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_request(struct ceph_osd_client
*osdc
,
34 struct ceph_osd_request
*req
);
35 static void __unregister_linger_request(struct ceph_osd_client
*osdc
,
36 struct ceph_osd_request
*req
);
37 static void __enqueue_request(struct ceph_osd_request
*req
);
38 static void __send_request(struct ceph_osd_client
*osdc
,
39 struct ceph_osd_request
*req
);
42 * Implement client access to distributed object storage cluster.
44 * All data objects are stored within a cluster/cloud of OSDs, or
45 * "object storage devices." (Note that Ceph OSDs have _nothing_ to
46 * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply
47 * remote daemons serving up and coordinating consistent and safe
50 * Cluster membership and the mapping of data objects onto storage devices
51 * are described by the osd map.
53 * We keep track of pending OSD requests (read, write), resubmit
54 * requests to different OSDs when the cluster topology/data layout
55 * change, or retry the affected requests when the communications
56 * channel with an OSD is reset.
60 * calculate the mapping of a file extent onto an object, and fill out the
61 * request accordingly. shorten extent as necessary if it crosses an
64 * fill osd op in request message.
66 static int calc_layout(struct ceph_file_layout
*layout
, u64 off
, u64
*plen
,
67 u64
*objnum
, u64
*objoff
, u64
*objlen
)
73 r
= ceph_calc_file_object_mapping(layout
, off
, orig_len
, objnum
,
77 if (*objlen
< orig_len
) {
79 dout(" skipping last %llu, final file extent %llu~%llu\n",
80 orig_len
- *plen
, off
, *plen
);
83 dout("calc_layout objnum=%llx %llu~%llu\n", *objnum
, *objoff
, *objlen
);
88 static void ceph_osd_data_init(struct ceph_osd_data
*osd_data
)
90 memset(osd_data
, 0, sizeof (*osd_data
));
91 osd_data
->type
= CEPH_OSD_DATA_TYPE_NONE
;
94 static void ceph_osd_data_pages_init(struct ceph_osd_data
*osd_data
,
95 struct page
**pages
, u64 length
, u32 alignment
,
96 bool pages_from_pool
, bool own_pages
)
98 osd_data
->type
= CEPH_OSD_DATA_TYPE_PAGES
;
99 osd_data
->pages
= pages
;
100 osd_data
->length
= length
;
101 osd_data
->alignment
= alignment
;
102 osd_data
->pages_from_pool
= pages_from_pool
;
103 osd_data
->own_pages
= own_pages
;
106 static void ceph_osd_data_pagelist_init(struct ceph_osd_data
*osd_data
,
107 struct ceph_pagelist
*pagelist
)
109 osd_data
->type
= CEPH_OSD_DATA_TYPE_PAGELIST
;
110 osd_data
->pagelist
= pagelist
;
114 static void ceph_osd_data_bio_init(struct ceph_osd_data
*osd_data
,
115 struct bio
*bio
, size_t bio_length
)
117 osd_data
->type
= CEPH_OSD_DATA_TYPE_BIO
;
119 osd_data
->bio_length
= bio_length
;
121 #endif /* CONFIG_BLOCK */
123 #define osd_req_op_data(oreq, whch, typ, fld) \
125 BUG_ON(whch >= (oreq)->r_num_ops); \
126 &(oreq)->r_ops[whch].typ.fld; \
129 static struct ceph_osd_data
*
130 osd_req_op_raw_data_in(struct ceph_osd_request
*osd_req
, unsigned int which
)
132 BUG_ON(which
>= osd_req
->r_num_ops
);
134 return &osd_req
->r_ops
[which
].raw_data_in
;
137 struct ceph_osd_data
*
138 osd_req_op_extent_osd_data(struct ceph_osd_request
*osd_req
,
141 return osd_req_op_data(osd_req
, which
, extent
, osd_data
);
143 EXPORT_SYMBOL(osd_req_op_extent_osd_data
);
145 struct ceph_osd_data
*
146 osd_req_op_cls_response_data(struct ceph_osd_request
*osd_req
,
149 return osd_req_op_data(osd_req
, which
, cls
, response_data
);
151 EXPORT_SYMBOL(osd_req_op_cls_response_data
); /* ??? */
153 void osd_req_op_raw_data_in_pages(struct ceph_osd_request
*osd_req
,
154 unsigned int which
, struct page
**pages
,
155 u64 length
, u32 alignment
,
156 bool pages_from_pool
, bool own_pages
)
158 struct ceph_osd_data
*osd_data
;
160 osd_data
= osd_req_op_raw_data_in(osd_req
, which
);
161 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
162 pages_from_pool
, own_pages
);
164 EXPORT_SYMBOL(osd_req_op_raw_data_in_pages
);
166 void osd_req_op_extent_osd_data_pages(struct ceph_osd_request
*osd_req
,
167 unsigned int which
, struct page
**pages
,
168 u64 length
, u32 alignment
,
169 bool pages_from_pool
, bool own_pages
)
171 struct ceph_osd_data
*osd_data
;
173 osd_data
= osd_req_op_data(osd_req
, which
, extent
, osd_data
);
174 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
175 pages_from_pool
, own_pages
);
177 EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages
);
179 void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request
*osd_req
,
180 unsigned int which
, struct ceph_pagelist
*pagelist
)
182 struct ceph_osd_data
*osd_data
;
184 osd_data
= osd_req_op_data(osd_req
, which
, extent
, osd_data
);
185 ceph_osd_data_pagelist_init(osd_data
, pagelist
);
187 EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist
);
190 void osd_req_op_extent_osd_data_bio(struct ceph_osd_request
*osd_req
,
191 unsigned int which
, struct bio
*bio
, size_t bio_length
)
193 struct ceph_osd_data
*osd_data
;
195 osd_data
= osd_req_op_data(osd_req
, which
, extent
, osd_data
);
196 ceph_osd_data_bio_init(osd_data
, bio
, bio_length
);
198 EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio
);
199 #endif /* CONFIG_BLOCK */
201 static void osd_req_op_cls_request_info_pagelist(
202 struct ceph_osd_request
*osd_req
,
203 unsigned int which
, struct ceph_pagelist
*pagelist
)
205 struct ceph_osd_data
*osd_data
;
207 osd_data
= osd_req_op_data(osd_req
, which
, cls
, request_info
);
208 ceph_osd_data_pagelist_init(osd_data
, pagelist
);
211 void osd_req_op_cls_request_data_pagelist(
212 struct ceph_osd_request
*osd_req
,
213 unsigned int which
, struct ceph_pagelist
*pagelist
)
215 struct ceph_osd_data
*osd_data
;
217 osd_data
= osd_req_op_data(osd_req
, which
, cls
, request_data
);
218 ceph_osd_data_pagelist_init(osd_data
, pagelist
);
220 EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist
);
222 void osd_req_op_cls_request_data_pages(struct ceph_osd_request
*osd_req
,
223 unsigned int which
, struct page
**pages
, u64 length
,
224 u32 alignment
, bool pages_from_pool
, bool own_pages
)
226 struct ceph_osd_data
*osd_data
;
228 osd_data
= osd_req_op_data(osd_req
, which
, cls
, request_data
);
229 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
230 pages_from_pool
, own_pages
);
232 EXPORT_SYMBOL(osd_req_op_cls_request_data_pages
);
234 void osd_req_op_cls_response_data_pages(struct ceph_osd_request
*osd_req
,
235 unsigned int which
, struct page
**pages
, u64 length
,
236 u32 alignment
, bool pages_from_pool
, bool own_pages
)
238 struct ceph_osd_data
*osd_data
;
240 osd_data
= osd_req_op_data(osd_req
, which
, cls
, response_data
);
241 ceph_osd_data_pages_init(osd_data
, pages
, length
, alignment
,
242 pages_from_pool
, own_pages
);
244 EXPORT_SYMBOL(osd_req_op_cls_response_data_pages
);
246 static u64
ceph_osd_data_length(struct ceph_osd_data
*osd_data
)
248 switch (osd_data
->type
) {
249 case CEPH_OSD_DATA_TYPE_NONE
:
251 case CEPH_OSD_DATA_TYPE_PAGES
:
252 return osd_data
->length
;
253 case CEPH_OSD_DATA_TYPE_PAGELIST
:
254 return (u64
)osd_data
->pagelist
->length
;
256 case CEPH_OSD_DATA_TYPE_BIO
:
257 return (u64
)osd_data
->bio_length
;
258 #endif /* CONFIG_BLOCK */
260 WARN(true, "unrecognized data type %d\n", (int)osd_data
->type
);
265 static void ceph_osd_data_release(struct ceph_osd_data
*osd_data
)
267 if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGES
&& osd_data
->own_pages
) {
270 num_pages
= calc_pages_for((u64
)osd_data
->alignment
,
271 (u64
)osd_data
->length
);
272 ceph_release_page_vector(osd_data
->pages
, num_pages
);
274 ceph_osd_data_init(osd_data
);
277 static void osd_req_op_data_release(struct ceph_osd_request
*osd_req
,
280 struct ceph_osd_req_op
*op
;
282 BUG_ON(which
>= osd_req
->r_num_ops
);
283 op
= &osd_req
->r_ops
[which
];
286 case CEPH_OSD_OP_READ
:
287 case CEPH_OSD_OP_WRITE
:
288 ceph_osd_data_release(&op
->extent
.osd_data
);
290 case CEPH_OSD_OP_CALL
:
291 ceph_osd_data_release(&op
->cls
.request_info
);
292 ceph_osd_data_release(&op
->cls
.request_data
);
293 ceph_osd_data_release(&op
->cls
.response_data
);
295 case CEPH_OSD_OP_SETXATTR
:
296 case CEPH_OSD_OP_CMPXATTR
:
297 ceph_osd_data_release(&op
->xattr
.osd_data
);
307 static void ceph_osdc_release_request(struct kref
*kref
)
309 struct ceph_osd_request
*req
= container_of(kref
,
310 struct ceph_osd_request
, r_kref
);
313 dout("%s %p (r_request %p r_reply %p)\n", __func__
, req
,
314 req
->r_request
, req
->r_reply
);
315 WARN_ON(!RB_EMPTY_NODE(&req
->r_node
));
316 WARN_ON(!list_empty(&req
->r_req_lru_item
));
317 WARN_ON(!list_empty(&req
->r_osd_item
));
318 WARN_ON(!list_empty(&req
->r_linger_item
));
319 WARN_ON(!list_empty(&req
->r_linger_osd_item
));
323 ceph_msg_put(req
->r_request
);
325 ceph_msg_revoke_incoming(req
->r_reply
);
326 ceph_msg_put(req
->r_reply
);
329 for (which
= 0; which
< req
->r_num_ops
; which
++)
330 osd_req_op_data_release(req
, which
);
332 ceph_put_snap_context(req
->r_snapc
);
334 mempool_free(req
, req
->r_osdc
->req_mempool
);
336 kmem_cache_free(ceph_osd_request_cache
, req
);
340 void ceph_osdc_get_request(struct ceph_osd_request
*req
)
342 dout("%s %p (was %d)\n", __func__
, req
,
343 atomic_read(&req
->r_kref
.refcount
));
344 kref_get(&req
->r_kref
);
346 EXPORT_SYMBOL(ceph_osdc_get_request
);
348 void ceph_osdc_put_request(struct ceph_osd_request
*req
)
350 dout("%s %p (was %d)\n", __func__
, req
,
351 atomic_read(&req
->r_kref
.refcount
));
352 kref_put(&req
->r_kref
, ceph_osdc_release_request
);
354 EXPORT_SYMBOL(ceph_osdc_put_request
);
356 struct ceph_osd_request
*ceph_osdc_alloc_request(struct ceph_osd_client
*osdc
,
357 struct ceph_snap_context
*snapc
,
358 unsigned int num_ops
,
362 struct ceph_osd_request
*req
;
363 struct ceph_msg
*msg
;
366 BUILD_BUG_ON(CEPH_OSD_MAX_OP
> U16_MAX
);
367 BUG_ON(num_ops
> CEPH_OSD_MAX_OP
);
369 msg_size
= 4 + 4 + 8 + 8 + 4+8;
370 msg_size
+= 2 + 4 + 8 + 4 + 4; /* oloc */
371 msg_size
+= 1 + 8 + 4 + 4; /* pg_t */
372 msg_size
+= 4 + CEPH_MAX_OID_NAME_LEN
; /* oid */
373 msg_size
+= 2 + num_ops
*sizeof(struct ceph_osd_op
);
374 msg_size
+= 8; /* snapid */
375 msg_size
+= 8; /* snap_seq */
376 msg_size
+= 8 * (snapc
? snapc
->num_snaps
: 0); /* snaps */
380 req
= mempool_alloc(osdc
->req_mempool
, gfp_flags
);
381 memset(req
, 0, sizeof(*req
));
383 req
= kmem_cache_zalloc(ceph_osd_request_cache
, gfp_flags
);
389 req
->r_mempool
= use_mempool
;
390 req
->r_num_ops
= num_ops
;
392 kref_init(&req
->r_kref
);
393 init_completion(&req
->r_completion
);
394 init_completion(&req
->r_safe_completion
);
395 RB_CLEAR_NODE(&req
->r_node
);
396 INIT_LIST_HEAD(&req
->r_unsafe_item
);
397 INIT_LIST_HEAD(&req
->r_linger_item
);
398 INIT_LIST_HEAD(&req
->r_linger_osd_item
);
399 INIT_LIST_HEAD(&req
->r_req_lru_item
);
400 INIT_LIST_HEAD(&req
->r_osd_item
);
402 req
->r_base_oloc
.pool
= -1;
403 req
->r_target_oloc
.pool
= -1;
405 /* create reply message */
407 msg
= ceph_msgpool_get(&osdc
->msgpool_op_reply
, 0);
409 msg
= ceph_msg_new(CEPH_MSG_OSD_OPREPLY
,
410 OSD_OPREPLY_FRONT_LEN
, gfp_flags
, true);
412 ceph_osdc_put_request(req
);
417 /* create request message; allow space for oid */
419 msg
= ceph_msgpool_get(&osdc
->msgpool_op
, 0);
421 msg
= ceph_msg_new(CEPH_MSG_OSD_OP
, msg_size
, gfp_flags
, true);
423 ceph_osdc_put_request(req
);
427 memset(msg
->front
.iov_base
, 0, msg
->front
.iov_len
);
429 req
->r_request
= msg
;
433 EXPORT_SYMBOL(ceph_osdc_alloc_request
);
435 static bool osd_req_opcode_valid(u16 opcode
)
438 #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true;
439 __CEPH_FORALL_OSD_OPS(GENERATE_CASE
)
447 * This is an osd op init function for opcodes that have no data or
448 * other information associated with them. It also serves as a
449 * common init routine for all the other init functions, below.
