1 #include <linux/ceph/ceph_debug.h>
3 #include <linux/module.h>
5 #include <linux/highmem.h>
7 #include <linux/pagemap.h>
8 #include <linux/slab.h>
9 #include <linux/uaccess.h>
11 #include <linux/bio.h>
14 #include <linux/ceph/libceph.h>
15 #include <linux/ceph/osd_client.h>
16 #include <linux/ceph/messenger.h>
17 #include <linux/ceph/decode.h>
18 #include <linux/ceph/auth.h>
19 #include <linux/ceph/pagelist.h>
21 #define OSD_OP_FRONT_LEN 4096
22 #define OSD_OPREPLY_FRONT_LEN 512
24 static const struct ceph_connection_operations osd_con_ops;
26 static void __send_queued(struct ceph_osd_client *osdc);
27 static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd);
28 static void __register_request(struct ceph_osd_client *osdc,
29 struct ceph_osd_request *req);
30 static void __unregister_linger_request(struct ceph_osd_client *osdc,
31 struct ceph_osd_request *req);
32 static void __send_request(struct ceph_osd_client *osdc,
33 struct ceph_osd_request *req);
36 * Implement client access to distributed object storage cluster.
38 * All data objects are stored within a cluster/cloud of OSDs, or
39 * "object storage devices." (Note that Ceph OSDs have _nothing_ to
40 * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply
41 * remote daemons serving up and coordinating consistent and safe
44 * Cluster membership and the mapping of data objects onto storage devices
45 * are described by the osd map.
47 * We keep track of pending OSD requests (read, write), resubmit
48 * requests to different OSDs when the cluster topology/data layout
49 * change, or retry the affected requests when the communications
50 * channel with an OSD is reset.
54 * calculate the mapping of a file extent onto an object, and fill out the
55 * request accordingly. shorten extent as necessary if it crosses an
58 * fill osd op in request message.
60 static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen,
61 u64 *objnum, u64 *objoff, u64 *objlen)
67 r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum,
71 if (*objlen < orig_len) {
73 dout(" skipping last %llu, final file extent %llu~%llu\n",
74 orig_len - *plen, off, *plen);
77 dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen);
82 static void ceph_osd_data_init(struct ceph_osd_data *osd_data)
84 memset(osd_data, 0, sizeof (*osd_data));
85 osd_data->type = CEPH_OSD_DATA_TYPE_NONE;
88 void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data,
89 struct page **pages, u64 length, u32 alignment,
90 bool pages_from_pool, bool own_pages)
92 osd_data->type = CEPH_OSD_DATA_TYPE_PAGES;
93 osd_data->pages = pages;
94 osd_data->length = length;
95 osd_data->alignment = alignment;
96 osd_data->pages_from_pool = pages_from_pool;
97 osd_data->own_pages = own_pages;
99 EXPORT_SYMBOL(ceph_osd_data_pages_init);
101 void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data,
102 struct ceph_pagelist *pagelist)
104 osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST;
105 osd_data->pagelist = pagelist;
107 EXPORT_SYMBOL(ceph_osd_data_pagelist_init);
110 void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data,
111 struct bio *bio, size_t bio_length)
113 osd_data->type = CEPH_OSD_DATA_TYPE_BIO;
115 osd_data->bio_length = bio_length;
117 EXPORT_SYMBOL(ceph_osd_data_bio_init);
118 #endif /* CONFIG_BLOCK */
120 static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data)
122 switch (osd_data->type) {
123 case CEPH_OSD_DATA_TYPE_NONE:
125 case CEPH_OSD_DATA_TYPE_PAGES:
126 return osd_data->length;
127 case CEPH_OSD_DATA_TYPE_PAGELIST:
128 return (u64)osd_data->pagelist->length;
130 case CEPH_OSD_DATA_TYPE_BIO:
131 return (u64)osd_data->bio_length;
132 #endif /* CONFIG_BLOCK */
134 WARN(true, "unrecognized data type %d\n", (int)osd_data->type);
139 static void ceph_osd_data_release(struct ceph_osd_data *osd_data)
141 if (osd_data->type != CEPH_OSD_DATA_TYPE_PAGES)
144 if (osd_data->own_pages) {
147 num_pages = calc_pages_for((u64)osd_data->alignment,
148 (u64)osd_data->length);
149 ceph_release_page_vector(osd_data->pages, num_pages);
156 void ceph_osdc_release_request(struct kref *kref)
158 struct ceph_osd_request *req;
160 req = container_of(kref, struct ceph_osd_request, r_kref);
162 ceph_msg_put(req->r_request);
164 ceph_msg_revoke_incoming(req->r_reply);
165 ceph_msg_put(req->r_reply);
168 ceph_osd_data_release(&req->r_data_in);
169 ceph_osd_data_release(&req->r_data_out);
171 ceph_put_snap_context(req->r_snapc);
173 mempool_free(req, req->r_osdc->req_mempool);
177 EXPORT_SYMBOL(ceph_osdc_release_request);
179 struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
180 struct ceph_snap_context *snapc,
181 unsigned int num_ops,
185 struct ceph_osd_request *req;
186 struct ceph_msg *msg;
189 BUILD_BUG_ON(CEPH_OSD_MAX_OP > U16_MAX);
190 BUG_ON(num_ops > CEPH_OSD_MAX_OP);
192 msg_size = 4 + 4 + 8 + 8 + 4+8;
193 msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */
194 msg_size += 1 + 8 + 4 + 4; /* pg_t */
195 msg_size += 4 + MAX_OBJ_NAME_SIZE;
196 msg_size += 2 + num_ops*sizeof(struct ceph_osd_op);
197 msg_size += 8; /* snapid */
198 msg_size += 8; /* snap_seq */
199 msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */
203 req = mempool_alloc(osdc->req_mempool, gfp_flags);
204 memset(req, 0, sizeof(*req));
206 req = kzalloc(sizeof(*req), gfp_flags);
212 req->r_mempool = use_mempool;
213 req->r_num_ops = num_ops;
215 kref_init(&req->r_kref);
216 init_completion(&req->r_completion);
217 init_completion(&req->r_safe_completion);
218 RB_CLEAR_NODE(&req->r_node);
219 INIT_LIST_HEAD(&req->r_unsafe_item);
220 INIT_LIST_HEAD(&req->r_linger_item);
221 INIT_LIST_HEAD(&req->r_linger_osd);
222 INIT_LIST_HEAD(&req->r_req_lru_item);
223 INIT_LIST_HEAD(&req->r_osd_item);
225 /* create reply message */
227 msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0);
229 msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY,
230 OSD_OPREPLY_FRONT_LEN, gfp_flags, true);
232 ceph_osdc_put_request(req);
237 ceph_osd_data_init(&req->r_data_in);
238 ceph_osd_data_init(&req->r_data_out);
240 /* create request message; allow space for oid */
242 msg = ceph_msgpool_get(&osdc->msgpool_op, 0);
244 msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true);
246 ceph_osdc_put_request(req);
250 memset(msg->front.iov_base, 0, msg->front.iov_len);
252 req->r_request = msg;
256 EXPORT_SYMBOL(ceph_osdc_alloc_request);
258 static bool osd_req_opcode_valid(u16 opcode)
261 case CEPH_OSD_OP_READ:
262 case CEPH_OSD_OP_STAT:
263 case CEPH_OSD_OP_MAPEXT:
264 case CEPH_OSD_OP_MASKTRUNC:
265 case CEPH_OSD_OP_SPARSE_READ:
266 case CEPH_OSD_OP_NOTIFY:
267 case CEPH_OSD_OP_NOTIFY_ACK:
268 case CEPH_OSD_OP_ASSERT_VER:
269 case CEPH_OSD_OP_WRITE:
270 case CEPH_OSD_OP_WRITEFULL:
271 case CEPH_OSD_OP_TRUNCATE:
272 case CEPH_OSD_OP_ZERO:
273 case CEPH_OSD_OP_DELETE:
274 case CEPH_OSD_OP_APPEND:
275 case CEPH_OSD_OP_STARTSYNC:
276 case CEPH_OSD_OP_SETTRUNC:
277 case CEPH_OSD_OP_TRIMTRUNC:
278 case CEPH_OSD_OP_TMAPUP:
279 case CEPH_OSD_OP_TMAPPUT:
280 case CEPH_OSD_OP_TMAPGET:
281 case CEPH_OSD_OP_CREATE:
282 case CEPH_OSD_OP_ROLLBACK:
283 case CEPH_OSD_OP_WATCH:
284 case CEPH_OSD_OP_OMAPGETKEYS:
285 case CEPH_OSD_OP_OMAPGETVALS:
286 case CEPH_OSD_OP_OMAPGETHEADER:
287 case CEPH_OSD_OP_OMAPGETVALSBYKEYS:
288 case CEPH_OSD_OP_OMAPSETVALS:
289 case CEPH_OSD_OP_OMAPSETHEADER:
290 case CEPH_OSD_OP_OMAPCLEAR:
291 case CEPH_OSD_OP_OMAPRMKEYS:
292 case CEPH_OSD_OP_OMAP_CMP:
293 case CEPH_OSD_OP_CLONERANGE:
294 case CEPH_OSD_OP_ASSERT_SRC_VERSION:
295 case CEPH_OSD_OP_SRC_CMPXATTR:
296 case CEPH_OSD_OP_GETXATTR:
297 case CEPH_OSD_OP_GETXATTRS:
298 case CEPH_OSD_OP_CMPXATTR:
299 case CEPH_OSD_OP_SETXATTR:
300 case CEPH_OSD_OP_SETXATTRS:
301 case CEPH_OSD_OP_RESETXATTRS:
302 case CEPH_OSD_OP_RMXATTR:
303 case CEPH_OSD_OP_PULL:
304 case CEPH_OSD_OP_PUSH:
305 case CEPH_OSD_OP_BALANCEREADS:
306 case CEPH_OSD_OP_UNBALANCEREADS:
307 case CEPH_OSD_OP_SCRUB:
308 case CEPH_OSD_OP_SCRUB_RESERVE:
309 case CEPH_OSD_OP_SCRUB_UNRESERVE:
310 case CEPH_OSD_OP_SCRUB_STOP:
311 case CEPH_OSD_OP_SCRUB_MAP:
312 case CEPH_OSD_OP_WRLOCK:
313 case CEPH_OSD_OP_WRUNLOCK:
314 case CEPH_OSD_OP_RDLOCK:
315 case CEPH_OSD_OP_RDUNLOCK:
316 case CEPH_OSD_OP_UPLOCK:
317 case CEPH_OSD_OP_DNLOCK:
318 case CEPH_OSD_OP_CALL:
319 case CEPH_OSD_OP_PGLS:
320 case CEPH_OSD_OP_PGLS_FILTER:
328 * This is an osd op init function for opcodes that have no data or
329 * other information associated with them. It also serves as a
330 * common init routine for all the other init functions, below.
