1 2 #include <linux/ceph/ceph_debug.h> 3 4 #include <linux/module.h> 5 #include <linux/err.h> 6 #include <linux/highmem.h> 7 #include <linux/mm.h> 8 #include <linux/pagemap.h> 9 #include <linux/slab.h> 10 #include <linux/uaccess.h> 11 #ifdef CONFIG_BLOCK 12 #include <linux/bio.h> 13 #endif 14 15 #include <linux/ceph/libceph.h> 16 #include <linux/ceph/osd_client.h> 17 #include <linux/ceph/messenger.h> 18 #include <linux/ceph/decode.h> 19 #include <linux/ceph/auth.h> 20 #include <linux/ceph/pagelist.h> 21 22 #define OSD_OP_FRONT_LEN 4096 23 #define OSD_OPREPLY_FRONT_LEN 512 24 25 static struct kmem_cache *ceph_osd_request_cache; 26 27 static const struct ceph_connection_operations osd_con_ops; 28 29 static void __send_queued(struct ceph_osd_client *osdc); 30 static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); 31 static void __register_request(struct ceph_osd_client *osdc, 32 struct ceph_osd_request *req); 33 static void __unregister_linger_request(struct ceph_osd_client *osdc, 34 struct ceph_osd_request *req); 35 static void __send_request(struct ceph_osd_client *osdc, 36 struct ceph_osd_request *req); 37 38 /* 39 * Implement client access to distributed object storage cluster. 40 * 41 * All data objects are stored within a cluster/cloud of OSDs, or 42 * "object storage devices." (Note that Ceph OSDs have _nothing_ to 43 * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 44 * remote daemons serving up and coordinating consistent and safe 45 * access to storage. 46 * 47 * Cluster membership and the mapping of data objects onto storage devices 48 * are described by the osd map. 49 * 50 * We keep track of pending OSD requests (read, write), resubmit 51 * requests to different OSDs when the cluster topology/data layout 52 * change, or retry the affected requests when the communications 53 * channel with an OSD is reset. 54 */ 55 56 /* 57 * calculate the mapping of a file extent onto an object, and fill out the 58 * request accordingly. shorten extent as necessary if it crosses an 59 * object boundary. 60 * 61 * fill osd op in request message. 62 */ 63 static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 64 u64 *objnum, u64 *objoff, u64 *objlen) 65 { 66 u64 orig_len = *plen; 67 int r; 68 69 /* object extent? */ 70 r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, 71 objoff, objlen); 72 if (r < 0) 73 return r; 74 if (*objlen < orig_len) { 75 *plen = *objlen; 76 dout(" skipping last %llu, final file extent %llu~%llu\n", 77 orig_len - *plen, off, *plen); 78 } 79 80 dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); 81 82 return 0; 83 } 84 85 static void ceph_osd_data_init(struct ceph_osd_data *osd_data) 86 { 87 memset(osd_data, 0, sizeof (*osd_data)); 88 osd_data->type = CEPH_OSD_DATA_TYPE_NONE; 89 } 90 91 static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, 92 struct page **pages, u64 length, u32 alignment, 93 bool pages_from_pool, bool own_pages) 94 { 95 osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 96 osd_data->pages = pages; 97 osd_data->length = length; 98 osd_data->alignment = alignment; 99 osd_data->pages_from_pool = pages_from_pool; 100 osd_data->own_pages = own_pages; 101 } 102 103 static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, 104 struct ceph_pagelist *pagelist) 105 { 106 osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; 107 osd_data->pagelist = pagelist; 108 } 109 110 #ifdef CONFIG_BLOCK 111 static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 112 struct bio *bio, size_t bio_length) 113 { 114 osd_data->type = CEPH_OSD_DATA_TYPE_BIO; 115 osd_data->bio = bio; 116 osd_data->bio_length = bio_length; 117 } 118 #endif /* CONFIG_BLOCK */ 119 120 #define osd_req_op_data(oreq, whch, typ, fld) \ 121 ({ \ 122 BUG_ON(whch >= (oreq)->r_num_ops); \ 123 &(oreq)->r_ops[whch].typ.fld; \ 124 }) 125 126 static struct ceph_osd_data * 127 osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) 128 { 129 BUG_ON(which >= osd_req->r_num_ops); 130 131 return &osd_req->r_ops[which].raw_data_in; 132 } 133 134 struct ceph_osd_data * 135 osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, 136 unsigned int which) 137 { 138 return osd_req_op_data(osd_req, which, extent, osd_data); 139 } 140 EXPORT_SYMBOL(osd_req_op_extent_osd_data); 141 142 struct ceph_osd_data * 143 osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, 144 unsigned int which) 145 { 146 return osd_req_op_data(osd_req, which, cls, response_data); 147 } 148 EXPORT_SYMBOL(osd_req_op_cls_response_data); /* ??? */ 149 150 void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 151 unsigned int which, struct page **pages, 152 u64 length, u32 alignment, 153 bool pages_from_pool, bool own_pages) 154 { 155 struct ceph_osd_data *osd_data; 156 157 osd_data = osd_req_op_raw_data_in(osd_req, which); 158 ceph_osd_data_pages_init(osd_data, pages, length, alignment, 159 pages_from_pool, own_pages); 160 } 161 EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 162 163 void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 164 unsigned int which, struct page **pages, 165 u64 length, u32 alignment, 166 bool pages_from_pool, bool own_pages) 167 { 168 struct ceph_osd_data *osd_data; 169 170 osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 171 ceph_osd_data_pages_init(osd_data, pages, length, alignment, 172 pages_from_pool, own_pages); 173 } 174 EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 175 176 void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 177 unsigned int which, struct ceph_pagelist *pagelist) 178 { 179 struct ceph_osd_data *osd_data; 180 181 osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 182 ceph_osd_data_pagelist_init(osd_data, pagelist); 183 } 184 EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 185 186 #ifdef CONFIG_BLOCK 187 void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 188 unsigned int which, struct bio *bio, size_t bio_length) 189 { 190 struct ceph_osd_data *osd_data; 191 192 osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 193 ceph_osd_data_bio_init(osd_data, bio, bio_length); 194 } 195 EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 196 #endif /* CONFIG_BLOCK */ 197 198 static void osd_req_op_cls_request_info_pagelist( 199 struct ceph_osd_request *osd_req, 200 unsigned int which, struct ceph_pagelist *pagelist) 201 { 202 struct ceph_osd_data *osd_data; 203 204 osd_data = osd_req_op_data(osd_req, which, cls, request_info); 205 ceph_osd_data_pagelist_init(osd_data, pagelist); 206 } 207 208 void osd_req_op_cls_request_data_pagelist( 209 struct ceph_osd_request *osd_req, 210 unsigned int which, struct ceph_pagelist *pagelist) 211 { 212 struct ceph_osd_data *osd_data; 213 214 osd_data = osd_req_op_data(osd_req, which, cls, request_data); 215 ceph_osd_data_pagelist_init(osd_data, pagelist); 216 } 217 EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 218 219 void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 220 unsigned int which, struct page **pages, u64 length, 221 u32 alignment, bool pages_from_pool, bool