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 SW |
22 | #define OSD_OP_FRONT_LEN 4096 |
23 | #define OSD_OPREPLY_FRONT_LEN 512 | |
0d59ab81 | 24 | |
5522ae0b AE |
25 | static struct kmem_cache *ceph_osd_request_cache; |
26 | ||
9e32789f | 27 | static const struct ceph_connection_operations osd_con_ops; |
f24e9980 | 28 | |
f9d25199 | 29 | static void __send_queued(struct ceph_osd_client *osdc); |
6f6c7006 | 30 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); |
a40c4f10 YS |
31 | static void __register_request(struct ceph_osd_client *osdc, |
32 | struct ceph_osd_request *req); | |
2cc6128a ID |
33 | static void __unregister_request(struct ceph_osd_client *osdc, |
34 | struct ceph_osd_request *req); | |
a40c4f10 YS |
35 | static void __unregister_linger_request(struct ceph_osd_client *osdc, |
36 | struct ceph_osd_request *req); | |
2cc6128a | 37 | static void __enqueue_request(struct ceph_osd_request *req); |
56e925b6 SW |
38 | static void __send_request(struct ceph_osd_client *osdc, |
39 | struct ceph_osd_request *req); | |
f24e9980 SW |
40 | |
41 | /* | |
42 | * Implement client access to distributed object storage cluster. | |
43 | * | |
44 | * All data objects are stored within a cluster/cloud of OSDs, or | |
45 | * "object storage devices." (Note that Ceph OSDs have _nothing_ to | |
46 | * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply | |
47 | * remote daemons serving up and coordinating consistent and safe | |
48 | * access to storage. | |
49 | * | |
50 | * Cluster membership and the mapping of data objects onto storage devices | |
51 | * are described by the osd map. | |
52 | * | |
53 | * We keep track of pending OSD requests (read, write), resubmit | |
54 | * requests to different OSDs when the cluster topology/data layout | |
55 | * change, or retry the affected requests when the communications | |
56 | * channel with an OSD is reset. | |
57 | */ | |
58 | ||
59 | /* | |
60 | * calculate the mapping of a file extent onto an object, and fill out the | |
61 | * request accordingly. shorten extent as necessary if it crosses an | |
62 | * object boundary. | |
63 | * | |
64 | * fill osd op in request message. | |
65 | */ | |
dbe0fc41 | 66 | static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, |
a19dadfb | 67 | u64 *objnum, u64 *objoff, u64 *objlen) |
f24e9980 | 68 | { |
60e56f13 | 69 | u64 orig_len = *plen; |
d63b77f4 | 70 | int r; |
f24e9980 | 71 | |
60e56f13 | 72 | /* object extent? */ |
75d1c941 AE |
73 | r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, |
74 | objoff, objlen); | |
d63b77f4 SW |
75 | if (r < 0) |
76 | return r; | |
75d1c941 AE |
77 | if (*objlen < orig_len) { |
78 | *plen = *objlen; | |
60e56f13 AE |
79 | dout(" skipping last %llu, final file extent %llu~%llu\n", |
80 | orig_len - *plen, off, *plen); | |
81 | } | |
82 | ||
75d1c941 | 83 | dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); |
f24e9980 | 84 | |
3ff5f385 | 85 | return 0; |
f24e9980 SW |
86 | } |
87 | ||
c54d47bf AE |
88 | static void ceph_osd_data_init(struct ceph_osd_data *osd_data) |
89 | { | |
90 | memset(osd_data, 0, sizeof (*osd_data)); | |
91 | osd_data->type = CEPH_OSD_DATA_TYPE_NONE; | |
92 | } | |
93 | ||
a4ce40a9 | 94 | static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
95 | struct page **pages, u64 length, u32 alignment, |
96 | bool pages_from_pool, bool own_pages) | |
97 | { | |
98 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; | |
99 | osd_data->pages = pages; | |
100 | osd_data->length = length; | |
101 | osd_data->alignment = alignment; | |
102 | osd_data->pages_from_pool = pages_from_pool; | |
103 | osd_data->own_pages = own_pages; | |
104 | } | |
43bfe5de | 105 | |
a4ce40a9 | 106 | static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
107 | struct ceph_pagelist *pagelist) |
108 | { | |
109 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; | |
110 | osd_data->pagelist = pagelist; | |
111 | } | |
43bfe5de AE |
112 | |
113 | #ifdef CONFIG_BLOCK | |
a4ce40a9 | 114 | static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
115 | struct bio *bio, size_t bio_length) |
116 | { | |
117 | osd_data->type = CEPH_OSD_DATA_TYPE_BIO; | |
118 | osd_data->bio = bio; | |
119 | osd_data->bio_length = bio_length; | |
120 | } | |
43bfe5de AE |
121 | #endif /* CONFIG_BLOCK */ |
122 | ||
8a703a38 IC |
123 | #define osd_req_op_data(oreq, whch, typ, fld) \ |
124 | ({ \ | |
125 | struct ceph_osd_request *__oreq = (oreq); \ | |
126 | unsigned int __whch = (whch); \ | |
127 | BUG_ON(__whch >= __oreq->r_num_ops); \ | |
128 | &__oreq->r_ops[__whch].typ.fld; \ | |
129 | }) | |
863c7eb5 | 130 | |
49719778 AE |
131 | static struct ceph_osd_data * |
132 | osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) | |
133 | { | |
134 | BUG_ON(which >= osd_req->r_num_ops); | |
135 | ||
136 | return &osd_req->r_ops[which].raw_data_in; | |
137 | } | |
138 | ||
a4ce40a9 AE |
139 | struct ceph_osd_data * |
140 | osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, | |
406e2c9f | 141 | unsigned int which) |
a4ce40a9 | 142 | { |
863c7eb5 | 143 | return osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
144 | } |
145 | EXPORT_SYMBOL(osd_req_op_extent_osd_data); | |
146 | ||
a4ce40a9 AE |
147 | struct ceph_osd_data * |
148 | osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, | |
149 | unsigned int which) | |
150 | { | |
863c7eb5 | 151 | return osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
152 | } |
153 | EXPORT_SYMBOL(osd_req_op_cls_response_data); /* ??? */ | |
154 | ||
49719778 AE |
155 | void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, |
156 | unsigned int which, struct page **pages, | |
157 | u64 length, u32 alignment, | |
158 | bool pages_from_pool, bool own_pages) | |
159 | { | |
160 | struct ceph_osd_data *osd_data; | |
161 | ||
162 | osd_data = osd_req_op_raw_data_in(osd_req, which); | |
163 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
164 | pages_from_pool, own_pages); | |
165 | } | |
166 | EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); | |
167 | ||
a4ce40a9 | 168 | void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, |
406e2c9f AE |
169 | unsigned int which, struct page **pages, |
170 | u64 length, u32 alignment, | |
a4ce40a9 AE |
171 | bool pages_from_pool, bool own_pages) |
172 | { | |
173 | struct ceph_osd_data *osd_data; | |
174 | ||
863c7eb5 | 175 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
176 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
177 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
178 | } |
179 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); | |
180 | ||
181 | void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, | |
406e2c9f | 182 | unsigned int which, struct ceph_pagelist *pagelist) |
a4ce40a9 AE |
183 | { |
184 | struct ceph_osd_data *osd_data; | |
185 | ||
863c7eb5 | 186 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 | 187 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
188 | } |
189 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); | |
190 | ||
191 | #ifdef CONFIG_BLOCK | |
192 | void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, | |
406e2c9f | 193 | unsigned int which, struct bio *bio, size_t bio_length) |
a4ce40a9 AE |
194 | { |
195 | struct ceph_osd_data *osd_data; | |
863c7eb5 AE |
196 | |
197 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); | |
a4ce40a9 | 198 | ceph_osd_data_bio_init(osd_data, bio, bio_length); |
a4ce40a9 AE |
199 | } |
200 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); | |
201 | #endif /* CONFIG_BLOCK */ | |
202 | ||
203 | static void osd_req_op_cls_request_info_pagelist( | |
204 | struct ceph_osd_request *osd_req, | |
205 | unsigned int which, struct ceph_pagelist *pagelist) | |
206 | { | |
207 | struct ceph_osd_data *osd_data; | |
208 | ||
863c7eb5 | 209 | osd_data = osd_req_op_data(osd_req, which, cls, request_info); |
a4ce40a9 | 210 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
211 | } |
212 | ||
04017e29 AE |
213 | void osd_req_op_cls_request_data_pagelist( |
214 | struct ceph_osd_request *osd_req, | |
215 | unsigned int which, struct ceph_pagelist *pagelist) | |
216 | { | |
217 | struct ceph_osd_data *osd_data; | |
218 | ||
863c7eb5 | 219 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); |
04017e29 AE |
220 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
221 | } | |
222 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); | |
223 | ||
6c57b554 AE |
224 | void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, |
225 | unsigned int which, struct page **pages, u64 length, | |
226 | u32 alignment, bool pages_from_pool, bool own_pages) | |
227 | { | |
228 | struct ceph_osd_data *osd_data; | |
229 | ||
230 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); | |
231 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
232 | pages_from_pool, own_pages); | |
233 | } | |
234 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); | |
235 | ||
a4ce40a9 AE |
236 | void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, |
237 | unsigned int which, struct page **pages, u64 length, | |
238 | u32 alignment, bool pages_from_pool, bool own_pages) | |
239 | { | |
240 | struct ceph_osd_data *osd_data; | |
241 | ||
863c7eb5 | 242 | osd_data = osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
243 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
244 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
245 | } |
246 | EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); | |
247 | ||
23c08a9c AE |
248 | static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) |
249 | { | |
250 | switch (osd_data->type) { | |
251 | case CEPH_OSD_DATA_TYPE_NONE: | |
252 | return 0; | |
253 | case CEPH_OSD_DATA_TYPE_PAGES: | |
254 | return osd_data->length; | |
255 | case CEPH_OSD_DATA_TYPE_PAGELIST: | |
256 | return (u64)osd_data->pagelist->length; | |
257 | #ifdef CONFIG_BLOCK | |
258 | case CEPH_OSD_DATA_TYPE_BIO: | |
259 | return (u64)osd_data->bio_length; | |
260 | #endif /* CONFIG_BLOCK */ | |
261 | default: | |
262 | WARN(true, "unrecognized data type %d\n", (int)osd_data->type); | |
263 | return 0; | |
264 | } | |
265 | } | |
266 | ||
c54d47bf AE |
267 | static void ceph_osd_data_release(struct ceph_osd_data *osd_data) |
268 | { | |
5476492f | 269 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { |
c54d47bf AE |
270 | int num_pages; |
271 | ||
272 | num_pages = calc_pages_for((u64)osd_data->alignment, | |
273 | (u64)osd_data->length); | |
274 | ceph_release_page_vector(osd_data->pages, num_pages); | |
275 | } | |
5476492f AE |
276 | ceph_osd_data_init(osd_data); |
277 | } | |
278 | ||
279 | static void osd_req_op_data_release(struct ceph_osd_request *osd_req, | |
280 | unsigned int which) | |
281 | { | |
282 | struct ceph_osd_req_op *op; | |
283 | ||
284 | BUG_ON(which >= osd_req->r_num_ops); | |
285 | op = &osd_req->r_ops[which]; | |
286 | ||
287 | switch (op->op) { | |
288 | case CEPH_OSD_OP_READ: | |
289 | case CEPH_OSD_OP_WRITE: | |
e30b7577 | 290 | case CEPH_OSD_OP_WRITEFULL: |
5476492f AE |
291 | ceph_osd_data_release(&op->extent.osd_data); |
292 | break; | |
293 | case CEPH_OSD_OP_CALL: | |
294 | ceph_osd_data_release(&op->cls.request_info); | |
04017e29 | 295 | ceph_osd_data_release(&op->cls.request_data); |
5476492f AE |
296 | ceph_osd_data_release(&op->cls.response_data); |
297 | break; | |
d74b50be YZ |
298 | case CEPH_OSD_OP_SETXATTR: |
299 | case CEPH_OSD_OP_CMPXATTR: | |
300 | ceph_osd_data_release(&op->xattr.osd_data); | |
301 | break; | |
66ba609f YZ |
302 | case CEPH_OSD_OP_STAT: |
303 | ceph_osd_data_release(&op->raw_data_in); | |
304 | break; | |
5476492f AE |
305 | default: |
306 | break; | |
307 | } | |
c54d47bf AE |
308 | } |
309 | ||
f24e9980 SW |
310 | /* |
311 | * requests | |
312 | */ | |
9e94af20 | 313 | static void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 314 | { |
9e94af20 ID |
315 | struct ceph_osd_request *req = container_of(kref, |
316 | struct ceph_osd_request, r_kref); | |
5476492f | 317 | unsigned int which; |
415e49a9 | 318 | |
9e94af20 ID |
319 | dout("%s %p (r_request %p r_reply %p)\n", __func__, req, |
320 | req->r_request, req->r_reply); | |
6562d661 ID |
321 | WARN_ON(!RB_EMPTY_NODE(&req->r_node)); |
322 | WARN_ON(!list_empty(&req->r_req_lru_item)); | |
323 | WARN_ON(!list_empty(&req->r_osd_item)); | |
324 | WARN_ON(!list_empty(&req->r_linger_item)); | |
325 | WARN_ON(!list_empty(&req->r_linger_osd_item)); | |
326 | WARN_ON(req->r_osd); | |
9e94af20 | 327 | |
415e49a9 SW |
328 | if (req->r_request) |
329 | ceph_msg_put(req->r_request); | |
ace6d3a9 | 330 | if (req->r_reply) { |
8921d114 | 331 | ceph_msg_revoke_incoming(req->r_reply); |
ab8cb34a | 332 | ceph_msg_put(req->r_reply); |
ace6d3a9 | 333 | } |
0fff87ec | 334 | |
5476492f AE |
335 | for (which = 0; which < req->r_num_ops; which++) |
336 | osd_req_op_data_release(req, which); | |
0fff87ec | 337 | |
415e49a9 SW |
338 | ceph_put_snap_context(req->r_snapc); |
339 | if (req->r_mempool) | |
340 | mempool_free(req, req->r_osdc->req_mempool); | |
341 | else | |
5522ae0b AE |
342 | kmem_cache_free(ceph_osd_request_cache, req); |
343 | ||
f24e9980 | 344 | } |
9e94af20 ID |
345 | |
346 | void ceph_osdc_get_request(struct ceph_osd_request *req) | |
347 | { | |
348 | dout("%s %p (was %d)\n", __func__, req, | |
349 | atomic_read(&req->r_kref.refcount)); | |
350 | kref_get(&req->r_kref); | |
351 | } | |
352 | EXPORT_SYMBOL(ceph_osdc_get_request); | |
353 | ||
354 | void ceph_osdc_put_request(struct ceph_osd_request *req) | |
355 | { | |
356 | dout("%s %p (was %d)\n", __func__, req, | |
357 | atomic_read(&req->r_kref.refcount)); | |
358 | kref_put(&req->r_kref, ceph_osdc_release_request); | |
359 | } | |
360 | EXPORT_SYMBOL(ceph_osdc_put_request); | |
68b4476b | 361 | |
3499e8a5 | 362 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 363 | struct ceph_snap_context *snapc, |
1b83bef2 | 364 | unsigned int num_ops, |
3499e8a5 | 365 | bool use_mempool, |
54a54007 | 366 | gfp_t gfp_flags) |
f24e9980 SW |
367 | { |
368 | struct ceph_osd_request *req; | |
369 | struct ceph_msg *msg; | |
1b83bef2 SW |
370 | size_t msg_size; |
371 | ||
79528734 AE |
372 | BUILD_BUG_ON(CEPH_OSD_MAX_OP > U16_MAX); |
373 | BUG_ON(num_ops > CEPH_OSD_MAX_OP); | |
374 | ||
f24e9980 | 375 | if (use_mempool) { |
3499e8a5 | 376 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
f24e9980 SW |
377 | memset(req, 0, sizeof(*req)); |
378 | } else { | |
