Commit | Line | Data |
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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); |
33803f33 AE |
402 | size_t payload_len = 0; |
403 | size_t size; | |
404 | ||
405 | BUG_ON(opcode != CEPH_OSD_OP_CALL); | |
406 | ||
33803f33 AE |
407 | op->cls.class_name = class; |
408 | size = strlen(class); | |
409 | BUG_ON(size > (size_t) U8_MAX); | |
410 | op->cls.class_len = size; | |
411 | payload_len += size; | |
412 | ||
413 | op->cls.method_name = method; | |
414 | size = strlen(method); | |
415 | BUG_ON(size > (size_t) U8_MAX); | |
416 | op->cls.method_len = size; | |
417 | payload_len += size; | |
418 | ||
54d50649 | 419 | op->cls.request_data = request_data; |
33803f33 | 420 | BUG_ON(request_data_size > (size_t) U32_MAX); |
54d50649 | 421 | op->cls.request_data_len = (u32) request_data_size; |
33803f33 AE |
422 | payload_len += request_data_size; |
423 | ||
424 | op->cls.argc = 0; /* currently unused */ | |
425 | ||
426 | op->payload_len = payload_len; | |
427 | } | |
428 | EXPORT_SYMBOL(osd_req_op_cls_init); | |
c99d2d4a AE |
429 | void osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, |
430 | unsigned int which, | |
8c042b0d AE |
431 | struct ceph_osd_data *response_data) |
432 | { | |
c99d2d4a AE |
433 | BUG_ON(which >= osd_req->r_num_ops); |
434 | osd_req->r_ops[which].cls.response_data = response_data; | |
8c042b0d AE |
435 | } |
436 | EXPORT_SYMBOL(osd_req_op_cls_response_data); | |
437 | ||
c99d2d4a AE |
438 | void osd_req_op_watch_init(struct ceph_osd_request *osd_req, |
439 | unsigned int which, u16 opcode, | |
33803f33 AE |
440 | u64 cookie, u64 version, int flag) |
441 | { | |
c99d2d4a | 442 | struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, opcode); |
33803f33 | 443 | |
c99d2d4a | 444 | BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); |
33803f33 AE |
445 | |
446 | op->watch.cookie = cookie; | |
447 | /* op->watch.ver = version; */ /* XXX 3847 */ | |
448 | op->watch.ver = cpu_to_le64(version); | |
449 | if (opcode == CEPH_OSD_OP_WATCH && flag) | |
c99d2d4a | 450 | op->watch.flag = (u8)1; |
33803f33 AE |
451 | } |
452 | EXPORT_SYMBOL(osd_req_op_watch_init); | |
453 | ||
a8dd0a37 | 454 | static u64 osd_req_encode_op(struct ceph_osd_request *req, |
79528734 | 455 | struct ceph_osd_op *dst, unsigned int which) |
a8dd0a37 | 456 | { |
79528734 | 457 | struct ceph_osd_req_op *src; |
54d50649 | 458 | u64 request_data_len = 0; |
a8dd0a37 AE |
459 | struct ceph_pagelist *pagelist; |
460 | ||
79528734 AE |
461 | BUG_ON(which >= req->r_num_ops); |
462 | src = &req->r_ops[which]; | |
a8dd0a37 AE |
463 | if (WARN_ON(!osd_req_opcode_valid(src->op))) { |
464 | pr_err("unrecognized osd opcode %d\n", src->op); | |
465 | ||
466 | return 0; | |
467 | } | |
468 | ||
469 | switch (src->op) { | |
470 | case CEPH_OSD_OP_STAT: | |
471 | break; | |
472 | case CEPH_OSD_OP_READ: | |
473 | case CEPH_OSD_OP_WRITE: | |
474 | if (src->op == CEPH_OSD_OP_WRITE) | |
54d50649 | 475 | request_data_len = src->extent.length; |
a8dd0a37 AE |
476 | dst->extent.offset = cpu_to_le64(src->extent.offset); |
477 | dst->extent.length = cpu_to_le64(src->extent.length); | |
478 | dst->extent.truncate_size = | |
479 | cpu_to_le64(src->extent.truncate_size); | |
480 | dst->extent.truncate_seq = | |
481 | cpu_to_le32(src->extent.truncate_seq); | |
8c042b0d AE |
482 | if (src->op == CEPH_OSD_OP_WRITE) |
483 | WARN_ON(src->extent.osd_data != &req->r_data_out); | |
484 | else | |
485 | WARN_ON(src->extent.osd_data != &req->r_data_in); | |
a8dd0a37 AE |
486 | break; |
487 | case CEPH_OSD_OP_CALL: | |
488 | pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); | |
489 | BUG_ON(!pagelist); | |
490 | ceph_pagelist_init(pagelist); | |
491 | ||
492 | dst->cls.class_len = src->cls.class_len; | |
493 | dst->cls.method_len = src->cls.method_len; | |
54d50649 | 494 | dst->cls.indata_len = cpu_to_le32(src->cls.request_data_len); |
a8dd0a37 AE |
495 | ceph_pagelist_append(pagelist, src->cls.class_name, |
496 | src->cls.class_len); | |
497 | ceph_pagelist_append(pagelist, src->cls.method_name, | |
498 | src->cls.method_len); | |
54d50649 AE |
499 | ceph_pagelist_append(pagelist, src->cls.request_data, |
500 | src->cls.request_data_len); | |
43bfe5de | 501 | ceph_osd_data_pagelist_init(&req->r_data_out, pagelist); |
8c042b0d AE |
502 | |
503 | WARN_ON(src->cls.response_data != &req->r_data_in); | |
54d50649 | 504 | request_data_len = pagelist->length; |
a8dd0a37 AE |
505 | break; |
506 | case CEPH_OSD_OP_STARTSYNC: | |
507 | break; | |
508 | case CEPH_OSD_OP_NOTIFY_ACK: | |
509 | case CEPH_OSD_OP_WATCH: | |
510 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
511 | dst->watch.ver = cpu_to_le64(src->watch.ver); | |
512 | dst->watch.flag = src->watch.flag; | |
513 | break; | |
514 | default: | |
4c46459c | 515 | pr_err("unsupported osd opcode %s\n", |
8f63ca2d | 516 | ceph_osd_op_name(src->op)); |
4c46459c | 517 | WARN_ON(1); |
a8dd0a37 AE |
518 | |
519 | return 0; | |
68b4476b | 520 | } |
a8dd0a37 | 521 | dst->op = cpu_to_le16(src->op); |
68b4476b | 522 | dst->payload_len = cpu_to_le32(src->payload_len); |
175face2 | 523 | |
54d50649 | 524 | return request_data_len; |
68b4476b YS |
525 | } |
526 | ||
3499e8a5 YS |
527 | /* |
528 | * build new request AND message | |
529 | * | |
530 | */ | |
79528734 AE |
531 | void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, |
532 | struct ceph_snap_context *snapc, u64 snap_id, | |
533 | struct timespec *mtime) | |
3499e8a5 YS |
534 | { |
535 | struct ceph_msg *msg = req->r_request; | |
3499e8a5 | 536 | void *p; |
1b83bef2 | 537 | size_t msg_size; |
3499e8a5 | 538 | int flags = req->r_flags; |
f44246e3 | 539 | u64 data_len; |
79528734 | 540 | unsigned int i; |
3499e8a5 | 541 | |
1b83bef2 | 542 | req->r_snapid = snap_id; |
f24e9980 SW |
543 | req->r_snapc = ceph_get_snap_context(snapc); |
544 | ||
1b83bef2 SW |
545 | /* encode request */ |
546 | msg->hdr.version = cpu_to_le16(4); | |
547 | ||
548 | p = msg->front.iov_base; | |
549 | ceph_encode_32(&p, 1); /* client_inc is always 1 */ | |
550 | req->r_request_osdmap_epoch = p; | |
551 | p += 4; | |
552 | req->r_request_flags = p; | |
553 | p += 4; | |
554 | if (req->r_flags & CEPH_OSD_FLAG_WRITE) | |
555 | ceph_encode_timespec(p, mtime); | |
556 | p += sizeof(struct ceph_timespec); | |
557 | req->r_request_reassert_version = p; | |
558 | p += sizeof(struct ceph_eversion); /* will get filled in */ | |
559 | ||
560 | /* oloc */ | |
561 | ceph_encode_8(&p, 4); | |
562 | ceph_encode_8(&p, 4); | |
563 | ceph_encode_32(&p, 8 + 4 + 4); | |
564 | req->r_request_pool = p; | |
565 | p += 8; | |
566 | ceph_encode_32(&p, -1); /* preferred */ | |
567 | ceph_encode_32(&p, 0); /* key len */ | |
568 | ||
569 | ceph_encode_8(&p, 1); | |
570 | req->r_request_pgid = p; | |
571 | p += 8 + 4; | |
572 | ceph_encode_32(&p, -1); /* preferred */ | |
573 | ||
574 | /* oid */ | |
575 | ceph_encode_32(&p, req->r_oid_len); | |
af77f26c | 576 | memcpy(p, req->r_oid, req->r_oid_len); |
1b83bef2 | 577 | dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); |
af77f26c | 578 | p += req->r_oid_len; |
f24e9980 | 579 | |
175face2 | 580 | /* ops--can imply data */ |
79528734 | 581 | ceph_encode_16(&p, (u16)req->r_num_ops); |
175face2 | 582 | data_len = 0; |
79528734 AE |
583 | for (i = 0; i < req->r_num_ops; i++) { |
584 | data_len += osd_req_encode_op(req, p, i); | |
1b83bef2 SW |
585 | p += sizeof(struct ceph_osd_op); |
586 | } | |
68b4476b | 587 | |
1b83bef2 SW |
588 | /* snaps */ |
589 | ceph_encode_64(&p, req->r_snapid); | |
590 | ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); | |
591 | ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); | |
592 | if (req->r_snapc) { | |
f24e9980 | 593 | for (i = 0; i < snapc->num_snaps; i++) { |
1b83bef2 | 594 | ceph_encode_64(&p, req->r_snapc->snaps[i]); |
f24e9980 SW |
595 | } |
596 | } | |
597 | ||
1b83bef2 SW |
598 | req->r_request_attempts = p; |
599 | p += 4; | |
600 | ||
175face2 | 601 | /* data */ |
0baa1bd9 AE |
602 | if (flags & CEPH_OSD_FLAG_WRITE) { |
603 | u16 data_off; | |
604 | ||
605 | /* | |
606 | * The header "data_off" is a hint to the receiver | |
607 | * allowing it to align received data into its | |
608 | * buffers such that there's no need to re-copy | |
609 | * it before writing it to disk (direct I/O). | |
610 | */ | |
611 | data_off = (u16) (off & 0xffff); | |
612 | req->r_request->hdr.data_off = cpu_to_le16(data_off); | |
613 | } | |
f44246e3 | 614 | req->r_request->hdr.data_len = cpu_to_le32(data_len); |
c5c6b19d | 615 | |
f24e9980 | 616 | BUG_ON(p > msg->front.iov_base + msg->front.iov_len); |
6f863e71 SW |
617 | msg_size = p - msg->front.iov_base; |
618 | msg->front.iov_len = msg_size; | |
619 | msg->hdr.front_len = cpu_to_le32(msg_size); | |
1b83bef2 | 620 | |
acead002 | 621 | dout("build_request msg_size was %d\n", (int)msg_size); |
3499e8a5 | 622 | } |
3d14c5d2 | 623 | EXPORT_SYMBOL(ceph_osdc_build_request); |
3499e8a5 YS |
624 | |
625 | /* | |
626 | * build new request AND message, calculate layout, and adjust file | |
627 | * extent as needed. | |
628 | * | |
629 | * if the file was recently truncated, we include information about its | |
630 | * old and new size so that the object can be updated appropriately. (we | |
631 | * avoid synchronously deleting truncated objects because it's slow.) | |
632 | * | |
633 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
634 | * data quickly. | |
635 | */ | |
636 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
637 | struct ceph_file_layout *layout, | |
638 | struct ceph_vino vino, | |
acead002 | 639 | u64 off, u64 *plen, int num_ops, |
3499e8a5 YS |
640 | int opcode, int flags, |
641 | struct ceph_snap_context *snapc, | |
3499e8a5 YS |
642 | u32 truncate_seq, |
