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
->osdmap
, CEPH_OSDMAP_PAUSERD
);
1280 bool pausewr
= ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSEWR
) ||
1281 ceph_osdmap_flag(osdc
->osdmap
, 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
->osdmap
,
1307 CEPH_OSDMAP_SORTBITWISE
);
1308 enum calc_target_result ct_res
;
1311 pi
= ceph_pg_pool_by_id(osdc
->osdmap
, t
->base_oloc
.pool
);
1313 t
->osd
= CEPH_HOMELESS_OSD
;
1314 ct_res
= CALC_TARGET_POOL_DNE
;
1318 if (osdc
->osdmap
->epoch
== pi
->last_force_request_resend
) {
1319 if (last_force_resend
&&
1320 *last_force_resend
< pi
->last_force_request_resend
) {
1321 *last_force_resend
= pi
->last_force_request_resend
;
1322 force_resend
= true;
1323 } else if (!last_force_resend
) {
1324 force_resend
= true;
1327 if (ceph_oid_empty(&t
->target_oid
) || force_resend
) {
1328 ceph_oid_copy(&t
->target_oid
, &t
->base_oid
);
1329 need_check_tiering
= true;
1331 if (ceph_oloc_empty(&t
->target_oloc
) || force_resend
) {
1332 ceph_oloc_copy(&t
->target_oloc
, &t
->base_oloc
);
1333 need_check_tiering
= true;
1336 if (need_check_tiering
&&
1337 (t
->flags
& CEPH_OSD_FLAG_IGNORE_OVERLAY
) == 0) {
1338 if (t
->flags
& CEPH_OSD_FLAG_READ
&& pi
->read_tier
>= 0)
1339 t
->target_oloc
.pool
= pi
->read_tier
;
1340 if (t
->flags
& CEPH_OSD_FLAG_WRITE
&& pi
->write_tier
>= 0)
1341 t
->target_oloc
.pool
= pi
->write_tier
;
1344 ret
= ceph_object_locator_to_pg(osdc
->osdmap
, &t
->target_oid
,
1345 &t
->target_oloc
, &pgid
);
1347 WARN_ON(ret
!= -ENOENT
);
1348 t
->osd
= CEPH_HOMELESS_OSD
;
1349 ct_res
= CALC_TARGET_POOL_DNE
;
1352 last_pgid
.pool
= pgid
.pool
;
1353 last_pgid
.seed
= ceph_stable_mod(pgid
.seed
, t
->pg_num
, t
->pg_num_mask
);
1355 ceph_pg_to_up_acting_osds(osdc
->osdmap
, &pgid
, &up
, &acting
);
1357 ceph_is_new_interval(&t
->acting
,
1370 force_resend
= true;
1372 if (t
->paused
&& !target_should_be_paused(osdc
, t
, pi
)) {
1377 if (ceph_pg_compare(&t
->pgid
, &pgid
) ||
1378 ceph_osds_changed(&t
->acting
, &acting
, any_change
) ||
1380 t
->pgid
= pgid
; /* struct */
1381 ceph_osds_copy(&t
->acting
, &acting
);
1382 ceph_osds_copy(&t
->up
, &up
);
1384 t
->min_size
= pi
->min_size
;
1385 t
->pg_num
= pi
->pg_num
;
1386 t
->pg_num_mask
= pi
->pg_num_mask
;
1387 t
->sort_bitwise
= sort_bitwise
;
1389 t
->osd
= acting
.primary
;
1393 ct_res
= need_resend
? CALC_TARGET_NEED_RESEND
: CALC_TARGET_NO_ACTION
;
1395 dout("%s t %p -> ct_res %d osd %d\n", __func__
, t
, ct_res
, t
->osd
);
1399 static void setup_request_data(struct ceph_osd_request
*req
,
1400 struct ceph_msg
*msg
)
1405 if (!list_empty(&msg
->data
))
1408 WARN_ON(msg
->data_length
);
1409 for (i
= 0; i
< req
->r_num_ops
; i
++) {
1410 struct ceph_osd_req_op
*op
= &req
->r_ops
[i
];
1414 case CEPH_OSD_OP_WRITE
:
1415 case CEPH_OSD_OP_WRITEFULL
:
1416 WARN_ON(op
->indata_len
!= op
->extent
.length
);
1417 ceph_osdc_msg_data_add(msg
, &op
->extent
.osd_data
);
1419 case CEPH_OSD_OP_SETXATTR
:
1420 case CEPH_OSD_OP_CMPXATTR
:
1421 WARN_ON(op
->indata_len
!= op
->xattr
.name_len
+
1422 op
->xattr
.value_len
);
1423 ceph_osdc_msg_data_add(msg
, &op
->xattr
.osd_data
);
1425 case CEPH_OSD_OP_NOTIFY_ACK
:
1426 ceph_osdc_msg_data_add(msg
,
1427 &op
->notify_ack
.request_data
);
1431 case CEPH_OSD_OP_STAT
:
1432 ceph_osdc_msg_data_add(req
->r_reply
,
1435 case CEPH_OSD_OP_READ
:
1436 ceph_osdc_msg_data_add(req
->r_reply
,
1437 &op
->extent
.osd_data
);
1441 case CEPH_OSD_OP_CALL
:
1442 WARN_ON(op
->indata_len
!= op
->cls
.class_len
+
1443 op
->cls
.method_len
+
1444 op
->cls
.indata_len
);
1445 ceph_osdc_msg_data_add(msg
, &op
->cls
.request_info
);
1446 /* optional, can be NONE */
1447 ceph_osdc_msg_data_add(msg
, &op
->cls
.request_data
);
1448 /* optional, can be NONE */
1449 ceph_osdc_msg_data_add(req
->r_reply
,
1450 &op
->cls
.response_data
);
1452 case CEPH_OSD_OP_NOTIFY
:
1453 ceph_osdc_msg_data_add(msg
,
1454 &op
->notify
.request_data
);
1455 ceph_osdc_msg_data_add(req
->r_reply
,
1456 &op
->notify
.response_data
);
1460 data_len
+= op
->indata_len
;
1463 WARN_ON(data_len
!= msg
->data_length
);
1466 static void encode_request(struct ceph_osd_request
*req
, struct ceph_msg
*msg
)
1468 void *p
= msg
->front
.iov_base
;
1469 void *const end
= p
+ msg
->front_alloc_len
;
1473 if (req
->r_flags
& CEPH_OSD_FLAG_WRITE
) {
1474 /* snapshots aren't writeable */
1475 WARN_ON(req
->r_snapid
!= CEPH_NOSNAP
);
1477 WARN_ON(req
->r_mtime
.tv_sec
|| req
->r_mtime
.tv_nsec
||
1478 req
->r_data_offset
|| req
->r_snapc
);
1481 setup_request_data(req
, msg
);
1483 ceph_encode_32(&p
, 1); /* client_inc, always 1 */
1484 ceph_encode_32(&p
, req
->r_osdc
->osdmap
->epoch
);
1485 ceph_encode_32(&p
, req
->r_flags
);
1486 ceph_encode_timespec(p
, &req
->r_mtime
);
1487 p
+= sizeof(struct ceph_timespec
);
1488 /* aka reassert_version */
1489 memcpy(p
, &req
->r_replay_version
, sizeof(req
->r_replay_version
));
1490 p
+= sizeof(req
->r_replay_version
);
1493 ceph_encode_8(&p
, 4);
1494 ceph_encode_8(&p
, 4);
1495 ceph_encode_32(&p
, 8 + 4 + 4);
1496 ceph_encode_64(&p
, req
->r_t
.target_oloc
.pool
);
1497 ceph_encode_32(&p
, -1); /* preferred */
1498 ceph_encode_32(&p
, 0); /* key len */
1501 ceph_encode_8(&p
, 1);
1502 ceph_encode_64(&p
, req
->r_t
.pgid
.pool
);
1503 ceph_encode_32(&p
, req
->r_t
.pgid
.seed
);
1504 ceph_encode_32(&p
, -1); /* preferred */
1507 ceph_encode_32(&p
, req
->r_t
.target_oid
.name_len
);
1508 memcpy(p
, req
->r_t
.target_oid
.name
, req
->r_t
.target_oid
.name_len
);
1509 p
+= req
->r_t
.target_oid
.name_len
;
1511 /* ops, can imply data */
1512 ceph_encode_16(&p
, req
->r_num_ops
);
1513 for (i
= 0; i
< req
->r_num_ops
; i
++) {
1514 data_len
+= osd_req_encode_op(p
, &req
->r_ops
[i
]);
1515 p
+= sizeof(struct ceph_osd_op
);
1518 ceph_encode_64(&p
, req
->r_snapid
); /* snapid */
1520 ceph_encode_64(&p
, req
->r_snapc
->seq
);
1521 ceph_encode_32(&p
, req
->r_snapc
->num_snaps
);
1522 for (i
= 0; i
< req
->r_snapc
->num_snaps
; i
++)
1523 ceph_encode_64(&p
, req
->r_snapc
->snaps
[i
]);
1525 ceph_encode_64(&p
, 0); /* snap_seq */
1526 ceph_encode_32(&p
, 0); /* snaps len */
1529 ceph_encode_32(&p
, req
->r_attempts
); /* retry_attempt */
1532 msg
->front
.iov_len
= p
- msg
->front
.iov_base
;
1533 msg
->hdr
.version
= cpu_to_le16(4); /* MOSDOp v4 */
1534 msg
->hdr
.front_len
= cpu_to_le32(msg
->front
.iov_len
);
1535 msg
->hdr
.data_len
= cpu_to_le32(data_len
);
1537 * The header "data_off" is a hint to the receiver allowing it
1538 * to align received data into its buffers such that there's no
1539 * need to re-copy it before writing it to disk (direct I/O).
1541 msg
->hdr
.data_off
= cpu_to_le16(req
->r_data_offset
);
1543 dout("%s req %p oid %*pE oid_len %d front %zu data %u\n", __func__
,
1544 req
, req
->r_t
.target_oid
.name_len
, req
->r_t
.target_oid
.name
,
1545 req
->r_t
.target_oid
.name_len
, msg
->front
.iov_len
, data_len
);
1549 * @req has to be assigned a tid and registered.
1551 static void send_request(struct ceph_osd_request
*req
)
1553 struct ceph_osd
*osd
= req
->r_osd
;
1555 verify_osd_locked(osd
);
1556 WARN_ON(osd
->o_osd
!= req
->r_t
.osd
);
1559 * We may have a previously queued request message hanging
1560 * around. Cancel it to avoid corrupting the msgr.
1563 ceph_msg_revoke(req
->r_request
);
1565 req
->r_flags
|= CEPH_OSD_FLAG_KNOWN_REDIR
;
1566 if (req
->r_attempts
)
1567 req
->r_flags
|= CEPH_OSD_FLAG_RETRY
;
1569 WARN_ON(req
->r_flags
& CEPH_OSD_FLAG_RETRY
);
1571 encode_request(req
, req
->r_request
);
1573 dout("%s req %p tid %llu to pg %llu.%x osd%d flags 0x%x attempt %d\n",
1574 __func__
, req
, req
->r_tid
, req
->r_t
.pgid
.pool
, req
->r_t
.pgid
.seed
,
1575 req
->r_t
.osd
, req
->r_flags
, req
->r_attempts
);
1577 req
->r_t
.paused
= false;
1578 req
->r_stamp
= jiffies
;
1581 req
->r_sent
= osd
->o_incarnation
;
1582 req
->r_request
->hdr
.tid
= cpu_to_le64(req
->r_tid
);
1583 ceph_con_send(&osd
->o_con
, ceph_msg_get(req
->r_request
));
1586 static void maybe_request_map(struct ceph_osd_client
*osdc
)
1588 bool continuous
= false;
1590 verify_osdc_locked(osdc
);
1591 WARN_ON(!osdc
->osdmap
->epoch
);
1593 if (ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_FULL
) ||
1594 ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSERD
) ||
1595 ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSEWR
)) {
1596 dout("%s osdc %p continuous\n", __func__
, osdc
);
1599 dout("%s osdc %p onetime\n", __func__
, osdc
);
1602 if (ceph_monc_want_map(&osdc
->client
->monc
, CEPH_SUB_OSDMAP
,
1603 osdc
->osdmap
->epoch
+ 1, continuous
))
1604 ceph_monc_renew_subs(&osdc
->client
->monc
);
1607 static void send_map_check(struct ceph_osd_request
*req
);
1609 static void __submit_request(struct ceph_osd_request
*req
, bool wrlocked
)
1611 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1612 struct ceph_osd
*osd
;
1613 enum calc_target_result ct_res
;
1614 bool need_send
= false;
1615 bool promoted
= false;
1617 WARN_ON(req
->r_tid
|| req
->r_got_reply
);
1618 dout("%s req %p wrlocked %d\n", __func__
, req
, wrlocked
);
1621 ct_res
= calc_target(osdc
, &req
->r_t
, &req
->r_last_force_resend
, false);
1622 if (ct_res
== CALC_TARGET_POOL_DNE
&& !wrlocked
)
1625 osd
= lookup_create_osd(osdc
, req
->r_t
.osd
, wrlocked
);
1627 WARN_ON(PTR_ERR(osd
) != -EAGAIN
|| wrlocked
);
1631 if ((req
->r_flags
& CEPH_OSD_FLAG_WRITE
) &&
1632 ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSEWR
)) {
1633 dout("req %p pausewr\n", req
);
1634 req
->r_t
.paused
= true;
1635 maybe_request_map(osdc
);
1636 } else if ((req
->r_flags
& CEPH_OSD_FLAG_READ
) &&
1637 ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSERD
)) {
1638 dout("req %p pauserd\n", req
);
1639 req
->r_t
.paused
= true;
1640 maybe_request_map(osdc
);
1641 } else if ((req
->r_flags
& CEPH_OSD_FLAG_WRITE
) &&
1642 !(req
->r_flags
& (CEPH_OSD_FLAG_FULL_TRY
|
1643 CEPH_OSD_FLAG_FULL_FORCE
)) &&
1644 (ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_FULL
) ||
1645 pool_full(osdc
, req
->r_t
.base_oloc
.pool
))) {
1646 dout("req %p full/pool_full\n", req
);
1647 pr_warn_ratelimited("FULL or reached pool quota\n");
1648 req
->r_t
.paused
= true;
1649 maybe_request_map(osdc
);
1650 } else if (!osd_homeless(osd
)) {
1653 maybe_request_map(osdc
);
1656 mutex_lock(&osd
->lock
);
1658 * Assign the tid atomically with send_request() to protect
1659 * multiple writes to the same object from racing with each
1660 * other, resulting in out of order ops on the OSDs.
