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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 | |
6f6c7006 SW |
26 | static void send_queued(struct ceph_osd_client *osdc); |
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 | 34 | |
68b4476b YS |
35 | static int op_needs_trail(int op) |
36 | { | |
37 | switch (op) { | |
38 | case CEPH_OSD_OP_GETXATTR: | |
39 | case CEPH_OSD_OP_SETXATTR: | |
40 | case CEPH_OSD_OP_CMPXATTR: | |
41 | case CEPH_OSD_OP_CALL: | |
a40c4f10 | 42 | case CEPH_OSD_OP_NOTIFY: |
68b4476b YS |
43 | return 1; |
44 | default: | |
45 | return 0; | |
46 | } | |
47 | } | |
48 | ||
49 | static int op_has_extent(int op) | |
50 | { | |
51 | return (op == CEPH_OSD_OP_READ || | |
52 | op == CEPH_OSD_OP_WRITE); | |
53 | } | |
54 | ||
3499e8a5 YS |
55 | void ceph_calc_raw_layout(struct ceph_osd_client *osdc, |
56 | struct ceph_file_layout *layout, | |
57 | u64 snapid, | |
68b4476b YS |
58 | u64 off, u64 *plen, u64 *bno, |
59 | struct ceph_osd_request *req, | |
60 | struct ceph_osd_req_op *op) | |
3499e8a5 YS |
61 | { |
62 | struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base; | |
68b4476b | 63 | u64 orig_len = *plen; |
3499e8a5 YS |
64 | u64 objoff, objlen; /* extent in object */ |
65 | ||
66 | reqhead->snapid = cpu_to_le64(snapid); | |
67 | ||
68 | /* object extent? */ | |
68b4476b | 69 | ceph_calc_file_object_mapping(layout, off, plen, bno, |
3499e8a5 | 70 | &objoff, &objlen); |
68b4476b | 71 | if (*plen < orig_len) |
3499e8a5 | 72 | dout(" skipping last %llu, final file extent %llu~%llu\n", |
68b4476b | 73 | orig_len - *plen, off, *plen); |
3499e8a5 | 74 | |
68b4476b YS |
75 | if (op_has_extent(op->op)) { |
76 | op->extent.offset = objoff; | |
77 | op->extent.length = objlen; | |
78 | } | |
79 | req->r_num_pages = calc_pages_for(off, *plen); | |
b7495fc2 | 80 | req->r_page_alignment = off & ~PAGE_MASK; |
3d14c5d2 YS |
81 | if (op->op == CEPH_OSD_OP_WRITE) |
82 | op->payload_len = *plen; | |
3499e8a5 YS |
83 | |
84 | dout("calc_layout bno=%llx %llu~%llu (%d pages)\n", | |
85 | *bno, objoff, objlen, req->r_num_pages); | |
86 | ||
87 | } | |
3d14c5d2 | 88 | EXPORT_SYMBOL(ceph_calc_raw_layout); |
3499e8a5 | 89 | |
f24e9980 SW |
90 | /* |
91 | * Implement client access to distributed object storage cluster. | |
92 | * | |
93 | * All data objects are stored within a cluster/cloud of OSDs, or | |
94 | * "object storage devices." (Note that Ceph OSDs have _nothing_ to | |
95 | * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply | |
96 | * remote daemons serving up and coordinating consistent and safe | |
97 | * access to storage. | |
98 | * | |
99 | * Cluster membership and the mapping of data objects onto storage devices | |
100 | * are described by the osd map. | |
101 | * | |
102 | * We keep track of pending OSD requests (read, write), resubmit | |
103 | * requests to different OSDs when the cluster topology/data layout | |
104 | * change, or retry the affected requests when the communications | |
105 | * channel with an OSD is reset. | |
106 | */ | |
107 | ||
108 | /* | |
109 | * calculate the mapping of a file extent onto an object, and fill out the | |
110 | * request accordingly. shorten extent as necessary if it crosses an | |
111 | * object boundary. | |
112 | * | |
113 | * fill osd op in request message. | |
114 | */ | |
115 | static void calc_layout(struct ceph_osd_client *osdc, | |
3499e8a5 YS |
116 | struct ceph_vino vino, |
117 | struct ceph_file_layout *layout, | |
f24e9980 | 118 | u64 off, u64 *plen, |
68b4476b YS |
119 | struct ceph_osd_request *req, |
120 | struct ceph_osd_req_op *op) | |
f24e9980 | 121 | { |
f24e9980 SW |
122 | u64 bno; |
123 | ||
68b4476b YS |
124 | ceph_calc_raw_layout(osdc, layout, vino.snap, off, |
125 | plen, &bno, req, op); | |
f24e9980 | 126 | |
2dab036b | 127 | snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno); |
f24e9980 | 128 | req->r_oid_len = strlen(req->r_oid); |
f24e9980 SW |
129 | } |
130 | ||
f24e9980 SW |
131 | /* |
132 | * requests | |
133 | */ | |
415e49a9 | 134 | void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 135 | { |
415e49a9 SW |
136 | struct ceph_osd_request *req = container_of(kref, |
137 | struct ceph_osd_request, | |
138 | r_kref); | |
139 | ||
140 | if (req->r_request) | |
141 | ceph_msg_put(req->r_request); | |
0d59ab81 | 142 | if (req->r_con_filling_msg) { |
8921d114 | 143 | dout("%s revoking pages %p from con %p\n", __func__, |
0d59ab81 | 144 | req->r_pages, req->r_con_filling_msg); |
8921d114 | 145 | ceph_msg_revoke_incoming(req->r_reply); |
0d47766f | 146 | req->r_con_filling_msg->ops->put(req->r_con_filling_msg); |
350b1c32 | 147 | } |
ab8cb34a AE |
148 | if (req->r_reply) |
149 | ceph_msg_put(req->r_reply); | |
415e49a9 SW |
150 | if (req->r_own_pages) |
151 | ceph_release_page_vector(req->r_pages, | |
152 | req->r_num_pages); | |
68b4476b YS |
153 | #ifdef CONFIG_BLOCK |
154 | if (req->r_bio) | |
155 | bio_put(req->r_bio); | |
156 | #endif | |
415e49a9 | 157 | ceph_put_snap_context(req->r_snapc); |
68b4476b YS |
158 | if (req->r_trail) { |
159 | ceph_pagelist_release(req->r_trail); | |
160 | kfree(req->r_trail); | |
161 | } | |
415e49a9 SW |
162 | if (req->r_mempool) |
163 | mempool_free(req, req->r_osdc->req_mempool); | |
164 | else | |
165 | kfree(req); | |
f24e9980 | 166 | } |
3d14c5d2 | 167 | EXPORT_SYMBOL(ceph_osdc_release_request); |
68b4476b YS |
168 | |
169 | static int get_num_ops(struct ceph_osd_req_op *ops, int *needs_trail) | |
170 | { | |
171 | int i = 0; | |
172 | ||
173 | if (needs_trail) | |
174 | *needs_trail = 0; | |
175 | while (ops[i].op) { | |
176 | if (needs_trail && op_needs_trail(ops[i].op)) | |
177 | *needs_trail = 1; | |
178 | i++; | |
179 | } | |
180 | ||
181 | return i; | |
182 | } | |
183 | ||
3499e8a5 YS |
184 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
185 | int flags, | |
f24e9980 | 186 | struct ceph_snap_context *snapc, |
68b4476b | 187 | struct ceph_osd_req_op *ops, |
3499e8a5 YS |
188 | bool use_mempool, |
189 | gfp_t gfp_flags, | |
68b4476b YS |
190 | struct page **pages, |
191 | struct bio *bio) | |
f24e9980 SW |
192 | { |
193 | struct ceph_osd_request *req; | |
194 | struct ceph_msg *msg; | |
68b4476b YS |
195 | int needs_trail; |
196 | int num_op = get_num_ops(ops, &needs_trail); | |
197 | size_t msg_size = sizeof(struct ceph_osd_request_head); | |
3499e8a5 | 198 | |
68b4476b | 199 | msg_size += num_op*sizeof(struct ceph_osd_op); |
f24e9980 SW |
200 | |
201 | if (use_mempool) { | |
3499e8a5 | 202 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
f24e9980 SW |
203 | memset(req, 0, sizeof(*req)); |
204 | } else { | |
3499e8a5 | 205 | req = kzalloc(sizeof(*req), gfp_flags); |
f24e9980 SW |
206 | } |
207 | if (req == NULL) | |
a79832f2 | 208 | return NULL; |
f24e9980 | 209 | |
f24e9980 SW |
210 | req->r_osdc = osdc; |
211 | req->r_mempool = use_mempool; | |
68b4476b | 212 | |
415e49a9 | 213 | kref_init(&req->r_kref); |
f24e9980 SW |
214 | init_completion(&req->r_completion); |
215 | init_completion(&req->r_safe_completion); | |
cd43045c | 216 | rb_init_node(&req->r_node); |
f24e9980 | 217 | INIT_LIST_HEAD(&req->r_unsafe_item); |
a40c4f10 YS |
218 | INIT_LIST_HEAD(&req->r_linger_item); |
219 | INIT_LIST_HEAD(&req->r_linger_osd); | |
935b639a | 220 | INIT_LIST_HEAD(&req->r_req_lru_item); |
cd43045c SW |
221 | INIT_LIST_HEAD(&req->r_osd_item); |
222 | ||
f24e9980 SW |
223 | req->r_flags = flags; |
224 | ||
225 | WARN_ON((flags & (CEPH_OSD_FLAG_READ|CEPH_OSD_FLAG_WRITE)) == 0); | |
226 | ||
c16e7869 SW |
227 | /* create reply message */ |
228 | if (use_mempool) | |
229 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
230 | else | |
231 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, | |
b61c2763 | 232 | OSD_OPREPLY_FRONT_LEN, gfp_flags, true); |
a79832f2 | 233 | if (!msg) { |
c16e7869 | 234 | ceph_osdc_put_request(req); |
a79832f2 | 235 | return NULL; |
c16e7869 SW |
236 | } |
237 | req->r_reply = msg; | |
238 | ||
68b4476b YS |
239 | /* allocate space for the trailing data */ |
240 | if (needs_trail) { | |
241 | req->r_trail = kmalloc(sizeof(struct ceph_pagelist), gfp_flags); | |
242 | if (!req->r_trail) { | |
243 | ceph_osdc_put_request(req); | |
244 | return NULL; | |
245 | } | |
246 | ceph_pagelist_init(req->r_trail); | |
247 | } | |
d50b409f | 248 | |
c16e7869 | 249 | /* create request message; allow space for oid */ |
224736d9 | 250 | msg_size += MAX_OBJ_NAME_SIZE; |
f24e9980 SW |
251 | if (snapc) |
252 | msg_size += sizeof(u64) * snapc->num_snaps; | |
253 | if (use_mempool) | |
8f3bc053 | 254 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 255 | else |
b61c2763 | 256 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); |
a79832f2 | 257 | if (!msg) { |
f24e9980 | 258 | ceph_osdc_put_request(req); |
a79832f2 | 259 | return NULL; |
f24e9980 | 260 | } |
68b4476b | 261 | |
f24e9980 | 262 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 YS |
263 | |
264 | req->r_request = msg; | |
265 | req->r_pages = pages; | |
68b4476b YS |
266 | #ifdef CONFIG_BLOCK |
267 | if (bio) { | |
268 | req->r_bio = bio; | |
269 | bio_get(req->r_bio); | |
270 | } | |
271 | #endif | |
3499e8a5 YS |
272 | |
273 | return req; | |
274 | } | |
3d14c5d2 | 275 | EXPORT_SYMBOL(ceph_osdc_alloc_request); |
3499e8a5 | 276 | |
68b4476b YS |
277 | static void osd_req_encode_op(struct ceph_osd_request *req, |
278 | struct ceph_osd_op *dst, | |
279 | struct ceph_osd_req_op *src) | |
280 | { | |
281 | dst->op = cpu_to_le16(src->op); | |
282 | ||
065a68f9 | 283 | switch (src->op) { |
68b4476b YS |
284 | case CEPH_OSD_OP_READ: |
285 | case CEPH_OSD_OP_WRITE: | |
286 | dst->extent.offset = | |
287 | cpu_to_le64(src->extent.offset); | |
288 | dst->extent.length = | |
289 | cpu_to_le64(src->extent.length); | |
290 | dst->extent.truncate_size = | |
291 | cpu_to_le64(src->extent.truncate_size); | |
292 | dst->extent.truncate_seq = | |
293 | cpu_to_le32(src->extent.truncate_seq); | |
294 | break; | |
295 | ||
296 | case CEPH_OSD_OP_GETXATTR: | |
297 | case CEPH_OSD_OP_SETXATTR: | |
298 | case CEPH_OSD_OP_CMPXATTR: | |
299 | BUG_ON(!req->r_trail); | |
300 | ||
301 | dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); | |