643 | u64 truncate_size, | |
153e5167 | 644 | bool use_mempool) |
3499e8a5 | 645 | { |
68b4476b | 646 | struct ceph_osd_request *req; |
8c042b0d | 647 | struct ceph_osd_data *osd_data; |
75d1c941 AE |
648 | u64 objnum = 0; |
649 | u64 objoff = 0; | |
650 | u64 objlen = 0; | |
d18d1e28 AE |
651 | u32 object_size; |
652 | u64 object_base; | |
6816282d | 653 | int r; |
68b4476b | 654 | |
d18d1e28 | 655 | BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); |
68b4476b | 656 | |
acead002 | 657 | req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, |
ae7ca4a3 | 658 | GFP_NOFS); |
4ad12621 | 659 | if (!req) |
6816282d | 660 | return ERR_PTR(-ENOMEM); |
8c042b0d AE |
661 | osd_data = opcode == CEPH_OSD_OP_WRITE ? &req->r_data_out |
662 | : &req->r_data_in; | |
79528734 | 663 | |
d178a9e7 | 664 | req->r_flags = flags; |
3499e8a5 YS |
665 | |
666 | /* calculate max write size */ | |
a19dadfb | 667 | r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); |
3ff5f385 AE |
668 | if (r < 0) { |
669 | ceph_osdc_put_request(req); | |
6816282d | 670 | return ERR_PTR(r); |
3ff5f385 | 671 | } |
a19dadfb | 672 | |
d18d1e28 AE |
673 | object_size = le32_to_cpu(layout->fl_object_size); |
674 | object_base = off - objoff; | |
675 | if (truncate_size <= object_base) { | |
676 | truncate_size = 0; | |
677 | } else { | |
678 | truncate_size -= object_base; | |
679 | if (truncate_size > object_size) | |
680 | truncate_size = object_size; | |
a19dadfb | 681 | } |
d18d1e28 | 682 | |
c99d2d4a | 683 | osd_req_op_extent_init(req, 0, opcode, objoff, objlen, |
b0270324 | 684 | truncate_size, truncate_seq); |
c99d2d4a | 685 | osd_req_op_extent_osd_data(req, 0, osd_data); |
8c042b0d | 686 | |
acead002 AE |
687 | /* |
688 | * A second op in the ops array means the caller wants to | |
689 | * also issue a include a 'startsync' command so that the | |
690 | * osd will flush data quickly. | |
691 | */ | |
692 | if (num_ops > 1) | |
c99d2d4a | 693 | osd_req_op_init(req, 1, CEPH_OSD_OP_STARTSYNC); |
d18d1e28 | 694 | |
3499e8a5 YS |
695 | req->r_file_layout = *layout; /* keep a copy */ |
696 | ||
75d1c941 AE |
697 | snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", |
698 | vino.ino, objnum); | |
dbe0fc41 AE |
699 | req->r_oid_len = strlen(req->r_oid); |
700 | ||
f24e9980 SW |
701 | return req; |
702 | } | |
3d14c5d2 | 703 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
704 | |
705 | /* | |
706 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
707 | */ | |
708 | static void __insert_request(struct ceph_osd_client *osdc, | |
709 | struct ceph_osd_request *new) | |
710 | { | |
711 | struct rb_node **p = &osdc->requests.rb_node; | |
712 | struct rb_node *parent = NULL; | |
713 | struct ceph_osd_request *req = NULL; | |
714 | ||
715 | while (*p) { | |
716 | parent = *p; | |
717 | req = rb_entry(parent, struct ceph_osd_request, r_node); | |
718 | if (new->r_tid < req->r_tid) | |
719 | p = &(*p)->rb_left; | |
720 | else if (new->r_tid > req->r_tid) | |
721 | p = &(*p)->rb_right; | |
722 | else | |
723 | BUG(); | |
724 | } | |
725 | ||
726 | rb_link_node(&new->r_node, parent, p); | |
727 | rb_insert_color(&new->r_node, &osdc->requests); | |
728 | } | |
729 | ||
730 | static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, | |
731 | u64 tid) | |
732 | { | |
733 | struct ceph_osd_request *req; | |
734 | struct rb_node *n = osdc->requests.rb_node; | |
735 | ||
736 | while (n) { | |
737 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
738 | if (tid < req->r_tid) | |
739 | n = n->rb_left; | |
740 | else if (tid > req->r_tid) | |
741 | n = n->rb_right; | |
742 | else | |
743 | return req; | |
744 | } | |
745 | return NULL; | |
746 | } | |
747 | ||
748 | static struct ceph_osd_request * | |
749 | __lookup_request_ge(struct ceph_osd_client *osdc, | |
750 | u64 tid) | |
751 | { | |
752 | struct ceph_osd_request *req; | |
753 | struct rb_node *n = osdc->requests.rb_node; | |
754 | ||
755 | while (n) { | |
756 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
757 | if (tid < req->r_tid) { | |
758 | if (!n->rb_left) | |
759 | return req; | |
760 | n = n->rb_left; | |
761 | } else if (tid > req->r_tid) { | |
762 | n = n->rb_right; | |
763 | } else { | |
764 | return req; | |
765 | } | |
766 | } | |
767 | return NULL; | |
768 | } | |
769 | ||
6f6c7006 SW |
770 | /* |
771 | * Resubmit requests pending on the given osd. | |
772 | */ | |
773 | static void __kick_osd_requests(struct ceph_osd_client *osdc, | |
774 | struct ceph_osd *osd) | |
775 | { | |
a40c4f10 | 776 | struct ceph_osd_request *req, *nreq; |
e02493c0 | 777 | LIST_HEAD(resend); |
6f6c7006 SW |
778 | int err; |
779 | ||
780 | dout("__kick_osd_requests osd%d\n", osd->o_osd); | |
781 | err = __reset_osd(osdc, osd); | |
685a7555 | 782 | if (err) |
6f6c7006 | 783 | return; |
e02493c0 AE |
784 | /* |
785 | * Build up a list of requests to resend by traversing the | |
786 | * osd's list of requests. Requests for a given object are | |
787 | * sent in tid order, and that is also the order they're | |
788 | * kept on this list. Therefore all requests that are in | |
789 | * flight will be found first, followed by all requests that | |
790 | * have not yet been sent. And to resend requests while | |
791 | * preserving this order we will want to put any sent | |
792 | * requests back on the front of the osd client's unsent | |
793 | * list. | |
794 | * | |
795 | * So we build a separate ordered list of already-sent | |
796 | * requests for the affected osd and splice it onto the | |
797 | * front of the osd client's unsent list. Once we've seen a | |
798 | * request that has not yet been sent we're done. Those | |
799 | * requests are already sitting right where they belong. | |
800 | */ | |
6f6c7006 | 801 | list_for_each_entry(req, &osd->o_requests, r_osd_item) { |
e02493c0 AE |
802 | if (!req->r_sent) |
803 | break; | |
804 | list_move_tail(&req->r_req_lru_item, &resend); | |
805 | dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, | |
6f6c7006 | 806 | osd->o_osd); |
a40c4f10 YS |
807 | if (!req->r_linger) |
808 | req->r_flags |= CEPH_OSD_FLAG_RETRY; | |
809 | } | |
e02493c0 | 810 | list_splice(&resend, &osdc->req_unsent); |
a40c4f10 | 811 | |
e02493c0 AE |
812 | /* |
813 | * Linger requests are re-registered before sending, which | |
814 | * sets up a new tid for each. We add them to the unsent | |
815 | * list at the end to keep things in tid order. | |
816 | */ | |
a40c4f10 YS |
817 | list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, |
818 | r_linger_osd) { | |
77f38e0e SW |
819 | /* |
820 | * reregister request prior to unregistering linger so | |
821 | * that r_osd is preserved. | |
822 | */ | |
823 | BUG_ON(!list_empty(&req->r_req_lru_item)); | |
a40c4f10 | 824 | __register_request(osdc, req); |
e02493c0 | 825 | list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); |
ad885927 | 826 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); |
77f38e0e | 827 | __unregister_linger_request(osdc, req); |
a40c4f10 YS |
828 | dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, |
829 | osd->o_osd); | |
6f6c7006 SW |
830 | } |
831 | } | |
832 | ||
f24e9980 | 833 | /* |
81b024e7 | 834 | * If the osd connection drops, we need to resubmit all requests. |
f24e9980 SW |
835 | */ |
836 | static void osd_reset(struct ceph_connection *con) | |
837 | { | |
838 | struct ceph_osd *osd = con->private; | |
839 | struct ceph_osd_client *osdc; | |
840 | ||
841 | if (!osd) | |
842 | return; | |
843 | dout("osd_reset osd%d\n", osd->o_osd); | |
844 | osdc = osd->o_osdc; | |
f24e9980 | 845 | down_read(&osdc->map_sem); |
83aff95e SW |
846 | mutex_lock(&osdc->request_mutex); |
847 | __kick_osd_requests(osdc, osd); | |
f9d25199 | 848 | __send_queued(osdc); |
83aff95e | 849 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
850 | up_read(&osdc->map_sem); |
851 | } | |
852 | ||
853 | /* | |
854 | * Track open sessions with osds. | |
855 | */ | |
e10006f8 | 856 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
857 | { |
858 | struct ceph_osd *osd; | |
859 | ||
860 | osd = kzalloc(sizeof(*osd), GFP_NOFS); | |
861 | if (!osd) | |
862 | return NULL; | |
863 | ||
864 | atomic_set(&osd->o_ref, 1); | |
865 | osd->o_osdc = osdc; | |
e10006f8 | 866 | osd->o_osd = onum; |
f407731d | 867 | RB_CLEAR_NODE(&osd->o_node); |
f24e9980 | 868 | INIT_LIST_HEAD(&osd->o_requests); |
a40c4f10 | 869 | INIT_LIST_HEAD(&osd->o_linger_requests); |
f5a2041b | 870 | INIT_LIST_HEAD(&osd->o_osd_lru); |
f24e9980 SW |
871 | osd->o_incarnation = 1; |
872 | ||
b7a9e5dd | 873 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 874 | |
422d2cb8 | 875 | INIT_LIST_HEAD(&osd->o_keepalive_item); |
f24e9980 SW |
876 | return osd; |
877 | } | |
878 | ||
879 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
880 | { | |
881 | if (atomic_inc_not_zero(&osd->o_ref)) { | |
882 | dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, | |
883 | atomic_read(&osd->o_ref)); | |
884 | return osd; | |
885 | } else { | |
886 | dout("get_osd %p FAIL\n", osd); | |
887 | return NULL; | |
888 | } | |
889 | } | |
890 | ||
891 | static void put_osd(struct ceph_osd *osd) | |
892 | { | |
893 | dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), | |
894 | atomic_read(&osd->o_ref) - 1); | |
a255651d | 895 | if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { |
79494d1b SW |
896 | struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; |
897 | ||
27859f97 | 898 | ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); |
f24e9980 | 899 | kfree(osd); |
79494d1b | 900 | } |
f24e9980 SW |
901 | } |
902 | ||
903 | /* | |
904 | * remove an osd from our map | |
905 | */ | |
f5a2041b | 906 | static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 907 | { |
f5a2041b | 908 | dout("__remove_osd %p\n", osd); |
