Commit | Line | Data |
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a4ce40a9 | 1 | |
3d14c5d2 | 2 | #include <linux/ceph/ceph_debug.h> |
f24e9980 | 3 | |
3d14c5d2 | 4 | #include <linux/module.h> |
f24e9980 SW |
5 | #include <linux/err.h> |
6 | #include <linux/highmem.h> | |
7 | #include <linux/mm.h> | |
8 | #include <linux/pagemap.h> | |
9 | #include <linux/slab.h> | |
10 | #include <linux/uaccess.h> | |
68b4476b YS |
11 | #ifdef CONFIG_BLOCK |
12 | #include <linux/bio.h> | |
13 | #endif | |
f24e9980 | 14 | |
3d14c5d2 YS |
15 | #include <linux/ceph/libceph.h> |
16 | #include <linux/ceph/osd_client.h> | |
17 | #include <linux/ceph/messenger.h> | |
18 | #include <linux/ceph/decode.h> | |
19 | #include <linux/ceph/auth.h> | |
20 | #include <linux/ceph/pagelist.h> | |
f24e9980 | 21 | |
c16e7869 | 22 | #define OSD_OPREPLY_FRONT_LEN 512 |
0d59ab81 | 23 | |
5522ae0b AE |
24 | static struct kmem_cache *ceph_osd_request_cache; |
25 | ||
9e32789f | 26 | static const struct ceph_connection_operations osd_con_ops; |
f24e9980 | 27 | |
f9d25199 | 28 | static void __send_queued(struct ceph_osd_client *osdc); |
6f6c7006 | 29 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); |
a40c4f10 YS |
30 | static void __register_request(struct ceph_osd_client *osdc, |
31 | struct ceph_osd_request *req); | |
2cc6128a ID |
32 | static void __unregister_request(struct ceph_osd_client *osdc, |
33 | struct ceph_osd_request *req); | |
a40c4f10 YS |
34 | static void __unregister_linger_request(struct ceph_osd_client *osdc, |
35 | struct ceph_osd_request *req); | |
2cc6128a | 36 | static void __enqueue_request(struct ceph_osd_request *req); |
56e925b6 SW |
37 | static void __send_request(struct ceph_osd_client *osdc, |
38 | struct ceph_osd_request *req); | |
f24e9980 SW |
39 | |
40 | /* | |
41 | * Implement client access to distributed object storage cluster. | |
42 | * | |
43 | * All data objects are stored within a cluster/cloud of OSDs, or | |
44 | * "object storage devices." (Note that Ceph OSDs have _nothing_ to | |
45 | * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply | |
46 | * remote daemons serving up and coordinating consistent and safe | |
47 | * access to storage. | |
48 | * | |
49 | * Cluster membership and the mapping of data objects onto storage devices | |
50 | * are described by the osd map. | |
51 | * | |
52 | * We keep track of pending OSD requests (read, write), resubmit | |
53 | * requests to different OSDs when the cluster topology/data layout | |
54 | * change, or retry the affected requests when the communications | |
55 | * channel with an OSD is reset. | |
56 | */ | |
57 | ||
58 | /* | |
59 | * calculate the mapping of a file extent onto an object, and fill out the | |
60 | * request accordingly. shorten extent as necessary if it crosses an | |
61 | * object boundary. | |
62 | * | |
63 | * fill osd op in request message. | |
64 | */ | |
dbe0fc41 | 65 | static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, |
a19dadfb | 66 | u64 *objnum, u64 *objoff, u64 *objlen) |
f24e9980 | 67 | { |
60e56f13 | 68 | u64 orig_len = *plen; |
d63b77f4 | 69 | int r; |
f24e9980 | 70 | |
60e56f13 | 71 | /* object extent? */ |
75d1c941 AE |
72 | r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, |
73 | objoff, objlen); | |
d63b77f4 SW |
74 | if (r < 0) |
75 | return r; | |
75d1c941 AE |
76 | if (*objlen < orig_len) { |
77 | *plen = *objlen; | |
60e56f13 AE |
78 | dout(" skipping last %llu, final file extent %llu~%llu\n", |
79 | orig_len - *plen, off, *plen); | |
80 | } | |
81 | ||
75d1c941 | 82 | dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); |
f24e9980 | 83 | |
3ff5f385 | 84 | return 0; |
f24e9980 SW |
85 | } |
86 | ||
c54d47bf AE |
87 | static void ceph_osd_data_init(struct ceph_osd_data *osd_data) |
88 | { | |
89 | memset(osd_data, 0, sizeof (*osd_data)); | |
90 | osd_data->type = CEPH_OSD_DATA_TYPE_NONE; | |
91 | } | |
92 | ||
a4ce40a9 | 93 | static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
94 | struct page **pages, u64 length, u32 alignment, |
95 | bool pages_from_pool, bool own_pages) | |
96 | { | |
97 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; | |
98 | osd_data->pages = pages; | |
99 | osd_data->length = length; | |
100 | osd_data->alignment = alignment; | |
101 | osd_data->pages_from_pool = pages_from_pool; | |
102 | osd_data->own_pages = own_pages; | |
103 | } | |
43bfe5de | 104 | |
a4ce40a9 | 105 | static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
106 | struct ceph_pagelist *pagelist) |
107 | { | |
108 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; | |
109 | osd_data->pagelist = pagelist; | |
110 | } | |
43bfe5de AE |
111 | |
112 | #ifdef CONFIG_BLOCK | |
a4ce40a9 | 113 | static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
114 | struct bio *bio, size_t bio_length) |
115 | { | |
116 | osd_data->type = CEPH_OSD_DATA_TYPE_BIO; | |
117 | osd_data->bio = bio; | |
118 | osd_data->bio_length = bio_length; | |
119 | } | |
43bfe5de AE |
120 | #endif /* CONFIG_BLOCK */ |
121 | ||
8a703a38 IC |
122 | #define osd_req_op_data(oreq, whch, typ, fld) \ |
123 | ({ \ | |
124 | struct ceph_osd_request *__oreq = (oreq); \ | |
125 | unsigned int __whch = (whch); \ | |
126 | BUG_ON(__whch >= __oreq->r_num_ops); \ | |
127 | &__oreq->r_ops[__whch].typ.fld; \ | |
128 | }) | |
863c7eb5 | 129 | |
49719778 AE |
130 | static struct ceph_osd_data * |
131 | osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) | |
132 | { | |
133 | BUG_ON(which >= osd_req->r_num_ops); | |
134 | ||
135 | return &osd_req->r_ops[which].raw_data_in; | |
136 | } | |
137 | ||
a4ce40a9 AE |
138 | struct ceph_osd_data * |
139 | osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, | |
406e2c9f | 140 | unsigned int which) |
a4ce40a9 | 141 | { |
863c7eb5 | 142 | return osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
143 | } |
144 | EXPORT_SYMBOL(osd_req_op_extent_osd_data); | |
145 | ||
49719778 AE |
146 | void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, |
147 | unsigned int which, struct page **pages, | |
148 | u64 length, u32 alignment, | |
149 | bool pages_from_pool, bool own_pages) | |
150 | { | |
151 | struct ceph_osd_data *osd_data; | |
152 | ||
153 | osd_data = osd_req_op_raw_data_in(osd_req, which); | |
154 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
155 | pages_from_pool, own_pages); | |
156 | } | |
157 | EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); | |
158 | ||
a4ce40a9 | 159 | void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, |
406e2c9f AE |
160 | unsigned int which, struct page **pages, |
161 | u64 length, u32 alignment, | |
a4ce40a9 AE |
162 | bool pages_from_pool, bool own_pages) |
163 | { | |
164 | struct ceph_osd_data *osd_data; | |
165 | ||
863c7eb5 | 166 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
167 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
168 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
169 | } |
170 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); | |
171 | ||
172 | void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, | |
406e2c9f | 173 | unsigned int which, struct ceph_pagelist *pagelist) |
a4ce40a9 AE |
174 | { |
175 | struct ceph_osd_data *osd_data; | |
176 | ||
863c7eb5 | 177 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 | 178 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
179 | } |
180 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); | |
181 | ||
182 | #ifdef CONFIG_BLOCK | |
183 | void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, | |
406e2c9f | 184 | unsigned int which, struct bio *bio, size_t bio_length) |
a4ce40a9 AE |
185 | { |
186 | struct ceph_osd_data *osd_data; | |
863c7eb5 AE |
187 | |
188 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); | |
a4ce40a9 | 189 | ceph_osd_data_bio_init(osd_data, bio, bio_length); |
a4ce40a9 AE |
190 | } |
191 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); | |
192 | #endif /* CONFIG_BLOCK */ | |
193 | ||
194 | static void osd_req_op_cls_request_info_pagelist( | |
195 | struct ceph_osd_request *osd_req, | |
196 | unsigned int which, struct ceph_pagelist *pagelist) | |
197 | { | |
198 | struct ceph_osd_data *osd_data; | |
199 | ||
863c7eb5 | 200 | osd_data = osd_req_op_data(osd_req, which, cls, request_info); |
a4ce40a9 | 201 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
202 | } |
203 | ||
04017e29 AE |
204 | void osd_req_op_cls_request_data_pagelist( |
205 | struct ceph_osd_request *osd_req, | |
206 | unsigned int which, struct ceph_pagelist *pagelist) | |
207 | { | |
208 | struct ceph_osd_data *osd_data; | |
209 | ||
863c7eb5 | 210 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); |
04017e29 AE |
211 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
212 | } | |
213 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); | |
214 | ||
6c57b554 AE |
215 | void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, |
216 | unsigned int which, struct page **pages, u64 length, | |
217 | u32 alignment, bool pages_from_pool, bool own_pages) | |
218 | { | |
219 | struct ceph_osd_data *osd_data; | |
220 | ||
221 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); | |
222 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
223 | pages_from_pool, own_pages); | |
224 | } | |
225 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); | |
226 | ||
a4ce40a9 AE |
227 | void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, |
228 | unsigned int which, struct page **pages, u64 length, | |
229 | u32 alignment, bool pages_from_pool, bool own_pages) | |
230 | { | |
231 | struct ceph_osd_data *osd_data; | |
232 | ||
863c7eb5 | 233 | osd_data = osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
234 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
235 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
236 | } |
237 | EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); | |
238 | ||
23c08a9c AE |
239 | static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) |
240 | { | |
241 | switch (osd_data->type) { | |
242 | case CEPH_OSD_DATA_TYPE_NONE: | |
243 | return 0; | |
244 | case CEPH_OSD_DATA_TYPE_PAGES: | |
245 | return osd_data->length; | |
246 | case CEPH_OSD_DATA_TYPE_PAGELIST: | |
247 | return (u64)osd_data->pagelist->length; | |
248 | #ifdef CONFIG_BLOCK | |
249 | case CEPH_OSD_DATA_TYPE_BIO: | |
250 | return (u64)osd_data->bio_length; | |
251 | #endif /* CONFIG_BLOCK */ | |
252 | default: | |
253 | WARN(true, "unrecognized data type %d\n", (int)osd_data->type); | |
254 | return 0; | |
255 | } | |
256 | } | |
257 | ||
c54d47bf AE |
258 | static void ceph_osd_data_release(struct ceph_osd_data *osd_data) |
259 | { | |
5476492f | 260 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { |
c54d47bf AE |
261 | int num_pages; |
262 | ||
263 | num_pages = calc_pages_for((u64)osd_data->alignment, | |
264 | (u64)osd_data->length); | |
265 | ceph_release_page_vector(osd_data->pages, num_pages); | |
266 | } | |
5476492f AE |
267 | ceph_osd_data_init(osd_data); |
268 | } | |
269 | ||
270 | static void osd_req_op_data_release(struct ceph_osd_request *osd_req, | |
271 | unsigned int which) | |
272 | { | |
273 | struct ceph_osd_req_op *op; | |
274 | ||
275 | BUG_ON(which >= osd_req->r_num_ops); | |
276 | op = &osd_req->r_ops[which]; | |
277 | ||
278 | switch (op->op) { | |
279 | case CEPH_OSD_OP_READ: | |
280 | case CEPH_OSD_OP_WRITE: | |
e30b7577 | 281 | case CEPH_OSD_OP_WRITEFULL: |
5476492f AE |
282 | ceph_osd_data_release(&op->extent.osd_data); |
283 | break; | |
284 | case CEPH_OSD_OP_CALL: | |
285 | ceph_osd_data_release(&op->cls.request_info); | |
04017e29 | 286 | ceph_osd_data_release(&op->cls.request_data); |
5476492f AE |
287 | ceph_osd_data_release(&op->cls.response_data); |
288 | break; | |
d74b50be YZ |
289 | case CEPH_OSD_OP_SETXATTR: |
290 | case CEPH_OSD_OP_CMPXATTR: | |
291 | ceph_osd_data_release(&op->xattr.osd_data); | |
292 | break; | |
66ba609f YZ |
293 | case CEPH_OSD_OP_STAT: |
294 | ceph_osd_data_release(&op->raw_data_in); | |
295 | break; | |
5476492f AE |
296 | default: |
297 | break; | |
298 | } | |
c54d47bf AE |
299 | } |
300 | ||
63244fa1 ID |
301 | /* |
302 | * Assumes @t is zero-initialized. | |
303 | */ | |
304 | static void target_init(struct ceph_osd_request_target *t) | |
305 | { | |
306 | ceph_oid_init(&t->base_oid); | |
307 | ceph_oloc_init(&t->base_oloc); | |
308 | ceph_oid_init(&t->target_oid); | |
309 | ceph_oloc_init(&t->target_oloc); | |
310 | ||
311 | ceph_osds_init(&t->acting); | |
312 | ceph_osds_init(&t->up); | |
313 | t->size = -1; | |
314 | t->min_size = -1; | |
315 | ||
316 | t->osd = CEPH_HOMELESS_OSD; | |
317 | } | |
318 | ||
319 | static void target_destroy(struct ceph_osd_request_target *t) | |
320 | { | |
321 | ceph_oid_destroy(&t->base_oid); | |
322 | ceph_oid_destroy(&t->target_oid); | |
323 | } | |
324 | ||
f24e9980 SW |
325 | /* |
326 | * requests | |
327 | */ | |
9e94af20 | 328 | static void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 329 | { |
9e94af20 ID |
330 | struct ceph_osd_request *req = container_of(kref, |
331 | struct ceph_osd_request, r_kref); | |
5476492f | 332 | unsigned int which; |
415e49a9 | 333 | |
9e94af20 ID |
334 | dout("%s %p (r_request %p r_reply %p)\n", __func__, req, |
335 | req->r_request, req->r_reply); | |
6562d661 ID |
336 | WARN_ON(!RB_EMPTY_NODE(&req->r_node)); |
337 | WARN_ON(!list_empty(&req->r_req_lru_item)); | |
338 | WARN_ON(!list_empty(&req->r_osd_item)); | |
339 | WARN_ON(!list_empty(&req->r_linger_item)); | |
340 | WARN_ON(!list_empty(&req->r_linger_osd_item)); | |
341 | WARN_ON(req->r_osd); | |
9e94af20 | 342 | |
415e49a9 SW |
343 | if (req->r_request) |
344 | ceph_msg_put(req->r_request); | |
ace6d3a9 | 345 | if (req->r_reply) { |
8921d114 | 346 | ceph_msg_revoke_incoming(req->r_reply); |
ab8cb34a | 347 | ceph_msg_put(req->r_reply); |
ace6d3a9 | 348 | } |
0fff87ec | 349 | |
5476492f AE |
350 | for (which = 0; which < req->r_num_ops; which++) |
351 | osd_req_op_data_release(req, which); | |
0fff87ec | 352 | |
d30291b9 ID |
353 | ceph_oid_destroy(&req->r_base_oid); |
354 | ceph_oid_destroy(&req->r_target_oid); | |
415e49a9 | 355 | ceph_put_snap_context(req->r_snapc); |
d30291b9 | 356 | |
415e49a9 SW |
357 | if (req->r_mempool) |
358 | mempool_free(req, req->r_osdc->req_mempool); | |
3f1af42a | 359 | else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) |
5522ae0b | 360 | kmem_cache_free(ceph_osd_request_cache, req); |
3f1af42a ID |
361 | else |
362 | kfree(req); | |
f24e9980 | 363 | } |
9e94af20 ID |
364 | |
365 | void ceph_osdc_get_request(struct ceph_osd_request *req) | |
366 | { | |
367 | dout("%s %p (was %d)\n", __func__, req, | |
368 | atomic_read(&req->r_kref.refcount)); | |
369 | kref_get(&req->r_kref); | |
370 | } | |
371 | EXPORT_SYMBOL(ceph_osdc_get_request); | |
372 | ||
373 | void ceph_osdc_put_request(struct ceph_osd_request *req) | |
374 | { | |
3ed97d63 ID |
375 | if (req) { |
376 | dout("%s %p (was %d)\n", __func__, req, | |
377 | atomic_read(&req->r_kref.refcount)); | |
378 | kref_put(&req->r_kref, ceph_osdc_release_request); | |
379 | } | |
9e94af20 ID |
380 | } |