302 | dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); | |
303 | dst->xattr.cmp_op = src->xattr.cmp_op; | |
304 | dst->xattr.cmp_mode = src->xattr.cmp_mode; | |
305 | ceph_pagelist_append(req->r_trail, src->xattr.name, | |
306 | src->xattr.name_len); | |
307 | ceph_pagelist_append(req->r_trail, src->xattr.val, | |
308 | src->xattr.value_len); | |
309 | break; | |
ae1533b6 YS |
310 | case CEPH_OSD_OP_CALL: |
311 | BUG_ON(!req->r_trail); | |
312 | ||
313 | dst->cls.class_len = src->cls.class_len; | |
314 | dst->cls.method_len = src->cls.method_len; | |
315 | dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); | |
316 | ||
317 | ceph_pagelist_append(req->r_trail, src->cls.class_name, | |
318 | src->cls.class_len); | |
319 | ceph_pagelist_append(req->r_trail, src->cls.method_name, | |
320 | src->cls.method_len); | |
321 | ceph_pagelist_append(req->r_trail, src->cls.indata, | |
322 | src->cls.indata_len); | |
323 | break; | |
324 | case CEPH_OSD_OP_ROLLBACK: | |
325 | dst->snap.snapid = cpu_to_le64(src->snap.snapid); | |
326 | break; | |
68b4476b YS |
327 | case CEPH_OSD_OP_STARTSYNC: |
328 | break; | |
a40c4f10 YS |
329 | case CEPH_OSD_OP_NOTIFY: |
330 | { | |
331 | __le32 prot_ver = cpu_to_le32(src->watch.prot_ver); | |
332 | __le32 timeout = cpu_to_le32(src->watch.timeout); | |
333 | ||
334 | BUG_ON(!req->r_trail); | |
335 | ||
336 | ceph_pagelist_append(req->r_trail, | |
337 | &prot_ver, sizeof(prot_ver)); | |
338 | ceph_pagelist_append(req->r_trail, | |
339 | &timeout, sizeof(timeout)); | |
340 | } | |
341 | case CEPH_OSD_OP_NOTIFY_ACK: | |
342 | case CEPH_OSD_OP_WATCH: | |
343 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
344 | dst->watch.ver = cpu_to_le64(src->watch.ver); | |
345 | dst->watch.flag = src->watch.flag; | |
346 | break; | |
68b4476b YS |
347 | default: |
348 | pr_err("unrecognized osd opcode %d\n", dst->op); | |
349 | WARN_ON(1); | |
350 | break; | |
351 | } | |
352 | dst->payload_len = cpu_to_le32(src->payload_len); | |
353 | } | |
354 | ||
3499e8a5 YS |
355 | /* |
356 | * build new request AND message | |
357 | * | |
358 | */ | |
359 | void ceph_osdc_build_request(struct ceph_osd_request *req, | |
68b4476b YS |
360 | u64 off, u64 *plen, |
361 | struct ceph_osd_req_op *src_ops, | |
362 | struct ceph_snap_context *snapc, | |
363 | struct timespec *mtime, | |
364 | const char *oid, | |
365 | int oid_len) | |
3499e8a5 YS |
366 | { |
367 | struct ceph_msg *msg = req->r_request; | |
368 | struct ceph_osd_request_head *head; | |
68b4476b | 369 | struct ceph_osd_req_op *src_op; |
3499e8a5 YS |
370 | struct ceph_osd_op *op; |
371 | void *p; | |
68b4476b | 372 | int num_op = get_num_ops(src_ops, NULL); |
3499e8a5 | 373 | size_t msg_size = sizeof(*head) + num_op*sizeof(*op); |
3499e8a5 | 374 | int flags = req->r_flags; |
68b4476b YS |
375 | u64 data_len = 0; |
376 | int i; | |
3499e8a5 | 377 | |
f24e9980 SW |
378 | head = msg->front.iov_base; |
379 | op = (void *)(head + 1); | |
380 | p = (void *)(op + num_op); | |
381 | ||
f24e9980 SW |
382 | req->r_snapc = ceph_get_snap_context(snapc); |
383 | ||
384 | head->client_inc = cpu_to_le32(1); /* always, for now. */ | |
385 | head->flags = cpu_to_le32(flags); | |
386 | if (flags & CEPH_OSD_FLAG_WRITE) | |
387 | ceph_encode_timespec(&head->mtime, mtime); | |
388 | head->num_ops = cpu_to_le16(num_op); | |
f24e9980 | 389 | |
f24e9980 SW |
390 | |
391 | /* fill in oid */ | |
3499e8a5 YS |
392 | head->object_len = cpu_to_le32(oid_len); |
393 | memcpy(p, oid, oid_len); | |
394 | p += oid_len; | |
f24e9980 | 395 | |
68b4476b YS |
396 | src_op = src_ops; |
397 | while (src_op->op) { | |
398 | osd_req_encode_op(req, op, src_op); | |
399 | src_op++; | |
f24e9980 | 400 | op++; |
f24e9980 | 401 | } |
68b4476b YS |
402 | |
403 | if (req->r_trail) | |
404 | data_len += req->r_trail->length; | |
405 | ||
f24e9980 SW |
406 | if (snapc) { |
407 | head->snap_seq = cpu_to_le64(snapc->seq); | |
408 | head->num_snaps = cpu_to_le32(snapc->num_snaps); | |
409 | for (i = 0; i < snapc->num_snaps; i++) { | |
410 | put_unaligned_le64(snapc->snaps[i], p); | |
411 | p += sizeof(u64); | |
412 | } | |
413 | } | |
414 | ||
68b4476b YS |
415 | if (flags & CEPH_OSD_FLAG_WRITE) { |
416 | req->r_request->hdr.data_off = cpu_to_le16(off); | |
417 | req->r_request->hdr.data_len = cpu_to_le32(*plen + data_len); | |
418 | } else if (data_len) { | |
419 | req->r_request->hdr.data_off = 0; | |
420 | req->r_request->hdr.data_len = cpu_to_le32(data_len); | |
421 | } | |
422 | ||
c5c6b19d SW |
423 | req->r_request->page_alignment = req->r_page_alignment; |
424 | ||
f24e9980 | 425 | BUG_ON(p > msg->front.iov_base + msg->front.iov_len); |
6f863e71 SW |
426 | msg_size = p - msg->front.iov_base; |
427 | msg->front.iov_len = msg_size; | |
428 | msg->hdr.front_len = cpu_to_le32(msg_size); | |
3499e8a5 YS |
429 | return; |
430 | } | |
3d14c5d2 | 431 | EXPORT_SYMBOL(ceph_osdc_build_request); |
3499e8a5 YS |
432 | |
433 | /* | |
434 | * build new request AND message, calculate layout, and adjust file | |
435 | * extent as needed. | |
436 | * | |
437 | * if the file was recently truncated, we include information about its | |
438 | * old and new size so that the object can be updated appropriately. (we | |
439 | * avoid synchronously deleting truncated objects because it's slow.) | |
440 | * | |
441 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
442 | * data quickly. | |
443 | */ | |
444 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
445 | struct ceph_file_layout *layout, | |
446 | struct ceph_vino vino, | |
447 | u64 off, u64 *plen, | |
448 | int opcode, int flags, | |
449 | struct ceph_snap_context *snapc, | |
450 | int do_sync, | |
451 | u32 truncate_seq, | |
452 | u64 truncate_size, | |
453 | struct timespec *mtime, | |
b7495fc2 SW |
454 | bool use_mempool, int num_reply, |
455 | int page_align) | |
3499e8a5 | 456 | { |
68b4476b YS |
457 | struct ceph_osd_req_op ops[3]; |
458 | struct ceph_osd_request *req; | |
459 | ||
460 | ops[0].op = opcode; | |
461 | ops[0].extent.truncate_seq = truncate_seq; | |
462 | ops[0].extent.truncate_size = truncate_size; | |
463 | ops[0].payload_len = 0; | |
464 | ||
465 | if (do_sync) { | |
466 | ops[1].op = CEPH_OSD_OP_STARTSYNC; | |
467 | ops[1].payload_len = 0; | |
468 | ops[2].op = 0; | |
469 | } else | |
470 | ops[1].op = 0; | |
471 | ||
472 | req = ceph_osdc_alloc_request(osdc, flags, | |
473 | snapc, ops, | |
3499e8a5 | 474 | use_mempool, |
68b4476b | 475 | GFP_NOFS, NULL, NULL); |
4ad12621 SW |
476 | if (!req) |
477 | return NULL; | |
3499e8a5 YS |
478 | |
479 | /* calculate max write size */ | |
68b4476b | 480 | calc_layout(osdc, vino, layout, off, plen, req, ops); |
3499e8a5 YS |
481 | req->r_file_layout = *layout; /* keep a copy */ |
482 | ||
9bb0ce2b SW |
483 | /* in case it differs from natural (file) alignment that |
484 | calc_layout filled in for us */ | |
485 | req->r_num_pages = calc_pages_for(page_align, *plen); | |
b7495fc2 SW |
486 | req->r_page_alignment = page_align; |
487 | ||
68b4476b YS |
488 | ceph_osdc_build_request(req, off, plen, ops, |
489 | snapc, | |
3499e8a5 YS |
490 | mtime, |
491 | req->r_oid, req->r_oid_len); | |
492 | ||
f24e9980 SW |
493 | return req; |
494 | } | |
3d14c5d2 | 495 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
496 | |
497 | /* | |
498 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
499 | */ | |
500 | static void __insert_request(struct ceph_osd_client *osdc, | |
501 | struct ceph_osd_request *new) | |
502 | { | |
503 | struct rb_node **p = &osdc->requests.rb_node; | |
504 | struct rb_node *parent = NULL; | |
505 | struct ceph_osd_request *req = NULL; | |
506 | ||
507 | while (*p) { | |
508 | parent = *p; | |
509 | req = rb_entry(parent, struct ceph_osd_request, r_node); | |
510 | if (new->r_tid < req->r_tid) | |
511 | p = &(*p)->rb_left; | |
512 | else if (new->r_tid > req->r_tid) | |
513 | p = &(*p)->rb_right; | |
514 | else | |
515 | BUG(); | |
516 | } | |
517 | ||
518 | rb_link_node(&new->r_node, parent, p); | |
519 | rb_insert_color(&new->r_node, &osdc->requests); | |
520 | } | |
521 | ||
522 | static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, | |
523 | u64 tid) | |
524 | { | |
525 | struct ceph_osd_request *req; | |
526 | struct rb_node *n = osdc->requests.rb_node; | |
527 | ||
528 | while (n) { | |
529 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
530 | if (tid < req->r_tid) | |
531 | n = n->rb_left; | |
532 | else if (tid > req->r_tid) | |
533 | n = n->rb_right; | |
534 | else | |
535 | return req; | |
536 | } | |
537 | return NULL; | |
538 | } | |
539 | ||
540 | static struct ceph_osd_request * | |
541 | __lookup_request_ge(struct ceph_osd_client *osdc, | |
542 | u64 tid) | |
543 | { | |
544 | struct ceph_osd_request *req; | |
545 | struct rb_node *n = osdc->requests.rb_node; | |
546 | ||
547 | while (n) { | |
548 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
549 | if (tid < req->r_tid) { | |
550 | if (!n->rb_left) | |
551 | return req; | |
552 | n = n->rb_left; | |
553 | } else if (tid > req->r_tid) { | |
554 | n = n->rb_right; | |
555 | } else { | |
556 | return req; | |
557 | } | |
558 | } | |
559 | return NULL; | |
560 | } | |
561 | ||
6f6c7006 SW |
562 | /* |
563 | * Resubmit requests pending on the given osd. | |
564 | */ | |
565 | static void __kick_osd_requests(struct ceph_osd_client *osdc, | |
566 | struct ceph_osd *osd) | |
567 | { | |
a40c4f10 | 568 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
569 | int err; |
570 | ||
571 | dout("__kick_osd_requests osd%d\n", osd->o_osd); | |
572 | err = __reset_osd(osdc, osd); | |
573 | if (err == -EAGAIN) | |
574 | return; | |
575 | ||
576 | list_for_each_entry(req, &osd->o_requests, r_osd_item) { | |
577 | list_move(&req->r_req_lru_item, &osdc->req_unsent); | |
578 | dout("requeued %p tid %llu osd%d\n", req, req->r_tid, | |
579 | osd->o_osd); | |
a40c4f10 YS |
580 | if (!req->r_linger) |
581 | req->r_flags |= CEPH_OSD_FLAG_RETRY; | |
582 | } | |
583 | ||
584 | list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, | |
585 | r_linger_osd) { | |
77f38e0e SW |
586 | /* |
587 | * reregister request prior to unregistering linger so | |
588 | * that r_osd is preserved. | |
