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); | |
33 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
34 | struct ceph_osd_request *req); | |
56e925b6 SW |
35 | static void __send_request(struct ceph_osd_client *osdc, |
36 | struct ceph_osd_request *req); | |
f24e9980 SW |
37 | |
38 | /* | |
39 | * Implement client access to distributed object storage cluster. | |
40 | * | |
41 | * All data objects are stored within a cluster/cloud of OSDs, or | |
42 | * "object storage devices." (Note that Ceph OSDs have _nothing_ to | |
43 | * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply | |
44 | * remote daemons serving up and coordinating consistent and safe | |
45 | * access to storage. | |
46 | * | |
47 | * Cluster membership and the mapping of data objects onto storage devices | |
48 | * are described by the osd map. | |
49 | * | |
50 | * We keep track of pending OSD requests (read, write), resubmit | |
51 | * requests to different OSDs when the cluster topology/data layout | |
52 | * change, or retry the affected requests when the communications | |
53 | * channel with an OSD is reset. | |
54 | */ | |
55 | ||
56 | /* | |
57 | * calculate the mapping of a file extent onto an object, and fill out the | |
58 | * request accordingly. shorten extent as necessary if it crosses an | |
59 | * object boundary. | |
60 | * | |
61 | * fill osd op in request message. | |
62 | */ | |
dbe0fc41 | 63 | static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, |
a19dadfb | 64 | u64 *objnum, u64 *objoff, u64 *objlen) |
f24e9980 | 65 | { |
60e56f13 | 66 | u64 orig_len = *plen; |
d63b77f4 | 67 | int r; |
f24e9980 | 68 | |
60e56f13 | 69 | /* object extent? */ |
75d1c941 AE |
70 | r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, |
71 | objoff, objlen); | |
d63b77f4 SW |
72 | if (r < 0) |
73 | return r; | |
75d1c941 AE |
74 | if (*objlen < orig_len) { |
75 | *plen = *objlen; | |
60e56f13 AE |
76 | dout(" skipping last %llu, final file extent %llu~%llu\n", |
77 | orig_len - *plen, off, *plen); | |
78 | } | |
79 | ||
75d1c941 | 80 | dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); |
f24e9980 | 81 | |
3ff5f385 | 82 | return 0; |
f24e9980 SW |
83 | } |
84 | ||
c54d47bf AE |
85 | static void ceph_osd_data_init(struct ceph_osd_data *osd_data) |
86 | { | |
87 | memset(osd_data, 0, sizeof (*osd_data)); | |
88 | osd_data->type = CEPH_OSD_DATA_TYPE_NONE; | |
89 | } | |
90 | ||
a4ce40a9 | 91 | static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
92 | struct page **pages, u64 length, u32 alignment, |
93 | bool pages_from_pool, bool own_pages) | |
94 | { | |
95 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; | |
96 | osd_data->pages = pages; | |
97 | osd_data->length = length; | |
98 | osd_data->alignment = alignment; | |
99 | osd_data->pages_from_pool = pages_from_pool; | |
100 | osd_data->own_pages = own_pages; | |
101 | } | |
43bfe5de | 102 | |
a4ce40a9 | 103 | static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
104 | struct ceph_pagelist *pagelist) |
105 | { | |
106 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; | |
107 | osd_data->pagelist = pagelist; | |
108 | } | |
43bfe5de AE |
109 | |
110 | #ifdef CONFIG_BLOCK | |
a4ce40a9 | 111 | static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
112 | struct bio *bio, size_t bio_length) |
113 | { | |
114 | osd_data->type = CEPH_OSD_DATA_TYPE_BIO; | |
115 | osd_data->bio = bio; | |
116 | osd_data->bio_length = bio_length; | |
117 | } | |
43bfe5de AE |
118 | #endif /* CONFIG_BLOCK */ |
119 | ||
863c7eb5 AE |
120 | #define osd_req_op_data(oreq, whch, typ, fld) \ |
121 | ({ \ | |
122 | BUG_ON(whch >= (oreq)->r_num_ops); \ | |
123 | &(oreq)->r_ops[whch].typ.fld; \ | |
124 | }) | |
125 | ||
49719778 AE |
126 | static struct ceph_osd_data * |
127 | osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) | |
128 | { | |
129 | BUG_ON(which >= osd_req->r_num_ops); | |
130 | ||
131 | return &osd_req->r_ops[which].raw_data_in; | |
132 | } | |
133 | ||
a4ce40a9 AE |
134 | struct ceph_osd_data * |
135 | osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, | |
406e2c9f | 136 | unsigned int which) |
a4ce40a9 | 137 | { |
863c7eb5 | 138 | return osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
139 | } |
140 | EXPORT_SYMBOL(osd_req_op_extent_osd_data); | |
141 | ||
a4ce40a9 AE |
142 | struct ceph_osd_data * |
143 | osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, | |
144 | unsigned int which) | |
145 | { | |
863c7eb5 | 146 | return osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
147 | } |
148 | EXPORT_SYMBOL(osd_req_op_cls_response_data); /* ??? */ | |
149 | ||
49719778 AE |
150 | void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, |
151 | unsigned int which, struct page **pages, | |
152 | u64 length, u32 alignment, | |
153 | bool pages_from_pool, bool own_pages) | |
154 | { | |
155 | struct ceph_osd_data *osd_data; | |
156 | ||
157 | osd_data = osd_req_op_raw_data_in(osd_req, which); | |
158 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
159 | pages_from_pool, own_pages); | |
160 | } | |
161 | EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); | |
162 | ||
a4ce40a9 | 163 | void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, |
406e2c9f AE |
164 | unsigned int which, struct page **pages, |
165 | u64 length, u32 alignment, | |
a4ce40a9 AE |
166 | bool pages_from_pool, bool own_pages) |
167 | { | |
168 | struct ceph_osd_data *osd_data; | |
169 | ||
863c7eb5 | 170 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
171 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
172 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
173 | } |
174 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); | |
175 | ||
176 | void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, | |
406e2c9f | 177 | unsigned int which, struct ceph_pagelist *pagelist) |
a4ce40a9 AE |
178 | { |
179 | struct ceph_osd_data *osd_data; | |
180 | ||
863c7eb5 | 181 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 | 182 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
183 | } |
184 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); | |
185 | ||
186 | #ifdef CONFIG_BLOCK | |
187 | void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, | |
406e2c9f | 188 | unsigned int which, struct bio *bio, size_t bio_length) |
a4ce40a9 AE |
189 | { |
190 | struct ceph_osd_data *osd_data; | |
863c7eb5 AE |
191 | |
192 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); | |
a4ce40a9 | 193 | ceph_osd_data_bio_init(osd_data, bio, bio_length); |
a4ce40a9 AE |
194 | } |
195 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); | |
196 | #endif /* CONFIG_BLOCK */ | |
197 | ||
198 | static void osd_req_op_cls_request_info_pagelist( | |
199 | struct ceph_osd_request *osd_req, | |
200 | unsigned int which, struct ceph_pagelist *pagelist) | |
201 | { | |
202 | struct ceph_osd_data *osd_data; | |
203 | ||
863c7eb5 | 204 | osd_data = osd_req_op_data(osd_req, which, cls, request_info); |
a4ce40a9 | 205 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
206 | } |
207 | ||
04017e29 AE |
208 | void osd_req_op_cls_request_data_pagelist( |
209 | struct ceph_osd_request *osd_req, | |
210 | unsigned int which, struct ceph_pagelist *pagelist) | |
211 | { | |
212 | struct ceph_osd_data *osd_data; | |
213 | ||
863c7eb5 | 214 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); |
04017e29 AE |
215 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
216 | } | |
217 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); | |
218 | ||
6c57b554 AE |
219 | void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, |
220 | unsigned int which, struct page **pages, u64 length, | |
221 | u32 alignment, bool pages_from_pool, bool own_pages) | |
222 | { | |
223 | struct ceph_osd_data *osd_data; | |
224 | ||
225 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); | |
226 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
227 | pages_from_pool, own_pages); | |
228 | } | |
229 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); | |
230 | ||
a4ce40a9 AE |
231 | void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, |
232 | unsigned int which, struct page **pages, u64 length, | |
233 | u32 alignment, bool pages_from_pool, bool own_pages) | |
234 | { | |
235 | struct ceph_osd_data *osd_data; | |
236 | ||
863c7eb5 | 237 | osd_data = osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
238 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
239 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
240 | } |
241 | EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); | |
242 | ||
23c08a9c AE |
243 | static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) |
244 | { | |
245 | switch (osd_data->type) { | |
246 | case CEPH_OSD_DATA_TYPE_NONE: | |
247 | return 0; | |
248 | case CEPH_OSD_DATA_TYPE_PAGES: | |
249 | return osd_data->length; | |
250 | case CEPH_OSD_DATA_TYPE_PAGELIST: | |
251 | return (u64)osd_data->pagelist->length; | |
252 | #ifdef CONFIG_BLOCK | |
253 | case CEPH_OSD_DATA_TYPE_BIO: | |
254 | return (u64)osd_data->bio_length; | |
255 | #endif /* CONFIG_BLOCK */ | |
256 | default: | |
257 | WARN(true, "unrecognized data type %d\n", (int)osd_data->type); | |
258 | return 0; | |
259 | } | |
260 | } | |
261 | ||
c54d47bf AE |
262 | static void ceph_osd_data_release(struct ceph_osd_data *osd_data) |
263 | { | |
5476492f | 264 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { |
c54d47bf AE |
265 | int num_pages; |
266 | ||
267 | num_pages = calc_pages_for((u64)osd_data->alignment, | |
268 | (u64)osd_data->length); | |
269 | ceph_release_page_vector(osd_data->pages, num_pages); | |
270 | } | |
5476492f AE |
271 | ceph_osd_data_init(osd_data); |
272 | } | |
273 | ||
274 | static void osd_req_op_data_release(struct ceph_osd_request *osd_req, | |
275 | unsigned int which) | |
276 | { | |
277 | struct ceph_osd_req_op *op; | |
278 | ||
279 | BUG_ON(which >= osd_req->r_num_ops); | |
280 | op = &osd_req->r_ops[which]; | |
281 | ||
282 | switch (op->op) { | |
283 | case CEPH_OSD_OP_READ: | |
284 | case CEPH_OSD_OP_WRITE: | |
285 | ceph_osd_data_release(&op->extent.osd_data); | |
286 | break; | |
287 | case CEPH_OSD_OP_CALL: | |
288 | ceph_osd_data_release(&op->cls.request_info); | |
04017e29 | 289 | ceph_osd_data_release(&op->cls.request_data); |
5476492f AE |
290 | ceph_osd_data_release(&op->cls.response_data); |
291 | break; | |
292 | default: | |
293 | break; | |
294 | } | |
c54d47bf AE |
295 | } |
296 | ||
f24e9980 SW |
297 | /* |
298 | * requests | |
299 | */ | |
415e49a9 | 300 | void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 301 | { |
c54d47bf | 302 | struct ceph_osd_request *req; |
5476492f | 303 | unsigned int which; |
415e49a9 | 304 | |
c54d47bf | 305 | req = container_of(kref, struct ceph_osd_request, r_kref); |
415e49a9 SW |
306 | if (req->r_request) |
307 | ceph_msg_put(req->r_request); | |
ace6d3a9 | 308 | if (req->r_reply) { |
8921d114 | 309 | ceph_msg_revoke_incoming(req->r_reply); |
ab8cb34a | 310 | ceph_msg_put(req->r_reply); |
ace6d3a9 | 311 | } |
0fff87ec | 312 | |
5476492f AE |
313 | for (which = 0; which < req->r_num_ops; which++) |
314 | osd_req_op_data_release(req, which); | |
0fff87ec | 315 | |
415e49a9 SW |
316 | ceph_put_snap_context(req->r_snapc); |
317 | if (req->r_mempool) | |
318 | mempool_free(req, req->r_osdc->req_mempool); | |
319 | else | |
5522ae0b AE |
320 | kmem_cache_free(ceph_osd_request_cache, req); |
321 | ||
f24e9980 | 322 | } |
3d14c5d2 | 323 | EXPORT_SYMBOL(ceph_osdc_release_request); |
68b4476b | 324 | |
3499e8a5 | 325 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 326 | struct ceph_snap_context *snapc, |
1b83bef2 | 327 | unsigned int num_ops, |
3499e8a5 | 328 | bool use_mempool, |
54a54007 | 329 | gfp_t gfp_flags) |
f24e9980 SW |
330 | { |
331 | struct ceph_osd_request *req; | |
332 | struct ceph_msg *msg; | |
1b83bef2 SW |
333 | size_t msg_size; |
334 | ||
79528734 AE |
335 | BUILD_BUG_ON(CEPH_OSD_MAX_OP > U16_MAX); |
336 | BUG_ON(num_ops > CEPH_OSD_MAX_OP); | |
337 | ||
1b83bef2 SW |
338 | msg_size = 4 + 4 + 8 + 8 + 4+8; |
339 | msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ | |
340 | msg_size += 1 + 8 + 4 + 4; /* pg_t */ | |
341 | msg_size += 4 + MAX_OBJ_NAME_SIZE; | |
342 | msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); | |
343 | msg_size += 8; /* snapid */ | |
344 | msg_size += 8; /* snap_seq */ | |
345 | msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ | |
346 | msg_size += 4; | |
f24e9980 SW |
347 | |
348 | if (use_mempool) { | |
3499e8a5 | 349 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
f24e9980 SW |
350 | memset(req, 0, sizeof(*req)); |
351 | } else { | |
5522ae0b | 352 | req = kmem_cache_zalloc(ceph_osd_request_cache, gfp_flags); |
f24e9980 SW |
353 | } |
354 | if (req == NULL) | |
a79832f2 | 355 | return NULL; |
f24e9980 | 356 | |
f24e9980 SW |
357 | req->r_osdc = osdc; |
358 | req->r_mempool = use_mempool; | |
79528734 | 359 | req->r_num_ops = num_ops; |
68b4476b | 360 | |
415e49a9 | 361 | kref_init(&req->r_kref); |
f24e9980 SW |
362 | init_completion(&req->r_completion); |
363 | init_completion(&req->r_safe_completion); | |
a978fa20 | 364 | RB_CLEAR_NODE(&req->r_node); |
f24e9980 | 365 | INIT_LIST_HEAD(&req->r_unsafe_item); |
a40c4f10 YS |
366 | INIT_LIST_HEAD(&req->r_linger_item); |
367 | INIT_LIST_HEAD(&req->r_linger_osd); | |
935b639a | 368 | INIT_LIST_HEAD(&req->r_req_lru_item); |
cd43045c SW |
369 | INIT_LIST_HEAD(&req->r_osd_item); |
370 | ||
c16e7869 SW |
371 | /* create reply message */ |
372 | if (use_mempool) | |
373 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
374 | else | |
375 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, | |
b61c2763 | 376 | OSD_OPREPLY_FRONT_LEN, gfp_flags, true); |
a79832f2 | 377 | if (!msg) { |
c16e7869 | 378 | ceph_osdc_put_request(req); |
a79832f2 | 379 | return NULL; |
c16e7869 SW |
380 | } |
381 | req->r_reply = msg; | |
382 | ||
383 | /* create request message; allow space for oid */ | |
f24e9980 | 384 | if (use_mempool) |
8f3bc053 | 385 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 386 | else |
b61c2763 | 387 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); |
a79832f2 | 388 | if (!msg) { |
f24e9980 | 389 | ceph_osdc_put_request(req); |
a79832f2 | 390 | return NULL; |
f24e9980 | 391 | } |
68b4476b | 392 | |
f24e9980 | 393 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 YS |
394 | |
395 | req->r_request = msg; | |
3499e8a5 YS |
396 | |
397 | return req; | |
398 | } | |
3d14c5d2 | 399 | EXPORT_SYMBOL(ceph_osdc_alloc_request); |
3499e8a5 | 400 | |
a8dd0a37 | 401 | static bool osd_req_opcode_valid(u16 opcode) |
68b4476b | 402 | { |
a8dd0a37 | 403 | switch (opcode) { |
68b4476b | 404 | case CEPH_OSD_OP_READ: |
a8dd0a37 | 405 | case CEPH_OSD_OP_STAT: |
4c46459c AE |
406 | case CEPH_OSD_OP_MAPEXT: |
407 | case CEPH_OSD_OP_MASKTRUNC: | |
408 | case CEPH_OSD_OP_SPARSE_READ: | |
a9f36c3e | 409 | case CEPH_OSD_OP_NOTIFY: |
a8dd0a37 | 410 | case CEPH_OSD_OP_NOTIFY_ACK: |
4c46459c | 411 | case CEPH_OSD_OP_ASSERT_VER: |
a8dd0a37 | 412 | case CEPH_OSD_OP_WRITE: |
4c46459c AE |
413 | case CEPH_OSD_OP_WRITEFULL: |
414 | case CEPH_OSD_OP_TRUNCATE: | |
415 | case CEPH_OSD_OP_ZERO: | |
416 | case CEPH_OSD_OP_DELETE: | |
417 | case CEPH_OSD_OP_APPEND: | |
a8dd0a37 | 418 | case CEPH_OSD_OP_STARTSYNC: |
4c46459c AE |
419 | case CEPH_OSD_OP_SETTRUNC: |
420 | case CEPH_OSD_OP_TRIMTRUNC: | |
421 | case CEPH_OSD_OP_TMAPUP: | |
422 | case CEPH_OSD_OP_TMAPPUT: | |
423 | case CEPH_OSD_OP_TMAPGET: | |
424 | case CEPH_OSD_OP_CREATE: | |
a9f36c3e | 425 | case CEPH_OSD_OP_ROLLBACK: |
a8dd0a37 | 426 | case CEPH_OSD_OP_WATCH: |
4c46459c AE |
427 | case CEPH_OSD_OP_OMAPGETKEYS: |
428 | case CEPH_OSD_OP_OMAPGETVALS: | |
429 | case CEPH_OSD_OP_OMAPGETHEADER: | |
430 | case CEPH_OSD_OP_OMAPGETVALSBYKEYS: | |
4c46459c AE |
431 | case CEPH_OSD_OP_OMAPSETVALS: |
432 | case CEPH_OSD_OP_OMAPSETHEADER: | |
433 | case CEPH_OSD_OP_OMAPCLEAR: | |
434 | case CEPH_OSD_OP_OMAPRMKEYS: | |
435 | case CEPH_OSD_OP_OMAP_CMP: | |
436 | case CEPH_OSD_OP_CLONERANGE: | |
437 | case CEPH_OSD_OP_ASSERT_SRC_VERSION: | |
438 | case CEPH_OSD_OP_SRC_CMPXATTR: | |
a9f36c3e | 439 | case CEPH_OSD_OP_GETXATTR: |
4c46459c | 440 | case CEPH_OSD_OP_GETXATTRS: |
a9f36c3e AE |
441 | case CEPH_OSD_OP_CMPXATTR: |
442 | case CEPH_OSD_OP_SETXATTR: | |
4c46459c AE |
443 | case CEPH_OSD_OP_SETXATTRS: |
444 | case CEPH_OSD_OP_RESETXATTRS: | |
445 | case CEPH_OSD_OP_RMXATTR: | |
446 | case CEPH_OSD_OP_PULL: | |
447 | case CEPH_OSD_OP_PUSH: | |
448 | case CEPH_OSD_OP_BALANCEREADS: | |
449 | case CEPH_OSD_OP_UNBALANCEREADS: | |
450 | case CEPH_OSD_OP_SCRUB: | |
451 | case CEPH_OSD_OP_SCRUB_RESERVE: | |
452 | case CEPH_OSD_OP_SCRUB_UNRESERVE: | |
453 | case CEPH_OSD_OP_SCRUB_STOP: | |
454 | case CEPH_OSD_OP_SCRUB_MAP: | |
455 | case CEPH_OSD_OP_WRLOCK: | |
456 | case CEPH_OSD_OP_WRUNLOCK: | |
457 | case CEPH_OSD_OP_RDLOCK: | |
458 | case CEPH_OSD_OP_RDUNLOCK: | |
459 | case CEPH_OSD_OP_UPLOCK: | |
460 | case CEPH_OSD_OP_DNLOCK: | |
a8dd0a37 | 461 | case CEPH_OSD_OP_CALL: |
4c46459c AE |
462 | case CEPH_OSD_OP_PGLS: |
463 | case CEPH_OSD_OP_PGLS_FILTER: | |
a8dd0a37 AE |
464 | return true; |
465 | default: | |
466 | return false; | |
467 | } | |
468 | } | |
469 | ||
33803f33 AE |
470 | /* |
471 | * This is an osd op init function for opcodes that have no data or | |
472 | * other information associated with them. It also serves as a | |
473 | * common init routine for all the other init functions, below. | |
474 | */ | |
c99d2d4a | 475 | static struct ceph_osd_req_op * |
49719778 | 476 | _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, |
c99d2d4a | 477 | u16 opcode) |
33803f33 | 478 | { |
c99d2d4a AE |
479 | struct ceph_osd_req_op *op; |
480 | ||
481 | BUG_ON(which >= osd_req->r_num_ops); | |
33803f33 AE |
482 | BUG_ON(!osd_req_opcode_valid(opcode)); |
483 | ||
c99d2d4a | 484 | op = &osd_req->r_ops[which]; |
33803f33 | 485 | memset(op, 0, sizeof (*op)); |
33803f33 | 486 | op->op = opcode; |
c99d2d4a AE |
487 | |
488 | return op; | |
33803f33 AE |
489 | } |
490 | ||
49719778 AE |
491 | void osd_req_op_init(struct ceph_osd_request *osd_req, |
492 | unsigned int which, u16 opcode) | |
493 | { | |
494 | (void)_osd_req_op_init(osd_req, which, opcode); | |
495 | } | |
496 | EXPORT_SYMBOL(osd_req_op_init); | |
497 | ||
c99d2d4a AE |
498 | void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
499 | unsigned int which, u16 opcode, | |
33803f33 AE |
500 | u64 offset, u64 length, |
501 | u64 truncate_size, u32 truncate_seq) | |
502 | { | |
49719778 | 503 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); |
33803f33 AE |
504 | size_t payload_len = 0; |
505 | ||
ad7a60de LW |
506 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
507 | opcode != CEPH_OSD_OP_DELETE && opcode != CEPH_OSD_OP_ZERO && | |
508 | opcode != CEPH_OSD_OP_TRUNCATE); | |
33803f33 | 509 | |
33803f33 AE |
510 | op->extent.offset = offset; |
511 | op->extent.length = length; | |
512 | op->extent.truncate_size = truncate_size; | |
513 | op->extent.truncate_seq = truncate_seq; | |
514 | if (opcode == CEPH_OSD_OP_WRITE) | |
515 | payload_len += length; | |
516 | ||
517 | op->payload_len = payload_len; | |
518 | } | |
519 | EXPORT_SYMBOL(osd_req_op_extent_init); | |
520 | ||
c99d2d4a AE |
521 | void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
522 | unsigned int which, u64 length) | |
e5975c7c | 523 | { |
c99d2d4a AE |
524 | struct ceph_osd_req_op *op; |
525 | u64 previous; | |
526 | ||
527 | BUG_ON(which >= osd_req->r_num_ops); | |
528 | op = &osd_req->r_ops[which]; | |
529 | previous = op->extent.length; | |
e5975c7c AE |
530 | |
531 | if (length == previous) | |
532 | return; /* Nothing to do */ | |
533 | BUG_ON(length > previous); | |
534 | ||
535 | op->extent.length = length; | |
536 | op->payload_len -= previous - length; | |
537 | } | |
538 | EXPORT_SYMBOL(osd_req_op_extent_update); | |
539 | ||
c99d2d4a | 540 | void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, |
04017e29 | 541 | u16 opcode, const char *class, const char *method) |
33803f33 | 542 | { |
49719778 | 543 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); |
5f562df5 | 544 | struct ceph_pagelist *pagelist; |
33803f33 AE |
545 | size_t payload_len = 0; |
546 | size_t size; | |
547 | ||
548 | BUG_ON(opcode != CEPH_OSD_OP_CALL); | |
549 | ||
5f562df5 AE |
550 | pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); |
551 | BUG_ON(!pagelist); | |
552 | ceph_pagelist_init(pagelist); | |
553 | ||
33803f33 AE |
554 | op->cls.class_name = class; |
555 | size = strlen(class); | |
556 | BUG_ON(size > (size_t) U8_MAX); | |
557 | op->cls.class_len = size; | |
5f562df5 | 558 | ceph_pagelist_append(pagelist, class, size); |
33803f33 AE |
559 | payload_len += size; |
560 | ||
561 | op->cls.method_name = method; | |
562 | size = strlen(method); | |
563 | BUG_ON(size > (size_t) U8_MAX); | |
564 | op->cls.method_len = size; | |
5f562df5 | 565 | ceph_pagelist_append(pagelist, method, size); |
33803f33 AE |
566 | payload_len += size; |
567 | ||
a4ce40a9 | 568 | osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); |
5f562df5 | 569 | |
33803f33 AE |
570 | op->cls.argc = 0; /* currently unused */ |
571 | ||
572 | op->payload_len = payload_len; | |
573 | } | |
574 | EXPORT_SYMBOL(osd_req_op_cls_init); | |
8c042b0d | 575 | |
c99d2d4a AE |
576 | void osd_req_op_watch_init(struct ceph_osd_request *osd_req, |
577 | unsigned int which, u16 opcode, | |
33803f33 AE |
578 | u64 cookie, u64 version, int flag) |
579 | { | |
49719778 | 580 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); |
33803f33 | 581 | |
c99d2d4a | 582 | BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); |
33803f33 AE |
583 | |
584 | op->watch.cookie = cookie; | |
9ef1ee5a | 585 | op->watch.ver = version; |
33803f33 | 586 | if (opcode == CEPH_OSD_OP_WATCH && flag) |
c99d2d4a | 587 | op->watch.flag = (u8)1; |
33803f33 AE |
588 | } |
589 | EXPORT_SYMBOL(osd_req_op_watch_init); | |
590 | ||
90af3602 | 591 | static void ceph_osdc_msg_data_add(struct ceph_msg *msg, |
ec9123c5 AE |
592 | struct ceph_osd_data *osd_data) |
593 | { | |
594 | u64 length = ceph_osd_data_length(osd_data); | |
595 | ||
596 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { | |
597 | BUG_ON(length > (u64) SIZE_MAX); | |
598 | if (length) | |
90af3602 | 599 | ceph_msg_data_add_pages(msg, osd_data->pages, |
ec9123c5 AE |
600 | length, osd_data->alignment); |
601 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { | |
602 | BUG_ON(!length); | |
90af3602 | 603 | ceph_msg_data_add_pagelist(msg, osd_data->pagelist); |
ec9123c5 AE |
604 | #ifdef CONFIG_BLOCK |
605 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { | |
90af3602 | 606 | ceph_msg_data_add_bio(msg, osd_data->bio, length); |
ec9123c5 AE |
607 | #endif |
608 | } else { | |
609 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); | |
610 | } | |
611 | } | |
612 | ||
a8dd0a37 | 613 | static u64 osd_req_encode_op(struct ceph_osd_request *req, |
79528734 | 614 | struct ceph_osd_op *dst, unsigned int which) |
a8dd0a37 | 615 | { |
79528734 | 616 | struct ceph_osd_req_op *src; |
04017e29 | 617 | struct ceph_osd_data *osd_data; |
54d50649 | 618 | u64 request_data_len = 0; |
04017e29 | 619 | u64 data_length; |
a8dd0a37 | 620 | |
79528734 AE |
621 | BUG_ON(which >= req->r_num_ops); |
622 | src = &req->r_ops[which]; | |
a8dd0a37 AE |
623 | if (WARN_ON(!osd_req_opcode_valid(src->op))) { |
624 | pr_err("unrecognized osd opcode %d\n", src->op); | |
625 | ||
626 | return 0; | |
627 | } | |
628 | ||
629 | switch (src->op) { | |
630 | case CEPH_OSD_OP_STAT: | |
49719778 AE |
631 | osd_data = &src->raw_data_in; |
632 | ceph_osdc_msg_data_add(req->r_reply, osd_data); | |
a8dd0a37 AE |
633 | break; |
634 | case CEPH_OSD_OP_READ: | |
635 | case CEPH_OSD_OP_WRITE: | |
ad7a60de LW |
636 | case CEPH_OSD_OP_ZERO: |
637 | case CEPH_OSD_OP_DELETE: | |
638 | case CEPH_OSD_OP_TRUNCATE: | |
a8dd0a37 | 639 | if (src->op == CEPH_OSD_OP_WRITE) |
54d50649 | 640 | request_data_len = src->extent.length; |
a8dd0a37 AE |
641 | dst->extent.offset = cpu_to_le64(src->extent.offset); |
642 | dst->extent.length = cpu_to_le64(src->extent.length); | |
643 | dst->extent.truncate_size = | |
644 | cpu_to_le64(src->extent.truncate_size); | |
645 | dst->extent.truncate_seq = | |
646 | cpu_to_le32(src->extent.truncate_seq); | |
04017e29 | 647 | osd_data = &src->extent.osd_data; |
5476492f | 648 | if (src->op == CEPH_OSD_OP_WRITE) |
04017e29 | 649 | ceph_osdc_msg_data_add(req->r_request, osd_data); |
5476492f | 650 | else |
04017e29 | 651 | ceph_osdc_msg_data_add(req->r_reply, osd_data); |
a8dd0a37 AE |
652 | break; |
653 | case CEPH_OSD_OP_CALL: | |
a8dd0a37 AE |
654 | dst->cls.class_len = src->cls.class_len; |
655 | dst->cls.method_len = src->cls.method_len; | |
04017e29 AE |
656 | osd_data = &src->cls.request_info; |
657 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
