Commit | Line | Data |
---|---|---|
a4ce40a9 | 1 | |
3d14c5d2 | 2 | #include <linux/ceph/ceph_debug.h> |
f24e9980 | 3 | |
3d14c5d2 | 4 | #include <linux/module.h> |
f24e9980 SW |
5 | #include <linux/err.h> |
6 | #include <linux/highmem.h> | |
7 | #include <linux/mm.h> | |
8 | #include <linux/pagemap.h> | |
9 | #include <linux/slab.h> | |
10 | #include <linux/uaccess.h> | |
68b4476b YS |
11 | #ifdef CONFIG_BLOCK |
12 | #include <linux/bio.h> | |
13 | #endif | |
f24e9980 | 14 | |
3d14c5d2 YS |
15 | #include <linux/ceph/libceph.h> |
16 | #include <linux/ceph/osd_client.h> | |
17 | #include <linux/ceph/messenger.h> | |
18 | #include <linux/ceph/decode.h> | |
19 | #include <linux/ceph/auth.h> | |
20 | #include <linux/ceph/pagelist.h> | |
f24e9980 | 21 | |
c16e7869 SW |
22 | #define OSD_OP_FRONT_LEN 4096 |
23 | #define OSD_OPREPLY_FRONT_LEN 512 | |
0d59ab81 | 24 | |
9e32789f | 25 | static const struct ceph_connection_operations osd_con_ops; |
f24e9980 | 26 | |
f9d25199 | 27 | static void __send_queued(struct ceph_osd_client *osdc); |
6f6c7006 | 28 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); |
a40c4f10 YS |
29 | static void __register_request(struct ceph_osd_client *osdc, |
30 | struct ceph_osd_request *req); | |
31 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
32 | struct ceph_osd_request *req); | |
56e925b6 SW |
33 | static void __send_request(struct ceph_osd_client *osdc, |
34 | struct ceph_osd_request *req); | |
f24e9980 SW |
35 | |
36 | /* | |
37 | * Implement client access to distributed object storage cluster. | |
38 | * | |
39 | * All data objects are stored within a cluster/cloud of OSDs, or | |
40 | * "object storage devices." (Note that Ceph OSDs have _nothing_ to | |
41 | * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply | |
42 | * remote daemons serving up and coordinating consistent and safe | |
43 | * access to storage. | |
44 | * | |
45 | * Cluster membership and the mapping of data objects onto storage devices | |
46 | * are described by the osd map. | |
47 | * | |
48 | * We keep track of pending OSD requests (read, write), resubmit | |
49 | * requests to different OSDs when the cluster topology/data layout | |
50 | * change, or retry the affected requests when the communications | |
51 | * channel with an OSD is reset. | |
52 | */ | |
53 | ||
54 | /* | |
55 | * calculate the mapping of a file extent onto an object, and fill out the | |
56 | * request accordingly. shorten extent as necessary if it crosses an | |
57 | * object boundary. | |
58 | * | |
59 | * fill osd op in request message. | |
60 | */ | |
dbe0fc41 | 61 | static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, |
a19dadfb | 62 | u64 *objnum, u64 *objoff, u64 *objlen) |
f24e9980 | 63 | { |
60e56f13 | 64 | u64 orig_len = *plen; |
d63b77f4 | 65 | int r; |
f24e9980 | 66 | |
60e56f13 | 67 | /* object extent? */ |
75d1c941 AE |
68 | r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, |
69 | objoff, objlen); | |
d63b77f4 SW |
70 | if (r < 0) |
71 | return r; | |
75d1c941 AE |
72 | if (*objlen < orig_len) { |
73 | *plen = *objlen; | |
60e56f13 AE |
74 | dout(" skipping last %llu, final file extent %llu~%llu\n", |
75 | orig_len - *plen, off, *plen); | |
76 | } | |
77 | ||
75d1c941 | 78 | dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); |
f24e9980 | 79 | |
3ff5f385 | 80 | return 0; |
f24e9980 SW |
81 | } |
82 | ||
c54d47bf AE |
83 | static void ceph_osd_data_init(struct ceph_osd_data *osd_data) |
84 | { | |
85 | memset(osd_data, 0, sizeof (*osd_data)); | |
86 | osd_data->type = CEPH_OSD_DATA_TYPE_NONE; | |
87 | } | |
88 | ||
a4ce40a9 | 89 | static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
90 | struct page **pages, u64 length, u32 alignment, |
91 | bool pages_from_pool, bool own_pages) | |
92 | { | |
93 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; | |
94 | osd_data->pages = pages; | |
95 | osd_data->length = length; | |
96 | osd_data->alignment = alignment; | |
97 | osd_data->pages_from_pool = pages_from_pool; | |
98 | osd_data->own_pages = own_pages; | |
99 | } | |
43bfe5de | 100 | |
a4ce40a9 | 101 | static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
102 | struct ceph_pagelist *pagelist) |
103 | { | |
104 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; | |
105 | osd_data->pagelist = pagelist; | |
106 | } | |
43bfe5de AE |
107 | |
108 | #ifdef CONFIG_BLOCK | |
a4ce40a9 | 109 | static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
110 | struct bio *bio, size_t bio_length) |
111 | { | |
112 | osd_data->type = CEPH_OSD_DATA_TYPE_BIO; | |
113 | osd_data->bio = bio; | |
114 | osd_data->bio_length = bio_length; | |
115 | } | |
43bfe5de AE |
116 | #endif /* CONFIG_BLOCK */ |
117 | ||
a4ce40a9 AE |
118 | struct ceph_osd_data * |
119 | osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, | |
120 | unsigned int which, bool write_request) | |
121 | { | |
122 | BUG_ON(which >= osd_req->r_num_ops); | |
123 | ||
5476492f | 124 | return &osd_req->r_ops[which].extent.osd_data; |
a4ce40a9 AE |
125 | } |
126 | EXPORT_SYMBOL(osd_req_op_extent_osd_data); | |
127 | ||
128 | struct ceph_osd_data * | |
129 | osd_req_op_cls_request_info(struct ceph_osd_request *osd_req, | |
130 | unsigned int which) | |
131 | { | |
132 | BUG_ON(which >= osd_req->r_num_ops); | |
133 | ||
5476492f | 134 | return &osd_req->r_ops[which].cls.request_info; |
a4ce40a9 AE |
135 | } |
136 | EXPORT_SYMBOL(osd_req_op_cls_request_info); /* ??? */ | |
137 | ||
04017e29 AE |
138 | struct ceph_osd_data * |
139 | osd_req_op_cls_request_data(struct ceph_osd_request *osd_req, | |
140 | unsigned int which) | |
141 | { | |
142 | BUG_ON(which >= osd_req->r_num_ops); | |
143 | ||
144 | return &osd_req->r_ops[which].cls.request_data; | |
145 | } | |
146 | EXPORT_SYMBOL(osd_req_op_cls_request_data); /* ??? */ | |
147 | ||
a4ce40a9 AE |
148 | struct ceph_osd_data * |
149 | osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, | |
150 | unsigned int which) | |
151 | { | |
152 | BUG_ON(which >= osd_req->r_num_ops); | |
153 | ||
5476492f | 154 | return &osd_req->r_ops[which].cls.response_data; |
a4ce40a9 AE |
155 | } |
156 | EXPORT_SYMBOL(osd_req_op_cls_response_data); /* ??? */ | |
157 | ||
158 | void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, | |
159 | unsigned int which, bool write_request, | |
160 | struct page **pages, u64 length, u32 alignment, | |
161 | bool pages_from_pool, bool own_pages) | |
162 | { | |
163 | struct ceph_osd_data *osd_data; | |
164 | ||
165 | osd_data = osd_req_op_extent_osd_data(osd_req, which, write_request); | |
166 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
167 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
168 | } |
169 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); | |
170 | ||
171 | void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, | |
172 | unsigned int which, bool write_request, | |
173 | struct ceph_pagelist *pagelist) | |
174 | { | |
175 | struct ceph_osd_data *osd_data; | |
176 | ||
177 | osd_data = osd_req_op_extent_osd_data(osd_req, which, write_request); | |
178 | ceph_osd_data_pagelist_init(osd_data, pagelist); | |
a4ce40a9 AE |
179 | } |
180 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); | |
181 | ||
182 | #ifdef CONFIG_BLOCK | |
183 | void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, | |
184 | unsigned int which, bool write_request, | |
185 | struct bio *bio, size_t bio_length) | |
186 | { | |
187 | struct ceph_osd_data *osd_data; | |
188 | ||
189 | osd_data = osd_req_op_extent_osd_data(osd_req, which, write_request); | |
190 | ceph_osd_data_bio_init(osd_data, bio, bio_length); | |
a4ce40a9 AE |
191 | } |
192 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); | |
193 | #endif /* CONFIG_BLOCK */ | |
194 | ||
195 | static void osd_req_op_cls_request_info_pagelist( | |
196 | struct ceph_osd_request *osd_req, | |
197 | unsigned int which, struct ceph_pagelist *pagelist) | |
198 | { | |
199 | struct ceph_osd_data *osd_data; | |
200 | ||
201 | osd_data = osd_req_op_cls_request_info(osd_req, which); | |
202 | ceph_osd_data_pagelist_init(osd_data, pagelist); | |
a4ce40a9 AE |
203 | } |
204 | ||
04017e29 AE |
205 | void osd_req_op_cls_request_data_pagelist( |
206 | struct ceph_osd_request *osd_req, | |
207 | unsigned int which, struct ceph_pagelist *pagelist) | |
208 | { | |
209 | struct ceph_osd_data *osd_data; | |
210 | ||
211 | osd_data = osd_req_op_cls_request_data(osd_req, which); | |
212 | ceph_osd_data_pagelist_init(osd_data, pagelist); | |
213 | } | |
214 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); | |
215 | ||
a4ce40a9 AE |
216 | void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, |
217 | unsigned int which, struct page **pages, u64 length, | |
218 | u32 alignment, bool pages_from_pool, bool own_pages) | |
219 | { | |
220 | struct ceph_osd_data *osd_data; | |
221 | ||
222 | osd_data = osd_req_op_cls_response_data(osd_req, which); | |
223 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
224 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
225 | } |
226 | EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); | |
227 | ||
23c08a9c AE |
228 | static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) |
229 | { | |
230 | switch (osd_data->type) { | |
231 | case CEPH_OSD_DATA_TYPE_NONE: | |
232 | return 0; | |
233 | case CEPH_OSD_DATA_TYPE_PAGES: | |
234 | return osd_data->length; | |
235 | case CEPH_OSD_DATA_TYPE_PAGELIST: | |
236 | return (u64)osd_data->pagelist->length; | |
237 | #ifdef CONFIG_BLOCK | |
238 | case CEPH_OSD_DATA_TYPE_BIO: | |
239 | return (u64)osd_data->bio_length; | |
240 | #endif /* CONFIG_BLOCK */ | |
241 | default: | |
242 | WARN(true, "unrecognized data type %d\n", (int)osd_data->type); | |
243 | return 0; | |
244 | } | |
245 | } | |
246 | ||
5476492f | 247 | |
c54d47bf AE |
248 | static void ceph_osd_data_release(struct ceph_osd_data *osd_data) |
249 | { | |
5476492f | 250 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { |
c54d47bf AE |
251 | int num_pages; |
252 | ||
253 | num_pages = calc_pages_for((u64)osd_data->alignment, | |
254 | (u64)osd_data->length); | |
255 | ceph_release_page_vector(osd_data->pages, num_pages); | |
256 | } | |
5476492f AE |
257 | ceph_osd_data_init(osd_data); |
258 | } | |
259 | ||
260 | static void osd_req_op_data_release(struct ceph_osd_request *osd_req, | |
261 | unsigned int which) | |
262 | { | |
263 | struct ceph_osd_req_op *op; | |
264 | ||
265 | BUG_ON(which >= osd_req->r_num_ops); | |
266 | op = &osd_req->r_ops[which]; | |
267 | ||
268 | switch (op->op) { | |
269 | case CEPH_OSD_OP_READ: | |
270 | case CEPH_OSD_OP_WRITE: | |
271 | ceph_osd_data_release(&op->extent.osd_data); | |
272 | break; | |
273 | case CEPH_OSD_OP_CALL: | |
274 | ceph_osd_data_release(&op->cls.request_info); | |
04017e29 | 275 | ceph_osd_data_release(&op->cls.request_data); |
5476492f AE |
276 | ceph_osd_data_release(&op->cls.response_data); |
277 | break; | |
278 | default: | |
279 | break; | |
280 | } | |
c54d47bf AE |
281 | } |
282 | ||
f24e9980 SW |
283 | /* |
284 | * requests | |
285 | */ | |
415e49a9 | 286 | void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 287 | { |
c54d47bf | 288 | struct ceph_osd_request *req; |
5476492f | 289 | unsigned int which; |
415e49a9 | 290 | |
c54d47bf | 291 | req = container_of(kref, struct ceph_osd_request, r_kref); |
415e49a9 SW |
292 | if (req->r_request) |
293 | ceph_msg_put(req->r_request); | |
ace6d3a9 | 294 | if (req->r_reply) { |
8921d114 | 295 | ceph_msg_revoke_incoming(req->r_reply); |
ab8cb34a | 296 | ceph_msg_put(req->r_reply); |
ace6d3a9 | 297 | } |
0fff87ec | 298 | |
5476492f AE |
299 | for (which = 0; which < req->r_num_ops; which++) |
300 | osd_req_op_data_release(req, which); | |
0fff87ec | 301 | |
415e49a9 SW |
302 | ceph_put_snap_context(req->r_snapc); |
303 | if (req->r_mempool) | |
304 | mempool_free(req, req->r_osdc->req_mempool); | |
305 | else | |
306 | kfree(req); | |
f24e9980 | 307 | } |
3d14c5d2 | 308 | EXPORT_SYMBOL(ceph_osdc_release_request); |
68b4476b | 309 | |
3499e8a5 | 310 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 311 | struct ceph_snap_context *snapc, |
1b83bef2 | 312 | unsigned int num_ops, |
3499e8a5 | 313 | bool use_mempool, |
54a54007 | 314 | gfp_t gfp_flags) |