1662 req
->r_tid
= atomic64_inc_return(&osdc
->last_tid
);
1663 link_request(osd
, req
);
1666 mutex_unlock(&osd
->lock
);
1668 if (ct_res
== CALC_TARGET_POOL_DNE
)
1669 send_map_check(req
);
1672 downgrade_write(&osdc
->lock
);
1676 up_read(&osdc
->lock
);
1677 down_write(&osdc
->lock
);
1683 static void account_request(struct ceph_osd_request
*req
)
1685 unsigned int mask
= CEPH_OSD_FLAG_ACK
| CEPH_OSD_FLAG_ONDISK
;
1687 if (req
->r_flags
& CEPH_OSD_FLAG_READ
) {
1688 WARN_ON(req
->r_flags
& mask
);
1689 req
->r_flags
|= CEPH_OSD_FLAG_ACK
;
1690 } else if (req
->r_flags
& CEPH_OSD_FLAG_WRITE
)
1691 WARN_ON(!(req
->r_flags
& mask
));
1695 WARN_ON(req
->r_unsafe_callback
&& (req
->r_flags
& mask
) != mask
);
1696 atomic_inc(&req
->r_osdc
->num_requests
);
1699 static void submit_request(struct ceph_osd_request
*req
, bool wrlocked
)
1701 ceph_osdc_get_request(req
);
1702 account_request(req
);
1703 __submit_request(req
, wrlocked
);
1706 static void __finish_request(struct ceph_osd_request
*req
)
1708 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1709 struct ceph_osd
*osd
= req
->r_osd
;
1711 verify_osd_locked(osd
);
1712 dout("%s req %p tid %llu\n", __func__
, req
, req
->r_tid
);
1714 WARN_ON(lookup_request_mc(&osdc
->map_checks
, req
->r_tid
));
1715 unlink_request(osd
, req
);
1716 atomic_dec(&osdc
->num_requests
);
1719 * If an OSD has failed or returned and a request has been sent
1720 * twice, it's possible to get a reply and end up here while the
1721 * request message is queued for delivery. We will ignore the
1722 * reply, so not a big deal, but better to try and catch it.
1724 ceph_msg_revoke(req
->r_request
);
1725 ceph_msg_revoke_incoming(req
->r_reply
);
1728 static void finish_request(struct ceph_osd_request
*req
)
1730 __finish_request(req
);
1731 ceph_osdc_put_request(req
);
1734 static void __complete_request(struct ceph_osd_request
*req
)
1736 if (req
->r_callback
)
1737 req
->r_callback(req
);
1739 complete_all(&req
->r_completion
);
1743 * Note that this is open-coded in handle_reply(), which has to deal
1744 * with ack vs commit, dup acks, etc.
1746 static void complete_request(struct ceph_osd_request
*req
, int err
)
1748 dout("%s req %p tid %llu err %d\n", __func__
, req
, req
->r_tid
, err
);
1750 req
->r_result
= err
;
1751 __finish_request(req
);
1752 __complete_request(req
);
1753 complete_all(&req
->r_safe_completion
);
1754 ceph_osdc_put_request(req
);
1757 static void cancel_map_check(struct ceph_osd_request
*req
)
1759 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1760 struct ceph_osd_request
*lookup_req
;
1762 verify_osdc_wrlocked(osdc
);
1764 lookup_req
= lookup_request_mc(&osdc
->map_checks
, req
->r_tid
);
1768 WARN_ON(lookup_req
!= req
);
1769 erase_request_mc(&osdc
->map_checks
, req
);
1770 ceph_osdc_put_request(req
);
1773 static void cancel_request(struct ceph_osd_request
*req
)
1775 dout("%s req %p tid %llu\n", __func__
, req
, req
->r_tid
);
1777 cancel_map_check(req
);
1778 finish_request(req
);
1781 static void check_pool_dne(struct ceph_osd_request
*req
)
1783 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1784 struct ceph_osdmap
*map
= osdc
->osdmap
;
1786 verify_osdc_wrlocked(osdc
);
1787 WARN_ON(!map
->epoch
);
1789 if (req
->r_attempts
) {
1791 * We sent a request earlier, which means that
1792 * previously the pool existed, and now it does not
1793 * (i.e., it was deleted).
1795 req
->r_map_dne_bound
= map
->epoch
;
1796 dout("%s req %p tid %llu pool disappeared\n", __func__
, req
,
1799 dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__
,
1800 req
, req
->r_tid
, req
->r_map_dne_bound
, map
->epoch
);
1803 if (req
->r_map_dne_bound
) {
1804 if (map
->epoch
>= req
->r_map_dne_bound
) {
1805 /* we had a new enough map */
1806 pr_info_ratelimited("tid %llu pool does not exist\n",
1808 complete_request(req
, -ENOENT
);
1811 send_map_check(req
);
1815 static void map_check_cb(struct ceph_mon_generic_request
*greq
)
1817 struct ceph_osd_client
*osdc
= &greq
->monc
->client
->osdc
;
1818 struct ceph_osd_request
*req
;
1819 u64 tid
= greq
->private_data
;
1821 WARN_ON(greq
->result
|| !greq
->u
.newest
);
1823 down_write(&osdc
->lock
);
1824 req
= lookup_request_mc(&osdc
->map_checks
, tid
);
1826 dout("%s tid %llu dne\n", __func__
, tid
);
1830 dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__
,
1831 req
, req
->r_tid
, req
->r_map_dne_bound
, greq
->u
.newest
);
1832 if (!req
->r_map_dne_bound
)
1833 req
->r_map_dne_bound
= greq
->u
.newest
;
1834 erase_request_mc(&osdc
->map_checks
, req
);
1835 check_pool_dne(req
);
1837 ceph_osdc_put_request(req
);
1839 up_write(&osdc
->lock
);
1842 static void send_map_check(struct ceph_osd_request
*req
)
1844 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1845 struct ceph_osd_request
*lookup_req
;
1848 verify_osdc_wrlocked(osdc
);
1850 lookup_req
= lookup_request_mc(&osdc
->map_checks
, req
->r_tid
);
1852 WARN_ON(lookup_req
!= req
);
1856 ceph_osdc_get_request(req
);
1857 insert_request_mc(&osdc
->map_checks
, req
);
1858 ret
= ceph_monc_get_version_async(&osdc
->client
->monc
, "osdmap",
1859 map_check_cb
, req
->r_tid
);
1864 * lingering requests, watch/notify v2 infrastructure
1866 static void linger_release(struct kref
*kref
)
1868 struct ceph_osd_linger_request
*lreq
=
1869 container_of(kref
, struct ceph_osd_linger_request
, kref
);
1871 dout("%s lreq %p reg_req %p ping_req %p\n", __func__
, lreq
,
1872 lreq
->reg_req
, lreq
->ping_req
);
1873 WARN_ON(!RB_EMPTY_NODE(&lreq
->node
));
1874 WARN_ON(!RB_EMPTY_NODE(&lreq
->osdc_node
));
1875 WARN_ON(!RB_EMPTY_NODE(&lreq
->mc_node
));
1876 WARN_ON(!list_empty(&lreq
->scan_item
));
1877 WARN_ON(!list_empty(&lreq
->pending_lworks
));
1881 ceph_osdc_put_request(lreq
->reg_req
);
1883 ceph_osdc_put_request(lreq
->ping_req
);
1884 target_destroy(&lreq
->t
);
1888 static void linger_put(struct ceph_osd_linger_request
*lreq
)
1891 kref_put(&lreq
->kref
, linger_release
);
1894 static struct ceph_osd_linger_request
*
1895 linger_get(struct ceph_osd_linger_request
*lreq
)
1897 kref_get(&lreq
->kref
);
1901 static struct ceph_osd_linger_request
*
1902 linger_alloc(struct ceph_osd_client
*osdc
)
1904 struct ceph_osd_linger_request
*lreq
;
1906 lreq
= kzalloc(sizeof(*lreq
), GFP_NOIO
);
1910 kref_init(&lreq
->kref
);
1911 mutex_init(&lreq
->lock
);
1912 RB_CLEAR_NODE(&lreq
->node
);
1913 RB_CLEAR_NODE(&lreq
->osdc_node
);
1914 RB_CLEAR_NODE(&lreq
->mc_node
);
1915 INIT_LIST_HEAD(&lreq
->scan_item
);
1916 INIT_LIST_HEAD(&lreq
->pending_lworks
);
1917 init_completion(&lreq
->reg_commit_wait
);
1918 init_completion(&lreq
->notify_finish_wait
);
1921 target_init(&lreq
->t
);
1923 dout("%s lreq %p\n", __func__
, lreq
);
1927 DEFINE_RB_INSDEL_FUNCS(linger
, struct ceph_osd_linger_request
, linger_id
, node
)
1928 DEFINE_RB_FUNCS(linger_osdc
, struct ceph_osd_linger_request
, linger_id
, osdc_node
)
1929 DEFINE_RB_FUNCS(linger_mc
, struct ceph_osd_linger_request
, linger_id
, mc_node
)
1932 * Create linger request <-> OSD session relation.
1934 * @lreq has to be registered, @osd may be homeless.