5522ae0b | 379 | req = kmem_cache_zalloc(ceph_osd_request_cache, gfp_flags); |
f24e9980 SW |
380 | } |
381 | if (req == NULL) | |
a79832f2 | 382 | return NULL; |
f24e9980 | 383 | |
f24e9980 SW |
384 | req->r_osdc = osdc; |
385 | req->r_mempool = use_mempool; | |
79528734 | 386 | req->r_num_ops = num_ops; |
68b4476b | 387 | |
415e49a9 | 388 | kref_init(&req->r_kref); |
f24e9980 SW |
389 | init_completion(&req->r_completion); |
390 | init_completion(&req->r_safe_completion); | |
a978fa20 | 391 | RB_CLEAR_NODE(&req->r_node); |
f24e9980 | 392 | INIT_LIST_HEAD(&req->r_unsafe_item); |
a40c4f10 | 393 | INIT_LIST_HEAD(&req->r_linger_item); |
1d0326b1 | 394 | INIT_LIST_HEAD(&req->r_linger_osd_item); |
935b639a | 395 | INIT_LIST_HEAD(&req->r_req_lru_item); |
cd43045c SW |
396 | INIT_LIST_HEAD(&req->r_osd_item); |
397 | ||
3c972c95 | 398 | req->r_base_oloc.pool = -1; |
205ee118 | 399 | req->r_target_oloc.pool = -1; |
22116525 | 400 | |
c16e7869 SW |
401 | /* create reply message */ |
402 | if (use_mempool) | |
403 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
404 | else | |
405 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, | |
b61c2763 | 406 | OSD_OPREPLY_FRONT_LEN, gfp_flags, true); |
a79832f2 | 407 | if (!msg) { |
c16e7869 | 408 | ceph_osdc_put_request(req); |
a79832f2 | 409 | return NULL; |
c16e7869 SW |
410 | } |
411 | req->r_reply = msg; | |
412 | ||
ae458f5a ID |
413 | msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ |
414 | msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ | |
415 | msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ | |
416 | msg_size += 1 + 8 + 4 + 4; /* pgid */ | |
417 | msg_size += 4 + CEPH_MAX_OID_NAME_LEN; /* oid */ | |
418 | msg_size += 2 + num_ops * sizeof(struct ceph_osd_op); | |
419 | msg_size += 8; /* snapid */ | |
420 | msg_size += 8; /* snap_seq */ | |
421 | msg_size += 4 + 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ | |
422 | msg_size += 4; /* retry_attempt */ | |
423 | ||
c16e7869 | 424 | /* create request message; allow space for oid */ |
f24e9980 | 425 | if (use_mempool) |
8f3bc053 | 426 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 427 | else |
b61c2763 | 428 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); |
a79832f2 | 429 | if (!msg) { |
f24e9980 | 430 | ceph_osdc_put_request(req); |
a79832f2 | 431 | return NULL; |
f24e9980 | 432 | } |
68b4476b | 433 | |
f24e9980 | 434 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 YS |
435 | |
436 | req->r_request = msg; | |
3499e8a5 YS |
437 | |
438 | return req; | |
439 | } | |
3d14c5d2 | 440 | EXPORT_SYMBOL(ceph_osdc_alloc_request); |
3499e8a5 | 441 | |
a8dd0a37 | 442 | static bool osd_req_opcode_valid(u16 opcode) |
68b4476b | 443 | { |
a8dd0a37 | 444 | switch (opcode) { |
70b5bfa3 ID |
445 | #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; |
446 | __CEPH_FORALL_OSD_OPS(GENERATE_CASE) | |
447 | #undef GENERATE_CASE | |
a8dd0a37 AE |
448 | default: |
449 | return false; | |
450 | } | |
451 | } | |
452 | ||
33803f33 AE |
453 | /* |
454 | * This is an osd op init function for opcodes that have no data or | |
455 | * other information associated with them. It also serves as a | |
456 | * common init routine for all the other init functions, below. | |
457 | */ | |
c99d2d4a | 458 | static struct ceph_osd_req_op * |
49719778 | 459 | _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, |
144cba14 | 460 | u16 opcode, u32 flags) |
33803f33 | 461 | { |
c99d2d4a AE |
462 | struct ceph_osd_req_op *op; |
463 | ||
464 | BUG_ON(which >= osd_req->r_num_ops); | |
33803f33 AE |
465 | BUG_ON(!osd_req_opcode_valid(opcode)); |
466 | ||
c99d2d4a | 467 | op = &osd_req->r_ops[which]; |
33803f33 | 468 | memset(op, 0, sizeof (*op)); |
33803f33 | 469 | op->op = opcode; |
144cba14 | 470 | op->flags = flags; |
c99d2d4a AE |
471 | |
472 | return op; | |
33803f33 AE |
473 | } |
474 | ||
49719778 | 475 | void osd_req_op_init(struct ceph_osd_request *osd_req, |
144cba14 | 476 | unsigned int which, u16 opcode, u32 flags) |
49719778 | 477 | { |
144cba14 | 478 | (void)_osd_req_op_init(osd_req, which, opcode, flags); |
49719778 AE |
479 | } |
480 | EXPORT_SYMBOL(osd_req_op_init); | |
481 | ||
c99d2d4a AE |
482 | void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
483 | unsigned int which, u16 opcode, | |
33803f33 AE |
484 | u64 offset, u64 length, |
485 | u64 truncate_size, u32 truncate_seq) | |
486 | { | |
144cba14 YZ |
487 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
488 | opcode, 0); | |
33803f33 AE |
489 | size_t payload_len = 0; |
490 | ||
ad7a60de | 491 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
e30b7577 ID |
492 | opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && |
493 | opcode != CEPH_OSD_OP_TRUNCATE); | |
33803f33 | 494 | |
33803f33 AE |
495 | op->extent.offset = offset; |
496 | op->extent.length = length; | |
497 | op->extent.truncate_size = truncate_size; | |
498 | op->extent.truncate_seq = truncate_seq; | |
e30b7577 | 499 | if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) |
33803f33 AE |
500 | payload_len += length; |
501 | ||
de2aa102 | 502 | op->indata_len = payload_len; |
33803f33 AE |
503 | } |
504 | EXPORT_SYMBOL(osd_req_op_extent_init); | |
505 | ||
c99d2d4a AE |
506 | void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
507 | unsigned int which, u64 length) | |
e5975c7c | 508 | { |
c99d2d4a AE |
509 | struct ceph_osd_req_op *op; |
510 | u64 previous; | |
511 | ||
512 | BUG_ON(which >= osd_req->r_num_ops); | |
513 | op = &osd_req->r_ops[which]; | |
514 | previous = op->extent.length; | |
e5975c7c AE |
515 | |
516 | if (length == previous) | |
517 | return; /* Nothing to do */ | |
518 | BUG_ON(length > previous); | |
519 | ||
520 | op->extent.length = length; | |
de2aa102 | 521 | op->indata_len -= previous - length; |
e5975c7c AE |
522 | } |
523 | EXPORT_SYMBOL(osd_req_op_extent_update); | |
524 | ||
c99d2d4a | 525 | void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, |
04017e29 | 526 | u16 opcode, const char *class, const char *method) |
33803f33 | 527 | { |
144cba14 YZ |
528 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
529 | opcode, 0); | |
5f562df5 | 530 | struct ceph_pagelist *pagelist; |
33803f33 AE |
531 | size_t payload_len = 0; |
532 | size_t size; | |
533 | ||
534 | BUG_ON(opcode != CEPH_OSD_OP_CALL); | |
535 | ||
5f562df5 AE |
536 | pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); |
537 | BUG_ON(!pagelist); | |
538 | ceph_pagelist_init(pagelist); | |
539 | ||
33803f33 AE |
540 | op->cls.class_name = class; |
541 | size = strlen(class); | |
542 | BUG_ON(size > (size_t) U8_MAX); | |
543 | op->cls.class_len = size; | |
5f562df5 | 544 | ceph_pagelist_append(pagelist, class, size); |
33803f33 AE |
545 | payload_len += size; |
546 | ||
547 | op->cls.method_name = method; | |
548 | size = strlen(method); | |
549 | BUG_ON(size > (size_t) U8_MAX); | |
550 | op->cls.method_len = size; | |
5f562df5 | 551 | ceph_pagelist_append(pagelist, method, size); |
33803f33 AE |
552 | payload_len += size; |
553 | ||
a4ce40a9 | 554 | osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); |
5f562df5 | 555 | |
33803f33 AE |
556 | op->cls.argc = 0; /* currently unused */ |
557 | ||
de2aa102 | 558 | op->indata_len = payload_len; |
33803f33 AE |
559 | } |
560 | EXPORT_SYMBOL(osd_req_op_cls_init); | |
8c042b0d | 561 | |
d74b50be YZ |
562 | int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, |
563 | u16 opcode, const char *name, const void *value, | |
564 | size_t size, u8 cmp_op, u8 cmp_mode) | |
565 | { | |
144cba14 YZ |
566 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
567 | opcode, 0); | |
d74b50be YZ |
568 | struct ceph_pagelist *pagelist; |
569 | size_t payload_len; | |
570 | ||
571 | BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); | |
572 | ||
573 | pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); | |
574 | if (!pagelist) | |
575 | return -ENOMEM; | |
576 | ||
577 | ceph_pagelist_init(pagelist); | |
578 | ||
579 | payload_len = strlen(name); | |
580 | op->xattr.name_len = payload_len; | |
581 | ceph_pagelist_append(pagelist, name, payload_len); | |
582 | ||
583 | op->xattr.value_len = size; | |
584 | ceph_pagelist_append(pagelist, value, size); | |
585 | payload_len += size; | |
586 | ||
587 | op->xattr.cmp_op = cmp_op; | |
588 | op->xattr.cmp_mode = cmp_mode; | |
589 | ||
590 | ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); | |
de2aa102 | 591 | op->indata_len = payload_len; |
d74b50be YZ |
592 | return 0; |
593 | } | |
594 | EXPORT_SYMBOL(osd_req_op_xattr_init); | |
595 | ||
c99d2d4a AE |
596 | void osd_req_op_watch_init(struct ceph_osd_request *osd_req, |
597 | unsigned int which, u16 opcode, | |
33803f33 AE |
598 | u64 cookie, u64 version, int flag) |
599 | { | |
144cba14 YZ |
600 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
601 | opcode, 0); | |
33803f33 | 602 | |
c99d2d4a | 603 | BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); |
33803f33 AE |
604 | |
605 | op->watch.cookie = cookie; | |
9ef1ee5a | 606 | op->watch.ver = version; |
33803f33 | 607 | if (opcode == CEPH_OSD_OP_WATCH && flag) |
c99d2d4a | 608 | op->watch.flag = (u8)1; |
33803f33 AE |
609 | } |
610 | EXPORT_SYMBOL(osd_req_op_watch_init); | |
611 | ||
c647b8a8 ID |
612 | void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, |
613 | unsigned int which, | |
614 | u64 expected_object_size, | |
615 | u64 expected_write_size) | |
616 | { | |
617 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, | |
144cba14 YZ |
618 | CEPH_OSD_OP_SETALLOCHINT, |
619 | 0); | |
c647b8a8 ID |
620 | |
621 | op->alloc_hint.expected_object_size = expected_object_size; | |
622 | op->alloc_hint.expected_write_size = expected_write_size; | |
623 | ||
624 | /* | |
625 | * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed | |
626 | * not worth a feature bit. Set FAILOK per-op flag to make | |
627 | * sure older osds don't trip over an unsupported opcode. | |
628 | */ | |
629 | op->flags |= CEPH_OSD_OP_FLAG_FAILOK; | |
630 | } | |
631 | EXPORT_SYMBOL(osd_req_op_alloc_hint_init); | |
632 | ||
90af3602 | 633 | static void ceph_osdc_msg_data_add(struct ceph_msg *msg, |
ec9123c5 AE |
634 | struct ceph_osd_data *osd_data) |
635 | { | |
636 | u64 length = ceph_osd_data_length(osd_data); | |
637 | ||
638 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { | |
639 | BUG_ON(length > (u64) SIZE_MAX); | |
640 | if (length) | |
90af3602 | 641 | ceph_msg_data_add_pages(msg, osd_data->pages, |
ec9123c5 AE |
642 | length, osd_data->alignment); |
643 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { | |
644 | BUG_ON(!length); | |
90af3602 | 645 | ceph_msg_data_add_pagelist(msg, osd_data->pagelist); |
ec9123c5 AE |
646 | #ifdef CONFIG_BLOCK |
647 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { | |
90af3602 | 648 | ceph_msg_data_add_bio(msg, osd_data->bio, length); |
ec9123c5 AE |
649 | #endif |
650 | } else { | |
651 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); | |
652 | } | |
653 | } | |
654 | ||
a8dd0a37 | 655 | static u64 osd_req_encode_op(struct ceph_osd_request *req, |
79528734 | 656 | struct ceph_osd_op *dst, unsigned int which) |
a8dd0a37 | 657 | { |
79528734 | 658 | struct ceph_osd_req_op *src; |
04017e29 | 659 | struct ceph_osd_data *osd_data; |
54d50649 | 660 | u64 request_data_len = 0; |
04017e29 | 661 | u64 data_length; |
a8dd0a37 | 662 | |
79528734 AE |
663 | BUG_ON(which >= req->r_num_ops); |
664 | src = &req->r_ops[which]; | |
a8dd0a37 AE |
665 | if (WARN_ON(!osd_req_opcode_valid(src->op))) { |
666 | pr_err("unrecognized osd opcode %d\n", src->op); | |
667 | ||
668 | return 0; | |
669 | } | |
670 | ||
671 | switch (src->op) { | |
672 | case CEPH_OSD_OP_STAT: | |
49719778 AE |
673 | osd_data = &src->raw_data_in; |
674 | ceph_osdc_msg_data_add(req->r_reply, osd_data); | |
a8dd0a37 AE |
675 | break; |
676 | case CEPH_OSD_OP_READ: | |
677 | case CEPH_OSD_OP_WRITE: | |
e30b7577 | 678 | case CEPH_OSD_OP_WRITEFULL: |
ad7a60de | 679 | case CEPH_OSD_OP_ZERO: |
ad7a60de | 680 | case CEPH_OSD_OP_TRUNCATE: |
e30b7577 ID |
681 | if (src->op == CEPH_OSD_OP_WRITE || |
682 | src->op == CEPH_OSD_OP_WRITEFULL) | |
54d50649 | 683 | request_data_len = src->extent.length; |
a8dd0a37 AE |
684 | dst->extent.offset = cpu_to_le64(src->extent.offset); |
685 | dst->extent.length = cpu_to_le64(src->extent.length); | |
686 | dst->extent.truncate_size = | |
687 | cpu_to_le64(src->extent.truncate_size); | |
688 | dst->extent.truncate_seq = | |
689 | cpu_to_le32(src->extent.truncate_seq); | |
04017e29 | 690 | osd_data = &src->extent.osd_data; |
e30b7577 ID |
691 | if (src->op == CEPH_OSD_OP_WRITE || |
692 | src->op == CEPH_OSD_OP_WRITEFULL) | |
04017e29 | 693 | ceph_osdc_msg_data_add(req->r_request, osd_data); |
5476492f | 694 | else |
04017e29 | 695 | ceph_osdc_msg_data_add(req->r_reply, osd_data); |
a8dd0a37 AE |
696 | break; |
697 | case CEPH_OSD_OP_CALL: | |
a8dd0a37 AE |
698 | dst->cls.class_len = src->cls.class_len; |
699 | dst->cls.method_len = src->cls.method_len; | |
04017e29 AE |
700 | osd_data = &src->cls.request_info; |
701 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
702 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); | |
703 | request_data_len = osd_data->pagelist->length; | |
704 | ||
705 | osd_data = &src->cls.request_data; | |
706 | data_length = ceph_osd_data_length(osd_data); | |
707 | if (data_length) { | |
708 | BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); | |
709 | dst->cls.indata_len = cpu_to_le32(data_length); | |
710 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
de2aa102 | 711 | src->indata_len += data_length; |
04017e29 AE |
712 | request_data_len += data_length; |
713 | } | |
714 | osd_data = &src->cls.response_data; | |
715 | ceph_osdc_msg_data_add(req->r_reply, osd_data); | |
a8dd0a37 AE |
716 | break; |
717 | case CEPH_OSD_OP_STARTSYNC: | |
718 | break; | |
719 | case CEPH_OSD_OP_NOTIFY_ACK: | |
720 | case CEPH_OSD_OP_WATCH: | |
721 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
722 | dst->watch.ver = cpu_to_le64(src->watch.ver); | |
723 | dst->watch.flag = src->watch.flag; | |
724 | break; | |
c647b8a8 ID |
725 | case CEPH_OSD_OP_SETALLOCHINT: |
726 | dst->alloc_hint.expected_object_size = | |
727 | cpu_to_le64(src->alloc_hint.expected_object_size); | |
728 | dst->alloc_hint.expected_write_size = | |
729 | cpu_to_le64(src->alloc_hint.expected_write_size); | |
730 | break; | |
d74b50be YZ |
731 | case CEPH_OSD_OP_SETXATTR: |
732 | case CEPH_OSD_OP_CMPXATTR: | |