own_pages) 222 { 223 struct ceph_osd_data *osd_data; 224 225 osd_data = osd_req_op_data(osd_req, which, cls, request_data); 226 ceph_osd_data_pages_init(osd_data, pages, length, alignment, 227 pages_from_pool, own_pages); 228 } 229 EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 230 231 void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 232 unsigned int which, struct page **pages, u64 length, 233 u32 alignment, bool pages_from_pool, bool own_pages) 234 { 235 struct ceph_osd_data *osd_data; 236 237 osd_data = osd_req_op_data(osd_req, which, cls, response_data); 238 ceph_osd_data_pages_init(osd_data, pages, length, alignment, 239 pages_from_pool, own_pages); 240 } 241 EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 242 243 static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 244 { 245 switch (osd_data->type) { 246 case CEPH_OSD_DATA_TYPE_NONE: 247 return 0; 248 case CEPH_OSD_DATA_TYPE_PAGES: 249 return osd_data->length; 250 case CEPH_OSD_DATA_TYPE_PAGELIST: 251 return (u64)osd_data->pagelist->length; 252 #ifdef CONFIG_BLOCK 253 case CEPH_OSD_DATA_TYPE_BIO: 254 return (u64)osd_data->bio_length; 255 #endif /* CONFIG_BLOCK */ 256 default: 257 WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 258 return 0; 259 } 260 } 261 262 static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 263 { 264 if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 265 int num_pages; 266 267 num_pages = calc_pages_for((u64)osd_data->alignment, 268 (u64)osd_data->length); 269 ceph_release_page_vector(osd_data->pages, num_pages); 270 } 271 ceph_osd_data_init(osd_data); 272 } 273 274 static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 275 unsigned int which) 276 { 277 struct ceph_osd_req_op *op; 278 279 BUG_ON(which >= osd_req->r_num_ops); 280 op = &osd_req->r_ops[which]; 281 282 switch (op->op) { 283 case CEPH_OSD_OP_READ: 284 case CEPH_OSD_OP_WRITE: 285 ceph_osd_data_release(&op->extent.osd_data); 286 break; 287 case CEPH_OSD_OP_CALL: 288 ceph_osd_data_release(&op->cls.request_info); 289 ceph_osd_data_release(&op->cls.request_data); 290 ceph_osd_data_release(&op->cls.response_data); 291 break; 292 default: 293 break; 294 } 295 } 296 297 /* 298 * requests 299 */ 300 void ceph_osdc_release_request(struct kref *kref) 301 { 302 struct ceph_osd_request *req; 303 unsigned int which; 304 305 req = container_of(kref, struct ceph_osd_request, r_kref); 306 if (req->r_request) 307 ceph_msg_put(req->r_request); 308 if (req->r_reply) { 309 ceph_msg_revoke_incoming(req->r_reply); 310 ceph_msg_put(req->r_reply); 311 } 312 313 for (which = 0; which < req->r_num_ops; which++) 314 osd_req_op_data_release(req, which); 315 316 ceph_put_snap_context(req->r_snapc); 317 if (req->r_mempool) 318 mempool_free(req, req->r_osdc->req_mempool); 319 else 320 kmem_cache_free(ceph_osd_request_cache, req); 321 322 } 323 EXPORT_SYMBOL(ceph_osdc_release_request); 324 325 struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 326 struct ceph_snap_context *snapc, 327 unsigned int num_ops, 328 bool use_mempool, 329 gfp_t gfp_flags) 330 { 331 struct ceph_osd_request *req; 332 struct ceph_msg *msg; 333 size_t msg_size; 334 335 BUILD_BUG_ON(CEPH_OSD_MAX_OP > U16_MAX); 336 BUG_ON(num_ops > CEPH_OSD_MAX_OP); 337 338 msg_size = 4 + 4 + 8 + 8 + 4+8; 339 msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 340 msg_size += 1 + 8 + 4 + 4; /* pg_t */ 341 msg_size += 4 + MAX_OBJ_NAME_SIZE; 342 msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); 343 msg_size += 8; /* snapid */ 344 msg_size += 8; /* snap_seq */ 345 msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ 346 msg_size += 4; 347 348 if (use_mempool) { 349 req = mempool_alloc(osdc->req_mempool, gfp_flags); 350 memset(req, 0, sizeof(*req)); 351 } else { 352 req = kmem_cache_zalloc(ceph_osd_request_cache, gfp_flags); 353 } 354 if (req == NULL) 355 return NULL; 356 357 req->r_osdc = osdc; 358 req->r_mempool = use_mempool; 359 req->r_num_ops = num_ops; 360 361 kref_init(&req->r_kref); 362 init_completion(&req->r_completion); 363 init_completion(&req->r_safe_completion); 364 RB_CLEAR_NODE(&req->r_node); 365 INIT_LIST_HEAD(&req->r_unsafe_item); 366 INIT_LIST_HEAD(&req->r_linger_item); 367 INIT_LIST_HEAD(&req->r_linger_osd); 368 INIT_LIST_HEAD(&req->r_req_lru_item); 369 INIT_LIST_HEAD(&req->r_osd_item); 370 371 /* create reply message */ 372 if (use_mempool) 373 msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 374 else 375 msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 376 OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 377 if (!msg) { 378 ceph_osdc_put_request(req); 379 return NULL; 380 } 381 req->r_reply = msg; 382 383 /* create request message; allow space for oid */ 384 if (use_mempool) 385 msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 386 else 387 msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 388 if (!msg) { 389 ceph_osdc_put_request(req); 390 return NULL; 391 } 392 393 memset(msg->front.iov_base, 0, msg->front.iov_len); 394 395 req->r_request = msg; 396 397 return req; 398 } 399 EXPORT_SYMBOL(ceph_osdc_alloc_request); 400 401 static bool osd_req_opcode_valid(u16 opcode) 402 { 403 switch (opcode) { 404 case CEPH_OSD_OP_READ: 405 case CEPH_OSD_OP_STAT: 406 case CEPH_OSD_OP_MAPEXT: 407 case CEPH_OSD_OP_MASKTRUNC: 408 case CEPH_OSD_OP_SPARSE_READ: 409 case CEPH_OSD_OP_NOTIFY: 410 case CEPH_OSD_OP_NOTIFY_ACK: 411 case CEPH_OSD_OP_ASSERT_VER: 412 case CEPH_OSD_OP_WRITE: 413 case CEPH_OSD_OP_WRITEFULL: 414 case CEPH_OSD_OP_TRUNCATE: 415 case CEPH_OSD_OP_ZERO: 416 case CEPH_OSD_OP_DELETE: 417 case CEPH_OSD_OP_APPEND: 418 case CEPH_OSD_OP_STARTSYNC: 419 case CEPH_OSD_OP_SETTRUNC: 420 case CEPH_OSD_OP_TRIMTRUNC: 421 case CEPH_OSD_OP_TMAPUP: 422 case CEPH_OSD_OP_TMAPPUT: 423 case CEPH_OSD_OP_TMAPGET: 424 case CEPH_OSD_OP_CREATE: 425 case CEPH_OSD_OP_ROLLBACK: 426 case CEPH_OSD_OP_WATCH: 427 case CEPH_OSD_OP_OMAPGETKEYS: 428 case CEPH_OSD_OP_OMAPGETVALS: 429 case CEPH_OSD_OP_OMAPGETHEADER: 430 case CEPH_OSD_OP_OMAPGETVALSBYKEYS: 431 case CEPH_OSD_OP_OMAPSETVALS: 432 case CEPH_OSD_OP_OMAPSETHEADER: 433 case CEPH_OSD_OP_OMAPCLEAR: 434 case CEPH_OSD_OP_OMAPRMKEYS: 435 case CEPH_OSD_OP_OMAP_CMP: 436 case CEPH_OSD_OP_CLONERANGE: 437 case CEPH_OSD_OP_ASSERT_SRC_VERSION: 438 case CEPH_OSD_OP_SRC_CMPXATTR: 439 case CEPH_OSD_OP_GETXATTR: 440 case CEPH_OSD_OP_GETXATTRS: 441 case CEPH_OSD_OP_CMPXATTR: 442 case CEPH_OSD_OP_SETXATTR: 443 case CEPH_OSD_OP_SETXATTRS: 444 case CEPH_OSD_OP_RESETXATTRS: 445 case CEPH_OSD_OP_RMXATTR: 446 case CEPH_OSD_OP_PULL: 447 case CEPH_OSD_OP_PUSH: 448 case CEPH_OSD_OP_BALANCEREADS: 449 case CEPH_OSD_OP_UNBALANCEREADS: 450 case CEPH_OSD_OP_SCRUB: 451 case CEPH_OSD_OP_SCRUB_RESERVE: 452 case CEPH_OSD_OP_SCRUB_UNRESERVE: 453 case CEPH_OSD_OP_SCRUB_STOP: 454 case CEPH_OSD_OP_SCRUB_MAP: 455 case CEPH_OSD_OP_WRLOCK: 456 case CEPH_OSD_OP_WRUNLOCK: 457 case CEPH_OSD_OP_RDLOCK: 458 case CEPH_OSD_OP_RDUNLOCK: 459 case CEPH_OSD_OP_UPLOCK: 460 case CEPH_OSD_OP_DNLOCK: 461 case CEPH_OSD_OP_CALL: 462 case CEPH_OSD_OP_PGLS: 463 case CEPH_OSD_OP_PGLS_FILTER: 464 return true; 465 default: 466 return false; 467 } 468 } 469 470 /* 471 * This is an osd op init function for opcodes that have no data or 472 * other information associated with them. It also serves as a 473 * common init routine for all the other init functions, below. 