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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 | ||
a4ce40a9 | 129 | static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
130 | struct page **pages, u64 length, u32 alignment, |
131 | bool pages_from_pool, bool own_pages) | |
132 | { | |
133 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; | |
134 | osd_data->pages = pages; | |
135 | osd_data->length = length; | |
136 | osd_data->alignment = alignment; | |
137 | osd_data->pages_from_pool = pages_from_pool; | |
138 | osd_data->own_pages = own_pages; | |
139 | } | |
43bfe5de | 140 | |
a4ce40a9 | 141 | static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
142 | struct ceph_pagelist *pagelist) |
143 | { | |
144 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; | |
145 | osd_data->pagelist = pagelist; | |
146 | } | |
43bfe5de AE |
147 | |
148 | #ifdef CONFIG_BLOCK | |
a4ce40a9 | 149 | static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, |
5359a17d ID |
150 | struct ceph_bio_iter *bio_pos, |
151 | u32 bio_length) | |
43bfe5de AE |
152 | { |
153 | osd_data->type = CEPH_OSD_DATA_TYPE_BIO; | |
5359a17d | 154 | osd_data->bio_pos = *bio_pos; |
43bfe5de AE |
155 | osd_data->bio_length = bio_length; |
156 | } | |
43bfe5de AE |
157 | #endif /* CONFIG_BLOCK */ |
158 | ||
b9e281c2 | 159 | static void ceph_osd_data_bvecs_init(struct ceph_osd_data *osd_data, |
0010f705 ID |
160 | struct ceph_bvec_iter *bvec_pos, |
161 | u32 num_bvecs) | |
b9e281c2 ID |
162 | { |
163 | osd_data->type = CEPH_OSD_DATA_TYPE_BVECS; | |
164 | osd_data->bvec_pos = *bvec_pos; | |
0010f705 | 165 | osd_data->num_bvecs = num_bvecs; |
b9e281c2 ID |
166 | } |
167 | ||
8a703a38 IC |
168 | #define osd_req_op_data(oreq, whch, typ, fld) \ |
169 | ({ \ | |
170 | struct ceph_osd_request *__oreq = (oreq); \ | |
171 | unsigned int __whch = (whch); \ | |
172 | BUG_ON(__whch >= __oreq->r_num_ops); \ | |
173 | &__oreq->r_ops[__whch].typ.fld; \ | |
174 | }) | |
863c7eb5 | 175 | |
49719778 AE |
176 | static struct ceph_osd_data * |
177 | osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) | |
178 | { | |
179 | BUG_ON(which >= osd_req->r_num_ops); | |
180 | ||
181 | return &osd_req->r_ops[which].raw_data_in; | |
182 | } | |
183 | ||
a4ce40a9 AE |
184 | struct ceph_osd_data * |
185 | osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, | |
406e2c9f | 186 | unsigned int which) |
a4ce40a9 | 187 | { |
863c7eb5 | 188 | return osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
189 | } |
190 | EXPORT_SYMBOL(osd_req_op_extent_osd_data); | |
191 | ||
49719778 AE |
192 | void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, |
193 | unsigned int which, struct page **pages, | |
194 | u64 length, u32 alignment, | |
195 | bool pages_from_pool, bool own_pages) | |
196 | { | |
197 | struct ceph_osd_data *osd_data; | |
198 | ||
199 | osd_data = osd_req_op_raw_data_in(osd_req, which); | |
200 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
201 | pages_from_pool, own_pages); | |
202 | } | |
203 | EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); | |
204 | ||
a4ce40a9 | 205 | void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, |
406e2c9f AE |
206 | unsigned int which, struct page **pages, |
207 | u64 length, u32 alignment, | |
a4ce40a9 AE |
208 | bool pages_from_pool, bool own_pages) |
209 | { | |
210 | struct ceph_osd_data *osd_data; | |
211 | ||
863c7eb5 | 212 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
213 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
214 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
215 | } |
216 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); | |
217 | ||
218 | void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, | |
406e2c9f | 219 | unsigned int which, struct ceph_pagelist *pagelist) |
a4ce40a9 AE |
220 | { |
221 | struct ceph_osd_data *osd_data; | |
222 | ||
863c7eb5 | 223 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 | 224 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
225 | } |
226 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); | |
227 | ||
228 | #ifdef CONFIG_BLOCK | |
229 | void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, | |
5359a17d ID |
230 | unsigned int which, |
231 | struct ceph_bio_iter *bio_pos, | |
232 | u32 bio_length) | |
a4ce40a9 AE |
233 | { |
234 | struct ceph_osd_data *osd_data; | |
863c7eb5 AE |
235 | |
236 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); | |
5359a17d | 237 | ceph_osd_data_bio_init(osd_data, bio_pos, bio_length); |
a4ce40a9 AE |
238 | } |
239 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); | |
240 | #endif /* CONFIG_BLOCK */ | |
241 | ||
0010f705 ID |
242 | void osd_req_op_extent_osd_data_bvecs(struct ceph_osd_request *osd_req, |
243 | unsigned int which, | |
244 | struct bio_vec *bvecs, u32 num_bvecs, | |
245 | u32 bytes) | |
246 | { | |
247 | struct ceph_osd_data *osd_data; | |
248 | struct ceph_bvec_iter it = { | |
249 | .bvecs = bvecs, | |
250 | .iter = { .bi_size = bytes }, | |
251 | }; | |
252 | ||
253 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); | |
254 | ceph_osd_data_bvecs_init(osd_data, &it, num_bvecs); | |
255 | } | |
256 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvecs); | |
257 | ||
b9e281c2 ID |
258 | void osd_req_op_extent_osd_data_bvec_pos(struct ceph_osd_request *osd_req, |
259 | unsigned int which, | |
260 | struct ceph_bvec_iter *bvec_pos) | |
261 | { | |
262 | struct ceph_osd_data *osd_data; | |
263 | ||
264 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); | |
0010f705 | 265 | ceph_osd_data_bvecs_init(osd_data, bvec_pos, 0); |
b9e281c2 ID |
266 | } |
267 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvec_pos); | |
268 | ||
a4ce40a9 AE |
269 | static void osd_req_op_cls_request_info_pagelist( |
270 | struct ceph_osd_request *osd_req, | |
271 | unsigned int which, struct ceph_pagelist *pagelist) | |
272 | { | |
273 | struct ceph_osd_data *osd_data; | |
274 | ||
863c7eb5 | 275 | osd_data = osd_req_op_data(osd_req, which, cls, request_info); |
a4ce40a9 | 276 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
277 | } |
278 | ||
04017e29 AE |
279 | void osd_req_op_cls_request_data_pagelist( |
280 | struct ceph_osd_request *osd_req, | |
281 | unsigned int which, struct ceph_pagelist *pagelist) | |
282 | { | |
283 | struct ceph_osd_data *osd_data; | |
284 | ||
863c7eb5 | 285 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); |
04017e29 | 286 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
bb873b53 ID |
287 | osd_req->r_ops[which].cls.indata_len += pagelist->length; |
288 | osd_req->r_ops[which].indata_len += pagelist->length; | |
04017e29 AE |
289 | } |
290 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); | |
291 | ||
6c57b554 AE |
292 | void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, |
293 | unsigned int which, struct page **pages, u64 length, | |
294 | u32 alignment, bool pages_from_pool, bool own_pages) | |
295 | { | |
296 | struct ceph_osd_data *osd_data; | |
297 | ||
298 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); | |
299 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
300 | pages_from_pool, own_pages); | |
bb873b53 ID |
301 | osd_req->r_ops[which].cls.indata_len += length; |
302 | osd_req->r_ops[which].indata_len += length; | |
6c57b554 AE |
303 | } |
304 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); | |
305 | ||
b9e281c2 ID |
306 | void osd_req_op_cls_request_data_bvecs(struct ceph_osd_request *osd_req, |
307 | unsigned int which, | |
0010f705 ID |
308 | struct bio_vec *bvecs, u32 num_bvecs, |
309 | u32 bytes) | |
b9e281c2 ID |
310 | { |
311 | struct ceph_osd_data *osd_data; | |
312 | struct ceph_bvec_iter it = { | |
313 | .bvecs = bvecs, | |
314 | .iter = { .bi_size = bytes }, | |
315 | }; | |
316 | ||
317 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); | |
0010f705 | 318 | ceph_osd_data_bvecs_init(osd_data, &it, num_bvecs); |
b9e281c2 ID |
319 | osd_req->r_ops[which].cls.indata_len += bytes; |
320 | osd_req->r_ops[which].indata_len += bytes; | |
321 | } | |
322 | EXPORT_SYMBOL(osd_req_op_cls_request_data_bvecs); | |
323 | ||
a4ce40a9 AE |
324 | void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, |
325 | unsigned int which, struct page **pages, u64 length, | |
326 | u32 alignment, bool pages_from_pool, bool own_pages) | |
327 | { | |
328 | struct ceph_osd_data *osd_data; | |
329 | ||
863c7eb5 | 330 | osd_data = osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
331 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
332 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
333 | } |
334 | EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); | |
335 | ||
23c08a9c AE |
336 | static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) |
337 | { | |
338 | switch (osd_data->type) { | |
339 | case CEPH_OSD_DATA_TYPE_NONE: | |
340 | return 0; | |
341 | case CEPH_OSD_DATA_TYPE_PAGES: | |
342 | return osd_data->length; | |
343 | case CEPH_OSD_DATA_TYPE_PAGELIST: | |
344 | return (u64)osd_data->pagelist->length; | |
345 | #ifdef CONFIG_BLOCK | |
346 | case CEPH_OSD_DATA_TYPE_BIO: | |
347 | return (u64)osd_data->bio_length; | |
348 | #endif /* CONFIG_BLOCK */ | |
b9e281c2 ID |
349 | case CEPH_OSD_DATA_TYPE_BVECS: |
350 | return osd_data->bvec_pos.iter.bi_size; | |
23c08a9c AE |
351 | default: |
352 | WARN(true, "unrecognized data type %d\n", (int)osd_data->type); | |
353 | return 0; | |
354 | } | |
355 | } | |
356 | ||
c54d47bf AE |
357 | static void ceph_osd_data_release(struct ceph_osd_data *osd_data) |
358 | { | |
5476492f | 359 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { |
c54d47bf AE |
360 | int num_pages; |
361 | ||
362 | num_pages = calc_pages_for((u64)osd_data->alignment, | |
363 | (u64)osd_data->length); | |
364 | ceph_release_page_vector(osd_data->pages, num_pages); | |
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; | |
5476492f AE |
405 | default: |
406 | break; | |
407 | } | |
c54d47bf AE |
408 | } |
409 | ||
63244fa1 ID |
410 | /* |
411 | * Assumes @t is zero-initialized. | |
412 | */ | |
413 | static void target_init(struct ceph_osd_request_target *t) | |
414 | { | |
415 | ceph_oid_init(&t->base_oid); | |
416 | ceph_oloc_init(&t->base_oloc); | |
417 | ceph_oid_init(&t->target_oid); | |
418 | ceph_oloc_init(&t->target_oloc); | |
419 | ||
420 | ceph_osds_init(&t->acting); | |
421 | ceph_osds_init(&t->up); | |
422 | t->size = -1; | |
423 | t->min_size = -1; | |
424 | ||
425 | t->osd = CEPH_HOMELESS_OSD; | |
426 | } | |
427 | ||
922dab61 ID |
428 | static void target_copy(struct ceph_osd_request_target *dest, |
429 | const struct ceph_osd_request_target *src) | |
430 | { | |
431 | ceph_oid_copy(&dest->base_oid, &src->base_oid); | |
432 | ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); | |
433 | ceph_oid_copy(&dest->target_oid, &src->target_oid); | |
434 | ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); | |
435 | ||
436 | dest->pgid = src->pgid; /* struct */ | |
dc98ff72 | 437 | dest->spgid = src->spgid; /* struct */ |
922dab61 ID |
438 | dest->pg_num = src->pg_num; |
439 | dest->pg_num_mask = src->pg_num_mask; | |
440 | ceph_osds_copy(&dest->acting, &src->acting); | |
441 | ceph_osds_copy(&dest->up, &src->up); | |
442 | dest->size = src->size; | |
443 | dest->min_size = src->min_size; | |
444 | dest->sort_bitwise = src->sort_bitwise; | |
445 | ||
446 | dest->flags = src->flags; | |
447 | dest->paused = src->paused; | |
448 | ||
04c7d789 | 449 | dest->epoch = src->epoch; |
dc93e0e2 ID |
450 | dest->last_force_resend = src->last_force_resend; |
451 | ||
922dab61 ID |
452 | dest->osd = src->osd; |
453 | } | |
454 | ||
63244fa1 ID |
455 | static void target_destroy(struct ceph_osd_request_target *t) |
456 | { | |
457 | ceph_oid_destroy(&t->base_oid); | |
30c156d9 | 458 | ceph_oloc_destroy(&t->base_oloc); |
63244fa1 | 459 | ceph_oid_destroy(&t->target_oid); |
30c156d9 | 460 | ceph_oloc_destroy(&t->target_oloc); |
63244fa1 ID |
461 | } |
462 | ||
f24e9980 SW |
463 | /* |
464 | * requests | |
465 | */ | |
3540bfdb ID |
466 | static void request_release_checks(struct ceph_osd_request *req) |
467 | { | |
468 | WARN_ON(!RB_EMPTY_NODE(&req->r_node)); | |
4609245e | 469 | WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node)); |
3540bfdb ID |
470 | WARN_ON(!list_empty(&req->r_unsafe_item)); |
471 | WARN_ON(req->r_osd); | |
472 | } | |
473 | ||
9e94af20 | 474 | static void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 475 | { |
9e94af20 ID |
476 | struct ceph_osd_request *req = container_of(kref, |
477 | struct ceph_osd_request, r_kref); | |
5476492f | 478 | unsigned int which; |
415e49a9 | 479 | |
9e94af20 ID |
480 | dout("%s %p (r_request %p r_reply %p)\n", __func__, req, |
481 | req->r_request, req->r_reply); | |
3540bfdb | 482 | request_release_checks(req); |
9e94af20 | 483 | |
415e49a9 SW |
484 | if (req->r_request) |
485 | ceph_msg_put(req->r_request); | |
5aea3dcd | 486 | if (req->r_reply) |
ab8cb34a | 487 | ceph_msg_put(req->r_reply); |
0fff87ec | 488 | |
5476492f AE |
489 | for (which = 0; which < req->r_num_ops; which++) |
490 | osd_req_op_data_release(req, which); | |
0fff87ec | 491 | |
a66dd383 | 492 | target_destroy(&req->r_t); |
415e49a9 | 493 | ceph_put_snap_context(req->r_snapc); |
d30291b9 | 494 | |
415e49a9 SW |
495 | if (req->r_mempool) |
496 | mempool_free(req, req->r_osdc->req_mempool); | |
3f1af42a | 497 | else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) |
5522ae0b | 498 | kmem_cache_free(ceph_osd_request_cache, req); |
3f1af42a ID |
499 | else |
500 | kfree(req); | |
f24e9980 | 501 | } |
9e94af20 ID |
502 | |
503 | void ceph_osdc_get_request(struct ceph_osd_request *req) | |
504 | { | |
505 | dout("%s %p (was %d)\n", __func__, req, | |
2c935bc5 | 506 | kref_read(&req->r_kref)); |
9e94af20 ID |
507 | kref_get(&req->r_kref); |
508 | } | |
509 | EXPORT_SYMBOL(ceph_osdc_get_request); | |
510 | ||
511 | void ceph_osdc_put_request(struct ceph_osd_request *req) | |
512 | { | |
3ed97d63 ID |
513 | if (req) { |
514 | dout("%s %p (was %d)\n", __func__, req, | |
2c935bc5 | 515 | kref_read(&req->r_kref)); |
3ed97d63 ID |
516 | kref_put(&req->r_kref, ceph_osdc_release_request); |
517 | } | |
9e94af20 ID |
518 | } |
519 | EXPORT_SYMBOL(ceph_osdc_put_request); | |
68b4476b | 520 | |
3540bfdb ID |
521 | static void request_init(struct ceph_osd_request *req) |
522 | { | |
523 | /* req only, each op is zeroed in _osd_req_op_init() */ | |
524 | memset(req, 0, sizeof(*req)); | |
525 | ||
526 | kref_init(&req->r_kref); | |
527 | init_completion(&req->r_completion); | |
3540bfdb | 528 | RB_CLEAR_NODE(&req->r_node); |
4609245e | 529 | RB_CLEAR_NODE(&req->r_mc_node); |
3540bfdb ID |
530 | INIT_LIST_HEAD(&req->r_unsafe_item); |
531 | ||
532 | target_init(&req->r_t); | |
533 | } | |
534 | ||
922dab61 ID |
535 | /* |
536 | * This is ugly, but it allows us to reuse linger registration and ping | |
537 | * requests, keeping the structure of the code around send_linger{_ping}() | |
538 | * reasonable. Setting up a min_nr=2 mempool for each linger request | |
539 | * and dealing with copying ops (this blasts req only, watch op remains | |
540 | * intact) isn't any better. | |
541 | */ | |
542 | static void request_reinit(struct ceph_osd_request *req) | |
543 | { | |
544 | struct ceph_osd_client *osdc = req->r_osdc; | |
545 | bool mempool = req->r_mempool; | |
546 | unsigned int num_ops = req->r_num_ops; | |
547 | u64 snapid = req->r_snapid; | |
548 | struct ceph_snap_context *snapc = req->r_snapc; | |
549 | bool linger = req->r_linger; | |
550 | struct ceph_msg *request_msg = req->r_request; | |
551 | struct ceph_msg *reply_msg = req->r_reply; | |
552 | ||
553 | dout("%s req %p\n", __func__, req); | |
2c935bc5 | 554 | WARN_ON(kref_read(&req->r_kref) != 1); |
922dab61 ID |
555 | request_release_checks(req); |
556 | ||
2c935bc5 PZ |
557 | WARN_ON(kref_read(&request_msg->kref) != 1); |
558 | WARN_ON(kref_read(&reply_msg->kref) != 1); | |
922dab61 ID |
559 | target_destroy(&req->r_t); |
560 | ||
561 | request_init(req); | |
562 | req->r_osdc = osdc; | |
563 | req->r_mempool = mempool; | |
564 | req->r_num_ops = num_ops; | |
565 | req->r_snapid = snapid; | |
566 | req->r_snapc = snapc; | |
567 | req->r_linger = linger; | |
568 | req->r_request = request_msg; | |
569 | req->r_reply = reply_msg; | |
570 | } | |
571 | ||
3499e8a5 | 572 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 573 | struct ceph_snap_context *snapc, |
1b83bef2 | 574 | unsigned int num_ops, |
3499e8a5 | 575 | bool use_mempool, |
54a54007 | 576 | gfp_t gfp_flags) |
f24e9980 SW |
577 | { |
578 | struct ceph_osd_request *req; | |
1b83bef2 | 579 | |
f24e9980 | 580 | if (use_mempool) { |
3f1af42a | 581 | BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); |
3499e8a5 | 582 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
3f1af42a ID |
583 | } else if (num_ops <= CEPH_OSD_SLAB_OPS) { |
584 | req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); | |
f24e9980 | 585 | } else { |
3f1af42a | 586 | BUG_ON(num_ops > CEPH_OSD_MAX_OPS); |
acafe7e3 | 587 | req = kmalloc(struct_size(req, r_ops, num_ops), gfp_flags); |
f24e9980 | 588 | } |
3f1af42a | 589 | if (unlikely(!req)) |
a79832f2 | 590 | return NULL; |
f24e9980 | 591 | |
3540bfdb | 592 | request_init(req); |
f24e9980 SW |
593 | req->r_osdc = osdc; |
594 | req->r_mempool = use_mempool; | |
79528734 | 595 | req->r_num_ops = num_ops; |
84127282 ID |
596 | req->r_snapid = CEPH_NOSNAP; |
597 | req->r_snapc = ceph_get_snap_context(snapc); | |
68b4476b | 598 | |
13d1ad16 ID |
599 | dout("%s req %p\n", __func__, req); |
600 | return req; | |
601 | } | |
602 | EXPORT_SYMBOL(ceph_osdc_alloc_request); | |
3f1af42a | 603 | |
2e59ffd1 | 604 | static int ceph_oloc_encoding_size(const struct ceph_object_locator *oloc) |
30c156d9 YZ |
605 | { |
606 | return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0); | |
607 | } | |
608 | ||
13d1ad16 ID |
609 | int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) |
610 | { | |
611 | struct ceph_osd_client *osdc = req->r_osdc; | |
612 | struct ceph_msg *msg; | |
613 | int msg_size; | |
c16e7869 | 614 | |
d30291b9 | 615 | WARN_ON(ceph_oid_empty(&req->r_base_oid)); |
30c156d9 | 616 | WARN_ON(ceph_oloc_empty(&req->r_base_oloc)); |
d30291b9 | 617 | |
13d1ad16 | 618 | /* create request message */ |
8cb441c0 ID |
619 | msg_size = CEPH_ENCODING_START_BLK_LEN + |
620 | CEPH_PGID_ENCODING_LEN + 1; /* spgid */ | |
621 | msg_size += 4 + 4 + 4; /* hash, osdmap_epoch, flags */ | |
622 | msg_size += CEPH_ENCODING_START_BLK_LEN + | |
623 | sizeof(struct ceph_osd_reqid); /* reqid */ | |
624 | msg_size += sizeof(struct ceph_blkin_trace_info); /* trace */ | |
625 | msg_size += 4 + sizeof(struct ceph_timespec); /* client_inc, mtime */ | |
30c156d9 YZ |
626 | msg_size += CEPH_ENCODING_START_BLK_LEN + |
627 | ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */ | |
13d1ad16 ID |
628 | msg_size += 4 + req->r_base_oid.name_len; /* oid */ |
629 | msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); | |
ae458f5a ID |
630 | msg_size += 8; /* snapid */ |
631 | msg_size += 8; /* snap_seq */ | |
13d1ad16 | 632 | msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); |
8cb441c0 | 633 | msg_size += 4 + 8; /* retry_attempt, features */ |
ae458f5a | 634 | |
13d1ad16 | 635 | if (req->r_mempool) |
8f3bc053 | 636 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 637 | else |
13d1ad16 ID |
638 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); |
639 | if (!msg) | |
640 | return -ENOMEM; | |
68b4476b | 641 | |
f24e9980 | 642 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 | 643 | req->r_request = msg; |
3499e8a5 | 644 | |
13d1ad16 ID |
645 | /* create reply message */ |
646 | msg_size = OSD_OPREPLY_FRONT_LEN; | |
711da55d ID |
647 | msg_size += req->r_base_oid.name_len; |
648 | msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); | |
13d1ad16 ID |
649 | |
650 | if (req->r_mempool) | |
651 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
652 | else | |
653 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); | |
654 | if (!msg) | |
655 | return -ENOMEM; | |
656 | ||
657 | req->r_reply = msg; | |
658 | ||
659 | return 0; | |
3499e8a5 | 660 | } |
13d1ad16 | 661 | EXPORT_SYMBOL(ceph_osdc_alloc_messages); |
3499e8a5 | 662 | |
a8dd0a37 | 663 | static bool osd_req_opcode_valid(u16 opcode) |
68b4476b | 664 | { |
a8dd0a37 | 665 | switch (opcode) { |
70b5bfa3 ID |
666 | #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; |
667 | __CEPH_FORALL_OSD_OPS(GENERATE_CASE) | |
668 | #undef GENERATE_CASE | |
a8dd0a37 AE |
669 | default: |
670 | return false; | |
671 | } | |
672 | } | |
673 | ||
33803f33 AE |
674 | /* |
675 | * This is an osd op init function for opcodes that have no data or | |
676 | * other information associated with them. It also serves as a | |
677 | * common init routine for all the other init functions, below. | |
678 | */ | |
c99d2d4a | 679 | static struct ceph_osd_req_op * |
49719778 | 680 | _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, |
144cba14 | 681 | u16 opcode, u32 flags) |
33803f33 | 682 | { |
c99d2d4a AE |
683 | struct ceph_osd_req_op *op; |
684 | ||
685 | BUG_ON(which >= osd_req->r_num_ops); | |
33803f33 AE |
686 | BUG_ON(!osd_req_opcode_valid(opcode)); |
687 | ||
c99d2d4a | 688 | op = &osd_req->r_ops[which]; |
33803f33 | 689 | memset(op, 0, sizeof (*op)); |
33803f33 | 690 | op->op = opcode; |
144cba14 | 691 | op->flags = flags; |
c99d2d4a AE |
692 | |
693 | return op; | |
33803f33 AE |
694 | } |
695 | ||
49719778 | 696 | void osd_req_op_init(struct ceph_osd_request *osd_req, |
144cba14 | 697 | unsigned int which, u16 opcode, u32 flags) |
49719778 | 698 | { |
144cba14 | 699 | (void)_osd_req_op_init(osd_req, which, opcode, flags); |
49719778 AE |
700 | } |
701 | EXPORT_SYMBOL(osd_req_op_init); | |
702 | ||
c99d2d4a AE |
703 | void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
704 | unsigned int which, u16 opcode, | |
33803f33 AE |
705 | u64 offset, u64 length, |
706 | u64 truncate_size, u32 truncate_seq) | |
707 | { | |
144cba14 YZ |
708 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
709 | opcode, 0); | |
33803f33 AE |
710 | size_t payload_len = 0; |
711 | ||
ad7a60de | 712 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
e30b7577 ID |
713 | opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && |
714 | opcode != CEPH_OSD_OP_TRUNCATE); | |
33803f33 | 715 | |
33803f33 AE |
716 | op->extent.offset = offset; |
717 | op->extent.length = length; | |
718 | op->extent.truncate_size = truncate_size; | |
719 | op->extent.truncate_seq = truncate_seq; | |
e30b7577 | 720 | if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) |
33803f33 AE |
721 | payload_len += length; |
722 | ||
de2aa102 | 723 | op->indata_len = payload_len; |
33803f33 AE |
724 | } |
725 | EXPORT_SYMBOL(osd_req_op_extent_init); | |
726 | ||
c99d2d4a AE |
727 | void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
728 | unsigned int which, u64 length) | |
e5975c7c | 729 | { |
c99d2d4a AE |
730 | struct ceph_osd_req_op *op; |
731 | u64 previous; | |
732 | ||
733 | BUG_ON(which >= osd_req->r_num_ops); | |
734 | op = &osd_req->r_ops[which]; | |
735 | previous = op->extent.length; | |
e5975c7c AE |
736 | |
737 | if (length == previous) | |
738 | return; /* Nothing to do */ | |
739 | BUG_ON(length > previous); | |
740 | ||
741 | op->extent.length = length; | |
d641df81 YZ |
742 | if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) |
743 | op->indata_len -= previous - length; | |
e5975c7c AE |
744 | } |
745 | EXPORT_SYMBOL(osd_req_op_extent_update); | |
746 | ||
2c63f49a YZ |
747 | void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, |
748 | unsigned int which, u64 offset_inc) | |
749 | { | |
750 | struct ceph_osd_req_op *op, *prev_op; | |
751 | ||
752 | BUG_ON(which + 1 >= osd_req->r_num_ops); | |
753 | ||
754 | prev_op = &osd_req->r_ops[which]; | |
755 | op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); | |
756 | /* dup previous one */ | |
757 | op->indata_len = prev_op->indata_len; | |
758 | op->outdata_len = prev_op->outdata_len; | |
759 | op->extent = prev_op->extent; | |
760 | /* adjust offset */ | |
761 | op->extent.offset += offset_inc; | |
762 | op->extent.length -= offset_inc; | |
763 | ||
764 | if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) | |
765 | op->indata_len -= offset_inc; | |
766 | } | |
767 | EXPORT_SYMBOL(osd_req_op_extent_dup_last); | |
768 | ||
fe943d50 | 769 | int osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, |
04017e29 | 770 | u16 opcode, const char *class, const char *method) |
33803f33 | 771 | { |
144cba14 YZ |
772 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
773 | opcode, 0); | |
5f562df5 | 774 | struct ceph_pagelist *pagelist; |
33803f33 AE |
775 | size_t payload_len = 0; |
776 | size_t size; | |
777 | ||
