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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_has_extent(int op) |
36 | { | |
37 | return (op == CEPH_OSD_OP_READ || | |
38 | op == CEPH_OSD_OP_WRITE); | |
39 | } | |
40 | ||
d63b77f4 | 41 | int ceph_calc_raw_layout(struct ceph_osd_client *osdc, |
3499e8a5 YS |
42 | struct ceph_file_layout *layout, |
43 | u64 snapid, | |
68b4476b YS |
44 | u64 off, u64 *plen, u64 *bno, |
45 | struct ceph_osd_request *req, | |
46 | struct ceph_osd_req_op *op) | |
3499e8a5 YS |
47 | { |
48 | struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base; | |
68b4476b | 49 | u64 orig_len = *plen; |
3499e8a5 | 50 | u64 objoff, objlen; /* extent in object */ |
d63b77f4 | 51 | int r; |
3499e8a5 YS |
52 | |
53 | reqhead->snapid = cpu_to_le64(snapid); | |
54 | ||
55 | /* object extent? */ | |
e8afad65 | 56 | r = ceph_calc_file_object_mapping(layout, off, orig_len, bno, |
d63b77f4 SW |
57 | &objoff, &objlen); |
58 | if (r < 0) | |
59 | return r; | |
e8afad65 AE |
60 | if (objlen < orig_len) { |
61 | *plen = objlen; | |
3499e8a5 | 62 | dout(" skipping last %llu, final file extent %llu~%llu\n", |
68b4476b | 63 | orig_len - *plen, off, *plen); |
e8afad65 | 64 | } |
3499e8a5 | 65 | |
68b4476b | 66 | if (op_has_extent(op->op)) { |
a41bad1a | 67 | u32 osize = le32_to_cpu(layout->fl_object_size); |
68b4476b YS |
68 | op->extent.offset = objoff; |
69 | op->extent.length = objlen; | |
a41bad1a YZ |
70 | if (op->extent.truncate_size <= off - objoff) { |
71 | op->extent.truncate_size = 0; | |
72 | } else { | |
73 | op->extent.truncate_size -= off - objoff; | |
74 | if (op->extent.truncate_size > osize) | |
75 | op->extent.truncate_size = osize; | |
76 | } | |
68b4476b YS |
77 | } |
78 | req->r_num_pages = calc_pages_for(off, *plen); | |
b7495fc2 | 79 | req->r_page_alignment = off & ~PAGE_MASK; |
3d14c5d2 YS |
80 | if (op->op == CEPH_OSD_OP_WRITE) |
81 | op->payload_len = *plen; | |
3499e8a5 YS |
82 | |
83 | dout("calc_layout bno=%llx %llu~%llu (%d pages)\n", | |
84 | *bno, objoff, objlen, req->r_num_pages); | |
d63b77f4 | 85 | return 0; |
3499e8a5 | 86 | } |
3d14c5d2 | 87 | EXPORT_SYMBOL(ceph_calc_raw_layout); |
3499e8a5 | 88 | |
f24e9980 SW |
89 | /* |
90 | * Implement client access to distributed object storage cluster. | |
91 | * | |
92 | * All data objects are stored within a cluster/cloud of OSDs, or | |
93 | * "object storage devices." (Note that Ceph OSDs have _nothing_ to | |
94 | * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply | |
95 | * remote daemons serving up and coordinating consistent and safe | |
96 | * access to storage. | |
97 | * | |
98 | * Cluster membership and the mapping of data objects onto storage devices | |
99 | * are described by the osd map. | |
100 | * | |
101 | * We keep track of pending OSD requests (read, write), resubmit | |
102 | * requests to different OSDs when the cluster topology/data layout | |
103 | * change, or retry the affected requests when the communications | |
104 | * channel with an OSD is reset. | |
105 | */ | |
106 | ||
107 | /* | |
108 | * calculate the mapping of a file extent onto an object, and fill out the | |
109 | * request accordingly. shorten extent as necessary if it crosses an | |
110 | * object boundary. | |
111 | * | |
112 | * fill osd op in request message. | |
113 | */ | |
d63b77f4 SW |
114 | static int calc_layout(struct ceph_osd_client *osdc, |
115 | struct ceph_vino vino, | |
116 | struct ceph_file_layout *layout, | |
117 | u64 off, u64 *plen, | |
118 | struct ceph_osd_request *req, | |
119 | struct ceph_osd_req_op *op) | |
f24e9980 | 120 | { |
f24e9980 | 121 | u64 bno; |
d63b77f4 | 122 | int r; |
f24e9980 | 123 | |
d63b77f4 SW |
124 | r = ceph_calc_raw_layout(osdc, layout, vino.snap, off, |
125 | plen, &bno, req, op); | |
126 | if (r < 0) | |
127 | return r; | |
f24e9980 | 128 | |
2dab036b | 129 | snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno); |
f24e9980 | 130 | req->r_oid_len = strlen(req->r_oid); |
d63b77f4 SW |
131 | |
132 | return r; | |
f24e9980 SW |
133 | } |
134 | ||
f24e9980 SW |
135 | /* |
136 | * requests | |
137 | */ | |
415e49a9 | 138 | void ceph_osdc_release_request(struct kref *kref) |
f24e9980 | 139 | { |
415e49a9 SW |
140 | struct ceph_osd_request *req = container_of(kref, |
141 | struct ceph_osd_request, | |
142 | r_kref); | |
143 | ||
144 | if (req->r_request) | |
145 | ceph_msg_put(req->r_request); | |
0d59ab81 | 146 | if (req->r_con_filling_msg) { |
8921d114 | 147 | dout("%s revoking pages %p from con %p\n", __func__, |
0d59ab81 | 148 | req->r_pages, req->r_con_filling_msg); |
8921d114 | 149 | ceph_msg_revoke_incoming(req->r_reply); |
0d47766f | 150 | req->r_con_filling_msg->ops->put(req->r_con_filling_msg); |
350b1c32 | 151 | } |
ab8cb34a AE |
152 | if (req->r_reply) |
153 | ceph_msg_put(req->r_reply); | |
415e49a9 SW |
154 | if (req->r_own_pages) |
155 | ceph_release_page_vector(req->r_pages, | |
156 | req->r_num_pages); | |
68b4476b YS |
157 | #ifdef CONFIG_BLOCK |
158 | if (req->r_bio) | |
159 | bio_put(req->r_bio); | |
160 | #endif | |
415e49a9 | 161 | ceph_put_snap_context(req->r_snapc); |
c885837f | 162 | ceph_pagelist_release(&req->r_trail); |
415e49a9 SW |
163 | if (req->r_mempool) |
164 | mempool_free(req, req->r_osdc->req_mempool); | |
165 | else | |
166 | kfree(req); | |
f24e9980 | 167 | } |
3d14c5d2 | 168 | EXPORT_SYMBOL(ceph_osdc_release_request); |
68b4476b | 169 | |
5b9d1b1c | 170 | static int get_num_ops(struct ceph_osd_req_op *ops) |
68b4476b YS |
171 | { |
172 | int i = 0; | |
173 | ||
5b9d1b1c | 174 | while (ops[i].op) |
68b4476b | 175 | i++; |
68b4476b YS |
176 | |
177 | return i; | |
178 | } | |
179 | ||
3499e8a5 YS |
180 | struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, |
181 | int flags, | |
f24e9980 | 182 | struct ceph_snap_context *snapc, |
68b4476b | 183 | struct ceph_osd_req_op *ops, |
3499e8a5 YS |
184 | bool use_mempool, |
185 | gfp_t gfp_flags, | |
68b4476b YS |
186 | struct page **pages, |
187 | struct bio *bio) | |
f24e9980 SW |
188 | { |
189 | struct ceph_osd_request *req; | |
190 | struct ceph_msg *msg; | |
5b9d1b1c | 191 | int num_op = get_num_ops(ops); |
68b4476b | 192 | size_t msg_size = sizeof(struct ceph_osd_request_head); |
3499e8a5 | 193 | |
68b4476b | 194 | msg_size += num_op*sizeof(struct ceph_osd_op); |
f24e9980 SW |
195 | |
196 | if (use_mempool) { | |
3499e8a5 | 197 | req = mempool_alloc(osdc->req_mempool, gfp_flags); |
f24e9980 SW |
198 | memset(req, 0, sizeof(*req)); |
199 | } else { | |
3499e8a5 | 200 | req = kzalloc(sizeof(*req), gfp_flags); |
f24e9980 SW |
201 | } |
202 | if (req == NULL) | |
a79832f2 | 203 | return NULL; |
f24e9980 | 204 | |
f24e9980 SW |
205 | req->r_osdc = osdc; |
206 | req->r_mempool = use_mempool; | |
68b4476b | 207 | |
415e49a9 | 208 | kref_init(&req->r_kref); |
f24e9980 SW |
209 | init_completion(&req->r_completion); |
210 | init_completion(&req->r_safe_completion); | |
a978fa20 | 211 | RB_CLEAR_NODE(&req->r_node); |
f24e9980 | 212 | INIT_LIST_HEAD(&req->r_unsafe_item); |
a40c4f10 YS |
213 | INIT_LIST_HEAD(&req->r_linger_item); |
214 | INIT_LIST_HEAD(&req->r_linger_osd); | |
935b639a | 215 | INIT_LIST_HEAD(&req->r_req_lru_item); |
cd43045c SW |
216 | INIT_LIST_HEAD(&req->r_osd_item); |
217 | ||
f24e9980 SW |
218 | req->r_flags = flags; |
219 | ||
220 | WARN_ON((flags & (CEPH_OSD_FLAG_READ|CEPH_OSD_FLAG_WRITE)) == 0); | |
221 | ||
c16e7869 SW |
222 | /* create reply message */ |
223 | if (use_mempool) | |
224 | msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); | |
225 | else | |
226 | msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, | |
b61c2763 | 227 | OSD_OPREPLY_FRONT_LEN, gfp_flags, true); |
a79832f2 | 228 | if (!msg) { |
c16e7869 | 229 | ceph_osdc_put_request(req); |
a79832f2 | 230 | return NULL; |
c16e7869 SW |
231 | } |
232 | req->r_reply = msg; | |
233 | ||
c885837f | 234 | ceph_pagelist_init(&req->r_trail); |
d50b409f | 235 | |
c16e7869 | 236 | /* create request message; allow space for oid */ |
224736d9 | 237 | msg_size += MAX_OBJ_NAME_SIZE; |
f24e9980 SW |
238 | if (snapc) |
239 | msg_size += sizeof(u64) * snapc->num_snaps; | |
240 | if (use_mempool) | |
8f3bc053 | 241 | msg = ceph_msgpool_get(&osdc->msgpool_op, 0); |
f24e9980 | 242 | else |
b61c2763 | 243 | msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); |
a79832f2 | 244 | if (!msg) { |
f24e9980 | 245 | ceph_osdc_put_request(req); |
a79832f2 | 246 | return NULL; |
f24e9980 | 247 | } |
68b4476b | 248 | |
f24e9980 | 249 | memset(msg->front.iov_base, 0, msg->front.iov_len); |
3499e8a5 YS |
250 | |
251 | req->r_request = msg; | |
252 | req->r_pages = pages; | |
68b4476b YS |
253 | #ifdef CONFIG_BLOCK |
254 | if (bio) { | |
255 | req->r_bio = bio; | |
256 | bio_get(req->r_bio); | |
257 | } | |
258 | #endif | |
3499e8a5 YS |
259 | |
260 | return req; | |
261 | } | |
3d14c5d2 | 262 | EXPORT_SYMBOL(ceph_osdc_alloc_request); |
3499e8a5 | 263 | |
68b4476b YS |
264 | static void osd_req_encode_op(struct ceph_osd_request *req, |
265 | struct ceph_osd_op *dst, | |
266 | struct ceph_osd_req_op *src) | |
267 | { | |
268 | dst->op = cpu_to_le16(src->op); | |
269 | ||
065a68f9 | 270 | switch (src->op) { |
68b4476b YS |
271 | case CEPH_OSD_OP_READ: |
272 | case CEPH_OSD_OP_WRITE: | |
273 | dst->extent.offset = | |
274 | cpu_to_le64(src->extent.offset); | |
275 | dst->extent.length = | |
276 | cpu_to_le64(src->extent.length); | |
277 | dst->extent.truncate_size = | |
278 | cpu_to_le64(src->extent.truncate_size); | |
279 | dst->extent.truncate_seq = | |
280 | cpu_to_le32(src->extent.truncate_seq); | |
281 | break; | |
282 | ||
283 | case CEPH_OSD_OP_GETXATTR: | |
284 | case CEPH_OSD_OP_SETXATTR: | |
285 | case CEPH_OSD_OP_CMPXATTR: | |
68b4476b YS |
286 | dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); |
287 | dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); | |
288 | dst->xattr.cmp_op = src->xattr.cmp_op; | |
289 | dst->xattr.cmp_mode = src->xattr.cmp_mode; | |
c885837f | 290 | ceph_pagelist_append(&req->r_trail, src->xattr.name, |
68b4476b | 291 | src->xattr.name_len); |
