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3d14c5d2 | 1 | #include <linux/ceph/ceph_debug.h> |
f24e9980 | 2 | |
3d14c5d2 | 3 | #include <linux/module.h> |
f24e9980 SW |
4 | #include <linux/err.h> |
5 | #include <linux/highmem.h> | |
6 | #include <linux/mm.h> | |
7 | #include <linux/pagemap.h> | |
8 | #include <linux/slab.h> | |
9 | #include <linux/uaccess.h> | |
68b4476b YS |
10 | #ifdef CONFIG_BLOCK |
11 | #include <linux/bio.h> | |
12 | #endif | |
f24e9980 | 13 | |
3d14c5d2 YS |
14 | #include <linux/ceph/libceph.h> |
15 | #include <linux/ceph/osd_client.h> | |
16 | #include <linux/ceph/messenger.h> | |
17 | #include <linux/ceph/decode.h> | |
18 | #include <linux/ceph/auth.h> | |
19 | #include <linux/ceph/pagelist.h> | |
f24e9980 | 20 | |
c16e7869 SW |
21 | #define OSD_OP_FRONT_LEN 4096 |
22 | #define OSD_OPREPLY_FRONT_LEN 512 | |
0d59ab81 | 23 | |
9e32789f | 24 | static const struct ceph_connection_operations osd_con_ops; |
f24e9980 | 25 | |
f9d25199 | 26 | static void __send_queued(struct ceph_osd_client *osdc); |
6f6c7006 | 27 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); |
a40c4f10 YS |
28 | static void __register_request(struct ceph_osd_client *osdc, |
29 | struct ceph_osd_request *req); | |
30 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
31 | struct ceph_osd_request *req); | |
56e925b6 SW |
32 | static void __send_request(struct ceph_osd_client *osdc, |
33 | struct ceph_osd_request *req); | |
f24e9980 SW |
34 | |
35 | /* | |
36 | * Implement client access to distributed object storage cluster. | |
37 | * | |
38 | * All data objects are stored within a cluster/cloud of OSDs, or | |
39 | * "object storage devices." (Note that Ceph OSDs have _nothing_ to | |
40 | * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply | |
41 | * remote daemons serving up and coordinating consistent and safe | |
42 | * access to storage. | |
43 | * | |
44 | * Cluster membership and the mapping of data objects onto storage devices | |
45 | * are described by the osd map. | |
46 | * | |
47 | * We keep track of pending OSD requests (read, write), resubmit | |
48 | * requests to different OSDs when the cluster topology/data layout | |
49 | * change, or retry the affected requests when the communications | |
50 | * channel with an OSD is reset. | |
51 | */ | |
52 | ||
53 | /* | |
54 | * calculate the mapping of a file extent onto an object, and fill out the | |
55 | * request accordingly. shorten extent as necessary if it crosses an | |
56 | * object boundary. | |
57 | * | |
58 | * fill osd op in request message. | |
59 | */ | |
dbe0fc41 | 60 | static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, |
a19dadfb | 61 | u64 *objnum, u64 *objoff, u64 *objlen) |
f24e9980 | 62 | { |
60e56f13 | 63 | u64 orig_len = *plen; |
d63b77f4 | 64 | int r; |
f24e9980 | 65 | |
60e56f13 | 66 | /* object extent? */ |
75d1c941 AE |
67 | r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, |
68 | objoff, objlen); | |
d63b77f4 SW |
69 | if (r < 0) |
70 | return r; | |
75d1c941 AE |
71 | if (*objlen < orig_len) { |
72 | *plen = *objlen; | |
60e56f13 AE |
73 | dout(" skipping last %llu, final file extent %llu~%llu\n", |
74 | orig_len - *plen, off, *plen); | |
75 | } | |
76 | ||
75d1c941 | 77 | dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); |
f24e9980 | 78 | |
3ff5f385 | 79 | return 0; |
f24e9980 SW |
80 | } |
81 | ||
c54d47bf AE |
82 | static void ceph_osd_data_init(struct ceph_osd_data *osd_data) |
83 | { | |
84 | memset(osd_data, 0, sizeof (*osd_data)); | |
85 | osd_data->type = CEPH_OSD_DATA_TYPE_NONE; | |
86 | } | |
87 | ||
43bfe5de AE |
88 | void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, |
89 | struct page **pages, u64 length, u32 alignment, | |
90 | bool pages_from_pool, bool own_pages) | |
91 | { | |
92 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; | |
93 | osd_data->pages = pages; | |
94 | osd_data->length = length; | |
95 | osd_data->alignment = alignment; | |
96 | osd_data->pages_from_pool = pages_from_pool; | |
97 | osd_data->own_pages = own_pages; | |
98 | } | |
99 | EXPORT_SYMBOL(ceph_osd_data_pages_init); | |
100 | ||
101 | void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, | |
102 | struct ceph_pagelist *pagelist) | |
103 | { | |
104 | osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; | |
105 | osd_data->pagelist = pagelist; | |
106 | } | |
107 | EXPORT_SYMBOL(ceph_osd_data_pagelist_init); | |
108 | ||
109 | #ifdef CONFIG_BLOCK | |
110 | void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, | |
111 | struct bio *bio, size_t bio_length) | |
112 | { | |
113 | osd_data->type = CEPH_OSD_DATA_TYPE_BIO; | |
114 | osd_data->bio = bio; | |
115 | osd_data->bio_length = bio_length; | |
116 | } | |
117 | EXPORT_SYMBOL(ceph_osd_data_bio_init); | |
118 | #endif /* CONFIG_BLOCK */ | |
119 | ||
23c08a9c AE |
120 | static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) |
121 | { | |
122 | switch (osd_data->type) { | |
123 | case CEPH_OSD_DATA_TYPE_NONE: | |
124 | return 0; | |
125 | case CEPH_OSD_DATA_TYPE_PAGES: | |
126 | return osd_data->length; | |
127 | case CEPH_OSD_DATA_TYPE_PAGELIST: | |
128 | return (u64)osd_data->pagelist->length; | |
129 | #ifdef CONFIG_BLOCK | |
130 | case CEPH_OSD_DATA_TYPE_BIO: | |
131 | return (u64)osd_data->bio_length; | |
132 | #endif /* CONFIG_BLOCK */ | |
133 | default: | |
134 | WARN(true, "unrecognized data type %d\n", (int)osd_data->type); | |
135 | return 0; | |
136 | } | |
137 | } | |
138 | ||
c54d47bf AE |
139 | static void ceph_osd_data_release(struct ceph_osd_data *osd_data) |
140 | { | |
141 | if (osd_data->type != CEPH_OSD_DATA_TYPE_PAGES) | |
142 | return; | |
143 | ||
144 | if (osd_data->own_pages) { | |
145 | int num_pages; | |
146 | ||
147 | num_pages = calc_pages_for((u64)osd_data->alignment, | |
148 | (u64)osd_data->length); | |
149 | ceph_release_page_vector(osd_data->pages, num_pages); | |
150 | } | |
151 | } | |
152 | ||
f24e9980 SW |
153 | /* |
154 | * requests | |
155 | */ | |
415e49a9 | 156 | void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 157 | { |
c54d47bf | 158 | struct ceph_osd_request *req; |
415e49a9 | 159 | |
c54d47bf | 160 | req = container_of(kref, struct ceph_osd_request, r_kref); |
415e49a9 SW |
161 | if (req->r_request) |
162 | ceph_msg_put(req->r_request); | |
ace6d3a9 | 163 | if (req->r_reply) { |
8921d114 | 164 | ceph_msg_revoke_incoming(req->r_reply); |
ab8cb34a | 165 | ceph_msg_put(req->r_reply); |
ace6d3a9 | 166 | } |
0fff87ec | 167 | |
c54d47bf AE |
168 | ceph_osd_data_release(&req->r_data_in); |
169 | ceph_osd_data_release(&req->r_data_out); | |
0fff87ec | 170 | |
415e49a9 SW |
171 | ceph_put_snap_context(req->r_snapc); |
172 | if (req->r_mempool) | |
173 | mempool_free(req, req->r_osdc->req_mempool); | |
174 | else | |
175 | kfree(req); | |
f24e9980 | 176 | } |
3d14c5d2 | 177 | EXPORT_SYMBOL(ceph_osdc_release_request); |
68b4476b | 178 | |
3499e8a5 | 179 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
f24e9980 | 180 | struct ceph_snap_context *snapc, |
1b83bef2 | 181 | unsigned int num_ops, |
3499e8a5 | 182 | bool use_mempool, |
54a54007 | 183 | gfp_t gfp_flags) |
f24e9980 SW |
184 | { |
185 | struct ceph_osd_request *req; | |
186 | struct ceph_msg *msg; | |
1b83bef2 SW |
187 | size_t msg_size; |
188 | ||
79528734 AE |
189 | BUILD_BUG_ON(CEPH_OSD_MAX_OP > U16_MAX); |
190 | BUG_ON(num_ops > CEPH_OSD_MAX_OP); | |
191 | ||
1b83bef2 SW |
192 | msg_size = 4 + 4 + 8 + 8 + 4+8; |
193 | msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ | |
194 | msg_size += 1 + 8 + 4 + 4; /* pg_t */ | |
195 | msg_size += 4 + MAX_OBJ_NAME_SIZE; | |
196 | msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); | |
197 | msg_size += 8; /* snapid */ | |
198 | msg_size += 8; /* snap_seq */ | |
199 | msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ | |
200 | msg_size += 4; | |
f24e9980 SW |
201 | |
202 | if (use_mempool) { | |
3499e8a5 | 203 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
f24e9980 SW |
204 | memset(req, 0, sizeof(*req)); |
205 | } else { | |
3499e8a5 | 206 | req = kzalloc(sizeof(*req), gfp_flags); |
f24e9980 SW |
207 | } |
208 | if (req == NULL) | |
a79832f2 | 209 | return NULL; |
f24e9980 | 210 | |
f24e9980 SW |
211 | req->r_osdc = osdc; |
212 | req->r_mempool = use_mempool; | |
79528734 | 213 | req->r_num_ops = num_ops; |
68b4476b | 214 | |
415e49a9 | 215 | kref_init(&req->r_kref); |
f24e9980 SW |
216 | init_completion(&req->r_completion); |
217 | init_completion(&req->r_safe_completion); | |
a978fa20 | 218 | RB_CLEAR_NODE(&req->r_node); |
f24e9980 | 219 | INIT_LIST_HEAD(&req->r_unsafe_item); |
a40c4f10 YS |
220 | INIT_LIST_HEAD(&req->r_linger_item); |
221 | INIT_LIST_HEAD(&req->r_linger_osd); | |
935b639a | 222 | INIT_LIST_HEAD(&req->r_req_lru_item); |
cd43045c SW |
223 | INIT_LIST_HEAD(&req->r_osd_item); |
224 | ||
c16e7869 SW |
225 | /* create reply message */ |
226 | if (use_mempool) | |
227 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
228 | else | |
229 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, | |
b61c2763 | 230 | OSD_OPREPLY_FRONT_LEN, gfp_flags, true); |
a79832f2 | 231 | if (!msg) { |
c16e7869 | 232 | ceph_osdc_put_request(req); |
a79832f2 | 233 | return NULL; |
c16e7869 SW |
234 | } |
235 | req->r_reply = msg; | |
236 | ||
c54d47bf AE |
237 | ceph_osd_data_init(&req->r_data_in); |
238 | ceph_osd_data_init(&req->r_data_out); | |
d50b409f | 239 | |
c16e7869 | 240 | /* create request message; allow space for oid */ |
f24e9980 | 241 | if (use_mempool) |
8f3bc053 | 242 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 243 | else |
b61c2763 | 244 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); |
a79832f2 | 245 | if (!msg) { |
f24e9980 | 246 | ceph_osdc_put_request(req); |
a79832f2 | 247 | return NULL; |
f24e9980 | 248 | } |
68b4476b | 249 | |
f24e9980 | 250 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 YS |
251 | |
252 | req->r_request = msg; | |
3499e8a5 YS |
253 | |
254 | return req; | |
255 | } | |
3d14c5d2 | 256 | EXPORT_SYMBOL(ceph_osdc_alloc_request); |
3499e8a5 | 257 | |
a8dd0a37 | 258 | static bool osd_req_opcode_valid(u16 opcode) |
68b4476b | 259 | { |
a8dd0a37 | 260 | switch (opcode) { |
68b4476b | 261 | case CEPH_OSD_OP_READ: |
a8dd0a37 | 262 | case CEPH_OSD_OP_STAT: |
4c46459c AE |
263 | case CEPH_OSD_OP_MAPEXT: |
264 | case CEPH_OSD_OP_MASKTRUNC: | |
265 | case CEPH_OSD_OP_SPARSE_READ: | |
a9f36c3e | 266 | case CEPH_OSD_OP_NOTIFY: |
a8dd0a37 | 267 | case CEPH_OSD_OP_NOTIFY_ACK: |
4c46459c | 268 | case CEPH_OSD_OP_ASSERT_VER: |
a8dd0a37 | 269 | case CEPH_OSD_OP_WRITE: |
4c46459c AE |
270 | case CEPH_OSD_OP_WRITEFULL: |
271 | case CEPH_OSD_OP_TRUNCATE: | |
272 | case CEPH_OSD_OP_ZERO: | |
273 | case CEPH_OSD_OP_DELETE: | |
274 | case CEPH_OSD_OP_APPEND: | |
a8dd0a37 | 275 | case CEPH_OSD_OP_STARTSYNC: |
4c46459c AE |
276 | case CEPH_OSD_OP_SETTRUNC: |
277 | case CEPH_OSD_OP_TRIMTRUNC: | |
278 | case CEPH_OSD_OP_TMAPUP: | |
279 | case CEPH_OSD_OP_TMAPPUT: | |
280 | case CEPH_OSD_OP_TMAPGET: | |
281 | case CEPH_OSD_OP_CREATE: | |
a9f36c3e | 282 | case CEPH_OSD_OP_ROLLBACK: |
a8dd0a37 | 283 | case CEPH_OSD_OP_WATCH: |
4c46459c AE |
284 | case CEPH_OSD_OP_OMAPGETKEYS: |
285 | case CEPH_OSD_OP_OMAPGETVALS: | |
286 | case CEPH_OSD_OP_OMAPGETHEADER: | |
287 | case CEPH_OSD_OP_OMAPGETVALSBYKEYS: | |
4c46459c AE |
288 | case CEPH_OSD_OP_OMAPSETVALS: |
289 | case CEPH_OSD_OP_OMAPSETHEADER: | |
290 | case CEPH_OSD_OP_OMAPCLEAR: | |
291 | case CEPH_OSD_OP_OMAPRMKEYS: | |
292 | case CEPH_OSD_OP_OMAP_CMP: | |
293 | case CEPH_OSD_OP_CLONERANGE: | |
294 | case CEPH_OSD_OP_ASSERT_SRC_VERSION: | |
295 | case CEPH_OSD_OP_SRC_CMPXATTR: | |
a9f36c3e | 296 | case CEPH_OSD_OP_GETXATTR: |
