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_OP_FRONT_LEN 4096
23 #define OSD_OPREPLY_FRONT_LEN 512
25 static struct kmem_cache
*ceph_osd_request_cache
;
27 static const struct ceph_connection_operations osd_con_ops
;
29 static void __send_queued(struct ceph_osd_client
*osdc
);
30 static int __reset_osd(struct ceph_osd_client
*osdc
, struct ceph_osd
*osd
);
31 static void __register_request(struct ceph_osd_client
*osdc
,
32 struct ceph_osd_request
*req
);
33 static void __unregister_linger_request(struct ceph_osd_client
*osdc
,
34 struct ceph_osd_request
*req
);
35 static void __send_request(struct ceph_osd_client
*osdc
,
36 struct ceph_osd_request
*req
);
39 * Implement client access to distributed object storage cluster.
41 * All data objects are stored within a cluster/cloud of OSDs, or
42 * "object storage devices." (Note that Ceph OSDs have _nothing_ to
43 * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply
44 * remote daemons serving up and coordinating consistent and safe
47 * Cluster membership and the mapping of data objects onto storage devices
48 * are described by the osd map.
50 * We keep track of pending OSD requests (read, write), resubmit
51 * requests to different OSDs when the cluster topology/data layout
52 * change, or retry the affected requests when the communications
53 * channel with an OSD is reset.
57 * calculate the mapping of a file extent onto an object, and fill out the
58 * request accordingly. shorten extent as necessary if it crosses an
61 * fill osd op in request message.
63 static int calc_layout(struct ceph_file_layout
*layout
, u64 off
, u64
*plen
,
64 u64
*objnum
, u64
*objoff
, u64
*objlen
)
70 r
= ceph_calc_file_object_mapping(layout
, off
, orig_len
, objnum
,
74 if (*objlen
< orig_len
) {
76 dout(" skipping last %llu, final file extent %llu~%llu\n",
77 orig_len
- *plen
, off
, *plen
);
80 dout("calc_layout objnum=%llx %llu~%llu\n", *objnum
, *objoff
, *objlen
);
85 static void ceph_osd_data_init(struct ceph_osd_data
*osd_data
)
87 memset(osd_data
, 0, sizeof (*osd_data
));
88 osd_data
->type
= CEPH_OSD_DATA_TYPE_NONE
;
91 static void ceph_osd_data_pages_init(struct ceph_osd_data
*osd_data
,
92 struct page
**pages
, u64 length
, u32 alignment
,
93 bool pages_from_pool
, bool own_pages
)
95 osd_data
->type
= CEPH_OSD_DATA_TYPE_PAGES
;
96 osd_data
->pages
= pages
;
97 osd_data
->length
= length
;
98 osd_data
->alignment
= alignment
;
99 osd_data
->pages_from_pool
= pages_from_pool
;
100 osd_data
->own_pages
= own_pages
;
103 static void ceph_osd_data_pagelist_init(struct ceph_osd_data
*osd_data
,
104 struct ceph_pagelist
*pagelist
)
106 osd_data
->type
= CEPH_OSD_DATA_TYPE_PAGELIST
;
107 osd_data
->pagelist
= pagelist
;
111 static void ceph_osd_data_bio_init(struct ceph_osd_data
*osd_data
,
112 struct bio
*bio
, size_t bio_length
)
114 osd_data
->type
= CEPH_OSD_DATA_TYPE_BIO
;
116 osd_data
->bio_length
= bio_length
;
118 #endif /* CONFIG_BLOCK */
120 #define osd_req_op_data(oreq, whch, typ, fld) \
122 BUG_ON(whch >= (oreq)->r_num_ops); \
123 &(oreq)->r_ops[whch].typ.fld; \
126 static struct ceph_osd_data
*
127 osd_req_op_raw_data_in(struct ceph_osd_request
*osd_req
, unsigned int which
)
129 BUG_ON(which
>= osd_req
->r_num_ops
);
131 return &osd_req
->r_ops
[which
].raw_data_in
;
134 struct ceph_osd_data
*
135 osd_req_op_extent_osd_data(struct ceph_osd_request
*osd_req
,
138 return osd_req_op_data(osd_req
, which
, extent
, osd_data
);
140 EXPORT_SYMBOL(osd_req_op_extent_osd_data
);
142 struct ceph_osd_data
*
143 osd_req_op_cls_response_data(struct ceph_osd_request
*osd_req
,
146 return osd_req_op_data(osd_req
, which
, cls
, response_data
);
148 EXPORT_SYMBOL(osd_req_op_cls_response_data
); /* ??? */
150 void osd_req_op_raw_data_in_pages(struct ceph_osd_request
*osd_req
,
151 unsigned int which
, struct page
**pages
,
152 u64 length
, u32 alignment
,
153 bool pages_from_pool
, bool own_pages
)
155 struct ceph_osd_data
*osd_data
;
157 osd_data
= osd_req_op_raw_data_in(osd_req
, which
);
158 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
159 pages_from_pool
, own_pages
);
161 EXPORT_SYMBOL(osd_req_op_raw_data_in_pages
);
163 void osd_req_op_extent_osd_data_pages(struct ceph_osd_request
*osd_req
,
164 unsigned int which
, struct page
**pages
,
165 u64 length
, u32 alignment
,
166 bool pages_from_pool
, bool own_pages
)
168 struct ceph_osd_data
*osd_data
;
170 osd_data
= osd_req_op_data(osd_req
, which
, extent
, osd_data
);
171 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
172 pages_from_pool
, own_pages
);
174 EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages
);
176 void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request
*osd_req
,
177 unsigned int which
, struct ceph_pagelist
*pagelist
)
179 struct ceph_osd_data
*osd_data
;
181 osd_data
= osd_req_op_data(osd_req
, which
, extent
, osd_data
);
182 ceph_osd_data_pagelist_init(osd_data
, pagelist
);
184 EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist
);
187 void osd_req_op_extent_osd_data_bio(struct ceph_osd_request
*osd_req
,
188 unsigned int which
, struct bio
*bio
, size_t bio_length
)
190 struct ceph_osd_data
*osd_data
;
192 osd_data
= osd_req_op_data(osd_req
, which
, extent
, osd_data
);
193 ceph_osd_data_bio_init(osd_data
, bio
, bio_length
);
195 EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio
);
196 #endif /* CONFIG_BLOCK */
198 static void osd_req_op_cls_request_info_pagelist(
199 struct ceph_osd_request
*osd_req
,
200 unsigned int which
, struct ceph_pagelist
*pagelist
)
202 struct ceph_osd_data
*osd_data
;
204 osd_data
= osd_req_op_data(osd_req
, which
, cls
, request_info
);
205 ceph_osd_data_pagelist_init(osd_data
, pagelist
);
208 void osd_req_op_cls_request_data_pagelist(
209 struct ceph_osd_request
*osd_req
,
210 unsigned int which
, struct ceph_pagelist
*pagelist
)
212 struct ceph_osd_data
*osd_data
;
214 osd_data
= osd_req_op_data(osd_req
, which
, cls
, request_data
);
215 ceph_osd_data_pagelist_init(osd_data
, pagelist
);
217 EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist
);
219 void osd_req_op_cls_request_data_pages(struct ceph_osd_request
*osd_req
,
220 unsigned int which
, struct page
**pages
, u64 length
,
221 u32 alignment
, bool pages_from_pool
, bool own_pages
)
223 struct ceph_osd_data
*osd_data
;
225 osd_data
= osd_req_op_data(osd_req
, which
, cls
, request_data
);
226 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
227 pages_from_pool
, own_pages
);
229 EXPORT_SYMBOL(osd_req_op_cls_request_data_pages
);
231 void osd_req_op_cls_response_data_pages(struct ceph_osd_request
*osd_req
,
232 unsigned int which
, struct page
**pages
, u64 length
,
233 u32 alignment
, bool pages_from_pool
, bool own_pages
)
235 struct ceph_osd_data
*osd_data
;
237 osd_data
= osd_req_op_data(osd_req
, which
, cls
, response_data
);
238 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
239 pages_from_pool
, own_pages
);
241 EXPORT_SYMBOL(osd_req_op_cls_response_data_pages
);
243 static u64
ceph_osd_data_length(struct ceph_osd_data
*osd_data
)
245 switch (osd_data
->type
) {
246 case CEPH_OSD_DATA_TYPE_NONE
:
248 case CEPH_OSD_DATA_TYPE_PAGES
:
249 return osd_data
->length
;
250 case CEPH_OSD_DATA_TYPE_PAGELIST
:
251 return (u64
)osd_data
->pagelist
->length
;
253 case CEPH_OSD_DATA_TYPE_BIO
:
254 return (u64
)osd_data
->bio_length
;
255 #endif /* CONFIG_BLOCK */
257 WARN(true, "unrecognized data type %d\n", (int)osd_data
->type
);
262 static void ceph_osd_data_release(struct ceph_osd_data
*osd_data
)
264 if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGES
&& osd_data
->own_pages
) {
267 num_pages
= calc_pages_for((u64
)osd_data
->alignment
,
268 (u64
)osd_data
->length
);
269 ceph_release_page_vector(osd_data
->pages
, num_pages
);
271 ceph_osd_data_init(osd_data
);
274 static void osd_req_op_data_release(struct ceph_osd_request
*osd_req
,
277 struct ceph_osd_req_op
*op
;
279 BUG_ON(which
>= osd_req
->r_num_ops
);
280 op
= &osd_req
->r_ops
[which
];
283 case CEPH_OSD_OP_READ
:
284 case CEPH_OSD_OP_WRITE
:
285 ceph_osd_data_release(&op
->extent
.osd_data
);
287 case CEPH_OSD_OP_CALL
:
288 ceph_osd_data_release(&op
->cls
.request_info
);
289 ceph_osd_data_release(&op
->cls
.request_data
);
290 ceph_osd_data_release(&op
->cls
.response_data
);
300 static void ceph_osdc_release_request(struct kref
*kref
)
302 struct ceph_osd_request
*req
= container_of(kref
,
303 struct ceph_osd_request
, r_kref
);
306 dout("%s %p (r_request %p r_reply %p)\n", __func__
, req
,
307 req
->r_request
, req
->r_reply
);
308 WARN_ON(!RB_EMPTY_NODE(&req
->r_node
));
309 WARN_ON(!list_empty(&req
->r_req_lru_item
));
310 WARN_ON(!list_empty(&req
->r_osd_item
));
311 WARN_ON(!list_empty(&req
->r_linger_item
));