733 | dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); | |
734 | dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); | |
735 | dst->xattr.cmp_op = src->xattr.cmp_op; | |
736 | dst->xattr.cmp_mode = src->xattr.cmp_mode; | |
737 | osd_data = &src->xattr.osd_data; | |
738 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
739 | request_data_len = osd_data->pagelist->length; | |
740 | break; | |
864e9197 YZ |
741 | case CEPH_OSD_OP_CREATE: |
742 | case CEPH_OSD_OP_DELETE: | |
743 | break; | |
a8dd0a37 | 744 | default: |
4c46459c | 745 | pr_err("unsupported osd opcode %s\n", |
8f63ca2d | 746 | ceph_osd_op_name(src->op)); |
4c46459c | 747 | WARN_ON(1); |
a8dd0a37 AE |
748 | |
749 | return 0; | |
68b4476b | 750 | } |
7b25bf5f | 751 | |
a8dd0a37 | 752 | dst->op = cpu_to_le16(src->op); |
7b25bf5f | 753 | dst->flags = cpu_to_le32(src->flags); |
de2aa102 | 754 | dst->payload_len = cpu_to_le32(src->indata_len); |
175face2 | 755 | |
54d50649 | 756 | return request_data_len; |
68b4476b YS |
757 | } |
758 | ||
3499e8a5 YS |
759 | /* |
760 | * build new request AND message, calculate layout, and adjust file | |
761 | * extent as needed. | |
762 | * | |
763 | * if the file was recently truncated, we include information about its | |
764 | * old and new size so that the object can be updated appropriately. (we | |
765 | * avoid synchronously deleting truncated objects because it's slow.) | |
766 | * | |
767 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
768 | * data quickly. | |
769 | */ | |
770 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
771 | struct ceph_file_layout *layout, | |
772 | struct ceph_vino vino, | |
715e4cd4 YZ |
773 | u64 off, u64 *plen, |
774 | unsigned int which, int num_ops, | |
3499e8a5 YS |
775 | int opcode, int flags, |
776 | struct ceph_snap_context *snapc, | |
3499e8a5 YS |
777 | u32 truncate_seq, |
778 | u64 truncate_size, | |
153e5167 | 779 | bool use_mempool) |
3499e8a5 | 780 | { |
68b4476b | 781 | struct ceph_osd_request *req; |
75d1c941 AE |
782 | u64 objnum = 0; |
783 | u64 objoff = 0; | |
784 | u64 objlen = 0; | |
6816282d | 785 | int r; |
68b4476b | 786 | |
ad7a60de | 787 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
864e9197 YZ |
788 | opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && |
789 | opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); | |
68b4476b | 790 | |
acead002 | 791 | req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, |
ae7ca4a3 | 792 | GFP_NOFS); |
4ad12621 | 793 | if (!req) |
6816282d | 794 | return ERR_PTR(-ENOMEM); |
79528734 | 795 | |
d178a9e7 | 796 | req->r_flags = flags; |
3499e8a5 YS |
797 | |
798 | /* calculate max write size */ | |
a19dadfb | 799 | r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); |
3ff5f385 AE |
800 | if (r < 0) { |
801 | ceph_osdc_put_request(req); | |
6816282d | 802 | return ERR_PTR(r); |
3ff5f385 | 803 | } |
a19dadfb | 804 | |
864e9197 | 805 | if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { |
144cba14 | 806 | osd_req_op_init(req, which, opcode, 0); |
864e9197 YZ |
807 | } else { |
808 | u32 object_size = le32_to_cpu(layout->fl_object_size); | |
809 | u32 object_base = off - objoff; | |
810 | if (!(truncate_seq == 1 && truncate_size == -1ULL)) { | |
811 | if (truncate_size <= object_base) { | |
812 | truncate_size = 0; | |
813 | } else { | |
814 | truncate_size -= object_base; | |
815 | if (truncate_size > object_size) | |
816 | truncate_size = object_size; | |
817 | } | |
ccca4e37 | 818 | } |
715e4cd4 | 819 | osd_req_op_extent_init(req, which, opcode, objoff, objlen, |
864e9197 YZ |
820 | truncate_size, truncate_seq); |
821 | } | |
d18d1e28 | 822 | |
3c972c95 | 823 | req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); |
3499e8a5 | 824 | |
3c972c95 | 825 | snprintf(req->r_base_oid.name, sizeof(req->r_base_oid.name), |
4295f221 | 826 | "%llx.%08llx", vino.ino, objnum); |
3c972c95 | 827 | req->r_base_oid.name_len = strlen(req->r_base_oid.name); |
dbe0fc41 | 828 | |
f24e9980 SW |
829 | return req; |
830 | } | |
3d14c5d2 | 831 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
832 | |
833 | /* | |
834 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
835 | */ | |
836 | static void __insert_request(struct ceph_osd_client *osdc, | |
837 | struct ceph_osd_request *new) | |
838 | { | |
839 | struct rb_node **p = &osdc->requests.rb_node; | |
840 | struct rb_node *parent = NULL; | |
841 | struct ceph_osd_request *req = NULL; | |
842 | ||
843 | while (*p) { | |
844 | parent = *p; | |
845 | req = rb_entry(parent, struct ceph_osd_request, r_node); | |
846 | if (new->r_tid < req->r_tid) | |
847 | p = &(*p)->rb_left; | |
848 | else if (new->r_tid > req->r_tid) | |
849 | p = &(*p)->rb_right; | |
850 | else | |
851 | BUG(); | |
852 | } | |
853 | ||
854 | rb_link_node(&new->r_node, parent, p); | |
855 | rb_insert_color(&new->r_node, &osdc->requests); | |
856 | } | |
857 | ||
858 | static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, | |
859 | u64 tid) | |
860 | { | |
861 | struct ceph_osd_request *req; | |
862 | struct rb_node *n = osdc->requests.rb_node; | |
863 | ||
864 | while (n) { | |
865 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
866 | if (tid < req->r_tid) | |
867 | n = n->rb_left; | |
868 | else if (tid > req->r_tid) | |
869 | n = n->rb_right; | |
870 | else | |
871 | return req; | |
872 | } | |
873 | return NULL; | |
874 | } | |
875 | ||
876 | static struct ceph_osd_request * | |
877 | __lookup_request_ge(struct ceph_osd_client *osdc, | |
878 | u64 tid) | |
879 | { | |
880 | struct ceph_osd_request *req; | |
881 | struct rb_node *n = osdc->requests.rb_node; | |
882 | ||
883 | while (n) { | |
884 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
885 | if (tid < req->r_tid) { | |
886 | if (!n->rb_left) | |
887 | return req; | |
888 | n = n->rb_left; | |
889 | } else if (tid > req->r_tid) { | |
890 | n = n->rb_right; | |
891 | } else { | |
892 | return req; | |
893 | } | |
894 | } | |
895 | return NULL; | |
896 | } | |
897 | ||
2cc6128a ID |
898 | static void __kick_linger_request(struct ceph_osd_request *req) |
899 | { | |
900 | struct ceph_osd_client *osdc = req->r_osdc; | |
901 | struct ceph_osd *osd = req->r_osd; | |
902 | ||
903 | /* | |
904 | * Linger requests need to be resent with a new tid to avoid | |
905 | * the dup op detection logic on the OSDs. Achieve this with | |
906 | * a re-register dance instead of open-coding. | |
907 | */ | |
908 | ceph_osdc_get_request(req); | |
909 | if (!list_empty(&req->r_linger_item)) | |
910 | __unregister_linger_request(osdc, req); | |
911 | else | |
912 | __unregister_request(osdc, req); | |
913 | __register_request(osdc, req); | |
914 | ceph_osdc_put_request(req); | |
915 | ||
916 | /* | |
917 | * Unless request has been registered as both normal and | |
918 | * lingering, __unregister{,_linger}_request clears r_osd. | |
919 | * However, here we need to preserve r_osd to make sure we | |
920 | * requeue on the same OSD. | |
921 | */ | |
922 | WARN_ON(req->r_osd || !osd); | |
923 | req->r_osd = osd; | |
924 | ||
925 | dout("%s requeueing %p tid %llu\n", __func__, req, req->r_tid); | |
926 | __enqueue_request(req); | |
927 | } | |
928 | ||
6f6c7006 SW |
929 | /* |
930 | * Resubmit requests pending on the given osd. | |
931 | */ | |
932 | static void __kick_osd_requests(struct ceph_osd_client *osdc, | |
933 | struct ceph_osd *osd) | |
934 | { | |
a40c4f10 | 935 | struct ceph_osd_request *req, *nreq; |
e02493c0 | 936 | LIST_HEAD(resend); |
2cc6128a | 937 | LIST_HEAD(resend_linger); |
6f6c7006 SW |
938 | int err; |
939 | ||
2cc6128a | 940 | dout("%s osd%d\n", __func__, osd->o_osd); |
6f6c7006 | 941 | err = __reset_osd(osdc, osd); |
685a7555 | 942 | if (err) |
6f6c7006 | 943 | return; |
2cc6128a | 944 | |
e02493c0 AE |
945 | /* |
946 | * Build up a list of requests to resend by traversing the | |
947 | * osd's list of requests. Requests for a given object are | |
948 | * sent in tid order, and that is also the order they're | |
949 | * kept on this list. Therefore all requests that are in | |
950 | * flight will be found first, followed by all requests that | |
951 | * have not yet been sent. And to resend requests while | |
952 | * preserving this order we will want to put any sent | |
953 | * requests back on the front of the osd client's unsent | |
954 | * list. | |
955 | * | |
956 | * So we build a separate ordered list of already-sent | |
957 | * requests for the affected osd and splice it onto the | |
958 | * front of the osd client's unsent list. Once we've seen a | |
959 | * request that has not yet been sent we're done. Those | |
960 | * requests are already sitting right where they belong. | |
961 | */ | |
6f6c7006 | 962 | list_for_each_entry(req, &osd->o_requests, r_osd_item) { |
e02493c0 AE |
963 | if (!req->r_sent) |
964 | break; | |
2cc6128a ID |
965 | |
966 | if (!req->r_linger) { | |
967 | dout("%s requeueing %p tid %llu\n", __func__, req, | |
968 | req->r_tid); | |
969 | list_move_tail(&req->r_req_lru_item, &resend); | |
a40c4f10 | 970 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
2cc6128a ID |
971 | } else { |
972 | list_move_tail(&req->r_req_lru_item, &resend_linger); | |
973 | } | |
a40c4f10 | 974 | } |
e02493c0 | 975 | list_splice(&resend, &osdc->req_unsent); |
a40c4f10 | 976 | |
e02493c0 | 977 | /* |
2cc6128a ID |
978 | * Both registered and not yet registered linger requests are |
979 | * enqueued with a new tid on the same OSD. We add/move them | |
980 | * to req_unsent/o_requests at the end to keep things in tid | |
981 | * order. | |
e02493c0 | 982 | */ |
a40c4f10 | 983 | list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, |
1d0326b1 | 984 | r_linger_osd_item) { |
2cc6128a ID |
985 | WARN_ON(!list_empty(&req->r_req_lru_item)); |
986 | __kick_linger_request(req); | |
6f6c7006 | 987 | } |
2cc6128a ID |
988 | |
989 | list_for_each_entry_safe(req, nreq, &resend_linger, r_req_lru_item) | |
990 | __kick_linger_request(req); | |
6f6c7006 SW |
991 | } |
992 | ||
f24e9980 | 993 | /* |
81b024e7 | 994 | * If the osd connection drops, we need to resubmit all requests. |
f24e9980 SW |
995 | */ |
996 | static void osd_reset(struct ceph_connection *con) | |
997 | { | |
998 | struct ceph_osd *osd = con->private; | |
999 | struct ceph_osd_client *osdc; | |
1000 | ||
1001 | if (!osd) | |
1002 | return; | |
1003 | dout("osd_reset osd%d\n", osd->o_osd); | |
1004 | osdc = osd->o_osdc; | |
f24e9980 | 1005 | down_read(&osdc->map_sem); |
83aff95e SW |
1006 | mutex_lock(&osdc->request_mutex); |
1007 | __kick_osd_requests(osdc, osd); | |
f9d25199 | 1008 | __send_queued(osdc); |
83aff95e | 1009 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1010 | up_read(&osdc->map_sem); |
1011 | } | |
1012 | ||
1013 | /* | |
1014 | * Track open sessions with osds. | |
1015 | */ | |
e10006f8 | 1016 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
1017 | { |
1018 | struct ceph_osd *osd; | |
1019 | ||
1020 | osd = kzalloc(sizeof(*osd), GFP_NOFS); | |
1021 | if (!osd) | |
1022 | return NULL; | |
1023 | ||
1024 | atomic_set(&osd->o_ref, 1); | |
1025 | osd->o_osdc = osdc; | |
e10006f8 | 1026 | osd->o_osd = onum; |
f407731d | 1027 | RB_CLEAR_NODE(&osd->o_node); |
f24e9980 | 1028 | INIT_LIST_HEAD(&osd->o_requests); |
a40c4f10 | 1029 | INIT_LIST_HEAD(&osd->o_linger_requests); |
f5a2041b | 1030 | INIT_LIST_HEAD(&osd->o_osd_lru); |
f24e9980 SW |
1031 | osd->o_incarnation = 1; |
1032 | ||
b7a9e5dd | 1033 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 1034 | |
422d2cb8 | 1035 | INIT_LIST_HEAD(&osd->o_keepalive_item); |
f24e9980 SW |
1036 | return osd; |
1037 | } | |
1038 | ||
1039 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
1040 | { | |
1041 | if (atomic_inc_not_zero(&osd->o_ref)) { | |
1042 | dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, | |
1043 | atomic_read(&osd->o_ref)); | |
1044 | return osd; | |
1045 | } else { | |
1046 | dout("get_osd %p FAIL\n", osd); | |
1047 | return NULL; | |
1048 | } | |
1049 | } | |
1050 | ||
1051 | static void put_osd(struct ceph_osd *osd) | |
1052 | { | |
1053 | dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), | |
1054 | atomic_read(&osd->o_ref) - 1); | |
b28ec2f3 | 1055 | if (atomic_dec_and_test(&osd->o_ref)) { |
79494d1b SW |
1056 | struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; |
1057 | ||
b28ec2f3 ID |
1058 | if (osd->o_auth.authorizer) |
1059 | ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); | |
f24e9980 | 1060 | kfree(osd); |
79494d1b | 1061 | } |
f24e9980 SW |
1062 | } |
1063 | ||
1064 | /* | |
1065 | * remove an osd from our map | |
1066 | */ | |
f5a2041b | 1067 | static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 1068 | { |
7eb71e03 | 1069 | dout("%s %p osd%d\n", __func__, osd, osd->o_osd); |
cc9f1f51 ID |
1070 | WARN_ON(!list_empty(&osd->o_requests)); |
1071 | WARN_ON(!list_empty(&osd->o_linger_requests)); | |
7c6e6fc5 | 1072 | |
f5a2041b | 1073 | list_del_init(&osd->o_osd_lru); |
7eb71e03 ID |
1074 | rb_erase(&osd->o_node, &osdc->osds); |
1075 | RB_CLEAR_NODE(&osd->o_node); | |
1076 | } | |
1077 | ||
1078 | static void remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) | |
1079 | { | |
1080 | dout("%s %p osd%d\n", __func__, osd, osd->o_osd); | |
1081 | ||
1082 | if (!RB_EMPTY_NODE(&osd->o_node)) { | |
1083 | ceph_con_close(&osd->o_con); | |
1084 | __remove_osd(osdc, osd); | |
1085 | put_osd(osd); | |
1086 | } | |
f24e9980 SW |
1087 | } |
1088 | ||
aca420bc SW |
1089 | static void remove_all_osds(struct ceph_osd_client *osdc) |
1090 | { | |
048a9d2d | 1091 | dout("%s %p\n", __func__, osdc); |
aca420bc SW |
1092 | mutex_lock(&osdc->request_mutex); |
1093 | while (!RB_EMPTY_ROOT(&osdc->osds)) { | |
1094 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
1095 | struct ceph_osd, o_node); | |
7eb71e03 | 1096 | remove_osd(osdc, osd); |
aca420bc SW |
1097 | } |
1098 | mutex_unlock(&osdc->request_mutex); | |
1099 | } | |
1100 | ||
f5a2041b YS |
1101 | static void __move_osd_to_lru(struct ceph_osd_client *osdc, |
1102 | struct ceph_osd *osd) | |
1103 | { | |
bbf37ec3 | 1104 | dout("%s %p\n", __func__, osd); |
f5a2041b | 1105 | BUG_ON(!list_empty(&osd->o_osd_lru)); |
bbf37ec3 | 1106 | |
f5a2041b | 1107 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); |
a319bf56 | 1108 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; |
f5a2041b YS |
1109 | } |
1110 | ||
bbf37ec3 ID |
1111 | static void maybe_move_osd_to_lru(struct ceph_osd_client *osdc, |