451 static struct ceph_osd_req_op
*
452 _osd_req_op_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
455 struct ceph_osd_req_op
*op
;
457 BUG_ON(which
>= osd_req
->r_num_ops
);
458 BUG_ON(!osd_req_opcode_valid(opcode
));
460 op
= &osd_req
->r_ops
[which
];
461 memset(op
, 0, sizeof (*op
));
467 void osd_req_op_init(struct ceph_osd_request
*osd_req
,
468 unsigned int which
, u16 opcode
)
470 (void)_osd_req_op_init(osd_req
, which
, opcode
);
472 EXPORT_SYMBOL(osd_req_op_init
);
474 void osd_req_op_extent_init(struct ceph_osd_request
*osd_req
,
475 unsigned int which
, u16 opcode
,
476 u64 offset
, u64 length
,
477 u64 truncate_size
, u32 truncate_seq
)
479 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
, opcode
);
480 size_t payload_len
= 0;
482 BUG_ON(opcode
!= CEPH_OSD_OP_READ
&& opcode
!= CEPH_OSD_OP_WRITE
&&
483 opcode
!= CEPH_OSD_OP_ZERO
&& opcode
!= CEPH_OSD_OP_TRUNCATE
);
485 op
->extent
.offset
= offset
;
486 op
->extent
.length
= length
;
487 op
->extent
.truncate_size
= truncate_size
;
488 op
->extent
.truncate_seq
= truncate_seq
;
489 if (opcode
== CEPH_OSD_OP_WRITE
)
490 payload_len
+= length
;
492 op
->payload_len
= payload_len
;
494 EXPORT_SYMBOL(osd_req_op_extent_init
);
496 void osd_req_op_extent_update(struct ceph_osd_request
*osd_req
,
497 unsigned int which
, u64 length
)
499 struct ceph_osd_req_op
*op
;
502 BUG_ON(which
>= osd_req
->r_num_ops
);
503 op
= &osd_req
->r_ops
[which
];
504 previous
= op
->extent
.length
;
506 if (length
== previous
)
507 return; /* Nothing to do */
508 BUG_ON(length
> previous
);
510 op
->extent
.length
= length
;
511 op
->payload_len
-= previous
- length
;
513 EXPORT_SYMBOL(osd_req_op_extent_update
);
515 void osd_req_op_cls_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
516 u16 opcode
, const char *class, const char *method
)
518 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
, opcode
);
519 struct ceph_pagelist
*pagelist
;
520 size_t payload_len
= 0;
523 BUG_ON(opcode
!= CEPH_OSD_OP_CALL
);
525 pagelist
= kmalloc(sizeof (*pagelist
), GFP_NOFS
);
527 ceph_pagelist_init(pagelist
);
529 op
->cls
.class_name
= class;
530 size
= strlen(class);
531 BUG_ON(size
> (size_t) U8_MAX
);
532 op
->cls
.class_len
= size
;
533 ceph_pagelist_append(pagelist
, class, size
);
536 op
->cls
.method_name
= method
;
537 size
= strlen(method
);
538 BUG_ON(size
> (size_t) U8_MAX
);
539 op
->cls
.method_len
= size
;
540 ceph_pagelist_append(pagelist
, method
, size
);
543 osd_req_op_cls_request_info_pagelist(osd_req
, which
, pagelist
);
545 op
->cls
.argc
= 0; /* currently unused */
547 op
->payload_len
= payload_len
;
549 EXPORT_SYMBOL(osd_req_op_cls_init
);
551 int osd_req_op_xattr_init(struct ceph_osd_request
*osd_req
, unsigned int which
,
552 u16 opcode
, const char *name
, const void *value
,
553 size_t size
, u8 cmp_op
, u8 cmp_mode
)
555 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
, opcode
);
556 struct ceph_pagelist
*pagelist
;
559 BUG_ON(opcode
!= CEPH_OSD_OP_SETXATTR
&& opcode
!= CEPH_OSD_OP_CMPXATTR
);
561 pagelist
= kmalloc(sizeof(*pagelist
), GFP_NOFS
);
565 ceph_pagelist_init(pagelist
);
567 payload_len
= strlen(name
);
568 op
->xattr
.name_len
= payload_len
;
569 ceph_pagelist_append(pagelist
, name
, payload_len
);
571 op
->xattr
.value_len
= size
;
572 ceph_pagelist_append(pagelist
, value
, size
);
575 op
->xattr
.cmp_op
= cmp_op
;
576 op
->xattr
.cmp_mode
= cmp_mode
;
578 ceph_osd_data_pagelist_init(&op
->xattr
.osd_data
, pagelist
);
579 op
->payload_len
= payload_len
;
582 EXPORT_SYMBOL(osd_req_op_xattr_init
);
584 void osd_req_op_watch_init(struct ceph_osd_request
*osd_req
,
585 unsigned int which
, u16 opcode
,
586 u64 cookie
, u64 version
, int flag
)
588 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
, opcode
);
590 BUG_ON(opcode
!= CEPH_OSD_OP_NOTIFY_ACK
&& opcode
!= CEPH_OSD_OP_WATCH
);
592 op
->watch
.cookie
= cookie
;
593 op
->watch
.ver
= version
;
594 if (opcode
== CEPH_OSD_OP_WATCH
&& flag
)
595 op
->watch
.flag
= (u8
)1;
597 EXPORT_SYMBOL(osd_req_op_watch_init
);
599 void osd_req_op_alloc_hint_init(struct ceph_osd_request
*osd_req
,
601 u64 expected_object_size
,
602 u64 expected_write_size
)
604 struct ceph_osd_req_op
*op
= _osd_req_op_init(osd_req
, which
,
605 CEPH_OSD_OP_SETALLOCHINT
);
607 op
->alloc_hint
.expected_object_size
= expected_object_size
;
608 op
->alloc_hint
.expected_write_size
= expected_write_size
;
611 * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed
612 * not worth a feature bit. Set FAILOK per-op flag to make
613 * sure older osds don't trip over an unsupported opcode.
615 op
->flags
|= CEPH_OSD_OP_FLAG_FAILOK
;
617 EXPORT_SYMBOL(osd_req_op_alloc_hint_init
);
619 static void ceph_osdc_msg_data_add(struct ceph_msg
*msg
,
620 struct ceph_osd_data
*osd_data
)
622 u64 length
= ceph_osd_data_length(osd_data
);
624 if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGES
) {
625 BUG_ON(length
> (u64
) SIZE_MAX
);
627 ceph_msg_data_add_pages(msg
, osd_data
->pages
,
628 length
, osd_data
->alignment
);
629 } else if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGELIST
) {
631 ceph_msg_data_add_pagelist(msg
, osd_data
->pagelist
);
633 } else if (osd_data
->type
== CEPH_OSD_DATA_TYPE_BIO
) {
634 ceph_msg_data_add_bio(msg
, osd_data
->bio
, length
);
637 BUG_ON(osd_data
->type
!= CEPH_OSD_DATA_TYPE_NONE
);
641 static u64
osd_req_encode_op(struct ceph_osd_request
*req
,
642 struct ceph_osd_op
*dst
, unsigned int which
)
644 struct ceph_osd_req_op
*src
;
645 struct ceph_osd_data
*osd_data
;
646 u64 request_data_len
= 0;
649 BUG_ON(which
>= req
->r_num_ops
);
650 src
= &req
->r_ops
[which
];
651 if (WARN_ON(!osd_req_opcode_valid(src
->op
))) {
652 pr_err("unrecognized osd opcode %d\n", src
->op
);
658 case CEPH_OSD_OP_STAT
:
659 osd_data
= &src
->raw_data_in
;
660 ceph_osdc_msg_data_add(req
->r_reply
, osd_data
);
662 case CEPH_OSD_OP_READ
:
663 case CEPH_OSD_OP_WRITE
:
664 case CEPH_OSD_OP_ZERO
:
665 case CEPH_OSD_OP_TRUNCATE
:
666 if (src
->op
== CEPH_OSD_OP_WRITE
)
667 request_data_len
= src
->extent
.length
;
668 dst
->extent
.offset
= cpu_to_le64(src
->extent
.offset
);
669 dst
->extent
.length
= cpu_to_le64(src
->extent
.length
);
670 dst
->extent
.truncate_size
=
671 cpu_to_le64(src
->extent
.truncate_size
);
672 dst
->extent
.truncate_seq
=
673 cpu_to_le32(src
->extent
.truncate_seq
);
674 osd_data
= &src
->extent
.osd_data
;
675 if (src
->op
== CEPH_OSD_OP_WRITE
)
676 ceph_osdc_msg_data_add(req
->r_request
, osd_data
);
678 ceph_osdc_msg_data_add(req
->r_reply
, osd_data
);
680 case CEPH_OSD_OP_CALL
:
681 dst
->cls
.class_len
= src
->cls
.class_len
;
682 dst
->cls
.method_len
= src
->cls
.method_len
;
683 osd_data
= &src
->cls
.request_info
;
684 ceph_osdc_msg_data_add(req
->r_request
, osd_data
);
685 BUG_ON(osd_data
->type
!= CEPH_OSD_DATA_TYPE_PAGELIST
);
686 request_data_len
= osd_data
->pagelist
->length
;
688 osd_data
= &src
->cls
.request_data
;
689 data_length
= ceph_osd_data_length(osd_data
);
691 BUG_ON(osd_data
->type
== CEPH_OSD_DATA_TYPE_NONE
);
692 dst
->cls
.indata_len
= cpu_to_le32(data_length
);
693 ceph_osdc_msg_data_add(req
->r_request
, osd_data
);
694 src
->payload_len
+= data_length
;
695 request_data_len
+= data_length
;
697 osd_data
= &src
->cls
.response_data
;
698 ceph_osdc_msg_data_add(req
->r_reply
, osd_data
);
700 case CEPH_OSD_OP_STARTSYNC
:
702 case CEPH_OSD_OP_NOTIFY_ACK
:
703 case CEPH_OSD_OP_WATCH
:
704 dst
->watch
.cookie
= cpu_to_le64(src
->watch
.cookie
);
705 dst
->watch
.ver
= cpu_to_le64(src
->watch
.ver
);
706 dst
->watch
.flag
= src
->watch
.flag
;
708 case CEPH_OSD_OP_SETALLOCHINT
:
709 dst
->alloc_hint
.expected_object_size
=
710 cpu_to_le64(src
->alloc_hint
.expected_object_size
);
711 dst
->alloc_hint
.expected_write_size
=
712 cpu_to_le64(src
->alloc_hint
.expected_write_size
);
714 case CEPH_OSD_OP_SETXATTR
:
715 case CEPH_OSD_OP_CMPXATTR
:
716 dst
->xattr
.name_len
= cpu_to_le32(src
->xattr
.name_len
);
717 dst
->xattr
.value_len
= cpu_to_le32(src
->xattr
.value_len
);
718 dst
->xattr
.cmp_op
= src
->xattr
.cmp_op
;
719 dst
->xattr
.cmp_mode
= src
->xattr
.cmp_mode
;
720 osd_data
= &src
->xattr
.osd_data
;
721 ceph_osdc_msg_data_add(req
->r_request
, osd_data
);
722 request_data_len
= osd_data
->pagelist
->length
;
724 case CEPH_OSD_OP_CREATE
:
725 case CEPH_OSD_OP_DELETE
:
728 pr_err("unsupported osd opcode %s\n",
729 ceph_osd_op_name(src
->op
));
735 dst
->op
= cpu_to_le16(src
->op
);
736 dst
->flags
= cpu_to_le32(src
->flags
);
737 dst
->payload_len
= cpu_to_le32(src
->payload_len
);
739 return request_data_len
;
743 * build new request AND message, calculate layout, and adjust file
746 * if the file was recently truncated, we include information about its
747 * old and new size so that the object can be updated appropriately. (we
748 * avoid synchronously deleting truncated objects because it's slow.)