589 | */ | |
590 | BUG_ON(!list_empty(&req->r_req_lru_item)); | |
a40c4f10 | 591 | __register_request(osdc, req); |
77f38e0e SW |
592 | list_add(&req->r_req_lru_item, &osdc->req_unsent); |
593 | list_add(&req->r_osd_item, &req->r_osd->o_requests); | |
594 | __unregister_linger_request(osdc, req); | |
a40c4f10 YS |
595 | dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, |
596 | osd->o_osd); | |
6f6c7006 SW |
597 | } |
598 | } | |
599 | ||
600 | static void kick_osd_requests(struct ceph_osd_client *osdc, | |
601 | struct ceph_osd *kickosd) | |
602 | { | |
603 | mutex_lock(&osdc->request_mutex); | |
604 | __kick_osd_requests(osdc, kickosd); | |
605 | mutex_unlock(&osdc->request_mutex); | |
606 | } | |
f24e9980 SW |
607 | |
608 | /* | |
81b024e7 | 609 | * If the osd connection drops, we need to resubmit all requests. |
f24e9980 SW |
610 | */ |
611 | static void osd_reset(struct ceph_connection *con) | |
612 | { | |
613 | struct ceph_osd *osd = con->private; | |
614 | struct ceph_osd_client *osdc; | |
615 | ||
616 | if (!osd) | |
617 | return; | |
618 | dout("osd_reset osd%d\n", osd->o_osd); | |
619 | osdc = osd->o_osdc; | |
f24e9980 | 620 | down_read(&osdc->map_sem); |
6f6c7006 SW |
621 | kick_osd_requests(osdc, osd); |
622 | send_queued(osdc); | |
f24e9980 SW |
623 | up_read(&osdc->map_sem); |
624 | } | |
625 | ||
626 | /* | |
627 | * Track open sessions with osds. | |
628 | */ | |
e10006f8 | 629 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
630 | { |
631 | struct ceph_osd *osd; | |
632 | ||
633 | osd = kzalloc(sizeof(*osd), GFP_NOFS); | |
634 | if (!osd) | |
635 | return NULL; | |
636 | ||
637 | atomic_set(&osd->o_ref, 1); | |
638 | osd->o_osdc = osdc; | |
e10006f8 | 639 | osd->o_osd = onum; |
f24e9980 | 640 | INIT_LIST_HEAD(&osd->o_requests); |
a40c4f10 | 641 | INIT_LIST_HEAD(&osd->o_linger_requests); |
f5a2041b | 642 | INIT_LIST_HEAD(&osd->o_osd_lru); |
f24e9980 SW |
643 | osd->o_incarnation = 1; |
644 | ||
b7a9e5dd | 645 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 646 | |
422d2cb8 | 647 | INIT_LIST_HEAD(&osd->o_keepalive_item); |
f24e9980 SW |
648 | return osd; |
649 | } | |
650 | ||
651 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
652 | { | |
653 | if (atomic_inc_not_zero(&osd->o_ref)) { | |
654 | dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, | |
655 | atomic_read(&osd->o_ref)); | |
656 | return osd; | |
657 | } else { | |
658 | dout("get_osd %p FAIL\n", osd); | |
659 | return NULL; | |
660 | } | |
661 | } | |
662 | ||
663 | static void put_osd(struct ceph_osd *osd) | |
664 | { | |
665 | dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), | |
666 | atomic_read(&osd->o_ref) - 1); | |
a255651d | 667 | if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { |
79494d1b SW |
668 | struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; |
669 | ||
a255651d | 670 | if (ac->ops && ac->ops->destroy_authorizer) |
6c4a1915 | 671 | ac->ops->destroy_authorizer(ac, osd->o_auth.authorizer); |
f24e9980 | 672 | kfree(osd); |
79494d1b | 673 | } |
f24e9980 SW |
674 | } |
675 | ||
676 | /* | |
677 | * remove an osd from our map | |
678 | */ | |
f5a2041b | 679 | static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 680 | { |
f5a2041b | 681 | dout("__remove_osd %p\n", osd); |
f24e9980 SW |
682 | BUG_ON(!list_empty(&osd->o_requests)); |
683 | rb_erase(&osd->o_node, &osdc->osds); | |
f5a2041b | 684 | list_del_init(&osd->o_osd_lru); |
f24e9980 SW |
685 | ceph_con_close(&osd->o_con); |
686 | put_osd(osd); | |
687 | } | |
688 | ||
aca420bc SW |
689 | static void remove_all_osds(struct ceph_osd_client *osdc) |
690 | { | |
691 | dout("__remove_old_osds %p\n", osdc); | |
692 | mutex_lock(&osdc->request_mutex); | |
693 | while (!RB_EMPTY_ROOT(&osdc->osds)) { | |
694 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
695 | struct ceph_osd, o_node); | |
696 | __remove_osd(osdc, osd); | |
697 | } | |
698 | mutex_unlock(&osdc->request_mutex); | |
699 | } | |
700 | ||
f5a2041b YS |
701 | static void __move_osd_to_lru(struct ceph_osd_client *osdc, |
702 | struct ceph_osd *osd) | |
703 | { | |
704 | dout("__move_osd_to_lru %p\n", osd); | |
705 | BUG_ON(!list_empty(&osd->o_osd_lru)); | |
706 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); | |
3d14c5d2 | 707 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; |
f5a2041b YS |
708 | } |
709 | ||
710 | static void __remove_osd_from_lru(struct ceph_osd *osd) | |
711 | { | |
712 | dout("__remove_osd_from_lru %p\n", osd); | |
713 | if (!list_empty(&osd->o_osd_lru)) | |
714 | list_del_init(&osd->o_osd_lru); | |
715 | } | |
716 | ||
aca420bc | 717 | static void remove_old_osds(struct ceph_osd_client *osdc) |
f5a2041b YS |
718 | { |
719 | struct ceph_osd *osd, *nosd; | |
720 | ||
721 | dout("__remove_old_osds %p\n", osdc); | |
722 | mutex_lock(&osdc->request_mutex); | |
723 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { | |
aca420bc | 724 | if (time_before(jiffies, osd->lru_ttl)) |
f5a2041b YS |
725 | break; |
726 | __remove_osd(osdc, osd); | |
727 | } | |
728 | mutex_unlock(&osdc->request_mutex); | |
729 | } | |
730 | ||
f24e9980 SW |
731 | /* |
732 | * reset osd connect | |
733 | */ | |
f5a2041b | 734 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 735 | { |
87b315a5 | 736 | struct ceph_osd_request *req; |
f24e9980 SW |
737 | int ret = 0; |
738 | ||
f5a2041b | 739 | dout("__reset_osd %p osd%d\n", osd, osd->o_osd); |
a40c4f10 YS |
740 | if (list_empty(&osd->o_requests) && |
741 | list_empty(&osd->o_linger_requests)) { | |
f5a2041b | 742 | __remove_osd(osdc, osd); |
87b315a5 SW |
743 | } else if (memcmp(&osdc->osdmap->osd_addr[osd->o_osd], |
744 | &osd->o_con.peer_addr, | |
745 | sizeof(osd->o_con.peer_addr)) == 0 && | |
746 | !ceph_con_opened(&osd->o_con)) { | |
747 | dout(" osd addr hasn't changed and connection never opened," | |
748 | " letting msgr retry"); | |
749 | /* touch each r_stamp for handle_timeout()'s benfit */ | |
750 | list_for_each_entry(req, &osd->o_requests, r_osd_item) | |
751 | req->r_stamp = jiffies; | |
752 | ret = -EAGAIN; | |
f24e9980 SW |
753 | } else { |
754 | ceph_con_close(&osd->o_con); | |
b7a9e5dd SW |
755 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, |
756 | &osdc->osdmap->osd_addr[osd->o_osd]); | |
f24e9980 SW |
757 | osd->o_incarnation++; |
758 | } | |
759 | return ret; | |
760 | } | |
761 | ||
762 | static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) | |
763 | { | |
764 | struct rb_node **p = &osdc->osds.rb_node; | |
765 | struct rb_node *parent = NULL; | |
766 | struct ceph_osd *osd = NULL; | |
767 | ||
aca420bc | 768 | dout("__insert_osd %p osd%d\n", new, new->o_osd); |
f24e9980 SW |
769 | while (*p) { |
770 | parent = *p; | |
771 | osd = rb_entry(parent, struct ceph_osd, o_node); | |
772 | if (new->o_osd < osd->o_osd) | |
773 | p = &(*p)->rb_left; | |
774 | else if (new->o_osd > osd->o_osd) | |
775 | p = &(*p)->rb_right; | |
776 | else | |
777 | BUG(); | |
778 | } | |
779 | ||
780 | rb_link_node(&new->o_node, parent, p); | |
781 | rb_insert_color(&new->o_node, &osdc->osds); | |
782 | } | |
783 | ||
784 | static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) | |
785 | { | |
786 | struct ceph_osd *osd; | |
787 | struct rb_node *n = osdc->osds.rb_node; | |
788 | ||
789 | while (n) { | |
790 | osd = rb_entry(n, struct ceph_osd, o_node); | |
791 | if (o < osd->o_osd) | |
792 | n = n->rb_left; | |
793 | else if (o > osd->o_osd) | |
794 | n = n->rb_right; | |
795 | else | |
796 | return osd; | |
797 | } | |
798 | return NULL; | |
799 | } | |
800 | ||
422d2cb8 YS |
801 | static void __schedule_osd_timeout(struct ceph_osd_client *osdc) |
802 | { | |
803 | schedule_delayed_work(&osdc->timeout_work, | |
3d14c5d2 | 804 | osdc->client->options->osd_keepalive_timeout * HZ); |
422d2cb8 YS |
805 | } |
806 | ||
807 | static void __cancel_osd_timeout(struct ceph_osd_client *osdc) | |
808 | { | |
809 | cancel_delayed_work(&osdc->timeout_work); | |
810 | } | |
f24e9980 SW |
811 | |
812 | /* | |
813 | * Register request, assign tid. If this is the first request, set up | |
814 | * the timeout event. | |
815 | */ | |
a40c4f10 YS |
816 | static void __register_request(struct ceph_osd_client *osdc, |
817 | struct ceph_osd_request *req) | |
f24e9980 | 818 | { |
f24e9980 | 819 | req->r_tid = ++osdc->last_tid; |
6df058c0 | 820 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); |
77f38e0e | 821 | dout("__register_request %p tid %lld\n", req, req->r_tid); |
f24e9980 SW |
822 | __insert_request(osdc, req); |
823 | ceph_osdc_get_request(req); | |
824 | osdc->num_requests++; | |
f24e9980 | 825 | if (osdc->num_requests == 1) { |
422d2cb8 YS |
826 | dout(" first request, scheduling timeout\n"); |
827 | __schedule_osd_timeout(osdc); | |
f24e9980 | 828 | } |
a40c4f10 YS |
829 | } |
830 | ||
831 | static void register_request(struct ceph_osd_client *osdc, | |
832 | struct ceph_osd_request *req) | |
833 | { | |
834 | mutex_lock(&osdc->request_mutex); | |
835 | __register_request(osdc, req); | |
f24e9980 SW |
836 | mutex_unlock(&osdc->request_mutex); |
837 | } | |
838 | ||
839 | /* | |
840 | * called under osdc->request_mutex | |
841 | */ | |
842 | static void __unregister_request(struct ceph_osd_client *osdc, | |
843 | struct ceph_osd_request *req) | |
844 | { | |
35f9f8a0 SW |
845 | if (RB_EMPTY_NODE(&req->r_node)) { |
846 | dout("__unregister_request %p tid %lld not registered\n", | |
847 | req, req->r_tid); | |
848 | return; | |
849 | } | |
850 | ||
f24e9980 SW |
851 | dout("__unregister_request %p tid %lld\n", req, req->r_tid); |
852 | rb_erase(&req->r_node, &osdc->requests); | |
853 | osdc->num_requests--; | |
854 | ||
0ba6478d SW |
855 | if (req->r_osd) { |
856 | /* make sure the original request isn't in flight. */ | |
6740a845 | 857 | ceph_msg_revoke(req->r_request); |
0ba6478d SW |
858 | |
859 | list_del_init(&req->r_osd_item); | |
a40c4f10 YS |
860 | if (list_empty(&req->r_osd->o_requests) && |
861 | list_empty(&req->r_osd->o_linger_requests)) { | |
862 | dout("moving osd to %p lru\n", req->r_osd); | |
f5a2041b | 863 | __move_osd_to_lru(osdc, req->r_osd); |
a40c4f10 | 864 | } |
fbdb9190 | 865 | if (list_empty(&req->r_linger_item)) |