1112 | struct ceph_osd *osd) | |
1113 | { | |
1114 | dout("%s %p\n", __func__, osd); | |
1115 | ||
1116 | if (list_empty(&osd->o_requests) && | |
1117 | list_empty(&osd->o_linger_requests)) | |
1118 | __move_osd_to_lru(osdc, osd); | |
1119 | } | |
1120 | ||
f5a2041b YS |
1121 | static void __remove_osd_from_lru(struct ceph_osd *osd) |
1122 | { | |
1123 | dout("__remove_osd_from_lru %p\n", osd); | |
1124 | if (!list_empty(&osd->o_osd_lru)) | |
1125 | list_del_init(&osd->o_osd_lru); | |
1126 | } | |
1127 | ||
aca420bc | 1128 | static void remove_old_osds(struct ceph_osd_client *osdc) |
f5a2041b YS |
1129 | { |
1130 | struct ceph_osd *osd, *nosd; | |
1131 | ||
1132 | dout("__remove_old_osds %p\n", osdc); | |
1133 | mutex_lock(&osdc->request_mutex); | |
1134 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { | |
aca420bc | 1135 | if (time_before(jiffies, osd->lru_ttl)) |
f5a2041b | 1136 | break; |
7eb71e03 | 1137 | remove_osd(osdc, osd); |
f5a2041b YS |
1138 | } |
1139 | mutex_unlock(&osdc->request_mutex); | |
1140 | } | |
1141 | ||
f24e9980 SW |
1142 | /* |
1143 | * reset osd connect | |
1144 | */ | |
f5a2041b | 1145 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 1146 | { |
c3acb181 | 1147 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 1148 | |
f5a2041b | 1149 | dout("__reset_osd %p osd%d\n", osd, osd->o_osd); |
a40c4f10 YS |
1150 | if (list_empty(&osd->o_requests) && |
1151 | list_empty(&osd->o_linger_requests)) { | |
7eb71e03 | 1152 | remove_osd(osdc, osd); |
c3acb181 AE |
1153 | return -ENODEV; |
1154 | } | |
1155 | ||
1156 | peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; | |
1157 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && | |
1158 | !ceph_con_opened(&osd->o_con)) { | |
1159 | struct ceph_osd_request *req; | |
1160 | ||
0b4af2e8 ID |
1161 | dout("osd addr hasn't changed and connection never opened, " |
1162 | "letting msgr retry\n"); | |
87b315a5 SW |
1163 | /* touch each r_stamp for handle_timeout()'s benfit */ |
1164 | list_for_each_entry(req, &osd->o_requests, r_osd_item) | |
1165 | req->r_stamp = jiffies; | |
c3acb181 AE |
1166 | |
1167 | return -EAGAIN; | |
f24e9980 | 1168 | } |
c3acb181 AE |
1169 | |
1170 | ceph_con_close(&osd->o_con); | |
1171 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
1172 | osd->o_incarnation++; | |
1173 | ||
1174 | return 0; | |
f24e9980 SW |
1175 | } |
1176 | ||
1177 | static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) | |
1178 | { | |
1179 | struct rb_node **p = &osdc->osds.rb_node; | |
1180 | struct rb_node *parent = NULL; | |
1181 | struct ceph_osd *osd = NULL; | |
1182 | ||
aca420bc | 1183 | dout("__insert_osd %p osd%d\n", new, new->o_osd); |
f24e9980 SW |
1184 | while (*p) { |
1185 | parent = *p; | |
1186 | osd = rb_entry(parent, struct ceph_osd, o_node); | |
1187 | if (new->o_osd < osd->o_osd) | |
1188 | p = &(*p)->rb_left; | |
1189 | else if (new->o_osd > osd->o_osd) | |
1190 | p = &(*p)->rb_right; | |
1191 | else | |
1192 | BUG(); | |
1193 | } | |
1194 | ||
1195 | rb_link_node(&new->o_node, parent, p); | |
1196 | rb_insert_color(&new->o_node, &osdc->osds); | |
1197 | } | |
1198 | ||
1199 | static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) | |
1200 | { | |
1201 | struct ceph_osd *osd; | |
1202 | struct rb_node *n = osdc->osds.rb_node; | |
1203 | ||
1204 | while (n) { | |
1205 | osd = rb_entry(n, struct ceph_osd, o_node); | |
1206 | if (o < osd->o_osd) | |
1207 | n = n->rb_left; | |
1208 | else if (o > osd->o_osd) | |
1209 | n = n->rb_right; | |
1210 | else | |
1211 | return osd; | |
1212 | } | |
1213 | return NULL; | |
1214 | } | |
1215 | ||
422d2cb8 YS |
1216 | static void __schedule_osd_timeout(struct ceph_osd_client *osdc) |
1217 | { | |
1218 | schedule_delayed_work(&osdc->timeout_work, | |
a319bf56 | 1219 | osdc->client->options->osd_keepalive_timeout); |
422d2cb8 YS |
1220 | } |
1221 | ||
1222 | static void __cancel_osd_timeout(struct ceph_osd_client *osdc) | |
1223 | { | |
1224 | cancel_delayed_work(&osdc->timeout_work); | |
1225 | } | |
f24e9980 SW |
1226 | |
1227 | /* | |
1228 | * Register request, assign tid. If this is the first request, set up | |
1229 | * the timeout event. | |
1230 | */ | |
a40c4f10 YS |
1231 | static void __register_request(struct ceph_osd_client *osdc, |
1232 | struct ceph_osd_request *req) | |
f24e9980 | 1233 | { |
f24e9980 | 1234 | req->r_tid = ++osdc->last_tid; |
6df058c0 | 1235 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); |
77f38e0e | 1236 | dout("__register_request %p tid %lld\n", req, req->r_tid); |
f24e9980 SW |
1237 | __insert_request(osdc, req); |
1238 | ceph_osdc_get_request(req); | |
1239 | osdc->num_requests++; | |
f24e9980 | 1240 | if (osdc->num_requests == 1) { |
422d2cb8 YS |
1241 | dout(" first request, scheduling timeout\n"); |
1242 | __schedule_osd_timeout(osdc); | |
f24e9980 | 1243 | } |
a40c4f10 YS |
1244 | } |
1245 | ||
f24e9980 SW |
1246 | /* |
1247 | * called under osdc->request_mutex | |
1248 | */ | |
1249 | static void __unregister_request(struct ceph_osd_client *osdc, | |
1250 | struct ceph_osd_request *req) | |
1251 | { | |
35f9f8a0 SW |
1252 | if (RB_EMPTY_NODE(&req->r_node)) { |
1253 | dout("__unregister_request %p tid %lld not registered\n", | |
1254 | req, req->r_tid); | |
1255 | return; | |
1256 | } | |
1257 | ||
f24e9980 SW |
1258 | dout("__unregister_request %p tid %lld\n", req, req->r_tid); |
1259 | rb_erase(&req->r_node, &osdc->requests); | |
6562d661 | 1260 | RB_CLEAR_NODE(&req->r_node); |
f24e9980 SW |
1261 | osdc->num_requests--; |
1262 | ||
0ba6478d SW |
1263 | if (req->r_osd) { |
1264 | /* make sure the original request isn't in flight. */ | |
6740a845 | 1265 | ceph_msg_revoke(req->r_request); |
0ba6478d SW |
1266 | |
1267 | list_del_init(&req->r_osd_item); | |
bbf37ec3 | 1268 | maybe_move_osd_to_lru(osdc, req->r_osd); |
4f23409e | 1269 | if (list_empty(&req->r_linger_osd_item)) |
a40c4f10 | 1270 | req->r_osd = NULL; |
0ba6478d | 1271 | } |
f24e9980 | 1272 | |
7d5f2481 | 1273 | list_del_init(&req->r_req_lru_item); |
f24e9980 SW |
1274 | ceph_osdc_put_request(req); |
1275 | ||
422d2cb8 YS |
1276 | if (osdc->num_requests == 0) { |
1277 | dout(" no requests, canceling timeout\n"); | |
1278 | __cancel_osd_timeout(osdc); | |
f24e9980 SW |
1279 | } |
1280 | } | |
1281 | ||
1282 | /* | |
1283 | * Cancel a previously queued request message | |
1284 | */ | |
1285 | static void __cancel_request(struct ceph_osd_request *req) | |
1286 | { | |
6bc18876 | 1287 | if (req->r_sent && req->r_osd) { |
6740a845 | 1288 | ceph_msg_revoke(req->r_request); |
f24e9980 SW |
1289 | req->r_sent = 0; |
1290 | } | |
1291 | } | |
1292 | ||
a40c4f10 YS |
1293 | static void __register_linger_request(struct ceph_osd_client *osdc, |
1294 | struct ceph_osd_request *req) | |
1295 | { | |
af593064 ID |
1296 | dout("%s %p tid %llu\n", __func__, req, req->r_tid); |
1297 | WARN_ON(!req->r_linger); | |
1298 | ||
96e4dac6 | 1299 | ceph_osdc_get_request(req); |
a40c4f10 | 1300 | list_add_tail(&req->r_linger_item, &osdc->req_linger); |
6194ea89 | 1301 | if (req->r_osd) |
1d0326b1 | 1302 | list_add_tail(&req->r_linger_osd_item, |
6194ea89 | 1303 | &req->r_osd->o_linger_requests); |
a40c4f10 YS |
1304 | } |
1305 | ||
1306 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
1307 | struct ceph_osd_request *req) | |
1308 | { | |
af593064 ID |
1309 | WARN_ON(!req->r_linger); |
1310 | ||
1311 | if (list_empty(&req->r_linger_item)) { | |
1312 | dout("%s %p tid %llu not registered\n", __func__, req, | |
1313 | req->r_tid); | |
1314 | return; | |
1315 | } | |
1316 | ||
1317 | dout("%s %p tid %llu\n", __func__, req, req->r_tid); | |
61c74035 | 1318 | list_del_init(&req->r_linger_item); |
af593064 | 1319 | |
a40c4f10 | 1320 | if (req->r_osd) { |
1d0326b1 | 1321 | list_del_init(&req->r_linger_osd_item); |
bbf37ec3 | 1322 | maybe_move_osd_to_lru(osdc, req->r_osd); |
fbdb9190 SW |
1323 | if (list_empty(&req->r_osd_item)) |
1324 | req->r_osd = NULL; | |
a40c4f10 | 1325 | } |
96e4dac6 | 1326 | ceph_osdc_put_request(req); |
a40c4f10 YS |
1327 | } |
1328 | ||
a40c4f10 YS |
1329 | void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, |
1330 | struct ceph_osd_request *req) | |
1331 | { | |
1332 | if (!req->r_linger) { | |
1333 | dout("set_request_linger %p\n", req); | |
1334 | req->r_linger = 1; | |
a40c4f10 YS |
1335 | } |
1336 | } | |
1337 | EXPORT_SYMBOL(ceph_osdc_set_request_linger); | |
1338 | ||
d29adb34 JD |
1339 | /* |
1340 | * Returns whether a request should be blocked from being sent | |
1341 | * based on the current osdmap and osd_client settings. | |
1342 | * | |
1343 | * Caller should hold map_sem for read. | |
1344 | */ | |
1345 | static bool __req_should_be_paused(struct ceph_osd_client *osdc, | |
1346 | struct ceph_osd_request *req) | |
1347 | { | |
1348 | bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); | |
1349 | bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || | |
1350 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); | |
1351 | return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) || | |
1352 | (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr); | |
1353 | } | |
1354 | ||
17a13e40 ID |
1355 | /* |
1356 | * Calculate mapping of a request to a PG. Takes tiering into account. | |
1357 | */ | |
1358 | static int __calc_request_pg(struct ceph_osdmap *osdmap, | |
1359 | struct ceph_osd_request *req, | |
1360 | struct ceph_pg *pg_out) | |
1361 | { | |
205ee118 ID |
1362 | bool need_check_tiering; |
1363 | ||
1364 | need_check_tiering = false; | |
1365 | if (req->r_target_oloc.pool == -1) { | |
1366 | req->r_target_oloc = req->r_base_oloc; /* struct */ | |
1367 | need_check_tiering = true; | |
1368 | } | |
1369 | if (req->r_target_oid.name_len == 0) { | |
1370 | ceph_oid_copy(&req->r_target_oid, &req->r_base_oid); | |
1371 | need_check_tiering = true; | |
1372 | } | |
1373 | ||
1374 | if (need_check_tiering && | |
1375 | (req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { | |
17a13e40 ID |
1376 | struct ceph_pg_pool_info *pi; |
1377 | ||
205ee118 | 1378 | pi = ceph_pg_pool_by_id(osdmap, req->r_target_oloc.pool); |
17a13e40 ID |
1379 | if (pi) { |
1380 | if ((req->r_flags & CEPH_OSD_FLAG_READ) && | |
1381 | pi->read_tier >= 0) | |
205ee118 | 1382 | req->r_target_oloc.pool = pi->read_tier; |
17a13e40 ID |
1383 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && |
1384 | pi->write_tier >= 0) | |
205ee118 | 1385 | req->r_target_oloc.pool = pi->write_tier; |
17a13e40 ID |
1386 | } |
1387 | /* !pi is caught in ceph_oloc_oid_to_pg() */ | |
1388 | } | |
1389 | ||
205ee118 ID |
1390 | return ceph_oloc_oid_to_pg(osdmap, &req->r_target_oloc, |
1391 | &req->r_target_oid, pg_out); | |
17a13e40 ID |
1392 | } |
1393 | ||
f671b581 ID |
1394 | static void __enqueue_request(struct ceph_osd_request *req) |
1395 | { | |
1396 | struct ceph_osd_client *osdc = req->r_osdc; | |
1397 | ||
1398 | dout("%s %p tid %llu to osd%d\n", __func__, req, req->r_tid, | |
1399 | req->r_osd ? req->r_osd->o_osd : -1); | |
1400 | ||
1401 | if (req->r_osd) { | |
1402 | __remove_osd_from_lru(req->r_osd); | |
1403 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); | |
1404 | list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); | |
1405 | } else { | |
1406 | list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); | |
1407 | } | |
1408 | } | |
1409 | ||
f24e9980 SW |
1410 | /* |
1411 | * Pick an osd (the first 'up' osd in the pg), allocate the osd struct | |
1412 | * (as needed), and set the request r_osd appropriately. If there is | |
25985edc | 1413 | * no up osd, set r_osd to NULL. Move the request to the appropriate list |
6f6c7006 | 1414 | * (unsent, homeless) or leave on in-flight lru. |
f24e9980 SW |
1415 | * |
1416 | * Return 0 if unchanged, 1 if changed, or negative on error. | |
1417 | * | |
1418 | * Caller should hold map_sem for read and request_mutex. | |
1419 | */ | |
6f6c7006 | 1420 | static int __map_request(struct ceph_osd_client *osdc, |
38d6453c | 1421 | struct ceph_osd_request *req, int force_resend) |
f24e9980 | 1422 | { |
5b191d99 | 1423 | struct ceph_pg pgid; |
d85b7056 | 1424 | int acting[CEPH_PG_MAX_SIZE]; |
8008ab10 | 1425 | int num, o; |
f24e9980 | 1426 | int err; |
d29adb34 | 1427 | bool was_paused; |
f24e9980 | 1428 | |
6f6c7006 | 1429 | dout("map_request %p tid %lld\n", req, req->r_tid); |
17a13e40 ID |
1430 | |
1431 | err = __calc_request_pg(osdc->osdmap, req, &pgid); | |
6f6c7006 SW |
1432 | if (err) { |
1433 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f24e9980 | 1434 | return err; |
6f6c7006 | 1435 | } |
7740a42f SW |
1436 | req->r_pgid = pgid; |
1437 | ||
8008ab10 ID |
1438 | num = ceph_calc_pg_acting(osdc->osdmap, pgid, acting, &o); |
1439 | if (num < 0) | |
1440 | num = 0; | |
f24e9980 | 1441 | |
d29adb34 JD |
1442 | was_paused = req->r_paused; |
1443 | req->r_paused = __req_should_be_paused(osdc, req); | |
1444 | if (was_paused && !req->r_paused) | |
1445 | force_resend = 1; | |
1446 | ||
38d6453c SW |
1447 | if ((!force_resend && |
1448 | req->r_osd && req->r_osd->o_osd == o && | |
d85b7056 SW |
1449 | req->r_sent >= req->r_osd->o_incarnation && |
1450 | req->r_num_pg_osds == num && | |
1451 | memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || | |
d29adb34 JD |
1452 | (req->r_osd == NULL && o == -1) || |
1453 | req->r_paused) | |
f24e9980 SW |
1454 | return 0; /* no change */ |
1455 | ||
5b191d99 SW |
1456 | dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", |
1457 | req->r_tid, pgid.pool, pgid.seed, o, | |
f24e9980 SW |
1458 | req->r_osd ? req->r_osd->o_osd : -1); |
1459 | ||
d85b7056 SW |
1460 | /* record full pg acting set */ |
1461 | memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); | |
1462 | req->r_num_pg_osds = num; | |
1463 | ||
f24e9980 SW |
1464 | if (req->r_osd) { |
1465 | __cancel_request(req); | |
1466 | list_del_init(&req->r_osd_item); | |
a390de02 | 1467 | list_del_init(&req->r_linger_osd_item); |
f24e9980 SW |
1468 | req->r_osd = NULL; |
1469 | } | |
1470 | ||
1471 | req->r_osd = __lookup_osd(osdc, o); | |
1472 | if (!req->r_osd && o >= 0) { | |
c99eb1c7 | 1473 | err = -ENOMEM; |
e10006f8 | 1474 | req->r_osd = create_osd(osdc, o); |
6f6c7006 SW |
1475 | if (!req->r_osd) { |
1476 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
c99eb1c7 | 1477 | goto out; |
6f6c7006 | 1478 | } |
f24e9980 | 1479 | |
6f6c7006 | 1480 | dout("map_request osd %p is osd%d\n", req->r_osd, o); |
f24e9980 SW |
1481 | __insert_osd(osdc, req->r_osd); |
1482 | ||
