Commit | Line | Data |
---|---|---|
b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
a4ce40a9 | 2 | |
3d14c5d2 | 3 | #include <linux/ceph/ceph_debug.h> |
f24e9980 | 4 | |
3d14c5d2 | 5 | #include <linux/module.h> |
f24e9980 SW |
6 | #include <linux/err.h> |
7 | #include <linux/highmem.h> | |
8 | #include <linux/mm.h> | |
9 | #include <linux/pagemap.h> | |
10 | #include <linux/slab.h> | |
11 | #include <linux/uaccess.h> | |
68b4476b YS |
12 | #ifdef CONFIG_BLOCK |
13 | #include <linux/bio.h> | |
14 | #endif | |
f24e9980 | 15 | |
8cb441c0 | 16 | #include <linux/ceph/ceph_features.h> |
3d14c5d2 YS |
17 | #include <linux/ceph/libceph.h> |
18 | #include <linux/ceph/osd_client.h> | |
19 | #include <linux/ceph/messenger.h> | |
20 | #include <linux/ceph/decode.h> | |
21 | #include <linux/ceph/auth.h> | |
22 | #include <linux/ceph/pagelist.h> | |
08c1ac50 | 23 | #include <linux/ceph/striper.h> |
f24e9980 | 24 | |
c16e7869 | 25 | #define OSD_OPREPLY_FRONT_LEN 512 |
0d59ab81 | 26 | |
5522ae0b AE |
27 | static struct kmem_cache *ceph_osd_request_cache; |
28 | ||
9e32789f | 29 | static const struct ceph_connection_operations osd_con_ops; |
f24e9980 | 30 | |
f24e9980 SW |
31 | /* |
32 | * Implement client access to distributed object storage cluster. | |
33 | * | |
34 | * All data objects are stored within a cluster/cloud of OSDs, or | |
35 | * "object storage devices." (Note that Ceph OSDs have _nothing_ to | |
36 | * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply | |
37 | * remote daemons serving up and coordinating consistent and safe | |
38 | * access to storage. | |
39 | * | |
40 | * Cluster membership and the mapping of data objects onto storage devices | |
41 | * are described by the osd map. | |
42 | * | |
43 | * We keep track of pending OSD requests (read, write), resubmit | |
44 | * requests to different OSDs when the cluster topology/data layout | |
45 | * change, or retry the affected requests when the communications | |
46 | * channel with an OSD is reset. | |
47 | */ | |
48 | ||
5aea3dcd ID |
49 | static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req); |
50 | static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req); | |
922dab61 ID |
51 | static void link_linger(struct ceph_osd *osd, |
52 | struct ceph_osd_linger_request *lreq); | |
53 | static void unlink_linger(struct ceph_osd *osd, | |
54 | struct ceph_osd_linger_request *lreq); | |
a02a946d | 55 | static void clear_backoffs(struct ceph_osd *osd); |
5aea3dcd ID |
56 | |
57 | #if 1 | |
58 | static inline bool rwsem_is_wrlocked(struct rw_semaphore *sem) | |
59 | { | |
60 | bool wrlocked = true; | |
61 | ||
62 | if (unlikely(down_read_trylock(sem))) { | |
63 | wrlocked = false; | |
64 | up_read(sem); | |
65 | } | |
66 | ||
67 | return wrlocked; | |
68 | } | |
69 | static inline void verify_osdc_locked(struct ceph_osd_client *osdc) | |
70 | { | |
71 | WARN_ON(!rwsem_is_locked(&osdc->lock)); | |
72 | } | |
73 | static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) | |
74 | { | |
75 | WARN_ON(!rwsem_is_wrlocked(&osdc->lock)); | |
76 | } | |
77 | static inline void verify_osd_locked(struct ceph_osd *osd) | |
78 | { | |
79 | struct ceph_osd_client *osdc = osd->o_osdc; | |
80 | ||
81 | WARN_ON(!(mutex_is_locked(&osd->lock) && | |
82 | rwsem_is_locked(&osdc->lock)) && | |
83 | !rwsem_is_wrlocked(&osdc->lock)); | |
84 | } | |
922dab61 ID |
85 | static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) |
86 | { | |
87 | WARN_ON(!mutex_is_locked(&lreq->lock)); | |
88 | } | |
5aea3dcd ID |
89 | #else |
90 | static inline void verify_osdc_locked(struct ceph_osd_client *osdc) { } | |
91 | static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) { } | |
92 | static inline void verify_osd_locked(struct ceph_osd *osd) { } | |
922dab61 | 93 | static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) { } |
5aea3dcd ID |
94 | #endif |
95 | ||
f24e9980 SW |
96 | /* |
97 | * calculate the mapping of a file extent onto an object, and fill out the | |
98 | * request accordingly. shorten extent as necessary if it crosses an | |
99 | * object boundary. | |
100 | * | |
101 | * fill osd op in request message. | |
102 | */ | |
dbe0fc41 | 103 | static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, |
a19dadfb | 104 | u64 *objnum, u64 *objoff, u64 *objlen) |
f24e9980 | 105 | { |
60e56f13 | 106 | u64 orig_len = *plen; |
dccbf080 | 107 | u32 xlen; |
f24e9980 | 108 | |
60e56f13 | 109 | /* object extent? */ |
dccbf080 ID |
110 | ceph_calc_file_object_mapping(layout, off, orig_len, objnum, |
111 | objoff, &xlen); | |
112 | *objlen = xlen; | |
75d1c941 AE |
113 | if (*objlen < orig_len) { |
114 | *plen = *objlen; | |
60e56f13 AE |
115 | dout(" skipping last %llu, final file extent %llu~%llu\n", |
116 | orig_len - *plen, off, *plen); | |
117 | } | |
118 | ||
75d1c941 | 119 | dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); |
3ff5f385 | 120 | return 0; |
f24e9980 SW |
121 | } |
122 | ||
c54d47bf AE |
123 | static void ceph_osd_data_init(struct ceph_osd_data *osd_data) |
124 | { | |
125 | memset(osd_data, 0, sizeof (*osd_data)); | |
126 | osd_data->type = CEPH_OSD_DATA_TYPE_NONE; | |
127 | } | |
128 | ||
89486833 ID |
129 | /* |
130 | * Consumes @pages if @own_pages is true. | |
131 | */ | |
a4ce40a9 | 132 | static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
133 | struct page **pages, u64 length, u32 alignment, |
134 | bool pages_from_pool, bool own_pages) | |
135 | { | |
136 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; | |
137 | osd_data->pages = pages; | |
138 | osd_data->length = length; | |
139 | osd_data->alignment = alignment; | |
140 | osd_data->pages_from_pool = pages_from_pool; | |
141 | osd_data->own_pages = own_pages; | |
142 | } | |
43bfe5de | 143 | |
89486833 ID |
144 | /* |
145 | * Consumes a ref on @pagelist. | |
146 | */ | |
a4ce40a9 | 147 | static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
148 | struct ceph_pagelist *pagelist) |
149 | { | |
150 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; | |
151 | osd_data->pagelist = pagelist; | |
152 | } | |
43bfe5de AE |
153 | |
154 | #ifdef CONFIG_BLOCK | |
a4ce40a9 | 155 | static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, |
5359a17d ID |
156 | struct ceph_bio_iter *bio_pos, |
157 | u32 bio_length) | |
43bfe5de AE |
158 | { |
159 | osd_data->type = CEPH_OSD_DATA_TYPE_BIO; | |
5359a17d | 160 | osd_data->bio_pos = *bio_pos; |
43bfe5de AE |
161 | osd_data->bio_length = bio_length; |
162 | } | |
43bfe5de AE |
163 | #endif /* CONFIG_BLOCK */ |
164 | ||
b9e281c2 | 165 | static void ceph_osd_data_bvecs_init(struct ceph_osd_data *osd_data, |
0010f705 ID |
166 | struct ceph_bvec_iter *bvec_pos, |
167 | u32 num_bvecs) | |
b9e281c2 ID |
168 | { |
169 | osd_data->type = CEPH_OSD_DATA_TYPE_BVECS; | |
170 | osd_data->bvec_pos = *bvec_pos; | |
0010f705 | 171 | osd_data->num_bvecs = num_bvecs; |
b9e281c2 ID |
172 | } |
173 | ||
49719778 AE |
174 | static struct ceph_osd_data * |
175 | osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) | |
176 | { | |
177 | BUG_ON(which >= osd_req->r_num_ops); | |
178 | ||
179 | return &osd_req->r_ops[which].raw_data_in; | |
180 | } | |
181 | ||
a4ce40a9 AE |
182 | struct ceph_osd_data * |
183 | osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, | |
406e2c9f | 184 | unsigned int which) |
a4ce40a9 | 185 | { |
863c7eb5 | 186 | return osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
187 | } |
188 | EXPORT_SYMBOL(osd_req_op_extent_osd_data); | |
189 | ||
49719778 AE |
190 | void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, |
191 | unsigned int which, struct page **pages, | |
192 | u64 length, u32 alignment, | |
193 | bool pages_from_pool, bool own_pages) | |
194 | { | |
195 | struct ceph_osd_data *osd_data; | |
196 | ||
197 | osd_data = osd_req_op_raw_data_in(osd_req, which); | |
198 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
199 | pages_from_pool, own_pages); | |
200 | } | |
201 | EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); | |
202 | ||
a4ce40a9 | 203 | void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, |
406e2c9f AE |
204 | unsigned int which, struct page **pages, |
205 | u64 length, u32 alignment, | |
a4ce40a9 AE |
206 | bool pages_from_pool, bool own_pages) |
207 | { | |
208 | struct ceph_osd_data *osd_data; | |
209 | ||
863c7eb5 | 210 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
211 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
212 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
213 | } |
214 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); | |
215 | ||
216 | void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, | |
406e2c9f | 217 | unsigned int which, struct ceph_pagelist *pagelist) |
a4ce40a9 AE |
218 | { |
219 | struct ceph_osd_data *osd_data; | |
220 | ||
863c7eb5 | 221 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 | 222 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
223 | } |
224 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); | |
225 | ||
226 | #ifdef CONFIG_BLOCK | |
227 | void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, | |
5359a17d ID |
228 | unsigned int which, |
229 | struct ceph_bio_iter *bio_pos, | |
230 | u32 bio_length) | |
a4ce40a9 AE |
231 | { |
232 | struct ceph_osd_data *osd_data; | |
863c7eb5 AE |
233 | |
234 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); | |
5359a17d | 235 | ceph_osd_data_bio_init(osd_data, bio_pos, bio_length); |
a4ce40a9 AE |
236 | } |
237 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); | |
238 | #endif /* CONFIG_BLOCK */ | |
239 | ||
0010f705 ID |
240 | void osd_req_op_extent_osd_data_bvecs(struct ceph_osd_request *osd_req, |
241 | unsigned int which, | |
242 | struct bio_vec *bvecs, u32 num_bvecs, | |
243 | u32 bytes) | |
244 | { | |
245 | struct ceph_osd_data *osd_data; | |
246 | struct ceph_bvec_iter it = { | |
247 | .bvecs = bvecs, | |
248 | .iter = { .bi_size = bytes }, | |
249 | }; | |
250 | ||
251 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); | |
252 | ceph_osd_data_bvecs_init(osd_data, &it, num_bvecs); | |
253 | } | |
254 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvecs); | |
255 | ||
b9e281c2 ID |
256 | void osd_req_op_extent_osd_data_bvec_pos(struct ceph_osd_request *osd_req, |
257 | unsigned int which, | |
258 | struct ceph_bvec_iter *bvec_pos) | |
259 | { | |
260 | struct ceph_osd_data *osd_data; | |
261 | ||
262 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); | |
0010f705 | 263 | ceph_osd_data_bvecs_init(osd_data, bvec_pos, 0); |
b9e281c2 ID |
264 | } |
265 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvec_pos); | |
266 | ||
a4ce40a9 AE |
267 | static void osd_req_op_cls_request_info_pagelist( |
268 | struct ceph_osd_request *osd_req, | |
269 | unsigned int which, struct ceph_pagelist *pagelist) | |
270 | { | |
271 | struct ceph_osd_data *osd_data; | |
272 | ||
863c7eb5 | 273 | osd_data = osd_req_op_data(osd_req, which, cls, request_info); |
a4ce40a9 | 274 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
275 | } |
276 | ||
04017e29 AE |
277 | void osd_req_op_cls_request_data_pagelist( |
278 | struct ceph_osd_request *osd_req, | |
279 | unsigned int which, struct ceph_pagelist *pagelist) | |
280 | { | |
281 | struct ceph_osd_data *osd_data; | |
282 | ||
863c7eb5 | 283 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); |
04017e29 | 284 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
bb873b53 ID |
285 | osd_req->r_ops[which].cls.indata_len += pagelist->length; |
286 | osd_req->r_ops[which].indata_len += pagelist->length; | |
04017e29 AE |
287 | } |
288 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); | |
289 | ||
6c57b554 AE |
290 | void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, |
291 | unsigned int which, struct page **pages, u64 length, | |
292 | u32 alignment, bool pages_from_pool, bool own_pages) | |
293 | { | |
294 | struct ceph_osd_data *osd_data; | |
295 | ||
296 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); | |
297 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
298 | pages_from_pool, own_pages); | |
bb873b53 ID |
299 | osd_req->r_ops[which].cls.indata_len += length; |
300 | osd_req->r_ops[which].indata_len += length; | |
6c57b554 AE |
301 | } |
302 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); | |
303 | ||
b9e281c2 ID |
304 | void osd_req_op_cls_request_data_bvecs(struct ceph_osd_request *osd_req, |
305 | unsigned int which, | |
0010f705 ID |
306 | struct bio_vec *bvecs, u32 num_bvecs, |
307 | u32 bytes) | |
b9e281c2 ID |
308 | { |
309 | struct ceph_osd_data *osd_data; | |
310 | struct ceph_bvec_iter it = { | |
311 | .bvecs = bvecs, | |
312 | .iter = { .bi_size = bytes }, | |
313 | }; | |
314 | ||
315 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); | |
0010f705 | 316 | ceph_osd_data_bvecs_init(osd_data, &it, num_bvecs); |
b9e281c2 ID |
317 | osd_req->r_ops[which].cls.indata_len += bytes; |
318 | osd_req->r_ops[which].indata_len += bytes; | |
319 | } | |
320 | EXPORT_SYMBOL(osd_req_op_cls_request_data_bvecs); | |
321 | ||
a4ce40a9 AE |
322 | void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, |
323 | unsigned int which, struct page **pages, u64 length, | |
324 | u32 alignment, bool pages_from_pool, bool own_pages) | |
325 | { | |
326 | struct ceph_osd_data *osd_data; | |
327 | ||
863c7eb5 | 328 | osd_data = osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
329 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
330 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
331 | } |
332 | EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); | |
333 | ||
23c08a9c AE |
334 | static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) |
335 | { | |
336 | switch (osd_data->type) { | |
337 | case CEPH_OSD_DATA_TYPE_NONE: | |
338 | return 0; | |
339 | case CEPH_OSD_DATA_TYPE_PAGES: | |
340 | return osd_data->length; | |
341 | case CEPH_OSD_DATA_TYPE_PAGELIST: | |
342 | return (u64)osd_data->pagelist->length; | |
343 | #ifdef CONFIG_BLOCK | |
344 | case CEPH_OSD_DATA_TYPE_BIO: | |
345 | return (u64)osd_data->bio_length; | |
346 | #endif /* CONFIG_BLOCK */ | |
b9e281c2 ID |
347 | case CEPH_OSD_DATA_TYPE_BVECS: |
348 | return osd_data->bvec_pos.iter.bi_size; | |
23c08a9c AE |
349 | default: |
350 | WARN(true, "unrecognized data type %d\n", (int)osd_data->type); | |
351 | return 0; | |
352 | } | |
353 | } | |
354 | ||
c54d47bf AE |
355 | static void ceph_osd_data_release(struct ceph_osd_data *osd_data) |
356 | { | |
5476492f | 357 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { |
c54d47bf AE |
358 | int num_pages; |
359 | ||
360 | num_pages = calc_pages_for((u64)osd_data->alignment, | |
361 | (u64)osd_data->length); | |
362 | ceph_release_page_vector(osd_data->pages, num_pages); | |
89486833 ID |
363 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { |
364 | ceph_pagelist_release(osd_data->pagelist); | |
c54d47bf | 365 | } |
5476492f AE |
366 | ceph_osd_data_init(osd_data); |
367 | } | |
368 | ||
369 | static void osd_req_op_data_release(struct ceph_osd_request *osd_req, | |
370 | unsigned int which) | |
371 | { | |
372 | struct ceph_osd_req_op *op; | |
373 | ||
374 | BUG_ON(which >= osd_req->r_num_ops); | |
375 | op = &osd_req->r_ops[which]; | |
376 | ||
377 | switch (op->op) { | |
378 | case CEPH_OSD_OP_READ: | |
379 | case CEPH_OSD_OP_WRITE: | |
e30b7577 | 380 | case CEPH_OSD_OP_WRITEFULL: |
5476492f AE |
381 | ceph_osd_data_release(&op->extent.osd_data); |
382 | break; | |
383 | case CEPH_OSD_OP_CALL: | |
384 | ceph_osd_data_release(&op->cls.request_info); | |
04017e29 | 385 | ceph_osd_data_release(&op->cls.request_data); |
5476492f AE |
386 | ceph_osd_data_release(&op->cls.response_data); |
387 | break; | |
d74b50be YZ |
388 | case CEPH_OSD_OP_SETXATTR: |
389 | case CEPH_OSD_OP_CMPXATTR: | |
390 | ceph_osd_data_release(&op->xattr.osd_data); | |
391 | break; | |
66ba609f YZ |
392 | case CEPH_OSD_OP_STAT: |
393 | ceph_osd_data_release(&op->raw_data_in); | |
394 | break; | |
922dab61 ID |
395 | case CEPH_OSD_OP_NOTIFY_ACK: |
396 | ceph_osd_data_release(&op->notify_ack.request_data); | |
397 | break; | |
19079203 ID |
398 | case CEPH_OSD_OP_NOTIFY: |
399 | ceph_osd_data_release(&op->notify.request_data); | |
400 | ceph_osd_data_release(&op->notify.response_data); | |
401 | break; | |
a4ed38d7 DF |
402 | case CEPH_OSD_OP_LIST_WATCHERS: |
403 | ceph_osd_data_release(&op->list_watchers.response_data); | |
404 | break; | |
78beb0ff | 405 | case CEPH_OSD_OP_COPY_FROM2: |
23ddf9be LH |
406 | ceph_osd_data_release(&op->copy_from.osd_data); |
407 | break; | |
5476492f AE |
408 | default: |
409 | break; | |
410 | } | |
c54d47bf AE |
411 | } |
412 | ||
63244fa1 ID |
413 | /* |
414 | * Assumes @t is zero-initialized. | |
415 | */ | |
416 | static void target_init(struct ceph_osd_request_target *t) | |
417 | { | |
418 | ceph_oid_init(&t->base_oid); | |
419 | ceph_oloc_init(&t->base_oloc); | |
420 | ceph_oid_init(&t->target_oid); | |
421 | ceph_oloc_init(&t->target_oloc); | |
422 | ||
423 | ceph_osds_init(&t->acting); | |
424 | ceph_osds_init(&t->up); | |
425 | t->size = -1; | |
426 | t->min_size = -1; | |
427 | ||
428 | t->osd = CEPH_HOMELESS_OSD; | |
429 | } | |
430 | ||
922dab61 ID |
431 | static void target_copy(struct ceph_osd_request_target *dest, |
432 | const struct ceph_osd_request_target *src) | |
433 | { | |
434 | ceph_oid_copy(&dest->base_oid, &src->base_oid); | |
435 | ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); | |
436 | ceph_oid_copy(&dest->target_oid, &src->target_oid); | |
437 | ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); | |
438 | ||
439 | dest->pgid = src->pgid; /* struct */ | |
dc98ff72 | 440 | dest->spgid = src->spgid; /* struct */ |
922dab61 ID |
441 | dest->pg_num = src->pg_num; |
442 | dest->pg_num_mask = src->pg_num_mask; | |
443 | ceph_osds_copy(&dest->acting, &src->acting); | |
444 | ceph_osds_copy(&dest->up, &src->up); | |
445 | dest->size = src->size; | |
446 | dest->min_size = src->min_size; | |
447 | dest->sort_bitwise = src->sort_bitwise; | |
2f3fead6 | 448 | dest->recovery_deletes = src->recovery_deletes; |
922dab61 ID |
449 | |
450 | dest->flags = src->flags; | |
7ed286f3 | 451 | dest->used_replica = src->used_replica; |
922dab61 ID |
452 | dest->paused = src->paused; |
453 | ||
04c7d789 | 454 | dest->epoch = src->epoch; |
dc93e0e2 ID |
455 | dest->last_force_resend = src->last_force_resend; |
456 | ||
922dab61 ID |
457 | dest->osd = src->osd; |
458 | } | |
459 | ||
63244fa1 ID |
460 | static void target_destroy(struct ceph_osd_request_target *t) |
461 | { | |
462 | ceph_oid_destroy(&t->base_oid); | |
30c156d9 | 463 | ceph_oloc_destroy(&t->base_oloc); |
63244fa1 | 464 | ceph_oid_destroy(&t->target_oid); |
30c156d9 | 465 | ceph_oloc_destroy(&t->target_oloc); |
63244fa1 ID |
466 | } |
467 | ||
f24e9980 SW |
468 | /* |
469 | * requests | |
470 | */ | |
3540bfdb ID |
471 | static void request_release_checks(struct ceph_osd_request *req) |
472 | { | |
473 | WARN_ON(!RB_EMPTY_NODE(&req->r_node)); | |
4609245e | 474 | WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node)); |
94e85771 | 475 | WARN_ON(!list_empty(&req->r_private_item)); |
3540bfdb ID |
476 | WARN_ON(req->r_osd); |
477 | } | |
478 | ||
9e94af20 | 479 | static void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 480 | { |
9e94af20 ID |
481 | struct ceph_osd_request *req = container_of(kref, |
482 | struct ceph_osd_request, r_kref); | |
5476492f | 483 | unsigned int which; |
415e49a9 | 484 | |
9e94af20 ID |
485 | dout("%s %p (r_request %p r_reply %p)\n", __func__, req, |
486 | req->r_request, req->r_reply); | |
3540bfdb | 487 | request_release_checks(req); |
9e94af20 | 488 | |
415e49a9 SW |
489 | if (req->r_request) |
490 | ceph_msg_put(req->r_request); | |
5aea3dcd | 491 | if (req->r_reply) |
ab8cb34a | 492 | ceph_msg_put(req->r_reply); |
0fff87ec | 493 | |
5476492f AE |
494 | for (which = 0; which < req->r_num_ops; which++) |
495 | osd_req_op_data_release(req, which); | |
0fff87ec | 496 | |
a66dd383 | 497 | target_destroy(&req->r_t); |
415e49a9 | 498 | ceph_put_snap_context(req->r_snapc); |
d30291b9 | 499 | |
415e49a9 SW |
500 | if (req->r_mempool) |
501 | mempool_free(req, req->r_osdc->req_mempool); | |
3f1af42a | 502 | else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) |
5522ae0b | 503 | kmem_cache_free(ceph_osd_request_cache, req); |
3f1af42a ID |
504 | else |
505 | kfree(req); | |
f24e9980 | 506 | } |
9e94af20 ID |
507 | |
508 | void ceph_osdc_get_request(struct ceph_osd_request *req) | |
509 | { | |
510 | dout("%s %p (was %d)\n", __func__, req, | |
2c935bc5 | 511 | kref_read(&req->r_kref)); |
9e94af20 ID |
512 | kref_get(&req->r_kref); |
513 | } | |
514 | EXPORT_SYMBOL(ceph_osdc_get_request); | |
515 | ||
516 | void ceph_osdc_put_request(struct ceph_osd_request *req) | |
517 | { | |
3ed97d63 ID |
518 | if (req) { |
519 | dout("%s %p (was %d)\n", __func__, req, | |
2c935bc5 | 520 | kref_read(&req->r_kref)); |
3ed97d63 ID |
521 | kref_put(&req->r_kref, ceph_osdc_release_request); |
522 | } | |
9e94af20 ID |
523 | } |
524 | EXPORT_SYMBOL(ceph_osdc_put_request); | |
68b4476b | 525 | |
3540bfdb ID |
526 | static void request_init(struct ceph_osd_request *req) |
527 | { | |
042f6498 | 528 | /* req only, each op is zeroed in osd_req_op_init() */ |
3540bfdb ID |
529 | memset(req, 0, sizeof(*req)); |
530 | ||
531 | kref_init(&req->r_kref); | |
532 | init_completion(&req->r_completion); | |
3540bfdb | 533 | RB_CLEAR_NODE(&req->r_node); |
4609245e | 534 | RB_CLEAR_NODE(&req->r_mc_node); |
94e85771 | 535 | INIT_LIST_HEAD(&req->r_private_item); |
3540bfdb ID |
536 | |
537 | target_init(&req->r_t); | |
538 | } | |
539 | ||
3499e8a5 | 540 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 541 | struct ceph_snap_context *snapc, |
1b83bef2 | 542 | unsigned int num_ops, |
3499e8a5 | 543 | bool use_mempool, |
54a54007 | 544 | gfp_t gfp_flags) |
f24e9980 SW |
545 | { |
546 | struct ceph_osd_request *req; | |
1b83bef2 | 547 | |
f24e9980 | 548 | if (use_mempool) { |
3f1af42a | 549 | BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); |
3499e8a5 | 550 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
3f1af42a ID |
551 | } else if (num_ops <= CEPH_OSD_SLAB_OPS) { |
552 | req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); | |
f24e9980 | 553 | } else { |
3f1af42a | 554 | BUG_ON(num_ops > CEPH_OSD_MAX_OPS); |
acafe7e3 | 555 | req = kmalloc(struct_size(req, r_ops, num_ops), gfp_flags); |
f24e9980 | 556 | } |
3f1af42a | 557 | if (unlikely(!req)) |
a79832f2 | 558 | return NULL; |
f24e9980 | 559 | |
3540bfdb | 560 | request_init(req); |
f24e9980 SW |
561 | req->r_osdc = osdc; |
562 | req->r_mempool = use_mempool; | |
79528734 | 563 | req->r_num_ops = num_ops; |
84127282 ID |
564 | req->r_snapid = CEPH_NOSNAP; |
565 | req->r_snapc = ceph_get_snap_context(snapc); | |
68b4476b | 566 | |
13d1ad16 ID |
567 | dout("%s req %p\n", __func__, req); |
568 | return req; | |
569 | } | |
570 | EXPORT_SYMBOL(ceph_osdc_alloc_request); | |
3f1af42a | 571 | |
2e59ffd1 | 572 | static int ceph_oloc_encoding_size(const struct ceph_object_locator *oloc) |
30c156d9 YZ |
573 | { |
574 | return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0); | |
575 | } | |
576 | ||
0d9c1ab3 ID |
577 | static int __ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp, |
578 | int num_request_data_items, | |
579 | int num_reply_data_items) | |
13d1ad16 ID |
580 | { |
581 | struct ceph_osd_client *osdc = req->r_osdc; | |
582 | struct ceph_msg *msg; | |
583 | int msg_size; | |
c16e7869 | 584 | |
0d9c1ab3 | 585 | WARN_ON(req->r_request || req->r_reply); |
d30291b9 | 586 | WARN_ON(ceph_oid_empty(&req->r_base_oid)); |
30c156d9 | 587 | WARN_ON(ceph_oloc_empty(&req->r_base_oloc)); |
d30291b9 | 588 | |
13d1ad16 | 589 | /* create request message */ |
8cb441c0 ID |
590 | msg_size = CEPH_ENCODING_START_BLK_LEN + |
591 | CEPH_PGID_ENCODING_LEN + 1; /* spgid */ | |
592 | msg_size += 4 + 4 + 4; /* hash, osdmap_epoch, flags */ | |
593 | msg_size += CEPH_ENCODING_START_BLK_LEN + | |
594 | sizeof(struct ceph_osd_reqid); /* reqid */ | |
595 | msg_size += sizeof(struct ceph_blkin_trace_info); /* trace */ | |
596 | msg_size += 4 + sizeof(struct ceph_timespec); /* client_inc, mtime */ | |
30c156d9 YZ |
597 | msg_size += CEPH_ENCODING_START_BLK_LEN + |
598 | ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */ | |
13d1ad16 ID |
599 | msg_size += 4 + req->r_base_oid.name_len; /* oid */ |
600 | msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); | |
ae458f5a ID |
601 | msg_size += 8; /* snapid */ |
602 | msg_size += 8; /* snap_seq */ | |
13d1ad16 | 603 | msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); |
8cb441c0 | 604 | msg_size += 4 + 8; /* retry_attempt, features */ |
ae458f5a | 605 | |
13d1ad16 | 606 | if (req->r_mempool) |
0d9c1ab3 ID |
607 | msg = ceph_msgpool_get(&osdc->msgpool_op, msg_size, |
608 | num_request_data_items); | |
f24e9980 | 609 | else |
0d9c1ab3 ID |
610 | msg = ceph_msg_new2(CEPH_MSG_OSD_OP, msg_size, |
611 | num_request_data_items, gfp, true); | |
13d1ad16 ID |
612 | if (!msg) |
613 | return -ENOMEM; | |
68b4476b | 614 | |
f24e9980 | 615 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 | 616 | req->r_request = msg; |
3499e8a5 | 617 | |
13d1ad16 ID |
618 | /* create reply message */ |
619 | msg_size = OSD_OPREPLY_FRONT_LEN; | |
711da55d ID |
620 | msg_size += req->r_base_oid.name_len; |
621 | msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); | |
13d1ad16 ID |
622 | |
623 | if (req->r_mempool) | |
0d9c1ab3 ID |
624 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, msg_size, |
625 | num_reply_data_items); | |
13d1ad16 | 626 | else |
0d9c1ab3 ID |
627 | msg = ceph_msg_new2(CEPH_MSG_OSD_OPREPLY, msg_size, |
628 | num_reply_data_items, gfp, true); | |
13d1ad16 ID |
629 | if (!msg) |
630 | return -ENOMEM; | |
631 | ||
632 | req->r_reply = msg; | |
633 | ||
634 | return 0; | |
3499e8a5 YS |
635 | } |
636 | ||
a8dd0a37 | 637 | static bool osd_req_opcode_valid(u16 opcode) |
68b4476b | 638 | { |
a8dd0a37 | 639 | switch (opcode) { |
70b5bfa3 ID |
640 | #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; |
641 | __CEPH_FORALL_OSD_OPS(GENERATE_CASE) | |
642 | #undef GENERATE_CASE | |
a8dd0a37 AE |
643 | default: |
644 | return false; | |
645 | } | |
646 | } | |
647 | ||
0d9c1ab3 ID |
648 | static void get_num_data_items(struct ceph_osd_request *req, |
649 | int *num_request_data_items, | |
650 | int *num_reply_data_items) | |
651 | { | |
652 | struct ceph_osd_req_op *op; | |
653 | ||
654 | *num_request_data_items = 0; | |
655 | *num_reply_data_items = 0; | |
656 | ||
657 | for (op = req->r_ops; op != &req->r_ops[req->r_num_ops]; op++) { | |
658 | switch (op->op) { | |
659 | /* request */ | |
660 | case CEPH_OSD_OP_WRITE: | |
661 | case CEPH_OSD_OP_WRITEFULL: | |
662 | case CEPH_OSD_OP_SETXATTR: | |