f24e9980 SW |
909 | BUG_ON(!list_empty(&osd->o_requests)); |
910 | rb_erase(&osd->o_node, &osdc->osds); | |
f5a2041b | 911 | list_del_init(&osd->o_osd_lru); |
f24e9980 SW |
912 | ceph_con_close(&osd->o_con); |
913 | put_osd(osd); | |
914 | } | |
915 | ||
aca420bc SW |
916 | static void remove_all_osds(struct ceph_osd_client *osdc) |
917 | { | |
048a9d2d | 918 | dout("%s %p\n", __func__, osdc); |
aca420bc SW |
919 | mutex_lock(&osdc->request_mutex); |
920 | while (!RB_EMPTY_ROOT(&osdc->osds)) { | |
921 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
922 | struct ceph_osd, o_node); | |
923 | __remove_osd(osdc, osd); | |
924 | } | |
925 | mutex_unlock(&osdc->request_mutex); | |
926 | } | |
927 | ||
f5a2041b YS |
928 | static void __move_osd_to_lru(struct ceph_osd_client *osdc, |
929 | struct ceph_osd *osd) | |
930 | { | |
931 | dout("__move_osd_to_lru %p\n", osd); | |
932 | BUG_ON(!list_empty(&osd->o_osd_lru)); | |
933 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); | |
3d14c5d2 | 934 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; |
f5a2041b YS |
935 | } |
936 | ||
937 | static void __remove_osd_from_lru(struct ceph_osd *osd) | |
938 | { | |
939 | dout("__remove_osd_from_lru %p\n", osd); | |
940 | if (!list_empty(&osd->o_osd_lru)) | |
941 | list_del_init(&osd->o_osd_lru); | |
942 | } | |
943 | ||
aca420bc | 944 | static void remove_old_osds(struct ceph_osd_client *osdc) |
f5a2041b YS |
945 | { |
946 | struct ceph_osd *osd, *nosd; | |
947 | ||
948 | dout("__remove_old_osds %p\n", osdc); | |
949 | mutex_lock(&osdc->request_mutex); | |
950 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { | |
aca420bc | 951 | if (time_before(jiffies, osd->lru_ttl)) |
f5a2041b YS |
952 | break; |
953 | __remove_osd(osdc, osd); | |
954 | } | |
955 | mutex_unlock(&osdc->request_mutex); | |
956 | } | |
957 | ||
f24e9980 SW |
958 | /* |
959 | * reset osd connect | |
960 | */ | |
f5a2041b | 961 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 962 | { |
c3acb181 | 963 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 964 | |
f5a2041b | 965 | dout("__reset_osd %p osd%d\n", osd, osd->o_osd); |
a40c4f10 YS |
966 | if (list_empty(&osd->o_requests) && |
967 | list_empty(&osd->o_linger_requests)) { | |
f5a2041b | 968 | __remove_osd(osdc, osd); |
c3acb181 AE |
969 | |
970 | return -ENODEV; | |
971 | } | |
972 | ||
973 | peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; | |
974 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && | |
975 | !ceph_con_opened(&osd->o_con)) { | |
976 | struct ceph_osd_request *req; | |
977 | ||
87b315a5 SW |
978 | dout(" osd addr hasn't changed and connection never opened," |
979 | " letting msgr retry"); | |
980 | /* touch each r_stamp for handle_timeout()'s benfit */ | |
981 | list_for_each_entry(req, &osd->o_requests, r_osd_item) | |
982 | req->r_stamp = jiffies; | |
c3acb181 AE |
983 | |
984 | return -EAGAIN; | |
f24e9980 | 985 | } |
c3acb181 AE |
986 | |
987 | ceph_con_close(&osd->o_con); | |
988 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
989 | osd->o_incarnation++; | |
990 | ||
991 | return 0; | |
f24e9980 SW |
992 | } |
993 | ||
994 | static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) | |
995 | { | |
996 | struct rb_node **p = &osdc->osds.rb_node; | |
997 | struct rb_node *parent = NULL; | |
998 | struct ceph_osd *osd = NULL; | |
999 | ||
aca420bc | 1000 | dout("__insert_osd %p osd%d\n", new, new->o_osd); |
f24e9980 SW |
1001 | while (*p) { |
1002 | parent = *p; | |
1003 | osd = rb_entry(parent, struct ceph_osd, o_node); | |
1004 | if (new->o_osd < osd->o_osd) | |
1005 | p = &(*p)->rb_left; | |
1006 | else if (new->o_osd > osd->o_osd) | |
1007 | p = &(*p)->rb_right; | |
1008 | else | |
1009 | BUG(); | |
1010 | } | |
1011 | ||
1012 | rb_link_node(&new->o_node, parent, p); | |
1013 | rb_insert_color(&new->o_node, &osdc->osds); | |
1014 | } | |
1015 | ||
1016 | static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) | |
1017 | { | |
1018 | struct ceph_osd *osd; | |
1019 | struct rb_node *n = osdc->osds.rb_node; | |
1020 | ||
1021 | while (n) { | |
1022 | osd = rb_entry(n, struct ceph_osd, o_node); | |
1023 | if (o < osd->o_osd) | |
1024 | n = n->rb_left; | |
1025 | else if (o > osd->o_osd) | |
1026 | n = n->rb_right; | |
1027 | else | |
1028 | return osd; | |
1029 | } | |
1030 | return NULL; | |
1031 | } | |
1032 | ||
422d2cb8 YS |
1033 | static void __schedule_osd_timeout(struct ceph_osd_client *osdc) |
1034 | { | |
1035 | schedule_delayed_work(&osdc->timeout_work, | |
3d14c5d2 | 1036 | osdc->client->options->osd_keepalive_timeout * HZ); |
422d2cb8 YS |
1037 | } |
1038 | ||
1039 | static void __cancel_osd_timeout(struct ceph_osd_client *osdc) | |
1040 | { | |
1041 | cancel_delayed_work(&osdc->timeout_work); | |
1042 | } | |
f24e9980 SW |
1043 | |
1044 | /* | |
1045 | * Register request, assign tid. If this is the first request, set up | |
1046 | * the timeout event. | |
1047 | */ | |
a40c4f10 YS |
1048 | static void __register_request(struct ceph_osd_client *osdc, |
1049 | struct ceph_osd_request *req) | |
f24e9980 | 1050 | { |
f24e9980 | 1051 | req->r_tid = ++osdc->last_tid; |
6df058c0 | 1052 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); |
77f38e0e | 1053 | dout("__register_request %p tid %lld\n", req, req->r_tid); |
f24e9980 SW |
1054 | __insert_request(osdc, req); |
1055 | ceph_osdc_get_request(req); | |
1056 | osdc->num_requests++; | |
f24e9980 | 1057 | if (osdc->num_requests == 1) { |
422d2cb8 YS |
1058 | dout(" first request, scheduling timeout\n"); |
1059 | __schedule_osd_timeout(osdc); | |
f24e9980 | 1060 | } |
a40c4f10 YS |
1061 | } |
1062 | ||
f24e9980 SW |
1063 | /* |
1064 | * called under osdc->request_mutex | |
1065 | */ | |
1066 | static void __unregister_request(struct ceph_osd_client *osdc, | |
1067 | struct ceph_osd_request *req) | |
1068 | { | |
35f9f8a0 SW |
1069 | if (RB_EMPTY_NODE(&req->r_node)) { |
1070 | dout("__unregister_request %p tid %lld not registered\n", | |
1071 | req, req->r_tid); | |
1072 | return; | |
1073 | } | |
1074 | ||
f24e9980 SW |
1075 | dout("__unregister_request %p tid %lld\n", req, req->r_tid); |
1076 | rb_erase(&req->r_node, &osdc->requests); | |
1077 | osdc->num_requests--; | |
1078 | ||
0ba6478d SW |
1079 | if (req->r_osd) { |
1080 | /* make sure the original request isn't in flight. */ | |
6740a845 | 1081 | ceph_msg_revoke(req->r_request); |
0ba6478d SW |
1082 | |
1083 | list_del_init(&req->r_osd_item); | |
a40c4f10 YS |
1084 | if (list_empty(&req->r_osd->o_requests) && |
1085 | list_empty(&req->r_osd->o_linger_requests)) { | |
1086 | dout("moving osd to %p lru\n", req->r_osd); | |
f5a2041b | 1087 | __move_osd_to_lru(osdc, req->r_osd); |
a40c4f10 | 1088 | } |
fbdb9190 | 1089 | if (list_empty(&req->r_linger_item)) |
a40c4f10 | 1090 | req->r_osd = NULL; |
0ba6478d | 1091 | } |
f24e9980 | 1092 | |
7d5f2481 | 1093 | list_del_init(&req->r_req_lru_item); |
f24e9980 SW |
1094 | ceph_osdc_put_request(req); |
1095 | ||
422d2cb8 YS |
1096 | if (osdc->num_requests == 0) { |
1097 | dout(" no requests, canceling timeout\n"); | |
1098 | __cancel_osd_timeout(osdc); | |
f24e9980 SW |
1099 | } |
1100 | } | |
1101 | ||
1102 | /* | |
1103 | * Cancel a previously queued request message | |
1104 | */ | |
1105 | static void __cancel_request(struct ceph_osd_request *req) | |
1106 | { | |
6bc18876 | 1107 | if (req->r_sent && req->r_osd) { |
6740a845 | 1108 | ceph_msg_revoke(req->r_request); |
f24e9980 SW |
1109 | req->r_sent = 0; |
1110 | } | |
1111 | } | |
1112 | ||
a40c4f10 YS |
1113 | static void __register_linger_request(struct ceph_osd_client *osdc, |
1114 | struct ceph_osd_request *req) | |
1115 | { | |
1116 | dout("__register_linger_request %p\n", req); | |
1117 | list_add_tail(&req->r_linger_item, &osdc->req_linger); | |
6194ea89 SW |
1118 | if (req->r_osd) |
1119 | list_add_tail(&req->r_linger_osd, | |
1120 | &req->r_osd->o_linger_requests); | |
a40c4f10 YS |
1121 | } |
1122 | ||
1123 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
1124 | struct ceph_osd_request *req) | |
1125 | { | |
1126 | dout("__unregister_linger_request %p\n", req); | |
61c74035 | 1127 | list_del_init(&req->r_linger_item); |
a40c4f10 | 1128 | if (req->r_osd) { |
a40c4f10 YS |
1129 | list_del_init(&req->r_linger_osd); |
1130 | ||
1131 | if (list_empty(&req->r_osd->o_requests) && | |
1132 | list_empty(&req->r_osd->o_linger_requests)) { | |
1133 | dout("moving osd to %p lru\n", req->r_osd); | |
1134 | __move_osd_to_lru(osdc, req->r_osd); | |
1135 | } | |
fbdb9190 SW |
1136 | if (list_empty(&req->r_osd_item)) |
1137 | req->r_osd = NULL; | |
a40c4f10 YS |
1138 | } |
1139 | } | |
1140 | ||
1141 | void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, | |
1142 | struct ceph_osd_request *req) | |
1143 | { | |
1144 | mutex_lock(&osdc->request_mutex); | |
1145 | if (req->r_linger) { | |
1146 | __unregister_linger_request(osdc, req); | |
1147 | ceph_osdc_put_request(req); | |
1148 | } | |
1149 | mutex_unlock(&osdc->request_mutex); | |
1150 | } | |
1151 | EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); | |
1152 | ||
1153 | void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, | |
1154 | struct ceph_osd_request *req) | |
1155 | { | |
1156 | if (!req->r_linger) { | |
1157 | dout("set_request_linger %p\n", req); | |
1158 | req->r_linger = 1; | |
1159 | /* | |
1160 | * caller is now responsible for calling | |
1161 | * unregister_linger_request | |
1162 | */ | |
1163 | ceph_osdc_get_request(req); | |
1164 | } | |
1165 | } | |
1166 | EXPORT_SYMBOL(ceph_osdc_set_request_linger); | |
1167 | ||
f24e9980 SW |
1168 | /* |
1169 | * Pick an osd (the first 'up' osd in the pg), allocate the osd struct | |
1170 | * (as needed), and set the request r_osd appropriately. If there is | |
