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libceph: no more kick_requests() race
[linux-2.6-block.git] / net / ceph / osd_client.c
CommitLineData
3d14c5d2 1#include <linux/ceph/ceph_debug.h>
f24e9980 2
3d14c5d2 3#include <linux/module.h>
f24e9980
SW		 4#include <linux/err.h>
5#include <linux/highmem.h>
6#include <linux/mm.h>
7#include <linux/pagemap.h>
8#include <linux/slab.h>
9#include <linux/uaccess.h>
68b4476b
YS		 10#ifdef CONFIG_BLOCK
11#include <linux/bio.h>
12#endif
f24e9980 13
3d14c5d2
YS		 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>
f24e9980 20
c16e7869
SW		 21#define OSD_OP_FRONT_LEN 4096
22#define OSD_OPREPLY_FRONT_LEN 512
0d59ab81 23
9e32789f 24static const struct ceph_connection_operations osd_con_ops;
f24e9980 25
f9d25199 26static void __send_queued(struct ceph_osd_client *osdc);
6f6c7006 27static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd);
a40c4f10
YS		 28static void __register_request(struct ceph_osd_client *osdc,
29 struct ceph_osd_request *req);
30static void __unregister_linger_request(struct ceph_osd_client *osdc,
31 struct ceph_osd_request *req);
56e925b6
SW		 32static void __send_request(struct ceph_osd_client *osdc,
33 struct ceph_osd_request *req);
f24e9980 34
68b4476b
YS		 35static int op_has_extent(int op)
36{
37 return (op == CEPH_OSD_OP_READ ||
38 op == CEPH_OSD_OP_WRITE);
39}
40
f24e9980
SW		 41/*
42 * Implement client access to distributed object storage cluster.
43 *
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
48 * access to storage.
49 *
50 * Cluster membership and the mapping of data objects onto storage devices
51 * are described by the osd map.
52 *
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.
57 */
58
59/*
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
62 * object boundary.
63 *
64 * fill osd op in request message.
65 */
dbe0fc41 66static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen,
47a05811 67 struct ceph_osd_req_op *op, u64 *bno)
f24e9980 68{
60e56f13 69 u64 orig_len = *plen;
60e56f13
AE		 70 u64 objoff = 0;
71 u64 objlen = 0;
d63b77f4 72 int r;
f24e9980 73
60e56f13 74 /* object extent? */
47a05811 75 r = ceph_calc_file_object_mapping(layout, off, orig_len, bno,
60e56f13 76 &objoff, &objlen);
d63b77f4
SW		 77 if (r < 0)
78 return r;
60e56f13
AE		 79 if (objlen < orig_len) {
80 *plen = objlen;
81 dout(" skipping last %llu, final file extent %llu~%llu\n",
82 orig_len - *plen, off, *plen);
83 }
84
85 if (op_has_extent(op->op)) {
86 u32 osize = le32_to_cpu(layout->fl_object_size);
87 op->extent.offset = objoff;
88 op->extent.length = objlen;
89 if (op->extent.truncate_size <= off - objoff) {
90 op->extent.truncate_size = 0;
91 } else {
92 op->extent.truncate_size -= off - objoff;
93 if (op->extent.truncate_size > osize)
94 op->extent.truncate_size = osize;
95 }
96 }
60e56f13
AE		 97 if (op->op == CEPH_OSD_OP_WRITE)
98 op->payload_len = *plen;
99
60cf5992 100 dout("calc_layout bno=%llx %llu~%llu\n", *bno, objoff, objlen);
f24e9980 101
3ff5f385 102 return 0;
f24e9980
SW		 103}
104
f24e9980
SW		 105/*
106 * requests
107 */
415e49a9 108void ceph_osdc_release_request(struct kref *kref)
f24e9980 109{
e0c59487 110 int num_pages;
415e49a9
SW		 111 struct ceph_osd_request *req = container_of(kref,
112 struct ceph_osd_request,
113 r_kref);
114
115 if (req->r_request)
116 ceph_msg_put(req->r_request);
0d59ab81 117 if (req->r_con_filling_msg) {
9cbb1d72
AE		 118 dout("%s revoking msg %p from con %p\n", __func__,
119 req->r_reply, req->r_con_filling_msg);
8921d114 120 ceph_msg_revoke_incoming(req->r_reply);
0d47766f 121 req->r_con_filling_msg->ops->put(req->r_con_filling_msg);
9cbb1d72 122 req->r_con_filling_msg = NULL;
350b1c32 123 }
ab8cb34a
AE		 124 if (req->r_reply)
125 ceph_msg_put(req->r_reply);
0fff87ec
AE		 126
127 if (req->r_data_in.type == CEPH_OSD_DATA_TYPE_PAGES &&
e0c59487
AE		 128 req->r_data_in.own_pages) {
129 num_pages = calc_pages_for((u64)req->r_data_in.alignment,
130 (u64)req->r_data_in.length);
131 ceph_release_page_vector(req->r_data_in.pages, num_pages);
132 }
0fff87ec 133 if (req->r_data_out.type == CEPH_OSD_DATA_TYPE_PAGES &&
e0c59487
AE		 134 req->r_data_out.own_pages) {
135 num_pages = calc_pages_for((u64)req->r_data_out.alignment,
136 (u64)req->r_data_out.length);
137 ceph_release_page_vector(req->r_data_out.pages, num_pages);
138 }
0fff87ec 139
415e49a9
SW		 140 ceph_put_snap_context(req->r_snapc);
141 if (req->r_mempool)
142 mempool_free(req, req->r_osdc->req_mempool);
143 else
144 kfree(req);
f24e9980 145}
3d14c5d2 146EXPORT_SYMBOL(ceph_osdc_release_request);
68b4476b 147
3499e8a5 148struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
f24e9980 149 struct ceph_snap_context *snapc,
1b83bef2 150 unsigned int num_ops,
3499e8a5 151 bool use_mempool,
54a54007 152 gfp_t gfp_flags)
f24e9980
SW		 153{
154 struct ceph_osd_request *req;
155 struct ceph_msg *msg;
1b83bef2
SW		 156 size_t msg_size;
157
158 msg_size = 4 + 4 + 8 + 8 + 4+8;
159 msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */
160 msg_size += 1 + 8 + 4 + 4; /* pg_t */
161 msg_size += 4 + MAX_OBJ_NAME_SIZE;
162 msg_size += 2 + num_ops*sizeof(struct ceph_osd_op);
163 msg_size += 8; /* snapid */
164 msg_size += 8; /* snap_seq */
165 msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */
166 msg_size += 4;
f24e9980
SW		 167
168 if (use_mempool) {
3499e8a5 169 req = mempool_alloc(osdc->req_mempool, gfp_flags);
f24e9980
SW		 170 memset(req, 0, sizeof(*req));
171 } else {
3499e8a5 172 req = kzalloc(sizeof(*req), gfp_flags);
f24e9980
SW		 173 }
174 if (req == NULL)
a79832f2 175 return NULL;
f24e9980 176
f24e9980
SW		 177 req->r_osdc = osdc;
178 req->r_mempool = use_mempool;
68b4476b 179
415e49a9 180 kref_init(&req->r_kref);
f24e9980
SW		 181 init_completion(&req->r_completion);
182 init_completion(&req->r_safe_completion);
a978fa20 183 RB_CLEAR_NODE(&req->r_node);
f24e9980 184 INIT_LIST_HEAD(&req->r_unsafe_item);
a40c4f10
YS		 185 INIT_LIST_HEAD(&req->r_linger_item);
186 INIT_LIST_HEAD(&req->r_linger_osd);
935b639a 187 INIT_LIST_HEAD(&req->r_req_lru_item);
cd43045c
SW		 188 INIT_LIST_HEAD(&req->r_osd_item);
189
c16e7869
SW		 190 /* create reply message */
191 if (use_mempool)
192 msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0);
193 else
194 msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY,
b61c2763 195 OSD_OPREPLY_FRONT_LEN, gfp_flags, true);
a79832f2 196 if (!msg) {
c16e7869 197 ceph_osdc_put_request(req);
a79832f2 198 return NULL;
c16e7869
SW		 199 }
200 req->r_reply = msg;
201
0fff87ec
AE		 202 req->r_data_in.type = CEPH_OSD_DATA_TYPE_NONE;
203 req->r_data_out.type = CEPH_OSD_DATA_TYPE_NONE;
d50b409f 204
c16e7869 205 /* create request message; allow space for oid */
f24e9980 206 if (use_mempool)
8f3bc053 207 msg = ceph_msgpool_get(&osdc->msgpool_op, 0);
f24e9980 208 else
b61c2763 209 msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true);
a79832f2 210 if (!msg) {
f24e9980 211 ceph_osdc_put_request(req);
a79832f2 212 return NULL;
f24e9980 213 }
68b4476b 214
f24e9980 215 memset(msg->front.iov_base, 0, msg->front.iov_len);
3499e8a5
YS		 216
217 req->r_request = msg;
3499e8a5
YS		 218
219 return req;
220}
3d14c5d2 221EXPORT_SYMBOL(ceph_osdc_alloc_request);
3499e8a5 222
175face2 223static u64 osd_req_encode_op(struct ceph_osd_request *req,
68b4476b
YS		 224 struct ceph_osd_op *dst,
225 struct ceph_osd_req_op *src)
226{
175face2 227 u64 out_data_len = 0;
95e072eb 228 struct ceph_pagelist *pagelist;
175face2 229
68b4476b
YS		 230 dst->op = cpu_to_le16(src->op);
231
065a68f9 232 switch (src->op) {
fbfab539
AE		 233 case CEPH_OSD_OP_STAT:
234 break;
68b4476b
YS		 235 case CEPH_OSD_OP_READ:
236 case CEPH_OSD_OP_WRITE:
175face2
AE		 237 if (src->op == CEPH_OSD_OP_WRITE)
238 out_data_len = src->extent.length;
239 dst->extent.offset = cpu_to_le64(src->extent.offset);
240 dst->extent.length = cpu_to_le64(src->extent.length);
68b4476b
YS		 241 dst->extent.truncate_size =
242 cpu_to_le64(src->extent.truncate_size);
243 dst->extent.truncate_seq =
244 cpu_to_le32(src->extent.truncate_seq);
245 break;
ae1533b6 246 case CEPH_OSD_OP_CALL:
95e072eb
AE		 247 pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS);
248 BUG_ON(!pagelist);
249 ceph_pagelist_init(pagelist);
250
ae1533b6
YS		 251 dst->cls.class_len = src->cls.class_len;
252 dst->cls.method_len = src->cls.method_len;