f24e9980 SW |
315 | { |
316 | struct ceph_osd_request *req; | |
317 | struct ceph_msg *msg; | |
1b83bef2 SW |
318 | size_t msg_size; |
319 | ||
79528734 AE |
320 | BUILD_BUG_ON(CEPH_OSD_MAX_OP > U16_MAX); |
321 | BUG_ON(num_ops > CEPH_OSD_MAX_OP); | |
322 | ||
1b83bef2 SW |
323 | msg_size = 4 + 4 + 8 + 8 + 4+8; |
324 | msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ | |
325 | msg_size += 1 + 8 + 4 + 4; /* pg_t */ | |
326 | msg_size += 4 + MAX_OBJ_NAME_SIZE; | |
327 | msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); | |
328 | msg_size += 8; /* snapid */ | |
329 | msg_size += 8; /* snap_seq */ | |
330 | msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ | |
331 | msg_size += 4; | |
f24e9980 SW |
332 | |
333 | if (use_mempool) { | |
3499e8a5 | 334 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
f24e9980 SW |
335 | memset(req, 0, sizeof(*req)); |
336 | } else { | |
3499e8a5 | 337 | req = kzalloc(sizeof(*req), gfp_flags); |
f24e9980 SW |
338 | } |
339 | if (req == NULL) | |
a79832f2 | 340 | return NULL; |
f24e9980 | 341 | |
f24e9980 SW |
342 | req->r_osdc = osdc; |
343 | req->r_mempool = use_mempool; | |
79528734 | 344 | req->r_num_ops = num_ops; |
68b4476b | 345 | |
415e49a9 | 346 | kref_init(&req->r_kref); |
f24e9980 SW |
347 | init_completion(&req->r_completion); |
348 | init_completion(&req->r_safe_completion); | |
a978fa20 | 349 | RB_CLEAR_NODE(&req->r_node); |
f24e9980 | 350 | INIT_LIST_HEAD(&req->r_unsafe_item); |
a40c4f10 YS |
351 | INIT_LIST_HEAD(&req->r_linger_item); |
352 | INIT_LIST_HEAD(&req->r_linger_osd); | |
935b639a | 353 | INIT_LIST_HEAD(&req->r_req_lru_item); |
cd43045c SW |
354 | INIT_LIST_HEAD(&req->r_osd_item); |
355 | ||
c16e7869 SW |
356 | /* create reply message */ |
357 | if (use_mempool) | |
358 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
359 | else | |
360 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, | |
b61c2763 | 361 | OSD_OPREPLY_FRONT_LEN, gfp_flags, true); |
a79832f2 | 362 | if (!msg) { |
c16e7869 | 363 | ceph_osdc_put_request(req); |
a79832f2 | 364 | return NULL; |
c16e7869 SW |
365 | } |
366 | req->r_reply = msg; | |
367 | ||
368 | /* create request message; allow space for oid */ | |
f24e9980 | 369 | if (use_mempool) |
8f3bc053 | 370 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 371 | else |
b61c2763 | 372 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); |
a79832f2 | 373 | if (!msg) { |
f24e9980 | 374 | ceph_osdc_put_request(req); |
a79832f2 | 375 | return NULL; |
f24e9980 | 376 | } |
68b4476b | 377 | |
f24e9980 | 378 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 YS |
379 | |
380 | req->r_request = msg; | |
3499e8a5 YS |
381 | |
382 | return req; | |
383 | } | |
3d14c5d2 | 384 | EXPORT_SYMBOL(ceph_osdc_alloc_request); |
3499e8a5 | 385 | |
a8dd0a37 | 386 | static bool osd_req_opcode_valid(u16 opcode) |
68b4476b | 387 | { |
a8dd0a37 | 388 | switch (opcode) { |
68b4476b | 389 | case CEPH_OSD_OP_READ: |
a8dd0a37 | 390 | case CEPH_OSD_OP_STAT: |
4c46459c AE |
391 | case CEPH_OSD_OP_MAPEXT: |
392 | case CEPH_OSD_OP_MASKTRUNC: | |
393 | case CEPH_OSD_OP_SPARSE_READ: | |
a9f36c3e | 394 | case CEPH_OSD_OP_NOTIFY: |
a8dd0a37 | 395 | case CEPH_OSD_OP_NOTIFY_ACK: |
4c46459c | 396 | case CEPH_OSD_OP_ASSERT_VER: |
a8dd0a37 | 397 | case CEPH_OSD_OP_WRITE: |
4c46459c AE |
398 | case CEPH_OSD_OP_WRITEFULL: |
399 | case CEPH_OSD_OP_TRUNCATE: | |
400 | case CEPH_OSD_OP_ZERO: | |
401 | case CEPH_OSD_OP_DELETE: | |
402 | case CEPH_OSD_OP_APPEND: | |
a8dd0a37 | 403 | case CEPH_OSD_OP_STARTSYNC: |
4c46459c AE |
404 | case CEPH_OSD_OP_SETTRUNC: |
405 | case CEPH_OSD_OP_TRIMTRUNC: | |
406 | case CEPH_OSD_OP_TMAPUP: | |
407 | case CEPH_OSD_OP_TMAPPUT: | |
408 | case CEPH_OSD_OP_TMAPGET: | |
409 | case CEPH_OSD_OP_CREATE: | |
a9f36c3e | 410 | case CEPH_OSD_OP_ROLLBACK: |
a8dd0a37 | 411 | case CEPH_OSD_OP_WATCH: |
4c46459c AE |
412 | case CEPH_OSD_OP_OMAPGETKEYS: |
413 | case CEPH_OSD_OP_OMAPGETVALS: | |
414 | case CEPH_OSD_OP_OMAPGETHEADER: | |
415 | case CEPH_OSD_OP_OMAPGETVALSBYKEYS: | |
4c46459c AE |
416 | case CEPH_OSD_OP_OMAPSETVALS: |
417 | case CEPH_OSD_OP_OMAPSETHEADER: | |
418 | case CEPH_OSD_OP_OMAPCLEAR: | |
419 | case CEPH_OSD_OP_OMAPRMKEYS: | |
420 | case CEPH_OSD_OP_OMAP_CMP: | |
421 | case CEPH_OSD_OP_CLONERANGE: | |
422 | case CEPH_OSD_OP_ASSERT_SRC_VERSION: | |
423 | case CEPH_OSD_OP_SRC_CMPXATTR: | |
a9f36c3e | 424 | case CEPH_OSD_OP_GETXATTR: |
4c46459c | 425 | case CEPH_OSD_OP_GETXATTRS: |
a9f36c3e AE |
426 | case CEPH_OSD_OP_CMPXATTR: |
427 | case CEPH_OSD_OP_SETXATTR: | |
4c46459c AE |
428 | case CEPH_OSD_OP_SETXATTRS: |
429 | case CEPH_OSD_OP_RESETXATTRS: | |
430 | case CEPH_OSD_OP_RMXATTR: | |
431 | case CEPH_OSD_OP_PULL: | |
432 | case CEPH_OSD_OP_PUSH: | |
433 | case CEPH_OSD_OP_BALANCEREADS: | |
434 | case CEPH_OSD_OP_UNBALANCEREADS: | |
435 | case CEPH_OSD_OP_SCRUB: | |
436 | case CEPH_OSD_OP_SCRUB_RESERVE: | |
437 | case CEPH_OSD_OP_SCRUB_UNRESERVE: | |
438 | case CEPH_OSD_OP_SCRUB_STOP: | |
439 | case CEPH_OSD_OP_SCRUB_MAP: | |
440 | case CEPH_OSD_OP_WRLOCK: | |
441 | case CEPH_OSD_OP_WRUNLOCK: | |
442 | case CEPH_OSD_OP_RDLOCK: | |
443 | case CEPH_OSD_OP_RDUNLOCK: | |
444 | case CEPH_OSD_OP_UPLOCK: | |
445 | case CEPH_OSD_OP_DNLOCK: | |
a8dd0a37 | 446 | case CEPH_OSD_OP_CALL: |
4c46459c AE |
447 | case CEPH_OSD_OP_PGLS: |
448 | case CEPH_OSD_OP_PGLS_FILTER: | |
a8dd0a37 AE |
449 | return true; |
450 | default: | |
451 | return false; | |
452 | } | |
453 | } | |
454 | ||
33803f33 AE |
455 | /* |
456 | * This is an osd op init function for opcodes that have no data or | |
457 | * other information associated with them. It also serves as a | |
458 | * common init routine for all the other init functions, below. | |
459 | */ | |
c99d2d4a AE |
460 | static struct ceph_osd_req_op * |
461 | osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, | |
462 | u16 opcode) | |
33803f33 | 463 | { |
c99d2d4a AE |
464 | struct ceph_osd_req_op *op; |
465 | ||
466 | BUG_ON(which >= osd_req->r_num_ops); | |
33803f33 AE |
467 | BUG_ON(!osd_req_opcode_valid(opcode)); |
468 | ||
c99d2d4a | 469 | op = &osd_req->r_ops[which]; |
33803f33 | 470 | memset(op, 0, sizeof (*op)); |
33803f33 | 471 | op->op = opcode; |
c99d2d4a AE |
472 | |
473 | return op; | |
33803f33 AE |
474 | } |
475 | ||
c99d2d4a AE |
476 | void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
477 | unsigned int which, u16 opcode, | |
33803f33 AE |
478 | u64 offset, u64 length, |
479 | u64 truncate_size, u32 truncate_seq) | |
480 | { | |
c99d2d4a | 481 | struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, opcode); |
33803f33 AE |
482 | size_t payload_len = 0; |
483 | ||
484 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); | |
485 | ||
33803f33 AE |
486 | op->extent.offset = offset; |
487 | op->extent.length = length; | |
488 | op->extent.truncate_size = truncate_size; | |
489 | op->extent.truncate_seq = truncate_seq; | |
490 | if (opcode == CEPH_OSD_OP_WRITE) | |
491 | payload_len += length; | |
492 | ||
493 | op->payload_len = payload_len; | |
494 | } | |
495 | EXPORT_SYMBOL(osd_req_op_extent_init); | |
496 | ||
c99d2d4a AE |
497 | void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
498 | unsigned int which, u64 length) | |
e5975c7c | 499 | { |
c99d2d4a AE |
500 | struct ceph_osd_req_op *op; |
501 | u64 previous; | |
502 | ||
503 | BUG_ON(which >= osd_req->r_num_ops); | |
504 | op = &osd_req->r_ops[which]; | |
505 | previous = op->extent.length; | |
e5975c7c AE |
506 | |
507 | if (length == previous) | |
508 | return; /* Nothing to do */ | |
509 | BUG_ON(length > previous); | |
510 | ||
511 | op->extent.length = length; | |
512 | op->payload_len -= previous - length; | |
513 | } | |
514 | EXPORT_SYMBOL(osd_req_op_extent_update); | |
515 | ||
c99d2d4a | 516 | void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, |
04017e29 | 517 | u16 opcode, const char *class, const char *method) |
33803f33 | 518 | { |
c99d2d4a | 519 | struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, opcode); |
5f562df5 | 520 | struct ceph_pagelist *pagelist; |
33803f33 AE |
521 | size_t payload_len = 0; |
522 | size_t size; | |
523 | ||
524 | BUG_ON(opcode != CEPH_OSD_OP_CALL); | |
525 | ||
5f562df5 AE |
526 | pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); |
527 | BUG_ON(!pagelist); | |
528 | ceph_pagelist_init(pagelist); | |
529 | ||
33803f33 AE |
530 | op->cls.class_name = class; |
531 | size = strlen(class); | |
532 | BUG_ON(size > (size_t) U8_MAX); | |
533 | op->cls.class_len = size; | |
5f562df5 | 534 | ceph_pagelist_append(pagelist, class, size); |
33803f33 AE |
535 | payload_len += size; |
536 | ||
537 | op->cls.method_name = method; | |
538 | size = strlen(method); | |
539 | BUG_ON(size > (size_t) U8_MAX); | |
540 | op->cls.method_len = size; | |
5f562df5 | 541 | ceph_pagelist_append(pagelist, method, size); |
33803f33 AE |
542 | payload_len += size; |
543 | ||
a4ce40a9 | 544 | osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); |
5f562df5 | 545 | |
33803f33 AE |
546 | op->cls.argc = 0; /* currently unused */ |
547 | ||
548 | op->payload_len = payload_len; | |
549 | } | |
550 | EXPORT_SYMBOL(osd_req_op_cls_init); | |
8c042b0d | 551 | |
c99d2d4a AE |
552 | void osd_req_op_watch_init(struct ceph_osd_request *osd_req, |
553 | unsigned int which, u16 opcode, | |
33803f33 AE |
554 | u64 cookie, u64 version, int flag) |
555 | { | |
c99d2d4a | 556 | struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, opcode); |
33803f33 | 557 | |
c99d2d4a | 558 | BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); |
33803f33 AE |
559 | |
560 | op->watch.cookie = cookie; | |
561 | /* op->watch.ver = version; */ /* XXX 3847 */ | |
562 | op->watch.ver = cpu_to_le64(version); | |
563 | if (opcode == CEPH_OSD_OP_WATCH && flag) | |
c99d2d4a | 564 | op->watch.flag = (u8)1; |
33803f33 AE |
565 | } |
566 | EXPORT_SYMBOL(osd_req_op_watch_init); | |
567 | ||
90af3602 | 568 | static void ceph_osdc_msg_data_add(struct ceph_msg *msg, |
ec9123c5 AE |
569 | struct ceph_osd_data *osd_data) |
570 | { | |
571 | u64 length = ceph_osd_data_length(osd_data); | |
572 | ||
573 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { | |
574 | BUG_ON(length > (u64) SIZE_MAX); | |
575 | if (length) | |
90af3602 | 576 | ceph_msg_data_add_pages(msg, osd_data->pages, |
ec9123c5 AE |
577 | length, osd_data->alignment); |
578 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { | |
579 | BUG_ON(!length); | |
90af3602 | 580 | ceph_msg_data_add_pagelist(msg, osd_data->pagelist); |
ec9123c5 AE |
581 | #ifdef CONFIG_BLOCK |
582 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { | |
90af3602 | 583 | ceph_msg_data_add_bio(msg, osd_data->bio, length); |
ec9123c5 AE |
584 | #endif |
585 | } else { | |
586 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); | |
587 | } | |
588 | } | |
589 | ||
a8dd0a37 | 590 | static u64 osd_req_encode_op(struct ceph_osd_request *req, |
79528734 | 591 | struct ceph_osd_op *dst, unsigned int which) |
a8dd0a37 | 592 | { |
79528734 | 593 | struct ceph_osd_req_op *src; |
04017e29 | 594 | struct ceph_osd_data *osd_data; |
54d50649 | 595 | u64 request_data_len = 0; |
04017e29 | 596 | u64 data_length; |
a8dd0a37 | 597 | |
79528734 AE |
598 | BUG_ON(which >= req->r_num_ops); |
599 | src = &req->r_ops[which]; | |
a8dd0a37 AE |
600 | if (WARN_ON(!osd_req_opcode_valid(src->op))) { |
601 | pr_err("unrecognized osd opcode %d\n", src->op); | |
602 | ||
603 | return 0; | |
604 | } | |
605 | ||
606 | switch (src->op) { | |
607 | case CEPH_OSD_OP_STAT: | |
608 | break; | |
609 | case CEPH_OSD_OP_READ: | |
610 | case CEPH_OSD_OP_WRITE: | |
611 | if (src->op == CEPH_OSD_OP_WRITE) | |
54d50649 | 612 | request_data_len = src->extent.length; |
a8dd0a37 AE |
613 | dst->extent.offset = cpu_to_le64(src->extent.offset); |
614 | dst->extent.length = cpu_to_le64(src->extent.length); | |
615 | dst->extent.truncate_size = | |
616 | cpu_to_le64(src->extent.truncate_size); | |
617 | dst->extent.truncate_seq = | |
618 | cpu_to_le32(src->extent.truncate_seq); | |
04017e29 | 619 | osd_data = &src->extent.osd_data; |
5476492f | 620 | if (src->op == CEPH_OSD_OP_WRITE) |
04017e29 | 621 | ceph_osdc_msg_data_add(req->r_request, osd_data); |
5476492f | 622 | else |