474 */ 475 static struct ceph_osd_req_op * 476 _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 477 u16 opcode) 478 { 479 struct ceph_osd_req_op *op; 480 481 BUG_ON(which >= osd_req->r_num_ops); 482 BUG_ON(!osd_req_opcode_valid(opcode)); 483 484 op = &osd_req->r_ops[which]; 485 memset(op, 0, sizeof (*op)); 486 op->op = opcode; 487 488 return op; 489 } 490 491 void osd_req_op_init(struct ceph_osd_request *osd_req, 492 unsigned int which, u16 opcode) 493 { 494 (void)_osd_req_op_init(osd_req, which, opcode); 495 } 496 EXPORT_SYMBOL(osd_req_op_init); 497 498 void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 499 unsigned int which, u16 opcode, 500 u64 offset, u64 length, 501 u64 truncate_size, u32 truncate_seq) 502 { 503 struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 504 size_t payload_len = 0; 505 506 BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); 507 508 op->extent.offset = offset; 509 op->extent.length = length; 510 op->extent.truncate_size = truncate_size; 511 op->extent.truncate_seq = truncate_seq; 512 if (opcode == CEPH_OSD_OP_WRITE) 513 payload_len += length; 514 515 op->payload_len = payload_len; 516 } 517 EXPORT_SYMBOL(osd_req_op_extent_init); 518 519 void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 520 unsigned int which, u64 length) 521 { 522 struct ceph_osd_req_op *op; 523 u64 previous; 524 525 BUG_ON(which >= osd_req->r_num_ops); 526 op = &osd_req->r_ops[which]; 527 previous = op->extent.length; 528 529 if (length == previous) 530 return; /* Nothing to do */ 531 BUG_ON(length > previous); 532 533 op->extent.length = length; 534 op->payload_len -= previous - length; 535 } 536 EXPORT_SYMBOL(osd_req_op_extent_update); 537 538 void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 539 u16 opcode, const char *class, const char *method) 540 { 541 struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 542 struct ceph_pagelist *pagelist; 543 size_t payload_len = 0; 544 size_t size; 545 546 BUG_ON(opcode != CEPH_OSD_OP_CALL); 547 548 pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 549 BUG_ON(!pagelist); 550 ceph_pagelist_init(pagelist); 551 552 op->cls.class_name = class; 553 size = strlen(class); 554 BUG_ON(size > (size_t) U8_MAX); 555 op->cls.class_len = size; 556 ceph_pagelist_append(pagelist, class, size); 557 payload_len += size; 558 559 op->cls.method_name = method; 560 size = strlen(method); 561 BUG_ON(size > (size_t) U8_MAX); 562 op->cls.method_len = size; 563 ceph_pagelist_append(pagelist, method, size); 564 payload_len += size; 565 566 osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 567 568 op->cls.argc = 0; /* currently unused */ 569 570 op->payload_len = payload_len; 571 } 572 EXPORT_SYMBOL(osd_req_op_cls_init); 573 574 void osd_req_op_watch_init(struct ceph_osd_request *osd_req, 575 unsigned int which, u16 opcode, 576 u64 cookie, u64 version, int flag) 577 { 578 struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 579 580 BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 581 582 op->watch.cookie = cookie; 583 op->watch.ver = version; 584 if (opcode == CEPH_OSD_OP_WATCH && flag) 585 op->watch.flag = (u8)1; 586 } 587 EXPORT_SYMBOL(osd_req_op_watch_init); 588 589 static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 590 struct ceph_osd_data *osd_data) 591 { 592 u64 length = ceph_osd_data_length(osd_data); 593 594 if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 595 BUG_ON(length > (u64) SIZE_MAX); 596 if (length) 597 ceph_msg_data_add_pages(msg, osd_data->pages, 598 length, osd_data->alignment); 599 } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 600 BUG_ON(!length); 601 ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 602 #ifdef CONFIG_BLOCK 603 } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 604 ceph_msg_data_add_bio(msg, osd_data->bio, length); 605 #endif 606 } else { 607 BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 608 } 609 } 610 611 static u64 osd_req_encode_op(struct ceph_osd_request *req, 612 struct ceph_osd_op *dst, unsigned int which) 613 { 614 struct ceph_osd_req_op *src; 615 struct ceph_osd_data *osd_data; 616 u64 request_data_len = 0; 617 u64 data_length; 618 619 BUG_ON(which >= req->r_num_ops); 620 src = &req->r_ops[which]; 621 if (WARN_ON(!osd_req_opcode_valid(src->op))) { 622 pr_err("unrecognized osd opcode %d\n", src->op); 623 624 return 0; 625 } 626 627 switch (src->op) { 628 case CEPH_OSD_OP_STAT: 629 osd_data = &src->raw_data_in; 630 ceph_osdc_msg_data_add(req->r_reply, osd_data); 631 break; 632 case CEPH_OSD_OP_READ: 633 case CEPH_OSD_OP_WRITE: 634 if (src->op == CEPH_OSD_OP_WRITE) 635 request_data_len = src->extent.length; 636 dst->extent.offset = cpu_to_le64(src->extent.offset); 637 dst->extent.length = cpu_to_le64(src->extent.length); 638 dst->extent.truncate_size = 639 cpu_to_le64(src->extent.truncate_size); 640 dst->extent.truncate_seq = 641 cpu_to_le32(src->extent.truncate_seq); 642 osd_data = &src->extent.osd_data; 643 if (src->op == CEPH_OSD_OP_WRITE) 644 ceph_osdc_msg_data_add(req->r_request, osd_data); 645 else 646 ceph_osdc_msg_data_add(req->r_reply, osd_data); 647 break; 648 case CEPH_OSD_OP_CALL: 649 dst->cls.class_len = src->cls.class_len; 650 dst->cls.method_len = src->cls.method_len; 651 osd_data = &src->cls.request_info; 652 ceph_osdc_msg_data_add(req->r_request, osd_data); 653 BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); 654 request_data_len = osd_data->pagelist->length; 655 656 osd_data = &src->cls.request_data; 657 data_length = ceph_osd_data_length(osd_data); 658 if (data_length) { 659 BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); 660 dst->cls.indata_len = cpu_to_le32(data_length); 661 ceph_osdc_msg_data_add(req->r_request, osd_data); 662 src->payload_len += data_length; 663 request_data_len += data_length; 664 } 665 osd_data = &src->cls.response_data; 666 ceph_osdc_msg_data_add(req->r_reply, osd_data); 667 break; 668 case CEPH_OSD_OP_STARTSYNC: 669 break; 670 case CEPH_OSD_OP_NOTIFY_ACK: 671 case CEPH_OSD_OP_WATCH: 672 dst->watch.cookie = cpu_to_le64(src->watch.cookie); 673 dst->watch.ver = cpu_to_le64(src->watch.ver); 674 dst->watch.flag = src->watch.flag; 675 break; 676 default: 677 pr_err("unsupported osd opcode %s\n", 678 ceph_osd_op_name(src->op)); 679 WARN_ON(1); 680 681 return 0; 682 } 683 dst->op = cpu_to_le16(src->op); 684 dst->payload_len = cpu_to_le32(src->payload_len); 685 686 return request_data_len; 687 } 688 689 /* 690 * build new request AND message, calculate layout, and adjust file 691 * extent as needed. 692 * 693 * if the file was recently truncated, we include information about its 694 * old and new size so that the object can be updated appropriately. (we 695 * avoid synchronously deleting truncated objects because it's slow.) 696 * 697 * if @do_sync, include a 'startsync' command so that the osd will flush 698 * data quickly. 