312 WARN_ON(!list_empty(&req
->r_linger_osd_item
));
316 ceph_msg_put(req
->r_request
);
318 ceph_msg_revoke_incoming(req
->r_reply
);
319 ceph_msg_put(req
->r_reply
);
322 for (which
= 0; which
< req
->r_num_ops
; which
++)
323 osd_req_op_data_release(req
, which
);
325 ceph_put_snap_context(req
->r_snapc
);
327 mempool_free(req
, req
->r_osdc
->req_mempool
);
329 kmem_cache_free(ceph_osd_request_cache
, req
);
333 void ceph_osdc_get_request(struct ceph_osd_request
*req
)
335 dout("%s %p (was %d)\n", __func__
, req
,
336 atomic_read(&req
->r_kref
.refcount
));
337 kref_get(&req
->r_kref
);
339 EXPORT_SYMBOL(ceph_osdc_get_request
);
341 void ceph_osdc_put_request(struct ceph_osd_request
*req
)
343 dout("%s %p (was %d)\n", __func__
, req
,
344 atomic_read(&req
->r_kref
.refcount
));
345 kref_put(&req
->r_kref
, ceph_osdc_release_request
);
347 EXPORT_SYMBOL(ceph_osdc_put_request
);
349 struct ceph_osd_request
*ceph_osdc_alloc_request(struct ceph_osd_client
*osdc
,
350 struct ceph_snap_context
*snapc
,
351 unsigned int num_ops
,
355 struct ceph_osd_request
*req
;
356 struct ceph_msg
*msg
;
359 BUILD_BUG_ON(CEPH_OSD_MAX_OP
> U16_MAX
);
360 BUG_ON(num_ops
> CEPH_OSD_MAX_OP
);
362 msg_size
= 4 + 4 + 8 + 8 + 4+8;
363 msg_size
+= 2 + 4 + 8 + 4 + 4; /* oloc */
364 msg_size
+= 1 + 8 + 4 + 4; /* pg_t */
365 msg_size
+= 4 + CEPH_MAX_OID_NAME_LEN
; /* oid */
366 msg_size
+= 2 + num_ops
*sizeof(struct ceph_osd_op
);
367 msg_size
+= 8; /* snapid */
368 msg_size
+= 8; /* snap_seq */
369 msg_size
+= 8 * (snapc
? snapc
->num_snaps
: 0); /* snaps */
373 req
= mempool_alloc(osdc
->req_mempool
, gfp_flags
);
374 memset(req
, 0, sizeof(*req
));
376 req
= kmem_cache_zalloc(ceph_osd_request_cache
, gfp_flags
);
382 req
->r_mempool
= use_mempool
;
383 req
->r_num_ops
= num_ops
;
385 kref_init(&req
->r_kref
);
386 init_completion(&req
->r_completion
);
387 init_completion(&req
->r_safe_completion
);
388 RB_CLEAR_NODE(&req
->r_node
);
389 INIT_LIST_HEAD(&req
->r_unsafe_item
);
390 INIT_LIST_HEAD(&req
->r_linger_item
);
391 INIT_LIST_HEAD(&req
->r_linger_osd_item
);
392 INIT_LIST_HEAD(&req
->r_req_lru_item
);
393 INIT_LIST_HEAD(&req
->r_osd_item
);
395 req
->r_base_oloc
.pool
= -1;
396 req
->r_target_oloc
.pool
= -1;
398 /* create reply message */
400 msg
= ceph_msgpool_get(&osdc
->msgpool_op_reply
, 0);
402 msg
= ceph_msg_new(CEPH_MSG_OSD_OPREPLY
,
403 OSD_OPREPLY_FRONT_LEN
, gfp_flags
, true);
405 ceph_osdc_put_request(req
);
410 /* create request message; allow space for oid */
412 msg
= ceph_msgpool_get(&osdc
->msgpool_op
, 0);
414 msg
= ceph_msg_new(CEPH_MSG_OSD_OP
, msg_size
, gfp_flags
, true);
416 ceph_osdc_put_request(req
);
420 memset(msg
->front
.iov_base
, 0, msg
->front
.iov_len
);
422 req
->r_request
= msg
;
426 EXPORT_SYMBOL(ceph_osdc_alloc_request
);
428 static bool osd_req_opcode_valid(u16 opcode
)
431 case CEPH_OSD_OP_READ
:
432 case CEPH_OSD_OP_STAT
:
433 case CEPH_OSD_OP_MAPEXT
:
434 case CEPH_OSD_OP_MASKTRUNC
:
435 case CEPH_OSD_OP_SPARSE_READ
:
436 case CEPH_OSD_OP_NOTIFY
:
437 case CEPH_OSD_OP_NOTIFY_ACK
:
438 case CEPH_OSD_OP_ASSERT_VER
:
439 case CEPH_OSD_OP_WRITE
:
440 case CEPH_OSD_OP_WRITEFULL
:
441 case CEPH_OSD_OP_TRUNCATE
:
442 case CEPH_OSD_OP_ZERO
:
443 case CEPH_OSD_OP_DELETE
:
444 case CEPH_OSD_OP_APPEND
:
445 case CEPH_OSD_OP_STARTSYNC
:
446 case CEPH_OSD_OP_SETTRUNC
:
447 case CEPH_OSD_OP_TRIMTRUNC
:
448 case CEPH_OSD_OP_TMAPUP
:
449 case CEPH_OSD_OP_TMAPPUT
:
450 case CEPH_OSD_OP_TMAPGET
:
451 case CEPH_OSD_OP_CREATE
:
452 case CEPH_OSD_OP_ROLLBACK
:
453 case CEPH_OSD_OP_WATCH
:
454 case CEPH_OSD_OP_OMAPGETKEYS
:
455 case CEPH_OSD_OP_OMAPGETVALS
:
456 case CEPH_OSD_OP_OMAPGETHEADER
:
457 case CEPH_OSD_OP_OMAPGETVALSBYKEYS
:
458 case CEPH_OSD_OP_OMAPSETVALS
:
459 case CEPH_OSD_OP_OMAPSETHEADER
:
460 case CEPH_OSD_OP_OMAPCLEAR
:
461 case CEPH_OSD_OP_OMAPRMKEYS
:
462 case CEPH_OSD_OP_OMAP_CMP
:
463 case CEPH_OSD_OP_SETALLOCHINT
:
464 case CEPH_OSD_OP_CLONERANGE
:
465 case CEPH_OSD_OP_ASSERT_SRC_VERSION
:
466 case CEPH_OSD_OP_SRC_CMPXATTR
:
467 case CEPH_OSD_OP_GETXATTR
:
468 case CEPH_OSD_OP_GETXATTRS
:
469 case CEPH_OSD_OP_CMPXATTR
:
470 case CEPH_OSD_OP_SETXATTR
:
471 case CEPH_OSD_OP_SETXATTRS
:
472 case CEPH_OSD_OP_RESETXATTRS
:
473 case CEPH_OSD_OP_RMXATTR
:
474 case CEPH_OSD_OP_PULL
:
475 case CEPH_OSD_OP_PUSH
:
476 case CEPH_OSD_OP_BALANCEREADS
:
477 case CEPH_OSD_OP_UNBALANCEREADS
:
478 case CEPH_OSD_OP_SCRUB
:
479 case CEPH_OSD_OP_SCRUB_RESERVE
:
480 case CEPH_OSD_OP_SCRUB_UNRESERVE
:
481 case CEPH_OSD_OP_SCRUB_STOP
:
482 case CEPH_OSD_OP_SCRUB_MAP
:
483 case CEPH_OSD_OP_WRLOCK
:
484 case CEPH_OSD_OP_WRUNLOCK
:
485 case CEPH_OSD_OP_RDLOCK
:
486 case CEPH_OSD_OP_RDUNLOCK
:
487 case CEPH_OSD_OP_UPLOCK
:
488 case CEPH_OSD_OP_DNLOCK
:
489 case CEPH_OSD_OP_CALL
:
490 case CEPH_OSD_OP_PGLS
:
491 case CEPH_OSD_OP_PGLS_FILTER
:
499 * This is an osd op init function for opcodes that have no data or
500 * other information associated with them. It also serves as a
501 * common init routine for all the other init functions, below.
503 static struct ceph_osd_req_op
*
504 _osd_req_op_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
507 struct ceph_osd_req_op
*op
;
509 BUG_ON(which
>= osd_req
->r_num_ops
);
510 BUG_ON(!osd_req_opcode_valid(opcode
));
512 op
= &osd_req
->r_ops
[which
];
513 memset(op
, 0, sizeof (*op
));
519 void osd_req_op_init(struct ceph_osd_request
*osd_req
,
520 unsigned int which
, u16 opcode
)
522 (void)_osd_req_op_init(osd_req
, which
, opcode
);
524 EXPORT_SYMBOL(osd_req_op_init
);
526 void osd_req_op_extent_init(struct ceph_osd_request
*osd_req
,
527 unsigned int which
, u16 opcode
,
528 u64 offset
, u64 length
,
529 u64 truncate_size
, u32 truncate_seq
)
531 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
, opcode
);
532 size_t payload_len
= 0;
534 BUG_ON(opcode
!= CEPH_OSD_OP_READ
&& opcode
!= CEPH_OSD_OP_WRITE
&&
535 opcode
!= CEPH_OSD_OP_DELETE
&& opcode
!= CEPH_OSD_OP_ZERO
&&
536 opcode
!= CEPH_OSD_OP_TRUNCATE
);
538 op
->extent
.offset
= offset
;
539 op
->extent
.length
= length
;
540 op
->extent
.truncate_size
= truncate_size
;
541 op
->extent
.truncate_seq
= truncate_seq
;
542 if (opcode
== CEPH_OSD_OP_WRITE
)
543 payload_len
+= length
;
545 op
->payload_len
= payload_len
;
547 EXPORT_SYMBOL(osd_req_op_extent_init
);
549 void osd_req_op_extent_update(struct ceph_osd_request
*osd_req
,
550 unsigned int which
, u64 length
)
552 struct ceph_osd_req_op
*op
;
555 BUG_ON(which
>= osd_req
->r_num_ops
);
556 op
= &osd_req
->r_ops
[which
];
557 previous
= op
->extent
.length
;
559 if (length
== previous
)
560 return; /* Nothing to do */
561 BUG_ON(length
> previous
);
563 op
->extent
.length
= length
;
564 op
->payload_len
-= previous
- length
;
566 EXPORT_SYMBOL(osd_req_op_extent_update
);
568 void osd_req_op_cls_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
569 u16 opcode
, const char *class, const char *method
)
571 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
, opcode
);
572 struct ceph_pagelist
*pagelist
;
573 size_t payload_len
= 0;
576 BUG_ON(opcode
!= CEPH_OSD_OP_CALL
);
578 pagelist
= kmalloc(sizeof (*pagelist
), GFP_NOFS
);
580 ceph_pagelist_init(pagelist
);
582 op
->cls
.class_name
= class;
583 size
= strlen(class);
584 BUG_ON(size
> (size_t) U8_MAX
);
585 op
->cls
.class_len
= size
;
586 ceph_pagelist_append(pagelist
, class, size
);
589 op
->cls
.method_name
= method
;
590 size
= strlen(method
);
591 BUG_ON(size
> (size_t) U8_MAX
);
592 op
->cls
.method_len
= size
;
593 ceph_pagelist_append(pagelist
, method
, size
);
596 osd_req_op_cls_request_info_pagelist(osd_req
, which
, pagelist
);
598 op
->cls
.argc
= 0; /* currently unused */
600 op
->payload_len
= payload_len
;
602 EXPORT_SYMBOL(osd_req_op_cls_init
);
604 void osd_req_op_watch_init(struct ceph_osd_request
*osd_req
,
605 unsigned int which
, u16 opcode
,
606 u64 cookie
, u64 version
, int flag
)
608 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
, opcode
);
610 BUG_ON(opcode
!= CEPH_OSD_OP_NOTIFY_ACK
&& opcode
!= CEPH_OSD_OP_WATCH
);
612 op
->watch
.cookie
= cookie
;
613 op
->watch
.ver
= version
;
614 if (opcode
== CEPH_OSD_OP_WATCH
&& flag
)
615 op
->watch
.flag
= (u8
)1;
617 EXPORT_SYMBOL(osd_req_op_watch_init
);
619 void osd_req_op_alloc_hint_init(struct ceph_osd_request
*osd_req
,
621 u64 expected_object_size
,
622 u64 expected_write_size
)
624 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
,
625 CEPH_OSD_OP_SETALLOCHINT
);
627 op
->alloc_hint
.expected_object_size
= expected_object_size
;
628 op
->alloc_hint
.expected_write_size
= expected_write_size
;
631 * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed
632 * not worth a feature bit. Set FAILOK per-op flag to make
633 * sure older osds don't trip over an unsupported opcode.