25985edc | 1171 | * no up osd, set r_osd to NULL. Move the request to the appropriate list |
6f6c7006 | 1172 | * (unsent, homeless) or leave on in-flight lru. |
f24e9980 SW |
1173 | * |
1174 | * Return 0 if unchanged, 1 if changed, or negative on error. | |
1175 | * | |
1176 | * Caller should hold map_sem for read and request_mutex. | |
1177 | */ | |
6f6c7006 | 1178 | static int __map_request(struct ceph_osd_client *osdc, |
38d6453c | 1179 | struct ceph_osd_request *req, int force_resend) |
f24e9980 | 1180 | { |
5b191d99 | 1181 | struct ceph_pg pgid; |
d85b7056 SW |
1182 | int acting[CEPH_PG_MAX_SIZE]; |
1183 | int o = -1, num = 0; | |
f24e9980 | 1184 | int err; |
f24e9980 | 1185 | |
6f6c7006 | 1186 | dout("map_request %p tid %lld\n", req, req->r_tid); |
41766f87 AE |
1187 | err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, |
1188 | ceph_file_layout_pg_pool(req->r_file_layout)); | |
6f6c7006 SW |
1189 | if (err) { |
1190 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f24e9980 | 1191 | return err; |
6f6c7006 | 1192 | } |
7740a42f SW |
1193 | req->r_pgid = pgid; |
1194 | ||
d85b7056 SW |
1195 | err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); |
1196 | if (err > 0) { | |
1197 | o = acting[0]; | |
1198 | num = err; | |
1199 | } | |
f24e9980 | 1200 | |
38d6453c SW |
1201 | if ((!force_resend && |
1202 | req->r_osd && req->r_osd->o_osd == o && | |
d85b7056 SW |
1203 | req->r_sent >= req->r_osd->o_incarnation && |
1204 | req->r_num_pg_osds == num && | |
1205 | memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || | |
f24e9980 SW |
1206 | (req->r_osd == NULL && o == -1)) |
1207 | return 0; /* no change */ | |
1208 | ||
5b191d99 SW |
1209 | dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", |
1210 | req->r_tid, pgid.pool, pgid.seed, o, | |
f24e9980 SW |
1211 | req->r_osd ? req->r_osd->o_osd : -1); |
1212 | ||
d85b7056 SW |
1213 | /* record full pg acting set */ |
1214 | memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); | |
1215 | req->r_num_pg_osds = num; | |
1216 | ||
f24e9980 SW |
1217 | if (req->r_osd) { |
1218 | __cancel_request(req); | |
1219 | list_del_init(&req->r_osd_item); | |
f24e9980 SW |
1220 | req->r_osd = NULL; |
1221 | } | |
1222 | ||
1223 | req->r_osd = __lookup_osd(osdc, o); | |
1224 | if (!req->r_osd && o >= 0) { | |
c99eb1c7 | 1225 | err = -ENOMEM; |
e10006f8 | 1226 | req->r_osd = create_osd(osdc, o); |
6f6c7006 SW |
1227 | if (!req->r_osd) { |
1228 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
c99eb1c7 | 1229 | goto out; |
6f6c7006 | 1230 | } |
f24e9980 | 1231 | |
6f6c7006 | 1232 | dout("map_request osd %p is osd%d\n", req->r_osd, o); |
f24e9980 SW |
1233 | __insert_osd(osdc, req->r_osd); |
1234 | ||
b7a9e5dd SW |
1235 | ceph_con_open(&req->r_osd->o_con, |
1236 | CEPH_ENTITY_TYPE_OSD, o, | |
1237 | &osdc->osdmap->osd_addr[o]); | |
f24e9980 SW |
1238 | } |
1239 | ||
f5a2041b YS |
1240 | if (req->r_osd) { |
1241 | __remove_osd_from_lru(req->r_osd); | |
ad885927 AE |
1242 | list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); |
1243 | list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); | |
6f6c7006 | 1244 | } else { |
ad885927 | 1245 | list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); |
f5a2041b | 1246 | } |
d85b7056 | 1247 | err = 1; /* osd or pg changed */ |
f24e9980 SW |
1248 | |
1249 | out: | |
f24e9980 SW |
1250 | return err; |
1251 | } | |
1252 | ||
1253 | /* | |
1254 | * caller should hold map_sem (for read) and request_mutex | |
1255 | */ | |
56e925b6 SW |
1256 | static void __send_request(struct ceph_osd_client *osdc, |
1257 | struct ceph_osd_request *req) | |
f24e9980 | 1258 | { |
1b83bef2 | 1259 | void *p; |
f24e9980 | 1260 | |
1b83bef2 SW |
1261 | dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", |
1262 | req, req->r_tid, req->r_osd->o_osd, req->r_flags, | |
1263 | (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); | |
1264 | ||
1265 | /* fill in message content that changes each time we send it */ | |
1266 | put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); | |
1267 | put_unaligned_le32(req->r_flags, req->r_request_flags); | |
1268 | put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); | |
1269 | p = req->r_request_pgid; | |
1270 | ceph_encode_64(&p, req->r_pgid.pool); | |
1271 | ceph_encode_32(&p, req->r_pgid.seed); | |
1272 | put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ | |
1273 | memcpy(req->r_request_reassert_version, &req->r_reassert_version, | |
1274 | sizeof(req->r_reassert_version)); | |
2169aea6 | 1275 | |
3dd72fc0 | 1276 | req->r_stamp = jiffies; |
07a27e22 | 1277 | list_move_tail(&req->r_req_lru_item, &osdc->req_lru); |
f24e9980 SW |
1278 | |
1279 | ceph_msg_get(req->r_request); /* send consumes a ref */ | |
1280 | ceph_con_send(&req->r_osd->o_con, req->r_request); | |
1281 | req->r_sent = req->r_osd->o_incarnation; | |
f24e9980 SW |
1282 | } |
1283 | ||
6f6c7006 SW |
1284 | /* |
1285 | * Send any requests in the queue (req_unsent). | |
1286 | */ | |
f9d25199 | 1287 | static void __send_queued(struct ceph_osd_client *osdc) |
6f6c7006 SW |
1288 | { |
1289 | struct ceph_osd_request *req, *tmp; | |
1290 | ||
f9d25199 AE |
1291 | dout("__send_queued\n"); |
1292 | list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) | |
6f6c7006 | 1293 | __send_request(osdc, req); |
6f6c7006 SW |
1294 | } |
1295 | ||
f24e9980 SW |
1296 | /* |
1297 | * Timeout callback, called every N seconds when 1 or more osd | |
1298 | * requests has been active for more than N seconds. When this | |
1299 | * happens, we ping all OSDs with requests who have timed out to | |
1300 | * ensure any communications channel reset is detected. Reset the | |
1301 | * request timeouts another N seconds in the future as we go. | |
1302 | * Reschedule the timeout event another N seconds in future (unless | |
1303 | * there are no open requests). | |
1304 | */ | |
1305 | static void handle_timeout(struct work_struct *work) | |
1306 | { | |
1307 | struct ceph_osd_client *osdc = | |
1308 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
83aff95e | 1309 | struct ceph_osd_request *req; |
f24e9980 | 1310 | struct ceph_osd *osd; |
422d2cb8 | 1311 | unsigned long keepalive = |
3d14c5d2 | 1312 | osdc->client->options->osd_keepalive_timeout * HZ; |
422d2cb8 | 1313 | struct list_head slow_osds; |
f24e9980 SW |
1314 | dout("timeout\n"); |
1315 | down_read(&osdc->map_sem); | |
1316 | ||
1317 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1318 | ||
1319 | mutex_lock(&osdc->request_mutex); | |
f24e9980 | 1320 | |
422d2cb8 YS |
1321 | /* |
1322 | * ping osds that are a bit slow. this ensures that if there | |
1323 | * is a break in the TCP connection we will notice, and reopen | |
1324 | * a connection with that osd (from the fault callback). | |
1325 | */ | |
1326 | INIT_LIST_HEAD(&slow_osds); | |
1327 | list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { | |
3dd72fc0 | 1328 | if (time_before(jiffies, req->r_stamp + keepalive)) |
422d2cb8 YS |
1329 | break; |
1330 | ||
1331 | osd = req->r_osd; | |
1332 | BUG_ON(!osd); | |
1333 | dout(" tid %llu is slow, will send keepalive on osd%d\n", | |
f24e9980 | 1334 | req->r_tid, osd->o_osd); |
422d2cb8 YS |
1335 | list_move_tail(&osd->o_keepalive_item, &slow_osds); |
1336 | } | |
1337 | while (!list_empty(&slow_osds)) { | |
1338 | osd = list_entry(slow_osds.next, struct ceph_osd, | |
1339 | o_keepalive_item); | |
1340 | list_del_init(&osd->o_keepalive_item); | |
f24e9980 SW |
1341 | ceph_con_keepalive(&osd->o_con); |
1342 | } | |
1343 | ||
422d2cb8 | 1344 | __schedule_osd_timeout(osdc); |
f9d25199 | 1345 | __send_queued(osdc); |
f24e9980 | 1346 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1347 | up_read(&osdc->map_sem); |
1348 | } | |
1349 | ||
f5a2041b YS |
1350 | static void handle_osds_timeout(struct work_struct *work) |
1351 | { | |
1352 | struct ceph_osd_client *osdc = | |
1353 | container_of(work, struct ceph_osd_client, | |
1354 | osds_timeout_work.work); | |
1355 | unsigned long delay = | |
3d14c5d2 | 1356 | osdc->client->options->osd_idle_ttl * HZ >> 2; |
f5a2041b YS |
1357 | |
1358 | dout("osds timeout\n"); | |
1359 | down_read(&osdc->map_sem); | |
aca420bc | 1360 | remove_old_osds(osdc); |
f5a2041b YS |
1361 | up_read(&osdc->map_sem); |
1362 | ||
1363 | schedule_delayed_work(&osdc->osds_timeout_work, | |
1364 | round_jiffies_relative(delay)); | |
1365 | } | |
1366 | ||
25845472 SW |
1367 | static void complete_request(struct ceph_osd_request *req) |
1368 | { | |
1369 | if (req->r_safe_callback) | |
1370 | req->r_safe_callback(req, NULL); | |
1371 | complete_all(&req->r_safe_completion); /* fsync waiter */ | |
1372 | } | |
1373 | ||
f24e9980 SW |
1374 | /* |
1375 | * handle osd op reply. either call the callback if it is specified, | |
1376 | * or do the completion to wake up the waiting thread. | |
1377 | */ | |
350b1c32 SW |
1378 | static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, |
1379 | struct ceph_connection *con) | |
f24e9980 | 1380 | { |
1b83bef2 | 1381 | void *p, *end; |
f24e9980 SW |
1382 | struct ceph_osd_request *req; |
1383 | u64 tid; | |
1b83bef2 | 1384 | int object_len; |
79528734 AE |
1385 | unsigned int numops; |
1386 | int payload_len, flags; | |
0ceed5db | 1387 | s32 result; |
1b83bef2 SW |
1388 | s32 retry_attempt; |
1389 | struct ceph_pg pg; | |
1390 | int err; | |
1391 | u32 reassert_epoch; | |
1392 | u64 reassert_version; | |
1393 | u32 osdmap_epoch; | |
0d5af164 | 1394 | int already_completed; |
9fc6e064 | 1395 | u32 bytes; |
79528734 | 1396 | unsigned int i; |
f24e9980 | 1397 | |
6df058c0 | 1398 | tid = le64_to_cpu(msg->hdr.tid); |
1b83bef2 SW |
1399 | dout("handle_reply %p tid %llu\n", msg, tid); |
1400 | ||
1401 | p = msg->front.iov_base; | |
1402 | end = p + msg->front.iov_len; | |
1403 | ||