b7a9e5dd SW |
1483 | ceph_con_open(&req->r_osd->o_con, |
1484 | CEPH_ENTITY_TYPE_OSD, o, | |
1485 | &osdc->osdmap->osd_addr[o]); | |
f24e9980 SW |
1486 | } |
1487 | ||
f671b581 | 1488 | __enqueue_request(req); |
d85b7056 | 1489 | err = 1; /* osd or pg changed */ |
f24e9980 SW |
1490 | |
1491 | out: | |
f24e9980 SW |
1492 | return err; |
1493 | } | |
1494 | ||
1495 | /* | |
1496 | * caller should hold map_sem (for read) and request_mutex | |
1497 | */ | |
56e925b6 SW |
1498 | static void __send_request(struct ceph_osd_client *osdc, |
1499 | struct ceph_osd_request *req) | |
f24e9980 | 1500 | { |
1b83bef2 | 1501 | void *p; |
f24e9980 | 1502 | |
1b83bef2 SW |
1503 | dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", |
1504 | req, req->r_tid, req->r_osd->o_osd, req->r_flags, | |
1505 | (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); | |
1506 | ||
1507 | /* fill in message content that changes each time we send it */ | |
1508 | put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); | |
1509 | put_unaligned_le32(req->r_flags, req->r_request_flags); | |
205ee118 | 1510 | put_unaligned_le64(req->r_target_oloc.pool, req->r_request_pool); |
1b83bef2 SW |
1511 | p = req->r_request_pgid; |
1512 | ceph_encode_64(&p, req->r_pgid.pool); | |
1513 | ceph_encode_32(&p, req->r_pgid.seed); | |
1514 | put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ | |
1515 | memcpy(req->r_request_reassert_version, &req->r_reassert_version, | |
1516 | sizeof(req->r_reassert_version)); | |
2169aea6 | 1517 | |
3dd72fc0 | 1518 | req->r_stamp = jiffies; |
07a27e22 | 1519 | list_move_tail(&req->r_req_lru_item, &osdc->req_lru); |
f24e9980 SW |
1520 | |
1521 | ceph_msg_get(req->r_request); /* send consumes a ref */ | |
26be8808 | 1522 | |
f24e9980 | 1523 | req->r_sent = req->r_osd->o_incarnation; |
26be8808 AE |
1524 | |
1525 | ceph_con_send(&req->r_osd->o_con, req->r_request); | |
f24e9980 SW |
1526 | } |
1527 | ||
6f6c7006 SW |
1528 | /* |
1529 | * Send any requests in the queue (req_unsent). | |
1530 | */ | |
f9d25199 | 1531 | static void __send_queued(struct ceph_osd_client *osdc) |
6f6c7006 SW |
1532 | { |
1533 | struct ceph_osd_request *req, *tmp; | |
1534 | ||
f9d25199 AE |
1535 | dout("__send_queued\n"); |
1536 | list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) | |
6f6c7006 | 1537 | __send_request(osdc, req); |
6f6c7006 SW |
1538 | } |
1539 | ||
0bbfdfe8 ID |
1540 | /* |
1541 | * Caller should hold map_sem for read and request_mutex. | |
1542 | */ | |
1543 | static int __ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
1544 | struct ceph_osd_request *req, | |
1545 | bool nofail) | |
1546 | { | |
1547 | int rc; | |
1548 | ||
1549 | __register_request(osdc, req); | |
1550 | req->r_sent = 0; | |
1551 | req->r_got_reply = 0; | |
1552 | rc = __map_request(osdc, req, 0); | |
1553 | if (rc < 0) { | |
1554 | if (nofail) { | |
1555 | dout("osdc_start_request failed map, " | |
1556 | " will retry %lld\n", req->r_tid); | |
1557 | rc = 0; | |
1558 | } else { | |
1559 | __unregister_request(osdc, req); | |
1560 | } | |
1561 | return rc; | |
1562 | } | |
1563 | ||
1564 | if (req->r_osd == NULL) { | |
1565 | dout("send_request %p no up osds in pg\n", req); | |
1566 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1567 | } else { | |
1568 | __send_queued(osdc); | |
1569 | } | |
1570 | ||
1571 | return 0; | |
1572 | } | |
1573 | ||
f24e9980 SW |
1574 | /* |
1575 | * Timeout callback, called every N seconds when 1 or more osd | |
1576 | * requests has been active for more than N seconds. When this | |
1577 | * happens, we ping all OSDs with requests who have timed out to | |
1578 | * ensure any communications channel reset is detected. Reset the | |
1579 | * request timeouts another N seconds in the future as we go. | |
1580 | * Reschedule the timeout event another N seconds in future (unless | |
1581 | * there are no open requests). | |
1582 | */ | |
1583 | static void handle_timeout(struct work_struct *work) | |
1584 | { | |
1585 | struct ceph_osd_client *osdc = | |
1586 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
a319bf56 | 1587 | struct ceph_options *opts = osdc->client->options; |
83aff95e | 1588 | struct ceph_osd_request *req; |
f24e9980 | 1589 | struct ceph_osd *osd; |
422d2cb8 | 1590 | struct list_head slow_osds; |
f24e9980 SW |
1591 | dout("timeout\n"); |
1592 | down_read(&osdc->map_sem); | |
1593 | ||
1594 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1595 | ||
1596 | mutex_lock(&osdc->request_mutex); | |
f24e9980 | 1597 | |
422d2cb8 YS |
1598 | /* |
1599 | * ping osds that are a bit slow. this ensures that if there | |
1600 | * is a break in the TCP connection we will notice, and reopen | |
1601 | * a connection with that osd (from the fault callback). | |
1602 | */ | |
1603 | INIT_LIST_HEAD(&slow_osds); | |
1604 | list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { | |
a319bf56 ID |
1605 | if (time_before(jiffies, |
1606 | req->r_stamp + opts->osd_keepalive_timeout)) | |
422d2cb8 YS |
1607 | break; |
1608 | ||
1609 | osd = req->r_osd; | |
1610 | BUG_ON(!osd); | |
1611 | dout(" tid %llu is slow, will send keepalive on osd%d\n", | |
f24e9980 | 1612 | req->r_tid, osd->o_osd); |
422d2cb8 YS |
1613 | list_move_tail(&osd->o_keepalive_item, &slow_osds); |
1614 | } | |
1615 | while (!list_empty(&slow_osds)) { | |
1616 | osd = list_entry(slow_osds.next, struct ceph_osd, | |
1617 | o_keepalive_item); | |
1618 | list_del_init(&osd->o_keepalive_item); | |
f24e9980 SW |
1619 | ceph_con_keepalive(&osd->o_con); |
1620 | } | |
1621 | ||
422d2cb8 | 1622 | __schedule_osd_timeout(osdc); |
f9d25199 | 1623 | __send_queued(osdc); |
f24e9980 | 1624 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1625 | up_read(&osdc->map_sem); |
1626 | } | |
1627 | ||
f5a2041b YS |
1628 | static void handle_osds_timeout(struct work_struct *work) |
1629 | { | |
1630 | struct ceph_osd_client *osdc = | |
1631 | container_of(work, struct ceph_osd_client, | |
1632 | osds_timeout_work.work); | |
a319bf56 | 1633 | unsigned long delay = osdc->client->options->osd_idle_ttl / 4; |
f5a2041b YS |
1634 | |
1635 | dout("osds timeout\n"); | |
1636 | down_read(&osdc->map_sem); | |
aca420bc | 1637 | remove_old_osds(osdc); |
f5a2041b YS |
1638 | up_read(&osdc->map_sem); |
1639 | ||
1640 | schedule_delayed_work(&osdc->osds_timeout_work, | |
1641 | round_jiffies_relative(delay)); | |
1642 | } | |
1643 | ||
205ee118 ID |
1644 | static int ceph_oloc_decode(void **p, void *end, |
1645 | struct ceph_object_locator *oloc) | |
1646 | { | |
1647 | u8 struct_v, struct_cv; | |
1648 | u32 len; | |
1649 | void *struct_end; | |
1650 | int ret = 0; | |
1651 | ||
1652 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
1653 | struct_v = ceph_decode_8(p); | |
1654 | struct_cv = ceph_decode_8(p); | |
1655 | if (struct_v < 3) { | |
1656 | pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", | |
1657 | struct_v, struct_cv); | |
1658 | goto e_inval; | |
1659 | } | |
1660 | if (struct_cv > 6) { | |
1661 | pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", | |
1662 | struct_v, struct_cv); | |
1663 | goto e_inval; | |
1664 | } | |
1665 | len = ceph_decode_32(p); | |
1666 | ceph_decode_need(p, end, len, e_inval); | |
1667 | struct_end = *p + len; | |
1668 | ||
1669 | oloc->pool = ceph_decode_64(p); | |
1670 | *p += 4; /* skip preferred */ | |
1671 | ||
1672 | len = ceph_decode_32(p); | |
1673 | if (len > 0) { | |
1674 | pr_warn("ceph_object_locator::key is set\n"); | |
1675 | goto e_inval; | |
1676 | } | |
1677 | ||
1678 | if (struct_v >= 5) { | |
1679 | len = ceph_decode_32(p); | |
1680 | if (len > 0) { | |
1681 | pr_warn("ceph_object_locator::nspace is set\n"); | |
1682 | goto e_inval; | |
1683 | } | |
1684 | } | |
1685 | ||
1686 | if (struct_v >= 6) { | |
1687 | s64 hash = ceph_decode_64(p); | |
1688 | if (hash != -1) { | |
1689 | pr_warn("ceph_object_locator::hash is set\n"); | |
1690 | goto e_inval; | |
1691 | } | |
1692 | } | |
1693 | ||
1694 | /* skip the rest */ | |
1695 | *p = struct_end; | |
1696 | out: | |
1697 | return ret; | |
1698 | ||
1699 | e_inval: | |
1700 | ret = -EINVAL; | |
1701 | goto out; | |
1702 | } | |
1703 | ||
1704 | static int ceph_redirect_decode(void **p, void *end, | |
1705 | struct ceph_request_redirect *redir) | |
1706 | { | |
1707 | u8 struct_v, struct_cv; | |
1708 | u32 len; | |
1709 | void *struct_end; | |
1710 | int ret; | |
1711 | ||
1712 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
1713 | struct_v = ceph_decode_8(p); | |
1714 | struct_cv = ceph_decode_8(p); | |
1715 | if (struct_cv > 1) { | |
1716 | pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", | |
1717 | struct_v, struct_cv); | |
1718 | goto e_inval; | |
1719 | } | |
1720 | len = ceph_decode_32(p); | |
1721 | ceph_decode_need(p, end, len, e_inval); | |
1722 | struct_end = *p + len; | |
1723 | ||
1724 | ret = ceph_oloc_decode(p, end, &redir->oloc); | |
1725 | if (ret) | |
1726 | goto out; | |
1727 | ||
1728 | len = ceph_decode_32(p); | |
1729 | if (len > 0) { | |
1730 | pr_warn("ceph_request_redirect::object_name is set\n"); | |
1731 | goto e_inval; | |
1732 | } | |
1733 | ||
1734 | len = ceph_decode_32(p); | |
1735 | *p += len; /* skip osd_instructions */ | |
1736 | ||
1737 | /* skip the rest */ | |
1738 | *p = struct_end; | |
1739 | out: | |
1740 | return ret; | |
1741 | ||
1742 | e_inval: | |
1743 | ret = -EINVAL; | |
1744 | goto out; | |
1745 | } | |
1746 | ||
25845472 SW |
1747 | static void complete_request(struct ceph_osd_request *req) |
1748 | { | |
25845472 SW |
1749 | complete_all(&req->r_safe_completion); /* fsync waiter */ |
1750 | } | |
1751 | ||
f24e9980 SW |
1752 | /* |
1753 | * handle osd op reply. either call the callback if it is specified, | |
1754 | * or do the completion to wake up the waiting thread. | |
1755 | */ | |
70cf052d | 1756 | static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg) |
f24e9980 | 1757 | { |
1b83bef2 | 1758 | void *p, *end; |
f24e9980 | 1759 | struct ceph_osd_request *req; |
205ee118 | 1760 | struct ceph_request_redirect redir; |
f24e9980 | 1761 | u64 tid; |
1b83bef2 | 1762 | int object_len; |
79528734 AE |
1763 | unsigned int numops; |
1764 | int payload_len, flags; | |
0ceed5db | 1765 | s32 result; |
1b83bef2 SW |
1766 | s32 retry_attempt; |
1767 | struct ceph_pg pg; | |
1768 | int err; | |
1769 | u32 reassert_epoch; | |
1770 | u64 reassert_version; | |
1771 | u32 osdmap_epoch; | |
0d5af164 | 1772 | int already_completed; |
9fc6e064 | 1773 | u32 bytes; |
b0b31a8f | 1774 | u8 decode_redir; |
79528734 | 1775 | unsigned int i; |
f24e9980 | 1776 | |
6df058c0 | 1777 | tid = le64_to_cpu(msg->hdr.tid); |
1b83bef2 SW |
1778 | dout("handle_reply %p tid %llu\n", msg, tid); |
1779 | ||
1780 | p = msg->front.iov_base; | |
1781 | end = p + msg->front.iov_len; | |
1782 | ||
1783 | ceph_decode_need(&p, end, 4, bad); | |
1784 | object_len = ceph_decode_32(&p); | |
1785 | ceph_decode_need(&p, end, object_len, bad); | |
1786 | p += object_len; | |
1787 | ||
ef4859d6 | 1788 | err = ceph_decode_pgid(&p, end, &pg); |
1b83bef2 | 1789 | if (err) |
f24e9980 | 1790 | goto bad; |
1b83bef2 SW |
1791 | |
1792 | ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); | |
1793 | flags = ceph_decode_64(&p); | |
1794 | result = ceph_decode_32(&p); | |
1795 | reassert_epoch = ceph_decode_32(&p); | |
1796 | reassert_version = ceph_decode_64(&p); | |
1797 | osdmap_epoch = ceph_decode_32(&p); | |
1798 | ||
f24e9980 | 1799 | /* lookup */ |
ff513ace | 1800 | down_read(&osdc->map_sem); |
f24e9980 SW |
1801 | mutex_lock(&osdc->request_mutex); |
1802 | req = __lookup_request(osdc, tid); | |
1803 | if (req == NULL) { | |
1804 | dout("handle_reply tid %llu dne\n", tid); | |
8058fd45 | 1805 | goto bad_mutex; |
f24e9980 SW |
1806 | } |
1807 | ceph_osdc_get_request(req); | |
1b83bef2 SW |
1808 | |
1809 | dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, | |
1810 | req, result); | |
1811 | ||
18741196 | 1812 | ceph_decode_need(&p, end, 4, bad_put); |
1b83bef2 SW |
1813 | numops = ceph_decode_32(&p); |
1814 | if (numops > CEPH_OSD_MAX_OP) | |
1815 | goto bad_put; | |
1816 | if (numops != req->r_num_ops) | |
1817 | goto bad_put; | |
1818 | payload_len = 0; | |
18741196 | 1819 | ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); |
1b83bef2 SW |
1820 | for (i = 0; i < numops; i++) { |
1821 | struct ceph_osd_op *op = p; | |
1822 | int len; | |
1823 | ||
1824 | len = le32_to_cpu(op->payload_len); | |
7665d85b | 1825 | req->r_ops[i].outdata_len = len; |
1b83bef2 SW |
1826 | dout(" op %d has %d bytes\n", i, len); |
1827 | payload_len += len; | |
1828 | p += sizeof(*op); | |
1829 | } | |
9fc6e064 AE |
1830 | bytes = le32_to_cpu(msg->hdr.data_len); |
1831 | if (payload_len != bytes) { | |
b9a67899 JP |
1832 | pr_warn("sum of op payload lens %d != data_len %d\n", |
1833 | payload_len, bytes); | |
1b83bef2 SW |
1834 | goto bad_put; |
1835 | } | |
1836 | ||
18741196 | 1837 | ceph_decode_need(&p, end, 4 + numops * 4, bad_put); |
1b83bef2 SW |
1838 | retry_attempt = ceph_decode_32(&p); |
1839 | for (i = 0; i < numops; i++) | |
7665d85b | 1840 | req->r_ops[i].rval = ceph_decode_32(&p); |
f24e9980 | 1841 | |
205ee118 ID |
1842 | if (le16_to_cpu(msg->hdr.version) >= 6) { |
1843 | p += 8 + 4; /* skip replay_version */ | |
1844 | p += 8; /* skip user_version */ | |
eb845ff1 | 1845 | |
b0b31a8f ID |
1846 | if (le16_to_cpu(msg->hdr.version) >= 7) |
1847 | ceph_decode_8_safe(&p, end, decode_redir, bad_put); | |
1848 | else | |
1849 | decode_redir = 1; | |
1850 | } else { | |
1851 | decode_redir = 0; | |
1852 | } | |
1853 | ||
1854 | if (decode_redir) { | |
205ee118 ID |
1855 | err = ceph_redirect_decode(&p, end, &redir); |
1856 | if (err) | |
1857 | goto bad_put; | |
1858 | } else { | |
1859 | redir.oloc.pool = -1; | |
1860 | } | |
f24e9980 | 1861 | |
205ee118 ID |
1862 | if (redir.oloc.pool != -1) { |
1863 | dout("redirect pool %lld\n", redir.oloc.pool); | |
1864 | ||
1865 | __unregister_request(osdc, req); | |
205ee118 ID |
1866 | |
1867 | req->r_target_oloc = redir.oloc; /* struct */ | |
1868 | ||
1869 | /* | |
1870 | * Start redirect requests with nofail=true. If | |
1871 | * mapping fails, request will end up on the notarget | |
1872 | * list, waiting for the new osdmap (which can take | |
1873 | * a while), even though the original request mapped | |
1874 | * successfully. In the future we might want to follow | |
1875 | * original request's nofail setting here. | |
1876 | */ | |
