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 | |
3d14c5d2 YS |
15 | #include <linux/ceph/libceph.h> |
16 | #include <linux/ceph/osd_client.h> | |
17 | #include <linux/ceph/messenger.h> | |
18 | #include <linux/ceph/decode.h> | |
19 | #include <linux/ceph/auth.h> | |
20 | #include <linux/ceph/pagelist.h> | |
f24e9980 | 21 | |
c16e7869 | 22 | #define OSD_OPREPLY_FRONT_LEN 512 |
0d59ab81 | 23 | |
5522ae0b AE |
24 | static struct kmem_cache *ceph_osd_request_cache; |
25 | ||
9e32789f | 26 | static const struct ceph_connection_operations osd_con_ops; |
f24e9980 | 27 | |
f24e9980 SW |
28 | /* |
29 | * Implement client access to distributed object storage cluster. | |
30 | * | |
31 | * All data objects are stored within a cluster/cloud of OSDs, or | |
32 | * "object storage devices." (Note that Ceph OSDs have _nothing_ to | |
33 | * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply | |
34 | * remote daemons serving up and coordinating consistent and safe | |
35 | * access to storage. | |
36 | * | |
37 | * Cluster membership and the mapping of data objects onto storage devices | |
38 | * are described by the osd map. | |
39 | * | |
40 | * We keep track of pending OSD requests (read, write), resubmit | |
41 | * requests to different OSDs when the cluster topology/data layout | |
42 | * change, or retry the affected requests when the communications | |
43 | * channel with an OSD is reset. | |
44 | */ | |
45 | ||
5aea3dcd ID |
46 | static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req); |
47 | static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req); | |
922dab61 ID |
48 | static void link_linger(struct ceph_osd *osd, |
49 | struct ceph_osd_linger_request *lreq); | |
50 | static void unlink_linger(struct ceph_osd *osd, | |
51 | struct ceph_osd_linger_request *lreq); | |
5aea3dcd ID |
52 | |
53 | #if 1 | |
54 | static inline bool rwsem_is_wrlocked(struct rw_semaphore *sem) | |
55 | { | |
56 | bool wrlocked = true; | |
57 | ||
58 | if (unlikely(down_read_trylock(sem))) { | |
59 | wrlocked = false; | |
60 | up_read(sem); | |
61 | } | |
62 | ||
63 | return wrlocked; | |
64 | } | |
65 | static inline void verify_osdc_locked(struct ceph_osd_client *osdc) | |
66 | { | |
67 | WARN_ON(!rwsem_is_locked(&osdc->lock)); | |
68 | } | |
69 | static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) | |
70 | { | |
71 | WARN_ON(!rwsem_is_wrlocked(&osdc->lock)); | |
72 | } | |
73 | static inline void verify_osd_locked(struct ceph_osd *osd) | |
74 | { | |
75 | struct ceph_osd_client *osdc = osd->o_osdc; | |
76 | ||
77 | WARN_ON(!(mutex_is_locked(&osd->lock) && | |
78 | rwsem_is_locked(&osdc->lock)) && | |
79 | !rwsem_is_wrlocked(&osdc->lock)); | |
80 | } | |
922dab61 ID |
81 | static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) |
82 | { | |
83 | WARN_ON(!mutex_is_locked(&lreq->lock)); | |
84 | } | |
5aea3dcd ID |
85 | #else |
86 | static inline void verify_osdc_locked(struct ceph_osd_client *osdc) { } | |
87 | static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) { } | |
88 | static inline void verify_osd_locked(struct ceph_osd *osd) { } | |
922dab61 | 89 | static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) { } |
5aea3dcd ID |
90 | #endif |
91 | ||
f24e9980 SW |
92 | /* |
93 | * calculate the mapping of a file extent onto an object, and fill out the | |
94 | * request accordingly. shorten extent as necessary if it crosses an | |
95 | * object boundary. | |
96 | * | |
97 | * fill osd op in request message. | |
98 | */ | |
dbe0fc41 | 99 | static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, |
a19dadfb | 100 | u64 *objnum, u64 *objoff, u64 *objlen) |
f24e9980 | 101 | { |
60e56f13 | 102 | u64 orig_len = *plen; |
d63b77f4 | 103 | int r; |
f24e9980 | 104 | |
60e56f13 | 105 | /* object extent? */ |
75d1c941 AE |
106 | r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, |
107 | objoff, objlen); | |
d63b77f4 SW |
108 | if (r < 0) |
109 | return r; | |
75d1c941 AE |
110 | if (*objlen < orig_len) { |
111 | *plen = *objlen; | |
60e56f13 AE |
112 | dout(" skipping last %llu, final file extent %llu~%llu\n", |
113 | orig_len - *plen, off, *plen); | |
114 | } | |
115 | ||
75d1c941 | 116 | dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); |
f24e9980 | 117 | |
3ff5f385 | 118 | return 0; |
f24e9980 SW |
119 | } |
120 | ||
c54d47bf AE |
121 | static void ceph_osd_data_init(struct ceph_osd_data *osd_data) |
122 | { | |
123 | memset(osd_data, 0, sizeof (*osd_data)); | |
124 | osd_data->type = CEPH_OSD_DATA_TYPE_NONE; | |
125 | } | |
126 | ||
a4ce40a9 | 127 | static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
128 | struct page **pages, u64 length, u32 alignment, |
129 | bool pages_from_pool, bool own_pages) | |
130 | { | |
131 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; | |
132 | osd_data->pages = pages; | |
133 | osd_data->length = length; | |
134 | osd_data->alignment = alignment; | |
135 | osd_data->pages_from_pool = pages_from_pool; | |
136 | osd_data->own_pages = own_pages; | |
137 | } | |
43bfe5de | 138 | |
a4ce40a9 | 139 | static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
140 | struct ceph_pagelist *pagelist) |
141 | { | |
142 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; | |
143 | osd_data->pagelist = pagelist; | |
144 | } | |
43bfe5de AE |
145 | |
146 | #ifdef CONFIG_BLOCK | |
a4ce40a9 | 147 | static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
148 | struct bio *bio, size_t bio_length) |
149 | { | |
150 | osd_data->type = CEPH_OSD_DATA_TYPE_BIO; | |
151 | osd_data->bio = bio; | |
152 | osd_data->bio_length = bio_length; | |
153 | } | |
43bfe5de AE |
154 | #endif /* CONFIG_BLOCK */ |
155 | ||
8a703a38 IC |
156 | #define osd_req_op_data(oreq, whch, typ, fld) \ |
157 | ({ \ | |
158 | struct ceph_osd_request *__oreq = (oreq); \ | |
159 | unsigned int __whch = (whch); \ | |
160 | BUG_ON(__whch >= __oreq->r_num_ops); \ | |
161 | &__oreq->r_ops[__whch].typ.fld; \ | |
162 | }) | |
863c7eb5 | 163 | |
49719778 AE |
164 | static struct ceph_osd_data * |
165 | osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) | |
166 | { | |
167 | BUG_ON(which >= osd_req->r_num_ops); | |
168 | ||
169 | return &osd_req->r_ops[which].raw_data_in; | |
170 | } | |
171 | ||
a4ce40a9 AE |
172 | struct ceph_osd_data * |
173 | osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, | |
406e2c9f | 174 | unsigned int which) |
a4ce40a9 | 175 | { |
863c7eb5 | 176 | return osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
177 | } |
178 | EXPORT_SYMBOL(osd_req_op_extent_osd_data); | |
179 | ||
49719778 AE |
180 | void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, |
181 | unsigned int which, struct page **pages, | |
182 | u64 length, u32 alignment, | |
183 | bool pages_from_pool, bool own_pages) | |
184 | { | |
185 | struct ceph_osd_data *osd_data; | |
186 | ||
187 | osd_data = osd_req_op_raw_data_in(osd_req, which); | |
188 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
189 | pages_from_pool, own_pages); | |
190 | } | |
191 | EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); | |
192 | ||
a4ce40a9 | 193 | void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, |
406e2c9f AE |
194 | unsigned int which, struct page **pages, |
195 | u64 length, u32 alignment, | |
a4ce40a9 AE |
196 | bool pages_from_pool, bool own_pages) |
197 | { | |
198 | struct ceph_osd_data *osd_data; | |
199 | ||
863c7eb5 | 200 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
201 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
202 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
203 | } |
204 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); | |
205 | ||
206 | void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, | |
406e2c9f | 207 | unsigned int which, struct ceph_pagelist *pagelist) |
a4ce40a9 AE |
208 | { |
209 | struct ceph_osd_data *osd_data; | |
210 | ||
863c7eb5 | 211 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 | 212 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
213 | } |
214 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); | |
215 | ||
216 | #ifdef CONFIG_BLOCK | |
217 | void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, | |
406e2c9f | 218 | unsigned int which, struct bio *bio, size_t bio_length) |
a4ce40a9 AE |
219 | { |
220 | struct ceph_osd_data *osd_data; | |
863c7eb5 AE |
221 | |
222 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); | |
a4ce40a9 | 223 | ceph_osd_data_bio_init(osd_data, bio, bio_length); |
a4ce40a9 AE |
224 | } |
225 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); | |
226 | #endif /* CONFIG_BLOCK */ | |
227 | ||
228 | static void osd_req_op_cls_request_info_pagelist( | |
229 | struct ceph_osd_request *osd_req, | |
230 | unsigned int which, struct ceph_pagelist *pagelist) | |
231 | { | |
232 | struct ceph_osd_data *osd_data; | |
233 | ||
863c7eb5 | 234 | osd_data = osd_req_op_data(osd_req, which, cls, request_info); |
a4ce40a9 | 235 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
236 | } |
237 | ||
04017e29 AE |
238 | void osd_req_op_cls_request_data_pagelist( |
239 | struct ceph_osd_request *osd_req, | |
240 | unsigned int which, struct ceph_pagelist *pagelist) | |
241 | { | |
242 | struct ceph_osd_data *osd_data; | |
243 | ||
863c7eb5 | 244 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); |
04017e29 | 245 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
bb873b53 ID |
246 | osd_req->r_ops[which].cls.indata_len += pagelist->length; |
247 | osd_req->r_ops[which].indata_len += pagelist->length; | |
04017e29 AE |
248 | } |
249 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); | |
250 | ||
6c57b554 AE |
251 | void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, |
252 | unsigned int which, struct page **pages, u64 length, | |
253 | u32 alignment, bool pages_from_pool, bool own_pages) | |
254 | { | |
255 | struct ceph_osd_data *osd_data; | |
256 | ||
257 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); | |
258 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
259 | pages_from_pool, own_pages); | |
bb873b53 ID |
260 | osd_req->r_ops[which].cls.indata_len += length; |
261 | osd_req->r_ops[which].indata_len += length; | |
6c57b554 AE |
262 | } |
263 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); | |
264 | ||
a4ce40a9 AE |
265 | void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, |
266 | unsigned int which, struct page **pages, u64 length, | |
267 | u32 alignment, bool pages_from_pool, bool own_pages) | |
268 | { | |
269 | struct ceph_osd_data *osd_data; | |
270 | ||
863c7eb5 | 271 | osd_data = osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
272 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
273 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
274 | } |
275 | EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); | |
276 | ||
23c08a9c AE |
277 | static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) |
278 | { | |
279 | switch (osd_data->type) { | |
280 | case CEPH_OSD_DATA_TYPE_NONE: | |
281 | return 0; | |
282 | case CEPH_OSD_DATA_TYPE_PAGES: | |
283 | return osd_data->length; | |
284 | case CEPH_OSD_DATA_TYPE_PAGELIST: | |
285 | return (u64)osd_data->pagelist->length; | |
286 | #ifdef CONFIG_BLOCK | |
287 | case CEPH_OSD_DATA_TYPE_BIO: | |
288 | return (u64)osd_data->bio_length; | |
289 | #endif /* CONFIG_BLOCK */ | |
290 | default: | |
291 | WARN(true, "unrecognized data type %d\n", (int)osd_data->type); | |
292 | return 0; | |
293 | } | |
294 | } | |
295 | ||
c54d47bf AE |
296 | static void ceph_osd_data_release(struct ceph_osd_data *osd_data) |
297 | { | |
5476492f | 298 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { |
c54d47bf AE |
299 | int num_pages; |
300 | ||
301 | num_pages = calc_pages_for((u64)osd_data->alignment, | |
302 | (u64)osd_data->length); | |
303 | ceph_release_page_vector(osd_data->pages, num_pages); | |
304 | } | |
5476492f AE |
305 | ceph_osd_data_init(osd_data); |
306 | } | |
307 | ||
308 | static void osd_req_op_data_release(struct ceph_osd_request *osd_req, | |
309 | unsigned int which) | |
310 | { | |
311 | struct ceph_osd_req_op *op; | |
312 | ||
313 | BUG_ON(which >= osd_req->r_num_ops); | |
314 | op = &osd_req->r_ops[which]; | |
315 | ||
316 | switch (op->op) { | |
317 | case CEPH_OSD_OP_READ: | |
318 | case CEPH_OSD_OP_WRITE: | |
e30b7577 | 319 | case CEPH_OSD_OP_WRITEFULL: |
5476492f AE |
320 | ceph_osd_data_release(&op->extent.osd_data); |
321 | break; | |
322 | case CEPH_OSD_OP_CALL: | |
323 | ceph_osd_data_release(&op->cls.request_info); | |
04017e29 | 324 | ceph_osd_data_release(&op->cls.request_data); |
5476492f AE |
325 | ceph_osd_data_release(&op->cls.response_data); |
326 | break; | |
d74b50be YZ |
327 | case CEPH_OSD_OP_SETXATTR: |
328 | case CEPH_OSD_OP_CMPXATTR: | |
329 | ceph_osd_data_release(&op->xattr.osd_data); | |
330 | break; | |
66ba609f YZ |
331 | case CEPH_OSD_OP_STAT: |
332 | ceph_osd_data_release(&op->raw_data_in); | |
333 | break; | |
922dab61 ID |
334 | case CEPH_OSD_OP_NOTIFY_ACK: |
335 | ceph_osd_data_release(&op->notify_ack.request_data); | |
336 | break; | |
19079203 ID |
337 | case CEPH_OSD_OP_NOTIFY: |
338 | ceph_osd_data_release(&op->notify.request_data); | |
339 | ceph_osd_data_release(&op->notify.response_data); | |
340 | break; | |
5476492f AE |
341 | default: |
342 | break; | |
343 | } | |
c54d47bf AE |
344 | } |
345 | ||
63244fa1 ID |
346 | /* |
347 | * Assumes @t is zero-initialized. | |
348 | */ | |
349 | static void target_init(struct ceph_osd_request_target *t) | |
350 | { | |
351 | ceph_oid_init(&t->base_oid); | |
352 | ceph_oloc_init(&t->base_oloc); | |
353 | ceph_oid_init(&t->target_oid); | |
354 | ceph_oloc_init(&t->target_oloc); | |
355 | ||
356 | ceph_osds_init(&t->acting); | |
357 | ceph_osds_init(&t->up); | |
358 | t->size = -1; | |
359 | t->min_size = -1; | |
360 | ||
361 | t->osd = CEPH_HOMELESS_OSD; | |
362 | } | |
363 | ||
922dab61 ID |
364 | static void target_copy(struct ceph_osd_request_target *dest, |
365 | const struct ceph_osd_request_target *src) | |
366 | { | |
367 | ceph_oid_copy(&dest->base_oid, &src->base_oid); | |
368 | ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); | |
369 | ceph_oid_copy(&dest->target_oid, &src->target_oid); | |
370 | ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); | |
371 | ||
372 | dest->pgid = src->pgid; /* struct */ | |
373 | dest->pg_num = src->pg_num; | |
374 | dest->pg_num_mask = src->pg_num_mask; | |
375 | ceph_osds_copy(&dest->acting, &src->acting); | |
376 | ceph_osds_copy(&dest->up, &src->up); | |
377 | dest->size = src->size; | |
378 | dest->min_size = src->min_size; | |
379 | dest->sort_bitwise = src->sort_bitwise; | |
380 | ||
381 | dest->flags = src->flags; | |
382 | dest->paused = src->paused; | |
383 | ||
384 | dest->osd = src->osd; | |
385 | } | |
386 | ||
63244fa1 ID |
387 | static void target_destroy(struct ceph_osd_request_target *t) |
388 | { | |
389 | ceph_oid_destroy(&t->base_oid); | |
390 | ceph_oid_destroy(&t->target_oid); | |
391 | } | |
392 | ||
f24e9980 SW |
393 | /* |
394 | * requests | |
395 | */ | |
3540bfdb ID |
396 | static void request_release_checks(struct ceph_osd_request *req) |
397 | { | |
398 | WARN_ON(!RB_EMPTY_NODE(&req->r_node)); | |
3540bfdb ID |
399 | WARN_ON(!list_empty(&req->r_unsafe_item)); |
400 | WARN_ON(req->r_osd); | |
401 | } | |
402 | ||
9e94af20 | 403 | static void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 404 | { |
9e94af20 ID |
405 | struct ceph_osd_request *req = container_of(kref, |
406 | struct ceph_osd_request, r_kref); | |
5476492f | 407 | unsigned int which; |
415e49a9 | 408 | |
9e94af20 ID |
409 | dout("%s %p (r_request %p r_reply %p)\n", __func__, req, |
410 | req->r_request, req->r_reply); | |
3540bfdb | 411 | request_release_checks(req); |
9e94af20 | 412 | |
415e49a9 SW |
413 | if (req->r_request) |
414 | ceph_msg_put(req->r_request); | |
5aea3dcd | 415 | if (req->r_reply) |
ab8cb34a | 416 | ceph_msg_put(req->r_reply); |
0fff87ec | 417 | |
5476492f AE |
418 | for (which = 0; which < req->r_num_ops; which++) |
419 | osd_req_op_data_release(req, which); | |
0fff87ec | 420 | |
a66dd383 | 421 | target_destroy(&req->r_t); |
415e49a9 | 422 | ceph_put_snap_context(req->r_snapc); |
d30291b9 | 423 | |
415e49a9 SW |
424 | if (req->r_mempool) |
425 | mempool_free(req, req->r_osdc->req_mempool); | |
3f1af42a | 426 | else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) |
5522ae0b | 427 | kmem_cache_free(ceph_osd_request_cache, req); |
3f1af42a ID |
428 | else |
429 | kfree(req); | |
f24e9980 | 430 | } |
9e94af20 ID |
431 | |
432 | void ceph_osdc_get_request(struct ceph_osd_request *req) | |
433 | { | |
434 | dout("%s %p (was %d)\n", __func__, req, | |
435 | atomic_read(&req->r_kref.refcount)); | |
436 | kref_get(&req->r_kref); | |
437 | } | |
438 | EXPORT_SYMBOL(ceph_osdc_get_request); | |
439 | ||
440 | void ceph_osdc_put_request(struct ceph_osd_request *req) | |
441 | { | |
3ed97d63 ID |
442 | if (req) { |
443 | dout("%s %p (was %d)\n", __func__, req, | |
444 | atomic_read(&req->r_kref.refcount)); | |
445 | kref_put(&req->r_kref, ceph_osdc_release_request); | |
446 | } | |
9e94af20 ID |
447 | } |
448 | EXPORT_SYMBOL(ceph_osdc_put_request); | |
68b4476b | 449 | |
3540bfdb ID |
450 | static void request_init(struct ceph_osd_request *req) |
451 | { | |
452 | /* req only, each op is zeroed in _osd_req_op_init() */ | |
453 | memset(req, 0, sizeof(*req)); | |
454 | ||
455 | kref_init(&req->r_kref); | |
456 | init_completion(&req->r_completion); | |
457 | init_completion(&req->r_safe_completion); | |
458 | RB_CLEAR_NODE(&req->r_node); | |
3540bfdb ID |
459 | INIT_LIST_HEAD(&req->r_unsafe_item); |
460 | ||
461 | target_init(&req->r_t); | |
462 | } | |
463 | ||
922dab61 ID |
464 | /* |
465 | * This is ugly, but it allows us to reuse linger registration and ping | |
466 | * requests, keeping the structure of the code around send_linger{_ping}() | |
467 | * reasonable. Setting up a min_nr=2 mempool for each linger request | |
468 | * and dealing with copying ops (this blasts req only, watch op remains | |
469 | * intact) isn't any better. | |
470 | */ | |
471 | static void request_reinit(struct ceph_osd_request *req) | |
472 | { | |
473 | struct ceph_osd_client *osdc = req->r_osdc; | |
474 | bool mempool = req->r_mempool; | |
475 | unsigned int num_ops = req->r_num_ops; | |
476 | u64 snapid = req->r_snapid; | |
477 | struct ceph_snap_context *snapc = req->r_snapc; | |
478 | bool linger = req->r_linger; | |
479 | struct ceph_msg *request_msg = req->r_request; | |
480 | struct ceph_msg *reply_msg = req->r_reply; | |
481 | ||
482 | dout("%s req %p\n", __func__, req); | |
483 | WARN_ON(atomic_read(&req->r_kref.refcount) != 1); | |
484 | request_release_checks(req); | |
485 | ||
486 | WARN_ON(atomic_read(&request_msg->kref.refcount) != 1); | |
487 | WARN_ON(atomic_read(&reply_msg->kref.refcount) != 1); | |
488 | target_destroy(&req->r_t); | |
489 | ||
490 | request_init(req); | |
491 | req->r_osdc = osdc; | |
492 | req->r_mempool = mempool; | |
493 | req->r_num_ops = num_ops; | |
494 | req->r_snapid = snapid; | |