332 static struct ceph_osd_req_op *
333 osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which,
336 struct ceph_osd_req_op *op;
338 BUG_ON(which >= osd_req->r_num_ops);
339 BUG_ON(!osd_req_opcode_valid(opcode));
341 op = &osd_req->r_ops[which];
342 memset(op, 0, sizeof (*op));
348 void osd_req_op_extent_init(struct ceph_osd_request *osd_req,
349 unsigned int which, u16 opcode,
350 u64 offset, u64 length,
351 u64 truncate_size, u32 truncate_seq)
353 struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, opcode);
354 size_t payload_len = 0;
356 BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE);
358 op->extent.offset = offset;
359 op->extent.length = length;
360 op->extent.truncate_size = truncate_size;
361 op->extent.truncate_seq = truncate_seq;
362 if (opcode == CEPH_OSD_OP_WRITE)
363 payload_len += length;
365 op->payload_len = payload_len;
367 EXPORT_SYMBOL(osd_req_op_extent_init);
369 void osd_req_op_extent_update(struct ceph_osd_request *osd_req,
370 unsigned int which, u64 length)
372 struct ceph_osd_req_op *op;
375 BUG_ON(which >= osd_req->r_num_ops);
376 op = &osd_req->r_ops[which];
377 previous = op->extent.length;
379 if (length == previous)
380 return; /* Nothing to do */
381 BUG_ON(length > previous);
383 op->extent.length = length;
384 op->payload_len -= previous - length;
386 EXPORT_SYMBOL(osd_req_op_extent_update);
388 void osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req,
390 struct ceph_osd_data *osd_data)
392 BUG_ON(which >= osd_req->r_num_ops);
393 osd_req->r_ops[which].extent.osd_data = osd_data;
395 EXPORT_SYMBOL(osd_req_op_extent_osd_data);
397 void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which,
398 u16 opcode, const char *class, const char *method,
399 const void *request_data, size_t request_data_size)
401 struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, opcode);
402 struct ceph_pagelist *pagelist;
403 size_t payload_len = 0;
406 BUG_ON(opcode != CEPH_OSD_OP_CALL);
408 pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS);
410 ceph_pagelist_init(pagelist);
412 op->cls.class_name = class;
413 size = strlen(class);
414 BUG_ON(size > (size_t) U8_MAX);
415 op->cls.class_len = size;
416 ceph_pagelist_append(pagelist, class, size);
419 op->cls.method_name = method;
420 size = strlen(method);
421 BUG_ON(size > (size_t) U8_MAX);
422 op->cls.method_len = size;
423 ceph_pagelist_append(pagelist, method, size);
426 op->cls.request_data = request_data;
427 BUG_ON(request_data_size > (size_t) U32_MAX);
428 op->cls.request_data_len = (u32) request_data_size;
429 ceph_pagelist_append(pagelist, request_data, request_data_size);
430 payload_len += request_data_size;
432 op->cls.request_info = &osd_req->r_data_out;
433 ceph_osd_data_pagelist_init(op->cls.request_info, pagelist);
435 op->cls.argc = 0; /* currently unused */
437 op->payload_len = payload_len;
439 EXPORT_SYMBOL(osd_req_op_cls_init);
440 void osd_req_op_cls_response_data(struct ceph_osd_request *osd_req,
442 struct ceph_osd_data *response_data)
444 BUG_ON(which >= osd_req->r_num_ops);
445 osd_req->r_ops[which].cls.response_data = response_data;
447 EXPORT_SYMBOL(osd_req_op_cls_response_data);
449 void osd_req_op_watch_init(struct ceph_osd_request *osd_req,
450 unsigned int which, u16 opcode,
451 u64 cookie, u64 version, int flag)
453 struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, opcode);
455 BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH);
457 op->watch.cookie = cookie;
458 /* op->watch.ver = version; */ /* XXX 3847 */
459 op->watch.ver = cpu_to_le64(version);
460 if (opcode == CEPH_OSD_OP_WATCH && flag)
461 op->watch.flag = (u8)1;
463 EXPORT_SYMBOL(osd_req_op_watch_init);
465 static u64 osd_req_encode_op(struct ceph_osd_request *req,
466 struct ceph_osd_op *dst, unsigned int which)
468 struct ceph_osd_req_op *src;
469 u64 request_data_len = 0;
471 BUG_ON(which >= req->r_num_ops);
472 src = &req->r_ops[which];
473 if (WARN_ON(!osd_req_opcode_valid(src->op))) {
474 pr_err("unrecognized osd opcode %d\n", src->op);
480 case CEPH_OSD_OP_STAT:
482 case CEPH_OSD_OP_READ:
483 case CEPH_OSD_OP_WRITE:
484 if (src->op == CEPH_OSD_OP_WRITE)
485 request_data_len = src->extent.length;
486 dst->extent.offset = cpu_to_le64(src->extent.offset);
487 dst->extent.length = cpu_to_le64(src->extent.length);
488 dst->extent.truncate_size =
489 cpu_to_le64(src->extent.truncate_size);
490 dst->extent.truncate_seq =
491 cpu_to_le32(src->extent.truncate_seq);
492 if (src->op == CEPH_OSD_OP_WRITE)
493 WARN_ON(src->extent.osd_data != &req->r_data_out);
495 WARN_ON(src->extent.osd_data != &req->r_data_in);
497 case CEPH_OSD_OP_CALL:
498 dst->cls.class_len = src->cls.class_len;
499 dst->cls.method_len = src->cls.method_len;
500 dst->cls.indata_len = cpu_to_le32(src->cls.request_data_len);
501 WARN_ON(src->cls.response_data != &req->r_data_in);
502 WARN_ON(src->cls.request_info != &req->r_data_out);
503 BUG_ON(src->cls.request_info->type !=
504 CEPH_OSD_DATA_TYPE_PAGELIST);
505 request_data_len = src->cls.request_info->pagelist->length;
507 case CEPH_OSD_OP_STARTSYNC:
509 case CEPH_OSD_OP_NOTIFY_ACK:
510 case CEPH_OSD_OP_WATCH:
511 dst->watch.cookie = cpu_to_le64(src->watch.cookie);
512 dst->watch.ver = cpu_to_le64(src->watch.ver);
513 dst->watch.flag = src->watch.flag;
516 pr_err("unsupported osd opcode %s\n",
517 ceph_osd_op_name(src->op));
522 dst->op = cpu_to_le16(src->op);
523 dst->payload_len = cpu_to_le32(src->payload_len);
525 return request_data_len;
529 * build new request AND message
532 void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off,
533 struct ceph_snap_context *snapc, u64 snap_id,
534 struct timespec *mtime)
536 struct ceph_msg *msg = req->r_request;
539 int flags = req->r_flags;
543 req->r_snapid = snap_id;
544 req->r_snapc = ceph_get_snap_context(snapc);
547 msg->hdr.version = cpu_to_le16(4);
549 p = msg->front.iov_base;
550 ceph_encode_32(&p, 1); /* client_inc is always 1 */
551 req->r_request_osdmap_epoch = p;
553 req->r_request_flags = p;
555 if (req->r_flags & CEPH_OSD_FLAG_WRITE)
556 ceph_encode_timespec(p, mtime);
557 p += sizeof(struct ceph_timespec);
558 req->r_request_reassert_version = p;
559 p += sizeof(struct ceph_eversion); /* will get filled in */
562 ceph_encode_8(&p, 4);
563 ceph_encode_8(&p, 4);
564 ceph_encode_32(&p, 8 + 4 + 4);
565 req->r_request_pool = p;
567 ceph_encode_32(&p, -1); /* preferred */
568 ceph_encode_32(&p, 0); /* key len */
570 ceph_encode_8(&p, 1);
571 req->r_request_pgid = p;
573 ceph_encode_32(&p, -1); /* preferred */
576 ceph_encode_32(&p, req->r_oid_len);
577 memcpy(p, req->r_oid, req->r_oid_len);
578 dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len);
581 /* ops--can imply data */
582 ceph_encode_16(&p, (u16)req->r_num_ops);
584 for (i = 0; i < req->r_num_ops; i++) {
585 data_len += osd_req_encode_op(req, p, i);
586 p += sizeof(struct ceph_osd_op);
590 ceph_encode_64(&p, req->r_snapid);
591 ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0);
592 ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0);
594 for (i = 0; i < snapc->num_snaps; i++) {
595 ceph_encode_64(&p, req->r_snapc->snaps[i]);
599 req->r_request_attempts = p;
603 if (flags & CEPH_OSD_FLAG_WRITE) {
607 * The header "data_off" is a hint to the receiver
608 * allowing it to align received data into its
609 * buffers such that there's no need to re-copy
610 * it before writing it to disk (direct I/O).
