Commit | Line | Data |
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a4ce40a9 | 1 | |
3d14c5d2 | 2 | #include <linux/ceph/ceph_debug.h> |
f24e9980 | 3 | |
3d14c5d2 | 4 | #include <linux/module.h> |
f24e9980 SW |
5 | #include <linux/err.h> |
6 | #include <linux/highmem.h> | |
7 | #include <linux/mm.h> | |
8 | #include <linux/pagemap.h> | |
9 | #include <linux/slab.h> | |
10 | #include <linux/uaccess.h> | |
68b4476b YS |
11 | #ifdef CONFIG_BLOCK |
12 | #include <linux/bio.h> | |
13 | #endif | |
f24e9980 | 14 | |
3d14c5d2 YS |
15 | #include <linux/ceph/libceph.h> |
16 | #include <linux/ceph/osd_client.h> | |
17 | #include <linux/ceph/messenger.h> | |
18 | #include <linux/ceph/decode.h> | |
19 | #include <linux/ceph/auth.h> | |
20 | #include <linux/ceph/pagelist.h> | |
f24e9980 | 21 | |
c16e7869 SW |
22 | #define OSD_OP_FRONT_LEN 4096 |
23 | #define OSD_OPREPLY_FRONT_LEN 512 | |
0d59ab81 | 24 | |
5522ae0b AE |
25 | static struct kmem_cache *ceph_osd_request_cache; |
26 | ||
9e32789f | 27 | static const struct ceph_connection_operations osd_con_ops; |
f24e9980 | 28 | |
f9d25199 | 29 | static void __send_queued(struct ceph_osd_client *osdc); |
6f6c7006 | 30 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); |
a40c4f10 YS |
31 | static void __register_request(struct ceph_osd_client *osdc, |
32 | struct ceph_osd_request *req); | |
2cc6128a ID |
33 | static void __unregister_request(struct ceph_osd_client *osdc, |
34 | struct ceph_osd_request *req); | |
a40c4f10 YS |
35 | static void __unregister_linger_request(struct ceph_osd_client *osdc, |
36 | struct ceph_osd_request *req); | |
2cc6128a | 37 | static void __enqueue_request(struct ceph_osd_request *req); |
56e925b6 SW |
38 | static void __send_request(struct ceph_osd_client *osdc, |
39 | struct ceph_osd_request *req); | |
f24e9980 SW |
40 | |
41 | /* | |
42 | * Implement client access to distributed object storage cluster. | |
43 | * | |
44 | * All data objects are stored within a cluster/cloud of OSDs, or | |
45 | * "object storage devices." (Note that Ceph OSDs have _nothing_ to | |
46 | * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply | |
47 | * remote daemons serving up and coordinating consistent and safe | |
48 | * access to storage. | |
49 | * | |
50 | * Cluster membership and the mapping of data objects onto storage devices | |
51 | * are described by the osd map. | |
52 | * | |
53 | * We keep track of pending OSD requests (read, write), resubmit | |
54 | * requests to different OSDs when the cluster topology/data layout | |
55 | * change, or retry the affected requests when the communications | |
56 | * channel with an OSD is reset. | |
57 | */ | |
58 | ||
59 | /* | |
60 | * calculate the mapping of a file extent onto an object, and fill out the | |
61 | * request accordingly. shorten extent as necessary if it crosses an | |
62 | * object boundary. | |
63 | * | |
64 | * fill osd op in request message. | |
65 | */ | |
dbe0fc41 | 66 | static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, |
a19dadfb | 67 | u64 *objnum, u64 *objoff, u64 *objlen) |
f24e9980 | 68 | { |
60e56f13 | 69 | u64 orig_len = *plen; |
d63b77f4 | 70 | int r; |
f24e9980 | 71 | |
60e56f13 | 72 | /* object extent? */ |
75d1c941 AE |
73 | r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, |
74 | objoff, objlen); | |
d63b77f4 SW |
75 | if (r < 0) |
76 | return r; | |
75d1c941 AE |
77 | if (*objlen < orig_len) { |
78 | *plen = *objlen; | |
60e56f13 AE |
79 | dout(" skipping last %llu, final file extent %llu~%llu\n", |
80 | orig_len - *plen, off, *plen); | |
81 | } | |
82 | ||
75d1c941 | 83 | dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); |
f24e9980 | 84 | |
3ff5f385 | 85 | return 0; |
f24e9980 SW |
86 | } |
87 | ||
c54d47bf AE |
88 | static void ceph_osd_data_init(struct ceph_osd_data *osd_data) |
89 | { | |
90 | memset(osd_data, 0, sizeof (*osd_data)); | |
91 | osd_data->type = CEPH_OSD_DATA_TYPE_NONE; | |
92 | } | |
93 | ||
a4ce40a9 | 94 | static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
95 | struct page **pages, u64 length, u32 alignment, |
96 | bool pages_from_pool, bool own_pages) | |
97 | { | |
98 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; | |
99 | osd_data->pages = pages; | |
100 | osd_data->length = length; | |
101 | osd_data->alignment = alignment; | |
102 | osd_data->pages_from_pool = pages_from_pool; | |
103 | osd_data->own_pages = own_pages; | |
104 | } | |
43bfe5de | 105 | |
a4ce40a9 | 106 | static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
107 | struct ceph_pagelist *pagelist) |
108 | { | |
109 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; | |
110 | osd_data->pagelist = pagelist; | |
111 | } | |
43bfe5de AE |
112 | |
113 | #ifdef CONFIG_BLOCK | |
a4ce40a9 | 114 | static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, |
43bfe5de AE |
115 | struct bio *bio, size_t bio_length) |
116 | { | |
117 | osd_data->type = CEPH_OSD_DATA_TYPE_BIO; | |
118 | osd_data->bio = bio; | |
119 | osd_data->bio_length = bio_length; | |
120 | } | |
43bfe5de AE |
121 | #endif /* CONFIG_BLOCK */ |
122 | ||
8a703a38 IC |
123 | #define osd_req_op_data(oreq, whch, typ, fld) \ |
124 | ({ \ | |
125 | struct ceph_osd_request *__oreq = (oreq); \ | |
126 | unsigned int __whch = (whch); \ | |
127 | BUG_ON(__whch >= __oreq->r_num_ops); \ | |
128 | &__oreq->r_ops[__whch].typ.fld; \ | |
129 | }) | |
863c7eb5 | 130 | |
49719778 AE |
131 | static struct ceph_osd_data * |
132 | osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) | |
133 | { | |
134 | BUG_ON(which >= osd_req->r_num_ops); | |
135 | ||
136 | return &osd_req->r_ops[which].raw_data_in; | |
137 | } | |
138 | ||
a4ce40a9 AE |
139 | struct ceph_osd_data * |
140 | osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, | |
406e2c9f | 141 | unsigned int which) |
a4ce40a9 | 142 | { |
863c7eb5 | 143 | return osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
144 | } |
145 | EXPORT_SYMBOL(osd_req_op_extent_osd_data); | |
146 | ||
a4ce40a9 AE |
147 | struct ceph_osd_data * |
148 | osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, | |
149 | unsigned int which) | |
150 | { | |
863c7eb5 | 151 | return osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
152 | } |
153 | EXPORT_SYMBOL(osd_req_op_cls_response_data); /* ??? */ | |
154 | ||
49719778 AE |
155 | void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, |
156 | unsigned int which, struct page **pages, | |
157 | u64 length, u32 alignment, | |
158 | bool pages_from_pool, bool own_pages) | |
159 | { | |
160 | struct ceph_osd_data *osd_data; | |
161 | ||
162 | osd_data = osd_req_op_raw_data_in(osd_req, which); | |
163 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
164 | pages_from_pool, own_pages); | |
165 | } | |
166 | EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); | |
167 | ||
a4ce40a9 | 168 | void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, |
406e2c9f AE |
169 | unsigned int which, struct page **pages, |
170 | u64 length, u32 alignment, | |
a4ce40a9 AE |
171 | bool pages_from_pool, bool own_pages) |
172 | { | |
173 | struct ceph_osd_data *osd_data; | |
174 | ||
863c7eb5 | 175 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 AE |
176 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
177 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
178 | } |
179 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); | |
180 | ||
181 | void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, | |
406e2c9f | 182 | unsigned int which, struct ceph_pagelist *pagelist) |
a4ce40a9 AE |
183 | { |
184 | struct ceph_osd_data *osd_data; | |
185 | ||
863c7eb5 | 186 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); |
a4ce40a9 | 187 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
188 | } |
189 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); | |
190 | ||
191 | #ifdef CONFIG_BLOCK | |
192 | void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, | |
406e2c9f | 193 | unsigned int which, struct bio *bio, size_t bio_length) |
a4ce40a9 AE |
194 | { |
195 | struct ceph_osd_data *osd_data; | |
863c7eb5 AE |
196 | |
197 | osd_data = osd_req_op_data(osd_req, which, extent, osd_data); | |
a4ce40a9 | 198 | ceph_osd_data_bio_init(osd_data, bio, bio_length); |
a4ce40a9 AE |
199 | } |
200 | EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); | |
201 | #endif /* CONFIG_BLOCK */ | |
202 | ||
203 | static void osd_req_op_cls_request_info_pagelist( | |
204 | struct ceph_osd_request *osd_req, | |
205 | unsigned int which, struct ceph_pagelist *pagelist) | |
206 | { | |
207 | struct ceph_osd_data *osd_data; | |
208 | ||
863c7eb5 | 209 | osd_data = osd_req_op_data(osd_req, which, cls, request_info); |
a4ce40a9 | 210 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
a4ce40a9 AE |
211 | } |
212 | ||
04017e29 AE |
213 | void osd_req_op_cls_request_data_pagelist( |
214 | struct ceph_osd_request *osd_req, | |
215 | unsigned int which, struct ceph_pagelist *pagelist) | |
216 | { | |
217 | struct ceph_osd_data *osd_data; | |
218 | ||
863c7eb5 | 219 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); |
04017e29 AE |
220 | ceph_osd_data_pagelist_init(osd_data, pagelist); |
221 | } | |
222 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); | |
223 | ||
6c57b554 AE |
224 | void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, |
225 | unsigned int which, struct page **pages, u64 length, | |
226 | u32 alignment, bool pages_from_pool, bool own_pages) | |
227 | { | |
228 | struct ceph_osd_data *osd_data; | |
229 | ||
230 | osd_data = osd_req_op_data(osd_req, which, cls, request_data); | |
231 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, | |
232 | pages_from_pool, own_pages); | |
233 | } | |
234 | EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); | |
235 | ||
a4ce40a9 AE |
236 | void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, |
237 | unsigned int which, struct page **pages, u64 length, | |
238 | u32 alignment, bool pages_from_pool, bool own_pages) | |
239 | { | |
240 | struct ceph_osd_data *osd_data; | |
241 | ||
863c7eb5 | 242 | osd_data = osd_req_op_data(osd_req, which, cls, response_data); |
a4ce40a9 AE |
243 | ceph_osd_data_pages_init(osd_data, pages, length, alignment, |
244 | pages_from_pool, own_pages); | |
a4ce40a9 AE |
245 | } |
246 | EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); | |
247 | ||
23c08a9c AE |
248 | static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) |
249 | { | |
250 | switch (osd_data->type) { | |
251 | case CEPH_OSD_DATA_TYPE_NONE: | |
252 | return 0; | |
253 | case CEPH_OSD_DATA_TYPE_PAGES: | |
254 | return osd_data->length; | |
255 | case CEPH_OSD_DATA_TYPE_PAGELIST: | |
256 | return (u64)osd_data->pagelist->length; | |
257 | #ifdef CONFIG_BLOCK | |
258 | case CEPH_OSD_DATA_TYPE_BIO: | |
259 | return (u64)osd_data->bio_length; | |
260 | #endif /* CONFIG_BLOCK */ | |
261 | default: | |
262 | WARN(true, "unrecognized data type %d\n", (int)osd_data->type); | |
263 | return 0; | |
264 | } | |
265 | } | |
266 | ||
c54d47bf AE |
267 | static void ceph_osd_data_release(struct ceph_osd_data *osd_data) |
268 | { | |
5476492f | 269 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { |
c54d47bf AE |
270 | int num_pages; |
271 | ||
272 | num_pages = calc_pages_for((u64)osd_data->alignment, | |
273 | (u64)osd_data->length); | |
274 | ceph_release_page_vector(osd_data->pages, num_pages); | |
275 | } | |
5476492f AE |
276 | ceph_osd_data_init(osd_data); |
277 | } | |
278 | ||
279 | static void osd_req_op_data_release(struct ceph_osd_request *osd_req, | |
280 | unsigned int which) | |
281 | { | |
282 | struct ceph_osd_req_op *op; | |
283 | ||
284 | BUG_ON(which >= osd_req->r_num_ops); | |
285 | op = &osd_req->r_ops[which]; | |
286 | ||
287 | switch (op->op) { | |
288 | case CEPH_OSD_OP_READ: | |
289 | case CEPH_OSD_OP_WRITE: | |
e30b7577 | 290 | case CEPH_OSD_OP_WRITEFULL: |
5476492f AE |
291 | ceph_osd_data_release(&op->extent.osd_data); |
292 | break; | |
293 | case CEPH_OSD_OP_CALL: | |
294 | ceph_osd_data_release(&op->cls.request_info); | |
04017e29 | 295 | ceph_osd_data_release(&op->cls.request_data); |
5476492f AE |
296 | ceph_osd_data_release(&op->cls.response_data); |
297 | break; | |
d74b50be YZ |
298 | case CEPH_OSD_OP_SETXATTR: |
299 | case CEPH_OSD_OP_CMPXATTR: | |
300 | ceph_osd_data_release(&op->xattr.osd_data); | |
301 | break; | |
66ba609f YZ |
302 | case CEPH_OSD_OP_STAT: |
303 | ceph_osd_data_release(&op->raw_data_in); | |
304 | break; | |
5476492f AE |
305 | default: |
306 | break; | |
307 | } | |
c54d47bf AE |
308 | } |
309 | ||
f24e9980 SW |
310 | /* |
311 | * requests | |
312 | */ | |
9e94af20 | 313 | static void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 314 | { |
9e94af20 ID |
315 | struct ceph_osd_request *req = container_of(kref, |
316 | struct ceph_osd_request, r_kref); | |
5476492f | 317 | unsigned int which; |
415e49a9 | 318 | |
9e94af20 ID |
319 | dout("%s %p (r_request %p r_reply %p)\n", __func__, req, |
320 | req->r_request, req->r_reply); | |
6562d661 ID |
321 | WARN_ON(!RB_EMPTY_NODE(&req->r_node)); |
322 | WARN_ON(!list_empty(&req->r_req_lru_item)); | |
323 | WARN_ON(!list_empty(&req->r_osd_item)); | |
324 | WARN_ON(!list_empty(&req->r_linger_item)); | |
325 | WARN_ON(!list_empty(&req->r_linger_osd_item)); | |
326 | WARN_ON(req->r_osd); | |
9e94af20 | 327 | |
415e49a9 SW |
328 | if (req->r_request) |
329 | ceph_msg_put(req->r_request); | |
ace6d3a9 | 330 | if (req->r_reply) { |
8921d114 | 331 | ceph_msg_revoke_incoming(req->r_reply); |
ab8cb34a | 332 | ceph_msg_put(req->r_reply); |
ace6d3a9 | 333 | } |
0fff87ec | 334 | |
5476492f AE |
335 | for (which = 0; which < req->r_num_ops; which++) |
336 | osd_req_op_data_release(req, which); | |
0fff87ec | 337 | |
415e49a9 SW |
338 | ceph_put_snap_context(req->r_snapc); |
339 | if (req->r_mempool) | |
340 | mempool_free(req, req->r_osdc->req_mempool); | |
3f1af42a | 341 | else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) |
5522ae0b | 342 | kmem_cache_free(ceph_osd_request_cache, req); |
3f1af42a ID |
343 | else |
344 | kfree(req); | |
f24e9980 | 345 | } |
9e94af20 ID |
346 | |
347 | void ceph_osdc_get_request(struct ceph_osd_request *req) | |
348 | { | |
349 | dout("%s %p (was %d)\n", __func__, req, | |
350 | atomic_read(&req->r_kref.refcount)); | |
351 | kref_get(&req->r_kref); | |
352 | } | |
353 | EXPORT_SYMBOL(ceph_osdc_get_request); | |
354 | ||
355 | void ceph_osdc_put_request(struct ceph_osd_request *req) | |
356 | { | |
357 | dout("%s %p (was %d)\n", __func__, req, | |
358 | atomic_read(&req->r_kref.refcount)); | |
359 | kref_put(&req->r_kref, ceph_osdc_release_request); | |
360 | } | |
361 | EXPORT_SYMBOL(ceph_osdc_put_request); | |
68b4476b | 362 | |