699 */ 700 struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 701 struct ceph_file_layout *layout, 702 struct ceph_vino vino, 703 u64 off, u64 *plen, int num_ops, 704 int opcode, int flags, 705 struct ceph_snap_context *snapc, 706 u32 truncate_seq, 707 u64 truncate_size, 708 bool use_mempool) 709 { 710 struct ceph_osd_request *req; 711 u64 objnum = 0; 712 u64 objoff = 0; 713 u64 objlen = 0; 714 u32 object_size; 715 u64 object_base; 716 int r; 717 718 BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); 719 720 req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 721 GFP_NOFS); 722 if (!req) 723 return ERR_PTR(-ENOMEM); 724 725 req->r_flags = flags; 726 727 /* calculate max write size */ 728 r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 729 if (r < 0) { 730 ceph_osdc_put_request(req); 731 return ERR_PTR(r); 732 } 733 734 object_size = le32_to_cpu(layout->fl_object_size); 735 object_base = off - objoff; 736 if (truncate_size <= object_base) { 737 truncate_size = 0; 738 } else { 739 truncate_size -= object_base; 740 if (truncate_size > object_size) 741 truncate_size = object_size; 742 } 743 744 osd_req_op_extent_init(req, 0, opcode, objoff, objlen, 745 truncate_size, truncate_seq); 746 747 /* 748 * A second op in the ops array means the caller wants to 749 * also issue a include a 'startsync' command so that the 750 * osd will flush data quickly. 751 */ 752 if (num_ops > 1) 753 osd_req_op_init(req, 1, CEPH_OSD_OP_STARTSYNC); 754 755 req->r_file_layout = *layout; /* keep a copy */ 756 757 snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", 758 vino.ino, objnum); 759 req->r_oid_len = strlen(req->r_oid); 760 761 return req; 762 } 763 EXPORT_SYMBOL(ceph_osdc_new_request); 764 765 /* 766 * We keep osd requests in an rbtree, sorted by ->r_tid. 767 */ 768 static void __insert_request(struct ceph_osd_client *osdc, 769 struct ceph_osd_request *new) 770 { 771 struct rb_node **p = &osdc->requests.rb_node; 772 struct rb_node *parent = NULL; 773 struct ceph_osd_request *req = NULL; 774 775 while (*p) { 776 parent = *p; 777 req = rb_entry(parent, struct ceph_osd_request, r_node); 778 if (new->r_tid < req->r_tid) 779 p = &(*p)->rb_left; 780 else if (new->r_tid > req->r_tid) 781 p = &(*p)->rb_right; 782 else 783 BUG(); 784 } 785 786 rb_link_node(&new->r_node, parent, p); 787 rb_insert_color(&new->r_node, &osdc->requests); 788 } 789 790 static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 791 u64 tid) 792 { 793 struct ceph_osd_request *req; 794 struct rb_node *n = osdc->requests.rb_node; 795 796 while (n) { 797 req = rb_entry(n, struct ceph_osd_request, r_node); 798 if (tid < req->r_tid) 799 n = n->rb_left; 800 else if (tid > req->r_tid) 801 n = n->rb_right; 802 else 803 return req; 804 } 805 return NULL; 806 } 807 808 static struct ceph_osd_request * 809 __lookup_request_ge(struct ceph_osd_client *osdc, 810 u64 tid) 811 { 812 struct ceph_osd_request *req; 813 struct rb_node *n = osdc->requests.rb_node; 814 815 while (n) { 816 req = rb_entry(n, struct ceph_osd_request, r_node); 817 if (tid < req->r_tid) { 818 if (!n->rb_left) 819 return req; 820 n = n->rb_left; 821 } else if (tid > req->r_tid) { 822 n = n->rb_right; 823 } else { 824 return req; 825 } 826 } 827 return NULL; 828 } 829 830 /* 831 * Resubmit requests pending on the given osd. 832 */ 833 static void __kick_osd_requests(struct ceph_osd_client *osdc, 834 struct ceph_osd *osd) 835 { 836 struct ceph_osd_request *req, *nreq; 837 LIST_HEAD(resend); 838 int err; 839 840 dout("__kick_osd_requests osd%d\n", osd->o_osd); 841 err = __reset_osd(osdc, osd); 842 if (err) 843 return; 844 /* 845 * Build up a list of requests to resend by traversing the 846 * osd's list of requests. Requests for a given object are 847 * sent in tid order, and that is also the order they're 848 * kept on this list. Therefore all requests that are in 849 * flight will be found first, followed by all requests that 850 * have not yet been sent. And to resend requests while 851 * preserving this order we will want to put any sent 852 * requests back on the front of the osd client's unsent 853 * list. 854 * 855 * So we build a separate ordered list of already-sent 856 * requests for the affected osd and splice it onto the 857 * front of the osd client's unsent list. Once we've seen a 858 * request that has not yet been sent we're done. Those 859 * requests are already sitting right where they belong. 860 */ 861 list_for_each_entry(req, &osd->o_requests, r_osd_item) { 862 if (!req->r_sent) 863 break; 864 list_move_tail(&req->r_req_lru_item, &resend); 865 dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, 866 osd->o_osd); 867 if (!req->r_linger) 868 req->r_flags |= CEPH_OSD_FLAG_RETRY; 869 } 870 list_splice(&resend, &osdc->req_unsent); 871 872 /* 873 * Linger requests are re-registered before sending, which 874 * sets up a new tid for each. We add them to the unsent 875 * list at the end to keep things in tid order. 876 */ 877 list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 878 r_linger_osd) { 879 /* 880 * reregister request prior to unregistering linger so 881 * that r_osd is preserved. 882 */ 883 BUG_ON(!list_empty(&req->r_req_lru_item)); 884 __register_request(osdc, req); 885 list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); 886 list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 887 __unregister_linger_request(osdc, req); 888 dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, 889 osd->o_osd); 890 } 891 } 892 893 /* 894 * If the osd connection drops, we need to resubmit all requests. 895 */ 896 static void osd_reset(struct ceph_connection *con) 897 { 898 struct ceph_osd *osd = con->private; 899 struct ceph_osd_client *osdc; 900 901 if (!osd) 902 return; 903 dout("osd_reset osd%d\n", osd->o_osd); 904 osdc = osd->o_osdc; 905 down_read(&osdc->map_sem); 906 mutex_lock(&osdc->request_mutex); 907 __kick_osd_requests(osdc, osd); 908 __send_queued(osdc); 909 mutex_unlock(&osdc->request_mutex); 910 up_read(&osdc->map_sem); 911 } 912 913 /* 914 * Track open sessions with osds. 915 */ 916 static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 917 { 918 struct ceph_osd *osd; 919 920 osd = kzalloc(sizeof(*osd), GFP_NOFS); 921 if (!osd) 922 return NULL; 923 924 atomic_set(&osd->o_ref, 1); 925 osd->o_osdc = osdc; 926 osd->o_osd = onum; 927 RB_CLEAR_NODE(&osd->o_node); 928 INIT_LIST_HEAD(&osd->o_requests); 929 INIT_LIST_HEAD(&osd->o_linger_requests); 930 INIT_LIST_HEAD(&osd->o_osd_lru); 931 osd->o_incarnation = 1; 932 933 ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 934 935 INIT_LIST_HEAD(&osd->o_keepalive_item); 936 return osd; 937 } 938 939 static struct ceph_osd *get_osd(struct ceph_osd *osd) 940 { 941 if (atomic_inc_not_zero(&osd->o_ref)) { 942 dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 943 atomic_read(&osd->o_ref)); 944 return osd; 945 } else { 946 dout("get_osd %p FAIL\n", osd); 