495 | req->r_snapc = snapc; | |
496 | req->r_linger = linger; | |
497 | req->r_request = request_msg; | |
498 | req->r_reply = reply_msg; | |
499 | } | |
500 | ||
3499e8a5 | 501 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 502 | struct ceph_snap_context *snapc, |
1b83bef2 | 503 | unsigned int num_ops, |
3499e8a5 | 504 | bool use_mempool, |
54a54007 | 505 | gfp_t gfp_flags) |
f24e9980 SW |
506 | { |
507 | struct ceph_osd_request *req; | |
1b83bef2 | 508 | |
f24e9980 | 509 | if (use_mempool) { |
3f1af42a | 510 | BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); |
3499e8a5 | 511 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
3f1af42a ID |
512 | } else if (num_ops <= CEPH_OSD_SLAB_OPS) { |
513 | req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); | |
f24e9980 | 514 | } else { |
3f1af42a ID |
515 | BUG_ON(num_ops > CEPH_OSD_MAX_OPS); |
516 | req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), | |
517 | gfp_flags); | |
f24e9980 | 518 | } |
3f1af42a | 519 | if (unlikely(!req)) |
a79832f2 | 520 | return NULL; |
f24e9980 | 521 | |
3540bfdb | 522 | request_init(req); |
f24e9980 SW |
523 | req->r_osdc = osdc; |
524 | req->r_mempool = use_mempool; | |
79528734 | 525 | req->r_num_ops = num_ops; |
84127282 ID |
526 | req->r_snapid = CEPH_NOSNAP; |
527 | req->r_snapc = ceph_get_snap_context(snapc); | |
68b4476b | 528 | |
13d1ad16 ID |
529 | dout("%s req %p\n", __func__, req); |
530 | return req; | |
531 | } | |
532 | EXPORT_SYMBOL(ceph_osdc_alloc_request); | |
3f1af42a | 533 | |
13d1ad16 ID |
534 | int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) |
535 | { | |
536 | struct ceph_osd_client *osdc = req->r_osdc; | |
537 | struct ceph_msg *msg; | |
538 | int msg_size; | |
c16e7869 | 539 | |
d30291b9 ID |
540 | WARN_ON(ceph_oid_empty(&req->r_base_oid)); |
541 | ||
13d1ad16 | 542 | /* create request message */ |
ae458f5a ID |
543 | msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ |
544 | msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ | |
545 | msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ | |
546 | msg_size += 1 + 8 + 4 + 4; /* pgid */ | |
13d1ad16 ID |
547 | msg_size += 4 + req->r_base_oid.name_len; /* oid */ |
548 | msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); | |
ae458f5a ID |
549 | msg_size += 8; /* snapid */ |
550 | msg_size += 8; /* snap_seq */ | |
13d1ad16 | 551 | msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); |
ae458f5a ID |
552 | msg_size += 4; /* retry_attempt */ |
553 | ||
13d1ad16 | 554 | if (req->r_mempool) |
8f3bc053 | 555 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 556 | else |
13d1ad16 ID |
557 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); |
558 | if (!msg) | |
559 | return -ENOMEM; | |
68b4476b | 560 | |
f24e9980 | 561 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 | 562 | req->r_request = msg; |
3499e8a5 | 563 | |
13d1ad16 ID |
564 | /* create reply message */ |
565 | msg_size = OSD_OPREPLY_FRONT_LEN; | |
711da55d ID |
566 | msg_size += req->r_base_oid.name_len; |
567 | msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); | |
13d1ad16 ID |
568 | |
569 | if (req->r_mempool) | |
570 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
571 | else | |
572 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); | |
573 | if (!msg) | |
574 | return -ENOMEM; | |
575 | ||
576 | req->r_reply = msg; | |
577 | ||
578 | return 0; | |
3499e8a5 | 579 | } |
13d1ad16 | 580 | EXPORT_SYMBOL(ceph_osdc_alloc_messages); |
3499e8a5 | 581 | |
a8dd0a37 | 582 | static bool osd_req_opcode_valid(u16 opcode) |
68b4476b | 583 | { |
a8dd0a37 | 584 | switch (opcode) { |
70b5bfa3 ID |
585 | #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; |
586 | __CEPH_FORALL_OSD_OPS(GENERATE_CASE) | |
587 | #undef GENERATE_CASE | |
a8dd0a37 AE |
588 | default: |
589 | return false; | |
590 | } | |
591 | } | |
592 | ||
33803f33 AE |
593 | /* |
594 | * This is an osd op init function for opcodes that have no data or | |
595 | * other information associated with them. It also serves as a | |
596 | * common init routine for all the other init functions, below. | |
597 | */ | |
c99d2d4a | 598 | static struct ceph_osd_req_op * |
49719778 | 599 | _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, |
144cba14 | 600 | u16 opcode, u32 flags) |
33803f33 | 601 | { |
c99d2d4a AE |
602 | struct ceph_osd_req_op *op; |
603 | ||
604 | BUG_ON(which >= osd_req->r_num_ops); | |
33803f33 AE |
605 | BUG_ON(!osd_req_opcode_valid(opcode)); |
606 | ||
c99d2d4a | 607 | op = &osd_req->r_ops[which]; |
33803f33 | 608 | memset(op, 0, sizeof (*op)); |
33803f33 | 609 | op->op = opcode; |
144cba14 | 610 | op->flags = flags; |
c99d2d4a AE |
611 | |
612 | return op; | |
33803f33 AE |
613 | } |
614 | ||
49719778 | 615 | void osd_req_op_init(struct ceph_osd_request *osd_req, |
144cba14 | 616 | unsigned int which, u16 opcode, u32 flags) |
49719778 | 617 | { |
144cba14 | 618 | (void)_osd_req_op_init(osd_req, which, opcode, flags); |
49719778 AE |
619 | } |
620 | EXPORT_SYMBOL(osd_req_op_init); | |
621 | ||
c99d2d4a AE |
622 | void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
623 | unsigned int which, u16 opcode, | |
33803f33 AE |
624 | u64 offset, u64 length, |
625 | u64 truncate_size, u32 truncate_seq) | |
626 | { | |
144cba14 YZ |
627 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
628 | opcode, 0); | |
33803f33 AE |
629 | size_t payload_len = 0; |
630 | ||
ad7a60de | 631 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
e30b7577 ID |
632 | opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && |
633 | opcode != CEPH_OSD_OP_TRUNCATE); | |
33803f33 | 634 | |
33803f33 AE |
635 | op->extent.offset = offset; |
636 | op->extent.length = length; | |
637 | op->extent.truncate_size = truncate_size; | |
638 | op->extent.truncate_seq = truncate_seq; | |
e30b7577 | 639 | if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) |
33803f33 AE |
640 | payload_len += length; |
641 | ||
de2aa102 | 642 | op->indata_len = payload_len; |
33803f33 AE |
643 | } |
644 | EXPORT_SYMBOL(osd_req_op_extent_init); | |
645 | ||
c99d2d4a AE |
646 | void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
647 | unsigned int which, u64 length) | |
e5975c7c | 648 | { |
c99d2d4a AE |
649 | struct ceph_osd_req_op *op; |
650 | u64 previous; | |
651 | ||
652 | BUG_ON(which >= osd_req->r_num_ops); | |
653 | op = &osd_req->r_ops[which]; | |
654 | previous = op->extent.length; | |
e5975c7c AE |
655 | |
656 | if (length == previous) | |
657 | return; /* Nothing to do */ | |
658 | BUG_ON(length > previous); | |
659 | ||
660 | op->extent.length = length; | |
de2aa102 | 661 | op->indata_len -= previous - length; |
e5975c7c AE |
662 | } |
663 | EXPORT_SYMBOL(osd_req_op_extent_update); | |
664 | ||
2c63f49a YZ |
665 | void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, |
666 | unsigned int which, u64 offset_inc) | |
667 | { | |
668 | struct ceph_osd_req_op *op, *prev_op; | |
669 | ||
670 | BUG_ON(which + 1 >= osd_req->r_num_ops); | |
671 | ||
672 | prev_op = &osd_req->r_ops[which]; | |
673 | op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); | |
674 | /* dup previous one */ | |
675 | op->indata_len = prev_op->indata_len; | |
676 | op->outdata_len = prev_op->outdata_len; | |
677 | op->extent = prev_op->extent; | |
678 | /* adjust offset */ | |
679 | op->extent.offset += offset_inc; | |
680 | op->extent.length -= offset_inc; | |
681 | ||
682 | if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) | |
683 | op->indata_len -= offset_inc; | |
684 | } | |
685 | EXPORT_SYMBOL(osd_req_op_extent_dup_last); | |
686 | ||
c99d2d4a | 687 | void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, |
04017e29 | 688 | u16 opcode, const char *class, const char *method) |
33803f33 | 689 | { |
144cba14 YZ |
690 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
691 | opcode, 0); | |
5f562df5 | 692 | struct ceph_pagelist *pagelist; |
33803f33 AE |
693 | size_t payload_len = 0; |
694 | size_t size; | |
695 | ||
696 | BUG_ON(opcode != CEPH_OSD_OP_CALL); | |
697 | ||
5f562df5 AE |
698 | pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); |
699 | BUG_ON(!pagelist); | |
700 | ceph_pagelist_init(pagelist); | |
701 | ||
33803f33 AE |
702 | op->cls.class_name = class; |
703 | size = strlen(class); | |
704 | BUG_ON(size > (size_t) U8_MAX); | |
705 | op->cls.class_len = size; | |
5f562df5 | 706 | ceph_pagelist_append(pagelist, class, size); |
33803f33 AE |
707 | payload_len += size; |
708 | ||
709 | op->cls.method_name = method; | |
710 | size = strlen(method); | |
711 | BUG_ON(size > (size_t) U8_MAX); | |
712 | op->cls.method_len = size; | |
5f562df5 | 713 | ceph_pagelist_append(pagelist, method, size); |
33803f33 AE |
714 | payload_len += size; |
715 | ||
a4ce40a9 | 716 | osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); |
5f562df5 | 717 | |
de2aa102 | 718 | op->indata_len = payload_len; |
33803f33 AE |
719 | } |
720 | EXPORT_SYMBOL(osd_req_op_cls_init); | |
8c042b0d | 721 | |
d74b50be YZ |
722 | int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, |
723 | u16 opcode, const char *name, const void *value, | |
724 | size_t size, u8 cmp_op, u8 cmp_mode) | |
725 | { | |
144cba14 YZ |
726 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
727 | opcode, 0); | |
d74b50be YZ |
728 | struct ceph_pagelist *pagelist; |
729 | size_t payload_len; | |
730 | ||
731 | BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); | |
732 | ||
733 | pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); | |
734 | if (!pagelist) | |
735 | return -ENOMEM; | |
736 | ||
737 | ceph_pagelist_init(pagelist); | |
738 | ||
739 | payload_len = strlen(name); | |
740 | op->xattr.name_len = payload_len; | |
741 | ceph_pagelist_append(pagelist, name, payload_len); | |
742 | ||
743 | op->xattr.value_len = size; | |
744 | ceph_pagelist_append(pagelist, value, size); | |
745 | payload_len += size; | |
746 | ||
747 | op->xattr.cmp_op = cmp_op; | |
748 | op->xattr.cmp_mode = cmp_mode; | |
749 | ||
750 | ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); | |
de2aa102 | 751 | op->indata_len = payload_len; |
d74b50be YZ |
752 | return 0; |
753 | } | |
754 | EXPORT_SYMBOL(osd_req_op_xattr_init); | |
755 | ||
922dab61 ID |
756 | /* |
757 | * @watch_opcode: CEPH_OSD_WATCH_OP_* | |
758 | */ | |
759 | static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, | |
760 | u64 cookie, u8 watch_opcode) | |
33803f33 | 761 | { |
922dab61 | 762 | struct ceph_osd_req_op *op; |
33803f33 | 763 | |
922dab61 | 764 | op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); |
33803f33 | 765 | op->watch.cookie = cookie; |
922dab61 ID |
766 | op->watch.op = watch_opcode; |
767 | op->watch.gen = 0; | |
33803f33 | 768 | } |
33803f33 | 769 | |
c647b8a8 ID |
770 | void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, |
771 | unsigned int which, | |
772 | u64 expected_object_size, | |
773 | u64 expected_write_size) | |
774 | { | |
775 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, | |
144cba14 YZ |
776 | CEPH_OSD_OP_SETALLOCHINT, |
777 | 0); | |
c647b8a8 ID |
778 | |
779 | op->alloc_hint.expected_object_size = expected_object_size; | |
780 | op->alloc_hint.expected_write_size = expected_write_size; | |
781 | ||
782 | /* | |
783 | * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed | |
784 | * not worth a feature bit. Set FAILOK per-op flag to make | |
785 | * sure older osds don't trip over an unsupported opcode. | |
786 | */ | |
787 | op->flags |= CEPH_OSD_OP_FLAG_FAILOK; | |
788 | } | |
789 | EXPORT_SYMBOL(osd_req_op_alloc_hint_init); | |
790 | ||
90af3602 | 791 | static void ceph_osdc_msg_data_add(struct ceph_msg *msg, |
ec9123c5 AE |
792 | struct ceph_osd_data *osd_data) |
793 | { | |
794 | u64 length = ceph_osd_data_length(osd_data); | |
795 | ||
796 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { | |
797 | BUG_ON(length > (u64) SIZE_MAX); | |
798 | if (length) | |
90af3602 | 799 | ceph_msg_data_add_pages(msg, osd_data->pages, |
ec9123c5 AE |
800 | length, osd_data->alignment); |
801 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { | |
802 | BUG_ON(!length); | |
90af3602 | 803 | ceph_msg_data_add_pagelist(msg, osd_data->pagelist); |
ec9123c5 AE |
804 | #ifdef CONFIG_BLOCK |
805 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { | |
90af3602 | 806 | ceph_msg_data_add_bio(msg, osd_data->bio, length); |
ec9123c5 AE |
807 | #endif |
808 | } else { | |
809 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); | |
810 | } | |
811 | } | |
812 | ||
bb873b53 ID |
813 | static u32 osd_req_encode_op(struct ceph_osd_op *dst, |
814 | const struct ceph_osd_req_op *src) | |
a8dd0a37 | 815 | { |
a8dd0a37 AE |
816 | if (WARN_ON(!osd_req_opcode_valid(src->op))) { |
817 | pr_err("unrecognized osd opcode %d\n", src->op); | |
818 | ||
819 | return 0; | |
820 | } | |
821 | ||
822 | switch (src->op) { | |
823 | case CEPH_OSD_OP_STAT: | |
824 | break; | |
825 | case CEPH_OSD_OP_READ: | |
826 | case CEPH_OSD_OP_WRITE: | |
e30b7577 | 827 | case CEPH_OSD_OP_WRITEFULL: |
ad7a60de | 828 | case CEPH_OSD_OP_ZERO: |
ad7a60de | 829 | case CEPH_OSD_OP_TRUNCATE: |
a8dd0a37 AE |
830 | dst->extent.offset = cpu_to_le64(src->extent.offset); |
831 | dst->extent.length = cpu_to_le64(src->extent.length); | |
832 | dst->extent.truncate_size = | |
833 | cpu_to_le64(src->extent.truncate_size); | |
834 | dst->extent.truncate_seq = | |
835 | cpu_to_le32(src->extent.truncate_seq); | |
836 | break; | |
837 | case CEPH_OSD_OP_CALL: | |
a8dd0a37 AE |
838 | dst->cls.class_len = src->cls.class_len; |
839 | dst->cls.method_len = src->cls.method_len; | |
bb873b53 | 840 | dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); |
a8dd0a37 AE |
841 | break; |
842 | case CEPH_OSD_OP_STARTSYNC: | |
843 | break; | |
a8dd0a37 AE |
844 | case CEPH_OSD_OP_WATCH: |
845 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
922dab61 ID |
846 | dst->watch.ver = cpu_to_le64(0); |
847 | dst->watch.op = src->watch.op; | |
848 | dst->watch.gen = cpu_to_le32(src->watch.gen); | |
849 | break; | |
850 | case CEPH_OSD_OP_NOTIFY_ACK: | |
a8dd0a37 | 851 | break; |
19079203 ID |
852 | case CEPH_OSD_OP_NOTIFY: |
853 | dst->notify.cookie = cpu_to_le64(src->notify.cookie); | |
854 | break; | |
c647b8a8 ID |
855 | case CEPH_OSD_OP_SETALLOCHINT: |
856 | dst->alloc_hint.expected_object_size = | |
857 | cpu_to_le64(src->alloc_hint.expected_object_size); | |
858 | dst->alloc_hint.expected_write_size = | |
859 | cpu_to_le64(src->alloc_hint.expected_write_size); | |
860 | break; | |
d74b50be YZ |
861 | case CEPH_OSD_OP_SETXATTR: |
862 | case CEPH_OSD_OP_CMPXATTR: | |
863 | dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); | |
864 | dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); | |
865 | dst->xattr.cmp_op = src->xattr.cmp_op; | |
866 | dst->xattr.cmp_mode = src->xattr.cmp_mode; | |
d74b50be | 867 | break; |
864e9197 YZ |
868 | case CEPH_OSD_OP_CREATE: |
869 | case CEPH_OSD_OP_DELETE: | |
870 | break; | |
a8dd0a37 | 871 | default: |
4c46459c | 872 | pr_err("unsupported osd opcode %s\n", |
8f63ca2d | 873 | ceph_osd_op_name(src->op)); |
4c46459c | 874 | WARN_ON(1); |
a8dd0a37 AE |
875 | |
876 | return 0; | |
68b4476b | 877 | } |
7b25bf5f | 878 | |
a8dd0a37 | 879 | dst->op = cpu_to_le16(src->op); |
7b25bf5f | 880 | dst->flags = cpu_to_le32(src->flags); |
de2aa102 | 881 | dst->payload_len = cpu_to_le32(src->indata_len); |
175face2 | 882 | |
bb873b53 | 883 | return src->indata_len; |
68b4476b YS |
884 | } |
885 | ||
3499e8a5 YS |
886 | /* |
887 | * build new request AND message, calculate layout, and adjust file | |
888 | * extent as needed. | |
889 | * | |
890 | * if the file was recently truncated, we include information about its | |
891 | * old and new size so that the object can be updated appropriately. (we | |
892 | * avoid synchronously deleting truncated objects because it's slow.) | |
893 | * | |
894 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
895 | * data quickly. | |
896 | */ | |
897 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
898 | struct ceph_file_layout *layout, | |
899 | struct ceph_vino vino, | |
715e4cd4 YZ |
900 | u64 off, u64 *plen, |
901 | unsigned int which, int num_ops, | |
3499e8a5 YS |
902 | int opcode, int flags, |
903 | struct ceph_snap_context *snapc, | |
3499e8a5 YS |
904 | u32 truncate_seq, |
905 | u64 truncate_size, | |
153e5167 | 906 | bool use_mempool) |
3499e8a5 | 907 | { |
68b4476b | 908 | struct ceph_osd_request *req; |
75d1c941 AE |
909 | u64 objnum = 0; |
910 | u64 objoff = 0; | |
911 | u64 objlen = 0; | |
6816282d | 912 | int r; |
68b4476b | 913 | |
ad7a60de | 914 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
864e9197 YZ |
915 | opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && |
916 | opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); | |
68b4476b | 917 | |
acead002 | 918 | req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, |
ae7ca4a3 | 919 | GFP_NOFS); |
13d1ad16 ID |
920 | if (!req) { |
921 | r = -ENOMEM; | |
922 | goto fail; | |
923 | } | |
79528734 | 924 | |
3499e8a5 | 925 | /* calculate max write size */ |
a19dadfb | 926 | r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); |
13d1ad16 ID |
927 | if (r) |
928 | goto fail; | |
a19dadfb | 929 | |
864e9197 | 930 | if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { |
144cba14 | 931 | osd_req_op_init(req, which, opcode, 0); |
864e9197 YZ |
932 | } else { |
933 | u32 object_size = le32_to_cpu(layout->fl_object_size); | |
934 | u32 object_base = off - objoff; | |
935 | if (!(truncate_seq == 1 && truncate_size == -1ULL)) { | |
936 | if (truncate_size <= object_base) { | |
937 | truncate_size = 0; | |
938 | } else { | |
939 | truncate_size -= object_base; | |
940 | if (truncate_size > object_size) | |
941 | truncate_size = object_size; | |
942 | } | |
ccca4e37 | 943 | } |
715e4cd4 | 944 | osd_req_op_extent_init(req, which, opcode, objoff, objlen, |
864e9197 YZ |
945 | truncate_size, truncate_seq); |
946 | } | |
d18d1e28 | 947 | |
bb873b53 | 948 | req->r_flags = flags; |
3c972c95 | 949 | req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); |
d30291b9 | 950 | ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); |
dbe0fc41 | 951 | |
bb873b53 ID |
952 | req->r_snapid = vino.snap; |
953 | if (flags & CEPH_OSD_FLAG_WRITE) | |
954 | req->r_data_offset = off; | |
955 | ||
13d1ad16 ID |
956 | r = ceph_osdc_alloc_messages(req, GFP_NOFS); |
957 | if (r) | |
958 | goto fail; | |
959 | ||
f24e9980 | 960 | return req; |
13d1ad16 ID |
961 | |
962 | fail: | |
963 | ceph_osdc_put_request(req); | |
964 | return ERR_PTR(r); | |
f24e9980 | 965 | } |
3d14c5d2 | 966 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
967 | |
968 | /* | |
969 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
970 | */ | |
fcd00b68 | 971 | DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) |
f24e9980 | 972 | |
0247a0cf ID |
973 | static bool osd_homeless(struct ceph_osd *osd) |
974 | { | |
975 | return osd->o_osd == CEPH_HOMELESS_OSD; | |
976 | } | |
977 | ||
5aea3dcd | 978 | static bool osd_registered(struct ceph_osd *osd) |
f24e9980 | 979 | { |