778 | BUG_ON(opcode != CEPH_OSD_OP_CALL); | |
779 | ||
5f562df5 | 780 | pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); |
fe943d50 CX |
781 | if (!pagelist) |
782 | return -ENOMEM; | |
783 | ||
5f562df5 AE |
784 | ceph_pagelist_init(pagelist); |
785 | ||
33803f33 AE |
786 | op->cls.class_name = class; |
787 | size = strlen(class); | |
788 | BUG_ON(size > (size_t) U8_MAX); | |
789 | op->cls.class_len = size; | |
5f562df5 | 790 | ceph_pagelist_append(pagelist, class, size); |
33803f33 AE |
791 | payload_len += size; |
792 | ||
793 | op->cls.method_name = method; | |
794 | size = strlen(method); | |
795 | BUG_ON(size > (size_t) U8_MAX); | |
796 | op->cls.method_len = size; | |
5f562df5 | 797 | ceph_pagelist_append(pagelist, method, size); |
33803f33 AE |
798 | payload_len += size; |
799 | ||
a4ce40a9 | 800 | osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); |
5f562df5 | 801 | |
de2aa102 | 802 | op->indata_len = payload_len; |
fe943d50 | 803 | return 0; |
33803f33 AE |
804 | } |
805 | EXPORT_SYMBOL(osd_req_op_cls_init); | |
8c042b0d | 806 | |
d74b50be YZ |
807 | int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, |
808 | u16 opcode, const char *name, const void *value, | |
809 | size_t size, u8 cmp_op, u8 cmp_mode) | |
810 | { | |
144cba14 YZ |
811 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
812 | opcode, 0); | |
d74b50be YZ |
813 | struct ceph_pagelist *pagelist; |
814 | size_t payload_len; | |
815 | ||
816 | BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); | |
817 | ||
818 | pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); | |
819 | if (!pagelist) | |
820 | return -ENOMEM; | |
821 | ||
822 | ceph_pagelist_init(pagelist); | |
823 | ||
824 | payload_len = strlen(name); | |
825 | op->xattr.name_len = payload_len; | |
826 | ceph_pagelist_append(pagelist, name, payload_len); | |
827 | ||
828 | op->xattr.value_len = size; | |
829 | ceph_pagelist_append(pagelist, value, size); | |
830 | payload_len += size; | |
831 | ||
832 | op->xattr.cmp_op = cmp_op; | |
833 | op->xattr.cmp_mode = cmp_mode; | |
834 | ||
835 | ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); | |
de2aa102 | 836 | op->indata_len = payload_len; |
d74b50be YZ |
837 | return 0; |
838 | } | |
839 | EXPORT_SYMBOL(osd_req_op_xattr_init); | |
840 | ||
922dab61 ID |
841 | /* |
842 | * @watch_opcode: CEPH_OSD_WATCH_OP_* | |
843 | */ | |
844 | static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, | |
845 | u64 cookie, u8 watch_opcode) | |
33803f33 | 846 | { |
922dab61 | 847 | struct ceph_osd_req_op *op; |
33803f33 | 848 | |
922dab61 | 849 | op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); |
33803f33 | 850 | op->watch.cookie = cookie; |
922dab61 ID |
851 | op->watch.op = watch_opcode; |
852 | op->watch.gen = 0; | |
33803f33 | 853 | } |
33803f33 | 854 | |
c647b8a8 ID |
855 | void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, |
856 | unsigned int which, | |
857 | u64 expected_object_size, | |
858 | u64 expected_write_size) | |
859 | { | |
860 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, | |
144cba14 YZ |
861 | CEPH_OSD_OP_SETALLOCHINT, |
862 | 0); | |
c647b8a8 ID |
863 | |
864 | op->alloc_hint.expected_object_size = expected_object_size; | |
865 | op->alloc_hint.expected_write_size = expected_write_size; | |
866 | ||
867 | /* | |
868 | * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed | |
869 | * not worth a feature bit. Set FAILOK per-op flag to make | |
870 | * sure older osds don't trip over an unsupported opcode. | |
871 | */ | |
872 | op->flags |= CEPH_OSD_OP_FLAG_FAILOK; | |
873 | } | |
874 | EXPORT_SYMBOL(osd_req_op_alloc_hint_init); | |
875 | ||
90af3602 | 876 | static void ceph_osdc_msg_data_add(struct ceph_msg *msg, |
ec9123c5 AE |
877 | struct ceph_osd_data *osd_data) |
878 | { | |
879 | u64 length = ceph_osd_data_length(osd_data); | |
880 | ||
881 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { | |
882 | BUG_ON(length > (u64) SIZE_MAX); | |
883 | if (length) | |
90af3602 | 884 | ceph_msg_data_add_pages(msg, osd_data->pages, |
ec9123c5 AE |
885 | length, osd_data->alignment); |
886 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { | |
887 | BUG_ON(!length); | |
90af3602 | 888 | ceph_msg_data_add_pagelist(msg, osd_data->pagelist); |
ec9123c5 AE |
889 | #ifdef CONFIG_BLOCK |
890 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { | |
5359a17d | 891 | ceph_msg_data_add_bio(msg, &osd_data->bio_pos, length); |
ec9123c5 | 892 | #endif |
b9e281c2 ID |
893 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BVECS) { |
894 | ceph_msg_data_add_bvecs(msg, &osd_data->bvec_pos); | |
ec9123c5 AE |
895 | } else { |
896 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); | |
897 | } | |
898 | } | |
899 | ||
bb873b53 ID |
900 | static u32 osd_req_encode_op(struct ceph_osd_op *dst, |
901 | const struct ceph_osd_req_op *src) | |
a8dd0a37 | 902 | { |
a8dd0a37 AE |
903 | if (WARN_ON(!osd_req_opcode_valid(src->op))) { |
904 | pr_err("unrecognized osd opcode %d\n", src->op); | |
905 | ||
906 | return 0; | |
907 | } | |
908 | ||
909 | switch (src->op) { | |
910 | case CEPH_OSD_OP_STAT: | |
911 | break; | |
912 | case CEPH_OSD_OP_READ: | |
913 | case CEPH_OSD_OP_WRITE: | |
e30b7577 | 914 | case CEPH_OSD_OP_WRITEFULL: |
ad7a60de | 915 | case CEPH_OSD_OP_ZERO: |
ad7a60de | 916 | case CEPH_OSD_OP_TRUNCATE: |
a8dd0a37 AE |
917 | dst->extent.offset = cpu_to_le64(src->extent.offset); |
918 | dst->extent.length = cpu_to_le64(src->extent.length); | |
919 | dst->extent.truncate_size = | |
920 | cpu_to_le64(src->extent.truncate_size); | |
921 | dst->extent.truncate_seq = | |
922 | cpu_to_le32(src->extent.truncate_seq); | |
923 | break; | |
924 | case CEPH_OSD_OP_CALL: | |
a8dd0a37 AE |
925 | dst->cls.class_len = src->cls.class_len; |
926 | dst->cls.method_len = src->cls.method_len; | |
bb873b53 | 927 | dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); |
a8dd0a37 | 928 | break; |
a8dd0a37 AE |
929 | case CEPH_OSD_OP_WATCH: |
930 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
922dab61 ID |
931 | dst->watch.ver = cpu_to_le64(0); |
932 | dst->watch.op = src->watch.op; | |
933 | dst->watch.gen = cpu_to_le32(src->watch.gen); | |
934 | break; | |
935 | case CEPH_OSD_OP_NOTIFY_ACK: | |
a8dd0a37 | 936 | break; |
19079203 ID |
937 | case CEPH_OSD_OP_NOTIFY: |
938 | dst->notify.cookie = cpu_to_le64(src->notify.cookie); | |
939 | break; | |
a4ed38d7 DF |
940 | case CEPH_OSD_OP_LIST_WATCHERS: |
941 | break; | |
c647b8a8 ID |
942 | case CEPH_OSD_OP_SETALLOCHINT: |
943 | dst->alloc_hint.expected_object_size = | |
944 | cpu_to_le64(src->alloc_hint.expected_object_size); | |
945 | dst->alloc_hint.expected_write_size = | |
946 | cpu_to_le64(src->alloc_hint.expected_write_size); | |
947 | break; | |
d74b50be YZ |
948 | case CEPH_OSD_OP_SETXATTR: |
949 | case CEPH_OSD_OP_CMPXATTR: | |
950 | dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); | |
951 | dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); | |
952 | dst->xattr.cmp_op = src->xattr.cmp_op; | |
953 | dst->xattr.cmp_mode = src->xattr.cmp_mode; | |
d74b50be | 954 | break; |
864e9197 YZ |
955 | case CEPH_OSD_OP_CREATE: |
956 | case CEPH_OSD_OP_DELETE: | |
957 | break; | |
a8dd0a37 | 958 | default: |
4c46459c | 959 | pr_err("unsupported osd opcode %s\n", |
8f63ca2d | 960 | ceph_osd_op_name(src->op)); |
4c46459c | 961 | WARN_ON(1); |
a8dd0a37 AE |
962 | |
963 | return 0; | |
68b4476b | 964 | } |
7b25bf5f | 965 | |
a8dd0a37 | 966 | dst->op = cpu_to_le16(src->op); |
7b25bf5f | 967 | dst->flags = cpu_to_le32(src->flags); |
de2aa102 | 968 | dst->payload_len = cpu_to_le32(src->indata_len); |
175face2 | 969 | |
bb873b53 | 970 | return src->indata_len; |
68b4476b YS |
971 | } |
972 | ||
3499e8a5 YS |
973 | /* |
974 | * build new request AND message, calculate layout, and adjust file | |
975 | * extent as needed. | |
976 | * | |
977 | * if the file was recently truncated, we include information about its | |
978 | * old and new size so that the object can be updated appropriately. (we | |
979 | * avoid synchronously deleting truncated objects because it's slow.) | |
3499e8a5 YS |
980 | */ |
981 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
982 | struct ceph_file_layout *layout, | |
983 | struct ceph_vino vino, | |
715e4cd4 YZ |
984 | u64 off, u64 *plen, |
985 | unsigned int which, int num_ops, | |
3499e8a5 YS |
986 | int opcode, int flags, |
987 | struct ceph_snap_context *snapc, | |
3499e8a5 YS |
988 | u32 truncate_seq, |
989 | u64 truncate_size, | |
153e5167 | 990 | bool use_mempool) |
3499e8a5 | 991 | { |
68b4476b | 992 | struct ceph_osd_request *req; |
75d1c941 AE |
993 | u64 objnum = 0; |
994 | u64 objoff = 0; | |
995 | u64 objlen = 0; | |
6816282d | 996 | int r; |
68b4476b | 997 | |
ad7a60de | 998 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
864e9197 YZ |
999 | opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && |
1000 | opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); | |
68b4476b | 1001 | |
acead002 | 1002 | req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, |
ae7ca4a3 | 1003 | GFP_NOFS); |
13d1ad16 ID |
1004 | if (!req) { |
1005 | r = -ENOMEM; | |
1006 | goto fail; | |
1007 | } | |
79528734 | 1008 | |
3499e8a5 | 1009 | /* calculate max write size */ |
a19dadfb | 1010 | r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); |
13d1ad16 ID |
1011 | if (r) |
1012 | goto fail; | |
a19dadfb | 1013 | |
864e9197 | 1014 | if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { |
144cba14 | 1015 | osd_req_op_init(req, which, opcode, 0); |
864e9197 | 1016 | } else { |
7627151e | 1017 | u32 object_size = layout->object_size; |
864e9197 YZ |
1018 | u32 object_base = off - objoff; |
1019 | if (!(truncate_seq == 1 && truncate_size == -1ULL)) { | |
1020 | if (truncate_size <= object_base) { | |
1021 | truncate_size = 0; | |
1022 | } else { | |
1023 | truncate_size -= object_base; | |
1024 | if (truncate_size > object_size) | |
1025 | truncate_size = object_size; | |
1026 | } | |
ccca4e37 | 1027 | } |
715e4cd4 | 1028 | osd_req_op_extent_init(req, which, opcode, objoff, objlen, |
864e9197 YZ |
1029 | truncate_size, truncate_seq); |
1030 | } | |
d18d1e28 | 1031 | |
bb873b53 | 1032 | req->r_flags = flags; |
7627151e | 1033 | req->r_base_oloc.pool = layout->pool_id; |
30c156d9 | 1034 | req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns); |
d30291b9 | 1035 | ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); |
dbe0fc41 | 1036 | |
bb873b53 ID |
1037 | req->r_snapid = vino.snap; |
1038 | if (flags & CEPH_OSD_FLAG_WRITE) | |
1039 | req->r_data_offset = off; | |
1040 | ||
13d1ad16 ID |
1041 | r = ceph_osdc_alloc_messages(req, GFP_NOFS); |
1042 | if (r) | |
1043 | goto fail; | |
1044 | ||
f24e9980 | 1045 | return req; |
13d1ad16 ID |
1046 | |
1047 | fail: | |
1048 | ceph_osdc_put_request(req); | |
1049 | return ERR_PTR(r); | |
f24e9980 | 1050 | } |
3d14c5d2 | 1051 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
1052 | |
1053 | /* | |
1054 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
1055 | */ | |
fcd00b68 | 1056 | DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) |
4609245e | 1057 | DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) |
f24e9980 | 1058 | |
66850df5 ID |
1059 | /* |
1060 | * Call @fn on each OSD request as long as @fn returns 0. | |
1061 | */ | |
1062 | static void for_each_request(struct ceph_osd_client *osdc, | |
1063 | int (*fn)(struct ceph_osd_request *req, void *arg), | |
1064 | void *arg) | |
1065 | { | |
1066 | struct rb_node *n, *p; | |
1067 | ||
1068 | for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { | |
1069 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
1070 | ||
1071 | for (p = rb_first(&osd->o_requests); p; ) { | |
1072 | struct ceph_osd_request *req = | |
1073 | rb_entry(p, struct ceph_osd_request, r_node); | |
1074 | ||
1075 | p = rb_next(p); | |
1076 | if (fn(req, arg)) | |
1077 | return; | |
1078 | } | |
1079 | } | |
1080 | ||
1081 | for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { | |
1082 | struct ceph_osd_request *req = | |
1083 | rb_entry(p, struct ceph_osd_request, r_node); | |
1084 | ||
1085 | p = rb_next(p); | |
1086 | if (fn(req, arg)) | |
1087 | return; | |
1088 | } | |
1089 | } | |
1090 | ||
0247a0cf ID |
1091 | static bool osd_homeless(struct ceph_osd *osd) |
1092 | { | |
1093 | return osd->o_osd == CEPH_HOMELESS_OSD; | |
1094 | } | |
1095 | ||
5aea3dcd | 1096 | static bool osd_registered(struct ceph_osd *osd) |
f24e9980 | 1097 | { |
5aea3dcd | 1098 | verify_osdc_locked(osd->o_osdc); |
f24e9980 | 1099 | |
5aea3dcd | 1100 | return !RB_EMPTY_NODE(&osd->o_node); |
f24e9980 SW |
1101 | } |
1102 | ||
0247a0cf ID |
1103 | /* |
1104 | * Assumes @osd is zero-initialized. | |
1105 | */ | |
1106 | static void osd_init(struct ceph_osd *osd) | |
1107 | { | |
02113a0f | 1108 | refcount_set(&osd->o_ref, 1); |
0247a0cf | 1109 | RB_CLEAR_NODE(&osd->o_node); |
5aea3dcd | 1110 | osd->o_requests = RB_ROOT; |
922dab61 | 1111 | osd->o_linger_requests = RB_ROOT; |
a02a946d ID |
1112 | osd->o_backoff_mappings = RB_ROOT; |
1113 | osd->o_backoffs_by_id = RB_ROOT; | |
0247a0cf ID |
1114 | INIT_LIST_HEAD(&osd->o_osd_lru); |
1115 | INIT_LIST_HEAD(&osd->o_keepalive_item); | |
1116 | osd->o_incarnation = 1; | |
5aea3dcd | 1117 | mutex_init(&osd->lock); |
0247a0cf ID |
1118 | } |
1119 | ||
1120 | static void osd_cleanup(struct ceph_osd *osd) | |
1121 | { | |
1122 | WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); | |
5aea3dcd | 1123 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); |
922dab61 | 1124 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); |
a02a946d ID |
1125 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoff_mappings)); |
1126 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoffs_by_id)); | |
0247a0cf ID |
1127 | WARN_ON(!list_empty(&osd->o_osd_lru)); |
1128 | WARN_ON(!list_empty(&osd->o_keepalive_item)); | |
1129 | ||
1130 | if (osd->o_auth.authorizer) { | |
1131 | WARN_ON(osd_homeless(osd)); | |
1132 | ceph_auth_destroy_authorizer(osd->o_auth.authorizer); | |
1133 | } | |
1134 | } | |
1135 | ||
f24e9980 SW |
1136 | /* |
1137 | * Track open sessions with osds. | |
1138 | */ | |
e10006f8 | 1139 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
1140 | { |
1141 | struct ceph_osd *osd; | |
1142 | ||
0247a0cf ID |
1143 | WARN_ON(onum == CEPH_HOMELESS_OSD); |
1144 | ||
7a28f59b | 1145 | osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); |
0247a0cf | 1146 | osd_init(osd); |
f24e9980 | 1147 | osd->o_osdc = osdc; |
e10006f8 | 1148 | osd->o_osd = onum; |
f24e9980 | 1149 | |
b7a9e5dd | 1150 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 1151 | |
f24e9980 SW |
1152 | return osd; |
1153 | } | |
1154 | ||
1155 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
1156 | { | |
02113a0f ER |
1157 | if (refcount_inc_not_zero(&osd->o_ref)) { |
1158 | dout("get_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref)-1, | |
1159 | refcount_read(&osd->o_ref)); | |
f24e9980 SW |
1160 | return osd; |
1161 | } else { | |
1162 | dout("get_osd %p FAIL\n", osd); | |
1163 | return NULL; | |
1164 | } | |
1165 | } | |
1166 | ||
1167 | static void put_osd(struct ceph_osd *osd) | |
1168 | { | |
02113a0f ER |
1169 | dout("put_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref), |
1170 | refcount_read(&osd->o_ref) - 1); | |
1171 | if (refcount_dec_and_test(&osd->o_ref)) { | |
0247a0cf | 1172 | osd_cleanup(osd); |
f24e9980 | 1173 | kfree(osd); |
79494d1b | 1174 | } |
f24e9980 SW |
1175 | } |
1176 | ||
fcd00b68 ID |
1177 | DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) |
1178 | ||
9dd2845c | 1179 | static void __move_osd_to_lru(struct ceph_osd *osd) |
f5a2041b | 1180 | { |
9dd2845c ID |
1181 | struct ceph_osd_client *osdc = osd->o_osdc; |
1182 | ||
1183 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
f5a2041b | 1184 | BUG_ON(!list_empty(&osd->o_osd_lru)); |
bbf37ec3 | 1185 | |
9dd2845c | 1186 | spin_lock(&osdc->osd_lru_lock); |
f5a2041b | 1187 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); |
9dd2845c ID |
1188 | spin_unlock(&osdc->osd_lru_lock); |
1189 | ||
a319bf56 | 1190 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; |
f5a2041b YS |
1191 | } |
1192 | ||
9dd2845c | 1193 | static void maybe_move_osd_to_lru(struct ceph_osd *osd) |
bbf37ec3 | 1194 | { |
5aea3dcd | 1195 | if (RB_EMPTY_ROOT(&osd->o_requests) && |
922dab61 | 1196 | RB_EMPTY_ROOT(&osd->o_linger_requests)) |
9dd2845c | 1197 | __move_osd_to_lru(osd); |
bbf37ec3 ID |
1198 | } |
1199 | ||
f5a2041b YS |
1200 | static void __remove_osd_from_lru(struct ceph_osd *osd) |
1201 | { | |
9dd2845c ID |
1202 | struct ceph_osd_client *osdc = osd->o_osdc; |
1203 | ||
1204 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
1205 | ||
1206 | spin_lock(&osdc->osd_lru_lock); | |
f5a2041b YS |
1207 | if (!list_empty(&osd->o_osd_lru)) |
1208 | list_del_init(&osd->o_osd_lru); | |
9dd2845c | 1209 | spin_unlock(&osdc->osd_lru_lock); |
f5a2041b YS |
1210 | } |
1211 | ||
5aea3dcd ID |
1212 | /* |
1213 | * Close the connection and assign any leftover requests to the | |
1214 | * homeless session. | |
1215 | */ | |
1216 | static void close_osd(struct ceph_osd *osd) | |
1217 | { | |
1218 | struct ceph_osd_client *osdc = osd->o_osdc; | |
1219 | struct rb_node *n; | |
1220 | ||
1221 | verify_osdc_wrlocked(osdc); | |
1222 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
1223 | ||
1224 | ceph_con_close(&osd->o_con); | |
1225 | ||
1226 | for (n = rb_first(&osd->o_requests); n; ) { | |
1227 | struct ceph_osd_request *req = | |
1228 | rb_entry(n, struct ceph_osd_request, r_node); | |
1229 | ||
1230 | n = rb_next(n); /* unlink_request() */ | |
1231 | ||
1232 | dout(" reassigning req %p tid %llu\n", req, req->r_tid); | |
1233 | unlink_request(osd, req); | |
1234 | link_request(&osdc->homeless_osd, req); | |
1235 | } | |
922dab61 ID |
1236 | for (n = rb_first(&osd->o_linger_requests); n; ) { |
1237 | struct ceph_osd_linger_request *lreq = | |
1238 | rb_entry(n, struct ceph_osd_linger_request, node); | |
1239 | ||
1240 | n = rb_next(n); /* unlink_linger() */ | |
1241 | ||
1242 | dout(" reassigning lreq %p linger_id %llu\n", lreq, | |
1243 | lreq->linger_id); | |
1244 | unlink_linger(osd, lreq); | |
1245 | link_linger(&osdc->homeless_osd, lreq); | |
1246 | } | |
a02a946d | 1247 | clear_backoffs(osd); |
5aea3dcd ID |
1248 | |
1249 | __remove_osd_from_lru(osd); | |
1250 | erase_osd(&osdc->osds, osd); | |
1251 | put_osd(osd); | |
1252 | } | |
1253 | ||
f24e9980 SW |
1254 | /* |
1255 | * reset osd connect | |
1256 | */ | |
5aea3dcd | 1257 | static int reopen_osd(struct ceph_osd *osd) |
f24e9980 | 1258 | { |
c3acb181 | 1259 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 1260 | |
5aea3dcd ID |
1261 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); |
1262 | ||
1263 | if (RB_EMPTY_ROOT(&osd->o_requests) && | |
922dab61 | 1264 | RB_EMPTY_ROOT(&osd->o_linger_requests)) { |
5aea3dcd | 1265 | close_osd(osd); |
c3acb181 AE |
1266 | return -ENODEV; |
1267 | } | |
1268 | ||
5aea3dcd | 1269 | peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; |
c3acb181 AE |
1270 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && |
1271 | !ceph_con_opened(&osd->o_con)) { | |
5aea3dcd | 1272 | struct rb_node *n; |
c3acb181 | 1273 | |
0b4af2e8 ID |
1274 | dout("osd addr hasn't changed and connection never opened, " |
1275 | "letting msgr retry\n"); | |
87b315a5 | 1276 | /* touch each r_stamp for handle_timeout()'s benfit */ |
5aea3dcd ID |
1277 | for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { |
1278 | struct ceph_osd_request *req = | |
1279 | rb_entry(n, struct ceph_osd_request, r_node); | |
87b315a5 | 1280 | req->r_stamp = jiffies; |
5aea3dcd | 1281 | } |
c3acb181 AE |
1282 | |
1283 | return -EAGAIN; | |
f24e9980 | 1284 | } |
c3acb181 AE |
1285 | |
1286 | ceph_con_close(&osd->o_con); | |
1287 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
1288 | osd->o_incarnation++; | |
1289 | ||
1290 | return 0; | |
f24e9980 SW |
1291 | } |
1292 | ||
5aea3dcd ID |
1293 | static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, |
1294 | bool wrlocked) | |
f24e9980 | 1295 | { |
5aea3dcd | 1296 | struct ceph_osd *osd; |
35f9f8a0 | 1297 | |
5aea3dcd ID |
1298 | if (wrlocked) |
1299 | verify_osdc_wrlocked(osdc); | |
1300 | else | |
1301 | verify_osdc_locked(osdc); | |
f24e9980 | 1302 | |
5aea3dcd ID |
1303 | if (o != CEPH_HOMELESS_OSD) |
1304 | osd = lookup_osd(&osdc->osds, o); | |
1305 | else | |
1306 | osd = &osdc->homeless_osd; | |
1307 | if (!osd) { | |
1308 | if (!wrlocked) | |
1309 | return ERR_PTR(-EAGAIN); | |
0ba6478d | 1310 | |
5aea3dcd ID |
1311 | osd = create_osd(osdc, o); |
1312 | insert_osd(&osdc->osds, osd); | |
1313 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, | |
1314 | &osdc->osdmap->osd_addr[osd->o_osd]); | |
0ba6478d | 1315 | } |
f24e9980 | 1316 | |
5aea3dcd ID |
1317 | dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); |
1318 | return osd; | |
f24e9980 SW |
1319 | } |
1320 | ||
1321 | /* | |
5aea3dcd ID |
1322 | * Create request <-> OSD session relation. |
1323 | * | |
1324 | * @req has to be assigned a tid, @osd may be homeless. | |
f24e9980 | 1325 | */ |
5aea3dcd | 1326 | static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) |
f24e9980 | 1327 | { |
5aea3dcd ID |
1328 | verify_osd_locked(osd); |
1329 | WARN_ON(!req->r_tid || req->r_osd); | |
1330 | dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, | |
1331 | req, req->r_tid); | |
1332 | ||
1333 | if (!osd_homeless(osd)) | |
1334 | __remove_osd_from_lru(osd); | |
1335 | else | |
1336 | atomic_inc(&osd->o_osdc->num_homeless); | |
1337 | ||
1338 | get_osd(osd); | |
1339 | insert_request(&osd->o_requests, req); | |
1340 | req->r_osd = osd; | |
f24e9980 SW |
1341 | } |
1342 | ||
5aea3dcd ID |
1343 | static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) |
1344 | { | |
1345 | verify_osd_locked(osd); | |
1346 | WARN_ON(req->r_osd != osd); | |
1347 | dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, | |
1348 | req, req->r_tid); | |
1349 | ||
1350 | req->r_osd = NULL; | |
1351 | erase_request(&osd->o_requests, req); | |
1352 | put_osd(osd); | |
1353 | ||
1354 | if (!osd_homeless(osd)) | |
1355 | maybe_move_osd_to_lru(osd); | |
1356 | else | |
1357 | atomic_dec(&osd->o_osdc->num_homeless); | |
1358 | } | |
1359 | ||
63244fa1 ID |
1360 | static bool __pool_full(struct ceph_pg_pool_info *pi) |
1361 | { | |
1362 | return pi->flags & CEPH_POOL_FLAG_FULL; | |
1363 | } | |
1364 | ||
42c1b124 ID |
1365 | static bool have_pool_full(struct ceph_osd_client *osdc) |
1366 | { | |
1367 | struct rb_node *n; | |
1368 | ||
1369 | for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { | |
1370 | struct ceph_pg_pool_info *pi = | |
1371 | rb_entry(n, struct ceph_pg_pool_info, node); | |
1372 | ||
1373 | if (__pool_full(pi)) | |
1374 | return true; | |
1375 | } | |
1376 | ||
1377 | return false; | |
1378 | } | |
1379 | ||
5aea3dcd ID |
1380 | static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) |
1381 | { | |
1382 | struct ceph_pg_pool_info *pi; | |
1383 | ||
1384 | pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); | |
1385 | if (!pi) | |
1386 | return false; | |
1387 | ||
1388 | return __pool_full(pi); | |
1389 | } | |
1390 | ||
d29adb34 JD |
1391 | /* |
1392 | * Returns whether a request should be blocked from being sent | |
1393 | * based on the current osdmap and osd_client settings. | |
d29adb34 | 1394 | */ |
63244fa1 ID |
1395 | static bool target_should_be_paused(struct ceph_osd_client *osdc, |
1396 | const struct ceph_osd_request_target *t, | |
1397 | struct ceph_pg_pool_info *pi) | |
1398 | { | |
b7ec35b3 ID |
1399 | bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); |
1400 | bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || | |
1401 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || | |
63244fa1 ID |
1402 | __pool_full(pi); |
1403 | ||
6d637a54 | 1404 | WARN_ON(pi->id != t->target_oloc.pool); |
58eb7932 JL |
1405 | return ((t->flags & CEPH_OSD_FLAG_READ) && pauserd) || |
1406 | ((t->flags & CEPH_OSD_FLAG_WRITE) && pausewr) || | |
1407 | (osdc->osdmap->epoch < osdc->epoch_barrier); | |
63244fa1 ID |
1408 | } |
1409 | ||
63244fa1 ID |
1410 | enum calc_target_result { |
1411 | CALC_TARGET_NO_ACTION = 0, | |
1412 | CALC_TARGET_NEED_RESEND, | |
1413 | CALC_TARGET_POOL_DNE, | |
1414 | }; | |
1415 | ||
1416 | static enum calc_target_result calc_target(struct ceph_osd_client *osdc, | |
1417 | struct ceph_osd_request_target *t, | |
7de030d6 | 1418 | struct ceph_connection *con, |
63244fa1 ID |
1419 | bool any_change) |
1420 | { | |
1421 | struct ceph_pg_pool_info *pi; | |
1422 | struct ceph_pg pgid, last_pgid; | |
1423 | struct ceph_osds up, acting; | |
1424 | bool force_resend = false; | |
84ed45df ID |
1425 | bool unpaused = false; |
1426 | bool legacy_change; | |
7de030d6 | 1427 | bool split = false; |