612 data_off = (u16) (off & 0xffff);
613 req->r_request->hdr.data_off = cpu_to_le16(data_off);
615 req->r_request->hdr.data_len = cpu_to_le32(data_len);
617 BUG_ON(p > msg->front.iov_base + msg->front.iov_len);
618 msg_size = p - msg->front.iov_base;
619 msg->front.iov_len = msg_size;
620 msg->hdr.front_len = cpu_to_le32(msg_size);
622 dout("build_request msg_size was %d\n", (int)msg_size);
624 EXPORT_SYMBOL(ceph_osdc_build_request);
627 * build new request AND message, calculate layout, and adjust file
630 * if the file was recently truncated, we include information about its
631 * old and new size so that the object can be updated appropriately. (we
632 * avoid synchronously deleting truncated objects because it's slow.)
634 * if @do_sync, include a 'startsync' command so that the osd will flush
637 struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
638 struct ceph_file_layout *layout,
639 struct ceph_vino vino,
640 u64 off, u64 *plen, int num_ops,
641 int opcode, int flags,
642 struct ceph_snap_context *snapc,
647 struct ceph_osd_request *req;
648 struct ceph_osd_data *osd_data;
656 BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE);
658 req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool,
661 return ERR_PTR(-ENOMEM);
662 osd_data = opcode == CEPH_OSD_OP_WRITE ? &req->r_data_out
665 req->r_flags = flags;
667 /* calculate max write size */
668 r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen);
670 ceph_osdc_put_request(req);
674 object_size = le32_to_cpu(layout->fl_object_size);
675 object_base = off - objoff;
676 if (truncate_size <= object_base) {
679 truncate_size -= object_base;
680 if (truncate_size > object_size)
681 truncate_size = object_size;
684 osd_req_op_extent_init(req, 0, opcode, objoff, objlen,
685 truncate_size, truncate_seq);
686 osd_req_op_extent_osd_data(req, 0, osd_data);
689 * A second op in the ops array means the caller wants to
690 * also issue a include a 'startsync' command so that the
691 * osd will flush data quickly.
694 osd_req_op_init(req, 1, CEPH_OSD_OP_STARTSYNC);
696 req->r_file_layout = *layout; /* keep a copy */
698 snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx",
700 req->r_oid_len = strlen(req->r_oid);
704 EXPORT_SYMBOL(ceph_osdc_new_request);
707 * We keep osd requests in an rbtree, sorted by ->r_tid.
709 static void __insert_request(struct ceph_osd_client *osdc,
710 struct ceph_osd_request *new)
712 struct rb_node **p = &osdc->requests.rb_node;
713 struct rb_node *parent = NULL;
714 struct ceph_osd_request *req = NULL;
718 req = rb_entry(parent, struct ceph_osd_request, r_node);
719 if (new->r_tid < req->r_tid)
721 else if (new->r_tid > req->r_tid)
727 rb_link_node(&new->r_node, parent, p);
728 rb_insert_color(&new->r_node, &osdc->requests);
731 static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc,
734 struct ceph_osd_request *req;
735 struct rb_node *n = osdc->requests.rb_node;
738 req = rb_entry(n, struct ceph_osd_request, r_node);
739 if (tid < req->r_tid)
741 else if (tid > req->r_tid)
749 static struct ceph_osd_request *
750 __lookup_request_ge(struct ceph_osd_client *osdc,
753 struct ceph_osd_request *req;
754 struct rb_node *n = osdc->requests.rb_node;
757 req = rb_entry(n, struct ceph_osd_request, r_node);
758 if (tid < req->r_tid) {
762 } else if (tid > req->r_tid) {
772 * Resubmit requests pending on the given osd.
774 static void __kick_osd_requests(struct ceph_osd_client *osdc,
775 struct ceph_osd *osd)
777 struct ceph_osd_request *req, *nreq;
781 dout("__kick_osd_requests osd%d\n", osd->o_osd);
782 err = __reset_osd(osdc, osd);
786 * Build up a list of requests to resend by traversing the
787 * osd's list of requests. Requests for a given object are
788 * sent in tid order, and that is also the order they're
789 * kept on this list. Therefore all requests that are in
790 * flight will be found first, followed by all requests that
791 * have not yet been sent. And to resend requests while
792 * preserving this order we will want to put any sent
793 * requests back on the front of the osd client's unsent
796 * So we build a separate ordered list of already-sent
797 * requests for the affected osd and splice it onto the
798 * front of the osd client's unsent list. Once we've seen a
799 * request that has not yet been sent we're done. Those
800 * requests are already sitting right where they belong.
802 list_for_each_entry(req, &osd->o_requests, r_osd_item) {
805 list_move_tail(&req->r_req_lru_item, &resend);
806 dout("requeueing %p tid %llu osd%d\n", req, req->r_tid,
809 req->r_flags |= CEPH_OSD_FLAG_RETRY;
811 list_splice(&resend, &osdc->req_unsent);
814 * Linger requests are re-registered before sending, which
815 * sets up a new tid for each. We add them to the unsent
816 * list at the end to keep things in tid order.
818 list_for_each_entry_safe(req, nreq, &osd->o_linger_requests,
821 * reregister request prior to unregistering linger so
822 * that r_osd is preserved.
824 BUG_ON(!list_empty(&req->r_req_lru_item));
825 __register_request(osdc, req);
826 list_add_tail(&req->r_req_lru_item, &osdc->req_unsent);
827 list_add_tail(&req->r_osd_item, &req->r_osd->o_requests);
828 __unregister_linger_request(osdc, req);
829 dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid,
835 * If the osd connection drops, we need to resubmit all requests.
837 static void osd_reset(struct ceph_connection *con)
839 struct ceph_osd *osd = con->private;
840 struct ceph_osd_client *osdc;
844 dout("osd_reset osd%d\n", osd->o_osd);
846 down_read(&osdc->map_sem);
847 mutex_lock(&osdc->request_mutex);
848 __kick_osd_requests(osdc, osd);
850 mutex_unlock(&osdc->request_mutex);
851 up_read(&osdc->map_sem);
855 * Track open sessions with osds.