4c46459c | 297 | case CEPH_OSD_OP_GETXATTRS: |
a9f36c3e AE |
298 | case CEPH_OSD_OP_CMPXATTR: |
299 | case CEPH_OSD_OP_SETXATTR: | |
4c46459c AE |
300 | case CEPH_OSD_OP_SETXATTRS: |
301 | case CEPH_OSD_OP_RESETXATTRS: | |
302 | case CEPH_OSD_OP_RMXATTR: | |
303 | case CEPH_OSD_OP_PULL: | |
304 | case CEPH_OSD_OP_PUSH: | |
305 | case CEPH_OSD_OP_BALANCEREADS: | |
306 | case CEPH_OSD_OP_UNBALANCEREADS: | |
307 | case CEPH_OSD_OP_SCRUB: | |
308 | case CEPH_OSD_OP_SCRUB_RESERVE: | |
309 | case CEPH_OSD_OP_SCRUB_UNRESERVE: | |
310 | case CEPH_OSD_OP_SCRUB_STOP: | |
311 | case CEPH_OSD_OP_SCRUB_MAP: | |
312 | case CEPH_OSD_OP_WRLOCK: | |
313 | case CEPH_OSD_OP_WRUNLOCK: | |
314 | case CEPH_OSD_OP_RDLOCK: | |
315 | case CEPH_OSD_OP_RDUNLOCK: | |
316 | case CEPH_OSD_OP_UPLOCK: | |
317 | case CEPH_OSD_OP_DNLOCK: | |
a8dd0a37 | 318 | case CEPH_OSD_OP_CALL: |
4c46459c AE |
319 | case CEPH_OSD_OP_PGLS: |
320 | case CEPH_OSD_OP_PGLS_FILTER: | |
a8dd0a37 AE |
321 | return true; |
322 | default: | |
323 | return false; | |
324 | } | |
325 | } | |
326 | ||
33803f33 AE |
327 | /* |
328 | * This is an osd op init function for opcodes that have no data or | |
329 | * other information associated with them. It also serves as a | |
330 | * common init routine for all the other init functions, below. | |
331 | */ | |
c99d2d4a AE |
332 | static struct ceph_osd_req_op * |
333 | osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, | |
334 | u16 opcode) | |
33803f33 | 335 | { |
c99d2d4a AE |
336 | struct ceph_osd_req_op *op; |
337 | ||
338 | BUG_ON(which >= osd_req->r_num_ops); | |
33803f33 AE |
339 | BUG_ON(!osd_req_opcode_valid(opcode)); |
340 | ||
c99d2d4a | 341 | op = &osd_req->r_ops[which]; |
33803f33 | 342 | memset(op, 0, sizeof (*op)); |
33803f33 | 343 | op->op = opcode; |
c99d2d4a AE |
344 | |
345 | return op; | |
33803f33 AE |
346 | } |
347 | ||
c99d2d4a AE |
348 | void osd_req_op_extent_init(struct ceph_osd_request *osd_req, |
349 | unsigned int which, u16 opcode, | |
33803f33 AE |
350 | u64 offset, u64 length, |
351 | u64 truncate_size, u32 truncate_seq) | |
352 | { | |
c99d2d4a | 353 | struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, opcode); |
33803f33 AE |
354 | size_t payload_len = 0; |
355 | ||
356 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); | |
357 | ||
33803f33 AE |
358 | op->extent.offset = offset; |
359 | op->extent.length = length; | |
360 | op->extent.truncate_size = truncate_size; | |
361 | op->extent.truncate_seq = truncate_seq; | |
362 | if (opcode == CEPH_OSD_OP_WRITE) | |
363 | payload_len += length; | |
364 | ||
365 | op->payload_len = payload_len; | |
366 | } | |
367 | EXPORT_SYMBOL(osd_req_op_extent_init); | |
368 | ||
c99d2d4a AE |
369 | void osd_req_op_extent_update(struct ceph_osd_request *osd_req, |
370 | unsigned int which, u64 length) | |
e5975c7c | 371 | { |
c99d2d4a AE |
372 | struct ceph_osd_req_op *op; |
373 | u64 previous; | |
374 | ||
375 | BUG_ON(which >= osd_req->r_num_ops); | |
376 | op = &osd_req->r_ops[which]; | |
377 | previous = op->extent.length; | |
e5975c7c AE |
378 | |
379 | if (length == previous) | |
380 | return; /* Nothing to do */ | |
381 | BUG_ON(length > previous); | |
382 | ||
383 | op->extent.length = length; | |
384 | op->payload_len -= previous - length; | |
385 | } | |
386 | EXPORT_SYMBOL(osd_req_op_extent_update); | |
387 | ||
c99d2d4a AE |
388 | void osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, |
389 | unsigned int which, | |
8c042b0d AE |
390 | struct ceph_osd_data *osd_data) |
391 | { | |
c99d2d4a AE |
392 | BUG_ON(which >= osd_req->r_num_ops); |
393 | osd_req->r_ops[which].extent.osd_data = osd_data; | |
8c042b0d AE |
394 | } |
395 | EXPORT_SYMBOL(osd_req_op_extent_osd_data); | |
396 | ||
c99d2d4a AE |
397 | void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, |
398 | u16 opcode, const char *class, const char *method, | |
33803f33 AE |
399 | const void *request_data, size_t request_data_size) |
400 | { | |
c99d2d4a | 401 | struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, opcode); |
5f562df5 | 402 | struct ceph_pagelist *pagelist; |
33803f33 AE |
403 | size_t payload_len = 0; |
404 | size_t size; | |
405 | ||
406 | BUG_ON(opcode != CEPH_OSD_OP_CALL); | |
407 | ||
5f562df5 AE |
408 | pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); |
409 | BUG_ON(!pagelist); | |
410 | ceph_pagelist_init(pagelist); | |
411 | ||
33803f33 AE |
412 | op->cls.class_name = class; |
413 | size = strlen(class); | |
414 | BUG_ON(size > (size_t) U8_MAX); | |
415 | op->cls.class_len = size; | |
5f562df5 | 416 | ceph_pagelist_append(pagelist, class, size); |
33803f33 AE |
417 | payload_len += size; |
418 | ||
419 | op->cls.method_name = method; | |
420 | size = strlen(method); | |
421 | BUG_ON(size > (size_t) U8_MAX); | |
422 | op->cls.method_len = size; | |
5f562df5 | 423 | ceph_pagelist_append(pagelist, method, size); |
33803f33 AE |
424 | payload_len += size; |
425 | ||
54d50649 | 426 | op->cls.request_data = request_data; |
33803f33 | 427 | BUG_ON(request_data_size > (size_t) U32_MAX); |
54d50649 | 428 | op->cls.request_data_len = (u32) request_data_size; |
5f562df5 | 429 | ceph_pagelist_append(pagelist, request_data, request_data_size); |
33803f33 AE |
430 | payload_len += request_data_size; |
431 | ||
5f562df5 AE |
432 | op->cls.request_info = &osd_req->r_data_out; |
433 | ceph_osd_data_pagelist_init(op->cls.request_info, pagelist); | |
434 | ||
33803f33 AE |
435 | op->cls.argc = 0; /* currently unused */ |
436 | ||
437 | op->payload_len = payload_len; | |
438 | } | |
439 | EXPORT_SYMBOL(osd_req_op_cls_init); | |
c99d2d4a AE |
440 | void osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, |
441 | unsigned int which, | |
8c042b0d AE |
442 | struct ceph_osd_data *response_data) |
443 | { | |
c99d2d4a AE |
444 | BUG_ON(which >= osd_req->r_num_ops); |
445 | osd_req->r_ops[which].cls.response_data = response_data; | |
8c042b0d AE |
446 | } |
447 | EXPORT_SYMBOL(osd_req_op_cls_response_data); | |
448 | ||
c99d2d4a AE |
449 | void osd_req_op_watch_init(struct ceph_osd_request *osd_req, |
450 | unsigned int which, u16 opcode, | |
33803f33 AE |
451 | u64 cookie, u64 version, int flag) |
452 | { | |
c99d2d4a | 453 | struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, opcode); |
33803f33 | 454 | |
c99d2d4a | 455 | BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); |
33803f33 AE |
456 | |
457 | op->watch.cookie = cookie; | |
458 | /* op->watch.ver = version; */ /* XXX 3847 */ | |
459 | op->watch.ver = cpu_to_le64(version); | |
460 | if (opcode == CEPH_OSD_OP_WATCH && flag) | |
c99d2d4a | 461 | op->watch.flag = (u8)1; |
33803f33 AE |
462 | } |
463 | EXPORT_SYMBOL(osd_req_op_watch_init); | |
464 | ||
a8dd0a37 | 465 | static u64 osd_req_encode_op(struct ceph_osd_request *req, |
79528734 | 466 | struct ceph_osd_op *dst, unsigned int which) |
a8dd0a37 | 467 | { |
79528734 | 468 | struct ceph_osd_req_op *src; |
54d50649 | 469 | u64 request_data_len = 0; |
a8dd0a37 | 470 | |
79528734 AE |
471 | BUG_ON(which >= req->r_num_ops); |
472 | src = &req->r_ops[which]; | |
a8dd0a37 AE |
473 | if (WARN_ON(!osd_req_opcode_valid(src->op))) { |
474 | pr_err("unrecognized osd opcode %d\n", src->op); | |
475 | ||
476 | return 0; | |
477 | } | |
478 | ||
479 | switch (src->op) { | |
480 | case CEPH_OSD_OP_STAT: | |
481 | break; | |
482 | case CEPH_OSD_OP_READ: | |
483 | case CEPH_OSD_OP_WRITE: | |
484 | if (src->op == CEPH_OSD_OP_WRITE) | |
54d50649 | 485 | request_data_len = src->extent.length; |
a8dd0a37 AE |
486 | dst->extent.offset = cpu_to_le64(src->extent.offset); |
487 | dst->extent.length = cpu_to_le64(src->extent.length); | |
488 | dst->extent.truncate_size = | |
489 | cpu_to_le64(src->extent.truncate_size); | |
490 | dst->extent.truncate_seq = | |
491 | cpu_to_le32(src->extent.truncate_seq); | |
8c042b0d AE |
492 | if (src->op == CEPH_OSD_OP_WRITE) |
493 | WARN_ON(src->extent.osd_data != &req->r_data_out); | |
494 | else | |
495 | WARN_ON(src->extent.osd_data != &req->r_data_in); | |
a8dd0a37 AE |
496 | break; |
497 | case CEPH_OSD_OP_CALL: | |
a8dd0a37 AE |
498 | dst->cls.class_len = src->cls.class_len; |
499 | dst->cls.method_len = src->cls.method_len; | |
54d50649 | 500 | dst->cls.indata_len = cpu_to_le32(src->cls.request_data_len); |
8c042b0d | 501 | WARN_ON(src->cls.response_data != &req->r_data_in); |
5f562df5 AE |
502 | WARN_ON(src->cls.request_info != &req->r_data_out); |
503 | BUG_ON(src->cls.request_info->type != | |
504 | CEPH_OSD_DATA_TYPE_PAGELIST); | |
505 | request_data_len = src->cls.request_info->pagelist->length; | |
a8dd0a37 AE |
506 | break; |
507 | case CEPH_OSD_OP_STARTSYNC: | |
508 | break; | |
509 | case CEPH_OSD_OP_NOTIFY_ACK: | |
510 | case CEPH_OSD_OP_WATCH: | |
511 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
512 | dst->watch.ver = cpu_to_le64(src->watch.ver); | |
513 | dst->watch.flag = src->watch.flag; | |
514 | break; | |
515 | default: | |
4c46459c | 516 | pr_err("unsupported osd opcode %s\n", |
8f63ca2d | 517 | ceph_osd_op_name(src->op)); |
4c46459c | 518 | WARN_ON(1); |
a8dd0a37 AE |
519 | |
520 | return 0; | |
68b4476b | 521 | } |
a8dd0a37 | 522 | dst->op = cpu_to_le16(src->op); |
68b4476b | 523 | dst->payload_len = cpu_to_le32(src->payload_len); |
175face2 | 524 | |
54d50649 | 525 | return request_data_len; |
68b4476b YS |
526 | } |
527 | ||
3499e8a5 YS |
528 | /* |
529 | * build new request AND message, calculate layout, and adjust file | |
530 | * extent as needed. | |
531 | * | |
532 | * if the file was recently truncated, we include information about its | |
533 | * old and new size so that the object can be updated appropriately. (we | |
534 | * avoid synchronously deleting truncated objects because it's slow.) | |
535 | * | |
536 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
537 | * data quickly. | |
538 | */ | |
539 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
540 | struct ceph_file_layout *layout, | |
541 | struct ceph_vino vino, | |
acead002 | 542 | u64 off, u64 *plen, int num_ops, |
3499e8a5 YS |
543 | int opcode, int flags, |
544 | struct ceph_snap_context *snapc, | |
3499e8a5 YS |
545 | u32 truncate_seq, |
546 | u64 truncate_size, | |
153e5167 | 547 | bool use_mempool) |
3499e8a5 | 548 | { |
68b4476b | 549 | struct ceph_osd_request *req; |
8c042b0d | 550 | struct ceph_osd_data *osd_data; |
75d1c941 AE |
551 | u64 objnum = 0; |
552 | u64 objoff = 0; | |
553 | u64 objlen = 0; | |
d18d1e28 AE |
554 | u32 object_size; |
555 | u64 object_base; | |
6816282d | 556 | int r; |
68b4476b | 557 | |
d18d1e28 | 558 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); |
68b4476b | 559 | |
acead002 | 560 | req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, |
ae7ca4a3 | 561 | GFP_NOFS); |
4ad12621 | 562 | if (!req) |
6816282d | 563 | return ERR_PTR(-ENOMEM); |
8c042b0d AE |
564 | osd_data = opcode == CEPH_OSD_OP_WRITE ? &req->r_data_out |
565 | : &req->r_data_in; | |
79528734 | 566 | |
d178a9e7 | 567 | req->r_flags = flags; |
3499e8a5 YS |
568 | |
569 | /* calculate max write size */ | |
a19dadfb | 570 | r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); |
3ff5f385 AE |
571 | if (r < 0) { |
572 | ceph_osdc_put_request(req); | |
6816282d | 573 | return ERR_PTR(r); |
3ff5f385 | 574 | } |
a19dadfb | 575 | |
d18d1e28 AE |
576 | object_size = le32_to_cpu(layout->fl_object_size); |
577 | object_base = off - objoff; | |
578 | if (truncate_size <= object_base) { | |
579 | truncate_size = 0; | |
580 | } else { | |
581 | truncate_size -= object_base; | |
582 | if (truncate_size > object_size) | |
583 | truncate_size = object_size; | |
a19dadfb | 584 | } |
d18d1e28 | 585 | |
c99d2d4a | 586 | osd_req_op_extent_init(req, 0, opcode, objoff, objlen, |