663 | case CEPH_OSD_OP_CMPXATTR: | |
664 | case CEPH_OSD_OP_NOTIFY_ACK: | |
78beb0ff | 665 | case CEPH_OSD_OP_COPY_FROM2: |
0d9c1ab3 ID |
666 | *num_request_data_items += 1; |
667 | break; | |
668 | ||
669 | /* reply */ | |
670 | case CEPH_OSD_OP_STAT: | |
671 | case CEPH_OSD_OP_READ: | |
672 | case CEPH_OSD_OP_LIST_WATCHERS: | |
673 | *num_reply_data_items += 1; | |
674 | break; | |
675 | ||
676 | /* both */ | |
677 | case CEPH_OSD_OP_NOTIFY: | |
678 | *num_request_data_items += 1; | |
679 | *num_reply_data_items += 1; | |
680 | break; | |
681 | case CEPH_OSD_OP_CALL: | |
682 | *num_request_data_items += 2; | |
683 | *num_reply_data_items += 1; | |
684 | break; | |
685 | ||
686 | default: | |
687 | WARN_ON(!osd_req_opcode_valid(op->op)); | |
688 | break; | |
689 | } | |
690 | } | |
691 | } | |
692 | ||
693 | /* | |
694 | * oid, oloc and OSD op opcode(s) must be filled in before this function | |
695 | * is called. | |
696 | */ | |
697 | int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) | |
698 | { | |
699 | int num_request_data_items, num_reply_data_items; | |
700 | ||
701 | get_num_data_items(req, &num_request_data_items, &num_reply_data_items); | |
702 | return __ceph_osdc_alloc_messages(req, gfp, num_request_data_items, | |
703 | num_reply_data_items); | |
704 | } | |
705 | EXPORT_SYMBOL(ceph_osdc_alloc_messages); | |
706 | ||
33803f33 AE |
707 | /* |
708 | * This is an osd op init function for opcodes that have no data or | |
709 | * other information associated with them. It also serves as a | |
710 | * common init routine for all the other init functions, below. | |
711 | */ | |
042f6498 JL |
712 | struct ceph_osd_req_op * |
713 | osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, | |
144cba14 | 714 | u16 opcode, u32 flags) |
33803f33 | 715 | { |
c99d2d4a AE |
716 | struct ceph_osd_req_op *op; |
717 | ||
718 | BUG_ON(which >= osd_req->r_num_ops); | |
33803f33 AE |
719 | BUG_ON(!osd_req_opcode_valid(opcode)); |
720 | ||
c99d2d4a | 721 | op = &osd_req->r_ops[which]; |
33803f33 | 722 | memset(op, 0, sizeof (*op)); |
33803f33 | 723 | op->op = opcode; |
144cba14 | 724 | op->flags = flags; |
c99d2d4a AE |
725 | |
726 | return op; | |
33803f33 | 727 | } |
49719778 AE |
728 | EXPORT_SYMBOL(osd_req_op_init); |
729 | ||
c99d2d4a AE |
730 | void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
731 | unsigned int which, u16 opcode, | |
33803f33 AE |
732 | u64 offset, u64 length, |
733 | u64 truncate_size, u32 truncate_seq) | |
734 | { | |
042f6498 JL |
735 | struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, |
736 | opcode, 0); | |
33803f33 AE |
737 | size_t payload_len = 0; |
738 | ||
ad7a60de | 739 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
e30b7577 ID |
740 | opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && |
741 | opcode != CEPH_OSD_OP_TRUNCATE); | |
33803f33 | 742 | |
33803f33 AE |
743 | op->extent.offset = offset; |
744 | op->extent.length = length; | |
745 | op->extent.truncate_size = truncate_size; | |
746 | op->extent.truncate_seq = truncate_seq; | |
e30b7577 | 747 | if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) |
33803f33 AE |
748 | payload_len += length; |
749 | ||
de2aa102 | 750 | op->indata_len = payload_len; |
33803f33 AE |
751 | } |
752 | EXPORT_SYMBOL(osd_req_op_extent_init); | |
753 | ||
c99d2d4a AE |
754 | void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
755 | unsigned int which, u64 length) | |
e5975c7c | 756 | { |
c99d2d4a AE |
757 | struct ceph_osd_req_op *op; |
758 | u64 previous; | |
759 | ||
760 | BUG_ON(which >= osd_req->r_num_ops); | |
761 | op = &osd_req->r_ops[which]; | |
762 | previous = op->extent.length; | |
e5975c7c AE |
763 | |
764 | if (length == previous) | |
765 | return; /* Nothing to do */ | |
766 | BUG_ON(length > previous); | |
767 | ||
768 | op->extent.length = length; | |
d641df81 YZ |
769 | if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) |
770 | op->indata_len -= previous - length; | |
e5975c7c AE |
771 | } |
772 | EXPORT_SYMBOL(osd_req_op_extent_update); | |
773 | ||
2c63f49a YZ |
774 | void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, |
775 | unsigned int which, u64 offset_inc) | |
776 | { | |
777 | struct ceph_osd_req_op *op, *prev_op; | |
778 | ||
779 | BUG_ON(which + 1 >= osd_req->r_num_ops); | |
780 | ||
781 | prev_op = &osd_req->r_ops[which]; | |
042f6498 | 782 | op = osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); |
2c63f49a YZ |
783 | /* dup previous one */ |
784 | op->indata_len = prev_op->indata_len; | |
785 | op->outdata_len = prev_op->outdata_len; | |
786 | op->extent = prev_op->extent; | |
787 | /* adjust offset */ | |
788 | op->extent.offset += offset_inc; | |
789 | op->extent.length -= offset_inc; | |
790 | ||
791 | if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) | |
792 | op->indata_len -= offset_inc; | |
793 | } | |
794 | EXPORT_SYMBOL(osd_req_op_extent_dup_last); | |
795 | ||
fe943d50 | 796 | int osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, |
24639ce5 | 797 | const char *class, const char *method) |
33803f33 | 798 | { |
24639ce5 | 799 | struct ceph_osd_req_op *op; |
5f562df5 | 800 | struct ceph_pagelist *pagelist; |
33803f33 AE |
801 | size_t payload_len = 0; |
802 | size_t size; | |
4766815b | 803 | int ret; |
33803f33 | 804 | |
042f6498 | 805 | op = osd_req_op_init(osd_req, which, CEPH_OSD_OP_CALL, 0); |
33803f33 | 806 | |
33165d47 | 807 | pagelist = ceph_pagelist_alloc(GFP_NOFS); |
fe943d50 CX |
808 | if (!pagelist) |
809 | return -ENOMEM; | |
810 | ||
33803f33 AE |
811 | op->cls.class_name = class; |
812 | size = strlen(class); | |
813 | BUG_ON(size > (size_t) U8_MAX); | |
814 | op->cls.class_len = size; | |
4766815b DD |
815 | ret = ceph_pagelist_append(pagelist, class, size); |
816 | if (ret) | |
817 | goto err_pagelist_free; | |
33803f33 AE |
818 | payload_len += size; |
819 | ||
820 | op->cls.method_name = method; | |
821 | size = strlen(method); | |
822 | BUG_ON(size > (size_t) U8_MAX); | |
823 | op->cls.method_len = size; | |
4766815b DD |
824 | ret = ceph_pagelist_append(pagelist, method, size); |
825 | if (ret) | |
826 | goto err_pagelist_free; | |
33803f33 AE |
827 | payload_len += size; |
828 | ||
a4ce40a9 | 829 | osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); |
de2aa102 | 830 | op->indata_len = payload_len; |
fe943d50 | 831 | return 0; |
4766815b DD |
832 | |
833 | err_pagelist_free: | |
834 | ceph_pagelist_release(pagelist); | |
835 | return ret; | |
33803f33 AE |
836 | } |
837 | EXPORT_SYMBOL(osd_req_op_cls_init); | |
8c042b0d | 838 | |
d74b50be YZ |
839 | int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, |
840 | u16 opcode, const char *name, const void *value, | |
841 | size_t size, u8 cmp_op, u8 cmp_mode) | |
842 | { | |
042f6498 JL |
843 | struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, |
844 | opcode, 0); | |
d74b50be YZ |
845 | struct ceph_pagelist *pagelist; |
846 | size_t payload_len; | |
4766815b | 847 | int ret; |
d74b50be YZ |
848 | |
849 | BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); | |
850 | ||
33165d47 | 851 | pagelist = ceph_pagelist_alloc(GFP_NOFS); |
d74b50be YZ |
852 | if (!pagelist) |
853 | return -ENOMEM; | |
854 | ||
d74b50be YZ |
855 | payload_len = strlen(name); |
856 | op->xattr.name_len = payload_len; | |
4766815b DD |
857 | ret = ceph_pagelist_append(pagelist, name, payload_len); |
858 | if (ret) | |
859 | goto err_pagelist_free; | |
d74b50be YZ |
860 | |
861 | op->xattr.value_len = size; | |
4766815b DD |
862 | ret = ceph_pagelist_append(pagelist, value, size); |
863 | if (ret) | |
864 | goto err_pagelist_free; | |
d74b50be YZ |
865 | payload_len += size; |
866 | ||
867 | op->xattr.cmp_op = cmp_op; | |
868 | op->xattr.cmp_mode = cmp_mode; | |
869 | ||
870 | ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); | |
de2aa102 | 871 | op->indata_len = payload_len; |
d74b50be | 872 | return 0; |
4766815b DD |
873 | |
874 | err_pagelist_free: | |
875 | ceph_pagelist_release(pagelist); | |
876 | return ret; | |
d74b50be YZ |
877 | } |
878 | EXPORT_SYMBOL(osd_req_op_xattr_init); | |
879 | ||
922dab61 ID |
880 | /* |
881 | * @watch_opcode: CEPH_OSD_WATCH_OP_* | |
882 | */ | |
883 | static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, | |
75dbb685 | 884 | u8 watch_opcode, u64 cookie, u32 gen) |
33803f33 | 885 | { |
922dab61 | 886 | struct ceph_osd_req_op *op; |
33803f33 | 887 | |
042f6498 | 888 | op = osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); |
33803f33 | 889 | op->watch.cookie = cookie; |
922dab61 | 890 | op->watch.op = watch_opcode; |
75dbb685 ID |
891 | op->watch.gen = gen; |
892 | } | |
893 | ||
894 | /* | |
895 | * prot_ver, timeout and notify payload (may be empty) should already be | |
896 | * encoded in @request_pl | |
897 | */ | |
898 | static void osd_req_op_notify_init(struct ceph_osd_request *req, int which, | |
899 | u64 cookie, struct ceph_pagelist *request_pl) | |
900 | { | |
901 | struct ceph_osd_req_op *op; | |
902 | ||
903 | op = osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); | |
904 | op->notify.cookie = cookie; | |
905 | ||
906 | ceph_osd_data_pagelist_init(&op->notify.request_data, request_pl); | |
907 | op->indata_len = request_pl->length; | |
33803f33 | 908 | } |
33803f33 | 909 | |
d3798acc ID |
910 | /* |
911 | * @flags: CEPH_OSD_OP_ALLOC_HINT_FLAG_* | |
912 | */ | |
c647b8a8 ID |
913 | void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, |
914 | unsigned int which, | |
915 | u64 expected_object_size, | |
d3798acc ID |
916 | u64 expected_write_size, |
917 | u32 flags) | |
c647b8a8 | 918 | { |
042f6498 | 919 | struct ceph_osd_req_op *op; |
c647b8a8 | 920 | |
042f6498 | 921 | op = osd_req_op_init(osd_req, which, CEPH_OSD_OP_SETALLOCHINT, 0); |
c647b8a8 ID |
922 | op->alloc_hint.expected_object_size = expected_object_size; |
923 | op->alloc_hint.expected_write_size = expected_write_size; | |
d3798acc | 924 | op->alloc_hint.flags = flags; |
c647b8a8 ID |
925 | |
926 | /* | |
927 | * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed | |
928 | * not worth a feature bit. Set FAILOK per-op flag to make | |
929 | * sure older osds don't trip over an unsupported opcode. | |
930 | */ | |
931 | op->flags |= CEPH_OSD_OP_FLAG_FAILOK; | |
932 | } | |
933 | EXPORT_SYMBOL(osd_req_op_alloc_hint_init); | |
934 | ||
90af3602 | 935 | static void ceph_osdc_msg_data_add(struct ceph_msg *msg, |
ec9123c5 AE |
936 | struct ceph_osd_data *osd_data) |
937 | { | |
938 | u64 length = ceph_osd_data_length(osd_data); | |
939 | ||
940 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { | |
941 | BUG_ON(length > (u64) SIZE_MAX); | |
942 | if (length) | |
90af3602 | 943 | ceph_msg_data_add_pages(msg, osd_data->pages, |
e8862740 | 944 | length, osd_data->alignment, false); |
ec9123c5 AE |
945 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { |
946 | BUG_ON(!length); | |
90af3602 | 947 | ceph_msg_data_add_pagelist(msg, osd_data->pagelist); |
ec9123c5 AE |
948 | #ifdef CONFIG_BLOCK |
949 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { | |
5359a17d | 950 | ceph_msg_data_add_bio(msg, &osd_data->bio_pos, length); |
ec9123c5 | 951 | #endif |
b9e281c2 ID |
952 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BVECS) { |
953 | ceph_msg_data_add_bvecs(msg, &osd_data->bvec_pos); | |
ec9123c5 AE |
954 | } else { |
955 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); | |
956 | } | |
957 | } | |
958 | ||
bb873b53 ID |
959 | static u32 osd_req_encode_op(struct ceph_osd_op *dst, |
960 | const struct ceph_osd_req_op *src) | |
a8dd0a37 | 961 | { |
a8dd0a37 AE |
962 | switch (src->op) { |
963 | case CEPH_OSD_OP_STAT: | |
964 | break; | |
965 | case CEPH_OSD_OP_READ: | |
966 | case CEPH_OSD_OP_WRITE: | |
e30b7577 | 967 | case CEPH_OSD_OP_WRITEFULL: |
ad7a60de | 968 | case CEPH_OSD_OP_ZERO: |
ad7a60de | 969 | case CEPH_OSD_OP_TRUNCATE: |
a8dd0a37 AE |
970 | dst->extent.offset = cpu_to_le64(src->extent.offset); |
971 | dst->extent.length = cpu_to_le64(src->extent.length); | |
972 | dst->extent.truncate_size = | |
973 | cpu_to_le64(src->extent.truncate_size); | |
974 | dst->extent.truncate_seq = | |
975 | cpu_to_le32(src->extent.truncate_seq); | |
976 | break; | |
977 | case CEPH_OSD_OP_CALL: | |
a8dd0a37 AE |
978 | dst->cls.class_len = src->cls.class_len; |
979 | dst->cls.method_len = src->cls.method_len; | |
bb873b53 | 980 | dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); |
a8dd0a37 | 981 | break; |
a8dd0a37 AE |
982 | case CEPH_OSD_OP_WATCH: |
983 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
922dab61 ID |
984 | dst->watch.ver = cpu_to_le64(0); |
985 | dst->watch.op = src->watch.op; | |
986 | dst->watch.gen = cpu_to_le32(src->watch.gen); | |
987 | break; | |
988 | case CEPH_OSD_OP_NOTIFY_ACK: | |
a8dd0a37 | 989 | break; |
19079203 ID |
990 | case CEPH_OSD_OP_NOTIFY: |
991 | dst->notify.cookie = cpu_to_le64(src->notify.cookie); | |
992 | break; | |
a4ed38d7 DF |
993 | case CEPH_OSD_OP_LIST_WATCHERS: |
994 | break; | |
c647b8a8 ID |
995 | case CEPH_OSD_OP_SETALLOCHINT: |
996 | dst->alloc_hint.expected_object_size = | |
997 | cpu_to_le64(src->alloc_hint.expected_object_size); | |
998 | dst->alloc_hint.expected_write_size = | |
999 | cpu_to_le64(src->alloc_hint.expected_write_size); | |
d3798acc | 1000 | dst->alloc_hint.flags = cpu_to_le32(src->alloc_hint.flags); |
c647b8a8 | 1001 | break; |
d74b50be YZ |
1002 | case CEPH_OSD_OP_SETXATTR: |
1003 | case CEPH_OSD_OP_CMPXATTR: | |
1004 | dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); | |
1005 | dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); | |
1006 | dst->xattr.cmp_op = src->xattr.cmp_op; | |
1007 | dst->xattr.cmp_mode = src->xattr.cmp_mode; | |
d74b50be | 1008 | break; |
864e9197 YZ |
1009 | case CEPH_OSD_OP_CREATE: |
1010 | case CEPH_OSD_OP_DELETE: | |
1011 | break; | |
78beb0ff | 1012 | case CEPH_OSD_OP_COPY_FROM2: |
23ddf9be LH |
1013 | dst->copy_from.snapid = cpu_to_le64(src->copy_from.snapid); |
1014 | dst->copy_from.src_version = | |
1015 | cpu_to_le64(src->copy_from.src_version); | |
1016 | dst->copy_from.flags = src->copy_from.flags; | |
1017 | dst->copy_from.src_fadvise_flags = | |
1018 | cpu_to_le32(src->copy_from.src_fadvise_flags); | |
1019 | break; | |
a8dd0a37 | 1020 | default: |
4c46459c | 1021 | pr_err("unsupported osd opcode %s\n", |
8f63ca2d | 1022 | ceph_osd_op_name(src->op)); |
4c46459c | 1023 | WARN_ON(1); |
a8dd0a37 AE |
1024 | |
1025 | return 0; | |
68b4476b | 1026 | } |
7b25bf5f | 1027 | |
a8dd0a37 | 1028 | dst->op = cpu_to_le16(src->op); |
7b25bf5f | 1029 | dst->flags = cpu_to_le32(src->flags); |
de2aa102 | 1030 | dst->payload_len = cpu_to_le32(src->indata_len); |
175face2 | 1031 | |
bb873b53 | 1032 | return src->indata_len; |
68b4476b YS |
1033 | } |
1034 | ||
3499e8a5 YS |
1035 | /* |
1036 | * build new request AND message, calculate layout, and adjust file | |
1037 | * extent as needed. | |
1038 | * | |
1039 | * if the file was recently truncated, we include information about its | |
1040 | * old and new size so that the object can be updated appropriately. (we | |
1041 | * avoid synchronously deleting truncated objects because it's slow.) | |
3499e8a5 YS |
1042 | */ |
1043 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
1044 | struct ceph_file_layout *layout, | |
1045 | struct ceph_vino vino, | |
715e4cd4 YZ |
1046 | u64 off, u64 *plen, |
1047 | unsigned int which, int num_ops, | |
3499e8a5 YS |
1048 | int opcode, int flags, |
1049 | struct ceph_snap_context *snapc, | |
3499e8a5 YS |
1050 | u32 truncate_seq, |
1051 | u64 truncate_size, | |
153e5167 | 1052 | bool use_mempool) |
3499e8a5 | 1053 | { |
68b4476b | 1054 | struct ceph_osd_request *req; |
75d1c941 AE |
1055 | u64 objnum = 0; |
1056 | u64 objoff = 0; | |
1057 | u64 objlen = 0; | |
6816282d | 1058 | int r; |
68b4476b | 1059 | |
ad7a60de | 1060 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
864e9197 YZ |
1061 | opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && |
1062 | opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); | |
68b4476b | 1063 | |
acead002 | 1064 | req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, |
ae7ca4a3 | 1065 | GFP_NOFS); |
13d1ad16 ID |
1066 | if (!req) { |
1067 | r = -ENOMEM; | |
1068 | goto fail; | |
1069 | } | |
79528734 | 1070 | |
3499e8a5 | 1071 | /* calculate max write size */ |
a19dadfb | 1072 | r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); |
13d1ad16 ID |
1073 | if (r) |
1074 | goto fail; | |
a19dadfb | 1075 | |
864e9197 | 1076 | if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { |
144cba14 | 1077 | osd_req_op_init(req, which, opcode, 0); |
864e9197 | 1078 | } else { |
7627151e | 1079 | u32 object_size = layout->object_size; |
864e9197 YZ |
1080 | u32 object_base = off - objoff; |
1081 | if (!(truncate_seq == 1 && truncate_size == -1ULL)) { | |
1082 | if (truncate_size <= object_base) { | |
1083 | truncate_size = 0; | |
1084 | } else { | |
1085 | truncate_size -= object_base; | |
1086 | if (truncate_size > object_size) | |
1087 | truncate_size = object_size; | |
1088 | } | |
ccca4e37 | 1089 | } |
715e4cd4 | 1090 | osd_req_op_extent_init(req, which, opcode, objoff, objlen, |
864e9197 YZ |
1091 | truncate_size, truncate_seq); |
1092 | } | |
d18d1e28 | 1093 | |
7627151e | 1094 | req->r_base_oloc.pool = layout->pool_id; |
30c156d9 | 1095 | req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns); |
d30291b9 | 1096 | ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); |
22d2cfdf | 1097 | req->r_flags = flags | osdc->client->options->read_from_replica; |
dbe0fc41 | 1098 | |
bb873b53 ID |
1099 | req->r_snapid = vino.snap; |
1100 | if (flags & CEPH_OSD_FLAG_WRITE) | |
1101 | req->r_data_offset = off; | |
1102 | ||
0d9c1ab3 ID |
1103 | if (num_ops > 1) |
1104 | /* | |
1105 | * This is a special case for ceph_writepages_start(), but it | |
1106 | * also covers ceph_uninline_data(). If more multi-op request | |
1107 | * use cases emerge, we will need a separate helper. | |
1108 | */ | |
1109 | r = __ceph_osdc_alloc_messages(req, GFP_NOFS, num_ops, 0); | |
1110 | else | |
1111 | r = ceph_osdc_alloc_messages(req, GFP_NOFS); | |
13d1ad16 ID |
1112 | if (r) |
1113 | goto fail; | |
1114 | ||
f24e9980 | 1115 | return req; |
13d1ad16 ID |
1116 | |
1117 | fail: | |
1118 | ceph_osdc_put_request(req); | |
1119 | return ERR_PTR(r); | |
f24e9980 | 1120 | } |
3d14c5d2 | 1121 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
1122 | |
1123 | /* | |
1124 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
1125 | */ | |
fcd00b68 | 1126 | DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) |
4609245e | 1127 | DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) |
f24e9980 | 1128 | |
66850df5 ID |
1129 | /* |
1130 | * Call @fn on each OSD request as long as @fn returns 0. | |
1131 | */ | |
1132 | static void for_each_request(struct ceph_osd_client *osdc, | |
1133 | int (*fn)(struct ceph_osd_request *req, void *arg), | |
1134 | void *arg) | |
1135 | { | |
1136 | struct rb_node *n, *p; | |
1137 | ||
1138 | for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { | |
1139 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
1140 | ||
1141 | for (p = rb_first(&osd->o_requests); p; ) { | |
1142 | struct ceph_osd_request *req = | |
1143 | rb_entry(p, struct ceph_osd_request, r_node); | |
1144 | ||
1145 | p = rb_next(p); | |
1146 | if (fn(req, arg)) | |
1147 | return; | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { | |
1152 | struct ceph_osd_request *req = | |
1153 | rb_entry(p, struct ceph_osd_request, r_node); | |
1154 | ||
1155 | p = rb_next(p); | |
1156 | if (fn(req, arg)) | |
1157 | return; | |
1158 | } | |
1159 | } | |
1160 | ||
0247a0cf ID |
1161 | static bool osd_homeless(struct ceph_osd *osd) |
1162 | { | |
1163 | return osd->o_osd == CEPH_HOMELESS_OSD; | |
1164 | } | |
1165 | ||
5aea3dcd | 1166 | static bool osd_registered(struct ceph_osd *osd) |
f24e9980 | 1167 | { |
5aea3dcd | 1168 | verify_osdc_locked(osd->o_osdc); |
f24e9980 | 1169 | |
5aea3dcd | 1170 | return !RB_EMPTY_NODE(&osd->o_node); |
f24e9980 SW |
1171 | } |
1172 | ||
0247a0cf ID |
1173 | /* |
1174 | * Assumes @osd is zero-initialized. | |
1175 | */ | |
1176 | static void osd_init(struct ceph_osd *osd) | |
1177 | { | |
02113a0f | 1178 | refcount_set(&osd->o_ref, 1); |
0247a0cf | 1179 | RB_CLEAR_NODE(&osd->o_node); |
5aea3dcd | 1180 | osd->o_requests = RB_ROOT; |
922dab61 | 1181 | osd->o_linger_requests = RB_ROOT; |
a02a946d ID |
1182 | osd->o_backoff_mappings = RB_ROOT; |
1183 | osd->o_backoffs_by_id = RB_ROOT; | |
0247a0cf ID |
1184 | INIT_LIST_HEAD(&osd->o_osd_lru); |
1185 | INIT_LIST_HEAD(&osd->o_keepalive_item); | |
1186 | osd->o_incarnation = 1; | |
5aea3dcd | 1187 | mutex_init(&osd->lock); |
0247a0cf ID |
1188 | } |
1189 | ||
1190 | static void osd_cleanup(struct ceph_osd *osd) | |
1191 | { | |
1192 | WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); | |
5aea3dcd | 1193 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); |
922dab61 | 1194 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); |
a02a946d ID |
1195 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoff_mappings)); |
1196 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoffs_by_id)); | |
0247a0cf ID |
1197 | WARN_ON(!list_empty(&osd->o_osd_lru)); |
1198 | WARN_ON(!list_empty(&osd->o_keepalive_item)); | |
1199 | ||
1200 | if (osd->o_auth.authorizer) { | |
1201 | WARN_ON(osd_homeless(osd)); | |
1202 | ceph_auth_destroy_authorizer(osd->o_auth.authorizer); | |
1203 | } | |
1204 | } | |
1205 | ||
f24e9980 SW |
1206 | /* |
1207 | * Track open sessions with osds. | |
1208 | */ | |
e10006f8 | 1209 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
1210 | { |
1211 | struct ceph_osd *osd; | |
1212 | ||
0247a0cf ID |
1213 | WARN_ON(onum == CEPH_HOMELESS_OSD); |
1214 | ||
7a28f59b | 1215 | osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); |
0247a0cf | 1216 | osd_init(osd); |
f24e9980 | 1217 | osd->o_osdc = osdc; |
e10006f8 | 1218 | osd->o_osd = onum; |
f24e9980 | 1219 | |
b7a9e5dd | 1220 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 1221 | |
f24e9980 SW |
1222 | return osd; |
1223 | } | |
1224 | ||
1225 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
1226 | { | |
02113a0f ER |
1227 | if (refcount_inc_not_zero(&osd->o_ref)) { |
1228 | dout("get_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref)-1, | |
1229 | refcount_read(&osd->o_ref)); | |
f24e9980 SW |
1230 | return osd; |
1231 | } else { | |
1232 | dout("get_osd %p FAIL\n", osd); | |
1233 | return NULL; | |
1234 | } | |
1235 | } | |
1236 | ||
1237 | static void put_osd(struct ceph_osd *osd) | |
1238 | { | |
02113a0f ER |
1239 | dout("put_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref), |
1240 | refcount_read(&osd->o_ref) - 1); | |
1241 | if (refcount_dec_and_test(&osd->o_ref)) { | |
0247a0cf | 1242 | osd_cleanup(osd); |
f24e9980 | 1243 | kfree(osd); |
79494d1b | 1244 | } |
f24e9980 SW |
1245 | } |
1246 | ||
fcd00b68 ID |
1247 | DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) |
1248 | ||
9dd2845c | 1249 | static void __move_osd_to_lru(struct ceph_osd *osd) |
f5a2041b | 1250 | { |
9dd2845c ID |
1251 | struct ceph_osd_client *osdc = osd->o_osdc; |
1252 | ||
1253 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
f5a2041b | 1254 | BUG_ON(!list_empty(&osd->o_osd_lru)); |
bbf37ec3 | 1255 | |
9dd2845c | 1256 | spin_lock(&osdc->osd_lru_lock); |
f5a2041b | 1257 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); |
9dd2845c ID |
1258 | spin_unlock(&osdc->osd_lru_lock); |
1259 | ||
a319bf56 | 1260 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; |
f5a2041b YS |
1261 | } |
1262 | ||
9dd2845c | 1263 | static void maybe_move_osd_to_lru(struct ceph_osd *osd) |
bbf37ec3 | 1264 | { |
5aea3dcd | 1265 | if (RB_EMPTY_ROOT(&osd->o_requests) && |
922dab61 | 1266 | RB_EMPTY_ROOT(&osd->o_linger_requests)) |
9dd2845c | 1267 | __move_osd_to_lru(osd); |
bbf37ec3 ID |
1268 | } |
1269 | ||
f5a2041b YS |
1270 | static void __remove_osd_from_lru(struct ceph_osd *osd) |
1271 | { | |
9dd2845c ID |
1272 | struct ceph_osd_client *osdc = osd->o_osdc; |
1273 | ||
1274 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
1275 | ||
1276 | spin_lock(&osdc->osd_lru_lock); | |
f5a2041b YS |
1277 | if (!list_empty(&osd->o_osd_lru)) |
1278 | list_del_init(&osd->o_osd_lru); | |
9dd2845c | 1279 | spin_unlock(&osdc->osd_lru_lock); |
f5a2041b YS |
1280 | } |
1281 | ||
5aea3dcd ID |
1282 | /* |
1283 | * Close the connection and assign any leftover requests to the | |
1284 | * homeless session. | |
1285 | */ | |
1286 | static void close_osd(struct ceph_osd *osd) | |
1287 | { | |
1288 | struct ceph_osd_client *osdc = osd->o_osdc; | |
1289 | struct rb_node *n; | |
1290 | ||
1291 | verify_osdc_wrlocked(osdc); | |
1292 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
1293 | ||
1294 | ceph_con_close(&osd->o_con); | |
1295 | ||
1296 | for (n = rb_first(&osd->o_requests); n; ) { | |
1297 | struct ceph_osd_request *req = | |
1298 | rb_entry(n, struct ceph_osd_request, r_node); | |
1299 | ||
1300 | n = rb_next(n); /* unlink_request() */ | |
1301 | ||
1302 | dout(" reassigning req %p tid %llu\n", req, req->r_tid); | |
1303 | unlink_request(osd, req); | |
1304 | link_request(&osdc->homeless_osd, req); | |
1305 | } | |
922dab61 ID |
1306 | for (n = rb_first(&osd->o_linger_requests); n; ) { |
1307 | struct ceph_osd_linger_request *lreq = | |
1308 | rb_entry(n, struct ceph_osd_linger_request, node); | |
1309 | ||
1310 | n = rb_next(n); /* unlink_linger() */ | |
1311 | ||
1312 | dout(" reassigning lreq %p linger_id %llu\n", lreq, | |
1313 | lreq->linger_id); | |
1314 | unlink_linger(osd, lreq); | |
1315 | link_linger(&osdc->homeless_osd, lreq); | |
1316 | } | |
a02a946d | 1317 | clear_backoffs(osd); |
5aea3dcd ID |
1318 | |
1319 | __remove_osd_from_lru(osd); | |
1320 | erase_osd(&osdc->osds, osd); | |
1321 | put_osd(osd); | |
1322 | } | |
1323 | ||
f24e9980 SW |
1324 | /* |
1325 | * reset osd connect | |
1326 | */ | |
5aea3dcd | 1327 | static int reopen_osd(struct ceph_osd *osd) |
f24e9980 | 1328 | { |
c3acb181 | 1329 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 1330 | |
5aea3dcd ID |
1331 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); |
1332 | ||
1333 | if (RB_EMPTY_ROOT(&osd->o_requests) && | |
922dab61 | 1334 | RB_EMPTY_ROOT(&osd->o_linger_requests)) { |
5aea3dcd | 1335 | close_osd(osd); |
c3acb181 AE |
1336 | return -ENODEV; |
1337 | } | |
1338 | ||
5aea3dcd | 1339 | peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; |
c3acb181 AE |
1340 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && |
1341 | !ceph_con_opened(&osd->o_con)) { | |
5aea3dcd | 1342 | struct rb_node *n; |
c3acb181 | 1343 | |
0b4af2e8 ID |
1344 | dout("osd addr hasn't changed and connection never opened, " |
1345 | "letting msgr retry\n"); | |
87b315a5 | 1346 | /* touch each r_stamp for handle_timeout()'s benfit */ |