c885837f | 292 | ceph_pagelist_append(&req->r_trail, src->xattr.val, |
68b4476b YS |
293 | src->xattr.value_len); |
294 | break; | |
ae1533b6 | 295 | case CEPH_OSD_OP_CALL: |
ae1533b6 YS |
296 | dst->cls.class_len = src->cls.class_len; |
297 | dst->cls.method_len = src->cls.method_len; | |
298 | dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); | |
299 | ||
c885837f | 300 | ceph_pagelist_append(&req->r_trail, src->cls.class_name, |
ae1533b6 | 301 | src->cls.class_len); |
c885837f | 302 | ceph_pagelist_append(&req->r_trail, src->cls.method_name, |
ae1533b6 | 303 | src->cls.method_len); |
c885837f | 304 | ceph_pagelist_append(&req->r_trail, src->cls.indata, |
ae1533b6 YS |
305 | src->cls.indata_len); |
306 | break; | |
307 | case CEPH_OSD_OP_ROLLBACK: | |
308 | dst->snap.snapid = cpu_to_le64(src->snap.snapid); | |
309 | break; | |
68b4476b YS |
310 | case CEPH_OSD_OP_STARTSYNC: |
311 | break; | |
a40c4f10 YS |
312 | case CEPH_OSD_OP_NOTIFY: |
313 | { | |
314 | __le32 prot_ver = cpu_to_le32(src->watch.prot_ver); | |
315 | __le32 timeout = cpu_to_le32(src->watch.timeout); | |
316 | ||
c885837f | 317 | ceph_pagelist_append(&req->r_trail, |
a40c4f10 | 318 | &prot_ver, sizeof(prot_ver)); |
c885837f | 319 | ceph_pagelist_append(&req->r_trail, |
a40c4f10 YS |
320 | &timeout, sizeof(timeout)); |
321 | } | |
322 | case CEPH_OSD_OP_NOTIFY_ACK: | |
323 | case CEPH_OSD_OP_WATCH: | |
324 | dst->watch.cookie = cpu_to_le64(src->watch.cookie); | |
325 | dst->watch.ver = cpu_to_le64(src->watch.ver); | |
326 | dst->watch.flag = src->watch.flag; | |
327 | break; | |
68b4476b YS |
328 | default: |
329 | pr_err("unrecognized osd opcode %d\n", dst->op); | |
330 | WARN_ON(1); | |
331 | break; | |
332 | } | |
333 | dst->payload_len = cpu_to_le32(src->payload_len); | |
334 | } | |
335 | ||
3499e8a5 YS |
336 | /* |
337 | * build new request AND message | |
338 | * | |
339 | */ | |
340 | void ceph_osdc_build_request(struct ceph_osd_request *req, | |
0120be3c | 341 | u64 off, u64 len, |
68b4476b YS |
342 | struct ceph_osd_req_op *src_ops, |
343 | struct ceph_snap_context *snapc, | |
af77f26c | 344 | struct timespec *mtime) |
3499e8a5 YS |
345 | { |
346 | struct ceph_msg *msg = req->r_request; | |
347 | struct ceph_osd_request_head *head; | |
68b4476b | 348 | struct ceph_osd_req_op *src_op; |
3499e8a5 YS |
349 | struct ceph_osd_op *op; |
350 | void *p; | |
5b9d1b1c | 351 | int num_op = get_num_ops(src_ops); |
3499e8a5 | 352 | size_t msg_size = sizeof(*head) + num_op*sizeof(*op); |
3499e8a5 | 353 | int flags = req->r_flags; |
68b4476b YS |
354 | u64 data_len = 0; |
355 | int i; | |
3499e8a5 | 356 | |
f24e9980 SW |
357 | head = msg->front.iov_base; |
358 | op = (void *)(head + 1); | |
359 | p = (void *)(op + num_op); | |
360 | ||
f24e9980 SW |
361 | req->r_snapc = ceph_get_snap_context(snapc); |
362 | ||
363 | head->client_inc = cpu_to_le32(1); /* always, for now. */ | |
364 | head->flags = cpu_to_le32(flags); | |
365 | if (flags & CEPH_OSD_FLAG_WRITE) | |
366 | ceph_encode_timespec(&head->mtime, mtime); | |
367 | head->num_ops = cpu_to_le16(num_op); | |
f24e9980 | 368 | |
f24e9980 SW |
369 | |
370 | /* fill in oid */ | |
af77f26c AE |
371 | head->object_len = cpu_to_le32(req->r_oid_len); |
372 | memcpy(p, req->r_oid, req->r_oid_len); | |
373 | p += req->r_oid_len; | |
f24e9980 | 374 | |
68b4476b YS |
375 | src_op = src_ops; |
376 | while (src_op->op) { | |
377 | osd_req_encode_op(req, op, src_op); | |
378 | src_op++; | |
f24e9980 | 379 | op++; |
f24e9980 | 380 | } |
68b4476b | 381 | |
c885837f | 382 | data_len += req->r_trail.length; |
68b4476b | 383 | |
f24e9980 SW |
384 | if (snapc) { |
385 | head->snap_seq = cpu_to_le64(snapc->seq); | |
386 | head->num_snaps = cpu_to_le32(snapc->num_snaps); | |
387 | for (i = 0; i < snapc->num_snaps; i++) { | |
388 | put_unaligned_le64(snapc->snaps[i], p); | |
389 | p += sizeof(u64); | |
390 | } | |
391 | } | |
392 | ||
68b4476b YS |
393 | if (flags & CEPH_OSD_FLAG_WRITE) { |
394 | req->r_request->hdr.data_off = cpu_to_le16(off); | |
0120be3c | 395 | req->r_request->hdr.data_len = cpu_to_le32(len + data_len); |
68b4476b YS |
396 | } else if (data_len) { |
397 | req->r_request->hdr.data_off = 0; | |
398 | req->r_request->hdr.data_len = cpu_to_le32(data_len); | |
399 | } | |
400 | ||
c5c6b19d SW |
401 | req->r_request->page_alignment = req->r_page_alignment; |
402 | ||
f24e9980 | 403 | BUG_ON(p > msg->front.iov_base + msg->front.iov_len); |
6f863e71 SW |
404 | msg_size = p - msg->front.iov_base; |
405 | msg->front.iov_len = msg_size; | |
406 | msg->hdr.front_len = cpu_to_le32(msg_size); | |
3499e8a5 YS |
407 | return; |
408 | } | |
3d14c5d2 | 409 | EXPORT_SYMBOL(ceph_osdc_build_request); |
3499e8a5 YS |
410 | |
411 | /* | |
412 | * build new request AND message, calculate layout, and adjust file | |
413 | * extent as needed. | |
414 | * | |
415 | * if the file was recently truncated, we include information about its | |
416 | * old and new size so that the object can be updated appropriately. (we | |
417 | * avoid synchronously deleting truncated objects because it's slow.) | |
418 | * | |
419 | * if @do_sync, include a 'startsync' command so that the osd will flush | |
420 | * data quickly. | |
421 | */ | |
422 | struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, | |
423 | struct ceph_file_layout *layout, | |
424 | struct ceph_vino vino, | |
425 | u64 off, u64 *plen, | |
426 | int opcode, int flags, | |
427 | struct ceph_snap_context *snapc, | |
428 | int do_sync, | |
429 | u32 truncate_seq, | |
430 | u64 truncate_size, | |
431 | struct timespec *mtime, | |
b7495fc2 SW |
432 | bool use_mempool, int num_reply, |
433 | int page_align) | |
3499e8a5 | 434 | { |
68b4476b YS |
435 | struct ceph_osd_req_op ops[3]; |
436 | struct ceph_osd_request *req; | |
6816282d | 437 | int r; |
68b4476b YS |
438 | |
439 | ops[0].op = opcode; | |
440 | ops[0].extent.truncate_seq = truncate_seq; | |
441 | ops[0].extent.truncate_size = truncate_size; | |
442 | ops[0].payload_len = 0; | |
443 | ||
444 | if (do_sync) { | |
445 | ops[1].op = CEPH_OSD_OP_STARTSYNC; | |
446 | ops[1].payload_len = 0; | |
447 | ops[2].op = 0; | |
448 | } else | |
449 | ops[1].op = 0; | |
450 | ||
451 | req = ceph_osdc_alloc_request(osdc, flags, | |
452 | snapc, ops, | |
3499e8a5 | 453 | use_mempool, |
68b4476b | 454 | GFP_NOFS, NULL, NULL); |
4ad12621 | 455 | if (!req) |
6816282d | 456 | return ERR_PTR(-ENOMEM); |
3499e8a5 YS |
457 | |
458 | /* calculate max write size */ | |
6816282d SW |
459 | r = calc_layout(osdc, vino, layout, off, plen, req, ops); |
460 | if (r < 0) | |
461 | return ERR_PTR(r); | |
3499e8a5 YS |
462 | req->r_file_layout = *layout; /* keep a copy */ |
463 | ||
9bb0ce2b SW |
464 | /* in case it differs from natural (file) alignment that |
465 | calc_layout filled in for us */ | |
466 | req->r_num_pages = calc_pages_for(page_align, *plen); | |
b7495fc2 SW |
467 | req->r_page_alignment = page_align; |
468 | ||
0120be3c | 469 | ceph_osdc_build_request(req, off, *plen, ops, |
68b4476b | 470 | snapc, |
af77f26c | 471 | mtime); |
3499e8a5 | 472 | |
f24e9980 SW |
473 | return req; |
474 | } | |
3d14c5d2 | 475 | EXPORT_SYMBOL(ceph_osdc_new_request); |
f24e9980 SW |
476 | |
477 | /* | |
478 | * We keep osd requests in an rbtree, sorted by ->r_tid. | |
479 | */ | |
480 | static void __insert_request(struct ceph_osd_client *osdc, | |
481 | struct ceph_osd_request *new) | |
482 | { | |
483 | struct rb_node **p = &osdc->requests.rb_node; | |
484 | struct rb_node *parent = NULL; | |
485 | struct ceph_osd_request *req = NULL; | |
486 | ||
487 | while (*p) { | |
488 | parent = *p; | |
489 | req = rb_entry(parent, struct ceph_osd_request, r_node); | |
490 | if (new->r_tid < req->r_tid) | |
491 | p = &(*p)->rb_left; | |
492 | else if (new->r_tid > req->r_tid) | |
493 | p = &(*p)->rb_right; | |
494 | else | |
495 | BUG(); | |
496 | } | |
497 | ||
498 | rb_link_node(&new->r_node, parent, p); | |
499 | rb_insert_color(&new->r_node, &osdc->requests); | |
500 | } | |
501 | ||
502 | static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, | |
503 | u64 tid) | |
504 | { | |
505 | struct ceph_osd_request *req; | |
506 | struct rb_node *n = osdc->requests.rb_node; | |
507 | ||
508 | while (n) { | |
509 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
510 | if (tid < req->r_tid) | |
511 | n = n->rb_left; | |
512 | else if (tid > req->r_tid) | |
513 | n = n->rb_right; | |
514 | else | |
515 | return req; | |
516 | } | |
517 | return NULL; | |
518 | } | |
519 | ||
520 | static struct ceph_osd_request * | |
521 | __lookup_request_ge(struct ceph_osd_client *osdc, | |
522 | u64 tid) | |
523 | { | |
524 | struct ceph_osd_request *req; | |
525 | struct rb_node *n = osdc->requests.rb_node; | |
526 | ||
527 | while (n) { | |
528 | req = rb_entry(n, struct ceph_osd_request, r_node); | |
529 | if (tid < req->r_tid) { | |
530 | if (!n->rb_left) | |
531 | return req; | |
532 | n = n->rb_left; | |
533 | } else if (tid > req->r_tid) { | |
534 | n = n->rb_right; | |
535 | } else { | |
536 | return req; | |
537 | } | |
538 | } | |
539 | return NULL; | |
540 | } | |
541 | ||
6f6c7006 SW |
542 | /* |
543 | * Resubmit requests pending on the given osd. | |
544 | */ | |
545 | static void __kick_osd_requests(struct ceph_osd_client *osdc, | |
546 | struct ceph_osd *osd) | |
547 | { | |
a40c4f10 | 548 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
549 | int err; |
550 | ||
551 | dout("__kick_osd_requests osd%d\n", osd->o_osd); | |
552 | err = __reset_osd(osdc, osd); | |
685a7555 | 553 | if (err) |
6f6c7006 SW |
554 | return; |
555 | ||
556 | list_for_each_entry(req, &osd->o_requests, r_osd_item) { | |
557 | list_move(&req->r_req_lru_item, &osdc->req_unsent); | |
558 | dout("requeued %p tid %llu osd%d\n", req, req->r_tid, | |
559 | osd->o_osd); | |
a40c4f10 YS |
560 | if (!req->r_linger) |
561 | req->r_flags |= CEPH_OSD_FLAG_RETRY; | |
562 | } | |
563 | ||
564 | list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, | |
565 | r_linger_osd) { | |
77f38e0e SW |
566 | /* |
567 | * reregister request prior to unregistering linger so | |
568 | * that r_osd is preserved. | |
