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Commit | Line | Data |
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a4ce40a9 | 1 | |
3d14c5d2 | 2 | #include <linux/ceph/ceph_debug.h> |
f24e9980 | 3 | |
3d14c5d2 | 4 | #include <linux/module.h> |
f24e9980 SW |
5 | #include <linux/err.h> |
6 | #include <linux/highmem.h> | |
7 | #include <linux/mm.h> | |
8 | #include <linux/pagemap.h> | |
9 | #include <linux/slab.h> | |
10 | #include <linux/uaccess.h> | |
68b4476b YS |
11 | #ifdef CONFIG_BLOCK |
12 | #include <linux/bio.h> | |
13 | #endif | |
f24e9980 | 14 | |
8cb441c0 | 15 | #include <linux/ceph/ceph_features.h> |
3d14c5d2 YS |
16 | #include <linux/ceph/libceph.h> |
17 | #include <linux/ceph/osd_client.h> | |
18 | #include <linux/ceph/messenger.h> | |
19 | #include <linux/ceph/decode.h> | |
20 | #include <linux/ceph/auth.h> | |
21 | #include <linux/ceph/pagelist.h> | |
f24e9980 | 22 | |
c16e7869 | 23 | #define OSD_OPREPLY_FRONT_LEN 512 |
0d59ab81 | 24 | |
5522ae0b AE |
25 | static struct kmem_cache *ceph_osd_request_cache; |
26 | ||
9e32789f | 27 | static const struct ceph_connection_operations osd_con_ops; |
f24e9980 | 28 | |
f24e9980 SW |
29 | /* |
30 | * Implement client access to distributed object storage cluster. | |
31 | * | |
32 | * All data objects are stored within a cluster/cloud of OSDs, or | |
33 | * "object storage devices." (Note that Ceph OSDs have _nothing_ to | |
34 | * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply | |
35 | * remote daemons serving up and coordinating consistent and safe | |
36 | * access to storage. | |
37 | * | |
38 | * Cluster membership and the mapping of data objects onto storage devices | |
39 | * are described by the osd map. | |
40 | * | |
41 | * We keep track of pending OSD requests (read, write), resubmit | |
42 | * requests to different OSDs when the cluster topology/data layout | |
43 | * change, or retry the affected requests when the communications | |
44 | * channel with an OSD is reset. | |
45 | */ | |
46 | ||
5aea3dcd ID |
47 | static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req); |
48 | static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req); | |
922dab61 ID |
49 | static void link_linger(struct ceph_osd *osd, |
50 | struct ceph_osd_linger_request *lreq); | |
51 | static void unlink_linger(struct ceph_osd *osd, | |
52 | struct ceph_osd_linger_request *lreq); | |
a02a946d | 53 | static void clear_backoffs(struct ceph_osd *osd); |
5aea3dcd ID |
54 | |
55 | #if 1 | |
56 | static inline bool rwsem_is_wrlocked(struct rw_semaphore *sem) | |
57 | { | |
58 | bool wrlocked = true; | |
59 | ||
60 | if (unlikely(down_read_trylock(sem))) { | |
61 | wrlocked = false; | |
62 | up_read(sem); | |
63 | } | |
64 | ||
65 | return wrlocked; | |
66 | } | |
67 | static inline void verify_osdc_locked(struct ceph_osd_client *osdc) | |
68 | { | |
69 | WARN_ON(!rwsem_is_locked(&osdc->lock)); | |
70 | } | |
71 | static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) | |
72 | { | |
73 | WARN_ON(!rwsem_is_wrlocked(&osdc->lock)); | |
74 | } | |
75 | static inline void verify_osd_locked(struct ceph_osd *osd) | |
76 | { | |
77 | struct ceph_osd_client *osdc = osd->o_osdc; | |
78 | ||
79 | WARN_ON(!(mutex_is_locked(&osd->lock) && | |
80 | rwsem_is_locked(&osdc->lock)) && | |
81 | !rwsem_is_wrlocked(&osdc->lock)); | |
82 | } | |
922dab61 ID |
83 | static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) |
84 | { | |
85 | WARN_ON(!mutex_is_locked(&lreq->lock)); | |
86 | } | |
5aea3dcd ID |
87 | #else |
88 | static inline void verify_osdc_locked(struct ceph_osd_client *osdc) { } | |
89 | static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) { } | |
90 | static inline void verify_osd_locked(struct ceph_osd *osd) { } | |
922dab61 | 91 | static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) { } |
5aea3dcd ID |
92 | #endif |
93 | ||
f24e9980 SW |
94 | /* |
95 | * calculate the mapping of a file extent onto an object, and fill out the | |
96 | * request accordingly. shorten extent as necessary if it crosses an | |
97 | * object boundary. | |
98 | * | |
99 | * fill osd op in request message. | |
100 | */ | |
dbe0fc41 | 101 | static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, |
a19dadfb | 102 | u64 *objnum, u64 *objoff, u64 *objlen) |
f24e9980 | 103 | { |
60e56f13 | 104 | u64 orig_len = *plen; |
d63b77f4 | 105 | int r; |
f24e9980 | 106 | |
60e56f13 | 107 | /* object extent? */ |
75d1c941 AE |
108 | r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, |
109 | objoff, objlen); | |
d63b77f4 SW |
110 | if (r < 0) |
111 | return r; | |
75d1c941 AE |
112 | if (*objlen < orig_len) { |
113 | *plen = *objlen; | |
60e56f13 AE |
114 | dout(" skipping last %llu, final file extent %llu~%llu\n", |
115 | orig_len - *plen, off, *plen); | |
116 | } | |
117 | ||
75d1c941 | 118 | dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); |
f24e9980 | 119 | |
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, |
43bfe5de AE |
150 | struct bio *bio, size_t bio_length) |
151 | { | |
152 | osd_data->type = CEPH_OSD_DATA_TYPE_BIO; | |
153 | osd_data->bio = bio; | |
154 | osd_data->bio_length = bio_length; | |
155 | } | |
43bfe5de AE |
156 | #endif /* CONFIG_BLOCK */ |
157 | ||
8a703a38 IC |
158 | #define osd_req_op_data(oreq, whch, typ, fld) \ |
159 | ({ \ | |
160 | struct ceph_osd_request *__oreq = (oreq); \ | |
161 | unsigned int __whch = (whch); \ | |
162 | BUG_ON(__whch >= __oreq->r_num_ops); \ | |
163 | &__oreq->r_ops[__whch].typ.fld; \ | |
164 | }) | |
863c7eb5 | 165 | |
49719778 AE |
166 | static struct ceph_osd_data * |
167 | osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) | |
168 | { | |
169 | BUG_ON(which >= osd_req->r_num_ops); | |
170 | ||
171 | return &osd_req->r_ops[which].raw_data_in; | |
172 | } | |
173 | ||
a4ce40a9 AE |
174 | struct ceph_osd_data * |
175 | osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, | |
406e2c9f | 176 | unsigned int which) |
a4ce40a9 | 177 | { |
863c7eb5 | 178 | return osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
179 | } |
180 | EXPORT_SYMBOL(osd_req_op_extent_osd_data); | |
181 | ||
49719778 AE |
182 | void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, |
183 | unsigned int which, struct page **pages, | |
184 | u64 length, u32 alignment, | |
185 | bool pages_from_pool, bool own_pages) | |
186 | { | |
187 | struct ceph_osd_data *osd_data; | |
188 | ||
189 | osd_data = osd_req_op_raw_data_in(osd_req, which); | |
190 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
191 | pages_from_pool, own_pages); | |
192 | } | |
193 | EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); | |
194 | ||
a4ce40a9 | 195 | void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, |
406e2c9f AE |
196 | unsigned int which, struct page **pages, |
197 | u64 length, u32 alignment, | |
a4ce40a9 AE |
198 | bool pages_from_pool, bool own_pages) |
199 | { | |
200 | struct ceph_osd_data *osd_data; | |
201 | ||
863c7eb5 | 202 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
203 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
204 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
205 | } |
206 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); | |
207 | ||
208 | void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, | |
406e2c9f | 209 | unsigned int which, struct ceph_pagelist *pagelist) |
a4ce40a9 AE |
210 | { |
211 | struct ceph_osd_data *osd_data; | |
212 | ||
863c7eb5 | 213 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 | 214 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
215 | } |
216 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); | |
217 | ||
218 | #ifdef CONFIG_BLOCK | |
219 | void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, | |
406e2c9f | 220 | unsigned int which, struct bio *bio, size_t bio_length) |
a4ce40a9 AE |
221 | { |
222 | struct ceph_osd_data *osd_data; | |
863c7eb5 AE |
223 | |
224 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); | |
a4ce40a9 | 225 | ceph_osd_data_bio_init(osd_data, bio, bio_length); |
a4ce40a9 AE |
226 | } |
227 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); | |
228 | #endif /* CONFIG_BLOCK */ | |
229 | ||
230 | static void osd_req_op_cls_request_info_pagelist( | |
231 | struct ceph_osd_request *osd_req, | |
232 | unsigned int which, struct ceph_pagelist *pagelist) | |
233 | { | |
234 | struct ceph_osd_data *osd_data; | |
235 | ||
863c7eb5 | 236 | osd_data = osd_req_op_data(osd_req, which, cls, request_info); |
a4ce40a9 | 237 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
238 | } |
239 | ||
04017e29 AE |
240 | void osd_req_op_cls_request_data_pagelist( |
241 | struct ceph_osd_request *osd_req, | |
242 | unsigned int which, struct ceph_pagelist *pagelist) | |
243 | { | |
244 | struct ceph_osd_data *osd_data; | |
245 | ||
863c7eb5 | 246 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); |
04017e29 | 247 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
bb873b53 ID |
248 | osd_req->r_ops[which].cls.indata_len += pagelist->length; |
249 | osd_req->r_ops[which].indata_len += pagelist->length; | |
04017e29 AE |
250 | } |
251 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); | |
252 | ||
6c57b554 AE |
253 | void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, |
254 | unsigned int which, struct page **pages, u64 length, | |
255 | u32 alignment, bool pages_from_pool, bool own_pages) | |
256 | { | |
257 | struct ceph_osd_data *osd_data; | |
258 | ||
259 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); | |
260 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
261 | pages_from_pool, own_pages); | |
bb873b53 ID |
262 | osd_req->r_ops[which].cls.indata_len += length; |
263 | osd_req->r_ops[which].indata_len += length; | |
6c57b554 AE |
264 | } |
265 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); | |
266 | ||
a4ce40a9 AE |
267 | void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, |
268 | unsigned int which, struct page **pages, u64 length, | |
269 | u32 alignment, bool pages_from_pool, bool own_pages) | |
270 | { | |
271 | struct ceph_osd_data *osd_data; | |
272 | ||
863c7eb5 | 273 | osd_data = osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
274 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
275 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
276 | } |
277 | EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); | |
278 | ||
23c08a9c AE |
279 | static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) |
280 | { | |
281 | switch (osd_data->type) { | |
282 | case CEPH_OSD_DATA_TYPE_NONE: | |
283 | return 0; | |
284 | case CEPH_OSD_DATA_TYPE_PAGES: | |
285 | return osd_data->length; | |
286 | case CEPH_OSD_DATA_TYPE_PAGELIST: | |
287 | return (u64)osd_data->pagelist->length; | |
288 | #ifdef CONFIG_BLOCK | |
289 | case CEPH_OSD_DATA_TYPE_BIO: | |
290 | return (u64)osd_data->bio_length; | |
291 | #endif /* CONFIG_BLOCK */ | |
292 | default: | |
293 | WARN(true, "unrecognized data type %d\n", (int)osd_data->type); | |
294 | return 0; | |
295 | } | |
296 | } | |
297 | ||
c54d47bf AE |
298 | static void ceph_osd_data_release(struct ceph_osd_data *osd_data) |
299 | { | |
5476492f | 300 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { |
c54d47bf AE |
301 | int num_pages; |
302 | ||
303 | num_pages = calc_pages_for((u64)osd_data->alignment, | |
304 | (u64)osd_data->length); | |
305 | ceph_release_page_vector(osd_data->pages, num_pages); | |
306 | } | |
5476492f AE |
307 | ceph_osd_data_init(osd_data); |
308 | } | |
309 | ||
310 | static void osd_req_op_data_release(struct ceph_osd_request *osd_req, | |
311 | unsigned int which) | |
312 | { | |
313 | struct ceph_osd_req_op *op; | |
314 | ||
315 | BUG_ON(which >= osd_req->r_num_ops); | |
316 | op = &osd_req->r_ops[which]; | |
317 | ||
318 | switch (op->op) { | |
319 | case CEPH_OSD_OP_READ: | |
320 | case CEPH_OSD_OP_WRITE: | |
e30b7577 | 321 | case CEPH_OSD_OP_WRITEFULL: |
5476492f AE |
322 | ceph_osd_data_release(&op->extent.osd_data); |
323 | break; | |
324 | case CEPH_OSD_OP_CALL: | |
325 | ceph_osd_data_release(&op->cls.request_info); | |
04017e29 | 326 | ceph_osd_data_release(&op->cls.request_data); |
5476492f AE |
327 | ceph_osd_data_release(&op->cls.response_data); |
328 | break; | |
d74b50be YZ |
329 | case CEPH_OSD_OP_SETXATTR: |
330 | case CEPH_OSD_OP_CMPXATTR: | |
331 | ceph_osd_data_release(&op->xattr.osd_data); | |
332 | break; | |
66ba609f YZ |
333 | case CEPH_OSD_OP_STAT: |
334 | ceph_osd_data_release(&op->raw_data_in); | |
335 | break; | |
922dab61 ID |
336 | case CEPH_OSD_OP_NOTIFY_ACK: |
337 | ceph_osd_data_release(&op->notify_ack.request_data); | |
338 | break; | |
19079203 ID |
339 | case CEPH_OSD_OP_NOTIFY: |
340 | ceph_osd_data_release(&op->notify.request_data); | |
341 | ceph_osd_data_release(&op->notify.response_data); | |
342 | break; | |
a4ed38d7 DF |
343 | case CEPH_OSD_OP_LIST_WATCHERS: |
344 | ceph_osd_data_release(&op->list_watchers.response_data); | |
345 | break; | |
5476492f AE |
346 | default: |
347 | break; | |
348 | } | |
c54d47bf AE |
349 | } |
350 | ||
63244fa1 ID |
351 | /* |
352 | * Assumes @t is zero-initialized. | |
353 | */ | |
354 | static void target_init(struct ceph_osd_request_target *t) | |
355 | { | |
356 | ceph_oid_init(&t->base_oid); | |
357 | ceph_oloc_init(&t->base_oloc); | |
358 | ceph_oid_init(&t->target_oid); | |
359 | ceph_oloc_init(&t->target_oloc); | |
360 | ||
361 | ceph_osds_init(&t->acting); | |
362 | ceph_osds_init(&t->up); | |
363 | t->size = -1; | |
364 | t->min_size = -1; | |
365 | ||
366 | t->osd = CEPH_HOMELESS_OSD; | |
367 | } | |
368 | ||
922dab61 ID |
369 | static void target_copy(struct ceph_osd_request_target *dest, |
370 | const struct ceph_osd_request_target *src) | |
371 | { | |
372 | ceph_oid_copy(&dest->base_oid, &src->base_oid); | |
373 | ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); | |
374 | ceph_oid_copy(&dest->target_oid, &src->target_oid); | |
375 | ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); | |
376 | ||
377 | dest->pgid = src->pgid; /* struct */ | |
dc98ff72 | 378 | dest->spgid = src->spgid; /* struct */ |
922dab61 ID |
379 | dest->pg_num = src->pg_num; |
380 | dest->pg_num_mask = src->pg_num_mask; | |
381 | ceph_osds_copy(&dest->acting, &src->acting); | |
382 | ceph_osds_copy(&dest->up, &src->up); | |
383 | dest->size = src->size; | |
384 | dest->min_size = src->min_size; | |
385 | dest->sort_bitwise = src->sort_bitwise; | |
386 | ||
387 | dest->flags = src->flags; | |
388 | dest->paused = src->paused; | |
389 | ||
04c7d789 | 390 | dest->epoch = src->epoch; |
dc93e0e2 ID |
391 | dest->last_force_resend = src->last_force_resend; |
392 | ||
922dab61 ID |
393 | dest->osd = src->osd; |
394 | } | |
395 | ||
63244fa1 ID |
396 | static void target_destroy(struct ceph_osd_request_target *t) |
397 | { | |
398 | ceph_oid_destroy(&t->base_oid); | |
30c156d9 | 399 | ceph_oloc_destroy(&t->base_oloc); |
63244fa1 | 400 | ceph_oid_destroy(&t->target_oid); |
30c156d9 | 401 | ceph_oloc_destroy(&t->target_oloc); |
63244fa1 ID |
402 | } |
403 | ||
f24e9980 SW |
404 | /* |
405 | * requests | |
406 | */ | |
3540bfdb ID |
407 | static void request_release_checks(struct ceph_osd_request *req) |
408 | { | |
409 | WARN_ON(!RB_EMPTY_NODE(&req->r_node)); | |
4609245e | 410 | WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node)); |
3540bfdb ID |
411 | WARN_ON(!list_empty(&req->r_unsafe_item)); |
412 | WARN_ON(req->r_osd); | |
413 | } | |
414 | ||
9e94af20 | 415 | static void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 416 | { |
9e94af20 ID |
417 | struct ceph_osd_request *req = container_of(kref, |
418 | struct ceph_osd_request, r_kref); | |
5476492f | 419 | unsigned int which; |
415e49a9 | 420 | |
9e94af20 ID |
421 | dout("%s %p (r_request %p r_reply %p)\n", __func__, req, |
422 | req->r_request, req->r_reply); | |
3540bfdb | 423 | request_release_checks(req); |
9e94af20 | 424 | |
415e49a9 SW |
425 | if (req->r_request) |
426 | ceph_msg_put(req->r_request); | |
5aea3dcd | 427 | if (req->r_reply) |
ab8cb34a | 428 | ceph_msg_put(req->r_reply); |
0fff87ec | 429 | |
5476492f AE |
430 | for (which = 0; which < req->r_num_ops; which++) |
431 | osd_req_op_data_release(req, which); | |
0fff87ec | 432 | |
a66dd383 | 433 | target_destroy(&req->r_t); |
415e49a9 | 434 | ceph_put_snap_context(req->r_snapc); |
d30291b9 | 435 | |
415e49a9 SW |
436 | if (req->r_mempool) |
437 | mempool_free(req, req->r_osdc->req_mempool); | |
3f1af42a | 438 | else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) |
5522ae0b | 439 | kmem_cache_free(ceph_osd_request_cache, req); |
3f1af42a ID |
440 | else |
441 | kfree(req); | |
f24e9980 | 442 | } |
9e94af20 ID |
443 | |
444 | void ceph_osdc_get_request(struct ceph_osd_request *req) | |
445 | { | |
446 | dout("%s %p (was %d)\n", __func__, req, | |
2c935bc5 | 447 | kref_read(&req->r_kref)); |
9e94af20 ID |
448 | kref_get(&req->r_kref); |
449 | } | |
450 | EXPORT_SYMBOL(ceph_osdc_get_request); | |
451 | ||
452 | void ceph_osdc_put_request(struct ceph_osd_request *req) | |
453 | { | |
3ed97d63 ID |
454 | if (req) { |
455 | dout("%s %p (was %d)\n", __func__, req, | |
2c935bc5 | 456 | kref_read(&req->r_kref)); |
3ed97d63 ID |
457 | kref_put(&req->r_kref, ceph_osdc_release_request); |
458 | } | |
9e94af20 ID |
459 | } |
460 | EXPORT_SYMBOL(ceph_osdc_put_request); | |
68b4476b | 461 | |
3540bfdb ID |
462 | static void request_init(struct ceph_osd_request *req) |
463 | { | |
464 | /* req only, each op is zeroed in _osd_req_op_init() */ | |
465 | memset(req, 0, sizeof(*req)); | |
466 | ||
467 | kref_init(&req->r_kref); | |
468 | init_completion(&req->r_completion); | |
3540bfdb | 469 | RB_CLEAR_NODE(&req->r_node); |
4609245e | 470 | RB_CLEAR_NODE(&req->r_mc_node); |
3540bfdb ID |
471 | INIT_LIST_HEAD(&req->r_unsafe_item); |
472 | ||
473 | target_init(&req->r_t); | |
474 | } | |
475 | ||
922dab61 ID |
476 | /* |
477 | * This is ugly, but it allows us to reuse linger registration and ping | |
478 | * requests, keeping the structure of the code around send_linger{_ping}() | |
479 | * reasonable. Setting up a min_nr=2 mempool for each linger request | |
480 | * and dealing with copying ops (this blasts req only, watch op remains | |
481 | * intact) isn't any better. | |
482 | */ | |
483 | static void request_reinit(struct ceph_osd_request *req) | |
484 | { | |
485 | struct ceph_osd_client *osdc = req->r_osdc; | |
486 | bool mempool = req->r_mempool; | |
487 | unsigned int num_ops = req->r_num_ops; | |
488 | u64 snapid = req->r_snapid; | |
489 | struct ceph_snap_context *snapc = req->r_snapc; | |
490 | bool linger = req->r_linger; | |
491 | struct ceph_msg *request_msg = req->r_request; | |
492 | struct ceph_msg *reply_msg = req->r_reply; | |
493 | ||
494 | dout("%s req %p\n", __func__, req); | |
2c935bc5 | 495 | WARN_ON(kref_read(&req->r_kref) != 1); |
922dab61 ID |
496 | request_release_checks(req); |
497 | ||
2c935bc5 PZ |
498 | WARN_ON(kref_read(&request_msg->kref) != 1); |
499 | WARN_ON(kref_read(&reply_msg->kref) != 1); | |
922dab61 ID |
500 | target_destroy(&req->r_t); |
501 | ||
502 | request_init(req); | |
503 | req->r_osdc = osdc; | |
504 | req->r_mempool = mempool; | |
505 | req->r_num_ops = num_ops; | |
506 | req->r_snapid = snapid; | |
507 | req->r_snapc = snapc; | |
508 | req->r_linger = linger; | |
509 | req->r_request = request_msg; | |
510 | req->r_reply = reply_msg; | |
511 | } | |
512 | ||
3499e8a5 | 513 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 514 | struct ceph_snap_context *snapc, |
1b83bef2 | 515 | unsigned int num_ops, |
3499e8a5 | 516 | bool use_mempool, |
54a54007 | 517 | gfp_t gfp_flags) |
f24e9980 SW |
518 | { |
519 | struct ceph_osd_request *req; | |
1b83bef2 | 520 | |
f24e9980 | 521 | if (use_mempool) { |
3f1af42a | 522 | BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); |
3499e8a5 | 523 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
3f1af42a ID |
524 | } else if (num_ops <= CEPH_OSD_SLAB_OPS) { |
525 | req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); | |
f24e9980 | 526 | } else { |
3f1af42a ID |
527 | BUG_ON(num_ops > CEPH_OSD_MAX_OPS); |
528 | req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), | |
529 | gfp_flags); | |
f24e9980 | 530 | } |
3f1af42a | 531 | if (unlikely(!req)) |
a79832f2 | 532 | return NULL; |
f24e9980 | 533 | |
3540bfdb | 534 | request_init(req); |
f24e9980 SW |
535 | req->r_osdc = osdc; |
536 | req->r_mempool = use_mempool; | |
79528734 | 537 | req->r_num_ops = num_ops; |
84127282 ID |
538 | req->r_snapid = CEPH_NOSNAP; |
539 | req->r_snapc = ceph_get_snap_context(snapc); | |
68b4476b | 540 | |
13d1ad16 ID |
541 | dout("%s req %p\n", __func__, req); |
542 | return req; | |
543 | } | |
544 | EXPORT_SYMBOL(ceph_osdc_alloc_request); | |
3f1af42a | 545 | |
2e59ffd1 | 546 | static int ceph_oloc_encoding_size(const struct ceph_object_locator *oloc) |
30c156d9 YZ |
547 | { |
548 | return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0); | |
549 | } | |
550 | ||
13d1ad16 ID |
551 | int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) |
552 | { | |
553 | struct ceph_osd_client *osdc = req->r_osdc; | |
554 | struct ceph_msg *msg; | |
555 | int msg_size; | |
c16e7869 | 556 | |
d30291b9 | 557 | WARN_ON(ceph_oid_empty(&req->r_base_oid)); |
30c156d9 | 558 | WARN_ON(ceph_oloc_empty(&req->r_base_oloc)); |
d30291b9 | 559 | |
13d1ad16 | 560 | /* create request message */ |
8cb441c0 ID |
561 | msg_size = CEPH_ENCODING_START_BLK_LEN + |
562 | CEPH_PGID_ENCODING_LEN + 1; /* spgid */ | |
563 | msg_size += 4 + 4 + 4; /* hash, osdmap_epoch, flags */ | |
564 | msg_size += CEPH_ENCODING_START_BLK_LEN + | |
565 | sizeof(struct ceph_osd_reqid); /* reqid */ | |
566 | msg_size += sizeof(struct ceph_blkin_trace_info); /* trace */ | |
567 | msg_size += 4 + sizeof(struct ceph_timespec); /* client_inc, mtime */ | |
30c156d9 YZ |
568 | msg_size += CEPH_ENCODING_START_BLK_LEN + |
569 | ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */ | |
13d1ad16 ID |
570 | msg_size += 4 + req->r_base_oid.name_len; /* oid */ |
571 | msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); | |
ae458f5a ID |
572 | msg_size += 8; /* snapid */ |
573 | msg_size += 8; /* snap_seq */ | |
13d1ad16 | 574 | msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); |
8cb441c0 | 575 | msg_size += 4 + 8; /* retry_attempt, features */ |
ae458f5a | 576 | |
13d1ad16 | 577 | if (req->r_mempool) |
8f3bc053 | 578 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 579 | else |
13d1ad16 ID |
580 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); |
581 | if (!msg) | |
582 | return -ENOMEM; | |
68b4476b | 583 | |
f24e9980 | 584 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 | 585 | req->r_request = msg; |
3499e8a5 | 586 | |
13d1ad16 ID |
587 | /* create reply message */ |
588 | msg_size = OSD_OPREPLY_FRONT_LEN; | |
711da55d ID |
589 | msg_size += req->r_base_oid.name_len; |
590 | msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); | |
13d1ad16 ID |
591 | |
592 | if (req->r_mempool) | |
593 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
594 | else | |
595 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); | |
596 | if (!msg) | |
597 | return -ENOMEM; | |
598 | ||
599 | req->r_reply = msg; | |
600 | ||
601 | return 0; | |
3499e8a5 | 602 | } |
13d1ad16 | 603 | EXPORT_SYMBOL(ceph_osdc_alloc_messages); |
3499e8a5 | 604 | |
a8dd0a37 | 605 | static bool osd_req_opcode_valid(u16 opcode) |
68b4476b | 606 | { |
a8dd0a37 | 607 | switch (opcode) { |
70b5bfa3 ID |
608 | #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; |
609 | __CEPH_FORALL_OSD_OPS(GENERATE_CASE) | |
610 | #undef GENERATE_CASE | |
a8dd0a37 AE |
611 | default: |
612 | return false; | |
613 | } | |
614 | } | |
615 | ||
33803f33 AE |
616 | /* |
617 | * This is an osd op init function for opcodes that have no data or | |
618 | * other information associated with them. It also serves as a | |
619 | * common init routine for all the other init functions, below. | |
620 | */ | |
c99d2d4a | 621 | static struct ceph_osd_req_op * |
49719778 | 622 | _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, |
144cba14 | 623 | u16 opcode, u32 flags) |
33803f33 | 624 | { |
c99d2d4a AE |
625 | struct ceph_osd_req_op *op; |
626 | ||
627 | BUG_ON(which >= osd_req->r_num_ops); | |
33803f33 AE |
628 | BUG_ON(!osd_req_opcode_valid(opcode)); |
629 | ||
c99d2d4a | 630 | op = &osd_req->r_ops[which]; |
33803f33 | 631 | memset(op, 0, sizeof (*op)); |
33803f33 | 632 | op->op = opcode; |
144cba14 | 633 | op->flags = flags; |
c99d2d4a AE |
634 | |
635 | return op; | |
33803f33 AE |
636 | } |
637 | ||
49719778 | 638 | void osd_req_op_init(struct ceph_osd_request *osd_req, |
144cba14 | 639 | unsigned int which, u16 opcode, u32 flags) |
49719778 | 640 | { |
144cba14 | 641 | (void)_osd_req_op_init(osd_req, which, opcode, flags); |
49719778 AE |
642 | } |
643 | EXPORT_SYMBOL(osd_req_op_init); | |
644 | ||
c99d2d4a AE |