04017e29 | 623 | ceph_osdc_msg_data_add(req->r_reply, osd_data); |
a8dd0a37 AE |
624 | break; |
625 | case CEPH_OSD_OP_CALL: | |
a8dd0a37 AE |
626 | dst->cls.class_len = src->cls.class_len; |
627 | dst->cls.method_len = src->cls.method_len; | |
04017e29 AE |
628 | osd_data = &src->cls.request_info; |
629 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
630 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); | |
631 | request_data_len = osd_data->pagelist->length; | |
632 | ||
633 | osd_data = &src->cls.request_data; | |
634 | data_length = ceph_osd_data_length(osd_data); | |
635 | if (data_length) { | |
636 | BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); | |
637 | dst->cls.indata_len = cpu_to_le32(data_length); | |
638 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
639 | src->payload_len += data_length; | |
640 | request_data_len += data_length; | |
641 | } | |
642 | osd_data = &src->cls.response_data; | |
643 | ceph_osdc_msg_data_add(req->r_reply, osd_data); | |
a8dd0a37 AE |
644 | break; |
645 | case CEPH_OSD_OP_STARTSYNC: | |
646 | break; | |
647 | case CEPH_OSD_OP_NOTIFY_ACK: | |
648 | case CEPH_OSD_OP_WATCH: | |
649 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
650 | dst->watch.ver = cpu_to_le64(src->watch.ver); | |
651 | dst->watch.flag = src->watch.flag; | |
652 | break; | |
653 | default: | |
4c46459c | 654 | pr_err("unsupported osd opcode %s\n", |
8f63ca2d | 655 | ceph_osd_op_name(src->op)); |
4c46459c | 656 | WARN_ON(1); |
a8dd0a37 AE |
657 | |
658 | return 0; | |
68b4476b | 659 | } |
a8dd0a37 | 660 | dst->op = cpu_to_le16(src->op); |
68b4476b | 661 | dst->payload_len = cpu_to_le32(src->payload_len); |
175face2 | 662 | |
54d50649 | 663 | return request_data_len; |
68b4476b YS |
664 | } |
665 | ||
3499e8a5 YS |
666 | /* |
667 | * build new request AND message, calculate layout, and adjust file | |
668 | * extent as needed. | |
669 | * | |
670 | * if the file was recently truncated, we include information about its | |
671 | * old and new size so that the object can be updated appropriately. (we | |
672 | * avoid synchronously deleting truncated objects because it's slow.) | |
673 | * | |
674 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
675 | * data quickly. | |
676 | */ | |
677 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
678 | struct ceph_file_layout *layout, | |
679 | struct ceph_vino vino, | |
acead002 | 680 | u64 off, u64 *plen, int num_ops, |
3499e8a5 YS |
681 | int opcode, int flags, |
682 | struct ceph_snap_context *snapc, | |
3499e8a5 YS |
683 | u32 truncate_seq, |
684 | u64 truncate_size, | |
153e5167 | 685 | bool use_mempool) |
3499e8a5 | 686 | { |
68b4476b | 687 | struct ceph_osd_request *req; |
75d1c941 AE |
688 | u64 objnum = 0; |
689 | u64 objoff = 0; | |
690 | u64 objlen = 0; | |
d18d1e28 AE |
691 | u32 object_size; |
692 | u64 object_base; | |
6816282d | 693 | int r; |
68b4476b | 694 | |
d18d1e28 | 695 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); |
68b4476b | 696 | |
acead002 | 697 | req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, |
ae7ca4a3 | 698 | GFP_NOFS); |
4ad12621 | 699 | if (!req) |
6816282d | 700 | return ERR_PTR(-ENOMEM); |
79528734 | 701 | |
d178a9e7 | 702 | req->r_flags = flags; |
3499e8a5 YS |
703 | |
704 | /* calculate max write size */ | |
a19dadfb | 705 | r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); |
3ff5f385 AE |
706 | if (r < 0) { |
707 | ceph_osdc_put_request(req); | |
6816282d | 708 | return ERR_PTR(r); |
3ff5f385 | 709 | } |
a19dadfb | 710 | |
d18d1e28 AE |
711 | object_size = le32_to_cpu(layout->fl_object_size); |
712 | object_base = off - objoff; | |
713 | if (truncate_size <= object_base) { | |
714 | truncate_size = 0; | |
715 | } else { | |
716 | truncate_size -= object_base; | |
717 | if (truncate_size > object_size) | |
718 | truncate_size = object_size; | |
a19dadfb | 719 | } |
d18d1e28 | 720 | |
c99d2d4a | 721 | osd_req_op_extent_init(req, 0, opcode, objoff, objlen, |
b0270324 | 722 | truncate_size, truncate_seq); |
8c042b0d | 723 | |
acead002 AE |
724 | /* |
725 | * A second op in the ops array means the caller wants to | |
726 | * also issue a include a 'startsync' command so that the | |
727 | * osd will flush data quickly. | |
728 | */ | |
729 | if (num_ops > 1) | |
c99d2d4a | 730 | osd_req_op_init(req, 1, CEPH_OSD_OP_STARTSYNC); |
d18d1e28 | 731 | |
3499e8a5 YS |
732 | req->r_file_layout = *layout; /* keep a copy */ |
733 | ||
75d1c941 AE |
734 | snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", |
735 | vino.ino, objnum); | |
dbe0fc41 AE |
736 | req->r_oid_len = strlen(req->r_oid); |
737 | ||
f24e9980 SW |
738 | return req; |
739 | } | |
3d14c5d2 | 740 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
741 | |
742 | /* | |
743 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
744 | */ | |
745 | static void __insert_request(struct ceph_osd_client *osdc, | |
746 | struct ceph_osd_request *new) | |
747 | { | |
748 | struct rb_node **p = &osdc->requests.rb_node; | |
749 | struct rb_node *parent = NULL; | |
750 | struct ceph_osd_request *req = NULL; | |
751 | ||
752 | while (*p) { | |
753 | parent = *p; | |
754 | req = rb_entry(parent, struct ceph_osd_request, r_node); | |
755 | if (new->r_tid < req->r_tid) | |
756 | p = &(*p)->rb_left; | |
757 | else if (new->r_tid > req->r_tid) | |
758 | p = &(*p)->rb_right; | |
759 | else | |
760 | BUG(); | |
761 | } | |
762 | ||
763 | rb_link_node(&new->r_node, parent, p); | |
764 | rb_insert_color(&new->r_node, &osdc->requests); | |
765 | } | |
766 | ||
767 | static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, | |
768 | u64 tid) | |
769 | { | |
770 | struct ceph_osd_request *req; | |
771 | struct rb_node *n = osdc->requests.rb_node; | |
772 | ||
773 | while (n) { | |
774 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
775 | if (tid < req->r_tid) | |
776 | n = n->rb_left; | |
777 | else if (tid > req->r_tid) | |
778 | n = n->rb_right; | |
779 | else | |
780 | return req; | |
781 | } | |
782 | return NULL; | |
783 | } | |
784 | ||
785 | static struct ceph_osd_request * | |
786 | __lookup_request_ge(struct ceph_osd_client *osdc, | |
787 | u64 tid) | |
788 | { | |
789 | struct ceph_osd_request *req; | |
790 | struct rb_node *n = osdc->requests.rb_node; | |
791 | ||
792 | while (n) { | |
793 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
794 | if (tid < req->r_tid) { | |
795 | if (!n->rb_left) | |
796 | return req; | |
797 | n = n->rb_left; | |
798 | } else if (tid > req->r_tid) { | |
799 | n = n->rb_right; | |
800 | } else { | |
801 | return req; | |
802 | } | |
803 | } | |
804 | return NULL; | |
805 | } | |
806 | ||
6f6c7006 SW |
807 | /* |
808 | * Resubmit requests pending on the given osd. | |
809 | */ | |
810 | static void __kick_osd_requests(struct ceph_osd_client *osdc, | |
811 | struct ceph_osd *osd) | |
812 | { | |
a40c4f10 | 813 | struct ceph_osd_request *req, *nreq; |
e02493c0 | 814 | LIST_HEAD(resend); |
6f6c7006 SW |
815 | int err; |
816 | ||
817 | dout("__kick_osd_requests osd%d\n", osd->o_osd); | |
818 | err = __reset_osd(osdc, osd); | |
685a7555 | 819 | if (err) |
6f6c7006 | 820 | return; |
e02493c0 AE |
821 | /* |
822 | * Build up a list of requests to resend by traversing the | |
823 | * osd's list of requests. Requests for a given object are | |
824 | * sent in tid order, and that is also the order they're | |
825 | * kept on this list. Therefore all requests that are in | |
826 | * flight will be found first, followed by all requests that | |
827 | * have not yet been sent. And to resend requests while | |
828 | * preserving this order we will want to put any sent | |
829 | * requests back on the front of the osd client's unsent | |
830 | * list. | |
831 | * | |
832 | * So we build a separate ordered list of already-sent | |
833 | * requests for the affected osd and splice it onto the | |
834 | * front of the osd client's unsent list. Once we've seen a | |
835 | * request that has not yet been sent we're done. Those | |
836 | * requests are already sitting right where they belong. | |
837 | */ | |
6f6c7006 | 838 | list_for_each_entry(req, &osd->o_requests, r_osd_item) { |
e02493c0 AE |
839 | if (!req->r_sent) |
840 | break; | |
841 | list_move_tail(&req->r_req_lru_item, &resend); | |
842 | dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, | |
6f6c7006 | 843 | osd->o_osd); |
a40c4f10 YS |
844 | if (!req->r_linger) |
845 | req->r_flags |= CEPH_OSD_FLAG_RETRY; | |
846 | } | |
e02493c0 | 847 | list_splice(&resend, &osdc->req_unsent); |
a40c4f10 | 848 | |
e02493c0 AE |
849 | /* |
850 | * Linger requests are re-registered before sending, which | |
851 | * sets up a new tid for each. We add them to the unsent | |
852 | * list at the end to keep things in tid order. | |
853 | */ | |
a40c4f10 YS |
854 | list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, |
855 | r_linger_osd) { | |
77f38e0e SW |
856 | /* |
857 | * reregister request prior to unregistering linger so | |
858 | * that r_osd is preserved. | |
859 | */ | |
860 | BUG_ON(!list_empty(&req->r_req_lru_item)); | |
a40c4f10 | 861 | __register_request(osdc, req); |
e02493c0 | 862 | list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); |
ad885927 | 863 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); |
77f38e0e | 864 | __unregister_linger_request(osdc, req); |
a40c4f10 YS |
865 | dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, |
866 | osd->o_osd); | |
6f6c7006 SW |
867 | } |
868 | } | |
869 | ||
f24e9980 | 870 | /* |
81b024e7 | 871 | * If the osd connection drops, we need to resubmit all requests. |
f24e9980 SW |
872 | */ |
873 | static void osd_reset(struct ceph_connection *con) | |
874 | { | |
875 | struct ceph_osd *osd = con->private; | |
876 | struct ceph_osd_client *osdc; | |
877 | ||
878 | if (!osd) | |
879 | return; | |
880 | dout("osd_reset osd%d\n", osd->o_osd); | |
881 | osdc = osd->o_osdc; | |
f24e9980 | 882 | down_read(&osdc->map_sem); |
83aff95e SW |
883 | mutex_lock(&osdc->request_mutex); |
884 | __kick_osd_requests(osdc, osd); | |
f9d25199 | 885 | __send_queued(osdc); |
83aff95e | 886 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
887 | up_read(&osdc->map_sem); |
888 | } | |
889 | ||
890 | /* | |
891 | * Track open sessions with osds. | |
892 | */ | |
e10006f8 | 893 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
894 | { |
895 | struct ceph_osd *osd; | |
896 | ||
897 | osd = kzalloc(sizeof(*osd), GFP_NOFS); | |
898 | if (!osd) | |
899 | return NULL; | |
900 | ||
901 | atomic_set(&osd->o_ref, 1); | |
902 | osd->o_osdc = osdc; | |
e10006f8 | 903 | osd->o_osd = onum; |
f407731d | 904 | RB_CLEAR_NODE(&osd->o_node); |
f24e9980 | 905 | INIT_LIST_HEAD(&osd->o_requests); |
a40c4f10 | 906 | INIT_LIST_HEAD(&osd->o_linger_requests); |
f5a2041b | 907 | INIT_LIST_HEAD(&osd->o_osd_lru); |
f24e9980 SW |
908 | osd->o_incarnation = 1; |
909 | ||
b7a9e5dd | 910 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 911 | |
422d2cb8 | 912 | INIT_LIST_HEAD(&osd->o_keepalive_item); |
f24e9980 SW |
913 | return osd; |
914 | } | |
915 | ||
916 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
917 | { | |
918 | if (atomic_inc_not_zero(&osd->o_ref)) { | |
919 | dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, | |
920 | atomic_read(&osd->o_ref)); | |
921 | return osd; | |
922 | } else { | |
923 | dout("get_osd %p FAIL\n", osd); | |
924 | return NULL; | |
925 | } | |
926 | } | |
927 | ||
928 | static void put_osd(struct ceph_osd *osd) | |
929 | { | |
930 | dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), | |
931 | atomic_read(&osd->o_ref) - 1); | |
a255651d | 932 | if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { |
79494d1b SW |
933 | struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; |
934 | ||
27859f97 | 935 | ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); |
f24e9980 | 936 | kfree(osd); |
79494d1b | 937 | } |
f24e9980 SW |
938 | } |
939 | ||
940 | /* | |
941 | * remove an osd from our map | |
942 | */ | |
f5a2041b | 943 | static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 944 | { |
f5a2041b | 945 | dout("__remove_osd %p\n", osd); |
f24e9980 SW |
946 | BUG_ON(!list_empty(&osd->o_requests)); |
947 | rb_erase(&osd->o_node, &osdc->osds); | |
f5a2041b | 948 | list_del_init(&osd->o_osd_lru); |