b0270324 | 587 | truncate_size, truncate_seq); |
c99d2d4a | 588 | osd_req_op_extent_osd_data(req, 0, osd_data); |
8c042b0d | 589 | |
acead002 AE |
590 | /* |
591 | * A second op in the ops array means the caller wants to | |
592 | * also issue a include a 'startsync' command so that the | |
593 | * osd will flush data quickly. | |
594 | */ | |
595 | if (num_ops > 1) | |
c99d2d4a | 596 | osd_req_op_init(req, 1, CEPH_OSD_OP_STARTSYNC); |
d18d1e28 | 597 | |
3499e8a5 YS |
598 | req->r_file_layout = *layout; /* keep a copy */ |
599 | ||
75d1c941 AE |
600 | snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", |
601 | vino.ino, objnum); | |
dbe0fc41 AE |
602 | req->r_oid_len = strlen(req->r_oid); |
603 | ||
f24e9980 SW |
604 | return req; |
605 | } | |
3d14c5d2 | 606 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
607 | |
608 | /* | |
609 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
610 | */ | |
611 | static void __insert_request(struct ceph_osd_client *osdc, | |
612 | struct ceph_osd_request *new) | |
613 | { | |
614 | struct rb_node **p = &osdc->requests.rb_node; | |
615 | struct rb_node *parent = NULL; | |
616 | struct ceph_osd_request *req = NULL; | |
617 | ||
618 | while (*p) { | |
619 | parent = *p; | |
620 | req = rb_entry(parent, struct ceph_osd_request, r_node); | |
621 | if (new->r_tid < req->r_tid) | |
622 | p = &(*p)->rb_left; | |
623 | else if (new->r_tid > req->r_tid) | |
624 | p = &(*p)->rb_right; | |
625 | else | |
626 | BUG(); | |
627 | } | |
628 | ||
629 | rb_link_node(&new->r_node, parent, p); | |
630 | rb_insert_color(&new->r_node, &osdc->requests); | |
631 | } | |
632 | ||
633 | static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, | |
634 | u64 tid) | |
635 | { | |
636 | struct ceph_osd_request *req; | |
637 | struct rb_node *n = osdc->requests.rb_node; | |
638 | ||
639 | while (n) { | |
640 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
641 | if (tid < req->r_tid) | |
642 | n = n->rb_left; | |
643 | else if (tid > req->r_tid) | |
644 | n = n->rb_right; | |
645 | else | |
646 | return req; | |
647 | } | |
648 | return NULL; | |
649 | } | |
650 | ||
651 | static struct ceph_osd_request * | |
652 | __lookup_request_ge(struct ceph_osd_client *osdc, | |
653 | u64 tid) | |
654 | { | |
655 | struct ceph_osd_request *req; | |
656 | struct rb_node *n = osdc->requests.rb_node; | |
657 | ||
658 | while (n) { | |
659 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
660 | if (tid < req->r_tid) { | |
661 | if (!n->rb_left) | |
662 | return req; | |
663 | n = n->rb_left; | |
664 | } else if (tid > req->r_tid) { | |
665 | n = n->rb_right; | |
666 | } else { | |
667 | return req; | |
668 | } | |
669 | } | |
670 | return NULL; | |
671 | } | |
672 | ||
6f6c7006 SW |
673 | /* |
674 | * Resubmit requests pending on the given osd. | |
675 | */ | |
676 | static void __kick_osd_requests(struct ceph_osd_client *osdc, | |
677 | struct ceph_osd *osd) | |
678 | { | |
a40c4f10 | 679 | struct ceph_osd_request *req, *nreq; |
e02493c0 | 680 | LIST_HEAD(resend); |
6f6c7006 SW |
681 | int err; |
682 | ||
683 | dout("__kick_osd_requests osd%d\n", osd->o_osd); | |
684 | err = __reset_osd(osdc, osd); | |
685a7555 | 685 | if (err) |
6f6c7006 | 686 | return; |
e02493c0 AE |
687 | /* |
688 | * Build up a list of requests to resend by traversing the | |
689 | * osd's list of requests. Requests for a given object are | |
690 | * sent in tid order, and that is also the order they're | |
691 | * kept on this list. Therefore all requests that are in | |
692 | * flight will be found first, followed by all requests that | |
693 | * have not yet been sent. And to resend requests while | |
694 | * preserving this order we will want to put any sent | |
695 | * requests back on the front of the osd client's unsent | |
696 | * list. | |
697 | * | |
698 | * So we build a separate ordered list of already-sent | |
699 | * requests for the affected osd and splice it onto the | |
700 | * front of the osd client's unsent list. Once we've seen a | |
701 | * request that has not yet been sent we're done. Those | |
702 | * requests are already sitting right where they belong. | |
703 | */ | |
6f6c7006 | 704 | list_for_each_entry(req, &osd->o_requests, r_osd_item) { |
e02493c0 AE |
705 | if (!req->r_sent) |
706 | break; | |
707 | list_move_tail(&req->r_req_lru_item, &resend); | |
708 | dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, | |
6f6c7006 | 709 | osd->o_osd); |
a40c4f10 YS |
710 | if (!req->r_linger) |
711 | req->r_flags |= CEPH_OSD_FLAG_RETRY; | |
712 | } | |
e02493c0 | 713 | list_splice(&resend, &osdc->req_unsent); |
a40c4f10 | 714 | |
e02493c0 AE |
715 | /* |
716 | * Linger requests are re-registered before sending, which | |
717 | * sets up a new tid for each. We add them to the unsent | |
718 | * list at the end to keep things in tid order. | |
719 | */ | |
a40c4f10 YS |
720 | list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, |
721 | r_linger_osd) { | |
77f38e0e SW |
722 | /* |
723 | * reregister request prior to unregistering linger so | |
724 | * that r_osd is preserved. | |
725 | */ | |
726 | BUG_ON(!list_empty(&req->r_req_lru_item)); | |
a40c4f10 | 727 | __register_request(osdc, req); |
e02493c0 | 728 | list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); |
ad885927 | 729 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); |
77f38e0e | 730 | __unregister_linger_request(osdc, req); |
a40c4f10 YS |
731 | dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, |
732 | osd->o_osd); | |
6f6c7006 SW |
733 | } |
734 | } | |
735 | ||
f24e9980 | 736 | /* |
81b024e7 | 737 | * If the osd connection drops, we need to resubmit all requests. |
f24e9980 SW |
738 | */ |
739 | static void osd_reset(struct ceph_connection *con) | |
740 | { | |
741 | struct ceph_osd *osd = con->private; | |
742 | struct ceph_osd_client *osdc; | |
743 | ||
744 | if (!osd) | |
745 | return; | |
746 | dout("osd_reset osd%d\n", osd->o_osd); | |
747 | osdc = osd->o_osdc; | |
f24e9980 | 748 | down_read(&osdc->map_sem); |
83aff95e SW |
749 | mutex_lock(&osdc->request_mutex); |
750 | __kick_osd_requests(osdc, osd); | |
f9d25199 | 751 | __send_queued(osdc); |
83aff95e | 752 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
753 | up_read(&osdc->map_sem); |
754 | } | |
755 | ||
756 | /* | |
757 | * Track open sessions with osds. | |
758 | */ | |
e10006f8 | 759 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
760 | { |
761 | struct ceph_osd *osd; | |
762 | ||
763 | osd = kzalloc(sizeof(*osd), GFP_NOFS); | |
764 | if (!osd) | |
765 | return NULL; | |
766 | ||
767 | atomic_set(&osd->o_ref, 1); | |
768 | osd->o_osdc = osdc; | |
e10006f8 | 769 | osd->o_osd = onum; |
f407731d | 770 | RB_CLEAR_NODE(&osd->o_node); |
f24e9980 | 771 | INIT_LIST_HEAD(&osd->o_requests); |
a40c4f10 | 772 | INIT_LIST_HEAD(&osd->o_linger_requests); |
f5a2041b | 773 | INIT_LIST_HEAD(&osd->o_osd_lru); |
f24e9980 SW |
774 | osd->o_incarnation = 1; |
775 | ||
b7a9e5dd | 776 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 777 | |
422d2cb8 | 778 | INIT_LIST_HEAD(&osd->o_keepalive_item); |
f24e9980 SW |
779 | return osd; |
780 | } | |
781 | ||
782 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
783 | { | |
784 | if (atomic_inc_not_zero(&osd->o_ref)) { | |
785 | dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, | |
786 | atomic_read(&osd->o_ref)); | |
787 | return osd; | |
788 | } else { | |
789 | dout("get_osd %p FAIL\n", osd); | |
790 | return NULL; | |
791 | } | |
792 | } | |
793 | ||
794 | static void put_osd(struct ceph_osd *osd) | |
795 | { | |
796 | dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), | |
797 | atomic_read(&osd->o_ref) - 1); | |
a255651d | 798 | if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { |
79494d1b SW |
799 | struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; |
800 | ||
27859f97 | 801 | ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); |
f24e9980 | 802 | kfree(osd); |
79494d1b | 803 | } |
f24e9980 SW |
804 | } |
805 | ||
806 | /* | |
807 | * remove an osd from our map | |
808 | */ | |
f5a2041b | 809 | static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 810 | { |
f5a2041b | 811 | dout("__remove_osd %p\n", osd); |
f24e9980 SW |
812 | BUG_ON(!list_empty(&osd->o_requests)); |
813 | rb_erase(&osd->o_node, &osdc->osds); | |
f5a2041b | 814 | list_del_init(&osd->o_osd_lru); |
f24e9980 SW |
815 | ceph_con_close(&osd->o_con); |
816 | put_osd(osd); | |
817 | } | |
818 | ||
aca420bc SW |
819 | static void remove_all_osds(struct ceph_osd_client *osdc) |
820 | { | |
048a9d2d | 821 | dout("%s %p\n", __func__, osdc); |
aca420bc SW |
822 | mutex_lock(&osdc->request_mutex); |
823 | while (!RB_EMPTY_ROOT(&osdc->osds)) { | |
824 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
825 | struct ceph_osd, o_node); | |
826 | __remove_osd(osdc, osd); | |
827 | } | |
828 | mutex_unlock(&osdc->request_mutex); | |
829 | } | |
830 | ||
f5a2041b YS |
831 | static void __move_osd_to_lru(struct ceph_osd_client *osdc, |
832 | struct ceph_osd *osd) | |
833 | { | |
834 | dout("__move_osd_to_lru %p\n", osd); | |
835 | BUG_ON(!list_empty(&osd->o_osd_lru)); | |
836 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); | |
3d14c5d2 | 837 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; |
f5a2041b YS |
838 | } |
839 | ||
840 | static void __remove_osd_from_lru(struct ceph_osd *osd) | |
841 | { | |
842 | dout("__remove_osd_from_lru %p\n", osd); | |
843 | if (!list_empty(&osd->o_osd_lru)) | |
844 | list_del_init(&osd->o_osd_lru); | |
845 | } | |
846 | ||
aca420bc | 847 | static void remove_old_osds(struct ceph_osd_client *osdc) |
f5a2041b YS |
848 | { |
849 | struct ceph_osd *osd, *nosd; | |
850 | ||
851 | dout("__remove_old_osds %p\n", osdc); | |
852 | mutex_lock(&osdc->request_mutex); | |
853 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { | |
aca420bc | 854 | if (time_before(jiffies, osd->lru_ttl)) |
f5a2041b YS |
855 | break; |
856 | __remove_osd(osdc, osd); | |
857 | } | |
858 | mutex_unlock(&osdc->request_mutex); | |
859 | } | |
860 | ||
f24e9980 SW |
861 | /* |
862 | * reset osd connect | |
863 | */ | |
f5a2041b | 864 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 865 | { |
c3acb181 | 866 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 867 | |
f5a2041b | 868 | dout("__reset_osd %p osd%d\n", osd, osd->o_osd); |
a40c4f10 YS |
869 | if (list_empty(&osd->o_requests) && |
870 | list_empty(&osd->o_linger_requests)) { | |
f5a2041b | 871 | __remove_osd(osdc, osd); |
c3acb181 AE |
872 | |
873 | return -ENODEV; | |
874 | } | |
875 | ||
876 | peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; | |
877 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && | |
878 | !ceph_con_opened(&osd->o_con)) { | |
879 | struct ceph_osd_request *req; | |
880 | ||
87b315a5 SW |
881 | dout(" osd addr hasn't changed and connection never opened," |
882 | " letting msgr retry"); | |
883 | /* touch each r_stamp for handle_timeout()'s benfit */ | |
884 | list_for_each_entry(req, &osd->o_requests, r_osd_item) | |
885 | req->r_stamp = jiffies; | |
c3acb181 AE |
886 | |
887 | return -EAGAIN; | |
f24e9980 | 888 | } |
c3acb181 AE |
889 | |
890 | ceph_con_close(&osd->o_con); | |
891 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
892 | osd->o_incarnation++; | |
893 | ||
894 | return 0; | |
f24e9980 SW |
895 | } |
896 | ||
897 | static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) | |
898 | { | |
899 | struct rb_node **p = &osdc->osds.rb_node; | |
900 | struct rb_node *parent = NULL; | |
901 | struct ceph_osd *osd = NULL; | |
902 | ||
aca420bc | 903 | dout("__insert_osd %p osd%d\n", new, new->o_osd); |
f24e9980 SW |
904 | while (*p) { |
905 | parent = *p; | |
