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libceph: let osd ops determine request data length
[deliverable/linux.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 140 ceph_put_snap_context(req->r_snapc);
c885837f 141 ceph_pagelist_release(&req->r_trail);
415e49a9
SW		 142 if (req->r_mempool)
143 mempool_free(req, req->r_osdc->req_mempool);
144 else
145 kfree(req);
f24e9980 146}
3d14c5d2 147EXPORT_SYMBOL(ceph_osdc_release_request);
68b4476b 148
3499e8a5 149struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
f24e9980 150 struct ceph_snap_context *snapc,
1b83bef2 151 unsigned int num_ops,
3499e8a5 152 bool use_mempool,
54a54007 153 gfp_t gfp_flags)
f24e9980
SW		 154{
155 struct ceph_osd_request *req;
156 struct ceph_msg *msg;
1b83bef2
SW		 157 size_t msg_size;
158
159 msg_size = 4 + 4 + 8 + 8 + 4+8;
160 msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */
161 msg_size += 1 + 8 + 4 + 4; /* pg_t */
162 msg_size += 4 + MAX_OBJ_NAME_SIZE;
163 msg_size += 2 + num_ops*sizeof(struct ceph_osd_op);
164 msg_size += 8; /* snapid */
165 msg_size += 8; /* snap_seq */
166 msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */
167 msg_size += 4;
f24e9980
SW		 168
169 if (use_mempool) {
3499e8a5 170 req = mempool_alloc(osdc->req_mempool, gfp_flags);
f24e9980
SW		 171 memset(req, 0, sizeof(*req));
172 } else {
3499e8a5 173 req = kzalloc(sizeof(*req), gfp_flags);
f24e9980
SW		 174 }
175 if (req == NULL)
a79832f2 176 return NULL;
f24e9980 177
f24e9980
SW		 178 req->r_osdc = osdc;
179 req->r_mempool = use_mempool;
68b4476b 180
415e49a9 181 kref_init(&req->r_kref);
f24e9980
SW		 182 init_completion(&req->r_completion);
183 init_completion(&req->r_safe_completion);
a978fa20 184 RB_CLEAR_NODE(&req->r_node);
f24e9980 185 INIT_LIST_HEAD(&req->r_unsafe_item);
a40c4f10
YS		 186 INIT_LIST_HEAD(&req->r_linger_item);
187 INIT_LIST_HEAD(&req->r_linger_osd);
935b639a 188 INIT_LIST_HEAD(&req->r_req_lru_item);
cd43045c
SW		 189 INIT_LIST_HEAD(&req->r_osd_item);
190
c16e7869
SW		 191 /* create reply message */
192 if (use_mempool)
193 msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0);
194 else
195 msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY,
b61c2763 196 OSD_OPREPLY_FRONT_LEN, gfp_flags, true);
a79832f2 197 if (!msg) {
c16e7869 198 ceph_osdc_put_request(req);
a79832f2 199 return NULL;
c16e7869
SW		 200 }
201 req->r_reply = msg;
202
0fff87ec
AE		 203 req->r_data_in.type = CEPH_OSD_DATA_TYPE_NONE;
204 req->r_data_out.type = CEPH_OSD_DATA_TYPE_NONE;
c885837f 205 ceph_pagelist_init(&req->r_trail);
d50b409f 206
c16e7869 207 /* create request message; allow space for oid */
f24e9980 208 if (use_mempool)
8f3bc053 209 msg = ceph_msgpool_get(&osdc->msgpool_op, 0);
f24e9980 210 else
b61c2763 211 msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true);
a79832f2 212 if (!msg) {
f24e9980 213 ceph_osdc_put_request(req);
a79832f2 214 return NULL;
f24e9980 215 }
68b4476b 216
f24e9980 217 memset(msg->front.iov_base, 0, msg->front.iov_len);
3499e8a5
YS		 218
219 req->r_request = msg;
3499e8a5
YS		 220
221 return req;
222}
3d14c5d2 223EXPORT_SYMBOL(ceph_osdc_alloc_request);
3499e8a5 224
175face2 225static u64 osd_req_encode_op(struct ceph_osd_request *req,
68b4476b
YS		 226 struct ceph_osd_op *dst,
227 struct ceph_osd_req_op *src)
228{
175face2
AE		 229 u64 out_data_len = 0;
230 u64 tmp;
231
68b4476b
YS		 232 dst->op = cpu_to_le16(src->op);
233
065a68f9 234 switch (src->op) {
fbfab539
AE		 235 case CEPH_OSD_OP_STAT:
236 break;
68b4476b
YS		 237 case CEPH_OSD_OP_READ:
238 case CEPH_OSD_OP_WRITE:
175face2
AE		 239 if (src->op == CEPH_OSD_OP_WRITE)
240 out_data_len = src->extent.length;
241 dst->extent.offset = cpu_to_le64(src->extent.offset);
242 dst->extent.length = cpu_to_le64(src->extent.length);
68b4476b
YS		 243 dst->extent.truncate_size =
244 cpu_to_le64(src->extent.truncate_size);
245 dst->extent.truncate_seq =
246 cpu_to_le32(src->extent.truncate_seq);
247 break;
ae1533b6 248 case CEPH_OSD_OP_CALL:
ae1533b6
YS		 249 dst->cls.class_len = src->cls.class_len;
250 dst->cls.method_len = src->cls.method_len;
251 dst->cls.indata_len = cpu_to_le32(src->cls.indata_len);
252
175face2 253 tmp = req->r_trail.length;
c885837f 254 ceph_pagelist_append(&req->r_trail, src->cls.class_name,
ae1533b6 255 src->cls.class_len);
c885837f 256 ceph_pagelist_append(&req->r_trail, src->cls.method_name,
ae1533b6 257 src->cls.method_len);
c885837f 258 ceph_pagelist_append(&req->r_trail, src->cls.indata,
ae1533b6 259 src->cls.indata_len);
175face2 260 out_data_len = req->r_trail.length - tmp;
ae1533b6 261 break;
68b4476b
YS		 262 case CEPH_OSD_OP_STARTSYNC:
263 break;
a40c4f10
YS		 264 case CEPH_OSD_OP_NOTIFY_ACK:
265 case CEPH_OSD_OP_WATCH:
266 dst->watch.cookie = cpu_to_le64(src->watch.cookie);
267 dst->watch.ver = cpu_to_le64(src->watch.ver);
268 dst->watch.flag = src->watch.flag;
269 break;
68b4476b 270 default:
8f63ca2d 271 pr_err("unrecognized osd opcode %d\n", src->op);
68b4476b
YS		 272 WARN_ON(1);
273 break;
4c46459c
AE		 274 case CEPH_OSD_OP_MAPEXT:
275 case CEPH_OSD_OP_MASKTRUNC:
276 case CEPH_OSD_OP_SPARSE_READ:
a9f36c3e 277 case CEPH_OSD_OP_NOTIFY:
4c46459c
AE		 278 case CEPH_OSD_OP_ASSERT_VER:
279 case CEPH_OSD_OP_WRITEFULL:
280 case CEPH_OSD_OP_TRUNCATE:
281 case CEPH_OSD_OP_ZERO:
282 case CEPH_OSD_OP_DELETE:
283 case CEPH_OSD_OP_APPEND:
284 case CEPH_OSD_OP_SETTRUNC:
285 case CEPH_OSD_OP_TRIMTRUNC:
286 case CEPH_OSD_OP_TMAPUP:
287 case CEPH_OSD_OP_TMAPPUT:
288 case CEPH_OSD_OP_TMAPGET:
289 case CEPH_OSD_OP_CREATE:
a9f36c3e 290 case CEPH_OSD_OP_ROLLBACK:
4c46459c
AE		 291 case CEPH_OSD_OP_OMAPGETKEYS:
292 case CEPH_OSD_OP_OMAPGETVALS:
293 case CEPH_OSD_OP_OMAPGETHEADER:
294 case CEPH_OSD_OP_OMAPGETVALSBYKEYS:
295 case CEPH_OSD_OP_MODE_RD:
296 case CEPH_OSD_OP_OMAPSETVALS:
297 case CEPH_OSD_OP_OMAPSETHEADER:
298 case CEPH_OSD_OP_OMAPCLEAR:
299 case CEPH_OSD_OP_OMAPRMKEYS:
300 case CEPH_OSD_OP_OMAP_CMP:
301 case CEPH_OSD_OP_CLONERANGE:
302 case CEPH_OSD_OP_ASSERT_SRC_VERSION:
303 case CEPH_OSD_OP_SRC_CMPXATTR:
a9f36c3e 304 case CEPH_OSD_OP_GETXATTR:
4c46459c 305 case CEPH_OSD_OP_GETXATTRS:
a9f36c3e
AE		 306 case CEPH_OSD_OP_CMPXATTR:
307 case CEPH_OSD_OP_SETXATTR:
4c46459c
AE		 308 case CEPH_OSD_OP_SETXATTRS:
309 case CEPH_OSD_OP_RESETXATTRS:
310 case CEPH_OSD_OP_RMXATTR:
311 case CEPH_OSD_OP_PULL:
312 case CEPH_OSD_OP_PUSH:
313 case CEPH_OSD_OP_BALANCEREADS:
314 case CEPH_OSD_OP_UNBALANCEREADS:
315 case CEPH_OSD_OP_SCRUB:
316 case CEPH_OSD_OP_SCRUB_RESERVE:
317 case CEPH_OSD_OP_SCRUB_UNRESERVE:
318 case CEPH_OSD_OP_SCRUB_STOP:
319 case CEPH_OSD_OP_SCRUB_MAP:
320 case CEPH_OSD_OP_WRLOCK:
321 case CEPH_OSD_OP_WRUNLOCK:
322 case CEPH_OSD_OP_RDLOCK:
323 case CEPH_OSD_OP_RDUNLOCK:
324 case CEPH_OSD_OP_UPLOCK:
325 case CEPH_OSD_OP_DNLOCK:
326 case CEPH_OSD_OP_PGLS:
327 case CEPH_OSD_OP_PGLS_FILTER:
328 pr_err("unsupported osd opcode %s\n",
8f63ca2d 329 ceph_osd_op_name(src->op));
4c46459c
AE		 330 WARN_ON(1);
331 break;
68b4476b
YS		 332 }
333 dst->payload_len = cpu_to_le32(src->payload_len);
175face2
AE		 334
335 return out_data_len;
68b4476b
YS		 336}
337
3499e8a5
YS		 338/*
339 * build new request AND message
340 *
341 */
342void ceph_osdc_build_request(struct ceph_osd_request *req,
175face2 343 u64 off, unsigned int num_ops,
68b4476b 344 struct ceph_osd_req_op *src_ops,
4d6b250b 345 struct ceph_snap_context *snapc, u64 snap_id,
af77f26c 346 struct timespec *mtime)
3499e8a5
YS		 347{
348 struct ceph_msg *msg = req->r_request;
68b4476b 349 struct ceph_osd_req_op *src_op;
3499e8a5 350 void *p;
1b83bef2 351 size_t msg_size;
3499e8a5 352 int flags = req->r_flags;
f44246e3 353 u64 data_len;
68b4476b 354 int i;
3499e8a5 355
1b83bef2
SW		 356 req->r_num_ops = num_ops;
357 req->r_snapid = snap_id;
f24e9980
SW		 358 req->r_snapc = ceph_get_snap_context(snapc);
359
1b83bef2
SW		 360 /* encode request */
361 msg->hdr.version = cpu_to_le16(4);
362
363 p = msg->front.iov_base;