a40c4f10 | 866 | req->r_osd = NULL; |
0ba6478d | 867 | } |
f24e9980 SW |
868 | |
869 | ceph_osdc_put_request(req); | |
870 | ||
422d2cb8 YS |
871 | list_del_init(&req->r_req_lru_item); |
872 | if (osdc->num_requests == 0) { | |
873 | dout(" no requests, canceling timeout\n"); | |
874 | __cancel_osd_timeout(osdc); | |
f24e9980 SW |
875 | } |
876 | } | |
877 | ||
878 | /* | |
879 | * Cancel a previously queued request message | |
880 | */ | |
881 | static void __cancel_request(struct ceph_osd_request *req) | |
882 | { | |
6bc18876 | 883 | if (req->r_sent && req->r_osd) { |
6740a845 | 884 | ceph_msg_revoke(req->r_request); |
f24e9980 SW |
885 | req->r_sent = 0; |
886 | } | |
887 | } | |
888 | ||
a40c4f10 YS |
889 | static void __register_linger_request(struct ceph_osd_client *osdc, |
890 | struct ceph_osd_request *req) | |
891 | { | |
892 | dout("__register_linger_request %p\n", req); | |
893 | list_add_tail(&req->r_linger_item, &osdc->req_linger); | |
6194ea89 SW |
894 | if (req->r_osd) |
895 | list_add_tail(&req->r_linger_osd, | |
896 | &req->r_osd->o_linger_requests); | |
a40c4f10 YS |
897 | } |
898 | ||
899 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
900 | struct ceph_osd_request *req) | |
901 | { | |
902 | dout("__unregister_linger_request %p\n", req); | |
903 | if (req->r_osd) { | |
904 | list_del_init(&req->r_linger_item); | |
905 | list_del_init(&req->r_linger_osd); | |
906 | ||
907 | if (list_empty(&req->r_osd->o_requests) && | |
908 | list_empty(&req->r_osd->o_linger_requests)) { | |
909 | dout("moving osd to %p lru\n", req->r_osd); | |
910 | __move_osd_to_lru(osdc, req->r_osd); | |
911 | } | |
fbdb9190 SW |
912 | if (list_empty(&req->r_osd_item)) |
913 | req->r_osd = NULL; | |
a40c4f10 YS |
914 | } |
915 | } | |
916 | ||
917 | void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, | |
918 | struct ceph_osd_request *req) | |
919 | { | |
920 | mutex_lock(&osdc->request_mutex); | |
921 | if (req->r_linger) { | |
922 | __unregister_linger_request(osdc, req); | |
923 | ceph_osdc_put_request(req); | |
924 | } | |
925 | mutex_unlock(&osdc->request_mutex); | |
926 | } | |
927 | EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); | |
928 | ||
929 | void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, | |
930 | struct ceph_osd_request *req) | |
931 | { | |
932 | if (!req->r_linger) { | |
933 | dout("set_request_linger %p\n", req); | |
934 | req->r_linger = 1; | |
935 | /* | |
936 | * caller is now responsible for calling | |
937 | * unregister_linger_request | |
938 | */ | |
939 | ceph_osdc_get_request(req); | |
940 | } | |
941 | } | |
942 | EXPORT_SYMBOL(ceph_osdc_set_request_linger); | |
943 | ||
f24e9980 SW |
944 | /* |
945 | * Pick an osd (the first 'up' osd in the pg), allocate the osd struct | |
946 | * (as needed), and set the request r_osd appropriately. If there is | |
25985edc | 947 | * no up osd, set r_osd to NULL. Move the request to the appropriate list |
6f6c7006 | 948 | * (unsent, homeless) or leave on in-flight lru. |
f24e9980 SW |
949 | * |
950 | * Return 0 if unchanged, 1 if changed, or negative on error. | |
951 | * | |
952 | * Caller should hold map_sem for read and request_mutex. | |
953 | */ | |
6f6c7006 | 954 | static int __map_request(struct ceph_osd_client *osdc, |
38d6453c | 955 | struct ceph_osd_request *req, int force_resend) |
f24e9980 SW |
956 | { |
957 | struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base; | |
51042122 | 958 | struct ceph_pg pgid; |
d85b7056 SW |
959 | int acting[CEPH_PG_MAX_SIZE]; |
960 | int o = -1, num = 0; | |
f24e9980 | 961 | int err; |
f24e9980 | 962 | |
6f6c7006 | 963 | dout("map_request %p tid %lld\n", req, req->r_tid); |
f24e9980 SW |
964 | err = ceph_calc_object_layout(&reqhead->layout, req->r_oid, |
965 | &req->r_file_layout, osdc->osdmap); | |
6f6c7006 SW |
966 | if (err) { |
967 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f24e9980 | 968 | return err; |
6f6c7006 | 969 | } |
51042122 | 970 | pgid = reqhead->layout.ol_pgid; |
7740a42f SW |
971 | req->r_pgid = pgid; |
972 | ||
d85b7056 SW |
973 | err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); |
974 | if (err > 0) { | |
975 | o = acting[0]; | |
976 | num = err; | |
977 | } | |
f24e9980 | 978 | |
38d6453c SW |
979 | if ((!force_resend && |
980 | req->r_osd && req->r_osd->o_osd == o && | |
d85b7056 SW |
981 | req->r_sent >= req->r_osd->o_incarnation && |
982 | req->r_num_pg_osds == num && | |
983 | memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || | |
f24e9980 SW |
984 | (req->r_osd == NULL && o == -1)) |
985 | return 0; /* no change */ | |
986 | ||
6f6c7006 | 987 | dout("map_request tid %llu pgid %d.%x osd%d (was osd%d)\n", |
51042122 | 988 | req->r_tid, le32_to_cpu(pgid.pool), le16_to_cpu(pgid.ps), o, |
f24e9980 SW |
989 | req->r_osd ? req->r_osd->o_osd : -1); |
990 | ||
d85b7056 SW |
991 | /* record full pg acting set */ |
992 | memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); | |
993 | req->r_num_pg_osds = num; | |
994 | ||
f24e9980 SW |
995 | if (req->r_osd) { |
996 | __cancel_request(req); | |
997 | list_del_init(&req->r_osd_item); | |
f24e9980 SW |
998 | req->r_osd = NULL; |
999 | } | |
1000 | ||
1001 | req->r_osd = __lookup_osd(osdc, o); | |
1002 | if (!req->r_osd && o >= 0) { | |
c99eb1c7 | 1003 | err = -ENOMEM; |
e10006f8 | 1004 | req->r_osd = create_osd(osdc, o); |
6f6c7006 SW |
1005 | if (!req->r_osd) { |
1006 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
c99eb1c7 | 1007 | goto out; |
6f6c7006 | 1008 | } |
f24e9980 | 1009 | |
6f6c7006 | 1010 | dout("map_request osd %p is osd%d\n", req->r_osd, o); |
f24e9980 SW |
1011 | __insert_osd(osdc, req->r_osd); |
1012 | ||
b7a9e5dd SW |
1013 | ceph_con_open(&req->r_osd->o_con, |
1014 | CEPH_ENTITY_TYPE_OSD, o, | |
1015 | &osdc->osdmap->osd_addr[o]); | |
f24e9980 SW |
1016 | } |
1017 | ||
f5a2041b YS |
1018 | if (req->r_osd) { |
1019 | __remove_osd_from_lru(req->r_osd); | |
f24e9980 | 1020 | list_add(&req->r_osd_item, &req->r_osd->o_requests); |
6f6c7006 SW |
1021 | list_move(&req->r_req_lru_item, &osdc->req_unsent); |
1022 | } else { | |
1023 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f5a2041b | 1024 | } |
d85b7056 | 1025 | err = 1; /* osd or pg changed */ |
f24e9980 SW |
1026 | |
1027 | out: | |
f24e9980 SW |
1028 | return err; |
1029 | } | |
1030 | ||
1031 | /* | |
1032 | * caller should hold map_sem (for read) and request_mutex | |
1033 | */ | |
56e925b6 SW |
1034 | static void __send_request(struct ceph_osd_client *osdc, |
1035 | struct ceph_osd_request *req) | |
f24e9980 SW |
1036 | { |
1037 | struct ceph_osd_request_head *reqhead; | |
f24e9980 SW |
1038 | |
1039 | dout("send_request %p tid %llu to osd%d flags %d\n", | |
1040 | req, req->r_tid, req->r_osd->o_osd, req->r_flags); | |
1041 | ||
1042 | reqhead = req->r_request->front.iov_base; | |
1043 | reqhead->osdmap_epoch = cpu_to_le32(osdc->osdmap->epoch); | |
1044 | reqhead->flags |= cpu_to_le32(req->r_flags); /* e.g., RETRY */ | |
1045 | reqhead->reassert_version = req->r_reassert_version; | |
1046 | ||
3dd72fc0 | 1047 | req->r_stamp = jiffies; |
07a27e22 | 1048 | list_move_tail(&req->r_req_lru_item, &osdc->req_lru); |
f24e9980 SW |
1049 | |
1050 | ceph_msg_get(req->r_request); /* send consumes a ref */ | |
1051 | ceph_con_send(&req->r_osd->o_con, req->r_request); | |
1052 | req->r_sent = req->r_osd->o_incarnation; | |
f24e9980 SW |
1053 | } |
1054 | ||
6f6c7006 SW |
1055 | /* |
1056 | * Send any requests in the queue (req_unsent). | |
1057 | */ | |
1058 | static void send_queued(struct ceph_osd_client *osdc) | |
1059 | { | |
1060 | struct ceph_osd_request *req, *tmp; | |
1061 | ||
1062 | dout("send_queued\n"); | |
1063 | mutex_lock(&osdc->request_mutex); | |
1064 | list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) { | |
1065 | __send_request(osdc, req); | |
1066 | } | |
1067 | mutex_unlock(&osdc->request_mutex); | |
1068 | } | |
1069 | ||
f24e9980 SW |
1070 | /* |
1071 | * Timeout callback, called every N seconds when 1 or more osd | |
1072 | * requests has been active for more than N seconds. When this | |
1073 | * happens, we ping all OSDs with requests who have timed out to | |
1074 | * ensure any communications channel reset is detected. Reset the | |
1075 | * request timeouts another N seconds in the future as we go. | |
1076 | * Reschedule the timeout event another N seconds in future (unless | |
1077 | * there are no open requests). | |
1078 | */ | |
1079 | static void handle_timeout(struct work_struct *work) | |
1080 | { | |
1081 | struct ceph_osd_client *osdc = | |
1082 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
422d2cb8 | 1083 | struct ceph_osd_request *req, *last_req = NULL; |
f24e9980 | 1084 | struct ceph_osd *osd; |
3d14c5d2 | 1085 | unsigned long timeout = osdc->client->options->osd_timeout * HZ; |
422d2cb8 | 1086 | unsigned long keepalive = |
3d14c5d2 | 1087 | osdc->client->options->osd_keepalive_timeout * HZ; |
3dd72fc0 | 1088 | unsigned long last_stamp = 0; |
422d2cb8 | 1089 | struct list_head slow_osds; |
f24e9980 SW |
1090 | dout("timeout\n"); |
1091 | down_read(&osdc->map_sem); | |
1092 | ||
1093 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1094 | ||
1095 | mutex_lock(&osdc->request_mutex); | |
f24e9980 | 1096 | |
422d2cb8 YS |
1097 | /* |
1098 | * reset osds that appear to be _really_ unresponsive. this | |
1099 | * is a failsafe measure.. we really shouldn't be getting to | |
1100 | * this point if the system is working properly. the monitors | |
1101 | * should mark the osd as failed and we should find out about | |
1102 | * it from an updated osd map. | |
1103 | */ | |
f26e681d | 1104 | while (timeout && !list_empty(&osdc->req_lru)) { |
422d2cb8 YS |
1105 | req = list_entry(osdc->req_lru.next, struct ceph_osd_request, |
1106 | r_req_lru_item); | |
1107 | ||
4cf9d544 | 1108 | /* hasn't been long enough since we sent it? */ |
3dd72fc0 | 1109 | if (time_before(jiffies, req->r_stamp + timeout)) |
422d2cb8 | 1110 | break; |
4cf9d544 SW |
1111 | |
1112 | /* hasn't been long enough since it was acked? */ | |
1113 | if (req->r_request->ack_stamp == 0 || | |
1114 | time_before(jiffies, req->r_request->ack_stamp + timeout)) | |
1115 | break; | |