906 | osd = rb_entry(parent, struct ceph_osd, o_node); | |
907 | if (new->o_osd < osd->o_osd) | |
908 | p = &(*p)->rb_left; | |
909 | else if (new->o_osd > osd->o_osd) | |
910 | p = &(*p)->rb_right; | |
911 | else | |
912 | BUG(); | |
913 | } | |
914 | ||
915 | rb_link_node(&new->o_node, parent, p); | |
916 | rb_insert_color(&new->o_node, &osdc->osds); | |
917 | } | |
918 | ||
919 | static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) | |
920 | { | |
921 | struct ceph_osd *osd; | |
922 | struct rb_node *n = osdc->osds.rb_node; | |
923 | ||
924 | while (n) { | |
925 | osd = rb_entry(n, struct ceph_osd, o_node); | |
926 | if (o < osd->o_osd) | |
927 | n = n->rb_left; | |
928 | else if (o > osd->o_osd) | |
929 | n = n->rb_right; | |
930 | else | |
931 | return osd; | |
932 | } | |
933 | return NULL; | |
934 | } | |
935 | ||
422d2cb8 YS |
936 | static void __schedule_osd_timeout(struct ceph_osd_client *osdc) |
937 | { | |
938 | schedule_delayed_work(&osdc->timeout_work, | |
3d14c5d2 | 939 | osdc->client->options->osd_keepalive_timeout * HZ); |
422d2cb8 YS |
940 | } |
941 | ||
942 | static void __cancel_osd_timeout(struct ceph_osd_client *osdc) | |
943 | { | |
944 | cancel_delayed_work(&osdc->timeout_work); | |
945 | } | |
f24e9980 SW |
946 | |
947 | /* | |
948 | * Register request, assign tid. If this is the first request, set up | |
949 | * the timeout event. | |
950 | */ | |
a40c4f10 YS |
951 | static void __register_request(struct ceph_osd_client *osdc, |
952 | struct ceph_osd_request *req) | |
f24e9980 | 953 | { |
f24e9980 | 954 | req->r_tid = ++osdc->last_tid; |
6df058c0 | 955 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); |
77f38e0e | 956 | dout("__register_request %p tid %lld\n", req, req->r_tid); |
f24e9980 SW |
957 | __insert_request(osdc, req); |
958 | ceph_osdc_get_request(req); | |
959 | osdc->num_requests++; | |
f24e9980 | 960 | if (osdc->num_requests == 1) { |
422d2cb8 YS |
961 | dout(" first request, scheduling timeout\n"); |
962 | __schedule_osd_timeout(osdc); | |
f24e9980 | 963 | } |
a40c4f10 YS |
964 | } |
965 | ||
f24e9980 SW |
966 | /* |
967 | * called under osdc->request_mutex | |
968 | */ | |
969 | static void __unregister_request(struct ceph_osd_client *osdc, | |
970 | struct ceph_osd_request *req) | |
971 | { | |
35f9f8a0 SW |
972 | if (RB_EMPTY_NODE(&req->r_node)) { |
973 | dout("__unregister_request %p tid %lld not registered\n", | |
974 | req, req->r_tid); | |
975 | return; | |
976 | } | |
977 | ||
f24e9980 SW |
978 | dout("__unregister_request %p tid %lld\n", req, req->r_tid); |
979 | rb_erase(&req->r_node, &osdc->requests); | |
980 | osdc->num_requests--; | |
981 | ||
0ba6478d SW |
982 | if (req->r_osd) { |
983 | /* make sure the original request isn't in flight. */ | |
6740a845 | 984 | ceph_msg_revoke(req->r_request); |
0ba6478d SW |
985 | |
986 | list_del_init(&req->r_osd_item); | |
a40c4f10 YS |
987 | if (list_empty(&req->r_osd->o_requests) && |
988 | list_empty(&req->r_osd->o_linger_requests)) { | |
989 | dout("moving osd to %p lru\n", req->r_osd); | |
f5a2041b | 990 | __move_osd_to_lru(osdc, req->r_osd); |
a40c4f10 | 991 | } |
fbdb9190 | 992 | if (list_empty(&req->r_linger_item)) |
a40c4f10 | 993 | req->r_osd = NULL; |
0ba6478d | 994 | } |
f24e9980 | 995 | |
7d5f2481 | 996 | list_del_init(&req->r_req_lru_item); |
f24e9980 SW |
997 | ceph_osdc_put_request(req); |
998 | ||
422d2cb8 YS |
999 | if (osdc->num_requests == 0) { |
1000 | dout(" no requests, canceling timeout\n"); | |
1001 | __cancel_osd_timeout(osdc); | |
f24e9980 SW |
1002 | } |
1003 | } | |
1004 | ||
1005 | /* | |
1006 | * Cancel a previously queued request message | |
1007 | */ | |
1008 | static void __cancel_request(struct ceph_osd_request *req) | |
1009 | { | |
6bc18876 | 1010 | if (req->r_sent && req->r_osd) { |
6740a845 | 1011 | ceph_msg_revoke(req->r_request); |
f24e9980 SW |
1012 | req->r_sent = 0; |
1013 | } | |
1014 | } | |
1015 | ||
a40c4f10 YS |
1016 | static void __register_linger_request(struct ceph_osd_client *osdc, |
1017 | struct ceph_osd_request *req) | |
1018 | { | |
1019 | dout("__register_linger_request %p\n", req); | |
1020 | list_add_tail(&req->r_linger_item, &osdc->req_linger); | |
6194ea89 SW |
1021 | if (req->r_osd) |
1022 | list_add_tail(&req->r_linger_osd, | |
1023 | &req->r_osd->o_linger_requests); | |
a40c4f10 YS |
1024 | } |
1025 | ||
1026 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
1027 | struct ceph_osd_request *req) | |
1028 | { | |
1029 | dout("__unregister_linger_request %p\n", req); | |
61c74035 | 1030 | list_del_init(&req->r_linger_item); |
a40c4f10 | 1031 | if (req->r_osd) { |
a40c4f10 YS |
1032 | list_del_init(&req->r_linger_osd); |
1033 | ||
1034 | if (list_empty(&req->r_osd->o_requests) && | |
1035 | list_empty(&req->r_osd->o_linger_requests)) { | |
1036 | dout("moving osd to %p lru\n", req->r_osd); | |
1037 | __move_osd_to_lru(osdc, req->r_osd); | |
1038 | } | |
fbdb9190 SW |
1039 | if (list_empty(&req->r_osd_item)) |
1040 | req->r_osd = NULL; | |
a40c4f10 YS |
1041 | } |
1042 | } | |
1043 | ||
1044 | void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, | |
1045 | struct ceph_osd_request *req) | |
1046 | { | |
1047 | mutex_lock(&osdc->request_mutex); | |
1048 | if (req->r_linger) { | |
1049 | __unregister_linger_request(osdc, req); | |
1050 | ceph_osdc_put_request(req); | |
1051 | } | |
1052 | mutex_unlock(&osdc->request_mutex); | |
1053 | } | |
1054 | EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); | |
1055 | ||
1056 | void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, | |
1057 | struct ceph_osd_request *req) | |
1058 | { | |
1059 | if (!req->r_linger) { | |
1060 | dout("set_request_linger %p\n", req); | |
1061 | req->r_linger = 1; | |
1062 | /* | |
1063 | * caller is now responsible for calling | |
1064 | * unregister_linger_request | |
1065 | */ | |
1066 | ceph_osdc_get_request(req); | |
1067 | } | |
1068 | } | |
1069 | EXPORT_SYMBOL(ceph_osdc_set_request_linger); | |
1070 | ||
f24e9980 SW |
1071 | /* |
1072 | * Pick an osd (the first 'up' osd in the pg), allocate the osd struct | |
1073 | * (as needed), and set the request r_osd appropriately. If there is | |
25985edc | 1074 | * no up osd, set r_osd to NULL. Move the request to the appropriate list |
6f6c7006 | 1075 | * (unsent, homeless) or leave on in-flight lru. |
f24e9980 SW |
1076 | * |
1077 | * Return 0 if unchanged, 1 if changed, or negative on error. | |
1078 | * | |
1079 | * Caller should hold map_sem for read and request_mutex. | |
1080 | */ | |
6f6c7006 | 1081 | static int __map_request(struct ceph_osd_client *osdc, |
38d6453c | 1082 | struct ceph_osd_request *req, int force_resend) |
f24e9980 | 1083 | { |
5b191d99 | 1084 | struct ceph_pg pgid; |
d85b7056 SW |
1085 | int acting[CEPH_PG_MAX_SIZE]; |
1086 | int o = -1, num = 0; | |
f24e9980 | 1087 | int err; |
f24e9980 | 1088 | |
6f6c7006 | 1089 | dout("map_request %p tid %lld\n", req, req->r_tid); |
41766f87 AE |
1090 | err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, |
1091 | ceph_file_layout_pg_pool(req->r_file_layout)); | |
6f6c7006 SW |
1092 | if (err) { |
1093 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f24e9980 | 1094 | return err; |
6f6c7006 | 1095 | } |
7740a42f SW |
1096 | req->r_pgid = pgid; |
1097 | ||
d85b7056 SW |
1098 | err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); |
1099 | if (err > 0) { | |
1100 | o = acting[0]; | |
1101 | num = err; | |
1102 | } | |
f24e9980 | 1103 | |
38d6453c SW |
1104 | if ((!force_resend && |
1105 | req->r_osd && req->r_osd->o_osd == o && | |
d85b7056 SW |
1106 | req->r_sent >= req->r_osd->o_incarnation && |
1107 | req->r_num_pg_osds == num && | |
1108 | memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || | |
f24e9980 SW |
1109 | (req->r_osd == NULL && o == -1)) |
1110 | return 0; /* no change */ | |
1111 | ||
5b191d99 SW |
1112 | dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", |
1113 | req->r_tid, pgid.pool, pgid.seed, o, | |
f24e9980 SW |
1114 | req->r_osd ? req->r_osd->o_osd : -1); |
1115 | ||
d85b7056 SW |
1116 | /* record full pg acting set */ |
1117 | memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); | |
1118 | req->r_num_pg_osds = num; | |
1119 | ||
f24e9980 SW |
1120 | if (req->r_osd) { |
1121 | __cancel_request(req); | |
1122 | list_del_init(&req->r_osd_item); | |
f24e9980 SW |
1123 | req->r_osd = NULL; |
1124 | } | |
1125 | ||
1126 | req->r_osd = __lookup_osd(osdc, o); | |
1127 | if (!req->r_osd && o >= 0) { | |
c99eb1c7 | 1128 | err = -ENOMEM; |
e10006f8 | 1129 | req->r_osd = create_osd(osdc, o); |
6f6c7006 SW |
1130 | if (!req->r_osd) { |
1131 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
c99eb1c7 | 1132 | goto out; |
6f6c7006 | 1133 | } |
f24e9980 | 1134 | |
6f6c7006 | 1135 | dout("map_request osd %p is osd%d\n", req->r_osd, o); |
f24e9980 SW |
1136 | __insert_osd(osdc, req->r_osd); |
1137 | ||
b7a9e5dd SW |
1138 | ceph_con_open(&req->r_osd->o_con, |
1139 | CEPH_ENTITY_TYPE_OSD, o, | |
1140 | &osdc->osdmap->osd_addr[o]); | |
f24e9980 SW |
1141 | } |
1142 | ||
f5a2041b YS |
1143 | if (req->r_osd) { |
1144 | __remove_osd_from_lru(req->r_osd); | |
ad885927 AE |
1145 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); |
1146 | list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); | |
6f6c7006 | 1147 | } else { |
ad885927 | 1148 | list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); |
f5a2041b | 1149 | } |
d85b7056 | 1150 | err = 1; /* osd or pg changed */ |
f24e9980 SW |
1151 | |
1152 | out: | |
f24e9980 SW |
1153 | return err; |
1154 | } | |
1155 | ||
1156 | /* | |
1157 | * caller should hold map_sem (for read) and request_mutex | |
1158 | */ | |
56e925b6 SW |
1159 | static void __send_request(struct ceph_osd_client *osdc, |
1160 | struct ceph_osd_request *req) | |
f24e9980 | 1161 | { |
1b83bef2 | 1162 | void *p; |
f24e9980 | 1163 | |
1b83bef2 SW |
1164 | dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", |
1165 | req, req->r_tid, req->r_osd->o_osd, req->r_flags, | |
1166 | (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); | |
1167 | ||
1168 | /* fill in message content that changes each time we send it */ | |
1169 | put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); | |
1170 | put_unaligned_le32(req->r_flags, req->r_request_flags); | |
1171 | put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); | |
1172 | p = req->r_request_pgid; | |
1173 | ceph_encode_64(&p, req->r_pgid.pool); | |
1174 | ceph_encode_32(&p, req->r_pgid.seed); | |
1175 | put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ | |
1176 | memcpy(req->r_request_reassert_version, &req->r_reassert_version, | |
1177 | sizeof(req->r_reassert_version)); | |
2169aea6 | 1178 | |
3dd72fc0 | 1179 | req->r_stamp = jiffies; |
07a27e22 | 1180 | list_move_tail(&req->r_req_lru_item, &osdc->req_lru); |
f24e9980 SW |
1181 | |
1182 | ceph_msg_get(req->r_request); /* send consumes a ref */ | |
1183 | ceph_con_send(&req->r_osd->o_con, req->r_request); | |
1184 | req->r_sent = req->r_osd->o_incarnation; | |
f24e9980 SW |
1185 | } |
1186 | ||
6f6c7006 SW |
1187 | /* |
1188 | * Send any requests in the queue (req_unsent). | |
1189 | */ | |
f9d25199 | 1190 | static void __send_queued(struct ceph_osd_client *osdc) |
6f6c7006 SW |
1191 | { |
1192 | struct ceph_osd_request *req, *tmp; | |
1193 | ||
f9d25199 AE |
1194 | dout("__send_queued\n"); |
1195 | list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) | |
6f6c7006 | 1196 | __send_request(osdc, req); |
6f6c7006 SW |
1197 | } |
1198 | ||
f24e9980 SW |
1199 | /* |
1200 | * Timeout callback, called every N seconds when 1 or more osd | |
1201 | * requests has been active for more than N seconds. When this | |