1936 static void link_linger(struct ceph_osd
*osd
,
1937 struct ceph_osd_linger_request
*lreq
)
1939 verify_osd_locked(osd
);
1940 WARN_ON(!lreq
->linger_id
|| lreq
->osd
);
1941 dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__
, osd
,
1942 osd
->o_osd
, lreq
, lreq
->linger_id
);
1944 if (!osd_homeless(osd
))
1945 __remove_osd_from_lru(osd
);
1947 atomic_inc(&osd
->o_osdc
->num_homeless
);
1950 insert_linger(&osd
->o_linger_requests
, lreq
);
1954 static void unlink_linger(struct ceph_osd
*osd
,
1955 struct ceph_osd_linger_request
*lreq
)
1957 verify_osd_locked(osd
);
1958 WARN_ON(lreq
->osd
!= osd
);
1959 dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__
, osd
,
1960 osd
->o_osd
, lreq
, lreq
->linger_id
);
1963 erase_linger(&osd
->o_linger_requests
, lreq
);
1966 if (!osd_homeless(osd
))
1967 maybe_move_osd_to_lru(osd
);
1969 atomic_dec(&osd
->o_osdc
->num_homeless
);
1972 static bool __linger_registered(struct ceph_osd_linger_request
*lreq
)
1974 verify_osdc_locked(lreq
->osdc
);
1976 return !RB_EMPTY_NODE(&lreq
->osdc_node
);
1979 static bool linger_registered(struct ceph_osd_linger_request
*lreq
)
1981 struct ceph_osd_client
*osdc
= lreq
->osdc
;
1984 down_read(&osdc
->lock
);
1985 registered
= __linger_registered(lreq
);
1986 up_read(&osdc
->lock
);
1991 static void linger_register(struct ceph_osd_linger_request
*lreq
)
1993 struct ceph_osd_client
*osdc
= lreq
->osdc
;
1995 verify_osdc_wrlocked(osdc
);
1996 WARN_ON(lreq
->linger_id
);
1999 lreq
->linger_id
= ++osdc
->last_linger_id
;
2000 insert_linger_osdc(&osdc
->linger_requests
, lreq
);
2003 static void linger_unregister(struct ceph_osd_linger_request
*lreq
)
2005 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2007 verify_osdc_wrlocked(osdc
);
2009 erase_linger_osdc(&osdc
->linger_requests
, lreq
);
2013 static void cancel_linger_request(struct ceph_osd_request
*req
)
2015 struct ceph_osd_linger_request
*lreq
= req
->r_priv
;
2017 WARN_ON(!req
->r_linger
);
2018 cancel_request(req
);
2022 struct linger_work
{
2023 struct work_struct work
;
2024 struct ceph_osd_linger_request
*lreq
;
2025 struct list_head pending_item
;
2026 unsigned long queued_stamp
;
2032 void *payload
; /* points into @msg front */
2035 struct ceph_msg
*msg
; /* for ceph_msg_put() */
2043 static struct linger_work
*lwork_alloc(struct ceph_osd_linger_request
*lreq
,
2046 struct linger_work
*lwork
;
2048 lwork
= kzalloc(sizeof(*lwork
), GFP_NOIO
);
2052 INIT_WORK(&lwork
->work
, workfn
);
2053 INIT_LIST_HEAD(&lwork
->pending_item
);
2054 lwork
->lreq
= linger_get(lreq
);
2059 static void lwork_free(struct linger_work
*lwork
)
2061 struct ceph_osd_linger_request
*lreq
= lwork
->lreq
;
2063 mutex_lock(&lreq
->lock
);
2064 list_del(&lwork
->pending_item
);
2065 mutex_unlock(&lreq
->lock
);
2071 static void lwork_queue(struct linger_work
*lwork
)
2073 struct ceph_osd_linger_request
*lreq
= lwork
->lreq
;
2074 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2076 verify_lreq_locked(lreq
);
2077 WARN_ON(!list_empty(&lwork
->pending_item
));
2079 lwork
->queued_stamp
= jiffies
;
2080 list_add_tail(&lwork
->pending_item
, &lreq
->pending_lworks
);
2081 queue_work(osdc
->notify_wq
, &lwork
->work
);
2084 static void do_watch_notify(struct work_struct
*w
)
2086 struct linger_work
*lwork
= container_of(w
, struct linger_work
, work
);
2087 struct ceph_osd_linger_request
*lreq
= lwork
->lreq
;
2089 if (!linger_registered(lreq
)) {
2090 dout("%s lreq %p not registered\n", __func__
, lreq
);
2094 WARN_ON(!lreq
->is_watch
);
2095 dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n",
2096 __func__
, lreq
, lwork
->notify
.notify_id
, lwork
->notify
.notifier_id
,
2097 lwork
->notify
.payload_len
);
2098 lreq
->wcb(lreq
->data
, lwork
->notify
.notify_id
, lreq
->linger_id
,
2099 lwork
->notify
.notifier_id
, lwork
->notify
.payload
,
2100 lwork
->notify
.payload_len
);
2103 ceph_msg_put(lwork
->notify
.msg
);
2107 static void do_watch_error(struct work_struct
*w
)
2109 struct linger_work
*lwork
= container_of(w
, struct linger_work
, work
);
2110 struct ceph_osd_linger_request
*lreq
= lwork
->lreq
;
2112 if (!linger_registered(lreq
)) {
2113 dout("%s lreq %p not registered\n", __func__
, lreq
);
2117 dout("%s lreq %p err %d\n", __func__
, lreq
, lwork
->error
.err
);
2118 lreq
->errcb(lreq
->data
, lreq
->linger_id
, lwork
->error
.err
);
2124 static void queue_watch_error(struct ceph_osd_linger_request
*lreq
)
2126 struct linger_work
*lwork
;
2128 lwork
= lwork_alloc(lreq
, do_watch_error
);
2130 pr_err("failed to allocate error-lwork\n");
2134 lwork
->error
.err
= lreq
->last_error
;
2138 static void linger_reg_commit_complete(struct ceph_osd_linger_request
*lreq
,
2141 if (!completion_done(&lreq
->reg_commit_wait
)) {
2142 lreq
->reg_commit_error
= (result
<= 0 ? result
: 0);
2143 complete_all(&lreq
->reg_commit_wait
);
2147 static void linger_commit_cb(struct ceph_osd_request
*req
)
2149 struct ceph_osd_linger_request
*lreq
= req
->r_priv
;
2151 mutex_lock(&lreq
->lock
);
2152 dout("%s lreq %p linger_id %llu result %d\n", __func__
, lreq
,
2153 lreq
->linger_id
, req
->r_result
);
2154 WARN_ON(!__linger_registered(lreq
));
2155 linger_reg_commit_complete(lreq
, req
->r_result
);
2156 lreq
->committed
= true;
2158 if (!lreq
->is_watch
) {
2159 struct ceph_osd_data
*osd_data
=
2160 osd_req_op_data(req
, 0, notify
, response_data
);
2161 void *p
= page_address(osd_data
->pages
[0]);
2163 WARN_ON(req
->r_ops
[0].op
!= CEPH_OSD_OP_NOTIFY
||
2164 osd_data
->type
!= CEPH_OSD_DATA_TYPE_PAGES
);
2166 /* make note of the notify_id */
2167 if (req
->r_ops
[0].outdata_len
>= sizeof(u64
)) {
2168 lreq
->notify_id
= ceph_decode_64(&p
);
2169 dout("lreq %p notify_id %llu\n", lreq
,
2172 dout("lreq %p no notify_id\n", lreq
);
2176 mutex_unlock(&lreq
->lock
);
2180 static int normalize_watch_error(int err
)
2183 * Translate ENOENT -> ENOTCONN so that a delete->disconnection
2184 * notification and a failure to reconnect because we raced with
2185 * the delete appear the same to the user.
2193 static void linger_reconnect_cb(struct ceph_osd_request
*req
)
2195 struct ceph_osd_linger_request
*lreq
= req
->r_priv
;
2197 mutex_lock(&lreq
->lock
);
2198 dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__
,
2199 lreq
, lreq
->linger_id
, req
->r_result
, lreq
->last_error
);
2200 if (req
->r_result
< 0) {
2201 if (!lreq
->last_error
) {
2202 lreq
->last_error
= normalize_watch_error(req
->r_result
);
2203 queue_watch_error(lreq
);
2207 mutex_unlock(&lreq
->lock
);
2211 static void send_linger(struct ceph_osd_linger_request
*lreq
)
2213 struct ceph_osd_request
*req
= lreq
->reg_req
;
2214 struct ceph_osd_req_op
*op
= &req
->r_ops
[0];
2216 verify_osdc_wrlocked(req
->r_osdc
);
2217 dout("%s lreq %p linger_id %llu\n", __func__
, lreq
, lreq
->linger_id
);
2220 cancel_linger_request(req
);
2222 request_reinit(req
);
2223 ceph_oid_copy(&req
->r_base_oid
, &lreq
->t
.base_oid
);
2224 ceph_oloc_copy(&req
->r_base_oloc
, &lreq
->t
.base_oloc
);
2225 req
->r_flags
= lreq
->t
.flags
;
2226 req
->r_mtime
= lreq
->mtime
;
2228 mutex_lock(&lreq
->lock
);
2229 if (lreq
->is_watch
&& lreq
->committed
) {
2230 WARN_ON(op
->op
!= CEPH_OSD_OP_WATCH
||
2231 op
->watch
.cookie
!= lreq
->linger_id
);
2232 op
->watch
.op
= CEPH_OSD_WATCH_OP_RECONNECT
;
2233 op
->watch
.gen
= ++lreq
->register_gen
;
2234 dout("lreq %p reconnect register_gen %u\n", lreq
,
2236 req
->r_callback
= linger_reconnect_cb
;
2238 if (!lreq
->is_watch
)
2239 lreq
->notify_id
= 0;
2241 WARN_ON(op
->watch
.op
!= CEPH_OSD_WATCH_OP_WATCH
);
2242 dout("lreq %p register\n", lreq
);
2243 req
->r_callback
= linger_commit_cb
;
2245 mutex_unlock(&lreq
->lock
);
2247 req
->r_priv
= linger_get(lreq
);
2248 req
->r_linger
= true;
2250 submit_request(req
, true);
2253 static void linger_ping_cb(struct ceph_osd_request
*req
)
2255 struct ceph_osd_linger_request
*lreq
= req
->r_priv
;
2257 mutex_lock(&lreq
->lock
);
2258 dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n",
2259 __func__
, lreq
, lreq
->linger_id
, req
->r_result
, lreq
->ping_sent
,
2261 if (lreq
->register_gen
== req
->r_ops
[0].watch
.gen
) {
2262 if (!req
->r_result
) {
2263 lreq
->watch_valid_thru
= lreq
->ping_sent
;
2264 } else if (!lreq
->last_error
) {
2265 lreq
->last_error
= normalize_watch_error(req
->r_result
);
2266 queue_watch_error(lreq
);
2269 dout("lreq %p register_gen %u ignoring old pong %u\n", lreq
,
2270 lreq
->register_gen
, req
->r_ops
[0].watch
.gen
);
2273 mutex_unlock(&lreq
->lock
);
2277 static void send_linger_ping(struct ceph_osd_linger_request
*lreq
)
2279 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2280 struct ceph_osd_request
*req
= lreq
->ping_req
;
2281 struct ceph_osd_req_op
*op
= &req
->r_ops
[0];
2283 if (ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSERD
)) {
2284 dout("%s PAUSERD\n", __func__
);
2288 lreq
->ping_sent
= jiffies
;
2289 dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n",
2290 __func__
, lreq
, lreq
->linger_id
, lreq
->ping_sent
,
2291 lreq
->register_gen
);
2294 cancel_linger_request(req
);
2296 request_reinit(req
);
2297 target_copy(&req
->r_t
, &lreq
->t
);
2299 WARN_ON(op
->op
!= CEPH_OSD_OP_WATCH
||
2300 op
->watch
.cookie
!= lreq
->linger_id
||
2301 op
->watch
.op
!= CEPH_OSD_WATCH_OP_PING
);
2302 op
->watch
.gen
= lreq
->register_gen
;
2303 req
->r_callback
= linger_ping_cb
;
2304 req
->r_priv
= linger_get(lreq
);
2305 req
->r_linger
= true;
2307 ceph_osdc_get_request(req
);
2308 account_request(req
);
2309 req
->r_tid
= atomic64_inc_return(&osdc
->last_tid
);
2310 link_request(lreq
->osd
, req
);
2314 static void linger_submit(struct ceph_osd_linger_request
*lreq
)
2316 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2317 struct ceph_osd
*osd
;
2319 calc_target(osdc
, &lreq
->t
, &lreq
->last_force_resend
, false);
2320 osd
= lookup_create_osd(osdc
, lreq
->t
.osd
, true);
2321 link_linger(osd
, lreq
);
2326 static void cancel_linger_map_check(struct ceph_osd_linger_request
*lreq
)
2328 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2329 struct ceph_osd_linger_request
*lookup_lreq
;
2331 verify_osdc_wrlocked(osdc
);
2333 lookup_lreq
= lookup_linger_mc(&osdc
->linger_map_checks
,
2338 WARN_ON(lookup_lreq
!= lreq
);
2339 erase_linger_mc(&osdc
->linger_map_checks
, lreq
);
2344 * @lreq has to be both registered and linked.