1404 | ceph_decode_need(&p, end, 4, bad); | |
1405 | object_len = ceph_decode_32(&p); | |
1406 | ceph_decode_need(&p, end, object_len, bad); | |
1407 | p += object_len; | |
1408 | ||
ef4859d6 | 1409 | err = ceph_decode_pgid(&p, end, &pg); |
1b83bef2 | 1410 | if (err) |
f24e9980 | 1411 | goto bad; |
1b83bef2 SW |
1412 | |
1413 | ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); | |
1414 | flags = ceph_decode_64(&p); | |
1415 | result = ceph_decode_32(&p); | |
1416 | reassert_epoch = ceph_decode_32(&p); | |
1417 | reassert_version = ceph_decode_64(&p); | |
1418 | osdmap_epoch = ceph_decode_32(&p); | |
1419 | ||
f24e9980 SW |
1420 | /* lookup */ |
1421 | mutex_lock(&osdc->request_mutex); | |
1422 | req = __lookup_request(osdc, tid); | |
1423 | if (req == NULL) { | |
1424 | dout("handle_reply tid %llu dne\n", tid); | |
8058fd45 | 1425 | goto bad_mutex; |
f24e9980 SW |
1426 | } |
1427 | ceph_osdc_get_request(req); | |
1b83bef2 SW |
1428 | |
1429 | dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, | |
1430 | req, result); | |
1431 | ||
1432 | ceph_decode_need(&p, end, 4, bad); | |
1433 | numops = ceph_decode_32(&p); | |
1434 | if (numops > CEPH_OSD_MAX_OP) | |
1435 | goto bad_put; | |
1436 | if (numops != req->r_num_ops) | |
1437 | goto bad_put; | |
1438 | payload_len = 0; | |
1439 | ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); | |
1440 | for (i = 0; i < numops; i++) { | |
1441 | struct ceph_osd_op *op = p; | |
1442 | int len; | |
1443 | ||
1444 | len = le32_to_cpu(op->payload_len); | |
1445 | req->r_reply_op_len[i] = len; | |
1446 | dout(" op %d has %d bytes\n", i, len); | |
1447 | payload_len += len; | |
1448 | p += sizeof(*op); | |
1449 | } | |
9fc6e064 AE |
1450 | bytes = le32_to_cpu(msg->hdr.data_len); |
1451 | if (payload_len != bytes) { | |
1b83bef2 | 1452 | pr_warning("sum of op payload lens %d != data_len %d", |
9fc6e064 | 1453 | payload_len, bytes); |
1b83bef2 SW |
1454 | goto bad_put; |
1455 | } | |
1456 | ||
1457 | ceph_decode_need(&p, end, 4 + numops * 4, bad); | |
1458 | retry_attempt = ceph_decode_32(&p); | |
1459 | for (i = 0; i < numops; i++) | |
1460 | req->r_reply_op_result[i] = ceph_decode_32(&p); | |
f24e9980 | 1461 | |
f24e9980 | 1462 | if (!req->r_got_reply) { |
f24e9980 | 1463 | |
1b83bef2 | 1464 | req->r_result = result; |
f24e9980 SW |
1465 | dout("handle_reply result %d bytes %d\n", req->r_result, |
1466 | bytes); | |
1467 | if (req->r_result == 0) | |
1468 | req->r_result = bytes; | |
1469 | ||
1470 | /* in case this is a write and we need to replay, */ | |
1b83bef2 SW |
1471 | req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); |
1472 | req->r_reassert_version.version = cpu_to_le64(reassert_version); | |
f24e9980 SW |
1473 | |
1474 | req->r_got_reply = 1; | |
1475 | } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { | |
1476 | dout("handle_reply tid %llu dup ack\n", tid); | |
34b43a56 | 1477 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1478 | goto done; |
1479 | } | |
1480 | ||
1481 | dout("handle_reply tid %llu flags %d\n", tid, flags); | |
1482 | ||
a40c4f10 YS |
1483 | if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) |
1484 | __register_linger_request(osdc, req); | |
1485 | ||
f24e9980 | 1486 | /* either this is a read, or we got the safe response */ |
0ceed5db SW |
1487 | if (result < 0 || |
1488 | (flags & CEPH_OSD_FLAG_ONDISK) || | |
f24e9980 SW |
1489 | ((flags & CEPH_OSD_FLAG_WRITE) == 0)) |
1490 | __unregister_request(osdc, req); | |
1491 | ||
0d5af164 AE |
1492 | already_completed = req->r_completed; |
1493 | req->r_completed = 1; | |
f24e9980 | 1494 | mutex_unlock(&osdc->request_mutex); |
0d5af164 AE |
1495 | if (already_completed) |
1496 | goto done; | |
f24e9980 SW |
1497 | |
1498 | if (req->r_callback) | |
1499 | req->r_callback(req, msg); | |
1500 | else | |
03066f23 | 1501 | complete_all(&req->r_completion); |
f24e9980 | 1502 | |
25845472 SW |
1503 | if (flags & CEPH_OSD_FLAG_ONDISK) |
1504 | complete_request(req); | |
f24e9980 SW |
1505 | |
1506 | done: | |
a40c4f10 | 1507 | dout("req=%p req->r_linger=%d\n", req, req->r_linger); |
f24e9980 SW |
1508 | ceph_osdc_put_request(req); |
1509 | return; | |
1510 | ||
1b83bef2 SW |
1511 | bad_put: |
1512 | ceph_osdc_put_request(req); | |
8058fd45 AE |
1513 | bad_mutex: |
1514 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 1515 | bad: |
1b83bef2 SW |
1516 | pr_err("corrupt osd_op_reply got %d %d\n", |
1517 | (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); | |
9ec7cab1 | 1518 | ceph_msg_dump(msg); |
f24e9980 SW |
1519 | } |
1520 | ||
6f6c7006 | 1521 | static void reset_changed_osds(struct ceph_osd_client *osdc) |
f24e9980 | 1522 | { |
f24e9980 | 1523 | struct rb_node *p, *n; |
f24e9980 | 1524 | |
6f6c7006 SW |
1525 | for (p = rb_first(&osdc->osds); p; p = n) { |
1526 | struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); | |
f24e9980 | 1527 | |
6f6c7006 SW |
1528 | n = rb_next(p); |
1529 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
1530 | memcmp(&osd->o_con.peer_addr, | |
1531 | ceph_osd_addr(osdc->osdmap, | |
1532 | osd->o_osd), | |
1533 | sizeof(struct ceph_entity_addr)) != 0) | |
1534 | __reset_osd(osdc, osd); | |
f24e9980 | 1535 | } |
422d2cb8 YS |
1536 | } |
1537 | ||
1538 | /* | |
6f6c7006 SW |
1539 | * Requeue requests whose mapping to an OSD has changed. If requests map to |
1540 | * no osd, request a new map. | |
422d2cb8 | 1541 | * |
e6d50f67 | 1542 | * Caller should hold map_sem for read. |
422d2cb8 | 1543 | */ |
38d6453c | 1544 | static void kick_requests(struct ceph_osd_client *osdc, int force_resend) |
422d2cb8 | 1545 | { |
a40c4f10 | 1546 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
1547 | struct rb_node *p; |
1548 | int needmap = 0; | |
1549 | int err; | |
422d2cb8 | 1550 | |
38d6453c | 1551 | dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); |
422d2cb8 | 1552 | mutex_lock(&osdc->request_mutex); |
6194ea89 | 1553 | for (p = rb_first(&osdc->requests); p; ) { |
6f6c7006 | 1554 | req = rb_entry(p, struct ceph_osd_request, r_node); |
6194ea89 | 1555 | p = rb_next(p); |
ab60b16d AE |
1556 | |
1557 | /* | |
1558 | * For linger requests that have not yet been | |
1559 | * registered, move them to the linger list; they'll | |
1560 | * be sent to the osd in the loop below. Unregister | |
1561 | * the request before re-registering it as a linger | |
1562 | * request to ensure the __map_request() below | |
1563 | * will decide it needs to be sent. | |
1564 | */ | |
1565 | if (req->r_linger && list_empty(&req->r_linger_item)) { | |
1566 | dout("%p tid %llu restart on osd%d\n", | |
1567 | req, req->r_tid, | |
1568 | req->r_osd ? req->r_osd->o_osd : -1); | |
1569 | __unregister_request(osdc, req); | |
1570 | __register_linger_request(osdc, req); | |
1571 | continue; | |
1572 | } | |
1573 | ||
38d6453c | 1574 | err = __map_request(osdc, req, force_resend); |
6f6c7006 SW |
1575 | if (err < 0) |
1576 | continue; /* error */ | |
1577 | if (req->r_osd == NULL) { | |
1578 | dout("%p tid %llu maps to no osd\n", req, req->r_tid); | |
1579 | needmap++; /* request a newer map */ | |
1580 | } else if (err > 0) { | |
6194ea89 SW |
1581 | if (!req->r_linger) { |
1582 | dout("%p tid %llu requeued on osd%d\n", req, | |
1583 | req->r_tid, | |
1584 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1585 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
6194ea89 SW |
1586 | } |
1587 | } | |
a40c4f10 YS |
1588 | } |
1589 | ||
1590 | list_for_each_entry_safe(req, nreq, &osdc->req_linger, | |
1591 | r_linger_item) { | |
1592 | dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); | |
1593 | ||
38d6453c | 1594 | err = __map_request(osdc, req, force_resend); |
ab60b16d | 1595 | dout("__map_request returned %d\n", err); |
a40c4f10 YS |
1596 | if (err == 0) |
1597 | continue; /* no change and no osd was specified */ | |
1598 | if (err < 0) | |
1599 | continue; /* hrm! */ | |
1600 | if (req->r_osd == NULL) { | |
1601 | dout("tid %llu maps to no valid osd\n", req->r_tid); | |
1602 | needmap++; /* request a newer map */ | |
1603 | continue; | |
6f6c7006 | 1604 | } |
a40c4f10 YS |
1605 | |
1606 | dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, | |
1607 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1608 | __register_request(osdc, req); |
c89ce05e | 1609 | __unregister_linger_request(osdc, req); |
6f6c7006 | 1610 | } |
f24e9980 SW |
1611 | mutex_unlock(&osdc->request_mutex); |
1612 | ||
1613 | if (needmap) { | |
1614 | dout("%d requests for down osds, need new map\n", needmap); | |
1615 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1616 | } | |
e6d50f67 | 1617 | reset_changed_osds(osdc); |
422d2cb8 | 1618 | } |
6f6c7006 SW |
1619 | |
1620 | ||
f24e9980 SW |
1621 | /* |
1622 | * Process updated osd map. | |
1623 | * | |
1624 | * The message contains any number of incremental and full maps, normally | |
1625 | * indicating some sort of topology change in the cluster. Kick requests | |
1626 | * off to different OSDs as needed. | |
1627 | */ | |
1628 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
1629 | { | |
1630 | void *p, *end, *next; | |
1631 | u32 nr_maps, maplen; | |
1632 | u32 epoch; | |
1633 | struct ceph_osdmap *newmap = NULL, *oldmap; | |
1634 | int err; | |
1635 | struct ceph_fsid fsid; | |
1636 | ||
1637 | dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); | |
1638 | p = msg->front.iov_base; | |
1639 | end = p + msg->front.iov_len; | |
1640 | ||
1641 | /* verify fsid */ | |
1642 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
1643 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d SW |
1644 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
1645 | return; | |
f24e9980 SW |
1646 | |
1647 | down_write(&osdc->map_sem); | |
1648 | ||
1649 | /* incremental maps */ | |