750 * if @do_sync, include a 'startsync' command so that the osd will flush
753 struct ceph_osd_request
*ceph_osdc_new_request(struct ceph_osd_client
*osdc
,
754 struct ceph_file_layout
*layout
,
755 struct ceph_vino vino
,
757 unsigned int which
, int num_ops
,
758 int opcode
, int flags
,
759 struct ceph_snap_context
*snapc
,
764 struct ceph_osd_request
*req
;
770 BUG_ON(opcode
!= CEPH_OSD_OP_READ
&& opcode
!= CEPH_OSD_OP_WRITE
&&
771 opcode
!= CEPH_OSD_OP_ZERO
&& opcode
!= CEPH_OSD_OP_TRUNCATE
&&
772 opcode
!= CEPH_OSD_OP_CREATE
&& opcode
!= CEPH_OSD_OP_DELETE
);
774 req
= ceph_osdc_alloc_request(osdc
, snapc
, num_ops
, use_mempool
,
777 return ERR_PTR(-ENOMEM
);
779 req
->r_flags
= flags
;
781 /* calculate max write size */
782 r
= calc_layout(layout
, off
, plen
, &objnum
, &objoff
, &objlen
);
784 ceph_osdc_put_request(req
);
788 if (opcode
== CEPH_OSD_OP_CREATE
|| opcode
== CEPH_OSD_OP_DELETE
) {
789 osd_req_op_init(req
, which
, opcode
);
791 u32 object_size
= le32_to_cpu(layout
->fl_object_size
);
792 u32 object_base
= off
- objoff
;
793 if (!(truncate_seq
== 1 && truncate_size
== -1ULL)) {
794 if (truncate_size
<= object_base
) {
797 truncate_size
-= object_base
;
798 if (truncate_size
> object_size
)
799 truncate_size
= object_size
;
802 osd_req_op_extent_init(req
, which
, opcode
, objoff
, objlen
,
803 truncate_size
, truncate_seq
);
806 req
->r_base_oloc
.pool
= ceph_file_layout_pg_pool(*layout
);
808 snprintf(req
->r_base_oid
.name
, sizeof(req
->r_base_oid
.name
),
809 "%llx.%08llx", vino
.ino
, objnum
);
810 req
->r_base_oid
.name_len
= strlen(req
->r_base_oid
.name
);
814 EXPORT_SYMBOL(ceph_osdc_new_request
);
817 * We keep osd requests in an rbtree, sorted by ->r_tid.
819 static void __insert_request(struct ceph_osd_client
*osdc
,
820 struct ceph_osd_request
*new)
822 struct rb_node
**p
= &osdc
->requests
.rb_node
;
823 struct rb_node
*parent
= NULL
;
824 struct ceph_osd_request
*req
= NULL
;
828 req
= rb_entry(parent
, struct ceph_osd_request
, r_node
);
829 if (new->r_tid
< req
->r_tid
)
831 else if (new->r_tid
> req
->r_tid
)
837 rb_link_node(&new->r_node
, parent
, p
);
838 rb_insert_color(&new->r_node
, &osdc
->requests
);
841 static struct ceph_osd_request
*__lookup_request(struct ceph_osd_client
*osdc
,
844 struct ceph_osd_request
*req
;
845 struct rb_node
*n
= osdc
->requests
.rb_node
;
848 req
= rb_entry(n
, struct ceph_osd_request
, r_node
);
849 if (tid
< req
->r_tid
)
851 else if (tid
> req
->r_tid
)
859 static struct ceph_osd_request
*
860 __lookup_request_ge(struct ceph_osd_client
*osdc
,
863 struct ceph_osd_request
*req
;
864 struct rb_node
*n
= osdc
->requests
.rb_node
;
867 req
= rb_entry(n
, struct ceph_osd_request
, r_node
);
868 if (tid
< req
->r_tid
) {
872 } else if (tid
> req
->r_tid
) {
881 static void __kick_linger_request(struct ceph_osd_request
*req
)
883 struct ceph_osd_client
*osdc
= req
->r_osdc
;
884 struct ceph_osd
*osd
= req
->r_osd
;
887 * Linger requests need to be resent with a new tid to avoid
888 * the dup op detection logic on the OSDs. Achieve this with
889 * a re-register dance instead of open-coding.
891 ceph_osdc_get_request(req
);
892 if (!list_empty(&req
->r_linger_item
))
893 __unregister_linger_request(osdc
, req
);
895 __unregister_request(osdc
, req
);
896 __register_request(osdc
, req
);
897 ceph_osdc_put_request(req
);
900 * Unless request has been registered as both normal and
901 * lingering, __unregister{,_linger}_request clears r_osd.
902 * However, here we need to preserve r_osd to make sure we
903 * requeue on the same OSD.
905 WARN_ON(req
->r_osd
|| !osd
);
908 dout("%s requeueing %p tid %llu\n", __func__
, req
, req
->r_tid
);
909 __enqueue_request(req
);
913 * Resubmit requests pending on the given osd.
915 static void __kick_osd_requests(struct ceph_osd_client
*osdc
,
916 struct ceph_osd
*osd
)
918 struct ceph_osd_request
*req
, *nreq
;
920 LIST_HEAD(resend_linger
);
923 dout("%s osd%d\n", __func__
, osd
->o_osd
);
924 err
= __reset_osd(osdc
, osd
);
929 * Build up a list of requests to resend by traversing the
930 * osd's list of requests. Requests for a given object are
931 * sent in tid order, and that is also the order they're
932 * kept on this list. Therefore all requests that are in
933 * flight will be found first, followed by all requests that
934 * have not yet been sent. And to resend requests while
935 * preserving this order we will want to put any sent
936 * requests back on the front of the osd client's unsent
939 * So we build a separate ordered list of already-sent
940 * requests for the affected osd and splice it onto the
941 * front of the osd client's unsent list. Once we've seen a
942 * request that has not yet been sent we're done. Those
943 * requests are already sitting right where they belong.
945 list_for_each_entry(req
, &osd
->o_requests
, r_osd_item
) {
949 if (!req
->r_linger
) {
950 dout("%s requeueing %p tid %llu\n", __func__
, req
,
952 list_move_tail(&req
->r_req_lru_item
, &resend
);
953 req
->r_flags
|= CEPH_OSD_FLAG_RETRY
;
955 list_move_tail(&req
->r_req_lru_item
, &resend_linger
);
958 list_splice(&resend
, &osdc
->req_unsent
);
961 * Both registered and not yet registered linger requests are
962 * enqueued with a new tid on the same OSD. We add/move them
963 * to req_unsent/o_requests at the end to keep things in tid
966 list_for_each_entry_safe(req
, nreq
, &osd
->o_linger_requests
,
968 WARN_ON(!list_empty(&req
->r_req_lru_item
));
969 __kick_linger_request(req
);
972 list_for_each_entry_safe(req
, nreq
, &resend_linger
, r_req_lru_item
)
973 __kick_linger_request(req
);
977 * If the osd connection drops, we need to resubmit all requests.
979 static void osd_reset(struct ceph_connection
*con
)
981 struct ceph_osd
*osd
= con
->private;
982 struct ceph_osd_client
*osdc
;
986 dout("osd_reset osd%d\n", osd
->o_osd
);
988 down_read(&osdc
->map_sem
);
989 mutex_lock(&osdc
->request_mutex
);
990 __kick_osd_requests(osdc
, osd
);
992 mutex_unlock(&osdc
->request_mutex
);
993 up_read(&osdc
->map_sem
);
997 * Track open sessions with osds.
999 static struct ceph_osd
*create_osd(struct ceph_osd_client
*osdc
, int onum
)
1001 struct ceph_osd
*osd
;
1003 osd
= kzalloc(sizeof(*osd
), GFP_NOFS
);
1007 atomic_set(&osd
->o_ref
, 1);
1010 RB_CLEAR_NODE(&osd
->o_node
);
1011 INIT_LIST_HEAD(&osd
->o_requests
);
1012 INIT_LIST_HEAD(&osd
->o_linger_requests
);
1013 INIT_LIST_HEAD(&osd
->o_osd_lru
);
1014 osd
->o_incarnation
= 1;
1016 ceph_con_init(&osd
->o_con
, osd
, &osd_con_ops
, &osdc
->client
->msgr
);
1018 INIT_LIST_HEAD(&osd
->o_keepalive_item
);
1022 static struct ceph_osd
*get_osd(struct ceph_osd
*osd
)
1024 if (atomic_inc_not_zero(&osd
->o_ref
)) {
1025 dout("get_osd %p %d -> %d\n", osd
, atomic_read(&osd
->o_ref
)-1,
1026 atomic_read(&osd
->o_ref
));
1029 dout("get_osd %p FAIL\n", osd
);
1034 static void put_osd(struct ceph_osd
*osd
)
1036 dout("put_osd %p %d -> %d\n", osd
, atomic_read(&osd
->o_ref
),
1037 atomic_read(&osd
->o_ref
) - 1);
1038 if (atomic_dec_and_test(&osd
->o_ref
)) {
1039 struct ceph_auth_client
*ac
= osd
->o_osdc
->client
->monc
.auth
;
1041 if (osd
->o_auth
.authorizer
)
1042 ceph_auth_destroy_authorizer(ac
, osd
->o_auth
.authorizer
);
1048 * remove an osd from our map
1050 static void __remove_osd(struct ceph_osd_client
*osdc
, struct ceph_osd
*osd
)
1052 dout("%s %p osd%d\n", __func__
, osd
, osd
->o_osd
);
1053 WARN_ON(!list_empty(&osd
->o_requests
));
1054 WARN_ON(!list_empty(&osd
->o_linger_requests
));
1056 list_del_init(&osd
->o_osd_lru
);
1057 rb_erase(&osd
->o_node
, &osdc
->osds
);
1058 RB_CLEAR_NODE(&osd
->o_node
);
1061 static void remove_osd(struct ceph_osd_client
*osdc
, struct ceph_osd
*osd
)
1063 dout("%s %p osd%d\n", __func__
, osd
, osd
->o_osd
);
1065 if (!RB_EMPTY_NODE(&osd
->o_node
)) {
1066 ceph_con_close(&osd
->o_con
);
1067 __remove_osd(osdc
, osd
);
1072 static void remove_all_osds(struct ceph_osd_client
*osdc
)
1074 dout("%s %p\n", __func__
, osdc
);
1075 mutex_lock(&osdc
->request_mutex
);
1076 while (!RB_EMPTY_ROOT(&osdc
->osds
)) {
1077 struct ceph_osd
*osd
= rb_entry(rb_first(&osdc
->osds
),
1078 struct ceph_osd
, o_node
);
1079 remove_osd(osdc
, osd
);
1081 mutex_unlock(&osdc
->request_mutex
);
1084 static void __move_osd_to_lru(struct ceph_osd_client
*osdc
,
1085 struct ceph_osd
*osd
)
1087 dout("%s %p\n", __func__
, osd
);
1088 BUG_ON(!list_empty(&osd
->o_osd_lru
));
1090 list_add_tail(&osd
->o_osd_lru
, &osdc
->osd_lru
);
1091 osd
->lru_ttl
= jiffies
+ osdc
->client
->options
->osd_idle_ttl
* HZ
;
1094 static void maybe_move_osd_to_lru(struct ceph_osd_client
*osdc
,
1095 struct ceph_osd
*osd
)
1097 dout("%s %p\n", __func__
, osd
);
1099 if (list_empty(&osd
->o_requests
) &&
1100 list_empty(&osd
->o_linger_requests
))
1101 __move_osd_to_lru(osdc
, osd
);
1104 static void __remove_osd_from_lru(struct ceph_osd
*osd
)
1106 dout("__remove_osd_from_lru %p\n", osd
);
1107 if (!list_empty(&osd
->o_osd_lru
))
1108 list_del_init(&osd
->o_osd_lru
);
1111 static void remove_old_osds(struct ceph_osd_client
*osdc
)
1113 struct ceph_osd
*osd
, *nosd
;
1115 dout("__remove_old_osds %p\n", osdc
);
1116 mutex_lock(&osdc
->request_mutex
);
1117 list_for_each_entry_safe(osd
, nosd
, &osdc
->osd_lru
, o_osd_lru
) {
1118 if (time_before(jiffies
, osd
->lru_ttl
))
1120 remove_osd(osdc
, osd
);
1122 mutex_unlock(&osdc
->request_mutex
);
1128 static int __reset_osd(struct ceph_osd_client
*osdc
, struct ceph_osd
*osd
)
1130 struct ceph_entity_addr
*peer_addr
;
1132 dout("__reset_osd %p osd%d\n", osd
, osd
->o_osd
);
1133 if (list_empty(&osd
->o_requests
) &&
1134 list_empty(&osd
->o_linger_requests
)) {
1135 remove_osd(osdc
, osd
);
1139 peer_addr
= &osdc
->osdmap
->osd_addr
[osd
->o_osd
];
1140 if (!memcmp(peer_addr
, &osd
->o_con
.peer_addr
, sizeof (*peer_addr
)) &&
1141 !ceph_con_opened(&osd
->o_con
)) {
1142 struct ceph_osd_request
*req
;
1144 dout("osd addr hasn't changed and connection never opened, "
1145 "letting msgr retry\n");
1146 /* touch each r_stamp for handle_timeout()'s benfit */
1147 list_for_each_entry(req
, &osd
->o_requests
, r_osd_item
)
1148 req
->r_stamp
= jiffies
;
1153 ceph_con_close(&osd
->o_con
);
1154 ceph_con_open(&osd
->o_con
, CEPH_ENTITY_TYPE_OSD
, osd
->o_osd
, peer_addr
);
1155 osd
->o_incarnation
++;
1160 static void __insert_osd(struct ceph_osd_client
*osdc
, struct ceph_osd
*new)
1162 struct rb_node
**p
= &osdc
->osds
.rb_node
;
1163 struct rb_node
*parent
= NULL
;
1164 struct ceph_osd
*osd
= NULL
;
1166 dout("__insert_osd %p osd%d\n", new, new->o_osd
);
1169 osd
= rb_entry(parent
, struct ceph_osd
, o_node
);
1170 if (new->o_osd
< osd
->o_osd
)
1172 else if (new->o_osd
> osd
->o_osd
)
1173 p
= &(*p
)->rb_right
;
1178 rb_link_node(&new->o_node
, parent
, p
);
1179 rb_insert_color(&new->o_node
, &osdc
->osds
);
1182 static struct ceph_osd
*__lookup_osd(struct ceph_osd_client
*osdc
, int o
)
1184 struct ceph_osd
*osd
;
1185 struct rb_node
*n
= osdc
->osds
.rb_node
;
1188 osd
= rb_entry(n
, struct ceph_osd
, o_node
);
1191 else if (o
> osd
->o_osd
)
1199 static void __schedule_osd_timeout(struct ceph_osd_client
*osdc
)
1201 schedule_delayed_work(&osdc
->timeout_work
,
1202 osdc
->client
->options
->osd_keepalive_timeout
* HZ
);
1205 static void __cancel_osd_timeout(struct ceph_osd_client
*osdc
)
1207 cancel_delayed_work(&osdc
->timeout_work
);
1211 * Register request, assign tid. If this is the first request, set up
1212 * the timeout event.