5aea3dcd ID |
1347 | for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { |
1348 | struct ceph_osd_request *req = | |
1349 | rb_entry(n, struct ceph_osd_request, r_node); | |
87b315a5 | 1350 | req->r_stamp = jiffies; |
5aea3dcd | 1351 | } |
c3acb181 AE |
1352 | |
1353 | return -EAGAIN; | |
f24e9980 | 1354 | } |
c3acb181 AE |
1355 | |
1356 | ceph_con_close(&osd->o_con); | |
1357 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
1358 | osd->o_incarnation++; | |
1359 | ||
1360 | return 0; | |
f24e9980 SW |
1361 | } |
1362 | ||
5aea3dcd ID |
1363 | static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, |
1364 | bool wrlocked) | |
f24e9980 | 1365 | { |
5aea3dcd | 1366 | struct ceph_osd *osd; |
35f9f8a0 | 1367 | |
5aea3dcd ID |
1368 | if (wrlocked) |
1369 | verify_osdc_wrlocked(osdc); | |
1370 | else | |
1371 | verify_osdc_locked(osdc); | |
f24e9980 | 1372 | |
5aea3dcd ID |
1373 | if (o != CEPH_HOMELESS_OSD) |
1374 | osd = lookup_osd(&osdc->osds, o); | |
1375 | else | |
1376 | osd = &osdc->homeless_osd; | |
1377 | if (!osd) { | |
1378 | if (!wrlocked) | |
1379 | return ERR_PTR(-EAGAIN); | |
0ba6478d | 1380 | |
5aea3dcd ID |
1381 | osd = create_osd(osdc, o); |
1382 | insert_osd(&osdc->osds, osd); | |
1383 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, | |
1384 | &osdc->osdmap->osd_addr[osd->o_osd]); | |
0ba6478d | 1385 | } |
f24e9980 | 1386 | |
5aea3dcd ID |
1387 | dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); |
1388 | return osd; | |
f24e9980 SW |
1389 | } |
1390 | ||
1391 | /* | |
5aea3dcd ID |
1392 | * Create request <-> OSD session relation. |
1393 | * | |
1394 | * @req has to be assigned a tid, @osd may be homeless. | |
f24e9980 | 1395 | */ |
5aea3dcd | 1396 | static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) |
f24e9980 | 1397 | { |
5aea3dcd ID |
1398 | verify_osd_locked(osd); |
1399 | WARN_ON(!req->r_tid || req->r_osd); | |
1400 | dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, | |
1401 | req, req->r_tid); | |
1402 | ||
1403 | if (!osd_homeless(osd)) | |
1404 | __remove_osd_from_lru(osd); | |
1405 | else | |
1406 | atomic_inc(&osd->o_osdc->num_homeless); | |
1407 | ||
1408 | get_osd(osd); | |
1409 | insert_request(&osd->o_requests, req); | |
1410 | req->r_osd = osd; | |
f24e9980 SW |
1411 | } |
1412 | ||
5aea3dcd ID |
1413 | static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) |
1414 | { | |
1415 | verify_osd_locked(osd); | |
1416 | WARN_ON(req->r_osd != osd); | |
1417 | dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, | |
1418 | req, req->r_tid); | |
1419 | ||
1420 | req->r_osd = NULL; | |
1421 | erase_request(&osd->o_requests, req); | |
1422 | put_osd(osd); | |
1423 | ||
1424 | if (!osd_homeless(osd)) | |
1425 | maybe_move_osd_to_lru(osd); | |
1426 | else | |
1427 | atomic_dec(&osd->o_osdc->num_homeless); | |
1428 | } | |
1429 | ||
63244fa1 ID |
1430 | static bool __pool_full(struct ceph_pg_pool_info *pi) |
1431 | { | |
1432 | return pi->flags & CEPH_POOL_FLAG_FULL; | |
1433 | } | |
1434 | ||
42c1b124 ID |
1435 | static bool have_pool_full(struct ceph_osd_client *osdc) |
1436 | { | |
1437 | struct rb_node *n; | |
1438 | ||
1439 | for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { | |
1440 | struct ceph_pg_pool_info *pi = | |
1441 | rb_entry(n, struct ceph_pg_pool_info, node); | |
1442 | ||
1443 | if (__pool_full(pi)) | |
1444 | return true; | |
1445 | } | |
1446 | ||
1447 | return false; | |
1448 | } | |
1449 | ||
5aea3dcd ID |
1450 | static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) |
1451 | { | |
1452 | struct ceph_pg_pool_info *pi; | |
1453 | ||
1454 | pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); | |
1455 | if (!pi) | |
1456 | return false; | |
1457 | ||
1458 | return __pool_full(pi); | |
1459 | } | |
1460 | ||
d29adb34 JD |
1461 | /* |
1462 | * Returns whether a request should be blocked from being sent | |
1463 | * based on the current osdmap and osd_client settings. | |
d29adb34 | 1464 | */ |
63244fa1 ID |
1465 | static bool target_should_be_paused(struct ceph_osd_client *osdc, |
1466 | const struct ceph_osd_request_target *t, | |
1467 | struct ceph_pg_pool_info *pi) | |
1468 | { | |
b7ec35b3 ID |
1469 | bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); |
1470 | bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || | |
1471 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || | |
63244fa1 ID |
1472 | __pool_full(pi); |
1473 | ||
6d637a54 | 1474 | WARN_ON(pi->id != t->target_oloc.pool); |
58eb7932 JL |
1475 | return ((t->flags & CEPH_OSD_FLAG_READ) && pauserd) || |
1476 | ((t->flags & CEPH_OSD_FLAG_WRITE) && pausewr) || | |
1477 | (osdc->osdmap->epoch < osdc->epoch_barrier); | |
63244fa1 ID |
1478 | } |
1479 | ||
117d96a0 ID |
1480 | static int pick_random_replica(const struct ceph_osds *acting) |
1481 | { | |
8032bf12 | 1482 | int i = get_random_u32_below(acting->size); |
117d96a0 ID |
1483 | |
1484 | dout("%s picked osd%d, primary osd%d\n", __func__, | |
1485 | acting->osds[i], acting->primary); | |
1486 | return i; | |
1487 | } | |
1488 | ||
1489 | /* | |
1490 | * Picks the closest replica based on client's location given by | |
1491 | * crush_location option. Prefers the primary if the locality is | |
1492 | * the same. | |
1493 | */ | |
1494 | static int pick_closest_replica(struct ceph_osd_client *osdc, | |
1495 | const struct ceph_osds *acting) | |
1496 | { | |
1497 | struct ceph_options *opt = osdc->client->options; | |
1498 | int best_i, best_locality; | |
1499 | int i = 0, locality; | |
1500 | ||
1501 | do { | |
1502 | locality = ceph_get_crush_locality(osdc->osdmap, | |
1503 | acting->osds[i], | |
1504 | &opt->crush_locs); | |
1505 | if (i == 0 || | |
1506 | (locality >= 0 && best_locality < 0) || | |
1507 | (locality >= 0 && best_locality >= 0 && | |
1508 | locality < best_locality)) { | |
1509 | best_i = i; | |
1510 | best_locality = locality; | |
1511 | } | |
1512 | } while (++i < acting->size); | |
1513 | ||
1514 | dout("%s picked osd%d with locality %d, primary osd%d\n", __func__, | |
1515 | acting->osds[best_i], best_locality, acting->primary); | |
1516 | return best_i; | |
1517 | } | |
1518 | ||
63244fa1 ID |
1519 | enum calc_target_result { |
1520 | CALC_TARGET_NO_ACTION = 0, | |
1521 | CALC_TARGET_NEED_RESEND, | |
1522 | CALC_TARGET_POOL_DNE, | |
1523 | }; | |
1524 | ||
1525 | static enum calc_target_result calc_target(struct ceph_osd_client *osdc, | |
1526 | struct ceph_osd_request_target *t, | |
63244fa1 ID |
1527 | bool any_change) |
1528 | { | |
1529 | struct ceph_pg_pool_info *pi; | |
1530 | struct ceph_pg pgid, last_pgid; | |
1531 | struct ceph_osds up, acting; | |
117d96a0 ID |
1532 | bool is_read = t->flags & CEPH_OSD_FLAG_READ; |
1533 | bool is_write = t->flags & CEPH_OSD_FLAG_WRITE; | |
63244fa1 | 1534 | bool force_resend = false; |
84ed45df | 1535 | bool unpaused = false; |
a5613724 | 1536 | bool legacy_change = false; |
7de030d6 | 1537 | bool split = false; |
b7ec35b3 | 1538 | bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); |
ae78dd81 ID |
1539 | bool recovery_deletes = ceph_osdmap_flag(osdc, |
1540 | CEPH_OSDMAP_RECOVERY_DELETES); | |
63244fa1 | 1541 | enum calc_target_result ct_res; |
63244fa1 | 1542 | |
04c7d789 | 1543 | t->epoch = osdc->osdmap->epoch; |
63244fa1 ID |
1544 | pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); |
1545 | if (!pi) { | |
1546 | t->osd = CEPH_HOMELESS_OSD; | |
1547 | ct_res = CALC_TARGET_POOL_DNE; | |
1548 | goto out; | |
1549 | } | |
1550 | ||
1551 | if (osdc->osdmap->epoch == pi->last_force_request_resend) { | |
dc93e0e2 ID |
1552 | if (t->last_force_resend < pi->last_force_request_resend) { |
1553 | t->last_force_resend = pi->last_force_request_resend; | |
63244fa1 | 1554 | force_resend = true; |
dc93e0e2 | 1555 | } else if (t->last_force_resend == 0) { |
63244fa1 ID |
1556 | force_resend = true; |
1557 | } | |
1558 | } | |
63244fa1 | 1559 | |
db098ec4 ID |
1560 | /* apply tiering */ |
1561 | ceph_oid_copy(&t->target_oid, &t->base_oid); | |
1562 | ceph_oloc_copy(&t->target_oloc, &t->base_oloc); | |
1563 | if ((t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { | |
117d96a0 | 1564 | if (is_read && pi->read_tier >= 0) |
63244fa1 | 1565 | t->target_oloc.pool = pi->read_tier; |
117d96a0 | 1566 | if (is_write && pi->write_tier >= 0) |
63244fa1 | 1567 | t->target_oloc.pool = pi->write_tier; |
6d637a54 ID |
1568 | |
1569 | pi = ceph_pg_pool_by_id(osdc->osdmap, t->target_oloc.pool); | |
1570 | if (!pi) { | |
1571 | t->osd = CEPH_HOMELESS_OSD; | |
1572 | ct_res = CALC_TARGET_POOL_DNE; | |
1573 | goto out; | |
1574 | } | |
63244fa1 ID |
1575 | } |
1576 | ||
a86f009f | 1577 | __ceph_object_locator_to_pg(pi, &t->target_oid, &t->target_oloc, &pgid); |
63244fa1 ID |
1578 | last_pgid.pool = pgid.pool; |
1579 | last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); | |
1580 | ||
df28152d | 1581 | ceph_pg_to_up_acting_osds(osdc->osdmap, pi, &pgid, &up, &acting); |
63244fa1 ID |
1582 | if (any_change && |
1583 | ceph_is_new_interval(&t->acting, | |
1584 | &acting, | |
1585 | &t->up, | |
1586 | &up, | |
1587 | t->size, | |
1588 | pi->size, | |
1589 | t->min_size, | |
1590 | pi->min_size, | |
1591 | t->pg_num, | |
1592 | pi->pg_num, | |
1593 | t->sort_bitwise, | |
1594 | sort_bitwise, | |
ae78dd81 ID |
1595 | t->recovery_deletes, |
1596 | recovery_deletes, | |
63244fa1 ID |
1597 | &last_pgid)) |
1598 | force_resend = true; | |
1599 | ||
1600 | if (t->paused && !target_should_be_paused(osdc, t, pi)) { | |
1601 | t->paused = false; | |
84ed45df | 1602 | unpaused = true; |
63244fa1 | 1603 | } |
84ed45df | 1604 | legacy_change = ceph_pg_compare(&t->pgid, &pgid) || |
117d96a0 ID |
1605 | ceph_osds_changed(&t->acting, &acting, |
1606 | t->used_replica || any_change); | |
7de030d6 ID |
1607 | if (t->pg_num) |
1608 | split = ceph_pg_is_split(&last_pgid, t->pg_num, pi->pg_num); | |
63244fa1 | 1609 | |
7de030d6 | 1610 | if (legacy_change || force_resend || split) { |
63244fa1 | 1611 | t->pgid = pgid; /* struct */ |
df28152d | 1612 | ceph_pg_to_primary_shard(osdc->osdmap, pi, &pgid, &t->spgid); |
63244fa1 ID |
1613 | ceph_osds_copy(&t->acting, &acting); |
1614 | ceph_osds_copy(&t->up, &up); | |
1615 | t->size = pi->size; | |
1616 | t->min_size = pi->min_size; | |
1617 | t->pg_num = pi->pg_num; | |
1618 | t->pg_num_mask = pi->pg_num_mask; | |
1619 | t->sort_bitwise = sort_bitwise; | |
ae78dd81 | 1620 | t->recovery_deletes = recovery_deletes; |
63244fa1 | 1621 | |
117d96a0 ID |
1622 | if ((t->flags & (CEPH_OSD_FLAG_BALANCE_READS | |
1623 | CEPH_OSD_FLAG_LOCALIZE_READS)) && | |
1624 | !is_write && pi->type == CEPH_POOL_TYPE_REP && | |
1625 | acting.size > 1) { | |
1626 | int pos; | |
1627 | ||
1628 | WARN_ON(!is_read || acting.osds[0] != acting.primary); | |
1629 | if (t->flags & CEPH_OSD_FLAG_BALANCE_READS) { | |
1630 | pos = pick_random_replica(&acting); | |
1631 | } else { | |
1632 | pos = pick_closest_replica(osdc, &acting); | |
1633 | } | |
1634 | t->osd = acting.osds[pos]; | |
1635 | t->used_replica = pos > 0; | |
1636 | } else { | |
1637 | t->osd = acting.primary; | |
1638 | t->used_replica = false; | |
1639 | } | |
63244fa1 ID |
1640 | } |
1641 | ||
a5613724 | 1642 | if (unpaused || legacy_change || force_resend || split) |
84ed45df ID |
1643 | ct_res = CALC_TARGET_NEED_RESEND; |
1644 | else | |
1645 | ct_res = CALC_TARGET_NO_ACTION; | |
1646 | ||
63244fa1 | 1647 | out: |
a5613724 ID |
1648 | dout("%s t %p -> %d%d%d%d ct_res %d osd%d\n", __func__, t, unpaused, |
1649 | legacy_change, force_resend, split, ct_res, t->osd); | |
63244fa1 ID |
1650 | return ct_res; |
1651 | } | |
1652 | ||
a02a946d ID |
1653 | static struct ceph_spg_mapping *alloc_spg_mapping(void) |
1654 | { | |
1655 | struct ceph_spg_mapping *spg; | |
1656 | ||
1657 | spg = kmalloc(sizeof(*spg), GFP_NOIO); | |
1658 | if (!spg) | |
1659 | return NULL; | |
1660 | ||
1661 | RB_CLEAR_NODE(&spg->node); | |
1662 | spg->backoffs = RB_ROOT; | |
1663 | return spg; | |
1664 | } | |
1665 | ||
1666 | static void free_spg_mapping(struct ceph_spg_mapping *spg) | |
1667 | { | |
1668 | WARN_ON(!RB_EMPTY_NODE(&spg->node)); | |
1669 | WARN_ON(!RB_EMPTY_ROOT(&spg->backoffs)); | |
1670 | ||
1671 | kfree(spg); | |
1672 | } | |
1673 | ||
1674 | /* | |
1675 | * rbtree of ceph_spg_mapping for handling map<spg_t, ...>, similar to | |
1676 | * ceph_pg_mapping. Used to track OSD backoffs -- a backoff [range] is | |
1677 | * defined only within a specific spgid; it does not pass anything to | |
1678 | * children on split, or to another primary. | |
1679 | */ | |
1680 | DEFINE_RB_FUNCS2(spg_mapping, struct ceph_spg_mapping, spgid, ceph_spg_compare, | |
1681 | RB_BYPTR, const struct ceph_spg *, node) | |
1682 | ||
1683 | static u64 hoid_get_bitwise_key(const struct ceph_hobject_id *hoid) | |
1684 | { | |
1685 | return hoid->is_max ? 0x100000000ull : hoid->hash_reverse_bits; | |
1686 | } | |
1687 | ||
1688 | static void hoid_get_effective_key(const struct ceph_hobject_id *hoid, | |
1689 | void **pkey, size_t *pkey_len) | |
1690 | { | |
1691 | if (hoid->key_len) { | |
1692 | *pkey = hoid->key; | |
1693 | *pkey_len = hoid->key_len; | |
1694 | } else { | |
1695 | *pkey = hoid->oid; | |
1696 | *pkey_len = hoid->oid_len; | |
1697 | } | |
1698 | } | |
1699 | ||
1700 | static int compare_names(const void *name1, size_t name1_len, | |
1701 | const void *name2, size_t name2_len) | |
1702 | { | |
1703 | int ret; | |
1704 | ||
1705 | ret = memcmp(name1, name2, min(name1_len, name2_len)); | |
1706 | if (!ret) { | |
1707 | if (name1_len < name2_len) | |
1708 | ret = -1; | |
1709 | else if (name1_len > name2_len) | |
1710 | ret = 1; | |
1711 | } | |
1712 | return ret; | |
1713 | } | |
1714 | ||
1715 | static int hoid_compare(const struct ceph_hobject_id *lhs, | |
1716 | const struct ceph_hobject_id *rhs) | |
1717 | { | |
1718 | void *effective_key1, *effective_key2; | |
1719 | size_t effective_key1_len, effective_key2_len; | |
1720 | int ret; | |
1721 | ||
1722 | if (lhs->is_max < rhs->is_max) | |
1723 | return -1; | |
1724 | if (lhs->is_max > rhs->is_max) | |
1725 | return 1; | |
1726 | ||
1727 | if (lhs->pool < rhs->pool) | |
1728 | return -1; | |
1729 | if (lhs->pool > rhs->pool) | |
1730 | return 1; | |
1731 | ||
1732 | if (hoid_get_bitwise_key(lhs) < hoid_get_bitwise_key(rhs)) | |
1733 | return -1; | |
1734 | if (hoid_get_bitwise_key(lhs) > hoid_get_bitwise_key(rhs)) | |
1735 | return 1; | |
1736 | ||
1737 | ret = compare_names(lhs->nspace, lhs->nspace_len, | |
1738 | rhs->nspace, rhs->nspace_len); | |
1739 | if (ret) | |
1740 | return ret; | |
1741 | ||
1742 | hoid_get_effective_key(lhs, &effective_key1, &effective_key1_len); | |
1743 | hoid_get_effective_key(rhs, &effective_key2, &effective_key2_len); | |
1744 | ret = compare_names(effective_key1, effective_key1_len, | |
1745 | effective_key2, effective_key2_len); | |
1746 | if (ret) | |
1747 | return ret; | |
1748 | ||
1749 | ret = compare_names(lhs->oid, lhs->oid_len, rhs->oid, rhs->oid_len); | |
1750 | if (ret) | |
1751 | return ret; | |
1752 | ||
1753 | if (lhs->snapid < rhs->snapid) | |
1754 | return -1; | |
1755 | if (lhs->snapid > rhs->snapid) | |
1756 | return 1; | |
1757 | ||
1758 | return 0; | |
1759 | } | |
1760 | ||
1761 | /* | |
1762 | * For decoding ->begin and ->end of MOSDBackoff only -- no MIN/MAX | |
1763 | * compat stuff here. | |
1764 | * | |
1765 | * Assumes @hoid is zero-initialized. | |
1766 | */ | |
1767 | static int decode_hoid(void **p, void *end, struct ceph_hobject_id *hoid) | |
1768 | { | |
1769 | u8 struct_v; | |
1770 | u32 struct_len; | |
1771 | int ret; | |
1772 | ||
1773 | ret = ceph_start_decoding(p, end, 4, "hobject_t", &struct_v, | |
1774 | &struct_len); | |
1775 | if (ret) | |
1776 | return ret; | |
1777 | ||
1778 | if (struct_v < 4) { | |
1779 | pr_err("got struct_v %d < 4 of hobject_t\n", struct_v); | |
1780 | goto e_inval; | |
1781 | } | |
1782 | ||
1783 | hoid->key = ceph_extract_encoded_string(p, end, &hoid->key_len, | |
1784 | GFP_NOIO); | |
1785 | if (IS_ERR(hoid->key)) { | |
1786 | ret = PTR_ERR(hoid->key); | |
1787 | hoid->key = NULL; | |
1788 | return ret; | |
1789 | } | |
1790 | ||
1791 | hoid->oid = ceph_extract_encoded_string(p, end, &hoid->oid_len, | |
1792 | GFP_NOIO); | |
1793 | if (IS_ERR(hoid->oid)) { | |
1794 | ret = PTR_ERR(hoid->oid); | |
1795 | hoid->oid = NULL; | |
1796 | return ret; | |
1797 | } | |
1798 | ||
1799 | ceph_decode_64_safe(p, end, hoid->snapid, e_inval); | |
1800 | ceph_decode_32_safe(p, end, hoid->hash, e_inval); | |
1801 | ceph_decode_8_safe(p, end, hoid->is_max, e_inval); | |
1802 | ||
1803 | hoid->nspace = ceph_extract_encoded_string(p, end, &hoid->nspace_len, | |
1804 | GFP_NOIO); | |
1805 | if (IS_ERR(hoid->nspace)) { | |
1806 | ret = PTR_ERR(hoid->nspace); | |
1807 | hoid->nspace = NULL; | |
1808 | return ret; | |
1809 | } | |
1810 | ||
1811 | ceph_decode_64_safe(p, end, hoid->pool, e_inval); | |
1812 | ||
1813 | ceph_hoid_build_hash_cache(hoid); | |
1814 | return 0; | |
1815 | ||
1816 | e_inval: | |
1817 | return -EINVAL; | |
1818 | } | |
1819 | ||
1820 | static int hoid_encoding_size(const struct ceph_hobject_id *hoid) | |
1821 | { | |
1822 | return 8 + 4 + 1 + 8 + /* snapid, hash, is_max, pool */ | |
1823 | 4 + hoid->key_len + 4 + hoid->oid_len + 4 + hoid->nspace_len; | |
1824 | } | |
1825 | ||
1826 | static void encode_hoid(void **p, void *end, const struct ceph_hobject_id *hoid) | |
1827 | { | |
1828 | ceph_start_encoding(p, 4, 3, hoid_encoding_size(hoid)); | |
1829 | ceph_encode_string(p, end, hoid->key, hoid->key_len); | |
1830 | ceph_encode_string(p, end, hoid->oid, hoid->oid_len); | |
1831 | ceph_encode_64(p, hoid->snapid); | |
1832 | ceph_encode_32(p, hoid->hash); | |
1833 | ceph_encode_8(p, hoid->is_max); | |
1834 | ceph_encode_string(p, end, hoid->nspace, hoid->nspace_len); | |
1835 | ceph_encode_64(p, hoid->pool); | |
1836 | } | |
1837 | ||
1838 | static void free_hoid(struct ceph_hobject_id *hoid) | |
1839 | { | |
1840 | if (hoid) { | |
1841 | kfree(hoid->key); | |
1842 | kfree(hoid->oid); | |
1843 | kfree(hoid->nspace); | |
1844 | kfree(hoid); | |
1845 | } | |
1846 | } | |
1847 | ||
1848 | static struct ceph_osd_backoff *alloc_backoff(void) | |
1849 | { | |
1850 | struct ceph_osd_backoff *backoff; | |
1851 | ||
1852 | backoff = kzalloc(sizeof(*backoff), GFP_NOIO); | |
1853 | if (!backoff) | |
1854 | return NULL; | |
1855 | ||
1856 | RB_CLEAR_NODE(&backoff->spg_node); | |
1857 | RB_CLEAR_NODE(&backoff->id_node); | |
1858 | return backoff; | |
1859 | } | |
1860 | ||
1861 | static void free_backoff(struct ceph_osd_backoff *backoff) | |
1862 | { | |
1863 | WARN_ON(!RB_EMPTY_NODE(&backoff->spg_node)); | |
1864 | WARN_ON(!RB_EMPTY_NODE(&backoff->id_node)); | |
1865 | ||
1866 | free_hoid(backoff->begin); | |
1867 | free_hoid(backoff->end); | |
1868 | kfree(backoff); | |
1869 | } | |
1870 | ||
1871 | /* | |
1872 | * Within a specific spgid, backoffs are managed by ->begin hoid. | |
1873 | */ | |
1874 | DEFINE_RB_INSDEL_FUNCS2(backoff, struct ceph_osd_backoff, begin, hoid_compare, | |
1875 | RB_BYVAL, spg_node); | |
1876 | ||
1877 | static struct ceph_osd_backoff *lookup_containing_backoff(struct rb_root *root, | |
1878 | const struct ceph_hobject_id *hoid) | |
1879 | { | |
1880 | struct rb_node *n = root->rb_node; | |
1881 | ||
1882 | while (n) { | |
1883 | struct ceph_osd_backoff *cur = | |
1884 | rb_entry(n, struct ceph_osd_backoff, spg_node); | |
1885 | int cmp; | |
1886 | ||
1887 | cmp = hoid_compare(hoid, cur->begin); | |
1888 | if (cmp < 0) { | |
1889 | n = n->rb_left; | |
1890 | } else if (cmp > 0) { | |
1891 | if (hoid_compare(hoid, cur->end) < 0) | |
1892 | return cur; | |
1893 | ||
1894 | n = n->rb_right; | |
1895 | } else { | |
1896 | return cur; | |
1897 | } | |
1898 | } | |
1899 | ||
1900 | return NULL; | |
1901 | } | |
1902 | ||
1903 | /* | |
1904 | * Each backoff has a unique id within its OSD session. | |
1905 | */ | |
1906 | DEFINE_RB_FUNCS(backoff_by_id, struct ceph_osd_backoff, id, id_node) | |
1907 | ||
1908 | static void clear_backoffs(struct ceph_osd *osd) | |
1909 | { | |
1910 | while (!RB_EMPTY_ROOT(&osd->o_backoff_mappings)) { | |
1911 | struct ceph_spg_mapping *spg = | |
1912 | rb_entry(rb_first(&osd->o_backoff_mappings), | |
1913 | struct ceph_spg_mapping, node); | |
1914 | ||
1915 | while (!RB_EMPTY_ROOT(&spg->backoffs)) { | |
1916 | struct ceph_osd_backoff *backoff = | |
1917 | rb_entry(rb_first(&spg->backoffs), | |
1918 | struct ceph_osd_backoff, spg_node); | |
1919 | ||
1920 | erase_backoff(&spg->backoffs, backoff); | |
1921 | erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); | |
1922 | free_backoff(backoff); | |
1923 | } | |
1924 | erase_spg_mapping(&osd->o_backoff_mappings, spg); | |
1925 | free_spg_mapping(spg); | |
1926 | } | |
1927 | } | |
1928 | ||
1929 | /* | |
1930 | * Set up a temporary, non-owning view into @t. | |
1931 | */ | |
1932 | static void hoid_fill_from_target(struct ceph_hobject_id *hoid, | |
1933 | const struct ceph_osd_request_target *t) | |
1934 | { | |
1935 | hoid->key = NULL; | |
1936 | hoid->key_len = 0; | |
1937 | hoid->oid = t->target_oid.name; | |
1938 | hoid->oid_len = t->target_oid.name_len; | |
1939 | hoid->snapid = CEPH_NOSNAP; | |
1940 | hoid->hash = t->pgid.seed; | |
1941 | hoid->is_max = false; | |
1942 | if (t->target_oloc.pool_ns) { | |
1943 | hoid->nspace = t->target_oloc.pool_ns->str; | |
1944 | hoid->nspace_len = t->target_oloc.pool_ns->len; | |
1945 | } else { | |
1946 | hoid->nspace = NULL; | |
1947 | hoid->nspace_len = 0; | |
1948 | } | |
1949 | hoid->pool = t->target_oloc.pool; | |
1950 | ceph_hoid_build_hash_cache(hoid); | |
1951 | } | |
1952 | ||
1953 | static bool should_plug_request(struct ceph_osd_request *req) | |
1954 | { | |
1955 | struct ceph_osd *osd = req->r_osd; | |
1956 | struct ceph_spg_mapping *spg; | |
1957 | struct ceph_osd_backoff *backoff; | |
1958 | struct ceph_hobject_id hoid; | |
1959 | ||
1960 | spg = lookup_spg_mapping(&osd->o_backoff_mappings, &req->r_t.spgid); | |
1961 | if (!spg) | |
1962 | return false; | |
1963 | ||
1964 | hoid_fill_from_target(&hoid, &req->r_t); | |
1965 | backoff = lookup_containing_backoff(&spg->backoffs, &hoid); | |
1966 | if (!backoff) | |
1967 | return false; | |
1968 | ||
1969 | dout("%s req %p tid %llu backoff osd%d spgid %llu.%xs%d id %llu\n", | |
1970 | __func__, req, req->r_tid, osd->o_osd, backoff->spgid.pgid.pool, | |
1971 | backoff->spgid.pgid.seed, backoff->spgid.shard, backoff->id); | |
1972 | return true; | |
1973 | } | |
1974 | ||
0d9c1ab3 ID |
1975 | /* |
1976 | * Keep get_num_data_items() in sync with this function. | |
1977 | */ | |
98c4bfe9 | 1978 | static void setup_request_data(struct ceph_osd_request *req) |
f24e9980 | 1979 | { |
98c4bfe9 ID |
1980 | struct ceph_msg *request_msg = req->r_request; |
1981 | struct ceph_msg *reply_msg = req->r_reply; | |
1982 | struct ceph_osd_req_op *op; | |
bb873b53 | 1983 | |
98c4bfe9 | 1984 | if (req->r_request->num_data_items || req->r_reply->num_data_items) |
bb873b53 | 1985 | return; |
f24e9980 | 1986 | |
98c4bfe9 ID |
1987 | WARN_ON(request_msg->data_length || reply_msg->data_length); |
1988 | for (op = req->r_ops; op != &req->r_ops[req->r_num_ops]; op++) { | |
bb873b53 ID |
1989 | switch (op->op) { |
1990 | /* request */ | |
1991 | case CEPH_OSD_OP_WRITE: | |
1992 | case CEPH_OSD_OP_WRITEFULL: | |
1993 | WARN_ON(op->indata_len != op->extent.length); | |
98c4bfe9 ID |
1994 | ceph_osdc_msg_data_add(request_msg, |
1995 | &op->extent.osd_data); | |
bb873b53 ID |
1996 | break; |
1997 | case CEPH_OSD_OP_SETXATTR: | |
1998 | case CEPH_OSD_OP_CMPXATTR: | |
1999 | WARN_ON(op->indata_len != op->xattr.name_len + | |
2000 | op->xattr.value_len); | |
98c4bfe9 ID |
2001 | ceph_osdc_msg_data_add(request_msg, |
2002 | &op->xattr.osd_data); | |
bb873b53 | 2003 | break; |
922dab61 | 2004 | case CEPH_OSD_OP_NOTIFY_ACK: |
98c4bfe9 | 2005 | ceph_osdc_msg_data_add(request_msg, |
922dab61 ID |
2006 | &op->notify_ack.request_data); |
2007 | break; | |
78beb0ff | 2008 | case CEPH_OSD_OP_COPY_FROM2: |
23ddf9be LH |
2009 | ceph_osdc_msg_data_add(request_msg, |
2010 | &op->copy_from.osd_data); | |
2011 | break; | |
bb873b53 ID |
2012 | |
2013 | /* reply */ | |
2014 | case CEPH_OSD_OP_STAT: | |
98c4bfe9 | 2015 | ceph_osdc_msg_data_add(reply_msg, |
bb873b53 ID |
2016 | &op->raw_data_in); |
2017 | break; | |
2018 | case CEPH_OSD_OP_READ: | |
98c4bfe9 | 2019 | ceph_osdc_msg_data_add(reply_msg, |
bb873b53 ID |
2020 | &op->extent.osd_data); |
2021 | break; | |
a4ed38d7 | 2022 | case CEPH_OSD_OP_LIST_WATCHERS: |
98c4bfe9 | 2023 | ceph_osdc_msg_data_add(reply_msg, |
a4ed38d7 DF |
2024 | &op->list_watchers.response_data); |
2025 | break; | |
bb873b53 ID |
2026 | |
2027 | /* both */ | |
2028 | case CEPH_OSD_OP_CALL: | |
2029 | WARN_ON(op->indata_len != op->cls.class_len + | |
2030 | op->cls.method_len + | |
2031 | op->cls.indata_len); | |
98c4bfe9 ID |
2032 | ceph_osdc_msg_data_add(request_msg, |
2033 | &op->cls.request_info); | |
bb873b53 | 2034 | /* optional, can be NONE */ |
98c4bfe9 ID |
2035 | ceph_osdc_msg_data_add(request_msg, |
2036 | &op->cls.request_data); | |
bb873b53 | 2037 | /* optional, can be NONE */ |
98c4bfe9 | 2038 | ceph_osdc_msg_data_add(reply_msg, |
bb873b53 ID |
2039 | &op->cls.response_data); |
2040 | break; | |
19079203 | 2041 | case CEPH_OSD_OP_NOTIFY: |
98c4bfe9 | 2042 | ceph_osdc_msg_data_add(request_msg, |
19079203 | 2043 | &op->notify.request_data); |
98c4bfe9 | 2044 | ceph_osdc_msg_data_add(reply_msg, |
19079203 ID |
2045 | &op->notify.response_data); |
2046 | break; | |
bb873b53 | 2047 | } |
bb873b53 | 2048 | } |
bb873b53 ID |
2049 | } |
2050 | ||
2e59ffd1 ID |
2051 | static void encode_pgid(void **p, const struct ceph_pg *pgid) |
2052 | { | |
2053 | ceph_encode_8(p, 1); | |
2054 | ceph_encode_64(p, pgid->pool); | |
2055 | ceph_encode_32(p, pgid->seed); | |
2056 | ceph_encode_32(p, -1); /* preferred */ | |
2057 | } | |
2058 | ||
8cb441c0 ID |
2059 | static void encode_spgid(void **p, const struct ceph_spg *spgid) |
2060 | { | |
2061 | ceph_start_encoding(p, 1, 1, CEPH_PGID_ENCODING_LEN + 1); | |
2062 | encode_pgid(p, &spgid->pgid); | |
2063 | ceph_encode_8(p, spgid->shard); | |
2064 | } | |
2065 | ||
2e59ffd1 ID |
2066 | static void encode_oloc(void **p, void *end, |
2067 | const struct ceph_object_locator *oloc) | |
2068 | { | |
2069 | ceph_start_encoding(p, 5, 4, ceph_oloc_encoding_size(oloc)); | |
2070 | ceph_encode_64(p, oloc->pool); | |
2071 | ceph_encode_32(p, -1); /* preferred */ | |
2072 | ceph_encode_32(p, 0); /* key len */ | |
2073 | if (oloc->pool_ns) | |
2074 | ceph_encode_string(p, end, oloc->pool_ns->str, | |
2075 | oloc->pool_ns->len); | |
2076 | else | |
2077 | ceph_encode_32(p, 0); | |
2078 | } | |
2079 | ||
8cb441c0 ID |
2080 | static void encode_request_partial(struct ceph_osd_request *req, |
2081 | struct ceph_msg *msg) | |
bb873b53 ID |
2082 | { |
2083 | void *p = msg->front.iov_base; | |