253 dst->cls.indata_len = cpu_to_le32(src->cls.indata_len);
95e072eb 254 ceph_pagelist_append(pagelist, src->cls.class_name,
ae1533b6 255 src->cls.class_len);
95e072eb 256 ceph_pagelist_append(pagelist, src->cls.method_name,
ae1533b6 257 src->cls.method_len);
95e072eb 258 ceph_pagelist_append(pagelist, src->cls.indata,
ae1533b6 259 src->cls.indata_len);
95e072eb
AE		 260
261 req->r_data_out.type = CEPH_OSD_DATA_TYPE_PAGELIST;
262 req->r_data_out.pagelist = pagelist;
263 out_data_len = pagelist->length;
ae1533b6 264 break;
68b4476b
YS		 265 case CEPH_OSD_OP_STARTSYNC:
266 break;
a40c4f10
YS		 267 case CEPH_OSD_OP_NOTIFY_ACK:
268 case CEPH_OSD_OP_WATCH:
269 dst->watch.cookie = cpu_to_le64(src->watch.cookie);
270 dst->watch.ver = cpu_to_le64(src->watch.ver);
271 dst->watch.flag = src->watch.flag;
272 break;
68b4476b 273 default:
8f63ca2d 274 pr_err("unrecognized osd opcode %d\n", src->op);
68b4476b
YS		 275 WARN_ON(1);
276 break;
4c46459c
AE		 277 case CEPH_OSD_OP_MAPEXT:
278 case CEPH_OSD_OP_MASKTRUNC:
279 case CEPH_OSD_OP_SPARSE_READ:
a9f36c3e 280 case CEPH_OSD_OP_NOTIFY:
4c46459c
AE		 281 case CEPH_OSD_OP_ASSERT_VER:
282 case CEPH_OSD_OP_WRITEFULL:
283 case CEPH_OSD_OP_TRUNCATE:
284 case CEPH_OSD_OP_ZERO:
285 case CEPH_OSD_OP_DELETE:
286 case CEPH_OSD_OP_APPEND:
287 case CEPH_OSD_OP_SETTRUNC:
288 case CEPH_OSD_OP_TRIMTRUNC:
289 case CEPH_OSD_OP_TMAPUP:
290 case CEPH_OSD_OP_TMAPPUT:
291 case CEPH_OSD_OP_TMAPGET:
292 case CEPH_OSD_OP_CREATE:
a9f36c3e 293 case CEPH_OSD_OP_ROLLBACK:
4c46459c
AE		 294 case CEPH_OSD_OP_OMAPGETKEYS:
295 case CEPH_OSD_OP_OMAPGETVALS:
296 case CEPH_OSD_OP_OMAPGETHEADER:
297 case CEPH_OSD_OP_OMAPGETVALSBYKEYS:
298 case CEPH_OSD_OP_MODE_RD:
299 case CEPH_OSD_OP_OMAPSETVALS:
300 case CEPH_OSD_OP_OMAPSETHEADER:
301 case CEPH_OSD_OP_OMAPCLEAR:
302 case CEPH_OSD_OP_OMAPRMKEYS:
303 case CEPH_OSD_OP_OMAP_CMP:
304 case CEPH_OSD_OP_CLONERANGE:
305 case CEPH_OSD_OP_ASSERT_SRC_VERSION:
306 case CEPH_OSD_OP_SRC_CMPXATTR:
a9f36c3e 307 case CEPH_OSD_OP_GETXATTR:
4c46459c 308 case CEPH_OSD_OP_GETXATTRS:
a9f36c3e
AE		 309 case CEPH_OSD_OP_CMPXATTR:
310 case CEPH_OSD_OP_SETXATTR:
4c46459c
AE		 311 case CEPH_OSD_OP_SETXATTRS:
312 case CEPH_OSD_OP_RESETXATTRS:
313 case CEPH_OSD_OP_RMXATTR:
314 case CEPH_OSD_OP_PULL:
315 case CEPH_OSD_OP_PUSH:
316 case CEPH_OSD_OP_BALANCEREADS:
317 case CEPH_OSD_OP_UNBALANCEREADS:
318 case CEPH_OSD_OP_SCRUB:
319 case CEPH_OSD_OP_SCRUB_RESERVE:
320 case CEPH_OSD_OP_SCRUB_UNRESERVE:
321 case CEPH_OSD_OP_SCRUB_STOP:
322 case CEPH_OSD_OP_SCRUB_MAP:
323 case CEPH_OSD_OP_WRLOCK:
324 case CEPH_OSD_OP_WRUNLOCK:
325 case CEPH_OSD_OP_RDLOCK:
326 case CEPH_OSD_OP_RDUNLOCK:
327 case CEPH_OSD_OP_UPLOCK:
328 case CEPH_OSD_OP_DNLOCK:
329 case CEPH_OSD_OP_PGLS:
330 case CEPH_OSD_OP_PGLS_FILTER:
331 pr_err("unsupported osd opcode %s\n",
8f63ca2d 332 ceph_osd_op_name(src->op));
4c46459c
AE		 333 WARN_ON(1);
334 break;
68b4476b
YS		 335 }
336 dst->payload_len = cpu_to_le32(src->payload_len);
175face2
AE		 337
338 return out_data_len;
68b4476b
YS		 339}
340
3499e8a5
YS		 341/*
342 * build new request AND message
343 *
344 */
345void ceph_osdc_build_request(struct ceph_osd_request *req,
175face2 346 u64 off, unsigned int num_ops,
68b4476b 347 struct ceph_osd_req_op *src_ops,
4d6b250b 348 struct ceph_snap_context *snapc, u64 snap_id,
af77f26c 349 struct timespec *mtime)
3499e8a5
YS		 350{
351 struct ceph_msg *msg = req->r_request;
68b4476b 352 struct ceph_osd_req_op *src_op;
3499e8a5 353 void *p;
1b83bef2 354 size_t msg_size;
3499e8a5 355 int flags = req->r_flags;
f44246e3 356 u64 data_len;
68b4476b 357 int i;
3499e8a5 358
1b83bef2
SW		 359 req->r_num_ops = num_ops;
360 req->r_snapid = snap_id;
f24e9980
SW		 361 req->r_snapc = ceph_get_snap_context(snapc);
362
1b83bef2
SW		 363 /* encode request */
364 msg->hdr.version = cpu_to_le16(4);
365
366 p = msg->front.iov_base;
367 ceph_encode_32(&p, 1); /* client_inc is always 1 */
368 req->r_request_osdmap_epoch = p;
369 p += 4;
370 req->r_request_flags = p;
371 p += 4;
372 if (req->r_flags & CEPH_OSD_FLAG_WRITE)
373 ceph_encode_timespec(p, mtime);
374 p += sizeof(struct ceph_timespec);
375 req->r_request_reassert_version = p;
376 p += sizeof(struct ceph_eversion); /* will get filled in */
377
378 /* oloc */
379 ceph_encode_8(&p, 4);
380 ceph_encode_8(&p, 4);
381 ceph_encode_32(&p, 8 + 4 + 4);
382 req->r_request_pool = p;
383 p += 8;
384 ceph_encode_32(&p, -1); /* preferred */
385 ceph_encode_32(&p, 0); /* key len */
386
387 ceph_encode_8(&p, 1);
388 req->r_request_pgid = p;
389 p += 8 + 4;
390 ceph_encode_32(&p, -1); /* preferred */
391
392 /* oid */
393 ceph_encode_32(&p, req->r_oid_len);
af77f26c 394 memcpy(p, req->r_oid, req->r_oid_len);
1b83bef2 395 dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len);
af77f26c 396 p += req->r_oid_len;
f24e9980 397
175face2 398 /* ops--can imply data */
1b83bef2 399 ceph_encode_16(&p, num_ops);
68b4476b 400 src_op = src_ops;
1b83bef2 401 req->r_request_ops = p;
175face2 402 data_len = 0;
1b83bef2 403 for (i = 0; i < num_ops; i++, src_op++) {
175face2 404 data_len += osd_req_encode_op(req, p, src_op);
1b83bef2
SW		 405 p += sizeof(struct ceph_osd_op);
406 }
68b4476b 407
1b83bef2
SW		 408 /* snaps */
409 ceph_encode_64(&p, req->r_snapid);
410 ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0);
411 ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0);
412 if (req->r_snapc) {
f24e9980 413 for (i = 0; i < snapc->num_snaps; i++) {
1b83bef2 414 ceph_encode_64(&p, req->r_snapc->snaps[i]);
f24e9980
SW		 415 }
416 }
417
1b83bef2
SW		 418 req->r_request_attempts = p;
419 p += 4;
420
175face2
AE		 421 /* data */
422 if (flags & CEPH_OSD_FLAG_WRITE)
68b4476b 423 req->r_request->hdr.data_off = cpu_to_le16(off);
f44246e3 424 req->r_request->hdr.data_len = cpu_to_le32(data_len);
c5c6b19d 425
f24e9980 426 BUG_ON(p > msg->front.iov_base + msg->front.iov_len);
6f863e71
SW		 427 msg_size = p - msg->front.iov_base;
428 msg->front.iov_len = msg_size;
429 msg->hdr.front_len = cpu_to_le32(msg_size);
1b83bef2
SW		 430
431 dout("build_request msg_size was %d num_ops %d\n", (int)msg_size,
432 num_ops);
3499e8a5
YS		 433 return;
434}
3d14c5d2 435EXPORT_SYMBOL(ceph_osdc_build_request);
3499e8a5
YS		 436
437/*
438 * build new request AND message, calculate layout, and adjust file
439 * extent as needed.
440 *
441 * if the file was recently truncated, we include information about its
442 * old and new size so that the object can be updated appropriately. (we
443 * avoid synchronously deleting truncated objects because it's slow.)
444 *
445 * if @do_sync, include a 'startsync' command so that the osd will flush
446 * data quickly.
447 */
448struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
449 struct ceph_file_layout *layout,
450 struct ceph_vino vino,
451 u64 off, u64 *plen,
452 int opcode, int flags,
453 struct ceph_snap_context *snapc,
454 int do_sync,
455 u32 truncate_seq,
456 u64 truncate_size,
457 struct timespec *mtime,
153e5167 458 bool use_mempool)
3499e8a5 459{
ae7ca4a3 460 struct ceph_osd_req_op ops[2];
68b4476b 461 struct ceph_osd_request *req;
ae7ca4a3 462 unsigned int num_op = 1;
47a05811 463 u64 bno = 0;
6816282d 464 int r;
68b4476b 465
ae7ca4a3
AE		 466 memset(&ops, 0, sizeof ops);
467
68b4476b
YS		 468 ops[0].op = opcode;
469 ops[0].extent.truncate_seq = truncate_seq;
470 ops[0].extent.truncate_size = truncate_size;
68b4476b
YS		 471
472 if (do_sync) {
473 ops[1].op = CEPH_OSD_OP_STARTSYNC;
ae7ca4a3
AE		 474 num_op++;
475 }
68b4476b 476
ae7ca4a3
AE		 477 req = ceph_osdc_alloc_request(osdc, snapc, num_op, use_mempool,
478 GFP_NOFS);
4ad12621 479 if (!req)
6816282d 480 return ERR_PTR(-ENOMEM);
d178a9e7 481 req->r_flags = flags;
3499e8a5
YS		 482
483 /* calculate max write size */
60cf5992 484 r = calc_layout(layout, off, plen, ops, &bno);
3ff5f385
AE		 485 if (r < 0) {
486 ceph_osdc_put_request(req);
6816282d 487 return ERR_PTR(r);
3ff5f385 488 }
3499e8a5
YS		 489 req->r_file_layout = *layout; /* keep a copy */
490
dbe0fc41
AE		 491 snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno);
492 req->r_oid_len = strlen(req->r_oid);
493
175face2 494 ceph_osdc_build_request(req, off, num_op, ops,
ae7ca4a3 495 snapc, vino.snap, mtime);
3499e8a5 496
f24e9980
SW		 497 return req;
498}
3d14c5d2 499EXPORT_SYMBOL(ceph_osdc_new_request);
f24e9980
SW		 500
501/*
502 * We keep osd requests in an rbtree, sorted by ->r_tid.