3499e8a5 | 363 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 364 | struct ceph_snap_context *snapc, |
1b83bef2 | 365 | unsigned int num_ops, |
3499e8a5 | 366 | bool use_mempool, |
54a54007 | 367 | gfp_t gfp_flags) |
f24e9980 SW |
368 | { |
369 | struct ceph_osd_request *req; | |
370 | struct ceph_msg *msg; | |
1b83bef2 SW |
371 | size_t msg_size; |
372 | ||
f24e9980 | 373 | if (use_mempool) { |
3f1af42a | 374 | BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); |
3499e8a5 | 375 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
3f1af42a ID |
376 | } else if (num_ops <= CEPH_OSD_SLAB_OPS) { |
377 | req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); | |
f24e9980 | 378 | } else { |
3f1af42a ID |
379 | BUG_ON(num_ops > CEPH_OSD_MAX_OPS); |
380 | req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), | |
381 | gfp_flags); | |
f24e9980 | 382 | } |
3f1af42a | 383 | if (unlikely(!req)) |
a79832f2 | 384 | return NULL; |
f24e9980 | 385 | |
3f1af42a ID |
386 | /* req only, each op is zeroed in _osd_req_op_init() */ |
387 | memset(req, 0, sizeof(*req)); | |
388 | ||
f24e9980 SW |
389 | req->r_osdc = osdc; |
390 | req->r_mempool = use_mempool; | |
79528734 | 391 | req->r_num_ops = num_ops; |
68b4476b | 392 | |
415e49a9 | 393 | kref_init(&req->r_kref); |
f24e9980 SW |
394 | init_completion(&req->r_completion); |
395 | init_completion(&req->r_safe_completion); | |
a978fa20 | 396 | RB_CLEAR_NODE(&req->r_node); |
f24e9980 | 397 | INIT_LIST_HEAD(&req->r_unsafe_item); |
a40c4f10 | 398 | INIT_LIST_HEAD(&req->r_linger_item); |
1d0326b1 | 399 | INIT_LIST_HEAD(&req->r_linger_osd_item); |
935b639a | 400 | INIT_LIST_HEAD(&req->r_req_lru_item); |
cd43045c SW |
401 | INIT_LIST_HEAD(&req->r_osd_item); |
402 | ||
3c972c95 | 403 | req->r_base_oloc.pool = -1; |
205ee118 | 404 | req->r_target_oloc.pool = -1; |
22116525 | 405 | |
3f1af42a ID |
406 | msg_size = OSD_OPREPLY_FRONT_LEN; |
407 | if (num_ops > CEPH_OSD_SLAB_OPS) { | |
408 | /* ceph_osd_op and rval */ | |
409 | msg_size += (num_ops - CEPH_OSD_SLAB_OPS) * | |
410 | (sizeof(struct ceph_osd_op) + 4); | |
411 | } | |
412 | ||
c16e7869 SW |
413 | /* create reply message */ |
414 | if (use_mempool) | |
415 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
416 | else | |
3f1af42a ID |
417 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, |
418 | gfp_flags, true); | |
a79832f2 | 419 | if (!msg) { |
c16e7869 | 420 | ceph_osdc_put_request(req); |
a79832f2 | 421 | return NULL; |
c16e7869 SW |
422 | } |
423 | req->r_reply = msg; | |
424 | ||
ae458f5a ID |
425 | msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ |
426 | msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ | |
427 | msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ | |
428 | msg_size += 1 + 8 + 4 + 4; /* pgid */ | |
429 | msg_size += 4 + CEPH_MAX_OID_NAME_LEN; /* oid */ | |
430 | msg_size += 2 + num_ops * sizeof(struct ceph_osd_op); | |
431 | msg_size += 8; /* snapid */ | |
432 | msg_size += 8; /* snap_seq */ | |
433 | msg_size += 4 + 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ | |
434 | msg_size += 4; /* retry_attempt */ | |
435 | ||
c16e7869 | 436 | /* create request message; allow space for oid */ |
f24e9980 | 437 | if (use_mempool) |
8f3bc053 | 438 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 439 | else |
b61c2763 | 440 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); |
a79832f2 | 441 | if (!msg) { |
f24e9980 | 442 | ceph_osdc_put_request(req); |
a79832f2 | 443 | return NULL; |
f24e9980 | 444 | } |
68b4476b | 445 | |
f24e9980 | 446 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 YS |
447 | |
448 | req->r_request = msg; | |
3499e8a5 YS |
449 | |
450 | return req; | |
451 | } | |
3d14c5d2 | 452 | EXPORT_SYMBOL(ceph_osdc_alloc_request); |
3499e8a5 | 453 | |
a8dd0a37 | 454 | static bool osd_req_opcode_valid(u16 opcode) |
68b4476b | 455 | { |
a8dd0a37 | 456 | switch (opcode) { |
70b5bfa3 ID |
457 | #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; |
458 | __CEPH_FORALL_OSD_OPS(GENERATE_CASE) | |
459 | #undef GENERATE_CASE | |
a8dd0a37 AE |
460 | default: |
461 | return false; | |
462 | } | |
463 | } | |
464 | ||
33803f33 AE |
465 | /* |
466 | * This is an osd op init function for opcodes that have no data or | |
467 | * other information associated with them. It also serves as a | |
468 | * common init routine for all the other init functions, below. | |
469 | */ | |
c99d2d4a | 470 | static struct ceph_osd_req_op * |
49719778 | 471 | _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, |
144cba14 | 472 | u16 opcode, u32 flags) |
33803f33 | 473 | { |
c99d2d4a AE |
474 | struct ceph_osd_req_op *op; |
475 | ||
476 | BUG_ON(which >= osd_req->r_num_ops); | |
33803f33 AE |
477 | BUG_ON(!osd_req_opcode_valid(opcode)); |
478 | ||
c99d2d4a | 479 | op = &osd_req->r_ops[which]; |
33803f33 | 480 | memset(op, 0, sizeof (*op)); |
33803f33 | 481 | op->op = opcode; |
144cba14 | 482 | op->flags = flags; |
c99d2d4a AE |
483 | |
484 | return op; | |
33803f33 AE |
485 | } |
486 | ||
49719778 | 487 | void osd_req_op_init(struct ceph_osd_request *osd_req, |
144cba14 | 488 | unsigned int which, u16 opcode, u32 flags) |
49719778 | 489 | { |
144cba14 | 490 | (void)_osd_req_op_init(osd_req, which, opcode, flags); |
49719778 AE |
491 | } |
492 | EXPORT_SYMBOL(osd_req_op_init); | |
493 | ||
c99d2d4a AE |
494 | void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
495 | unsigned int which, u16 opcode, | |
33803f33 AE |
496 | u64 offset, u64 length, |
497 | u64 truncate_size, u32 truncate_seq) | |
498 | { | |
144cba14 YZ |
499 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
500 | opcode, 0); | |
33803f33 AE |
501 | size_t payload_len = 0; |
502 | ||
ad7a60de | 503 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
e30b7577 ID |
504 | opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && |
505 | opcode != CEPH_OSD_OP_TRUNCATE); | |
33803f33 | 506 | |
33803f33 AE |
507 | op->extent.offset = offset; |
508 | op->extent.length = length; | |
509 | op->extent.truncate_size = truncate_size; | |
510 | op->extent.truncate_seq = truncate_seq; | |
e30b7577 | 511 | if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) |
33803f33 AE |
512 | payload_len += length; |
513 | ||
de2aa102 | 514 | op->indata_len = payload_len; |
33803f33 AE |
515 | } |
516 | EXPORT_SYMBOL(osd_req_op_extent_init); | |
517 | ||
c99d2d4a AE |
518 | void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
519 | unsigned int which, u64 length) | |
e5975c7c | 520 | { |
c99d2d4a AE |
521 | struct ceph_osd_req_op *op; |
522 | u64 previous; | |
523 | ||
524 | BUG_ON(which >= osd_req->r_num_ops); | |
525 | op = &osd_req->r_ops[which]; | |
526 | previous = op->extent.length; | |
e5975c7c AE |
527 | |
528 | if (length == previous) | |
529 | return; /* Nothing to do */ | |
530 | BUG_ON(length > previous); | |
531 | ||
532 | op->extent.length = length; | |
de2aa102 | 533 | op->indata_len -= previous - length; |
e5975c7c AE |
534 | } |
535 | EXPORT_SYMBOL(osd_req_op_extent_update); | |
536 | ||
2c63f49a YZ |
537 | void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, |
538 | unsigned int which, u64 offset_inc) | |
539 | { | |
540 | struct ceph_osd_req_op *op, *prev_op; | |
541 | ||
542 | BUG_ON(which + 1 >= osd_req->r_num_ops); | |
543 | ||
544 | prev_op = &osd_req->r_ops[which]; | |
545 | op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); | |
546 | /* dup previous one */ | |
547 | op->indata_len = prev_op->indata_len; | |
548 | op->outdata_len = prev_op->outdata_len; | |
549 | op->extent = prev_op->extent; | |
550 | /* adjust offset */ | |
551 | op->extent.offset += offset_inc; | |
552 | op->extent.length -= offset_inc; | |
553 | ||
554 | if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) | |
555 | op->indata_len -= offset_inc; | |
556 | } | |
557 | EXPORT_SYMBOL(osd_req_op_extent_dup_last); | |
558 | ||
c99d2d4a | 559 | void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, |
04017e29 | 560 | u16 opcode, const char *class, const char *method) |
33803f33 | 561 | { |
144cba14 YZ |
562 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
563 | opcode, 0); | |
5f562df5 | 564 | struct ceph_pagelist *pagelist; |
33803f33 AE |
565 | size_t payload_len = 0; |
566 | size_t size; | |
567 | ||
568 | BUG_ON(opcode != CEPH_OSD_OP_CALL); | |
569 | ||
5f562df5 AE |
570 | pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); |
571 | BUG_ON(!pagelist); | |
572 | ceph_pagelist_init(pagelist); | |
573 | ||
33803f33 AE |
574 | op->cls.class_name = class; |
575 | size = strlen(class); | |
576 | BUG_ON(size > (size_t) U8_MAX); | |
577 | op->cls.class_len = size; | |
5f562df5 | 578 | ceph_pagelist_append(pagelist, class, size); |
33803f33 AE |
579 | payload_len += size; |
580 | ||
581 | op->cls.method_name = method; | |
582 | size = strlen(method); | |
583 | BUG_ON(size > (size_t) U8_MAX); | |
584 | op->cls.method_len = size; | |
5f562df5 | 585 | ceph_pagelist_append(pagelist, method, size); |
33803f33 AE |
586 | payload_len += size; |
587 | ||
a4ce40a9 | 588 | osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); |
5f562df5 | 589 | |
33803f33 AE |
590 | op->cls.argc = 0; /* currently unused */ |
591 | ||
de2aa102 | 592 | op->indata_len = payload_len; |
33803f33 AE |
593 | } |
594 | EXPORT_SYMBOL(osd_req_op_cls_init); | |
8c042b0d | 595 | |
d74b50be YZ |
596 | int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, |
597 | u16 opcode, const char *name, const void *value, | |
598 | size_t size, u8 cmp_op, u8 cmp_mode) | |
599 | { | |
144cba14 YZ |
600 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
601 | opcode, 0); | |
d74b50be YZ |
602 | struct ceph_pagelist *pagelist; |
603 | size_t payload_len; | |
604 | ||
605 | BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); | |
606 | ||
607 | pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); | |
608 | if (!pagelist) | |
609 | return -ENOMEM; | |
610 | ||
611 | ceph_pagelist_init(pagelist); | |
612 | ||
613 | payload_len = strlen(name); | |
614 | op->xattr.name_len = payload_len; | |
615 | ceph_pagelist_append(pagelist, name, payload_len); | |
616 | ||
617 | op->xattr.value_len = size; | |
618 | ceph_pagelist_append(pagelist, value, size); | |
619 | payload_len += size; | |
620 | ||
621 | op->xattr.cmp_op = cmp_op; | |
622 | op->xattr.cmp_mode = cmp_mode; | |
623 | ||
624 | ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); | |
de2aa102 | 625 | op->indata_len = payload_len; |
d74b50be YZ |
626 | return 0; |
627 | } | |
628 | EXPORT_SYMBOL(osd_req_op_xattr_init); | |
629 | ||
c99d2d4a AE |
630 | void osd_req_op_watch_init(struct ceph_osd_request *osd_req, |
631 | unsigned int which, u16 opcode, | |
33803f33 AE |
632 | u64 cookie, u64 version, int flag) |
633 | { | |
144cba14 YZ |
634 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, |
635 | opcode, 0); | |
33803f33 | 636 | |
c99d2d4a | 637 | BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); |
33803f33 AE |
638 | |
639 | op->watch.cookie = cookie; | |
9ef1ee5a | 640 | op->watch.ver = version; |
33803f33 | 641 | if (opcode == CEPH_OSD_OP_WATCH && flag) |
c99d2d4a | 642 | op->watch.flag = (u8)1; |
33803f33 AE |
643 | } |
644 | EXPORT_SYMBOL(osd_req_op_watch_init); | |
645 | ||
c647b8a8 ID |
646 | void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, |
647 | unsigned int which, | |
648 | u64 expected_object_size, | |
649 | u64 expected_write_size) | |
650 | { | |
651 | struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, | |
144cba14 YZ |
652 | CEPH_OSD_OP_SETALLOCHINT, |
653 | 0); | |
c647b8a8 ID |
654 | |
655 | op->alloc_hint.expected_object_size = expected_object_size; | |
656 | op->alloc_hint.expected_write_size = expected_write_size; | |
657 | ||
658 | /* | |
659 | * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed | |
660 | * not worth a feature bit. Set FAILOK per-op flag to make | |
661 | * sure older osds don't trip over an unsupported opcode. | |
662 | */ | |
663 | op->flags |= CEPH_OSD_OP_FLAG_FAILOK; | |
664 | } | |
665 | EXPORT_SYMBOL(osd_req_op_alloc_hint_init); | |
666 | ||
90af3602 | 667 | static void ceph_osdc_msg_data_add(struct ceph_msg *msg, |
ec9123c5 AE |
668 | struct ceph_osd_data *osd_data) |
669 | { | |
670 | u64 length = ceph_osd_data_length(osd_data); | |
671 | ||
672 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { | |
673 | BUG_ON(length > (u64) SIZE_MAX); | |
674 | if (length) | |
90af3602 | 675 | ceph_msg_data_add_pages(msg, osd_data->pages, |
ec9123c5 AE |
676 | length, osd_data->alignment); |
677 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { | |
678 | BUG_ON(!length); | |
90af3602 | 679 | ceph_msg_data_add_pagelist(msg, osd_data->pagelist); |
ec9123c5 AE |
680 | #ifdef CONFIG_BLOCK |
681 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { | |
90af3602 | 682 | ceph_msg_data_add_bio(msg, osd_data->bio, length); |
ec9123c5 AE |
683 | #endif |
684 | } else { | |
685 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); | |
686 | } | |
687 | } | |
688 | ||
a8dd0a37 | 689 | static u64 osd_req_encode_op(struct ceph_osd_request *req, |
79528734 | 690 | struct ceph_osd_op *dst, unsigned int which) |
a8dd0a37 | 691 | { |
79528734 | 692 | struct ceph_osd_req_op *src; |
04017e29 | 693 | struct ceph_osd_data *osd_data; |
54d50649 | 694 | u64 request_data_len = 0; |
04017e29 | 695 | u64 data_length; |
a8dd0a37 | 696 | |
79528734 AE |
697 | BUG_ON(which >= req->r_num_ops); |
698 | src = &req->r_ops[which]; | |
a8dd0a37 AE |
699 | if (WARN_ON(!osd_req_opcode_valid(src->op))) { |
700 | pr_err("unrecognized osd opcode %d\n", src->op); | |
701 | ||
702 | return 0; | |
703 | } | |
704 | ||
705 | switch (src->op) { | |
706 | case CEPH_OSD_OP_STAT: | |
49719778 AE |
707 | osd_data = &src->raw_data_in; |
708 | ceph_osdc_msg_data_add(req->r_reply, osd_data); | |
a8dd0a37 AE |
709 | break; |
710 | case CEPH_OSD_OP_READ: | |
711 | case CEPH_OSD_OP_WRITE: | |
e30b7577 | 712 | case CEPH_OSD_OP_WRITEFULL: |
ad7a60de | 713 | case CEPH_OSD_OP_ZERO: |
ad7a60de | 714 | case CEPH_OSD_OP_TRUNCATE: |
e30b7577 ID |
715 | if (src->op == CEPH_OSD_OP_WRITE || |
716 | src->op == CEPH_OSD_OP_WRITEFULL) | |
54d50649 | 717 | request_data_len = src->extent.length; |
a8dd0a37 AE |
718 | dst->extent.offset = cpu_to_le64(src->extent.offset); |
719 | dst->extent.length = cpu_to_le64(src->extent.length); | |
720 | dst->extent.truncate_size = | |
721 | cpu_to_le64(src->extent.truncate_size); | |
722 | dst->extent.truncate_seq = | |
723 | cpu_to_le32(src->extent.truncate_seq); | |
04017e29 | 724 | osd_data = &src->extent.osd_data; |
e30b7577 ID |
725 | if (src->op == CEPH_OSD_OP_WRITE || |
726 | src->op == CEPH_OSD_OP_WRITEFULL) | |
04017e29 | 727 | ceph_osdc_msg_data_add(req->r_request, osd_data); |
5476492f | 728 | else |