635 op
->flags
|= CEPH_OSD_OP_FLAG_FAILOK
;
637 EXPORT_SYMBOL(osd_req_op_alloc_hint_init
);
639 static void ceph_osdc_msg_data_add(struct ceph_msg
*msg
,
640 struct ceph_osd_data
*osd_data
)
642 u64 length
= ceph_osd_data_length(osd_data
);
644 if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGES
) {
645 BUG_ON(length
> (u64
) SIZE_MAX
);
647 ceph_msg_data_add_pages(msg
, osd_data
->pages
,
648 length
, osd_data
->alignment
);
649 } else if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGELIST
) {
651 ceph_msg_data_add_pagelist(msg
, osd_data
->pagelist
);
653 } else if (osd_data
->type
== CEPH_OSD_DATA_TYPE_BIO
) {
654 ceph_msg_data_add_bio(msg
, osd_data
->bio
, length
);
657 BUG_ON(osd_data
->type
!= CEPH_OSD_DATA_TYPE_NONE
);
661 static u64
osd_req_encode_op(struct ceph_osd_request
*req
,
662 struct ceph_osd_op
*dst
, unsigned int which
)
664 struct ceph_osd_req_op
*src
;
665 struct ceph_osd_data
*osd_data
;
666 u64 request_data_len
= 0;
669 BUG_ON(which
>= req
->r_num_ops
);
670 src
= &req
->r_ops
[which
];
671 if (WARN_ON(!osd_req_opcode_valid(src
->op
))) {
672 pr_err("unrecognized osd opcode %d\n", src
->op
);
678 case CEPH_OSD_OP_STAT
:
679 osd_data
= &src
->raw_data_in
;
680 ceph_osdc_msg_data_add(req
->r_reply
, osd_data
);
682 case CEPH_OSD_OP_READ
:
683 case CEPH_OSD_OP_WRITE
:
684 case CEPH_OSD_OP_ZERO
:
685 case CEPH_OSD_OP_DELETE
:
686 case CEPH_OSD_OP_TRUNCATE
:
687 if (src
->op
== CEPH_OSD_OP_WRITE
)
688 request_data_len
= src
->extent
.length
;
689 dst
->extent
.offset
= cpu_to_le64(src
->extent
.offset
);
690 dst
->extent
.length
= cpu_to_le64(src
->extent
.length
);
691 dst
->extent
.truncate_size
=
692 cpu_to_le64(src
->extent
.truncate_size
);
693 dst
->extent
.truncate_seq
=
694 cpu_to_le32(src
->extent
.truncate_seq
);
695 osd_data
= &src
->extent
.osd_data
;
696 if (src
->op
== CEPH_OSD_OP_WRITE
)
697 ceph_osdc_msg_data_add(req
->r_request
, osd_data
);
699 ceph_osdc_msg_data_add(req
->r_reply
, osd_data
);
701 case CEPH_OSD_OP_CALL
:
702 dst
->cls
.class_len
= src
->cls
.class_len
;
703 dst
->cls
.method_len
= src
->cls
.method_len
;
704 osd_data
= &src
->cls
.request_info
;
705 ceph_osdc_msg_data_add(req
->r_request
, osd_data
);
706 BUG_ON(osd_data
->type
!= CEPH_OSD_DATA_TYPE_PAGELIST
);
707 request_data_len
= osd_data
->pagelist
->length
;
709 osd_data
= &src
->cls
.request_data
;
710 data_length
= ceph_osd_data_length(osd_data
);
712 BUG_ON(osd_data
->type
== CEPH_OSD_DATA_TYPE_NONE
);
713 dst
->cls
.indata_len
= cpu_to_le32(data_length
);
714 ceph_osdc_msg_data_add(req
->r_request
, osd_data
);
715 src
->payload_len
+= data_length
;
716 request_data_len
+= data_length
;
718 osd_data
= &src
->cls
.response_data
;
719 ceph_osdc_msg_data_add(req
->r_reply
, osd_data
);
721 case CEPH_OSD_OP_STARTSYNC
:
723 case CEPH_OSD_OP_NOTIFY_ACK
:
724 case CEPH_OSD_OP_WATCH
:
725 dst
->watch
.cookie
= cpu_to_le64(src
->watch
.cookie
);
726 dst
->watch
.ver
= cpu_to_le64(src
->watch
.ver
);
727 dst
->watch
.flag
= src
->watch
.flag
;
729 case CEPH_OSD_OP_SETALLOCHINT
:
730 dst
->alloc_hint
.expected_object_size
=
731 cpu_to_le64(src
->alloc_hint
.expected_object_size
);
732 dst
->alloc_hint
.expected_write_size
=
733 cpu_to_le64(src
->alloc_hint
.expected_write_size
);
736 pr_err("unsupported osd opcode %s\n",
737 ceph_osd_op_name(src
->op
));
743 dst
->op
= cpu_to_le16(src
->op
);
744 dst
->flags
= cpu_to_le32(src
->flags
);
745 dst
->payload_len
= cpu_to_le32(src
->payload_len
);
747 return request_data_len
;
751 * build new request AND message, calculate layout, and adjust file
754 * if the file was recently truncated, we include information about its
755 * old and new size so that the object can be updated appropriately. (we
756 * avoid synchronously deleting truncated objects because it's slow.)
758 * if @do_sync, include a 'startsync' command so that the osd will flush
761 struct ceph_osd_request
*ceph_osdc_new_request(struct ceph_osd_client
*osdc
,
762 struct ceph_file_layout
*layout
,
763 struct ceph_vino vino
,
764 u64 off
, u64
*plen
, int num_ops
,
765 int opcode
, int flags
,
766 struct ceph_snap_context
*snapc
,
771 struct ceph_osd_request
*req
;
779 BUG_ON(opcode
!= CEPH_OSD_OP_READ
&& opcode
!= CEPH_OSD_OP_WRITE
&&
780 opcode
!= CEPH_OSD_OP_DELETE
&& opcode
!= CEPH_OSD_OP_ZERO
&&
781 opcode
!= CEPH_OSD_OP_TRUNCATE
);
783 req
= ceph_osdc_alloc_request(osdc
, snapc
, num_ops
, use_mempool
,
786 return ERR_PTR(-ENOMEM
);
788 req
->r_flags
= flags
;
790 /* calculate max write size */
791 r
= calc_layout(layout
, off
, plen
, &objnum
, &objoff
, &objlen
);
793 ceph_osdc_put_request(req
);
797 object_size
= le32_to_cpu(layout
->fl_object_size
);
798 object_base
= off
- objoff
;
799 if (!(truncate_seq
== 1 && truncate_size
== -1ULL)) {
800 if (truncate_size
<= object_base
) {
803 truncate_size
-= object_base
;
804 if (truncate_size
> object_size
)
805 truncate_size
= object_size
;
809 osd_req_op_extent_init(req
, 0, opcode
, objoff
, objlen
,
810 truncate_size
, truncate_seq
);
813 * A second op in the ops array means the caller wants to
814 * also issue a include a 'startsync' command so that the
815 * osd will flush data quickly.
818 osd_req_op_init(req
, 1, CEPH_OSD_OP_STARTSYNC
);
820 req
->r_base_oloc
.pool
= ceph_file_layout_pg_pool(*layout
);
822 snprintf(req
->r_base_oid
.name
, sizeof(req
->r_base_oid
.name
),
823 "%llx.%08llx", vino
.ino
, objnum
);
824 req
->r_base_oid
.name_len
= strlen(req
->r_base_oid
.name
);
828 EXPORT_SYMBOL(ceph_osdc_new_request
);
831 * We keep osd requests in an rbtree, sorted by ->r_tid.
833 static void __insert_request(struct ceph_osd_client
*osdc
,
834 struct ceph_osd_request
*new)
836 struct rb_node
**p
= &osdc
->requests
.rb_node
;
837 struct rb_node
*parent
= NULL
;
838 struct ceph_osd_request
*req
= NULL
;
842 req
= rb_entry(parent
, struct ceph_osd_request
, r_node
);
843 if (new->r_tid
< req
->r_tid
)
845 else if (new->r_tid
> req
->r_tid
)
851 rb_link_node(&new->r_node
, parent
, p
);
852 rb_insert_color(&new->r_node
, &osdc
->requests
);
855 static struct ceph_osd_request
*__lookup_request(struct ceph_osd_client
*osdc
,
858 struct ceph_osd_request
*req
;
859 struct rb_node
*n
= osdc
->requests
.rb_node
;
862 req
= rb_entry(n
, struct ceph_osd_request
, r_node
);
863 if (tid
< req
->r_tid
)
865 else if (tid
> req
->r_tid
)
873 static struct ceph_osd_request
*
874 __lookup_request_ge(struct ceph_osd_client
*osdc
,
877 struct ceph_osd_request
*req
;
878 struct rb_node
*n
= osdc
->requests
.rb_node
;
881 req
= rb_entry(n
, struct ceph_osd_request
, r_node
);
882 if (tid
< req
->r_tid
) {
886 } else if (tid
> req
->r_tid
) {
896 * Resubmit requests pending on the given osd.
898 static void __kick_osd_requests(struct ceph_osd_client
*osdc
,
899 struct ceph_osd
*osd
)
901 struct ceph_osd_request
*req
, *nreq
;
905 dout("__kick_osd_requests osd%d\n", osd
->o_osd
);
906 err
= __reset_osd(osdc
, osd
);
910 * Build up a list of requests to resend by traversing the
911 * osd's list of requests. Requests for a given object are
912 * sent in tid order, and that is also the order they're
913 * kept on this list. Therefore all requests that are in
914 * flight will be found first, followed by all requests that
915 * have not yet been sent. And to resend requests while
916 * preserving this order we will want to put any sent
917 * requests back on the front of the osd client's unsent
920 * So we build a separate ordered list of already-sent
921 * requests for the affected osd and splice it onto the
922 * front of the osd client's unsent list. Once we've seen a
923 * request that has not yet been sent we're done. Those
924 * requests are already sitting right where they belong.
926 list_for_each_entry(req
, &osd
->o_requests
, r_osd_item
) {
929 list_move_tail(&req
->r_req_lru_item
, &resend
);
930 dout("requeueing %p tid %llu osd%d\n", req
, req
->r_tid
,
933 req
->r_flags
|= CEPH_OSD_FLAG_RETRY
;
935 list_splice(&resend
, &osdc
->req_unsent
);
938 * Linger requests are re-registered before sending, which
939 * sets up a new tid for each. We add them to the unsent
940 * list at the end to keep things in tid order.
942 list_for_each_entry_safe(req
, nreq
, &osd
->o_linger_requests
,
945 * reregister request prior to unregistering linger so
946 * that r_osd is preserved.
948 BUG_ON(!list_empty(&req
->r_req_lru_item
));
949 __register_request(osdc
, req
);
950 list_add_tail(&req
->r_req_lru_item
, &osdc
->req_unsent
);
951 list_add_tail(&req
->r_osd_item
, &req
->r_osd
->o_requests
);
952 __unregister_linger_request(osdc
, req
);
953 dout("requeued lingering %p tid %llu osd%d\n", req
, req
->r_tid
,
959 * If the osd connection drops, we need to resubmit all requests.
961 static void osd_reset(struct ceph_connection
*con
)
963 struct ceph_osd
*osd
= con
->private;
964 struct ceph_osd_client
*osdc
;
968 dout("osd_reset osd%d\n", osd
->o_osd
);
970 down_read(&osdc
->map_sem
);
971 mutex_lock(&osdc
->request_mutex
);
972 __kick_osd_requests(osdc
, osd
);
974 mutex_unlock(&osdc
->request_mutex
);
975 up_read(&osdc
->map_sem
);
979 * Track open sessions with osds.