857 static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum)
859 struct ceph_osd *osd;
861 osd = kzalloc(sizeof(*osd), GFP_NOFS);
865 atomic_set(&osd->o_ref, 1);
868 RB_CLEAR_NODE(&osd->o_node);
869 INIT_LIST_HEAD(&osd->o_requests);
870 INIT_LIST_HEAD(&osd->o_linger_requests);
871 INIT_LIST_HEAD(&osd->o_osd_lru);
872 osd->o_incarnation = 1;
874 ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr);
876 INIT_LIST_HEAD(&osd->o_keepalive_item);
880 static struct ceph_osd *get_osd(struct ceph_osd *osd)
882 if (atomic_inc_not_zero(&osd->o_ref)) {
883 dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1,
884 atomic_read(&osd->o_ref));
887 dout("get_osd %p FAIL\n", osd);
892 static void put_osd(struct ceph_osd *osd)
894 dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref),
895 atomic_read(&osd->o_ref) - 1);
896 if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) {
897 struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth;
899 ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer);
905 * remove an osd from our map
907 static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd)
909 dout("__remove_osd %p\n", osd);
910 BUG_ON(!list_empty(&osd->o_requests));
911 rb_erase(&osd->o_node, &osdc->osds);
912 list_del_init(&osd->o_osd_lru);
913 ceph_con_close(&osd->o_con);
917 static void remove_all_osds(struct ceph_osd_client *osdc)
919 dout("%s %p\n", __func__, osdc);
920 mutex_lock(&osdc->request_mutex);
921 while (!RB_EMPTY_ROOT(&osdc->osds)) {
922 struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds),
923 struct ceph_osd, o_node);
924 __remove_osd(osdc, osd);
926 mutex_unlock(&osdc->request_mutex);
929 static void __move_osd_to_lru(struct ceph_osd_client *osdc,
930 struct ceph_osd *osd)
932 dout("__move_osd_to_lru %p\n", osd);
933 BUG_ON(!list_empty(&osd->o_osd_lru));
934 list_add_tail(&osd->o_osd_lru, &osdc->osd_lru);
935 osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ;
938 static void __remove_osd_from_lru(struct ceph_osd *osd)
940 dout("__remove_osd_from_lru %p\n", osd);
941 if (!list_empty(&osd->o_osd_lru))
942 list_del_init(&osd->o_osd_lru);
945 static void remove_old_osds(struct ceph_osd_client *osdc)
947 struct ceph_osd *osd, *nosd;
949 dout("__remove_old_osds %p\n", osdc);
950 mutex_lock(&osdc->request_mutex);
951 list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) {
952 if (time_before(jiffies, osd->lru_ttl))
954 __remove_osd(osdc, osd);
956 mutex_unlock(&osdc->request_mutex);
962 static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd)
964 struct ceph_entity_addr *peer_addr;
966 dout("__reset_osd %p osd%d\n", osd, osd->o_osd);
967 if (list_empty(&osd->o_requests) &&
968 list_empty(&osd->o_linger_requests)) {
969 __remove_osd(osdc, osd);
974 peer_addr = &osdc->osdmap->osd_addr[osd->o_osd];
975 if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) &&
976 !ceph_con_opened(&osd->o_con)) {
977 struct ceph_osd_request *req;
979 dout(" osd addr hasn't changed and connection never opened,"
980 " letting msgr retry");
981 /* touch each r_stamp for handle_timeout()'s benfit */
982 list_for_each_entry(req, &osd->o_requests, r_osd_item)
983 req->r_stamp = jiffies;
988 ceph_con_close(&osd->o_con);
989 ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr);
990 osd->o_incarnation++;
995 static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new)
997 struct rb_node **p = &osdc->osds.rb_node;
998 struct rb_node *parent = NULL;
999 struct ceph_osd *osd = NULL;
1001 dout("__insert_osd %p osd%d\n", new, new->o_osd);
1004 osd = rb_entry(parent, struct ceph_osd, o_node);
1005 if (new->o_osd < osd->o_osd)
1007 else if (new->o_osd > osd->o_osd)
1008 p = &(*p)->rb_right;
1013 rb_link_node(&new->o_node, parent, p);
1014 rb_insert_color(&new->o_node, &osdc->osds);
1017 static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o)
1019 struct ceph_osd *osd;
1020 struct rb_node *n = osdc->osds.rb_node;
1023 osd = rb_entry(n, struct ceph_osd, o_node);
1026 else if (o > osd->o_osd)
1034 static void __schedule_osd_timeout(struct ceph_osd_client *osdc)
1036 schedule_delayed_work(&osdc->timeout_work,
1037 osdc->client->options->osd_keepalive_timeout * HZ);
1040 static void __cancel_osd_timeout(struct ceph_osd_client *osdc)
1042 cancel_delayed_work(&osdc->timeout_work);
1046 * Register request, assign tid. If this is the first request, set up
1047 * the timeout event.
1049 static void __register_request(struct ceph_osd_client *osdc,
1050 struct ceph_osd_request *req)
1052 req->r_tid = ++osdc->last_tid;
1053 req->r_request->hdr.tid = cpu_to_le64(req->r_tid);
1054 dout("__register_request %p tid %lld\n", req, req->r_tid);
1055 __insert_request(osdc, req);
1056 ceph_osdc_get_request(req);
1057 osdc->num_requests++;
1058 if (osdc->num_requests == 1) {
1059 dout(" first request, scheduling timeout\n");
1060 __schedule_osd_timeout(osdc);
1065 * called under osdc->request_mutex
1067 static void __unregister_request(struct ceph_osd_client *osdc,
1068 struct ceph_osd_request *req)
1070 if (RB_EMPTY_NODE(&req->r_node)) {
1071 dout("__unregister_request %p tid %lld not registered\n",
1076 dout("__unregister_request %p tid %lld\n", req, req->r_tid);
1077 rb_erase(&req->r_node, &osdc->requests);
1078 osdc->num_requests--;
1081 /* make sure the original request isn't in flight. */
1082 ceph_msg_revoke(req->r_request);
1084 list_del_init(&req->r_osd_item);
1085 if (list_empty(&req->r_osd->o_requests) &&
1086 list_empty(&req->r_osd->o_linger_requests)) {
1087 dout("moving osd to %p lru\n", req->r_osd);
1088 __move_osd_to_lru(osdc, req->r_osd);
1090 if (list_empty(&req->r_linger_item))
1094 list_del_init(&req->r_req_lru_item);
1095 ceph_osdc_put_request(req);
1097 if (osdc->num_requests == 0) {
1098 dout(" no requests, canceling timeout\n");
1099 __cancel_osd_timeout(osdc);
1104 * Cancel a previously queued request message
1106 static void __cancel_request(struct ceph_osd_request *req)
1108 if (req->r_sent && req->r_osd) {
1109 ceph_msg_revoke(req->r_request);
1114 static void __register_linger_request(struct ceph_osd_client *osdc,
1115 struct ceph_osd_request *req)
1117 dout("__register_linger_request %p\n", req);
1118 list_add_tail(&req->r_linger_item, &osdc->req_linger);
1120 list_add_tail(&req->r_linger_osd,
1121 &req->r_osd->o_linger_requests);
1124 static void __unregister_linger_request(struct ceph_osd_client *osdc,
1125 struct ceph_osd_request *req)
1127 dout("__unregister_linger_request %p\n", req);
1128 list_del_init(&req->r_linger_item);
1130 list_del_init(&req->r_linger_osd);
1132 if (list_empty(&req->r_osd->o_requests) &&
1133 list_empty(&req->r_osd->o_linger_requests)) {
1134 dout("moving osd to %p lru\n", req->r_osd);
1135 __move_osd_to_lru(osdc, req->r_osd);
1137 if (list_empty(&req->r_osd_item))
1142 void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc,
1143 struct ceph_osd_request *req)
1145 mutex_lock(&osdc->request_mutex);
1146 if (req->r_linger) {
1147 __unregister_linger_request(osdc, req);
1148 ceph_osdc_put_request(req);
1150 mutex_unlock(&osdc->request_mutex);
1152 EXPORT_SYMBOL(ceph_osdc_unregister_linger_request);
1154 void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
1155 struct ceph_osd_request *req)
1157 if (!req->r_linger) {
1158 dout("set_request_linger %p\n", req);
1161 * caller is now responsible for calling
1162 * unregister_linger_request
1164 ceph_osdc_get_request(req);
1167 EXPORT_SYMBOL(ceph_osdc_set_request_linger);
1170 * Pick an osd (the first 'up' osd in the pg), allocate the osd struct
1171 * (as needed), and set the request r_osd appropriately. If there is
1172 * no up osd, set r_osd to NULL. Move the request to the appropriate list
1173 * (unsent, homeless) or leave on in-flight lru.
1175 * Return 0 if unchanged, 1 if changed, or negative on error.
1177 * Caller should hold map_sem for read and request_mutex.