645 | void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
646 | unsigned int which, u16 opcode, | |
33803f33 AE |
647 | u64 offset, u64 length, |
648 | u64 truncate_size, u32 truncate_seq) | |
649 | { | |
144cba14 YZ |
650 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
651 | opcode, 0); | |
33803f33 AE |
652 | size_t payload_len = 0; |
653 | ||
ad7a60de | 654 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
e30b7577 ID |
655 | opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && |
656 | opcode != CEPH_OSD_OP_TRUNCATE); | |
33803f33 | 657 | |
33803f33 AE |
658 | op->extent.offset = offset; |
659 | op->extent.length = length; | |
660 | op->extent.truncate_size = truncate_size; | |
661 | op->extent.truncate_seq = truncate_seq; | |
e30b7577 | 662 | if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) |
33803f33 AE |
663 | payload_len += length; |
664 | ||
de2aa102 | 665 | op->indata_len = payload_len; |
33803f33 AE |
666 | } |
667 | EXPORT_SYMBOL(osd_req_op_extent_init); | |
668 | ||
c99d2d4a AE |
669 | void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
670 | unsigned int which, u64 length) | |
e5975c7c | 671 | { |
c99d2d4a AE |
672 | struct ceph_osd_req_op *op; |
673 | u64 previous; | |
674 | ||
675 | BUG_ON(which >= osd_req->r_num_ops); | |
676 | op = &osd_req->r_ops[which]; | |
677 | previous = op->extent.length; | |
e5975c7c AE |
678 | |
679 | if (length == previous) | |
680 | return; /* Nothing to do */ | |
681 | BUG_ON(length > previous); | |
682 | ||
683 | op->extent.length = length; | |
d641df81 YZ |
684 | if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) |
685 | op->indata_len -= previous - length; | |
e5975c7c AE |
686 | } |
687 | EXPORT_SYMBOL(osd_req_op_extent_update); | |
688 | ||
2c63f49a YZ |
689 | void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, |
690 | unsigned int which, u64 offset_inc) | |
691 | { | |
692 | struct ceph_osd_req_op *op, *prev_op; | |
693 | ||
694 | BUG_ON(which + 1 >= osd_req->r_num_ops); | |
695 | ||
696 | prev_op = &osd_req->r_ops[which]; | |
697 | op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); | |
698 | /* dup previous one */ | |
699 | op->indata_len = prev_op->indata_len; | |
700 | op->outdata_len = prev_op->outdata_len; | |
701 | op->extent = prev_op->extent; | |
702 | /* adjust offset */ | |
703 | op->extent.offset += offset_inc; | |
704 | op->extent.length -= offset_inc; | |
705 | ||
706 | if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) | |
707 | op->indata_len -= offset_inc; | |
708 | } | |
709 | EXPORT_SYMBOL(osd_req_op_extent_dup_last); | |
710 | ||
c99d2d4a | 711 | void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, |
04017e29 | 712 | u16 opcode, const char *class, const char *method) |
33803f33 | 713 | { |
144cba14 YZ |
714 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
715 | opcode, 0); | |
5f562df5 | 716 | struct ceph_pagelist *pagelist; |
33803f33 AE |
717 | size_t payload_len = 0; |
718 | size_t size; | |
719 | ||
720 | BUG_ON(opcode != CEPH_OSD_OP_CALL); | |
721 | ||
5f562df5 AE |
722 | pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); |
723 | BUG_ON(!pagelist); | |
724 | ceph_pagelist_init(pagelist); | |
725 | ||
33803f33 AE |
726 | op->cls.class_name = class; |
727 | size = strlen(class); | |
728 | BUG_ON(size > (size_t) U8_MAX); | |
729 | op->cls.class_len = size; | |
5f562df5 | 730 | ceph_pagelist_append(pagelist, class, size); |
33803f33 AE |
731 | payload_len += size; |
732 | ||
733 | op->cls.method_name = method; | |
734 | size = strlen(method); | |
735 | BUG_ON(size > (size_t) U8_MAX); | |
736 | op->cls.method_len = size; | |
5f562df5 | 737 | ceph_pagelist_append(pagelist, method, size); |
33803f33 AE |
738 | payload_len += size; |
739 | ||
a4ce40a9 | 740 | osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); |
5f562df5 | 741 | |
de2aa102 | 742 | op->indata_len = payload_len; |
33803f33 AE |
743 | } |
744 | EXPORT_SYMBOL(osd_req_op_cls_init); | |
8c042b0d | 745 | |
d74b50be YZ |
746 | int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, |
747 | u16 opcode, const char *name, const void *value, | |
748 | size_t size, u8 cmp_op, u8 cmp_mode) | |
749 | { | |
144cba14 YZ |
750 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
751 | opcode, 0); | |
d74b50be YZ |
752 | struct ceph_pagelist *pagelist; |
753 | size_t payload_len; | |
754 | ||
755 | BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); | |
756 | ||
757 | pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); | |
758 | if (!pagelist) | |
759 | return -ENOMEM; | |
760 | ||
761 | ceph_pagelist_init(pagelist); | |
762 | ||
763 | payload_len = strlen(name); | |
764 | op->xattr.name_len = payload_len; | |
765 | ceph_pagelist_append(pagelist, name, payload_len); | |
766 | ||
767 | op->xattr.value_len = size; | |
768 | ceph_pagelist_append(pagelist, value, size); | |
769 | payload_len += size; | |
770 | ||
771 | op->xattr.cmp_op = cmp_op; | |
772 | op->xattr.cmp_mode = cmp_mode; | |
773 | ||
774 | ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); | |
de2aa102 | 775 | op->indata_len = payload_len; |
d74b50be YZ |
776 | return 0; |
777 | } | |
778 | EXPORT_SYMBOL(osd_req_op_xattr_init); | |
779 | ||
922dab61 ID |
780 | /* |
781 | * @watch_opcode: CEPH_OSD_WATCH_OP_* | |
782 | */ | |
783 | static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, | |
784 | u64 cookie, u8 watch_opcode) | |
33803f33 | 785 | { |
922dab61 | 786 | struct ceph_osd_req_op *op; |
33803f33 | 787 | |
922dab61 | 788 | op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); |
33803f33 | 789 | op->watch.cookie = cookie; |
922dab61 ID |
790 | op->watch.op = watch_opcode; |
791 | op->watch.gen = 0; | |
33803f33 | 792 | } |
33803f33 | 793 | |
c647b8a8 ID |
794 | void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, |
795 | unsigned int which, | |
796 | u64 expected_object_size, | |
797 | u64 expected_write_size) | |
798 | { | |
799 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, | |
144cba14 YZ |
800 | CEPH_OSD_OP_SETALLOCHINT, |
801 | 0); | |
c647b8a8 ID |
802 | |
803 | op->alloc_hint.expected_object_size = expected_object_size; | |
804 | op->alloc_hint.expected_write_size = expected_write_size; | |
805 | ||
806 | /* | |
807 | * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed | |
808 | * not worth a feature bit. Set FAILOK per-op flag to make | |
809 | * sure older osds don't trip over an unsupported opcode. | |
810 | */ | |
811 | op->flags |= CEPH_OSD_OP_FLAG_FAILOK; | |
812 | } | |
813 | EXPORT_SYMBOL(osd_req_op_alloc_hint_init); | |
814 | ||
90af3602 | 815 | static void ceph_osdc_msg_data_add(struct ceph_msg *msg, |
ec9123c5 AE |
816 | struct ceph_osd_data *osd_data) |
817 | { | |
818 | u64 length = ceph_osd_data_length(osd_data); | |
819 | ||
820 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { | |
821 | BUG_ON(length > (u64) SIZE_MAX); | |
822 | if (length) | |
90af3602 | 823 | ceph_msg_data_add_pages(msg, osd_data->pages, |
ec9123c5 AE |
824 | length, osd_data->alignment); |
825 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { | |
826 | BUG_ON(!length); | |
90af3602 | 827 | ceph_msg_data_add_pagelist(msg, osd_data->pagelist); |
ec9123c5 AE |
828 | #ifdef CONFIG_BLOCK |
829 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { | |
90af3602 | 830 | ceph_msg_data_add_bio(msg, osd_data->bio, length); |
ec9123c5 AE |
831 | #endif |
832 | } else { | |
833 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); | |
834 | } | |
835 | } | |
836 | ||
bb873b53 ID |
837 | static u32 osd_req_encode_op(struct ceph_osd_op *dst, |
838 | const struct ceph_osd_req_op *src) | |
a8dd0a37 | 839 | { |
a8dd0a37 AE |
840 | if (WARN_ON(!osd_req_opcode_valid(src->op))) { |
841 | pr_err("unrecognized osd opcode %d\n", src->op); | |
842 | ||
843 | return 0; | |
844 | } | |
845 | ||
846 | switch (src->op) { | |
847 | case CEPH_OSD_OP_STAT: | |
848 | break; | |
849 | case CEPH_OSD_OP_READ: | |
850 | case CEPH_OSD_OP_WRITE: | |
e30b7577 | 851 | case CEPH_OSD_OP_WRITEFULL: |
ad7a60de | 852 | case CEPH_OSD_OP_ZERO: |
ad7a60de | 853 | case CEPH_OSD_OP_TRUNCATE: |
a8dd0a37 AE |
854 | dst->extent.offset = cpu_to_le64(src->extent.offset); |
855 | dst->extent.length = cpu_to_le64(src->extent.length); | |
856 | dst->extent.truncate_size = | |
857 | cpu_to_le64(src->extent.truncate_size); | |
858 | dst->extent.truncate_seq = | |
859 | cpu_to_le32(src->extent.truncate_seq); | |
860 | break; | |
861 | case CEPH_OSD_OP_CALL: | |
a8dd0a37 AE |
862 | dst->cls.class_len = src->cls.class_len; |
863 | dst->cls.method_len = src->cls.method_len; | |
bb873b53 | 864 | dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); |
a8dd0a37 AE |
865 | break; |
866 | case CEPH_OSD_OP_STARTSYNC: | |
867 | break; | |
a8dd0a37 AE |
868 | case CEPH_OSD_OP_WATCH: |
869 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
922dab61 ID |
870 | dst->watch.ver = cpu_to_le64(0); |
871 | dst->watch.op = src->watch.op; | |
872 | dst->watch.gen = cpu_to_le32(src->watch.gen); | |
873 | break; | |
874 | case CEPH_OSD_OP_NOTIFY_ACK: | |
a8dd0a37 | 875 | break; |
19079203 ID |
876 | case CEPH_OSD_OP_NOTIFY: |
877 | dst->notify.cookie = cpu_to_le64(src->notify.cookie); | |
878 | break; | |
a4ed38d7 DF |
879 | case CEPH_OSD_OP_LIST_WATCHERS: |
880 | break; | |
c647b8a8 ID |
881 | case CEPH_OSD_OP_SETALLOCHINT: |
882 | dst->alloc_hint.expected_object_size = | |
883 | cpu_to_le64(src->alloc_hint.expected_object_size); | |
884 | dst->alloc_hint.expected_write_size = | |
885 | cpu_to_le64(src->alloc_hint.expected_write_size); | |
886 | break; | |
d74b50be YZ |
887 | case CEPH_OSD_OP_SETXATTR: |
888 | case CEPH_OSD_OP_CMPXATTR: | |
889 | dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); | |
890 | dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); | |
891 | dst->xattr.cmp_op = src->xattr.cmp_op; | |
892 | dst->xattr.cmp_mode = src->xattr.cmp_mode; | |
d74b50be | 893 | break; |
864e9197 YZ |
894 | case CEPH_OSD_OP_CREATE: |
895 | case CEPH_OSD_OP_DELETE: | |
896 | break; | |
a8dd0a37 | 897 | default: |
4c46459c | 898 | pr_err("unsupported osd opcode %s\n", |
8f63ca2d | 899 | ceph_osd_op_name(src->op)); |
4c46459c | 900 | WARN_ON(1); |
a8dd0a37 AE |
901 | |
902 | return 0; | |
68b4476b | 903 | } |
7b25bf5f | 904 | |
a8dd0a37 | 905 | dst->op = cpu_to_le16(src->op); |
7b25bf5f | 906 | dst->flags = cpu_to_le32(src->flags); |
de2aa102 | 907 | dst->payload_len = cpu_to_le32(src->indata_len); |
175face2 | 908 | |
bb873b53 | 909 | return src->indata_len; |
68b4476b YS |
910 | } |
911 | ||
3499e8a5 YS |
912 | /* |
913 | * build new request AND message, calculate layout, and adjust file | |
914 | * extent as needed. | |
915 | * | |
916 | * if the file was recently truncated, we include information about its | |
917 | * old and new size so that the object can be updated appropriately. (we | |
918 | * avoid synchronously deleting truncated objects because it's slow.) | |
919 | * | |
920 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
921 | * data quickly. | |
922 | */ | |
923 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
924 | struct ceph_file_layout *layout, | |
925 | struct ceph_vino vino, | |
715e4cd4 YZ |
926 | u64 off, u64 *plen, |
927 | unsigned int which, int num_ops, | |
3499e8a5 YS |
928 | int opcode, int flags, |
929 | struct ceph_snap_context *snapc, | |
3499e8a5 YS |
930 | u32 truncate_seq, |
931 | u64 truncate_size, | |
153e5167 | 932 | bool use_mempool) |
3499e8a5 | 933 | { |
68b4476b | 934 | struct ceph_osd_request *req; |
75d1c941 AE |
935 | u64 objnum = 0; |
936 | u64 objoff = 0; | |
937 | u64 objlen = 0; | |
6816282d | 938 | int r; |
68b4476b | 939 | |
ad7a60de | 940 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
864e9197 YZ |
941 | opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && |
942 | opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); | |
68b4476b | 943 | |
acead002 | 944 | req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, |
ae7ca4a3 | 945 | GFP_NOFS); |
13d1ad16 ID |
946 | if (!req) { |
947 | r = -ENOMEM; | |
948 | goto fail; | |
949 | } | |
79528734 | 950 | |
3499e8a5 | 951 | /* calculate max write size */ |
a19dadfb | 952 | r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); |
13d1ad16 ID |
953 | if (r) |
954 | goto fail; | |
a19dadfb | 955 | |
864e9197 | 956 | if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { |
144cba14 | 957 | osd_req_op_init(req, which, opcode, 0); |
864e9197 | 958 | } else { |
7627151e | 959 | u32 object_size = layout->object_size; |
864e9197 YZ |
960 | u32 object_base = off - objoff; |
961 | if (!(truncate_seq == 1 && truncate_size == -1ULL)) { | |
962 | if (truncate_size <= object_base) { | |
963 | truncate_size = 0; | |
964 | } else { | |
965 | truncate_size -= object_base; | |
966 | if (truncate_size > object_size) | |
967 | truncate_size = object_size; | |
968 | } | |
ccca4e37 | 969 | } |
715e4cd4 | 970 | osd_req_op_extent_init(req, which, opcode, objoff, objlen, |
864e9197 YZ |
971 | truncate_size, truncate_seq); |
972 | } | |
d18d1e28 | 973 | |
a1f4020a | 974 | req->r_abort_on_full = true; |
bb873b53 | 975 | req->r_flags = flags; |
7627151e | 976 | req->r_base_oloc.pool = layout->pool_id; |
30c156d9 | 977 | req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns); |
d30291b9 | 978 | ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); |
dbe0fc41 | 979 | |
bb873b53 ID |
980 | req->r_snapid = vino.snap; |
981 | if (flags & CEPH_OSD_FLAG_WRITE) | |
982 | req->r_data_offset = off; | |
983 | ||
13d1ad16 ID |
984 | r = ceph_osdc_alloc_messages(req, GFP_NOFS); |
985 | if (r) | |
986 | goto fail; | |
987 | ||
f24e9980 | 988 | return req; |
13d1ad16 ID |
989 | |
990 | fail: | |
991 | ceph_osdc_put_request(req); | |
992 | return ERR_PTR(r); | |
f24e9980 | 993 | } |
3d14c5d2 | 994 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
995 | |
996 | /* | |
997 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
998 | */ | |
fcd00b68 | 999 | DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) |
4609245e | 1000 | DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) |
f24e9980 | 1001 | |
0247a0cf ID |
1002 | static bool osd_homeless(struct ceph_osd *osd) |
1003 | { | |
1004 | return osd->o_osd == CEPH_HOMELESS_OSD; | |
1005 | } | |
1006 | ||
5aea3dcd | 1007 | static bool osd_registered(struct ceph_osd *osd) |
f24e9980 | 1008 | { |
5aea3dcd | 1009 | verify_osdc_locked(osd->o_osdc); |
f24e9980 | 1010 | |
5aea3dcd | 1011 | return !RB_EMPTY_NODE(&osd->o_node); |
f24e9980 SW |
1012 | } |
1013 | ||
0247a0cf ID |
1014 | /* |
1015 | * Assumes @osd is zero-initialized. | |
1016 | */ | |
1017 | static void osd_init(struct ceph_osd *osd) | |
1018 | { | |
02113a0f | 1019 | refcount_set(&osd->o_ref, 1); |
0247a0cf | 1020 | RB_CLEAR_NODE(&osd->o_node); |
5aea3dcd | 1021 | osd->o_requests = RB_ROOT; |
922dab61 | 1022 | osd->o_linger_requests = RB_ROOT; |
a02a946d ID |
1023 | osd->o_backoff_mappings = RB_ROOT; |
1024 | osd->o_backoffs_by_id = RB_ROOT; | |
0247a0cf ID |
1025 | INIT_LIST_HEAD(&osd->o_osd_lru); |
1026 | INIT_LIST_HEAD(&osd->o_keepalive_item); | |
1027 | osd->o_incarnation = 1; | |
5aea3dcd | 1028 | mutex_init(&osd->lock); |
0247a0cf ID |
1029 | } |
1030 | ||
1031 | static void osd_cleanup(struct ceph_osd *osd) | |
1032 | { | |
1033 | WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); | |
5aea3dcd | 1034 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); |
922dab61 | 1035 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); |
a02a946d ID |
1036 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoff_mappings)); |
1037 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoffs_by_id)); | |
0247a0cf ID |
1038 | WARN_ON(!list_empty(&osd->o_osd_lru)); |
1039 | WARN_ON(!list_empty(&osd->o_keepalive_item)); | |
1040 | ||
1041 | if (osd->o_auth.authorizer) { | |
1042 | WARN_ON(osd_homeless(osd)); | |
1043 | ceph_auth_destroy_authorizer(osd->o_auth.authorizer); | |
1044 | } | |
1045 | } | |
1046 | ||
f24e9980 SW |
1047 | /* |
1048 | * Track open sessions with osds. | |
1049 | */ | |
e10006f8 | 1050 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
1051 | { |
1052 | struct ceph_osd *osd; | |
1053 | ||
0247a0cf ID |
1054 | WARN_ON(onum == CEPH_HOMELESS_OSD); |
1055 | ||
7a28f59b | 1056 | osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); |
0247a0cf | 1057 | osd_init(osd); |
f24e9980 | 1058 | osd->o_osdc = osdc; |
e10006f8 | 1059 | osd->o_osd = onum; |
f24e9980 | 1060 | |
b7a9e5dd | 1061 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 1062 | |
f24e9980 SW |
1063 | return osd; |
1064 | } | |
1065 | ||
1066 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
1067 | { | |
02113a0f ER |
1068 | if (refcount_inc_not_zero(&osd->o_ref)) { |
1069 | dout("get_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref)-1, | |
1070 | refcount_read(&osd->o_ref)); | |
f24e9980 SW |
1071 | return osd; |
1072 | } else { | |
1073 | dout("get_osd %p FAIL\n", osd); | |
1074 | return NULL; | |
1075 | } | |
1076 | } | |
1077 | ||
1078 | static void put_osd(struct ceph_osd *osd) | |
1079 | { | |
02113a0f ER |
1080 | dout("put_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref), |
1081 | refcount_read(&osd->o_ref) - 1); | |
1082 | if (refcount_dec_and_test(&osd->o_ref)) { | |
0247a0cf | 1083 | osd_cleanup(osd); |
f24e9980 | 1084 | kfree(osd); |
79494d1b | 1085 | } |
f24e9980 SW |
1086 | } |
1087 | ||
fcd00b68 ID |
1088 | DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) |
1089 | ||
9dd2845c | 1090 | static void __move_osd_to_lru(struct ceph_osd *osd) |
f5a2041b | 1091 | { |
9dd2845c ID |
1092 | struct ceph_osd_client *osdc = osd->o_osdc; |
1093 | ||
1094 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
f5a2041b | 1095 | BUG_ON(!list_empty(&osd->o_osd_lru)); |
bbf37ec3 | 1096 | |
9dd2845c | 1097 | spin_lock(&osdc->osd_lru_lock); |
f5a2041b | 1098 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); |
9dd2845c ID |
1099 | spin_unlock(&osdc->osd_lru_lock); |
1100 | ||
a319bf56 | 1101 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; |
f5a2041b YS |
1102 | } |
1103 | ||
9dd2845c | 1104 | static void maybe_move_osd_to_lru(struct ceph_osd *osd) |
bbf37ec3 | 1105 | { |
5aea3dcd | 1106 | if (RB_EMPTY_ROOT(&osd->o_requests) && |
922dab61 | 1107 | RB_EMPTY_ROOT(&osd->o_linger_requests)) |
9dd2845c | 1108 | __move_osd_to_lru(osd); |
bbf37ec3 ID |
1109 | } |
1110 | ||
f5a2041b YS |
1111 | static void __remove_osd_from_lru(struct ceph_osd *osd) |
1112 | { | |
9dd2845c ID |
1113 | struct ceph_osd_client *osdc = osd->o_osdc; |
1114 | ||
1115 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
1116 | ||
1117 | spin_lock(&osdc->osd_lru_lock); | |
f5a2041b YS |
1118 | if (!list_empty(&osd->o_osd_lru)) |
1119 | list_del_init(&osd->o_osd_lru); | |
9dd2845c | 1120 | spin_unlock(&osdc->osd_lru_lock); |
f5a2041b YS |
1121 | } |
1122 | ||
5aea3dcd ID |
1123 | /* |
1124 | * Close the connection and assign any leftover requests to the | |
1125 | * homeless session. | |
1126 | */ | |
1127 | static void close_osd(struct ceph_osd *osd) | |
1128 | { | |
1129 | struct ceph_osd_client *osdc = osd->o_osdc; | |
1130 | struct rb_node *n; | |
1131 | ||
1132 | verify_osdc_wrlocked(osdc); | |
1133 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
1134 | ||
1135 | ceph_con_close(&osd->o_con); | |
1136 | ||
1137 | for (n = rb_first(&osd->o_requests); n; ) { | |
1138 | struct ceph_osd_request *req = | |
1139 | rb_entry(n, struct ceph_osd_request, r_node); | |
1140 | ||
1141 | n = rb_next(n); /* unlink_request() */ | |
1142 | ||
1143 | dout(" reassigning req %p tid %llu\n", req, req->r_tid); | |
1144 | unlink_request(osd, req); | |
1145 | link_request(&osdc->homeless_osd, req); | |
1146 | } | |
922dab61 ID |
1147 | for (n = rb_first(&osd->o_linger_requests); n; ) { |
1148 | struct ceph_osd_linger_request *lreq = | |
1149 | rb_entry(n, struct ceph_osd_linger_request, node); | |
1150 | ||
1151 | n = rb_next(n); /* unlink_linger() */ | |
1152 | ||
1153 | dout(" reassigning lreq %p linger_id %llu\n", lreq, | |
1154 | lreq->linger_id); | |
1155 | unlink_linger(osd, lreq); | |
1156 | link_linger(&osdc->homeless_osd, lreq); | |
1157 | } | |
a02a946d | 1158 | clear_backoffs(osd); |
5aea3dcd ID |
1159 | |
1160 | __remove_osd_from_lru(osd); | |
1161 | erase_osd(&osdc->osds, osd); | |
1162 | put_osd(osd); | |
1163 | } | |
1164 | ||
f24e9980 SW |
1165 | /* |
1166 | * reset osd connect | |
1167 | */ | |
5aea3dcd | 1168 | static int reopen_osd(struct ceph_osd *osd) |
f24e9980 | 1169 | { |
c3acb181 | 1170 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 1171 | |
5aea3dcd ID |
1172 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); |
1173 | ||
1174 | if (RB_EMPTY_ROOT(&osd->o_requests) && | |
922dab61 | 1175 | RB_EMPTY_ROOT(&osd->o_linger_requests)) { |
5aea3dcd | 1176 | close_osd(osd); |
c3acb181 AE |
1177 | return -ENODEV; |
1178 | } | |
1179 | ||
5aea3dcd | 1180 | peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; |
c3acb181 AE |
1181 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && |
1182 | !ceph_con_opened(&osd->o_con)) { | |
5aea3dcd | 1183 | struct rb_node *n; |
c3acb181 | 1184 | |
0b4af2e8 ID |
1185 | dout("osd addr hasn't changed and connection never opened, " |
1186 | "letting msgr retry\n"); | |
87b315a5 | 1187 | /* touch each r_stamp for handle_timeout()'s benfit */ |
5aea3dcd ID |
1188 | for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { |
1189 | struct ceph_osd_request *req = | |
1190 | rb_entry(n, struct ceph_osd_request, r_node); | |
87b315a5 | 1191 | req->r_stamp = jiffies; |
5aea3dcd | 1192 | } |
c3acb181 AE |
1193 | |
1194 | return -EAGAIN; | |
f24e9980 | 1195 | } |
c3acb181 AE |
1196 | |
1197 | ceph_con_close(&osd->o_con); | |
1198 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
1199 | osd->o_incarnation++; | |
1200 | ||
1201 | return 0; | |
f24e9980 SW |
1202 | } |
1203 | ||
5aea3dcd ID |
1204 | static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, |
1205 | bool wrlocked) | |
f24e9980 | 1206 | { |
5aea3dcd | 1207 | struct ceph_osd *osd; |
35f9f8a0 | 1208 | |
5aea3dcd ID |
1209 | if (wrlocked) |
1210 | verify_osdc_wrlocked(osdc); | |
1211 | else | |
1212 | verify_osdc_locked(osdc); | |
f24e9980 | 1213 | |
5aea3dcd ID |
1214 | if (o != CEPH_HOMELESS_OSD) |
1215 | osd = lookup_osd(&osdc->osds, o); | |
1216 | else | |
1217 | osd = &osdc->homeless_osd; | |
1218 | if (!osd) { | |
1219 | if (!wrlocked) | |
1220 | return ERR_PTR(-EAGAIN); | |
0ba6478d | 1221 | |
5aea3dcd ID |
1222 | osd = create_osd(osdc, o); |
1223 | insert_osd(&osdc->osds, osd); | |
1224 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, | |
1225 | &osdc->osdmap->osd_addr[osd->o_osd]); | |
0ba6478d | 1226 | } |
f24e9980 | 1227 | |
5aea3dcd ID |
1228 | dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); |
1229 | return osd; | |
f24e9980 SW |
1230 | } |
1231 | ||
1232 | /* | |
5aea3dcd ID |
1233 | * Create request <-> OSD session relation. |
1234 | * | |
1235 | * @req has to be assigned a tid, @osd may be homeless. | |
f24e9980 | 1236 | */ |
5aea3dcd | 1237 | static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) |
f24e9980 | 1238 | { |
5aea3dcd ID |
1239 | verify_osd_locked(osd); |
1240 | WARN_ON(!req->r_tid || req->r_osd); | |
1241 | dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, | |
1242 | req, req->r_tid); | |
1243 | ||
1244 | if (!osd_homeless(osd)) | |
1245 | __remove_osd_from_lru(osd); | |
1246 | else | |
1247 | atomic_inc(&osd->o_osdc->num_homeless); | |
1248 | ||
1249 | get_osd(osd); | |
1250 | insert_request(&osd->o_requests, req); | |
1251 | req->r_osd = osd; | |
f24e9980 SW |
1252 | } |
1253 | ||
5aea3dcd ID |
1254 | static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) |
1255 | { | |
1256 | verify_osd_locked(osd); | |
1257 | WARN_ON(req->r_osd != osd); | |
1258 | dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, | |
1259 | req, req->r_tid); | |
1260 | ||
1261 | req->r_osd = NULL; | |
1262 | erase_request(&osd->o_requests, req); | |
1263 | put_osd(osd); | |
1264 | ||
1265 | if (!osd_homeless(osd)) | |
1266 | maybe_move_osd_to_lru(osd); | |
1267 | else | |
1268 | atomic_dec(&osd->o_osdc->num_homeless); | |
1269 | } | |
1270 | ||
63244fa1 ID |
1271 | static bool __pool_full(struct ceph_pg_pool_info *pi) |
1272 | { | |
1273 | return pi->flags & CEPH_POOL_FLAG_FULL; | |
1274 | } | |
1275 | ||
42c1b124 ID |
1276 | static bool have_pool_full(struct ceph_osd_client *osdc) |
1277 | { | |
1278 | struct rb_node *n; | |
1279 | ||
1280 | for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { | |
1281 | struct ceph_pg_pool_info *pi = | |
1282 | rb_entry(n, struct ceph_pg_pool_info, node); | |
1283 | ||
1284 | if (__pool_full(pi)) | |
1285 | return true; | |
1286 | } | |
1287 | ||
1288 | return false; | |
1289 | } | |
1290 | ||
5aea3dcd ID |
1291 | static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) |
1292 | { | |
1293 | struct ceph_pg_pool_info *pi; | |
1294 | ||