658 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); | |
659 | request_data_len = osd_data->pagelist->length; | |
660 | ||
661 | osd_data = &src->cls.request_data; | |
662 | data_length = ceph_osd_data_length(osd_data); | |
663 | if (data_length) { | |
664 | BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); | |
665 | dst->cls.indata_len = cpu_to_le32(data_length); | |
666 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
667 | src->payload_len += data_length; | |
668 | request_data_len += data_length; | |
669 | } | |
670 | osd_data = &src->cls.response_data; | |
671 | ceph_osdc_msg_data_add(req->r_reply, osd_data); | |
a8dd0a37 AE |
672 | break; |
673 | case CEPH_OSD_OP_STARTSYNC: | |
674 | break; | |
675 | case CEPH_OSD_OP_NOTIFY_ACK: | |
676 | case CEPH_OSD_OP_WATCH: | |
677 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
678 | dst->watch.ver = cpu_to_le64(src->watch.ver); | |
679 | dst->watch.flag = src->watch.flag; | |
680 | break; | |
681 | default: | |
4c46459c | 682 | pr_err("unsupported osd opcode %s\n", |
8f63ca2d | 683 | ceph_osd_op_name(src->op)); |
4c46459c | 684 | WARN_ON(1); |
a8dd0a37 AE |
685 | |
686 | return 0; | |
68b4476b | 687 | } |
a8dd0a37 | 688 | dst->op = cpu_to_le16(src->op); |
68b4476b | 689 | dst->payload_len = cpu_to_le32(src->payload_len); |
175face2 | 690 | |
54d50649 | 691 | return request_data_len; |
68b4476b YS |
692 | } |
693 | ||
3499e8a5 YS |
694 | /* |
695 | * build new request AND message, calculate layout, and adjust file | |
696 | * extent as needed. | |
697 | * | |
698 | * if the file was recently truncated, we include information about its | |
699 | * old and new size so that the object can be updated appropriately. (we | |
700 | * avoid synchronously deleting truncated objects because it's slow.) | |
701 | * | |
702 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
703 | * data quickly. | |
704 | */ | |
705 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
706 | struct ceph_file_layout *layout, | |
707 | struct ceph_vino vino, | |
acead002 | 708 | u64 off, u64 *plen, int num_ops, |
3499e8a5 YS |
709 | int opcode, int flags, |
710 | struct ceph_snap_context *snapc, | |
3499e8a5 YS |
711 | u32 truncate_seq, |
712 | u64 truncate_size, | |
153e5167 | 713 | bool use_mempool) |
3499e8a5 | 714 | { |
68b4476b | 715 | struct ceph_osd_request *req; |
75d1c941 AE |
716 | u64 objnum = 0; |
717 | u64 objoff = 0; | |
718 | u64 objlen = 0; | |
d18d1e28 AE |
719 | u32 object_size; |
720 | u64 object_base; | |
6816282d | 721 | int r; |
68b4476b | 722 | |
ad7a60de LW |
723 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
724 | opcode != CEPH_OSD_OP_DELETE && opcode != CEPH_OSD_OP_ZERO && | |
725 | opcode != CEPH_OSD_OP_TRUNCATE); | |
68b4476b | 726 | |
acead002 | 727 | req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, |
ae7ca4a3 | 728 | GFP_NOFS); |
4ad12621 | 729 | if (!req) |
6816282d | 730 | return ERR_PTR(-ENOMEM); |
79528734 | 731 | |
d178a9e7 | 732 | req->r_flags = flags; |
3499e8a5 YS |
733 | |
734 | /* calculate max write size */ | |
a19dadfb | 735 | r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); |
3ff5f385 AE |
736 | if (r < 0) { |
737 | ceph_osdc_put_request(req); | |
6816282d | 738 | return ERR_PTR(r); |
3ff5f385 | 739 | } |
a19dadfb | 740 | |
d18d1e28 AE |
741 | object_size = le32_to_cpu(layout->fl_object_size); |
742 | object_base = off - objoff; | |
ccca4e37 YZ |
743 | if (!(truncate_seq == 1 && truncate_size == -1ULL)) { |
744 | if (truncate_size <= object_base) { | |
745 | truncate_size = 0; | |
746 | } else { | |
747 | truncate_size -= object_base; | |
748 | if (truncate_size > object_size) | |
749 | truncate_size = object_size; | |
750 | } | |
a19dadfb | 751 | } |
d18d1e28 | 752 | |
c99d2d4a | 753 | osd_req_op_extent_init(req, 0, opcode, objoff, objlen, |
b0270324 | 754 | truncate_size, truncate_seq); |
8c042b0d | 755 | |
acead002 AE |
756 | /* |
757 | * A second op in the ops array means the caller wants to | |
758 | * also issue a include a 'startsync' command so that the | |
759 | * osd will flush data quickly. | |
760 | */ | |
761 | if (num_ops > 1) | |
c99d2d4a | 762 | osd_req_op_init(req, 1, CEPH_OSD_OP_STARTSYNC); |
d18d1e28 | 763 | |
3499e8a5 YS |
764 | req->r_file_layout = *layout; /* keep a copy */ |
765 | ||
75d1c941 AE |
766 | snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", |
767 | vino.ino, objnum); | |
dbe0fc41 AE |
768 | req->r_oid_len = strlen(req->r_oid); |
769 | ||
f24e9980 SW |
770 | return req; |
771 | } | |
3d14c5d2 | 772 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
773 | |
774 | /* | |
775 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
776 | */ | |
777 | static void __insert_request(struct ceph_osd_client *osdc, | |
778 | struct ceph_osd_request *new) | |
779 | { | |
780 | struct rb_node **p = &osdc->requests.rb_node; | |
781 | struct rb_node *parent = NULL; | |
782 | struct ceph_osd_request *req = NULL; | |
783 | ||
784 | while (*p) { | |
785 | parent = *p; | |
786 | req = rb_entry(parent, struct ceph_osd_request, r_node); | |
787 | if (new->r_tid < req->r_tid) | |
788 | p = &(*p)->rb_left; | |
789 | else if (new->r_tid > req->r_tid) | |
790 | p = &(*p)->rb_right; | |
791 | else | |
792 | BUG(); | |
793 | } | |
794 | ||
795 | rb_link_node(&new->r_node, parent, p); | |
796 | rb_insert_color(&new->r_node, &osdc->requests); | |
797 | } | |
798 | ||
799 | static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, | |
800 | u64 tid) | |
801 | { | |
802 | struct ceph_osd_request *req; | |
803 | struct rb_node *n = osdc->requests.rb_node; | |
804 | ||
805 | while (n) { | |
806 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
807 | if (tid < req->r_tid) | |
808 | n = n->rb_left; | |
809 | else if (tid > req->r_tid) | |
810 | n = n->rb_right; | |
811 | else | |
812 | return req; | |
813 | } | |
814 | return NULL; | |
815 | } | |
816 | ||
817 | static struct ceph_osd_request * | |
818 | __lookup_request_ge(struct ceph_osd_client *osdc, | |
819 | u64 tid) | |
820 | { | |
821 | struct ceph_osd_request *req; | |
822 | struct rb_node *n = osdc->requests.rb_node; | |
823 | ||
824 | while (n) { | |
825 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
826 | if (tid < req->r_tid) { | |
827 | if (!n->rb_left) | |
828 | return req; | |
829 | n = n->rb_left; | |
830 | } else if (tid > req->r_tid) { | |
831 | n = n->rb_right; | |
832 | } else { | |
833 | return req; | |
834 | } | |
835 | } | |
836 | return NULL; | |
837 | } | |
838 | ||
6f6c7006 SW |
839 | /* |
840 | * Resubmit requests pending on the given osd. | |
841 | */ | |
842 | static void __kick_osd_requests(struct ceph_osd_client *osdc, | |
843 | struct ceph_osd *osd) | |
844 | { | |
a40c4f10 | 845 | struct ceph_osd_request *req, *nreq; |
e02493c0 | 846 | LIST_HEAD(resend); |
6f6c7006 SW |
847 | int err; |
848 | ||
849 | dout("__kick_osd_requests osd%d\n", osd->o_osd); | |
850 | err = __reset_osd(osdc, osd); | |
685a7555 | 851 | if (err) |
6f6c7006 | 852 | return; |
e02493c0 AE |
853 | /* |
854 | * Build up a list of requests to resend by traversing the | |
855 | * osd's list of requests. Requests for a given object are | |
856 | * sent in tid order, and that is also the order they're | |
857 | * kept on this list. Therefore all requests that are in | |
858 | * flight will be found first, followed by all requests that | |
859 | * have not yet been sent. And to resend requests while | |
860 | * preserving this order we will want to put any sent | |
861 | * requests back on the front of the osd client's unsent | |
862 | * list. | |
863 | * | |
864 | * So we build a separate ordered list of already-sent | |
865 | * requests for the affected osd and splice it onto the | |
866 | * front of the osd client's unsent list. Once we've seen a | |
867 | * request that has not yet been sent we're done. Those | |
868 | * requests are already sitting right where they belong. | |
869 | */ | |
6f6c7006 | 870 | list_for_each_entry(req, &osd->o_requests, r_osd_item) { |
e02493c0 AE |
871 | if (!req->r_sent) |
872 | break; | |
873 | list_move_tail(&req->r_req_lru_item, &resend); | |
874 | dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, | |
6f6c7006 | 875 | osd->o_osd); |
a40c4f10 YS |
876 | if (!req->r_linger) |
877 | req->r_flags |= CEPH_OSD_FLAG_RETRY; | |
878 | } | |
e02493c0 | 879 | list_splice(&resend, &osdc->req_unsent); |
a40c4f10 | 880 | |
e02493c0 AE |
881 | /* |
882 | * Linger requests are re-registered before sending, which | |
883 | * sets up a new tid for each. We add them to the unsent | |
884 | * list at the end to keep things in tid order. | |
885 | */ | |
a40c4f10 YS |
886 | list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, |
887 | r_linger_osd) { | |
77f38e0e SW |
888 | /* |
889 | * reregister request prior to unregistering linger so | |
890 | * that r_osd is preserved. | |
891 | */ | |
892 | BUG_ON(!list_empty(&req->r_req_lru_item)); | |
a40c4f10 | 893 | __register_request(osdc, req); |
e02493c0 | 894 | list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); |
ad885927 | 895 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); |
77f38e0e | 896 | __unregister_linger_request(osdc, req); |
a40c4f10 YS |
897 | dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, |
898 | osd->o_osd); | |
6f6c7006 SW |
899 | } |
900 | } | |
901 | ||
f24e9980 | 902 | /* |
81b024e7 | 903 | * If the osd connection drops, we need to resubmit all requests. |
f24e9980 SW |
904 | */ |
905 | static void osd_reset(struct ceph_connection *con) | |
906 | { | |
907 | struct ceph_osd *osd = con->private; | |
908 | struct ceph_osd_client *osdc; | |
909 | ||
910 | if (!osd) | |
911 | return; | |
912 | dout("osd_reset osd%d\n", osd->o_osd); | |
913 | osdc = osd->o_osdc; | |
f24e9980 | 914 | down_read(&osdc->map_sem); |
83aff95e SW |
915 | mutex_lock(&osdc->request_mutex); |
916 | __kick_osd_requests(osdc, osd); | |
f9d25199 | 917 | __send_queued(osdc); |
83aff95e | 918 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
919 | up_read(&osdc->map_sem); |
920 | } | |
921 | ||
922 | /* | |
923 | * Track open sessions with osds. | |
924 | */ | |
e10006f8 | 925 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
926 | { |
927 | struct ceph_osd *osd; | |
928 | ||
929 | osd = kzalloc(sizeof(*osd), GFP_NOFS); | |
930 | if (!osd) | |
931 | return NULL; | |
932 | ||
933 | atomic_set(&osd->o_ref, 1); | |
934 | osd->o_osdc = osdc; | |
e10006f8 | 935 | osd->o_osd = onum; |
f407731d | 936 | RB_CLEAR_NODE(&osd->o_node); |
f24e9980 | 937 | INIT_LIST_HEAD(&osd->o_requests); |
a40c4f10 | 938 | INIT_LIST_HEAD(&osd->o_linger_requests); |
f5a2041b | 939 | INIT_LIST_HEAD(&osd->o_osd_lru); |
f24e9980 SW |
940 | osd->o_incarnation = 1; |
941 | ||
b7a9e5dd | 942 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 943 | |
422d2cb8 | 944 | INIT_LIST_HEAD(&osd->o_keepalive_item); |
f24e9980 SW |
945 | return osd; |
946 | } | |
947 | ||
948 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
949 | { | |
950 | if (atomic_inc_not_zero(&osd->o_ref)) { | |
951 | dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, | |
952 | atomic_read(&osd->o_ref)); | |
953 | return osd; | |
954 | } else { | |
955 | dout("get_osd %p FAIL\n", osd); | |
956 | return NULL; | |
957 | } | |
958 | } | |
959 | ||
960 | static void put_osd(struct ceph_osd *osd) | |
961 | { | |
962 | dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), | |
963 | atomic_read(&osd->o_ref) - 1); | |
a255651d | 964 | if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { |
79494d1b SW |
965 | struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; |
966 | ||
27859f97 | 967 | ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); |
f24e9980 | 968 | kfree(osd); |
79494d1b | 969 | } |
f24e9980 SW |
970 | } |
971 | ||
972 | /* | |
973 | * remove an osd from our map | |
974 | */ | |
f5a2041b | 975 | static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 976 | { |
f5a2041b | 977 | dout("__remove_osd %p\n", osd); |
f24e9980 SW |
978 | BUG_ON(!list_empty(&osd->o_requests)); |
979 | rb_erase(&osd->o_node, &osdc->osds); | |
f5a2041b | 980 | list_del_init(&osd->o_osd_lru); |
f24e9980 SW |
981 | ceph_con_close(&osd->o_con); |
982 | put_osd(osd); | |
983 | } | |
984 | ||
aca420bc SW |
985 | static void remove_all_osds(struct ceph_osd_client *osdc) |
986 | { | |
048a9d2d | 987 | dout("%s %p\n", __func__, osdc); |
aca420bc SW |
988 | mutex_lock(&osdc->request_mutex); |
989 | while (!RB_EMPTY_ROOT(&osdc->osds)) { | |