381 | EXPORT_SYMBOL(ceph_osdc_put_request); | |
68b4476b | 382 | |
3499e8a5 | 383 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 384 | struct ceph_snap_context *snapc, |
1b83bef2 | 385 | unsigned int num_ops, |
3499e8a5 | 386 | bool use_mempool, |
54a54007 | 387 | gfp_t gfp_flags) |
f24e9980 SW |
388 | { |
389 | struct ceph_osd_request *req; | |
1b83bef2 | 390 | |
f24e9980 | 391 | if (use_mempool) { |
3f1af42a | 392 | BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); |
3499e8a5 | 393 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
3f1af42a ID |
394 | } else if (num_ops <= CEPH_OSD_SLAB_OPS) { |
395 | req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); | |
f24e9980 | 396 | } else { |
3f1af42a ID |
397 | BUG_ON(num_ops > CEPH_OSD_MAX_OPS); |
398 | req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), | |
399 | gfp_flags); | |
f24e9980 | 400 | } |
3f1af42a | 401 | if (unlikely(!req)) |
a79832f2 | 402 | return NULL; |
f24e9980 | 403 | |
3f1af42a ID |
404 | /* req only, each op is zeroed in _osd_req_op_init() */ |
405 | memset(req, 0, sizeof(*req)); | |
406 | ||
f24e9980 SW |
407 | req->r_osdc = osdc; |
408 | req->r_mempool = use_mempool; | |
79528734 | 409 | req->r_num_ops = num_ops; |
84127282 ID |
410 | req->r_snapid = CEPH_NOSNAP; |
411 | req->r_snapc = ceph_get_snap_context(snapc); | |
68b4476b | 412 | |
415e49a9 | 413 | kref_init(&req->r_kref); |
f24e9980 SW |
414 | init_completion(&req->r_completion); |
415 | init_completion(&req->r_safe_completion); | |
a978fa20 | 416 | RB_CLEAR_NODE(&req->r_node); |
f24e9980 | 417 | INIT_LIST_HEAD(&req->r_unsafe_item); |
a40c4f10 | 418 | INIT_LIST_HEAD(&req->r_linger_item); |
1d0326b1 | 419 | INIT_LIST_HEAD(&req->r_linger_osd_item); |
935b639a | 420 | INIT_LIST_HEAD(&req->r_req_lru_item); |
cd43045c SW |
421 | INIT_LIST_HEAD(&req->r_osd_item); |
422 | ||
d30291b9 | 423 | ceph_oid_init(&req->r_base_oid); |
3c972c95 | 424 | req->r_base_oloc.pool = -1; |
d30291b9 | 425 | ceph_oid_init(&req->r_target_oid); |
205ee118 | 426 | req->r_target_oloc.pool = -1; |
22116525 | 427 | |
13d1ad16 ID |
428 | dout("%s req %p\n", __func__, req); |
429 | return req; | |
430 | } | |
431 | EXPORT_SYMBOL(ceph_osdc_alloc_request); | |
3f1af42a | 432 | |
13d1ad16 ID |
433 | int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) |
434 | { | |
435 | struct ceph_osd_client *osdc = req->r_osdc; | |
436 | struct ceph_msg *msg; | |
437 | int msg_size; | |
c16e7869 | 438 | |
d30291b9 ID |
439 | WARN_ON(ceph_oid_empty(&req->r_base_oid)); |
440 | ||
13d1ad16 | 441 | /* create request message */ |
ae458f5a ID |
442 | msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ |
443 | msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ | |
444 | msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ | |
445 | msg_size += 1 + 8 + 4 + 4; /* pgid */ | |
13d1ad16 ID |
446 | msg_size += 4 + req->r_base_oid.name_len; /* oid */ |
447 | msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); | |
ae458f5a ID |
448 | msg_size += 8; /* snapid */ |
449 | msg_size += 8; /* snap_seq */ | |
13d1ad16 | 450 | msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); |
ae458f5a ID |
451 | msg_size += 4; /* retry_attempt */ |
452 | ||
13d1ad16 | 453 | if (req->r_mempool) |
8f3bc053 | 454 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 455 | else |
13d1ad16 ID |
456 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); |
457 | if (!msg) | |
458 | return -ENOMEM; | |
68b4476b | 459 | |
f24e9980 | 460 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 | 461 | req->r_request = msg; |
3499e8a5 | 462 | |
13d1ad16 ID |
463 | /* create reply message */ |
464 | msg_size = OSD_OPREPLY_FRONT_LEN; | |
711da55d ID |
465 | msg_size += req->r_base_oid.name_len; |
466 | msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); | |
13d1ad16 ID |
467 | |
468 | if (req->r_mempool) | |
469 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
470 | else | |
471 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); | |
472 | if (!msg) | |
473 | return -ENOMEM; | |
474 | ||
475 | req->r_reply = msg; | |
476 | ||
477 | return 0; | |
3499e8a5 | 478 | } |
13d1ad16 | 479 | EXPORT_SYMBOL(ceph_osdc_alloc_messages); |
3499e8a5 | 480 | |
a8dd0a37 | 481 | static bool osd_req_opcode_valid(u16 opcode) |
68b4476b | 482 | { |
a8dd0a37 | 483 | switch (opcode) { |
70b5bfa3 ID |
484 | #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; |
485 | __CEPH_FORALL_OSD_OPS(GENERATE_CASE) | |
486 | #undef GENERATE_CASE | |
a8dd0a37 AE |
487 | default: |
488 | return false; | |
489 | } | |
490 | } | |
491 | ||
33803f33 AE |
492 | /* |
493 | * This is an osd op init function for opcodes that have no data or | |
494 | * other information associated with them. It also serves as a | |
495 | * common init routine for all the other init functions, below. | |
496 | */ | |
c99d2d4a | 497 | static struct ceph_osd_req_op * |
49719778 | 498 | _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, |
144cba14 | 499 | u16 opcode, u32 flags) |
33803f33 | 500 | { |
c99d2d4a AE |
501 | struct ceph_osd_req_op *op; |
502 | ||
503 | BUG_ON(which >= osd_req->r_num_ops); | |
33803f33 AE |
504 | BUG_ON(!osd_req_opcode_valid(opcode)); |
505 | ||
c99d2d4a | 506 | op = &osd_req->r_ops[which]; |
33803f33 | 507 | memset(op, 0, sizeof (*op)); |
33803f33 | 508 | op->op = opcode; |
144cba14 | 509 | op->flags = flags; |
c99d2d4a AE |
510 | |
511 | return op; | |
33803f33 AE |
512 | } |
513 | ||
49719778 | 514 | void osd_req_op_init(struct ceph_osd_request *osd_req, |
144cba14 | 515 | unsigned int which, u16 opcode, u32 flags) |
49719778 | 516 | { |
144cba14 | 517 | (void)_osd_req_op_init(osd_req, which, opcode, flags); |
49719778 AE |
518 | } |
519 | EXPORT_SYMBOL(osd_req_op_init); | |
520 | ||
c99d2d4a AE |
521 | void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
522 | unsigned int which, u16 opcode, | |
33803f33 AE |
523 | u64 offset, u64 length, |
524 | u64 truncate_size, u32 truncate_seq) | |
525 | { | |
144cba14 YZ |
526 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
527 | opcode, 0); | |
33803f33 AE |
528 | size_t payload_len = 0; |
529 | ||
ad7a60de | 530 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
e30b7577 ID |
531 | opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && |
532 | opcode != CEPH_OSD_OP_TRUNCATE); | |
33803f33 | 533 | |
33803f33 AE |
534 | op->extent.offset = offset; |
535 | op->extent.length = length; | |
536 | op->extent.truncate_size = truncate_size; | |
537 | op->extent.truncate_seq = truncate_seq; | |
e30b7577 | 538 | if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) |
33803f33 AE |
539 | payload_len += length; |
540 | ||
de2aa102 | 541 | op->indata_len = payload_len; |
33803f33 AE |
542 | } |
543 | EXPORT_SYMBOL(osd_req_op_extent_init); | |
544 | ||
c99d2d4a AE |
545 | void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
546 | unsigned int which, u64 length) | |
e5975c7c | 547 | { |
c99d2d4a AE |
548 | struct ceph_osd_req_op *op; |
549 | u64 previous; | |
550 | ||
551 | BUG_ON(which >= osd_req->r_num_ops); | |
552 | op = &osd_req->r_ops[which]; | |
553 | previous = op->extent.length; | |
e5975c7c AE |
554 | |
555 | if (length == previous) | |
556 | return; /* Nothing to do */ | |
557 | BUG_ON(length > previous); | |
558 | ||
559 | op->extent.length = length; | |
de2aa102 | 560 | op->indata_len -= previous - length; |
e5975c7c AE |
561 | } |
562 | EXPORT_SYMBOL(osd_req_op_extent_update); | |
563 | ||
2c63f49a YZ |
564 | void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, |
565 | unsigned int which, u64 offset_inc) | |
566 | { | |
567 | struct ceph_osd_req_op *op, *prev_op; | |
568 | ||
569 | BUG_ON(which + 1 >= osd_req->r_num_ops); | |
570 | ||
571 | prev_op = &osd_req->r_ops[which]; | |
572 | op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); | |
573 | /* dup previous one */ | |
574 | op->indata_len = prev_op->indata_len; | |
575 | op->outdata_len = prev_op->outdata_len; | |
576 | op->extent = prev_op->extent; | |
577 | /* adjust offset */ | |
578 | op->extent.offset += offset_inc; | |
579 | op->extent.length -= offset_inc; | |
580 | ||
581 | if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) | |
582 | op->indata_len -= offset_inc; | |
583 | } | |
584 | EXPORT_SYMBOL(osd_req_op_extent_dup_last); | |
585 | ||
c99d2d4a | 586 | void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, |
04017e29 | 587 | u16 opcode, const char *class, const char *method) |
33803f33 | 588 | { |
144cba14 YZ |
589 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
590 | opcode, 0); | |
5f562df5 | 591 | struct ceph_pagelist *pagelist; |
33803f33 AE |
592 | size_t payload_len = 0; |
593 | size_t size; | |
594 | ||
595 | BUG_ON(opcode != CEPH_OSD_OP_CALL); | |
596 | ||
5f562df5 AE |
597 | pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); |
598 | BUG_ON(!pagelist); | |
599 | ceph_pagelist_init(pagelist); | |
600 | ||
33803f33 AE |
601 | op->cls.class_name = class; |
602 | size = strlen(class); | |
603 | BUG_ON(size > (size_t) U8_MAX); | |
604 | op->cls.class_len = size; | |
5f562df5 | 605 | ceph_pagelist_append(pagelist, class, size); |
33803f33 AE |
606 | payload_len += size; |
607 | ||
608 | op->cls.method_name = method; | |
609 | size = strlen(method); | |
610 | BUG_ON(size > (size_t) U8_MAX); | |
611 | op->cls.method_len = size; | |
5f562df5 | 612 | ceph_pagelist_append(pagelist, method, size); |
33803f33 AE |
613 | payload_len += size; |
614 | ||
a4ce40a9 | 615 | osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); |
5f562df5 | 616 | |
33803f33 AE |
617 | op->cls.argc = 0; /* currently unused */ |
618 | ||
de2aa102 | 619 | op->indata_len = payload_len; |
33803f33 AE |
620 | } |
621 | EXPORT_SYMBOL(osd_req_op_cls_init); | |
8c042b0d | 622 | |
d74b50be YZ |
623 | int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, |
624 | u16 opcode, const char *name, const void *value, | |
625 | size_t size, u8 cmp_op, u8 cmp_mode) | |
626 | { | |
144cba14 YZ |
627 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
628 | opcode, 0); | |
d74b50be YZ |
629 | struct ceph_pagelist *pagelist; |
630 | size_t payload_len; | |
631 | ||
632 | BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); | |
633 | ||
634 | pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); | |
635 | if (!pagelist) | |
636 | return -ENOMEM; | |
637 | ||
638 | ceph_pagelist_init(pagelist); | |
639 | ||
640 | payload_len = strlen(name); | |
641 | op->xattr.name_len = payload_len; | |
642 | ceph_pagelist_append(pagelist, name, payload_len); | |
643 | ||
644 | op->xattr.value_len = size; | |
645 | ceph_pagelist_append(pagelist, value, size); | |
646 | payload_len += size; | |
647 | ||
648 | op->xattr.cmp_op = cmp_op; | |
649 | op->xattr.cmp_mode = cmp_mode; | |
650 | ||
651 | ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); | |
de2aa102 | 652 | op->indata_len = payload_len; |
d74b50be YZ |
653 | return 0; |
654 | } | |
655 | EXPORT_SYMBOL(osd_req_op_xattr_init); | |
656 | ||
c99d2d4a AE |
657 | void osd_req_op_watch_init(struct ceph_osd_request *osd_req, |
658 | unsigned int which, u16 opcode, | |
33803f33 AE |
659 | u64 cookie, u64 version, int flag) |
660 | { | |
144cba14 YZ |
661 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
662 | opcode, 0); | |
33803f33 | 663 | |
c99d2d4a | 664 | BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); |
33803f33 AE |
665 | |
666 | op->watch.cookie = cookie; | |
9ef1ee5a | 667 | op->watch.ver = version; |
33803f33 | 668 | if (opcode == CEPH_OSD_OP_WATCH && flag) |
c99d2d4a | 669 | op->watch.flag = (u8)1; |
33803f33 AE |
670 | } |
671 | EXPORT_SYMBOL(osd_req_op_watch_init); | |
672 | ||
c647b8a8 ID |
673 | void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, |
674 | unsigned int which, | |
675 | u64 expected_object_size, | |
676 | u64 expected_write_size) | |
677 | { | |
678 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, | |
144cba14 YZ |
679 | CEPH_OSD_OP_SETALLOCHINT, |
680 | 0); | |
c647b8a8 ID |
681 | |
682 | op->alloc_hint.expected_object_size = expected_object_size; | |
683 | op->alloc_hint.expected_write_size = expected_write_size; | |
684 | ||
685 | /* | |
686 | * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed | |
687 | * not worth a feature bit. Set FAILOK per-op flag to make | |
688 | * sure older osds don't trip over an unsupported opcode. | |
689 | */ | |
690 | op->flags |= CEPH_OSD_OP_FLAG_FAILOK; | |
691 | } | |
692 | EXPORT_SYMBOL(osd_req_op_alloc_hint_init); | |
693 | ||
90af3602 | 694 | static void ceph_osdc_msg_data_add(struct ceph_msg *msg, |
ec9123c5 AE |
695 | struct ceph_osd_data *osd_data) |
696 | { | |
697 | u64 length = ceph_osd_data_length(osd_data); | |
698 | ||
699 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { | |
700 | BUG_ON(length > (u64) SIZE_MAX); | |
701 | if (length) | |
90af3602 | 702 | ceph_msg_data_add_pages(msg, osd_data->pages, |
ec9123c5 AE |
703 | length, osd_data->alignment); |
704 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { | |
705 | BUG_ON(!length); | |
90af3602 | 706 | ceph_msg_data_add_pagelist(msg, osd_data->pagelist); |
ec9123c5 AE |
707 | #ifdef CONFIG_BLOCK |
708 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { | |
90af3602 | 709 | ceph_msg_data_add_bio(msg, osd_data->bio, length); |
ec9123c5 AE |
710 | #endif |
711 | } else { | |
712 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); | |
713 | } | |
714 | } | |
715 | ||
a8dd0a37 | 716 | static u64 osd_req_encode_op(struct ceph_osd_request *req, |
79528734 | 717 | struct ceph_osd_op *dst, unsigned int which) |
a8dd0a37 | 718 | { |
79528734 | 719 | struct ceph_osd_req_op *src; |
04017e29 | 720 | struct ceph_osd_data *osd_data; |
54d50649 | 721 | u64 request_data_len = 0; |
04017e29 | 722 | u64 data_length; |
a8dd0a37 | 723 | |
79528734 AE |
724 | BUG_ON(which >= req->r_num_ops); |
725 | src = &req->r_ops[which]; | |
a8dd0a37 AE |
726 | if (WARN_ON(!osd_req_opcode_valid(src->op))) { |
727 | pr_err("unrecognized osd opcode %d\n", src->op); | |
728 | ||
729 | return 0; | |
730 | } | |
731 | ||
732 | switch (src->op) { | |
733 | case CEPH_OSD_OP_STAT: | |
49719778 AE |
734 | osd_data = &src->raw_data_in; |
735 | ceph_osdc_msg_data_add(req->r_reply, osd_data); | |
a8dd0a37 AE |
736 | break; |
737 | case CEPH_OSD_OP_READ: | |
738 | case CEPH_OSD_OP_WRITE: | |
e30b7577 | 739 | case CEPH_OSD_OP_WRITEFULL: |
ad7a60de | 740 | case CEPH_OSD_OP_ZERO: |
ad7a60de | 741 | case CEPH_OSD_OP_TRUNCATE: |
e30b7577 ID |
742 | if (src->op == CEPH_OSD_OP_WRITE || |
743 | src->op == CEPH_OSD_OP_WRITEFULL) | |
54d50649 | 744 | request_data_len = src->extent.length; |
a8dd0a37 AE |
745 | dst->extent.offset = cpu_to_le64(src->extent.offset); |
746 | dst->extent.length = cpu_to_le64(src->extent.length); | |
747 | dst->extent.truncate_size = | |
748 | cpu_to_le64(src->extent.truncate_size); | |
749 | dst->extent.truncate_seq = | |
750 | cpu_to_le32(src->extent.truncate_seq); | |
04017e29 | 751 | osd_data = &src->extent.osd_data; |
e30b7577 ID |
752 | if (src->op == CEPH_OSD_OP_WRITE || |
753 | src->op == CEPH_OSD_OP_WRITEFULL) | |
04017e29 | 754 | ceph_osdc_msg_data_add(req->r_request, osd_data); |