2084 | void *const end = p + msg->front_alloc_len; | |
2085 | u32 data_len = 0; | |
2086 | int i; | |
2087 | ||
2088 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) { | |
2089 | /* snapshots aren't writeable */ | |
2090 | WARN_ON(req->r_snapid != CEPH_NOSNAP); | |
2091 | } else { | |
2092 | WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || | |
2093 | req->r_data_offset || req->r_snapc); | |
2094 | } | |
2095 | ||
98c4bfe9 | 2096 | setup_request_data(req); |
bb873b53 | 2097 | |
8cb441c0 ID |
2098 | encode_spgid(&p, &req->r_t.spgid); /* actual spg */ |
2099 | ceph_encode_32(&p, req->r_t.pgid.seed); /* raw hash */ | |
bb873b53 ID |
2100 | ceph_encode_32(&p, req->r_osdc->osdmap->epoch); |
2101 | ceph_encode_32(&p, req->r_flags); | |
8cb441c0 ID |
2102 | |
2103 | /* reqid */ | |
2104 | ceph_start_encoding(&p, 2, 2, sizeof(struct ceph_osd_reqid)); | |
2105 | memset(p, 0, sizeof(struct ceph_osd_reqid)); | |
2106 | p += sizeof(struct ceph_osd_reqid); | |
2107 | ||
2108 | /* trace */ | |
2109 | memset(p, 0, sizeof(struct ceph_blkin_trace_info)); | |
2110 | p += sizeof(struct ceph_blkin_trace_info); | |
2111 | ||
2112 | ceph_encode_32(&p, 0); /* client_inc, always 0 */ | |
fac02ddf | 2113 | ceph_encode_timespec64(p, &req->r_mtime); |
bb873b53 | 2114 | p += sizeof(struct ceph_timespec); |
aa26d662 | 2115 | |
2e59ffd1 | 2116 | encode_oloc(&p, end, &req->r_t.target_oloc); |
2e59ffd1 ID |
2117 | ceph_encode_string(&p, end, req->r_t.target_oid.name, |
2118 | req->r_t.target_oid.name_len); | |
f24e9980 | 2119 | |
bb873b53 ID |
2120 | /* ops, can imply data */ |
2121 | ceph_encode_16(&p, req->r_num_ops); | |
2122 | for (i = 0; i < req->r_num_ops; i++) { | |
2123 | data_len += osd_req_encode_op(p, &req->r_ops[i]); | |
2124 | p += sizeof(struct ceph_osd_op); | |
2125 | } | |
26be8808 | 2126 | |
bb873b53 ID |
2127 | ceph_encode_64(&p, req->r_snapid); /* snapid */ |
2128 | if (req->r_snapc) { | |
2129 | ceph_encode_64(&p, req->r_snapc->seq); | |
2130 | ceph_encode_32(&p, req->r_snapc->num_snaps); | |
2131 | for (i = 0; i < req->r_snapc->num_snaps; i++) | |
2132 | ceph_encode_64(&p, req->r_snapc->snaps[i]); | |
2133 | } else { | |
2134 | ceph_encode_64(&p, 0); /* snap_seq */ | |
2135 | ceph_encode_32(&p, 0); /* snaps len */ | |
2136 | } | |
2137 | ||
2138 | ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ | |
986e8989 | 2139 | BUG_ON(p > end - 8); /* space for features */ |
bb873b53 | 2140 | |
8cb441c0 ID |
2141 | msg->hdr.version = cpu_to_le16(8); /* MOSDOp v8 */ |
2142 | /* front_len is finalized in encode_request_finish() */ | |
986e8989 ID |
2143 | msg->front.iov_len = p - msg->front.iov_base; |
2144 | msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); | |
bb873b53 ID |
2145 | msg->hdr.data_len = cpu_to_le32(data_len); |
2146 | /* | |
2147 | * The header "data_off" is a hint to the receiver allowing it | |
2148 | * to align received data into its buffers such that there's no | |
2149 | * need to re-copy it before writing it to disk (direct I/O). | |
2150 | */ | |
2151 | msg->hdr.data_off = cpu_to_le16(req->r_data_offset); | |
26be8808 | 2152 | |
8cb441c0 ID |
2153 | dout("%s req %p msg %p oid %s oid_len %d\n", __func__, req, msg, |
2154 | req->r_t.target_oid.name, req->r_t.target_oid.name_len); | |
2155 | } | |
2156 | ||
2157 | static void encode_request_finish(struct ceph_msg *msg) | |
2158 | { | |
2159 | void *p = msg->front.iov_base; | |
986e8989 | 2160 | void *const partial_end = p + msg->front.iov_len; |
8cb441c0 ID |
2161 | void *const end = p + msg->front_alloc_len; |
2162 | ||
2163 | if (CEPH_HAVE_FEATURE(msg->con->peer_features, RESEND_ON_SPLIT)) { | |
2164 | /* luminous OSD -- encode features and be done */ | |
986e8989 | 2165 | p = partial_end; |
8cb441c0 ID |
2166 | ceph_encode_64(&p, msg->con->peer_features); |
2167 | } else { | |
2168 | struct { | |
2169 | char spgid[CEPH_ENCODING_START_BLK_LEN + | |
2170 | CEPH_PGID_ENCODING_LEN + 1]; | |
2171 | __le32 hash; | |
2172 | __le32 epoch; | |
2173 | __le32 flags; | |
2174 | char reqid[CEPH_ENCODING_START_BLK_LEN + | |
2175 | sizeof(struct ceph_osd_reqid)]; | |
2176 | char trace[sizeof(struct ceph_blkin_trace_info)]; | |
2177 | __le32 client_inc; | |
2178 | struct ceph_timespec mtime; | |
2179 | } __packed head; | |
2180 | struct ceph_pg pgid; | |
2181 | void *oloc, *oid, *tail; | |
2182 | int oloc_len, oid_len, tail_len; | |
2183 | int len; | |
2184 | ||
2185 | /* | |
2186 | * Pre-luminous OSD -- reencode v8 into v4 using @head | |
2187 | * as a temporary buffer. Encode the raw PG; the rest | |
2188 | * is just a matter of moving oloc, oid and tail blobs | |
2189 | * around. | |
2190 | */ | |
2191 | memcpy(&head, p, sizeof(head)); | |
2192 | p += sizeof(head); | |
2193 | ||
2194 | oloc = p; | |
2195 | p += CEPH_ENCODING_START_BLK_LEN; | |
2196 | pgid.pool = ceph_decode_64(&p); | |
2197 | p += 4 + 4; /* preferred, key len */ | |
2198 | len = ceph_decode_32(&p); | |
2199 | p += len; /* nspace */ | |
2200 | oloc_len = p - oloc; | |
2201 | ||
2202 | oid = p; | |
2203 | len = ceph_decode_32(&p); | |
2204 | p += len; | |
2205 | oid_len = p - oid; | |
2206 | ||
2207 | tail = p; | |
986e8989 | 2208 | tail_len = partial_end - p; |
8cb441c0 ID |
2209 | |
2210 | p = msg->front.iov_base; | |
2211 | ceph_encode_copy(&p, &head.client_inc, sizeof(head.client_inc)); | |
2212 | ceph_encode_copy(&p, &head.epoch, sizeof(head.epoch)); | |
2213 | ceph_encode_copy(&p, &head.flags, sizeof(head.flags)); | |
2214 | ceph_encode_copy(&p, &head.mtime, sizeof(head.mtime)); | |
2215 | ||
2216 | /* reassert_version */ | |
2217 | memset(p, 0, sizeof(struct ceph_eversion)); | |
2218 | p += sizeof(struct ceph_eversion); | |
2219 | ||
2220 | BUG_ON(p >= oloc); | |
2221 | memmove(p, oloc, oloc_len); | |
2222 | p += oloc_len; | |
2223 | ||
2224 | pgid.seed = le32_to_cpu(head.hash); | |
2225 | encode_pgid(&p, &pgid); /* raw pg */ | |
2226 | ||
2227 | BUG_ON(p >= oid); | |
2228 | memmove(p, oid, oid_len); | |
2229 | p += oid_len; | |
2230 | ||
2231 | /* tail -- ops, snapid, snapc, retry_attempt */ | |
2232 | BUG_ON(p >= tail); | |
2233 | memmove(p, tail, tail_len); | |
2234 | p += tail_len; | |
2235 | ||
2236 | msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ | |
2237 | } | |
2238 | ||
2239 | BUG_ON(p > end); | |
2240 | msg->front.iov_len = p - msg->front.iov_base; | |
2241 | msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); | |
2242 | ||
2243 | dout("%s msg %p tid %llu %u+%u+%u v%d\n", __func__, msg, | |
2244 | le64_to_cpu(msg->hdr.tid), le32_to_cpu(msg->hdr.front_len), | |
2245 | le32_to_cpu(msg->hdr.middle_len), le32_to_cpu(msg->hdr.data_len), | |
2246 | le16_to_cpu(msg->hdr.version)); | |
bb873b53 ID |
2247 | } |
2248 | ||
2249 | /* | |
2250 | * @req has to be assigned a tid and registered. | |
2251 | */ | |
2252 | static void send_request(struct ceph_osd_request *req) | |
2253 | { | |
2254 | struct ceph_osd *osd = req->r_osd; | |
2255 | ||
5aea3dcd | 2256 | verify_osd_locked(osd); |
bb873b53 ID |
2257 | WARN_ON(osd->o_osd != req->r_t.osd); |
2258 | ||
a02a946d ID |
2259 | /* backoff? */ |
2260 | if (should_plug_request(req)) | |
2261 | return; | |
2262 | ||
5aea3dcd ID |
2263 | /* |
2264 | * We may have a previously queued request message hanging | |
2265 | * around. Cancel it to avoid corrupting the msgr. | |
2266 | */ | |
2267 | if (req->r_sent) | |
2268 | ceph_msg_revoke(req->r_request); | |
2269 | ||
bb873b53 ID |
2270 | req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; |
2271 | if (req->r_attempts) | |
2272 | req->r_flags |= CEPH_OSD_FLAG_RETRY; | |
2273 | else | |
2274 | WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); | |
2275 | ||
8cb441c0 | 2276 | encode_request_partial(req, req->r_request); |
bb873b53 | 2277 | |
04c7d789 | 2278 | dout("%s req %p tid %llu to pgid %llu.%x spgid %llu.%xs%d osd%d e%u flags 0x%x attempt %d\n", |
bb873b53 | 2279 | __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, |
dc98ff72 | 2280 | req->r_t.spgid.pgid.pool, req->r_t.spgid.pgid.seed, |
04c7d789 ID |
2281 | req->r_t.spgid.shard, osd->o_osd, req->r_t.epoch, req->r_flags, |
2282 | req->r_attempts); | |
bb873b53 ID |
2283 | |
2284 | req->r_t.paused = false; | |
2285 | req->r_stamp = jiffies; | |
2286 | req->r_attempts++; | |
2287 | ||
2288 | req->r_sent = osd->o_incarnation; | |
2289 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); | |
2290 | ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); | |
f24e9980 SW |
2291 | } |
2292 | ||
42c1b124 ID |
2293 | static void maybe_request_map(struct ceph_osd_client *osdc) |
2294 | { | |
2295 | bool continuous = false; | |
2296 | ||
5aea3dcd | 2297 | verify_osdc_locked(osdc); |
42c1b124 ID |
2298 | WARN_ON(!osdc->osdmap->epoch); |
2299 | ||
b7ec35b3 ID |
2300 | if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || |
2301 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || | |
2302 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { | |
42c1b124 ID |
2303 | dout("%s osdc %p continuous\n", __func__, osdc); |
2304 | continuous = true; | |
2305 | } else { | |
2306 | dout("%s osdc %p onetime\n", __func__, osdc); | |
2307 | } | |
2308 | ||
2309 | if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, | |
2310 | osdc->osdmap->epoch + 1, continuous)) | |
2311 | ceph_monc_renew_subs(&osdc->client->monc); | |
2312 | } | |
2313 | ||
a1f4020a | 2314 | static void complete_request(struct ceph_osd_request *req, int err); |
4609245e ID |
2315 | static void send_map_check(struct ceph_osd_request *req); |
2316 | ||
5aea3dcd | 2317 | static void __submit_request(struct ceph_osd_request *req, bool wrlocked) |
0bbfdfe8 | 2318 | { |
5aea3dcd ID |
2319 | struct ceph_osd_client *osdc = req->r_osdc; |
2320 | struct ceph_osd *osd; | |
4609245e | 2321 | enum calc_target_result ct_res; |
66850df5 | 2322 | int err = 0; |
5aea3dcd ID |
2323 | bool need_send = false; |
2324 | bool promoted = false; | |
0bbfdfe8 | 2325 | |
b18b9550 | 2326 | WARN_ON(req->r_tid); |
5aea3dcd ID |
2327 | dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); |
2328 | ||
2329 | again: | |
8edf84ba | 2330 | ct_res = calc_target(osdc, &req->r_t, false); |
4609245e ID |
2331 | if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) |
2332 | goto promote; | |
2333 | ||
5aea3dcd ID |
2334 | osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); |
2335 | if (IS_ERR(osd)) { | |
2336 | WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); | |
2337 | goto promote; | |
0bbfdfe8 ID |
2338 | } |
2339 | ||
66850df5 ID |
2340 | if (osdc->abort_err) { |
2341 | dout("req %p abort_err %d\n", req, osdc->abort_err); | |
2342 | err = osdc->abort_err; | |
2343 | } else if (osdc->osdmap->epoch < osdc->epoch_barrier) { | |
58eb7932 JL |
2344 | dout("req %p epoch %u barrier %u\n", req, osdc->osdmap->epoch, |
2345 | osdc->epoch_barrier); | |
2346 | req->r_t.paused = true; | |
2347 | maybe_request_map(osdc); | |
2348 | } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && | |
2349 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { | |
5aea3dcd ID |
2350 | dout("req %p pausewr\n", req); |
2351 | req->r_t.paused = true; | |
2352 | maybe_request_map(osdc); | |
2353 | } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && | |
b7ec35b3 | 2354 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { |
5aea3dcd ID |
2355 | dout("req %p pauserd\n", req); |
2356 | req->r_t.paused = true; | |
2357 | maybe_request_map(osdc); | |
2358 | } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && | |
2359 | !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | | |
2360 | CEPH_OSD_FLAG_FULL_FORCE)) && | |
b7ec35b3 | 2361 | (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || |
5aea3dcd ID |
2362 | pool_full(osdc, req->r_t.base_oloc.pool))) { |
2363 | dout("req %p full/pool_full\n", req); | |
02b2f549 | 2364 | if (ceph_test_opt(osdc->client, ABORT_ON_FULL)) { |
66850df5 | 2365 | err = -ENOSPC; |
29e87820 | 2366 | } else { |
dc9b0dc4 ID |
2367 | if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL)) |
2368 | pr_warn_ratelimited("cluster is full (osdmap FULL)\n"); | |
2369 | else | |
2370 | pr_warn_ratelimited("pool %lld is full or reached quota\n", | |
2371 | req->r_t.base_oloc.pool); | |
29e87820 ID |
2372 | req->r_t.paused = true; |
2373 | maybe_request_map(osdc); | |
2374 | } | |
5aea3dcd ID |
2375 | } else if (!osd_homeless(osd)) { |
2376 | need_send = true; | |
0bbfdfe8 | 2377 | } else { |
5aea3dcd | 2378 | maybe_request_map(osdc); |
0bbfdfe8 ID |
2379 | } |
2380 | ||
5aea3dcd ID |
2381 | mutex_lock(&osd->lock); |
2382 | /* | |
2383 | * Assign the tid atomically with send_request() to protect | |
2384 | * multiple writes to the same object from racing with each | |
2385 | * other, resulting in out of order ops on the OSDs. | |
2386 | */ | |
2387 | req->r_tid = atomic64_inc_return(&osdc->last_tid); | |
2388 | link_request(osd, req); | |
2389 | if (need_send) | |
2390 | send_request(req); | |
66850df5 ID |
2391 | else if (err) |
2392 | complete_request(req, err); | |
5aea3dcd ID |
2393 | mutex_unlock(&osd->lock); |
2394 | ||
6001567c | 2395 | if (!err && ct_res == CALC_TARGET_POOL_DNE) |
4609245e ID |
2396 | send_map_check(req); |
2397 | ||
5aea3dcd ID |
2398 | if (promoted) |
2399 | downgrade_write(&osdc->lock); | |
2400 | return; | |
2401 | ||
2402 | promote: | |
2403 | up_read(&osdc->lock); | |
2404 | down_write(&osdc->lock); | |
2405 | wrlocked = true; | |
2406 | promoted = true; | |
2407 | goto again; | |
2408 | } | |
2409 | ||
2410 | static void account_request(struct ceph_osd_request *req) | |
2411 | { | |
54ea0046 | 2412 | WARN_ON(req->r_flags & (CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK)); |
b18b9550 | 2413 | WARN_ON(!(req->r_flags & (CEPH_OSD_FLAG_READ | CEPH_OSD_FLAG_WRITE))); |
5aea3dcd | 2414 | |
b18b9550 | 2415 | req->r_flags |= CEPH_OSD_FLAG_ONDISK; |
22d2cfdf | 2416 | atomic_inc(&req->r_osdc->num_requests); |
7cc5e38f ID |
2417 | |
2418 | req->r_start_stamp = jiffies; | |
97e27aaa | 2419 | req->r_start_latency = ktime_get(); |
5aea3dcd ID |
2420 | } |
2421 | ||
2422 | static void submit_request(struct ceph_osd_request *req, bool wrlocked) | |
2423 | { | |
2424 | ceph_osdc_get_request(req); | |
2425 | account_request(req); | |
2426 | __submit_request(req, wrlocked); | |
2427 | } | |
2428 | ||
45ee2c1d | 2429 | static void finish_request(struct ceph_osd_request *req) |
5aea3dcd ID |
2430 | { |
2431 | struct ceph_osd_client *osdc = req->r_osdc; | |
5aea3dcd | 2432 | |
04c7d789 | 2433 | WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); |
5aea3dcd ID |
2434 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); |
2435 | ||
97e27aaa XL |
2436 | req->r_end_latency = ktime_get(); |
2437 | ||
04c7d789 ID |
2438 | if (req->r_osd) |
2439 | unlink_request(req->r_osd, req); | |
5aea3dcd ID |
2440 | atomic_dec(&osdc->num_requests); |
2441 | ||
2442 | /* | |
2443 | * If an OSD has failed or returned and a request has been sent | |
2444 | * twice, it's possible to get a reply and end up here while the | |
2445 | * request message is queued for delivery. We will ignore the | |
2446 | * reply, so not a big deal, but better to try and catch it. | |
2447 | */ | |
2448 | ceph_msg_revoke(req->r_request); | |
2449 | ceph_msg_revoke_incoming(req->r_reply); | |
2450 | } | |
2451 | ||
fe5da05e ID |
2452 | static void __complete_request(struct ceph_osd_request *req) |
2453 | { | |
d75f773c | 2454 | dout("%s req %p tid %llu cb %ps result %d\n", __func__, req, |
26df726b ID |
2455 | req->r_tid, req->r_callback, req->r_result); |
2456 | ||
2457 | if (req->r_callback) | |
fe5da05e | 2458 | req->r_callback(req); |
26df726b ID |
2459 | complete_all(&req->r_completion); |
2460 | ceph_osdc_put_request(req); | |
fe5da05e ID |
2461 | } |
2462 | ||
88bc1922 ID |
2463 | static void complete_request_workfn(struct work_struct *work) |
2464 | { | |
2465 | struct ceph_osd_request *req = | |
2466 | container_of(work, struct ceph_osd_request, r_complete_work); | |
2467 | ||
2468 | __complete_request(req); | |
fe5da05e ID |
2469 | } |
2470 | ||
4609245e | 2471 | /* |
b18b9550 | 2472 | * This is open-coded in handle_reply(). |
4609245e ID |
2473 | */ |
2474 | static void complete_request(struct ceph_osd_request *req, int err) | |
2475 | { | |
2476 | dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); | |
2477 | ||
2478 | req->r_result = err; | |
45ee2c1d | 2479 | finish_request(req); |
88bc1922 ID |
2480 | |
2481 | INIT_WORK(&req->r_complete_work, complete_request_workfn); | |
2482 | queue_work(req->r_osdc->completion_wq, &req->r_complete_work); | |
4609245e ID |
2483 | } |
2484 | ||
2485 | static void cancel_map_check(struct ceph_osd_request *req) | |
2486 | { | |
2487 | struct ceph_osd_client *osdc = req->r_osdc; | |
2488 | struct ceph_osd_request *lookup_req; | |
2489 | ||
2490 | verify_osdc_wrlocked(osdc); | |
2491 | ||
2492 | lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); | |
2493 | if (!lookup_req) | |
2494 | return; | |
2495 | ||
2496 | WARN_ON(lookup_req != req); | |
2497 | erase_request_mc(&osdc->map_checks, req); | |
2498 | ceph_osdc_put_request(req); | |
2499 | } | |
2500 | ||
5aea3dcd ID |
2501 | static void cancel_request(struct ceph_osd_request *req) |
2502 | { | |
2503 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); | |
2504 | ||
4609245e | 2505 | cancel_map_check(req); |
45ee2c1d | 2506 | finish_request(req); |
b18b9550 | 2507 | complete_all(&req->r_completion); |
c297eb42 | 2508 | ceph_osdc_put_request(req); |
5aea3dcd ID |
2509 | } |
2510 | ||
7cc5e38f ID |
2511 | static void abort_request(struct ceph_osd_request *req, int err) |
2512 | { | |
2513 | dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); | |
2514 | ||
2515 | cancel_map_check(req); | |
2516 | complete_request(req, err); | |
2517 | } | |
2518 | ||
66850df5 ID |
2519 | static int abort_fn(struct ceph_osd_request *req, void *arg) |
2520 | { | |
2521 | int err = *(int *)arg; | |
2522 | ||
2523 | abort_request(req, err); | |
2524 | return 0; /* continue iteration */ | |
2525 | } | |
2526 | ||
2527 | /* | |
2528 | * Abort all in-flight requests with @err and arrange for all future | |
2529 | * requests to be failed immediately. | |
2530 | */ | |
2531 | void ceph_osdc_abort_requests(struct ceph_osd_client *osdc, int err) | |
2532 | { | |
2533 | dout("%s osdc %p err %d\n", __func__, osdc, err); | |
2534 | down_write(&osdc->lock); | |
2535 | for_each_request(osdc, abort_fn, &err); | |
2536 | osdc->abort_err = err; | |
2537 | up_write(&osdc->lock); | |
2538 | } | |
2539 | EXPORT_SYMBOL(ceph_osdc_abort_requests); | |
2540 | ||
2cef0ba8 YZ |
2541 | void ceph_osdc_clear_abort_err(struct ceph_osd_client *osdc) |
2542 | { | |
2543 | down_write(&osdc->lock); | |
2544 | osdc->abort_err = 0; | |
2545 | up_write(&osdc->lock); | |
2546 | } | |
2547 | EXPORT_SYMBOL(ceph_osdc_clear_abort_err); | |
2548 | ||
58eb7932 JL |
2549 | static void update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) |
2550 | { | |
2551 | if (likely(eb > osdc->epoch_barrier)) { | |
2552 | dout("updating epoch_barrier from %u to %u\n", | |
2553 | osdc->epoch_barrier, eb); | |
2554 | osdc->epoch_barrier = eb; | |
2555 | /* Request map if we're not to the barrier yet */ | |
2556 | if (eb > osdc->osdmap->epoch) | |
2557 | maybe_request_map(osdc); | |
2558 | } | |
2559 | } | |
2560 | ||
2561 | void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) | |
2562 | { | |
2563 | down_read(&osdc->lock); | |
2564 | if (unlikely(eb > osdc->epoch_barrier)) { | |
2565 | up_read(&osdc->lock); | |
2566 | down_write(&osdc->lock); | |
2567 | update_epoch_barrier(osdc, eb); | |
2568 | up_write(&osdc->lock); | |
2569 | } else { | |
2570 | up_read(&osdc->lock); | |
2571 | } | |
2572 | } | |
2573 | EXPORT_SYMBOL(ceph_osdc_update_epoch_barrier); | |
2574 | ||
4eea0fef ID |
2575 | /* |
2576 | * We can end up releasing caps as a result of abort_request(). | |
2577 | * In that case, we probably want to ensure that the cap release message | |
2578 | * has an updated epoch barrier in it, so set the epoch barrier prior to | |
2579 | * aborting the first request. | |
2580 | */ | |
2581 | static int abort_on_full_fn(struct ceph_osd_request *req, void *arg) | |
2582 | { | |
2583 | struct ceph_osd_client *osdc = req->r_osdc; | |
2584 | bool *victims = arg; | |
2585 | ||
c843d13c | 2586 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && |
4eea0fef | 2587 | (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || |
690f951d | 2588 | pool_full(osdc, req->r_t.base_oloc.pool))) { |
4eea0fef ID |
2589 | if (!*victims) { |
2590 | update_epoch_barrier(osdc, osdc->osdmap->epoch); | |
2591 | *victims = true; | |
2592 | } | |
2593 | abort_request(req, -ENOSPC); | |
2594 | } | |
2595 | ||
2596 | return 0; /* continue iteration */ | |
2597 | } | |
2598 | ||
fc36d0a4 JL |
2599 | /* |
2600 | * Drop all pending requests that are stalled waiting on a full condition to | |
58eb7932 JL |
2601 | * clear, and complete them with ENOSPC as the return code. Set the |
2602 | * osdc->epoch_barrier to the latest map epoch that we've seen if any were | |
2603 | * cancelled. | |
fc36d0a4 JL |
2604 | */ |
2605 | static void ceph_osdc_abort_on_full(struct ceph_osd_client *osdc) | |
2606 | { | |
58eb7932 | 2607 | bool victims = false; |
fc36d0a4 | 2608 | |
02b2f549 | 2609 | if (ceph_test_opt(osdc->client, ABORT_ON_FULL) && |
c843d13c | 2610 | (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || have_pool_full(osdc))) |
4eea0fef | 2611 | for_each_request(osdc, abort_on_full_fn, &victims); |
fc36d0a4 JL |
2612 | } |
2613 | ||
4609245e ID |
2614 | static void check_pool_dne(struct ceph_osd_request *req) |
2615 | { | |
2616 | struct ceph_osd_client *osdc = req->r_osdc; | |
2617 | struct ceph_osdmap *map = osdc->osdmap; | |
2618 | ||
2619 | verify_osdc_wrlocked(osdc); | |
2620 | WARN_ON(!map->epoch); | |
2621 | ||
2622 | if (req->r_attempts) { | |
2623 | /* | |
2624 | * We sent a request earlier, which means that | |
2625 | * previously the pool existed, and now it does not | |
2626 | * (i.e., it was deleted). | |
2627 | */ | |
2628 | req->r_map_dne_bound = map->epoch; | |
2629 | dout("%s req %p tid %llu pool disappeared\n", __func__, req, | |
2630 | req->r_tid); | |
2631 | } else { | |
2632 | dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, | |
2633 | req, req->r_tid, req->r_map_dne_bound, map->epoch); | |
2634 | } | |
2635 | ||
2636 | if (req->r_map_dne_bound) { | |
2637 | if (map->epoch >= req->r_map_dne_bound) { | |
2638 | /* we had a new enough map */ | |
2639 | pr_info_ratelimited("tid %llu pool does not exist\n", | |
2640 | req->r_tid); | |
2641 | complete_request(req, -ENOENT); | |
2642 | } | |
2643 | } else { | |
2644 | send_map_check(req); | |
2645 | } | |
2646 | } | |
2647 | ||
2648 | static void map_check_cb(struct ceph_mon_generic_request *greq) | |
2649 | { | |
2650 | struct ceph_osd_client *osdc = &greq->monc->client->osdc; | |
2651 | struct ceph_osd_request *req; | |
2652 | u64 tid = greq->private_data; | |
2653 | ||
2654 | WARN_ON(greq->result || !greq->u.newest); | |
2655 | ||
2656 | down_write(&osdc->lock); | |
2657 | req = lookup_request_mc(&osdc->map_checks, tid); | |
2658 | if (!req) { | |
2659 | dout("%s tid %llu dne\n", __func__, tid); | |
2660 | goto out_unlock; | |
2661 | } | |
2662 | ||
2663 | dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, | |
2664 | req, req->r_tid, req->r_map_dne_bound, greq->u.newest); | |
2665 | if (!req->r_map_dne_bound) | |
2666 | req->r_map_dne_bound = greq->u.newest; | |
2667 | erase_request_mc(&osdc->map_checks, req); | |
2668 | check_pool_dne(req); | |
2669 | ||
2670 | ceph_osdc_put_request(req); | |
2671 | out_unlock: | |
2672 | up_write(&osdc->lock); | |
2673 | } | |
2674 | ||
2675 | static void send_map_check(struct ceph_osd_request *req) | |
2676 | { | |
2677 | struct ceph_osd_client *osdc = req->r_osdc; | |
2678 | struct ceph_osd_request *lookup_req; | |
2679 | int ret; | |
2680 | ||
2681 | verify_osdc_wrlocked(osdc); | |
2682 | ||
2683 | lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); | |
2684 | if (lookup_req) { | |
2685 | WARN_ON(lookup_req != req); | |
2686 | return; | |
2687 | } | |
2688 | ||
2689 | ceph_osdc_get_request(req); | |
2690 | insert_request_mc(&osdc->map_checks, req); | |
2691 | ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", | |
2692 | map_check_cb, req->r_tid); | |
2693 | WARN_ON(ret); | |
2694 | } | |
2695 | ||
922dab61 ID |
2696 | /* |
2697 | * lingering requests, watch/notify v2 infrastructure | |
2698 | */ | |
2699 | static void linger_release(struct kref *kref) | |
2700 | { | |
2701 | struct ceph_osd_linger_request *lreq = | |
2702 | container_of(kref, struct ceph_osd_linger_request, kref); | |
2703 | ||
2704 | dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, | |
2705 | lreq->reg_req, lreq->ping_req); | |
2706 | WARN_ON(!RB_EMPTY_NODE(&lreq->node)); | |
2707 | WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); | |
4609245e | 2708 | WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); |
922dab61 | 2709 | WARN_ON(!list_empty(&lreq->scan_item)); |
b07d3c4b | 2710 | WARN_ON(!list_empty(&lreq->pending_lworks)); |
922dab61 ID |
2711 | WARN_ON(lreq->osd); |
2712 | ||
75dbb685 ID |
2713 | if (lreq->request_pl) |
2714 | ceph_pagelist_release(lreq->request_pl); | |
2715 | if (lreq->notify_id_pages) | |
2716 | ceph_release_page_vector(lreq->notify_id_pages, 1); | |
2717 | ||
2718 | ceph_osdc_put_request(lreq->reg_req); | |
2719 | ceph_osdc_put_request(lreq->ping_req); | |
922dab61 ID |
2720 | target_destroy(&lreq->t); |
2721 | kfree(lreq); | |
2722 | } | |
2723 | ||
2724 | static void linger_put(struct ceph_osd_linger_request *lreq) | |
2725 | { | |
2726 | if (lreq) | |
2727 | kref_put(&lreq->kref, linger_release); | |
2728 | } | |
2729 | ||
2730 | static struct ceph_osd_linger_request * | |
2731 | linger_get(struct ceph_osd_linger_request *lreq) | |
2732 | { | |
2733 | kref_get(&lreq->kref); | |
2734 | return lreq; | |
2735 | } | |
2736 | ||
2737 | static struct ceph_osd_linger_request * | |
2738 | linger_alloc(struct ceph_osd_client *osdc) | |
2739 | { | |
2740 | struct ceph_osd_linger_request *lreq; | |
2741 | ||
2742 | lreq = kzalloc(sizeof(*lreq), GFP_NOIO); | |
2743 | if (!lreq) | |
2744 | return NULL; | |
2745 | ||
2746 | kref_init(&lreq->kref); | |
2747 | mutex_init(&lreq->lock); | |
2748 | RB_CLEAR_NODE(&lreq->node); | |
2749 | RB_CLEAR_NODE(&lreq->osdc_node); | |
4609245e | 2750 | RB_CLEAR_NODE(&lreq->mc_node); |
922dab61 | 2751 | INIT_LIST_HEAD(&lreq->scan_item); |
b07d3c4b | 2752 | INIT_LIST_HEAD(&lreq->pending_lworks); |
922dab61 | 2753 | init_completion(&lreq->reg_commit_wait); |
19079203 | 2754 | init_completion(&lreq->notify_finish_wait); |
922dab61 ID |
2755 | |
2756 | lreq->osdc = osdc; | |
2757 | target_init(&lreq->t); | |
2758 | ||
2759 | dout("%s lreq %p\n", __func__, lreq); | |
2760 | return lreq; | |
2761 | } | |
2762 | ||