981 static struct ceph_osd
*create_osd(struct ceph_osd_client
*osdc
, int onum
)
983 struct ceph_osd
*osd
;
985 osd
= kzalloc(sizeof(*osd
), GFP_NOFS
);
989 atomic_set(&osd
->o_ref
, 1);
992 RB_CLEAR_NODE(&osd
->o_node
);
993 INIT_LIST_HEAD(&osd
->o_requests
);
994 INIT_LIST_HEAD(&osd
->o_linger_requests
);
995 INIT_LIST_HEAD(&osd
->o_osd_lru
);
996 osd
->o_incarnation
= 1;
998 ceph_con_init(&osd
->o_con
, osd
, &osd_con_ops
, &osdc
->client
->msgr
);
1000 INIT_LIST_HEAD(&osd
->o_keepalive_item
);
1004 static struct ceph_osd
*get_osd(struct ceph_osd
*osd
)
1006 if (atomic_inc_not_zero(&osd
->o_ref
)) {
1007 dout("get_osd %p %d -> %d\n", osd
, atomic_read(&osd
->o_ref
)-1,
1008 atomic_read(&osd
->o_ref
));
1011 dout("get_osd %p FAIL\n", osd
);
1016 static void put_osd(struct ceph_osd
*osd
)
1018 dout("put_osd %p %d -> %d\n", osd
, atomic_read(&osd
->o_ref
),
1019 atomic_read(&osd
->o_ref
) - 1);
1020 if (atomic_dec_and_test(&osd
->o_ref
) && osd
->o_auth
.authorizer
) {
1021 struct ceph_auth_client
*ac
= osd
->o_osdc
->client
->monc
.auth
;
1023 ceph_auth_destroy_authorizer(ac
, osd
->o_auth
.authorizer
);
1029 * remove an osd from our map
1031 static void __remove_osd(struct ceph_osd_client
*osdc
, struct ceph_osd
*osd
)
1033 dout("__remove_osd %p\n", osd
);
1034 BUG_ON(!list_empty(&osd
->o_requests
));
1035 BUG_ON(!list_empty(&osd
->o_linger_requests
));
1037 rb_erase(&osd
->o_node
, &osdc
->osds
);
1038 list_del_init(&osd
->o_osd_lru
);
1039 ceph_con_close(&osd
->o_con
);
1043 static void remove_all_osds(struct ceph_osd_client
*osdc
)
1045 dout("%s %p\n", __func__
, osdc
);
1046 mutex_lock(&osdc
->request_mutex
);
1047 while (!RB_EMPTY_ROOT(&osdc
->osds
)) {
1048 struct ceph_osd
*osd
= rb_entry(rb_first(&osdc
->osds
),
1049 struct ceph_osd
, o_node
);
1050 __remove_osd(osdc
, osd
);
1052 mutex_unlock(&osdc
->request_mutex
);
1055 static void __move_osd_to_lru(struct ceph_osd_client
*osdc
,
1056 struct ceph_osd
*osd
)
1058 dout("%s %p\n", __func__
, osd
);
1059 BUG_ON(!list_empty(&osd
->o_osd_lru
));
1061 list_add_tail(&osd
->o_osd_lru
, &osdc
->osd_lru
);
1062 osd
->lru_ttl
= jiffies
+ osdc
->client
->options
->osd_idle_ttl
* HZ
;
1065 static void maybe_move_osd_to_lru(struct ceph_osd_client
*osdc
,
1066 struct ceph_osd
*osd
)
1068 dout("%s %p\n", __func__
, osd
);
1070 if (list_empty(&osd
->o_requests
) &&
1071 list_empty(&osd
->o_linger_requests
))
1072 __move_osd_to_lru(osdc
, osd
);
1075 static void __remove_osd_from_lru(struct ceph_osd
*osd
)
1077 dout("__remove_osd_from_lru %p\n", osd
);
1078 if (!list_empty(&osd
->o_osd_lru
))
1079 list_del_init(&osd
->o_osd_lru
);
1082 static void remove_old_osds(struct ceph_osd_client
*osdc
)
1084 struct ceph_osd
*osd
, *nosd
;
1086 dout("__remove_old_osds %p\n", osdc
);
1087 mutex_lock(&osdc
->request_mutex
);
1088 list_for_each_entry_safe(osd
, nosd
, &osdc
->osd_lru
, o_osd_lru
) {
1089 if (time_before(jiffies
, osd
->lru_ttl
))
1091 __remove_osd(osdc
, osd
);
1093 mutex_unlock(&osdc
->request_mutex
);
1099 static int __reset_osd(struct ceph_osd_client
*osdc
, struct ceph_osd
*osd
)
1101 struct ceph_entity_addr
*peer_addr
;
1103 dout("__reset_osd %p osd%d\n", osd
, osd
->o_osd
);
1104 if (list_empty(&osd
->o_requests
) &&
1105 list_empty(&osd
->o_linger_requests
)) {
1106 __remove_osd(osdc
, osd
);
1111 peer_addr
= &osdc
->osdmap
->osd_addr
[osd
->o_osd
];
1112 if (!memcmp(peer_addr
, &osd
->o_con
.peer_addr
, sizeof (*peer_addr
)) &&
1113 !ceph_con_opened(&osd
->o_con
)) {
1114 struct ceph_osd_request
*req
;
1116 dout("osd addr hasn't changed and connection never opened, "
1117 "letting msgr retry\n");
1118 /* touch each r_stamp for handle_timeout()'s benfit */
1119 list_for_each_entry(req
, &osd
->o_requests
, r_osd_item
)
1120 req
->r_stamp
= jiffies
;
1125 ceph_con_close(&osd
->o_con
);
1126 ceph_con_open(&osd
->o_con
, CEPH_ENTITY_TYPE_OSD
, osd
->o_osd
, peer_addr
);
1127 osd
->o_incarnation
++;
1132 static void __insert_osd(struct ceph_osd_client
*osdc
, struct ceph_osd
*new)
1134 struct rb_node
**p
= &osdc
->osds
.rb_node
;
1135 struct rb_node
*parent
= NULL
;
1136 struct ceph_osd
*osd
= NULL
;
1138 dout("__insert_osd %p osd%d\n", new, new->o_osd
);
1141 osd
= rb_entry(parent
, struct ceph_osd
, o_node
);
1142 if (new->o_osd
< osd
->o_osd
)
1144 else if (new->o_osd
> osd
->o_osd
)
1145 p
= &(*p
)->rb_right
;
1150 rb_link_node(&new->o_node
, parent
, p
);
1151 rb_insert_color(&new->o_node
, &osdc
->osds
);
1154 static struct ceph_osd
*__lookup_osd(struct ceph_osd_client
*osdc
, int o
)
1156 struct ceph_osd
*osd
;
1157 struct rb_node
*n
= osdc
->osds
.rb_node
;
1160 osd
= rb_entry(n
, struct ceph_osd
, o_node
);
1163 else if (o
> osd
->o_osd
)
1171 static void __schedule_osd_timeout(struct ceph_osd_client
*osdc
)
1173 schedule_delayed_work(&osdc
->timeout_work
,
1174 osdc
->client
->options
->osd_keepalive_timeout
* HZ
);
1177 static void __cancel_osd_timeout(struct ceph_osd_client
*osdc
)
1179 cancel_delayed_work(&osdc
->timeout_work
);
1183 * Register request, assign tid. If this is the first request, set up
1184 * the timeout event.
1186 static void __register_request(struct ceph_osd_client
*osdc
,
1187 struct ceph_osd_request
*req
)
1189 req
->r_tid
= ++osdc
->last_tid
;
1190 req
->r_request
->hdr
.tid
= cpu_to_le64(req
->r_tid
);
1191 dout("__register_request %p tid %lld\n", req
, req
->r_tid
);
1192 __insert_request(osdc
, req
);
1193 ceph_osdc_get_request(req
);
1194 osdc
->num_requests
++;
1195 if (osdc
->num_requests
== 1) {
1196 dout(" first request, scheduling timeout\n");
1197 __schedule_osd_timeout(osdc
);
1202 * called under osdc->request_mutex
1204 static void __unregister_request(struct ceph_osd_client
*osdc
,
1205 struct ceph_osd_request
*req
)
1207 if (RB_EMPTY_NODE(&req
->r_node
)) {
1208 dout("__unregister_request %p tid %lld not registered\n",
1213 dout("__unregister_request %p tid %lld\n", req
, req
->r_tid
);
1214 rb_erase(&req
->r_node
, &osdc
->requests
);
1215 RB_CLEAR_NODE(&req
->r_node
);
1216 osdc
->num_requests
--;
1219 /* make sure the original request isn't in flight. */
1220 ceph_msg_revoke(req
->r_request
);
1222 list_del_init(&req
->r_osd_item
);
1223 maybe_move_osd_to_lru(osdc
, req
->r_osd
);
1224 if (list_empty(&req
->r_linger_osd_item
))
1228 list_del_init(&req
->r_req_lru_item
);
1229 ceph_osdc_put_request(req
);
1231 if (osdc
->num_requests
== 0) {
1232 dout(" no requests, canceling timeout\n");
1233 __cancel_osd_timeout(osdc
);
1238 * Cancel a previously queued request message
1240 static void __cancel_request(struct ceph_osd_request
*req
)
1242 if (req
->r_sent
&& req
->r_osd
) {
1243 ceph_msg_revoke(req
->r_request
);
1248 static void __register_linger_request(struct ceph_osd_client
*osdc
,
1249 struct ceph_osd_request
*req
)
1251 dout("%s %p tid %llu\n", __func__
, req
, req
->r_tid
);
1252 WARN_ON(!req
->r_linger
);
1254 ceph_osdc_get_request(req
);
1255 list_add_tail(&req
->r_linger_item
, &osdc
->req_linger
);
1257 list_add_tail(&req
->r_linger_osd_item
,
1258 &req
->r_osd
->o_linger_requests
);
1261 static void __unregister_linger_request(struct ceph_osd_client
*osdc
,
1262 struct ceph_osd_request
*req
)
1264 WARN_ON(!req
->r_linger
);
1266 if (list_empty(&req
->r_linger_item
)) {
1267 dout("%s %p tid %llu not registered\n", __func__
, req
,
1272 dout("%s %p tid %llu\n", __func__
, req
, req
->r_tid
);
1273 list_del_init(&req
->r_linger_item
);
1276 list_del_init(&req
->r_linger_osd_item
);
1277 maybe_move_osd_to_lru(osdc
, req
->r_osd
);
1278 if (list_empty(&req
->r_osd_item
))
1281 ceph_osdc_put_request(req
);
1284 void ceph_osdc_set_request_linger(struct ceph_osd_client
*osdc
,
1285 struct ceph_osd_request
*req
)
1287 if (!req
->r_linger
) {
1288 dout("set_request_linger %p\n", req
);
1292 EXPORT_SYMBOL(ceph_osdc_set_request_linger
);
1295 * Returns whether a request should be blocked from being sent
1296 * based on the current osdmap and osd_client settings.
1298 * Caller should hold map_sem for read.
1300 static bool __req_should_be_paused(struct ceph_osd_client
*osdc
,
1301 struct ceph_osd_request
*req
)
1303 bool pauserd
= ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSERD
);
1304 bool pausewr
= ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSEWR
) ||
1305 ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_FULL
);
1306 return (req
->r_flags
& CEPH_OSD_FLAG_READ
&& pauserd
) ||
1307 (req
->r_flags
& CEPH_OSD_FLAG_WRITE
&& pausewr
);
1311 * Calculate mapping of a request to a PG. Takes tiering into account.
1313 static int __calc_request_pg(struct ceph_osdmap
*osdmap
,
1314 struct ceph_osd_request
*req
,
1315 struct ceph_pg
*pg_out
)
1317 bool need_check_tiering
;
1319 need_check_tiering
= false;
1320 if (req
->r_target_oloc
.pool
== -1) {
1321 req
->r_target_oloc
= req
->r_base_oloc
; /* struct */
1322 need_check_tiering
= true;
1324 if (req
->r_target_oid
.name_len
== 0) {
1325 ceph_oid_copy(&req
->r_target_oid
, &req
->r_base_oid
);
1326 need_check_tiering
= true;
1329 if (need_check_tiering
&&
1330 (req
->r_flags
& CEPH_OSD_FLAG_IGNORE_OVERLAY
) == 0) {
1331 struct ceph_pg_pool_info
*pi
;
1333 pi
= ceph_pg_pool_by_id(osdmap
, req
->r_target_oloc
.pool
);
1335 if ((req
->r_flags
& CEPH_OSD_FLAG_READ
) &&
1337 req
->r_target_oloc
.pool
= pi
->read_tier
;
1338 if ((req
->r_flags
& CEPH_OSD_FLAG_WRITE
) &&
1339 pi
->write_tier
>= 0)
1340 req
->r_target_oloc
.pool
= pi
->write_tier
;
1342 /* !pi is caught in ceph_oloc_oid_to_pg() */
1345 return ceph_oloc_oid_to_pg(osdmap
, &req
->r_target_oloc
,
1346 &req
->r_target_oid
, pg_out
);
1350 * Pick an osd (the first 'up' osd in the pg), allocate the osd struct
1351 * (as needed), and set the request r_osd appropriately. If there is
1352 * no up osd, set r_osd to NULL. Move the request to the appropriate list
1353 * (unsent, homeless) or leave on in-flight lru.
1355 * Return 0 if unchanged, 1 if changed, or negative on error.
1357 * Caller should hold map_sem for read and request_mutex.