5476492f | 755 | else |
04017e29 | 756 | ceph_osdc_msg_data_add(req->r_reply, osd_data); |
a8dd0a37 AE |
757 | break; |
758 | case CEPH_OSD_OP_CALL: | |
a8dd0a37 AE |
759 | dst->cls.class_len = src->cls.class_len; |
760 | dst->cls.method_len = src->cls.method_len; | |
04017e29 AE |
761 | osd_data = &src->cls.request_info; |
762 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
763 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); | |
764 | request_data_len = osd_data->pagelist->length; | |
765 | ||
766 | osd_data = &src->cls.request_data; | |
767 | data_length = ceph_osd_data_length(osd_data); | |
768 | if (data_length) { | |
769 | BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); | |
770 | dst->cls.indata_len = cpu_to_le32(data_length); | |
771 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
de2aa102 | 772 | src->indata_len += data_length; |
04017e29 AE |
773 | request_data_len += data_length; |
774 | } | |
775 | osd_data = &src->cls.response_data; | |
776 | ceph_osdc_msg_data_add(req->r_reply, osd_data); | |
a8dd0a37 AE |
777 | break; |
778 | case CEPH_OSD_OP_STARTSYNC: | |
779 | break; | |
780 | case CEPH_OSD_OP_NOTIFY_ACK: | |
781 | case CEPH_OSD_OP_WATCH: | |
782 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
783 | dst->watch.ver = cpu_to_le64(src->watch.ver); | |
784 | dst->watch.flag = src->watch.flag; | |
785 | break; | |
c647b8a8 ID |
786 | case CEPH_OSD_OP_SETALLOCHINT: |
787 | dst->alloc_hint.expected_object_size = | |
788 | cpu_to_le64(src->alloc_hint.expected_object_size); | |
789 | dst->alloc_hint.expected_write_size = | |
790 | cpu_to_le64(src->alloc_hint.expected_write_size); | |
791 | break; | |
d74b50be YZ |
792 | case CEPH_OSD_OP_SETXATTR: |
793 | case CEPH_OSD_OP_CMPXATTR: | |
794 | dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); | |
795 | dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); | |
796 | dst->xattr.cmp_op = src->xattr.cmp_op; | |
797 | dst->xattr.cmp_mode = src->xattr.cmp_mode; | |
798 | osd_data = &src->xattr.osd_data; | |
799 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
800 | request_data_len = osd_data->pagelist->length; | |
801 | break; | |
864e9197 YZ |
802 | case CEPH_OSD_OP_CREATE: |
803 | case CEPH_OSD_OP_DELETE: | |
804 | break; | |
a8dd0a37 | 805 | default: |
4c46459c | 806 | pr_err("unsupported osd opcode %s\n", |
8f63ca2d | 807 | ceph_osd_op_name(src->op)); |
4c46459c | 808 | WARN_ON(1); |
a8dd0a37 AE |
809 | |
810 | return 0; | |
68b4476b | 811 | } |
7b25bf5f | 812 | |
a8dd0a37 | 813 | dst->op = cpu_to_le16(src->op); |
7b25bf5f | 814 | dst->flags = cpu_to_le32(src->flags); |
de2aa102 | 815 | dst->payload_len = cpu_to_le32(src->indata_len); |
175face2 | 816 | |
54d50649 | 817 | return request_data_len; |
68b4476b YS |
818 | } |
819 | ||
3499e8a5 YS |
820 | /* |
821 | * build new request AND message, calculate layout, and adjust file | |
822 | * extent as needed. | |
823 | * | |
824 | * if the file was recently truncated, we include information about its | |
825 | * old and new size so that the object can be updated appropriately. (we | |
826 | * avoid synchronously deleting truncated objects because it's slow.) | |
827 | * | |
828 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
829 | * data quickly. | |
830 | */ | |
831 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
832 | struct ceph_file_layout *layout, | |
833 | struct ceph_vino vino, | |
715e4cd4 YZ |
834 | u64 off, u64 *plen, |
835 | unsigned int which, int num_ops, | |
3499e8a5 YS |
836 | int opcode, int flags, |
837 | struct ceph_snap_context *snapc, | |
3499e8a5 YS |
838 | u32 truncate_seq, |
839 | u64 truncate_size, | |
153e5167 | 840 | bool use_mempool) |
3499e8a5 | 841 | { |
68b4476b | 842 | struct ceph_osd_request *req; |
75d1c941 AE |
843 | u64 objnum = 0; |
844 | u64 objoff = 0; | |
845 | u64 objlen = 0; | |
6816282d | 846 | int r; |
68b4476b | 847 | |
ad7a60de | 848 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
864e9197 YZ |
849 | opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && |
850 | opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); | |
68b4476b | 851 | |
acead002 | 852 | req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, |
ae7ca4a3 | 853 | GFP_NOFS); |
13d1ad16 ID |
854 | if (!req) { |
855 | r = -ENOMEM; | |
856 | goto fail; | |
857 | } | |
79528734 | 858 | |
d178a9e7 | 859 | req->r_flags = flags; |
3499e8a5 YS |
860 | |
861 | /* calculate max write size */ | |
a19dadfb | 862 | r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); |
13d1ad16 ID |
863 | if (r) |
864 | goto fail; | |
a19dadfb | 865 | |
864e9197 | 866 | if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { |
144cba14 | 867 | osd_req_op_init(req, which, opcode, 0); |
864e9197 YZ |
868 | } else { |
869 | u32 object_size = le32_to_cpu(layout->fl_object_size); | |
870 | u32 object_base = off - objoff; | |
871 | if (!(truncate_seq == 1 && truncate_size == -1ULL)) { | |
872 | if (truncate_size <= object_base) { | |
873 | truncate_size = 0; | |
874 | } else { | |
875 | truncate_size -= object_base; | |
876 | if (truncate_size > object_size) | |
877 | truncate_size = object_size; | |
878 | } | |
ccca4e37 | 879 | } |
715e4cd4 | 880 | osd_req_op_extent_init(req, which, opcode, objoff, objlen, |
864e9197 YZ |
881 | truncate_size, truncate_seq); |
882 | } | |
d18d1e28 | 883 | |
3c972c95 | 884 | req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); |
d30291b9 | 885 | ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); |
dbe0fc41 | 886 | |
13d1ad16 ID |
887 | r = ceph_osdc_alloc_messages(req, GFP_NOFS); |
888 | if (r) | |
889 | goto fail; | |
890 | ||
f24e9980 | 891 | return req; |
13d1ad16 ID |
892 | |
893 | fail: | |
894 | ceph_osdc_put_request(req); | |
895 | return ERR_PTR(r); | |
f24e9980 | 896 | } |
3d14c5d2 | 897 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
898 | |
899 | /* | |
900 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
901 | */ | |
fcd00b68 | 902 | DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) |
f24e9980 SW |
903 | |
904 | static struct ceph_osd_request * | |
905 | __lookup_request_ge(struct ceph_osd_client *osdc, | |
906 | u64 tid) | |
907 | { | |
908 | struct ceph_osd_request *req; | |
909 | struct rb_node *n = osdc->requests.rb_node; | |
910 | ||
911 | while (n) { | |
912 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
913 | if (tid < req->r_tid) { | |
914 | if (!n->rb_left) | |
915 | return req; | |
916 | n = n->rb_left; | |
917 | } else if (tid > req->r_tid) { | |
918 | n = n->rb_right; | |
919 | } else { | |
920 | return req; | |
921 | } | |
922 | } | |
923 | return NULL; | |
924 | } | |
925 | ||
2cc6128a ID |
926 | static void __kick_linger_request(struct ceph_osd_request *req) |
927 | { | |
928 | struct ceph_osd_client *osdc = req->r_osdc; | |
929 | struct ceph_osd *osd = req->r_osd; | |
930 | ||
931 | /* | |
932 | * Linger requests need to be resent with a new tid to avoid | |
933 | * the dup op detection logic on the OSDs. Achieve this with | |
934 | * a re-register dance instead of open-coding. | |
935 | */ | |
936 | ceph_osdc_get_request(req); | |
937 | if (!list_empty(&req->r_linger_item)) | |
938 | __unregister_linger_request(osdc, req); | |
939 | else | |
940 | __unregister_request(osdc, req); | |
941 | __register_request(osdc, req); | |
942 | ceph_osdc_put_request(req); | |
943 | ||
944 | /* | |
945 | * Unless request has been registered as both normal and | |
946 | * lingering, __unregister{,_linger}_request clears r_osd. | |
947 | * However, here we need to preserve r_osd to make sure we | |
948 | * requeue on the same OSD. | |
949 | */ | |
950 | WARN_ON(req->r_osd || !osd); | |
951 | req->r_osd = osd; | |
952 | ||
953 | dout("%s requeueing %p tid %llu\n", __func__, req, req->r_tid); | |
954 | __enqueue_request(req); | |
955 | } | |
956 | ||
6f6c7006 SW |
957 | /* |
958 | * Resubmit requests pending on the given osd. | |
959 | */ | |
960 | static void __kick_osd_requests(struct ceph_osd_client *osdc, | |
961 | struct ceph_osd *osd) | |
962 | { | |
a40c4f10 | 963 | struct ceph_osd_request *req, *nreq; |
e02493c0 | 964 | LIST_HEAD(resend); |
2cc6128a | 965 | LIST_HEAD(resend_linger); |
6f6c7006 SW |
966 | int err; |
967 | ||
2cc6128a | 968 | dout("%s osd%d\n", __func__, osd->o_osd); |
6f6c7006 | 969 | err = __reset_osd(osdc, osd); |
685a7555 | 970 | if (err) |
6f6c7006 | 971 | return; |
2cc6128a | 972 | |
e02493c0 AE |
973 | /* |
974 | * Build up a list of requests to resend by traversing the | |
975 | * osd's list of requests. Requests for a given object are | |
976 | * sent in tid order, and that is also the order they're | |
977 | * kept on this list. Therefore all requests that are in | |
978 | * flight will be found first, followed by all requests that | |
979 | * have not yet been sent. And to resend requests while | |
980 | * preserving this order we will want to put any sent | |
981 | * requests back on the front of the osd client's unsent | |
982 | * list. | |
983 | * | |
984 | * So we build a separate ordered list of already-sent | |
985 | * requests for the affected osd and splice it onto the | |
986 | * front of the osd client's unsent list. Once we've seen a | |
987 | * request that has not yet been sent we're done. Those | |
988 | * requests are already sitting right where they belong. | |
989 | */ | |
6f6c7006 | 990 | list_for_each_entry(req, &osd->o_requests, r_osd_item) { |
e02493c0 AE |
991 | if (!req->r_sent) |
992 | break; | |
2cc6128a ID |
993 | |
994 | if (!req->r_linger) { | |
995 | dout("%s requeueing %p tid %llu\n", __func__, req, | |
996 | req->r_tid); | |
997 | list_move_tail(&req->r_req_lru_item, &resend); | |
a40c4f10 | 998 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
2cc6128a ID |
999 | } else { |
1000 | list_move_tail(&req->r_req_lru_item, &resend_linger); | |
1001 | } | |
a40c4f10 | 1002 | } |
e02493c0 | 1003 | list_splice(&resend, &osdc->req_unsent); |
a40c4f10 | 1004 | |
e02493c0 | 1005 | /* |
2cc6128a ID |
1006 | * Both registered and not yet registered linger requests are |
1007 | * enqueued with a new tid on the same OSD. We add/move them | |
1008 | * to req_unsent/o_requests at the end to keep things in tid | |
1009 | * order. | |
e02493c0 | 1010 | */ |
a40c4f10 | 1011 | list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, |
1d0326b1 | 1012 | r_linger_osd_item) { |
2cc6128a ID |
1013 | WARN_ON(!list_empty(&req->r_req_lru_item)); |
1014 | __kick_linger_request(req); | |
6f6c7006 | 1015 | } |
2cc6128a ID |
1016 | |
1017 | list_for_each_entry_safe(req, nreq, &resend_linger, r_req_lru_item) | |
1018 | __kick_linger_request(req); | |
6f6c7006 SW |
1019 | } |
1020 | ||
f24e9980 | 1021 | /* |
81b024e7 | 1022 | * If the osd connection drops, we need to resubmit all requests. |
f24e9980 SW |
1023 | */ |
1024 | static void osd_reset(struct ceph_connection *con) | |
1025 | { | |
1026 | struct ceph_osd *osd = con->private; | |
1027 | struct ceph_osd_client *osdc; | |
1028 | ||
1029 | if (!osd) | |
1030 | return; | |
1031 | dout("osd_reset osd%d\n", osd->o_osd); | |
1032 | osdc = osd->o_osdc; | |
f24e9980 | 1033 | down_read(&osdc->map_sem); |
83aff95e SW |
1034 | mutex_lock(&osdc->request_mutex); |
1035 | __kick_osd_requests(osdc, osd); | |
f9d25199 | 1036 | __send_queued(osdc); |
83aff95e | 1037 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1038 | up_read(&osdc->map_sem); |
1039 | } | |
1040 | ||
1041 | /* | |
1042 | * Track open sessions with osds. | |
1043 | */ | |
e10006f8 | 1044 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
1045 | { |
1046 | struct ceph_osd *osd; | |
1047 | ||
1048 | osd = kzalloc(sizeof(*osd), GFP_NOFS); | |
1049 | if (!osd) | |
1050 | return NULL; | |
1051 | ||
1052 | atomic_set(&osd->o_ref, 1); | |
1053 | osd->o_osdc = osdc; | |
e10006f8 | 1054 | osd->o_osd = onum; |
f407731d | 1055 | RB_CLEAR_NODE(&osd->o_node); |
f24e9980 | 1056 | INIT_LIST_HEAD(&osd->o_requests); |
a40c4f10 | 1057 | INIT_LIST_HEAD(&osd->o_linger_requests); |
f5a2041b | 1058 | INIT_LIST_HEAD(&osd->o_osd_lru); |
f24e9980 SW |
1059 | osd->o_incarnation = 1; |
1060 | ||
b7a9e5dd | 1061 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 1062 | |
422d2cb8 | 1063 | INIT_LIST_HEAD(&osd->o_keepalive_item); |
f24e9980 SW |
1064 | return osd; |
1065 | } | |
1066 | ||
1067 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
1068 | { | |
1069 | if (atomic_inc_not_zero(&osd->o_ref)) { | |
1070 | dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, | |
1071 | atomic_read(&osd->o_ref)); | |
1072 | return osd; | |
1073 | } else { | |
1074 | dout("get_osd %p FAIL\n", osd); | |
1075 | return NULL; | |
1076 | } | |
1077 | } | |
1078 | ||
1079 | static void put_osd(struct ceph_osd *osd) | |
1080 | { | |
1081 | dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), | |
1082 | atomic_read(&osd->o_ref) - 1); | |
b28ec2f3 | 1083 | if (atomic_dec_and_test(&osd->o_ref)) { |
b28ec2f3 | 1084 | if (osd->o_auth.authorizer) |
6c1ea260 | 1085 | ceph_auth_destroy_authorizer(osd->o_auth.authorizer); |
f24e9980 | 1086 | kfree(osd); |
79494d1b | 1087 | } |
f24e9980 SW |
1088 | } |
1089 | ||
fcd00b68 ID |
1090 | DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) |
1091 | ||
f24e9980 SW |
1092 | /* |
1093 | * remove an osd from our map | |
1094 | */ | |
f5a2041b | 1095 | static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 1096 | { |
7eb71e03 | 1097 | dout("%s %p osd%d\n", __func__, osd, osd->o_osd); |
cc9f1f51 ID |
1098 | WARN_ON(!list_empty(&osd->o_requests)); |
1099 | WARN_ON(!list_empty(&osd->o_linger_requests)); | |
7c6e6fc5 | 1100 | |
f5a2041b | 1101 | list_del_init(&osd->o_osd_lru); |
fcd00b68 | 1102 | erase_osd(&osdc->osds, osd); |
7eb71e03 ID |
1103 | } |
1104 | ||
1105 | static void remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) | |
1106 | { | |
1107 | dout("%s %p osd%d\n", __func__, osd, osd->o_osd); | |
1108 | ||
1109 | if (!RB_EMPTY_NODE(&osd->o_node)) { | |
1110 | ceph_con_close(&osd->o_con); | |
1111 | __remove_osd(osdc, osd); | |
1112 | put_osd(osd); | |
1113 | } | |
f24e9980 SW |
1114 | } |
1115 | ||
f5a2041b YS |
1116 | static void __move_osd_to_lru(struct ceph_osd_client *osdc, |
1117 | struct ceph_osd *osd) | |
1118 | { | |
bbf37ec3 | 1119 | dout("%s %p\n", __func__, osd); |
f5a2041b | 1120 | BUG_ON(!list_empty(&osd->o_osd_lru)); |
bbf37ec3 | 1121 | |
f5a2041b | 1122 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); |
a319bf56 | 1123 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; |
f5a2041b YS |
1124 | } |
1125 | ||
bbf37ec3 ID |
1126 | static void maybe_move_osd_to_lru(struct ceph_osd_client *osdc, |
1127 | struct ceph_osd *osd) | |
1128 | { | |
1129 | dout("%s %p\n", __func__, osd); | |
1130 | ||
1131 | if (list_empty(&osd->o_requests) && | |
1132 | list_empty(&osd->o_linger_requests)) | |
1133 | __move_osd_to_lru(osdc, osd); | |
1134 | } | |
1135 | ||
f5a2041b YS |
1136 | static void __remove_osd_from_lru(struct ceph_osd *osd) |
1137 | { | |
1138 | dout("__remove_osd_from_lru %p\n", osd); | |
1139 | if (!list_empty(&osd->o_osd_lru)) | |
1140 | list_del_init(&osd->o_osd_lru); | |
1141 | } | |