5aea3dcd | 980 | verify_osdc_locked(osd->o_osdc); |
f24e9980 | 981 | |
5aea3dcd | 982 | return !RB_EMPTY_NODE(&osd->o_node); |
f24e9980 SW |
983 | } |
984 | ||
0247a0cf ID |
985 | /* |
986 | * Assumes @osd is zero-initialized. | |
987 | */ | |
988 | static void osd_init(struct ceph_osd *osd) | |
989 | { | |
990 | atomic_set(&osd->o_ref, 1); | |
991 | RB_CLEAR_NODE(&osd->o_node); | |
5aea3dcd | 992 | osd->o_requests = RB_ROOT; |
922dab61 | 993 | osd->o_linger_requests = RB_ROOT; |
0247a0cf ID |
994 | INIT_LIST_HEAD(&osd->o_osd_lru); |
995 | INIT_LIST_HEAD(&osd->o_keepalive_item); | |
996 | osd->o_incarnation = 1; | |
5aea3dcd | 997 | mutex_init(&osd->lock); |
0247a0cf ID |
998 | } |
999 | ||
1000 | static void osd_cleanup(struct ceph_osd *osd) | |
1001 | { | |
1002 | WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); | |
5aea3dcd | 1003 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); |
922dab61 | 1004 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); |
0247a0cf ID |
1005 | WARN_ON(!list_empty(&osd->o_osd_lru)); |
1006 | WARN_ON(!list_empty(&osd->o_keepalive_item)); | |
1007 | ||
1008 | if (osd->o_auth.authorizer) { | |
1009 | WARN_ON(osd_homeless(osd)); | |
1010 | ceph_auth_destroy_authorizer(osd->o_auth.authorizer); | |
1011 | } | |
1012 | } | |
1013 | ||
f24e9980 SW |
1014 | /* |
1015 | * Track open sessions with osds. | |
1016 | */ | |
e10006f8 | 1017 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
1018 | { |
1019 | struct ceph_osd *osd; | |
1020 | ||
0247a0cf ID |
1021 | WARN_ON(onum == CEPH_HOMELESS_OSD); |
1022 | ||
7a28f59b | 1023 | osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); |
0247a0cf | 1024 | osd_init(osd); |
f24e9980 | 1025 | osd->o_osdc = osdc; |
e10006f8 | 1026 | osd->o_osd = onum; |
f24e9980 | 1027 | |
b7a9e5dd | 1028 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 1029 | |
f24e9980 SW |
1030 | return osd; |
1031 | } | |
1032 | ||
1033 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
1034 | { | |
1035 | if (atomic_inc_not_zero(&osd->o_ref)) { | |
1036 | dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, | |
1037 | atomic_read(&osd->o_ref)); | |
1038 | return osd; | |
1039 | } else { | |
1040 | dout("get_osd %p FAIL\n", osd); | |
1041 | return NULL; | |
1042 | } | |
1043 | } | |
1044 | ||
1045 | static void put_osd(struct ceph_osd *osd) | |
1046 | { | |
1047 | dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), | |
1048 | atomic_read(&osd->o_ref) - 1); | |
b28ec2f3 | 1049 | if (atomic_dec_and_test(&osd->o_ref)) { |
0247a0cf | 1050 | osd_cleanup(osd); |
f24e9980 | 1051 | kfree(osd); |
79494d1b | 1052 | } |
f24e9980 SW |
1053 | } |
1054 | ||
fcd00b68 ID |
1055 | DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) |
1056 | ||
9dd2845c | 1057 | static void __move_osd_to_lru(struct ceph_osd *osd) |
f5a2041b | 1058 | { |
9dd2845c ID |
1059 | struct ceph_osd_client *osdc = osd->o_osdc; |
1060 | ||
1061 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
f5a2041b | 1062 | BUG_ON(!list_empty(&osd->o_osd_lru)); |
bbf37ec3 | 1063 | |
9dd2845c | 1064 | spin_lock(&osdc->osd_lru_lock); |
f5a2041b | 1065 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); |
9dd2845c ID |
1066 | spin_unlock(&osdc->osd_lru_lock); |
1067 | ||
a319bf56 | 1068 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; |
f5a2041b YS |
1069 | } |
1070 | ||
9dd2845c | 1071 | static void maybe_move_osd_to_lru(struct ceph_osd *osd) |
bbf37ec3 | 1072 | { |
5aea3dcd | 1073 | if (RB_EMPTY_ROOT(&osd->o_requests) && |
922dab61 | 1074 | RB_EMPTY_ROOT(&osd->o_linger_requests)) |
9dd2845c | 1075 | __move_osd_to_lru(osd); |
bbf37ec3 ID |
1076 | } |
1077 | ||
f5a2041b YS |
1078 | static void __remove_osd_from_lru(struct ceph_osd *osd) |
1079 | { | |
9dd2845c ID |
1080 | struct ceph_osd_client *osdc = osd->o_osdc; |
1081 | ||
1082 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
1083 | ||
1084 | spin_lock(&osdc->osd_lru_lock); | |
f5a2041b YS |
1085 | if (!list_empty(&osd->o_osd_lru)) |
1086 | list_del_init(&osd->o_osd_lru); | |
9dd2845c | 1087 | spin_unlock(&osdc->osd_lru_lock); |
f5a2041b YS |
1088 | } |
1089 | ||
5aea3dcd ID |
1090 | /* |
1091 | * Close the connection and assign any leftover requests to the | |
1092 | * homeless session. | |
1093 | */ | |
1094 | static void close_osd(struct ceph_osd *osd) | |
1095 | { | |
1096 | struct ceph_osd_client *osdc = osd->o_osdc; | |
1097 | struct rb_node *n; | |
1098 | ||
1099 | verify_osdc_wrlocked(osdc); | |
1100 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
1101 | ||
1102 | ceph_con_close(&osd->o_con); | |
1103 | ||
1104 | for (n = rb_first(&osd->o_requests); n; ) { | |
1105 | struct ceph_osd_request *req = | |
1106 | rb_entry(n, struct ceph_osd_request, r_node); | |
1107 | ||
1108 | n = rb_next(n); /* unlink_request() */ | |
1109 | ||
1110 | dout(" reassigning req %p tid %llu\n", req, req->r_tid); | |
1111 | unlink_request(osd, req); | |
1112 | link_request(&osdc->homeless_osd, req); | |
1113 | } | |
922dab61 ID |
1114 | for (n = rb_first(&osd->o_linger_requests); n; ) { |
1115 | struct ceph_osd_linger_request *lreq = | |
1116 | rb_entry(n, struct ceph_osd_linger_request, node); | |
1117 | ||
1118 | n = rb_next(n); /* unlink_linger() */ | |
1119 | ||
1120 | dout(" reassigning lreq %p linger_id %llu\n", lreq, | |
1121 | lreq->linger_id); | |
1122 | unlink_linger(osd, lreq); | |
1123 | link_linger(&osdc->homeless_osd, lreq); | |
1124 | } | |
5aea3dcd ID |
1125 | |
1126 | __remove_osd_from_lru(osd); | |
1127 | erase_osd(&osdc->osds, osd); | |
1128 | put_osd(osd); | |
1129 | } | |
1130 | ||
f24e9980 SW |
1131 | /* |
1132 | * reset osd connect | |
1133 | */ | |
5aea3dcd | 1134 | static int reopen_osd(struct ceph_osd *osd) |
f24e9980 | 1135 | { |
c3acb181 | 1136 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 1137 | |
5aea3dcd ID |
1138 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); |
1139 | ||
1140 | if (RB_EMPTY_ROOT(&osd->o_requests) && | |
922dab61 | 1141 | RB_EMPTY_ROOT(&osd->o_linger_requests)) { |
5aea3dcd | 1142 | close_osd(osd); |
c3acb181 AE |
1143 | return -ENODEV; |
1144 | } | |
1145 | ||
5aea3dcd | 1146 | peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; |
c3acb181 AE |
1147 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && |
1148 | !ceph_con_opened(&osd->o_con)) { | |
5aea3dcd | 1149 | struct rb_node *n; |
c3acb181 | 1150 | |
0b4af2e8 ID |
1151 | dout("osd addr hasn't changed and connection never opened, " |
1152 | "letting msgr retry\n"); | |
87b315a5 | 1153 | /* touch each r_stamp for handle_timeout()'s benfit */ |
5aea3dcd ID |
1154 | for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { |
1155 | struct ceph_osd_request *req = | |
1156 | rb_entry(n, struct ceph_osd_request, r_node); | |
87b315a5 | 1157 | req->r_stamp = jiffies; |
5aea3dcd | 1158 | } |
c3acb181 AE |
1159 | |
1160 | return -EAGAIN; | |
f24e9980 | 1161 | } |
c3acb181 AE |
1162 | |
1163 | ceph_con_close(&osd->o_con); | |
1164 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
1165 | osd->o_incarnation++; | |
1166 | ||
1167 | return 0; | |
f24e9980 SW |
1168 | } |
1169 | ||
5aea3dcd ID |
1170 | static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, |
1171 | bool wrlocked) | |
f24e9980 | 1172 | { |
5aea3dcd | 1173 | struct ceph_osd *osd; |
35f9f8a0 | 1174 | |
5aea3dcd ID |
1175 | if (wrlocked) |
1176 | verify_osdc_wrlocked(osdc); | |
1177 | else | |
1178 | verify_osdc_locked(osdc); | |
f24e9980 | 1179 | |
5aea3dcd ID |
1180 | if (o != CEPH_HOMELESS_OSD) |
1181 | osd = lookup_osd(&osdc->osds, o); | |
1182 | else | |
1183 | osd = &osdc->homeless_osd; | |
1184 | if (!osd) { | |
1185 | if (!wrlocked) | |
1186 | return ERR_PTR(-EAGAIN); | |
0ba6478d | 1187 | |
5aea3dcd ID |
1188 | osd = create_osd(osdc, o); |
1189 | insert_osd(&osdc->osds, osd); | |
1190 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, | |
1191 | &osdc->osdmap->osd_addr[osd->o_osd]); | |
0ba6478d | 1192 | } |
f24e9980 | 1193 | |
5aea3dcd ID |
1194 | dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); |
1195 | return osd; | |
f24e9980 SW |
1196 | } |
1197 | ||
1198 | /* | |
5aea3dcd ID |
1199 | * Create request <-> OSD session relation. |
1200 | * | |
1201 | * @req has to be assigned a tid, @osd may be homeless. | |
f24e9980 | 1202 | */ |
5aea3dcd | 1203 | static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) |
f24e9980 | 1204 | { |
5aea3dcd ID |
1205 | verify_osd_locked(osd); |
1206 | WARN_ON(!req->r_tid || req->r_osd); | |
1207 | dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, | |
1208 | req, req->r_tid); | |
1209 | ||
1210 | if (!osd_homeless(osd)) | |
1211 | __remove_osd_from_lru(osd); | |
1212 | else | |
1213 | atomic_inc(&osd->o_osdc->num_homeless); | |
1214 | ||
1215 | get_osd(osd); | |
1216 | insert_request(&osd->o_requests, req); | |
1217 | req->r_osd = osd; | |
f24e9980 SW |
1218 | } |
1219 | ||
5aea3dcd ID |
1220 | static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) |
1221 | { | |
1222 | verify_osd_locked(osd); | |
1223 | WARN_ON(req->r_osd != osd); | |
1224 | dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, | |
1225 | req, req->r_tid); | |
1226 | ||
1227 | req->r_osd = NULL; | |
1228 | erase_request(&osd->o_requests, req); | |
1229 | put_osd(osd); | |
1230 | ||
1231 | if (!osd_homeless(osd)) | |
1232 | maybe_move_osd_to_lru(osd); | |
1233 | else | |
1234 | atomic_dec(&osd->o_osdc->num_homeless); | |
1235 | } | |
1236 | ||
63244fa1 ID |
1237 | static bool __pool_full(struct ceph_pg_pool_info *pi) |
1238 | { | |
1239 | return pi->flags & CEPH_POOL_FLAG_FULL; | |
1240 | } | |
1241 | ||
42c1b124 ID |
1242 | static bool have_pool_full(struct ceph_osd_client *osdc) |
1243 | { | |
1244 | struct rb_node *n; | |
1245 | ||
1246 | for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { | |
1247 | struct ceph_pg_pool_info *pi = | |
1248 | rb_entry(n, struct ceph_pg_pool_info, node); | |
1249 | ||
1250 | if (__pool_full(pi)) | |
1251 | return true; | |
1252 | } | |
1253 | ||
1254 | return false; | |
1255 | } | |
1256 | ||
5aea3dcd ID |
1257 | static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) |
1258 | { | |
1259 | struct ceph_pg_pool_info *pi; | |
1260 | ||
1261 | pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); | |
1262 | if (!pi) | |
1263 | return false; | |
1264 | ||
1265 | return __pool_full(pi); | |
1266 | } | |
1267 | ||
d29adb34 JD |
1268 | /* |
1269 | * Returns whether a request should be blocked from being sent | |
1270 | * based on the current osdmap and osd_client settings. | |
d29adb34 | 1271 | */ |
63244fa1 ID |
1272 | static bool target_should_be_paused(struct ceph_osd_client *osdc, |
1273 | const struct ceph_osd_request_target *t, | |
1274 | struct ceph_pg_pool_info *pi) | |
1275 | { | |
1276 | bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); | |
1277 | bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || | |
1278 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || | |
1279 | __pool_full(pi); | |
1280 | ||
1281 | WARN_ON(pi->id != t->base_oloc.pool); | |
1282 | return (t->flags & CEPH_OSD_FLAG_READ && pauserd) || | |
1283 | (t->flags & CEPH_OSD_FLAG_WRITE && pausewr); | |
1284 | } | |
1285 | ||
63244fa1 ID |
1286 | enum calc_target_result { |
1287 | CALC_TARGET_NO_ACTION = 0, | |
1288 | CALC_TARGET_NEED_RESEND, | |
1289 | CALC_TARGET_POOL_DNE, | |
1290 | }; | |
1291 | ||
1292 | static enum calc_target_result calc_target(struct ceph_osd_client *osdc, | |
1293 | struct ceph_osd_request_target *t, | |
1294 | u32 *last_force_resend, | |
1295 | bool any_change) | |
1296 | { | |
1297 | struct ceph_pg_pool_info *pi; | |
1298 | struct ceph_pg pgid, last_pgid; | |
1299 | struct ceph_osds up, acting; | |
1300 | bool force_resend = false; | |
1301 | bool need_check_tiering = false; | |
1302 | bool need_resend = false; | |
1303 | bool sort_bitwise = ceph_osdmap_flag(osdc->osdmap, | |
1304 | CEPH_OSDMAP_SORTBITWISE); | |
1305 | enum calc_target_result ct_res; | |
1306 | int ret; | |
1307 | ||
1308 | pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); | |
1309 | if (!pi) { | |
1310 | t->osd = CEPH_HOMELESS_OSD; | |
1311 | ct_res = CALC_TARGET_POOL_DNE; | |
1312 | goto out; | |
1313 | } | |
1314 | ||
1315 | if (osdc->osdmap->epoch == pi->last_force_request_resend) { | |
1316 | if (last_force_resend && | |
1317 | *last_force_resend < pi->last_force_request_resend) { | |
1318 | *last_force_resend = pi->last_force_request_resend; | |
1319 | force_resend = true; | |
1320 | } else if (!last_force_resend) { | |
1321 | force_resend = true; | |
1322 | } | |
1323 | } | |
1324 | if (ceph_oid_empty(&t->target_oid) || force_resend) { | |
1325 | ceph_oid_copy(&t->target_oid, &t->base_oid); | |
1326 | need_check_tiering = true; | |
1327 | } | |
1328 | if (ceph_oloc_empty(&t->target_oloc) || force_resend) { | |
1329 | ceph_oloc_copy(&t->target_oloc, &t->base_oloc); | |
1330 | need_check_tiering = true; | |
1331 | } | |
1332 | ||
1333 | if (need_check_tiering && | |
1334 | (t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { | |
1335 | if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) | |
1336 | t->target_oloc.pool = pi->read_tier; | |
1337 | if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) | |
1338 | t->target_oloc.pool = pi->write_tier; | |
1339 | } | |
1340 | ||
1341 | ret = ceph_object_locator_to_pg(osdc->osdmap, &t->target_oid, | |
1342 | &t->target_oloc, &pgid); | |
1343 | if (ret) { | |
1344 | WARN_ON(ret != -ENOENT); | |
1345 | t->osd = CEPH_HOMELESS_OSD; | |
1346 | ct_res = CALC_TARGET_POOL_DNE; | |
1347 | goto out; | |
1348 | } | |
1349 | last_pgid.pool = pgid.pool; | |
1350 | last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); | |
1351 | ||
1352 | ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting); | |
1353 | if (any_change && | |
1354 | ceph_is_new_interval(&t->acting, | |
1355 | &acting, | |
1356 | &t->up, | |
1357 | &up, | |
1358 | t->size, | |
1359 | pi->size, | |
1360 | t->min_size, | |
1361 | pi->min_size, | |
1362 | t->pg_num, | |
1363 | pi->pg_num, | |
1364 | t->sort_bitwise, | |
1365 | sort_bitwise, | |
1366 | &last_pgid)) | |
1367 | force_resend = true; | |
1368 | ||
1369 | if (t->paused && !target_should_be_paused(osdc, t, pi)) { | |
1370 | t->paused = false; | |
1371 | need_resend = true; | |
1372 | } | |
1373 | ||
1374 | if (ceph_pg_compare(&t->pgid, &pgid) || | |
1375 | ceph_osds_changed(&t->acting, &acting, any_change) || | |
1376 | force_resend) { | |
1377 | t->pgid = pgid; /* struct */ | |
1378 | ceph_osds_copy(&t->acting, &acting); | |
1379 | ceph_osds_copy(&t->up, &up); | |
1380 | t->size = pi->size; | |
1381 | t->min_size = pi->min_size; | |
1382 | t->pg_num = pi->pg_num; | |
1383 | t->pg_num_mask = pi->pg_num_mask; | |
1384 | t->sort_bitwise = sort_bitwise; | |
1385 | ||
1386 | t->osd = acting.primary; | |
1387 | need_resend = true; | |
1388 | } | |
1389 | ||
1390 | ct_res = need_resend ? CALC_TARGET_NEED_RESEND : CALC_TARGET_NO_ACTION; | |
1391 | out: | |
1392 | dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); | |
1393 | return ct_res; | |
1394 | } | |
1395 | ||
bb873b53 ID |
1396 | static void setup_request_data(struct ceph_osd_request *req, |
1397 | struct ceph_msg *msg) | |
f24e9980 | 1398 | { |
bb873b53 ID |
1399 | u32 data_len = 0; |
1400 | int i; | |
1401 | ||
1402 | if (!list_empty(&msg->data)) | |
1403 | return; | |
f24e9980 | 1404 | |
bb873b53 ID |
1405 | WARN_ON(msg->data_length); |
1406 | for (i = 0; i < req->r_num_ops; i++) { | |
1407 | struct ceph_osd_req_op *op = &req->r_ops[i]; | |
1408 | ||
1409 | switch (op->op) { | |
1410 | /* request */ | |
1411 | case CEPH_OSD_OP_WRITE: | |
1412 | case CEPH_OSD_OP_WRITEFULL: | |
1413 | WARN_ON(op->indata_len != op->extent.length); | |
1414 | ceph_osdc_msg_data_add(msg, &op->extent.osd_data); | |
1415 | break; | |
1416 | case CEPH_OSD_OP_SETXATTR: | |
1417 | case CEPH_OSD_OP_CMPXATTR: | |
1418 | WARN_ON(op->indata_len != op->xattr.name_len + | |
1419 | op->xattr.value_len); | |
1420 | ceph_osdc_msg_data_add(msg, &op->xattr.osd_data); | |
1421 | break; | |
922dab61 ID |
1422 | case CEPH_OSD_OP_NOTIFY_ACK: |
1423 | ceph_osdc_msg_data_add(msg, | |
1424 | &op->notify_ack.request_data); | |
1425 | break; | |
bb873b53 ID |
1426 | |
1427 | /* reply */ | |
1428 | case CEPH_OSD_OP_STAT: | |
1429 | ceph_osdc_msg_data_add(req->r_reply, | |
1430 | &op->raw_data_in); | |
1431 | break; | |
1432 | case CEPH_OSD_OP_READ: | |
1433 | ceph_osdc_msg_data_add(req->r_reply, | |
1434 | &op->extent.osd_data); | |
1435 | break; | |
1436 | ||
1437 | /* both */ | |
1438 | case CEPH_OSD_OP_CALL: | |
1439 | WARN_ON(op->indata_len != op->cls.class_len + | |
1440 | op->cls.method_len + | |
1441 | op->cls.indata_len); | |
1442 | ceph_osdc_msg_data_add(msg, &op->cls.request_info); | |
1443 | /* optional, can be NONE */ | |
1444 | ceph_osdc_msg_data_add(msg, &op->cls.request_data); | |
1445 | /* optional, can be NONE */ | |
1446 | ceph_osdc_msg_data_add(req->r_reply, | |
1447 | &op->cls.response_data); | |
1448 | break; | |
19079203 ID |
1449 | case CEPH_OSD_OP_NOTIFY: |
1450 | ceph_osdc_msg_data_add(msg, | |
1451 | &op->notify.request_data); | |
1452 | ceph_osdc_msg_data_add(req->r_reply, | |
1453 | &op->notify.response_data); | |
1454 | break; | |
bb873b53 ID |
1455 | } |
1456 | ||
1457 | data_len += op->indata_len; | |
1458 | } | |
1b83bef2 | 1459 | |
bb873b53 ID |
1460 | WARN_ON(data_len != msg->data_length); |
1461 | } | |
1462 | ||
1463 | static void encode_request(struct ceph_osd_request *req, struct ceph_msg *msg) | |
1464 | { | |
1465 | void *p = msg->front.iov_base; | |
1466 | void *const end = p + msg->front_alloc_len; | |
1467 | u32 data_len = 0; | |
1468 | int i; | |
1469 | ||
1470 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) { | |
1471 | /* snapshots aren't writeable */ | |
1472 | WARN_ON(req->r_snapid != CEPH_NOSNAP); | |
1473 | } else { | |
1474 | WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || | |
1475 | req->r_data_offset || req->r_snapc); | |
1476 | } | |
1477 | ||
1478 | setup_request_data(req, msg); | |
1479 | ||
1480 | ceph_encode_32(&p, 1); /* client_inc, always 1 */ | |
1481 | ceph_encode_32(&p, req->r_osdc->osdmap->epoch); | |
1482 | ceph_encode_32(&p, req->r_flags); | |
1483 | ceph_encode_timespec(p, &req->r_mtime); | |
1484 | p += sizeof(struct ceph_timespec); | |
1485 | /* aka reassert_version */ | |
1486 | memcpy(p, &req->r_replay_version, sizeof(req->r_replay_version)); | |
1487 | p += sizeof(req->r_replay_version); | |
1488 | ||
1489 | /* oloc */ | |
1490 | ceph_encode_8(&p, 4); | |
1491 | ceph_encode_8(&p, 4); | |
1492 | ceph_encode_32(&p, 8 + 4 + 4); | |
1493 | ceph_encode_64(&p, req->r_t.target_oloc.pool); | |
1494 | ceph_encode_32(&p, -1); /* preferred */ | |
1495 | ceph_encode_32(&p, 0); /* key len */ | |
1496 | ||
1497 | /* pgid */ | |
1498 | ceph_encode_8(&p, 1); | |
a66dd383 ID |
1499 | ceph_encode_64(&p, req->r_t.pgid.pool); |
1500 | ceph_encode_32(&p, req->r_t.pgid.seed); | |
bb873b53 | 1501 | ceph_encode_32(&p, -1); /* preferred */ |
2169aea6 | 1502 | |
bb873b53 ID |
1503 | /* oid */ |
1504 | ceph_encode_32(&p, req->r_t.target_oid.name_len); | |