1214 static void __register_request(struct ceph_osd_client
*osdc
,
1215 struct ceph_osd_request
*req
)
1217 req
->r_tid
= ++osdc
->last_tid
;
1218 req
->r_request
->hdr
.tid
= cpu_to_le64(req
->r_tid
);
1219 dout("__register_request %p tid %lld\n", req
, req
->r_tid
);
1220 __insert_request(osdc
, req
);
1221 ceph_osdc_get_request(req
);
1222 osdc
->num_requests
++;
1223 if (osdc
->num_requests
== 1) {
1224 dout(" first request, scheduling timeout\n");
1225 __schedule_osd_timeout(osdc
);
1230 * called under osdc->request_mutex
1232 static void __unregister_request(struct ceph_osd_client
*osdc
,
1233 struct ceph_osd_request
*req
)
1235 if (RB_EMPTY_NODE(&req
->r_node
)) {
1236 dout("__unregister_request %p tid %lld not registered\n",
1241 dout("__unregister_request %p tid %lld\n", req
, req
->r_tid
);
1242 rb_erase(&req
->r_node
, &osdc
->requests
);
1243 RB_CLEAR_NODE(&req
->r_node
);
1244 osdc
->num_requests
--;
1247 /* make sure the original request isn't in flight. */
1248 ceph_msg_revoke(req
->r_request
);
1250 list_del_init(&req
->r_osd_item
);
1251 maybe_move_osd_to_lru(osdc
, req
->r_osd
);
1252 if (list_empty(&req
->r_linger_osd_item
))
1256 list_del_init(&req
->r_req_lru_item
);
1257 ceph_osdc_put_request(req
);
1259 if (osdc
->num_requests
== 0) {
1260 dout(" no requests, canceling timeout\n");
1261 __cancel_osd_timeout(osdc
);
1266 * Cancel a previously queued request message
1268 static void __cancel_request(struct ceph_osd_request
*req
)
1270 if (req
->r_sent
&& req
->r_osd
) {
1271 ceph_msg_revoke(req
->r_request
);
1276 static void __register_linger_request(struct ceph_osd_client
*osdc
,
1277 struct ceph_osd_request
*req
)
1279 dout("%s %p tid %llu\n", __func__
, req
, req
->r_tid
);
1280 WARN_ON(!req
->r_linger
);
1282 ceph_osdc_get_request(req
);
1283 list_add_tail(&req
->r_linger_item
, &osdc
->req_linger
);
1285 list_add_tail(&req
->r_linger_osd_item
,
1286 &req
->r_osd
->o_linger_requests
);
1289 static void __unregister_linger_request(struct ceph_osd_client
*osdc
,
1290 struct ceph_osd_request
*req
)
1292 WARN_ON(!req
->r_linger
);
1294 if (list_empty(&req
->r_linger_item
)) {
1295 dout("%s %p tid %llu not registered\n", __func__
, req
,
1300 dout("%s %p tid %llu\n", __func__
, req
, req
->r_tid
);
1301 list_del_init(&req
->r_linger_item
);
1304 list_del_init(&req
->r_linger_osd_item
);
1305 maybe_move_osd_to_lru(osdc
, req
->r_osd
);
1306 if (list_empty(&req
->r_osd_item
))
1309 ceph_osdc_put_request(req
);
1312 void ceph_osdc_set_request_linger(struct ceph_osd_client
*osdc
,
1313 struct ceph_osd_request
*req
)
1315 if (!req
->r_linger
) {
1316 dout("set_request_linger %p\n", req
);
1320 EXPORT_SYMBOL(ceph_osdc_set_request_linger
);
1323 * Returns whether a request should be blocked from being sent
1324 * based on the current osdmap and osd_client settings.
1326 * Caller should hold map_sem for read.
1328 static bool __req_should_be_paused(struct ceph_osd_client
*osdc
,
1329 struct ceph_osd_request
*req
)
1331 bool pauserd
= ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSERD
);
1332 bool pausewr
= ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSEWR
) ||
1333 ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_FULL
);
1334 return (req
->r_flags
& CEPH_OSD_FLAG_READ
&& pauserd
) ||
1335 (req
->r_flags
& CEPH_OSD_FLAG_WRITE
&& pausewr
);
1339 * Calculate mapping of a request to a PG. Takes tiering into account.
1341 static int __calc_request_pg(struct ceph_osdmap
*osdmap
,
1342 struct ceph_osd_request
*req
,
1343 struct ceph_pg
*pg_out
)
1345 bool need_check_tiering
;
1347 need_check_tiering
= false;
1348 if (req
->r_target_oloc
.pool
== -1) {
1349 req
->r_target_oloc
= req
->r_base_oloc
; /* struct */
1350 need_check_tiering
= true;
1352 if (req
->r_target_oid
.name_len
== 0) {
1353 ceph_oid_copy(&req
->r_target_oid
, &req
->r_base_oid
);
1354 need_check_tiering
= true;
1357 if (need_check_tiering
&&
1358 (req
->r_flags
& CEPH_OSD_FLAG_IGNORE_OVERLAY
) == 0) {
1359 struct ceph_pg_pool_info
*pi
;
1361 pi
= ceph_pg_pool_by_id(osdmap
, req
->r_target_oloc
.pool
);
1363 if ((req
->r_flags
& CEPH_OSD_FLAG_READ
) &&
1365 req
->r_target_oloc
.pool
= pi
->read_tier
;
1366 if ((req
->r_flags
& CEPH_OSD_FLAG_WRITE
) &&
1367 pi
->write_tier
>= 0)
1368 req
->r_target_oloc
.pool
= pi
->write_tier
;
1370 /* !pi is caught in ceph_oloc_oid_to_pg() */
1373 return ceph_oloc_oid_to_pg(osdmap
, &req
->r_target_oloc
,
1374 &req
->r_target_oid
, pg_out
);
1377 static void __enqueue_request(struct ceph_osd_request
*req
)
1379 struct ceph_osd_client
*osdc
= req
->r_osdc
;
1381 dout("%s %p tid %llu to osd%d\n", __func__
, req
, req
->r_tid
,
1382 req
->r_osd
? req
->r_osd
->o_osd
: -1);
1385 __remove_osd_from_lru(req
->r_osd
);
1386 list_add_tail(&req
->r_osd_item
, &req
->r_osd
->o_requests
);
1387 list_move_tail(&req
->r_req_lru_item
, &osdc
->req_unsent
);
1389 list_move_tail(&req
->r_req_lru_item
, &osdc
->req_notarget
);
1394 * Pick an osd (the first 'up' osd in the pg), allocate the osd struct
1395 * (as needed), and set the request r_osd appropriately. If there is
1396 * no up osd, set r_osd to NULL. Move the request to the appropriate list
1397 * (unsent, homeless) or leave on in-flight lru.
1399 * Return 0 if unchanged, 1 if changed, or negative on error.
1401 * Caller should hold map_sem for read and request_mutex.
1403 static int __map_request(struct ceph_osd_client
*osdc
,
1404 struct ceph_osd_request
*req
, int force_resend
)
1406 struct ceph_pg pgid
;
1407 int acting
[CEPH_PG_MAX_SIZE
];
1412 dout("map_request %p tid %lld\n", req
, req
->r_tid
);
1414 err
= __calc_request_pg(osdc
->osdmap
, req
, &pgid
);
1416 list_move(&req
->r_req_lru_item
, &osdc
->req_notarget
);
1421 num
= ceph_calc_pg_acting(osdc
->osdmap
, pgid
, acting
, &o
);
1425 was_paused
= req
->r_paused
;
1426 req
->r_paused
= __req_should_be_paused(osdc
, req
);
1427 if (was_paused
&& !req
->r_paused
)
1430 if ((!force_resend
&&
1431 req
->r_osd
&& req
->r_osd
->o_osd
== o
&&
1432 req
->r_sent
>= req
->r_osd
->o_incarnation
&&
1433 req
->r_num_pg_osds
== num
&&
1434 memcmp(req
->r_pg_osds
, acting
, sizeof(acting
[0])*num
) == 0) ||
1435 (req
->r_osd
== NULL
&& o
== -1) ||
1437 return 0; /* no change */
1439 dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n",
1440 req
->r_tid
, pgid
.pool
, pgid
.seed
, o
,
1441 req
->r_osd
? req
->r_osd
->o_osd
: -1);
1443 /* record full pg acting set */
1444 memcpy(req
->r_pg_osds
, acting
, sizeof(acting
[0]) * num
);
1445 req
->r_num_pg_osds
= num
;
1448 __cancel_request(req
);
1449 list_del_init(&req
->r_osd_item
);
1450 list_del_init(&req
->r_linger_osd_item
);
1454 req
->r_osd
= __lookup_osd(osdc
, o
);
1455 if (!req
->r_osd
&& o
>= 0) {
1457 req
->r_osd
= create_osd(osdc
, o
);
1459 list_move(&req
->r_req_lru_item
, &osdc
->req_notarget
);
1463 dout("map_request osd %p is osd%d\n", req
->r_osd
, o
);
1464 __insert_osd(osdc
, req
->r_osd
);
1466 ceph_con_open(&req
->r_osd
->o_con
,
1467 CEPH_ENTITY_TYPE_OSD
, o
,
1468 &osdc
->osdmap
->osd_addr
[o
]);
1471 __enqueue_request(req
);
1472 err
= 1; /* osd or pg changed */
1479 * caller should hold map_sem (for read) and request_mutex
1481 static void __send_request(struct ceph_osd_client
*osdc
,
1482 struct ceph_osd_request
*req
)
1486 dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n",
1487 req
, req
->r_tid
, req
->r_osd
->o_osd
, req
->r_flags
,
1488 (unsigned long long)req
->r_pgid
.pool
, req
->r_pgid
.seed
);
1490 /* fill in message content that changes each time we send it */
1491 put_unaligned_le32(osdc
->osdmap
->epoch
, req
->r_request_osdmap_epoch
);
1492 put_unaligned_le32(req
->r_flags
, req
->r_request_flags
);
1493 put_unaligned_le64(req
->r_target_oloc
.pool
, req
->r_request_pool
);
1494 p
= req
->r_request_pgid
;
1495 ceph_encode_64(&p
, req
->r_pgid
.pool
);
1496 ceph_encode_32(&p
, req
->r_pgid
.seed
);
1497 put_unaligned_le64(1, req
->r_request_attempts
); /* FIXME */
1498 memcpy(req
->r_request_reassert_version
, &req
->r_reassert_version
,
1499 sizeof(req
->r_reassert_version
));
1501 req
->r_stamp
= jiffies
;
1502 list_move_tail(&req
->r_req_lru_item
, &osdc
->req_lru
);
1504 ceph_msg_get(req
->r_request
); /* send consumes a ref */
1506 req
->r_sent
= req
->r_osd
->o_incarnation
;
1508 ceph_con_send(&req
->r_osd
->o_con
, req
->r_request
);
1512 * Send any requests in the queue (req_unsent).