1295 | pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); | |
1296 | if (!pi) | |
1297 | return false; | |
1298 | ||
1299 | return __pool_full(pi); | |
1300 | } | |
1301 | ||
d29adb34 JD |
1302 | /* |
1303 | * Returns whether a request should be blocked from being sent | |
1304 | * based on the current osdmap and osd_client settings. | |
d29adb34 | 1305 | */ |
63244fa1 ID |
1306 | static bool target_should_be_paused(struct ceph_osd_client *osdc, |
1307 | const struct ceph_osd_request_target *t, | |
1308 | struct ceph_pg_pool_info *pi) | |
1309 | { | |
b7ec35b3 ID |
1310 | bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); |
1311 | bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || | |
1312 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || | |
63244fa1 ID |
1313 | __pool_full(pi); |
1314 | ||
6d637a54 | 1315 | WARN_ON(pi->id != t->target_oloc.pool); |
58eb7932 JL |
1316 | return ((t->flags & CEPH_OSD_FLAG_READ) && pauserd) || |
1317 | ((t->flags & CEPH_OSD_FLAG_WRITE) && pausewr) || | |
1318 | (osdc->osdmap->epoch < osdc->epoch_barrier); | |
63244fa1 ID |
1319 | } |
1320 | ||
63244fa1 ID |
1321 | enum calc_target_result { |
1322 | CALC_TARGET_NO_ACTION = 0, | |
1323 | CALC_TARGET_NEED_RESEND, | |
1324 | CALC_TARGET_POOL_DNE, | |
1325 | }; | |
1326 | ||
1327 | static enum calc_target_result calc_target(struct ceph_osd_client *osdc, | |
1328 | struct ceph_osd_request_target *t, | |
7de030d6 | 1329 | struct ceph_connection *con, |
63244fa1 ID |
1330 | bool any_change) |
1331 | { | |
1332 | struct ceph_pg_pool_info *pi; | |
1333 | struct ceph_pg pgid, last_pgid; | |
1334 | struct ceph_osds up, acting; | |
1335 | bool force_resend = false; | |
84ed45df ID |
1336 | bool unpaused = false; |
1337 | bool legacy_change; | |
7de030d6 | 1338 | bool split = false; |
b7ec35b3 | 1339 | bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); |
ae78dd81 ID |
1340 | bool recovery_deletes = ceph_osdmap_flag(osdc, |
1341 | CEPH_OSDMAP_RECOVERY_DELETES); | |
63244fa1 ID |
1342 | enum calc_target_result ct_res; |
1343 | int ret; | |
1344 | ||
04c7d789 | 1345 | t->epoch = osdc->osdmap->epoch; |
63244fa1 ID |
1346 | pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); |
1347 | if (!pi) { | |
1348 | t->osd = CEPH_HOMELESS_OSD; | |
1349 | ct_res = CALC_TARGET_POOL_DNE; | |
1350 | goto out; | |
1351 | } | |
1352 | ||
1353 | if (osdc->osdmap->epoch == pi->last_force_request_resend) { | |
dc93e0e2 ID |
1354 | if (t->last_force_resend < pi->last_force_request_resend) { |
1355 | t->last_force_resend = pi->last_force_request_resend; | |
63244fa1 | 1356 | force_resend = true; |
dc93e0e2 | 1357 | } else if (t->last_force_resend == 0) { |
63244fa1 ID |
1358 | force_resend = true; |
1359 | } | |
1360 | } | |
63244fa1 | 1361 | |
db098ec4 ID |
1362 | /* apply tiering */ |
1363 | ceph_oid_copy(&t->target_oid, &t->base_oid); | |
1364 | ceph_oloc_copy(&t->target_oloc, &t->base_oloc); | |
1365 | if ((t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { | |
63244fa1 ID |
1366 | if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) |
1367 | t->target_oloc.pool = pi->read_tier; | |
1368 | if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) | |
1369 | t->target_oloc.pool = pi->write_tier; | |
6d637a54 ID |
1370 | |
1371 | pi = ceph_pg_pool_by_id(osdc->osdmap, t->target_oloc.pool); | |
1372 | if (!pi) { | |
1373 | t->osd = CEPH_HOMELESS_OSD; | |
1374 | ct_res = CALC_TARGET_POOL_DNE; | |
1375 | goto out; | |
1376 | } | |
63244fa1 ID |
1377 | } |
1378 | ||
df28152d ID |
1379 | ret = __ceph_object_locator_to_pg(pi, &t->target_oid, &t->target_oloc, |
1380 | &pgid); | |
63244fa1 ID |
1381 | if (ret) { |
1382 | WARN_ON(ret != -ENOENT); | |
1383 | t->osd = CEPH_HOMELESS_OSD; | |
1384 | ct_res = CALC_TARGET_POOL_DNE; | |
1385 | goto out; | |
1386 | } | |
1387 | last_pgid.pool = pgid.pool; | |
1388 | last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); | |
1389 | ||
df28152d | 1390 | ceph_pg_to_up_acting_osds(osdc->osdmap, pi, &pgid, &up, &acting); |
63244fa1 ID |
1391 | if (any_change && |
1392 | ceph_is_new_interval(&t->acting, | |
1393 | &acting, | |
1394 | &t->up, | |
1395 | &up, | |
1396 | t->size, | |
1397 | pi->size, | |
1398 | t->min_size, | |
1399 | pi->min_size, | |
1400 | t->pg_num, | |
1401 | pi->pg_num, | |
1402 | t->sort_bitwise, | |
1403 | sort_bitwise, | |
ae78dd81 ID |
1404 | t->recovery_deletes, |
1405 | recovery_deletes, | |
63244fa1 ID |
1406 | &last_pgid)) |
1407 | force_resend = true; | |
1408 | ||
1409 | if (t->paused && !target_should_be_paused(osdc, t, pi)) { | |
1410 | t->paused = false; | |
84ed45df | 1411 | unpaused = true; |
63244fa1 | 1412 | } |
84ed45df ID |
1413 | legacy_change = ceph_pg_compare(&t->pgid, &pgid) || |
1414 | ceph_osds_changed(&t->acting, &acting, any_change); | |
7de030d6 ID |
1415 | if (t->pg_num) |
1416 | split = ceph_pg_is_split(&last_pgid, t->pg_num, pi->pg_num); | |
63244fa1 | 1417 | |
7de030d6 | 1418 | if (legacy_change || force_resend || split) { |
63244fa1 | 1419 | t->pgid = pgid; /* struct */ |
df28152d | 1420 | ceph_pg_to_primary_shard(osdc->osdmap, pi, &pgid, &t->spgid); |
63244fa1 ID |
1421 | ceph_osds_copy(&t->acting, &acting); |
1422 | ceph_osds_copy(&t->up, &up); | |
1423 | t->size = pi->size; | |
1424 | t->min_size = pi->min_size; | |
1425 | t->pg_num = pi->pg_num; | |
1426 | t->pg_num_mask = pi->pg_num_mask; | |
1427 | t->sort_bitwise = sort_bitwise; | |
ae78dd81 | 1428 | t->recovery_deletes = recovery_deletes; |
63244fa1 ID |
1429 | |
1430 | t->osd = acting.primary; | |
63244fa1 ID |
1431 | } |
1432 | ||
7de030d6 ID |
1433 | if (unpaused || legacy_change || force_resend || |
1434 | (split && con && CEPH_HAVE_FEATURE(con->peer_features, | |
1435 | RESEND_ON_SPLIT))) | |
84ed45df ID |
1436 | ct_res = CALC_TARGET_NEED_RESEND; |
1437 | else | |
1438 | ct_res = CALC_TARGET_NO_ACTION; | |
1439 | ||
63244fa1 ID |
1440 | out: |
1441 | dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); | |
1442 | return ct_res; | |
1443 | } | |
1444 | ||
a02a946d ID |
1445 | static struct ceph_spg_mapping *alloc_spg_mapping(void) |
1446 | { | |
1447 | struct ceph_spg_mapping *spg; | |
1448 | ||
1449 | spg = kmalloc(sizeof(*spg), GFP_NOIO); | |
1450 | if (!spg) | |
1451 | return NULL; | |
1452 | ||
1453 | RB_CLEAR_NODE(&spg->node); | |
1454 | spg->backoffs = RB_ROOT; | |
1455 | return spg; | |
1456 | } | |
1457 | ||
1458 | static void free_spg_mapping(struct ceph_spg_mapping *spg) | |
1459 | { | |
1460 | WARN_ON(!RB_EMPTY_NODE(&spg->node)); | |
1461 | WARN_ON(!RB_EMPTY_ROOT(&spg->backoffs)); | |
1462 | ||
1463 | kfree(spg); | |
1464 | } | |
1465 | ||
1466 | /* | |
1467 | * rbtree of ceph_spg_mapping for handling map<spg_t, ...>, similar to | |
1468 | * ceph_pg_mapping. Used to track OSD backoffs -- a backoff [range] is | |
1469 | * defined only within a specific spgid; it does not pass anything to | |
1470 | * children on split, or to another primary. | |
1471 | */ | |
1472 | DEFINE_RB_FUNCS2(spg_mapping, struct ceph_spg_mapping, spgid, ceph_spg_compare, | |
1473 | RB_BYPTR, const struct ceph_spg *, node) | |
1474 | ||
1475 | static u64 hoid_get_bitwise_key(const struct ceph_hobject_id *hoid) | |
1476 | { | |
1477 | return hoid->is_max ? 0x100000000ull : hoid->hash_reverse_bits; | |
1478 | } | |
1479 | ||
1480 | static void hoid_get_effective_key(const struct ceph_hobject_id *hoid, | |
1481 | void **pkey, size_t *pkey_len) | |
1482 | { | |
1483 | if (hoid->key_len) { | |
1484 | *pkey = hoid->key; | |
1485 | *pkey_len = hoid->key_len; | |
1486 | } else { | |
1487 | *pkey = hoid->oid; | |
1488 | *pkey_len = hoid->oid_len; | |
1489 | } | |
1490 | } | |
1491 | ||
1492 | static int compare_names(const void *name1, size_t name1_len, | |
1493 | const void *name2, size_t name2_len) | |
1494 | { | |
1495 | int ret; | |
1496 | ||
1497 | ret = memcmp(name1, name2, min(name1_len, name2_len)); | |
1498 | if (!ret) { | |
1499 | if (name1_len < name2_len) | |
1500 | ret = -1; | |
1501 | else if (name1_len > name2_len) | |
1502 | ret = 1; | |
1503 | } | |
1504 | return ret; | |
1505 | } | |
1506 | ||
1507 | static int hoid_compare(const struct ceph_hobject_id *lhs, | |
1508 | const struct ceph_hobject_id *rhs) | |
1509 | { | |
1510 | void *effective_key1, *effective_key2; | |
1511 | size_t effective_key1_len, effective_key2_len; | |
1512 | int ret; | |
1513 | ||
1514 | if (lhs->is_max < rhs->is_max) | |
1515 | return -1; | |
1516 | if (lhs->is_max > rhs->is_max) | |
1517 | return 1; | |
1518 | ||
1519 | if (lhs->pool < rhs->pool) | |
1520 | return -1; | |
1521 | if (lhs->pool > rhs->pool) | |
1522 | return 1; | |
1523 | ||
1524 | if (hoid_get_bitwise_key(lhs) < hoid_get_bitwise_key(rhs)) | |
1525 | return -1; | |
1526 | if (hoid_get_bitwise_key(lhs) > hoid_get_bitwise_key(rhs)) | |
1527 | return 1; | |
1528 | ||
1529 | ret = compare_names(lhs->nspace, lhs->nspace_len, | |
1530 | rhs->nspace, rhs->nspace_len); | |
1531 | if (ret) | |
1532 | return ret; | |
1533 | ||
1534 | hoid_get_effective_key(lhs, &effective_key1, &effective_key1_len); | |
1535 | hoid_get_effective_key(rhs, &effective_key2, &effective_key2_len); | |
1536 | ret = compare_names(effective_key1, effective_key1_len, | |
1537 | effective_key2, effective_key2_len); | |
1538 | if (ret) | |
1539 | return ret; | |
1540 | ||
1541 | ret = compare_names(lhs->oid, lhs->oid_len, rhs->oid, rhs->oid_len); | |
1542 | if (ret) | |
1543 | return ret; | |
1544 | ||
1545 | if (lhs->snapid < rhs->snapid) | |
1546 | return -1; | |
1547 | if (lhs->snapid > rhs->snapid) | |
1548 | return 1; | |
1549 | ||
1550 | return 0; | |
1551 | } | |
1552 | ||
1553 | /* | |
1554 | * For decoding ->begin and ->end of MOSDBackoff only -- no MIN/MAX | |
1555 | * compat stuff here. | |
1556 | * | |
1557 | * Assumes @hoid is zero-initialized. | |
1558 | */ | |
1559 | static int decode_hoid(void **p, void *end, struct ceph_hobject_id *hoid) | |
1560 | { | |
1561 | u8 struct_v; | |
1562 | u32 struct_len; | |
1563 | int ret; | |
1564 | ||
1565 | ret = ceph_start_decoding(p, end, 4, "hobject_t", &struct_v, | |
1566 | &struct_len); | |
1567 | if (ret) | |
1568 | return ret; | |
1569 | ||
1570 | if (struct_v < 4) { | |
1571 | pr_err("got struct_v %d < 4 of hobject_t\n", struct_v); | |
1572 | goto e_inval; | |
1573 | } | |
1574 | ||
1575 | hoid->key = ceph_extract_encoded_string(p, end, &hoid->key_len, | |
1576 | GFP_NOIO); | |
1577 | if (IS_ERR(hoid->key)) { | |
1578 | ret = PTR_ERR(hoid->key); | |
1579 | hoid->key = NULL; | |
1580 | return ret; | |
1581 | } | |
1582 | ||
1583 | hoid->oid = ceph_extract_encoded_string(p, end, &hoid->oid_len, | |
1584 | GFP_NOIO); | |
1585 | if (IS_ERR(hoid->oid)) { | |
1586 | ret = PTR_ERR(hoid->oid); | |
1587 | hoid->oid = NULL; | |
1588 | return ret; | |
1589 | } | |
1590 | ||
1591 | ceph_decode_64_safe(p, end, hoid->snapid, e_inval); | |
1592 | ceph_decode_32_safe(p, end, hoid->hash, e_inval); | |
1593 | ceph_decode_8_safe(p, end, hoid->is_max, e_inval); | |
1594 | ||
1595 | hoid->nspace = ceph_extract_encoded_string(p, end, &hoid->nspace_len, | |
1596 | GFP_NOIO); | |
1597 | if (IS_ERR(hoid->nspace)) { | |
1598 | ret = PTR_ERR(hoid->nspace); | |
1599 | hoid->nspace = NULL; | |
1600 | return ret; | |
1601 | } | |
1602 | ||
1603 | ceph_decode_64_safe(p, end, hoid->pool, e_inval); | |
1604 | ||
1605 | ceph_hoid_build_hash_cache(hoid); | |
1606 | return 0; | |
1607 | ||
1608 | e_inval: | |
1609 | return -EINVAL; | |
1610 | } | |
1611 | ||
1612 | static int hoid_encoding_size(const struct ceph_hobject_id *hoid) | |
1613 | { | |
1614 | return 8 + 4 + 1 + 8 + /* snapid, hash, is_max, pool */ | |
1615 | 4 + hoid->key_len + 4 + hoid->oid_len + 4 + hoid->nspace_len; | |
1616 | } | |
1617 | ||
1618 | static void encode_hoid(void **p, void *end, const struct ceph_hobject_id *hoid) | |
1619 | { | |
1620 | ceph_start_encoding(p, 4, 3, hoid_encoding_size(hoid)); | |
1621 | ceph_encode_string(p, end, hoid->key, hoid->key_len); | |
1622 | ceph_encode_string(p, end, hoid->oid, hoid->oid_len); | |
1623 | ceph_encode_64(p, hoid->snapid); | |
1624 | ceph_encode_32(p, hoid->hash); | |
1625 | ceph_encode_8(p, hoid->is_max); | |
1626 | ceph_encode_string(p, end, hoid->nspace, hoid->nspace_len); | |
1627 | ceph_encode_64(p, hoid->pool); | |
1628 | } | |
1629 | ||
1630 | static void free_hoid(struct ceph_hobject_id *hoid) | |
1631 | { | |
1632 | if (hoid) { | |
1633 | kfree(hoid->key); | |
1634 | kfree(hoid->oid); | |
1635 | kfree(hoid->nspace); | |
1636 | kfree(hoid); | |
1637 | } | |
1638 | } | |
1639 | ||
1640 | static struct ceph_osd_backoff *alloc_backoff(void) | |
1641 | { | |
1642 | struct ceph_osd_backoff *backoff; | |
1643 | ||
1644 | backoff = kzalloc(sizeof(*backoff), GFP_NOIO); | |
1645 | if (!backoff) | |
1646 | return NULL; | |
1647 | ||
1648 | RB_CLEAR_NODE(&backoff->spg_node); | |
1649 | RB_CLEAR_NODE(&backoff->id_node); | |
1650 | return backoff; | |
1651 | } | |
1652 | ||
1653 | static void free_backoff(struct ceph_osd_backoff *backoff) | |
1654 | { | |
1655 | WARN_ON(!RB_EMPTY_NODE(&backoff->spg_node)); | |
1656 | WARN_ON(!RB_EMPTY_NODE(&backoff->id_node)); | |
1657 | ||
1658 | free_hoid(backoff->begin); | |
1659 | free_hoid(backoff->end); | |
1660 | kfree(backoff); | |
1661 | } | |
1662 | ||
1663 | /* | |
1664 | * Within a specific spgid, backoffs are managed by ->begin hoid. | |
1665 | */ | |
1666 | DEFINE_RB_INSDEL_FUNCS2(backoff, struct ceph_osd_backoff, begin, hoid_compare, | |
1667 | RB_BYVAL, spg_node); | |
1668 | ||
1669 | static struct ceph_osd_backoff *lookup_containing_backoff(struct rb_root *root, | |
1670 | const struct ceph_hobject_id *hoid) | |
1671 | { | |
1672 | struct rb_node *n = root->rb_node; | |
1673 | ||
1674 | while (n) { | |
1675 | struct ceph_osd_backoff *cur = | |
1676 | rb_entry(n, struct ceph_osd_backoff, spg_node); | |
1677 | int cmp; | |
1678 | ||
1679 | cmp = hoid_compare(hoid, cur->begin); | |
1680 | if (cmp < 0) { | |
1681 | n = n->rb_left; | |
1682 | } else if (cmp > 0) { | |
1683 | if (hoid_compare(hoid, cur->end) < 0) | |
1684 | return cur; | |
1685 | ||
1686 | n = n->rb_right; | |
1687 | } else { | |
1688 | return cur; | |
1689 | } | |
1690 | } | |
1691 | ||
1692 | return NULL; | |
1693 | } | |
1694 | ||
1695 | /* | |
1696 | * Each backoff has a unique id within its OSD session. | |
1697 | */ | |
1698 | DEFINE_RB_FUNCS(backoff_by_id, struct ceph_osd_backoff, id, id_node) | |
1699 | ||
1700 | static void clear_backoffs(struct ceph_osd *osd) | |
1701 | { | |
1702 | while (!RB_EMPTY_ROOT(&osd->o_backoff_mappings)) { | |
1703 | struct ceph_spg_mapping *spg = | |
1704 | rb_entry(rb_first(&osd->o_backoff_mappings), | |
1705 | struct ceph_spg_mapping, node); | |
1706 | ||
1707 | while (!RB_EMPTY_ROOT(&spg->backoffs)) { | |
1708 | struct ceph_osd_backoff *backoff = | |
1709 | rb_entry(rb_first(&spg->backoffs), | |
1710 | struct ceph_osd_backoff, spg_node); | |
1711 | ||
1712 | erase_backoff(&spg->backoffs, backoff); | |
1713 | erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); | |
1714 | free_backoff(backoff); | |
1715 | } | |
1716 | erase_spg_mapping(&osd->o_backoff_mappings, spg); | |
1717 | free_spg_mapping(spg); | |
1718 | } | |
1719 | } | |
1720 | ||
1721 | /* | |
1722 | * Set up a temporary, non-owning view into @t. | |
1723 | */ | |
1724 | static void hoid_fill_from_target(struct ceph_hobject_id *hoid, | |
1725 | const struct ceph_osd_request_target *t) | |
1726 | { | |
1727 | hoid->key = NULL; | |
1728 | hoid->key_len = 0; | |
1729 | hoid->oid = t->target_oid.name; | |
1730 | hoid->oid_len = t->target_oid.name_len; | |
1731 | hoid->snapid = CEPH_NOSNAP; | |
1732 | hoid->hash = t->pgid.seed; | |
1733 | hoid->is_max = false; | |
1734 | if (t->target_oloc.pool_ns) { | |
1735 | hoid->nspace = t->target_oloc.pool_ns->str; | |
1736 | hoid->nspace_len = t->target_oloc.pool_ns->len; | |
1737 | } else { | |
1738 | hoid->nspace = NULL; | |
1739 | hoid->nspace_len = 0; | |
1740 | } | |
1741 | hoid->pool = t->target_oloc.pool; | |
1742 | ceph_hoid_build_hash_cache(hoid); | |
1743 | } | |
1744 | ||
1745 | static bool should_plug_request(struct ceph_osd_request *req) | |
1746 | { | |
1747 | struct ceph_osd *osd = req->r_osd; | |
1748 | struct ceph_spg_mapping *spg; | |
1749 | struct ceph_osd_backoff *backoff; | |
1750 | struct ceph_hobject_id hoid; | |
1751 | ||
1752 | spg = lookup_spg_mapping(&osd->o_backoff_mappings, &req->r_t.spgid); | |
1753 | if (!spg) | |
1754 | return false; | |
1755 | ||
1756 | hoid_fill_from_target(&hoid, &req->r_t); | |
1757 | backoff = lookup_containing_backoff(&spg->backoffs, &hoid); | |
1758 | if (!backoff) | |
1759 | return false; | |
1760 | ||
1761 | dout("%s req %p tid %llu backoff osd%d spgid %llu.%xs%d id %llu\n", | |
1762 | __func__, req, req->r_tid, osd->o_osd, backoff->spgid.pgid.pool, | |
1763 | backoff->spgid.pgid.seed, backoff->spgid.shard, backoff->id); | |
1764 | return true; | |
1765 | } | |
1766 | ||
bb873b53 ID |
1767 | static void setup_request_data(struct ceph_osd_request *req, |
1768 | struct ceph_msg *msg) | |
f24e9980 | 1769 | { |
bb873b53 ID |
1770 | u32 data_len = 0; |
1771 | int i; | |
1772 | ||
1773 | if (!list_empty(&msg->data)) | |
1774 | return; | |
f24e9980 | 1775 | |
bb873b53 ID |
1776 | WARN_ON(msg->data_length); |
1777 | for (i = 0; i < req->r_num_ops; i++) { | |
1778 | struct ceph_osd_req_op *op = &req->r_ops[i]; | |
1779 | ||
1780 | switch (op->op) { | |
1781 | /* request */ | |
1782 | case CEPH_OSD_OP_WRITE: | |
1783 | case CEPH_OSD_OP_WRITEFULL: | |
1784 | WARN_ON(op->indata_len != op->extent.length); | |
1785 | ceph_osdc_msg_data_add(msg, &op->extent.osd_data); | |
1786 | break; | |
1787 | case CEPH_OSD_OP_SETXATTR: | |
1788 | case CEPH_OSD_OP_CMPXATTR: | |
1789 | WARN_ON(op->indata_len != op->xattr.name_len + | |
1790 | op->xattr.value_len); | |
1791 | ceph_osdc_msg_data_add(msg, &op->xattr.osd_data); | |
1792 | break; | |
922dab61 ID |
1793 | case CEPH_OSD_OP_NOTIFY_ACK: |
1794 | ceph_osdc_msg_data_add(msg, | |
1795 | &op->notify_ack.request_data); | |
1796 | break; | |
bb873b53 ID |
1797 | |
1798 | /* reply */ | |
1799 | case CEPH_OSD_OP_STAT: | |
1800 | ceph_osdc_msg_data_add(req->r_reply, | |
1801 | &op->raw_data_in); | |
1802 | break; | |
1803 | case CEPH_OSD_OP_READ: | |
1804 | ceph_osdc_msg_data_add(req->r_reply, | |
1805 | &op->extent.osd_data); | |
1806 | break; | |
a4ed38d7 DF |
1807 | case CEPH_OSD_OP_LIST_WATCHERS: |
1808 | ceph_osdc_msg_data_add(req->r_reply, | |
1809 | &op->list_watchers.response_data); | |
1810 | break; | |
bb873b53 ID |
1811 | |
1812 | /* both */ | |
1813 | case CEPH_OSD_OP_CALL: | |
1814 | WARN_ON(op->indata_len != op->cls.class_len + | |
1815 | op->cls.method_len + | |
1816 | op->cls.indata_len); | |
1817 | ceph_osdc_msg_data_add(msg, &op->cls.request_info); | |
1818 | /* optional, can be NONE */ | |
1819 | ceph_osdc_msg_data_add(msg, &op->cls.request_data); | |
1820 | /* optional, can be NONE */ | |
1821 | ceph_osdc_msg_data_add(req->r_reply, | |
1822 | &op->cls.response_data); | |
1823 | break; | |
19079203 ID |
1824 | case CEPH_OSD_OP_NOTIFY: |
1825 | ceph_osdc_msg_data_add(msg, | |
1826 | &op->notify.request_data); | |
1827 | ceph_osdc_msg_data_add(req->r_reply, | |
1828 | &op->notify.response_data); | |
1829 | break; | |
bb873b53 ID |
1830 | } |
1831 | ||
1832 | data_len += op->indata_len; | |
1833 | } | |
1b83bef2 | 1834 | |
bb873b53 ID |
1835 | WARN_ON(data_len != msg->data_length); |
1836 | } | |
1837 | ||
2e59ffd1 ID |
1838 | static void encode_pgid(void **p, const struct ceph_pg *pgid) |
1839 | { | |
1840 | ceph_encode_8(p, 1); | |
1841 | ceph_encode_64(p, pgid->pool); | |
1842 | ceph_encode_32(p, pgid->seed); | |
1843 | ceph_encode_32(p, -1); /* preferred */ | |
1844 | } | |
1845 | ||
8cb441c0 ID |
1846 | static void encode_spgid(void **p, const struct ceph_spg *spgid) |
1847 | { | |
1848 | ceph_start_encoding(p, 1, 1, CEPH_PGID_ENCODING_LEN + 1); | |
1849 | encode_pgid(p, &spgid->pgid); | |
1850 | ceph_encode_8(p, spgid->shard); | |
1851 | } | |
1852 | ||
2e59ffd1 ID |
1853 | static void encode_oloc(void **p, void *end, |
1854 | const struct ceph_object_locator *oloc) | |
1855 | { | |
1856 | ceph_start_encoding(p, 5, 4, ceph_oloc_encoding_size(oloc)); | |
1857 | ceph_encode_64(p, oloc->pool); | |
1858 | ceph_encode_32(p, -1); /* preferred */ | |
1859 | ceph_encode_32(p, 0); /* key len */ | |
1860 | if (oloc->pool_ns) | |
1861 | ceph_encode_string(p, end, oloc->pool_ns->str, | |
1862 | oloc->pool_ns->len); | |
1863 | else | |
1864 | ceph_encode_32(p, 0); | |
1865 | } | |
1866 | ||
8cb441c0 ID |
1867 | static void encode_request_partial(struct ceph_osd_request *req, |
1868 | struct ceph_msg *msg) | |
bb873b53 ID |
1869 | { |
1870 | void *p = msg->front.iov_base; | |
1871 | void *const end = p + msg->front_alloc_len; | |
1872 | u32 data_len = 0; | |
1873 | int i; | |
1874 | ||
1875 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) { | |
1876 | /* snapshots aren't writeable */ | |
1877 | WARN_ON(req->r_snapid != CEPH_NOSNAP); | |
1878 | } else { | |
1879 | WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || | |
1880 | req->r_data_offset || req->r_snapc); | |
1881 | } | |
1882 | ||
1883 | setup_request_data(req, msg); | |
1884 | ||
8cb441c0 ID |
1885 | encode_spgid(&p, &req->r_t.spgid); /* actual spg */ |
1886 | ceph_encode_32(&p, req->r_t.pgid.seed); /* raw hash */ | |
bb873b53 ID |
1887 | ceph_encode_32(&p, req->r_osdc->osdmap->epoch); |
1888 | ceph_encode_32(&p, req->r_flags); | |
8cb441c0 ID |
1889 | |
1890 | /* reqid */ | |
1891 | ceph_start_encoding(&p, 2, 2, sizeof(struct ceph_osd_reqid)); | |
1892 | memset(p, 0, sizeof(struct ceph_osd_reqid)); | |
1893 | p += sizeof(struct ceph_osd_reqid); | |
1894 | ||
1895 | /* trace */ | |
1896 | memset(p, 0, sizeof(struct ceph_blkin_trace_info)); | |
1897 | p += sizeof(struct ceph_blkin_trace_info); | |
1898 | ||
1899 | ceph_encode_32(&p, 0); /* client_inc, always 0 */ | |
bb873b53 ID |
1900 | ceph_encode_timespec(p, &req->r_mtime); |
1901 | p += sizeof(struct ceph_timespec); | |
aa26d662 | 1902 | |
2e59ffd1 | 1903 | encode_oloc(&p, end, &req->r_t.target_oloc); |
2e59ffd1 ID |
1904 | ceph_encode_string(&p, end, req->r_t.target_oid.name, |
1905 | req->r_t.target_oid.name_len); | |
f24e9980 | 1906 | |
bb873b53 ID |
1907 | /* ops, can imply data */ |
1908 | ceph_encode_16(&p, req->r_num_ops); | |
1909 | for (i = 0; i < req->r_num_ops; i++) { | |
1910 | data_len += osd_req_encode_op(p, &req->r_ops[i]); | |
1911 | p += sizeof(struct ceph_osd_op); | |
1912 | } | |
26be8808 | 1913 | |
bb873b53 ID |
1914 | ceph_encode_64(&p, req->r_snapid); /* snapid */ |
1915 | if (req->r_snapc) { | |
1916 | ceph_encode_64(&p, req->r_snapc->seq); | |
1917 | ceph_encode_32(&p, req->r_snapc->num_snaps); | |
1918 | for (i = 0; i < req->r_snapc->num_snaps; i++) | |
1919 | ceph_encode_64(&p, req->r_snapc->snaps[i]); | |
1920 | } else { | |
1921 | ceph_encode_64(&p, 0); /* snap_seq */ | |
1922 | ceph_encode_32(&p, 0); /* snaps len */ | |
1923 | } | |
1924 | ||
1925 | ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ | |
986e8989 | 1926 | BUG_ON(p > end - 8); /* space for features */ |
bb873b53 | 1927 | |
8cb441c0 ID |
1928 | msg->hdr.version = cpu_to_le16(8); /* MOSDOp v8 */ |
1929 | /* front_len is finalized in encode_request_finish() */ | |
986e8989 ID |
1930 | msg->front.iov_len = p - msg->front.iov_base; |
1931 | msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); | |
bb873b53 ID |
1932 | msg->hdr.data_len = cpu_to_le32(data_len); |
1933 | /* | |
1934 | * The header "data_off" is a hint to the receiver allowing it | |
1935 | * to align received data into its buffers such that there's no | |
1936 | * need to re-copy it before writing it to disk (direct I/O). | |
1937 | */ | |
1938 | msg->hdr.data_off = cpu_to_le16(req->r_data_offset); | |
26be8808 | 1939 | |
8cb441c0 ID |
1940 | dout("%s req %p msg %p oid %s oid_len %d\n", __func__, req, msg, |
1941 | req->r_t.target_oid.name, req->r_t.target_oid.name_len); | |
1942 | } | |
1943 | ||
1944 | static void encode_request_finish(struct ceph_msg *msg) | |
1945 | { | |
1946 | void *p = msg->front.iov_base; | |
986e8989 | 1947 | void *const partial_end = p + msg->front.iov_len; |
8cb441c0 ID |
1948 | void *const end = p + msg->front_alloc_len; |
1949 | ||
1950 | if (CEPH_HAVE_FEATURE(msg->con->peer_features, RESEND_ON_SPLIT)) { | |
1951 | /* luminous OSD -- encode features and be done */ | |
986e8989 | 1952 | p = partial_end; |
8cb441c0 ID |
1953 | ceph_encode_64(&p, msg->con->peer_features); |
1954 | } else { | |
1955 | struct { | |
1956 | char spgid[CEPH_ENCODING_START_BLK_LEN + | |
1957 | CEPH_PGID_ENCODING_LEN + 1]; | |
1958 | __le32 hash; | |
1959 | __le32 epoch; | |
1960 | __le32 flags; | |
1961 | char reqid[CEPH_ENCODING_START_BLK_LEN + | |
1962 | sizeof(struct ceph_osd_reqid)]; | |
1963 | char trace[sizeof(struct ceph_blkin_trace_info)]; | |
1964 | __le32 client_inc; | |
1965 | struct ceph_timespec mtime; | |
1966 | } __packed head; | |