1359 static int __map_request(struct ceph_osd_client
*osdc
,
1360 struct ceph_osd_request
*req
, int force_resend
)
1362 struct ceph_pg pgid
;
1363 int acting
[CEPH_PG_MAX_SIZE
];
1368 dout("map_request %p tid %lld\n", req
, req
->r_tid
);
1370 err
= __calc_request_pg(osdc
->osdmap
, req
, &pgid
);
1372 list_move(&req
->r_req_lru_item
, &osdc
->req_notarget
);
1377 num
= ceph_calc_pg_acting(osdc
->osdmap
, pgid
, acting
, &o
);
1381 was_paused
= req
->r_paused
;
1382 req
->r_paused
= __req_should_be_paused(osdc
, req
);
1383 if (was_paused
&& !req
->r_paused
)
1386 if ((!force_resend
&&
1387 req
->r_osd
&& req
->r_osd
->o_osd
== o
&&
1388 req
->r_sent
>= req
->r_osd
->o_incarnation
&&
1389 req
->r_num_pg_osds
== num
&&
1390 memcmp(req
->r_pg_osds
, acting
, sizeof(acting
[0])*num
) == 0) ||
1391 (req
->r_osd
== NULL
&& o
== -1) ||
1393 return 0; /* no change */
1395 dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n",
1396 req
->r_tid
, pgid
.pool
, pgid
.seed
, o
,
1397 req
->r_osd
? req
->r_osd
->o_osd
: -1);
1399 /* record full pg acting set */
1400 memcpy(req
->r_pg_osds
, acting
, sizeof(acting
[0]) * num
);
1401 req
->r_num_pg_osds
= num
;
1404 __cancel_request(req
);
1405 list_del_init(&req
->r_osd_item
);
1409 req
->r_osd
= __lookup_osd(osdc
, o
);
1410 if (!req
->r_osd
&& o
>= 0) {
1412 req
->r_osd
= create_osd(osdc
, o
);
1414 list_move(&req
->r_req_lru_item
, &osdc
->req_notarget
);
1418 dout("map_request osd %p is osd%d\n", req
->r_osd
, o
);
1419 __insert_osd(osdc
, req
->r_osd
);
1421 ceph_con_open(&req
->r_osd
->o_con
,
1422 CEPH_ENTITY_TYPE_OSD
, o
,
1423 &osdc
->osdmap
->osd_addr
[o
]);
1427 __remove_osd_from_lru(req
->r_osd
);
1428 list_add_tail(&req
->r_osd_item
, &req
->r_osd
->o_requests
);
1429 list_move_tail(&req
->r_req_lru_item
, &osdc
->req_unsent
);
1431 list_move_tail(&req
->r_req_lru_item
, &osdc
->req_notarget
);
1433 err
= 1; /* osd or pg changed */
1440 * caller should hold map_sem (for read) and request_mutex
1442 static void __send_request(struct ceph_osd_client
*osdc
,
1443 struct ceph_osd_request
*req
)
1447 dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n",
1448 req
, req
->r_tid
, req
->r_osd
->o_osd
, req
->r_flags
,
1449 (unsigned long long)req
->r_pgid
.pool
, req
->r_pgid
.seed
);
1451 /* fill in message content that changes each time we send it */
1452 put_unaligned_le32(osdc
->osdmap
->epoch
, req
->r_request_osdmap_epoch
);
1453 put_unaligned_le32(req
->r_flags
, req
->r_request_flags
);
1454 put_unaligned_le64(req
->r_target_oloc
.pool
, req
->r_request_pool
);
1455 p
= req
->r_request_pgid
;
1456 ceph_encode_64(&p
, req
->r_pgid
.pool
);
1457 ceph_encode_32(&p
, req
->r_pgid
.seed
);
1458 put_unaligned_le64(1, req
->r_request_attempts
); /* FIXME */
1459 memcpy(req
->r_request_reassert_version
, &req
->r_reassert_version
,
1460 sizeof(req
->r_reassert_version
));
1462 req
->r_stamp
= jiffies
;
1463 list_move_tail(&req
->r_req_lru_item
, &osdc
->req_lru
);
1465 ceph_msg_get(req
->r_request
); /* send consumes a ref */
1467 req
->r_sent
= req
->r_osd
->o_incarnation
;
1469 ceph_con_send(&req
->r_osd
->o_con
, req
->r_request
);
1473 * Send any requests in the queue (req_unsent).
1475 static void __send_queued(struct ceph_osd_client
*osdc
)
1477 struct ceph_osd_request
*req
, *tmp
;
1479 dout("__send_queued\n");
1480 list_for_each_entry_safe(req
, tmp
, &osdc
->req_unsent
, r_req_lru_item
)
1481 __send_request(osdc
, req
);
1485 * Caller should hold map_sem for read and request_mutex.
1487 static int __ceph_osdc_start_request(struct ceph_osd_client
*osdc
,
1488 struct ceph_osd_request
*req
,
1493 __register_request(osdc
, req
);
1495 req
->r_got_reply
= 0;
1496 rc
= __map_request(osdc
, req
, 0);
1499 dout("osdc_start_request failed map, "
1500 " will retry %lld\n", req
->r_tid
);
1503 __unregister_request(osdc
, req
);
1508 if (req
->r_osd
== NULL
) {
1509 dout("send_request %p no up osds in pg\n", req
);
1510 ceph_monc_request_next_osdmap(&osdc
->client
->monc
);
1512 __send_queued(osdc
);
1519 * Timeout callback, called every N seconds when 1 or more osd
1520 * requests has been active for more than N seconds. When this
1521 * happens, we ping all OSDs with requests who have timed out to
1522 * ensure any communications channel reset is detected. Reset the
1523 * request timeouts another N seconds in the future as we go.
1524 * Reschedule the timeout event another N seconds in future (unless
1525 * there are no open requests).
1527 static void handle_timeout(struct work_struct
*work
)
1529 struct ceph_osd_client
*osdc
=
1530 container_of(work
, struct ceph_osd_client
, timeout_work
.work
);
1531 struct ceph_osd_request
*req
;
1532 struct ceph_osd
*osd
;
1533 unsigned long keepalive
=
1534 osdc
->client
->options
->osd_keepalive_timeout
* HZ
;
1535 struct list_head slow_osds
;
1537 down_read(&osdc
->map_sem
);
1539 ceph_monc_request_next_osdmap(&osdc
->client
->monc
);
1541 mutex_lock(&osdc
->request_mutex
);
1544 * ping osds that are a bit slow. this ensures that if there
1545 * is a break in the TCP connection we will notice, and reopen
1546 * a connection with that osd (from the fault callback).
1548 INIT_LIST_HEAD(&slow_osds
);
1549 list_for_each_entry(req
, &osdc
->req_lru
, r_req_lru_item
) {
1550 if (time_before(jiffies
, req
->r_stamp
+ keepalive
))
1555 dout(" tid %llu is slow, will send keepalive on osd%d\n",
1556 req
->r_tid
, osd
->o_osd
);
1557 list_move_tail(&osd
->o_keepalive_item
, &slow_osds
);
1559 while (!list_empty(&slow_osds
)) {
1560 osd
= list_entry(slow_osds
.next
, struct ceph_osd
,
1562 list_del_init(&osd
->o_keepalive_item
);
1563 ceph_con_keepalive(&osd
->o_con
);
1566 __schedule_osd_timeout(osdc
);
1567 __send_queued(osdc
);
1568 mutex_unlock(&osdc
->request_mutex
);
1569 up_read(&osdc
->map_sem
);
1572 static void handle_osds_timeout(struct work_struct
*work
)
1574 struct ceph_osd_client
*osdc
=
1575 container_of(work
, struct ceph_osd_client
,
1576 osds_timeout_work
.work
);
1577 unsigned long delay
=
1578 osdc
->client
->options
->osd_idle_ttl
* HZ
>> 2;
1580 dout("osds timeout\n");
1581 down_read(&osdc
->map_sem
);
1582 remove_old_osds(osdc
);
1583 up_read(&osdc
->map_sem
);
1585 schedule_delayed_work(&osdc
->osds_timeout_work
,
1586 round_jiffies_relative(delay
));
1589 static int ceph_oloc_decode(void **p
, void *end
,
1590 struct ceph_object_locator
*oloc
)
1592 u8 struct_v
, struct_cv
;
1597 ceph_decode_need(p
, end
, 1 + 1 + 4, e_inval
);
1598 struct_v
= ceph_decode_8(p
);
1599 struct_cv
= ceph_decode_8(p
);
1601 pr_warn("got v %d < 3 cv %d of ceph_object_locator\n",
1602 struct_v
, struct_cv
);
1605 if (struct_cv
> 6) {
1606 pr_warn("got v %d cv %d > 6 of ceph_object_locator\n",
1607 struct_v
, struct_cv
);
1610 len
= ceph_decode_32(p
);
1611 ceph_decode_need(p
, end
, len
, e_inval
);
1612 struct_end
= *p
+ len
;
1614 oloc
->pool
= ceph_decode_64(p
);
1615 *p
+= 4; /* skip preferred */
1617 len
= ceph_decode_32(p
);
1619 pr_warn("ceph_object_locator::key is set\n");
1623 if (struct_v
>= 5) {
1624 len
= ceph_decode_32(p
);
1626 pr_warn("ceph_object_locator::nspace is set\n");
1631 if (struct_v
>= 6) {
1632 s64 hash
= ceph_decode_64(p
);
1634 pr_warn("ceph_object_locator::hash is set\n");
1649 static int ceph_redirect_decode(void **p
, void *end
,
1650 struct ceph_request_redirect
*redir
)
1652 u8 struct_v
, struct_cv
;
1657 ceph_decode_need(p
, end
, 1 + 1 + 4, e_inval
);
1658 struct_v
= ceph_decode_8(p
);
1659 struct_cv
= ceph_decode_8(p
);
1660 if (struct_cv
> 1) {
1661 pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n",
1662 struct_v
, struct_cv
);
1665 len
= ceph_decode_32(p
);
1666 ceph_decode_need(p
, end
, len
, e_inval
);
1667 struct_end
= *p
+ len
;
1669 ret
= ceph_oloc_decode(p
, end
, &redir
->oloc
);
1673 len
= ceph_decode_32(p
);
1675 pr_warn("ceph_request_redirect::object_name is set\n");
1679 len
= ceph_decode_32(p
);
1680 *p
+= len
; /* skip osd_instructions */
1692 static void complete_request(struct ceph_osd_request
*req
)
1694 complete_all(&req
->r_safe_completion
); /* fsync waiter */
1698 * handle osd op reply. either call the callback if it is specified,
1699 * or do the completion to wake up the waiting thread.
1701 static void handle_reply(struct ceph_osd_client
*osdc
, struct ceph_msg
*msg
,
1702 struct ceph_connection
*con
)
1705 struct ceph_osd_request
*req
;
1706 struct ceph_request_redirect redir
;
1709 unsigned int numops
;
1710 int payload_len
, flags
;
1716 u64 reassert_version
;
1718 int already_completed
;
1722 tid
= le64_to_cpu(msg
->hdr
.tid
);
1723 dout("handle_reply %p tid %llu\n", msg
, tid
);
1725 p
= msg
->front
.iov_base
;
1726 end
= p
+ msg
->front
.iov_len
;
1728 ceph_decode_need(&p
, end
, 4, bad
);
1729 object_len
= ceph_decode_32(&p
);
1730 ceph_decode_need(&p
, end
, object_len
, bad
);
1733 err
= ceph_decode_pgid(&p
, end
, &pg
);
1737 ceph_decode_need(&p
, end
, 8 + 4 + 4 + 8 + 4, bad
);
1738 flags
= ceph_decode_64(&p
);
1739 result
= ceph_decode_32(&p
);
1740 reassert_epoch
= ceph_decode_32(&p
);
1741 reassert_version
= ceph_decode_64(&p
);
1742 osdmap_epoch
= ceph_decode_32(&p
);
1745 down_read(&osdc
->map_sem
);
1746 mutex_lock(&osdc
->request_mutex
);
1747 req
= __lookup_request(osdc
, tid
);
1749 dout("handle_reply tid %llu dne\n", tid
);
1752 ceph_osdc_get_request(req
);
1754 dout("handle_reply %p tid %llu req %p result %d\n", msg
, tid
,
1757 ceph_decode_need(&p
, end
, 4, bad_put
);
1758 numops
= ceph_decode_32(&p
);
1759 if (numops
> CEPH_OSD_MAX_OP
)
1761 if (numops
!= req
->r_num_ops
)
1764 ceph_decode_need(&p
, end
, numops
* sizeof(struct ceph_osd_op
), bad_put
);
1765 for (i
= 0; i
< numops
; i
++) {
1766 struct ceph_osd_op
*op
= p
;
1769 len
= le32_to_cpu(op
->payload_len
);
1770 req
->r_reply_op_len
[i
] = len
;
1771 dout(" op %d has %d bytes\n", i
, len
);
1775 bytes
= le32_to_cpu(msg
->hdr
.data_len
);
1776 if (payload_len
!= bytes
) {
1777 pr_warning("sum of op payload lens %d != data_len %d",
1778 payload_len
, bytes
);
1782 ceph_decode_need(&p
, end
, 4 + numops
* 4, bad_put
);
1783 retry_attempt
= ceph_decode_32(&p
);
1784 for (i
= 0; i
< numops
; i
++)
1785 req
->r_reply_op_result
[i
] = ceph_decode_32(&p
);
1787 if (le16_to_cpu(msg
->hdr
.version
) >= 6) {
1788 p
+= 8 + 4; /* skip replay_version */
1789 p
+= 8; /* skip user_version */
1791 err
= ceph_redirect_decode(&p
, end
, &redir
);
1795 redir
.oloc
.pool
= -1;
1798 if (redir
.oloc
.pool
!= -1) {
1799 dout("redirect pool %lld\n", redir
.oloc
.pool
);
1801 __unregister_request(osdc
, req
);
1803 req
->r_target_oloc
= redir
.oloc
; /* struct */
1806 * Start redirect requests with nofail=true. If
1807 * mapping fails, request will end up on the notarget
1808 * list, waiting for the new osdmap (which can take
1809 * a while), even though the original request mapped
1810 * successfully. In the future we might want to follow
1811 * original request's nofail setting here.