1202 | * happens, we ping all OSDs with requests who have timed out to | |
1203 | * ensure any communications channel reset is detected. Reset the | |
1204 | * request timeouts another N seconds in the future as we go. | |
1205 | * Reschedule the timeout event another N seconds in future (unless | |
1206 | * there are no open requests). | |
1207 | */ | |
1208 | static void handle_timeout(struct work_struct *work) | |
1209 | { | |
1210 | struct ceph_osd_client *osdc = | |
1211 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
83aff95e | 1212 | struct ceph_osd_request *req; |
f24e9980 | 1213 | struct ceph_osd *osd; |
422d2cb8 | 1214 | unsigned long keepalive = |
3d14c5d2 | 1215 | osdc->client->options->osd_keepalive_timeout * HZ; |
422d2cb8 | 1216 | struct list_head slow_osds; |
f24e9980 SW |
1217 | dout("timeout\n"); |
1218 | down_read(&osdc->map_sem); | |
1219 | ||
1220 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1221 | ||
1222 | mutex_lock(&osdc->request_mutex); | |
f24e9980 | 1223 | |
422d2cb8 YS |
1224 | /* |
1225 | * ping osds that are a bit slow. this ensures that if there | |
1226 | * is a break in the TCP connection we will notice, and reopen | |
1227 | * a connection with that osd (from the fault callback). | |
1228 | */ | |
1229 | INIT_LIST_HEAD(&slow_osds); | |
1230 | list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { | |
3dd72fc0 | 1231 | if (time_before(jiffies, req->r_stamp + keepalive)) |
422d2cb8 YS |
1232 | break; |
1233 | ||
1234 | osd = req->r_osd; | |
1235 | BUG_ON(!osd); | |
1236 | dout(" tid %llu is slow, will send keepalive on osd%d\n", | |
f24e9980 | 1237 | req->r_tid, osd->o_osd); |
422d2cb8 YS |
1238 | list_move_tail(&osd->o_keepalive_item, &slow_osds); |
1239 | } | |
1240 | while (!list_empty(&slow_osds)) { | |
1241 | osd = list_entry(slow_osds.next, struct ceph_osd, | |
1242 | o_keepalive_item); | |
1243 | list_del_init(&osd->o_keepalive_item); | |
f24e9980 SW |
1244 | ceph_con_keepalive(&osd->o_con); |
1245 | } | |
1246 | ||
422d2cb8 | 1247 | __schedule_osd_timeout(osdc); |
f9d25199 | 1248 | __send_queued(osdc); |
f24e9980 | 1249 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1250 | up_read(&osdc->map_sem); |
1251 | } | |
1252 | ||
f5a2041b YS |
1253 | static void handle_osds_timeout(struct work_struct *work) |
1254 | { | |
1255 | struct ceph_osd_client *osdc = | |
1256 | container_of(work, struct ceph_osd_client, | |
1257 | osds_timeout_work.work); | |
1258 | unsigned long delay = | |
3d14c5d2 | 1259 | osdc->client->options->osd_idle_ttl * HZ >> 2; |
f5a2041b YS |
1260 | |
1261 | dout("osds timeout\n"); | |
1262 | down_read(&osdc->map_sem); | |
aca420bc | 1263 | remove_old_osds(osdc); |
f5a2041b YS |
1264 | up_read(&osdc->map_sem); |
1265 | ||
1266 | schedule_delayed_work(&osdc->osds_timeout_work, | |
1267 | round_jiffies_relative(delay)); | |
1268 | } | |
1269 | ||
25845472 SW |
1270 | static void complete_request(struct ceph_osd_request *req) |
1271 | { | |
1272 | if (req->r_safe_callback) | |
1273 | req->r_safe_callback(req, NULL); | |
1274 | complete_all(&req->r_safe_completion); /* fsync waiter */ | |
1275 | } | |
1276 | ||
f24e9980 SW |
1277 | /* |
1278 | * handle osd op reply. either call the callback if it is specified, | |
1279 | * or do the completion to wake up the waiting thread. | |
1280 | */ | |
350b1c32 SW |
1281 | static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, |
1282 | struct ceph_connection *con) | |
f24e9980 | 1283 | { |
1b83bef2 | 1284 | void *p, *end; |
f24e9980 SW |
1285 | struct ceph_osd_request *req; |
1286 | u64 tid; | |
1b83bef2 | 1287 | int object_len; |
79528734 AE |
1288 | unsigned int numops; |
1289 | int payload_len, flags; | |
0ceed5db | 1290 | s32 result; |
1b83bef2 SW |
1291 | s32 retry_attempt; |
1292 | struct ceph_pg pg; | |
1293 | int err; | |
1294 | u32 reassert_epoch; | |
1295 | u64 reassert_version; | |
1296 | u32 osdmap_epoch; | |
0d5af164 | 1297 | int already_completed; |
9fc6e064 | 1298 | u32 bytes; |
79528734 | 1299 | unsigned int i; |
f24e9980 | 1300 | |
6df058c0 | 1301 | tid = le64_to_cpu(msg->hdr.tid); |
1b83bef2 SW |
1302 | dout("handle_reply %p tid %llu\n", msg, tid); |
1303 | ||
1304 | p = msg->front.iov_base; | |
1305 | end = p + msg->front.iov_len; | |
1306 | ||
1307 | ceph_decode_need(&p, end, 4, bad); | |
1308 | object_len = ceph_decode_32(&p); | |
1309 | ceph_decode_need(&p, end, object_len, bad); | |
1310 | p += object_len; | |
1311 | ||
ef4859d6 | 1312 | err = ceph_decode_pgid(&p, end, &pg); |
1b83bef2 | 1313 | if (err) |
f24e9980 | 1314 | goto bad; |
1b83bef2 SW |
1315 | |
1316 | ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); | |
1317 | flags = ceph_decode_64(&p); | |
1318 | result = ceph_decode_32(&p); | |
1319 | reassert_epoch = ceph_decode_32(&p); | |
1320 | reassert_version = ceph_decode_64(&p); | |
1321 | osdmap_epoch = ceph_decode_32(&p); | |
1322 | ||
f24e9980 SW |
1323 | /* lookup */ |
1324 | mutex_lock(&osdc->request_mutex); | |
1325 | req = __lookup_request(osdc, tid); | |
1326 | if (req == NULL) { | |
1327 | dout("handle_reply tid %llu dne\n", tid); | |
8058fd45 | 1328 | goto bad_mutex; |
f24e9980 SW |
1329 | } |
1330 | ceph_osdc_get_request(req); | |
1b83bef2 SW |
1331 | |
1332 | dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, | |
1333 | req, result); | |
1334 | ||
1335 | ceph_decode_need(&p, end, 4, bad); | |
1336 | numops = ceph_decode_32(&p); | |
1337 | if (numops > CEPH_OSD_MAX_OP) | |
1338 | goto bad_put; | |
1339 | if (numops != req->r_num_ops) | |
1340 | goto bad_put; | |
1341 | payload_len = 0; | |
1342 | ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); | |
1343 | for (i = 0; i < numops; i++) { | |
1344 | struct ceph_osd_op *op = p; | |
1345 | int len; | |
1346 | ||
1347 | len = le32_to_cpu(op->payload_len); | |
1348 | req->r_reply_op_len[i] = len; | |
1349 | dout(" op %d has %d bytes\n", i, len); | |
1350 | payload_len += len; | |
1351 | p += sizeof(*op); | |
1352 | } | |
9fc6e064 AE |
1353 | bytes = le32_to_cpu(msg->hdr.data_len); |
1354 | if (payload_len != bytes) { | |
1b83bef2 | 1355 | pr_warning("sum of op payload lens %d != data_len %d", |
9fc6e064 | 1356 | payload_len, bytes); |
1b83bef2 SW |
1357 | goto bad_put; |
1358 | } | |
1359 | ||
1360 | ceph_decode_need(&p, end, 4 + numops * 4, bad); | |
1361 | retry_attempt = ceph_decode_32(&p); | |
1362 | for (i = 0; i < numops; i++) | |
1363 | req->r_reply_op_result[i] = ceph_decode_32(&p); | |
f24e9980 | 1364 | |
f24e9980 | 1365 | if (!req->r_got_reply) { |
f24e9980 | 1366 | |
1b83bef2 | 1367 | req->r_result = result; |
f24e9980 SW |
1368 | dout("handle_reply result %d bytes %d\n", req->r_result, |
1369 | bytes); | |
1370 | if (req->r_result == 0) | |
1371 | req->r_result = bytes; | |
1372 | ||
1373 | /* in case this is a write and we need to replay, */ | |
1b83bef2 SW |
1374 | req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); |
1375 | req->r_reassert_version.version = cpu_to_le64(reassert_version); | |
f24e9980 SW |
1376 | |
1377 | req->r_got_reply = 1; | |
1378 | } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { | |
1379 | dout("handle_reply tid %llu dup ack\n", tid); | |
34b43a56 | 1380 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1381 | goto done; |
1382 | } | |
1383 | ||
1384 | dout("handle_reply tid %llu flags %d\n", tid, flags); | |
1385 | ||
a40c4f10 YS |
1386 | if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) |
1387 | __register_linger_request(osdc, req); | |
1388 | ||
f24e9980 | 1389 | /* either this is a read, or we got the safe response */ |
0ceed5db SW |
1390 | if (result < 0 || |
1391 | (flags & CEPH_OSD_FLAG_ONDISK) || | |
f24e9980 SW |
1392 | ((flags & CEPH_OSD_FLAG_WRITE) == 0)) |
1393 | __unregister_request(osdc, req); | |
1394 | ||
0d5af164 AE |
1395 | already_completed = req->r_completed; |
1396 | req->r_completed = 1; | |
f24e9980 | 1397 | mutex_unlock(&osdc->request_mutex); |
0d5af164 AE |
1398 | if (already_completed) |
1399 | goto done; | |
f24e9980 SW |
1400 | |
1401 | if (req->r_callback) | |
1402 | req->r_callback(req, msg); | |
1403 | else | |
03066f23 | 1404 | complete_all(&req->r_completion); |
f24e9980 | 1405 | |
25845472 SW |
1406 | if (flags & CEPH_OSD_FLAG_ONDISK) |
1407 | complete_request(req); | |
f24e9980 SW |
1408 | |
1409 | done: | |
a40c4f10 | 1410 | dout("req=%p req->r_linger=%d\n", req, req->r_linger); |
f24e9980 SW |
1411 | ceph_osdc_put_request(req); |
1412 | return; | |
1413 | ||
1b83bef2 SW |
1414 | bad_put: |
1415 | ceph_osdc_put_request(req); | |
8058fd45 AE |
1416 | bad_mutex: |
1417 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 1418 | bad: |
1b83bef2 SW |
1419 | pr_err("corrupt osd_op_reply got %d %d\n", |
1420 | (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); | |
9ec7cab1 | 1421 | ceph_msg_dump(msg); |
f24e9980 SW |
1422 | } |
1423 | ||
6f6c7006 | 1424 | static void reset_changed_osds(struct ceph_osd_client *osdc) |
f24e9980 | 1425 | { |
f24e9980 | 1426 | struct rb_node *p, *n; |
f24e9980 | 1427 | |
6f6c7006 SW |
1428 | for (p = rb_first(&osdc->osds); p; p = n) { |
1429 | struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); | |
f24e9980 | 1430 | |
6f6c7006 SW |
1431 | n = rb_next(p); |
1432 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
1433 | memcmp(&osd->o_con.peer_addr, | |
1434 | ceph_osd_addr(osdc->osdmap, | |
1435 | osd->o_osd), | |
1436 | sizeof(struct ceph_entity_addr)) != 0) | |
1437 | __reset_osd(osdc, osd); | |
f24e9980 | 1438 | } |
422d2cb8 YS |
1439 | } |
1440 | ||
1441 | /* | |
6f6c7006 SW |
1442 | * Requeue requests whose mapping to an OSD has changed. If requests map to |
1443 | * no osd, request a new map. | |
422d2cb8 | 1444 | * |
e6d50f67 | 1445 | * Caller should hold map_sem for read. |
422d2cb8 | 1446 | */ |
38d6453c | 1447 | static void kick_requests(struct ceph_osd_client *osdc, int force_resend) |
422d2cb8 | 1448 | { |
a40c4f10 | 1449 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
1450 | struct rb_node *p; |
1451 | int needmap = 0; | |
1452 | int err; | |
422d2cb8 | 1453 | |
38d6453c | 1454 | dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); |
422d2cb8 | 1455 | mutex_lock(&osdc->request_mutex); |
6194ea89 | 1456 | for (p = rb_first(&osdc->requests); p; ) { |
6f6c7006 | 1457 | req = rb_entry(p, struct ceph_osd_request, r_node); |
6194ea89 | 1458 | p = rb_next(p); |
ab60b16d AE |
1459 | |
1460 | /* | |
1461 | * For linger requests that have not yet been | |
1462 | * registered, move them to the linger list; they'll | |
1463 | * be sent to the osd in the loop below. Unregister | |
1464 | * the request before re-registering it as a linger | |
1465 | * request to ensure the __map_request() below | |
1466 | * will decide it needs to be sent. | |
1467 | */ | |
1468 | if (req->r_linger && list_empty(&req->r_linger_item)) { | |
1469 | dout("%p tid %llu restart on osd%d\n", | |
1470 | req, req->r_tid, | |
1471 | req->r_osd ? req->r_osd->o_osd : -1); | |
1472 | __unregister_request(osdc, req); | |
1473 | __register_linger_request(osdc, req); | |
1474 | continue; | |
1475 | } | |
1476 | ||
38d6453c | 1477 | err = __map_request(osdc, req, force_resend); |
6f6c7006 SW |
1478 | if (err < 0) |
1479 | continue; /* error */ | |
1480 | if (req->r_osd == NULL) { | |
1481 | dout("%p tid %llu maps to no osd\n", req, req->r_tid); | |
1482 | needmap++; /* request a newer map */ | |
1483 | } else if (err > 0) { | |
6194ea89 SW |
1484 | if (!req->r_linger) { |
1485 | dout("%p tid %llu requeued on osd%d\n", req, | |
1486 | req->r_tid, | |
1487 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1488 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
6194ea89 SW |
1489 | } |
1490 | } | |
a40c4f10 YS |
1491 | } |
1492 | ||