503 */
504static void __insert_request(struct ceph_osd_client *osdc,
505 struct ceph_osd_request *new)
506{
507 struct rb_node **p = &osdc->requests.rb_node;
508 struct rb_node *parent = NULL;
509 struct ceph_osd_request *req = NULL;
510
511 while (*p) {
512 parent = *p;
513 req = rb_entry(parent, struct ceph_osd_request, r_node);
514 if (new->r_tid < req->r_tid)
515 p = &(*p)->rb_left;
516 else if (new->r_tid > req->r_tid)
517 p = &(*p)->rb_right;
518 else
519 BUG();
520 }
521
522 rb_link_node(&new->r_node, parent, p);
523 rb_insert_color(&new->r_node, &osdc->requests);
524}
525
526static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc,
527 u64 tid)
528{
529 struct ceph_osd_request *req;
530 struct rb_node *n = osdc->requests.rb_node;
531
532 while (n) {
533 req = rb_entry(n, struct ceph_osd_request, r_node);
534 if (tid < req->r_tid)
535 n = n->rb_left;
536 else if (tid > req->r_tid)
537 n = n->rb_right;
538 else
539 return req;
540 }
541 return NULL;
542}
543
544static struct ceph_osd_request *
545__lookup_request_ge(struct ceph_osd_client *osdc,
546 u64 tid)
547{
548 struct ceph_osd_request *req;
549 struct rb_node *n = osdc->requests.rb_node;
550
551 while (n) {
552 req = rb_entry(n, struct ceph_osd_request, r_node);
553 if (tid < req->r_tid) {
554 if (!n->rb_left)
555 return req;
556 n = n->rb_left;
557 } else if (tid > req->r_tid) {
558 n = n->rb_right;
559 } else {
560 return req;
561 }
562 }
563 return NULL;
564}
565
6f6c7006
SW		 566/*
567 * Resubmit requests pending on the given osd.
568 */
569static void __kick_osd_requests(struct ceph_osd_client *osdc,
570 struct ceph_osd *osd)
571{
a40c4f10 572 struct ceph_osd_request *req, *nreq;
6f6c7006
SW		 573 int err;
574
575 dout("__kick_osd_requests osd%d\n", osd->o_osd);
576 err = __reset_osd(osdc, osd);
685a7555 577 if (err)
6f6c7006
SW		 578 return;
579
580 list_for_each_entry(req, &osd->o_requests, r_osd_item) {
581 list_move(&req->r_req_lru_item, &osdc->req_unsent);
582 dout("requeued %p tid %llu osd%d\n", req, req->r_tid,
583 osd->o_osd);
a40c4f10
YS		 584 if (!req->r_linger)
585 req->r_flags |= CEPH_OSD_FLAG_RETRY;
586 }
587
588 list_for_each_entry_safe(req, nreq, &osd->o_linger_requests,
589 r_linger_osd) {
77f38e0e
SW		 590 /*
591 * reregister request prior to unregistering linger so
592 * that r_osd is preserved.
593 */
594 BUG_ON(!list_empty(&req->r_req_lru_item));
a40c4f10 595 __register_request(osdc, req);
77f38e0e
SW		 596 list_add(&req->r_req_lru_item, &osdc->req_unsent);
597 list_add(&req->r_osd_item, &req->r_osd->o_requests);
598 __unregister_linger_request(osdc, req);
a40c4f10
YS		 599 dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid,
600 osd->o_osd);
6f6c7006
SW		 601 }
602}
603
f24e9980 604/*
81b024e7 605 * If the osd connection drops, we need to resubmit all requests.
f24e9980
SW		 606 */
607static void osd_reset(struct ceph_connection *con)
608{
609 struct ceph_osd *osd = con->private;
610 struct ceph_osd_client *osdc;
611
612 if (!osd)
613 return;
614 dout("osd_reset osd%d\n", osd->o_osd);
615 osdc = osd->o_osdc;
f24e9980 616 down_read(&osdc->map_sem);
83aff95e
SW		 617 mutex_lock(&osdc->request_mutex);
618 __kick_osd_requests(osdc, osd);
f9d25199 619 __send_queued(osdc);
83aff95e 620 mutex_unlock(&osdc->request_mutex);
f24e9980
SW		 621 up_read(&osdc->map_sem);
622}
623
624/*
625 * Track open sessions with osds.
626 */
e10006f8 627static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum)
f24e9980
SW		 628{
629 struct ceph_osd *osd;
630
631 osd = kzalloc(sizeof(*osd), GFP_NOFS);
632 if (!osd)
633 return NULL;
634
635 atomic_set(&osd->o_ref, 1);
636 osd->o_osdc = osdc;
e10006f8 637 osd->o_osd = onum;
f407731d 638 RB_CLEAR_NODE(&osd->o_node);
f24e9980 639 INIT_LIST_HEAD(&osd->o_requests);
a40c4f10 640 INIT_LIST_HEAD(&osd->o_linger_requests);
f5a2041b 641 INIT_LIST_HEAD(&osd->o_osd_lru);
f24e9980
SW		 642 osd->o_incarnation = 1;
643
b7a9e5dd 644 ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr);
4e7a5dcd 645
422d2cb8 646 INIT_LIST_HEAD(&osd->o_keepalive_item);
f24e9980
SW		 647 return osd;
648}
649
650static struct ceph_osd *get_osd(struct ceph_osd *osd)
651{
652 if (atomic_inc_not_zero(&osd->o_ref)) {
653 dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1,
654 atomic_read(&osd->o_ref));
655 return osd;
656 } else {
657 dout("get_osd %p FAIL\n", osd);
658 return NULL;
659 }
660}
661
662static void put_osd(struct ceph_osd *osd)
663{
664 dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref),
665 atomic_read(&osd->o_ref) - 1);
a255651d 666 if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) {
79494d1b
SW		 667 struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth;
668
27859f97 669 ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer);
f24e9980 670 kfree(osd);
79494d1b 671 }
f24e9980
SW		 672}
673
674/*
675 * remove an osd from our map
676 */
f5a2041b 677static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd)
f24e9980 678{
f5a2041b 679 dout("__remove_osd %p\n", osd);
f24e9980
SW		 680 BUG_ON(!list_empty(&osd->o_requests));
681 rb_erase(&osd->o_node, &osdc->osds);
f5a2041b 682 list_del_init(&osd->o_osd_lru);
f24e9980
SW		 683 ceph_con_close(&osd->o_con);
684 put_osd(osd);
685}
686
aca420bc
SW		 687static void remove_all_osds(struct ceph_osd_client *osdc)
688{
048a9d2d 689 dout("%s %p\n", __func__, osdc);
aca420bc
SW		 690 mutex_lock(&osdc->request_mutex);
691 while (!RB_EMPTY_ROOT(&osdc->osds)) {
692 struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds),
693 struct ceph_osd, o_node);
694 __remove_osd(osdc, osd);
695 }
696 mutex_unlock(&osdc->request_mutex);
697}
698
f5a2041b
YS		 699static void __move_osd_to_lru(struct ceph_osd_client *osdc,
700 struct ceph_osd *osd)
701{
702 dout("__move_osd_to_lru %p\n", osd);
703 BUG_ON(!list_empty(&osd->o_osd_lru));
704 list_add_tail(&osd->o_osd_lru, &osdc->osd_lru);
3d14c5d2 705 osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ;
f5a2041b
YS		 706}
707
708static void __remove_osd_from_lru(struct ceph_osd *osd)
709{
710 dout("__remove_osd_from_lru %p\n", osd);
711 if (!list_empty(&osd->o_osd_lru))
712 list_del_init(&osd->o_osd_lru);
713}
714
aca420bc 715static void remove_old_osds(struct ceph_osd_client *osdc)
f5a2041b
YS		 716{
717 struct ceph_osd *osd, *nosd;
718
719 dout("__remove_old_osds %p\n", osdc);
720 mutex_lock(&osdc->request_mutex);
721 list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) {
aca420bc 722 if (time_before(jiffies, osd->lru_ttl))
f5a2041b
YS		 723 break;
724 __remove_osd(osdc, osd);
725 }
726 mutex_unlock(&osdc->request_mutex);
727}
728
f24e9980
SW		 729/*
730 * reset osd connect
731 */
f5a2041b 732static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd)
f24e9980 733{
c3acb181 734 struct ceph_entity_addr *peer_addr;
f24e9980 735
f5a2041b 736 dout("__reset_osd %p osd%d\n", osd, osd->o_osd);
a40c4f10
YS		 737 if (list_empty(&osd->o_requests) &&
738 list_empty(&osd->o_linger_requests)) {
f5a2041b 739 __remove_osd(osdc, osd);
c3acb181
AE		 740
741 return -ENODEV;
742 }
743
744 peer_addr = &osdc->osdmap->osd_addr[osd->o_osd];
745 if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) &&
746 !ceph_con_opened(&osd->o_con)) {
747 struct ceph_osd_request *req;
748
87b315a5
SW		 749 dout(" osd addr hasn't changed and connection never opened,"
750 " letting msgr retry");
751 /* touch each r_stamp for handle_timeout()'s benfit */
752 list_for_each_entry(req, &osd->o_requests, r_osd_item)
753 req->r_stamp = jiffies;
c3acb181
AE		 754
755 return -EAGAIN;
f24e9980 756 }
c3acb181
AE		 757
758 ceph_con_close(&osd->o_con);
759 ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr);
760 osd->o_incarnation++;
761
762 return 0;
f24e9980
SW		 763}
764
765static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new)
766{
767 struct rb_node **p = &osdc->osds.rb_node;
768 struct rb_node *parent = NULL;
769 struct ceph_osd *osd = NULL;
770
aca420bc 771 dout("__insert_osd %p osd%d\n", new, new->o_osd);
f24e9980
SW		 772 while (*p) {
773 parent = *p;
774 osd = rb_entry(parent, struct ceph_osd, o_node);
775 if (new->o_osd < osd->o_osd)
776 p = &(*p)->rb_left;
777 else if (new->o_osd > osd->o_osd)
778 p = &(*p)->rb_right;
779 else
780 BUG();
781 }
782
783 rb_link_node(&new->o_node, parent, p);
784 rb_insert_color(&new->o_node, &osdc->osds);
785}
786
787static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o)
788{
789 struct ceph_osd *osd;
790 struct rb_node *n = osdc->osds.rb_node;
791
792 while (n) {
793 osd = rb_entry(n, struct ceph_osd, o_node);
794 if (o < osd->o_osd)
795 n = n->rb_left;
796 else if (o > osd->o_osd)
797 n = n->rb_right;
798 else
799 return osd;
800 }
801 return NULL;
802}
803
422d2cb8
YS		 804static void __schedule_osd_timeout(struct ceph_osd_client *osdc)
805{
806 schedule_delayed_work(&osdc->timeout_work,
3d14c5d2 807 osdc->client->options->osd_keepalive_timeout * HZ);
422d2cb8
YS		 808}
809
810static void __cancel_osd_timeout(struct ceph_osd_client *osdc)
811{
812 cancel_delayed_work(&osdc->timeout_work);
813}
f24e9980
SW		 814
815/*
816 * Register request, assign tid. If this is the first request, set up
817 * the timeout event.