1179 static int __map_request(struct ceph_osd_client *osdc,
1180 struct ceph_osd_request *req, int force_resend)
1182 struct ceph_pg pgid;
1183 int acting[CEPH_PG_MAX_SIZE];
1184 int o = -1, num = 0;
1187 dout("map_request %p tid %lld\n", req, req->r_tid);
1188 err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap,
1189 ceph_file_layout_pg_pool(req->r_file_layout));
1191 list_move(&req->r_req_lru_item, &osdc->req_notarget);
1196 err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting);
1202 if ((!force_resend &&
1203 req->r_osd && req->r_osd->o_osd == o &&
1204 req->r_sent >= req->r_osd->o_incarnation &&
1205 req->r_num_pg_osds == num &&
1206 memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) ||
1207 (req->r_osd == NULL && o == -1))
1208 return 0; /* no change */
1210 dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n",
1211 req->r_tid, pgid.pool, pgid.seed, o,
1212 req->r_osd ? req->r_osd->o_osd : -1);
1214 /* record full pg acting set */
1215 memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num);
1216 req->r_num_pg_osds = num;
1219 __cancel_request(req);
1220 list_del_init(&req->r_osd_item);
1224 req->r_osd = __lookup_osd(osdc, o);
1225 if (!req->r_osd && o >= 0) {
1227 req->r_osd = create_osd(osdc, o);
1229 list_move(&req->r_req_lru_item, &osdc->req_notarget);
1233 dout("map_request osd %p is osd%d\n", req->r_osd, o);
1234 __insert_osd(osdc, req->r_osd);
1236 ceph_con_open(&req->r_osd->o_con,
1237 CEPH_ENTITY_TYPE_OSD, o,
1238 &osdc->osdmap->osd_addr[o]);
1242 __remove_osd_from_lru(req->r_osd);
1243 list_add_tail(&req->r_osd_item, &req->r_osd->o_requests);
1244 list_move_tail(&req->r_req_lru_item, &osdc->req_unsent);
1246 list_move_tail(&req->r_req_lru_item, &osdc->req_notarget);
1248 err = 1; /* osd or pg changed */
1255 * caller should hold map_sem (for read) and request_mutex
1257 static void __send_request(struct ceph_osd_client *osdc,
1258 struct ceph_osd_request *req)
1262 dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n",
1263 req, req->r_tid, req->r_osd->o_osd, req->r_flags,
1264 (unsigned long long)req->r_pgid.pool, req->r_pgid.seed);
1266 /* fill in message content that changes each time we send it */
1267 put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch);
1268 put_unaligned_le32(req->r_flags, req->r_request_flags);
1269 put_unaligned_le64(req->r_pgid.pool, req->r_request_pool);
1270 p = req->r_request_pgid;
1271 ceph_encode_64(&p, req->r_pgid.pool);
1272 ceph_encode_32(&p, req->r_pgid.seed);
1273 put_unaligned_le64(1, req->r_request_attempts); /* FIXME */
1274 memcpy(req->r_request_reassert_version, &req->r_reassert_version,
1275 sizeof(req->r_reassert_version));
1277 req->r_stamp = jiffies;
1278 list_move_tail(&req->r_req_lru_item, &osdc->req_lru);
1280 ceph_msg_get(req->r_request); /* send consumes a ref */
1281 ceph_con_send(&req->r_osd->o_con, req->r_request);
1282 req->r_sent = req->r_osd->o_incarnation;
1286 * Send any requests in the queue (req_unsent).
1288 static void __send_queued(struct ceph_osd_client *osdc)
1290 struct ceph_osd_request *req, *tmp;
1292 dout("__send_queued\n");
1293 list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item)
1294 __send_request(osdc, req);
1298 * Timeout callback, called every N seconds when 1 or more osd
1299 * requests has been active for more than N seconds. When this
1300 * happens, we ping all OSDs with requests who have timed out to
1301 * ensure any communications channel reset is detected. Reset the
1302 * request timeouts another N seconds in the future as we go.
1303 * Reschedule the timeout event another N seconds in future (unless
1304 * there are no open requests).
1306 static void handle_timeout(struct work_struct *work)
1308 struct ceph_osd_client *osdc =
1309 container_of(work, struct ceph_osd_client, timeout_work.work);
1310 struct ceph_osd_request *req;
1311 struct ceph_osd *osd;
1312 unsigned long keepalive =
1313 osdc->client->options->osd_keepalive_timeout * HZ;
1314 struct list_head slow_osds;
1316 down_read(&osdc->map_sem);
1318 ceph_monc_request_next_osdmap(&osdc->client->monc);
1320 mutex_lock(&osdc->request_mutex);
1323 * ping osds that are a bit slow. this ensures that if there
1324 * is a break in the TCP connection we will notice, and reopen
1325 * a connection with that osd (from the fault callback).
1327 INIT_LIST_HEAD(&slow_osds);
1328 list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) {
1329 if (time_before(jiffies, req->r_stamp + keepalive))
1334 dout(" tid %llu is slow, will send keepalive on osd%d\n",
1335 req->r_tid, osd->o_osd);
1336 list_move_tail(&osd->o_keepalive_item, &slow_osds);
1338 while (!list_empty(&slow_osds)) {
1339 osd = list_entry(slow_osds.next, struct ceph_osd,
1341 list_del_init(&osd->o_keepalive_item);
1342 ceph_con_keepalive(&osd->o_con);
1345 __schedule_osd_timeout(osdc);
1346 __send_queued(osdc);
1347 mutex_unlock(&osdc->request_mutex);
1348 up_read(&osdc->map_sem);
1351 static void handle_osds_timeout(struct work_struct *work)
1353 struct ceph_osd_client *osdc =
1354 container_of(work, struct ceph_osd_client,
1355 osds_timeout_work.work);
1356 unsigned long delay =
1357 osdc->client->options->osd_idle_ttl * HZ >> 2;
1359 dout("osds timeout\n");
1360 down_read(&osdc->map_sem);
1361 remove_old_osds(osdc);
1362 up_read(&osdc->map_sem);
1364 schedule_delayed_work(&osdc->osds_timeout_work,
1365 round_jiffies_relative(delay));
1368 static void complete_request(struct ceph_osd_request *req)
1370 if (req->r_safe_callback)
1371 req->r_safe_callback(req, NULL);
1372 complete_all(&req->r_safe_completion); /* fsync waiter */
1376 * handle osd op reply. either call the callback if it is specified,
1377 * or do the completion to wake up the waiting thread.
1379 static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg,
1380 struct ceph_connection *con)
1383 struct ceph_osd_request *req;
1386 unsigned int numops;
1387 int payload_len, flags;
1393 u64 reassert_version;
1395 int already_completed;
1399 tid = le64_to_cpu(msg->hdr.tid);
1400 dout("handle_reply %p tid %llu\n", msg, tid);
1402 p = msg->front.iov_base;
1403 end = p + msg->front.iov_len;
1405 ceph_decode_need(&p, end, 4, bad);
1406 object_len = ceph_decode_32(&p);
1407 ceph_decode_need(&p, end, object_len, bad);
1410 err = ceph_decode_pgid(&p, end, &pg);
1414 ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad);
1415 flags = ceph_decode_64(&p);
1416 result = ceph_decode_32(&p);
1417 reassert_epoch = ceph_decode_32(&p);
1418 reassert_version = ceph_decode_64(&p);
1419 osdmap_epoch = ceph_decode_32(&p);
1422 mutex_lock(&osdc->request_mutex);
1423 req = __lookup_request(osdc, tid);
1425 dout("handle_reply tid %llu dne\n", tid);
1428 ceph_osdc_get_request(req);
1430 dout("handle_reply %p tid %llu req %p result %d\n", msg, tid,
1433 ceph_decode_need(&p, end, 4, bad);
1434 numops = ceph_decode_32(&p);
1435 if (numops > CEPH_OSD_MAX_OP)
1437 if (numops != req->r_num_ops)
1440 ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad);
1441 for (i = 0; i < numops; i++) {
1442 struct ceph_osd_op *op = p;
1445 len = le32_to_cpu(op->payload_len);
1446 req->r_reply_op_len[i] = len;
1447 dout(" op %d has %d bytes\n", i, len);
1451 bytes = le32_to_cpu(msg->hdr.data_len);
1452 if (payload_len != bytes) {
1453 pr_warning("sum of op payload lens %d != data_len %d",
1454 payload_len, bytes);
1458 ceph_decode_need(&p, end, 4 + numops * 4, bad);
1459 retry_attempt = ceph_decode_32(&p);
1460 for (i = 0; i < numops; i++)
1461 req->r_reply_op_result[i] = ceph_decode_32(&p);
1463 if (!req->r_got_reply) {
1465 req->r_result = result;
1466 dout("handle_reply result %d bytes %d\n", req->r_result,
1468 if (req->r_result == 0)
1469 req->r_result = bytes;
1471 /* in case this is a write and we need to replay, */
1472 req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch);
1473 req->r_reassert_version.version = cpu_to_le64(reassert_version);
1475 req->r_got_reply = 1;
1476 } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) {
1477 dout("handle_reply tid %llu dup ack\n", tid);
1478 mutex_unlock(&osdc->request_mutex);
1482 dout("handle_reply tid %llu flags %d\n", tid, flags);
1484 if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK))
1485 __register_linger_request(osdc, req);
1487 /* either this is a read, or we got the safe response */
1489 (flags & CEPH_OSD_FLAG_ONDISK) ||
1490 ((flags & CEPH_OSD_FLAG_WRITE) == 0))
1491 __unregister_request(osdc, req);
1493 already_completed = req->r_completed;
1494 req->r_completed = 1;
1495 mutex_unlock(&osdc->request_mutex);
1496 if (already_completed)
1499 if (req->r_callback)
1500 req->r_callback(req, msg);
1502 complete_all(&req->r_completion);
1504 if (flags & CEPH_OSD_FLAG_ONDISK)
1505 complete_request(req);
1508 dout("req=%p req->r_linger=%d\n", req, req->r_linger);
1509 ceph_osdc_put_request(req);
1513 ceph_osdc_put_request(req);
1515 mutex_unlock(&osdc->request_mutex);
1517 pr_err("corrupt osd_op_reply got %d %d\n",
1518 (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len));
1522 static void reset_changed_osds(struct ceph_osd_client *osdc)
1524 struct rb_node *p, *n;
1526 for (p = rb_first(&osdc->osds); p; p = n) {
1527 struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node);
1530 if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) ||
1531 memcmp(&osd->o_con.peer_addr,
1532 ceph_osd_addr(osdc->osdmap,
1534 sizeof(struct ceph_entity_addr)) != 0)
1535 __reset_osd(osdc, osd);
1540 * Requeue requests whose mapping to an OSD has changed. If requests map to
1541 * no osd, request a new map.