1813 err
= __ceph_osdc_start_request(osdc
, req
, true);
1819 already_completed
= req
->r_got_reply
;
1820 if (!req
->r_got_reply
) {
1821 req
->r_result
= result
;
1822 dout("handle_reply result %d bytes %d\n", req
->r_result
,
1824 if (req
->r_result
== 0)
1825 req
->r_result
= bytes
;
1827 /* in case this is a write and we need to replay, */
1828 req
->r_reassert_version
.epoch
= cpu_to_le32(reassert_epoch
);
1829 req
->r_reassert_version
.version
= cpu_to_le64(reassert_version
);
1831 req
->r_got_reply
= 1;
1832 } else if ((flags
& CEPH_OSD_FLAG_ONDISK
) == 0) {
1833 dout("handle_reply tid %llu dup ack\n", tid
);
1837 dout("handle_reply tid %llu flags %d\n", tid
, flags
);
1839 if (req
->r_linger
&& (flags
& CEPH_OSD_FLAG_ONDISK
))
1840 __register_linger_request(osdc
, req
);
1842 /* either this is a read, or we got the safe response */
1844 (flags
& CEPH_OSD_FLAG_ONDISK
) ||
1845 ((flags
& CEPH_OSD_FLAG_WRITE
) == 0))
1846 __unregister_request(osdc
, req
);
1848 mutex_unlock(&osdc
->request_mutex
);
1849 up_read(&osdc
->map_sem
);
1851 if (!already_completed
) {
1852 if (req
->r_unsafe_callback
&&
1853 result
>= 0 && !(flags
& CEPH_OSD_FLAG_ONDISK
))
1854 req
->r_unsafe_callback(req
, true);
1855 if (req
->r_callback
)
1856 req
->r_callback(req
, msg
);
1858 complete_all(&req
->r_completion
);
1861 if (flags
& CEPH_OSD_FLAG_ONDISK
) {
1862 if (req
->r_unsafe_callback
&& already_completed
)
1863 req
->r_unsafe_callback(req
, false);
1864 complete_request(req
);
1868 dout("req=%p req->r_linger=%d\n", req
, req
->r_linger
);
1869 ceph_osdc_put_request(req
);
1872 mutex_unlock(&osdc
->request_mutex
);
1873 up_read(&osdc
->map_sem
);
1877 req
->r_result
= -EIO
;
1878 __unregister_request(osdc
, req
);
1879 if (req
->r_callback
)
1880 req
->r_callback(req
, msg
);
1882 complete_all(&req
->r_completion
);
1883 complete_request(req
);
1884 ceph_osdc_put_request(req
);
1886 mutex_unlock(&osdc
->request_mutex
);
1887 up_read(&osdc
->map_sem
);
1889 pr_err("corrupt osd_op_reply got %d %d\n",
1890 (int)msg
->front
.iov_len
, le32_to_cpu(msg
->hdr
.front_len
));
1894 static void reset_changed_osds(struct ceph_osd_client
*osdc
)
1896 struct rb_node
*p
, *n
;
1898 for (p
= rb_first(&osdc
->osds
); p
; p
= n
) {
1899 struct ceph_osd
*osd
= rb_entry(p
, struct ceph_osd
, o_node
);
1902 if (!ceph_osd_is_up(osdc
->osdmap
, osd
->o_osd
) ||
1903 memcmp(&osd
->o_con
.peer_addr
,
1904 ceph_osd_addr(osdc
->osdmap
,
1906 sizeof(struct ceph_entity_addr
)) != 0)
1907 __reset_osd(osdc
, osd
);
1912 * Requeue requests whose mapping to an OSD has changed. If requests map to
1913 * no osd, request a new map.
1915 * Caller should hold map_sem for read.
1917 static void kick_requests(struct ceph_osd_client
*osdc
, bool force_resend
,
1918 bool force_resend_writes
)
1920 struct ceph_osd_request
*req
, *nreq
;
1924 bool force_resend_req
;
1926 dout("kick_requests %s %s\n", force_resend
? " (force resend)" : "",
1927 force_resend_writes
? " (force resend writes)" : "");
1928 mutex_lock(&osdc
->request_mutex
);
1929 for (p
= rb_first(&osdc
->requests
); p
; ) {
1930 req
= rb_entry(p
, struct ceph_osd_request
, r_node
);
1934 * For linger requests that have not yet been
1935 * registered, move them to the linger list; they'll
1936 * be sent to the osd in the loop below. Unregister
1937 * the request before re-registering it as a linger
1938 * request to ensure the __map_request() below
1939 * will decide it needs to be sent.
1941 if (req
->r_linger
&& list_empty(&req
->r_linger_item
)) {
1942 dout("%p tid %llu restart on osd%d\n",
1944 req
->r_osd
? req
->r_osd
->o_osd
: -1);
1945 ceph_osdc_get_request(req
);
1946 __unregister_request(osdc
, req
);
1947 __register_linger_request(osdc
, req
);
1948 ceph_osdc_put_request(req
);
1952 force_resend_req
= force_resend
||
1953 (force_resend_writes
&&
1954 req
->r_flags
& CEPH_OSD_FLAG_WRITE
);
1955 err
= __map_request(osdc
, req
, force_resend_req
);
1957 continue; /* error */
1958 if (req
->r_osd
== NULL
) {
1959 dout("%p tid %llu maps to no osd\n", req
, req
->r_tid
);
1960 needmap
++; /* request a newer map */
1961 } else if (err
> 0) {
1962 if (!req
->r_linger
) {
1963 dout("%p tid %llu requeued on osd%d\n", req
,
1965 req
->r_osd
? req
->r_osd
->o_osd
: -1);
1966 req
->r_flags
|= CEPH_OSD_FLAG_RETRY
;
1971 list_for_each_entry_safe(req
, nreq
, &osdc
->req_linger
,
1973 dout("linger req=%p req->r_osd=%p\n", req
, req
->r_osd
);
1975 err
= __map_request(osdc
, req
,
1976 force_resend
|| force_resend_writes
);
1977 dout("__map_request returned %d\n", err
);
1979 continue; /* no change and no osd was specified */
1981 continue; /* hrm! */
1982 if (req
->r_osd
== NULL
) {
1983 dout("tid %llu maps to no valid osd\n", req
->r_tid
);
1984 needmap
++; /* request a newer map */
1988 dout("kicking lingering %p tid %llu osd%d\n", req
, req
->r_tid
,
1989 req
->r_osd
? req
->r_osd
->o_osd
: -1);
1990 __register_request(osdc
, req
);
1991 __unregister_linger_request(osdc
, req
);
1993 reset_changed_osds(osdc
);
1994 mutex_unlock(&osdc
->request_mutex
);
1997 dout("%d requests for down osds, need new map\n", needmap
);
1998 ceph_monc_request_next_osdmap(&osdc
->client
->monc
);
2004 * Process updated osd map.
2006 * The message contains any number of incremental and full maps, normally
2007 * indicating some sort of topology change in the cluster. Kick requests
2008 * off to different OSDs as needed.
2010 void ceph_osdc_handle_map(struct ceph_osd_client
*osdc
, struct ceph_msg
*msg
)
2012 void *p
, *end
, *next
;
2013 u32 nr_maps
, maplen
;
2015 struct ceph_osdmap
*newmap
= NULL
, *oldmap
;
2017 struct ceph_fsid fsid
;
2020 dout("handle_map have %u\n", osdc
->osdmap
? osdc
->osdmap
->epoch
: 0);
2021 p
= msg
->front
.iov_base
;
2022 end
= p
+ msg
->front
.iov_len
;
2025 ceph_decode_need(&p
, end
, sizeof(fsid
), bad
);
2026 ceph_decode_copy(&p
, &fsid
, sizeof(fsid
));
2027 if (ceph_check_fsid(osdc
->client
, &fsid
) < 0)
2030 down_write(&osdc
->map_sem
);
2032 was_full
= ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_FULL
);
2034 /* incremental maps */
2035 ceph_decode_32_safe(&p
, end
, nr_maps
, bad
);
2036 dout(" %d inc maps\n", nr_maps
);
2037 while (nr_maps
> 0) {
2038 ceph_decode_need(&p
, end
, 2*sizeof(u32
), bad
);
2039 epoch
= ceph_decode_32(&p
);
2040 maplen
= ceph_decode_32(&p
);
2041 ceph_decode_need(&p
, end
, maplen
, bad
);
2043 if (osdc
->osdmap
&& osdc
->osdmap
->epoch
+1 == epoch
) {
2044 dout("applying incremental map %u len %d\n",
2046 newmap
= osdmap_apply_incremental(&p
, next
,
2048 &osdc
->client
->msgr
);
2049 if (IS_ERR(newmap
)) {
2050 err
= PTR_ERR(newmap
);
2054 if (newmap
!= osdc
->osdmap
) {
2055 ceph_osdmap_destroy(osdc
->osdmap
);
2056 osdc
->osdmap
= newmap
;
2058 was_full
= was_full
||
2059 ceph_osdmap_flag(osdc
->osdmap
,
2061 kick_requests(osdc
, 0, was_full
);
2063 dout("ignoring incremental map %u len %d\n",
2073 ceph_decode_32_safe(&p
, end
, nr_maps
, bad
);
2074 dout(" %d full maps\n", nr_maps
);
2076 ceph_decode_need(&p
, end
, 2*sizeof(u32
), bad
);
2077 epoch
= ceph_decode_32(&p
);
2078 maplen
= ceph_decode_32(&p
);
2079 ceph_decode_need(&p
, end
, maplen
, bad
);
2081 dout("skipping non-latest full map %u len %d\n",
2083 } else if (osdc
->osdmap
&& osdc
->osdmap
->epoch
>= epoch
) {
2084 dout("skipping full map %u len %d, "
2085 "older than our %u\n", epoch
, maplen
,
2086 osdc
->osdmap
->epoch
);
2088 int skipped_map
= 0;
2090 dout("taking full map %u len %d\n", epoch
, maplen
);
2091 newmap
= ceph_osdmap_decode(&p
, p
+maplen
);
2092 if (IS_ERR(newmap
)) {
2093 err
= PTR_ERR(newmap
);
2097 oldmap
= osdc
->osdmap
;
2098 osdc
->osdmap
= newmap
;
2100 if (oldmap
->epoch
+ 1 < newmap
->epoch
)
2102 ceph_osdmap_destroy(oldmap
);
2104 was_full
= was_full
||
2105 ceph_osdmap_flag(osdc
->osdmap
,
2107 kick_requests(osdc
, skipped_map
, was_full
);
2116 downgrade_write(&osdc
->map_sem
);
2117 ceph_monc_got_osdmap(&osdc
->client
->monc
, osdc
->osdmap
->epoch
);
2120 * subscribe to subsequent osdmap updates if full to ensure
2121 * we find out when we are no longer full and stop returning
2124 if (ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_FULL
) ||
2125 ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSERD
) ||
2126 ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSEWR
))
2127 ceph_monc_request_next_osdmap(&osdc
->client
->monc
);
2129 mutex_lock(&osdc
->request_mutex
);
2130 __send_queued(osdc
);
2131 mutex_unlock(&osdc
->request_mutex
);
2132 up_read(&osdc
->map_sem
);
2133 wake_up_all(&osdc
->client
->auth_wq
);
2137 pr_err("osdc handle_map corrupt msg\n");
2139 up_write(&osdc
->map_sem
);
2143 * watch/notify callback event infrastructure
2145 * These callbacks are used both for watch and notify operations.