2763 | DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) | |
2764 | DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) | |
4609245e | 2765 | DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) |
922dab61 ID |
2766 | |
2767 | /* | |
2768 | * Create linger request <-> OSD session relation. | |
2769 | * | |
2770 | * @lreq has to be registered, @osd may be homeless. | |
2771 | */ | |
2772 | static void link_linger(struct ceph_osd *osd, | |
2773 | struct ceph_osd_linger_request *lreq) | |
2774 | { | |
2775 | verify_osd_locked(osd); | |
2776 | WARN_ON(!lreq->linger_id || lreq->osd); | |
2777 | dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, | |
2778 | osd->o_osd, lreq, lreq->linger_id); | |
2779 | ||
2780 | if (!osd_homeless(osd)) | |
2781 | __remove_osd_from_lru(osd); | |
2782 | else | |
2783 | atomic_inc(&osd->o_osdc->num_homeless); | |
2784 | ||
2785 | get_osd(osd); | |
2786 | insert_linger(&osd->o_linger_requests, lreq); | |
2787 | lreq->osd = osd; | |
2788 | } | |
2789 | ||
2790 | static void unlink_linger(struct ceph_osd *osd, | |
2791 | struct ceph_osd_linger_request *lreq) | |
2792 | { | |
2793 | verify_osd_locked(osd); | |
2794 | WARN_ON(lreq->osd != osd); | |
2795 | dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, | |
2796 | osd->o_osd, lreq, lreq->linger_id); | |
2797 | ||
2798 | lreq->osd = NULL; | |
2799 | erase_linger(&osd->o_linger_requests, lreq); | |
2800 | put_osd(osd); | |
2801 | ||
2802 | if (!osd_homeless(osd)) | |
2803 | maybe_move_osd_to_lru(osd); | |
2804 | else | |
2805 | atomic_dec(&osd->o_osdc->num_homeless); | |
2806 | } | |
2807 | ||
2808 | static bool __linger_registered(struct ceph_osd_linger_request *lreq) | |
2809 | { | |
2810 | verify_osdc_locked(lreq->osdc); | |
2811 | ||
2812 | return !RB_EMPTY_NODE(&lreq->osdc_node); | |
2813 | } | |
2814 | ||
2815 | static bool linger_registered(struct ceph_osd_linger_request *lreq) | |
2816 | { | |
2817 | struct ceph_osd_client *osdc = lreq->osdc; | |
2818 | bool registered; | |
2819 | ||
2820 | down_read(&osdc->lock); | |
2821 | registered = __linger_registered(lreq); | |
2822 | up_read(&osdc->lock); | |
2823 | ||
2824 | return registered; | |
2825 | } | |
2826 | ||
2827 | static void linger_register(struct ceph_osd_linger_request *lreq) | |
2828 | { | |
2829 | struct ceph_osd_client *osdc = lreq->osdc; | |
2830 | ||
2831 | verify_osdc_wrlocked(osdc); | |
2832 | WARN_ON(lreq->linger_id); | |
2833 | ||
2834 | linger_get(lreq); | |
2835 | lreq->linger_id = ++osdc->last_linger_id; | |
2836 | insert_linger_osdc(&osdc->linger_requests, lreq); | |
2837 | } | |
2838 | ||
2839 | static void linger_unregister(struct ceph_osd_linger_request *lreq) | |
2840 | { | |
2841 | struct ceph_osd_client *osdc = lreq->osdc; | |
2842 | ||
2843 | verify_osdc_wrlocked(osdc); | |
2844 | ||
2845 | erase_linger_osdc(&osdc->linger_requests, lreq); | |
2846 | linger_put(lreq); | |
2847 | } | |
2848 | ||
2849 | static void cancel_linger_request(struct ceph_osd_request *req) | |
2850 | { | |
2851 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
2852 | ||
2853 | WARN_ON(!req->r_linger); | |
2854 | cancel_request(req); | |
2855 | linger_put(lreq); | |
2856 | } | |
2857 | ||
2858 | struct linger_work { | |
2859 | struct work_struct work; | |
2860 | struct ceph_osd_linger_request *lreq; | |
b07d3c4b ID |
2861 | struct list_head pending_item; |
2862 | unsigned long queued_stamp; | |
922dab61 ID |
2863 | |
2864 | union { | |
2865 | struct { | |
2866 | u64 notify_id; | |
2867 | u64 notifier_id; | |
2868 | void *payload; /* points into @msg front */ | |
2869 | size_t payload_len; | |
2870 | ||
2871 | struct ceph_msg *msg; /* for ceph_msg_put() */ | |
2872 | } notify; | |
2873 | struct { | |
2874 | int err; | |
2875 | } error; | |
2876 | }; | |
2877 | }; | |
2878 | ||
2879 | static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, | |
2880 | work_func_t workfn) | |
2881 | { | |
2882 | struct linger_work *lwork; | |
2883 | ||
2884 | lwork = kzalloc(sizeof(*lwork), GFP_NOIO); | |
2885 | if (!lwork) | |
2886 | return NULL; | |
2887 | ||
2888 | INIT_WORK(&lwork->work, workfn); | |
b07d3c4b | 2889 | INIT_LIST_HEAD(&lwork->pending_item); |
922dab61 ID |
2890 | lwork->lreq = linger_get(lreq); |
2891 | ||
2892 | return lwork; | |
2893 | } | |
2894 | ||
2895 | static void lwork_free(struct linger_work *lwork) | |
2896 | { | |
2897 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
2898 | ||
b07d3c4b ID |
2899 | mutex_lock(&lreq->lock); |
2900 | list_del(&lwork->pending_item); | |
2901 | mutex_unlock(&lreq->lock); | |
2902 | ||
922dab61 ID |
2903 | linger_put(lreq); |
2904 | kfree(lwork); | |
2905 | } | |
2906 | ||
2907 | static void lwork_queue(struct linger_work *lwork) | |
2908 | { | |
2909 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
2910 | struct ceph_osd_client *osdc = lreq->osdc; | |
2911 | ||
2912 | verify_lreq_locked(lreq); | |
b07d3c4b ID |
2913 | WARN_ON(!list_empty(&lwork->pending_item)); |
2914 | ||
2915 | lwork->queued_stamp = jiffies; | |
2916 | list_add_tail(&lwork->pending_item, &lreq->pending_lworks); | |
922dab61 ID |
2917 | queue_work(osdc->notify_wq, &lwork->work); |
2918 | } | |
2919 | ||
2920 | static void do_watch_notify(struct work_struct *w) | |
2921 | { | |
2922 | struct linger_work *lwork = container_of(w, struct linger_work, work); | |
2923 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
2924 | ||
2925 | if (!linger_registered(lreq)) { | |
2926 | dout("%s lreq %p not registered\n", __func__, lreq); | |
2927 | goto out; | |
2928 | } | |
2929 | ||
19079203 | 2930 | WARN_ON(!lreq->is_watch); |
922dab61 ID |
2931 | dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", |
2932 | __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, | |
2933 | lwork->notify.payload_len); | |
2934 | lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, | |
2935 | lwork->notify.notifier_id, lwork->notify.payload, | |
2936 | lwork->notify.payload_len); | |
2937 | ||
2938 | out: | |
2939 | ceph_msg_put(lwork->notify.msg); | |
2940 | lwork_free(lwork); | |
2941 | } | |
2942 | ||
2943 | static void do_watch_error(struct work_struct *w) | |
2944 | { | |
2945 | struct linger_work *lwork = container_of(w, struct linger_work, work); | |
2946 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
2947 | ||
2948 | if (!linger_registered(lreq)) { | |
2949 | dout("%s lreq %p not registered\n", __func__, lreq); | |
2950 | goto out; | |
2951 | } | |
2952 | ||
2953 | dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); | |
2954 | lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); | |
2955 | ||
2956 | out: | |
2957 | lwork_free(lwork); | |
2958 | } | |
2959 | ||
2960 | static void queue_watch_error(struct ceph_osd_linger_request *lreq) | |
2961 | { | |
2962 | struct linger_work *lwork; | |
2963 | ||
2964 | lwork = lwork_alloc(lreq, do_watch_error); | |
2965 | if (!lwork) { | |
2966 | pr_err("failed to allocate error-lwork\n"); | |
2967 | return; | |
2968 | } | |
2969 | ||
2970 | lwork->error.err = lreq->last_error; | |
2971 | lwork_queue(lwork); | |
2972 | } | |
2973 | ||
2974 | static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, | |
2975 | int result) | |
2976 | { | |
2977 | if (!completion_done(&lreq->reg_commit_wait)) { | |
2978 | lreq->reg_commit_error = (result <= 0 ? result : 0); | |
2979 | complete_all(&lreq->reg_commit_wait); | |
2980 | } | |
2981 | } | |
2982 | ||
2983 | static void linger_commit_cb(struct ceph_osd_request *req) | |
2984 | { | |
2985 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
2986 | ||
2987 | mutex_lock(&lreq->lock); | |
75dbb685 ID |
2988 | if (req != lreq->reg_req) { |
2989 | dout("%s lreq %p linger_id %llu unknown req (%p != %p)\n", | |
2990 | __func__, lreq, lreq->linger_id, req, lreq->reg_req); | |
2991 | goto out; | |
2992 | } | |
2993 | ||
922dab61 ID |
2994 | dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, |
2995 | lreq->linger_id, req->r_result); | |
922dab61 ID |
2996 | linger_reg_commit_complete(lreq, req->r_result); |
2997 | lreq->committed = true; | |
2998 | ||
19079203 ID |
2999 | if (!lreq->is_watch) { |
3000 | struct ceph_osd_data *osd_data = | |
3001 | osd_req_op_data(req, 0, notify, response_data); | |
3002 | void *p = page_address(osd_data->pages[0]); | |
3003 | ||
3004 | WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || | |
3005 | osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); | |
3006 | ||
3007 | /* make note of the notify_id */ | |
3008 | if (req->r_ops[0].outdata_len >= sizeof(u64)) { | |
3009 | lreq->notify_id = ceph_decode_64(&p); | |
3010 | dout("lreq %p notify_id %llu\n", lreq, | |
3011 | lreq->notify_id); | |
3012 | } else { | |
3013 | dout("lreq %p no notify_id\n", lreq); | |
3014 | } | |
3015 | } | |
3016 | ||
75dbb685 | 3017 | out: |
922dab61 ID |
3018 | mutex_unlock(&lreq->lock); |
3019 | linger_put(lreq); | |
3020 | } | |
3021 | ||
3022 | static int normalize_watch_error(int err) | |
3023 | { | |
3024 | /* | |
3025 | * Translate ENOENT -> ENOTCONN so that a delete->disconnection | |
3026 | * notification and a failure to reconnect because we raced with | |
3027 | * the delete appear the same to the user. | |
3028 | */ | |
3029 | if (err == -ENOENT) | |
3030 | err = -ENOTCONN; | |
3031 | ||
3032 | return err; | |
3033 | } | |
3034 | ||
3035 | static void linger_reconnect_cb(struct ceph_osd_request *req) | |
3036 | { | |
3037 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
3038 | ||
3039 | mutex_lock(&lreq->lock); | |
75dbb685 ID |
3040 | if (req != lreq->reg_req) { |
3041 | dout("%s lreq %p linger_id %llu unknown req (%p != %p)\n", | |
3042 | __func__, lreq, lreq->linger_id, req, lreq->reg_req); | |
3043 | goto out; | |
3044 | } | |
3045 | ||
922dab61 ID |
3046 | dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, |
3047 | lreq, lreq->linger_id, req->r_result, lreq->last_error); | |
3048 | if (req->r_result < 0) { | |
3049 | if (!lreq->last_error) { | |
3050 | lreq->last_error = normalize_watch_error(req->r_result); | |
3051 | queue_watch_error(lreq); | |
3052 | } | |
3053 | } | |
3054 | ||
75dbb685 | 3055 | out: |
922dab61 ID |
3056 | mutex_unlock(&lreq->lock); |
3057 | linger_put(lreq); | |
3058 | } | |
3059 | ||
3060 | static void send_linger(struct ceph_osd_linger_request *lreq) | |
3061 | { | |
75dbb685 ID |
3062 | struct ceph_osd_client *osdc = lreq->osdc; |
3063 | struct ceph_osd_request *req; | |
3064 | int ret; | |
922dab61 | 3065 | |
75dbb685 ID |
3066 | verify_osdc_wrlocked(osdc); |
3067 | mutex_lock(&lreq->lock); | |
922dab61 ID |
3068 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); |
3069 | ||
75dbb685 ID |
3070 | if (lreq->reg_req) { |
3071 | if (lreq->reg_req->r_osd) | |
3072 | cancel_linger_request(lreq->reg_req); | |
3073 | ceph_osdc_put_request(lreq->reg_req); | |
3074 | } | |
3075 | ||
3076 | req = ceph_osdc_alloc_request(osdc, NULL, 1, true, GFP_NOIO); | |
3077 | BUG_ON(!req); | |
922dab61 | 3078 | |
5133ba8f | 3079 | target_copy(&req->r_t, &lreq->t); |
922dab61 ID |
3080 | req->r_mtime = lreq->mtime; |
3081 | ||
19079203 | 3082 | if (lreq->is_watch && lreq->committed) { |
75dbb685 ID |
3083 | osd_req_op_watch_init(req, 0, CEPH_OSD_WATCH_OP_RECONNECT, |
3084 | lreq->linger_id, ++lreq->register_gen); | |
922dab61 | 3085 | dout("lreq %p reconnect register_gen %u\n", lreq, |
75dbb685 | 3086 | req->r_ops[0].watch.gen); |
922dab61 ID |
3087 | req->r_callback = linger_reconnect_cb; |
3088 | } else { | |
75dbb685 ID |
3089 | if (lreq->is_watch) { |
3090 | osd_req_op_watch_init(req, 0, CEPH_OSD_WATCH_OP_WATCH, | |
3091 | lreq->linger_id, 0); | |
3092 | } else { | |
19079203 | 3093 | lreq->notify_id = 0; |
75dbb685 ID |
3094 | |
3095 | refcount_inc(&lreq->request_pl->refcnt); | |
3096 | osd_req_op_notify_init(req, 0, lreq->linger_id, | |
3097 | lreq->request_pl); | |
3098 | ceph_osd_data_pages_init( | |
3099 | osd_req_op_data(req, 0, notify, response_data), | |
3100 | lreq->notify_id_pages, PAGE_SIZE, 0, false, false); | |
3101 | } | |
922dab61 ID |
3102 | dout("lreq %p register\n", lreq); |
3103 | req->r_callback = linger_commit_cb; | |
3104 | } | |
75dbb685 ID |
3105 | |
3106 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); | |
3107 | BUG_ON(ret); | |
922dab61 ID |
3108 | |
3109 | req->r_priv = linger_get(lreq); | |
3110 | req->r_linger = true; | |
75dbb685 ID |
3111 | lreq->reg_req = req; |
3112 | mutex_unlock(&lreq->lock); | |
922dab61 ID |
3113 | |
3114 | submit_request(req, true); | |
3115 | } | |
3116 | ||
3117 | static void linger_ping_cb(struct ceph_osd_request *req) | |
3118 | { | |
3119 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
3120 | ||
3121 | mutex_lock(&lreq->lock); | |
75dbb685 ID |
3122 | if (req != lreq->ping_req) { |
3123 | dout("%s lreq %p linger_id %llu unknown req (%p != %p)\n", | |
3124 | __func__, lreq, lreq->linger_id, req, lreq->ping_req); | |
3125 | goto out; | |
3126 | } | |
3127 | ||
922dab61 ID |
3128 | dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", |
3129 | __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, | |
3130 | lreq->last_error); | |
3131 | if (lreq->register_gen == req->r_ops[0].watch.gen) { | |
b07d3c4b ID |
3132 | if (!req->r_result) { |
3133 | lreq->watch_valid_thru = lreq->ping_sent; | |
3134 | } else if (!lreq->last_error) { | |
922dab61 ID |
3135 | lreq->last_error = normalize_watch_error(req->r_result); |
3136 | queue_watch_error(lreq); | |
3137 | } | |
3138 | } else { | |
3139 | dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, | |
3140 | lreq->register_gen, req->r_ops[0].watch.gen); | |
3141 | } | |
3142 | ||
75dbb685 | 3143 | out: |
922dab61 ID |
3144 | mutex_unlock(&lreq->lock); |
3145 | linger_put(lreq); | |
3146 | } | |
3147 | ||
3148 | static void send_linger_ping(struct ceph_osd_linger_request *lreq) | |
3149 | { | |
3150 | struct ceph_osd_client *osdc = lreq->osdc; | |
75dbb685 ID |
3151 | struct ceph_osd_request *req; |
3152 | int ret; | |
922dab61 | 3153 | |
b7ec35b3 | 3154 | if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { |
922dab61 ID |
3155 | dout("%s PAUSERD\n", __func__); |
3156 | return; | |
3157 | } | |
3158 | ||
3159 | lreq->ping_sent = jiffies; | |
3160 | dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", | |
3161 | __func__, lreq, lreq->linger_id, lreq->ping_sent, | |
3162 | lreq->register_gen); | |
3163 | ||
75dbb685 ID |
3164 | if (lreq->ping_req) { |
3165 | if (lreq->ping_req->r_osd) | |
3166 | cancel_linger_request(lreq->ping_req); | |
3167 | ceph_osdc_put_request(lreq->ping_req); | |
3168 | } | |
922dab61 | 3169 | |
75dbb685 ID |
3170 | req = ceph_osdc_alloc_request(osdc, NULL, 1, true, GFP_NOIO); |
3171 | BUG_ON(!req); | |
922dab61 | 3172 | |
75dbb685 ID |
3173 | target_copy(&req->r_t, &lreq->t); |
3174 | osd_req_op_watch_init(req, 0, CEPH_OSD_WATCH_OP_PING, lreq->linger_id, | |
3175 | lreq->register_gen); | |
922dab61 | 3176 | req->r_callback = linger_ping_cb; |
75dbb685 ID |
3177 | |
3178 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); | |
3179 | BUG_ON(ret); | |
3180 | ||
922dab61 ID |
3181 | req->r_priv = linger_get(lreq); |
3182 | req->r_linger = true; | |
75dbb685 | 3183 | lreq->ping_req = req; |
922dab61 ID |
3184 | |
3185 | ceph_osdc_get_request(req); | |
3186 | account_request(req); | |
3187 | req->r_tid = atomic64_inc_return(&osdc->last_tid); | |
3188 | link_request(lreq->osd, req); | |
3189 | send_request(req); | |
3190 | } | |
3191 | ||
3192 | static void linger_submit(struct ceph_osd_linger_request *lreq) | |
3193 | { | |
3194 | struct ceph_osd_client *osdc = lreq->osdc; | |
3195 | struct ceph_osd *osd; | |
3196 | ||
81c65213 ID |
3197 | down_write(&osdc->lock); |
3198 | linger_register(lreq); | |
81c65213 | 3199 | |
8edf84ba | 3200 | calc_target(osdc, &lreq->t, false); |
922dab61 ID |
3201 | osd = lookup_create_osd(osdc, lreq->t.osd, true); |
3202 | link_linger(osd, lreq); | |
3203 | ||
3204 | send_linger(lreq); | |
81c65213 | 3205 | up_write(&osdc->lock); |
922dab61 ID |
3206 | } |
3207 | ||
4609245e ID |
3208 | static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) |
3209 | { | |
3210 | struct ceph_osd_client *osdc = lreq->osdc; | |
3211 | struct ceph_osd_linger_request *lookup_lreq; | |
3212 | ||
3213 | verify_osdc_wrlocked(osdc); | |
3214 | ||
3215 | lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, | |
3216 | lreq->linger_id); | |
3217 | if (!lookup_lreq) | |
3218 | return; | |
3219 | ||
3220 | WARN_ON(lookup_lreq != lreq); | |
3221 | erase_linger_mc(&osdc->linger_map_checks, lreq); | |
3222 | linger_put(lreq); | |
3223 | } | |
3224 | ||
922dab61 ID |
3225 | /* |
3226 | * @lreq has to be both registered and linked. | |
3227 | */ | |
3228 | static void __linger_cancel(struct ceph_osd_linger_request *lreq) | |
3229 | { | |
75dbb685 | 3230 | if (lreq->ping_req && lreq->ping_req->r_osd) |
922dab61 | 3231 | cancel_linger_request(lreq->ping_req); |
75dbb685 | 3232 | if (lreq->reg_req && lreq->reg_req->r_osd) |
922dab61 | 3233 | cancel_linger_request(lreq->reg_req); |
4609245e | 3234 | cancel_linger_map_check(lreq); |
922dab61 ID |
3235 | unlink_linger(lreq->osd, lreq); |
3236 | linger_unregister(lreq); | |
3237 | } | |
3238 | ||
3239 | static void linger_cancel(struct ceph_osd_linger_request *lreq) | |
3240 | { | |
3241 | struct ceph_osd_client *osdc = lreq->osdc; | |
3242 | ||
3243 | down_write(&osdc->lock); | |
3244 | if (__linger_registered(lreq)) | |
3245 | __linger_cancel(lreq); | |
3246 | up_write(&osdc->lock); | |
3247 | } | |
3248 | ||
4609245e ID |
3249 | static void send_linger_map_check(struct ceph_osd_linger_request *lreq); |
3250 | ||
3251 | static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) | |
3252 | { | |
3253 | struct ceph_osd_client *osdc = lreq->osdc; | |
3254 | struct ceph_osdmap *map = osdc->osdmap; | |
3255 | ||
3256 | verify_osdc_wrlocked(osdc); | |
3257 | WARN_ON(!map->epoch); | |
3258 | ||
3259 | if (lreq->register_gen) { | |
3260 | lreq->map_dne_bound = map->epoch; | |
3261 | dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, | |
3262 | lreq, lreq->linger_id); | |
3263 | } else { | |
3264 | dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", | |
3265 | __func__, lreq, lreq->linger_id, lreq->map_dne_bound, | |
3266 | map->epoch); | |
3267 | } | |
3268 | ||
3269 | if (lreq->map_dne_bound) { | |
3270 | if (map->epoch >= lreq->map_dne_bound) { | |
3271 | /* we had a new enough map */ | |
3272 | pr_info("linger_id %llu pool does not exist\n", | |
3273 | lreq->linger_id); | |
3274 | linger_reg_commit_complete(lreq, -ENOENT); | |
3275 | __linger_cancel(lreq); | |
3276 | } | |
3277 | } else { | |
3278 | send_linger_map_check(lreq); | |
3279 | } | |
3280 | } | |
3281 | ||
3282 | static void linger_map_check_cb(struct ceph_mon_generic_request *greq) | |
3283 | { | |
3284 | struct ceph_osd_client *osdc = &greq->monc->client->osdc; | |
3285 | struct ceph_osd_linger_request *lreq; | |
3286 | u64 linger_id = greq->private_data; | |
3287 | ||
3288 | WARN_ON(greq->result || !greq->u.newest); | |
3289 | ||
3290 | down_write(&osdc->lock); | |
3291 | lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); | |
3292 | if (!lreq) { | |
3293 | dout("%s linger_id %llu dne\n", __func__, linger_id); | |
3294 | goto out_unlock; | |
3295 | } | |
3296 | ||
3297 | dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", | |
3298 | __func__, lreq, lreq->linger_id, lreq->map_dne_bound, | |
3299 | greq->u.newest); | |
3300 | if (!lreq->map_dne_bound) | |
3301 | lreq->map_dne_bound = greq->u.newest; | |
3302 | erase_linger_mc(&osdc->linger_map_checks, lreq); | |
3303 | check_linger_pool_dne(lreq); | |
3304 | ||
3305 | linger_put(lreq); | |
3306 | out_unlock: | |
3307 | up_write(&osdc->lock); | |
3308 | } | |
3309 | ||
3310 | static void send_linger_map_check(struct ceph_osd_linger_request *lreq) | |
3311 | { | |
3312 | struct ceph_osd_client *osdc = lreq->osdc; | |
3313 | struct ceph_osd_linger_request *lookup_lreq; | |
3314 | int ret; | |
3315 | ||
3316 | verify_osdc_wrlocked(osdc); | |
3317 | ||
3318 | lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, | |
3319 | lreq->linger_id); | |
3320 | if (lookup_lreq) { | |
3321 | WARN_ON(lookup_lreq != lreq); | |
3322 | return; | |
3323 | } | |
3324 | ||
3325 | linger_get(lreq); | |
3326 | insert_linger_mc(&osdc->linger_map_checks, lreq); | |
3327 | ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", | |
3328 | linger_map_check_cb, lreq->linger_id); | |
3329 | WARN_ON(ret); | |
3330 | } | |
3331 | ||
922dab61 ID |
3332 | static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) |
3333 | { | |
3334 | int ret; | |
3335 | ||
3336 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); | |
3337 | ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); | |
3338 | return ret ?: lreq->reg_commit_error; | |
3339 | } | |
3340 | ||
19079203 ID |
3341 | static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) |
3342 | { | |
3343 | int ret; | |
3344 | ||
3345 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); | |
3346 | ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); | |
3347 | return ret ?: lreq->notify_finish_error; | |
3348 | } | |
3349 | ||
f24e9980 | 3350 | /* |
fbca9635 ID |
3351 | * Timeout callback, called every N seconds. When 1 or more OSD |
3352 | * requests has been active for more than N seconds, we send a keepalive | |
3353 | * (tag + timestamp) to its OSD to ensure any communications channel | |
3354 | * reset is detected. | |
f24e9980 SW |
3355 | */ |
3356 | static void handle_timeout(struct work_struct *work) | |
3357 | { | |
3358 | struct ceph_osd_client *osdc = | |
3359 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
a319bf56 | 3360 | struct ceph_options *opts = osdc->client->options; |
5aea3dcd | 3361 | unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; |
7cc5e38f | 3362 | unsigned long expiry_cutoff = jiffies - opts->osd_request_timeout; |
5aea3dcd ID |
3363 | LIST_HEAD(slow_osds); |
3364 | struct rb_node *n, *p; | |
f24e9980 | 3365 | |
5aea3dcd ID |
3366 | dout("%s osdc %p\n", __func__, osdc); |
3367 | down_write(&osdc->lock); | |
f24e9980 | 3368 | |
422d2cb8 YS |
3369 | /* |
3370 | * ping osds that are a bit slow. this ensures that if there | |
3371 | * is a break in the TCP connection we will notice, and reopen | |
3372 | * a connection with that osd (from the fault callback). | |
3373 | */ | |
5aea3dcd ID |
3374 | for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { |
3375 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
3376 | bool found = false; | |
3377 | ||
7cc5e38f | 3378 | for (p = rb_first(&osd->o_requests); p; ) { |
5aea3dcd ID |
3379 | struct ceph_osd_request *req = |
3380 | rb_entry(p, struct ceph_osd_request, r_node); | |
3381 | ||
7cc5e38f ID |
3382 | p = rb_next(p); /* abort_request() */ |
3383 | ||
5aea3dcd ID |
3384 | if (time_before(req->r_stamp, cutoff)) { |
3385 | dout(" req %p tid %llu on osd%d is laggy\n", | |
3386 | req, req->r_tid, osd->o_osd); | |
3387 | found = true; | |
3388 | } | |
7cc5e38f ID |
3389 | if (opts->osd_request_timeout && |
3390 | time_before(req->r_start_stamp, expiry_cutoff)) { | |
3391 | pr_err_ratelimited("tid %llu on osd%d timeout\n", | |
3392 | req->r_tid, osd->o_osd); | |
3393 | abort_request(req, -ETIMEDOUT); | |
3394 | } | |
5aea3dcd | 3395 | } |
922dab61 ID |
3396 | for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { |
3397 | struct ceph_osd_linger_request *lreq = | |
3398 | rb_entry(p, struct ceph_osd_linger_request, node); | |
3399 | ||
3400 | dout(" lreq %p linger_id %llu is served by osd%d\n", | |
3401 | lreq, lreq->linger_id, osd->o_osd); | |
3402 | found = true; | |
3403 | ||
3404 | mutex_lock(&lreq->lock); | |
19079203 | 3405 | if (lreq->is_watch && lreq->committed && !lreq->last_error) |
922dab61 ID |
3406 | send_linger_ping(lreq); |
3407 | mutex_unlock(&lreq->lock); | |
3408 | } | |
422d2cb8 | 3409 | |
5aea3dcd ID |
3410 | if (found) |
3411 | list_move_tail(&osd->o_keepalive_item, &slow_osds); | |
422d2cb8 | 3412 | } |
5aea3dcd | 3413 | |
7cc5e38f ID |
3414 | if (opts->osd_request_timeout) { |
3415 | for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { | |
3416 | struct ceph_osd_request *req = | |
3417 | rb_entry(p, struct ceph_osd_request, r_node); | |
3418 | ||
3419 | p = rb_next(p); /* abort_request() */ | |
3420 | ||
3421 | if (time_before(req->r_start_stamp, expiry_cutoff)) { | |
3422 | pr_err_ratelimited("tid %llu on osd%d timeout\n", | |
3423 | req->r_tid, osdc->homeless_osd.o_osd); | |
3424 | abort_request(req, -ETIMEDOUT); | |
3425 | } | |
3426 | } | |
3427 | } | |
3428 | ||
5aea3dcd ID |
3429 | if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) |
3430 | maybe_request_map(osdc); | |
3431 | ||
422d2cb8 | 3432 | while (!list_empty(&slow_osds)) { |
5aea3dcd ID |
3433 | struct ceph_osd *osd = list_first_entry(&slow_osds, |
3434 | struct ceph_osd, | |
3435 | o_keepalive_item); | |
422d2cb8 | 3436 | list_del_init(&osd->o_keepalive_item); |
f24e9980 SW |
3437 | ceph_con_keepalive(&osd->o_con); |
3438 | } | |
3439 | ||
5aea3dcd | 3440 | up_write(&osdc->lock); |
fbca9635 ID |
3441 | schedule_delayed_work(&osdc->timeout_work, |
3442 | osdc->client->options->osd_keepalive_timeout); | |
f24e9980 SW |
3443 | } |
3444 | ||
f5a2041b YS |
3445 | static void handle_osds_timeout(struct work_struct *work) |
3446 | { | |
3447 | struct ceph_osd_client *osdc = | |
3448 | container_of(work, struct ceph_osd_client, | |
3449 | osds_timeout_work.work); | |
a319bf56 | 3450 | unsigned long delay = osdc->client->options->osd_idle_ttl / 4; |
42a2c09f | 3451 | struct ceph_osd *osd, *nosd; |
f5a2041b | 3452 | |
42a2c09f | 3453 | dout("%s osdc %p\n", __func__, osdc); |
5aea3dcd | 3454 | down_write(&osdc->lock); |
42a2c09f ID |
3455 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { |
3456 | if (time_before(jiffies, osd->lru_ttl)) | |
3457 | break; | |
3458 | ||
5aea3dcd | 3459 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); |
922dab61 | 3460 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); |
5aea3dcd | 3461 | close_osd(osd); |
42a2c09f | 3462 | } |
f5a2041b | 3463 | |
5aea3dcd | 3464 | up_write(&osdc->lock); |
f5a2041b YS |
3465 | schedule_delayed_work(&osdc->osds_timeout_work, |
3466 | round_jiffies_relative(delay)); | |
3467 | } | |
3468 | ||
205ee118 ID |
3469 | static int ceph_oloc_decode(void **p, void *end, |
3470 | struct ceph_object_locator *oloc) | |
3471 | { | |
3472 | u8 struct_v, struct_cv; | |
3473 | u32 len; | |
3474 | void *struct_end; | |
3475 | int ret = 0; | |
3476 | ||
3477 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
3478 | struct_v = ceph_decode_8(p); | |
3479 | struct_cv = ceph_decode_8(p); | |
3480 | if (struct_v < 3) { | |
3481 | pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", | |
3482 | struct_v, struct_cv); | |
3483 | goto e_inval; | |
3484 | } | |
3485 | if (struct_cv > 6) { | |
3486 | pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", | |