b7ec35b3 | 1428 | bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); |
ae78dd81 ID |
1429 | bool recovery_deletes = ceph_osdmap_flag(osdc, |
1430 | CEPH_OSDMAP_RECOVERY_DELETES); | |
63244fa1 | 1431 | enum calc_target_result ct_res; |
63244fa1 | 1432 | |
04c7d789 | 1433 | t->epoch = osdc->osdmap->epoch; |
63244fa1 ID |
1434 | pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); |
1435 | if (!pi) { | |
1436 | t->osd = CEPH_HOMELESS_OSD; | |
1437 | ct_res = CALC_TARGET_POOL_DNE; | |
1438 | goto out; | |
1439 | } | |
1440 | ||
1441 | if (osdc->osdmap->epoch == pi->last_force_request_resend) { | |
dc93e0e2 ID |
1442 | if (t->last_force_resend < pi->last_force_request_resend) { |
1443 | t->last_force_resend = pi->last_force_request_resend; | |
63244fa1 | 1444 | force_resend = true; |
dc93e0e2 | 1445 | } else if (t->last_force_resend == 0) { |
63244fa1 ID |
1446 | force_resend = true; |
1447 | } | |
1448 | } | |
63244fa1 | 1449 | |
db098ec4 ID |
1450 | /* apply tiering */ |
1451 | ceph_oid_copy(&t->target_oid, &t->base_oid); | |
1452 | ceph_oloc_copy(&t->target_oloc, &t->base_oloc); | |
1453 | if ((t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { | |
63244fa1 ID |
1454 | if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) |
1455 | t->target_oloc.pool = pi->read_tier; | |
1456 | if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) | |
1457 | t->target_oloc.pool = pi->write_tier; | |
6d637a54 ID |
1458 | |
1459 | pi = ceph_pg_pool_by_id(osdc->osdmap, t->target_oloc.pool); | |
1460 | if (!pi) { | |
1461 | t->osd = CEPH_HOMELESS_OSD; | |
1462 | ct_res = CALC_TARGET_POOL_DNE; | |
1463 | goto out; | |
1464 | } | |
63244fa1 ID |
1465 | } |
1466 | ||
a86f009f | 1467 | __ceph_object_locator_to_pg(pi, &t->target_oid, &t->target_oloc, &pgid); |
63244fa1 ID |
1468 | last_pgid.pool = pgid.pool; |
1469 | last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); | |
1470 | ||
df28152d | 1471 | ceph_pg_to_up_acting_osds(osdc->osdmap, pi, &pgid, &up, &acting); |
63244fa1 ID |
1472 | if (any_change && |
1473 | ceph_is_new_interval(&t->acting, | |
1474 | &acting, | |
1475 | &t->up, | |
1476 | &up, | |
1477 | t->size, | |
1478 | pi->size, | |
1479 | t->min_size, | |
1480 | pi->min_size, | |
1481 | t->pg_num, | |
1482 | pi->pg_num, | |
1483 | t->sort_bitwise, | |
1484 | sort_bitwise, | |
ae78dd81 ID |
1485 | t->recovery_deletes, |
1486 | recovery_deletes, | |
63244fa1 ID |
1487 | &last_pgid)) |
1488 | force_resend = true; | |
1489 | ||
1490 | if (t->paused && !target_should_be_paused(osdc, t, pi)) { | |
1491 | t->paused = false; | |
84ed45df | 1492 | unpaused = true; |
63244fa1 | 1493 | } |
84ed45df ID |
1494 | legacy_change = ceph_pg_compare(&t->pgid, &pgid) || |
1495 | ceph_osds_changed(&t->acting, &acting, any_change); | |
7de030d6 ID |
1496 | if (t->pg_num) |
1497 | split = ceph_pg_is_split(&last_pgid, t->pg_num, pi->pg_num); | |
63244fa1 | 1498 | |
7de030d6 | 1499 | if (legacy_change || force_resend || split) { |
63244fa1 | 1500 | t->pgid = pgid; /* struct */ |
df28152d | 1501 | ceph_pg_to_primary_shard(osdc->osdmap, pi, &pgid, &t->spgid); |
63244fa1 ID |
1502 | ceph_osds_copy(&t->acting, &acting); |
1503 | ceph_osds_copy(&t->up, &up); | |
1504 | t->size = pi->size; | |
1505 | t->min_size = pi->min_size; | |
1506 | t->pg_num = pi->pg_num; | |
1507 | t->pg_num_mask = pi->pg_num_mask; | |
1508 | t->sort_bitwise = sort_bitwise; | |
ae78dd81 | 1509 | t->recovery_deletes = recovery_deletes; |
63244fa1 ID |
1510 | |
1511 | t->osd = acting.primary; | |
63244fa1 ID |
1512 | } |
1513 | ||
7de030d6 ID |
1514 | if (unpaused || legacy_change || force_resend || |
1515 | (split && con && CEPH_HAVE_FEATURE(con->peer_features, | |
1516 | RESEND_ON_SPLIT))) | |
84ed45df ID |
1517 | ct_res = CALC_TARGET_NEED_RESEND; |
1518 | else | |
1519 | ct_res = CALC_TARGET_NO_ACTION; | |
1520 | ||
63244fa1 ID |
1521 | out: |
1522 | dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); | |
1523 | return ct_res; | |
1524 | } | |
1525 | ||
a02a946d ID |
1526 | static struct ceph_spg_mapping *alloc_spg_mapping(void) |
1527 | { | |
1528 | struct ceph_spg_mapping *spg; | |
1529 | ||
1530 | spg = kmalloc(sizeof(*spg), GFP_NOIO); | |
1531 | if (!spg) | |
1532 | return NULL; | |
1533 | ||
1534 | RB_CLEAR_NODE(&spg->node); | |
1535 | spg->backoffs = RB_ROOT; | |
1536 | return spg; | |
1537 | } | |
1538 | ||
1539 | static void free_spg_mapping(struct ceph_spg_mapping *spg) | |
1540 | { | |
1541 | WARN_ON(!RB_EMPTY_NODE(&spg->node)); | |
1542 | WARN_ON(!RB_EMPTY_ROOT(&spg->backoffs)); | |
1543 | ||
1544 | kfree(spg); | |
1545 | } | |
1546 | ||
1547 | /* | |
1548 | * rbtree of ceph_spg_mapping for handling map<spg_t, ...>, similar to | |
1549 | * ceph_pg_mapping. Used to track OSD backoffs -- a backoff [range] is | |
1550 | * defined only within a specific spgid; it does not pass anything to | |
1551 | * children on split, or to another primary. | |
1552 | */ | |
1553 | DEFINE_RB_FUNCS2(spg_mapping, struct ceph_spg_mapping, spgid, ceph_spg_compare, | |
1554 | RB_BYPTR, const struct ceph_spg *, node) | |
1555 | ||
1556 | static u64 hoid_get_bitwise_key(const struct ceph_hobject_id *hoid) | |
1557 | { | |
1558 | return hoid->is_max ? 0x100000000ull : hoid->hash_reverse_bits; | |
1559 | } | |
1560 | ||
1561 | static void hoid_get_effective_key(const struct ceph_hobject_id *hoid, | |
1562 | void **pkey, size_t *pkey_len) | |
1563 | { | |
1564 | if (hoid->key_len) { | |
1565 | *pkey = hoid->key; | |
1566 | *pkey_len = hoid->key_len; | |
1567 | } else { | |
1568 | *pkey = hoid->oid; | |
1569 | *pkey_len = hoid->oid_len; | |
1570 | } | |
1571 | } | |
1572 | ||
1573 | static int compare_names(const void *name1, size_t name1_len, | |
1574 | const void *name2, size_t name2_len) | |
1575 | { | |
1576 | int ret; | |
1577 | ||
1578 | ret = memcmp(name1, name2, min(name1_len, name2_len)); | |
1579 | if (!ret) { | |
1580 | if (name1_len < name2_len) | |
1581 | ret = -1; | |
1582 | else if (name1_len > name2_len) | |
1583 | ret = 1; | |
1584 | } | |
1585 | return ret; | |
1586 | } | |
1587 | ||
1588 | static int hoid_compare(const struct ceph_hobject_id *lhs, | |
1589 | const struct ceph_hobject_id *rhs) | |
1590 | { | |
1591 | void *effective_key1, *effective_key2; | |
1592 | size_t effective_key1_len, effective_key2_len; | |
1593 | int ret; | |
1594 | ||
1595 | if (lhs->is_max < rhs->is_max) | |
1596 | return -1; | |
1597 | if (lhs->is_max > rhs->is_max) | |
1598 | return 1; | |
1599 | ||
1600 | if (lhs->pool < rhs->pool) | |
1601 | return -1; | |
1602 | if (lhs->pool > rhs->pool) | |
1603 | return 1; | |
1604 | ||
1605 | if (hoid_get_bitwise_key(lhs) < hoid_get_bitwise_key(rhs)) | |
1606 | return -1; | |
1607 | if (hoid_get_bitwise_key(lhs) > hoid_get_bitwise_key(rhs)) | |
1608 | return 1; | |
1609 | ||
1610 | ret = compare_names(lhs->nspace, lhs->nspace_len, | |
1611 | rhs->nspace, rhs->nspace_len); | |
1612 | if (ret) | |
1613 | return ret; | |
1614 | ||
1615 | hoid_get_effective_key(lhs, &effective_key1, &effective_key1_len); | |
1616 | hoid_get_effective_key(rhs, &effective_key2, &effective_key2_len); | |
1617 | ret = compare_names(effective_key1, effective_key1_len, | |
1618 | effective_key2, effective_key2_len); | |
1619 | if (ret) | |
1620 | return ret; | |
1621 | ||
1622 | ret = compare_names(lhs->oid, lhs->oid_len, rhs->oid, rhs->oid_len); | |
1623 | if (ret) | |
1624 | return ret; | |
1625 | ||
1626 | if (lhs->snapid < rhs->snapid) | |
1627 | return -1; | |
1628 | if (lhs->snapid > rhs->snapid) | |
1629 | return 1; | |
1630 | ||
1631 | return 0; | |
1632 | } | |
1633 | ||
1634 | /* | |
1635 | * For decoding ->begin and ->end of MOSDBackoff only -- no MIN/MAX | |
1636 | * compat stuff here. | |
1637 | * | |
1638 | * Assumes @hoid is zero-initialized. | |
1639 | */ | |
1640 | static int decode_hoid(void **p, void *end, struct ceph_hobject_id *hoid) | |
1641 | { | |
1642 | u8 struct_v; | |
1643 | u32 struct_len; | |
1644 | int ret; | |
1645 | ||
1646 | ret = ceph_start_decoding(p, end, 4, "hobject_t", &struct_v, | |
1647 | &struct_len); | |
1648 | if (ret) | |
1649 | return ret; | |
1650 | ||
1651 | if (struct_v < 4) { | |
1652 | pr_err("got struct_v %d < 4 of hobject_t\n", struct_v); | |
1653 | goto e_inval; | |
1654 | } | |
1655 | ||
1656 | hoid->key = ceph_extract_encoded_string(p, end, &hoid->key_len, | |
1657 | GFP_NOIO); | |
1658 | if (IS_ERR(hoid->key)) { | |
1659 | ret = PTR_ERR(hoid->key); | |
1660 | hoid->key = NULL; | |
1661 | return ret; | |
1662 | } | |
1663 | ||
1664 | hoid->oid = ceph_extract_encoded_string(p, end, &hoid->oid_len, | |
1665 | GFP_NOIO); | |
1666 | if (IS_ERR(hoid->oid)) { | |
1667 | ret = PTR_ERR(hoid->oid); | |
1668 | hoid->oid = NULL; | |
1669 | return ret; | |
1670 | } | |
1671 | ||
1672 | ceph_decode_64_safe(p, end, hoid->snapid, e_inval); | |
1673 | ceph_decode_32_safe(p, end, hoid->hash, e_inval); | |
1674 | ceph_decode_8_safe(p, end, hoid->is_max, e_inval); | |
1675 | ||
1676 | hoid->nspace = ceph_extract_encoded_string(p, end, &hoid->nspace_len, | |
1677 | GFP_NOIO); | |
1678 | if (IS_ERR(hoid->nspace)) { | |
1679 | ret = PTR_ERR(hoid->nspace); | |
1680 | hoid->nspace = NULL; | |
1681 | return ret; | |
1682 | } | |
1683 | ||
1684 | ceph_decode_64_safe(p, end, hoid->pool, e_inval); | |
1685 | ||
1686 | ceph_hoid_build_hash_cache(hoid); | |
1687 | return 0; | |
1688 | ||
1689 | e_inval: | |
1690 | return -EINVAL; | |
1691 | } | |
1692 | ||
1693 | static int hoid_encoding_size(const struct ceph_hobject_id *hoid) | |
1694 | { | |
1695 | return 8 + 4 + 1 + 8 + /* snapid, hash, is_max, pool */ | |
1696 | 4 + hoid->key_len + 4 + hoid->oid_len + 4 + hoid->nspace_len; | |
1697 | } | |
1698 | ||
1699 | static void encode_hoid(void **p, void *end, const struct ceph_hobject_id *hoid) | |
1700 | { | |
1701 | ceph_start_encoding(p, 4, 3, hoid_encoding_size(hoid)); | |
1702 | ceph_encode_string(p, end, hoid->key, hoid->key_len); | |
1703 | ceph_encode_string(p, end, hoid->oid, hoid->oid_len); | |
1704 | ceph_encode_64(p, hoid->snapid); | |
1705 | ceph_encode_32(p, hoid->hash); | |
1706 | ceph_encode_8(p, hoid->is_max); | |
1707 | ceph_encode_string(p, end, hoid->nspace, hoid->nspace_len); | |
1708 | ceph_encode_64(p, hoid->pool); | |
1709 | } | |
1710 | ||
1711 | static void free_hoid(struct ceph_hobject_id *hoid) | |
1712 | { | |
1713 | if (hoid) { | |
1714 | kfree(hoid->key); | |
1715 | kfree(hoid->oid); | |
1716 | kfree(hoid->nspace); | |
1717 | kfree(hoid); | |
1718 | } | |
1719 | } | |
1720 | ||
1721 | static struct ceph_osd_backoff *alloc_backoff(void) | |
1722 | { | |
1723 | struct ceph_osd_backoff *backoff; | |
1724 | ||
1725 | backoff = kzalloc(sizeof(*backoff), GFP_NOIO); | |
1726 | if (!backoff) | |
1727 | return NULL; | |
1728 | ||
1729 | RB_CLEAR_NODE(&backoff->spg_node); | |
1730 | RB_CLEAR_NODE(&backoff->id_node); | |
1731 | return backoff; | |
1732 | } | |
1733 | ||
1734 | static void free_backoff(struct ceph_osd_backoff *backoff) | |
1735 | { | |
1736 | WARN_ON(!RB_EMPTY_NODE(&backoff->spg_node)); | |
1737 | WARN_ON(!RB_EMPTY_NODE(&backoff->id_node)); | |
1738 | ||
1739 | free_hoid(backoff->begin); | |
1740 | free_hoid(backoff->end); | |
1741 | kfree(backoff); | |
1742 | } | |
1743 | ||
1744 | /* | |
1745 | * Within a specific spgid, backoffs are managed by ->begin hoid. | |
1746 | */ | |
1747 | DEFINE_RB_INSDEL_FUNCS2(backoff, struct ceph_osd_backoff, begin, hoid_compare, | |
1748 | RB_BYVAL, spg_node); | |
1749 | ||
1750 | static struct ceph_osd_backoff *lookup_containing_backoff(struct rb_root *root, | |
1751 | const struct ceph_hobject_id *hoid) | |
1752 | { | |
1753 | struct rb_node *n = root->rb_node; | |
1754 | ||
1755 | while (n) { | |
1756 | struct ceph_osd_backoff *cur = | |
1757 | rb_entry(n, struct ceph_osd_backoff, spg_node); | |
1758 | int cmp; | |
1759 | ||
1760 | cmp = hoid_compare(hoid, cur->begin); | |
1761 | if (cmp < 0) { | |
1762 | n = n->rb_left; | |
1763 | } else if (cmp > 0) { | |
1764 | if (hoid_compare(hoid, cur->end) < 0) | |
1765 | return cur; | |
1766 | ||
1767 | n = n->rb_right; | |
1768 | } else { | |
1769 | return cur; | |
1770 | } | |
1771 | } | |
1772 | ||
1773 | return NULL; | |
1774 | } | |
1775 | ||
1776 | /* | |
1777 | * Each backoff has a unique id within its OSD session. | |
1778 | */ | |
1779 | DEFINE_RB_FUNCS(backoff_by_id, struct ceph_osd_backoff, id, id_node) | |
1780 | ||
1781 | static void clear_backoffs(struct ceph_osd *osd) | |
1782 | { | |
1783 | while (!RB_EMPTY_ROOT(&osd->o_backoff_mappings)) { | |
1784 | struct ceph_spg_mapping *spg = | |
1785 | rb_entry(rb_first(&osd->o_backoff_mappings), | |
1786 | struct ceph_spg_mapping, node); | |
1787 | ||
1788 | while (!RB_EMPTY_ROOT(&spg->backoffs)) { | |
1789 | struct ceph_osd_backoff *backoff = | |
1790 | rb_entry(rb_first(&spg->backoffs), | |
1791 | struct ceph_osd_backoff, spg_node); | |
1792 | ||
1793 | erase_backoff(&spg->backoffs, backoff); | |
1794 | erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); | |
1795 | free_backoff(backoff); | |
1796 | } | |
1797 | erase_spg_mapping(&osd->o_backoff_mappings, spg); | |
1798 | free_spg_mapping(spg); | |
1799 | } | |
1800 | } | |
1801 | ||
1802 | /* | |
1803 | * Set up a temporary, non-owning view into @t. | |
1804 | */ | |
1805 | static void hoid_fill_from_target(struct ceph_hobject_id *hoid, | |
1806 | const struct ceph_osd_request_target *t) | |
1807 | { | |
1808 | hoid->key = NULL; | |
1809 | hoid->key_len = 0; | |
1810 | hoid->oid = t->target_oid.name; | |
1811 | hoid->oid_len = t->target_oid.name_len; | |
1812 | hoid->snapid = CEPH_NOSNAP; | |
1813 | hoid->hash = t->pgid.seed; | |
1814 | hoid->is_max = false; | |
1815 | if (t->target_oloc.pool_ns) { | |
1816 | hoid->nspace = t->target_oloc.pool_ns->str; | |
1817 | hoid->nspace_len = t->target_oloc.pool_ns->len; | |
1818 | } else { | |
1819 | hoid->nspace = NULL; | |
1820 | hoid->nspace_len = 0; | |
1821 | } | |
1822 | hoid->pool = t->target_oloc.pool; | |
1823 | ceph_hoid_build_hash_cache(hoid); | |
1824 | } | |
1825 | ||
1826 | static bool should_plug_request(struct ceph_osd_request *req) | |
1827 | { | |
1828 | struct ceph_osd *osd = req->r_osd; | |
1829 | struct ceph_spg_mapping *spg; | |
1830 | struct ceph_osd_backoff *backoff; | |
1831 | struct ceph_hobject_id hoid; | |
1832 | ||
1833 | spg = lookup_spg_mapping(&osd->o_backoff_mappings, &req->r_t.spgid); | |
1834 | if (!spg) | |
1835 | return false; | |
1836 | ||
1837 | hoid_fill_from_target(&hoid, &req->r_t); | |
1838 | backoff = lookup_containing_backoff(&spg->backoffs, &hoid); | |
1839 | if (!backoff) | |
1840 | return false; | |
1841 | ||
1842 | dout("%s req %p tid %llu backoff osd%d spgid %llu.%xs%d id %llu\n", | |
1843 | __func__, req, req->r_tid, osd->o_osd, backoff->spgid.pgid.pool, | |
1844 | backoff->spgid.pgid.seed, backoff->spgid.shard, backoff->id); | |
1845 | return true; | |
1846 | } | |
1847 | ||
bb873b53 ID |
1848 | static void setup_request_data(struct ceph_osd_request *req, |
1849 | struct ceph_msg *msg) | |
f24e9980 | 1850 | { |
bb873b53 ID |
1851 | u32 data_len = 0; |
1852 | int i; | |
1853 | ||
1854 | if (!list_empty(&msg->data)) | |
1855 | return; | |
f24e9980 | 1856 | |
bb873b53 ID |
1857 | WARN_ON(msg->data_length); |
1858 | for (i = 0; i < req->r_num_ops; i++) { | |
1859 | struct ceph_osd_req_op *op = &req->r_ops[i]; | |
1860 | ||
1861 | switch (op->op) { | |
1862 | /* request */ | |
1863 | case CEPH_OSD_OP_WRITE: | |
1864 | case CEPH_OSD_OP_WRITEFULL: | |
1865 | WARN_ON(op->indata_len != op->extent.length); | |
1866 | ceph_osdc_msg_data_add(msg, &op->extent.osd_data); | |
1867 | break; | |
1868 | case CEPH_OSD_OP_SETXATTR: | |
1869 | case CEPH_OSD_OP_CMPXATTR: | |
1870 | WARN_ON(op->indata_len != op->xattr.name_len + | |
1871 | op->xattr.value_len); | |
1872 | ceph_osdc_msg_data_add(msg, &op->xattr.osd_data); | |
1873 | break; | |
922dab61 ID |
1874 | case CEPH_OSD_OP_NOTIFY_ACK: |
1875 | ceph_osdc_msg_data_add(msg, | |
1876 | &op->notify_ack.request_data); | |
1877 | break; | |
bb873b53 ID |
1878 | |
1879 | /* reply */ | |
1880 | case CEPH_OSD_OP_STAT: | |
1881 | ceph_osdc_msg_data_add(req->r_reply, | |
1882 | &op->raw_data_in); | |
1883 | break; | |
1884 | case CEPH_OSD_OP_READ: | |
1885 | ceph_osdc_msg_data_add(req->r_reply, | |
1886 | &op->extent.osd_data); | |
1887 | break; | |
a4ed38d7 DF |
1888 | case CEPH_OSD_OP_LIST_WATCHERS: |
1889 | ceph_osdc_msg_data_add(req->r_reply, | |
1890 | &op->list_watchers.response_data); | |
1891 | break; | |
bb873b53 ID |
1892 | |
1893 | /* both */ | |
1894 | case CEPH_OSD_OP_CALL: | |
1895 | WARN_ON(op->indata_len != op->cls.class_len + | |
1896 | op->cls.method_len + | |
1897 | op->cls.indata_len); | |
1898 | ceph_osdc_msg_data_add(msg, &op->cls.request_info); | |
1899 | /* optional, can be NONE */ | |
1900 | ceph_osdc_msg_data_add(msg, &op->cls.request_data); | |
1901 | /* optional, can be NONE */ | |
1902 | ceph_osdc_msg_data_add(req->r_reply, | |
1903 | &op->cls.response_data); | |
1904 | break; | |
19079203 ID |
1905 | case CEPH_OSD_OP_NOTIFY: |
1906 | ceph_osdc_msg_data_add(msg, | |
1907 | &op->notify.request_data); | |
1908 | ceph_osdc_msg_data_add(req->r_reply, | |
1909 | &op->notify.response_data); | |
1910 | break; | |
bb873b53 ID |
1911 | } |
1912 | ||
1913 | data_len += op->indata_len; | |
1914 | } | |
1b83bef2 | 1915 | |
bb873b53 ID |
1916 | WARN_ON(data_len != msg->data_length); |
1917 | } | |
1918 | ||
2e59ffd1 ID |
1919 | static void encode_pgid(void **p, const struct ceph_pg *pgid) |
1920 | { | |
1921 | ceph_encode_8(p, 1); | |
1922 | ceph_encode_64(p, pgid->pool); | |
1923 | ceph_encode_32(p, pgid->seed); | |
1924 | ceph_encode_32(p, -1); /* preferred */ | |
1925 | } | |
1926 | ||
8cb441c0 ID |
1927 | static void encode_spgid(void **p, const struct ceph_spg *spgid) |
1928 | { | |
1929 | ceph_start_encoding(p, 1, 1, CEPH_PGID_ENCODING_LEN + 1); | |
1930 | encode_pgid(p, &spgid->pgid); | |
1931 | ceph_encode_8(p, spgid->shard); | |
1932 | } | |
1933 | ||
2e59ffd1 ID |
1934 | static void encode_oloc(void **p, void *end, |
1935 | const struct ceph_object_locator *oloc) | |
1936 | { | |
1937 | ceph_start_encoding(p, 5, 4, ceph_oloc_encoding_size(oloc)); | |
1938 | ceph_encode_64(p, oloc->pool); | |
1939 | ceph_encode_32(p, -1); /* preferred */ | |
1940 | ceph_encode_32(p, 0); /* key len */ | |
1941 | if (oloc->pool_ns) | |
1942 | ceph_encode_string(p, end, oloc->pool_ns->str, | |
1943 | oloc->pool_ns->len); | |
1944 | else | |
1945 | ceph_encode_32(p, 0); | |
1946 | } | |
1947 | ||
8cb441c0 ID |
1948 | static void encode_request_partial(struct ceph_osd_request *req, |
1949 | struct ceph_msg *msg) | |
bb873b53 ID |
1950 | { |
1951 | void *p = msg->front.iov_base; | |
1952 | void *const end = p + msg->front_alloc_len; | |
1953 | u32 data_len = 0; | |
1954 | int i; | |
1955 | ||
1956 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) { | |
1957 | /* snapshots aren't writeable */ | |
1958 | WARN_ON(req->r_snapid != CEPH_NOSNAP); | |
1959 | } else { | |
1960 | WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || | |
1961 | req->r_data_offset || req->r_snapc); | |
1962 | } | |
1963 | ||
1964 | setup_request_data(req, msg); | |
1965 | ||
8cb441c0 ID |
1966 | encode_spgid(&p, &req->r_t.spgid); /* actual spg */ |
1967 | ceph_encode_32(&p, req->r_t.pgid.seed); /* raw hash */ | |
bb873b53 ID |
1968 | ceph_encode_32(&p, req->r_osdc->osdmap->epoch); |
1969 | ceph_encode_32(&p, req->r_flags); | |
8cb441c0 ID |
1970 | |
1971 | /* reqid */ | |
1972 | ceph_start_encoding(&p, 2, 2, sizeof(struct ceph_osd_reqid)); | |
1973 | memset(p, 0, sizeof(struct ceph_osd_reqid)); | |
1974 | p += sizeof(struct ceph_osd_reqid); | |
1975 | ||
1976 | /* trace */ | |
1977 | memset(p, 0, sizeof(struct ceph_blkin_trace_info)); | |
1978 | p += sizeof(struct ceph_blkin_trace_info); | |
1979 | ||
1980 | ceph_encode_32(&p, 0); /* client_inc, always 0 */ | |
fac02ddf | 1981 | ceph_encode_timespec64(p, &req->r_mtime); |
bb873b53 | 1982 | p += sizeof(struct ceph_timespec); |
aa26d662 | 1983 | |
2e59ffd1 | 1984 | encode_oloc(&p, end, &req->r_t.target_oloc); |
2e59ffd1 ID |
1985 | ceph_encode_string(&p, end, req->r_t.target_oid.name, |
1986 | req->r_t.target_oid.name_len); | |
f24e9980 | 1987 | |
bb873b53 ID |
1988 | /* ops, can imply data */ |
1989 | ceph_encode_16(&p, req->r_num_ops); | |
1990 | for (i = 0; i < req->r_num_ops; i++) { | |
1991 | data_len += osd_req_encode_op(p, &req->r_ops[i]); | |
1992 | p += sizeof(struct ceph_osd_op); | |
1993 | } | |
26be8808 | 1994 | |
bb873b53 ID |
1995 | ceph_encode_64(&p, req->r_snapid); /* snapid */ |
1996 | if (req->r_snapc) { | |
1997 | ceph_encode_64(&p, req->r_snapc->seq); | |
1998 | ceph_encode_32(&p, req->r_snapc->num_snaps); | |
1999 | for (i = 0; i < req->r_snapc->num_snaps; i++) | |
2000 | ceph_encode_64(&p, req->r_snapc->snaps[i]); | |
2001 | } else { | |
2002 | ceph_encode_64(&p, 0); /* snap_seq */ | |
2003 | ceph_encode_32(&p, 0); /* snaps len */ | |
2004 | } | |
2005 | ||
2006 | ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ | |
986e8989 | 2007 | BUG_ON(p > end - 8); /* space for features */ |
bb873b53 | 2008 | |
8cb441c0 ID |
2009 | msg->hdr.version = cpu_to_le16(8); /* MOSDOp v8 */ |
2010 | /* front_len is finalized in encode_request_finish() */ | |
986e8989 ID |
2011 | msg->front.iov_len = p - msg->front.iov_base; |
2012 | msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); | |
bb873b53 ID |
2013 | msg->hdr.data_len = cpu_to_le32(data_len); |
2014 | /* | |
2015 | * The header "data_off" is a hint to the receiver allowing it | |
2016 | * to align received data into its buffers such that there's no | |
2017 | * need to re-copy it before writing it to disk (direct I/O). | |
2018 | */ | |
2019 | msg->hdr.data_off = cpu_to_le16(req->r_data_offset); | |
26be8808 | 2020 | |
8cb441c0 ID |
2021 | dout("%s req %p msg %p oid %s oid_len %d\n", __func__, req, msg, |
2022 | req->r_t.target_oid.name, req->r_t.target_oid.name_len); | |
2023 | } | |
2024 | ||
2025 | static void encode_request_finish(struct ceph_msg *msg) | |
2026 | { | |
2027 | void *p = msg->front.iov_base; | |
986e8989 | 2028 | void *const partial_end = p + msg->front.iov_len; |
8cb441c0 ID |
2029 | void *const end = p + msg->front_alloc_len; |
2030 | ||
2031 | if (CEPH_HAVE_FEATURE(msg->con->peer_features, RESEND_ON_SPLIT)) { | |
2032 | /* luminous OSD -- encode features and be done */ | |
986e8989 | 2033 | p = partial_end; |
8cb441c0 ID |
2034 | ceph_encode_64(&p, msg->con->peer_features); |
2035 | } else { | |
2036 | struct { | |
2037 | char spgid[CEPH_ENCODING_START_BLK_LEN + | |
2038 | CEPH_PGID_ENCODING_LEN + 1]; | |
2039 | __le32 hash; | |
2040 | __le32 epoch; | |
2041 | __le32 flags; | |
2042 | char reqid[CEPH_ENCODING_START_BLK_LEN + | |
2043 | sizeof(struct ceph_osd_reqid)]; | |
2044 | char trace[sizeof(struct ceph_blkin_trace_info)]; | |
2045 | __le32 client_inc; | |
2046 | struct ceph_timespec mtime; | |
2047 | } __packed head; | |
2048 | struct ceph_pg pgid; | |
2049 | void *oloc, *oid, *tail; | |
2050 | int oloc_len, oid_len, tail_len; | |
2051 | int len; | |
2052 | ||
2053 | /* | |
2054 | * Pre-luminous OSD -- reencode v8 into v4 using @head | |
2055 | * as a temporary buffer. Encode the raw PG; the rest | |
2056 | * is just a matter of moving oloc, oid and tail blobs | |
2057 | * around. | |
2058 | */ | |
2059 | memcpy(&head, p, sizeof(head)); | |
2060 | p += sizeof(head); | |
2061 | ||
2062 | oloc = p; | |
2063 | p += CEPH_ENCODING_START_BLK_LEN; | |
2064 | pgid.pool = ceph_decode_64(&p); | |
2065 | p += 4 + 4; /* preferred, key len */ | |
2066 | len = ceph_decode_32(&p); | |
2067 | p += len; /* nspace */ | |
2068 | oloc_len = p - oloc; | |
2069 | ||
2070 | oid = p; | |
2071 | len = ceph_decode_32(&p); | |
2072 | p += len; | |
2073 | oid_len = p - oid; | |
2074 | ||
2075 | tail = p; | |
986e8989 | 2076 | tail_len = partial_end - p; |
8cb441c0 ID |
2077 | |
2078 | p = msg->front.iov_base; | |
2079 | ceph_encode_copy(&p, &head.client_inc, sizeof(head.client_inc)); | |
2080 | ceph_encode_copy(&p, &head.epoch, sizeof(head.epoch)); | |
2081 | ceph_encode_copy(&p, &head.flags, sizeof(head.flags)); | |
2082 | ceph_encode_copy(&p, &head.mtime, sizeof(head.mtime)); | |
2083 | ||
2084 | /* reassert_version */ | |
2085 | memset(p, 0, sizeof(struct ceph_eversion)); | |
2086 | p += sizeof(struct ceph_eversion); | |
2087 | ||
2088 | BUG_ON(p >= oloc); | |
2089 | memmove(p, oloc, oloc_len); | |
2090 | p += oloc_len; | |
2091 | ||
2092 | pgid.seed = le32_to_cpu(head.hash); | |
2093 | encode_pgid(&p, &pgid); /* raw pg */ | |
2094 | ||
2095 | BUG_ON(p >= oid); | |
2096 | memmove(p, oid, oid_len); | |
2097 | p += oid_len; | |
2098 | ||
2099 | /* tail -- ops, snapid, snapc, retry_attempt */ | |
2100 | BUG_ON(p >= tail); | |
2101 | memmove(p, tail, tail_len); | |
2102 | p += tail_len; | |
2103 | ||
2104 | msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ | |
2105 | } | |
2106 | ||
2107 | BUG_ON(p > end); | |
2108 | msg->front.iov_len = p - msg->front.iov_base; | |
2109 | msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); | |
2110 | ||
2111 | dout("%s msg %p tid %llu %u+%u+%u v%d\n", __func__, msg, | |
2112 | le64_to_cpu(msg->hdr.tid), le32_to_cpu(msg->hdr.front_len), | |
2113 | le32_to_cpu(msg->hdr.middle_len), le32_to_cpu(msg->hdr.data_len), | |
2114 | le16_to_cpu(msg->hdr.version)); | |
bb873b53 ID |
2115 | } |
2116 | ||
2117 | /* | |
2118 | * @req has to be assigned a tid and registered. | |
2119 | */ | |
2120 | static void send_request(struct ceph_osd_request *req) | |
2121 | { | |
2122 | struct ceph_osd *osd = req->r_osd; | |
2123 | ||
5aea3dcd | 2124 | verify_osd_locked(osd); |
bb873b53 ID |
2125 | WARN_ON(osd->o_osd != req->r_t.osd); |
2126 | ||
a02a946d ID |
2127 | /* backoff? */ |
2128 | if (should_plug_request(req)) | |
2129 | return; | |
2130 | ||
5aea3dcd ID |
2131 | /* |
2132 | * We may have a previously queued request message hanging | |
2133 | * around. Cancel it to avoid corrupting the msgr. | |
2134 | */ | |
2135 | if (req->r_sent) | |
2136 | ceph_msg_revoke(req->r_request); | |
2137 | ||
bb873b53 ID |
2138 | req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; |
2139 | if (req->r_attempts) | |
2140 | req->r_flags |= CEPH_OSD_FLAG_RETRY; | |
2141 | else | |
2142 | WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); | |
2143 | ||
8cb441c0 | 2144 | encode_request_partial(req, req->r_request); |
bb873b53 | 2145 | |
04c7d789 | 2146 | 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 | 2147 | __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, |
dc98ff72 | 2148 | req->r_t.spgid.pgid.pool, req->r_t.spgid.pgid.seed, |
04c7d789 ID |
2149 | req->r_t.spgid.shard, osd->o_osd, req->r_t.epoch, req->r_flags, |
2150 | req->r_attempts); | |
bb873b53 ID |
2151 | |
2152 | req->r_t.paused = false; | |
2153 | req->r_stamp = jiffies; | |
2154 | req->r_attempts++; | |
2155 | ||
2156 | req->r_sent = osd->o_incarnation; | |
2157 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); | |
2158 | ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); | |
f24e9980 SW |
2159 | } |
2160 | ||
42c1b124 ID |
2161 | static void maybe_request_map(struct ceph_osd_client *osdc) |
2162 | { | |
2163 | bool continuous = false; | |
2164 | ||
5aea3dcd | 2165 | verify_osdc_locked(osdc); |
42c1b124 ID |
2166 | WARN_ON(!osdc->osdmap->epoch); |
2167 | ||
b7ec35b3 ID |
2168 | if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || |
2169 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || | |
2170 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { | |
42c1b124 ID |
2171 | dout("%s osdc %p continuous\n", __func__, osdc); |
2172 | continuous = true; | |
2173 | } else { | |
2174 | dout("%s osdc %p onetime\n", __func__, osdc); | |
2175 | } | |
2176 | ||
2177 | if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, | |
2178 | osdc->osdmap->epoch + 1, continuous)) | |
2179 | ceph_monc_renew_subs(&osdc->client->monc); | |
2180 | } | |
2181 | ||
a1f4020a | 2182 | static void complete_request(struct ceph_osd_request *req, int err); |
4609245e ID |
2183 | static void send_map_check(struct ceph_osd_request *req); |
2184 | ||
5aea3dcd | 2185 | static void __submit_request(struct ceph_osd_request *req, bool wrlocked) |
0bbfdfe8 | 2186 | { |
5aea3dcd ID |
2187 | struct ceph_osd_client *osdc = req->r_osdc; |
2188 | struct ceph_osd *osd; | |
4609245e | 2189 | enum calc_target_result ct_res; |
66850df5 | 2190 | int err = 0; |
5aea3dcd ID |
2191 | bool need_send = false; |
2192 | bool promoted = false; | |
0bbfdfe8 | 2193 | |
b18b9550 | 2194 | WARN_ON(req->r_tid); |
5aea3dcd ID |
2195 | dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); |
2196 | ||
2197 | again: | |
7de030d6 | 2198 | ct_res = calc_target(osdc, &req->r_t, NULL, false); |
4609245e ID |
2199 | if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) |
2200 | goto promote; | |
2201 | ||
5aea3dcd ID |
2202 | osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); |
2203 | if (IS_ERR(osd)) { | |
2204 | WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); | |
2205 | goto promote; | |
0bbfdfe8 ID |
2206 | } |
2207 | ||
66850df5 ID |
2208 | if (osdc->abort_err) { |
2209 | dout("req %p abort_err %d\n", req, osdc->abort_err); | |
2210 | err = osdc->abort_err; | |
2211 | } else if (osdc->osdmap->epoch < osdc->epoch_barrier) { | |
58eb7932 JL |
2212 | dout("req %p epoch %u barrier %u\n", req, osdc->osdmap->epoch, |
2213 | osdc->epoch_barrier); | |
2214 | req->r_t.paused = true; | |
2215 | maybe_request_map(osdc); | |
2216 | } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && | |
2217 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { | |
5aea3dcd ID |
2218 | dout("req %p pausewr\n", req); |
2219 | req->r_t.paused = true; | |
2220 | maybe_request_map(osdc); | |
2221 | } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && | |
b7ec35b3 | 2222 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { |
5aea3dcd ID |
2223 | dout("req %p pauserd\n", req); |
2224 | req->r_t.paused = true; | |
2225 | maybe_request_map(osdc); | |
2226 | } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && | |
2227 | !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | | |
2228 | CEPH_OSD_FLAG_FULL_FORCE)) && | |
b7ec35b3 | 2229 | (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || |
5aea3dcd ID |
2230 | pool_full(osdc, req->r_t.base_oloc.pool))) { |
2231 | dout("req %p full/pool_full\n", req); | |
c843d13c | 2232 | if (osdc->abort_on_full) { |
66850df5 | 2233 | err = -ENOSPC; |
29e87820 ID |
2234 | } else { |
2235 | pr_warn_ratelimited("FULL or reached pool quota\n"); | |
2236 | req->r_t.paused = true; | |
2237 | maybe_request_map(osdc); | |
2238 | } | |
5aea3dcd ID |
2239 | } else if (!osd_homeless(osd)) { |
2240 | need_send = true; | |
0bbfdfe8 | 2241 | } else { |
5aea3dcd | 2242 | maybe_request_map(osdc); |
0bbfdfe8 ID |
2243 | } |
2244 | ||
5aea3dcd ID |
2245 | mutex_lock(&osd->lock); |
2246 | /* | |
2247 | * Assign the tid atomically with send_request() to protect | |
2248 | * multiple writes to the same object from racing with each | |
2249 | * other, resulting in out of order ops on the OSDs. | |
2250 | */ | |
2251 | req->r_tid = atomic64_inc_return(&osdc->last_tid); | |
2252 | link_request(osd, req); | |
2253 | if (need_send) | |
2254 | send_request(req); | |
66850df5 ID |
2255 | else if (err) |
2256 | complete_request(req, err); | |
5aea3dcd ID |
2257 | mutex_unlock(&osd->lock); |
2258 | ||
6001567c | 2259 | if (!err && ct_res == CALC_TARGET_POOL_DNE) |
4609245e ID |
2260 | send_map_check(req); |
2261 | ||
5aea3dcd ID |
2262 | if (promoted) |
2263 | downgrade_write(&osdc->lock); | |
2264 | return; | |
2265 | ||
2266 | promote: | |
2267 | up_read(&osdc->lock); | |
2268 | down_write(&osdc->lock); | |
2269 | wrlocked = true; | |
2270 | promoted = true; | |
2271 | goto again; | |
2272 | } | |
2273 | ||
2274 | static void account_request(struct ceph_osd_request *req) | |
2275 | { | |
54ea0046 | 2276 | WARN_ON(req->r_flags & (CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK)); |
b18b9550 | 2277 | WARN_ON(!(req->r_flags & (CEPH_OSD_FLAG_READ | CEPH_OSD_FLAG_WRITE))); |
5aea3dcd | 2278 | |
b18b9550 | 2279 | req->r_flags |= CEPH_OSD_FLAG_ONDISK; |
5aea3dcd | 2280 | atomic_inc(&req->r_osdc->num_requests); |
7cc5e38f ID |
2281 | |
2282 | req->r_start_stamp = jiffies; | |
5aea3dcd ID |
2283 | } |
2284 | ||
2285 | static void submit_request(struct ceph_osd_request *req, bool wrlocked) | |
2286 | { | |
2287 | ceph_osdc_get_request(req); | |
2288 | account_request(req); | |
2289 | __submit_request(req, wrlocked); | |
2290 | } | |
2291 | ||
45ee2c1d | 2292 | static void finish_request(struct ceph_osd_request *req) |
5aea3dcd ID |
2293 | { |
2294 | struct ceph_osd_client *osdc = req->r_osdc; | |
5aea3dcd | 2295 | |
04c7d789 | 2296 | WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); |
5aea3dcd ID |
2297 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); |
2298 | ||
04c7d789 ID |
2299 | if (req->r_osd) |
2300 | unlink_request(req->r_osd, req); | |
5aea3dcd ID |
2301 | atomic_dec(&osdc->num_requests); |
2302 | ||
2303 | /* | |
2304 | * If an OSD has failed or returned and a request has been sent | |
2305 | * twice, it's possible to get a reply and end up here while the | |
2306 | * request message is queued for delivery. We will ignore the | |
2307 | * reply, so not a big deal, but better to try and catch it. | |
2308 | */ | |
2309 | ceph_msg_revoke(req->r_request); | |
2310 | ceph_msg_revoke_incoming(req->r_reply); | |
2311 | } | |
2312 | ||
fe5da05e ID |
2313 | static void __complete_request(struct ceph_osd_request *req) |
2314 | { | |
26df726b ID |
2315 | dout("%s req %p tid %llu cb %pf result %d\n", __func__, req, |
2316 | req->r_tid, req->r_callback, req->r_result); | |
2317 | ||
2318 | if (req->r_callback) | |
fe5da05e | 2319 | req->r_callback(req); |
26df726b ID |
2320 | complete_all(&req->r_completion); |
2321 | ceph_osdc_put_request(req); | |
fe5da05e ID |
2322 | } |
2323 | ||
88bc1922 ID |
2324 | static void complete_request_workfn(struct work_struct *work) |
2325 | { | |
2326 | struct ceph_osd_request *req = | |
2327 | container_of(work, struct ceph_osd_request, r_complete_work); | |
2328 | ||
2329 | __complete_request(req); | |
fe5da05e ID |
2330 | } |
2331 | ||
4609245e | 2332 | /* |
b18b9550 | 2333 | * This is open-coded in handle_reply(). |
4609245e ID |
2334 | */ |
2335 | static void complete_request(struct ceph_osd_request *req, int err) | |
2336 | { | |
2337 | dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); | |
2338 | ||
2339 | req->r_result = err; | |
45ee2c1d | 2340 | finish_request(req); |
88bc1922 ID |
2341 | |
2342 | INIT_WORK(&req->r_complete_work, complete_request_workfn); | |
2343 | queue_work(req->r_osdc->completion_wq, &req->r_complete_work); | |
4609245e ID |
2344 | } |
2345 | ||
2346 | static void cancel_map_check(struct ceph_osd_request *req) | |
2347 | { | |
2348 | struct ceph_osd_client *osdc = req->r_osdc; | |
2349 | struct ceph_osd_request *lookup_req; | |
2350 | ||
2351 | verify_osdc_wrlocked(osdc); | |
2352 | ||
2353 | lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); | |
2354 | if (!lookup_req) | |
2355 | return; | |
2356 | ||
2357 | WARN_ON(lookup_req != req); | |
2358 | erase_request_mc(&osdc->map_checks, req); | |
2359 | ceph_osdc_put_request(req); | |
2360 | } | |
2361 | ||
5aea3dcd ID |
2362 | static void cancel_request(struct ceph_osd_request *req) |
2363 | { | |
2364 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); | |
2365 | ||
4609245e | 2366 | cancel_map_check(req); |
45ee2c1d | 2367 | finish_request(req); |
b18b9550 | 2368 | complete_all(&req->r_completion); |
c297eb42 | 2369 | ceph_osdc_put_request(req); |
5aea3dcd ID |
2370 | } |
2371 | ||
7cc5e38f ID |
2372 | static void abort_request(struct ceph_osd_request *req, int err) |
2373 | { | |
2374 | dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); | |
2375 | ||
2376 | cancel_map_check(req); | |
2377 | complete_request(req, err); | |
2378 | } | |
2379 | ||
66850df5 ID |
2380 | static int abort_fn(struct ceph_osd_request *req, void *arg) |
2381 | { | |
2382 | int err = *(int *)arg; | |
2383 | ||
2384 | abort_request(req, err); | |
2385 | return 0; /* continue iteration */ | |
2386 | } | |
2387 | ||
2388 | /* | |
2389 | * Abort all in-flight requests with @err and arrange for all future | |
2390 | * requests to be failed immediately. | |
2391 | */ | |
2392 | void ceph_osdc_abort_requests(struct ceph_osd_client *osdc, int err) | |
2393 | { | |
2394 | dout("%s osdc %p err %d\n", __func__, osdc, err); | |
2395 | down_write(&osdc->lock); | |
2396 | for_each_request(osdc, abort_fn, &err); | |
2397 | osdc->abort_err = err; | |
2398 | up_write(&osdc->lock); | |
2399 | } | |
2400 | EXPORT_SYMBOL(ceph_osdc_abort_requests); | |
2401 | ||
58eb7932 JL |
2402 | static void update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) |
2403 | { | |
2404 | if (likely(eb > osdc->epoch_barrier)) { | |
2405 | dout("updating epoch_barrier from %u to %u\n", | |
2406 | osdc->epoch_barrier, eb); | |
2407 | osdc->epoch_barrier = eb; | |
2408 | /* Request map if we're not to the barrier yet */ | |
2409 | if (eb > osdc->osdmap->epoch) | |
2410 | maybe_request_map(osdc); | |
2411 | } | |
2412 | } | |
2413 | ||
2414 | void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) | |
2415 | { | |
2416 | down_read(&osdc->lock); | |
2417 | if (unlikely(eb > osdc->epoch_barrier)) { | |
2418 | up_read(&osdc->lock); | |
2419 | down_write(&osdc->lock); | |
2420 | update_epoch_barrier(osdc, eb); | |
2421 | up_write(&osdc->lock); | |
2422 | } else { | |
2423 | up_read(&osdc->lock); | |
2424 | } | |
2425 | } | |
2426 | EXPORT_SYMBOL(ceph_osdc_update_epoch_barrier); | |
2427 | ||
4eea0fef ID |
2428 | /* |
2429 | * We can end up releasing caps as a result of abort_request(). | |
2430 | * In that case, we probably want to ensure that the cap release message | |
2431 | * has an updated epoch barrier in it, so set the epoch barrier prior to | |
2432 | * aborting the first request. | |
2433 | */ | |
2434 | static int abort_on_full_fn(struct ceph_osd_request *req, void *arg) | |
2435 | { | |
2436 | struct ceph_osd_client *osdc = req->r_osdc; | |
2437 | bool *victims = arg; | |
2438 | ||
c843d13c | 2439 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && |
4eea0fef | 2440 | (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || |
690f951d | 2441 | pool_full(osdc, req->r_t.base_oloc.pool))) { |
4eea0fef ID |
2442 | if (!*victims) { |
2443 | update_epoch_barrier(osdc, osdc->osdmap->epoch); | |
2444 | *victims = true; | |
2445 | } | |
2446 | abort_request(req, -ENOSPC); | |
2447 | } | |
2448 | ||
2449 | return 0; /* continue iteration */ | |
2450 | } | |
2451 | ||
fc36d0a4 JL |
2452 | /* |
2453 | * Drop all pending requests that are stalled waiting on a full condition to | |
58eb7932 JL |
2454 | * clear, and complete them with ENOSPC as the return code. Set the |
2455 | * osdc->epoch_barrier to the latest map epoch that we've seen if any were | |
2456 | * cancelled. | |
fc36d0a4 JL |
2457 | */ |
2458 | static void ceph_osdc_abort_on_full(struct ceph_osd_client *osdc) | |
2459 | { | |
58eb7932 | 2460 | bool victims = false; |
fc36d0a4 | 2461 | |
c843d13c ID |
2462 | if (osdc->abort_on_full && |
2463 | (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || have_pool_full(osdc))) | |
4eea0fef | 2464 | for_each_request(osdc, abort_on_full_fn, &victims); |
fc36d0a4 JL |
2465 | } |
2466 | ||
4609245e ID |
2467 | static void check_pool_dne(struct ceph_osd_request *req) |
2468 | { | |
2469 | struct ceph_osd_client *osdc = req->r_osdc; | |
2470 | struct ceph_osdmap *map = osdc->osdmap; | |
2471 | ||
2472 | verify_osdc_wrlocked(osdc); | |
2473 | WARN_ON(!map->epoch); | |
2474 | ||
2475 | if (req->r_attempts) { | |
2476 | /* | |
2477 | * We sent a request earlier, which means that | |
2478 | * previously the pool existed, and now it does not | |
2479 | * (i.e., it was deleted). | |
2480 | */ | |
2481 | req->r_map_dne_bound = map->epoch; | |
2482 | dout("%s req %p tid %llu pool disappeared\n", __func__, req, | |
2483 | req->r_tid); | |
2484 | } else { | |
2485 | dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, | |
2486 | req, req->r_tid, req->r_map_dne_bound, map->epoch); | |
2487 | } | |
2488 | ||
2489 | if (req->r_map_dne_bound) { | |
2490 | if (map->epoch >= req->r_map_dne_bound) { | |
2491 | /* we had a new enough map */ | |
2492 | pr_info_ratelimited("tid %llu pool does not exist\n", | |
2493 | req->r_tid); | |
2494 | complete_request(req, -ENOENT); | |
2495 | } | |
2496 | } else { | |
2497 | send_map_check(req); | |
2498 | } | |
2499 | } | |
2500 | ||
2501 | static void map_check_cb(struct ceph_mon_generic_request *greq) | |
2502 | { | |
2503 | struct ceph_osd_client *osdc = &greq->monc->client->osdc; | |
2504 | struct ceph_osd_request *req; | |
2505 | u64 tid = greq->private_data; | |
2506 | ||
2507 | WARN_ON(greq->result || !greq->u.newest); | |
2508 | ||
2509 | down_write(&osdc->lock); | |
2510 | req = lookup_request_mc(&osdc->map_checks, tid); | |
2511 | if (!req) { | |
2512 | dout("%s tid %llu dne\n", __func__, tid); | |
2513 | goto out_unlock; | |
2514 | } | |
2515 | ||
2516 | dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, | |
2517 | req, req->r_tid, req->r_map_dne_bound, greq->u.newest); | |
2518 | if (!req->r_map_dne_bound) | |
2519 | req->r_map_dne_bound = greq->u.newest; | |
2520 | erase_request_mc(&osdc->map_checks, req); | |
2521 | check_pool_dne(req); | |
2522 | ||
2523 | ceph_osdc_put_request(req); | |
2524 | out_unlock: | |
2525 | up_write(&osdc->lock); | |
2526 | } | |
2527 | ||
2528 | static void send_map_check(struct ceph_osd_request *req) | |
2529 | { | |
2530 | struct ceph_osd_client *osdc = req->r_osdc; | |
2531 | struct ceph_osd_request *lookup_req; | |
2532 | int ret; | |
2533 | ||
2534 | verify_osdc_wrlocked(osdc); | |
2535 | ||
2536 | lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); | |
2537 | if (lookup_req) { | |
2538 | WARN_ON(lookup_req != req); | |
2539 | return; | |
2540 | } | |
2541 | ||
2542 | ceph_osdc_get_request(req); | |
2543 | insert_request_mc(&osdc->map_checks, req); | |
2544 | ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", | |
2545 | map_check_cb, req->r_tid); | |
2546 | WARN_ON(ret); | |
2547 | } | |
2548 | ||
922dab61 ID |
2549 | /* |
2550 | * lingering requests, watch/notify v2 infrastructure | |
2551 | */ | |
2552 | static void linger_release(struct kref *kref) | |
2553 | { | |
2554 | struct ceph_osd_linger_request *lreq = | |
2555 | container_of(kref, struct ceph_osd_linger_request, kref); | |
2556 | ||
2557 | dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, | |
2558 | lreq->reg_req, lreq->ping_req); | |
2559 | WARN_ON(!RB_EMPTY_NODE(&lreq->node)); | |
2560 | WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); | |
4609245e | 2561 | WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); |
922dab61 | 2562 | WARN_ON(!list_empty(&lreq->scan_item)); |
b07d3c4b | 2563 | WARN_ON(!list_empty(&lreq->pending_lworks)); |
922dab61 ID |
2564 | WARN_ON(lreq->osd); |
2565 | ||
2566 | if (lreq->reg_req) | |
2567 | ceph_osdc_put_request(lreq->reg_req); | |
2568 | if (lreq->ping_req) | |
2569 | ceph_osdc_put_request(lreq->ping_req); | |
2570 | target_destroy(&lreq->t); | |
2571 | kfree(lreq); | |
2572 | } | |
2573 | ||
2574 | static void linger_put(struct ceph_osd_linger_request *lreq) | |
2575 | { | |
2576 | if (lreq) | |
2577 | kref_put(&lreq->kref, linger_release); | |
2578 | } | |
2579 | ||
2580 | static struct ceph_osd_linger_request * | |
2581 | linger_get(struct ceph_osd_linger_request *lreq) | |
2582 | { | |
2583 | kref_get(&lreq->kref); | |
2584 | return lreq; | |
2585 | } | |
2586 | ||
2587 | static struct ceph_osd_linger_request * | |
2588 | linger_alloc(struct ceph_osd_client *osdc) | |
2589 | { | |
2590 | struct ceph_osd_linger_request *lreq; | |
2591 | ||
2592 | lreq = kzalloc(sizeof(*lreq), GFP_NOIO); | |
2593 | if (!lreq) | |
2594 | return NULL; | |
2595 | ||
2596 | kref_init(&lreq->kref); | |
2597 | mutex_init(&lreq->lock); | |
2598 | RB_CLEAR_NODE(&lreq->node); | |
2599 | RB_CLEAR_NODE(&lreq->osdc_node); | |
4609245e | 2600 | RB_CLEAR_NODE(&lreq->mc_node); |
922dab61 | 2601 | INIT_LIST_HEAD(&lreq->scan_item); |
b07d3c4b | 2602 | INIT_LIST_HEAD(&lreq->pending_lworks); |
922dab61 | 2603 | init_completion(&lreq->reg_commit_wait); |
19079203 | 2604 | init_completion(&lreq->notify_finish_wait); |
922dab61 ID |
2605 | |
2606 | lreq->osdc = osdc; | |
2607 | target_init(&lreq->t); | |
2608 | ||
2609 | dout("%s lreq %p\n", __func__, lreq); | |
2610 | return lreq; | |
2611 | } | |
2612 | ||
2613 | DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) | |
2614 | DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) | |
4609245e | 2615 | DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) |
922dab61 ID |
2616 | |
2617 | /* | |
2618 | * Create linger request <-> OSD session relation. | |
2619 | * | |
2620 | * @lreq has to be registered, @osd may be homeless. | |
2621 | */ | |
2622 | static void link_linger(struct ceph_osd *osd, | |
2623 | struct ceph_osd_linger_request *lreq) | |
2624 | { | |
2625 | verify_osd_locked(osd); | |
2626 | WARN_ON(!lreq->linger_id || lreq->osd); | |
2627 | dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, | |
2628 | osd->o_osd, lreq, lreq->linger_id); | |
2629 | ||
2630 | if (!osd_homeless(osd)) | |
2631 | __remove_osd_from_lru(osd); | |
2632 | else | |
2633 | atomic_inc(&osd->o_osdc->num_homeless); | |
2634 | ||
2635 | get_osd(osd); | |
2636 | insert_linger(&osd->o_linger_requests, lreq); | |
2637 | lreq->osd = osd; | |
2638 | } | |
2639 | ||
2640 | static void unlink_linger(struct ceph_osd *osd, | |
2641 | struct ceph_osd_linger_request *lreq) | |
2642 | { | |
2643 | verify_osd_locked(osd); | |
2644 | WARN_ON(lreq->osd != osd); | |
2645 | dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, | |
2646 | osd->o_osd, lreq, lreq->linger_id); | |
2647 | ||
2648 | lreq->osd = NULL; | |
2649 | erase_linger(&osd->o_linger_requests, lreq); | |
2650 | put_osd(osd); | |
2651 | ||
2652 | if (!osd_homeless(osd)) | |
2653 | maybe_move_osd_to_lru(osd); | |
2654 | else | |
2655 | atomic_dec(&osd->o_osdc->num_homeless); | |
2656 | } | |
2657 | ||
2658 | static bool __linger_registered(struct ceph_osd_linger_request *lreq) | |
2659 | { | |
2660 | verify_osdc_locked(lreq->osdc); | |
2661 | ||
2662 | return !RB_EMPTY_NODE(&lreq->osdc_node); | |
2663 | } | |
2664 | ||
2665 | static bool linger_registered(struct ceph_osd_linger_request *lreq) | |
2666 | { | |
2667 | struct ceph_osd_client *osdc = lreq->osdc; | |
2668 | bool registered; | |
2669 | ||
2670 | down_read(&osdc->lock); | |
2671 | registered = __linger_registered(lreq); | |
2672 | up_read(&osdc->lock); | |
2673 | ||
2674 | return registered; | |
2675 | } | |
2676 | ||
2677 | static void linger_register(struct ceph_osd_linger_request *lreq) | |
2678 | { | |
2679 | struct ceph_osd_client *osdc = lreq->osdc; | |
2680 | ||
2681 | verify_osdc_wrlocked(osdc); | |
2682 | WARN_ON(lreq->linger_id); | |
2683 | ||
2684 | linger_get(lreq); | |
2685 | lreq->linger_id = ++osdc->last_linger_id; | |
2686 | insert_linger_osdc(&osdc->linger_requests, lreq); | |
2687 | } | |
2688 | ||
2689 | static void linger_unregister(struct ceph_osd_linger_request *lreq) | |
2690 | { | |
2691 | struct ceph_osd_client *osdc = lreq->osdc; | |
2692 | ||
2693 | verify_osdc_wrlocked(osdc); | |
2694 | ||
2695 | erase_linger_osdc(&osdc->linger_requests, lreq); | |
2696 | linger_put(lreq); | |
2697 | } | |
2698 | ||
2699 | static void cancel_linger_request(struct ceph_osd_request *req) | |
2700 | { | |
2701 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
2702 | ||
2703 | WARN_ON(!req->r_linger); | |
2704 | cancel_request(req); | |
2705 | linger_put(lreq); | |
2706 | } | |
2707 | ||
2708 | struct linger_work { | |
2709 | struct work_struct work; | |
2710 | struct ceph_osd_linger_request *lreq; | |
b07d3c4b ID |
2711 | struct list_head pending_item; |
2712 | unsigned long queued_stamp; | |
922dab61 ID |
2713 | |
2714 | union { | |
2715 | struct { | |
2716 | u64 notify_id; | |
2717 | u64 notifier_id; | |
2718 | void *payload; /* points into @msg front */ | |
2719 | size_t payload_len; | |
2720 | ||
2721 | struct ceph_msg *msg; /* for ceph_msg_put() */ | |
2722 | } notify; | |
2723 | struct { | |
2724 | int err; | |
2725 | } error; | |
2726 | }; | |
2727 | }; | |
2728 | ||
2729 | static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, | |
2730 | work_func_t workfn) | |
2731 | { | |
2732 | struct linger_work *lwork; | |
2733 | ||
2734 | lwork = kzalloc(sizeof(*lwork), GFP_NOIO); | |
2735 | if (!lwork) | |
2736 | return NULL; | |
2737 | ||
2738 | INIT_WORK(&lwork->work, workfn); | |
b07d3c4b | 2739 | INIT_LIST_HEAD(&lwork->pending_item); |
922dab61 ID |
2740 | lwork->lreq = linger_get(lreq); |
2741 | ||
2742 | return lwork; | |
2743 | } | |
2744 | ||
2745 | static void lwork_free(struct linger_work *lwork) | |
2746 | { | |
2747 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
2748 | ||
b07d3c4b ID |
2749 | mutex_lock(&lreq->lock); |
2750 | list_del(&lwork->pending_item); | |
2751 | mutex_unlock(&lreq->lock); | |
2752 | ||
922dab61 ID |
2753 | linger_put(lreq); |
2754 | kfree(lwork); | |
2755 | } | |
2756 | ||
2757 | static void lwork_queue(struct linger_work *lwork) | |
2758 | { | |
2759 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
2760 | struct ceph_osd_client *osdc = lreq->osdc; | |
2761 | ||
2762 | verify_lreq_locked(lreq); | |
b07d3c4b ID |
2763 | WARN_ON(!list_empty(&lwork->pending_item)); |
2764 | ||
2765 | lwork->queued_stamp = jiffies; | |
2766 | list_add_tail(&lwork->pending_item, &lreq->pending_lworks); | |
922dab61 ID |
2767 | queue_work(osdc->notify_wq, &lwork->work); |