947 return NULL; 948 } 949 } 950 951 static void put_osd(struct ceph_osd *osd) 952 { 953 dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 954 atomic_read(&osd->o_ref) - 1); 955 if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { 956 struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 957 958 ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); 959 kfree(osd); 960 } 961 } 962 963 /* 964 * remove an osd from our map 965 */ 966 static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 967 { 968 dout("__remove_osd %p\n", osd); 969 BUG_ON(!list_empty(&osd->o_requests)); 970 rb_erase(&osd->o_node, &osdc->osds); 971 list_del_init(&osd->o_osd_lru); 972 ceph_con_close(&osd->o_con); 973 put_osd(osd); 974 } 975 976 static void remove_all_osds(struct ceph_osd_client *osdc) 977 { 978 dout("%s %p\n", __func__, osdc); 979 mutex_lock(&osdc->request_mutex); 980 while (!RB_EMPTY_ROOT(&osdc->osds)) { 981 struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 982 struct ceph_osd, o_node); 983 __remove_osd(osdc, osd); 984 } 985 mutex_unlock(&osdc->request_mutex); 986 } 987 988 static void __move_osd_to_lru(struct ceph_osd_client *osdc, 989 struct ceph_osd *osd) 990 { 991 dout("__move_osd_to_lru %p\n", osd); 992 BUG_ON(!list_empty(&osd->o_osd_lru)); 993 list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 994 osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 995 } 996 997 static void __remove_osd_from_lru(struct ceph_osd *osd) 998 { 999 dout("__remove_osd_from_lru %p\n", osd); 1000 if (!list_empty(&osd->o_osd_lru)) 1001 list_del_init(&osd->o_osd_lru); 1002 } 1003 1004 static void remove_old_osds(struct ceph_osd_client *osdc) 1005 { 1006 struct ceph_osd *osd, *nosd; 1007 1008 dout("__remove_old_osds %p\n", osdc); 1009 mutex_lock(&osdc->request_mutex); 1010 list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 1011 if (time_before(jiffies, osd->lru_ttl)) 1012 break; 1013 __remove_osd(osdc, osd); 1014 } 1015 mutex_unlock(&osdc->request_mutex); 1016 } 1017 1018 /* 1019 * reset osd connect 1020 */ 1021 static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 1022 { 1023 struct ceph_entity_addr *peer_addr; 1024 1025 dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 1026 if (list_empty(&osd->o_requests) && 1027 list_empty(&osd->o_linger_requests)) { 1028 __remove_osd(osdc, osd); 1029 1030 return -ENODEV; 1031 } 1032 1033 peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 1034 if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 1035 !ceph_con_opened(&osd->o_con)) { 1036 struct ceph_osd_request *req; 1037 1038 dout(" osd addr hasn't changed and connection never opened," 1039 " letting msgr retry"); 1040 /* touch each r_stamp for handle_timeout()'s benfit */ 1041 list_for_each_entry(req, &osd->o_requests, r_osd_item) 1042 req->r_stamp = jiffies; 1043 1044 return -EAGAIN; 1045 } 1046 1047 ceph_con_close(&osd->o_con); 1048 ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1049 osd->o_incarnation++; 1050 1051 return 0; 1052 } 1053 1054 static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 1055 { 1056 struct rb_node **p = &osdc->osds.rb_node; 1057 struct rb_node *parent = NULL; 1058 struct ceph_osd *osd = NULL; 1059 1060 dout("__insert_osd %p osd%d\n", new, new->o_osd); 1061 while (*p) { 1062 parent = *p; 1063 osd = rb_entry(parent, struct ceph_osd, o_node); 1064 if (new->o_osd < osd->o_osd) 1065 p = &(*p)->rb_left; 1066 else if (new->o_osd > osd->o_osd) 1067 p = &(*p)->rb_right; 1068 else 1069 BUG(); 1070 } 1071 1072 rb_link_node(&new->o_node, parent, p); 1073 rb_insert_color(&new->o_node, &osdc->osds); 1074 } 1075 1076 static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 1077 { 1078 struct ceph_osd *osd; 1079 struct rb_node *n = osdc->osds.rb_node; 1080 1081 while (n) { 1082 osd = rb_entry(n, struct ceph_osd, o_node); 1083 if (o < osd->o_osd) 1084 n = n->rb_left; 1085 else if (o > osd->o_osd) 1086 n = n->rb_right; 1087 else 1088 return osd; 1089 } 1090 return NULL; 1091 } 1092 1093 static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 1094 { 1095 schedule_delayed_work(&osdc->timeout_work, 1096 osdc->client->options->osd_keepalive_timeout * HZ); 1097 } 1098 1099 static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 1100 { 1101 cancel_delayed_work(&osdc->timeout_work); 1102 } 1103 1104 /* 1105 * Register request, assign tid. If this is the first request, set up 1106 * the timeout event. 1107 */ 1108 static void __register_request(struct ceph_osd_client *osdc, 1109 struct ceph_osd_request *req) 1110 { 1111 req->r_tid = ++osdc->last_tid; 1112 req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 1113 dout("__register_request %p tid %lld\n", req, req->r_tid); 1114 __insert_request(osdc, req); 1115 ceph_osdc_get_request(req); 1116 osdc->num_requests++; 1117 if (osdc->num_requests == 1) { 1118 dout(" first request, scheduling timeout\n"); 1119 __schedule_osd_timeout(osdc); 1120 } 1121 } 1122 1123 /* 1124 * called under osdc->request_mutex 1125 */ 1126 static void __unregister_request(struct ceph_osd_client *osdc, 1127 struct ceph_osd_request *req) 1128 { 1129 if (RB_EMPTY_NODE(&req->r_node)) { 1130 dout("__unregister_request %p tid %lld not registered\n", 1131 req, req->r_tid); 1132 return; 1133 } 1134 1135 dout("__unregister_request %p tid %lld\n", req, req->r_tid); 1136 rb_erase(&req->r_node, &osdc->requests); 1137 osdc->num_requests--; 1138 1139 if (req->r_osd) { 1140 /* make sure the original request isn't in flight. */ 1141 ceph_msg_revoke(req->r_request); 1142 1143 list_del_init(&req->r_osd_item); 1144 if (list_empty(&req->r_osd->o_requests) && 1145 list_empty(&req->r_osd->o_linger_requests)) { 1146 dout("moving osd to %p lru\n", req->r_osd); 1147 __move_osd_to_lru(osdc, req->r_osd); 1148 } 1149 if (list_empty(&req->r_linger_item)) 1150 req->r_osd = NULL; 1151 } 1152 1153 list_del_init(&req->r_req_lru_item); 1154 ceph_osdc_put_request(req); 1155 1156 if (osdc->num_requests == 0) { 1157 dout(" no requests, canceling timeout\n"); 1158 __cancel_osd_timeout(osdc); 1159 } 1160 } 1161 1162 /* 1163 * Cancel a previously queued request message 1164 */ 1165 static void __cancel_request(struct ceph_osd_request *req) 1166 { 1167 if (req->r_sent && req->r_osd) { 1168 ceph_msg_revoke(req->r_request); 1169 req->r_sent = 0; 1170 } 1171 } 1172 1173 static void __register_linger_request(struct ceph_osd_client *osdc, 1174 struct ceph_osd_request *req) 1175 { 1176 dout("__register_linger_request %p\n", req); 1177 list_add_tail(&req->r_linger_item, &osdc->req_linger); 1178 if (req->r_osd) 1179 list_add_tail(&req->r_linger_osd, 1180 &req->r_osd->o_linger_requests); 1181 } 1182 1183 static void __unregister_linger_request(struct ceph_osd_client *osdc, 1184 struct ceph_osd_request *req) 1185 { 1186 dout("__unregister_linger_request %p\n", req); 1187 list_del_init(&req->r_linger_item); 1188 if (req->r_osd) { 1189 list_del_init(&req->r_linger_osd); 1190 1191 if (list_empty(&req->r_osd->o_requests) && 1192 list_empty(&req->r_osd->o_linger_requests)) { 1193 dout("moving osd