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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); | |
48 | ||
49 | #if 1 | |
50 | static inline bool rwsem_is_wrlocked(struct rw_semaphore *sem) | |
51 | { | |
52 | bool wrlocked = true; | |
53 | ||
54 | if (unlikely(down_read_trylock(sem))) { | |
55 | wrlocked = false; | |
56 | up_read(sem); | |
57 | } | |
58 | ||
59 | return wrlocked; | |
60 | } | |
61 | static inline void verify_osdc_locked(struct ceph_osd_client *osdc) | |
62 | { | |
63 | WARN_ON(!rwsem_is_locked(&osdc->lock)); | |
64 | } | |
65 | static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) | |
66 | { | |
67 | WARN_ON(!rwsem_is_wrlocked(&osdc->lock)); | |
68 | } | |
69 | static inline void verify_osd_locked(struct ceph_osd *osd) | |
70 | { | |
71 | struct ceph_osd_client *osdc = osd->o_osdc; | |
72 | ||
73 | WARN_ON(!(mutex_is_locked(&osd->lock) && | |
74 | rwsem_is_locked(&osdc->lock)) && | |
75 | !rwsem_is_wrlocked(&osdc->lock)); | |
76 | } | |
77 | #else | |
78 | static inline void verify_osdc_locked(struct ceph_osd_client *osdc) { } | |
79 | static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) { } | |
80 | static inline void verify_osd_locked(struct ceph_osd *osd) { } | |
81 | #endif | |
82 | ||
f24e9980 SW |
83 | /* |
84 | * calculate the mapping of a file extent onto an object, and fill out the | |
85 | * request accordingly. shorten extent as necessary if it crosses an | |
86 | * object boundary. | |
87 | * | |
88 | * fill osd op in request message. | |
89 | */ | |
dbe0fc41 | 90 | static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, |
a19dadfb | 91 | u64 *objnum, u64 *objoff, u64 *objlen) |
f24e9980 | 92 | { |
60e56f13 | 93 | u64 orig_len = *plen; |
d63b77f4 | 94 | int r; |
f24e9980 | 95 | |
60e56f13 | 96 | /* object extent? */ |
75d1c941 AE |
97 | r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, |
98 | objoff, objlen); | |
d63b77f4 SW |
99 | if (r < 0) |
100 | return r; | |
75d1c941 AE |
101 | if (*objlen < orig_len) { |
102 | *plen = *objlen; | |
60e56f13 AE |
103 | dout(" skipping last %llu, final file extent %llu~%llu\n", |
104 | orig_len - *plen, off, *plen); | |
105 | } | |
106 | ||
75d1c941 | 107 | dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); |
f24e9980 | 108 | |
3ff5f385 | 109 | return 0; |
f24e9980 SW |
110 | } |
111 | ||
c54d47bf AE |
112 | static void ceph_osd_data_init(struct ceph_osd_data *osd_data) |
113 | { | |
114 | memset(osd_data, 0, sizeof (*osd_data)); | |
115 | osd_data->type = CEPH_OSD_DATA_TYPE_NONE; | |
116 | } | |
117 | ||
a4ce40a9 | 118 | static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
119 | struct page **pages, u64 length, u32 alignment, |
120 | bool pages_from_pool, bool own_pages) | |
121 | { | |
122 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; | |
123 | osd_data->pages = pages; | |
124 | osd_data->length = length; | |
125 | osd_data->alignment = alignment; | |
126 | osd_data->pages_from_pool = pages_from_pool; | |
127 | osd_data->own_pages = own_pages; | |
128 | } | |
43bfe5de | 129 | |
a4ce40a9 | 130 | static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
131 | struct ceph_pagelist *pagelist) |
132 | { | |
133 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; | |
134 | osd_data->pagelist = pagelist; | |
135 | } | |
43bfe5de AE |
136 | |
137 | #ifdef CONFIG_BLOCK | |
a4ce40a9 | 138 | static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
139 | struct bio *bio, size_t bio_length) |
140 | { | |
141 | osd_data->type = CEPH_OSD_DATA_TYPE_BIO; | |
142 | osd_data->bio = bio; | |
143 | osd_data->bio_length = bio_length; | |
144 | } | |
43bfe5de AE |
145 | #endif /* CONFIG_BLOCK */ |
146 | ||
8a703a38 IC |
147 | #define osd_req_op_data(oreq, whch, typ, fld) \ |
148 | ({ \ | |
149 | struct ceph_osd_request *__oreq = (oreq); \ | |
150 | unsigned int __whch = (whch); \ | |
151 | BUG_ON(__whch >= __oreq->r_num_ops); \ | |
152 | &__oreq->r_ops[__whch].typ.fld; \ | |
153 | }) | |
863c7eb5 | 154 | |
49719778 AE |
155 | static struct ceph_osd_data * |
156 | osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) | |
157 | { | |
158 | BUG_ON(which >= osd_req->r_num_ops); | |
159 | ||
160 | return &osd_req->r_ops[which].raw_data_in; | |
161 | } | |
162 | ||
a4ce40a9 AE |
163 | struct ceph_osd_data * |
164 | osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, | |
406e2c9f | 165 | unsigned int which) |
a4ce40a9 | 166 | { |
863c7eb5 | 167 | return osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
168 | } |
169 | EXPORT_SYMBOL(osd_req_op_extent_osd_data); | |
170 | ||
49719778 AE |
171 | void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, |
172 | unsigned int which, struct page **pages, | |
173 | u64 length, u32 alignment, | |
174 | bool pages_from_pool, bool own_pages) | |
175 | { | |
176 | struct ceph_osd_data *osd_data; | |
177 | ||
178 | osd_data = osd_req_op_raw_data_in(osd_req, which); | |
179 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
180 | pages_from_pool, own_pages); | |
181 | } | |
182 | EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); | |
183 | ||
a4ce40a9 | 184 | void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, |
406e2c9f AE |
185 | unsigned int which, struct page **pages, |
186 | u64 length, u32 alignment, | |
a4ce40a9 AE |
187 | bool pages_from_pool, bool own_pages) |
188 | { | |
189 | struct ceph_osd_data *osd_data; | |
190 | ||
863c7eb5 | 191 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
192 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
193 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
194 | } |
195 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); | |
196 | ||
197 | void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, | |
406e2c9f | 198 | unsigned int which, struct ceph_pagelist *pagelist) |
a4ce40a9 AE |
199 | { |
200 | struct ceph_osd_data *osd_data; | |
201 | ||
863c7eb5 | 202 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 | 203 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
204 | } |
205 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); | |
206 | ||
207 | #ifdef CONFIG_BLOCK | |
208 | void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, | |
406e2c9f | 209 | unsigned int which, struct bio *bio, size_t bio_length) |
a4ce40a9 AE |
210 | { |
211 | struct ceph_osd_data *osd_data; | |
863c7eb5 AE |
212 | |
213 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); | |
a4ce40a9 | 214 | ceph_osd_data_bio_init(osd_data, bio, bio_length); |
a4ce40a9 AE |
215 | } |
216 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); | |
217 | #endif /* CONFIG_BLOCK */ | |
218 | ||
219 | static void osd_req_op_cls_request_info_pagelist( | |
220 | struct ceph_osd_request *osd_req, | |
221 | unsigned int which, struct ceph_pagelist *pagelist) | |
222 | { | |
223 | struct ceph_osd_data *osd_data; | |
224 | ||
863c7eb5 | 225 | osd_data = osd_req_op_data(osd_req, which, cls, request_info); |
a4ce40a9 | 226 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
227 | } |
228 | ||
04017e29 AE |
229 | void osd_req_op_cls_request_data_pagelist( |
230 | struct ceph_osd_request *osd_req, | |
231 | unsigned int which, struct ceph_pagelist *pagelist) | |
232 | { | |
233 | struct ceph_osd_data *osd_data; | |
234 | ||
863c7eb5 | 235 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); |
04017e29 | 236 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
bb873b53 ID |
237 | osd_req->r_ops[which].cls.indata_len += pagelist->length; |
238 | osd_req->r_ops[which].indata_len += pagelist->length; | |
04017e29 AE |
239 | } |
240 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); | |
241 | ||
6c57b554 AE |
242 | void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, |
243 | unsigned int which, struct page **pages, u64 length, | |
244 | u32 alignment, bool pages_from_pool, bool own_pages) | |
245 | { | |
246 | struct ceph_osd_data *osd_data; | |
247 | ||
248 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); | |
249 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
250 | pages_from_pool, own_pages); | |
bb873b53 ID |
251 | osd_req->r_ops[which].cls.indata_len += length; |
252 | osd_req->r_ops[which].indata_len += length; | |
6c57b554 AE |
253 | } |
254 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); | |
255 | ||
a4ce40a9 AE |
256 | void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, |
257 | unsigned int which, struct page **pages, u64 length, | |
258 | u32 alignment, bool pages_from_pool, bool own_pages) | |
259 | { | |
260 | struct ceph_osd_data *osd_data; | |
261 | ||
863c7eb5 | 262 | osd_data = osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
263 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
264 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
265 | } |
266 | EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); | |
267 | ||
23c08a9c AE |
268 | static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) |
269 | { | |
270 | switch (osd_data->type) { | |
271 | case CEPH_OSD_DATA_TYPE_NONE: | |
272 | return 0; | |
273 | case CEPH_OSD_DATA_TYPE_PAGES: | |
274 | return osd_data->length; | |
275 | case CEPH_OSD_DATA_TYPE_PAGELIST: | |
276 | return (u64)osd_data->pagelist->length; | |
277 | #ifdef CONFIG_BLOCK | |
278 | case CEPH_OSD_DATA_TYPE_BIO: | |
279 | return (u64)osd_data->bio_length; | |
280 | #endif /* CONFIG_BLOCK */ | |
281 | default: | |
282 | WARN(true, "unrecognized data type %d\n", (int)osd_data->type); | |
283 | return 0; | |
284 | } | |
285 | } | |
286 | ||
c54d47bf AE |
287 | static void ceph_osd_data_release(struct ceph_osd_data *osd_data) |
288 | { | |
5476492f | 289 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { |
c54d47bf AE |
290 | int num_pages; |
291 | ||
292 | num_pages = calc_pages_for((u64)osd_data->alignment, | |
293 | (u64)osd_data->length); | |
294 | ceph_release_page_vector(osd_data->pages, num_pages); | |
295 | } | |
5476492f AE |
296 | ceph_osd_data_init(osd_data); |
297 | } | |
298 | ||
299 | static void osd_req_op_data_release(struct ceph_osd_request *osd_req, | |
300 | unsigned int which) | |
301 | { | |
302 | struct ceph_osd_req_op *op; | |
303 | ||
304 | BUG_ON(which >= osd_req->r_num_ops); | |
305 | op = &osd_req->r_ops[which]; | |
306 | ||
307 | switch (op->op) { | |
308 | case CEPH_OSD_OP_READ: | |
309 | case CEPH_OSD_OP_WRITE: | |
e30b7577 | 310 | case CEPH_OSD_OP_WRITEFULL: |
5476492f AE |
311 | ceph_osd_data_release(&op->extent.osd_data); |
312 | break; | |
313 | case CEPH_OSD_OP_CALL: | |
314 | ceph_osd_data_release(&op->cls.request_info); | |
04017e29 | 315 | ceph_osd_data_release(&op->cls.request_data); |
5476492f AE |
316 | ceph_osd_data_release(&op->cls.response_data); |
317 | break; | |
d74b50be YZ |
318 | case CEPH_OSD_OP_SETXATTR: |
319 | case CEPH_OSD_OP_CMPXATTR: | |
320 | ceph_osd_data_release(&op->xattr.osd_data); | |
321 | break; | |
66ba609f YZ |
322 | case CEPH_OSD_OP_STAT: |
323 | ceph_osd_data_release(&op->raw_data_in); | |
324 | break; | |
5476492f AE |
325 | default: |
326 | break; | |
327 | } | |
c54d47bf AE |
328 | } |
329 | ||
63244fa1 ID |
330 | /* |
331 | * Assumes @t is zero-initialized. | |
332 | */ | |
333 | static void target_init(struct ceph_osd_request_target *t) | |
334 | { | |
335 | ceph_oid_init(&t->base_oid); | |
336 | ceph_oloc_init(&t->base_oloc); | |
337 | ceph_oid_init(&t->target_oid); | |
338 | ceph_oloc_init(&t->target_oloc); | |
339 | ||
340 | ceph_osds_init(&t->acting); | |
341 | ceph_osds_init(&t->up); | |
342 | t->size = -1; | |
343 | t->min_size = -1; | |
344 | ||
345 | t->osd = CEPH_HOMELESS_OSD; | |
346 | } | |
347 | ||
348 | static void target_destroy(struct ceph_osd_request_target *t) | |
349 | { | |
350 | ceph_oid_destroy(&t->base_oid); | |
351 | ceph_oid_destroy(&t->target_oid); | |
352 | } | |
353 | ||
f24e9980 SW |
354 | /* |
355 | * requests | |
356 | */ | |
9e94af20 | 357 | static void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 358 | { |
9e94af20 ID |
359 | struct ceph_osd_request *req = container_of(kref, |
360 | struct ceph_osd_request, r_kref); | |
5476492f | 361 | unsigned int which; |
415e49a9 | 362 | |
9e94af20 ID |
363 | dout("%s %p (r_request %p r_reply %p)\n", __func__, req, |
364 | req->r_request, req->r_reply); | |
6562d661 | 365 | WARN_ON(!RB_EMPTY_NODE(&req->r_node)); |
6562d661 ID |
366 | WARN_ON(!list_empty(&req->r_linger_item)); |
367 | WARN_ON(!list_empty(&req->r_linger_osd_item)); | |
368 | WARN_ON(req->r_osd); | |
9e94af20 | 369 | |
415e49a9 SW |
370 | if (req->r_request) |
371 | ceph_msg_put(req->r_request); | |
5aea3dcd | 372 | if (req->r_reply) |
ab8cb34a | 373 | ceph_msg_put(req->r_reply); |
0fff87ec | 374 | |
5476492f AE |
375 | for (which = 0; which < req->r_num_ops; which++) |
376 | osd_req_op_data_release(req, which); | |
0fff87ec | 377 | |
a66dd383 | 378 | target_destroy(&req->r_t); |
415e49a9 | 379 | ceph_put_snap_context(req->r_snapc); |
d30291b9 | 380 | |
415e49a9 SW |
381 | if (req->r_mempool) |
382 | mempool_free(req, req->r_osdc->req_mempool); | |
3f1af42a | 383 | else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) |
5522ae0b | 384 | kmem_cache_free(ceph_osd_request_cache, req); |
3f1af42a ID |
385 | else |
386 | kfree(req); | |
f24e9980 | 387 | } |
9e94af20 ID |
388 | |
389 | void ceph_osdc_get_request(struct ceph_osd_request *req) | |
390 | { | |
391 | dout("%s %p (was %d)\n", __func__, req, | |
392 | atomic_read(&req->r_kref.refcount)); | |
393 | kref_get(&req->r_kref); | |
394 | } | |
395 | EXPORT_SYMBOL(ceph_osdc_get_request); | |
396 | ||
397 | void ceph_osdc_put_request(struct ceph_osd_request *req) | |
398 | { | |
3ed97d63 ID |
399 | if (req) { |
400 | dout("%s %p (was %d)\n", __func__, req, | |
401 | atomic_read(&req->r_kref.refcount)); | |
402 | kref_put(&req->r_kref, ceph_osdc_release_request); | |
403 | } | |
9e94af20 ID |
404 | } |
405 | EXPORT_SYMBOL(ceph_osdc_put_request); | |
68b4476b | 406 | |
3499e8a5 | 407 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 408 | struct ceph_snap_context *snapc, |
1b83bef2 | 409 | unsigned int num_ops, |
3499e8a5 | 410 | bool use_mempool, |
54a54007 | 411 | gfp_t gfp_flags) |
f24e9980 SW |
412 | { |
413 | struct ceph_osd_request *req; | |
1b83bef2 | 414 | |
f24e9980 | 415 | if (use_mempool) { |
3f1af42a | 416 | BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); |
3499e8a5 | 417 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
3f1af42a ID |
418 | } else if (num_ops <= CEPH_OSD_SLAB_OPS) { |
419 | req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); | |
f24e9980 | 420 | } else { |
3f1af42a ID |
421 | BUG_ON(num_ops > CEPH_OSD_MAX_OPS); |
422 | req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), | |
423 | gfp_flags); | |
f24e9980 | 424 | } |
3f1af42a | 425 | if (unlikely(!req)) |