2768 | } | |
2769 | ||
2770 | static void do_watch_notify(struct work_struct *w) | |
2771 | { | |
2772 | struct linger_work *lwork = container_of(w, struct linger_work, work); | |
2773 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
2774 | ||
2775 | if (!linger_registered(lreq)) { | |
2776 | dout("%s lreq %p not registered\n", __func__, lreq); | |
2777 | goto out; | |
2778 | } | |
2779 | ||
19079203 | 2780 | WARN_ON(!lreq->is_watch); |
922dab61 ID |
2781 | dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", |
2782 | __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, | |
2783 | lwork->notify.payload_len); | |
2784 | lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, | |
2785 | lwork->notify.notifier_id, lwork->notify.payload, | |
2786 | lwork->notify.payload_len); | |
2787 | ||
2788 | out: | |
2789 | ceph_msg_put(lwork->notify.msg); | |
2790 | lwork_free(lwork); | |
2791 | } | |
2792 | ||
2793 | static void do_watch_error(struct work_struct *w) | |
2794 | { | |
2795 | struct linger_work *lwork = container_of(w, struct linger_work, work); | |
2796 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
2797 | ||
2798 | if (!linger_registered(lreq)) { | |
2799 | dout("%s lreq %p not registered\n", __func__, lreq); | |
2800 | goto out; | |
2801 | } | |
2802 | ||
2803 | dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); | |
2804 | lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); | |
2805 | ||
2806 | out: | |
2807 | lwork_free(lwork); | |
2808 | } | |
2809 | ||
2810 | static void queue_watch_error(struct ceph_osd_linger_request *lreq) | |
2811 | { | |
2812 | struct linger_work *lwork; | |
2813 | ||
2814 | lwork = lwork_alloc(lreq, do_watch_error); | |
2815 | if (!lwork) { | |
2816 | pr_err("failed to allocate error-lwork\n"); | |
2817 | return; | |
2818 | } | |
2819 | ||
2820 | lwork->error.err = lreq->last_error; | |
2821 | lwork_queue(lwork); | |
2822 | } | |
2823 | ||
2824 | static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, | |
2825 | int result) | |
2826 | { | |
2827 | if (!completion_done(&lreq->reg_commit_wait)) { | |
2828 | lreq->reg_commit_error = (result <= 0 ? result : 0); | |
2829 | complete_all(&lreq->reg_commit_wait); | |
2830 | } | |
2831 | } | |
2832 | ||
2833 | static void linger_commit_cb(struct ceph_osd_request *req) | |
2834 | { | |
2835 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
2836 | ||
2837 | mutex_lock(&lreq->lock); | |
2838 | dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, | |
2839 | lreq->linger_id, req->r_result); | |
922dab61 ID |
2840 | linger_reg_commit_complete(lreq, req->r_result); |
2841 | lreq->committed = true; | |
2842 | ||
19079203 ID |
2843 | if (!lreq->is_watch) { |
2844 | struct ceph_osd_data *osd_data = | |
2845 | osd_req_op_data(req, 0, notify, response_data); | |
2846 | void *p = page_address(osd_data->pages[0]); | |
2847 | ||
2848 | WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || | |
2849 | osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); | |
2850 | ||
2851 | /* make note of the notify_id */ | |
2852 | if (req->r_ops[0].outdata_len >= sizeof(u64)) { | |
2853 | lreq->notify_id = ceph_decode_64(&p); | |
2854 | dout("lreq %p notify_id %llu\n", lreq, | |
2855 | lreq->notify_id); | |
2856 | } else { | |
2857 | dout("lreq %p no notify_id\n", lreq); | |
2858 | } | |
2859 | } | |
2860 | ||
922dab61 ID |
2861 | mutex_unlock(&lreq->lock); |
2862 | linger_put(lreq); | |
2863 | } | |
2864 | ||
2865 | static int normalize_watch_error(int err) | |
2866 | { | |
2867 | /* | |
2868 | * Translate ENOENT -> ENOTCONN so that a delete->disconnection | |
2869 | * notification and a failure to reconnect because we raced with | |
2870 | * the delete appear the same to the user. | |
2871 | */ | |
2872 | if (err == -ENOENT) | |
2873 | err = -ENOTCONN; | |
2874 | ||
2875 | return err; | |
2876 | } | |
2877 | ||
2878 | static void linger_reconnect_cb(struct ceph_osd_request *req) | |
2879 | { | |
2880 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
2881 | ||
2882 | mutex_lock(&lreq->lock); | |
2883 | dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, | |
2884 | lreq, lreq->linger_id, req->r_result, lreq->last_error); | |
2885 | if (req->r_result < 0) { | |
2886 | if (!lreq->last_error) { | |
2887 | lreq->last_error = normalize_watch_error(req->r_result); | |
2888 | queue_watch_error(lreq); | |
2889 | } | |
2890 | } | |
2891 | ||
2892 | mutex_unlock(&lreq->lock); | |
2893 | linger_put(lreq); | |
2894 | } | |
2895 | ||
2896 | static void send_linger(struct ceph_osd_linger_request *lreq) | |
2897 | { | |
2898 | struct ceph_osd_request *req = lreq->reg_req; | |
2899 | struct ceph_osd_req_op *op = &req->r_ops[0]; | |
2900 | ||
2901 | verify_osdc_wrlocked(req->r_osdc); | |
2902 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); | |
2903 | ||
2904 | if (req->r_osd) | |
2905 | cancel_linger_request(req); | |
2906 | ||
2907 | request_reinit(req); | |
2908 | ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); | |
2909 | ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); | |
2910 | req->r_flags = lreq->t.flags; | |
2911 | req->r_mtime = lreq->mtime; | |
2912 | ||
2913 | mutex_lock(&lreq->lock); | |
19079203 | 2914 | if (lreq->is_watch && lreq->committed) { |
922dab61 ID |
2915 | WARN_ON(op->op != CEPH_OSD_OP_WATCH || |
2916 | op->watch.cookie != lreq->linger_id); | |
2917 | op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; | |
2918 | op->watch.gen = ++lreq->register_gen; | |
2919 | dout("lreq %p reconnect register_gen %u\n", lreq, | |
2920 | op->watch.gen); | |
2921 | req->r_callback = linger_reconnect_cb; | |
2922 | } else { | |
19079203 ID |
2923 | if (!lreq->is_watch) |
2924 | lreq->notify_id = 0; | |
2925 | else | |
2926 | WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); | |
922dab61 ID |
2927 | dout("lreq %p register\n", lreq); |
2928 | req->r_callback = linger_commit_cb; | |
2929 | } | |
2930 | mutex_unlock(&lreq->lock); | |
2931 | ||
2932 | req->r_priv = linger_get(lreq); | |
2933 | req->r_linger = true; | |
2934 | ||
2935 | submit_request(req, true); | |
2936 | } | |
2937 | ||
2938 | static void linger_ping_cb(struct ceph_osd_request *req) | |
2939 | { | |
2940 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
2941 | ||
2942 | mutex_lock(&lreq->lock); | |
2943 | dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", | |
2944 | __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, | |
2945 | lreq->last_error); | |
2946 | if (lreq->register_gen == req->r_ops[0].watch.gen) { | |
b07d3c4b ID |
2947 | if (!req->r_result) { |
2948 | lreq->watch_valid_thru = lreq->ping_sent; | |
2949 | } else if (!lreq->last_error) { | |
922dab61 ID |
2950 | lreq->last_error = normalize_watch_error(req->r_result); |
2951 | queue_watch_error(lreq); | |
2952 | } | |
2953 | } else { | |
2954 | dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, | |
2955 | lreq->register_gen, req->r_ops[0].watch.gen); | |
2956 | } | |
2957 | ||
2958 | mutex_unlock(&lreq->lock); | |
2959 | linger_put(lreq); | |
2960 | } | |
2961 | ||
2962 | static void send_linger_ping(struct ceph_osd_linger_request *lreq) | |
2963 | { | |
2964 | struct ceph_osd_client *osdc = lreq->osdc; | |
2965 | struct ceph_osd_request *req = lreq->ping_req; | |
2966 | struct ceph_osd_req_op *op = &req->r_ops[0]; | |
2967 | ||
b7ec35b3 | 2968 | if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { |
922dab61 ID |
2969 | dout("%s PAUSERD\n", __func__); |
2970 | return; | |
2971 | } | |
2972 | ||
2973 | lreq->ping_sent = jiffies; | |
2974 | dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", | |
2975 | __func__, lreq, lreq->linger_id, lreq->ping_sent, | |
2976 | lreq->register_gen); | |
2977 | ||
2978 | if (req->r_osd) | |
2979 | cancel_linger_request(req); | |
2980 | ||
2981 | request_reinit(req); | |
2982 | target_copy(&req->r_t, &lreq->t); | |
2983 | ||
2984 | WARN_ON(op->op != CEPH_OSD_OP_WATCH || | |
2985 | op->watch.cookie != lreq->linger_id || | |
2986 | op->watch.op != CEPH_OSD_WATCH_OP_PING); | |
2987 | op->watch.gen = lreq->register_gen; | |
2988 | req->r_callback = linger_ping_cb; | |
2989 | req->r_priv = linger_get(lreq); | |
2990 | req->r_linger = true; | |
2991 | ||
2992 | ceph_osdc_get_request(req); | |
2993 | account_request(req); | |
2994 | req->r_tid = atomic64_inc_return(&osdc->last_tid); | |
2995 | link_request(lreq->osd, req); | |
2996 | send_request(req); | |
2997 | } | |
2998 | ||
2999 | static void linger_submit(struct ceph_osd_linger_request *lreq) | |
3000 | { | |
3001 | struct ceph_osd_client *osdc = lreq->osdc; | |
3002 | struct ceph_osd *osd; | |
3003 | ||
7de030d6 | 3004 | calc_target(osdc, &lreq->t, NULL, false); |
922dab61 ID |
3005 | osd = lookup_create_osd(osdc, lreq->t.osd, true); |
3006 | link_linger(osd, lreq); | |
3007 | ||
3008 | send_linger(lreq); | |
3009 | } | |
3010 | ||
4609245e ID |
3011 | static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) |
3012 | { | |
3013 | struct ceph_osd_client *osdc = lreq->osdc; | |
3014 | struct ceph_osd_linger_request *lookup_lreq; | |
3015 | ||
3016 | verify_osdc_wrlocked(osdc); | |
3017 | ||
3018 | lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, | |
3019 | lreq->linger_id); | |
3020 | if (!lookup_lreq) | |
3021 | return; | |
3022 | ||
3023 | WARN_ON(lookup_lreq != lreq); | |
3024 | erase_linger_mc(&osdc->linger_map_checks, lreq); | |
3025 | linger_put(lreq); | |
3026 | } | |
3027 | ||
922dab61 ID |
3028 | /* |
3029 | * @lreq has to be both registered and linked. | |
3030 | */ | |
3031 | static void __linger_cancel(struct ceph_osd_linger_request *lreq) | |
3032 | { | |
19079203 | 3033 | if (lreq->is_watch && lreq->ping_req->r_osd) |
922dab61 ID |
3034 | cancel_linger_request(lreq->ping_req); |
3035 | if (lreq->reg_req->r_osd) | |
3036 | cancel_linger_request(lreq->reg_req); | |
4609245e | 3037 | cancel_linger_map_check(lreq); |
922dab61 ID |
3038 | unlink_linger(lreq->osd, lreq); |
3039 | linger_unregister(lreq); | |
3040 | } | |
3041 | ||
3042 | static void linger_cancel(struct ceph_osd_linger_request *lreq) | |
3043 | { | |
3044 | struct ceph_osd_client *osdc = lreq->osdc; | |
3045 | ||
3046 | down_write(&osdc->lock); | |
3047 | if (__linger_registered(lreq)) | |
3048 | __linger_cancel(lreq); | |
3049 | up_write(&osdc->lock); | |
3050 | } | |
3051 | ||
4609245e ID |
3052 | static void send_linger_map_check(struct ceph_osd_linger_request *lreq); |
3053 | ||
3054 | static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) | |
3055 | { | |
3056 | struct ceph_osd_client *osdc = lreq->osdc; | |
3057 | struct ceph_osdmap *map = osdc->osdmap; | |
3058 | ||
3059 | verify_osdc_wrlocked(osdc); | |
3060 | WARN_ON(!map->epoch); | |
3061 | ||
3062 | if (lreq->register_gen) { | |
3063 | lreq->map_dne_bound = map->epoch; | |
3064 | dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, | |
3065 | lreq, lreq->linger_id); | |
3066 | } else { | |
3067 | dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", | |
3068 | __func__, lreq, lreq->linger_id, lreq->map_dne_bound, | |
3069 | map->epoch); | |
3070 | } | |
3071 | ||
3072 | if (lreq->map_dne_bound) { | |
3073 | if (map->epoch >= lreq->map_dne_bound) { | |
3074 | /* we had a new enough map */ | |
3075 | pr_info("linger_id %llu pool does not exist\n", | |
3076 | lreq->linger_id); | |
3077 | linger_reg_commit_complete(lreq, -ENOENT); | |
3078 | __linger_cancel(lreq); | |
3079 | } | |
3080 | } else { | |
3081 | send_linger_map_check(lreq); | |
3082 | } | |
3083 | } | |
3084 | ||
3085 | static void linger_map_check_cb(struct ceph_mon_generic_request *greq) | |
3086 | { | |
3087 | struct ceph_osd_client *osdc = &greq->monc->client->osdc; | |
3088 | struct ceph_osd_linger_request *lreq; | |
3089 | u64 linger_id = greq->private_data; | |
3090 | ||
3091 | WARN_ON(greq->result || !greq->u.newest); | |
3092 | ||
3093 | down_write(&osdc->lock); | |
3094 | lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); | |
3095 | if (!lreq) { | |
3096 | dout("%s linger_id %llu dne\n", __func__, linger_id); | |
3097 | goto out_unlock; | |
3098 | } | |
3099 | ||
3100 | dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", | |
3101 | __func__, lreq, lreq->linger_id, lreq->map_dne_bound, | |
3102 | greq->u.newest); | |
3103 | if (!lreq->map_dne_bound) | |
3104 | lreq->map_dne_bound = greq->u.newest; | |
3105 | erase_linger_mc(&osdc->linger_map_checks, lreq); | |
3106 | check_linger_pool_dne(lreq); | |
3107 | ||
3108 | linger_put(lreq); | |
3109 | out_unlock: | |
3110 | up_write(&osdc->lock); | |
3111 | } | |
3112 | ||
3113 | static void send_linger_map_check(struct ceph_osd_linger_request *lreq) | |
3114 | { | |
3115 | struct ceph_osd_client *osdc = lreq->osdc; | |
3116 | struct ceph_osd_linger_request *lookup_lreq; | |
3117 | int ret; | |
3118 | ||
3119 | verify_osdc_wrlocked(osdc); | |
3120 | ||
3121 | lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, | |
3122 | lreq->linger_id); | |
3123 | if (lookup_lreq) { | |
3124 | WARN_ON(lookup_lreq != lreq); | |
3125 | return; | |
3126 | } | |
3127 | ||
3128 | linger_get(lreq); | |
3129 | insert_linger_mc(&osdc->linger_map_checks, lreq); | |
3130 | ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", | |
3131 | linger_map_check_cb, lreq->linger_id); | |
3132 | WARN_ON(ret); | |
3133 | } | |
3134 | ||
922dab61 ID |
3135 | static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) |
3136 | { | |
3137 | int ret; | |
3138 | ||
3139 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); | |
3140 | ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); | |
3141 | return ret ?: lreq->reg_commit_error; | |
3142 | } | |
3143 | ||
19079203 ID |
3144 | static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) |
3145 | { | |
3146 | int ret; | |
3147 | ||
3148 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); | |
3149 | ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); | |
3150 | return ret ?: lreq->notify_finish_error; | |
3151 | } | |
3152 | ||
f24e9980 | 3153 | /* |
fbca9635 ID |
3154 | * Timeout callback, called every N seconds. When 1 or more OSD |
3155 | * requests has been active for more than N seconds, we send a keepalive | |
3156 | * (tag + timestamp) to its OSD to ensure any communications channel | |
3157 | * reset is detected. | |
f24e9980 SW |
3158 | */ |
3159 | static void handle_timeout(struct work_struct *work) | |
3160 | { | |
3161 | struct ceph_osd_client *osdc = | |
3162 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
a319bf56 | 3163 | struct ceph_options *opts = osdc->client->options; |
5aea3dcd | 3164 | unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; |
7cc5e38f | 3165 | unsigned long expiry_cutoff = jiffies - opts->osd_request_timeout; |
5aea3dcd ID |
3166 | LIST_HEAD(slow_osds); |
3167 | struct rb_node *n, *p; | |
f24e9980 | 3168 | |
5aea3dcd ID |
3169 | dout("%s osdc %p\n", __func__, osdc); |
3170 | down_write(&osdc->lock); | |
f24e9980 | 3171 | |
422d2cb8 YS |
3172 | /* |
3173 | * ping osds that are a bit slow. this ensures that if there | |
3174 | * is a break in the TCP connection we will notice, and reopen | |
3175 | * a connection with that osd (from the fault callback). | |
3176 | */ | |
5aea3dcd ID |
3177 | for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { |
3178 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
3179 | bool found = false; | |
3180 | ||
7cc5e38f | 3181 | for (p = rb_first(&osd->o_requests); p; ) { |
5aea3dcd ID |
3182 | struct ceph_osd_request *req = |
3183 | rb_entry(p, struct ceph_osd_request, r_node); | |
3184 | ||
7cc5e38f ID |
3185 | p = rb_next(p); /* abort_request() */ |
3186 | ||
5aea3dcd ID |
3187 | if (time_before(req->r_stamp, cutoff)) { |
3188 | dout(" req %p tid %llu on osd%d is laggy\n", | |
3189 | req, req->r_tid, osd->o_osd); | |
3190 | found = true; | |
3191 | } | |
7cc5e38f ID |
3192 | if (opts->osd_request_timeout && |
3193 | time_before(req->r_start_stamp, expiry_cutoff)) { | |
3194 | pr_err_ratelimited("tid %llu on osd%d timeout\n", | |
3195 | req->r_tid, osd->o_osd); | |
3196 | abort_request(req, -ETIMEDOUT); | |
3197 | } | |
5aea3dcd | 3198 | } |
922dab61 ID |
3199 | for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { |
3200 | struct ceph_osd_linger_request *lreq = | |
3201 | rb_entry(p, struct ceph_osd_linger_request, node); | |
3202 | ||
3203 | dout(" lreq %p linger_id %llu is served by osd%d\n", | |
3204 | lreq, lreq->linger_id, osd->o_osd); | |
3205 | found = true; | |
3206 | ||
3207 | mutex_lock(&lreq->lock); | |
19079203 | 3208 | if (lreq->is_watch && lreq->committed && !lreq->last_error) |
922dab61 ID |
3209 | send_linger_ping(lreq); |
3210 | mutex_unlock(&lreq->lock); | |
3211 | } | |
422d2cb8 | 3212 | |
5aea3dcd ID |
3213 | if (found) |
3214 | list_move_tail(&osd->o_keepalive_item, &slow_osds); | |
422d2cb8 | 3215 | } |
5aea3dcd | 3216 | |
7cc5e38f ID |
3217 | if (opts->osd_request_timeout) { |
3218 | for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { | |
3219 | struct ceph_osd_request *req = | |
3220 | rb_entry(p, struct ceph_osd_request, r_node); | |
3221 | ||
3222 | p = rb_next(p); /* abort_request() */ | |
3223 | ||
3224 | if (time_before(req->r_start_stamp, expiry_cutoff)) { | |
3225 | pr_err_ratelimited("tid %llu on osd%d timeout\n", | |
3226 | req->r_tid, osdc->homeless_osd.o_osd); | |
3227 | abort_request(req, -ETIMEDOUT); | |
3228 | } | |
3229 | } | |
3230 | } | |
3231 | ||
5aea3dcd ID |
3232 | if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) |
3233 | maybe_request_map(osdc); | |
3234 | ||
422d2cb8 | 3235 | while (!list_empty(&slow_osds)) { |
5aea3dcd ID |
3236 | struct ceph_osd *osd = list_first_entry(&slow_osds, |
3237 | struct ceph_osd, | |
3238 | o_keepalive_item); | |
422d2cb8 | 3239 | list_del_init(&osd->o_keepalive_item); |
f24e9980 SW |
3240 | ceph_con_keepalive(&osd->o_con); |
3241 | } | |
3242 | ||
5aea3dcd | 3243 | up_write(&osdc->lock); |
fbca9635 ID |
3244 | schedule_delayed_work(&osdc->timeout_work, |
3245 | osdc->client->options->osd_keepalive_timeout); | |
f24e9980 SW |
3246 | } |
3247 | ||
f5a2041b YS |
3248 | static void handle_osds_timeout(struct work_struct *work) |
3249 | { | |
3250 | struct ceph_osd_client *osdc = | |
3251 | container_of(work, struct ceph_osd_client, | |
3252 | osds_timeout_work.work); | |
a319bf56 | 3253 | unsigned long delay = osdc->client->options->osd_idle_ttl / 4; |
42a2c09f | 3254 | struct ceph_osd *osd, *nosd; |
f5a2041b | 3255 | |
42a2c09f | 3256 | dout("%s osdc %p\n", __func__, osdc); |
5aea3dcd | 3257 | down_write(&osdc->lock); |
42a2c09f ID |
3258 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { |
3259 | if (time_before(jiffies, osd->lru_ttl)) | |
3260 | break; | |
3261 | ||
5aea3dcd | 3262 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); |
922dab61 | 3263 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); |
5aea3dcd | 3264 | close_osd(osd); |
42a2c09f | 3265 | } |
f5a2041b | 3266 | |
5aea3dcd | 3267 | up_write(&osdc->lock); |
f5a2041b YS |
3268 | schedule_delayed_work(&osdc->osds_timeout_work, |
3269 | round_jiffies_relative(delay)); | |
3270 | } | |
3271 | ||
205ee118 ID |
3272 | static int ceph_oloc_decode(void **p, void *end, |
3273 | struct ceph_object_locator *oloc) | |
3274 | { | |
3275 | u8 struct_v, struct_cv; | |
3276 | u32 len; | |
3277 | void *struct_end; | |
3278 | int ret = 0; | |
3279 | ||
3280 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
3281 | struct_v = ceph_decode_8(p); | |
3282 | struct_cv = ceph_decode_8(p); | |
3283 | if (struct_v < 3) { | |
3284 | pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", | |
3285 | struct_v, struct_cv); | |
3286 | goto e_inval; | |
3287 | } | |
3288 | if (struct_cv > 6) { | |
3289 | pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", | |
3290 | struct_v, struct_cv); | |
3291 | goto e_inval; | |
3292 | } | |
3293 | len = ceph_decode_32(p); | |
3294 | ceph_decode_need(p, end, len, e_inval); | |
3295 | struct_end = *p + len; | |
3296 | ||
3297 | oloc->pool = ceph_decode_64(p); | |
3298 | *p += 4; /* skip preferred */ | |
3299 | ||
3300 | len = ceph_decode_32(p); | |
3301 | if (len > 0) { | |
3302 | pr_warn("ceph_object_locator::key is set\n"); | |
3303 | goto e_inval; | |
3304 | } | |
3305 | ||
3306 | if (struct_v >= 5) { | |
cd08e0a2 YZ |
3307 | bool changed = false; |
3308 | ||
205ee118 ID |
3309 | len = ceph_decode_32(p); |
3310 | if (len > 0) { | |
30c156d9 | 3311 | ceph_decode_need(p, end, len, e_inval); |
cd08e0a2 YZ |
3312 | if (!oloc->pool_ns || |
3313 | ceph_compare_string(oloc->pool_ns, *p, len)) | |
3314 | changed = true; | |
30c156d9 | 3315 | *p += len; |
cd08e0a2 YZ |
3316 | } else { |
3317 | if (oloc->pool_ns) | |
3318 | changed = true; | |
3319 | } | |
3320 | if (changed) { | |
3321 | /* redirect changes namespace */ | |
3322 | pr_warn("ceph_object_locator::nspace is changed\n"); | |
3323 | goto e_inval; | |
205ee118 ID |
3324 | } |
3325 | } | |
3326 | ||
3327 | if (struct_v >= 6) { | |
3328 | s64 hash = ceph_decode_64(p); | |
3329 | if (hash != -1) { | |
3330 | pr_warn("ceph_object_locator::hash is set\n"); | |
3331 | goto e_inval; | |
3332 | } | |
3333 | } | |
3334 | ||
3335 | /* skip the rest */ | |
3336 | *p = struct_end; | |
3337 | out: | |
3338 | return ret; | |
3339 | ||
3340 | e_inval: | |
3341 | ret = -EINVAL; | |
3342 | goto out; | |
3343 | } | |
3344 | ||
3345 | static int ceph_redirect_decode(void **p, void *end, | |
3346 | struct ceph_request_redirect *redir) | |
3347 | { | |
3348 | u8 struct_v, struct_cv; | |
3349 | u32 len; | |
3350 | void *struct_end; | |
3351 | int ret; | |
3352 | ||
3353 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
3354 | struct_v = ceph_decode_8(p); | |
3355 | struct_cv = ceph_decode_8(p); | |
3356 | if (struct_cv > 1) { | |
3357 | pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", | |
3358 | struct_v, struct_cv); | |
3359 | goto e_inval; | |
3360 | } | |
3361 | len = ceph_decode_32(p); | |
3362 | ceph_decode_need(p, end, len, e_inval); | |
3363 | struct_end = *p + len; | |
3364 | ||
3365 | ret = ceph_oloc_decode(p, end, &redir->oloc); | |
3366 | if (ret) | |
3367 | goto out; | |
3368 | ||
3369 | len = ceph_decode_32(p); | |
3370 | if (len > 0) { | |
3371 | pr_warn("ceph_request_redirect::object_name is set\n"); | |
3372 | goto e_inval; | |
3373 | } | |
3374 | ||
3375 | len = ceph_decode_32(p); | |
3376 | *p += len; /* skip osd_instructions */ | |
3377 | ||
3378 | /* skip the rest */ | |
3379 | *p = struct_end; | |
3380 | out: | |
3381 | return ret; | |
3382 | ||
3383 | e_inval: | |
3384 | ret = -EINVAL; | |
3385 | goto out; | |
3386 | } | |
3387 | ||
fe5da05e ID |
3388 | struct MOSDOpReply { |
3389 | struct ceph_pg pgid; | |
3390 | u64 flags; | |
3391 | int result; | |
3392 | u32 epoch; | |
3393 | int num_ops; | |
3394 | u32 outdata_len[CEPH_OSD_MAX_OPS]; | |
3395 | s32 rval[CEPH_OSD_MAX_OPS]; | |
3396 | int retry_attempt; | |
3397 | struct ceph_eversion replay_version; | |
3398 | u64 user_version; | |
3399 | struct ceph_request_redirect redirect; | |
3400 | }; | |
25845472 | 3401 | |
fe5da05e | 3402 | static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) |
f24e9980 | 3403 | { |
fe5da05e ID |
3404 | void *p = msg->front.iov_base; |
3405 | void *const end = p + msg->front.iov_len; | |
3406 | u16 version = le16_to_cpu(msg->hdr.version); | |
3407 | struct ceph_eversion bad_replay_version; | |
b0b31a8f | 3408 | u8 decode_redir; |
fe5da05e ID |
3409 | u32 len; |
3410 | int ret; | |
3411 | int i; | |
1b83bef2 | 3412 | |
fe5da05e ID |
3413 | ceph_decode_32_safe(&p, end, len, e_inval); |
3414 | ceph_decode_need(&p, end, len, e_inval); | |
3415 | p += len; /* skip oid */ | |
1b83bef2 | 3416 | |
fe5da05e ID |
3417 | ret = ceph_decode_pgid(&p, end, &m->pgid); |
3418 | if (ret) | |
3419 | return ret; | |
1b83bef2 | 3420 | |
fe5da05e ID |
3421 | ceph_decode_64_safe(&p, end, m->flags, e_inval); |
3422 | ceph_decode_32_safe(&p, end, m->result, e_inval); | |
3423 | ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); | |
3424 | memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); | |
3425 | p += sizeof(bad_replay_version); | |
3426 | ceph_decode_32_safe(&p, end, m->epoch, e_inval); | |
1b83bef2 | 3427 | |
fe5da05e ID |
3428 | ceph_decode_32_safe(&p, end, m->num_ops, e_inval); |
3429 | if (m->num_ops > ARRAY_SIZE(m->outdata_len)) | |
3430 | goto e_inval; | |
1b83bef2 | 3431 | |
fe5da05e ID |
3432 | ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), |
3433 | e_inval); | |
3434 | for (i = 0; i < m->num_ops; i++) { | |
1b83bef2 | 3435 | struct ceph_osd_op *op = p; |
1b83bef2 | 3436 | |
fe5da05e | 3437 | m->outdata_len[i] = le32_to_cpu(op->payload_len); |
1b83bef2 SW |
3438 | p += sizeof(*op); |
3439 | } | |
1b83bef2 | 3440 | |
fe5da05e ID |
3441 | ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); |
3442 | for (i = 0; i < m->num_ops; i++) | |
3443 | ceph_decode_32_safe(&p, end, m->rval[i], e_inval); | |