1142 | ||
f24e9980 SW |
1143 | /* |
1144 | * reset osd connect | |
1145 | */ | |
f5a2041b | 1146 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 1147 | { |
c3acb181 | 1148 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 1149 | |
f5a2041b | 1150 | dout("__reset_osd %p osd%d\n", osd, osd->o_osd); |
a40c4f10 YS |
1151 | if (list_empty(&osd->o_requests) && |
1152 | list_empty(&osd->o_linger_requests)) { | |
7eb71e03 | 1153 | remove_osd(osdc, osd); |
c3acb181 AE |
1154 | return -ENODEV; |
1155 | } | |
1156 | ||
1157 | peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; | |
1158 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && | |
1159 | !ceph_con_opened(&osd->o_con)) { | |
1160 | struct ceph_osd_request *req; | |
1161 | ||
0b4af2e8 ID |
1162 | dout("osd addr hasn't changed and connection never opened, " |
1163 | "letting msgr retry\n"); | |
87b315a5 SW |
1164 | /* touch each r_stamp for handle_timeout()'s benfit */ |
1165 | list_for_each_entry(req, &osd->o_requests, r_osd_item) | |
1166 | req->r_stamp = jiffies; | |
c3acb181 AE |
1167 | |
1168 | return -EAGAIN; | |
f24e9980 | 1169 | } |
c3acb181 AE |
1170 | |
1171 | ceph_con_close(&osd->o_con); | |
1172 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
1173 | osd->o_incarnation++; | |
1174 | ||
1175 | return 0; | |
f24e9980 SW |
1176 | } |
1177 | ||
422d2cb8 YS |
1178 | static void __schedule_osd_timeout(struct ceph_osd_client *osdc) |
1179 | { | |
1180 | schedule_delayed_work(&osdc->timeout_work, | |
a319bf56 | 1181 | osdc->client->options->osd_keepalive_timeout); |
422d2cb8 YS |
1182 | } |
1183 | ||
1184 | static void __cancel_osd_timeout(struct ceph_osd_client *osdc) | |
1185 | { | |
1186 | cancel_delayed_work(&osdc->timeout_work); | |
1187 | } | |
f24e9980 SW |
1188 | |
1189 | /* | |
1190 | * Register request, assign tid. If this is the first request, set up | |
1191 | * the timeout event. | |
1192 | */ | |
a40c4f10 YS |
1193 | static void __register_request(struct ceph_osd_client *osdc, |
1194 | struct ceph_osd_request *req) | |
f24e9980 | 1195 | { |
f24e9980 | 1196 | req->r_tid = ++osdc->last_tid; |
6df058c0 | 1197 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); |
77f38e0e | 1198 | dout("__register_request %p tid %lld\n", req, req->r_tid); |
fcd00b68 | 1199 | insert_request(&osdc->requests, req); |
f24e9980 SW |
1200 | ceph_osdc_get_request(req); |
1201 | osdc->num_requests++; | |
f24e9980 | 1202 | if (osdc->num_requests == 1) { |
422d2cb8 YS |
1203 | dout(" first request, scheduling timeout\n"); |
1204 | __schedule_osd_timeout(osdc); | |
f24e9980 | 1205 | } |
a40c4f10 YS |
1206 | } |
1207 | ||
f24e9980 SW |
1208 | /* |
1209 | * called under osdc->request_mutex | |
1210 | */ | |
1211 | static void __unregister_request(struct ceph_osd_client *osdc, | |
1212 | struct ceph_osd_request *req) | |
1213 | { | |
35f9f8a0 SW |
1214 | if (RB_EMPTY_NODE(&req->r_node)) { |
1215 | dout("__unregister_request %p tid %lld not registered\n", | |
1216 | req, req->r_tid); | |
1217 | return; | |
1218 | } | |
1219 | ||
f24e9980 | 1220 | dout("__unregister_request %p tid %lld\n", req, req->r_tid); |
fcd00b68 | 1221 | erase_request(&osdc->requests, req); |
f24e9980 SW |
1222 | osdc->num_requests--; |
1223 | ||
0ba6478d SW |
1224 | if (req->r_osd) { |
1225 | /* make sure the original request isn't in flight. */ | |
6740a845 | 1226 | ceph_msg_revoke(req->r_request); |
0ba6478d SW |
1227 | |
1228 | list_del_init(&req->r_osd_item); | |
bbf37ec3 | 1229 | maybe_move_osd_to_lru(osdc, req->r_osd); |
4f23409e | 1230 | if (list_empty(&req->r_linger_osd_item)) |
a40c4f10 | 1231 | req->r_osd = NULL; |
0ba6478d | 1232 | } |
f24e9980 | 1233 | |
7d5f2481 | 1234 | list_del_init(&req->r_req_lru_item); |
f24e9980 SW |
1235 | ceph_osdc_put_request(req); |
1236 | ||
422d2cb8 YS |
1237 | if (osdc->num_requests == 0) { |
1238 | dout(" no requests, canceling timeout\n"); | |
1239 | __cancel_osd_timeout(osdc); | |
f24e9980 SW |
1240 | } |
1241 | } | |
1242 | ||
1243 | /* | |
1244 | * Cancel a previously queued request message | |
1245 | */ | |
1246 | static void __cancel_request(struct ceph_osd_request *req) | |
1247 | { | |
6bc18876 | 1248 | if (req->r_sent && req->r_osd) { |
6740a845 | 1249 | ceph_msg_revoke(req->r_request); |
f24e9980 SW |
1250 | req->r_sent = 0; |
1251 | } | |
1252 | } | |
1253 | ||
a40c4f10 YS |
1254 | static void __register_linger_request(struct ceph_osd_client *osdc, |
1255 | struct ceph_osd_request *req) | |
1256 | { | |
af593064 ID |
1257 | dout("%s %p tid %llu\n", __func__, req, req->r_tid); |
1258 | WARN_ON(!req->r_linger); | |
1259 | ||
96e4dac6 | 1260 | ceph_osdc_get_request(req); |
a40c4f10 | 1261 | list_add_tail(&req->r_linger_item, &osdc->req_linger); |
6194ea89 | 1262 | if (req->r_osd) |
1d0326b1 | 1263 | list_add_tail(&req->r_linger_osd_item, |
6194ea89 | 1264 | &req->r_osd->o_linger_requests); |
a40c4f10 YS |
1265 | } |
1266 | ||
1267 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
1268 | struct ceph_osd_request *req) | |
1269 | { | |
af593064 ID |
1270 | WARN_ON(!req->r_linger); |
1271 | ||
1272 | if (list_empty(&req->r_linger_item)) { | |
1273 | dout("%s %p tid %llu not registered\n", __func__, req, | |
1274 | req->r_tid); | |
1275 | return; | |
1276 | } | |
1277 | ||
1278 | dout("%s %p tid %llu\n", __func__, req, req->r_tid); | |
61c74035 | 1279 | list_del_init(&req->r_linger_item); |
af593064 | 1280 | |
a40c4f10 | 1281 | if (req->r_osd) { |
1d0326b1 | 1282 | list_del_init(&req->r_linger_osd_item); |
bbf37ec3 | 1283 | maybe_move_osd_to_lru(osdc, req->r_osd); |
fbdb9190 SW |
1284 | if (list_empty(&req->r_osd_item)) |
1285 | req->r_osd = NULL; | |
a40c4f10 | 1286 | } |
96e4dac6 | 1287 | ceph_osdc_put_request(req); |
a40c4f10 YS |
1288 | } |
1289 | ||
a40c4f10 YS |
1290 | void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, |
1291 | struct ceph_osd_request *req) | |
1292 | { | |
1293 | if (!req->r_linger) { | |
1294 | dout("set_request_linger %p\n", req); | |
1295 | req->r_linger = 1; | |
a40c4f10 YS |
1296 | } |
1297 | } | |
1298 | EXPORT_SYMBOL(ceph_osdc_set_request_linger); | |
1299 | ||
63244fa1 ID |
1300 | static bool __pool_full(struct ceph_pg_pool_info *pi) |
1301 | { | |
1302 | return pi->flags & CEPH_POOL_FLAG_FULL; | |
1303 | } | |
1304 | ||
d29adb34 JD |
1305 | /* |
1306 | * Returns whether a request should be blocked from being sent | |
1307 | * based on the current osdmap and osd_client settings. | |
1308 | * | |
1309 | * Caller should hold map_sem for read. | |
1310 | */ | |
1311 | static bool __req_should_be_paused(struct ceph_osd_client *osdc, | |
1312 | struct ceph_osd_request *req) | |
1313 | { | |
1314 | bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); | |
1315 | bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || | |
1316 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); | |
1317 | return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) || | |
1318 | (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr); | |
1319 | } | |
1320 | ||
63244fa1 ID |
1321 | static bool target_should_be_paused(struct ceph_osd_client *osdc, |
1322 | const struct ceph_osd_request_target *t, | |
1323 | struct ceph_pg_pool_info *pi) | |
1324 | { | |
1325 | bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); | |
1326 | bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || | |
1327 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || | |
1328 | __pool_full(pi); | |
1329 | ||
1330 | WARN_ON(pi->id != t->base_oloc.pool); | |
1331 | return (t->flags & CEPH_OSD_FLAG_READ && pauserd) || | |
1332 | (t->flags & CEPH_OSD_FLAG_WRITE && pausewr); | |
1333 | } | |
1334 | ||
17a13e40 ID |
1335 | /* |
1336 | * Calculate mapping of a request to a PG. Takes tiering into account. | |
1337 | */ | |
1338 | static int __calc_request_pg(struct ceph_osdmap *osdmap, | |
1339 | struct ceph_osd_request *req, | |
1340 | struct ceph_pg *pg_out) | |
1341 | { | |
205ee118 ID |
1342 | bool need_check_tiering; |
1343 | ||
1344 | need_check_tiering = false; | |
1345 | if (req->r_target_oloc.pool == -1) { | |
1346 | req->r_target_oloc = req->r_base_oloc; /* struct */ | |
1347 | need_check_tiering = true; | |
1348 | } | |
d30291b9 | 1349 | if (ceph_oid_empty(&req->r_target_oid)) { |
205ee118 ID |
1350 | ceph_oid_copy(&req->r_target_oid, &req->r_base_oid); |
1351 | need_check_tiering = true; | |
1352 | } | |
1353 | ||
1354 | if (need_check_tiering && | |
1355 | (req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { | |
17a13e40 ID |
1356 | struct ceph_pg_pool_info *pi; |
1357 | ||
205ee118 | 1358 | pi = ceph_pg_pool_by_id(osdmap, req->r_target_oloc.pool); |
17a13e40 ID |
1359 | if (pi) { |
1360 | if ((req->r_flags & CEPH_OSD_FLAG_READ) && | |
1361 | pi->read_tier >= 0) | |
205ee118 | 1362 | req->r_target_oloc.pool = pi->read_tier; |
17a13e40 ID |
1363 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && |
1364 | pi->write_tier >= 0) | |
205ee118 | 1365 | req->r_target_oloc.pool = pi->write_tier; |
17a13e40 ID |
1366 | } |
1367 | /* !pi is caught in ceph_oloc_oid_to_pg() */ | |
1368 | } | |
1369 | ||
d9591f5e ID |
1370 | return ceph_object_locator_to_pg(osdmap, &req->r_target_oid, |
1371 | &req->r_target_oloc, pg_out); | |
17a13e40 ID |
1372 | } |
1373 | ||
63244fa1 ID |
1374 | enum calc_target_result { |
1375 | CALC_TARGET_NO_ACTION = 0, | |
1376 | CALC_TARGET_NEED_RESEND, | |
1377 | CALC_TARGET_POOL_DNE, | |
1378 | }; | |
1379 | ||
1380 | static enum calc_target_result calc_target(struct ceph_osd_client *osdc, | |
1381 | struct ceph_osd_request_target *t, | |
1382 | u32 *last_force_resend, | |
1383 | bool any_change) | |
1384 | { | |
1385 | struct ceph_pg_pool_info *pi; | |
1386 | struct ceph_pg pgid, last_pgid; | |
1387 | struct ceph_osds up, acting; | |
1388 | bool force_resend = false; | |
1389 | bool need_check_tiering = false; | |
1390 | bool need_resend = false; | |
1391 | bool sort_bitwise = ceph_osdmap_flag(osdc->osdmap, | |
1392 | CEPH_OSDMAP_SORTBITWISE); | |
1393 | enum calc_target_result ct_res; | |
1394 | int ret; | |
1395 | ||
1396 | pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); | |
1397 | if (!pi) { | |
1398 | t->osd = CEPH_HOMELESS_OSD; | |
1399 | ct_res = CALC_TARGET_POOL_DNE; | |
1400 | goto out; | |
1401 | } | |
1402 | ||
1403 | if (osdc->osdmap->epoch == pi->last_force_request_resend) { | |
1404 | if (last_force_resend && | |
1405 | *last_force_resend < pi->last_force_request_resend) { | |
1406 | *last_force_resend = pi->last_force_request_resend; | |
1407 | force_resend = true; | |
1408 | } else if (!last_force_resend) { | |
1409 | force_resend = true; | |
1410 | } | |
1411 | } | |
1412 | if (ceph_oid_empty(&t->target_oid) || force_resend) { | |
1413 | ceph_oid_copy(&t->target_oid, &t->base_oid); | |
1414 | need_check_tiering = true; | |
1415 | } | |
1416 | if (ceph_oloc_empty(&t->target_oloc) || force_resend) { | |
1417 | ceph_oloc_copy(&t->target_oloc, &t->base_oloc); | |
1418 | need_check_tiering = true; | |
1419 | } | |
1420 | ||
1421 | if (need_check_tiering && | |
1422 | (t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { | |
1423 | if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) | |
1424 | t->target_oloc.pool = pi->read_tier; | |
1425 | if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) | |
1426 | t->target_oloc.pool = pi->write_tier; | |
1427 | } | |
1428 | ||
1429 | ret = ceph_object_locator_to_pg(osdc->osdmap, &t->target_oid, | |
1430 | &t->target_oloc, &pgid); | |
1431 | if (ret) { | |
1432 | WARN_ON(ret != -ENOENT); | |
1433 | t->osd = CEPH_HOMELESS_OSD; | |
1434 | ct_res = CALC_TARGET_POOL_DNE; | |
1435 | goto out; | |
1436 | } | |
1437 | last_pgid.pool = pgid.pool; | |
1438 | last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); | |
1439 | ||
1440 | ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting); | |
1441 | if (any_change && | |
1442 | ceph_is_new_interval(&t->acting, | |
1443 | &acting, | |
1444 | &t->up, | |
1445 | &up, | |
1446 | t->size, | |
1447 | pi->size, | |
1448 | t->min_size, | |
1449 | pi->min_size, | |
1450 | t->pg_num, | |
1451 | pi->pg_num, | |
1452 | t->sort_bitwise, | |
1453 | sort_bitwise, | |
1454 | &last_pgid)) | |
1455 | force_resend = true; | |
1456 | ||
1457 | if (t->paused && !target_should_be_paused(osdc, t, pi)) { | |
1458 | t->paused = false; | |
1459 | need_resend = true; | |
1460 | } | |
1461 | ||
1462 | if (ceph_pg_compare(&t->pgid, &pgid) || | |
1463 | ceph_osds_changed(&t->acting, &acting, any_change) || | |
1464 | force_resend) { | |
1465 | t->pgid = pgid; /* struct */ | |
1466 | ceph_osds_copy(&t->acting, &acting); | |
1467 | ceph_osds_copy(&t->up, &up); | |
1468 | t->size = pi->size; | |
1469 | t->min_size = pi->min_size; | |
1470 | t->pg_num = pi->pg_num; | |
1471 | t->pg_num_mask = pi->pg_num_mask; | |
1472 | t->sort_bitwise = sort_bitwise; | |
1473 | ||
1474 | t->osd = acting.primary; | |
1475 | need_resend = true; | |
1476 | } | |
1477 | ||
1478 | ct_res = need_resend ? CALC_TARGET_NEED_RESEND : CALC_TARGET_NO_ACTION; | |
1479 | out: | |
1480 | dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); | |
1481 | return ct_res; | |
1482 | } | |
1483 | ||
f671b581 ID |
1484 | static void __enqueue_request(struct ceph_osd_request *req) |
1485 | { | |
1486 | struct ceph_osd_client *osdc = req->r_osdc; | |
1487 | ||
1488 | dout("%s %p tid %llu to osd%d\n", __func__, req, req->r_tid, | |
1489 | req->r_osd ? req->r_osd->o_osd : -1); | |
1490 | ||
1491 | if (req->r_osd) { | |
1492 | __remove_osd_from_lru(req->r_osd); | |
1493 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); | |
1494 | list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); | |
1495 | } else { | |
1496 | list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); | |
1497 | } | |
1498 | } | |
1499 | ||
f24e9980 SW |
1500 | /* |
1501 | * Pick an osd (the first 'up' osd in the pg), allocate the osd struct | |
1502 | * (as needed), and set the request r_osd appropriately. If there is | |
25985edc | 1503 | * no up osd, set r_osd to NULL. Move the request to the appropriate list |
6f6c7006 | 1504 | * (unsent, homeless) or leave on in-flight lru. |
f24e9980 SW |
1505 | * |
1506 | * Return 0 if unchanged, 1 if changed, or negative on error. | |
1507 | * | |
1508 | * Caller should hold map_sem for read and request_mutex. | |
1509 | */ | |
6f6c7006 | 1510 | static int __map_request(struct ceph_osd_client *osdc, |
38d6453c | 1511 | struct ceph_osd_request *req, int force_resend) |
f24e9980 | 1512 | { |
5b191d99 | 1513 | struct ceph_pg pgid; |
6f3bfd45 | 1514 | struct ceph_osds up, acting; |
f24e9980 | 1515 | int err; |
d29adb34 | 1516 | bool was_paused; |
f24e9980 | 1517 | |
6f6c7006 | 1518 | dout("map_request %p tid %lld\n", req, req->r_tid); |
17a13e40 ID |
1519 | |
1520 | err = __calc_request_pg(osdc->osdmap, req, &pgid); | |
6f6c7006 SW |
1521 | if (err) { |
1522 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f24e9980 | 1523 | return err; |
6f6c7006 | 1524 | } |
7740a42f SW |
1525 | req->r_pgid = pgid; |
1526 | ||
6f3bfd45 | 1527 | ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting); |
f24e9980 | 1528 | |
d29adb34 JD |
1529 | was_paused = req->r_paused; |