818 */
a40c4f10
YS		 819static void __register_request(struct ceph_osd_client *osdc,
820 struct ceph_osd_request *req)
f24e9980 821{
f24e9980 822 req->r_tid = ++osdc->last_tid;
6df058c0 823 req->r_request->hdr.tid = cpu_to_le64(req->r_tid);
77f38e0e 824 dout("__register_request %p tid %lld\n", req, req->r_tid);
f24e9980
SW		 825 __insert_request(osdc, req);
826 ceph_osdc_get_request(req);
827 osdc->num_requests++;
f24e9980 828 if (osdc->num_requests == 1) {
422d2cb8
YS		 829 dout(" first request, scheduling timeout\n");
830 __schedule_osd_timeout(osdc);
f24e9980 831 }
a40c4f10
YS		 832}
833
f24e9980
SW		 834/*
835 * called under osdc->request_mutex
836 */
837static void __unregister_request(struct ceph_osd_client *osdc,
838 struct ceph_osd_request *req)
839{
35f9f8a0
SW		 840 if (RB_EMPTY_NODE(&req->r_node)) {
841 dout("__unregister_request %p tid %lld not registered\n",
842 req, req->r_tid);
843 return;
844 }
845
f24e9980
SW		 846 dout("__unregister_request %p tid %lld\n", req, req->r_tid);
847 rb_erase(&req->r_node, &osdc->requests);
848 osdc->num_requests--;
849
0ba6478d
SW		 850 if (req->r_osd) {
851 /* make sure the original request isn't in flight. */
6740a845 852 ceph_msg_revoke(req->r_request);
0ba6478d
SW		 853
854 list_del_init(&req->r_osd_item);
a40c4f10
YS		 855 if (list_empty(&req->r_osd->o_requests) &&
856 list_empty(&req->r_osd->o_linger_requests)) {
857 dout("moving osd to %p lru\n", req->r_osd);
f5a2041b 858 __move_osd_to_lru(osdc, req->r_osd);
a40c4f10 859 }
fbdb9190 860 if (list_empty(&req->r_linger_item))
a40c4f10 861 req->r_osd = NULL;
0ba6478d 862 }
f24e9980 863
7d5f2481 864 list_del_init(&req->r_req_lru_item);
f24e9980
SW		 865 ceph_osdc_put_request(req);
866
422d2cb8
YS		 867 if (osdc->num_requests == 0) {
868 dout(" no requests, canceling timeout\n");
869 __cancel_osd_timeout(osdc);
f24e9980
SW		 870 }
871}
872
873/*
874 * Cancel a previously queued request message
875 */
876static void __cancel_request(struct ceph_osd_request *req)
877{
6bc18876 878 if (req->r_sent && req->r_osd) {
6740a845 879 ceph_msg_revoke(req->r_request);
f24e9980
SW		 880 req->r_sent = 0;
881 }
882}
883
a40c4f10
YS		 884static void __register_linger_request(struct ceph_osd_client *osdc,
885 struct ceph_osd_request *req)
886{
887 dout("__register_linger_request %p\n", req);
888 list_add_tail(&req->r_linger_item, &osdc->req_linger);
6194ea89
SW		 889 if (req->r_osd)
890 list_add_tail(&req->r_linger_osd,
891 &req->r_osd->o_linger_requests);
a40c4f10
YS		 892}
893
894static void __unregister_linger_request(struct ceph_osd_client *osdc,
895 struct ceph_osd_request *req)
896{
897 dout("__unregister_linger_request %p\n", req);
61c74035 898 list_del_init(&req->r_linger_item);
a40c4f10 899 if (req->r_osd) {
a40c4f10
YS		 900 list_del_init(&req->r_linger_osd);
901
902 if (list_empty(&req->r_osd->o_requests) &&
903 list_empty(&req->r_osd->o_linger_requests)) {
904 dout("moving osd to %p lru\n", req->r_osd);
905 __move_osd_to_lru(osdc, req->r_osd);
906 }
fbdb9190
SW		 907 if (list_empty(&req->r_osd_item))
908 req->r_osd = NULL;
a40c4f10
YS		 909 }
910}
911
912void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc,
913 struct ceph_osd_request *req)
914{
915 mutex_lock(&osdc->request_mutex);
916 if (req->r_linger) {
917 __unregister_linger_request(osdc, req);
918 ceph_osdc_put_request(req);
919 }
920 mutex_unlock(&osdc->request_mutex);
921}
922EXPORT_SYMBOL(ceph_osdc_unregister_linger_request);
923
924void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
925 struct ceph_osd_request *req)
926{
927 if (!req->r_linger) {
928 dout("set_request_linger %p\n", req);
929 req->r_linger = 1;
930 /*
931 * caller is now responsible for calling
932 * unregister_linger_request
933 */
934 ceph_osdc_get_request(req);
935 }
936}
937EXPORT_SYMBOL(ceph_osdc_set_request_linger);
938
f24e9980
SW		 939/*
940 * Pick an osd (the first 'up' osd in the pg), allocate the osd struct
941 * (as needed), and set the request r_osd appropriately. If there is
25985edc 942 * no up osd, set r_osd to NULL. Move the request to the appropriate list
6f6c7006 943 * (unsent, homeless) or leave on in-flight lru.
f24e9980
SW		 944 *
945 * Return 0 if unchanged, 1 if changed, or negative on error.
946 *
947 * Caller should hold map_sem for read and request_mutex.
948 */
6f6c7006 949static int __map_request(struct ceph_osd_client *osdc,
38d6453c 950 struct ceph_osd_request *req, int force_resend)
f24e9980 951{
5b191d99 952 struct ceph_pg pgid;
d85b7056
SW		 953 int acting[CEPH_PG_MAX_SIZE];
954 int o = -1, num = 0;
f24e9980 955 int err;
f24e9980 956
6f6c7006 957 dout("map_request %p tid %lld\n", req, req->r_tid);
41766f87
AE		 958 err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap,
959 ceph_file_layout_pg_pool(req->r_file_layout));
6f6c7006
SW		 960 if (err) {
961 list_move(&req->r_req_lru_item, &osdc->req_notarget);
f24e9980 962 return err;
6f6c7006 963 }
7740a42f
SW		 964 req->r_pgid = pgid;
965
d85b7056
SW		 966 err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting);
967 if (err > 0) {
968 o = acting[0];
969 num = err;
970 }
f24e9980 971
38d6453c
SW		 972 if ((!force_resend &&
973 req->r_osd && req->r_osd->o_osd == o &&
d85b7056
SW		 974 req->r_sent >= req->r_osd->o_incarnation &&
975 req->r_num_pg_osds == num &&
976 memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) ||
f24e9980
SW		 977 (req->r_osd == NULL && o == -1))
978 return 0; /* no change */
979
5b191d99
SW		 980 dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n",
981 req->r_tid, pgid.pool, pgid.seed, o,
f24e9980
SW		 982 req->r_osd ? req->r_osd->o_osd : -1);
983
d85b7056
SW		 984 /* record full pg acting set */
985 memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num);
986 req->r_num_pg_osds = num;
987
f24e9980
SW		 988 if (req->r_osd) {
989 __cancel_request(req);
990 list_del_init(&req->r_osd_item);
f24e9980
SW		 991 req->r_osd = NULL;
992 }
993
994 req->r_osd = __lookup_osd(osdc, o);
995 if (!req->r_osd && o >= 0) {
c99eb1c7 996 err = -ENOMEM;
e10006f8 997 req->r_osd = create_osd(osdc, o);
6f6c7006
SW		 998 if (!req->r_osd) {
999 list_move(&req->r_req_lru_item, &osdc->req_notarget);
c99eb1c7 1000 goto out;
6f6c7006 1001 }
f24e9980 1002
6f6c7006 1003 dout("map_request osd %p is osd%d\n", req->r_osd, o);
f24e9980
SW		 1004 __insert_osd(osdc, req->r_osd);
1005
b7a9e5dd
SW		 1006 ceph_con_open(&req->r_osd->o_con,
1007 CEPH_ENTITY_TYPE_OSD, o,
1008 &osdc->osdmap->osd_addr[o]);
f24e9980
SW		 1009 }
1010
f5a2041b
YS		 1011 if (req->r_osd) {
1012 __remove_osd_from_lru(req->r_osd);
f24e9980 1013 list_add(&req->r_osd_item, &req->r_osd->o_requests);
6f6c7006
SW		 1014 list_move(&req->r_req_lru_item, &osdc->req_unsent);
1015 } else {
1016 list_move(&req->r_req_lru_item, &osdc->req_notarget);
f5a2041b 1017 }
d85b7056 1018 err = 1; /* osd or pg changed */
f24e9980
SW		 1019
1020out:
f24e9980
SW		 1021 return err;
1022}
1023
1024/*
1025 * caller should hold map_sem (for read) and request_mutex
1026 */
56e925b6
SW		 1027static void __send_request(struct ceph_osd_client *osdc,
1028 struct ceph_osd_request *req)
f24e9980 1029{
1b83bef2 1030 void *p;
f24e9980 1031
1b83bef2
SW		 1032 dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n",
1033 req, req->r_tid, req->r_osd->o_osd, req->r_flags,
1034 (unsigned long long)req->r_pgid.pool, req->r_pgid.seed);
1035
1036 /* fill in message content that changes each time we send it */
1037 put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch);
1038 put_unaligned_le32(req->r_flags, req->r_request_flags);
1039 put_unaligned_le64(req->r_pgid.pool, req->r_request_pool);
1040 p = req->r_request_pgid;
1041 ceph_encode_64(&p, req->r_pgid.pool);
1042 ceph_encode_32(&p, req->r_pgid.seed);
1043 put_unaligned_le64(1, req->r_request_attempts); /* FIXME */
1044 memcpy(req->r_request_reassert_version, &req->r_reassert_version,
1045 sizeof(req->r_reassert_version));
2169aea6 1046
3dd72fc0 1047 req->r_stamp = jiffies;
07a27e22 1048 list_move_tail(&req->r_req_lru_item, &osdc->req_lru);
f24e9980
SW		 1049
1050 ceph_msg_get(req->r_request); /* send consumes a ref */
1051 ceph_con_send(&req->r_osd->o_con, req->r_request);
1052 req->r_sent = req->r_osd->o_incarnation;
f24e9980
SW		 1053}
1054
6f6c7006
SW		 1055/*
1056 * Send any requests in the queue (req_unsent).
1057 */
f9d25199 1058static void __send_queued(struct ceph_osd_client *osdc)
6f6c7006
SW		 1059{
1060 struct ceph_osd_request *req, *tmp;
1061
f9d25199
AE		 1062 dout("__send_queued\n");
1063 list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item)
6f6c7006 1064 __send_request(osdc, req);
6f6c7006
SW		 1065}
1066
f24e9980
SW		 1067/*
1068 * Timeout callback, called every N seconds when 1 or more osd
1069 * requests has been active for more than N seconds. When this
1070 * happens, we ping all OSDs with requests who have timed out to
1071 * ensure any communications channel reset is detected. Reset the
1072 * request timeouts another N seconds in the future as we go.
1073 * Reschedule the timeout event another N seconds in future (unless
1074 * there are no open requests).
1075 */
1076static void handle_timeout(struct work_struct *work)
1077{
1078 struct ceph_osd_client *osdc =
1079 container_of(work, struct ceph_osd_client, timeout_work.work);
83aff95e 1080 struct ceph_osd_request *req;
f24e9980 1081 struct ceph_osd *osd;
422d2cb8 1082 unsigned long keepalive =
3d14c5d2 1083 osdc->client->options->osd_keepalive_timeout * HZ;
422d2cb8 1084 struct list_head slow_osds;
f24e9980
SW		 1085 dout("timeout\n");
1086 down_read(&osdc->map_sem);
1087
1088 ceph_monc_request_next_osdmap(&osdc->client->monc);
1089
1090 mutex_lock(&osdc->request_mutex);
f24e9980 1091
422d2cb8
YS		 1092 /*
1093 * ping osds that are a bit slow. this ensures that if there
1094 * is a break in the TCP connection we will notice, and reopen
1095 * a connection with that osd (from the fault callback).