990 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
991 | struct ceph_osd, o_node); | |
992 | __remove_osd(osdc, osd); | |
993 | } | |
994 | mutex_unlock(&osdc->request_mutex); | |
995 | } | |
996 | ||
f5a2041b YS |
997 | static void __move_osd_to_lru(struct ceph_osd_client *osdc, |
998 | struct ceph_osd *osd) | |
999 | { | |
1000 | dout("__move_osd_to_lru %p\n", osd); | |
1001 | BUG_ON(!list_empty(&osd->o_osd_lru)); | |
1002 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); | |
3d14c5d2 | 1003 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; |
f5a2041b YS |
1004 | } |
1005 | ||
1006 | static void __remove_osd_from_lru(struct ceph_osd *osd) | |
1007 | { | |
1008 | dout("__remove_osd_from_lru %p\n", osd); | |
1009 | if (!list_empty(&osd->o_osd_lru)) | |
1010 | list_del_init(&osd->o_osd_lru); | |
1011 | } | |
1012 | ||
aca420bc | 1013 | static void remove_old_osds(struct ceph_osd_client *osdc) |
f5a2041b YS |
1014 | { |
1015 | struct ceph_osd *osd, *nosd; | |
1016 | ||
1017 | dout("__remove_old_osds %p\n", osdc); | |
1018 | mutex_lock(&osdc->request_mutex); | |
1019 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { | |
aca420bc | 1020 | if (time_before(jiffies, osd->lru_ttl)) |
f5a2041b YS |
1021 | break; |
1022 | __remove_osd(osdc, osd); | |
1023 | } | |
1024 | mutex_unlock(&osdc->request_mutex); | |
1025 | } | |
1026 | ||
f24e9980 SW |
1027 | /* |
1028 | * reset osd connect | |
1029 | */ | |
f5a2041b | 1030 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 1031 | { |
c3acb181 | 1032 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 1033 | |
f5a2041b | 1034 | dout("__reset_osd %p osd%d\n", osd, osd->o_osd); |
a40c4f10 YS |
1035 | if (list_empty(&osd->o_requests) && |
1036 | list_empty(&osd->o_linger_requests)) { | |
f5a2041b | 1037 | __remove_osd(osdc, osd); |
c3acb181 AE |
1038 | |
1039 | return -ENODEV; | |
1040 | } | |
1041 | ||
1042 | peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; | |
1043 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && | |
1044 | !ceph_con_opened(&osd->o_con)) { | |
1045 | struct ceph_osd_request *req; | |
1046 | ||
87b315a5 SW |
1047 | dout(" osd addr hasn't changed and connection never opened," |
1048 | " letting msgr retry"); | |
1049 | /* touch each r_stamp for handle_timeout()'s benfit */ | |
1050 | list_for_each_entry(req, &osd->o_requests, r_osd_item) | |
1051 | req->r_stamp = jiffies; | |
c3acb181 AE |
1052 | |
1053 | return -EAGAIN; | |
f24e9980 | 1054 | } |
c3acb181 AE |
1055 | |
1056 | ceph_con_close(&osd->o_con); | |
1057 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
1058 | osd->o_incarnation++; | |
1059 | ||
1060 | return 0; | |
f24e9980 SW |
1061 | } |
1062 | ||
1063 | static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) | |
1064 | { | |
1065 | struct rb_node **p = &osdc->osds.rb_node; | |
1066 | struct rb_node *parent = NULL; | |
1067 | struct ceph_osd *osd = NULL; | |
1068 | ||
aca420bc | 1069 | dout("__insert_osd %p osd%d\n", new, new->o_osd); |
f24e9980 SW |
1070 | while (*p) { |
1071 | parent = *p; | |
1072 | osd = rb_entry(parent, struct ceph_osd, o_node); | |
1073 | if (new->o_osd < osd->o_osd) | |
1074 | p = &(*p)->rb_left; | |
1075 | else if (new->o_osd > osd->o_osd) | |
1076 | p = &(*p)->rb_right; | |
1077 | else | |
1078 | BUG(); | |
1079 | } | |
1080 | ||
1081 | rb_link_node(&new->o_node, parent, p); | |
1082 | rb_insert_color(&new->o_node, &osdc->osds); | |
1083 | } | |
1084 | ||
1085 | static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) | |
1086 | { | |
1087 | struct ceph_osd *osd; | |
1088 | struct rb_node *n = osdc->osds.rb_node; | |
1089 | ||
1090 | while (n) { | |
1091 | osd = rb_entry(n, struct ceph_osd, o_node); | |
1092 | if (o < osd->o_osd) | |
1093 | n = n->rb_left; | |
1094 | else if (o > osd->o_osd) | |
1095 | n = n->rb_right; | |
1096 | else | |
1097 | return osd; | |
1098 | } | |
1099 | return NULL; | |
1100 | } | |
1101 | ||
422d2cb8 YS |
1102 | static void __schedule_osd_timeout(struct ceph_osd_client *osdc) |
1103 | { | |
1104 | schedule_delayed_work(&osdc->timeout_work, | |
3d14c5d2 | 1105 | osdc->client->options->osd_keepalive_timeout * HZ); |
422d2cb8 YS |
1106 | } |
1107 | ||
1108 | static void __cancel_osd_timeout(struct ceph_osd_client *osdc) | |
1109 | { | |
1110 | cancel_delayed_work(&osdc->timeout_work); | |
1111 | } | |
f24e9980 SW |
1112 | |
1113 | /* | |
1114 | * Register request, assign tid. If this is the first request, set up | |
1115 | * the timeout event. | |
1116 | */ | |
a40c4f10 YS |
1117 | static void __register_request(struct ceph_osd_client *osdc, |
1118 | struct ceph_osd_request *req) | |
f24e9980 | 1119 | { |
f24e9980 | 1120 | req->r_tid = ++osdc->last_tid; |
6df058c0 | 1121 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); |
77f38e0e | 1122 | dout("__register_request %p tid %lld\n", req, req->r_tid); |
f24e9980 SW |
1123 | __insert_request(osdc, req); |
1124 | ceph_osdc_get_request(req); | |
1125 | osdc->num_requests++; | |
f24e9980 | 1126 | if (osdc->num_requests == 1) { |
422d2cb8 YS |
1127 | dout(" first request, scheduling timeout\n"); |
1128 | __schedule_osd_timeout(osdc); | |
f24e9980 | 1129 | } |
a40c4f10 YS |
1130 | } |
1131 | ||
f24e9980 SW |
1132 | /* |
1133 | * called under osdc->request_mutex | |
1134 | */ | |
1135 | static void __unregister_request(struct ceph_osd_client *osdc, | |
1136 | struct ceph_osd_request *req) | |
1137 | { | |
35f9f8a0 SW |
1138 | if (RB_EMPTY_NODE(&req->r_node)) { |
1139 | dout("__unregister_request %p tid %lld not registered\n", | |
1140 | req, req->r_tid); | |
1141 | return; | |
1142 | } | |
1143 | ||
f24e9980 SW |
1144 | dout("__unregister_request %p tid %lld\n", req, req->r_tid); |
1145 | rb_erase(&req->r_node, &osdc->requests); | |
1146 | osdc->num_requests--; | |
1147 | ||
0ba6478d SW |
1148 | if (req->r_osd) { |
1149 | /* make sure the original request isn't in flight. */ | |
6740a845 | 1150 | ceph_msg_revoke(req->r_request); |
0ba6478d SW |
1151 | |
1152 | list_del_init(&req->r_osd_item); | |
a40c4f10 YS |
1153 | if (list_empty(&req->r_osd->o_requests) && |
1154 | list_empty(&req->r_osd->o_linger_requests)) { | |
1155 | dout("moving osd to %p lru\n", req->r_osd); | |
f5a2041b | 1156 | __move_osd_to_lru(osdc, req->r_osd); |
a40c4f10 | 1157 | } |
fbdb9190 | 1158 | if (list_empty(&req->r_linger_item)) |
a40c4f10 | 1159 | req->r_osd = NULL; |
0ba6478d | 1160 | } |
f24e9980 | 1161 | |
7d5f2481 | 1162 | list_del_init(&req->r_req_lru_item); |
f24e9980 SW |
1163 | ceph_osdc_put_request(req); |
1164 | ||
422d2cb8 YS |
1165 | if (osdc->num_requests == 0) { |
1166 | dout(" no requests, canceling timeout\n"); | |
1167 | __cancel_osd_timeout(osdc); | |
f24e9980 SW |
1168 | } |
1169 | } | |
1170 | ||
1171 | /* | |
1172 | * Cancel a previously queued request message | |
1173 | */ | |
1174 | static void __cancel_request(struct ceph_osd_request *req) | |
1175 | { | |
6bc18876 | 1176 | if (req->r_sent && req->r_osd) { |
6740a845 | 1177 | ceph_msg_revoke(req->r_request); |
f24e9980 SW |
1178 | req->r_sent = 0; |
1179 | } | |
1180 | } | |
1181 | ||
a40c4f10 YS |
1182 | static void __register_linger_request(struct ceph_osd_client *osdc, |
1183 | struct ceph_osd_request *req) | |
1184 | { | |
1185 | dout("__register_linger_request %p\n", req); | |
96e4dac6 | 1186 | ceph_osdc_get_request(req); |
a40c4f10 | 1187 | list_add_tail(&req->r_linger_item, &osdc->req_linger); |
6194ea89 SW |
1188 | if (req->r_osd) |
1189 | list_add_tail(&req->r_linger_osd, | |
1190 | &req->r_osd->o_linger_requests); | |
a40c4f10 YS |
1191 | } |
1192 | ||
1193 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
1194 | struct ceph_osd_request *req) | |
1195 | { | |
1196 | dout("__unregister_linger_request %p\n", req); | |
61c74035 | 1197 | list_del_init(&req->r_linger_item); |
a40c4f10 | 1198 | if (req->r_osd) { |
a40c4f10 YS |
1199 | list_del_init(&req->r_linger_osd); |
1200 | ||
1201 | if (list_empty(&req->r_osd->o_requests) && | |
1202 | list_empty(&req->r_osd->o_linger_requests)) { | |
1203 | dout("moving osd to %p lru\n", req->r_osd); | |
1204 | __move_osd_to_lru(osdc, req->r_osd); | |
1205 | } | |
fbdb9190 SW |
1206 | if (list_empty(&req->r_osd_item)) |
1207 | req->r_osd = NULL; | |
a40c4f10 | 1208 | } |
96e4dac6 | 1209 | ceph_osdc_put_request(req); |
a40c4f10 YS |
1210 | } |
1211 | ||
1212 | void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, | |
1213 | struct ceph_osd_request *req) | |
1214 | { | |
1215 | mutex_lock(&osdc->request_mutex); | |
1216 | if (req->r_linger) { | |
c10ebbf5 | 1217 | req->r_linger = 0; |
96e4dac6 | 1218 | __unregister_linger_request(osdc, req); |
a40c4f10 YS |
1219 | } |
1220 | mutex_unlock(&osdc->request_mutex); | |
1221 | } | |
1222 | EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); | |
1223 | ||
1224 | void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, | |
1225 | struct ceph_osd_request *req) | |
1226 | { | |
1227 | if (!req->r_linger) { | |
1228 | dout("set_request_linger %p\n", req); | |
1229 | req->r_linger = 1; | |
a40c4f10 YS |
1230 | } |
1231 | } | |
1232 | EXPORT_SYMBOL(ceph_osdc_set_request_linger); | |
1233 | ||
f24e9980 SW |
1234 | /* |
1235 | * Pick an osd (the first 'up' osd in the pg), allocate the osd struct | |
1236 | * (as needed), and set the request r_osd appropriately. If there is | |
25985edc | 1237 | * no up osd, set r_osd to NULL. Move the request to the appropriate list |
6f6c7006 | 1238 | * (unsent, homeless) or leave on in-flight lru. |
f24e9980 SW |
1239 | * |
1240 | * Return 0 if unchanged, 1 if changed, or negative on error. | |
1241 | * | |
1242 | * Caller should hold map_sem for read and request_mutex. | |
1243 | */ | |
6f6c7006 | 1244 | static int __map_request(struct ceph_osd_client *osdc, |
38d6453c | 1245 | struct ceph_osd_request *req, int force_resend) |
f24e9980 | 1246 | { |
5b191d99 | 1247 | struct ceph_pg pgid; |
d85b7056 SW |
1248 | int acting[CEPH_PG_MAX_SIZE]; |
1249 | int o = -1, num = 0; | |
f24e9980 | 1250 | int err; |
f24e9980 | 1251 | |
6f6c7006 | 1252 | dout("map_request %p tid %lld\n", req, req->r_tid); |
41766f87 AE |
1253 | err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, |
1254 | ceph_file_layout_pg_pool(req->r_file_layout)); | |
6f6c7006 SW |
1255 | if (err) { |
1256 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f24e9980 | 1257 | return err; |
6f6c7006 | 1258 | } |
7740a42f SW |
1259 | req->r_pgid = pgid; |
1260 | ||
d85b7056 SW |
1261 | err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); |
1262 | if (err > 0) { | |
1263 | o = acting[0]; | |
1264 | num = err; | |
1265 | } | |
f24e9980 | 1266 | |
38d6453c SW |
1267 | if ((!force_resend && |
1268 | req->r_osd && req->r_osd->o_osd == o && | |
d85b7056 SW |
1269 | req->r_sent >= req->r_osd->o_incarnation && |
1270 | req->r_num_pg_osds == num && | |
1271 | memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || | |
f24e9980 SW |
1272 | (req->r_osd == NULL && o == -1)) |
1273 | return 0; /* no change */ | |
1274 | ||
5b191d99 SW |
1275 | dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", |
1276 | req->r_tid, pgid.pool, pgid.seed, o, | |
f24e9980 SW |
1277 | req->r_osd ? req->r_osd->o_osd : -1); |
1278 | ||
d85b7056 SW |
1279 | /* record full pg acting set */ |
1280 | memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); | |
1281 | req->r_num_pg_osds = num; | |
1282 | ||
f24e9980 SW |
1283 | if (req->r_osd) { |
1284 | __cancel_request(req); | |
1285 | list_del_init(&req->r_osd_item); | |
f24e9980 SW |
1286 | req->r_osd = NULL; |
1287 | } | |
1288 | ||
1289 | req->r_osd = __lookup_osd(osdc, o); | |
1290 | if (!req->r_osd && o >= 0) { | |
c99eb1c7 | 1291 | err = -ENOMEM; |
e10006f8 | 1292 | req->r_osd = create_osd(osdc, o); |
6f6c7006 SW |
1293 | if (!req->r_osd) { |
1294 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
c99eb1c7 | 1295 | goto out; |
6f6c7006 | 1296 | } |
f24e9980 | 1297 | |
6f6c7006 | 1298 | dout("map_request osd %p is osd%d\n", req->r_osd, o); |
f24e9980 SW |
1299 | __insert_osd(osdc, req->r_osd); |
1300 | ||
b7a9e5dd SW |
1301 | ceph_con_open(&req->r_osd->o_con, |
1302 | CEPH_ENTITY_TYPE_OSD, o, | |
1303 | &osdc->osdmap->osd_addr[o]); | |
f24e9980 SW |
1304 | } |
1305 | ||
f5a2041b YS |
1306 | if (req->r_osd) { |
1307 | __remove_osd_from_lru(req->r_osd); | |
ad885927 AE |
1308 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); |
1309 | list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); | |
6f6c7006 | 1310 | } else { |
ad885927 | 1311 | list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); |