422d2cb8 | 1116 | |
3dd72fc0 | 1117 | BUG_ON(req == last_req && req->r_stamp == last_stamp); |
422d2cb8 | 1118 | last_req = req; |
3dd72fc0 | 1119 | last_stamp = req->r_stamp; |
422d2cb8 YS |
1120 | |
1121 | osd = req->r_osd; | |
1122 | BUG_ON(!osd); | |
1123 | pr_warning(" tid %llu timed out on osd%d, will reset osd\n", | |
1124 | req->r_tid, osd->o_osd); | |
6f6c7006 | 1125 | __kick_osd_requests(osdc, osd); |
422d2cb8 YS |
1126 | } |
1127 | ||
1128 | /* | |
1129 | * ping osds that are a bit slow. this ensures that if there | |
1130 | * is a break in the TCP connection we will notice, and reopen | |
1131 | * a connection with that osd (from the fault callback). | |
1132 | */ | |
1133 | INIT_LIST_HEAD(&slow_osds); | |
1134 | list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { | |
3dd72fc0 | 1135 | if (time_before(jiffies, req->r_stamp + keepalive)) |
422d2cb8 YS |
1136 | break; |
1137 | ||
1138 | osd = req->r_osd; | |
1139 | BUG_ON(!osd); | |
1140 | dout(" tid %llu is slow, will send keepalive on osd%d\n", | |
f24e9980 | 1141 | req->r_tid, osd->o_osd); |
422d2cb8 YS |
1142 | list_move_tail(&osd->o_keepalive_item, &slow_osds); |
1143 | } | |
1144 | while (!list_empty(&slow_osds)) { | |
1145 | osd = list_entry(slow_osds.next, struct ceph_osd, | |
1146 | o_keepalive_item); | |
1147 | list_del_init(&osd->o_keepalive_item); | |
f24e9980 SW |
1148 | ceph_con_keepalive(&osd->o_con); |
1149 | } | |
1150 | ||
422d2cb8 | 1151 | __schedule_osd_timeout(osdc); |
f24e9980 | 1152 | mutex_unlock(&osdc->request_mutex); |
6f6c7006 | 1153 | send_queued(osdc); |
f24e9980 SW |
1154 | up_read(&osdc->map_sem); |
1155 | } | |
1156 | ||
f5a2041b YS |
1157 | static void handle_osds_timeout(struct work_struct *work) |
1158 | { | |
1159 | struct ceph_osd_client *osdc = | |
1160 | container_of(work, struct ceph_osd_client, | |
1161 | osds_timeout_work.work); | |
1162 | unsigned long delay = | |
3d14c5d2 | 1163 | osdc->client->options->osd_idle_ttl * HZ >> 2; |
f5a2041b YS |
1164 | |
1165 | dout("osds timeout\n"); | |
1166 | down_read(&osdc->map_sem); | |
aca420bc | 1167 | remove_old_osds(osdc); |
f5a2041b YS |
1168 | up_read(&osdc->map_sem); |
1169 | ||
1170 | schedule_delayed_work(&osdc->osds_timeout_work, | |
1171 | round_jiffies_relative(delay)); | |
1172 | } | |
1173 | ||
25845472 SW |
1174 | static void complete_request(struct ceph_osd_request *req) |
1175 | { | |
1176 | if (req->r_safe_callback) | |
1177 | req->r_safe_callback(req, NULL); | |
1178 | complete_all(&req->r_safe_completion); /* fsync waiter */ | |
1179 | } | |
1180 | ||
f24e9980 SW |
1181 | /* |
1182 | * handle osd op reply. either call the callback if it is specified, | |
1183 | * or do the completion to wake up the waiting thread. | |
1184 | */ | |
350b1c32 SW |
1185 | static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, |
1186 | struct ceph_connection *con) | |
f24e9980 SW |
1187 | { |
1188 | struct ceph_osd_reply_head *rhead = msg->front.iov_base; | |
1189 | struct ceph_osd_request *req; | |
1190 | u64 tid; | |
1191 | int numops, object_len, flags; | |
0ceed5db | 1192 | s32 result; |
f24e9980 | 1193 | |
6df058c0 | 1194 | tid = le64_to_cpu(msg->hdr.tid); |
f24e9980 SW |
1195 | if (msg->front.iov_len < sizeof(*rhead)) |
1196 | goto bad; | |
f24e9980 SW |
1197 | numops = le32_to_cpu(rhead->num_ops); |
1198 | object_len = le32_to_cpu(rhead->object_len); | |
0ceed5db | 1199 | result = le32_to_cpu(rhead->result); |
f24e9980 SW |
1200 | if (msg->front.iov_len != sizeof(*rhead) + object_len + |
1201 | numops * sizeof(struct ceph_osd_op)) | |
1202 | goto bad; | |
0ceed5db | 1203 | dout("handle_reply %p tid %llu result %d\n", msg, tid, (int)result); |
f24e9980 SW |
1204 | /* lookup */ |
1205 | mutex_lock(&osdc->request_mutex); | |
1206 | req = __lookup_request(osdc, tid); | |
1207 | if (req == NULL) { | |
1208 | dout("handle_reply tid %llu dne\n", tid); | |
1209 | mutex_unlock(&osdc->request_mutex); | |
1210 | return; | |
1211 | } | |
1212 | ceph_osdc_get_request(req); | |
1213 | flags = le32_to_cpu(rhead->flags); | |
1214 | ||
350b1c32 | 1215 | /* |
0d59ab81 | 1216 | * if this connection filled our message, drop our reference now, to |
350b1c32 SW |
1217 | * avoid a (safe but slower) revoke later. |
1218 | */ | |
0d59ab81 | 1219 | if (req->r_con_filling_msg == con && req->r_reply == msg) { |
c16e7869 | 1220 | dout(" dropping con_filling_msg ref %p\n", con); |
0d59ab81 | 1221 | req->r_con_filling_msg = NULL; |
0d47766f | 1222 | con->ops->put(con); |
350b1c32 SW |
1223 | } |
1224 | ||
f24e9980 | 1225 | if (!req->r_got_reply) { |
95c96174 | 1226 | unsigned int bytes; |
f24e9980 SW |
1227 | |
1228 | req->r_result = le32_to_cpu(rhead->result); | |
1229 | bytes = le32_to_cpu(msg->hdr.data_len); | |
1230 | dout("handle_reply result %d bytes %d\n", req->r_result, | |
1231 | bytes); | |
1232 | if (req->r_result == 0) | |
1233 | req->r_result = bytes; | |
1234 | ||
1235 | /* in case this is a write and we need to replay, */ | |
1236 | req->r_reassert_version = rhead->reassert_version; | |
1237 | ||
1238 | req->r_got_reply = 1; | |
1239 | } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { | |
1240 | dout("handle_reply tid %llu dup ack\n", tid); | |
34b43a56 | 1241 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1242 | goto done; |
1243 | } | |
1244 | ||
1245 | dout("handle_reply tid %llu flags %d\n", tid, flags); | |
1246 | ||
a40c4f10 YS |
1247 | if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) |
1248 | __register_linger_request(osdc, req); | |
1249 | ||
f24e9980 | 1250 | /* either this is a read, or we got the safe response */ |
0ceed5db SW |
1251 | if (result < 0 || |
1252 | (flags & CEPH_OSD_FLAG_ONDISK) || | |
f24e9980 SW |
1253 | ((flags & CEPH_OSD_FLAG_WRITE) == 0)) |
1254 | __unregister_request(osdc, req); | |
1255 | ||
1256 | mutex_unlock(&osdc->request_mutex); | |
1257 | ||
1258 | if (req->r_callback) | |
1259 | req->r_callback(req, msg); | |
1260 | else | |
03066f23 | 1261 | complete_all(&req->r_completion); |
f24e9980 | 1262 | |
25845472 SW |
1263 | if (flags & CEPH_OSD_FLAG_ONDISK) |
1264 | complete_request(req); | |
f24e9980 SW |
1265 | |
1266 | done: | |
a40c4f10 | 1267 | dout("req=%p req->r_linger=%d\n", req, req->r_linger); |
f24e9980 SW |
1268 | ceph_osdc_put_request(req); |
1269 | return; | |
1270 | ||
1271 | bad: | |
1272 | pr_err("corrupt osd_op_reply got %d %d expected %d\n", | |
1273 | (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len), | |
1274 | (int)sizeof(*rhead)); | |
9ec7cab1 | 1275 | ceph_msg_dump(msg); |
f24e9980 SW |
1276 | } |
1277 | ||
6f6c7006 | 1278 | static void reset_changed_osds(struct ceph_osd_client *osdc) |
f24e9980 | 1279 | { |
f24e9980 | 1280 | struct rb_node *p, *n; |
f24e9980 | 1281 | |
6f6c7006 SW |
1282 | for (p = rb_first(&osdc->osds); p; p = n) { |
1283 | struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); | |
f24e9980 | 1284 | |
6f6c7006 SW |
1285 | n = rb_next(p); |
1286 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
1287 | memcmp(&osd->o_con.peer_addr, | |
1288 | ceph_osd_addr(osdc->osdmap, | |
1289 | osd->o_osd), | |
1290 | sizeof(struct ceph_entity_addr)) != 0) | |
1291 | __reset_osd(osdc, osd); | |
f24e9980 | 1292 | } |
422d2cb8 YS |
1293 | } |
1294 | ||
1295 | /* | |
6f6c7006 SW |
1296 | * Requeue requests whose mapping to an OSD has changed. If requests map to |
1297 | * no osd, request a new map. | |
422d2cb8 YS |
1298 | * |
1299 | * Caller should hold map_sem for read and request_mutex. | |
1300 | */ | |
38d6453c | 1301 | static void kick_requests(struct ceph_osd_client *osdc, int force_resend) |
422d2cb8 | 1302 | { |
a40c4f10 | 1303 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
1304 | struct rb_node *p; |
1305 | int needmap = 0; | |
1306 | int err; | |
422d2cb8 | 1307 | |
38d6453c | 1308 | dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); |
422d2cb8 | 1309 | mutex_lock(&osdc->request_mutex); |
6194ea89 | 1310 | for (p = rb_first(&osdc->requests); p; ) { |
6f6c7006 | 1311 | req = rb_entry(p, struct ceph_osd_request, r_node); |
6194ea89 | 1312 | p = rb_next(p); |
38d6453c | 1313 | err = __map_request(osdc, req, force_resend); |
6f6c7006 SW |
1314 | if (err < 0) |
1315 | continue; /* error */ | |
1316 | if (req->r_osd == NULL) { | |
1317 | dout("%p tid %llu maps to no osd\n", req, req->r_tid); | |
1318 | needmap++; /* request a newer map */ | |
1319 | } else if (err > 0) { | |
6194ea89 SW |
1320 | if (!req->r_linger) { |
1321 | dout("%p tid %llu requeued on osd%d\n", req, | |
1322 | req->r_tid, | |
1323 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1324 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
6194ea89 SW |
1325 | } |
1326 | } | |
1327 | if (req->r_linger && list_empty(&req->r_linger_item)) { | |
1328 | /* | |
1329 | * register as a linger so that we will | |
1330 | * re-submit below and get a new tid | |
1331 | */ | |
1332 | dout("%p tid %llu restart on osd%d\n", | |
1333 | req, req->r_tid, | |
1334 | req->r_osd ? req->r_osd->o_osd : -1); | |
1335 | __register_linger_request(osdc, req); | |
1336 | __unregister_request(osdc, req); | |
a40c4f10 YS |
1337 | } |
1338 | } | |
1339 | ||
1340 | list_for_each_entry_safe(req, nreq, &osdc->req_linger, | |
1341 | r_linger_item) { | |
1342 | dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); | |
1343 | ||
38d6453c | 1344 | err = __map_request(osdc, req, force_resend); |
a40c4f10 YS |
1345 | if (err == 0) |
1346 | continue; /* no change and no osd was specified */ | |
1347 | if (err < 0) | |
1348 | continue; /* hrm! */ | |
1349 | if (req->r_osd == NULL) { | |
1350 | dout("tid %llu maps to no valid osd\n", req->r_tid); | |
1351 | needmap++; /* request a newer map */ | |
1352 | continue; | |
6f6c7006 | 1353 | } |
a40c4f10 YS |
1354 | |
1355 | dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, | |
1356 | req->r_osd ? req->r_osd->o_osd : -1); | |
1357 | __unregister_linger_request(osdc, req); | |
1358 | __register_request(osdc, req); | |
6f6c7006 | 1359 | } |
f24e9980 SW |
1360 | mutex_unlock(&osdc->request_mutex); |
1361 | ||
1362 | if (needmap) { | |
1363 | dout("%d requests for down osds, need new map\n", needmap); | |
1364 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1365 | } | |