a79832f2 | 426 | return NULL; |
f24e9980 | 427 | |
3f1af42a ID |
428 | /* req only, each op is zeroed in _osd_req_op_init() */ |
429 | memset(req, 0, sizeof(*req)); | |
430 | ||
f24e9980 SW |
431 | req->r_osdc = osdc; |
432 | req->r_mempool = use_mempool; | |
79528734 | 433 | req->r_num_ops = num_ops; |
84127282 ID |
434 | req->r_snapid = CEPH_NOSNAP; |
435 | req->r_snapc = ceph_get_snap_context(snapc); | |
68b4476b | 436 | |
415e49a9 | 437 | kref_init(&req->r_kref); |
f24e9980 SW |
438 | init_completion(&req->r_completion); |
439 | init_completion(&req->r_safe_completion); | |
a978fa20 | 440 | RB_CLEAR_NODE(&req->r_node); |
f24e9980 | 441 | INIT_LIST_HEAD(&req->r_unsafe_item); |
a40c4f10 | 442 | INIT_LIST_HEAD(&req->r_linger_item); |
1d0326b1 | 443 | INIT_LIST_HEAD(&req->r_linger_osd_item); |
cd43045c | 444 | |
a66dd383 | 445 | target_init(&req->r_t); |
22116525 | 446 | |
13d1ad16 ID |
447 | dout("%s req %p\n", __func__, req); |
448 | return req; | |
449 | } | |
450 | EXPORT_SYMBOL(ceph_osdc_alloc_request); | |
3f1af42a | 451 | |
13d1ad16 ID |
452 | int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) |
453 | { | |
454 | struct ceph_osd_client *osdc = req->r_osdc; | |
455 | struct ceph_msg *msg; | |
456 | int msg_size; | |
c16e7869 | 457 | |
d30291b9 ID |
458 | WARN_ON(ceph_oid_empty(&req->r_base_oid)); |
459 | ||
13d1ad16 | 460 | /* create request message */ |
ae458f5a ID |
461 | msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ |
462 | msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ | |
463 | msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ | |
464 | msg_size += 1 + 8 + 4 + 4; /* pgid */ | |
13d1ad16 ID |
465 | msg_size += 4 + req->r_base_oid.name_len; /* oid */ |
466 | msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); | |
ae458f5a ID |
467 | msg_size += 8; /* snapid */ |
468 | msg_size += 8; /* snap_seq */ | |
13d1ad16 | 469 | msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); |
ae458f5a ID |
470 | msg_size += 4; /* retry_attempt */ |
471 | ||
13d1ad16 | 472 | if (req->r_mempool) |
8f3bc053 | 473 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 474 | else |
13d1ad16 ID |
475 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); |
476 | if (!msg) | |
477 | return -ENOMEM; | |
68b4476b | 478 | |
f24e9980 | 479 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 | 480 | req->r_request = msg; |
3499e8a5 | 481 | |
13d1ad16 ID |
482 | /* create reply message */ |
483 | msg_size = OSD_OPREPLY_FRONT_LEN; | |
711da55d ID |
484 | msg_size += req->r_base_oid.name_len; |
485 | msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); | |
13d1ad16 ID |
486 | |
487 | if (req->r_mempool) | |
488 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
489 | else | |
490 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); | |
491 | if (!msg) | |
492 | return -ENOMEM; | |
493 | ||
494 | req->r_reply = msg; | |
495 | ||
496 | return 0; | |
3499e8a5 | 497 | } |
13d1ad16 | 498 | EXPORT_SYMBOL(ceph_osdc_alloc_messages); |
3499e8a5 | 499 | |
a8dd0a37 | 500 | static bool osd_req_opcode_valid(u16 opcode) |
68b4476b | 501 | { |
a8dd0a37 | 502 | switch (opcode) { |
70b5bfa3 ID |
503 | #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; |
504 | __CEPH_FORALL_OSD_OPS(GENERATE_CASE) | |
505 | #undef GENERATE_CASE | |
a8dd0a37 AE |
506 | default: |
507 | return false; | |
508 | } | |
509 | } | |
510 | ||
33803f33 AE |
511 | /* |
512 | * This is an osd op init function for opcodes that have no data or | |
513 | * other information associated with them. It also serves as a | |
514 | * common init routine for all the other init functions, below. | |
515 | */ | |
c99d2d4a | 516 | static struct ceph_osd_req_op * |
49719778 | 517 | _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, |
144cba14 | 518 | u16 opcode, u32 flags) |
33803f33 | 519 | { |
c99d2d4a AE |
520 | struct ceph_osd_req_op *op; |
521 | ||
522 | BUG_ON(which >= osd_req->r_num_ops); | |
33803f33 AE |
523 | BUG_ON(!osd_req_opcode_valid(opcode)); |
524 | ||
c99d2d4a | 525 | op = &osd_req->r_ops[which]; |
33803f33 | 526 | memset(op, 0, sizeof (*op)); |
33803f33 | 527 | op->op = opcode; |
144cba14 | 528 | op->flags = flags; |
c99d2d4a AE |
529 | |
530 | return op; | |
33803f33 AE |
531 | } |
532 | ||
49719778 | 533 | void osd_req_op_init(struct ceph_osd_request *osd_req, |
144cba14 | 534 | unsigned int which, u16 opcode, u32 flags) |
49719778 | 535 | { |
144cba14 | 536 | (void)_osd_req_op_init(osd_req, which, opcode, flags); |
49719778 AE |
537 | } |
538 | EXPORT_SYMBOL(osd_req_op_init); | |
539 | ||
c99d2d4a AE |
540 | void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
541 | unsigned int which, u16 opcode, | |
33803f33 AE |
542 | u64 offset, u64 length, |
543 | u64 truncate_size, u32 truncate_seq) | |
544 | { | |
144cba14 YZ |
545 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
546 | opcode, 0); | |
33803f33 AE |
547 | size_t payload_len = 0; |
548 | ||
ad7a60de | 549 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
e30b7577 ID |
550 | opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && |
551 | opcode != CEPH_OSD_OP_TRUNCATE); | |
33803f33 | 552 | |
33803f33 AE |
553 | op->extent.offset = offset; |
554 | op->extent.length = length; | |
555 | op->extent.truncate_size = truncate_size; | |
556 | op->extent.truncate_seq = truncate_seq; | |
e30b7577 | 557 | if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) |
33803f33 AE |
558 | payload_len += length; |
559 | ||
de2aa102 | 560 | op->indata_len = payload_len; |
33803f33 AE |
561 | } |
562 | EXPORT_SYMBOL(osd_req_op_extent_init); | |
563 | ||
c99d2d4a AE |
564 | void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
565 | unsigned int which, u64 length) | |
e5975c7c | 566 | { |
c99d2d4a AE |
567 | struct ceph_osd_req_op *op; |
568 | u64 previous; | |
569 | ||
570 | BUG_ON(which >= osd_req->r_num_ops); | |
571 | op = &osd_req->r_ops[which]; | |
572 | previous = op->extent.length; | |
e5975c7c AE |
573 | |
574 | if (length == previous) | |
575 | return; /* Nothing to do */ | |
576 | BUG_ON(length > previous); | |
577 | ||
578 | op->extent.length = length; | |
de2aa102 | 579 | op->indata_len -= previous - length; |
e5975c7c AE |
580 | } |
581 | EXPORT_SYMBOL(osd_req_op_extent_update); | |
582 | ||
2c63f49a YZ |
583 | void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, |
584 | unsigned int which, u64 offset_inc) | |
585 | { | |
586 | struct ceph_osd_req_op *op, *prev_op; | |
587 | ||
588 | BUG_ON(which + 1 >= osd_req->r_num_ops); | |
589 | ||
590 | prev_op = &osd_req->r_ops[which]; | |
591 | op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); | |
592 | /* dup previous one */ | |
593 | op->indata_len = prev_op->indata_len; | |
594 | op->outdata_len = prev_op->outdata_len; | |
595 | op->extent = prev_op->extent; | |
596 | /* adjust offset */ | |
597 | op->extent.offset += offset_inc; | |
598 | op->extent.length -= offset_inc; | |
599 | ||
600 | if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) | |
601 | op->indata_len -= offset_inc; | |
602 | } | |
603 | EXPORT_SYMBOL(osd_req_op_extent_dup_last); | |
604 | ||
c99d2d4a | 605 | void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, |
04017e29 | 606 | u16 opcode, const char *class, const char *method) |
33803f33 | 607 | { |
144cba14 YZ |
608 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
609 | opcode, 0); | |
5f562df5 | 610 | struct ceph_pagelist *pagelist; |
33803f33 AE |
611 | size_t payload_len = 0; |
612 | size_t size; | |
613 | ||
614 | BUG_ON(opcode != CEPH_OSD_OP_CALL); | |
615 | ||
5f562df5 AE |
616 | pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); |
617 | BUG_ON(!pagelist); | |
618 | ceph_pagelist_init(pagelist); | |
619 | ||
33803f33 AE |
620 | op->cls.class_name = class; |
621 | size = strlen(class); | |
622 | BUG_ON(size > (size_t) U8_MAX); | |
623 | op->cls.class_len = size; | |
5f562df5 | 624 | ceph_pagelist_append(pagelist, class, size); |
33803f33 AE |
625 | payload_len += size; |
626 | ||
627 | op->cls.method_name = method; | |
628 | size = strlen(method); | |
629 | BUG_ON(size > (size_t) U8_MAX); | |
630 | op->cls.method_len = size; | |
5f562df5 | 631 | ceph_pagelist_append(pagelist, method, size); |
33803f33 AE |
632 | payload_len += size; |
633 | ||
a4ce40a9 | 634 | osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); |
5f562df5 | 635 | |
de2aa102 | 636 | op->indata_len = payload_len; |
33803f33 AE |
637 | } |
638 | EXPORT_SYMBOL(osd_req_op_cls_init); | |
8c042b0d | 639 | |
d74b50be YZ |
640 | int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, |
641 | u16 opcode, const char *name, const void *value, | |
642 | size_t size, u8 cmp_op, u8 cmp_mode) | |
643 | { | |
144cba14 YZ |
644 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
645 | opcode, 0); | |
d74b50be YZ |
646 | struct ceph_pagelist *pagelist; |
647 | size_t payload_len; | |
648 | ||
649 | BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); | |
650 | ||
651 | pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); | |
652 | if (!pagelist) | |
653 | return -ENOMEM; | |
654 | ||
655 | ceph_pagelist_init(pagelist); | |
656 | ||
657 | payload_len = strlen(name); | |
658 | op->xattr.name_len = payload_len; | |
659 | ceph_pagelist_append(pagelist, name, payload_len); | |
660 | ||
661 | op->xattr.value_len = size; | |
662 | ceph_pagelist_append(pagelist, value, size); | |
663 | payload_len += size; | |
664 | ||
665 | op->xattr.cmp_op = cmp_op; | |
666 | op->xattr.cmp_mode = cmp_mode; | |
667 | ||
668 | ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); | |
de2aa102 | 669 | op->indata_len = payload_len; |
d74b50be YZ |
670 | return 0; |
671 | } | |
672 | EXPORT_SYMBOL(osd_req_op_xattr_init); | |
673 | ||
c99d2d4a AE |
674 | void osd_req_op_watch_init(struct ceph_osd_request *osd_req, |
675 | unsigned int which, u16 opcode, | |
33803f33 AE |
676 | u64 cookie, u64 version, int flag) |
677 | { | |
144cba14 YZ |
678 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
679 | opcode, 0); | |
33803f33 | 680 | |
c99d2d4a | 681 | BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); |
33803f33 AE |
682 | |
683 | op->watch.cookie = cookie; | |
9ef1ee5a | 684 | op->watch.ver = version; |
33803f33 | 685 | if (opcode == CEPH_OSD_OP_WATCH && flag) |
c99d2d4a | 686 | op->watch.flag = (u8)1; |
33803f33 AE |
687 | } |
688 | EXPORT_SYMBOL(osd_req_op_watch_init); | |
689 | ||
c647b8a8 ID |
690 | void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, |
691 | unsigned int which, | |
692 | u64 expected_object_size, | |
693 | u64 expected_write_size) | |
694 | { | |
695 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, | |
144cba14 YZ |
696 | CEPH_OSD_OP_SETALLOCHINT, |
697 | 0); | |
c647b8a8 ID |
698 | |
699 | op->alloc_hint.expected_object_size = expected_object_size; | |
700 | op->alloc_hint.expected_write_size = expected_write_size; | |
701 | ||
702 | /* | |
703 | * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed | |
704 | * not worth a feature bit. Set FAILOK per-op flag to make | |
705 | * sure older osds don't trip over an unsupported opcode. | |
706 | */ | |
707 | op->flags |= CEPH_OSD_OP_FLAG_FAILOK; | |
708 | } | |
709 | EXPORT_SYMBOL(osd_req_op_alloc_hint_init); | |
710 | ||
90af3602 | 711 | static void ceph_osdc_msg_data_add(struct ceph_msg *msg, |
ec9123c5 AE |
712 | struct ceph_osd_data *osd_data) |
713 | { | |
714 | u64 length = ceph_osd_data_length(osd_data); | |
715 | ||
716 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { | |
717 | BUG_ON(length > (u64) SIZE_MAX); | |
718 | if (length) | |
90af3602 | 719 | ceph_msg_data_add_pages(msg, osd_data->pages, |
ec9123c5 AE |
720 | length, osd_data->alignment); |
721 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { | |
722 | BUG_ON(!length); | |
90af3602 | 723 | ceph_msg_data_add_pagelist(msg, osd_data->pagelist); |
ec9123c5 AE |
724 | #ifdef CONFIG_BLOCK |
725 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { | |
90af3602 | 726 | ceph_msg_data_add_bio(msg, osd_data->bio, length); |
ec9123c5 AE |
727 | #endif |
728 | } else { | |
729 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); | |
730 | } | |
731 | } | |
732 | ||
bb873b53 ID |
733 | static u32 osd_req_encode_op(struct ceph_osd_op *dst, |
734 | const struct ceph_osd_req_op *src) | |
a8dd0a37 | 735 | { |
a8dd0a37 AE |
736 | if (WARN_ON(!osd_req_opcode_valid(src->op))) { |
737 | pr_err("unrecognized osd opcode %d\n", src->op); | |
738 | ||
739 | return 0; | |
740 | } | |
741 | ||
742 | switch (src->op) { | |
743 | case CEPH_OSD_OP_STAT: | |
744 | break; | |
745 | case CEPH_OSD_OP_READ: | |
746 | case CEPH_OSD_OP_WRITE: | |
e30b7577 | 747 | case CEPH_OSD_OP_WRITEFULL: |
ad7a60de | 748 | case CEPH_OSD_OP_ZERO: |
ad7a60de | 749 | case CEPH_OSD_OP_TRUNCATE: |
a8dd0a37 AE |
750 | dst->extent.offset = cpu_to_le64(src->extent.offset); |
751 | dst->extent.length = cpu_to_le64(src->extent.length); | |
752 | dst->extent.truncate_size = | |
753 | cpu_to_le64(src->extent.truncate_size); | |
754 | dst->extent.truncate_seq = | |
755 | cpu_to_le32(src->extent.truncate_seq); | |
756 | break; | |
757 | case CEPH_OSD_OP_CALL: | |
a8dd0a37 AE |
758 | dst->cls.class_len = src->cls.class_len; |
759 | dst->cls.method_len = src->cls.method_len; | |
bb873b53 | 760 | dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); |
a8dd0a37 AE |
761 | break; |
762 | case CEPH_OSD_OP_STARTSYNC: | |
763 | break; | |
764 | case CEPH_OSD_OP_NOTIFY_ACK: | |
765 | case CEPH_OSD_OP_WATCH: | |
766 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
767 | dst->watch.ver = cpu_to_le64(src->watch.ver); | |
768 | dst->watch.flag = src->watch.flag; | |
769 | break; | |
c647b8a8 ID |
770 | case CEPH_OSD_OP_SETALLOCHINT: |
771 | dst->alloc_hint.expected_object_size = | |
772 | cpu_to_le64(src->alloc_hint.expected_object_size); | |
773 | dst->alloc_hint.expected_write_size = | |
774 | cpu_to_le64(src->alloc_hint.expected_write_size); | |
775 | break; | |
d74b50be YZ |
776 | case CEPH_OSD_OP_SETXATTR: |
777 | case CEPH_OSD_OP_CMPXATTR: | |
778 | dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); | |
779 | dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); | |
780 | dst->xattr.cmp_op = src->xattr.cmp_op; | |
781 | dst->xattr.cmp_mode = src->xattr.cmp_mode; | |
d74b50be | 782 | break; |
864e9197 YZ |
783 | case CEPH_OSD_OP_CREATE: |
784 | case CEPH_OSD_OP_DELETE: | |
785 | break; | |
a8dd0a37 | 786 | default: |
4c46459c | 787 | pr_err("unsupported osd opcode %s\n", |
8f63ca2d | 788 | ceph_osd_op_name(src->op)); |
4c46459c | 789 | WARN_ON(1); |
a8dd0a37 AE |
790 | |
791 | return 0; | |
68b4476b | 792 | } |
7b25bf5f | 793 | |
a8dd0a37 | 794 | dst->op = cpu_to_le16(src->op); |
7b25bf5f | 795 | dst->flags = cpu_to_le32(src->flags); |