04017e29 | 729 | ceph_osdc_msg_data_add(req->r_reply, osd_data); |
a8dd0a37 AE |
730 | break; |
731 | case CEPH_OSD_OP_CALL: | |
a8dd0a37 AE |
732 | dst->cls.class_len = src->cls.class_len; |
733 | dst->cls.method_len = src->cls.method_len; | |
04017e29 AE |
734 | osd_data = &src->cls.request_info; |
735 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
736 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); | |
737 | request_data_len = osd_data->pagelist->length; | |
738 | ||
739 | osd_data = &src->cls.request_data; | |
740 | data_length = ceph_osd_data_length(osd_data); | |
741 | if (data_length) { | |
742 | BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); | |
743 | dst->cls.indata_len = cpu_to_le32(data_length); | |
744 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
de2aa102 | 745 | src->indata_len += data_length; |
04017e29 AE |
746 | request_data_len += data_length; |
747 | } | |
748 | osd_data = &src->cls.response_data; | |
749 | ceph_osdc_msg_data_add(req->r_reply, osd_data); | |
a8dd0a37 AE |
750 | break; |
751 | case CEPH_OSD_OP_STARTSYNC: | |
752 | break; | |
753 | case CEPH_OSD_OP_NOTIFY_ACK: | |
754 | case CEPH_OSD_OP_WATCH: | |
755 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
756 | dst->watch.ver = cpu_to_le64(src->watch.ver); | |
757 | dst->watch.flag = src->watch.flag; | |
758 | break; | |
c647b8a8 ID |
759 | case CEPH_OSD_OP_SETALLOCHINT: |
760 | dst->alloc_hint.expected_object_size = | |
761 | cpu_to_le64(src->alloc_hint.expected_object_size); | |
762 | dst->alloc_hint.expected_write_size = | |
763 | cpu_to_le64(src->alloc_hint.expected_write_size); | |
764 | break; | |
d74b50be YZ |
765 | case CEPH_OSD_OP_SETXATTR: |
766 | case CEPH_OSD_OP_CMPXATTR: | |
767 | dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); | |
768 | dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); | |
769 | dst->xattr.cmp_op = src->xattr.cmp_op; | |
770 | dst->xattr.cmp_mode = src->xattr.cmp_mode; | |
771 | osd_data = &src->xattr.osd_data; | |
772 | ceph_osdc_msg_data_add(req->r_request, osd_data); | |
773 | request_data_len = osd_data->pagelist->length; | |
774 | break; | |
864e9197 YZ |
775 | case CEPH_OSD_OP_CREATE: |
776 | case CEPH_OSD_OP_DELETE: | |
777 | break; | |
a8dd0a37 | 778 | default: |
4c46459c | 779 | pr_err("unsupported osd opcode %s\n", |
8f63ca2d | 780 | ceph_osd_op_name(src->op)); |
4c46459c | 781 | WARN_ON(1); |
a8dd0a37 AE |
782 | |
783 | return 0; | |
68b4476b | 784 | } |
7b25bf5f | 785 | |
a8dd0a37 | 786 | dst->op = cpu_to_le16(src->op); |
7b25bf5f | 787 | dst->flags = cpu_to_le32(src->flags); |
de2aa102 | 788 | dst->payload_len = cpu_to_le32(src->indata_len); |
175face2 | 789 | |
54d50649 | 790 | return request_data_len; |
68b4476b YS |
791 | } |
792 | ||
3499e8a5 YS |
793 | /* |
794 | * build new request AND message, calculate layout, and adjust file | |
795 | * extent as needed. | |
796 | * | |
797 | * if the file was recently truncated, we include information about its | |
798 | * old and new size so that the object can be updated appropriately. (we | |
799 | * avoid synchronously deleting truncated objects because it's slow.) | |
800 | * | |
801 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
802 | * data quickly. | |
803 | */ | |
804 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
805 | struct ceph_file_layout *layout, | |
806 | struct ceph_vino vino, | |
715e4cd4 YZ |
807 | u64 off, u64 *plen, |
808 | unsigned int which, int num_ops, | |
3499e8a5 YS |
809 | int opcode, int flags, |
810 | struct ceph_snap_context *snapc, | |
3499e8a5 YS |
811 | u32 truncate_seq, |
812 | u64 truncate_size, | |
153e5167 | 813 | bool use_mempool) |
3499e8a5 | 814 | { |
68b4476b | 815 | struct ceph_osd_request *req; |
75d1c941 AE |
816 | u64 objnum = 0; |
817 | u64 objoff = 0; | |
818 | u64 objlen = 0; | |
6816282d | 819 | int r; |
68b4476b | 820 | |
ad7a60de | 821 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && |
864e9197 YZ |
822 | opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && |
823 | opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); | |
68b4476b | 824 | |
acead002 | 825 | req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, |
ae7ca4a3 | 826 | GFP_NOFS); |
4ad12621 | 827 | if (!req) |
6816282d | 828 | return ERR_PTR(-ENOMEM); |
79528734 | 829 | |
d178a9e7 | 830 | req->r_flags = flags; |
3499e8a5 YS |
831 | |
832 | /* calculate max write size */ | |
a19dadfb | 833 | r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); |
3ff5f385 AE |
834 | if (r < 0) { |
835 | ceph_osdc_put_request(req); | |
6816282d | 836 | return ERR_PTR(r); |
3ff5f385 | 837 | } |
a19dadfb | 838 | |
864e9197 | 839 | if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { |
144cba14 | 840 | osd_req_op_init(req, which, opcode, 0); |
864e9197 YZ |
841 | } else { |
842 | u32 object_size = le32_to_cpu(layout->fl_object_size); | |
843 | u32 object_base = off - objoff; | |
844 | if (!(truncate_seq == 1 && truncate_size == -1ULL)) { | |
845 | if (truncate_size <= object_base) { | |
846 | truncate_size = 0; | |
847 | } else { | |
848 | truncate_size -= object_base; | |
849 | if (truncate_size > object_size) | |
850 | truncate_size = object_size; | |
851 | } | |
ccca4e37 | 852 | } |
715e4cd4 | 853 | osd_req_op_extent_init(req, which, opcode, objoff, objlen, |
864e9197 YZ |
854 | truncate_size, truncate_seq); |
855 | } | |
d18d1e28 | 856 | |
3c972c95 | 857 | req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); |
3499e8a5 | 858 | |
3c972c95 | 859 | snprintf(req->r_base_oid.name, sizeof(req->r_base_oid.name), |
4295f221 | 860 | "%llx.%08llx", vino.ino, objnum); |
3c972c95 | 861 | req->r_base_oid.name_len = strlen(req->r_base_oid.name); |
dbe0fc41 | 862 | |
f24e9980 SW |
863 | return req; |
864 | } | |
3d14c5d2 | 865 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
866 | |
867 | /* | |
868 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
869 | */ | |
870 | static void __insert_request(struct ceph_osd_client *osdc, | |
871 | struct ceph_osd_request *new) | |
872 | { | |
873 | struct rb_node **p = &osdc->requests.rb_node; | |
874 | struct rb_node *parent = NULL; | |
875 | struct ceph_osd_request *req = NULL; | |
876 | ||
877 | while (*p) { | |
878 | parent = *p; | |
879 | req = rb_entry(parent, struct ceph_osd_request, r_node); | |
880 | if (new->r_tid < req->r_tid) | |
881 | p = &(*p)->rb_left; | |
882 | else if (new->r_tid > req->r_tid) | |
883 | p = &(*p)->rb_right; | |
884 | else | |
885 | BUG(); | |
886 | } | |
887 | ||
888 | rb_link_node(&new->r_node, parent, p); | |
889 | rb_insert_color(&new->r_node, &osdc->requests); | |
890 | } | |
891 | ||
892 | static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, | |
893 | u64 tid) | |
894 | { | |
895 | struct ceph_osd_request *req; | |
896 | struct rb_node *n = osdc->requests.rb_node; | |
897 | ||
898 | while (n) { | |
899 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
900 | if (tid < req->r_tid) | |
901 | n = n->rb_left; | |
902 | else if (tid > req->r_tid) | |
903 | n = n->rb_right; | |
904 | else | |
905 | return req; | |
906 | } | |
907 | return NULL; | |
908 | } | |
909 | ||
910 | static struct ceph_osd_request * | |
911 | __lookup_request_ge(struct ceph_osd_client *osdc, | |
912 | u64 tid) | |
913 | { | |
914 | struct ceph_osd_request *req; | |
915 | struct rb_node *n = osdc->requests.rb_node; | |
916 | ||
917 | while (n) { | |
918 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
919 | if (tid < req->r_tid) { | |
920 | if (!n->rb_left) | |
921 | return req; | |
922 | n = n->rb_left; | |
923 | } else if (tid > req->r_tid) { | |
924 | n = n->rb_right; | |
925 | } else { | |
926 | return req; | |
927 | } | |
928 | } | |
929 | return NULL; | |
930 | } | |
931 | ||
2cc6128a ID |
932 | static void __kick_linger_request(struct ceph_osd_request *req) |
933 | { | |
934 | struct ceph_osd_client *osdc = req->r_osdc; | |
935 | struct ceph_osd *osd = req->r_osd; | |
936 | ||
937 | /* | |
938 | * Linger requests need to be resent with a new tid to avoid | |
939 | * the dup op detection logic on the OSDs. Achieve this with | |
940 | * a re-register dance instead of open-coding. | |
941 | */ | |
942 | ceph_osdc_get_request(req); | |
943 | if (!list_empty(&req->r_linger_item)) | |
944 | __unregister_linger_request(osdc, req); | |
945 | else | |
946 | __unregister_request(osdc, req); | |
947 | __register_request(osdc, req); | |
948 | ceph_osdc_put_request(req); | |
949 | ||
950 | /* | |
951 | * Unless request has been registered as both normal and | |
952 | * lingering, __unregister{,_linger}_request clears r_osd. | |
953 | * However, here we need to preserve r_osd to make sure we | |
954 | * requeue on the same OSD. | |
955 | */ | |
956 | WARN_ON(req->r_osd || !osd); | |
957 | req->r_osd = osd; | |
958 | ||
959 | dout("%s requeueing %p tid %llu\n", __func__, req, req->r_tid); | |
960 | __enqueue_request(req); | |
961 | } | |
962 | ||
6f6c7006 SW |
963 | /* |
964 | * Resubmit requests pending on the given osd. | |
965 | */ | |
966 | static void __kick_osd_requests(struct ceph_osd_client *osdc, | |
967 | struct ceph_osd *osd) | |
968 | { | |
a40c4f10 | 969 | struct ceph_osd_request *req, *nreq; |
e02493c0 | 970 | LIST_HEAD(resend); |
2cc6128a | 971 | LIST_HEAD(resend_linger); |
6f6c7006 SW |
972 | int err; |
973 | ||
2cc6128a | 974 | dout("%s osd%d\n", __func__, osd->o_osd); |
6f6c7006 | 975 | err = __reset_osd(osdc, osd); |
685a7555 | 976 | if (err) |
6f6c7006 | 977 | return; |
2cc6128a | 978 | |
e02493c0 AE |
979 | /* |
980 | * Build up a list of requests to resend by traversing the | |
981 | * osd's list of requests. Requests for a given object are | |
982 | * sent in tid order, and that is also the order they're | |
983 | * kept on this list. Therefore all requests that are in | |
984 | * flight will be found first, followed by all requests that | |
985 | * have not yet been sent. And to resend requests while | |
986 | * preserving this order we will want to put any sent | |
987 | * requests back on the front of the osd client's unsent | |
988 | * list. | |
989 | * | |
990 | * So we build a separate ordered list of already-sent | |
991 | * requests for the affected osd and splice it onto the | |
992 | * front of the osd client's unsent list. Once we've seen a | |
993 | * request that has not yet been sent we're done. Those | |
994 | * requests are already sitting right where they belong. | |
995 | */ | |
6f6c7006 | 996 | list_for_each_entry(req, &osd->o_requests, r_osd_item) { |
e02493c0 AE |
997 | if (!req->r_sent) |
998 | break; | |
2cc6128a ID |
999 | |
1000 | if (!req->r_linger) { | |
1001 | dout("%s requeueing %p tid %llu\n", __func__, req, | |
1002 | req->r_tid); | |
1003 | list_move_tail(&req->r_req_lru_item, &resend); | |
a40c4f10 | 1004 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
2cc6128a ID |
1005 | } else { |
1006 | list_move_tail(&req->r_req_lru_item, &resend_linger); | |
1007 | } | |
a40c4f10 | 1008 | } |
e02493c0 | 1009 | list_splice(&resend, &osdc->req_unsent); |
a40c4f10 | 1010 | |
e02493c0 | 1011 | /* |
2cc6128a ID |
1012 | * Both registered and not yet registered linger requests are |
1013 | * enqueued with a new tid on the same OSD. We add/move them | |
1014 | * to req_unsent/o_requests at the end to keep things in tid | |
1015 | * order. | |
e02493c0 | 1016 | */ |
a40c4f10 | 1017 | list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, |
1d0326b1 | 1018 | r_linger_osd_item) { |
2cc6128a ID |
1019 | WARN_ON(!list_empty(&req->r_req_lru_item)); |
1020 | __kick_linger_request(req); | |
6f6c7006 | 1021 | } |
2cc6128a ID |
1022 | |
1023 | list_for_each_entry_safe(req, nreq, &resend_linger, r_req_lru_item) | |
1024 | __kick_linger_request(req); | |
6f6c7006 SW |
1025 | } |
1026 | ||
f24e9980 | 1027 | /* |
81b024e7 | 1028 | * If the osd connection drops, we need to resubmit all requests. |
f24e9980 SW |
1029 | */ |
1030 | static void osd_reset(struct ceph_connection *con) | |
1031 | { | |
1032 | struct ceph_osd *osd = con->private; | |
1033 | struct ceph_osd_client *osdc; | |
1034 | ||
1035 | if (!osd) | |
1036 | return; | |
1037 | dout("osd_reset osd%d\n", osd->o_osd); | |
1038 | osdc = osd->o_osdc; | |
f24e9980 | 1039 | down_read(&osdc->map_sem); |
83aff95e SW |
1040 | mutex_lock(&osdc->request_mutex); |
1041 | __kick_osd_requests(osdc, osd); | |
f9d25199 | 1042 | __send_queued(osdc); |
83aff95e | 1043 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1044 | up_read(&osdc->map_sem); |
1045 | } | |
1046 | ||
1047 | /* | |
1048 | * Track open sessions with osds. | |
1049 | */ | |
e10006f8 | 1050 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
1051 | { |
1052 | struct ceph_osd *osd; | |
1053 | ||
1054 | osd = kzalloc(sizeof(*osd), GFP_NOFS); | |
1055 | if (!osd) | |
1056 | return NULL; | |
1057 | ||
1058 | atomic_set(&osd->o_ref, 1); | |
1059 | osd->o_osdc = osdc; | |
e10006f8 | 1060 | osd->o_osd = onum; |
f407731d | 1061 | RB_CLEAR_NODE(&osd->o_node); |
f24e9980 | 1062 | INIT_LIST_HEAD(&osd->o_requests); |
a40c4f10 | 1063 | INIT_LIST_HEAD(&osd->o_linger_requests); |
f5a2041b | 1064 | INIT_LIST_HEAD(&osd->o_osd_lru); |
f24e9980 SW |
1065 | osd->o_incarnation = 1; |
1066 | ||
b7a9e5dd | 1067 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 1068 | |
422d2cb8 | 1069 | INIT_LIST_HEAD(&osd->o_keepalive_item); |
f24e9980 SW |
1070 | return osd; |
1071 | } | |
1072 | ||
1073 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
1074 | { | |
1075 | if (atomic_inc_not_zero(&osd->o_ref)) { | |
1076 | dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, | |
1077 | atomic_read(&osd->o_ref)); | |
1078 | return osd; | |
1079 | } else { | |
1080 | dout("get_osd %p FAIL\n", osd); | |
1081 | return NULL; | |
1082 | } | |
1083 | } | |
1084 | ||
1085 | static void put_osd(struct ceph_osd *osd) | |
1086 | { | |
1087 | dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), | |
1088 | atomic_read(&osd->o_ref) - 1); | |
b28ec2f3 | 1089 | if (atomic_dec_and_test(&osd->o_ref)) { |
b28ec2f3 | 1090 | if (osd->o_auth.authorizer) |
6c1ea260 | 1091 | ceph_auth_destroy_authorizer(osd->o_auth.authorizer); |
f24e9980 | 1092 | kfree(osd); |
79494d1b | 1093 | } |
f24e9980 SW |
1094 | } |
1095 | ||
1096 | /* | |
1097 | * remove an osd from our map | |
1098 | */ | |
f5a2041b | 1099 | static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 1100 | { |
7eb71e03 | 1101 | dout("%s %p osd%d\n", __func__, osd, osd->o_osd); |
cc9f1f51 ID |
1102 | WARN_ON(!list_empty(&osd->o_requests)); |
1103 | WARN_ON(!list_empty(&osd->o_linger_requests)); | |
7c6e6fc5 | 1104 | |
f5a2041b | 1105 | list_del_init(&osd->o_osd_lru); |
7eb71e03 ID |
1106 | rb_erase(&osd->o_node, &osdc->osds); |
1107 | RB_CLEAR_NODE(&osd->o_node); | |
1108 | } | |
1109 | ||