f24e9980 | 3444 | |
fe5da05e ID |
3445 | if (version >= 5) { |
3446 | ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); | |
3447 | memcpy(&m->replay_version, p, sizeof(m->replay_version)); | |
3448 | p += sizeof(m->replay_version); | |
3449 | ceph_decode_64_safe(&p, end, m->user_version, e_inval); | |
3450 | } else { | |
3451 | m->replay_version = bad_replay_version; /* struct */ | |
3452 | m->user_version = le64_to_cpu(m->replay_version.version); | |
3453 | } | |
eb845ff1 | 3454 | |
fe5da05e ID |
3455 | if (version >= 6) { |
3456 | if (version >= 7) | |
3457 | ceph_decode_8_safe(&p, end, decode_redir, e_inval); | |
b0b31a8f ID |
3458 | else |
3459 | decode_redir = 1; | |
3460 | } else { | |
3461 | decode_redir = 0; | |
3462 | } | |
3463 | ||
3464 | if (decode_redir) { | |
fe5da05e ID |
3465 | ret = ceph_redirect_decode(&p, end, &m->redirect); |
3466 | if (ret) | |
3467 | return ret; | |
205ee118 | 3468 | } else { |
fe5da05e | 3469 | ceph_oloc_init(&m->redirect.oloc); |
205ee118 | 3470 | } |
f24e9980 | 3471 | |
fe5da05e ID |
3472 | return 0; |
3473 | ||
3474 | e_inval: | |
3475 | return -EINVAL; | |
3476 | } | |
3477 | ||
3478 | /* | |
b18b9550 ID |
3479 | * Handle MOSDOpReply. Set ->r_result and call the callback if it is |
3480 | * specified. | |
fe5da05e | 3481 | */ |
5aea3dcd | 3482 | static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) |
fe5da05e | 3483 | { |
5aea3dcd | 3484 | struct ceph_osd_client *osdc = osd->o_osdc; |
fe5da05e ID |
3485 | struct ceph_osd_request *req; |
3486 | struct MOSDOpReply m; | |
3487 | u64 tid = le64_to_cpu(msg->hdr.tid); | |
3488 | u32 data_len = 0; | |
fe5da05e ID |
3489 | int ret; |
3490 | int i; | |
3491 | ||
3492 | dout("%s msg %p tid %llu\n", __func__, msg, tid); | |
3493 | ||
5aea3dcd ID |
3494 | down_read(&osdc->lock); |
3495 | if (!osd_registered(osd)) { | |
3496 | dout("%s osd%d unknown\n", __func__, osd->o_osd); | |
3497 | goto out_unlock_osdc; | |
3498 | } | |
3499 | WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); | |
3500 | ||
3501 | mutex_lock(&osd->lock); | |
3502 | req = lookup_request(&osd->o_requests, tid); | |
fe5da05e | 3503 | if (!req) { |
5aea3dcd ID |
3504 | dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); |
3505 | goto out_unlock_session; | |
fe5da05e | 3506 | } |
fe5da05e | 3507 | |
cd08e0a2 | 3508 | m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns; |
fe5da05e | 3509 | ret = decode_MOSDOpReply(msg, &m); |
cd08e0a2 | 3510 | m.redirect.oloc.pool_ns = NULL; |
fe5da05e ID |
3511 | if (ret) { |
3512 | pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", | |
3513 | req->r_tid, ret); | |
3514 | ceph_msg_dump(msg); | |
3515 | goto fail_request; | |
3516 | } | |
3517 | dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", | |
3518 | __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, | |
3519 | m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), | |
3520 | le64_to_cpu(m.replay_version.version), m.user_version); | |
3521 | ||
3522 | if (m.retry_attempt >= 0) { | |
3523 | if (m.retry_attempt != req->r_attempts - 1) { | |
3524 | dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", | |
3525 | req, req->r_tid, m.retry_attempt, | |
3526 | req->r_attempts - 1); | |
5aea3dcd | 3527 | goto out_unlock_session; |
fe5da05e ID |
3528 | } |
3529 | } else { | |
3530 | WARN_ON(1); /* MOSDOpReply v4 is assumed */ | |
3531 | } | |
3532 | ||
3533 | if (!ceph_oloc_empty(&m.redirect.oloc)) { | |
3534 | dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, | |
3535 | m.redirect.oloc.pool); | |
5aea3dcd ID |
3536 | unlink_request(osd, req); |
3537 | mutex_unlock(&osd->lock); | |
205ee118 | 3538 | |
30c156d9 YZ |
3539 | /* |
3540 | * Not ceph_oloc_copy() - changing pool_ns is not | |
3541 | * supported. | |
3542 | */ | |
3543 | req->r_t.target_oloc.pool = m.redirect.oloc.pool; | |
5aea3dcd ID |
3544 | req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; |
3545 | req->r_tid = 0; | |
3546 | __submit_request(req, false); | |
3547 | goto out_unlock_osdc; | |
205ee118 ID |
3548 | } |
3549 | ||
fe5da05e ID |
3550 | if (m.num_ops != req->r_num_ops) { |
3551 | pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, | |
3552 | req->r_num_ops, req->r_tid); | |
3553 | goto fail_request; | |
f24e9980 | 3554 | } |
fe5da05e ID |
3555 | for (i = 0; i < req->r_num_ops; i++) { |
3556 | dout(" req %p tid %llu op %d rval %d len %u\n", req, | |
3557 | req->r_tid, i, m.rval[i], m.outdata_len[i]); | |
3558 | req->r_ops[i].rval = m.rval[i]; | |
3559 | req->r_ops[i].outdata_len = m.outdata_len[i]; | |
3560 | data_len += m.outdata_len[i]; | |
3561 | } | |
3562 | if (data_len != le32_to_cpu(msg->hdr.data_len)) { | |
3563 | pr_err("sum of lens %u != %u for tid %llu\n", data_len, | |
3564 | le32_to_cpu(msg->hdr.data_len), req->r_tid); | |
3565 | goto fail_request; | |
3566 | } | |
b18b9550 ID |
3567 | dout("%s req %p tid %llu result %d data_len %u\n", __func__, |
3568 | req, req->r_tid, m.result, data_len); | |
f24e9980 | 3569 | |
b18b9550 ID |
3570 | /* |
3571 | * Since we only ever request ONDISK, we should only ever get | |
3572 | * one (type of) reply back. | |
3573 | */ | |
3574 | WARN_ON(!(m.flags & CEPH_OSD_FLAG_ONDISK)); | |
3575 | req->r_result = m.result ?: data_len; | |
3576 | finish_request(req); | |
5aea3dcd ID |
3577 | mutex_unlock(&osd->lock); |
3578 | up_read(&osdc->lock); | |
f24e9980 | 3579 | |
b18b9550 | 3580 | __complete_request(req); |
f24e9980 SW |
3581 | return; |
3582 | ||
fe5da05e | 3583 | fail_request: |
4609245e | 3584 | complete_request(req, -EIO); |
5aea3dcd ID |
3585 | out_unlock_session: |
3586 | mutex_unlock(&osd->lock); | |
3587 | out_unlock_osdc: | |
3588 | up_read(&osdc->lock); | |
f24e9980 SW |
3589 | } |
3590 | ||
42c1b124 ID |
3591 | static void set_pool_was_full(struct ceph_osd_client *osdc) |
3592 | { | |
3593 | struct rb_node *n; | |
3594 | ||
3595 | for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { | |
3596 | struct ceph_pg_pool_info *pi = | |
3597 | rb_entry(n, struct ceph_pg_pool_info, node); | |
3598 | ||
3599 | pi->was_full = __pool_full(pi); | |
3600 | } | |
3601 | } | |
3602 | ||
5aea3dcd | 3603 | static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) |
f24e9980 | 3604 | { |
5aea3dcd | 3605 | struct ceph_pg_pool_info *pi; |
f24e9980 | 3606 | |
5aea3dcd ID |
3607 | pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); |
3608 | if (!pi) | |
3609 | return false; | |
f24e9980 | 3610 | |
5aea3dcd | 3611 | return pi->was_full && !__pool_full(pi); |
422d2cb8 YS |
3612 | } |
3613 | ||
922dab61 ID |
3614 | static enum calc_target_result |
3615 | recalc_linger_target(struct ceph_osd_linger_request *lreq) | |
3616 | { | |
3617 | struct ceph_osd_client *osdc = lreq->osdc; | |
3618 | enum calc_target_result ct_res; | |
3619 | ||
7de030d6 | 3620 | ct_res = calc_target(osdc, &lreq->t, NULL, true); |
922dab61 ID |
3621 | if (ct_res == CALC_TARGET_NEED_RESEND) { |
3622 | struct ceph_osd *osd; | |
3623 | ||
3624 | osd = lookup_create_osd(osdc, lreq->t.osd, true); | |
3625 | if (osd != lreq->osd) { | |
3626 | unlink_linger(lreq->osd, lreq); | |
3627 | link_linger(osd, lreq); | |
3628 | } | |
3629 | } | |
3630 | ||
3631 | return ct_res; | |
3632 | } | |
3633 | ||
422d2cb8 | 3634 | /* |
5aea3dcd | 3635 | * Requeue requests whose mapping to an OSD has changed. |
422d2cb8 | 3636 | */ |
5aea3dcd ID |
3637 | static void scan_requests(struct ceph_osd *osd, |
3638 | bool force_resend, | |
3639 | bool cleared_full, | |
3640 | bool check_pool_cleared_full, | |
3641 | struct rb_root *need_resend, | |
3642 | struct list_head *need_resend_linger) | |
422d2cb8 | 3643 | { |
5aea3dcd ID |
3644 | struct ceph_osd_client *osdc = osd->o_osdc; |
3645 | struct rb_node *n; | |
3646 | bool force_resend_writes; | |
3647 | ||
922dab61 ID |
3648 | for (n = rb_first(&osd->o_linger_requests); n; ) { |
3649 | struct ceph_osd_linger_request *lreq = | |
3650 | rb_entry(n, struct ceph_osd_linger_request, node); | |
3651 | enum calc_target_result ct_res; | |
3652 | ||
3653 | n = rb_next(n); /* recalc_linger_target() */ | |
3654 | ||
3655 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, | |
3656 | lreq->linger_id); | |
3657 | ct_res = recalc_linger_target(lreq); | |
3658 | switch (ct_res) { | |
3659 | case CALC_TARGET_NO_ACTION: | |
3660 | force_resend_writes = cleared_full || | |
3661 | (check_pool_cleared_full && | |
3662 | pool_cleared_full(osdc, lreq->t.base_oloc.pool)); | |
3663 | if (!force_resend && !force_resend_writes) | |
3664 | break; | |
3665 | ||
3666 | /* fall through */ | |
3667 | case CALC_TARGET_NEED_RESEND: | |
4609245e | 3668 | cancel_linger_map_check(lreq); |
922dab61 ID |
3669 | /* |
3670 | * scan_requests() for the previous epoch(s) | |
3671 | * may have already added it to the list, since | |
3672 | * it's not unlinked here. | |
3673 | */ | |
3674 | if (list_empty(&lreq->scan_item)) | |
3675 | list_add_tail(&lreq->scan_item, need_resend_linger); | |
3676 | break; | |
3677 | case CALC_TARGET_POOL_DNE: | |
a10bcb19 | 3678 | list_del_init(&lreq->scan_item); |
4609245e | 3679 | check_linger_pool_dne(lreq); |
922dab61 ID |
3680 | break; |
3681 | } | |
3682 | } | |
3683 | ||
5aea3dcd ID |
3684 | for (n = rb_first(&osd->o_requests); n; ) { |
3685 | struct ceph_osd_request *req = | |
3686 | rb_entry(n, struct ceph_osd_request, r_node); | |
3687 | enum calc_target_result ct_res; | |
3688 | ||
4609245e | 3689 | n = rb_next(n); /* unlink_request(), check_pool_dne() */ |
5aea3dcd ID |
3690 | |
3691 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); | |
7de030d6 ID |
3692 | ct_res = calc_target(osdc, &req->r_t, &req->r_osd->o_con, |
3693 | false); | |
5aea3dcd ID |
3694 | switch (ct_res) { |
3695 | case CALC_TARGET_NO_ACTION: | |
3696 | force_resend_writes = cleared_full || | |
3697 | (check_pool_cleared_full && | |
3698 | pool_cleared_full(osdc, req->r_t.base_oloc.pool)); | |
3699 | if (!force_resend && | |
3700 | (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || | |
3701 | !force_resend_writes)) | |
3702 | break; | |
3703 | ||
3704 | /* fall through */ | |
3705 | case CALC_TARGET_NEED_RESEND: | |
4609245e | 3706 | cancel_map_check(req); |
5aea3dcd ID |
3707 | unlink_request(osd, req); |
3708 | insert_request(need_resend, req); | |
3709 | break; | |
3710 | case CALC_TARGET_POOL_DNE: | |
4609245e | 3711 | check_pool_dne(req); |
5aea3dcd | 3712 | break; |
b0494532 | 3713 | } |
6f6c7006 | 3714 | } |
422d2cb8 | 3715 | } |
6f6c7006 | 3716 | |
42c1b124 | 3717 | static int handle_one_map(struct ceph_osd_client *osdc, |
5aea3dcd ID |
3718 | void *p, void *end, bool incremental, |
3719 | struct rb_root *need_resend, | |
3720 | struct list_head *need_resend_linger) | |
42c1b124 ID |
3721 | { |
3722 | struct ceph_osdmap *newmap; | |
3723 | struct rb_node *n; | |
3724 | bool skipped_map = false; | |
3725 | bool was_full; | |
3726 | ||
b7ec35b3 | 3727 | was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); |
42c1b124 ID |
3728 | set_pool_was_full(osdc); |
3729 | ||
3730 | if (incremental) | |
3731 | newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); | |
3732 | else | |
3733 | newmap = ceph_osdmap_decode(&p, end); | |
3734 | if (IS_ERR(newmap)) | |
3735 | return PTR_ERR(newmap); | |
3736 | ||
3737 | if (newmap != osdc->osdmap) { | |
3738 | /* | |
3739 | * Preserve ->was_full before destroying the old map. | |
3740 | * For pools that weren't in the old map, ->was_full | |
3741 | * should be false. | |
3742 | */ | |
3743 | for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { | |
3744 | struct ceph_pg_pool_info *pi = | |
3745 | rb_entry(n, struct ceph_pg_pool_info, node); | |
3746 | struct ceph_pg_pool_info *old_pi; | |
3747 | ||
3748 | old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); | |
3749 | if (old_pi) | |
3750 | pi->was_full = old_pi->was_full; | |
3751 | else | |
3752 | WARN_ON(pi->was_full); | |
3753 | } | |
3754 | ||
3755 | if (osdc->osdmap->epoch && | |
3756 | osdc->osdmap->epoch + 1 < newmap->epoch) { | |
3757 | WARN_ON(incremental); | |
3758 | skipped_map = true; | |
3759 | } | |
3760 | ||
3761 | ceph_osdmap_destroy(osdc->osdmap); | |
3762 | osdc->osdmap = newmap; | |
3763 | } | |
3764 | ||
b7ec35b3 | 3765 | was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); |
5aea3dcd ID |
3766 | scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, |
3767 | need_resend, need_resend_linger); | |
3768 | ||
3769 | for (n = rb_first(&osdc->osds); n; ) { | |
3770 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
3771 | ||
3772 | n = rb_next(n); /* close_osd() */ | |
3773 | ||
3774 | scan_requests(osd, skipped_map, was_full, true, need_resend, | |
3775 | need_resend_linger); | |
3776 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
3777 | memcmp(&osd->o_con.peer_addr, | |
3778 | ceph_osd_addr(osdc->osdmap, osd->o_osd), | |
3779 | sizeof(struct ceph_entity_addr))) | |
3780 | close_osd(osd); | |
3781 | } | |
42c1b124 ID |
3782 | |
3783 | return 0; | |
3784 | } | |
6f6c7006 | 3785 | |
5aea3dcd ID |
3786 | static void kick_requests(struct ceph_osd_client *osdc, |
3787 | struct rb_root *need_resend, | |
3788 | struct list_head *need_resend_linger) | |
3789 | { | |
922dab61 | 3790 | struct ceph_osd_linger_request *lreq, *nlreq; |
04c7d789 | 3791 | enum calc_target_result ct_res; |
5aea3dcd ID |
3792 | struct rb_node *n; |
3793 | ||
04c7d789 ID |
3794 | /* make sure need_resend targets reflect latest map */ |
3795 | for (n = rb_first(need_resend); n; ) { | |
3796 | struct ceph_osd_request *req = | |
3797 | rb_entry(n, struct ceph_osd_request, r_node); | |
3798 | ||
3799 | n = rb_next(n); | |
3800 | ||
3801 | if (req->r_t.epoch < osdc->osdmap->epoch) { | |
3802 | ct_res = calc_target(osdc, &req->r_t, NULL, false); | |
3803 | if (ct_res == CALC_TARGET_POOL_DNE) { | |
3804 | erase_request(need_resend, req); | |
3805 | check_pool_dne(req); | |
3806 | } | |
3807 | } | |
3808 | } | |
3809 | ||
5aea3dcd ID |
3810 | for (n = rb_first(need_resend); n; ) { |
3811 | struct ceph_osd_request *req = | |
3812 | rb_entry(n, struct ceph_osd_request, r_node); | |
3813 | struct ceph_osd *osd; | |
3814 | ||
3815 | n = rb_next(n); | |
3816 | erase_request(need_resend, req); /* before link_request() */ | |
3817 | ||
5aea3dcd ID |
3818 | osd = lookup_create_osd(osdc, req->r_t.osd, true); |
3819 | link_request(osd, req); | |
3820 | if (!req->r_linger) { | |
3821 | if (!osd_homeless(osd) && !req->r_t.paused) | |
3822 | send_request(req); | |
922dab61 ID |
3823 | } else { |
3824 | cancel_linger_request(req); | |
5aea3dcd ID |
3825 | } |
3826 | } | |
922dab61 ID |
3827 | |
3828 | list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { | |
3829 | if (!osd_homeless(lreq->osd)) | |
3830 | send_linger(lreq); | |
3831 | ||
3832 | list_del_init(&lreq->scan_item); | |
3833 | } | |
5aea3dcd ID |
3834 | } |
3835 | ||
f24e9980 SW |
3836 | /* |
3837 | * Process updated osd map. | |
3838 | * | |
3839 | * The message contains any number of incremental and full maps, normally | |
3840 | * indicating some sort of topology change in the cluster. Kick requests | |
3841 | * off to different OSDs as needed. | |
3842 | */ | |
3843 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
3844 | { | |
42c1b124 ID |
3845 | void *p = msg->front.iov_base; |
3846 | void *const end = p + msg->front.iov_len; | |
f24e9980 SW |
3847 | u32 nr_maps, maplen; |
3848 | u32 epoch; | |
f24e9980 | 3849 | struct ceph_fsid fsid; |
5aea3dcd ID |
3850 | struct rb_root need_resend = RB_ROOT; |
3851 | LIST_HEAD(need_resend_linger); | |
42c1b124 ID |
3852 | bool handled_incremental = false; |
3853 | bool was_pauserd, was_pausewr; | |
3854 | bool pauserd, pausewr; | |
3855 | int err; | |
f24e9980 | 3856 | |
42c1b124 | 3857 | dout("%s have %u\n", __func__, osdc->osdmap->epoch); |
5aea3dcd | 3858 | down_write(&osdc->lock); |
f24e9980 SW |
3859 | |
3860 | /* verify fsid */ | |
3861 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
3862 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d | 3863 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
42c1b124 | 3864 | goto bad; |
f24e9980 | 3865 | |
b7ec35b3 ID |
3866 | was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); |
3867 | was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || | |
3868 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || | |
42c1b124 | 3869 | have_pool_full(osdc); |
9a1ea2db | 3870 | |
f24e9980 SW |
3871 | /* incremental maps */ |
3872 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
3873 | dout(" %d inc maps\n", nr_maps); | |
3874 | while (nr_maps > 0) { | |
3875 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
3876 | epoch = ceph_decode_32(&p); |
3877 | maplen = ceph_decode_32(&p); | |
f24e9980 | 3878 | ceph_decode_need(&p, end, maplen, bad); |
42c1b124 ID |
3879 | if (osdc->osdmap->epoch && |
3880 | osdc->osdmap->epoch + 1 == epoch) { | |
f24e9980 SW |
3881 | dout("applying incremental map %u len %d\n", |
3882 | epoch, maplen); | |
5aea3dcd ID |
3883 | err = handle_one_map(osdc, p, p + maplen, true, |
3884 | &need_resend, &need_resend_linger); | |
42c1b124 | 3885 | if (err) |
f24e9980 | 3886 | goto bad; |
42c1b124 | 3887 | handled_incremental = true; |
f24e9980 SW |
3888 | } else { |
3889 | dout("ignoring incremental map %u len %d\n", | |
3890 | epoch, maplen); | |
3891 | } | |
42c1b124 | 3892 | p += maplen; |
f24e9980 SW |
3893 | nr_maps--; |
3894 | } | |
42c1b124 | 3895 | if (handled_incremental) |
f24e9980 SW |
3896 | goto done; |
3897 | ||
3898 | /* full maps */ | |
3899 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
3900 | dout(" %d full maps\n", nr_maps); | |
3901 | while (nr_maps) { | |
3902 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
3903 | epoch = ceph_decode_32(&p); |
3904 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
3905 | ceph_decode_need(&p, end, maplen, bad); |
3906 | if (nr_maps > 1) { | |
3907 | dout("skipping non-latest full map %u len %d\n", | |
3908 | epoch, maplen); | |
e5253a7b | 3909 | } else if (osdc->osdmap->epoch >= epoch) { |
f24e9980 SW |
3910 | dout("skipping full map %u len %d, " |
3911 | "older than our %u\n", epoch, maplen, | |
3912 | osdc->osdmap->epoch); | |
3913 | } else { | |
3914 | dout("taking full map %u len %d\n", epoch, maplen); | |
5aea3dcd ID |
3915 | err = handle_one_map(osdc, p, p + maplen, false, |
3916 | &need_resend, &need_resend_linger); | |
42c1b124 | 3917 | if (err) |
f24e9980 | 3918 | goto bad; |
f24e9980 SW |
3919 | } |
3920 | p += maplen; | |
3921 | nr_maps--; | |
3922 | } | |
3923 | ||
3924 | done: | |
cd634fb6 SW |
3925 | /* |
3926 | * subscribe to subsequent osdmap updates if full to ensure | |
3927 | * we find out when we are no longer full and stop returning | |
3928 | * ENOSPC. | |
3929 | */ | |
b7ec35b3 ID |
3930 | pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); |
3931 | pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || | |
3932 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || | |
42c1b124 | 3933 | have_pool_full(osdc); |
58eb7932 JL |
3934 | if (was_pauserd || was_pausewr || pauserd || pausewr || |
3935 | osdc->osdmap->epoch < osdc->epoch_barrier) | |
42c1b124 | 3936 | maybe_request_map(osdc); |
cd634fb6 | 3937 | |
5aea3dcd | 3938 | kick_requests(osdc, &need_resend, &need_resend_linger); |
42c1b124 | 3939 | |
fc36d0a4 | 3940 | ceph_osdc_abort_on_full(osdc); |
42c1b124 ID |
3941 | ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, |
3942 | osdc->osdmap->epoch); | |
5aea3dcd | 3943 | up_write(&osdc->lock); |
03066f23 | 3944 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
3945 | return; |
3946 | ||
3947 | bad: | |
3948 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 3949 | ceph_msg_dump(msg); |
5aea3dcd ID |
3950 | up_write(&osdc->lock); |
3951 | } | |
3952 | ||
3953 | /* | |
3954 | * Resubmit requests pending on the given osd. | |
3955 | */ | |
3956 | static void kick_osd_requests(struct ceph_osd *osd) | |
3957 | { | |
3958 | struct rb_node *n; | |
3959 | ||
a02a946d ID |
3960 | clear_backoffs(osd); |
3961 | ||
922dab61 | 3962 | for (n = rb_first(&osd->o_requests); n; ) { |
5aea3dcd ID |
3963 | struct ceph_osd_request *req = |
3964 | rb_entry(n, struct ceph_osd_request, r_node); | |
3965 | ||
922dab61 ID |
3966 | n = rb_next(n); /* cancel_linger_request() */ |
3967 | ||
5aea3dcd ID |
3968 | if (!req->r_linger) { |
3969 | if (!req->r_t.paused) | |
3970 | send_request(req); | |
922dab61 ID |
3971 | } else { |
3972 | cancel_linger_request(req); | |
5aea3dcd ID |
3973 | } |
3974 | } | |
922dab61 ID |
3975 | for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { |
3976 | struct ceph_osd_linger_request *lreq = | |
3977 | rb_entry(n, struct ceph_osd_linger_request, node); | |
3978 | ||
3979 | send_linger(lreq); | |
3980 | } | |
5aea3dcd ID |
3981 | } |
3982 | ||
3983 | /* | |
3984 | * If the osd connection drops, we need to resubmit all requests. | |
3985 | */ | |
3986 | static void osd_fault(struct ceph_connection *con) | |
3987 | { | |
3988 | struct ceph_osd *osd = con->private; | |
3989 | struct ceph_osd_client *osdc = osd->o_osdc; | |
3990 | ||
3991 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
3992 | ||
3993 | down_write(&osdc->lock); | |
3994 | if (!osd_registered(osd)) { | |
3995 | dout("%s osd%d unknown\n", __func__, osd->o_osd); | |
3996 | goto out_unlock; | |
3997 | } | |
3998 | ||
3999 | if (!reopen_osd(osd)) | |
4000 | kick_osd_requests(osd); | |
4001 | maybe_request_map(osdc); | |
4002 | ||
4003 | out_unlock: | |
4004 | up_write(&osdc->lock); | |
f24e9980 SW |
4005 | } |
4006 | ||
a02a946d ID |
4007 | struct MOSDBackoff { |
4008 | struct ceph_spg spgid; | |
4009 | u32 map_epoch; | |
4010 | u8 op; | |
4011 | u64 id; | |
4012 | struct ceph_hobject_id *begin; | |
4013 | struct ceph_hobject_id *end; | |
4014 | }; | |
4015 | ||
4016 | static int decode_MOSDBackoff(const struct ceph_msg *msg, struct MOSDBackoff *m) | |
4017 | { | |
4018 | void *p = msg->front.iov_base; | |
4019 | void *const end = p + msg->front.iov_len; | |
4020 | u8 struct_v; | |
4021 | u32 struct_len; | |
4022 | int ret; | |
4023 | ||
4024 | ret = ceph_start_decoding(&p, end, 1, "spg_t", &struct_v, &struct_len); | |
4025 | if (ret) | |
4026 | return ret; | |
4027 | ||
4028 | ret = ceph_decode_pgid(&p, end, &m->spgid.pgid); | |
4029 | if (ret) | |
4030 | return ret; | |
4031 | ||
4032 | ceph_decode_8_safe(&p, end, m->spgid.shard, e_inval); | |
4033 | ceph_decode_32_safe(&p, end, m->map_epoch, e_inval); | |
4034 | ceph_decode_8_safe(&p, end, m->op, e_inval); | |
4035 | ceph_decode_64_safe(&p, end, m->id, e_inval); | |
4036 | ||
4037 | m->begin = kzalloc(sizeof(*m->begin), GFP_NOIO); | |
4038 | if (!m->begin) | |
4039 | return -ENOMEM; | |
4040 | ||
4041 | ret = decode_hoid(&p, end, m->begin); | |
4042 | if (ret) { | |
4043 | free_hoid(m->begin); | |
4044 | return ret; | |
4045 | } | |
4046 | ||
4047 | m->end = kzalloc(sizeof(*m->end), GFP_NOIO); | |
4048 | if (!m->end) { | |
4049 | free_hoid(m->begin); | |
4050 | return -ENOMEM; | |
4051 | } | |
4052 | ||
4053 | ret = decode_hoid(&p, end, m->end); | |
4054 | if (ret) { | |
4055 | free_hoid(m->begin); | |
4056 | free_hoid(m->end); | |
4057 | return ret; | |
4058 | } | |
4059 | ||
4060 | return 0; | |
4061 | ||
4062 | e_inval: | |
4063 | return -EINVAL; | |
4064 | } | |
4065 | ||
4066 | static struct ceph_msg *create_backoff_message( | |
4067 | const struct ceph_osd_backoff *backoff, | |
4068 | u32 map_epoch) | |
4069 | { | |
4070 | struct ceph_msg *msg; | |
4071 | void *p, *end; | |
4072 | int msg_size; | |
4073 | ||
4074 | msg_size = CEPH_ENCODING_START_BLK_LEN + | |
4075 | CEPH_PGID_ENCODING_LEN + 1; /* spgid */ | |
4076 | msg_size += 4 + 1 + 8; /* map_epoch, op, id */ | |
4077 | msg_size += CEPH_ENCODING_START_BLK_LEN + | |
4078 | hoid_encoding_size(backoff->begin); | |
4079 | msg_size += CEPH_ENCODING_START_BLK_LEN + | |
4080 | hoid_encoding_size(backoff->end); | |
4081 | ||
4082 | msg = ceph_msg_new(CEPH_MSG_OSD_BACKOFF, msg_size, GFP_NOIO, true); | |
4083 | if (!msg) | |
4084 | return NULL; | |
4085 | ||
4086 | p = msg->front.iov_base; | |
4087 | end = p + msg->front_alloc_len; | |
4088 | ||
4089 | encode_spgid(&p, &backoff->spgid); | |
4090 | ceph_encode_32(&p, map_epoch); | |
4091 | ceph_encode_8(&p, CEPH_OSD_BACKOFF_OP_ACK_BLOCK); | |
4092 | ceph_encode_64(&p, backoff->id); | |
4093 | encode_hoid(&p, end, backoff->begin); | |
4094 | encode_hoid(&p, end, backoff->end); | |
4095 | BUG_ON(p != end); | |
4096 | ||
4097 | msg->front.iov_len = p - msg->front.iov_base; | |
4098 | msg->hdr.version = cpu_to_le16(1); /* MOSDBackoff v1 */ | |
4099 | msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); | |
4100 | ||
4101 | return msg; | |
4102 | } | |
4103 | ||
4104 | static void handle_backoff_block(struct ceph_osd *osd, struct MOSDBackoff *m) | |
4105 | { | |
4106 | struct ceph_spg_mapping *spg; | |
4107 | struct ceph_osd_backoff *backoff; | |