ff513ace | 1877 | err = __ceph_osdc_start_request(osdc, req, true); |
205ee118 ID |
1878 | BUG_ON(err); |
1879 | ||
ff513ace | 1880 | goto out_unlock; |
205ee118 ID |
1881 | } |
1882 | ||
1883 | already_completed = req->r_got_reply; | |
1884 | if (!req->r_got_reply) { | |
1b83bef2 | 1885 | req->r_result = result; |
f24e9980 SW |
1886 | dout("handle_reply result %d bytes %d\n", req->r_result, |
1887 | bytes); | |
1888 | if (req->r_result == 0) | |
1889 | req->r_result = bytes; | |
1890 | ||
1891 | /* in case this is a write and we need to replay, */ | |
1b83bef2 SW |
1892 | req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); |
1893 | req->r_reassert_version.version = cpu_to_le64(reassert_version); | |
f24e9980 SW |
1894 | |
1895 | req->r_got_reply = 1; | |
1896 | } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { | |
1897 | dout("handle_reply tid %llu dup ack\n", tid); | |
ff513ace | 1898 | goto out_unlock; |
f24e9980 SW |
1899 | } |
1900 | ||
1901 | dout("handle_reply tid %llu flags %d\n", tid, flags); | |
1902 | ||
a40c4f10 YS |
1903 | if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) |
1904 | __register_linger_request(osdc, req); | |
1905 | ||
f24e9980 | 1906 | /* either this is a read, or we got the safe response */ |
0ceed5db SW |
1907 | if (result < 0 || |
1908 | (flags & CEPH_OSD_FLAG_ONDISK) || | |
f24e9980 SW |
1909 | ((flags & CEPH_OSD_FLAG_WRITE) == 0)) |
1910 | __unregister_request(osdc, req); | |
1911 | ||
1912 | mutex_unlock(&osdc->request_mutex); | |
ff513ace | 1913 | up_read(&osdc->map_sem); |
f24e9980 | 1914 | |
eb845ff1 | 1915 | if (!already_completed) { |
61c5d6bf YZ |
1916 | if (req->r_unsafe_callback && |
1917 | result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) | |
1918 | req->r_unsafe_callback(req, true); | |
eb845ff1 YZ |
1919 | if (req->r_callback) |
1920 | req->r_callback(req, msg); | |
1921 | else | |
1922 | complete_all(&req->r_completion); | |
1923 | } | |
f24e9980 | 1924 | |
61c5d6bf YZ |
1925 | if (flags & CEPH_OSD_FLAG_ONDISK) { |
1926 | if (req->r_unsafe_callback && already_completed) | |
1927 | req->r_unsafe_callback(req, false); | |
25845472 | 1928 | complete_request(req); |
61c5d6bf | 1929 | } |
f24e9980 | 1930 | |
ff513ace | 1931 | out: |
a40c4f10 | 1932 | dout("req=%p req->r_linger=%d\n", req, req->r_linger); |
f24e9980 SW |
1933 | ceph_osdc_put_request(req); |
1934 | return; | |
ff513ace ID |
1935 | out_unlock: |
1936 | mutex_unlock(&osdc->request_mutex); | |
1937 | up_read(&osdc->map_sem); | |
1938 | goto out; | |
f24e9980 | 1939 | |
1b83bef2 | 1940 | bad_put: |
37c89bde LW |
1941 | req->r_result = -EIO; |
1942 | __unregister_request(osdc, req); | |
1943 | if (req->r_callback) | |
1944 | req->r_callback(req, msg); | |
1945 | else | |
1946 | complete_all(&req->r_completion); | |
1947 | complete_request(req); | |
1b83bef2 | 1948 | ceph_osdc_put_request(req); |
8058fd45 AE |
1949 | bad_mutex: |
1950 | mutex_unlock(&osdc->request_mutex); | |
ff513ace | 1951 | up_read(&osdc->map_sem); |
f24e9980 | 1952 | bad: |
1b83bef2 SW |
1953 | pr_err("corrupt osd_op_reply got %d %d\n", |
1954 | (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); | |
9ec7cab1 | 1955 | ceph_msg_dump(msg); |
f24e9980 SW |
1956 | } |
1957 | ||
6f6c7006 | 1958 | static void reset_changed_osds(struct ceph_osd_client *osdc) |
f24e9980 | 1959 | { |
f24e9980 | 1960 | struct rb_node *p, *n; |
f24e9980 | 1961 | |
7eb71e03 | 1962 | dout("%s %p\n", __func__, osdc); |
6f6c7006 SW |
1963 | for (p = rb_first(&osdc->osds); p; p = n) { |
1964 | struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); | |
f24e9980 | 1965 | |
6f6c7006 SW |
1966 | n = rb_next(p); |
1967 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
1968 | memcmp(&osd->o_con.peer_addr, | |
1969 | ceph_osd_addr(osdc->osdmap, | |
1970 | osd->o_osd), | |
1971 | sizeof(struct ceph_entity_addr)) != 0) | |
1972 | __reset_osd(osdc, osd); | |
f24e9980 | 1973 | } |
422d2cb8 YS |
1974 | } |
1975 | ||
1976 | /* | |
6f6c7006 SW |
1977 | * Requeue requests whose mapping to an OSD has changed. If requests map to |
1978 | * no osd, request a new map. | |
422d2cb8 | 1979 | * |
e6d50f67 | 1980 | * Caller should hold map_sem for read. |
422d2cb8 | 1981 | */ |
9a1ea2db JD |
1982 | static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, |
1983 | bool force_resend_writes) | |
422d2cb8 | 1984 | { |
a40c4f10 | 1985 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
1986 | struct rb_node *p; |
1987 | int needmap = 0; | |
1988 | int err; | |
9a1ea2db | 1989 | bool force_resend_req; |
422d2cb8 | 1990 | |
9a1ea2db JD |
1991 | dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", |
1992 | force_resend_writes ? " (force resend writes)" : ""); | |
422d2cb8 | 1993 | mutex_lock(&osdc->request_mutex); |
6194ea89 | 1994 | for (p = rb_first(&osdc->requests); p; ) { |
6f6c7006 | 1995 | req = rb_entry(p, struct ceph_osd_request, r_node); |
6194ea89 | 1996 | p = rb_next(p); |
ab60b16d AE |
1997 | |
1998 | /* | |
1999 | * For linger requests that have not yet been | |
2000 | * registered, move them to the linger list; they'll | |
2001 | * be sent to the osd in the loop below. Unregister | |
2002 | * the request before re-registering it as a linger | |
2003 | * request to ensure the __map_request() below | |
2004 | * will decide it needs to be sent. | |
2005 | */ | |
2006 | if (req->r_linger && list_empty(&req->r_linger_item)) { | |
2007 | dout("%p tid %llu restart on osd%d\n", | |
2008 | req, req->r_tid, | |
2009 | req->r_osd ? req->r_osd->o_osd : -1); | |
96e4dac6 | 2010 | ceph_osdc_get_request(req); |
ab60b16d AE |
2011 | __unregister_request(osdc, req); |
2012 | __register_linger_request(osdc, req); | |
96e4dac6 | 2013 | ceph_osdc_put_request(req); |
ab60b16d AE |
2014 | continue; |
2015 | } | |
2016 | ||
9a1ea2db JD |
2017 | force_resend_req = force_resend || |
2018 | (force_resend_writes && | |
2019 | req->r_flags & CEPH_OSD_FLAG_WRITE); | |
2020 | err = __map_request(osdc, req, force_resend_req); | |
6f6c7006 SW |
2021 | if (err < 0) |
2022 | continue; /* error */ | |
2023 | if (req->r_osd == NULL) { | |
2024 | dout("%p tid %llu maps to no osd\n", req, req->r_tid); | |
2025 | needmap++; /* request a newer map */ | |
2026 | } else if (err > 0) { | |
6194ea89 SW |
2027 | if (!req->r_linger) { |
2028 | dout("%p tid %llu requeued on osd%d\n", req, | |
2029 | req->r_tid, | |
2030 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 2031 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
6194ea89 SW |
2032 | } |
2033 | } | |
a40c4f10 YS |
2034 | } |
2035 | ||
2036 | list_for_each_entry_safe(req, nreq, &osdc->req_linger, | |
2037 | r_linger_item) { | |
2038 | dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); | |
2039 | ||
9a1ea2db JD |
2040 | err = __map_request(osdc, req, |
2041 | force_resend || force_resend_writes); | |
ab60b16d | 2042 | dout("__map_request returned %d\n", err); |
a40c4f10 YS |
2043 | if (err < 0) |
2044 | continue; /* hrm! */ | |
b0494532 ID |
2045 | if (req->r_osd == NULL || err > 0) { |
2046 | if (req->r_osd == NULL) { | |
2047 | dout("lingering %p tid %llu maps to no osd\n", | |
2048 | req, req->r_tid); | |
2049 | /* | |
2050 | * A homeless lingering request makes | |
2051 | * no sense, as it's job is to keep | |
2052 | * a particular OSD connection open. | |
2053 | * Request a newer map and kick the | |
2054 | * request, knowing that it won't be | |
2055 | * resent until we actually get a map | |
2056 | * that can tell us where to send it. | |
2057 | */ | |
2058 | needmap++; | |
2059 | } | |
a40c4f10 | 2060 | |
b0494532 ID |
2061 | dout("kicking lingering %p tid %llu osd%d\n", req, |
2062 | req->r_tid, req->r_osd ? req->r_osd->o_osd : -1); | |
2063 | __register_request(osdc, req); | |
2064 | __unregister_linger_request(osdc, req); | |
2065 | } | |
6f6c7006 | 2066 | } |
14d2f38d | 2067 | reset_changed_osds(osdc); |
f24e9980 SW |
2068 | mutex_unlock(&osdc->request_mutex); |
2069 | ||
2070 | if (needmap) { | |
2071 | dout("%d requests for down osds, need new map\n", needmap); | |
2072 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
2073 | } | |
422d2cb8 | 2074 | } |
6f6c7006 SW |
2075 | |
2076 | ||
f24e9980 SW |
2077 | /* |
2078 | * Process updated osd map. | |
2079 | * | |
2080 | * The message contains any number of incremental and full maps, normally | |
2081 | * indicating some sort of topology change in the cluster. Kick requests | |
2082 | * off to different OSDs as needed. | |
2083 | */ | |
2084 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
2085 | { | |
2086 | void *p, *end, *next; | |
2087 | u32 nr_maps, maplen; | |
2088 | u32 epoch; | |
2089 | struct ceph_osdmap *newmap = NULL, *oldmap; | |
2090 | int err; | |
2091 | struct ceph_fsid fsid; | |
9a1ea2db | 2092 | bool was_full; |
f24e9980 SW |
2093 | |
2094 | dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); | |
2095 | p = msg->front.iov_base; | |
2096 | end = p + msg->front.iov_len; | |
2097 | ||
2098 | /* verify fsid */ | |
2099 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
2100 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d SW |
2101 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
2102 | return; | |
f24e9980 SW |
2103 | |
2104 | down_write(&osdc->map_sem); | |
2105 | ||
9a1ea2db JD |
2106 | was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); |
2107 | ||
f24e9980 SW |
2108 | /* incremental maps */ |
2109 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
2110 | dout(" %d inc maps\n", nr_maps); | |
2111 | while (nr_maps > 0) { | |
2112 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
2113 | epoch = ceph_decode_32(&p); |
2114 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
2115 | ceph_decode_need(&p, end, maplen, bad); |
2116 | next = p + maplen; | |
2117 | if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { | |
2118 | dout("applying incremental map %u len %d\n", | |
2119 | epoch, maplen); | |
2120 | newmap = osdmap_apply_incremental(&p, next, | |
2121 | osdc->osdmap, | |
15d9882c | 2122 | &osdc->client->msgr); |
f24e9980 SW |
2123 | if (IS_ERR(newmap)) { |
2124 | err = PTR_ERR(newmap); | |
2125 | goto bad; | |
2126 | } | |
30dc6381 | 2127 | BUG_ON(!newmap); |
f24e9980 SW |
2128 | if (newmap != osdc->osdmap) { |
2129 | ceph_osdmap_destroy(osdc->osdmap); | |
2130 | osdc->osdmap = newmap; | |
2131 | } | |
9a1ea2db JD |
2132 | was_full = was_full || |
2133 | ceph_osdmap_flag(osdc->osdmap, | |
2134 | CEPH_OSDMAP_FULL); | |
2135 | kick_requests(osdc, 0, was_full); | |
f24e9980 SW |
2136 | } else { |
2137 | dout("ignoring incremental map %u len %d\n", | |
2138 | epoch, maplen); | |
2139 | } | |
2140 | p = next; | |
2141 | nr_maps--; | |
2142 | } | |
2143 | if (newmap) | |
2144 | goto done; | |
2145 | ||
2146 | /* full maps */ | |
2147 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
2148 | dout(" %d full maps\n", nr_maps); | |
2149 | while (nr_maps) { | |
2150 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
2151 | epoch = ceph_decode_32(&p); |
2152 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
2153 | ceph_decode_need(&p, end, maplen, bad); |
2154 | if (nr_maps > 1) { | |
2155 | dout("skipping non-latest full map %u len %d\n", | |
2156 | epoch, maplen); | |
2157 | } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { | |
2158 | dout("skipping full map %u len %d, " | |
2159 | "older than our %u\n", epoch, maplen, | |
2160 | osdc->osdmap->epoch); | |
2161 | } else { | |
38d6453c SW |
2162 | int skipped_map = 0; |
2163 | ||
f24e9980 | 2164 | dout("taking full map %u len %d\n", epoch, maplen); |
a2505d63 | 2165 | newmap = ceph_osdmap_decode(&p, p+maplen); |
f24e9980 SW |
2166 | if (IS_ERR(newmap)) { |
2167 | err = PTR_ERR(newmap); | |
2168 | goto bad; | |
2169 | } | |
30dc6381 | 2170 | BUG_ON(!newmap); |
f24e9980 SW |
2171 | oldmap = osdc->osdmap; |
2172 | osdc->osdmap = newmap; | |
38d6453c SW |
2173 | if (oldmap) { |
2174 | if (oldmap->epoch + 1 < newmap->epoch) | |
2175 | skipped_map = 1; | |
f24e9980 | 2176 | ceph_osdmap_destroy(oldmap); |
38d6453c | 2177 | } |
9a1ea2db JD |
2178 | was_full = was_full || |
2179 | ceph_osdmap_flag(osdc->osdmap, | |
2180 | CEPH_OSDMAP_FULL); | |
2181 | kick_requests(osdc, skipped_map, was_full); | |
f24e9980 SW |
2182 | } |
2183 | p += maplen; | |
2184 | nr_maps--; | |
2185 | } | |
2186 | ||
b72e19b9 DC |
2187 | if (!osdc->osdmap) |
2188 | goto bad; | |
f24e9980 SW |
2189 | done: |
2190 | downgrade_write(&osdc->map_sem); | |
82dcabad ID |
2191 | ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, |
2192 | osdc->osdmap->epoch); | |
cd634fb6 SW |
2193 | |
2194 | /* | |
2195 | * subscribe to subsequent osdmap updates if full to ensure | |
2196 | * we find out when we are no longer full and stop returning | |
2197 | * ENOSPC. | |
2198 | */ | |
d29adb34 JD |
2199 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || |
2200 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || | |
2201 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) | |
cd634fb6 SW |
2202 | ceph_monc_request_next_osdmap(&osdc->client->monc); |
2203 | ||
f9d25199 AE |
2204 | mutex_lock(&osdc->request_mutex); |
2205 | __send_queued(osdc); | |
2206 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 2207 | up_read(&osdc->map_sem); |
03066f23 | 2208 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
2209 | return; |
2210 | ||
2211 | bad: | |
2212 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 2213 | ceph_msg_dump(msg); |
f24e9980 | 2214 | up_write(&osdc->map_sem); |
f24e9980 SW |
2215 | } |
2216 | ||
a40c4f10 YS |
2217 | /* |
2218 | * watch/notify callback event infrastructure | |
2219 | * | |
2220 | * These callbacks are used both for watch and notify operations. | |
2221 | */ | |
2222 | static void __release_event(struct kref *kref) | |
2223 | { | |
2224 | struct ceph_osd_event *event = | |
2225 | container_of(kref, struct ceph_osd_event, kref); | |
2226 | ||
2227 | dout("__release_event %p\n", event); | |
2228 | kfree(event); | |
2229 | } | |
2230 | ||
2231 | static void get_event(struct ceph_osd_event *event) | |
2232 | { | |
2233 | kref_get(&event->kref); | |
2234 | } | |
2235 | ||
2236 | void ceph_osdc_put_event(struct ceph_osd_event *event) | |
2237 | { | |
2238 | kref_put(&event->kref, __release_event); | |
2239 | } | |
2240 | EXPORT_SYMBOL(ceph_osdc_put_event); | |
2241 | ||
2242 | static void __insert_event(struct ceph_osd_client *osdc, | |
2243 | struct ceph_osd_event *new) | |
2244 | { | |
2245 | struct rb_node **p = &osdc->event_tree.rb_node; | |