364 ceph_encode_32(&p, 1); /* client_inc is always 1 */
365 req->r_request_osdmap_epoch = p;
366 p += 4;
367 req->r_request_flags = p;
368 p += 4;
369 if (req->r_flags & CEPH_OSD_FLAG_WRITE)
370 ceph_encode_timespec(p, mtime);
371 p += sizeof(struct ceph_timespec);
372 req->r_request_reassert_version = p;
373 p += sizeof(struct ceph_eversion); /* will get filled in */
374
375 /* oloc */
376 ceph_encode_8(&p, 4);
377 ceph_encode_8(&p, 4);
378 ceph_encode_32(&p, 8 + 4 + 4);
379 req->r_request_pool = p;
380 p += 8;
381 ceph_encode_32(&p, -1); /* preferred */
382 ceph_encode_32(&p, 0); /* key len */
383
384 ceph_encode_8(&p, 1);
385 req->r_request_pgid = p;
386 p += 8 + 4;
387 ceph_encode_32(&p, -1); /* preferred */
388
389 /* oid */
390 ceph_encode_32(&p, req->r_oid_len);
af77f26c 391 memcpy(p, req->r_oid, req->r_oid_len);
1b83bef2 392 dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len);
af77f26c 393 p += req->r_oid_len;
f24e9980 394
175face2 395 /* ops--can imply data */
1b83bef2 396 ceph_encode_16(&p, num_ops);
68b4476b 397 src_op = src_ops;
1b83bef2 398 req->r_request_ops = p;
175face2 399 data_len = 0;
1b83bef2 400 for (i = 0; i < num_ops; i++, src_op++) {
175face2 401 data_len += osd_req_encode_op(req, p, src_op);
1b83bef2
SW		 402 p += sizeof(struct ceph_osd_op);
403 }
68b4476b 404
1b83bef2
SW		 405 /* snaps */
406 ceph_encode_64(&p, req->r_snapid);
407 ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0);
408 ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0);
409 if (req->r_snapc) {
f24e9980 410 for (i = 0; i < snapc->num_snaps; i++) {
1b83bef2 411 ceph_encode_64(&p, req->r_snapc->snaps[i]);
f24e9980
SW		 412 }
413 }
414
1b83bef2
SW		 415 req->r_request_attempts = p;
416 p += 4;
417
175face2
AE		 418 /* data */
419 if (flags & CEPH_OSD_FLAG_WRITE)
68b4476b 420 req->r_request->hdr.data_off = cpu_to_le16(off);
f44246e3 421 req->r_request->hdr.data_len = cpu_to_le32(data_len);
c5c6b19d 422
f24e9980 423 BUG_ON(p > msg->front.iov_base + msg->front.iov_len);
6f863e71
SW		 424 msg_size = p - msg->front.iov_base;
425 msg->front.iov_len = msg_size;
426 msg->hdr.front_len = cpu_to_le32(msg_size);
1b83bef2
SW		 427
428 dout("build_request msg_size was %d num_ops %d\n", (int)msg_size,
429 num_ops);
3499e8a5
YS		 430 return;
431}
3d14c5d2 432EXPORT_SYMBOL(ceph_osdc_build_request);
3499e8a5
YS		 433
434/*
435 * build new request AND message, calculate layout, and adjust file
436 * extent as needed.
437 *
438 * if the file was recently truncated, we include information about its
439 * old and new size so that the object can be updated appropriately. (we
440 * avoid synchronously deleting truncated objects because it's slow.)
441 *
442 * if @do_sync, include a 'startsync' command so that the osd will flush
443 * data quickly.
444 */
445struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
446 struct ceph_file_layout *layout,
447 struct ceph_vino vino,
448 u64 off, u64 *plen,
449 int opcode, int flags,
450 struct ceph_snap_context *snapc,
451 int do_sync,
452 u32 truncate_seq,
453 u64 truncate_size,
454 struct timespec *mtime,
153e5167 455 bool use_mempool)
3499e8a5 456{
ae7ca4a3 457 struct ceph_osd_req_op ops[2];
68b4476b 458 struct ceph_osd_request *req;
ae7ca4a3 459 unsigned int num_op = 1;
47a05811 460 u64 bno = 0;
6816282d 461 int r;
68b4476b 462
ae7ca4a3
AE		 463 memset(&ops, 0, sizeof ops);
464
68b4476b
YS		 465 ops[0].op = opcode;
466 ops[0].extent.truncate_seq = truncate_seq;
467 ops[0].extent.truncate_size = truncate_size;
68b4476b
YS		 468
469 if (do_sync) {
470 ops[1].op = CEPH_OSD_OP_STARTSYNC;
ae7ca4a3
AE		 471 num_op++;
472 }
68b4476b 473
ae7ca4a3
AE		 474 req = ceph_osdc_alloc_request(osdc, snapc, num_op, use_mempool,
475 GFP_NOFS);
4ad12621 476 if (!req)
6816282d 477 return ERR_PTR(-ENOMEM);
d178a9e7 478 req->r_flags = flags;
3499e8a5
YS		 479
480 /* calculate max write size */
60cf5992 481 r = calc_layout(layout, off, plen, ops, &bno);
3ff5f385
AE		 482 if (r < 0) {
483 ceph_osdc_put_request(req);
6816282d 484 return ERR_PTR(r);
3ff5f385 485 }
3499e8a5
YS		 486 req->r_file_layout = *layout; /* keep a copy */
487
dbe0fc41
AE		 488 snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno);
489 req->r_oid_len = strlen(req->r_oid);
490
175face2 491 ceph_osdc_build_request(req, off, num_op, ops,
ae7ca4a3 492 snapc, vino.snap, mtime);
3499e8a5 493
f24e9980
SW		 494 return req;
495}
3d14c5d2 496EXPORT_SYMBOL(ceph_osdc_new_request);
f24e9980
SW		 497
498/*
499 * We keep osd requests in an rbtree, sorted by ->r_tid.
500 */
501static void __insert_request(struct ceph_osd_client *osdc,
502 struct ceph_osd_request *new)
503{
504 struct rb_node **p = &osdc->requests.rb_node;
505 struct rb_node *parent = NULL;
506 struct ceph_osd_request *req = NULL;
507
508 while (*p) {
509 parent = *p;
510 req = rb_entry(parent, struct ceph_osd_request, r_node);
511 if (new->r_tid < req->r_tid)
512 p = &(*p)->rb_left;
513 else if (new->r_tid > req->r_tid)
514 p = &(*p)->rb_right;
515 else
516 BUG();
517 }
518
519 rb_link_node(&new->r_node, parent, p);
520 rb_insert_color(&new->r_node, &osdc->requests);
521}
522
523static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc,
524 u64 tid)
525{
526 struct ceph_osd_request *req;
527 struct rb_node *n = osdc->requests.rb_node;
528
529 while (n) {
530 req = rb_entry(n, struct ceph_osd_request, r_node);
531 if (tid < req->r_tid)
532 n = n->rb_left;
533 else if (tid > req->r_tid)
534 n = n->rb_right;
535 else
536 return req;
537 }
538 return NULL;
539}
540
541static struct ceph_osd_request *
542__lookup_request_ge(struct ceph_osd_client *osdc,
543 u64 tid)
544{
545 struct ceph_osd_request *req;
546 struct rb_node *n = osdc->requests.rb_node;
547
548 while (n) {
549 req = rb_entry(n, struct ceph_osd_request, r_node);
550 if (tid < req->r_tid) {
551 if (!n->rb_left)
552 return req;
553 n = n->rb_left;
554 } else if (tid > req->r_tid) {
555 n = n->rb_right;
556 } else {
557 return req;
558 }
559 }
560 return NULL;
561}
562
6f6c7006
SW		 563/*
564 * Resubmit requests pending on the given osd.
565 */
566static void __kick_osd_requests(struct ceph_osd_client *osdc,
567 struct ceph_osd *osd)
568{
a40c4f10 569 struct ceph_osd_request *req, *nreq;
6f6c7006
SW		 570 int err;
571
572 dout("__kick_osd_requests osd%d\n", osd->o_osd);
573 err = __reset_osd(osdc, osd);
685a7555 574 if (err)
6f6c7006
SW		 575 return;
576
577 list_for_each_entry(req, &osd->o_requests, r_osd_item) {
578 list_move(&req->r_req_lru_item, &osdc->req_unsent);
579 dout("requeued %p tid %llu osd%d\n", req, req->r_tid,
580 osd->o_osd);
a40c4f10
YS		 581 if (!req->r_linger)
582 req->r_flags |= CEPH_OSD_FLAG_RETRY;
583 }
584
585 list_for_each_entry_safe(req, nreq, &osd->o_linger_requests,
586 r_linger_osd) {
77f38e0e
SW		 587 /*
588 * reregister request prior to unregistering linger so
589 * that r_osd is preserved.
590 */
591 BUG_ON(!list_empty(&req->r_req_lru_item));
a40c4f10 592 __register_request(osdc, req);
77f38e0e
SW		 593 list_add(&req->r_req_lru_item, &osdc->req_unsent);
594 list_add(&req->r_osd_item, &req->r_osd->o_requests);
595 __unregister_linger_request(osdc, req);
a40c4f10
YS		 596 dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid,
597 osd->o_osd);
6f6c7006
SW		 598 }
599}
600
f24e9980 601/*
81b024e7 602 * If the osd connection drops, we need to resubmit all requests.
f24e9980
SW		 603 */
604static void osd_reset(struct ceph_connection *con)
605{
606 struct ceph_osd *osd = con->private;
607 struct ceph_osd_client *osdc;
608
609 if (!osd)
610 return;
611 dout("osd_reset osd%d\n", osd->o_osd);
612 osdc = osd->o_osdc;
f24e9980 613 down_read(&osdc->map_sem);
83aff95e
SW		 614 mutex_lock(&osdc->request_mutex);
615 __kick_osd_requests(osdc, osd);
f9d25199 616 __send_queued(osdc);
83aff95e 617 mutex_unlock(&osdc->request_mutex);
f24e9980
SW		 618 up_read(&osdc->map_sem);
619}
620
621/*
622 * Track open sessions with osds.