569 | */ | |
570 | BUG_ON(!list_empty(&req->r_req_lru_item)); | |
a40c4f10 | 571 | __register_request(osdc, req); |
77f38e0e SW |
572 | list_add(&req->r_req_lru_item, &osdc->req_unsent); |
573 | list_add(&req->r_osd_item, &req->r_osd->o_requests); | |
574 | __unregister_linger_request(osdc, req); | |
a40c4f10 YS |
575 | dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, |
576 | osd->o_osd); | |
6f6c7006 SW |
577 | } |
578 | } | |
579 | ||
f24e9980 | 580 | /* |
81b024e7 | 581 | * If the osd connection drops, we need to resubmit all requests. |
f24e9980 SW |
582 | */ |
583 | static void osd_reset(struct ceph_connection *con) | |
584 | { | |
585 | struct ceph_osd *osd = con->private; | |
586 | struct ceph_osd_client *osdc; | |
587 | ||
588 | if (!osd) | |
589 | return; | |
590 | dout("osd_reset osd%d\n", osd->o_osd); | |
591 | osdc = osd->o_osdc; | |
f24e9980 | 592 | down_read(&osdc->map_sem); |
83aff95e SW |
593 | mutex_lock(&osdc->request_mutex); |
594 | __kick_osd_requests(osdc, osd); | |
595 | mutex_unlock(&osdc->request_mutex); | |
6f6c7006 | 596 | send_queued(osdc); |
f24e9980 SW |
597 | up_read(&osdc->map_sem); |
598 | } | |
599 | ||
600 | /* | |
601 | * Track open sessions with osds. | |
602 | */ | |
e10006f8 | 603 | static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) |
f24e9980 SW |
604 | { |
605 | struct ceph_osd *osd; | |
606 | ||
607 | osd = kzalloc(sizeof(*osd), GFP_NOFS); | |
608 | if (!osd) | |
609 | return NULL; | |
610 | ||
611 | atomic_set(&osd->o_ref, 1); | |
612 | osd->o_osdc = osdc; | |
e10006f8 | 613 | osd->o_osd = onum; |
f407731d | 614 | RB_CLEAR_NODE(&osd->o_node); |
f24e9980 | 615 | INIT_LIST_HEAD(&osd->o_requests); |
a40c4f10 | 616 | INIT_LIST_HEAD(&osd->o_linger_requests); |
f5a2041b | 617 | INIT_LIST_HEAD(&osd->o_osd_lru); |
f24e9980 SW |
618 | osd->o_incarnation = 1; |
619 | ||
b7a9e5dd | 620 | ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); |
4e7a5dcd | 621 | |
422d2cb8 | 622 | INIT_LIST_HEAD(&osd->o_keepalive_item); |
f24e9980 SW |
623 | return osd; |
624 | } | |
625 | ||
626 | static struct ceph_osd *get_osd(struct ceph_osd *osd) | |
627 | { | |
628 | if (atomic_inc_not_zero(&osd->o_ref)) { | |
629 | dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, | |
630 | atomic_read(&osd->o_ref)); | |
631 | return osd; | |
632 | } else { | |
633 | dout("get_osd %p FAIL\n", osd); | |
634 | return NULL; | |
635 | } | |
636 | } | |
637 | ||
638 | static void put_osd(struct ceph_osd *osd) | |
639 | { | |
640 | dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), | |
641 | atomic_read(&osd->o_ref) - 1); | |
a255651d | 642 | if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { |
79494d1b SW |
643 | struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; |
644 | ||
a255651d | 645 | if (ac->ops && ac->ops->destroy_authorizer) |
6c4a1915 | 646 | ac->ops->destroy_authorizer(ac, osd->o_auth.authorizer); |
f24e9980 | 647 | kfree(osd); |
79494d1b | 648 | } |
f24e9980 SW |
649 | } |
650 | ||
651 | /* | |
652 | * remove an osd from our map | |
653 | */ | |
f5a2041b | 654 | static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 655 | { |
f5a2041b | 656 | dout("__remove_osd %p\n", osd); |
f24e9980 SW |
657 | BUG_ON(!list_empty(&osd->o_requests)); |
658 | rb_erase(&osd->o_node, &osdc->osds); | |
f5a2041b | 659 | list_del_init(&osd->o_osd_lru); |
f24e9980 SW |
660 | ceph_con_close(&osd->o_con); |
661 | put_osd(osd); | |
662 | } | |
663 | ||
aca420bc SW |
664 | static void remove_all_osds(struct ceph_osd_client *osdc) |
665 | { | |
048a9d2d | 666 | dout("%s %p\n", __func__, osdc); |
aca420bc SW |
667 | mutex_lock(&osdc->request_mutex); |
668 | while (!RB_EMPTY_ROOT(&osdc->osds)) { | |
669 | struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), | |
670 | struct ceph_osd, o_node); | |
671 | __remove_osd(osdc, osd); | |
672 | } | |
673 | mutex_unlock(&osdc->request_mutex); | |
674 | } | |
675 | ||
f5a2041b YS |
676 | static void __move_osd_to_lru(struct ceph_osd_client *osdc, |
677 | struct ceph_osd *osd) | |
678 | { | |
679 | dout("__move_osd_to_lru %p\n", osd); | |
680 | BUG_ON(!list_empty(&osd->o_osd_lru)); | |
681 | list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); | |
3d14c5d2 | 682 | osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; |
f5a2041b YS |
683 | } |
684 | ||
685 | static void __remove_osd_from_lru(struct ceph_osd *osd) | |
686 | { | |
687 | dout("__remove_osd_from_lru %p\n", osd); | |
688 | if (!list_empty(&osd->o_osd_lru)) | |
689 | list_del_init(&osd->o_osd_lru); | |
690 | } | |
691 | ||
aca420bc | 692 | static void remove_old_osds(struct ceph_osd_client *osdc) |
f5a2041b YS |
693 | { |
694 | struct ceph_osd *osd, *nosd; | |
695 | ||
696 | dout("__remove_old_osds %p\n", osdc); | |
697 | mutex_lock(&osdc->request_mutex); | |
698 | list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { | |
aca420bc | 699 | if (time_before(jiffies, osd->lru_ttl)) |
f5a2041b YS |
700 | break; |
701 | __remove_osd(osdc, osd); | |
702 | } | |
703 | mutex_unlock(&osdc->request_mutex); | |
704 | } | |
705 | ||
f24e9980 SW |
706 | /* |
707 | * reset osd connect | |
708 | */ | |
f5a2041b | 709 | static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) |
f24e9980 | 710 | { |
c3acb181 | 711 | struct ceph_entity_addr *peer_addr; |
f24e9980 | 712 | |
f5a2041b | 713 | dout("__reset_osd %p osd%d\n", osd, osd->o_osd); |
a40c4f10 YS |
714 | if (list_empty(&osd->o_requests) && |
715 | list_empty(&osd->o_linger_requests)) { | |
f5a2041b | 716 | __remove_osd(osdc, osd); |
c3acb181 AE |
717 | |
718 | return -ENODEV; | |
719 | } | |
720 | ||
721 | peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; | |
722 | if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && | |
723 | !ceph_con_opened(&osd->o_con)) { | |
724 | struct ceph_osd_request *req; | |
725 | ||
87b315a5 SW |
726 | dout(" osd addr hasn't changed and connection never opened," |
727 | " letting msgr retry"); | |
728 | /* touch each r_stamp for handle_timeout()'s benfit */ | |
729 | list_for_each_entry(req, &osd->o_requests, r_osd_item) | |
730 | req->r_stamp = jiffies; | |
c3acb181 AE |
731 | |
732 | return -EAGAIN; | |
f24e9980 | 733 | } |
c3acb181 AE |
734 | |
735 | ceph_con_close(&osd->o_con); | |
736 | ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); | |
737 | osd->o_incarnation++; | |
738 | ||
739 | return 0; | |
f24e9980 SW |
740 | } |
741 | ||
742 | static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) | |
743 | { | |
744 | struct rb_node **p = &osdc->osds.rb_node; | |
745 | struct rb_node *parent = NULL; | |
746 | struct ceph_osd *osd = NULL; | |
747 | ||
aca420bc | 748 | dout("__insert_osd %p osd%d\n", new, new->o_osd); |
f24e9980 SW |
749 | while (*p) { |
750 | parent = *p; | |
751 | osd = rb_entry(parent, struct ceph_osd, o_node); | |
752 | if (new->o_osd < osd->o_osd) | |
753 | p = &(*p)->rb_left; | |
754 | else if (new->o_osd > osd->o_osd) | |
755 | p = &(*p)->rb_right; | |
756 | else | |
757 | BUG(); | |
758 | } | |
759 | ||
760 | rb_link_node(&new->o_node, parent, p); | |
761 | rb_insert_color(&new->o_node, &osdc->osds); | |
762 | } | |
763 | ||
764 | static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) | |
765 | { | |
766 | struct ceph_osd *osd; | |
767 | struct rb_node *n = osdc->osds.rb_node; | |
768 | ||
769 | while (n) { | |
770 | osd = rb_entry(n, struct ceph_osd, o_node); | |
771 | if (o < osd->o_osd) | |
772 | n = n->rb_left; | |
773 | else if (o > osd->o_osd) | |
774 | n = n->rb_right; | |
775 | else | |
776 | return osd; | |
777 | } | |
778 | return NULL; | |
779 | } | |
780 | ||
422d2cb8 YS |
781 | static void __schedule_osd_timeout(struct ceph_osd_client *osdc) |
782 | { | |
783 | schedule_delayed_work(&osdc->timeout_work, | |
3d14c5d2 | 784 | osdc->client->options->osd_keepalive_timeout * HZ); |
422d2cb8 YS |
785 | } |
786 | ||
787 | static void __cancel_osd_timeout(struct ceph_osd_client *osdc) | |
788 | { | |
789 | cancel_delayed_work(&osdc->timeout_work); | |
790 | } | |
f24e9980 SW |
791 | |
792 | /* | |
793 | * Register request, assign tid. If this is the first request, set up | |
794 | * the timeout event. | |
795 | */ | |
a40c4f10 YS |
796 | static void __register_request(struct ceph_osd_client *osdc, |
797 | struct ceph_osd_request *req) | |
f24e9980 | 798 | { |
f24e9980 | 799 | req->r_tid = ++osdc->last_tid; |
6df058c0 | 800 | req->r_request->hdr.tid = cpu_to_le64(req->r_tid); |
77f38e0e | 801 | dout("__register_request %p tid %lld\n", req, req->r_tid); |
f24e9980 SW |
802 | __insert_request(osdc, req); |
803 | ceph_osdc_get_request(req); | |
804 | osdc->num_requests++; | |
f24e9980 | 805 | if (osdc->num_requests == 1) { |
422d2cb8 YS |
806 | dout(" first request, scheduling timeout\n"); |
807 | __schedule_osd_timeout(osdc); | |
f24e9980 | 808 | } |
a40c4f10 YS |
809 | } |
810 | ||
811 | static void register_request(struct ceph_osd_client *osdc, | |
812 | struct ceph_osd_request *req) | |
813 | { | |
814 | mutex_lock(&osdc->request_mutex); | |
815 | __register_request(osdc, req); | |
f24e9980 SW |
816 | mutex_unlock(&osdc->request_mutex); |
817 | } | |
818 | ||
819 | /* | |
820 | * called under osdc->request_mutex | |
821 | */ | |
822 | static void __unregister_request(struct ceph_osd_client *osdc, | |
823 | struct ceph_osd_request *req) | |
824 | { | |
35f9f8a0 SW |
825 | if (RB_EMPTY_NODE(&req->r_node)) { |
826 | dout("__unregister_request %p tid %lld not registered\n", | |
827 | req, req->r_tid); | |
828 | return; | |
829 | } | |
830 | ||
f24e9980 SW |
831 | dout("__unregister_request %p tid %lld\n", req, req->r_tid); |
832 | rb_erase(&req->r_node, &osdc->requests); | |
833 | osdc->num_requests--; | |
834 | ||
0ba6478d SW |
835 | if (req->r_osd) { |
836 | /* make sure the original request isn't in flight. */ | |
6740a845 | 837 | ceph_msg_revoke(req->r_request); |
0ba6478d SW |
838 | |
839 | list_del_init(&req->r_osd_item); | |
a40c4f10 YS |
840 | if (list_empty(&req->r_osd->o_requests) && |
841 | list_empty(&req->r_osd->o_linger_requests)) { | |
842 | dout("moving osd to %p lru\n", req->r_osd); | |