f24e9980 SW |
949 | ceph_con_close(&osd->o_con); |
950 | put_osd(osd); | |
951 | } | |
952 | ||
aca420bc SW |
953 | static void remove_all_osds(struct ceph_osd_client *osdc) |
954 | { | |
048a9d2d | 955 | dout("%s %p\n", __func__, osdc); |
aca420bc SW |
956 | mutex_lock(&osdc->request_mutex); |
957 | while (!RB_EMPTY_ROOT(&osdc->osds)) { | |
958 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
959 | struct ceph_osd, o_node); | |
960 | __remove_osd(osdc, osd); | |
961 | } | |
962 | mutex_unlock(&osdc->request_mutex); | |
963 | } | |
964 | ||
f5a2041b YS |
965 | static void __move_osd_to_lru(struct ceph_osd_client *osdc, |
966 | struct ceph_osd *osd) | |
967 | { | |
968 | dout("__move_osd_to_lru %p\n", osd); | |
969 | BUG_ON(!list_empty(&osd->o_osd_lru)); | |
970 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); | |
3d14c5d2 | 971 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; |
f5a2041b YS |
972 | } |
973 | ||
974 | static void __remove_osd_from_lru(struct ceph_osd *osd) | |
975 | { | |
976 | dout("__remove_osd_from_lru %p\n", osd); | |
977 | if (!list_empty(&osd->o_osd_lru)) | |
978 | list_del_init(&osd->o_osd_lru); | |
979 | } | |
980 | ||
aca420bc | 981 | static void remove_old_osds(struct ceph_osd_client *osdc) |
f5a2041b YS |
982 | { |
983 | struct ceph_osd *osd, *nosd; | |
984 | ||
985 | dout("__remove_old_osds %p\n", osdc); | |
986 | mutex_lock(&osdc->request_mutex); | |
987 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { | |
aca420bc | 988 | if (time_before(jiffies, osd->lru_ttl)) |
f5a2041b YS |
989 | break; |
990 | __remove_osd(osdc, osd); | |
991 | } | |
992 | mutex_unlock(&osdc->request_mutex); | |
993 | } | |
994 | ||
f24e9980 SW |
995 | /* |
996 | * reset osd connect | |
997 | */ | |
f5a2041b | 998 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 999 | { |
c3acb181 | 1000 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 1001 | |
f5a2041b | 1002 | dout("__reset_osd %p osd%d\n", osd, osd->o_osd); |
a40c4f10 YS |
1003 | if (list_empty(&osd->o_requests) && |
1004 | list_empty(&osd->o_linger_requests)) { | |
f5a2041b | 1005 | __remove_osd(osdc, osd); |
c3acb181 AE |
1006 | |
1007 | return -ENODEV; | |
1008 | } | |
1009 | ||
1010 | peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; | |
1011 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && | |
1012 | !ceph_con_opened(&osd->o_con)) { | |
1013 | struct ceph_osd_request *req; | |
1014 | ||
87b315a5 SW |
1015 | dout(" osd addr hasn't changed and connection never opened," |
1016 | " letting msgr retry"); | |
1017 | /* touch each r_stamp for handle_timeout()'s benfit */ | |
1018 | list_for_each_entry(req, &osd->o_requests, r_osd_item) | |
1019 | req->r_stamp = jiffies; | |
c3acb181 AE |
1020 | |
1021 | return -EAGAIN; | |
f24e9980 | 1022 | } |
c3acb181 AE |
1023 | |
1024 | ceph_con_close(&osd->o_con); | |
1025 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
1026 | osd->o_incarnation++; | |
1027 | ||
1028 | return 0; | |
f24e9980 SW |
1029 | } |
1030 | ||
1031 | static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) | |
1032 | { | |
1033 | struct rb_node **p = &osdc->osds.rb_node; | |
1034 | struct rb_node *parent = NULL; | |
1035 | struct ceph_osd *osd = NULL; | |
1036 | ||
aca420bc | 1037 | dout("__insert_osd %p osd%d\n", new, new->o_osd); |
f24e9980 SW |
1038 | while (*p) { |
1039 | parent = *p; | |
1040 | osd = rb_entry(parent, struct ceph_osd, o_node); | |
1041 | if (new->o_osd < osd->o_osd) | |
1042 | p = &(*p)->rb_left; | |
1043 | else if (new->o_osd > osd->o_osd) | |
1044 | p = &(*p)->rb_right; | |
1045 | else | |
1046 | BUG(); | |
1047 | } | |
1048 | ||
1049 | rb_link_node(&new->o_node, parent, p); | |
1050 | rb_insert_color(&new->o_node, &osdc->osds); | |
1051 | } | |
1052 | ||
1053 | static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) | |
1054 | { | |
1055 | struct ceph_osd *osd; | |
1056 | struct rb_node *n = osdc->osds.rb_node; | |
1057 | ||
1058 | while (n) { | |
1059 | osd = rb_entry(n, struct ceph_osd, o_node); | |
1060 | if (o < osd->o_osd) | |
1061 | n = n->rb_left; | |
1062 | else if (o > osd->o_osd) | |
1063 | n = n->rb_right; | |
1064 | else | |
1065 | return osd; | |
1066 | } | |
1067 | return NULL; | |
1068 | } | |
1069 | ||
422d2cb8 YS |
1070 | static void __schedule_osd_timeout(struct ceph_osd_client *osdc) |
1071 | { | |
1072 | schedule_delayed_work(&osdc->timeout_work, | |
3d14c5d2 | 1073 | osdc->client->options->osd_keepalive_timeout * HZ); |
422d2cb8 YS |
1074 | } |
1075 | ||
1076 | static void __cancel_osd_timeout(struct ceph_osd_client *osdc) | |
1077 | { | |
1078 | cancel_delayed_work(&osdc->timeout_work); | |
1079 | } | |
f24e9980 SW |
1080 | |
1081 | /* | |
1082 | * Register request, assign tid. If this is the first request, set up | |
1083 | * the timeout event. | |
1084 | */ | |
a40c4f10 YS |
1085 | static void __register_request(struct ceph_osd_client *osdc, |
1086 | struct ceph_osd_request *req) | |
f24e9980 | 1087 | { |
f24e9980 | 1088 | req->r_tid = ++osdc->last_tid; |
6df058c0 | 1089 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); |
77f38e0e | 1090 | dout("__register_request %p tid %lld\n", req, req->r_tid); |
f24e9980 SW |
1091 | __insert_request(osdc, req); |
1092 | ceph_osdc_get_request(req); | |
1093 | osdc->num_requests++; | |
f24e9980 | 1094 | if (osdc->num_requests == 1) { |
422d2cb8 YS |
1095 | dout(" first request, scheduling timeout\n"); |
1096 | __schedule_osd_timeout(osdc); | |
f24e9980 | 1097 | } |
a40c4f10 YS |
1098 | } |
1099 | ||
f24e9980 SW |
1100 | /* |
1101 | * called under osdc->request_mutex | |
1102 | */ | |
1103 | static void __unregister_request(struct ceph_osd_client *osdc, | |
1104 | struct ceph_osd_request *req) | |
1105 | { | |
35f9f8a0 SW |
1106 | if (RB_EMPTY_NODE(&req->r_node)) { |
1107 | dout("__unregister_request %p tid %lld not registered\n", | |
1108 | req, req->r_tid); | |
1109 | return; | |
1110 | } | |
1111 | ||
f24e9980 SW |
1112 | dout("__unregister_request %p tid %lld\n", req, req->r_tid); |
1113 | rb_erase(&req->r_node, &osdc->requests); | |
1114 | osdc->num_requests--; | |
1115 | ||
0ba6478d SW |
1116 | if (req->r_osd) { |
1117 | /* make sure the original request isn't in flight. */ | |
6740a845 | 1118 | ceph_msg_revoke(req->r_request); |
0ba6478d SW |
1119 | |
1120 | list_del_init(&req->r_osd_item); | |
a40c4f10 YS |
1121 | if (list_empty(&req->r_osd->o_requests) && |
1122 | list_empty(&req->r_osd->o_linger_requests)) { | |
1123 | dout("moving osd to %p lru\n", req->r_osd); | |
f5a2041b | 1124 | __move_osd_to_lru(osdc, req->r_osd); |
a40c4f10 | 1125 | } |
fbdb9190 | 1126 | if (list_empty(&req->r_linger_item)) |
a40c4f10 | 1127 | req->r_osd = NULL; |
0ba6478d | 1128 | } |
f24e9980 | 1129 | |
7d5f2481 | 1130 | list_del_init(&req->r_req_lru_item); |
f24e9980 SW |
1131 | ceph_osdc_put_request(req); |
1132 | ||
422d2cb8 YS |
1133 | if (osdc->num_requests == 0) { |
1134 | dout(" no requests, canceling timeout\n"); | |
1135 | __cancel_osd_timeout(osdc); | |
f24e9980 SW |
1136 | } |
1137 | } | |
1138 | ||
1139 | /* | |
1140 | * Cancel a previously queued request message | |
1141 | */ | |
1142 | static void __cancel_request(struct ceph_osd_request *req) | |
1143 | { | |
6bc18876 | 1144 | if (req->r_sent && req->r_osd) { |
6740a845 | 1145 | ceph_msg_revoke(req->r_request); |
f24e9980 SW |
1146 | req->r_sent = 0; |
1147 | } | |
1148 | } | |
1149 | ||
a40c4f10 YS |
1150 | static void __register_linger_request(struct ceph_osd_client *osdc, |
1151 | struct ceph_osd_request *req) | |
1152 | { | |
1153 | dout("__register_linger_request %p\n", req); | |
1154 | list_add_tail(&req->r_linger_item, &osdc->req_linger); | |
6194ea89 SW |
1155 | if (req->r_osd) |
1156 | list_add_tail(&req->r_linger_osd, | |
1157 | &req->r_osd->o_linger_requests); | |
a40c4f10 YS |
1158 | } |
1159 | ||
1160 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
1161 | struct ceph_osd_request *req) | |
1162 | { | |
1163 | dout("__unregister_linger_request %p\n", req); | |
61c74035 | 1164 | list_del_init(&req->r_linger_item); |
a40c4f10 | 1165 | if (req->r_osd) { |
a40c4f10 YS |
1166 | list_del_init(&req->r_linger_osd); |
1167 | ||
1168 | if (list_empty(&req->r_osd->o_requests) && | |
1169 | list_empty(&req->r_osd->o_linger_requests)) { | |
1170 | dout("moving osd to %p lru\n", req->r_osd); | |
1171 | __move_osd_to_lru(osdc, req->r_osd); | |
1172 | } | |
fbdb9190 SW |
1173 | if (list_empty(&req->r_osd_item)) |
1174 | req->r_osd = NULL; | |
a40c4f10 YS |
1175 | } |
1176 | } | |
1177 | ||
1178 | void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, | |
1179 | struct ceph_osd_request *req) | |
1180 | { | |
1181 | mutex_lock(&osdc->request_mutex); | |
1182 | if (req->r_linger) { | |
1183 | __unregister_linger_request(osdc, req); | |
1184 | ceph_osdc_put_request(req); | |
1185 | } | |
1186 | mutex_unlock(&osdc->request_mutex); | |
1187 | } | |
1188 | EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); | |
1189 | ||
1190 | void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, | |
1191 | struct ceph_osd_request *req) | |
1192 | { | |
1193 | if (!req->r_linger) { | |
1194 | dout("set_request_linger %p\n", req); | |
1195 | req->r_linger = 1; | |
1196 | /* | |
1197 | * caller is now responsible for calling | |
1198 | * unregister_linger_request | |
1199 | */ | |
1200 | ceph_osdc_get_request(req); | |
1201 | } | |
1202 | } | |
1203 | EXPORT_SYMBOL(ceph_osdc_set_request_linger); | |
1204 | ||
f24e9980 SW |
1205 | /* |
1206 | * Pick an osd (the first 'up' osd in the pg), allocate the osd struct | |
1207 | * (as needed), and set the request r_osd appropriately. If there is | |
25985edc | 1208 | * no up osd, set r_osd to NULL. Move the request to the appropriate list |
6f6c7006 | 1209 | * (unsent, homeless) or leave on in-flight lru. |
f24e9980 SW |
1210 | * |
1211 | * Return 0 if unchanged, 1 if changed, or negative on error. | |
1212 | * | |
1213 | * Caller should hold map_sem for read and request_mutex. | |
1214 | */ | |
6f6c7006 | 1215 | static int __map_request(struct ceph_osd_client *osdc, |
38d6453c | 1216 | struct ceph_osd_request *req, int force_resend) |
f24e9980 | 1217 | { |
5b191d99 | 1218 | struct ceph_pg pgid; |
d85b7056 SW |
1219 | int acting[CEPH_PG_MAX_SIZE]; |
1220 | int o = -1, num = 0; | |
f24e9980 | 1221 | int err; |
f24e9980 | 1222 | |
6f6c7006 | 1223 | dout("map_request %p tid %lld\n", req, req->r_tid); |
41766f87 AE |
1224 | err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, |
1225 | ceph_file_layout_pg_pool(req->r_file_layout)); | |
6f6c7006 SW |
1226 | if (err) { |
1227 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f24e9980 | 1228 | return err; |
6f6c7006 | 1229 | } |
7740a42f SW |
1230 | req->r_pgid = pgid; |
1231 | ||
d85b7056 SW |
1232 | err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); |
1233 | if (err > 0) { | |
1234 | o = acting[0]; | |
1235 | num = err; | |
1236 | } | |
f24e9980 | 1237 | |
38d6453c SW |
1238 | if ((!force_resend && |
1239 | req->r_osd && req->r_osd->o_osd == o && | |
d85b7056 SW |
1240 | req->r_sent >= req->r_osd->o_incarnation && |
1241 | req->r_num_pg_osds == num && | |
1242 | memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || | |
f24e9980 SW |
1243 | (req->r_osd == NULL && o == -1)) |
1244 | return 0; /* no change */ | |
1245 | ||
5b191d99 SW |
1246 | dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", |
1247 | req->r_tid, pgid.pool, pgid.seed, o, | |
f24e9980 SW |
1248 | req->r_osd ? req->r_osd->o_osd : -1); |
1249 | ||
d85b7056 SW |
1250 | /* record full pg acting set */ |
1251 | memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); | |
1252 | req->r_num_pg_osds = num; | |
1253 | ||
f24e9980 SW |
1254 | if (req->r_osd) { |
1255 | __cancel_request(req); | |
1256 | list_del_init(&req->r_osd_item); | |
f24e9980 SW |
1257 | req->r_osd = NULL; |
1258 | } | |
1259 | ||
1260 | req->r_osd = __lookup_osd(osdc, o); | |
1261 | if (!req->r_osd && o >= 0) { | |
c99eb1c7 | 1262 | err = -ENOMEM; |
e10006f8 | 1263 | req->r_osd = create_osd(osdc, o); |
6f6c7006 SW |
1264 | if (!req->r_osd) { |
1265 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
c99eb1c7 | 1266 | goto out; |
6f6c7006 | 1267 | } |
f24e9980 | 1268 | |