623 */
e10006f8 624static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum)
f24e9980
SW		 625{
626 struct ceph_osd *osd;
627
628 osd = kzalloc(sizeof(*osd), GFP_NOFS);
629 if (!osd)
630 return NULL;
631
632 atomic_set(&osd->o_ref, 1);
633 osd->o_osdc = osdc;
e10006f8 634 osd->o_osd = onum;
f407731d 635 RB_CLEAR_NODE(&osd->o_node);
f24e9980 636 INIT_LIST_HEAD(&osd->o_requests);
a40c4f10 637 INIT_LIST_HEAD(&osd->o_linger_requests);
f5a2041b 638 INIT_LIST_HEAD(&osd->o_osd_lru);
f24e9980
SW		 639 osd->o_incarnation = 1;
640
b7a9e5dd 641 ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr);
4e7a5dcd 642
422d2cb8 643 INIT_LIST_HEAD(&osd->o_keepalive_item);
f24e9980
SW		 644 return osd;
645}
646
647static struct ceph_osd *get_osd(struct ceph_osd *osd)
648{
649 if (atomic_inc_not_zero(&osd->o_ref)) {
650 dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1,
651 atomic_read(&osd->o_ref));
652 return osd;
653 } else {
654 dout("get_osd %p FAIL\n", osd);
655 return NULL;
656 }
657}
658
659static void put_osd(struct ceph_osd *osd)
660{
661 dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref),
662 atomic_read(&osd->o_ref) - 1);
a255651d 663 if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) {
79494d1b
SW		 664 struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth;
665
a255651d 666 if (ac->ops && ac->ops->destroy_authorizer)
6c4a1915 667 ac->ops->destroy_authorizer(ac, osd->o_auth.authorizer);
f24e9980 668 kfree(osd);
79494d1b 669 }
f24e9980
SW		 670}
671
672/*
673 * remove an osd from our map
674 */
f5a2041b 675static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd)
f24e9980 676{
f5a2041b 677 dout("__remove_osd %p\n", osd);
f24e9980
SW		 678 BUG_ON(!list_empty(&osd->o_requests));
679 rb_erase(&osd->o_node, &osdc->osds);
f5a2041b 680 list_del_init(&osd->o_osd_lru);
f24e9980
SW		 681 ceph_con_close(&osd->o_con);
682 put_osd(osd);
683}
684
aca420bc
SW		 685static void remove_all_osds(struct ceph_osd_client *osdc)
686{
048a9d2d 687 dout("%s %p\n", __func__, osdc);
aca420bc
SW		 688 mutex_lock(&osdc->request_mutex);
689 while (!RB_EMPTY_ROOT(&osdc->osds)) {
690 struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds),
691 struct ceph_osd, o_node);
692 __remove_osd(osdc, osd);
693 }
694 mutex_unlock(&osdc->request_mutex);
695}
696
f5a2041b
YS		 697static void __move_osd_to_lru(struct ceph_osd_client *osdc,
698 struct ceph_osd *osd)
699{
700 dout("__move_osd_to_lru %p\n", osd);
701 BUG_ON(!list_empty(&osd->o_osd_lru));
702 list_add_tail(&osd->o_osd_lru, &osdc->osd_lru);
3d14c5d2 703 osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ;
f5a2041b
YS		 704}
705
706static void __remove_osd_from_lru(struct ceph_osd *osd)
707{
708 dout("__remove_osd_from_lru %p\n", osd);
709 if (!list_empty(&osd->o_osd_lru))
710 list_del_init(&osd->o_osd_lru);
711}
712
aca420bc 713static void remove_old_osds(struct ceph_osd_client *osdc)
f5a2041b
YS		 714{
715 struct ceph_osd *osd, *nosd;
716
717 dout("__remove_old_osds %p\n", osdc);
718 mutex_lock(&osdc->request_mutex);
719 list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) {
aca420bc 720 if (time_before(jiffies, osd->lru_ttl))
f5a2041b
YS		 721 break;
722 __remove_osd(osdc, osd);
723 }
724 mutex_unlock(&osdc->request_mutex);
725}
726
f24e9980
SW		 727/*
728 * reset osd connect
729 */
f5a2041b 730static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd)
f24e9980 731{
c3acb181 732 struct ceph_entity_addr *peer_addr;
f24e9980 733
f5a2041b 734 dout("__reset_osd %p osd%d\n", osd, osd->o_osd);
a40c4f10
YS		 735 if (list_empty(&osd->o_requests) &&
736 list_empty(&osd->o_linger_requests)) {
f5a2041b 737 __remove_osd(osdc, osd);
c3acb181
AE		 738
739 return -ENODEV;
740 }
741
742 peer_addr = &osdc->osdmap->osd_addr[osd->o_osd];
743 if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) &&
744 !ceph_con_opened(&osd->o_con)) {
745 struct ceph_osd_request *req;
746
87b315a5
SW		 747 dout(" osd addr hasn't changed and connection never opened,"
748 " letting msgr retry");
749 /* touch each r_stamp for handle_timeout()'s benfit */
750 list_for_each_entry(req, &osd->o_requests, r_osd_item)
751 req->r_stamp = jiffies;
c3acb181
AE		 752
753 return -EAGAIN;
f24e9980 754 }
c3acb181
AE		 755
756 ceph_con_close(&osd->o_con);
757 ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr);
758 osd->o_incarnation++;
759
760 return 0;
f24e9980
SW		 761}
762
763static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new)
764{
765 struct rb_node **p = &osdc->osds.rb_node;
766 struct rb_node *parent = NULL;
767 struct ceph_osd *osd = NULL;
768
aca420bc 769 dout("__insert_osd %p osd%d\n", new, new->o_osd);
f24e9980
SW		 770 while (*p) {
771 parent = *p;
772 osd = rb_entry(parent, struct ceph_osd, o_node);
773 if (new->o_osd < osd->o_osd)
774 p = &(*p)->rb_left;
775 else if (new->o_osd > osd->o_osd)
776 p = &(*p)->rb_right;
777 else
778 BUG();
779 }
780
781 rb_link_node(&new->o_node, parent, p);
782 rb_insert_color(&new->o_node, &osdc->osds);
783}
784
785static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o)
786{
787 struct ceph_osd *osd;
788 struct rb_node *n = osdc->osds.rb_node;
789
790 while (n) {
791 osd = rb_entry(n, struct ceph_osd, o_node);
792 if (o < osd->o_osd)
793 n = n->rb_left;
794 else if (o > osd->o_osd)
795 n = n->rb_right;
796 else
797 return osd;
798 }
799 return NULL;
800}
801
422d2cb8
YS		 802static void __schedule_osd_timeout(struct ceph_osd_client *osdc)
803{
804 schedule_delayed_work(&osdc->timeout_work,
3d14c5d2 805 osdc->client->options->osd_keepalive_timeout * HZ);
422d2cb8
YS		 806}
807
808static void __cancel_osd_timeout(struct ceph_osd_client *osdc)
809{
810 cancel_delayed_work(&osdc->timeout_work);
811}
f24e9980
SW		 812
813/*
814 * Register request, assign tid. If this is the first request, set up
815 * the timeout event.
816 */
a40c4f10
YS		 817static void __register_request(struct ceph_osd_client *osdc,
818 struct ceph_osd_request *req)
f24e9980 819{
f24e9980 820 req->r_tid = ++osdc->last_tid;
6df058c0 821 req->r_request->hdr.tid = cpu_to_le64(req->r_tid);
77f38e0e 822 dout("__register_request %p tid %lld\n", req, req->r_tid);
f24e9980
SW		 823 __insert_request(osdc, req);
824 ceph_osdc_get_request(req);
825 osdc->num_requests++;
f24e9980 826 if (osdc->num_requests == 1) {
422d2cb8
YS		 827 dout(" first request, scheduling timeout\n");
828 __schedule_osd_timeout(osdc);
f24e9980 829 }
a40c4f10
YS		 830}
831
832static void register_request(struct ceph_osd_client *osdc,
833 struct ceph_osd_request *req)
834{
835 mutex_lock(&osdc->request_mutex);
836 __register_request(osdc, req);
f24e9980
SW		 837 mutex_unlock(&osdc->request_mutex);
838}
839
840/*
841 * called under osdc->request_mutex
842 */
843static void __unregister_request(struct ceph_osd_client *osdc,
844 struct ceph_osd_request *req)
845{
35f9f8a0
SW		 846 if (RB_EMPTY_NODE(&req->r_node)) {
847 dout("__unregister_request %p tid %lld not registered\n",
848 req, req->r_tid);
849 return;
850 }
851
f24e9980
SW		 852 dout("__unregister_request %p tid %lld\n", req, req->r_tid);
853 rb_erase(&req->r_node, &osdc->requests);
854 osdc->num_requests--;
855
0ba6478d
SW		 856 if (req->r_osd) {
857 /* make sure the original request isn't in flight. */
6740a845 858 ceph_msg_revoke(req->r_request);
0ba6478d
SW		 859
860 list_del_init(&req->r_osd_item);
a40c4f10
YS		 861 if (list_empty(&req->r_osd->o_requests) &&
862 list_empty(&req->r_osd->o_linger_requests)) {
863 dout("moving osd to %p lru\n", req->r_osd);
f5a2041b 864 __move_osd_to_lru(osdc, req->r_osd);
a40c4f10 865 }
fbdb9190 866 if (list_empty(&req->r_linger_item))
a40c4f10 867 req->r_osd = NULL;
0ba6478d 868 }
f24e9980 869
7d5f2481 870 list_del_init(&req->r_req_lru_item);
f24e9980
SW		 871 ceph_osdc_put_request(req);
872
422d2cb8
YS		 873 if (osdc->num_requests == 0) {
874 dout(" no requests, canceling timeout\n");
875 __cancel_osd_timeout(osdc);
f24e9980
SW		 876 }
877}
878
879/*
880 * Cancel a previously queued request message
881 */
882static void __cancel_request(struct ceph_osd_request *req)
883{
6bc18876 884 if (req->r_sent && req->r_osd) {
6740a845 885 ceph_msg_revoke(req->r_request);
f24e9980
SW		 886 req->r_sent = 0;
887 }
888}
889
a40c4f10
YS		 890static void __register_linger_request(struct ceph_osd_client *osdc,
891 struct ceph_osd_request *req)
892{
893 dout("__register_linger_request %p\n", req);
894 list_add_tail(&req->r_linger_item, &osdc->req_linger);
6194ea89
SW		 895 if (req->r_osd)
896 list_add_tail(&req->r_linger_osd,
897 &req->r_osd->o_linger_requests);
a40c4f10
YS		 898}
899
900static void __unregister_linger_request(struct ceph_osd_client *osdc,
901 struct ceph_osd_request *req)
902{
903 dout("__unregister_linger_request %p\n", req);
61c74035 904 list_del_init(&req->r_linger_item);
a40c4f10 905 if (req->r_osd) {
a40c4f10
YS		 906 list_del_init(&req->r_linger_osd);
907
908 if (list_empty(&req->r_osd->o_requests) &&
909 list_empty(&req->r_osd->o_linger_requests)) {
910 dout("moving osd to %p lru\n", req->r_osd);
911 __move_osd_to_lru(osdc, req->r_osd);
912 }
fbdb9190
SW		 913 if (list_empty(&req->r_osd_item))
914 req->r_osd = NULL;
a40c4f10
YS		 915 }
916}
917
918void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc,
919 struct ceph_osd_request *req)
920{
921 mutex_lock(&osdc->request_mutex);
922 if (req->r_linger) {
923 __unregister_linger_request(osdc, req);
924 ceph_osdc_put_request(req);
925 }
926 mutex_unlock(&osdc->request_mutex);
927}
928EXPORT_SYMBOL(ceph_osdc_unregister_linger_request);
929
930void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
931 struct ceph_osd_request *req)
932{
933 if (!req->r_linger) {
934 dout("set_request_linger %p\n", req);
935 req->r_linger = 1;
936 /*
937 * caller is now responsible for calling
938 * unregister_linger_request
939 */
940 ceph_osdc_get_request(req);
941 }
942}
943EXPORT_SYMBOL(ceph_osdc_set_request_linger);
944
f24e9980
SW		 945/*
946 * Pick an osd (the first 'up' osd in the pg), allocate the osd struct
947 * (as needed), and set the request r_osd appropriately. If there is
25985edc 948 * no up osd, set r_osd to NULL. Move the request to the appropriate list
6f6c7006 949 * (unsent, homeless) or leave on in-flight lru.
f24e9980
SW		 950 *
951 * Return 0 if unchanged, 1 if changed, or negative on error.