1505 | memcpy(p, req->r_t.target_oid.name, req->r_t.target_oid.name_len); | |
1506 | p += req->r_t.target_oid.name_len; | |
f24e9980 | 1507 | |
bb873b53 ID |
1508 | /* ops, can imply data */ |
1509 | ceph_encode_16(&p, req->r_num_ops); | |
1510 | for (i = 0; i < req->r_num_ops; i++) { | |
1511 | data_len += osd_req_encode_op(p, &req->r_ops[i]); | |
1512 | p += sizeof(struct ceph_osd_op); | |
1513 | } | |
26be8808 | 1514 | |
bb873b53 ID |
1515 | ceph_encode_64(&p, req->r_snapid); /* snapid */ |
1516 | if (req->r_snapc) { | |
1517 | ceph_encode_64(&p, req->r_snapc->seq); | |
1518 | ceph_encode_32(&p, req->r_snapc->num_snaps); | |
1519 | for (i = 0; i < req->r_snapc->num_snaps; i++) | |
1520 | ceph_encode_64(&p, req->r_snapc->snaps[i]); | |
1521 | } else { | |
1522 | ceph_encode_64(&p, 0); /* snap_seq */ | |
1523 | ceph_encode_32(&p, 0); /* snaps len */ | |
1524 | } | |
1525 | ||
1526 | ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ | |
1527 | ||
1528 | BUG_ON(p > end); | |
1529 | msg->front.iov_len = p - msg->front.iov_base; | |
1530 | msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ | |
1531 | msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); | |
1532 | msg->hdr.data_len = cpu_to_le32(data_len); | |
1533 | /* | |
1534 | * The header "data_off" is a hint to the receiver allowing it | |
1535 | * to align received data into its buffers such that there's no | |
1536 | * need to re-copy it before writing it to disk (direct I/O). | |
1537 | */ | |
1538 | msg->hdr.data_off = cpu_to_le16(req->r_data_offset); | |
26be8808 | 1539 | |
bb873b53 ID |
1540 | dout("%s req %p oid %*pE oid_len %d front %zu data %u\n", __func__, |
1541 | req, req->r_t.target_oid.name_len, req->r_t.target_oid.name, | |
1542 | req->r_t.target_oid.name_len, msg->front.iov_len, data_len); | |
1543 | } | |
1544 | ||
1545 | /* | |
1546 | * @req has to be assigned a tid and registered. | |
1547 | */ | |
1548 | static void send_request(struct ceph_osd_request *req) | |
1549 | { | |
1550 | struct ceph_osd *osd = req->r_osd; | |
1551 | ||
5aea3dcd | 1552 | verify_osd_locked(osd); |
bb873b53 ID |
1553 | WARN_ON(osd->o_osd != req->r_t.osd); |
1554 | ||
5aea3dcd ID |
1555 | /* |
1556 | * We may have a previously queued request message hanging | |
1557 | * around. Cancel it to avoid corrupting the msgr. | |
1558 | */ | |
1559 | if (req->r_sent) | |
1560 | ceph_msg_revoke(req->r_request); | |
1561 | ||
bb873b53 ID |
1562 | req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; |
1563 | if (req->r_attempts) | |
1564 | req->r_flags |= CEPH_OSD_FLAG_RETRY; | |
1565 | else | |
1566 | WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); | |
1567 | ||
1568 | encode_request(req, req->r_request); | |
1569 | ||
1570 | dout("%s req %p tid %llu to pg %llu.%x osd%d flags 0x%x attempt %d\n", | |
1571 | __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, | |
1572 | req->r_t.osd, req->r_flags, req->r_attempts); | |
1573 | ||
1574 | req->r_t.paused = false; | |
1575 | req->r_stamp = jiffies; | |
1576 | req->r_attempts++; | |
1577 | ||
1578 | req->r_sent = osd->o_incarnation; | |
1579 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); | |
1580 | ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); | |
f24e9980 SW |
1581 | } |
1582 | ||
42c1b124 ID |
1583 | static void maybe_request_map(struct ceph_osd_client *osdc) |
1584 | { | |
1585 | bool continuous = false; | |
1586 | ||
5aea3dcd | 1587 | verify_osdc_locked(osdc); |
42c1b124 ID |
1588 | WARN_ON(!osdc->osdmap->epoch); |
1589 | ||
1590 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || | |
1591 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || | |
1592 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) { | |
1593 | dout("%s osdc %p continuous\n", __func__, osdc); | |
1594 | continuous = true; | |
1595 | } else { | |
1596 | dout("%s osdc %p onetime\n", __func__, osdc); | |
1597 | } | |
1598 | ||
1599 | if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, | |
1600 | osdc->osdmap->epoch + 1, continuous)) | |
1601 | ceph_monc_renew_subs(&osdc->client->monc); | |
1602 | } | |
1603 | ||
5aea3dcd | 1604 | static void __submit_request(struct ceph_osd_request *req, bool wrlocked) |
0bbfdfe8 | 1605 | { |
5aea3dcd ID |
1606 | struct ceph_osd_client *osdc = req->r_osdc; |
1607 | struct ceph_osd *osd; | |
1608 | bool need_send = false; | |
1609 | bool promoted = false; | |
0bbfdfe8 | 1610 | |
5aea3dcd ID |
1611 | WARN_ON(req->r_tid || req->r_got_reply); |
1612 | dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); | |
1613 | ||
1614 | again: | |
1615 | calc_target(osdc, &req->r_t, &req->r_last_force_resend, false); | |
1616 | osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); | |
1617 | if (IS_ERR(osd)) { | |
1618 | WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); | |
1619 | goto promote; | |
0bbfdfe8 ID |
1620 | } |
1621 | ||
5aea3dcd ID |
1622 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && |
1623 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) { | |
1624 | dout("req %p pausewr\n", req); | |
1625 | req->r_t.paused = true; | |
1626 | maybe_request_map(osdc); | |
1627 | } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && | |
1628 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD)) { | |
1629 | dout("req %p pauserd\n", req); | |
1630 | req->r_t.paused = true; | |
1631 | maybe_request_map(osdc); | |
1632 | } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && | |
1633 | !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | | |
1634 | CEPH_OSD_FLAG_FULL_FORCE)) && | |
1635 | (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || | |
1636 | pool_full(osdc, req->r_t.base_oloc.pool))) { | |
1637 | dout("req %p full/pool_full\n", req); | |
1638 | pr_warn_ratelimited("FULL or reached pool quota\n"); | |
1639 | req->r_t.paused = true; | |
1640 | maybe_request_map(osdc); | |
1641 | } else if (!osd_homeless(osd)) { | |
1642 | need_send = true; | |
0bbfdfe8 | 1643 | } else { |
5aea3dcd | 1644 | maybe_request_map(osdc); |
0bbfdfe8 ID |
1645 | } |
1646 | ||
5aea3dcd ID |
1647 | mutex_lock(&osd->lock); |
1648 | /* | |
1649 | * Assign the tid atomically with send_request() to protect | |
1650 | * multiple writes to the same object from racing with each | |
1651 | * other, resulting in out of order ops on the OSDs. | |
1652 | */ | |
1653 | req->r_tid = atomic64_inc_return(&osdc->last_tid); | |
1654 | link_request(osd, req); | |
1655 | if (need_send) | |
1656 | send_request(req); | |
1657 | mutex_unlock(&osd->lock); | |
1658 | ||
1659 | if (promoted) | |
1660 | downgrade_write(&osdc->lock); | |
1661 | return; | |
1662 | ||
1663 | promote: | |
1664 | up_read(&osdc->lock); | |
1665 | down_write(&osdc->lock); | |
1666 | wrlocked = true; | |
1667 | promoted = true; | |
1668 | goto again; | |
1669 | } | |
1670 | ||
1671 | static void account_request(struct ceph_osd_request *req) | |
1672 | { | |
1673 | unsigned int mask = CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK; | |
1674 | ||
1675 | if (req->r_flags & CEPH_OSD_FLAG_READ) { | |
1676 | WARN_ON(req->r_flags & mask); | |
1677 | req->r_flags |= CEPH_OSD_FLAG_ACK; | |
1678 | } else if (req->r_flags & CEPH_OSD_FLAG_WRITE) | |
1679 | WARN_ON(!(req->r_flags & mask)); | |
1680 | else | |
1681 | WARN_ON(1); | |
1682 | ||
1683 | WARN_ON(req->r_unsafe_callback && (req->r_flags & mask) != mask); | |
1684 | atomic_inc(&req->r_osdc->num_requests); | |
1685 | } | |
1686 | ||
1687 | static void submit_request(struct ceph_osd_request *req, bool wrlocked) | |
1688 | { | |
1689 | ceph_osdc_get_request(req); | |
1690 | account_request(req); | |
1691 | __submit_request(req, wrlocked); | |
1692 | } | |
1693 | ||
1694 | static void __finish_request(struct ceph_osd_request *req) | |
1695 | { | |
1696 | struct ceph_osd_client *osdc = req->r_osdc; | |
1697 | struct ceph_osd *osd = req->r_osd; | |
1698 | ||
1699 | verify_osd_locked(osd); | |
1700 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); | |
1701 | ||
1702 | unlink_request(osd, req); | |
1703 | atomic_dec(&osdc->num_requests); | |
1704 | ||
1705 | /* | |
1706 | * If an OSD has failed or returned and a request has been sent | |
1707 | * twice, it's possible to get a reply and end up here while the | |
1708 | * request message is queued for delivery. We will ignore the | |
1709 | * reply, so not a big deal, but better to try and catch it. | |
1710 | */ | |
1711 | ceph_msg_revoke(req->r_request); | |
1712 | ceph_msg_revoke_incoming(req->r_reply); | |
1713 | } | |
1714 | ||
1715 | static void finish_request(struct ceph_osd_request *req) | |
1716 | { | |
1717 | __finish_request(req); | |
1718 | ceph_osdc_put_request(req); | |
0bbfdfe8 ID |
1719 | } |
1720 | ||
fe5da05e ID |
1721 | static void __complete_request(struct ceph_osd_request *req) |
1722 | { | |
1723 | if (req->r_callback) | |
1724 | req->r_callback(req); | |
1725 | else | |
1726 | complete_all(&req->r_completion); | |
1727 | } | |
1728 | ||
5aea3dcd ID |
1729 | static void cancel_request(struct ceph_osd_request *req) |
1730 | { | |
1731 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); | |
1732 | ||
1733 | finish_request(req); | |
1734 | } | |
1735 | ||
922dab61 ID |
1736 | /* |
1737 | * lingering requests, watch/notify v2 infrastructure | |
1738 | */ | |
1739 | static void linger_release(struct kref *kref) | |
1740 | { | |
1741 | struct ceph_osd_linger_request *lreq = | |
1742 | container_of(kref, struct ceph_osd_linger_request, kref); | |
1743 | ||
1744 | dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, | |
1745 | lreq->reg_req, lreq->ping_req); | |
1746 | WARN_ON(!RB_EMPTY_NODE(&lreq->node)); | |
1747 | WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); | |
1748 | WARN_ON(!list_empty(&lreq->scan_item)); | |
b07d3c4b | 1749 | WARN_ON(!list_empty(&lreq->pending_lworks)); |
922dab61 ID |
1750 | WARN_ON(lreq->osd); |
1751 | ||
1752 | if (lreq->reg_req) | |
1753 | ceph_osdc_put_request(lreq->reg_req); | |
1754 | if (lreq->ping_req) | |
1755 | ceph_osdc_put_request(lreq->ping_req); | |
1756 | target_destroy(&lreq->t); | |
1757 | kfree(lreq); | |
1758 | } | |
1759 | ||
1760 | static void linger_put(struct ceph_osd_linger_request *lreq) | |
1761 | { | |
1762 | if (lreq) | |
1763 | kref_put(&lreq->kref, linger_release); | |
1764 | } | |
1765 | ||
1766 | static struct ceph_osd_linger_request * | |
1767 | linger_get(struct ceph_osd_linger_request *lreq) | |
1768 | { | |
1769 | kref_get(&lreq->kref); | |
1770 | return lreq; | |
1771 | } | |
1772 | ||
1773 | static struct ceph_osd_linger_request * | |
1774 | linger_alloc(struct ceph_osd_client *osdc) | |
1775 | { | |
1776 | struct ceph_osd_linger_request *lreq; | |
1777 | ||
1778 | lreq = kzalloc(sizeof(*lreq), GFP_NOIO); | |
1779 | if (!lreq) | |
1780 | return NULL; | |
1781 | ||
1782 | kref_init(&lreq->kref); | |
1783 | mutex_init(&lreq->lock); | |
1784 | RB_CLEAR_NODE(&lreq->node); | |
1785 | RB_CLEAR_NODE(&lreq->osdc_node); | |
1786 | INIT_LIST_HEAD(&lreq->scan_item); | |
b07d3c4b | 1787 | INIT_LIST_HEAD(&lreq->pending_lworks); |
922dab61 | 1788 | init_completion(&lreq->reg_commit_wait); |
19079203 | 1789 | init_completion(&lreq->notify_finish_wait); |
922dab61 ID |
1790 | |
1791 | lreq->osdc = osdc; | |
1792 | target_init(&lreq->t); | |
1793 | ||
1794 | dout("%s lreq %p\n", __func__, lreq); | |
1795 | return lreq; | |
1796 | } | |
1797 | ||
1798 | DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) | |
1799 | DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) | |
1800 | ||
1801 | /* | |
1802 | * Create linger request <-> OSD session relation. | |
1803 | * | |
1804 | * @lreq has to be registered, @osd may be homeless. | |
1805 | */ | |
1806 | static void link_linger(struct ceph_osd *osd, | |
1807 | struct ceph_osd_linger_request *lreq) | |
1808 | { | |
1809 | verify_osd_locked(osd); | |
1810 | WARN_ON(!lreq->linger_id || lreq->osd); | |
1811 | dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, | |
1812 | osd->o_osd, lreq, lreq->linger_id); | |
1813 | ||
1814 | if (!osd_homeless(osd)) | |
1815 | __remove_osd_from_lru(osd); | |
1816 | else | |
1817 | atomic_inc(&osd->o_osdc->num_homeless); | |
1818 | ||
1819 | get_osd(osd); | |
1820 | insert_linger(&osd->o_linger_requests, lreq); | |
1821 | lreq->osd = osd; | |
1822 | } | |
1823 | ||
1824 | static void unlink_linger(struct ceph_osd *osd, | |
1825 | struct ceph_osd_linger_request *lreq) | |
1826 | { | |
1827 | verify_osd_locked(osd); | |
1828 | WARN_ON(lreq->osd != osd); | |
1829 | dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, | |
1830 | osd->o_osd, lreq, lreq->linger_id); | |
1831 | ||
1832 | lreq->osd = NULL; | |
1833 | erase_linger(&osd->o_linger_requests, lreq); | |
1834 | put_osd(osd); | |
1835 | ||
1836 | if (!osd_homeless(osd)) | |
1837 | maybe_move_osd_to_lru(osd); | |
1838 | else | |
1839 | atomic_dec(&osd->o_osdc->num_homeless); | |
1840 | } | |
1841 | ||
1842 | static bool __linger_registered(struct ceph_osd_linger_request *lreq) | |
1843 | { | |
1844 | verify_osdc_locked(lreq->osdc); | |
1845 | ||
1846 | return !RB_EMPTY_NODE(&lreq->osdc_node); | |
1847 | } | |
1848 | ||
1849 | static bool linger_registered(struct ceph_osd_linger_request *lreq) | |
1850 | { | |
1851 | struct ceph_osd_client *osdc = lreq->osdc; | |
1852 | bool registered; | |
1853 | ||
1854 | down_read(&osdc->lock); | |
1855 | registered = __linger_registered(lreq); | |
1856 | up_read(&osdc->lock); | |
1857 | ||
1858 | return registered; | |
1859 | } | |
1860 | ||
1861 | static void linger_register(struct ceph_osd_linger_request *lreq) | |
1862 | { | |
1863 | struct ceph_osd_client *osdc = lreq->osdc; | |
1864 | ||
1865 | verify_osdc_wrlocked(osdc); | |
1866 | WARN_ON(lreq->linger_id); | |
1867 | ||
1868 | linger_get(lreq); | |
1869 | lreq->linger_id = ++osdc->last_linger_id; | |
1870 | insert_linger_osdc(&osdc->linger_requests, lreq); | |
1871 | } | |
1872 | ||
1873 | static void linger_unregister(struct ceph_osd_linger_request *lreq) | |
1874 | { | |
1875 | struct ceph_osd_client *osdc = lreq->osdc; | |
1876 | ||
1877 | verify_osdc_wrlocked(osdc); | |
1878 | ||
1879 | erase_linger_osdc(&osdc->linger_requests, lreq); | |
1880 | linger_put(lreq); | |
1881 | } | |
1882 | ||
1883 | static void cancel_linger_request(struct ceph_osd_request *req) | |
1884 | { | |
1885 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
1886 | ||
1887 | WARN_ON(!req->r_linger); | |
1888 | cancel_request(req); | |
1889 | linger_put(lreq); | |
1890 | } | |
1891 | ||
1892 | struct linger_work { | |
1893 | struct work_struct work; | |
1894 | struct ceph_osd_linger_request *lreq; | |
b07d3c4b ID |
1895 | struct list_head pending_item; |
1896 | unsigned long queued_stamp; | |
922dab61 ID |
1897 | |
1898 | union { | |
1899 | struct { | |
1900 | u64 notify_id; | |
1901 | u64 notifier_id; | |
1902 | void *payload; /* points into @msg front */ | |
1903 | size_t payload_len; | |
1904 | ||
1905 | struct ceph_msg *msg; /* for ceph_msg_put() */ | |
1906 | } notify; | |
1907 | struct { | |
1908 | int err; | |
1909 | } error; | |
1910 | }; | |
1911 | }; | |
1912 | ||
1913 | static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, | |
1914 | work_func_t workfn) | |
1915 | { | |
1916 | struct linger_work *lwork; | |
1917 | ||
1918 | lwork = kzalloc(sizeof(*lwork), GFP_NOIO); | |
1919 | if (!lwork) | |
1920 | return NULL; | |
1921 | ||
1922 | INIT_WORK(&lwork->work, workfn); | |
b07d3c4b | 1923 | INIT_LIST_HEAD(&lwork->pending_item); |
922dab61 ID |
1924 | lwork->lreq = linger_get(lreq); |
1925 | ||
1926 | return lwork; | |
1927 | } | |
1928 | ||
1929 | static void lwork_free(struct linger_work *lwork) | |
1930 | { | |
1931 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
1932 | ||
b07d3c4b ID |
1933 | mutex_lock(&lreq->lock); |
1934 | list_del(&lwork->pending_item); | |
1935 | mutex_unlock(&lreq->lock); | |
1936 | ||
922dab61 ID |
1937 | linger_put(lreq); |
1938 | kfree(lwork); | |
1939 | } | |
1940 | ||
1941 | static void lwork_queue(struct linger_work *lwork) | |
1942 | { | |
1943 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
1944 | struct ceph_osd_client *osdc = lreq->osdc; | |
1945 | ||
1946 | verify_lreq_locked(lreq); | |
b07d3c4b ID |
1947 | WARN_ON(!list_empty(&lwork->pending_item)); |
1948 | ||
1949 | lwork->queued_stamp = jiffies; | |
1950 | list_add_tail(&lwork->pending_item, &lreq->pending_lworks); | |
922dab61 ID |
1951 | queue_work(osdc->notify_wq, &lwork->work); |
1952 | } | |
1953 | ||
1954 | static void do_watch_notify(struct work_struct *w) | |
1955 | { | |
1956 | struct linger_work *lwork = container_of(w, struct linger_work, work); | |
1957 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
1958 | ||
1959 | if (!linger_registered(lreq)) { | |
1960 | dout("%s lreq %p not registered\n", __func__, lreq); | |
1961 | goto out; | |
1962 | } | |
1963 | ||
19079203 | 1964 | WARN_ON(!lreq->is_watch); |
922dab61 ID |
1965 | dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", |
1966 | __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, | |
1967 | lwork->notify.payload_len); | |
1968 | lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, | |
1969 | lwork->notify.notifier_id, lwork->notify.payload, | |
1970 | lwork->notify.payload_len); | |
1971 | ||
1972 | out: | |
1973 | ceph_msg_put(lwork->notify.msg); | |
1974 | lwork_free(lwork); | |
1975 | } | |
1976 | ||
1977 | static void do_watch_error(struct work_struct *w) | |
1978 | { | |
1979 | struct linger_work *lwork = container_of(w, struct linger_work, work); | |
1980 | struct ceph_osd_linger_request *lreq = lwork->lreq; | |
1981 | ||
1982 | if (!linger_registered(lreq)) { | |
1983 | dout("%s lreq %p not registered\n", __func__, lreq); | |
1984 | goto out; | |
1985 | } | |
1986 | ||
1987 | dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); | |
1988 | lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); | |
1989 | ||
1990 | out: | |
1991 | lwork_free(lwork); | |
1992 | } | |
1993 | ||
1994 | static void queue_watch_error(struct ceph_osd_linger_request *lreq) | |
1995 | { | |
1996 | struct linger_work *lwork; | |
1997 | ||
1998 | lwork = lwork_alloc(lreq, do_watch_error); | |
1999 | if (!lwork) { | |
2000 | pr_err("failed to allocate error-lwork\n"); | |
2001 | return; | |
2002 | } | |
2003 | ||
2004 | lwork->error.err = lreq->last_error; | |
2005 | lwork_queue(lwork); | |
2006 | } | |
2007 | ||
2008 | static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, | |
2009 | int result) | |
2010 | { | |
2011 | if (!completion_done(&lreq->reg_commit_wait)) { | |
2012 | lreq->reg_commit_error = (result <= 0 ? result : 0); | |
2013 | complete_all(&lreq->reg_commit_wait); | |
2014 | } | |
2015 | } | |
2016 | ||
2017 | static void linger_commit_cb(struct ceph_osd_request *req) | |
2018 | { | |
2019 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
2020 | ||
2021 | mutex_lock(&lreq->lock); | |
2022 | dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, | |
2023 | lreq->linger_id, req->r_result); | |
2024 | WARN_ON(!__linger_registered(lreq)); | |
2025 | linger_reg_commit_complete(lreq, req->r_result); | |
2026 | lreq->committed = true; | |
2027 | ||
19079203 ID |