to %p lru\n", req->r_osd); 1194 __move_osd_to_lru(osdc, req->r_osd); 1195 } 1196 if (list_empty(&req->r_osd_item)) 1197 req->r_osd = NULL; 1198 } 1199 } 1200 1201 void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, 1202 struct ceph_osd_request *req) 1203 { 1204 mutex_lock(&osdc->request_mutex); 1205 if (req->r_linger) { 1206 __unregister_linger_request(osdc, req); 1207 ceph_osdc_put_request(req); 1208 } 1209 mutex_unlock(&osdc->request_mutex); 1210 } 1211 EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); 1212 1213 void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1214 struct ceph_osd_request *req) 1215 { 1216 if (!req->r_linger) { 1217 dout("set_request_linger %p\n", req); 1218 req->r_linger = 1; 1219 /* 1220 * caller is now responsible for calling 1221 * unregister_linger_request 1222 */ 1223 ceph_osdc_get_request(req); 1224 } 1225 } 1226 EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1227 1228 /* 1229 * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 1230 * (as needed), and set the request r_osd appropriately. If there is 1231 * no up osd, set r_osd to NULL. Move the request to the appropriate list 1232 * (unsent, homeless) or leave on in-flight lru. 1233 * 1234 * Return 0 if unchanged, 1 if changed, or negative on error. 1235 * 1236 * Caller should hold map_sem for read and request_mutex. 1237 */ 1238 static int __map_request(struct ceph_osd_client *osdc, 1239 struct ceph_osd_request *req, int force_resend) 1240 { 1241 struct ceph_pg pgid; 1242 int acting[CEPH_PG_MAX_SIZE]; 1243 int o = -1, num = 0; 1244 int err; 1245 1246 dout("map_request %p tid %lld\n", req, req->r_tid); 1247 err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, 1248 ceph_file_layout_pg_pool(req->r_file_layout)); 1249 if (err) { 1250 list_move(&req->r_req_lru_item, &osdc->req_notarget); 1251 return err; 1252 } 1253 req->r_pgid = pgid; 1254 1255 err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); 1256 if (err > 0) { 1257 o = acting[0]; 1258 num = err; 1259 } 1260 1261 if ((!force_resend && 1262 req->r_osd && req->r_osd->o_osd == o && 1263 req->r_sent >= req->r_osd->o_incarnation && 1264 req->r_num_pg_osds == num && 1265 memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 1266 (req->r_osd == NULL && o == -1)) 1267 return 0; /* no change */ 1268 1269 dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 1270 req->r_tid, pgid.pool, pgid.seed, o, 1271 req->r_osd ? req->r_osd->o_osd : -1); 1272 1273 /* record full pg acting set */ 1274 memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 1275 req->r_num_pg_osds = num; 1276 1277 if (req->r_osd) { 1278 __cancel_request(req); 1279 list_del_init(&req->r_osd_item); 1280 req->r_osd = NULL; 1281 } 1282 1283 req->r_osd = __lookup_osd(osdc, o); 1284 if (!req->r_osd && o >= 0) { 1285 err = -ENOMEM; 1286 req->r_osd = create_osd(osdc, o); 1287 if (!req->r_osd) { 1288 list_move(&req->r_req_lru_item, &osdc->req_notarget); 1289 goto out; 1290 } 1291 1292 dout("map_request osd %p is osd%d\n", req->r_osd, o); 1293 __insert_osd(osdc, req->r_osd); 1294 1295 ceph_con_open(&req->r_osd->o_con, 1296 CEPH_ENTITY_TYPE_OSD, o, 1297 &osdc->osdmap->osd_addr[o]); 1298 } 1299 1300 if (req->r_osd) { 1301 __remove_osd_from_lru(req->r_osd); 1302 list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1303 list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 1304 } else { 1305 list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 1306 } 1307 err = 1; /* osd or pg changed */ 1308 1309 out: 1310 return err; 1311 } 1312 1313 /* 1314 * caller should hold map_sem (for read) and request_mutex 1315 */ 1316 static void __send_request(struct ceph_osd_client *osdc, 1317 struct ceph_osd_request *req) 1318 { 1319 void *p; 1320 1321 dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 1322 req, req->r_tid, req->r_osd->o_osd, req->r_flags, 1323 (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 1324 1325 /* fill in message content that changes each time we send it */ 1326 put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 1327 put_unaligned_le32(req->r_flags, req->r_request_flags); 1328 put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); 1329 p = req->r_request_pgid; 1330 ceph_encode_64(&p, req->r_pgid.pool); 1331 ceph_encode_32(&p, req->r_pgid.seed); 1332 put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 1333 memcpy(req->r_request_reassert_version, &req->r_reassert_version, 1334 sizeof(req->r_reassert_version)); 1335 1336 req->r_stamp = jiffies; 1337 list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 1338 1339 ceph_msg_get(req->r_request); /* send consumes a ref */ 1340 1341 /* Mark the request unsafe if this is the first timet's being sent. */ 1342 1343 if (!req->r_sent && req->r_unsafe_callback) 1344 req->r_unsafe_callback(req, true); 1345 req->r_sent = req->r_osd->o_incarnation; 1346 1347 ceph_con_send(&req->r_osd->o_con, req->r_request); 1348 } 1349 1350 /* 1351 * Send any requests in the queue (req_unsent). 1352 */ 1353 static void __send_queued(struct ceph_osd_client *osdc) 1354 { 1355 struct ceph_osd_request *req, *tmp; 1356 1357 dout("__send_queued\n"); 1358 list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 1359 __send_request(osdc, req); 1360 } 1361 1362 /* 1363 * Timeout callback, called every N seconds when 1 or more osd 1364 * requests has been active for more than N seconds. When this 1365 * happens, we ping all OSDs with requests who have timed out to 1366 * ensure any communications channel reset is detected. Reset the 1367 * request timeouts another N seconds in the future as we go. 1368 * Reschedule the timeout event another N seconds in future (unless 1369 * there are no open requests). 1370 */ 1371 static void handle_timeout(struct work_struct *work) 1372 { 1373 struct ceph_osd_client *osdc = 1374 container_of(work, struct ceph_osd_client, timeout_work.work); 1375 struct ceph_osd_request *req; 1376 struct ceph_osd *osd; 1377 unsigned long keepalive = 1378 osdc->client->options->osd_keepalive_timeout * HZ; 1379 struct list_head slow_osds; 1380 dout("timeout\n"); 1381 down_read(&osdc->map_sem); 1382 1383 ceph_monc_request_next_osdmap(&osdc->client->monc); 1384 1385 mutex_lock(&osdc->request_mutex); 1386 1387 /* 1388 * ping osds that are a bit slow. this ensures that if there 1389 * is a break in the TCP connection we will notice, and reopen 1390 * a connection with that osd (from the fault callback). 