952 *
953 * Caller should hold map_sem for read and request_mutex.
954 */
6f6c7006 955static int __map_request(struct ceph_osd_client *osdc,
38d6453c 956 struct ceph_osd_request *req, int force_resend)
f24e9980 957{
5b191d99 958 struct ceph_pg pgid;
d85b7056
SW		 959 int acting[CEPH_PG_MAX_SIZE];
960 int o = -1, num = 0;
f24e9980 961 int err;
f24e9980 962
6f6c7006 963 dout("map_request %p tid %lld\n", req, req->r_tid);
41766f87
AE		 964 err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap,
965 ceph_file_layout_pg_pool(req->r_file_layout));
6f6c7006
SW		 966 if (err) {
967 list_move(&req->r_req_lru_item, &osdc->req_notarget);
f24e9980 968 return err;
6f6c7006 969 }
7740a42f
SW		 970 req->r_pgid = pgid;
971
d85b7056
SW		 972 err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting);
973 if (err > 0) {
974 o = acting[0];
975 num = err;
976 }
f24e9980 977
38d6453c
SW		 978 if ((!force_resend &&
979 req->r_osd && req->r_osd->o_osd == o &&
d85b7056
SW		 980 req->r_sent >= req->r_osd->o_incarnation &&
981 req->r_num_pg_osds == num &&
982 memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) ||
f24e9980
SW		 983 (req->r_osd == NULL && o == -1))
984 return 0; /* no change */
985
5b191d99
SW		 986 dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n",
987 req->r_tid, pgid.pool, pgid.seed, o,
f24e9980
SW		 988 req->r_osd ? req->r_osd->o_osd : -1);
989
d85b7056
SW		 990 /* record full pg acting set */
991 memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num);
992 req->r_num_pg_osds = num;
993
f24e9980
SW		 994 if (req->r_osd) {
995 __cancel_request(req);
996 list_del_init(&req->r_osd_item);
f24e9980
SW		 997 req->r_osd = NULL;
998 }
999
1000 req->r_osd = __lookup_osd(osdc, o);
1001 if (!req->r_osd && o >= 0) {
c99eb1c7 1002 err = -ENOMEM;
e10006f8 1003 req->r_osd = create_osd(osdc, o);
6f6c7006
SW		 1004 if (!req->r_osd) {
1005 list_move(&req->r_req_lru_item, &osdc->req_notarget);
c99eb1c7 1006 goto out;
6f6c7006 1007 }
f24e9980 1008
6f6c7006 1009 dout("map_request osd %p is osd%d\n", req->r_osd, o);
f24e9980
SW		 1010 __insert_osd(osdc, req->r_osd);
1011
b7a9e5dd
SW		 1012 ceph_con_open(&req->r_osd->o_con,
1013 CEPH_ENTITY_TYPE_OSD, o,
1014 &osdc->osdmap->osd_addr[o]);
f24e9980
SW		 1015 }
1016
f5a2041b
YS		 1017 if (req->r_osd) {
1018 __remove_osd_from_lru(req->r_osd);
f24e9980 1019 list_add(&req->r_osd_item, &req->r_osd->o_requests);
6f6c7006
SW		 1020 list_move(&req->r_req_lru_item, &osdc->req_unsent);
1021 } else {
1022 list_move(&req->r_req_lru_item, &osdc->req_notarget);
f5a2041b 1023 }
d85b7056 1024 err = 1; /* osd or pg changed */
f24e9980
SW		 1025
1026out:
f24e9980
SW		 1027 return err;
1028}
1029
1030/*
1031 * caller should hold map_sem (for read) and request_mutex
1032 */
56e925b6
SW		 1033static void __send_request(struct ceph_osd_client *osdc,
1034 struct ceph_osd_request *req)
f24e9980 1035{
1b83bef2 1036 void *p;
f24e9980 1037
1b83bef2
SW		 1038 dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n",
1039 req, req->r_tid, req->r_osd->o_osd, req->r_flags,
1040 (unsigned long long)req->r_pgid.pool, req->r_pgid.seed);
1041
1042 /* fill in message content that changes each time we send it */
1043 put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch);
1044 put_unaligned_le32(req->r_flags, req->r_request_flags);
1045 put_unaligned_le64(req->r_pgid.pool, req->r_request_pool);
1046 p = req->r_request_pgid;
1047 ceph_encode_64(&p, req->r_pgid.pool);
1048 ceph_encode_32(&p, req->r_pgid.seed);
1049 put_unaligned_le64(1, req->r_request_attempts); /* FIXME */
1050 memcpy(req->r_request_reassert_version, &req->r_reassert_version,
1051 sizeof(req->r_reassert_version));
2169aea6 1052
3dd72fc0 1053 req->r_stamp = jiffies;
07a27e22 1054 list_move_tail(&req->r_req_lru_item, &osdc->req_lru);
f24e9980
SW		 1055
1056 ceph_msg_get(req->r_request); /* send consumes a ref */
1057 ceph_con_send(&req->r_osd->o_con, req->r_request);
1058 req->r_sent = req->r_osd->o_incarnation;
f24e9980
SW		 1059}
1060
6f6c7006
SW		 1061/*
1062 * Send any requests in the queue (req_unsent).
1063 */
f9d25199 1064static void __send_queued(struct ceph_osd_client *osdc)
6f6c7006
SW		 1065{
1066 struct ceph_osd_request *req, *tmp;
1067
f9d25199
AE		 1068 dout("__send_queued\n");
1069 list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item)
6f6c7006 1070 __send_request(osdc, req);
6f6c7006
SW		 1071}
1072
f24e9980
SW		 1073/*
1074 * Timeout callback, called every N seconds when 1 or more osd
1075 * requests has been active for more than N seconds. When this
1076 * happens, we ping all OSDs with requests who have timed out to
1077 * ensure any communications channel reset is detected. Reset the
1078 * request timeouts another N seconds in the future as we go.
1079 * Reschedule the timeout event another N seconds in future (unless
1080 * there are no open requests).
1081 */
1082static void handle_timeout(struct work_struct *work)
1083{
1084 struct ceph_osd_client *osdc =
1085 container_of(work, struct ceph_osd_client, timeout_work.work);
83aff95e 1086 struct ceph_osd_request *req;
f24e9980 1087 struct ceph_osd *osd;
422d2cb8 1088 unsigned long keepalive =
3d14c5d2 1089 osdc->client->options->osd_keepalive_timeout * HZ;
422d2cb8 1090 struct list_head slow_osds;
f24e9980
SW		 1091 dout("timeout\n");
1092 down_read(&osdc->map_sem);
1093
1094 ceph_monc_request_next_osdmap(&osdc->client->monc);
1095
1096 mutex_lock(&osdc->request_mutex);
f24e9980 1097
422d2cb8
YS		 1098 /*
1099 * ping osds that are a bit slow. this ensures that if there
1100 * is a break in the TCP connection we will notice, and reopen
1101 * a connection with that osd (from the fault callback).
1102 */
1103 INIT_LIST_HEAD(&slow_osds);
1104 list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) {
3dd72fc0 1105 if (time_before(jiffies, req->r_stamp + keepalive))
422d2cb8
YS		 1106 break;
1107
1108 osd = req->r_osd;
1109 BUG_ON(!osd);
1110 dout(" tid %llu is slow, will send keepalive on osd%d\n",
f24e9980 1111 req->r_tid, osd->o_osd);
422d2cb8
YS		 1112 list_move_tail(&osd->o_keepalive_item, &slow_osds);
1113 }
1114 while (!list_empty(&slow_osds)) {
1115 osd = list_entry(slow_osds.next, struct ceph_osd,
1116 o_keepalive_item);
1117 list_del_init(&osd->o_keepalive_item);
f24e9980
SW		 1118 ceph_con_keepalive(&osd->o_con);
1119 }
1120
422d2cb8 1121 __schedule_osd_timeout(osdc);
f9d25199 1122 __send_queued(osdc);
f24e9980 1123 mutex_unlock(&osdc->request_mutex);
f24e9980
SW		 1124 up_read(&osdc->map_sem);
1125}
1126
f5a2041b
YS		 1127static void handle_osds_timeout(struct work_struct *work)
1128{
1129 struct ceph_osd_client *osdc =
1130 container_of(work, struct ceph_osd_client,
1131 osds_timeout_work.work);
1132 unsigned long delay =
3d14c5d2 1133 osdc->client->options->osd_idle_ttl * HZ >> 2;
f5a2041b
YS		 1134
1135 dout("osds timeout\n");
1136 down_read(&osdc->map_sem);
aca420bc 1137 remove_old_osds(osdc);
f5a2041b
YS		 1138 up_read(&osdc->map_sem);
1139
1140 schedule_delayed_work(&osdc->osds_timeout_work,
1141 round_jiffies_relative(delay));
1142}
1143
25845472
SW		 1144static void complete_request(struct ceph_osd_request *req)
1145{
1146 if (req->r_safe_callback)
1147 req->r_safe_callback(req, NULL);
1148 complete_all(&req->r_safe_completion); /* fsync waiter */
1149}
1150
1b83bef2
SW		 1151static int __decode_pgid(void **p, void *end, struct ceph_pg *pgid)
1152{
1153 __u8 v;
1154
1155 ceph_decode_need(p, end, 1 + 8 + 4 + 4, bad);
1156 v = ceph_decode_8(p);
1157 if (v > 1) {
1158 pr_warning("do not understand pg encoding %d > 1", v);
1159 return -EINVAL;
1160 }
1161 pgid->pool = ceph_decode_64(p);
1162 pgid->seed = ceph_decode_32(p);
1163 *p += 4;
1164 return 0;
1165
1166bad:
1167 pr_warning("incomplete pg encoding");
1168 return -EINVAL;
1169}
1170
f24e9980
SW		 1171/*
1172 * handle osd op reply. either call the callback if it is specified,
1173 * or do the completion to wake up the waiting thread.