f5a2041b | 843 | __move_osd_to_lru(osdc, req->r_osd); |
a40c4f10 | 844 | } |
fbdb9190 | 845 | if (list_empty(&req->r_linger_item)) |
a40c4f10 | 846 | req->r_osd = NULL; |
0ba6478d | 847 | } |
f24e9980 | 848 | |
7d5f2481 | 849 | list_del_init(&req->r_req_lru_item); |
f24e9980 SW |
850 | ceph_osdc_put_request(req); |
851 | ||
422d2cb8 YS |
852 | if (osdc->num_requests == 0) { |
853 | dout(" no requests, canceling timeout\n"); | |
854 | __cancel_osd_timeout(osdc); | |
f24e9980 SW |
855 | } |
856 | } | |
857 | ||
858 | /* | |
859 | * Cancel a previously queued request message | |
860 | */ | |
861 | static void __cancel_request(struct ceph_osd_request *req) | |
862 | { | |
6bc18876 | 863 | if (req->r_sent && req->r_osd) { |
6740a845 | 864 | ceph_msg_revoke(req->r_request); |
f24e9980 SW |
865 | req->r_sent = 0; |
866 | } | |
867 | } | |
868 | ||
a40c4f10 YS |
869 | static void __register_linger_request(struct ceph_osd_client *osdc, |
870 | struct ceph_osd_request *req) | |
871 | { | |
872 | dout("__register_linger_request %p\n", req); | |
873 | list_add_tail(&req->r_linger_item, &osdc->req_linger); | |
6194ea89 SW |
874 | if (req->r_osd) |
875 | list_add_tail(&req->r_linger_osd, | |
876 | &req->r_osd->o_linger_requests); | |
a40c4f10 YS |
877 | } |
878 | ||
879 | static void __unregister_linger_request(struct ceph_osd_client *osdc, | |
880 | struct ceph_osd_request *req) | |
881 | { | |
882 | dout("__unregister_linger_request %p\n", req); | |
61c74035 | 883 | list_del_init(&req->r_linger_item); |
a40c4f10 | 884 | if (req->r_osd) { |
a40c4f10 YS |
885 | list_del_init(&req->r_linger_osd); |
886 | ||
887 | if (list_empty(&req->r_osd->o_requests) && | |
888 | list_empty(&req->r_osd->o_linger_requests)) { | |
889 | dout("moving osd to %p lru\n", req->r_osd); | |
890 | __move_osd_to_lru(osdc, req->r_osd); | |
891 | } | |
fbdb9190 SW |
892 | if (list_empty(&req->r_osd_item)) |
893 | req->r_osd = NULL; | |
a40c4f10 YS |
894 | } |
895 | } | |
896 | ||
897 | void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, | |
898 | struct ceph_osd_request *req) | |
899 | { | |
900 | mutex_lock(&osdc->request_mutex); | |
901 | if (req->r_linger) { | |
902 | __unregister_linger_request(osdc, req); | |
903 | ceph_osdc_put_request(req); | |
904 | } | |
905 | mutex_unlock(&osdc->request_mutex); | |
906 | } | |
907 | EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); | |
908 | ||
909 | void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, | |
910 | struct ceph_osd_request *req) | |
911 | { | |
912 | if (!req->r_linger) { | |
913 | dout("set_request_linger %p\n", req); | |
914 | req->r_linger = 1; | |
915 | /* | |
916 | * caller is now responsible for calling | |
917 | * unregister_linger_request | |
918 | */ | |
919 | ceph_osdc_get_request(req); | |
920 | } | |
921 | } | |
922 | EXPORT_SYMBOL(ceph_osdc_set_request_linger); | |
923 | ||
f24e9980 SW |
924 | /* |
925 | * Pick an osd (the first 'up' osd in the pg), allocate the osd struct | |
926 | * (as needed), and set the request r_osd appropriately. If there is | |
25985edc | 927 | * no up osd, set r_osd to NULL. Move the request to the appropriate list |
6f6c7006 | 928 | * (unsent, homeless) or leave on in-flight lru. |
f24e9980 SW |
929 | * |
930 | * Return 0 if unchanged, 1 if changed, or negative on error. | |
931 | * | |
932 | * Caller should hold map_sem for read and request_mutex. | |
933 | */ | |
6f6c7006 | 934 | static int __map_request(struct ceph_osd_client *osdc, |
38d6453c | 935 | struct ceph_osd_request *req, int force_resend) |
f24e9980 SW |
936 | { |
937 | struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base; | |
51042122 | 938 | struct ceph_pg pgid; |
d85b7056 SW |
939 | int acting[CEPH_PG_MAX_SIZE]; |
940 | int o = -1, num = 0; | |
f24e9980 | 941 | int err; |
f24e9980 | 942 | |
6f6c7006 | 943 | dout("map_request %p tid %lld\n", req, req->r_tid); |
f24e9980 SW |
944 | err = ceph_calc_object_layout(&reqhead->layout, req->r_oid, |
945 | &req->r_file_layout, osdc->osdmap); | |
6f6c7006 SW |
946 | if (err) { |
947 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f24e9980 | 948 | return err; |
6f6c7006 | 949 | } |
51042122 | 950 | pgid = reqhead->layout.ol_pgid; |
7740a42f SW |
951 | req->r_pgid = pgid; |
952 | ||
d85b7056 SW |
953 | err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); |
954 | if (err > 0) { | |
955 | o = acting[0]; | |
956 | num = err; | |
957 | } | |
f24e9980 | 958 | |
38d6453c SW |
959 | if ((!force_resend && |
960 | req->r_osd && req->r_osd->o_osd == o && | |
d85b7056 SW |
961 | req->r_sent >= req->r_osd->o_incarnation && |
962 | req->r_num_pg_osds == num && | |
963 | memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || | |
f24e9980 SW |
964 | (req->r_osd == NULL && o == -1)) |
965 | return 0; /* no change */ | |
966 | ||
6f6c7006 | 967 | dout("map_request tid %llu pgid %d.%x osd%d (was osd%d)\n", |
51042122 | 968 | req->r_tid, le32_to_cpu(pgid.pool), le16_to_cpu(pgid.ps), o, |
f24e9980 SW |
969 | req->r_osd ? req->r_osd->o_osd : -1); |
970 | ||
d85b7056 SW |
971 | /* record full pg acting set */ |
972 | memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); | |
973 | req->r_num_pg_osds = num; | |
974 | ||
f24e9980 SW |
975 | if (req->r_osd) { |
976 | __cancel_request(req); | |
977 | list_del_init(&req->r_osd_item); | |
f24e9980 SW |
978 | req->r_osd = NULL; |
979 | } | |
980 | ||
981 | req->r_osd = __lookup_osd(osdc, o); | |
982 | if (!req->r_osd && o >= 0) { | |
c99eb1c7 | 983 | err = -ENOMEM; |
e10006f8 | 984 | req->r_osd = create_osd(osdc, o); |
6f6c7006 SW |
985 | if (!req->r_osd) { |
986 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
c99eb1c7 | 987 | goto out; |
6f6c7006 | 988 | } |
f24e9980 | 989 | |
6f6c7006 | 990 | dout("map_request osd %p is osd%d\n", req->r_osd, o); |
f24e9980 SW |
991 | __insert_osd(osdc, req->r_osd); |
992 | ||
b7a9e5dd SW |
993 | ceph_con_open(&req->r_osd->o_con, |
994 | CEPH_ENTITY_TYPE_OSD, o, | |
995 | &osdc->osdmap->osd_addr[o]); | |
f24e9980 SW |
996 | } |
997 | ||
f5a2041b YS |
998 | if (req->r_osd) { |
999 | __remove_osd_from_lru(req->r_osd); | |
f24e9980 | 1000 | list_add(&req->r_osd_item, &req->r_osd->o_requests); |
6f6c7006 SW |
1001 | list_move(&req->r_req_lru_item, &osdc->req_unsent); |
1002 | } else { | |
1003 | list_move(&req->r_req_lru_item, &osdc->req_notarget); | |
f5a2041b | 1004 | } |
d85b7056 | 1005 | err = 1; /* osd or pg changed */ |
f24e9980 SW |
1006 | |
1007 | out: | |
f24e9980 SW |
1008 | return err; |
1009 | } | |
1010 | ||
1011 | /* | |
1012 | * caller should hold map_sem (for read) and request_mutex | |
1013 | */ | |
56e925b6 SW |
1014 | static void __send_request(struct ceph_osd_client *osdc, |
1015 | struct ceph_osd_request *req) | |
f24e9980 SW |
1016 | { |
1017 | struct ceph_osd_request_head *reqhead; | |
f24e9980 SW |
1018 | |
1019 | dout("send_request %p tid %llu to osd%d flags %d\n", | |
1020 | req, req->r_tid, req->r_osd->o_osd, req->r_flags); | |
1021 | ||
1022 | reqhead = req->r_request->front.iov_base; | |
1023 | reqhead->osdmap_epoch = cpu_to_le32(osdc->osdmap->epoch); | |
1024 | reqhead->flags |= cpu_to_le32(req->r_flags); /* e.g., RETRY */ | |
1025 | reqhead->reassert_version = req->r_reassert_version; | |
1026 | ||
3dd72fc0 | 1027 | req->r_stamp = jiffies; |
07a27e22 | 1028 | list_move_tail(&req->r_req_lru_item, &osdc->req_lru); |
f24e9980 SW |
1029 | |
1030 | ceph_msg_get(req->r_request); /* send consumes a ref */ | |
1031 | ceph_con_send(&req->r_osd->o_con, req->r_request); | |
1032 | req->r_sent = req->r_osd->o_incarnation; | |
f24e9980 SW |
1033 | } |
1034 | ||
6f6c7006 SW |
1035 | /* |
1036 | * Send any requests in the queue (req_unsent). | |
1037 | */ | |
1038 | static void send_queued(struct ceph_osd_client *osdc) | |
1039 | { | |
1040 | struct ceph_osd_request *req, *tmp; | |
1041 | ||
1042 | dout("send_queued\n"); | |
1043 | mutex_lock(&osdc->request_mutex); | |
1044 | list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) { | |
1045 | __send_request(osdc, req); | |
1046 | } | |
1047 | mutex_unlock(&osdc->request_mutex); | |
1048 | } | |
1049 | ||
f24e9980 SW |
1050 | /* |
1051 | * Timeout callback, called every N seconds when 1 or more osd | |
1052 | * requests has been active for more than N seconds. When this | |
1053 | * happens, we ping all OSDs with requests who have timed out to | |
1054 | * ensure any communications channel reset is detected. Reset the | |
1055 | * request timeouts another N seconds in the future as we go. | |
1056 | * Reschedule the timeout event another N seconds in future (unless | |
1057 | * there are no open requests). | |
1058 | */ | |
1059 | static void handle_timeout(struct work_struct *work) | |
1060 | { | |
1061 | struct ceph_osd_client *osdc = | |
1062 | container_of(work, struct ceph_osd_client, timeout_work.work); | |
83aff95e | 1063 | struct ceph_osd_request *req; |
f24e9980 | 1064 | struct ceph_osd *osd; |
422d2cb8 | 1065 | unsigned long keepalive = |
3d14c5d2 | 1066 | osdc->client->options->osd_keepalive_timeout * HZ; |
422d2cb8 | 1067 | struct list_head slow_osds; |
f24e9980 SW |
1068 | dout("timeout\n"); |
1069 | down_read(&osdc->map_sem); | |
1070 | ||
1071 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1072 | ||
1073 | mutex_lock(&osdc->request_mutex); | |
f24e9980 | 1074 | |
422d2cb8 YS |
1075 | /* |
1076 | * ping osds that are a bit slow. this ensures that if there | |
1077 | * is a break in the TCP connection we will notice, and reopen | |
1078 | * a connection with that osd (from the fault callback). | |
1079 | */ | |
1080 | INIT_LIST_HEAD(&slow_osds); | |
1081 | list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { | |
3dd72fc0 | 1082 | if (time_before(jiffies, req->r_stamp + keepalive)) |
422d2cb8 YS |
1083 | break; |
1084 | ||
1085 | osd = req->r_osd; | |
1086 | BUG_ON(!osd); | |
1087 | dout(" tid %llu is slow, will send keepalive on osd%d\n", | |
f24e9980 | 1088 | req->r_tid, osd->o_osd); |
422d2cb8 YS |
1089 | list_move_tail(&osd->o_keepalive_item, &slow_osds); |
1090 | } | |
1091 | while (!list_empty(&slow_osds)) { | |
1092 | osd = list_entry(slow_osds.next, struct ceph_osd, | |
