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 | ||
863c7eb5 AE |
123 | #define osd_req_op_data(oreq, whch, typ, fld) \ |
124 | ({ \ | |
125 | BUG_ON(whch >= (oreq)->r_num_ops); \ | |
126 | &(oreq)->r_ops[whch].typ.fld; \ | |
127 | }) | |
128 | ||
49719778 AE |
129 | static struct ceph_osd_data * |
130 | osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) | |
131 | { | |
132 | BUG_ON(which >= osd_req->r_num_ops); | |
133 | ||
134 | return &osd_req->r_ops[which].raw_data_in; | |
135 | } | |
136 | ||
a4ce40a9 AE |
137 | struct ceph_osd_data * |
138 | osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, | |
406e2c9f | 139 | unsigned int which) |
a4ce40a9 | 140 | { |
863c7eb5 | 141 | return osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
142 | } |
143 | EXPORT_SYMBOL(osd_req_op_extent_osd_data); | |
144 | ||
a4ce40a9 AE |
145 | struct ceph_osd_data * |
146 | osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, | |
147 | unsigned int which) | |
148 | { | |
863c7eb5 | 149 | return osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
150 | } |
151 | EXPORT_SYMBOL(osd_req_op_cls_response_data); /* ??? */ | |
152 | ||
49719778 AE |
153 | void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, |
154 | unsigned int which, struct page **pages, | |
155 | u64 length, u32 alignment, | |
156 | bool pages_from_pool, bool own_pages) | |
157 | { | |
158 | struct ceph_osd_data *osd_data; | |
159 | ||
160 | osd_data = osd_req_op_raw_data_in(osd_req, which); | |
161 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
162 | pages_from_pool, own_pages); | |
163 | } | |
164 | EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); | |
165 | ||
a4ce40a9 | 166 | void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, |
406e2c9f AE |
167 | unsigned int which, struct page **pages, |
168 | u64 length, u32 alignment, | |
a4ce40a9 AE |
169 | bool pages_from_pool, bool own_pages) |
170 | { | |
171 | struct ceph_osd_data *osd_data; | |
172 | ||
863c7eb5 | 173 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
174 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
175 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
176 | } |
177 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); | |
178 | ||
179 | void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, | |
406e2c9f | 180 | unsigned int which, struct ceph_pagelist *pagelist) |
a4ce40a9 AE |
181 | { |
182 | struct ceph_osd_data *osd_data; | |
183 | ||
863c7eb5 | 184 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 | 185 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
186 | } |
187 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); | |
188 | ||
189 | #ifdef CONFIG_BLOCK | |
190 | void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, | |
406e2c9f | 191 | unsigned int which, struct bio *bio, size_t bio_length) |
a4ce40a9 AE |
192 | { |
193 | struct ceph_osd_data *osd_data; | |
863c7eb5 AE |
194 | |
195 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); | |
a4ce40a9 | 196 | ceph_osd_data_bio_init(osd_data, bio, bio_length); |
a4ce40a9 AE |
197 | } |
198 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); | |
199 | #endif /* CONFIG_BLOCK */ | |
200 | ||
201 | static void osd_req_op_cls_request_info_pagelist( | |
202 | struct ceph_osd_request *osd_req, | |
203 | unsigned int which, struct ceph_pagelist *pagelist) | |
204 | { | |
205 | struct ceph_osd_data *osd_data; | |
206 | ||
863c7eb5 | 207 | osd_data = osd_req_op_data(osd_req, which, cls, request_info); |
a4ce40a9 | 208 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
209 | } |
210 | ||
04017e29 AE |
211 | void osd_req_op_cls_request_data_pagelist( |
212 | struct ceph_osd_request *osd_req, | |
213 | unsigned int which, struct ceph_pagelist *pagelist) | |
214 | { | |
215 | struct ceph_osd_data *osd_data; | |
216 | ||
863c7eb5 | 217 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); |
04017e29 AE |
218 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
219 | } | |
220 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); | |
221 | ||
6c57b554 AE |
222 | void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, |
223 | unsigned int which, struct page **pages, u64 length, | |
224 | u32 alignment, bool pages_from_pool, bool own_pages) | |
225 | { | |
226 | struct ceph_osd_data *osd_data; | |
227 | ||
228 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); | |
229 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
230 | pages_from_pool, own_pages); | |
231 | } | |
232 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); | |
233 | ||
a4ce40a9 AE |
234 | void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, |
235 | unsigned int which, struct page **pages, u64 length, | |
236 | u32 alignment, bool pages_from_pool, bool own_pages) | |
237 | { | |
238 | struct ceph_osd_data *osd_data; | |
239 | ||
863c7eb5 | 240 | osd_data = osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
241 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
242 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
243 | } |
244 | EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); | |
245 | ||
23c08a9c AE |
246 | static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) |
247 | { | |
248 | switch (osd_data->type) { | |
249 | case CEPH_OSD_DATA_TYPE_NONE: | |
250 | return 0; | |
251 | case CEPH_OSD_DATA_TYPE_PAGES: | |
252 | return osd_data->length; | |
253 | case CEPH_OSD_DATA_TYPE_PAGELIST: | |
254 | return (u64)osd_data->pagelist->length; | |
255 | #ifdef CONFIG_BLOCK | |
256 | case CEPH_OSD_DATA_TYPE_BIO: | |
257 | return (u64)osd_data->bio_length; | |
258 | #endif /* CONFIG_BLOCK */ | |
259 | default: | |
260 | WARN(true, "unrecognized data type %d\n", (int)osd_data->type); | |
261 | return 0; | |
262 | } | |
263 | } | |
264 | ||
c54d47bf AE |
265 | static void ceph_osd_data_release(struct ceph_osd_data *osd_data) |
266 | { | |
5476492f | 267 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { |
c54d47bf AE |
268 | int num_pages; |
269 | ||
270 | num_pages = calc_pages_for((u64)osd_data->alignment, | |
271 | (u64)osd_data->length); | |
272 | ceph_release_page_vector(osd_data->pages, num_pages); | |
273 | } | |
5476492f AE |
274 | ceph_osd_data_init(osd_data); |
275 | } | |
276 | ||
277 | static void osd_req_op_data_release(struct ceph_osd_request *osd_req, | |
278 | unsigned int which) | |
279 | { | |
280 | struct ceph_osd_req_op *op; | |
281 | ||
282 | BUG_ON(which >= osd_req->r_num_ops); | |
283 | op = &osd_req->r_ops[which]; | |
284 | ||
285 | switch (op->op) { | |
286 | case CEPH_OSD_OP_READ: | |
287 | case CEPH_OSD_OP_WRITE: | |
288 | ceph_osd_data_release(&op->extent.osd_data); | |
289 | break; | |
290 | case CEPH_OSD_OP_CALL: | |
291 | ceph_osd_data_release(&op->cls.request_info); | |
04017e29 | 292 | ceph_osd_data_release(&op->cls.request_data); |
5476492f AE |
293 | ceph_osd_data_release(&op->cls.response_data); |
294 | break; | |
295 | default: | |
296 | break; | |
297 | } | |
c54d47bf AE |
298 | } |
299 | ||
f24e9980 SW |
300 | /* |
301 | * requests | |
302 | */ | |
9e94af20 | 303 | static void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 304 | { |
9e94af20 ID |
305 | struct ceph_osd_request *req = container_of(kref, |
306 | struct ceph_osd_request, r_kref); | |
5476492f | 307 | unsigned int which; |
415e49a9 | 308 | |
9e94af20 ID |
309 | dout("%s %p (r_request %p r_reply %p)\n", __func__, req, |
310 | req->r_request, req->r_reply); | |
6562d661 ID |
311 | WARN_ON(!RB_EMPTY_NODE(&req->r_node)); |
312 | WARN_ON(!list_empty(&req->r_req_lru_item)); | |
313 | WARN_ON(!list_empty(&req->r_osd_item)); | |
314 | WARN_ON(!list_empty(&req->r_linger_item)); | |
315 | WARN_ON(!list_empty(&req->r_linger_osd_item)); | |
316 | WARN_ON(req->r_osd); | |
9e94af20 | 317 | |
415e49a9 SW |
318 | if (req->r_request) |
319 | ceph_msg_put(req->r_request); | |
ace6d3a9 | 320 | if (req->r_reply) { |
8921d114 | 321 | ceph_msg_revoke_incoming(req->r_reply); |
ab8cb34a | 322 | ceph_msg_put(req->r_reply); |
ace6d3a9 | 323 | } |
0fff87ec | 324 | |
5476492f AE |
325 | for (which = 0; which < req->r_num_ops; which++) |
326 | osd_req_op_data_release(req, which); | |
0fff87ec | 327 | |
415e49a9 SW |
328 | ceph_put_snap_context(req->r_snapc); |
329 | if (req->r_mempool) | |
330 | mempool_free(req, req->r_osdc->req_mempool); | |
331 | else | |
5522ae0b AE |
332 | kmem_cache_free(ceph_osd_request_cache, req); |
333 | ||
f24e9980 | 334 | } |
9e94af20 ID |
335 | |
336 | void ceph_osdc_get_request(struct ceph_osd_request *req) | |
337 | { | |
338 | dout("%s %p (was %d)\n", __func__, req, | |
339 | atomic_read(&req->r_kref.refcount)); | |
340 | kref_get(&req->r_kref); | |
341 | } | |
342 | EXPORT_SYMBOL(ceph_osdc_get_request); | |
343 | ||
344 | void ceph_osdc_put_request(struct ceph_osd_request *req) | |
345 | { | |
346 | dout("%s %p (was %d)\n", __func__, req, | |
347 | atomic_read(&req->r_kref.refcount)); | |
348 | kref_put(&req->r_kref, ceph_osdc_release_request); | |
349 | } | |
350 | EXPORT_SYMBOL(ceph_osdc_put_request); | |
68b4476b | 351 | |
3499e8a5 | 352 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 353 | struct ceph_snap_context *snapc, |
1b83bef2 | 354 | unsigned int num_ops, |
3499e8a5 | 355 | bool use_mempool, |
54a54007 | 356 | gfp_t gfp_flags) |
f24e9980 SW |
357 | { |
358 | struct ceph_osd_request *req; | |
359 | struct ceph_msg *msg; | |
1b83bef2 SW |
360 | size_t msg_size; |
361 | ||
79528734 AE |
362 | BUILD_BUG_ON(CEPH_OSD_MAX_OP > U16_MAX); |
363 | BUG_ON(num_ops > CEPH_OSD_MAX_OP); | |
364 | ||
1b83bef2 SW |
365 | msg_size = 4 + 4 + 8 + 8 + 4+8; |
366 | msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ | |
367 | msg_size += 1 + 8 + 4 + 4; /* pg_t */ | |
2d0ebc5d | 368 | msg_size += 4 + CEPH_MAX_OID_NAME_LEN; /* oid */ |
1b83bef2 SW |
369 | msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); |
370 | msg_size += 8; /* snapid */ | |
371 | msg_size += 8; /* snap_seq */ | |
372 | msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ | |
373 | msg_size += 4; | |
f24e9980 SW |
374 | |
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 | ||
413 | /* create request message; allow space for oid */ | |
f24e9980 | 414 | if (use_mempool) |
8f3bc053 | 415 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 416 | else |
b61c2763 | 417 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); |
a79832f2 | 418 | if (!msg) { |
f24e9980 | 419 | ceph_osdc_put_request(req); |
a79832f2 | 420 | return NULL; |
f24e9980 | 421 | } |
68b4476b | 422 | |
f24e9980 | 423 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 YS |
424 | |
425 | req->r_request = msg; | |
3499e8a5 YS |
426 | |
427 | return req; | |
428 | } | |
3d14c5d2 | 429 | EXPORT_SYMBOL(ceph_osdc_alloc_request); |
3499e8a5 | 430 | |
a8dd0a37 | 431 | static bool osd_req_opcode_valid(u16 opcode) |
68b4476b | 432 | { |
a8dd0a37 | 433 | switch (opcode) { |
68b4476b | 434 | case CEPH_OSD_OP_READ: |
a8dd0a37 | 435 | case CEPH_OSD_OP_STAT: |
4c46459c AE |
436 | case CEPH_OSD_OP_MAPEXT: |
437 | case CEPH_OSD_OP_MASKTRUNC: | |
438 | case CEPH_OSD_OP_SPARSE_READ: | |
a9f36c3e | 439 | case CEPH_OSD_OP_NOTIFY: |
a8dd0a37 | 440 | case CEPH_OSD_OP_NOTIFY_ACK: |
4c46459c | 441 | case CEPH_OSD_OP_ASSERT_VER: |
a8dd0a37 | 442 | case CEPH_OSD_OP_WRITE: |
4c46459c AE |
443 | case CEPH_OSD_OP_WRITEFULL: |
444 | case CEPH_OSD_OP_TRUNCATE: | |
445 | case CEPH_OSD_OP_ZERO: | |
446 | case CEPH_OSD_OP_DELETE: | |
447 | case CEPH_OSD_OP_APPEND: | |
a8dd0a37 | 448 | case CEPH_OSD_OP_STARTSYNC: |
4c46459c AE |
449 | case CEPH_OSD_OP_SETTRUNC: |
450 | case CEPH_OSD_OP_TRIMTRUNC: | |
451 | case CEPH_OSD_OP_TMAPUP: | |
452 | case CEPH_OSD_OP_TMAPPUT: | |
453 | case CEPH_OSD_OP_TMAPGET: | |
454 | case CEPH_OSD_OP_CREATE: | |
a9f36c3e | 455 | case CEPH_OSD_OP_ROLLBACK: |
a8dd0a37 | 456 | case CEPH_OSD_OP_WATCH: |
4c46459c AE |
457 | case CEPH_OSD_OP_OMAPGETKEYS: |
458 | case CEPH_OSD_OP_OMAPGETVALS: | |
459 | case CEPH_OSD_OP_OMAPGETHEADER: | |
460 | case CEPH_OSD_OP_OMAPGETVALSBYKEYS: | |
4c46459c AE |
461 | case CEPH_OSD_OP_OMAPSETVALS: |
462 | case CEPH_OSD_OP_OMAPSETHEADER: | |
463 | case CEPH_OSD_OP_OMAPCLEAR: | |
464 | case CEPH_OSD_OP_OMAPRMKEYS: | |
465 | case CEPH_OSD_OP_OMAP_CMP: | |
c647b8a8 | 466 | case CEPH_OSD_OP_SETALLOCHINT: |
4c46459c AE |
467 | case CEPH_OSD_OP_CLONERANGE: |
468 | case CEPH_OSD_OP_ASSERT_SRC_VERSION: | |
469 | case CEPH_OSD_OP_SRC_CMPXATTR: | |
a9f36c3e | 470 | case CEPH_OSD_OP_GETXATTR: |
4c46459c | 471 | case CEPH_OSD_OP_GETXATTRS: |