422d2cb8 | 1366 | } |
6f6c7006 SW |
1367 | |
1368 | ||
f24e9980 SW |
1369 | /* |
1370 | * Process updated osd map. | |
1371 | * | |
1372 | * The message contains any number of incremental and full maps, normally | |
1373 | * indicating some sort of topology change in the cluster. Kick requests | |
1374 | * off to different OSDs as needed. | |
1375 | */ | |
1376 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
1377 | { | |
1378 | void *p, *end, *next; | |
1379 | u32 nr_maps, maplen; | |
1380 | u32 epoch; | |
1381 | struct ceph_osdmap *newmap = NULL, *oldmap; | |
1382 | int err; | |
1383 | struct ceph_fsid fsid; | |
1384 | ||
1385 | dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); | |
1386 | p = msg->front.iov_base; | |
1387 | end = p + msg->front.iov_len; | |
1388 | ||
1389 | /* verify fsid */ | |
1390 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
1391 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d SW |
1392 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
1393 | return; | |
f24e9980 SW |
1394 | |
1395 | down_write(&osdc->map_sem); | |
1396 | ||
1397 | /* incremental maps */ | |
1398 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1399 | dout(" %d inc maps\n", nr_maps); | |
1400 | while (nr_maps > 0) { | |
1401 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1402 | epoch = ceph_decode_32(&p); |
1403 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1404 | ceph_decode_need(&p, end, maplen, bad); |
1405 | next = p + maplen; | |
1406 | if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { | |
1407 | dout("applying incremental map %u len %d\n", | |
1408 | epoch, maplen); | |
1409 | newmap = osdmap_apply_incremental(&p, next, | |
1410 | osdc->osdmap, | |
15d9882c | 1411 | &osdc->client->msgr); |
f24e9980 SW |
1412 | if (IS_ERR(newmap)) { |
1413 | err = PTR_ERR(newmap); | |
1414 | goto bad; | |
1415 | } | |
30dc6381 | 1416 | BUG_ON(!newmap); |
f24e9980 SW |
1417 | if (newmap != osdc->osdmap) { |
1418 | ceph_osdmap_destroy(osdc->osdmap); | |
1419 | osdc->osdmap = newmap; | |
1420 | } | |
38d6453c | 1421 | kick_requests(osdc, 0); |
6f6c7006 | 1422 | reset_changed_osds(osdc); |
f24e9980 SW |
1423 | } else { |
1424 | dout("ignoring incremental map %u len %d\n", | |
1425 | epoch, maplen); | |
1426 | } | |
1427 | p = next; | |
1428 | nr_maps--; | |
1429 | } | |
1430 | if (newmap) | |
1431 | goto done; | |
1432 | ||
1433 | /* full maps */ | |
1434 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1435 | dout(" %d full maps\n", nr_maps); | |
1436 | while (nr_maps) { | |
1437 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1438 | epoch = ceph_decode_32(&p); |
1439 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1440 | ceph_decode_need(&p, end, maplen, bad); |
1441 | if (nr_maps > 1) { | |
1442 | dout("skipping non-latest full map %u len %d\n", | |
1443 | epoch, maplen); | |
1444 | } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { | |
1445 | dout("skipping full map %u len %d, " | |
1446 | "older than our %u\n", epoch, maplen, | |
1447 | osdc->osdmap->epoch); | |
1448 | } else { | |
38d6453c SW |
1449 | int skipped_map = 0; |
1450 | ||
f24e9980 SW |
1451 | dout("taking full map %u len %d\n", epoch, maplen); |
1452 | newmap = osdmap_decode(&p, p+maplen); | |
1453 | if (IS_ERR(newmap)) { | |
1454 | err = PTR_ERR(newmap); | |
1455 | goto bad; | |
1456 | } | |
30dc6381 | 1457 | BUG_ON(!newmap); |
f24e9980 SW |
1458 | oldmap = osdc->osdmap; |
1459 | osdc->osdmap = newmap; | |
38d6453c SW |
1460 | if (oldmap) { |
1461 | if (oldmap->epoch + 1 < newmap->epoch) | |
1462 | skipped_map = 1; | |
f24e9980 | 1463 | ceph_osdmap_destroy(oldmap); |
38d6453c SW |
1464 | } |
1465 | kick_requests(osdc, skipped_map); | |
f24e9980 SW |
1466 | } |
1467 | p += maplen; | |
1468 | nr_maps--; | |
1469 | } | |
1470 | ||
1471 | done: | |
1472 | downgrade_write(&osdc->map_sem); | |
1473 | ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); | |
cd634fb6 SW |
1474 | |
1475 | /* | |
1476 | * subscribe to subsequent osdmap updates if full to ensure | |
1477 | * we find out when we are no longer full and stop returning | |
1478 | * ENOSPC. | |
1479 | */ | |
1480 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) | |
1481 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1482 | ||
6f6c7006 | 1483 | send_queued(osdc); |
f24e9980 | 1484 | up_read(&osdc->map_sem); |
03066f23 | 1485 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
1486 | return; |
1487 | ||
1488 | bad: | |
1489 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 1490 | ceph_msg_dump(msg); |
f24e9980 SW |
1491 | up_write(&osdc->map_sem); |
1492 | return; | |
1493 | } | |
1494 | ||
a40c4f10 YS |
1495 | /* |
1496 | * watch/notify callback event infrastructure | |
1497 | * | |
1498 | * These callbacks are used both for watch and notify operations. | |
1499 | */ | |
1500 | static void __release_event(struct kref *kref) | |
1501 | { | |
1502 | struct ceph_osd_event *event = | |
1503 | container_of(kref, struct ceph_osd_event, kref); | |
1504 | ||
1505 | dout("__release_event %p\n", event); | |
1506 | kfree(event); | |
1507 | } | |
1508 | ||
1509 | static void get_event(struct ceph_osd_event *event) | |
1510 | { | |
1511 | kref_get(&event->kref); | |
1512 | } | |
1513 | ||
1514 | void ceph_osdc_put_event(struct ceph_osd_event *event) | |
1515 | { | |
1516 | kref_put(&event->kref, __release_event); | |
1517 | } | |
1518 | EXPORT_SYMBOL(ceph_osdc_put_event); | |
1519 | ||
1520 | static void __insert_event(struct ceph_osd_client *osdc, | |
1521 | struct ceph_osd_event *new) | |
1522 | { | |
1523 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1524 | struct rb_node *parent = NULL; | |
1525 | struct ceph_osd_event *event = NULL; | |
1526 | ||
1527 | while (*p) { | |
1528 | parent = *p; | |
1529 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1530 | if (new->cookie < event->cookie) | |
1531 | p = &(*p)->rb_left; | |
1532 | else if (new->cookie > event->cookie) | |
1533 | p = &(*p)->rb_right; | |
1534 | else | |
1535 | BUG(); | |
1536 | } | |
1537 | ||
1538 | rb_link_node(&new->node, parent, p); | |
1539 | rb_insert_color(&new->node, &osdc->event_tree); | |
1540 | } | |
1541 | ||
1542 | static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, | |
1543 | u64 cookie) | |
1544 | { | |
1545 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1546 | struct rb_node *parent = NULL; | |
1547 | struct ceph_osd_event *event = NULL; | |
1548 | ||
1549 | while (*p) { | |
1550 | parent = *p; | |
1551 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1552 | if (cookie < event->cookie) | |
1553 | p = &(*p)->rb_left; | |
1554 | else if (cookie > event->cookie) | |
1555 | p = &(*p)->rb_right; | |
1556 | else | |
1557 | return event; | |
1558 | } | |
1559 | return NULL; | |
1560 | } | |
1561 | ||
1562 | static void __remove_event(struct ceph_osd_event *event) | |
1563 | { | |
1564 | struct ceph_osd_client *osdc = event->osdc; | |
1565 | ||
1566 | if (!RB_EMPTY_NODE(&event->node)) { | |
1567 | dout("__remove_event removed %p\n", event); | |
1568 | rb_erase(&event->node, &osdc->event_tree); | |
1569 | ceph_osdc_put_event(event); | |
1570 | } else { | |
1571 | dout("__remove_event didn't remove %p\n", event); | |
1572 | } | |
1573 | } | |
1574 | ||
1575 | int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
1576 | void (*event_cb)(u64, u64, u8, void *), | |
1577 | int one_shot, void *data, | |
1578 | struct ceph_osd_event **pevent) | |
1579 | { | |
1580 | struct ceph_osd_event *event; | |
1581 | ||
1582 | event = kmalloc(sizeof(*event), GFP_NOIO); | |
1583 | if (!event) | |
1584 | return -ENOMEM; | |
1585 | ||
1586 | dout("create_event %p\n", event); | |
1587 | event->cb = event_cb; | |
1588 | event->one_shot = one_shot; | |
1589 | event->data = data; | |
1590 | event->osdc = osdc; | |
1591 | INIT_LIST_HEAD(&event->osd_node); | |
1592 | kref_init(&event->kref); /* one ref for us */ | |
1593 | kref_get(&event->kref); /* one ref for the caller */ | |
1594 | init_completion(&event->completion); | |
1595 | ||
1596 | spin_lock(&osdc->event_lock); | |
1597 | event->cookie = ++osdc->event_count; | |
1598 | __insert_event(osdc, event); | |
1599 | spin_unlock(&osdc->event_lock); | |
1600 | ||
1601 | *pevent = event; | |
1602 | return 0; | |
1603 | } | |
1604 | EXPORT_SYMBOL(ceph_osdc_create_event); | |
1605 | ||
1606 | void ceph_osdc_cancel_event(struct ceph_osd_event *event) | |
1607 | { | |
1608 | struct ceph_osd_client *osdc = event->osdc; | |
1609 | ||
1610 | dout("cancel_event %p\n", event); | |
1611 | spin_lock(&osdc->event_lock); | |
1612 | __remove_event(event); | |
1613 | spin_unlock(&osdc->event_lock); | |
1614 | ceph_osdc_put_event(event); /* caller's */ | |
1615 | } | |
1616 | EXPORT_SYMBOL(ceph_osdc_cancel_event); | |
1617 | ||
1618 | ||
1619 | static void do_event_work(struct work_struct *work) | |
1620 | { | |
1621 | struct ceph_osd_event_work *event_work = | |
1622 | container_of(work, struct ceph_osd_event_work, work); | |
1623 | struct ceph_osd_event *event = event_work->event; | |
1624 | u64 ver = event_work->ver; | |
1625 | u64 notify_id = event_work->notify_id; | |
1626 | u8 opcode = event_work->opcode; | |
1627 | ||
1628 | dout("do_event_work completing %p\n", event); | |
1629 | event->cb(ver, notify_id, opcode, event->data); | |
1630 | complete(&event->completion); | |
1631 | dout("do_event_work completed %p\n", event); | |
1632 | ceph_osdc_put_event(event); | |
1633 | kfree(event_work); | |
1634 | } | |
1635 | ||
1636 | ||
1637 | /* | |
1638 | * Process osd watch notifications | |
1639 | */ | |
1640 | void handle_watch_notify(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
1641 | { | |
1642 | void *p, *end; | |
1643 | u8 proto_ver; | |
1644 | u64 cookie, ver, notify_id; | |
1645 | u8 opcode; | |
1646 | struct ceph_osd_event *event; | |
1647 | struct ceph_osd_event_work *event_work; | |
1648 | ||
1649 | p = msg->front.iov_base; | |
1650 | end = p + msg->front.iov_len; | |
1651 | ||
1652 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
1653 | ceph_decode_8_safe(&p, end, opcode, bad); | |
1654 | ceph_decode_64_safe(&p, end, cookie, bad); | |
