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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 | 24 | static const struct ceph_connection_operations osd_con_ops; |
f24e9980 | 25 | |
f9d25199 | 26 | static void __send_queued(struct ceph_osd_client *osdc); |
6f6c7006 | 27 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); |
a40c4f10 YS |
28 | static void __register_request(struct ceph_osd_client *osdc, |
29 | struct ceph_osd_request *req); | |
30 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
31 | struct ceph_osd_request *req); | |
56e925b6 SW |
32 | static void __send_request(struct ceph_osd_client *osdc, |
33 | struct ceph_osd_request *req); | |
f24e9980 | 34 | |
68b4476b YS |
35 | static 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 | */ | |
e75b45cf | 66 | static int calc_layout(struct ceph_vino vino, |
d63b77f4 SW |
67 | struct ceph_file_layout *layout, |
68 | u64 off, u64 *plen, | |
69 | struct ceph_osd_request *req, | |
70 | struct ceph_osd_req_op *op) | |
f24e9980 | 71 | { |
60e56f13 AE |
72 | u64 orig_len = *plen; |
73 | u64 bno = 0; | |
74 | u64 objoff = 0; | |
75 | u64 objlen = 0; | |
d63b77f4 | 76 | int r; |
f24e9980 | 77 | |
60e56f13 AE |
78 | /* object extent? */ |
79 | r = ceph_calc_file_object_mapping(layout, off, orig_len, &bno, | |
80 | &objoff, &objlen); | |
d63b77f4 SW |
81 | if (r < 0) |
82 | return r; | |
60e56f13 AE |
83 | if (objlen < orig_len) { |
84 | *plen = objlen; | |
85 | dout(" skipping last %llu, final file extent %llu~%llu\n", | |
86 | orig_len - *plen, off, *plen); | |
87 | } | |
88 | ||
89 | if (op_has_extent(op->op)) { | |
90 | u32 osize = le32_to_cpu(layout->fl_object_size); | |
91 | op->extent.offset = objoff; | |
92 | op->extent.length = objlen; | |
93 | if (op->extent.truncate_size <= off - objoff) { | |
94 | op->extent.truncate_size = 0; | |
95 | } else { | |
96 | op->extent.truncate_size -= off - objoff; | |
97 | if (op->extent.truncate_size > osize) | |
98 | op->extent.truncate_size = osize; | |
99 | } | |
100 | } | |
101 | req->r_num_pages = calc_pages_for(off, *plen); | |
102 | req->r_page_alignment = off & ~PAGE_MASK; | |
103 | if (op->op == CEPH_OSD_OP_WRITE) | |
104 | op->payload_len = *plen; | |
105 | ||
106 | dout("calc_layout bno=%llx %llu~%llu (%d pages)\n", | |
107 | bno, objoff, objlen, req->r_num_pages); | |
f24e9980 | 108 | |
2dab036b | 109 | snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno); |
f24e9980 | 110 | req->r_oid_len = strlen(req->r_oid); |
d63b77f4 SW |
111 | |
112 | return r; | |
f24e9980 SW |
113 | } |
114 | ||
f24e9980 SW |
115 | /* |
116 | * requests | |
117 | */ | |
415e49a9 | 118 | void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 119 | { |
415e49a9 SW |
120 | struct ceph_osd_request *req = container_of(kref, |
121 | struct ceph_osd_request, | |
122 | r_kref); | |
123 | ||
124 | if (req->r_request) | |
125 | ceph_msg_put(req->r_request); | |
0d59ab81 | 126 | if (req->r_con_filling_msg) { |
9cbb1d72 AE |
127 | dout("%s revoking msg %p from con %p\n", __func__, |
128 | req->r_reply, req->r_con_filling_msg); | |
8921d114 | 129 | ceph_msg_revoke_incoming(req->r_reply); |
0d47766f | 130 | req->r_con_filling_msg->ops->put(req->r_con_filling_msg); |
9cbb1d72 | 131 | req->r_con_filling_msg = NULL; |
350b1c32 | 132 | } |
ab8cb34a AE |
133 | if (req->r_reply) |
134 | ceph_msg_put(req->r_reply); | |
415e49a9 SW |
135 | if (req->r_own_pages) |
136 | ceph_release_page_vector(req->r_pages, | |
137 | req->r_num_pages); | |
138 | ceph_put_snap_context(req->r_snapc); | |
c885837f | 139 | ceph_pagelist_release(&req->r_trail); |
415e49a9 SW |
140 | if (req->r_mempool) |
141 | mempool_free(req, req->r_osdc->req_mempool); | |
142 | else | |
143 | kfree(req); | |
f24e9980 | 144 | } |
3d14c5d2 | 145 | EXPORT_SYMBOL(ceph_osdc_release_request); |
68b4476b | 146 | |
3499e8a5 | 147 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 148 | struct ceph_snap_context *snapc, |
1b83bef2 | 149 | unsigned int num_ops, |
3499e8a5 | 150 | bool use_mempool, |
54a54007 | 151 | gfp_t gfp_flags) |
f24e9980 SW |
152 | { |
153 | struct ceph_osd_request *req; | |
154 | struct ceph_msg *msg; | |
1b83bef2 SW |
155 | size_t msg_size; |
156 | ||
157 | msg_size = 4 + 4 + 8 + 8 + 4+8; | |
158 | msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ | |
159 | msg_size += 1 + 8 + 4 + 4; /* pg_t */ | |
160 | msg_size += 4 + MAX_OBJ_NAME_SIZE; | |
161 | msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); | |
162 | msg_size += 8; /* snapid */ | |
163 | msg_size += 8; /* snap_seq */ | |
164 | msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ | |
165 | msg_size += 4; | |
f24e9980 SW |
166 | |
167 | if (use_mempool) { | |
3499e8a5 | 168 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
f24e9980 SW |
169 | memset(req, 0, sizeof(*req)); |
170 | } else { | |
3499e8a5 | 171 | req = kzalloc(sizeof(*req), gfp_flags); |
f24e9980 SW |
172 | } |
173 | if (req == NULL) | |
a79832f2 | 174 | return NULL; |
f24e9980 | 175 | |
f24e9980 SW |
176 | req->r_osdc = osdc; |
177 | req->r_mempool = use_mempool; | |
68b4476b | 178 | |
415e49a9 | 179 | kref_init(&req->r_kref); |
f24e9980 SW |
180 | init_completion(&req->r_completion); |
181 | init_completion(&req->r_safe_completion); | |
a978fa20 | 182 | RB_CLEAR_NODE(&req->r_node); |
f24e9980 | 183 | INIT_LIST_HEAD(&req->r_unsafe_item); |
a40c4f10 YS |
184 | INIT_LIST_HEAD(&req->r_linger_item); |
185 | INIT_LIST_HEAD(&req->r_linger_osd); | |
935b639a | 186 | INIT_LIST_HEAD(&req->r_req_lru_item); |
cd43045c SW |
187 | INIT_LIST_HEAD(&req->r_osd_item); |
188 | ||
c16e7869 SW |
189 | /* create reply message */ |
190 | if (use_mempool) | |
191 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
192 | else | |
193 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, | |
b61c2763 | 194 | OSD_OPREPLY_FRONT_LEN, gfp_flags, true); |
a79832f2 | 195 | if (!msg) { |
c16e7869 | 196 | ceph_osdc_put_request(req); |
a79832f2 | 197 | return NULL; |
c16e7869 SW |
198 | } |
199 | req->r_reply = msg; | |
200 | ||
c885837f | 201 | ceph_pagelist_init(&req->r_trail); |
d50b409f | 202 | |
c16e7869 | 203 | /* create request message; allow space for oid */ |
f24e9980 | 204 | if (use_mempool) |
8f3bc053 | 205 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 206 | else |
b61c2763 | 207 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); |
a79832f2 | 208 | if (!msg) { |
f24e9980 | 209 | ceph_osdc_put_request(req); |
a79832f2 | 210 | return NULL; |
f24e9980 | 211 | } |
68b4476b | 212 | |
f24e9980 | 213 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 YS |
214 | |
215 | req->r_request = msg; | |
3499e8a5 YS |
216 | |
217 | return req; | |
218 | } | |
3d14c5d2 | 219 | EXPORT_SYMBOL(ceph_osdc_alloc_request); |
3499e8a5 | 220 | |
68b4476b YS |
221 | static void osd_req_encode_op(struct ceph_osd_request *req, |
222 | struct ceph_osd_op *dst, | |
223 | struct ceph_osd_req_op *src) | |
224 | { | |
225 | dst->op = cpu_to_le16(src->op); | |
226 | ||
065a68f9 | 227 | switch (src->op) { |
fbfab539 AE |
228 | case CEPH_OSD_OP_STAT: |
229 | break; | |
68b4476b YS |
230 | case CEPH_OSD_OP_READ: |
231 | case CEPH_OSD_OP_WRITE: | |
232 | dst->extent.offset = | |
233 | cpu_to_le64(src->extent.offset); | |
234 | dst->extent.length = | |
235 | cpu_to_le64(src->extent.length); | |
236 | dst->extent.truncate_size = | |
237 | cpu_to_le64(src->extent.truncate_size); | |
238 | dst->extent.truncate_seq = | |
239 | cpu_to_le32(src->extent.truncate_seq); | |
240 | break; | |
ae1533b6 | 241 | case CEPH_OSD_OP_CALL: |
ae1533b6 YS |
242 | dst->cls.class_len = src->cls.class_len; |
243 | dst->cls.method_len = src->cls.method_len; | |
244 | dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); | |
245 | ||
c885837f | 246 | ceph_pagelist_append(&req->r_trail, src->cls.class_name, |
ae1533b6 | 247 | src->cls.class_len); |
c885837f | 248 | ceph_pagelist_append(&req->r_trail, src->cls.method_name, |
ae1533b6 | 249 | src->cls.method_len); |
c885837f | 250 | ceph_pagelist_append(&req->r_trail, src->cls.indata, |
ae1533b6 YS |
251 | src->cls.indata_len); |
252 | break; | |
68b4476b YS |
253 | case CEPH_OSD_OP_STARTSYNC: |
254 | break; | |
a40c4f10 YS |
255 | case CEPH_OSD_OP_NOTIFY_ACK: |
256 | case CEPH_OSD_OP_WATCH: | |
257 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
258 | dst->watch.ver = cpu_to_le64(src->watch.ver); | |
259 | dst->watch.flag = src->watch.flag; | |
260 | break; | |
68b4476b YS |
261 | default: |
262 | pr_err("unrecognized osd opcode %d\n", dst->op); | |
263 | WARN_ON(1); | |
264 | break; | |
4c46459c AE |
265 | case CEPH_OSD_OP_MAPEXT: |
266 | case CEPH_OSD_OP_MASKTRUNC: | |
267 | case CEPH_OSD_OP_SPARSE_READ: | |
a9f36c3e | 268 | case CEPH_OSD_OP_NOTIFY: |
4c46459c AE |
269 | case CEPH_OSD_OP_ASSERT_VER: |
270 | case CEPH_OSD_OP_WRITEFULL: | |
271 | case CEPH_OSD_OP_TRUNCATE: | |
272 | case CEPH_OSD_OP_ZERO: | |
273 | case CEPH_OSD_OP_DELETE: | |
274 | case CEPH_OSD_OP_APPEND: | |
275 | case CEPH_OSD_OP_SETTRUNC: | |
276 | case CEPH_OSD_OP_TRIMTRUNC: | |
277 | case CEPH_OSD_OP_TMAPUP: | |
278 | case CEPH_OSD_OP_TMAPPUT: | |
279 | case CEPH_OSD_OP_TMAPGET: | |
280 | case CEPH_OSD_OP_CREATE: | |
a9f36c3e | 281 | case CEPH_OSD_OP_ROLLBACK: |
4c46459c AE |
282 | case CEPH_OSD_OP_OMAPGETKEYS: |
283 | case CEPH_OSD_OP_OMAPGETVALS: | |
284 | case CEPH_OSD_OP_OMAPGETHEADER: | |
285 | case CEPH_OSD_OP_OMAPGETVALSBYKEYS: | |
286 | case CEPH_OSD_OP_MODE_RD: | |
287 | case CEPH_OSD_OP_OMAPSETVALS: | |
288 | case CEPH_OSD_OP_OMAPSETHEADER: | |
289 | case CEPH_OSD_OP_OMAPCLEAR: | |
290 | case CEPH_OSD_OP_OMAPRMKEYS: | |
291 | case CEPH_OSD_OP_OMAP_CMP: | |
292 | case CEPH_OSD_OP_CLONERANGE: | |
293 | case CEPH_OSD_OP_ASSERT_SRC_VERSION: | |
294 | case CEPH_OSD_OP_SRC_CMPXATTR: | |
a9f36c3e | 295 | case CEPH_OSD_OP_GETXATTR: |
4c46459c | 296 | case CEPH_OSD_OP_GETXATTRS: |
a9f36c3e AE |
297 | case CEPH_OSD_OP_CMPXATTR: |
298 | case CEPH_OSD_OP_SETXATTR: | |
4c46459c AE |
299 | case CEPH_OSD_OP_SETXATTRS: |
300 | case CEPH_OSD_OP_RESETXATTRS: | |
301 | case CEPH_OSD_OP_RMXATTR: | |
302 | case CEPH_OSD_OP_PULL: | |
303 | case CEPH_OSD_OP_PUSH: | |
304 | case CEPH_OSD_OP_BALANCEREADS: | |
305 | case CEPH_OSD_OP_UNBALANCEREADS: | |
306 | case CEPH_OSD_OP_SCRUB: | |
307 | case CEPH_OSD_OP_SCRUB_RESERVE: | |