6f6c7006 | 1269 | dout("map_request osd %p is osd%d\n", req->r_osd, o); |
f24e9980 SW |
1270 | __insert_osd(osdc, req->r_osd); |
1271 | ||
b7a9e5dd SW |
1272 | ceph_con_open(&req->r_osd->o_con, |
1273 | CEPH_ENTITY_TYPE_OSD, o, | |
1274 | &osdc->osdmap->osd_addr[o]); | |
f24e9980 SW |
1275 | } |
1276 | ||
f5a2041b YS |
1277 | if (req->r_osd) { |
1278 | __remove_osd_from_lru(req->r_osd); | |
ad885927 AE |
1279 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); |
1280 | list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); | |
6f6c7006 | 1281 | } else { |
ad885927 | 1282 | list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); |
f5a2041b | 1283 | } |
d85b7056 | 1284 | err = 1; /* osd or pg changed */ |
f24e9980 SW |
1285 | |
1286 | out: | |
f24e9980 SW |
1287 | return err; |
1288 | } | |
1289 | ||
1290 | /* | |
1291 | * caller should hold map_sem (for read) and request_mutex | |
1292 | */ | |
56e925b6 SW |
1293 | static void __send_request(struct ceph_osd_client *osdc, |
1294 | struct ceph_osd_request *req) | |
f24e9980 | 1295 | { |
1b83bef2 | 1296 | void *p; |
f24e9980 | 1297 | |
1b83bef2 SW |
1298 | dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", |
1299 | req, req->r_tid, req->r_osd->o_osd, req->r_flags, | |
1300 | (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); | |
1301 | ||
1302 | /* fill in message content that changes each time we send it */ | |
1303 | put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); | |
1304 | put_unaligned_le32(req->r_flags, req->r_request_flags); | |
1305 | put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); | |
1306 | p = req->r_request_pgid; | |
1307 | ceph_encode_64(&p, req->r_pgid.pool); | |
1308 | ceph_encode_32(&p, req->r_pgid.seed); | |
1309 | put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ | |
1310 | memcpy(req->r_request_reassert_version, &req->r_reassert_version, | |
1311 | sizeof(req->r_reassert_version)); | |
2169aea6 | 1312 | |
3dd72fc0 | 1313 | req->r_stamp = jiffies; |
07a27e22 | 1314 | list_move_tail(&req->r_req_lru_item, &osdc->req_lru); |
f24e9980 SW |
1315 | |
1316 | ceph_msg_get(req->r_request); /* send consumes a ref */ | |
26be8808 AE |
1317 | |
1318 | /* Mark the request unsafe if this is the first timet's being sent. */ | |
1319 | ||
1320 | if (!req->r_sent && req->r_unsafe_callback) | |
1321 | req->r_unsafe_callback(req, true); | |
f24e9980 | 1322 | req->r_sent = req->r_osd->o_incarnation; |
26be8808 AE |
1323 | |
1324 | ceph_con_send(&req->r_osd->o_con, req->r_request); | |
f24e9980 SW |
1325 | } |
1326 | ||
6f6c7006 SW |
1327 | /* |
1328 | * Send any requests in the queue (req_unsent). | |
1329 | */ | |
f9d25199 | 1330 | static void __send_queued(struct ceph_osd_client *osdc) |
6f6c7006 SW |
1331 | { |
1332 | struct ceph_osd_request *req, *tmp; | |
1333 | ||
f9d25199 AE |
1334 | dout("__send_queued\n"); |
1335 | list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) | |
6f6c7006 | 1336 | __send_request(osdc, req); |
6f6c7006 SW |
1337 | } |
1338 | ||
f24e9980 SW |
1339 | /* |
1340 | * Timeout callback, called every N seconds when 1 or more osd | |
1341 | * requests has been active for more than N seconds. When this | |
1342 | * happens, we ping all OSDs with requests who have timed out to | |
1343 | * ensure any communications channel reset is detected. Reset the | |
1344 | * request timeouts another N seconds in the future as we go. | |
1345 | * Reschedule the timeout event another N seconds in future (unless | |
1346 | * there are no open requests). | |
1347 | */ | |
1348 | static void handle_timeout(struct work_struct *work) | |
1349 | { | |
1350 | struct ceph_osd_client *osdc = | |
1351 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
83aff95e | 1352 | struct ceph_osd_request *req; |
f24e9980 | 1353 | struct ceph_osd *osd; |
422d2cb8 | 1354 | unsigned long keepalive = |
3d14c5d2 | 1355 | osdc->client->options->osd_keepalive_timeout * HZ; |
422d2cb8 | 1356 | struct list_head slow_osds; |
f24e9980 SW |
1357 | dout("timeout\n"); |
1358 | down_read(&osdc->map_sem); | |
1359 | ||
1360 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1361 | ||
1362 | mutex_lock(&osdc->request_mutex); | |
f24e9980 | 1363 | |
422d2cb8 YS |
1364 | /* |
1365 | * ping osds that are a bit slow. this ensures that if there | |
1366 | * is a break in the TCP connection we will notice, and reopen | |
1367 | * a connection with that osd (from the fault callback). | |
1368 | */ | |
1369 | INIT_LIST_HEAD(&slow_osds); | |
1370 | list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { | |
3dd72fc0 | 1371 | if (time_before(jiffies, req->r_stamp + keepalive)) |
422d2cb8 YS |
1372 | break; |
1373 | ||
1374 | osd = req->r_osd; | |
1375 | BUG_ON(!osd); | |
1376 | dout(" tid %llu is slow, will send keepalive on osd%d\n", | |
f24e9980 | 1377 | req->r_tid, osd->o_osd); |
422d2cb8 YS |
1378 | list_move_tail(&osd->o_keepalive_item, &slow_osds); |
1379 | } | |
1380 | while (!list_empty(&slow_osds)) { | |
1381 | osd = list_entry(slow_osds.next, struct ceph_osd, | |
1382 | o_keepalive_item); | |
1383 | list_del_init(&osd->o_keepalive_item); | |
f24e9980 SW |
1384 | ceph_con_keepalive(&osd->o_con); |
1385 | } | |
1386 | ||
422d2cb8 | 1387 | __schedule_osd_timeout(osdc); |
f9d25199 | 1388 | __send_queued(osdc); |
f24e9980 | 1389 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1390 | up_read(&osdc->map_sem); |
1391 | } | |
1392 | ||
f5a2041b YS |
1393 | static void handle_osds_timeout(struct work_struct *work) |
1394 | { | |
1395 | struct ceph_osd_client *osdc = | |
1396 | container_of(work, struct ceph_osd_client, | |
1397 | osds_timeout_work.work); | |
1398 | unsigned long delay = | |
3d14c5d2 | 1399 | osdc->client->options->osd_idle_ttl * HZ >> 2; |
f5a2041b YS |
1400 | |
1401 | dout("osds timeout\n"); | |
1402 | down_read(&osdc->map_sem); | |
aca420bc | 1403 | remove_old_osds(osdc); |
f5a2041b YS |
1404 | up_read(&osdc->map_sem); |
1405 | ||
1406 | schedule_delayed_work(&osdc->osds_timeout_work, | |
1407 | round_jiffies_relative(delay)); | |
1408 | } | |
1409 | ||
25845472 SW |
1410 | static void complete_request(struct ceph_osd_request *req) |
1411 | { | |
26be8808 AE |
1412 | if (req->r_unsafe_callback) |
1413 | req->r_unsafe_callback(req, false); | |
25845472 SW |
1414 | complete_all(&req->r_safe_completion); /* fsync waiter */ |
1415 | } | |
1416 | ||
f24e9980 SW |
1417 | /* |
1418 | * handle osd op reply. either call the callback if it is specified, | |
1419 | * or do the completion to wake up the waiting thread. | |
1420 | */ | |
350b1c32 SW |
1421 | static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, |
1422 | struct ceph_connection *con) | |
f24e9980 | 1423 | { |
1b83bef2 | 1424 | void *p, *end; |
f24e9980 SW |
1425 | struct ceph_osd_request *req; |
1426 | u64 tid; | |
1b83bef2 | 1427 | int object_len; |
79528734 AE |
1428 | unsigned int numops; |
1429 | int payload_len, flags; | |
0ceed5db | 1430 | s32 result; |
1b83bef2 SW |
1431 | s32 retry_attempt; |
1432 | struct ceph_pg pg; | |
1433 | int err; | |
1434 | u32 reassert_epoch; | |
1435 | u64 reassert_version; | |
1436 | u32 osdmap_epoch; | |
0d5af164 | 1437 | int already_completed; |
9fc6e064 | 1438 | u32 bytes; |
79528734 | 1439 | unsigned int i; |
f24e9980 | 1440 | |
6df058c0 | 1441 | tid = le64_to_cpu(msg->hdr.tid); |
1b83bef2 SW |
1442 | dout("handle_reply %p tid %llu\n", msg, tid); |
1443 | ||
1444 | p = msg->front.iov_base; | |
1445 | end = p + msg->front.iov_len; | |
1446 | ||
1447 | ceph_decode_need(&p, end, 4, bad); | |
1448 | object_len = ceph_decode_32(&p); | |
1449 | ceph_decode_need(&p, end, object_len, bad); | |
1450 | p += object_len; | |
1451 | ||
ef4859d6 | 1452 | err = ceph_decode_pgid(&p, end, &pg); |
1b83bef2 | 1453 | if (err) |
f24e9980 | 1454 | goto bad; |
1b83bef2 SW |
1455 | |
1456 | ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); | |
1457 | flags = ceph_decode_64(&p); | |
1458 | result = ceph_decode_32(&p); | |
1459 | reassert_epoch = ceph_decode_32(&p); | |
1460 | reassert_version = ceph_decode_64(&p); | |
1461 | osdmap_epoch = ceph_decode_32(&p); | |
1462 | ||
f24e9980 SW |
1463 | /* lookup */ |
1464 | mutex_lock(&osdc->request_mutex); | |
1465 | req = __lookup_request(osdc, tid); | |
1466 | if (req == NULL) { | |
1467 | dout("handle_reply tid %llu dne\n", tid); | |
8058fd45 | 1468 | goto bad_mutex; |
f24e9980 SW |
1469 | } |
1470 | ceph_osdc_get_request(req); | |
1b83bef2 SW |
1471 | |
1472 | dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, | |
1473 | req, result); | |
1474 | ||
1475 | ceph_decode_need(&p, end, 4, bad); | |
1476 | numops = ceph_decode_32(&p); | |
1477 | if (numops > CEPH_OSD_MAX_OP) | |
1478 | goto bad_put; | |
1479 | if (numops != req->r_num_ops) | |
1480 | goto bad_put; | |
1481 | payload_len = 0; | |
1482 | ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); | |
1483 | for (i = 0; i < numops; i++) { | |
1484 | struct ceph_osd_op *op = p; | |
1485 | int len; | |
1486 | ||
1487 | len = le32_to_cpu(op->payload_len); | |
1488 | req->r_reply_op_len[i] = len; | |
1489 | dout(" op %d has %d bytes\n", i, len); | |
1490 | payload_len += len; | |
1491 | p += sizeof(*op); | |
1492 | } | |
9fc6e064 AE |
1493 | bytes = le32_to_cpu(msg->hdr.data_len); |
1494 | if (payload_len != bytes) { | |
1b83bef2 | 1495 | pr_warning("sum of op payload lens %d != data_len %d", |
9fc6e064 | 1496 | payload_len, bytes); |
1b83bef2 SW |
1497 | goto bad_put; |
1498 | } | |
1499 | ||
1500 | ceph_decode_need(&p, end, 4 + numops * 4, bad); | |
1501 | retry_attempt = ceph_decode_32(&p); | |
1502 | for (i = 0; i < numops; i++) | |
1503 | req->r_reply_op_result[i] = ceph_decode_32(&p); | |
f24e9980 | 1504 | |
f24e9980 | 1505 | if (!req->r_got_reply) { |
f24e9980 | 1506 | |
1b83bef2 | 1507 | req->r_result = result; |
f24e9980 SW |
1508 | dout("handle_reply result %d bytes %d\n", req->r_result, |
1509 | bytes); | |
1510 | if (req->r_result == 0) | |
1511 | req->r_result = bytes; | |
1512 | ||
1513 | /* in case this is a write and we need to replay, */ | |
1b83bef2 SW |
1514 | req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); |
1515 | req->r_reassert_version.version = cpu_to_le64(reassert_version); | |
f24e9980 SW |
1516 | |
1517 | req->r_got_reply = 1; | |
1518 | } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { | |
1519 | dout("handle_reply tid %llu dup ack\n", tid); | |
34b43a56 | 1520 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1521 | goto done; |
1522 | } | |
1523 | ||
1524 | dout("handle_reply tid %llu flags %d\n", tid, flags); | |
1525 | ||
a40c4f10 YS |
1526 | if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) |
1527 | __register_linger_request(osdc, req); | |
1528 | ||
f24e9980 | 1529 | /* either this is a read, or we got the safe response */ |
0ceed5db SW |
1530 | if (result < 0 || |
1531 | (flags & CEPH_OSD_FLAG_ONDISK) || | |
f24e9980 SW |
1532 | ((flags & CEPH_OSD_FLAG_WRITE) == 0)) |
1533 | __unregister_request(osdc, req); | |
1534 | ||
0d5af164 AE |
1535 | already_completed = req->r_completed; |
1536 | req->r_completed = 1; | |
f24e9980 | 1537 | mutex_unlock(&osdc->request_mutex); |
0d5af164 AE |
1538 | if (already_completed) |
1539 | goto done; | |
f24e9980 SW |
1540 | |
1541 | if (req->r_callback) | |
1542 | req->r_callback(req, msg); | |
1543 | else | |
03066f23 | 1544 | complete_all(&req->r_completion); |
f24e9980 | 1545 | |
25845472 SW |
1546 | if (flags & CEPH_OSD_FLAG_ONDISK) |
1547 | complete_request(req); | |
f24e9980 SW |
1548 | |
1549 | done: | |
a40c4f10 | 1550 | dout("req=%p req->r_linger=%d\n", req, req->r_linger); |
f24e9980 SW |
1551 | ceph_osdc_put_request(req); |
1552 | return; | |
1553 | ||
1b83bef2 SW |
1554 | bad_put: |
1555 | ceph_osdc_put_request(req); | |
8058fd45 AE |
1556 | bad_mutex: |
1557 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 1558 | bad: |
1b83bef2 SW |
1559 | pr_err("corrupt osd_op_reply got %d %d\n", |
1560 | (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); | |
9ec7cab1 | 1561 | ceph_msg_dump(msg); |
f24e9980 SW |
1562 | } |
1563 | ||
6f6c7006 | 1564 | static void reset_changed_osds(struct ceph_osd_client *osdc) |
f24e9980 | 1565 | { |
f24e9980 | 1566 | struct rb_node *p, *n; |
f24e9980 | 1567 | |
6f6c7006 SW |
1568 | for (p = rb_first(&osdc->osds); p; p = n) { |