1110 | static void remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) | |
1111 | { | |
1112 | dout("%s %p osd%d\n", __func__, osd, osd->o_osd); | |
1113 | ||
1114 | if (!RB_EMPTY_NODE(&osd->o_node)) { | |
1115 | ceph_con_close(&osd->o_con); | |
1116 | __remove_osd(osdc, osd); | |
1117 | put_osd(osd); | |
1118 | } | |
f24e9980 SW |
1119 | } |
1120 | ||
aca420bc SW |
1121 | static void remove_all_osds(struct ceph_osd_client *osdc) |
1122 | { | |
048a9d2d | 1123 | dout("%s %p\n", __func__, osdc); |
aca420bc SW |
1124 | mutex_lock(&osdc->request_mutex); |
1125 | while (!RB_EMPTY_ROOT(&osdc->osds)) { | |
1126 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
1127 | struct ceph_osd, o_node); | |
7eb71e03 | 1128 | remove_osd(osdc, osd); |
aca420bc SW |
1129 | } |
1130 | mutex_unlock(&osdc->request_mutex); | |
1131 | } | |
1132 | ||
f5a2041b YS |
1133 | static void __move_osd_to_lru(struct ceph_osd_client *osdc, |
1134 | struct ceph_osd *osd) | |
1135 | { | |
bbf37ec3 | 1136 | dout("%s %p\n", __func__, osd); |
f5a2041b | 1137 | BUG_ON(!list_empty(&osd->o_osd_lru)); |
bbf37ec3 | 1138 | |
f5a2041b | 1139 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); |
a319bf56 | 1140 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; |
f5a2041b YS |
1141 | } |
1142 | ||
bbf37ec3 ID |
1143 | static void maybe_move_osd_to_lru(struct ceph_osd_client *osdc, |
1144 | struct ceph_osd *osd) | |
1145 | { | |
1146 | dout("%s %p\n", __func__, osd); | |
1147 | ||
1148 | if (list_empty(&osd->o_requests) && | |
1149 | list_empty(&osd->o_linger_requests)) | |
1150 | __move_osd_to_lru(osdc, osd); | |
1151 | } | |
1152 | ||
f5a2041b YS |
1153 | static void __remove_osd_from_lru(struct ceph_osd *osd) |
1154 | { | |
1155 | dout("__remove_osd_from_lru %p\n", osd); | |
1156 | if (!list_empty(&osd->o_osd_lru)) | |
1157 | list_del_init(&osd->o_osd_lru); | |
1158 | } | |
1159 | ||
aca420bc | 1160 | static void remove_old_osds(struct ceph_osd_client *osdc) |
f5a2041b YS |
1161 | { |
1162 | struct ceph_osd *osd, *nosd; | |
1163 | ||
1164 | dout("__remove_old_osds %p\n", osdc); | |
1165 | mutex_lock(&osdc->request_mutex); | |
1166 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { | |
aca420bc | 1167 | if (time_before(jiffies, osd->lru_ttl)) |
f5a2041b | 1168 | break; |
7eb71e03 | 1169 | remove_osd(osdc, osd); |
f5a2041b YS |
1170 | } |
1171 | mutex_unlock(&osdc->request_mutex); | |
1172 | } | |
1173 | ||
f24e9980 SW |
1174 | /* |
1175 | * reset osd connect | |
1176 | */ | |
f5a2041b | 1177 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 1178 | { |
c3acb181 | 1179 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 1180 | |
f5a2041b | 1181 | dout("__reset_osd %p osd%d\n", osd, osd->o_osd); |
a40c4f10 YS |
1182 | if (list_empty(&osd->o_requests) && |
1183 | list_empty(&osd->o_linger_requests)) { | |
7eb71e03 | 1184 | remove_osd(osdc, osd); |
c3acb181 AE |
1185 | return -ENODEV; |
1186 | } | |
1187 | ||
1188 | peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; | |
1189 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && | |
1190 | !ceph_con_opened(&osd->o_con)) { | |
1191 | struct ceph_osd_request *req; | |
1192 | ||
0b4af2e8 ID |
1193 | dout("osd addr hasn't changed and connection never opened, " |
1194 | "letting msgr retry\n"); | |
87b315a5 SW |
1195 | /* touch each r_stamp for handle_timeout()'s benfit */ |
1196 | list_for_each_entry(req, &osd->o_requests, r_osd_item) | |
1197 | req->r_stamp = jiffies; | |
c3acb181 AE |
1198 | |
1199 | return -EAGAIN; | |
f24e9980 | 1200 | } |
c3acb181 AE |
1201 | |
1202 | ceph_con_close(&osd->o_con); | |
1203 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
1204 | osd->o_incarnation++; | |
1205 | ||
1206 | return 0; | |
f24e9980 SW |
1207 | } |
1208 | ||
1209 | static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) | |
1210 | { | |
1211 | struct rb_node **p = &osdc->osds.rb_node; | |
1212 | struct rb_node *parent = NULL; | |
1213 | struct ceph_osd *osd = NULL; | |
1214 | ||
aca420bc | 1215 | dout("__insert_osd %p osd%d\n", new, new->o_osd); |
f24e9980 SW |
1216 | while (*p) { |
1217 | parent = *p; | |
1218 | osd = rb_entry(parent, struct ceph_osd, o_node); | |
1219 | if (new->o_osd < osd->o_osd) | |
1220 | p = &(*p)->rb_left; | |
1221 | else if (new->o_osd > osd->o_osd) | |
1222 | p = &(*p)->rb_right; | |
1223 | else | |
1224 | BUG(); | |
1225 | } | |
1226 | ||
1227 | rb_link_node(&new->o_node, parent, p); | |
1228 | rb_insert_color(&new->o_node, &osdc->osds); | |
1229 | } | |
1230 | ||
1231 | static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) | |
1232 | { | |
1233 | struct ceph_osd *osd; | |
1234 | struct rb_node *n = osdc->osds.rb_node; | |
1235 | ||
1236 | while (n) { | |
1237 | osd = rb_entry(n, struct ceph_osd, o_node); | |
1238 | if (o < osd->o_osd) | |
1239 | n = n->rb_left; | |
1240 | else if (o > osd->o_osd) | |
1241 | n = n->rb_right; | |
1242 | else | |
1243 | return osd; | |
1244 | } | |
1245 | return NULL; | |
1246 | } | |
1247 | ||
422d2cb8 YS |
1248 | static void __schedule_osd_timeout(struct ceph_osd_client *osdc) |
1249 | { | |
1250 | schedule_delayed_work(&osdc->timeout_work, | |
a319bf56 | 1251 | osdc->client->options->osd_keepalive_timeout); |
422d2cb8 YS |
1252 | } |
1253 | ||
1254 | static void __cancel_osd_timeout(struct ceph_osd_client *osdc) | |
1255 | { | |
1256 | cancel_delayed_work(&osdc->timeout_work); | |
1257 | } | |
f24e9980 SW |
1258 | |
1259 | /* | |
1260 | * Register request, assign tid. If this is the first request, set up | |
1261 | * the timeout event. | |
1262 | */ | |
a40c4f10 YS |
1263 | static void __register_request(struct ceph_osd_client *osdc, |
1264 | struct ceph_osd_request *req) | |
f24e9980 | 1265 | { |
f24e9980 | 1266 | req->r_tid = ++osdc->last_tid; |
6df058c0 | 1267 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); |
77f38e0e | 1268 | dout("__register_request %p tid %lld\n", req, req->r_tid); |
f24e9980 SW |
1269 | __insert_request(osdc, req); |
1270 | ceph_osdc_get_request(req); | |
1271 | osdc->num_requests++; | |
f24e9980 | 1272 | if (osdc->num_requests == 1) { |
422d2cb8 YS |
1273 | dout(" first request, scheduling timeout\n"); |
1274 | __schedule_osd_timeout(osdc); | |
f24e9980 | 1275 | } |
a40c4f10 YS |
1276 | } |
1277 | ||
f24e9980 SW |
1278 | /* |
1279 | * called under osdc->request_mutex | |
1280 | */ | |
1281 | static void __unregister_request(struct ceph_osd_client *osdc, | |
1282 | struct ceph_osd_request *req) | |
1283 | { | |
35f9f8a0 SW |
1284 | if (RB_EMPTY_NODE(&req->r_node)) { |
1285 | dout("__unregister_request %p tid %lld not registered\n", | |
1286 | req, req->r_tid); | |
1287 | return; | |
1288 | } | |
1289 | ||
f24e9980 SW |
1290 | dout("__unregister_request %p tid %lld\n", req, req->r_tid); |
1291 | rb_erase(&req->r_node, &osdc->requests); | |
6562d661 | 1292 | RB_CLEAR_NODE(&req->r_node); |
f24e9980 SW |
1293 | osdc->num_requests--; |
1294 | ||
0ba6478d SW |
1295 | if (req->r_osd) { |
1296 | /* make sure the original request isn't in flight. */ | |
6740a845 | 1297 | ceph_msg_revoke(req->r_request); |
0ba6478d SW |
1298 | |
1299 | list_del_init(&req->r_osd_item); | |
bbf37ec3 | 1300 | maybe_move_osd_to_lru(osdc, req->r_osd); |
4f23409e | 1301 | if (list_empty(&req->r_linger_osd_item)) |
a40c4f10 | 1302 | req->r_osd = NULL; |
0ba6478d | 1303 | } |
f24e9980 | 1304 | |
7d5f2481 | 1305 | list_del_init(&req->r_req_lru_item); |
f24e9980 SW |
1306 | ceph_osdc_put_request(req); |
1307 | ||
422d2cb8 YS |
1308 | if (osdc->num_requests == 0) { |
1309 | dout(" no requests, canceling timeout\n"); | |
1310 | __cancel_osd_timeout(osdc); | |
f24e9980 SW |
1311 | } |
1312 | } | |
1313 | ||
1314 | /* | |
1315 | * Cancel a previously queued request message | |
1316 | */ | |
1317 | static void __cancel_request(struct ceph_osd_request *req) | |
1318 | { | |
6bc18876 | 1319 | if (req->r_sent && req->r_osd) { |
6740a845 | 1320 | ceph_msg_revoke(req->r_request); |
f24e9980 SW |
1321 | req->r_sent = 0; |
1322 | } | |
1323 | } | |
1324 | ||
a40c4f10 YS |
1325 | static void __register_linger_request(struct ceph_osd_client *osdc, |
1326 | struct ceph_osd_request *req) | |
1327 | { | |
af593064 ID |
1328 | dout("%s %p tid %llu\n", __func__, req, req->r_tid); |
1329 | WARN_ON(!req->r_linger); | |
1330 | ||
96e4dac6 | 1331 | ceph_osdc_get_request(req); |
a40c4f10 | 1332 | list_add_tail(&req->r_linger_item, &osdc->req_linger); |
6194ea89 | 1333 | if (req->r_osd) |
1d0326b1 | 1334 | list_add_tail(&req->r_linger_osd_item, |
6194ea89 | 1335 | &req->r_osd->o_linger_requests); |
a40c4f10 YS |
1336 | } |
1337 | ||
1338 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
1339 | struct ceph_osd_request *req) | |
1340 | { | |
af593064 ID |
1341 | WARN_ON(!req->r_linger); |
1342 | ||
1343 | if (list_empty(&req->r_linger_item)) { | |
1344 | dout("%s %p tid %llu not registered\n", __func__, req, | |
1345 | req->r_tid); | |
1346 | return; | |
1347 | } | |
1348 | ||
1349 | dout("%s %p tid %llu\n", __func__, req, req->r_tid); | |
61c74035 | 1350 | list_del_init(&req->r_linger_item); |
af593064 | 1351 | |
a40c4f10 | 1352 | if (req->r_osd) { |
1d0326b1 | 1353 | list_del_init(&req->r_linger_osd_item); |
bbf37ec3 | 1354 | maybe_move_osd_to_lru(osdc, req->r_osd); |
fbdb9190 SW |
1355 | if (list_empty(&req->r_osd_item)) |
1356 | req->r_osd = NULL; | |
a40c4f10 | 1357 | } |
96e4dac6 | 1358 | ceph_osdc_put_request(req); |
a40c4f10 YS |
1359 | } |
1360 | ||
a40c4f10 YS |
1361 | void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, |
1362 | struct ceph_osd_request *req) | |
1363 | { | |
1364 | if (!req->r_linger) { | |
1365 | dout("set_request_linger %p\n", req); | |
1366 | req->r_linger = 1; | |
a40c4f10 YS |
1367 | } |
1368 | } | |
1369 | EXPORT_SYMBOL(ceph_osdc_set_request_linger); | |
1370 | ||
d29adb34 JD |
1371 | /* |
1372 | * Returns whether a request should be blocked from being sent | |
1373 | * based on the current osdmap and osd_client settings. | |
1374 | * | |
1375 | * Caller should hold map_sem for read. | |
1376 | */ | |
1377 | static bool __req_should_be_paused(struct ceph_osd_client *osdc, | |
1378 | struct ceph_osd_request *req) | |
1379 | { | |
1380 | bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); | |
1381 | bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || | |
1382 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); | |
1383 | return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) || | |
1384 | (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr); | |
1385 | } | |
1386 | ||
17a13e40 ID |
1387 | /* |
1388 | * Calculate mapping of a request to a PG. Takes tiering into account. | |
1389 | */ | |
1390 | static int __calc_request_pg(struct ceph_osdmap *osdmap, | |
1391 | struct ceph_osd_request *req, | |
1392 | struct ceph_pg *pg_out) | |
1393 | { | |
205ee118 ID |
1394 | bool need_check_tiering; |
1395 | ||
1396 | need_check_tiering = false; | |
1397 | if (req->r_target_oloc.pool == -1) { | |
1398 | req->r_target_oloc = req->r_base_oloc; /* struct */ | |
1399 | need_check_tiering = true; | |
1400 | } | |
1401 | if (req->r_target_oid.name_len == 0) { | |
1402 | ceph_oid_copy(&req->r_target_oid, &req->r_base_oid); | |
1403 | need_check_tiering = true; | |
1404 | } | |
1405 | ||
1406 | if (need_check_tiering && | |
1407 | (req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { | |
17a13e40 ID |
1408 | struct ceph_pg_pool_info *pi; |
1409 | ||
205ee118 | 1410 | pi = ceph_pg_pool_by_id(osdmap, req->r_target_oloc.pool); |
17a13e40 ID |
1411 | if (pi) { |
1412 | if ((req->r_flags & CEPH_OSD_FLAG_READ) && | |
1413 | pi->read_tier >= 0) | |
205ee118 | 1414 | req->r_target_oloc.pool = pi->read_tier; |
17a13e40 ID |
1415 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && |
1416 | pi->write_tier >= 0) | |
205ee118 | 1417 | req->r_target_oloc.pool = pi->write_tier; |
17a13e40 ID |
1418 | } |
1419 | /* !pi is caught in ceph_oloc_oid_to_pg() */ | |
1420 | } | |
1421 | ||
205ee118 ID |
1422 | return ceph_oloc_oid_to_pg(osdmap, &req->r_target_oloc, |
1423 | &req->r_target_oid, pg_out); | |
17a13e40 ID |
1424 | } |
1425 | ||
f671b581 ID |
1426 | static void __enqueue_request(struct ceph_osd_request *req) |
1427 | { | |
1428 | struct ceph_osd_client *osdc = req->r_osdc; | |
1429 | ||
1430 | dout("%s %p tid %llu to osd%d\n", __func__, req, req->r_tid, | |
1431 | req->r_osd ? req->r_osd->o_osd : -1); | |
1432 | ||
1433 | if (req->r_osd) { | |
1434 | __remove_osd_from_lru(req->r_osd); | |
1435 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); | |
1436 | list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); | |
1437 | } else { | |
1438 | list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); | |
1439 | } | |
1440 | } | |
1441 | ||
f24e9980 SW |
1442 | /* |
1443 | * Pick an osd (the first 'up' osd in the pg), allocate the osd struct | |
1444 | * (as needed), and set the request r_osd appropriately. If there is | |
25985edc | 1445 | * no up osd, set r_osd to NULL. Move the request to the appropriate list |
6f6c7006 | 1446 | * (unsent, homeless) or leave on in-flight lru. |
f24e9980 SW |
1447 | * |
1448 | * Return 0 if unchanged, 1 if changed, or negative on error. | |
1449 | * | |
1450 | * Caller should hold map_sem for read and request_mutex. | |
1451 | */ | |
6f6c7006 | 1452 | static int __map_request(struct ceph_osd_client *osdc, |
38d6453c | 1453 | struct ceph_osd_request *req, int force_resend) |
f24e9980 | 1454 | { |
5b191d99 | 1455 | struct ceph_pg pgid; |
d85b7056 | 1456 | int acting[CEPH_PG_MAX_SIZE]; |
8008ab10 | 1457 | int num, o; |
f24e9980 | 1458 | int err; |
d29adb34 | 1459 | bool was_paused; |
f24e9980 | 1460 | |
6f6c7006 | 1461 | dout("map_request %p tid %lld\n", req, req->r_tid); |
17a13e40 ID |
1462 | |
1463 | err = __calc_request_pg(osdc->osdmap, req, &pgid); | |
6f6c7006 SW |
1464 | if (err) { |
1465 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f24e9980 | 1466 | return err; |
6f6c7006 | 1467 | } |
7740a42f SW |
1468 | req->r_pgid = pgid; |
1469 | ||
8008ab10 ID |
1470 | num = ceph_calc_pg_acting(osdc->osdmap, pgid, acting, &o); |
1471 | if (num < 0) | |
1472 | num = 0; | |
f24e9980 | 1473 | |
d29adb34 JD |
1474 | was_paused = req->r_paused; |
1475 | req->r_paused = __req_should_be_paused(osdc, req); | |
1476 | if (was_paused && !req->r_paused) | |
1477 | force_resend = 1; | |
1478 | ||
38d6453c SW |
1479 | if ((!force_resend && |
1480 | req->r_osd && req->r_osd->o_osd == o && | |
d85b7056 SW |
1481 | req->r_sent >= req->r_osd->o_incarnation && |
1482 | req->r_num_pg_osds == num && | |
1483 | memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || | |
d29adb34 JD |
1484 | (req->r_osd == NULL && o == -1) || |
1485 | req->r_paused) | |
f24e9980 SW |
1486 | return 0; /* no change */ |
1487 | ||
5b191d99 SW |