a9f36c3e AE |
472 | case CEPH_OSD_OP_CMPXATTR: |
473 | case CEPH_OSD_OP_SETXATTR: | |
4c46459c AE |
474 | case CEPH_OSD_OP_SETXATTRS: |
475 | case CEPH_OSD_OP_RESETXATTRS: | |
476 | case CEPH_OSD_OP_RMXATTR: | |
477 | case CEPH_OSD_OP_PULL: | |
478 | case CEPH_OSD_OP_PUSH: | |
479 | case CEPH_OSD_OP_BALANCEREADS: | |
480 | case CEPH_OSD_OP_UNBALANCEREADS: | |
481 | case CEPH_OSD_OP_SCRUB: | |
482 | case CEPH_OSD_OP_SCRUB_RESERVE: | |
483 | case CEPH_OSD_OP_SCRUB_UNRESERVE: | |
484 | case CEPH_OSD_OP_SCRUB_STOP: | |
485 | case CEPH_OSD_OP_SCRUB_MAP: | |
486 | case CEPH_OSD_OP_WRLOCK: | |
487 | case CEPH_OSD_OP_WRUNLOCK: | |
488 | case CEPH_OSD_OP_RDLOCK: | |
489 | case CEPH_OSD_OP_RDUNLOCK: | |
490 | case CEPH_OSD_OP_UPLOCK: | |
491 | case CEPH_OSD_OP_DNLOCK: | |
a8dd0a37 | 492 | case CEPH_OSD_OP_CALL: |
4c46459c AE |
493 | case CEPH_OSD_OP_PGLS: |
494 | case CEPH_OSD_OP_PGLS_FILTER: | |
a8dd0a37 AE |
495 | return true; |
496 | default: | |
497 | return false; | |
498 | } | |
499 | } | |
500 | ||
33803f33 AE |
501 | /* |
502 | * This is an osd op init function for opcodes that have no data or | |
503 | * other information associated with them. It also serves as a | |
504 | * common init routine for all the other init functions, below. | |
505 | */ | |
c99d2d4a | 506 | static struct ceph_osd_req_op * |
49719778 | 507 | _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, |
c99d2d4a | 508 | u16 opcode) |
33803f33 | 509 | { |
c99d2d4a AE |
510 | struct ceph_osd_req_op *op; |
511 | ||
512 | BUG_ON(which >= osd_req->r_num_ops); | |
33803f33 AE |
513 | BUG_ON(!osd_req_opcode_valid(opcode)); |
514 | ||
c99d2d4a | 515 | op = &osd_req->r_ops[which]; |
33803f33 | 516 | memset(op, 0, sizeof (*op)); |
33803f33 | 517 | op->op = opcode; |
c99d2d4a AE |
518 | |
519 | return op; | |
33803f33 AE |
520 | } |
521 | ||
49719778 AE |
522 | void osd_req_op_init(struct ceph_osd_request *osd_req, |
523 | unsigned int which, u16 opcode) | |
524 | { | |
525 | (void)_osd_req_op_init(osd_req, which, opcode); | |
526 | } | |
527 | EXPORT_SYMBOL(osd_req_op_init); | |
528 | ||
c99d2d4a AE |
529 | void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
530 | unsigned int which, u16 opcode, | |
33803f33 AE |
531 | u64 offset, u64 length, |
532 | u64 truncate_size, u32 truncate_seq) | |
533 | { | |
49719778 | 534 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); |
33803f33 AE |
535 | size_t payload_len = 0; |
536 | ||
ad7a60de LW |
537 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
538 | opcode != CEPH_OSD_OP_DELETE && opcode != CEPH_OSD_OP_ZERO && | |
539 | opcode != CEPH_OSD_OP_TRUNCATE); | |
33803f33 | 540 | |
33803f33 AE |
541 | op->extent.offset = offset; |
542 | op->extent.length = length; | |
543 | op->extent.truncate_size = truncate_size; | |
544 | op->extent.truncate_seq = truncate_seq; | |
545 | if (opcode == CEPH_OSD_OP_WRITE) | |
546 | payload_len += length; | |
547 | ||
548 | op->payload_len = payload_len; | |
549 | } | |
550 | EXPORT_SYMBOL(osd_req_op_extent_init); | |
551 | ||
c99d2d4a AE |
552 | void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
553 | unsigned int which, u64 length) | |
e5975c7c | 554 | { |
c99d2d4a AE |
555 | struct ceph_osd_req_op *op; |
556 | u64 previous; | |
557 | ||
558 | BUG_ON(which >= osd_req->r_num_ops); | |
559 | op = &osd_req->r_ops[which]; | |
560 | previous = op->extent.length; | |
e5975c7c AE |
561 | |
562 | if (length == previous) | |
563 | return; /* Nothing to do */ | |
564 | BUG_ON(length > previous); | |
565 | ||
566 | op->extent.length = length; | |
567 | op->payload_len -= previous - length; | |
568 | } | |
569 | EXPORT_SYMBOL(osd_req_op_extent_update); | |
570 | ||
c99d2d4a | 571 | void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, |
04017e29 | 572 | u16 opcode, const char *class, const char *method) |
33803f33 | 573 | { |
49719778 | 574 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); |
5f562df5 | 575 | struct ceph_pagelist *pagelist; |
33803f33 AE |
576 | size_t payload_len = 0; |
577 | size_t size; | |
578 | ||
579 | BUG_ON(opcode != CEPH_OSD_OP_CALL); | |
580 | ||
5f562df5 AE |
581 | pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); |
582 | BUG_ON(!pagelist); | |
583 | ceph_pagelist_init(pagelist); | |
584 | ||
33803f33 AE |
585 | op->cls.class_name = class; |
586 | size = strlen(class); | |
587 | BUG_ON(size > (size_t) U8_MAX); | |
588 | op->cls.class_len = size; | |
5f562df5 | 589 | ceph_pagelist_append(pagelist, class, size); |
33803f33 AE |
590 | payload_len += size; |
591 | ||
592 | op->cls.method_name = method; | |
593 | size = strlen(method); | |
594 | BUG_ON(size > (size_t) U8_MAX); | |
595 | op->cls.method_len = size; | |
5f562df5 | 596 | ceph_pagelist_append(pagelist, method, size); |
33803f33 AE |
597 | payload_len += size; |
598 | ||
a4ce40a9 | 599 | osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); |
5f562df5 | 600 | |
33803f33 AE |
601 | op->cls.argc = 0; /* currently unused */ |
602 | ||
603 | op->payload_len = payload_len; | |
604 | } | |
605 | EXPORT_SYMBOL(osd_req_op_cls_init); | |
8c042b0d | 606 | |
c99d2d4a AE |
607 | void osd_req_op_watch_init(struct ceph_osd_request *osd_req, |
608 | unsigned int which, u16 opcode, | |
33803f33 AE |
609 | u64 cookie, u64 version, int flag) |
610 | { | |
49719778 | 611 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); |
33803f33 | 612 | |
c99d2d4a | 613 | BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); |
33803f33 AE |
614 | |
615 | op->watch.cookie = cookie; | |
9ef1ee5a | 616 | op->watch.ver = version; |
33803f33 | 617 | if (opcode == CEPH_OSD_OP_WATCH && flag) |
c99d2d4a | 618 | op->watch.flag = (u8)1; |
33803f33 AE |
619 | } |
620 | EXPORT_SYMBOL(osd_req_op_watch_init); | |
621 | ||
c647b8a8 ID |
622 | void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, |
623 | unsigned int which, | |
624 | u64 expected_object_size, | |
625 | u64 expected_write_size) | |
626 | { | |
627 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, | |
628 | CEPH_OSD_OP_SETALLOCHINT); | |
629 | ||
630 | op->alloc_hint.expected_object_size = expected_object_size; | |
631 | op->alloc_hint.expected_write_size = expected_write_size; | |
632 | ||
633 | /* | |
634 | * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed | |
635 | * not worth a feature bit. Set FAILOK per-op flag to make | |
636 | * sure older osds don't trip over an unsupported opcode. | |
637 | */ | |
638 | op->flags |= CEPH_OSD_OP_FLAG_FAILOK; | |
639 | } | |
640 | EXPORT_SYMBOL(osd_req_op_alloc_hint_init); | |
641 | ||
90af3602 | 642 | static void ceph_osdc_msg_data_add(struct ceph_msg *msg, |
ec9123c5 AE |
643 | struct ceph_osd_data *osd_data) |
644 | { | |
645 | u64 length = ceph_osd_data_length(osd_data); | |
646 | ||
647 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { | |
648 | BUG_ON(length > (u64) SIZE_MAX); | |
649 | if (length) | |
90af3602 | 650 | ceph_msg_data_add_pages(msg, osd_data->pages, |
ec9123c5 AE |
651 | length, osd_data->alignment); |
652 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { | |
653 | BUG_ON(!length); | |
90af3602 | 654 | ceph_msg_data_add_pagelist(msg, osd_data->pagelist); |
ec9123c5 AE |
655 | #ifdef CONFIG_BLOCK |
656 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { | |
90af3602 | 657 | ceph_msg_data_add_bio(msg, osd_data->bio, length); |
ec9123c5 AE |
658 | #endif |
659 | } else { | |
660 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); | |
661 | } | |
662 | } | |
663 | ||
a8dd0a37 | 664 | static u64 osd_req_encode_op(struct ceph_osd_request *req, |
79528734 | 665 | struct ceph_osd_op *dst, unsigned int which) |
a8dd0a37 | 666 | { |
79528734 | 667 | struct ceph_osd_req_op *src; |
04017e29 | 668 | struct ceph_osd_data *osd_data; |
54d50649 | 669 | u64 request_data_len = 0; |
04017e29 | 670 | u64 data_length; |
a8dd0a37 | 671 | |
79528734 AE |
672 | BUG_ON(which >= req->r_num_ops); |
673 | src = &req->r_ops[which]; | |
a8dd0a37 AE |
674 | if (WARN_ON(!osd_req_opcode_valid(src->op))) { |
675 | pr_err("unrecognized osd opcode %d\n", src->op); | |
676 | ||
677 | return 0; | |
678 | } | |
679 | ||
680 | switch (src->op) { | |
681 | case CEPH_OSD_OP_STAT: | |
49719778 AE |
682 | osd_data = &src->raw_data_in; |
683 | ceph_osdc_msg_data_add(req->r_reply, osd_data); | |
a8dd0a37 AE |
684 | break; |
685 | case CEPH_OSD_OP_READ: | |
686 | case CEPH_OSD_OP_WRITE: | |
ad7a60de LW |
687 | case CEPH_OSD_OP_ZERO: |
688 | case CEPH_OSD_OP_DELETE: | |
689 | case CEPH_OSD_OP_TRUNCATE: | |
a8dd0a37 | 690 | if (src->op == CEPH_OSD_OP_WRITE) |
54d50649 | 691 | request_data_len = src->extent.length; |
a8dd0a37 AE |
692 | dst->extent.offset = cpu_to_le64(src->extent.offset); |
693 | dst->extent.length = cpu_to_le64(src->extent.length); | |
694 | dst->extent.truncate_size = | |
695 | cpu_to_le64(src->extent.truncate_size); | |
696 | dst->extent.truncate_seq = | |
697 | cpu_to_le32(src->extent.truncate_seq); | |
04017e29 | 698 | osd_data = &src->extent.osd_data; |
5476492f | 699 | if (src->op == CEPH_OSD_OP_WRITE) |
04017e29 | 700 | ceph_osdc_msg_data_add(req->r_request, osd_data); |
5476492f | 701 | else |
04017e29 | 702 | ceph_osdc_msg_data_add(req->r_reply, osd_data); |
a8dd0a37 AE |
703 | break; |
704 | case CEPH_OSD_OP_CALL: | |
a8dd0a37 AE |
705 | dst->cls.class_len = src->cls.class_len; |
706 | dst->cls.method_len = src->cls.method_len; | |
04017e29 AE |
707 | osd_data = &src->cls.request_info; |
708 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
709 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); | |
710 | request_data_len = osd_data->pagelist->length; | |
711 | ||
712 | osd_data = &src->cls.request_data; | |
713 | data_length = ceph_osd_data_length(osd_data); | |
714 | if (data_length) { | |
715 | BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); | |
716 | dst->cls.indata_len = cpu_to_le32(data_length); | |
717 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
718 | src->payload_len += data_length; | |
719 | request_data_len += data_length; | |
720 | } | |
721 | osd_data = &src->cls.response_data; | |
722 | ceph_osdc_msg_data_add(req->r_reply, osd_data); | |
a8dd0a37 AE |
723 | break; |
724 | case CEPH_OSD_OP_STARTSYNC: | |
725 | break; | |
726 | case CEPH_OSD_OP_NOTIFY_ACK: | |
727 | case CEPH_OSD_OP_WATCH: | |
728 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
729 | dst->watch.ver = cpu_to_le64(src->watch.ver); | |
730 | dst->watch.flag = src->watch.flag; | |
731 | break; | |
c647b8a8 ID |
732 | case CEPH_OSD_OP_SETALLOCHINT: |
733 | dst->alloc_hint.expected_object_size = | |
734 | cpu_to_le64(src->alloc_hint.expected_object_size); | |
735 | dst->alloc_hint.expected_write_size = | |
736 | cpu_to_le64(src->alloc_hint.expected_write_size); | |
737 | break; | |
a8dd0a37 | 738 | default: |
4c46459c | 739 | pr_err("unsupported osd opcode %s\n", |
8f63ca2d | 740 | ceph_osd_op_name(src->op)); |
4c46459c | 741 | WARN_ON(1); |
a8dd0a37 AE |
742 | |
743 | return 0; | |
68b4476b | 744 | } |
7b25bf5f | 745 | |
a8dd0a37 | 746 | dst->op = cpu_to_le16(src->op); |
7b25bf5f | 747 | dst->flags = cpu_to_le32(src->flags); |
68b4476b | 748 | dst->payload_len = cpu_to_le32(src->payload_len); |
175face2 | 749 | |
54d50649 | 750 | return request_data_len; |
68b4476b YS |
751 | } |
752 | ||
3499e8a5 YS |
753 | /* |
754 | * build new request AND message, calculate layout, and adjust file | |
755 | * extent as needed. | |
756 | * | |
757 | * if the file was recently truncated, we include information about its | |
758 | * old and new size so that the object can be updated appropriately. (we | |
759 | * avoid synchronously deleting truncated objects because it's slow.) | |
760 | * | |
761 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
762 | * data quickly. | |
763 | */ | |
764 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
765 | struct ceph_file_layout *layout, | |
766 | struct ceph_vino vino, | |
acead002 | 767 | u64 off, u64 *plen, int num_ops, |
3499e8a5 YS |
768 | int opcode, int flags, |
769 | struct ceph_snap_context *snapc, | |
3499e8a5 YS |
770 | u32 truncate_seq, |
771 | u64 truncate_size, | |
153e5167 | 772 | bool use_mempool) |
3499e8a5 | 773 | { |
68b4476b | 774 | struct ceph_osd_request *req; |
75d1c941 AE |
775 | u64 objnum = 0; |
776 | u64 objoff = 0; | |
777 | u64 objlen = 0; | |
d18d1e28 AE |
778 | u32 object_size; |
779 | u64 object_base; | |
6816282d | 780 | int r; |
68b4476b | 781 | |
ad7a60de LW |
782 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