1569 | struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); | |
f24e9980 | 1570 | |
6f6c7006 SW |
1571 | n = rb_next(p); |
1572 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
1573 | memcmp(&osd->o_con.peer_addr, | |
1574 | ceph_osd_addr(osdc->osdmap, | |
1575 | osd->o_osd), | |
1576 | sizeof(struct ceph_entity_addr)) != 0) | |
1577 | __reset_osd(osdc, osd); | |
f24e9980 | 1578 | } |
422d2cb8 YS |
1579 | } |
1580 | ||
1581 | /* | |
6f6c7006 SW |
1582 | * Requeue requests whose mapping to an OSD has changed. If requests map to |
1583 | * no osd, request a new map. | |
422d2cb8 | 1584 | * |
e6d50f67 | 1585 | * Caller should hold map_sem for read. |
422d2cb8 | 1586 | */ |
38d6453c | 1587 | static void kick_requests(struct ceph_osd_client *osdc, int force_resend) |
422d2cb8 | 1588 | { |
a40c4f10 | 1589 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
1590 | struct rb_node *p; |
1591 | int needmap = 0; | |
1592 | int err; | |
422d2cb8 | 1593 | |
38d6453c | 1594 | dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); |
422d2cb8 | 1595 | mutex_lock(&osdc->request_mutex); |
6194ea89 | 1596 | for (p = rb_first(&osdc->requests); p; ) { |
6f6c7006 | 1597 | req = rb_entry(p, struct ceph_osd_request, r_node); |
6194ea89 | 1598 | p = rb_next(p); |
ab60b16d AE |
1599 | |
1600 | /* | |
1601 | * For linger requests that have not yet been | |
1602 | * registered, move them to the linger list; they'll | |
1603 | * be sent to the osd in the loop below. Unregister | |
1604 | * the request before re-registering it as a linger | |
1605 | * request to ensure the __map_request() below | |
1606 | * will decide it needs to be sent. | |
1607 | */ | |
1608 | if (req->r_linger && list_empty(&req->r_linger_item)) { | |
1609 | dout("%p tid %llu restart on osd%d\n", | |
1610 | req, req->r_tid, | |
1611 | req->r_osd ? req->r_osd->o_osd : -1); | |
1612 | __unregister_request(osdc, req); | |
1613 | __register_linger_request(osdc, req); | |
1614 | continue; | |
1615 | } | |
1616 | ||
38d6453c | 1617 | err = __map_request(osdc, req, force_resend); |
6f6c7006 SW |
1618 | if (err < 0) |
1619 | continue; /* error */ | |
1620 | if (req->r_osd == NULL) { | |
1621 | dout("%p tid %llu maps to no osd\n", req, req->r_tid); | |
1622 | needmap++; /* request a newer map */ | |
1623 | } else if (err > 0) { | |
6194ea89 SW |
1624 | if (!req->r_linger) { |
1625 | dout("%p tid %llu requeued on osd%d\n", req, | |
1626 | req->r_tid, | |
1627 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1628 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
6194ea89 SW |
1629 | } |
1630 | } | |
a40c4f10 YS |
1631 | } |
1632 | ||
1633 | list_for_each_entry_safe(req, nreq, &osdc->req_linger, | |
1634 | r_linger_item) { | |
1635 | dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); | |
1636 | ||
38d6453c | 1637 | err = __map_request(osdc, req, force_resend); |
ab60b16d | 1638 | dout("__map_request returned %d\n", err); |
a40c4f10 YS |
1639 | if (err == 0) |
1640 | continue; /* no change and no osd was specified */ | |
1641 | if (err < 0) | |
1642 | continue; /* hrm! */ | |
1643 | if (req->r_osd == NULL) { | |
1644 | dout("tid %llu maps to no valid osd\n", req->r_tid); | |
1645 | needmap++; /* request a newer map */ | |
1646 | continue; | |
6f6c7006 | 1647 | } |
a40c4f10 YS |
1648 | |
1649 | dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, | |
1650 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1651 | __register_request(osdc, req); |
c89ce05e | 1652 | __unregister_linger_request(osdc, req); |
6f6c7006 | 1653 | } |
f24e9980 SW |
1654 | mutex_unlock(&osdc->request_mutex); |
1655 | ||
1656 | if (needmap) { | |
1657 | dout("%d requests for down osds, need new map\n", needmap); | |
1658 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1659 | } | |
e6d50f67 | 1660 | reset_changed_osds(osdc); |
422d2cb8 | 1661 | } |
6f6c7006 SW |
1662 | |
1663 | ||
f24e9980 SW |
1664 | /* |
1665 | * Process updated osd map. | |
1666 | * | |
1667 | * The message contains any number of incremental and full maps, normally | |
1668 | * indicating some sort of topology change in the cluster. Kick requests | |
1669 | * off to different OSDs as needed. | |
1670 | */ | |
1671 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
1672 | { | |
1673 | void *p, *end, *next; | |
1674 | u32 nr_maps, maplen; | |
1675 | u32 epoch; | |
1676 | struct ceph_osdmap *newmap = NULL, *oldmap; | |
1677 | int err; | |
1678 | struct ceph_fsid fsid; | |
1679 | ||
1680 | dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); | |
1681 | p = msg->front.iov_base; | |
1682 | end = p + msg->front.iov_len; | |
1683 | ||
1684 | /* verify fsid */ | |
1685 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
1686 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d SW |
1687 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
1688 | return; | |
f24e9980 SW |
1689 | |
1690 | down_write(&osdc->map_sem); | |
1691 | ||
1692 | /* incremental maps */ | |
1693 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1694 | dout(" %d inc maps\n", nr_maps); | |
1695 | while (nr_maps > 0) { | |
1696 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1697 | epoch = ceph_decode_32(&p); |
1698 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1699 | ceph_decode_need(&p, end, maplen, bad); |
1700 | next = p + maplen; | |
1701 | if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { | |
1702 | dout("applying incremental map %u len %d\n", | |
1703 | epoch, maplen); | |
1704 | newmap = osdmap_apply_incremental(&p, next, | |
1705 | osdc->osdmap, | |
15d9882c | 1706 | &osdc->client->msgr); |
f24e9980 SW |
1707 | if (IS_ERR(newmap)) { |
1708 | err = PTR_ERR(newmap); | |
1709 | goto bad; | |
1710 | } | |
30dc6381 | 1711 | BUG_ON(!newmap); |
f24e9980 SW |
1712 | if (newmap != osdc->osdmap) { |
1713 | ceph_osdmap_destroy(osdc->osdmap); | |
1714 | osdc->osdmap = newmap; | |
1715 | } | |
38d6453c | 1716 | kick_requests(osdc, 0); |
f24e9980 SW |
1717 | } else { |
1718 | dout("ignoring incremental map %u len %d\n", | |
1719 | epoch, maplen); | |
1720 | } | |
1721 | p = next; | |
1722 | nr_maps--; | |
1723 | } | |
1724 | if (newmap) | |
1725 | goto done; | |
1726 | ||
1727 | /* full maps */ | |
1728 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1729 | dout(" %d full maps\n", nr_maps); | |
1730 | while (nr_maps) { | |
1731 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1732 | epoch = ceph_decode_32(&p); |
1733 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1734 | ceph_decode_need(&p, end, maplen, bad); |
1735 | if (nr_maps > 1) { | |
1736 | dout("skipping non-latest full map %u len %d\n", | |
1737 | epoch, maplen); | |
1738 | } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { | |
1739 | dout("skipping full map %u len %d, " | |
1740 | "older than our %u\n", epoch, maplen, | |
1741 | osdc->osdmap->epoch); | |
1742 | } else { | |
38d6453c SW |
1743 | int skipped_map = 0; |
1744 | ||
f24e9980 SW |
1745 | dout("taking full map %u len %d\n", epoch, maplen); |
1746 | newmap = osdmap_decode(&p, p+maplen); | |
1747 | if (IS_ERR(newmap)) { | |
1748 | err = PTR_ERR(newmap); | |
1749 | goto bad; | |
1750 | } | |
30dc6381 | 1751 | BUG_ON(!newmap); |
f24e9980 SW |
1752 | oldmap = osdc->osdmap; |
1753 | osdc->osdmap = newmap; | |
38d6453c SW |
1754 | if (oldmap) { |
1755 | if (oldmap->epoch + 1 < newmap->epoch) | |
1756 | skipped_map = 1; | |
f24e9980 | 1757 | ceph_osdmap_destroy(oldmap); |
38d6453c SW |
1758 | } |
1759 | kick_requests(osdc, skipped_map); | |
f24e9980 SW |
1760 | } |
1761 | p += maplen; | |
1762 | nr_maps--; | |
1763 | } | |
1764 | ||
1765 | done: | |
1766 | downgrade_write(&osdc->map_sem); | |
1767 | ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); | |
cd634fb6 SW |
1768 | |
1769 | /* | |
1770 | * subscribe to subsequent osdmap updates if full to ensure | |
1771 | * we find out when we are no longer full and stop returning | |
1772 | * ENOSPC. | |
1773 | */ | |
1774 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) | |
1775 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1776 | ||
f9d25199 AE |
1777 | mutex_lock(&osdc->request_mutex); |
1778 | __send_queued(osdc); | |
1779 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 1780 | up_read(&osdc->map_sem); |
03066f23 | 1781 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
1782 | return; |
1783 | ||
1784 | bad: | |
1785 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 1786 | ceph_msg_dump(msg); |
f24e9980 SW |
1787 | up_write(&osdc->map_sem); |
1788 | return; | |
1789 | } | |
1790 | ||
a40c4f10 YS |
1791 | /* |
1792 | * watch/notify callback event infrastructure | |
1793 | * | |
1794 | * These callbacks are used both for watch and notify operations. | |
1795 | */ | |
1796 | static void __release_event(struct kref *kref) | |
1797 | { | |
1798 | struct ceph_osd_event *event = | |
1799 | container_of(kref, struct ceph_osd_event, kref); | |
1800 | ||
1801 | dout("__release_event %p\n", event); | |
1802 | kfree(event); | |
1803 | } | |
1804 | ||
1805 | static void get_event(struct ceph_osd_event *event) | |
1806 | { | |
1807 | kref_get(&event->kref); | |
1808 | } | |
1809 | ||
1810 | void ceph_osdc_put_event(struct ceph_osd_event *event) | |
1811 | { | |
1812 | kref_put(&event->kref, __release_event); | |
1813 | } | |
1814 | EXPORT_SYMBOL(ceph_osdc_put_event); | |
1815 | ||
1816 | static void __insert_event(struct ceph_osd_client *osdc, | |
1817 | struct ceph_osd_event *new) | |
1818 | { | |
1819 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1820 | struct rb_node *parent = NULL; | |
1821 | struct ceph_osd_event *event = NULL; | |
1822 | ||
1823 | while (*p) { | |
1824 | parent = *p; | |
1825 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1826 | if (new->cookie < event->cookie) | |
1827 | p = &(*p)->rb_left; | |
1828 | else if (new->cookie > event->cookie) | |
1829 | p = &(*p)->rb_right; | |
1830 | else | |
1831 | BUG(); | |
1832 | } | |
1833 | ||
1834 | rb_link_node(&new->node, parent, p); | |
1835 | rb_insert_color(&new->node, &osdc->event_tree); | |
1836 | } | |
1837 | ||
1838 | static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, | |
1839 | u64 cookie) | |
1840 | { | |
1841 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1842 | struct rb_node *parent = NULL; | |
1843 | struct ceph_osd_event *event = NULL; | |
1844 | ||
1845 | while (*p) { | |
1846 | parent = *p; | |
1847 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1848 | if (cookie < event->cookie) | |
1849 | p = &(*p)->rb_left; | |
1850 | else if (cookie > event->cookie) | |
1851 | p = &(*p)->rb_right; | |
1852 | else | |
1853 | return event; | |
1854 | } | |
1855 | return NULL; | |
1856 | } | |
1857 | ||
1858 | static void __remove_event(struct ceph_osd_event *event) | |
1859 | { | |
1860 | struct ceph_osd_client *osdc = event->osdc; | |
1861 | ||
1862 | if (!RB_EMPTY_NODE(&event->node)) { | |
1863 | dout("__remove_event removed %p\n", event); | |
1864 | rb_erase(&event->node, &osdc->event_tree); | |
1865 | ceph_osdc_put_event(event); | |
1866 | } else { | |
1867 | dout("__remove_event didn't remove %p\n", event); | |
1868 | } | |
1869 | } | |
1870 | ||
1871 | int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
1872 | void (*event_cb)(u64, u64, u8, void *), | |
3c663bbd | 1873 | void *data, struct ceph_osd_event **pevent) |
a40c4f10 YS |
1874 | { |
1875 | struct ceph_osd_event *event; | |
1876 | ||
1877 | event = kmalloc(sizeof(*event), GFP_NOIO); | |
1878 | if (!event) | |
1879 | return -ENOMEM; | |
1880 | ||
1881 | dout("create_event %p\n", event); | |
1882 | event->cb = event_cb; | |
3c663bbd | 1883 | event->one_shot = 0; |
a40c4f10 YS |
1884 | event->data = data; |
1885 | event->osdc = osdc; | |
1886 | INIT_LIST_HEAD(&event->osd_node); | |
3ee5234d | 1887 | RB_CLEAR_NODE(&event->node); |
a40c4f10 YS |
1888 | kref_init(&event->kref); /* one ref for us */ |
1889 | kref_get(&event->kref); /* one ref for the caller */ | |
a40c4f10 YS |
1890 | |
1891 | spin_lock(&osdc->event_lock); | |
1892 | event->cookie = ++osdc->event_count; | |
1893 | __insert_event(osdc, event); | |
1894 | spin_unlock(&osdc->event_lock); | |
1895 | ||
1896 | *pevent = event; | |
1897 | return 0; | |
1898 | } | |
1899 | EXPORT_SYMBOL(ceph_osdc_create_event); | |