1514 static void __send_queued(struct ceph_osd_client
*osdc
)
1516 struct ceph_osd_request
*req
, *tmp
;
1518 dout("__send_queued\n");
1519 list_for_each_entry_safe(req
, tmp
, &osdc
->req_unsent
, r_req_lru_item
)
1520 __send_request(osdc
, req
);
1524 * Caller should hold map_sem for read and request_mutex.
1526 static int __ceph_osdc_start_request(struct ceph_osd_client
*osdc
,
1527 struct ceph_osd_request
*req
,
1532 __register_request(osdc
, req
);
1534 req
->r_got_reply
= 0;
1535 rc
= __map_request(osdc
, req
, 0);
1538 dout("osdc_start_request failed map, "
1539 " will retry %lld\n", req
->r_tid
);
1542 __unregister_request(osdc
, req
);
1547 if (req
->r_osd
== NULL
) {
1548 dout("send_request %p no up osds in pg\n", req
);
1549 ceph_monc_request_next_osdmap(&osdc
->client
->monc
);
1551 __send_queued(osdc
);
1558 * Timeout callback, called every N seconds when 1 or more osd
1559 * requests has been active for more than N seconds. When this
1560 * happens, we ping all OSDs with requests who have timed out to
1561 * ensure any communications channel reset is detected. Reset the
1562 * request timeouts another N seconds in the future as we go.
1563 * Reschedule the timeout event another N seconds in future (unless
1564 * there are no open requests).
1566 static void handle_timeout(struct work_struct
*work
)
1568 struct ceph_osd_client
*osdc
=
1569 container_of(work
, struct ceph_osd_client
, timeout_work
.work
);
1570 struct ceph_osd_request
*req
;
1571 struct ceph_osd
*osd
;
1572 unsigned long keepalive
=
1573 osdc
->client
->options
->osd_keepalive_timeout
* HZ
;
1574 struct list_head slow_osds
;
1576 down_read(&osdc
->map_sem
);
1578 ceph_monc_request_next_osdmap(&osdc
->client
->monc
);
1580 mutex_lock(&osdc
->request_mutex
);
1583 * ping osds that are a bit slow. this ensures that if there
1584 * is a break in the TCP connection we will notice, and reopen
1585 * a connection with that osd (from the fault callback).
1587 INIT_LIST_HEAD(&slow_osds
);
1588 list_for_each_entry(req
, &osdc
->req_lru
, r_req_lru_item
) {
1589 if (time_before(jiffies
, req
->r_stamp
+ keepalive
))
1594 dout(" tid %llu is slow, will send keepalive on osd%d\n",
1595 req
->r_tid
, osd
->o_osd
);
1596 list_move_tail(&osd
->o_keepalive_item
, &slow_osds
);
1598 while (!list_empty(&slow_osds
)) {
1599 osd
= list_entry(slow_osds
.next
, struct ceph_osd
,
1601 list_del_init(&osd
->o_keepalive_item
);
1602 ceph_con_keepalive(&osd
->o_con
);
1605 __schedule_osd_timeout(osdc
);
1606 __send_queued(osdc
);
1607 mutex_unlock(&osdc
->request_mutex
);
1608 up_read(&osdc
->map_sem
);
1611 static void handle_osds_timeout(struct work_struct
*work
)
1613 struct ceph_osd_client
*osdc
=
1614 container_of(work
, struct ceph_osd_client
,
1615 osds_timeout_work
.work
);
1616 unsigned long delay
=
1617 osdc
->client
->options
->osd_idle_ttl
* HZ
>> 2;
1619 dout("osds timeout\n");
1620 down_read(&osdc
->map_sem
);
1621 remove_old_osds(osdc
);
1622 up_read(&osdc
->map_sem
);
1624 schedule_delayed_work(&osdc
->osds_timeout_work
,
1625 round_jiffies_relative(delay
));
1628 static int ceph_oloc_decode(void **p
, void *end
,
1629 struct ceph_object_locator
*oloc
)
1631 u8 struct_v
, struct_cv
;
1636 ceph_decode_need(p
, end
, 1 + 1 + 4, e_inval
);
1637 struct_v
= ceph_decode_8(p
);
1638 struct_cv
= ceph_decode_8(p
);
1640 pr_warn("got v %d < 3 cv %d of ceph_object_locator\n",
1641 struct_v
, struct_cv
);
1644 if (struct_cv
> 6) {
1645 pr_warn("got v %d cv %d > 6 of ceph_object_locator\n",
1646 struct_v
, struct_cv
);
1649 len
= ceph_decode_32(p
);
1650 ceph_decode_need(p
, end
, len
, e_inval
);
1651 struct_end
= *p
+ len
;
1653 oloc
->pool
= ceph_decode_64(p
);
1654 *p
+= 4; /* skip preferred */
1656 len
= ceph_decode_32(p
);
1658 pr_warn("ceph_object_locator::key is set\n");
1662 if (struct_v
>= 5) {
1663 len
= ceph_decode_32(p
);
1665 pr_warn("ceph_object_locator::nspace is set\n");
1670 if (struct_v
>= 6) {
1671 s64 hash
= ceph_decode_64(p
);
1673 pr_warn("ceph_object_locator::hash is set\n");
1688 static int ceph_redirect_decode(void **p
, void *end
,
1689 struct ceph_request_redirect
*redir
)
1691 u8 struct_v
, struct_cv
;
1696 ceph_decode_need(p
, end
, 1 + 1 + 4, e_inval
);
1697 struct_v
= ceph_decode_8(p
);
1698 struct_cv
= ceph_decode_8(p
);
1699 if (struct_cv
> 1) {
1700 pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n",
1701 struct_v
, struct_cv
);
1704 len
= ceph_decode_32(p
);
1705 ceph_decode_need(p
, end
, len
, e_inval
);
1706 struct_end
= *p
+ len
;
1708 ret
= ceph_oloc_decode(p
, end
, &redir
->oloc
);
1712 len
= ceph_decode_32(p
);
1714 pr_warn("ceph_request_redirect::object_name is set\n");
1718 len
= ceph_decode_32(p
);
1719 *p
+= len
; /* skip osd_instructions */
1731 static void complete_request(struct ceph_osd_request
*req
)
1733 complete_all(&req
->r_safe_completion
); /* fsync waiter */
1737 * handle osd op reply. either call the callback if it is specified,
1738 * or do the completion to wake up the waiting thread.
1740 static void handle_reply(struct ceph_osd_client
*osdc
, struct ceph_msg
*msg
,
1741 struct ceph_connection
*con
)
1744 struct ceph_osd_request
*req
;
1745 struct ceph_request_redirect redir
;
1748 unsigned int numops
;
1749 int payload_len
, flags
;
1755 u64 reassert_version
;
1757 int already_completed
;
1761 tid
= le64_to_cpu(msg
->hdr
.tid
);
1762 dout("handle_reply %p tid %llu\n", msg
, tid
);
1764 p
= msg
->front
.iov_base
;
1765 end
= p
+ msg
->front
.iov_len
;
1767 ceph_decode_need(&p
, end
, 4, bad
);
1768 object_len
= ceph_decode_32(&p
);
1769 ceph_decode_need(&p
, end
, object_len
, bad
);
1772 err
= ceph_decode_pgid(&p
, end
, &pg
);
1776 ceph_decode_need(&p
, end
, 8 + 4 + 4 + 8 + 4, bad
);
1777 flags
= ceph_decode_64(&p
);
1778 result
= ceph_decode_32(&p
);
1779 reassert_epoch
= ceph_decode_32(&p
);
1780 reassert_version
= ceph_decode_64(&p
);
1781 osdmap_epoch
= ceph_decode_32(&p
);
1784 down_read(&osdc
->map_sem
);
1785 mutex_lock(&osdc
->request_mutex
);
1786 req
= __lookup_request(osdc
, tid
);
1788 dout("handle_reply tid %llu dne\n", tid
);
1791 ceph_osdc_get_request(req
);
1793 dout("handle_reply %p tid %llu req %p result %d\n", msg
, tid
,
1796 ceph_decode_need(&p
, end
, 4, bad_put
);
1797 numops
= ceph_decode_32(&p
);
1798 if (numops
> CEPH_OSD_MAX_OP
)
1800 if (numops
!= req
->r_num_ops
)
1803 ceph_decode_need(&p
, end
, numops
* sizeof(struct ceph_osd_op
), bad_put
);
1804 for (i
= 0; i
< numops
; i
++) {
1805 struct ceph_osd_op
*op
= p
;
1808 len
= le32_to_cpu(op
->payload_len
);
1809 req
->r_reply_op_len
[i
] = len
;
1810 dout(" op %d has %d bytes\n", i
, len
);
1814 bytes
= le32_to_cpu(msg
->hdr
.data_len
);
1815 if (payload_len
!= bytes
) {
1816 pr_warn("sum of op payload lens %d != data_len %d\n",
1817 payload_len
, bytes
);
1821 ceph_decode_need(&p
, end
, 4 + numops
* 4, bad_put
);
1822 retry_attempt
= ceph_decode_32(&p
);
1823 for (i
= 0; i
< numops
; i
++)
1824 req
->r_reply_op_result
[i
] = ceph_decode_32(&p
);
1826 if (le16_to_cpu(msg
->hdr
.version
) >= 6) {
1827 p
+= 8 + 4; /* skip replay_version */
1828 p
+= 8; /* skip user_version */
1830 err
= ceph_redirect_decode(&p
, end
, &redir
);
1834 redir
.oloc
.pool
= -1;
1837 if (redir
.oloc
.pool
!= -1) {
1838 dout("redirect pool %lld\n", redir
.oloc
.pool
);
1840 __unregister_request(osdc
, req
);
1842 req
->r_target_oloc
= redir
.oloc
; /* struct */
1845 * Start redirect requests with nofail=true. If
1846 * mapping fails, request will end up on the notarget
1847 * list, waiting for the new osdmap (which can take
1848 * a while), even though the original request mapped
1849 * successfully. In the future we might want to follow
1850 * original request's nofail setting here.