1488 | dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", |
1489 | req->r_tid, pgid.pool, pgid.seed, o, | |
f24e9980 SW |
1490 | req->r_osd ? req->r_osd->o_osd : -1); |
1491 | ||
d85b7056 SW |
1492 | /* record full pg acting set */ |
1493 | memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); | |
1494 | req->r_num_pg_osds = num; | |
1495 | ||
f24e9980 SW |
1496 | if (req->r_osd) { |
1497 | __cancel_request(req); | |
1498 | list_del_init(&req->r_osd_item); | |
a390de02 | 1499 | list_del_init(&req->r_linger_osd_item); |
f24e9980 SW |
1500 | req->r_osd = NULL; |
1501 | } | |
1502 | ||
1503 | req->r_osd = __lookup_osd(osdc, o); | |
1504 | if (!req->r_osd && o >= 0) { | |
c99eb1c7 | 1505 | err = -ENOMEM; |
e10006f8 | 1506 | req->r_osd = create_osd(osdc, o); |
6f6c7006 SW |
1507 | if (!req->r_osd) { |
1508 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
c99eb1c7 | 1509 | goto out; |
6f6c7006 | 1510 | } |
f24e9980 | 1511 | |
6f6c7006 | 1512 | dout("map_request osd %p is osd%d\n", req->r_osd, o); |
f24e9980 SW |
1513 | __insert_osd(osdc, req->r_osd); |
1514 | ||
b7a9e5dd SW |
1515 | ceph_con_open(&req->r_osd->o_con, |
1516 | CEPH_ENTITY_TYPE_OSD, o, | |
1517 | &osdc->osdmap->osd_addr[o]); | |
f24e9980 SW |
1518 | } |
1519 | ||
f671b581 | 1520 | __enqueue_request(req); |
d85b7056 | 1521 | err = 1; /* osd or pg changed */ |
f24e9980 SW |
1522 | |
1523 | out: | |
f24e9980 SW |
1524 | return err; |
1525 | } | |
1526 | ||
1527 | /* | |
1528 | * caller should hold map_sem (for read) and request_mutex | |
1529 | */ | |
56e925b6 SW |
1530 | static void __send_request(struct ceph_osd_client *osdc, |
1531 | struct ceph_osd_request *req) | |
f24e9980 | 1532 | { |
1b83bef2 | 1533 | void *p; |
f24e9980 | 1534 | |
1b83bef2 SW |
1535 | dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", |
1536 | req, req->r_tid, req->r_osd->o_osd, req->r_flags, | |
1537 | (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); | |
1538 | ||
1539 | /* fill in message content that changes each time we send it */ | |
1540 | put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); | |
1541 | put_unaligned_le32(req->r_flags, req->r_request_flags); | |
205ee118 | 1542 | put_unaligned_le64(req->r_target_oloc.pool, req->r_request_pool); |
1b83bef2 SW |
1543 | p = req->r_request_pgid; |
1544 | ceph_encode_64(&p, req->r_pgid.pool); | |
1545 | ceph_encode_32(&p, req->r_pgid.seed); | |
1546 | put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ | |
1547 | memcpy(req->r_request_reassert_version, &req->r_reassert_version, | |
1548 | sizeof(req->r_reassert_version)); | |
2169aea6 | 1549 | |
3dd72fc0 | 1550 | req->r_stamp = jiffies; |
07a27e22 | 1551 | list_move_tail(&req->r_req_lru_item, &osdc->req_lru); |
f24e9980 SW |
1552 | |
1553 | ceph_msg_get(req->r_request); /* send consumes a ref */ | |
26be8808 | 1554 | |
f24e9980 | 1555 | req->r_sent = req->r_osd->o_incarnation; |
26be8808 AE |
1556 | |
1557 | ceph_con_send(&req->r_osd->o_con, req->r_request); | |
f24e9980 SW |
1558 | } |
1559 | ||
6f6c7006 SW |
1560 | /* |
1561 | * Send any requests in the queue (req_unsent). | |
1562 | */ | |
f9d25199 | 1563 | static void __send_queued(struct ceph_osd_client *osdc) |
6f6c7006 SW |
1564 | { |
1565 | struct ceph_osd_request *req, *tmp; | |
1566 | ||
f9d25199 AE |
1567 | dout("__send_queued\n"); |
1568 | list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) | |
6f6c7006 | 1569 | __send_request(osdc, req); |
6f6c7006 SW |
1570 | } |
1571 | ||
0bbfdfe8 ID |
1572 | /* |
1573 | * Caller should hold map_sem for read and request_mutex. | |
1574 | */ | |
1575 | static int __ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
1576 | struct ceph_osd_request *req, | |
1577 | bool nofail) | |
1578 | { | |
1579 | int rc; | |
1580 | ||
1581 | __register_request(osdc, req); | |
1582 | req->r_sent = 0; | |
1583 | req->r_got_reply = 0; | |
1584 | rc = __map_request(osdc, req, 0); | |
1585 | if (rc < 0) { | |
1586 | if (nofail) { | |
1587 | dout("osdc_start_request failed map, " | |
1588 | " will retry %lld\n", req->r_tid); | |
1589 | rc = 0; | |
1590 | } else { | |
1591 | __unregister_request(osdc, req); | |
1592 | } | |
1593 | return rc; | |
1594 | } | |
1595 | ||
1596 | if (req->r_osd == NULL) { | |
1597 | dout("send_request %p no up osds in pg\n", req); | |
1598 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1599 | } else { | |
1600 | __send_queued(osdc); | |
1601 | } | |
1602 | ||
1603 | return 0; | |
1604 | } | |
1605 | ||
f24e9980 SW |
1606 | /* |
1607 | * Timeout callback, called every N seconds when 1 or more osd | |
1608 | * requests has been active for more than N seconds. When this | |
1609 | * happens, we ping all OSDs with requests who have timed out to | |
1610 | * ensure any communications channel reset is detected. Reset the | |
1611 | * request timeouts another N seconds in the future as we go. | |
1612 | * Reschedule the timeout event another N seconds in future (unless | |
1613 | * there are no open requests). | |
1614 | */ | |
1615 | static void handle_timeout(struct work_struct *work) | |
1616 | { | |
1617 | struct ceph_osd_client *osdc = | |
1618 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
a319bf56 | 1619 | struct ceph_options *opts = osdc->client->options; |
83aff95e | 1620 | struct ceph_osd_request *req; |
f24e9980 | 1621 | struct ceph_osd *osd; |
422d2cb8 | 1622 | struct list_head slow_osds; |
f24e9980 SW |
1623 | dout("timeout\n"); |
1624 | down_read(&osdc->map_sem); | |
1625 | ||
1626 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1627 | ||
1628 | mutex_lock(&osdc->request_mutex); | |
f24e9980 | 1629 | |
422d2cb8 YS |
1630 | /* |
1631 | * ping osds that are a bit slow. this ensures that if there | |
1632 | * is a break in the TCP connection we will notice, and reopen | |
1633 | * a connection with that osd (from the fault callback). | |
1634 | */ | |
1635 | INIT_LIST_HEAD(&slow_osds); | |
1636 | list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { | |
a319bf56 ID |
1637 | if (time_before(jiffies, |
1638 | req->r_stamp + opts->osd_keepalive_timeout)) | |
422d2cb8 YS |
1639 | break; |
1640 | ||
1641 | osd = req->r_osd; | |
1642 | BUG_ON(!osd); | |
1643 | dout(" tid %llu is slow, will send keepalive on osd%d\n", | |
f24e9980 | 1644 | req->r_tid, osd->o_osd); |
422d2cb8 YS |
1645 | list_move_tail(&osd->o_keepalive_item, &slow_osds); |
1646 | } | |
1647 | while (!list_empty(&slow_osds)) { | |
1648 | osd = list_entry(slow_osds.next, struct ceph_osd, | |
1649 | o_keepalive_item); | |
1650 | list_del_init(&osd->o_keepalive_item); | |
f24e9980 SW |
1651 | ceph_con_keepalive(&osd->o_con); |
1652 | } | |
1653 | ||
422d2cb8 | 1654 | __schedule_osd_timeout(osdc); |
f9d25199 | 1655 | __send_queued(osdc); |
f24e9980 | 1656 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1657 | up_read(&osdc->map_sem); |
1658 | } | |
1659 | ||
f5a2041b YS |
1660 | static void handle_osds_timeout(struct work_struct *work) |
1661 | { | |
1662 | struct ceph_osd_client *osdc = | |
1663 | container_of(work, struct ceph_osd_client, | |
1664 | osds_timeout_work.work); | |
a319bf56 | 1665 | unsigned long delay = osdc->client->options->osd_idle_ttl / 4; |
f5a2041b YS |
1666 | |
1667 | dout("osds timeout\n"); | |
1668 | down_read(&osdc->map_sem); | |
aca420bc | 1669 | remove_old_osds(osdc); |
f5a2041b YS |
1670 | up_read(&osdc->map_sem); |
1671 | ||
1672 | schedule_delayed_work(&osdc->osds_timeout_work, | |
1673 | round_jiffies_relative(delay)); | |
1674 | } | |
1675 | ||
205ee118 ID |
1676 | static int ceph_oloc_decode(void **p, void *end, |
1677 | struct ceph_object_locator *oloc) | |
1678 | { | |
1679 | u8 struct_v, struct_cv; | |
1680 | u32 len; | |
1681 | void *struct_end; | |
1682 | int ret = 0; | |
1683 | ||
1684 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
1685 | struct_v = ceph_decode_8(p); | |
1686 | struct_cv = ceph_decode_8(p); | |
1687 | if (struct_v < 3) { | |
1688 | pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", | |
1689 | struct_v, struct_cv); | |
1690 | goto e_inval; | |
1691 | } | |
1692 | if (struct_cv > 6) { | |
1693 | pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", | |
1694 | struct_v, struct_cv); | |
1695 | goto e_inval; | |
1696 | } | |
1697 | len = ceph_decode_32(p); | |
1698 | ceph_decode_need(p, end, len, e_inval); | |
1699 | struct_end = *p + len; | |
1700 | ||
1701 | oloc->pool = ceph_decode_64(p); | |
1702 | *p += 4; /* skip preferred */ | |
1703 | ||
1704 | len = ceph_decode_32(p); | |
1705 | if (len > 0) { | |
1706 | pr_warn("ceph_object_locator::key is set\n"); | |
1707 | goto e_inval; | |
1708 | } | |
1709 | ||
1710 | if (struct_v >= 5) { | |
1711 | len = ceph_decode_32(p); | |
1712 | if (len > 0) { | |
1713 | pr_warn("ceph_object_locator::nspace is set\n"); | |
1714 | goto e_inval; | |
1715 | } | |
1716 | } | |
1717 | ||
1718 | if (struct_v >= 6) { | |
1719 | s64 hash = ceph_decode_64(p); | |
1720 | if (hash != -1) { | |
1721 | pr_warn("ceph_object_locator::hash is set\n"); | |
1722 | goto e_inval; | |
1723 | } | |
1724 | } | |
1725 | ||
1726 | /* skip the rest */ | |
1727 | *p = struct_end; | |
1728 | out: | |
1729 | return ret; | |
1730 | ||
1731 | e_inval: | |
1732 | ret = -EINVAL; | |
1733 | goto out; | |
1734 | } | |
1735 | ||
1736 | static int ceph_redirect_decode(void **p, void *end, | |
1737 | struct ceph_request_redirect *redir) | |
1738 | { | |
1739 | u8 struct_v, struct_cv; | |
1740 | u32 len; | |
1741 | void *struct_end; | |
1742 | int ret; | |
1743 | ||
1744 | ceph_decode_need(p, end, 1 + 1 + 4, e_inval); | |
1745 | struct_v = ceph_decode_8(p); | |
1746 | struct_cv = ceph_decode_8(p); | |
1747 | if (struct_cv > 1) { | |
1748 | pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", | |
1749 | struct_v, struct_cv); | |
1750 | goto e_inval; | |
1751 | } | |
1752 | len = ceph_decode_32(p); | |
1753 | ceph_decode_need(p, end, len, e_inval); | |
1754 | struct_end = *p + len; | |
1755 | ||
1756 | ret = ceph_oloc_decode(p, end, &redir->oloc); | |
1757 | if (ret) | |
1758 | goto out; | |
1759 | ||
1760 | len = ceph_decode_32(p); | |
1761 | if (len > 0) { | |
1762 | pr_warn("ceph_request_redirect::object_name is set\n"); | |
1763 | goto e_inval; | |
1764 | } | |
1765 | ||
1766 | len = ceph_decode_32(p); | |
1767 | *p += len; /* skip osd_instructions */ | |
1768 | ||
1769 | /* skip the rest */ | |
1770 | *p = struct_end; | |
1771 | out: | |
1772 | return ret; | |
1773 | ||
1774 | e_inval: | |
1775 | ret = -EINVAL; | |
1776 | goto out; | |
1777 | } | |
1778 | ||
25845472 SW |
1779 | static void complete_request(struct ceph_osd_request *req) |
1780 | { | |
25845472 SW |
1781 | complete_all(&req->r_safe_completion); /* fsync waiter */ |
1782 | } | |
1783 | ||
f24e9980 SW |
1784 | /* |
1785 | * handle osd op reply. either call the callback if it is specified, | |
1786 | * or do the completion to wake up the waiting thread. | |
1787 | */ | |
70cf052d | 1788 | static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg) |
f24e9980 | 1789 | { |
1b83bef2 | 1790 | void *p, *end; |
f24e9980 | 1791 | struct ceph_osd_request *req; |
205ee118 | 1792 | struct ceph_request_redirect redir; |
f24e9980 | 1793 | u64 tid; |
1b83bef2 | 1794 | int object_len; |
79528734 AE |
1795 | unsigned int numops; |
1796 | int payload_len, flags; | |
0ceed5db | 1797 | s32 result; |
1b83bef2 SW |
1798 | s32 retry_attempt; |
1799 | struct ceph_pg pg; | |
1800 | int err; | |
1801 | u32 reassert_epoch; | |
1802 | u64 reassert_version; | |
1803 | u32 osdmap_epoch; | |
0d5af164 | 1804 | int already_completed; |
9fc6e064 | 1805 | u32 bytes; |
b0b31a8f | 1806 | u8 decode_redir; |
79528734 | 1807 | unsigned int i; |
f24e9980 | 1808 | |
6df058c0 | 1809 | tid = le64_to_cpu(msg->hdr.tid); |
1b83bef2 SW |
1810 | dout("handle_reply %p tid %llu\n", msg, tid); |
1811 | ||
1812 | p = msg->front.iov_base; | |
1813 | end = p + msg->front.iov_len; | |
1814 | ||
1815 | ceph_decode_need(&p, end, 4, bad); | |
1816 | object_len = ceph_decode_32(&p); | |
1817 | ceph_decode_need(&p, end, object_len, bad); | |
1818 | p += object_len; | |
1819 | ||
ef4859d6 | 1820 | err = ceph_decode_pgid(&p, end, &pg); |
1b83bef2 | 1821 | if (err) |
f24e9980 | 1822 | goto bad; |
1b83bef2 SW |
1823 | |
1824 | ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); | |
1825 | flags = ceph_decode_64(&p); | |
1826 | result = ceph_decode_32(&p); | |
1827 | reassert_epoch = ceph_decode_32(&p); | |
1828 | reassert_version = ceph_decode_64(&p); | |
1829 | osdmap_epoch = ceph_decode_32(&p); | |
1830 | ||
f24e9980 | 1831 | /* lookup */ |
ff513ace | 1832 | down_read(&osdc->map_sem); |
f24e9980 SW |
1833 | mutex_lock(&osdc->request_mutex); |
1834 | req = __lookup_request(osdc, tid); | |
1835 | if (req == NULL) { | |
1836 | dout("handle_reply tid %llu dne\n", tid); | |
8058fd45 | 1837 | goto bad_mutex; |
f24e9980 SW |
1838 | } |
1839 | ceph_osdc_get_request(req); | |
1b83bef2 SW |
1840 | |
1841 | dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, | |
1842 | req, result); | |
1843 | ||
18741196 | 1844 | ceph_decode_need(&p, end, 4, bad_put); |
1b83bef2 | 1845 | numops = ceph_decode_32(&p); |
3f1af42a | 1846 | if (numops > CEPH_OSD_MAX_OPS) |
1b83bef2 SW |
1847 | goto bad_put; |
1848 | if (numops != req->r_num_ops) | |
1849 | goto bad_put; | |
1850 | payload_len = 0; | |
18741196 | 1851 | ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); |
1b83bef2 SW |
1852 | for (i = 0; i < numops; i++) { |
1853 | struct ceph_osd_op *op = p; | |
1854 | int len; | |
1855 | ||
1856 | len = le32_to_cpu(op->payload_len); | |
7665d85b | 1857 | req->r_ops[i].outdata_len = len; |
1b83bef2 SW |
1858 | dout(" op %d has %d bytes\n", i, len); |
1859 | payload_len += len; | |
1860 | p += sizeof(*op); | |
1861 | } | |
9fc6e064 AE |
1862 | bytes = le32_to_cpu(msg->hdr.data_len); |
1863 | if (payload_len != bytes) { | |
b9a67899 JP |
1864 | pr_warn("sum of op payload lens %d != data_len %d\n", |
1865 | payload_len, bytes); | |
1b83bef2 SW |
1866 | goto bad_put; |
1867 | } | |
1868 | ||
18741196 | 1869 | ceph_decode_need(&p, end, 4 + numops * 4, bad_put); |
1b83bef2 SW |
1870 | retry_attempt = ceph_decode_32(&p); |
1871 | for (i = 0; i < numops; i++) | |
7665d85b | 1872 | req->r_ops[i].rval = ceph_decode_32(&p); |
f24e9980 | 1873 | |
205ee118 ID |
1874 | if (le16_to_cpu(msg->hdr.version) >= 6) { |
1875 | p += 8 + 4; /* skip replay_version */ | |
1876 | p += 8; /* skip user_version */ | |
eb845ff1 | 1877 | |
b0b31a8f ID |
1878 | if (le16_to_cpu(msg->hdr.version) >= 7) |
1879 | ceph_decode_8_safe(&p, end, decode_redir, bad_put); | |
1880 | else | |
1881 | decode_redir = 1; | |
1882 | } else { | |
1883 | decode_redir = 0; | |
1884 | } | |
1885 | ||
1886 | if (decode_redir) { | |
205ee118 ID |
1887 | err = ceph_redirect_decode(&p, end, &redir); |
1888 | if (err) | |