1093 | o_keepalive_item); | |
1094 | list_del_init(&osd->o_keepalive_item); | |
f24e9980 SW |
1095 | ceph_con_keepalive(&osd->o_con); |
1096 | } | |
1097 | ||
422d2cb8 | 1098 | __schedule_osd_timeout(osdc); |
f24e9980 | 1099 | mutex_unlock(&osdc->request_mutex); |
6f6c7006 | 1100 | send_queued(osdc); |
f24e9980 SW |
1101 | up_read(&osdc->map_sem); |
1102 | } | |
1103 | ||
f5a2041b YS |
1104 | static void handle_osds_timeout(struct work_struct *work) |
1105 | { | |
1106 | struct ceph_osd_client *osdc = | |
1107 | container_of(work, struct ceph_osd_client, | |
1108 | osds_timeout_work.work); | |
1109 | unsigned long delay = | |
3d14c5d2 | 1110 | osdc->client->options->osd_idle_ttl * HZ >> 2; |
f5a2041b YS |
1111 | |
1112 | dout("osds timeout\n"); | |
1113 | down_read(&osdc->map_sem); | |
aca420bc | 1114 | remove_old_osds(osdc); |
f5a2041b YS |
1115 | up_read(&osdc->map_sem); |
1116 | ||
1117 | schedule_delayed_work(&osdc->osds_timeout_work, | |
1118 | round_jiffies_relative(delay)); | |
1119 | } | |
1120 | ||
25845472 SW |
1121 | static void complete_request(struct ceph_osd_request *req) |
1122 | { | |
1123 | if (req->r_safe_callback) | |
1124 | req->r_safe_callback(req, NULL); | |
1125 | complete_all(&req->r_safe_completion); /* fsync waiter */ | |
1126 | } | |
1127 | ||
f24e9980 SW |
1128 | /* |
1129 | * handle osd op reply. either call the callback if it is specified, | |
1130 | * or do the completion to wake up the waiting thread. | |
1131 | */ | |
350b1c32 SW |
1132 | static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, |
1133 | struct ceph_connection *con) | |
f24e9980 SW |
1134 | { |
1135 | struct ceph_osd_reply_head *rhead = msg->front.iov_base; | |
1136 | struct ceph_osd_request *req; | |
1137 | u64 tid; | |
1138 | int numops, object_len, flags; | |
0ceed5db | 1139 | s32 result; |
f24e9980 | 1140 | |
6df058c0 | 1141 | tid = le64_to_cpu(msg->hdr.tid); |
f24e9980 SW |
1142 | if (msg->front.iov_len < sizeof(*rhead)) |
1143 | goto bad; | |
f24e9980 SW |
1144 | numops = le32_to_cpu(rhead->num_ops); |
1145 | object_len = le32_to_cpu(rhead->object_len); | |
0ceed5db | 1146 | result = le32_to_cpu(rhead->result); |
f24e9980 SW |
1147 | if (msg->front.iov_len != sizeof(*rhead) + object_len + |
1148 | numops * sizeof(struct ceph_osd_op)) | |
1149 | goto bad; | |
0ceed5db | 1150 | dout("handle_reply %p tid %llu result %d\n", msg, tid, (int)result); |
f24e9980 SW |
1151 | /* lookup */ |
1152 | mutex_lock(&osdc->request_mutex); | |
1153 | req = __lookup_request(osdc, tid); | |
1154 | if (req == NULL) { | |
1155 | dout("handle_reply tid %llu dne\n", tid); | |
1156 | mutex_unlock(&osdc->request_mutex); | |
1157 | return; | |
1158 | } | |
1159 | ceph_osdc_get_request(req); | |
1160 | flags = le32_to_cpu(rhead->flags); | |
1161 | ||
350b1c32 | 1162 | /* |
0d59ab81 | 1163 | * if this connection filled our message, drop our reference now, to |
350b1c32 SW |
1164 | * avoid a (safe but slower) revoke later. |
1165 | */ | |
0d59ab81 | 1166 | if (req->r_con_filling_msg == con && req->r_reply == msg) { |
c16e7869 | 1167 | dout(" dropping con_filling_msg ref %p\n", con); |
0d59ab81 | 1168 | req->r_con_filling_msg = NULL; |
0d47766f | 1169 | con->ops->put(con); |
350b1c32 SW |
1170 | } |
1171 | ||
f24e9980 | 1172 | if (!req->r_got_reply) { |
95c96174 | 1173 | unsigned int bytes; |
f24e9980 SW |
1174 | |
1175 | req->r_result = le32_to_cpu(rhead->result); | |
1176 | bytes = le32_to_cpu(msg->hdr.data_len); | |
1177 | dout("handle_reply result %d bytes %d\n", req->r_result, | |
1178 | bytes); | |
1179 | if (req->r_result == 0) | |
1180 | req->r_result = bytes; | |
1181 | ||
1182 | /* in case this is a write and we need to replay, */ | |
1183 | req->r_reassert_version = rhead->reassert_version; | |
1184 | ||
1185 | req->r_got_reply = 1; | |
1186 | } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { | |
1187 | dout("handle_reply tid %llu dup ack\n", tid); | |
34b43a56 | 1188 | mutex_unlock(&osdc->request_mutex); |
f24e9980 SW |
1189 | goto done; |
1190 | } | |
1191 | ||
1192 | dout("handle_reply tid %llu flags %d\n", tid, flags); | |
1193 | ||
a40c4f10 YS |
1194 | if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) |
1195 | __register_linger_request(osdc, req); | |
1196 | ||
f24e9980 | 1197 | /* either this is a read, or we got the safe response */ |
0ceed5db SW |
1198 | if (result < 0 || |
1199 | (flags & CEPH_OSD_FLAG_ONDISK) || | |
f24e9980 SW |
1200 | ((flags & CEPH_OSD_FLAG_WRITE) == 0)) |
1201 | __unregister_request(osdc, req); | |
1202 | ||
1203 | mutex_unlock(&osdc->request_mutex); | |
1204 | ||
1205 | if (req->r_callback) | |
1206 | req->r_callback(req, msg); | |
1207 | else | |
03066f23 | 1208 | complete_all(&req->r_completion); |
f24e9980 | 1209 | |
25845472 SW |
1210 | if (flags & CEPH_OSD_FLAG_ONDISK) |
1211 | complete_request(req); | |
f24e9980 SW |
1212 | |
1213 | done: | |
a40c4f10 | 1214 | dout("req=%p req->r_linger=%d\n", req, req->r_linger); |
f24e9980 SW |
1215 | ceph_osdc_put_request(req); |
1216 | return; | |
1217 | ||
1218 | bad: | |
1219 | pr_err("corrupt osd_op_reply got %d %d expected %d\n", | |
1220 | (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len), | |
1221 | (int)sizeof(*rhead)); | |
9ec7cab1 | 1222 | ceph_msg_dump(msg); |
f24e9980 SW |
1223 | } |
1224 | ||
6f6c7006 | 1225 | static void reset_changed_osds(struct ceph_osd_client *osdc) |
f24e9980 | 1226 | { |
f24e9980 | 1227 | struct rb_node *p, *n; |
f24e9980 | 1228 | |
6f6c7006 SW |
1229 | for (p = rb_first(&osdc->osds); p; p = n) { |
1230 | struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); | |
f24e9980 | 1231 | |
6f6c7006 SW |
1232 | n = rb_next(p); |
1233 | if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || | |
1234 | memcmp(&osd->o_con.peer_addr, | |
1235 | ceph_osd_addr(osdc->osdmap, | |
1236 | osd->o_osd), | |
1237 | sizeof(struct ceph_entity_addr)) != 0) | |
1238 | __reset_osd(osdc, osd); | |
f24e9980 | 1239 | } |
422d2cb8 YS |
1240 | } |
1241 | ||
1242 | /* | |
6f6c7006 SW |
1243 | * Requeue requests whose mapping to an OSD has changed. If requests map to |
1244 | * no osd, request a new map. | |
422d2cb8 | 1245 | * |
e6d50f67 | 1246 | * Caller should hold map_sem for read. |
422d2cb8 | 1247 | */ |
38d6453c | 1248 | static void kick_requests(struct ceph_osd_client *osdc, int force_resend) |
422d2cb8 | 1249 | { |
a40c4f10 | 1250 | struct ceph_osd_request *req, *nreq; |
6f6c7006 SW |
1251 | struct rb_node *p; |
1252 | int needmap = 0; | |
1253 | int err; | |
422d2cb8 | 1254 | |
38d6453c | 1255 | dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); |
422d2cb8 | 1256 | mutex_lock(&osdc->request_mutex); |
6194ea89 | 1257 | for (p = rb_first(&osdc->requests); p; ) { |
6f6c7006 | 1258 | req = rb_entry(p, struct ceph_osd_request, r_node); |
6194ea89 | 1259 | p = rb_next(p); |
ab60b16d AE |
1260 | |
1261 | /* | |
1262 | * For linger requests that have not yet been | |
1263 | * registered, move them to the linger list; they'll | |
1264 | * be sent to the osd in the loop below. Unregister | |
1265 | * the request before re-registering it as a linger | |
1266 | * request to ensure the __map_request() below | |
1267 | * will decide it needs to be sent. | |
1268 | */ | |
1269 | if (req->r_linger && list_empty(&req->r_linger_item)) { | |
1270 | dout("%p tid %llu restart on osd%d\n", | |
1271 | req, req->r_tid, | |
1272 | req->r_osd ? req->r_osd->o_osd : -1); | |
1273 | __unregister_request(osdc, req); | |
1274 | __register_linger_request(osdc, req); | |
1275 | continue; | |
1276 | } | |
1277 | ||
38d6453c | 1278 | err = __map_request(osdc, req, force_resend); |
6f6c7006 SW |
1279 | if (err < 0) |
1280 | continue; /* error */ | |
1281 | if (req->r_osd == NULL) { | |
1282 | dout("%p tid %llu maps to no osd\n", req, req->r_tid); | |
1283 | needmap++; /* request a newer map */ | |
1284 | } else if (err > 0) { | |
6194ea89 SW |
1285 | if (!req->r_linger) { |
1286 | dout("%p tid %llu requeued on osd%d\n", req, | |
1287 | req->r_tid, | |
1288 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1289 | req->r_flags |= CEPH_OSD_FLAG_RETRY; |
6194ea89 SW |
1290 | } |
1291 | } | |
a40c4f10 YS |
1292 | } |
1293 | ||
1294 | list_for_each_entry_safe(req, nreq, &osdc->req_linger, | |
1295 | r_linger_item) { | |
1296 | dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); | |
1297 | ||
38d6453c | 1298 | err = __map_request(osdc, req, force_resend); |
ab60b16d | 1299 | dout("__map_request returned %d\n", err); |
a40c4f10 YS |
1300 | if (err == 0) |
1301 | continue; /* no change and no osd was specified */ | |
1302 | if (err < 0) | |
1303 | continue; /* hrm! */ | |
1304 | if (req->r_osd == NULL) { | |
1305 | dout("tid %llu maps to no valid osd\n", req->r_tid); | |
1306 | needmap++; /* request a newer map */ | |
1307 | continue; | |
6f6c7006 | 1308 | } |
a40c4f10 YS |
1309 | |
1310 | dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, | |
1311 | req->r_osd ? req->r_osd->o_osd : -1); | |
a40c4f10 | 1312 | __register_request(osdc, req); |
c89ce05e | 1313 | __unregister_linger_request(osdc, req); |
6f6c7006 | 1314 | } |
f24e9980 SW |
1315 | mutex_unlock(&osdc->request_mutex); |
1316 | ||
1317 | if (needmap) { | |
1318 | dout("%d requests for down osds, need new map\n", needmap); | |
1319 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1320 | } | |
e6d50f67 | 1321 | reset_changed_osds(osdc); |
422d2cb8 | 1322 | } |
6f6c7006 SW |
1323 | |
1324 | ||
f24e9980 SW |
1325 | /* |
1326 | * Process updated osd map. | |
1327 | * | |
1328 | * The message contains any number of incremental and full maps, normally | |
1329 | * indicating some sort of topology change in the cluster. Kick requests | |
1330 | * off to different OSDs as needed. | |
1331 | */ | |
1332 | void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
1333 | { | |
1334 | void *p, *end, *next; | |
1335 | u32 nr_maps, maplen; | |
1336 | u32 epoch; | |
1337 | struct ceph_osdmap *newmap = NULL, *oldmap; | |
1338 | int err; | |
1339 | struct ceph_fsid fsid; | |
1340 | ||
1341 | dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); | |