de2aa102 | 796 | dst->payload_len = cpu_to_le32(src->indata_len); |
175face2 | 797 | |
bb873b53 | 798 | return src->indata_len; |
68b4476b YS |
799 | } |
800 | ||
3499e8a5 YS |
801 | /* |
802 | * build new request AND message, calculate layout, and adjust file | |
803 | * extent as needed. | |
804 | * | |
805 | * if the file was recently truncated, we include information about its | |
806 | * old and new size so that the object can be updated appropriately. (we | |
807 | * avoid synchronously deleting truncated objects because it's slow.) | |
808 | * | |
809 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
810 | * data quickly. | |
811 | */ | |
812 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
813 | struct ceph_file_layout *layout, | |
814 | struct ceph_vino vino, | |
715e4cd4 YZ |
815 | u64 off, u64 *plen, |
816 | unsigned int which, int num_ops, | |
3499e8a5 YS |
817 | int opcode, int flags, |
818 | struct ceph_snap_context *snapc, | |
3499e8a5 YS |
819 | u32 truncate_seq, |
820 | u64 truncate_size, | |
153e5167 | 821 | bool use_mempool) |
3499e8a5 | 822 | { |
68b4476b | 823 | struct ceph_osd_request *req; |
75d1c941 AE |
824 | u64 objnum = 0; |
825 | u64 objoff = 0; | |
826 | u64 objlen = 0; | |
6816282d | 827 | int r; |
68b4476b | 828 | |
ad7a60de | 829 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
864e9197 YZ |
830 | opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && |
831 | opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); | |
68b4476b | 832 | |
acead002 | 833 | req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, |
ae7ca4a3 | 834 | GFP_NOFS); |
13d1ad16 ID |
835 | if (!req) { |
836 | r = -ENOMEM; | |
837 | goto fail; | |
838 | } | |
79528734 | 839 | |
3499e8a5 | 840 | /* calculate max write size */ |
a19dadfb | 841 | r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); |
13d1ad16 ID |
842 | if (r) |
843 | goto fail; | |
a19dadfb | 844 | |
864e9197 | 845 | if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { |
144cba14 | 846 | osd_req_op_init(req, which, opcode, 0); |
864e9197 YZ |
847 | } else { |
848 | u32 object_size = le32_to_cpu(layout->fl_object_size); | |
849 | u32 object_base = off - objoff; | |
850 | if (!(truncate_seq == 1 && truncate_size == -1ULL)) { | |
851 | if (truncate_size <= object_base) { | |
852 | truncate_size = 0; | |
853 | } else { | |
854 | truncate_size -= object_base; | |
855 | if (truncate_size > object_size) | |
856 | truncate_size = object_size; | |
857 | } | |
ccca4e37 | 858 | } |
715e4cd4 | 859 | osd_req_op_extent_init(req, which, opcode, objoff, objlen, |
864e9197 YZ |
860 | truncate_size, truncate_seq); |
861 | } | |
d18d1e28 | 862 | |
bb873b53 | 863 | req->r_flags = flags; |
3c972c95 | 864 | req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); |
d30291b9 | 865 | ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); |
dbe0fc41 | 866 | |
bb873b53 ID |
867 | req->r_snapid = vino.snap; |
868 | if (flags & CEPH_OSD_FLAG_WRITE) | |
869 | req->r_data_offset = off; | |
870 | ||
13d1ad16 ID |
871 | r = ceph_osdc_alloc_messages(req, GFP_NOFS); |
872 | if (r) | |
873 | goto fail; | |
874 | ||
f24e9980 | 875 | return req; |
13d1ad16 ID |
876 | |
877 | fail: | |
878 | ceph_osdc_put_request(req); | |
879 | return ERR_PTR(r); | |
f24e9980 | 880 | } |
3d14c5d2 | 881 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
882 | |
883 | /* | |
884 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
885 | */ | |
fcd00b68 | 886 | DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) |
f24e9980 | 887 | |
0247a0cf ID |
888 | static bool osd_homeless(struct ceph_osd *osd) |
889 | { | |
890 | return osd->o_osd == CEPH_HOMELESS_OSD; | |
891 | } | |
892 | ||
5aea3dcd | 893 | static bool osd_registered(struct ceph_osd *osd) |
f24e9980 | 894 | { |
5aea3dcd | 895 | verify_osdc_locked(osd->o_osdc); |
f24e9980 | 896 | |
5aea3dcd | 897 | return !RB_EMPTY_NODE(&osd->o_node); |
f24e9980 SW |
898 | } |
899 | ||
0247a0cf ID |
900 | /* |
901 | * Assumes @osd is zero-initialized. | |
902 | */ | |
903 | static void osd_init(struct ceph_osd *osd) | |
904 | { | |
905 | atomic_set(&osd->o_ref, 1); | |
906 | RB_CLEAR_NODE(&osd->o_node); | |
5aea3dcd | 907 | osd->o_requests = RB_ROOT; |
0247a0cf ID |
908 | INIT_LIST_HEAD(&osd->o_linger_requests); |
909 | INIT_LIST_HEAD(&osd->o_osd_lru); | |
910 | INIT_LIST_HEAD(&osd->o_keepalive_item); | |
911 | osd->o_incarnation = 1; | |
5aea3dcd | 912 | mutex_init(&osd->lock); |
0247a0cf ID |
913 | } |
914 | ||
915 | static void osd_cleanup(struct ceph_osd *osd) | |
916 | { | |
917 | WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); | |
5aea3dcd | 918 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); |
0247a0cf ID |
919 | WARN_ON(!list_empty(&osd->o_linger_requests)); |
920 | WARN_ON(!list_empty(&osd->o_osd_lru)); | |
921 | WARN_ON(!list_empty(&osd->o_keepalive_item)); | |
922 | ||
923 | if (osd->o_auth.authorizer) { | |
924 | WARN_ON(osd_homeless(osd)); | |
925 | ceph_auth_destroy_authorizer(osd->o_auth.authorizer); | |
926 | } | |
927 | } | |
928 | ||
f24e9980 SW |
929 | /* |
930 | * Track open sessions with osds. | |
931 | */ | |
e10006f8 | 932 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
933 | { |
934 | struct ceph_osd *osd; | |
935 | ||
0247a0cf ID |
936 | WARN_ON(onum == CEPH_HOMELESS_OSD); |
937 | ||
7a28f59b | 938 | osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); |
0247a0cf | 939 | osd_init(osd); |
f24e9980 | 940 | osd->o_osdc = osdc; |
e10006f8 | 941 | osd->o_osd = onum; |
f24e9980 | 942 | |
b7a9e5dd | 943 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 944 | |
f24e9980 SW |
945 | return osd; |
946 | } | |
947 | ||
948 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
949 | { | |
950 | if (atomic_inc_not_zero(&osd->o_ref)) { | |
951 | dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, | |
952 | atomic_read(&osd->o_ref)); | |
953 | return osd; | |
954 | } else { | |
955 | dout("get_osd %p FAIL\n", osd); | |
956 | return NULL; | |
957 | } | |
958 | } | |
959 | ||
960 | static void put_osd(struct ceph_osd *osd) | |
961 | { | |
962 | dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), | |
963 | atomic_read(&osd->o_ref) - 1); | |
b28ec2f3 | 964 | if (atomic_dec_and_test(&osd->o_ref)) { |
0247a0cf | 965 | osd_cleanup(osd); |
f24e9980 | 966 | kfree(osd); |
79494d1b | 967 | } |
f24e9980 SW |
968 | } |
969 | ||
fcd00b68 ID |
970 | DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) |
971 | ||
9dd2845c | 972 | static void __move_osd_to_lru(struct ceph_osd *osd) |
f5a2041b | 973 | { |
9dd2845c ID |
974 | struct ceph_osd_client *osdc = osd->o_osdc; |
975 | ||
976 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
f5a2041b | 977 | BUG_ON(!list_empty(&osd->o_osd_lru)); |
bbf37ec3 | 978 | |
9dd2845c | 979 | spin_lock(&osdc->osd_lru_lock); |
f5a2041b | 980 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); |
9dd2845c ID |
981 | spin_unlock(&osdc->osd_lru_lock); |
982 | ||
a319bf56 | 983 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; |
f5a2041b YS |
984 | } |
985 | ||
9dd2845c | 986 | static void maybe_move_osd_to_lru(struct ceph_osd *osd) |
bbf37ec3 | 987 | { |
5aea3dcd | 988 | if (RB_EMPTY_ROOT(&osd->o_requests) && |
bbf37ec3 | 989 | list_empty(&osd->o_linger_requests)) |
9dd2845c | 990 | __move_osd_to_lru(osd); |
bbf37ec3 ID |
991 | } |
992 | ||
f5a2041b YS |
993 | static void __remove_osd_from_lru(struct ceph_osd *osd) |
994 | { | |
9dd2845c ID |
995 | struct ceph_osd_client *osdc = osd->o_osdc; |
996 | ||
997 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
998 | ||
999 | spin_lock(&osdc->osd_lru_lock); | |
f5a2041b YS |
1000 | if (!list_empty(&osd->o_osd_lru)) |
1001 | list_del_init(&osd->o_osd_lru); | |
9dd2845c | 1002 | spin_unlock(&osdc->osd_lru_lock); |
f5a2041b YS |
1003 | } |
1004 | ||
5aea3dcd ID |
1005 | /* |
1006 | * Close the connection and assign any leftover requests to the | |
1007 | * homeless session. | |
1008 | */ | |
1009 | static void close_osd(struct ceph_osd *osd) | |
1010 | { | |
1011 | struct ceph_osd_client *osdc = osd->o_osdc; | |
1012 | struct rb_node *n; | |
1013 | ||
1014 | verify_osdc_wrlocked(osdc); | |
1015 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
1016 | ||
1017 | ceph_con_close(&osd->o_con); | |
1018 | ||
1019 | for (n = rb_first(&osd->o_requests); n; ) { | |
1020 | struct ceph_osd_request *req = | |
1021 | rb_entry(n, struct ceph_osd_request, r_node); | |
1022 | ||
1023 | n = rb_next(n); /* unlink_request() */ | |
1024 | ||
1025 | dout(" reassigning req %p tid %llu\n", req, req->r_tid); | |
1026 | unlink_request(osd, req); | |
1027 | link_request(&osdc->homeless_osd, req); | |
1028 | } | |
1029 | ||
1030 | __remove_osd_from_lru(osd); | |
1031 | erase_osd(&osdc->osds, osd); | |
1032 | put_osd(osd); | |
1033 | } | |
1034 | ||
f24e9980 SW |
1035 | /* |
1036 | * reset osd connect | |
1037 | */ | |
5aea3dcd | 1038 | static int reopen_osd(struct ceph_osd *osd) |
f24e9980 | 1039 | { |
c3acb181 | 1040 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 1041 | |
5aea3dcd ID |
1042 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); |
1043 | ||
1044 | if (RB_EMPTY_ROOT(&osd->o_requests) && | |
a40c4f10 | 1045 | list_empty(&osd->o_linger_requests)) { |
5aea3dcd | 1046 | close_osd(osd); |
c3acb181 AE |
1047 | return -ENODEV; |
1048 | } | |
1049 | ||
5aea3dcd | 1050 | peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; |
c3acb181 AE |
1051 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && |
1052 | !ceph_con_opened(&osd->o_con)) { | |
5aea3dcd | 1053 | struct rb_node *n; |
c3acb181 | 1054 | |
0b4af2e8 ID |
1055 | dout("osd addr hasn't changed and connection never opened, " |
1056 | "letting msgr retry\n"); | |
87b315a5 | 1057 | /* touch each r_stamp for handle_timeout()'s benfit */ |
5aea3dcd ID |
1058 | for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { |
1059 | struct ceph_osd_request *req = | |
1060 | rb_entry(n, struct ceph_osd_request, r_node); | |
87b315a5 | 1061 | req->r_stamp = jiffies; |
5aea3dcd | 1062 | } |
c3acb181 AE |
1063 | |
1064 | return -EAGAIN; | |
f24e9980 | 1065 | } |
c3acb181 AE |
1066 | |
1067 | ceph_con_close(&osd->o_con); | |
1068 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
1069 | osd->o_incarnation++; | |
1070 | ||
1071 | return 0; | |
f24e9980 SW |
1072 | } |
1073 | ||
5aea3dcd ID |
1074 | static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, |
1075 | bool wrlocked) | |
f24e9980 | 1076 | { |
5aea3dcd | 1077 | struct ceph_osd *osd; |
35f9f8a0 | 1078 | |
5aea3dcd ID |
1079 | if (wrlocked) |
1080 | verify_osdc_wrlocked(osdc); | |
1081 | else | |
1082 | verify_osdc_locked(osdc); | |
f24e9980 | 1083 | |
5aea3dcd ID |
1084 | if (o != CEPH_HOMELESS_OSD) |
1085 | osd = lookup_osd(&osdc->osds, o); | |
1086 | else | |
1087 | osd = &osdc->homeless_osd; | |
1088 | if (!osd) { | |
1089 | if (!wrlocked) | |
1090 | return ERR_PTR(-EAGAIN); | |
0ba6478d | 1091 | |
5aea3dcd ID |
1092 | osd = create_osd(osdc, o); |
1093 | insert_osd(&osdc->osds, osd); | |
1094 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, | |
1095 | &osdc->osdmap->osd_addr[osd->o_osd]); | |
0ba6478d | 1096 | } |
f24e9980 | 1097 | |
5aea3dcd ID |
1098 | dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); |
1099 | return osd; | |
f24e9980 SW |
1100 | } |
1101 | ||
1102 | /* | |
5aea3dcd ID |
1103 | * Create request <-> OSD session relation. |
1104 | * | |
1105 | * @req has to be assigned a tid, @osd may be homeless. | |
f24e9980 | 1106 | */ |
5aea3dcd | 1107 | static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) |
f24e9980 | 1108 | { |
5aea3dcd ID |
1109 | verify_osd_locked(osd); |
1110 | WARN_ON(!req->r_tid || req->r_osd); | |
1111 | dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, | |
1112 | req, req->r_tid); | |
1113 | ||
1114 | if (!osd_homeless(osd)) | |
1115 | __remove_osd_from_lru(osd); | |
1116 | else | |
1117 | atomic_inc(&osd->o_osdc->num_homeless); | |
1118 | ||
1119 | get_osd(osd); | |
1120 | insert_request(&osd->o_requests, req); | |
1121 | req->r_osd = osd; | |
f24e9980 SW |
1122 | } |
1123 | ||
5aea3dcd ID |
1124 | static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) |
1125 | { | |
1126 | verify_osd_locked(osd); | |
1127 | WARN_ON(req->r_osd != osd); | |
1128 | dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, | |
1129 | req, req->r_tid); | |
1130 | ||
1131 | req->r_osd = NULL; | |
1132 | erase_request(&osd->o_requests, req); | |
1133 | put_osd(osd); | |
1134 | ||
1135 | if (!osd_homeless(osd)) | |
1136 | maybe_move_osd_to_lru(osd); | |
1137 | else | |
1138 | atomic_dec(&osd->o_osdc->num_homeless); | |
1139 | } | |
1140 | ||
1141 | static void __register_linger_request(struct ceph_osd *osd, | |
a40c4f10 YS |
1142 | struct ceph_osd_request *req) |
1143 | { | |
af593064 ID |
1144 | dout("%s %p tid %llu\n", __func__, req, req->r_tid); |
1145 | WARN_ON(!req->r_linger); | |
1146 | ||
96e4dac6 | 1147 | ceph_osdc_get_request(req); |
5aea3dcd ID |
1148 | list_add_tail(&req->r_linger_item, &osd->o_osdc->req_linger); |
1149 | list_add_tail(&req->r_linger_osd_item, &osd->o_linger_requests); | |
1150 | __remove_osd_from_lru(osd); | |
1151 | req->r_osd = osd; | |
a40c4f10 YS |
1152 | } |
1153 | ||
1154 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
1155 | struct ceph_osd_request *req) | |
1156 | { | |
af593064 ID |
1157 | WARN_ON(!req->r_linger); |
1158 | ||
1159 | if (list_empty(&req->r_linger_item)) { | |
1160 | dout("%s %p tid %llu not registered\n", __func__, req, | |
1161 | req->r_tid); | |
1162 | return; | |
1163 | } | |
1164 | ||
1165 | dout("%s %p tid %llu\n", __func__, req, req->r_tid); | |
61c74035 | 1166 | list_del_init(&req->r_linger_item); |
af593064 | 1167 | |
a40c4f10 | 1168 | if (req->r_osd) { |
1d0326b1 | 1169 | list_del_init(&req->r_linger_osd_item); |
9dd2845c | 1170 | maybe_move_osd_to_lru(req->r_osd); |
5aea3dcd | 1171 | if (RB_EMPTY_ROOT(&req->r_osd->o_requests)) |
fbdb9190 | 1172 | req->r_osd = NULL; |
a40c4f10 | 1173 | } |
96e4dac6 | 1174 | ceph_osdc_put_request(req); |
a40c4f10 YS |
1175 | } |
1176 | ||
a40c4f10 YS |
1177 | void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, |
1178 | struct ceph_osd_request *req) | |
1179 | { | |
1180 | if (!req->r_linger) { | |
1181 | dout("set_request_linger %p\n", req); | |
1182 | req->r_linger = 1; | |
a40c4f10 YS |
1183 | } |
1184 | } | |
1185 | EXPORT_SYMBOL(ceph_osdc_set_request_linger); | |
1186 | ||
63244fa1 ID |
1187 | static bool __pool_full(struct ceph_pg_pool_info *pi) |
1188 | { | |
1189 | return pi->flags & CEPH_POOL_FLAG_FULL; | |
1190 | } | |
1191 | ||
42c1b124 ID |
1192 | static bool have_pool_full(struct ceph_osd_client *osdc) |
1193 | { | |
1194 | struct rb_node *n; | |
1195 | ||
1196 | for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { | |
1197 | struct ceph_pg_pool_info *pi = | |
1198 | rb_entry(n, struct ceph_pg_pool_info, node); | |
1199 | ||
1200 | if (__pool_full(pi)) | |
1201 | return true; | |
1202 | } | |
1203 | ||
1204 | return false; | |
1205 | } | |
1206 | ||
5aea3dcd ID |
1207 | static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) |
1208 | { | |
1209 | struct ceph_pg_pool_info *pi; | |
1210 | ||
1211 | pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); | |
1212 | if (!pi) | |
1213 | return false; | |
1214 | ||
1215 | return __pool_full(pi); | |
1216 | } | |
1217 | ||
d29adb34 JD |
1218 | /* |
1219 | * Returns whether a request should be blocked from being sent | |
1220 | * based on the current osdmap and osd_client settings. | |
d29adb34 | 1221 | */ |
63244fa1 ID |
1222 | static bool target_should_be_paused(struct ceph_osd_client *osdc, |
1223 | const struct ceph_osd_request_target *t, | |
1224 | struct ceph_pg_pool_info *pi) | |
1225 | { | |
1226 | bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); | |
1227 | bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || | |
1228 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || | |
1229 | __pool_full(pi); | |
1230 | ||
1231 | WARN_ON(pi->id != t->base_oloc.pool); | |
1232 | return (t->flags & CEPH_OSD_FLAG_READ && pauserd) || | |
1233 | (t->flags & CEPH_OSD_FLAG_WRITE && pausewr); | |
1234 | } | |
1235 | ||
63244fa1 ID |
1236 | enum calc_target_result { |
1237 | CALC_TARGET_NO_ACTION = 0, | |
1238 | CALC_TARGET_NEED_RESEND, | |
1239 | CALC_TARGET_POOL_DNE, | |
1240 | }; | |
1241 | ||
1242 | static enum calc_target_result calc_target(struct ceph_osd_client *osdc, | |
1243 | struct ceph_osd_request_target *t, | |
1244 | u32 *last_force_resend, | |
1245 | bool any_change) | |
1246 | { | |
1247 | struct ceph_pg_pool_info *pi; | |
1248 | struct ceph_pg pgid, last_pgid; | |
1249 | struct ceph_osds up, acting; | |
1250 | bool force_resend = false; | |
1251 | bool need_check_tiering = false; | |
1252 | bool need_resend = false; | |
1253 | bool sort_bitwise = ceph_osdmap_flag(osdc->osdmap, | |
1254 | CEPH_OSDMAP_SORTBITWISE); | |
1255 | enum calc_target_result ct_res; | |
1256 | int ret; | |
1257 | ||
1258 | pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); | |
1259 | if (!pi) { | |
1260 | t->osd = CEPH_HOMELESS_OSD; | |
1261 | ct_res = CALC_TARGET_POOL_DNE; | |
1262 | goto out; | |
1263 | } | |
1264 | ||
1265 | if (osdc->osdmap->epoch == pi->last_force_request_resend) { | |
1266 | if (last_force_resend && | |
1267 | *last_force_resend < pi->last_force_request_resend) { | |
1268 | *last_force_resend = pi->last_force_request_resend; | |
1269 | force_resend = true; | |
1270 | } else if (!last_force_resend) { | |
1271 | force_resend = true; | |
1272 | } | |
1273 | } | |
1274 | if (ceph_oid_empty(&t->target_oid) || force_resend) { | |
1275 | ceph_oid_copy(&t->target_oid, &t->base_oid); | |
1276 | need_check_tiering = true; | |
1277 | } | |
1278 | if (ceph_oloc_empty(&t->target_oloc) || force_resend) { | |
1279 | ceph_oloc_copy(&t->target_oloc, &t->base_oloc); | |
1280 | need_check_tiering = true; | |
1281 | } | |
1282 | ||
1283 | if (need_check_tiering && | |
1284 | (t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { | |
1285 | if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) | |
1286 | t->target_oloc.pool = pi->read_tier; | |
1287 | if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) | |
1288 | t->target_oloc.pool = pi->write_tier; | |
1289 | } | |
1290 | ||
1291 | ret = ceph_object_locator_to_pg(osdc->osdmap, &t->target_oid, | |
1292 | &t->target_oloc, &pgid); | |
1293 | if (ret) { | |
1294 | WARN_ON(ret != -ENOENT); | |
1295 | t->osd = CEPH_HOMELESS_OSD; | |
1296 | ct_res = CALC_TARGET_POOL_DNE; | |
1297 | goto out; | |
1298 | } | |
1299 | last_pgid.pool = pgid.pool; | |
1300 | last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); | |
1301 | ||
1302 | ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting); | |
1303 | if (any_change && | |
1304 | ceph_is_new_interval(&t->acting, | |
1305 | &acting, | |
1306 | &t->up, | |
1307 | &up, | |
1308 | t->size, | |
1309 | pi->size, | |
1310 | t->min_size, | |
1311 | pi->min_size, | |
1312 | t->pg_num, | |
1313 | pi->pg_num, | |
1314 | t->sort_bitwise, | |
1315 | sort_bitwise, | |
1316 | &last_pgid)) | |
1317 | force_resend = true; | |
1318 | ||
1319 | if (t->paused && !target_should_be_paused(osdc, t, pi)) { | |
1320 | t->paused = false; | |
1321 | need_resend = true; | |
1322 | } | |
1323 | ||
1324 | if (ceph_pg_compare(&t->pgid, &pgid) || | |
1325 | ceph_osds_changed(&t->acting, &acting, any_change) || | |
1326 | force_resend) { | |
1327 | t->pgid = pgid; /* struct */ | |
1328 | ceph_osds_copy(&t->acting, &acting); | |
1329 | ceph_osds_copy(&t->up, &up); | |
1330 | t->size = pi->size; | |
1331 | t->min_size = pi->min_size; | |
1332 | t->pg_num = pi->pg_num; | |
1333 | t->pg_num_mask = pi->pg_num_mask; | |
1334 | t->sort_bitwise = sort_bitwise; | |
1335 | ||
1336 | t->osd = acting.primary; | |
1337 | need_resend = true; | |
1338 | } | |
1339 | ||
1340 | ct_res = need_resend ? CALC_TARGET_NEED_RESEND : CALC_TARGET_NO_ACTION; | |
1341 | out: | |
1342 | dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); | |
1343 | return ct_res; | |
1344 | } | |
1345 | ||
bb873b53 ID |
1346 | static void setup_request_data(struct ceph_osd_request *req, |
1347 | struct ceph_msg *msg) | |
f24e9980 | 1348 | { |
bb873b53 ID |
1349 | u32 data_len = 0; |
1350 | int i; | |
1351 | ||
1352 | if (!list_empty(&msg->data)) | |
1353 | return; | |
f24e9980 | 1354 | |
bb873b53 ID |
1355 | WARN_ON(msg->data_length); |
1356 | for (i = 0; i < req->r_num_ops; i++) { | |
1357 | struct ceph_osd_req_op *op = &req->r_ops[i]; | |
1358 | ||
1359 | switch (op->op) { | |
1360 | /* request */ | |
1361 | case CEPH_OSD_OP_WRITE: | |
1362 | case CEPH_OSD_OP_WRITEFULL: | |
1363 | WARN_ON(op->indata_len != op->extent.length); | |
1364 | ceph_osdc_msg_data_add(msg, &op->extent.osd_data); | |
1365 | break; | |
1366 | case CEPH_OSD_OP_SETXATTR: | |
1367 | case CEPH_OSD_OP_CMPXATTR: | |
1368 | WARN_ON(op->indata_len != op->xattr.name_len + | |
1369 | op->xattr.value_len); | |
1370 | ceph_osdc_msg_data_add(msg, &op->xattr.osd_data); | |
1371 | break; | |
1372 | ||
1373 | /* reply */ | |
1374 | case CEPH_OSD_OP_STAT: | |
1375 | ceph_osdc_msg_data_add(req->r_reply, | |
1376 | &op->raw_data_in); | |
1377 | break; | |
1378 | case CEPH_OSD_OP_READ: | |
1379 | ceph_osdc_msg_data_add(req->r_reply, | |
1380 | &op->extent.osd_data); | |
1381 | break; | |
1382 | ||
1383 | /* both */ | |
1384 | case CEPH_OSD_OP_CALL: | |
1385 | WARN_ON(op->indata_len != op->cls.class_len + | |
1386 | op->cls.method_len + | |
1387 | op->cls.indata_len); | |
1388 | ceph_osdc_msg_data_add(msg, &op->cls.request_info); | |
1389 | /* optional, can be NONE */ | |
1390 | ceph_osdc_msg_data_add(msg, &op->cls.request_data); | |
1391 | /* optional, can be NONE */ | |
1392 | ceph_osdc_msg_data_add(req->r_reply, | |
1393 | &op->cls.response_data); | |
1394 | break; | |
1395 | } | |
1396 | ||
1397 | data_len += op->indata_len; | |
1398 | } | |
1b83bef2 | 1399 | |
bb873b53 ID |
1400 | WARN_ON(data_len != msg->data_length); |
1401 | } | |
1402 | ||
1403 | static void encode_request(struct ceph_osd_request *req, struct ceph_msg *msg) | |
1404 | { | |
1405 | void *p = msg->front.iov_base; | |
1406 | void *const end = p + msg->front_alloc_len; | |
1407 | u32 data_len = 0; | |
1408 | int i; | |
1409 | ||
1410 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) { | |
1411 | /* snapshots aren't writeable */ | |
1412 | WARN_ON(req->r_snapid != CEPH_NOSNAP); | |
1413 | } else { | |
1414 | WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || | |
1415 | req->r_data_offset || req->r_snapc); | |
1416 | } | |
1417 | ||
1418 | setup_request_data(req, msg); | |
1419 | ||
1420 | ceph_encode_32(&p, 1); /* client_inc, always 1 */ | |
1421 | ceph_encode_32(&p, req->r_osdc->osdmap->epoch); | |
1422 | ceph_encode_32(&p, req->r_flags); | |
1423 | ceph_encode_timespec(p, &req->r_mtime); | |
1424 | p += sizeof(struct ceph_timespec); | |
1425 | /* aka reassert_version */ | |
1426 | memcpy(p, &req->r_replay_version, sizeof(req->r_replay_version)); | |
1427 | p += sizeof(req->r_replay_version); | |
1428 | ||
1429 | /* oloc */ | |
1430 | ceph_encode_8(&p, 4); | |
1431 | ceph_encode_8(&p, 4); | |
1432 | ceph_encode_32(&p, 8 + 4 + 4); | |
1433 | ceph_encode_64(&p, req->r_t.target_oloc.pool); | |
1434 | ceph_encode_32(&p, -1); /* preferred */ | |
1435 | ceph_encode_32(&p, 0); /* key len */ | |
1436 | ||
1437 | /* pgid */ | |
1438 | ceph_encode_8(&p, 1); | |
a66dd383 ID |
1439 | ceph_encode_64(&p, req->r_t.pgid.pool); |
1440 | ceph_encode_32(&p, req->r_t.pgid.seed); | |
bb873b53 | 1441 | ceph_encode_32(&p, -1); /* preferred */ |
2169aea6 | 1442 | |
bb873b53 ID |
1443 | /* oid */ |
1444 | ceph_encode_32(&p, req->r_t.target_oid.name_len); | |
1445 | memcpy(p, req->r_t.target_oid.name, req->r_t.target_oid.name_len); | |
1446 | p += req->r_t.target_oid.name_len; | |
f24e9980 | 1447 | |
bb873b53 ID |
1448 | /* ops, can imply data */ |
1449 | ceph_encode_16(&p, req->r_num_ops); | |
1450 | for (i = 0; i < req->r_num_ops; i++) { | |
1451 | data_len += osd_req_encode_op(p, &req->r_ops[i]); | |
1452 | p += sizeof(struct ceph_osd_op); | |
1453 | } | |
26be8808 | 1454 | |
bb873b53 ID |
1455 | ceph_encode_64(&p, req->r_snapid); /* snapid */ |
1456 | if (req->r_snapc) { | |
1457 | ceph_encode_64(&p, req->r_snapc->seq); | |
1458 | ceph_encode_32(&p, req->r_snapc->num_snaps); | |
1459 | for (i = 0; i < req->r_snapc->num_snaps; i++) | |
1460 | ceph_encode_64(&p, req->r_snapc->snaps[i]); | |
1461 | } else { | |
1462 | ceph_encode_64(&p, 0); /* snap_seq */ | |
1463 | ceph_encode_32(&p, 0); /* snaps len */ | |
1464 | } | |
1465 | ||
1466 | ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ | |
1467 | ||
1468 | BUG_ON(p > end); | |
1469 | msg->front.iov_len = p - msg->front.iov_base; | |
1470 | msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ | |
1471 | msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); | |
1472 | msg->hdr.data_len = cpu_to_le32(data_len); | |
1473 | /* | |
1474 | * The header "data_off" is a hint to the receiver allowing it | |
1475 | * to align received data into its buffers such that there's no | |
1476 | * need to re-copy it before writing it to disk (direct I/O). | |
1477 | */ | |
1478 | msg->hdr.data_off = cpu_to_le16(req->r_data_offset); | |
26be8808 | 1479 | |
bb873b53 ID |
1480 | dout("%s req %p oid %*pE oid_len %d front %zu data %u\n", __func__, |
1481 | req, req->r_t.target_oid.name_len, req->r_t.target_oid.name, | |
1482 | req->r_t.target_oid.name_len, msg->front.iov_len, data_len); | |
1483 | } | |
1484 | ||
1485 | /* | |
1486 | * @req has to be assigned a tid and registered. | |
1487 | */ | |
1488 | static void send_request(struct ceph_osd_request *req) | |
1489 | { | |
1490 | struct ceph_osd *osd = req->r_osd; | |
1491 | ||
5aea3dcd | 1492 | verify_osd_locked(osd); |
bb873b53 ID |
1493 | WARN_ON(osd->o_osd != req->r_t.osd); |
1494 | ||
5aea3dcd ID |
1495 | /* |
1496 | * We may have a previously queued request message hanging | |
1497 | * around. Cancel it to avoid corrupting the msgr. | |
1498 | */ | |
1499 | if (req->r_sent) | |
1500 | ceph_msg_revoke(req->r_request); | |
1501 | ||
bb873b53 ID |
1502 | req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; |
1503 | if (req->r_attempts) | |
1504 | req->r_flags |= CEPH_OSD_FLAG_RETRY; | |
1505 | else | |
1506 | WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); | |
1507 | ||
1508 | encode_request(req, req->r_request); | |
1509 | ||
1510 | dout("%s req %p tid %llu to pg %llu.%x osd%d flags 0x%x attempt %d\n", | |
1511 | __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, | |
1512 | req->r_t.osd, req->r_flags, req->r_attempts); | |
1513 | ||
1514 | req->r_t.paused = false; | |
1515 | req->r_stamp = jiffies; | |
1516 | req->r_attempts++; | |
1517 | ||
1518 | req->r_sent = osd->o_incarnation; | |
1519 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); | |
1520 | ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); | |
f24e9980 SW |
1521 | } |
1522 | ||
42c1b124 ID |
1523 | static void maybe_request_map(struct ceph_osd_client *osdc) |
1524 | { | |
1525 | bool continuous = false; | |
1526 | ||
5aea3dcd | 1527 | verify_osdc_locked(osdc); |
42c1b124 ID |
1528 | WARN_ON(!osdc->osdmap->epoch); |
1529 | ||
1530 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || | |
1531 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || | |
1532 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) { | |
1533 | dout("%s osdc %p continuous\n", __func__, osdc); | |
1534 | continuous = true; | |
1535 | } else { | |
1536 | dout("%s osdc %p onetime\n", __func__, osdc); | |
1537 | } | |
1538 | ||
1539 | if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, | |
1540 | osdc->osdmap->epoch + 1, continuous)) | |
1541 | ceph_monc_renew_subs(&osdc->client->monc); | |
1542 | } | |
1543 | ||
5aea3dcd | 1544 | static void __submit_request(struct ceph_osd_request *req, bool wrlocked) |
0bbfdfe8 | 1545 | { |
5aea3dcd ID |
1546 | struct ceph_osd_client *osdc = req->r_osdc; |
1547 | struct ceph_osd *osd; | |
1548 | bool need_send = false; | |
1549 | bool promoted = false; | |
0bbfdfe8 | 1550 | |
5aea3dcd ID |
1551 | WARN_ON(req->r_tid || req->r_got_reply); |
1552 | dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); | |
1553 | ||
1554 | again: | |
1555 | calc_target(osdc, &req->r_t, &req->r_last_force_resend, false); | |
1556 | osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); | |
1557 | if (IS_ERR(osd)) { | |
1558 | WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); | |
1559 | goto promote; | |
0bbfdfe8 ID |
1560 | } |
1561 | ||
5aea3dcd ID |
1562 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && |
1563 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) { | |
1564 | dout("req %p pausewr\n", req); | |
1565 | req->r_t.paused = true; | |
1566 | maybe_request_map(osdc); | |
1567 | } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && | |
1568 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD)) { | |
1569 | dout("req %p pauserd\n", req); | |
1570 | req->r_t.paused = true; | |
1571 | maybe_request_map(osdc); | |
1572 | } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && | |
1573 | !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | | |
1574 | CEPH_OSD_FLAG_FULL_FORCE)) && | |
1575 | (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || | |
1576 | pool_full(osdc, req->r_t.base_oloc.pool))) { | |
1577 | dout("req %p full/pool_full\n", req); | |
1578 | pr_warn_ratelimited("FULL or reached pool quota\n"); | |
1579 | req->r_t.paused = true; | |