1543 * Caller should hold map_sem for read.
1545 static void kick_requests(struct ceph_osd_client *osdc, int force_resend)
1547 struct ceph_osd_request *req, *nreq;
1552 dout("kick_requests %s\n", force_resend ? " (force resend)" : "");
1553 mutex_lock(&osdc->request_mutex);
1554 for (p = rb_first(&osdc->requests); p; ) {
1555 req = rb_entry(p, struct ceph_osd_request, r_node);
1559 * For linger requests that have not yet been
1560 * registered, move them to the linger list; they'll
1561 * be sent to the osd in the loop below. Unregister
1562 * the request before re-registering it as a linger
1563 * request to ensure the __map_request() below
1564 * will decide it needs to be sent.
1566 if (req->r_linger && list_empty(&req->r_linger_item)) {
1567 dout("%p tid %llu restart on osd%d\n",
1569 req->r_osd ? req->r_osd->o_osd : -1);
1570 __unregister_request(osdc, req);
1571 __register_linger_request(osdc, req);
1575 err = __map_request(osdc, req, force_resend);
1577 continue; /* error */
1578 if (req->r_osd == NULL) {
1579 dout("%p tid %llu maps to no osd\n", req, req->r_tid);
1580 needmap++; /* request a newer map */
1581 } else if (err > 0) {
1582 if (!req->r_linger) {
1583 dout("%p tid %llu requeued on osd%d\n", req,
1585 req->r_osd ? req->r_osd->o_osd : -1);
1586 req->r_flags |= CEPH_OSD_FLAG_RETRY;
1591 list_for_each_entry_safe(req, nreq, &osdc->req_linger,
1593 dout("linger req=%p req->r_osd=%p\n", req, req->r_osd);
1595 err = __map_request(osdc, req, force_resend);
1596 dout("__map_request returned %d\n", err);
1598 continue; /* no change and no osd was specified */
1600 continue; /* hrm! */
1601 if (req->r_osd == NULL) {
1602 dout("tid %llu maps to no valid osd\n", req->r_tid);
1603 needmap++; /* request a newer map */
1607 dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid,
1608 req->r_osd ? req->r_osd->o_osd : -1);
1609 __register_request(osdc, req);
1610 __unregister_linger_request(osdc, req);
1612 mutex_unlock(&osdc->request_mutex);
1615 dout("%d requests for down osds, need new map\n", needmap);
1616 ceph_monc_request_next_osdmap(&osdc->client->monc);
1618 reset_changed_osds(osdc);
1623 * Process updated osd map.
1625 * The message contains any number of incremental and full maps, normally
1626 * indicating some sort of topology change in the cluster. Kick requests
1627 * off to different OSDs as needed.
1629 void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
1631 void *p, *end, *next;
1632 u32 nr_maps, maplen;
1634 struct ceph_osdmap *newmap = NULL, *oldmap;
1636 struct ceph_fsid fsid;
1638 dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0);
1639 p = msg->front.iov_base;
1640 end = p + msg->front.iov_len;
1643 ceph_decode_need(&p, end, sizeof(fsid), bad);
1644 ceph_decode_copy(&p, &fsid, sizeof(fsid));
1645 if (ceph_check_fsid(osdc->client, &fsid) < 0)
1648 down_write(&osdc->map_sem);
1650 /* incremental maps */
1651 ceph_decode_32_safe(&p, end, nr_maps, bad);
1652 dout(" %d inc maps\n", nr_maps);
1653 while (nr_maps > 0) {
1654 ceph_decode_need(&p, end, 2*sizeof(u32), bad);
1655 epoch = ceph_decode_32(&p);
1656 maplen = ceph_decode_32(&p);
1657 ceph_decode_need(&p, end, maplen, bad);
1659 if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) {
1660 dout("applying incremental map %u len %d\n",
1662 newmap = osdmap_apply_incremental(&p, next,
1664 &osdc->client->msgr);
1665 if (IS_ERR(newmap)) {
1666 err = PTR_ERR(newmap);
1670 if (newmap != osdc->osdmap) {
1671 ceph_osdmap_destroy(osdc->osdmap);
1672 osdc->osdmap = newmap;
1674 kick_requests(osdc, 0);
1676 dout("ignoring incremental map %u len %d\n",
1686 ceph_decode_32_safe(&p, end, nr_maps, bad);
1687 dout(" %d full maps\n", nr_maps);
1689 ceph_decode_need(&p, end, 2*sizeof(u32), bad);
1690 epoch = ceph_decode_32(&p);
1691 maplen = ceph_decode_32(&p);
1692 ceph_decode_need(&p, end, maplen, bad);
1694 dout("skipping non-latest full map %u len %d\n",
1696 } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) {
1697 dout("skipping full map %u len %d, "
1698 "older than our %u\n", epoch, maplen,
1699 osdc->osdmap->epoch);
1701 int skipped_map = 0;
1703 dout("taking full map %u len %d\n", epoch, maplen);
1704 newmap = osdmap_decode(&p, p+maplen);
1705 if (IS_ERR(newmap)) {
1706 err = PTR_ERR(newmap);
1710 oldmap = osdc->osdmap;
1711 osdc->osdmap = newmap;
1713 if (oldmap->epoch + 1 < newmap->epoch)
1715 ceph_osdmap_destroy(oldmap);
1717 kick_requests(osdc, skipped_map);
1724 downgrade_write(&osdc->map_sem);
1725 ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch);
1728 * subscribe to subsequent osdmap updates if full to ensure
1729 * we find out when we are no longer full and stop returning
1732 if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL))
1733 ceph_monc_request_next_osdmap(&osdc->client->monc);
1735 mutex_lock(&osdc->request_mutex);
1736 __send_queued(osdc);
1737 mutex_unlock(&osdc->request_mutex);
1738 up_read(&osdc->map_sem);
1739 wake_up_all(&osdc->client->auth_wq);
1743 pr_err("osdc handle_map corrupt msg\n");
1745 up_write(&osdc->map_sem);
1750 * watch/notify callback event infrastructure
1752 * These callbacks are used both for watch and notify operations.