308 | case CEPH_OSD_OP_SCRUB_UNRESERVE: | |
309 | case CEPH_OSD_OP_SCRUB_STOP: | |
310 | case CEPH_OSD_OP_SCRUB_MAP: | |
311 | case CEPH_OSD_OP_WRLOCK: | |
312 | case CEPH_OSD_OP_WRUNLOCK: | |
313 | case CEPH_OSD_OP_RDLOCK: | |
314 | case CEPH_OSD_OP_RDUNLOCK: | |
315 | case CEPH_OSD_OP_UPLOCK: | |
316 | case CEPH_OSD_OP_DNLOCK: | |
317 | case CEPH_OSD_OP_PGLS: | |
318 | case CEPH_OSD_OP_PGLS_FILTER: | |
319 | pr_err("unsupported osd opcode %s\n", | |
320 | ceph_osd_op_name(dst->op)); | |
321 | WARN_ON(1); | |
322 | break; | |
68b4476b YS |
323 | } |
324 | dst->payload_len = cpu_to_le32(src->payload_len); | |
325 | } | |
326 | ||
3499e8a5 YS |
327 | /* |
328 | * build new request AND message | |
329 | * | |
330 | */ | |
331 | void ceph_osdc_build_request(struct ceph_osd_request *req, | |
1b83bef2 | 332 | u64 off, u64 len, unsigned int num_ops, |
68b4476b | 333 | struct ceph_osd_req_op *src_ops, |
4d6b250b | 334 | struct ceph_snap_context *snapc, u64 snap_id, |
af77f26c | 335 | struct timespec *mtime) |
3499e8a5 YS |
336 | { |
337 | struct ceph_msg *msg = req->r_request; | |
68b4476b | 338 | struct ceph_osd_req_op *src_op; |
3499e8a5 | 339 | void *p; |
1b83bef2 | 340 | size_t msg_size; |
3499e8a5 | 341 | int flags = req->r_flags; |
f44246e3 | 342 | u64 data_len; |
68b4476b | 343 | int i; |
3499e8a5 | 344 | |
1b83bef2 SW |
345 | req->r_num_ops = num_ops; |
346 | req->r_snapid = snap_id; | |
f24e9980 SW |
347 | req->r_snapc = ceph_get_snap_context(snapc); |
348 | ||
1b83bef2 SW |
349 | /* encode request */ |
350 | msg->hdr.version = cpu_to_le16(4); | |
351 | ||
352 | p = msg->front.iov_base; | |
353 | ceph_encode_32(&p, 1); /* client_inc is always 1 */ | |
354 | req->r_request_osdmap_epoch = p; | |
355 | p += 4; | |
356 | req->r_request_flags = p; | |
357 | p += 4; | |
358 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) | |
359 | ceph_encode_timespec(p, mtime); | |
360 | p += sizeof(struct ceph_timespec); | |
361 | req->r_request_reassert_version = p; | |
362 | p += sizeof(struct ceph_eversion); /* will get filled in */ | |
363 | ||
364 | /* oloc */ | |
365 | ceph_encode_8(&p, 4); | |
366 | ceph_encode_8(&p, 4); | |
367 | ceph_encode_32(&p, 8 + 4 + 4); | |
368 | req->r_request_pool = p; | |
369 | p += 8; | |
370 | ceph_encode_32(&p, -1); /* preferred */ | |
371 | ceph_encode_32(&p, 0); /* key len */ | |
372 | ||
373 | ceph_encode_8(&p, 1); | |
374 | req->r_request_pgid = p; | |
375 | p += 8 + 4; | |
376 | ceph_encode_32(&p, -1); /* preferred */ | |
377 | ||
378 | /* oid */ | |
379 | ceph_encode_32(&p, req->r_oid_len); | |
af77f26c | 380 | memcpy(p, req->r_oid, req->r_oid_len); |
1b83bef2 | 381 | dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); |
af77f26c | 382 | p += req->r_oid_len; |
f24e9980 | 383 | |
1b83bef2 SW |
384 | /* ops */ |
385 | ceph_encode_16(&p, num_ops); | |
68b4476b | 386 | src_op = src_ops; |
1b83bef2 SW |
387 | req->r_request_ops = p; |
388 | for (i = 0; i < num_ops; i++, src_op++) { | |
389 | osd_req_encode_op(req, p, src_op); | |
390 | p += sizeof(struct ceph_osd_op); | |
391 | } | |
68b4476b | 392 | |
1b83bef2 SW |
393 | /* snaps */ |
394 | ceph_encode_64(&p, req->r_snapid); | |
395 | ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); | |
396 | ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); | |
397 | if (req->r_snapc) { | |
f24e9980 | 398 | for (i = 0; i < snapc->num_snaps; i++) { |
1b83bef2 | 399 | ceph_encode_64(&p, req->r_snapc->snaps[i]); |
f24e9980 SW |
400 | } |
401 | } | |
402 | ||
1b83bef2 SW |
403 | req->r_request_attempts = p; |
404 | p += 4; | |
405 | ||
f44246e3 | 406 | data_len = req->r_trail.length; |
68b4476b YS |
407 | if (flags & CEPH_OSD_FLAG_WRITE) { |
408 | req->r_request->hdr.data_off = cpu_to_le16(off); | |
f44246e3 | 409 | data_len += len; |
68b4476b | 410 | } |
f44246e3 | 411 | req->r_request->hdr.data_len = cpu_to_le32(data_len); |
c5c6b19d SW |
412 | req->r_request->page_alignment = req->r_page_alignment; |
413 | ||
f24e9980 | 414 | BUG_ON(p > msg->front.iov_base + msg->front.iov_len); |
6f863e71 SW |
415 | msg_size = p - msg->front.iov_base; |
416 | msg->front.iov_len = msg_size; | |
417 | msg->hdr.front_len = cpu_to_le32(msg_size); | |
1b83bef2 SW |
418 | |
419 | dout("build_request msg_size was %d num_ops %d\n", (int)msg_size, | |
420 | num_ops); | |
3499e8a5 YS |
421 | return; |
422 | } | |
3d14c5d2 | 423 | EXPORT_SYMBOL(ceph_osdc_build_request); |
3499e8a5 YS |
424 | |
425 | /* | |
426 | * build new request AND message, calculate layout, and adjust file | |
427 | * extent as needed. | |
428 | * | |
429 | * if the file was recently truncated, we include information about its | |
430 | * old and new size so that the object can be updated appropriately. (we | |
431 | * avoid synchronously deleting truncated objects because it's slow.) | |
432 | * | |
433 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
434 | * data quickly. | |
435 | */ | |
436 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
437 | struct ceph_file_layout *layout, | |
438 | struct ceph_vino vino, | |
439 | u64 off, u64 *plen, | |
440 | int opcode, int flags, | |
441 | struct ceph_snap_context *snapc, | |
442 | int do_sync, | |
443 | u32 truncate_seq, | |
444 | u64 truncate_size, | |
445 | struct timespec *mtime, | |
a3bea47e | 446 | bool use_mempool, |
b7495fc2 | 447 | int page_align) |
3499e8a5 | 448 | { |
ae7ca4a3 | 449 | struct ceph_osd_req_op ops[2]; |
68b4476b | 450 | struct ceph_osd_request *req; |
ae7ca4a3 | 451 | unsigned int num_op = 1; |
6816282d | 452 | int r; |
68b4476b | 453 | |
ae7ca4a3 AE |
454 | memset(&ops, 0, sizeof ops); |
455 | ||
68b4476b YS |
456 | ops[0].op = opcode; |
457 | ops[0].extent.truncate_seq = truncate_seq; | |
458 | ops[0].extent.truncate_size = truncate_size; | |
68b4476b YS |
459 | |
460 | if (do_sync) { | |
461 | ops[1].op = CEPH_OSD_OP_STARTSYNC; | |
ae7ca4a3 AE |
462 | num_op++; |
463 | } | |
68b4476b | 464 | |
ae7ca4a3 AE |
465 | req = ceph_osdc_alloc_request(osdc, snapc, num_op, use_mempool, |
466 | GFP_NOFS); | |
4ad12621 | 467 | if (!req) |
6816282d | 468 | return ERR_PTR(-ENOMEM); |
d178a9e7 | 469 | req->r_flags = flags; |
3499e8a5 YS |
470 | |
471 | /* calculate max write size */ | |
e75b45cf | 472 | r = calc_layout(vino, layout, off, plen, req, ops); |
6816282d SW |
473 | if (r < 0) |
474 | return ERR_PTR(r); | |
3499e8a5 YS |
475 | req->r_file_layout = *layout; /* keep a copy */ |
476 | ||
9bb0ce2b SW |
477 | /* in case it differs from natural (file) alignment that |
478 | calc_layout filled in for us */ | |
479 | req->r_num_pages = calc_pages_for(page_align, *plen); | |
b7495fc2 SW |
480 | req->r_page_alignment = page_align; |
481 | ||
ae7ca4a3 AE |
482 | ceph_osdc_build_request(req, off, *plen, num_op, ops, |
483 | snapc, vino.snap, mtime); | |
3499e8a5 | 484 | |
f24e9980 SW |
485 | return req; |
486 | } | |
3d14c5d2 | 487 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
488 | |
489 | /* | |
490 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
491 | */ | |
492 | static void __insert_request(struct ceph_osd_client *osdc, | |
493 | struct ceph_osd_request *new) | |
494 | { | |
495 | struct rb_node **p = &osdc->requests.rb_node; | |
496 | struct rb_node *parent = NULL; | |
497 | struct ceph_osd_request *req = NULL; | |
498 | ||
499 | while (*p) { | |
500 | parent = *p; | |
501 | req = rb_entry(parent, struct ceph_osd_request, r_node); | |
502 | if (new->r_tid < req->r_tid) | |
503 | p = &(*p)->rb_left; | |
504 | else if (new->r_tid > req->r_tid) | |
505 | p = &(*p)->rb_right; | |
506 | else | |
507 | BUG(); | |
508 | } | |
509 | ||
510 | rb_link_node(&new->r_node, parent, p); | |
511 | rb_insert_color(&new->r_node, &osdc->requests); | |
512 | } | |
513 | ||
514 | static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, | |
515 | u64 tid) | |
516 | { | |
517 | struct ceph_osd_request *req; | |
518 | struct rb_node *n = osdc->requests.rb_node; | |
519 | ||
520 | while (n) { | |
521 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
522 | if (tid < req->r_tid) | |
523 | n = n->rb_left; | |
524 | else if (tid > req->r_tid) | |
525 | n = n->rb_right; | |
526 | else | |
527 | return req; | |
528 | } | |
529 | return NULL; | |
530 | } | |
531 | ||
532 | static struct ceph_osd_request * | |
533 | __lookup_request_ge(struct ceph_osd_client *osdc, | |
534 | u64 tid) | |
535 | { | |
536 | struct ceph_osd_request *req; | |
537 | struct rb_node *n = osdc->requests.rb_node; | |
538 | ||
539 | while (n) { | |
540 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
541 | if (tid < req->r_tid) { | |
542 | if (!n->rb_left) | |
543 | return req; | |
544 | n = n->rb_left; | |
545 | } else if (tid > req->r_tid) { | |
546 | n = n->rb_right; | |
547 | } else { | |
548 | return req; | |
549 | } | |
550 | } | |
551 | return NULL; | |
552 | } | |
553 | ||
6f6c7006 SW |
554 | /* |
555 | * Resubmit requests pending on the given osd. | |
556 | */ | |
557 | static void __kick_osd_requests(struct ceph_osd_client *osdc, | |
558 | struct ceph_osd *osd) | |
559 | { | |
a40c4f10 | 560 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
561 | int err; |
562 | ||
563 | dout("__kick_osd_requests osd%d\n", osd->o_osd); | |
564 | err = __reset_osd(osdc, osd); | |
685a7555 | 565 | if (err) |
6f6c7006 SW |
566 | return; |
567 | ||
568 | list_for_each_entry(req, &osd->o_requests, r_osd_item) { | |
569 | list_move(&req->r_req_lru_item, &osdc->req_unsent); | |
570 | dout("requeued %p tid %llu osd%d\n", req, req->r_tid, | |
571 | osd->o_osd); | |
a40c4f10 YS |
572 | if (!req->r_linger) |
573 | req->r_flags |= CEPH_OSD_FLAG_RETRY; | |
574 | } | |
575 | ||
576 | list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, | |
577 | r_linger_osd) { | |
77f38e0e SW |
578 | /* |
579 | * reregister request prior to unregistering linger so | |
580 | * that r_osd is preserved. | |
581 | */ | |
582 | BUG_ON(!list_empty(&req->r_req_lru_item)); | |
a40c4f10 | 583 | __register_request(osdc, req); |
77f38e0e SW |
584 | list_add(&req->r_req_lru_item, &osdc->req_unsent); |
585 | list_add(&req->r_osd_item, &req->r_osd->o_requests); | |
586 | __unregister_linger_request(osdc, req); | |
a40c4f10 YS |
587 | dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, |
588 | osd->o_osd); | |
6f6c7006 SW |