1650 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1651 | dout(" %d inc maps\n", nr_maps); | |
1652 | while (nr_maps > 0) { | |
1653 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1654 | epoch = ceph_decode_32(&p); |
1655 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1656 | ceph_decode_need(&p, end, maplen, bad); |
1657 | next = p + maplen; | |
1658 | if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { | |
1659 | dout("applying incremental map %u len %d\n", | |
1660 | epoch, maplen); | |
1661 | newmap = osdmap_apply_incremental(&p, next, | |
1662 | osdc->osdmap, | |
15d9882c | 1663 | &osdc->client->msgr); |
f24e9980 SW |
1664 | if (IS_ERR(newmap)) { |
1665 | err = PTR_ERR(newmap); | |
1666 | goto bad; | |
1667 | } | |
30dc6381 | 1668 | BUG_ON(!newmap); |
f24e9980 SW |
1669 | if (newmap != osdc->osdmap) { |
1670 | ceph_osdmap_destroy(osdc->osdmap); | |
1671 | osdc->osdmap = newmap; | |
1672 | } | |
38d6453c | 1673 | kick_requests(osdc, 0); |
f24e9980 SW |
1674 | } else { |
1675 | dout("ignoring incremental map %u len %d\n", | |
1676 | epoch, maplen); | |
1677 | } | |
1678 | p = next; | |
1679 | nr_maps--; | |
1680 | } | |
1681 | if (newmap) | |
1682 | goto done; | |
1683 | ||
1684 | /* full maps */ | |
1685 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1686 | dout(" %d full maps\n", nr_maps); | |
1687 | while (nr_maps) { | |
1688 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1689 | epoch = ceph_decode_32(&p); |
1690 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1691 | ceph_decode_need(&p, end, maplen, bad); |
1692 | if (nr_maps > 1) { | |
1693 | dout("skipping non-latest full map %u len %d\n", | |
1694 | epoch, maplen); | |
1695 | } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { | |
1696 | dout("skipping full map %u len %d, " | |
1697 | "older than our %u\n", epoch, maplen, | |
1698 | osdc->osdmap->epoch); | |
1699 | } else { | |
38d6453c SW |
1700 | int skipped_map = 0; |
1701 | ||
f24e9980 SW |
1702 | dout("taking full map %u len %d\n", epoch, maplen); |
1703 | newmap = osdmap_decode(&p, p+maplen); | |
1704 | if (IS_ERR(newmap)) { | |
1705 | err = PTR_ERR(newmap); | |
1706 | goto bad; | |
1707 | } | |
30dc6381 | 1708 | BUG_ON(!newmap); |
f24e9980 SW |
1709 | oldmap = osdc->osdmap; |
1710 | osdc->osdmap = newmap; | |
38d6453c SW |
1711 | if (oldmap) { |
1712 | if (oldmap->epoch + 1 < newmap->epoch) | |
1713 | skipped_map = 1; | |
f24e9980 | 1714 | ceph_osdmap_destroy(oldmap); |
38d6453c SW |
1715 | } |
1716 | kick_requests(osdc, skipped_map); | |
f24e9980 SW |
1717 | } |
1718 | p += maplen; | |
1719 | nr_maps--; | |
1720 | } | |
1721 | ||
1722 | done: | |
1723 | downgrade_write(&osdc->map_sem); | |
1724 | ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); | |
cd634fb6 SW |
1725 | |
1726 | /* | |
1727 | * subscribe to subsequent osdmap updates if full to ensure | |
1728 | * we find out when we are no longer full and stop returning | |
1729 | * ENOSPC. | |
1730 | */ | |
1731 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) | |
1732 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1733 | ||
f9d25199 AE |
1734 | mutex_lock(&osdc->request_mutex); |
1735 | __send_queued(osdc); | |
1736 | mutex_unlock(&osdc->request_mutex); | |
f24e9980 | 1737 | up_read(&osdc->map_sem); |
03066f23 | 1738 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
1739 | return; |
1740 | ||
1741 | bad: | |
1742 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 1743 | ceph_msg_dump(msg); |
f24e9980 SW |
1744 | up_write(&osdc->map_sem); |
1745 | return; | |
1746 | } | |
1747 | ||
a40c4f10 YS |
1748 | /* |
1749 | * watch/notify callback event infrastructure | |
1750 | * | |
1751 | * These callbacks are used both for watch and notify operations. | |
1752 | */ | |
1753 | static void __release_event(struct kref *kref) | |
1754 | { | |
1755 | struct ceph_osd_event *event = | |
1756 | container_of(kref, struct ceph_osd_event, kref); | |
1757 | ||
1758 | dout("__release_event %p\n", event); | |
1759 | kfree(event); | |
1760 | } | |
1761 | ||
1762 | static void get_event(struct ceph_osd_event *event) | |
1763 | { | |
1764 | kref_get(&event->kref); | |
1765 | } | |
1766 | ||
1767 | void ceph_osdc_put_event(struct ceph_osd_event *event) | |
1768 | { | |
1769 | kref_put(&event->kref, __release_event); | |
1770 | } | |
1771 | EXPORT_SYMBOL(ceph_osdc_put_event); | |
1772 | ||
1773 | static void __insert_event(struct ceph_osd_client *osdc, | |
1774 | struct ceph_osd_event *new) | |
1775 | { | |
1776 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1777 | struct rb_node *parent = NULL; | |
1778 | struct ceph_osd_event *event = NULL; | |
1779 | ||
1780 | while (*p) { | |
1781 | parent = *p; | |
1782 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1783 | if (new->cookie < event->cookie) | |
1784 | p = &(*p)->rb_left; | |
1785 | else if (new->cookie > event->cookie) | |
1786 | p = &(*p)->rb_right; | |
1787 | else | |
1788 | BUG(); | |
1789 | } | |
1790 | ||
1791 | rb_link_node(&new->node, parent, p); | |
1792 | rb_insert_color(&new->node, &osdc->event_tree); | |
1793 | } | |
1794 | ||
1795 | static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, | |
1796 | u64 cookie) | |
1797 | { | |
1798 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1799 | struct rb_node *parent = NULL; | |
1800 | struct ceph_osd_event *event = NULL; | |
1801 | ||
1802 | while (*p) { | |
1803 | parent = *p; | |
1804 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1805 | if (cookie < event->cookie) | |
1806 | p = &(*p)->rb_left; | |
1807 | else if (cookie > event->cookie) | |
1808 | p = &(*p)->rb_right; | |
1809 | else | |
1810 | return event; | |
1811 | } | |
1812 | return NULL; | |
1813 | } | |
1814 | ||
1815 | static void __remove_event(struct ceph_osd_event *event) | |
1816 | { | |
1817 | struct ceph_osd_client *osdc = event->osdc; | |
1818 | ||
1819 | if (!RB_EMPTY_NODE(&event->node)) { | |
1820 | dout("__remove_event removed %p\n", event); | |
1821 | rb_erase(&event->node, &osdc->event_tree); | |
1822 | ceph_osdc_put_event(event); | |
1823 | } else { | |
1824 | dout("__remove_event didn't remove %p\n", event); | |
1825 | } | |
1826 | } | |
1827 | ||
1828 | int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
1829 | void (*event_cb)(u64, u64, u8, void *), | |
3c663bbd | 1830 | void *data, struct ceph_osd_event **pevent) |
a40c4f10 YS |
1831 | { |
1832 | struct ceph_osd_event *event; | |
1833 | ||
1834 | event = kmalloc(sizeof(*event), GFP_NOIO); | |
1835 | if (!event) | |
1836 | return -ENOMEM; | |
1837 | ||
1838 | dout("create_event %p\n", event); | |
1839 | event->cb = event_cb; | |
3c663bbd | 1840 | event->one_shot = 0; |
a40c4f10 YS |
1841 | event->data = data; |
1842 | event->osdc = osdc; | |
1843 | INIT_LIST_HEAD(&event->osd_node); | |
3ee5234d | 1844 | RB_CLEAR_NODE(&event->node); |
a40c4f10 YS |
1845 | kref_init(&event->kref); /* one ref for us */ |
1846 | kref_get(&event->kref); /* one ref for the caller */ | |
a40c4f10 YS |
1847 | |
1848 | spin_lock(&osdc->event_lock); | |
1849 | event->cookie = ++osdc->event_count; | |
1850 | __insert_event(osdc, event); | |
1851 | spin_unlock(&osdc->event_lock); | |
1852 | ||
1853 | *pevent = event; | |
1854 | return 0; | |
1855 | } | |
1856 | EXPORT_SYMBOL(ceph_osdc_create_event); | |
1857 | ||
1858 | void ceph_osdc_cancel_event(struct ceph_osd_event *event) | |
1859 | { | |
1860 | struct ceph_osd_client *osdc = event->osdc; | |
1861 | ||
1862 | dout("cancel_event %p\n", event); | |
1863 | spin_lock(&osdc->event_lock); | |
1864 | __remove_event(event); | |
1865 | spin_unlock(&osdc->event_lock); | |
1866 | ceph_osdc_put_event(event); /* caller's */ | |
1867 | } | |
1868 | EXPORT_SYMBOL(ceph_osdc_cancel_event); | |
1869 | ||
1870 | ||
1871 | static void do_event_work(struct work_struct *work) | |
1872 | { | |
1873 | struct ceph_osd_event_work *event_work = | |
1874 | container_of(work, struct ceph_osd_event_work, work); | |
1875 | struct ceph_osd_event *event = event_work->event; | |
1876 | u64 ver = event_work->ver; | |
1877 | u64 notify_id = event_work->notify_id; | |
1878 | u8 opcode = event_work->opcode; | |
1879 | ||
1880 | dout("do_event_work completing %p\n", event); | |
1881 | event->cb(ver, notify_id, opcode, event->data); | |
a40c4f10 YS |
1882 | dout("do_event_work completed %p\n", event); |
1883 | ceph_osdc_put_event(event); | |
1884 | kfree(event_work); | |
1885 | } | |
1886 | ||
1887 | ||
1888 | /* | |
1889 | * Process osd watch notifications | |
1890 | */ | |
3c663bbd AE |
1891 | static void handle_watch_notify(struct ceph_osd_client *osdc, |
1892 | struct ceph_msg *msg) | |
a40c4f10 YS |
1893 | { |
1894 | void *p, *end; | |
1895 | u8 proto_ver; | |
1896 | u64 cookie, ver, notify_id; | |
1897 | u8 opcode; | |
1898 | struct ceph_osd_event *event; | |
1899 | struct ceph_osd_event_work *event_work; | |
1900 | ||
1901 | p = msg->front.iov_base; | |
1902 | end = p + msg->front.iov_len; | |
1903 | ||
1904 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
1905 | ceph_decode_8_safe(&p, end, opcode, bad); | |
1906 | ceph_decode_64_safe(&p, end, cookie, bad); | |
1907 | ceph_decode_64_safe(&p, end, ver, bad); | |
1908 | ceph_decode_64_safe(&p, end, notify_id, bad); | |
1909 | ||
1910 | spin_lock(&osdc->event_lock); | |
1911 | event = __find_event(osdc, cookie); | |
1912 | if (event) { | |
3c663bbd | 1913 | BUG_ON(event->one_shot); |
a40c4f10 | 1914 | get_event(event); |
a40c4f10 YS |
1915 | } |
1916 | spin_unlock(&osdc->event_lock); | |
1917 | dout("handle_watch_notify cookie %lld ver %lld event %p\n", | |
1918 | cookie, ver, event); | |
1919 | if (event) { | |
1920 | event_work = kmalloc(sizeof(*event_work), GFP_NOIO); | |
a40c4f10 YS |
1921 | if (!event_work) { |
1922 | dout("ERROR: could not allocate event_work\n"); | |