1174 */
350b1c32
SW		 1175static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg,
1176 struct ceph_connection *con)
f24e9980 1177{
1b83bef2 1178 void *p, *end;
f24e9980
SW		 1179 struct ceph_osd_request *req;
1180 u64 tid;
1b83bef2
SW		 1181 int object_len;
1182 int numops, payload_len, flags;
0ceed5db 1183 s32 result;
1b83bef2
SW		 1184 s32 retry_attempt;
1185 struct ceph_pg pg;
1186 int err;
1187 u32 reassert_epoch;
1188 u64 reassert_version;
1189 u32 osdmap_epoch;
0d5af164 1190 int already_completed;
1b83bef2 1191 int i;
f24e9980 1192
6df058c0 1193 tid = le64_to_cpu(msg->hdr.tid);
1b83bef2
SW		 1194 dout("handle_reply %p tid %llu\n", msg, tid);
1195
1196 p = msg->front.iov_base;
1197 end = p + msg->front.iov_len;
1198
1199 ceph_decode_need(&p, end, 4, bad);
1200 object_len = ceph_decode_32(&p);
1201 ceph_decode_need(&p, end, object_len, bad);
1202 p += object_len;
1203
1204 err = __decode_pgid(&p, end, &pg);
1205 if (err)
f24e9980 1206 goto bad;
1b83bef2
SW		 1207
1208 ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad);
1209 flags = ceph_decode_64(&p);
1210 result = ceph_decode_32(&p);
1211 reassert_epoch = ceph_decode_32(&p);
1212 reassert_version = ceph_decode_64(&p);
1213 osdmap_epoch = ceph_decode_32(&p);
1214
f24e9980
SW		 1215 /* lookup */
1216 mutex_lock(&osdc->request_mutex);
1217 req = __lookup_request(osdc, tid);
1218 if (req == NULL) {
1219 dout("handle_reply tid %llu dne\n", tid);
1220 mutex_unlock(&osdc->request_mutex);
1221 return;
1222 }
1223 ceph_osdc_get_request(req);
1b83bef2
SW		 1224
1225 dout("handle_reply %p tid %llu req %p result %d\n", msg, tid,
1226 req, result);
1227
1228 ceph_decode_need(&p, end, 4, bad);
1229 numops = ceph_decode_32(&p);
1230 if (numops > CEPH_OSD_MAX_OP)
1231 goto bad_put;
1232 if (numops != req->r_num_ops)
1233 goto bad_put;
1234 payload_len = 0;
1235 ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad);
1236 for (i = 0; i < numops; i++) {
1237 struct ceph_osd_op *op = p;
1238 int len;
1239
1240 len = le32_to_cpu(op->payload_len);
1241 req->r_reply_op_len[i] = len;
1242 dout(" op %d has %d bytes\n", i, len);
1243 payload_len += len;
1244 p += sizeof(*op);
1245 }
1246 if (payload_len != le32_to_cpu(msg->hdr.data_len)) {
1247 pr_warning("sum of op payload lens %d != data_len %d",
1248 payload_len, le32_to_cpu(msg->hdr.data_len));
1249 goto bad_put;
1250 }
1251
1252 ceph_decode_need(&p, end, 4 + numops * 4, bad);
1253 retry_attempt = ceph_decode_32(&p);
1254 for (i = 0; i < numops; i++)
1255 req->r_reply_op_result[i] = ceph_decode_32(&p);
f24e9980 1256
350b1c32 1257 /*
0d59ab81 1258 * if this connection filled our message, drop our reference now, to
350b1c32
SW		 1259 * avoid a (safe but slower) revoke later.
1260 */
0d59ab81 1261 if (req->r_con_filling_msg == con && req->r_reply == msg) {
c16e7869 1262 dout(" dropping con_filling_msg ref %p\n", con);
0d59ab81 1263 req->r_con_filling_msg = NULL;
0d47766f 1264 con->ops->put(con);
350b1c32
SW		 1265 }
1266
f24e9980 1267 if (!req->r_got_reply) {
95c96174 1268 unsigned int bytes;
f24e9980 1269
1b83bef2 1270 req->r_result = result;
f24e9980
SW		 1271 bytes = le32_to_cpu(msg->hdr.data_len);
1272 dout("handle_reply result %d bytes %d\n", req->r_result,
1273 bytes);
1274 if (req->r_result == 0)
1275 req->r_result = bytes;
1276
1277 /* in case this is a write and we need to replay, */
1b83bef2
SW		 1278 req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch);
1279 req->r_reassert_version.version = cpu_to_le64(reassert_version);
f24e9980
SW		 1280
1281 req->r_got_reply = 1;
1282 } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) {
1283 dout("handle_reply tid %llu dup ack\n", tid);
34b43a56 1284 mutex_unlock(&osdc->request_mutex);
f24e9980
SW		 1285 goto done;
1286 }
1287
1288 dout("handle_reply tid %llu flags %d\n", tid, flags);
1289
a40c4f10
YS		 1290 if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK))
1291 __register_linger_request(osdc, req);
1292
f24e9980 1293 /* either this is a read, or we got the safe response */
0ceed5db
SW		 1294 if (result < 0 ||
1295 (flags & CEPH_OSD_FLAG_ONDISK) ||
f24e9980
SW		 1296 ((flags & CEPH_OSD_FLAG_WRITE) == 0))
1297 __unregister_request(osdc, req);
1298
0d5af164
AE		 1299 already_completed = req->r_completed;
1300 req->r_completed = 1;
f24e9980 1301 mutex_unlock(&osdc->request_mutex);
0d5af164
AE		 1302 if (already_completed)
1303 goto done;
f24e9980
SW		 1304
1305 if (req->r_callback)
1306 req->r_callback(req, msg);
1307 else
03066f23 1308 complete_all(&req->r_completion);
f24e9980 1309
25845472
SW		 1310 if (flags & CEPH_OSD_FLAG_ONDISK)
1311 complete_request(req);
f24e9980
SW		 1312
1313done:
a40c4f10 1314 dout("req=%p req->r_linger=%d\n", req, req->r_linger);
f24e9980
SW		 1315 ceph_osdc_put_request(req);
1316 return;
1317
1b83bef2
SW		 1318bad_put:
1319 ceph_osdc_put_request(req);
f24e9980 1320bad:
1b83bef2
SW		 1321 pr_err("corrupt osd_op_reply got %d %d\n",
1322 (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len));
9ec7cab1 1323 ceph_msg_dump(msg);
f24e9980
SW		 1324}
1325
6f6c7006 1326static void reset_changed_osds(struct ceph_osd_client *osdc)
f24e9980 1327{
f24e9980 1328 struct rb_node *p, *n;
f24e9980 1329
6f6c7006
SW		 1330 for (p = rb_first(&osdc->osds); p; p = n) {
1331 struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node);
f24e9980 1332
6f6c7006
SW		 1333 n = rb_next(p);
1334 if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) ||
1335 memcmp(&osd->o_con.peer_addr,
1336 ceph_osd_addr(osdc->osdmap,
1337 osd->o_osd),
1338 sizeof(struct ceph_entity_addr)) != 0)
1339 __reset_osd(osdc, osd);
f24e9980 1340 }
422d2cb8
YS		 1341}
1342
1343/*
6f6c7006
SW		 1344 * Requeue requests whose mapping to an OSD has changed. If requests map to
1345 * no osd, request a new map.
422d2cb8 1346 *
e6d50f67 1347 * Caller should hold map_sem for read.
422d2cb8 1348 */
38d6453c 1349static void kick_requests(struct ceph_osd_client *osdc, int force_resend)
422d2cb8 1350{
a40c4f10 1351 struct ceph_osd_request *req, *nreq;
6f6c7006
SW		 1352 struct rb_node *p;
1353 int needmap = 0;
1354 int err;
422d2cb8 1355
38d6453c 1356 dout("kick_requests %s\n", force_resend ? " (force resend)" : "");
422d2cb8 1357 mutex_lock(&osdc->request_mutex);
6194ea89 1358 for (p = rb_first(&osdc->requests); p; ) {
6f6c7006 1359 req = rb_entry(p, struct ceph_osd_request, r_node);
6194ea89 1360 p = rb_next(p);
ab60b16d
AE		 1361
1362 /*
1363 * For linger requests that have not yet been
1364 * registered, move them to the linger list; they'll
1365 * be sent to the osd in the loop below. Unregister
1366 * the request before re-registering it as a linger
1367 * request to ensure the __map_request() below
1368 * will decide it needs to be sent.
1369 */
1370 if (req->r_linger && list_empty(&req->r_linger_item)) {
1371 dout("%p tid %llu restart on osd%d\n",
1372 req, req->r_tid,
1373 req->r_osd ? req->r_osd->o_osd : -1);
1374 __unregister_request(osdc, req);
1375 __register_linger_request(osdc, req);
1376 continue;
1377 }
1378
38d6453c 1379 err = __map_request(osdc, req, force_resend);
6f6c7006
SW		 1380 if (err < 0)
1381 continue; /* error */
1382 if (req->r_osd == NULL) {
1383 dout("%p tid %llu maps to no osd\n", req, req->r_tid);
1384 needmap++; /* request a newer map */
1385 } else if (err > 0) {
6194ea89
SW		 1386 if (!req->r_linger) {
1387 dout("%p tid %llu requeued on osd%d\n", req,
1388 req->r_tid,
1389 req->r_osd ? req->r_osd->o_osd : -1);
a40c4f10 1390 req->r_flags |= CEPH_OSD_FLAG_RETRY;
6194ea89
SW		 1391 }
1392 }
a40c4f10
YS		 1393 }
1394
1395 list_for_each_entry_safe(req, nreq, &osdc->req_linger,
1396 r_linger_item) {
1397 dout("linger req=%p req->r_osd=%p\n", req, req->r_osd);
1398
38d6453c 1399 err = __map_request(osdc, req, force_resend);
ab60b16d 1400 dout("__map_request returned %d\n", err);
a40c4f10
YS		 1401 if (err == 0)
1402 continue; /* no change and no osd was specified */
1403 if (err < 0)
1404 continue; /* hrm! */
1405 if (req->r_osd == NULL) {
1406 dout("tid %llu maps to no valid osd\n", req->r_tid);
1407 needmap++; /* request a newer map */
1408 continue;
6f6c7006 1409 }
a40c4f10
YS		 1410
1411 dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid,
1412 req->r_osd ? req->r_osd->o_osd : -1);
a40c4f10 1413 __register_request(osdc, req);
c89ce05e 1414 __unregister_linger_request(osdc, req);
6f6c7006 1415 }
f24e9980
SW		 1416 mutex_unlock(&osdc->request_mutex);
1417
1418 if (needmap) {
1419 dout("%d requests for down osds, need new map\n", needmap);
1420 ceph_monc_request_next_osdmap(&osdc->client->monc);
1421 }
e6d50f67 1422 reset_changed_osds(osdc);
422d2cb8 1423}
6f6c7006
SW		 1424
1425
f24e9980
SW		 1426/*
1427 * Process updated osd map.
1428 *
1429 * The message contains any number of incremental and full maps, normally
1430 * indicating some sort of topology change in the cluster. Kick requests
1431 * off to different OSDs as needed.