2246 | struct rb_node *parent = NULL; | |
2247 | struct ceph_osd_event *event = NULL; | |
2248 | ||
2249 | while (*p) { | |
2250 | parent = *p; | |
2251 | event = rb_entry(parent, struct ceph_osd_event, node); | |
2252 | if (new->cookie < event->cookie) | |
2253 | p = &(*p)->rb_left; | |
2254 | else if (new->cookie > event->cookie) | |
2255 | p = &(*p)->rb_right; | |
2256 | else | |
2257 | BUG(); | |
2258 | } | |
2259 | ||
2260 | rb_link_node(&new->node, parent, p); | |
2261 | rb_insert_color(&new->node, &osdc->event_tree); | |
2262 | } | |
2263 | ||
2264 | static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, | |
2265 | u64 cookie) | |
2266 | { | |
2267 | struct rb_node **p = &osdc->event_tree.rb_node; | |
2268 | struct rb_node *parent = NULL; | |
2269 | struct ceph_osd_event *event = NULL; | |
2270 | ||
2271 | while (*p) { | |
2272 | parent = *p; | |
2273 | event = rb_entry(parent, struct ceph_osd_event, node); | |
2274 | if (cookie < event->cookie) | |
2275 | p = &(*p)->rb_left; | |
2276 | else if (cookie > event->cookie) | |
2277 | p = &(*p)->rb_right; | |
2278 | else | |
2279 | return event; | |
2280 | } | |
2281 | return NULL; | |
2282 | } | |
2283 | ||
2284 | static void __remove_event(struct ceph_osd_event *event) | |
2285 | { | |
2286 | struct ceph_osd_client *osdc = event->osdc; | |
2287 | ||
2288 | if (!RB_EMPTY_NODE(&event->node)) { | |
2289 | dout("__remove_event removed %p\n", event); | |
2290 | rb_erase(&event->node, &osdc->event_tree); | |
2291 | ceph_osdc_put_event(event); | |
2292 | } else { | |
2293 | dout("__remove_event didn't remove %p\n", event); | |
2294 | } | |
2295 | } | |
2296 | ||
2297 | int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
2298 | void (*event_cb)(u64, u64, u8, void *), | |
3c663bbd | 2299 | void *data, struct ceph_osd_event **pevent) |
a40c4f10 YS |
2300 | { |
2301 | struct ceph_osd_event *event; | |
2302 | ||
2303 | event = kmalloc(sizeof(*event), GFP_NOIO); | |
2304 | if (!event) | |
2305 | return -ENOMEM; | |
2306 | ||
2307 | dout("create_event %p\n", event); | |
2308 | event->cb = event_cb; | |
3c663bbd | 2309 | event->one_shot = 0; |
a40c4f10 YS |
2310 | event->data = data; |
2311 | event->osdc = osdc; | |
2312 | INIT_LIST_HEAD(&event->osd_node); | |
3ee5234d | 2313 | RB_CLEAR_NODE(&event->node); |
a40c4f10 YS |
2314 | kref_init(&event->kref); /* one ref for us */ |
2315 | kref_get(&event->kref); /* one ref for the caller */ | |
a40c4f10 YS |
2316 | |
2317 | spin_lock(&osdc->event_lock); | |
2318 | event->cookie = ++osdc->event_count; | |
2319 | __insert_event(osdc, event); | |
2320 | spin_unlock(&osdc->event_lock); | |
2321 | ||
2322 | *pevent = event; | |
2323 | return 0; | |
2324 | } | |
2325 | EXPORT_SYMBOL(ceph_osdc_create_event); | |
2326 | ||
2327 | void ceph_osdc_cancel_event(struct ceph_osd_event *event) | |
2328 | { | |
2329 | struct ceph_osd_client *osdc = event->osdc; | |
2330 | ||
2331 | dout("cancel_event %p\n", event); | |
2332 | spin_lock(&osdc->event_lock); | |
2333 | __remove_event(event); | |
2334 | spin_unlock(&osdc->event_lock); | |
2335 | ceph_osdc_put_event(event); /* caller's */ | |
2336 | } | |
2337 | EXPORT_SYMBOL(ceph_osdc_cancel_event); | |
2338 | ||
2339 | ||
2340 | static void do_event_work(struct work_struct *work) | |
2341 | { | |
2342 | struct ceph_osd_event_work *event_work = | |
2343 | container_of(work, struct ceph_osd_event_work, work); | |
2344 | struct ceph_osd_event *event = event_work->event; | |
2345 | u64 ver = event_work->ver; | |
2346 | u64 notify_id = event_work->notify_id; | |
2347 | u8 opcode = event_work->opcode; | |
2348 | ||
2349 | dout("do_event_work completing %p\n", event); | |
2350 | event->cb(ver, notify_id, opcode, event->data); | |
a40c4f10 YS |
2351 | dout("do_event_work completed %p\n", event); |
2352 | ceph_osdc_put_event(event); | |
2353 | kfree(event_work); | |
2354 | } | |
2355 | ||
2356 | ||
2357 | /* | |
2358 | * Process osd watch notifications | |
2359 | */ | |
3c663bbd AE |
2360 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
2361 | struct ceph_msg *msg) | |
a40c4f10 YS |
2362 | { |
2363 | void *p, *end; | |
2364 | u8 proto_ver; | |
2365 | u64 cookie, ver, notify_id; | |
2366 | u8 opcode; | |
2367 | struct ceph_osd_event *event; | |
2368 | struct ceph_osd_event_work *event_work; | |
2369 | ||
2370 | p = msg->front.iov_base; | |
2371 | end = p + msg->front.iov_len; | |
2372 | ||
2373 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
2374 | ceph_decode_8_safe(&p, end, opcode, bad); | |
2375 | ceph_decode_64_safe(&p, end, cookie, bad); | |
2376 | ceph_decode_64_safe(&p, end, ver, bad); | |
2377 | ceph_decode_64_safe(&p, end, notify_id, bad); | |
2378 | ||
2379 | spin_lock(&osdc->event_lock); | |
2380 | event = __find_event(osdc, cookie); | |
2381 | if (event) { | |
3c663bbd | 2382 | BUG_ON(event->one_shot); |
a40c4f10 | 2383 | get_event(event); |
a40c4f10 YS |
2384 | } |
2385 | spin_unlock(&osdc->event_lock); | |
2386 | dout("handle_watch_notify cookie %lld ver %lld event %p\n", | |
2387 | cookie, ver, event); | |
2388 | if (event) { | |
2389 | event_work = kmalloc(sizeof(*event_work), GFP_NOIO); | |
a40c4f10 | 2390 | if (!event_work) { |
91883cd2 ID |
2391 | pr_err("couldn't allocate event_work\n"); |
2392 | ceph_osdc_put_event(event); | |
2393 | return; | |
a40c4f10 | 2394 | } |
6b0ae409 | 2395 | INIT_WORK(&event_work->work, do_event_work); |
a40c4f10 YS |
2396 | event_work->event = event; |
2397 | event_work->ver = ver; | |
2398 | event_work->notify_id = notify_id; | |
2399 | event_work->opcode = opcode; | |
a40c4f10 | 2400 | |
91883cd2 ID |
2401 | queue_work(osdc->notify_wq, &event_work->work); |
2402 | } | |
a40c4f10 | 2403 | |
a40c4f10 YS |
2404 | return; |
2405 | ||
2406 | bad: | |
2407 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
a40c4f10 YS |
2408 | } |
2409 | ||
e65550fd AE |
2410 | /* |
2411 | * build new request AND message | |
2412 | * | |
2413 | */ | |
2414 | void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, | |
2415 | struct ceph_snap_context *snapc, u64 snap_id, | |
2416 | struct timespec *mtime) | |
2417 | { | |
2418 | struct ceph_msg *msg = req->r_request; | |
2419 | void *p; | |
2420 | size_t msg_size; | |
2421 | int flags = req->r_flags; | |
2422 | u64 data_len; | |
2423 | unsigned int i; | |
2424 | ||
2425 | req->r_snapid = snap_id; | |
2426 | req->r_snapc = ceph_get_snap_context(snapc); | |
2427 | ||
2428 | /* encode request */ | |
2429 | msg->hdr.version = cpu_to_le16(4); | |
2430 | ||
2431 | p = msg->front.iov_base; | |
2432 | ceph_encode_32(&p, 1); /* client_inc is always 1 */ | |
2433 | req->r_request_osdmap_epoch = p; | |
2434 | p += 4; | |
2435 | req->r_request_flags = p; | |
2436 | p += 4; | |
2437 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) | |
2438 | ceph_encode_timespec(p, mtime); | |
2439 | p += sizeof(struct ceph_timespec); | |
2440 | req->r_request_reassert_version = p; | |
2441 | p += sizeof(struct ceph_eversion); /* will get filled in */ | |
2442 | ||
2443 | /* oloc */ | |
2444 | ceph_encode_8(&p, 4); | |
2445 | ceph_encode_8(&p, 4); | |
2446 | ceph_encode_32(&p, 8 + 4 + 4); | |
2447 | req->r_request_pool = p; | |
2448 | p += 8; | |
2449 | ceph_encode_32(&p, -1); /* preferred */ | |
2450 | ceph_encode_32(&p, 0); /* key len */ | |
2451 | ||
2452 | ceph_encode_8(&p, 1); | |
2453 | req->r_request_pgid = p; | |
2454 | p += 8 + 4; | |
2455 | ceph_encode_32(&p, -1); /* preferred */ | |
2456 | ||
2457 | /* oid */ | |
3c972c95 ID |
2458 | ceph_encode_32(&p, req->r_base_oid.name_len); |
2459 | memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len); | |
2460 | dout("oid '%.*s' len %d\n", req->r_base_oid.name_len, | |
2461 | req->r_base_oid.name, req->r_base_oid.name_len); | |
2462 | p += req->r_base_oid.name_len; | |
e65550fd AE |
2463 | |
2464 | /* ops--can imply data */ | |
2465 | ceph_encode_16(&p, (u16)req->r_num_ops); | |
2466 | data_len = 0; | |
2467 | for (i = 0; i < req->r_num_ops; i++) { | |
2468 | data_len += osd_req_encode_op(req, p, i); | |
2469 | p += sizeof(struct ceph_osd_op); | |
2470 | } | |
2471 | ||
2472 | /* snaps */ | |
2473 | ceph_encode_64(&p, req->r_snapid); | |
2474 | ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); | |
2475 | ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); | |
2476 | if (req->r_snapc) { | |
2477 | for (i = 0; i < snapc->num_snaps; i++) { | |
2478 | ceph_encode_64(&p, req->r_snapc->snaps[i]); | |
2479 | } | |
2480 | } | |
2481 | ||
2482 | req->r_request_attempts = p; | |
2483 | p += 4; | |
2484 | ||
2485 | /* data */ | |
2486 | if (flags & CEPH_OSD_FLAG_WRITE) { | |
2487 | u16 data_off; | |
2488 | ||
2489 | /* | |
2490 | * The header "data_off" is a hint to the receiver | |
2491 | * allowing it to align received data into its | |
2492 | * buffers such that there's no need to re-copy | |
2493 | * it before writing it to disk (direct I/O). | |
2494 | */ | |
2495 | data_off = (u16) (off & 0xffff); | |
2496 | req->r_request->hdr.data_off = cpu_to_le16(data_off); | |
2497 | } | |
2498 | req->r_request->hdr.data_len = cpu_to_le32(data_len); | |
2499 | ||
2500 | BUG_ON(p > msg->front.iov_base + msg->front.iov_len); | |
2501 | msg_size = p - msg->front.iov_base; | |
2502 | msg->front.iov_len = msg_size; | |
2503 | msg->hdr.front_len = cpu_to_le32(msg_size); | |
2504 | ||
2505 | dout("build_request msg_size was %d\n", (int)msg_size); | |
2506 | } | |
2507 | EXPORT_SYMBOL(ceph_osdc_build_request); | |
2508 | ||
70636773 AE |
2509 | /* |
2510 | * Register request, send initial attempt. | |
2511 | */ | |
2512 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
2513 | struct ceph_osd_request *req, | |
2514 | bool nofail) | |
2515 | { | |
0bbfdfe8 | 2516 | int rc; |
70636773 | 2517 | |
f24e9980 SW |
2518 | down_read(&osdc->map_sem); |
2519 | mutex_lock(&osdc->request_mutex); | |
0bbfdfe8 ID |
2520 | |
2521 | rc = __ceph_osdc_start_request(osdc, req, nofail); | |
2522 | ||
f24e9980 SW |
2523 | mutex_unlock(&osdc->request_mutex); |
2524 | up_read(&osdc->map_sem); | |
0bbfdfe8 | 2525 | |
f24e9980 SW |
2526 | return rc; |
2527 | } | |
3d14c5d2 | 2528 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 | 2529 | |
c9f9b93d ID |
2530 | /* |
2531 | * Unregister a registered request. The request is not completed (i.e. | |
2532 | * no callbacks or wakeups) - higher layers are supposed to know what | |
2533 | * they are canceling. | |
2534 | */ | |
2535 | void ceph_osdc_cancel_request(struct ceph_osd_request *req) | |
2536 | { | |
2537 | struct ceph_osd_client *osdc = req->r_osdc; | |
2538 | ||
2539 | mutex_lock(&osdc->request_mutex); | |
2540 | if (req->r_linger) | |
2541 | __unregister_linger_request(osdc, req); | |
2542 | __unregister_request(osdc, req); | |
2543 | mutex_unlock(&osdc->request_mutex); | |
2544 | ||
2545 | dout("%s %p tid %llu canceled\n", __func__, req, req->r_tid); | |
2546 | } | |
2547 | EXPORT_SYMBOL(ceph_osdc_cancel_request); | |
2548 | ||
f24e9980 SW |
2549 | /* |
2550 | * wait for a request to complete | |
2551 | */ | |
2552 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
2553 | struct ceph_osd_request *req) | |
2554 | { | |
2555 | int rc; | |
2556 | ||
c9f9b93d ID |
2557 | dout("%s %p tid %llu\n", __func__, req, req->r_tid); |
2558 | ||
f24e9980 SW |
2559 | rc = wait_for_completion_interruptible(&req->r_completion); |
2560 | if (rc < 0) { | |
c9f9b93d ID |
2561 | dout("%s %p tid %llu interrupted\n", __func__, req, req->r_tid); |
2562 | ceph_osdc_cancel_request(req); | |
25845472 | 2563 | complete_request(req); |
f24e9980 SW |
2564 | return rc; |
2565 | } | |
2566 | ||
c9f9b93d ID |
2567 | dout("%s %p tid %llu result %d\n", __func__, req, req->r_tid, |
2568 | req->r_result); | |
f24e9980 SW |
2569 | return req->r_result; |
2570 | } | |
3d14c5d2 | 2571 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
2572 | |
2573 | /* | |
2574 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
2575 | */ | |
2576 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
2577 | { | |
2578 | struct ceph_osd_request *req; | |
2579 | u64 last_tid, next_tid = 0; | |
2580 | ||
2581 | mutex_lock(&osdc->request_mutex); | |
2582 | last_tid = osdc->last_tid; | |
2583 | while (1) { | |
2584 | req = __lookup_request_ge(osdc, next_tid); | |
2585 | if (!req) | |
2586 | break; | |
2587 | if (req->r_tid > last_tid) | |
2588 | break; | |
2589 | ||
2590 | next_tid = req->r_tid + 1; | |
2591 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) | |
2592 | continue; | |
2593 | ||
2594 | ceph_osdc_get_request(req); | |
2595 | mutex_unlock(&osdc->request_mutex); | |
2596 | dout("sync waiting on tid %llu (last is %llu)\n", | |
2597 | req->r_tid, last_tid); | |
2598 | wait_for_completion(&req->r_safe_completion); | |
2599 | mutex_lock(&osdc->request_mutex); | |
2600 | ceph_osdc_put_request(req); | |
2601 | } | |
2602 | mutex_unlock(&osdc->request_mutex); | |
2603 | dout("sync done (thru tid %llu)\n", last_tid); | |
2604 | } | |
3d14c5d2 | 2605 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 | 2606 | |
dd935f44 JD |
2607 | /* |
2608 | * Call all pending notify callbacks - for use after a watch is | |
2609 | * unregistered, to make sure no more callbacks for it will be invoked | |
2610 | */ | |
f6479449 | 2611 | void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) |
dd935f44 JD |
2612 | { |
2613 | flush_workqueue(osdc->notify_wq); | |
2614 | } | |
2615 | EXPORT_SYMBOL(ceph_osdc_flush_notifies); | |
2616 | ||
2617 | ||
f24e9980 SW |
2618 | /* |
2619 | * init, shutdown | |
2620 | */ | |
2621 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
2622 | { | |
2623 | int err; | |
2624 | ||
2625 | dout("init\n"); | |
2626 | osdc->client = client; | |
2627 | osdc->osdmap = NULL; | |
2628 | init_rwsem(&osdc->map_sem); | |
2629 | init_completion(&osdc->map_waiters); | |
2630 | osdc->last_requested_map = 0; | |
2631 | mutex_init(&osdc->request_mutex); | |
f24e9980 SW |
2632 | osdc->last_tid = 0; |
2633 | osdc->osds = RB_ROOT; | |
f5a2041b | 2634 | INIT_LIST_HEAD(&osdc->osd_lru); |
f24e9980 | 2635 | osdc->requests = RB_ROOT; |
422d2cb8 | 2636 | INIT_LIST_HEAD(&osdc->req_lru); |
6f6c7006 SW |
2637 | INIT_LIST_HEAD(&osdc->req_unsent); |
2638 | INIT_LIST_HEAD(&osdc->req_notarget); | |
a40c4f10 | 2639 | INIT_LIST_HEAD(&osdc->req_linger); |
f24e9980 SW |
2640 | osdc->num_requests = 0; |
2641 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); | |
f5a2041b | 2642 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10 YS |
2643 | spin_lock_init(&osdc->event_lock); |