1530 | req->r_paused = __req_should_be_paused(osdc, req); | |
1531 | if (was_paused && !req->r_paused) | |
1532 | force_resend = 1; | |
1533 | ||
38d6453c | 1534 | if ((!force_resend && |
6f3bfd45 | 1535 | req->r_osd && req->r_osd->o_osd == acting.primary && |
d85b7056 | 1536 | req->r_sent >= req->r_osd->o_incarnation && |
6f3bfd45 ID |
1537 | req->r_num_pg_osds == acting.size && |
1538 | memcmp(req->r_pg_osds, acting.osds, | |
1539 | acting.size * sizeof(acting.osds[0])) == 0) || | |
1540 | (req->r_osd == NULL && acting.primary == -1) || | |
d29adb34 | 1541 | req->r_paused) |
f24e9980 SW |
1542 | return 0; /* no change */ |
1543 | ||
5b191d99 | 1544 | dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", |
6f3bfd45 | 1545 | req->r_tid, pgid.pool, pgid.seed, acting.primary, |
f24e9980 SW |
1546 | req->r_osd ? req->r_osd->o_osd : -1); |
1547 | ||
d85b7056 | 1548 | /* record full pg acting set */ |
6f3bfd45 ID |
1549 | memcpy(req->r_pg_osds, acting.osds, |
1550 | acting.size * sizeof(acting.osds[0])); | |
1551 | req->r_num_pg_osds = acting.size; | |
d85b7056 | 1552 | |
f24e9980 SW |
1553 | if (req->r_osd) { |
1554 | __cancel_request(req); | |
1555 | list_del_init(&req->r_osd_item); | |
a390de02 | 1556 | list_del_init(&req->r_linger_osd_item); |
f24e9980 SW |
1557 | req->r_osd = NULL; |
1558 | } | |
1559 | ||
6f3bfd45 ID |
1560 | req->r_osd = lookup_osd(&osdc->osds, acting.primary); |
1561 | if (!req->r_osd && acting.primary >= 0) { | |
c99eb1c7 | 1562 | err = -ENOMEM; |
6f3bfd45 | 1563 | req->r_osd = create_osd(osdc, acting.primary); |
6f6c7006 SW |
1564 | if (!req->r_osd) { |
1565 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
c99eb1c7 | 1566 | goto out; |
6f6c7006 | 1567 | } |
f24e9980 | 1568 | |
6f3bfd45 ID |
1569 | dout("map_request osd %p is osd%d\n", req->r_osd, |
1570 | acting.primary); | |
fcd00b68 | 1571 | insert_osd(&osdc->osds, req->r_osd); |
f24e9980 | 1572 | |
b7a9e5dd | 1573 | ceph_con_open(&req->r_osd->o_con, |
6f3bfd45 ID |
1574 | CEPH_ENTITY_TYPE_OSD, acting.primary, |
1575 | &osdc->osdmap->osd_addr[acting.primary]); | |
f24e9980 SW |
1576 | } |
1577 | ||
f671b581 | 1578 | __enqueue_request(req); |
d85b7056 | 1579 | err = 1; /* osd or pg changed */ |
f24e9980 SW |
1580 | |
1581 | out: | |
f24e9980 SW |
1582 | return err; |
1583 | } | |
1584 | ||
1585 | /* | |
1586 | * caller should hold map_sem (for read) and request_mutex | |
1587 | */ | |
56e925b6 SW |
1588 | static void __send_request(struct ceph_osd_client *osdc, |
1589 | struct ceph_osd_request *req) | |
f24e9980 | 1590 | { |
1b83bef2 | 1591 | void *p; |
f24e9980 | 1592 | |
1b83bef2 SW |
1593 | dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", |
1594 | req, req->r_tid, req->r_osd->o_osd, req->r_flags, | |
1595 | (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); | |
1596 | ||
1597 | /* fill in message content that changes each time we send it */ | |
1598 | put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); | |
1599 | put_unaligned_le32(req->r_flags, req->r_request_flags); | |
205ee118 | 1600 | put_unaligned_le64(req->r_target_oloc.pool, req->r_request_pool); |
1b83bef2 SW |
1601 | p = req->r_request_pgid; |
1602 | ceph_encode_64(&p, req->r_pgid.pool); | |
1603 | ceph_encode_32(&p, req->r_pgid.seed); | |
1604 | put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ | |
1605 | memcpy(req->r_request_reassert_version, &req->r_reassert_version, | |
1606 | sizeof(req->r_reassert_version)); | |
2169aea6 | 1607 | |
3dd72fc0 | 1608 | req->r_stamp = jiffies; |
07a27e22 | 1609 | list_move_tail(&req->r_req_lru_item, &osdc->req_lru); |
f24e9980 SW |
1610 | |
1611 | ceph_msg_get(req->r_request); /* send consumes a ref */ | |
26be8808 | 1612 | |
f24e9980 | 1613 | req->r_sent = req->r_osd->o_incarnation; |
26be8808 AE |
1614 | |
1615 | ceph_con_send(&req->r_osd->o_con, req->r_request); | |
f24e9980 SW |
1616 | } |
1617 | ||
6f6c7006 SW |
1618 | /* |
1619 | * Send any requests in the queue (req_unsent). | |
1620 | */ | |
f9d25199 | 1621 | static void __send_queued(struct ceph_osd_client *osdc) |
6f6c7006 SW |
1622 | { |
1623 | struct ceph_osd_request *req, *tmp; | |
1624 | ||
f9d25199 AE |
1625 | dout("__send_queued\n"); |
1626 | list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) | |
6f6c7006 | 1627 | __send_request(osdc, req); |
6f6c7006 SW |
1628 | } |
1629 | ||
0bbfdfe8 ID |
1630 | /* |
1631 | * Caller should hold map_sem for read and request_mutex. | |
1632 | */ | |
1633 | static int __ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
1634 | struct ceph_osd_request *req, | |
1635 | bool nofail) | |
1636 | { | |
1637 | int rc; | |
1638 | ||
1639 | __register_request(osdc, req); | |
1640 | req->r_sent = 0; | |
1641 | req->r_got_reply = 0; | |
1642 | rc = __map_request(osdc, req, 0); | |
1643 | if (rc < 0) { | |
1644 | if (nofail) { | |
1645 | dout("osdc_start_request failed map, " | |
1646 | " will retry %lld\n", req->r_tid); | |
1647 | rc = 0; | |
1648 | } else { | |
1649 | __unregister_request(osdc, req); | |
1650 | } | |
1651 | return rc; | |
1652 | } | |
1653 | ||
1654 | if (req->r_osd == NULL) { | |
1655 | dout("send_request %p no up osds in pg\n", req); | |
1656 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1657 | } else { | |
1658 | __send_queued(osdc); | |
1659 | } | |
1660 | ||
1661 | return 0; | |
1662 | } | |
1663 | ||
f24e9980 SW |
1664 | /* |
1665 | * Timeout callback, called every N seconds when 1 or more osd | |
1666 | * requests has been active for more than N seconds. When this | |
1667 | * happens, we ping all OSDs with requests who have timed out to | |
1668 | * ensure any communications channel reset is detected. Reset the | |
1669 | * request timeouts another N seconds in the future as we go. | |
1670 | * Reschedule the timeout event another N seconds in future (unless | |
1671 | * there are no open requests). | |
1672 | */ | |
1673 | static void handle_timeout(struct work_struct *work) | |
1674 | { | |
1675 | struct ceph_osd_client *osdc = | |
1676 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
a319bf56 | 1677 | struct ceph_options *opts = osdc->client->options; |
83aff95e | 1678 | struct ceph_osd_request *req; |
f24e9980 | 1679 | struct ceph_osd *osd; |
422d2cb8 | 1680 | struct list_head slow_osds; |
f24e9980 SW |
1681 | dout("timeout\n"); |
1682 | down_read(&osdc->map_sem); | |
1683 | ||
1684 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1685 | ||
1686 | mutex_lock(&osdc->request_mutex); | |
f24e9980 | 1687 | |
422d2cb8 YS |
1688 | /* |
1689 | * ping osds that are a bit slow. this ensures that if there | |
1690 | * is a break in the TCP connection we will notice, and reopen | |
1691 | * a connection with that osd (from the fault callback). | |
1692 | */ | |
1693 | INIT_LIST_HEAD(&slow_osds); | |
1694 | list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { | |
a319bf56 ID |
1695 | if (time_before(jiffies, |
1696 | req->r_stamp + opts->osd_keepalive_timeout)) | |
422d2cb8 YS |
1697 | break; |
1698 | ||
1699 | osd = req->r_osd; | |
1700 | BUG_ON(!osd); | |
1701 | dout(" tid %llu is slow, will send keepalive on osd%d\n", | |
f24e9980 | 1702 | req->r_tid, osd->o_osd); |
422d2cb8 YS |
1703 | list_move_tail(&osd->o_keepalive_item, &slow_osds); |
1704 | } | |
1705 | while (!list_empty(&slow_osds)) { | |
1706 | osd = list_entry(slow_osds.next, struct ceph_osd, | |
1707 | o_keepalive_item); | |
1708 | list_del_init(&osd->o_keepalive_item); | |
f24e9980 SW |
1709 | ceph_con_keepalive(&osd->o_con); |
1710 | } | |
1711 | ||
422d2cb8 | 1712 | __schedule_osd_timeout(osdc); |
f9d25199 | 1713 | __send_queued(osdc); |
f24e9980 | 1714 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1715 | up_read(&osdc->map_sem); |
1716 | } | |
1717 | ||
f5a2041b YS |
1718 | static void handle_osds_timeout(struct work_struct *work) |
1719 | { | |
1720 | struct ceph_osd_client *osdc = | |
1721 | container_of(work, struct ceph_osd_client, | |
1722 | osds_timeout_work.work); | |
a319bf56 | 1723 | unsigned long delay = osdc->client->options->osd_idle_ttl / 4; |
42a2c09f | 1724 | struct ceph_osd *osd, *nosd; |
f5a2041b | 1725 | |
42a2c09f | 1726 | dout("%s osdc %p\n", __func__, osdc); |
f5a2041b | 1727 | down_read(&osdc->map_sem); |
42a2c09f ID |
1728 | mutex_lock(&osdc->request_mutex); |
1729 | ||
1730 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { | |
1731 | if (time_before(jiffies, osd->lru_ttl)) | |
1732 | break; | |
1733 | ||
1734 | remove_osd(osdc, osd); | |
1735 | } | |
f5a2041b | 1736 | |
42a2c09f ID |
1737 | mutex_unlock(&osdc->request_mutex); |
1738 | up_read(&osdc->map_sem); | |
f5a2041b YS |
1739 | schedule_delayed_work(&osdc->osds_timeout_work, |
1740 | round_jiffies_relative(delay)); | |
1741 | } | |
1742 | ||
205ee118 ID |
1743 | static int ceph_oloc_decode(void **p, void *end, |
1744 | struct ceph_object_locator *oloc) | |
1745 | { | |
1746 | u8 struct_v, struct_cv; | |
1747 | u32 len; | |
1748 | void *struct_end; | |
1749 | int ret = 0; | |
1750 | ||
1751 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
1752 | struct_v = ceph_decode_8(p); | |
1753 | struct_cv = ceph_decode_8(p); | |
1754 | if (struct_v < 3) { | |
1755 | pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", | |
1756 | struct_v, struct_cv); | |
1757 | goto e_inval; | |
1758 | } | |
1759 | if (struct_cv > 6) { | |
1760 | pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", | |
1761 | struct_v, struct_cv); | |
1762 | goto e_inval; | |
1763 | } | |
1764 | len = ceph_decode_32(p); | |
1765 | ceph_decode_need(p, end, len, e_inval); | |
1766 | struct_end = *p + len; | |
1767 | ||
1768 | oloc->pool = ceph_decode_64(p); | |
1769 | *p += 4; /* skip preferred */ | |
1770 | ||
1771 | len = ceph_decode_32(p); | |
1772 | if (len > 0) { | |
1773 | pr_warn("ceph_object_locator::key is set\n"); | |
1774 | goto e_inval; | |
1775 | } | |
1776 | ||
1777 | if (struct_v >= 5) { | |
1778 | len = ceph_decode_32(p); | |
1779 | if (len > 0) { | |
1780 | pr_warn("ceph_object_locator::nspace is set\n"); | |
1781 | goto e_inval; | |
1782 | } | |
1783 | } | |
1784 | ||
1785 | if (struct_v >= 6) { | |
1786 | s64 hash = ceph_decode_64(p); | |
1787 | if (hash != -1) { | |
1788 | pr_warn("ceph_object_locator::hash is set\n"); | |
1789 | goto e_inval; | |
1790 | } | |
1791 | } | |
1792 | ||
1793 | /* skip the rest */ | |
1794 | *p = struct_end; | |
1795 | out: | |
1796 | return ret; | |
1797 | ||
1798 | e_inval: | |
1799 | ret = -EINVAL; | |
1800 | goto out; | |
1801 | } | |
1802 | ||
1803 | static int ceph_redirect_decode(void **p, void *end, | |
1804 | struct ceph_request_redirect *redir) | |
1805 | { | |
1806 | u8 struct_v, struct_cv; | |
1807 | u32 len; | |
1808 | void *struct_end; | |
1809 | int ret; | |
1810 | ||
1811 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
1812 | struct_v = ceph_decode_8(p); | |
1813 | struct_cv = ceph_decode_8(p); | |
1814 | if (struct_cv > 1) { | |
1815 | pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", | |
1816 | struct_v, struct_cv); | |
1817 | goto e_inval; | |
1818 | } | |
1819 | len = ceph_decode_32(p); | |
1820 | ceph_decode_need(p, end, len, e_inval); | |
1821 | struct_end = *p + len; | |
1822 | ||
1823 | ret = ceph_oloc_decode(p, end, &redir->oloc); | |
1824 | if (ret) | |
1825 | goto out; | |
1826 | ||
1827 | len = ceph_decode_32(p); | |
1828 | if (len > 0) { | |
1829 | pr_warn("ceph_request_redirect::object_name is set\n"); | |
1830 | goto e_inval; | |
1831 | } | |
1832 | ||
1833 | len = ceph_decode_32(p); | |
1834 | *p += len; /* skip osd_instructions */ | |
1835 | ||
1836 | /* skip the rest */ | |
1837 | *p = struct_end; | |
1838 | out: | |
1839 | return ret; | |
1840 | ||
1841 | e_inval: | |
1842 | ret = -EINVAL; | |
1843 | goto out; | |
1844 | } | |
1845 | ||
25845472 SW |
1846 | static void complete_request(struct ceph_osd_request *req) |
1847 | { | |
25845472 SW |
1848 | complete_all(&req->r_safe_completion); /* fsync waiter */ |
1849 | } | |
1850 | ||
f24e9980 SW |
1851 | /* |
1852 | * handle osd op reply. either call the callback if it is specified, | |
1853 | * or do the completion to wake up the waiting thread. | |
1854 | */ | |
70cf052d | 1855 | static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg) |
f24e9980 | 1856 | { |
1b83bef2 | 1857 | void *p, *end; |
f24e9980 | 1858 | struct ceph_osd_request *req; |
205ee118 | 1859 | struct ceph_request_redirect redir; |
f24e9980 | 1860 | u64 tid; |
1b83bef2 | 1861 | int object_len; |
79528734 AE |
1862 | unsigned int numops; |
1863 | int payload_len, flags; | |
0ceed5db | 1864 | s32 result; |
1b83bef2 SW |
1865 | s32 retry_attempt; |
1866 | struct ceph_pg pg; | |
1867 | int err; | |
1868 | u32 reassert_epoch; | |
1869 | u64 reassert_version; | |
1870 | u32 osdmap_epoch; | |
0d5af164 | 1871 | int already_completed; |
9fc6e064 | 1872 | u32 bytes; |
b0b31a8f | 1873 | u8 decode_redir; |
79528734 | 1874 | unsigned int i; |
f24e9980 | 1875 | |
6df058c0 | 1876 | tid = le64_to_cpu(msg->hdr.tid); |
1b83bef2 SW |
1877 | dout("handle_reply %p tid %llu\n", msg, tid); |
1878 | ||
1879 | p = msg->front.iov_base; | |
1880 | end = p + msg->front.iov_len; | |
1881 | ||
1882 | ceph_decode_need(&p, end, 4, bad); | |
1883 | object_len = ceph_decode_32(&p); | |
1884 | ceph_decode_need(&p, end, object_len, bad); | |
1885 | p += object_len; | |
1886 | ||
ef4859d6 | 1887 | err = ceph_decode_pgid(&p, end, &pg); |
1b83bef2 | 1888 | if (err) |
f24e9980 | 1889 | goto bad; |
1b83bef2 SW |
1890 | |
1891 | ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); | |
1892 | flags = ceph_decode_64(&p); | |
1893 | result = ceph_decode_32(&p); | |
1894 | reassert_epoch = ceph_decode_32(&p); | |
1895 | reassert_version = ceph_decode_64(&p); | |
1896 | osdmap_epoch = ceph_decode_32(&p); | |
1897 | ||
f24e9980 | 1898 | /* lookup */ |
ff513ace | 1899 | down_read(&osdc->map_sem); |
f24e9980 | 1900 | mutex_lock(&osdc->request_mutex); |
fcd00b68 | 1901 | req = lookup_request(&osdc->requests, tid); |
f24e9980 SW |
1902 | if (req == NULL) { |
1903 | dout("handle_reply tid %llu dne\n", tid); | |
8058fd45 | 1904 | goto bad_mutex; |
f24e9980 SW |
1905 | } |
1906 | ceph_osdc_get_request(req); | |
1b83bef2 SW |
1907 | |
1908 | dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, | |
1909 | req, result); | |
1910 | ||
18741196 | 1911 | ceph_decode_need(&p, end, 4, bad_put); |
1b83bef2 | 1912 | numops = ceph_decode_32(&p); |
3f1af42a | 1913 | if (numops > CEPH_OSD_MAX_OPS) |
1b83bef2 SW |
1914 | goto bad_put; |
1915 | if (numops != req->r_num_ops) | |
1916 | goto bad_put; | |
1917 | payload_len = 0; | |
18741196 | 1918 | ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); |
1b83bef2 SW |
1919 | for (i = 0; i < numops; i++) { |
1920 | struct ceph_osd_op *op = p; | |
1921 | int len; | |
1922 | ||
1923 | len = le32_to_cpu(op->payload_len); | |
7665d85b | 1924 | req->r_ops[i].outdata_len = len; |
1b83bef2 SW |
1925 | dout(" op %d has %d bytes\n", i, len); |
1926 | payload_len += len; | |
1927 | p += sizeof(*op); | |
1928 | } | |
9fc6e064 AE |
1929 | bytes = le32_to_cpu(msg->hdr.data_len); |
1930 | if (payload_len != bytes) { | |
b9a67899 JP |
1931 | pr_warn("sum of op payload lens %d != data_len %d\n", |