589 | } |
590 | } | |
591 | ||
f24e9980 | 592 | /* |
81b024e7 | 593 | * If the osd connection drops, we need to resubmit all requests. |
f24e9980 SW |
594 | */ |
595 | static void osd_reset(struct ceph_connection *con) | |
596 | { | |
597 | struct ceph_osd *osd = con->private; | |
598 | struct ceph_osd_client *osdc; | |
599 | ||
600 | if (!osd) | |
601 | return; | |
602 | dout("osd_reset osd%d\n", osd->o_osd); | |
603 | osdc = osd->o_osdc; | |
f24e9980 | 604 | down_read(&osdc->map_sem); |
83aff95e SW |
605 | mutex_lock(&osdc->request_mutex); |
606 | __kick_osd_requests(osdc, osd); | |
f9d25199 | 607 | __send_queued(osdc); |
83aff95e | 608 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
609 | up_read(&osdc->map_sem); |
610 | } | |
611 | ||
612 | /* | |
613 | * Track open sessions with osds. | |
614 | */ | |
e10006f8 | 615 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
616 | { |
617 | struct ceph_osd *osd; | |
618 | ||
619 | osd = kzalloc(sizeof(*osd), GFP_NOFS); | |
620 | if (!osd) | |
621 | return NULL; | |
622 | ||
623 | atomic_set(&osd->o_ref, 1); | |
624 | osd->o_osdc = osdc; | |
e10006f8 | 625 | osd->o_osd = onum; |
f407731d | 626 | RB_CLEAR_NODE(&osd->o_node); |
f24e9980 | 627 | INIT_LIST_HEAD(&osd->o_requests); |
a40c4f10 | 628 | INIT_LIST_HEAD(&osd->o_linger_requests); |
f5a2041b | 629 | INIT_LIST_HEAD(&osd->o_osd_lru); |
f24e9980 SW |
630 | osd->o_incarnation = 1; |
631 | ||
b7a9e5dd | 632 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 633 | |
422d2cb8 | 634 | INIT_LIST_HEAD(&osd->o_keepalive_item); |
f24e9980 SW |
635 | return osd; |
636 | } | |
637 | ||
638 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
639 | { | |
640 | if (atomic_inc_not_zero(&osd->o_ref)) { | |
641 | dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, | |
642 | atomic_read(&osd->o_ref)); | |
643 | return osd; | |
644 | } else { | |
645 | dout("get_osd %p FAIL\n", osd); | |
646 | return NULL; | |
647 | } | |
648 | } | |
649 | ||
650 | static void put_osd(struct ceph_osd *osd) | |
651 | { | |
652 | dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), | |
653 | atomic_read(&osd->o_ref) - 1); | |
a255651d | 654 | if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { |
79494d1b SW |
655 | struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; |
656 | ||
a255651d | 657 | if (ac->ops && ac->ops->destroy_authorizer) |
6c4a1915 | 658 | ac->ops->destroy_authorizer(ac, osd->o_auth.authorizer); |
f24e9980 | 659 | kfree(osd); |
79494d1b | 660 | } |
f24e9980 SW |
661 | } |
662 | ||
663 | /* | |
664 | * remove an osd from our map | |
665 | */ | |
f5a2041b | 666 | static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 667 | { |
f5a2041b | 668 | dout("__remove_osd %p\n", osd); |
f24e9980 SW |
669 | BUG_ON(!list_empty(&osd->o_requests)); |
670 | rb_erase(&osd->o_node, &osdc->osds); | |
f5a2041b | 671 | list_del_init(&osd->o_osd_lru); |
f24e9980 SW |
672 | ceph_con_close(&osd->o_con); |
673 | put_osd(osd); | |
674 | } | |
675 | ||
aca420bc SW |
676 | static void remove_all_osds(struct ceph_osd_client *osdc) |
677 | { | |
048a9d2d | 678 | dout("%s %p\n", __func__, osdc); |
aca420bc SW |
679 | mutex_lock(&osdc->request_mutex); |
680 | while (!RB_EMPTY_ROOT(&osdc->osds)) { | |
681 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
682 | struct ceph_osd, o_node); | |
683 | __remove_osd(osdc, osd); | |
684 | } | |
685 | mutex_unlock(&osdc->request_mutex); | |
686 | } | |
687 | ||
f5a2041b YS |
688 | static void __move_osd_to_lru(struct ceph_osd_client *osdc, |
689 | struct ceph_osd *osd) | |
690 | { | |
691 | dout("__move_osd_to_lru %p\n", osd); | |
692 | BUG_ON(!list_empty(&osd->o_osd_lru)); | |
693 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); | |
3d14c5d2 | 694 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; |
f5a2041b YS |
695 | } |
696 | ||
697 | static void __remove_osd_from_lru(struct ceph_osd *osd) | |
698 | { | |
699 | dout("__remove_osd_from_lru %p\n", osd); | |
700 | if (!list_empty(&osd->o_osd_lru)) | |
701 | list_del_init(&osd->o_osd_lru); | |
702 | } | |
703 | ||
aca420bc | 704 | static void remove_old_osds(struct ceph_osd_client *osdc) |
f5a2041b YS |
705 | { |
706 | struct ceph_osd *osd, *nosd; | |
707 | ||
708 | dout("__remove_old_osds %p\n", osdc); | |
709 | mutex_lock(&osdc->request_mutex); | |
710 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { | |
aca420bc | 711 | if (time_before(jiffies, osd->lru_ttl)) |
f5a2041b YS |
712 | break; |
713 | __remove_osd(osdc, osd); | |
714 | } | |
715 | mutex_unlock(&osdc->request_mutex); | |
716 | } | |
717 | ||
f24e9980 SW |
718 | /* |
719 | * reset osd connect | |
720 | */ | |
f5a2041b | 721 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 722 | { |
c3acb181 | 723 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 724 | |
f5a2041b | 725 | dout("__reset_osd %p osd%d\n", osd, osd->o_osd); |
a40c4f10 YS |
726 | if (list_empty(&osd->o_requests) && |
727 | list_empty(&osd->o_linger_requests)) { | |
f5a2041b | 728 | __remove_osd(osdc, osd); |
c3acb181 AE |
729 | |
730 | return -ENODEV; | |
731 | } | |
732 | ||
733 | peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; | |
734 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && | |
735 | !ceph_con_opened(&osd->o_con)) { | |
736 | struct ceph_osd_request *req; | |
737 | ||
87b315a5 SW |
738 | dout(" osd addr hasn't changed and connection never opened," |
739 | " letting msgr retry"); | |
740 | /* touch each r_stamp for handle_timeout()'s benfit */ | |
741 | list_for_each_entry(req, &osd->o_requests, r_osd_item) | |
742 | req->r_stamp = jiffies; | |
c3acb181 AE |
743 | |
744 | return -EAGAIN; | |
f24e9980 | 745 | } |
c3acb181 AE |
746 | |
747 | ceph_con_close(&osd->o_con); | |
748 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
749 | osd->o_incarnation++; | |
750 | ||
751 | return 0; | |
f24e9980 SW |
752 | } |
753 | ||
754 | static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) | |
755 | { | |
756 | struct rb_node **p = &osdc->osds.rb_node; | |
757 | struct rb_node *parent = NULL; | |
758 | struct ceph_osd *osd = NULL; | |
759 | ||
aca420bc | 760 | dout("__insert_osd %p osd%d\n", new, new->o_osd); |
f24e9980 SW |
761 | while (*p) { |
762 | parent = *p; | |
763 | osd = rb_entry(parent, struct ceph_osd, o_node); | |
764 | if (new->o_osd < osd->o_osd) | |
765 | p = &(*p)->rb_left; | |
766 | else if (new->o_osd > osd->o_osd) | |
767 | p = &(*p)->rb_right; | |
768 | else | |
769 | BUG(); | |
770 | } | |
771 | ||
772 | rb_link_node(&new->o_node, parent, p); | |
773 | rb_insert_color(&new->o_node, &osdc->osds); | |
774 | } | |
775 | ||
776 | static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) | |
777 | { | |
778 | struct ceph_osd *osd; | |
779 | struct rb_node *n = osdc->osds.rb_node; | |
780 | ||
781 | while (n) { | |
782 | osd = rb_entry(n, struct ceph_osd, o_node); | |
783 | if (o < osd->o_osd) | |
784 | n = n->rb_left; | |
785 | else if (o > osd->o_osd) | |
786 | n = n->rb_right; | |
787 | else | |
788 | return osd; | |
789 | } | |
790 | return NULL; | |
791 | } | |
792 | ||
422d2cb8 YS |
793 | static void __schedule_osd_timeout(struct ceph_osd_client *osdc) |
794 | { | |
795 | schedule_delayed_work(&osdc->timeout_work, | |
3d14c5d2 | 796 | osdc->client->options->osd_keepalive_timeout * HZ); |
422d2cb8 YS |
797 | } |
798 | ||
799 | static void __cancel_osd_timeout(struct ceph_osd_client *osdc) | |
800 | { | |
801 | cancel_delayed_work(&osdc->timeout_work); | |
802 | } | |
f24e9980 SW |
803 | |
804 | /* | |
805 | * Register request, assign tid. If this is the first request, set up | |
806 | * the timeout event. | |
807 | */ | |
a40c4f10 YS |
808 | static void __register_request(struct ceph_osd_client *osdc, |
809 | struct ceph_osd_request *req) | |
f24e9980 | 810 | { |
f24e9980 | 811 | req->r_tid = ++osdc->last_tid; |
6df058c0 | 812 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); |
77f38e0e | 813 | dout("__register_request %p tid %lld\n", req, req->r_tid); |
f24e9980 SW |
814 | __insert_request(osdc, req); |
815 | ceph_osdc_get_request(req); | |
816 | osdc->num_requests++; | |
f24e9980 | 817 | if (osdc->num_requests == 1) { |
422d2cb8 YS |
818 | dout(" first request, scheduling timeout\n"); |
819 | __schedule_osd_timeout(osdc); | |
f24e9980 | 820 | } |
a40c4f10 YS |
821 | } |
822 | ||
823 | static void register_request(struct ceph_osd_client *osdc, | |
824 | struct ceph_osd_request *req) | |
825 | { | |
826 | mutex_lock(&osdc->request_mutex); | |
827 | __register_request(osdc, req); | |
f24e9980 SW |
828 | mutex_unlock(&osdc->request_mutex); |
829 | } | |
830 | ||
831 | /* | |
832 | * called under osdc->request_mutex | |
833 | */ | |
834 | static void __unregister_request(struct ceph_osd_client *osdc, | |
835 | struct ceph_osd_request *req) | |
836 | { | |
35f9f8a0 SW |
837 | if (RB_EMPTY_NODE(&req->r_node)) { |
838 | dout("__unregister_request %p tid %lld not registered\n", | |
839 | req, req->r_tid); | |
840 | return; | |
841 | } | |
842 | ||
f24e9980 SW |
843 | dout("__unregister_request %p tid %lld\n", req, req->r_tid); |
844 | rb_erase(&req->r_node, &osdc->requests); | |
845 | osdc->num_requests--; | |
846 | ||
0ba6478d SW |
847 | if (req->r_osd) { |
848 | /* make sure the original request isn't in flight. */ | |
6740a845 | 849 | ceph_msg_revoke(req->r_request); |
0ba6478d SW |
850 | |
851 | list_del_init(&req->r_osd_item); | |
a40c4f10 YS |
852 | if (list_empty(&req->r_osd->o_requests) && |
853 | list_empty(&req->r_osd->o_linger_requests)) { | |
854 | dout("moving osd to %p lru\n", req->r_osd); | |
f5a2041b | 855 | __move_osd_to_lru(osdc, req->r_osd); |
a40c4f10 | 856 | } |
fbdb9190 | 857 | if (list_empty(&req->r_linger_item)) |
a40c4f10 | 858 | req->r_osd = NULL; |
0ba6478d | 859 | } |
f24e9980 | 860 | |
7d5f2481 | 861 | list_del_init(&req->r_req_lru_item); |
f24e9980 SW |
862 | ceph_osdc_put_request(req); |
863 | ||
422d2cb8 YS |
864 | if (osdc->num_requests == 0) { |
865 | dout(" no requests, canceling timeout\n"); | |
866 | __cancel_osd_timeout(osdc); | |
f24e9980 SW |
867 | } |
868 | } | |
869 | ||
870 | /* | |
871 | * Cancel a previously queued request message | |
872 | */ | |
873 | static void __cancel_request(struct ceph_osd_request *req) | |
874 | { | |
6bc18876 | 875 | if (req->r_sent && req->r_osd) { |