783 | opcode != CEPH_OSD_OP_DELETE && opcode != CEPH_OSD_OP_ZERO && | |
784 | opcode != CEPH_OSD_OP_TRUNCATE); | |
68b4476b | 785 | |
acead002 | 786 | req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, |
ae7ca4a3 | 787 | GFP_NOFS); |
4ad12621 | 788 | if (!req) |
6816282d | 789 | return ERR_PTR(-ENOMEM); |
79528734 | 790 | |
d178a9e7 | 791 | req->r_flags = flags; |
3499e8a5 YS |
792 | |
793 | /* calculate max write size */ | |
a19dadfb | 794 | r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); |
3ff5f385 AE |
795 | if (r < 0) { |
796 | ceph_osdc_put_request(req); | |
6816282d | 797 | return ERR_PTR(r); |
3ff5f385 | 798 | } |
a19dadfb | 799 | |
d18d1e28 AE |
800 | object_size = le32_to_cpu(layout->fl_object_size); |
801 | object_base = off - objoff; | |
ccca4e37 YZ |
802 | if (!(truncate_seq == 1 && truncate_size == -1ULL)) { |
803 | if (truncate_size <= object_base) { | |
804 | truncate_size = 0; | |
805 | } else { | |
806 | truncate_size -= object_base; | |
807 | if (truncate_size > object_size) | |
808 | truncate_size = object_size; | |
809 | } | |
a19dadfb | 810 | } |
d18d1e28 | 811 | |
c99d2d4a | 812 | osd_req_op_extent_init(req, 0, opcode, objoff, objlen, |
b0270324 | 813 | truncate_size, truncate_seq); |
8c042b0d | 814 | |
acead002 AE |
815 | /* |
816 | * A second op in the ops array means the caller wants to | |
817 | * also issue a include a 'startsync' command so that the | |
818 | * osd will flush data quickly. | |
819 | */ | |
820 | if (num_ops > 1) | |
c99d2d4a | 821 | osd_req_op_init(req, 1, CEPH_OSD_OP_STARTSYNC); |
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); | |
a255651d | 1055 | if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { |
79494d1b SW |
1056 | struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; |
1057 | ||
27859f97 | 1058 | ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); |
f24e9980 | 1059 | kfree(osd); |
79494d1b | 1060 | } |
f24e9980 SW |
1061 | } |
1062 | ||
1063 | /* | |
1064 | * remove an osd from our map | |
1065 | */ | |
f5a2041b | 1066 | static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 1067 | { |
f5a2041b | 1068 | dout("__remove_osd %p\n", osd); |
f24e9980 | 1069 | BUG_ON(!list_empty(&osd->o_requests)); |
7c6e6fc5 ID |
1070 | BUG_ON(!list_empty(&osd->o_linger_requests)); |
1071 | ||
f24e9980 | 1072 | rb_erase(&osd->o_node, &osdc->osds); |
f5a2041b | 1073 | list_del_init(&osd->o_osd_lru); |
f24e9980 SW |
1074 | ceph_con_close(&osd->o_con); |
1075 | put_osd(osd); | |
1076 | } | |
1077 | ||
aca420bc SW |
1078 | static void remove_all_osds(struct ceph_osd_client *osdc) |
1079 | { | |
048a9d2d | 1080 | dout("%s %p\n", __func__, osdc); |
aca420bc SW |
1081 | mutex_lock(&osdc->request_mutex); |
1082 | while (!RB_EMPTY_ROOT(&osdc->osds)) { | |
1083 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
1084 | struct ceph_osd, o_node); | |
1085 | __remove_osd(osdc, osd); | |
1086 | } | |
1087 | mutex_unlock(&osdc->request_mutex); | |
1088 | } | |
1089 | ||
f5a2041b YS |
1090 | static void __move_osd_to_lru(struct ceph_osd_client *osdc, |
1091 | struct ceph_osd *osd) | |
1092 | { | |
bbf37ec3 | 1093 | dout("%s %p\n", __func__, osd); |
f5a2041b | 1094 | BUG_ON(!list_empty(&osd->o_osd_lru)); |
bbf37ec3 | 1095 | |
f5a2041b | 1096 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); |
3d14c5d2 | 1097 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; |
f5a2041b YS |
1098 | } |
1099 | ||
bbf37ec3 ID |
1100 | static void maybe_move_osd_to_lru(struct ceph_osd_client *osdc, |
1101 | struct ceph_osd *osd) | |
1102 | { | |
1103 | dout("%s %p\n", __func__, osd); | |
1104 | ||
1105 | if (list_empty(&osd->o_requests) && | |
1106 | list_empty(&osd->o_linger_requests)) | |
1107 | __move_osd_to_lru(osdc, osd); | |
1108 | } | |
1109 | ||
f5a2041b YS |
1110 | static void __remove_osd_from_lru(struct ceph_osd *osd) |
1111 | { | |
1112 | dout("__remove_osd_from_lru %p\n", osd); | |
1113 | if (!list_empty(&osd->o_osd_lru)) | |
1114 | list_del_init(&osd->o_osd_lru); | |
1115 | } | |
1116 | ||
aca420bc | 1117 | static void remove_old_osds(struct ceph_osd_client *osdc) |
f5a2041b YS |
1118 | { |
1119 | struct ceph_osd *osd, *nosd; | |
1120 | ||
1121 | dout("__remove_old_osds %p\n", osdc); | |
1122 | mutex_lock(&osdc->request_mutex); | |
1123 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { | |
aca420bc | 1124 | if (time_before(jiffies, osd->lru_ttl)) |
f5a2041b YS |
1125 | break; |
1126 | __remove_osd(osdc, osd); | |
1127 | } | |
1128 | mutex_unlock(&osdc->request_mutex); | |
1129 | } | |
1130 | ||
f24e9980 SW |
1131 | /* |
1132 | * reset osd connect | |
1133 | */ | |
f5a2041b | 1134 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 1135 | { |
c3acb181 | 1136 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 1137 | |
f5a2041b | 1138 | dout("__reset_osd %p osd%d\n", osd, osd->o_osd); |
a40c4f10 YS |
1139 | if (list_empty(&osd->o_requests) && |
1140 | list_empty(&osd->o_linger_requests)) { | |
f5a2041b | 1141 | __remove_osd(osdc, osd); |
c3acb181 AE |
1142 | |
1143 | return -ENODEV; | |
1144 | } | |
1145 | ||
1146 | peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; | |
1147 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && | |
1148 | !ceph_con_opened(&osd->o_con)) { | |
1149 | struct ceph_osd_request *req; | |
1150 | ||
0b4af2e8 ID |
1151 | dout("osd addr hasn't changed and connection never opened, " |
1152 | "letting msgr retry\n"); | |
87b315a5 SW |
1153 | /* touch each r_stamp for handle_timeout()'s benfit */ |
1154 | list_for_each_entry(req, &osd->o_requests, r_osd_item) | |
1155 | req->r_stamp = jiffies; | |
c3acb181 AE |
1156 | |
1157 | return -EAGAIN; | |
f24e9980 | 1158 | } |
c3acb181 AE |
1159 | |
1160 | ceph_con_close(&osd->o_con); | |
1161 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
1162 | osd->o_incarnation++; | |
1163 | ||
1164 | return 0; | |
f24e9980 SW |
1165 | } |
1166 | ||
1167 | static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) | |
1168 | { | |
1169 | struct rb_node **p = &osdc->osds.rb_node; | |
1170 | struct rb_node *parent = NULL; | |
1171 | struct ceph_osd *osd = NULL; | |
1172 | ||
aca420bc | 1173 | dout("__insert_osd %p osd%d\n", new, new->o_osd); |
f24e9980 SW |
1174 | while (*p) { |
1175 | parent = *p; | |
1176 | osd = rb_entry(parent, struct ceph_osd, o_node); | |
1177 | if (new->o_osd < osd->o_osd) | |
1178 | p = &(*p)->rb_left; | |
1179 | else if (new->o_osd > osd->o_osd) | |
1180 | p = &(*p)->rb_right; | |
1181 | else | |
1182 | BUG(); | |
1183 | } | |
1184 | ||
1185 | rb_link_node(&new->o_node, parent, p); | |
1186 | rb_insert_color(&new->o_node, &osdc->osds); | |
1187 | } | |
1188 | ||
1189 | static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) | |
1190 | { | |
1191 | struct ceph_osd *osd; | |
1192 | struct rb_node *n = osdc->osds.rb_node; | |
1193 | ||
1194 | while (n) { | |
1195 | osd = rb_entry(n, struct ceph_osd, o_node); | |
1196 | if (o < osd->o_osd) | |
1197 | n = n->rb_left; | |
1198 | else if (o > osd->o_osd) | |
1199 | n = n->rb_right; | |
1200 | else | |
1201 | return osd; | |
1202 | } | |
1203 | return NULL; | |
1204 | } | |
1205 | ||
422d2cb8 YS |
1206 | static void __schedule_osd_timeout(struct ceph_osd_client *osdc) |
1207 | { | |
1208 | schedule_delayed_work(&osdc->timeout_work, | |
3d14c5d2 | 1209 | osdc->client->options->osd_keepalive_timeout * HZ); |
422d2cb8 YS |
1210 | } |
1211 | ||
1212 | static void __cancel_osd_timeout(struct ceph_osd_client *osdc) | |
1213 | { | |
1214 | cancel_delayed_work(&osdc->timeout_work); | |
1215 | } | |
f24e9980 SW |
1216 | |
1217 | /* | |
1218 | * Register request, assign tid. If this is the first request, set up | |
1219 | * the timeout event. | |
1220 | */ | |
a40c4f10 YS |
1221 | static void __register_request(struct ceph_osd_client *osdc, |
1222 | struct ceph_osd_request *req) | |
f24e9980 | 1223 | { |
f24e9980 | 1224 | req->r_tid = ++osdc->last_tid; |
6df058c0 | 1225 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); |
77f38e0e | 1226 | dout("__register_request %p tid %lld\n", req, req->r_tid); |
f24e9980 SW |
1227 | __insert_request(osdc, req); |
1228 | ceph_osdc_get_request(req); | |
1229 | osdc->num_requests++; | |
f24e9980 | 1230 | if (osdc->num_requests == 1) { |
422d2cb8 YS |
1231 | dout(" first request, scheduling timeout\n"); |
1232 | __schedule_osd_timeout(osdc); | |
f24e9980 | 1233 | } |
a40c4f10 YS |
1234 | } |
1235 | ||
f24e9980 SW |
1236 | /* |
1237 | * called under osdc->request_mutex | |
1238 | */ | |
1239 | static void __unregister_request(struct ceph_osd_client *osdc, | |
1240 | struct ceph_osd_request *req) | |
1241 | { | |
35f9f8a0 SW |
1242 | if (RB_EMPTY_NODE(&req->r_node)) { |
1243 | dout("__unregister_request %p tid %lld not registered\n", | |
1244 | req, req->r_tid); | |
1245 | return; | |
1246 | } | |
1247 | ||
f24e9980 SW |
1248 | dout("__unregister_request %p tid %lld\n", req, req->r_tid); |
1249 | rb_erase(&req->r_node, &osdc->requests); | |
6562d661 | 1250 | RB_CLEAR_NODE(&req->r_node); |
f24e9980 SW |
1251 | osdc->num_requests--; |
1252 | ||
0ba6478d SW |
1253 | if (req->r_osd) { |
1254 | /* make sure the original request isn't in flight. */ | |
6740a845 | 1255 | ceph_msg_revoke(req->r_request); |
0ba6478d SW |
1256 | |
1257 | list_del_init(&req->r_osd_item); | |
bbf37ec3 | 1258 | maybe_move_osd_to_lru(osdc, req->r_osd); |
4f23409e | 1259 | if (list_empty(&req->r_linger_osd_item)) |
a40c4f10 | 1260 | req->r_osd = NULL; |
0ba6478d | 1261 | } |
f24e9980 | 1262 | |
7d5f2481 | 1263 | list_del_init(&req->r_req_lru_item); |
f24e9980 SW |
1264 | ceph_osdc_put_request(req); |
1265 | ||
422d2cb8 YS |
1266 | if (osdc->num_requests == 0) { |
1267 | dout(" no requests, canceling timeout\n"); | |
1268 | __cancel_osd_timeout(osdc); | |
f24e9980 SW |
1269 | } |
1270 | } | |
1271 | ||
1272 | /* | |
1273 | * Cancel a previously queued request message | |
1274 | */ | |
1275 | static void __cancel_request(struct ceph_osd_request *req) | |
1276 | { | |
6bc18876 | 1277 | if (req->r_sent && req->r_osd) { |
6740a845 | 1278 | ceph_msg_revoke(req->r_request); |
f24e9980 SW |
1279 | req->r_sent = 0; |
1280 | } | |
1281 | } | |
1282 | ||
a40c4f10 YS |
1283 | static void __register_linger_request(struct ceph_osd_client *osdc, |
1284 | struct ceph_osd_request *req) | |
1285 | { | |
af593064 ID |
1286 | dout("%s %p tid %llu\n", __func__, req, req->r_tid); |
1287 | WARN_ON(!req->r_linger); | |
1288 | ||
96e4dac6 | 1289 | ceph_osdc_get_request(req); |
a40c4f10 | 1290 | list_add_tail(&req->r_linger_item, &osdc->req_linger); |
6194ea89 | 1291 | if (req->r_osd) |
1d0326b1 | 1292 | list_add_tail(&req->r_linger_osd_item, |
6194ea89 | 1293 | &req->r_osd->o_linger_requests); |
a40c4f10 YS |
1294 | } |
1295 | ||
1296 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
1297 | struct ceph_osd_request *req) | |
1298 | { | |
af593064 ID |
1299 | WARN_ON(!req->r_linger); |
1300 | ||
1301 | if (list_empty(&req->r_linger_item)) { | |
1302 | dout("%s %p tid %llu not registered\n", __func__, req, | |
1303 | req->r_tid); | |
1304 | return; | |
1305 | } | |
1306 | ||
1307 | dout("%s %p tid %llu\n", __func__, req, req->r_tid); | |
61c74035 | 1308 | list_del_init(&req->r_linger_item); |
af593064 | 1309 | |
a40c4f10 | 1310 | if (req->r_osd) { |
1d0326b1 | 1311 | list_del_init(&req->r_linger_osd_item); |
bbf37ec3 | 1312 | maybe_move_osd_to_lru(osdc, req->r_osd); |
fbdb9190 SW |
1313 | if (list_empty(&req->r_osd_item)) |
1314 | req->r_osd = NULL; | |
a40c4f10 | 1315 | } |
96e4dac6 | 1316 | ceph_osdc_put_request(req); |
a40c4f10 YS |
1317 | } |
1318 | ||
a40c4f10 YS |
1319 | void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, |
1320 | struct ceph_osd_request *req) | |
1321 | { | |
1322 | if (!req->r_linger) { | |
1323 | dout("set_request_linger %p\n", req); | |
1324 | req->r_linger = 1; | |
a40c4f10 YS |
1325 | } |
1326 | } | |
1327 | EXPORT_SYMBOL(ceph_osdc_set_request_linger); | |
1328 | ||
d29adb34 JD |
1329 | /* |
1330 | * Returns whether a request should be blocked from being sent | |
1331 | * based on the current osdmap and osd_client settings. | |
1332 | * | |
1333 | * Caller should hold map_sem for read. | |
1334 | */ | |
1335 | static bool __req_should_be_paused(struct ceph_osd_client *osdc, | |
1336 | struct ceph_osd_request *req) | |
1337 | { | |
1338 | bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); | |
1339 | bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || | |
1340 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); | |
1341 | return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) || | |