1932 | payload_len, bytes); | |
1b83bef2 SW |
1933 | goto bad_put; |
1934 | } | |
1935 | ||
18741196 | 1936 | ceph_decode_need(&p, end, 4 + numops * 4, bad_put); |
1b83bef2 SW |
1937 | retry_attempt = ceph_decode_32(&p); |
1938 | for (i = 0; i < numops; i++) | |
7665d85b | 1939 | req->r_ops[i].rval = ceph_decode_32(&p); |
f24e9980 | 1940 | |
205ee118 ID |
1941 | if (le16_to_cpu(msg->hdr.version) >= 6) { |
1942 | p += 8 + 4; /* skip replay_version */ | |
1943 | p += 8; /* skip user_version */ | |
eb845ff1 | 1944 | |
b0b31a8f ID |
1945 | if (le16_to_cpu(msg->hdr.version) >= 7) |
1946 | ceph_decode_8_safe(&p, end, decode_redir, bad_put); | |
1947 | else | |
1948 | decode_redir = 1; | |
1949 | } else { | |
1950 | decode_redir = 0; | |
1951 | } | |
1952 | ||
1953 | if (decode_redir) { | |
205ee118 ID |
1954 | err = ceph_redirect_decode(&p, end, &redir); |
1955 | if (err) | |
1956 | goto bad_put; | |
1957 | } else { | |
1958 | redir.oloc.pool = -1; | |
1959 | } | |
f24e9980 | 1960 | |
63244fa1 | 1961 | if (!ceph_oloc_empty(&redir.oloc)) { |
205ee118 ID |
1962 | dout("redirect pool %lld\n", redir.oloc.pool); |
1963 | ||
1964 | __unregister_request(osdc, req); | |
205ee118 | 1965 | |
63244fa1 | 1966 | ceph_oloc_copy(&req->r_target_oloc, &redir.oloc); |
205ee118 ID |
1967 | |
1968 | /* | |
1969 | * Start redirect requests with nofail=true. If | |
1970 | * mapping fails, request will end up on the notarget | |
1971 | * list, waiting for the new osdmap (which can take | |
1972 | * a while), even though the original request mapped | |
1973 | * successfully. In the future we might want to follow | |
1974 | * original request's nofail setting here. | |
1975 | */ | |
ff513ace | 1976 | err = __ceph_osdc_start_request(osdc, req, true); |
205ee118 ID |
1977 | BUG_ON(err); |
1978 | ||
ff513ace | 1979 | goto out_unlock; |
205ee118 ID |
1980 | } |
1981 | ||
1982 | already_completed = req->r_got_reply; | |
1983 | if (!req->r_got_reply) { | |
1b83bef2 | 1984 | req->r_result = result; |
f24e9980 SW |
1985 | dout("handle_reply result %d bytes %d\n", req->r_result, |
1986 | bytes); | |
1987 | if (req->r_result == 0) | |
1988 | req->r_result = bytes; | |
1989 | ||
1990 | /* in case this is a write and we need to replay, */ | |
1b83bef2 SW |
1991 | req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); |
1992 | req->r_reassert_version.version = cpu_to_le64(reassert_version); | |
f24e9980 SW |
1993 | |
1994 | req->r_got_reply = 1; | |
1995 | } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { | |
1996 | dout("handle_reply tid %llu dup ack\n", tid); | |
ff513ace | 1997 | goto out_unlock; |
f24e9980 SW |
1998 | } |
1999 | ||
2000 | dout("handle_reply tid %llu flags %d\n", tid, flags); | |
2001 | ||
a40c4f10 YS |
2002 | if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) |
2003 | __register_linger_request(osdc, req); | |
2004 | ||
f24e9980 | 2005 | /* either this is a read, or we got the safe response */ |
0ceed5db SW |
2006 | if (result < 0 || |
2007 | (flags & CEPH_OSD_FLAG_ONDISK) || | |
f24e9980 SW |
2008 | ((flags & CEPH_OSD_FLAG_WRITE) == 0)) |
2009 | __unregister_request(osdc, req); | |
2010 | ||
2011 | mutex_unlock(&osdc->request_mutex); | |
ff513ace | 2012 | up_read(&osdc->map_sem); |
f24e9980 | 2013 | |
eb845ff1 | 2014 | if (!already_completed) { |
61c5d6bf YZ |
2015 | if (req->r_unsafe_callback && |
2016 | result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) | |
2017 | req->r_unsafe_callback(req, true); | |
eb845ff1 YZ |
2018 | if (req->r_callback) |
2019 | req->r_callback(req, msg); | |
2020 | else | |
2021 | complete_all(&req->r_completion); | |
2022 | } | |
f24e9980 | 2023 | |
61c5d6bf YZ |
2024 | if (flags & CEPH_OSD_FLAG_ONDISK) { |
2025 | if (req->r_unsafe_callback && already_completed) | |
2026 | req->r_unsafe_callback(req, false); | |
25845472 | 2027 | complete_request(req); |
61c5d6bf | 2028 | } |
f24e9980 | 2029 | |
ff513ace | 2030 | out: |
a40c4f10 | 2031 | dout("req=%p req->r_linger=%d\n", req, req->r_linger); |
f24e9980 SW |
2032 | ceph_osdc_put_request(req); |
2033 | return; | |
ff513ace ID |
2034 | out_unlock: |
2035 | mutex_unlock(&osdc->request_mutex); | |
2036 | up_read(&osdc->map_sem); | |
2037 | goto out; | |
f24e9980 | 2038 | |
1b83bef2 | 2039 | bad_put: |
37c89bde LW |
2040 | req->r_result = -EIO; |
2041 | __unregister_request(osdc, req); | |
2042 | if (req->r_callback) | |
2043 | req->r_callback(req, msg); | |
2044 | else | |
2045 | complete_all(&req->r_completion); | |
2046 | complete_request(req); | |
1b83bef2 | 2047 | ceph_osdc_put_request(req); |
8058fd45 AE |
2048 | bad_mutex: |
2049 | mutex_unlock(&osdc->request_mutex); | |
ff513ace | 2050 | up_read(&osdc->map_sem); |
f24e9980 | 2051 | bad: |
1b83bef2 SW |
2052 | pr_err("corrupt osd_op_reply got %d %d\n", |
2053 | (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); | |
9ec7cab1 | 2054 | ceph_msg_dump(msg); |
f24e9980 SW |
2055 | } |
2056 | ||
6f6c7006 | 2057 | static void reset_changed_osds(struct ceph_osd_client *osdc) |
f24e9980 | 2058 | { |
f24e9980 | 2059 | struct rb_node *p, *n; |
f24e9980 | 2060 | |
7eb71e03 | 2061 | dout("%s %p\n", __func__, osdc); |
6f6c7006 SW |
2062 | for (p = rb_first(&osdc->osds); p; p = n) { |
2063 | struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); | |
f24e9980 | 2064 | |
6f6c7006 SW |
2065 | n = rb_next(p); |
2066 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
2067 | memcmp(&osd->o_con.peer_addr, | |
2068 | ceph_osd_addr(osdc->osdmap, | |
2069 | osd->o_osd), | |
2070 | sizeof(struct ceph_entity_addr)) != 0) | |
2071 | __reset_osd(osdc, osd); | |
f24e9980 | 2072 | } |
422d2cb8 YS |
2073 | } |
2074 | ||
2075 | /* | |
6f6c7006 SW |
2076 | * Requeue requests whose mapping to an OSD has changed. If requests map to |
2077 | * no osd, request a new map. | |
422d2cb8 | 2078 | * |
e6d50f67 | 2079 | * Caller should hold map_sem for read. |
422d2cb8 | 2080 | */ |
9a1ea2db JD |
2081 | static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, |
2082 | bool force_resend_writes) | |
422d2cb8 | 2083 | { |
a40c4f10 | 2084 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
2085 | struct rb_node *p; |
2086 | int needmap = 0; | |
2087 | int err; | |
9a1ea2db | 2088 | bool force_resend_req; |
422d2cb8 | 2089 | |
9a1ea2db JD |
2090 | dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", |
2091 | force_resend_writes ? " (force resend writes)" : ""); | |
422d2cb8 | 2092 | mutex_lock(&osdc->request_mutex); |
6194ea89 | 2093 | for (p = rb_first(&osdc->requests); p; ) { |
6f6c7006 | 2094 | req = rb_entry(p, struct ceph_osd_request, r_node); |
6194ea89 | 2095 | p = rb_next(p); |
ab60b16d AE |
2096 | |
2097 | /* | |
2098 | * For linger requests that have not yet been | |
2099 | * registered, move them to the linger list; they'll | |
2100 | * be sent to the osd in the loop below. Unregister | |
2101 | * the request before re-registering it as a linger | |
2102 | * request to ensure the __map_request() below | |
2103 | * will decide it needs to be sent. | |
2104 | */ | |
2105 | if (req->r_linger && list_empty(&req->r_linger_item)) { | |
2106 | dout("%p tid %llu restart on osd%d\n", | |
2107 | req, req->r_tid, | |
2108 | req->r_osd ? req->r_osd->o_osd : -1); | |
96e4dac6 | 2109 | ceph_osdc_get_request(req); |
ab60b16d AE |
2110 | __unregister_request(osdc, req); |
2111 | __register_linger_request(osdc, req); | |
96e4dac6 | 2112 | ceph_osdc_put_request(req); |
ab60b16d AE |
2113 | continue; |
2114 | } | |
2115 | ||
9a1ea2db JD |
2116 | force_resend_req = force_resend || |
2117 | (force_resend_writes && | |
2118 | req->r_flags & CEPH_OSD_FLAG_WRITE); | |
2119 | err = __map_request(osdc, req, force_resend_req); | |
6f6c7006 SW |
2120 | if (err < 0) |
2121 | continue; /* error */ | |
2122 | if (req->r_osd == NULL) { | |
2123 | dout("%p tid %llu maps to no osd\n", req, req->r_tid); | |
2124 | needmap++; /* request a newer map */ | |
2125 | } else if (err > 0) { | |
6194ea89 SW |
2126 | if (!req->r_linger) { |
2127 | dout("%p tid %llu requeued on osd%d\n", req, | |
2128 | req->r_tid, | |
2129 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 2130 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
6194ea89 SW |
2131 | } |
2132 | } | |
a40c4f10 YS |
2133 | } |
2134 | ||
2135 | list_for_each_entry_safe(req, nreq, &osdc->req_linger, | |
2136 | r_linger_item) { | |
2137 | dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); | |
2138 | ||
9a1ea2db JD |
2139 | err = __map_request(osdc, req, |
2140 | force_resend || force_resend_writes); | |
ab60b16d | 2141 | dout("__map_request returned %d\n", err); |
a40c4f10 YS |
2142 | if (err < 0) |
2143 | continue; /* hrm! */ | |
b0494532 ID |
2144 | if (req->r_osd == NULL || err > 0) { |
2145 | if (req->r_osd == NULL) { | |
2146 | dout("lingering %p tid %llu maps to no osd\n", | |
2147 | req, req->r_tid); | |
2148 | /* | |
2149 | * A homeless lingering request makes | |
2150 | * no sense, as it's job is to keep | |
2151 | * a particular OSD connection open. | |
2152 | * Request a newer map and kick the | |
2153 | * request, knowing that it won't be | |
2154 | * resent until we actually get a map | |
2155 | * that can tell us where to send it. | |
2156 | */ | |
2157 | needmap++; | |
2158 | } | |
a40c4f10 | 2159 | |
b0494532 ID |
2160 | dout("kicking lingering %p tid %llu osd%d\n", req, |
2161 | req->r_tid, req->r_osd ? req->r_osd->o_osd : -1); | |
2162 | __register_request(osdc, req); | |
2163 | __unregister_linger_request(osdc, req); | |
2164 | } | |
6f6c7006 | 2165 | } |
14d2f38d | 2166 | reset_changed_osds(osdc); |
f24e9980 SW |
2167 | mutex_unlock(&osdc->request_mutex); |
2168 | ||
2169 | if (needmap) { | |
2170 | dout("%d requests for down osds, need new map\n", needmap); | |
2171 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
2172 | } | |
422d2cb8 | 2173 | } |
6f6c7006 SW |
2174 | |
2175 | ||
f24e9980 SW |
2176 | /* |
2177 | * Process updated osd map. | |
2178 | * | |
2179 | * The message contains any number of incremental and full maps, normally | |
2180 | * indicating some sort of topology change in the cluster. Kick requests | |
2181 | * off to different OSDs as needed. | |
2182 | */ | |
2183 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
2184 | { | |
2185 | void *p, *end, *next; | |
2186 | u32 nr_maps, maplen; | |
2187 | u32 epoch; | |
2188 | struct ceph_osdmap *newmap = NULL, *oldmap; | |
2189 | int err; | |
2190 | struct ceph_fsid fsid; | |
9a1ea2db | 2191 | bool was_full; |
f24e9980 SW |
2192 | |
2193 | dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); | |
2194 | p = msg->front.iov_base; | |
2195 | end = p + msg->front.iov_len; | |
2196 | ||
2197 | /* verify fsid */ | |
2198 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
2199 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d SW |
2200 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
2201 | return; | |
f24e9980 SW |
2202 | |
2203 | down_write(&osdc->map_sem); | |
2204 | ||
9a1ea2db JD |
2205 | was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); |
2206 | ||
f24e9980 SW |
2207 | /* incremental maps */ |
2208 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
2209 | dout(" %d inc maps\n", nr_maps); | |
2210 | while (nr_maps > 0) { | |
2211 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
2212 | epoch = ceph_decode_32(&p); |
2213 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
2214 | ceph_decode_need(&p, end, maplen, bad); |
2215 | next = p + maplen; | |
2216 | if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { | |
2217 | dout("applying incremental map %u len %d\n", | |
2218 | epoch, maplen); | |
2219 | newmap = osdmap_apply_incremental(&p, next, | |
0c0a8de1 | 2220 | osdc->osdmap); |
f24e9980 SW |
2221 | if (IS_ERR(newmap)) { |
2222 | err = PTR_ERR(newmap); | |
2223 | goto bad; | |
2224 | } | |
30dc6381 | 2225 | BUG_ON(!newmap); |
f24e9980 SW |
2226 | if (newmap != osdc->osdmap) { |
2227 | ceph_osdmap_destroy(osdc->osdmap); | |
2228 | osdc->osdmap = newmap; | |
2229 | } | |
9a1ea2db JD |
2230 | was_full = was_full || |
2231 | ceph_osdmap_flag(osdc->osdmap, | |
2232 | CEPH_OSDMAP_FULL); | |
2233 | kick_requests(osdc, 0, was_full); | |
f24e9980 SW |
2234 | } else { |
2235 | dout("ignoring incremental map %u len %d\n", | |
2236 | epoch, maplen); | |
2237 | } | |
2238 | p = next; | |
2239 | nr_maps--; | |
2240 | } | |
2241 | if (newmap) | |
2242 | goto done; | |
2243 | ||
2244 | /* full maps */ | |
2245 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
2246 | dout(" %d full maps\n", nr_maps); | |
2247 | while (nr_maps) { | |
2248 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
2249 | epoch = ceph_decode_32(&p); |
2250 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
2251 | ceph_decode_need(&p, end, maplen, bad); |
2252 | if (nr_maps > 1) { | |
2253 | dout("skipping non-latest full map %u len %d\n", | |
2254 | epoch, maplen); | |
2255 | } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { | |
2256 | dout("skipping full map %u len %d, " | |
2257 | "older than our %u\n", epoch, maplen, | |
2258 | osdc->osdmap->epoch); | |
2259 | } else { | |
38d6453c SW |
2260 | int skipped_map = 0; |
2261 | ||
f24e9980 | 2262 | dout("taking full map %u len %d\n", epoch, maplen); |
a2505d63 | 2263 | newmap = ceph_osdmap_decode(&p, p+maplen); |
f24e9980 SW |
2264 | if (IS_ERR(newmap)) { |
2265 | err = PTR_ERR(newmap); | |
2266 | goto bad; | |
2267 | } | |
30dc6381 | 2268 | BUG_ON(!newmap); |
f24e9980 SW |
2269 | oldmap = osdc->osdmap; |
2270 | osdc->osdmap = newmap; | |
38d6453c SW |
2271 | if (oldmap) { |
2272 | if (oldmap->epoch + 1 < newmap->epoch) | |
2273 | skipped_map = 1; | |
f24e9980 | 2274 | ceph_osdmap_destroy(oldmap); |
38d6453c | 2275 | } |
9a1ea2db JD |
2276 | was_full = was_full || |
2277 | ceph_osdmap_flag(osdc->osdmap, | |
2278 | CEPH_OSDMAP_FULL); | |
2279 | kick_requests(osdc, skipped_map, was_full); | |
f24e9980 SW |
2280 | } |
2281 | p += maplen; | |
2282 | nr_maps--; | |
2283 | } | |
2284 | ||
b72e19b9 DC |
2285 | if (!osdc->osdmap) |
2286 | goto bad; | |
f24e9980 SW |
2287 | done: |
2288 | downgrade_write(&osdc->map_sem); | |
82dcabad ID |
2289 | ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, |
2290 | osdc->osdmap->epoch); | |
cd634fb6 SW |
2291 | |
2292 | /* | |
2293 | * subscribe to subsequent osdmap updates if full to ensure | |
2294 | * we find out when we are no longer full and stop returning | |
2295 | * ENOSPC. | |
2296 | */ | |
d29adb34 JD |
2297 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || |
2298 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || | |
2299 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) | |
cd634fb6 SW |
2300 | ceph_monc_request_next_osdmap(&osdc->client->monc); |
2301 | ||
f9d25199 AE |
2302 | mutex_lock(&osdc->request_mutex); |
2303 | __send_queued(osdc); | |
2304 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 2305 | up_read(&osdc->map_sem); |
03066f23 | 2306 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
2307 | return; |
2308 | ||
2309 | bad: | |
2310 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 2311 | ceph_msg_dump(msg); |
f24e9980 | 2312 | up_write(&osdc->map_sem); |