6740a845 | 876 | ceph_msg_revoke(req->r_request); |
f24e9980 SW |
877 | req->r_sent = 0; |
878 | } | |
879 | } | |
880 | ||
a40c4f10 YS |
881 | static void __register_linger_request(struct ceph_osd_client *osdc, |
882 | struct ceph_osd_request *req) | |
883 | { | |
884 | dout("__register_linger_request %p\n", req); | |
885 | list_add_tail(&req->r_linger_item, &osdc->req_linger); | |
6194ea89 SW |
886 | if (req->r_osd) |
887 | list_add_tail(&req->r_linger_osd, | |
888 | &req->r_osd->o_linger_requests); | |
a40c4f10 YS |
889 | } |
890 | ||
891 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
892 | struct ceph_osd_request *req) | |
893 | { | |
894 | dout("__unregister_linger_request %p\n", req); | |
61c74035 | 895 | list_del_init(&req->r_linger_item); |
a40c4f10 | 896 | if (req->r_osd) { |
a40c4f10 YS |
897 | list_del_init(&req->r_linger_osd); |
898 | ||
899 | if (list_empty(&req->r_osd->o_requests) && | |
900 | list_empty(&req->r_osd->o_linger_requests)) { | |
901 | dout("moving osd to %p lru\n", req->r_osd); | |
902 | __move_osd_to_lru(osdc, req->r_osd); | |
903 | } | |
fbdb9190 SW |
904 | if (list_empty(&req->r_osd_item)) |
905 | req->r_osd = NULL; | |
a40c4f10 YS |
906 | } |
907 | } | |
908 | ||
909 | void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, | |
910 | struct ceph_osd_request *req) | |
911 | { | |
912 | mutex_lock(&osdc->request_mutex); | |
913 | if (req->r_linger) { | |
914 | __unregister_linger_request(osdc, req); | |
915 | ceph_osdc_put_request(req); | |
916 | } | |
917 | mutex_unlock(&osdc->request_mutex); | |
918 | } | |
919 | EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); | |
920 | ||
921 | void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, | |
922 | struct ceph_osd_request *req) | |
923 | { | |
924 | if (!req->r_linger) { | |
925 | dout("set_request_linger %p\n", req); | |
926 | req->r_linger = 1; | |
927 | /* | |
928 | * caller is now responsible for calling | |
929 | * unregister_linger_request | |
930 | */ | |
931 | ceph_osdc_get_request(req); | |
932 | } | |
933 | } | |
934 | EXPORT_SYMBOL(ceph_osdc_set_request_linger); | |
935 | ||
f24e9980 SW |
936 | /* |
937 | * Pick an osd (the first 'up' osd in the pg), allocate the osd struct | |
938 | * (as needed), and set the request r_osd appropriately. If there is | |
25985edc | 939 | * no up osd, set r_osd to NULL. Move the request to the appropriate list |
6f6c7006 | 940 | * (unsent, homeless) or leave on in-flight lru. |
f24e9980 SW |
941 | * |
942 | * Return 0 if unchanged, 1 if changed, or negative on error. | |
943 | * | |
944 | * Caller should hold map_sem for read and request_mutex. | |
945 | */ | |
6f6c7006 | 946 | static int __map_request(struct ceph_osd_client *osdc, |
38d6453c | 947 | struct ceph_osd_request *req, int force_resend) |
f24e9980 | 948 | { |
5b191d99 | 949 | struct ceph_pg pgid; |
d85b7056 SW |
950 | int acting[CEPH_PG_MAX_SIZE]; |
951 | int o = -1, num = 0; | |
f24e9980 | 952 | int err; |
f24e9980 | 953 | |
6f6c7006 | 954 | dout("map_request %p tid %lld\n", req, req->r_tid); |
2169aea6 | 955 | err = ceph_calc_object_layout(&pgid, req->r_oid, |
f24e9980 | 956 | &req->r_file_layout, osdc->osdmap); |
6f6c7006 SW |
957 | if (err) { |
958 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f24e9980 | 959 | return err; |
6f6c7006 | 960 | } |
7740a42f SW |
961 | req->r_pgid = pgid; |
962 | ||
d85b7056 SW |
963 | err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); |
964 | if (err > 0) { | |
965 | o = acting[0]; | |
966 | num = err; | |
967 | } | |
f24e9980 | 968 | |
38d6453c SW |
969 | if ((!force_resend && |
970 | req->r_osd && req->r_osd->o_osd == o && | |
d85b7056 SW |
971 | req->r_sent >= req->r_osd->o_incarnation && |
972 | req->r_num_pg_osds == num && | |
973 | memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || | |
f24e9980 SW |
974 | (req->r_osd == NULL && o == -1)) |
975 | return 0; /* no change */ | |
976 | ||
5b191d99 SW |
977 | dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", |
978 | req->r_tid, pgid.pool, pgid.seed, o, | |
f24e9980 SW |
979 | req->r_osd ? req->r_osd->o_osd : -1); |
980 | ||
d85b7056 SW |
981 | /* record full pg acting set */ |
982 | memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); | |
983 | req->r_num_pg_osds = num; | |
984 | ||
f24e9980 SW |
985 | if (req->r_osd) { |
986 | __cancel_request(req); | |
987 | list_del_init(&req->r_osd_item); | |
f24e9980 SW |
988 | req->r_osd = NULL; |
989 | } | |
990 | ||
991 | req->r_osd = __lookup_osd(osdc, o); | |
992 | if (!req->r_osd && o >= 0) { | |
c99eb1c7 | 993 | err = -ENOMEM; |
e10006f8 | 994 | req->r_osd = create_osd(osdc, o); |
6f6c7006 SW |
995 | if (!req->r_osd) { |
996 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
c99eb1c7 | 997 | goto out; |
6f6c7006 | 998 | } |
f24e9980 | 999 | |
6f6c7006 | 1000 | dout("map_request osd %p is osd%d\n", req->r_osd, o); |
f24e9980 SW |
1001 | __insert_osd(osdc, req->r_osd); |
1002 | ||
b7a9e5dd SW |
1003 | ceph_con_open(&req->r_osd->o_con, |
1004 | CEPH_ENTITY_TYPE_OSD, o, | |
1005 | &osdc->osdmap->osd_addr[o]); | |
f24e9980 SW |
1006 | } |
1007 | ||
f5a2041b YS |
1008 | if (req->r_osd) { |
1009 | __remove_osd_from_lru(req->r_osd); | |
f24e9980 | 1010 | list_add(&req->r_osd_item, &req->r_osd->o_requests); |
6f6c7006 SW |
1011 | list_move(&req->r_req_lru_item, &osdc->req_unsent); |
1012 | } else { | |
1013 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f5a2041b | 1014 | } |
d85b7056 | 1015 | err = 1; /* osd or pg changed */ |
f24e9980 SW |
1016 | |
1017 | out: | |
f24e9980 SW |
1018 | return err; |
1019 | } | |
1020 | ||
1021 | /* | |
1022 | * caller should hold map_sem (for read) and request_mutex | |
1023 | */ | |
56e925b6 SW |
1024 | static void __send_request(struct ceph_osd_client *osdc, |
1025 | struct ceph_osd_request *req) | |
f24e9980 | 1026 | { |
1b83bef2 | 1027 | void *p; |
f24e9980 | 1028 | |
1b83bef2 SW |
1029 | dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", |
1030 | req, req->r_tid, req->r_osd->o_osd, req->r_flags, | |
1031 | (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); | |
1032 | ||
1033 | /* fill in message content that changes each time we send it */ | |
1034 | put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); | |
1035 | put_unaligned_le32(req->r_flags, req->r_request_flags); | |
1036 | put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); | |
1037 | p = req->r_request_pgid; | |
1038 | ceph_encode_64(&p, req->r_pgid.pool); | |
1039 | ceph_encode_32(&p, req->r_pgid.seed); | |
1040 | put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ | |
1041 | memcpy(req->r_request_reassert_version, &req->r_reassert_version, | |
1042 | sizeof(req->r_reassert_version)); | |
2169aea6 | 1043 | |
3dd72fc0 | 1044 | req->r_stamp = jiffies; |
07a27e22 | 1045 | list_move_tail(&req->r_req_lru_item, &osdc->req_lru); |
f24e9980 SW |
1046 | |
1047 | ceph_msg_get(req->r_request); /* send consumes a ref */ | |
1048 | ceph_con_send(&req->r_osd->o_con, req->r_request); | |
1049 | req->r_sent = req->r_osd->o_incarnation; | |
f24e9980 SW |
1050 | } |
1051 | ||
6f6c7006 SW |
1052 | /* |
1053 | * Send any requests in the queue (req_unsent). | |
1054 | */ | |
f9d25199 | 1055 | static void __send_queued(struct ceph_osd_client *osdc) |
6f6c7006 SW |
1056 | { |
1057 | struct ceph_osd_request *req, *tmp; | |
1058 | ||
f9d25199 AE |
1059 | dout("__send_queued\n"); |
1060 | list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) | |
6f6c7006 | 1061 | __send_request(osdc, req); |
6f6c7006 SW |
1062 | } |
1063 | ||
f24e9980 SW |
1064 | /* |
1065 | * Timeout callback, called every N seconds when 1 or more osd | |
1066 | * requests has been active for more than N seconds. When this | |
1067 | * happens, we ping all OSDs with requests who have timed out to | |
1068 | * ensure any communications channel reset is detected. Reset the | |
1069 | * request timeouts another N seconds in the future as we go. | |
1070 | * Reschedule the timeout event another N seconds in future (unless | |
1071 | * there are no open requests). | |
1072 | */ | |
1073 | static void handle_timeout(struct work_struct *work) | |
1074 | { | |
1075 | struct ceph_osd_client *osdc = | |
1076 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
83aff95e | 1077 | struct ceph_osd_request *req; |
f24e9980 | 1078 | struct ceph_osd *osd; |
422d2cb8 | 1079 | unsigned long keepalive = |
3d14c5d2 | 1080 | osdc->client->options->osd_keepalive_timeout * HZ; |
422d2cb8 | 1081 | struct list_head slow_osds; |
f24e9980 SW |
1082 | dout("timeout\n"); |
1083 | down_read(&osdc->map_sem); | |
1084 | ||
1085 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1086 | ||
1087 | mutex_lock(&osdc->request_mutex); | |
f24e9980 | 1088 | |
422d2cb8 YS |
1089 | /* |
1090 | * ping osds that are a bit slow. this ensures that if there | |
1091 | * is a break in the TCP connection we will notice, and reopen | |
1092 | * a connection with that osd (from the fault callback). | |
1093 | */ | |
1094 | INIT_LIST_HEAD(&slow_osds); | |
1095 | list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { | |
3dd72fc0 | 1096 | if (time_before(jiffies, req->r_stamp + keepalive)) |
422d2cb8 YS |
1097 | break; |
1098 | ||
1099 | osd = req->r_osd; | |
1100 | BUG_ON(!osd); | |
1101 | dout(" tid %llu is slow, will send keepalive on osd%d\n", | |
f24e9980 | 1102 | req->r_tid, osd->o_osd); |
422d2cb8 YS |
1103 | list_move_tail(&osd->o_keepalive_item, &slow_osds); |
1104 | } | |
1105 | while (!list_empty(&slow_osds)) { | |
1106 | osd = list_entry(slow_osds.next, struct ceph_osd, | |
1107 | o_keepalive_item); | |
1108 | list_del_init(&osd->o_keepalive_item); | |
f24e9980 SW |
1109 | ceph_con_keepalive(&osd->o_con); |
1110 | } | |
1111 | ||
422d2cb8 | 1112 | __schedule_osd_timeout(osdc); |
f9d25199 | 1113 | __send_queued(osdc); |
f24e9980 | 1114 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1115 | up_read(&osdc->map_sem); |
1116 | } | |
1117 | ||
f5a2041b YS |
1118 | static void handle_osds_timeout(struct work_struct *work) |
1119 | { | |
1120 | struct ceph_osd_client *osdc = | |
1121 | container_of(work, struct ceph_osd_client, | |
1122 | osds_timeout_work.work); | |
1123 | unsigned long delay = | |
3d14c5d2 | 1124 | osdc->client->options->osd_idle_ttl * HZ >> 2; |