1342 | (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr); | |
1343 | } | |
1344 | ||
17a13e40 ID |
1345 | /* |
1346 | * Calculate mapping of a request to a PG. Takes tiering into account. | |
1347 | */ | |
1348 | static int __calc_request_pg(struct ceph_osdmap *osdmap, | |
1349 | struct ceph_osd_request *req, | |
1350 | struct ceph_pg *pg_out) | |
1351 | { | |
205ee118 ID |
1352 | bool need_check_tiering; |
1353 | ||
1354 | need_check_tiering = false; | |
1355 | if (req->r_target_oloc.pool == -1) { | |
1356 | req->r_target_oloc = req->r_base_oloc; /* struct */ | |
1357 | need_check_tiering = true; | |
1358 | } | |
1359 | if (req->r_target_oid.name_len == 0) { | |
1360 | ceph_oid_copy(&req->r_target_oid, &req->r_base_oid); | |
1361 | need_check_tiering = true; | |
1362 | } | |
1363 | ||
1364 | if (need_check_tiering && | |
1365 | (req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { | |
17a13e40 ID |
1366 | struct ceph_pg_pool_info *pi; |
1367 | ||
205ee118 | 1368 | pi = ceph_pg_pool_by_id(osdmap, req->r_target_oloc.pool); |
17a13e40 ID |
1369 | if (pi) { |
1370 | if ((req->r_flags & CEPH_OSD_FLAG_READ) && | |
1371 | pi->read_tier >= 0) | |
205ee118 | 1372 | req->r_target_oloc.pool = pi->read_tier; |
17a13e40 ID |
1373 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && |
1374 | pi->write_tier >= 0) | |
205ee118 | 1375 | req->r_target_oloc.pool = pi->write_tier; |
17a13e40 ID |
1376 | } |
1377 | /* !pi is caught in ceph_oloc_oid_to_pg() */ | |
1378 | } | |
1379 | ||
205ee118 ID |
1380 | return ceph_oloc_oid_to_pg(osdmap, &req->r_target_oloc, |
1381 | &req->r_target_oid, pg_out); | |
17a13e40 ID |
1382 | } |
1383 | ||
f671b581 ID |
1384 | static void __enqueue_request(struct ceph_osd_request *req) |
1385 | { | |
1386 | struct ceph_osd_client *osdc = req->r_osdc; | |
1387 | ||
1388 | dout("%s %p tid %llu to osd%d\n", __func__, req, req->r_tid, | |
1389 | req->r_osd ? req->r_osd->o_osd : -1); | |
1390 | ||
1391 | if (req->r_osd) { | |
1392 | __remove_osd_from_lru(req->r_osd); | |
1393 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); | |
1394 | list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); | |
1395 | } else { | |
1396 | list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); | |
1397 | } | |
1398 | } | |
1399 | ||
f24e9980 SW |
1400 | /* |
1401 | * Pick an osd (the first 'up' osd in the pg), allocate the osd struct | |
1402 | * (as needed), and set the request r_osd appropriately. If there is | |
25985edc | 1403 | * no up osd, set r_osd to NULL. Move the request to the appropriate list |
6f6c7006 | 1404 | * (unsent, homeless) or leave on in-flight lru. |
f24e9980 SW |
1405 | * |
1406 | * Return 0 if unchanged, 1 if changed, or negative on error. | |
1407 | * | |
1408 | * Caller should hold map_sem for read and request_mutex. | |
1409 | */ | |
6f6c7006 | 1410 | static int __map_request(struct ceph_osd_client *osdc, |
38d6453c | 1411 | struct ceph_osd_request *req, int force_resend) |
f24e9980 | 1412 | { |
5b191d99 | 1413 | struct ceph_pg pgid; |
d85b7056 | 1414 | int acting[CEPH_PG_MAX_SIZE]; |
8008ab10 | 1415 | int num, o; |
f24e9980 | 1416 | int err; |
d29adb34 | 1417 | bool was_paused; |
f24e9980 | 1418 | |
6f6c7006 | 1419 | dout("map_request %p tid %lld\n", req, req->r_tid); |
17a13e40 ID |
1420 | |
1421 | err = __calc_request_pg(osdc->osdmap, req, &pgid); | |
6f6c7006 SW |
1422 | if (err) { |
1423 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f24e9980 | 1424 | return err; |
6f6c7006 | 1425 | } |
7740a42f SW |
1426 | req->r_pgid = pgid; |
1427 | ||
8008ab10 ID |
1428 | num = ceph_calc_pg_acting(osdc->osdmap, pgid, acting, &o); |
1429 | if (num < 0) | |
1430 | num = 0; | |
f24e9980 | 1431 | |
d29adb34 JD |
1432 | was_paused = req->r_paused; |
1433 | req->r_paused = __req_should_be_paused(osdc, req); | |
1434 | if (was_paused && !req->r_paused) | |
1435 | force_resend = 1; | |
1436 | ||
38d6453c SW |
1437 | if ((!force_resend && |
1438 | req->r_osd && req->r_osd->o_osd == o && | |
d85b7056 SW |
1439 | req->r_sent >= req->r_osd->o_incarnation && |
1440 | req->r_num_pg_osds == num && | |
1441 | memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || | |
d29adb34 JD |
1442 | (req->r_osd == NULL && o == -1) || |
1443 | req->r_paused) | |
f24e9980 SW |
1444 | return 0; /* no change */ |
1445 | ||
5b191d99 SW |
1446 | dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", |
1447 | req->r_tid, pgid.pool, pgid.seed, o, | |
f24e9980 SW |
1448 | req->r_osd ? req->r_osd->o_osd : -1); |
1449 | ||
d85b7056 SW |
1450 | /* record full pg acting set */ |
1451 | memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); | |
1452 | req->r_num_pg_osds = num; | |
1453 | ||
f24e9980 SW |
1454 | if (req->r_osd) { |
1455 | __cancel_request(req); | |
1456 | list_del_init(&req->r_osd_item); | |
f24e9980 SW |
1457 | req->r_osd = NULL; |
1458 | } | |
1459 | ||
1460 | req->r_osd = __lookup_osd(osdc, o); | |
1461 | if (!req->r_osd && o >= 0) { | |
c99eb1c7 | 1462 | err = -ENOMEM; |
e10006f8 | 1463 | req->r_osd = create_osd(osdc, o); |
6f6c7006 SW |
1464 | if (!req->r_osd) { |
1465 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
c99eb1c7 | 1466 | goto out; |
6f6c7006 | 1467 | } |
f24e9980 | 1468 | |
6f6c7006 | 1469 | dout("map_request osd %p is osd%d\n", req->r_osd, o); |
f24e9980 SW |
1470 | __insert_osd(osdc, req->r_osd); |
1471 | ||
b7a9e5dd SW |
1472 | ceph_con_open(&req->r_osd->o_con, |
1473 | CEPH_ENTITY_TYPE_OSD, o, | |
1474 | &osdc->osdmap->osd_addr[o]); | |
f24e9980 SW |
1475 | } |
1476 | ||
f671b581 | 1477 | __enqueue_request(req); |
d85b7056 | 1478 | err = 1; /* osd or pg changed */ |
f24e9980 SW |
1479 | |
1480 | out: | |
f24e9980 SW |
1481 | return err; |
1482 | } | |
1483 | ||
1484 | /* | |
1485 | * caller should hold map_sem (for read) and request_mutex | |
1486 | */ | |
56e925b6 SW |
1487 | static void __send_request(struct ceph_osd_client *osdc, |
1488 | struct ceph_osd_request *req) | |
f24e9980 | 1489 | { |
1b83bef2 | 1490 | void *p; |
f24e9980 | 1491 | |
1b83bef2 SW |
1492 | dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", |
1493 | req, req->r_tid, req->r_osd->o_osd, req->r_flags, | |
1494 | (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); | |
1495 | ||
1496 | /* fill in message content that changes each time we send it */ | |
1497 | put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); | |
1498 | put_unaligned_le32(req->r_flags, req->r_request_flags); | |
205ee118 | 1499 | put_unaligned_le64(req->r_target_oloc.pool, req->r_request_pool); |
1b83bef2 SW |
1500 | p = req->r_request_pgid; |
1501 | ceph_encode_64(&p, req->r_pgid.pool); | |
1502 | ceph_encode_32(&p, req->r_pgid.seed); | |
1503 | put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ | |
1504 | memcpy(req->r_request_reassert_version, &req->r_reassert_version, | |
1505 | sizeof(req->r_reassert_version)); | |
2169aea6 | 1506 | |
3dd72fc0 | 1507 | req->r_stamp = jiffies; |
07a27e22 | 1508 | list_move_tail(&req->r_req_lru_item, &osdc->req_lru); |
f24e9980 SW |
1509 | |
1510 | ceph_msg_get(req->r_request); /* send consumes a ref */ | |
26be8808 | 1511 | |
f24e9980 | 1512 | req->r_sent = req->r_osd->o_incarnation; |
26be8808 AE |
1513 | |
1514 | ceph_con_send(&req->r_osd->o_con, req->r_request); | |
f24e9980 SW |
1515 | } |
1516 | ||
6f6c7006 SW |
1517 | /* |
1518 | * Send any requests in the queue (req_unsent). | |
1519 | */ | |
f9d25199 | 1520 | static void __send_queued(struct ceph_osd_client *osdc) |
6f6c7006 SW |
1521 | { |
1522 | struct ceph_osd_request *req, *tmp; | |
1523 | ||
f9d25199 AE |
1524 | dout("__send_queued\n"); |
1525 | list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) | |
6f6c7006 | 1526 | __send_request(osdc, req); |
6f6c7006 SW |
1527 | } |
1528 | ||
0bbfdfe8 ID |
1529 | /* |
1530 | * Caller should hold map_sem for read and request_mutex. | |
1531 | */ | |
1532 | static int __ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
1533 | struct ceph_osd_request *req, | |
1534 | bool nofail) | |
1535 | { | |
1536 | int rc; | |
1537 | ||
1538 | __register_request(osdc, req); | |
1539 | req->r_sent = 0; | |
1540 | req->r_got_reply = 0; | |
1541 | rc = __map_request(osdc, req, 0); | |
1542 | if (rc < 0) { | |
1543 | if (nofail) { | |
1544 | dout("osdc_start_request failed map, " | |
1545 | " will retry %lld\n", req->r_tid); | |
1546 | rc = 0; | |
1547 | } else { | |
1548 | __unregister_request(osdc, req); | |
1549 | } | |
1550 | return rc; | |
1551 | } | |
1552 | ||
1553 | if (req->r_osd == NULL) { | |
1554 | dout("send_request %p no up osds in pg\n", req); | |
1555 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1556 | } else { | |
1557 | __send_queued(osdc); | |
1558 | } | |
1559 | ||
1560 | return 0; | |
1561 | } | |
1562 | ||
f24e9980 SW |
1563 | /* |
1564 | * Timeout callback, called every N seconds when 1 or more osd | |
1565 | * requests has been active for more than N seconds. When this | |
1566 | * happens, we ping all OSDs with requests who have timed out to | |
1567 | * ensure any communications channel reset is detected. Reset the | |
1568 | * request timeouts another N seconds in the future as we go. | |
1569 | * Reschedule the timeout event another N seconds in future (unless | |
1570 | * there are no open requests). | |
1571 | */ | |
1572 | static void handle_timeout(struct work_struct *work) | |
1573 | { | |
1574 | struct ceph_osd_client *osdc = | |
1575 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
83aff95e | 1576 | struct ceph_osd_request *req; |
f24e9980 | 1577 | struct ceph_osd *osd; |
422d2cb8 | 1578 | unsigned long keepalive = |
3d14c5d2 | 1579 | osdc->client->options->osd_keepalive_timeout * HZ; |
422d2cb8 | 1580 | struct list_head slow_osds; |
f24e9980 SW |
1581 | dout("timeout\n"); |
1582 | down_read(&osdc->map_sem); | |
1583 | ||
1584 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1585 | ||
1586 | mutex_lock(&osdc->request_mutex); | |
f24e9980 | 1587 | |
422d2cb8 YS |
1588 | /* |
1589 | * ping osds that are a bit slow. this ensures that if there | |
1590 | * is a break in the TCP connection we will notice, and reopen | |
1591 | * a connection with that osd (from the fault callback). | |
1592 | */ | |
1593 | INIT_LIST_HEAD(&slow_osds); | |
1594 | list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { | |
3dd72fc0 | 1595 | if (time_before(jiffies, req->r_stamp + keepalive)) |
422d2cb8 YS |
1596 | break; |
1597 | ||
1598 | osd = req->r_osd; | |
1599 | BUG_ON(!osd); | |
1600 | dout(" tid %llu is slow, will send keepalive on osd%d\n", | |
f24e9980 | 1601 | req->r_tid, osd->o_osd); |
422d2cb8 YS |
1602 | list_move_tail(&osd->o_keepalive_item, &slow_osds); |
1603 | } | |
1604 | while (!list_empty(&slow_osds)) { | |
1605 | osd = list_entry(slow_osds.next, struct ceph_osd, | |
1606 | o_keepalive_item); | |
1607 | list_del_init(&osd->o_keepalive_item); | |
f24e9980 SW |
1608 | ceph_con_keepalive(&osd->o_con); |
1609 | } | |
1610 | ||
422d2cb8 | 1611 | __schedule_osd_timeout(osdc); |
f9d25199 | 1612 | __send_queued(osdc); |
f24e9980 | 1613 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1614 | up_read(&osdc->map_sem); |
1615 | } | |
1616 | ||
f5a2041b YS |
1617 | static void handle_osds_timeout(struct work_struct *work) |
1618 | { | |
1619 | struct ceph_osd_client *osdc = | |
1620 | container_of(work, struct ceph_osd_client, | |
1621 | osds_timeout_work.work); | |
1622 | unsigned long delay = | |
3d14c5d2 | 1623 | osdc->client->options->osd_idle_ttl * HZ >> 2; |
f5a2041b YS |
1624 | |
1625 | dout("osds timeout\n"); | |
1626 | down_read(&osdc->map_sem); | |
aca420bc | 1627 | remove_old_osds(osdc); |
f5a2041b YS |
1628 | up_read(&osdc->map_sem); |
1629 | ||
1630 | schedule_delayed_work(&osdc->osds_timeout_work, | |
1631 | round_jiffies_relative(delay)); | |
1632 | } | |
1633 | ||
205ee118 ID |
1634 | static int ceph_oloc_decode(void **p, void *end, |
1635 | struct ceph_object_locator *oloc) | |
1636 | { | |
1637 | u8 struct_v, struct_cv; | |
1638 | u32 len; | |
1639 | void *struct_end; | |
1640 | int ret = 0; | |
1641 | ||
1642 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
1643 | struct_v = ceph_decode_8(p); | |
1644 | struct_cv = ceph_decode_8(p); | |
1645 | if (struct_v < 3) { | |
1646 | pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", | |
1647 | struct_v, struct_cv); | |
1648 | goto e_inval; | |
1649 | } | |
1650 | if (struct_cv > 6) { | |
1651 | pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", | |
1652 | struct_v, struct_cv); | |