2346 static void __linger_cancel(struct ceph_osd_linger_request
*lreq
)
2348 if (lreq
->is_watch
&& lreq
->ping_req
->r_osd
)
2349 cancel_linger_request(lreq
->ping_req
);
2350 if (lreq
->reg_req
->r_osd
)
2351 cancel_linger_request(lreq
->reg_req
);
2352 cancel_linger_map_check(lreq
);
2353 unlink_linger(lreq
->osd
, lreq
);
2354 linger_unregister(lreq
);
2357 static void linger_cancel(struct ceph_osd_linger_request
*lreq
)
2359 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2361 down_write(&osdc
->lock
);
2362 if (__linger_registered(lreq
))
2363 __linger_cancel(lreq
);
2364 up_write(&osdc
->lock
);
2367 static void send_linger_map_check(struct ceph_osd_linger_request
*lreq
);
2369 static void check_linger_pool_dne(struct ceph_osd_linger_request
*lreq
)
2371 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2372 struct ceph_osdmap
*map
= osdc
->osdmap
;
2374 verify_osdc_wrlocked(osdc
);
2375 WARN_ON(!map
->epoch
);
2377 if (lreq
->register_gen
) {
2378 lreq
->map_dne_bound
= map
->epoch
;
2379 dout("%s lreq %p linger_id %llu pool disappeared\n", __func__
,
2380 lreq
, lreq
->linger_id
);
2382 dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n",
2383 __func__
, lreq
, lreq
->linger_id
, lreq
->map_dne_bound
,
2387 if (lreq
->map_dne_bound
) {
2388 if (map
->epoch
>= lreq
->map_dne_bound
) {
2389 /* we had a new enough map */
2390 pr_info("linger_id %llu pool does not exist\n",
2392 linger_reg_commit_complete(lreq
, -ENOENT
);
2393 __linger_cancel(lreq
);
2396 send_linger_map_check(lreq
);
2400 static void linger_map_check_cb(struct ceph_mon_generic_request
*greq
)
2402 struct ceph_osd_client
*osdc
= &greq
->monc
->client
->osdc
;
2403 struct ceph_osd_linger_request
*lreq
;
2404 u64 linger_id
= greq
->private_data
;
2406 WARN_ON(greq
->result
|| !greq
->u
.newest
);
2408 down_write(&osdc
->lock
);
2409 lreq
= lookup_linger_mc(&osdc
->linger_map_checks
, linger_id
);
2411 dout("%s linger_id %llu dne\n", __func__
, linger_id
);
2415 dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n",
2416 __func__
, lreq
, lreq
->linger_id
, lreq
->map_dne_bound
,
2418 if (!lreq
->map_dne_bound
)
2419 lreq
->map_dne_bound
= greq
->u
.newest
;
2420 erase_linger_mc(&osdc
->linger_map_checks
, lreq
);
2421 check_linger_pool_dne(lreq
);
2425 up_write(&osdc
->lock
);
2428 static void send_linger_map_check(struct ceph_osd_linger_request
*lreq
)
2430 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2431 struct ceph_osd_linger_request
*lookup_lreq
;
2434 verify_osdc_wrlocked(osdc
);
2436 lookup_lreq
= lookup_linger_mc(&osdc
->linger_map_checks
,
2439 WARN_ON(lookup_lreq
!= lreq
);
2444 insert_linger_mc(&osdc
->linger_map_checks
, lreq
);
2445 ret
= ceph_monc_get_version_async(&osdc
->client
->monc
, "osdmap",
2446 linger_map_check_cb
, lreq
->linger_id
);
2450 static int linger_reg_commit_wait(struct ceph_osd_linger_request
*lreq
)
2454 dout("%s lreq %p linger_id %llu\n", __func__
, lreq
, lreq
->linger_id
);
2455 ret
= wait_for_completion_interruptible(&lreq
->reg_commit_wait
);
2456 return ret
?: lreq
->reg_commit_error
;
2459 static int linger_notify_finish_wait(struct ceph_osd_linger_request
*lreq
)
2463 dout("%s lreq %p linger_id %llu\n", __func__
, lreq
, lreq
->linger_id
);
2464 ret
= wait_for_completion_interruptible(&lreq
->notify_finish_wait
);
2465 return ret
?: lreq
->notify_finish_error
;
2469 * Timeout callback, called every N seconds. When 1 or more OSD
2470 * requests has been active for more than N seconds, we send a keepalive
2471 * (tag + timestamp) to its OSD to ensure any communications channel
2472 * reset is detected.
2474 static void handle_timeout(struct work_struct
*work
)
2476 struct ceph_osd_client
*osdc
=
2477 container_of(work
, struct ceph_osd_client
, timeout_work
.work
);
2478 struct ceph_options
*opts
= osdc
->client
->options
;
2479 unsigned long cutoff
= jiffies
- opts
->osd_keepalive_timeout
;
2480 LIST_HEAD(slow_osds
);
2481 struct rb_node
*n
, *p
;
2483 dout("%s osdc %p\n", __func__
, osdc
);
2484 down_write(&osdc
->lock
);
2487 * ping osds that are a bit slow. this ensures that if there
2488 * is a break in the TCP connection we will notice, and reopen
2489 * a connection with that osd (from the fault callback).
2491 for (n
= rb_first(&osdc
->osds
); n
; n
= rb_next(n
)) {
2492 struct ceph_osd
*osd
= rb_entry(n
, struct ceph_osd
, o_node
);
2495 for (p
= rb_first(&osd
->o_requests
); p
; p
= rb_next(p
)) {
2496 struct ceph_osd_request
*req
=
2497 rb_entry(p
, struct ceph_osd_request
, r_node
);
2499 if (time_before(req
->r_stamp
, cutoff
)) {
2500 dout(" req %p tid %llu on osd%d is laggy\n",
2501 req
, req
->r_tid
, osd
->o_osd
);
2505 for (p
= rb_first(&osd
->o_linger_requests
); p
; p
= rb_next(p
)) {
2506 struct ceph_osd_linger_request
*lreq
=
2507 rb_entry(p
, struct ceph_osd_linger_request
, node
);
2509 dout(" lreq %p linger_id %llu is served by osd%d\n",
2510 lreq
, lreq
->linger_id
, osd
->o_osd
);
2513 mutex_lock(&lreq
->lock
);
2514 if (lreq
->is_watch
&& lreq
->committed
&& !lreq
->last_error
)
2515 send_linger_ping(lreq
);
2516 mutex_unlock(&lreq
->lock
);
2520 list_move_tail(&osd
->o_keepalive_item
, &slow_osds
);
2523 if (atomic_read(&osdc
->num_homeless
) || !list_empty(&slow_osds
))
2524 maybe_request_map(osdc
);
2526 while (!list_empty(&slow_osds
)) {
2527 struct ceph_osd
*osd
= list_first_entry(&slow_osds
,
2530 list_del_init(&osd
->o_keepalive_item
);
2531 ceph_con_keepalive(&osd
->o_con
);
2534 up_write(&osdc
->lock
);
2535 schedule_delayed_work(&osdc
->timeout_work
,
2536 osdc
->client
->options
->osd_keepalive_timeout
);
2539 static void handle_osds_timeout(struct work_struct
*work
)
2541 struct ceph_osd_client
*osdc
=
2542 container_of(work
, struct ceph_osd_client
,
2543 osds_timeout_work
.work
);
2544 unsigned long delay
= osdc
->client
->options
->osd_idle_ttl
/ 4;
2545 struct ceph_osd
*osd
, *nosd
;
2547 dout("%s osdc %p\n", __func__
, osdc
);
2548 down_write(&osdc
->lock
);
2549 list_for_each_entry_safe(osd
, nosd
, &osdc
->osd_lru
, o_osd_lru
) {
2550 if (time_before(jiffies
, osd
->lru_ttl
))
2553 WARN_ON(!RB_EMPTY_ROOT(&osd
->o_requests
));
2554 WARN_ON(!RB_EMPTY_ROOT(&osd
->o_linger_requests
));
2558 up_write(&osdc
->lock
);
2559 schedule_delayed_work(&osdc
->osds_timeout_work
,
2560 round_jiffies_relative(delay
));
2563 static int ceph_oloc_decode(void **p
, void *end
,
2564 struct ceph_object_locator
*oloc
)
2566 u8 struct_v
, struct_cv
;
2571 ceph_decode_need(p
, end
, 1 + 1 + 4, e_inval
);
2572 struct_v
= ceph_decode_8(p
);
2573 struct_cv
= ceph_decode_8(p
);
2575 pr_warn("got v %d < 3 cv %d of ceph_object_locator\n",
2576 struct_v
, struct_cv
);
2579 if (struct_cv
> 6) {
2580 pr_warn("got v %d cv %d > 6 of ceph_object_locator\n",
2581 struct_v
, struct_cv
);
2584 len
= ceph_decode_32(p
);
2585 ceph_decode_need(p
, end
, len
, e_inval
);
2586 struct_end
= *p
+ len
;
2588 oloc
->pool
= ceph_decode_64(p
);
2589 *p
+= 4; /* skip preferred */
2591 len
= ceph_decode_32(p
);
2593 pr_warn("ceph_object_locator::key is set\n");
2597 if (struct_v
>= 5) {
2598 len
= ceph_decode_32(p
);
2600 pr_warn("ceph_object_locator::nspace is set\n");
2605 if (struct_v
>= 6) {
2606 s64 hash
= ceph_decode_64(p
);
2608 pr_warn("ceph_object_locator::hash is set\n");
2623 static int ceph_redirect_decode(void **p
, void *end
,
2624 struct ceph_request_redirect
*redir
)
2626 u8 struct_v
, struct_cv
;
2631 ceph_decode_need(p
, end
, 1 + 1 + 4, e_inval
);
2632 struct_v
= ceph_decode_8(p
);
2633 struct_cv
= ceph_decode_8(p
);
2634 if (struct_cv
> 1) {
2635 pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n",
2636 struct_v
, struct_cv
);
2639 len
= ceph_decode_32(p
);
2640 ceph_decode_need(p
, end
, len
, e_inval
);
2641 struct_end
= *p
+ len
;
2643 ret
= ceph_oloc_decode(p
, end
, &redir
->oloc
);
2647 len
= ceph_decode_32(p
);
2649 pr_warn("ceph_request_redirect::object_name is set\n");
2653 len
= ceph_decode_32(p
);
2654 *p
+= len
; /* skip osd_instructions */
2666 struct MOSDOpReply
{
2667 struct ceph_pg pgid
;
2672 u32 outdata_len
[CEPH_OSD_MAX_OPS
];
2673 s32 rval
[CEPH_OSD_MAX_OPS
];
2675 struct ceph_eversion replay_version
;
2677 struct ceph_request_redirect redirect
;
2680 static int decode_MOSDOpReply(const struct ceph_msg
*msg
, struct MOSDOpReply
*m
)
2682 void *p
= msg
->front
.iov_base
;
2683 void *const end
= p
+ msg
->front
.iov_len
;
2684 u16 version
= le16_to_cpu(msg
->hdr
.version
);
2685 struct ceph_eversion bad_replay_version
;
2691 ceph_decode_32_safe(&p
, end
, len
, e_inval
);
2692 ceph_decode_need(&p
, end
, len
, e_inval
);
2693 p
+= len
; /* skip oid */
2695 ret
= ceph_decode_pgid(&p
, end
, &m
->pgid
);
2699 ceph_decode_64_safe(&p
, end
, m
->flags
, e_inval
);
2700 ceph_decode_32_safe(&p
, end
, m
->result
, e_inval
);
2701 ceph_decode_need(&p
, end
, sizeof(bad_replay_version
), e_inval
);
2702 memcpy(&bad_replay_version
, p
, sizeof(bad_replay_version
));
2703 p
+= sizeof(bad_replay_version
);
2704 ceph_decode_32_safe(&p
, end
, m
->epoch
, e_inval
);
2706 ceph_decode_32_safe(&p
, end
, m
->num_ops
, e_inval
);
2707 if (m
->num_ops
> ARRAY_SIZE(m
->outdata_len
))
2710 ceph_decode_need(&p
, end
, m
->num_ops
* sizeof(struct ceph_osd_op
),
2712 for (i
= 0; i
< m
->num_ops
; i
++) {
2713 struct ceph_osd_op
*op
= p
;
2715 m
->outdata_len
[i
] = le32_to_cpu(op
->payload_len
);
2719 ceph_decode_32_safe(&p
, end
, m
->retry_attempt
, e_inval
);
2720 for (i
= 0; i
< m
->num_ops
; i
++)
2721 ceph_decode_32_safe(&p
, end
, m
->rval
[i
], e_inval
);
2724 ceph_decode_need(&p
, end
, sizeof(m
->replay_version
), e_inval
);
2725 memcpy(&m
->replay_version
, p
, sizeof(m
->replay_version
));
2726 p
+= sizeof(m
->replay_version
);
2727 ceph_decode_64_safe(&p
, end
, m
->user_version
, e_inval
);
2729 m
->replay_version
= bad_replay_version
; /* struct */
2730 m
->user_version
= le64_to_cpu(m
->replay_version
.version
);
2735 ceph_decode_8_safe(&p
, end
, decode_redir
, e_inval
);
2743 ret
= ceph_redirect_decode(&p
, end
, &m
->redirect
);
2747 ceph_oloc_init(&m
->redirect
.oloc
);
2757 * We are done with @req if
2758 * - @m is a safe reply, or
2759 * - @m is an unsafe reply and we didn't want a safe one
2761 static bool done_request(const struct ceph_osd_request
*req
,
2762 const struct MOSDOpReply
*m
)
2764 return (m
->result
< 0 ||
2765 (m
->flags
& CEPH_OSD_FLAG_ONDISK
) ||
2766 !(req
->r_flags
& CEPH_OSD_FLAG_ONDISK
));
2770 * handle osd op reply. either call the callback if it is specified,
2771 * or do the completion to wake up the waiting thread.