f5a2041b | 1312 | } |
d85b7056 | 1313 | err = 1; /* osd or pg changed */ |
f24e9980 SW |
1314 | |
1315 | out: | |
f24e9980 SW |
1316 | return err; |
1317 | } | |
1318 | ||
1319 | /* | |
1320 | * caller should hold map_sem (for read) and request_mutex | |
1321 | */ | |
56e925b6 SW |
1322 | static void __send_request(struct ceph_osd_client *osdc, |
1323 | struct ceph_osd_request *req) | |
f24e9980 | 1324 | { |
1b83bef2 | 1325 | void *p; |
f24e9980 | 1326 | |
1b83bef2 SW |
1327 | dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", |
1328 | req, req->r_tid, req->r_osd->o_osd, req->r_flags, | |
1329 | (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); | |
1330 | ||
1331 | /* fill in message content that changes each time we send it */ | |
1332 | put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); | |
1333 | put_unaligned_le32(req->r_flags, req->r_request_flags); | |
1334 | put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); | |
1335 | p = req->r_request_pgid; | |
1336 | ceph_encode_64(&p, req->r_pgid.pool); | |
1337 | ceph_encode_32(&p, req->r_pgid.seed); | |
1338 | put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ | |
1339 | memcpy(req->r_request_reassert_version, &req->r_reassert_version, | |
1340 | sizeof(req->r_reassert_version)); | |
2169aea6 | 1341 | |
3dd72fc0 | 1342 | req->r_stamp = jiffies; |
07a27e22 | 1343 | list_move_tail(&req->r_req_lru_item, &osdc->req_lru); |
f24e9980 SW |
1344 | |
1345 | ceph_msg_get(req->r_request); /* send consumes a ref */ | |
26be8808 | 1346 | |
f24e9980 | 1347 | req->r_sent = req->r_osd->o_incarnation; |
26be8808 AE |
1348 | |
1349 | ceph_con_send(&req->r_osd->o_con, req->r_request); | |
f24e9980 SW |
1350 | } |
1351 | ||
6f6c7006 SW |
1352 | /* |
1353 | * Send any requests in the queue (req_unsent). | |
1354 | */ | |
f9d25199 | 1355 | static void __send_queued(struct ceph_osd_client *osdc) |
6f6c7006 SW |
1356 | { |
1357 | struct ceph_osd_request *req, *tmp; | |
1358 | ||
f9d25199 AE |
1359 | dout("__send_queued\n"); |
1360 | list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) | |
6f6c7006 | 1361 | __send_request(osdc, req); |
6f6c7006 SW |
1362 | } |
1363 | ||
f24e9980 SW |
1364 | /* |
1365 | * Timeout callback, called every N seconds when 1 or more osd | |
1366 | * requests has been active for more than N seconds. When this | |
1367 | * happens, we ping all OSDs with requests who have timed out to | |
1368 | * ensure any communications channel reset is detected. Reset the | |
1369 | * request timeouts another N seconds in the future as we go. | |
1370 | * Reschedule the timeout event another N seconds in future (unless | |
1371 | * there are no open requests). | |
1372 | */ | |
1373 | static void handle_timeout(struct work_struct *work) | |
1374 | { | |
1375 | struct ceph_osd_client *osdc = | |
1376 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
83aff95e | 1377 | struct ceph_osd_request *req; |
f24e9980 | 1378 | struct ceph_osd *osd; |
422d2cb8 | 1379 | unsigned long keepalive = |
3d14c5d2 | 1380 | osdc->client->options->osd_keepalive_timeout * HZ; |
422d2cb8 | 1381 | struct list_head slow_osds; |
f24e9980 SW |
1382 | dout("timeout\n"); |
1383 | down_read(&osdc->map_sem); | |
1384 | ||
1385 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1386 | ||
1387 | mutex_lock(&osdc->request_mutex); | |
f24e9980 | 1388 | |
422d2cb8 YS |
1389 | /* |
1390 | * ping osds that are a bit slow. this ensures that if there | |
1391 | * is a break in the TCP connection we will notice, and reopen | |
1392 | * a connection with that osd (from the fault callback). | |
1393 | */ | |
1394 | INIT_LIST_HEAD(&slow_osds); | |
1395 | list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { | |
3dd72fc0 | 1396 | if (time_before(jiffies, req->r_stamp + keepalive)) |
422d2cb8 YS |
1397 | break; |
1398 | ||
1399 | osd = req->r_osd; | |
1400 | BUG_ON(!osd); | |
1401 | dout(" tid %llu is slow, will send keepalive on osd%d\n", | |
f24e9980 | 1402 | req->r_tid, osd->o_osd); |
422d2cb8 YS |
1403 | list_move_tail(&osd->o_keepalive_item, &slow_osds); |
1404 | } | |
1405 | while (!list_empty(&slow_osds)) { | |
1406 | osd = list_entry(slow_osds.next, struct ceph_osd, | |
1407 | o_keepalive_item); | |
1408 | list_del_init(&osd->o_keepalive_item); | |
f24e9980 SW |
1409 | ceph_con_keepalive(&osd->o_con); |
1410 | } | |
1411 | ||
422d2cb8 | 1412 | __schedule_osd_timeout(osdc); |
f9d25199 | 1413 | __send_queued(osdc); |
f24e9980 | 1414 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1415 | up_read(&osdc->map_sem); |
1416 | } | |
1417 | ||
f5a2041b YS |
1418 | static void handle_osds_timeout(struct work_struct *work) |
1419 | { | |
1420 | struct ceph_osd_client *osdc = | |
1421 | container_of(work, struct ceph_osd_client, | |
1422 | osds_timeout_work.work); | |
1423 | unsigned long delay = | |
3d14c5d2 | 1424 | osdc->client->options->osd_idle_ttl * HZ >> 2; |
f5a2041b YS |
1425 | |
1426 | dout("osds timeout\n"); | |
1427 | down_read(&osdc->map_sem); | |
aca420bc | 1428 | remove_old_osds(osdc); |
f5a2041b YS |
1429 | up_read(&osdc->map_sem); |
1430 | ||
1431 | schedule_delayed_work(&osdc->osds_timeout_work, | |
1432 | round_jiffies_relative(delay)); | |
1433 | } | |
1434 | ||
25845472 SW |
1435 | static void complete_request(struct ceph_osd_request *req) |
1436 | { | |
25845472 SW |
1437 | complete_all(&req->r_safe_completion); /* fsync waiter */ |
1438 | } | |
1439 | ||
f24e9980 SW |
1440 | /* |
1441 | * handle osd op reply. either call the callback if it is specified, | |
1442 | * or do the completion to wake up the waiting thread. | |
1443 | */ | |
350b1c32 SW |
1444 | static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, |
1445 | struct ceph_connection *con) | |
f24e9980 | 1446 | { |
1b83bef2 | 1447 | void *p, *end; |
f24e9980 SW |
1448 | struct ceph_osd_request *req; |
1449 | u64 tid; | |
1b83bef2 | 1450 | int object_len; |
79528734 AE |
1451 | unsigned int numops; |
1452 | int payload_len, flags; | |
0ceed5db | 1453 | s32 result; |
1b83bef2 SW |
1454 | s32 retry_attempt; |
1455 | struct ceph_pg pg; | |
1456 | int err; | |
1457 | u32 reassert_epoch; | |
1458 | u64 reassert_version; | |
1459 | u32 osdmap_epoch; | |
0d5af164 | 1460 | int already_completed; |
9fc6e064 | 1461 | u32 bytes; |
79528734 | 1462 | unsigned int i; |
f24e9980 | 1463 | |
6df058c0 | 1464 | tid = le64_to_cpu(msg->hdr.tid); |
1b83bef2 SW |
1465 | dout("handle_reply %p tid %llu\n", msg, tid); |
1466 | ||
1467 | p = msg->front.iov_base; | |
1468 | end = p + msg->front.iov_len; | |
1469 | ||
1470 | ceph_decode_need(&p, end, 4, bad); | |
1471 | object_len = ceph_decode_32(&p); | |
1472 | ceph_decode_need(&p, end, object_len, bad); | |
1473 | p += object_len; | |
1474 | ||
ef4859d6 | 1475 | err = ceph_decode_pgid(&p, end, &pg); |
1b83bef2 | 1476 | if (err) |
f24e9980 | 1477 | goto bad; |
1b83bef2 SW |
1478 | |
1479 | ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); | |
1480 | flags = ceph_decode_64(&p); | |
1481 | result = ceph_decode_32(&p); | |
1482 | reassert_epoch = ceph_decode_32(&p); | |
1483 | reassert_version = ceph_decode_64(&p); | |
1484 | osdmap_epoch = ceph_decode_32(&p); | |
1485 | ||
f24e9980 SW |
1486 | /* lookup */ |
1487 | mutex_lock(&osdc->request_mutex); | |
1488 | req = __lookup_request(osdc, tid); | |
1489 | if (req == NULL) { | |
1490 | dout("handle_reply tid %llu dne\n", tid); | |
8058fd45 | 1491 | goto bad_mutex; |
f24e9980 SW |
1492 | } |
1493 | ceph_osdc_get_request(req); | |
1b83bef2 SW |
1494 | |
1495 | dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, | |
1496 | req, result); | |
1497 | ||
18741196 | 1498 | ceph_decode_need(&p, end, 4, bad_put); |
1b83bef2 SW |
1499 | numops = ceph_decode_32(&p); |
1500 | if (numops > CEPH_OSD_MAX_OP) | |
1501 | goto bad_put; | |
1502 | if (numops != req->r_num_ops) | |
1503 | goto bad_put; | |
1504 | payload_len = 0; | |
18741196 | 1505 | ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); |
1b83bef2 SW |
1506 | for (i = 0; i < numops; i++) { |
1507 | struct ceph_osd_op *op = p; | |
1508 | int len; | |
1509 | ||
1510 | len = le32_to_cpu(op->payload_len); | |
1511 | req->r_reply_op_len[i] = len; | |
1512 | dout(" op %d has %d bytes\n", i, len); | |
1513 | payload_len += len; | |
1514 | p += sizeof(*op); | |
1515 | } | |
9fc6e064 AE |
1516 | bytes = le32_to_cpu(msg->hdr.data_len); |
1517 | if (payload_len != bytes) { | |
1b83bef2 | 1518 | pr_warning("sum of op payload lens %d != data_len %d", |
9fc6e064 | 1519 | payload_len, bytes); |
1b83bef2 SW |
1520 | goto bad_put; |
1521 | } | |
1522 | ||
18741196 | 1523 | ceph_decode_need(&p, end, 4 + numops * 4, bad_put); |
1b83bef2 SW |
1524 | retry_attempt = ceph_decode_32(&p); |
1525 | for (i = 0; i < numops; i++) | |
1526 | req->r_reply_op_result[i] = ceph_decode_32(&p); | |
f24e9980 | 1527 | |
eb845ff1 YZ |
1528 | already_completed = req->r_got_reply; |
1529 | ||
f24e9980 | 1530 | if (!req->r_got_reply) { |
f24e9980 | 1531 | |
1b83bef2 | 1532 | req->r_result = result; |
f24e9980 SW |
1533 | dout("handle_reply result %d bytes %d\n", req->r_result, |
1534 | bytes); | |
1535 | if (req->r_result == 0) | |
1536 | req->r_result = bytes; | |
1537 | ||
1538 | /* in case this is a write and we need to replay, */ | |
1b83bef2 SW |
1539 | req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); |
1540 | req->r_reassert_version.version = cpu_to_le64(reassert_version); | |
f24e9980 SW |
1541 | |
1542 | req->r_got_reply = 1; | |
1543 | } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { | |
1544 | dout("handle_reply tid %llu dup ack\n", tid); | |
34b43a56 | 1545 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1546 | goto done; |
1547 | } | |
1548 | ||
1549 | dout("handle_reply tid %llu flags %d\n", tid, flags); | |
1550 | ||
a40c4f10 YS |
1551 | if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) |
1552 | __register_linger_request(osdc, req); | |
1553 | ||
f24e9980 | 1554 | /* either this is a read, or we got the safe response */ |
0ceed5db SW |
1555 | if (result < 0 || |
1556 | (flags & CEPH_OSD_FLAG_ONDISK) || | |
f24e9980 SW |
1557 | ((flags & CEPH_OSD_FLAG_WRITE) == 0)) |
1558 | __unregister_request(osdc, req); | |
1559 | ||
1560 | mutex_unlock(&osdc->request_mutex); | |
1561 | ||
eb845ff1 | 1562 | if (!already_completed) { |
61c5d6bf YZ |
1563 | if (req->r_unsafe_callback && |
1564 | result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) | |
1565 | req->r_unsafe_callback(req, true); | |
eb845ff1 YZ |
1566 | if (req->r_callback) |
1567 | req->r_callback(req, msg); | |
1568 | else | |
1569 | complete_all(&req->r_completion); | |
1570 | } | |
f24e9980 | 1571 | |
61c5d6bf YZ |
1572 | if (flags & CEPH_OSD_FLAG_ONDISK) { |
1573 | if (req->r_unsafe_callback && already_completed) | |
1574 | req->r_unsafe_callback(req, false); | |
25845472 | 1575 | complete_request(req); |
61c5d6bf | 1576 | } |
f24e9980 SW |
1577 | |
1578 | done: | |
a40c4f10 | 1579 | dout("req=%p req->r_linger=%d\n", req, req->r_linger); |
f24e9980 SW |
1580 | ceph_osdc_put_request(req); |
1581 | return; | |
1582 | ||
1b83bef2 SW |
1583 | bad_put: |
1584 | ceph_osdc_put_request(req); | |
8058fd45 AE |
1585 | bad_mutex: |
1586 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 1587 | bad: |
1b83bef2 SW |
1588 | pr_err("corrupt osd_op_reply got %d %d\n", |
1589 | (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); | |
9ec7cab1 | 1590 | ceph_msg_dump(msg); |
f24e9980 SW |
1591 | } |
1592 | ||
6f6c7006 | 1593 | static void reset_changed_osds(struct ceph_osd_client *osdc) |
f24e9980 | 1594 | { |
f24e9980 | 1595 | struct rb_node *p, *n; |
f24e9980 | 1596 | |
6f6c7006 SW |
1597 | for (p = rb_first(&osdc->osds); p; p = n) { |
1598 | struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); | |
f24e9980 | 1599 | |
6f6c7006 SW |
1600 | n = rb_next(p); |
1601 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
1602 | memcmp(&osd->o_con.peer_addr, | |
1603 | ceph_osd_addr(osdc->osdmap, | |
1604 | osd->o_osd), | |
1605 | sizeof(struct ceph_entity_addr)) != 0) | |
1606 | __reset_osd(osdc, osd); | |
f24e9980 | 1607 | } |
422d2cb8 YS |
1608 | } |
1609 | ||
1610 | /* | |
6f6c7006 SW |
1611 | * Requeue requests whose mapping to an OSD has changed. If requests map to |
1612 | * no osd, request a new map. | |
422d2cb8 | 1613 | * |
e6d50f67 | 1614 | * Caller should hold map_sem for read. |
422d2cb8 | 1615 | */ |
38d6453c | 1616 | static void kick_requests(struct ceph_osd_client *osdc, int force_resend) |