3487 | struct_v, struct_cv); | |
3488 | goto e_inval; | |
3489 | } | |
3490 | len = ceph_decode_32(p); | |
3491 | ceph_decode_need(p, end, len, e_inval); | |
3492 | struct_end = *p + len; | |
3493 | ||
3494 | oloc->pool = ceph_decode_64(p); | |
3495 | *p += 4; /* skip preferred */ | |
3496 | ||
3497 | len = ceph_decode_32(p); | |
3498 | if (len > 0) { | |
3499 | pr_warn("ceph_object_locator::key is set\n"); | |
3500 | goto e_inval; | |
3501 | } | |
3502 | ||
3503 | if (struct_v >= 5) { | |
cd08e0a2 YZ |
3504 | bool changed = false; |
3505 | ||
205ee118 ID |
3506 | len = ceph_decode_32(p); |
3507 | if (len > 0) { | |
30c156d9 | 3508 | ceph_decode_need(p, end, len, e_inval); |
cd08e0a2 YZ |
3509 | if (!oloc->pool_ns || |
3510 | ceph_compare_string(oloc->pool_ns, *p, len)) | |
3511 | changed = true; | |
30c156d9 | 3512 | *p += len; |
cd08e0a2 YZ |
3513 | } else { |
3514 | if (oloc->pool_ns) | |
3515 | changed = true; | |
3516 | } | |
3517 | if (changed) { | |
3518 | /* redirect changes namespace */ | |
3519 | pr_warn("ceph_object_locator::nspace is changed\n"); | |
3520 | goto e_inval; | |
205ee118 ID |
3521 | } |
3522 | } | |
3523 | ||
3524 | if (struct_v >= 6) { | |
3525 | s64 hash = ceph_decode_64(p); | |
3526 | if (hash != -1) { | |
3527 | pr_warn("ceph_object_locator::hash is set\n"); | |
3528 | goto e_inval; | |
3529 | } | |
3530 | } | |
3531 | ||
3532 | /* skip the rest */ | |
3533 | *p = struct_end; | |
3534 | out: | |
3535 | return ret; | |
3536 | ||
3537 | e_inval: | |
3538 | ret = -EINVAL; | |
3539 | goto out; | |
3540 | } | |
3541 | ||
3542 | static int ceph_redirect_decode(void **p, void *end, | |
3543 | struct ceph_request_redirect *redir) | |
3544 | { | |
3545 | u8 struct_v, struct_cv; | |
3546 | u32 len; | |
3547 | void *struct_end; | |
3548 | int ret; | |
3549 | ||
3550 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
3551 | struct_v = ceph_decode_8(p); | |
3552 | struct_cv = ceph_decode_8(p); | |
3553 | if (struct_cv > 1) { | |
3554 | pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", | |
3555 | struct_v, struct_cv); | |
3556 | goto e_inval; | |
3557 | } | |
3558 | len = ceph_decode_32(p); | |
3559 | ceph_decode_need(p, end, len, e_inval); | |
3560 | struct_end = *p + len; | |
3561 | ||
3562 | ret = ceph_oloc_decode(p, end, &redir->oloc); | |
3563 | if (ret) | |
3564 | goto out; | |
3565 | ||
3566 | len = ceph_decode_32(p); | |
3567 | if (len > 0) { | |
3568 | pr_warn("ceph_request_redirect::object_name is set\n"); | |
3569 | goto e_inval; | |
3570 | } | |
3571 | ||
205ee118 ID |
3572 | /* skip the rest */ |
3573 | *p = struct_end; | |
3574 | out: | |
3575 | return ret; | |
3576 | ||
3577 | e_inval: | |
3578 | ret = -EINVAL; | |
3579 | goto out; | |
3580 | } | |
3581 | ||
fe5da05e ID |
3582 | struct MOSDOpReply { |
3583 | struct ceph_pg pgid; | |
3584 | u64 flags; | |
3585 | int result; | |
3586 | u32 epoch; | |
3587 | int num_ops; | |
3588 | u32 outdata_len[CEPH_OSD_MAX_OPS]; | |
3589 | s32 rval[CEPH_OSD_MAX_OPS]; | |
3590 | int retry_attempt; | |
3591 | struct ceph_eversion replay_version; | |
3592 | u64 user_version; | |
3593 | struct ceph_request_redirect redirect; | |
3594 | }; | |
25845472 | 3595 | |
fe5da05e | 3596 | static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) |
f24e9980 | 3597 | { |
fe5da05e ID |
3598 | void *p = msg->front.iov_base; |
3599 | void *const end = p + msg->front.iov_len; | |
3600 | u16 version = le16_to_cpu(msg->hdr.version); | |
3601 | struct ceph_eversion bad_replay_version; | |
b0b31a8f | 3602 | u8 decode_redir; |
fe5da05e ID |
3603 | u32 len; |
3604 | int ret; | |
3605 | int i; | |
1b83bef2 | 3606 | |
fe5da05e ID |
3607 | ceph_decode_32_safe(&p, end, len, e_inval); |
3608 | ceph_decode_need(&p, end, len, e_inval); | |
3609 | p += len; /* skip oid */ | |
1b83bef2 | 3610 | |
fe5da05e ID |
3611 | ret = ceph_decode_pgid(&p, end, &m->pgid); |
3612 | if (ret) | |
3613 | return ret; | |
1b83bef2 | 3614 | |
fe5da05e ID |
3615 | ceph_decode_64_safe(&p, end, m->flags, e_inval); |
3616 | ceph_decode_32_safe(&p, end, m->result, e_inval); | |
3617 | ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); | |
3618 | memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); | |
3619 | p += sizeof(bad_replay_version); | |
3620 | ceph_decode_32_safe(&p, end, m->epoch, e_inval); | |
1b83bef2 | 3621 | |
fe5da05e ID |
3622 | ceph_decode_32_safe(&p, end, m->num_ops, e_inval); |
3623 | if (m->num_ops > ARRAY_SIZE(m->outdata_len)) | |
3624 | goto e_inval; | |
1b83bef2 | 3625 | |
fe5da05e ID |
3626 | ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), |
3627 | e_inval); | |
3628 | for (i = 0; i < m->num_ops; i++) { | |
1b83bef2 | 3629 | struct ceph_osd_op *op = p; |
1b83bef2 | 3630 | |
fe5da05e | 3631 | m->outdata_len[i] = le32_to_cpu(op->payload_len); |
1b83bef2 SW |
3632 | p += sizeof(*op); |
3633 | } | |
1b83bef2 | 3634 | |
fe5da05e ID |
3635 | ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); |
3636 | for (i = 0; i < m->num_ops; i++) | |
3637 | ceph_decode_32_safe(&p, end, m->rval[i], e_inval); | |
f24e9980 | 3638 | |
fe5da05e ID |
3639 | if (version >= 5) { |
3640 | ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); | |
3641 | memcpy(&m->replay_version, p, sizeof(m->replay_version)); | |
3642 | p += sizeof(m->replay_version); | |
3643 | ceph_decode_64_safe(&p, end, m->user_version, e_inval); | |
3644 | } else { | |
3645 | m->replay_version = bad_replay_version; /* struct */ | |
3646 | m->user_version = le64_to_cpu(m->replay_version.version); | |
3647 | } | |
eb845ff1 | 3648 | |
fe5da05e ID |
3649 | if (version >= 6) { |
3650 | if (version >= 7) | |
3651 | ceph_decode_8_safe(&p, end, decode_redir, e_inval); | |
b0b31a8f ID |
3652 | else |
3653 | decode_redir = 1; | |
3654 | } else { | |
3655 | decode_redir = 0; | |
3656 | } | |
3657 | ||
3658 | if (decode_redir) { | |
fe5da05e ID |
3659 | ret = ceph_redirect_decode(&p, end, &m->redirect); |
3660 | if (ret) | |
3661 | return ret; | |
205ee118 | 3662 | } else { |
fe5da05e | 3663 | ceph_oloc_init(&m->redirect.oloc); |
205ee118 | 3664 | } |
f24e9980 | 3665 | |
fe5da05e ID |
3666 | return 0; |
3667 | ||
3668 | e_inval: | |
3669 | return -EINVAL; | |
3670 | } | |
3671 | ||
3672 | /* | |
b18b9550 ID |
3673 | * Handle MOSDOpReply. Set ->r_result and call the callback if it is |
3674 | * specified. | |
fe5da05e | 3675 | */ |
5aea3dcd | 3676 | static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) |
fe5da05e | 3677 | { |
5aea3dcd | 3678 | struct ceph_osd_client *osdc = osd->o_osdc; |
fe5da05e ID |
3679 | struct ceph_osd_request *req; |
3680 | struct MOSDOpReply m; | |
3681 | u64 tid = le64_to_cpu(msg->hdr.tid); | |
3682 | u32 data_len = 0; | |
fe5da05e ID |
3683 | int ret; |
3684 | int i; | |
3685 | ||
3686 | dout("%s msg %p tid %llu\n", __func__, msg, tid); | |
3687 | ||
5aea3dcd ID |
3688 | down_read(&osdc->lock); |
3689 | if (!osd_registered(osd)) { | |
3690 | dout("%s osd%d unknown\n", __func__, osd->o_osd); | |
3691 | goto out_unlock_osdc; | |
3692 | } | |
3693 | WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); | |
3694 | ||
3695 | mutex_lock(&osd->lock); | |
3696 | req = lookup_request(&osd->o_requests, tid); | |
fe5da05e | 3697 | if (!req) { |
5aea3dcd ID |
3698 | dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); |
3699 | goto out_unlock_session; | |
fe5da05e | 3700 | } |
fe5da05e | 3701 | |
cd08e0a2 | 3702 | m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns; |
fe5da05e | 3703 | ret = decode_MOSDOpReply(msg, &m); |
cd08e0a2 | 3704 | m.redirect.oloc.pool_ns = NULL; |
fe5da05e ID |
3705 | if (ret) { |
3706 | pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", | |
3707 | req->r_tid, ret); | |
3708 | ceph_msg_dump(msg); | |
3709 | goto fail_request; | |
3710 | } | |
3711 | dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", | |
3712 | __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, | |
3713 | m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), | |
3714 | le64_to_cpu(m.replay_version.version), m.user_version); | |
3715 | ||
3716 | if (m.retry_attempt >= 0) { | |
3717 | if (m.retry_attempt != req->r_attempts - 1) { | |
3718 | dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", | |
3719 | req, req->r_tid, m.retry_attempt, | |
3720 | req->r_attempts - 1); | |
5aea3dcd | 3721 | goto out_unlock_session; |
fe5da05e ID |
3722 | } |
3723 | } else { | |
3724 | WARN_ON(1); /* MOSDOpReply v4 is assumed */ | |
3725 | } | |
3726 | ||
3727 | if (!ceph_oloc_empty(&m.redirect.oloc)) { | |
3728 | dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, | |
3729 | m.redirect.oloc.pool); | |
5aea3dcd ID |
3730 | unlink_request(osd, req); |
3731 | mutex_unlock(&osd->lock); | |
205ee118 | 3732 | |
30c156d9 YZ |
3733 | /* |
3734 | * Not ceph_oloc_copy() - changing pool_ns is not | |
3735 | * supported. | |
3736 | */ | |
3737 | req->r_t.target_oloc.pool = m.redirect.oloc.pool; | |
890bd0f8 JL |
3738 | req->r_flags |= CEPH_OSD_FLAG_REDIRECTED | |
3739 | CEPH_OSD_FLAG_IGNORE_OVERLAY | | |
3740 | CEPH_OSD_FLAG_IGNORE_CACHE; | |
5aea3dcd ID |
3741 | req->r_tid = 0; |
3742 | __submit_request(req, false); | |
3743 | goto out_unlock_osdc; | |
205ee118 ID |
3744 | } |
3745 | ||
117d96a0 ID |
3746 | if (m.result == -EAGAIN) { |
3747 | dout("req %p tid %llu EAGAIN\n", req, req->r_tid); | |
3748 | unlink_request(osd, req); | |
3749 | mutex_unlock(&osd->lock); | |
3750 | ||
3751 | /* | |
3752 | * The object is missing on the replica or not (yet) | |
3753 | * readable. Clear pgid to force a resend to the primary | |
3754 | * via legacy_change. | |
3755 | */ | |
3756 | req->r_t.pgid.pool = 0; | |
3757 | req->r_t.pgid.seed = 0; | |
3758 | WARN_ON(!req->r_t.used_replica); | |
3759 | req->r_flags &= ~(CEPH_OSD_FLAG_BALANCE_READS | | |
3760 | CEPH_OSD_FLAG_LOCALIZE_READS); | |
3761 | req->r_tid = 0; | |
3762 | __submit_request(req, false); | |
3763 | goto out_unlock_osdc; | |
3764 | } | |
3765 | ||
fe5da05e ID |
3766 | if (m.num_ops != req->r_num_ops) { |
3767 | pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, | |
3768 | req->r_num_ops, req->r_tid); | |
3769 | goto fail_request; | |
f24e9980 | 3770 | } |
fe5da05e ID |
3771 | for (i = 0; i < req->r_num_ops; i++) { |
3772 | dout(" req %p tid %llu op %d rval %d len %u\n", req, | |
3773 | req->r_tid, i, m.rval[i], m.outdata_len[i]); | |
3774 | req->r_ops[i].rval = m.rval[i]; | |
3775 | req->r_ops[i].outdata_len = m.outdata_len[i]; | |
3776 | data_len += m.outdata_len[i]; | |
3777 | } | |
3778 | if (data_len != le32_to_cpu(msg->hdr.data_len)) { | |
3779 | pr_err("sum of lens %u != %u for tid %llu\n", data_len, | |
3780 | le32_to_cpu(msg->hdr.data_len), req->r_tid); | |
3781 | goto fail_request; | |
3782 | } | |
b18b9550 ID |
3783 | dout("%s req %p tid %llu result %d data_len %u\n", __func__, |
3784 | req, req->r_tid, m.result, data_len); | |
f24e9980 | 3785 | |
b18b9550 ID |
3786 | /* |
3787 | * Since we only ever request ONDISK, we should only ever get | |
3788 | * one (type of) reply back. | |
3789 | */ | |
3790 | WARN_ON(!(m.flags & CEPH_OSD_FLAG_ONDISK)); | |
3791 | req->r_result = m.result ?: data_len; | |
3792 | finish_request(req); | |
5aea3dcd ID |
3793 | mutex_unlock(&osd->lock); |
3794 | up_read(&osdc->lock); | |
f24e9980 | 3795 | |
b18b9550 | 3796 | __complete_request(req); |
f24e9980 SW |
3797 | return; |
3798 | ||
fe5da05e | 3799 | fail_request: |
4609245e | 3800 | complete_request(req, -EIO); |
5aea3dcd ID |
3801 | out_unlock_session: |
3802 | mutex_unlock(&osd->lock); | |
3803 | out_unlock_osdc: | |
3804 | up_read(&osdc->lock); | |
f24e9980 SW |
3805 | } |
3806 | ||
42c1b124 ID |
3807 | static void set_pool_was_full(struct ceph_osd_client *osdc) |
3808 | { | |
3809 | struct rb_node *n; | |
3810 | ||
3811 | for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { | |
3812 | struct ceph_pg_pool_info *pi = | |
3813 | rb_entry(n, struct ceph_pg_pool_info, node); | |
3814 | ||
3815 | pi->was_full = __pool_full(pi); | |
3816 | } | |
3817 | } | |
3818 | ||
5aea3dcd | 3819 | static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) |
f24e9980 | 3820 | { |
5aea3dcd | 3821 | struct ceph_pg_pool_info *pi; |
f24e9980 | 3822 | |
5aea3dcd ID |
3823 | pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); |
3824 | if (!pi) | |
3825 | return false; | |
f24e9980 | 3826 | |
5aea3dcd | 3827 | return pi->was_full && !__pool_full(pi); |
422d2cb8 YS |
3828 | } |
3829 | ||
922dab61 ID |
3830 | static enum calc_target_result |
3831 | recalc_linger_target(struct ceph_osd_linger_request *lreq) | |
3832 | { | |
3833 | struct ceph_osd_client *osdc = lreq->osdc; | |
3834 | enum calc_target_result ct_res; | |
3835 | ||
8edf84ba | 3836 | ct_res = calc_target(osdc, &lreq->t, true); |
922dab61 ID |
3837 | if (ct_res == CALC_TARGET_NEED_RESEND) { |
3838 | struct ceph_osd *osd; | |
3839 | ||
3840 | osd = lookup_create_osd(osdc, lreq->t.osd, true); | |
3841 | if (osd != lreq->osd) { | |
3842 | unlink_linger(lreq->osd, lreq); | |
3843 | link_linger(osd, lreq); | |
3844 | } | |
3845 | } | |
3846 | ||
3847 | return ct_res; | |
3848 | } | |
3849 | ||
422d2cb8 | 3850 | /* |
5aea3dcd | 3851 | * Requeue requests whose mapping to an OSD has changed. |
422d2cb8 | 3852 | */ |
5aea3dcd ID |
3853 | static void scan_requests(struct ceph_osd *osd, |
3854 | bool force_resend, | |
3855 | bool cleared_full, | |
3856 | bool check_pool_cleared_full, | |
3857 | struct rb_root *need_resend, | |
3858 | struct list_head *need_resend_linger) | |
422d2cb8 | 3859 | { |
5aea3dcd ID |
3860 | struct ceph_osd_client *osdc = osd->o_osdc; |
3861 | struct rb_node *n; | |
3862 | bool force_resend_writes; | |
3863 | ||
922dab61 ID |
3864 | for (n = rb_first(&osd->o_linger_requests); n; ) { |
3865 | struct ceph_osd_linger_request *lreq = | |
3866 | rb_entry(n, struct ceph_osd_linger_request, node); | |
3867 | enum calc_target_result ct_res; | |
3868 | ||
3869 | n = rb_next(n); /* recalc_linger_target() */ | |
3870 | ||
3871 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, | |
3872 | lreq->linger_id); | |
3873 | ct_res = recalc_linger_target(lreq); | |
3874 | switch (ct_res) { | |
3875 | case CALC_TARGET_NO_ACTION: | |
3876 | force_resend_writes = cleared_full || | |
3877 | (check_pool_cleared_full && | |
3878 | pool_cleared_full(osdc, lreq->t.base_oloc.pool)); | |
3879 | if (!force_resend && !force_resend_writes) | |
3880 | break; | |
3881 | ||
df561f66 | 3882 | fallthrough; |
922dab61 | 3883 | case CALC_TARGET_NEED_RESEND: |
4609245e | 3884 | cancel_linger_map_check(lreq); |
922dab61 ID |
3885 | /* |
3886 | * scan_requests() for the previous epoch(s) | |
3887 | * may have already added it to the list, since | |
3888 | * it's not unlinked here. | |
3889 | */ | |
3890 | if (list_empty(&lreq->scan_item)) | |
3891 | list_add_tail(&lreq->scan_item, need_resend_linger); | |
3892 | break; | |
3893 | case CALC_TARGET_POOL_DNE: | |
a10bcb19 | 3894 | list_del_init(&lreq->scan_item); |
4609245e | 3895 | check_linger_pool_dne(lreq); |
922dab61 ID |
3896 | break; |
3897 | } | |
3898 | } | |
3899 | ||
5aea3dcd ID |
3900 | for (n = rb_first(&osd->o_requests); n; ) { |
3901 | struct ceph_osd_request *req = | |
3902 | rb_entry(n, struct ceph_osd_request, r_node); | |
3903 | enum calc_target_result ct_res; | |
3904 | ||
4609245e | 3905 | n = rb_next(n); /* unlink_request(), check_pool_dne() */ |
5aea3dcd ID |
3906 | |
3907 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); | |
8edf84ba | 3908 | ct_res = calc_target(osdc, &req->r_t, false); |
5aea3dcd ID |
3909 | switch (ct_res) { |
3910 | case CALC_TARGET_NO_ACTION: | |
3911 | force_resend_writes = cleared_full || | |
3912 | (check_pool_cleared_full && | |
3913 | pool_cleared_full(osdc, req->r_t.base_oloc.pool)); | |
3914 | if (!force_resend && | |
3915 | (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || | |
3916 | !force_resend_writes)) | |
3917 | break; | |
3918 | ||
df561f66 | 3919 | fallthrough; |
5aea3dcd | 3920 | case CALC_TARGET_NEED_RESEND: |
4609245e | 3921 | cancel_map_check(req); |
5aea3dcd ID |
3922 | unlink_request(osd, req); |
3923 | insert_request(need_resend, req); | |
3924 | break; | |
3925 | case CALC_TARGET_POOL_DNE: | |
4609245e | 3926 | check_pool_dne(req); |
5aea3dcd | 3927 | break; |
b0494532 | 3928 | } |
6f6c7006 | 3929 | } |
422d2cb8 | 3930 | } |
6f6c7006 | 3931 | |
42c1b124 | 3932 | static int handle_one_map(struct ceph_osd_client *osdc, |
5aea3dcd ID |
3933 | void *p, void *end, bool incremental, |
3934 | struct rb_root *need_resend, | |
3935 | struct list_head *need_resend_linger) | |
42c1b124 ID |
3936 | { |
3937 | struct ceph_osdmap *newmap; | |
3938 | struct rb_node *n; | |
3939 | bool skipped_map = false; | |
3940 | bool was_full; | |
3941 | ||
b7ec35b3 | 3942 | was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); |
42c1b124 ID |
3943 | set_pool_was_full(osdc); |
3944 | ||
3945 | if (incremental) | |
cd1a677c ID |
3946 | newmap = osdmap_apply_incremental(&p, end, |
3947 | ceph_msgr2(osdc->client), | |
3948 | osdc->osdmap); | |
42c1b124 | 3949 | else |
cd1a677c | 3950 | newmap = ceph_osdmap_decode(&p, end, ceph_msgr2(osdc->client)); |
42c1b124 ID |
3951 | if (IS_ERR(newmap)) |
3952 | return PTR_ERR(newmap); | |
3953 | ||
3954 | if (newmap != osdc->osdmap) { | |
3955 | /* | |
3956 | * Preserve ->was_full before destroying the old map. | |
3957 | * For pools that weren't in the old map, ->was_full | |
3958 | * should be false. | |
3959 | */ | |
3960 | for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { | |
3961 | struct ceph_pg_pool_info *pi = | |
3962 | rb_entry(n, struct ceph_pg_pool_info, node); | |
3963 | struct ceph_pg_pool_info *old_pi; | |
3964 | ||
3965 | old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); | |
3966 | if (old_pi) | |
3967 | pi->was_full = old_pi->was_full; | |
3968 | else | |
3969 | WARN_ON(pi->was_full); | |
3970 | } | |
3971 | ||
3972 | if (osdc->osdmap->epoch && | |
3973 | osdc->osdmap->epoch + 1 < newmap->epoch) { | |
3974 | WARN_ON(incremental); | |
3975 | skipped_map = true; | |
3976 | } | |
3977 | ||
3978 | ceph_osdmap_destroy(osdc->osdmap); | |
3979 | osdc->osdmap = newmap; | |
3980 | } | |
3981 | ||
b7ec35b3 | 3982 | was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); |
5aea3dcd ID |
3983 | scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, |
3984 | need_resend, need_resend_linger); | |
3985 | ||
3986 | for (n = rb_first(&osdc->osds); n; ) { | |
3987 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
3988 | ||
3989 | n = rb_next(n); /* close_osd() */ | |
3990 | ||
3991 | scan_requests(osd, skipped_map, was_full, true, need_resend, | |
3992 | need_resend_linger); | |
3993 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
3994 | memcmp(&osd->o_con.peer_addr, | |
3995 | ceph_osd_addr(osdc->osdmap, osd->o_osd), | |
3996 | sizeof(struct ceph_entity_addr))) | |
3997 | close_osd(osd); | |
3998 | } | |
42c1b124 ID |
3999 | |
4000 | return 0; | |
4001 | } | |
6f6c7006 | 4002 | |
5aea3dcd ID |
4003 | static void kick_requests(struct ceph_osd_client *osdc, |
4004 | struct rb_root *need_resend, | |
4005 | struct list_head *need_resend_linger) | |
4006 | { | |
922dab61 | 4007 | struct ceph_osd_linger_request *lreq, *nlreq; |
04c7d789 | 4008 | enum calc_target_result ct_res; |
5aea3dcd ID |
4009 | struct rb_node *n; |
4010 | ||
04c7d789 ID |
4011 | /* make sure need_resend targets reflect latest map */ |
4012 | for (n = rb_first(need_resend); n; ) { | |
4013 | struct ceph_osd_request *req = | |
4014 | rb_entry(n, struct ceph_osd_request, r_node); | |
4015 | ||
4016 | n = rb_next(n); | |
4017 | ||
4018 | if (req->r_t.epoch < osdc->osdmap->epoch) { | |
8edf84ba | 4019 | ct_res = calc_target(osdc, &req->r_t, false); |
04c7d789 ID |
4020 | if (ct_res == CALC_TARGET_POOL_DNE) { |
4021 | erase_request(need_resend, req); | |
4022 | check_pool_dne(req); | |
4023 | } | |
4024 | } | |
4025 | } | |
4026 | ||
5aea3dcd ID |
4027 | for (n = rb_first(need_resend); n; ) { |
4028 | struct ceph_osd_request *req = | |
4029 | rb_entry(n, struct ceph_osd_request, r_node); | |
4030 | struct ceph_osd *osd; | |
4031 | ||
4032 | n = rb_next(n); | |
4033 | erase_request(need_resend, req); /* before link_request() */ | |
4034 | ||
5aea3dcd ID |
4035 | osd = lookup_create_osd(osdc, req->r_t.osd, true); |
4036 | link_request(osd, req); | |
4037 | if (!req->r_linger) { | |
4038 | if (!osd_homeless(osd) && !req->r_t.paused) | |
4039 | send_request(req); | |
922dab61 ID |
4040 | } else { |
4041 | cancel_linger_request(req); | |
5aea3dcd ID |
4042 | } |
4043 | } | |
922dab61 ID |
4044 | |
4045 | list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { | |
4046 | if (!osd_homeless(lreq->osd)) | |
4047 | send_linger(lreq); | |
4048 | ||
4049 | list_del_init(&lreq->scan_item); | |
4050 | } | |
5aea3dcd ID |
4051 | } |
4052 | ||
f24e9980 SW |
4053 | /* |
4054 | * Process updated osd map. | |
4055 | * | |
4056 | * The message contains any number of incremental and full maps, normally | |
4057 | * indicating some sort of topology change in the cluster. Kick requests | |
4058 | * off to different OSDs as needed. | |
4059 | */ | |
4060 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
4061 | { | |
42c1b124 ID |
4062 | void *p = msg->front.iov_base; |
4063 | void *const end = p + msg->front.iov_len; | |
f24e9980 SW |
4064 | u32 nr_maps, maplen; |
4065 | u32 epoch; | |
f24e9980 | 4066 | struct ceph_fsid fsid; |
5aea3dcd ID |
4067 | struct rb_root need_resend = RB_ROOT; |
4068 | LIST_HEAD(need_resend_linger); | |
42c1b124 ID |
4069 | bool handled_incremental = false; |
4070 | bool was_pauserd, was_pausewr; | |
4071 | bool pauserd, pausewr; | |
4072 | int err; | |
f24e9980 | 4073 | |
42c1b124 | 4074 | dout("%s have %u\n", __func__, osdc->osdmap->epoch); |
5aea3dcd | 4075 | down_write(&osdc->lock); |
f24e9980 SW |
4076 | |
4077 | /* verify fsid */ | |
4078 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
4079 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d | 4080 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
42c1b124 | 4081 | goto bad; |
f24e9980 | 4082 | |
b7ec35b3 ID |
4083 | was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); |
4084 | was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || | |
4085 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || | |
42c1b124 | 4086 | have_pool_full(osdc); |
9a1ea2db | 4087 | |
f24e9980 SW |
4088 | /* incremental maps */ |
4089 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
4090 | dout(" %d inc maps\n", nr_maps); | |
4091 | while (nr_maps > 0) { | |
4092 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
4093 | epoch = ceph_decode_32(&p); |
4094 | maplen = ceph_decode_32(&p); | |
f24e9980 | 4095 | ceph_decode_need(&p, end, maplen, bad); |
42c1b124 ID |
4096 | if (osdc->osdmap->epoch && |
4097 | osdc->osdmap->epoch + 1 == epoch) { | |
f24e9980 SW |
4098 | dout("applying incremental map %u len %d\n", |
4099 | epoch, maplen); | |
5aea3dcd ID |
4100 | err = handle_one_map(osdc, p, p + maplen, true, |
4101 | &need_resend, &need_resend_linger); | |
42c1b124 | 4102 | if (err) |
f24e9980 | 4103 | goto bad; |
42c1b124 | 4104 | handled_incremental = true; |
f24e9980 SW |
4105 | } else { |
4106 | dout("ignoring incremental map %u len %d\n", | |
4107 | epoch, maplen); | |
4108 | } | |
42c1b124 | 4109 | p += maplen; |
f24e9980 SW |
4110 | nr_maps--; |
4111 | } | |
42c1b124 | 4112 | if (handled_incremental) |
f24e9980 SW |
4113 | goto done; |
4114 | ||
4115 | /* full maps */ | |
4116 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
4117 | dout(" %d full maps\n", nr_maps); | |
4118 | while (nr_maps) { | |
4119 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
4120 | epoch = ceph_decode_32(&p); |
4121 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
4122 | ceph_decode_need(&p, end, maplen, bad); |
4123 | if (nr_maps > 1) { | |
4124 | dout("skipping non-latest full map %u len %d\n", | |
4125 | epoch, maplen); | |
e5253a7b | 4126 | } else if (osdc->osdmap->epoch >= epoch) { |
f24e9980 SW |
4127 | dout("skipping full map %u len %d, " |
4128 | "older than our %u\n", epoch, maplen, | |
4129 | osdc->osdmap->epoch); | |
4130 | } else { | |
4131 | dout("taking full map %u len %d\n", epoch, maplen); | |
5aea3dcd ID |
4132 | err = handle_one_map(osdc, p, p + maplen, false, |
4133 | &need_resend, &need_resend_linger); | |
42c1b124 | 4134 | if (err) |
f24e9980 | 4135 | goto bad; |
f24e9980 SW |
4136 | } |
4137 | p += maplen; | |
4138 | nr_maps--; | |
4139 | } | |
4140 | ||
4141 | done: | |
cd634fb6 SW |
4142 | /* |
4143 | * subscribe to subsequent osdmap updates if full to ensure | |
4144 | * we find out when we are no longer full and stop returning | |
4145 | * ENOSPC. | |
4146 | */ | |
b7ec35b3 ID |
4147 | pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); |
4148 | pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || | |
4149 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || | |
42c1b124 | 4150 | have_pool_full(osdc); |
58eb7932 JL |
4151 | if (was_pauserd || was_pausewr || pauserd || pausewr || |
4152 | osdc->osdmap->epoch < osdc->epoch_barrier) | |
42c1b124 | 4153 | maybe_request_map(osdc); |
cd634fb6 | 4154 | |
5aea3dcd | 4155 | kick_requests(osdc, &need_resend, &need_resend_linger); |
42c1b124 | 4156 | |
fc36d0a4 | 4157 | ceph_osdc_abort_on_full(osdc); |
42c1b124 ID |
4158 | ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, |
4159 | osdc->osdmap->epoch); | |
5aea3dcd | 4160 | up_write(&osdc->lock); |
03066f23 | 4161 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
4162 | return; |
4163 | ||
4164 | bad: | |
4165 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 4166 | ceph_msg_dump(msg); |
5aea3dcd ID |
4167 | up_write(&osdc->lock); |
4168 | } | |
4169 | ||
4170 | /* | |
4171 | * Resubmit requests pending on the given osd. | |
4172 | */ | |
4173 | static void kick_osd_requests(struct ceph_osd *osd) | |
4174 | { | |
4175 | struct rb_node *n; | |
4176 | ||
a02a946d ID |
4177 | clear_backoffs(osd); |
4178 | ||
922dab61 | 4179 | for (n = rb_first(&osd->o_requests); n; ) { |
5aea3dcd ID |
4180 | struct ceph_osd_request *req = |
4181 | rb_entry(n, struct ceph_osd_request, r_node); | |
4182 | ||
922dab61 ID |
4183 | n = rb_next(n); /* cancel_linger_request() */ |
4184 | ||
5aea3dcd ID |
4185 | if (!req->r_linger) { |
4186 | if (!req->r_t.paused) | |
4187 | send_request(req); | |
922dab61 ID |
4188 | } else { |
4189 | cancel_linger_request(req); | |
5aea3dcd ID |
4190 | } |
4191 | } | |
922dab61 ID |
4192 | for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { |
4193 | struct ceph_osd_linger_request *lreq = | |
4194 | rb_entry(n, struct ceph_osd_linger_request, node); | |
4195 | ||
4196 | send_linger(lreq); | |
4197 | } | |
5aea3dcd ID |
4198 | } |
4199 | ||
4200 | /* | |
4201 | * If the osd connection drops, we need to resubmit all requests. | |
4202 | */ | |
4203 | static void osd_fault(struct ceph_connection *con) | |