2773 * ->r_unsafe_callback is set? yes no
2775 * first reply is OK (needed r_cb/r_completion, r_cb/r_completion,
2776 * any or needed/got safe) r_safe_completion r_safe_completion
2778 * first reply is unsafe r_unsafe_cb(true) (nothing)
2780 * when we get the safe reply r_unsafe_cb(false), r_cb/r_completion,
2781 * r_safe_completion r_safe_completion
2783 static void handle_reply(struct ceph_osd
*osd
, struct ceph_msg
*msg
)
2785 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
2786 struct ceph_osd_request
*req
;
2787 struct MOSDOpReply m
;
2788 u64 tid
= le64_to_cpu(msg
->hdr
.tid
);
2794 dout("%s msg %p tid %llu\n", __func__
, msg
, tid
);
2796 down_read(&osdc
->lock
);
2797 if (!osd_registered(osd
)) {
2798 dout("%s osd%d unknown\n", __func__
, osd
->o_osd
);
2799 goto out_unlock_osdc
;
2801 WARN_ON(osd
->o_osd
!= le64_to_cpu(msg
->hdr
.src
.num
));
2803 mutex_lock(&osd
->lock
);
2804 req
= lookup_request(&osd
->o_requests
, tid
);
2806 dout("%s osd%d tid %llu unknown\n", __func__
, osd
->o_osd
, tid
);
2807 goto out_unlock_session
;
2810 ret
= decode_MOSDOpReply(msg
, &m
);
2812 pr_err("failed to decode MOSDOpReply for tid %llu: %d\n",
2817 dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n",
2818 __func__
, req
, req
->r_tid
, m
.flags
, m
.pgid
.pool
, m
.pgid
.seed
,
2819 m
.epoch
, m
.retry_attempt
, le32_to_cpu(m
.replay_version
.epoch
),
2820 le64_to_cpu(m
.replay_version
.version
), m
.user_version
);
2822 if (m
.retry_attempt
>= 0) {
2823 if (m
.retry_attempt
!= req
->r_attempts
- 1) {
2824 dout("req %p tid %llu retry_attempt %d != %d, ignoring\n",
2825 req
, req
->r_tid
, m
.retry_attempt
,
2826 req
->r_attempts
- 1);
2827 goto out_unlock_session
;
2830 WARN_ON(1); /* MOSDOpReply v4 is assumed */
2833 if (!ceph_oloc_empty(&m
.redirect
.oloc
)) {
2834 dout("req %p tid %llu redirect pool %lld\n", req
, req
->r_tid
,
2835 m
.redirect
.oloc
.pool
);
2836 unlink_request(osd
, req
);
2837 mutex_unlock(&osd
->lock
);
2839 ceph_oloc_copy(&req
->r_t
.target_oloc
, &m
.redirect
.oloc
);
2840 req
->r_flags
|= CEPH_OSD_FLAG_REDIRECTED
;
2842 __submit_request(req
, false);
2843 goto out_unlock_osdc
;
2846 if (m
.num_ops
!= req
->r_num_ops
) {
2847 pr_err("num_ops %d != %d for tid %llu\n", m
.num_ops
,
2848 req
->r_num_ops
, req
->r_tid
);
2851 for (i
= 0; i
< req
->r_num_ops
; i
++) {
2852 dout(" req %p tid %llu op %d rval %d len %u\n", req
,
2853 req
->r_tid
, i
, m
.rval
[i
], m
.outdata_len
[i
]);
2854 req
->r_ops
[i
].rval
= m
.rval
[i
];
2855 req
->r_ops
[i
].outdata_len
= m
.outdata_len
[i
];
2856 data_len
+= m
.outdata_len
[i
];
2858 if (data_len
!= le32_to_cpu(msg
->hdr
.data_len
)) {
2859 pr_err("sum of lens %u != %u for tid %llu\n", data_len
,
2860 le32_to_cpu(msg
->hdr
.data_len
), req
->r_tid
);
2863 dout("%s req %p tid %llu acked %d result %d data_len %u\n", __func__
,
2864 req
, req
->r_tid
, req
->r_got_reply
, m
.result
, data_len
);
2866 already_acked
= req
->r_got_reply
;
2867 if (!already_acked
) {
2868 req
->r_result
= m
.result
?: data_len
;
2869 req
->r_replay_version
= m
.replay_version
; /* struct */
2870 req
->r_got_reply
= true;
2871 } else if (!(m
.flags
& CEPH_OSD_FLAG_ONDISK
)) {
2872 dout("req %p tid %llu dup ack\n", req
, req
->r_tid
);
2873 goto out_unlock_session
;
2876 if (done_request(req
, &m
)) {
2877 __finish_request(req
);
2878 if (req
->r_linger
) {
2879 WARN_ON(req
->r_unsafe_callback
);
2880 dout("req %p tid %llu cb (locked)\n", req
, req
->r_tid
);
2881 __complete_request(req
);
2885 mutex_unlock(&osd
->lock
);
2886 up_read(&osdc
->lock
);
2888 if (done_request(req
, &m
)) {
2889 if (already_acked
&& req
->r_unsafe_callback
) {
2890 dout("req %p tid %llu safe-cb\n", req
, req
->r_tid
);
2891 req
->r_unsafe_callback(req
, false);
2892 } else if (!req
->r_linger
) {
2893 dout("req %p tid %llu cb\n", req
, req
->r_tid
);
2894 __complete_request(req
);
2897 if (req
->r_unsafe_callback
) {
2898 dout("req %p tid %llu unsafe-cb\n", req
, req
->r_tid
);
2899 req
->r_unsafe_callback(req
, true);
2904 if (m
.flags
& CEPH_OSD_FLAG_ONDISK
)
2905 complete_all(&req
->r_safe_completion
);
2907 ceph_osdc_put_request(req
);
2911 complete_request(req
, -EIO
);
2913 mutex_unlock(&osd
->lock
);
2915 up_read(&osdc
->lock
);
2918 static void set_pool_was_full(struct ceph_osd_client
*osdc
)
2922 for (n
= rb_first(&osdc
->osdmap
->pg_pools
); n
; n
= rb_next(n
)) {
2923 struct ceph_pg_pool_info
*pi
=
2924 rb_entry(n
, struct ceph_pg_pool_info
, node
);
2926 pi
->was_full
= __pool_full(pi
);
2930 static bool pool_cleared_full(struct ceph_osd_client
*osdc
, s64 pool_id
)
2932 struct ceph_pg_pool_info
*pi
;
2934 pi
= ceph_pg_pool_by_id(osdc
->osdmap
, pool_id
);
2938 return pi
->was_full
&& !__pool_full(pi
);
2941 static enum calc_target_result
2942 recalc_linger_target(struct ceph_osd_linger_request
*lreq
)
2944 struct ceph_osd_client
*osdc
= lreq
->osdc
;
2945 enum calc_target_result ct_res
;
2947 ct_res
= calc_target(osdc
, &lreq
->t
, &lreq
->last_force_resend
, true);
2948 if (ct_res
== CALC_TARGET_NEED_RESEND
) {
2949 struct ceph_osd
*osd
;
2951 osd
= lookup_create_osd(osdc
, lreq
->t
.osd
, true);
2952 if (osd
!= lreq
->osd
) {
2953 unlink_linger(lreq
->osd
, lreq
);
2954 link_linger(osd
, lreq
);
2962 * Requeue requests whose mapping to an OSD has changed.
2964 static void scan_requests(struct ceph_osd
*osd
,
2967 bool check_pool_cleared_full
,
2968 struct rb_root
*need_resend
,
2969 struct list_head
*need_resend_linger
)
2971 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
2973 bool force_resend_writes
;
2975 for (n
= rb_first(&osd
->o_linger_requests
); n
; ) {
2976 struct ceph_osd_linger_request
*lreq
=
2977 rb_entry(n
, struct ceph_osd_linger_request
, node
);
2978 enum calc_target_result ct_res
;
2980 n
= rb_next(n
); /* recalc_linger_target() */
2982 dout("%s lreq %p linger_id %llu\n", __func__
, lreq
,
2984 ct_res
= recalc_linger_target(lreq
);
2986 case CALC_TARGET_NO_ACTION
:
2987 force_resend_writes
= cleared_full
||
2988 (check_pool_cleared_full
&&
2989 pool_cleared_full(osdc
, lreq
->t
.base_oloc
.pool
));
2990 if (!force_resend
&& !force_resend_writes
)
2994 case CALC_TARGET_NEED_RESEND
:
2995 cancel_linger_map_check(lreq
);
2997 * scan_requests() for the previous epoch(s)
2998 * may have already added it to the list, since
2999 * it's not unlinked here.
3001 if (list_empty(&lreq
->scan_item
))
3002 list_add_tail(&lreq
->scan_item
, need_resend_linger
);
3004 case CALC_TARGET_POOL_DNE
:
3005 check_linger_pool_dne(lreq
);
3010 for (n
= rb_first(&osd
->o_requests
); n
; ) {
3011 struct ceph_osd_request
*req
=
3012 rb_entry(n
, struct ceph_osd_request
, r_node
);
3013 enum calc_target_result ct_res
;
3015 n
= rb_next(n
); /* unlink_request(), check_pool_dne() */
3017 dout("%s req %p tid %llu\n", __func__
, req
, req
->r_tid
);
3018 ct_res
= calc_target(osdc
, &req
->r_t
,
3019 &req
->r_last_force_resend
, false);
3021 case CALC_TARGET_NO_ACTION
:
3022 force_resend_writes
= cleared_full
||
3023 (check_pool_cleared_full
&&
3024 pool_cleared_full(osdc
, req
->r_t
.base_oloc
.pool
));
3025 if (!force_resend
&&
3026 (!(req
->r_flags
& CEPH_OSD_FLAG_WRITE
) ||
3027 !force_resend_writes
))
3031 case CALC_TARGET_NEED_RESEND
:
3032 cancel_map_check(req
);
3033 unlink_request(osd
, req
);
3034 insert_request(need_resend
, req
);
3036 case CALC_TARGET_POOL_DNE
:
3037 check_pool_dne(req
);
3043 static int handle_one_map(struct ceph_osd_client
*osdc
,
3044 void *p
, void *end
, bool incremental
,
3045 struct rb_root
*need_resend
,
3046 struct list_head
*need_resend_linger
)
3048 struct ceph_osdmap
*newmap
;
3050 bool skipped_map
= false;
3053 was_full
= ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_FULL
);
3054 set_pool_was_full(osdc
);
3057 newmap
= osdmap_apply_incremental(&p
, end
, osdc
->osdmap
);
3059 newmap
= ceph_osdmap_decode(&p
, end
);
3061 return PTR_ERR(newmap
);
3063 if (newmap
!= osdc
->osdmap
) {
3065 * Preserve ->was_full before destroying the old map.
3066 * For pools that weren't in the old map, ->was_full
3069 for (n
= rb_first(&newmap
->pg_pools
); n
; n
= rb_next(n
)) {
3070 struct ceph_pg_pool_info
*pi
=
3071 rb_entry(n
, struct ceph_pg_pool_info
, node
);
3072 struct ceph_pg_pool_info
*old_pi
;
3074 old_pi
= ceph_pg_pool_by_id(osdc
->osdmap
, pi
->id
);
3076 pi
->was_full
= old_pi
->was_full
;
3078 WARN_ON(pi
->was_full
);
3081 if (osdc
->osdmap
->epoch
&&
3082 osdc
->osdmap
->epoch
+ 1 < newmap
->epoch
) {
3083 WARN_ON(incremental
);
3087 ceph_osdmap_destroy(osdc
->osdmap
);
3088 osdc
->osdmap
= newmap
;
3091 was_full
&= !ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_FULL
);
3092 scan_requests(&osdc
->homeless_osd
, skipped_map
, was_full
, true,
3093 need_resend
, need_resend_linger
);
3095 for (n
= rb_first(&osdc
->osds
); n
; ) {
3096 struct ceph_osd
*osd
= rb_entry(n
, struct ceph_osd
, o_node
);
3098 n
= rb_next(n
); /* close_osd() */
3100 scan_requests(osd
, skipped_map
, was_full
, true, need_resend
,
3101 need_resend_linger
);
3102 if (!ceph_osd_is_up(osdc
->osdmap
, osd
->o_osd
) ||
3103 memcmp(&osd
->o_con
.peer_addr
,
3104 ceph_osd_addr(osdc
->osdmap
, osd
->o_osd
),
3105 sizeof(struct ceph_entity_addr
)))
3112 static void kick_requests(struct ceph_osd_client
*osdc
,
3113 struct rb_root
*need_resend
,
3114 struct list_head
*need_resend_linger
)
3116 struct ceph_osd_linger_request
*lreq
, *nlreq
;
3119 for (n
= rb_first(need_resend
); n
; ) {
3120 struct ceph_osd_request
*req
=
3121 rb_entry(n
, struct ceph_osd_request
, r_node
);
3122 struct ceph_osd
*osd
;
3125 erase_request(need_resend
, req
); /* before link_request() */
3127 WARN_ON(req
->r_osd
);
3128 calc_target(osdc
, &req
->r_t
, NULL
, false);
3129 osd
= lookup_create_osd(osdc
, req
->r_t
.osd
, true);
3130 link_request(osd
, req
);
3131 if (!req
->r_linger
) {
3132 if (!osd_homeless(osd
) && !req
->r_t
.paused
)
3135 cancel_linger_request(req
);
3139 list_for_each_entry_safe(lreq
, nlreq
, need_resend_linger
, scan_item
) {
3140 if (!osd_homeless(lreq
->osd
))
3143 list_del_init(&lreq
->scan_item
);
3148 * Process updated osd map.
3150 * The message contains any number of incremental and full maps, normally
3151 * indicating some sort of topology change in the cluster. Kick requests
3152 * off to different OSDs as needed.