422d2cb8 | 1617 | { |
a40c4f10 | 1618 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
1619 | struct rb_node *p; |
1620 | int needmap = 0; | |
1621 | int err; | |
422d2cb8 | 1622 | |
38d6453c | 1623 | dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); |
422d2cb8 | 1624 | mutex_lock(&osdc->request_mutex); |
6194ea89 | 1625 | for (p = rb_first(&osdc->requests); p; ) { |
6f6c7006 | 1626 | req = rb_entry(p, struct ceph_osd_request, r_node); |
6194ea89 | 1627 | p = rb_next(p); |
ab60b16d AE |
1628 | |
1629 | /* | |
1630 | * For linger requests that have not yet been | |
1631 | * registered, move them to the linger list; they'll | |
1632 | * be sent to the osd in the loop below. Unregister | |
1633 | * the request before re-registering it as a linger | |
1634 | * request to ensure the __map_request() below | |
1635 | * will decide it needs to be sent. | |
1636 | */ | |
1637 | if (req->r_linger && list_empty(&req->r_linger_item)) { | |
1638 | dout("%p tid %llu restart on osd%d\n", | |
1639 | req, req->r_tid, | |
1640 | req->r_osd ? req->r_osd->o_osd : -1); | |
96e4dac6 | 1641 | ceph_osdc_get_request(req); |
ab60b16d AE |
1642 | __unregister_request(osdc, req); |
1643 | __register_linger_request(osdc, req); | |
96e4dac6 | 1644 | ceph_osdc_put_request(req); |
ab60b16d AE |
1645 | continue; |
1646 | } | |
1647 | ||
38d6453c | 1648 | err = __map_request(osdc, req, force_resend); |
6f6c7006 SW |
1649 | if (err < 0) |
1650 | continue; /* error */ | |
1651 | if (req->r_osd == NULL) { | |
1652 | dout("%p tid %llu maps to no osd\n", req, req->r_tid); | |
1653 | needmap++; /* request a newer map */ | |
1654 | } else if (err > 0) { | |
6194ea89 SW |
1655 | if (!req->r_linger) { |
1656 | dout("%p tid %llu requeued on osd%d\n", req, | |
1657 | req->r_tid, | |
1658 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1659 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
6194ea89 SW |
1660 | } |
1661 | } | |
a40c4f10 YS |
1662 | } |
1663 | ||
1664 | list_for_each_entry_safe(req, nreq, &osdc->req_linger, | |
1665 | r_linger_item) { | |
1666 | dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); | |
1667 | ||
38d6453c | 1668 | err = __map_request(osdc, req, force_resend); |
ab60b16d | 1669 | dout("__map_request returned %d\n", err); |
a40c4f10 YS |
1670 | if (err == 0) |
1671 | continue; /* no change and no osd was specified */ | |
1672 | if (err < 0) | |
1673 | continue; /* hrm! */ | |
1674 | if (req->r_osd == NULL) { | |
1675 | dout("tid %llu maps to no valid osd\n", req->r_tid); | |
1676 | needmap++; /* request a newer map */ | |
1677 | continue; | |
6f6c7006 | 1678 | } |
a40c4f10 YS |
1679 | |
1680 | dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, | |
1681 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1682 | __register_request(osdc, req); |
c89ce05e | 1683 | __unregister_linger_request(osdc, req); |
6f6c7006 | 1684 | } |
14d2f38d | 1685 | reset_changed_osds(osdc); |
f24e9980 SW |
1686 | mutex_unlock(&osdc->request_mutex); |
1687 | ||
1688 | if (needmap) { | |
1689 | dout("%d requests for down osds, need new map\n", needmap); | |
1690 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1691 | } | |
422d2cb8 | 1692 | } |
6f6c7006 SW |
1693 | |
1694 | ||
f24e9980 SW |
1695 | /* |
1696 | * Process updated osd map. | |
1697 | * | |
1698 | * The message contains any number of incremental and full maps, normally | |
1699 | * indicating some sort of topology change in the cluster. Kick requests | |
1700 | * off to different OSDs as needed. | |
1701 | */ | |
1702 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
1703 | { | |
1704 | void *p, *end, *next; | |
1705 | u32 nr_maps, maplen; | |
1706 | u32 epoch; | |
1707 | struct ceph_osdmap *newmap = NULL, *oldmap; | |
1708 | int err; | |
1709 | struct ceph_fsid fsid; | |
1710 | ||
1711 | dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); | |
1712 | p = msg->front.iov_base; | |
1713 | end = p + msg->front.iov_len; | |
1714 | ||
1715 | /* verify fsid */ | |
1716 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
1717 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d SW |
1718 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
1719 | return; | |
f24e9980 SW |
1720 | |
1721 | down_write(&osdc->map_sem); | |
1722 | ||
1723 | /* incremental maps */ | |
1724 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1725 | dout(" %d inc maps\n", nr_maps); | |
1726 | while (nr_maps > 0) { | |
1727 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1728 | epoch = ceph_decode_32(&p); |
1729 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1730 | ceph_decode_need(&p, end, maplen, bad); |
1731 | next = p + maplen; | |
1732 | if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { | |
1733 | dout("applying incremental map %u len %d\n", | |
1734 | epoch, maplen); | |
1735 | newmap = osdmap_apply_incremental(&p, next, | |
1736 | osdc->osdmap, | |
15d9882c | 1737 | &osdc->client->msgr); |
f24e9980 SW |
1738 | if (IS_ERR(newmap)) { |
1739 | err = PTR_ERR(newmap); | |
1740 | goto bad; | |
1741 | } | |
30dc6381 | 1742 | BUG_ON(!newmap); |
f24e9980 SW |
1743 | if (newmap != osdc->osdmap) { |
1744 | ceph_osdmap_destroy(osdc->osdmap); | |
1745 | osdc->osdmap = newmap; | |
1746 | } | |
38d6453c | 1747 | kick_requests(osdc, 0); |
f24e9980 SW |
1748 | } else { |
1749 | dout("ignoring incremental map %u len %d\n", | |
1750 | epoch, maplen); | |
1751 | } | |
1752 | p = next; | |
1753 | nr_maps--; | |
1754 | } | |
1755 | if (newmap) | |
1756 | goto done; | |
1757 | ||
1758 | /* full maps */ | |
1759 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1760 | dout(" %d full maps\n", nr_maps); | |
1761 | while (nr_maps) { | |
1762 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1763 | epoch = ceph_decode_32(&p); |
1764 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1765 | ceph_decode_need(&p, end, maplen, bad); |
1766 | if (nr_maps > 1) { | |
1767 | dout("skipping non-latest full map %u len %d\n", | |
1768 | epoch, maplen); | |
1769 | } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { | |
1770 | dout("skipping full map %u len %d, " | |
1771 | "older than our %u\n", epoch, maplen, | |
1772 | osdc->osdmap->epoch); | |
1773 | } else { | |
38d6453c SW |
1774 | int skipped_map = 0; |
1775 | ||
f24e9980 SW |
1776 | dout("taking full map %u len %d\n", epoch, maplen); |
1777 | newmap = osdmap_decode(&p, p+maplen); | |
1778 | if (IS_ERR(newmap)) { | |
1779 | err = PTR_ERR(newmap); | |
1780 | goto bad; | |
1781 | } | |
30dc6381 | 1782 | BUG_ON(!newmap); |
f24e9980 SW |
1783 | oldmap = osdc->osdmap; |
1784 | osdc->osdmap = newmap; | |
38d6453c SW |
1785 | if (oldmap) { |
1786 | if (oldmap->epoch + 1 < newmap->epoch) | |
1787 | skipped_map = 1; | |
f24e9980 | 1788 | ceph_osdmap_destroy(oldmap); |
38d6453c SW |
1789 | } |
1790 | kick_requests(osdc, skipped_map); | |
f24e9980 SW |
1791 | } |
1792 | p += maplen; | |
1793 | nr_maps--; | |
1794 | } | |
1795 | ||
b72e19b9 DC |
1796 | if (!osdc->osdmap) |
1797 | goto bad; | |
f24e9980 SW |
1798 | done: |
1799 | downgrade_write(&osdc->map_sem); | |
1800 | ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); | |
cd634fb6 SW |
1801 | |
1802 | /* | |
1803 | * subscribe to subsequent osdmap updates if full to ensure | |
1804 | * we find out when we are no longer full and stop returning | |
1805 | * ENOSPC. | |
1806 | */ | |
1807 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) | |
1808 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1809 | ||
f9d25199 AE |
1810 | mutex_lock(&osdc->request_mutex); |
1811 | __send_queued(osdc); | |
1812 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 1813 | up_read(&osdc->map_sem); |
03066f23 | 1814 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
1815 | return; |
1816 | ||
1817 | bad: | |
1818 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 1819 | ceph_msg_dump(msg); |
f24e9980 SW |
1820 | up_write(&osdc->map_sem); |
1821 | return; | |
1822 | } | |
1823 | ||
a40c4f10 YS |
1824 | /* |
1825 | * watch/notify callback event infrastructure | |
1826 | * | |
1827 | * These callbacks are used both for watch and notify operations. | |
1828 | */ | |
1829 | static void __release_event(struct kref *kref) | |
1830 | { | |
1831 | struct ceph_osd_event *event = | |
1832 | container_of(kref, struct ceph_osd_event, kref); | |
1833 | ||
1834 | dout("__release_event %p\n", event); | |
1835 | kfree(event); | |
1836 | } | |
1837 | ||
1838 | static void get_event(struct ceph_osd_event *event) | |
1839 | { | |
1840 | kref_get(&event->kref); | |
1841 | } | |
1842 | ||
1843 | void ceph_osdc_put_event(struct ceph_osd_event *event) | |
1844 | { | |
1845 | kref_put(&event->kref, __release_event); | |
1846 | } | |
1847 | EXPORT_SYMBOL(ceph_osdc_put_event); | |
1848 | ||
1849 | static void __insert_event(struct ceph_osd_client *osdc, | |
1850 | struct ceph_osd_event *new) | |
1851 | { | |
1852 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1853 | struct rb_node *parent = NULL; | |
1854 | struct ceph_osd_event *event = NULL; | |
1855 | ||
1856 | while (*p) { | |
1857 | parent = *p; | |
1858 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1859 | if (new->cookie < event->cookie) | |
1860 | p = &(*p)->rb_left; | |
1861 | else if (new->cookie > event->cookie) | |
1862 | p = &(*p)->rb_right; | |
1863 | else | |
1864 | BUG(); | |
1865 | } | |
1866 | ||
1867 | rb_link_node(&new->node, parent, p); | |
1868 | rb_insert_color(&new->node, &osdc->event_tree); | |
1869 | } | |
1870 | ||
1871 | static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, | |
1872 | u64 cookie) | |
1873 | { | |
1874 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1875 | struct rb_node *parent = NULL; | |
1876 | struct ceph_osd_event *event = NULL; | |
1877 | ||
1878 | while (*p) { | |
1879 | parent = *p; | |
1880 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1881 | if (cookie < event->cookie) | |
1882 | p = &(*p)->rb_left; | |
1883 | else if (cookie > event->cookie) | |
1884 | p = &(*p)->rb_right; | |
1885 | else | |
1886 | return event; | |
1887 | } | |
1888 | return NULL; | |
1889 | } | |
1890 | ||
1891 | static void __remove_event(struct ceph_osd_event *event) | |
1892 | { | |
1893 | struct ceph_osd_client *osdc = event->osdc; | |
1894 | ||
1895 | if (!RB_EMPTY_NODE(&event->node)) { | |
1896 | dout("__remove_event removed %p\n", event); | |
1897 | rb_erase(&event->node, &osdc->event_tree); | |
1898 | ceph_osdc_put_event(event); | |
1899 | } else { | |
1900 | dout("__remove_event didn't remove %p\n", event); | |
1901 | } | |
1902 | } | |
1903 | ||
1904 | int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
1905 | void (*event_cb)(u64, u64, u8, void *), | |
3c663bbd | 1906 | void *data, struct ceph_osd_event **pevent) |
a40c4f10 YS |
1907 | { |
1908 | struct ceph_osd_event *event; | |
1909 | ||
1910 | event = kmalloc(sizeof(*event), GFP_NOIO); | |
1911 | if (!event) | |
1912 | return -ENOMEM; | |
1913 | ||
1914 | dout("create_event %p\n", event); | |
1915 | event->cb = event_cb; | |
3c663bbd | 1916 | event->one_shot = 0; |
a40c4f10 YS |
1917 | event->data = data; |
1918 | event->osdc = osdc; | |
1919 | INIT_LIST_HEAD(&event->osd_node); | |
3ee5234d | 1920 | RB_CLEAR_NODE(&event->node); |
a40c4f10 YS |
1921 | kref_init(&event->kref); /* one ref for us */ |
1922 | kref_get(&event->kref); /* one ref for the caller */ | |
a40c4f10 YS |
1923 | |
1924 | spin_lock(&osdc->event_lock); | |
1925 | event->cookie = ++osdc->event_count; | |
1926 | __insert_event(osdc, event); | |
1927 | spin_unlock(&osdc->event_lock); | |
1928 | ||
1929 | *pevent = event; | |
1930 | return 0; | |
1931 | } | |
1932 | EXPORT_SYMBOL(ceph_osdc_create_event); | |
1933 | ||
1934 | void ceph_osdc_cancel_event(struct ceph_osd_event *event) | |
1935 | { | |
1936 | struct ceph_osd_client *osdc = event->osdc; | |
1937 | ||
1938 | dout("cancel_event %p\n", event); | |
1939 | spin_lock(&osdc->event_lock); | |
1940 | __remove_event(event); | |
1941 | spin_unlock(&osdc->event_lock); | |
1942 | ceph_osdc_put_event(event); /* caller's */ | |
1943 | } | |
1944 | EXPORT_SYMBOL(ceph_osdc_cancel_event); | |
1945 | ||
1946 | ||
1947 | static void do_event_work(struct work_struct *work) | |
1948 | { | |
1949 | struct ceph_osd_event_work *event_work = | |
1950 | container_of(work, struct ceph_osd_event_work, work); | |
1951 | struct ceph_osd_event *event = event_work->event; | |
1952 | u64 ver = event_work->ver; | |
1953 | u64 notify_id = event_work->notify_id; | |