1493 | list_for_each_entry_safe(req, nreq, &osdc->req_linger, | |
1494 | r_linger_item) { | |
1495 | dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); | |
1496 | ||
38d6453c | 1497 | err = __map_request(osdc, req, force_resend); |
ab60b16d | 1498 | dout("__map_request returned %d\n", err); |
a40c4f10 YS |
1499 | if (err == 0) |
1500 | continue; /* no change and no osd was specified */ | |
1501 | if (err < 0) | |
1502 | continue; /* hrm! */ | |
1503 | if (req->r_osd == NULL) { | |
1504 | dout("tid %llu maps to no valid osd\n", req->r_tid); | |
1505 | needmap++; /* request a newer map */ | |
1506 | continue; | |
6f6c7006 | 1507 | } |
a40c4f10 YS |
1508 | |
1509 | dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, | |
1510 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1511 | __register_request(osdc, req); |
c89ce05e | 1512 | __unregister_linger_request(osdc, req); |
6f6c7006 | 1513 | } |
f24e9980 SW |
1514 | mutex_unlock(&osdc->request_mutex); |
1515 | ||
1516 | if (needmap) { | |
1517 | dout("%d requests for down osds, need new map\n", needmap); | |
1518 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1519 | } | |
e6d50f67 | 1520 | reset_changed_osds(osdc); |
422d2cb8 | 1521 | } |
6f6c7006 SW |
1522 | |
1523 | ||
f24e9980 SW |
1524 | /* |
1525 | * Process updated osd map. | |
1526 | * | |
1527 | * The message contains any number of incremental and full maps, normally | |
1528 | * indicating some sort of topology change in the cluster. Kick requests | |
1529 | * off to different OSDs as needed. | |
1530 | */ | |
1531 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
1532 | { | |
1533 | void *p, *end, *next; | |
1534 | u32 nr_maps, maplen; | |
1535 | u32 epoch; | |
1536 | struct ceph_osdmap *newmap = NULL, *oldmap; | |
1537 | int err; | |
1538 | struct ceph_fsid fsid; | |
1539 | ||
1540 | dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); | |
1541 | p = msg->front.iov_base; | |
1542 | end = p + msg->front.iov_len; | |
1543 | ||
1544 | /* verify fsid */ | |
1545 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
1546 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d SW |
1547 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
1548 | return; | |
f24e9980 SW |
1549 | |
1550 | down_write(&osdc->map_sem); | |
1551 | ||
1552 | /* incremental maps */ | |
1553 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1554 | dout(" %d inc maps\n", nr_maps); | |
1555 | while (nr_maps > 0) { | |
1556 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1557 | epoch = ceph_decode_32(&p); |
1558 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1559 | ceph_decode_need(&p, end, maplen, bad); |
1560 | next = p + maplen; | |
1561 | if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { | |
1562 | dout("applying incremental map %u len %d\n", | |
1563 | epoch, maplen); | |
1564 | newmap = osdmap_apply_incremental(&p, next, | |
1565 | osdc->osdmap, | |
15d9882c | 1566 | &osdc->client->msgr); |
f24e9980 SW |
1567 | if (IS_ERR(newmap)) { |
1568 | err = PTR_ERR(newmap); | |
1569 | goto bad; | |
1570 | } | |
30dc6381 | 1571 | BUG_ON(!newmap); |
f24e9980 SW |
1572 | if (newmap != osdc->osdmap) { |
1573 | ceph_osdmap_destroy(osdc->osdmap); | |
1574 | osdc->osdmap = newmap; | |
1575 | } | |
38d6453c | 1576 | kick_requests(osdc, 0); |
f24e9980 SW |
1577 | } else { |
1578 | dout("ignoring incremental map %u len %d\n", | |
1579 | epoch, maplen); | |
1580 | } | |
1581 | p = next; | |
1582 | nr_maps--; | |
1583 | } | |
1584 | if (newmap) | |
1585 | goto done; | |
1586 | ||
1587 | /* full maps */ | |
1588 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1589 | dout(" %d full maps\n", nr_maps); | |
1590 | while (nr_maps) { | |
1591 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1592 | epoch = ceph_decode_32(&p); |
1593 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1594 | ceph_decode_need(&p, end, maplen, bad); |
1595 | if (nr_maps > 1) { | |
1596 | dout("skipping non-latest full map %u len %d\n", | |
1597 | epoch, maplen); | |
1598 | } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { | |
1599 | dout("skipping full map %u len %d, " | |
1600 | "older than our %u\n", epoch, maplen, | |
1601 | osdc->osdmap->epoch); | |
1602 | } else { | |
38d6453c SW |
1603 | int skipped_map = 0; |
1604 | ||
f24e9980 SW |
1605 | dout("taking full map %u len %d\n", epoch, maplen); |
1606 | newmap = osdmap_decode(&p, p+maplen); | |
1607 | if (IS_ERR(newmap)) { | |
1608 | err = PTR_ERR(newmap); | |
1609 | goto bad; | |
1610 | } | |
30dc6381 | 1611 | BUG_ON(!newmap); |
f24e9980 SW |
1612 | oldmap = osdc->osdmap; |
1613 | osdc->osdmap = newmap; | |
38d6453c SW |
1614 | if (oldmap) { |
1615 | if (oldmap->epoch + 1 < newmap->epoch) | |
1616 | skipped_map = 1; | |
f24e9980 | 1617 | ceph_osdmap_destroy(oldmap); |
38d6453c SW |
1618 | } |
1619 | kick_requests(osdc, skipped_map); | |
f24e9980 SW |
1620 | } |
1621 | p += maplen; | |
1622 | nr_maps--; | |
1623 | } | |
1624 | ||
1625 | done: | |
1626 | downgrade_write(&osdc->map_sem); | |
1627 | ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); | |
cd634fb6 SW |
1628 | |
1629 | /* | |
1630 | * subscribe to subsequent osdmap updates if full to ensure | |
1631 | * we find out when we are no longer full and stop returning | |
1632 | * ENOSPC. | |
1633 | */ | |
1634 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) | |
1635 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1636 | ||
f9d25199 AE |
1637 | mutex_lock(&osdc->request_mutex); |
1638 | __send_queued(osdc); | |
1639 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 1640 | up_read(&osdc->map_sem); |
03066f23 | 1641 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
1642 | return; |
1643 | ||
1644 | bad: | |
1645 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 1646 | ceph_msg_dump(msg); |
f24e9980 SW |
1647 | up_write(&osdc->map_sem); |
1648 | return; | |
1649 | } | |
1650 | ||
a40c4f10 YS |
1651 | /* |
1652 | * watch/notify callback event infrastructure | |
1653 | * | |
1654 | * These callbacks are used both for watch and notify operations. | |
1655 | */ | |
1656 | static void __release_event(struct kref *kref) | |
1657 | { | |
1658 | struct ceph_osd_event *event = | |
1659 | container_of(kref, struct ceph_osd_event, kref); | |
1660 | ||
1661 | dout("__release_event %p\n", event); | |
1662 | kfree(event); | |
1663 | } | |
1664 | ||
1665 | static void get_event(struct ceph_osd_event *event) | |
1666 | { | |
1667 | kref_get(&event->kref); | |
1668 | } | |
1669 | ||
1670 | void ceph_osdc_put_event(struct ceph_osd_event *event) | |
1671 | { | |
1672 | kref_put(&event->kref, __release_event); | |
1673 | } | |
1674 | EXPORT_SYMBOL(ceph_osdc_put_event); | |
1675 | ||
1676 | static void __insert_event(struct ceph_osd_client *osdc, | |
1677 | struct ceph_osd_event *new) | |
1678 | { | |
1679 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1680 | struct rb_node *parent = NULL; | |
1681 | struct ceph_osd_event *event = NULL; | |
1682 | ||
1683 | while (*p) { | |
1684 | parent = *p; | |
1685 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1686 | if (new->cookie < event->cookie) | |
1687 | p = &(*p)->rb_left; | |
1688 | else if (new->cookie > event->cookie) | |
1689 | p = &(*p)->rb_right; | |
1690 | else | |
1691 | BUG(); | |
1692 | } | |
1693 | ||
1694 | rb_link_node(&new->node, parent, p); | |
1695 | rb_insert_color(&new->node, &osdc->event_tree); | |
1696 | } | |
1697 | ||
1698 | static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, | |
1699 | u64 cookie) | |
1700 | { | |
1701 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1702 | struct rb_node *parent = NULL; | |
1703 | struct ceph_osd_event *event = NULL; | |
1704 | ||
1705 | while (*p) { | |
1706 | parent = *p; | |
1707 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1708 | if (cookie < event->cookie) | |
1709 | p = &(*p)->rb_left; | |
1710 | else if (cookie > event->cookie) | |
1711 | p = &(*p)->rb_right; | |
1712 | else | |
1713 | return event; | |
1714 | } | |
1715 | return NULL; | |
1716 | } | |
1717 | ||
1718 | static void __remove_event(struct ceph_osd_event *event) | |
1719 | { | |
1720 | struct ceph_osd_client *osdc = event->osdc; | |
1721 | ||
1722 | if (!RB_EMPTY_NODE(&event->node)) { | |
1723 | dout("__remove_event removed %p\n", event); | |
1724 | rb_erase(&event->node, &osdc->event_tree); | |
1725 | ceph_osdc_put_event(event); | |
1726 | } else { | |
1727 | dout("__remove_event didn't remove %p\n", event); | |
1728 | } | |
1729 | } | |
1730 | ||
1731 | int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
1732 | void (*event_cb)(u64, u64, u8, void *), | |
3c663bbd | 1733 | void *data, struct ceph_osd_event **pevent) |
a40c4f10 YS |
1734 | { |
1735 | struct ceph_osd_event *event; | |
1736 | ||
1737 | event = kmalloc(sizeof(*event), GFP_NOIO); | |
1738 | if (!event) | |
1739 | return -ENOMEM; | |
1740 | ||
1741 | dout("create_event %p\n", event); | |
1742 | event->cb = event_cb; | |
3c663bbd | 1743 | event->one_shot = 0; |
a40c4f10 YS |
1744 | event->data = data; |
1745 | event->osdc = osdc; | |
1746 | INIT_LIST_HEAD(&event->osd_node); | |
3ee5234d | 1747 | RB_CLEAR_NODE(&event->node); |
a40c4f10 YS |
1748 | kref_init(&event->kref); /* one ref for us */ |
1749 | kref_get(&event->kref); /* one ref for the caller */ | |
a40c4f10 YS |
1750 | |
1751 | spin_lock(&osdc->event_lock); | |
1752 | event->cookie = ++osdc->event_count; | |
1753 | __insert_event(osdc, event); | |
1754 | spin_unlock(&osdc->event_lock); | |
1755 | ||
1756 | *pevent = event; | |
1757 | return 0; | |
1758 | } | |
1759 | EXPORT_SYMBOL(ceph_osdc_create_event); | |
1760 | ||
1761 | void ceph_osdc_cancel_event(struct ceph_osd_event *event) | |
1762 | { | |
1763 | struct ceph_osd_client *osdc = event->osdc; | |
1764 | ||
1765 | dout("cancel_event %p\n", event); | |
1766 | spin_lock(&osdc->event_lock); | |
1767 | __remove_event(event); | |
1768 | spin_unlock(&osdc->event_lock); | |
1769 | ceph_osdc_put_event(event); /* caller's */ | |
1770 | } | |
1771 | EXPORT_SYMBOL(ceph_osdc_cancel_event); | |
1772 | ||
1773 | ||
1774 | static void do_event_work(struct work_struct *work) | |
1775 | { | |
1776 | struct ceph_osd_event_work *event_work = | |
1777 | container_of(work, struct ceph_osd_event_work, work); | |
1778 | struct ceph_osd_event *event = event_work->event; | |
1779 | u64 ver = event_work->ver; | |
1780 | u64 notify_id = event_work->notify_id; | |
1781 | u8 opcode = event_work->opcode; | |
1782 | ||
1783 | dout("do_event_work completing %p\n", event); | |
1784 | event->cb(ver, notify_id, opcode, event->data); | |
a40c4f10 YS |
1785 | dout("do_event_work completed %p\n", event); |
1786 | ceph_osdc_put_event(event); | |
1787 | kfree(event_work); | |
1788 | } | |
1789 | ||
1790 | ||
1791 | /* | |
1792 | * Process osd watch notifications | |
1793 | */ | |
3c663bbd AE |
1794 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
1795 | struct ceph_msg *msg) | |
a40c4f10 YS |
1796 | { |
1797 | void *p, *end; | |
1798 | u8 proto_ver; | |
1799 | u64 cookie, ver, notify_id; | |
1800 | u8 opcode; | |
1801 | struct ceph_osd_event *event; | |
1802 | struct ceph_osd_event_work *event_work; | |
1803 | ||
1804 | p = msg->front.iov_base; | |
1805 | end = p + msg->front.iov_len; | |
1806 | ||
1807 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
1808 | ceph_decode_8_safe(&p, end, opcode, bad); | |
1809 | ceph_decode_64_safe(&p, end, cookie, bad); | |
1810 | ceph_decode_64_safe(&p, end, ver, bad); | |
1811 | ceph_decode_64_safe(&p, end, notify_id, bad); | |
1812 | ||
1813 | spin_lock(&osdc->event_lock); | |
1814 | event = __find_event(osdc, cookie); | |
1815 | if (event) { | |
3c663bbd | 1816 | BUG_ON(event->one_shot); |