2028 | if (!lreq->is_watch) { |
2029 | struct ceph_osd_data *osd_data = | |
2030 | osd_req_op_data(req, 0, notify, response_data); | |
2031 | void *p = page_address(osd_data->pages[0]); | |
2032 | ||
2033 | WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || | |
2034 | osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); | |
2035 | ||
2036 | /* make note of the notify_id */ | |
2037 | if (req->r_ops[0].outdata_len >= sizeof(u64)) { | |
2038 | lreq->notify_id = ceph_decode_64(&p); | |
2039 | dout("lreq %p notify_id %llu\n", lreq, | |
2040 | lreq->notify_id); | |
2041 | } else { | |
2042 | dout("lreq %p no notify_id\n", lreq); | |
2043 | } | |
2044 | } | |
2045 | ||
922dab61 ID |
2046 | mutex_unlock(&lreq->lock); |
2047 | linger_put(lreq); | |
2048 | } | |
2049 | ||
2050 | static int normalize_watch_error(int err) | |
2051 | { | |
2052 | /* | |
2053 | * Translate ENOENT -> ENOTCONN so that a delete->disconnection | |
2054 | * notification and a failure to reconnect because we raced with | |
2055 | * the delete appear the same to the user. | |
2056 | */ | |
2057 | if (err == -ENOENT) | |
2058 | err = -ENOTCONN; | |
2059 | ||
2060 | return err; | |
2061 | } | |
2062 | ||
2063 | static void linger_reconnect_cb(struct ceph_osd_request *req) | |
2064 | { | |
2065 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
2066 | ||
2067 | mutex_lock(&lreq->lock); | |
2068 | dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, | |
2069 | lreq, lreq->linger_id, req->r_result, lreq->last_error); | |
2070 | if (req->r_result < 0) { | |
2071 | if (!lreq->last_error) { | |
2072 | lreq->last_error = normalize_watch_error(req->r_result); | |
2073 | queue_watch_error(lreq); | |
2074 | } | |
2075 | } | |
2076 | ||
2077 | mutex_unlock(&lreq->lock); | |
2078 | linger_put(lreq); | |
2079 | } | |
2080 | ||
2081 | static void send_linger(struct ceph_osd_linger_request *lreq) | |
2082 | { | |
2083 | struct ceph_osd_request *req = lreq->reg_req; | |
2084 | struct ceph_osd_req_op *op = &req->r_ops[0]; | |
2085 | ||
2086 | verify_osdc_wrlocked(req->r_osdc); | |
2087 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); | |
2088 | ||
2089 | if (req->r_osd) | |
2090 | cancel_linger_request(req); | |
2091 | ||
2092 | request_reinit(req); | |
2093 | ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); | |
2094 | ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); | |
2095 | req->r_flags = lreq->t.flags; | |
2096 | req->r_mtime = lreq->mtime; | |
2097 | ||
2098 | mutex_lock(&lreq->lock); | |
19079203 | 2099 | if (lreq->is_watch && lreq->committed) { |
922dab61 ID |
2100 | WARN_ON(op->op != CEPH_OSD_OP_WATCH || |
2101 | op->watch.cookie != lreq->linger_id); | |
2102 | op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; | |
2103 | op->watch.gen = ++lreq->register_gen; | |
2104 | dout("lreq %p reconnect register_gen %u\n", lreq, | |
2105 | op->watch.gen); | |
2106 | req->r_callback = linger_reconnect_cb; | |
2107 | } else { | |
19079203 ID |
2108 | if (!lreq->is_watch) |
2109 | lreq->notify_id = 0; | |
2110 | else | |
2111 | WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); | |
922dab61 ID |
2112 | dout("lreq %p register\n", lreq); |
2113 | req->r_callback = linger_commit_cb; | |
2114 | } | |
2115 | mutex_unlock(&lreq->lock); | |
2116 | ||
2117 | req->r_priv = linger_get(lreq); | |
2118 | req->r_linger = true; | |
2119 | ||
2120 | submit_request(req, true); | |
2121 | } | |
2122 | ||
2123 | static void linger_ping_cb(struct ceph_osd_request *req) | |
2124 | { | |
2125 | struct ceph_osd_linger_request *lreq = req->r_priv; | |
2126 | ||
2127 | mutex_lock(&lreq->lock); | |
2128 | dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", | |
2129 | __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, | |
2130 | lreq->last_error); | |
2131 | if (lreq->register_gen == req->r_ops[0].watch.gen) { | |
b07d3c4b ID |
2132 | if (!req->r_result) { |
2133 | lreq->watch_valid_thru = lreq->ping_sent; | |
2134 | } else if (!lreq->last_error) { | |
922dab61 ID |
2135 | lreq->last_error = normalize_watch_error(req->r_result); |
2136 | queue_watch_error(lreq); | |
2137 | } | |
2138 | } else { | |
2139 | dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, | |
2140 | lreq->register_gen, req->r_ops[0].watch.gen); | |
2141 | } | |
2142 | ||
2143 | mutex_unlock(&lreq->lock); | |
2144 | linger_put(lreq); | |
2145 | } | |
2146 | ||
2147 | static void send_linger_ping(struct ceph_osd_linger_request *lreq) | |
2148 | { | |
2149 | struct ceph_osd_client *osdc = lreq->osdc; | |
2150 | struct ceph_osd_request *req = lreq->ping_req; | |
2151 | struct ceph_osd_req_op *op = &req->r_ops[0]; | |
2152 | ||
2153 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD)) { | |
2154 | dout("%s PAUSERD\n", __func__); | |
2155 | return; | |
2156 | } | |
2157 | ||
2158 | lreq->ping_sent = jiffies; | |
2159 | dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", | |
2160 | __func__, lreq, lreq->linger_id, lreq->ping_sent, | |
2161 | lreq->register_gen); | |
2162 | ||
2163 | if (req->r_osd) | |
2164 | cancel_linger_request(req); | |
2165 | ||
2166 | request_reinit(req); | |
2167 | target_copy(&req->r_t, &lreq->t); | |
2168 | ||
2169 | WARN_ON(op->op != CEPH_OSD_OP_WATCH || | |
2170 | op->watch.cookie != lreq->linger_id || | |
2171 | op->watch.op != CEPH_OSD_WATCH_OP_PING); | |
2172 | op->watch.gen = lreq->register_gen; | |
2173 | req->r_callback = linger_ping_cb; | |
2174 | req->r_priv = linger_get(lreq); | |
2175 | req->r_linger = true; | |
2176 | ||
2177 | ceph_osdc_get_request(req); | |
2178 | account_request(req); | |
2179 | req->r_tid = atomic64_inc_return(&osdc->last_tid); | |
2180 | link_request(lreq->osd, req); | |
2181 | send_request(req); | |
2182 | } | |
2183 | ||
2184 | static void linger_submit(struct ceph_osd_linger_request *lreq) | |
2185 | { | |
2186 | struct ceph_osd_client *osdc = lreq->osdc; | |
2187 | struct ceph_osd *osd; | |
2188 | ||
2189 | calc_target(osdc, &lreq->t, &lreq->last_force_resend, false); | |
2190 | osd = lookup_create_osd(osdc, lreq->t.osd, true); | |
2191 | link_linger(osd, lreq); | |
2192 | ||
2193 | send_linger(lreq); | |
2194 | } | |
2195 | ||
2196 | /* | |
2197 | * @lreq has to be both registered and linked. | |
2198 | */ | |
2199 | static void __linger_cancel(struct ceph_osd_linger_request *lreq) | |
2200 | { | |
19079203 | 2201 | if (lreq->is_watch && lreq->ping_req->r_osd) |
922dab61 ID |
2202 | cancel_linger_request(lreq->ping_req); |
2203 | if (lreq->reg_req->r_osd) | |
2204 | cancel_linger_request(lreq->reg_req); | |
2205 | unlink_linger(lreq->osd, lreq); | |
2206 | linger_unregister(lreq); | |
2207 | } | |
2208 | ||
2209 | static void linger_cancel(struct ceph_osd_linger_request *lreq) | |
2210 | { | |
2211 | struct ceph_osd_client *osdc = lreq->osdc; | |
2212 | ||
2213 | down_write(&osdc->lock); | |
2214 | if (__linger_registered(lreq)) | |
2215 | __linger_cancel(lreq); | |
2216 | up_write(&osdc->lock); | |
2217 | } | |
2218 | ||
2219 | static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) | |
2220 | { | |
2221 | int ret; | |
2222 | ||
2223 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); | |
2224 | ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); | |
2225 | return ret ?: lreq->reg_commit_error; | |
2226 | } | |
2227 | ||
19079203 ID |
2228 | static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) |
2229 | { | |
2230 | int ret; | |
2231 | ||
2232 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); | |
2233 | ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); | |
2234 | return ret ?: lreq->notify_finish_error; | |
2235 | } | |
2236 | ||
f24e9980 | 2237 | /* |
fbca9635 ID |
2238 | * Timeout callback, called every N seconds. When 1 or more OSD |
2239 | * requests has been active for more than N seconds, we send a keepalive | |
2240 | * (tag + timestamp) to its OSD to ensure any communications channel | |
2241 | * reset is detected. | |
f24e9980 SW |
2242 | */ |
2243 | static void handle_timeout(struct work_struct *work) | |
2244 | { | |
2245 | struct ceph_osd_client *osdc = | |
2246 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
a319bf56 | 2247 | struct ceph_options *opts = osdc->client->options; |
5aea3dcd ID |
2248 | unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; |
2249 | LIST_HEAD(slow_osds); | |
2250 | struct rb_node *n, *p; | |
f24e9980 | 2251 | |
5aea3dcd ID |
2252 | dout("%s osdc %p\n", __func__, osdc); |
2253 | down_write(&osdc->lock); | |
f24e9980 | 2254 | |
422d2cb8 YS |
2255 | /* |
2256 | * ping osds that are a bit slow. this ensures that if there | |
2257 | * is a break in the TCP connection we will notice, and reopen | |
2258 | * a connection with that osd (from the fault callback). | |
2259 | */ | |
5aea3dcd ID |
2260 | for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { |
2261 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
2262 | bool found = false; | |
2263 | ||
2264 | for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { | |
2265 | struct ceph_osd_request *req = | |
2266 | rb_entry(p, struct ceph_osd_request, r_node); | |
2267 | ||
2268 | if (time_before(req->r_stamp, cutoff)) { | |
2269 | dout(" req %p tid %llu on osd%d is laggy\n", | |
2270 | req, req->r_tid, osd->o_osd); | |
2271 | found = true; | |
2272 | } | |
2273 | } | |
922dab61 ID |
2274 | for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { |
2275 | struct ceph_osd_linger_request *lreq = | |
2276 | rb_entry(p, struct ceph_osd_linger_request, node); | |
2277 | ||
2278 | dout(" lreq %p linger_id %llu is served by osd%d\n", | |
2279 | lreq, lreq->linger_id, osd->o_osd); | |
2280 | found = true; | |
2281 | ||
2282 | mutex_lock(&lreq->lock); | |
19079203 | 2283 | if (lreq->is_watch && lreq->committed && !lreq->last_error) |
922dab61 ID |
2284 | send_linger_ping(lreq); |
2285 | mutex_unlock(&lreq->lock); | |
2286 | } | |
422d2cb8 | 2287 | |
5aea3dcd ID |
2288 | if (found) |
2289 | list_move_tail(&osd->o_keepalive_item, &slow_osds); | |
422d2cb8 | 2290 | } |
5aea3dcd ID |
2291 | |
2292 | if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) | |
2293 | maybe_request_map(osdc); | |
2294 | ||
422d2cb8 | 2295 | while (!list_empty(&slow_osds)) { |
5aea3dcd ID |
2296 | struct ceph_osd *osd = list_first_entry(&slow_osds, |
2297 | struct ceph_osd, | |
2298 | o_keepalive_item); | |
422d2cb8 | 2299 | list_del_init(&osd->o_keepalive_item); |
f24e9980 SW |
2300 | ceph_con_keepalive(&osd->o_con); |
2301 | } | |
2302 | ||
5aea3dcd | 2303 | up_write(&osdc->lock); |
fbca9635 ID |
2304 | schedule_delayed_work(&osdc->timeout_work, |
2305 | osdc->client->options->osd_keepalive_timeout); | |
f24e9980 SW |
2306 | } |
2307 | ||
f5a2041b YS |
2308 | static void handle_osds_timeout(struct work_struct *work) |
2309 | { | |
2310 | struct ceph_osd_client *osdc = | |
2311 | container_of(work, struct ceph_osd_client, | |
2312 | osds_timeout_work.work); | |
a319bf56 | 2313 | unsigned long delay = osdc->client->options->osd_idle_ttl / 4; |
42a2c09f | 2314 | struct ceph_osd *osd, *nosd; |
f5a2041b | 2315 | |
42a2c09f | 2316 | dout("%s osdc %p\n", __func__, osdc); |
5aea3dcd | 2317 | down_write(&osdc->lock); |
42a2c09f ID |
2318 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { |
2319 | if (time_before(jiffies, osd->lru_ttl)) | |
2320 | break; | |
2321 | ||
5aea3dcd | 2322 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); |
922dab61 | 2323 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); |
5aea3dcd | 2324 | close_osd(osd); |
42a2c09f | 2325 | } |
f5a2041b | 2326 | |
5aea3dcd | 2327 | up_write(&osdc->lock); |
f5a2041b YS |
2328 | schedule_delayed_work(&osdc->osds_timeout_work, |
2329 | round_jiffies_relative(delay)); | |
2330 | } | |
2331 | ||
205ee118 ID |
2332 | static int ceph_oloc_decode(void **p, void *end, |
2333 | struct ceph_object_locator *oloc) | |
2334 | { | |
2335 | u8 struct_v, struct_cv; | |
2336 | u32 len; | |
2337 | void *struct_end; | |
2338 | int ret = 0; | |
2339 | ||
2340 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
2341 | struct_v = ceph_decode_8(p); | |
2342 | struct_cv = ceph_decode_8(p); | |
2343 | if (struct_v < 3) { | |
2344 | pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", | |
2345 | struct_v, struct_cv); | |
2346 | goto e_inval; | |
2347 | } | |
2348 | if (struct_cv > 6) { | |
2349 | pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", | |
2350 | struct_v, struct_cv); | |
2351 | goto e_inval; | |
2352 | } | |
2353 | len = ceph_decode_32(p); | |
2354 | ceph_decode_need(p, end, len, e_inval); | |
2355 | struct_end = *p + len; | |
2356 | ||
2357 | oloc->pool = ceph_decode_64(p); | |
2358 | *p += 4; /* skip preferred */ | |
2359 | ||
2360 | len = ceph_decode_32(p); | |
2361 | if (len > 0) { | |
2362 | pr_warn("ceph_object_locator::key is set\n"); | |
2363 | goto e_inval; | |
2364 | } | |
2365 | ||
2366 | if (struct_v >= 5) { | |
2367 | len = ceph_decode_32(p); | |
2368 | if (len > 0) { | |
2369 | pr_warn("ceph_object_locator::nspace is set\n"); | |
2370 | goto e_inval; | |
2371 | } | |
2372 | } | |
2373 | ||
2374 | if (struct_v >= 6) { | |
2375 | s64 hash = ceph_decode_64(p); | |
2376 | if (hash != -1) { | |
2377 | pr_warn("ceph_object_locator::hash is set\n"); | |
2378 | goto e_inval; | |
2379 | } | |
2380 | } | |
2381 | ||
2382 | /* skip the rest */ | |
2383 | *p = struct_end; | |
2384 | out: | |
2385 | return ret; | |
2386 | ||
2387 | e_inval: | |
2388 | ret = -EINVAL; | |
2389 | goto out; | |
2390 | } | |
2391 | ||
2392 | static int ceph_redirect_decode(void **p, void *end, | |
2393 | struct ceph_request_redirect *redir) | |
2394 | { | |
2395 | u8 struct_v, struct_cv; | |
2396 | u32 len; | |
2397 | void *struct_end; | |
2398 | int ret; | |
2399 | ||
2400 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
2401 | struct_v = ceph_decode_8(p); | |
2402 | struct_cv = ceph_decode_8(p); | |
2403 | if (struct_cv > 1) { | |
2404 | pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", | |
2405 | struct_v, struct_cv); | |
2406 | goto e_inval; | |
2407 | } | |
2408 | len = ceph_decode_32(p); | |
2409 | ceph_decode_need(p, end, len, e_inval); | |
2410 | struct_end = *p + len; | |
2411 | ||
2412 | ret = ceph_oloc_decode(p, end, &redir->oloc); | |
2413 | if (ret) | |
2414 | goto out; | |
2415 | ||
2416 | len = ceph_decode_32(p); | |
2417 | if (len > 0) { | |
2418 | pr_warn("ceph_request_redirect::object_name is set\n"); | |
2419 | goto e_inval; | |
2420 | } | |
2421 | ||
2422 | len = ceph_decode_32(p); | |
2423 | *p += len; /* skip osd_instructions */ | |
2424 | ||
2425 | /* skip the rest */ | |
2426 | *p = struct_end; | |
2427 | out: | |
2428 | return ret; | |
2429 | ||
2430 | e_inval: | |
2431 | ret = -EINVAL; | |
2432 | goto out; | |
2433 | } | |
2434 | ||
fe5da05e ID |
2435 | struct MOSDOpReply { |
2436 | struct ceph_pg pgid; | |
2437 | u64 flags; | |
2438 | int result; | |
2439 | u32 epoch; | |
2440 | int num_ops; | |
2441 | u32 outdata_len[CEPH_OSD_MAX_OPS]; | |
2442 | s32 rval[CEPH_OSD_MAX_OPS]; | |
2443 | int retry_attempt; | |
2444 | struct ceph_eversion replay_version; | |
2445 | u64 user_version; | |
2446 | struct ceph_request_redirect redirect; | |
2447 | }; | |
25845472 | 2448 | |
fe5da05e | 2449 | static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) |
f24e9980 | 2450 | { |
fe5da05e ID |
2451 | void *p = msg->front.iov_base; |
2452 | void *const end = p + msg->front.iov_len; | |
2453 | u16 version = le16_to_cpu(msg->hdr.version); | |
2454 | struct ceph_eversion bad_replay_version; | |
b0b31a8f | 2455 | u8 decode_redir; |
fe5da05e ID |
2456 | u32 len; |
2457 | int ret; | |
2458 | int i; | |
1b83bef2 | 2459 | |
fe5da05e ID |
2460 | ceph_decode_32_safe(&p, end, len, e_inval); |
2461 | ceph_decode_need(&p, end, len, e_inval); | |
2462 | p += len; /* skip oid */ | |
1b83bef2 | 2463 | |
fe5da05e ID |
2464 | ret = ceph_decode_pgid(&p, end, &m->pgid); |
2465 | if (ret) | |
2466 | return ret; | |
1b83bef2 | 2467 | |
fe5da05e ID |
2468 | ceph_decode_64_safe(&p, end, m->flags, e_inval); |
2469 | ceph_decode_32_safe(&p, end, m->result, e_inval); | |
2470 | ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); | |
2471 | memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); | |
2472 | p += sizeof(bad_replay_version); | |
2473 | ceph_decode_32_safe(&p, end, m->epoch, e_inval); | |
1b83bef2 | 2474 | |
fe5da05e ID |
2475 | ceph_decode_32_safe(&p, end, m->num_ops, e_inval); |
2476 | if (m->num_ops > ARRAY_SIZE(m->outdata_len)) | |
2477 | goto e_inval; | |
1b83bef2 | 2478 | |
fe5da05e ID |
2479 | ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), |
2480 | e_inval); | |
2481 | for (i = 0; i < m->num_ops; i++) { | |
1b83bef2 | 2482 | struct ceph_osd_op *op = p; |
1b83bef2 | 2483 | |
fe5da05e | 2484 | m->outdata_len[i] = le32_to_cpu(op->payload_len); |
1b83bef2 SW |
2485 | p += sizeof(*op); |
2486 | } | |
1b83bef2 | 2487 | |
fe5da05e ID |
2488 | ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); |
2489 | for (i = 0; i < m->num_ops; i++) | |
2490 | ceph_decode_32_safe(&p, end, m->rval[i], e_inval); | |
f24e9980 | 2491 | |
fe5da05e ID |
2492 | if (version >= 5) { |
2493 | ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); | |
2494 | memcpy(&m->replay_version, p, sizeof(m->replay_version)); | |
2495 | p += sizeof(m->replay_version); | |
2496 | ceph_decode_64_safe(&p, end, m->user_version, e_inval); | |
2497 | } else { | |
2498 | m->replay_version = bad_replay_version; /* struct */ | |
2499 | m->user_version = le64_to_cpu(m->replay_version.version); | |
2500 | } | |
eb845ff1 | 2501 | |
fe5da05e ID |
2502 | if (version >= 6) { |
2503 | if (version >= 7) | |
2504 | ceph_decode_8_safe(&p, end, decode_redir, e_inval); | |
b0b31a8f ID |
2505 | else |
2506 | decode_redir = 1; | |
2507 | } else { | |
2508 | decode_redir = 0; | |
2509 | } | |
2510 | ||
2511 | if (decode_redir) { | |
fe5da05e ID |
2512 | ret = ceph_redirect_decode(&p, end, &m->redirect); |
2513 | if (ret) | |
2514 | return ret; | |
205ee118 | 2515 | } else { |
fe5da05e | 2516 | ceph_oloc_init(&m->redirect.oloc); |
205ee118 | 2517 | } |
f24e9980 | 2518 | |
fe5da05e ID |
2519 | return 0; |
2520 | ||
2521 | e_inval: | |
2522 | return -EINVAL; | |
2523 | } | |
2524 | ||
2525 | /* | |
2526 | * We are done with @req if | |
2527 | * - @m is a safe reply, or | |
2528 | * - @m is an unsafe reply and we didn't want a safe one | |
2529 | */ | |
2530 | static bool done_request(const struct ceph_osd_request *req, | |
2531 | const struct MOSDOpReply *m) | |
2532 | { | |
2533 | return (m->result < 0 || | |
2534 | (m->flags & CEPH_OSD_FLAG_ONDISK) || | |
2535 | !(req->r_flags & CEPH_OSD_FLAG_ONDISK)); | |
2536 | } | |
205ee118 | 2537 | |
fe5da05e ID |
2538 | /* |
2539 | * handle osd op reply. either call the callback if it is specified, | |
2540 | * or do the completion to wake up the waiting thread. | |
2541 | * | |
2542 | * ->r_unsafe_callback is set? yes no | |
2543 | * | |
2544 | * first reply is OK (needed r_cb/r_completion, r_cb/r_completion, | |
2545 | * any or needed/got safe) r_safe_completion r_safe_completion | |
2546 | * | |
2547 | * first reply is unsafe r_unsafe_cb(true) (nothing) | |