1954 | u8 opcode = event_work->opcode; | |
1955 | ||
1956 | dout("do_event_work completing %p\n", event); | |
1957 | event->cb(ver, notify_id, opcode, event->data); | |
a40c4f10 YS |
1958 | dout("do_event_work completed %p\n", event); |
1959 | ceph_osdc_put_event(event); | |
1960 | kfree(event_work); | |
1961 | } | |
1962 | ||
1963 | ||
1964 | /* | |
1965 | * Process osd watch notifications | |
1966 | */ | |
3c663bbd AE |
1967 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
1968 | struct ceph_msg *msg) | |
a40c4f10 YS |
1969 | { |
1970 | void *p, *end; | |
1971 | u8 proto_ver; | |
1972 | u64 cookie, ver, notify_id; | |
1973 | u8 opcode; | |
1974 | struct ceph_osd_event *event; | |
1975 | struct ceph_osd_event_work *event_work; | |
1976 | ||
1977 | p = msg->front.iov_base; | |
1978 | end = p + msg->front.iov_len; | |
1979 | ||
1980 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
1981 | ceph_decode_8_safe(&p, end, opcode, bad); | |
1982 | ceph_decode_64_safe(&p, end, cookie, bad); | |
1983 | ceph_decode_64_safe(&p, end, ver, bad); | |
1984 | ceph_decode_64_safe(&p, end, notify_id, bad); | |
1985 | ||
1986 | spin_lock(&osdc->event_lock); | |
1987 | event = __find_event(osdc, cookie); | |
1988 | if (event) { | |
3c663bbd | 1989 | BUG_ON(event->one_shot); |
a40c4f10 | 1990 | get_event(event); |
a40c4f10 YS |
1991 | } |
1992 | spin_unlock(&osdc->event_lock); | |
1993 | dout("handle_watch_notify cookie %lld ver %lld event %p\n", | |
1994 | cookie, ver, event); | |
1995 | if (event) { | |
1996 | event_work = kmalloc(sizeof(*event_work), GFP_NOIO); | |
a40c4f10 YS |
1997 | if (!event_work) { |
1998 | dout("ERROR: could not allocate event_work\n"); | |
1999 | goto done_err; | |
2000 | } | |
6b0ae409 | 2001 | INIT_WORK(&event_work->work, do_event_work); |
a40c4f10 YS |
2002 | event_work->event = event; |
2003 | event_work->ver = ver; | |
2004 | event_work->notify_id = notify_id; | |
2005 | event_work->opcode = opcode; | |
2006 | if (!queue_work(osdc->notify_wq, &event_work->work)) { | |
2007 | dout("WARNING: failed to queue notify event work\n"); | |
2008 | goto done_err; | |
2009 | } | |
2010 | } | |
2011 | ||
2012 | return; | |
2013 | ||
2014 | done_err: | |
a40c4f10 YS |
2015 | ceph_osdc_put_event(event); |
2016 | return; | |
2017 | ||
2018 | bad: | |
2019 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
2020 | return; | |
2021 | } | |
2022 | ||
e65550fd AE |
2023 | /* |
2024 | * build new request AND message | |
2025 | * | |
2026 | */ | |
2027 | void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, | |
2028 | struct ceph_snap_context *snapc, u64 snap_id, | |
2029 | struct timespec *mtime) | |
2030 | { | |
2031 | struct ceph_msg *msg = req->r_request; | |
2032 | void *p; | |
2033 | size_t msg_size; | |
2034 | int flags = req->r_flags; | |
2035 | u64 data_len; | |
2036 | unsigned int i; | |
2037 | ||
2038 | req->r_snapid = snap_id; | |
2039 | req->r_snapc = ceph_get_snap_context(snapc); | |
2040 | ||
2041 | /* encode request */ | |
2042 | msg->hdr.version = cpu_to_le16(4); | |
2043 | ||
2044 | p = msg->front.iov_base; | |
2045 | ceph_encode_32(&p, 1); /* client_inc is always 1 */ | |
2046 | req->r_request_osdmap_epoch = p; | |
2047 | p += 4; | |
2048 | req->r_request_flags = p; | |
2049 | p += 4; | |
2050 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) | |
2051 | ceph_encode_timespec(p, mtime); | |
2052 | p += sizeof(struct ceph_timespec); | |
2053 | req->r_request_reassert_version = p; | |
2054 | p += sizeof(struct ceph_eversion); /* will get filled in */ | |
2055 | ||
2056 | /* oloc */ | |
2057 | ceph_encode_8(&p, 4); | |
2058 | ceph_encode_8(&p, 4); | |
2059 | ceph_encode_32(&p, 8 + 4 + 4); | |
2060 | req->r_request_pool = p; | |
2061 | p += 8; | |
2062 | ceph_encode_32(&p, -1); /* preferred */ | |
2063 | ceph_encode_32(&p, 0); /* key len */ | |
2064 | ||
2065 | ceph_encode_8(&p, 1); | |
2066 | req->r_request_pgid = p; | |
2067 | p += 8 + 4; | |
2068 | ceph_encode_32(&p, -1); /* preferred */ | |
2069 | ||
2070 | /* oid */ | |
2071 | ceph_encode_32(&p, req->r_oid_len); | |
2072 | memcpy(p, req->r_oid, req->r_oid_len); | |
2073 | dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); | |
2074 | p += req->r_oid_len; | |
2075 | ||
2076 | /* ops--can imply data */ | |
2077 | ceph_encode_16(&p, (u16)req->r_num_ops); | |
2078 | data_len = 0; | |
2079 | for (i = 0; i < req->r_num_ops; i++) { | |
2080 | data_len += osd_req_encode_op(req, p, i); | |
2081 | p += sizeof(struct ceph_osd_op); | |
2082 | } | |
2083 | ||
2084 | /* snaps */ | |
2085 | ceph_encode_64(&p, req->r_snapid); | |
2086 | ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); | |
2087 | ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); | |
2088 | if (req->r_snapc) { | |
2089 | for (i = 0; i < snapc->num_snaps; i++) { | |
2090 | ceph_encode_64(&p, req->r_snapc->snaps[i]); | |
2091 | } | |
2092 | } | |
2093 | ||
2094 | req->r_request_attempts = p; | |
2095 | p += 4; | |
2096 | ||
2097 | /* data */ | |
2098 | if (flags & CEPH_OSD_FLAG_WRITE) { | |
2099 | u16 data_off; | |
2100 | ||
2101 | /* | |
2102 | * The header "data_off" is a hint to the receiver | |
2103 | * allowing it to align received data into its | |
2104 | * buffers such that there's no need to re-copy | |
2105 | * it before writing it to disk (direct I/O). | |
2106 | */ | |
2107 | data_off = (u16) (off & 0xffff); | |
2108 | req->r_request->hdr.data_off = cpu_to_le16(data_off); | |
2109 | } | |
2110 | req->r_request->hdr.data_len = cpu_to_le32(data_len); | |
2111 | ||
2112 | BUG_ON(p > msg->front.iov_base + msg->front.iov_len); | |
2113 | msg_size = p - msg->front.iov_base; | |
2114 | msg->front.iov_len = msg_size; | |
2115 | msg->hdr.front_len = cpu_to_le32(msg_size); | |
2116 | ||
2117 | dout("build_request msg_size was %d\n", (int)msg_size); | |
2118 | } | |
2119 | EXPORT_SYMBOL(ceph_osdc_build_request); | |
2120 | ||
70636773 AE |
2121 | /* |
2122 | * Register request, send initial attempt. | |
2123 | */ | |
2124 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
2125 | struct ceph_osd_request *req, | |
2126 | bool nofail) | |
2127 | { | |
2128 | int rc = 0; | |
2129 | ||
f24e9980 SW |
2130 | down_read(&osdc->map_sem); |
2131 | mutex_lock(&osdc->request_mutex); | |
dc4b870c | 2132 | __register_request(osdc, req); |
c10ebbf5 AE |
2133 | req->r_sent = 0; |
2134 | req->r_got_reply = 0; | |
92451b49 AE |
2135 | rc = __map_request(osdc, req, 0); |
2136 | if (rc < 0) { | |
2137 | if (nofail) { | |
2138 | dout("osdc_start_request failed map, " | |
2139 | " will retry %lld\n", req->r_tid); | |
2140 | rc = 0; | |
73d9f7ee | 2141 | } else { |
2142 | __unregister_request(osdc, req); | |
f24e9980 | 2143 | } |
92451b49 | 2144 | goto out_unlock; |
f24e9980 | 2145 | } |
92451b49 AE |
2146 | if (req->r_osd == NULL) { |
2147 | dout("send_request %p no up osds in pg\n", req); | |
2148 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
2149 | } else { | |
7e2766a1 | 2150 | __send_queued(osdc); |
92451b49 AE |
2151 | } |
2152 | rc = 0; | |
234af26f | 2153 | out_unlock: |
f24e9980 SW |
2154 | mutex_unlock(&osdc->request_mutex); |
2155 | up_read(&osdc->map_sem); | |
2156 | return rc; | |
2157 | } | |
3d14c5d2 | 2158 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 SW |
2159 | |
2160 | /* | |
2161 | * wait for a request to complete | |
2162 | */ | |
2163 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
2164 | struct ceph_osd_request *req) | |
2165 | { | |
2166 | int rc; | |
2167 | ||
2168 | rc = wait_for_completion_interruptible(&req->r_completion); | |
2169 | if (rc < 0) { | |
2170 | mutex_lock(&osdc->request_mutex); | |
2171 | __cancel_request(req); | |
529cfcc4 | 2172 | __unregister_request(osdc, req); |
f24e9980 | 2173 | mutex_unlock(&osdc->request_mutex); |
25845472 | 2174 | complete_request(req); |
529cfcc4 | 2175 | dout("wait_request tid %llu canceled/timed out\n", req->r_tid); |
f24e9980 SW |
2176 | return rc; |
2177 | } | |
2178 | ||
2179 | dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); | |
2180 | return req->r_result; | |
2181 | } | |
3d14c5d2 | 2182 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
2183 | |
2184 | /* | |
2185 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
2186 | */ | |
2187 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
2188 | { | |
2189 | struct ceph_osd_request *req; | |
2190 | u64 last_tid, next_tid = 0; | |
2191 | ||
2192 | mutex_lock(&osdc->request_mutex); | |
2193 | last_tid = osdc->last_tid; | |
2194 | while (1) { | |
2195 | req = __lookup_request_ge(osdc, next_tid); | |
2196 | if (!req) | |
2197 | break; | |
2198 | if (req->r_tid > last_tid) | |
2199 | break; | |
2200 | ||
2201 | next_tid = req->r_tid + 1; | |
2202 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) | |
2203 | continue; | |
2204 | ||
2205 | ceph_osdc_get_request(req); | |
2206 | mutex_unlock(&osdc->request_mutex); | |
2207 | dout("sync waiting on tid %llu (last is %llu)\n", | |
2208 | req->r_tid, last_tid); | |
2209 | wait_for_completion(&req->r_safe_completion); | |
2210 | mutex_lock(&osdc->request_mutex); | |
2211 | ceph_osdc_put_request(req); | |
2212 | } | |
2213 | mutex_unlock(&osdc->request_mutex); | |
2214 | dout("sync done (thru tid %llu)\n", last_tid); | |
2215 | } | |
3d14c5d2 | 2216 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 | 2217 | |
dd935f44 JD |
2218 | /* |
2219 | * Call all pending notify callbacks - for use after a watch is | |
2220 | * unregistered, to make sure no more callbacks for it will be invoked | |
2221 | */ | |
2222 | extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) | |
2223 | { | |
2224 | flush_workqueue(osdc->notify_wq); | |
2225 | } | |
2226 | EXPORT_SYMBOL(ceph_osdc_flush_notifies); | |
2227 | ||
2228 | ||
f24e9980 SW |
2229 | /* |
2230 | * init, shutdown | |
2231 | */ | |
2232 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
2233 | { | |
2234 | int err; | |
2235 | ||
2236 | dout("init\n"); | |
2237 | osdc->client = client; | |
2238 | osdc->osdmap = NULL; | |
2239 | init_rwsem(&osdc->map_sem); | |
2240 | init_completion(&osdc->map_waiters); | |
2241 | osdc->last_requested_map = 0; | |
2242 | mutex_init(&osdc->request_mutex); | |
f24e9980 SW |
2243 | osdc->last_tid = 0; |
2244 | osdc->osds = RB_ROOT; | |
f5a2041b | 2245 | INIT_LIST_HEAD(&osdc->osd_lru); |
f24e9980 | 2246 | osdc->requests = RB_ROOT; |
422d2cb8 | 2247 | INIT_LIST_HEAD(&osdc->req_lru); |
6f6c7006 SW |
2248 | INIT_LIST_HEAD(&osdc->req_unsent); |
2249 | INIT_LIST_HEAD(&osdc->req_notarget); | |
a40c4f10 | 2250 | INIT_LIST_HEAD(&osdc->req_linger); |
f24e9980 SW |
2251 | osdc->num_requests = 0; |
2252 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); | |
f5a2041b | 2253 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10 YS |
2254 | spin_lock_init(&osdc->event_lock); |
2255 | osdc->event_tree = RB_ROOT; | |
2256 | osdc->event_count = 0; | |
f5a2041b YS |
2257 | |
2258 | schedule_delayed_work(&osdc->osds_timeout_work, | |
3d14c5d2 | 2259 | round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); |
f24e9980 | 2260 | |
5f44f142 | 2261 | err = -ENOMEM; |
f24e9980 SW |
2262 | osdc->req_mempool = mempool_create_kmalloc_pool(10, |
2263 | sizeof(struct ceph_osd_request)); | |
2264 | if (!osdc->req_mempool) | |
5f44f142 | 2265 | goto out; |
f24e9980 | 2266 | |
d50b409f SW |
2267 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
2268 | OSD_OP_FRONT_LEN, 10, true, | |
4f48280e | 2269 | "osd_op"); |
f24e9980 | 2270 | if (err < 0) |
5f44f142 | 2271 | goto out_mempool; |
d50b409f | 2272 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
4f48280e SW |
2273 | OSD_OPREPLY_FRONT_LEN, 10, true, |
2274 | "osd_op_reply"); | |
c16e7869 SW |
2275 | if (err < 0) |
2276 | goto out_msgpool; | |
a40c4f10 | 2277 | |
dbcae088 | 2278 | err = -ENOMEM; |
a40c4f10 | 2279 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); |
dbcae088 | 2280 | if (!osdc->notify_wq) |
a40c4f10 | 2281 | goto out_msgpool; |
f24e9980 | 2282 | return 0; |
5f44f142 | 2283 | |
c16e7869 SW |
2284 | out_msgpool: |
2285 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
2286 | out_mempool: |
2287 | mempool_destroy(osdc->req_mempool); | |
2288 | out: | |
2289 | return err; | |
f24e9980 SW |
2290 | } |
2291 | ||
2292 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
2293 | { | |
a40c4f10 YS |
2294 | flush_workqueue(osdc->notify_wq); |
2295 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 2296 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 2297 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