1342 | p = msg->front.iov_base; | |
1343 | end = p + msg->front.iov_len; | |
1344 | ||
1345 | /* verify fsid */ | |
1346 | ceph_decode_need(&p, end, sizeof(fsid), bad); | |
1347 | ceph_decode_copy(&p, &fsid, sizeof(fsid)); | |
0743304d SW |
1348 | if (ceph_check_fsid(osdc->client, &fsid) < 0) |
1349 | return; | |
f24e9980 SW |
1350 | |
1351 | down_write(&osdc->map_sem); | |
1352 | ||
1353 | /* incremental maps */ | |
1354 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1355 | dout(" %d inc maps\n", nr_maps); | |
1356 | while (nr_maps > 0) { | |
1357 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1358 | epoch = ceph_decode_32(&p); |
1359 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1360 | ceph_decode_need(&p, end, maplen, bad); |
1361 | next = p + maplen; | |
1362 | if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { | |
1363 | dout("applying incremental map %u len %d\n", | |
1364 | epoch, maplen); | |
1365 | newmap = osdmap_apply_incremental(&p, next, | |
1366 | osdc->osdmap, | |
15d9882c | 1367 | &osdc->client->msgr); |
f24e9980 SW |
1368 | if (IS_ERR(newmap)) { |
1369 | err = PTR_ERR(newmap); | |
1370 | goto bad; | |
1371 | } | |
30dc6381 | 1372 | BUG_ON(!newmap); |
f24e9980 SW |
1373 | if (newmap != osdc->osdmap) { |
1374 | ceph_osdmap_destroy(osdc->osdmap); | |
1375 | osdc->osdmap = newmap; | |
1376 | } | |
38d6453c | 1377 | kick_requests(osdc, 0); |
f24e9980 SW |
1378 | } else { |
1379 | dout("ignoring incremental map %u len %d\n", | |
1380 | epoch, maplen); | |
1381 | } | |
1382 | p = next; | |
1383 | nr_maps--; | |
1384 | } | |
1385 | if (newmap) | |
1386 | goto done; | |
1387 | ||
1388 | /* full maps */ | |
1389 | ceph_decode_32_safe(&p, end, nr_maps, bad); | |
1390 | dout(" %d full maps\n", nr_maps); | |
1391 | while (nr_maps) { | |
1392 | ceph_decode_need(&p, end, 2*sizeof(u32), bad); | |
c89136ea SW |
1393 | epoch = ceph_decode_32(&p); |
1394 | maplen = ceph_decode_32(&p); | |
f24e9980 SW |
1395 | ceph_decode_need(&p, end, maplen, bad); |
1396 | if (nr_maps > 1) { | |
1397 | dout("skipping non-latest full map %u len %d\n", | |
1398 | epoch, maplen); | |
1399 | } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { | |
1400 | dout("skipping full map %u len %d, " | |
1401 | "older than our %u\n", epoch, maplen, | |
1402 | osdc->osdmap->epoch); | |
1403 | } else { | |
38d6453c SW |
1404 | int skipped_map = 0; |
1405 | ||
f24e9980 SW |
1406 | dout("taking full map %u len %d\n", epoch, maplen); |
1407 | newmap = osdmap_decode(&p, p+maplen); | |
1408 | if (IS_ERR(newmap)) { | |
1409 | err = PTR_ERR(newmap); | |
1410 | goto bad; | |
1411 | } | |
30dc6381 | 1412 | BUG_ON(!newmap); |
f24e9980 SW |
1413 | oldmap = osdc->osdmap; |
1414 | osdc->osdmap = newmap; | |
38d6453c SW |
1415 | if (oldmap) { |
1416 | if (oldmap->epoch + 1 < newmap->epoch) | |
1417 | skipped_map = 1; | |
f24e9980 | 1418 | ceph_osdmap_destroy(oldmap); |
38d6453c SW |
1419 | } |
1420 | kick_requests(osdc, skipped_map); | |
f24e9980 SW |
1421 | } |
1422 | p += maplen; | |
1423 | nr_maps--; | |
1424 | } | |
1425 | ||
1426 | done: | |
1427 | downgrade_write(&osdc->map_sem); | |
1428 | ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); | |
cd634fb6 SW |
1429 | |
1430 | /* | |
1431 | * subscribe to subsequent osdmap updates if full to ensure | |
1432 | * we find out when we are no longer full and stop returning | |
1433 | * ENOSPC. | |
1434 | */ | |
1435 | if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) | |
1436 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1437 | ||
6f6c7006 | 1438 | send_queued(osdc); |
f24e9980 | 1439 | up_read(&osdc->map_sem); |
03066f23 | 1440 | wake_up_all(&osdc->client->auth_wq); |
f24e9980 SW |
1441 | return; |
1442 | ||
1443 | bad: | |
1444 | pr_err("osdc handle_map corrupt msg\n"); | |
9ec7cab1 | 1445 | ceph_msg_dump(msg); |
f24e9980 SW |
1446 | up_write(&osdc->map_sem); |
1447 | return; | |
1448 | } | |
1449 | ||
a40c4f10 YS |
1450 | /* |
1451 | * watch/notify callback event infrastructure | |
1452 | * | |
1453 | * These callbacks are used both for watch and notify operations. | |
1454 | */ | |
1455 | static void __release_event(struct kref *kref) | |
1456 | { | |
1457 | struct ceph_osd_event *event = | |
1458 | container_of(kref, struct ceph_osd_event, kref); | |
1459 | ||
1460 | dout("__release_event %p\n", event); | |
1461 | kfree(event); | |
1462 | } | |
1463 | ||
1464 | static void get_event(struct ceph_osd_event *event) | |
1465 | { | |
1466 | kref_get(&event->kref); | |
1467 | } | |
1468 | ||
1469 | void ceph_osdc_put_event(struct ceph_osd_event *event) | |
1470 | { | |
1471 | kref_put(&event->kref, __release_event); | |
1472 | } | |
1473 | EXPORT_SYMBOL(ceph_osdc_put_event); | |
1474 | ||
1475 | static void __insert_event(struct ceph_osd_client *osdc, | |
1476 | struct ceph_osd_event *new) | |
1477 | { | |
1478 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1479 | struct rb_node *parent = NULL; | |
1480 | struct ceph_osd_event *event = NULL; | |
1481 | ||
1482 | while (*p) { | |
1483 | parent = *p; | |
1484 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1485 | if (new->cookie < event->cookie) | |
1486 | p = &(*p)->rb_left; | |
1487 | else if (new->cookie > event->cookie) | |
1488 | p = &(*p)->rb_right; | |
1489 | else | |
1490 | BUG(); | |
1491 | } | |
1492 | ||
1493 | rb_link_node(&new->node, parent, p); | |
1494 | rb_insert_color(&new->node, &osdc->event_tree); | |
1495 | } | |
1496 | ||
1497 | static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, | |
1498 | u64 cookie) | |
1499 | { | |
1500 | struct rb_node **p = &osdc->event_tree.rb_node; | |
1501 | struct rb_node *parent = NULL; | |
1502 | struct ceph_osd_event *event = NULL; | |
1503 | ||
1504 | while (*p) { | |
1505 | parent = *p; | |
1506 | event = rb_entry(parent, struct ceph_osd_event, node); | |
1507 | if (cookie < event->cookie) | |
1508 | p = &(*p)->rb_left; | |
1509 | else if (cookie > event->cookie) | |
1510 | p = &(*p)->rb_right; | |
1511 | else | |
1512 | return event; | |
1513 | } | |
1514 | return NULL; | |
1515 | } | |
1516 | ||
1517 | static void __remove_event(struct ceph_osd_event *event) | |
1518 | { | |
1519 | struct ceph_osd_client *osdc = event->osdc; | |
1520 | ||
1521 | if (!RB_EMPTY_NODE(&event->node)) { | |
1522 | dout("__remove_event removed %p\n", event); | |
1523 | rb_erase(&event->node, &osdc->event_tree); | |
1524 | ceph_osdc_put_event(event); | |
1525 | } else { | |
1526 | dout("__remove_event didn't remove %p\n", event); | |
1527 | } | |
1528 | } | |
1529 | ||
1530 | int ceph_osdc_create_event(struct ceph_osd_client *osdc, | |
1531 | void (*event_cb)(u64, u64, u8, void *), | |
1532 | int one_shot, void *data, | |
1533 | struct ceph_osd_event **pevent) | |
1534 | { | |
1535 | struct ceph_osd_event *event; | |
1536 | ||
1537 | event = kmalloc(sizeof(*event), GFP_NOIO); | |
1538 | if (!event) | |
1539 | return -ENOMEM; | |
1540 | ||
1541 | dout("create_event %p\n", event); | |
1542 | event->cb = event_cb; | |
1543 | event->one_shot = one_shot; | |
1544 | event->data = data; | |
1545 | event->osdc = osdc; | |
1546 | INIT_LIST_HEAD(&event->osd_node); | |
3ee5234d | 1547 | RB_CLEAR_NODE(&event->node); |
a40c4f10 YS |
1548 | kref_init(&event->kref); /* one ref for us */ |
1549 | kref_get(&event->kref); /* one ref for the caller */ | |
1550 | init_completion(&event->completion); | |
1551 | ||
1552 | spin_lock(&osdc->event_lock); | |
1553 | event->cookie = ++osdc->event_count; | |
1554 | __insert_event(osdc, event); | |
1555 | spin_unlock(&osdc->event_lock); | |
1556 | ||
1557 | *pevent = event; | |
1558 | return 0; | |
1559 | } | |
1560 | EXPORT_SYMBOL(ceph_osdc_create_event); | |
1561 | ||
1562 | void ceph_osdc_cancel_event(struct ceph_osd_event *event) | |
1563 | { | |
1564 | struct ceph_osd_client *osdc = event->osdc; | |
1565 | ||
1566 | dout("cancel_event %p\n", event); | |
1567 | spin_lock(&osdc->event_lock); | |
1568 | __remove_event(event); | |
1569 | spin_unlock(&osdc->event_lock); | |
1570 | ceph_osdc_put_event(event); /* caller's */ | |
1571 | } | |
1572 | EXPORT_SYMBOL(ceph_osdc_cancel_event); | |
1573 | ||
1574 | ||
1575 | static void do_event_work(struct work_struct *work) | |
1576 | { | |
1577 | struct ceph_osd_event_work *event_work = | |
1578 | container_of(work, struct ceph_osd_event_work, work); | |
1579 | struct ceph_osd_event *event = event_work->event; | |
1580 | u64 ver = event_work->ver; | |
1581 | u64 notify_id = event_work->notify_id; | |
1582 | u8 opcode = event_work->opcode; | |
1583 | ||
1584 | dout("do_event_work completing %p\n", event); | |
1585 | event->cb(ver, notify_id, opcode, event->data); | |
1586 | complete(&event->completion); | |
1587 | dout("do_event_work completed %p\n", event); | |
1588 | ceph_osdc_put_event(event); | |
1589 | kfree(event_work); | |
1590 | } | |
1591 | ||
1592 | ||
1593 | /* | |
1594 | * Process osd watch notifications | |
1595 | */ | |
1596 | void handle_watch_notify(struct ceph_osd_client *osdc, struct ceph_msg *msg) | |
1597 | { | |
1598 | void *p, *end; | |
1599 | u8 proto_ver; | |
1600 | u64 cookie, ver, notify_id; | |
1601 | u8 opcode; | |
1602 | struct ceph_osd_event *event; | |
1603 | struct ceph_osd_event_work *event_work; | |
1604 | ||
1605 | p = msg->front.iov_base; | |
1606 | end = p + msg->front.iov_len; | |
1607 | ||
1608 | ceph_decode_8_safe(&p, end, proto_ver, bad); | |
1609 | ceph_decode_8_safe(&p, end, opcode, bad); | |
1610 | ceph_decode_64_safe(&p, end, cookie, bad); | |
1611 | ceph_decode_64_safe(&p, end, ver, bad); | |
1612 | ceph_decode_64_safe(&p, end, notify_id, bad); | |
1613 | ||
1614 | spin_lock(&osdc->event_lock); | |
1615 | event = __find_event(osdc, cookie); | |
1616 | if (event) { | |
1617 | get_event(event); | |
1618 | if (event->one_shot) | |
1619 | __remove_event(event); | |
1620 | } | |
1621 | spin_unlock(&osdc->event_lock); | |
1622 | dout("handle_watch_notify cookie %lld ver %lld event %p\n", | |
1623 | cookie, ver, event); | |
1624 | if (event) { | |
1625 | event_work = kmalloc(sizeof(*event_work), GFP_NOIO); | |
a40c4f10 YS |
1626 | if (!event_work) { |