1889 | goto bad_put; | |
1890 | } else { | |
1891 | redir.oloc.pool = -1; | |
1892 | } | |
f24e9980 | 1893 | |
205ee118 ID |
1894 | if (redir.oloc.pool != -1) { |
1895 | dout("redirect pool %lld\n", redir.oloc.pool); | |
1896 | ||
1897 | __unregister_request(osdc, req); | |
205ee118 ID |
1898 | |
1899 | req->r_target_oloc = redir.oloc; /* struct */ | |
1900 | ||
1901 | /* | |
1902 | * Start redirect requests with nofail=true. If | |
1903 | * mapping fails, request will end up on the notarget | |
1904 | * list, waiting for the new osdmap (which can take | |
1905 | * a while), even though the original request mapped | |
1906 | * successfully. In the future we might want to follow | |
1907 | * original request's nofail setting here. | |
1908 | */ | |
ff513ace | 1909 | err = __ceph_osdc_start_request(osdc, req, true); |
205ee118 ID |
1910 | BUG_ON(err); |
1911 | ||
ff513ace | 1912 | goto out_unlock; |
205ee118 ID |
1913 | } |
1914 | ||
1915 | already_completed = req->r_got_reply; | |
1916 | if (!req->r_got_reply) { | |
1b83bef2 | 1917 | req->r_result = result; |
f24e9980 SW |
1918 | dout("handle_reply result %d bytes %d\n", req->r_result, |
1919 | bytes); | |
1920 | if (req->r_result == 0) | |
1921 | req->r_result = bytes; | |
1922 | ||
1923 | /* in case this is a write and we need to replay, */ | |
1b83bef2 SW |
1924 | req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); |
1925 | req->r_reassert_version.version = cpu_to_le64(reassert_version); | |
f24e9980 SW |
1926 | |
1927 | req->r_got_reply = 1; | |
1928 | } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { | |
1929 | dout("handle_reply tid %llu dup ack\n", tid); | |
ff513ace | 1930 | goto out_unlock; |
f24e9980 SW |
1931 | } |
1932 | ||
1933 | dout("handle_reply tid %llu flags %d\n", tid, flags); | |
1934 | ||
a40c4f10 YS |
1935 | if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) |
1936 | __register_linger_request(osdc, req); | |
1937 | ||
f24e9980 | 1938 | /* either this is a read, or we got the safe response */ |
0ceed5db SW |
1939 | if (result < 0 || |
1940 | (flags & CEPH_OSD_FLAG_ONDISK) || | |
f24e9980 SW |
1941 | ((flags & CEPH_OSD_FLAG_WRITE) == 0)) |
1942 | __unregister_request(osdc, req); | |
1943 | ||
1944 | mutex_unlock(&osdc->request_mutex); | |
ff513ace | 1945 | up_read(&osdc->map_sem); |
f24e9980 | 1946 | |
eb845ff1 | 1947 | if (!already_completed) { |
61c5d6bf YZ |
1948 | if (req->r_unsafe_callback && |
1949 | result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) | |
1950 | req->r_unsafe_callback(req, true); | |
eb845ff1 YZ |
1951 | if (req->r_callback) |
1952 | req->r_callback(req, msg); | |
1953 | else | |
1954 | complete_all(&req->r_completion); | |
1955 | } | |
f24e9980 | 1956 | |
61c5d6bf YZ |
1957 | if (flags & CEPH_OSD_FLAG_ONDISK) { |
1958 | if (req->r_unsafe_callback && already_completed) | |
1959 | req->r_unsafe_callback(req, false); | |
25845472 | 1960 | complete_request(req); |
61c5d6bf | 1961 | } |
f24e9980 | 1962 | |
ff513ace | 1963 | out: |
a40c4f10 | 1964 | dout("req=%p req->r_linger=%d\n", req, req->r_linger); |
f24e9980 SW |
1965 | ceph_osdc_put_request(req); |
1966 | return; | |
ff513ace ID |
1967 | out_unlock: |
1968 | mutex_unlock(&osdc->request_mutex); | |
1969 | up_read(&osdc->map_sem); | |
1970 | goto out; | |
f24e9980 | 1971 | |
1b83bef2 | 1972 | bad_put: |
37c89bde LW |
1973 | req->r_result = -EIO; |
1974 | __unregister_request(osdc, req); | |
1975 | if (req->r_callback) | |
1976 | req->r_callback(req, msg); | |
1977 | else | |
1978 | complete_all(&req->r_completion); | |
1979 | complete_request(req); | |
1b83bef2 | 1980 | ceph_osdc_put_request(req); |
8058fd45 AE |
1981 | bad_mutex: |
1982 | mutex_unlock(&osdc->request_mutex); | |
ff513ace | 1983 | up_read(&osdc->map_sem); |
f24e9980 | 1984 | bad: |
1b83bef2 SW |
1985 | pr_err("corrupt osd_op_reply got %d %d\n", |
1986 | (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); | |
9ec7cab1 | 1987 | ceph_msg_dump(msg); |
f24e9980 SW |
1988 | } |
1989 | ||
6f6c7006 | 1990 | static void reset_changed_osds(struct ceph_osd_client *osdc) |
f24e9980 | 1991 | { |
f24e9980 | 1992 | struct rb_node *p, *n; |
f24e9980 | 1993 | |
7eb71e03 | 1994 | dout("%s %p\n", __func__, osdc); |
6f6c7006 SW |
1995 | for (p = rb_first(&osdc->osds); p; p = n) { |
1996 | struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); | |
f24e9980 | 1997 | |
6f6c7006 SW |
1998 | n = rb_next(p); |
1999 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
2000 | memcmp(&osd->o_con.peer_addr, | |
2001 | ceph_osd_addr(osdc->osdmap, | |
2002 | osd->o_osd), | |
2003 | sizeof(struct ceph_entity_addr)) != 0) | |
2004 | __reset_osd(osdc, osd); | |
f24e9980 | 2005 | } |
422d2cb8 YS |
2006 | } |
2007 | ||
2008 | /* | |
6f6c7006 SW |
2009 | * Requeue requests whose mapping to an OSD has changed. If requests map to |
2010 | * no osd, request a new map. | |
422d2cb8 | 2011 | * |
e6d50f67 | 2012 | * Caller should hold map_sem for read. |
422d2cb8 | 2013 | */ |
9a1ea2db JD |
2014 | static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, |
2015 | bool force_resend_writes) | |
422d2cb8 | 2016 | { |
a40c4f10 | 2017 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
2018 | struct rb_node *p; |
2019 | int needmap = 0; | |
2020 | int err; | |
9a1ea2db | 2021 | bool force_resend_req; |
422d2cb8 | 2022 | |
9a1ea2db JD |
2023 | dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", |
2024 | force_resend_writes ? " (force resend writes)" : ""); | |
422d2cb8 | 2025 | mutex_lock(&osdc->request_mutex); |
6194ea89 | 2026 | for (p = rb_first(&osdc->requests); p; ) { |
6f6c7006 | 2027 | req = rb_entry(p, struct ceph_osd_request, r_node); |
6194ea89 | 2028 | p = rb_next(p); |
ab60b16d AE |
2029 | |
2030 | /* | |
2031 | * For linger requests that have not yet been | |
2032 | * registered, move them to the linger list; they'll | |
2033 | * be sent to the osd in the loop below. Unregister | |
2034 | * the request before re-registering it as a linger | |
2035 | * request to ensure the __map_request() below | |
2036 | * will decide it needs to be sent. | |
2037 | */ | |
2038 | if (req->r_linger && list_empty(&req->r_linger_item)) { | |
2039 | dout("%p tid %llu restart on osd%d\n", | |
2040 | req, req->r_tid, | |
2041 | req->r_osd ? req->r_osd->o_osd : -1); | |
96e4dac6 | 2042 | ceph_osdc_get_request(req); |
ab60b16d AE |
2043 | __unregister_request(osdc, req); |
2044 | __register_linger_request(osdc, req); | |
96e4dac6 | 2045 | ceph_osdc_put_request(req); |
ab60b16d AE |
2046 | continue; |
2047 | } | |
2048 | ||
9a1ea2db JD |
2049 | force_resend_req = force_resend || |
2050 | (force_resend_writes && | |
2051 | req->r_flags & CEPH_OSD_FLAG_WRITE); | |
2052 | err = __map_request(osdc, req, force_resend_req); | |
6f6c7006 SW |
2053 | if (err < 0) |
2054 | continue; /* error */ | |
2055 | if (req->r_osd == NULL) { | |
2056 | dout("%p tid %llu maps to no osd\n", req, req->r_tid); | |
2057 | needmap++; /* request a newer map */ | |
2058 | } else if (err > 0) { | |
6194ea89 SW |
2059 | if (!req->r_linger) { |
2060 | dout("%p tid %llu requeued on osd%d\n", req, | |
2061 | req->r_tid, | |
2062 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 2063 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
6194ea89 SW |
2064 | } |
2065 | } | |
a40c4f10 YS |
2066 | } |
2067 | ||
2068 | list_for_each_entry_safe(req, nreq, &osdc->req_linger, | |
2069 | r_linger_item) { | |
2070 | dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); | |
2071 | ||
9a1ea2db JD |
2072 | err = __map_request(osdc, req, |
2073 | force_resend || force_resend_writes); | |
ab60b16d | 2074 | dout("__map_request returned %d\n", err); |
a40c4f10 YS |
2075 | if (err < 0) |
2076 | continue; /* hrm! */ | |
b0494532 ID |
2077 | if (req->r_osd == NULL || err > 0) { |
2078 | if (req->r_osd == NULL) { | |
2079 | dout("lingering %p tid %llu maps to no osd\n", | |
2080 | req, req->r_tid); | |
2081 | /* | |
2082 | * A homeless lingering request makes | |
2083 | * no sense, as it's job is to keep | |
2084 | * a particular OSD connection open. | |
2085 | * Request a newer map and kick the | |
2086 | * request, knowing that it won't be | |
2087 | * resent until we actually get a map | |
2088 | * that can tell us where to send it. | |
2089 | */ | |
2090 | needmap++; | |
2091 | } | |
a40c4f10 | 2092 | |
b0494532 ID |
2093 | dout("kicking lingering %p tid %llu osd%d\n", req, |
2094 | req->r_tid, req->r_osd ? req->r_osd->o_osd : -1); | |
2095 | __register_request(osdc, req); | |
2096 | __unregister_linger_request(osdc, req); | |
2097 | } | |
6f6c7006 | 2098 | } |
14d2f38d | 2099 | reset_changed_osds(osdc); |
f24e9980 SW |
2100 | mutex_unlock(&osdc->request_mutex); |
2101 | ||
2102 | if (needmap) { | |
2103 | dout("%d requests for down osds, need new map\n", needmap); | |
2104 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
2105 | } | |
422d2cb8 | 2106 | } |
6f6c7006 SW |
2107 | |
2108 | ||
f24e9980 SW |
2109 | /* |
2110 | * Process updated osd map. | |
2111 | * | |
2112 | * The message contains any number of incremental and full maps, normally | |
2113 | * indicating some sort of topology change in the cluster. Kick requests | |
2114 | * off to different OSDs as needed. | |
2115 | */ | |
2116 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
2117 | { | |
2118 | void *p, *end, *next; | |
2119 | u32 nr_maps, maplen; | |
2120 | u32 epoch; | |
2121 | struct ceph_osdmap *newmap = NULL, *oldmap; | |
2122 | int err; | |
2123 | struct ceph_fsid fsid; | |
9a1ea2db | 2124 | bool was_full; |
f24e9980 SW |
2125 | |
2126 | dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); | |
2127 | p = msg->front.iov_base; | |
2128 | end = p + msg->front.iov_len; | |
2129 | ||
2130 | /* verify fsid */ | |
2131 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
2132 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d SW |
2133 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
2134 | return; | |
f24e9980 SW |
2135 | |
2136 | down_write(&osdc->map_sem); | |
2137 | ||
9a1ea2db JD |
2138 | was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); |
2139 | ||
f24e9980 SW |
2140 | /* incremental maps */ |
2141 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
2142 | dout(" %d inc maps\n", nr_maps); | |
2143 | while (nr_maps > 0) { | |
2144 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
2145 | epoch = ceph_decode_32(&p); |
2146 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
2147 | ceph_decode_need(&p, end, maplen, bad); |
2148 | next = p + maplen; | |
2149 | if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { | |
2150 | dout("applying incremental map %u len %d\n", | |
2151 | epoch, maplen); | |
2152 | newmap = osdmap_apply_incremental(&p, next, | |
2153 | osdc->osdmap, | |
15d9882c | 2154 | &osdc->client->msgr); |
f24e9980 SW |
2155 | if (IS_ERR(newmap)) { |
2156 | err = PTR_ERR(newmap); | |
2157 | goto bad; | |
2158 | } | |
30dc6381 | 2159 | BUG_ON(!newmap); |
f24e9980 SW |
2160 | if (newmap != osdc->osdmap) { |
2161 | ceph_osdmap_destroy(osdc->osdmap); | |
2162 | osdc->osdmap = newmap; | |
2163 | } | |
9a1ea2db JD |
2164 | was_full = was_full || |
2165 | ceph_osdmap_flag(osdc->osdmap, | |
2166 | CEPH_OSDMAP_FULL); | |
2167 | kick_requests(osdc, 0, was_full); | |
f24e9980 SW |
2168 | } else { |
2169 | dout("ignoring incremental map %u len %d\n", | |
2170 | epoch, maplen); | |
2171 | } | |
2172 | p = next; | |
2173 | nr_maps--; | |
2174 | } | |
2175 | if (newmap) | |
2176 | goto done; | |
2177 | ||
2178 | /* full maps */ | |
2179 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
2180 | dout(" %d full maps\n", nr_maps); | |
2181 | while (nr_maps) { | |
2182 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
2183 | epoch = ceph_decode_32(&p); |
2184 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
2185 | ceph_decode_need(&p, end, maplen, bad); |
2186 | if (nr_maps > 1) { | |
2187 | dout("skipping non-latest full map %u len %d\n", | |
2188 | epoch, maplen); | |
2189 | } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { | |
2190 | dout("skipping full map %u len %d, " | |
2191 | "older than our %u\n", epoch, maplen, | |
2192 | osdc->osdmap->epoch); | |
2193 | } else { | |
38d6453c SW |
2194 | int skipped_map = 0; |
2195 | ||
f24e9980 | 2196 | dout("taking full map %u len %d\n", epoch, maplen); |
a2505d63 | 2197 | newmap = ceph_osdmap_decode(&p, p+maplen); |
f24e9980 SW |
2198 | if (IS_ERR(newmap)) { |
2199 | err = PTR_ERR(newmap); | |
2200 | goto bad; | |
2201 | } | |
30dc6381 | 2202 | BUG_ON(!newmap); |
f24e9980 SW |
2203 | oldmap = osdc->osdmap; |
2204 | osdc->osdmap = newmap; | |
38d6453c SW |
2205 | if (oldmap) { |
2206 | if (oldmap->epoch + 1 < newmap->epoch) | |
2207 | skipped_map = 1; | |
f24e9980 | 2208 | ceph_osdmap_destroy(oldmap); |
38d6453c | 2209 | } |
9a1ea2db JD |
2210 | was_full = was_full || |
2211 | ceph_osdmap_flag(osdc->osdmap, | |
2212 | CEPH_OSDMAP_FULL); | |
2213 | kick_requests(osdc, skipped_map, was_full); | |
f24e9980 SW |
2214 | } |
2215 | p += maplen; | |
2216 | nr_maps--; | |
2217 | } | |
2218 | ||
b72e19b9 DC |
2219 | if (!osdc->osdmap) |
2220 | goto bad; | |
f24e9980 SW |
2221 | done: |
2222 | downgrade_write(&osdc->map_sem); | |
82dcabad ID |
2223 | ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, |
2224 | osdc->osdmap->epoch); | |
cd634fb6 SW |
2225 | |
2226 | /* | |
2227 | * subscribe to subsequent osdmap updates if full to ensure | |
2228 | * we find out when we are no longer full and stop returning | |
2229 | * ENOSPC. | |
2230 | */ | |
d29adb34 JD |
2231 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || |
2232 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || | |
2233 | ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) | |
cd634fb6 SW |
2234 | ceph_monc_request_next_osdmap(&osdc->client->monc); |
2235 | ||
f9d25199 AE |
2236 | mutex_lock(&osdc->request_mutex); |
2237 | __send_queued(osdc); | |
2238 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 2239 | up_read(&osdc->map_sem); |
03066f23 | 2240 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
2241 | return; |
2242 | ||
2243 | bad: | |
2244 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 2245 | ceph_msg_dump(msg); |
f24e9980 | 2246 | up_write(&osdc->map_sem); |
f24e9980 SW |
2247 | } |
2248 | ||
a40c4f10 YS |
2249 | /* |
2250 | * watch/notify callback event infrastructure | |
2251 | * | |
2252 | * These callbacks are used both for watch and notify operations. | |
2253 | */ | |
2254 | static void __release_event(struct kref *kref) | |
2255 | { | |
2256 | struct ceph_osd_event *event = | |
2257 | container_of(kref, struct ceph_osd_event, kref); | |
2258 | ||
2259 | dout("__release_event %p\n", event); | |
2260 | kfree(event); | |
2261 | } | |
2262 | ||