f5a2041b YS |
1125 | |
1126 | dout("osds timeout\n"); | |
1127 | down_read(&osdc->map_sem); | |
aca420bc | 1128 | remove_old_osds(osdc); |
f5a2041b YS |
1129 | up_read(&osdc->map_sem); |
1130 | ||
1131 | schedule_delayed_work(&osdc->osds_timeout_work, | |
1132 | round_jiffies_relative(delay)); | |
1133 | } | |
1134 | ||
25845472 SW |
1135 | static void complete_request(struct ceph_osd_request *req) |
1136 | { | |
1137 | if (req->r_safe_callback) | |
1138 | req->r_safe_callback(req, NULL); | |
1139 | complete_all(&req->r_safe_completion); /* fsync waiter */ | |
1140 | } | |
1141 | ||
1b83bef2 SW |
1142 | static int __decode_pgid(void **p, void *end, struct ceph_pg *pgid) |
1143 | { | |
1144 | __u8 v; | |
1145 | ||
1146 | ceph_decode_need(p, end, 1 + 8 + 4 + 4, bad); | |
1147 | v = ceph_decode_8(p); | |
1148 | if (v > 1) { | |
1149 | pr_warning("do not understand pg encoding %d > 1", v); | |
1150 | return -EINVAL; | |
1151 | } | |
1152 | pgid->pool = ceph_decode_64(p); | |
1153 | pgid->seed = ceph_decode_32(p); | |
1154 | *p += 4; | |
1155 | return 0; | |
1156 | ||
1157 | bad: | |
1158 | pr_warning("incomplete pg encoding"); | |
1159 | return -EINVAL; | |
1160 | } | |
1161 | ||
f24e9980 SW |
1162 | /* |
1163 | * handle osd op reply. either call the callback if it is specified, | |
1164 | * or do the completion to wake up the waiting thread. | |
1165 | */ | |
350b1c32 SW |
1166 | static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, |
1167 | struct ceph_connection *con) | |
f24e9980 | 1168 | { |
1b83bef2 | 1169 | void *p, *end; |
f24e9980 SW |
1170 | struct ceph_osd_request *req; |
1171 | u64 tid; | |
1b83bef2 SW |
1172 | int object_len; |
1173 | int numops, payload_len, flags; | |
0ceed5db | 1174 | s32 result; |
1b83bef2 SW |
1175 | s32 retry_attempt; |
1176 | struct ceph_pg pg; | |
1177 | int err; | |
1178 | u32 reassert_epoch; | |
1179 | u64 reassert_version; | |
1180 | u32 osdmap_epoch; | |
1181 | int i; | |
f24e9980 | 1182 | |
6df058c0 | 1183 | tid = le64_to_cpu(msg->hdr.tid); |
1b83bef2 SW |
1184 | dout("handle_reply %p tid %llu\n", msg, tid); |
1185 | ||
1186 | p = msg->front.iov_base; | |
1187 | end = p + msg->front.iov_len; | |
1188 | ||
1189 | ceph_decode_need(&p, end, 4, bad); | |
1190 | object_len = ceph_decode_32(&p); | |
1191 | ceph_decode_need(&p, end, object_len, bad); | |
1192 | p += object_len; | |
1193 | ||
1194 | err = __decode_pgid(&p, end, &pg); | |
1195 | if (err) | |
f24e9980 | 1196 | goto bad; |
1b83bef2 SW |
1197 | |
1198 | ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); | |
1199 | flags = ceph_decode_64(&p); | |
1200 | result = ceph_decode_32(&p); | |
1201 | reassert_epoch = ceph_decode_32(&p); | |
1202 | reassert_version = ceph_decode_64(&p); | |
1203 | osdmap_epoch = ceph_decode_32(&p); | |
1204 | ||
f24e9980 SW |
1205 | /* lookup */ |
1206 | mutex_lock(&osdc->request_mutex); | |
1207 | req = __lookup_request(osdc, tid); | |
1208 | if (req == NULL) { | |
1209 | dout("handle_reply tid %llu dne\n", tid); | |
1210 | mutex_unlock(&osdc->request_mutex); | |
1211 | return; | |
1212 | } | |
1213 | ceph_osdc_get_request(req); | |
1b83bef2 SW |
1214 | |
1215 | dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, | |
1216 | req, result); | |
1217 | ||
1218 | ceph_decode_need(&p, end, 4, bad); | |
1219 | numops = ceph_decode_32(&p); | |
1220 | if (numops > CEPH_OSD_MAX_OP) | |
1221 | goto bad_put; | |
1222 | if (numops != req->r_num_ops) | |
1223 | goto bad_put; | |
1224 | payload_len = 0; | |
1225 | ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); | |
1226 | for (i = 0; i < numops; i++) { | |
1227 | struct ceph_osd_op *op = p; | |
1228 | int len; | |
1229 | ||
1230 | len = le32_to_cpu(op->payload_len); | |
1231 | req->r_reply_op_len[i] = len; | |
1232 | dout(" op %d has %d bytes\n", i, len); | |
1233 | payload_len += len; | |
1234 | p += sizeof(*op); | |
1235 | } | |
1236 | if (payload_len != le32_to_cpu(msg->hdr.data_len)) { | |
1237 | pr_warning("sum of op payload lens %d != data_len %d", | |
1238 | payload_len, le32_to_cpu(msg->hdr.data_len)); | |
1239 | goto bad_put; | |
1240 | } | |
1241 | ||
1242 | ceph_decode_need(&p, end, 4 + numops * 4, bad); | |
1243 | retry_attempt = ceph_decode_32(&p); | |
1244 | for (i = 0; i < numops; i++) | |
1245 | req->r_reply_op_result[i] = ceph_decode_32(&p); | |
f24e9980 | 1246 | |
350b1c32 | 1247 | /* |
0d59ab81 | 1248 | * if this connection filled our message, drop our reference now, to |
350b1c32 SW |
1249 | * avoid a (safe but slower) revoke later. |
1250 | */ | |
0d59ab81 | 1251 | if (req->r_con_filling_msg == con && req->r_reply == msg) { |
c16e7869 | 1252 | dout(" dropping con_filling_msg ref %p\n", con); |
0d59ab81 | 1253 | req->r_con_filling_msg = NULL; |
0d47766f | 1254 | con->ops->put(con); |
350b1c32 SW |
1255 | } |
1256 | ||
f24e9980 | 1257 | if (!req->r_got_reply) { |
95c96174 | 1258 | unsigned int bytes; |
f24e9980 | 1259 | |
1b83bef2 | 1260 | req->r_result = result; |
f24e9980 SW |
1261 | bytes = le32_to_cpu(msg->hdr.data_len); |
1262 | dout("handle_reply result %d bytes %d\n", req->r_result, | |
1263 | bytes); | |
1264 | if (req->r_result == 0) | |
1265 | req->r_result = bytes; | |
1266 | ||
1267 | /* in case this is a write and we need to replay, */ | |
1b83bef2 SW |
1268 | req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); |
1269 | req->r_reassert_version.version = cpu_to_le64(reassert_version); | |
f24e9980 SW |
1270 | |
1271 | req->r_got_reply = 1; | |
1272 | } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { | |
1273 | dout("handle_reply tid %llu dup ack\n", tid); | |
34b43a56 | 1274 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1275 | goto done; |
1276 | } | |
1277 | ||
1278 | dout("handle_reply tid %llu flags %d\n", tid, flags); | |
1279 | ||
a40c4f10 YS |
1280 | if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) |
1281 | __register_linger_request(osdc, req); | |
1282 | ||
f24e9980 | 1283 | /* either this is a read, or we got the safe response */ |
0ceed5db SW |
1284 | if (result < 0 || |
1285 | (flags & CEPH_OSD_FLAG_ONDISK) || | |
f24e9980 SW |
1286 | ((flags & CEPH_OSD_FLAG_WRITE) == 0)) |
1287 | __unregister_request(osdc, req); | |
1288 | ||
1289 | mutex_unlock(&osdc->request_mutex); | |
1290 | ||
1291 | if (req->r_callback) | |
1292 | req->r_callback(req, msg); | |
1293 | else | |
03066f23 | 1294 | complete_all(&req->r_completion); |
f24e9980 | 1295 | |
25845472 SW |
1296 | if (flags & CEPH_OSD_FLAG_ONDISK) |
1297 | complete_request(req); | |
f24e9980 SW |
1298 | |
1299 | done: | |
a40c4f10 | 1300 | dout("req=%p req->r_linger=%d\n", req, req->r_linger); |
f24e9980 SW |
1301 | ceph_osdc_put_request(req); |
1302 | return; | |
1303 | ||
1b83bef2 SW |
1304 | bad_put: |
1305 | ceph_osdc_put_request(req); | |
f24e9980 | 1306 | bad: |
1b83bef2 SW |
1307 | pr_err("corrupt osd_op_reply got %d %d\n", |
1308 | (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); | |
9ec7cab1 | 1309 | ceph_msg_dump(msg); |
f24e9980 SW |
1310 | } |
1311 | ||
6f6c7006 | 1312 | static void reset_changed_osds(struct ceph_osd_client *osdc) |
f24e9980 | 1313 | { |
f24e9980 | 1314 | struct rb_node *p, *n; |
f24e9980 | 1315 | |
6f6c7006 SW |
1316 | for (p = rb_first(&osdc->osds); p; p = n) { |
1317 | struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); | |
f24e9980 | 1318 | |
6f6c7006 SW |
1319 | n = rb_next(p); |
1320 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
1321 | memcmp(&osd->o_con.peer_addr, | |
1322 | ceph_osd_addr(osdc->osdmap, | |
1323 | osd->o_osd), | |
1324 | sizeof(struct ceph_entity_addr)) != 0) | |
1325 | __reset_osd(osdc, osd); | |
f24e9980 | 1326 | } |
422d2cb8 YS |
1327 | } |
1328 | ||
1329 | /* | |
6f6c7006 SW |
1330 | * Requeue requests whose mapping to an OSD has changed. If requests map to |
1331 | * no osd, request a new map. | |
422d2cb8 | 1332 | * |
e6d50f67 | 1333 | * Caller should hold map_sem for read. |
422d2cb8 | 1334 | */ |
38d6453c | 1335 | static void kick_requests(struct ceph_osd_client *osdc, int force_resend) |
422d2cb8 | 1336 | { |
a40c4f10 | 1337 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
1338 | struct rb_node *p; |
1339 | int needmap = 0; | |
1340 | int err; | |
422d2cb8 | 1341 | |
38d6453c | 1342 | dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); |
422d2cb8 | 1343 | mutex_lock(&osdc->request_mutex); |
6194ea89 | 1344 | for (p = rb_first(&osdc->requests); p; ) { |
6f6c7006 | 1345 | req = rb_entry(p, struct ceph_osd_request, r_node); |
6194ea89 | 1346 | p = rb_next(p); |
ab60b16d AE |
1347 | |
1348 | /* | |
1349 | * For linger requests that have not yet been | |
1350 | * registered, move them to the linger list; they'll | |
1351 | * be sent to the osd in the loop below. Unregister | |
1352 | * the request before re-registering it as a linger | |
1353 | * request to ensure the __map_request() below | |
1354 | * will decide it needs to be sent. | |
1355 | */ | |
1356 | if (req->r_linger && list_empty(&req->r_linger_item)) { | |
1357 | dout("%p tid %llu restart on osd%d\n", | |
1358 | req, req->r_tid, | |
1359 | req->r_osd ? req->r_osd->o_osd : -1); | |
1360 | __unregister_request(osdc, req); | |
1361 | __register_linger_request(osdc, req); | |
1362 | continue; | |
1363 | } | |
1364 | ||
38d6453c | 1365 | err = __map_request(osdc, req, force_resend); |
6f6c7006 SW |
1366 | if (err < 0) |
1367 | continue; /* error */ | |
1368 | if (req->r_osd == NULL) { | |
1369 | dout("%p tid %llu maps to no osd\n", req, req->r_tid); | |
1370 | needmap++; /* request a newer map */ | |
1371 | } else if (err > 0) { | |
6194ea89 SW |
1372 | if (!req->r_linger) { |
1373 | dout("%p tid %llu requeued on osd%d\n", req, | |
1374 | req->r_tid, | |
1375 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1376 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
6194ea89 SW |
1377 | } |
1378 | } | |
a40c4f10 YS |
1379 | } |
1380 | ||
1381 | list_for_each_entry_safe(req, nreq, &osdc->req_linger, | |
1382 | r_linger_item) { | |
1383 | dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); | |
1384 | ||
38d6453c | 1385 | err = __map_request(osdc, req, force_resend); |
ab60b16d | 1386 | dout("__map_request returned %d\n", err); |
a40c4f10 YS |
1387 | if (err == 0) |
1388 | continue; /* no change and no osd was specified */ | |