1900 | ||
1901 | void ceph_osdc_cancel_event(struct ceph_osd_event *event) | |
1902 | { | |
1903 | struct ceph_osd_client *osdc = event->osdc; | |
1904 | ||
1905 | dout("cancel_event %p\n", event); | |
1906 | spin_lock(&osdc->event_lock); | |
1907 | __remove_event(event); | |
1908 | spin_unlock(&osdc->event_lock); | |
1909 | ceph_osdc_put_event(event); /* caller's */ | |
1910 | } | |
1911 | EXPORT_SYMBOL(ceph_osdc_cancel_event); | |
1912 | ||
1913 | ||
1914 | static void do_event_work(struct work_struct *work) | |
1915 | { | |
1916 | struct ceph_osd_event_work *event_work = | |
1917 | container_of(work, struct ceph_osd_event_work, work); | |
1918 | struct ceph_osd_event *event = event_work->event; | |
1919 | u64 ver = event_work->ver; | |
1920 | u64 notify_id = event_work->notify_id; | |
1921 | u8 opcode = event_work->opcode; | |
1922 | ||
1923 | dout("do_event_work completing %p\n", event); | |
1924 | event->cb(ver, notify_id, opcode, event->data); | |
a40c4f10 YS |
1925 | dout("do_event_work completed %p\n", event); |
1926 | ceph_osdc_put_event(event); | |
1927 | kfree(event_work); | |
1928 | } | |
1929 | ||
1930 | ||
1931 | /* | |
1932 | * Process osd watch notifications | |
1933 | */ | |
3c663bbd AE |
1934 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
1935 | struct ceph_msg *msg) | |
a40c4f10 YS |
1936 | { |
1937 | void *p, *end; | |
1938 | u8 proto_ver; | |
1939 | u64 cookie, ver, notify_id; | |
1940 | u8 opcode; | |
1941 | struct ceph_osd_event *event; | |
1942 | struct ceph_osd_event_work *event_work; | |
1943 | ||
1944 | p = msg->front.iov_base; | |
1945 | end = p + msg->front.iov_len; | |
1946 | ||
1947 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
1948 | ceph_decode_8_safe(&p, end, opcode, bad); | |
1949 | ceph_decode_64_safe(&p, end, cookie, bad); | |
1950 | ceph_decode_64_safe(&p, end, ver, bad); | |
1951 | ceph_decode_64_safe(&p, end, notify_id, bad); | |
1952 | ||
1953 | spin_lock(&osdc->event_lock); | |
1954 | event = __find_event(osdc, cookie); | |
1955 | if (event) { | |
3c663bbd | 1956 | BUG_ON(event->one_shot); |
a40c4f10 | 1957 | get_event(event); |
a40c4f10 YS |
1958 | } |
1959 | spin_unlock(&osdc->event_lock); | |
1960 | dout("handle_watch_notify cookie %lld ver %lld event %p\n", | |
1961 | cookie, ver, event); | |
1962 | if (event) { | |
1963 | event_work = kmalloc(sizeof(*event_work), GFP_NOIO); | |
a40c4f10 YS |
1964 | if (!event_work) { |
1965 | dout("ERROR: could not allocate event_work\n"); | |
1966 | goto done_err; | |
1967 | } | |
6b0ae409 | 1968 | INIT_WORK(&event_work->work, do_event_work); |
a40c4f10 YS |
1969 | event_work->event = event; |
1970 | event_work->ver = ver; | |
1971 | event_work->notify_id = notify_id; | |
1972 | event_work->opcode = opcode; | |
1973 | if (!queue_work(osdc->notify_wq, &event_work->work)) { | |
1974 | dout("WARNING: failed to queue notify event work\n"); | |
1975 | goto done_err; | |
1976 | } | |
1977 | } | |
1978 | ||
1979 | return; | |
1980 | ||
1981 | done_err: | |
a40c4f10 YS |
1982 | ceph_osdc_put_event(event); |
1983 | return; | |
1984 | ||
1985 | bad: | |
1986 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
1987 | return; | |
1988 | } | |
1989 | ||
e65550fd AE |
1990 | /* |
1991 | * build new request AND message | |
1992 | * | |
1993 | */ | |
1994 | void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, | |
1995 | struct ceph_snap_context *snapc, u64 snap_id, | |
1996 | struct timespec *mtime) | |
1997 | { | |
1998 | struct ceph_msg *msg = req->r_request; | |
1999 | void *p; | |
2000 | size_t msg_size; | |
2001 | int flags = req->r_flags; | |
2002 | u64 data_len; | |
2003 | unsigned int i; | |
2004 | ||
2005 | req->r_snapid = snap_id; | |
2006 | req->r_snapc = ceph_get_snap_context(snapc); | |
2007 | ||
2008 | /* encode request */ | |
2009 | msg->hdr.version = cpu_to_le16(4); | |
2010 | ||
2011 | p = msg->front.iov_base; | |
2012 | ceph_encode_32(&p, 1); /* client_inc is always 1 */ | |
2013 | req->r_request_osdmap_epoch = p; | |
2014 | p += 4; | |
2015 | req->r_request_flags = p; | |
2016 | p += 4; | |
2017 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) | |
2018 | ceph_encode_timespec(p, mtime); | |
2019 | p += sizeof(struct ceph_timespec); | |
2020 | req->r_request_reassert_version = p; | |
2021 | p += sizeof(struct ceph_eversion); /* will get filled in */ | |
2022 | ||
2023 | /* oloc */ | |
2024 | ceph_encode_8(&p, 4); | |
2025 | ceph_encode_8(&p, 4); | |
2026 | ceph_encode_32(&p, 8 + 4 + 4); | |
2027 | req->r_request_pool = p; | |
2028 | p += 8; | |
2029 | ceph_encode_32(&p, -1); /* preferred */ | |
2030 | ceph_encode_32(&p, 0); /* key len */ | |
2031 | ||
2032 | ceph_encode_8(&p, 1); | |
2033 | req->r_request_pgid = p; | |
2034 | p += 8 + 4; | |
2035 | ceph_encode_32(&p, -1); /* preferred */ | |
2036 | ||
2037 | /* oid */ | |
2038 | ceph_encode_32(&p, req->r_oid_len); | |
2039 | memcpy(p, req->r_oid, req->r_oid_len); | |
2040 | dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); | |
2041 | p += req->r_oid_len; | |
2042 | ||
2043 | /* ops--can imply data */ | |
2044 | ceph_encode_16(&p, (u16)req->r_num_ops); | |
2045 | data_len = 0; | |
2046 | for (i = 0; i < req->r_num_ops; i++) { | |
2047 | data_len += osd_req_encode_op(req, p, i); | |
2048 | p += sizeof(struct ceph_osd_op); | |
2049 | } | |
2050 | ||
2051 | /* snaps */ | |
2052 | ceph_encode_64(&p, req->r_snapid); | |
2053 | ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); | |
2054 | ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); | |
2055 | if (req->r_snapc) { | |
2056 | for (i = 0; i < snapc->num_snaps; i++) { | |
2057 | ceph_encode_64(&p, req->r_snapc->snaps[i]); | |
2058 | } | |
2059 | } | |
2060 | ||
2061 | req->r_request_attempts = p; | |
2062 | p += 4; | |
2063 | ||
2064 | /* data */ | |
2065 | if (flags & CEPH_OSD_FLAG_WRITE) { | |
2066 | u16 data_off; | |
2067 | ||
2068 | /* | |
2069 | * The header "data_off" is a hint to the receiver | |
2070 | * allowing it to align received data into its | |
2071 | * buffers such that there's no need to re-copy | |
2072 | * it before writing it to disk (direct I/O). | |
2073 | */ | |
2074 | data_off = (u16) (off & 0xffff); | |
2075 | req->r_request->hdr.data_off = cpu_to_le16(data_off); | |
2076 | } | |
2077 | req->r_request->hdr.data_len = cpu_to_le32(data_len); | |
2078 | ||
2079 | BUG_ON(p > msg->front.iov_base + msg->front.iov_len); | |
2080 | msg_size = p - msg->front.iov_base; | |
2081 | msg->front.iov_len = msg_size; | |
2082 | msg->hdr.front_len = cpu_to_le32(msg_size); | |
2083 | ||
2084 | dout("build_request msg_size was %d\n", (int)msg_size); | |
2085 | } | |
2086 | EXPORT_SYMBOL(ceph_osdc_build_request); | |
2087 | ||
70636773 AE |
2088 | /* |
2089 | * Register request, send initial attempt. | |
2090 | */ | |
2091 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
2092 | struct ceph_osd_request *req, | |
2093 | bool nofail) | |
2094 | { | |
2095 | int rc = 0; | |
2096 | ||
f24e9980 SW |
2097 | down_read(&osdc->map_sem); |
2098 | mutex_lock(&osdc->request_mutex); | |
dc4b870c | 2099 | __register_request(osdc, req); |
92451b49 AE |
2100 | WARN_ON(req->r_sent); |
2101 | rc = __map_request(osdc, req, 0); | |
2102 | if (rc < 0) { | |
2103 | if (nofail) { | |
2104 | dout("osdc_start_request failed map, " | |
2105 | " will retry %lld\n", req->r_tid); | |
2106 | rc = 0; | |
f24e9980 | 2107 | } |
92451b49 | 2108 | goto out_unlock; |
f24e9980 | 2109 | } |
92451b49 AE |
2110 | if (req->r_osd == NULL) { |
2111 | dout("send_request %p no up osds in pg\n", req); | |
2112 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
2113 | } else { | |
7e2766a1 | 2114 | __send_queued(osdc); |
92451b49 AE |
2115 | } |
2116 | rc = 0; | |
234af26f | 2117 | out_unlock: |
f24e9980 SW |
2118 | mutex_unlock(&osdc->request_mutex); |
2119 | up_read(&osdc->map_sem); | |
2120 | return rc; | |
2121 | } | |
3d14c5d2 | 2122 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 SW |
2123 | |
2124 | /* | |
2125 | * wait for a request to complete | |
2126 | */ | |
2127 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
2128 | struct ceph_osd_request *req) | |
2129 | { | |
2130 | int rc; | |
2131 | ||
2132 | rc = wait_for_completion_interruptible(&req->r_completion); | |
2133 | if (rc < 0) { | |
2134 | mutex_lock(&osdc->request_mutex); | |
2135 | __cancel_request(req); | |
529cfcc4 | 2136 | __unregister_request(osdc, req); |
f24e9980 | 2137 | mutex_unlock(&osdc->request_mutex); |
25845472 | 2138 | complete_request(req); |
529cfcc4 | 2139 | dout("wait_request tid %llu canceled/timed out\n", req->r_tid); |
f24e9980 SW |
2140 | return rc; |
2141 | } | |
2142 | ||
2143 | dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); | |
2144 | return req->r_result; | |
2145 | } | |
3d14c5d2 | 2146 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
2147 | |
2148 | /* | |
2149 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
2150 | */ | |
2151 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
2152 | { | |
2153 | struct ceph_osd_request *req; | |
2154 | u64 last_tid, next_tid = 0; | |
2155 | ||
2156 | mutex_lock(&osdc->request_mutex); | |
2157 | last_tid = osdc->last_tid; | |
2158 | while (1) { | |
2159 | req = __lookup_request_ge(osdc, next_tid); | |
2160 | if (!req) | |
2161 | break; | |
2162 | if (req->r_tid > last_tid) | |
2163 | break; | |
2164 | ||
2165 | next_tid = req->r_tid + 1; | |
2166 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) | |
2167 | continue; | |
2168 | ||
2169 | ceph_osdc_get_request(req); | |
2170 | mutex_unlock(&osdc->request_mutex); | |
2171 | dout("sync waiting on tid %llu (last is %llu)\n", | |
2172 | req->r_tid, last_tid); | |
2173 | wait_for_completion(&req->r_safe_completion); | |
2174 | mutex_lock(&osdc->request_mutex); | |
2175 | ceph_osdc_put_request(req); | |
2176 | } | |
2177 | mutex_unlock(&osdc->request_mutex); | |
2178 | dout("sync done (thru tid %llu)\n", last_tid); | |
2179 | } | |
3d14c5d2 | 2180 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 SW |
2181 | |
2182 | /* | |
2183 | * init, shutdown | |
2184 | */ | |
2185 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
2186 | { | |
2187 | int err; | |
2188 | ||
2189 | dout("init\n"); | |
2190 | osdc->client = client; | |
2191 | osdc->osdmap = NULL; | |
2192 | init_rwsem(&osdc->map_sem); | |
2193 | init_completion(&osdc->map_waiters); | |
2194 | osdc->last_requested_map = 0; | |
2195 | mutex_init(&osdc->request_mutex); | |
f24e9980 SW |
2196 | osdc->last_tid = 0; |
2197 | osdc->osds = RB_ROOT; | |
f5a2041b | 2198 | INIT_LIST_HEAD(&osdc->osd_lru); |
f24e9980 | 2199 | osdc->requests = RB_ROOT; |
422d2cb8 | 2200 | INIT_LIST_HEAD(&osdc->req_lru); |
6f6c7006 SW |
2201 | INIT_LIST_HEAD(&osdc->req_unsent); |
2202 | INIT_LIST_HEAD(&osdc->req_notarget); | |
a40c4f10 | 2203 | INIT_LIST_HEAD(&osdc->req_linger); |
f24e9980 SW |
2204 | osdc->num_requests = 0; |
2205 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); | |
f5a2041b | 2206 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10 YS |
2207 | spin_lock_init(&osdc->event_lock); |
2208 | osdc->event_tree = RB_ROOT; | |
2209 | osdc->event_count = 0; | |
f5a2041b YS |
2210 | |
2211 | schedule_delayed_work(&osdc->osds_timeout_work, | |
3d14c5d2 | 2212 | round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); |
f24e9980 | 2213 | |
5f44f142 | 2214 | err = -ENOMEM; |
f24e9980 SW |
2215 | osdc->req_mempool = mempool_create_kmalloc_pool(10, |
2216 | sizeof(struct ceph_osd_request)); | |
2217 | if (!osdc->req_mempool) | |
5f44f142 | 2218 | goto out; |
f24e9980 | 2219 | |
d50b409f SW |
2220 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
2221 | OSD_OP_FRONT_LEN, 10, true, | |
4f48280e | 2222 | "osd_op"); |
f24e9980 | 2223 | if (err < 0) |
5f44f142 | 2224 | goto out_mempool; |
d50b409f | 2225 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
4f48280e SW |
2226 | OSD_OPREPLY_FRONT_LEN, 10, true, |
2227 | "osd_op_reply"); | |
c16e7869 SW |
2228 | if (err < 0) |
2229 | goto out_msgpool; | |
a40c4f10 YS |
2230 | |
2231 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); | |
2232 | if (IS_ERR(osdc->notify_wq)) { | |
2233 | err = PTR_ERR(osdc->notify_wq); | |
2234 | osdc->notify_wq = NULL; | |
2235 | goto out_msgpool; | |
2236 | } | |