1580 | maybe_request_map(osdc); | |
1581 | } else if (!osd_homeless(osd)) { | |
1582 | need_send = true; | |
0bbfdfe8 | 1583 | } else { |
5aea3dcd | 1584 | maybe_request_map(osdc); |
0bbfdfe8 ID |
1585 | } |
1586 | ||
5aea3dcd ID |
1587 | mutex_lock(&osd->lock); |
1588 | /* | |
1589 | * Assign the tid atomically with send_request() to protect | |
1590 | * multiple writes to the same object from racing with each | |
1591 | * other, resulting in out of order ops on the OSDs. | |
1592 | */ | |
1593 | req->r_tid = atomic64_inc_return(&osdc->last_tid); | |
1594 | link_request(osd, req); | |
1595 | if (need_send) | |
1596 | send_request(req); | |
1597 | mutex_unlock(&osd->lock); | |
1598 | ||
1599 | if (promoted) | |
1600 | downgrade_write(&osdc->lock); | |
1601 | return; | |
1602 | ||
1603 | promote: | |
1604 | up_read(&osdc->lock); | |
1605 | down_write(&osdc->lock); | |
1606 | wrlocked = true; | |
1607 | promoted = true; | |
1608 | goto again; | |
1609 | } | |
1610 | ||
1611 | static void account_request(struct ceph_osd_request *req) | |
1612 | { | |
1613 | unsigned int mask = CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK; | |
1614 | ||
1615 | if (req->r_flags & CEPH_OSD_FLAG_READ) { | |
1616 | WARN_ON(req->r_flags & mask); | |
1617 | req->r_flags |= CEPH_OSD_FLAG_ACK; | |
1618 | } else if (req->r_flags & CEPH_OSD_FLAG_WRITE) | |
1619 | WARN_ON(!(req->r_flags & mask)); | |
1620 | else | |
1621 | WARN_ON(1); | |
1622 | ||
1623 | WARN_ON(req->r_unsafe_callback && (req->r_flags & mask) != mask); | |
1624 | atomic_inc(&req->r_osdc->num_requests); | |
1625 | } | |
1626 | ||
1627 | static void submit_request(struct ceph_osd_request *req, bool wrlocked) | |
1628 | { | |
1629 | ceph_osdc_get_request(req); | |
1630 | account_request(req); | |
1631 | __submit_request(req, wrlocked); | |
1632 | } | |
1633 | ||
1634 | static void __finish_request(struct ceph_osd_request *req) | |
1635 | { | |
1636 | struct ceph_osd_client *osdc = req->r_osdc; | |
1637 | struct ceph_osd *osd = req->r_osd; | |
1638 | ||
1639 | verify_osd_locked(osd); | |
1640 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); | |
1641 | ||
1642 | unlink_request(osd, req); | |
1643 | atomic_dec(&osdc->num_requests); | |
1644 | ||
1645 | /* | |
1646 | * If an OSD has failed or returned and a request has been sent | |
1647 | * twice, it's possible to get a reply and end up here while the | |
1648 | * request message is queued for delivery. We will ignore the | |
1649 | * reply, so not a big deal, but better to try and catch it. | |
1650 | */ | |
1651 | ceph_msg_revoke(req->r_request); | |
1652 | ceph_msg_revoke_incoming(req->r_reply); | |
1653 | } | |
1654 | ||
1655 | static void finish_request(struct ceph_osd_request *req) | |
1656 | { | |
1657 | __finish_request(req); | |
1658 | ceph_osdc_put_request(req); | |
0bbfdfe8 ID |
1659 | } |
1660 | ||
fe5da05e ID |
1661 | static void __complete_request(struct ceph_osd_request *req) |
1662 | { | |
1663 | if (req->r_callback) | |
1664 | req->r_callback(req); | |
1665 | else | |
1666 | complete_all(&req->r_completion); | |
1667 | } | |
1668 | ||
5aea3dcd ID |
1669 | static void cancel_request(struct ceph_osd_request *req) |
1670 | { | |
1671 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); | |
1672 | ||
1673 | finish_request(req); | |
1674 | } | |
1675 | ||
f24e9980 | 1676 | /* |
fbca9635 ID |
1677 | * Timeout callback, called every N seconds. When 1 or more OSD |
1678 | * requests has been active for more than N seconds, we send a keepalive | |
1679 | * (tag + timestamp) to its OSD to ensure any communications channel | |
1680 | * reset is detected. | |
f24e9980 SW |
1681 | */ |
1682 | static void handle_timeout(struct work_struct *work) | |
1683 | { | |
1684 | struct ceph_osd_client *osdc = | |
1685 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
a319bf56 | 1686 | struct ceph_options *opts = osdc->client->options; |
5aea3dcd ID |
1687 | unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; |
1688 | LIST_HEAD(slow_osds); | |
1689 | struct rb_node *n, *p; | |
f24e9980 | 1690 | |
5aea3dcd ID |
1691 | dout("%s osdc %p\n", __func__, osdc); |
1692 | down_write(&osdc->lock); | |
f24e9980 | 1693 | |
422d2cb8 YS |
1694 | /* |
1695 | * ping osds that are a bit slow. this ensures that if there | |
1696 | * is a break in the TCP connection we will notice, and reopen | |
1697 | * a connection with that osd (from the fault callback). | |
1698 | */ | |
5aea3dcd ID |
1699 | for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { |
1700 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
1701 | bool found = false; | |
1702 | ||
1703 | for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { | |
1704 | struct ceph_osd_request *req = | |
1705 | rb_entry(p, struct ceph_osd_request, r_node); | |
1706 | ||
1707 | if (time_before(req->r_stamp, cutoff)) { | |
1708 | dout(" req %p tid %llu on osd%d is laggy\n", | |
1709 | req, req->r_tid, osd->o_osd); | |
1710 | found = true; | |
1711 | } | |
1712 | } | |
422d2cb8 | 1713 | |
5aea3dcd ID |
1714 | if (found) |
1715 | list_move_tail(&osd->o_keepalive_item, &slow_osds); | |
422d2cb8 | 1716 | } |
5aea3dcd ID |
1717 | |
1718 | if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) | |
1719 | maybe_request_map(osdc); | |
1720 | ||
422d2cb8 | 1721 | while (!list_empty(&slow_osds)) { |
5aea3dcd ID |
1722 | struct ceph_osd *osd = list_first_entry(&slow_osds, |
1723 | struct ceph_osd, | |
1724 | o_keepalive_item); | |
422d2cb8 | 1725 | list_del_init(&osd->o_keepalive_item); |
f24e9980 SW |
1726 | ceph_con_keepalive(&osd->o_con); |
1727 | } | |
1728 | ||
5aea3dcd | 1729 | up_write(&osdc->lock); |
fbca9635 ID |
1730 | schedule_delayed_work(&osdc->timeout_work, |
1731 | osdc->client->options->osd_keepalive_timeout); | |
f24e9980 SW |
1732 | } |
1733 | ||
f5a2041b YS |
1734 | static void handle_osds_timeout(struct work_struct *work) |
1735 | { | |
1736 | struct ceph_osd_client *osdc = | |
1737 | container_of(work, struct ceph_osd_client, | |
1738 | osds_timeout_work.work); | |
a319bf56 | 1739 | unsigned long delay = osdc->client->options->osd_idle_ttl / 4; |
42a2c09f | 1740 | struct ceph_osd *osd, *nosd; |
f5a2041b | 1741 | |
42a2c09f | 1742 | dout("%s osdc %p\n", __func__, osdc); |
5aea3dcd | 1743 | down_write(&osdc->lock); |
42a2c09f ID |
1744 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { |
1745 | if (time_before(jiffies, osd->lru_ttl)) | |
1746 | break; | |
1747 | ||
5aea3dcd ID |
1748 | WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); |
1749 | WARN_ON(!list_empty(&osd->o_linger_requests)); | |
1750 | close_osd(osd); | |
42a2c09f | 1751 | } |
f5a2041b | 1752 | |
5aea3dcd | 1753 | up_write(&osdc->lock); |
f5a2041b YS |
1754 | schedule_delayed_work(&osdc->osds_timeout_work, |
1755 | round_jiffies_relative(delay)); | |
1756 | } | |
1757 | ||
205ee118 ID |
1758 | static int ceph_oloc_decode(void **p, void *end, |
1759 | struct ceph_object_locator *oloc) | |
1760 | { | |
1761 | u8 struct_v, struct_cv; | |
1762 | u32 len; | |
1763 | void *struct_end; | |
1764 | int ret = 0; | |
1765 | ||
1766 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
1767 | struct_v = ceph_decode_8(p); | |
1768 | struct_cv = ceph_decode_8(p); | |
1769 | if (struct_v < 3) { | |
1770 | pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", | |
1771 | struct_v, struct_cv); | |
1772 | goto e_inval; | |
1773 | } | |
1774 | if (struct_cv > 6) { | |
1775 | pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", | |
1776 | struct_v, struct_cv); | |
1777 | goto e_inval; | |
1778 | } | |
1779 | len = ceph_decode_32(p); | |
1780 | ceph_decode_need(p, end, len, e_inval); | |
1781 | struct_end = *p + len; | |
1782 | ||
1783 | oloc->pool = ceph_decode_64(p); | |
1784 | *p += 4; /* skip preferred */ | |
1785 | ||
1786 | len = ceph_decode_32(p); | |
1787 | if (len > 0) { | |
1788 | pr_warn("ceph_object_locator::key is set\n"); | |
1789 | goto e_inval; | |
1790 | } | |
1791 | ||
1792 | if (struct_v >= 5) { | |
1793 | len = ceph_decode_32(p); | |
1794 | if (len > 0) { | |
1795 | pr_warn("ceph_object_locator::nspace is set\n"); | |
1796 | goto e_inval; | |
1797 | } | |
1798 | } | |
1799 | ||
1800 | if (struct_v >= 6) { | |
1801 | s64 hash = ceph_decode_64(p); | |
1802 | if (hash != -1) { | |
1803 | pr_warn("ceph_object_locator::hash is set\n"); | |
1804 | goto e_inval; | |
1805 | } | |
1806 | } | |
1807 | ||
1808 | /* skip the rest */ | |
1809 | *p = struct_end; | |
1810 | out: | |
1811 | return ret; | |
1812 | ||
1813 | e_inval: | |
1814 | ret = -EINVAL; | |
1815 | goto out; | |
1816 | } | |
1817 | ||
1818 | static int ceph_redirect_decode(void **p, void *end, | |
1819 | struct ceph_request_redirect *redir) | |
1820 | { | |
1821 | u8 struct_v, struct_cv; | |
1822 | u32 len; | |
1823 | void *struct_end; | |
1824 | int ret; | |
1825 | ||
1826 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
1827 | struct_v = ceph_decode_8(p); | |
1828 | struct_cv = ceph_decode_8(p); | |
1829 | if (struct_cv > 1) { | |
1830 | pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", | |
1831 | struct_v, struct_cv); | |
1832 | goto e_inval; | |
1833 | } | |
1834 | len = ceph_decode_32(p); | |
1835 | ceph_decode_need(p, end, len, e_inval); | |
1836 | struct_end = *p + len; | |
1837 | ||
1838 | ret = ceph_oloc_decode(p, end, &redir->oloc); | |
1839 | if (ret) | |
1840 | goto out; | |
1841 | ||
1842 | len = ceph_decode_32(p); | |
1843 | if (len > 0) { | |
1844 | pr_warn("ceph_request_redirect::object_name is set\n"); | |
1845 | goto e_inval; | |
1846 | } | |
1847 | ||
1848 | len = ceph_decode_32(p); | |
1849 | *p += len; /* skip osd_instructions */ | |
1850 | ||
1851 | /* skip the rest */ | |
1852 | *p = struct_end; | |
1853 | out: | |
1854 | return ret; | |
1855 | ||
1856 | e_inval: | |
1857 | ret = -EINVAL; | |
1858 | goto out; | |
1859 | } | |
1860 | ||
fe5da05e ID |
1861 | struct MOSDOpReply { |
1862 | struct ceph_pg pgid; | |
1863 | u64 flags; | |
1864 | int result; | |
1865 | u32 epoch; | |
1866 | int num_ops; | |
1867 | u32 outdata_len[CEPH_OSD_MAX_OPS]; | |
1868 | s32 rval[CEPH_OSD_MAX_OPS]; | |
1869 | int retry_attempt; | |
1870 | struct ceph_eversion replay_version; | |
1871 | u64 user_version; | |
1872 | struct ceph_request_redirect redirect; | |
1873 | }; | |
25845472 | 1874 | |
fe5da05e | 1875 | static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) |
f24e9980 | 1876 | { |
fe5da05e ID |
1877 | void *p = msg->front.iov_base; |
1878 | void *const end = p + msg->front.iov_len; | |
1879 | u16 version = le16_to_cpu(msg->hdr.version); | |
1880 | struct ceph_eversion bad_replay_version; | |
b0b31a8f | 1881 | u8 decode_redir; |
fe5da05e ID |
1882 | u32 len; |
1883 | int ret; | |
1884 | int i; | |
1b83bef2 | 1885 | |
fe5da05e ID |
1886 | ceph_decode_32_safe(&p, end, len, e_inval); |
1887 | ceph_decode_need(&p, end, len, e_inval); | |
1888 | p += len; /* skip oid */ | |
1b83bef2 | 1889 | |
fe5da05e ID |
1890 | ret = ceph_decode_pgid(&p, end, &m->pgid); |
1891 | if (ret) | |
1892 | return ret; | |
1b83bef2 | 1893 | |
fe5da05e ID |
1894 | ceph_decode_64_safe(&p, end, m->flags, e_inval); |
1895 | ceph_decode_32_safe(&p, end, m->result, e_inval); | |
1896 | ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); | |
1897 | memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); | |
1898 | p += sizeof(bad_replay_version); | |
1899 | ceph_decode_32_safe(&p, end, m->epoch, e_inval); | |
1b83bef2 | 1900 | |
fe5da05e ID |
1901 | ceph_decode_32_safe(&p, end, m->num_ops, e_inval); |
1902 | if (m->num_ops > ARRAY_SIZE(m->outdata_len)) | |
1903 | goto e_inval; | |
1b83bef2 | 1904 | |
fe5da05e ID |
1905 | ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), |
1906 | e_inval); | |
1907 | for (i = 0; i < m->num_ops; i++) { | |
1b83bef2 | 1908 | struct ceph_osd_op *op = p; |
1b83bef2 | 1909 | |
fe5da05e | 1910 | m->outdata_len[i] = le32_to_cpu(op->payload_len); |
1b83bef2 SW |
1911 | p += sizeof(*op); |
1912 | } | |
1b83bef2 | 1913 | |
fe5da05e ID |
1914 | ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); |
1915 | for (i = 0; i < m->num_ops; i++) | |
1916 | ceph_decode_32_safe(&p, end, m->rval[i], e_inval); | |
f24e9980 | 1917 | |
fe5da05e ID |
1918 | if (version >= 5) { |
1919 | ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); | |
1920 | memcpy(&m->replay_version, p, sizeof(m->replay_version)); | |
1921 | p += sizeof(m->replay_version); | |
1922 | ceph_decode_64_safe(&p, end, m->user_version, e_inval); | |
1923 | } else { | |
1924 | m->replay_version = bad_replay_version; /* struct */ | |
1925 | m->user_version = le64_to_cpu(m->replay_version.version); | |
1926 | } | |
eb845ff1 | 1927 | |
fe5da05e ID |
1928 | if (version >= 6) { |
1929 | if (version >= 7) | |
1930 | ceph_decode_8_safe(&p, end, decode_redir, e_inval); | |
b0b31a8f ID |
1931 | else |
1932 | decode_redir = 1; | |
1933 | } else { | |
1934 | decode_redir = 0; | |
1935 | } | |
1936 | ||
1937 | if (decode_redir) { | |
fe5da05e ID |
1938 | ret = ceph_redirect_decode(&p, end, &m->redirect); |
1939 | if (ret) | |
1940 | return ret; | |
205ee118 | 1941 | } else { |
fe5da05e | 1942 | ceph_oloc_init(&m->redirect.oloc); |
205ee118 | 1943 | } |
f24e9980 | 1944 | |
fe5da05e ID |
1945 | return 0; |
1946 | ||
1947 | e_inval: | |
1948 | return -EINVAL; | |
1949 | } | |
1950 | ||
1951 | /* | |
1952 | * We are done with @req if | |
1953 | * - @m is a safe reply, or | |
1954 | * - @m is an unsafe reply and we didn't want a safe one | |
1955 | */ | |
1956 | static bool done_request(const struct ceph_osd_request *req, | |
1957 | const struct MOSDOpReply *m) | |
1958 | { | |
1959 | return (m->result < 0 || | |
1960 | (m->flags & CEPH_OSD_FLAG_ONDISK) || | |
1961 | !(req->r_flags & CEPH_OSD_FLAG_ONDISK)); | |
1962 | } | |
205ee118 | 1963 | |
fe5da05e ID |
1964 | /* |
1965 | * handle osd op reply. either call the callback if it is specified, | |
1966 | * or do the completion to wake up the waiting thread. | |
1967 | * | |
1968 | * ->r_unsafe_callback is set? yes no | |
1969 | * | |
1970 | * first reply is OK (needed r_cb/r_completion, r_cb/r_completion, | |
1971 | * any or needed/got safe) r_safe_completion r_safe_completion | |
1972 | * | |
1973 | * first reply is unsafe r_unsafe_cb(true) (nothing) | |
1974 | * | |
1975 | * when we get the safe reply r_unsafe_cb(false), r_cb/r_completion, | |
1976 | * r_safe_completion r_safe_completion | |
1977 | */ | |
5aea3dcd | 1978 | static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) |
fe5da05e | 1979 | { |
5aea3dcd | 1980 | struct ceph_osd_client *osdc = osd->o_osdc; |
fe5da05e ID |
1981 | struct ceph_osd_request *req; |
1982 | struct MOSDOpReply m; | |
1983 | u64 tid = le64_to_cpu(msg->hdr.tid); | |
1984 | u32 data_len = 0; | |
1985 | bool already_acked; | |
1986 | int ret; | |