1852 err
= __ceph_osdc_start_request(osdc
, req
, true);
1858 already_completed
= req
->r_got_reply
;
1859 if (!req
->r_got_reply
) {
1860 req
->r_result
= result
;
1861 dout("handle_reply result %d bytes %d\n", req
->r_result
,
1863 if (req
->r_result
== 0)
1864 req
->r_result
= bytes
;
1866 /* in case this is a write and we need to replay, */
1867 req
->r_reassert_version
.epoch
= cpu_to_le32(reassert_epoch
);
1868 req
->r_reassert_version
.version
= cpu_to_le64(reassert_version
);
1870 req
->r_got_reply
= 1;
1871 } else if ((flags
& CEPH_OSD_FLAG_ONDISK
) == 0) {
1872 dout("handle_reply tid %llu dup ack\n", tid
);
1876 dout("handle_reply tid %llu flags %d\n", tid
, flags
);
1878 if (req
->r_linger
&& (flags
& CEPH_OSD_FLAG_ONDISK
))
1879 __register_linger_request(osdc
, req
);
1881 /* either this is a read, or we got the safe response */
1883 (flags
& CEPH_OSD_FLAG_ONDISK
) ||
1884 ((flags
& CEPH_OSD_FLAG_WRITE
) == 0))
1885 __unregister_request(osdc
, req
);
1887 mutex_unlock(&osdc
->request_mutex
);
1888 up_read(&osdc
->map_sem
);
1890 if (!already_completed
) {
1891 if (req
->r_unsafe_callback
&&
1892 result
>= 0 && !(flags
& CEPH_OSD_FLAG_ONDISK
))
1893 req
->r_unsafe_callback(req
, true);
1894 if (req
->r_callback
)
1895 req
->r_callback(req
, msg
);
1897 complete_all(&req
->r_completion
);
1900 if (flags
& CEPH_OSD_FLAG_ONDISK
) {
1901 if (req
->r_unsafe_callback
&& already_completed
)
1902 req
->r_unsafe_callback(req
, false);
1903 complete_request(req
);
1907 dout("req=%p req->r_linger=%d\n", req
, req
->r_linger
);
1908 ceph_osdc_put_request(req
);
1911 mutex_unlock(&osdc
->request_mutex
);
1912 up_read(&osdc
->map_sem
);
1916 req
->r_result
= -EIO
;
1917 __unregister_request(osdc
, req
);
1918 if (req
->r_callback
)
1919 req
->r_callback(req
, msg
);
1921 complete_all(&req
->r_completion
);
1922 complete_request(req
);
1923 ceph_osdc_put_request(req
);
1925 mutex_unlock(&osdc
->request_mutex
);
1926 up_read(&osdc
->map_sem
);
1928 pr_err("corrupt osd_op_reply got %d %d\n",
1929 (int)msg
->front
.iov_len
, le32_to_cpu(msg
->hdr
.front_len
));
1933 static void reset_changed_osds(struct ceph_osd_client
*osdc
)
1935 struct rb_node
*p
, *n
;
1937 dout("%s %p\n", __func__
, osdc
);
1938 for (p
= rb_first(&osdc
->osds
); p
; p
= n
) {
1939 struct ceph_osd
*osd
= rb_entry(p
, struct ceph_osd
, o_node
);
1942 if (!ceph_osd_is_up(osdc
->osdmap
, osd
->o_osd
) ||
1943 memcmp(&osd
->o_con
.peer_addr
,
1944 ceph_osd_addr(osdc
->osdmap
,
1946 sizeof(struct ceph_entity_addr
)) != 0)
1947 __reset_osd(osdc
, osd
);
1952 * Requeue requests whose mapping to an OSD has changed. If requests map to
1953 * no osd, request a new map.
1955 * Caller should hold map_sem for read.
1957 static void kick_requests(struct ceph_osd_client
*osdc
, bool force_resend
,
1958 bool force_resend_writes
)
1960 struct ceph_osd_request
*req
, *nreq
;
1964 bool force_resend_req
;
1966 dout("kick_requests %s %s\n", force_resend
? " (force resend)" : "",
1967 force_resend_writes
? " (force resend writes)" : "");
1968 mutex_lock(&osdc
->request_mutex
);
1969 for (p
= rb_first(&osdc
->requests
); p
; ) {
1970 req
= rb_entry(p
, struct ceph_osd_request
, r_node
);
1974 * For linger requests that have not yet been
1975 * registered, move them to the linger list; they'll
1976 * be sent to the osd in the loop below. Unregister
1977 * the request before re-registering it as a linger
1978 * request to ensure the __map_request() below
1979 * will decide it needs to be sent.
1981 if (req
->r_linger
&& list_empty(&req
->r_linger_item
)) {
1982 dout("%p tid %llu restart on osd%d\n",
1984 req
->r_osd
? req
->r_osd
->o_osd
: -1);
1985 ceph_osdc_get_request(req
);
1986 __unregister_request(osdc
, req
);
1987 __register_linger_request(osdc
, req
);
1988 ceph_osdc_put_request(req
);
1992 force_resend_req
= force_resend
||
1993 (force_resend_writes
&&
1994 req
->r_flags
& CEPH_OSD_FLAG_WRITE
);
1995 err
= __map_request(osdc
, req
, force_resend_req
);
1997 continue; /* error */
1998 if (req
->r_osd
== NULL
) {
1999 dout("%p tid %llu maps to no osd\n", req
, req
->r_tid
);
2000 needmap
++; /* request a newer map */
2001 } else if (err
> 0) {
2002 if (!req
->r_linger
) {
2003 dout("%p tid %llu requeued on osd%d\n", req
,
2005 req
->r_osd
? req
->r_osd
->o_osd
: -1);
2006 req
->r_flags
|= CEPH_OSD_FLAG_RETRY
;
2011 list_for_each_entry_safe(req
, nreq
, &osdc
->req_linger
,
2013 dout("linger req=%p req->r_osd=%p\n", req
, req
->r_osd
);
2015 err
= __map_request(osdc
, req
,
2016 force_resend
|| force_resend_writes
);
2017 dout("__map_request returned %d\n", err
);
2019 continue; /* hrm! */
2020 if (req
->r_osd
== NULL
|| err
> 0) {
2021 if (req
->r_osd
== NULL
) {
2022 dout("lingering %p tid %llu maps to no osd\n",
2025 * A homeless lingering request makes
2026 * no sense, as it's job is to keep
2027 * a particular OSD connection open.
2028 * Request a newer map and kick the
2029 * request, knowing that it won't be
2030 * resent until we actually get a map
2031 * that can tell us where to send it.
2036 dout("kicking lingering %p tid %llu osd%d\n", req
,
2037 req
->r_tid
, req
->r_osd
? req
->r_osd
->o_osd
: -1);
2038 __register_request(osdc
, req
);
2039 __unregister_linger_request(osdc
, req
);
2042 reset_changed_osds(osdc
);
2043 mutex_unlock(&osdc
->request_mutex
);
2046 dout("%d requests for down osds, need new map\n", needmap
);
2047 ceph_monc_request_next_osdmap(&osdc
->client
->monc
);
2053 * Process updated osd map.
2055 * The message contains any number of incremental and full maps, normally
2056 * indicating some sort of topology change in the cluster. Kick requests
2057 * off to different OSDs as needed.
2059 void ceph_osdc_handle_map(struct ceph_osd_client
*osdc
, struct ceph_msg
*msg
)
2061 void *p
, *end
, *next
;
2062 u32 nr_maps
, maplen
;
2064 struct ceph_osdmap
*newmap
= NULL
, *oldmap
;
2066 struct ceph_fsid fsid
;
2069 dout("handle_map have %u\n", osdc
->osdmap
? osdc
->osdmap
->epoch
: 0);
2070 p
= msg
->front
.iov_base
;
2071 end
= p
+ msg
->front
.iov_len
;
2074 ceph_decode_need(&p
, end
, sizeof(fsid
), bad
);
2075 ceph_decode_copy(&p
, &fsid
, sizeof(fsid
));
2076 if (ceph_check_fsid(osdc
->client
, &fsid
) < 0)
2079 down_write(&osdc
->map_sem
);
2081 was_full
= ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_FULL
);
2083 /* incremental maps */
2084 ceph_decode_32_safe(&p
, end
, nr_maps
, bad
);
2085 dout(" %d inc maps\n", nr_maps
);
2086 while (nr_maps
> 0) {
2087 ceph_decode_need(&p
, end
, 2*sizeof(u32
), bad
);
2088 epoch
= ceph_decode_32(&p
);
2089 maplen
= ceph_decode_32(&p
);
2090 ceph_decode_need(&p
, end
, maplen
, bad
);
2092 if (osdc
->osdmap
&& osdc
->osdmap
->epoch
+1 == epoch
) {
2093 dout("applying incremental map %u len %d\n",
2095 newmap
= osdmap_apply_incremental(&p
, next
,
2097 &osdc
->client
->msgr
);
2098 if (IS_ERR(newmap
)) {
2099 err
= PTR_ERR(newmap
);
2103 if (newmap
!= osdc
->osdmap
) {
2104 ceph_osdmap_destroy(osdc
->osdmap
);
2105 osdc
->osdmap
= newmap
;
2107 was_full
= was_full
||
2108 ceph_osdmap_flag(osdc
->osdmap
,
2110 kick_requests(osdc
, 0, was_full
);
2112 dout("ignoring incremental map %u len %d\n",
2122 ceph_decode_32_safe(&p
, end
, nr_maps
, bad
);
2123 dout(" %d full maps\n", nr_maps
);
2125 ceph_decode_need(&p
, end
, 2*sizeof(u32
), bad
);
2126 epoch
= ceph_decode_32(&p
);
2127 maplen
= ceph_decode_32(&p
);
2128 ceph_decode_need(&p
, end
, maplen
, bad
);
2130 dout("skipping non-latest full map %u len %d\n",
2132 } else if (osdc
->osdmap
&& osdc
->osdmap
->epoch
>= epoch
) {
2133 dout("skipping full map %u len %d, "
2134 "older than our %u\n", epoch
, maplen
,
2135 osdc
->osdmap
->epoch
);
2137 int skipped_map
= 0;
2139 dout("taking full map %u len %d\n", epoch
, maplen
);
2140 newmap
= ceph_osdmap_decode(&p
, p
+maplen
);
2141 if (IS_ERR(newmap
)) {
2142 err
= PTR_ERR(newmap
);
2146 oldmap
= osdc
->osdmap
;
2147 osdc
->osdmap
= newmap
;
2149 if (oldmap
->epoch
+ 1 < newmap
->epoch
)
2151 ceph_osdmap_destroy(oldmap
);
2153 was_full
= was_full
||
2154 ceph_osdmap_flag(osdc
->osdmap
,
2156 kick_requests(osdc
, skipped_map
, was_full
);
2165 downgrade_write(&osdc
->map_sem
);
2166 ceph_monc_got_osdmap(&osdc
->client
->monc
, osdc
->osdmap
->epoch
);
2169 * subscribe to subsequent osdmap updates if full to ensure
2170 * we find out when we are no longer full and stop returning
2173 if (ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_FULL
) ||
2174 ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSERD
) ||
2175 ceph_osdmap_flag(osdc
->osdmap
, CEPH_OSDMAP_PAUSEWR
))
2176 ceph_monc_request_next_osdmap(&osdc
->client
->monc
);
2178 mutex_lock(&osdc
->request_mutex
);
2179 __send_queued(osdc
);
2180 mutex_unlock(&osdc
->request_mutex
);
2181 up_read(&osdc
->map_sem
);
2182 wake_up_all(&osdc
->client
->auth_wq
);
2186 pr_err("osdc handle_map corrupt msg\n");
2188 up_write(&osdc
->map_sem
);
2192 * watch/notify callback event infrastructure
2194 * These callbacks are used both for watch and notify operations.