2548 | * | |
2549 | * when we get the safe reply r_unsafe_cb(false), r_cb/r_completion, | |
2550 | * r_safe_completion r_safe_completion | |
2551 | */ | |
5aea3dcd | 2552 | static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) |
fe5da05e | 2553 | { |
5aea3dcd | 2554 | struct ceph_osd_client *osdc = osd->o_osdc; |
fe5da05e ID |
2555 | struct ceph_osd_request *req; |
2556 | struct MOSDOpReply m; | |
2557 | u64 tid = le64_to_cpu(msg->hdr.tid); | |
2558 | u32 data_len = 0; | |
2559 | bool already_acked; | |
2560 | int ret; | |
2561 | int i; | |
2562 | ||
2563 | dout("%s msg %p tid %llu\n", __func__, msg, tid); | |
2564 | ||
5aea3dcd ID |
2565 | down_read(&osdc->lock); |
2566 | if (!osd_registered(osd)) { | |
2567 | dout("%s osd%d unknown\n", __func__, osd->o_osd); | |
2568 | goto out_unlock_osdc; | |
2569 | } | |
2570 | WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); | |
2571 | ||
2572 | mutex_lock(&osd->lock); | |
2573 | req = lookup_request(&osd->o_requests, tid); | |
fe5da05e | 2574 | if (!req) { |
5aea3dcd ID |
2575 | dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); |
2576 | goto out_unlock_session; | |
fe5da05e | 2577 | } |
fe5da05e ID |
2578 | |
2579 | ret = decode_MOSDOpReply(msg, &m); | |
2580 | if (ret) { | |
2581 | pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", | |
2582 | req->r_tid, ret); | |
2583 | ceph_msg_dump(msg); | |
2584 | goto fail_request; | |
2585 | } | |
2586 | dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", | |
2587 | __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, | |
2588 | m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), | |
2589 | le64_to_cpu(m.replay_version.version), m.user_version); | |
2590 | ||
2591 | if (m.retry_attempt >= 0) { | |
2592 | if (m.retry_attempt != req->r_attempts - 1) { | |
2593 | dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", | |
2594 | req, req->r_tid, m.retry_attempt, | |
2595 | req->r_attempts - 1); | |
5aea3dcd | 2596 | goto out_unlock_session; |
fe5da05e ID |
2597 | } |
2598 | } else { | |
2599 | WARN_ON(1); /* MOSDOpReply v4 is assumed */ | |
2600 | } | |
2601 | ||
2602 | if (!ceph_oloc_empty(&m.redirect.oloc)) { | |
2603 | dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, | |
2604 | m.redirect.oloc.pool); | |
5aea3dcd ID |
2605 | unlink_request(osd, req); |
2606 | mutex_unlock(&osd->lock); | |
205ee118 | 2607 | |
fe5da05e | 2608 | ceph_oloc_copy(&req->r_t.target_oloc, &m.redirect.oloc); |
5aea3dcd ID |
2609 | req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; |
2610 | req->r_tid = 0; | |
2611 | __submit_request(req, false); | |
2612 | goto out_unlock_osdc; | |
205ee118 ID |
2613 | } |
2614 | ||
fe5da05e ID |
2615 | if (m.num_ops != req->r_num_ops) { |
2616 | pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, | |
2617 | req->r_num_ops, req->r_tid); | |
2618 | goto fail_request; | |
f24e9980 | 2619 | } |
fe5da05e ID |
2620 | for (i = 0; i < req->r_num_ops; i++) { |
2621 | dout(" req %p tid %llu op %d rval %d len %u\n", req, | |
2622 | req->r_tid, i, m.rval[i], m.outdata_len[i]); | |
2623 | req->r_ops[i].rval = m.rval[i]; | |
2624 | req->r_ops[i].outdata_len = m.outdata_len[i]; | |
2625 | data_len += m.outdata_len[i]; | |
2626 | } | |
2627 | if (data_len != le32_to_cpu(msg->hdr.data_len)) { | |
2628 | pr_err("sum of lens %u != %u for tid %llu\n", data_len, | |
2629 | le32_to_cpu(msg->hdr.data_len), req->r_tid); | |
2630 | goto fail_request; | |
2631 | } | |
2632 | dout("%s req %p tid %llu acked %d result %d data_len %u\n", __func__, | |
2633 | req, req->r_tid, req->r_got_reply, m.result, data_len); | |
2634 | ||
2635 | already_acked = req->r_got_reply; | |
2636 | if (!already_acked) { | |
2637 | req->r_result = m.result ?: data_len; | |
2638 | req->r_replay_version = m.replay_version; /* struct */ | |
2639 | req->r_got_reply = true; | |
2640 | } else if (!(m.flags & CEPH_OSD_FLAG_ONDISK)) { | |
2641 | dout("req %p tid %llu dup ack\n", req, req->r_tid); | |
5aea3dcd | 2642 | goto out_unlock_session; |
fe5da05e ID |
2643 | } |
2644 | ||
2645 | if (done_request(req, &m)) { | |
5aea3dcd | 2646 | __finish_request(req); |
fe5da05e ID |
2647 | if (req->r_linger) { |
2648 | WARN_ON(req->r_unsafe_callback); | |
922dab61 ID |
2649 | dout("req %p tid %llu cb (locked)\n", req, req->r_tid); |
2650 | __complete_request(req); | |
fe5da05e ID |
2651 | } |
2652 | } | |
f24e9980 | 2653 | |
5aea3dcd ID |
2654 | mutex_unlock(&osd->lock); |
2655 | up_read(&osdc->lock); | |
f24e9980 | 2656 | |
fe5da05e ID |
2657 | if (done_request(req, &m)) { |
2658 | if (already_acked && req->r_unsafe_callback) { | |
2659 | dout("req %p tid %llu safe-cb\n", req, req->r_tid); | |
61c5d6bf | 2660 | req->r_unsafe_callback(req, false); |
922dab61 | 2661 | } else if (!req->r_linger) { |
fe5da05e ID |
2662 | dout("req %p tid %llu cb\n", req, req->r_tid); |
2663 | __complete_request(req); | |
2664 | } | |
2665 | } else { | |
2666 | if (req->r_unsafe_callback) { | |
2667 | dout("req %p tid %llu unsafe-cb\n", req, req->r_tid); | |
2668 | req->r_unsafe_callback(req, true); | |
2669 | } else { | |
2670 | WARN_ON(1); | |
2671 | } | |
61c5d6bf | 2672 | } |
fe5da05e ID |
2673 | if (m.flags & CEPH_OSD_FLAG_ONDISK) |
2674 | complete_all(&req->r_safe_completion); | |
f24e9980 | 2675 | |
f24e9980 SW |
2676 | ceph_osdc_put_request(req); |
2677 | return; | |
2678 | ||
fe5da05e | 2679 | fail_request: |
37c89bde | 2680 | req->r_result = -EIO; |
5aea3dcd | 2681 | __finish_request(req); |
fe5da05e ID |
2682 | __complete_request(req); |
2683 | complete_all(&req->r_safe_completion); | |
5aea3dcd ID |
2684 | out_unlock_session: |
2685 | mutex_unlock(&osd->lock); | |
2686 | out_unlock_osdc: | |
2687 | up_read(&osdc->lock); | |
f24e9980 SW |
2688 | } |
2689 | ||
42c1b124 ID |
2690 | static void set_pool_was_full(struct ceph_osd_client *osdc) |
2691 | { | |
2692 | struct rb_node *n; | |
2693 | ||
2694 | for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { | |
2695 | struct ceph_pg_pool_info *pi = | |
2696 | rb_entry(n, struct ceph_pg_pool_info, node); | |
2697 | ||
2698 | pi->was_full = __pool_full(pi); | |
2699 | } | |
2700 | } | |
2701 | ||
5aea3dcd | 2702 | static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) |
f24e9980 | 2703 | { |
5aea3dcd | 2704 | struct ceph_pg_pool_info *pi; |
f24e9980 | 2705 | |
5aea3dcd ID |
2706 | pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); |
2707 | if (!pi) | |
2708 | return false; | |
f24e9980 | 2709 | |
5aea3dcd | 2710 | return pi->was_full && !__pool_full(pi); |
422d2cb8 YS |
2711 | } |
2712 | ||
922dab61 ID |
2713 | static enum calc_target_result |
2714 | recalc_linger_target(struct ceph_osd_linger_request *lreq) | |
2715 | { | |
2716 | struct ceph_osd_client *osdc = lreq->osdc; | |
2717 | enum calc_target_result ct_res; | |
2718 | ||
2719 | ct_res = calc_target(osdc, &lreq->t, &lreq->last_force_resend, true); | |
2720 | if (ct_res == CALC_TARGET_NEED_RESEND) { | |
2721 | struct ceph_osd *osd; | |
2722 | ||
2723 | osd = lookup_create_osd(osdc, lreq->t.osd, true); | |
2724 | if (osd != lreq->osd) { | |
2725 | unlink_linger(lreq->osd, lreq); | |
2726 | link_linger(osd, lreq); | |
2727 | } | |
2728 | } | |
2729 | ||
2730 | return ct_res; | |
2731 | } | |
2732 | ||
422d2cb8 | 2733 | /* |
5aea3dcd | 2734 | * Requeue requests whose mapping to an OSD has changed. |
422d2cb8 | 2735 | */ |
5aea3dcd ID |
2736 | static void scan_requests(struct ceph_osd *osd, |
2737 | bool force_resend, | |
2738 | bool cleared_full, | |
2739 | bool check_pool_cleared_full, | |
2740 | struct rb_root *need_resend, | |
2741 | struct list_head *need_resend_linger) | |
422d2cb8 | 2742 | { |
5aea3dcd ID |
2743 | struct ceph_osd_client *osdc = osd->o_osdc; |
2744 | struct rb_node *n; | |
2745 | bool force_resend_writes; | |
2746 | ||
922dab61 ID |
2747 | for (n = rb_first(&osd->o_linger_requests); n; ) { |
2748 | struct ceph_osd_linger_request *lreq = | |
2749 | rb_entry(n, struct ceph_osd_linger_request, node); | |
2750 | enum calc_target_result ct_res; | |
2751 | ||
2752 | n = rb_next(n); /* recalc_linger_target() */ | |
2753 | ||
2754 | dout("%s lreq %p linger_id %llu\n", __func__, lreq, | |
2755 | lreq->linger_id); | |
2756 | ct_res = recalc_linger_target(lreq); | |
2757 | switch (ct_res) { | |
2758 | case CALC_TARGET_NO_ACTION: | |
2759 | force_resend_writes = cleared_full || | |
2760 | (check_pool_cleared_full && | |
2761 | pool_cleared_full(osdc, lreq->t.base_oloc.pool)); | |
2762 | if (!force_resend && !force_resend_writes) | |
2763 | break; | |
2764 | ||
2765 | /* fall through */ | |
2766 | case CALC_TARGET_NEED_RESEND: | |
2767 | /* | |
2768 | * scan_requests() for the previous epoch(s) | |
2769 | * may have already added it to the list, since | |
2770 | * it's not unlinked here. | |
2771 | */ | |
2772 | if (list_empty(&lreq->scan_item)) | |
2773 | list_add_tail(&lreq->scan_item, need_resend_linger); | |
2774 | break; | |
2775 | case CALC_TARGET_POOL_DNE: | |
2776 | break; | |
2777 | } | |
2778 | } | |
2779 | ||
5aea3dcd ID |
2780 | for (n = rb_first(&osd->o_requests); n; ) { |
2781 | struct ceph_osd_request *req = | |
2782 | rb_entry(n, struct ceph_osd_request, r_node); | |
2783 | enum calc_target_result ct_res; | |
2784 | ||
2785 | n = rb_next(n); /* unlink_request() */ | |
2786 | ||
2787 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); | |
2788 | ct_res = calc_target(osdc, &req->r_t, | |
2789 | &req->r_last_force_resend, false); | |
2790 | switch (ct_res) { | |
2791 | case CALC_TARGET_NO_ACTION: | |
2792 | force_resend_writes = cleared_full || | |
2793 | (check_pool_cleared_full && | |
2794 | pool_cleared_full(osdc, req->r_t.base_oloc.pool)); | |
2795 | if (!force_resend && | |
2796 | (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || | |
2797 | !force_resend_writes)) | |
2798 | break; | |
2799 | ||
2800 | /* fall through */ | |
2801 | case CALC_TARGET_NEED_RESEND: | |
2802 | unlink_request(osd, req); | |
2803 | insert_request(need_resend, req); | |
2804 | break; | |
2805 | case CALC_TARGET_POOL_DNE: | |
2806 | break; | |
b0494532 | 2807 | } |
6f6c7006 | 2808 | } |
422d2cb8 | 2809 | } |
6f6c7006 | 2810 | |
42c1b124 | 2811 | static int handle_one_map(struct ceph_osd_client *osdc, |
5aea3dcd ID |
2812 | void *p, void *end, bool incremental, |
2813 | struct rb_root *need_resend, | |
2814 | struct list_head *need_resend_linger) | |
42c1b124 ID |
2815 | { |
2816 | struct ceph_osdmap *newmap; | |
2817 | struct rb_node *n; | |
2818 | bool skipped_map = false; | |
2819 | bool was_full; | |
2820 | ||
2821 | was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); | |
2822 | set_pool_was_full(osdc); | |
2823 | ||
2824 | if (incremental) | |
2825 | newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); | |
2826 | else | |
2827 | newmap = ceph_osdmap_decode(&p, end); | |
2828 | if (IS_ERR(newmap)) | |
2829 | return PTR_ERR(newmap); | |
2830 | ||
2831 | if (newmap != osdc->osdmap) { | |
2832 | /* | |
2833 | * Preserve ->was_full before destroying the old map. | |
2834 | * For pools that weren't in the old map, ->was_full | |
2835 | * should be false. | |
2836 | */ | |
2837 | for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { | |
2838 | struct ceph_pg_pool_info *pi = | |
2839 | rb_entry(n, struct ceph_pg_pool_info, node); | |
2840 | struct ceph_pg_pool_info *old_pi; | |
2841 | ||
2842 | old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); | |
2843 | if (old_pi) | |
2844 | pi->was_full = old_pi->was_full; | |
2845 | else | |
2846 | WARN_ON(pi->was_full); | |
2847 | } | |
2848 | ||
2849 | if (osdc->osdmap->epoch && | |
2850 | osdc->osdmap->epoch + 1 < newmap->epoch) { | |
2851 | WARN_ON(incremental); | |
2852 | skipped_map = true; | |
2853 | } | |
2854 | ||
2855 | ceph_osdmap_destroy(osdc->osdmap); | |
2856 | osdc->osdmap = newmap; | |
2857 | } | |
2858 | ||
2859 | was_full &= !ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); | |
5aea3dcd ID |
2860 | scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, |
2861 | need_resend, need_resend_linger); | |
2862 | ||
2863 | for (n = rb_first(&osdc->osds); n; ) { | |
2864 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
2865 | ||
2866 | n = rb_next(n); /* close_osd() */ | |
2867 | ||
2868 | scan_requests(osd, skipped_map, was_full, true, need_resend, | |
2869 | need_resend_linger); | |
2870 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
2871 | memcmp(&osd->o_con.peer_addr, | |
2872 | ceph_osd_addr(osdc->osdmap, osd->o_osd), | |
2873 | sizeof(struct ceph_entity_addr))) | |
2874 | close_osd(osd); | |
2875 | } | |
42c1b124 ID |
2876 | |
2877 | return 0; | |
2878 | } | |
6f6c7006 | 2879 | |
5aea3dcd ID |
2880 | static void kick_requests(struct ceph_osd_client *osdc, |
2881 | struct rb_root *need_resend, | |
2882 | struct list_head *need_resend_linger) | |
2883 | { | |
922dab61 | 2884 | struct ceph_osd_linger_request *lreq, *nlreq; |
5aea3dcd ID |
2885 | struct rb_node *n; |
2886 | ||
2887 | for (n = rb_first(need_resend); n; ) { | |
2888 | struct ceph_osd_request *req = | |
2889 | rb_entry(n, struct ceph_osd_request, r_node); | |
2890 | struct ceph_osd *osd; | |
2891 | ||
2892 | n = rb_next(n); | |
2893 | erase_request(need_resend, req); /* before link_request() */ | |
2894 | ||
2895 | WARN_ON(req->r_osd); | |
2896 | calc_target(osdc, &req->r_t, NULL, false); | |
2897 | osd = lookup_create_osd(osdc, req->r_t.osd, true); | |
2898 | link_request(osd, req); | |
2899 | if (!req->r_linger) { | |
2900 | if (!osd_homeless(osd) && !req->r_t.paused) | |
2901 | send_request(req); | |
922dab61 ID |
2902 | } else { |
2903 | cancel_linger_request(req); | |
5aea3dcd ID |
2904 | } |
2905 | } | |
922dab61 ID |
2906 | |
2907 | list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { | |
2908 | if (!osd_homeless(lreq->osd)) | |
2909 | send_linger(lreq); | |
2910 | ||
2911 | list_del_init(&lreq->scan_item); | |
2912 | } | |
5aea3dcd ID |
2913 | } |
2914 | ||
f24e9980 SW |
2915 | /* |
2916 | * Process updated osd map. | |
2917 | * | |
2918 | * The message contains any number of incremental and full maps, normally | |
2919 | * indicating some sort of topology change in the cluster. Kick requests | |
2920 | * off to different OSDs as needed. | |
2921 | */ | |
2922 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
2923 | { | |
42c1b124 ID |
2924 | void *p = msg->front.iov_base; |
2925 | void *const end = p + msg->front.iov_len; | |
f24e9980 SW |
2926 | u32 nr_maps, maplen; |
2927 | u32 epoch; | |
f24e9980 | 2928 | struct ceph_fsid fsid; |
5aea3dcd ID |
2929 | struct rb_root need_resend = RB_ROOT; |
2930 | LIST_HEAD(need_resend_linger); | |
42c1b124 ID |
2931 | bool handled_incremental = false; |
2932 | bool was_pauserd, was_pausewr; | |
2933 | bool pauserd, pausewr; | |
2934 | int err; | |
f24e9980 | 2935 | |
42c1b124 | 2936 | dout("%s have %u\n", __func__, osdc->osdmap->epoch); |
5aea3dcd | 2937 | down_write(&osdc->lock); |
f24e9980 SW |
2938 | |
2939 | /* verify fsid */ | |
2940 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
2941 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d | 2942 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
42c1b124 | 2943 | goto bad; |
f24e9980 | 2944 | |
42c1b124 ID |
2945 | was_pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); |
2946 | was_pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || | |
2947 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || | |
2948 | have_pool_full(osdc); | |
9a1ea2db | 2949 | |
f24e9980 SW |
2950 | /* incremental maps */ |
2951 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
2952 | dout(" %d inc maps\n", nr_maps); | |
2953 | while (nr_maps > 0) { | |
2954 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
2955 | epoch = ceph_decode_32(&p); |
2956 | maplen = ceph_decode_32(&p); | |
f24e9980 | 2957 | ceph_decode_need(&p, end, maplen, bad); |
42c1b124 ID |
2958 | if (osdc->osdmap->epoch && |
2959 | osdc->osdmap->epoch + 1 == epoch) { | |
f24e9980 SW |
2960 | dout("applying incremental map %u len %d\n", |
2961 | epoch, maplen); | |
5aea3dcd ID |
2962 | err = handle_one_map(osdc, p, p + maplen, true, |
2963 | &need_resend, &need_resend_linger); | |
42c1b124 | 2964 | if (err) |
f24e9980 | 2965 | goto bad; |
42c1b124 | 2966 | handled_incremental = true; |
f24e9980 SW |
2967 | } else { |
2968 | dout("ignoring incremental map %u len %d\n", | |
2969 | epoch, maplen); | |
2970 | } | |
42c1b124 | 2971 | p += maplen; |
f24e9980 SW |
2972 | nr_maps--; |
2973 | } | |
42c1b124 | 2974 | if (handled_incremental) |
f24e9980 SW |
2975 | goto done; |
2976 | ||
2977 | /* full maps */ | |
2978 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
2979 | dout(" %d full maps\n", nr_maps); | |
2980 | while (nr_maps) { | |
2981 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
2982 | epoch = ceph_decode_32(&p); |
2983 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
2984 | ceph_decode_need(&p, end, maplen, bad); |
2985 | if (nr_maps > 1) { | |
2986 | dout("skipping non-latest full map %u len %d\n", | |
2987 | epoch, maplen); | |
e5253a7b | 2988 | } else if (osdc->osdmap->epoch >= epoch) { |
f24e9980 SW |
2989 | dout("skipping full map %u len %d, " |
2990 | "older than our %u\n", epoch, maplen, | |
2991 | osdc->osdmap->epoch); | |
2992 | } else { | |
2993 | dout("taking full map %u len %d\n", epoch, maplen); | |
5aea3dcd ID |
2994 | err = handle_one_map(osdc, p, p + maplen, false, |
2995 | &need_resend, &need_resend_linger); | |
42c1b124 | 2996 | if (err) |
f24e9980 | 2997 | goto bad; |
f24e9980 SW |
2998 | } |
2999 | p += maplen; | |
3000 | nr_maps--; | |
3001 | } | |
3002 | ||
3003 | done: | |
cd634fb6 SW |
3004 | /* |
3005 | * subscribe to subsequent osdmap updates if full to ensure | |
3006 | * we find out when we are no longer full and stop returning | |
3007 | * ENOSPC. | |
3008 | */ | |
42c1b124 ID |
3009 | pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); |
3010 | pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || | |
3011 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || | |
3012 | have_pool_full(osdc); | |
3013 | if (was_pauserd || was_pausewr || pauserd || pausewr) | |
3014 | maybe_request_map(osdc); | |
cd634fb6 | 3015 | |
5aea3dcd | 3016 | kick_requests(osdc, &need_resend, &need_resend_linger); |
42c1b124 ID |
3017 | |
3018 | ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, | |
3019 | osdc->osdmap->epoch); | |
5aea3dcd | 3020 | up_write(&osdc->lock); |
03066f23 | 3021 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
3022 | return; |
3023 | ||
3024 | bad: | |
3025 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 3026 | ceph_msg_dump(msg); |
5aea3dcd ID |
3027 | up_write(&osdc->lock); |
3028 | } | |
3029 | ||
3030 | /* | |
3031 | * Resubmit requests pending on the given osd. | |
3032 | */ | |
3033 | static void kick_osd_requests(struct ceph_osd *osd) | |
3034 | { | |
3035 | struct rb_node *n; | |
3036 | ||
922dab61 | 3037 | for (n = rb_first(&osd->o_requests); n; ) { |
5aea3dcd ID |
3038 | struct ceph_osd_request *req = |
3039 | rb_entry(n, struct ceph_osd_request, r_node); | |
3040 | ||
922dab61 ID |
3041 | n = rb_next(n); /* cancel_linger_request() */ |