4204 | { | |
4205 | struct ceph_osd *osd = con->private; | |
4206 | struct ceph_osd_client *osdc = osd->o_osdc; | |
4207 | ||
4208 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
4209 | ||
4210 | down_write(&osdc->lock); | |
4211 | if (!osd_registered(osd)) { | |
4212 | dout("%s osd%d unknown\n", __func__, osd->o_osd); | |
4213 | goto out_unlock; | |
4214 | } | |
4215 | ||
4216 | if (!reopen_osd(osd)) | |
4217 | kick_osd_requests(osd); | |
4218 | maybe_request_map(osdc); | |
4219 | ||
4220 | out_unlock: | |
4221 | up_write(&osdc->lock); | |
f24e9980 SW |
4222 | } |
4223 | ||
a02a946d ID |
4224 | struct MOSDBackoff { |
4225 | struct ceph_spg spgid; | |
4226 | u32 map_epoch; | |
4227 | u8 op; | |
4228 | u64 id; | |
4229 | struct ceph_hobject_id *begin; | |
4230 | struct ceph_hobject_id *end; | |
4231 | }; | |
4232 | ||
4233 | static int decode_MOSDBackoff(const struct ceph_msg *msg, struct MOSDBackoff *m) | |
4234 | { | |
4235 | void *p = msg->front.iov_base; | |
4236 | void *const end = p + msg->front.iov_len; | |
4237 | u8 struct_v; | |
4238 | u32 struct_len; | |
4239 | int ret; | |
4240 | ||
4241 | ret = ceph_start_decoding(&p, end, 1, "spg_t", &struct_v, &struct_len); | |
4242 | if (ret) | |
4243 | return ret; | |
4244 | ||
4245 | ret = ceph_decode_pgid(&p, end, &m->spgid.pgid); | |
4246 | if (ret) | |
4247 | return ret; | |
4248 | ||
4249 | ceph_decode_8_safe(&p, end, m->spgid.shard, e_inval); | |
4250 | ceph_decode_32_safe(&p, end, m->map_epoch, e_inval); | |
4251 | ceph_decode_8_safe(&p, end, m->op, e_inval); | |
4252 | ceph_decode_64_safe(&p, end, m->id, e_inval); | |
4253 | ||
4254 | m->begin = kzalloc(sizeof(*m->begin), GFP_NOIO); | |
4255 | if (!m->begin) | |
4256 | return -ENOMEM; | |
4257 | ||
4258 | ret = decode_hoid(&p, end, m->begin); | |
4259 | if (ret) { | |
4260 | free_hoid(m->begin); | |
4261 | return ret; | |
4262 | } | |
4263 | ||
4264 | m->end = kzalloc(sizeof(*m->end), GFP_NOIO); | |
4265 | if (!m->end) { | |
4266 | free_hoid(m->begin); | |
4267 | return -ENOMEM; | |
4268 | } | |
4269 | ||
4270 | ret = decode_hoid(&p, end, m->end); | |
4271 | if (ret) { | |
4272 | free_hoid(m->begin); | |
4273 | free_hoid(m->end); | |
4274 | return ret; | |
4275 | } | |
4276 | ||
4277 | return 0; | |
4278 | ||
4279 | e_inval: | |
4280 | return -EINVAL; | |
4281 | } | |
4282 | ||
4283 | static struct ceph_msg *create_backoff_message( | |
4284 | const struct ceph_osd_backoff *backoff, | |
4285 | u32 map_epoch) | |
4286 | { | |
4287 | struct ceph_msg *msg; | |
4288 | void *p, *end; | |
4289 | int msg_size; | |
4290 | ||
4291 | msg_size = CEPH_ENCODING_START_BLK_LEN + | |
4292 | CEPH_PGID_ENCODING_LEN + 1; /* spgid */ | |
4293 | msg_size += 4 + 1 + 8; /* map_epoch, op, id */ | |
4294 | msg_size += CEPH_ENCODING_START_BLK_LEN + | |
4295 | hoid_encoding_size(backoff->begin); | |
4296 | msg_size += CEPH_ENCODING_START_BLK_LEN + | |
4297 | hoid_encoding_size(backoff->end); | |
4298 | ||
4299 | msg = ceph_msg_new(CEPH_MSG_OSD_BACKOFF, msg_size, GFP_NOIO, true); | |
4300 | if (!msg) | |
4301 | return NULL; | |
4302 | ||
4303 | p = msg->front.iov_base; | |
4304 | end = p + msg->front_alloc_len; | |
4305 | ||
4306 | encode_spgid(&p, &backoff->spgid); | |
4307 | ceph_encode_32(&p, map_epoch); | |
4308 | ceph_encode_8(&p, CEPH_OSD_BACKOFF_OP_ACK_BLOCK); | |
4309 | ceph_encode_64(&p, backoff->id); | |
4310 | encode_hoid(&p, end, backoff->begin); | |
4311 | encode_hoid(&p, end, backoff->end); | |
4312 | BUG_ON(p != end); | |
4313 | ||
4314 | msg->front.iov_len = p - msg->front.iov_base; | |
4315 | msg->hdr.version = cpu_to_le16(1); /* MOSDBackoff v1 */ | |
4316 | msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); | |
4317 | ||
4318 | return msg; | |
4319 | } | |
4320 | ||
4321 | static void handle_backoff_block(struct ceph_osd *osd, struct MOSDBackoff *m) | |
4322 | { | |
4323 | struct ceph_spg_mapping *spg; | |
4324 | struct ceph_osd_backoff *backoff; | |
4325 | struct ceph_msg *msg; | |
4326 | ||
4327 | dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, | |
4328 | m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); | |
4329 | ||
4330 | spg = lookup_spg_mapping(&osd->o_backoff_mappings, &m->spgid); | |
4331 | if (!spg) { | |
4332 | spg = alloc_spg_mapping(); | |
4333 | if (!spg) { | |
4334 | pr_err("%s failed to allocate spg\n", __func__); | |
4335 | return; | |
4336 | } | |
4337 | spg->spgid = m->spgid; /* struct */ | |
4338 | insert_spg_mapping(&osd->o_backoff_mappings, spg); | |
4339 | } | |
4340 | ||
4341 | backoff = alloc_backoff(); | |
4342 | if (!backoff) { | |
4343 | pr_err("%s failed to allocate backoff\n", __func__); | |
4344 | return; | |
4345 | } | |
4346 | backoff->spgid = m->spgid; /* struct */ | |
4347 | backoff->id = m->id; | |
4348 | backoff->begin = m->begin; | |
4349 | m->begin = NULL; /* backoff now owns this */ | |
4350 | backoff->end = m->end; | |
4351 | m->end = NULL; /* ditto */ | |
4352 | ||
4353 | insert_backoff(&spg->backoffs, backoff); | |
4354 | insert_backoff_by_id(&osd->o_backoffs_by_id, backoff); | |
4355 | ||
4356 | /* | |
4357 | * Ack with original backoff's epoch so that the OSD can | |
4358 | * discard this if there was a PG split. | |
4359 | */ | |
4360 | msg = create_backoff_message(backoff, m->map_epoch); | |
4361 | if (!msg) { | |
4362 | pr_err("%s failed to allocate msg\n", __func__); | |
4363 | return; | |
4364 | } | |
4365 | ceph_con_send(&osd->o_con, msg); | |
4366 | } | |
4367 | ||
4368 | static bool target_contained_by(const struct ceph_osd_request_target *t, | |
4369 | const struct ceph_hobject_id *begin, | |
4370 | const struct ceph_hobject_id *end) | |
4371 | { | |
4372 | struct ceph_hobject_id hoid; | |
4373 | int cmp; | |
4374 | ||
4375 | hoid_fill_from_target(&hoid, t); | |
4376 | cmp = hoid_compare(&hoid, begin); | |
4377 | return !cmp || (cmp > 0 && hoid_compare(&hoid, end) < 0); | |
4378 | } | |
4379 | ||
4380 | static void handle_backoff_unblock(struct ceph_osd *osd, | |
4381 | const struct MOSDBackoff *m) | |
4382 | { | |
4383 | struct ceph_spg_mapping *spg; | |
4384 | struct ceph_osd_backoff *backoff; | |
4385 | struct rb_node *n; | |
4386 | ||
4387 | dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, | |
4388 | m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); | |
4389 | ||
4390 | backoff = lookup_backoff_by_id(&osd->o_backoffs_by_id, m->id); | |
4391 | if (!backoff) { | |
4392 | pr_err("%s osd%d spgid %llu.%xs%d id %llu backoff dne\n", | |
4393 | __func__, osd->o_osd, m->spgid.pgid.pool, | |
4394 | m->spgid.pgid.seed, m->spgid.shard, m->id); | |
4395 | return; | |
4396 | } | |
4397 | ||
4398 | if (hoid_compare(backoff->begin, m->begin) && | |
4399 | hoid_compare(backoff->end, m->end)) { | |
4400 | pr_err("%s osd%d spgid %llu.%xs%d id %llu bad range?\n", | |
4401 | __func__, osd->o_osd, m->spgid.pgid.pool, | |
4402 | m->spgid.pgid.seed, m->spgid.shard, m->id); | |
4403 | /* unblock it anyway... */ | |
4404 | } | |
4405 | ||
4406 | spg = lookup_spg_mapping(&osd->o_backoff_mappings, &backoff->spgid); | |
4407 | BUG_ON(!spg); | |
4408 | ||
4409 | erase_backoff(&spg->backoffs, backoff); | |
4410 | erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); | |
4411 | free_backoff(backoff); | |
4412 | ||
4413 | if (RB_EMPTY_ROOT(&spg->backoffs)) { | |
4414 | erase_spg_mapping(&osd->o_backoff_mappings, spg); | |
4415 | free_spg_mapping(spg); | |
4416 | } | |
4417 | ||
4418 | for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { | |
4419 | struct ceph_osd_request *req = | |
4420 | rb_entry(n, struct ceph_osd_request, r_node); | |
4421 | ||
4422 | if (!ceph_spg_compare(&req->r_t.spgid, &m->spgid)) { | |
4423 | /* | |
4424 | * Match against @m, not @backoff -- the PG may | |
4425 | * have split on the OSD. | |
4426 | */ | |
4427 | if (target_contained_by(&req->r_t, m->begin, m->end)) { | |
4428 | /* | |
4429 | * If no other installed backoff applies, | |
4430 | * resend. | |
4431 | */ | |
4432 | send_request(req); | |
4433 | } | |
4434 | } | |
4435 | } | |
4436 | } | |
4437 | ||
4438 | static void handle_backoff(struct ceph_osd *osd, struct ceph_msg *msg) | |
4439 | { | |
4440 | struct ceph_osd_client *osdc = osd->o_osdc; | |
4441 | struct MOSDBackoff m; | |
4442 | int ret; | |
4443 | ||
4444 | down_read(&osdc->lock); | |
4445 | if (!osd_registered(osd)) { | |
4446 | dout("%s osd%d unknown\n", __func__, osd->o_osd); | |
4447 | up_read(&osdc->lock); | |
4448 | return; | |
4449 | } | |
4450 | WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); | |
4451 | ||
4452 | mutex_lock(&osd->lock); | |
4453 | ret = decode_MOSDBackoff(msg, &m); | |
4454 | if (ret) { | |
4455 | pr_err("failed to decode MOSDBackoff: %d\n", ret); | |
4456 | ceph_msg_dump(msg); | |
4457 | goto out_unlock; | |
4458 | } | |
4459 | ||
4460 | switch (m.op) { | |
4461 | case CEPH_OSD_BACKOFF_OP_BLOCK: | |
4462 | handle_backoff_block(osd, &m); | |
4463 | break; | |
4464 | case CEPH_OSD_BACKOFF_OP_UNBLOCK: | |
4465 | handle_backoff_unblock(osd, &m); | |
4466 | break; | |
4467 | default: | |
4468 | pr_err("%s osd%d unknown op %d\n", __func__, osd->o_osd, m.op); | |
4469 | } | |
4470 | ||
4471 | free_hoid(m.begin); | |
4472 | free_hoid(m.end); | |
4473 | ||
4474 | out_unlock: | |
4475 | mutex_unlock(&osd->lock); | |
4476 | up_read(&osdc->lock); | |
4477 | } | |
4478 | ||
a40c4f10 YS |
4479 | /* |
4480 | * Process osd watch notifications | |
4481 | */ | |
3c663bbd AE |
4482 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
4483 | struct ceph_msg *msg) | |
a40c4f10 | 4484 | { |
922dab61 ID |
4485 | void *p = msg->front.iov_base; |
4486 | void *const end = p + msg->front.iov_len; | |
4487 | struct ceph_osd_linger_request *lreq; | |
4488 | struct linger_work *lwork; | |
4489 | u8 proto_ver, opcode; | |
4490 | u64 cookie, notify_id; | |
4491 | u64 notifier_id = 0; | |
19079203 | 4492 | s32 return_code = 0; |
922dab61 ID |
4493 | void *payload = NULL; |
4494 | u32 payload_len = 0; | |
a40c4f10 YS |
4495 | |
4496 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
4497 | ceph_decode_8_safe(&p, end, opcode, bad); | |
4498 | ceph_decode_64_safe(&p, end, cookie, bad); | |
922dab61 | 4499 | p += 8; /* skip ver */ |
a40c4f10 YS |
4500 | ceph_decode_64_safe(&p, end, notify_id, bad); |
4501 | ||
922dab61 ID |
4502 | if (proto_ver >= 1) { |
4503 | ceph_decode_32_safe(&p, end, payload_len, bad); | |
4504 | ceph_decode_need(&p, end, payload_len, bad); | |
4505 | payload = p; | |
4506 | p += payload_len; | |
4507 | } | |
4508 | ||
4509 | if (le16_to_cpu(msg->hdr.version) >= 2) | |
19079203 | 4510 | ceph_decode_32_safe(&p, end, return_code, bad); |
922dab61 ID |
4511 | |
4512 | if (le16_to_cpu(msg->hdr.version) >= 3) | |
4513 | ceph_decode_64_safe(&p, end, notifier_id, bad); | |
4514 | ||
4515 | down_read(&osdc->lock); | |
4516 | lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); | |
4517 | if (!lreq) { | |
4518 | dout("%s opcode %d cookie %llu dne\n", __func__, opcode, | |
4519 | cookie); | |
4520 | goto out_unlock_osdc; | |
4521 | } | |
4522 | ||
4523 | mutex_lock(&lreq->lock); | |
19079203 ID |
4524 | dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, |
4525 | opcode, cookie, lreq, lreq->is_watch); | |
922dab61 ID |
4526 | if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { |
4527 | if (!lreq->last_error) { | |
4528 | lreq->last_error = -ENOTCONN; | |
4529 | queue_watch_error(lreq); | |
4530 | } | |
19079203 ID |
4531 | } else if (!lreq->is_watch) { |
4532 | /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ | |
4533 | if (lreq->notify_id && lreq->notify_id != notify_id) { | |
4534 | dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, | |
4535 | lreq->notify_id, notify_id); | |
4536 | } else if (!completion_done(&lreq->notify_finish_wait)) { | |
4537 | struct ceph_msg_data *data = | |
0d9c1ab3 | 4538 | msg->num_data_items ? &msg->data[0] : NULL; |
19079203 ID |
4539 | |
4540 | if (data) { | |
4541 | if (lreq->preply_pages) { | |
4542 | WARN_ON(data->type != | |
4543 | CEPH_MSG_DATA_PAGES); | |
4544 | *lreq->preply_pages = data->pages; | |
4545 | *lreq->preply_len = data->length; | |
e8862740 | 4546 | data->own_pages = false; |
19079203 ID |
4547 | } |
4548 | } | |
4549 | lreq->notify_finish_error = return_code; | |
4550 | complete_all(&lreq->notify_finish_wait); | |
4551 | } | |
922dab61 ID |
4552 | } else { |
4553 | /* CEPH_WATCH_EVENT_NOTIFY */ | |
4554 | lwork = lwork_alloc(lreq, do_watch_notify); | |
4555 | if (!lwork) { | |
4556 | pr_err("failed to allocate notify-lwork\n"); | |
4557 | goto out_unlock_lreq; | |
a40c4f10 | 4558 | } |
a40c4f10 | 4559 | |
922dab61 ID |
4560 | lwork->notify.notify_id = notify_id; |
4561 | lwork->notify.notifier_id = notifier_id; | |
4562 | lwork->notify.payload = payload; | |
4563 | lwork->notify.payload_len = payload_len; | |
4564 | lwork->notify.msg = ceph_msg_get(msg); | |
4565 | lwork_queue(lwork); | |
91883cd2 | 4566 | } |
a40c4f10 | 4567 | |
922dab61 ID |
4568 | out_unlock_lreq: |
4569 | mutex_unlock(&lreq->lock); | |
4570 | out_unlock_osdc: | |
4571 | up_read(&osdc->lock); | |
a40c4f10 YS |
4572 | return; |
4573 | ||
4574 | bad: | |
4575 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
a40c4f10 YS |
4576 | } |
4577 | ||
70636773 AE |
4578 | /* |
4579 | * Register request, send initial attempt. | |
4580 | */ | |
a8af0d68 JL |
4581 | void ceph_osdc_start_request(struct ceph_osd_client *osdc, |
4582 | struct ceph_osd_request *req) | |
70636773 | 4583 | { |
5aea3dcd ID |
4584 | down_read(&osdc->lock); |
4585 | submit_request(req, false); | |
4586 | up_read(&osdc->lock); | |
f24e9980 | 4587 | } |
3d14c5d2 | 4588 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 | 4589 | |
c9f9b93d | 4590 | /* |
d0bb883c ID |
4591 | * Unregister request. If @req was registered, it isn't completed: |
4592 | * r_result isn't set and __complete_request() isn't invoked. | |
4593 | * | |
4594 | * If @req wasn't registered, this call may have raced with | |
4595 | * handle_reply(), in which case r_result would already be set and | |
4596 | * __complete_request() would be getting invoked, possibly even | |
4597 | * concurrently with this call. | |
c9f9b93d ID |
4598 | */ |
4599 | void ceph_osdc_cancel_request(struct ceph_osd_request *req) | |
4600 | { | |
4601 | struct ceph_osd_client *osdc = req->r_osdc; | |
4602 | ||
5aea3dcd | 4603 | down_write(&osdc->lock); |
5aea3dcd ID |
4604 | if (req->r_osd) |
4605 | cancel_request(req); | |
4606 | up_write(&osdc->lock); | |
c9f9b93d ID |
4607 | } |
4608 | EXPORT_SYMBOL(ceph_osdc_cancel_request); | |
4609 | ||
f24e9980 | 4610 | /* |
42b06965 | 4611 | * @timeout: in jiffies, 0 means "wait forever" |
f24e9980 | 4612 | */ |
42b06965 ID |
4613 | static int wait_request_timeout(struct ceph_osd_request *req, |
4614 | unsigned long timeout) | |
f24e9980 | 4615 | { |
42b06965 | 4616 | long left; |
c9f9b93d | 4617 | |
42b06965 | 4618 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); |
0e76abf2 | 4619 | left = wait_for_completion_killable_timeout(&req->r_completion, |
42b06965 ID |
4620 | ceph_timeout_jiffies(timeout)); |
4621 | if (left <= 0) { | |
4622 | left = left ?: -ETIMEDOUT; | |
c9f9b93d | 4623 | ceph_osdc_cancel_request(req); |
42b06965 ID |
4624 | } else { |
4625 | left = req->r_result; /* completed */ | |
f24e9980 SW |
4626 | } |
4627 | ||
42b06965 ID |
4628 | return left; |
4629 | } | |
4630 | ||
4631 | /* | |
4632 | * wait for a request to complete | |
4633 | */ | |
4634 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
4635 | struct ceph_osd_request *req) | |
4636 | { | |
4637 | return wait_request_timeout(req, 0); | |
f24e9980 | 4638 | } |
3d14c5d2 | 4639 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
4640 | |
4641 | /* | |
4642 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
4643 | */ | |
4644 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
4645 | { | |
5aea3dcd ID |
4646 | struct rb_node *n, *p; |
4647 | u64 last_tid = atomic64_read(&osdc->last_tid); | |
f24e9980 | 4648 | |
5aea3dcd ID |
4649 | again: |
4650 | down_read(&osdc->lock); | |
4651 | for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { | |
4652 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
4653 | ||
4654 | mutex_lock(&osd->lock); | |
4655 | for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { | |
4656 | struct ceph_osd_request *req = | |
4657 | rb_entry(p, struct ceph_osd_request, r_node); | |
4658 | ||
4659 | if (req->r_tid > last_tid) | |
4660 | break; | |
4661 | ||
4662 | if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) | |
4663 | continue; | |
f24e9980 | 4664 | |
5aea3dcd ID |
4665 | ceph_osdc_get_request(req); |
4666 | mutex_unlock(&osd->lock); | |
4667 | up_read(&osdc->lock); | |
4668 | dout("%s waiting on req %p tid %llu last_tid %llu\n", | |
4669 | __func__, req, req->r_tid, last_tid); | |
b18b9550 | 4670 | wait_for_completion(&req->r_completion); |
5aea3dcd ID |
4671 | ceph_osdc_put_request(req); |
4672 | goto again; | |
4673 | } | |
f24e9980 | 4674 | |
5aea3dcd | 4675 | mutex_unlock(&osd->lock); |
f24e9980 | 4676 | } |
5aea3dcd ID |
4677 | |
4678 | up_read(&osdc->lock); | |
4679 | dout("%s done last_tid %llu\n", __func__, last_tid); | |
f24e9980 | 4680 | } |
3d14c5d2 | 4681 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 | 4682 | |
922dab61 ID |
4683 | /* |
4684 | * Returns a handle, caller owns a ref. | |
4685 | */ | |
4686 | struct ceph_osd_linger_request * | |
4687 | ceph_osdc_watch(struct ceph_osd_client *osdc, | |
4688 | struct ceph_object_id *oid, | |
4689 | struct ceph_object_locator *oloc, | |
4690 | rados_watchcb2_t wcb, | |
4691 | rados_watcherrcb_t errcb, | |
4692 | void *data) | |
4693 | { | |
4694 | struct ceph_osd_linger_request *lreq; | |
4695 | int ret; | |
4696 | ||
4697 | lreq = linger_alloc(osdc); | |
4698 | if (!lreq) | |
4699 | return ERR_PTR(-ENOMEM); | |
4700 | ||
19079203 | 4701 | lreq->is_watch = true; |
922dab61 ID |
4702 | lreq->wcb = wcb; |
4703 | lreq->errcb = errcb; | |
4704 | lreq->data = data; | |
b07d3c4b | 4705 | lreq->watch_valid_thru = jiffies; |
922dab61 ID |
4706 | |
4707 | ceph_oid_copy(&lreq->t.base_oid, oid); | |
4708 | ceph_oloc_copy(&lreq->t.base_oloc, oloc); | |
54ea0046 | 4709 | lreq->t.flags = CEPH_OSD_FLAG_WRITE; |
fac02ddf | 4710 | ktime_get_real_ts64(&lreq->mtime); |
922dab61 | 4711 | |
81c65213 | 4712 | linger_submit(lreq); |
922dab61 ID |
4713 | ret = linger_reg_commit_wait(lreq); |
4714 | if (ret) { | |
4715 | linger_cancel(lreq); | |
4716 | goto err_put_lreq; | |
4717 | } | |
4718 | ||
4719 | return lreq; | |
4720 | ||
4721 | err_put_lreq: | |
4722 | linger_put(lreq); | |
4723 | return ERR_PTR(ret); | |
4724 | } | |
4725 | EXPORT_SYMBOL(ceph_osdc_watch); | |
4726 | ||
4727 | /* | |
4728 | * Releases a ref. | |
4729 | * | |
4730 | * Times out after mount_timeout to preserve rbd unmap behaviour | |
4731 | * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap | |
4732 | * with mount_timeout"). | |
4733 | */ | |
4734 | int ceph_osdc_unwatch(struct ceph_osd_client *osdc, | |
4735 | struct ceph_osd_linger_request *lreq) | |
4736 | { | |
4737 | struct ceph_options *opts = osdc->client->options; | |
4738 | struct ceph_osd_request *req; | |
4739 | int ret; | |
4740 | ||
4741 | req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); | |
4742 | if (!req) | |
4743 | return -ENOMEM; | |
4744 | ||
4745 | ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); | |
4746 | ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); | |
54ea0046 | 4747 | req->r_flags = CEPH_OSD_FLAG_WRITE; |
fac02ddf | 4748 | ktime_get_real_ts64(&req->r_mtime); |
75dbb685 ID |
4749 | osd_req_op_watch_init(req, 0, CEPH_OSD_WATCH_OP_UNWATCH, |
4750 | lreq->linger_id, 0); | |
922dab61 ID |
4751 | |
4752 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); | |
4753 | if (ret) | |
4754 | goto out_put_req; | |
4755 | ||
a8af0d68 | 4756 | ceph_osdc_start_request(osdc, req); |
922dab61 ID |
4757 | linger_cancel(lreq); |
4758 | linger_put(lreq); | |
4759 | ret = wait_request_timeout(req, opts->mount_timeout); | |
4760 | ||
4761 | out_put_req: | |
4762 | ceph_osdc_put_request(req); | |
4763 | return ret; | |
4764 | } | |
4765 | EXPORT_SYMBOL(ceph_osdc_unwatch); | |
4766 | ||
4767 | static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, | |
4768 | u64 notify_id, u64 cookie, void *payload, | |
6d54228f | 4769 | u32 payload_len) |
922dab61 ID |
4770 | { |
4771 | struct ceph_osd_req_op *op; | |
4772 | struct ceph_pagelist *pl; | |
4773 | int ret; | |
4774 | ||
042f6498 | 4775 | op = osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); |
922dab61 | 4776 | |
33165d47 | 4777 | pl = ceph_pagelist_alloc(GFP_NOIO); |
922dab61 ID |
4778 | if (!pl) |
4779 | return -ENOMEM; | |
4780 | ||
922dab61 ID |
4781 | ret = ceph_pagelist_encode_64(pl, notify_id); |
4782 | ret |= ceph_pagelist_encode_64(pl, cookie); | |
4783 | if (payload) { | |
4784 | ret |= ceph_pagelist_encode_32(pl, payload_len); | |
4785 | ret |= ceph_pagelist_append(pl, payload, payload_len); | |
4786 | } else { | |
4787 | ret |= ceph_pagelist_encode_32(pl, 0); | |
4788 | } | |
4789 | if (ret) { | |
4790 | ceph_pagelist_release(pl); | |
4791 | return -ENOMEM; | |
4792 | } | |
4793 | ||
4794 | ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); | |
4795 | op->indata_len = pl->length; | |
4796 | return 0; | |
4797 | } | |
4798 | ||
4799 | int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, | |
4800 | struct ceph_object_id *oid, | |
4801 | struct ceph_object_locator *oloc, | |
4802 | u64 notify_id, | |
4803 | u64 cookie, | |
4804 | void *payload, | |
6d54228f | 4805 | u32 payload_len) |
922dab61 ID |
4806 | { |
4807 | struct ceph_osd_request *req; | |
4808 | int ret; | |
4809 | ||
4810 | req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); | |
4811 | if (!req) | |
4812 | return -ENOMEM; | |
4813 | ||
4814 | ceph_oid_copy(&req->r_base_oid, oid); | |
4815 | ceph_oloc_copy(&req->r_base_oloc, oloc); | |
4816 | req->r_flags = CEPH_OSD_FLAG_READ; | |
4817 | ||
26f887e0 ID |
4818 | ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, |
4819 | payload_len); | |
922dab61 ID |
4820 | if (ret) |
4821 | goto out_put_req; | |
4822 | ||
26f887e0 | 4823 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); |
922dab61 ID |
4824 | if (ret) |
4825 | goto out_put_req; | |
4826 | ||
a8af0d68 | 4827 | ceph_osdc_start_request(osdc, req); |
922dab61 ID |
4828 | ret = ceph_osdc_wait_request(osdc, req); |
4829 | ||
4830 | out_put_req: | |
4831 | ceph_osdc_put_request(req); | |
4832 | return ret; | |
4833 | } | |
4834 | EXPORT_SYMBOL(ceph_osdc_notify_ack); | |
4835 | ||
19079203 ID |
4836 | /* |
4837 | * @timeout: in seconds | |
4838 | * | |
4839 | * @preply_{pages,len} are initialized both on success and error. | |
4840 | * The caller is responsible for: | |
4841 | * | |
4842 | * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) | |
4843 | */ | |
4844 | int ceph_osdc_notify(struct ceph_osd_client *osdc, | |
4845 | struct ceph_object_id *oid, | |
4846 | struct ceph_object_locator *oloc, | |
4847 | void *payload, | |
6d54228f | 4848 | u32 payload_len, |
19079203 ID |
4849 | u32 timeout, |
4850 | struct page ***preply_pages, | |
4851 | size_t *preply_len) | |
4852 | { | |
4853 | struct ceph_osd_linger_request *lreq; | |
19079203 ID |
4854 | int ret; |
4855 | ||
4856 | WARN_ON(!timeout); | |
4857 | if (preply_pages) { | |
4858 | *preply_pages = NULL; | |
4859 | *preply_len = 0; | |
4860 | } | |
4861 | ||
4862 | lreq = linger_alloc(osdc); | |
4863 | if (!lreq) | |
4864 | return -ENOMEM; | |
4865 | ||
75dbb685 ID |
4866 | lreq->request_pl = ceph_pagelist_alloc(GFP_NOIO); |
4867 | if (!lreq->request_pl) { | |
19079203 ID |
4868 | ret = -ENOMEM; |
4869 | goto out_put_lreq; | |
4870 | } | |
4871 | ||
75dbb685 ID |
4872 | ret = ceph_pagelist_encode_32(lreq->request_pl, 1); /* prot_ver */ |
4873 | ret |= ceph_pagelist_encode_32(lreq->request_pl, timeout); | |
4874 | ret |= ceph_pagelist_encode_32(lreq->request_pl, payload_len); | |
4875 | ret |= ceph_pagelist_append(lreq->request_pl, payload, payload_len); | |
4876 | if (ret) { | |
4877 | ret = -ENOMEM; | |
81c65213 | 4878 | goto out_put_lreq; |
75dbb685 | 4879 | } |
81c65213 | 4880 | |
19079203 | 4881 | /* for notify_id */ |
75dbb685 ID |
4882 | lreq->notify_id_pages = ceph_alloc_page_vector(1, GFP_NOIO); |
4883 | if (IS_ERR(lreq->notify_id_pages)) { | |
4884 | ret = PTR_ERR(lreq->notify_id_pages); | |
4885 | lreq->notify_id_pages = NULL; | |
19079203 ID |
4886 | goto out_put_lreq; |
4887 | } | |
19079203 | 4888 | |
75dbb685 ID |
4889 | lreq->preply_pages = preply_pages; |
4890 | lreq->preply_len = preply_len; | |
4891 | ||
4892 | ceph_oid_copy(&lreq->t.base_oid, oid); | |
4893 | ceph_oloc_copy(&lreq->t.base_oloc, oloc); | |
4894 | lreq->t.flags = CEPH_OSD_FLAG_READ; | |
26f887e0 | 4895 | |
81c65213 | 4896 | linger_submit(lreq); |
19079203 ID |
4897 | ret = linger_reg_commit_wait(lreq); |
4898 | if (!ret) | |
4899 | ret = linger_notify_finish_wait(lreq); | |
4900 | else | |
4901 | dout("lreq %p failed to initiate notify %d\n", lreq, ret); | |
4902 | ||
4903 | linger_cancel(lreq); | |
4904 | out_put_lreq: | |
4905 | linger_put(lreq); | |
4906 | return ret; | |
4907 | } | |
4908 | EXPORT_SYMBOL(ceph_osdc_notify); | |
4909 | ||
b07d3c4b ID |
4910 | /* |
4911 | * Return the number of milliseconds since the watch was last | |
4912 | * confirmed, or an error. If there is an error, the watch is no | |
4913 | * longer valid, and should be destroyed with ceph_osdc_unwatch(). | |
4914 | */ | |
4915 | int ceph_osdc_watch_check(struct ceph_osd_client *osdc, | |
4916 | struct ceph_osd_linger_request *lreq) | |
4917 | { | |
4918 | unsigned long stamp, age; | |
4919 | int ret; | |
4920 | ||
4921 | down_read(&osdc->lock); | |
4922 | mutex_lock(&lreq->lock); | |
4923 | stamp = lreq->watch_valid_thru; | |
4924 | if (!list_empty(&lreq->pending_lworks)) { | |
4925 | struct linger_work *lwork = | |
4926 | list_first_entry(&lreq->pending_lworks, | |
4927 | struct linger_work, | |
4928 | pending_item); | |
4929 | ||
4930 | if (time_before(lwork->queued_stamp, stamp)) | |
4931 | stamp = lwork->queued_stamp; | |
4932 | } | |
4933 | age = jiffies - stamp; | |
4934 | dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, | |
4935 | lreq, lreq->linger_id, age, lreq->last_error); | |
4936 | /* we are truncating to msecs, so return a safe upper bound */ | |
4937 | ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); | |
4938 | ||
4939 | mutex_unlock(&lreq->lock); | |
4940 | up_read(&osdc->lock); | |
4941 | return ret; | |
4942 | } | |
4943 | ||
a4ed38d7 DF |
4944 | static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) |
4945 | { | |
4946 | u8 struct_v; | |
4947 | u32 struct_len; | |
4948 | int ret; | |
4949 | ||
4950 | ret = ceph_start_decoding(p, end, 2, "watch_item_t", | |
4951 | &struct_v, &struct_len); | |
4952 | if (ret) | |
51fc7ab4 JL |
4953 | goto bad; |