1391 */ 1392 INIT_LIST_HEAD(&slow_osds); 1393 list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 1394 if (time_before(jiffies, req->r_stamp + keepalive)) 1395 break; 1396 1397 osd = req->r_osd; 1398 BUG_ON(!osd); 1399 dout(" tid %llu is slow, will send keepalive on osd%d\n", 1400 req->r_tid, osd->o_osd); 1401 list_move_tail(&osd->o_keepalive_item, &slow_osds); 1402 } 1403 while (!list_empty(&slow_osds)) { 1404 osd = list_entry(slow_osds.next, struct ceph_osd, 1405 o_keepalive_item); 1406 list_del_init(&osd->o_keepalive_item); 1407 ceph_con_keepalive(&osd->o_con); 1408 } 1409 1410 __schedule_osd_timeout(osdc); 1411 __send_queued(osdc); 1412 mutex_unlock(&osdc->request_mutex); 1413 up_read(&osdc->map_sem); 1414 } 1415 1416 static void handle_osds_timeout(struct work_struct *work) 1417 { 1418 struct ceph_osd_client *osdc = 1419 container_of(work, struct ceph_osd_client, 1420 osds_timeout_work.work); 1421 unsigned long delay = 1422 osdc->client->options->osd_idle_ttl * HZ >> 2; 1423 1424 dout("osds timeout\n"); 1425 down_read(&osdc->map_sem); 1426 remove_old_osds(osdc); 1427 up_read(&osdc->map_sem); 1428 1429 schedule_delayed_work(&osdc->osds_timeout_work, 1430 round_jiffies_relative(delay)); 1431 } 1432 1433 static void complete_request(struct ceph_osd_request *req) 1434 { 1435 if (req->r_unsafe_callback) 1436 req->r_unsafe_callback(req, false); 1437 complete_all(&req->r_safe_completion); /* fsync waiter */ 1438 } 1439 1440 /* 1441 * handle osd op reply. either call the callback if it is specified, 1442 * or do the completion to wake up the waiting thread. 1443 */ 1444 static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 1445 struct ceph_connection *con) 1446 { 1447 void *p, *end; 1448 struct ceph_osd_request *req; 1449 u64 tid; 1450 int object_len; 1451 unsigned int numops; 1452 int payload_len, flags; 1453 s32 result; 1454 s32 retry_attempt; 1455 struct ceph_pg pg; 1456 int err; 1457 u32 reassert_epoch; 1458 u64 reassert_version; 1459 u32 osdmap_epoch; 1460 int already_completed; 1461 u32 bytes; 1462 unsigned int i; 1463 1464 tid = le64_to_cpu(msg->hdr.tid); 1465 dout("handle_reply %p tid %llu\n", msg, tid); 1466 1467 p = msg->front.iov_base; 1468 end = p + msg->front.iov_len; 1469 1470 ceph_decode_need(&p, end, 4, bad); 1471 object_len = ceph_decode_32(&p); 1472 ceph_decode_need(&p, end, object_len, bad); 1473 p += object_len; 1474 1475 err = ceph_decode_pgid(&p, end, &pg); 1476 if (err) 1477 goto bad; 1478 1479 ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 1480 flags = ceph_decode_64(&p); 1481 result = ceph_decode_32(&p); 1482 reassert_epoch = ceph_decode_32(&p); 1483 reassert_version = ceph_decode_64(&p); 1484 osdmap_epoch = ceph_decode_32(&p); 1485 1486 /* lookup */ 1487 mutex_lock(&osdc->request_mutex); 1488 req = __lookup_request(osdc, tid); 1489 if (req == NULL) { 1490 dout("handle_reply tid %llu dne\n", tid); 1491 goto bad_mutex; 1492 } 1493 ceph_osdc_get_request(req); 1494 1495 dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 1496 req, result); 1497 1498 ceph_decode_need(&p, end, 4, bad); 1499 numops = ceph_decode_32(&p); 1500 if (numops > CEPH_OSD_MAX_OP) 1501 goto bad_put; 1502 if (numops != req->r_num_ops) 1503 goto bad_put; 1504 payload_len = 0; 1505 ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); 1506 for (i = 0; i < numops; i++) { 1507 struct ceph_osd_op *op = p; 1508 int len; 1509 1510 len = le32_to_cpu(op->payload_len); 1511 req->r_reply_op_len[i] = len; 1512 dout(" op %d has %d bytes\n", i, len); 1513 payload_len += len; 1514 p += sizeof(*op); 1515 } 1516 bytes = le32_to_cpu(msg->hdr.data_len); 1517 if (payload_len != bytes) { 1518 pr_warning("sum of op payload lens %d != data_len %d", 1519 payload_len, bytes); 1520 goto bad_put; 1521 } 1522 1523 ceph_decode_need(&p, end, 4 + numops * 4, bad); 1524 retry_attempt = ceph_decode_32(&p); 1525 for (i = 0; i < numops; i++) 1526 req->r_reply_op_result[i] = ceph_decode_32(&p); 1527 1528 if (!req->r_got_reply) { 1529 1530 req->r_result = result; 1531 dout("handle_reply result %d bytes %d\n", req->r_result, 1532 bytes); 1533 if (req->r_result == 0) 1534 req->r_result = bytes; 1535 1536 /* in case this is a write and we need to replay, */ 1537 req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 1538 req->r_reassert_version.version = cpu_to_le64(reassert_version); 1539 1540 req->r_got_reply = 1; 1541 } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 1542 dout("handle_reply tid %llu dup ack\n", tid); 1543 mutex_unlock(&osdc->request_mutex); 1544 goto done; 1545 } 1546 1547 dout("handle_reply tid %llu flags %d\n", tid, flags); 1548 1549 if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1550 __register_linger_request(osdc, req); 1551 1552 /* either this is a read, or we got the safe response */ 1553 if (result < 0 || 1554 (flags & CEPH_OSD_FLAG_ONDISK) || 1555 ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 1556 __unregister_request(osdc, req); 1557 1558 already_completed = req->r_completed; 1559 req->r_completed = 1; 1560 mutex_unlock(&osdc->request_mutex); 1561 if (already_completed) 1562 goto done; 1563 1564 if (req->r_callback) 1565 req->r_callback(req, msg); 1566 else 1567 complete_all(&req->r_completion); 1568 1569 if (flags & CEPH_OSD_FLAG_ONDISK) 1570 complete_request(req); 1571 1572 done: 1573 dout("req=%p req->r_linger=%d\n", req, req->r_linger); 1574 ceph_osdc_put_request(req); 1575 return; 1576 1577 bad_put: 1578 ceph_osdc_put_request(req); 1579 bad_mutex: 1580 mutex_unlock(&osdc->request_mutex); 1581 bad: 1582 pr_err("corrupt osd_op_reply got %d %d\n", 1583 (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 1584 ceph_msg_dump(msg); 1585 } 1586 1587 static void reset_changed_osds(struct ceph_osd_client *osdc) 1588 { 1589 struct rb_node *p, *n; 1590 1591 for (p = rb_first(&osdc->osds); p; p = n) { 1592 struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 1593 1594 n = rb_next(p); 1595 if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 1596 memcmp(&osd->o_con.peer_addr, 1597 ceph_osd_addr(osdc->osdmap, 1598 osd->o_osd), 1599 sizeof(struct ceph_entity_addr)) != 0) 1600 __reset_osd(osdc, osd); 1601 } 1602 } 1603 1604 /* 1605 * Requeue requests whose mapping to an OSD has changed. If requests map to 1606 * no osd, request a new map. 1607 * 1608 * Caller should hold map_sem for read. 1609 */ 1610 static void kick_requests(struct ceph_osd_client *osdc, int force_resend) 1611 { 1612 struct ceph_osd_request *req, *nreq; 1613 struct rb_node *p; 1614 int needmap = 0; 1615 int err; 1616 1617 dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); 1618 mutex_lock(&osdc->request_mutex); 1619 for (p = rb_first(&osdc->requests); p; ) { 1620 req = rb_entry(p, struct ceph_osd_request, r_node); 1621 p = rb_next(p); 1622 1623 /* 1624 * For linger requests that have not yet been 1625 * registered, move them to the linger list; they'll 1626 * be sent to the osd in the loop below. Unregister 1627 * the request before re-registering it as a linger 1628 * request to ensure the __map_request() below 1629 * will decide it needs to be sent. 1630 */ 1631 if (req->r_linger && list_empty(&req->r_linger_item)) { 1632 dout("%p tid %llu restart on osd%d\n", 1633 req, req->r_tid, 1634 req->r_osd ? req->r_osd->o_osd : -1); 1635 __unregister_request(osdc, req); 1636 __register_linger_request(osdc, req); 1637 continue; 1638 } 1639 1640 err = __map_request(osdc, req, force_resend); 1641 if (err < 0) 1642 continue; /* error */ 1643 if (req->r_osd == NULL) { 1644 dout("%p tid %llu maps to no osd\n", req, req->r_tid); 1645 needmap++; /* request a newer map */ 1646 } else if (err > 0) { 1647 if (!req->r_linger) { 1648 dout("%p