1754 static void __release_event(struct kref *kref)
1756 struct ceph_osd_event *event =
1757 container_of(kref, struct ceph_osd_event, kref);
1759 dout("__release_event %p\n", event);
1763 static void get_event(struct ceph_osd_event *event)
1765 kref_get(&event->kref);
1768 void ceph_osdc_put_event(struct ceph_osd_event *event)
1770 kref_put(&event->kref, __release_event);
1772 EXPORT_SYMBOL(ceph_osdc_put_event);
1774 static void __insert_event(struct ceph_osd_client *osdc,
1775 struct ceph_osd_event *new)
1777 struct rb_node **p = &osdc->event_tree.rb_node;
1778 struct rb_node *parent = NULL;
1779 struct ceph_osd_event *event = NULL;
1783 event = rb_entry(parent, struct ceph_osd_event, node);
1784 if (new->cookie < event->cookie)
1786 else if (new->cookie > event->cookie)
1787 p = &(*p)->rb_right;
1792 rb_link_node(&new->node, parent, p);
1793 rb_insert_color(&new->node, &osdc->event_tree);
1796 static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc,
1799 struct rb_node **p = &osdc->event_tree.rb_node;
1800 struct rb_node *parent = NULL;
1801 struct ceph_osd_event *event = NULL;
1805 event = rb_entry(parent, struct ceph_osd_event, node);
1806 if (cookie < event->cookie)
1808 else if (cookie > event->cookie)
1809 p = &(*p)->rb_right;
1816 static void __remove_event(struct ceph_osd_event *event)
1818 struct ceph_osd_client *osdc = event->osdc;
1820 if (!RB_EMPTY_NODE(&event->node)) {
1821 dout("__remove_event removed %p\n", event);
1822 rb_erase(&event->node, &osdc->event_tree);
1823 ceph_osdc_put_event(event);
1825 dout("__remove_event didn't remove %p\n", event);
1829 int ceph_osdc_create_event(struct ceph_osd_client *osdc,
1830 void (*event_cb)(u64, u64, u8, void *),
1831 void *data, struct ceph_osd_event **pevent)
1833 struct ceph_osd_event *event;
1835 event = kmalloc(sizeof(*event), GFP_NOIO);
1839 dout("create_event %p\n", event);
1840 event->cb = event_cb;
1841 event->one_shot = 0;
1844 INIT_LIST_HEAD(&event->osd_node);
1845 RB_CLEAR_NODE(&event->node);
1846 kref_init(&event->kref); /* one ref for us */
1847 kref_get(&event->kref); /* one ref for the caller */
1849 spin_lock(&osdc->event_lock);
1850 event->cookie = ++osdc->event_count;
1851 __insert_event(osdc, event);
1852 spin_unlock(&osdc->event_lock);
1857 EXPORT_SYMBOL(ceph_osdc_create_event);
1859 void ceph_osdc_cancel_event(struct ceph_osd_event *event)
1861 struct ceph_osd_client *osdc = event->osdc;
1863 dout("cancel_event %p\n", event);
1864 spin_lock(&osdc->event_lock);
1865 __remove_event(event);
1866 spin_unlock(&osdc->event_lock);
1867 ceph_osdc_put_event(event); /* caller's */
1869 EXPORT_SYMBOL(ceph_osdc_cancel_event);
1872 static void do_event_work(struct work_struct *work)
1874 struct ceph_osd_event_work *event_work =
1875 container_of(work, struct ceph_osd_event_work, work);
1876 struct ceph_osd_event *event = event_work->event;
1877 u64 ver = event_work->ver;
1878 u64 notify_id = event_work->notify_id;
1879 u8 opcode = event_work->opcode;
1881 dout("do_event_work completing %p\n", event);
1882 event->cb(ver, notify_id, opcode, event->data);
1883 dout("do_event_work completed %p\n", event);
1884 ceph_osdc_put_event(event);
1890 * Process osd watch notifications
1892 static void handle_watch_notify(struct ceph_osd_client *osdc,
1893 struct ceph_msg *msg)
1897 u64 cookie, ver, notify_id;
1899 struct ceph_osd_event *event;
1900 struct ceph_osd_event_work *event_work;
1902 p = msg->front.iov_base;
1903 end = p + msg->front.iov_len;
1905 ceph_decode_8_safe(&p, end, proto_ver, bad);
1906 ceph_decode_8_safe(&p, end, opcode, bad);
1907 ceph_decode_64_safe(&p, end, cookie, bad);
1908 ceph_decode_64_safe(&p, end, ver, bad);
1909 ceph_decode_64_safe(&p, end, notify_id, bad);
1911 spin_lock(&osdc->event_lock);
1912 event = __find_event(osdc, cookie);
1914 BUG_ON(event->one_shot);
1917 spin_unlock(&osdc->event_lock);
1918 dout("handle_watch_notify cookie %lld ver %lld event %p\n",
1919 cookie, ver, event);
1921 event_work = kmalloc(sizeof(*event_work), GFP_NOIO);
1923 dout("ERROR: could not allocate event_work\n");
1926 INIT_WORK(&event_work->work, do_event_work);
1927 event_work->event = event;
1928 event_work->ver = ver;
1929 event_work->notify_id = notify_id;
1930 event_work->opcode = opcode;
1931 if (!queue_work(osdc->notify_wq, &event_work->work)) {
1932 dout("WARNING: failed to queue notify event work\n");
1940 ceph_osdc_put_event(event);
1944 pr_err("osdc handle_watch_notify corrupt msg\n");
1948 static void ceph_osdc_msg_data_set(struct ceph_msg *msg,
1949 struct ceph_osd_data *osd_data)
1951 u64 length = ceph_osd_data_length(osd_data);
1953 if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) {
1954 BUG_ON(length > (u64) SIZE_MAX);
1956 ceph_msg_data_set_pages(msg, osd_data->pages,
1957 length, osd_data->alignment);
1958 } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) {
1960 ceph_msg_data_set_pagelist(msg, osd_data->pagelist);
1962 } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) {
1963 ceph_msg_data_set_bio(msg, osd_data->bio, length);
1966 BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE);
1971 * Register request, send initial attempt.
1973 int ceph_osdc_start_request(struct ceph_osd_client *osdc,
1974 struct ceph_osd_request *req,
1979 /* Set up response incoming data and request outgoing data fields */
1981 ceph_osdc_msg_data_set(req->r_reply, &req->r_data_in);
1982 ceph_osdc_msg_data_set(req->r_request, &req->r_data_out);
1984 down_read(&osdc->map_sem);
1985 mutex_lock(&osdc->request_mutex);
1986 __register_request(osdc, req);
1987 WARN_ON(req->r_sent);
1988 rc = __map_request(osdc, req, 0);
1991 dout("osdc_start_request failed map, "
1992 " will retry %lld\n", req->r_tid);
1997 if (req->r_osd == NULL) {
1998 dout("send_request %p no up osds in pg\n", req);
1999 ceph_monc_request_next_osdmap(&osdc->client->monc);
2001 __send_queued(osdc);
2005 mutex_unlock(&osdc->request_mutex);
2006 up_read(&osdc->map_sem);
2009 EXPORT_SYMBOL(ceph_osdc_start_request);
2012 * wait for a request to complete
2014 int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
2015 struct ceph_osd_request *req)
2019 rc = wait_for_completion_interruptible(&req->r_completion);
2021 mutex_lock(&osdc->request_mutex);
2022 __cancel_request(req);
2023 __unregister_request(osdc, req);
2024 mutex_unlock(&osdc->request_mutex);
2025 complete_request(req);
2026 dout("wait_request tid %llu canceled/timed out\n", req->r_tid);
2030 dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result);
2031 return req->r_result;
2033 EXPORT_SYMBOL(ceph_osdc_wait_request);
2036 * sync - wait for all in-flight requests to flush. avoid starvation.
2038 void ceph_osdc_sync(struct ceph_osd_client *osdc)
2040 struct ceph_osd_request *req;
2041 u64 last_tid, next_tid = 0;
2043 mutex_lock(&osdc->request_mutex);
2044 last_tid = osdc->last_tid;
2046 req = __lookup_request_ge(osdc, next_tid);
2049 if (req->r_tid > last_tid)
2052 next_tid = req->r_tid + 1;
2053 if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0)
2056 ceph_osdc_get_request(req);
2057 mutex_unlock(&osdc->request_mutex);
2058 dout("sync waiting on tid %llu (last is %llu)\n",
2059 req->r_tid, last_tid);
2060 wait_for_completion(&req->r_safe_completion);
2061 mutex_lock(&osdc->request_mutex);
2062 ceph_osdc_put_request(req);
2064 mutex_unlock(&osdc->request_mutex);
2065 dout("sync done (thru tid %llu)\n", last_tid);
2067 EXPORT_SYMBOL(ceph_osdc_sync);
2072 int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client)
2077 osdc->client = client;
2078 osdc->osdmap = NULL;
2079 init_rwsem(&osdc->map_sem);
2080 init_completion(&osdc->map_waiters);
2081 osdc->last_requested_map = 0;
2082 mutex_init(&osdc->request_mutex);
2084 osdc->osds = RB_ROOT;
2085 INIT_LIST_HEAD(&osdc->osd_lru);
2086 osdc->requests = RB_ROOT;
2087 INIT_LIST_HEAD(&osdc->req_lru);
2088 INIT_LIST_HEAD(&osdc->req_unsent);
2089 INIT_LIST_HEAD(&osdc->req_notarget);
2090 INIT_LIST_HEAD(&osdc->req_linger);
2091 osdc->num_requests = 0;
2092 INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout);
2093 INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout);
2094 spin_lock_init(&osdc->event_lock);
2095 osdc->event_tree = RB_ROOT;
2096 osdc->event_count = 0;
2098 schedule_delayed_work(&osdc->osds_timeout_work,
2099 round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ));
2102 osdc->req_mempool = mempool_create_kmalloc_pool(10,
2103 sizeof(struct ceph_osd_request));
2104 if (!osdc->req_mempool)
2107 err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP,
2108 OSD_OP_FRONT_LEN, 10, true,
2112 err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY,
2113 OSD_OPREPLY_FRONT_LEN, 10, true,
2118 osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify");
2119 if (IS_ERR(osdc->notify_wq)) {
2120 err = PTR_ERR(osdc->notify_wq);
2121 osdc->notify_wq = NULL;
2127 ceph_msgpool_destroy(&osdc->msgpool_op);
2129 mempool_destroy(osdc->req_mempool);
2134 void ceph_osdc_stop(struct ceph_osd_client *osdc)
2136 flush_workqueue(osdc->notify_wq);
2137 destroy_workqueue(osdc->notify_wq);
2138 cancel_delayed_work_sync(&osdc->timeout_work);
2139 cancel_delayed_work_sync(&osdc->osds_timeout_work);
2141 ceph_osdmap_destroy(osdc->osdmap);
2142 osdc->osdmap = NULL;
2144 remove_all_osds(osdc);
2145 mempool_destroy(osdc->req_mempool);
2146 ceph_msgpool_destroy(&osdc->msgpool_op);
2147 ceph_msgpool_destroy(&osdc->msgpool_op_reply);
2151 * Read some contiguous pages. If we cross a stripe boundary, shorten
2152 * *plen. Return number of bytes read, or error.