1653 | goto e_inval; | |
1654 | } | |
1655 | len = ceph_decode_32(p); | |
1656 | ceph_decode_need(p, end, len, e_inval); | |
1657 | struct_end = *p + len; | |
1658 | ||
1659 | oloc->pool = ceph_decode_64(p); | |
1660 | *p += 4; /* skip preferred */ | |
1661 | ||
1662 | len = ceph_decode_32(p); | |
1663 | if (len > 0) { | |
1664 | pr_warn("ceph_object_locator::key is set\n"); | |
1665 | goto e_inval; | |
1666 | } | |
1667 | ||
1668 | if (struct_v >= 5) { | |
1669 | len = ceph_decode_32(p); | |
1670 | if (len > 0) { | |
1671 | pr_warn("ceph_object_locator::nspace is set\n"); | |
1672 | goto e_inval; | |
1673 | } | |
1674 | } | |
1675 | ||
1676 | if (struct_v >= 6) { | |
1677 | s64 hash = ceph_decode_64(p); | |
1678 | if (hash != -1) { | |
1679 | pr_warn("ceph_object_locator::hash is set\n"); | |
1680 | goto e_inval; | |
1681 | } | |
1682 | } | |
1683 | ||
1684 | /* skip the rest */ | |
1685 | *p = struct_end; | |
1686 | out: | |
1687 | return ret; | |
1688 | ||
1689 | e_inval: | |
1690 | ret = -EINVAL; | |
1691 | goto out; | |
1692 | } | |
1693 | ||
1694 | static int ceph_redirect_decode(void **p, void *end, | |
1695 | struct ceph_request_redirect *redir) | |
1696 | { | |
1697 | u8 struct_v, struct_cv; | |
1698 | u32 len; | |
1699 | void *struct_end; | |
1700 | int ret; | |
1701 | ||
1702 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
1703 | struct_v = ceph_decode_8(p); | |
1704 | struct_cv = ceph_decode_8(p); | |
1705 | if (struct_cv > 1) { | |
1706 | pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", | |
1707 | struct_v, struct_cv); | |
1708 | goto e_inval; | |
1709 | } | |
1710 | len = ceph_decode_32(p); | |
1711 | ceph_decode_need(p, end, len, e_inval); | |
1712 | struct_end = *p + len; | |
1713 | ||
1714 | ret = ceph_oloc_decode(p, end, &redir->oloc); | |
1715 | if (ret) | |
1716 | goto out; | |
1717 | ||
1718 | len = ceph_decode_32(p); | |
1719 | if (len > 0) { | |
1720 | pr_warn("ceph_request_redirect::object_name is set\n"); | |
1721 | goto e_inval; | |
1722 | } | |
1723 | ||
1724 | len = ceph_decode_32(p); | |
1725 | *p += len; /* skip osd_instructions */ | |
1726 | ||
1727 | /* skip the rest */ | |
1728 | *p = struct_end; | |
1729 | out: | |
1730 | return ret; | |
1731 | ||
1732 | e_inval: | |
1733 | ret = -EINVAL; | |
1734 | goto out; | |
1735 | } | |
1736 | ||
25845472 SW |
1737 | static void complete_request(struct ceph_osd_request *req) |
1738 | { | |
25845472 SW |
1739 | complete_all(&req->r_safe_completion); /* fsync waiter */ |
1740 | } | |
1741 | ||
f24e9980 SW |
1742 | /* |
1743 | * handle osd op reply. either call the callback if it is specified, | |
1744 | * or do the completion to wake up the waiting thread. | |
1745 | */ | |
350b1c32 SW |
1746 | static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, |
1747 | struct ceph_connection *con) | |
f24e9980 | 1748 | { |
1b83bef2 | 1749 | void *p, *end; |
f24e9980 | 1750 | struct ceph_osd_request *req; |
205ee118 | 1751 | struct ceph_request_redirect redir; |
f24e9980 | 1752 | u64 tid; |
1b83bef2 | 1753 | int object_len; |
79528734 AE |
1754 | unsigned int numops; |
1755 | int payload_len, flags; | |
0ceed5db | 1756 | s32 result; |
1b83bef2 SW |
1757 | s32 retry_attempt; |
1758 | struct ceph_pg pg; | |
1759 | int err; | |
1760 | u32 reassert_epoch; | |
1761 | u64 reassert_version; | |
1762 | u32 osdmap_epoch; | |
0d5af164 | 1763 | int already_completed; |
9fc6e064 | 1764 | u32 bytes; |
79528734 | 1765 | unsigned int i; |
f24e9980 | 1766 | |
6df058c0 | 1767 | tid = le64_to_cpu(msg->hdr.tid); |
1b83bef2 SW |
1768 | dout("handle_reply %p tid %llu\n", msg, tid); |
1769 | ||
1770 | p = msg->front.iov_base; | |
1771 | end = p + msg->front.iov_len; | |
1772 | ||
1773 | ceph_decode_need(&p, end, 4, bad); | |
1774 | object_len = ceph_decode_32(&p); | |
1775 | ceph_decode_need(&p, end, object_len, bad); | |
1776 | p += object_len; | |
1777 | ||
ef4859d6 | 1778 | err = ceph_decode_pgid(&p, end, &pg); |
1b83bef2 | 1779 | if (err) |
f24e9980 | 1780 | goto bad; |
1b83bef2 SW |
1781 | |
1782 | ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); | |
1783 | flags = ceph_decode_64(&p); | |
1784 | result = ceph_decode_32(&p); | |
1785 | reassert_epoch = ceph_decode_32(&p); | |
1786 | reassert_version = ceph_decode_64(&p); | |
1787 | osdmap_epoch = ceph_decode_32(&p); | |
1788 | ||
f24e9980 | 1789 | /* lookup */ |
ff513ace | 1790 | down_read(&osdc->map_sem); |
f24e9980 SW |
1791 | mutex_lock(&osdc->request_mutex); |
1792 | req = __lookup_request(osdc, tid); | |
1793 | if (req == NULL) { | |
1794 | dout("handle_reply tid %llu dne\n", tid); | |
8058fd45 | 1795 | goto bad_mutex; |
f24e9980 SW |
1796 | } |
1797 | ceph_osdc_get_request(req); | |
1b83bef2 SW |
1798 | |
1799 | dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, | |
1800 | req, result); | |
1801 | ||
18741196 | 1802 | ceph_decode_need(&p, end, 4, bad_put); |
1b83bef2 SW |
1803 | numops = ceph_decode_32(&p); |
1804 | if (numops > CEPH_OSD_MAX_OP) | |
1805 | goto bad_put; | |
1806 | if (numops != req->r_num_ops) | |
1807 | goto bad_put; | |
1808 | payload_len = 0; | |
18741196 | 1809 | ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); |
1b83bef2 SW |
1810 | for (i = 0; i < numops; i++) { |
1811 | struct ceph_osd_op *op = p; | |
1812 | int len; | |
1813 | ||
1814 | len = le32_to_cpu(op->payload_len); | |
1815 | req->r_reply_op_len[i] = len; | |
1816 | dout(" op %d has %d bytes\n", i, len); | |
1817 | payload_len += len; | |
1818 | p += sizeof(*op); | |
1819 | } | |
9fc6e064 AE |
1820 | bytes = le32_to_cpu(msg->hdr.data_len); |
1821 | if (payload_len != bytes) { | |
b9a67899 JP |
1822 | pr_warn("sum of op payload lens %d != data_len %d\n", |
1823 | payload_len, bytes); | |
1b83bef2 SW |
1824 | goto bad_put; |
1825 | } | |
1826 | ||
18741196 | 1827 | ceph_decode_need(&p, end, 4 + numops * 4, bad_put); |
1b83bef2 SW |
1828 | retry_attempt = ceph_decode_32(&p); |
1829 | for (i = 0; i < numops; i++) | |
1830 | req->r_reply_op_result[i] = ceph_decode_32(&p); | |
f24e9980 | 1831 | |
205ee118 ID |
1832 | if (le16_to_cpu(msg->hdr.version) >= 6) { |
1833 | p += 8 + 4; /* skip replay_version */ | |
1834 | p += 8; /* skip user_version */ | |
eb845ff1 | 1835 | |
205ee118 ID |
1836 | err = ceph_redirect_decode(&p, end, &redir); |
1837 | if (err) | |
1838 | goto bad_put; | |
1839 | } else { | |
1840 | redir.oloc.pool = -1; | |
1841 | } | |
f24e9980 | 1842 | |
205ee118 ID |
1843 | if (redir.oloc.pool != -1) { |
1844 | dout("redirect pool %lld\n", redir.oloc.pool); | |
1845 | ||
1846 | __unregister_request(osdc, req); | |
205ee118 ID |
1847 | |
1848 | req->r_target_oloc = redir.oloc; /* struct */ | |
1849 | ||
1850 | /* | |
1851 | * Start redirect requests with nofail=true. If | |
1852 | * mapping fails, request will end up on the notarget | |
1853 | * list, waiting for the new osdmap (which can take | |
1854 | * a while), even though the original request mapped | |
1855 | * successfully. In the future we might want to follow | |
1856 | * original request's nofail setting here. | |
1857 | */ | |
ff513ace | 1858 | err = __ceph_osdc_start_request(osdc, req, true); |
205ee118 ID |
1859 | BUG_ON(err); |
1860 | ||
ff513ace | 1861 | goto out_unlock; |
205ee118 ID |
1862 | } |
1863 | ||
1864 | already_completed = req->r_got_reply; | |
1865 | if (!req->r_got_reply) { | |
1b83bef2 | 1866 | req->r_result = result; |
f24e9980 SW |
1867 | dout("handle_reply result %d bytes %d\n", req->r_result, |
1868 | bytes); | |
1869 | if (req->r_result == 0) | |
1870 | req->r_result = bytes; | |
1871 | ||
1872 | /* in case this is a write and we need to replay, */ | |
1b83bef2 SW |
1873 | req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); |
1874 | req->r_reassert_version.version = cpu_to_le64(reassert_version); | |
f24e9980 SW |
1875 | |
1876 | req->r_got_reply = 1; | |
1877 | } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { | |
1878 | dout("handle_reply tid %llu dup ack\n", tid); | |
ff513ace | 1879 | goto out_unlock; |
f24e9980 SW |
1880 | } |
1881 | ||
1882 | dout("handle_reply tid %llu flags %d\n", tid, flags); | |
1883 | ||
a40c4f10 YS |
1884 | if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) |
1885 | __register_linger_request(osdc, req); | |
1886 | ||
f24e9980 | 1887 | /* either this is a read, or we got the safe response */ |
0ceed5db SW |
1888 | if (result < 0 || |
1889 | (flags & CEPH_OSD_FLAG_ONDISK) || | |
f24e9980 SW |
1890 | ((flags & CEPH_OSD_FLAG_WRITE) == 0)) |
1891 | __unregister_request(osdc, req); | |
1892 | ||
1893 | mutex_unlock(&osdc->request_mutex); | |
ff513ace | 1894 | up_read(&osdc->map_sem); |
f24e9980 | 1895 | |
eb845ff1 | 1896 | if (!already_completed) { |
61c5d6bf YZ |
1897 | if (req->r_unsafe_callback && |
1898 | result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) | |
1899 | req->r_unsafe_callback(req, true); | |
eb845ff1 YZ |
1900 | if (req->r_callback) |
1901 | req->r_callback(req, msg); | |
1902 | else | |
1903 | complete_all(&req->r_completion); | |
1904 | } | |
f24e9980 | 1905 | |
61c5d6bf YZ |
1906 | if (flags & CEPH_OSD_FLAG_ONDISK) { |
1907 | if (req->r_unsafe_callback && already_completed) | |
1908 | req->r_unsafe_callback(req, false); | |
25845472 | 1909 | complete_request(req); |
61c5d6bf | 1910 | } |
f24e9980 | 1911 | |
ff513ace | 1912 | out: |
a40c4f10 | 1913 | dout("req=%p req->r_linger=%d\n", req, req->r_linger); |
f24e9980 SW |
1914 | ceph_osdc_put_request(req); |
1915 | return; | |
ff513ace ID |
1916 | out_unlock: |
1917 | mutex_unlock(&osdc->request_mutex); | |
1918 | up_read(&osdc->map_sem); | |
1919 | goto out; | |
f24e9980 | 1920 | |
1b83bef2 | 1921 | bad_put: |
37c89bde LW |
1922 | req->r_result = -EIO; |
1923 | __unregister_request(osdc, req); | |
1924 | if (req->r_callback) | |
1925 | req->r_callback(req, msg); | |
1926 | else | |
1927 | complete_all(&req->r_completion); | |
1928 | complete_request(req); | |
1b83bef2 | 1929 | ceph_osdc_put_request(req); |
8058fd45 AE |
1930 | bad_mutex: |
1931 | mutex_unlock(&osdc->request_mutex); | |
ff513ace | 1932 | up_read(&osdc->map_sem); |
f24e9980 | 1933 | bad: |
1b83bef2 SW |
1934 | pr_err("corrupt osd_op_reply got %d %d\n", |
1935 | (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); | |
9ec7cab1 | 1936 | ceph_msg_dump(msg); |
f24e9980 SW |
1937 | } |
1938 | ||
6f6c7006 | 1939 | static void reset_changed_osds(struct ceph_osd_client *osdc) |
f24e9980 | 1940 | { |
f24e9980 | 1941 | struct rb_node *p, *n; |
f24e9980 | 1942 | |
6f6c7006 SW |
1943 | for (p = rb_first(&osdc->osds); p; p = n) { |
1944 | struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); | |
f24e9980 | 1945 | |
6f6c7006 SW |
1946 | n = rb_next(p); |
1947 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
1948 | memcmp(&osd->o_con.peer_addr, | |
1949 | ceph_osd_addr(osdc->osdmap, | |
1950 | osd->o_osd), | |
1951 | sizeof(struct ceph_entity_addr)) != 0) | |
1952 | __reset_osd(osdc, osd); | |
f24e9980 | 1953 | } |
422d2cb8 YS |
1954 | } |
1955 | ||
1956 | /* | |
6f6c7006 SW |
1957 | * Requeue requests whose mapping to an OSD has changed. If requests map to |
1958 | * no osd, request a new map. | |
422d2cb8 | 1959 | * |
e6d50f67 | 1960 | * Caller should hold map_sem for read. |
422d2cb8 | 1961 | */ |
9a1ea2db JD |
1962 | static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, |
1963 | bool force_resend_writes) | |
422d2cb8 | 1964 | { |
a40c4f10 | 1965 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
1966 | struct rb_node *p; |
1967 | int needmap = 0; | |
1968 | int err; | |
9a1ea2db | 1969 | bool force_resend_req; |
422d2cb8 | 1970 | |
9a1ea2db JD |
1971 | dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", |
1972 | force_resend_writes ? " (force resend writes)" : ""); | |
422d2cb8 | 1973 | mutex_lock(&osdc->request_mutex); |
6194ea89 | 1974 | for (p = rb_first(&osdc->requests); p; ) { |
6f6c7006 | 1975 | req = rb_entry(p, struct ceph_osd_request, r_node); |
6194ea89 | 1976 | p = rb_next(p); |
ab60b16d AE |
1977 | |
1978 | /* | |
1979 | * For linger requests that have not yet been | |
1980 | * registered, move them to the linger list; they'll | |
1981 | * be sent to the osd in the loop below. Unregister | |
1982 | * the request before re-registering it as a linger | |
1983 | * request to ensure the __map_request() below | |
1984 | * will decide it needs to be sent. | |
1985 | */ | |
1986 | if (req->r_linger && list_empty(&req->r_linger_item)) { | |
1987 | dout("%p tid %llu restart on osd%d\n", | |
1988 | req, req->r_tid, | |
1989 | req->r_osd ? req->r_osd->o_osd : -1); | |
