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