4108 | struct ceph_msg *msg; | |
4109 | ||
4110 | dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, | |
4111 | m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); | |
4112 | ||
4113 | spg = lookup_spg_mapping(&osd->o_backoff_mappings, &m->spgid); | |
4114 | if (!spg) { | |
4115 | spg = alloc_spg_mapping(); | |
4116 | if (!spg) { | |
4117 | pr_err("%s failed to allocate spg\n", __func__); | |
4118 | return; | |
4119 | } | |
4120 | spg->spgid = m->spgid; /* struct */ | |
4121 | insert_spg_mapping(&osd->o_backoff_mappings, spg); | |
4122 | } | |
4123 | ||
4124 | backoff = alloc_backoff(); | |
4125 | if (!backoff) { | |
4126 | pr_err("%s failed to allocate backoff\n", __func__); | |
4127 | return; | |
4128 | } | |
4129 | backoff->spgid = m->spgid; /* struct */ | |
4130 | backoff->id = m->id; | |
4131 | backoff->begin = m->begin; | |
4132 | m->begin = NULL; /* backoff now owns this */ | |
4133 | backoff->end = m->end; | |
4134 | m->end = NULL; /* ditto */ | |
4135 | ||
4136 | insert_backoff(&spg->backoffs, backoff); | |
4137 | insert_backoff_by_id(&osd->o_backoffs_by_id, backoff); | |
4138 | ||
4139 | /* | |
4140 | * Ack with original backoff's epoch so that the OSD can | |
4141 | * discard this if there was a PG split. | |
4142 | */ | |
4143 | msg = create_backoff_message(backoff, m->map_epoch); | |
4144 | if (!msg) { | |
4145 | pr_err("%s failed to allocate msg\n", __func__); | |
4146 | return; | |
4147 | } | |
4148 | ceph_con_send(&osd->o_con, msg); | |
4149 | } | |
4150 | ||
4151 | static bool target_contained_by(const struct ceph_osd_request_target *t, | |
4152 | const struct ceph_hobject_id *begin, | |
4153 | const struct ceph_hobject_id *end) | |
4154 | { | |
4155 | struct ceph_hobject_id hoid; | |
4156 | int cmp; | |
4157 | ||
4158 | hoid_fill_from_target(&hoid, t); | |
4159 | cmp = hoid_compare(&hoid, begin); | |
4160 | return !cmp || (cmp > 0 && hoid_compare(&hoid, end) < 0); | |
4161 | } | |
4162 | ||
4163 | static void handle_backoff_unblock(struct ceph_osd *osd, | |
4164 | const struct MOSDBackoff *m) | |
4165 | { | |
4166 | struct ceph_spg_mapping *spg; | |
4167 | struct ceph_osd_backoff *backoff; | |
4168 | struct rb_node *n; | |
4169 | ||
4170 | dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, | |
4171 | m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); | |
4172 | ||
4173 | backoff = lookup_backoff_by_id(&osd->o_backoffs_by_id, m->id); | |
4174 | if (!backoff) { | |
4175 | pr_err("%s osd%d spgid %llu.%xs%d id %llu backoff dne\n", | |
4176 | __func__, osd->o_osd, m->spgid.pgid.pool, | |
4177 | m->spgid.pgid.seed, m->spgid.shard, m->id); | |
4178 | return; | |
4179 | } | |
4180 | ||
4181 | if (hoid_compare(backoff->begin, m->begin) && | |
4182 | hoid_compare(backoff->end, m->end)) { | |
4183 | pr_err("%s osd%d spgid %llu.%xs%d id %llu bad range?\n", | |
4184 | __func__, osd->o_osd, m->spgid.pgid.pool, | |
4185 | m->spgid.pgid.seed, m->spgid.shard, m->id); | |
4186 | /* unblock it anyway... */ | |
4187 | } | |
4188 | ||
4189 | spg = lookup_spg_mapping(&osd->o_backoff_mappings, &backoff->spgid); | |
4190 | BUG_ON(!spg); | |
4191 | ||
4192 | erase_backoff(&spg->backoffs, backoff); | |
4193 | erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); | |
4194 | free_backoff(backoff); | |
4195 | ||
4196 | if (RB_EMPTY_ROOT(&spg->backoffs)) { | |
4197 | erase_spg_mapping(&osd->o_backoff_mappings, spg); | |
4198 | free_spg_mapping(spg); | |
4199 | } | |
4200 | ||
4201 | for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { | |
4202 | struct ceph_osd_request *req = | |
4203 | rb_entry(n, struct ceph_osd_request, r_node); | |
4204 | ||
4205 | if (!ceph_spg_compare(&req->r_t.spgid, &m->spgid)) { | |
4206 | /* | |
4207 | * Match against @m, not @backoff -- the PG may | |
4208 | * have split on the OSD. | |
4209 | */ | |
4210 | if (target_contained_by(&req->r_t, m->begin, m->end)) { | |
4211 | /* | |
4212 | * If no other installed backoff applies, | |
4213 | * resend. | |
4214 | */ | |
4215 | send_request(req); | |
4216 | } | |
4217 | } | |
4218 | } | |
4219 | } | |
4220 | ||
4221 | static void handle_backoff(struct ceph_osd *osd, struct ceph_msg *msg) | |
4222 | { | |
4223 | struct ceph_osd_client *osdc = osd->o_osdc; | |
4224 | struct MOSDBackoff m; | |
4225 | int ret; | |
4226 | ||
4227 | down_read(&osdc->lock); | |
4228 | if (!osd_registered(osd)) { | |
4229 | dout("%s osd%d unknown\n", __func__, osd->o_osd); | |
4230 | up_read(&osdc->lock); | |
4231 | return; | |
4232 | } | |
4233 | WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); | |
4234 | ||
4235 | mutex_lock(&osd->lock); | |
4236 | ret = decode_MOSDBackoff(msg, &m); | |
4237 | if (ret) { | |
4238 | pr_err("failed to decode MOSDBackoff: %d\n", ret); | |
4239 | ceph_msg_dump(msg); | |
4240 | goto out_unlock; | |
4241 | } | |
4242 | ||
4243 | switch (m.op) { | |
4244 | case CEPH_OSD_BACKOFF_OP_BLOCK: | |
4245 | handle_backoff_block(osd, &m); | |
4246 | break; | |
4247 | case CEPH_OSD_BACKOFF_OP_UNBLOCK: | |
4248 | handle_backoff_unblock(osd, &m); | |
4249 | break; | |
4250 | default: | |
4251 | pr_err("%s osd%d unknown op %d\n", __func__, osd->o_osd, m.op); | |
4252 | } | |
4253 | ||
4254 | free_hoid(m.begin); | |
4255 | free_hoid(m.end); | |
4256 | ||
4257 | out_unlock: | |
4258 | mutex_unlock(&osd->lock); | |
4259 | up_read(&osdc->lock); | |
4260 | } | |
4261 | ||
a40c4f10 YS |
4262 | /* |
4263 | * Process osd watch notifications | |
4264 | */ | |
3c663bbd AE |
4265 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
4266 | struct ceph_msg *msg) | |
a40c4f10 | 4267 | { |
922dab61 ID |
4268 | void *p = msg->front.iov_base; |
4269 | void *const end = p + msg->front.iov_len; | |
4270 | struct ceph_osd_linger_request *lreq; | |
4271 | struct linger_work *lwork; | |
4272 | u8 proto_ver, opcode; | |
4273 | u64 cookie, notify_id; | |
4274 | u64 notifier_id = 0; | |
19079203 | 4275 | s32 return_code = 0; |
922dab61 ID |
4276 | void *payload = NULL; |
4277 | u32 payload_len = 0; | |
a40c4f10 YS |
4278 | |
4279 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
4280 | ceph_decode_8_safe(&p, end, opcode, bad); | |
4281 | ceph_decode_64_safe(&p, end, cookie, bad); | |
922dab61 | 4282 | p += 8; /* skip ver */ |
a40c4f10 YS |
4283 | ceph_decode_64_safe(&p, end, notify_id, bad); |
4284 | ||
922dab61 ID |
4285 | if (proto_ver >= 1) { |
4286 | ceph_decode_32_safe(&p, end, payload_len, bad); | |
4287 | ceph_decode_need(&p, end, payload_len, bad); | |
4288 | payload = p; | |
4289 | p += payload_len; | |
4290 | } | |
4291 | ||
4292 | if (le16_to_cpu(msg->hdr.version) >= 2) | |
19079203 | 4293 | ceph_decode_32_safe(&p, end, return_code, bad); |
922dab61 ID |
4294 | |
4295 | if (le16_to_cpu(msg->hdr.version) >= 3) | |
4296 | ceph_decode_64_safe(&p, end, notifier_id, bad); | |
4297 | ||
4298 | down_read(&osdc->lock); | |
4299 | lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); | |
4300 | if (!lreq) { | |
4301 | dout("%s opcode %d cookie %llu dne\n", __func__, opcode, | |
4302 | cookie); | |
4303 | goto out_unlock_osdc; | |
4304 | } | |
4305 | ||
4306 | mutex_lock(&lreq->lock); | |
19079203 ID |
4307 | dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, |
4308 | opcode, cookie, lreq, lreq->is_watch); | |
922dab61 ID |
4309 | if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { |
4310 | if (!lreq->last_error) { | |
4311 | lreq->last_error = -ENOTCONN; | |
4312 | queue_watch_error(lreq); | |
4313 | } | |
19079203 ID |
4314 | } else if (!lreq->is_watch) { |
4315 | /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ | |
4316 | if (lreq->notify_id && lreq->notify_id != notify_id) { | |
4317 | dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, | |
4318 | lreq->notify_id, notify_id); | |
4319 | } else if (!completion_done(&lreq->notify_finish_wait)) { | |
4320 | struct ceph_msg_data *data = | |
4321 | list_first_entry_or_null(&msg->data, | |
4322 | struct ceph_msg_data, | |
4323 | links); | |
4324 | ||
4325 | if (data) { | |
4326 | if (lreq->preply_pages) { | |
4327 | WARN_ON(data->type != | |
4328 | CEPH_MSG_DATA_PAGES); | |
4329 | *lreq->preply_pages = data->pages; | |
4330 | *lreq->preply_len = data->length; | |
4331 | } else { | |
4332 | ceph_release_page_vector(data->pages, | |
4333 | calc_pages_for(0, data->length)); | |
4334 | } | |
4335 | } | |
4336 | lreq->notify_finish_error = return_code; | |
4337 | complete_all(&lreq->notify_finish_wait); | |
4338 | } | |
922dab61 ID |
4339 | } else { |
4340 | /* CEPH_WATCH_EVENT_NOTIFY */ | |
4341 | lwork = lwork_alloc(lreq, do_watch_notify); | |
4342 | if (!lwork) { | |
4343 | pr_err("failed to allocate notify-lwork\n"); | |
4344 | goto out_unlock_lreq; | |
a40c4f10 | 4345 | } |
a40c4f10 | 4346 | |
922dab61 ID |
4347 | lwork->notify.notify_id = notify_id; |
4348 | lwork->notify.notifier_id = notifier_id; | |
4349 | lwork->notify.payload = payload; | |
4350 | lwork->notify.payload_len = payload_len; | |
4351 | lwork->notify.msg = ceph_msg_get(msg); | |
4352 | lwork_queue(lwork); | |
91883cd2 | 4353 | } |
a40c4f10 | 4354 | |
922dab61 ID |
4355 | out_unlock_lreq: |
4356 | mutex_unlock(&lreq->lock); | |
4357 | out_unlock_osdc: | |
4358 | up_read(&osdc->lock); | |
a40c4f10 YS |
4359 | return; |
4360 | ||
4361 | bad: | |
4362 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
a40c4f10 YS |
4363 | } |
4364 | ||
70636773 AE |
4365 | /* |
4366 | * Register request, send initial attempt. | |
4367 | */ | |
4368 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
4369 | struct ceph_osd_request *req, | |
4370 | bool nofail) | |
4371 | { | |
5aea3dcd ID |
4372 | down_read(&osdc->lock); |
4373 | submit_request(req, false); | |
4374 | up_read(&osdc->lock); | |
0bbfdfe8 | 4375 | |
5aea3dcd | 4376 | return 0; |
f24e9980 | 4377 | } |
3d14c5d2 | 4378 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 | 4379 | |
c9f9b93d | 4380 | /* |
c297eb42 ID |
4381 | * Unregister a registered request. The request is not completed: |
4382 | * ->r_result isn't set and __complete_request() isn't called. | |
c9f9b93d ID |
4383 | */ |
4384 | void ceph_osdc_cancel_request(struct ceph_osd_request *req) | |
4385 | { | |
4386 | struct ceph_osd_client *osdc = req->r_osdc; | |
4387 | ||
5aea3dcd | 4388 | down_write(&osdc->lock); |
5aea3dcd ID |
4389 | if (req->r_osd) |
4390 | cancel_request(req); | |
4391 | up_write(&osdc->lock); | |
c9f9b93d ID |
4392 | } |
4393 | EXPORT_SYMBOL(ceph_osdc_cancel_request); | |
4394 | ||
f24e9980 | 4395 | /* |
42b06965 | 4396 | * @timeout: in jiffies, 0 means "wait forever" |
f24e9980 | 4397 | */ |
42b06965 ID |
4398 | static int wait_request_timeout(struct ceph_osd_request *req, |
4399 | unsigned long timeout) | |
f24e9980 | 4400 | { |
42b06965 | 4401 | long left; |
c9f9b93d | 4402 | |
42b06965 | 4403 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); |
0e76abf2 | 4404 | left = wait_for_completion_killable_timeout(&req->r_completion, |
42b06965 ID |
4405 | ceph_timeout_jiffies(timeout)); |
4406 | if (left <= 0) { | |
4407 | left = left ?: -ETIMEDOUT; | |
c9f9b93d | 4408 | ceph_osdc_cancel_request(req); |
42b06965 ID |
4409 | } else { |
4410 | left = req->r_result; /* completed */ | |
f24e9980 SW |
4411 | } |
4412 | ||
42b06965 ID |
4413 | return left; |
4414 | } | |
4415 | ||
4416 | /* | |
4417 | * wait for a request to complete | |
4418 | */ | |
4419 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
4420 | struct ceph_osd_request *req) | |
4421 | { | |
4422 | return wait_request_timeout(req, 0); | |
f24e9980 | 4423 | } |
3d14c5d2 | 4424 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
4425 | |
4426 | /* | |
4427 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
4428 | */ | |
4429 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
4430 | { | |
5aea3dcd ID |
4431 | struct rb_node *n, *p; |
4432 | u64 last_tid = atomic64_read(&osdc->last_tid); | |
f24e9980 | 4433 | |
5aea3dcd ID |
4434 | again: |
4435 | down_read(&osdc->lock); | |
4436 | for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { | |
4437 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
4438 | ||
4439 | mutex_lock(&osd->lock); | |
4440 | for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { | |
4441 | struct ceph_osd_request *req = | |
4442 | rb_entry(p, struct ceph_osd_request, r_node); | |
4443 | ||
4444 | if (req->r_tid > last_tid) | |
4445 | break; | |
4446 | ||
4447 | if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) | |
4448 | continue; | |
f24e9980 | 4449 | |
5aea3dcd ID |
4450 | ceph_osdc_get_request(req); |
4451 | mutex_unlock(&osd->lock); | |
4452 | up_read(&osdc->lock); | |
4453 | dout("%s waiting on req %p tid %llu last_tid %llu\n", | |
4454 | __func__, req, req->r_tid, last_tid); | |
b18b9550 | 4455 | wait_for_completion(&req->r_completion); |
5aea3dcd ID |
4456 | ceph_osdc_put_request(req); |
4457 | goto again; | |
4458 | } | |
f24e9980 | 4459 | |
5aea3dcd | 4460 | mutex_unlock(&osd->lock); |
f24e9980 | 4461 | } |
5aea3dcd ID |
4462 | |
4463 | up_read(&osdc->lock); | |
4464 | dout("%s done last_tid %llu\n", __func__, last_tid); | |
f24e9980 | 4465 | } |
3d14c5d2 | 4466 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 | 4467 | |
922dab61 ID |
4468 | static struct ceph_osd_request * |
4469 | alloc_linger_request(struct ceph_osd_linger_request *lreq) | |
4470 | { | |
4471 | struct ceph_osd_request *req; | |
4472 | ||
4473 | req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); | |
4474 | if (!req) | |
4475 | return NULL; | |
4476 | ||
4477 | ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); | |
4478 | ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); | |
4479 | ||
4480 | if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { | |
4481 | ceph_osdc_put_request(req); | |
4482 | return NULL; | |
4483 | } | |
4484 | ||
4485 | return req; | |
4486 | } | |
4487 | ||
4488 | /* | |
4489 | * Returns a handle, caller owns a ref. | |
4490 | */ | |
4491 | struct ceph_osd_linger_request * | |
4492 | ceph_osdc_watch(struct ceph_osd_client *osdc, | |
4493 | struct ceph_object_id *oid, | |
4494 | struct ceph_object_locator *oloc, | |
4495 | rados_watchcb2_t wcb, | |
4496 | rados_watcherrcb_t errcb, | |
4497 | void *data) | |
4498 | { | |
4499 | struct ceph_osd_linger_request *lreq; | |
4500 | int ret; | |
4501 | ||
4502 | lreq = linger_alloc(osdc); | |
4503 | if (!lreq) | |
4504 | return ERR_PTR(-ENOMEM); | |
4505 | ||
19079203 | 4506 | lreq->is_watch = true; |
922dab61 ID |
4507 | lreq->wcb = wcb; |
4508 | lreq->errcb = errcb; | |
4509 | lreq->data = data; | |
b07d3c4b | 4510 | lreq->watch_valid_thru = jiffies; |
922dab61 ID |
4511 | |
4512 | ceph_oid_copy(&lreq->t.base_oid, oid); | |
4513 | ceph_oloc_copy(&lreq->t.base_oloc, oloc); | |
54ea0046 | 4514 | lreq->t.flags = CEPH_OSD_FLAG_WRITE; |
fac02ddf | 4515 | ktime_get_real_ts64(&lreq->mtime); |
922dab61 ID |
4516 | |
4517 | lreq->reg_req = alloc_linger_request(lreq); | |
4518 | if (!lreq->reg_req) { | |
4519 | ret = -ENOMEM; | |
4520 | goto err_put_lreq; | |
4521 | } | |
4522 | ||
4523 | lreq->ping_req = alloc_linger_request(lreq); | |
4524 | if (!lreq->ping_req) { | |
4525 | ret = -ENOMEM; | |
4526 | goto err_put_lreq; | |
4527 | } | |
4528 | ||
4529 | down_write(&osdc->lock); | |
4530 | linger_register(lreq); /* before osd_req_op_* */ | |
4531 | osd_req_op_watch_init(lreq->reg_req, 0, lreq->linger_id, | |
4532 | CEPH_OSD_WATCH_OP_WATCH); | |
4533 | osd_req_op_watch_init(lreq->ping_req, 0, lreq->linger_id, | |
4534 | CEPH_OSD_WATCH_OP_PING); | |
4535 | linger_submit(lreq); | |
4536 | up_write(&osdc->lock); | |
4537 | ||
4538 | ret = linger_reg_commit_wait(lreq); | |
4539 | if (ret) { | |
4540 | linger_cancel(lreq); | |
4541 | goto err_put_lreq; | |
4542 | } | |
4543 | ||
4544 | return lreq; | |
4545 | ||
4546 | err_put_lreq: | |
4547 | linger_put(lreq); | |
4548 | return ERR_PTR(ret); | |
4549 | } | |
4550 | EXPORT_SYMBOL(ceph_osdc_watch); | |
4551 | ||
4552 | /* | |
4553 | * Releases a ref. | |
4554 | * | |
4555 | * Times out after mount_timeout to preserve rbd unmap behaviour | |
4556 | * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap | |
4557 | * with mount_timeout"). | |
4558 | */ | |
4559 | int ceph_osdc_unwatch(struct ceph_osd_client *osdc, | |
4560 | struct ceph_osd_linger_request *lreq) | |
4561 | { | |
4562 | struct ceph_options *opts = osdc->client->options; | |
4563 | struct ceph_osd_request *req; | |
4564 | int ret; | |
4565 | ||
4566 | req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); | |
4567 | if (!req) | |
4568 | return -ENOMEM; | |
4569 | ||
4570 | ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); | |
4571 | ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); | |
54ea0046 | 4572 | req->r_flags = CEPH_OSD_FLAG_WRITE; |
fac02ddf | 4573 | ktime_get_real_ts64(&req->r_mtime); |
922dab61 ID |
4574 | osd_req_op_watch_init(req, 0, lreq->linger_id, |
4575 | CEPH_OSD_WATCH_OP_UNWATCH); | |
4576 | ||
4577 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); | |
4578 | if (ret) | |
4579 | goto out_put_req; | |
4580 | ||
4581 | ceph_osdc_start_request(osdc, req, false); | |
4582 | linger_cancel(lreq); | |
4583 | linger_put(lreq); | |
4584 | ret = wait_request_timeout(req, opts->mount_timeout); | |
4585 | ||
4586 | out_put_req: | |
4587 | ceph_osdc_put_request(req); | |
4588 | return ret; | |
4589 | } | |
4590 | EXPORT_SYMBOL(ceph_osdc_unwatch); | |
4591 | ||
4592 | static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, | |
4593 | u64 notify_id, u64 cookie, void *payload, | |
6d54228f | 4594 | u32 payload_len) |
922dab61 ID |
4595 | { |
4596 | struct ceph_osd_req_op *op; | |
4597 | struct ceph_pagelist *pl; | |
4598 | int ret; | |
4599 | ||
4600 | op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); | |
4601 | ||
4602 | pl = kmalloc(sizeof(*pl), GFP_NOIO); | |
4603 | if (!pl) | |
4604 | return -ENOMEM; | |
4605 | ||
4606 | ceph_pagelist_init(pl); | |
4607 | ret = ceph_pagelist_encode_64(pl, notify_id); | |
4608 | ret |= ceph_pagelist_encode_64(pl, cookie); | |
4609 | if (payload) { | |
4610 | ret |= ceph_pagelist_encode_32(pl, payload_len); | |
4611 | ret |= ceph_pagelist_append(pl, payload, payload_len); | |
4612 | } else { | |
4613 | ret |= ceph_pagelist_encode_32(pl, 0); | |
4614 | } | |
4615 | if (ret) { | |
4616 | ceph_pagelist_release(pl); | |
4617 | return -ENOMEM; | |
4618 | } | |
4619 | ||
4620 | ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); | |
4621 | op->indata_len = pl->length; | |
4622 | return 0; | |
4623 | } | |
4624 | ||
4625 | int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, | |
4626 | struct ceph_object_id *oid, | |
4627 | struct ceph_object_locator *oloc, | |
4628 | u64 notify_id, | |
4629 | u64 cookie, | |
4630 | void *payload, | |
6d54228f | 4631 | u32 payload_len) |
922dab61 ID |
4632 | { |
4633 | struct ceph_osd_request *req; | |
4634 | int ret; | |
4635 | ||
4636 | req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); | |
4637 | if (!req) | |
4638 | return -ENOMEM; | |
4639 | ||
4640 | ceph_oid_copy(&req->r_base_oid, oid); | |
4641 | ceph_oloc_copy(&req->r_base_oloc, oloc); | |
4642 | req->r_flags = CEPH_OSD_FLAG_READ; | |
4643 | ||
4644 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); | |
4645 | if (ret) | |
4646 | goto out_put_req; | |
4647 | ||
4648 | ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, | |
4649 | payload_len); | |
4650 | if (ret) | |
4651 | goto out_put_req; | |
4652 | ||
4653 | ceph_osdc_start_request(osdc, req, false); | |
4654 | ret = ceph_osdc_wait_request(osdc, req); | |
4655 | ||
4656 | out_put_req: | |
4657 | ceph_osdc_put_request(req); | |
4658 | return ret; | |
4659 | } | |
4660 | EXPORT_SYMBOL(ceph_osdc_notify_ack); | |
4661 | ||
19079203 ID |
4662 | static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, |
4663 | u64 cookie, u32 prot_ver, u32 timeout, | |
6d54228f | 4664 | void *payload, u32 payload_len) |
19079203 ID |
4665 | { |
4666 | struct ceph_osd_req_op *op; | |
4667 | struct ceph_pagelist *pl; | |
4668 | int ret; | |
4669 | ||
4670 | op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); | |
4671 | op->notify.cookie = cookie; | |
4672 | ||
4673 | pl = kmalloc(sizeof(*pl), GFP_NOIO); | |
4674 | if (!pl) | |
4675 | return -ENOMEM; | |
4676 | ||
4677 | ceph_pagelist_init(pl); | |
4678 | ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ | |
4679 | ret |= ceph_pagelist_encode_32(pl, timeout); | |
4680 | ret |= ceph_pagelist_encode_32(pl, payload_len); | |
4681 | ret |= ceph_pagelist_append(pl, payload, payload_len); | |
4682 | if (ret) { | |
4683 | ceph_pagelist_release(pl); | |
4684 | return -ENOMEM; | |
4685 | } | |
4686 | ||
4687 | ceph_osd_data_pagelist_init(&op->notify.request_data, pl); | |
4688 | op->indata_len = pl->length; | |
4689 | return 0; | |
4690 | } | |
4691 | ||
4692 | /* | |
4693 | * @timeout: in seconds | |
4694 | * | |
4695 | * @preply_{pages,len} are initialized both on success and error. | |
4696 | * The caller is responsible for: | |
4697 | * | |
4698 | * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) | |
4699 | */ | |
4700 | int ceph_osdc_notify(struct ceph_osd_client *osdc, | |
4701 | struct ceph_object_id *oid, | |
4702 | struct ceph_object_locator *oloc, | |
4703 | void *payload, | |
6d54228f | 4704 | u32 payload_len, |
19079203 ID |
4705 | u32 timeout, |
4706 | struct page ***preply_pages, | |
4707 | size_t *preply_len) | |
4708 | { | |
4709 | struct ceph_osd_linger_request *lreq; | |
4710 | struct page **pages; | |
4711 | int ret; | |
4712 | ||
4713 | WARN_ON(!timeout); | |
4714 | if (preply_pages) { | |
4715 | *preply_pages = NULL; | |
4716 | *preply_len = 0; | |
4717 | } | |
4718 | ||
4719 | lreq = linger_alloc(osdc); | |
4720 | if (!lreq) | |
4721 | return -ENOMEM; | |
4722 | ||
4723 | lreq->preply_pages = preply_pages; | |
4724 | lreq->preply_len = preply_len; | |
4725 | ||
4726 | ceph_oid_copy(&lreq->t.base_oid, oid); | |
4727 | ceph_oloc_copy(&lreq->t.base_oloc, oloc); | |
4728 | lreq->t.flags = CEPH_OSD_FLAG_READ; | |
4729 | ||
4730 | lreq->reg_req = alloc_linger_request(lreq); | |
4731 | if (!lreq->reg_req) { | |
4732 | ret = -ENOMEM; | |
4733 | goto out_put_lreq; | |
4734 | } | |
4735 | ||
4736 | /* for notify_id */ | |
4737 | pages = ceph_alloc_page_vector(1, GFP_NOIO); | |
4738 | if (IS_ERR(pages)) { | |
4739 | ret = PTR_ERR(pages); | |
4740 | goto out_put_lreq; | |
4741 | } | |
4742 | ||
4743 | down_write(&osdc->lock); | |
4744 | linger_register(lreq); /* before osd_req_op_* */ | |
4745 | ret = osd_req_op_notify_init(lreq->reg_req, 0, lreq->linger_id, 1, | |
4746 | timeout, payload, payload_len); | |
4747 | if (ret) { | |
4748 | linger_unregister(lreq); | |
4749 | up_write(&osdc->lock); | |
4750 | ceph_release_page_vector(pages, 1); | |
4751 | goto out_put_lreq; | |
4752 | } | |
4753 | ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, | |
4754 | response_data), | |
4755 | pages, PAGE_SIZE, 0, false, true); | |
4756 | linger_submit(lreq); | |
4757 | up_write(&osdc->lock); | |
4758 | ||
4759 | ret = linger_reg_commit_wait(lreq); | |
4760 | if (!ret) | |
4761 | ret = linger_notify_finish_wait(lreq); | |
4762 | else | |
4763 | dout("lreq %p failed to initiate notify %d\n", lreq, ret); | |
4764 | ||
4765 | linger_cancel(lreq); | |
4766 | out_put_lreq: | |
4767 | linger_put(lreq); | |
4768 | return ret; | |
4769 | } | |
4770 | EXPORT_SYMBOL(ceph_osdc_notify); | |
4771 | ||
b07d3c4b ID |
4772 | /* |
4773 | * Return the number of milliseconds since the watch was last | |
4774 | * confirmed, or an error. If there is an error, the watch is no | |
4775 | * longer valid, and should be destroyed with ceph_osdc_unwatch(). | |
4776 | */ | |
4777 | int ceph_osdc_watch_check(struct ceph_osd_client *osdc, | |
4778 | struct ceph_osd_linger_request *lreq) | |
4779 | { | |
4780 | unsigned long stamp, age; | |
4781 | int ret; | |
4782 | ||
4783 | down_read(&osdc->lock); | |
4784 | mutex_lock(&lreq->lock); | |
4785 | stamp = lreq->watch_valid_thru; | |
4786 | if (!list_empty(&lreq->pending_lworks)) { | |
4787 | struct linger_work *lwork = | |
4788 | list_first_entry(&lreq->pending_lworks, | |
4789 | struct linger_work, | |
4790 | pending_item); | |
4791 | ||
4792 | if (time_before(lwork->queued_stamp, stamp)) | |
4793 | stamp = lwork->queued_stamp; | |
4794 | } | |
4795 | age = jiffies - stamp; | |
4796 | dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, | |
4797 | lreq, lreq->linger_id, age, lreq->last_error); | |
4798 | /* we are truncating to msecs, so return a safe upper bound */ | |
4799 | ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); | |
4800 | ||
4801 | mutex_unlock(&lreq->lock); | |
4802 | up_read(&osdc->lock); | |
4803 | return ret; | |
4804 | } | |
4805 | ||
a4ed38d7 DF |
4806 | static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) |
4807 | { | |
4808 | u8 struct_v; | |
4809 | u32 struct_len; | |
4810 | int ret; | |
4811 | ||
4812 | ret = ceph_start_decoding(p, end, 2, "watch_item_t", | |