96e4dac6 | 1990 | ceph_osdc_get_request(req); |
ab60b16d AE |
1991 | __unregister_request(osdc, req); |
1992 | __register_linger_request(osdc, req); | |
96e4dac6 | 1993 | ceph_osdc_put_request(req); |
ab60b16d AE |
1994 | continue; |
1995 | } | |
1996 | ||
9a1ea2db JD |
1997 | force_resend_req = force_resend || |
1998 | (force_resend_writes && | |
1999 | req->r_flags & CEPH_OSD_FLAG_WRITE); | |
2000 | err = __map_request(osdc, req, force_resend_req); | |
6f6c7006 SW |
2001 | if (err < 0) |
2002 | continue; /* error */ | |
2003 | if (req->r_osd == NULL) { | |
2004 | dout("%p tid %llu maps to no osd\n", req, req->r_tid); | |
2005 | needmap++; /* request a newer map */ | |
2006 | } else if (err > 0) { | |
6194ea89 SW |
2007 | if (!req->r_linger) { |
2008 | dout("%p tid %llu requeued on osd%d\n", req, | |
2009 | req->r_tid, | |
2010 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 2011 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
6194ea89 SW |
2012 | } |
2013 | } | |
a40c4f10 YS |
2014 | } |
2015 | ||
2016 | list_for_each_entry_safe(req, nreq, &osdc->req_linger, | |
2017 | r_linger_item) { | |
2018 | dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); | |
2019 | ||
9a1ea2db JD |
2020 | err = __map_request(osdc, req, |
2021 | force_resend || force_resend_writes); | |
ab60b16d | 2022 | dout("__map_request returned %d\n", err); |
a40c4f10 YS |
2023 | if (err == 0) |
2024 | continue; /* no change and no osd was specified */ | |
2025 | if (err < 0) | |
2026 | continue; /* hrm! */ | |
2027 | if (req->r_osd == NULL) { | |
2028 | dout("tid %llu maps to no valid osd\n", req->r_tid); | |
2029 | needmap++; /* request a newer map */ | |
2030 | continue; | |
6f6c7006 | 2031 | } |
a40c4f10 YS |
2032 | |
2033 | dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, | |
2034 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 2035 | __register_request(osdc, req); |
c89ce05e | 2036 | __unregister_linger_request(osdc, req); |
6f6c7006 | 2037 | } |
14d2f38d | 2038 | reset_changed_osds(osdc); |
f24e9980 SW |
2039 | mutex_unlock(&osdc->request_mutex); |
2040 | ||
2041 | if (needmap) { | |
2042 | dout("%d requests for down osds, need new map\n", needmap); | |
2043 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
2044 | } | |
422d2cb8 | 2045 | } |
6f6c7006 SW |
2046 | |
2047 | ||
f24e9980 SW |
2048 | /* |
2049 | * Process updated osd map. | |
2050 | * | |
2051 | * The message contains any number of incremental and full maps, normally | |
2052 | * indicating some sort of topology change in the cluster. Kick requests | |
2053 | * off to different OSDs as needed. | |
2054 | */ | |
2055 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
2056 | { | |
2057 | void *p, *end, *next; | |
2058 | u32 nr_maps, maplen; | |
2059 | u32 epoch; | |
2060 | struct ceph_osdmap *newmap = NULL, *oldmap; | |
2061 | int err; | |
2062 | struct ceph_fsid fsid; | |
9a1ea2db | 2063 | bool was_full; |
f24e9980 SW |
2064 | |
2065 | dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); | |
2066 | p = msg->front.iov_base; | |
2067 | end = p + msg->front.iov_len; | |
2068 | ||
2069 | /* verify fsid */ | |
2070 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
2071 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d SW |
2072 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
2073 | return; | |
f24e9980 SW |
2074 | |
2075 | down_write(&osdc->map_sem); | |
2076 | ||
9a1ea2db JD |
2077 | was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); |
2078 | ||
f24e9980 SW |
2079 | /* incremental maps */ |
2080 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
2081 | dout(" %d inc maps\n", nr_maps); | |
2082 | while (nr_maps > 0) { | |
2083 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
2084 | epoch = ceph_decode_32(&p); |
2085 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
2086 | ceph_decode_need(&p, end, maplen, bad); |
2087 | next = p + maplen; | |
2088 | if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { | |
2089 | dout("applying incremental map %u len %d\n", | |
2090 | epoch, maplen); | |
2091 | newmap = osdmap_apply_incremental(&p, next, | |
2092 | osdc->osdmap, | |
15d9882c | 2093 | &osdc->client->msgr); |
f24e9980 SW |
2094 | if (IS_ERR(newmap)) { |
2095 | err = PTR_ERR(newmap); | |
2096 | goto bad; | |
2097 | } | |
30dc6381 | 2098 | BUG_ON(!newmap); |
f24e9980 SW |
2099 | if (newmap != osdc->osdmap) { |
2100 | ceph_osdmap_destroy(osdc->osdmap); | |
2101 | osdc->osdmap = newmap; | |
2102 | } | |
9a1ea2db JD |
2103 | was_full = was_full || |
2104 | ceph_osdmap_flag(osdc->osdmap, | |
2105 | CEPH_OSDMAP_FULL); | |
2106 | kick_requests(osdc, 0, was_full); | |
f24e9980 SW |
2107 | } else { |
2108 | dout("ignoring incremental map %u len %d\n", | |
2109 | epoch, maplen); | |
2110 | } | |
2111 | p = next; | |
2112 | nr_maps--; | |
2113 | } | |
2114 | if (newmap) | |
2115 | goto done; | |
2116 | ||
2117 | /* full maps */ | |
2118 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
2119 | dout(" %d full maps\n", nr_maps); | |
2120 | while (nr_maps) { | |
2121 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
2122 | epoch = ceph_decode_32(&p); |
2123 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
2124 | ceph_decode_need(&p, end, maplen, bad); |
2125 | if (nr_maps > 1) { | |
2126 | dout("skipping non-latest full map %u len %d\n", | |
2127 | epoch, maplen); | |
2128 | } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { | |
2129 | dout("skipping full map %u len %d, " | |
2130 | "older than our %u\n", epoch, maplen, | |
2131 | osdc->osdmap->epoch); | |
2132 | } else { | |
38d6453c SW |
2133 | int skipped_map = 0; |
2134 | ||
f24e9980 | 2135 | dout("taking full map %u len %d\n", epoch, maplen); |
a2505d63 | 2136 | newmap = ceph_osdmap_decode(&p, p+maplen); |
f24e9980 SW |
2137 | if (IS_ERR(newmap)) { |
2138 | err = PTR_ERR(newmap); | |
2139 | goto bad; | |
2140 | } | |
30dc6381 | 2141 | BUG_ON(!newmap); |
f24e9980 SW |
2142 | oldmap = osdc->osdmap; |
2143 | osdc->osdmap = newmap; | |
38d6453c SW |
2144 | if (oldmap) { |
2145 | if (oldmap->epoch + 1 < newmap->epoch) | |
2146 | skipped_map = 1; | |
f24e9980 | 2147 | ceph_osdmap_destroy(oldmap); |
38d6453c | 2148 | } |
9a1ea2db JD |
2149 | was_full = was_full || |
2150 | ceph_osdmap_flag(osdc->osdmap, | |
2151 | CEPH_OSDMAP_FULL); | |
2152 | kick_requests(osdc, skipped_map, was_full); | |
f24e9980 SW |
2153 | } |
2154 | p += maplen; | |
2155 | nr_maps--; | |
2156 | } | |
2157 | ||
b72e19b9 DC |
2158 | if (!osdc->osdmap) |
2159 | goto bad; | |
f24e9980 SW |
2160 | done: |
2161 | downgrade_write(&osdc->map_sem); | |
2162 | ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); | |
cd634fb6 SW |
2163 | |
2164 | /* | |
2165 | * subscribe to subsequent osdmap updates if full to ensure | |
2166 | * we find out when we are no longer full and stop returning | |
2167 | * ENOSPC. | |
2168 | */ | |
d29adb34 JD |
2169 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || |
2170 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || | |
2171 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) | |
cd634fb6 SW |
2172 | ceph_monc_request_next_osdmap(&osdc->client->monc); |
2173 | ||
f9d25199 AE |
2174 | mutex_lock(&osdc->request_mutex); |
2175 | __send_queued(osdc); | |
2176 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 2177 | up_read(&osdc->map_sem); |
03066f23 | 2178 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
2179 | return; |
2180 | ||
2181 | bad: | |
2182 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 2183 | ceph_msg_dump(msg); |
f24e9980 | 2184 | up_write(&osdc->map_sem); |
f24e9980 SW |
2185 | } |
2186 | ||
a40c4f10 YS |
2187 | /* |
2188 | * watch/notify callback event infrastructure | |
2189 | * | |
2190 | * These callbacks are used both for watch and notify operations. | |
2191 | */ | |
2192 | static void __release_event(struct kref *kref) | |
2193 | { | |
2194 | struct ceph_osd_event *event = | |
2195 | container_of(kref, struct ceph_osd_event, kref); | |
2196 | ||
2197 | dout("__release_event %p\n", event); | |
2198 | kfree(event); | |
2199 | } | |
2200 | ||
2201 | static void get_event(struct ceph_osd_event *event) | |
2202 | { | |
2203 | kref_get(&event->kref); | |
2204 | } | |
2205 | ||
2206 | void ceph_osdc_put_event(struct ceph_osd_event *event) | |
2207 | { | |
2208 | kref_put(&event->kref, __release_event); | |
2209 | } | |
2210 | EXPORT_SYMBOL(ceph_osdc_put_event); | |
2211 | ||
2212 | static void __insert_event(struct ceph_osd_client *osdc, | |
2213 | struct ceph_osd_event *new) | |
2214 | { | |
2215 | struct rb_node **p = &osdc->event_tree.rb_node; | |
2216 | struct rb_node *parent = NULL; | |
2217 | struct ceph_osd_event *event = NULL; | |
2218 | ||
2219 | while (*p) { | |
2220 | parent = *p; | |
2221 | event = rb_entry(parent, struct ceph_osd_event, node); | |
2222 | if (new->cookie < event->cookie) | |
2223 | p = &(*p)->rb_left; | |
2224 | else if (new->cookie > event->cookie) | |
2225 | p = &(*p)->rb_right; | |
2226 | else | |
2227 | BUG(); | |
2228 | } | |
2229 | ||
2230 | rb_link_node(&new->node, parent, p); | |
2231 | rb_insert_color(&new->node, &osdc->event_tree); | |
2232 | } | |
2233 | ||
2234 | static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, | |
2235 | u64 cookie) | |
2236 | { | |
2237 | struct rb_node **p = &osdc->event_tree.rb_node; | |
2238 | struct rb_node *parent = NULL; | |
2239 | struct ceph_osd_event *event = NULL; | |
2240 | ||
2241 | while (*p) { | |
2242 | parent = *p; | |
2243 | event = rb_entry(parent, struct ceph_osd_event, node); | |
2244 | if (cookie < event->cookie) | |
2245 | p = &(*p)->rb_left; | |
2246 | else if (cookie > event->cookie) | |
2247 | p = &(*p)->rb_right; | |
2248 | else | |
2249 | return event; | |
2250 | } | |
2251 | return NULL; | |
2252 | } | |
2253 | ||
2254 | static void __remove_event(struct ceph_osd_event *event) | |
2255 | { | |
2256 | struct ceph_osd_client *osdc = event->osdc; | |
2257 | ||
2258 | if (!RB_EMPTY_NODE(&event->node)) { | |
2259 | dout("__remove_event removed %p\n", event); | |
2260 | rb_erase(&event->node, &osdc->event_tree); | |
2261 | ceph_osdc_put_event(event); | |
2262 | } else { | |
2263 | dout("__remove_event didn't remove %p\n", event); | |
2264 | } | |
2265 | } | |
2266 | ||
2267 | int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
2268 | void (*event_cb)(u64, u64, u8, void *), | |
3c663bbd | 2269 | void *data, struct ceph_osd_event **pevent) |
a40c4f10 YS |
2270 | { |
2271 | struct ceph_osd_event *event; | |
2272 | ||
2273 | event = kmalloc(sizeof(*event), GFP_NOIO); | |
2274 | if (!event) | |
2275 | return -ENOMEM; | |
2276 | ||
2277 | dout("create_event %p\n", event); | |
2278 | event->cb = event_cb; | |
3c663bbd | 2279 | event->one_shot = 0; |
a40c4f10 YS |
2280 | event->data = data; |
2281 | event->osdc = osdc; | |
2282 | INIT_LIST_HEAD(&event->osd_node); | |
3ee5234d | 2283 | RB_CLEAR_NODE(&event->node); |
a40c4f10 YS |
2284 | kref_init(&event->kref); /* one ref for us */ |
2285 | kref_get(&event->kref); /* one ref for the caller */ | |
a40c4f10 YS |
2286 | |
2287 | spin_lock(&osdc->event_lock); | |
2288 | event->cookie = ++osdc->event_count; | |
2289 | __insert_event(osdc, event); | |
2290 | spin_unlock(&osdc->event_lock); | |
2291 | ||
2292 | *pevent = event; | |
2293 | return 0; | |
2294 | } | |
2295 | EXPORT_SYMBOL(ceph_osdc_create_event); | |
2296 | ||
2297 | void ceph_osdc_cancel_event(struct ceph_osd_event *event) | |
2298 | { | |
2299 | struct ceph_osd_client *osdc = event->osdc; | |
2300 | ||
2301 | dout("cancel_event %p\n", event); | |
2302 | spin_lock(&osdc->event_lock); | |
2303 | __remove_event(event); | |
2304 | spin_unlock(&osdc->event_lock); | |
2305 | ceph_osdc_put_event(event); /* caller's */ | |
2306 | } | |
2307 | EXPORT_SYMBOL(ceph_osdc_cancel_event); | |
2308 | ||
2309 | ||
2310 | static void do_event_work(struct work_struct *work) | |
2311 | { | |
2312 | struct ceph_osd_event_work *event_work = | |
2313 | container_of(work, struct ceph_osd_event_work, work); | |
2314 | struct ceph_osd_event *event = event_work->event; | |
2315 | u64 ver = event_work->ver; | |
2316 | u64 notify_id = event_work->notify_id; | |
2317 | u8 opcode = event_work->opcode; | |
2318 | ||
2319 | dout("do_event_work completing %p\n", event); | |
2320 | event->cb(ver, notify_id, opcode, event->data); | |
a40c4f10 YS |
2321 | dout("do_event_work completed %p\n", event); |
2322 | ceph_osdc_put_event(event); | |
2323 | kfree(event_work); | |
2324 | } | |
2325 | ||
2326 | ||
2327 | /* | |