3042 | ||
5aea3dcd ID |
3043 | if (!req->r_linger) { |
3044 | if (!req->r_t.paused) | |
3045 | send_request(req); | |
922dab61 ID |
3046 | } else { |
3047 | cancel_linger_request(req); | |
5aea3dcd ID |
3048 | } |
3049 | } | |
922dab61 ID |
3050 | for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { |
3051 | struct ceph_osd_linger_request *lreq = | |
3052 | rb_entry(n, struct ceph_osd_linger_request, node); | |
3053 | ||
3054 | send_linger(lreq); | |
3055 | } | |
5aea3dcd ID |
3056 | } |
3057 | ||
3058 | /* | |
3059 | * If the osd connection drops, we need to resubmit all requests. | |
3060 | */ | |
3061 | static void osd_fault(struct ceph_connection *con) | |
3062 | { | |
3063 | struct ceph_osd *osd = con->private; | |
3064 | struct ceph_osd_client *osdc = osd->o_osdc; | |
3065 | ||
3066 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
3067 | ||
3068 | down_write(&osdc->lock); | |
3069 | if (!osd_registered(osd)) { | |
3070 | dout("%s osd%d unknown\n", __func__, osd->o_osd); | |
3071 | goto out_unlock; | |
3072 | } | |
3073 | ||
3074 | if (!reopen_osd(osd)) | |
3075 | kick_osd_requests(osd); | |
3076 | maybe_request_map(osdc); | |
3077 | ||
3078 | out_unlock: | |
3079 | up_write(&osdc->lock); | |
f24e9980 SW |
3080 | } |
3081 | ||
a40c4f10 YS |
3082 | /* |
3083 | * Process osd watch notifications | |
3084 | */ | |
3c663bbd AE |
3085 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
3086 | struct ceph_msg *msg) | |
a40c4f10 | 3087 | { |
922dab61 ID |
3088 | void *p = msg->front.iov_base; |
3089 | void *const end = p + msg->front.iov_len; | |
3090 | struct ceph_osd_linger_request *lreq; | |
3091 | struct linger_work *lwork; | |
3092 | u8 proto_ver, opcode; | |
3093 | u64 cookie, notify_id; | |
3094 | u64 notifier_id = 0; | |
19079203 | 3095 | s32 return_code = 0; |
922dab61 ID |
3096 | void *payload = NULL; |
3097 | u32 payload_len = 0; | |
a40c4f10 YS |
3098 | |
3099 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
3100 | ceph_decode_8_safe(&p, end, opcode, bad); | |
3101 | ceph_decode_64_safe(&p, end, cookie, bad); | |
922dab61 | 3102 | p += 8; /* skip ver */ |
a40c4f10 YS |
3103 | ceph_decode_64_safe(&p, end, notify_id, bad); |
3104 | ||
922dab61 ID |
3105 | if (proto_ver >= 1) { |
3106 | ceph_decode_32_safe(&p, end, payload_len, bad); | |
3107 | ceph_decode_need(&p, end, payload_len, bad); | |
3108 | payload = p; | |
3109 | p += payload_len; | |
3110 | } | |
3111 | ||
3112 | if (le16_to_cpu(msg->hdr.version) >= 2) | |
19079203 | 3113 | ceph_decode_32_safe(&p, end, return_code, bad); |
922dab61 ID |
3114 | |
3115 | if (le16_to_cpu(msg->hdr.version) >= 3) | |
3116 | ceph_decode_64_safe(&p, end, notifier_id, bad); | |
3117 | ||
3118 | down_read(&osdc->lock); | |
3119 | lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); | |
3120 | if (!lreq) { | |
3121 | dout("%s opcode %d cookie %llu dne\n", __func__, opcode, | |
3122 | cookie); | |
3123 | goto out_unlock_osdc; | |
3124 | } | |
3125 | ||
3126 | mutex_lock(&lreq->lock); | |
19079203 ID |
3127 | dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, |
3128 | opcode, cookie, lreq, lreq->is_watch); | |
922dab61 ID |
3129 | if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { |
3130 | if (!lreq->last_error) { | |
3131 | lreq->last_error = -ENOTCONN; | |
3132 | queue_watch_error(lreq); | |
3133 | } | |
19079203 ID |
3134 | } else if (!lreq->is_watch) { |
3135 | /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ | |
3136 | if (lreq->notify_id && lreq->notify_id != notify_id) { | |
3137 | dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, | |
3138 | lreq->notify_id, notify_id); | |
3139 | } else if (!completion_done(&lreq->notify_finish_wait)) { | |
3140 | struct ceph_msg_data *data = | |
3141 | list_first_entry_or_null(&msg->data, | |
3142 | struct ceph_msg_data, | |
3143 | links); | |
3144 | ||
3145 | if (data) { | |
3146 | if (lreq->preply_pages) { | |
3147 | WARN_ON(data->type != | |
3148 | CEPH_MSG_DATA_PAGES); | |
3149 | *lreq->preply_pages = data->pages; | |
3150 | *lreq->preply_len = data->length; | |
3151 | } else { | |
3152 | ceph_release_page_vector(data->pages, | |
3153 | calc_pages_for(0, data->length)); | |
3154 | } | |
3155 | } | |
3156 | lreq->notify_finish_error = return_code; | |
3157 | complete_all(&lreq->notify_finish_wait); | |
3158 | } | |
922dab61 ID |
3159 | } else { |
3160 | /* CEPH_WATCH_EVENT_NOTIFY */ | |
3161 | lwork = lwork_alloc(lreq, do_watch_notify); | |
3162 | if (!lwork) { | |
3163 | pr_err("failed to allocate notify-lwork\n"); | |
3164 | goto out_unlock_lreq; | |
a40c4f10 | 3165 | } |
a40c4f10 | 3166 | |
922dab61 ID |
3167 | lwork->notify.notify_id = notify_id; |
3168 | lwork->notify.notifier_id = notifier_id; | |
3169 | lwork->notify.payload = payload; | |
3170 | lwork->notify.payload_len = payload_len; | |
3171 | lwork->notify.msg = ceph_msg_get(msg); | |
3172 | lwork_queue(lwork); | |
91883cd2 | 3173 | } |
a40c4f10 | 3174 | |
922dab61 ID |
3175 | out_unlock_lreq: |
3176 | mutex_unlock(&lreq->lock); | |
3177 | out_unlock_osdc: | |
3178 | up_read(&osdc->lock); | |
a40c4f10 YS |
3179 | return; |
3180 | ||
3181 | bad: | |
3182 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
a40c4f10 YS |
3183 | } |
3184 | ||
70636773 AE |
3185 | /* |
3186 | * Register request, send initial attempt. | |
3187 | */ | |
3188 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
3189 | struct ceph_osd_request *req, | |
3190 | bool nofail) | |
3191 | { | |
5aea3dcd ID |
3192 | down_read(&osdc->lock); |
3193 | submit_request(req, false); | |
3194 | up_read(&osdc->lock); | |
0bbfdfe8 | 3195 | |
5aea3dcd | 3196 | return 0; |
f24e9980 | 3197 | } |
3d14c5d2 | 3198 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 | 3199 | |
c9f9b93d ID |
3200 | /* |
3201 | * Unregister a registered request. The request is not completed (i.e. | |
3202 | * no callbacks or wakeups) - higher layers are supposed to know what | |
3203 | * they are canceling. | |
3204 | */ | |
3205 | void ceph_osdc_cancel_request(struct ceph_osd_request *req) | |
3206 | { | |
3207 | struct ceph_osd_client *osdc = req->r_osdc; | |
3208 | ||
5aea3dcd | 3209 | down_write(&osdc->lock); |
5aea3dcd ID |
3210 | if (req->r_osd) |
3211 | cancel_request(req); | |
3212 | up_write(&osdc->lock); | |
c9f9b93d ID |
3213 | } |
3214 | EXPORT_SYMBOL(ceph_osdc_cancel_request); | |
3215 | ||
f24e9980 | 3216 | /* |
42b06965 | 3217 | * @timeout: in jiffies, 0 means "wait forever" |
f24e9980 | 3218 | */ |
42b06965 ID |
3219 | static int wait_request_timeout(struct ceph_osd_request *req, |
3220 | unsigned long timeout) | |
f24e9980 | 3221 | { |
42b06965 | 3222 | long left; |
c9f9b93d | 3223 | |
42b06965 ID |
3224 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); |
3225 | left = wait_for_completion_interruptible_timeout(&req->r_completion, | |
3226 | ceph_timeout_jiffies(timeout)); | |
3227 | if (left <= 0) { | |
3228 | left = left ?: -ETIMEDOUT; | |
c9f9b93d | 3229 | ceph_osdc_cancel_request(req); |
fe5da05e ID |
3230 | |
3231 | /* kludge - need to to wake ceph_osdc_sync() */ | |
3232 | complete_all(&req->r_safe_completion); | |
42b06965 ID |
3233 | } else { |
3234 | left = req->r_result; /* completed */ | |
f24e9980 SW |
3235 | } |
3236 | ||
42b06965 ID |
3237 | return left; |
3238 | } | |
3239 | ||
3240 | /* | |
3241 | * wait for a request to complete | |
3242 | */ | |
3243 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
3244 | struct ceph_osd_request *req) | |
3245 | { | |
3246 | return wait_request_timeout(req, 0); | |
f24e9980 | 3247 | } |
3d14c5d2 | 3248 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
3249 | |
3250 | /* | |
3251 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
3252 | */ | |
3253 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
3254 | { | |
5aea3dcd ID |
3255 | struct rb_node *n, *p; |
3256 | u64 last_tid = atomic64_read(&osdc->last_tid); | |
f24e9980 | 3257 | |
5aea3dcd ID |
3258 | again: |
3259 | down_read(&osdc->lock); | |
3260 | for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { | |
3261 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
3262 | ||
3263 | mutex_lock(&osd->lock); | |
3264 | for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { | |
3265 | struct ceph_osd_request *req = | |
3266 | rb_entry(p, struct ceph_osd_request, r_node); | |
3267 | ||
3268 | if (req->r_tid > last_tid) | |
3269 | break; | |
3270 | ||
3271 | if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) | |
3272 | continue; | |
f24e9980 | 3273 | |
5aea3dcd ID |
3274 | ceph_osdc_get_request(req); |
3275 | mutex_unlock(&osd->lock); | |
3276 | up_read(&osdc->lock); | |
3277 | dout("%s waiting on req %p tid %llu last_tid %llu\n", | |
3278 | __func__, req, req->r_tid, last_tid); | |
3279 | wait_for_completion(&req->r_safe_completion); | |
3280 | ceph_osdc_put_request(req); | |
3281 | goto again; | |
3282 | } | |
f24e9980 | 3283 | |
5aea3dcd | 3284 | mutex_unlock(&osd->lock); |
f24e9980 | 3285 | } |
5aea3dcd ID |
3286 | |
3287 | up_read(&osdc->lock); | |
3288 | dout("%s done last_tid %llu\n", __func__, last_tid); | |
f24e9980 | 3289 | } |
3d14c5d2 | 3290 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 | 3291 | |
922dab61 ID |
3292 | static struct ceph_osd_request * |
3293 | alloc_linger_request(struct ceph_osd_linger_request *lreq) | |
3294 | { | |
3295 | struct ceph_osd_request *req; | |
3296 | ||
3297 | req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); | |
3298 | if (!req) | |
3299 | return NULL; | |
3300 | ||
3301 | ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); | |
3302 | ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); | |
3303 | ||
3304 | if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { | |
3305 | ceph_osdc_put_request(req); | |
3306 | return NULL; | |
3307 | } | |
3308 | ||
3309 | return req; | |
3310 | } | |
3311 | ||
3312 | /* | |
3313 | * Returns a handle, caller owns a ref. | |
3314 | */ | |
3315 | struct ceph_osd_linger_request * | |
3316 | ceph_osdc_watch(struct ceph_osd_client *osdc, | |
3317 | struct ceph_object_id *oid, | |
3318 | struct ceph_object_locator *oloc, | |
3319 | rados_watchcb2_t wcb, | |
3320 | rados_watcherrcb_t errcb, | |
3321 | void *data) | |
3322 | { | |
3323 | struct ceph_osd_linger_request *lreq; | |
3324 | int ret; | |
3325 | ||
3326 | lreq = linger_alloc(osdc); | |
3327 | if (!lreq) | |
3328 | return ERR_PTR(-ENOMEM); | |
3329 | ||
19079203 | 3330 | lreq->is_watch = true; |
922dab61 ID |
3331 | lreq->wcb = wcb; |
3332 | lreq->errcb = errcb; | |
3333 | lreq->data = data; | |
b07d3c4b | 3334 | lreq->watch_valid_thru = jiffies; |
922dab61 ID |
3335 | |
3336 | ceph_oid_copy(&lreq->t.base_oid, oid); | |
3337 | ceph_oloc_copy(&lreq->t.base_oloc, oloc); | |
3338 | lreq->t.flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK; | |
3339 | lreq->mtime = CURRENT_TIME; | |
3340 | ||
3341 | lreq->reg_req = alloc_linger_request(lreq); | |
3342 | if (!lreq->reg_req) { | |
3343 | ret = -ENOMEM; | |
3344 | goto err_put_lreq; | |
3345 | } | |
3346 | ||
3347 | lreq->ping_req = alloc_linger_request(lreq); | |
3348 | if (!lreq->ping_req) { | |
3349 | ret = -ENOMEM; | |
3350 | goto err_put_lreq; | |
3351 | } | |
3352 | ||
3353 | down_write(&osdc->lock); | |
3354 | linger_register(lreq); /* before osd_req_op_* */ | |
3355 | osd_req_op_watch_init(lreq->reg_req, 0, lreq->linger_id, | |
3356 | CEPH_OSD_WATCH_OP_WATCH); | |
3357 | osd_req_op_watch_init(lreq->ping_req, 0, lreq->linger_id, | |
3358 | CEPH_OSD_WATCH_OP_PING); | |
3359 | linger_submit(lreq); | |
3360 | up_write(&osdc->lock); | |
3361 | ||
3362 | ret = linger_reg_commit_wait(lreq); | |
3363 | if (ret) { | |
3364 | linger_cancel(lreq); | |
3365 | goto err_put_lreq; | |
3366 | } | |
3367 | ||
3368 | return lreq; | |
3369 | ||
3370 | err_put_lreq: | |
3371 | linger_put(lreq); | |
3372 | return ERR_PTR(ret); | |
3373 | } | |
3374 | EXPORT_SYMBOL(ceph_osdc_watch); | |
3375 | ||
3376 | /* | |
3377 | * Releases a ref. | |
3378 | * | |
3379 | * Times out after mount_timeout to preserve rbd unmap behaviour | |
3380 | * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap | |
3381 | * with mount_timeout"). | |
3382 | */ | |
3383 | int ceph_osdc_unwatch(struct ceph_osd_client *osdc, | |
3384 | struct ceph_osd_linger_request *lreq) | |
3385 | { | |
3386 | struct ceph_options *opts = osdc->client->options; | |
3387 | struct ceph_osd_request *req; | |
3388 | int ret; | |
3389 | ||
3390 | req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); | |
3391 | if (!req) | |
3392 | return -ENOMEM; | |
3393 | ||
3394 | ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); | |
3395 | ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); | |
3396 | req->r_flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK; | |
3397 | req->r_mtime = CURRENT_TIME; | |
3398 | osd_req_op_watch_init(req, 0, lreq->linger_id, | |
3399 | CEPH_OSD_WATCH_OP_UNWATCH); | |
3400 | ||
3401 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); | |
3402 | if (ret) | |
3403 | goto out_put_req; | |
3404 | ||
3405 | ceph_osdc_start_request(osdc, req, false); | |
3406 | linger_cancel(lreq); | |
3407 | linger_put(lreq); | |
3408 | ret = wait_request_timeout(req, opts->mount_timeout); | |
3409 | ||
3410 | out_put_req: | |
3411 | ceph_osdc_put_request(req); | |
3412 | return ret; | |
3413 | } | |
3414 | EXPORT_SYMBOL(ceph_osdc_unwatch); | |
3415 | ||
3416 | static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, | |
3417 | u64 notify_id, u64 cookie, void *payload, | |
3418 | size_t payload_len) | |
3419 | { | |
3420 | struct ceph_osd_req_op *op; | |
3421 | struct ceph_pagelist *pl; | |
3422 | int ret; | |
3423 | ||
3424 | op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); | |
3425 | ||
3426 | pl = kmalloc(sizeof(*pl), GFP_NOIO); | |
3427 | if (!pl) | |
3428 | return -ENOMEM; | |
3429 | ||
3430 | ceph_pagelist_init(pl); | |
3431 | ret = ceph_pagelist_encode_64(pl, notify_id); | |
3432 | ret |= ceph_pagelist_encode_64(pl, cookie); | |
3433 | if (payload) { | |
3434 | ret |= ceph_pagelist_encode_32(pl, payload_len); | |
3435 | ret |= ceph_pagelist_append(pl, payload, payload_len); | |
3436 | } else { | |
3437 | ret |= ceph_pagelist_encode_32(pl, 0); | |
3438 | } | |
3439 | if (ret) { | |
3440 | ceph_pagelist_release(pl); | |
3441 | return -ENOMEM; | |
3442 | } | |
3443 | ||
3444 | ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); | |
3445 | op->indata_len = pl->length; | |
3446 | return 0; | |
3447 | } | |
3448 | ||
3449 | int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, | |
3450 | struct ceph_object_id *oid, | |
3451 | struct ceph_object_locator *oloc, | |
3452 | u64 notify_id, | |
3453 | u64 cookie, | |
3454 | void *payload, | |
3455 | size_t payload_len) | |
3456 | { | |
3457 | struct ceph_osd_request *req; | |
3458 | int ret; | |
3459 | ||
3460 | req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); | |
3461 | if (!req) | |
3462 | return -ENOMEM; | |
3463 | ||
3464 | ceph_oid_copy(&req->r_base_oid, oid); | |
3465 | ceph_oloc_copy(&req->r_base_oloc, oloc); | |
3466 | req->r_flags = CEPH_OSD_FLAG_READ; | |
3467 | ||
3468 | ret = ceph_osdc_alloc_messages(req, GFP_NOIO); | |
3469 | if (ret) | |
3470 | goto out_put_req; | |
3471 | ||
3472 | ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, | |
3473 | payload_len); | |
3474 | if (ret) | |
3475 | goto out_put_req; | |
3476 | ||
3477 | ceph_osdc_start_request(osdc, req, false); | |
3478 | ret = ceph_osdc_wait_request(osdc, req); | |
3479 | ||
3480 | out_put_req: | |
3481 | ceph_osdc_put_request(req); | |
3482 | return ret; | |
3483 | } | |
3484 | EXPORT_SYMBOL(ceph_osdc_notify_ack); | |
3485 | ||
19079203 ID |
3486 | static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, |
3487 | u64 cookie, u32 prot_ver, u32 timeout, | |
3488 | void *payload, size_t payload_len) | |
3489 | { | |
3490 | struct ceph_osd_req_op *op; | |
3491 | struct ceph_pagelist *pl; | |
3492 | int ret; | |
3493 | ||
3494 | op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); | |
3495 | op->notify.cookie = cookie; | |
3496 | ||
3497 | pl = kmalloc(sizeof(*pl), GFP_NOIO); | |
3498 | if (!pl) | |
3499 | return -ENOMEM; | |
3500 | ||
3501 | ceph_pagelist_init(pl); | |
3502 | ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ | |
3503 | ret |= ceph_pagelist_encode_32(pl, timeout); | |
3504 | ret |= ceph_pagelist_encode_32(pl, payload_len); | |
3505 | ret |= ceph_pagelist_append(pl, payload, payload_len); | |
3506 | if (ret) { | |
3507 | ceph_pagelist_release(pl); | |
3508 | return -ENOMEM; | |
3509 | } | |
3510 | ||
3511 | ceph_osd_data_pagelist_init(&op->notify.request_data, pl); | |
3512 | op->indata_len = pl->length; | |
3513 | return 0; | |
3514 | } | |
3515 | ||
3516 | /* | |
3517 | * @timeout: in seconds | |
3518 | * | |
3519 | * @preply_{pages,len} are initialized both on success and error. | |
3520 | * The caller is responsible for: | |
3521 | * | |
3522 | * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) | |
3523 | */ | |
3524 | int ceph_osdc_notify(struct ceph_osd_client *osdc, | |
3525 | struct ceph_object_id *oid, | |
3526 | struct ceph_object_locator *oloc, | |
3527 | void *payload, | |
3528 | size_t payload_len, | |
3529 | u32 timeout, | |
3530 | struct page ***preply_pages, | |
3531 | size_t *preply_len) | |
3532 | { | |
3533 | struct ceph_osd_linger_request *lreq; | |
3534 | struct page **pages; | |
3535 | int ret; | |
3536 | ||
3537 | WARN_ON(!timeout); | |
3538 | if (preply_pages) { | |
3539 | *preply_pages = NULL; | |
3540 | *preply_len = 0; | |
3541 | } | |
3542 | ||
3543 | lreq = linger_alloc(osdc); | |
3544 | if (!lreq) | |
3545 | return -ENOMEM; | |
3546 | ||
3547 | lreq->preply_pages = preply_pages; | |
3548 | lreq->preply_len = preply_len; | |
3549 | ||
3550 | ceph_oid_copy(&lreq->t.base_oid, oid); | |
3551 | ceph_oloc_copy(&lreq->t.base_oloc, oloc); | |
3552 | lreq->t.flags = CEPH_OSD_FLAG_READ; | |
3553 | ||
3554 | lreq->reg_req = alloc_linger_request(lreq); | |
3555 | if (!lreq->reg_req) { | |
3556 | ret = -ENOMEM; | |
3557 | goto out_put_lreq; | |
3558 | } | |
3559 | ||
3560 | /* for notify_id */ | |
3561 | pages = ceph_alloc_page_vector(1, GFP_NOIO); | |
3562 | if (IS_ERR(pages)) { | |
3563 | ret = PTR_ERR(pages); | |
3564 | goto out_put_lreq; | |
3565 | } | |
3566 | ||
3567 | down_write(&osdc->lock); | |
3568 | linger_register(lreq); /* before osd_req_op_* */ | |
3569 | ret = osd_req_op_notify_init(lreq->reg_req, 0, lreq->linger_id, 1, | |
3570 | timeout, payload, payload_len); | |
3571 | if (ret) { | |
3572 | linger_unregister(lreq); | |
3573 | up_write(&osdc->lock); | |
3574 | ceph_release_page_vector(pages, 1); | |
3575 | goto out_put_lreq; | |
3576 | } | |
3577 | ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, | |
3578 | response_data), | |
3579 | pages, PAGE_SIZE, 0, false, true); | |
3580 | linger_submit(lreq); | |
3581 | up_write(&osdc->lock); | |
3582 | ||
3583 | ret = linger_reg_commit_wait(lreq); | |
3584 | if (!ret) | |
3585 | ret = linger_notify_finish_wait(lreq); | |
3586 | else | |
3587 | dout("lreq %p failed to initiate notify %d\n", lreq, ret); | |