3154 void ceph_osdc_handle_map(struct ceph_osd_client
*osdc
, struct ceph_msg
*msg
)
3156 void *p
= msg
->front
.iov_base
;
3157 void *const end
= p
+ msg
->front
.iov_len
;
3158 u32 nr_maps
, maplen
;
3160 struct ceph_fsid fsid
;
3161 struct rb_root need_resend
= RB_ROOT
;
3162 LIST_HEAD(need_resend_linger
);
3163 bool handled_incremental
= false;
3164 bool was_pauserd
, was_pausewr
;
3165 bool pauserd
, pausewr
;
3168 dout("%s have %u\n", __func__
, osdc
->osdmap
->epoch
);
3169 down_write(&osdc
->lock
);
3172 ceph_decode_need(&p
, end
, sizeof(fsid
), bad
);
3173 ceph_decode_copy(&p
, &fsid
, sizeof(fsid
));
3174 if (ceph_check_fsid(osdc
->client
, &fsid
) < 0)
3177 was_pauserd
= ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSERD
);
3178 was_pausewr
= ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSEWR
) ||
3179 ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_FULL
) ||
3180 have_pool_full(osdc
);
3182 /* incremental maps */
3183 ceph_decode_32_safe(&p
, end
, nr_maps
, bad
);
3184 dout(" %d inc maps\n", nr_maps
);
3185 while (nr_maps
> 0) {
3186 ceph_decode_need(&p
, end
, 2*sizeof(u32
), bad
);
3187 epoch
= ceph_decode_32(&p
);
3188 maplen
= ceph_decode_32(&p
);
3189 ceph_decode_need(&p
, end
, maplen
, bad
);
3190 if (osdc
->osdmap
->epoch
&&
3191 osdc
->osdmap
->epoch
+ 1 == epoch
) {
3192 dout("applying incremental map %u len %d\n",
3194 err
= handle_one_map(osdc
, p
, p
+ maplen
, true,
3195 &need_resend
, &need_resend_linger
);
3198 handled_incremental
= true;
3200 dout("ignoring incremental map %u len %d\n",
3206 if (handled_incremental
)
3210 ceph_decode_32_safe(&p
, end
, nr_maps
, bad
);
3211 dout(" %d full maps\n", nr_maps
);
3213 ceph_decode_need(&p
, end
, 2*sizeof(u32
), bad
);
3214 epoch
= ceph_decode_32(&p
);
3215 maplen
= ceph_decode_32(&p
);
3216 ceph_decode_need(&p
, end
, maplen
, bad
);
3218 dout("skipping non-latest full map %u len %d\n",
3220 } else if (osdc
->osdmap
->epoch
>= epoch
) {
3221 dout("skipping full map %u len %d, "
3222 "older than our %u\n", epoch
, maplen
,
3223 osdc
->osdmap
->epoch
);
3225 dout("taking full map %u len %d\n", epoch
, maplen
);
3226 err
= handle_one_map(osdc
, p
, p
+ maplen
, false,
3227 &need_resend
, &need_resend_linger
);
3237 * subscribe to subsequent osdmap updates if full to ensure
3238 * we find out when we are no longer full and stop returning
3241 pauserd
= ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSERD
);
3242 pausewr
= ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSEWR
) ||
3243 ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_FULL
) ||
3244 have_pool_full(osdc
);
3245 if (was_pauserd
|| was_pausewr
|| pauserd
|| pausewr
)
3246 maybe_request_map(osdc
);
3248 kick_requests(osdc
, &need_resend
, &need_resend_linger
);
3250 ceph_monc_got_map(&osdc
->client
->monc
, CEPH_SUB_OSDMAP
,
3251 osdc
->osdmap
->epoch
);
3252 up_write(&osdc
->lock
);
3253 wake_up_all(&osdc
->client
->auth_wq
);
3257 pr_err("osdc handle_map corrupt msg\n");
3259 up_write(&osdc
->lock
);
3263 * Resubmit requests pending on the given osd.
3265 static void kick_osd_requests(struct ceph_osd
*osd
)
3269 for (n
= rb_first(&osd
->o_requests
); n
; ) {
3270 struct ceph_osd_request
*req
=
3271 rb_entry(n
, struct ceph_osd_request
, r_node
);
3273 n
= rb_next(n
); /* cancel_linger_request() */
3275 if (!req
->r_linger
) {
3276 if (!req
->r_t
.paused
)
3279 cancel_linger_request(req
);
3282 for (n
= rb_first(&osd
->o_linger_requests
); n
; n
= rb_next(n
)) {
3283 struct ceph_osd_linger_request
*lreq
=
3284 rb_entry(n
, struct ceph_osd_linger_request
, node
);
3291 * If the osd connection drops, we need to resubmit all requests.
3293 static void osd_fault(struct ceph_connection
*con
)
3295 struct ceph_osd
*osd
= con
->private;
3296 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
3298 dout("%s osd %p osd%d\n", __func__
, osd
, osd
->o_osd
);
3300 down_write(&osdc
->lock
);
3301 if (!osd_registered(osd
)) {
3302 dout("%s osd%d unknown\n", __func__
, osd
->o_osd
);
3306 if (!reopen_osd(osd
))
3307 kick_osd_requests(osd
);
3308 maybe_request_map(osdc
);
3311 up_write(&osdc
->lock
);
3315 * Process osd watch notifications
3317 static void handle_watch_notify(struct ceph_osd_client
*osdc
,
3318 struct ceph_msg
*msg
)
3320 void *p
= msg
->front
.iov_base
;
3321 void *const end
= p
+ msg
->front
.iov_len
;
3322 struct ceph_osd_linger_request
*lreq
;
3323 struct linger_work
*lwork
;
3324 u8 proto_ver
, opcode
;
3325 u64 cookie
, notify_id
;
3326 u64 notifier_id
= 0;
3327 s32 return_code
= 0;
3328 void *payload
= NULL
;
3329 u32 payload_len
= 0;
3331 ceph_decode_8_safe(&p
, end
, proto_ver
, bad
);
3332 ceph_decode_8_safe(&p
, end
, opcode
, bad
);
3333 ceph_decode_64_safe(&p
, end
, cookie
, bad
);
3334 p
+= 8; /* skip ver */
3335 ceph_decode_64_safe(&p
, end
, notify_id
, bad
);
3337 if (proto_ver
>= 1) {
3338 ceph_decode_32_safe(&p
, end
, payload_len
, bad
);
3339 ceph_decode_need(&p
, end
, payload_len
, bad
);
3344 if (le16_to_cpu(msg
->hdr
.version
) >= 2)
3345 ceph_decode_32_safe(&p
, end
, return_code
, bad
);
3347 if (le16_to_cpu(msg
->hdr
.version
) >= 3)
3348 ceph_decode_64_safe(&p
, end
, notifier_id
, bad
);
3350 down_read(&osdc
->lock
);
3351 lreq
= lookup_linger_osdc(&osdc
->linger_requests
, cookie
);
3353 dout("%s opcode %d cookie %llu dne\n", __func__
, opcode
,
3355 goto out_unlock_osdc
;
3358 mutex_lock(&lreq
->lock
);
3359 dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__
,
3360 opcode
, cookie
, lreq
, lreq
->is_watch
);
3361 if (opcode
== CEPH_WATCH_EVENT_DISCONNECT
) {
3362 if (!lreq
->last_error
) {
3363 lreq
->last_error
= -ENOTCONN
;
3364 queue_watch_error(lreq
);
3366 } else if (!lreq
->is_watch
) {
3367 /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */
3368 if (lreq
->notify_id
&& lreq
->notify_id
!= notify_id
) {
3369 dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq
,
3370 lreq
->notify_id
, notify_id
);
3371 } else if (!completion_done(&lreq
->notify_finish_wait
)) {
3372 struct ceph_msg_data
*data
=
3373 list_first_entry_or_null(&msg
->data
,
3374 struct ceph_msg_data
,
3378 if (lreq
->preply_pages
) {
3379 WARN_ON(data
->type
!=
3380 CEPH_MSG_DATA_PAGES
);
3381 *lreq
->preply_pages
= data
->pages
;
3382 *lreq
->preply_len
= data
->length
;
3384 ceph_release_page_vector(data
->pages
,
3385 calc_pages_for(0, data
->length
));
3388 lreq
->notify_finish_error
= return_code
;
3389 complete_all(&lreq
->notify_finish_wait
);
3392 /* CEPH_WATCH_EVENT_NOTIFY */
3393 lwork
= lwork_alloc(lreq
, do_watch_notify
);
3395 pr_err("failed to allocate notify-lwork\n");
3396 goto out_unlock_lreq
;
3399 lwork
->notify
.notify_id
= notify_id
;
3400 lwork
->notify
.notifier_id
= notifier_id
;
3401 lwork
->notify
.payload
= payload
;
3402 lwork
->notify
.payload_len
= payload_len
;
3403 lwork
->notify
.msg
= ceph_msg_get(msg
);
3408 mutex_unlock(&lreq
->lock
);
3410 up_read(&osdc
->lock
);
3414 pr_err("osdc handle_watch_notify corrupt msg\n");
3418 * Register request, send initial attempt.
3420 int ceph_osdc_start_request(struct ceph_osd_client
*osdc
,
3421 struct ceph_osd_request
*req
,
3424 down_read(&osdc
->lock
);
3425 submit_request(req
, false);
3426 up_read(&osdc
->lock
);
3430 EXPORT_SYMBOL(ceph_osdc_start_request
);
3433 * Unregister a registered request. The request is not completed (i.e.
3434 * no callbacks or wakeups) - higher layers are supposed to know what
3435 * they are canceling.
3437 void ceph_osdc_cancel_request(struct ceph_osd_request
*req
)
3439 struct ceph_osd_client
*osdc
= req
->r_osdc
;
3441 down_write(&osdc
->lock
);
3443 cancel_request(req
);
3444 up_write(&osdc
->lock
);
3446 EXPORT_SYMBOL(ceph_osdc_cancel_request
);
3449 * @timeout: in jiffies, 0 means "wait forever"
3451 static int wait_request_timeout(struct ceph_osd_request
*req
,
3452 unsigned long timeout
)
3456 dout("%s req %p tid %llu\n", __func__
, req
, req
->r_tid
);
3457 left
= wait_for_completion_killable_timeout(&req
->r_completion
,
3458 ceph_timeout_jiffies(timeout
));
3460 left
= left
?: -ETIMEDOUT
;
3461 ceph_osdc_cancel_request(req
);
3463 /* kludge - need to to wake ceph_osdc_sync() */
3464 complete_all(&req
->r_safe_completion
);
3466 left
= req
->r_result
; /* completed */
3473 * wait for a request to complete
3475 int ceph_osdc_wait_request(struct ceph_osd_client
*osdc
,
3476 struct ceph_osd_request
*req
)
3478 return wait_request_timeout(req
, 0);
3480 EXPORT_SYMBOL(ceph_osdc_wait_request
);
3483 * sync - wait for all in-flight requests to flush. avoid starvation.
3485 void ceph_osdc_sync(struct ceph_osd_client
*osdc
)
3487 struct rb_node
*n
, *p
;
3488 u64 last_tid
= atomic64_read(&osdc
->last_tid
);
3491 down_read(&osdc
->lock
);
3492 for (n
= rb_first(&osdc
->osds
); n
; n
= rb_next(n
)) {
3493 struct ceph_osd
*osd
= rb_entry(n
, struct ceph_osd
, o_node
);
3495 mutex_lock(&osd
->lock
);
3496 for (p
= rb_first(&osd
->o_requests
); p
; p
= rb_next(p
)) {
3497 struct ceph_osd_request
*req
=
3498 rb_entry(p
, struct ceph_osd_request
, r_node
);
3500 if (req
->r_tid
> last_tid
)
3503 if (!(req
->r_flags
& CEPH_OSD_FLAG_WRITE
))
3506 ceph_osdc_get_request(req
);
3507 mutex_unlock(&osd
->lock
);
3508 up_read(&osdc
->lock
);
3509 dout("%s waiting on req %p tid %llu last_tid %llu\n",
3510 __func__
, req
, req
->r_tid
, last_tid
);
3511 wait_for_completion(&req
->r_safe_completion
);
3512 ceph_osdc_put_request(req
);
3516 mutex_unlock(&osd
->lock
);
3519 up_read(&osdc
->lock
);
3520 dout("%s done last_tid %llu\n", __func__
, last_tid
);
3522 EXPORT_SYMBOL(ceph_osdc_sync
);
3524 static struct ceph_osd_request
*
3525 alloc_linger_request(struct ceph_osd_linger_request
*lreq
)
3527 struct ceph_osd_request
*req
;
3529 req
= ceph_osdc_alloc_request(lreq
->osdc
, NULL
, 1, false, GFP_NOIO
);
3533 ceph_oid_copy(&req
->r_base_oid
, &lreq
->t
.base_oid
);
3534 ceph_oloc_copy(&req
->r_base_oloc
, &lreq
->t
.base_oloc
);
3536 if (ceph_osdc_alloc_messages(req
, GFP_NOIO
)) {
3537 ceph_osdc_put_request(req
);
3545 * Returns a handle, caller owns a ref.