1432 */
1433void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
1434{
1435 void *p, *end, *next;
1436 u32 nr_maps, maplen;
1437 u32 epoch;
1438 struct ceph_osdmap *newmap = NULL, *oldmap;
1439 int err;
1440 struct ceph_fsid fsid;
1441
1442 dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0);
1443 p = msg->front.iov_base;
1444 end = p + msg->front.iov_len;
1445
1446 /* verify fsid */
1447 ceph_decode_need(&p, end, sizeof(fsid), bad);
1448 ceph_decode_copy(&p, &fsid, sizeof(fsid));
0743304d
SW		 1449 if (ceph_check_fsid(osdc->client, &fsid) < 0)
1450 return;
f24e9980
SW		 1451
1452 down_write(&osdc->map_sem);
1453
1454 /* incremental maps */
1455 ceph_decode_32_safe(&p, end, nr_maps, bad);
1456 dout(" %d inc maps\n", nr_maps);
1457 while (nr_maps > 0) {
1458 ceph_decode_need(&p, end, 2*sizeof(u32), bad);
c89136ea
SW		 1459 epoch = ceph_decode_32(&p);
1460 maplen = ceph_decode_32(&p);
f24e9980
SW		 1461 ceph_decode_need(&p, end, maplen, bad);
1462 next = p + maplen;
1463 if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) {
1464 dout("applying incremental map %u len %d\n",
1465 epoch, maplen);
1466 newmap = osdmap_apply_incremental(&p, next,
1467 osdc->osdmap,
15d9882c 1468 &osdc->client->msgr);
f24e9980
SW		 1469 if (IS_ERR(newmap)) {
1470 err = PTR_ERR(newmap);
1471 goto bad;
1472 }
30dc6381 1473 BUG_ON(!newmap);
f24e9980
SW		 1474 if (newmap != osdc->osdmap) {
1475 ceph_osdmap_destroy(osdc->osdmap);
1476 osdc->osdmap = newmap;
1477 }
38d6453c 1478 kick_requests(osdc, 0);
f24e9980
SW		 1479 } else {
1480 dout("ignoring incremental map %u len %d\n",
1481 epoch, maplen);
1482 }
1483 p = next;
1484 nr_maps--;
1485 }
1486 if (newmap)
1487 goto done;
1488
1489 /* full maps */
1490 ceph_decode_32_safe(&p, end, nr_maps, bad);
1491 dout(" %d full maps\n", nr_maps);
1492 while (nr_maps) {
1493 ceph_decode_need(&p, end, 2*sizeof(u32), bad);
c89136ea
SW		 1494 epoch = ceph_decode_32(&p);
1495 maplen = ceph_decode_32(&p);
f24e9980
SW		 1496 ceph_decode_need(&p, end, maplen, bad);
1497 if (nr_maps > 1) {
1498 dout("skipping non-latest full map %u len %d\n",
1499 epoch, maplen);
1500 } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) {
1501 dout("skipping full map %u len %d, "
1502 "older than our %u\n", epoch, maplen,
1503 osdc->osdmap->epoch);
1504 } else {
38d6453c
SW		 1505 int skipped_map = 0;
1506
f24e9980
SW		 1507 dout("taking full map %u len %d\n", epoch, maplen);
1508 newmap = osdmap_decode(&p, p+maplen);
1509 if (IS_ERR(newmap)) {
1510 err = PTR_ERR(newmap);
1511 goto bad;
1512 }
30dc6381 1513 BUG_ON(!newmap);
f24e9980
SW		 1514 oldmap = osdc->osdmap;
1515 osdc->osdmap = newmap;
38d6453c
SW		 1516 if (oldmap) {
1517 if (oldmap->epoch + 1 < newmap->epoch)
1518 skipped_map = 1;
f24e9980 1519 ceph_osdmap_destroy(oldmap);
38d6453c
SW		 1520 }
1521 kick_requests(osdc, skipped_map);
f24e9980
SW		 1522 }
1523 p += maplen;
1524 nr_maps--;
1525 }
1526
1527done:
1528 downgrade_write(&osdc->map_sem);
1529 ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch);
cd634fb6
SW		 1530
1531 /*
1532 * subscribe to subsequent osdmap updates if full to ensure
1533 * we find out when we are no longer full and stop returning
1534 * ENOSPC.
1535 */
1536 if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL))
1537 ceph_monc_request_next_osdmap(&osdc->client->monc);
1538
f9d25199
AE		 1539 mutex_lock(&osdc->request_mutex);
1540 __send_queued(osdc);
1541 mutex_unlock(&osdc->request_mutex);
f24e9980 1542 up_read(&osdc->map_sem);
03066f23 1543 wake_up_all(&osdc->client->auth_wq);
f24e9980
SW		 1544 return;
1545
1546bad:
1547 pr_err("osdc handle_map corrupt msg\n");
9ec7cab1 1548 ceph_msg_dump(msg);
f24e9980
SW		 1549 up_write(&osdc->map_sem);
1550 return;
1551}
1552
a40c4f10
YS		 1553/*
1554 * watch/notify callback event infrastructure
1555 *
1556 * These callbacks are used both for watch and notify operations.
1557 */
1558static void __release_event(struct kref *kref)
1559{
1560 struct ceph_osd_event *event =
1561 container_of(kref, struct ceph_osd_event, kref);
1562
1563 dout("__release_event %p\n", event);
1564 kfree(event);
1565}
1566
1567static void get_event(struct ceph_osd_event *event)
1568{
1569 kref_get(&event->kref);
1570}
1571
1572void ceph_osdc_put_event(struct ceph_osd_event *event)
1573{
1574 kref_put(&event->kref, __release_event);
1575}
1576EXPORT_SYMBOL(ceph_osdc_put_event);
1577
1578static void __insert_event(struct ceph_osd_client *osdc,
1579 struct ceph_osd_event *new)
1580{
1581 struct rb_node **p = &osdc->event_tree.rb_node;
1582 struct rb_node *parent = NULL;
1583 struct ceph_osd_event *event = NULL;
1584
1585 while (*p) {
1586 parent = *p;
1587 event = rb_entry(parent, struct ceph_osd_event, node);
1588 if (new->cookie < event->cookie)
1589 p = &(*p)->rb_left;
1590 else if (new->cookie > event->cookie)
1591 p = &(*p)->rb_right;
1592 else
1593 BUG();
1594 }
1595
1596 rb_link_node(&new->node, parent, p);
1597 rb_insert_color(&new->node, &osdc->event_tree);
1598}
1599
1600static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc,
1601 u64 cookie)
1602{
1603 struct rb_node **p = &osdc->event_tree.rb_node;
1604 struct rb_node *parent = NULL;
1605 struct ceph_osd_event *event = NULL;
1606
1607 while (*p) {
1608 parent = *p;
1609 event = rb_entry(parent, struct ceph_osd_event, node);
1610 if (cookie < event->cookie)
1611 p = &(*p)->rb_left;
1612 else if (cookie > event->cookie)
1613 p = &(*p)->rb_right;
1614 else
1615 return event;
1616 }
1617 return NULL;
1618}
1619
1620static void __remove_event(struct ceph_osd_event *event)
1621{
1622 struct ceph_osd_client *osdc = event->osdc;
1623
1624 if (!RB_EMPTY_NODE(&event->node)) {
1625 dout("__remove_event removed %p\n", event);
1626 rb_erase(&event->node, &osdc->event_tree);
1627 ceph_osdc_put_event(event);
1628 } else {
1629 dout("__remove_event didn't remove %p\n", event);
1630 }
1631}
1632
1633int ceph_osdc_create_event(struct ceph_osd_client *osdc,
1634 void (*event_cb)(u64, u64, u8, void *),
3c663bbd 1635 void *data, struct ceph_osd_event **pevent)
a40c4f10
YS		 1636{
1637 struct ceph_osd_event *event;
1638
1639 event = kmalloc(sizeof(*event), GFP_NOIO);
1640 if (!event)
1641 return -ENOMEM;
1642
1643 dout("create_event %p\n", event);
1644 event->cb = event_cb;
3c663bbd 1645 event->one_shot = 0;
a40c4f10
YS		 1646 event->data = data;
1647 event->osdc = osdc;
1648 INIT_LIST_HEAD(&event->osd_node);
3ee5234d 1649 RB_CLEAR_NODE(&event->node);
a40c4f10
YS		 1650 kref_init(&event->kref); /* one ref for us */
1651 kref_get(&event->kref); /* one ref for the caller */
a40c4f10
YS		 1652
1653 spin_lock(&osdc->event_lock);
1654 event->cookie = ++osdc->event_count;
1655 __insert_event(osdc, event);
1656 spin_unlock(&osdc->event_lock);
1657
1658 *pevent = event;
1659 return 0;
1660}
1661EXPORT_SYMBOL(ceph_osdc_create_event);
1662
1663void ceph_osdc_cancel_event(struct ceph_osd_event *event)
1664{
1665 struct ceph_osd_client *osdc = event->osdc;
1666
1667 dout("cancel_event %p\n", event);
1668 spin_lock(&osdc->event_lock);
1669 __remove_event(event);
1670 spin_unlock(&osdc->event_lock);
1671 ceph_osdc_put_event(event); /* caller's */
1672}
1673EXPORT_SYMBOL(ceph_osdc_cancel_event);
1674
1675
1676static void do_event_work(struct work_struct *work)
1677{
1678 struct ceph_osd_event_work *event_work =
1679 container_of(work, struct ceph_osd_event_work, work);
1680 struct ceph_osd_event *event = event_work->event;
1681 u64 ver = event_work->ver;
1682 u64 notify_id = event_work->notify_id;
1683 u8 opcode = event_work->opcode;
1684
1685 dout("do_event_work completing %p\n", event);
1686 event->cb(ver, notify_id, opcode, event->data);
a40c4f10
YS		 1687 dout("do_event_work completed %p\n", event);
1688 ceph_osdc_put_event(event);
1689 kfree(event_work);
1690}
1691
1692
1693/*
1694 * Process osd watch notifications
1695 */
3c663bbd
AE		 1696static void handle_watch_notify(struct ceph_osd_client *osdc,
1697 struct ceph_msg *msg)
a40c4f10
YS		 1698{
1699 void *p, *end;
1700 u8 proto_ver;
1701 u64 cookie, ver, notify_id;
1702 u8 opcode;
1703 struct ceph_osd_event *event;
1704 struct ceph_osd_event_work *event_work;
1705
1706 p = msg->front.iov_base;
1707 end = p + msg->front.iov_len;
1708
1709 ceph_decode_8_safe(&p, end, proto_ver, bad);
1710 ceph_decode_8_safe(&p, end, opcode, bad);
1711 ceph_decode_64_safe(&p, end, cookie, bad);
1712 ceph_decode_64_safe(&p, end, ver, bad);
1713 ceph_decode_64_safe(&p, end, notify_id, bad);
1714
1715 spin_lock(&osdc->event_lock);
1716 event = __find_event(osdc, cookie);
1717 if (event) {
3c663bbd 1718 BUG_ON(event->one_shot);
a40c4f10 1719 get_event(event);
a40c4f10
YS		 1720 }
1721 spin_unlock(&osdc->event_lock);
1722 dout("handle_watch_notify cookie %lld ver %lld event %p\n",
1723 cookie, ver, event);
1724 if (event) {
1725 event_work = kmalloc(sizeof(*event_work), GFP_NOIO);
a40c4f10
YS		 1726 if (!event_work) {
1727 dout("ERROR: could not allocate event_work\n");
1728 goto done_err;
1729 }
6b0ae409 1730 INIT_WORK(&event_work->work, do_event_work);
a40c4f10
YS		 1731 event_work->event = event;
1732 event_work->ver = ver;
1733 event_work->notify_id = notify_id;
1734 event_work->opcode = opcode;
1735 if (!queue_work(osdc->notify_wq, &event_work->work)) {
1736 dout("WARNING: failed to queue notify event work\n");
1737 goto done_err;
1738 }
1739 }
1740
1741 return;
1742
1743done_err:
a40c4f10
YS		 1744 ceph_osdc_put_event(event);
1745 return;
1746
1747bad:
1748 pr_err("osdc handle_watch_notify corrupt msg\n");
1749 return;
1750}
1751
70636773
AE		 1752static void ceph_osdc_msg_data_set(struct ceph_msg *msg,
1753 struct ceph_osd_data *osd_data)
f24e9980 1754{
0fff87ec 1755 if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) {
f1baeb2b 1756 BUG_ON(osd_data->length > (u64) SIZE_MAX);
ebf18f47 1757 if (osd_data->length)
70636773
AE		 1758 ceph_msg_data_set_pages(msg, osd_data->pages,
1759 osd_data->length, osd_data->alignment);
68b4476b 1760#ifdef CONFIG_BLOCK
0fff87ec 1761 } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) {
70636773 1762 ceph_msg_data_set_bio(msg, osd_data->bio);
68b4476b 1763#endif
2ac2b7a6 1764 } else {
0fff87ec 1765 BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE);
2ac2b7a6 1766 }
70636773
AE		 1767}
1768
1769/*
1770 * Register request, send initial attempt.