a40c4f10 | 1817 | get_event(event); |
a40c4f10 YS |
1818 | } |
1819 | spin_unlock(&osdc->event_lock); | |
1820 | dout("handle_watch_notify cookie %lld ver %lld event %p\n", | |
1821 | cookie, ver, event); | |
1822 | if (event) { | |
1823 | event_work = kmalloc(sizeof(*event_work), GFP_NOIO); | |
a40c4f10 YS |
1824 | if (!event_work) { |
1825 | dout("ERROR: could not allocate event_work\n"); | |
1826 | goto done_err; | |
1827 | } | |
6b0ae409 | 1828 | INIT_WORK(&event_work->work, do_event_work); |
a40c4f10 YS |
1829 | event_work->event = event; |
1830 | event_work->ver = ver; | |
1831 | event_work->notify_id = notify_id; | |
1832 | event_work->opcode = opcode; | |
1833 | if (!queue_work(osdc->notify_wq, &event_work->work)) { | |
1834 | dout("WARNING: failed to queue notify event work\n"); | |
1835 | goto done_err; | |
1836 | } | |
1837 | } | |
1838 | ||
1839 | return; | |
1840 | ||
1841 | done_err: | |
a40c4f10 YS |
1842 | ceph_osdc_put_event(event); |
1843 | return; | |
1844 | ||
1845 | bad: | |
1846 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
1847 | return; | |
1848 | } | |
1849 | ||
70636773 AE |
1850 | static void ceph_osdc_msg_data_set(struct ceph_msg *msg, |
1851 | struct ceph_osd_data *osd_data) | |
f24e9980 | 1852 | { |
23c08a9c AE |
1853 | u64 length = ceph_osd_data_length(osd_data); |
1854 | ||
0fff87ec | 1855 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { |
23c08a9c AE |
1856 | BUG_ON(length > (u64) SIZE_MAX); |
1857 | if (length) | |
70636773 | 1858 | ceph_msg_data_set_pages(msg, osd_data->pages, |
23c08a9c | 1859 | length, osd_data->alignment); |
9a5e6d09 | 1860 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { |
23c08a9c | 1861 | BUG_ON(!length); |
9a5e6d09 | 1862 | ceph_msg_data_set_pagelist(msg, osd_data->pagelist); |
68b4476b | 1863 | #ifdef CONFIG_BLOCK |
0fff87ec | 1864 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { |
23c08a9c | 1865 | ceph_msg_data_set_bio(msg, osd_data->bio, length); |
68b4476b | 1866 | #endif |
2ac2b7a6 | 1867 | } else { |
0fff87ec | 1868 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); |
2ac2b7a6 | 1869 | } |
70636773 AE |
1870 | } |
1871 | ||
e65550fd AE |
1872 | /* |
1873 | * build new request AND message | |
1874 | * | |
1875 | */ | |
1876 | void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, | |
1877 | struct ceph_snap_context *snapc, u64 snap_id, | |
1878 | struct timespec *mtime) | |
1879 | { | |
1880 | struct ceph_msg *msg = req->r_request; | |
1881 | void *p; | |
1882 | size_t msg_size; | |
1883 | int flags = req->r_flags; | |
1884 | u64 data_len; | |
1885 | unsigned int i; | |
1886 | ||
39b44cbe AE |
1887 | /* Set up response incoming data and request outgoing data fields */ |
1888 | ||
1889 | ceph_osdc_msg_data_set(req->r_reply, &req->r_data_in); | |
1890 | ceph_osdc_msg_data_set(req->r_request, &req->r_data_out); | |
1891 | ||
e65550fd AE |
1892 | req->r_snapid = snap_id; |
1893 | req->r_snapc = ceph_get_snap_context(snapc); | |
1894 | ||
1895 | /* encode request */ | |
1896 | msg->hdr.version = cpu_to_le16(4); | |
1897 | ||
1898 | p = msg->front.iov_base; | |
1899 | ceph_encode_32(&p, 1); /* client_inc is always 1 */ | |
1900 | req->r_request_osdmap_epoch = p; | |
1901 | p += 4; | |
1902 | req->r_request_flags = p; | |
1903 | p += 4; | |
1904 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) | |
1905 | ceph_encode_timespec(p, mtime); | |
1906 | p += sizeof(struct ceph_timespec); | |
1907 | req->r_request_reassert_version = p; | |
1908 | p += sizeof(struct ceph_eversion); /* will get filled in */ | |
1909 | ||
1910 | /* oloc */ | |
1911 | ceph_encode_8(&p, 4); | |
1912 | ceph_encode_8(&p, 4); | |
1913 | ceph_encode_32(&p, 8 + 4 + 4); | |
1914 | req->r_request_pool = p; | |
1915 | p += 8; | |
1916 | ceph_encode_32(&p, -1); /* preferred */ | |
1917 | ceph_encode_32(&p, 0); /* key len */ | |
1918 | ||
1919 | ceph_encode_8(&p, 1); | |
1920 | req->r_request_pgid = p; | |
1921 | p += 8 + 4; | |
1922 | ceph_encode_32(&p, -1); /* preferred */ | |
1923 | ||
1924 | /* oid */ | |
1925 | ceph_encode_32(&p, req->r_oid_len); | |
1926 | memcpy(p, req->r_oid, req->r_oid_len); | |
1927 | dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); | |
1928 | p += req->r_oid_len; | |
1929 | ||
1930 | /* ops--can imply data */ | |
1931 | ceph_encode_16(&p, (u16)req->r_num_ops); | |
1932 | data_len = 0; | |
1933 | for (i = 0; i < req->r_num_ops; i++) { | |
1934 | data_len += osd_req_encode_op(req, p, i); | |
1935 | p += sizeof(struct ceph_osd_op); | |
1936 | } | |
1937 | ||
1938 | /* snaps */ | |
1939 | ceph_encode_64(&p, req->r_snapid); | |
1940 | ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); | |
1941 | ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); | |
1942 | if (req->r_snapc) { | |
1943 | for (i = 0; i < snapc->num_snaps; i++) { | |
1944 | ceph_encode_64(&p, req->r_snapc->snaps[i]); | |
1945 | } | |
1946 | } | |
1947 | ||
1948 | req->r_request_attempts = p; | |
1949 | p += 4; | |
1950 | ||
1951 | /* data */ | |
1952 | if (flags & CEPH_OSD_FLAG_WRITE) { | |
1953 | u16 data_off; | |
1954 | ||
1955 | /* | |
1956 | * The header "data_off" is a hint to the receiver | |
1957 | * allowing it to align received data into its | |
1958 | * buffers such that there's no need to re-copy | |
1959 | * it before writing it to disk (direct I/O). | |
1960 | */ | |
1961 | data_off = (u16) (off & 0xffff); | |
1962 | req->r_request->hdr.data_off = cpu_to_le16(data_off); | |
1963 | } | |
1964 | req->r_request->hdr.data_len = cpu_to_le32(data_len); | |
1965 | ||
1966 | BUG_ON(p > msg->front.iov_base + msg->front.iov_len); | |
1967 | msg_size = p - msg->front.iov_base; | |
1968 | msg->front.iov_len = msg_size; | |
1969 | msg->hdr.front_len = cpu_to_le32(msg_size); | |
1970 | ||
1971 | dout("build_request msg_size was %d\n", (int)msg_size); | |
1972 | } | |
1973 | EXPORT_SYMBOL(ceph_osdc_build_request); | |
1974 | ||
70636773 AE |
1975 | /* |
1976 | * Register request, send initial attempt. | |
1977 | */ | |
1978 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
1979 | struct ceph_osd_request *req, | |
1980 | bool nofail) | |
1981 | { | |
1982 | int rc = 0; | |
1983 | ||
f24e9980 SW |
1984 | down_read(&osdc->map_sem); |
1985 | mutex_lock(&osdc->request_mutex); | |
dc4b870c | 1986 | __register_request(osdc, req); |
92451b49 AE |
1987 | WARN_ON(req->r_sent); |
1988 | rc = __map_request(osdc, req, 0); | |
1989 | if (rc < 0) { | |
1990 | if (nofail) { | |
1991 | dout("osdc_start_request failed map, " | |
1992 | " will retry %lld\n", req->r_tid); | |
1993 | rc = 0; | |
f24e9980 | 1994 | } |
92451b49 | 1995 | goto out_unlock; |
f24e9980 | 1996 | } |
92451b49 AE |
1997 | if (req->r_osd == NULL) { |
1998 | dout("send_request %p no up osds in pg\n", req); | |
1999 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
2000 | } else { | |
7e2766a1 | 2001 | __send_queued(osdc); |
92451b49 AE |
2002 | } |
2003 | rc = 0; | |
234af26f | 2004 | out_unlock: |
f24e9980 SW |
2005 | mutex_unlock(&osdc->request_mutex); |
2006 | up_read(&osdc->map_sem); | |
2007 | return rc; | |
2008 | } | |
3d14c5d2 | 2009 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 SW |
2010 | |
2011 | /* | |
2012 | * wait for a request to complete | |
2013 | */ | |
2014 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
2015 | struct ceph_osd_request *req) | |
2016 | { | |
2017 | int rc; | |
2018 | ||
2019 | rc = wait_for_completion_interruptible(&req->r_completion); | |
2020 | if (rc < 0) { | |
2021 | mutex_lock(&osdc->request_mutex); | |
2022 | __cancel_request(req); | |
529cfcc4 | 2023 | __unregister_request(osdc, req); |
f24e9980 | 2024 | mutex_unlock(&osdc->request_mutex); |
25845472 | 2025 | complete_request(req); |
529cfcc4 | 2026 | dout("wait_request tid %llu canceled/timed out\n", req->r_tid); |
f24e9980 SW |
2027 | return rc; |
2028 | } | |
2029 | ||
2030 | dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); | |
2031 | return req->r_result; | |
2032 | } | |
3d14c5d2 | 2033 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
2034 | |
2035 | /* | |
2036 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
2037 | */ | |
2038 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
2039 | { | |
2040 | struct ceph_osd_request *req; | |
2041 | u64 last_tid, next_tid = 0; | |
2042 | ||
2043 | mutex_lock(&osdc->request_mutex); | |
2044 | last_tid = osdc->last_tid; | |
2045 | while (1) { | |
2046 | req = __lookup_request_ge(osdc, next_tid); | |
2047 | if (!req) | |
2048 | break; | |
2049 | if (req->r_tid > last_tid) | |
2050 | break; | |
2051 | ||
2052 | next_tid = req->r_tid + 1; | |
2053 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) | |
2054 | continue; | |
2055 | ||
2056 | ceph_osdc_get_request(req); | |
2057 | mutex_unlock(&osdc->request_mutex); | |
2058 | dout("sync waiting on tid %llu (last is %llu)\n", | |
2059 | req->r_tid, last_tid); | |
2060 | wait_for_completion(&req->r_safe_completion); | |
2061 | mutex_lock(&osdc->request_mutex); | |
2062 | ceph_osdc_put_request(req); | |
2063 | } | |
2064 | mutex_unlock(&osdc->request_mutex); | |
2065 | dout("sync done (thru tid %llu)\n", last_tid); | |
2066 | } | |
3d14c5d2 | 2067 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 SW |
2068 | |
2069 | /* | |
2070 | * init, shutdown | |
2071 | */ | |
2072 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
2073 | { | |
2074 | int err; | |
2075 | ||
2076 | dout("init\n"); | |
2077 | osdc->client = client; | |
2078 | osdc->osdmap = NULL; | |
2079 | init_rwsem(&osdc->map_sem); | |
2080 | init_completion(&osdc->map_waiters); | |
2081 | osdc->last_requested_map = 0; | |
2082 | mutex_init(&osdc->request_mutex); | |
f24e9980 SW |
2083 | osdc->last_tid = 0; |
2084 | osdc->osds = RB_ROOT; | |
f5a2041b | 2085 | INIT_LIST_HEAD(&osdc->osd_lru); |
f24e9980 | 2086 | osdc->requests = RB_ROOT; |
422d2cb8 | 2087 | INIT_LIST_HEAD(&osdc->req_lru); |
6f6c7006 SW |
2088 | INIT_LIST_HEAD(&osdc->req_unsent); |
2089 | INIT_LIST_HEAD(&osdc->req_notarget); | |
a40c4f10 | 2090 | INIT_LIST_HEAD(&osdc->req_linger); |
f24e9980 SW |
2091 | osdc->num_requests = 0; |
2092 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); | |
f5a2041b | 2093 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10 YS |
2094 | spin_lock_init(&osdc->event_lock); |
2095 | osdc->event_tree = RB_ROOT; | |
2096 | osdc->event_count = 0; | |
f5a2041b YS |
2097 | |
2098 | schedule_delayed_work(&osdc->osds_timeout_work, | |
3d14c5d2 | 2099 | round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); |
f24e9980 | 2100 | |
5f44f142 | 2101 | err = -ENOMEM; |
f24e9980 SW |
2102 | osdc->req_mempool = mempool_create_kmalloc_pool(10, |
2103 | sizeof(struct ceph_osd_request)); | |
2104 | if (!osdc->req_mempool) | |
5f44f142 | 2105 | goto out; |
f24e9980 | 2106 | |
d50b409f SW |
2107 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
2108 | OSD_OP_FRONT_LEN, 10, true, | |
4f48280e | 2109 | "osd_op"); |
f24e9980 | 2110 | if (err < 0) |
5f44f142 | 2111 | goto out_mempool; |
d50b409f | 2112 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
4f48280e SW |
2113 | OSD_OPREPLY_FRONT_LEN, 10, true, |
2114 | "osd_op_reply"); | |
c16e7869 SW |
2115 | if (err < 0) |
2116 | goto out_msgpool; | |
a40c4f10 YS |
2117 | |
2118 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); | |
2119 | if (IS_ERR(osdc->notify_wq)) { | |
2120 | err = PTR_ERR(osdc->notify_wq); | |
2121 | osdc->notify_wq = NULL; | |
2122 | goto out_msgpool; | |
2123 | } | |
f24e9980 | 2124 | return 0; |
5f44f142 | 2125 | |
c16e7869 SW |
2126 | out_msgpool: |
2127 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
2128 | out_mempool: |
2129 | mempool_destroy(osdc->req_mempool); | |
2130 | out: | |
2131 | return err; | |
f24e9980 SW |