1923 | goto done_err; | |
1924 | } | |
6b0ae409 | 1925 | INIT_WORK(&event_work->work, do_event_work); |
a40c4f10 YS |
1926 | event_work->event = event; |
1927 | event_work->ver = ver; | |
1928 | event_work->notify_id = notify_id; | |
1929 | event_work->opcode = opcode; | |
1930 | if (!queue_work(osdc->notify_wq, &event_work->work)) { | |
1931 | dout("WARNING: failed to queue notify event work\n"); | |
1932 | goto done_err; | |
1933 | } | |
1934 | } | |
1935 | ||
1936 | return; | |
1937 | ||
1938 | done_err: | |
a40c4f10 YS |
1939 | ceph_osdc_put_event(event); |
1940 | return; | |
1941 | ||
1942 | bad: | |
1943 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
1944 | return; | |
1945 | } | |
1946 | ||
70636773 AE |
1947 | static void ceph_osdc_msg_data_set(struct ceph_msg *msg, |
1948 | struct ceph_osd_data *osd_data) | |
f24e9980 | 1949 | { |
23c08a9c AE |
1950 | u64 length = ceph_osd_data_length(osd_data); |
1951 | ||
0fff87ec | 1952 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { |
23c08a9c AE |
1953 | BUG_ON(length > (u64) SIZE_MAX); |
1954 | if (length) | |
70636773 | 1955 | ceph_msg_data_set_pages(msg, osd_data->pages, |
23c08a9c | 1956 | length, osd_data->alignment); |
9a5e6d09 | 1957 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { |
23c08a9c | 1958 | BUG_ON(!length); |
9a5e6d09 | 1959 | ceph_msg_data_set_pagelist(msg, osd_data->pagelist); |
68b4476b | 1960 | #ifdef CONFIG_BLOCK |
0fff87ec | 1961 | } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { |
23c08a9c | 1962 | ceph_msg_data_set_bio(msg, osd_data->bio, length); |
68b4476b | 1963 | #endif |
2ac2b7a6 | 1964 | } else { |
0fff87ec | 1965 | BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); |
2ac2b7a6 | 1966 | } |
70636773 AE |
1967 | } |
1968 | ||
1969 | /* | |
1970 | * Register request, send initial attempt. | |
1971 | */ | |
1972 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
1973 | struct ceph_osd_request *req, | |
1974 | bool nofail) | |
1975 | { | |
1976 | int rc = 0; | |
1977 | ||
1978 | /* Set up response incoming data and request outgoing data fields */ | |
1979 | ||
1980 | ceph_osdc_msg_data_set(req->r_reply, &req->r_data_in); | |
1981 | ceph_osdc_msg_data_set(req->r_request, &req->r_data_out); | |
f24e9980 | 1982 | |
f24e9980 SW |
1983 | down_read(&osdc->map_sem); |
1984 | mutex_lock(&osdc->request_mutex); | |
dc4b870c | 1985 | __register_request(osdc, req); |
92451b49 AE |
1986 | WARN_ON(req->r_sent); |
1987 | rc = __map_request(osdc, req, 0); | |
1988 | if (rc < 0) { | |
1989 | if (nofail) { | |
1990 | dout("osdc_start_request failed map, " | |
1991 | " will retry %lld\n", req->r_tid); | |
1992 | rc = 0; | |
f24e9980 | 1993 | } |
92451b49 | 1994 | goto out_unlock; |
f24e9980 | 1995 | } |
92451b49 AE |
1996 | if (req->r_osd == NULL) { |
1997 | dout("send_request %p no up osds in pg\n", req); | |
1998 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1999 | } else { | |
7e2766a1 | 2000 | __send_queued(osdc); |
92451b49 AE |
2001 | } |
2002 | rc = 0; | |
234af26f | 2003 | out_unlock: |
f24e9980 SW |
2004 | mutex_unlock(&osdc->request_mutex); |
2005 | up_read(&osdc->map_sem); | |
2006 | return rc; | |
2007 | } | |
3d14c5d2 | 2008 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 SW |
2009 | |
2010 | /* | |
2011 | * wait for a request to complete | |
2012 | */ | |
2013 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
2014 | struct ceph_osd_request *req) | |
2015 | { | |
2016 | int rc; | |
2017 | ||
2018 | rc = wait_for_completion_interruptible(&req->r_completion); | |
2019 | if (rc < 0) { | |
2020 | mutex_lock(&osdc->request_mutex); | |
2021 | __cancel_request(req); | |
529cfcc4 | 2022 | __unregister_request(osdc, req); |
f24e9980 | 2023 | mutex_unlock(&osdc->request_mutex); |
25845472 | 2024 | complete_request(req); |
529cfcc4 | 2025 | dout("wait_request tid %llu canceled/timed out\n", req->r_tid); |
f24e9980 SW |
2026 | return rc; |
2027 | } | |
2028 | ||
2029 | dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); | |
2030 | return req->r_result; | |
2031 | } | |
3d14c5d2 | 2032 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
2033 | |
2034 | /* | |
2035 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
2036 | */ | |
2037 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
2038 | { | |
2039 | struct ceph_osd_request *req; | |
2040 | u64 last_tid, next_tid = 0; | |
2041 | ||
2042 | mutex_lock(&osdc->request_mutex); | |
2043 | last_tid = osdc->last_tid; | |
2044 | while (1) { | |
2045 | req = __lookup_request_ge(osdc, next_tid); | |
2046 | if (!req) | |
2047 | break; | |
2048 | if (req->r_tid > last_tid) | |
2049 | break; | |
2050 | ||
2051 | next_tid = req->r_tid + 1; | |
2052 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) | |
2053 | continue; | |
2054 | ||
2055 | ceph_osdc_get_request(req); | |
2056 | mutex_unlock(&osdc->request_mutex); | |
2057 | dout("sync waiting on tid %llu (last is %llu)\n", | |
2058 | req->r_tid, last_tid); | |
2059 | wait_for_completion(&req->r_safe_completion); | |
2060 | mutex_lock(&osdc->request_mutex); | |
2061 | ceph_osdc_put_request(req); | |
2062 | } | |
2063 | mutex_unlock(&osdc->request_mutex); | |
2064 | dout("sync done (thru tid %llu)\n", last_tid); | |
2065 | } | |
3d14c5d2 | 2066 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 SW |
2067 | |
2068 | /* | |
2069 | * init, shutdown | |
2070 | */ | |
2071 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
2072 | { | |
2073 | int err; | |
2074 | ||
2075 | dout("init\n"); | |
2076 | osdc->client = client; | |
2077 | osdc->osdmap = NULL; | |
2078 | init_rwsem(&osdc->map_sem); | |
2079 | init_completion(&osdc->map_waiters); | |
2080 | osdc->last_requested_map = 0; | |
2081 | mutex_init(&osdc->request_mutex); | |
f24e9980 SW |
2082 | osdc->last_tid = 0; |
2083 | osdc->osds = RB_ROOT; | |
f5a2041b | 2084 | INIT_LIST_HEAD(&osdc->osd_lru); |
f24e9980 | 2085 | osdc->requests = RB_ROOT; |
422d2cb8 | 2086 | INIT_LIST_HEAD(&osdc->req_lru); |
6f6c7006 SW |
2087 | INIT_LIST_HEAD(&osdc->req_unsent); |
2088 | INIT_LIST_HEAD(&osdc->req_notarget); | |
a40c4f10 | 2089 | INIT_LIST_HEAD(&osdc->req_linger); |
f24e9980 SW |
2090 | osdc->num_requests = 0; |
2091 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); | |
f5a2041b | 2092 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10 YS |
2093 | spin_lock_init(&osdc->event_lock); |
2094 | osdc->event_tree = RB_ROOT; | |
2095 | osdc->event_count = 0; | |
f5a2041b YS |
2096 | |
2097 | schedule_delayed_work(&osdc->osds_timeout_work, | |
3d14c5d2 | 2098 | round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); |
f24e9980 | 2099 | |
5f44f142 | 2100 | err = -ENOMEM; |
f24e9980 SW |
2101 | osdc->req_mempool = mempool_create_kmalloc_pool(10, |
2102 | sizeof(struct ceph_osd_request)); | |
2103 | if (!osdc->req_mempool) | |
5f44f142 | 2104 | goto out; |
f24e9980 | 2105 | |
d50b409f SW |
2106 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
2107 | OSD_OP_FRONT_LEN, 10, true, | |
4f48280e | 2108 | "osd_op"); |
f24e9980 | 2109 | if (err < 0) |
5f44f142 | 2110 | goto out_mempool; |
d50b409f | 2111 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
4f48280e SW |
2112 | OSD_OPREPLY_FRONT_LEN, 10, true, |
2113 | "osd_op_reply"); | |
c16e7869 SW |
2114 | if (err < 0) |
2115 | goto out_msgpool; | |
a40c4f10 YS |
2116 | |
2117 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); | |
2118 | if (IS_ERR(osdc->notify_wq)) { | |
2119 | err = PTR_ERR(osdc->notify_wq); | |
2120 | osdc->notify_wq = NULL; | |
2121 | goto out_msgpool; | |
2122 | } | |
f24e9980 | 2123 | return 0; |
5f44f142 | 2124 | |
c16e7869 SW |
2125 | out_msgpool: |
2126 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
2127 | out_mempool: |
2128 | mempool_destroy(osdc->req_mempool); | |
2129 | out: | |
2130 | return err; | |
f24e9980 SW |
2131 | } |
2132 | ||
2133 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
2134 | { | |
a40c4f10 YS |
2135 | flush_workqueue(osdc->notify_wq); |
2136 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 2137 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 2138 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
f24e9980 SW |
2139 | if (osdc->osdmap) { |
2140 | ceph_osdmap_destroy(osdc->osdmap); | |
2141 | osdc->osdmap = NULL; | |
2142 | } | |
aca420bc | 2143 | remove_all_osds(osdc); |
f24e9980 SW |
2144 | mempool_destroy(osdc->req_mempool); |
2145 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 2146 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 SW |
2147 | } |
2148 | ||
2149 | /* | |
2150 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
2151 | * *plen. Return number of bytes read, or error. | |
2152 | */ | |
2153 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
2154 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
2155 | u64 off, u64 *plen, | |
2156 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 2157 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
2158 | { |
2159 | struct ceph_osd_request *req; | |
2160 | int rc = 0; | |
2161 | ||
2162 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
2163 | vino.snap, off, *plen); | |
79528734 | 2164 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1, |
f24e9980 | 2165 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, |
acead002 | 2166 | NULL, truncate_seq, truncate_size, |
153e5167 | 2167 | false); |
6816282d SW |
2168 | if (IS_ERR(req)) |
2169 | return PTR_ERR(req); | |
f24e9980 SW |
2170 | |
2171 | /* it may be a short read due to an object boundary */ | |
0fff87ec | 2172 | |
43bfe5de AE |
2173 | ceph_osd_data_pages_init(&req->r_data_in, pages, *plen, page_align, |
2174 | false, false); | |
f24e9980 | 2175 | |
e0c59487 | 2176 | dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", |
43bfe5de | 2177 | off, *plen, *plen, page_align); |