1096 */
1097 INIT_LIST_HEAD(&slow_osds);
1098 list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) {
3dd72fc0 1099 if (time_before(jiffies, req->r_stamp + keepalive))
422d2cb8
YS		 1100 break;
1101
1102 osd = req->r_osd;
1103 BUG_ON(!osd);
1104 dout(" tid %llu is slow, will send keepalive on osd%d\n",
f24e9980 1105 req->r_tid, osd->o_osd);
422d2cb8
YS		 1106 list_move_tail(&osd->o_keepalive_item, &slow_osds);
1107 }
1108 while (!list_empty(&slow_osds)) {
1109 osd = list_entry(slow_osds.next, struct ceph_osd,
1110 o_keepalive_item);
1111 list_del_init(&osd->o_keepalive_item);
f24e9980
SW		 1112 ceph_con_keepalive(&osd->o_con);
1113 }
1114
422d2cb8 1115 __schedule_osd_timeout(osdc);
f9d25199 1116 __send_queued(osdc);
f24e9980 1117 mutex_unlock(&osdc->request_mutex);
f24e9980
SW		 1118 up_read(&osdc->map_sem);
1119}
1120
f5a2041b
YS		 1121static void handle_osds_timeout(struct work_struct *work)
1122{
1123 struct ceph_osd_client *osdc =
1124 container_of(work, struct ceph_osd_client,
1125 osds_timeout_work.work);
1126 unsigned long delay =
3d14c5d2 1127 osdc->client->options->osd_idle_ttl * HZ >> 2;
f5a2041b
YS		 1128
1129 dout("osds timeout\n");
1130 down_read(&osdc->map_sem);
aca420bc 1131 remove_old_osds(osdc);
f5a2041b
YS		 1132 up_read(&osdc->map_sem);
1133
1134 schedule_delayed_work(&osdc->osds_timeout_work,
1135 round_jiffies_relative(delay));
1136}
1137
25845472
SW		 1138static void complete_request(struct ceph_osd_request *req)
1139{
1140 if (req->r_safe_callback)
1141 req->r_safe_callback(req, NULL);
1142 complete_all(&req->r_safe_completion); /* fsync waiter */
1143}
1144
1b83bef2
SW		 1145static int __decode_pgid(void **p, void *end, struct ceph_pg *pgid)
1146{
1147 __u8 v;
1148
1149 ceph_decode_need(p, end, 1 + 8 + 4 + 4, bad);
1150 v = ceph_decode_8(p);
1151 if (v > 1) {
1152 pr_warning("do not understand pg encoding %d > 1", v);
1153 return -EINVAL;
1154 }
1155 pgid->pool = ceph_decode_64(p);
1156 pgid->seed = ceph_decode_32(p);
1157 *p += 4;
1158 return 0;
1159
1160bad:
1161 pr_warning("incomplete pg encoding");
1162 return -EINVAL;
1163}
1164
f24e9980
SW		 1165/*
1166 * handle osd op reply. either call the callback if it is specified,
1167 * or do the completion to wake up the waiting thread.
1168 */
350b1c32
SW		 1169static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg,
1170 struct ceph_connection *con)
f24e9980 1171{
1b83bef2 1172 void *p, *end;
f24e9980
SW		 1173 struct ceph_osd_request *req;
1174 u64 tid;
1b83bef2
SW		 1175 int object_len;
1176 int numops, payload_len, flags;
0ceed5db 1177 s32 result;
1b83bef2
SW		 1178 s32 retry_attempt;
1179 struct ceph_pg pg;
1180 int err;
1181 u32 reassert_epoch;
1182 u64 reassert_version;
1183 u32 osdmap_epoch;
0d5af164 1184 int already_completed;
1b83bef2 1185 int i;
f24e9980 1186
6df058c0 1187 tid = le64_to_cpu(msg->hdr.tid);
1b83bef2
SW		 1188 dout("handle_reply %p tid %llu\n", msg, tid);
1189
1190 p = msg->front.iov_base;
1191 end = p + msg->front.iov_len;
1192
1193 ceph_decode_need(&p, end, 4, bad);
1194 object_len = ceph_decode_32(&p);
1195 ceph_decode_need(&p, end, object_len, bad);
1196 p += object_len;
1197
1198 err = __decode_pgid(&p, end, &pg);
1199 if (err)
f24e9980 1200 goto bad;
1b83bef2
SW		 1201
1202 ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad);
1203 flags = ceph_decode_64(&p);
1204 result = ceph_decode_32(&p);
1205 reassert_epoch = ceph_decode_32(&p);
1206 reassert_version = ceph_decode_64(&p);
1207 osdmap_epoch = ceph_decode_32(&p);
1208
f24e9980
SW		 1209 /* lookup */
1210 mutex_lock(&osdc->request_mutex);
1211 req = __lookup_request(osdc, tid);
1212 if (req == NULL) {
1213 dout("handle_reply tid %llu dne\n", tid);
1214 mutex_unlock(&osdc->request_mutex);
1215 return;
1216 }
1217 ceph_osdc_get_request(req);
1b83bef2
SW		 1218
1219 dout("handle_reply %p tid %llu req %p result %d\n", msg, tid,
1220 req, result);
1221
1222 ceph_decode_need(&p, end, 4, bad);
1223 numops = ceph_decode_32(&p);
1224 if (numops > CEPH_OSD_MAX_OP)
1225 goto bad_put;
1226 if (numops != req->r_num_ops)
1227 goto bad_put;
1228 payload_len = 0;
1229 ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad);
1230 for (i = 0; i < numops; i++) {
1231 struct ceph_osd_op *op = p;
1232 int len;
1233
1234 len = le32_to_cpu(op->payload_len);
1235 req->r_reply_op_len[i] = len;
1236 dout(" op %d has %d bytes\n", i, len);
1237 payload_len += len;
1238 p += sizeof(*op);
1239 }
1240 if (payload_len != le32_to_cpu(msg->hdr.data_len)) {
1241 pr_warning("sum of op payload lens %d != data_len %d",
1242 payload_len, le32_to_cpu(msg->hdr.data_len));
1243 goto bad_put;
1244 }
1245
1246 ceph_decode_need(&p, end, 4 + numops * 4, bad);
1247 retry_attempt = ceph_decode_32(&p);
1248 for (i = 0; i < numops; i++)
1249 req->r_reply_op_result[i] = ceph_decode_32(&p);
f24e9980 1250
350b1c32 1251 /*
0d59ab81 1252 * if this connection filled our message, drop our reference now, to
350b1c32
SW		 1253 * avoid a (safe but slower) revoke later.
1254 */
0d59ab81 1255 if (req->r_con_filling_msg == con && req->r_reply == msg) {
c16e7869 1256 dout(" dropping con_filling_msg ref %p\n", con);
0d59ab81 1257 req->r_con_filling_msg = NULL;
0d47766f 1258 con->ops->put(con);
350b1c32
SW		 1259 }
1260
f24e9980 1261 if (!req->r_got_reply) {
95c96174 1262 unsigned int bytes;
f24e9980 1263
1b83bef2 1264 req->r_result = result;
f24e9980
SW		 1265 bytes = le32_to_cpu(msg->hdr.data_len);
1266 dout("handle_reply result %d bytes %d\n", req->r_result,
1267 bytes);
1268 if (req->r_result == 0)
1269 req->r_result = bytes;
1270
1271 /* in case this is a write and we need to replay, */
1b83bef2
SW		 1272 req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch);
1273 req->r_reassert_version.version = cpu_to_le64(reassert_version);
f24e9980
SW		 1274
1275 req->r_got_reply = 1;
1276 } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) {
1277 dout("handle_reply tid %llu dup ack\n", tid);
34b43a56 1278 mutex_unlock(&osdc->request_mutex);
f24e9980
SW		 1279 goto done;
1280 }
1281
1282 dout("handle_reply tid %llu flags %d\n", tid, flags);
1283
a40c4f10
YS		 1284 if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK))
1285 __register_linger_request(osdc, req);
1286
f24e9980 1287 /* either this is a read, or we got the safe response */
0ceed5db
SW		 1288 if (result < 0 ||
1289 (flags & CEPH_OSD_FLAG_ONDISK) ||
f24e9980
SW		 1290 ((flags & CEPH_OSD_FLAG_WRITE) == 0))
1291 __unregister_request(osdc, req);
1292
0d5af164
AE		 1293 already_completed = req->r_completed;
1294 req->r_completed = 1;
f24e9980 1295 mutex_unlock(&osdc->request_mutex);
0d5af164
AE		 1296 if (already_completed)
1297 goto done;
f24e9980
SW		 1298
1299 if (req->r_callback)
1300 req->r_callback(req, msg);
1301 else
03066f23 1302 complete_all(&req->r_completion);
f24e9980 1303
25845472
SW		 1304 if (flags & CEPH_OSD_FLAG_ONDISK)
1305 complete_request(req);
f24e9980
SW		 1306
1307done:
a40c4f10 1308 dout("req=%p req->r_linger=%d\n", req, req->r_linger);
f24e9980
SW		 1309 ceph_osdc_put_request(req);
1310 return;
1311
1b83bef2
SW		 1312bad_put:
1313 ceph_osdc_put_request(req);
f24e9980 1314bad:
1b83bef2
SW		 1315 pr_err("corrupt osd_op_reply got %d %d\n",
1316 (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len));
9ec7cab1 1317 ceph_msg_dump(msg);
f24e9980
SW		 1318}
1319
6f6c7006 1320static void reset_changed_osds(struct ceph_osd_client *osdc)
f24e9980 1321{
f24e9980 1322 struct rb_node *p, *n;
f24e9980 1323
6f6c7006
SW		 1324 for (p = rb_first(&osdc->osds); p; p = n) {
1325 struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node);
f24e9980 1326
6f6c7006
SW		 1327 n = rb_next(p);
1328 if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) ||
1329 memcmp(&osd->o_con.peer_addr,
1330 ceph_osd_addr(osdc->osdmap,
1331 osd->o_osd),
1332 sizeof(struct ceph_entity_addr)) != 0)
1333 __reset_osd(osdc, osd);
f24e9980 1334 }
422d2cb8
YS		 1335}
1336
1337/*
6f6c7006
SW		 1338 * Requeue requests whose mapping to an OSD has changed. If requests map to
1339 * no osd, request a new map.
422d2cb8 1340 *
e6d50f67 1341 * Caller should hold map_sem for read.
422d2cb8 1342 */
38d6453c 1343static void kick_requests(struct ceph_osd_client *osdc, int force_resend)
422d2cb8 1344{
a40c4f10 1345 struct ceph_osd_request *req, *nreq;
6f6c7006
SW		 1346 struct rb_node *p;
1347 int needmap = 0;
1348 int err;
422d2cb8 1349
38d6453c 1350 dout("kick_requests %s\n", force_resend ? " (force resend)" : "");
422d2cb8 1351 mutex_lock(&osdc->request_mutex);
6194ea89 1352 for (p = rb_first(&osdc->requests); p; ) {
6f6c7006 1353 req = rb_entry(p, struct ceph_osd_request, r_node);
6194ea89 1354 p = rb_next(p);
ab60b16d
AE		 1355
1356 /*
1357 * For linger requests that have not yet been
1358 * registered, move them to the linger list; they'll
1359 * be sent to the osd in the loop below. Unregister
1360 * the request before re-registering it as a linger
1361 * request to ensure the __map_request() below
1362 * will decide it needs to be sent.
1363 */
1364 if (req->r_linger && list_empty(&req->r_linger_item)) {
1365 dout("%p tid %llu restart on osd%d\n",
1366 req, req->r_tid,
1367 req->r_osd ? req->r_osd->o_osd : -1);
1368 __unregister_request(osdc, req);
1369 __register_linger_request(osdc, req);
1370 continue;
1371 }
1372
38d6453c 1373 err = __map_request(osdc, req, force_resend);
6f6c7006
SW		 1374 if (err < 0)
1375 continue; /* error */
1376 if (req->r_osd == NULL) {
1377 dout("%p tid %llu maps to no osd\n", req, req->r_tid);
1378 needmap++; /* request a newer map */
1379 } else if (err > 0) {
6194ea89
SW		 1380 if (!req->r_linger) {
1381 dout("%p tid %llu requeued on osd%d\n", req,
1382 req->r_tid,
1383 req->r_osd ? req->r_osd->o_osd : -1);
a40c4f10 1384 req->r_flags |= CEPH_OSD_FLAG_RETRY;
6194ea89
SW		 1385 }
1386 }
a40c4f10
YS		 1387 }
1388
1389 list_for_each_entry_safe(req, nreq, &osdc->req_linger,
1390 r_linger_item) {
1391 dout("linger req=%p req->r_osd=%p\n", req, req->r_osd);
1392
38d6453c 1393 err = __map_request(osdc, req, force_resend);
ab60b16d 1394 dout("__map_request returned %d\n", err);
a40c4f10
YS		 1395 if (err == 0)
1396 continue; /* no change and no osd was specified */
1397 if (err < 0)
1398 continue; /* hrm! */
1399 if (req->r_osd == NULL) {
1400 dout("tid %llu maps to no valid osd\n", req->r_tid);
1401 needmap++; /* request a newer map */
1402 continue;
6f6c7006 1403 }
a40c4f10
YS		 1404
1405 dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid,
1406 req->r_osd ? req->r_osd->o_osd : -1);
a40c4f10 1407 __register_request(osdc, req);
c89ce05e 1408 __unregister_linger_request(osdc, req);
6f6c7006 1409 }
f24e9980
SW		 1410 mutex_unlock(&osdc->request_mutex);
1411
1412 if (needmap) {
1413 dout("%d requests for down osds, need new map\n", needmap);
1414 ceph_monc_request_next_osdmap(&osdc->client->monc);
1415 }
e6d50f67 1416 reset_changed_osds(osdc);
422d2cb8 1417}
6f6c7006
SW		 1418
1419
f24e9980
SW		 1420/*
1421 * Process updated osd map.