2132 | } |
2133 | ||
2134 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
2135 | { | |
a40c4f10 YS |
2136 | flush_workqueue(osdc->notify_wq); |
2137 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 2138 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 2139 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
f24e9980 SW |
2140 | if (osdc->osdmap) { |
2141 | ceph_osdmap_destroy(osdc->osdmap); | |
2142 | osdc->osdmap = NULL; | |
2143 | } | |
aca420bc | 2144 | remove_all_osds(osdc); |
f24e9980 SW |
2145 | mempool_destroy(osdc->req_mempool); |
2146 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 2147 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
2148 | } |
2149 | ||
2150 | /* | |
2151 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
2152 | * *plen. Return number of bytes read, or error. | |
2153 | */ | |
2154 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
2155 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
2156 | u64 off, u64 *plen, | |
2157 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 2158 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
2159 | { |
2160 | struct ceph_osd_request *req; | |
2161 | int rc = 0; | |
2162 | ||
2163 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
2164 | vino.snap, off, *plen); | |
79528734 | 2165 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1, |
f24e9980 | 2166 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, |
acead002 | 2167 | NULL, truncate_seq, truncate_size, |
153e5167 | 2168 | false); |
6816282d SW |
2169 | if (IS_ERR(req)) |
2170 | return PTR_ERR(req); | |
f24e9980 SW |
2171 | |
2172 | /* it may be a short read due to an object boundary */ | |
0fff87ec | 2173 | |
43bfe5de AE |
2174 | ceph_osd_data_pages_init(&req->r_data_in, pages, *plen, page_align, |
2175 | false, false); | |
f24e9980 | 2176 | |
e0c59487 | 2177 | dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", |
43bfe5de | 2178 | off, *plen, *plen, page_align); |
f24e9980 | 2179 | |
79528734 | 2180 | ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); |
02ee07d3 | 2181 | |
f24e9980 SW |
2182 | rc = ceph_osdc_start_request(osdc, req, false); |
2183 | if (!rc) | |
2184 | rc = ceph_osdc_wait_request(osdc, req); | |
2185 | ||
2186 | ceph_osdc_put_request(req); | |
2187 | dout("readpages result %d\n", rc); | |
2188 | return rc; | |
2189 | } | |
3d14c5d2 | 2190 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
2191 | |
2192 | /* | |
2193 | * do a synchronous write on N pages | |
2194 | */ | |
2195 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
2196 | struct ceph_file_layout *layout, | |
2197 | struct ceph_snap_context *snapc, | |
2198 | u64 off, u64 len, | |
2199 | u32 truncate_seq, u64 truncate_size, | |
2200 | struct timespec *mtime, | |
24808826 | 2201 | struct page **pages, int num_pages) |
f24e9980 SW |
2202 | { |
2203 | struct ceph_osd_request *req; | |
2204 | int rc = 0; | |
b7495fc2 | 2205 | int page_align = off & ~PAGE_MASK; |
f24e9980 | 2206 | |
acead002 | 2207 | BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ |
79528734 | 2208 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1, |
f24e9980 | 2209 | CEPH_OSD_OP_WRITE, |
24808826 | 2210 | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, |
acead002 | 2211 | snapc, truncate_seq, truncate_size, |
153e5167 | 2212 | true); |
6816282d SW |
2213 | if (IS_ERR(req)) |
2214 | return PTR_ERR(req); | |
f24e9980 SW |
2215 | |
2216 | /* it may be a short write due to an object boundary */ | |
43bfe5de AE |
2217 | ceph_osd_data_pages_init(&req->r_data_out, pages, len, page_align, |
2218 | false, false); | |
2219 | dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); | |
f24e9980 | 2220 | |
79528734 | 2221 | ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); |
02ee07d3 | 2222 | |
87f979d3 | 2223 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
2224 | if (!rc) |
2225 | rc = ceph_osdc_wait_request(osdc, req); | |
2226 | ||
2227 | ceph_osdc_put_request(req); | |
2228 | if (rc == 0) | |
2229 | rc = len; | |
2230 | dout("writepages result %d\n", rc); | |
2231 | return rc; | |
2232 | } | |
3d14c5d2 | 2233 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 SW |
2234 | |
2235 | /* | |
2236 | * handle incoming message | |
2237 | */ | |
2238 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
2239 | { | |
2240 | struct ceph_osd *osd = con->private; | |
32c895e7 | 2241 | struct ceph_osd_client *osdc; |
f24e9980 SW |
2242 | int type = le16_to_cpu(msg->hdr.type); |
2243 | ||
2244 | if (!osd) | |
4a32f93d | 2245 | goto out; |
32c895e7 | 2246 | osdc = osd->o_osdc; |
f24e9980 SW |
2247 | |
2248 | switch (type) { | |
2249 | case CEPH_MSG_OSD_MAP: | |
2250 | ceph_osdc_handle_map(osdc, msg); | |
2251 | break; | |
2252 | case CEPH_MSG_OSD_OPREPLY: | |
350b1c32 | 2253 | handle_reply(osdc, msg, con); |
f24e9980 | 2254 | break; |
a40c4f10 YS |
2255 | case CEPH_MSG_WATCH_NOTIFY: |
2256 | handle_watch_notify(osdc, msg); | |
2257 | break; | |
f24e9980 SW |
2258 | |
2259 | default: | |
2260 | pr_err("received unknown message type %d %s\n", type, | |
2261 | ceph_msg_type_name(type)); | |
2262 | } | |
4a32f93d | 2263 | out: |
f24e9980 SW |
2264 | ceph_msg_put(msg); |
2265 | } | |
2266 | ||
5b3a4db3 | 2267 | /* |
21b667f6 SW |
2268 | * lookup and return message for incoming reply. set up reply message |
2269 | * pages. | |
5b3a4db3 SW |
2270 | */ |
2271 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
2272 | struct ceph_msg_header *hdr, |
2273 | int *skip) | |
f24e9980 SW |
2274 | { |
2275 | struct ceph_osd *osd = con->private; | |
2276 | struct ceph_osd_client *osdc = osd->o_osdc; | |
2450418c | 2277 | struct ceph_msg *m; |
0547a9b3 | 2278 | struct ceph_osd_request *req; |
5b3a4db3 SW |
2279 | int front = le32_to_cpu(hdr->front_len); |
2280 | int data_len = le32_to_cpu(hdr->data_len); | |
0547a9b3 | 2281 | u64 tid; |
f24e9980 | 2282 | |
0547a9b3 YS |
2283 | tid = le64_to_cpu(hdr->tid); |
2284 | mutex_lock(&osdc->request_mutex); | |
2285 | req = __lookup_request(osdc, tid); | |
2286 | if (!req) { | |
2287 | *skip = 1; | |
2288 | m = NULL; | |
756a16a5 SW |
2289 | dout("get_reply unknown tid %llu from osd%d\n", tid, |
2290 | osd->o_osd); | |
0547a9b3 YS |
2291 | goto out; |
2292 | } | |
c16e7869 | 2293 | |
ace6d3a9 | 2294 | if (req->r_reply->con) |
8921d114 | 2295 | dout("%s revoking msg %p from old con %p\n", __func__, |
ace6d3a9 AE |
2296 | req->r_reply, req->r_reply->con); |
2297 | ceph_msg_revoke_incoming(req->r_reply); | |
0547a9b3 | 2298 | |
c16e7869 SW |
2299 | if (front > req->r_reply->front.iov_len) { |
2300 | pr_warning("get_reply front %d > preallocated %d\n", | |
2301 | front, (int)req->r_reply->front.iov_len); | |
b61c2763 | 2302 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); |
a79832f2 | 2303 | if (!m) |
c16e7869 SW |
2304 | goto out; |
2305 | ceph_msg_put(req->r_reply); | |
2306 | req->r_reply = m; | |
2307 | } | |
2308 | m = ceph_msg_get(req->r_reply); | |
2309 | ||
0547a9b3 | 2310 | if (data_len > 0) { |
0fff87ec AE |
2311 | struct ceph_osd_data *osd_data = &req->r_data_in; |
2312 | ||
2313 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { | |
0fff87ec | 2314 | if (osd_data->pages && |
e0c59487 | 2315 | unlikely(osd_data->length < data_len)) { |
2ac2b7a6 | 2316 | |
e0c59487 AE |
2317 | pr_warning("tid %lld reply has %d bytes " |
2318 | "we had only %llu bytes ready\n", | |
2319 | tid, data_len, osd_data->length); | |
2ac2b7a6 AE |
2320 | *skip = 1; |
2321 | ceph_msg_put(m); | |
2322 | m = NULL; | |
2323 | goto out; | |
2324 | } | |
2ac2b7a6 | 2325 | } |
0547a9b3 | 2326 | } |
5b3a4db3 | 2327 | *skip = 0; |
c16e7869 | 2328 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 YS |
2329 | |
2330 | out: | |
2331 | mutex_unlock(&osdc->request_mutex); | |
2450418c | 2332 | return m; |
5b3a4db3 SW |
2333 | |
2334 | } | |
2335 | ||
2336 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, | |
2337 | struct ceph_msg_header *hdr, | |
2338 | int *skip) | |
2339 | { | |
2340 | struct ceph_osd *osd = con->private; | |
2341 | int type = le16_to_cpu(hdr->type); | |
2342 | int front = le32_to_cpu(hdr->front_len); | |
2343 | ||
1c20f2d2 | 2344 | *skip = 0; |
5b3a4db3 SW |
2345 | switch (type) { |
2346 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 2347 | case CEPH_MSG_WATCH_NOTIFY: |
b61c2763 | 2348 | return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3 SW |
2349 | case CEPH_MSG_OSD_OPREPLY: |
2350 | return get_reply(con, hdr, skip); | |
2351 | default: | |
2352 | pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, | |
2353 | osd->o_osd); | |
2354 | *skip = 1; | |
2355 | return NULL; | |
2356 | } | |
f24e9980 SW |
2357 | } |
2358 | ||
2359 | /* | |
2360 | * Wrappers to refcount containing ceph_osd struct | |
2361 | */ | |
2362 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
2363 | { | |
2364 | struct ceph_osd *osd = con->private; | |
2365 | if (get_osd(osd)) | |
2366 | return con; | |
2367 | return NULL; | |
2368 | } | |
2369 | ||
2370 | static void put_osd_con(struct ceph_connection *con) | |
2371 | { | |
2372 | struct ceph_osd *osd = con->private; | |
2373 | put_osd(osd); | |
2374 | } | |
2375 | ||
4e7a5dcd SW |
2376 | /* |
2377 | * authentication | |
2378 | */ | |
a3530df3 AE |
2379 | /* |
2380 | * Note: returned pointer is the address of a structure that's | |
2381 | * managed separately. Caller must *not* attempt to free it. | |
2382 | */ | |
2383 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 2384 | int *proto, int force_new) |
4e7a5dcd SW |
2385 | { |
2386 | struct ceph_osd *o = con->private; | |
2387 | struct ceph_osd_client *osdc = o->o_osdc; | |
2388 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 2389 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 2390 | |
74f1869f | 2391 | if (force_new && auth->authorizer) { |
27859f97 | 2392 | ceph_auth_destroy_authorizer(ac, auth->authorizer); |
74f1869f AE |
2393 | auth->authorizer = NULL; |
2394 | } | |
27859f97 SW |
2395 | if (!auth->authorizer) { |
2396 | int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
2397 | auth); | |
4e7a5dcd | 2398 | if (ret) |
a3530df3 | 2399 | return ERR_PTR(ret); |
27859f97 SW |
2400 | } else { |
2401 | int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
0bed9b5c SW |
2402 | auth); |
2403 | if (ret) | |
2404 | return ERR_PTR(ret); | |
4e7a5dcd | 2405 | } |
4e7a5dcd | 2406 | *proto = ac->protocol; |
74f1869f | 2407 | |
a3530df3 | 2408 | return auth; |
4e7a5dcd SW |
2409 | } |
2410 | ||
2411 | ||
2412 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
2413 | { | |
2414 | struct ceph_osd *o = con->private; | |
2415 | struct ceph_osd_client *osdc = o->o_osdc; | |
2416 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2417 | ||
27859f97 | 2418 | return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
2419 | } |
2420 | ||
9bd2e6f8 SW |
2421 | static int invalidate_authorizer(struct ceph_connection *con) |
2422 | { | |
2423 | struct ceph_osd *o = con->private; | |
2424 | struct ceph_osd_client *osdc = o->o_osdc; | |
2425 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2426 | ||
27859f97 | 2427 | ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
9bd2e6f8 SW |
2428 | return ceph_monc_validate_auth(&osdc->client->monc); |
2429 | } | |
4e7a5dcd | 2430 | |
9e32789f | 2431 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
2432 | .get = get_osd_con, |
2433 | .put = put_osd_con, | |
2434 | .dispatch = dispatch, | |
4e7a5dcd SW |
2435 | .get_authorizer = get_authorizer, |
2436 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 2437 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 2438 | .alloc_msg = alloc_msg, |
81b024e7 | 2439 | .fault = osd_reset, |
f24e9980 | 2440 | }; |