1987 | int i; | |
1988 | ||
1989 | dout("%s msg %p tid %llu\n", __func__, msg, tid); | |
1990 | ||
5aea3dcd ID |
1991 | down_read(&osdc->lock); |
1992 | if (!osd_registered(osd)) { | |
1993 | dout("%s osd%d unknown\n", __func__, osd->o_osd); | |
1994 | goto out_unlock_osdc; | |
1995 | } | |
1996 | WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); | |
1997 | ||
1998 | mutex_lock(&osd->lock); | |
1999 | req = lookup_request(&osd->o_requests, tid); | |
fe5da05e | 2000 | if (!req) { |
5aea3dcd ID |
2001 | dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); |
2002 | goto out_unlock_session; | |
fe5da05e | 2003 | } |
fe5da05e ID |
2004 | |
2005 | ret = decode_MOSDOpReply(msg, &m); | |
2006 | if (ret) { | |
2007 | pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", | |
2008 | req->r_tid, ret); | |
2009 | ceph_msg_dump(msg); | |
2010 | goto fail_request; | |
2011 | } | |
2012 | dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", | |
2013 | __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, | |
2014 | m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), | |
2015 | le64_to_cpu(m.replay_version.version), m.user_version); | |
2016 | ||
2017 | if (m.retry_attempt >= 0) { | |
2018 | if (m.retry_attempt != req->r_attempts - 1) { | |
2019 | dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", | |
2020 | req, req->r_tid, m.retry_attempt, | |
2021 | req->r_attempts - 1); | |
5aea3dcd | 2022 | goto out_unlock_session; |
fe5da05e ID |
2023 | } |
2024 | } else { | |
2025 | WARN_ON(1); /* MOSDOpReply v4 is assumed */ | |
2026 | } | |
2027 | ||
2028 | if (!ceph_oloc_empty(&m.redirect.oloc)) { | |
2029 | dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, | |
2030 | m.redirect.oloc.pool); | |
5aea3dcd ID |
2031 | unlink_request(osd, req); |
2032 | mutex_unlock(&osd->lock); | |
205ee118 | 2033 | |
fe5da05e | 2034 | ceph_oloc_copy(&req->r_t.target_oloc, &m.redirect.oloc); |
5aea3dcd ID |
2035 | req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; |
2036 | req->r_tid = 0; | |
2037 | __submit_request(req, false); | |
2038 | goto out_unlock_osdc; | |
205ee118 ID |
2039 | } |
2040 | ||
fe5da05e ID |
2041 | if (m.num_ops != req->r_num_ops) { |
2042 | pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, | |
2043 | req->r_num_ops, req->r_tid); | |
2044 | goto fail_request; | |
f24e9980 | 2045 | } |
fe5da05e ID |
2046 | for (i = 0; i < req->r_num_ops; i++) { |
2047 | dout(" req %p tid %llu op %d rval %d len %u\n", req, | |
2048 | req->r_tid, i, m.rval[i], m.outdata_len[i]); | |
2049 | req->r_ops[i].rval = m.rval[i]; | |
2050 | req->r_ops[i].outdata_len = m.outdata_len[i]; | |
2051 | data_len += m.outdata_len[i]; | |
2052 | } | |
2053 | if (data_len != le32_to_cpu(msg->hdr.data_len)) { | |
2054 | pr_err("sum of lens %u != %u for tid %llu\n", data_len, | |
2055 | le32_to_cpu(msg->hdr.data_len), req->r_tid); | |
2056 | goto fail_request; | |
2057 | } | |
2058 | dout("%s req %p tid %llu acked %d result %d data_len %u\n", __func__, | |
2059 | req, req->r_tid, req->r_got_reply, m.result, data_len); | |
2060 | ||
2061 | already_acked = req->r_got_reply; | |
2062 | if (!already_acked) { | |
2063 | req->r_result = m.result ?: data_len; | |
2064 | req->r_replay_version = m.replay_version; /* struct */ | |
2065 | req->r_got_reply = true; | |
2066 | } else if (!(m.flags & CEPH_OSD_FLAG_ONDISK)) { | |
2067 | dout("req %p tid %llu dup ack\n", req, req->r_tid); | |
5aea3dcd | 2068 | goto out_unlock_session; |
fe5da05e ID |
2069 | } |
2070 | ||
2071 | if (done_request(req, &m)) { | |
5aea3dcd | 2072 | __finish_request(req); |
fe5da05e ID |
2073 | if (req->r_linger) { |
2074 | WARN_ON(req->r_unsafe_callback); | |
5aea3dcd | 2075 | __register_linger_request(osd, req); |
fe5da05e ID |
2076 | } |
2077 | } | |
f24e9980 | 2078 | |
5aea3dcd ID |
2079 | mutex_unlock(&osd->lock); |
2080 | up_read(&osdc->lock); | |
f24e9980 | 2081 | |
fe5da05e ID |
2082 | if (done_request(req, &m)) { |
2083 | if (already_acked && req->r_unsafe_callback) { | |
2084 | dout("req %p tid %llu safe-cb\n", req, req->r_tid); | |
61c5d6bf | 2085 | req->r_unsafe_callback(req, false); |
fe5da05e ID |
2086 | } else { |
2087 | dout("req %p tid %llu cb\n", req, req->r_tid); | |
2088 | __complete_request(req); | |
2089 | } | |
2090 | } else { | |
2091 | if (req->r_unsafe_callback) { | |
2092 | dout("req %p tid %llu unsafe-cb\n", req, req->r_tid); | |
2093 | req->r_unsafe_callback(req, true); | |
2094 | } else { | |
2095 | WARN_ON(1); | |
2096 | } | |
61c5d6bf | 2097 | } |
fe5da05e ID |
2098 | if (m.flags & CEPH_OSD_FLAG_ONDISK) |
2099 | complete_all(&req->r_safe_completion); | |
f24e9980 | 2100 | |
f24e9980 SW |
2101 | ceph_osdc_put_request(req); |
2102 | return; | |
2103 | ||
fe5da05e | 2104 | fail_request: |
37c89bde | 2105 | req->r_result = -EIO; |
5aea3dcd | 2106 | __finish_request(req); |
fe5da05e ID |
2107 | __complete_request(req); |
2108 | complete_all(&req->r_safe_completion); | |
5aea3dcd ID |
2109 | out_unlock_session: |
2110 | mutex_unlock(&osd->lock); | |
2111 | out_unlock_osdc: | |
2112 | up_read(&osdc->lock); | |
f24e9980 SW |
2113 | } |
2114 | ||
42c1b124 ID |
2115 | static void set_pool_was_full(struct ceph_osd_client *osdc) |
2116 | { | |
2117 | struct rb_node *n; | |
2118 | ||
2119 | for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { | |
2120 | struct ceph_pg_pool_info *pi = | |
2121 | rb_entry(n, struct ceph_pg_pool_info, node); | |
2122 | ||
2123 | pi->was_full = __pool_full(pi); | |
2124 | } | |
2125 | } | |
2126 | ||
5aea3dcd | 2127 | static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) |
f24e9980 | 2128 | { |
5aea3dcd | 2129 | struct ceph_pg_pool_info *pi; |
f24e9980 | 2130 | |
5aea3dcd ID |
2131 | pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); |
2132 | if (!pi) | |
2133 | return false; | |
f24e9980 | 2134 | |
5aea3dcd | 2135 | return pi->was_full && !__pool_full(pi); |
422d2cb8 YS |
2136 | } |
2137 | ||
2138 | /* | |
5aea3dcd | 2139 | * Requeue requests whose mapping to an OSD has changed. |
422d2cb8 | 2140 | */ |
5aea3dcd ID |
2141 | static void scan_requests(struct ceph_osd *osd, |
2142 | bool force_resend, | |
2143 | bool cleared_full, | |
2144 | bool check_pool_cleared_full, | |
2145 | struct rb_root *need_resend, | |
2146 | struct list_head *need_resend_linger) | |
422d2cb8 | 2147 | { |
5aea3dcd ID |
2148 | struct ceph_osd_client *osdc = osd->o_osdc; |
2149 | struct rb_node *n; | |
2150 | bool force_resend_writes; | |
2151 | ||
2152 | for (n = rb_first(&osd->o_requests); n; ) { | |
2153 | struct ceph_osd_request *req = | |
2154 | rb_entry(n, struct ceph_osd_request, r_node); | |
2155 | enum calc_target_result ct_res; | |
2156 | ||
2157 | n = rb_next(n); /* unlink_request() */ | |
2158 | ||
2159 | dout("%s req %p tid %llu\n", __func__, req, req->r_tid); | |
2160 | ct_res = calc_target(osdc, &req->r_t, | |
2161 | &req->r_last_force_resend, false); | |
2162 | switch (ct_res) { | |
2163 | case CALC_TARGET_NO_ACTION: | |
2164 | force_resend_writes = cleared_full || | |
2165 | (check_pool_cleared_full && | |
2166 | pool_cleared_full(osdc, req->r_t.base_oloc.pool)); | |
2167 | if (!force_resend && | |
2168 | (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || | |
2169 | !force_resend_writes)) | |
2170 | break; | |
2171 | ||
2172 | /* fall through */ | |
2173 | case CALC_TARGET_NEED_RESEND: | |
2174 | unlink_request(osd, req); | |
2175 | insert_request(need_resend, req); | |
2176 | break; | |
2177 | case CALC_TARGET_POOL_DNE: | |
2178 | break; | |
b0494532 | 2179 | } |
6f6c7006 | 2180 | } |
422d2cb8 | 2181 | } |
6f6c7006 | 2182 | |
42c1b124 | 2183 | static int handle_one_map(struct ceph_osd_client *osdc, |
5aea3dcd ID |
2184 | void *p, void *end, bool incremental, |
2185 | struct rb_root *need_resend, | |
2186 | struct list_head *need_resend_linger) | |
42c1b124 ID |
2187 | { |
2188 | struct ceph_osdmap *newmap; | |
2189 | struct rb_node *n; | |
2190 | bool skipped_map = false; | |
2191 | bool was_full; | |
2192 | ||
2193 | was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); | |
2194 | set_pool_was_full(osdc); | |
2195 | ||
2196 | if (incremental) | |
2197 | newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); | |
2198 | else | |
2199 | newmap = ceph_osdmap_decode(&p, end); | |
2200 | if (IS_ERR(newmap)) | |
2201 | return PTR_ERR(newmap); | |
2202 | ||
2203 | if (newmap != osdc->osdmap) { | |
2204 | /* | |
2205 | * Preserve ->was_full before destroying the old map. | |
2206 | * For pools that weren't in the old map, ->was_full | |
2207 | * should be false. | |
2208 | */ | |
2209 | for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { | |
2210 | struct ceph_pg_pool_info *pi = | |
2211 | rb_entry(n, struct ceph_pg_pool_info, node); | |
2212 | struct ceph_pg_pool_info *old_pi; | |
2213 | ||
2214 | old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); | |
2215 | if (old_pi) | |
2216 | pi->was_full = old_pi->was_full; | |
2217 | else | |
2218 | WARN_ON(pi->was_full); | |
2219 | } | |
2220 | ||
2221 | if (osdc->osdmap->epoch && | |
2222 | osdc->osdmap->epoch + 1 < newmap->epoch) { | |
2223 | WARN_ON(incremental); | |
2224 | skipped_map = true; | |
2225 | } | |
2226 | ||
2227 | ceph_osdmap_destroy(osdc->osdmap); | |
2228 | osdc->osdmap = newmap; | |
2229 | } | |
2230 | ||
2231 | was_full &= !ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); | |
5aea3dcd ID |
2232 | scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, |
2233 | need_resend, need_resend_linger); | |
2234 | ||
2235 | for (n = rb_first(&osdc->osds); n; ) { | |
2236 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
2237 | ||
2238 | n = rb_next(n); /* close_osd() */ | |
2239 | ||
2240 | scan_requests(osd, skipped_map, was_full, true, need_resend, | |
2241 | need_resend_linger); | |
2242 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
2243 | memcmp(&osd->o_con.peer_addr, | |
2244 | ceph_osd_addr(osdc->osdmap, osd->o_osd), | |
2245 | sizeof(struct ceph_entity_addr))) | |
2246 | close_osd(osd); | |
2247 | } | |
42c1b124 ID |
2248 | |
2249 | return 0; | |
2250 | } | |
6f6c7006 | 2251 | |
5aea3dcd ID |
2252 | static void kick_requests(struct ceph_osd_client *osdc, |
2253 | struct rb_root *need_resend, | |
2254 | struct list_head *need_resend_linger) | |
2255 | { | |
2256 | struct rb_node *n; | |
2257 | ||
2258 | for (n = rb_first(need_resend); n; ) { | |
2259 | struct ceph_osd_request *req = | |
2260 | rb_entry(n, struct ceph_osd_request, r_node); | |
2261 | struct ceph_osd *osd; | |
2262 | ||
2263 | n = rb_next(n); | |
2264 | erase_request(need_resend, req); /* before link_request() */ | |
2265 | ||
2266 | WARN_ON(req->r_osd); | |
2267 | calc_target(osdc, &req->r_t, NULL, false); | |
2268 | osd = lookup_create_osd(osdc, req->r_t.osd, true); | |
2269 | link_request(osd, req); | |
2270 | if (!req->r_linger) { | |
2271 | if (!osd_homeless(osd) && !req->r_t.paused) | |
2272 | send_request(req); | |
2273 | } | |
2274 | } | |
2275 | } | |
2276 | ||
f24e9980 SW |
2277 | /* |
2278 | * Process updated osd map. | |
2279 | * | |
2280 | * The message contains any number of incremental and full maps, normally | |
2281 | * indicating some sort of topology change in the cluster. Kick requests | |
2282 | * off to different OSDs as needed. | |
2283 | */ | |
2284 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
2285 | { | |
42c1b124 ID |
2286 | void *p = msg->front.iov_base; |
2287 | void *const end = p + msg->front.iov_len; | |
f24e9980 SW |
2288 | u32 nr_maps, maplen; |
2289 | u32 epoch; | |
f24e9980 | 2290 | struct ceph_fsid fsid; |
5aea3dcd ID |
2291 | struct rb_root need_resend = RB_ROOT; |
2292 | LIST_HEAD(need_resend_linger); | |
42c1b124 ID |
2293 | bool handled_incremental = false; |
2294 | bool was_pauserd, was_pausewr; | |
2295 | bool pauserd, pausewr; | |
2296 | int err; | |
f24e9980 | 2297 | |
42c1b124 | 2298 | dout("%s have %u\n", __func__, osdc->osdmap->epoch); |
5aea3dcd | 2299 | down_write(&osdc->lock); |
f24e9980 SW |
2300 | |
2301 | /* verify fsid */ | |
2302 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
2303 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d | 2304 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
42c1b124 | 2305 | goto bad; |
f24e9980 | 2306 | |
42c1b124 ID |
2307 | was_pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); |
2308 | was_pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || | |
2309 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || | |
2310 | have_pool_full(osdc); | |
9a1ea2db | 2311 | |
f24e9980 SW |
2312 | /* incremental maps */ |
2313 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
2314 | dout(" %d inc maps\n", nr_maps); | |
2315 | while (nr_maps > 0) { | |
2316 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
2317 | epoch = ceph_decode_32(&p); |
2318 | maplen = ceph_decode_32(&p); | |
f24e9980 | 2319 | ceph_decode_need(&p, end, maplen, bad); |
42c1b124 ID |
2320 | if (osdc->osdmap->epoch && |
2321 | osdc->osdmap->epoch + 1 == epoch) { | |
f24e9980 SW |
2322 | dout("applying incremental map %u len %d\n", |
2323 | epoch, maplen); | |
5aea3dcd ID |
2324 | err = handle_one_map(osdc, p, p + maplen, true, |
2325 | &need_resend, &need_resend_linger); | |
42c1b124 | 2326 | if (err) |
f24e9980 | 2327 | goto bad; |
42c1b124 | 2328 | handled_incremental = true; |
f24e9980 SW |
2329 | } else { |
2330 | dout("ignoring incremental map %u len %d\n", | |
2331 | epoch, maplen); | |
2332 | } | |
42c1b124 | 2333 | p += maplen; |
f24e9980 SW |
2334 | nr_maps--; |
2335 | } | |
42c1b124 | 2336 | if (handled_incremental) |
f24e9980 SW |
2337 | goto done; |
2338 | ||
2339 | /* full maps */ | |
2340 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
2341 | dout(" %d full maps\n", nr_maps); | |
2342 | while (nr_maps) { | |
2343 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
2344 | epoch = ceph_decode_32(&p); |
2345 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
2346 | ceph_decode_need(&p, end, maplen, bad); |
2347 | if (nr_maps > 1) { | |
2348 | dout("skipping non-latest full map %u len %d\n", | |
2349 | epoch, maplen); | |
e5253a7b | 2350 | } else if (osdc->osdmap->epoch >= epoch) { |
f24e9980 SW |
2351 | dout("skipping full map %u len %d, " |
2352 | "older than our %u\n", epoch, maplen, | |
2353 | osdc->osdmap->epoch); | |
2354 | } else { | |
2355 | dout("taking full map %u len %d\n", epoch, maplen); | |
5aea3dcd ID |
2356 | err = handle_one_map(osdc, p, p + maplen, false, |
2357 | &need_resend, &need_resend_linger); | |
42c1b124 | 2358 | if (err) |
f24e9980 | 2359 | goto bad; |
f24e9980 SW |
2360 | } |
2361 | p += maplen; | |
2362 | nr_maps--; | |
2363 | } | |
2364 | ||
2365 | done: | |
cd634fb6 SW |
2366 | /* |
2367 | * subscribe to subsequent osdmap updates if full to ensure | |