1422 *
1423 * The message contains any number of incremental and full maps, normally
1424 * indicating some sort of topology change in the cluster. Kick requests
1425 * off to different OSDs as needed.
1426 */
1427void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
1428{
1429 void *p, *end, *next;
1430 u32 nr_maps, maplen;
1431 u32 epoch;
1432 struct ceph_osdmap *newmap = NULL, *oldmap;
1433 int err;
1434 struct ceph_fsid fsid;
1435
1436 dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0);
1437 p = msg->front.iov_base;
1438 end = p + msg->front.iov_len;
1439
1440 /* verify fsid */
1441 ceph_decode_need(&p, end, sizeof(fsid), bad);
1442 ceph_decode_copy(&p, &fsid, sizeof(fsid));
0743304d
SW		 1443 if (ceph_check_fsid(osdc->client, &fsid) < 0)
1444 return;
f24e9980
SW		 1445
1446 down_write(&osdc->map_sem);
1447
1448 /* incremental maps */
1449 ceph_decode_32_safe(&p, end, nr_maps, bad);
1450 dout(" %d inc maps\n", nr_maps);
1451 while (nr_maps > 0) {
1452 ceph_decode_need(&p, end, 2*sizeof(u32), bad);
c89136ea
SW		 1453 epoch = ceph_decode_32(&p);
1454 maplen = ceph_decode_32(&p);
f24e9980
SW		 1455 ceph_decode_need(&p, end, maplen, bad);
1456 next = p + maplen;
1457 if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) {
1458 dout("applying incremental map %u len %d\n",
1459 epoch, maplen);
1460 newmap = osdmap_apply_incremental(&p, next,
1461 osdc->osdmap,
15d9882c 1462 &osdc->client->msgr);
f24e9980
SW		 1463 if (IS_ERR(newmap)) {
1464 err = PTR_ERR(newmap);
1465 goto bad;
1466 }
30dc6381 1467 BUG_ON(!newmap);
f24e9980
SW		 1468 if (newmap != osdc->osdmap) {
1469 ceph_osdmap_destroy(osdc->osdmap);
1470 osdc->osdmap = newmap;
1471 }
38d6453c 1472 kick_requests(osdc, 0);
f24e9980
SW		 1473 } else {
1474 dout("ignoring incremental map %u len %d\n",
1475 epoch, maplen);
1476 }
1477 p = next;
1478 nr_maps--;
1479 }
1480 if (newmap)
1481 goto done;
1482
1483 /* full maps */
1484 ceph_decode_32_safe(&p, end, nr_maps, bad);
1485 dout(" %d full maps\n", nr_maps);
1486 while (nr_maps) {
1487 ceph_decode_need(&p, end, 2*sizeof(u32), bad);
c89136ea
SW		 1488 epoch = ceph_decode_32(&p);
1489 maplen = ceph_decode_32(&p);
f24e9980
SW		 1490 ceph_decode_need(&p, end, maplen, bad);
1491 if (nr_maps > 1) {
1492 dout("skipping non-latest full map %u len %d\n",
1493 epoch, maplen);
1494 } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) {
1495 dout("skipping full map %u len %d, "
1496 "older than our %u\n", epoch, maplen,
1497 osdc->osdmap->epoch);
1498 } else {
38d6453c
SW		 1499 int skipped_map = 0;
1500
f24e9980
SW		 1501 dout("taking full map %u len %d\n", epoch, maplen);
1502 newmap = osdmap_decode(&p, p+maplen);
1503 if (IS_ERR(newmap)) {
1504 err = PTR_ERR(newmap);
1505 goto bad;
1506 }
30dc6381 1507 BUG_ON(!newmap);
f24e9980
SW		 1508 oldmap = osdc->osdmap;
1509 osdc->osdmap = newmap;
38d6453c
SW		 1510 if (oldmap) {
1511 if (oldmap->epoch + 1 < newmap->epoch)
1512 skipped_map = 1;
f24e9980 1513 ceph_osdmap_destroy(oldmap);
38d6453c
SW		 1514 }
1515 kick_requests(osdc, skipped_map);
f24e9980
SW		 1516 }
1517 p += maplen;
1518 nr_maps--;
1519 }
1520
1521done:
1522 downgrade_write(&osdc->map_sem);
1523 ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch);
cd634fb6
SW		 1524
1525 /*
1526 * subscribe to subsequent osdmap updates if full to ensure
1527 * we find out when we are no longer full and stop returning
1528 * ENOSPC.
1529 */
1530 if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL))
1531 ceph_monc_request_next_osdmap(&osdc->client->monc);
1532
f9d25199
AE		 1533 mutex_lock(&osdc->request_mutex);
1534 __send_queued(osdc);
1535 mutex_unlock(&osdc->request_mutex);
f24e9980 1536 up_read(&osdc->map_sem);
03066f23 1537 wake_up_all(&osdc->client->auth_wq);
f24e9980
SW		 1538 return;
1539
1540bad:
1541 pr_err("osdc handle_map corrupt msg\n");
9ec7cab1 1542 ceph_msg_dump(msg);
f24e9980
SW		 1543 up_write(&osdc->map_sem);
1544 return;
1545}
1546
a40c4f10
YS		 1547/*
1548 * watch/notify callback event infrastructure
1549 *
1550 * These callbacks are used both for watch and notify operations.
1551 */
1552static void __release_event(struct kref *kref)
1553{
1554 struct ceph_osd_event *event =
1555 container_of(kref, struct ceph_osd_event, kref);
1556
1557 dout("__release_event %p\n", event);
1558 kfree(event);
1559}
1560
1561static void get_event(struct ceph_osd_event *event)
1562{
1563 kref_get(&event->kref);
1564}
1565
1566void ceph_osdc_put_event(struct ceph_osd_event *event)
1567{
1568 kref_put(&event->kref, __release_event);
1569}
1570EXPORT_SYMBOL(ceph_osdc_put_event);
1571
1572static void __insert_event(struct ceph_osd_client *osdc,
1573 struct ceph_osd_event *new)
1574{
1575 struct rb_node **p = &osdc->event_tree.rb_node;
1576 struct rb_node *parent = NULL;
1577 struct ceph_osd_event *event = NULL;
1578
1579 while (*p) {
1580 parent = *p;
1581 event = rb_entry(parent, struct ceph_osd_event, node);
1582 if (new->cookie < event->cookie)
1583 p = &(*p)->rb_left;
1584 else if (new->cookie > event->cookie)
1585 p = &(*p)->rb_right;
1586 else
1587 BUG();
1588 }
1589
1590 rb_link_node(&new->node, parent, p);
1591 rb_insert_color(&new->node, &osdc->event_tree);
1592}
1593
1594static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc,
1595 u64 cookie)
1596{
1597 struct rb_node **p = &osdc->event_tree.rb_node;
1598 struct rb_node *parent = NULL;
1599 struct ceph_osd_event *event = NULL;
1600
1601 while (*p) {
1602 parent = *p;
1603 event = rb_entry(parent, struct ceph_osd_event, node);
1604 if (cookie < event->cookie)
1605 p = &(*p)->rb_left;
1606 else if (cookie > event->cookie)
1607 p = &(*p)->rb_right;
1608 else
1609 return event;
1610 }
1611 return NULL;
1612}
1613
1614static void __remove_event(struct ceph_osd_event *event)
1615{
1616 struct ceph_osd_client *osdc = event->osdc;
1617
1618 if (!RB_EMPTY_NODE(&event->node)) {
1619 dout("__remove_event removed %p\n", event);
1620 rb_erase(&event->node, &osdc->event_tree);
1621 ceph_osdc_put_event(event);
1622 } else {
1623 dout("__remove_event didn't remove %p\n", event);
1624 }
1625}
1626
1627int ceph_osdc_create_event(struct ceph_osd_client *osdc,
1628 void (*event_cb)(u64, u64, u8, void *),
3c663bbd 1629 void *data, struct ceph_osd_event **pevent)
a40c4f10
YS		 1630{
1631 struct ceph_osd_event *event;
1632
1633 event = kmalloc(sizeof(*event), GFP_NOIO);
1634 if (!event)
1635 return -ENOMEM;
1636
1637 dout("create_event %p\n", event);
1638 event->cb = event_cb;
3c663bbd 1639 event->one_shot = 0;
a40c4f10
YS		 1640 event->data = data;
1641 event->osdc = osdc;
1642 INIT_LIST_HEAD(&event->osd_node);
3ee5234d 1643 RB_CLEAR_NODE(&event->node);
a40c4f10
YS		 1644 kref_init(&event->kref); /* one ref for us */
1645 kref_get(&event->kref); /* one ref for the caller */
a40c4f10
YS		 1646
1647 spin_lock(&osdc->event_lock);
1648 event->cookie = ++osdc->event_count;
1649 __insert_event(osdc, event);
1650 spin_unlock(&osdc->event_lock);
1651
1652 *pevent = event;
1653 return 0;
1654}
1655EXPORT_SYMBOL(ceph_osdc_create_event);
1656
1657void ceph_osdc_cancel_event(struct ceph_osd_event *event)
1658{
1659 struct ceph_osd_client *osdc = event->osdc;
1660
1661 dout("cancel_event %p\n", event);
1662 spin_lock(&osdc->event_lock);
1663 __remove_event(event);
1664 spin_unlock(&osdc->event_lock);
1665 ceph_osdc_put_event(event); /* caller's */
1666}
1667EXPORT_SYMBOL(ceph_osdc_cancel_event);
1668
1669
1670static void do_event_work(struct work_struct *work)
1671{
1672 struct ceph_osd_event_work *event_work =
1673 container_of(work, struct ceph_osd_event_work, work);
1674 struct ceph_osd_event *event = event_work->event;
1675 u64 ver = event_work->ver;
1676 u64 notify_id = event_work->notify_id;
1677 u8 opcode = event_work->opcode;
1678
1679 dout("do_event_work completing %p\n", event);
1680 event->cb(ver, notify_id, opcode, event->data);
a40c4f10
YS		 1681 dout("do_event_work completed %p\n", event);
1682 ceph_osdc_put_event(event);
1683 kfree(event_work);
1684}
1685
1686
1687/*
1688 * Process osd watch notifications
1689 */
3c663bbd
AE		 1690static void handle_watch_notify(struct ceph_osd_client *osdc,
1691 struct ceph_msg *msg)
a40c4f10
YS		 1692{
1693 void *p, *end;
1694 u8 proto_ver;
1695 u64 cookie, ver, notify_id;
1696 u8 opcode;
1697 struct ceph_osd_event *event;
1698 struct ceph_osd_event_work *event_work;
1699
1700 p = msg->front.iov_base;
1701 end = p + msg->front.iov_len;
1702
1703 ceph_decode_8_safe(&p, end, proto_ver, bad);
1704 ceph_decode_8_safe(&p, end, opcode, bad);
1705 ceph_decode_64_safe(&p, end, cookie, bad);
1706 ceph_decode_64_safe(&p, end, ver, bad);
1707 ceph_decode_64_safe(&p, end, notify_id, bad);
1708
1709 spin_lock(&osdc->event_lock);
1710 event = __find_event(osdc, cookie);
1711 if (event) {
3c663bbd 1712 BUG_ON(event->one_shot);
a40c4f10 1713 get_event(event);
a40c4f10
YS		 1714 }
1715 spin_unlock(&osdc->event_lock);
1716 dout("handle_watch_notify cookie %lld ver %lld event %p\n",
1717 cookie, ver, event);
1718 if (event) {
1719 event_work = kmalloc(sizeof(*event_work), GFP_NOIO);
a40c4f10
YS		 1720 if (!event_work) {
1721 dout("ERROR: could not allocate event_work\n");
1722 goto done_err;
1723 }
6b0ae409 1724 INIT_WORK(&event_work->work, do_event_work);
a40c4f10
YS		 1725 event_work->event = event;
1726 event_work->ver = ver;
1727 event_work->notify_id = notify_id;
1728 event_work->opcode = opcode;
1729 if (!queue_work(osdc->notify_wq, &event_work->work)) {
1730 dout("WARNING: failed to queue notify event work\n");
1731 goto done_err;
1732 }
1733 }
1734
1735 return;
1736
1737done_err:
a40c4f10
YS		 1738 ceph_osdc_put_event(event);
1739 return;
1740
1741bad:
1742 pr_err("osdc handle_watch_notify corrupt msg\n");
1743 return;
1744}
1745
70636773
AE		 1746static void ceph_osdc_msg_data_set(struct ceph_msg *msg,
1747 struct ceph_osd_data *osd_data)
f24e9980 1748{
0fff87ec 1749 if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) {
f1baeb2b 1750 BUG_ON(osd_data->length > (u64) SIZE_MAX);
ebf18f47 1751 if (osd_data->length)
70636773
AE		 1752 ceph_msg_data_set_pages(msg, osd_data->pages,
1753 osd_data->length, osd_data->alignment);
9a5e6d09
AE		 1754 } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) {
1755 BUG_ON(!osd_data->pagelist->length);
1756 ceph_msg_data_set_pagelist(msg, osd_data->pagelist);
68b4476b 1757#ifdef CONFIG_BLOCK
0fff87ec 1758 } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) {
70636773 1759 ceph_msg_data_set_bio(msg, osd_data->bio);
68b4476b 1760#endif
2ac2b7a6 1761 } else {
0fff87ec 1762 BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE);
2ac2b7a6 1763 }
70636773
AE		 1764}
1765
1766/*
1767 * Register request, send initial attempt.