1967 | struct ceph_pg pgid; | |
1968 | void *oloc, *oid, *tail; | |
1969 | int oloc_len, oid_len, tail_len; | |
1970 | int len; | |
1971 | ||
1972 | /* | |
1973 | * Pre-luminous OSD -- reencode v8 into v4 using @head | |
1974 | * as a temporary buffer. Encode the raw PG; the rest | |
1975 | * is just a matter of moving oloc, oid and tail blobs | |
1976 | * around. | |
1977 | */ | |
1978 | memcpy(&head, p, sizeof(head)); | |
1979 | p += sizeof(head); | |
1980 | ||
1981 | oloc = p; | |
1982 | p += CEPH_ENCODING_START_BLK_LEN; | |
1983 | pgid.pool = ceph_decode_64(&p); | |
1984 | p += 4 + 4; /* preferred, key len */ | |
1985 | len = ceph_decode_32(&p); | |
1986 | p += len; /* nspace */ | |
1987 | oloc_len = p - oloc; | |
1988 | ||
1989 | oid = p; | |
1990 | len = ceph_decode_32(&p); | |
1991 | p += len; | |
1992 | oid_len = p - oid; | |
1993 | ||
1994 | tail = p; | |
986e8989 | 1995 | tail_len = partial_end - p; |
8cb441c0 ID |
1996 | |
1997 | p = msg->front.iov_base; | |
1998 | ceph_encode_copy(&p, &head.client_inc, sizeof(head.client_inc)); | |
1999 | ceph_encode_copy(&p, &head.epoch, sizeof(head.epoch)); | |
2000 | ceph_encode_copy(&p, &head.flags, sizeof(head.flags)); | |
2001 | ceph_encode_copy(&p, &head.mtime, sizeof(head.mtime)); | |
2002 | ||
2003 | /* reassert_version */ | |
2004 | memset(p, 0, sizeof(struct ceph_eversion)); | |
2005 | p += sizeof(struct ceph_eversion); | |
2006 | ||
2007 | BUG_ON(p >= oloc); | |
2008 | memmove(p, oloc, oloc_len); | |
2009 | p += oloc_len; | |
2010 | ||
2011 | pgid.seed = le32_to_cpu(head.hash); | |
2012 | encode_pgid(&p, &pgid); /* raw pg */ | |
2013 | ||
2014 | BUG_ON(p >= oid); | |
2015 | memmove(p, oid, oid_len); | |
2016 | p += oid_len; | |
2017 | ||
2018 | /* tail -- ops, snapid, snapc, retry_attempt */ | |
2019 | BUG_ON(p >= tail); | |
2020 | memmove(p, tail, tail_len); | |
2021 | p += tail_len; | |
2022 | ||
2023 | msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ | |
2024 | } | |
2025 | ||
2026 | BUG_ON(p > end); | |
2027 | msg->front.iov_len = p - msg->front.iov_base; | |
2028 | msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); | |
2029 | ||
2030 | dout("%s msg %p tid %llu %u+%u+%u v%d\n", __func__, msg, | |
2031 | le64_to_cpu(msg->hdr.tid), le32_to_cpu(msg->hdr.front_len), | |
2032 | le32_to_cpu(msg->hdr.middle_len), le32_to_cpu(msg->hdr.data_len), | |
2033 | le16_to_cpu(msg->hdr.version)); | |
bb873b53 ID |
2034 | } |
2035 | ||
2036 | /* | |
2037 | * @req has to be assigned a tid and registered. | |
2038 | */ | |
2039 | static void send_request(struct ceph_osd_request *req) | |
2040 | { | |
2041 | struct ceph_osd *osd = req->r_osd; | |
2042 | ||
5aea3dcd | 2043 | verify_osd_locked(osd); |
bb873b53 ID |
2044 | WARN_ON(osd->o_osd != req->r_t.osd); |
2045 | ||
a02a946d ID |
2046 | /* backoff? */ |
2047 | if (should_plug_request(req)) | |
2048 | return; | |
2049 | ||
5aea3dcd ID |
2050 | /* |
2051 | * We may have a previously queued request message hanging | |
2052 | * around. Cancel it to avoid corrupting the msgr. | |
2053 | */ | |
2054 | if (req->r_sent) | |
2055 | ceph_msg_revoke(req->r_request); | |
2056 | ||
bb873b53 ID |
2057 | req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; |
2058 | if (req->r_attempts) | |
2059 | req->r_flags |= CEPH_OSD_FLAG_RETRY; | |
2060 | else | |
2061 | WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); | |
2062 | ||
8cb441c0 | 2063 | encode_request_partial(req, req->r_request); |
bb873b53 | 2064 | |
04c7d789 | 2065 | 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 | 2066 | __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, |
dc98ff72 | 2067 | req->r_t.spgid.pgid.pool, req->r_t.spgid.pgid.seed, |
04c7d789 ID |
2068 | req->r_t.spgid.shard, osd->o_osd, req->r_t.epoch, req->r_flags, |
2069 | req->r_attempts); | |
bb873b53 ID |
2070 | |
2071 | req->r_t.paused = false; | |
2072 | req->r_stamp = jiffies; | |
2073 | req->r_attempts++; | |
2074 | ||
2075 | req->r_sent = osd->o_incarnation; | |
2076 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); | |
2077 | ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); | |
f24e9980 SW |
2078 | } |
2079 | ||
42c1b124 ID |
2080 | static void maybe_request_map(struct ceph_osd_client *osdc) |
2081 | { | |
2082 | bool continuous = false; | |
2083 | ||
5aea3dcd | 2084 | verify_osdc_locked(osdc); |
42c1b124 ID |
2085 | WARN_ON(!osdc->osdmap->epoch); |
2086 | ||
b7ec35b3 ID |
2087 | if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || |
2088 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || | |
2089 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { | |
42c1b124 ID |
2090 | dout("%s osdc %p continuous\n", __func__, osdc); |
2091 | continuous = true; | |
2092 | } else { | |
2093 | dout("%s osdc %p onetime\n", __func__, osdc); | |
2094 | } | |
2095 | ||
2096 | if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, | |
2097 | osdc->osdmap->epoch + 1, continuous)) | |
2098 | ceph_monc_renew_subs(&osdc->client->monc); | |
2099 | } | |
2100 | ||
a1f4020a | 2101 | static void complete_request(struct ceph_osd_request *req, int err); |
4609245e ID |
2102 | static void send_map_check(struct ceph_osd_request *req); |
2103 | ||
5aea3dcd | 2104 | static void __submit_request(struct ceph_osd_request *req, bool wrlocked) |
0bbfdfe8 | 2105 | { |
5aea3dcd ID |
2106 | struct ceph_osd_client *osdc = req->r_osdc; |
2107 | struct ceph_osd *osd; | |
4609245e | 2108 | enum calc_target_result ct_res; |
5aea3dcd ID |
2109 | bool need_send = false; |
2110 | bool promoted = false; | |
a1f4020a | 2111 | bool need_abort = false; |
0bbfdfe8 | 2112 | |
b18b9550 | 2113 | WARN_ON(req->r_tid); |
5aea3dcd ID |
2114 | dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); |
2115 | ||
2116 | again: | |
7de030d6 | 2117 | ct_res = calc_target(osdc, &req->r_t, NULL, false); |
4609245e ID |
2118 | if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) |
2119 | goto promote; | |
2120 | ||
5aea3dcd ID |
2121 | osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); |
2122 | if (IS_ERR(osd)) { | |
2123 | WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); | |
2124 | goto promote; | |
0bbfdfe8 ID |
2125 | } |
2126 | ||
58eb7932 JL |
2127 | if (osdc->osdmap->epoch < osdc->epoch_barrier) { |
2128 | dout("req %p epoch %u barrier %u\n", req, osdc->osdmap->epoch, | |
2129 | osdc->epoch_barrier); | |
2130 | req->r_t.paused = true; | |
2131 | maybe_request_map(osdc); | |
2132 | } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && | |
2133 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { | |
5aea3dcd ID |
2134 | dout("req %p pausewr\n", req); |
2135 | req->r_t.paused = true; | |
2136 | maybe_request_map(osdc); | |
2137 | } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && | |
b7ec35b3 | 2138 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { |
5aea3dcd ID |
2139 | dout("req %p pauserd\n", req); |
2140 | req->r_t.paused = true; | |
2141 | maybe_request_map(osdc); | |
2142 | } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && | |
2143 | !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | | |
2144 | CEPH_OSD_FLAG_FULL_FORCE)) && | |
b7ec35b3 | 2145 | (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || |
5aea3dcd ID |
2146 | pool_full(osdc, req->r_t.base_oloc.pool))) { |
2147 | dout("req %p full/pool_full\n", req); | |
2148 | pr_warn_ratelimited("FULL or reached pool quota\n"); | |
2149 | req->r_t.paused = true; | |
2150 | maybe_request_map(osdc); | |
a1f4020a JL |
2151 | if (req->r_abort_on_full) |
2152 | need_abort = true; | |
5aea3dcd ID |
2153 | } else if (!osd_homeless(osd)) { |
2154 | need_send = true; | |
0bbfdfe8 | 2155 | } else { |
5aea3dcd | 2156 | maybe_request_map(osdc); |
0bbfdfe8 ID |
2157 | } |
2158 | ||
5aea3dcd ID |
2159 | mutex_lock(&osd->lock); |
2160 | /* | |
2161 | * Assign the tid atomically with send_request() to protect | |
2162 | * multiple writes to the same object from racing with each | |
2163 | * other, resulting in out of order ops on the OSDs. | |
2164 | */ | |
2165 | req->r_tid = atomic64_inc_return(&osdc->last_tid); | |
2166 | link_request(osd, req); | |
2167 | if (need_send) | |
2168 | send_request(req); | |
a1f4020a JL |
2169 | else if (need_abort) |
2170 | complete_request(req, -ENOSPC); | |
5aea3dcd ID |
2171 | mutex_unlock(&osd->lock); |
2172 | ||
4609245e ID |
2173 | if (ct_res == CALC_TARGET_POOL_DNE) |
2174 | send_map_check(req); | |
2175 | ||
5aea3dcd ID |
2176 | if (promoted) |
2177 | downgrade_write(&osdc->lock); | |
2178 | return; | |
2179 | ||
2180 | promote: | |
2181 | up_read(&osdc->lock); | |
2182 | down_write(&osdc->lock); | |
2183 | wrlocked = true; | |
2184 | promoted = true; | |
2185 | goto again; | |
2186 | } | |
2187 | ||
2188 | static void account_request(struct ceph_osd_request *req) | |
2189 | { | |
54ea0046 | 2190 | WARN_ON(req->r_flags & (CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK)); |
b18b9550 | 2191 | WARN_ON(!(req->r_flags & (CEPH_OSD_FLAG_READ | CEPH_OSD_FLAG_WRITE))); |
5aea3dcd | 2192 | |
b18b9550 | 2193 | req->r_flags |= CEPH_OSD_FLAG_ONDISK; |
5aea3dcd | 2194 | atomic_inc(&req->r_osdc->num_requests); |
7cc5e38f ID |
2195 | |
2196 | req->r_start_stamp = jiffies; | |
5aea3dcd ID |
2197 | } |
2198 | ||
2199 | static void submit_request(struct ceph_osd_request *req, bool wrlocked) | |
2200 | { | |
2201 | ceph_osdc_get_request(req); | |
2202 | account_request(req); | |
2203 | __submit_request(req, wrlocked); | |
2204 | } | |
2205 | ||
45ee2c1d | 2206 | static void finish_request(struct ceph_osd_request *req) |
5aea3dcd ID |
2207 | { |
2208 | struct ceph_osd_client *osdc = req->r_osdc; | |
5aea3dcd | 2209 | |
04c7d789 | 2210 | WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); |
5aea3dcd ID |
2211 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); |
2212 | ||
04c7d789 ID |
2213 | if (req->r_osd) |
2214 | unlink_request(req->r_osd, req); | |
5aea3dcd ID |
2215 | atomic_dec(&osdc->num_requests); |
2216 | ||
2217 | /* | |
2218 | * If an OSD has failed or returned and a request has been sent | |
2219 | * twice, it's possible to get a reply and end up here while the | |
2220 | * request message is queued for delivery. We will ignore the | |
2221 | * reply, so not a big deal, but better to try and catch it. | |
2222 | */ | |
2223 | ceph_msg_revoke(req->r_request); | |
2224 | ceph_msg_revoke_incoming(req->r_reply); | |
2225 | } | |
2226 | ||
fe5da05e ID |
2227 | static void __complete_request(struct ceph_osd_request *req) |
2228 | { | |
b18b9550 ID |
2229 | if (req->r_callback) { |
2230 | dout("%s req %p tid %llu cb %pf result %d\n", __func__, req, | |
2231 | req->r_tid, req->r_callback, req->r_result); | |
fe5da05e | 2232 | req->r_callback(req); |
b18b9550 | 2233 | } |
fe5da05e ID |
2234 | } |
2235 | ||
4609245e | 2236 | /* |
b18b9550 | 2237 | * This is open-coded in handle_reply(). |
4609245e ID |
2238 | */ |
2239 | static void complete_request(struct ceph_osd_request *req, int err) | |
2240 | { | |
2241 | dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); | |
2242 | ||
2243 | req->r_result = err; | |
45ee2c1d | 2244 | finish_request(req); |
4609245e | 2245 | __complete_request(req); |
b18b9550 | 2246 | complete_all(&req->r_completion); |
4609245e ID |
2247 | ceph_osdc_put_request(req); |
2248 | } | |
2249 | ||
2250 | static void cancel_map_check(struct ceph_osd_request *req) | |
2251 | { | |
2252 | struct ceph_osd_client *osdc = req->r_osdc; | |
2253 | struct ceph_osd_request *lookup_req; | |
2254 | ||
2255 | verify_osdc_wrlocked(osdc); | |
2256 | ||
2257 | lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); | |
2258 | if (!lookup_req) | |
2259 | return; | |
2260 | ||
2261 | WARN_ON(lookup_req != req); | |
2262 | erase_request_mc(&osdc->map_checks, req); | |
2263 | ceph_osdc_put_request(req); | |
2264 | } | |
2265 | ||
5aea3dcd ID |
2266 | static void cancel_request(struct ceph_osd_request *req) |
2267 | { | |
2268 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); | |
2269 | ||
4609245e | 2270 | cancel_map_check(req); |
45ee2c1d | 2271 | finish_request(req); |
b18b9550 | 2272 | complete_all(&req->r_completion); |
c297eb42 | 2273 | ceph_osdc_put_request(req); |
5aea3dcd ID |
2274 | } |
2275 | ||
7cc5e38f ID |
2276 | static void abort_request(struct ceph_osd_request *req, int err) |
2277 | { | |
2278 | dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); | |
2279 | ||
2280 | cancel_map_check(req); | |
2281 | complete_request(req, err); | |
2282 | } | |
2283 | ||
58eb7932 JL |
2284 | static void update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) |
2285 | { | |
2286 | if (likely(eb > osdc->epoch_barrier)) { | |
2287 | dout("updating epoch_barrier from %u to %u\n", | |
2288 | osdc->epoch_barrier, eb); | |
2289 | osdc->epoch_barrier = eb; | |
2290 | /* Request map if we're not to the barrier yet */ | |
2291 | if (eb > osdc->osdmap->epoch) | |
2292 | maybe_request_map(osdc); | |
2293 | } | |
2294 | } | |
2295 | ||
2296 | void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) | |
2297 | { | |
2298 | down_read(&osdc->lock); | |
2299 | if (unlikely(eb > osdc->epoch_barrier)) { | |
2300 | up_read(&osdc->lock); | |
2301 | down_write(&osdc->lock); | |
2302 | update_epoch_barrier(osdc, eb); | |
2303 | up_write(&osdc->lock); | |
2304 | } else { | |
2305 | up_read(&osdc->lock); | |
2306 | } | |
2307 | } | |
2308 | EXPORT_SYMBOL(ceph_osdc_update_epoch_barrier); | |
2309 | ||
fc36d0a4 JL |
2310 | /* |
2311 | * Drop all pending requests that are stalled waiting on a full condition to | |
58eb7932 JL |
2312 | * clear, and complete them with ENOSPC as the return code. Set the |
2313 | * osdc->epoch_barrier to the latest map epoch that we've seen if any were | |
2314 | * cancelled. | |
fc36d0a4 JL |
2315 | */ |
2316 | static void ceph_osdc_abort_on_full(struct ceph_osd_client *osdc) | |
2317 | { | |
2318 | struct rb_node *n; | |
58eb7932 | 2319 | bool victims = false; |
fc36d0a4 JL |
2320 | |
2321 | dout("enter abort_on_full\n"); | |
2322 | ||
2323 | if (!ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) && !have_pool_full(osdc)) | |
2324 | goto out; | |
2325 | ||
58eb7932 JL |
2326 | /* Scan list and see if there is anything to abort */ |
2327 | for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { | |
2328 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
2329 | struct rb_node *m; | |
2330 | ||
2331 | m = rb_first(&osd->o_requests); | |
2332 | while (m) { | |
2333 | struct ceph_osd_request *req = rb_entry(m, | |
2334 | struct ceph_osd_request, r_node); | |
2335 | m = rb_next(m); | |
2336 | ||
2337 | if (req->r_abort_on_full) { | |
2338 | victims = true; | |
2339 | break; | |
2340 | } | |
2341 | } | |
2342 | if (victims) | |
2343 | break; | |
2344 | } | |
2345 | ||
2346 | if (!victims) | |
2347 | goto out; | |
2348 | ||
2349 | /* | |
2350 | * Update the barrier to current epoch if it's behind that point, | |
2351 | * since we know we have some calls to be aborted in the tree. | |
2352 | */ | |
2353 | update_epoch_barrier(osdc, osdc->osdmap->epoch); | |
2354 | ||
fc36d0a4 JL |
2355 | for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { |
2356 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
2357 | struct rb_node *m; | |
2358 | ||
2359 | m = rb_first(&osd->o_requests); | |
2360 | while (m) { | |
2361 | struct ceph_osd_request *req = rb_entry(m, | |
2362 | struct ceph_osd_request, r_node); | |
2363 | m = rb_next(m); | |
2364 | ||
2365 | if (req->r_abort_on_full && | |
2366 | (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || | |
2367 | pool_full(osdc, req->r_t.target_oloc.pool))) | |
2368 | abort_request(req, -ENOSPC); | |
2369 | } | |
2370 | } | |
2371 | out: | |
58eb7932 | 2372 | dout("return abort_on_full barrier=%u\n", osdc->epoch_barrier); |
fc36d0a4 JL |
2373 | } |
2374 | ||
4609245e ID |
2375 | static void check_pool_dne(struct ceph_osd_request *req) |
2376 | { | |
2377 | struct ceph_osd_client *osdc = req->r_osdc; | |
2378 | struct ceph_osdmap *map = osdc->osdmap; | |
2379 | ||
2380 | verify_osdc_wrlocked(osdc); | |
2381 | WARN_ON(!map->epoch); | |
2382 | ||
2383 | if (req->r_attempts) { | |
2384 | /* | |
2385 | * We sent a request earlier, which means that | |
2386 | * previously the pool existed, and now it does not | |
2387 | * (i.e., it was deleted). | |
2388 | */ | |
2389 | req->r_map_dne_bound = map->epoch; | |
2390 | dout("%s req %p tid %llu pool disappeared\n", __func__, req, | |
2391 | req->r_tid); | |
2392 | } else { | |
2393 | dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, | |
2394 | req, req->r_tid, req->r_map_dne_bound, map->epoch); | |
2395 | } | |
2396 | ||
2397 | if (req->r_map_dne_bound) { | |
2398 | if (map->epoch >= req->r_map_dne_bound) { | |
2399 | /* we had a new enough map */ | |
2400 | pr_info_ratelimited("tid %llu pool does not exist\n", | |
2401 | req->r_tid); | |
2402 | complete_request(req, -ENOENT); | |
2403 | } | |
2404 | } else { | |
2405 | send_map_check(req); | |
2406 | } | |
2407 | } | |
2408 | ||
2409 | static void map_check_cb(struct ceph_mon_generic_request *greq) | |
2410 | { | |
2411 | struct ceph_osd_client *osdc = &greq->monc->client->osdc; | |
2412 | struct ceph_osd_request *req; | |
2413 | u64 tid = greq->private_data; | |
2414 | ||
2415 | WARN_ON(greq->result || !greq->u.newest); | |
2416 | ||
2417 | down_write(&osdc->lock); | |
2418 | req = lookup_request_mc(&osdc->map_checks, tid); | |
2419 | if (!req) { | |
2420 | dout("%s tid %llu dne\n", __func__, tid); | |
2421 | goto out_unlock; | |
2422 | } | |
2423 | ||
2424 | dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, | |
2425 | req, req->r_tid, req->r_map_dne_bound, greq->u.newest); | |
2426 | if (!req->r_map_dne_bound) | |
2427 | req->r_map_dne_bound = greq->u.newest; | |
2428 | erase_request_mc(&osdc->map_checks, req); | |
2429 | check_pool_dne(req); | |
2430 | ||
2431 | ceph_osdc_put_request(req); | |
2432 | out_unlock: | |
2433 | up_write(&osdc->lock); | |
2434 | } | |
2435 | ||
2436 | static void send_map_check(struct ceph_osd_request *req) | |
2437 | { | |
2438 | struct ceph_osd_client *osdc = req->r_osdc; | |
2439 | struct ceph_osd_request *lookup_req; | |
2440 | int ret; | |
2441 | ||
2442 | verify_osdc_wrlocked(osdc); | |
2443 | ||
2444 | lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); | |
2445 | if (lookup_req) { | |
2446 | WARN_ON(lookup_req != req); | |
2447 | return; | |
2448 | } | |
2449 | ||
2450 | ceph_osdc_get_request(req); | |
2451 | insert_request_mc(&osdc->map_checks, req); | |
2452 | ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", | |
2453 | map_check_cb, req->r_tid); | |
2454 | WARN_ON(ret); | |
2455 | } | |
2456 | ||
922dab61 ID |
2457 | /* |
2458 | * lingering requests, watch/notify v2 infrastructure | |
2459 | */ | |
2460 | static void linger_release(struct kref *kref) | |
2461 | { | |
2462 | struct ceph_osd_linger_request *lreq = | |
2463 | container_of(kref, struct ceph_osd_linger_request, kref); | |
2464 | ||
2465 | dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, | |
2466 | lreq->reg_req, lreq->ping_req); | |
2467 | WARN_ON(!RB_EMPTY_NODE(&lreq->node)); | |
2468 | WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); | |
4609245e | 2469 | WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); |
922dab61 | 2470 | WARN_ON(!list_empty(&lreq->scan_item)); |
b07d3c4b | 2471 | WARN_ON(!list_empty(&lreq->pending_lworks)); |
922dab61 ID |
2472 | WARN_ON(lreq->osd); |
2473 | ||
2474 | if (lreq->reg_req) | |
2475 | ceph_osdc_put_request(lreq->reg_req); | |
2476 | if (lreq->ping_req) | |
2477 | ceph_osdc_put_request(lreq->ping_req); | |
2478 | target_destroy(&lreq->t); | |
2479 | kfree(lreq); | |
2480 | } | |
2481 | ||
2482 | static void linger_put(struct ceph_osd_linger_request *lreq) | |
2483 | { | |
2484 | if (lreq) | |
2485 | kref_put(&lreq->kref, linger_release); | |
2486 | } | |
2487 | ||
2488 | static struct ceph_osd_linger_request * | |
2489 | linger_get(struct ceph_osd_linger_request *lreq) | |
2490 | { | |
2491 | kref_get(&lreq->kref); | |
2492 | return lreq; | |
2493 | } | |
2494 | ||
2495 | static struct ceph_osd_linger_request * | |
2496 | linger_alloc(struct ceph_osd_client *osdc) | |
2497 | { | |
2498 | struct ceph_osd_linger_request *lreq; | |
2499 | ||
2500 | lreq = kzalloc(sizeof(*lreq), GFP_NOIO); | |
2501 | if (!lreq) | |
2502 | return NULL; | |
2503 | ||
2504 | kref_init(&lreq->kref); | |
2505 | mutex_init(&lreq->lock); | |
2506 | RB_CLEAR_NODE(&lreq->node); | |
2507 | RB_CLEAR_NODE(&lreq->osdc_node); | |
4609245e | 2508 | RB_CLEAR_NODE(&lreq->mc_node); |
922dab61 | 2509 | INIT_LIST_HEAD(&lreq->scan_item); |
b07d3c4b | 2510 | INIT_LIST_HEAD(&lreq->pending_lworks); |
922dab61 | 2511 | init_completion(&lreq->reg_commit_wait); |
19079203 | 2512 | init_completion(&lreq->notify_finish_wait); |
922dab61 ID |
2513 | |
2514 | lreq->osdc = osdc; | |
2515 | target_init(&lreq->t); | |
2516 | ||
2517 | dout("%s lreq %p\n", __func__, lreq); | |
2518 | return lreq; | |
2519 | } | |
2520 | ||
2521 | DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) | |
2522 | DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) | |
4609245e | 2523 | DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) |
922dab61 ID |
2524 | |
2525 | /* | |
2526 | * Create linger request <-> OSD session relation. | |
2527 | * | |
2528 | * @lreq has to be registered, @osd may be homeless. | |
2529 | */ | |
2530 | static void link_linger(struct ceph_osd *osd, | |
2531 | struct ceph_osd_linger_request *lreq) | |
2532 | { | |
2533 | verify_osd_locked(osd); | |
2534 | WARN_ON(!lreq->linger_id || lreq->osd); | |
2535 | dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, | |
2536 | osd->o_osd, lreq, lreq->linger_id); | |
2537 | ||
2538 | if (!osd_homeless(osd)) | |
2539 | __remove_osd_from_lru(osd); | |
2540 | else | |
2541 | atomic_inc(&osd->o_osdc->num_homeless); | |
2542 | ||
2543 | get_osd(osd); | |
2544 | insert_linger(&osd->o_linger_requests, lreq); | |
2545 | lreq->osd = osd; | |
2546 | } | |
2547 | ||
2548 | static void unlink_linger(struct ceph_osd *osd, | |
2549 | struct ceph_osd_linger_request *lreq) | |
2550 | { | |
2551 | verify_osd_locked(osd); | |
2552 | WARN_ON(lreq->osd != osd); | |
2553 | dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, | |
2554 | osd->o_osd, lreq, lreq->linger_id); | |
2555 | ||
2556 | lreq->osd = NULL; | |
2557 | erase_linger(&osd->o_linger_requests, lreq); | |
2558 | put_osd(osd); | |
2559 | ||
2560 | if (!osd_homeless(osd)) | |
2561 | maybe_move_osd_to_lru(osd); | |
2562 | else | |
2563 | atomic_dec(&osd->o_osdc->num_homeless); | |
2564 | } | |
2565 | ||
2566 | static bool __linger_registered(struct ceph_osd_linger_request *lreq) | |
2567 | { | |
2568 | verify_osdc_locked(lreq->osdc); | |
2569 | ||
2570 | return !RB_EMPTY_NODE(&lreq->osdc_node); | |
2571 | } | |
2572 | ||
2573 | static bool linger_registered(struct ceph_osd_linger_request *lreq) | |
2574 | { | |
2575 | struct ceph_osd_client *osdc = lreq->osdc; | |
2576 | bool registered; | |
2577 | ||
2578 | down_read(&osdc->lock); | |
2579 | registered = __linger_registered(lreq); | |
2580 | up_read(&osdc->lock); | |
2581 | ||
2582 | return registered; | |
2583 | } | |
2584 | ||
2585 | static void linger_register(struct ceph_osd_linger_request *lreq) | |
2586 | { | |
2587 | struct ceph_osd_client *osdc = lreq->osdc; | |
2588 | ||
2589 | verify_osdc_wrlocked(osdc); | |
2590 | WARN_ON(lreq->linger_id); | |
2591 | ||
2592 | linger_get(lreq); | |
2593 | lreq->linger_id = ++osdc->last_linger_id; | |
2594 | insert_linger_osdc(&osdc->linger_requests, lreq); | |
2595 | } | |
2596 | ||
2597 | static void linger_unregister(struct ceph_osd_linger_request *lreq) | |
2598 | { | |
2599 | struct ceph_osd_client *osdc = lreq->osdc; | |
2600 | ||
2601 | verify_osdc_wrlocked(osdc); | |
2602 | ||
2603 | erase_linger_osdc(&osdc->linger_requests, lreq); | |
2604 | linger_put(lreq); | |
2605 | } | |
2606 | ||
2607 | static void cancel_linger_request(struct ceph_osd_request *req) | |
2608 | { | |
2609 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
2610 | ||
2611 | WARN_ON(!req->r_linger); | |
2612 | cancel_request(req); | |
2613 | linger_put(lreq); | |
2614 | } | |
2615 | ||
2616 | struct linger_work { | |
2617 | struct work_struct work; | |
2618 | struct ceph_osd_linger_request *lreq; | |
b07d3c4b ID |
2619 | struct list_head pending_item; |
2620 | unsigned long queued_stamp; | |
922dab61 ID |
2621 | |
2622 | union { | |
2623 | struct { | |
2624 | u64 notify_id; | |
2625 | u64 notifier_id; | |
2626 | void *payload; /* points into @msg front */ | |
2627 | size_t payload_len; | |
2628 | ||
2629 | struct ceph_msg *msg; /* for ceph_msg_put() */ | |
2630 | } notify; | |
2631 | struct { | |
2632 | int err; | |
2633 | } error; | |
2634 | }; | |
2635 | }; | |
2636 | ||
2637 | static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, | |
2638 | work_func_t workfn) | |
2639 | { | |
2640 | struct linger_work *lwork; | |
2641 | ||