2368 | * we find out when we are no longer full and stop returning | |
2369 | * ENOSPC. | |
2370 | */ | |
42c1b124 ID |
2371 | pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); |
2372 | pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || | |
2373 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || | |
2374 | have_pool_full(osdc); | |
2375 | if (was_pauserd || was_pausewr || pauserd || pausewr) | |
2376 | maybe_request_map(osdc); | |
cd634fb6 | 2377 | |
5aea3dcd | 2378 | kick_requests(osdc, &need_resend, &need_resend_linger); |
42c1b124 ID |
2379 | |
2380 | ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, | |
2381 | osdc->osdmap->epoch); | |
5aea3dcd | 2382 | up_write(&osdc->lock); |
03066f23 | 2383 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
2384 | return; |
2385 | ||
2386 | bad: | |
2387 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 2388 | ceph_msg_dump(msg); |
5aea3dcd ID |
2389 | up_write(&osdc->lock); |
2390 | } | |
2391 | ||
2392 | /* | |
2393 | * Resubmit requests pending on the given osd. | |
2394 | */ | |
2395 | static void kick_osd_requests(struct ceph_osd *osd) | |
2396 | { | |
2397 | struct rb_node *n; | |
2398 | ||
2399 | for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { | |
2400 | struct ceph_osd_request *req = | |
2401 | rb_entry(n, struct ceph_osd_request, r_node); | |
2402 | ||
2403 | if (!req->r_linger) { | |
2404 | if (!req->r_t.paused) | |
2405 | send_request(req); | |
2406 | } | |
2407 | } | |
2408 | } | |
2409 | ||
2410 | /* | |
2411 | * If the osd connection drops, we need to resubmit all requests. | |
2412 | */ | |
2413 | static void osd_fault(struct ceph_connection *con) | |
2414 | { | |
2415 | struct ceph_osd *osd = con->private; | |
2416 | struct ceph_osd_client *osdc = osd->o_osdc; | |
2417 | ||
2418 | dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); | |
2419 | ||
2420 | down_write(&osdc->lock); | |
2421 | if (!osd_registered(osd)) { | |
2422 | dout("%s osd%d unknown\n", __func__, osd->o_osd); | |
2423 | goto out_unlock; | |
2424 | } | |
2425 | ||
2426 | if (!reopen_osd(osd)) | |
2427 | kick_osd_requests(osd); | |
2428 | maybe_request_map(osdc); | |
2429 | ||
2430 | out_unlock: | |
2431 | up_write(&osdc->lock); | |
f24e9980 SW |
2432 | } |
2433 | ||
a40c4f10 YS |
2434 | /* |
2435 | * watch/notify callback event infrastructure | |
2436 | * | |
2437 | * These callbacks are used both for watch and notify operations. | |
2438 | */ | |
2439 | static void __release_event(struct kref *kref) | |
2440 | { | |
2441 | struct ceph_osd_event *event = | |
2442 | container_of(kref, struct ceph_osd_event, kref); | |
2443 | ||
2444 | dout("__release_event %p\n", event); | |
2445 | kfree(event); | |
2446 | } | |
2447 | ||
2448 | static void get_event(struct ceph_osd_event *event) | |
2449 | { | |
2450 | kref_get(&event->kref); | |
2451 | } | |
2452 | ||
2453 | void ceph_osdc_put_event(struct ceph_osd_event *event) | |
2454 | { | |
2455 | kref_put(&event->kref, __release_event); | |
2456 | } | |
2457 | EXPORT_SYMBOL(ceph_osdc_put_event); | |
2458 | ||
2459 | static void __insert_event(struct ceph_osd_client *osdc, | |
2460 | struct ceph_osd_event *new) | |
2461 | { | |
2462 | struct rb_node **p = &osdc->event_tree.rb_node; | |
2463 | struct rb_node *parent = NULL; | |
2464 | struct ceph_osd_event *event = NULL; | |
2465 | ||
2466 | while (*p) { | |
2467 | parent = *p; | |
2468 | event = rb_entry(parent, struct ceph_osd_event, node); | |
2469 | if (new->cookie < event->cookie) | |
2470 | p = &(*p)->rb_left; | |
2471 | else if (new->cookie > event->cookie) | |
2472 | p = &(*p)->rb_right; | |
2473 | else | |
2474 | BUG(); | |
2475 | } | |
2476 | ||
2477 | rb_link_node(&new->node, parent, p); | |
2478 | rb_insert_color(&new->node, &osdc->event_tree); | |
2479 | } | |
2480 | ||
2481 | static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, | |
2482 | u64 cookie) | |
2483 | { | |
2484 | struct rb_node **p = &osdc->event_tree.rb_node; | |
2485 | struct rb_node *parent = NULL; | |
2486 | struct ceph_osd_event *event = NULL; | |
2487 | ||
2488 | while (*p) { | |
2489 | parent = *p; | |
2490 | event = rb_entry(parent, struct ceph_osd_event, node); | |
2491 | if (cookie < event->cookie) | |
2492 | p = &(*p)->rb_left; | |
2493 | else if (cookie > event->cookie) | |
2494 | p = &(*p)->rb_right; | |
2495 | else | |
2496 | return event; | |
2497 | } | |
2498 | return NULL; | |
2499 | } | |
2500 | ||
2501 | static void __remove_event(struct ceph_osd_event *event) | |
2502 | { | |
2503 | struct ceph_osd_client *osdc = event->osdc; | |
2504 | ||
2505 | if (!RB_EMPTY_NODE(&event->node)) { | |
2506 | dout("__remove_event removed %p\n", event); | |
2507 | rb_erase(&event->node, &osdc->event_tree); | |
2508 | ceph_osdc_put_event(event); | |
2509 | } else { | |
2510 | dout("__remove_event didn't remove %p\n", event); | |
2511 | } | |
2512 | } | |
2513 | ||
2514 | int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
2515 | void (*event_cb)(u64, u64, u8, void *), | |
3c663bbd | 2516 | void *data, struct ceph_osd_event **pevent) |
a40c4f10 YS |
2517 | { |
2518 | struct ceph_osd_event *event; | |
2519 | ||
2520 | event = kmalloc(sizeof(*event), GFP_NOIO); | |
2521 | if (!event) | |
2522 | return -ENOMEM; | |
2523 | ||
2524 | dout("create_event %p\n", event); | |
2525 | event->cb = event_cb; | |
3c663bbd | 2526 | event->one_shot = 0; |
a40c4f10 YS |
2527 | event->data = data; |
2528 | event->osdc = osdc; | |
2529 | INIT_LIST_HEAD(&event->osd_node); | |
3ee5234d | 2530 | RB_CLEAR_NODE(&event->node); |
a40c4f10 YS |
2531 | kref_init(&event->kref); /* one ref for us */ |
2532 | kref_get(&event->kref); /* one ref for the caller */ | |
a40c4f10 YS |
2533 | |
2534 | spin_lock(&osdc->event_lock); | |
2535 | event->cookie = ++osdc->event_count; | |
2536 | __insert_event(osdc, event); | |
2537 | spin_unlock(&osdc->event_lock); | |
2538 | ||
2539 | *pevent = event; | |
2540 | return 0; | |
2541 | } | |
2542 | EXPORT_SYMBOL(ceph_osdc_create_event); | |
2543 | ||
2544 | void ceph_osdc_cancel_event(struct ceph_osd_event *event) | |
2545 | { | |
2546 | struct ceph_osd_client *osdc = event->osdc; | |
2547 | ||
2548 | dout("cancel_event %p\n", event); | |
2549 | spin_lock(&osdc->event_lock); | |
2550 | __remove_event(event); | |
2551 | spin_unlock(&osdc->event_lock); | |
2552 | ceph_osdc_put_event(event); /* caller's */ | |
2553 | } | |
2554 | EXPORT_SYMBOL(ceph_osdc_cancel_event); | |
2555 | ||
2556 | ||
2557 | static void do_event_work(struct work_struct *work) | |
2558 | { | |
2559 | struct ceph_osd_event_work *event_work = | |
2560 | container_of(work, struct ceph_osd_event_work, work); | |
2561 | struct ceph_osd_event *event = event_work->event; | |
2562 | u64 ver = event_work->ver; | |
2563 | u64 notify_id = event_work->notify_id; | |
2564 | u8 opcode = event_work->opcode; | |
2565 | ||
2566 | dout("do_event_work completing %p\n", event); | |
2567 | event->cb(ver, notify_id, opcode, event->data); | |
a40c4f10 YS |
2568 | dout("do_event_work completed %p\n", event); |
2569 | ceph_osdc_put_event(event); | |
2570 | kfree(event_work); | |
2571 | } | |
2572 | ||
2573 | ||
2574 | /* | |
2575 | * Process osd watch notifications | |
2576 | */ | |
3c663bbd AE |
2577 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
2578 | struct ceph_msg *msg) | |
a40c4f10 YS |
2579 | { |
2580 | void *p, *end; | |
2581 | u8 proto_ver; | |
2582 | u64 cookie, ver, notify_id; | |
2583 | u8 opcode; | |
2584 | struct ceph_osd_event *event; | |
2585 | struct ceph_osd_event_work *event_work; | |
2586 | ||
2587 | p = msg->front.iov_base; | |
2588 | end = p + msg->front.iov_len; | |
2589 | ||
2590 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
2591 | ceph_decode_8_safe(&p, end, opcode, bad); | |
2592 | ceph_decode_64_safe(&p, end, cookie, bad); | |
2593 | ceph_decode_64_safe(&p, end, ver, bad); | |
2594 | ceph_decode_64_safe(&p, end, notify_id, bad); | |
2595 | ||
2596 | spin_lock(&osdc->event_lock); | |
2597 | event = __find_event(osdc, cookie); | |
2598 | if (event) { | |
3c663bbd | 2599 | BUG_ON(event->one_shot); |
a40c4f10 | 2600 | get_event(event); |
a40c4f10 YS |
2601 | } |
2602 | spin_unlock(&osdc->event_lock); | |
2603 | dout("handle_watch_notify cookie %lld ver %lld event %p\n", | |
2604 | cookie, ver, event); | |
2605 | if (event) { | |
2606 | event_work = kmalloc(sizeof(*event_work), GFP_NOIO); | |
a40c4f10 | 2607 | if (!event_work) { |
91883cd2 ID |
2608 | pr_err("couldn't allocate event_work\n"); |
2609 | ceph_osdc_put_event(event); | |
2610 | return; | |
a40c4f10 | 2611 | } |
6b0ae409 | 2612 | INIT_WORK(&event_work->work, do_event_work); |
a40c4f10 YS |
2613 | event_work->event = event; |
2614 | event_work->ver = ver; | |
2615 | event_work->notify_id = notify_id; | |
2616 | event_work->opcode = opcode; | |
a40c4f10 | 2617 | |
91883cd2 ID |
2618 | queue_work(osdc->notify_wq, &event_work->work); |
2619 | } | |
a40c4f10 | 2620 | |
a40c4f10 YS |
2621 | return; |
2622 | ||
2623 | bad: | |
2624 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
a40c4f10 YS |
2625 | } |
2626 | ||
70636773 AE |
2627 | /* |
2628 | * Register request, send initial attempt. | |
2629 | */ | |
2630 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
2631 | struct ceph_osd_request *req, | |
2632 | bool nofail) | |
2633 | { | |
5aea3dcd ID |
2634 | down_read(&osdc->lock); |
2635 | submit_request(req, false); | |
2636 | up_read(&osdc->lock); | |
0bbfdfe8 | 2637 | |
5aea3dcd | 2638 | return 0; |
f24e9980 | 2639 | } |
3d14c5d2 | 2640 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 | 2641 | |
c9f9b93d ID |
2642 | /* |
2643 | * Unregister a registered request. The request is not completed (i.e. | |
2644 | * no callbacks or wakeups) - higher layers are supposed to know what | |
2645 | * they are canceling. | |
2646 | */ | |
2647 | void ceph_osdc_cancel_request(struct ceph_osd_request *req) | |
2648 | { | |
2649 | struct ceph_osd_client *osdc = req->r_osdc; | |
2650 | ||
5aea3dcd | 2651 | down_write(&osdc->lock); |
c9f9b93d ID |
2652 | if (req->r_linger) |
2653 | __unregister_linger_request(osdc, req); | |
5aea3dcd ID |
2654 | if (req->r_osd) |
2655 | cancel_request(req); | |
2656 | up_write(&osdc->lock); | |
c9f9b93d ID |
2657 | } |
2658 | EXPORT_SYMBOL(ceph_osdc_cancel_request); | |
2659 | ||
f24e9980 SW |
2660 | /* |
2661 | * wait for a request to complete | |
2662 | */ | |
2663 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
2664 | struct ceph_osd_request *req) | |
2665 | { | |
2666 | int rc; | |
2667 | ||
c9f9b93d ID |
2668 | dout("%s %p tid %llu\n", __func__, req, req->r_tid); |
2669 | ||
f24e9980 SW |
2670 | rc = wait_for_completion_interruptible(&req->r_completion); |
2671 | if (rc < 0) { | |
c9f9b93d ID |
2672 | dout("%s %p tid %llu interrupted\n", __func__, req, req->r_tid); |
2673 | ceph_osdc_cancel_request(req); | |
fe5da05e ID |
2674 | |
2675 | /* kludge - need to to wake ceph_osdc_sync() */ | |
2676 | complete_all(&req->r_safe_completion); | |
f24e9980 SW |
2677 | return rc; |
2678 | } | |
2679 | ||
c9f9b93d ID |
2680 | dout("%s %p tid %llu result %d\n", __func__, req, req->r_tid, |
2681 | req->r_result); | |
f24e9980 SW |
2682 | return req->r_result; |
2683 | } | |
3d14c5d2 | 2684 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
2685 | |
2686 | /* | |
2687 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
2688 | */ | |
2689 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
2690 | { | |
5aea3dcd ID |
2691 | struct rb_node *n, *p; |
2692 | u64 last_tid = atomic64_read(&osdc->last_tid); | |
f24e9980 | 2693 | |
5aea3dcd ID |
2694 | again: |
2695 | down_read(&osdc->lock); | |
2696 | for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { | |
2697 | struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); | |
2698 | ||
2699 | mutex_lock(&osd->lock); | |
2700 | for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { | |
2701 | struct ceph_osd_request *req = | |
2702 | rb_entry(p, struct ceph_osd_request, r_node); | |
2703 | ||
2704 | if (req->r_tid > last_tid) | |
2705 | break; | |
2706 | ||
2707 | if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) | |
2708 | continue; | |
f24e9980 | 2709 | |
5aea3dcd ID |
2710 | ceph_osdc_get_request(req); |
2711 | mutex_unlock(&osd->lock); | |
2712 | up_read(&osdc->lock); | |
2713 | dout("%s waiting on req %p tid %llu last_tid %llu\n", | |
2714 | __func__, req, req->r_tid, last_tid); | |
2715 | wait_for_completion(&req->r_safe_completion); | |
2716 | ceph_osdc_put_request(req); | |
2717 | goto again; | |
2718 | } | |
f24e9980 | 2719 | |
5aea3dcd | 2720 | mutex_unlock(&osd->lock); |
f24e9980 | 2721 | } |
5aea3dcd ID |
2722 | |
2723 | up_read(&osdc->lock); | |
2724 | dout("%s done last_tid %llu\n", __func__, last_tid); | |
f24e9980 | 2725 | } |
3d14c5d2 | 2726 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 | 2727 | |
dd935f44 JD |
2728 | /* |
2729 | * Call all pending notify callbacks - for use after a watch is | |
2730 | * unregistered, to make sure no more callbacks for it will be invoked | |
2731 | */ | |
f6479449 | 2732 | void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) |
dd935f44 JD |
2733 | { |
2734 | flush_workqueue(osdc->notify_wq); | |
2735 | } | |
2736 | EXPORT_SYMBOL(ceph_osdc_flush_notifies); | |
2737 | ||
2738 | ||
f24e9980 SW |
2739 | /* |
2740 | * init, shutdown | |
2741 | */ | |
2742 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
2743 | { | |
2744 | int err; | |
2745 | ||
2746 | dout("init\n"); | |
2747 | osdc->client = client; | |
5aea3dcd | 2748 | init_rwsem(&osdc->lock); |
f24e9980 | 2749 | osdc->osds = RB_ROOT; |
f5a2041b | 2750 | INIT_LIST_HEAD(&osdc->osd_lru); |
9dd2845c | 2751 | spin_lock_init(&osdc->osd_lru_lock); |
a40c4f10 | 2752 | INIT_LIST_HEAD(&osdc->req_linger); |
5aea3dcd ID |
2753 | osd_init(&osdc->homeless_osd); |
2754 | osdc->homeless_osd.o_osdc = osdc; | |
2755 | osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; | |
f24e9980 | 2756 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); |
f5a2041b | 2757 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10 YS |
2758 | spin_lock_init(&osdc->event_lock); |
2759 | osdc->event_tree = RB_ROOT; | |
2760 | osdc->event_count = 0; | |
f5a2041b | 2761 | |
5f44f142 | 2762 | err = -ENOMEM; |
e5253a7b ID |
2763 | osdc->osdmap = ceph_osdmap_alloc(); |
2764 | if (!osdc->osdmap) | |
2765 | goto out; | |
2766 | ||
9e767adb ID |
2767 | osdc->req_mempool = mempool_create_slab_pool(10, |
2768 | ceph_osd_request_cache); | |
f24e9980 | 2769 | if (!osdc->req_mempool) |
e5253a7b | 2770 | goto out_map; |
f24e9980 | 2771 | |
d50b409f | 2772 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
711da55d | 2773 | PAGE_SIZE, 10, true, "osd_op"); |
f24e9980 | 2774 | if (err < 0) |
5f44f142 | 2775 | goto out_mempool; |