f24e9980 SW |
2313 | } |
2314 | ||
a40c4f10 YS |
2315 | /* |
2316 | * watch/notify callback event infrastructure | |
2317 | * | |
2318 | * These callbacks are used both for watch and notify operations. | |
2319 | */ | |
2320 | static void __release_event(struct kref *kref) | |
2321 | { | |
2322 | struct ceph_osd_event *event = | |
2323 | container_of(kref, struct ceph_osd_event, kref); | |
2324 | ||
2325 | dout("__release_event %p\n", event); | |
2326 | kfree(event); | |
2327 | } | |
2328 | ||
2329 | static void get_event(struct ceph_osd_event *event) | |
2330 | { | |
2331 | kref_get(&event->kref); | |
2332 | } | |
2333 | ||
2334 | void ceph_osdc_put_event(struct ceph_osd_event *event) | |
2335 | { | |
2336 | kref_put(&event->kref, __release_event); | |
2337 | } | |
2338 | EXPORT_SYMBOL(ceph_osdc_put_event); | |
2339 | ||
2340 | static void __insert_event(struct ceph_osd_client *osdc, | |
2341 | struct ceph_osd_event *new) | |
2342 | { | |
2343 | struct rb_node **p = &osdc->event_tree.rb_node; | |
2344 | struct rb_node *parent = NULL; | |
2345 | struct ceph_osd_event *event = NULL; | |
2346 | ||
2347 | while (*p) { | |
2348 | parent = *p; | |
2349 | event = rb_entry(parent, struct ceph_osd_event, node); | |
2350 | if (new->cookie < event->cookie) | |
2351 | p = &(*p)->rb_left; | |
2352 | else if (new->cookie > event->cookie) | |
2353 | p = &(*p)->rb_right; | |
2354 | else | |
2355 | BUG(); | |
2356 | } | |
2357 | ||
2358 | rb_link_node(&new->node, parent, p); | |
2359 | rb_insert_color(&new->node, &osdc->event_tree); | |
2360 | } | |
2361 | ||
2362 | static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, | |
2363 | u64 cookie) | |
2364 | { | |
2365 | struct rb_node **p = &osdc->event_tree.rb_node; | |
2366 | struct rb_node *parent = NULL; | |
2367 | struct ceph_osd_event *event = NULL; | |
2368 | ||
2369 | while (*p) { | |
2370 | parent = *p; | |
2371 | event = rb_entry(parent, struct ceph_osd_event, node); | |
2372 | if (cookie < event->cookie) | |
2373 | p = &(*p)->rb_left; | |
2374 | else if (cookie > event->cookie) | |
2375 | p = &(*p)->rb_right; | |
2376 | else | |
2377 | return event; | |
2378 | } | |
2379 | return NULL; | |
2380 | } | |
2381 | ||
2382 | static void __remove_event(struct ceph_osd_event *event) | |
2383 | { | |
2384 | struct ceph_osd_client *osdc = event->osdc; | |
2385 | ||
2386 | if (!RB_EMPTY_NODE(&event->node)) { | |
2387 | dout("__remove_event removed %p\n", event); | |
2388 | rb_erase(&event->node, &osdc->event_tree); | |
2389 | ceph_osdc_put_event(event); | |
2390 | } else { | |
2391 | dout("__remove_event didn't remove %p\n", event); | |
2392 | } | |
2393 | } | |
2394 | ||
2395 | int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
2396 | void (*event_cb)(u64, u64, u8, void *), | |
3c663bbd | 2397 | void *data, struct ceph_osd_event **pevent) |
a40c4f10 YS |
2398 | { |
2399 | struct ceph_osd_event *event; | |
2400 | ||
2401 | event = kmalloc(sizeof(*event), GFP_NOIO); | |
2402 | if (!event) | |
2403 | return -ENOMEM; | |
2404 | ||
2405 | dout("create_event %p\n", event); | |
2406 | event->cb = event_cb; | |
3c663bbd | 2407 | event->one_shot = 0; |
a40c4f10 YS |
2408 | event->data = data; |
2409 | event->osdc = osdc; | |
2410 | INIT_LIST_HEAD(&event->osd_node); | |
3ee5234d | 2411 | RB_CLEAR_NODE(&event->node); |
a40c4f10 YS |
2412 | kref_init(&event->kref); /* one ref for us */ |
2413 | kref_get(&event->kref); /* one ref for the caller */ | |
a40c4f10 YS |
2414 | |
2415 | spin_lock(&osdc->event_lock); | |
2416 | event->cookie = ++osdc->event_count; | |
2417 | __insert_event(osdc, event); | |
2418 | spin_unlock(&osdc->event_lock); | |
2419 | ||
2420 | *pevent = event; | |
2421 | return 0; | |
2422 | } | |
2423 | EXPORT_SYMBOL(ceph_osdc_create_event); | |
2424 | ||
2425 | void ceph_osdc_cancel_event(struct ceph_osd_event *event) | |
2426 | { | |
2427 | struct ceph_osd_client *osdc = event->osdc; | |
2428 | ||
2429 | dout("cancel_event %p\n", event); | |
2430 | spin_lock(&osdc->event_lock); | |
2431 | __remove_event(event); | |
2432 | spin_unlock(&osdc->event_lock); | |
2433 | ceph_osdc_put_event(event); /* caller's */ | |
2434 | } | |
2435 | EXPORT_SYMBOL(ceph_osdc_cancel_event); | |
2436 | ||
2437 | ||
2438 | static void do_event_work(struct work_struct *work) | |
2439 | { | |
2440 | struct ceph_osd_event_work *event_work = | |
2441 | container_of(work, struct ceph_osd_event_work, work); | |
2442 | struct ceph_osd_event *event = event_work->event; | |
2443 | u64 ver = event_work->ver; | |
2444 | u64 notify_id = event_work->notify_id; | |
2445 | u8 opcode = event_work->opcode; | |
2446 | ||
2447 | dout("do_event_work completing %p\n", event); | |
2448 | event->cb(ver, notify_id, opcode, event->data); | |
a40c4f10 YS |
2449 | dout("do_event_work completed %p\n", event); |
2450 | ceph_osdc_put_event(event); | |
2451 | kfree(event_work); | |
2452 | } | |
2453 | ||
2454 | ||
2455 | /* | |
2456 | * Process osd watch notifications | |
2457 | */ | |
3c663bbd AE |
2458 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
2459 | struct ceph_msg *msg) | |
a40c4f10 YS |
2460 | { |
2461 | void *p, *end; | |
2462 | u8 proto_ver; | |
2463 | u64 cookie, ver, notify_id; | |
2464 | u8 opcode; | |
2465 | struct ceph_osd_event *event; | |
2466 | struct ceph_osd_event_work *event_work; | |
2467 | ||
2468 | p = msg->front.iov_base; | |
2469 | end = p + msg->front.iov_len; | |
2470 | ||
2471 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
2472 | ceph_decode_8_safe(&p, end, opcode, bad); | |
2473 | ceph_decode_64_safe(&p, end, cookie, bad); | |
2474 | ceph_decode_64_safe(&p, end, ver, bad); | |
2475 | ceph_decode_64_safe(&p, end, notify_id, bad); | |
2476 | ||
2477 | spin_lock(&osdc->event_lock); | |
2478 | event = __find_event(osdc, cookie); | |
2479 | if (event) { | |
3c663bbd | 2480 | BUG_ON(event->one_shot); |
a40c4f10 | 2481 | get_event(event); |
a40c4f10 YS |
2482 | } |
2483 | spin_unlock(&osdc->event_lock); | |
2484 | dout("handle_watch_notify cookie %lld ver %lld event %p\n", | |
2485 | cookie, ver, event); | |
2486 | if (event) { | |
2487 | event_work = kmalloc(sizeof(*event_work), GFP_NOIO); | |
a40c4f10 | 2488 | if (!event_work) { |
91883cd2 ID |
2489 | pr_err("couldn't allocate event_work\n"); |
2490 | ceph_osdc_put_event(event); | |
2491 | return; | |
a40c4f10 | 2492 | } |
6b0ae409 | 2493 | INIT_WORK(&event_work->work, do_event_work); |
a40c4f10 YS |
2494 | event_work->event = event; |
2495 | event_work->ver = ver; | |
2496 | event_work->notify_id = notify_id; | |
2497 | event_work->opcode = opcode; | |
a40c4f10 | 2498 | |
91883cd2 ID |
2499 | queue_work(osdc->notify_wq, &event_work->work); |
2500 | } | |
a40c4f10 | 2501 | |
a40c4f10 YS |
2502 | return; |
2503 | ||
2504 | bad: | |
2505 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
a40c4f10 YS |
2506 | } |
2507 | ||
e65550fd AE |
2508 | /* |
2509 | * build new request AND message | |
2510 | * | |
2511 | */ | |
2512 | void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, | |
2513 | struct ceph_snap_context *snapc, u64 snap_id, | |
2514 | struct timespec *mtime) | |
2515 | { | |
2516 | struct ceph_msg *msg = req->r_request; | |
2517 | void *p; | |
2518 | size_t msg_size; | |
2519 | int flags = req->r_flags; | |
2520 | u64 data_len; | |
2521 | unsigned int i; | |
2522 | ||
2523 | req->r_snapid = snap_id; | |
84127282 | 2524 | WARN_ON(snapc != req->r_snapc); |
e65550fd AE |
2525 | |
2526 | /* encode request */ | |
2527 | msg->hdr.version = cpu_to_le16(4); | |
2528 | ||
2529 | p = msg->front.iov_base; | |
2530 | ceph_encode_32(&p, 1); /* client_inc is always 1 */ | |
2531 | req->r_request_osdmap_epoch = p; | |
2532 | p += 4; | |
2533 | req->r_request_flags = p; | |
2534 | p += 4; | |
2535 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) | |
2536 | ceph_encode_timespec(p, mtime); | |
2537 | p += sizeof(struct ceph_timespec); | |
2538 | req->r_request_reassert_version = p; | |
2539 | p += sizeof(struct ceph_eversion); /* will get filled in */ | |
2540 | ||
2541 | /* oloc */ | |
2542 | ceph_encode_8(&p, 4); | |
2543 | ceph_encode_8(&p, 4); | |
2544 | ceph_encode_32(&p, 8 + 4 + 4); | |
2545 | req->r_request_pool = p; | |
2546 | p += 8; | |
2547 | ceph_encode_32(&p, -1); /* preferred */ | |
2548 | ceph_encode_32(&p, 0); /* key len */ | |
2549 | ||
2550 | ceph_encode_8(&p, 1); | |
2551 | req->r_request_pgid = p; | |
2552 | p += 8 + 4; | |
2553 | ceph_encode_32(&p, -1); /* preferred */ | |
2554 | ||
2555 | /* oid */ | |
3c972c95 ID |
2556 | ceph_encode_32(&p, req->r_base_oid.name_len); |
2557 | memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len); | |
d30291b9 | 2558 | dout("oid %*pE len %d\n", req->r_base_oid.name_len, |
3c972c95 ID |
2559 | req->r_base_oid.name, req->r_base_oid.name_len); |
2560 | p += req->r_base_oid.name_len; | |
e65550fd AE |
2561 | |
2562 | /* ops--can imply data */ | |
2563 | ceph_encode_16(&p, (u16)req->r_num_ops); | |
2564 | data_len = 0; | |
2565 | for (i = 0; i < req->r_num_ops; i++) { | |
2566 | data_len += osd_req_encode_op(req, p, i); | |
2567 | p += sizeof(struct ceph_osd_op); | |
2568 | } | |
2569 | ||
2570 | /* snaps */ | |
2571 | ceph_encode_64(&p, req->r_snapid); | |
2572 | ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); | |
2573 | ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); | |
2574 | if (req->r_snapc) { | |
84127282 | 2575 | for (i = 0; i < req->r_snapc->num_snaps; i++) { |
e65550fd AE |
2576 | ceph_encode_64(&p, req->r_snapc->snaps[i]); |
2577 | } | |
2578 | } | |
2579 | ||
2580 | req->r_request_attempts = p; | |
2581 | p += 4; | |
2582 | ||
2583 | /* data */ | |
2584 | if (flags & CEPH_OSD_FLAG_WRITE) { | |
2585 | u16 data_off; | |
2586 | ||
2587 | /* | |
2588 | * The header "data_off" is a hint to the receiver | |
2589 | * allowing it to align received data into its | |
2590 | * buffers such that there's no need to re-copy | |
2591 | * it before writing it to disk (direct I/O). | |
2592 | */ | |
2593 | data_off = (u16) (off & 0xffff); | |
2594 | req->r_request->hdr.data_off = cpu_to_le16(data_off); | |
2595 | } | |
2596 | req->r_request->hdr.data_len = cpu_to_le32(data_len); | |
2597 | ||
2598 | BUG_ON(p > msg->front.iov_base + msg->front.iov_len); | |
2599 | msg_size = p - msg->front.iov_base; | |
2600 | msg->front.iov_len = msg_size; | |
2601 | msg->hdr.front_len = cpu_to_le32(msg_size); | |
2602 | ||
2603 | dout("build_request msg_size was %d\n", (int)msg_size); | |
2604 | } | |
2605 | EXPORT_SYMBOL(ceph_osdc_build_request); | |
2606 | ||
70636773 AE |
2607 | /* |
2608 | * Register request, send initial attempt. | |
2609 | */ | |
2610 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
2611 | struct ceph_osd_request *req, | |
2612 | bool nofail) | |
2613 | { | |
0bbfdfe8 | 2614 | int rc; |
70636773 | 2615 | |
f24e9980 SW |
2616 | down_read(&osdc->map_sem); |
2617 | mutex_lock(&osdc->request_mutex); | |
0bbfdfe8 ID |
2618 | |
2619 | rc = __ceph_osdc_start_request(osdc, req, nofail); | |
2620 | ||
f24e9980 SW |
2621 | mutex_unlock(&osdc->request_mutex); |
2622 | up_read(&osdc->map_sem); | |
0bbfdfe8 | 2623 | |
f24e9980 SW |
2624 | return rc; |
2625 | } | |
3d14c5d2 | 2626 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 | 2627 | |
c9f9b93d ID |
2628 | /* |
2629 | * Unregister a registered request. The request is not completed (i.e. | |
2630 | * no callbacks or wakeups) - higher layers are supposed to know what | |
2631 | * they are canceling. | |
2632 | */ | |
2633 | void ceph_osdc_cancel_request(struct ceph_osd_request *req) | |
2634 | { | |
2635 | struct ceph_osd_client *osdc = req->r_osdc; | |
2636 | ||
2637 | mutex_lock(&osdc->request_mutex); | |
2638 | if (req->r_linger) | |
2639 | __unregister_linger_request(osdc, req); | |
2640 | __unregister_request(osdc, req); | |
2641 | mutex_unlock(&osdc->request_mutex); | |
2642 | ||
2643 | dout("%s %p tid %llu canceled\n", __func__, req, req->r_tid); | |
2644 | } | |
2645 | EXPORT_SYMBOL(ceph_osdc_cancel_request); | |
2646 | ||
f24e9980 SW |
2647 | /* |
2648 | * wait for a request to complete | |
2649 | */ | |
2650 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
2651 | struct ceph_osd_request *req) | |
2652 | { | |
2653 | int rc; | |
2654 | ||
c9f9b93d ID |
2655 | dout("%s %p tid %llu\n", __func__, req, req->r_tid); |
2656 | ||
f24e9980 SW |
2657 | rc = wait_for_completion_interruptible(&req->r_completion); |
2658 | if (rc < 0) { | |
c9f9b93d ID |
2659 | dout("%s %p tid %llu interrupted\n", __func__, req, req->r_tid); |
2660 | ceph_osdc_cancel_request(req); | |
25845472 | 2661 | complete_request(req); |
f24e9980 SW |
2662 | return rc; |
2663 | } | |
2664 | ||
c9f9b93d ID |
2665 | dout("%s %p tid %llu result %d\n", __func__, req, req->r_tid, |
2666 | req->r_result); | |
f24e9980 SW |
2667 | return req->r_result; |
2668 | } | |
3d14c5d2 | 2669 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
2670 | |
2671 | /* | |
2672 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
2673 | */ | |
2674 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
2675 | { | |
2676 | struct ceph_osd_request *req; | |
2677 | u64 last_tid, next_tid = 0; | |
2678 | ||
2679 | mutex_lock(&osdc->request_mutex); | |
2680 | last_tid = osdc->last_tid; | |
2681 | while (1) { | |
2682 | req = __lookup_request_ge(osdc, next_tid); | |
2683 | if (!req) | |
2684 | break; | |
2685 | if (req->r_tid > last_tid) | |
2686 | break; | |
2687 | ||
2688 | next_tid = req->r_tid + 1; | |
2689 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) | |
2690 | continue; | |
2691 | ||
2692 | ceph_osdc_get_request(req); | |
2693 | mutex_unlock(&osdc->request_mutex); | |
2694 | dout("sync waiting on tid %llu (last is %llu)\n", | |
2695 | req->r_tid, last_tid); | |
2696 | wait_for_completion(&req->r_safe_completion); | |
2697 | mutex_lock(&osdc->request_mutex); | |
2698 | ceph_osdc_put_request(req); | |
2699 | } | |
2700 | mutex_unlock(&osdc->request_mutex); | |
2701 | dout("sync done (thru tid %llu)\n", last_tid); | |
2702 | } | |
3d14c5d2 | 2703 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 | 2704 | |
dd935f44 JD |
2705 | /* |
2706 | * Call all pending notify callbacks - for use after a watch is | |
2707 | * unregistered, to make sure no more callbacks for it will be invoked | |
2708 | */ | |
f6479449 | 2709 | void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) |
dd935f44 JD |
2710 | { |
2711 | flush_workqueue(osdc->notify_wq); | |
2712 | } | |
2713 | EXPORT_SYMBOL(ceph_osdc_flush_notifies); | |
2714 | ||
2715 | ||
f24e9980 SW |
2716 | /* |
2717 | * init, shutdown | |
2718 | */ | |
2719 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
2720 | { | |
2721 | int err; | |
2722 | ||
2723 | dout("init\n"); | |
2724 | osdc->client = client; | |
2725 | osdc->osdmap = NULL; | |
2726 | init_rwsem(&osdc->map_sem); | |
f24e9980 | 2727 | mutex_init(&osdc->request_mutex); |
f24e9980 SW |
2728 | osdc->last_tid = 0; |
2729 | osdc->osds = RB_ROOT; | |
f5a2041b | 2730 | INIT_LIST_HEAD(&osdc->osd_lru); |
f24e9980 | 2731 | osdc->requests = RB_ROOT; |
422d2cb8 | 2732 | INIT_LIST_HEAD(&osdc->req_lru); |
6f6c7006 SW |
2733 | INIT_LIST_HEAD(&osdc->req_unsent); |