2642 | lwork = kzalloc(sizeof(*lwork), GFP_NOIO); | |
2643 | if (!lwork) | |
2644 | return NULL; | |
2645 | ||
2646 | INIT_WORK(&lwork->work, workfn); | |
b07d3c4b | 2647 | INIT_LIST_HEAD(&lwork->pending_item); |
922dab61 ID |
2648 | lwork->lreq = linger_get(lreq); |
2649 | ||
2650 | return lwork; | |
2651 | } | |
2652 | ||
2653 | static void lwork_free(struct linger_work *lwork) | |
2654 | { | |
2655 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
2656 | ||
b07d3c4b ID |
2657 | mutex_lock(&lreq->lock); |
2658 | list_del(&lwork->pending_item); | |
2659 | mutex_unlock(&lreq->lock); | |
2660 | ||
922dab61 ID |
2661 | linger_put(lreq); |
2662 | kfree(lwork); | |
2663 | } | |
2664 | ||
2665 | static void lwork_queue(struct linger_work *lwork) | |
2666 | { | |
2667 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
2668 | struct ceph_osd_client *osdc = lreq->osdc; | |
2669 | ||
2670 | verify_lreq_locked(lreq); | |
b07d3c4b ID |
2671 | WARN_ON(!list_empty(&lwork->pending_item)); |
2672 | ||
2673 | lwork->queued_stamp = jiffies; | |
2674 | list_add_tail(&lwork->pending_item, &lreq->pending_lworks); | |
922dab61 ID |
2675 | queue_work(osdc->notify_wq, &lwork->work); |
2676 | } | |
2677 | ||
2678 | static void do_watch_notify(struct work_struct *w) | |
2679 | { | |
2680 | struct linger_work *lwork = container_of(w, struct linger_work, work); | |
2681 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
2682 | ||
2683 | if (!linger_registered(lreq)) { | |
2684 | dout("%s lreq %p not registered\n", __func__, lreq); | |
2685 | goto out; | |
2686 | } | |
2687 | ||
19079203 | 2688 | WARN_ON(!lreq->is_watch); |
922dab61 ID |
2689 | dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", |
2690 | __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, | |
2691 | lwork->notify.payload_len); | |
2692 | lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, | |
2693 | lwork->notify.notifier_id, lwork->notify.payload, | |
2694 | lwork->notify.payload_len); | |
2695 | ||
2696 | out: | |
2697 | ceph_msg_put(lwork->notify.msg); | |
2698 | lwork_free(lwork); | |
2699 | } | |
2700 | ||
2701 | static void do_watch_error(struct work_struct *w) | |
2702 | { | |
2703 | struct linger_work *lwork = container_of(w, struct linger_work, work); | |
2704 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
2705 | ||
2706 | if (!linger_registered(lreq)) { | |
2707 | dout("%s lreq %p not registered\n", __func__, lreq); | |
2708 | goto out; | |
2709 | } | |
2710 | ||
2711 | dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); | |
2712 | lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); | |
2713 | ||
2714 | out: | |
2715 | lwork_free(lwork); | |
2716 | } | |
2717 | ||
2718 | static void queue_watch_error(struct ceph_osd_linger_request *lreq) | |
2719 | { | |
2720 | struct linger_work *lwork; | |
2721 | ||
2722 | lwork = lwork_alloc(lreq, do_watch_error); | |
2723 | if (!lwork) { | |
2724 | pr_err("failed to allocate error-lwork\n"); | |
2725 | return; | |
2726 | } | |
2727 | ||
2728 | lwork->error.err = lreq->last_error; | |
2729 | lwork_queue(lwork); | |
2730 | } | |
2731 | ||
2732 | static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, | |
2733 | int result) | |
2734 | { | |
2735 | if (!completion_done(&lreq->reg_commit_wait)) { | |
2736 | lreq->reg_commit_error = (result <= 0 ? result : 0); | |
2737 | complete_all(&lreq->reg_commit_wait); | |
2738 | } | |
2739 | } | |
2740 | ||
2741 | static void linger_commit_cb(struct ceph_osd_request *req) | |
2742 | { | |
2743 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
2744 | ||
2745 | mutex_lock(&lreq->lock); | |
2746 | dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, | |
2747 | lreq->linger_id, req->r_result); | |
922dab61 ID |
2748 | linger_reg_commit_complete(lreq, req->r_result); |
2749 | lreq->committed = true; | |
2750 | ||
19079203 ID |
2751 | if (!lreq->is_watch) { |
2752 | struct ceph_osd_data *osd_data = | |
2753 | osd_req_op_data(req, 0, notify, response_data); | |
2754 | void *p = page_address(osd_data->pages[0]); | |
2755 | ||
2756 | WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || | |
2757 | osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); | |
2758 | ||
2759 | /* make note of the notify_id */ | |
2760 | if (req->r_ops[0].outdata_len >= sizeof(u64)) { | |
2761 | lreq->notify_id = ceph_decode_64(&p); | |
2762 | dout("lreq %p notify_id %llu\n", lreq, | |
2763 | lreq->notify_id); | |
2764 | } else { | |
2765 | dout("lreq %p no notify_id\n", lreq); | |
2766 | } | |
2767 | } | |
2768 | ||
922dab61 ID |
2769 | mutex_unlock(&lreq->lock); |
2770 | linger_put(lreq); | |
2771 | } | |
2772 | ||
2773 | static int normalize_watch_error(int err) | |
2774 | { | |
2775 | /* | |
2776 | * Translate ENOENT -> ENOTCONN so that a delete->disconnection | |
2777 | * notification and a failure to reconnect because we raced with | |
2778 | * the delete appear the same to the user. | |
2779 | */ | |
2780 | if (err == -ENOENT) | |
2781 | err = -ENOTCONN; | |
2782 | ||
2783 | return err; | |
2784 | } | |
2785 | ||
2786 | static void linger_reconnect_cb(struct ceph_osd_request *req) | |
2787 | { | |
2788 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
2789 | ||
2790 | mutex_lock(&lreq->lock); | |
2791 | dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, | |
2792 | lreq, lreq->linger_id, req->r_result, lreq->last_error); | |
2793 | if (req->r_result < 0) { | |
2794 | if (!lreq->last_error) { | |
2795 | lreq->last_error = normalize_watch_error(req->r_result); | |
2796 | queue_watch_error(lreq); | |
2797 | } | |
2798 | } | |
2799 | ||
2800 | mutex_unlock(&lreq->lock); | |
2801 | linger_put(lreq); | |
2802 | } | |
2803 | ||
2804 | static void send_linger(struct ceph_osd_linger_request *lreq) | |
2805 | { | |
2806 | struct ceph_osd_request *req = lreq->reg_req; | |
2807 | struct ceph_osd_req_op *op = &req->r_ops[0]; | |
2808 | ||
2809 | verify_osdc_wrlocked(req->r_osdc); | |
2810 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); | |
2811 | ||
2812 | if (req->r_osd) | |
2813 | cancel_linger_request(req); | |
2814 | ||
2815 | request_reinit(req); | |
2816 | ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); | |
2817 | ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); | |
2818 | req->r_flags = lreq->t.flags; | |
2819 | req->r_mtime = lreq->mtime; | |
2820 | ||
2821 | mutex_lock(&lreq->lock); | |
19079203 | 2822 | if (lreq->is_watch && lreq->committed) { |
922dab61 ID |
2823 | WARN_ON(op->op != CEPH_OSD_OP_WATCH || |
2824 | op->watch.cookie != lreq->linger_id); | |
2825 | op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; | |
2826 | op->watch.gen = ++lreq->register_gen; | |
2827 | dout("lreq %p reconnect register_gen %u\n", lreq, | |
2828 | op->watch.gen); | |
2829 | req->r_callback = linger_reconnect_cb; | |
2830 | } else { | |
19079203 ID |
2831 | if (!lreq->is_watch) |
2832 | lreq->notify_id = 0; | |
2833 | else | |
2834 | WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); | |
922dab61 ID |
2835 | dout("lreq %p register\n", lreq); |
2836 | req->r_callback = linger_commit_cb; | |
2837 | } | |
2838 | mutex_unlock(&lreq->lock); | |
2839 | ||
2840 | req->r_priv = linger_get(lreq); | |
2841 | req->r_linger = true; | |
2842 | ||
2843 | submit_request(req, true); | |
2844 | } | |
2845 | ||
2846 | static void linger_ping_cb(struct ceph_osd_request *req) | |
2847 | { | |
2848 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
2849 | ||
2850 | mutex_lock(&lreq->lock); | |
2851 | dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", | |
2852 | __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, | |
2853 | lreq->last_error); | |
2854 | if (lreq->register_gen == req->r_ops[0].watch.gen) { | |
b07d3c4b ID |
2855 | if (!req->r_result) { |
2856 | lreq->watch_valid_thru = lreq->ping_sent; | |
2857 | } else if (!lreq->last_error) { | |
922dab61 ID |
2858 | lreq->last_error = normalize_watch_error(req->r_result); |
2859 | queue_watch_error(lreq); | |
2860 | } | |
2861 | } else { | |
2862 | dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, | |
2863 | lreq->register_gen, req->r_ops[0].watch.gen); | |
2864 | } | |
2865 | ||
2866 | mutex_unlock(&lreq->lock); | |
2867 | linger_put(lreq); | |
2868 | } | |
2869 | ||
2870 | static void send_linger_ping(struct ceph_osd_linger_request *lreq) | |
2871 | { | |
2872 | struct ceph_osd_client *osdc = lreq->osdc; | |
2873 | struct ceph_osd_request *req = lreq->ping_req; | |
2874 | struct ceph_osd_req_op *op = &req->r_ops[0]; | |
2875 | ||
b7ec35b3 | 2876 | if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { |
922dab61 ID |
2877 | dout("%s PAUSERD\n", __func__); |
2878 | return; | |
2879 | } | |
2880 | ||
2881 | lreq->ping_sent = jiffies; | |
2882 | dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", | |
2883 | __func__, lreq, lreq->linger_id, lreq->ping_sent, | |
2884 | lreq->register_gen); | |
2885 | ||
2886 | if (req->r_osd) | |
2887 | cancel_linger_request(req); | |
2888 | ||
2889 | request_reinit(req); | |
2890 | target_copy(&req->r_t, &lreq->t); | |
2891 | ||
2892 | WARN_ON(op->op != CEPH_OSD_OP_WATCH || | |
2893 | op->watch.cookie != lreq->linger_id || | |
2894 | op->watch.op != CEPH_OSD_WATCH_OP_PING); | |
2895 | op->watch.gen = lreq->register_gen; | |
2896 | req->r_callback = linger_ping_cb; | |
2897 | req->r_priv = linger_get(lreq); | |
2898 | req->r_linger = true; | |
2899 | ||
2900 | ceph_osdc_get_request(req); | |
2901 | account_request(req); | |
2902 | req->r_tid = atomic64_inc_return(&osdc->last_tid); | |
2903 | link_request(lreq->osd, req); | |
2904 | send_request(req); | |
2905 | } | |
2906 | ||
2907 | static void linger_submit(struct ceph_osd_linger_request *lreq) | |
2908 | { | |
2909 | struct ceph_osd_client *osdc = lreq->osdc; | |
2910 | struct ceph_osd *osd; | |
2911 | ||
7de030d6 | 2912 | calc_target(osdc, &lreq->t, NULL, false); |
922dab61 ID |
2913 | osd = lookup_create_osd(osdc, lreq->t.osd, true); |
2914 | link_linger(osd, lreq); | |
2915 | ||
2916 | send_linger(lreq); | |
2917 | } | |
2918 | ||
4609245e ID |
2919 | static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) |
2920 | { | |
2921 | struct ceph_osd_client *osdc = lreq->osdc; | |
2922 | struct ceph_osd_linger_request *lookup_lreq; | |
2923 | ||
2924 | verify_osdc_wrlocked(osdc); | |
2925 | ||
2926 | lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, | |
2927 | lreq->linger_id); | |
2928 | if (!lookup_lreq) | |
2929 | return; | |
2930 | ||
2931 | WARN_ON(lookup_lreq != lreq); | |
2932 | erase_linger_mc(&osdc->linger_map_checks, lreq); | |
2933 | linger_put(lreq); | |
2934 | } | |
2935 | ||
922dab61 ID |
2936 | /* |
2937 | * @lreq has to be both registered and linked. | |
2938 | */ | |
2939 | static void __linger_cancel(struct ceph_osd_linger_request *lreq) | |
2940 | { | |
19079203 | 2941 | if (lreq->is_watch && lreq->ping_req->r_osd) |
922dab61 ID |
2942 | cancel_linger_request(lreq->ping_req); |
2943 | if (lreq->reg_req->r_osd) | |
2944 | cancel_linger_request(lreq->reg_req); | |
4609245e | 2945 | cancel_linger_map_check(lreq); |
922dab61 ID |
2946 | unlink_linger(lreq->osd, lreq); |
2947 | linger_unregister(lreq); | |
2948 | } | |
2949 | ||
2950 | static void linger_cancel(struct ceph_osd_linger_request *lreq) | |
2951 | { | |
2952 | struct ceph_osd_client *osdc = lreq->osdc; | |
2953 | ||
2954 | down_write(&osdc->lock); | |
2955 | if (__linger_registered(lreq)) | |
2956 | __linger_cancel(lreq); | |
2957 | up_write(&osdc->lock); | |
2958 | } | |
2959 | ||
4609245e ID |
2960 | static void send_linger_map_check(struct ceph_osd_linger_request *lreq); |
2961 | ||
2962 | static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) | |
2963 | { | |
2964 | struct ceph_osd_client *osdc = lreq->osdc; | |
2965 | struct ceph_osdmap *map = osdc->osdmap; | |
2966 | ||
2967 | verify_osdc_wrlocked(osdc); | |
2968 | WARN_ON(!map->epoch); | |
2969 | ||
2970 | if (lreq->register_gen) { | |
2971 | lreq->map_dne_bound = map->epoch; | |
2972 | dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, | |
2973 | lreq, lreq->linger_id); | |
2974 | } else { | |
2975 | dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", | |
2976 | __func__, lreq, lreq->linger_id, lreq->map_dne_bound, | |
2977 | map->epoch); | |
2978 | } | |
2979 | ||
2980 | if (lreq->map_dne_bound) { | |
2981 | if (map->epoch >= lreq->map_dne_bound) { | |
2982 | /* we had a new enough map */ | |
2983 | pr_info("linger_id %llu pool does not exist\n", | |
2984 | lreq->linger_id); | |
2985 | linger_reg_commit_complete(lreq, -ENOENT); | |
2986 | __linger_cancel(lreq); | |
2987 | } | |
2988 | } else { | |
2989 | send_linger_map_check(lreq); | |
2990 | } | |
2991 | } | |
2992 | ||
2993 | static void linger_map_check_cb(struct ceph_mon_generic_request *greq) | |
2994 | { | |
2995 | struct ceph_osd_client *osdc = &greq->monc->client->osdc; | |
2996 | struct ceph_osd_linger_request *lreq; | |
2997 | u64 linger_id = greq->private_data; | |
2998 | ||
2999 | WARN_ON(greq->result || !greq->u.newest); | |
3000 | ||
3001 | down_write(&osdc->lock); | |
3002 | lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); | |
3003 | if (!lreq) { | |
3004 | dout("%s linger_id %llu dne\n", __func__, linger_id); | |
3005 | goto out_unlock; | |
3006 | } | |
3007 | ||
3008 | dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", | |
3009 | __func__, lreq, lreq->linger_id, lreq->map_dne_bound, | |
3010 | greq->u.newest); | |
3011 | if (!lreq->map_dne_bound) | |
3012 | lreq->map_dne_bound = greq->u.newest; | |
3013 | erase_linger_mc(&osdc->linger_map_checks, lreq); | |
3014 | check_linger_pool_dne(lreq); | |
3015 | ||
3016 | linger_put(lreq); | |
3017 | out_unlock: | |
3018 | up_write(&osdc->lock); | |
3019 | } | |
3020 | ||
3021 | static void send_linger_map_check(struct ceph_osd_linger_request *lreq) | |
3022 | { | |
3023 | struct ceph_osd_client *osdc = lreq->osdc; | |
3024 | struct ceph_osd_linger_request *lookup_lreq; | |
3025 | int ret; | |
3026 | ||
3027 | verify_osdc_wrlocked(osdc); | |
3028 | ||
3029 | lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, | |
3030 | lreq->linger_id); | |
3031 | if (lookup_lreq) { | |
3032 | WARN_ON(lookup_lreq != lreq); | |
3033 | return; | |
3034 | } | |
3035 | ||
3036 | linger_get(lreq); | |
3037 | insert_linger_mc(&osdc->linger_map_checks, lreq); | |
3038 | ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", | |
3039 | linger_map_check_cb, lreq->linger_id); | |
3040 | WARN_ON(ret); | |
3041 | } | |
3042 | ||
922dab61 ID |
3043 | static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) |
3044 | { | |
3045 | int ret; | |
3046 | ||
3047 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); | |
3048 | ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); | |
3049 | return ret ?: lreq->reg_commit_error; | |
3050 | } | |
3051 | ||
19079203 ID |
3052 | static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) |
3053 | { | |
3054 | int ret; | |
3055 | ||
3056 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); | |
3057 | ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); | |
3058 | return ret ?: lreq->notify_finish_error; | |
3059 | } | |
3060 | ||
f24e9980 | 3061 | /* |
fbca9635 ID |
3062 | * Timeout callback, called every N seconds. When 1 or more OSD |
3063 | * requests has been active for more than N seconds, we send a keepalive | |
3064 | * (tag + timestamp) to its OSD to ensure any communications channel | |
3065 | * reset is detected. | |
f24e9980 SW |
3066 | */ |
3067 | static void handle_timeout(struct work_struct *work) | |
3068 | { | |
3069 | struct ceph_osd_client *osdc = | |
3070 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
a319bf56 | 3071 | struct ceph_options *opts = osdc->client->options; |
5aea3dcd | 3072 | unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; |
7cc5e38f | 3073 | unsigned long expiry_cutoff = jiffies - opts->osd_request_timeout; |
5aea3dcd ID |
3074 | LIST_HEAD(slow_osds); |
3075 | struct rb_node *n, *p; | |
f24e9980 | 3076 | |
5aea3dcd ID |
3077 | dout("%s osdc %p\n", __func__, osdc); |
3078 | down_write(&osdc->lock); | |
f24e9980 | 3079 | |
422d2cb8 YS |
3080 | /* |
3081 | * ping osds that are a bit slow. this ensures that if there | |
3082 | * is a break in the TCP connection we will notice, and reopen | |
3083 | * a connection with that osd (from the fault callback). | |
3084 | */ | |
5aea3dcd ID |
3085 | for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { |
3086 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
3087 | bool found = false; | |
3088 | ||
7cc5e38f | 3089 | for (p = rb_first(&osd->o_requests); p; ) { |
5aea3dcd ID |
3090 | struct ceph_osd_request *req = |
3091 | rb_entry(p, struct ceph_osd_request, r_node); | |
3092 | ||
7cc5e38f ID |
3093 | p = rb_next(p); /* abort_request() */ |
3094 | ||
5aea3dcd ID |
3095 | if (time_before(req->r_stamp, cutoff)) { |
3096 | dout(" req %p tid %llu on osd%d is laggy\n", | |
3097 | req, req->r_tid, osd->o_osd); | |
3098 | found = true; | |
3099 | } | |
7cc5e38f ID |
3100 | if (opts->osd_request_timeout && |
3101 | time_before(req->r_start_stamp, expiry_cutoff)) { | |
3102 | pr_err_ratelimited("tid %llu on osd%d timeout\n", | |
3103 | req->r_tid, osd->o_osd); | |
3104 | abort_request(req, -ETIMEDOUT); | |
3105 | } | |
5aea3dcd | 3106 | } |
922dab61 ID |
3107 | for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { |
3108 | struct ceph_osd_linger_request *lreq = | |
3109 | rb_entry(p, struct ceph_osd_linger_request, node); | |
3110 | ||
3111 | dout(" lreq %p linger_id %llu is served by osd%d\n", | |
3112 | lreq, lreq->linger_id, osd->o_osd); | |
3113 | found = true; | |
3114 | ||
3115 | mutex_lock(&lreq->lock); | |
19079203 | 3116 | if (lreq->is_watch && lreq->committed && !lreq->last_error) |
922dab61 ID |
3117 | send_linger_ping(lreq); |
3118 | mutex_unlock(&lreq->lock); | |
3119 | } | |
422d2cb8 | 3120 | |
5aea3dcd ID |
3121 | if (found) |
3122 | list_move_tail(&osd->o_keepalive_item, &slow_osds); | |
422d2cb8 | 3123 | } |
5aea3dcd | 3124 | |
7cc5e38f ID |
3125 | if (opts->osd_request_timeout) { |
3126 | for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { | |
3127 | struct ceph_osd_request *req = | |
3128 | rb_entry(p, struct ceph_osd_request, r_node); | |
3129 | ||
3130 | p = rb_next(p); /* abort_request() */ | |
3131 | ||
3132 | if (time_before(req->r_start_stamp, expiry_cutoff)) { | |
3133 | pr_err_ratelimited("tid %llu on osd%d timeout\n", | |
3134 | req->r_tid, osdc->homeless_osd.o_osd); | |
3135 | abort_request(req, -ETIMEDOUT); | |
3136 | } | |
3137 | } | |
3138 | } | |
3139 | ||
5aea3dcd ID |
3140 | if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) |
3141 | maybe_request_map(osdc); | |
3142 | ||
422d2cb8 | 3143 | while (!list_empty(&slow_osds)) { |
5aea3dcd ID |
3144 | struct ceph_osd *osd = list_first_entry(&slow_osds, |
3145 | struct ceph_osd, | |
3146 | o_keepalive_item); | |
422d2cb8 | 3147 | list_del_init(&osd->o_keepalive_item); |
f24e9980 SW |
3148 | ceph_con_keepalive(&osd->o_con); |
3149 | } | |
3150 | ||
5aea3dcd | 3151 | up_write(&osdc->lock); |
fbca9635 ID |
3152 | schedule_delayed_work(&osdc->timeout_work, |
3153 | osdc->client->options->osd_keepalive_timeout); | |
f24e9980 SW |
3154 | } |
3155 | ||
f5a2041b YS |
3156 | static void handle_osds_timeout(struct work_struct *work) |
3157 | { | |
3158 | struct ceph_osd_client *osdc = | |
3159 | container_of(work, struct ceph_osd_client, | |
3160 | osds_timeout_work.work); | |
a319bf56 | 3161 | unsigned long delay = osdc->client->options->osd_idle_ttl / 4; |
42a2c09f | 3162 | struct ceph_osd *osd, *nosd; |
f5a2041b | 3163 | |
42a2c09f | 3164 | dout("%s osdc %p\n", __func__, osdc); |
5aea3dcd | 3165 | down_write(&osdc->lock); |
42a2c09f ID |
3166 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { |
3167 | if (time_before(jiffies, osd->lru_ttl)) | |
3168 | break; | |
3169 | ||
5aea3dcd | 3170 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); |
922dab61 | 3171 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); |
5aea3dcd | 3172 | close_osd(osd); |
42a2c09f | 3173 | } |
f5a2041b | 3174 | |
5aea3dcd | 3175 | up_write(&osdc->lock); |
f5a2041b YS |
3176 | schedule_delayed_work(&osdc->osds_timeout_work, |
3177 | round_jiffies_relative(delay)); | |
3178 | } | |
3179 | ||
205ee118 ID |
3180 | static int ceph_oloc_decode(void **p, void *end, |
3181 | struct ceph_object_locator *oloc) | |
3182 | { | |
3183 | u8 struct_v, struct_cv; | |
3184 | u32 len; | |
3185 | void *struct_end; | |
3186 | int ret = 0; | |
3187 | ||
3188 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
3189 | struct_v = ceph_decode_8(p); | |
3190 | struct_cv = ceph_decode_8(p); | |
3191 | if (struct_v < 3) { | |
3192 | pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", | |
3193 | struct_v, struct_cv); | |
3194 | goto e_inval; | |
3195 | } | |
3196 | if (struct_cv > 6) { | |
3197 | pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", | |
3198 | struct_v, struct_cv); | |
3199 | goto e_inval; | |
3200 | } | |
3201 | len = ceph_decode_32(p); | |
3202 | ceph_decode_need(p, end, len, e_inval); | |
3203 | struct_end = *p + len; | |
3204 | ||
3205 | oloc->pool = ceph_decode_64(p); | |
3206 | *p += 4; /* skip preferred */ | |
3207 | ||
3208 | len = ceph_decode_32(p); | |
3209 | if (len > 0) { | |
3210 | pr_warn("ceph_object_locator::key is set\n"); | |
3211 | goto e_inval; | |
3212 | } | |
3213 | ||
3214 | if (struct_v >= 5) { | |
cd08e0a2 YZ |
3215 | bool changed = false; |
3216 | ||
205ee118 ID |
3217 | len = ceph_decode_32(p); |
3218 | if (len > 0) { | |
30c156d9 | 3219 | ceph_decode_need(p, end, len, e_inval); |
cd08e0a2 YZ |
3220 | if (!oloc->pool_ns || |
3221 | ceph_compare_string(oloc->pool_ns, *p, len)) | |
3222 | changed = true; | |
30c156d9 | 3223 | *p += len; |
cd08e0a2 YZ |
3224 | } else { |
3225 | if (oloc->pool_ns) | |
3226 | changed = true; | |
3227 | } | |
3228 | if (changed) { | |
3229 | /* redirect changes namespace */ | |
3230 | pr_warn("ceph_object_locator::nspace is changed\n"); | |
3231 | goto e_inval; | |
205ee118 ID |
3232 | } |
3233 | } | |
3234 | ||
3235 | if (struct_v >= 6) { | |
3236 | s64 hash = ceph_decode_64(p); | |
3237 | if (hash != -1) { | |
3238 | pr_warn("ceph_object_locator::hash is set\n"); | |
3239 | goto e_inval; | |
3240 | } | |
3241 | } | |
3242 | ||
3243 | /* skip the rest */ | |
3244 | *p = struct_end; | |
3245 | out: | |
3246 | return ret; | |
3247 | ||
3248 | e_inval: | |
3249 | ret = -EINVAL; | |
3250 | goto out; | |
3251 | } | |
3252 | ||
3253 | static int ceph_redirect_decode(void **p, void *end, | |
3254 | struct ceph_request_redirect *redir) | |
3255 | { | |
3256 | u8 struct_v, struct_cv; | |
3257 | u32 len; | |
3258 | void *struct_end; | |
3259 | int ret; | |
3260 | ||
3261 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
3262 | struct_v = ceph_decode_8(p); | |
3263 | struct_cv = ceph_decode_8(p); | |
3264 | if (struct_cv > 1) { | |
3265 | pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", | |
3266 | struct_v, struct_cv); | |
3267 | goto e_inval; | |
3268 | } | |
3269 | len = ceph_decode_32(p); | |
3270 | ceph_decode_need(p, end, len, e_inval); | |
3271 | struct_end = *p + len; | |
3272 | ||
3273 | ret = ceph_oloc_decode(p, end, &redir->oloc); | |
3274 | if (ret) | |
3275 | goto out; | |
3276 | ||
3277 | len = ceph_decode_32(p); | |
3278 | if (len > 0) { | |
3279 | pr_warn("ceph_request_redirect::object_name is set\n"); | |
3280 | goto e_inval; | |
3281 | } | |
3282 | ||
3283 | len = ceph_decode_32(p); | |
3284 | *p += len; /* skip osd_instructions */ | |
3285 | ||
3286 | /* skip the rest */ | |
3287 | *p = struct_end; | |
3288 | out: | |
3289 | return ret; | |
3290 | ||
3291 | e_inval: | |
3292 | ret = -EINVAL; | |
3293 | goto out; | |
3294 | } | |
3295 | ||
fe5da05e ID |
3296 | struct MOSDOpReply { |
3297 | struct ceph_pg pgid; | |
3298 | u64 flags; | |
3299 | int result; | |
3300 | u32 epoch; | |
3301 | int num_ops; | |
3302 | u32 outdata_len[CEPH_OSD_MAX_OPS]; | |
3303 | s32 rval[CEPH_OSD_MAX_OPS]; | |
3304 | int retry_attempt; | |
3305 | struct ceph_eversion replay_version; | |
3306 | u64 user_version; | |
3307 | struct ceph_request_redirect redirect; | |
3308 | }; | |
25845472 | 3309 | |
fe5da05e | 3310 | static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) |
f24e9980 | 3311 | { |
fe5da05e ID |
3312 | void *p = msg->front.iov_base; |
3313 | void *const end = p + msg->front.iov_len; | |
3314 | u16 version = le16_to_cpu(msg->hdr.version); | |
3315 | struct ceph_eversion bad_replay_version; | |
b0b31a8f | 3316 | u8 decode_redir; |
fe5da05e ID |
3317 | u32 len; |
3318 | int ret; | |
3319 | int i; | |
1b83bef2 | 3320 | |
fe5da05e ID |
3321 | ceph_decode_32_safe(&p, end, len, e_inval); |
3322 | ceph_decode_need(&p, end, len, e_inval); | |
3323 | p += len; /* skip oid */ | |
1b83bef2 | 3324 | |
fe5da05e ID |
3325 | ret = ceph_decode_pgid(&p, end, &m->pgid); |
3326 | if (ret) | |
3327 | return ret; | |
1b83bef2 | 3328 | |
fe5da05e ID |