2147 static void __release_event(struct kref
*kref
)
2149 struct ceph_osd_event
*event
=
2150 container_of(kref
, struct ceph_osd_event
, kref
);
2152 dout("__release_event %p\n", event
);
2156 static void get_event(struct ceph_osd_event
*event
)
2158 kref_get(&event
->kref
);
2161 void ceph_osdc_put_event(struct ceph_osd_event
*event
)
2163 kref_put(&event
->kref
, __release_event
);
2165 EXPORT_SYMBOL(ceph_osdc_put_event
);
2167 static void __insert_event(struct ceph_osd_client
*osdc
,
2168 struct ceph_osd_event
*new)
2170 struct rb_node
**p
= &osdc
->event_tree
.rb_node
;
2171 struct rb_node
*parent
= NULL
;
2172 struct ceph_osd_event
*event
= NULL
;
2176 event
= rb_entry(parent
, struct ceph_osd_event
, node
);
2177 if (new->cookie
< event
->cookie
)
2179 else if (new->cookie
> event
->cookie
)
2180 p
= &(*p
)->rb_right
;
2185 rb_link_node(&new->node
, parent
, p
);
2186 rb_insert_color(&new->node
, &osdc
->event_tree
);
2189 static struct ceph_osd_event
*__find_event(struct ceph_osd_client
*osdc
,
2192 struct rb_node
**p
= &osdc
->event_tree
.rb_node
;
2193 struct rb_node
*parent
= NULL
;
2194 struct ceph_osd_event
*event
= NULL
;
2198 event
= rb_entry(parent
, struct ceph_osd_event
, node
);
2199 if (cookie
< event
->cookie
)
2201 else if (cookie
> event
->cookie
)
2202 p
= &(*p
)->rb_right
;
2209 static void __remove_event(struct ceph_osd_event
*event
)
2211 struct ceph_osd_client
*osdc
= event
->osdc
;
2213 if (!RB_EMPTY_NODE(&event
->node
)) {
2214 dout("__remove_event removed %p\n", event
);
2215 rb_erase(&event
->node
, &osdc
->event_tree
);
2216 ceph_osdc_put_event(event
);
2218 dout("__remove_event didn't remove %p\n", event
);
2222 int ceph_osdc_create_event(struct ceph_osd_client
*osdc
,
2223 void (*event_cb
)(u64
, u64
, u8
, void *),
2224 void *data
, struct ceph_osd_event
**pevent
)
2226 struct ceph_osd_event
*event
;
2228 event
= kmalloc(sizeof(*event
), GFP_NOIO
);
2232 dout("create_event %p\n", event
);
2233 event
->cb
= event_cb
;
2234 event
->one_shot
= 0;
2237 INIT_LIST_HEAD(&event
->osd_node
);
2238 RB_CLEAR_NODE(&event
->node
);
2239 kref_init(&event
->kref
); /* one ref for us */
2240 kref_get(&event
->kref
); /* one ref for the caller */
2242 spin_lock(&osdc
->event_lock
);
2243 event
->cookie
= ++osdc
->event_count
;
2244 __insert_event(osdc
, event
);
2245 spin_unlock(&osdc
->event_lock
);
2250 EXPORT_SYMBOL(ceph_osdc_create_event
);
2252 void ceph_osdc_cancel_event(struct ceph_osd_event
*event
)
2254 struct ceph_osd_client
*osdc
= event
->osdc
;
2256 dout("cancel_event %p\n", event
);
2257 spin_lock(&osdc
->event_lock
);
2258 __remove_event(event
);
2259 spin_unlock(&osdc
->event_lock
);
2260 ceph_osdc_put_event(event
); /* caller's */
2262 EXPORT_SYMBOL(ceph_osdc_cancel_event
);
2265 static void do_event_work(struct work_struct
*work
)
2267 struct ceph_osd_event_work
*event_work
=
2268 container_of(work
, struct ceph_osd_event_work
, work
);
2269 struct ceph_osd_event
*event
= event_work
->event
;
2270 u64 ver
= event_work
->ver
;
2271 u64 notify_id
= event_work
->notify_id
;
2272 u8 opcode
= event_work
->opcode
;
2274 dout("do_event_work completing %p\n", event
);
2275 event
->cb(ver
, notify_id
, opcode
, event
->data
);
2276 dout("do_event_work completed %p\n", event
);
2277 ceph_osdc_put_event(event
);
2283 * Process osd watch notifications
2285 static void handle_watch_notify(struct ceph_osd_client
*osdc
,
2286 struct ceph_msg
*msg
)
2290 u64 cookie
, ver
, notify_id
;
2292 struct ceph_osd_event
*event
;
2293 struct ceph_osd_event_work
*event_work
;
2295 p
= msg
->front
.iov_base
;
2296 end
= p
+ msg
->front
.iov_len
;
2298 ceph_decode_8_safe(&p
, end
, proto_ver
, bad
);
2299 ceph_decode_8_safe(&p
, end
, opcode
, bad
);
2300 ceph_decode_64_safe(&p
, end
, cookie
, bad
);
2301 ceph_decode_64_safe(&p
, end
, ver
, bad
);
2302 ceph_decode_64_safe(&p
, end
, notify_id
, bad
);
2304 spin_lock(&osdc
->event_lock
);
2305 event
= __find_event(osdc
, cookie
);
2307 BUG_ON(event
->one_shot
);
2310 spin_unlock(&osdc
->event_lock
);
2311 dout("handle_watch_notify cookie %lld ver %lld event %p\n",
2312 cookie
, ver
, event
);
2314 event_work
= kmalloc(sizeof(*event_work
), GFP_NOIO
);
2316 dout("ERROR: could not allocate event_work\n");
2319 INIT_WORK(&event_work
->work
, do_event_work
);
2320 event_work
->event
= event
;
2321 event_work
->ver
= ver
;
2322 event_work
->notify_id
= notify_id
;
2323 event_work
->opcode
= opcode
;
2324 if (!queue_work(osdc
->notify_wq
, &event_work
->work
)) {
2325 dout("WARNING: failed to queue notify event work\n");
2333 ceph_osdc_put_event(event
);
2337 pr_err("osdc handle_watch_notify corrupt msg\n");
2341 * build new request AND message
2344 void ceph_osdc_build_request(struct ceph_osd_request
*req
, u64 off
,
2345 struct ceph_snap_context
*snapc
, u64 snap_id
,
2346 struct timespec
*mtime
)
2348 struct ceph_msg
*msg
= req
->r_request
;
2351 int flags
= req
->r_flags
;
2355 req
->r_snapid
= snap_id
;
2356 req
->r_snapc
= ceph_get_snap_context(snapc
);
2358 /* encode request */
2359 msg
->hdr
.version
= cpu_to_le16(4);
2361 p
= msg
->front
.iov_base
;
2362 ceph_encode_32(&p
, 1); /* client_inc is always 1 */
2363 req
->r_request_osdmap_epoch
= p
;
2365 req
->r_request_flags
= p
;
2367 if (req
->r_flags
& CEPH_OSD_FLAG_WRITE
)
2368 ceph_encode_timespec(p
, mtime
);
2369 p
+= sizeof(struct ceph_timespec
);
2370 req
->r_request_reassert_version
= p
;
2371 p
+= sizeof(struct ceph_eversion
); /* will get filled in */
2374 ceph_encode_8(&p
, 4);
2375 ceph_encode_8(&p
, 4);
2376 ceph_encode_32(&p
, 8 + 4 + 4);
2377 req
->r_request_pool
= p
;
2379 ceph_encode_32(&p
, -1); /* preferred */
2380 ceph_encode_32(&p
, 0); /* key len */
2382 ceph_encode_8(&p
, 1);
2383 req
->r_request_pgid
= p
;
2385 ceph_encode_32(&p
, -1); /* preferred */
2388 ceph_encode_32(&p
, req
->r_base_oid
.name_len
);
2389 memcpy(p
, req
->r_base_oid
.name
, req
->r_base_oid
.name_len
);
2390 dout("oid '%.*s' len %d\n", req
->r_base_oid
.name_len
,
2391 req
->r_base_oid
.name
, req
->r_base_oid
.name_len
);
2392 p
+= req
->r_base_oid
.name_len
;
2394 /* ops--can imply data */
2395 ceph_encode_16(&p
, (u16
)req
->r_num_ops
);
2397 for (i
= 0; i
< req
->r_num_ops
; i
++) {
2398 data_len
+= osd_req_encode_op(req
, p
, i
);
2399 p
+= sizeof(struct ceph_osd_op
);
2403 ceph_encode_64(&p
, req
->r_snapid
);
2404 ceph_encode_64(&p
, req
->r_snapc
? req
->r_snapc
->seq
: 0);
2405 ceph_encode_32(&p
, req
->r_snapc
? req
->r_snapc
->num_snaps
: 0);
2407 for (i
= 0; i
< snapc
->num_snaps
; i
++) {
2408 ceph_encode_64(&p
, req
->r_snapc
->snaps
[i
]);
2412 req
->r_request_attempts
= p
;
2416 if (flags
& CEPH_OSD_FLAG_WRITE
) {
2420 * The header "data_off" is a hint to the receiver
2421 * allowing it to align received data into its
2422 * buffers such that there's no need to re-copy
2423 * it before writing it to disk (direct I/O).
2425 data_off
= (u16
) (off
& 0xffff);
2426 req
->r_request
->hdr
.data_off
= cpu_to_le16(data_off
);
2428 req
->r_request
->hdr
.data_len
= cpu_to_le32(data_len
);
2430 BUG_ON(p
> msg
->front
.iov_base
+ msg
->front
.iov_len
);
2431 msg_size
= p
- msg
->front
.iov_base
;
2432 msg
->front
.iov_len
= msg_size
;
2433 msg
->hdr
.front_len
= cpu_to_le32(msg_size
);
2435 dout("build_request msg_size was %d\n", (int)msg_size
);
2437 EXPORT_SYMBOL(ceph_osdc_build_request
);
2440 * Register request, send initial attempt.
2442 int ceph_osdc_start_request(struct ceph_osd_client
*osdc
,
2443 struct ceph_osd_request
*req
,
2448 down_read(&osdc
->map_sem
);
2449 mutex_lock(&osdc
->request_mutex
);
2451 rc
= __ceph_osdc_start_request(osdc
, req
, nofail
);
2453 mutex_unlock(&osdc
->request_mutex
);
2454 up_read(&osdc
->map_sem
);
2458 EXPORT_SYMBOL(ceph_osdc_start_request
);
2461 * Unregister a registered request. The request is not completed (i.e.
2462 * no callbacks or wakeups) - higher layers are supposed to know what
2463 * they are canceling.
2465 void ceph_osdc_cancel_request(struct ceph_osd_request
*req
)
2467 struct ceph_osd_client
*osdc
= req
->r_osdc
;
2469 mutex_lock(&osdc
->request_mutex
);
2471 __unregister_linger_request(osdc
, req
);
2472 __unregister_request(osdc
, req
);
2473 mutex_unlock(&osdc
->request_mutex
);
2475 dout("%s %p tid %llu canceled\n", __func__
, req
, req
->r_tid
);
2477 EXPORT_SYMBOL(ceph_osdc_cancel_request
);
2480 * wait for a request to complete
2482 int ceph_osdc_wait_request(struct ceph_osd_client
*osdc
,
2483 struct ceph_osd_request
*req
)
2487 dout("%s %p tid %llu\n", __func__
, req
, req
->r_tid
);
2489 rc
= wait_for_completion_interruptible(&req
->r_completion
);
2491 dout("%s %p tid %llu interrupted\n", __func__
, req
, req
->r_tid
);
2492 ceph_osdc_cancel_request(req
);
2493 complete_request(req
);
2497 dout("%s %p tid %llu result %d\n", __func__
, req
, req
->r_tid
,
2499 return req
->r_result
;
2501 EXPORT_SYMBOL(ceph_osdc_wait_request
);
2504 * sync - wait for all in-flight requests to flush. avoid starvation.