1627 | dout("ERROR: could not allocate event_work\n"); | |
1628 | goto done_err; | |
1629 | } | |
6b0ae409 | 1630 | INIT_WORK(&event_work->work, do_event_work); |
a40c4f10 YS |
1631 | event_work->event = event; |
1632 | event_work->ver = ver; | |
1633 | event_work->notify_id = notify_id; | |
1634 | event_work->opcode = opcode; | |
1635 | if (!queue_work(osdc->notify_wq, &event_work->work)) { | |
1636 | dout("WARNING: failed to queue notify event work\n"); | |
1637 | goto done_err; | |
1638 | } | |
1639 | } | |
1640 | ||
1641 | return; | |
1642 | ||
1643 | done_err: | |
1644 | complete(&event->completion); | |
1645 | ceph_osdc_put_event(event); | |
1646 | return; | |
1647 | ||
1648 | bad: | |
1649 | pr_err("osdc handle_watch_notify corrupt msg\n"); | |
1650 | return; | |
1651 | } | |
1652 | ||
1653 | int ceph_osdc_wait_event(struct ceph_osd_event *event, unsigned long timeout) | |
1654 | { | |
1655 | int err; | |
1656 | ||
1657 | dout("wait_event %p\n", event); | |
1658 | err = wait_for_completion_interruptible_timeout(&event->completion, | |
1659 | timeout * HZ); | |
1660 | ceph_osdc_put_event(event); | |
1661 | if (err > 0) | |
1662 | err = 0; | |
1663 | dout("wait_event %p returns %d\n", event, err); | |
1664 | return err; | |
1665 | } | |
1666 | EXPORT_SYMBOL(ceph_osdc_wait_event); | |
1667 | ||
f24e9980 SW |
1668 | /* |
1669 | * Register request, send initial attempt. | |
1670 | */ | |
1671 | int ceph_osdc_start_request(struct ceph_osd_client *osdc, | |
1672 | struct ceph_osd_request *req, | |
1673 | bool nofail) | |
1674 | { | |
c1ea8823 | 1675 | int rc = 0; |
f24e9980 SW |
1676 | |
1677 | req->r_request->pages = req->r_pages; | |
1678 | req->r_request->nr_pages = req->r_num_pages; | |
68b4476b YS |
1679 | #ifdef CONFIG_BLOCK |
1680 | req->r_request->bio = req->r_bio; | |
1681 | #endif | |
c885837f | 1682 | req->r_request->trail = &req->r_trail; |
f24e9980 SW |
1683 | |
1684 | register_request(osdc, req); | |
1685 | ||
1686 | down_read(&osdc->map_sem); | |
1687 | mutex_lock(&osdc->request_mutex); | |
c1ea8823 SW |
1688 | /* |
1689 | * a racing kick_requests() may have sent the message for us | |
1690 | * while we dropped request_mutex above, so only send now if | |
1691 | * the request still han't been touched yet. | |
1692 | */ | |
1693 | if (req->r_sent == 0) { | |
38d6453c | 1694 | rc = __map_request(osdc, req, 0); |
9d6fcb08 SW |
1695 | if (rc < 0) { |
1696 | if (nofail) { | |
1697 | dout("osdc_start_request failed map, " | |
1698 | " will retry %lld\n", req->r_tid); | |
1699 | rc = 0; | |
1700 | } | |
234af26f | 1701 | goto out_unlock; |
9d6fcb08 | 1702 | } |
6f6c7006 SW |
1703 | if (req->r_osd == NULL) { |
1704 | dout("send_request %p no up osds in pg\n", req); | |
1705 | ceph_monc_request_next_osdmap(&osdc->client->monc); | |
1706 | } else { | |
56e925b6 | 1707 | __send_request(osdc, req); |
f24e9980 | 1708 | } |
56e925b6 | 1709 | rc = 0; |
f24e9980 | 1710 | } |
234af26f DC |
1711 | |
1712 | out_unlock: | |
f24e9980 SW |
1713 | mutex_unlock(&osdc->request_mutex); |
1714 | up_read(&osdc->map_sem); | |
1715 | return rc; | |
1716 | } | |
3d14c5d2 | 1717 | EXPORT_SYMBOL(ceph_osdc_start_request); |
f24e9980 SW |
1718 | |
1719 | /* | |
1720 | * wait for a request to complete | |
1721 | */ | |
1722 | int ceph_osdc_wait_request(struct ceph_osd_client *osdc, | |
1723 | struct ceph_osd_request *req) | |
1724 | { | |
1725 | int rc; | |
1726 | ||
1727 | rc = wait_for_completion_interruptible(&req->r_completion); | |
1728 | if (rc < 0) { | |
1729 | mutex_lock(&osdc->request_mutex); | |
1730 | __cancel_request(req); | |
529cfcc4 | 1731 | __unregister_request(osdc, req); |
f24e9980 | 1732 | mutex_unlock(&osdc->request_mutex); |
25845472 | 1733 | complete_request(req); |
529cfcc4 | 1734 | dout("wait_request tid %llu canceled/timed out\n", req->r_tid); |
f24e9980 SW |
1735 | return rc; |
1736 | } | |
1737 | ||
1738 | dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); | |
1739 | return req->r_result; | |
1740 | } | |
3d14c5d2 | 1741 | EXPORT_SYMBOL(ceph_osdc_wait_request); |
f24e9980 SW |
1742 | |
1743 | /* | |
1744 | * sync - wait for all in-flight requests to flush. avoid starvation. | |
1745 | */ | |
1746 | void ceph_osdc_sync(struct ceph_osd_client *osdc) | |
1747 | { | |
1748 | struct ceph_osd_request *req; | |
1749 | u64 last_tid, next_tid = 0; | |
1750 | ||
1751 | mutex_lock(&osdc->request_mutex); | |
1752 | last_tid = osdc->last_tid; | |
1753 | while (1) { | |
1754 | req = __lookup_request_ge(osdc, next_tid); | |
1755 | if (!req) | |
1756 | break; | |
1757 | if (req->r_tid > last_tid) | |
1758 | break; | |
1759 | ||
1760 | next_tid = req->r_tid + 1; | |
1761 | if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) | |
1762 | continue; | |
1763 | ||
1764 | ceph_osdc_get_request(req); | |
1765 | mutex_unlock(&osdc->request_mutex); | |
1766 | dout("sync waiting on tid %llu (last is %llu)\n", | |
1767 | req->r_tid, last_tid); | |
1768 | wait_for_completion(&req->r_safe_completion); | |
1769 | mutex_lock(&osdc->request_mutex); | |
1770 | ceph_osdc_put_request(req); | |
1771 | } | |
1772 | mutex_unlock(&osdc->request_mutex); | |
1773 | dout("sync done (thru tid %llu)\n", last_tid); | |
1774 | } | |
3d14c5d2 | 1775 | EXPORT_SYMBOL(ceph_osdc_sync); |
f24e9980 SW |
1776 | |
1777 | /* | |
1778 | * init, shutdown | |
1779 | */ | |
1780 | int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) | |
1781 | { | |
1782 | int err; | |
1783 | ||
1784 | dout("init\n"); | |
1785 | osdc->client = client; | |
1786 | osdc->osdmap = NULL; | |
1787 | init_rwsem(&osdc->map_sem); | |
1788 | init_completion(&osdc->map_waiters); | |
1789 | osdc->last_requested_map = 0; | |
1790 | mutex_init(&osdc->request_mutex); | |
f24e9980 SW |
1791 | osdc->last_tid = 0; |
1792 | osdc->osds = RB_ROOT; | |
f5a2041b | 1793 | INIT_LIST_HEAD(&osdc->osd_lru); |
f24e9980 | 1794 | osdc->requests = RB_ROOT; |
422d2cb8 | 1795 | INIT_LIST_HEAD(&osdc->req_lru); |
6f6c7006 SW |
1796 | INIT_LIST_HEAD(&osdc->req_unsent); |
1797 | INIT_LIST_HEAD(&osdc->req_notarget); | |
a40c4f10 | 1798 | INIT_LIST_HEAD(&osdc->req_linger); |
f24e9980 SW |
1799 | osdc->num_requests = 0; |
1800 | INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); | |
f5a2041b | 1801 | INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); |
a40c4f10 YS |
1802 | spin_lock_init(&osdc->event_lock); |
1803 | osdc->event_tree = RB_ROOT; | |
1804 | osdc->event_count = 0; | |
f5a2041b YS |
1805 | |
1806 | schedule_delayed_work(&osdc->osds_timeout_work, | |
3d14c5d2 | 1807 | round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); |
f24e9980 | 1808 | |
5f44f142 | 1809 | err = -ENOMEM; |
f24e9980 SW |
1810 | osdc->req_mempool = mempool_create_kmalloc_pool(10, |
1811 | sizeof(struct ceph_osd_request)); | |
1812 | if (!osdc->req_mempool) | |
5f44f142 | 1813 | goto out; |
f24e9980 | 1814 | |
d50b409f SW |
1815 | err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, |
1816 | OSD_OP_FRONT_LEN, 10, true, | |
4f48280e | 1817 | "osd_op"); |
f24e9980 | 1818 | if (err < 0) |
5f44f142 | 1819 | goto out_mempool; |
d50b409f | 1820 | err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, |
4f48280e SW |
1821 | OSD_OPREPLY_FRONT_LEN, 10, true, |
1822 | "osd_op_reply"); | |
c16e7869 SW |
1823 | if (err < 0) |
1824 | goto out_msgpool; | |
a40c4f10 YS |
1825 | |
1826 | osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); | |
1827 | if (IS_ERR(osdc->notify_wq)) { | |
1828 | err = PTR_ERR(osdc->notify_wq); | |
1829 | osdc->notify_wq = NULL; | |
1830 | goto out_msgpool; | |
1831 | } | |
f24e9980 | 1832 | return 0; |
5f44f142 | 1833 | |
c16e7869 SW |
1834 | out_msgpool: |
1835 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
5f44f142 SW |
1836 | out_mempool: |
1837 | mempool_destroy(osdc->req_mempool); | |
1838 | out: | |
1839 | return err; | |
f24e9980 | 1840 | } |
3d14c5d2 | 1841 | EXPORT_SYMBOL(ceph_osdc_init); |
f24e9980 SW |
1842 | |
1843 | void ceph_osdc_stop(struct ceph_osd_client *osdc) | |
1844 | { | |
a40c4f10 YS |
1845 | flush_workqueue(osdc->notify_wq); |
1846 | destroy_workqueue(osdc->notify_wq); | |
f24e9980 | 1847 | cancel_delayed_work_sync(&osdc->timeout_work); |
f5a2041b | 1848 | cancel_delayed_work_sync(&osdc->osds_timeout_work); |
f24e9980 SW |
1849 | if (osdc->osdmap) { |
1850 | ceph_osdmap_destroy(osdc->osdmap); | |
1851 | osdc->osdmap = NULL; | |
1852 | } | |
aca420bc | 1853 | remove_all_osds(osdc); |
f24e9980 SW |
1854 | mempool_destroy(osdc->req_mempool); |
1855 | ceph_msgpool_destroy(&osdc->msgpool_op); | |
c16e7869 | 1856 | ceph_msgpool_destroy(&osdc->msgpool_op_reply); |
f24e9980 | 1857 | } |
3d14c5d2 | 1858 | EXPORT_SYMBOL(ceph_osdc_stop); |
f24e9980 SW |
1859 | |
1860 | /* | |
1861 | * Read some contiguous pages. If we cross a stripe boundary, shorten | |
1862 | * *plen. Return number of bytes read, or error. | |
1863 | */ | |
1864 | int ceph_osdc_readpages(struct ceph_osd_client *osdc, | |
1865 | struct ceph_vino vino, struct ceph_file_layout *layout, | |
1866 | u64 off, u64 *plen, | |
1867 | u32 truncate_seq, u64 truncate_size, | |
b7495fc2 | 1868 | struct page **pages, int num_pages, int page_align) |
f24e9980 SW |
1869 | { |
1870 | struct ceph_osd_request *req; | |
1871 | int rc = 0; | |
1872 | ||
1873 | dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, | |
1874 | vino.snap, off, *plen); | |
1875 | req = ceph_osdc_new_request(osdc, layout, vino, off, plen, | |
1876 | CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, | |
1877 | NULL, 0, truncate_seq, truncate_size, NULL, | |
b7495fc2 | 1878 | false, 1, page_align); |
6816282d SW |
1879 | if (IS_ERR(req)) |
1880 | return PTR_ERR(req); | |
f24e9980 SW |
1881 | |
1882 | /* it may be a short read due to an object boundary */ | |
1883 | req->r_pages = pages; | |
f24e9980 | 1884 | |
b7495fc2 SW |
1885 | dout("readpages final extent is %llu~%llu (%d pages align %d)\n", |
1886 | off, *plen, req->r_num_pages, page_align); | |
f24e9980 SW |
1887 | |
1888 | rc = ceph_osdc_start_request(osdc, req, false); | |
1889 | if (!rc) | |
1890 | rc = ceph_osdc_wait_request(osdc, req); | |
1891 | ||
1892 | ceph_osdc_put_request(req); | |