2154 int ceph_osdc_readpages(struct ceph_osd_client *osdc,
2155 struct ceph_vino vino, struct ceph_file_layout *layout,
2157 u32 truncate_seq, u64 truncate_size,
2158 struct page **pages, int num_pages, int page_align)
2160 struct ceph_osd_request *req;
2163 dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino,
2164 vino.snap, off, *plen);
2165 req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1,
2166 CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ,
2167 NULL, truncate_seq, truncate_size,
2170 return PTR_ERR(req);
2172 /* it may be a short read due to an object boundary */
2174 ceph_osd_data_pages_init(&req->r_data_in, pages, *plen, page_align,
2177 dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n",
2178 off, *plen, *plen, page_align);
2180 ceph_osdc_build_request(req, off, NULL, vino.snap, NULL);
2182 rc = ceph_osdc_start_request(osdc, req, false);
2184 rc = ceph_osdc_wait_request(osdc, req);
2186 ceph_osdc_put_request(req);
2187 dout("readpages result %d\n", rc);
2190 EXPORT_SYMBOL(ceph_osdc_readpages);
2193 * do a synchronous write on N pages
2195 int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino,
2196 struct ceph_file_layout *layout,
2197 struct ceph_snap_context *snapc,
2199 u32 truncate_seq, u64 truncate_size,
2200 struct timespec *mtime,
2201 struct page **pages, int num_pages)
2203 struct ceph_osd_request *req;
2205 int page_align = off & ~PAGE_MASK;
2207 BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */
2208 req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1,
2210 CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE,
2211 snapc, truncate_seq, truncate_size,
2214 return PTR_ERR(req);
2216 /* it may be a short write due to an object boundary */
2217 ceph_osd_data_pages_init(&req->r_data_out, pages, len, page_align,
2219 dout("writepages %llu~%llu (%llu bytes)\n", off, len, len);
2221 ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime);
2223 rc = ceph_osdc_start_request(osdc, req, true);
2225 rc = ceph_osdc_wait_request(osdc, req);
2227 ceph_osdc_put_request(req);
2230 dout("writepages result %d\n", rc);
2233 EXPORT_SYMBOL(ceph_osdc_writepages);
2236 * handle incoming message
2238 static void dispatch(struct ceph_connection *con, struct ceph_msg *msg)
2240 struct ceph_osd *osd = con->private;
2241 struct ceph_osd_client *osdc;
2242 int type = le16_to_cpu(msg->hdr.type);
2249 case CEPH_MSG_OSD_MAP:
2250 ceph_osdc_handle_map(osdc, msg);
2252 case CEPH_MSG_OSD_OPREPLY:
2253 handle_reply(osdc, msg, con);
2255 case CEPH_MSG_WATCH_NOTIFY:
2256 handle_watch_notify(osdc, msg);
2260 pr_err("received unknown message type %d %s\n", type,
2261 ceph_msg_type_name(type));
2268 * lookup and return message for incoming reply. set up reply message
2271 static struct ceph_msg *get_reply(struct ceph_connection *con,
2272 struct ceph_msg_header *hdr,
2275 struct ceph_osd *osd = con->private;
2276 struct ceph_osd_client *osdc = osd->o_osdc;
2278 struct ceph_osd_request *req;
2279 int front = le32_to_cpu(hdr->front_len);
2280 int data_len = le32_to_cpu(hdr->data_len);
2283 tid = le64_to_cpu(hdr->tid);
2284 mutex_lock(&osdc->request_mutex);
2285 req = __lookup_request(osdc, tid);
2289 dout("get_reply unknown tid %llu from osd%d\n", tid,
2294 if (req->r_reply->con)
2295 dout("%s revoking msg %p from old con %p\n", __func__,
2296 req->r_reply, req->r_reply->con);
2297 ceph_msg_revoke_incoming(req->r_reply);
2299 if (front > req->r_reply->front.iov_len) {
2300 pr_warning("get_reply front %d > preallocated %d\n",
2301 front, (int)req->r_reply->front.iov_len);
2302 m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false);
2305 ceph_msg_put(req->r_reply);
2308 m = ceph_msg_get(req->r_reply);
2311 struct ceph_osd_data *osd_data = &req->r_data_in;
2313 if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) {
2314 if (osd_data->pages &&
2315 unlikely(osd_data->length < data_len)) {
2317 pr_warning("tid %lld reply has %d bytes "
2318 "we had only %llu bytes ready\n",
2319 tid, data_len, osd_data->length);
2328 dout("get_reply tid %lld %p\n", tid, m);
2331 mutex_unlock(&osdc->request_mutex);
2336 static struct ceph_msg *alloc_msg(struct ceph_connection *con,
2337 struct ceph_msg_header *hdr,
2340 struct ceph_osd *osd = con->private;
2341 int type = le16_to_cpu(hdr->type);
2342 int front = le32_to_cpu(hdr->front_len);
2346 case CEPH_MSG_OSD_MAP:
2347 case CEPH_MSG_WATCH_NOTIFY:
2348 return ceph_msg_new(type, front, GFP_NOFS, false);
2349 case CEPH_MSG_OSD_OPREPLY:
2350 return get_reply(con, hdr, skip);
2352 pr_info("alloc_msg unexpected msg type %d from osd%d\n", type,
2360 * Wrappers to refcount containing ceph_osd struct
2362 static struct ceph_connection *get_osd_con(struct ceph_connection *con)
2364 struct ceph_osd *osd = con->private;
2370 static void put_osd_con(struct ceph_connection *con)
2372 struct ceph_osd *osd = con->private;
2380 * Note: returned pointer is the address of a structure that's
2381 * managed separately. Caller must *not* attempt to free it.
2383 static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con,
2384 int *proto, int force_new)
2386 struct ceph_osd *o = con->private;
2387 struct ceph_osd_client *osdc = o->o_osdc;
2388 struct ceph_auth_client *ac = osdc->client->monc.auth;
2389 struct ceph_auth_handshake *auth = &o->o_auth;
2391 if (force_new && auth->authorizer) {
2392 ceph_auth_destroy_authorizer(ac, auth->authorizer);
2393 auth->authorizer = NULL;
2395 if (!auth->authorizer) {
2396 int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD,
2399 return ERR_PTR(ret);
2401 int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD,
2404 return ERR_PTR(ret);
2406 *proto = ac->protocol;
2412 static int verify_authorizer_reply(struct ceph_connection *con, int len)
2414 struct ceph_osd *o = con->private;
2415 struct ceph_osd_client *osdc = o->o_osdc;
2416 struct ceph_auth_client *ac = osdc->client->monc.auth;
2418 return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len);
2421 static int invalidate_authorizer(struct ceph_connection *con)
2423 struct ceph_osd *o = con->private;
2424 struct ceph_osd_client *osdc = o->o_osdc;
2425 struct ceph_auth_client *ac = osdc->client->monc.auth;
2427 ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD);
2428 return ceph_monc_validate_auth(&osdc->client->monc);
2431 static const struct ceph_connection_operations osd_con_ops = {
2434 .dispatch = dispatch,
2435 .get_authorizer = get_authorizer,
2436 .verify_authorizer_reply = verify_authorizer_reply,
2437 .invalidate_authorizer = invalidate_authorizer,
2438 .alloc_msg = alloc_msg,