1389 | if (err < 0) | |
1390 | continue; /* hrm! */ | |
1391 | if (req->r_osd == NULL) { | |
1392 | dout("tid %llu maps to no valid osd\n", req->r_tid); | |
1393 | needmap++; /* request a newer map */ | |
1394 | continue; | |
6f6c7006 | 1395 | } |
a40c4f10 YS |
1396 | |
1397 | dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, | |
1398 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1399 | __register_request(osdc, req); |
c89ce05e | 1400 | __unregister_linger_request(osdc, req); |
6f6c7006 | 1401 | } |
f24e9980 SW |
1402 | mutex_unlock(&osdc->request_mutex); |
1403 | ||
1404 | if (needmap) { | |
1405 | dout("%d requests for down osds, need new map\n", needmap); | |
1406 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1407 | } | |
e6d50f67 | 1408 | reset_changed_osds(osdc); |
422d2cb8 | 1409 | } |
6f6c7006 SW |
1410 | |
1411 | ||
f24e9980 SW |
1412 | /* |
1413 | * Process updated osd map. | |
1414 | * | |
1415 | * The message contains any number of incremental and full maps, normally | |
1416 | * indicating some sort of topology change in the cluster. Kick requests | |
1417 | * off to different OSDs as needed. | |
1418 | */ | |
1419 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
1420 | { | |
1421 | void *p, *end, *next; | |
1422 | u32 nr_maps, maplen; | |
1423 | u32 epoch; | |
1424 | struct ceph_osdmap *newmap = NULL, *oldmap; | |
1425 | int err; | |
1426 | struct ceph_fsid fsid; | |
1427 | ||
1428 | dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); | |
1429 | p = msg->front.iov_base; | |
1430 | end = p + msg->front.iov_len; | |
1431 | ||
1432 | /* verify fsid */ | |
1433 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
1434 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d SW |
1435 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
1436 | return; | |
f24e9980 SW |
1437 | |
1438 | down_write(&osdc->map_sem); | |
1439 | ||
1440 | /* incremental maps */ | |
1441 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1442 | dout(" %d inc maps\n", nr_maps); | |
1443 | while (nr_maps > 0) { | |
1444 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1445 | epoch = ceph_decode_32(&p); |
1446 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1447 | ceph_decode_need(&p, end, maplen, bad); |
1448 | next = p + maplen; | |
1449 | if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { | |
1450 | dout("applying incremental map %u len %d\n", | |
1451 | epoch, maplen); | |
1452 | newmap = osdmap_apply_incremental(&p, next, | |
1453 | osdc->osdmap, | |
15d9882c | 1454 | &osdc->client->msgr); |
f24e9980 SW |
1455 | if (IS_ERR(newmap)) { |
1456 | err = PTR_ERR(newmap); | |
1457 | goto bad; | |
1458 | } | |
30dc6381 | 1459 | BUG_ON(!newmap); |
f24e9980 SW |
1460 | if (newmap != osdc->osdmap) { |
1461 | ceph_osdmap_destroy(osdc->osdmap); | |
1462 | osdc->osdmap = newmap; | |
1463 | } | |
38d6453c | 1464 | kick_requests(osdc, 0); |
f24e9980 SW |
1465 | } else { |
1466 | dout("ignoring incremental map %u len %d\n", | |
1467 | epoch, maplen); | |
1468 | } | |
1469 | p = next; | |
1470 | nr_maps--; | |
1471 | } | |
1472 | if (newmap) | |
1473 | goto done; | |
1474 | ||
1475 | /* full maps */ | |
1476 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1477 | dout(" %d full maps\n", nr_maps); | |
1478 | while (nr_maps) { | |
1479 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1480 | epoch = ceph_decode_32(&p); |
1481 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1482 | ceph_decode_need(&p, end, maplen, bad); |
1483 | if (nr_maps > 1) { | |
1484 | dout("skipping non-latest full map %u len %d\n", | |
1485 | epoch, maplen); | |
1486 | } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { | |
1487 | dout("skipping full map %u len %d, " | |
1488 | "older than our %u\n", epoch, maplen, | |
1489 | osdc->osdmap->epoch); | |
1490 | } else { | |
38d6453c SW |
1491 | int skipped_map = 0; |
1492 | ||
f24e9980 SW |
1493 | dout("taking full map %u len %d\n", epoch, maplen); |
1494 | newmap = osdmap_decode(&p, p+maplen); | |
1495 | if (IS_ERR(newmap)) { | |
1496 | err = PTR_ERR(newmap); | |
1497 | goto bad; | |
1498 | } | |
30dc6381 | 1499 | BUG_ON(!newmap); |
f24e9980 SW |
1500 | oldmap = osdc->osdmap; |
1501 | osdc->osdmap = newmap; | |
38d6453c SW |
1502 | if (oldmap) { |
1503 | if (oldmap->epoch + 1 < newmap->epoch) | |
1504 | skipped_map = 1; | |
f24e9980 | 1505 | ceph_osdmap_destroy(oldmap); |
38d6453c SW |
1506 | } |
1507 | kick_requests(osdc, skipped_map); | |
f24e9980 SW |
1508 | } |
1509 | p += maplen; | |
1510 | nr_maps--; | |
1511 | } | |
1512 | ||
1513 | done: | |
1514 | downgrade_write(&osdc->map_sem); | |
1515 | ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); | |
cd634fb6 SW |
1516 | |
1517 | /* | |
1518 | * subscribe to subsequent osdmap updates if full to ensure | |
1519 | * we find out when we are no longer full and stop returning | |
1520 | * ENOSPC. | |
1521 | */ | |
1522 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) | |
1523 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1524 | ||
f9d25199 AE |
1525 | mutex_lock(&osdc->request_mutex); |
1526 | __send_queued(osdc); | |
1527 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 1528 | up_read(&osdc->map_sem); |
03066f23 | 1529 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
1530 | return; |
1531 | ||
1532 | bad: | |
1533 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 1534 | ceph_msg_dump(msg); |
f24e9980 SW |
1535 | up_write(&osdc->map_sem); |
1536 | return; | |
1537 | } | |
1538 | ||
a40c4f10 YS |
1539 | /* |
1540 | * watch/notify callback event infrastructure | |
1541 | * | |
1542 | * These callbacks are used both for watch and notify operations. | |
1543 | */ | |
1544 | static void __release_event(struct kref *kref) | |
1545 | { | |
1546 | struct ceph_osd_event *event = | |
1547 | container_of(kref, struct ceph_osd_event, kref); | |
1548 | ||
1549 | dout("__release_event %p\n", event); | |
1550 | kfree(event); | |
1551 | } | |
1552 | ||
1553 | static void get_event(struct ceph_osd_event *event) | |
1554 | { | |
1555 | kref_get(&event->kref); | |
1556 | } | |
1557 | ||
1558 | void ceph_osdc_put_event(struct ceph_osd_event *event) | |
1559 | { | |
1560 | kref_put(&event->kref, __release_event); | |
1561 | } | |
1562 | EXPORT_SYMBOL(ceph_osdc_put_event); | |
1563 | ||
1564 | static void __insert_event(struct ceph_osd_client *osdc, | |
1565 | struct ceph_osd_event *new) | |
1566 | { | |
1567 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1568 | struct rb_node *parent = NULL; | |
1569 | struct ceph_osd_event *event = NULL; | |
1570 | ||
1571 | while (*p) { | |
1572 | parent = *p; | |
1573 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1574 | if (new->cookie < event->cookie) | |
1575 | p = &(*p)->rb_left; | |
1576 | else if (new->cookie > event->cookie) | |
1577 | p = &(*p)->rb_right; | |
1578 | else | |
1579 | BUG(); | |
1580 | } | |
1581 | ||
1582 | rb_link_node(&new->node, parent, p); | |
1583 | rb_insert_color(&new->node, &osdc->event_tree); | |
1584 | } | |
1585 | ||
1586 | static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, | |
1587 | u64 cookie) | |
1588 | { | |
1589 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1590 | struct rb_node *parent = NULL; | |
1591 | struct ceph_osd_event *event = NULL; | |
1592 | ||
1593 | while (*p) { | |
1594 | parent = *p; | |
1595 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1596 | if (cookie < event->cookie) | |
1597 | p = &(*p)->rb_left; | |
1598 | else if (cookie > event->cookie) | |
1599 | p = &(*p)->rb_right; | |
1600 | else | |
1601 | return event; | |
1602 | } | |
1603 | return NULL; | |
1604 | } | |
1605 | ||
1606 | static void __remove_event(struct ceph_osd_event *event) | |
1607 | { | |
1608 | struct ceph_osd_client *osdc = event->osdc; | |
1609 | ||
1610 | if (!RB_EMPTY_NODE(&event->node)) { | |
1611 | dout("__remove_event removed %p\n", event); | |
1612 | rb_erase(&event->node, &osdc->event_tree); | |
1613 | ceph_osdc_put_event(event); | |
1614 | } else { | |
1615 | dout("__remove_event didn't remove %p\n", event); | |
1616 | } | |
1617 | } | |
1618 | ||
1619 | int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
1620 | void (*event_cb)(u64, u64, u8, void *), | |
3c663bbd | 1621 | void *data, struct ceph_osd_event **pevent) |
a40c4f10 YS |
1622 | { |
1623 | struct ceph_osd_event *event; | |
1624 | ||
1625 | event = kmalloc(sizeof(*event), GFP_NOIO); | |
1626 | if (!event) | |
1627 | return -ENOMEM; | |
1628 | ||
1629 | dout("create_event %p\n", event); | |
1630 | event->cb = event_cb; | |
3c663bbd | 1631 | event->one_shot = 0; |
a40c4f10 YS |
1632 | event->data = data; |
1633 | event->osdc = osdc; | |
1634 | INIT_LIST_HEAD(&event->osd_node); | |
3ee5234d | 1635 | RB_CLEAR_NODE(&event->node); |
a40c4f10 YS |
1636 | kref_init(&event->kref); /* one ref for us */ |
1637 | kref_get(&event->kref); /* one ref for the caller */ | |
a40c4f10 YS |
1638 | |
1639 | spin_lock(&osdc->event_lock); | |
1640 | event->cookie = ++osdc->event_count; | |
1641 | __insert_event(osdc, event); | |
1642 | spin_unlock(&osdc->event_lock); | |
1643 | ||
1644 | *pevent = event; | |
1645 | return 0; | |
1646 | } | |
1647 | EXPORT_SYMBOL(ceph_osdc_create_event); | |
1648 | ||
1649 | void ceph_osdc_cancel_event(struct ceph_osd_event *event) | |
1650 | { | |
1651 | struct ceph_osd_client *osdc = event->osdc; | |
1652 | ||
1653 | dout("cancel_event %p\n", event); | |
1654 | spin_lock(&osdc->event_lock); | |
1655 | __remove_event(event); | |
1656 | spin_unlock(&osdc->event_lock); | |
1657 | ceph_osdc_put_event(event); /* caller's */ | |
1658 | } | |
1659 | EXPORT_SYMBOL(ceph_osdc_cancel_event); | |
1660 | ||
1661 | ||
1662 | static void do_event_work(struct work_struct *work) | |
1663 | { | |
1664 | struct ceph_osd_event_work *event_work = | |
1665 | container_of(work, struct ceph_osd_event_work, work); | |
1666 | struct ceph_osd_event *event = event_work->event; | |
1667 | u64 ver = event_work->ver; | |
1668 | u64 notify_id = event_work->notify_id; | |
1669 | u8 opcode = event_work->opcode; | |
1670 | ||
1671 | dout("do_event_work completing %p\n", event); | |
1672 | event->cb(ver, notify_id, opcode, event->data); | |
a40c4f10 YS |
1673 | dout("do_event_work completed %p\n", event); |