2506 void ceph_osdc_sync(struct ceph_osd_client
*osdc
)
2508 struct ceph_osd_request
*req
;
2509 u64 last_tid
, next_tid
= 0;
2511 mutex_lock(&osdc
->request_mutex
);
2512 last_tid
= osdc
->last_tid
;
2514 req
= __lookup_request_ge(osdc
, next_tid
);
2517 if (req
->r_tid
> last_tid
)
2520 next_tid
= req
->r_tid
+ 1;
2521 if ((req
->r_flags
& CEPH_OSD_FLAG_WRITE
) == 0)
2524 ceph_osdc_get_request(req
);
2525 mutex_unlock(&osdc
->request_mutex
);
2526 dout("sync waiting on tid %llu (last is %llu)\n",
2527 req
->r_tid
, last_tid
);
2528 wait_for_completion(&req
->r_safe_completion
);
2529 mutex_lock(&osdc
->request_mutex
);
2530 ceph_osdc_put_request(req
);
2532 mutex_unlock(&osdc
->request_mutex
);
2533 dout("sync done (thru tid %llu)\n", last_tid
);
2535 EXPORT_SYMBOL(ceph_osdc_sync
);
2538 * Call all pending notify callbacks - for use after a watch is
2539 * unregistered, to make sure no more callbacks for it will be invoked
2541 void ceph_osdc_flush_notifies(struct ceph_osd_client
*osdc
)
2543 flush_workqueue(osdc
->notify_wq
);
2545 EXPORT_SYMBOL(ceph_osdc_flush_notifies
);
2551 int ceph_osdc_init(struct ceph_osd_client
*osdc
, struct ceph_client
*client
)
2556 osdc
->client
= client
;
2557 osdc
->osdmap
= NULL
;
2558 init_rwsem(&osdc
->map_sem
);
2559 init_completion(&osdc
->map_waiters
);
2560 osdc
->last_requested_map
= 0;
2561 mutex_init(&osdc
->request_mutex
);
2563 osdc
->osds
= RB_ROOT
;
2564 INIT_LIST_HEAD(&osdc
->osd_lru
);
2565 osdc
->requests
= RB_ROOT
;
2566 INIT_LIST_HEAD(&osdc
->req_lru
);
2567 INIT_LIST_HEAD(&osdc
->req_unsent
);
2568 INIT_LIST_HEAD(&osdc
->req_notarget
);
2569 INIT_LIST_HEAD(&osdc
->req_linger
);
2570 osdc
->num_requests
= 0;
2571 INIT_DELAYED_WORK(&osdc
->timeout_work
, handle_timeout
);
2572 INIT_DELAYED_WORK(&osdc
->osds_timeout_work
, handle_osds_timeout
);
2573 spin_lock_init(&osdc
->event_lock
);
2574 osdc
->event_tree
= RB_ROOT
;
2575 osdc
->event_count
= 0;
2577 schedule_delayed_work(&osdc
->osds_timeout_work
,
2578 round_jiffies_relative(osdc
->client
->options
->osd_idle_ttl
* HZ
));
2581 osdc
->req_mempool
= mempool_create_kmalloc_pool(10,
2582 sizeof(struct ceph_osd_request
));
2583 if (!osdc
->req_mempool
)
2586 err
= ceph_msgpool_init(&osdc
->msgpool_op
, CEPH_MSG_OSD_OP
,
2587 OSD_OP_FRONT_LEN
, 10, true,
2591 err
= ceph_msgpool_init(&osdc
->msgpool_op_reply
, CEPH_MSG_OSD_OPREPLY
,
2592 OSD_OPREPLY_FRONT_LEN
, 10, true,
2598 osdc
->notify_wq
= create_singlethread_workqueue("ceph-watch-notify");
2599 if (!osdc
->notify_wq
)
2600 goto out_msgpool_reply
;
2605 ceph_msgpool_destroy(&osdc
->msgpool_op_reply
);
2607 ceph_msgpool_destroy(&osdc
->msgpool_op
);
2609 mempool_destroy(osdc
->req_mempool
);
2614 void ceph_osdc_stop(struct ceph_osd_client
*osdc
)
2616 flush_workqueue(osdc
->notify_wq
);
2617 destroy_workqueue(osdc
->notify_wq
);
2618 cancel_delayed_work_sync(&osdc
->timeout_work
);
2619 cancel_delayed_work_sync(&osdc
->osds_timeout_work
);
2621 ceph_osdmap_destroy(osdc
->osdmap
);
2622 osdc
->osdmap
= NULL
;
2624 remove_all_osds(osdc
);
2625 mempool_destroy(osdc
->req_mempool
);
2626 ceph_msgpool_destroy(&osdc
->msgpool_op
);
2627 ceph_msgpool_destroy(&osdc
->msgpool_op_reply
);
2631 * Read some contiguous pages. If we cross a stripe boundary, shorten
2632 * *plen. Return number of bytes read, or error.
2634 int ceph_osdc_readpages(struct ceph_osd_client
*osdc
,
2635 struct ceph_vino vino
, struct ceph_file_layout
*layout
,
2637 u32 truncate_seq
, u64 truncate_size
,
2638 struct page
**pages
, int num_pages
, int page_align
)
2640 struct ceph_osd_request
*req
;
2643 dout("readpages on ino %llx.%llx on %llu~%llu\n", vino
.ino
,
2644 vino
.snap
, off
, *plen
);
2645 req
= ceph_osdc_new_request(osdc
, layout
, vino
, off
, plen
, 1,
2646 CEPH_OSD_OP_READ
, CEPH_OSD_FLAG_READ
,
2647 NULL
, truncate_seq
, truncate_size
,
2650 return PTR_ERR(req
);
2652 /* it may be a short read due to an object boundary */
2654 osd_req_op_extent_osd_data_pages(req
, 0,
2655 pages
, *plen
, page_align
, false, false);
2657 dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n",
2658 off
, *plen
, *plen
, page_align
);
2660 ceph_osdc_build_request(req
, off
, NULL
, vino
.snap
, NULL
);
2662 rc
= ceph_osdc_start_request(osdc
, req
, false);
2664 rc
= ceph_osdc_wait_request(osdc
, req
);
2666 ceph_osdc_put_request(req
);
2667 dout("readpages result %d\n", rc
);
2670 EXPORT_SYMBOL(ceph_osdc_readpages
);
2673 * do a synchronous write on N pages
2675 int ceph_osdc_writepages(struct ceph_osd_client
*osdc
, struct ceph_vino vino
,
2676 struct ceph_file_layout
*layout
,
2677 struct ceph_snap_context
*snapc
,
2679 u32 truncate_seq
, u64 truncate_size
,
2680 struct timespec
*mtime
,
2681 struct page
**pages
, int num_pages
)
2683 struct ceph_osd_request
*req
;
2685 int page_align
= off
& ~PAGE_MASK
;
2687 BUG_ON(vino
.snap
!= CEPH_NOSNAP
); /* snapshots aren't writeable */
2688 req
= ceph_osdc_new_request(osdc
, layout
, vino
, off
, &len
, 1,
2690 CEPH_OSD_FLAG_ONDISK
| CEPH_OSD_FLAG_WRITE
,
2691 snapc
, truncate_seq
, truncate_size
,
2694 return PTR_ERR(req
);
2696 /* it may be a short write due to an object boundary */
2697 osd_req_op_extent_osd_data_pages(req
, 0, pages
, len
, page_align
,
2699 dout("writepages %llu~%llu (%llu bytes)\n", off
, len
, len
);
2701 ceph_osdc_build_request(req
, off
, snapc
, CEPH_NOSNAP
, mtime
);
2703 rc
= ceph_osdc_start_request(osdc
, req
, true);
2705 rc
= ceph_osdc_wait_request(osdc
, req
);
2707 ceph_osdc_put_request(req
);
2710 dout("writepages result %d\n", rc
);
2713 EXPORT_SYMBOL(ceph_osdc_writepages
);
2715 int ceph_osdc_setup(void)
2717 BUG_ON(ceph_osd_request_cache
);
2718 ceph_osd_request_cache
= kmem_cache_create("ceph_osd_request",
2719 sizeof (struct ceph_osd_request
),
2720 __alignof__(struct ceph_osd_request
),
2723 return ceph_osd_request_cache
? 0 : -ENOMEM
;
2725 EXPORT_SYMBOL(ceph_osdc_setup
);
2727 void ceph_osdc_cleanup(void)
2729 BUG_ON(!ceph_osd_request_cache
);
2730 kmem_cache_destroy(ceph_osd_request_cache
);
2731 ceph_osd_request_cache
= NULL
;
2733 EXPORT_SYMBOL(ceph_osdc_cleanup
);
2736 * handle incoming message
2738 static void dispatch(struct ceph_connection
*con
, struct ceph_msg
*msg
)
2740 struct ceph_osd
*osd
= con
->private;
2741 struct ceph_osd_client
*osdc
;
2742 int type
= le16_to_cpu(msg
->hdr
.type
);
2749 case CEPH_MSG_OSD_MAP
:
2750 ceph_osdc_handle_map(osdc
, msg
);
2752 case CEPH_MSG_OSD_OPREPLY
:
2753 handle_reply(osdc
, msg
, con
);
2755 case CEPH_MSG_WATCH_NOTIFY
:
2756 handle_watch_notify(osdc
, msg
);
2760 pr_err("received unknown message type %d %s\n", type
,
2761 ceph_msg_type_name(type
));
2768 * lookup and return message for incoming reply. set up reply message
2771 static struct ceph_msg
*get_reply(struct ceph_connection
*con
,
2772 struct ceph_msg_header
*hdr
,
2775 struct ceph_osd
*osd
= con
->private;
2776 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
2778 struct ceph_osd_request
*req
;
2779 int front_len
= le32_to_cpu(hdr
->front_len
);
2780 int data_len
= le32_to_cpu(hdr
->data_len
);
2783 tid
= le64_to_cpu(hdr
->tid
);
2784 mutex_lock(&osdc
->request_mutex
);
2785 req
= __lookup_request(osdc
, tid
);
2789 dout("get_reply unknown tid %llu from osd%d\n", tid
,
2794 if (req
->r_reply
->con
)
2795 dout("%s revoking msg %p from old con %p\n", __func__
,
2796 req
->r_reply
, req
->r_reply
->con
);
2797 ceph_msg_revoke_incoming(req
->r_reply
);
2799 if (front_len
> req
->r_reply
->front_alloc_len
) {
2800 pr_warning("get_reply front %d > preallocated %d (%u#%llu)\n",
2801 front_len
, req
->r_reply
->front_alloc_len
,
2802 (unsigned int)con
->peer_name
.type
,
2803 le64_to_cpu(con
->peer_name
.num
));
2804 m
= ceph_msg_new(CEPH_MSG_OSD_OPREPLY
, front_len
, GFP_NOFS
,
2808 ceph_msg_put(req
->r_reply
);
2811 m
= ceph_msg_get(req
->r_reply
);
2814 struct ceph_osd_data
*osd_data
;
2817 * XXX This is assuming there is only one op containing
2818 * XXX page data. Probably OK for reads, but this
2819 * XXX ought to be done more generally.
2821 osd_data
= osd_req_op_extent_osd_data(req
, 0);
2822 if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGES
) {
2823 if (osd_data
->pages
&&
2824 unlikely(osd_data
->length
< data_len
)) {
2826 pr_warning("tid %lld reply has %d bytes "
2827 "we had only %llu bytes ready\n",
2828 tid
, data_len
, osd_data
->length
);
2837 dout("get_reply tid %lld %p\n", tid
, m
);
2840 mutex_unlock(&osdc
->request_mutex
);
2845 static struct ceph_msg
*alloc_msg(struct ceph_connection
*con
,
2846 struct ceph_msg_header
*hdr
,
2849 struct ceph_osd
*osd
= con
->private;
2850 int type
= le16_to_cpu(hdr
->type
);
2851 int front
= le32_to_cpu(hdr
->front_len
);
2855 case CEPH_MSG_OSD_MAP
:
2856 case CEPH_MSG_WATCH_NOTIFY
:
2857 return ceph_msg_new(type
, front
, GFP_NOFS
, false);
2858 case CEPH_MSG_OSD_OPREPLY
:
2859 return get_reply(con
, hdr
, skip
);
2861 pr_info("alloc_msg unexpected msg type %d from osd%d\n", type
,
2869 * Wrappers to refcount containing ceph_osd struct
2871 static struct ceph_connection
*get_osd_con(struct ceph_connection
*con
)
2873 struct ceph_osd
*osd
= con
->private;
2879 static void put_osd_con(struct ceph_connection
*con
)
2881 struct ceph_osd
*osd
= con
->private;
2889 * Note: returned pointer is the address of a structure that's
2890 * managed separately. Caller must *not* attempt to free it.
2892 static struct ceph_auth_handshake
*get_authorizer(struct ceph_connection
*con
,
2893 int *proto
, int force_new
)
2895 struct ceph_osd
*o
= con
->private;
2896 struct ceph_osd_client
*osdc
= o
->o_osdc
;
2897 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
2898 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
2900 if (force_new
&& auth
->authorizer
) {
2901 ceph_auth_destroy_authorizer(ac
, auth
->authorizer
);
2902 auth
->authorizer
= NULL
;
2904 if (!auth
->authorizer
) {
2905 int ret
= ceph_auth_create_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
,
2908 return ERR_PTR(ret
);
2910 int ret
= ceph_auth_update_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
,
2913 return ERR_PTR(ret
);
2915 *proto
= ac
->protocol
;
2921 static int verify_authorizer_reply(struct ceph_connection
*con
, int len
)
2923 struct ceph_osd
*o
= con
->private;
2924 struct ceph_osd_client
*osdc
= o
->o_osdc
;
2925 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
2927 return ceph_auth_verify_authorizer_reply(ac
, o
->o_auth
.authorizer
, len
);
2930 static int invalidate_authorizer(struct ceph_connection
*con
)
2932 struct ceph_osd
*o
= con
->private;
2933 struct ceph_osd_client
*osdc
= o
->o_osdc
;
2934 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
2936 ceph_auth_invalidate_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
);
2937 return ceph_monc_validate_auth(&osdc
->client
->monc
);
2940 static const struct ceph_connection_operations osd_con_ops
= {
2943 .dispatch
= dispatch
,
2944 .get_authorizer
= get_authorizer
,
2945 .verify_authorizer_reply
= verify_authorizer_reply
,
2946 .invalidate_authorizer
= invalidate_authorizer
,
2947 .alloc_msg
= alloc_msg
,