2263 | static void get_event(struct ceph_osd_event *event) | |
2264 | { | |
2265 | kref_get(&event->kref); | |
2266 | } | |
2267 | ||
2268 | void ceph_osdc_put_event(struct ceph_osd_event *event) | |
2269 | { | |
2270 | kref_put(&event->kref, __release_event); | |
2271 | } | |
2272 | EXPORT_SYMBOL(ceph_osdc_put_event); | |
2273 | ||
2274 | static void __insert_event(struct ceph_osd_client *osdc, | |
2275 | struct ceph_osd_event *new) | |
2276 | { | |
2277 | struct rb_node **p = &osdc->event_tree.rb_node; | |
2278 | struct rb_node *parent = NULL; | |
2279 | struct ceph_osd_event *event = NULL; | |
2280 | ||
2281 | while (*p) { | |
2282 | parent = *p; | |
2283 | event = rb_entry(parent, struct ceph_osd_event, node); | |
2284 | if (new->cookie < event->cookie) | |
2285 | p = &(*p)->rb_left; | |
2286 | else if (new->cookie > event->cookie) | |
2287 | p = &(*p)->rb_right; | |
2288 | else | |
2289 | BUG(); | |
2290 | } | |
2291 | ||
2292 | rb_link_node(&new->node, parent, p); | |
2293 | rb_insert_color(&new->node, &osdc->event_tree); | |
2294 | } | |
2295 | ||
2296 | static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, | |
2297 | u64 cookie) | |
2298 | { | |
2299 | struct rb_node **p = &osdc->event_tree.rb_node; | |
2300 | struct rb_node *parent = NULL; | |
2301 | struct ceph_osd_event *event = NULL; | |
2302 | ||
2303 | while (*p) { | |
2304 | parent = *p; | |
2305 | event = rb_entry(parent, struct ceph_osd_event, node); | |
2306 | if (cookie < event->cookie) | |
2307 | p = &(*p)->rb_left; | |
2308 | else if (cookie > event->cookie) | |
2309 | p = &(*p)->rb_right; | |
2310 | else | |
2311 | return event; | |
2312 | } | |
2313 | return NULL; | |
2314 | } | |
2315 | ||
2316 | static void __remove_event(struct ceph_osd_event *event) | |
2317 | { | |
2318 | struct ceph_osd_client *osdc = event->osdc; | |
2319 | ||
2320 | if (!RB_EMPTY_NODE(&event->node)) { | |
2321 | dout("__remove_event removed %p\n", event); | |
2322 | rb_erase(&event->node, &osdc->event_tree); | |
2323 | ceph_osdc_put_event(event); | |
2324 | } else { | |
2325 | dout("__remove_event didn't remove %p\n", event); | |
2326 | } | |
2327 | } | |
2328 | ||
2329 | int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
2330 | void (*event_cb)(u64, u64, u8, void *), | |
3c663bbd | 2331 | void *data, struct ceph_osd_event **pevent) |
a40c4f10 YS |
2332 | { |
2333 | struct ceph_osd_event *event; | |
2334 | ||
2335 | event = kmalloc(sizeof(*event), GFP_NOIO); | |
2336 | if (!event) | |
2337 | return -ENOMEM; | |
2338 | ||
2339 | dout("create_event %p\n", event); | |
2340 | event->cb = event_cb; | |
3c663bbd | 2341 | event->one_shot = 0; |
a40c4f10 YS |
2342 | event->data = data; |
2343 | event->osdc = osdc; | |
2344 | INIT_LIST_HEAD(&event->osd_node); | |
3ee5234d | 2345 | RB_CLEAR_NODE(&event->node); |
a40c4f10 YS |
2346 | kref_init(&event->kref); /* one ref for us */ |
2347 | kref_get(&event->kref); /* one ref for the caller */ | |
a40c4f10 YS |
2348 | |
2349 | spin_lock(&osdc->event_lock); | |
2350 | event->cookie = ++osdc->event_count; | |
2351 | __insert_event(osdc, event); | |
2352 | spin_unlock(&osdc->event_lock); | |
2353 | ||
2354 | *pevent = event; | |
2355 | return 0; | |
2356 | } | |
2357 | EXPORT_SYMBOL(ceph_osdc_create_event); | |
2358 | ||
2359 | void ceph_osdc_cancel_event(struct ceph_osd_event *event) | |
2360 | { | |
2361 | struct ceph_osd_client *osdc = event->osdc; | |
2362 | ||
2363 | dout("cancel_event %p\n", event); | |
2364 | spin_lock(&osdc->event_lock); | |
2365 | __remove_event(event); | |
2366 | spin_unlock(&osdc->event_lock); | |
2367 | ceph_osdc_put_event(event); /* caller's */ | |
2368 | } | |
2369 | EXPORT_SYMBOL(ceph_osdc_cancel_event); | |
2370 | ||
2371 | ||
2372 | static void do_event_work(struct work_struct *work) | |
2373 | { | |
2374 | struct ceph_osd_event_work *event_work = | |
2375 | container_of(work, struct ceph_osd_event_work, work); | |
2376 | struct ceph_osd_event *event = event_work->event; | |
2377 | u64 ver = event_work->ver; | |
2378 | u64 notify_id = event_work->notify_id; | |
2379 | u8 opcode = event_work->opcode; | |
2380 | ||
2381 | dout("do_event_work completing %p\n", event); | |
2382 | event->cb(ver, notify_id, opcode, event->data); | |
a40c4f10 YS |
2383 | dout("do_event_work completed %p\n", event); |
2384 | ceph_osdc_put_event(event); | |
2385 | kfree(event_work); | |
2386 | } | |
2387 | ||
2388 | ||
2389 | /* | |
2390 | * Process osd watch notifications | |
2391 | */ | |
3c663bbd AE |
2392 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
2393 | struct ceph_msg *msg) | |
a40c4f10 YS |
2394 | { |
2395 | void *p, *end; | |
2396 | u8 proto_ver; | |
2397 | u64 cookie, ver, notify_id; | |
2398 | u8 opcode; | |
2399 | struct ceph_osd_event *event; | |
2400 | struct ceph_osd_event_work *event_work; | |
2401 | ||
2402 | p = msg->front.iov_base; | |
2403 | end = p + msg->front.iov_len; | |
2404 | ||
2405 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
2406 | ceph_decode_8_safe(&p, end, opcode, bad); | |
2407 | ceph_decode_64_safe(&p, end, cookie, bad); | |
2408 | ceph_decode_64_safe(&p, end, ver, bad); | |
2409 | ceph_decode_64_safe(&p, end, notify_id, bad); | |
2410 | ||
2411 | spin_lock(&osdc->event_lock); | |
2412 | event = __find_event(osdc, cookie); | |
2413 | if (event) { | |
3c663bbd | 2414 | BUG_ON(event->one_shot); |
a40c4f10 | 2415 | get_event(event); |
a40c4f10 YS |
2416 | } |
2417 | spin_unlock(&osdc->event_lock); | |
2418 | dout("handle_watch_notify cookie %lld ver %lld event %p\n", | |
2419 | cookie, ver, event); | |
2420 | if (event) { | |
2421 | event_work = kmalloc(sizeof(*event_work), GFP_NOIO); | |
a40c4f10 | 2422 | if (!event_work) { |
91883cd2 ID |
2423 | pr_err("couldn't allocate event_work\n"); |
2424 | ceph_osdc_put_event(event); | |
2425 | return; | |
a40c4f10 | 2426 | } |
6b0ae409 | 2427 | INIT_WORK(&event_work->work, do_event_work); |
a40c4f10 YS |
2428 | event_work->event = event; |
2429 | event_work->ver = ver; | |
2430 | event_work->notify_id = notify_id; | |
2431 | event_work->opcode = opcode; | |
a40c4f10 | 2432 | |
91883cd2 ID |
2433 | queue_work(osdc->notify_wq, &event_work->work); |
2434 | } | |
a40c4f10 | 2435 | |
a40c4f10 YS |
2436 | return; |
2437 | ||
2438 | bad: | |
2439 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
a40c4f10 YS |
2440 | } |
2441 | ||
e65550fd AE |
2442 | /* |
2443 | * build new request AND message | |
2444 | * | |
2445 | */ | |
2446 | void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, | |
2447 | struct ceph_snap_context *snapc, u64 snap_id, | |
2448 | struct timespec *mtime) | |
2449 | { | |
2450 | struct ceph_msg *msg = req->r_request; | |
2451 | void *p; | |
2452 | size_t msg_size; | |
2453 | int flags = req->r_flags; | |
2454 | u64 data_len; | |
2455 | unsigned int i; | |
2456 | ||
2457 | req->r_snapid = snap_id; | |
2458 | req->r_snapc = ceph_get_snap_context(snapc); | |
2459 | ||
2460 | /* encode request */ | |
2461 | msg->hdr.version = cpu_to_le16(4); | |
2462 | ||
2463 | p = msg->front.iov_base; | |
2464 | ceph_encode_32(&p, 1); /* client_inc is always 1 */ | |
2465 | req->r_request_osdmap_epoch = p; | |
2466 | p += 4; | |
2467 | req->r_request_flags = p; | |
2468 | p += 4; | |
2469 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) | |
2470 | ceph_encode_timespec(p, mtime); | |
2471 | p += sizeof(struct ceph_timespec); | |
2472 | req->r_request_reassert_version = p; | |
2473 | p += sizeof(struct ceph_eversion); /* will get filled in */ | |
2474 | ||
2475 | /* oloc */ | |
2476 | ceph_encode_8(&p, 4); | |
2477 | ceph_encode_8(&p, 4); | |
2478 | ceph_encode_32(&p, 8 + 4 + 4); | |
2479 | req->r_request_pool = p; | |
2480 | p += 8; | |
2481 | ceph_encode_32(&p, -1); /* preferred */ | |
2482 | ceph_encode_32(&p, 0); /* key len */ | |
2483 | ||
2484 | ceph_encode_8(&p, 1); | |
2485 | req->r_request_pgid = p; | |
2486 | p += 8 + 4; | |
2487 | ceph_encode_32(&p, -1); /* preferred */ | |
2488 | ||
2489 | /* oid */ | |
3c972c95 ID |
2490 | ceph_encode_32(&p, req->r_base_oid.name_len); |
2491 | memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len); | |
2492 | dout("oid '%.*s' len %d\n", req->r_base_oid.name_len, | |
2493 | req->r_base_oid.name, req->r_base_oid.name_len); | |
2494 | p += req->r_base_oid.name_len; | |
e65550fd AE |
2495 | |
2496 | /* ops--can imply data */ | |
2497 | ceph_encode_16(&p, (u16)req->r_num_ops); | |
2498 | data_len = 0; | |
2499 | for (i = 0; i < req->r_num_ops; i++) { | |
2500 | data_len += osd_req_encode_op(req, p, i); | |
2501 | p += sizeof(struct ceph_osd_op); | |
2502 | } | |
2503 | ||
2504 | /* snaps */ | |
2505 | ceph_encode_64(&p, req->r_snapid); | |
2506 | ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); | |
2507 | ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); | |
2508 | if (req->r_snapc) { | |
2509 | for (i = 0; i < snapc->num_snaps; i++) { | |
2510 | ceph_encode_64(&p, req->r_snapc->snaps[i]); | |
2511 | } | |
2512 | } | |
2513 | ||
2514 | req->r_request_attempts = p; | |
2515 | p += 4; | |
2516 | ||
2517 | /* data */ | |
2518 | if (flags & CEPH_OSD_FLAG_WRITE) { | |
2519 | u16 data_off; | |
2520 | ||
2521 | /* | |
2522 | * The header "data_off" is a hint to the receiver | |
2523 | * allowing it to align received data into its | |
2524 | * buffers such that there's no need to re-copy | |
2525 | * it before writing it to disk (direct I/O). | |
2526 | */ | |
2527 | data_off = (u16) (off & 0xffff); | |
2528 | req->r_request->hdr.data_off = cpu_to_le16(data_off); | |
2529 | } | |
2530 | req->r_request->hdr.data_len = cpu_to_le32(data_len); | |
2531 | ||
2532 | BUG_ON(p > msg->front.iov_base + msg->front.iov_len); | |
2533 | msg_size = p - msg->front.iov_base; | |
2534 | msg->front.iov_len = msg_size; | |
2535 | msg->hdr.front_len = cpu_to_le32(msg_size); | |
2536 | ||
2537 | dout("build_request msg_size was %d\n", (int)msg_size); | |
2538 | } | |
2539 | EXPORT_SYMBOL(ceph_osdc_build_request); | |
2540 | ||
70636773 AE |
2541 | /* |
2542 | * Register request, send initial attempt. | |
2543 | */ | |
2544 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
2545 | struct ceph_osd_request *req, | |
2546 | bool nofail) | |
2547 | { | |
0bbfdfe8 | 2548 | int rc; |
70636773 | 2549 | |
f24e9980 SW |
2550 | down_read(&osdc->map_sem); |
2551 | mutex_lock(&osdc->request_mutex); | |
0bbfdfe8 ID |
2552 | |
2553 | rc = __ceph_osdc_start_request(osdc, req, nofail); | |
2554 | ||
f24e9980 SW |
2555 | mutex_unlock(&osdc->request_mutex); |
2556 | up_read(&osdc->map_sem); | |
0bbfdfe8 | 2557 | |
f24e9980 SW |
2558 | return rc; |
2559 | } | |
3d14c5d2 | 2560 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 | 2561 | |
c9f9b93d ID |
2562 | /* |
2563 | * Unregister a registered request. The request is not completed (i.e. | |
2564 | * no callbacks or wakeups) - higher layers are supposed to know what | |
2565 | * they are canceling. | |
2566 | */ | |
2567 | void ceph_osdc_cancel_request(struct ceph_osd_request *req) | |
2568 | { | |
2569 | struct ceph_osd_client *osdc = req->r_osdc; | |
2570 | ||
2571 | mutex_lock(&osdc->request_mutex); | |
2572 | if (req->r_linger) | |
2573 | __unregister_linger_request(osdc, req); | |
2574 | __unregister_request(osdc, req); | |
2575 | mutex_unlock(&osdc->request_mutex); | |
2576 | ||
2577 | dout("%s %p tid %llu canceled\n", __func__, req, req->r_tid); | |
2578 | } | |
2579 | EXPORT_SYMBOL(ceph_osdc_cancel_request); | |
2580 | ||
f24e9980 SW |
2581 | /* |
2582 | * wait for a request to complete | |
2583 | */ | |
2584 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
2585 | struct ceph_osd_request *req) | |
2586 | { | |
2587 | int rc; | |
2588 | ||
c9f9b93d ID |
2589 | dout("%s %p tid %llu\n", __func__, req, req->r_tid); |
2590 | ||
f24e9980 SW |
2591 | rc = wait_for_completion_interruptible(&req->r_completion); |
2592 | if (rc < 0) { | |
c9f9b93d ID |
2593 | dout("%s %p tid %llu interrupted\n", __func__, req, req->r_tid); |
2594 | ceph_osdc_cancel_request(req); | |
25845472 | 2595 | complete_request(req); |
f24e9980 SW |
2596 | return rc; |
2597 | } | |
2598 | ||
c9f9b93d ID |
2599 | dout("%s %p tid %llu result %d\n", __func__, req, req->r_tid, |
2600 | req->r_result); | |
f24e9980 SW |
2601 | return req->r_result; |
2602 | } | |
3d14c5d2 | 2603 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
2604 | |
2605 | /* | |
2606 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
2607 | */ | |
2608 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
2609 | { | |
2610 | struct ceph_osd_request *req; | |
2611 | u64 last_tid, next_tid = 0; | |
2612 | ||
2613 | mutex_lock(&osdc->request_mutex); | |
2614 | last_tid = osdc->last_tid; | |
2615 | while (1) { | |
2616 | req = __lookup_request_ge(osdc, next_tid); | |
2617 | if (!req) | |
2618 | break; | |
2619 | if (req->r_tid > last_tid) | |
2620 | break; | |
2621 | ||
2622 | next_tid = req->r_tid + 1; | |
2623 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) | |
2624 | continue; | |
2625 | ||
2626 | ceph_osdc_get_request(req); | |
2627 | mutex_unlock(&osdc->request_mutex); | |
2628 | dout("sync waiting on tid %llu (last is %llu)\n", | |
2629 | req->r_tid, last_tid); | |
2630 | wait_for_completion(&req->r_safe_completion); | |
2631 | mutex_lock(&osdc->request_mutex); | |
2632 | ceph_osdc_put_request(req); | |
2633 | } | |
2634 | mutex_unlock(&osdc->request_mutex); | |
2635 | dout("sync done (thru tid %llu)\n", last_tid); | |
2636 | } | |
3d14c5d2 | 2637 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 | 2638 | |
dd935f44 JD |
2639 | /* |
2640 | * Call all pending notify callbacks - for use after a watch is | |
2641 | * unregistered, to make sure no more callbacks for it will be invoked | |
2642 | */ | |
f6479449 | 2643 | void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) |
dd935f44 JD |
2644 | { |
2645 | flush_workqueue(osdc->notify_wq); | |
2646 | } | |
2647 | EXPORT_SYMBOL(ceph_osdc_flush_notifies); | |
2648 | ||
2649 | ||
f24e9980 SW |
2650 | /* |
2651 | * init, shutdown | |
2652 | */ | |
2653 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
2654 | { | |
2655 | int err; | |
2656 | ||
2657 | dout("init\n"); | |
2658 | osdc->client = client; | |
2659 | osdc->osdmap = NULL; | |
2660 | init_rwsem(&osdc->map_sem); | |
2661 | init_completion(&osdc->map_waiters); | |
2662 | osdc->last_requested_map = 0; | |
2663 | mutex_init(&osdc->request_mutex); | |
f24e9980 SW |
2664 | osdc->last_tid = 0; |
2665 | osdc->osds = RB_ROOT; | |
f5a2041b | 2666 | INIT_LIST_HEAD(&osdc->osd_lru); |
f24e9980 | 2667 | osdc->requests = RB_ROOT; |
422d2cb8 | 2668 | INIT_LIST_HEAD(&osdc->req_lru); |
6f6c7006 SW |
2669 | INIT_LIST_HEAD(&osdc->req_unsent); |
2670 | INIT_LIST_HEAD(&osdc->req_notarget); | |
a40c4f10 | 2671 | INIT_LIST_HEAD(&osdc->req_linger); |
f24e9980 SW |