2644 | osdc->event_tree = RB_ROOT; | |
2645 | osdc->event_count = 0; | |
f5a2041b YS |
2646 | |
2647 | schedule_delayed_work(&osdc->osds_timeout_work, | |
a319bf56 | 2648 | round_jiffies_relative(osdc->client->options->osd_idle_ttl)); |
f24e9980 | 2649 | |
5f44f142 | 2650 | err = -ENOMEM; |
9e767adb ID |
2651 | osdc->req_mempool = mempool_create_slab_pool(10, |
2652 | ceph_osd_request_cache); | |
f24e9980 | 2653 | if (!osdc->req_mempool) |
5f44f142 | 2654 | goto out; |
f24e9980 | 2655 | |
d50b409f SW |
2656 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
2657 | OSD_OP_FRONT_LEN, 10, true, | |
4f48280e | 2658 | "osd_op"); |
f24e9980 | 2659 | if (err < 0) |
5f44f142 | 2660 | goto out_mempool; |
d50b409f | 2661 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
4f48280e SW |
2662 | OSD_OPREPLY_FRONT_LEN, 10, true, |
2663 | "osd_op_reply"); | |
c16e7869 SW |
2664 | if (err < 0) |
2665 | goto out_msgpool; | |
a40c4f10 | 2666 | |
dbcae088 | 2667 | err = -ENOMEM; |
a40c4f10 | 2668 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); |
dbcae088 | 2669 | if (!osdc->notify_wq) |
c172ec5c ID |
2670 | goto out_msgpool_reply; |
2671 | ||
f24e9980 | 2672 | return 0; |
5f44f142 | 2673 | |
c172ec5c ID |
2674 | out_msgpool_reply: |
2675 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); | |
c16e7869 SW |
2676 | out_msgpool: |
2677 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
2678 | out_mempool: |
2679 | mempool_destroy(osdc->req_mempool); | |
2680 | out: | |
2681 | return err; | |
f24e9980 SW |
2682 | } |
2683 | ||
2684 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
2685 | { | |
a40c4f10 YS |
2686 | flush_workqueue(osdc->notify_wq); |
2687 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 2688 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 2689 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
f24e9980 SW |
2690 | if (osdc->osdmap) { |
2691 | ceph_osdmap_destroy(osdc->osdmap); | |
2692 | osdc->osdmap = NULL; | |
2693 | } | |
aca420bc | 2694 | remove_all_osds(osdc); |
f24e9980 SW |
2695 | mempool_destroy(osdc->req_mempool); |
2696 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 2697 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
2698 | } |
2699 | ||
2700 | /* | |
2701 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
2702 | * *plen. Return number of bytes read, or error. | |
2703 | */ | |
2704 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
2705 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
2706 | u64 off, u64 *plen, | |
2707 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 2708 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
2709 | { |
2710 | struct ceph_osd_request *req; | |
2711 | int rc = 0; | |
2712 | ||
2713 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
2714 | vino.snap, off, *plen); | |
715e4cd4 | 2715 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, |
f24e9980 | 2716 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, |
acead002 | 2717 | NULL, truncate_seq, truncate_size, |
153e5167 | 2718 | false); |
6816282d SW |
2719 | if (IS_ERR(req)) |
2720 | return PTR_ERR(req); | |
f24e9980 SW |
2721 | |
2722 | /* it may be a short read due to an object boundary */ | |
0fff87ec | 2723 | |
406e2c9f | 2724 | osd_req_op_extent_osd_data_pages(req, 0, |
a4ce40a9 | 2725 | pages, *plen, page_align, false, false); |
f24e9980 | 2726 | |
e0c59487 | 2727 | dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", |
43bfe5de | 2728 | off, *plen, *plen, page_align); |
f24e9980 | 2729 | |
79528734 | 2730 | ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); |
02ee07d3 | 2731 | |
f24e9980 SW |
2732 | rc = ceph_osdc_start_request(osdc, req, false); |
2733 | if (!rc) | |
2734 | rc = ceph_osdc_wait_request(osdc, req); | |
2735 | ||
2736 | ceph_osdc_put_request(req); | |
2737 | dout("readpages result %d\n", rc); | |
2738 | return rc; | |
2739 | } | |
3d14c5d2 | 2740 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
2741 | |
2742 | /* | |
2743 | * do a synchronous write on N pages | |
2744 | */ | |
2745 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
2746 | struct ceph_file_layout *layout, | |
2747 | struct ceph_snap_context *snapc, | |
2748 | u64 off, u64 len, | |
2749 | u32 truncate_seq, u64 truncate_size, | |
2750 | struct timespec *mtime, | |
24808826 | 2751 | struct page **pages, int num_pages) |
f24e9980 SW |
2752 | { |
2753 | struct ceph_osd_request *req; | |
2754 | int rc = 0; | |
b7495fc2 | 2755 | int page_align = off & ~PAGE_MASK; |
f24e9980 | 2756 | |
acead002 | 2757 | BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ |
715e4cd4 | 2758 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, |
f24e9980 | 2759 | CEPH_OSD_OP_WRITE, |
24808826 | 2760 | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, |
acead002 | 2761 | snapc, truncate_seq, truncate_size, |
153e5167 | 2762 | true); |
6816282d SW |
2763 | if (IS_ERR(req)) |
2764 | return PTR_ERR(req); | |
f24e9980 SW |
2765 | |
2766 | /* it may be a short write due to an object boundary */ | |
406e2c9f | 2767 | osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, |
43bfe5de AE |
2768 | false, false); |
2769 | dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); | |
f24e9980 | 2770 | |
79528734 | 2771 | ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); |
02ee07d3 | 2772 | |
87f979d3 | 2773 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
2774 | if (!rc) |
2775 | rc = ceph_osdc_wait_request(osdc, req); | |
2776 | ||
2777 | ceph_osdc_put_request(req); | |
2778 | if (rc == 0) | |
2779 | rc = len; | |
2780 | dout("writepages result %d\n", rc); | |
2781 | return rc; | |
2782 | } | |
3d14c5d2 | 2783 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 | 2784 | |
5522ae0b AE |
2785 | int ceph_osdc_setup(void) |
2786 | { | |
2787 | BUG_ON(ceph_osd_request_cache); | |
2788 | ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", | |
2789 | sizeof (struct ceph_osd_request), | |
2790 | __alignof__(struct ceph_osd_request), | |
2791 | 0, NULL); | |
2792 | ||
2793 | return ceph_osd_request_cache ? 0 : -ENOMEM; | |
2794 | } | |
2795 | EXPORT_SYMBOL(ceph_osdc_setup); | |
2796 | ||
2797 | void ceph_osdc_cleanup(void) | |
2798 | { | |
2799 | BUG_ON(!ceph_osd_request_cache); | |
2800 | kmem_cache_destroy(ceph_osd_request_cache); | |
2801 | ceph_osd_request_cache = NULL; | |
2802 | } | |
2803 | EXPORT_SYMBOL(ceph_osdc_cleanup); | |
2804 | ||
f24e9980 SW |
2805 | /* |
2806 | * handle incoming message | |
2807 | */ | |
2808 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
2809 | { | |
2810 | struct ceph_osd *osd = con->private; | |
32c895e7 | 2811 | struct ceph_osd_client *osdc; |
f24e9980 SW |
2812 | int type = le16_to_cpu(msg->hdr.type); |
2813 | ||
2814 | if (!osd) | |
4a32f93d | 2815 | goto out; |
32c895e7 | 2816 | osdc = osd->o_osdc; |
f24e9980 SW |
2817 | |
2818 | switch (type) { | |
2819 | case CEPH_MSG_OSD_MAP: | |
2820 | ceph_osdc_handle_map(osdc, msg); | |
2821 | break; | |
2822 | case CEPH_MSG_OSD_OPREPLY: | |
70cf052d | 2823 | handle_reply(osdc, msg); |
f24e9980 | 2824 | break; |
a40c4f10 YS |
2825 | case CEPH_MSG_WATCH_NOTIFY: |
2826 | handle_watch_notify(osdc, msg); | |
2827 | break; | |
f24e9980 SW |
2828 | |
2829 | default: | |
2830 | pr_err("received unknown message type %d %s\n", type, | |
2831 | ceph_msg_type_name(type)); | |
2832 | } | |
4a32f93d | 2833 | out: |
f24e9980 SW |
2834 | ceph_msg_put(msg); |
2835 | } | |
2836 | ||
5b3a4db3 | 2837 | /* |
d15f9d69 ID |
2838 | * Lookup and return message for incoming reply. Don't try to do |
2839 | * anything about a larger than preallocated data portion of the | |
2840 | * message at the moment - for now, just skip the message. | |
5b3a4db3 SW |
2841 | */ |
2842 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
2843 | struct ceph_msg_header *hdr, |
2844 | int *skip) | |
f24e9980 SW |
2845 | { |
2846 | struct ceph_osd *osd = con->private; | |
2847 | struct ceph_osd_client *osdc = osd->o_osdc; | |
2450418c | 2848 | struct ceph_msg *m; |
0547a9b3 | 2849 | struct ceph_osd_request *req; |
3f0a4ac5 | 2850 | int front_len = le32_to_cpu(hdr->front_len); |
5b3a4db3 | 2851 | int data_len = le32_to_cpu(hdr->data_len); |
0547a9b3 | 2852 | u64 tid; |
f24e9980 | 2853 | |
0547a9b3 YS |
2854 | tid = le64_to_cpu(hdr->tid); |
2855 | mutex_lock(&osdc->request_mutex); | |
2856 | req = __lookup_request(osdc, tid); | |
2857 | if (!req) { | |
cd8140c6 ID |
2858 | dout("%s osd%d tid %llu unknown, skipping\n", __func__, |
2859 | osd->o_osd, tid); | |
0547a9b3 | 2860 | m = NULL; |
d15f9d69 | 2861 | *skip = 1; |
0547a9b3 YS |
2862 | goto out; |
2863 | } | |
c16e7869 | 2864 | |
ace6d3a9 | 2865 | ceph_msg_revoke_incoming(req->r_reply); |
0547a9b3 | 2866 | |
f2be82b0 | 2867 | if (front_len > req->r_reply->front_alloc_len) { |
d15f9d69 ID |
2868 | pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", |
2869 | __func__, osd->o_osd, req->r_tid, front_len, | |
2870 | req->r_reply->front_alloc_len); | |
3f0a4ac5 ID |
2871 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, |
2872 | false); | |
a79832f2 | 2873 | if (!m) |
c16e7869 SW |
2874 | goto out; |
2875 | ceph_msg_put(req->r_reply); | |
2876 | req->r_reply = m; | |
2877 | } | |
0fff87ec | 2878 | |
d15f9d69 ID |
2879 | if (data_len > req->r_reply->data_length) { |
2880 | pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", | |
2881 | __func__, osd->o_osd, req->r_tid, data_len, | |
2882 | req->r_reply->data_length); | |
2883 | m = NULL; | |
2884 | *skip = 1; | |
2885 | goto out; | |
0547a9b3 | 2886 | } |
d15f9d69 ID |
2887 | |
2888 | m = ceph_msg_get(req->r_reply); | |
c16e7869 | 2889 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 YS |
2890 | |
2891 | out: | |
2892 | mutex_unlock(&osdc->request_mutex); | |
2450418c | 2893 | return m; |
5b3a4db3 SW |
2894 | } |
2895 | ||
2896 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, | |
2897 | struct ceph_msg_header *hdr, | |
2898 | int *skip) | |
2899 | { | |
2900 | struct ceph_osd *osd = con->private; | |
2901 | int type = le16_to_cpu(hdr->type); | |
2902 | int front = le32_to_cpu(hdr->front_len); | |
2903 | ||
1c20f2d2 | 2904 | *skip = 0; |
5b3a4db3 SW |
2905 | switch (type) { |
2906 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 2907 | case CEPH_MSG_WATCH_NOTIFY: |
b61c2763 | 2908 | return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3 SW |
2909 | case CEPH_MSG_OSD_OPREPLY: |
2910 | return get_reply(con, hdr, skip); | |
2911 | default: | |
2912 | pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, | |
2913 | osd->o_osd); | |
2914 | *skip = 1; | |
2915 | return NULL; | |
2916 | } | |
f24e9980 SW |
2917 | } |
2918 | ||
2919 | /* | |
2920 | * Wrappers to refcount containing ceph_osd struct | |
2921 | */ | |
2922 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
2923 | { | |
2924 | struct ceph_osd *osd = con->private; | |
2925 | if (get_osd(osd)) | |
2926 | return con; | |
2927 | return NULL; | |
2928 | } | |
2929 | ||
2930 | static void put_osd_con(struct ceph_connection *con) | |
2931 | { | |
2932 | struct ceph_osd *osd = con->private; | |
2933 | put_osd(osd); | |
2934 | } | |
2935 | ||
4e7a5dcd SW |
2936 | /* |
2937 | * authentication | |
2938 | */ | |
a3530df3 AE |
2939 | /* |
2940 | * Note: returned pointer is the address of a structure that's | |
2941 | * managed separately. Caller must *not* attempt to free it. | |
2942 | */ | |
2943 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 2944 | int *proto, int force_new) |
4e7a5dcd SW |
2945 | { |
2946 | struct ceph_osd *o = con->private; | |
2947 | struct ceph_osd_client *osdc = o->o_osdc; | |
2948 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 2949 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 2950 | |
74f1869f | 2951 | if (force_new && auth->authorizer) { |
27859f97 | 2952 | ceph_auth_destroy_authorizer(ac, auth->authorizer); |
74f1869f AE |
2953 | auth->authorizer = NULL; |
2954 | } | |
27859f97 SW |
2955 | if (!auth->authorizer) { |
2956 | int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
2957 | auth); | |
4e7a5dcd | 2958 | if (ret) |
a3530df3 | 2959 | return ERR_PTR(ret); |
27859f97 SW |
2960 | } else { |
2961 | int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
0bed9b5c SW |
2962 | auth); |
2963 | if (ret) | |
2964 | return ERR_PTR(ret); | |
4e7a5dcd | 2965 | } |
4e7a5dcd | 2966 | *proto = ac->protocol; |
74f1869f | 2967 | |
a3530df3 | 2968 | return auth; |
4e7a5dcd SW |
2969 | } |
2970 | ||
2971 | ||
2972 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
2973 | { | |
2974 | struct ceph_osd *o = con->private; | |
2975 | struct ceph_osd_client *osdc = o->o_osdc; | |
2976 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2977 | ||
27859f97 | 2978 | return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
2979 | } |
2980 | ||
9bd2e6f8 SW |
2981 | static int invalidate_authorizer(struct ceph_connection *con) |
2982 | { | |
2983 | struct ceph_osd *o = con->private; | |
2984 | struct ceph_osd_client *osdc = o->o_osdc; | |
2985 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2986 | ||
27859f97 | 2987 | ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
9bd2e6f8 SW |
2988 | return ceph_monc_validate_auth(&osdc->client->monc); |
2989 | } | |
4e7a5dcd | 2990 | |
79dbd1ba | 2991 | static int osd_sign_message(struct ceph_msg *msg) |
33d07337 | 2992 | { |
79dbd1ba | 2993 | struct ceph_osd *o = msg->con->private; |
33d07337 | 2994 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 2995 | |
33d07337 YZ |
2996 | return ceph_auth_sign_message(auth, msg); |
2997 | } | |
2998 | ||
79dbd1ba | 2999 | static int osd_check_message_signature(struct ceph_msg *msg) |
33d07337 | 3000 | { |
79dbd1ba | 3001 | struct ceph_osd *o = msg->con->private; |
33d07337 | 3002 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 3003 | |
33d07337 YZ |
3004 | return ceph_auth_check_message_signature(auth, msg); |
3005 | } | |
3006 | ||
9e32789f | 3007 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
3008 | .get = get_osd_con, |
3009 | .put = put_osd_con, | |
3010 | .dispatch = dispatch, | |
4e7a5dcd SW |
3011 | .get_authorizer = get_authorizer, |
3012 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 3013 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 3014 | .alloc_msg = alloc_msg, |
79dbd1ba ID |
3015 | .sign_message = osd_sign_message, |
3016 | .check_message_signature = osd_check_message_signature, | |
81b024e7 | 3017 | .fault = osd_reset, |
f24e9980 | 3018 | }; |