2196 static void __release_event(struct kref
*kref
)
2198 struct ceph_osd_event
*event
=
2199 container_of(kref
, struct ceph_osd_event
, kref
);
2201 dout("__release_event %p\n", event
);
2205 static void get_event(struct ceph_osd_event
*event
)
2207 kref_get(&event
->kref
);
2210 void ceph_osdc_put_event(struct ceph_osd_event
*event
)
2212 kref_put(&event
->kref
, __release_event
);
2214 EXPORT_SYMBOL(ceph_osdc_put_event
);
2216 static void __insert_event(struct ceph_osd_client
*osdc
,
2217 struct ceph_osd_event
*new)
2219 struct rb_node
**p
= &osdc
->event_tree
.rb_node
;
2220 struct rb_node
*parent
= NULL
;
2221 struct ceph_osd_event
*event
= NULL
;
2225 event
= rb_entry(parent
, struct ceph_osd_event
, node
);
2226 if (new->cookie
< event
->cookie
)
2228 else if (new->cookie
> event
->cookie
)
2229 p
= &(*p
)->rb_right
;
2234 rb_link_node(&new->node
, parent
, p
);
2235 rb_insert_color(&new->node
, &osdc
->event_tree
);
2238 static struct ceph_osd_event
*__find_event(struct ceph_osd_client
*osdc
,
2241 struct rb_node
**p
= &osdc
->event_tree
.rb_node
;
2242 struct rb_node
*parent
= NULL
;
2243 struct ceph_osd_event
*event
= NULL
;
2247 event
= rb_entry(parent
, struct ceph_osd_event
, node
);
2248 if (cookie
< event
->cookie
)
2250 else if (cookie
> event
->cookie
)
2251 p
= &(*p
)->rb_right
;
2258 static void __remove_event(struct ceph_osd_event
*event
)
2260 struct ceph_osd_client
*osdc
= event
->osdc
;
2262 if (!RB_EMPTY_NODE(&event
->node
)) {
2263 dout("__remove_event removed %p\n", event
);
2264 rb_erase(&event
->node
, &osdc
->event_tree
);
2265 ceph_osdc_put_event(event
);
2267 dout("__remove_event didn't remove %p\n", event
);
2271 int ceph_osdc_create_event(struct ceph_osd_client
*osdc
,
2272 void (*event_cb
)(u64
, u64
, u8
, void *),
2273 void *data
, struct ceph_osd_event
**pevent
)
2275 struct ceph_osd_event
*event
;
2277 event
= kmalloc(sizeof(*event
), GFP_NOIO
);
2281 dout("create_event %p\n", event
);
2282 event
->cb
= event_cb
;
2283 event
->one_shot
= 0;
2286 INIT_LIST_HEAD(&event
->osd_node
);
2287 RB_CLEAR_NODE(&event
->node
);
2288 kref_init(&event
->kref
); /* one ref for us */
2289 kref_get(&event
->kref
); /* one ref for the caller */
2291 spin_lock(&osdc
->event_lock
);
2292 event
->cookie
= ++osdc
->event_count
;
2293 __insert_event(osdc
, event
);
2294 spin_unlock(&osdc
->event_lock
);
2299 EXPORT_SYMBOL(ceph_osdc_create_event
);
2301 void ceph_osdc_cancel_event(struct ceph_osd_event
*event
)
2303 struct ceph_osd_client
*osdc
= event
->osdc
;
2305 dout("cancel_event %p\n", event
);
2306 spin_lock(&osdc
->event_lock
);
2307 __remove_event(event
);
2308 spin_unlock(&osdc
->event_lock
);
2309 ceph_osdc_put_event(event
); /* caller's */
2311 EXPORT_SYMBOL(ceph_osdc_cancel_event
);
2314 static void do_event_work(struct work_struct
*work
)
2316 struct ceph_osd_event_work
*event_work
=
2317 container_of(work
, struct ceph_osd_event_work
, work
);
2318 struct ceph_osd_event
*event
= event_work
->event
;
2319 u64 ver
= event_work
->ver
;
2320 u64 notify_id
= event_work
->notify_id
;
2321 u8 opcode
= event_work
->opcode
;
2323 dout("do_event_work completing %p\n", event
);
2324 event
->cb(ver
, notify_id
, opcode
, event
->data
);
2325 dout("do_event_work completed %p\n", event
);
2326 ceph_osdc_put_event(event
);
2332 * Process osd watch notifications
2334 static void handle_watch_notify(struct ceph_osd_client
*osdc
,
2335 struct ceph_msg
*msg
)
2339 u64 cookie
, ver
, notify_id
;
2341 struct ceph_osd_event
*event
;
2342 struct ceph_osd_event_work
*event_work
;
2344 p
= msg
->front
.iov_base
;
2345 end
= p
+ msg
->front
.iov_len
;
2347 ceph_decode_8_safe(&p
, end
, proto_ver
, bad
);
2348 ceph_decode_8_safe(&p
, end
, opcode
, bad
);
2349 ceph_decode_64_safe(&p
, end
, cookie
, bad
);
2350 ceph_decode_64_safe(&p
, end
, ver
, bad
);
2351 ceph_decode_64_safe(&p
, end
, notify_id
, bad
);
2353 spin_lock(&osdc
->event_lock
);
2354 event
= __find_event(osdc
, cookie
);
2356 BUG_ON(event
->one_shot
);
2359 spin_unlock(&osdc
->event_lock
);
2360 dout("handle_watch_notify cookie %lld ver %lld event %p\n",
2361 cookie
, ver
, event
);
2363 event_work
= kmalloc(sizeof(*event_work
), GFP_NOIO
);
2365 pr_err("couldn't allocate event_work\n");
2366 ceph_osdc_put_event(event
);
2369 INIT_WORK(&event_work
->work
, do_event_work
);
2370 event_work
->event
= event
;
2371 event_work
->ver
= ver
;
2372 event_work
->notify_id
= notify_id
;
2373 event_work
->opcode
= opcode
;
2375 queue_work(osdc
->notify_wq
, &event_work
->work
);
2381 pr_err("osdc handle_watch_notify corrupt msg\n");
2385 * build new request AND message
2388 void ceph_osdc_build_request(struct ceph_osd_request
*req
, u64 off
,
2389 struct ceph_snap_context
*snapc
, u64 snap_id
,
2390 struct timespec
*mtime
)
2392 struct ceph_msg
*msg
= req
->r_request
;
2395 int flags
= req
->r_flags
;
2399 req
->r_snapid
= snap_id
;
2400 req
->r_snapc
= ceph_get_snap_context(snapc
);
2402 /* encode request */
2403 msg
->hdr
.version
= cpu_to_le16(4);
2405 p
= msg
->front
.iov_base
;
2406 ceph_encode_32(&p
, 1); /* client_inc is always 1 */
2407 req
->r_request_osdmap_epoch
= p
;
2409 req
->r_request_flags
= p
;
2411 if (req
->r_flags
& CEPH_OSD_FLAG_WRITE
)
2412 ceph_encode_timespec(p
, mtime
);
2413 p
+= sizeof(struct ceph_timespec
);
2414 req
->r_request_reassert_version
= p
;
2415 p
+= sizeof(struct ceph_eversion
); /* will get filled in */
2418 ceph_encode_8(&p
, 4);
2419 ceph_encode_8(&p
, 4);
2420 ceph_encode_32(&p
, 8 + 4 + 4);
2421 req
->r_request_pool
= p
;
2423 ceph_encode_32(&p
, -1); /* preferred */
2424 ceph_encode_32(&p
, 0); /* key len */
2426 ceph_encode_8(&p
, 1);
2427 req
->r_request_pgid
= p
;
2429 ceph_encode_32(&p
, -1); /* preferred */
2432 ceph_encode_32(&p
, req
->r_base_oid
.name_len
);
2433 memcpy(p
, req
->r_base_oid
.name
, req
->r_base_oid
.name_len
);
2434 dout("oid '%.*s' len %d\n", req
->r_base_oid
.name_len
,
2435 req
->r_base_oid
.name
, req
->r_base_oid
.name_len
);
2436 p
+= req
->r_base_oid
.name_len
;
2438 /* ops--can imply data */
2439 ceph_encode_16(&p
, (u16
)req
->r_num_ops
);
2441 for (i
= 0; i
< req
->r_num_ops
; i
++) {
2442 data_len
+= osd_req_encode_op(req
, p
, i
);
2443 p
+= sizeof(struct ceph_osd_op
);
2447 ceph_encode_64(&p
, req
->r_snapid
);
2448 ceph_encode_64(&p
, req
->r_snapc
? req
->r_snapc
->seq
: 0);
2449 ceph_encode_32(&p
, req
->r_snapc
? req
->r_snapc
->num_snaps
: 0);
2451 for (i
= 0; i
< snapc
->num_snaps
; i
++) {
2452 ceph_encode_64(&p
, req
->r_snapc
->snaps
[i
]);
2456 req
->r_request_attempts
= p
;
2460 if (flags
& CEPH_OSD_FLAG_WRITE
) {
2464 * The header "data_off" is a hint to the receiver
2465 * allowing it to align received data into its
2466 * buffers such that there's no need to re-copy
2467 * it before writing it to disk (direct I/O).
2469 data_off
= (u16
) (off
& 0xffff);
2470 req
->r_request
->hdr
.data_off
= cpu_to_le16(data_off
);
2472 req
->r_request
->hdr
.data_len
= cpu_to_le32(data_len
);
2474 BUG_ON(p
> msg
->front
.iov_base
+ msg
->front
.iov_len
);
2475 msg_size
= p
- msg
->front
.iov_base
;
2476 msg
->front
.iov_len
= msg_size
;
2477 msg
->hdr
.front_len
= cpu_to_le32(msg_size
);
2479 dout("build_request msg_size was %d\n", (int)msg_size
);
2481 EXPORT_SYMBOL(ceph_osdc_build_request
);
2484 * Register request, send initial attempt.
2486 int ceph_osdc_start_request(struct ceph_osd_client
*osdc
,
2487 struct ceph_osd_request
*req
,
2492 down_read(&osdc
->map_sem
);
2493 mutex_lock(&osdc
->request_mutex
);
2495 rc
= __ceph_osdc_start_request(osdc
, req
, nofail
);
2497 mutex_unlock(&osdc
->request_mutex
);
2498 up_read(&osdc
->map_sem
);
2502 EXPORT_SYMBOL(ceph_osdc_start_request
);
2505 * Unregister a registered request. The request is not completed (i.e.
2506 * no callbacks or wakeups) - higher layers are supposed to know what
2507 * they are canceling.
2509 void ceph_osdc_cancel_request(struct ceph_osd_request
*req
)
2511 struct ceph_osd_client
*osdc
= req
->r_osdc
;
2513 mutex_lock(&osdc
->request_mutex
);
2515 __unregister_linger_request(osdc
, req
);
2516 __unregister_request(osdc
, req
);
2517 mutex_unlock(&osdc
->request_mutex
);
2519 dout("%s %p tid %llu canceled\n", __func__
, req
, req
->r_tid
);
2521 EXPORT_SYMBOL(ceph_osdc_cancel_request
);
2524 * wait for a request to complete
2526 int ceph_osdc_wait_request(struct ceph_osd_client
*osdc
,
2527 struct ceph_osd_request
*req
)
2531 dout("%s %p tid %llu\n", __func__
, req
, req
->r_tid
);
2533 rc
= wait_for_completion_interruptible(&req
->r_completion
);
2535 dout("%s %p tid %llu interrupted\n", __func__
, req
, req
->r_tid
);
2536 ceph_osdc_cancel_request(req
);
2537 complete_request(req
);
2541 dout("%s %p tid %llu result %d\n", __func__
, req
, req
->r_tid
,
2543 return req
->r_result
;
2545 EXPORT_SYMBOL(ceph_osdc_wait_request
);
2548 * sync - wait for all in-flight requests to flush. avoid starvation.
2550 void ceph_osdc_sync(struct ceph_osd_client
*osdc
)
2552 struct ceph_osd_request
*req
;
2553 u64 last_tid
, next_tid
= 0;
2555 mutex_lock(&osdc
->request_mutex
);
2556 last_tid
= osdc
->last_tid
;
2558 req
= __lookup_request_ge(osdc
, next_tid
);
2561 if (req
->r_tid
> last_tid
)
2564 next_tid
= req
->r_tid
+ 1;
2565 if ((req
->r_flags
& CEPH_OSD_FLAG_WRITE
) == 0)
2568 ceph_osdc_get_request(req
);
2569 mutex_unlock(&osdc
->request_mutex
);
2570 dout("sync waiting on tid %llu (last is %llu)\n",
2571 req
->r_tid
, last_tid
);
2572 wait_for_completion(&req
->r_safe_completion
);
2573 mutex_lock(&osdc
->request_mutex
);
2574 ceph_osdc_put_request(req
);
2576 mutex_unlock(&osdc
->request_mutex
);
2577 dout("sync done (thru tid %llu)\n", last_tid
);
2579 EXPORT_SYMBOL(ceph_osdc_sync
);
2582 * Call all pending notify callbacks - for use after a watch is
2583 * unregistered, to make sure no more callbacks for it will be invoked
2585 void ceph_osdc_flush_notifies(struct ceph_osd_client
*osdc
)
2587 flush_workqueue(osdc
->notify_wq
);
2589 EXPORT_SYMBOL(ceph_osdc_flush_notifies
);
2595 int ceph_osdc_init(struct ceph_osd_client
*osdc
, struct ceph_client
*client
)
2600 osdc
->client
= client
;
2601 osdc
->osdmap
= NULL
;
2602 init_rwsem(&osdc
->map_sem
);
2603 init_completion(&osdc
->map_waiters
);
2604 osdc
->last_requested_map
= 0;
2605 mutex_init(&osdc
->request_mutex
);
2607 osdc
->osds
= RB_ROOT
;
2608 INIT_LIST_HEAD(&osdc
->osd_lru
);
2609 osdc
->requests
= RB_ROOT
;
2610 INIT_LIST_HEAD(&osdc
->req_lru
);
2611 INIT_LIST_HEAD(&osdc
->req_unsent
);
2612 INIT_LIST_HEAD(&osdc
->req_notarget
);
2613 INIT_LIST_HEAD(&osdc
->req_linger
);
2614 osdc
->num_requests
= 0;
2615 INIT_DELAYED_WORK(&osdc
->timeout_work
, handle_timeout
);
2616 INIT_DELAYED_WORK(&osdc
->osds_timeout_work
, handle_osds_timeout
);
2617 spin_lock_init(&osdc
->event_lock
);
2618 osdc
->event_tree
= RB_ROOT
;
2619 osdc
->event_count
= 0;
2621 schedule_delayed_work(&osdc
->osds_timeout_work
,
2622 round_jiffies_relative(osdc
->client
->options
->osd_idle_ttl
* HZ
));
2625 osdc
->req_mempool
= mempool_create_kmalloc_pool(10,
2626 sizeof(struct ceph_osd_request
));
2627 if (!osdc
->req_mempool
)
2630 err
= ceph_msgpool_init(&osdc
->msgpool_op
, CEPH_MSG_OSD_OP
,
2631 OSD_OP_FRONT_LEN
, 10, true,
2635 err
= ceph_msgpool_init(&osdc
->msgpool_op_reply
, CEPH_MSG_OSD_OPREPLY
,
2636 OSD_OPREPLY_FRONT_LEN
, 10, true,
2642 osdc
->notify_wq
= create_singlethread_workqueue("ceph-watch-notify");
2643 if (!osdc
->notify_wq
)
2644 goto out_msgpool_reply
;
2649 ceph_msgpool_destroy(&osdc
->msgpool_op_reply
);
2651 ceph_msgpool_destroy(&osdc
->msgpool_op
);
2653 mempool_destroy(osdc
->req_mempool
);
2658 void ceph_osdc_stop(struct ceph_osd_client
*osdc
)
2660 flush_workqueue(osdc
->notify_wq
);
2661 destroy_workqueue(osdc
->notify_wq
);
2662 cancel_delayed_work_sync(&osdc
->timeout_work
);
2663 cancel_delayed_work_sync(&osdc
->osds_timeout_work
);
2665 ceph_osdmap_destroy(osdc
->osdmap
);
2666 osdc
->osdmap
= NULL
;
2668 remove_all_osds(osdc
);
2669 mempool_destroy(osdc
->req_mempool
);
2670 ceph_msgpool_destroy(&osdc
->msgpool_op
);
2671 ceph_msgpool_destroy(&osdc
->msgpool_op_reply
);
2675 * Read some contiguous pages. If we cross a stripe boundary, shorten
2676 * *plen. Return number of bytes read, or error.