f24e9980 | 2237 | return 0; |
5f44f142 | 2238 | |
c16e7869 SW |
2239 | out_msgpool: |
2240 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
2241 | out_mempool: |
2242 | mempool_destroy(osdc->req_mempool); | |
2243 | out: | |
2244 | return err; | |
f24e9980 SW |
2245 | } |
2246 | ||
2247 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
2248 | { | |
a40c4f10 YS |
2249 | flush_workqueue(osdc->notify_wq); |
2250 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 2251 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 2252 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
f24e9980 SW |
2253 | if (osdc->osdmap) { |
2254 | ceph_osdmap_destroy(osdc->osdmap); | |
2255 | osdc->osdmap = NULL; | |
2256 | } | |
aca420bc | 2257 | remove_all_osds(osdc); |
f24e9980 SW |
2258 | mempool_destroy(osdc->req_mempool); |
2259 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 2260 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
2261 | } |
2262 | ||
2263 | /* | |
2264 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
2265 | * *plen. Return number of bytes read, or error. | |
2266 | */ | |
2267 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
2268 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
2269 | u64 off, u64 *plen, | |
2270 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 2271 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
2272 | { |
2273 | struct ceph_osd_request *req; | |
2274 | int rc = 0; | |
2275 | ||
2276 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
2277 | vino.snap, off, *plen); | |
79528734 | 2278 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1, |
f24e9980 | 2279 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, |
acead002 | 2280 | NULL, truncate_seq, truncate_size, |
153e5167 | 2281 | false); |
6816282d SW |
2282 | if (IS_ERR(req)) |
2283 | return PTR_ERR(req); | |
f24e9980 SW |
2284 | |
2285 | /* it may be a short read due to an object boundary */ | |
0fff87ec | 2286 | |
a4ce40a9 AE |
2287 | osd_req_op_extent_osd_data_pages(req, 0, false, |
2288 | pages, *plen, page_align, false, false); | |
f24e9980 | 2289 | |
e0c59487 | 2290 | dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", |
43bfe5de | 2291 | off, *plen, *plen, page_align); |
f24e9980 | 2292 | |
79528734 | 2293 | ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); |
02ee07d3 | 2294 | |
f24e9980 SW |
2295 | rc = ceph_osdc_start_request(osdc, req, false); |
2296 | if (!rc) | |
2297 | rc = ceph_osdc_wait_request(osdc, req); | |
2298 | ||
2299 | ceph_osdc_put_request(req); | |
2300 | dout("readpages result %d\n", rc); | |
2301 | return rc; | |
2302 | } | |
3d14c5d2 | 2303 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
2304 | |
2305 | /* | |
2306 | * do a synchronous write on N pages | |
2307 | */ | |
2308 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
2309 | struct ceph_file_layout *layout, | |
2310 | struct ceph_snap_context *snapc, | |
2311 | u64 off, u64 len, | |
2312 | u32 truncate_seq, u64 truncate_size, | |
2313 | struct timespec *mtime, | |
24808826 | 2314 | struct page **pages, int num_pages) |
f24e9980 SW |
2315 | { |
2316 | struct ceph_osd_request *req; | |
2317 | int rc = 0; | |
b7495fc2 | 2318 | int page_align = off & ~PAGE_MASK; |
f24e9980 | 2319 | |
acead002 | 2320 | BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ |
79528734 | 2321 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1, |
f24e9980 | 2322 | CEPH_OSD_OP_WRITE, |
24808826 | 2323 | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, |
acead002 | 2324 | snapc, truncate_seq, truncate_size, |
153e5167 | 2325 | true); |
6816282d SW |
2326 | if (IS_ERR(req)) |
2327 | return PTR_ERR(req); | |
f24e9980 SW |
2328 | |
2329 | /* it may be a short write due to an object boundary */ | |
a4ce40a9 | 2330 | osd_req_op_extent_osd_data_pages(req, 0, true, pages, len, page_align, |
43bfe5de AE |
2331 | false, false); |
2332 | dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); | |
f24e9980 | 2333 | |
79528734 | 2334 | ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); |
02ee07d3 | 2335 | |
87f979d3 | 2336 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
2337 | if (!rc) |
2338 | rc = ceph_osdc_wait_request(osdc, req); | |
2339 | ||
2340 | ceph_osdc_put_request(req); | |
2341 | if (rc == 0) | |
2342 | rc = len; | |
2343 | dout("writepages result %d\n", rc); | |
2344 | return rc; | |
2345 | } | |
3d14c5d2 | 2346 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 SW |
2347 | |
2348 | /* | |
2349 | * handle incoming message | |
2350 | */ | |
2351 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
2352 | { | |
2353 | struct ceph_osd *osd = con->private; | |
32c895e7 | 2354 | struct ceph_osd_client *osdc; |
f24e9980 SW |
2355 | int type = le16_to_cpu(msg->hdr.type); |
2356 | ||
2357 | if (!osd) | |
4a32f93d | 2358 | goto out; |
32c895e7 | 2359 | osdc = osd->o_osdc; |
f24e9980 SW |
2360 | |
2361 | switch (type) { | |
2362 | case CEPH_MSG_OSD_MAP: | |
2363 | ceph_osdc_handle_map(osdc, msg); | |
2364 | break; | |
2365 | case CEPH_MSG_OSD_OPREPLY: | |
350b1c32 | 2366 | handle_reply(osdc, msg, con); |
f24e9980 | 2367 | break; |
a40c4f10 YS |
2368 | case CEPH_MSG_WATCH_NOTIFY: |
2369 | handle_watch_notify(osdc, msg); | |
2370 | break; | |
f24e9980 SW |
2371 | |
2372 | default: | |
2373 | pr_err("received unknown message type %d %s\n", type, | |
2374 | ceph_msg_type_name(type)); | |
2375 | } | |
4a32f93d | 2376 | out: |
f24e9980 SW |
2377 | ceph_msg_put(msg); |
2378 | } | |
2379 | ||
5b3a4db3 | 2380 | /* |
21b667f6 SW |
2381 | * lookup and return message for incoming reply. set up reply message |
2382 | * pages. | |
5b3a4db3 SW |
2383 | */ |
2384 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
2385 | struct ceph_msg_header *hdr, |
2386 | int *skip) | |
f24e9980 SW |
2387 | { |
2388 | struct ceph_osd *osd = con->private; | |
2389 | struct ceph_osd_client *osdc = osd->o_osdc; | |
2450418c | 2390 | struct ceph_msg *m; |
0547a9b3 | 2391 | struct ceph_osd_request *req; |
5b3a4db3 SW |
2392 | int front = le32_to_cpu(hdr->front_len); |
2393 | int data_len = le32_to_cpu(hdr->data_len); | |
0547a9b3 | 2394 | u64 tid; |
f24e9980 | 2395 | |
0547a9b3 YS |
2396 | tid = le64_to_cpu(hdr->tid); |
2397 | mutex_lock(&osdc->request_mutex); | |
2398 | req = __lookup_request(osdc, tid); | |
2399 | if (!req) { | |
2400 | *skip = 1; | |
2401 | m = NULL; | |
756a16a5 SW |
2402 | dout("get_reply unknown tid %llu from osd%d\n", tid, |
2403 | osd->o_osd); | |
0547a9b3 YS |
2404 | goto out; |
2405 | } | |
c16e7869 | 2406 | |
ace6d3a9 | 2407 | if (req->r_reply->con) |
8921d114 | 2408 | dout("%s revoking msg %p from old con %p\n", __func__, |
ace6d3a9 AE |
2409 | req->r_reply, req->r_reply->con); |
2410 | ceph_msg_revoke_incoming(req->r_reply); | |
0547a9b3 | 2411 | |
c16e7869 SW |
2412 | if (front > req->r_reply->front.iov_len) { |
2413 | pr_warning("get_reply front %d > preallocated %d\n", | |
2414 | front, (int)req->r_reply->front.iov_len); | |
b61c2763 | 2415 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); |
a79832f2 | 2416 | if (!m) |
c16e7869 SW |
2417 | goto out; |
2418 | ceph_msg_put(req->r_reply); | |
2419 | req->r_reply = m; | |
2420 | } | |
2421 | m = ceph_msg_get(req->r_reply); | |
2422 | ||
0547a9b3 | 2423 | if (data_len > 0) { |
a4ce40a9 | 2424 | struct ceph_osd_data *osd_data; |
0fff87ec | 2425 | |
a4ce40a9 AE |
2426 | /* |
2427 | * XXX This is assuming there is only one op containing | |
2428 | * XXX page data. Probably OK for reads, but this | |
2429 | * XXX ought to be done more generally. | |
2430 | */ | |
2431 | osd_data = osd_req_op_extent_osd_data(req, 0, false); | |
0fff87ec | 2432 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { |
0fff87ec | 2433 | if (osd_data->pages && |
e0c59487 | 2434 | unlikely(osd_data->length < data_len)) { |
2ac2b7a6 | 2435 | |
e0c59487 AE |
2436 | pr_warning("tid %lld reply has %d bytes " |
2437 | "we had only %llu bytes ready\n", | |
2438 | tid, data_len, osd_data->length); | |
2ac2b7a6 AE |
2439 | *skip = 1; |
2440 | ceph_msg_put(m); | |
2441 | m = NULL; | |
2442 | goto out; | |
2443 | } | |
2ac2b7a6 | 2444 | } |
0547a9b3 | 2445 | } |
5b3a4db3 | 2446 | *skip = 0; |
c16e7869 | 2447 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 YS |
2448 | |
2449 | out: | |
2450 | mutex_unlock(&osdc->request_mutex); | |
2450418c | 2451 | return m; |
5b3a4db3 SW |
2452 | |
2453 | } | |
2454 | ||
2455 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, | |
2456 | struct ceph_msg_header *hdr, | |
2457 | int *skip) | |
2458 | { | |
2459 | struct ceph_osd *osd = con->private; | |
2460 | int type = le16_to_cpu(hdr->type); | |
2461 | int front = le32_to_cpu(hdr->front_len); | |
2462 | ||
1c20f2d2 | 2463 | *skip = 0; |
5b3a4db3 SW |
2464 | switch (type) { |
2465 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 2466 | case CEPH_MSG_WATCH_NOTIFY: |
b61c2763 | 2467 | return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3 SW |
2468 | case CEPH_MSG_OSD_OPREPLY: |
2469 | return get_reply(con, hdr, skip); | |
2470 | default: | |
2471 | pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, | |
2472 | osd->o_osd); | |
2473 | *skip = 1; | |
2474 | return NULL; | |
2475 | } | |
f24e9980 SW |
2476 | } |
2477 | ||
2478 | /* | |
2479 | * Wrappers to refcount containing ceph_osd struct | |
2480 | */ | |
2481 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
2482 | { | |
2483 | struct ceph_osd *osd = con->private; | |
2484 | if (get_osd(osd)) | |
2485 | return con; | |
2486 | return NULL; | |
2487 | } | |
2488 | ||
2489 | static void put_osd_con(struct ceph_connection *con) | |
2490 | { | |
2491 | struct ceph_osd *osd = con->private; | |
2492 | put_osd(osd); | |
2493 | } | |
2494 | ||
4e7a5dcd SW |
2495 | /* |
2496 | * authentication | |
2497 | */ | |
a3530df3 AE |
2498 | /* |
2499 | * Note: returned pointer is the address of a structure that's | |
2500 | * managed separately. Caller must *not* attempt to free it. | |
2501 | */ | |
2502 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 2503 | int *proto, int force_new) |
4e7a5dcd SW |
2504 | { |
2505 | struct ceph_osd *o = con->private; | |
2506 | struct ceph_osd_client *osdc = o->o_osdc; | |
2507 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 2508 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 2509 | |
74f1869f | 2510 | if (force_new && auth->authorizer) { |
27859f97 | 2511 | ceph_auth_destroy_authorizer(ac, auth->authorizer); |
74f1869f AE |
2512 | auth->authorizer = NULL; |
2513 | } | |
27859f97 SW |
2514 | if (!auth->authorizer) { |
2515 | int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
2516 | auth); | |
4e7a5dcd | 2517 | if (ret) |
a3530df3 | 2518 | return ERR_PTR(ret); |
27859f97 SW |
2519 | } else { |
2520 | int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
0bed9b5c SW |
2521 | auth); |
2522 | if (ret) | |
2523 | return ERR_PTR(ret); | |
4e7a5dcd | 2524 | } |
4e7a5dcd | 2525 | *proto = ac->protocol; |
74f1869f | 2526 | |
a3530df3 | 2527 | return auth; |
4e7a5dcd SW |
2528 | } |
2529 | ||
2530 | ||
2531 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
2532 | { | |
2533 | struct ceph_osd *o = con->private; | |
2534 | struct ceph_osd_client *osdc = o->o_osdc; | |
2535 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2536 | ||
27859f97 | 2537 | return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
2538 | } |
2539 | ||
9bd2e6f8 SW |
2540 | static int invalidate_authorizer(struct ceph_connection *con) |
2541 | { | |
2542 | struct ceph_osd *o = con->private; | |
2543 | struct ceph_osd_client *osdc = o->o_osdc; | |
2544 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2545 | ||
27859f97 | 2546 | ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
9bd2e6f8 SW |
2547 | return ceph_monc_validate_auth(&osdc->client->monc); |
2548 | } | |
4e7a5dcd | 2549 | |
9e32789f | 2550 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
2551 | .get = get_osd_con, |
2552 | .put = put_osd_con, | |
2553 | .dispatch = dispatch, | |
4e7a5dcd SW |
2554 | .get_authorizer = get_authorizer, |
2555 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 2556 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 2557 | .alloc_msg = alloc_msg, |
81b024e7 | 2558 | .fault = osd_reset, |
f24e9980 | 2559 | }; |