2328 | * Process osd watch notifications | |
2329 | */ | |
3c663bbd AE |
2330 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
2331 | struct ceph_msg *msg) | |
a40c4f10 YS |
2332 | { |
2333 | void *p, *end; | |
2334 | u8 proto_ver; | |
2335 | u64 cookie, ver, notify_id; | |
2336 | u8 opcode; | |
2337 | struct ceph_osd_event *event; | |
2338 | struct ceph_osd_event_work *event_work; | |
2339 | ||
2340 | p = msg->front.iov_base; | |
2341 | end = p + msg->front.iov_len; | |
2342 | ||
2343 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
2344 | ceph_decode_8_safe(&p, end, opcode, bad); | |
2345 | ceph_decode_64_safe(&p, end, cookie, bad); | |
2346 | ceph_decode_64_safe(&p, end, ver, bad); | |
2347 | ceph_decode_64_safe(&p, end, notify_id, bad); | |
2348 | ||
2349 | spin_lock(&osdc->event_lock); | |
2350 | event = __find_event(osdc, cookie); | |
2351 | if (event) { | |
3c663bbd | 2352 | BUG_ON(event->one_shot); |
a40c4f10 | 2353 | get_event(event); |
a40c4f10 YS |
2354 | } |
2355 | spin_unlock(&osdc->event_lock); | |
2356 | dout("handle_watch_notify cookie %lld ver %lld event %p\n", | |
2357 | cookie, ver, event); | |
2358 | if (event) { | |
2359 | event_work = kmalloc(sizeof(*event_work), GFP_NOIO); | |
a40c4f10 YS |
2360 | if (!event_work) { |
2361 | dout("ERROR: could not allocate event_work\n"); | |
2362 | goto done_err; | |
2363 | } | |
6b0ae409 | 2364 | INIT_WORK(&event_work->work, do_event_work); |
a40c4f10 YS |
2365 | event_work->event = event; |
2366 | event_work->ver = ver; | |
2367 | event_work->notify_id = notify_id; | |
2368 | event_work->opcode = opcode; | |
2369 | if (!queue_work(osdc->notify_wq, &event_work->work)) { | |
2370 | dout("WARNING: failed to queue notify event work\n"); | |
2371 | goto done_err; | |
2372 | } | |
2373 | } | |
2374 | ||
2375 | return; | |
2376 | ||
2377 | done_err: | |
a40c4f10 YS |
2378 | ceph_osdc_put_event(event); |
2379 | return; | |
2380 | ||
2381 | bad: | |
2382 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
a40c4f10 YS |
2383 | } |
2384 | ||
e65550fd AE |
2385 | /* |
2386 | * build new request AND message | |
2387 | * | |
2388 | */ | |
2389 | void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, | |
2390 | struct ceph_snap_context *snapc, u64 snap_id, | |
2391 | struct timespec *mtime) | |
2392 | { | |
2393 | struct ceph_msg *msg = req->r_request; | |
2394 | void *p; | |
2395 | size_t msg_size; | |
2396 | int flags = req->r_flags; | |
2397 | u64 data_len; | |
2398 | unsigned int i; | |
2399 | ||
2400 | req->r_snapid = snap_id; | |
2401 | req->r_snapc = ceph_get_snap_context(snapc); | |
2402 | ||
2403 | /* encode request */ | |
2404 | msg->hdr.version = cpu_to_le16(4); | |
2405 | ||
2406 | p = msg->front.iov_base; | |
2407 | ceph_encode_32(&p, 1); /* client_inc is always 1 */ | |
2408 | req->r_request_osdmap_epoch = p; | |
2409 | p += 4; | |
2410 | req->r_request_flags = p; | |
2411 | p += 4; | |
2412 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) | |
2413 | ceph_encode_timespec(p, mtime); | |
2414 | p += sizeof(struct ceph_timespec); | |
2415 | req->r_request_reassert_version = p; | |
2416 | p += sizeof(struct ceph_eversion); /* will get filled in */ | |
2417 | ||
2418 | /* oloc */ | |
2419 | ceph_encode_8(&p, 4); | |
2420 | ceph_encode_8(&p, 4); | |
2421 | ceph_encode_32(&p, 8 + 4 + 4); | |
2422 | req->r_request_pool = p; | |
2423 | p += 8; | |
2424 | ceph_encode_32(&p, -1); /* preferred */ | |
2425 | ceph_encode_32(&p, 0); /* key len */ | |
2426 | ||
2427 | ceph_encode_8(&p, 1); | |
2428 | req->r_request_pgid = p; | |
2429 | p += 8 + 4; | |
2430 | ceph_encode_32(&p, -1); /* preferred */ | |
2431 | ||
2432 | /* oid */ | |
3c972c95 ID |
2433 | ceph_encode_32(&p, req->r_base_oid.name_len); |
2434 | memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len); | |
2435 | dout("oid '%.*s' len %d\n", req->r_base_oid.name_len, | |
2436 | req->r_base_oid.name, req->r_base_oid.name_len); | |
2437 | p += req->r_base_oid.name_len; | |
e65550fd AE |
2438 | |
2439 | /* ops--can imply data */ | |
2440 | ceph_encode_16(&p, (u16)req->r_num_ops); | |
2441 | data_len = 0; | |
2442 | for (i = 0; i < req->r_num_ops; i++) { | |
2443 | data_len += osd_req_encode_op(req, p, i); | |
2444 | p += sizeof(struct ceph_osd_op); | |
2445 | } | |
2446 | ||
2447 | /* snaps */ | |
2448 | ceph_encode_64(&p, req->r_snapid); | |
2449 | ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); | |
2450 | ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); | |
2451 | if (req->r_snapc) { | |
2452 | for (i = 0; i < snapc->num_snaps; i++) { | |
2453 | ceph_encode_64(&p, req->r_snapc->snaps[i]); | |
2454 | } | |
2455 | } | |
2456 | ||
2457 | req->r_request_attempts = p; | |
2458 | p += 4; | |
2459 | ||
2460 | /* data */ | |
2461 | if (flags & CEPH_OSD_FLAG_WRITE) { | |
2462 | u16 data_off; | |
2463 | ||
2464 | /* | |
2465 | * The header "data_off" is a hint to the receiver | |
2466 | * allowing it to align received data into its | |
2467 | * buffers such that there's no need to re-copy | |
2468 | * it before writing it to disk (direct I/O). | |
2469 | */ | |
2470 | data_off = (u16) (off & 0xffff); | |
2471 | req->r_request->hdr.data_off = cpu_to_le16(data_off); | |
2472 | } | |
2473 | req->r_request->hdr.data_len = cpu_to_le32(data_len); | |
2474 | ||
2475 | BUG_ON(p > msg->front.iov_base + msg->front.iov_len); | |
2476 | msg_size = p - msg->front.iov_base; | |
2477 | msg->front.iov_len = msg_size; | |
2478 | msg->hdr.front_len = cpu_to_le32(msg_size); | |
2479 | ||
2480 | dout("build_request msg_size was %d\n", (int)msg_size); | |
2481 | } | |
2482 | EXPORT_SYMBOL(ceph_osdc_build_request); | |
2483 | ||
70636773 AE |
2484 | /* |
2485 | * Register request, send initial attempt. | |
2486 | */ | |
2487 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
2488 | struct ceph_osd_request *req, | |
2489 | bool nofail) | |
2490 | { | |
0bbfdfe8 | 2491 | int rc; |
70636773 | 2492 | |
f24e9980 SW |
2493 | down_read(&osdc->map_sem); |
2494 | mutex_lock(&osdc->request_mutex); | |
0bbfdfe8 ID |
2495 | |
2496 | rc = __ceph_osdc_start_request(osdc, req, nofail); | |
2497 | ||
f24e9980 SW |
2498 | mutex_unlock(&osdc->request_mutex); |
2499 | up_read(&osdc->map_sem); | |
0bbfdfe8 | 2500 | |
f24e9980 SW |
2501 | return rc; |
2502 | } | |
3d14c5d2 | 2503 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 | 2504 | |
c9f9b93d ID |
2505 | /* |
2506 | * Unregister a registered request. The request is not completed (i.e. | |
2507 | * no callbacks or wakeups) - higher layers are supposed to know what | |
2508 | * they are canceling. | |
2509 | */ | |
2510 | void ceph_osdc_cancel_request(struct ceph_osd_request *req) | |
2511 | { | |
2512 | struct ceph_osd_client *osdc = req->r_osdc; | |
2513 | ||
2514 | mutex_lock(&osdc->request_mutex); | |
2515 | if (req->r_linger) | |
2516 | __unregister_linger_request(osdc, req); | |
2517 | __unregister_request(osdc, req); | |
2518 | mutex_unlock(&osdc->request_mutex); | |
2519 | ||
2520 | dout("%s %p tid %llu canceled\n", __func__, req, req->r_tid); | |
2521 | } | |
2522 | EXPORT_SYMBOL(ceph_osdc_cancel_request); | |
2523 | ||
f24e9980 SW |
2524 | /* |
2525 | * wait for a request to complete | |
2526 | */ | |
2527 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
2528 | struct ceph_osd_request *req) | |
2529 | { | |
2530 | int rc; | |
2531 | ||
c9f9b93d ID |
2532 | dout("%s %p tid %llu\n", __func__, req, req->r_tid); |
2533 | ||
f24e9980 SW |
2534 | rc = wait_for_completion_interruptible(&req->r_completion); |
2535 | if (rc < 0) { | |
c9f9b93d ID |
2536 | dout("%s %p tid %llu interrupted\n", __func__, req, req->r_tid); |
2537 | ceph_osdc_cancel_request(req); | |
25845472 | 2538 | complete_request(req); |
f24e9980 SW |
2539 | return rc; |
2540 | } | |
2541 | ||
c9f9b93d ID |
2542 | dout("%s %p tid %llu result %d\n", __func__, req, req->r_tid, |
2543 | req->r_result); | |
f24e9980 SW |
2544 | return req->r_result; |
2545 | } | |
3d14c5d2 | 2546 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
2547 | |
2548 | /* | |
2549 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
2550 | */ | |
2551 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
2552 | { | |
2553 | struct ceph_osd_request *req; | |
2554 | u64 last_tid, next_tid = 0; | |
2555 | ||
2556 | mutex_lock(&osdc->request_mutex); | |
2557 | last_tid = osdc->last_tid; | |
2558 | while (1) { | |
2559 | req = __lookup_request_ge(osdc, next_tid); | |
2560 | if (!req) | |
2561 | break; | |
2562 | if (req->r_tid > last_tid) | |
2563 | break; | |
2564 | ||
2565 | next_tid = req->r_tid + 1; | |
2566 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) | |
2567 | continue; | |
2568 | ||
2569 | ceph_osdc_get_request(req); | |
2570 | mutex_unlock(&osdc->request_mutex); | |
2571 | dout("sync waiting on tid %llu (last is %llu)\n", | |
2572 | req->r_tid, last_tid); | |
2573 | wait_for_completion(&req->r_safe_completion); | |
2574 | mutex_lock(&osdc->request_mutex); | |
2575 | ceph_osdc_put_request(req); | |
2576 | } | |
2577 | mutex_unlock(&osdc->request_mutex); | |
2578 | dout("sync done (thru tid %llu)\n", last_tid); | |
2579 | } | |
3d14c5d2 | 2580 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 | 2581 | |
dd935f44 JD |
2582 | /* |
2583 | * Call all pending notify callbacks - for use after a watch is | |
2584 | * unregistered, to make sure no more callbacks for it will be invoked | |
2585 | */ | |
f6479449 | 2586 | void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) |
dd935f44 JD |
2587 | { |
2588 | flush_workqueue(osdc->notify_wq); | |
2589 | } | |
2590 | EXPORT_SYMBOL(ceph_osdc_flush_notifies); | |
2591 | ||
2592 | ||
f24e9980 SW |
2593 | /* |
2594 | * init, shutdown | |
2595 | */ | |
2596 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
2597 | { | |
2598 | int err; | |
2599 | ||
2600 | dout("init\n"); | |
2601 | osdc->client = client; | |
2602 | osdc->osdmap = NULL; | |
2603 | init_rwsem(&osdc->map_sem); | |
2604 | init_completion(&osdc->map_waiters); | |
2605 | osdc->last_requested_map = 0; | |
2606 | mutex_init(&osdc->request_mutex); | |
f24e9980 SW |
2607 | osdc->last_tid = 0; |
2608 | osdc->osds = RB_ROOT; | |
f5a2041b | 2609 | INIT_LIST_HEAD(&osdc->osd_lru); |
f24e9980 | 2610 | osdc->requests = RB_ROOT; |
422d2cb8 | 2611 | INIT_LIST_HEAD(&osdc->req_lru); |
6f6c7006 SW |
2612 | INIT_LIST_HEAD(&osdc->req_unsent); |
2613 | INIT_LIST_HEAD(&osdc->req_notarget); | |
a40c4f10 | 2614 | INIT_LIST_HEAD(&osdc->req_linger); |
f24e9980 SW |
2615 | osdc->num_requests = 0; |
2616 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); | |
f5a2041b | 2617 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10 YS |
2618 | spin_lock_init(&osdc->event_lock); |
2619 | osdc->event_tree = RB_ROOT; | |
2620 | osdc->event_count = 0; | |
f5a2041b YS |
2621 | |
2622 | schedule_delayed_work(&osdc->osds_timeout_work, | |
3d14c5d2 | 2623 | round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); |
f24e9980 | 2624 | |
5f44f142 | 2625 | err = -ENOMEM; |
f24e9980 SW |
2626 | osdc->req_mempool = mempool_create_kmalloc_pool(10, |
2627 | sizeof(struct ceph_osd_request)); | |
2628 | if (!osdc->req_mempool) | |
5f44f142 | 2629 | goto out; |
f24e9980 | 2630 | |
d50b409f SW |
2631 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
2632 | OSD_OP_FRONT_LEN, 10, true, | |
4f48280e | 2633 | "osd_op"); |
f24e9980 | 2634 | if (err < 0) |
5f44f142 | 2635 | goto out_mempool; |
d50b409f | 2636 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
4f48280e SW |
2637 | OSD_OPREPLY_FRONT_LEN, 10, true, |
2638 | "osd_op_reply"); | |
c16e7869 SW |
2639 | if (err < 0) |
2640 | goto out_msgpool; | |
a40c4f10 | 2641 | |
dbcae088 | 2642 | err = -ENOMEM; |
a40c4f10 | 2643 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); |
dbcae088 | 2644 | if (!osdc->notify_wq) |
c172ec5c ID |
2645 | goto out_msgpool_reply; |
2646 | ||
f24e9980 | 2647 | return 0; |
5f44f142 | 2648 | |
c172ec5c ID |
2649 | out_msgpool_reply: |
2650 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); | |
c16e7869 SW |
2651 | out_msgpool: |
2652 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
2653 | out_mempool: |
2654 | mempool_destroy(osdc->req_mempool); | |
2655 | out: | |
2656 | return err; | |
f24e9980 SW |
2657 | } |
2658 | ||
2659 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
2660 | { | |
a40c4f10 YS |
2661 | flush_workqueue(osdc->notify_wq); |
2662 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 2663 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 2664 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