3329 | ceph_decode_64_safe(&p, end, m->flags, e_inval); |
3330 | ceph_decode_32_safe(&p, end, m->result, e_inval); | |
3331 | ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); | |
3332 | memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); | |
3333 | p += sizeof(bad_replay_version); | |
3334 | ceph_decode_32_safe(&p, end, m->epoch, e_inval); | |
1b83bef2 | 3335 | |
fe5da05e ID |
3336 | ceph_decode_32_safe(&p, end, m->num_ops, e_inval); |
3337 | if (m->num_ops > ARRAY_SIZE(m->outdata_len)) | |
3338 | goto e_inval; | |
1b83bef2 | 3339 | |
fe5da05e ID |
3340 | ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), |
3341 | e_inval); | |
3342 | for (i = 0; i < m->num_ops; i++) { | |
1b83bef2 | 3343 | struct ceph_osd_op *op = p; |
1b83bef2 | 3344 | |
fe5da05e | 3345 | m->outdata_len[i] = le32_to_cpu(op->payload_len); |
1b83bef2 SW |
3346 | p += sizeof(*op); |
3347 | } | |
1b83bef2 | 3348 | |
fe5da05e ID |
3349 | ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); |
3350 | for (i = 0; i < m->num_ops; i++) | |
3351 | ceph_decode_32_safe(&p, end, m->rval[i], e_inval); | |
f24e9980 | 3352 | |
fe5da05e ID |
3353 | if (version >= 5) { |
3354 | ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); | |
3355 | memcpy(&m->replay_version, p, sizeof(m->replay_version)); | |
3356 | p += sizeof(m->replay_version); | |
3357 | ceph_decode_64_safe(&p, end, m->user_version, e_inval); | |
3358 | } else { | |
3359 | m->replay_version = bad_replay_version; /* struct */ | |
3360 | m->user_version = le64_to_cpu(m->replay_version.version); | |
3361 | } | |
eb845ff1 | 3362 | |
fe5da05e ID |
3363 | if (version >= 6) { |
3364 | if (version >= 7) | |
3365 | ceph_decode_8_safe(&p, end, decode_redir, e_inval); | |
b0b31a8f ID |
3366 | else |
3367 | decode_redir = 1; | |
3368 | } else { | |
3369 | decode_redir = 0; | |
3370 | } | |
3371 | ||
3372 | if (decode_redir) { | |
fe5da05e ID |
3373 | ret = ceph_redirect_decode(&p, end, &m->redirect); |
3374 | if (ret) | |
3375 | return ret; | |
205ee118 | 3376 | } else { |
fe5da05e | 3377 | ceph_oloc_init(&m->redirect.oloc); |
205ee118 | 3378 | } |
f24e9980 | 3379 | |
fe5da05e ID |
3380 | return 0; |
3381 | ||
3382 | e_inval: | |
3383 | return -EINVAL; | |
3384 | } | |
3385 | ||
3386 | /* | |
b18b9550 ID |
3387 | * Handle MOSDOpReply. Set ->r_result and call the callback if it is |
3388 | * specified. | |
fe5da05e | 3389 | */ |
5aea3dcd | 3390 | static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) |
fe5da05e | 3391 | { |
5aea3dcd | 3392 | struct ceph_osd_client *osdc = osd->o_osdc; |
fe5da05e ID |
3393 | struct ceph_osd_request *req; |
3394 | struct MOSDOpReply m; | |
3395 | u64 tid = le64_to_cpu(msg->hdr.tid); | |
3396 | u32 data_len = 0; | |
fe5da05e ID |
3397 | int ret; |
3398 | int i; | |
3399 | ||
3400 | dout("%s msg %p tid %llu\n", __func__, msg, tid); | |
3401 | ||
5aea3dcd ID |
3402 | down_read(&osdc->lock); |
3403 | if (!osd_registered(osd)) { | |
3404 | dout("%s osd%d unknown\n", __func__, osd->o_osd); | |
3405 | goto out_unlock_osdc; | |
3406 | } | |
3407 | WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); | |
3408 | ||
3409 | mutex_lock(&osd->lock); | |
3410 | req = lookup_request(&osd->o_requests, tid); | |
fe5da05e | 3411 | if (!req) { |
5aea3dcd ID |
3412 | dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); |
3413 | goto out_unlock_session; | |
fe5da05e | 3414 | } |
fe5da05e | 3415 | |
cd08e0a2 | 3416 | m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns; |
fe5da05e | 3417 | ret = decode_MOSDOpReply(msg, &m); |
cd08e0a2 | 3418 | m.redirect.oloc.pool_ns = NULL; |
fe5da05e ID |
3419 | if (ret) { |
3420 | pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", | |
3421 | req->r_tid, ret); | |
3422 | ceph_msg_dump(msg); | |
3423 | goto fail_request; | |
3424 | } | |
3425 | dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", | |
3426 | __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, | |
3427 | m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), | |
3428 | le64_to_cpu(m.replay_version.version), m.user_version); | |
3429 | ||
3430 | if (m.retry_attempt >= 0) { | |
3431 | if (m.retry_attempt != req->r_attempts - 1) { | |
3432 | dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", | |
3433 | req, req->r_tid, m.retry_attempt, | |
3434 | req->r_attempts - 1); | |
5aea3dcd | 3435 | goto out_unlock_session; |
fe5da05e ID |
3436 | } |
3437 | } else { | |
3438 | WARN_ON(1); /* MOSDOpReply v4 is assumed */ | |
3439 | } | |
3440 | ||
3441 | if (!ceph_oloc_empty(&m.redirect.oloc)) { | |
3442 | dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, | |
3443 | m.redirect.oloc.pool); | |
5aea3dcd ID |
3444 | unlink_request(osd, req); |
3445 | mutex_unlock(&osd->lock); | |
205ee118 | 3446 | |
30c156d9 YZ |
3447 | /* |
3448 | * Not ceph_oloc_copy() - changing pool_ns is not | |
3449 | * supported. | |
3450 | */ | |
3451 | req->r_t.target_oloc.pool = m.redirect.oloc.pool; | |
5aea3dcd ID |
3452 | req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; |
3453 | req->r_tid = 0; | |
3454 | __submit_request(req, false); | |
3455 | goto out_unlock_osdc; | |
205ee118 ID |
3456 | } |
3457 | ||
fe5da05e ID |
3458 | if (m.num_ops != req->r_num_ops) { |
3459 | pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, | |
3460 | req->r_num_ops, req->r_tid); | |
3461 | goto fail_request; | |
f24e9980 | 3462 | } |
fe5da05e ID |
3463 | for (i = 0; i < req->r_num_ops; i++) { |
3464 | dout(" req %p tid %llu op %d rval %d len %u\n", req, | |
3465 | req->r_tid, i, m.rval[i], m.outdata_len[i]); | |
3466 | req->r_ops[i].rval = m.rval[i]; | |
3467 | req->r_ops[i].outdata_len = m.outdata_len[i]; | |
3468 | data_len += m.outdata_len[i]; | |
3469 | } | |
3470 | if (data_len != le32_to_cpu(msg->hdr.data_len)) { | |
3471 | pr_err("sum of lens %u != %u for tid %llu\n", data_len, | |
3472 | le32_to_cpu(msg->hdr.data_len), req->r_tid); | |
3473 | goto fail_request; | |
3474 | } | |
b18b9550 ID |
3475 | dout("%s req %p tid %llu result %d data_len %u\n", __func__, |
3476 | req, req->r_tid, m.result, data_len); | |
f24e9980 | 3477 | |
b18b9550 ID |
3478 | /* |
3479 | * Since we only ever request ONDISK, we should only ever get | |
3480 | * one (type of) reply back. | |
3481 | */ | |
3482 | WARN_ON(!(m.flags & CEPH_OSD_FLAG_ONDISK)); | |
3483 | req->r_result = m.result ?: data_len; | |
3484 | finish_request(req); | |
5aea3dcd ID |
3485 | mutex_unlock(&osd->lock); |
3486 | up_read(&osdc->lock); | |
f24e9980 | 3487 | |
b18b9550 ID |
3488 | __complete_request(req); |
3489 | complete_all(&req->r_completion); | |
3490 | ceph_osdc_put_request(req); | |
f24e9980 SW |
3491 | return; |
3492 | ||
fe5da05e | 3493 | fail_request: |
4609245e | 3494 | complete_request(req, -EIO); |
5aea3dcd ID |
3495 | out_unlock_session: |
3496 | mutex_unlock(&osd->lock); | |
3497 | out_unlock_osdc: | |
3498 | up_read(&osdc->lock); | |
f24e9980 SW |
3499 | } |
3500 | ||
42c1b124 ID |
3501 | static void set_pool_was_full(struct ceph_osd_client *osdc) |
3502 | { | |
3503 | struct rb_node *n; | |
3504 | ||
3505 | for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { | |
3506 | struct ceph_pg_pool_info *pi = | |
3507 | rb_entry(n, struct ceph_pg_pool_info, node); | |
3508 | ||
3509 | pi->was_full = __pool_full(pi); | |
3510 | } | |
3511 | } | |
3512 | ||
5aea3dcd | 3513 | static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) |
f24e9980 | 3514 | { |
5aea3dcd | 3515 | struct ceph_pg_pool_info *pi; |
f24e9980 | 3516 | |
5aea3dcd ID |
3517 | pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); |
3518 | if (!pi) | |
3519 | return false; | |
f24e9980 | 3520 | |
5aea3dcd | 3521 | return pi->was_full && !__pool_full(pi); |
422d2cb8 YS |
3522 | } |
3523 | ||
922dab61 ID |
3524 | static enum calc_target_result |
3525 | recalc_linger_target(struct ceph_osd_linger_request *lreq) | |
3526 | { | |
3527 | struct ceph_osd_client *osdc = lreq->osdc; | |
3528 | enum calc_target_result ct_res; | |
3529 | ||
7de030d6 | 3530 | ct_res = calc_target(osdc, &lreq->t, NULL, true); |
922dab61 ID |
3531 | if (ct_res == CALC_TARGET_NEED_RESEND) { |
3532 | struct ceph_osd *osd; | |
3533 | ||
3534 | osd = lookup_create_osd(osdc, lreq->t.osd, true); | |
3535 | if (osd != lreq->osd) { | |
3536 | unlink_linger(lreq->osd, lreq); | |
3537 | link_linger(osd, lreq); | |
3538 | } | |
3539 | } | |
3540 | ||
3541 | return ct_res; | |
3542 | } | |
3543 | ||
422d2cb8 | 3544 | /* |
5aea3dcd | 3545 | * Requeue requests whose mapping to an OSD has changed. |
422d2cb8 | 3546 | */ |
5aea3dcd ID |
3547 | static void scan_requests(struct ceph_osd *osd, |
3548 | bool force_resend, | |
3549 | bool cleared_full, | |
3550 | bool check_pool_cleared_full, | |
3551 | struct rb_root *need_resend, | |
3552 | struct list_head *need_resend_linger) | |
422d2cb8 | 3553 | { |
5aea3dcd ID |
3554 | struct ceph_osd_client *osdc = osd->o_osdc; |
3555 | struct rb_node *n; | |
3556 | bool force_resend_writes; | |
3557 | ||
922dab61 ID |
3558 | for (n = rb_first(&osd->o_linger_requests); n; ) { |
3559 | struct ceph_osd_linger_request *lreq = | |
3560 | rb_entry(n, struct ceph_osd_linger_request, node); | |
3561 | enum calc_target_result ct_res; | |
3562 | ||
3563 | n = rb_next(n); /* recalc_linger_target() */ | |
3564 | ||
3565 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, | |
3566 | lreq->linger_id); | |
3567 | ct_res = recalc_linger_target(lreq); | |
3568 | switch (ct_res) { | |
3569 | case CALC_TARGET_NO_ACTION: | |
3570 | force_resend_writes = cleared_full || | |
3571 | (check_pool_cleared_full && | |
3572 | pool_cleared_full(osdc, lreq->t.base_oloc.pool)); | |
3573 | if (!force_resend && !force_resend_writes) | |
3574 | break; | |
3575 | ||
3576 | /* fall through */ | |
3577 | case CALC_TARGET_NEED_RESEND: | |
4609245e | 3578 | cancel_linger_map_check(lreq); |
922dab61 ID |
3579 | /* |
3580 | * scan_requests() for the previous epoch(s) | |
3581 | * may have already added it to the list, since | |
3582 | * it's not unlinked here. | |
3583 | */ | |
3584 | if (list_empty(&lreq->scan_item)) | |
3585 | list_add_tail(&lreq->scan_item, need_resend_linger); | |
3586 | break; | |
3587 | case CALC_TARGET_POOL_DNE: | |
a10bcb19 | 3588 | list_del_init(&lreq->scan_item); |
4609245e | 3589 | check_linger_pool_dne(lreq); |
922dab61 ID |
3590 | break; |
3591 | } | |
3592 | } | |
3593 | ||
5aea3dcd ID |
3594 | for (n = rb_first(&osd->o_requests); n; ) { |
3595 | struct ceph_osd_request *req = | |
3596 | rb_entry(n, struct ceph_osd_request, r_node); | |
3597 | enum calc_target_result ct_res; | |
3598 | ||
4609245e | 3599 | n = rb_next(n); /* unlink_request(), check_pool_dne() */ |
5aea3dcd ID |
3600 | |
3601 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); | |
7de030d6 ID |
3602 | ct_res = calc_target(osdc, &req->r_t, &req->r_osd->o_con, |
3603 | false); | |
5aea3dcd ID |
3604 | switch (ct_res) { |
3605 | case CALC_TARGET_NO_ACTION: | |
3606 | force_resend_writes = cleared_full || | |
3607 | (check_pool_cleared_full && | |
3608 | pool_cleared_full(osdc, req->r_t.base_oloc.pool)); | |
3609 | if (!force_resend && | |
3610 | (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || | |
3611 | !force_resend_writes)) | |
3612 | break; | |
3613 | ||
3614 | /* fall through */ | |
3615 | case CALC_TARGET_NEED_RESEND: | |
4609245e | 3616 | cancel_map_check(req); |
5aea3dcd ID |
3617 | unlink_request(osd, req); |
3618 | insert_request(need_resend, req); | |
3619 | break; | |
3620 | case CALC_TARGET_POOL_DNE: | |
4609245e | 3621 | check_pool_dne(req); |
5aea3dcd | 3622 | break; |
b0494532 | 3623 | } |
6f6c7006 | 3624 | } |
422d2cb8 | 3625 | } |
6f6c7006 | 3626 | |
42c1b124 | 3627 | static int handle_one_map(struct ceph_osd_client *osdc, |
5aea3dcd ID |
3628 | void *p, void *end, bool incremental, |
3629 | struct rb_root *need_resend, | |
3630 | struct list_head *need_resend_linger) | |
42c1b124 ID |
3631 | { |
3632 | struct ceph_osdmap *newmap; | |
3633 | struct rb_node *n; | |
3634 | bool skipped_map = false; | |
3635 | bool was_full; | |
3636 | ||
b7ec35b3 | 3637 | was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); |
42c1b124 ID |
3638 | set_pool_was_full(osdc); |
3639 | ||
3640 | if (incremental) | |
3641 | newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); | |
3642 | else | |
3643 | newmap = ceph_osdmap_decode(&p, end); | |
3644 | if (IS_ERR(newmap)) | |
3645 | return PTR_ERR(newmap); | |
3646 | ||
3647 | if (newmap != osdc->osdmap) { | |
3648 | /* | |
3649 | * Preserve ->was_full before destroying the old map. | |
3650 | * For pools that weren't in the old map, ->was_full | |
3651 | * should be false. | |
3652 | */ | |
3653 | for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { | |
3654 | struct ceph_pg_pool_info *pi = | |
3655 | rb_entry(n, struct ceph_pg_pool_info, node); | |
3656 | struct ceph_pg_pool_info *old_pi; | |
3657 | ||
3658 | old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); | |
3659 | if (old_pi) | |
3660 | pi->was_full = old_pi->was_full; | |
3661 | else | |
3662 | WARN_ON(pi->was_full); | |
3663 | } | |
3664 | ||
3665 | if (osdc->osdmap->epoch && | |
3666 | osdc->osdmap->epoch + 1 < newmap->epoch) { | |
3667 | WARN_ON(incremental); | |
3668 | skipped_map = true; | |
3669 | } | |
3670 | ||
3671 | ceph_osdmap_destroy(osdc->osdmap); | |
3672 | osdc->osdmap = newmap; | |
3673 | } | |
3674 | ||
b7ec35b3 | 3675 | was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); |
5aea3dcd ID |
3676 | scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, |
3677 | need_resend, need_resend_linger); | |
3678 | ||
3679 | for (n = rb_first(&osdc->osds); n; ) { | |
3680 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
3681 | ||
3682 | n = rb_next(n); /* close_osd() */ | |
3683 | ||
3684 | scan_requests(osd, skipped_map, was_full, true, need_resend, | |
3685 | need_resend_linger); | |
3686 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
3687 | memcmp(&osd->o_con.peer_addr, | |
3688 | ceph_osd_addr(osdc->osdmap, osd->o_osd), | |
3689 | sizeof(struct ceph_entity_addr))) | |
3690 | close_osd(osd); | |
3691 | } | |
42c1b124 ID |
3692 | |
3693 | return 0; | |
3694 | } | |
6f6c7006 | 3695 | |
5aea3dcd ID |
3696 | static void kick_requests(struct ceph_osd_client *osdc, |
3697 | struct rb_root *need_resend, | |
3698 | struct list_head *need_resend_linger) | |
3699 | { | |
922dab61 | 3700 | struct ceph_osd_linger_request *lreq, *nlreq; |
04c7d789 | 3701 | enum calc_target_result ct_res; |
5aea3dcd ID |
3702 | struct rb_node *n; |
3703 | ||
04c7d789 ID |
3704 | /* make sure need_resend targets reflect latest map */ |
3705 | for (n = rb_first(need_resend); n; ) { | |
3706 | struct ceph_osd_request *req = | |
3707 | rb_entry(n, struct ceph_osd_request, r_node); | |
3708 | ||
3709 | n = rb_next(n); | |
3710 | ||
3711 | if (req->r_t.epoch < osdc->osdmap->epoch) { | |
3712 | ct_res = calc_target(osdc, &req->r_t, NULL, false); | |
3713 | if (ct_res == CALC_TARGET_POOL_DNE) { | |
3714 | erase_request(need_resend, req); | |
3715 | check_pool_dne(req); | |
3716 | } | |
3717 | } | |
3718 | } | |
3719 | ||
5aea3dcd ID |
3720 | for (n = rb_first(need_resend); n; ) { |
3721 | struct ceph_osd_request *req = | |
3722 | rb_entry(n, struct ceph_osd_request, r_node); | |
3723 | struct ceph_osd *osd; | |
3724 | ||
3725 | n = rb_next(n); | |
3726 | erase_request(need_resend, req); /* before link_request() */ | |
3727 | ||
5aea3dcd ID |
3728 | osd = lookup_create_osd(osdc, req->r_t.osd, true); |
3729 | link_request(osd, req); | |
3730 | if (!req->r_linger) { | |
3731 | if (!osd_homeless(osd) && !req->r_t.paused) | |
3732 | send_request(req); | |
922dab61 ID |
3733 | } else { |
3734 | cancel_linger_request(req); | |
5aea3dcd ID |
3735 | } |
3736 | } | |
922dab61 ID |
3737 | |
3738 | list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { | |
3739 | if (!osd_homeless(lreq->osd)) | |
3740 | send_linger(lreq); | |
3741 | ||
3742 | list_del_init(&lreq->scan_item); | |
3743 | } | |
5aea3dcd ID |
3744 | } |
3745 | ||
f24e9980 SW |
3746 | /* |
3747 | * Process updated osd map. | |
3748 | * | |
3749 | * The message contains any number of incremental and full maps, normally | |
3750 | * indicating some sort of topology change in the cluster. Kick requests | |
3751 | * off to different OSDs as needed. | |
3752 | */ | |
3753 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
3754 | { | |
42c1b124 ID |
3755 | void *p = msg->front.iov_base; |
3756 | void *const end = p + msg->front.iov_len; | |
f24e9980 SW |
3757 | u32 nr_maps, maplen; |
3758 | u32 epoch; | |
f24e9980 | 3759 | struct ceph_fsid fsid; |
5aea3dcd ID |
3760 | struct rb_root need_resend = RB_ROOT; |
3761 | LIST_HEAD(need_resend_linger); | |
42c1b124 ID |
3762 | bool handled_incremental = false; |
3763 | bool was_pauserd, was_pausewr; | |
3764 | bool pauserd, pausewr; | |
3765 | int err; | |
f24e9980 | 3766 | |
42c1b124 | 3767 | dout("%s have %u\n", __func__, osdc->osdmap->epoch); |
5aea3dcd | 3768 | down_write(&osdc->lock); |
f24e9980 SW |
3769 | |
3770 | /* verify fsid */ | |
3771 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
3772 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d | 3773 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
42c1b124 | 3774 | goto bad; |
f24e9980 | 3775 | |
b7ec35b3 ID |
3776 | was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); |
3777 | was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || | |
3778 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || | |
42c1b124 | 3779 | have_pool_full(osdc); |
9a1ea2db | 3780 | |
f24e9980 SW |
3781 | /* incremental maps */ |
3782 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
3783 | dout(" %d inc maps\n", nr_maps); | |
3784 | while (nr_maps > 0) { | |
3785 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
3786 | epoch = ceph_decode_32(&p); |
3787 | maplen = ceph_decode_32(&p); | |
f24e9980 | 3788 | ceph_decode_need(&p, end, maplen, bad); |
42c1b124 ID |
3789 | if (osdc->osdmap->epoch && |
3790 | osdc->osdmap->epoch + 1 == epoch) { | |
f24e9980 SW |
3791 | dout("applying incremental map %u len %d\n", |
3792 | epoch, maplen); | |
5aea3dcd ID |
3793 | err = handle_one_map(osdc, p, p + maplen, true, |
3794 | &need_resend, &need_resend_linger); | |
42c1b124 | 3795 | if (err) |
f24e9980 | 3796 | goto bad; |
42c1b124 | 3797 | handled_incremental = true; |
f24e9980 SW |
3798 | } else { |
3799 | dout("ignoring incremental map %u len %d\n", | |
3800 | epoch, maplen); | |
3801 | } | |
42c1b124 | 3802 | p += maplen; |
f24e9980 SW |
3803 | nr_maps--; |
3804 | } | |
42c1b124 | 3805 | if (handled_incremental) |
f24e9980 SW |
3806 | goto done; |
3807 | ||
3808 | /* full maps */ | |
3809 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
3810 | dout(" %d full maps\n", nr_maps); | |
3811 | while (nr_maps) { | |
3812 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
3813 | epoch = ceph_decode_32(&p); |
3814 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
3815 | ceph_decode_need(&p, end, maplen, bad); |
3816 | if (nr_maps > 1) { | |
3817 | dout("skipping non-latest full map %u len %d\n", | |
3818 | epoch, maplen); | |
e5253a7b | 3819 | } else if (osdc->osdmap->epoch >= epoch) { |
f24e9980 SW |
3820 | dout("skipping full map %u len %d, " |
3821 | "older than our %u\n", epoch, maplen, | |
3822 | osdc->osdmap->epoch); | |
3823 | } else { | |
3824 | dout("taking full map %u len %d\n", epoch, maplen); | |
5aea3dcd ID |
3825 | err = handle_one_map(osdc, p, p + maplen, false, |
3826 | &need_resend, &need_resend_linger); | |
42c1b124 | 3827 | if (err) |
f24e9980 | 3828 | goto bad; |
f24e9980 SW |
3829 | } |
3830 | p += maplen; | |
3831 | nr_maps--; | |
3832 | } | |
3833 | ||
3834 | done: | |
cd634fb6 SW |
3835 | /* |
3836 | * subscribe to subsequent osdmap updates if full to ensure | |
3837 | * we find out when we are no longer full and stop returning | |
3838 | * ENOSPC. | |
3839 | */ | |
b7ec35b3 ID |
3840 | pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); |
3841 | pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || | |
3842 | ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || | |
42c1b124 | 3843 | have_pool_full(osdc); |
58eb7932 JL |
3844 | if (was_pauserd || was_pausewr || pauserd || pausewr || |
3845 | osdc->osdmap->epoch < osdc->epoch_barrier) | |
42c1b124 | 3846 | maybe_request_map(osdc); |
cd634fb6 | 3847 | |
5aea3dcd | 3848 | kick_requests(osdc, &need_resend, &need_resend_linger); |
42c1b124 | 3849 | |
fc36d0a4 | 3850 | ceph_osdc_abort_on_full(osdc); |
42c1b124 ID |
3851 | ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, |
3852 | osdc->osdmap->epoch); | |
5aea3dcd | 3853 | up_write(&osdc->lock); |
03066f23 | 3854 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
3855 | return; |
3856 | ||
3857 | bad: | |
3858 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 3859 | ceph_msg_dump(msg); |
5aea3dcd ID |
3860 | up_write(&osdc->lock); |
3861 | } | |
3862 | ||
3863 | /* | |
3864 | * Resubmit requests pending on the given osd. | |
3865 | */ | |
3866 | static void kick_osd_requests(struct ceph_osd *osd) | |
3867 | { | |
3868 | struct rb_node *n; | |
3869 | ||
a02a946d ID |
3870 | clear_backoffs(osd); |
3871 | ||
922dab61 | 3872 | for (n = rb_first(&osd->o_requests); n; ) { |
5aea3dcd ID |
3873 | struct ceph_osd_request *req = |
3874 | rb_entry(n, struct ceph_osd_request, r_node); | |
3875 | ||
922dab61 ID |
3876 | n = rb_next(n); /* cancel_linger_request() */ |
3877 | ||
5aea3dcd ID |
3878 | if (!req->r_linger) { |
3879 | if (!req->r_t.paused) | |
3880 | send_request(req); | |
922dab61 ID |
3881 | } else { |
3882 | cancel_linger_request(req); | |
5aea3dcd ID |
3883 | } |
3884 | } | |
922dab61 ID |
3885 | for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { |
3886 | struct ceph_osd_linger_request *lreq = | |
3887 | rb_entry(n, struct ceph_osd_linger_request, node); | |
3888 | ||
3889 | send_linger(lreq); | |
3890 | } | |
5aea3dcd ID |
3891 | } |
3892 | ||
3893 | /* | |
3894 | * If the osd connection drops, we need to resubmit all requests. | |
3895 | */ | |
3896 | static void osd_fault(struct ceph_connection *con) | |
3897 | { | |
3898 | struct ceph_osd *osd = con->private; | |
3899 | struct ceph_osd_client *osdc = osd->o_osdc; | |
3900 | ||
3901 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
3902 | ||
3903 | down_write(&osdc->lock); | |
3904 | if (!osd_registered(osd)) { | |
3905 | dout("%s osd%d unknown\n", __func__, osd->o_osd); | |
3906 | goto out_unlock; | |
3907 | } | |
3908 | ||
3909 | if (!reopen_osd(osd)) | |
3910 | kick_osd_requests(osd); | |
3911 | maybe_request_map(osdc); | |
3912 | ||
3913 | out_unlock: | |
3914 | up_write(&osdc->lock); | |
f24e9980 SW |
3915 | } |
3916 | ||
a02a946d ID |
3917 | struct MOSDBackoff { |
3918 | struct ceph_spg spgid; | |
3919 | u32 map_epoch; | |
3920 | u8 op; | |
3921 | u64 id; | |
3922 | struct ceph_hobject_id *begin; | |
3923 | struct ceph_hobject_id *end; | |
3924 | }; | |
3925 | ||
3926 | static int decode_MOSDBackoff(const struct ceph_msg *msg, struct MOSDBackoff *m) | |
3927 | { | |
3928 | void *p = msg->front.iov_base; | |
3929 | void *const end = p + msg->front.iov_len; | |
3930 | u8 struct_v; | |
3931 | u32 struct_len; | |
3932 | int ret; | |
3933 | ||
3934 | ret = ceph_start_decoding(&p, end, 1, "spg_t", &struct_v, &struct_len); | |
3935 | if (ret) | |
3936 | return ret; | |
3937 | ||
3938 | ret = ceph_decode_pgid(&p, end, &m->spgid.pgid); | |
3939 | if (ret) | |
3940 | return ret; | |
3941 | ||
3942 | ceph_decode_8_safe(&p, end, m->spgid.shard, e_inval); | |
3943 | ceph_decode_32_safe(&p, end, m->map_epoch, e_inval); | |
3944 | ceph_decode_8_safe(&p, end, m->op, e_inval); | |
3945 | ceph_decode_64_safe(&p, end, m->id, e_inval); | |
3946 | ||
3947 | m->begin = kzalloc(sizeof(*m->begin), GFP_NOIO); | |
3948 | if (!m->begin) | |
3949 | return -ENOMEM; | |
3950 | ||
3951 | ret = decode_hoid(&p, end, m->begin); | |
3952 | if (ret) { | |
3953 | free_hoid(m->begin); | |
3954 | return ret; | |
3955 | } | |
3956 | ||
3957 | m->end = kzalloc(sizeof(*m->end), GFP_NOIO); | |
3958 | if (!m->end) { | |
3959 | free_hoid(m->begin); | |
3960 | return -ENOMEM; | |
3961 | } | |
3962 | ||
3963 | ret = decode_hoid(&p, end, m->end); | |
3964 | if (ret) { | |
3965 | free_hoid(m->begin); | |
3966 | free_hoid(m->end); | |
3967 | return ret; | |
3968 | } | |
3969 | ||
3970 | return 0; | |
3971 | ||
3972 | e_inval: | |
3973 | return -EINVAL; | |
3974 | } | |
3975 | ||
3976 | static struct ceph_msg *create_backoff_message( | |
3977 | const struct ceph_osd_backoff *backoff, | |
3978 | u32 map_epoch) | |
3979 | { | |
3980 | struct ceph_msg *msg; | |
3981 | void *p, *end; | |
3982 | int msg_size; | |
3983 | ||
3984 | msg_size = CEPH_ENCODING_START_BLK_LEN + | |
3985 | CEPH_PGID_ENCODING_LEN + 1; /* spgid */ | |
3986 | msg_size += 4 + 1 + 8; /* map_epoch, op, id */ | |
3987 | msg_size += CEPH_ENCODING_START_BLK_LEN + | |
3988 | hoid_encoding_size(backoff->begin); | |