f24e9980 SW |
2298 | if (osdc->osdmap) { |
2299 | ceph_osdmap_destroy(osdc->osdmap); | |
2300 | osdc->osdmap = NULL; | |
2301 | } | |
aca420bc | 2302 | remove_all_osds(osdc); |
f24e9980 SW |
2303 | mempool_destroy(osdc->req_mempool); |
2304 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 2305 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
2306 | } |
2307 | ||
2308 | /* | |
2309 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
2310 | * *plen. Return number of bytes read, or error. | |
2311 | */ | |
2312 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
2313 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
2314 | u64 off, u64 *plen, | |
2315 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 2316 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
2317 | { |
2318 | struct ceph_osd_request *req; | |
2319 | int rc = 0; | |
2320 | ||
2321 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
2322 | vino.snap, off, *plen); | |
79528734 | 2323 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1, |
f24e9980 | 2324 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, |
acead002 | 2325 | NULL, truncate_seq, truncate_size, |
153e5167 | 2326 | false); |
6816282d SW |
2327 | if (IS_ERR(req)) |
2328 | return PTR_ERR(req); | |
f24e9980 SW |
2329 | |
2330 | /* it may be a short read due to an object boundary */ | |
0fff87ec | 2331 | |
406e2c9f | 2332 | osd_req_op_extent_osd_data_pages(req, 0, |
a4ce40a9 | 2333 | pages, *plen, page_align, false, false); |
f24e9980 | 2334 | |
e0c59487 | 2335 | dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", |
43bfe5de | 2336 | off, *plen, *plen, page_align); |
f24e9980 | 2337 | |
79528734 | 2338 | ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); |
02ee07d3 | 2339 | |
f24e9980 SW |
2340 | rc = ceph_osdc_start_request(osdc, req, false); |
2341 | if (!rc) | |
2342 | rc = ceph_osdc_wait_request(osdc, req); | |
2343 | ||
2344 | ceph_osdc_put_request(req); | |
2345 | dout("readpages result %d\n", rc); | |
2346 | return rc; | |
2347 | } | |
3d14c5d2 | 2348 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
2349 | |
2350 | /* | |
2351 | * do a synchronous write on N pages | |
2352 | */ | |
2353 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
2354 | struct ceph_file_layout *layout, | |
2355 | struct ceph_snap_context *snapc, | |
2356 | u64 off, u64 len, | |
2357 | u32 truncate_seq, u64 truncate_size, | |
2358 | struct timespec *mtime, | |
24808826 | 2359 | struct page **pages, int num_pages) |
f24e9980 SW |
2360 | { |
2361 | struct ceph_osd_request *req; | |
2362 | int rc = 0; | |
b7495fc2 | 2363 | int page_align = off & ~PAGE_MASK; |
f24e9980 | 2364 | |
acead002 | 2365 | BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ |
79528734 | 2366 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1, |
f24e9980 | 2367 | CEPH_OSD_OP_WRITE, |
24808826 | 2368 | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, |
acead002 | 2369 | snapc, truncate_seq, truncate_size, |
153e5167 | 2370 | true); |
6816282d SW |
2371 | if (IS_ERR(req)) |
2372 | return PTR_ERR(req); | |
f24e9980 SW |
2373 | |
2374 | /* it may be a short write due to an object boundary */ | |
406e2c9f | 2375 | osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, |
43bfe5de AE |
2376 | false, false); |
2377 | dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); | |
f24e9980 | 2378 | |
79528734 | 2379 | ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); |
02ee07d3 | 2380 | |
87f979d3 | 2381 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
2382 | if (!rc) |
2383 | rc = ceph_osdc_wait_request(osdc, req); | |
2384 | ||
2385 | ceph_osdc_put_request(req); | |
2386 | if (rc == 0) | |
2387 | rc = len; | |
2388 | dout("writepages result %d\n", rc); | |
2389 | return rc; | |
2390 | } | |
3d14c5d2 | 2391 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 | 2392 | |
5522ae0b AE |
2393 | int ceph_osdc_setup(void) |
2394 | { | |
2395 | BUG_ON(ceph_osd_request_cache); | |
2396 | ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", | |
2397 | sizeof (struct ceph_osd_request), | |
2398 | __alignof__(struct ceph_osd_request), | |
2399 | 0, NULL); | |
2400 | ||
2401 | return ceph_osd_request_cache ? 0 : -ENOMEM; | |
2402 | } | |
2403 | EXPORT_SYMBOL(ceph_osdc_setup); | |
2404 | ||
2405 | void ceph_osdc_cleanup(void) | |
2406 | { | |
2407 | BUG_ON(!ceph_osd_request_cache); | |
2408 | kmem_cache_destroy(ceph_osd_request_cache); | |
2409 | ceph_osd_request_cache = NULL; | |
2410 | } | |
2411 | EXPORT_SYMBOL(ceph_osdc_cleanup); | |
2412 | ||
f24e9980 SW |
2413 | /* |
2414 | * handle incoming message | |
2415 | */ | |
2416 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
2417 | { | |
2418 | struct ceph_osd *osd = con->private; | |
32c895e7 | 2419 | struct ceph_osd_client *osdc; |
f24e9980 SW |
2420 | int type = le16_to_cpu(msg->hdr.type); |
2421 | ||
2422 | if (!osd) | |
4a32f93d | 2423 | goto out; |
32c895e7 | 2424 | osdc = osd->o_osdc; |
f24e9980 SW |
2425 | |
2426 | switch (type) { | |
2427 | case CEPH_MSG_OSD_MAP: | |
2428 | ceph_osdc_handle_map(osdc, msg); | |
2429 | break; | |
2430 | case CEPH_MSG_OSD_OPREPLY: | |
350b1c32 | 2431 | handle_reply(osdc, msg, con); |
f24e9980 | 2432 | break; |
a40c4f10 YS |
2433 | case CEPH_MSG_WATCH_NOTIFY: |
2434 | handle_watch_notify(osdc, msg); | |
2435 | break; | |
f24e9980 SW |
2436 | |
2437 | default: | |
2438 | pr_err("received unknown message type %d %s\n", type, | |
2439 | ceph_msg_type_name(type)); | |
2440 | } | |
4a32f93d | 2441 | out: |
f24e9980 SW |
2442 | ceph_msg_put(msg); |
2443 | } | |
2444 | ||
5b3a4db3 | 2445 | /* |
21b667f6 SW |
2446 | * lookup and return message for incoming reply. set up reply message |
2447 | * pages. | |
5b3a4db3 SW |
2448 | */ |
2449 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
2450 | struct ceph_msg_header *hdr, |
2451 | int *skip) | |
f24e9980 SW |
2452 | { |
2453 | struct ceph_osd *osd = con->private; | |
2454 | struct ceph_osd_client *osdc = osd->o_osdc; | |
2450418c | 2455 | struct ceph_msg *m; |
0547a9b3 | 2456 | struct ceph_osd_request *req; |
5b3a4db3 SW |
2457 | int front = le32_to_cpu(hdr->front_len); |
2458 | int data_len = le32_to_cpu(hdr->data_len); | |
0547a9b3 | 2459 | u64 tid; |
f24e9980 | 2460 | |
0547a9b3 YS |
2461 | tid = le64_to_cpu(hdr->tid); |
2462 | mutex_lock(&osdc->request_mutex); | |
2463 | req = __lookup_request(osdc, tid); | |
2464 | if (!req) { | |
2465 | *skip = 1; | |
2466 | m = NULL; | |
756a16a5 SW |
2467 | dout("get_reply unknown tid %llu from osd%d\n", tid, |
2468 | osd->o_osd); | |
0547a9b3 YS |
2469 | goto out; |
2470 | } | |
c16e7869 | 2471 | |
ace6d3a9 | 2472 | if (req->r_reply->con) |
8921d114 | 2473 | dout("%s revoking msg %p from old con %p\n", __func__, |
ace6d3a9 AE |
2474 | req->r_reply, req->r_reply->con); |
2475 | ceph_msg_revoke_incoming(req->r_reply); | |
0547a9b3 | 2476 | |
c16e7869 | 2477 | if (front > req->r_reply->front.iov_len) { |
4974341e AE |
2478 | pr_warning("get_reply front %d > preallocated %d (%u#%llu)\n", |
2479 | front, (int)req->r_reply->front.iov_len, | |
2480 | (unsigned int)con->peer_name.type, | |
2481 | le64_to_cpu(con->peer_name.num)); | |
b61c2763 | 2482 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); |
a79832f2 | 2483 | if (!m) |
c16e7869 SW |
2484 | goto out; |
2485 | ceph_msg_put(req->r_reply); | |
2486 | req->r_reply = m; | |
2487 | } | |
2488 | m = ceph_msg_get(req->r_reply); | |
2489 | ||
0547a9b3 | 2490 | if (data_len > 0) { |
a4ce40a9 | 2491 | struct ceph_osd_data *osd_data; |
0fff87ec | 2492 | |
a4ce40a9 AE |
2493 | /* |
2494 | * XXX This is assuming there is only one op containing | |
2495 | * XXX page data. Probably OK for reads, but this | |
2496 | * XXX ought to be done more generally. | |
2497 | */ | |
406e2c9f | 2498 | osd_data = osd_req_op_extent_osd_data(req, 0); |
0fff87ec | 2499 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { |
0fff87ec | 2500 | if (osd_data->pages && |
e0c59487 | 2501 | unlikely(osd_data->length < data_len)) { |
2ac2b7a6 | 2502 | |
e0c59487 AE |
2503 | pr_warning("tid %lld reply has %d bytes " |
2504 | "we had only %llu bytes ready\n", | |
2505 | tid, data_len, osd_data->length); | |
2ac2b7a6 AE |
2506 | *skip = 1; |
2507 | ceph_msg_put(m); | |
2508 | m = NULL; | |
2509 | goto out; | |
2510 | } | |
2ac2b7a6 | 2511 | } |
0547a9b3 | 2512 | } |
5b3a4db3 | 2513 | *skip = 0; |
c16e7869 | 2514 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 YS |
2515 | |
2516 | out: | |
2517 | mutex_unlock(&osdc->request_mutex); | |
2450418c | 2518 | return m; |
5b3a4db3 SW |
2519 | |
2520 | } | |
2521 | ||
2522 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, | |
2523 | struct ceph_msg_header *hdr, | |
2524 | int *skip) | |
2525 | { | |
2526 | struct ceph_osd *osd = con->private; | |
2527 | int type = le16_to_cpu(hdr->type); | |
2528 | int front = le32_to_cpu(hdr->front_len); | |
2529 | ||
1c20f2d2 | 2530 | *skip = 0; |
5b3a4db3 SW |
2531 | switch (type) { |
2532 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 2533 | case CEPH_MSG_WATCH_NOTIFY: |
b61c2763 | 2534 | return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3 SW |
2535 | case CEPH_MSG_OSD_OPREPLY: |
2536 | return get_reply(con, hdr, skip); | |
2537 | default: | |
2538 | pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, | |
2539 | osd->o_osd); | |
2540 | *skip = 1; | |
2541 | return NULL; | |
2542 | } | |
f24e9980 SW |
2543 | } |
2544 | ||
2545 | /* | |
2546 | * Wrappers to refcount containing ceph_osd struct | |
2547 | */ | |
2548 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
2549 | { | |
2550 | struct ceph_osd *osd = con->private; | |
2551 | if (get_osd(osd)) | |
2552 | return con; | |
2553 | return NULL; | |
2554 | } | |
2555 | ||
2556 | static void put_osd_con(struct ceph_connection *con) | |
2557 | { | |
2558 | struct ceph_osd *osd = con->private; | |
2559 | put_osd(osd); | |
2560 | } | |
2561 | ||
4e7a5dcd SW |
2562 | /* |
2563 | * authentication | |
2564 | */ | |
a3530df3 AE |
2565 | /* |
2566 | * Note: returned pointer is the address of a structure that's | |
2567 | * managed separately. Caller must *not* attempt to free it. | |
2568 | */ | |
2569 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 2570 | int *proto, int force_new) |
4e7a5dcd SW |
2571 | { |
2572 | struct ceph_osd *o = con->private; | |
2573 | struct ceph_osd_client *osdc = o->o_osdc; | |
2574 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 2575 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 2576 | |
74f1869f | 2577 | if (force_new && auth->authorizer) { |
27859f97 | 2578 | ceph_auth_destroy_authorizer(ac, auth->authorizer); |
74f1869f AE |
2579 | auth->authorizer = NULL; |
2580 | } | |
27859f97 SW |
2581 | if (!auth->authorizer) { |
2582 | int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
2583 | auth); | |
4e7a5dcd | 2584 | if (ret) |
a3530df3 | 2585 | return ERR_PTR(ret); |
27859f97 SW |
2586 | } else { |
2587 | int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
0bed9b5c SW |
2588 | auth); |
2589 | if (ret) | |
2590 | return ERR_PTR(ret); | |
4e7a5dcd | 2591 | } |
4e7a5dcd | 2592 | *proto = ac->protocol; |
74f1869f | 2593 | |
a3530df3 | 2594 | return auth; |
4e7a5dcd SW |
2595 | } |
2596 | ||
2597 | ||
2598 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
2599 | { | |
2600 | struct ceph_osd *o = con->private; | |
2601 | struct ceph_osd_client *osdc = o->o_osdc; | |
2602 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2603 | ||
27859f97 | 2604 | return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
2605 | } |
2606 | ||
9bd2e6f8 SW |
2607 | static int invalidate_authorizer(struct ceph_connection *con) |
2608 | { | |
2609 | struct ceph_osd *o = con->private; | |
2610 | struct ceph_osd_client *osdc = o->o_osdc; | |
2611 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2612 | ||
27859f97 | 2613 | ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
9bd2e6f8 SW |
2614 | return ceph_monc_validate_auth(&osdc->client->monc); |
2615 | } | |
4e7a5dcd | 2616 | |
9e32789f | 2617 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
2618 | .get = get_osd_con, |
2619 | .put = put_osd_con, | |
2620 | .dispatch = dispatch, | |
4e7a5dcd SW |
2621 | .get_authorizer = get_authorizer, |
2622 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 2623 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 2624 | .alloc_msg = alloc_msg, |
81b024e7 | 2625 | .fault = osd_reset, |
f24e9980 | 2626 | }; |