3547 struct ceph_osd_linger_request
*
3548 ceph_osdc_watch(struct ceph_osd_client
*osdc
,
3549 struct ceph_object_id
*oid
,
3550 struct ceph_object_locator
*oloc
,
3551 rados_watchcb2_t wcb
,
3552 rados_watcherrcb_t errcb
,
3555 struct ceph_osd_linger_request
*lreq
;
3558 lreq
= linger_alloc(osdc
);
3560 return ERR_PTR(-ENOMEM
);
3562 lreq
->is_watch
= true;
3564 lreq
->errcb
= errcb
;
3566 lreq
->watch_valid_thru
= jiffies
;
3568 ceph_oid_copy(&lreq
->t
.base_oid
, oid
);
3569 ceph_oloc_copy(&lreq
->t
.base_oloc
, oloc
);
3570 lreq
->t
.flags
= CEPH_OSD_FLAG_WRITE
| CEPH_OSD_FLAG_ONDISK
;
3571 lreq
->mtime
= CURRENT_TIME
;
3573 lreq
->reg_req
= alloc_linger_request(lreq
);
3574 if (!lreq
->reg_req
) {
3579 lreq
->ping_req
= alloc_linger_request(lreq
);
3580 if (!lreq
->ping_req
) {
3585 down_write(&osdc
->lock
);
3586 linger_register(lreq
); /* before osd_req_op_* */
3587 osd_req_op_watch_init(lreq
->reg_req
, 0, lreq
->linger_id
,
3588 CEPH_OSD_WATCH_OP_WATCH
);
3589 osd_req_op_watch_init(lreq
->ping_req
, 0, lreq
->linger_id
,
3590 CEPH_OSD_WATCH_OP_PING
);
3591 linger_submit(lreq
);
3592 up_write(&osdc
->lock
);
3594 ret
= linger_reg_commit_wait(lreq
);
3596 linger_cancel(lreq
);
3604 return ERR_PTR(ret
);
3606 EXPORT_SYMBOL(ceph_osdc_watch
);
3611 * Times out after mount_timeout to preserve rbd unmap behaviour
3612 * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap
3613 * with mount_timeout").
3615 int ceph_osdc_unwatch(struct ceph_osd_client
*osdc
,
3616 struct ceph_osd_linger_request
*lreq
)
3618 struct ceph_options
*opts
= osdc
->client
->options
;
3619 struct ceph_osd_request
*req
;
3622 req
= ceph_osdc_alloc_request(osdc
, NULL
, 1, false, GFP_NOIO
);
3626 ceph_oid_copy(&req
->r_base_oid
, &lreq
->t
.base_oid
);
3627 ceph_oloc_copy(&req
->r_base_oloc
, &lreq
->t
.base_oloc
);
3628 req
->r_flags
= CEPH_OSD_FLAG_WRITE
| CEPH_OSD_FLAG_ONDISK
;
3629 req
->r_mtime
= CURRENT_TIME
;
3630 osd_req_op_watch_init(req
, 0, lreq
->linger_id
,
3631 CEPH_OSD_WATCH_OP_UNWATCH
);
3633 ret
= ceph_osdc_alloc_messages(req
, GFP_NOIO
);
3637 ceph_osdc_start_request(osdc
, req
, false);
3638 linger_cancel(lreq
);
3640 ret
= wait_request_timeout(req
, opts
->mount_timeout
);
3643 ceph_osdc_put_request(req
);
3646 EXPORT_SYMBOL(ceph_osdc_unwatch
);
3648 static int osd_req_op_notify_ack_init(struct ceph_osd_request
*req
, int which
,
3649 u64 notify_id
, u64 cookie
, void *payload
,
3652 struct ceph_osd_req_op
*op
;
3653 struct ceph_pagelist
*pl
;
3656 op
= _osd_req_op_init(req
, which
, CEPH_OSD_OP_NOTIFY_ACK
, 0);
3658 pl
= kmalloc(sizeof(*pl
), GFP_NOIO
);
3662 ceph_pagelist_init(pl
);
3663 ret
= ceph_pagelist_encode_64(pl
, notify_id
);
3664 ret
|= ceph_pagelist_encode_64(pl
, cookie
);
3666 ret
|= ceph_pagelist_encode_32(pl
, payload_len
);
3667 ret
|= ceph_pagelist_append(pl
, payload
, payload_len
);
3669 ret
|= ceph_pagelist_encode_32(pl
, 0);
3672 ceph_pagelist_release(pl
);
3676 ceph_osd_data_pagelist_init(&op
->notify_ack
.request_data
, pl
);
3677 op
->indata_len
= pl
->length
;
3681 int ceph_osdc_notify_ack(struct ceph_osd_client
*osdc
,
3682 struct ceph_object_id
*oid
,
3683 struct ceph_object_locator
*oloc
,
3689 struct ceph_osd_request
*req
;
3692 req
= ceph_osdc_alloc_request(osdc
, NULL
, 1, false, GFP_NOIO
);
3696 ceph_oid_copy(&req
->r_base_oid
, oid
);
3697 ceph_oloc_copy(&req
->r_base_oloc
, oloc
);
3698 req
->r_flags
= CEPH_OSD_FLAG_READ
;
3700 ret
= ceph_osdc_alloc_messages(req
, GFP_NOIO
);
3704 ret
= osd_req_op_notify_ack_init(req
, 0, notify_id
, cookie
, payload
,
3709 ceph_osdc_start_request(osdc
, req
, false);
3710 ret
= ceph_osdc_wait_request(osdc
, req
);
3713 ceph_osdc_put_request(req
);
3716 EXPORT_SYMBOL(ceph_osdc_notify_ack
);
3718 static int osd_req_op_notify_init(struct ceph_osd_request
*req
, int which
,
3719 u64 cookie
, u32 prot_ver
, u32 timeout
,
3720 void *payload
, size_t payload_len
)
3722 struct ceph_osd_req_op
*op
;
3723 struct ceph_pagelist
*pl
;
3726 op
= _osd_req_op_init(req
, which
, CEPH_OSD_OP_NOTIFY
, 0);
3727 op
->notify
.cookie
= cookie
;
3729 pl
= kmalloc(sizeof(*pl
), GFP_NOIO
);
3733 ceph_pagelist_init(pl
);
3734 ret
= ceph_pagelist_encode_32(pl
, 1); /* prot_ver */
3735 ret
|= ceph_pagelist_encode_32(pl
, timeout
);
3736 ret
|= ceph_pagelist_encode_32(pl
, payload_len
);
3737 ret
|= ceph_pagelist_append(pl
, payload
, payload_len
);
3739 ceph_pagelist_release(pl
);
3743 ceph_osd_data_pagelist_init(&op
->notify
.request_data
, pl
);
3744 op
->indata_len
= pl
->length
;
3749 * @timeout: in seconds
3751 * @preply_{pages,len} are initialized both on success and error.
3752 * The caller is responsible for:
3754 * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len))
3756 int ceph_osdc_notify(struct ceph_osd_client
*osdc
,
3757 struct ceph_object_id
*oid
,
3758 struct ceph_object_locator
*oloc
,
3762 struct page
***preply_pages
,
3765 struct ceph_osd_linger_request
*lreq
;
3766 struct page
**pages
;
3771 *preply_pages
= NULL
;
3775 lreq
= linger_alloc(osdc
);
3779 lreq
->preply_pages
= preply_pages
;
3780 lreq
->preply_len
= preply_len
;
3782 ceph_oid_copy(&lreq
->t
.base_oid
, oid
);
3783 ceph_oloc_copy(&lreq
->t
.base_oloc
, oloc
);
3784 lreq
->t
.flags
= CEPH_OSD_FLAG_READ
;
3786 lreq
->reg_req
= alloc_linger_request(lreq
);
3787 if (!lreq
->reg_req
) {
3793 pages
= ceph_alloc_page_vector(1, GFP_NOIO
);
3794 if (IS_ERR(pages
)) {
3795 ret
= PTR_ERR(pages
);
3799 down_write(&osdc
->lock
);
3800 linger_register(lreq
); /* before osd_req_op_* */
3801 ret
= osd_req_op_notify_init(lreq
->reg_req
, 0, lreq
->linger_id
, 1,
3802 timeout
, payload
, payload_len
);
3804 linger_unregister(lreq
);
3805 up_write(&osdc
->lock
);
3806 ceph_release_page_vector(pages
, 1);
3809 ceph_osd_data_pages_init(osd_req_op_data(lreq
->reg_req
, 0, notify
,
3811 pages
, PAGE_SIZE
, 0, false, true);
3812 linger_submit(lreq
);
3813 up_write(&osdc
->lock
);
3815 ret
= linger_reg_commit_wait(lreq
);
3817 ret
= linger_notify_finish_wait(lreq
);
3819 dout("lreq %p failed to initiate notify %d\n", lreq
, ret
);
3821 linger_cancel(lreq
);
3826 EXPORT_SYMBOL(ceph_osdc_notify
);
3829 * Return the number of milliseconds since the watch was last
3830 * confirmed, or an error. If there is an error, the watch is no
3831 * longer valid, and should be destroyed with ceph_osdc_unwatch().
3833 int ceph_osdc_watch_check(struct ceph_osd_client
*osdc
,
3834 struct ceph_osd_linger_request
*lreq
)
3836 unsigned long stamp
, age
;
3839 down_read(&osdc
->lock
);
3840 mutex_lock(&lreq
->lock
);
3841 stamp
= lreq
->watch_valid_thru
;
3842 if (!list_empty(&lreq
->pending_lworks
)) {
3843 struct linger_work
*lwork
=
3844 list_first_entry(&lreq
->pending_lworks
,
3848 if (time_before(lwork
->queued_stamp
, stamp
))
3849 stamp
= lwork
->queued_stamp
;
3851 age
= jiffies
- stamp
;
3852 dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__
,
3853 lreq
, lreq
->linger_id
, age
, lreq
->last_error
);
3854 /* we are truncating to msecs, so return a safe upper bound */
3855 ret
= lreq
->last_error
?: 1 + jiffies_to_msecs(age
);
3857 mutex_unlock(&lreq
->lock
);
3858 up_read(&osdc
->lock
);
3863 * Call all pending notify callbacks - for use after a watch is
3864 * unregistered, to make sure no more callbacks for it will be invoked
3866 void ceph_osdc_flush_notifies(struct ceph_osd_client
*osdc
)
3868 flush_workqueue(osdc
->notify_wq
);
3870 EXPORT_SYMBOL(ceph_osdc_flush_notifies
);
3872 void ceph_osdc_maybe_request_map(struct ceph_osd_client
*osdc
)
3874 down_read(&osdc
->lock
);
3875 maybe_request_map(osdc
);
3876 up_read(&osdc
->lock
);
3878 EXPORT_SYMBOL(ceph_osdc_maybe_request_map
);
3883 int ceph_osdc_init(struct ceph_osd_client
*osdc
, struct ceph_client
*client
)
3888 osdc
->client
= client
;
3889 init_rwsem(&osdc
->lock
);
3890 osdc
->osds
= RB_ROOT
;
3891 INIT_LIST_HEAD(&osdc
->osd_lru
);
3892 spin_lock_init(&osdc
->osd_lru_lock
);
3893 osd_init(&osdc
->homeless_osd
);
3894 osdc
->homeless_osd
.o_osdc
= osdc
;
3895 osdc
->homeless_osd
.o_osd
= CEPH_HOMELESS_OSD
;
3896 osdc
->linger_requests
= RB_ROOT
;
3897 osdc
->map_checks
= RB_ROOT
;
3898 osdc
->linger_map_checks
= RB_ROOT
;
3899 INIT_DELAYED_WORK(&osdc
->timeout_work
, handle_timeout
);
3900 INIT_DELAYED_WORK(&osdc
->osds_timeout_work
, handle_osds_timeout
);
3903 osdc
->osdmap
= ceph_osdmap_alloc();
3907 osdc
->req_mempool
= mempool_create_slab_pool(10,
3908 ceph_osd_request_cache
);
3909 if (!osdc
->req_mempool
)
3912 err
= ceph_msgpool_init(&osdc
->msgpool_op
, CEPH_MSG_OSD_OP
,
3913 PAGE_SIZE
, 10, true, "osd_op");
3916 err
= ceph_msgpool_init(&osdc
->msgpool_op_reply
, CEPH_MSG_OSD_OPREPLY
,
3917 PAGE_SIZE
, 10, true, "osd_op_reply");
3922 osdc
->notify_wq
= create_singlethread_workqueue("ceph-watch-notify");
3923 if (!osdc
->notify_wq
)
3924 goto out_msgpool_reply
;
3926 schedule_delayed_work(&osdc
->timeout_work
,
3927 osdc
->client
->options
->osd_keepalive_timeout
);
3928 schedule_delayed_work(&osdc
->osds_timeout_work
,
3929 round_jiffies_relative(osdc
->client
->options
->osd_idle_ttl
));
3934 ceph_msgpool_destroy(&osdc
->msgpool_op_reply
);
3936 ceph_msgpool_destroy(&osdc
->msgpool_op
);
3938 mempool_destroy(osdc
->req_mempool
);
3940 ceph_osdmap_destroy(osdc
->osdmap
);
3945 void ceph_osdc_stop(struct ceph_osd_client
*osdc
)
3947 flush_workqueue(osdc
->notify_wq
);
3948 destroy_workqueue(osdc
->notify_wq
);
3949 cancel_delayed_work_sync(&osdc
->timeout_work
);
3950 cancel_delayed_work_sync(&osdc
->osds_timeout_work
);
3952 down_write(&osdc
->lock
);
3953 while (!RB_EMPTY_ROOT(&osdc
->osds
)) {
3954 struct ceph_osd
*osd
= rb_entry(rb_first(&osdc
->osds
),
3955 struct ceph_osd
, o_node
);
3958 up_write(&osdc
->lock
);
3959 WARN_ON(atomic_read(&osdc
->homeless_osd
.o_ref
) != 1);
3960 osd_cleanup(&osdc
->homeless_osd
);
3962 WARN_ON(!list_empty(&osdc
->osd_lru
));
3963 WARN_ON(!RB_EMPTY_ROOT(&osdc
->linger_requests
));
3964 WARN_ON(!RB_EMPTY_ROOT(&osdc
->map_checks
));
3965 WARN_ON(!RB_EMPTY_ROOT(&osdc
->linger_map_checks
));
3966 WARN_ON(atomic_read(&osdc
->num_requests
));
3967 WARN_ON(atomic_read(&osdc
->num_homeless
));
3969 ceph_osdmap_destroy(osdc
->osdmap
);
3970 mempool_destroy(osdc
->req_mempool
);
3971 ceph_msgpool_destroy(&osdc
->msgpool_op
);
3972 ceph_msgpool_destroy(&osdc
->msgpool_op_reply
);
3976 * Read some contiguous pages. If we cross a stripe boundary, shorten
3977 * *plen. Return number of bytes read, or error.