4813 | &struct_v, &struct_len); | |
4814 | if (ret) | |
4815 | return ret; | |
4816 | ||
4817 | ceph_decode_copy(p, &item->name, sizeof(item->name)); | |
4818 | item->cookie = ceph_decode_64(p); | |
4819 | *p += 4; /* skip timeout_seconds */ | |
4820 | if (struct_v >= 2) { | |
4821 | ceph_decode_copy(p, &item->addr, sizeof(item->addr)); | |
4822 | ceph_decode_addr(&item->addr); | |
4823 | } | |
4824 | ||
4825 | dout("%s %s%llu cookie %llu addr %s\n", __func__, | |
4826 | ENTITY_NAME(item->name), item->cookie, | |
4827 | ceph_pr_addr(&item->addr.in_addr)); | |
4828 | return 0; | |
4829 | } | |
4830 | ||
4831 | static int decode_watchers(void **p, void *end, | |
4832 | struct ceph_watch_item **watchers, | |
4833 | u32 *num_watchers) | |
4834 | { | |
4835 | u8 struct_v; | |
4836 | u32 struct_len; | |
4837 | int i; | |
4838 | int ret; | |
4839 | ||
4840 | ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t", | |
4841 | &struct_v, &struct_len); | |
4842 | if (ret) | |
4843 | return ret; | |
4844 | ||
4845 | *num_watchers = ceph_decode_32(p); | |
4846 | *watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO); | |
4847 | if (!*watchers) | |
4848 | return -ENOMEM; | |
4849 | ||
4850 | for (i = 0; i < *num_watchers; i++) { | |
4851 | ret = decode_watcher(p, end, *watchers + i); | |
4852 | if (ret) { | |
4853 | kfree(*watchers); | |
4854 | return ret; | |
4855 | } | |
4856 | } | |
4857 | ||
4858 | return 0; | |
4859 | } | |
4860 | ||
4861 | /* | |
4862 | * On success, the caller is responsible for: | |
4863 | * | |
4864 | * kfree(watchers); | |
4865 | */ | |
4866 | int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, | |
4867 | struct ceph_object_id *oid, | |
4868 | struct ceph_object_locator *oloc, | |
4869 | struct ceph_watch_item **watchers, | |
4870 | u32 *num_watchers) | |
4871 | { | |
4872 | struct ceph_osd_request *req; | |
4873 | struct page **pages; | |
4874 | int ret; | |
4875 | ||
4876 | req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); | |
4877 | if (!req) | |
4878 | return -ENOMEM; | |
4879 | ||
4880 | ceph_oid_copy(&req->r_base_oid, oid); | |
4881 | ceph_oloc_copy(&req->r_base_oloc, oloc); | |
4882 | req->r_flags = CEPH_OSD_FLAG_READ; | |
4883 | ||
4884 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); | |
4885 | if (ret) | |
4886 | goto out_put_req; | |
4887 | ||
4888 | pages = ceph_alloc_page_vector(1, GFP_NOIO); | |
4889 | if (IS_ERR(pages)) { | |
4890 | ret = PTR_ERR(pages); | |
4891 | goto out_put_req; | |
4892 | } | |
4893 | ||
4894 | osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0); | |
4895 | ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers, | |
4896 | response_data), | |
4897 | pages, PAGE_SIZE, 0, false, true); | |
4898 | ||
4899 | ceph_osdc_start_request(osdc, req, false); | |
4900 | ret = ceph_osdc_wait_request(osdc, req); | |
4901 | if (ret >= 0) { | |
4902 | void *p = page_address(pages[0]); | |
4903 | void *const end = p + req->r_ops[0].outdata_len; | |
4904 | ||
4905 | ret = decode_watchers(&p, end, watchers, num_watchers); | |
4906 | } | |
4907 | ||
4908 | out_put_req: | |
4909 | ceph_osdc_put_request(req); | |
4910 | return ret; | |
4911 | } | |
4912 | EXPORT_SYMBOL(ceph_osdc_list_watchers); | |
4913 | ||
dd935f44 JD |
4914 | /* |
4915 | * Call all pending notify callbacks - for use after a watch is | |
4916 | * unregistered, to make sure no more callbacks for it will be invoked | |
4917 | */ | |
f6479449 | 4918 | void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) |
dd935f44 | 4919 | { |
99d16943 | 4920 | dout("%s osdc %p\n", __func__, osdc); |
dd935f44 JD |
4921 | flush_workqueue(osdc->notify_wq); |
4922 | } | |
4923 | EXPORT_SYMBOL(ceph_osdc_flush_notifies); | |
4924 | ||
7cca78c9 ID |
4925 | void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) |
4926 | { | |
4927 | down_read(&osdc->lock); | |
4928 | maybe_request_map(osdc); | |
4929 | up_read(&osdc->lock); | |
4930 | } | |
4931 | EXPORT_SYMBOL(ceph_osdc_maybe_request_map); | |
dd935f44 | 4932 | |
428a7158 DF |
4933 | /* |
4934 | * Execute an OSD class method on an object. | |
4935 | * | |
4936 | * @flags: CEPH_OSD_FLAG_* | |
2544a020 | 4937 | * @resp_len: in/out param for reply length |
428a7158 DF |
4938 | */ |
4939 | int ceph_osdc_call(struct ceph_osd_client *osdc, | |
4940 | struct ceph_object_id *oid, | |
4941 | struct ceph_object_locator *oloc, | |
4942 | const char *class, const char *method, | |
4943 | unsigned int flags, | |
4944 | struct page *req_page, size_t req_len, | |
4945 | struct page *resp_page, size_t *resp_len) | |
4946 | { | |
4947 | struct ceph_osd_request *req; | |
4948 | int ret; | |
4949 | ||
2544a020 ID |
4950 | if (req_len > PAGE_SIZE || (resp_page && *resp_len > PAGE_SIZE)) |
4951 | return -E2BIG; | |
4952 | ||
428a7158 DF |
4953 | req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); |
4954 | if (!req) | |
4955 | return -ENOMEM; | |
4956 | ||
4957 | ceph_oid_copy(&req->r_base_oid, oid); | |
4958 | ceph_oloc_copy(&req->r_base_oloc, oloc); | |
4959 | req->r_flags = flags; | |
4960 | ||
4961 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); | |
4962 | if (ret) | |
4963 | goto out_put_req; | |
4964 | ||
fe943d50 CX |
4965 | ret = osd_req_op_cls_init(req, 0, CEPH_OSD_OP_CALL, class, method); |
4966 | if (ret) | |
4967 | goto out_put_req; | |
4968 | ||
428a7158 DF |
4969 | if (req_page) |
4970 | osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len, | |
4971 | 0, false, false); | |
4972 | if (resp_page) | |
4973 | osd_req_op_cls_response_data_pages(req, 0, &resp_page, | |
2544a020 | 4974 | *resp_len, 0, false, false); |
428a7158 DF |
4975 | |
4976 | ceph_osdc_start_request(osdc, req, false); | |
4977 | ret = ceph_osdc_wait_request(osdc, req); | |
4978 | if (ret >= 0) { | |
4979 | ret = req->r_ops[0].rval; | |
4980 | if (resp_page) | |
4981 | *resp_len = req->r_ops[0].outdata_len; | |
4982 | } | |
4983 | ||
4984 | out_put_req: | |
4985 | ceph_osdc_put_request(req); | |
4986 | return ret; | |
4987 | } | |
4988 | EXPORT_SYMBOL(ceph_osdc_call); | |
4989 | ||
f24e9980 SW |
4990 | /* |
4991 | * init, shutdown | |
4992 | */ | |
4993 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
4994 | { | |
4995 | int err; | |
4996 | ||
4997 | dout("init\n"); | |
4998 | osdc->client = client; | |
5aea3dcd | 4999 | init_rwsem(&osdc->lock); |
f24e9980 | 5000 | osdc->osds = RB_ROOT; |
f5a2041b | 5001 | INIT_LIST_HEAD(&osdc->osd_lru); |
9dd2845c | 5002 | spin_lock_init(&osdc->osd_lru_lock); |
5aea3dcd ID |
5003 | osd_init(&osdc->homeless_osd); |
5004 | osdc->homeless_osd.o_osdc = osdc; | |
5005 | osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; | |
264048af | 5006 | osdc->last_linger_id = CEPH_LINGER_ID_START; |
922dab61 | 5007 | osdc->linger_requests = RB_ROOT; |
4609245e ID |
5008 | osdc->map_checks = RB_ROOT; |
5009 | osdc->linger_map_checks = RB_ROOT; | |
f24e9980 | 5010 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); |
f5a2041b YS |
5011 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
5012 | ||
5f44f142 | 5013 | err = -ENOMEM; |
e5253a7b ID |
5014 | osdc->osdmap = ceph_osdmap_alloc(); |
5015 | if (!osdc->osdmap) | |
5016 | goto out; | |
5017 | ||
9e767adb ID |
5018 | osdc->req_mempool = mempool_create_slab_pool(10, |
5019 | ceph_osd_request_cache); | |
f24e9980 | 5020 | if (!osdc->req_mempool) |
e5253a7b | 5021 | goto out_map; |
f24e9980 | 5022 | |
d50b409f | 5023 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
711da55d | 5024 | PAGE_SIZE, 10, true, "osd_op"); |
f24e9980 | 5025 | if (err < 0) |
5f44f142 | 5026 | goto out_mempool; |
d50b409f | 5027 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
711da55d | 5028 | PAGE_SIZE, 10, true, "osd_op_reply"); |
c16e7869 SW |
5029 | if (err < 0) |
5030 | goto out_msgpool; | |
a40c4f10 | 5031 | |
dbcae088 | 5032 | err = -ENOMEM; |
a40c4f10 | 5033 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); |
dbcae088 | 5034 | if (!osdc->notify_wq) |
c172ec5c ID |
5035 | goto out_msgpool_reply; |
5036 | ||
88bc1922 ID |
5037 | osdc->completion_wq = create_singlethread_workqueue("ceph-completion"); |
5038 | if (!osdc->completion_wq) | |
5039 | goto out_notify_wq; | |
5040 | ||
fbca9635 ID |
5041 | schedule_delayed_work(&osdc->timeout_work, |
5042 | osdc->client->options->osd_keepalive_timeout); | |
b37ee1b9 ID |
5043 | schedule_delayed_work(&osdc->osds_timeout_work, |
5044 | round_jiffies_relative(osdc->client->options->osd_idle_ttl)); | |
5045 | ||
f24e9980 | 5046 | return 0; |
5f44f142 | 5047 | |
88bc1922 ID |
5048 | out_notify_wq: |
5049 | destroy_workqueue(osdc->notify_wq); | |
c172ec5c ID |
5050 | out_msgpool_reply: |
5051 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); | |
c16e7869 SW |
5052 | out_msgpool: |
5053 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
5054 | out_mempool: |
5055 | mempool_destroy(osdc->req_mempool); | |
e5253a7b ID |
5056 | out_map: |
5057 | ceph_osdmap_destroy(osdc->osdmap); | |
5f44f142 SW |
5058 | out: |
5059 | return err; | |
f24e9980 SW |
5060 | } |
5061 | ||
5062 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
5063 | { | |
88bc1922 | 5064 | destroy_workqueue(osdc->completion_wq); |
a40c4f10 | 5065 | destroy_workqueue(osdc->notify_wq); |
f24e9980 | 5066 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 5067 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
42a2c09f | 5068 | |
5aea3dcd | 5069 | down_write(&osdc->lock); |
42a2c09f ID |
5070 | while (!RB_EMPTY_ROOT(&osdc->osds)) { |
5071 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
5072 | struct ceph_osd, o_node); | |
5aea3dcd | 5073 | close_osd(osd); |
42a2c09f | 5074 | } |
5aea3dcd | 5075 | up_write(&osdc->lock); |
02113a0f | 5076 | WARN_ON(refcount_read(&osdc->homeless_osd.o_ref) != 1); |
5aea3dcd ID |
5077 | osd_cleanup(&osdc->homeless_osd); |
5078 | ||
5079 | WARN_ON(!list_empty(&osdc->osd_lru)); | |
922dab61 | 5080 | WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); |
4609245e ID |
5081 | WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); |
5082 | WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); | |
5aea3dcd ID |
5083 | WARN_ON(atomic_read(&osdc->num_requests)); |
5084 | WARN_ON(atomic_read(&osdc->num_homeless)); | |
42a2c09f | 5085 | |
e5253a7b | 5086 | ceph_osdmap_destroy(osdc->osdmap); |
f24e9980 SW |
5087 | mempool_destroy(osdc->req_mempool); |
5088 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 5089 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
5090 | } |
5091 | ||
5092 | /* | |
5093 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
5094 | * *plen. Return number of bytes read, or error. | |
5095 | */ | |
5096 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
5097 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
5098 | u64 off, u64 *plen, | |
5099 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 5100 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
5101 | { |
5102 | struct ceph_osd_request *req; | |
5103 | int rc = 0; | |
5104 | ||
5105 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
5106 | vino.snap, off, *plen); | |
715e4cd4 | 5107 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, |
f24e9980 | 5108 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, |
acead002 | 5109 | NULL, truncate_seq, truncate_size, |
153e5167 | 5110 | false); |
6816282d SW |
5111 | if (IS_ERR(req)) |
5112 | return PTR_ERR(req); | |
f24e9980 SW |
5113 | |
5114 | /* it may be a short read due to an object boundary */ | |
406e2c9f | 5115 | osd_req_op_extent_osd_data_pages(req, 0, |
a4ce40a9 | 5116 | pages, *plen, page_align, false, false); |
f24e9980 | 5117 | |
e0c59487 | 5118 | dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", |
43bfe5de | 5119 | off, *plen, *plen, page_align); |
f24e9980 SW |
5120 | |
5121 | rc = ceph_osdc_start_request(osdc, req, false); | |
5122 | if (!rc) | |
5123 | rc = ceph_osdc_wait_request(osdc, req); | |
5124 | ||
5125 | ceph_osdc_put_request(req); | |
5126 | dout("readpages result %d\n", rc); | |
5127 | return rc; | |
5128 | } | |
3d14c5d2 | 5129 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
5130 | |
5131 | /* | |
5132 | * do a synchronous write on N pages | |
5133 | */ | |
5134 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
5135 | struct ceph_file_layout *layout, | |
5136 | struct ceph_snap_context *snapc, | |
5137 | u64 off, u64 len, | |
5138 | u32 truncate_seq, u64 truncate_size, | |
fac02ddf | 5139 | struct timespec64 *mtime, |
24808826 | 5140 | struct page **pages, int num_pages) |
f24e9980 SW |
5141 | { |
5142 | struct ceph_osd_request *req; | |
5143 | int rc = 0; | |
b7495fc2 | 5144 | int page_align = off & ~PAGE_MASK; |
f24e9980 | 5145 | |
715e4cd4 | 5146 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, |
54ea0046 | 5147 | CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE, |
acead002 | 5148 | snapc, truncate_seq, truncate_size, |
153e5167 | 5149 | true); |
6816282d SW |
5150 | if (IS_ERR(req)) |
5151 | return PTR_ERR(req); | |
f24e9980 SW |
5152 | |
5153 | /* it may be a short write due to an object boundary */ | |
406e2c9f | 5154 | osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, |
43bfe5de AE |
5155 | false, false); |
5156 | dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); | |
f24e9980 | 5157 | |
bb873b53 | 5158 | req->r_mtime = *mtime; |
87f979d3 | 5159 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
5160 | if (!rc) |
5161 | rc = ceph_osdc_wait_request(osdc, req); | |
5162 | ||
5163 | ceph_osdc_put_request(req); | |
5164 | if (rc == 0) | |
5165 | rc = len; | |
5166 | dout("writepages result %d\n", rc); | |
5167 | return rc; | |
5168 | } | |
3d14c5d2 | 5169 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 | 5170 | |
57a35dfb | 5171 | int __init ceph_osdc_setup(void) |
5522ae0b | 5172 | { |
3f1af42a ID |
5173 | size_t size = sizeof(struct ceph_osd_request) + |
5174 | CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); | |
5175 | ||
5522ae0b | 5176 | BUG_ON(ceph_osd_request_cache); |
3f1af42a ID |
5177 | ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, |
5178 | 0, 0, NULL); | |
5522ae0b AE |
5179 | |
5180 | return ceph_osd_request_cache ? 0 : -ENOMEM; | |
5181 | } | |
5522ae0b AE |
5182 | |
5183 | void ceph_osdc_cleanup(void) | |
5184 | { | |
5185 | BUG_ON(!ceph_osd_request_cache); | |
5186 | kmem_cache_destroy(ceph_osd_request_cache); | |
5187 | ceph_osd_request_cache = NULL; | |
5188 | } | |
5522ae0b | 5189 | |
f24e9980 SW |
5190 | /* |
5191 | * handle incoming message | |
5192 | */ | |
5193 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
5194 | { | |
5195 | struct ceph_osd *osd = con->private; | |
5aea3dcd | 5196 | struct ceph_osd_client *osdc = osd->o_osdc; |
f24e9980 SW |
5197 | int type = le16_to_cpu(msg->hdr.type); |
5198 | ||
f24e9980 SW |
5199 | switch (type) { |
5200 | case CEPH_MSG_OSD_MAP: | |
5201 | ceph_osdc_handle_map(osdc, msg); | |
5202 | break; | |
5203 | case CEPH_MSG_OSD_OPREPLY: | |
5aea3dcd | 5204 | handle_reply(osd, msg); |
f24e9980 | 5205 | break; |
a02a946d ID |
5206 | case CEPH_MSG_OSD_BACKOFF: |
5207 | handle_backoff(osd, msg); | |
5208 | break; | |
a40c4f10 YS |
5209 | case CEPH_MSG_WATCH_NOTIFY: |
5210 | handle_watch_notify(osdc, msg); | |
5211 | break; | |
f24e9980 SW |
5212 | |
5213 | default: | |
5214 | pr_err("received unknown message type %d %s\n", type, | |
5215 | ceph_msg_type_name(type)); | |
5216 | } | |
5aea3dcd | 5217 | |
f24e9980 SW |
5218 | ceph_msg_put(msg); |
5219 | } | |
5220 | ||
5b3a4db3 | 5221 | /* |
d15f9d69 ID |
5222 | * Lookup and return message for incoming reply. Don't try to do |
5223 | * anything about a larger than preallocated data portion of the | |
5224 | * message at the moment - for now, just skip the message. | |
5b3a4db3 SW |
5225 | */ |
5226 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
5227 | struct ceph_msg_header *hdr, |
5228 | int *skip) | |
f24e9980 SW |
5229 | { |
5230 | struct ceph_osd *osd = con->private; | |
5231 | struct ceph_osd_client *osdc = osd->o_osdc; | |
5aea3dcd | 5232 | struct ceph_msg *m = NULL; |
0547a9b3 | 5233 | struct ceph_osd_request *req; |
3f0a4ac5 | 5234 | int front_len = le32_to_cpu(hdr->front_len); |
5b3a4db3 | 5235 | int data_len = le32_to_cpu(hdr->data_len); |
5aea3dcd | 5236 | u64 tid = le64_to_cpu(hdr->tid); |
f24e9980 | 5237 | |
5aea3dcd ID |
5238 | down_read(&osdc->lock); |
5239 | if (!osd_registered(osd)) { | |
5240 | dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); | |
5241 | *skip = 1; | |
5242 | goto out_unlock_osdc; | |
5243 | } | |
5244 | WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); | |
5245 | ||
5246 | mutex_lock(&osd->lock); | |
5247 | req = lookup_request(&osd->o_requests, tid); | |
0547a9b3 | 5248 | if (!req) { |
cd8140c6 ID |
5249 | dout("%s osd%d tid %llu unknown, skipping\n", __func__, |
5250 | osd->o_osd, tid); | |
d15f9d69 | 5251 | *skip = 1; |
5aea3dcd | 5252 | goto out_unlock_session; |
0547a9b3 | 5253 | } |
c16e7869 | 5254 | |
ace6d3a9 | 5255 | ceph_msg_revoke_incoming(req->r_reply); |
0547a9b3 | 5256 | |
f2be82b0 | 5257 | if (front_len > req->r_reply->front_alloc_len) { |
d15f9d69 ID |
5258 | pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", |
5259 | __func__, osd->o_osd, req->r_tid, front_len, | |
5260 | req->r_reply->front_alloc_len); | |
3f0a4ac5 ID |
5261 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, |
5262 | false); | |
a79832f2 | 5263 | if (!m) |
5aea3dcd | 5264 | goto out_unlock_session; |
c16e7869 SW |
5265 | ceph_msg_put(req->r_reply); |
5266 | req->r_reply = m; | |
5267 | } | |
0fff87ec | 5268 | |
d15f9d69 ID |
5269 | if (data_len > req->r_reply->data_length) { |
5270 | pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", | |
5271 | __func__, osd->o_osd, req->r_tid, data_len, | |
5272 | req->r_reply->data_length); | |
5273 | m = NULL; | |
5274 | *skip = 1; | |
5aea3dcd | 5275 | goto out_unlock_session; |
0547a9b3 | 5276 | } |
d15f9d69 ID |
5277 | |
5278 | m = ceph_msg_get(req->r_reply); | |
c16e7869 | 5279 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 | 5280 | |
5aea3dcd ID |
5281 | out_unlock_session: |
5282 | mutex_unlock(&osd->lock); | |
5283 | out_unlock_osdc: | |
5284 | up_read(&osdc->lock); | |
2450418c | 5285 | return m; |
5b3a4db3 SW |
5286 | } |
5287 | ||
19079203 ID |
5288 | /* |
5289 | * TODO: switch to a msg-owned pagelist | |
5290 | */ | |
5291 | static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) | |
5292 | { | |
5293 | struct ceph_msg *m; | |
5294 | int type = le16_to_cpu(hdr->type); | |
5295 | u32 front_len = le32_to_cpu(hdr->front_len); | |
5296 | u32 data_len = le32_to_cpu(hdr->data_len); | |
5297 | ||
5298 | m = ceph_msg_new(type, front_len, GFP_NOIO, false); | |
5299 | if (!m) | |
5300 | return NULL; | |
5301 | ||
5302 | if (data_len) { | |
5303 | struct page **pages; | |
5304 | struct ceph_osd_data osd_data; | |
5305 | ||
5306 | pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), | |
5307 | GFP_NOIO); | |
c22e853a | 5308 | if (IS_ERR(pages)) { |
19079203 ID |
5309 | ceph_msg_put(m); |
5310 | return NULL; | |
5311 | } | |
5312 | ||
5313 | ceph_osd_data_pages_init(&osd_data, pages, data_len, 0, false, | |
5314 | false); | |
5315 | ceph_osdc_msg_data_add(m, &osd_data); | |
5316 | } | |
5317 | ||
5318 | return m; | |
5319 | } | |
5320 | ||
5b3a4db3 SW |
5321 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, |
5322 | struct ceph_msg_header *hdr, | |
5323 | int *skip) | |
5324 | { | |
5325 | struct ceph_osd *osd = con->private; | |
5326 | int type = le16_to_cpu(hdr->type); | |
5b3a4db3 | 5327 | |
1c20f2d2 | 5328 | *skip = 0; |
5b3a4db3 SW |
5329 | switch (type) { |
5330 | case CEPH_MSG_OSD_MAP: | |
a02a946d | 5331 | case CEPH_MSG_OSD_BACKOFF: |
a40c4f10 | 5332 | case CEPH_MSG_WATCH_NOTIFY: |
19079203 | 5333 | return alloc_msg_with_page_vector(hdr); |
5b3a4db3 SW |
5334 | case CEPH_MSG_OSD_OPREPLY: |
5335 | return get_reply(con, hdr, skip); | |
5336 | default: | |
5aea3dcd ID |
5337 | pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, |
5338 | osd->o_osd, type); | |
5b3a4db3 SW |
5339 | *skip = 1; |
5340 | return NULL; | |
5341 | } | |
f24e9980 SW |
5342 | } |
5343 | ||
5344 | /* | |
5345 | * Wrappers to refcount containing ceph_osd struct | |
5346 | */ | |
5347 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
5348 | { | |
5349 | struct ceph_osd *osd = con->private; | |
5350 | if (get_osd(osd)) | |
5351 | return con; | |
5352 | return NULL; | |
5353 | } | |
5354 | ||
5355 | static void put_osd_con(struct ceph_connection *con) | |
5356 | { | |
5357 | struct ceph_osd *osd = con->private; | |
5358 | put_osd(osd); | |
5359 | } | |
5360 | ||
4e7a5dcd SW |
5361 | /* |
5362 | * authentication | |
5363 | */ | |
a3530df3 AE |
5364 | /* |
5365 | * Note: returned pointer is the address of a structure that's | |
5366 | * managed separately. Caller must *not* attempt to free it. | |
5367 | */ | |
5368 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 5369 | int *proto, int force_new) |
4e7a5dcd SW |
5370 | { |
5371 | struct ceph_osd *o = con->private; | |
5372 | struct ceph_osd_client *osdc = o->o_osdc; | |
5373 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 5374 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 5375 | |
74f1869f | 5376 | if (force_new && auth->authorizer) { |
6c1ea260 | 5377 | ceph_auth_destroy_authorizer(auth->authorizer); |
74f1869f AE |
5378 | auth->authorizer = NULL; |
5379 | } | |
27859f97 SW |
5380 | if (!auth->authorizer) { |
5381 | int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
5382 | auth); | |
4e7a5dcd | 5383 | if (ret) |
a3530df3 | 5384 | return ERR_PTR(ret); |
27859f97 SW |
5385 | } else { |
5386 | int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
0bed9b5c SW |
5387 | auth); |
5388 | if (ret) | |
5389 | return ERR_PTR(ret); | |
4e7a5dcd | 5390 | } |
4e7a5dcd | 5391 | *proto = ac->protocol; |
74f1869f | 5392 | |
a3530df3 | 5393 | return auth; |
4e7a5dcd SW |
5394 | } |
5395 | ||
6daca13d ID |
5396 | static int add_authorizer_challenge(struct ceph_connection *con, |
5397 | void *challenge_buf, int challenge_buf_len) | |
5398 | { | |
5399 | struct ceph_osd *o = con->private; | |
5400 | struct ceph_osd_client *osdc = o->o_osdc; | |
5401 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
5402 | ||
5403 | return ceph_auth_add_authorizer_challenge(ac, o->o_auth.authorizer, | |
5404 | challenge_buf, challenge_buf_len); | |
5405 | } | |
4e7a5dcd | 5406 | |
0dde5848 | 5407 | static int verify_authorizer_reply(struct ceph_connection *con) |
4e7a5dcd SW |
5408 | { |
5409 | struct ceph_osd *o = con->private; | |
5410 | struct ceph_osd_client *osdc = o->o_osdc; | |
5411 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
5412 | ||
0dde5848 | 5413 | return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer); |
4e7a5dcd SW |
5414 | } |
5415 | ||
9bd2e6f8 SW |
5416 | static int invalidate_authorizer(struct ceph_connection *con) |
5417 | { | |
5418 | struct ceph_osd *o = con->private; | |
5419 | struct ceph_osd_client *osdc = o->o_osdc; | |
5420 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
5421 | ||
27859f97 | 5422 | ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
9bd2e6f8 SW |
5423 | return ceph_monc_validate_auth(&osdc->client->monc); |
5424 | } | |
4e7a5dcd | 5425 | |
8cb441c0 ID |
5426 | static void osd_reencode_message(struct ceph_msg *msg) |
5427 | { | |
914902af ID |
5428 | int type = le16_to_cpu(msg->hdr.type); |
5429 | ||
5430 | if (type == CEPH_MSG_OSD_OP) | |
5431 | encode_request_finish(msg); | |
8cb441c0 ID |
5432 | } |
5433 | ||
79dbd1ba | 5434 | static int osd_sign_message(struct ceph_msg *msg) |
33d07337 | 5435 | { |
79dbd1ba | 5436 | struct ceph_osd *o = msg->con->private; |
33d07337 | 5437 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 5438 | |
33d07337 YZ |
5439 | return ceph_auth_sign_message(auth, msg); |
5440 | } | |
5441 | ||
79dbd1ba | 5442 | static int osd_check_message_signature(struct ceph_msg *msg) |
33d07337 | 5443 | { |
79dbd1ba | 5444 | struct ceph_osd *o = msg->con->private; |
33d07337 | 5445 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 5446 | |
33d07337 YZ |
5447 | return ceph_auth_check_message_signature(auth, msg); |
5448 | } | |
5449 | ||
9e32789f | 5450 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
5451 | .get = get_osd_con, |
5452 | .put = put_osd_con, | |
5453 | .dispatch = dispatch, | |
4e7a5dcd | 5454 | .get_authorizer = get_authorizer, |
6daca13d | 5455 | .add_authorizer_challenge = add_authorizer_challenge, |
4e7a5dcd | 5456 | .verify_authorizer_reply = verify_authorizer_reply, |
9bd2e6f8 | 5457 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 5458 | .alloc_msg = alloc_msg, |
8cb441c0 | 5459 | .reencode_message = osd_reencode_message, |
79dbd1ba ID |
5460 | .sign_message = osd_sign_message, |
5461 | .check_message_signature = osd_check_message_signature, | |
5aea3dcd | 5462 | .fault = osd_fault, |
f24e9980 | 5463 | }; |