1655 | ceph_decode_64_safe(&p, end, ver, bad); | |
1656 | ceph_decode_64_safe(&p, end, notify_id, bad); | |
1657 | ||
1658 | spin_lock(&osdc->event_lock); | |
1659 | event = __find_event(osdc, cookie); | |
1660 | if (event) { | |
1661 | get_event(event); | |
1662 | if (event->one_shot) | |
1663 | __remove_event(event); | |
1664 | } | |
1665 | spin_unlock(&osdc->event_lock); | |
1666 | dout("handle_watch_notify cookie %lld ver %lld event %p\n", | |
1667 | cookie, ver, event); | |
1668 | if (event) { | |
1669 | event_work = kmalloc(sizeof(*event_work), GFP_NOIO); | |
a40c4f10 YS |
1670 | if (!event_work) { |
1671 | dout("ERROR: could not allocate event_work\n"); | |
1672 | goto done_err; | |
1673 | } | |
6b0ae409 | 1674 | INIT_WORK(&event_work->work, do_event_work); |
a40c4f10 YS |
1675 | event_work->event = event; |
1676 | event_work->ver = ver; | |
1677 | event_work->notify_id = notify_id; | |
1678 | event_work->opcode = opcode; | |
1679 | if (!queue_work(osdc->notify_wq, &event_work->work)) { | |
1680 | dout("WARNING: failed to queue notify event work\n"); | |
1681 | goto done_err; | |
1682 | } | |
1683 | } | |
1684 | ||
1685 | return; | |
1686 | ||
1687 | done_err: | |
1688 | complete(&event->completion); | |
1689 | ceph_osdc_put_event(event); | |
1690 | return; | |
1691 | ||
1692 | bad: | |
1693 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
1694 | return; | |
1695 | } | |
1696 | ||
1697 | int ceph_osdc_wait_event(struct ceph_osd_event *event, unsigned long timeout) | |
1698 | { | |
1699 | int err; | |
1700 | ||
1701 | dout("wait_event %p\n", event); | |
1702 | err = wait_for_completion_interruptible_timeout(&event->completion, | |
1703 | timeout * HZ); | |
1704 | ceph_osdc_put_event(event); | |
1705 | if (err > 0) | |
1706 | err = 0; | |
1707 | dout("wait_event %p returns %d\n", event, err); | |
1708 | return err; | |
1709 | } | |
1710 | EXPORT_SYMBOL(ceph_osdc_wait_event); | |
1711 | ||
f24e9980 SW |
1712 | /* |
1713 | * Register request, send initial attempt. | |
1714 | */ | |
1715 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
1716 | struct ceph_osd_request *req, | |
1717 | bool nofail) | |
1718 | { | |
c1ea8823 | 1719 | int rc = 0; |
f24e9980 SW |
1720 | |
1721 | req->r_request->pages = req->r_pages; | |
1722 | req->r_request->nr_pages = req->r_num_pages; | |
68b4476b YS |
1723 | #ifdef CONFIG_BLOCK |
1724 | req->r_request->bio = req->r_bio; | |
1725 | #endif | |
1726 | req->r_request->trail = req->r_trail; | |
f24e9980 SW |
1727 | |
1728 | register_request(osdc, req); | |
1729 | ||
1730 | down_read(&osdc->map_sem); | |
1731 | mutex_lock(&osdc->request_mutex); | |
c1ea8823 SW |
1732 | /* |
1733 | * a racing kick_requests() may have sent the message for us | |
1734 | * while we dropped request_mutex above, so only send now if | |
1735 | * the request still han't been touched yet. | |
1736 | */ | |
1737 | if (req->r_sent == 0) { | |
38d6453c | 1738 | rc = __map_request(osdc, req, 0); |
9d6fcb08 SW |
1739 | if (rc < 0) { |
1740 | if (nofail) { | |
1741 | dout("osdc_start_request failed map, " | |
1742 | " will retry %lld\n", req->r_tid); | |
1743 | rc = 0; | |
1744 | } | |
234af26f | 1745 | goto out_unlock; |
9d6fcb08 | 1746 | } |
6f6c7006 SW |
1747 | if (req->r_osd == NULL) { |
1748 | dout("send_request %p no up osds in pg\n", req); | |
1749 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1750 | } else { | |
56e925b6 | 1751 | __send_request(osdc, req); |
f24e9980 | 1752 | } |
56e925b6 | 1753 | rc = 0; |
f24e9980 | 1754 | } |
234af26f DC |
1755 | |
1756 | out_unlock: | |
f24e9980 SW |
1757 | mutex_unlock(&osdc->request_mutex); |
1758 | up_read(&osdc->map_sem); | |
1759 | return rc; | |
1760 | } | |
3d14c5d2 | 1761 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 SW |
1762 | |
1763 | /* | |
1764 | * wait for a request to complete | |
1765 | */ | |
1766 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
1767 | struct ceph_osd_request *req) | |
1768 | { | |
1769 | int rc; | |
1770 | ||
1771 | rc = wait_for_completion_interruptible(&req->r_completion); | |
1772 | if (rc < 0) { | |
1773 | mutex_lock(&osdc->request_mutex); | |
1774 | __cancel_request(req); | |
529cfcc4 | 1775 | __unregister_request(osdc, req); |
f24e9980 | 1776 | mutex_unlock(&osdc->request_mutex); |
25845472 | 1777 | complete_request(req); |
529cfcc4 | 1778 | dout("wait_request tid %llu canceled/timed out\n", req->r_tid); |
f24e9980 SW |
1779 | return rc; |
1780 | } | |
1781 | ||
1782 | dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); | |
1783 | return req->r_result; | |
1784 | } | |
3d14c5d2 | 1785 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
1786 | |
1787 | /* | |
1788 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
1789 | */ | |
1790 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
1791 | { | |
1792 | struct ceph_osd_request *req; | |
1793 | u64 last_tid, next_tid = 0; | |
1794 | ||
1795 | mutex_lock(&osdc->request_mutex); | |
1796 | last_tid = osdc->last_tid; | |
1797 | while (1) { | |
1798 | req = __lookup_request_ge(osdc, next_tid); | |
1799 | if (!req) | |
1800 | break; | |
1801 | if (req->r_tid > last_tid) | |
1802 | break; | |
1803 | ||
1804 | next_tid = req->r_tid + 1; | |
1805 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) | |
1806 | continue; | |
1807 | ||
1808 | ceph_osdc_get_request(req); | |
1809 | mutex_unlock(&osdc->request_mutex); | |
1810 | dout("sync waiting on tid %llu (last is %llu)\n", | |
1811 | req->r_tid, last_tid); | |
1812 | wait_for_completion(&req->r_safe_completion); | |
1813 | mutex_lock(&osdc->request_mutex); | |
1814 | ceph_osdc_put_request(req); | |
1815 | } | |
1816 | mutex_unlock(&osdc->request_mutex); | |
1817 | dout("sync done (thru tid %llu)\n", last_tid); | |
1818 | } | |
3d14c5d2 | 1819 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 SW |
1820 | |
1821 | /* | |
1822 | * init, shutdown | |
1823 | */ | |
1824 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
1825 | { | |
1826 | int err; | |
1827 | ||
1828 | dout("init\n"); | |
1829 | osdc->client = client; | |
1830 | osdc->osdmap = NULL; | |
1831 | init_rwsem(&osdc->map_sem); | |
1832 | init_completion(&osdc->map_waiters); | |
1833 | osdc->last_requested_map = 0; | |
1834 | mutex_init(&osdc->request_mutex); | |
f24e9980 SW |
1835 | osdc->last_tid = 0; |
1836 | osdc->osds = RB_ROOT; | |
f5a2041b | 1837 | INIT_LIST_HEAD(&osdc->osd_lru); |
f24e9980 | 1838 | osdc->requests = RB_ROOT; |
422d2cb8 | 1839 | INIT_LIST_HEAD(&osdc->req_lru); |
6f6c7006 SW |
1840 | INIT_LIST_HEAD(&osdc->req_unsent); |
1841 | INIT_LIST_HEAD(&osdc->req_notarget); | |
a40c4f10 | 1842 | INIT_LIST_HEAD(&osdc->req_linger); |
f24e9980 SW |
1843 | osdc->num_requests = 0; |
1844 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); | |
f5a2041b | 1845 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10 YS |
1846 | spin_lock_init(&osdc->event_lock); |
1847 | osdc->event_tree = RB_ROOT; | |
1848 | osdc->event_count = 0; | |
f5a2041b YS |
1849 | |
1850 | schedule_delayed_work(&osdc->osds_timeout_work, | |
3d14c5d2 | 1851 | round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); |
f24e9980 | 1852 | |
5f44f142 | 1853 | err = -ENOMEM; |
f24e9980 SW |
1854 | osdc->req_mempool = mempool_create_kmalloc_pool(10, |
1855 | sizeof(struct ceph_osd_request)); | |
1856 | if (!osdc->req_mempool) | |
5f44f142 | 1857 | goto out; |
f24e9980 | 1858 | |
d50b409f SW |
1859 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
1860 | OSD_OP_FRONT_LEN, 10, true, | |
4f48280e | 1861 | "osd_op"); |
f24e9980 | 1862 | if (err < 0) |
5f44f142 | 1863 | goto out_mempool; |
d50b409f | 1864 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
4f48280e SW |
1865 | OSD_OPREPLY_FRONT_LEN, 10, true, |
1866 | "osd_op_reply"); | |
c16e7869 SW |
1867 | if (err < 0) |
1868 | goto out_msgpool; | |
a40c4f10 YS |
1869 | |
1870 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); | |
1871 | if (IS_ERR(osdc->notify_wq)) { | |
1872 | err = PTR_ERR(osdc->notify_wq); | |
1873 | osdc->notify_wq = NULL; | |
1874 | goto out_msgpool; | |
1875 | } | |
f24e9980 | 1876 | return 0; |
5f44f142 | 1877 | |
c16e7869 SW |
1878 | out_msgpool: |
1879 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
1880 | out_mempool: |
1881 | mempool_destroy(osdc->req_mempool); | |
1882 | out: | |
1883 | return err; | |
f24e9980 | 1884 | } |
3d14c5d2 | 1885 | EXPORT_SYMBOL(ceph_osdc_init); |
f24e9980 SW |
1886 | |
1887 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
1888 | { | |
a40c4f10 YS |
1889 | flush_workqueue(osdc->notify_wq); |
1890 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 1891 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 1892 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
f24e9980 SW |
1893 | if (osdc->osdmap) { |
1894 | ceph_osdmap_destroy(osdc->osdmap); | |
1895 | osdc->osdmap = NULL; | |
1896 | } | |
aca420bc | 1897 | remove_all_osds(osdc); |
f24e9980 SW |
1898 | mempool_destroy(osdc->req_mempool); |
1899 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 1900 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 | 1901 | } |
3d14c5d2 | 1902 | EXPORT_SYMBOL(ceph_osdc_stop); |
f24e9980 SW |
1903 | |
1904 | /* | |
1905 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
1906 | * *plen. Return number of bytes read, or error. | |
1907 | */ | |
1908 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
1909 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
1910 | u64 off, u64 *plen, | |
1911 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 1912 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
1913 | { |
1914 | struct ceph_osd_request *req; | |
1915 | int rc = 0; | |
1916 | ||
1917 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
1918 | vino.snap, off, *plen); | |
1919 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, | |
1920 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, | |
1921 | NULL, 0, truncate_seq, truncate_size, NULL, | |
b7495fc2 | 1922 | false, 1, page_align); |
a79832f2 SW |
1923 | if (!req) |
1924 | return -ENOMEM; | |
f24e9980 SW |
1925 | |
1926 | /* it may be a short read due to an object boundary */ | |
1927 | req->r_pages = pages; | |
f24e9980 | 1928 | |
b7495fc2 SW |