1771 */
1772int ceph_osdc_start_request(struct ceph_osd_client *osdc,
1773 struct ceph_osd_request *req,
1774 bool nofail)
1775{
1776 int rc = 0;
1777
1778 /* Set up response incoming data and request outgoing data fields */
1779
1780 ceph_osdc_msg_data_set(req->r_reply, &req->r_data_in);
1781 ceph_osdc_msg_data_set(req->r_request, &req->r_data_out);
ebf18f47
AE		 1782 if (req->r_trail.length)
1783 ceph_msg_data_set_trail(req->r_request, &req->r_trail);
f24e9980
SW		 1784
1785 register_request(osdc, req);
1786
1787 down_read(&osdc->map_sem);
1788 mutex_lock(&osdc->request_mutex);
c1ea8823
SW		 1789 /*
1790 * a racing kick_requests() may have sent the message for us
1791 * while we dropped request_mutex above, so only send now if
1792 * the request still han't been touched yet.
1793 */
1794 if (req->r_sent == 0) {
38d6453c 1795 rc = __map_request(osdc, req, 0);
9d6fcb08
SW		 1796 if (rc < 0) {
1797 if (nofail) {
1798 dout("osdc_start_request failed map, "
1799 " will retry %lld\n", req->r_tid);
1800 rc = 0;
1801 }
234af26f 1802 goto out_unlock;
9d6fcb08 1803 }
6f6c7006
SW		 1804 if (req->r_osd == NULL) {
1805 dout("send_request %p no up osds in pg\n", req);
1806 ceph_monc_request_next_osdmap(&osdc->client->monc);
1807 } else {
56e925b6 1808 __send_request(osdc, req);
f24e9980 1809 }
56e925b6 1810 rc = 0;
f24e9980 1811 }
234af26f
DC		 1812
1813out_unlock:
f24e9980
SW		 1814 mutex_unlock(&osdc->request_mutex);
1815 up_read(&osdc->map_sem);
1816 return rc;
1817}
3d14c5d2 1818EXPORT_SYMBOL(ceph_osdc_start_request);
f24e9980
SW		 1819
1820/*
1821 * wait for a request to complete
1822 */
1823int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
1824 struct ceph_osd_request *req)
1825{
1826 int rc;
1827
1828 rc = wait_for_completion_interruptible(&req->r_completion);
1829 if (rc < 0) {
1830 mutex_lock(&osdc->request_mutex);
1831 __cancel_request(req);
529cfcc4 1832 __unregister_request(osdc, req);
f24e9980 1833 mutex_unlock(&osdc->request_mutex);
25845472 1834 complete_request(req);
529cfcc4 1835 dout("wait_request tid %llu canceled/timed out\n", req->r_tid);
f24e9980
SW		 1836 return rc;
1837 }
1838
1839 dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result);
1840 return req->r_result;
1841}
3d14c5d2 1842EXPORT_SYMBOL(ceph_osdc_wait_request);
f24e9980
SW		 1843
1844/*
1845 * sync - wait for all in-flight requests to flush. avoid starvation.
1846 */
1847void ceph_osdc_sync(struct ceph_osd_client *osdc)
1848{
1849 struct ceph_osd_request *req;
1850 u64 last_tid, next_tid = 0;
1851
1852 mutex_lock(&osdc->request_mutex);
1853 last_tid = osdc->last_tid;
1854 while (1) {
1855 req = __lookup_request_ge(osdc, next_tid);
1856 if (!req)
1857 break;
1858 if (req->r_tid > last_tid)
1859 break;
1860
1861 next_tid = req->r_tid + 1;
1862 if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0)
1863 continue;
1864
1865 ceph_osdc_get_request(req);
1866 mutex_unlock(&osdc->request_mutex);
1867 dout("sync waiting on tid %llu (last is %llu)\n",
1868 req->r_tid, last_tid);
1869 wait_for_completion(&req->r_safe_completion);
1870 mutex_lock(&osdc->request_mutex);
1871 ceph_osdc_put_request(req);
1872 }
1873 mutex_unlock(&osdc->request_mutex);
1874 dout("sync done (thru tid %llu)\n", last_tid);
1875}
3d14c5d2 1876EXPORT_SYMBOL(ceph_osdc_sync);
f24e9980
SW		 1877
1878/*
1879 * init, shutdown
1880 */
1881int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client)
1882{
1883 int err;
1884
1885 dout("init\n");
1886 osdc->client = client;
1887 osdc->osdmap = NULL;
1888 init_rwsem(&osdc->map_sem);
1889 init_completion(&osdc->map_waiters);
1890 osdc->last_requested_map = 0;
1891 mutex_init(&osdc->request_mutex);
f24e9980
SW		 1892 osdc->last_tid = 0;
1893 osdc->osds = RB_ROOT;
f5a2041b 1894 INIT_LIST_HEAD(&osdc->osd_lru);
f24e9980 1895 osdc->requests = RB_ROOT;
422d2cb8 1896 INIT_LIST_HEAD(&osdc->req_lru);
6f6c7006
SW		 1897 INIT_LIST_HEAD(&osdc->req_unsent);
1898 INIT_LIST_HEAD(&osdc->req_notarget);
a40c4f10 1899 INIT_LIST_HEAD(&osdc->req_linger);
f24e9980
SW		 1900 osdc->num_requests = 0;
1901 INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout);
f5a2041b 1902 INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout);
a40c4f10
YS		 1903 spin_lock_init(&osdc->event_lock);
1904 osdc->event_tree = RB_ROOT;
1905 osdc->event_count = 0;
f5a2041b
YS		 1906
1907 schedule_delayed_work(&osdc->osds_timeout_work,
3d14c5d2 1908 round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ));
f24e9980 1909
5f44f142 1910 err = -ENOMEM;
f24e9980
SW		 1911 osdc->req_mempool = mempool_create_kmalloc_pool(10,
1912 sizeof(struct ceph_osd_request));
1913 if (!osdc->req_mempool)
5f44f142 1914 goto out;
f24e9980 1915
d50b409f
SW		 1916 err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP,
1917 OSD_OP_FRONT_LEN, 10, true,
4f48280e 1918 "osd_op");
f24e9980 1919 if (err < 0)
5f44f142 1920 goto out_mempool;
d50b409f 1921 err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY,
4f48280e
SW		 1922 OSD_OPREPLY_FRONT_LEN, 10, true,
1923 "osd_op_reply");
c16e7869
SW		 1924 if (err < 0)
1925 goto out_msgpool;
a40c4f10
YS		 1926
1927 osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify");
1928 if (IS_ERR(osdc->notify_wq)) {
1929 err = PTR_ERR(osdc->notify_wq);
1930 osdc->notify_wq = NULL;
1931 goto out_msgpool;
1932 }
f24e9980 1933 return 0;
5f44f142 1934
c16e7869
SW		 1935out_msgpool:
1936 ceph_msgpool_destroy(&osdc->msgpool_op);
5f44f142
SW		 1937out_mempool:
1938 mempool_destroy(osdc->req_mempool);
1939out:
1940 return err;
f24e9980
SW		 1941}
1942
1943void ceph_osdc_stop(struct ceph_osd_client *osdc)
1944{
a40c4f10
YS		 1945 flush_workqueue(osdc->notify_wq);
1946 destroy_workqueue(osdc->notify_wq);
f24e9980 1947 cancel_delayed_work_sync(&osdc->timeout_work);
f5a2041b 1948 cancel_delayed_work_sync(&osdc->osds_timeout_work);
f24e9980
SW		 1949 if (osdc->osdmap) {
1950 ceph_osdmap_destroy(osdc->osdmap);
1951 osdc->osdmap = NULL;
1952 }
aca420bc 1953 remove_all_osds(osdc);
f24e9980
SW		 1954 mempool_destroy(osdc->req_mempool);
1955 ceph_msgpool_destroy(&osdc->msgpool_op);
c16e7869 1956 ceph_msgpool_destroy(&osdc->msgpool_op_reply);
f24e9980
SW		 1957}
1958
1959/*
1960 * Read some contiguous pages. If we cross a stripe boundary, shorten
1961 * *plen. Return number of bytes read, or error.