2672 | osdc->num_requests = 0; |
2673 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); | |
f5a2041b | 2674 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10 YS |
2675 | spin_lock_init(&osdc->event_lock); |
2676 | osdc->event_tree = RB_ROOT; | |
2677 | osdc->event_count = 0; | |
f5a2041b YS |
2678 | |
2679 | schedule_delayed_work(&osdc->osds_timeout_work, | |
a319bf56 | 2680 | round_jiffies_relative(osdc->client->options->osd_idle_ttl)); |
f24e9980 | 2681 | |
5f44f142 | 2682 | err = -ENOMEM; |
9e767adb ID |
2683 | osdc->req_mempool = mempool_create_slab_pool(10, |
2684 | ceph_osd_request_cache); | |
f24e9980 | 2685 | if (!osdc->req_mempool) |
5f44f142 | 2686 | goto out; |
f24e9980 | 2687 | |
d50b409f SW |
2688 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
2689 | OSD_OP_FRONT_LEN, 10, true, | |
4f48280e | 2690 | "osd_op"); |
f24e9980 | 2691 | if (err < 0) |
5f44f142 | 2692 | goto out_mempool; |
d50b409f | 2693 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
4f48280e SW |
2694 | OSD_OPREPLY_FRONT_LEN, 10, true, |
2695 | "osd_op_reply"); | |
c16e7869 SW |
2696 | if (err < 0) |
2697 | goto out_msgpool; | |
a40c4f10 | 2698 | |
dbcae088 | 2699 | err = -ENOMEM; |
a40c4f10 | 2700 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); |
dbcae088 | 2701 | if (!osdc->notify_wq) |
c172ec5c ID |
2702 | goto out_msgpool_reply; |
2703 | ||
f24e9980 | 2704 | return 0; |
5f44f142 | 2705 | |
c172ec5c ID |
2706 | out_msgpool_reply: |
2707 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); | |
c16e7869 SW |
2708 | out_msgpool: |
2709 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
2710 | out_mempool: |
2711 | mempool_destroy(osdc->req_mempool); | |
2712 | out: | |
2713 | return err; | |
f24e9980 SW |
2714 | } |
2715 | ||
2716 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
2717 | { | |
a40c4f10 YS |
2718 | flush_workqueue(osdc->notify_wq); |
2719 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 2720 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 2721 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
f24e9980 SW |
2722 | if (osdc->osdmap) { |
2723 | ceph_osdmap_destroy(osdc->osdmap); | |
2724 | osdc->osdmap = NULL; | |
2725 | } | |
aca420bc | 2726 | remove_all_osds(osdc); |
f24e9980 SW |
2727 | mempool_destroy(osdc->req_mempool); |
2728 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 2729 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
2730 | } |
2731 | ||
2732 | /* | |
2733 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
2734 | * *plen. Return number of bytes read, or error. | |
2735 | */ | |
2736 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
2737 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
2738 | u64 off, u64 *plen, | |
2739 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 2740 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
2741 | { |
2742 | struct ceph_osd_request *req; | |
2743 | int rc = 0; | |
2744 | ||
2745 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
2746 | vino.snap, off, *plen); | |
715e4cd4 | 2747 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, |
f24e9980 | 2748 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, |
acead002 | 2749 | NULL, truncate_seq, truncate_size, |
153e5167 | 2750 | false); |
6816282d SW |
2751 | if (IS_ERR(req)) |
2752 | return PTR_ERR(req); | |
f24e9980 SW |
2753 | |
2754 | /* it may be a short read due to an object boundary */ | |
0fff87ec | 2755 | |
406e2c9f | 2756 | osd_req_op_extent_osd_data_pages(req, 0, |
a4ce40a9 | 2757 | pages, *plen, page_align, false, false); |
f24e9980 | 2758 | |
e0c59487 | 2759 | dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", |
43bfe5de | 2760 | off, *plen, *plen, page_align); |
f24e9980 | 2761 | |
79528734 | 2762 | ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); |
02ee07d3 | 2763 | |
f24e9980 SW |
2764 | rc = ceph_osdc_start_request(osdc, req, false); |
2765 | if (!rc) | |
2766 | rc = ceph_osdc_wait_request(osdc, req); | |
2767 | ||
2768 | ceph_osdc_put_request(req); | |
2769 | dout("readpages result %d\n", rc); | |
2770 | return rc; | |
2771 | } | |
3d14c5d2 | 2772 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
2773 | |
2774 | /* | |
2775 | * do a synchronous write on N pages | |
2776 | */ | |
2777 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
2778 | struct ceph_file_layout *layout, | |
2779 | struct ceph_snap_context *snapc, | |
2780 | u64 off, u64 len, | |
2781 | u32 truncate_seq, u64 truncate_size, | |
2782 | struct timespec *mtime, | |
24808826 | 2783 | struct page **pages, int num_pages) |
f24e9980 SW |
2784 | { |
2785 | struct ceph_osd_request *req; | |
2786 | int rc = 0; | |
b7495fc2 | 2787 | int page_align = off & ~PAGE_MASK; |
f24e9980 | 2788 | |
acead002 | 2789 | BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ |
715e4cd4 | 2790 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, |
f24e9980 | 2791 | CEPH_OSD_OP_WRITE, |
24808826 | 2792 | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, |
acead002 | 2793 | snapc, truncate_seq, truncate_size, |
153e5167 | 2794 | true); |
6816282d SW |
2795 | if (IS_ERR(req)) |
2796 | return PTR_ERR(req); | |
f24e9980 SW |
2797 | |
2798 | /* it may be a short write due to an object boundary */ | |
406e2c9f | 2799 | osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, |
43bfe5de AE |
2800 | false, false); |
2801 | dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); | |
f24e9980 | 2802 | |
79528734 | 2803 | ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); |
02ee07d3 | 2804 | |
87f979d3 | 2805 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
2806 | if (!rc) |
2807 | rc = ceph_osdc_wait_request(osdc, req); | |
2808 | ||
2809 | ceph_osdc_put_request(req); | |
2810 | if (rc == 0) | |
2811 | rc = len; | |
2812 | dout("writepages result %d\n", rc); | |
2813 | return rc; | |
2814 | } | |
3d14c5d2 | 2815 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 | 2816 | |
5522ae0b AE |
2817 | int ceph_osdc_setup(void) |
2818 | { | |
3f1af42a ID |
2819 | size_t size = sizeof(struct ceph_osd_request) + |
2820 | CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); | |
2821 | ||
5522ae0b | 2822 | BUG_ON(ceph_osd_request_cache); |
3f1af42a ID |
2823 | ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, |
2824 | 0, 0, NULL); | |
5522ae0b AE |
2825 | |
2826 | return ceph_osd_request_cache ? 0 : -ENOMEM; | |
2827 | } | |
2828 | EXPORT_SYMBOL(ceph_osdc_setup); | |
2829 | ||
2830 | void ceph_osdc_cleanup(void) | |
2831 | { | |
2832 | BUG_ON(!ceph_osd_request_cache); | |
2833 | kmem_cache_destroy(ceph_osd_request_cache); | |
2834 | ceph_osd_request_cache = NULL; | |
2835 | } | |
2836 | EXPORT_SYMBOL(ceph_osdc_cleanup); | |
2837 | ||
f24e9980 SW |
2838 | /* |
2839 | * handle incoming message | |
2840 | */ | |
2841 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
2842 | { | |
2843 | struct ceph_osd *osd = con->private; | |
32c895e7 | 2844 | struct ceph_osd_client *osdc; |
f24e9980 SW |
2845 | int type = le16_to_cpu(msg->hdr.type); |
2846 | ||
2847 | if (!osd) | |
4a32f93d | 2848 | goto out; |
32c895e7 | 2849 | osdc = osd->o_osdc; |
f24e9980 SW |
2850 | |
2851 | switch (type) { | |
2852 | case CEPH_MSG_OSD_MAP: | |
2853 | ceph_osdc_handle_map(osdc, msg); | |
2854 | break; | |
2855 | case CEPH_MSG_OSD_OPREPLY: | |
70cf052d | 2856 | handle_reply(osdc, msg); |
f24e9980 | 2857 | break; |
a40c4f10 YS |
2858 | case CEPH_MSG_WATCH_NOTIFY: |
2859 | handle_watch_notify(osdc, msg); | |
2860 | break; | |
f24e9980 SW |
2861 | |
2862 | default: | |
2863 | pr_err("received unknown message type %d %s\n", type, | |
2864 | ceph_msg_type_name(type)); | |
2865 | } | |
4a32f93d | 2866 | out: |
f24e9980 SW |
2867 | ceph_msg_put(msg); |
2868 | } | |
2869 | ||
5b3a4db3 | 2870 | /* |
d15f9d69 ID |
2871 | * Lookup and return message for incoming reply. Don't try to do |
2872 | * anything about a larger than preallocated data portion of the | |
2873 | * message at the moment - for now, just skip the message. | |
5b3a4db3 SW |
2874 | */ |
2875 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
2876 | struct ceph_msg_header *hdr, |
2877 | int *skip) | |
f24e9980 SW |
2878 | { |
2879 | struct ceph_osd *osd = con->private; | |
2880 | struct ceph_osd_client *osdc = osd->o_osdc; | |
2450418c | 2881 | struct ceph_msg *m; |
0547a9b3 | 2882 | struct ceph_osd_request *req; |
3f0a4ac5 | 2883 | int front_len = le32_to_cpu(hdr->front_len); |
5b3a4db3 | 2884 | int data_len = le32_to_cpu(hdr->data_len); |
0547a9b3 | 2885 | u64 tid; |
f24e9980 | 2886 | |
0547a9b3 YS |
2887 | tid = le64_to_cpu(hdr->tid); |
2888 | mutex_lock(&osdc->request_mutex); | |
2889 | req = __lookup_request(osdc, tid); | |
2890 | if (!req) { | |
cd8140c6 ID |
2891 | dout("%s osd%d tid %llu unknown, skipping\n", __func__, |
2892 | osd->o_osd, tid); | |
0547a9b3 | 2893 | m = NULL; |
d15f9d69 | 2894 | *skip = 1; |
0547a9b3 YS |
2895 | goto out; |
2896 | } | |
c16e7869 | 2897 | |
ace6d3a9 | 2898 | ceph_msg_revoke_incoming(req->r_reply); |
0547a9b3 | 2899 | |
f2be82b0 | 2900 | if (front_len > req->r_reply->front_alloc_len) { |
d15f9d69 ID |
2901 | pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", |
2902 | __func__, osd->o_osd, req->r_tid, front_len, | |
2903 | req->r_reply->front_alloc_len); | |
3f0a4ac5 ID |
2904 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, |
2905 | false); | |
a79832f2 | 2906 | if (!m) |
c16e7869 SW |
2907 | goto out; |
2908 | ceph_msg_put(req->r_reply); | |
2909 | req->r_reply = m; | |
2910 | } | |
0fff87ec | 2911 | |
d15f9d69 ID |
2912 | if (data_len > req->r_reply->data_length) { |
2913 | pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", | |
2914 | __func__, osd->o_osd, req->r_tid, data_len, | |
2915 | req->r_reply->data_length); | |
2916 | m = NULL; | |
2917 | *skip = 1; | |
2918 | goto out; | |
0547a9b3 | 2919 | } |
d15f9d69 ID |
2920 | |
2921 | m = ceph_msg_get(req->r_reply); | |
c16e7869 | 2922 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 YS |
2923 | |
2924 | out: | |
2925 | mutex_unlock(&osdc->request_mutex); | |
2450418c | 2926 | return m; |
5b3a4db3 SW |
2927 | } |
2928 | ||
2929 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, | |
2930 | struct ceph_msg_header *hdr, | |
2931 | int *skip) | |
2932 | { | |
2933 | struct ceph_osd *osd = con->private; | |
2934 | int type = le16_to_cpu(hdr->type); | |
2935 | int front = le32_to_cpu(hdr->front_len); | |
2936 | ||
1c20f2d2 | 2937 | *skip = 0; |
5b3a4db3 SW |
2938 | switch (type) { |
2939 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 2940 | case CEPH_MSG_WATCH_NOTIFY: |
b61c2763 | 2941 | return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3 SW |
2942 | case CEPH_MSG_OSD_OPREPLY: |
2943 | return get_reply(con, hdr, skip); | |
2944 | default: | |
2945 | pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, | |
2946 | osd->o_osd); | |
2947 | *skip = 1; | |
2948 | return NULL; | |
2949 | } | |
f24e9980 SW |
2950 | } |
2951 | ||
2952 | /* | |
2953 | * Wrappers to refcount containing ceph_osd struct | |
2954 | */ | |
2955 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
2956 | { | |
2957 | struct ceph_osd *osd = con->private; | |
2958 | if (get_osd(osd)) | |
2959 | return con; | |
2960 | return NULL; | |
2961 | } | |
2962 | ||
2963 | static void put_osd_con(struct ceph_connection *con) | |
2964 | { | |
2965 | struct ceph_osd *osd = con->private; | |
2966 | put_osd(osd); | |
2967 | } | |
2968 | ||
4e7a5dcd SW |
2969 | /* |
2970 | * authentication | |
2971 | */ | |
a3530df3 AE |
2972 | /* |
2973 | * Note: returned pointer is the address of a structure that's | |
2974 | * managed separately. Caller must *not* attempt to free it. | |
2975 | */ | |
2976 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 2977 | int *proto, int force_new) |
4e7a5dcd SW |
2978 | { |
2979 | struct ceph_osd *o = con->private; | |
2980 | struct ceph_osd_client *osdc = o->o_osdc; | |
2981 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 2982 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 2983 | |
74f1869f | 2984 | if (force_new && auth->authorizer) { |
6c1ea260 | 2985 | ceph_auth_destroy_authorizer(auth->authorizer); |
74f1869f AE |
2986 | auth->authorizer = NULL; |
2987 | } | |
27859f97 SW |
2988 | if (!auth->authorizer) { |
2989 | int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
2990 | auth); | |
4e7a5dcd | 2991 | if (ret) |
a3530df3 | 2992 | return ERR_PTR(ret); |
27859f97 SW |
2993 | } else { |
2994 | int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
0bed9b5c SW |
2995 | auth); |
2996 | if (ret) | |
2997 | return ERR_PTR(ret); | |
4e7a5dcd | 2998 | } |
4e7a5dcd | 2999 | *proto = ac->protocol; |
74f1869f | 3000 | |
a3530df3 | 3001 | return auth; |
4e7a5dcd SW |
3002 | } |
3003 | ||
3004 | ||
3005 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
3006 | { | |
3007 | struct ceph_osd *o = con->private; | |
3008 | struct ceph_osd_client *osdc = o->o_osdc; | |
3009 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
3010 | ||
27859f97 | 3011 | return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
3012 | } |
3013 | ||
9bd2e6f8 SW |
3014 | static int invalidate_authorizer(struct ceph_connection *con) |
3015 | { | |
3016 | struct ceph_osd *o = con->private; | |
3017 | struct ceph_osd_client *osdc = o->o_osdc; | |
3018 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
3019 | ||
27859f97 | 3020 | ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
9bd2e6f8 SW |
3021 | return ceph_monc_validate_auth(&osdc->client->monc); |
3022 | } | |
4e7a5dcd | 3023 | |
79dbd1ba | 3024 | static int osd_sign_message(struct ceph_msg *msg) |
33d07337 | 3025 | { |
79dbd1ba | 3026 | struct ceph_osd *o = msg->con->private; |
33d07337 | 3027 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 3028 | |
33d07337 YZ |
3029 | return ceph_auth_sign_message(auth, msg); |
3030 | } | |
3031 | ||
79dbd1ba | 3032 | static int osd_check_message_signature(struct ceph_msg *msg) |
33d07337 | 3033 | { |
79dbd1ba | 3034 | struct ceph_osd *o = msg->con->private; |
33d07337 | 3035 | struct ceph_auth_handshake *auth = &o->o_auth; |
79dbd1ba | 3036 | |
33d07337 YZ |
3037 | return ceph_auth_check_message_signature(auth, msg); |
3038 | } | |
3039 | ||
9e32789f | 3040 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
3041 | .get = get_osd_con, |
3042 | .put = put_osd_con, | |
3043 | .dispatch = dispatch, | |
4e7a5dcd SW |
3044 | .get_authorizer = get_authorizer, |
3045 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 3046 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 3047 | .alloc_msg = alloc_msg, |
79dbd1ba ID |
3048 | .sign_message = osd_sign_message, |
3049 | .check_message_signature = osd_check_message_signature, | |
81b024e7 | 3050 | .fault = osd_reset, |
f24e9980 | 3051 | }; |