4954 | ||
4955 | ret = -EINVAL; | |
4956 | ceph_decode_copy_safe(p, end, &item->name, sizeof(item->name), bad); | |
4957 | ceph_decode_64_safe(p, end, item->cookie, bad); | |
4958 | ceph_decode_skip_32(p, end, bad); /* skip timeout seconds */ | |
a4ed38d7 | 4959 | |
a4ed38d7 | 4960 | if (struct_v >= 2) { |
51fc7ab4 JL |
4961 | ret = ceph_decode_entity_addr(p, end, &item->addr); |
4962 | if (ret) | |
4963 | goto bad; | |
4964 | } else { | |
4965 | ret = 0; | |
a4ed38d7 DF |
4966 | } |
4967 | ||
4968 | dout("%s %s%llu cookie %llu addr %s\n", __func__, | |
4969 | ENTITY_NAME(item->name), item->cookie, | |
b726ec97 | 4970 | ceph_pr_addr(&item->addr)); |
51fc7ab4 JL |
4971 | bad: |
4972 | return ret; | |
a4ed38d7 DF |
4973 | } |
4974 | ||
4975 | static int decode_watchers(void **p, void *end, | |
4976 | struct ceph_watch_item **watchers, | |
4977 | u32 *num_watchers) | |
4978 | { | |
4979 | u8 struct_v; | |
4980 | u32 struct_len; | |
4981 | int i; | |
4982 | int ret; | |
4983 | ||
4984 | ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t", | |
4985 | &struct_v, &struct_len); | |
4986 | if (ret) | |
4987 | return ret; | |
4988 | ||
4989 | *num_watchers = ceph_decode_32(p); | |
4990 | *watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO); | |
4991 | if (!*watchers) | |
4992 | return -ENOMEM; | |
4993 | ||
4994 | for (i = 0; i < *num_watchers; i++) { | |
4995 | ret = decode_watcher(p, end, *watchers + i); | |
4996 | if (ret) { | |
4997 | kfree(*watchers); | |
4998 | return ret; | |
4999 | } | |
5000 | } | |
5001 | ||
5002 | return 0; | |
5003 | } | |
5004 | ||
5005 | /* | |
5006 | * On success, the caller is responsible for: | |
5007 | * | |
5008 | * kfree(watchers); | |
5009 | */ | |
5010 | int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, | |
5011 | struct ceph_object_id *oid, | |
5012 | struct ceph_object_locator *oloc, | |
5013 | struct ceph_watch_item **watchers, | |
5014 | u32 *num_watchers) | |
5015 | { | |
5016 | struct ceph_osd_request *req; | |
5017 | struct page **pages; | |
5018 | int ret; | |
5019 | ||
5020 | req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); | |
5021 | if (!req) | |
5022 | return -ENOMEM; | |
5023 | ||
5024 | ceph_oid_copy(&req->r_base_oid, oid); | |
5025 | ceph_oloc_copy(&req->r_base_oloc, oloc); | |
5026 | req->r_flags = CEPH_OSD_FLAG_READ; | |
5027 | ||
a4ed38d7 DF |
5028 | pages = ceph_alloc_page_vector(1, GFP_NOIO); |
5029 | if (IS_ERR(pages)) { | |
5030 | ret = PTR_ERR(pages); | |
5031 | goto out_put_req; | |
5032 | } | |
5033 | ||
5034 | osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0); | |
5035 | ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers, | |
5036 | response_data), | |
5037 | pages, PAGE_SIZE, 0, false, true); | |
5038 | ||
26f887e0 ID |
5039 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); |
5040 | if (ret) | |
5041 | goto out_put_req; | |
5042 | ||
a8af0d68 | 5043 | ceph_osdc_start_request(osdc, req); |
a4ed38d7 DF |
5044 | ret = ceph_osdc_wait_request(osdc, req); |
5045 | if (ret >= 0) { | |
5046 | void *p = page_address(pages[0]); | |
5047 | void *const end = p + req->r_ops[0].outdata_len; | |
5048 | ||
5049 | ret = decode_watchers(&p, end, watchers, num_watchers); | |
5050 | } | |
5051 | ||
5052 | out_put_req: | |
5053 | ceph_osdc_put_request(req); | |
5054 | return ret; | |
5055 | } | |
5056 | EXPORT_SYMBOL(ceph_osdc_list_watchers); | |
5057 | ||
dd935f44 JD |
5058 | /* |
5059 | * Call all pending notify callbacks - for use after a watch is | |
5060 | * unregistered, to make sure no more callbacks for it will be invoked | |
5061 | */ | |
f6479449 | 5062 | void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) |
dd935f44 | 5063 | { |
99d16943 | 5064 | dout("%s osdc %p\n", __func__, osdc); |
dd935f44 JD |
5065 | flush_workqueue(osdc->notify_wq); |
5066 | } | |
5067 | EXPORT_SYMBOL(ceph_osdc_flush_notifies); | |
5068 | ||
7cca78c9 ID |
5069 | void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) |
5070 | { | |
5071 | down_read(&osdc->lock); | |
5072 | maybe_request_map(osdc); | |
5073 | up_read(&osdc->lock); | |
5074 | } | |
5075 | EXPORT_SYMBOL(ceph_osdc_maybe_request_map); | |
dd935f44 | 5076 | |
428a7158 DF |
5077 | /* |
5078 | * Execute an OSD class method on an object. | |
5079 | * | |
5080 | * @flags: CEPH_OSD_FLAG_* | |
2544a020 | 5081 | * @resp_len: in/out param for reply length |
428a7158 DF |
5082 | */ |
5083 | int ceph_osdc_call(struct ceph_osd_client *osdc, | |
5084 | struct ceph_object_id *oid, | |
5085 | struct ceph_object_locator *oloc, | |
5086 | const char *class, const char *method, | |
5087 | unsigned int flags, | |
5088 | struct page *req_page, size_t req_len, | |
68ada915 | 5089 | struct page **resp_pages, size_t *resp_len) |
428a7158 DF |
5090 | { |
5091 | struct ceph_osd_request *req; | |
5092 | int ret; | |
5093 | ||
68ada915 | 5094 | if (req_len > PAGE_SIZE) |
2544a020 ID |
5095 | return -E2BIG; |
5096 | ||
428a7158 DF |
5097 | req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); |
5098 | if (!req) | |
5099 | return -ENOMEM; | |
5100 | ||
5101 | ceph_oid_copy(&req->r_base_oid, oid); | |
5102 | ceph_oloc_copy(&req->r_base_oloc, oloc); | |
5103 | req->r_flags = flags; | |
5104 | ||
24639ce5 | 5105 | ret = osd_req_op_cls_init(req, 0, class, method); |
fe943d50 CX |
5106 | if (ret) |
5107 | goto out_put_req; | |
5108 | ||
428a7158 DF |
5109 | if (req_page) |
5110 | osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len, | |
5111 | 0, false, false); | |
68ada915 ID |
5112 | if (resp_pages) |
5113 | osd_req_op_cls_response_data_pages(req, 0, resp_pages, | |
2544a020 | 5114 | *resp_len, 0, false, false); |
428a7158 | 5115 | |
26f887e0 ID |
5116 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); |
5117 | if (ret) | |
5118 | goto out_put_req; | |
5119 | ||
a8af0d68 | 5120 | ceph_osdc_start_request(osdc, req); |
428a7158 DF |
5121 | ret = ceph_osdc_wait_request(osdc, req); |
5122 | if (ret >= 0) { | |
5123 | ret = req->r_ops[0].rval; | |
68ada915 | 5124 | if (resp_pages) |
428a7158 DF |
5125 | *resp_len = req->r_ops[0].outdata_len; |
5126 | } | |
5127 | ||
5128 | out_put_req: | |
5129 | ceph_osdc_put_request(req); | |
5130 | return ret; | |
5131 | } | |
5132 | EXPORT_SYMBOL(ceph_osdc_call); | |
5133 | ||
120a75ea YZ |
5134 | /* |
5135 | * reset all osd connections | |
5136 | */ | |
5137 | void ceph_osdc_reopen_osds(struct ceph_osd_client *osdc) | |
5138 | { | |
5139 | struct rb_node *n; | |
5140 | ||
5141 | down_write(&osdc->lock); | |
5142 | for (n = rb_first(&osdc->osds); n; ) { | |
5143 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
5144 | ||
5145 | n = rb_next(n); | |
5146 | if (!reopen_osd(osd)) | |
5147 | kick_osd_requests(osd); | |
5148 | } | |
5149 | up_write(&osdc->lock); | |
5150 | } | |
5151 | ||
f24e9980 SW |
5152 | /* |
5153 | * init, shutdown | |
5154 | */ | |
5155 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
5156 | { | |
5157 | int err; | |
5158 | ||
5159 | dout("init\n"); | |
5160 | osdc->client = client; | |
5aea3dcd | 5161 | init_rwsem(&osdc->lock); |
f24e9980 | 5162 | osdc->osds = RB_ROOT; |
f5a2041b | 5163 | INIT_LIST_HEAD(&osdc->osd_lru); |
9dd2845c | 5164 | spin_lock_init(&osdc->osd_lru_lock); |
5aea3dcd ID |
5165 | osd_init(&osdc->homeless_osd); |
5166 | osdc->homeless_osd.o_osdc = osdc; | |
5167 | osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; | |
264048af | 5168 | osdc->last_linger_id = CEPH_LINGER_ID_START; |
922dab61 | 5169 | osdc->linger_requests = RB_ROOT; |
4609245e ID |
5170 | osdc->map_checks = RB_ROOT; |
5171 | osdc->linger_map_checks = RB_ROOT; | |
f24e9980 | 5172 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); |
f5a2041b YS |
5173 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
5174 | ||
5f44f142 | 5175 | err = -ENOMEM; |
e5253a7b ID |
5176 | osdc->osdmap = ceph_osdmap_alloc(); |
5177 | if (!osdc->osdmap) | |
5178 | goto out; | |
5179 | ||
9e767adb ID |
5180 | osdc->req_mempool = mempool_create_slab_pool(10, |
5181 | ceph_osd_request_cache); | |
f24e9980 | 5182 | if (!osdc->req_mempool) |
e5253a7b | 5183 | goto out_map; |
f24e9980 | 5184 | |
d50b409f | 5185 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
0d9c1ab3 | 5186 | PAGE_SIZE, CEPH_OSD_SLAB_OPS, 10, "osd_op"); |
f24e9980 | 5187 | if (err < 0) |
5f44f142 | 5188 | goto out_mempool; |
d50b409f | 5189 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
0d9c1ab3 ID |
5190 | PAGE_SIZE, CEPH_OSD_SLAB_OPS, 10, |
5191 | "osd_op_reply"); | |
c16e7869 SW |
5192 | if (err < 0) |
5193 | goto out_msgpool; | |
a40c4f10 | 5194 | |
dbcae088 | 5195 | err = -ENOMEM; |
a40c4f10 | 5196 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); |
dbcae088 | 5197 | if (!osdc->notify_wq) |
c172ec5c ID |
5198 | goto out_msgpool_reply; |
5199 | ||
88bc1922 ID |
5200 | osdc->completion_wq = create_singlethread_workqueue("ceph-completion"); |
5201 | if (!osdc->completion_wq) | |
5202 | goto out_notify_wq; | |
5203 | ||
fbca9635 ID |
5204 | schedule_delayed_work(&osdc->timeout_work, |
5205 | osdc->client->options->osd_keepalive_timeout); | |
b37ee1b9 ID |
5206 | schedule_delayed_work(&osdc->osds_timeout_work, |
5207 | round_jiffies_relative(osdc->client->options->osd_idle_ttl)); | |
5208 | ||
f24e9980 | 5209 | return 0; |
5f44f142 | 5210 | |
88bc1922 ID |
5211 | out_notify_wq: |
5212 | destroy_workqueue(osdc->notify_wq); | |
c172ec5c ID |
5213 | out_msgpool_reply: |
5214 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); | |
c16e7869 SW |
5215 | out_msgpool: |
5216 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
5217 | out_mempool: |
5218 | mempool_destroy(osdc->req_mempool); | |
e5253a7b ID |
5219 | out_map: |
5220 | ceph_osdmap_destroy(osdc->osdmap); | |
5f44f142 SW |
5221 | out: |
5222 | return err; | |
f24e9980 SW |
5223 | } |
5224 | ||
5225 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
5226 | { | |
88bc1922 | 5227 | destroy_workqueue(osdc->completion_wq); |
a40c4f10 | 5228 | destroy_workqueue(osdc->notify_wq); |
f24e9980 | 5229 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 5230 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
42a2c09f | 5231 | |
5aea3dcd | 5232 | down_write(&osdc->lock); |
42a2c09f ID |
5233 | while (!RB_EMPTY_ROOT(&osdc->osds)) { |
5234 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
5235 | struct ceph_osd, o_node); | |
5aea3dcd | 5236 | close_osd(osd); |
42a2c09f | 5237 | } |
5aea3dcd | 5238 | up_write(&osdc->lock); |
02113a0f | 5239 | WARN_ON(refcount_read(&osdc->homeless_osd.o_ref) != 1); |
5aea3dcd ID |
5240 | osd_cleanup(&osdc->homeless_osd); |
5241 | ||
5242 | WARN_ON(!list_empty(&osdc->osd_lru)); | |
922dab61 | 5243 | WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); |
4609245e ID |
5244 | WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); |
5245 | WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); | |
5aea3dcd ID |
5246 | WARN_ON(atomic_read(&osdc->num_requests)); |
5247 | WARN_ON(atomic_read(&osdc->num_homeless)); | |
42a2c09f | 5248 | |
e5253a7b | 5249 | ceph_osdmap_destroy(osdc->osdmap); |
f24e9980 SW |
5250 | mempool_destroy(osdc->req_mempool); |
5251 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 5252 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
5253 | } |
5254 | ||
aca39d9e LH |
5255 | int osd_req_op_copy_from_init(struct ceph_osd_request *req, |
5256 | u64 src_snapid, u64 src_version, | |
5257 | struct ceph_object_id *src_oid, | |
5258 | struct ceph_object_locator *src_oloc, | |
5259 | u32 src_fadvise_flags, | |
5260 | u32 dst_fadvise_flags, | |
5261 | u32 truncate_seq, u64 truncate_size, | |
5262 | u8 copy_from_flags) | |
23ddf9be LH |
5263 | { |
5264 | struct ceph_osd_req_op *op; | |
5265 | struct page **pages; | |
5266 | void *p, *end; | |
5267 | ||
5268 | pages = ceph_alloc_page_vector(1, GFP_KERNEL); | |
5269 | if (IS_ERR(pages)) | |
5270 | return PTR_ERR(pages); | |
5271 | ||
042f6498 JL |
5272 | op = osd_req_op_init(req, 0, CEPH_OSD_OP_COPY_FROM2, |
5273 | dst_fadvise_flags); | |
23ddf9be LH |
5274 | op->copy_from.snapid = src_snapid; |
5275 | op->copy_from.src_version = src_version; | |
5276 | op->copy_from.flags = copy_from_flags; | |
5277 | op->copy_from.src_fadvise_flags = src_fadvise_flags; | |
5278 | ||
5279 | p = page_address(pages[0]); | |
5280 | end = p + PAGE_SIZE; | |
5281 | ceph_encode_string(&p, end, src_oid->name, src_oid->name_len); | |
5282 | encode_oloc(&p, end, src_oloc); | |
78beb0ff LH |
5283 | ceph_encode_32(&p, truncate_seq); |
5284 | ceph_encode_64(&p, truncate_size); | |
23ddf9be LH |
5285 | op->indata_len = PAGE_SIZE - (end - p); |
5286 | ||
5287 | ceph_osd_data_pages_init(&op->copy_from.osd_data, pages, | |
5288 | op->indata_len, 0, false, true); | |
5289 | return 0; | |
5290 | } | |
aca39d9e | 5291 | EXPORT_SYMBOL(osd_req_op_copy_from_init); |
23ddf9be | 5292 | |
57a35dfb | 5293 | int __init ceph_osdc_setup(void) |
5522ae0b | 5294 | { |
3f1af42a ID |
5295 | size_t size = sizeof(struct ceph_osd_request) + |
5296 | CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); | |
5297 | ||
5522ae0b | 5298 | BUG_ON(ceph_osd_request_cache); |
3f1af42a ID |
5299 | ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, |
5300 | 0, 0, NULL); | |
5522ae0b AE |
5301 | |
5302 | return ceph_osd_request_cache ? 0 : -ENOMEM; | |
5303 | } | |
5522ae0b AE |
5304 | |
5305 | void ceph_osdc_cleanup(void) | |
5306 | { | |
5307 | BUG_ON(!ceph_osd_request_cache); | |
5308 | kmem_cache_destroy(ceph_osd_request_cache); | |
5309 | ceph_osd_request_cache = NULL; | |
5310 | } | |
5522ae0b | 5311 | |
f24e9980 SW |
5312 | /* |
5313 | * handle incoming message | |
5314 | */ | |
4972cf60 | 5315 | static void osd_dispatch(struct ceph_connection *con, struct ceph_msg *msg) |
f24e9980 SW |
5316 | { |
5317 | struct ceph_osd *osd = con->private; | |
5aea3dcd | 5318 | struct ceph_osd_client *osdc = osd->o_osdc; |
f24e9980 SW |
5319 | int type = le16_to_cpu(msg->hdr.type); |
5320 | ||
f24e9980 SW |
5321 | switch (type) { |
5322 | case CEPH_MSG_OSD_MAP: | |
5323 | ceph_osdc_handle_map(osdc, msg); | |
5324 | break; | |
5325 | case CEPH_MSG_OSD_OPREPLY: | |
5aea3dcd | 5326 | handle_reply(osd, msg); |
f24e9980 | 5327 | break; |
a02a946d ID |
5328 | case CEPH_MSG_OSD_BACKOFF: |
5329 | handle_backoff(osd, msg); | |
5330 | break; | |
a40c4f10 YS |
5331 | case CEPH_MSG_WATCH_NOTIFY: |
5332 | handle_watch_notify(osdc, msg); | |
5333 | break; | |
f24e9980 SW |
5334 | |
5335 | default: | |
5336 | pr_err("received unknown message type %d %s\n", type, | |
5337 | ceph_msg_type_name(type)); | |
5338 | } | |
5aea3dcd | 5339 | |
f24e9980 SW |
5340 | ceph_msg_put(msg); |
5341 | } | |
5342 | ||
5b3a4db3 | 5343 | /* |
d15f9d69 ID |
5344 | * Lookup and return message for incoming reply. Don't try to do |
5345 | * anything about a larger than preallocated data portion of the | |
5346 | * message at the moment - for now, just skip the message. | |
5b3a4db3 SW |
5347 | */ |
5348 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
5349 | struct ceph_msg_header *hdr, |
5350 | int *skip) | |
f24e9980 SW |
5351 | { |
5352 | struct ceph_osd *osd = con->private; | |
5353 | struct ceph_osd_client *osdc = osd->o_osdc; | |
5aea3dcd | 5354 | struct ceph_msg *m = NULL; |
0547a9b3 | 5355 | struct ceph_osd_request *req; |
3f0a4ac5 | 5356 | int front_len = le32_to_cpu(hdr->front_len); |
5b3a4db3 | 5357 | int data_len = le32_to_cpu(hdr->data_len); |
5aea3dcd | 5358 | u64 tid = le64_to_cpu(hdr->tid); |
f24e9980 | 5359 | |
5aea3dcd ID |
5360 | down_read(&osdc->lock); |
5361 | if (!osd_registered(osd)) { | |
5362 | dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); | |
5363 | *skip = 1; | |
5364 | goto out_unlock_osdc; | |
5365 | } | |
5366 | WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); | |
5367 | ||
5368 | mutex_lock(&osd->lock); | |
5369 | req = lookup_request(&osd->o_requests, tid); | |
0547a9b3 | 5370 | if (!req) { |
cd8140c6 ID |
5371 | dout("%s osd%d tid %llu unknown, skipping\n", __func__, |
5372 | osd->o_osd, tid); | |
d15f9d69 | 5373 | *skip = 1; |
5aea3dcd | 5374 | goto out_unlock_session; |
0547a9b3 | 5375 | } |
c16e7869 | 5376 | |
ace6d3a9 | 5377 | ceph_msg_revoke_incoming(req->r_reply); |
0547a9b3 | 5378 | |
f2be82b0 | 5379 | if (front_len > req->r_reply->front_alloc_len) { |
d15f9d69 ID |
5380 | pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", |
5381 | __func__, osd->o_osd, req->r_tid, front_len, | |
5382 | req->r_reply->front_alloc_len); | |
3f0a4ac5 ID |
5383 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, |
5384 | false); | |
a79832f2 | 5385 | if (!m) |
5aea3dcd | 5386 | goto out_unlock_session; |
c16e7869 SW |
5387 | ceph_msg_put(req->r_reply); |
5388 | req->r_reply = m; | |
5389 | } | |
0fff87ec | 5390 | |
d15f9d69 ID |
5391 | if (data_len > req->r_reply->data_length) { |
5392 | pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", | |
5393 | __func__, osd->o_osd, req->r_tid, data_len, | |
5394 | req->r_reply->data_length); | |
5395 | m = NULL; | |
5396 | *skip = 1; | |
5aea3dcd | 5397 | goto out_unlock_session; |
0547a9b3 | 5398 | } |
d15f9d69 ID |
5399 | |
5400 | m = ceph_msg_get(req->r_reply); | |
c16e7869 | 5401 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 | 5402 | |
5aea3dcd ID |
5403 | out_unlock_session: |
5404 | mutex_unlock(&osd->lock); | |
5405 | out_unlock_osdc: | |
5406 | up_read(&osdc->lock); | |
2450418c | 5407 | return m; |
5b3a4db3 SW |
5408 | } |
5409 | ||
19079203 ID |
5410 | static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) |
5411 | { | |
5412 | struct ceph_msg *m; | |
5413 | int type = le16_to_cpu(hdr->type); | |
5414 | u32 front_len = le32_to_cpu(hdr->front_len); | |
5415 | u32 data_len = le32_to_cpu(hdr->data_len); | |
5416 | ||
0d9c1ab3 | 5417 | m = ceph_msg_new2(type, front_len, 1, GFP_NOIO, false); |
19079203 ID |
5418 | if (!m) |
5419 | return NULL; | |
5420 | ||
5421 | if (data_len) { | |
5422 | struct page **pages; | |
19079203 ID |
5423 | |
5424 | pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), | |
5425 | GFP_NOIO); | |
c22e853a | 5426 | if (IS_ERR(pages)) { |
19079203 ID |
5427 | ceph_msg_put(m); |
5428 | return NULL; | |
5429 | } | |
5430 | ||
e8862740 | 5431 | ceph_msg_data_add_pages(m, pages, data_len, 0, true); |
19079203 ID |
5432 | } |
5433 | ||
5434 | return m; | |
5435 | } | |
5436 | ||
4972cf60 ID |
5437 | static struct ceph_msg *osd_alloc_msg(struct ceph_connection *con, |
5438 | struct ceph_msg_header *hdr, | |
5439 | int *skip) | |
5b3a4db3 SW |
5440 | { |
5441 | struct ceph_osd *osd = con->private; | |
5442 | int type = le16_to_cpu(hdr->type); | |
5b3a4db3 | 5443 | |
1c20f2d2 | 5444 | *skip = 0; |
5b3a4db3 SW |
5445 | switch (type) { |
5446 | case CEPH_MSG_OSD_MAP: | |
a02a946d | 5447 | case CEPH_MSG_OSD_BACKOFF: |
a40c4f10 | 5448 | case CEPH_MSG_WATCH_NOTIFY: |
19079203 | 5449 | return alloc_msg_with_page_vector(hdr); |
5b3a4db3 SW |
5450 | case CEPH_MSG_OSD_OPREPLY: |
5451 | return get_reply(con, hdr, skip); | |
5452 | default: | |
5aea3dcd ID |
5453 | pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, |
5454 | osd->o_osd, type); | |
5b3a4db3 SW |
5455 | *skip = 1; |
5456 | return NULL; | |
5457 | } | |
f24e9980 SW |
5458 | } |
5459 | ||
5460 | /* | |
5461 | * Wrappers to refcount containing ceph_osd struct | |
5462 | */ | |
4972cf60 | 5463 | static struct ceph_connection *osd_get_con(struct ceph_connection *con) |
f24e9980 SW |
5464 | { |
5465 | struct ceph_osd *osd = con->private; | |
5466 | if (get_osd(osd)) | |
5467 | return con; | |
5468 | return NULL; | |
5469 | } | |
5470 | ||
4972cf60 | 5471 | static void osd_put_con(struct ceph_connection *con) |
f24e9980 SW |
5472 | { |
5473 | struct ceph_osd *osd = con->private; | |
5474 | put_osd(osd); | |
5475 | } | |
5476 | ||
4e7a5dcd SW |
5477 | /* |
5478 | * authentication | |
5479 | */ | |
cd1a677c | 5480 | |
a3530df3 AE |
5481 | /* |
5482 | * Note: returned pointer is the address of a structure that's | |
5483 | * managed separately. Caller must *not* attempt to free it. | |
5484 | */ | |
4972cf60 ID |
5485 | static struct ceph_auth_handshake * |
5486 | osd_get_authorizer(struct ceph_connection *con, int *proto, int force_new) | |
4e7a5dcd SW |
5487 | { |
5488 | struct ceph_osd *o = con->private; | |
5489 | struct ceph_osd_client *osdc = o->o_osdc; | |
5490 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 5491 | struct ceph_auth_handshake *auth = &o->o_auth; |
ce287162 | 5492 | int ret; |
4e7a5dcd | 5493 | |
ce287162 ID |
5494 | ret = __ceph_auth_get_authorizer(ac, auth, CEPH_ENTITY_TYPE_OSD, |
5495 | force_new, proto, NULL, NULL); | |
5496 | if (ret) | |
5497 | return ERR_PTR(ret); | |
74f1869f | 5498 | |
a3530df3 | 5499 | return auth; |
4e7a5dcd SW |
5500 | } |
5501 | ||
4972cf60 | 5502 | static int osd_add_authorizer_challenge(struct ceph_connection *con, |
6daca13d ID |
5503 | void *challenge_buf, int challenge_buf_len) |
5504 | { | |
5505 | struct ceph_osd *o = con->private; | |
5506 | struct ceph_osd_client *osdc = o->o_osdc; | |
5507 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
5508 | ||
5509 | return ceph_auth_add_authorizer_challenge(ac, o->o_auth.authorizer, | |
5510 | challenge_buf, challenge_buf_len); | |
5511 | } | |
4e7a5dcd | 5512 | |
4972cf60 | 5513 | static int osd_verify_authorizer_reply(struct ceph_connection *con) |
4e7a5dcd SW |
5514 | { |
5515 | struct ceph_osd *o = con->private; | |
5516 | struct ceph_osd_client *osdc = o->o_osdc; | |
5517 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
285ea34f | 5518 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 5519 | |
285ea34f ID |
5520 | return ceph_auth_verify_authorizer_reply(ac, auth->authorizer, |
5521 | auth->authorizer_reply_buf, auth->authorizer_reply_buf_len, | |
5522 | NULL, NULL, NULL, NULL); | |
4e7a5dcd SW |
5523 | } |
5524 | ||
4972cf60 | 5525 | static int osd_invalidate_authorizer(struct ceph_connection *con) |
9bd2e6f8 SW |
5526 | { |
5527 | struct ceph_osd *o = con->private; | |
5528 | struct ceph_osd_client *osdc = o->o_osdc; | |
5529 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
5530 | ||
27859f97 | 5531 | ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
9bd2e6f8 SW |
5532 | return ceph_monc_validate_auth(&osdc->client->monc); |
5533 | } | |
4e7a5dcd | 5534 | |
cd1a677c ID |
5535 | static int osd_get_auth_request(struct ceph_connection *con, |
5536 | void *buf, int *buf_len, | |
5537 | void **authorizer, int *authorizer_len) | |
5538 | { | |
5539 | struct ceph_osd *o = con->private; | |
5540 | struct ceph_auth_client *ac = o->o_osdc->client->monc.auth; | |
5541 | struct ceph_auth_handshake *auth = &o->o_auth; | |
5542 | int ret; | |
5543 | ||
5544 | ret = ceph_auth_get_authorizer(ac, auth, CEPH_ENTITY_TYPE_OSD, | |
5545 | buf, buf_len); | |
5546 | if (ret) | |
5547 | return ret; | |
5548 | ||
5549 | *authorizer = auth->authorizer_buf; | |
5550 | *authorizer_len = auth->authorizer_buf_len; | |
5551 | return 0; | |
5552 | } | |
5553 | ||
5554 | static int osd_handle_auth_reply_more(struct ceph_connection *con, | |
5555 | void *reply, int reply_len, | |
5556 | void *buf, int *buf_len, | |
5557 | void **authorizer, int *authorizer_len) | |
5558 | { | |
5559 | struct ceph_osd *o = con->private; | |
5560 | struct ceph_auth_client *ac = o->o_osdc->client->monc.auth; | |
5561 | struct ceph_auth_handshake *auth = &o->o_auth; | |
5562 | int ret; | |
5563 | ||
5564 | ret = ceph_auth_handle_svc_reply_more(ac, auth, reply, reply_len, | |
5565 | buf, buf_len); | |
5566 | if (ret) | |
5567 | return ret; | |
5568 | ||
5569 | *authorizer = auth->authorizer_buf; | |
5570 | *authorizer_len = auth->authorizer_buf_len; | |
5571 | return 0; | |
5572 | } | |
5573 | ||
5574 | static int osd_handle_auth_done(struct ceph_connection *con, | |
5575 | u64 global_id, void *reply, int reply_len, | |
5576 | u8 *session_key, int *session_key_len, | |
5577 | u8 *con_secret, int *con_secret_len) | |
5578 | { | |
5579 | struct ceph_osd *o = con->private; | |
5580 | struct ceph_auth_client *ac = o->o_osdc->client->monc.auth; | |
5581 | struct ceph_auth_handshake *auth = &o->o_auth; | |
5582 | ||
5583 | return ceph_auth_handle_svc_reply_done(ac, auth, reply, reply_len, | |
5584 | session_key, session_key_len, | |
5585 | con_secret, con_secret_len); | |
5586 | } | |
5587 | ||
5588 | static int osd_handle_auth_bad_method(struct ceph_connection *con, | |
5589 | int used_proto, int result, | |
5590 | const int *allowed_protos, int proto_cnt, | |
5591 | const int *allowed_modes, int mode_cnt) | |
5592 | { | |
5593 | struct ceph_osd *o = con->private; | |
5594 | struct ceph_mon_client *monc = &o->o_osdc->client->monc; | |
5595 | int ret; | |
5596 | ||
5597 | if (ceph_auth_handle_bad_authorizer(monc->auth, CEPH_ENTITY_TYPE_OSD, | |
5598 | used_proto, result, | |
5599 | allowed_protos, proto_cnt, | |
5600 | allowed_modes, mode_cnt)) { | |
5601 | ret = ceph_monc_validate_auth(monc); | |
5602 | if (ret) | |
5603 | return ret; | |
5604 | } | |
5605 | ||
5606 | return -EACCES; | |
5607 | } | |
5608 | ||
8cb441c0 ID |
5609 | static void osd_reencode_message(struct ceph_msg *msg) |
5610 | { | |
914902af ID |
5611 | int type = le16_to_cpu(msg->hdr.type); |
5612 | ||
5613 | if (type == CEPH_MSG_OSD_OP) | |
5614 | encode_request_finish(msg); | |
8cb441c0 ID |
5615 | } |
5616 | ||
79dbd1ba | 5617 | static int osd_sign_message(struct ceph_msg *msg) |
33d07337 | 5618 | { |
79dbd1ba | 5619 | struct ceph_osd *o = msg->con->private; |
33d07337 | 5620 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 5621 | |
33d07337 YZ |
5622 | return ceph_auth_sign_message(auth, msg); |
5623 | } | |
5624 | ||
79dbd1ba | 5625 | static int osd_check_message_signature(struct ceph_msg *msg) |
33d07337 | 5626 | { |
79dbd1ba | 5627 | struct ceph_osd *o = msg->con->private; |
33d07337 | 5628 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 5629 | |
33d07337 YZ |
5630 | return ceph_auth_check_message_signature(auth, msg); |
5631 | } | |
5632 | ||
9e32789f | 5633 | static const struct ceph_connection_operations osd_con_ops = { |
4972cf60 ID |
5634 | .get = osd_get_con, |
5635 | .put = osd_put_con, | |
5636 | .alloc_msg = osd_alloc_msg, | |
5637 | .dispatch = osd_dispatch, | |
5638 | .fault = osd_fault, | |
8cb441c0 | 5639 | .reencode_message = osd_reencode_message, |
4972cf60 ID |
5640 | .get_authorizer = osd_get_authorizer, |
5641 | .add_authorizer_challenge = osd_add_authorizer_challenge, | |
5642 | .verify_authorizer_reply = osd_verify_authorizer_reply, | |
5643 | .invalidate_authorizer = osd_invalidate_authorizer, | |
79dbd1ba ID |
5644 | .sign_message = osd_sign_message, |
5645 | .check_message_signature = osd_check_message_signature, | |
cd1a677c ID |
5646 | .get_auth_request = osd_get_auth_request, |
5647 | .handle_auth_reply_more = osd_handle_auth_reply_more, | |
5648 | .handle_auth_done = osd_handle_auth_done, | |
5649 | .handle_auth_bad_method = osd_handle_auth_bad_method, | |
f24e9980 | 5650 | }; |