1962 */
1963int ceph_osdc_readpages(struct ceph_osd_client *osdc,
1964 struct ceph_vino vino, struct ceph_file_layout *layout,
1965 u64 off, u64 *plen,
1966 u32 truncate_seq, u64 truncate_size,
b7495fc2 1967 struct page **pages, int num_pages, int page_align)
f24e9980
SW		 1968{
1969 struct ceph_osd_request *req;
0fff87ec 1970 struct ceph_osd_data *osd_data;
f24e9980
SW		 1971 int rc = 0;
1972
1973 dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino,
1974 vino.snap, off, *plen);
1975 req = ceph_osdc_new_request(osdc, layout, vino, off, plen,
1976 CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ,
1977 NULL, 0, truncate_seq, truncate_size, NULL,
153e5167 1978 false);
6816282d
SW		 1979 if (IS_ERR(req))
1980 return PTR_ERR(req);
f24e9980
SW		 1981
1982 /* it may be a short read due to an object boundary */
0fff87ec
AE		 1983
1984 osd_data = &req->r_data_in;
1985 osd_data->type = CEPH_OSD_DATA_TYPE_PAGES;
1986 osd_data->pages = pages;
e0c59487 1987 osd_data->length = *plen;
0fff87ec 1988 osd_data->alignment = page_align;
f24e9980 1989
e0c59487
AE		 1990 dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n",
1991 off, *plen, osd_data->length, page_align);
f24e9980
SW		 1992
1993 rc = ceph_osdc_start_request(osdc, req, false);
1994 if (!rc)
1995 rc = ceph_osdc_wait_request(osdc, req);
1996
1997 ceph_osdc_put_request(req);
1998 dout("readpages result %d\n", rc);
1999 return rc;
2000}
3d14c5d2 2001EXPORT_SYMBOL(ceph_osdc_readpages);
f24e9980
SW		 2002
2003/*
2004 * do a synchronous write on N pages
2005 */
2006int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino,
2007 struct ceph_file_layout *layout,
2008 struct ceph_snap_context *snapc,
2009 u64 off, u64 len,
2010 u32 truncate_seq, u64 truncate_size,
2011 struct timespec *mtime,
24808826 2012 struct page **pages, int num_pages)
f24e9980
SW		 2013{
2014 struct ceph_osd_request *req;
0fff87ec 2015 struct ceph_osd_data *osd_data;
f24e9980 2016 int rc = 0;
b7495fc2 2017 int page_align = off & ~PAGE_MASK;
f24e9980
SW		 2018
2019 BUG_ON(vino.snap != CEPH_NOSNAP);
2020 req = ceph_osdc_new_request(osdc, layout, vino, off, &len,
2021 CEPH_OSD_OP_WRITE,
24808826 2022 CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE,
fbf8685f 2023 snapc, 0,
f24e9980 2024 truncate_seq, truncate_size, mtime,
153e5167 2025 true);
6816282d
SW		 2026 if (IS_ERR(req))
2027 return PTR_ERR(req);
f24e9980
SW		 2028
2029 /* it may be a short write due to an object boundary */
0fff87ec
AE		 2030 osd_data = &req->r_data_out;
2031 osd_data->type = CEPH_OSD_DATA_TYPE_PAGES;
2032 osd_data->pages = pages;
e0c59487 2033 osd_data->length = len;
0fff87ec 2034 osd_data->alignment = page_align;
e0c59487 2035 dout("writepages %llu~%llu (%llu bytes)\n", off, len, osd_data->length);
f24e9980 2036
87f979d3 2037 rc = ceph_osdc_start_request(osdc, req, true);
f24e9980
SW		 2038 if (!rc)
2039 rc = ceph_osdc_wait_request(osdc, req);
2040
2041 ceph_osdc_put_request(req);
2042 if (rc == 0)
2043 rc = len;
2044 dout("writepages result %d\n", rc);
2045 return rc;
2046}
3d14c5d2 2047EXPORT_SYMBOL(ceph_osdc_writepages);
f24e9980
SW		 2048
2049/*
2050 * handle incoming message
2051 */
2052static void dispatch(struct ceph_connection *con, struct ceph_msg *msg)
2053{
2054 struct ceph_osd *osd = con->private;
32c895e7 2055 struct ceph_osd_client *osdc;
f24e9980
SW		 2056 int type = le16_to_cpu(msg->hdr.type);
2057
2058 if (!osd)
4a32f93d 2059 goto out;
32c895e7 2060 osdc = osd->o_osdc;
f24e9980
SW		 2061
2062 switch (type) {
2063 case CEPH_MSG_OSD_MAP:
2064 ceph_osdc_handle_map(osdc, msg);
2065 break;
2066 case CEPH_MSG_OSD_OPREPLY:
350b1c32 2067 handle_reply(osdc, msg, con);
f24e9980 2068 break;
a40c4f10
YS		 2069 case CEPH_MSG_WATCH_NOTIFY:
2070 handle_watch_notify(osdc, msg);
2071 break;
f24e9980
SW		 2072
2073 default:
2074 pr_err("received unknown message type %d %s\n", type,
2075 ceph_msg_type_name(type));
2076 }
4a32f93d 2077out:
f24e9980
SW		 2078 ceph_msg_put(msg);
2079}
2080
5b3a4db3 2081/*
21b667f6
SW		 2082 * lookup and return message for incoming reply. set up reply message
2083 * pages.
5b3a4db3
SW		 2084 */
2085static struct ceph_msg *get_reply(struct ceph_connection *con,
2450418c
YS		 2086 struct ceph_msg_header *hdr,
2087 int *skip)
f24e9980
SW		 2088{
2089 struct ceph_osd *osd = con->private;
2090 struct ceph_osd_client *osdc = osd->o_osdc;
2450418c 2091 struct ceph_msg *m;
0547a9b3 2092 struct ceph_osd_request *req;
5b3a4db3
SW		 2093 int front = le32_to_cpu(hdr->front_len);
2094 int data_len = le32_to_cpu(hdr->data_len);
0547a9b3 2095 u64 tid;
f24e9980 2096
0547a9b3
YS		 2097 tid = le64_to_cpu(hdr->tid);
2098 mutex_lock(&osdc->request_mutex);
2099 req = __lookup_request(osdc, tid);
2100 if (!req) {
2101 *skip = 1;
2102 m = NULL;
756a16a5
SW		 2103 dout("get_reply unknown tid %llu from osd%d\n", tid,
2104 osd->o_osd);
0547a9b3
YS		 2105 goto out;
2106 }
c16e7869
SW		 2107
2108 if (req->r_con_filling_msg) {
8921d114 2109 dout("%s revoking msg %p from old con %p\n", __func__,
c16e7869 2110 req->r_reply, req->r_con_filling_msg);
8921d114 2111 ceph_msg_revoke_incoming(req->r_reply);
0d47766f 2112 req->r_con_filling_msg->ops->put(req->r_con_filling_msg);
6f46cb29 2113 req->r_con_filling_msg = NULL;
0547a9b3
YS		 2114 }
2115
c16e7869
SW		 2116 if (front > req->r_reply->front.iov_len) {
2117 pr_warning("get_reply front %d > preallocated %d\n",
2118 front, (int)req->r_reply->front.iov_len);
b61c2763 2119 m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false);
a79832f2 2120 if (!m)
c16e7869
SW		 2121 goto out;
2122 ceph_msg_put(req->r_reply);
2123 req->r_reply = m;
2124 }
2125 m = ceph_msg_get(req->r_reply);
2126
0547a9b3 2127 if (data_len > 0) {
0fff87ec
AE		 2128 struct ceph_osd_data *osd_data = &req->r_data_in;
2129
2130 if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) {
0fff87ec 2131 if (osd_data->pages &&
e0c59487 2132 unlikely(osd_data->length < data_len)) {
2ac2b7a6 2133
e0c59487
AE		 2134 pr_warning("tid %lld reply has %d bytes "
2135 "we had only %llu bytes ready\n",
2136 tid, data_len, osd_data->length);
2ac2b7a6
AE		 2137 *skip = 1;
2138 ceph_msg_put(m);
2139 m = NULL;
2140 goto out;
2141 }
2ac2b7a6 2142 }
0547a9b3 2143 }
5b3a4db3 2144 *skip = 0;
0d47766f 2145 req->r_con_filling_msg = con->ops->get(con);
c16e7869 2146 dout("get_reply tid %lld %p\n", tid, m);
0547a9b3
YS		 2147
2148out:
2149 mutex_unlock(&osdc->request_mutex);
2450418c 2150 return m;
5b3a4db3
SW		 2151
2152}
2153
2154static struct ceph_msg *alloc_msg(struct ceph_connection *con,
2155 struct ceph_msg_header *hdr,
2156 int *skip)
2157{
2158 struct ceph_osd *osd = con->private;
2159 int type = le16_to_cpu(hdr->type);
2160 int front = le32_to_cpu(hdr->front_len);
2161
1c20f2d2 2162 *skip = 0;
5b3a4db3
SW		 2163 switch (type) {
2164 case CEPH_MSG_OSD_MAP:
a40c4f10 2165 case CEPH_MSG_WATCH_NOTIFY:
b61c2763 2166 return ceph_msg_new(type, front, GFP_NOFS, false);
5b3a4db3
SW		 2167 case CEPH_MSG_OSD_OPREPLY:
2168 return get_reply(con, hdr, skip);
2169 default:
2170 pr_info("alloc_msg unexpected msg type %d from osd%d\n", type,
2171 osd->o_osd);
2172 *skip = 1;
2173 return NULL;
2174 }
f24e9980
SW		 2175}
2176
2177/*
2178 * Wrappers to refcount containing ceph_osd struct
2179 */
2180static struct ceph_connection *get_osd_con(struct ceph_connection *con)
2181{
2182 struct ceph_osd *osd = con->private;
2183 if (get_osd(osd))
2184 return con;
2185 return NULL;
2186}
2187
2188static void put_osd_con(struct ceph_connection *con)
2189{
2190 struct ceph_osd *osd = con->private;
2191 put_osd(osd);
2192}
2193
4e7a5dcd
SW		 2194/*
2195 * authentication
2196 */
a3530df3
AE		 2197/*
2198 * Note: returned pointer is the address of a structure that's
2199 * managed separately. Caller must *not* attempt to free it.
2200 */
2201static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con,
8f43fb53 2202 int *proto, int force_new)
4e7a5dcd
SW		 2203{
2204 struct ceph_osd *o = con->private;
2205 struct ceph_osd_client *osdc = o->o_osdc;
2206 struct ceph_auth_client *ac = osdc->client->monc.auth;
74f1869f 2207 struct ceph_auth_handshake *auth = &o->o_auth;
4e7a5dcd 2208
74f1869f 2209 if (force_new && auth->authorizer) {
a255651d
AE		 2210 if (ac->ops && ac->ops->destroy_authorizer)
2211 ac->ops->destroy_authorizer(ac, auth->authorizer);
74f1869f
AE		 2212 auth->authorizer = NULL;
2213 }
a255651d 2214 if (!auth->authorizer && ac->ops && ac->ops->create_authorizer) {
a3530df3
AE		 2215 int ret = ac->ops->create_authorizer(ac, CEPH_ENTITY_TYPE_OSD,
2216 auth);
4e7a5dcd 2217 if (ret)
a3530df3 2218 return ERR_PTR(ret);
4e7a5dcd 2219 }
4e7a5dcd 2220 *proto = ac->protocol;
74f1869f 2221
a3530df3 2222 return auth;
4e7a5dcd
SW		 2223}
2224
2225
2226static int verify_authorizer_reply(struct ceph_connection *con, int len)
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
a255651d
AE		 2232 /*
2233 * XXX If ac->ops or ac->ops->verify_authorizer_reply is null,
2234 * XXX which do we do: succeed or fail?
2235 */
6c4a1915 2236 return ac->ops->verify_authorizer_reply(ac, o->o_auth.authorizer, len);
4e7a5dcd
SW		 2237}
2238
9bd2e6f8
SW		 2239static int invalidate_authorizer(struct ceph_connection *con)
2240{
2241 struct ceph_osd *o = con->private;
2242 struct ceph_osd_client *osdc = o->o_osdc;
2243 struct ceph_auth_client *ac = osdc->client->monc.auth;
2244
a255651d 2245 if (ac->ops && ac->ops->invalidate_authorizer)
9bd2e6f8
SW		 2246 ac->ops->invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD);
2247
2248 return ceph_monc_validate_auth(&osdc->client->monc);
2249}
4e7a5dcd 2250
9e32789f 2251static const struct ceph_connection_operations osd_con_ops = {
f24e9980
SW		 2252 .get = get_osd_con,
2253 .put = put_osd_con,
2254 .dispatch = dispatch,
4e7a5dcd
SW		 2255 .get_authorizer = get_authorizer,
2256 .verify_authorizer_reply = verify_authorizer_reply,
9bd2e6f8 2257 .invalidate_authorizer = invalidate_authorizer,
f24e9980 2258 .alloc_msg = alloc_msg,
81b024e7 2259 .fault = osd_reset,
f24e9980 2260};
Linux kernel - Deliverables
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