1674 | ceph_osdc_put_event(event); | |
1675 | kfree(event_work); | |
1676 | } | |
1677 | ||
1678 | ||
1679 | /* | |
1680 | * Process osd watch notifications | |
1681 | */ | |
3c663bbd AE |
1682 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
1683 | struct ceph_msg *msg) | |
a40c4f10 YS |
1684 | { |
1685 | void *p, *end; | |
1686 | u8 proto_ver; | |
1687 | u64 cookie, ver, notify_id; | |
1688 | u8 opcode; | |
1689 | struct ceph_osd_event *event; | |
1690 | struct ceph_osd_event_work *event_work; | |
1691 | ||
1692 | p = msg->front.iov_base; | |
1693 | end = p + msg->front.iov_len; | |
1694 | ||
1695 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
1696 | ceph_decode_8_safe(&p, end, opcode, bad); | |
1697 | ceph_decode_64_safe(&p, end, cookie, bad); | |
1698 | ceph_decode_64_safe(&p, end, ver, bad); | |
1699 | ceph_decode_64_safe(&p, end, notify_id, bad); | |
1700 | ||
1701 | spin_lock(&osdc->event_lock); | |
1702 | event = __find_event(osdc, cookie); | |
1703 | if (event) { | |
3c663bbd | 1704 | BUG_ON(event->one_shot); |
a40c4f10 | 1705 | get_event(event); |
a40c4f10 YS |
1706 | } |
1707 | spin_unlock(&osdc->event_lock); | |
1708 | dout("handle_watch_notify cookie %lld ver %lld event %p\n", | |
1709 | cookie, ver, event); | |
1710 | if (event) { | |
1711 | event_work = kmalloc(sizeof(*event_work), GFP_NOIO); | |
a40c4f10 YS |
1712 | if (!event_work) { |
1713 | dout("ERROR: could not allocate event_work\n"); | |
1714 | goto done_err; | |
1715 | } | |
6b0ae409 | 1716 | INIT_WORK(&event_work->work, do_event_work); |
a40c4f10 YS |
1717 | event_work->event = event; |
1718 | event_work->ver = ver; | |
1719 | event_work->notify_id = notify_id; | |
1720 | event_work->opcode = opcode; | |
1721 | if (!queue_work(osdc->notify_wq, &event_work->work)) { | |
1722 | dout("WARNING: failed to queue notify event work\n"); | |
1723 | goto done_err; | |
1724 | } | |
1725 | } | |
1726 | ||
1727 | return; | |
1728 | ||
1729 | done_err: | |
a40c4f10 YS |
1730 | ceph_osdc_put_event(event); |
1731 | return; | |
1732 | ||
1733 | bad: | |
1734 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
1735 | return; | |
1736 | } | |
1737 | ||
f24e9980 SW |
1738 | /* |
1739 | * Register request, send initial attempt. | |
1740 | */ | |
1741 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
1742 | struct ceph_osd_request *req, | |
1743 | bool nofail) | |
1744 | { | |
c1ea8823 | 1745 | int rc = 0; |
f24e9980 SW |
1746 | |
1747 | req->r_request->pages = req->r_pages; | |
1748 | req->r_request->nr_pages = req->r_num_pages; | |
68b4476b YS |
1749 | #ifdef CONFIG_BLOCK |
1750 | req->r_request->bio = req->r_bio; | |
1751 | #endif | |
c885837f | 1752 | req->r_request->trail = &req->r_trail; |
f24e9980 SW |
1753 | |
1754 | register_request(osdc, req); | |
1755 | ||
1756 | down_read(&osdc->map_sem); | |
1757 | mutex_lock(&osdc->request_mutex); | |
c1ea8823 SW |
1758 | /* |
1759 | * a racing kick_requests() may have sent the message for us | |
1760 | * while we dropped request_mutex above, so only send now if | |
1761 | * the request still han't been touched yet. | |
1762 | */ | |
1763 | if (req->r_sent == 0) { | |
38d6453c | 1764 | rc = __map_request(osdc, req, 0); |
9d6fcb08 SW |
1765 | if (rc < 0) { |
1766 | if (nofail) { | |
1767 | dout("osdc_start_request failed map, " | |
1768 | " will retry %lld\n", req->r_tid); | |
1769 | rc = 0; | |
1770 | } | |
234af26f | 1771 | goto out_unlock; |
9d6fcb08 | 1772 | } |
6f6c7006 SW |
1773 | if (req->r_osd == NULL) { |
1774 | dout("send_request %p no up osds in pg\n", req); | |
1775 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1776 | } else { | |
56e925b6 | 1777 | __send_request(osdc, req); |
f24e9980 | 1778 | } |
56e925b6 | 1779 | rc = 0; |
f24e9980 | 1780 | } |
234af26f DC |
1781 | |
1782 | out_unlock: | |
f24e9980 SW |
1783 | mutex_unlock(&osdc->request_mutex); |
1784 | up_read(&osdc->map_sem); | |
1785 | return rc; | |
1786 | } | |
3d14c5d2 | 1787 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 SW |
1788 | |
1789 | /* | |
1790 | * wait for a request to complete | |
1791 | */ | |
1792 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
1793 | struct ceph_osd_request *req) | |
1794 | { | |
1795 | int rc; | |
1796 | ||
1797 | rc = wait_for_completion_interruptible(&req->r_completion); | |
1798 | if (rc < 0) { | |
1799 | mutex_lock(&osdc->request_mutex); | |
1800 | __cancel_request(req); | |
529cfcc4 | 1801 | __unregister_request(osdc, req); |
f24e9980 | 1802 | mutex_unlock(&osdc->request_mutex); |
25845472 | 1803 | complete_request(req); |
529cfcc4 | 1804 | dout("wait_request tid %llu canceled/timed out\n", req->r_tid); |
f24e9980 SW |
1805 | return rc; |
1806 | } | |
1807 | ||
1808 | dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); | |
1809 | return req->r_result; | |
1810 | } | |
3d14c5d2 | 1811 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
1812 | |
1813 | /* | |
1814 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
1815 | */ | |
1816 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
1817 | { | |
1818 | struct ceph_osd_request *req; | |
1819 | u64 last_tid, next_tid = 0; | |
1820 | ||
1821 | mutex_lock(&osdc->request_mutex); | |
1822 | last_tid = osdc->last_tid; | |
1823 | while (1) { | |
1824 | req = __lookup_request_ge(osdc, next_tid); | |
1825 | if (!req) | |
1826 | break; | |
1827 | if (req->r_tid > last_tid) | |
1828 | break; | |
1829 | ||
1830 | next_tid = req->r_tid + 1; | |
1831 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) | |
1832 | continue; | |
1833 | ||
1834 | ceph_osdc_get_request(req); | |
1835 | mutex_unlock(&osdc->request_mutex); | |
1836 | dout("sync waiting on tid %llu (last is %llu)\n", | |
1837 | req->r_tid, last_tid); | |
1838 | wait_for_completion(&req->r_safe_completion); | |
1839 | mutex_lock(&osdc->request_mutex); | |
1840 | ceph_osdc_put_request(req); | |
1841 | } | |
1842 | mutex_unlock(&osdc->request_mutex); | |
1843 | dout("sync done (thru tid %llu)\n", last_tid); | |
1844 | } | |
3d14c5d2 | 1845 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 SW |
1846 | |
1847 | /* | |
1848 | * init, shutdown | |
1849 | */ | |
1850 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
1851 | { | |
1852 | int err; | |
1853 | ||
1854 | dout("init\n"); | |
1855 | osdc->client = client; | |
1856 | osdc->osdmap = NULL; | |
1857 | init_rwsem(&osdc->map_sem); | |
1858 | init_completion(&osdc->map_waiters); | |
1859 | osdc->last_requested_map = 0; | |
1860 | mutex_init(&osdc->request_mutex); | |
f24e9980 SW |
1861 | osdc->last_tid = 0; |
1862 | osdc->osds = RB_ROOT; | |
f5a2041b | 1863 | INIT_LIST_HEAD(&osdc->osd_lru); |
f24e9980 | 1864 | osdc->requests = RB_ROOT; |
422d2cb8 | 1865 | INIT_LIST_HEAD(&osdc->req_lru); |
6f6c7006 SW |
1866 | INIT_LIST_HEAD(&osdc->req_unsent); |
1867 | INIT_LIST_HEAD(&osdc->req_notarget); | |
a40c4f10 | 1868 | INIT_LIST_HEAD(&osdc->req_linger); |
f24e9980 SW |
1869 | osdc->num_requests = 0; |
1870 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); | |
f5a2041b | 1871 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10 YS |
1872 | spin_lock_init(&osdc->event_lock); |
1873 | osdc->event_tree = RB_ROOT; | |
1874 | osdc->event_count = 0; | |
f5a2041b YS |
1875 | |
1876 | schedule_delayed_work(&osdc->osds_timeout_work, | |
3d14c5d2 | 1877 | round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); |
f24e9980 | 1878 | |
5f44f142 | 1879 | err = -ENOMEM; |
f24e9980 SW |
1880 | osdc->req_mempool = mempool_create_kmalloc_pool(10, |
1881 | sizeof(struct ceph_osd_request)); | |
1882 | if (!osdc->req_mempool) | |
5f44f142 | 1883 | goto out; |
f24e9980 | 1884 | |
d50b409f SW |
1885 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
1886 | OSD_OP_FRONT_LEN, 10, true, | |
4f48280e | 1887 | "osd_op"); |
f24e9980 | 1888 | if (err < 0) |
5f44f142 | 1889 | goto out_mempool; |
d50b409f | 1890 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
4f48280e SW |
1891 | OSD_OPREPLY_FRONT_LEN, 10, true, |
1892 | "osd_op_reply"); | |
c16e7869 SW |
1893 | if (err < 0) |
1894 | goto out_msgpool; | |
a40c4f10 YS |
1895 | |
1896 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); | |
1897 | if (IS_ERR(osdc->notify_wq)) { | |
1898 | err = PTR_ERR(osdc->notify_wq); | |
1899 | osdc->notify_wq = NULL; | |
1900 | goto out_msgpool; | |
1901 | } | |
f24e9980 | 1902 | return 0; |
5f44f142 | 1903 | |
c16e7869 SW |
1904 | out_msgpool: |
1905 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
1906 | out_mempool: |
1907 | mempool_destroy(osdc->req_mempool); | |
1908 | out: | |
1909 | return err; | |
f24e9980 SW |
1910 | } |
1911 | ||
1912 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
1913 | { | |
a40c4f10 YS |
1914 | flush_workqueue(osdc->notify_wq); |
1915 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 1916 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 1917 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
f24e9980 SW |
1918 | if (osdc->osdmap) { |
1919 | ceph_osdmap_destroy(osdc->osdmap); | |
1920 | osdc->osdmap = NULL; | |
1921 | } | |
aca420bc | 1922 | remove_all_osds(osdc); |
f24e9980 SW |
1923 | mempool_destroy(osdc->req_mempool); |
1924 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 1925 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
1926 | } |
1927 | ||
1928 | /* | |
1929 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
1930 | * *plen. Return number of bytes read, or error. | |
1931 | */ | |
1932 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
1933 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
1934 | u64 off, u64 *plen, | |
1935 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 1936 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
1937 | { |
1938 | struct ceph_osd_request *req; | |
1939 | int rc = 0; | |
1940 | ||
1941 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
1942 | vino.snap, off, *plen); | |
1943 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, | |
1944 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, | |
1945 | NULL, 0, truncate_seq, truncate_size, NULL, | |
a3bea47e | 1946 | false, page_align); |
6816282d SW |
1947 | if (IS_ERR(req)) |
1948 | return PTR_ERR(req); | |
f24e9980 SW |
1949 | |
1950 | /* it may be a short read due to an object boundary */ | |