f24e9980 SW |
2665 | if (osdc->osdmap) { |
2666 | ceph_osdmap_destroy(osdc->osdmap); | |
2667 | osdc->osdmap = NULL; | |
2668 | } | |
aca420bc | 2669 | remove_all_osds(osdc); |
f24e9980 SW |
2670 | mempool_destroy(osdc->req_mempool); |
2671 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 2672 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
2673 | } |
2674 | ||
2675 | /* | |
2676 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
2677 | * *plen. Return number of bytes read, or error. | |
2678 | */ | |
2679 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
2680 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
2681 | u64 off, u64 *plen, | |
2682 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 2683 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
2684 | { |
2685 | struct ceph_osd_request *req; | |
2686 | int rc = 0; | |
2687 | ||
2688 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
2689 | vino.snap, off, *plen); | |
79528734 | 2690 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1, |
f24e9980 | 2691 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, |
acead002 | 2692 | NULL, truncate_seq, truncate_size, |
153e5167 | 2693 | false); |
6816282d SW |
2694 | if (IS_ERR(req)) |
2695 | return PTR_ERR(req); | |
f24e9980 SW |
2696 | |
2697 | /* it may be a short read due to an object boundary */ | |
0fff87ec | 2698 | |
406e2c9f | 2699 | osd_req_op_extent_osd_data_pages(req, 0, |
a4ce40a9 | 2700 | pages, *plen, page_align, false, false); |
f24e9980 | 2701 | |
e0c59487 | 2702 | dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", |
43bfe5de | 2703 | off, *plen, *plen, page_align); |
f24e9980 | 2704 | |
79528734 | 2705 | ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); |
02ee07d3 | 2706 | |
f24e9980 SW |
2707 | rc = ceph_osdc_start_request(osdc, req, false); |
2708 | if (!rc) | |
2709 | rc = ceph_osdc_wait_request(osdc, req); | |
2710 | ||
2711 | ceph_osdc_put_request(req); | |
2712 | dout("readpages result %d\n", rc); | |
2713 | return rc; | |
2714 | } | |
3d14c5d2 | 2715 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
2716 | |
2717 | /* | |
2718 | * do a synchronous write on N pages | |
2719 | */ | |
2720 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
2721 | struct ceph_file_layout *layout, | |
2722 | struct ceph_snap_context *snapc, | |
2723 | u64 off, u64 len, | |
2724 | u32 truncate_seq, u64 truncate_size, | |
2725 | struct timespec *mtime, | |
24808826 | 2726 | struct page **pages, int num_pages) |
f24e9980 SW |
2727 | { |
2728 | struct ceph_osd_request *req; | |
2729 | int rc = 0; | |
b7495fc2 | 2730 | int page_align = off & ~PAGE_MASK; |
f24e9980 | 2731 | |
acead002 | 2732 | BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ |
79528734 | 2733 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1, |
f24e9980 | 2734 | CEPH_OSD_OP_WRITE, |
24808826 | 2735 | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, |
acead002 | 2736 | snapc, truncate_seq, truncate_size, |
153e5167 | 2737 | true); |
6816282d SW |
2738 | if (IS_ERR(req)) |
2739 | return PTR_ERR(req); | |
f24e9980 SW |
2740 | |
2741 | /* it may be a short write due to an object boundary */ | |
406e2c9f | 2742 | osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, |
43bfe5de AE |
2743 | false, false); |
2744 | dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); | |
f24e9980 | 2745 | |
79528734 | 2746 | ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); |
02ee07d3 | 2747 | |
87f979d3 | 2748 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
2749 | if (!rc) |
2750 | rc = ceph_osdc_wait_request(osdc, req); | |
2751 | ||
2752 | ceph_osdc_put_request(req); | |
2753 | if (rc == 0) | |
2754 | rc = len; | |
2755 | dout("writepages result %d\n", rc); | |
2756 | return rc; | |
2757 | } | |
3d14c5d2 | 2758 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 | 2759 | |
5522ae0b AE |
2760 | int ceph_osdc_setup(void) |
2761 | { | |
2762 | BUG_ON(ceph_osd_request_cache); | |
2763 | ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", | |
2764 | sizeof (struct ceph_osd_request), | |
2765 | __alignof__(struct ceph_osd_request), | |
2766 | 0, NULL); | |
2767 | ||
2768 | return ceph_osd_request_cache ? 0 : -ENOMEM; | |
2769 | } | |
2770 | EXPORT_SYMBOL(ceph_osdc_setup); | |
2771 | ||
2772 | void ceph_osdc_cleanup(void) | |
2773 | { | |
2774 | BUG_ON(!ceph_osd_request_cache); | |
2775 | kmem_cache_destroy(ceph_osd_request_cache); | |
2776 | ceph_osd_request_cache = NULL; | |
2777 | } | |
2778 | EXPORT_SYMBOL(ceph_osdc_cleanup); | |
2779 | ||
f24e9980 SW |
2780 | /* |
2781 | * handle incoming message | |
2782 | */ | |
2783 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
2784 | { | |
2785 | struct ceph_osd *osd = con->private; | |
32c895e7 | 2786 | struct ceph_osd_client *osdc; |
f24e9980 SW |
2787 | int type = le16_to_cpu(msg->hdr.type); |
2788 | ||
2789 | if (!osd) | |
4a32f93d | 2790 | goto out; |
32c895e7 | 2791 | osdc = osd->o_osdc; |
f24e9980 SW |
2792 | |
2793 | switch (type) { | |
2794 | case CEPH_MSG_OSD_MAP: | |
2795 | ceph_osdc_handle_map(osdc, msg); | |
2796 | break; | |
2797 | case CEPH_MSG_OSD_OPREPLY: | |
350b1c32 | 2798 | handle_reply(osdc, msg, con); |
f24e9980 | 2799 | break; |
a40c4f10 YS |
2800 | case CEPH_MSG_WATCH_NOTIFY: |
2801 | handle_watch_notify(osdc, msg); | |
2802 | break; | |
f24e9980 SW |
2803 | |
2804 | default: | |
2805 | pr_err("received unknown message type %d %s\n", type, | |
2806 | ceph_msg_type_name(type)); | |
2807 | } | |
4a32f93d | 2808 | out: |
f24e9980 SW |
2809 | ceph_msg_put(msg); |
2810 | } | |
2811 | ||
5b3a4db3 | 2812 | /* |
21b667f6 SW |
2813 | * lookup and return message for incoming reply. set up reply message |
2814 | * pages. | |
5b3a4db3 SW |
2815 | */ |
2816 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
2817 | struct ceph_msg_header *hdr, |
2818 | int *skip) | |
f24e9980 SW |
2819 | { |
2820 | struct ceph_osd *osd = con->private; | |
2821 | struct ceph_osd_client *osdc = osd->o_osdc; | |
2450418c | 2822 | struct ceph_msg *m; |
0547a9b3 | 2823 | struct ceph_osd_request *req; |
3f0a4ac5 | 2824 | int front_len = le32_to_cpu(hdr->front_len); |
5b3a4db3 | 2825 | int data_len = le32_to_cpu(hdr->data_len); |
0547a9b3 | 2826 | u64 tid; |
f24e9980 | 2827 | |
0547a9b3 YS |
2828 | tid = le64_to_cpu(hdr->tid); |
2829 | mutex_lock(&osdc->request_mutex); | |
2830 | req = __lookup_request(osdc, tid); | |
2831 | if (!req) { | |
2832 | *skip = 1; | |
2833 | m = NULL; | |
756a16a5 SW |
2834 | dout("get_reply unknown tid %llu from osd%d\n", tid, |
2835 | osd->o_osd); | |
0547a9b3 YS |
2836 | goto out; |
2837 | } | |
c16e7869 | 2838 | |
ace6d3a9 | 2839 | if (req->r_reply->con) |
8921d114 | 2840 | dout("%s revoking msg %p from old con %p\n", __func__, |
ace6d3a9 AE |
2841 | req->r_reply, req->r_reply->con); |
2842 | ceph_msg_revoke_incoming(req->r_reply); | |
0547a9b3 | 2843 | |
f2be82b0 | 2844 | if (front_len > req->r_reply->front_alloc_len) { |
b9a67899 JP |
2845 | pr_warn("get_reply front %d > preallocated %d (%u#%llu)\n", |
2846 | front_len, req->r_reply->front_alloc_len, | |
2847 | (unsigned int)con->peer_name.type, | |
2848 | le64_to_cpu(con->peer_name.num)); | |
3f0a4ac5 ID |
2849 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, |
2850 | false); | |
a79832f2 | 2851 | if (!m) |
c16e7869 SW |
2852 | goto out; |
2853 | ceph_msg_put(req->r_reply); | |
2854 | req->r_reply = m; | |
2855 | } | |
2856 | m = ceph_msg_get(req->r_reply); | |
2857 | ||
0547a9b3 | 2858 | if (data_len > 0) { |
a4ce40a9 | 2859 | struct ceph_osd_data *osd_data; |
0fff87ec | 2860 | |
a4ce40a9 AE |
2861 | /* |
2862 | * XXX This is assuming there is only one op containing | |
2863 | * XXX page data. Probably OK for reads, but this | |
2864 | * XXX ought to be done more generally. | |
2865 | */ | |
406e2c9f | 2866 | osd_data = osd_req_op_extent_osd_data(req, 0); |
0fff87ec | 2867 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { |
0fff87ec | 2868 | if (osd_data->pages && |
e0c59487 | 2869 | unlikely(osd_data->length < data_len)) { |
2ac2b7a6 | 2870 | |
b9a67899 | 2871 | pr_warn("tid %lld reply has %d bytes we had only %llu bytes ready\n", |
e0c59487 | 2872 | tid, data_len, osd_data->length); |
2ac2b7a6 AE |
2873 | *skip = 1; |
2874 | ceph_msg_put(m); | |
2875 | m = NULL; | |
2876 | goto out; | |
2877 | } | |
2ac2b7a6 | 2878 | } |
0547a9b3 | 2879 | } |
5b3a4db3 | 2880 | *skip = 0; |
c16e7869 | 2881 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 YS |
2882 | |
2883 | out: | |
2884 | mutex_unlock(&osdc->request_mutex); | |
2450418c | 2885 | return m; |
5b3a4db3 SW |
2886 | |
2887 | } | |
2888 | ||
2889 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, | |
2890 | struct ceph_msg_header *hdr, | |
2891 | int *skip) | |
2892 | { | |
2893 | struct ceph_osd *osd = con->private; | |
2894 | int type = le16_to_cpu(hdr->type); | |
2895 | int front = le32_to_cpu(hdr->front_len); | |
2896 | ||
1c20f2d2 | 2897 | *skip = 0; |
5b3a4db3 SW |
2898 | switch (type) { |
2899 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 2900 | case CEPH_MSG_WATCH_NOTIFY: |
b61c2763 | 2901 | return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3 SW |
2902 | case CEPH_MSG_OSD_OPREPLY: |
2903 | return get_reply(con, hdr, skip); | |
2904 | default: | |
2905 | pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, | |
2906 | osd->o_osd); | |
2907 | *skip = 1; | |
2908 | return NULL; | |
2909 | } | |
f24e9980 SW |
2910 | } |
2911 | ||
2912 | /* | |
2913 | * Wrappers to refcount containing ceph_osd struct | |
2914 | */ | |
2915 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
2916 | { | |
2917 | struct ceph_osd *osd = con->private; | |
2918 | if (get_osd(osd)) | |
2919 | return con; | |
2920 | return NULL; | |
2921 | } | |
2922 | ||
2923 | static void put_osd_con(struct ceph_connection *con) | |
2924 | { | |
2925 | struct ceph_osd *osd = con->private; | |
2926 | put_osd(osd); | |
2927 | } | |
2928 | ||
4e7a5dcd SW |
2929 | /* |
2930 | * authentication | |
2931 | */ | |
a3530df3 AE |
2932 | /* |
2933 | * Note: returned pointer is the address of a structure that's | |
2934 | * managed separately. Caller must *not* attempt to free it. | |
2935 | */ | |
2936 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 2937 | int *proto, int force_new) |
4e7a5dcd SW |
2938 | { |
2939 | struct ceph_osd *o = con->private; | |
2940 | struct ceph_osd_client *osdc = o->o_osdc; | |
2941 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 2942 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 2943 | |
74f1869f | 2944 | if (force_new && auth->authorizer) { |
27859f97 | 2945 | ceph_auth_destroy_authorizer(ac, auth->authorizer); |
74f1869f AE |
2946 | auth->authorizer = NULL; |
2947 | } | |
27859f97 SW |
2948 | if (!auth->authorizer) { |
2949 | int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
2950 | auth); | |
4e7a5dcd | 2951 | if (ret) |
a3530df3 | 2952 | return ERR_PTR(ret); |
27859f97 SW |
2953 | } else { |
2954 | int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
0bed9b5c SW |
2955 | auth); |
2956 | if (ret) | |
2957 | return ERR_PTR(ret); | |
4e7a5dcd | 2958 | } |
4e7a5dcd | 2959 | *proto = ac->protocol; |
74f1869f | 2960 | |
a3530df3 | 2961 | return auth; |
4e7a5dcd SW |
2962 | } |
2963 | ||
2964 | ||
2965 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
2966 | { | |
2967 | struct ceph_osd *o = con->private; | |
2968 | struct ceph_osd_client *osdc = o->o_osdc; | |
2969 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2970 | ||
27859f97 | 2971 | return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
2972 | } |
2973 | ||
9bd2e6f8 SW |
2974 | static int invalidate_authorizer(struct ceph_connection *con) |
2975 | { | |
2976 | struct ceph_osd *o = con->private; | |
2977 | struct ceph_osd_client *osdc = o->o_osdc; | |
2978 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2979 | ||
27859f97 | 2980 | ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
9bd2e6f8 SW |
2981 | return ceph_monc_validate_auth(&osdc->client->monc); |
2982 | } | |
4e7a5dcd | 2983 | |
9e32789f | 2984 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
2985 | .get = get_osd_con, |
2986 | .put = put_osd_con, | |
2987 | .dispatch = dispatch, | |
4e7a5dcd SW |
2988 | .get_authorizer = get_authorizer, |
2989 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 2990 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 2991 | .alloc_msg = alloc_msg, |
81b024e7 | 2992 | .fault = osd_reset, |
f24e9980 | 2993 | }; |