d50b409f | 2776 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
711da55d | 2777 | PAGE_SIZE, 10, true, "osd_op_reply"); |
c16e7869 SW |
2778 | if (err < 0) |
2779 | goto out_msgpool; | |
a40c4f10 | 2780 | |
dbcae088 | 2781 | err = -ENOMEM; |
a40c4f10 | 2782 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); |
dbcae088 | 2783 | if (!osdc->notify_wq) |
c172ec5c ID |
2784 | goto out_msgpool_reply; |
2785 | ||
fbca9635 ID |
2786 | schedule_delayed_work(&osdc->timeout_work, |
2787 | osdc->client->options->osd_keepalive_timeout); | |
b37ee1b9 ID |
2788 | schedule_delayed_work(&osdc->osds_timeout_work, |
2789 | round_jiffies_relative(osdc->client->options->osd_idle_ttl)); | |
2790 | ||
f24e9980 | 2791 | return 0; |
5f44f142 | 2792 | |
c172ec5c ID |
2793 | out_msgpool_reply: |
2794 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); | |
c16e7869 SW |
2795 | out_msgpool: |
2796 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
2797 | out_mempool: |
2798 | mempool_destroy(osdc->req_mempool); | |
e5253a7b ID |
2799 | out_map: |
2800 | ceph_osdmap_destroy(osdc->osdmap); | |
5f44f142 SW |
2801 | out: |
2802 | return err; | |
f24e9980 SW |
2803 | } |
2804 | ||
2805 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
2806 | { | |
a40c4f10 YS |
2807 | flush_workqueue(osdc->notify_wq); |
2808 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 2809 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 2810 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
42a2c09f | 2811 | |
5aea3dcd | 2812 | down_write(&osdc->lock); |
42a2c09f ID |
2813 | while (!RB_EMPTY_ROOT(&osdc->osds)) { |
2814 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
2815 | struct ceph_osd, o_node); | |
5aea3dcd | 2816 | close_osd(osd); |
42a2c09f | 2817 | } |
5aea3dcd ID |
2818 | up_write(&osdc->lock); |
2819 | WARN_ON(atomic_read(&osdc->homeless_osd.o_ref) != 1); | |
2820 | osd_cleanup(&osdc->homeless_osd); | |
2821 | ||
2822 | WARN_ON(!list_empty(&osdc->osd_lru)); | |
2823 | WARN_ON(atomic_read(&osdc->num_requests)); | |
2824 | WARN_ON(atomic_read(&osdc->num_homeless)); | |
42a2c09f | 2825 | |
e5253a7b | 2826 | ceph_osdmap_destroy(osdc->osdmap); |
f24e9980 SW |
2827 | mempool_destroy(osdc->req_mempool); |
2828 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 2829 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
2830 | } |
2831 | ||
2832 | /* | |
2833 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
2834 | * *plen. Return number of bytes read, or error. | |
2835 | */ | |
2836 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
2837 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
2838 | u64 off, u64 *plen, | |
2839 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 2840 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
2841 | { |
2842 | struct ceph_osd_request *req; | |
2843 | int rc = 0; | |
2844 | ||
2845 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
2846 | vino.snap, off, *plen); | |
715e4cd4 | 2847 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, |
f24e9980 | 2848 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, |
acead002 | 2849 | NULL, truncate_seq, truncate_size, |
153e5167 | 2850 | false); |
6816282d SW |
2851 | if (IS_ERR(req)) |
2852 | return PTR_ERR(req); | |
f24e9980 SW |
2853 | |
2854 | /* it may be a short read due to an object boundary */ | |
406e2c9f | 2855 | osd_req_op_extent_osd_data_pages(req, 0, |
a4ce40a9 | 2856 | pages, *plen, page_align, false, false); |
f24e9980 | 2857 | |
e0c59487 | 2858 | dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", |
43bfe5de | 2859 | off, *plen, *plen, page_align); |
f24e9980 SW |
2860 | |
2861 | rc = ceph_osdc_start_request(osdc, req, false); | |
2862 | if (!rc) | |
2863 | rc = ceph_osdc_wait_request(osdc, req); | |
2864 | ||
2865 | ceph_osdc_put_request(req); | |
2866 | dout("readpages result %d\n", rc); | |
2867 | return rc; | |
2868 | } | |
3d14c5d2 | 2869 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
2870 | |
2871 | /* | |
2872 | * do a synchronous write on N pages | |
2873 | */ | |
2874 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
2875 | struct ceph_file_layout *layout, | |
2876 | struct ceph_snap_context *snapc, | |
2877 | u64 off, u64 len, | |
2878 | u32 truncate_seq, u64 truncate_size, | |
2879 | struct timespec *mtime, | |
24808826 | 2880 | struct page **pages, int num_pages) |
f24e9980 SW |
2881 | { |
2882 | struct ceph_osd_request *req; | |
2883 | int rc = 0; | |
b7495fc2 | 2884 | int page_align = off & ~PAGE_MASK; |
f24e9980 | 2885 | |
715e4cd4 | 2886 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, |
f24e9980 | 2887 | CEPH_OSD_OP_WRITE, |
24808826 | 2888 | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, |
acead002 | 2889 | snapc, truncate_seq, truncate_size, |
153e5167 | 2890 | true); |
6816282d SW |
2891 | if (IS_ERR(req)) |
2892 | return PTR_ERR(req); | |
f24e9980 SW |
2893 | |
2894 | /* it may be a short write due to an object boundary */ | |
406e2c9f | 2895 | osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, |
43bfe5de AE |
2896 | false, false); |
2897 | dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); | |
f24e9980 | 2898 | |
bb873b53 | 2899 | req->r_mtime = *mtime; |
87f979d3 | 2900 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
2901 | if (!rc) |
2902 | rc = ceph_osdc_wait_request(osdc, req); | |
2903 | ||
2904 | ceph_osdc_put_request(req); | |
2905 | if (rc == 0) | |
2906 | rc = len; | |
2907 | dout("writepages result %d\n", rc); | |
2908 | return rc; | |
2909 | } | |
3d14c5d2 | 2910 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 | 2911 | |
5522ae0b AE |
2912 | int ceph_osdc_setup(void) |
2913 | { | |
3f1af42a ID |
2914 | size_t size = sizeof(struct ceph_osd_request) + |
2915 | CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); | |
2916 | ||
5522ae0b | 2917 | BUG_ON(ceph_osd_request_cache); |
3f1af42a ID |
2918 | ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, |
2919 | 0, 0, NULL); | |
5522ae0b AE |
2920 | |
2921 | return ceph_osd_request_cache ? 0 : -ENOMEM; | |
2922 | } | |
2923 | EXPORT_SYMBOL(ceph_osdc_setup); | |
2924 | ||
2925 | void ceph_osdc_cleanup(void) | |
2926 | { | |
2927 | BUG_ON(!ceph_osd_request_cache); | |
2928 | kmem_cache_destroy(ceph_osd_request_cache); | |
2929 | ceph_osd_request_cache = NULL; | |
2930 | } | |
2931 | EXPORT_SYMBOL(ceph_osdc_cleanup); | |
2932 | ||
f24e9980 SW |
2933 | /* |
2934 | * handle incoming message | |
2935 | */ | |
2936 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
2937 | { | |
2938 | struct ceph_osd *osd = con->private; | |
5aea3dcd | 2939 | struct ceph_osd_client *osdc = osd->o_osdc; |
f24e9980 SW |
2940 | int type = le16_to_cpu(msg->hdr.type); |
2941 | ||
f24e9980 SW |
2942 | switch (type) { |
2943 | case CEPH_MSG_OSD_MAP: | |
2944 | ceph_osdc_handle_map(osdc, msg); | |
2945 | break; | |
2946 | case CEPH_MSG_OSD_OPREPLY: | |
5aea3dcd | 2947 | handle_reply(osd, msg); |
f24e9980 | 2948 | break; |
a40c4f10 YS |
2949 | case CEPH_MSG_WATCH_NOTIFY: |
2950 | handle_watch_notify(osdc, msg); | |
2951 | break; | |
f24e9980 SW |
2952 | |
2953 | default: | |
2954 | pr_err("received unknown message type %d %s\n", type, | |
2955 | ceph_msg_type_name(type)); | |
2956 | } | |
5aea3dcd | 2957 | |
f24e9980 SW |
2958 | ceph_msg_put(msg); |
2959 | } | |
2960 | ||
5b3a4db3 | 2961 | /* |
d15f9d69 ID |
2962 | * Lookup and return message for incoming reply. Don't try to do |
2963 | * anything about a larger than preallocated data portion of the | |
2964 | * message at the moment - for now, just skip the message. | |
5b3a4db3 SW |
2965 | */ |
2966 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
2967 | struct ceph_msg_header *hdr, |
2968 | int *skip) | |
f24e9980 SW |
2969 | { |
2970 | struct ceph_osd *osd = con->private; | |
2971 | struct ceph_osd_client *osdc = osd->o_osdc; | |
5aea3dcd | 2972 | struct ceph_msg *m = NULL; |
0547a9b3 | 2973 | struct ceph_osd_request *req; |
3f0a4ac5 | 2974 | int front_len = le32_to_cpu(hdr->front_len); |
5b3a4db3 | 2975 | int data_len = le32_to_cpu(hdr->data_len); |
5aea3dcd | 2976 | u64 tid = le64_to_cpu(hdr->tid); |
f24e9980 | 2977 | |
5aea3dcd ID |
2978 | down_read(&osdc->lock); |
2979 | if (!osd_registered(osd)) { | |
2980 | dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); | |
2981 | *skip = 1; | |
2982 | goto out_unlock_osdc; | |
2983 | } | |
2984 | WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); | |
2985 | ||
2986 | mutex_lock(&osd->lock); | |
2987 | req = lookup_request(&osd->o_requests, tid); | |
0547a9b3 | 2988 | if (!req) { |
cd8140c6 ID |
2989 | dout("%s osd%d tid %llu unknown, skipping\n", __func__, |
2990 | osd->o_osd, tid); | |
d15f9d69 | 2991 | *skip = 1; |
5aea3dcd | 2992 | goto out_unlock_session; |
0547a9b3 | 2993 | } |
c16e7869 | 2994 | |
ace6d3a9 | 2995 | ceph_msg_revoke_incoming(req->r_reply); |
0547a9b3 | 2996 | |
f2be82b0 | 2997 | if (front_len > req->r_reply->front_alloc_len) { |
d15f9d69 ID |
2998 | pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", |
2999 | __func__, osd->o_osd, req->r_tid, front_len, | |
3000 | req->r_reply->front_alloc_len); | |
3f0a4ac5 ID |
3001 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, |
3002 | false); | |
a79832f2 | 3003 | if (!m) |
5aea3dcd | 3004 | goto out_unlock_session; |
c16e7869 SW |
3005 | ceph_msg_put(req->r_reply); |
3006 | req->r_reply = m; | |
3007 | } | |
0fff87ec | 3008 | |
d15f9d69 ID |
3009 | if (data_len > req->r_reply->data_length) { |
3010 | pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", | |
3011 | __func__, osd->o_osd, req->r_tid, data_len, | |
3012 | req->r_reply->data_length); | |
3013 | m = NULL; | |
3014 | *skip = 1; | |
5aea3dcd | 3015 | goto out_unlock_session; |
0547a9b3 | 3016 | } |
d15f9d69 ID |
3017 | |
3018 | m = ceph_msg_get(req->r_reply); | |
c16e7869 | 3019 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 | 3020 | |
5aea3dcd ID |
3021 | out_unlock_session: |
3022 | mutex_unlock(&osd->lock); | |
3023 | out_unlock_osdc: | |
3024 | up_read(&osdc->lock); | |
2450418c | 3025 | return m; |
5b3a4db3 SW |
3026 | } |
3027 | ||
3028 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, | |
3029 | struct ceph_msg_header *hdr, | |
3030 | int *skip) | |
3031 | { | |
3032 | struct ceph_osd *osd = con->private; | |
3033 | int type = le16_to_cpu(hdr->type); | |
3034 | int front = le32_to_cpu(hdr->front_len); | |
3035 | ||
1c20f2d2 | 3036 | *skip = 0; |
5b3a4db3 SW |
3037 | switch (type) { |
3038 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 3039 | case CEPH_MSG_WATCH_NOTIFY: |
b61c2763 | 3040 | return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3 SW |
3041 | case CEPH_MSG_OSD_OPREPLY: |
3042 | return get_reply(con, hdr, skip); | |
3043 | default: | |
5aea3dcd ID |
3044 | pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, |
3045 | osd->o_osd, type); | |
5b3a4db3 SW |
3046 | *skip = 1; |
3047 | return NULL; | |
3048 | } | |
f24e9980 SW |
3049 | } |
3050 | ||
3051 | /* | |
3052 | * Wrappers to refcount containing ceph_osd struct | |
3053 | */ | |
3054 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
3055 | { | |
3056 | struct ceph_osd *osd = con->private; | |
3057 | if (get_osd(osd)) | |
3058 | return con; | |
3059 | return NULL; | |
3060 | } | |
3061 | ||
3062 | static void put_osd_con(struct ceph_connection *con) | |
3063 | { | |
3064 | struct ceph_osd *osd = con->private; | |
3065 | put_osd(osd); | |
3066 | } | |
3067 | ||
4e7a5dcd SW |
3068 | /* |
3069 | * authentication | |
3070 | */ | |
a3530df3 AE |
3071 | /* |
3072 | * Note: returned pointer is the address of a structure that's | |
3073 | * managed separately. Caller must *not* attempt to free it. | |
3074 | */ | |
3075 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 3076 | int *proto, int force_new) |
4e7a5dcd SW |
3077 | { |
3078 | struct ceph_osd *o = con->private; | |
3079 | struct ceph_osd_client *osdc = o->o_osdc; | |
3080 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 3081 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 3082 | |
74f1869f | 3083 | if (force_new && auth->authorizer) { |
6c1ea260 | 3084 | ceph_auth_destroy_authorizer(auth->authorizer); |
74f1869f AE |
3085 | auth->authorizer = NULL; |
3086 | } | |
27859f97 SW |
3087 | if (!auth->authorizer) { |
3088 | int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
3089 | auth); | |
4e7a5dcd | 3090 | if (ret) |
a3530df3 | 3091 | return ERR_PTR(ret); |
27859f97 SW |
3092 | } else { |
3093 | int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
0bed9b5c SW |
3094 | auth); |
3095 | if (ret) | |
3096 | return ERR_PTR(ret); | |
4e7a5dcd | 3097 | } |
4e7a5dcd | 3098 | *proto = ac->protocol; |
74f1869f | 3099 | |
a3530df3 | 3100 | return auth; |
4e7a5dcd SW |
3101 | } |
3102 | ||
3103 | ||
3104 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
3105 | { | |
3106 | struct ceph_osd *o = con->private; | |
3107 | struct ceph_osd_client *osdc = o->o_osdc; | |
3108 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
3109 | ||
27859f97 | 3110 | return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
3111 | } |
3112 | ||
9bd2e6f8 SW |
3113 | static int invalidate_authorizer(struct ceph_connection *con) |
3114 | { | |
3115 | struct ceph_osd *o = con->private; | |
3116 | struct ceph_osd_client *osdc = o->o_osdc; | |
3117 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
3118 | ||
27859f97 | 3119 | ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
9bd2e6f8 SW |
3120 | return ceph_monc_validate_auth(&osdc->client->monc); |
3121 | } | |
4e7a5dcd | 3122 | |
79dbd1ba | 3123 | static int osd_sign_message(struct ceph_msg *msg) |
33d07337 | 3124 | { |
79dbd1ba | 3125 | struct ceph_osd *o = msg->con->private; |
33d07337 | 3126 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 3127 | |
33d07337 YZ |
3128 | return ceph_auth_sign_message(auth, msg); |
3129 | } | |
3130 | ||
79dbd1ba | 3131 | static int osd_check_message_signature(struct ceph_msg *msg) |
33d07337 | 3132 | { |
79dbd1ba | 3133 | struct ceph_osd *o = msg->con->private; |
33d07337 | 3134 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 3135 | |
33d07337 YZ |
3136 | return ceph_auth_check_message_signature(auth, msg); |
3137 | } | |
3138 | ||
9e32789f | 3139 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
3140 | .get = get_osd_con, |
3141 | .put = put_osd_con, | |
3142 | .dispatch = dispatch, | |
4e7a5dcd SW |
3143 | .get_authorizer = get_authorizer, |
3144 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 3145 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 3146 | .alloc_msg = alloc_msg, |
79dbd1ba ID |
3147 | .sign_message = osd_sign_message, |
3148 | .check_message_signature = osd_check_message_signature, | |
5aea3dcd | 3149 | .fault = osd_fault, |
f24e9980 | 3150 | }; |