3989 | msg_size += CEPH_ENCODING_START_BLK_LEN + | |
3990 | hoid_encoding_size(backoff->end); | |
3991 | ||
3992 | msg = ceph_msg_new(CEPH_MSG_OSD_BACKOFF, msg_size, GFP_NOIO, true); | |
3993 | if (!msg) | |
3994 | return NULL; | |
3995 | ||
3996 | p = msg->front.iov_base; | |
3997 | end = p + msg->front_alloc_len; | |
3998 | ||
3999 | encode_spgid(&p, &backoff->spgid); | |
4000 | ceph_encode_32(&p, map_epoch); | |
4001 | ceph_encode_8(&p, CEPH_OSD_BACKOFF_OP_ACK_BLOCK); | |
4002 | ceph_encode_64(&p, backoff->id); | |
4003 | encode_hoid(&p, end, backoff->begin); | |
4004 | encode_hoid(&p, end, backoff->end); | |
4005 | BUG_ON(p != end); | |
4006 | ||
4007 | msg->front.iov_len = p - msg->front.iov_base; | |
4008 | msg->hdr.version = cpu_to_le16(1); /* MOSDBackoff v1 */ | |
4009 | msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); | |
4010 | ||
4011 | return msg; | |
4012 | } | |
4013 | ||
4014 | static void handle_backoff_block(struct ceph_osd *osd, struct MOSDBackoff *m) | |
4015 | { | |
4016 | struct ceph_spg_mapping *spg; | |
4017 | struct ceph_osd_backoff *backoff; | |
4018 | struct ceph_msg *msg; | |
4019 | ||
4020 | dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, | |
4021 | m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); | |
4022 | ||
4023 | spg = lookup_spg_mapping(&osd->o_backoff_mappings, &m->spgid); | |
4024 | if (!spg) { | |
4025 | spg = alloc_spg_mapping(); | |
4026 | if (!spg) { | |
4027 | pr_err("%s failed to allocate spg\n", __func__); | |
4028 | return; | |
4029 | } | |
4030 | spg->spgid = m->spgid; /* struct */ | |
4031 | insert_spg_mapping(&osd->o_backoff_mappings, spg); | |
4032 | } | |
4033 | ||
4034 | backoff = alloc_backoff(); | |
4035 | if (!backoff) { | |
4036 | pr_err("%s failed to allocate backoff\n", __func__); | |
4037 | return; | |
4038 | } | |
4039 | backoff->spgid = m->spgid; /* struct */ | |
4040 | backoff->id = m->id; | |
4041 | backoff->begin = m->begin; | |
4042 | m->begin = NULL; /* backoff now owns this */ | |
4043 | backoff->end = m->end; | |
4044 | m->end = NULL; /* ditto */ | |
4045 | ||
4046 | insert_backoff(&spg->backoffs, backoff); | |
4047 | insert_backoff_by_id(&osd->o_backoffs_by_id, backoff); | |
4048 | ||
4049 | /* | |
4050 | * Ack with original backoff's epoch so that the OSD can | |
4051 | * discard this if there was a PG split. | |
4052 | */ | |
4053 | msg = create_backoff_message(backoff, m->map_epoch); | |
4054 | if (!msg) { | |
4055 | pr_err("%s failed to allocate msg\n", __func__); | |
4056 | return; | |
4057 | } | |
4058 | ceph_con_send(&osd->o_con, msg); | |
4059 | } | |
4060 | ||
4061 | static bool target_contained_by(const struct ceph_osd_request_target *t, | |
4062 | const struct ceph_hobject_id *begin, | |
4063 | const struct ceph_hobject_id *end) | |
4064 | { | |
4065 | struct ceph_hobject_id hoid; | |
4066 | int cmp; | |
4067 | ||
4068 | hoid_fill_from_target(&hoid, t); | |
4069 | cmp = hoid_compare(&hoid, begin); | |
4070 | return !cmp || (cmp > 0 && hoid_compare(&hoid, end) < 0); | |
4071 | } | |
4072 | ||
4073 | static void handle_backoff_unblock(struct ceph_osd *osd, | |
4074 | const struct MOSDBackoff *m) | |
4075 | { | |
4076 | struct ceph_spg_mapping *spg; | |
4077 | struct ceph_osd_backoff *backoff; | |
4078 | struct rb_node *n; | |
4079 | ||
4080 | dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, | |
4081 | m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); | |
4082 | ||
4083 | backoff = lookup_backoff_by_id(&osd->o_backoffs_by_id, m->id); | |
4084 | if (!backoff) { | |
4085 | pr_err("%s osd%d spgid %llu.%xs%d id %llu backoff dne\n", | |
4086 | __func__, osd->o_osd, m->spgid.pgid.pool, | |
4087 | m->spgid.pgid.seed, m->spgid.shard, m->id); | |
4088 | return; | |
4089 | } | |
4090 | ||
4091 | if (hoid_compare(backoff->begin, m->begin) && | |
4092 | hoid_compare(backoff->end, m->end)) { | |
4093 | pr_err("%s osd%d spgid %llu.%xs%d id %llu bad range?\n", | |
4094 | __func__, osd->o_osd, m->spgid.pgid.pool, | |
4095 | m->spgid.pgid.seed, m->spgid.shard, m->id); | |
4096 | /* unblock it anyway... */ | |
4097 | } | |
4098 | ||
4099 | spg = lookup_spg_mapping(&osd->o_backoff_mappings, &backoff->spgid); | |
4100 | BUG_ON(!spg); | |
4101 | ||
4102 | erase_backoff(&spg->backoffs, backoff); | |
4103 | erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); | |
4104 | free_backoff(backoff); | |
4105 | ||
4106 | if (RB_EMPTY_ROOT(&spg->backoffs)) { | |
4107 | erase_spg_mapping(&osd->o_backoff_mappings, spg); | |
4108 | free_spg_mapping(spg); | |
4109 | } | |
4110 | ||
4111 | for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { | |
4112 | struct ceph_osd_request *req = | |
4113 | rb_entry(n, struct ceph_osd_request, r_node); | |
4114 | ||
4115 | if (!ceph_spg_compare(&req->r_t.spgid, &m->spgid)) { | |
4116 | /* | |
4117 | * Match against @m, not @backoff -- the PG may | |
4118 | * have split on the OSD. | |
4119 | */ | |
4120 | if (target_contained_by(&req->r_t, m->begin, m->end)) { | |
4121 | /* | |
4122 | * If no other installed backoff applies, | |
4123 | * resend. | |
4124 | */ | |
4125 | send_request(req); | |
4126 | } | |
4127 | } | |
4128 | } | |
4129 | } | |
4130 | ||
4131 | static void handle_backoff(struct ceph_osd *osd, struct ceph_msg *msg) | |
4132 | { | |
4133 | struct ceph_osd_client *osdc = osd->o_osdc; | |
4134 | struct MOSDBackoff m; | |
4135 | int ret; | |
4136 | ||
4137 | down_read(&osdc->lock); | |
4138 | if (!osd_registered(osd)) { | |
4139 | dout("%s osd%d unknown\n", __func__, osd->o_osd); | |
4140 | up_read(&osdc->lock); | |
4141 | return; | |
4142 | } | |
4143 | WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); | |
4144 | ||
4145 | mutex_lock(&osd->lock); | |
4146 | ret = decode_MOSDBackoff(msg, &m); | |
4147 | if (ret) { | |
4148 | pr_err("failed to decode MOSDBackoff: %d\n", ret); | |
4149 | ceph_msg_dump(msg); | |
4150 | goto out_unlock; | |
4151 | } | |
4152 | ||
4153 | switch (m.op) { | |
4154 | case CEPH_OSD_BACKOFF_OP_BLOCK: | |
4155 | handle_backoff_block(osd, &m); | |
4156 | break; | |
4157 | case CEPH_OSD_BACKOFF_OP_UNBLOCK: | |
4158 | handle_backoff_unblock(osd, &m); | |
4159 | break; | |
4160 | default: | |
4161 | pr_err("%s osd%d unknown op %d\n", __func__, osd->o_osd, m.op); | |
4162 | } | |
4163 | ||
4164 | free_hoid(m.begin); | |
4165 | free_hoid(m.end); | |
4166 | ||
4167 | out_unlock: | |
4168 | mutex_unlock(&osd->lock); | |
4169 | up_read(&osdc->lock); | |
4170 | } | |
4171 | ||
a40c4f10 YS |
4172 | /* |
4173 | * Process osd watch notifications | |
4174 | */ | |
3c663bbd AE |
4175 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
4176 | struct ceph_msg *msg) | |
a40c4f10 | 4177 | { |
922dab61 ID |
4178 | void *p = msg->front.iov_base; |
4179 | void *const end = p + msg->front.iov_len; | |
4180 | struct ceph_osd_linger_request *lreq; | |
4181 | struct linger_work *lwork; | |
4182 | u8 proto_ver, opcode; | |
4183 | u64 cookie, notify_id; | |
4184 | u64 notifier_id = 0; | |
19079203 | 4185 | s32 return_code = 0; |
922dab61 ID |
4186 | void *payload = NULL; |
4187 | u32 payload_len = 0; | |
a40c4f10 YS |
4188 | |
4189 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
4190 | ceph_decode_8_safe(&p, end, opcode, bad); | |
4191 | ceph_decode_64_safe(&p, end, cookie, bad); | |
922dab61 | 4192 | p += 8; /* skip ver */ |
a40c4f10 YS |
4193 | ceph_decode_64_safe(&p, end, notify_id, bad); |
4194 | ||
922dab61 ID |
4195 | if (proto_ver >= 1) { |
4196 | ceph_decode_32_safe(&p, end, payload_len, bad); | |
4197 | ceph_decode_need(&p, end, payload_len, bad); | |
4198 | payload = p; | |
4199 | p += payload_len; | |
4200 | } | |
4201 | ||
4202 | if (le16_to_cpu(msg->hdr.version) >= 2) | |
19079203 | 4203 | ceph_decode_32_safe(&p, end, return_code, bad); |
922dab61 ID |
4204 | |
4205 | if (le16_to_cpu(msg->hdr.version) >= 3) | |
4206 | ceph_decode_64_safe(&p, end, notifier_id, bad); | |
4207 | ||
4208 | down_read(&osdc->lock); | |
4209 | lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); | |
4210 | if (!lreq) { | |
4211 | dout("%s opcode %d cookie %llu dne\n", __func__, opcode, | |
4212 | cookie); | |
4213 | goto out_unlock_osdc; | |
4214 | } | |
4215 | ||
4216 | mutex_lock(&lreq->lock); | |
19079203 ID |
4217 | dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, |
4218 | opcode, cookie, lreq, lreq->is_watch); | |
922dab61 ID |
4219 | if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { |
4220 | if (!lreq->last_error) { | |
4221 | lreq->last_error = -ENOTCONN; | |
4222 | queue_watch_error(lreq); | |
4223 | } | |
19079203 ID |
4224 | } else if (!lreq->is_watch) { |
4225 | /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ | |
4226 | if (lreq->notify_id && lreq->notify_id != notify_id) { | |
4227 | dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, | |
4228 | lreq->notify_id, notify_id); | |
4229 | } else if (!completion_done(&lreq->notify_finish_wait)) { | |
4230 | struct ceph_msg_data *data = | |
4231 | list_first_entry_or_null(&msg->data, | |
4232 | struct ceph_msg_data, | |
4233 | links); | |
4234 | ||
4235 | if (data) { | |
4236 | if (lreq->preply_pages) { | |
4237 | WARN_ON(data->type != | |
4238 | CEPH_MSG_DATA_PAGES); | |
4239 | *lreq->preply_pages = data->pages; | |
4240 | *lreq->preply_len = data->length; | |
4241 | } else { | |
4242 | ceph_release_page_vector(data->pages, | |
4243 | calc_pages_for(0, data->length)); | |
4244 | } | |
4245 | } | |
4246 | lreq->notify_finish_error = return_code; | |
4247 | complete_all(&lreq->notify_finish_wait); | |
4248 | } | |
922dab61 ID |
4249 | } else { |
4250 | /* CEPH_WATCH_EVENT_NOTIFY */ | |
4251 | lwork = lwork_alloc(lreq, do_watch_notify); | |
4252 | if (!lwork) { | |
4253 | pr_err("failed to allocate notify-lwork\n"); | |
4254 | goto out_unlock_lreq; | |
a40c4f10 | 4255 | } |
a40c4f10 | 4256 | |
922dab61 ID |
4257 | lwork->notify.notify_id = notify_id; |
4258 | lwork->notify.notifier_id = notifier_id; | |
4259 | lwork->notify.payload = payload; | |
4260 | lwork->notify.payload_len = payload_len; | |
4261 | lwork->notify.msg = ceph_msg_get(msg); | |
4262 | lwork_queue(lwork); | |
91883cd2 | 4263 | } |
a40c4f10 | 4264 | |
922dab61 ID |
4265 | out_unlock_lreq: |
4266 | mutex_unlock(&lreq->lock); | |
4267 | out_unlock_osdc: | |
4268 | up_read(&osdc->lock); | |
a40c4f10 YS |
4269 | return; |
4270 | ||
4271 | bad: | |
4272 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
a40c4f10 YS |
4273 | } |
4274 | ||
70636773 AE |
4275 | /* |
4276 | * Register request, send initial attempt. | |
4277 | */ | |
4278 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
4279 | struct ceph_osd_request *req, | |
4280 | bool nofail) | |
4281 | { | |
5aea3dcd ID |
4282 | down_read(&osdc->lock); |
4283 | submit_request(req, false); | |
4284 | up_read(&osdc->lock); | |
0bbfdfe8 | 4285 | |
5aea3dcd | 4286 | return 0; |
f24e9980 | 4287 | } |
3d14c5d2 | 4288 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 | 4289 | |
c9f9b93d | 4290 | /* |
c297eb42 ID |
4291 | * Unregister a registered request. The request is not completed: |
4292 | * ->r_result isn't set and __complete_request() isn't called. | |
c9f9b93d ID |
4293 | */ |
4294 | void ceph_osdc_cancel_request(struct ceph_osd_request *req) | |
4295 | { | |
4296 | struct ceph_osd_client *osdc = req->r_osdc; | |
4297 | ||
5aea3dcd | 4298 | down_write(&osdc->lock); |
5aea3dcd ID |
4299 | if (req->r_osd) |
4300 | cancel_request(req); | |
4301 | up_write(&osdc->lock); | |
c9f9b93d ID |
4302 | } |
4303 | EXPORT_SYMBOL(ceph_osdc_cancel_request); | |
4304 | ||
f24e9980 | 4305 | /* |
42b06965 | 4306 | * @timeout: in jiffies, 0 means "wait forever" |
f24e9980 | 4307 | */ |
42b06965 ID |
4308 | static int wait_request_timeout(struct ceph_osd_request *req, |
4309 | unsigned long timeout) | |
f24e9980 | 4310 | { |
42b06965 | 4311 | long left; |
c9f9b93d | 4312 | |
42b06965 | 4313 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); |
0e76abf2 | 4314 | left = wait_for_completion_killable_timeout(&req->r_completion, |
42b06965 ID |
4315 | ceph_timeout_jiffies(timeout)); |
4316 | if (left <= 0) { | |
4317 | left = left ?: -ETIMEDOUT; | |
c9f9b93d | 4318 | ceph_osdc_cancel_request(req); |
42b06965 ID |
4319 | } else { |
4320 | left = req->r_result; /* completed */ | |
f24e9980 SW |
4321 | } |
4322 | ||
42b06965 ID |
4323 | return left; |
4324 | } | |
4325 | ||
4326 | /* | |
4327 | * wait for a request to complete | |
4328 | */ | |
4329 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
4330 | struct ceph_osd_request *req) | |
4331 | { | |
4332 | return wait_request_timeout(req, 0); | |
f24e9980 | 4333 | } |
3d14c5d2 | 4334 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
4335 | |
4336 | /* | |
4337 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
4338 | */ | |
4339 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
4340 | { | |
5aea3dcd ID |
4341 | struct rb_node *n, *p; |
4342 | u64 last_tid = atomic64_read(&osdc->last_tid); | |
f24e9980 | 4343 | |
5aea3dcd ID |
4344 | again: |
4345 | down_read(&osdc->lock); | |
4346 | for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { | |
4347 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
4348 | ||
4349 | mutex_lock(&osd->lock); | |
4350 | for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { | |
4351 | struct ceph_osd_request *req = | |
4352 | rb_entry(p, struct ceph_osd_request, r_node); | |
4353 | ||
4354 | if (req->r_tid > last_tid) | |
4355 | break; | |
4356 | ||
4357 | if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) | |
4358 | continue; | |
f24e9980 | 4359 | |
5aea3dcd ID |
4360 | ceph_osdc_get_request(req); |
4361 | mutex_unlock(&osd->lock); | |
4362 | up_read(&osdc->lock); | |
4363 | dout("%s waiting on req %p tid %llu last_tid %llu\n", | |
4364 | __func__, req, req->r_tid, last_tid); | |
b18b9550 | 4365 | wait_for_completion(&req->r_completion); |
5aea3dcd ID |
4366 | ceph_osdc_put_request(req); |
4367 | goto again; | |
4368 | } | |
f24e9980 | 4369 | |
5aea3dcd | 4370 | mutex_unlock(&osd->lock); |
f24e9980 | 4371 | } |
5aea3dcd ID |
4372 | |
4373 | up_read(&osdc->lock); | |
4374 | dout("%s done last_tid %llu\n", __func__, last_tid); | |
f24e9980 | 4375 | } |
3d14c5d2 | 4376 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 | 4377 | |
922dab61 ID |
4378 | static struct ceph_osd_request * |
4379 | alloc_linger_request(struct ceph_osd_linger_request *lreq) | |
4380 | { | |
4381 | struct ceph_osd_request *req; | |
4382 | ||
4383 | req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); | |
4384 | if (!req) | |
4385 | return NULL; | |
4386 | ||
4387 | ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); | |
4388 | ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); | |
4389 | ||
4390 | if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { | |
4391 | ceph_osdc_put_request(req); | |
4392 | return NULL; | |
4393 | } | |
4394 | ||
4395 | return req; | |
4396 | } | |
4397 | ||
4398 | /* | |
4399 | * Returns a handle, caller owns a ref. | |
4400 | */ | |
4401 | struct ceph_osd_linger_request * | |
4402 | ceph_osdc_watch(struct ceph_osd_client *osdc, | |
4403 | struct ceph_object_id *oid, | |
4404 | struct ceph_object_locator *oloc, | |
4405 | rados_watchcb2_t wcb, | |
4406 | rados_watcherrcb_t errcb, | |
4407 | void *data) | |
4408 | { | |
4409 | struct ceph_osd_linger_request *lreq; | |
4410 | int ret; | |
4411 | ||
4412 | lreq = linger_alloc(osdc); | |
4413 | if (!lreq) | |
4414 | return ERR_PTR(-ENOMEM); | |
4415 | ||
19079203 | 4416 | lreq->is_watch = true; |
922dab61 ID |
4417 | lreq->wcb = wcb; |
4418 | lreq->errcb = errcb; | |
4419 | lreq->data = data; | |
b07d3c4b | 4420 | lreq->watch_valid_thru = jiffies; |
922dab61 ID |
4421 | |
4422 | ceph_oid_copy(&lreq->t.base_oid, oid); | |
4423 | ceph_oloc_copy(&lreq->t.base_oloc, oloc); | |
54ea0046 | 4424 | lreq->t.flags = CEPH_OSD_FLAG_WRITE; |
1134e091 | 4425 | ktime_get_real_ts(&lreq->mtime); |
922dab61 ID |
4426 | |
4427 | lreq->reg_req = alloc_linger_request(lreq); | |
4428 | if (!lreq->reg_req) { | |
4429 | ret = -ENOMEM; | |
4430 | goto err_put_lreq; | |
4431 | } | |
4432 | ||
4433 | lreq->ping_req = alloc_linger_request(lreq); | |
4434 | if (!lreq->ping_req) { | |
4435 | ret = -ENOMEM; | |
4436 | goto err_put_lreq; | |
4437 | } | |
4438 | ||
4439 | down_write(&osdc->lock); | |
4440 | linger_register(lreq); /* before osd_req_op_* */ | |
4441 | osd_req_op_watch_init(lreq->reg_req, 0, lreq->linger_id, | |
4442 | CEPH_OSD_WATCH_OP_WATCH); | |
4443 | osd_req_op_watch_init(lreq->ping_req, 0, lreq->linger_id, | |
4444 | CEPH_OSD_WATCH_OP_PING); | |
4445 | linger_submit(lreq); | |
4446 | up_write(&osdc->lock); | |
4447 | ||
4448 | ret = linger_reg_commit_wait(lreq); | |
4449 | if (ret) { | |
4450 | linger_cancel(lreq); | |
4451 | goto err_put_lreq; | |
4452 | } | |
4453 | ||
4454 | return lreq; | |
4455 | ||
4456 | err_put_lreq: | |
4457 | linger_put(lreq); | |
4458 | return ERR_PTR(ret); | |
4459 | } | |
4460 | EXPORT_SYMBOL(ceph_osdc_watch); | |
4461 | ||
4462 | /* | |
4463 | * Releases a ref. | |
4464 | * | |
4465 | * Times out after mount_timeout to preserve rbd unmap behaviour | |
4466 | * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap | |
4467 | * with mount_timeout"). | |
4468 | */ | |
4469 | int ceph_osdc_unwatch(struct ceph_osd_client *osdc, | |
4470 | struct ceph_osd_linger_request *lreq) | |
4471 | { | |
4472 | struct ceph_options *opts = osdc->client->options; | |
4473 | struct ceph_osd_request *req; | |
4474 | int ret; | |
4475 | ||
4476 | req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); | |
4477 | if (!req) | |
4478 | return -ENOMEM; | |
4479 | ||
4480 | ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); | |
4481 | ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); | |
54ea0046 | 4482 | req->r_flags = CEPH_OSD_FLAG_WRITE; |
1134e091 | 4483 | ktime_get_real_ts(&req->r_mtime); |
922dab61 ID |
4484 | osd_req_op_watch_init(req, 0, lreq->linger_id, |
4485 | CEPH_OSD_WATCH_OP_UNWATCH); | |
4486 | ||
4487 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); | |
4488 | if (ret) | |
4489 | goto out_put_req; | |
4490 | ||
4491 | ceph_osdc_start_request(osdc, req, false); | |
4492 | linger_cancel(lreq); | |
4493 | linger_put(lreq); | |
4494 | ret = wait_request_timeout(req, opts->mount_timeout); | |
4495 | ||
4496 | out_put_req: | |
4497 | ceph_osdc_put_request(req); | |
4498 | return ret; | |
4499 | } | |
4500 | EXPORT_SYMBOL(ceph_osdc_unwatch); | |
4501 | ||
4502 | static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, | |
4503 | u64 notify_id, u64 cookie, void *payload, | |
4504 | size_t payload_len) | |
4505 | { | |
4506 | struct ceph_osd_req_op *op; | |
4507 | struct ceph_pagelist *pl; | |
4508 | int ret; | |
4509 | ||
4510 | op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); | |
4511 | ||
4512 | pl = kmalloc(sizeof(*pl), GFP_NOIO); | |
4513 | if (!pl) | |
4514 | return -ENOMEM; | |
4515 | ||
4516 | ceph_pagelist_init(pl); | |
4517 | ret = ceph_pagelist_encode_64(pl, notify_id); | |
4518 | ret |= ceph_pagelist_encode_64(pl, cookie); | |
4519 | if (payload) { | |
4520 | ret |= ceph_pagelist_encode_32(pl, payload_len); | |
4521 | ret |= ceph_pagelist_append(pl, payload, payload_len); | |
4522 | } else { | |
4523 | ret |= ceph_pagelist_encode_32(pl, 0); | |
4524 | } | |
4525 | if (ret) { | |
4526 | ceph_pagelist_release(pl); | |
4527 | return -ENOMEM; | |
4528 | } | |
4529 | ||
4530 | ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); | |
4531 | op->indata_len = pl->length; | |
4532 | return 0; | |
4533 | } | |
4534 | ||
4535 | int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, | |
4536 | struct ceph_object_id *oid, | |
4537 | struct ceph_object_locator *oloc, | |
4538 | u64 notify_id, | |
4539 | u64 cookie, | |
4540 | void *payload, | |
4541 | size_t payload_len) | |
4542 | { | |
4543 | struct ceph_osd_request *req; | |
4544 | int ret; | |
4545 | ||
4546 | req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); | |
4547 | if (!req) | |
4548 | return -ENOMEM; | |
4549 | ||
4550 | ceph_oid_copy(&req->r_base_oid, oid); | |
4551 | ceph_oloc_copy(&req->r_base_oloc, oloc); | |
4552 | req->r_flags = CEPH_OSD_FLAG_READ; | |
4553 | ||
4554 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); | |
4555 | if (ret) | |
4556 | goto out_put_req; | |
4557 | ||
4558 | ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, | |
4559 | payload_len); | |
4560 | if (ret) | |
4561 | goto out_put_req; | |
4562 | ||
4563 | ceph_osdc_start_request(osdc, req, false); | |
4564 | ret = ceph_osdc_wait_request(osdc, req); | |
4565 | ||
4566 | out_put_req: | |
4567 | ceph_osdc_put_request(req); | |
4568 | return ret; | |
4569 | } | |
4570 | EXPORT_SYMBOL(ceph_osdc_notify_ack); | |
4571 | ||
19079203 ID |
4572 | static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, |
4573 | u64 cookie, u32 prot_ver, u32 timeout, | |
4574 | void *payload, size_t payload_len) | |
4575 | { | |
4576 | struct ceph_osd_req_op *op; | |
4577 | struct ceph_pagelist *pl; | |
4578 | int ret; | |
4579 | ||
4580 | op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); | |
4581 | op->notify.cookie = cookie; | |
4582 | ||
4583 | pl = kmalloc(sizeof(*pl), GFP_NOIO); | |
4584 | if (!pl) | |
4585 | return -ENOMEM; | |
4586 | ||
4587 | ceph_pagelist_init(pl); | |
4588 | ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ | |
4589 | ret |= ceph_pagelist_encode_32(pl, timeout); | |
4590 | ret |= ceph_pagelist_encode_32(pl, payload_len); | |
4591 | ret |= ceph_pagelist_append(pl, payload, payload_len); | |
4592 | if (ret) { | |
4593 | ceph_pagelist_release(pl); | |
4594 | return -ENOMEM; | |
4595 | } | |
4596 | ||
4597 | ceph_osd_data_pagelist_init(&op->notify.request_data, pl); | |
4598 | op->indata_len = pl->length; | |
4599 | return 0; | |
4600 | } | |
4601 | ||
4602 | /* | |
4603 | * @timeout: in seconds | |
4604 | * | |
4605 | * @preply_{pages,len} are initialized both on success and error. | |
4606 | * The caller is responsible for: | |
4607 | * | |
4608 | * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) | |
4609 | */ | |
4610 | int ceph_osdc_notify(struct ceph_osd_client *osdc, | |
4611 | struct ceph_object_id *oid, | |
4612 | struct ceph_object_locator *oloc, | |
4613 | void *payload, | |
4614 | size_t payload_len, | |
4615 | u32 timeout, | |
4616 | struct page ***preply_pages, | |
4617 | size_t *preply_len) | |
4618 | { | |
4619 | struct ceph_osd_linger_request *lreq; | |
4620 | struct page **pages; | |
4621 | int ret; | |
4622 | ||
4623 | WARN_ON(!timeout); | |
4624 | if (preply_pages) { | |
4625 | *preply_pages = NULL; | |
4626 | *preply_len = 0; | |
4627 | } | |
4628 | ||
4629 | lreq = linger_alloc(osdc); | |
4630 | if (!lreq) | |
4631 | return -ENOMEM; | |
4632 | ||
4633 | lreq->preply_pages = preply_pages; | |
4634 | lreq->preply_len = preply_len; | |
4635 | ||
4636 | ceph_oid_copy(&lreq->t.base_oid, oid); | |
4637 | ceph_oloc_copy(&lreq->t.base_oloc, oloc); | |
4638 | lreq->t.flags = CEPH_OSD_FLAG_READ; | |
4639 | ||
4640 | lreq->reg_req = alloc_linger_request(lreq); | |
4641 | if (!lreq->reg_req) { | |
4642 | ret = -ENOMEM; | |
4643 | goto out_put_lreq; | |
4644 | } | |
4645 | ||
4646 | /* for notify_id */ | |
4647 | pages = ceph_alloc_page_vector(1, GFP_NOIO); | |
4648 | if (IS_ERR(pages)) { | |
4649 | ret = PTR_ERR(pages); | |
4650 | goto out_put_lreq; | |
4651 | } | |
4652 | ||
4653 | down_write(&osdc->lock); | |
4654 | linger_register(lreq); /* before osd_req_op_* */ | |
4655 | ret = osd_req_op_notify_init(lreq->reg_req, 0, lreq->linger_id, 1, | |
4656 | timeout, payload, payload_len); | |
4657 | if (ret) { | |
4658 | linger_unregister(lreq); | |
4659 | up_write(&osdc->lock); | |
4660 | ceph_release_page_vector(pages, 1); | |
4661 | goto out_put_lreq; | |
4662 | } | |
4663 | ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, | |
4664 | response_data), | |
4665 | pages, PAGE_SIZE, 0, false, true); | |
4666 | linger_submit(lreq); | |
4667 | up_write(&osdc->lock); | |
4668 | ||
4669 | ret = linger_reg_commit_wait(lreq); | |
4670 | if (!ret) | |
4671 | ret = linger_notify_finish_wait(lreq); | |
4672 | else | |
4673 | dout("lreq %p failed to initiate notify %d\n", lreq, ret); | |
4674 | ||
4675 | linger_cancel(lreq); | |
4676 | out_put_lreq: | |
4677 | linger_put(lreq); | |
4678 | return ret; | |
4679 | } | |
4680 | EXPORT_SYMBOL(ceph_osdc_notify); | |
4681 | ||
b07d3c4b ID |
4682 | /* |
4683 | * Return the number of milliseconds since the watch was last | |
4684 | * confirmed, or an error. If there is an error, the watch is no | |
4685 | * longer valid, and should be destroyed with ceph_osdc_unwatch(). | |
4686 | */ | |
4687 | int ceph_osdc_watch_check(struct ceph_osd_client *osdc, | |
4688 | struct ceph_osd_linger_request *lreq) | |
4689 | { | |
4690 | unsigned long stamp, age; | |
4691 | int ret; | |
4692 | ||
4693 | down_read(&osdc->lock); | |
4694 | mutex_lock(&lreq->lock); | |
4695 | stamp = lreq->watch_valid_thru; | |
4696 | if (!list_empty(&lreq->pending_lworks)) { | |