1951 | req->r_pages = pages; | |
f24e9980 | 1952 | |
b7495fc2 SW |
1953 | dout("readpages final extent is %llu~%llu (%d pages align %d)\n", |
1954 | off, *plen, req->r_num_pages, page_align); | |
f24e9980 SW |
1955 | |
1956 | rc = ceph_osdc_start_request(osdc, req, false); | |
1957 | if (!rc) | |
1958 | rc = ceph_osdc_wait_request(osdc, req); | |
1959 | ||
1960 | ceph_osdc_put_request(req); | |
1961 | dout("readpages result %d\n", rc); | |
1962 | return rc; | |
1963 | } | |
3d14c5d2 | 1964 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
1965 | |
1966 | /* | |
1967 | * do a synchronous write on N pages | |
1968 | */ | |
1969 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
1970 | struct ceph_file_layout *layout, | |
1971 | struct ceph_snap_context *snapc, | |
1972 | u64 off, u64 len, | |
1973 | u32 truncate_seq, u64 truncate_size, | |
1974 | struct timespec *mtime, | |
24808826 | 1975 | struct page **pages, int num_pages) |
f24e9980 SW |
1976 | { |
1977 | struct ceph_osd_request *req; | |
1978 | int rc = 0; | |
b7495fc2 | 1979 | int page_align = off & ~PAGE_MASK; |
f24e9980 SW |
1980 | |
1981 | BUG_ON(vino.snap != CEPH_NOSNAP); | |
1982 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, | |
1983 | CEPH_OSD_OP_WRITE, | |
24808826 | 1984 | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, |
fbf8685f | 1985 | snapc, 0, |
f24e9980 | 1986 | truncate_seq, truncate_size, mtime, |
a3bea47e | 1987 | true, page_align); |
6816282d SW |
1988 | if (IS_ERR(req)) |
1989 | return PTR_ERR(req); | |
f24e9980 SW |
1990 | |
1991 | /* it may be a short write due to an object boundary */ | |
1992 | req->r_pages = pages; | |
f24e9980 SW |
1993 | dout("writepages %llu~%llu (%d pages)\n", off, len, |
1994 | req->r_num_pages); | |
1995 | ||
87f979d3 | 1996 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
1997 | if (!rc) |
1998 | rc = ceph_osdc_wait_request(osdc, req); | |
1999 | ||
2000 | ceph_osdc_put_request(req); | |
2001 | if (rc == 0) | |
2002 | rc = len; | |
2003 | dout("writepages result %d\n", rc); | |
2004 | return rc; | |
2005 | } | |
3d14c5d2 | 2006 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 SW |
2007 | |
2008 | /* | |
2009 | * handle incoming message | |
2010 | */ | |
2011 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
2012 | { | |
2013 | struct ceph_osd *osd = con->private; | |
32c895e7 | 2014 | struct ceph_osd_client *osdc; |
f24e9980 SW |
2015 | int type = le16_to_cpu(msg->hdr.type); |
2016 | ||
2017 | if (!osd) | |
4a32f93d | 2018 | goto out; |
32c895e7 | 2019 | osdc = osd->o_osdc; |
f24e9980 SW |
2020 | |
2021 | switch (type) { | |
2022 | case CEPH_MSG_OSD_MAP: | |
2023 | ceph_osdc_handle_map(osdc, msg); | |
2024 | break; | |
2025 | case CEPH_MSG_OSD_OPREPLY: | |
350b1c32 | 2026 | handle_reply(osdc, msg, con); |
f24e9980 | 2027 | break; |
a40c4f10 YS |
2028 | case CEPH_MSG_WATCH_NOTIFY: |
2029 | handle_watch_notify(osdc, msg); | |
2030 | break; | |
f24e9980 SW |
2031 | |
2032 | default: | |
2033 | pr_err("received unknown message type %d %s\n", type, | |
2034 | ceph_msg_type_name(type)); | |
2035 | } | |
4a32f93d | 2036 | out: |
f24e9980 SW |
2037 | ceph_msg_put(msg); |
2038 | } | |
2039 | ||
5b3a4db3 | 2040 | /* |
21b667f6 SW |
2041 | * lookup and return message for incoming reply. set up reply message |
2042 | * pages. | |
5b3a4db3 SW |
2043 | */ |
2044 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
2045 | struct ceph_msg_header *hdr, |
2046 | int *skip) | |
f24e9980 SW |
2047 | { |
2048 | struct ceph_osd *osd = con->private; | |
2049 | struct ceph_osd_client *osdc = osd->o_osdc; | |
2450418c | 2050 | struct ceph_msg *m; |
0547a9b3 | 2051 | struct ceph_osd_request *req; |
5b3a4db3 SW |
2052 | int front = le32_to_cpu(hdr->front_len); |
2053 | int data_len = le32_to_cpu(hdr->data_len); | |
0547a9b3 | 2054 | u64 tid; |
f24e9980 | 2055 | |
0547a9b3 YS |
2056 | tid = le64_to_cpu(hdr->tid); |
2057 | mutex_lock(&osdc->request_mutex); | |
2058 | req = __lookup_request(osdc, tid); | |
2059 | if (!req) { | |
2060 | *skip = 1; | |
2061 | m = NULL; | |
756a16a5 SW |
2062 | dout("get_reply unknown tid %llu from osd%d\n", tid, |
2063 | osd->o_osd); | |
0547a9b3 YS |
2064 | goto out; |
2065 | } | |
c16e7869 SW |
2066 | |
2067 | if (req->r_con_filling_msg) { | |
8921d114 | 2068 | dout("%s revoking msg %p from old con %p\n", __func__, |
c16e7869 | 2069 | req->r_reply, req->r_con_filling_msg); |
8921d114 | 2070 | ceph_msg_revoke_incoming(req->r_reply); |
0d47766f | 2071 | req->r_con_filling_msg->ops->put(req->r_con_filling_msg); |
6f46cb29 | 2072 | req->r_con_filling_msg = NULL; |
0547a9b3 YS |
2073 | } |
2074 | ||
c16e7869 SW |
2075 | if (front > req->r_reply->front.iov_len) { |
2076 | pr_warning("get_reply front %d > preallocated %d\n", | |
2077 | front, (int)req->r_reply->front.iov_len); | |
b61c2763 | 2078 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); |
a79832f2 | 2079 | if (!m) |
c16e7869 SW |
2080 | goto out; |
2081 | ceph_msg_put(req->r_reply); | |
2082 | req->r_reply = m; | |
2083 | } | |
2084 | m = ceph_msg_get(req->r_reply); | |
2085 | ||
0547a9b3 | 2086 | if (data_len > 0) { |
b7495fc2 | 2087 | int want = calc_pages_for(req->r_page_alignment, data_len); |
21b667f6 | 2088 | |
9cbb1d72 | 2089 | if (req->r_pages && unlikely(req->r_num_pages < want)) { |
9bb0ce2b SW |
2090 | pr_warning("tid %lld reply has %d bytes %d pages, we" |
2091 | " had only %d pages ready\n", tid, data_len, | |
2092 | want, req->r_num_pages); | |
0547a9b3 YS |
2093 | *skip = 1; |
2094 | ceph_msg_put(m); | |
a79832f2 | 2095 | m = NULL; |
21b667f6 | 2096 | goto out; |
0547a9b3 | 2097 | } |
21b667f6 SW |
2098 | m->pages = req->r_pages; |
2099 | m->nr_pages = req->r_num_pages; | |
c5c6b19d | 2100 | m->page_alignment = req->r_page_alignment; |
68b4476b YS |
2101 | #ifdef CONFIG_BLOCK |
2102 | m->bio = req->r_bio; | |
2103 | #endif | |
0547a9b3 | 2104 | } |
5b3a4db3 | 2105 | *skip = 0; |
0d47766f | 2106 | req->r_con_filling_msg = con->ops->get(con); |
c16e7869 | 2107 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 YS |
2108 | |
2109 | out: | |
2110 | mutex_unlock(&osdc->request_mutex); | |
2450418c | 2111 | return m; |
5b3a4db3 SW |
2112 | |
2113 | } | |
2114 | ||
2115 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, | |
2116 | struct ceph_msg_header *hdr, | |
2117 | int *skip) | |
2118 | { | |
2119 | struct ceph_osd *osd = con->private; | |
2120 | int type = le16_to_cpu(hdr->type); | |
2121 | int front = le32_to_cpu(hdr->front_len); | |
2122 | ||
1c20f2d2 | 2123 | *skip = 0; |
5b3a4db3 SW |
2124 | switch (type) { |
2125 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 2126 | case CEPH_MSG_WATCH_NOTIFY: |
b61c2763 | 2127 | return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3 SW |
2128 | case CEPH_MSG_OSD_OPREPLY: |
2129 | return get_reply(con, hdr, skip); | |
2130 | default: | |
2131 | pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, | |
2132 | osd->o_osd); | |
2133 | *skip = 1; | |
2134 | return NULL; | |
2135 | } | |
f24e9980 SW |
2136 | } |
2137 | ||
2138 | /* | |
2139 | * Wrappers to refcount containing ceph_osd struct | |
2140 | */ | |
2141 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
2142 | { | |
2143 | struct ceph_osd *osd = con->private; | |
2144 | if (get_osd(osd)) | |
2145 | return con; | |
2146 | return NULL; | |
2147 | } | |
2148 | ||
2149 | static void put_osd_con(struct ceph_connection *con) | |
2150 | { | |
2151 | struct ceph_osd *osd = con->private; | |
2152 | put_osd(osd); | |
2153 | } | |
2154 | ||
4e7a5dcd SW |
2155 | /* |
2156 | * authentication | |
2157 | */ | |
a3530df3 AE |
2158 | /* |
2159 | * Note: returned pointer is the address of a structure that's | |
2160 | * managed separately. Caller must *not* attempt to free it. | |
2161 | */ | |
2162 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 2163 | int *proto, int force_new) |
4e7a5dcd SW |
2164 | { |
2165 | struct ceph_osd *o = con->private; | |
2166 | struct ceph_osd_client *osdc = o->o_osdc; | |
2167 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 2168 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 2169 | |
74f1869f | 2170 | if (force_new && auth->authorizer) { |
a255651d AE |
2171 | if (ac->ops && ac->ops->destroy_authorizer) |
2172 | ac->ops->destroy_authorizer(ac, auth->authorizer); | |
74f1869f AE |
2173 | auth->authorizer = NULL; |
2174 | } | |
a255651d | 2175 | if (!auth->authorizer && ac->ops && ac->ops->create_authorizer) { |
a3530df3 AE |
2176 | int ret = ac->ops->create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, |
2177 | auth); | |
4e7a5dcd | 2178 | if (ret) |
a3530df3 | 2179 | return ERR_PTR(ret); |
4e7a5dcd | 2180 | } |
4e7a5dcd | 2181 | *proto = ac->protocol; |
74f1869f | 2182 | |
a3530df3 | 2183 | return auth; |
4e7a5dcd SW |
2184 | } |
2185 | ||
2186 | ||
2187 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
2188 | { | |
2189 | struct ceph_osd *o = con->private; | |
2190 | struct ceph_osd_client *osdc = o->o_osdc; | |
2191 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2192 | ||
a255651d AE |
2193 | /* |
2194 | * XXX If ac->ops or ac->ops->verify_authorizer_reply is null, | |
2195 | * XXX which do we do: succeed or fail? | |
2196 | */ | |
6c4a1915 | 2197 | return ac->ops->verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
2198 | } |
2199 | ||
9bd2e6f8 SW |
2200 | static int invalidate_authorizer(struct ceph_connection *con) |
2201 | { | |
2202 | struct ceph_osd *o = con->private; | |
2203 | struct ceph_osd_client *osdc = o->o_osdc; | |
2204 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2205 | ||
a255651d | 2206 | if (ac->ops && ac->ops->invalidate_authorizer) |
9bd2e6f8 SW |
2207 | ac->ops->invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
2208 | ||
2209 | return ceph_monc_validate_auth(&osdc->client->monc); | |
2210 | } | |
4e7a5dcd | 2211 | |
9e32789f | 2212 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
2213 | .get = get_osd_con, |
2214 | .put = put_osd_con, | |
2215 | .dispatch = dispatch, | |
4e7a5dcd SW |
2216 | .get_authorizer = get_authorizer, |
2217 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 2218 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 2219 | .alloc_msg = alloc_msg, |
81b024e7 | 2220 | .fault = osd_reset, |
f24e9980 | 2221 | }; |