1768 */
1769int ceph_osdc_start_request(struct ceph_osd_client *osdc,
1770 struct ceph_osd_request *req,
1771 bool nofail)
1772{
1773 int rc = 0;
1774
1775 /* Set up response incoming data and request outgoing data fields */
1776
1777 ceph_osdc_msg_data_set(req->r_reply, &req->r_data_in);
1778 ceph_osdc_msg_data_set(req->r_request, &req->r_data_out);
f24e9980 1779
f24e9980
SW		 1780 down_read(&osdc->map_sem);
1781 mutex_lock(&osdc->request_mutex);
dc4b870c 1782 __register_request(osdc, req);
92451b49
AE		 1783 WARN_ON(req->r_sent);
1784 rc = __map_request(osdc, req, 0);
1785 if (rc < 0) {
1786 if (nofail) {
1787 dout("osdc_start_request failed map, "
1788 " will retry %lld\n", req->r_tid);
1789 rc = 0;
f24e9980 1790 }
92451b49 1791 goto out_unlock;
f24e9980 1792 }
92451b49
AE		 1793 if (req->r_osd == NULL) {
1794 dout("send_request %p no up osds in pg\n", req);
1795 ceph_monc_request_next_osdmap(&osdc->client->monc);
1796 } else {
1797 __send_request(osdc, req);
1798 }
1799 rc = 0;
234af26f 1800out_unlock:
f24e9980
SW		 1801 mutex_unlock(&osdc->request_mutex);
1802 up_read(&osdc->map_sem);
1803 return rc;
1804}
3d14c5d2 1805EXPORT_SYMBOL(ceph_osdc_start_request);
f24e9980
SW		 1806
1807/*
1808 * wait for a request to complete
1809 */
1810int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
1811 struct ceph_osd_request *req)
1812{
1813 int rc;
1814
1815 rc = wait_for_completion_interruptible(&req->r_completion);
1816 if (rc < 0) {
1817 mutex_lock(&osdc->request_mutex);
1818 __cancel_request(req);
529cfcc4 1819 __unregister_request(osdc, req);
f24e9980 1820 mutex_unlock(&osdc->request_mutex);
25845472 1821 complete_request(req);
529cfcc4 1822 dout("wait_request tid %llu canceled/timed out\n", req->r_tid);
f24e9980
SW		 1823 return rc;
1824 }
1825
1826 dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result);
1827 return req->r_result;
1828}
3d14c5d2 1829EXPORT_SYMBOL(ceph_osdc_wait_request);
f24e9980
SW		 1830
1831/*
1832 * sync - wait for all in-flight requests to flush. avoid starvation.
1833 */
1834void ceph_osdc_sync(struct ceph_osd_client *osdc)
1835{
1836 struct ceph_osd_request *req;
1837 u64 last_tid, next_tid = 0;
1838
1839 mutex_lock(&osdc->request_mutex);
1840 last_tid = osdc->last_tid;
1841 while (1) {
1842 req = __lookup_request_ge(osdc, next_tid);
1843 if (!req)
1844 break;
1845 if (req->r_tid > last_tid)
1846 break;
1847
1848 next_tid = req->r_tid + 1;
1849 if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0)
1850 continue;
1851
1852 ceph_osdc_get_request(req);
1853 mutex_unlock(&osdc->request_mutex);
1854 dout("sync waiting on tid %llu (last is %llu)\n",
1855 req->r_tid, last_tid);
1856 wait_for_completion(&req->r_safe_completion);
1857 mutex_lock(&osdc->request_mutex);
1858 ceph_osdc_put_request(req);
1859 }
1860 mutex_unlock(&osdc->request_mutex);
1861 dout("sync done (thru tid %llu)\n", last_tid);
1862}
3d14c5d2 1863EXPORT_SYMBOL(ceph_osdc_sync);
f24e9980
SW		 1864
1865/*
1866 * init, shutdown
1867 */
1868int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client)
1869{
1870 int err;
1871
1872 dout("init\n");
1873 osdc->client = client;
1874 osdc->osdmap = NULL;
1875 init_rwsem(&osdc->map_sem);
1876 init_completion(&osdc->map_waiters);
1877 osdc->last_requested_map = 0;
1878 mutex_init(&osdc->request_mutex);
f24e9980
SW		 1879 osdc->last_tid = 0;
1880 osdc->osds = RB_ROOT;
f5a2041b 1881 INIT_LIST_HEAD(&osdc->osd_lru);
f24e9980 1882 osdc->requests = RB_ROOT;
422d2cb8 1883 INIT_LIST_HEAD(&osdc->req_lru);
6f6c7006
SW		 1884 INIT_LIST_HEAD(&osdc->req_unsent);
1885 INIT_LIST_HEAD(&osdc->req_notarget);
a40c4f10 1886 INIT_LIST_HEAD(&osdc->req_linger);
f24e9980
SW		 1887 osdc->num_requests = 0;
1888 INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout);
f5a2041b 1889 INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout);
a40c4f10
YS		 1890 spin_lock_init(&osdc->event_lock);
1891 osdc->event_tree = RB_ROOT;
1892 osdc->event_count = 0;
f5a2041b
YS		 1893
1894 schedule_delayed_work(&osdc->osds_timeout_work,
3d14c5d2 1895 round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ));
f24e9980 1896
5f44f142 1897 err = -ENOMEM;
f24e9980
SW		 1898 osdc->req_mempool = mempool_create_kmalloc_pool(10,
1899 sizeof(struct ceph_osd_request));
1900 if (!osdc->req_mempool)
5f44f142 1901 goto out;
f24e9980 1902
d50b409f
SW		 1903 err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP,
1904 OSD_OP_FRONT_LEN, 10, true,
4f48280e 1905 "osd_op");
f24e9980 1906 if (err < 0)
5f44f142 1907 goto out_mempool;
d50b409f 1908 err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY,
4f48280e
SW		 1909 OSD_OPREPLY_FRONT_LEN, 10, true,
1910 "osd_op_reply");
c16e7869
SW		 1911 if (err < 0)
1912 goto out_msgpool;
a40c4f10
YS		 1913
1914 osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify");
1915 if (IS_ERR(osdc->notify_wq)) {
1916 err = PTR_ERR(osdc->notify_wq);
1917 osdc->notify_wq = NULL;
1918 goto out_msgpool;
1919 }
f24e9980 1920 return 0;
5f44f142 1921
c16e7869
SW		 1922out_msgpool:
1923 ceph_msgpool_destroy(&osdc->msgpool_op);
5f44f142
SW		 1924out_mempool:
1925 mempool_destroy(osdc->req_mempool);
1926out:
1927 return err;
f24e9980
SW		 1928}
1929
1930void ceph_osdc_stop(struct ceph_osd_client *osdc)
1931{
a40c4f10
YS		 1932 flush_workqueue(osdc->notify_wq);
1933 destroy_workqueue(osdc->notify_wq);
f24e9980 1934 cancel_delayed_work_sync(&osdc->timeout_work);
f5a2041b 1935 cancel_delayed_work_sync(&osdc->osds_timeout_work);
f24e9980
SW		 1936 if (osdc->osdmap) {
1937 ceph_osdmap_destroy(osdc->osdmap);
1938 osdc->osdmap = NULL;
1939 }
aca420bc 1940 remove_all_osds(osdc);
f24e9980
SW		 1941 mempool_destroy(osdc->req_mempool);
1942 ceph_msgpool_destroy(&osdc->msgpool_op);
c16e7869 1943 ceph_msgpool_destroy(&osdc->msgpool_op_reply);
f24e9980
SW		 1944}
1945
1946/*
1947 * Read some contiguous pages. If we cross a stripe boundary, shorten
1948 * *plen. Return number of bytes read, or error.