1893 | dout("readpages result %d\n", rc); | |
1894 | return rc; | |
1895 | } | |
3d14c5d2 | 1896 | EXPORT_SYMBOL(ceph_osdc_readpages); |
f24e9980 SW |
1897 | |
1898 | /* | |
1899 | * do a synchronous write on N pages | |
1900 | */ | |
1901 | int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, | |
1902 | struct ceph_file_layout *layout, | |
1903 | struct ceph_snap_context *snapc, | |
1904 | u64 off, u64 len, | |
1905 | u32 truncate_seq, u64 truncate_size, | |
1906 | struct timespec *mtime, | |
1907 | struct page **pages, int num_pages, | |
1908 | int flags, int do_sync, bool nofail) | |
1909 | { | |
1910 | struct ceph_osd_request *req; | |
1911 | int rc = 0; | |
b7495fc2 | 1912 | int page_align = off & ~PAGE_MASK; |
f24e9980 SW |
1913 | |
1914 | BUG_ON(vino.snap != CEPH_NOSNAP); | |
1915 | req = ceph_osdc_new_request(osdc, layout, vino, off, &len, | |
1916 | CEPH_OSD_OP_WRITE, | |
1917 | flags | CEPH_OSD_FLAG_ONDISK | | |
1918 | CEPH_OSD_FLAG_WRITE, | |
1919 | snapc, do_sync, | |
1920 | truncate_seq, truncate_size, mtime, | |
b7495fc2 | 1921 | nofail, 1, page_align); |
6816282d SW |
1922 | if (IS_ERR(req)) |
1923 | return PTR_ERR(req); | |
f24e9980 SW |
1924 | |
1925 | /* it may be a short write due to an object boundary */ | |
1926 | req->r_pages = pages; | |
f24e9980 SW |
1927 | dout("writepages %llu~%llu (%d pages)\n", off, len, |
1928 | req->r_num_pages); | |
1929 | ||
1930 | rc = ceph_osdc_start_request(osdc, req, nofail); | |
1931 | if (!rc) | |
1932 | rc = ceph_osdc_wait_request(osdc, req); | |
1933 | ||
1934 | ceph_osdc_put_request(req); | |
1935 | if (rc == 0) | |
1936 | rc = len; | |
1937 | dout("writepages result %d\n", rc); | |
1938 | return rc; | |
1939 | } | |
3d14c5d2 | 1940 | EXPORT_SYMBOL(ceph_osdc_writepages); |
f24e9980 SW |
1941 | |
1942 | /* | |
1943 | * handle incoming message | |
1944 | */ | |
1945 | static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) | |
1946 | { | |
1947 | struct ceph_osd *osd = con->private; | |
32c895e7 | 1948 | struct ceph_osd_client *osdc; |
f24e9980 SW |
1949 | int type = le16_to_cpu(msg->hdr.type); |
1950 | ||
1951 | if (!osd) | |
4a32f93d | 1952 | goto out; |
32c895e7 | 1953 | osdc = osd->o_osdc; |
f24e9980 SW |
1954 | |
1955 | switch (type) { | |
1956 | case CEPH_MSG_OSD_MAP: | |
1957 | ceph_osdc_handle_map(osdc, msg); | |
1958 | break; | |
1959 | case CEPH_MSG_OSD_OPREPLY: | |
350b1c32 | 1960 | handle_reply(osdc, msg, con); |
f24e9980 | 1961 | break; |
a40c4f10 YS |
1962 | case CEPH_MSG_WATCH_NOTIFY: |
1963 | handle_watch_notify(osdc, msg); | |
1964 | break; | |
f24e9980 SW |
1965 | |
1966 | default: | |
1967 | pr_err("received unknown message type %d %s\n", type, | |
1968 | ceph_msg_type_name(type)); | |
1969 | } | |
4a32f93d | 1970 | out: |
f24e9980 SW |
1971 | ceph_msg_put(msg); |
1972 | } | |
1973 | ||
5b3a4db3 | 1974 | /* |
21b667f6 SW |
1975 | * lookup and return message for incoming reply. set up reply message |
1976 | * pages. | |
5b3a4db3 SW |
1977 | */ |
1978 | static struct ceph_msg *get_reply(struct ceph_connection *con, | |
2450418c YS |
1979 | struct ceph_msg_header *hdr, |
1980 | int *skip) | |
f24e9980 SW |
1981 | { |
1982 | struct ceph_osd *osd = con->private; | |
1983 | struct ceph_osd_client *osdc = osd->o_osdc; | |
2450418c | 1984 | struct ceph_msg *m; |
0547a9b3 | 1985 | struct ceph_osd_request *req; |
5b3a4db3 SW |
1986 | int front = le32_to_cpu(hdr->front_len); |
1987 | int data_len = le32_to_cpu(hdr->data_len); | |
0547a9b3 | 1988 | u64 tid; |
f24e9980 | 1989 | |
0547a9b3 YS |
1990 | tid = le64_to_cpu(hdr->tid); |
1991 | mutex_lock(&osdc->request_mutex); | |
1992 | req = __lookup_request(osdc, tid); | |
1993 | if (!req) { | |
1994 | *skip = 1; | |
1995 | m = NULL; | |
756a16a5 SW |
1996 | dout("get_reply unknown tid %llu from osd%d\n", tid, |
1997 | osd->o_osd); | |
0547a9b3 YS |
1998 | goto out; |
1999 | } | |
c16e7869 SW |
2000 | |
2001 | if (req->r_con_filling_msg) { | |
8921d114 | 2002 | dout("%s revoking msg %p from old con %p\n", __func__, |
c16e7869 | 2003 | req->r_reply, req->r_con_filling_msg); |
8921d114 | 2004 | ceph_msg_revoke_incoming(req->r_reply); |
0d47766f | 2005 | req->r_con_filling_msg->ops->put(req->r_con_filling_msg); |
6f46cb29 | 2006 | req->r_con_filling_msg = NULL; |
0547a9b3 YS |
2007 | } |
2008 | ||
c16e7869 SW |
2009 | if (front > req->r_reply->front.iov_len) { |
2010 | pr_warning("get_reply front %d > preallocated %d\n", | |
2011 | front, (int)req->r_reply->front.iov_len); | |
b61c2763 | 2012 | m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); |
a79832f2 | 2013 | if (!m) |
c16e7869 SW |
2014 | goto out; |
2015 | ceph_msg_put(req->r_reply); | |
2016 | req->r_reply = m; | |
2017 | } | |
2018 | m = ceph_msg_get(req->r_reply); | |
2019 | ||
0547a9b3 | 2020 | if (data_len > 0) { |
b7495fc2 | 2021 | int want = calc_pages_for(req->r_page_alignment, data_len); |
21b667f6 SW |
2022 | |
2023 | if (unlikely(req->r_num_pages < want)) { | |
9bb0ce2b SW |
2024 | pr_warning("tid %lld reply has %d bytes %d pages, we" |
2025 | " had only %d pages ready\n", tid, data_len, | |
2026 | want, req->r_num_pages); | |
0547a9b3 YS |
2027 | *skip = 1; |
2028 | ceph_msg_put(m); | |
a79832f2 | 2029 | m = NULL; |
21b667f6 | 2030 | goto out; |
0547a9b3 | 2031 | } |
21b667f6 SW |
2032 | m->pages = req->r_pages; |
2033 | m->nr_pages = req->r_num_pages; | |
c5c6b19d | 2034 | m->page_alignment = req->r_page_alignment; |
68b4476b YS |
2035 | #ifdef CONFIG_BLOCK |
2036 | m->bio = req->r_bio; | |
2037 | #endif | |
0547a9b3 | 2038 | } |
5b3a4db3 | 2039 | *skip = 0; |
0d47766f | 2040 | req->r_con_filling_msg = con->ops->get(con); |
c16e7869 | 2041 | dout("get_reply tid %lld %p\n", tid, m); |
0547a9b3 YS |
2042 | |
2043 | out: | |
2044 | mutex_unlock(&osdc->request_mutex); | |
2450418c | 2045 | return m; |
5b3a4db3 SW |
2046 | |
2047 | } | |
2048 | ||
2049 | static struct ceph_msg *alloc_msg(struct ceph_connection *con, | |
2050 | struct ceph_msg_header *hdr, | |
2051 | int *skip) | |
2052 | { | |
2053 | struct ceph_osd *osd = con->private; | |
2054 | int type = le16_to_cpu(hdr->type); | |
2055 | int front = le32_to_cpu(hdr->front_len); | |
2056 | ||
1c20f2d2 | 2057 | *skip = 0; |
5b3a4db3 SW |
2058 | switch (type) { |
2059 | case CEPH_MSG_OSD_MAP: | |
a40c4f10 | 2060 | case CEPH_MSG_WATCH_NOTIFY: |
b61c2763 | 2061 | return ceph_msg_new(type, front, GFP_NOFS, false); |
5b3a4db3 SW |
2062 | case CEPH_MSG_OSD_OPREPLY: |
2063 | return get_reply(con, hdr, skip); | |
2064 | default: | |
2065 | pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, | |
2066 | osd->o_osd); | |
2067 | *skip = 1; | |
2068 | return NULL; | |
2069 | } | |
f24e9980 SW |
2070 | } |
2071 | ||
2072 | /* | |
2073 | * Wrappers to refcount containing ceph_osd struct | |
2074 | */ | |
2075 | static struct ceph_connection *get_osd_con(struct ceph_connection *con) | |
2076 | { | |
2077 | struct ceph_osd *osd = con->private; | |
2078 | if (get_osd(osd)) | |
2079 | return con; | |
2080 | return NULL; | |
2081 | } | |
2082 | ||
2083 | static void put_osd_con(struct ceph_connection *con) | |
2084 | { | |
2085 | struct ceph_osd *osd = con->private; | |
2086 | put_osd(osd); | |
2087 | } | |
2088 | ||
4e7a5dcd SW |
2089 | /* |
2090 | * authentication | |
2091 | */ | |
a3530df3 AE |
2092 | /* |
2093 | * Note: returned pointer is the address of a structure that's | |
2094 | * managed separately. Caller must *not* attempt to free it. | |
2095 | */ | |
2096 | static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, | |
8f43fb53 | 2097 | int *proto, int force_new) |
4e7a5dcd SW |
2098 | { |
2099 | struct ceph_osd *o = con->private; | |
2100 | struct ceph_osd_client *osdc = o->o_osdc; | |
2101 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
74f1869f | 2102 | struct ceph_auth_handshake *auth = &o->o_auth; |
4e7a5dcd | 2103 | |
74f1869f | 2104 | if (force_new && auth->authorizer) { |
a255651d AE |
2105 | if (ac->ops && ac->ops->destroy_authorizer) |
2106 | ac->ops->destroy_authorizer(ac, auth->authorizer); | |
74f1869f AE |
2107 | auth->authorizer = NULL; |
2108 | } | |
a255651d | 2109 | if (!auth->authorizer && ac->ops && ac->ops->create_authorizer) { |
a3530df3 AE |
2110 | int ret = ac->ops->create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, |
2111 | auth); | |
4e7a5dcd | 2112 | if (ret) |
a3530df3 | 2113 | return ERR_PTR(ret); |
4e7a5dcd | 2114 | } |
4e7a5dcd | 2115 | *proto = ac->protocol; |
74f1869f | 2116 | |
a3530df3 | 2117 | return auth; |
4e7a5dcd SW |
2118 | } |
2119 | ||
2120 | ||
2121 | static int verify_authorizer_reply(struct ceph_connection *con, int len) | |
2122 | { | |
2123 | struct ceph_osd *o = con->private; | |
2124 | struct ceph_osd_client *osdc = o->o_osdc; | |
2125 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2126 | ||
a255651d AE |
2127 | /* |
2128 | * XXX If ac->ops or ac->ops->verify_authorizer_reply is null, | |
2129 | * XXX which do we do: succeed or fail? | |
2130 | */ | |
6c4a1915 | 2131 | return ac->ops->verify_authorizer_reply(ac, o->o_auth.authorizer, len); |
4e7a5dcd SW |
2132 | } |
2133 | ||
9bd2e6f8 SW |
2134 | static int invalidate_authorizer(struct ceph_connection *con) |
2135 | { | |
2136 | struct ceph_osd *o = con->private; | |
2137 | struct ceph_osd_client *osdc = o->o_osdc; | |
2138 | struct ceph_auth_client *ac = osdc->client->monc.auth; | |
2139 | ||
a255651d | 2140 | if (ac->ops && ac->ops->invalidate_authorizer) |
9bd2e6f8 SW |
2141 | ac->ops->invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); |
2142 | ||
2143 | return ceph_monc_validate_auth(&osdc->client->monc); | |
2144 | } | |
4e7a5dcd | 2145 | |
9e32789f | 2146 | static const struct ceph_connection_operations osd_con_ops = { |
f24e9980 SW |
2147 | .get = get_osd_con, |
2148 | .put = put_osd_con, | |
2149 | .dispatch = dispatch, | |
4e7a5dcd SW |
2150 | .get_authorizer = get_authorizer, |
2151 | .verify_authorizer_reply = verify_authorizer_reply, | |
9bd2e6f8 | 2152 | .invalidate_authorizer = invalidate_authorizer, |
f24e9980 | 2153 | .alloc_msg = alloc_msg, |
81b024e7 | 2154 | .fault = osd_reset, |
f24e9980 | 2155 | }; |