f24e9980 | 2178 | |
79528734 | 2179 | ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); |
02ee07d3 | 2180 | |
f24e9980 SW |
2181 | rc = ceph_osdc_start_request(osdc, req, false); |
2182 | if (!rc) | |
2183 | rc = ceph_osdc_wait_request(osdc, req); | |
2184 | ||
2185 | ceph_osdc_put_request(req); | |
2186 | dout("readpages result %d\n", rc); | |
2187 | return rc; | |
2188 | } | |
3d14c5d2 | 2189 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
2190 | |
2191 | /* | |
2192 | * do a synchronous write on N pages | |
2193 | */ | |
2194 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
2195 | struct ceph_file_layout *layout, | |
2196 | struct ceph_snap_context *snapc, | |
2197 | u64 off, u64 len, | |
2198 | u32 truncate_seq, u64 truncate_size, | |
2199 | struct timespec *mtime, | |
24808826 | 2200 | struct page **pages, int num_pages) |
f24e9980 SW |
2201 | { |
2202 | struct ceph_osd_request *req; | |
2203 | int rc = 0; | |
b7495fc2 | 2204 | int page_align = off & ~PAGE_MASK; |
f24e9980 | 2205 | |
acead002 | 2206 | BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ |
79528734 | 2207 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1, |
f24e9980 | 2208 | CEPH_OSD_OP_WRITE, |
24808826 | 2209 | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, |
acead002 | 2210 | snapc, truncate_seq, truncate_size, |
153e5167 | 2211 | true); |
6816282d SW |
2212 | if (IS_ERR(req)) |
2213 | return PTR_ERR(req); | |
f24e9980 SW |
2214 | |
2215 | /* it may be a short write due to an object boundary */ | |
43bfe5de AE |
2216 | ceph_osd_data_pages_init(&req->r_data_out, pages, len, page_align, |
2217 | false, false); | |
2218 | dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); | |
f24e9980 | 2219 | |
79528734 | 2220 | ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); |
02ee07d3 | 2221 | |
87f979d3 | 2222 | rc = ceph_osdc_start_request(osdc, req, true); |
f24e9980 SW |
2223 | if (!rc) |
2224 | rc = ceph_osdc_wait_request(osdc, req); | |
2225 | ||
2226 | ceph_osdc_put_request(req); | |
2227 | if (rc == 0) | |
2228 | rc = len; | |
2229 | dout("writepages result %d\n", rc); | |
2230 | return rc; | |
2231 | } | |
3d14c5d2 | 2232 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 SW |
2233 | |
2234 | /* | |
2235 | * handle incoming message | |
2236 | */ | |
2237 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
2238 | { | |
2239 | struct ceph_osd *osd = con->private; | |
32c895e7 | 2240 | struct ceph_osd_client *osdc; |
f24e9980 SW |
2241 | int type = le16_to_cpu(msg->hdr.type); |
2242 | ||
2243 | if (!osd) | |
4a32f93d | 2244 | goto out; |
32c895e7 | 2245 | osdc = osd->o_osdc; |
f24e9980 SW |
2246 | |
2247 | switch (type) { | |
2248 | case CEPH_MSG_OSD_MAP: | |
2249 | ceph_osdc_handle_map(osdc, msg); | |
2250 | break; | |
2251 | case CEPH_MSG_OSD_OPREPLY: | |
350b1c32 | 2252 | handle_reply(osdc, msg, con); |
f24e9980 | 2253 | break; |
a40c4f10 YS |
2254 | case CEPH_MSG_WATCH_NOTIFY: |
2255 | handle_watch_notify(osdc, msg); | |
2256 | break; | |
f24e9980 SW |
2257 | |
2258 | default: | |
2259 | pr_err("received unknown message type %d %s\n", type, | |
2260 | ceph_msg_type_name(type)); | |
2261 | } | |
4a32f93d | 2262 | out: |
f24e9980 SW |
2263 | ceph_msg_put(msg); |
2264 | } | |
2265 | ||
5b3a4db3 | 2266 | /* |
21b667f6 SW |
2267 | * lookup and return message for incoming reply. set up reply message |
2268 | * pages. | |
5b3a4db3 SW |
2269 | */ |
2270 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
2271 | struct ceph_msg_header *hdr, |
2272 | int *skip) | |
f24e9980 SW |
2273 | { |
2274 | struct ceph_osd *osd = con->private; | |
2275 | struct ceph_osd_client *osdc = osd->o_osdc; | |
2450418c | 2276 | struct ceph_msg *m; |
0547a9b3 | 2277 | struct ceph_osd_request *req; |
5b3a4db3 SW |
2278 | int front = le32_to_cpu(hdr->front_len); |
2279 | int data_len = le32_to_cpu(hdr->data_len); | |
0547a9b3 | 2280 | u64 tid; |
f24e9980 | 2281 | |
0547a9b3 YS |
2282 | tid = le64_to_cpu(hdr->tid); |
2283 | mutex_lock(&osdc->request_mutex); | |
2284 | req = __lookup_request(osdc, tid); | |
2285 | if (!req) { | |
2286 | *skip = 1; | |
2287 | m = NULL; | |
756a16a5 SW |
2288 | dout("get_reply unknown tid %llu from osd%d\n", tid, |
2289 | osd->o_osd); | |
0547a9b3 YS |
2290 | goto out; |
2291 | } | |
c16e7869 | 2292 | |
ace6d3a9 | 2293 | if (req->r_reply->con) |
8921d114 | 2294 | dout("%s revoking msg %p from old con %p\n", __func__, |
ace6d3a9 AE |
2295 | req->r_reply, req->r_reply->con); |
2296 | ceph_msg_revoke_incoming(req->r_reply); | |
0547a9b3 | 2297 | |
c16e7869 SW |
2298 | if (front > req->r_reply->front.iov_len) { |
2299 | pr_warning("get_reply front %d > preallocated %d\n", | |
2300 | front, (int)req->r_reply->front.iov_len); | |
b61c2763 | 2301 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); |
a79832f2 | 2302 | if (!m) |
c16e7869 SW |
2303 | goto out; |
2304 | ceph_msg_put(req->r_reply); | |
2305 | req->r_reply = m; | |
2306 | } | |
2307 | m = ceph_msg_get(req->r_reply); | |
2308 | ||
0547a9b3 | 2309 | if (data_len > 0) { |
0fff87ec AE |
2310 | struct ceph_osd_data *osd_data = &req->r_data_in; |
2311 | ||
2312 | if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { | |
0fff87ec | 2313 | if (osd_data->pages && |
e0c59487 | 2314 | unlikely(osd_data->length < data_len)) { |
2ac2b7a6 | 2315 | |
e0c59487 AE |
2316 | pr_warning("tid %lld reply has %d bytes " |
2317 | "we had only %llu bytes ready\n", | |
2318 | tid, data_len, osd_data->length); | |
2ac2b7a6 AE |
2319 | *skip = 1; |
2320 | ceph_msg_put(m); | |
2321 | m = NULL; | |
2322 | goto out; | |
2323 | } | |
2ac2b7a6 | 2324 | } |
0547a9b3 | 2325 | } |
5b3a4db3 | 2326 | *skip = 0; |
c16e7869 | 2327 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 YS |
2328 | |
2329 | out: | |
2330 | mutex_unlock(&osdc->request_mutex); | |
2450418c | 2331 | return m; |
5b3a4db3 SW |
2332 | |
2333 | } | |
2334 | ||
2335 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, | |
2336 | struct ceph_msg_header *hdr, | |
2337 | int *skip) | |
2338 | { | |
2339 | struct ceph_osd *osd = con->private; | |
2340 | int type = le16_to_cpu(hdr->type); | |
2341 | int front = le32_to_cpu(hdr->front_len); | |
2342 | ||
1c20f2d2 | 2343 | *skip = 0; |
5b3a4db3 SW |
2344 | switch (type) { |
2345 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 2346 | case CEPH_MSG_WATCH_NOTIFY: |
b61c2763 | 2347 | return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3 SW |
2348 | case CEPH_MSG_OSD_OPREPLY: |
2349 | return get_reply(con, hdr, skip); | |
2350 | default: | |
2351 | pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, | |
2352 | osd->o_osd); | |
2353 | *skip = 1; | |
2354 | return NULL; | |
2355 | } | |
f24e9980 SW |
2356 | } |
2357 | ||
2358 | /* | |
2359 | * Wrappers to refcount containing ceph_osd struct | |
2360 | */ | |
2361 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
2362 | { | |
2363 | struct ceph_osd *osd = con->private; | |
2364 | if (get_osd(osd)) | |
2365 | return con; | |
2366 | return NULL; | |
2367 | } | |
2368 | ||
2369 | static void put_osd_con(struct ceph_connection *con) | |
2370 | { | |
2371 | struct ceph_osd *osd = con->private; | |
2372 | put_osd(osd); | |
2373 | } | |
2374 | ||
4e7a5dcd SW |
2375 | /* |
2376 | * authentication | |
2377 | */ | |
a3530df3 AE |
2378 | /* |
2379 | * Note: returned pointer is the address of a structure that's | |
2380 | * managed separately. Caller must *not* attempt to free it. | |
2381 | */ | |
2382 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 2383 | int *proto, int force_new) |
4e7a5dcd SW |
2384 | { |
2385 | struct ceph_osd *o = con->private; | |
2386 | struct ceph_osd_client *osdc = o->o_osdc; | |
2387 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 2388 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 2389 | |
74f1869f | 2390 | if (force_new && auth->authorizer) { |
27859f97 | 2391 | ceph_auth_destroy_authorizer(ac, auth->authorizer); |
74f1869f AE |
2392 | auth->authorizer = NULL; |
2393 | } | |
27859f97 SW |
2394 | if (!auth->authorizer) { |
2395 | int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
2396 | auth); | |
4e7a5dcd | 2397 | if (ret) |
a3530df3 | 2398 | return ERR_PTR(ret); |
27859f97 SW |
2399 | } else { |
2400 | int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, | |
0bed9b5c SW |
2401 | auth); |
2402 | if (ret) | |
2403 | return ERR_PTR(ret); | |
4e7a5dcd | 2404 | } |
4e7a5dcd | 2405 | *proto = ac->protocol; |
74f1869f | 2406 | |
a3530df3 | 2407 | return auth; |
4e7a5dcd SW |
2408 | } |
2409 | ||
2410 | ||
2411 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
2412 | { | |
2413 | struct ceph_osd *o = con->private; | |
2414 | struct ceph_osd_client *osdc = o->o_osdc; | |
2415 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2416 | ||
27859f97 | 2417 | return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
2418 | } |
2419 | ||
9bd2e6f8 SW |
2420 | static int invalidate_authorizer(struct ceph_connection *con) |
2421 | { | |
2422 | struct ceph_osd *o = con->private; | |
2423 | struct ceph_osd_client *osdc = o->o_osdc; | |
2424 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2425 | ||
27859f97 | 2426 | ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
9bd2e6f8 SW |
2427 | return ceph_monc_validate_auth(&osdc->client->monc); |
2428 | } | |
4e7a5dcd | 2429 | |
9e32789f | 2430 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
2431 | .get = get_osd_con, |
2432 | .put = put_osd_con, | |
2433 | .dispatch = dispatch, | |
4e7a5dcd SW |
2434 | .get_authorizer = get_authorizer, |
2435 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 2436 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 2437 | .alloc_msg = alloc_msg, |
81b024e7 | 2438 | .fault = osd_reset, |
f24e9980 | 2439 | }; |