3588 | ||
3589 | linger_cancel(lreq); | |
3590 | out_put_lreq: | |
3591 | linger_put(lreq); | |
3592 | return ret; | |
3593 | } | |
3594 | EXPORT_SYMBOL(ceph_osdc_notify); | |
3595 | ||
b07d3c4b ID |
3596 | /* |
3597 | * Return the number of milliseconds since the watch was last | |
3598 | * confirmed, or an error. If there is an error, the watch is no | |
3599 | * longer valid, and should be destroyed with ceph_osdc_unwatch(). | |
3600 | */ | |
3601 | int ceph_osdc_watch_check(struct ceph_osd_client *osdc, | |
3602 | struct ceph_osd_linger_request *lreq) | |
3603 | { | |
3604 | unsigned long stamp, age; | |
3605 | int ret; | |
3606 | ||
3607 | down_read(&osdc->lock); | |
3608 | mutex_lock(&lreq->lock); | |
3609 | stamp = lreq->watch_valid_thru; | |
3610 | if (!list_empty(&lreq->pending_lworks)) { | |
3611 | struct linger_work *lwork = | |
3612 | list_first_entry(&lreq->pending_lworks, | |
3613 | struct linger_work, | |
3614 | pending_item); | |
3615 | ||
3616 | if (time_before(lwork->queued_stamp, stamp)) | |
3617 | stamp = lwork->queued_stamp; | |
3618 | } | |
3619 | age = jiffies - stamp; | |
3620 | dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, | |
3621 | lreq, lreq->linger_id, age, lreq->last_error); | |
3622 | /* we are truncating to msecs, so return a safe upper bound */ | |
3623 | ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); | |
3624 | ||
3625 | mutex_unlock(&lreq->lock); | |
3626 | up_read(&osdc->lock); | |
3627 | return ret; | |
3628 | } | |
3629 | ||
dd935f44 JD |
3630 | /* |
3631 | * Call all pending notify callbacks - for use after a watch is | |
3632 | * unregistered, to make sure no more callbacks for it will be invoked | |
3633 | */ | |
f6479449 | 3634 | void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) |
dd935f44 JD |
3635 | { |
3636 | flush_workqueue(osdc->notify_wq); | |
3637 | } | |
3638 | EXPORT_SYMBOL(ceph_osdc_flush_notifies); | |
3639 | ||
3640 | ||
f24e9980 SW |
3641 | /* |
3642 | * init, shutdown | |
3643 | */ | |
3644 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
3645 | { | |
3646 | int err; | |
3647 | ||
3648 | dout("init\n"); | |
3649 | osdc->client = client; | |
5aea3dcd | 3650 | init_rwsem(&osdc->lock); |
f24e9980 | 3651 | osdc->osds = RB_ROOT; |
f5a2041b | 3652 | INIT_LIST_HEAD(&osdc->osd_lru); |
9dd2845c | 3653 | spin_lock_init(&osdc->osd_lru_lock); |
5aea3dcd ID |
3654 | osd_init(&osdc->homeless_osd); |
3655 | osdc->homeless_osd.o_osdc = osdc; | |
3656 | osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; | |
922dab61 | 3657 | osdc->linger_requests = RB_ROOT; |
f24e9980 | 3658 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); |
f5a2041b YS |
3659 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
3660 | ||
5f44f142 | 3661 | err = -ENOMEM; |
e5253a7b ID |
3662 | osdc->osdmap = ceph_osdmap_alloc(); |
3663 | if (!osdc->osdmap) | |
3664 | goto out; | |
3665 | ||
9e767adb ID |
3666 | osdc->req_mempool = mempool_create_slab_pool(10, |
3667 | ceph_osd_request_cache); | |
f24e9980 | 3668 | if (!osdc->req_mempool) |
e5253a7b | 3669 | goto out_map; |
f24e9980 | 3670 | |
d50b409f | 3671 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
711da55d | 3672 | PAGE_SIZE, 10, true, "osd_op"); |
f24e9980 | 3673 | if (err < 0) |
5f44f142 | 3674 | goto out_mempool; |
d50b409f | 3675 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
711da55d | 3676 | PAGE_SIZE, 10, true, "osd_op_reply"); |
c16e7869 SW |
3677 | if (err < 0) |
3678 | goto out_msgpool; | |
a40c4f10 | 3679 | |
dbcae088 | 3680 | err = -ENOMEM; |
a40c4f10 | 3681 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); |
dbcae088 | 3682 | if (!osdc->notify_wq) |
c172ec5c ID |
3683 | goto out_msgpool_reply; |
3684 | ||
fbca9635 ID |
3685 | schedule_delayed_work(&osdc->timeout_work, |
3686 | osdc->client->options->osd_keepalive_timeout); | |
b37ee1b9 ID |
3687 | schedule_delayed_work(&osdc->osds_timeout_work, |
3688 | round_jiffies_relative(osdc->client->options->osd_idle_ttl)); | |
3689 | ||
f24e9980 | 3690 | return 0; |
5f44f142 | 3691 | |
c172ec5c ID |
3692 | out_msgpool_reply: |
3693 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); | |
c16e7869 SW |
3694 | out_msgpool: |
3695 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
3696 | out_mempool: |
3697 | mempool_destroy(osdc->req_mempool); | |
e5253a7b ID |
3698 | out_map: |
3699 | ceph_osdmap_destroy(osdc->osdmap); | |
5f44f142 SW |
3700 | out: |
3701 | return err; | |
f24e9980 SW |
3702 | } |
3703 | ||
3704 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
3705 | { | |
a40c4f10 YS |
3706 | flush_workqueue(osdc->notify_wq); |
3707 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 3708 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 3709 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
42a2c09f | 3710 | |
5aea3dcd | 3711 | down_write(&osdc->lock); |
42a2c09f ID |
3712 | while (!RB_EMPTY_ROOT(&osdc->osds)) { |
3713 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
3714 | struct ceph_osd, o_node); | |
5aea3dcd | 3715 | close_osd(osd); |
42a2c09f | 3716 | } |
5aea3dcd ID |
3717 | up_write(&osdc->lock); |
3718 | WARN_ON(atomic_read(&osdc->homeless_osd.o_ref) != 1); | |
3719 | osd_cleanup(&osdc->homeless_osd); | |
3720 | ||
3721 | WARN_ON(!list_empty(&osdc->osd_lru)); | |
922dab61 | 3722 | WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); |
5aea3dcd ID |
3723 | WARN_ON(atomic_read(&osdc->num_requests)); |
3724 | WARN_ON(atomic_read(&osdc->num_homeless)); | |
42a2c09f | 3725 | |
e5253a7b | 3726 | ceph_osdmap_destroy(osdc->osdmap); |
f24e9980 SW |
3727 | mempool_destroy(osdc->req_mempool); |
3728 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 3729 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
3730 | } |
3731 | ||
3732 | /* | |
3733 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
3734 | * *plen. Return number of bytes read, or error. | |
3735 | */ | |
3736 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
3737 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
3738 | u64 off, u64 *plen, | |
3739 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 3740 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
3741 | { |
3742 | struct ceph_osd_request *req; | |
3743 | int rc = 0; | |
3744 | ||
3745 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
3746 | vino.snap, off, *plen); | |
715e4cd4 | 3747 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, |
f24e9980 | 3748 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, |
acead002 | 3749 | NULL, truncate_seq, truncate_size, |
153e5167 | 3750 | false); |
6816282d SW |
3751 | if (IS_ERR(req)) |
3752 | return PTR_ERR(req); | |
f24e9980 SW |
3753 | |
3754 | /* it may be a short read due to an object boundary */ | |
406e2c9f | 3755 | osd_req_op_extent_osd_data_pages(req, 0, |
a4ce40a9 | 3756 | pages, *plen, page_align, false, false); |
f24e9980 | 3757 | |
e0c59487 | 3758 | dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", |
43bfe5de | 3759 | off, *plen, *plen, page_align); |
f24e9980 SW |
3760 | |
3761 | rc = ceph_osdc_start_request(osdc, req, false); | |
3762 | if (!rc) | |
3763 | rc = ceph_osdc_wait_request(osdc, req); | |
3764 | ||
3765 | ceph_osdc_put_request(req); | |
3766 | dout("readpages result %d\n", rc); | |
3767 | return rc; | |
3768 | } | |
3d14c5d2 | 3769 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
3770 | |
3771 | /* | |
3772 | * do a synchronous write on N pages | |
3773 | */ | |
3774 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
3775 | struct ceph_file_layout *layout, | |
3776 | struct ceph_snap_context *snapc, | |
3777 | u64 off, u64 len, | |
3778 | u32 truncate_seq, u64 truncate_size, | |
3779 | struct timespec *mtime, | |
24808826 | 3780 | struct page **pages, int num_pages) |
f24e9980 SW |
3781 | { |
3782 | struct ceph_osd_request *req; | |
3783 | int rc = 0; | |
b7495fc2 | 3784 | int page_align = off & ~PAGE_MASK; |
f24e9980 | 3785 | |
715e4cd4 | 3786 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, |
f24e9980 | 3787 | CEPH_OSD_OP_WRITE, |
24808826 | 3788 | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, |
acead002 | 3789 | snapc, truncate_seq, truncate_size, |
153e5167 | 3790 | true); |
6816282d SW |
3791 | if (IS_ERR(req)) |
3792 | return PTR_ERR(req); | |
f24e9980 SW |
3793 | |
3794 | /* it may be a short write due to an object boundary */ | |
406e2c9f | 3795 | osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, |
43bfe5de AE |
3796 | false, false); |
3797 | dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); | |
f24e9980 | 3798 | |
bb873b53 | 3799 | req->r_mtime = *mtime; |
87f979d3 | 3800 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
3801 | if (!rc) |
3802 | rc = ceph_osdc_wait_request(osdc, req); | |
3803 | ||
3804 | ceph_osdc_put_request(req); | |
3805 | if (rc == 0) | |
3806 | rc = len; | |
3807 | dout("writepages result %d\n", rc); | |
3808 | return rc; | |
3809 | } | |
3d14c5d2 | 3810 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 | 3811 | |
5522ae0b AE |
3812 | int ceph_osdc_setup(void) |
3813 | { | |
3f1af42a ID |
3814 | size_t size = sizeof(struct ceph_osd_request) + |
3815 | CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); | |
3816 | ||
5522ae0b | 3817 | BUG_ON(ceph_osd_request_cache); |
3f1af42a ID |
3818 | ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, |
3819 | 0, 0, NULL); | |
5522ae0b AE |
3820 | |
3821 | return ceph_osd_request_cache ? 0 : -ENOMEM; | |
3822 | } | |
3823 | EXPORT_SYMBOL(ceph_osdc_setup); | |
3824 | ||
3825 | void ceph_osdc_cleanup(void) | |
3826 | { | |
3827 | BUG_ON(!ceph_osd_request_cache); | |
3828 | kmem_cache_destroy(ceph_osd_request_cache); | |
3829 | ceph_osd_request_cache = NULL; | |
3830 | } | |
3831 | EXPORT_SYMBOL(ceph_osdc_cleanup); | |
3832 | ||
f24e9980 SW |
3833 | /* |
3834 | * handle incoming message | |
3835 | */ | |
3836 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
3837 | { | |
3838 | struct ceph_osd *osd = con->private; | |
5aea3dcd | 3839 | struct ceph_osd_client *osdc = osd->o_osdc; |
f24e9980 SW |
3840 | int type = le16_to_cpu(msg->hdr.type); |
3841 | ||
f24e9980 SW |
3842 | switch (type) { |
3843 | case CEPH_MSG_OSD_MAP: | |
3844 | ceph_osdc_handle_map(osdc, msg); | |
3845 | break; | |
3846 | case CEPH_MSG_OSD_OPREPLY: | |
5aea3dcd | 3847 | handle_reply(osd, msg); |
f24e9980 | 3848 | break; |
a40c4f10 YS |
3849 | case CEPH_MSG_WATCH_NOTIFY: |
3850 | handle_watch_notify(osdc, msg); | |
3851 | break; | |
f24e9980 SW |
3852 | |
3853 | default: | |
3854 | pr_err("received unknown message type %d %s\n", type, | |
3855 | ceph_msg_type_name(type)); | |
3856 | } | |
5aea3dcd | 3857 | |
f24e9980 SW |
3858 | ceph_msg_put(msg); |
3859 | } | |
3860 | ||
5b3a4db3 | 3861 | /* |
d15f9d69 ID |
3862 | * Lookup and return message for incoming reply. Don't try to do |
3863 | * anything about a larger than preallocated data portion of the | |
3864 | * message at the moment - for now, just skip the message. | |
5b3a4db3 SW |
3865 | */ |
3866 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
3867 | struct ceph_msg_header *hdr, |
3868 | int *skip) | |
f24e9980 SW |
3869 | { |
3870 | struct ceph_osd *osd = con->private; | |
3871 | struct ceph_osd_client *osdc = osd->o_osdc; | |
5aea3dcd | 3872 | struct ceph_msg *m = NULL; |
0547a9b3 | 3873 | struct ceph_osd_request *req; |
3f0a4ac5 | 3874 | int front_len = le32_to_cpu(hdr->front_len); |
5b3a4db3 | 3875 | int data_len = le32_to_cpu(hdr->data_len); |
5aea3dcd | 3876 | u64 tid = le64_to_cpu(hdr->tid); |
f24e9980 | 3877 | |
5aea3dcd ID |
3878 | down_read(&osdc->lock); |
3879 | if (!osd_registered(osd)) { | |
3880 | dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); | |
3881 | *skip = 1; | |
3882 | goto out_unlock_osdc; | |
3883 | } | |
3884 | WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); | |
3885 | ||
3886 | mutex_lock(&osd->lock); | |
3887 | req = lookup_request(&osd->o_requests, tid); | |
0547a9b3 | 3888 | if (!req) { |
cd8140c6 ID |
3889 | dout("%s osd%d tid %llu unknown, skipping\n", __func__, |
3890 | osd->o_osd, tid); | |
d15f9d69 | 3891 | *skip = 1; |
5aea3dcd | 3892 | goto out_unlock_session; |
0547a9b3 | 3893 | } |
c16e7869 | 3894 | |
ace6d3a9 | 3895 | ceph_msg_revoke_incoming(req->r_reply); |
0547a9b3 | 3896 | |
f2be82b0 | 3897 | if (front_len > req->r_reply->front_alloc_len) { |
d15f9d69 ID |
3898 | pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", |
3899 | __func__, osd->o_osd, req->r_tid, front_len, | |
3900 | req->r_reply->front_alloc_len); | |
3f0a4ac5 ID |
3901 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, |
3902 | false); | |
a79832f2 | 3903 | if (!m) |
5aea3dcd | 3904 | goto out_unlock_session; |
c16e7869 SW |
3905 | ceph_msg_put(req->r_reply); |
3906 | req->r_reply = m; | |
3907 | } | |
0fff87ec | 3908 | |
d15f9d69 ID |
3909 | if (data_len > req->r_reply->data_length) { |
3910 | pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", | |
3911 | __func__, osd->o_osd, req->r_tid, data_len, | |
3912 | req->r_reply->data_length); | |
3913 | m = NULL; | |
3914 | *skip = 1; | |
5aea3dcd | 3915 | goto out_unlock_session; |
0547a9b3 | 3916 | } |
d15f9d69 ID |
3917 | |
3918 | m = ceph_msg_get(req->r_reply); | |
c16e7869 | 3919 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 | 3920 | |
5aea3dcd ID |
3921 | out_unlock_session: |
3922 | mutex_unlock(&osd->lock); | |
3923 | out_unlock_osdc: | |
3924 | up_read(&osdc->lock); | |
2450418c | 3925 | return m; |
5b3a4db3 SW |
3926 | } |
3927 | ||
19079203 ID |
3928 | /* |
3929 | * TODO: switch to a msg-owned pagelist | |
3930 | */ | |
3931 | static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) | |
3932 | { | |
3933 | struct ceph_msg *m; | |
3934 | int type = le16_to_cpu(hdr->type); | |
3935 | u32 front_len = le32_to_cpu(hdr->front_len); | |
3936 | u32 data_len = le32_to_cpu(hdr->data_len); | |
3937 | ||
3938 | m = ceph_msg_new(type, front_len, GFP_NOIO, false); | |
3939 | if (!m) | |
3940 | return NULL; | |
3941 | ||
3942 | if (data_len) { | |
3943 | struct page **pages; | |
3944 | struct ceph_osd_data osd_data; | |
3945 | ||
3946 | pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), | |
3947 | GFP_NOIO); | |
3948 | if (!pages) { | |
3949 | ceph_msg_put(m); | |
3950 | return NULL; | |
3951 | } | |
3952 | ||
3953 | ceph_osd_data_pages_init(&osd_data, pages, data_len, 0, false, | |
3954 | false); | |
3955 | ceph_osdc_msg_data_add(m, &osd_data); | |
3956 | } | |
3957 | ||
3958 | return m; | |
3959 | } | |
3960 | ||
5b3a4db3 SW |
3961 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, |
3962 | struct ceph_msg_header *hdr, | |
3963 | int *skip) | |
3964 | { | |
3965 | struct ceph_osd *osd = con->private; | |
3966 | int type = le16_to_cpu(hdr->type); | |
5b3a4db3 | 3967 | |
1c20f2d2 | 3968 | *skip = 0; |
5b3a4db3 SW |
3969 | switch (type) { |
3970 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 3971 | case CEPH_MSG_WATCH_NOTIFY: |
19079203 | 3972 | return alloc_msg_with_page_vector(hdr); |
5b3a4db3 SW |
3973 | case CEPH_MSG_OSD_OPREPLY: |
3974 | return get_reply(con, hdr, skip); | |
3975 | default: | |
5aea3dcd ID |
3976 | pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, |
3977 | osd->o_osd, type); | |
5b3a4db3 SW |
3978 | *skip = 1; |
3979 | return NULL; | |
3980 | } | |
f24e9980 SW |
3981 | } |
3982 | ||
3983 | /* | |
3984 | * Wrappers to refcount containing ceph_osd struct | |
3985 | */ | |
3986 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
3987 | { | |
3988 | struct ceph_osd *osd = con->private; | |
3989 | if (get_osd(osd)) | |
3990 | return con; | |
3991 | return NULL; | |
3992 | } | |
3993 | ||
3994 | static void put_osd_con(struct ceph_connection *con) | |
3995 | { | |
3996 | struct ceph_osd *osd = con->private; | |
3997 | put_osd(osd); | |
3998 | } | |
3999 | ||
4e7a5dcd SW |
4000 | /* |
4001 | * authentication | |
4002 | */ | |
a3530df3 AE |
4003 | /* |
4004 | * Note: returned pointer is the address of a structure that's | |
4005 | * managed separately. Caller must *not* attempt to free it. | |
4006 | */ | |
4007 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 4008 | int *proto, int force_new) |
4e7a5dcd SW |
4009 | { |
4010 | struct ceph_osd *o = con->private; | |
4011 | struct ceph_osd_client *osdc = o->o_osdc; | |
4012 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 4013 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 4014 | |
74f1869f | 4015 | if (force_new && auth->authorizer) { |
6c1ea260 | 4016 | ceph_auth_destroy_authorizer(auth->authorizer); |
74f1869f AE |
4017 | auth->authorizer = NULL; |
4018 | } | |
27859f97 SW |
4019 | if (!auth->authorizer) { |
4020 | int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
4021 | auth); | |
4e7a5dcd | 4022 | if (ret) |
a3530df3 | 4023 | return ERR_PTR(ret); |
27859f97 SW |
4024 | } else { |
4025 | int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
0bed9b5c SW |
4026 | auth); |
4027 | if (ret) | |
4028 | return ERR_PTR(ret); | |
4e7a5dcd | 4029 | } |
4e7a5dcd | 4030 | *proto = ac->protocol; |
74f1869f | 4031 | |
a3530df3 | 4032 | return auth; |
4e7a5dcd SW |
4033 | } |
4034 | ||
4035 | ||
4036 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
4037 | { | |
4038 | struct ceph_osd *o = con->private; | |
4039 | struct ceph_osd_client *osdc = o->o_osdc; | |
4040 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
4041 | ||
27859f97 | 4042 | return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
4043 | } |
4044 | ||
9bd2e6f8 SW |
4045 | static int invalidate_authorizer(struct ceph_connection *con) |
4046 | { | |
4047 | struct ceph_osd *o = con->private; | |
4048 | struct ceph_osd_client *osdc = o->o_osdc; | |
4049 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
4050 | ||
27859f97 | 4051 | ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
9bd2e6f8 SW |
4052 | return ceph_monc_validate_auth(&osdc->client->monc); |
4053 | } | |
4e7a5dcd | 4054 | |
79dbd1ba | 4055 | static int osd_sign_message(struct ceph_msg *msg) |
33d07337 | 4056 | { |
79dbd1ba | 4057 | struct ceph_osd *o = msg->con->private; |
33d07337 | 4058 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 4059 | |
33d07337 YZ |
4060 | return ceph_auth_sign_message(auth, msg); |
4061 | } | |
4062 | ||
79dbd1ba | 4063 | static int osd_check_message_signature(struct ceph_msg *msg) |
33d07337 | 4064 | { |
79dbd1ba | 4065 | struct ceph_osd *o = msg->con->private; |
33d07337 | 4066 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 4067 | |
33d07337 YZ |
4068 | return ceph_auth_check_message_signature(auth, msg); |
4069 | } | |
4070 | ||
9e32789f | 4071 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
4072 | .get = get_osd_con, |
4073 | .put = put_osd_con, | |
4074 | .dispatch = dispatch, | |
4e7a5dcd SW |
4075 | .get_authorizer = get_authorizer, |
4076 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 4077 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 4078 | .alloc_msg = alloc_msg, |
79dbd1ba ID |
4079 | .sign_message = osd_sign_message, |
4080 | .check_message_signature = osd_check_message_signature, | |
5aea3dcd | 4081 | .fault = osd_fault, |
f24e9980 | 4082 | }; |