2678 int ceph_osdc_readpages(struct ceph_osd_client
*osdc
,
2679 struct ceph_vino vino
, struct ceph_file_layout
*layout
,
2681 u32 truncate_seq
, u64 truncate_size
,
2682 struct page
**pages
, int num_pages
, int page_align
)
2684 struct ceph_osd_request
*req
;
2687 dout("readpages on ino %llx.%llx on %llu~%llu\n", vino
.ino
,
2688 vino
.snap
, off
, *plen
);
2689 req
= ceph_osdc_new_request(osdc
, layout
, vino
, off
, plen
, 0, 1,
2690 CEPH_OSD_OP_READ
, CEPH_OSD_FLAG_READ
,
2691 NULL
, truncate_seq
, truncate_size
,
2694 return PTR_ERR(req
);
2696 /* it may be a short read due to an object boundary */
2698 osd_req_op_extent_osd_data_pages(req
, 0,
2699 pages
, *plen
, page_align
, false, false);
2701 dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n",
2702 off
, *plen
, *plen
, page_align
);
2704 ceph_osdc_build_request(req
, off
, NULL
, vino
.snap
, NULL
);
2706 rc
= ceph_osdc_start_request(osdc
, req
, false);
2708 rc
= ceph_osdc_wait_request(osdc
, req
);
2710 ceph_osdc_put_request(req
);
2711 dout("readpages result %d\n", rc
);
2714 EXPORT_SYMBOL(ceph_osdc_readpages
);
2717 * do a synchronous write on N pages
2719 int ceph_osdc_writepages(struct ceph_osd_client
*osdc
, struct ceph_vino vino
,
2720 struct ceph_file_layout
*layout
,
2721 struct ceph_snap_context
*snapc
,
2723 u32 truncate_seq
, u64 truncate_size
,
2724 struct timespec
*mtime
,
2725 struct page
**pages
, int num_pages
)
2727 struct ceph_osd_request
*req
;
2729 int page_align
= off
& ~PAGE_MASK
;
2731 BUG_ON(vino
.snap
!= CEPH_NOSNAP
); /* snapshots aren't writeable */
2732 req
= ceph_osdc_new_request(osdc
, layout
, vino
, off
, &len
, 0, 1,
2734 CEPH_OSD_FLAG_ONDISK
| CEPH_OSD_FLAG_WRITE
,
2735 snapc
, truncate_seq
, truncate_size
,
2738 return PTR_ERR(req
);
2740 /* it may be a short write due to an object boundary */
2741 osd_req_op_extent_osd_data_pages(req
, 0, pages
, len
, page_align
,
2743 dout("writepages %llu~%llu (%llu bytes)\n", off
, len
, len
);
2745 ceph_osdc_build_request(req
, off
, snapc
, CEPH_NOSNAP
, mtime
);
2747 rc
= ceph_osdc_start_request(osdc
, req
, true);
2749 rc
= ceph_osdc_wait_request(osdc
, req
);
2751 ceph_osdc_put_request(req
);
2754 dout("writepages result %d\n", rc
);
2757 EXPORT_SYMBOL(ceph_osdc_writepages
);
2759 int ceph_osdc_setup(void)
2761 BUG_ON(ceph_osd_request_cache
);
2762 ceph_osd_request_cache
= kmem_cache_create("ceph_osd_request",
2763 sizeof (struct ceph_osd_request
),
2764 __alignof__(struct ceph_osd_request
),
2767 return ceph_osd_request_cache
? 0 : -ENOMEM
;
2769 EXPORT_SYMBOL(ceph_osdc_setup
);
2771 void ceph_osdc_cleanup(void)
2773 BUG_ON(!ceph_osd_request_cache
);
2774 kmem_cache_destroy(ceph_osd_request_cache
);
2775 ceph_osd_request_cache
= NULL
;
2777 EXPORT_SYMBOL(ceph_osdc_cleanup
);
2780 * handle incoming message
2782 static void dispatch(struct ceph_connection
*con
, struct ceph_msg
*msg
)
2784 struct ceph_osd
*osd
= con
->private;
2785 struct ceph_osd_client
*osdc
;
2786 int type
= le16_to_cpu(msg
->hdr
.type
);
2793 case CEPH_MSG_OSD_MAP
:
2794 ceph_osdc_handle_map(osdc
, msg
);
2796 case CEPH_MSG_OSD_OPREPLY
:
2797 handle_reply(osdc
, msg
, con
);
2799 case CEPH_MSG_WATCH_NOTIFY
:
2800 handle_watch_notify(osdc
, msg
);
2804 pr_err("received unknown message type %d %s\n", type
,
2805 ceph_msg_type_name(type
));
2812 * lookup and return message for incoming reply. set up reply message
2815 static struct ceph_msg
*get_reply(struct ceph_connection
*con
,
2816 struct ceph_msg_header
*hdr
,
2819 struct ceph_osd
*osd
= con
->private;
2820 struct ceph_osd_client
*osdc
= osd
->o_osdc
;
2822 struct ceph_osd_request
*req
;
2823 int front_len
= le32_to_cpu(hdr
->front_len
);
2824 int data_len
= le32_to_cpu(hdr
->data_len
);
2827 tid
= le64_to_cpu(hdr
->tid
);
2828 mutex_lock(&osdc
->request_mutex
);
2829 req
= __lookup_request(osdc
, tid
);
2833 dout("get_reply unknown tid %llu from osd%d\n", tid
,
2838 if (req
->r_reply
->con
)
2839 dout("%s revoking msg %p from old con %p\n", __func__
,
2840 req
->r_reply
, req
->r_reply
->con
);
2841 ceph_msg_revoke_incoming(req
->r_reply
);
2843 if (front_len
> req
->r_reply
->front_alloc_len
) {
2844 pr_warn("get_reply front %d > preallocated %d (%u#%llu)\n",
2845 front_len
, req
->r_reply
->front_alloc_len
,
2846 (unsigned int)con
->peer_name
.type
,
2847 le64_to_cpu(con
->peer_name
.num
));
2848 m
= ceph_msg_new(CEPH_MSG_OSD_OPREPLY
, front_len
, GFP_NOFS
,
2852 ceph_msg_put(req
->r_reply
);
2855 m
= ceph_msg_get(req
->r_reply
);
2858 struct ceph_osd_data
*osd_data
;
2861 * XXX This is assuming there is only one op containing
2862 * XXX page data. Probably OK for reads, but this
2863 * XXX ought to be done more generally.
2865 osd_data
= osd_req_op_extent_osd_data(req
, 0);
2866 if (osd_data
->type
== CEPH_OSD_DATA_TYPE_PAGES
) {
2867 if (osd_data
->pages
&&
2868 unlikely(osd_data
->length
< data_len
)) {
2870 pr_warn("tid %lld reply has %d bytes we had only %llu bytes ready\n",
2871 tid
, data_len
, osd_data
->length
);
2880 dout("get_reply tid %lld %p\n", tid
, m
);
2883 mutex_unlock(&osdc
->request_mutex
);
2888 static struct ceph_msg
*alloc_msg(struct ceph_connection
*con
,
2889 struct ceph_msg_header
*hdr
,
2892 struct ceph_osd
*osd
= con
->private;
2893 int type
= le16_to_cpu(hdr
->type
);
2894 int front
= le32_to_cpu(hdr
->front_len
);
2898 case CEPH_MSG_OSD_MAP
:
2899 case CEPH_MSG_WATCH_NOTIFY
:
2900 return ceph_msg_new(type
, front
, GFP_NOFS
, false);
2901 case CEPH_MSG_OSD_OPREPLY
:
2902 return get_reply(con
, hdr
, skip
);
2904 pr_info("alloc_msg unexpected msg type %d from osd%d\n", type
,
2912 * Wrappers to refcount containing ceph_osd struct
2914 static struct ceph_connection
*get_osd_con(struct ceph_connection
*con
)
2916 struct ceph_osd
*osd
= con
->private;
2922 static void put_osd_con(struct ceph_connection
*con
)
2924 struct ceph_osd
*osd
= con
->private;
2932 * Note: returned pointer is the address of a structure that's
2933 * managed separately. Caller must *not* attempt to free it.
2935 static struct ceph_auth_handshake
*get_authorizer(struct ceph_connection
*con
,
2936 int *proto
, int force_new
)
2938 struct ceph_osd
*o
= con
->private;
2939 struct ceph_osd_client
*osdc
= o
->o_osdc
;
2940 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
2941 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
2943 if (force_new
&& auth
->authorizer
) {
2944 ceph_auth_destroy_authorizer(ac
, auth
->authorizer
);
2945 auth
->authorizer
= NULL
;
2947 if (!auth
->authorizer
) {
2948 int ret
= ceph_auth_create_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
,
2951 return ERR_PTR(ret
);
2953 int ret
= ceph_auth_update_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
,
2956 return ERR_PTR(ret
);
2958 *proto
= ac
->protocol
;
2964 static int verify_authorizer_reply(struct ceph_connection
*con
, int len
)
2966 struct ceph_osd
*o
= con
->private;
2967 struct ceph_osd_client
*osdc
= o
->o_osdc
;
2968 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
2970 return ceph_auth_verify_authorizer_reply(ac
, o
->o_auth
.authorizer
, len
);
2973 static int invalidate_authorizer(struct ceph_connection
*con
)
2975 struct ceph_osd
*o
= con
->private;
2976 struct ceph_osd_client
*osdc
= o
->o_osdc
;
2977 struct ceph_auth_client
*ac
= osdc
->client
->monc
.auth
;
2979 ceph_auth_invalidate_authorizer(ac
, CEPH_ENTITY_TYPE_OSD
);
2980 return ceph_monc_validate_auth(&osdc
->client
->monc
);
2983 static int sign_message(struct ceph_connection
*con
, struct ceph_msg
*msg
)
2985 struct ceph_osd
*o
= con
->private;
2986 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
2987 return ceph_auth_sign_message(auth
, msg
);
2990 static int check_message_signature(struct ceph_connection
*con
, struct ceph_msg
*msg
)
2992 struct ceph_osd
*o
= con
->private;
2993 struct ceph_auth_handshake
*auth
= &o
->o_auth
;
2994 return ceph_auth_check_message_signature(auth
, msg
);
2997 static const struct ceph_connection_operations osd_con_ops
= {
3000 .dispatch
= dispatch
,
3001 .get_authorizer
= get_authorizer
,
3002 .verify_authorizer_reply
= verify_authorizer_reply
,
3003 .invalidate_authorizer
= invalidate_authorizer
,
3004 .alloc_msg
= alloc_msg
,
3005 .sign_message
= sign_message
,
3006 .check_message_signature
= check_message_signature
,