1949 */
1950int ceph_osdc_readpages(struct ceph_osd_client *osdc,
1951 struct ceph_vino vino, struct ceph_file_layout *layout,
1952 u64 off, u64 *plen,
1953 u32 truncate_seq, u64 truncate_size,
b7495fc2 1954 struct page **pages, int num_pages, int page_align)
f24e9980
SW		 1955{
1956 struct ceph_osd_request *req;
0fff87ec 1957 struct ceph_osd_data *osd_data;
f24e9980
SW		 1958 int rc = 0;
1959
1960 dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino,
1961 vino.snap, off, *plen);
1962 req = ceph_osdc_new_request(osdc, layout, vino, off, plen,
1963 CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ,
1964 NULL, 0, truncate_seq, truncate_size, NULL,
153e5167 1965 false);
6816282d
SW		 1966 if (IS_ERR(req))
1967 return PTR_ERR(req);
f24e9980
SW		 1968
1969 /* it may be a short read due to an object boundary */
0fff87ec
AE		 1970
1971 osd_data = &req->r_data_in;
1972 osd_data->type = CEPH_OSD_DATA_TYPE_PAGES;
1973 osd_data->pages = pages;
e0c59487 1974 osd_data->length = *plen;
0fff87ec 1975 osd_data->alignment = page_align;
f24e9980 1976
e0c59487
AE		 1977 dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n",
1978 off, *plen, osd_data->length, page_align);
f24e9980
SW		 1979
1980 rc = ceph_osdc_start_request(osdc, req, false);
1981 if (!rc)
1982 rc = ceph_osdc_wait_request(osdc, req);
1983
1984 ceph_osdc_put_request(req);
1985 dout("readpages result %d\n", rc);
1986 return rc;
1987}
3d14c5d2 1988EXPORT_SYMBOL(ceph_osdc_readpages);
f24e9980
SW		 1989
1990/*
1991 * do a synchronous write on N pages
1992 */
1993int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino,
1994 struct ceph_file_layout *layout,
1995 struct ceph_snap_context *snapc,
1996 u64 off, u64 len,
1997 u32 truncate_seq, u64 truncate_size,
1998 struct timespec *mtime,
24808826 1999 struct page **pages, int num_pages)
f24e9980
SW		 2000{
2001 struct ceph_osd_request *req;
0fff87ec 2002 struct ceph_osd_data *osd_data;
f24e9980 2003 int rc = 0;
b7495fc2 2004 int page_align = off & ~PAGE_MASK;
f24e9980
SW		 2005
2006 BUG_ON(vino.snap != CEPH_NOSNAP);
2007 req = ceph_osdc_new_request(osdc, layout, vino, off, &len,
2008 CEPH_OSD_OP_WRITE,
24808826 2009 CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE,
fbf8685f 2010 snapc, 0,
f24e9980 2011 truncate_seq, truncate_size, mtime,
153e5167 2012 true);
6816282d
SW		 2013 if (IS_ERR(req))
2014 return PTR_ERR(req);
f24e9980
SW		 2015
2016 /* it may be a short write due to an object boundary */
0fff87ec
AE		 2017 osd_data = &req->r_data_out;
2018 osd_data->type = CEPH_OSD_DATA_TYPE_PAGES;
2019 osd_data->pages = pages;
e0c59487 2020 osd_data->length = len;
0fff87ec 2021 osd_data->alignment = page_align;
e0c59487 2022 dout("writepages %llu~%llu (%llu bytes)\n", off, len, osd_data->length);
f24e9980 2023
87f979d3 2024 rc = ceph_osdc_start_request(osdc, req, true);
f24e9980
SW		 2025 if (!rc)
2026 rc = ceph_osdc_wait_request(osdc, req);
2027
2028 ceph_osdc_put_request(req);
2029 if (rc == 0)
2030 rc = len;
2031 dout("writepages result %d\n", rc);
2032 return rc;
2033}
3d14c5d2 2034EXPORT_SYMBOL(ceph_osdc_writepages);
f24e9980
SW		 2035
2036/*
2037 * handle incoming message
2038 */
2039static void dispatch(struct ceph_connection *con, struct ceph_msg *msg)
2040{
2041 struct ceph_osd *osd = con->private;
32c895e7 2042 struct ceph_osd_client *osdc;
f24e9980
SW		 2043 int type = le16_to_cpu(msg->hdr.type);
2044
2045 if (!osd)
4a32f93d 2046 goto out;
32c895e7 2047 osdc = osd->o_osdc;
f24e9980
SW		 2048
2049 switch (type) {
2050 case CEPH_MSG_OSD_MAP:
2051 ceph_osdc_handle_map(osdc, msg);
2052 break;
2053 case CEPH_MSG_OSD_OPREPLY:
350b1c32 2054 handle_reply(osdc, msg, con);
f24e9980 2055 break;
a40c4f10
YS		 2056 case CEPH_MSG_WATCH_NOTIFY:
2057 handle_watch_notify(osdc, msg);
2058 break;
f24e9980
SW		 2059
2060 default:
2061 pr_err("received unknown message type %d %s\n", type,
2062 ceph_msg_type_name(type));
2063 }
4a32f93d 2064out:
f24e9980
SW		 2065 ceph_msg_put(msg);
2066}
2067
5b3a4db3 2068/*
21b667f6
SW		 2069 * lookup and return message for incoming reply. set up reply message
2070 * pages.
5b3a4db3
SW		 2071 */
2072static struct ceph_msg *get_reply(struct ceph_connection *con,
2450418c
YS		 2073 struct ceph_msg_header *hdr,
2074 int *skip)
f24e9980
SW		 2075{
2076 struct ceph_osd *osd = con->private;
2077 struct ceph_osd_client *osdc = osd->o_osdc;
2450418c 2078 struct ceph_msg *m;
0547a9b3 2079 struct ceph_osd_request *req;
5b3a4db3
SW		 2080 int front = le32_to_cpu(hdr->front_len);
2081 int data_len = le32_to_cpu(hdr->data_len);
0547a9b3 2082 u64 tid;
f24e9980 2083
0547a9b3
YS		 2084 tid = le64_to_cpu(hdr->tid);
2085 mutex_lock(&osdc->request_mutex);
2086 req = __lookup_request(osdc, tid);
2087 if (!req) {
2088 *skip = 1;
2089 m = NULL;
756a16a5
SW		 2090 dout("get_reply unknown tid %llu from osd%d\n", tid,
2091 osd->o_osd);
0547a9b3
YS		 2092 goto out;
2093 }
c16e7869
SW		 2094
2095 if (req->r_con_filling_msg) {
8921d114 2096 dout("%s revoking msg %p from old con %p\n", __func__,
c16e7869 2097 req->r_reply, req->r_con_filling_msg);
8921d114 2098 ceph_msg_revoke_incoming(req->r_reply);
0d47766f 2099 req->r_con_filling_msg->ops->put(req->r_con_filling_msg);
6f46cb29 2100 req->r_con_filling_msg = NULL;
0547a9b3
YS		 2101 }
2102
c16e7869
SW		 2103 if (front > req->r_reply->front.iov_len) {
2104 pr_warning("get_reply front %d > preallocated %d\n",
2105 front, (int)req->r_reply->front.iov_len);
b61c2763 2106 m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false);
a79832f2 2107 if (!m)
c16e7869
SW		 2108 goto out;
2109 ceph_msg_put(req->r_reply);
2110 req->r_reply = m;
2111 }
2112 m = ceph_msg_get(req->r_reply);
2113
0547a9b3 2114 if (data_len > 0) {
0fff87ec
AE		 2115 struct ceph_osd_data *osd_data = &req->r_data_in;
2116
2117 if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) {
0fff87ec 2118 if (osd_data->pages &&
e0c59487 2119 unlikely(osd_data->length < data_len)) {
2ac2b7a6 2120
e0c59487
AE		 2121 pr_warning("tid %lld reply has %d bytes "
2122 "we had only %llu bytes ready\n",
2123 tid, data_len, osd_data->length);
2ac2b7a6
AE		 2124 *skip = 1;
2125 ceph_msg_put(m);
2126 m = NULL;
2127 goto out;
2128 }
2ac2b7a6 2129 }
0547a9b3 2130 }
5b3a4db3 2131 *skip = 0;
0d47766f 2132 req->r_con_filling_msg = con->ops->get(con);
c16e7869 2133 dout("get_reply tid %lld %p\n", tid, m);
0547a9b3
YS		 2134
2135out:
2136 mutex_unlock(&osdc->request_mutex);
2450418c 2137 return m;
5b3a4db3
SW		 2138
2139}
2140
2141static struct ceph_msg *alloc_msg(struct ceph_connection *con,
2142 struct ceph_msg_header *hdr,
2143 int *skip)
2144{
2145 struct ceph_osd *osd = con->private;
2146 int type = le16_to_cpu(hdr->type);
2147 int front = le32_to_cpu(hdr->front_len);
2148
1c20f2d2 2149 *skip = 0;
5b3a4db3
SW		 2150 switch (type) {
2151 case CEPH_MSG_OSD_MAP:
a40c4f10 2152 case CEPH_MSG_WATCH_NOTIFY:
b61c2763 2153 return ceph_msg_new(type, front, GFP_NOFS, false);
5b3a4db3
SW		 2154 case CEPH_MSG_OSD_OPREPLY:
2155 return get_reply(con, hdr, skip);
2156 default:
2157 pr_info("alloc_msg unexpected msg type %d from osd%d\n", type,
2158 osd->o_osd);
2159 *skip = 1;
2160 return NULL;
2161 }
f24e9980
SW		 2162}
2163
2164/*
2165 * Wrappers to refcount containing ceph_osd struct
2166 */
2167static struct ceph_connection *get_osd_con(struct ceph_connection *con)
2168{
2169 struct ceph_osd *osd = con->private;
2170 if (get_osd(osd))
2171 return con;
2172 return NULL;
2173}
2174
2175static void put_osd_con(struct ceph_connection *con)
2176{
2177 struct ceph_osd *osd = con->private;
2178 put_osd(osd);
2179}
2180
4e7a5dcd
SW		 2181/*
2182 * authentication
2183 */
a3530df3
AE		 2184/*
2185 * Note: returned pointer is the address of a structure that's
2186 * managed separately. Caller must *not* attempt to free it.
2187 */
2188static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con,
8f43fb53 2189 int *proto, int force_new)
4e7a5dcd
SW		 2190{
2191 struct ceph_osd *o = con->private;
2192 struct ceph_osd_client *osdc = o->o_osdc;
2193 struct ceph_auth_client *ac = osdc->client->monc.auth;
74f1869f 2194 struct ceph_auth_handshake *auth = &o->o_auth;
4e7a5dcd 2195
74f1869f 2196 if (force_new && auth->authorizer) {
27859f97 2197 ceph_auth_destroy_authorizer(ac, auth->authorizer);
74f1869f
AE		 2198 auth->authorizer = NULL;
2199 }
27859f97
SW		 2200 if (!auth->authorizer) {
2201 int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD,
2202 auth);
4e7a5dcd 2203 if (ret)
a3530df3 2204 return ERR_PTR(ret);
27859f97
SW		 2205 } else {
2206 int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD,
0bed9b5c
SW		 2207 auth);
2208 if (ret)
2209 return ERR_PTR(ret);
4e7a5dcd 2210 }
4e7a5dcd 2211 *proto = ac->protocol;
74f1869f 2212
a3530df3 2213 return auth;
4e7a5dcd
SW		 2214}
2215
2216
2217static int verify_authorizer_reply(struct ceph_connection *con, int len)
2218{
2219 struct ceph_osd *o = con->private;
2220 struct ceph_osd_client *osdc = o->o_osdc;
2221 struct ceph_auth_client *ac = osdc->client->monc.auth;
2222
27859f97 2223 return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len);
4e7a5dcd
SW		 2224}
2225
9bd2e6f8
SW		 2226static int invalidate_authorizer(struct ceph_connection *con)
2227{
2228 struct ceph_osd *o = con->private;
2229 struct ceph_osd_client *osdc = o->o_osdc;
2230 struct ceph_auth_client *ac = osdc->client->monc.auth;
2231
27859f97 2232 ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD);
9bd2e6f8
SW		 2233 return ceph_monc_validate_auth(&osdc->client->monc);
2234}
4e7a5dcd 2235
9e32789f 2236static const struct ceph_connection_operations osd_con_ops = {
f24e9980
SW		 2237 .get = get_osd_con,
2238 .put = put_osd_con,
2239 .dispatch = dispatch,
4e7a5dcd
SW		 2240 .get_authorizer = get_authorizer,
2241 .verify_authorizer_reply = verify_authorizer_reply,
9bd2e6f8 2242 .invalidate_authorizer = invalidate_authorizer,
f24e9980 2243 .alloc_msg = alloc_msg,
81b024e7 2244 .fault = osd_reset,
f24e9980 2245};
Linux 6.x block layer and io_uring tree(s)