1929 | dout("readpages final extent is %llu~%llu (%d pages align %d)\n", |
1930 | off, *plen, req->r_num_pages, page_align); | |
f24e9980 SW |
1931 | |
1932 | rc = ceph_osdc_start_request(osdc, req, false); | |
1933 | if (!rc) | |
1934 | rc = ceph_osdc_wait_request(osdc, req); | |
1935 | ||
1936 | ceph_osdc_put_request(req); | |
1937 | dout("readpages result %d\n", rc); | |
1938 | return rc; | |
1939 | } | |
3d14c5d2 | 1940 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
1941 | |
1942 | /* | |
1943 | * do a synchronous write on N pages | |
1944 | */ | |
1945 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
1946 | struct ceph_file_layout *layout, | |
1947 | struct ceph_snap_context *snapc, | |
1948 | u64 off, u64 len, | |
1949 | u32 truncate_seq, u64 truncate_size, | |
1950 | struct timespec *mtime, | |
1951 | struct page **pages, int num_pages, | |
1952 | int flags, int do_sync, bool nofail) | |
1953 | { | |
1954 | struct ceph_osd_request *req; | |
1955 | int rc = 0; | |
b7495fc2 | 1956 | int page_align = off & ~PAGE_MASK; |
f24e9980 SW |
1957 | |
1958 | BUG_ON(vino.snap != CEPH_NOSNAP); | |
1959 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, | |
1960 | CEPH_OSD_OP_WRITE, | |
1961 | flags | CEPH_OSD_FLAG_ONDISK | | |
1962 | CEPH_OSD_FLAG_WRITE, | |
1963 | snapc, do_sync, | |
1964 | truncate_seq, truncate_size, mtime, | |
b7495fc2 | 1965 | nofail, 1, page_align); |
a79832f2 SW |
1966 | if (!req) |
1967 | return -ENOMEM; | |
f24e9980 SW |
1968 | |
1969 | /* it may be a short write due to an object boundary */ | |
1970 | req->r_pages = pages; | |
f24e9980 SW |
1971 | dout("writepages %llu~%llu (%d pages)\n", off, len, |
1972 | req->r_num_pages); | |
1973 | ||
1974 | rc = ceph_osdc_start_request(osdc, req, nofail); | |
1975 | if (!rc) | |
1976 | rc = ceph_osdc_wait_request(osdc, req); | |
1977 | ||
1978 | ceph_osdc_put_request(req); | |
1979 | if (rc == 0) | |
1980 | rc = len; | |
1981 | dout("writepages result %d\n", rc); | |
1982 | return rc; | |
1983 | } | |
3d14c5d2 | 1984 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 SW |
1985 | |
1986 | /* | |
1987 | * handle incoming message | |
1988 | */ | |
1989 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
1990 | { | |
1991 | struct ceph_osd *osd = con->private; | |
32c895e7 | 1992 | struct ceph_osd_client *osdc; |
f24e9980 SW |
1993 | int type = le16_to_cpu(msg->hdr.type); |
1994 | ||
1995 | if (!osd) | |
4a32f93d | 1996 | goto out; |
32c895e7 | 1997 | osdc = osd->o_osdc; |
f24e9980 SW |
1998 | |
1999 | switch (type) { | |
2000 | case CEPH_MSG_OSD_MAP: | |
2001 | ceph_osdc_handle_map(osdc, msg); | |
2002 | break; | |
2003 | case CEPH_MSG_OSD_OPREPLY: | |
350b1c32 | 2004 | handle_reply(osdc, msg, con); |
f24e9980 | 2005 | break; |
a40c4f10 YS |
2006 | case CEPH_MSG_WATCH_NOTIFY: |
2007 | handle_watch_notify(osdc, msg); | |
2008 | break; | |
f24e9980 SW |
2009 | |
2010 | default: | |
2011 | pr_err("received unknown message type %d %s\n", type, | |
2012 | ceph_msg_type_name(type)); | |
2013 | } | |
4a32f93d | 2014 | out: |
f24e9980 SW |
2015 | ceph_msg_put(msg); |
2016 | } | |
2017 | ||
5b3a4db3 | 2018 | /* |
21b667f6 SW |
2019 | * lookup and return message for incoming reply. set up reply message |
2020 | * pages. | |
5b3a4db3 SW |
2021 | */ |
2022 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
2023 | struct ceph_msg_header *hdr, |
2024 | int *skip) | |
f24e9980 SW |
2025 | { |
2026 | struct ceph_osd *osd = con->private; | |
2027 | struct ceph_osd_client *osdc = osd->o_osdc; | |
2450418c | 2028 | struct ceph_msg *m; |
0547a9b3 | 2029 | struct ceph_osd_request *req; |
5b3a4db3 SW |
2030 | int front = le32_to_cpu(hdr->front_len); |
2031 | int data_len = le32_to_cpu(hdr->data_len); | |
0547a9b3 | 2032 | u64 tid; |
f24e9980 | 2033 | |
0547a9b3 YS |
2034 | tid = le64_to_cpu(hdr->tid); |
2035 | mutex_lock(&osdc->request_mutex); | |
2036 | req = __lookup_request(osdc, tid); | |
2037 | if (!req) { | |
2038 | *skip = 1; | |
2039 | m = NULL; | |
c16e7869 | 2040 | pr_info("get_reply unknown tid %llu from osd%d\n", tid, |
5b3a4db3 | 2041 | osd->o_osd); |
0547a9b3 YS |
2042 | goto out; |
2043 | } | |
c16e7869 SW |
2044 | |
2045 | if (req->r_con_filling_msg) { | |
8921d114 | 2046 | dout("%s revoking msg %p from old con %p\n", __func__, |
c16e7869 | 2047 | req->r_reply, req->r_con_filling_msg); |
8921d114 | 2048 | ceph_msg_revoke_incoming(req->r_reply); |
0d47766f | 2049 | req->r_con_filling_msg->ops->put(req->r_con_filling_msg); |
6f46cb29 | 2050 | req->r_con_filling_msg = NULL; |
0547a9b3 YS |
2051 | } |
2052 | ||
c16e7869 SW |
2053 | if (front > req->r_reply->front.iov_len) { |
2054 | pr_warning("get_reply front %d > preallocated %d\n", | |
2055 | front, (int)req->r_reply->front.iov_len); | |
b61c2763 | 2056 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); |
a79832f2 | 2057 | if (!m) |
c16e7869 SW |
2058 | goto out; |
2059 | ceph_msg_put(req->r_reply); | |
2060 | req->r_reply = m; | |
2061 | } | |
2062 | m = ceph_msg_get(req->r_reply); | |
2063 | ||
0547a9b3 | 2064 | if (data_len > 0) { |
b7495fc2 | 2065 | int want = calc_pages_for(req->r_page_alignment, data_len); |
21b667f6 SW |
2066 | |
2067 | if (unlikely(req->r_num_pages < want)) { | |
9bb0ce2b SW |
2068 | pr_warning("tid %lld reply has %d bytes %d pages, we" |
2069 | " had only %d pages ready\n", tid, data_len, | |
2070 | want, req->r_num_pages); | |
0547a9b3 YS |
2071 | *skip = 1; |
2072 | ceph_msg_put(m); | |
a79832f2 | 2073 | m = NULL; |
21b667f6 | 2074 | goto out; |
0547a9b3 | 2075 | } |
21b667f6 SW |
2076 | m->pages = req->r_pages; |
2077 | m->nr_pages = req->r_num_pages; | |
c5c6b19d | 2078 | m->page_alignment = req->r_page_alignment; |
68b4476b YS |
2079 | #ifdef CONFIG_BLOCK |
2080 | m->bio = req->r_bio; | |
2081 | #endif | |
0547a9b3 | 2082 | } |
5b3a4db3 | 2083 | *skip = 0; |
0d47766f | 2084 | req->r_con_filling_msg = con->ops->get(con); |
c16e7869 | 2085 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 YS |
2086 | |
2087 | out: | |
2088 | mutex_unlock(&osdc->request_mutex); | |
2450418c | 2089 | return m; |
5b3a4db3 SW |
2090 | |
2091 | } | |
2092 | ||
2093 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, | |
2094 | struct ceph_msg_header *hdr, | |
2095 | int *skip) | |
2096 | { | |
2097 | struct ceph_osd *osd = con->private; | |
2098 | int type = le16_to_cpu(hdr->type); | |
2099 | int front = le32_to_cpu(hdr->front_len); | |
2100 | ||
1c20f2d2 | 2101 | *skip = 0; |
5b3a4db3 SW |
2102 | switch (type) { |
2103 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 2104 | case CEPH_MSG_WATCH_NOTIFY: |
b61c2763 | 2105 | return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3 SW |
2106 | case CEPH_MSG_OSD_OPREPLY: |
2107 | return get_reply(con, hdr, skip); | |
2108 | default: | |
2109 | pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, | |
2110 | osd->o_osd); | |
2111 | *skip = 1; | |
2112 | return NULL; | |
2113 | } | |
f24e9980 SW |
2114 | } |
2115 | ||
2116 | /* | |
2117 | * Wrappers to refcount containing ceph_osd struct | |
2118 | */ | |
2119 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
2120 | { | |
2121 | struct ceph_osd *osd = con->private; | |
2122 | if (get_osd(osd)) | |
2123 | return con; | |
2124 | return NULL; | |
2125 | } | |
2126 | ||
2127 | static void put_osd_con(struct ceph_connection *con) | |
2128 | { | |
2129 | struct ceph_osd *osd = con->private; | |
2130 | put_osd(osd); | |
2131 | } | |
2132 | ||
4e7a5dcd SW |
2133 | /* |
2134 | * authentication | |
2135 | */ | |
a3530df3 AE |
2136 | /* |
2137 | * Note: returned pointer is the address of a structure that's | |
2138 | * managed separately. Caller must *not* attempt to free it. | |
2139 | */ | |
2140 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 2141 | int *proto, int force_new) |
4e7a5dcd SW |
2142 | { |
2143 | struct ceph_osd *o = con->private; | |
2144 | struct ceph_osd_client *osdc = o->o_osdc; | |
2145 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 2146 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 2147 | |
74f1869f | 2148 | if (force_new && auth->authorizer) { |
a255651d AE |
2149 | if (ac->ops && ac->ops->destroy_authorizer) |
2150 | ac->ops->destroy_authorizer(ac, auth->authorizer); | |
74f1869f AE |
2151 | auth->authorizer = NULL; |
2152 | } | |
a255651d | 2153 | if (!auth->authorizer && ac->ops && ac->ops->create_authorizer) { |
a3530df3 AE |
2154 | int ret = ac->ops->create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, |
2155 | auth); | |
4e7a5dcd | 2156 | if (ret) |
a3530df3 | 2157 | return ERR_PTR(ret); |
4e7a5dcd | 2158 | } |
4e7a5dcd | 2159 | *proto = ac->protocol; |
74f1869f | 2160 | |
a3530df3 | 2161 | return auth; |
4e7a5dcd SW |
2162 | } |
2163 | ||
2164 | ||
2165 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
2166 | { | |
2167 | struct ceph_osd *o = con->private; | |
2168 | struct ceph_osd_client *osdc = o->o_osdc; | |
2169 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2170 | ||
a255651d AE |
2171 | /* |
2172 | * XXX If ac->ops or ac->ops->verify_authorizer_reply is null, | |
2173 | * XXX which do we do: succeed or fail? | |
2174 | */ | |
6c4a1915 | 2175 | return ac->ops->verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
2176 | } |
2177 | ||
9bd2e6f8 SW |
2178 | static int invalidate_authorizer(struct ceph_connection *con) |
2179 | { | |
2180 | struct ceph_osd *o = con->private; | |
2181 | struct ceph_osd_client *osdc = o->o_osdc; | |
2182 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2183 | ||
a255651d | 2184 | if (ac->ops && ac->ops->invalidate_authorizer) |
9bd2e6f8 SW |
2185 | ac->ops->invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
2186 | ||
2187 | return ceph_monc_validate_auth(&osdc->client->monc); | |
2188 | } | |
4e7a5dcd | 2189 | |
9e32789f | 2190 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
2191 | .get = get_osd_con, |
2192 | .put = put_osd_con, | |
2193 | .dispatch = dispatch, | |
4e7a5dcd SW |
2194 | .get_authorizer = get_authorizer, |
2195 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 2196 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 2197 | .alloc_msg = alloc_msg, |
81b024e7 | 2198 | .fault = osd_reset, |
f24e9980 | 2199 | }; |