2734 | INIT_LIST_HEAD(&osdc->req_notarget); | |
a40c4f10 | 2735 | INIT_LIST_HEAD(&osdc->req_linger); |
f24e9980 SW |
2736 | osdc->num_requests = 0; |
2737 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); | |
f5a2041b | 2738 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10 YS |
2739 | spin_lock_init(&osdc->event_lock); |
2740 | osdc->event_tree = RB_ROOT; | |
2741 | osdc->event_count = 0; | |
f5a2041b YS |
2742 | |
2743 | schedule_delayed_work(&osdc->osds_timeout_work, | |
a319bf56 | 2744 | round_jiffies_relative(osdc->client->options->osd_idle_ttl)); |
f24e9980 | 2745 | |
5f44f142 | 2746 | err = -ENOMEM; |
9e767adb ID |
2747 | osdc->req_mempool = mempool_create_slab_pool(10, |
2748 | ceph_osd_request_cache); | |
f24e9980 | 2749 | if (!osdc->req_mempool) |
5f44f142 | 2750 | goto out; |
f24e9980 | 2751 | |
d50b409f | 2752 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
711da55d | 2753 | PAGE_SIZE, 10, true, "osd_op"); |
f24e9980 | 2754 | if (err < 0) |
5f44f142 | 2755 | goto out_mempool; |
d50b409f | 2756 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
711da55d | 2757 | PAGE_SIZE, 10, true, "osd_op_reply"); |
c16e7869 SW |
2758 | if (err < 0) |
2759 | goto out_msgpool; | |
a40c4f10 | 2760 | |
dbcae088 | 2761 | err = -ENOMEM; |
a40c4f10 | 2762 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); |
dbcae088 | 2763 | if (!osdc->notify_wq) |
c172ec5c ID |
2764 | goto out_msgpool_reply; |
2765 | ||
f24e9980 | 2766 | return 0; |
5f44f142 | 2767 | |
c172ec5c ID |
2768 | out_msgpool_reply: |
2769 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); | |
c16e7869 SW |
2770 | out_msgpool: |
2771 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
2772 | out_mempool: |
2773 | mempool_destroy(osdc->req_mempool); | |
2774 | out: | |
2775 | return err; | |
f24e9980 SW |
2776 | } |
2777 | ||
2778 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
2779 | { | |
a40c4f10 YS |
2780 | flush_workqueue(osdc->notify_wq); |
2781 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 2782 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 2783 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
42a2c09f ID |
2784 | |
2785 | mutex_lock(&osdc->request_mutex); | |
2786 | while (!RB_EMPTY_ROOT(&osdc->osds)) { | |
2787 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
2788 | struct ceph_osd, o_node); | |
2789 | remove_osd(osdc, osd); | |
2790 | } | |
2791 | mutex_unlock(&osdc->request_mutex); | |
2792 | ||
f24e9980 SW |
2793 | if (osdc->osdmap) { |
2794 | ceph_osdmap_destroy(osdc->osdmap); | |
2795 | osdc->osdmap = NULL; | |
2796 | } | |
2797 | mempool_destroy(osdc->req_mempool); | |
2798 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 2799 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
2800 | } |
2801 | ||
2802 | /* | |
2803 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
2804 | * *plen. Return number of bytes read, or error. | |
2805 | */ | |
2806 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
2807 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
2808 | u64 off, u64 *plen, | |
2809 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 2810 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
2811 | { |
2812 | struct ceph_osd_request *req; | |
2813 | int rc = 0; | |
2814 | ||
2815 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
2816 | vino.snap, off, *plen); | |
715e4cd4 | 2817 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, |
f24e9980 | 2818 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, |
acead002 | 2819 | NULL, truncate_seq, truncate_size, |
153e5167 | 2820 | false); |
6816282d SW |
2821 | if (IS_ERR(req)) |
2822 | return PTR_ERR(req); | |
f24e9980 SW |
2823 | |
2824 | /* it may be a short read due to an object boundary */ | |
0fff87ec | 2825 | |
406e2c9f | 2826 | osd_req_op_extent_osd_data_pages(req, 0, |
a4ce40a9 | 2827 | pages, *plen, page_align, false, false); |
f24e9980 | 2828 | |
e0c59487 | 2829 | dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", |
43bfe5de | 2830 | off, *plen, *plen, page_align); |
f24e9980 | 2831 | |
79528734 | 2832 | ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); |
02ee07d3 | 2833 | |
f24e9980 SW |
2834 | rc = ceph_osdc_start_request(osdc, req, false); |
2835 | if (!rc) | |
2836 | rc = ceph_osdc_wait_request(osdc, req); | |
2837 | ||
2838 | ceph_osdc_put_request(req); | |
2839 | dout("readpages result %d\n", rc); | |
2840 | return rc; | |
2841 | } | |
3d14c5d2 | 2842 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
2843 | |
2844 | /* | |
2845 | * do a synchronous write on N pages | |
2846 | */ | |
2847 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
2848 | struct ceph_file_layout *layout, | |
2849 | struct ceph_snap_context *snapc, | |
2850 | u64 off, u64 len, | |
2851 | u32 truncate_seq, u64 truncate_size, | |
2852 | struct timespec *mtime, | |
24808826 | 2853 | struct page **pages, int num_pages) |
f24e9980 SW |
2854 | { |
2855 | struct ceph_osd_request *req; | |
2856 | int rc = 0; | |
b7495fc2 | 2857 | int page_align = off & ~PAGE_MASK; |
f24e9980 | 2858 | |
acead002 | 2859 | BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ |
715e4cd4 | 2860 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, |
f24e9980 | 2861 | CEPH_OSD_OP_WRITE, |
24808826 | 2862 | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, |
acead002 | 2863 | snapc, truncate_seq, truncate_size, |
153e5167 | 2864 | true); |
6816282d SW |
2865 | if (IS_ERR(req)) |
2866 | return PTR_ERR(req); | |
f24e9980 SW |
2867 | |
2868 | /* it may be a short write due to an object boundary */ | |
406e2c9f | 2869 | osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, |
43bfe5de AE |
2870 | false, false); |
2871 | dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); | |
f24e9980 | 2872 | |
79528734 | 2873 | ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); |
02ee07d3 | 2874 | |
87f979d3 | 2875 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
2876 | if (!rc) |
2877 | rc = ceph_osdc_wait_request(osdc, req); | |
2878 | ||
2879 | ceph_osdc_put_request(req); | |
2880 | if (rc == 0) | |
2881 | rc = len; | |
2882 | dout("writepages result %d\n", rc); | |
2883 | return rc; | |
2884 | } | |
3d14c5d2 | 2885 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 | 2886 | |
5522ae0b AE |
2887 | int ceph_osdc_setup(void) |
2888 | { | |
3f1af42a ID |
2889 | size_t size = sizeof(struct ceph_osd_request) + |
2890 | CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); | |
2891 | ||
5522ae0b | 2892 | BUG_ON(ceph_osd_request_cache); |
3f1af42a ID |
2893 | ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, |
2894 | 0, 0, NULL); | |
5522ae0b AE |
2895 | |
2896 | return ceph_osd_request_cache ? 0 : -ENOMEM; | |
2897 | } | |
2898 | EXPORT_SYMBOL(ceph_osdc_setup); | |
2899 | ||
2900 | void ceph_osdc_cleanup(void) | |
2901 | { | |
2902 | BUG_ON(!ceph_osd_request_cache); | |
2903 | kmem_cache_destroy(ceph_osd_request_cache); | |
2904 | ceph_osd_request_cache = NULL; | |
2905 | } | |
2906 | EXPORT_SYMBOL(ceph_osdc_cleanup); | |
2907 | ||
f24e9980 SW |
2908 | /* |
2909 | * handle incoming message | |
2910 | */ | |
2911 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
2912 | { | |
2913 | struct ceph_osd *osd = con->private; | |
32c895e7 | 2914 | struct ceph_osd_client *osdc; |
f24e9980 SW |
2915 | int type = le16_to_cpu(msg->hdr.type); |
2916 | ||
2917 | if (!osd) | |
4a32f93d | 2918 | goto out; |
32c895e7 | 2919 | osdc = osd->o_osdc; |
f24e9980 SW |
2920 | |
2921 | switch (type) { | |
2922 | case CEPH_MSG_OSD_MAP: | |
2923 | ceph_osdc_handle_map(osdc, msg); | |
2924 | break; | |
2925 | case CEPH_MSG_OSD_OPREPLY: | |
70cf052d | 2926 | handle_reply(osdc, msg); |
f24e9980 | 2927 | break; |
a40c4f10 YS |
2928 | case CEPH_MSG_WATCH_NOTIFY: |
2929 | handle_watch_notify(osdc, msg); | |
2930 | break; | |
f24e9980 SW |
2931 | |
2932 | default: | |
2933 | pr_err("received unknown message type %d %s\n", type, | |
2934 | ceph_msg_type_name(type)); | |
2935 | } | |
4a32f93d | 2936 | out: |
f24e9980 SW |
2937 | ceph_msg_put(msg); |
2938 | } | |
2939 | ||
5b3a4db3 | 2940 | /* |
d15f9d69 ID |
2941 | * Lookup and return message for incoming reply. Don't try to do |
2942 | * anything about a larger than preallocated data portion of the | |
2943 | * message at the moment - for now, just skip the message. | |
5b3a4db3 SW |
2944 | */ |
2945 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
2946 | struct ceph_msg_header *hdr, |
2947 | int *skip) | |
f24e9980 SW |
2948 | { |
2949 | struct ceph_osd *osd = con->private; | |
2950 | struct ceph_osd_client *osdc = osd->o_osdc; | |
2450418c | 2951 | struct ceph_msg *m; |
0547a9b3 | 2952 | struct ceph_osd_request *req; |
3f0a4ac5 | 2953 | int front_len = le32_to_cpu(hdr->front_len); |
5b3a4db3 | 2954 | int data_len = le32_to_cpu(hdr->data_len); |
0547a9b3 | 2955 | u64 tid; |
f24e9980 | 2956 | |
0547a9b3 YS |
2957 | tid = le64_to_cpu(hdr->tid); |
2958 | mutex_lock(&osdc->request_mutex); | |
fcd00b68 | 2959 | req = lookup_request(&osdc->requests, tid); |
0547a9b3 | 2960 | if (!req) { |
cd8140c6 ID |
2961 | dout("%s osd%d tid %llu unknown, skipping\n", __func__, |
2962 | osd->o_osd, tid); | |
0547a9b3 | 2963 | m = NULL; |
d15f9d69 | 2964 | *skip = 1; |
0547a9b3 YS |
2965 | goto out; |
2966 | } | |
c16e7869 | 2967 | |
ace6d3a9 | 2968 | ceph_msg_revoke_incoming(req->r_reply); |
0547a9b3 | 2969 | |
f2be82b0 | 2970 | if (front_len > req->r_reply->front_alloc_len) { |
d15f9d69 ID |
2971 | pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", |
2972 | __func__, osd->o_osd, req->r_tid, front_len, | |
2973 | req->r_reply->front_alloc_len); | |
3f0a4ac5 ID |
2974 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, |
2975 | false); | |
a79832f2 | 2976 | if (!m) |
c16e7869 SW |
2977 | goto out; |
2978 | ceph_msg_put(req->r_reply); | |
2979 | req->r_reply = m; | |
2980 | } | |
0fff87ec | 2981 | |
d15f9d69 ID |
2982 | if (data_len > req->r_reply->data_length) { |
2983 | pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", | |
2984 | __func__, osd->o_osd, req->r_tid, data_len, | |
2985 | req->r_reply->data_length); | |
2986 | m = NULL; | |
2987 | *skip = 1; | |
2988 | goto out; | |
0547a9b3 | 2989 | } |
d15f9d69 ID |
2990 | |
2991 | m = ceph_msg_get(req->r_reply); | |
c16e7869 | 2992 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 YS |
2993 | |
2994 | out: | |
2995 | mutex_unlock(&osdc->request_mutex); | |
2450418c | 2996 | return m; |
5b3a4db3 SW |
2997 | } |
2998 | ||
2999 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, | |
3000 | struct ceph_msg_header *hdr, | |
3001 | int *skip) | |
3002 | { | |
3003 | struct ceph_osd *osd = con->private; | |
3004 | int type = le16_to_cpu(hdr->type); | |
3005 | int front = le32_to_cpu(hdr->front_len); | |
3006 | ||
1c20f2d2 | 3007 | *skip = 0; |
5b3a4db3 SW |
3008 | switch (type) { |
3009 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 3010 | case CEPH_MSG_WATCH_NOTIFY: |
b61c2763 | 3011 | return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3 SW |
3012 | case CEPH_MSG_OSD_OPREPLY: |
3013 | return get_reply(con, hdr, skip); | |
3014 | default: | |
3015 | pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, | |
3016 | osd->o_osd); | |
3017 | *skip = 1; | |
3018 | return NULL; | |
3019 | } | |
f24e9980 SW |
3020 | } |
3021 | ||
3022 | /* | |
3023 | * Wrappers to refcount containing ceph_osd struct | |
3024 | */ | |
3025 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
3026 | { | |
3027 | struct ceph_osd *osd = con->private; | |
3028 | if (get_osd(osd)) | |
3029 | return con; | |
3030 | return NULL; | |
3031 | } | |
3032 | ||
3033 | static void put_osd_con(struct ceph_connection *con) | |
3034 | { | |
3035 | struct ceph_osd *osd = con->private; | |
3036 | put_osd(osd); | |
3037 | } | |
3038 | ||
4e7a5dcd SW |
3039 | /* |
3040 | * authentication | |
3041 | */ | |
a3530df3 AE |
3042 | /* |
3043 | * Note: returned pointer is the address of a structure that's | |
3044 | * managed separately. Caller must *not* attempt to free it. | |
3045 | */ | |
3046 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 3047 | int *proto, int force_new) |
4e7a5dcd SW |
3048 | { |
3049 | struct ceph_osd *o = con->private; | |
3050 | struct ceph_osd_client *osdc = o->o_osdc; | |
3051 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 3052 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 3053 | |
74f1869f | 3054 | if (force_new && auth->authorizer) { |
6c1ea260 | 3055 | ceph_auth_destroy_authorizer(auth->authorizer); |
74f1869f AE |
3056 | auth->authorizer = NULL; |
3057 | } | |
27859f97 SW |
3058 | if (!auth->authorizer) { |
3059 | int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
3060 | auth); | |
4e7a5dcd | 3061 | if (ret) |
a3530df3 | 3062 | return ERR_PTR(ret); |
27859f97 SW |
3063 | } else { |
3064 | int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
0bed9b5c SW |
3065 | auth); |
3066 | if (ret) | |
3067 | return ERR_PTR(ret); | |
4e7a5dcd | 3068 | } |
4e7a5dcd | 3069 | *proto = ac->protocol; |
74f1869f | 3070 | |
a3530df3 | 3071 | return auth; |
4e7a5dcd SW |
3072 | } |
3073 | ||
3074 | ||
3075 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
3076 | { | |
3077 | struct ceph_osd *o = con->private; | |
3078 | struct ceph_osd_client *osdc = o->o_osdc; | |
3079 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
3080 | ||
27859f97 | 3081 | return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
3082 | } |
3083 | ||
9bd2e6f8 SW |
3084 | static int invalidate_authorizer(struct ceph_connection *con) |
3085 | { | |
3086 | struct ceph_osd *o = con->private; | |
3087 | struct ceph_osd_client *osdc = o->o_osdc; | |
3088 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
3089 | ||
27859f97 | 3090 | ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
9bd2e6f8 SW |
3091 | return ceph_monc_validate_auth(&osdc->client->monc); |
3092 | } | |
4e7a5dcd | 3093 | |
79dbd1ba | 3094 | static int osd_sign_message(struct ceph_msg *msg) |
33d07337 | 3095 | { |
79dbd1ba | 3096 | struct ceph_osd *o = msg->con->private; |
33d07337 | 3097 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 3098 | |
33d07337 YZ |
3099 | return ceph_auth_sign_message(auth, msg); |
3100 | } | |
3101 | ||
79dbd1ba | 3102 | static int osd_check_message_signature(struct ceph_msg *msg) |
33d07337 | 3103 | { |
79dbd1ba | 3104 | struct ceph_osd *o = msg->con->private; |
33d07337 | 3105 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 3106 | |
33d07337 YZ |
3107 | return ceph_auth_check_message_signature(auth, msg); |
3108 | } | |
3109 | ||
9e32789f | 3110 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
3111 | .get = get_osd_con, |
3112 | .put = put_osd_con, | |
3113 | .dispatch = dispatch, | |
4e7a5dcd SW |
3114 | .get_authorizer = get_authorizer, |
3115 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 3116 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 3117 | .alloc_msg = alloc_msg, |
79dbd1ba ID |
3118 | .sign_message = osd_sign_message, |
3119 | .check_message_signature = osd_check_message_signature, | |
81b024e7 | 3120 | .fault = osd_reset, |
f24e9980 | 3121 | }; |