3979 int ceph_osdc_readpages(struct ceph_osd_client
*osdc
,
3980 struct ceph_vino vino
, struct ceph_file_layout
*layout
,
3982 u32 truncate_seq
, u64 truncate_size
,
3983 struct page
**pages
, int num_pages
, int page_align
)
3985 struct ceph_osd_request
*req
;
3988 dout("readpages on ino %llx.%llx on %llu~%llu\n", vino
.ino
,
3989 vino
.snap
, off
, *plen
);
3990 req
= ceph_osdc_new_request(osdc
, layout
, vino
, off
, plen
, 0, 1,
3991 CEPH_OSD_OP_READ
, CEPH_OSD_FLAG_READ
,
3992 NULL
, truncate_seq
, truncate_size
,
3995 return PTR_ERR(req
);
3997 /* it may be a short read due to an object boundary */
3998 osd_req_op_extent_osd_data_pages(req
, 0,
3999 pages
, *plen
, page_align
, false, false);
4001 dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n",
4002 off
, *plen
, *plen
, page_align
);
4004 rc
= ceph_osdc_start_request(osdc
, req
, false);
4006 rc
= ceph_osdc_wait_request(osdc
, req
);
4008 ceph_osdc_put_request(req
);
4009 dout("readpages result %d\n", rc
);
4012 EXPORT_SYMBOL(ceph_osdc_readpages
);
4015 * do a synchronous write on N pages
4017 int ceph_osdc_writepages(struct ceph_osd_client
*osdc
, struct ceph_vino vino
,
4018 struct ceph_file_layout
*layout
,
4019 struct ceph_snap_context
*snapc
,
4021 u32 truncate_seq
, u64 truncate_size
,
4022 struct timespec
*mtime
,
4023 struct page
**pages
, int num_pages
)
4025 struct ceph_osd_request
*req
;
4027 int page_align
= off
& ~PAGE_MASK
;
4029 req
= ceph_osdc_new_request(osdc
, layout
, vino
, off
, &len
, 0, 1,
4031 CEPH_OSD_FLAG_ONDISK
| CEPH_OSD_FLAG_WRITE
,
4032 snapc
, truncate_seq
, truncate_size
,
4035 return PTR_ERR(req
);
4037 /* it may be a short write due to an object boundary */
4038 osd_req_op_extent_osd_data_pages(req
, 0, pages
, len
, page_align
,
4040 dout("writepages %llu~%llu (%llu bytes)\n", off
, len
, len
);
4042 req
->r_mtime
= *mtime
;
4043 rc
= ceph_osdc_start_request(osdc
, req
, true);
4045 rc
= ceph_osdc_wait_request(osdc
, req
);
4047 ceph_osdc_put_request(req
);
4050 dout("writepages result %d\n", rc
);
4053 EXPORT_SYMBOL(ceph_osdc_writepages
);
4055 int ceph_osdc_setup(void)
4057 size_t size
= sizeof(struct ceph_osd_request
) +
4058 CEPH_OSD_SLAB_OPS
* sizeof(struct ceph_osd_req_op
);
4060 BUG_ON(ceph_osd_request_cache
);
4061 ceph_osd_request_cache
= kmem_cache_create("ceph_osd_request", size
,
4064 return ceph_osd_request_cache
? 0 : -ENOMEM
;
4066 EXPORT_SYMBOL(ceph_osdc_setup
);
4068 void ceph_osdc_cleanup(void)
4070 BUG_ON(!ceph_osd_request_cache
);
4071 kmem_cache_destroy(ceph_osd_request_cache
);
4072 ceph_osd_request_cache
= NULL
;
4074 EXPORT_SYMBOL(ceph_osdc_cleanup
);
4077 * handle incoming message
4079 static void dispatch(struct ceph_connection
*con
, struct ceph_msg
*msg
)
4081 struct ceph_osd
*osd
= con
->private;
4082 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
4083 int type
= le16_to_cpu(msg
->hdr
.type
);
4086 case CEPH_MSG_OSD_MAP
:
4087 ceph_osdc_handle_map(osdc
, msg
);
4089 case CEPH_MSG_OSD_OPREPLY
:
4090 handle_reply(osd
, msg
);
4092 case CEPH_MSG_WATCH_NOTIFY
:
4093 handle_watch_notify(osdc
, msg
);
4097 pr_err("received unknown message type %d %s\n", type
,
4098 ceph_msg_type_name(type
));
4105 * Lookup and return message for incoming reply. Don't try to do
4106 * anything about a larger than preallocated data portion of the
4107 * message at the moment - for now, just skip the message.
4109 static struct ceph_msg
*get_reply(struct ceph_connection
*con
,
4110 struct ceph_msg_header
*hdr
,
4113 struct ceph_osd
*osd
= con
->private;
4114 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
4115 struct ceph_msg
*m
= NULL
;
4116 struct ceph_osd_request
*req
;
4117 int front_len
= le32_to_cpu(hdr
->front_len
);
4118 int data_len
= le32_to_cpu(hdr
->data_len
);
4119 u64 tid
= le64_to_cpu(hdr
->tid
);
4121 down_read(&osdc
->lock
);
4122 if (!osd_registered(osd
)) {
4123 dout("%s osd%d unknown, skipping\n", __func__
, osd
->o_osd
);
4125 goto out_unlock_osdc
;
4127 WARN_ON(osd
->o_osd
!= le64_to_cpu(hdr
->src
.num
));
4129 mutex_lock(&osd
->lock
);
4130 req
= lookup_request(&osd
->o_requests
, tid
);
4132 dout("%s osd%d tid %llu unknown, skipping\n", __func__
,
4135 goto out_unlock_session
;
4138 ceph_msg_revoke_incoming(req
->r_reply
);
4140 if (front_len
> req
->r_reply
->front_alloc_len
) {
4141 pr_warn("%s osd%d tid %llu front %d > preallocated %d\n",
4142 __func__
, osd
->o_osd
, req
->r_tid
, front_len
,
4143 req
->r_reply
->front_alloc_len
);
4144 m
= ceph_msg_new(CEPH_MSG_OSD_OPREPLY
, front_len
, GFP_NOFS
,
4147 goto out_unlock_session
;
4148 ceph_msg_put(req
->r_reply
);
4152 if (data_len
> req
->r_reply
->data_length
) {
4153 pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n",
4154 __func__
, osd
->o_osd
, req
->r_tid
, data_len
,
4155 req
->r_reply
->data_length
);
4158 goto out_unlock_session
;
4161 m
= ceph_msg_get(req
->r_reply
);
4162 dout("get_reply tid %lld %p\n", tid
, m
);
4165 mutex_unlock(&osd
->lock
);
4167 up_read(&osdc
->lock
);
4172 * TODO: switch to a msg-owned pagelist
4174 static struct ceph_msg
*alloc_msg_with_page_vector(struct ceph_msg_header
*hdr
)
4177 int type
= le16_to_cpu(hdr
->type
);
4178 u32 front_len
= le32_to_cpu(hdr
->front_len
);
4179 u32 data_len
= le32_to_cpu(hdr
->data_len
);
4181 m
= ceph_msg_new(type
, front_len
, GFP_NOIO
, false);
4186 struct page
**pages
;
4187 struct ceph_osd_data osd_data
;
4189 pages
= ceph_alloc_page_vector(calc_pages_for(0, data_len
),
4196 ceph_osd_data_pages_init(&osd_data
, pages
, data_len
, 0, false,
4198 ceph_osdc_msg_data_add(m
, &osd_data
);
4204 static struct ceph_msg
*alloc_msg(struct ceph_connection
*con
,
4205 struct ceph_msg_header
*hdr
,
4208 struct ceph_osd
*osd
= con
->private;
4209 int type
= le16_to_cpu(hdr
->type
);
4213 case CEPH_MSG_OSD_MAP
:
4214 case CEPH_MSG_WATCH_NOTIFY
:
4215 return alloc_msg_with_page_vector(hdr
);
4216 case CEPH_MSG_OSD_OPREPLY
:
4217 return get_reply(con
, hdr
, skip
);
4219 pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__
,
4227 * Wrappers to refcount containing ceph_osd struct
4229 static struct ceph_connection
*get_osd_con(struct ceph_connection
*con
)
4231 struct ceph_osd
*osd
= con
->private;
4237 static void put_osd_con(struct ceph_connection
*con
)
4239 struct ceph_osd
*osd
= con
->private;
4247 * Note: returned pointer is the address of a structure that's
4248 * managed separately. Caller must *not* attempt to free it.
4250 static struct ceph_auth_handshake
*get_authorizer(struct ceph_connection
*con
,
4251 int *proto
, int force_new
)
4253 struct ceph_osd
*o
= con
->private;
4254 struct ceph_osd_client
*osdc
= o
->o_osdc
;
4255 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
4256 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
4258 if (force_new
&& auth
->authorizer
) {
4259 ceph_auth_destroy_authorizer(auth
->authorizer
);
4260 auth
->authorizer
= NULL
;
4262 if (!auth
->authorizer
) {
4263 int ret
= ceph_auth_create_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
,
4266 return ERR_PTR(ret
);
4268 int ret
= ceph_auth_update_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
,
4271 return ERR_PTR(ret
);
4273 *proto
= ac
->protocol
;
4279 static int verify_authorizer_reply(struct ceph_connection
*con
, int len
)
4281 struct ceph_osd
*o
= con
->private;
4282 struct ceph_osd_client
*osdc
= o
->o_osdc
;
4283 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
4285 return ceph_auth_verify_authorizer_reply(ac
, o
->o_auth
.authorizer
, len
);
4288 static int invalidate_authorizer(struct ceph_connection
*con
)
4290 struct ceph_osd
*o
= con
->private;
4291 struct ceph_osd_client
*osdc
= o
->o_osdc
;
4292 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
4294 ceph_auth_invalidate_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
);
4295 return ceph_monc_validate_auth(&osdc
->client
->monc
);
4298 static int osd_sign_message(struct ceph_msg
*msg
)
4300 struct ceph_osd
*o
= msg
->con
->private;
4301 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
4303 return ceph_auth_sign_message(auth
, msg
);
4306 static int osd_check_message_signature(struct ceph_msg
*msg
)
4308 struct ceph_osd
*o
= msg
->con
->private;
4309 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
4311 return ceph_auth_check_message_signature(auth
, msg
);
4314 static const struct ceph_connection_operations osd_con_ops
= {
4317 .dispatch
= dispatch
,
4318 .get_authorizer
= get_authorizer
,
4319 .verify_authorizer_reply
= verify_authorizer_reply
,
4320 .invalidate_authorizer
= invalidate_authorizer
,
4321 .alloc_msg
= alloc_msg
,
4322 .sign_message
= osd_sign_message
,
4323 .check_message_signature
= osd_check_message_signature
,