4697 | struct linger_work *lwork = | |
4698 | list_first_entry(&lreq->pending_lworks, | |
4699 | struct linger_work, | |
4700 | pending_item); | |
4701 | ||
4702 | if (time_before(lwork->queued_stamp, stamp)) | |
4703 | stamp = lwork->queued_stamp; | |
4704 | } | |
4705 | age = jiffies - stamp; | |
4706 | dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, | |
4707 | lreq, lreq->linger_id, age, lreq->last_error); | |
4708 | /* we are truncating to msecs, so return a safe upper bound */ | |
4709 | ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); | |
4710 | ||
4711 | mutex_unlock(&lreq->lock); | |
4712 | up_read(&osdc->lock); | |
4713 | return ret; | |
4714 | } | |
4715 | ||
a4ed38d7 DF |
4716 | static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) |
4717 | { | |
4718 | u8 struct_v; | |
4719 | u32 struct_len; | |
4720 | int ret; | |
4721 | ||
4722 | ret = ceph_start_decoding(p, end, 2, "watch_item_t", | |
4723 | &struct_v, &struct_len); | |
4724 | if (ret) | |
4725 | return ret; | |
4726 | ||
4727 | ceph_decode_copy(p, &item->name, sizeof(item->name)); | |
4728 | item->cookie = ceph_decode_64(p); | |
4729 | *p += 4; /* skip timeout_seconds */ | |
4730 | if (struct_v >= 2) { | |
4731 | ceph_decode_copy(p, &item->addr, sizeof(item->addr)); | |
4732 | ceph_decode_addr(&item->addr); | |
4733 | } | |
4734 | ||
4735 | dout("%s %s%llu cookie %llu addr %s\n", __func__, | |
4736 | ENTITY_NAME(item->name), item->cookie, | |
4737 | ceph_pr_addr(&item->addr.in_addr)); | |
4738 | return 0; | |
4739 | } | |
4740 | ||
4741 | static int decode_watchers(void **p, void *end, | |
4742 | struct ceph_watch_item **watchers, | |
4743 | u32 *num_watchers) | |
4744 | { | |
4745 | u8 struct_v; | |
4746 | u32 struct_len; | |
4747 | int i; | |
4748 | int ret; | |
4749 | ||
4750 | ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t", | |
4751 | &struct_v, &struct_len); | |
4752 | if (ret) | |
4753 | return ret; | |
4754 | ||
4755 | *num_watchers = ceph_decode_32(p); | |
4756 | *watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO); | |
4757 | if (!*watchers) | |
4758 | return -ENOMEM; | |
4759 | ||
4760 | for (i = 0; i < *num_watchers; i++) { | |
4761 | ret = decode_watcher(p, end, *watchers + i); | |
4762 | if (ret) { | |
4763 | kfree(*watchers); | |
4764 | return ret; | |
4765 | } | |
4766 | } | |
4767 | ||
4768 | return 0; | |
4769 | } | |
4770 | ||
4771 | /* | |
4772 | * On success, the caller is responsible for: | |
4773 | * | |
4774 | * kfree(watchers); | |
4775 | */ | |
4776 | int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, | |
4777 | struct ceph_object_id *oid, | |
4778 | struct ceph_object_locator *oloc, | |
4779 | struct ceph_watch_item **watchers, | |
4780 | u32 *num_watchers) | |
4781 | { | |
4782 | struct ceph_osd_request *req; | |
4783 | struct page **pages; | |
4784 | int ret; | |
4785 | ||
4786 | req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); | |
4787 | if (!req) | |
4788 | return -ENOMEM; | |
4789 | ||
4790 | ceph_oid_copy(&req->r_base_oid, oid); | |
4791 | ceph_oloc_copy(&req->r_base_oloc, oloc); | |
4792 | req->r_flags = CEPH_OSD_FLAG_READ; | |
4793 | ||
4794 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); | |
4795 | if (ret) | |
4796 | goto out_put_req; | |
4797 | ||
4798 | pages = ceph_alloc_page_vector(1, GFP_NOIO); | |
4799 | if (IS_ERR(pages)) { | |
4800 | ret = PTR_ERR(pages); | |
4801 | goto out_put_req; | |
4802 | } | |
4803 | ||
4804 | osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0); | |
4805 | ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers, | |
4806 | response_data), | |
4807 | pages, PAGE_SIZE, 0, false, true); | |
4808 | ||
4809 | ceph_osdc_start_request(osdc, req, false); | |
4810 | ret = ceph_osdc_wait_request(osdc, req); | |
4811 | if (ret >= 0) { | |
4812 | void *p = page_address(pages[0]); | |
4813 | void *const end = p + req->r_ops[0].outdata_len; | |
4814 | ||
4815 | ret = decode_watchers(&p, end, watchers, num_watchers); | |
4816 | } | |
4817 | ||
4818 | out_put_req: | |
4819 | ceph_osdc_put_request(req); | |
4820 | return ret; | |
4821 | } | |
4822 | EXPORT_SYMBOL(ceph_osdc_list_watchers); | |
4823 | ||
dd935f44 JD |
4824 | /* |
4825 | * Call all pending notify callbacks - for use after a watch is | |
4826 | * unregistered, to make sure no more callbacks for it will be invoked | |
4827 | */ | |
f6479449 | 4828 | void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) |
dd935f44 | 4829 | { |
99d16943 | 4830 | dout("%s osdc %p\n", __func__, osdc); |
dd935f44 JD |
4831 | flush_workqueue(osdc->notify_wq); |
4832 | } | |
4833 | EXPORT_SYMBOL(ceph_osdc_flush_notifies); | |
4834 | ||
7cca78c9 ID |
4835 | void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) |
4836 | { | |
4837 | down_read(&osdc->lock); | |
4838 | maybe_request_map(osdc); | |
4839 | up_read(&osdc->lock); | |
4840 | } | |
4841 | EXPORT_SYMBOL(ceph_osdc_maybe_request_map); | |
dd935f44 | 4842 | |
428a7158 DF |
4843 | /* |
4844 | * Execute an OSD class method on an object. | |
4845 | * | |
4846 | * @flags: CEPH_OSD_FLAG_* | |
2544a020 | 4847 | * @resp_len: in/out param for reply length |
428a7158 DF |
4848 | */ |
4849 | int ceph_osdc_call(struct ceph_osd_client *osdc, | |
4850 | struct ceph_object_id *oid, | |
4851 | struct ceph_object_locator *oloc, | |
4852 | const char *class, const char *method, | |
4853 | unsigned int flags, | |
4854 | struct page *req_page, size_t req_len, | |
4855 | struct page *resp_page, size_t *resp_len) | |
4856 | { | |
4857 | struct ceph_osd_request *req; | |
4858 | int ret; | |
4859 | ||
2544a020 ID |
4860 | if (req_len > PAGE_SIZE || (resp_page && *resp_len > PAGE_SIZE)) |
4861 | return -E2BIG; | |
4862 | ||
428a7158 DF |
4863 | req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); |
4864 | if (!req) | |
4865 | return -ENOMEM; | |
4866 | ||
4867 | ceph_oid_copy(&req->r_base_oid, oid); | |
4868 | ceph_oloc_copy(&req->r_base_oloc, oloc); | |
4869 | req->r_flags = flags; | |
4870 | ||
4871 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); | |
4872 | if (ret) | |
4873 | goto out_put_req; | |
4874 | ||
4875 | osd_req_op_cls_init(req, 0, CEPH_OSD_OP_CALL, class, method); | |
4876 | if (req_page) | |
4877 | osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len, | |
4878 | 0, false, false); | |
4879 | if (resp_page) | |
4880 | osd_req_op_cls_response_data_pages(req, 0, &resp_page, | |
2544a020 | 4881 | *resp_len, 0, false, false); |
428a7158 DF |
4882 | |
4883 | ceph_osdc_start_request(osdc, req, false); | |
4884 | ret = ceph_osdc_wait_request(osdc, req); | |
4885 | if (ret >= 0) { | |
4886 | ret = req->r_ops[0].rval; | |
4887 | if (resp_page) | |
4888 | *resp_len = req->r_ops[0].outdata_len; | |
4889 | } | |
4890 | ||
4891 | out_put_req: | |
4892 | ceph_osdc_put_request(req); | |
4893 | return ret; | |
4894 | } | |
4895 | EXPORT_SYMBOL(ceph_osdc_call); | |
4896 | ||
f24e9980 SW |
4897 | /* |
4898 | * init, shutdown | |
4899 | */ | |
4900 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
4901 | { | |
4902 | int err; | |
4903 | ||
4904 | dout("init\n"); | |
4905 | osdc->client = client; | |
5aea3dcd | 4906 | init_rwsem(&osdc->lock); |
f24e9980 | 4907 | osdc->osds = RB_ROOT; |
f5a2041b | 4908 | INIT_LIST_HEAD(&osdc->osd_lru); |
9dd2845c | 4909 | spin_lock_init(&osdc->osd_lru_lock); |
5aea3dcd ID |
4910 | osd_init(&osdc->homeless_osd); |
4911 | osdc->homeless_osd.o_osdc = osdc; | |
4912 | osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; | |
264048af | 4913 | osdc->last_linger_id = CEPH_LINGER_ID_START; |
922dab61 | 4914 | osdc->linger_requests = RB_ROOT; |
4609245e ID |
4915 | osdc->map_checks = RB_ROOT; |
4916 | osdc->linger_map_checks = RB_ROOT; | |
f24e9980 | 4917 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); |
f5a2041b YS |
4918 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
4919 | ||
5f44f142 | 4920 | err = -ENOMEM; |
e5253a7b ID |
4921 | osdc->osdmap = ceph_osdmap_alloc(); |
4922 | if (!osdc->osdmap) | |
4923 | goto out; | |
4924 | ||
9e767adb ID |
4925 | osdc->req_mempool = mempool_create_slab_pool(10, |
4926 | ceph_osd_request_cache); | |
f24e9980 | 4927 | if (!osdc->req_mempool) |
e5253a7b | 4928 | goto out_map; |
f24e9980 | 4929 | |
d50b409f | 4930 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
711da55d | 4931 | PAGE_SIZE, 10, true, "osd_op"); |
f24e9980 | 4932 | if (err < 0) |
5f44f142 | 4933 | goto out_mempool; |
d50b409f | 4934 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
711da55d | 4935 | PAGE_SIZE, 10, true, "osd_op_reply"); |
c16e7869 SW |
4936 | if (err < 0) |
4937 | goto out_msgpool; | |
a40c4f10 | 4938 | |
dbcae088 | 4939 | err = -ENOMEM; |
a40c4f10 | 4940 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); |
dbcae088 | 4941 | if (!osdc->notify_wq) |
c172ec5c ID |
4942 | goto out_msgpool_reply; |
4943 | ||
fbca9635 ID |
4944 | schedule_delayed_work(&osdc->timeout_work, |
4945 | osdc->client->options->osd_keepalive_timeout); | |
b37ee1b9 ID |
4946 | schedule_delayed_work(&osdc->osds_timeout_work, |
4947 | round_jiffies_relative(osdc->client->options->osd_idle_ttl)); | |
4948 | ||
f24e9980 | 4949 | return 0; |
5f44f142 | 4950 | |
c172ec5c ID |
4951 | out_msgpool_reply: |
4952 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); | |
c16e7869 SW |
4953 | out_msgpool: |
4954 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
4955 | out_mempool: |
4956 | mempool_destroy(osdc->req_mempool); | |
e5253a7b ID |
4957 | out_map: |
4958 | ceph_osdmap_destroy(osdc->osdmap); | |
5f44f142 SW |
4959 | out: |
4960 | return err; | |
f24e9980 SW |
4961 | } |
4962 | ||
4963 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
4964 | { | |
a40c4f10 YS |
4965 | flush_workqueue(osdc->notify_wq); |
4966 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 4967 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 4968 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
42a2c09f | 4969 | |
5aea3dcd | 4970 | down_write(&osdc->lock); |
42a2c09f ID |
4971 | while (!RB_EMPTY_ROOT(&osdc->osds)) { |
4972 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
4973 | struct ceph_osd, o_node); | |
5aea3dcd | 4974 | close_osd(osd); |
42a2c09f | 4975 | } |
5aea3dcd | 4976 | up_write(&osdc->lock); |
02113a0f | 4977 | WARN_ON(refcount_read(&osdc->homeless_osd.o_ref) != 1); |
5aea3dcd ID |
4978 | osd_cleanup(&osdc->homeless_osd); |
4979 | ||
4980 | WARN_ON(!list_empty(&osdc->osd_lru)); | |
922dab61 | 4981 | WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); |
4609245e ID |
4982 | WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); |
4983 | WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); | |
5aea3dcd ID |
4984 | WARN_ON(atomic_read(&osdc->num_requests)); |
4985 | WARN_ON(atomic_read(&osdc->num_homeless)); | |
42a2c09f | 4986 | |
e5253a7b | 4987 | ceph_osdmap_destroy(osdc->osdmap); |
f24e9980 SW |
4988 | mempool_destroy(osdc->req_mempool); |
4989 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 4990 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
4991 | } |
4992 | ||
4993 | /* | |
4994 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
4995 | * *plen. Return number of bytes read, or error. | |
4996 | */ | |
4997 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
4998 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
4999 | u64 off, u64 *plen, | |
5000 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 5001 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
5002 | { |
5003 | struct ceph_osd_request *req; | |
5004 | int rc = 0; | |
5005 | ||
5006 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
5007 | vino.snap, off, *plen); | |
715e4cd4 | 5008 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, |
f24e9980 | 5009 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, |
acead002 | 5010 | NULL, truncate_seq, truncate_size, |
153e5167 | 5011 | false); |
6816282d SW |
5012 | if (IS_ERR(req)) |
5013 | return PTR_ERR(req); | |
f24e9980 SW |
5014 | |
5015 | /* it may be a short read due to an object boundary */ | |
406e2c9f | 5016 | osd_req_op_extent_osd_data_pages(req, 0, |
a4ce40a9 | 5017 | pages, *plen, page_align, false, false); |
f24e9980 | 5018 | |
e0c59487 | 5019 | dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", |
43bfe5de | 5020 | off, *plen, *plen, page_align); |
f24e9980 SW |
5021 | |
5022 | rc = ceph_osdc_start_request(osdc, req, false); | |
5023 | if (!rc) | |
5024 | rc = ceph_osdc_wait_request(osdc, req); | |
5025 | ||
5026 | ceph_osdc_put_request(req); | |
5027 | dout("readpages result %d\n", rc); | |
5028 | return rc; | |
5029 | } | |
3d14c5d2 | 5030 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
5031 | |
5032 | /* | |
5033 | * do a synchronous write on N pages | |
5034 | */ | |
5035 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
5036 | struct ceph_file_layout *layout, | |
5037 | struct ceph_snap_context *snapc, | |
5038 | u64 off, u64 len, | |
5039 | u32 truncate_seq, u64 truncate_size, | |
5040 | struct timespec *mtime, | |
24808826 | 5041 | struct page **pages, int num_pages) |
f24e9980 SW |
5042 | { |
5043 | struct ceph_osd_request *req; | |
5044 | int rc = 0; | |
b7495fc2 | 5045 | int page_align = off & ~PAGE_MASK; |
f24e9980 | 5046 | |
715e4cd4 | 5047 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, |
54ea0046 | 5048 | CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE, |
acead002 | 5049 | snapc, truncate_seq, truncate_size, |
153e5167 | 5050 | true); |
6816282d SW |
5051 | if (IS_ERR(req)) |
5052 | return PTR_ERR(req); | |
f24e9980 SW |
5053 | |
5054 | /* it may be a short write due to an object boundary */ | |
406e2c9f | 5055 | osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, |
43bfe5de AE |
5056 | false, false); |
5057 | dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); | |
f24e9980 | 5058 | |
bb873b53 | 5059 | req->r_mtime = *mtime; |
87f979d3 | 5060 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
5061 | if (!rc) |
5062 | rc = ceph_osdc_wait_request(osdc, req); | |
5063 | ||
5064 | ceph_osdc_put_request(req); | |
5065 | if (rc == 0) | |
5066 | rc = len; | |
5067 | dout("writepages result %d\n", rc); | |
5068 | return rc; | |
5069 | } | |
3d14c5d2 | 5070 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 | 5071 | |
5522ae0b AE |
5072 | int ceph_osdc_setup(void) |
5073 | { | |
3f1af42a ID |
5074 | size_t size = sizeof(struct ceph_osd_request) + |
5075 | CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); | |
5076 | ||
5522ae0b | 5077 | BUG_ON(ceph_osd_request_cache); |
3f1af42a ID |
5078 | ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, |
5079 | 0, 0, NULL); | |
5522ae0b AE |
5080 | |
5081 | return ceph_osd_request_cache ? 0 : -ENOMEM; | |
5082 | } | |
5083 | EXPORT_SYMBOL(ceph_osdc_setup); | |
5084 | ||
5085 | void ceph_osdc_cleanup(void) | |
5086 | { | |
5087 | BUG_ON(!ceph_osd_request_cache); | |
5088 | kmem_cache_destroy(ceph_osd_request_cache); | |
5089 | ceph_osd_request_cache = NULL; | |
5090 | } | |
5091 | EXPORT_SYMBOL(ceph_osdc_cleanup); | |
5092 | ||
f24e9980 SW |
5093 | /* |
5094 | * handle incoming message | |
5095 | */ | |
5096 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
5097 | { | |
5098 | struct ceph_osd *osd = con->private; | |
5aea3dcd | 5099 | struct ceph_osd_client *osdc = osd->o_osdc; |
f24e9980 SW |
5100 | int type = le16_to_cpu(msg->hdr.type); |
5101 | ||
f24e9980 SW |
5102 | switch (type) { |
5103 | case CEPH_MSG_OSD_MAP: | |
5104 | ceph_osdc_handle_map(osdc, msg); | |
5105 | break; | |
5106 | case CEPH_MSG_OSD_OPREPLY: | |
5aea3dcd | 5107 | handle_reply(osd, msg); |
f24e9980 | 5108 | break; |
a02a946d ID |
5109 | case CEPH_MSG_OSD_BACKOFF: |
5110 | handle_backoff(osd, msg); | |
5111 | break; | |
a40c4f10 YS |
5112 | case CEPH_MSG_WATCH_NOTIFY: |
5113 | handle_watch_notify(osdc, msg); | |
5114 | break; | |
f24e9980 SW |
5115 | |
5116 | default: | |
5117 | pr_err("received unknown message type %d %s\n", type, | |
5118 | ceph_msg_type_name(type)); | |
5119 | } | |
5aea3dcd | 5120 | |
f24e9980 SW |
5121 | ceph_msg_put(msg); |
5122 | } | |
5123 | ||
5b3a4db3 | 5124 | /* |
d15f9d69 ID |
5125 | * Lookup and return message for incoming reply. Don't try to do |
5126 | * anything about a larger than preallocated data portion of the | |
5127 | * message at the moment - for now, just skip the message. | |
5b3a4db3 SW |
5128 | */ |
5129 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
5130 | struct ceph_msg_header *hdr, |
5131 | int *skip) | |
f24e9980 SW |
5132 | { |
5133 | struct ceph_osd *osd = con->private; | |
5134 | struct ceph_osd_client *osdc = osd->o_osdc; | |
5aea3dcd | 5135 | struct ceph_msg *m = NULL; |
0547a9b3 | 5136 | struct ceph_osd_request *req; |
3f0a4ac5 | 5137 | int front_len = le32_to_cpu(hdr->front_len); |
5b3a4db3 | 5138 | int data_len = le32_to_cpu(hdr->data_len); |
5aea3dcd | 5139 | u64 tid = le64_to_cpu(hdr->tid); |
f24e9980 | 5140 | |
5aea3dcd ID |
5141 | down_read(&osdc->lock); |
5142 | if (!osd_registered(osd)) { | |
5143 | dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); | |
5144 | *skip = 1; | |
5145 | goto out_unlock_osdc; | |
5146 | } | |
5147 | WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); | |
5148 | ||
5149 | mutex_lock(&osd->lock); | |
5150 | req = lookup_request(&osd->o_requests, tid); | |
0547a9b3 | 5151 | if (!req) { |
cd8140c6 ID |
5152 | dout("%s osd%d tid %llu unknown, skipping\n", __func__, |
5153 | osd->o_osd, tid); | |
d15f9d69 | 5154 | *skip = 1; |
5aea3dcd | 5155 | goto out_unlock_session; |
0547a9b3 | 5156 | } |
c16e7869 | 5157 | |
ace6d3a9 | 5158 | ceph_msg_revoke_incoming(req->r_reply); |
0547a9b3 | 5159 | |
f2be82b0 | 5160 | if (front_len > req->r_reply->front_alloc_len) { |
d15f9d69 ID |
5161 | pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", |
5162 | __func__, osd->o_osd, req->r_tid, front_len, | |
5163 | req->r_reply->front_alloc_len); | |
3f0a4ac5 ID |
5164 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, |
5165 | false); | |
a79832f2 | 5166 | if (!m) |
5aea3dcd | 5167 | goto out_unlock_session; |
c16e7869 SW |
5168 | ceph_msg_put(req->r_reply); |
5169 | req->r_reply = m; | |
5170 | } | |
0fff87ec | 5171 | |
d15f9d69 ID |
5172 | if (data_len > req->r_reply->data_length) { |
5173 | pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", | |
5174 | __func__, osd->o_osd, req->r_tid, data_len, | |
5175 | req->r_reply->data_length); | |
5176 | m = NULL; | |
5177 | *skip = 1; | |
5aea3dcd | 5178 | goto out_unlock_session; |
0547a9b3 | 5179 | } |
d15f9d69 ID |
5180 | |
5181 | m = ceph_msg_get(req->r_reply); | |
c16e7869 | 5182 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 | 5183 | |
5aea3dcd ID |
5184 | out_unlock_session: |
5185 | mutex_unlock(&osd->lock); | |
5186 | out_unlock_osdc: | |
5187 | up_read(&osdc->lock); | |
2450418c | 5188 | return m; |
5b3a4db3 SW |
5189 | } |
5190 | ||
19079203 ID |
5191 | /* |
5192 | * TODO: switch to a msg-owned pagelist | |
5193 | */ | |
5194 | static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) | |
5195 | { | |
5196 | struct ceph_msg *m; | |
5197 | int type = le16_to_cpu(hdr->type); | |
5198 | u32 front_len = le32_to_cpu(hdr->front_len); | |
5199 | u32 data_len = le32_to_cpu(hdr->data_len); | |
5200 | ||
5201 | m = ceph_msg_new(type, front_len, GFP_NOIO, false); | |
5202 | if (!m) | |
5203 | return NULL; | |
5204 | ||
5205 | if (data_len) { | |
5206 | struct page **pages; | |
5207 | struct ceph_osd_data osd_data; | |
5208 | ||
5209 | pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), | |
5210 | GFP_NOIO); | |
c22e853a | 5211 | if (IS_ERR(pages)) { |
19079203 ID |
5212 | ceph_msg_put(m); |
5213 | return NULL; | |
5214 | } | |
5215 | ||
5216 | ceph_osd_data_pages_init(&osd_data, pages, data_len, 0, false, | |
5217 | false); | |
5218 | ceph_osdc_msg_data_add(m, &osd_data); | |
5219 | } | |
5220 | ||
5221 | return m; | |
5222 | } | |
5223 | ||
5b3a4db3 SW |
5224 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, |
5225 | struct ceph_msg_header *hdr, | |
5226 | int *skip) | |
5227 | { | |
5228 | struct ceph_osd *osd = con->private; | |
5229 | int type = le16_to_cpu(hdr->type); | |
5b3a4db3 | 5230 | |
1c20f2d2 | 5231 | *skip = 0; |
5b3a4db3 SW |
5232 | switch (type) { |
5233 | case CEPH_MSG_OSD_MAP: | |
a02a946d | 5234 | case CEPH_MSG_OSD_BACKOFF: |
a40c4f10 | 5235 | case CEPH_MSG_WATCH_NOTIFY: |
19079203 | 5236 | return alloc_msg_with_page_vector(hdr); |
5b3a4db3 SW |
5237 | case CEPH_MSG_OSD_OPREPLY: |
5238 | return get_reply(con, hdr, skip); | |
5239 | default: | |
5aea3dcd ID |
5240 | pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, |
5241 | osd->o_osd, type); | |
5b3a4db3 SW |
5242 | *skip = 1; |
5243 | return NULL; | |
5244 | } | |
f24e9980 SW |
5245 | } |
5246 | ||
5247 | /* | |
5248 | * Wrappers to refcount containing ceph_osd struct | |
5249 | */ | |
5250 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
5251 | { | |
5252 | struct ceph_osd *osd = con->private; | |
5253 | if (get_osd(osd)) | |
5254 | return con; | |
5255 | return NULL; | |
5256 | } | |
5257 | ||
5258 | static void put_osd_con(struct ceph_connection *con) | |
5259 | { | |
5260 | struct ceph_osd *osd = con->private; | |
5261 | put_osd(osd); | |
5262 | } | |
5263 | ||
4e7a5dcd SW |
5264 | /* |
5265 | * authentication | |
5266 | */ | |
a3530df3 AE |
5267 | /* |
5268 | * Note: returned pointer is the address of a structure that's | |
5269 | * managed separately. Caller must *not* attempt to free it. | |
5270 | */ | |
5271 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 5272 | int *proto, int force_new) |
4e7a5dcd SW |
5273 | { |
5274 | struct ceph_osd *o = con->private; | |
5275 | struct ceph_osd_client *osdc = o->o_osdc; | |
5276 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 5277 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 5278 | |
74f1869f | 5279 | if (force_new && auth->authorizer) { |
6c1ea260 | 5280 | ceph_auth_destroy_authorizer(auth->authorizer); |
74f1869f AE |
5281 | auth->authorizer = NULL; |
5282 | } | |
27859f97 SW |
5283 | if (!auth->authorizer) { |
5284 | int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
5285 | auth); | |
4e7a5dcd | 5286 | if (ret) |
a3530df3 | 5287 | return ERR_PTR(ret); |
27859f97 SW |
5288 | } else { |
5289 | int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
0bed9b5c SW |
5290 | auth); |
5291 | if (ret) | |
5292 | return ERR_PTR(ret); | |
4e7a5dcd | 5293 | } |
4e7a5dcd | 5294 | *proto = ac->protocol; |
74f1869f | 5295 | |
a3530df3 | 5296 | return auth; |
4e7a5dcd SW |
5297 | } |
5298 | ||
5299 | ||
0dde5848 | 5300 | static int verify_authorizer_reply(struct ceph_connection *con) |
4e7a5dcd SW |
5301 | { |
5302 | struct ceph_osd *o = con->private; | |
5303 | struct ceph_osd_client *osdc = o->o_osdc; | |
5304 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
5305 | ||
0dde5848 | 5306 | return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer); |
4e7a5dcd SW |
5307 | } |
5308 | ||
9bd2e6f8 SW |
5309 | static int invalidate_authorizer(struct ceph_connection *con) |
5310 | { | |
5311 | struct ceph_osd *o = con->private; | |
5312 | struct ceph_osd_client *osdc = o->o_osdc; | |
5313 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
5314 | ||
27859f97 | 5315 | ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
9bd2e6f8 SW |
5316 | return ceph_monc_validate_auth(&osdc->client->monc); |
5317 | } | |
4e7a5dcd | 5318 | |
8cb441c0 ID |
5319 | static void osd_reencode_message(struct ceph_msg *msg) |
5320 | { | |
914902af ID |
5321 | int type = le16_to_cpu(msg->hdr.type); |
5322 | ||
5323 | if (type == CEPH_MSG_OSD_OP) | |
5324 | encode_request_finish(msg); | |
8cb441c0 ID |
5325 | } |
5326 | ||
79dbd1ba | 5327 | static int osd_sign_message(struct ceph_msg *msg) |
33d07337 | 5328 | { |
79dbd1ba | 5329 | struct ceph_osd *o = msg->con->private; |
33d07337 | 5330 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 5331 | |
33d07337 YZ |
5332 | return ceph_auth_sign_message(auth, msg); |
5333 | } | |
5334 | ||
79dbd1ba | 5335 | static int osd_check_message_signature(struct ceph_msg *msg) |
33d07337 | 5336 | { |
79dbd1ba | 5337 | struct ceph_osd *o = msg->con->private; |
33d07337 | 5338 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 5339 | |
33d07337 YZ |
5340 | return ceph_auth_check_message_signature(auth, msg); |
5341 | } | |
5342 | ||
9e32789f | 5343 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
5344 | .get = get_osd_con, |
5345 | .put = put_osd_con, | |
5346 | .dispatch = dispatch, | |
4e7a5dcd SW |
5347 | .get_authorizer = get_authorizer, |
5348 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 5349 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 5350 | .alloc_msg = alloc_msg, |
8cb441c0 | 5351 | .reencode_message = osd_reencode_message, |
79dbd1ba ID |
5352 | .sign_message = osd_sign_message, |
5353 | .check_message_signature = osd_check_message_signature, | |
5aea3dcd | 5354 | .fault = osd_fault, |
f24e9980 | 5355 | }; |