tid %llu requeued on osd%d\n", req, 1649 req->r_tid, 1650 req->r_osd ? req->r_osd->o_osd : -1); 1651 req->r_flags |= CEPH_OSD_FLAG_RETRY; 1652 } 1653 } 1654 } 1655 1656 list_for_each_entry_safe(req, nreq, &osdc->req_linger, 1657 r_linger_item) { 1658 dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 1659 1660 err = __map_request(osdc, req, force_resend); 1661 dout("__map_request returned %d\n", err); 1662 if (err == 0) 1663 continue; /* no change and no osd was specified */ 1664 if (err < 0) 1665 continue; /* hrm! */ 1666 if (req->r_osd == NULL) { 1667 dout("tid %llu maps to no valid osd\n", req->r_tid); 1668 needmap++; /* request a newer map */ 1669 continue; 1670 } 1671 1672 dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, 1673 req->r_osd ? req->r_osd->o_osd : -1); 1674 __register_request(osdc, req); 1675 __unregister_linger_request(osdc, req); 1676 } 1677 mutex_unlock(&osdc->request_mutex); 1678 1679 if (needmap) { 1680 dout("%d requests for down osds, need new map\n", needmap); 1681 ceph_monc_request_next_osdmap(&osdc->client->monc); 1682 } 1683 reset_changed_osds(osdc); 1684 } 1685 1686 1687 /* 1688 * Process updated osd map. 1689 * 1690 * The message contains any number of incremental and full maps, normally 1691 * indicating some sort of topology change in the cluster. Kick requests 1692 * off to different OSDs as needed. 1693 */ 1694 void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 1695 { 1696 void *p, *end, *next; 1697 u32 nr_maps, maplen; 1698 u32 epoch; 1699 struct ceph_osdmap *newmap = NULL, *oldmap; 1700 int err; 1701 struct ceph_fsid fsid; 1702 1703 dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 1704 p = msg->front.iov_base; 1705 end = p + msg->front.iov_len; 1706 1707 /* verify fsid */ 1708 ceph_decode_need(&p, end, sizeof(fsid), bad); 1709 ceph_decode_copy(&p, &fsid, sizeof(fsid)); 1710 if (ceph_check_fsid(osdc->client, &fsid) < 0) 1711 return; 1712 1713 down_write(&osdc->map_sem); 1714 1715 /* incremental maps */ 1716 ceph_decode_32_safe(&p, end, nr_maps, bad); 1717 dout(" %d inc maps\n", nr_maps); 1718 while (nr_maps > 0) { 1719 ceph_decode_need(&p, end, 2*sizeof(u32), bad); 1720 epoch = ceph_decode_32(&p); 1721 maplen = ceph_decode_32(&p); 1722 ceph_decode_need(&p, end, maplen, bad); 1723 next = p + maplen; 1724 if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 1725 dout("applying incremental map %u len %d\n", 1726 epoch, maplen); 1727 newmap = osdmap_apply_incremental(&p, next, 1728 osdc->osdmap, 1729 &osdc->client->msgr); 1730 if (IS_ERR(newmap)) { 1731 err = PTR_ERR(newmap); 1732 goto bad; 1733 } 1734 BUG_ON(!newmap); 1735 if (newmap != osdc->osdmap) { 1736 ceph_osdmap_destroy(osdc->osdmap); 1737 osdc->osdmap = newmap; 1738 } 1739 kick_requests(osdc, 0); 1740 } else { 1741 dout("ignoring incremental map %u len %d\n", 1742 epoch, maplen); 1743 } 1744 p = next; 1745 nr_maps--; 1746 } 1747 if (newmap) 1748 goto done; 1749 1750 /* full maps */ 1751 ceph_decode_32_safe(&p, end, nr_maps, bad); 1752 dout(" %d full maps\n", nr_maps); 1753 while (nr_maps) { 1754 ceph_decode_need(&p, end, 2*sizeof(u32), bad); 1755 epoch = ceph_decode_32(&p); 1756 maplen = ceph_decode_32(&p); 1757 ceph_decode_need(&p, end, maplen, bad); 1758 if (nr_maps > 1) { 1759 dout("skipping non-latest full map %u len %d\n", 1760 epoch, maplen); 1761 } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 1762 dout("skipping full map %u len %d, " 1763 "older than our %u\n", epoch, maplen, 1764 osdc->osdmap->epoch); 1765 } else { 1766 int skipped_map = 0; 1767 1768 dout("taking full map %u len %d\n", epoch, maplen); 1769 newmap = osdmap_decode(&p, p+maplen); 1770 if (IS_ERR(newmap)) { 1771 err = PTR_ERR(newmap); 1772 goto bad; 1773 } 1774 BUG_ON(!newmap); 1775 oldmap = osdc->osdmap; 1776 osdc->osdmap = newmap; 1777 if (oldmap) { 1778 if (oldmap->epoch + 1 < newmap->epoch) 1779 skipped_map = 1; 1780 ceph_osdmap_destroy(oldmap); 1781 } 1782 kick_requests(osdc, skipped_map); 1783 } 1784 p += maplen; 1785 nr_maps--; 1786 } 1787 1788 done: 1789 downgrade_write(&osdc->map_sem); 1790 ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 1791 1792 /* 1793 * subscribe to subsequent osdmap updates if full to ensure 1794 * we find out when we are no longer full and stop returning 1795 * ENOSPC. 1796 */ 1797 if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) 1798 ceph_monc_request_next_osdmap(&osdc->client->monc); 1799 1800 mutex_lock(&osdc->request_mutex); 1801 __send_queued(osdc); 1802 mutex_unlock(&osdc->request_mutex); 1803 up_read(&osdc->map_sem); 1804 wake_up_all(&osdc->client->auth_wq); 1805 return; 1806 1807 bad: 1808 pr_err("osdc handle_map corrupt msg\n"); 1809 ceph_msg_dump(msg); 1810 up_write(&osdc->map_sem); 1811 return; 1812 } 1813 1814 /* 1815 * watch/notify callback event infrastructure 1816 * 1817 * These callbacks are used both for watch and notify operations. 1818 */ 1819 static void __release_event(struct kref *kref) 1820 { 1821 struct ceph_osd_event *event = 1822 container_of(kref, struct ceph_osd_event, kref); 1823 1824 dout("__release_event %p\n", event); 1825 kfree(event); 1826 } 1827 1828 static void get_event(struct ceph_osd_event *event) 1829 { 1830 kref_get(&event->kref); 1831 } 1832 1833 void ceph_osdc_put_event(struct ceph_osd_event *event) 1834 { 1835 kref_put(&event->kref, __release_event); 1836 } 1837 EXPORT_SYMBOL(ceph_osdc_put_event); 1838 1839 static void __insert_event(struct ceph_osd_client *osdc, 1840 struct ceph_osd_event *new) 1841 { 1842 struct rb_node **p = &osdc->event_tree.rb_node; 1843 struct rb_node *parent = NULL; 1844 struct ceph_osd_event *event = NULL; 1845 1846 while (*p) { 1847 parent = *p; 1848 event = rb_entry(parent, struct ceph_osd_event, node); 1849 if (new->cookie < event->cookie) 1850 p = &(*p)->rb_left; 1851 else if (new->cookie > event->cookie) 1852 p = &(*p)->rb_right; 1853 else 1854 BUG(); 1855 } 1856 1857 rb_link_node(&new->node, parent, p); 1858 rb_insert_color(&new->node, &osdc->event_tree); 1859 } 1860 1861 static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 1862 u64 cookie) 1863 { 1864 struct rb_node **p = &osdc->event_tree.rb_node; 1865 struct rb_node *parent = NULL; 1866 struct ceph_osd_event *event = NULL; 1867 1868 while (*p) { 1869 parent = *p; 1870 event = rb_entry(parent, struct ceph_osd_event, node); 1871 if (cookie < event->cookie) 1872 p = &(*p)->rb_left; 1873 else if (cookie > event->cookie) 1874 p = &(*p)->rb_right; 1875 else 1876 return event; 1877 } 1878 return NULL; 1879 } 1880 1881 static void __remove_event(struct ceph_osd_event *event) 1882 { 1883 struct ceph_osd_client *osdc = event->osdc; 1884 1885 if (!RB_EMPTY_NODE(&event->node)) { 1886 dout("__remove_event removed %p\n", event); 1887 rb_erase(&event->node, &osdc->event_tree); 1888 ceph_osdc_put_event(event); 1889 } else { 1890 dout("__remove_event didn't remove %p\n", event); 1891 } 1892 } 1893 1894 int ceph_osdc_create_event(struct ceph_osd_client *osdc, 1895 void (*event_cb)(u64, u64, u8, void *), 1896 void *data, struct ceph_osd_event **pevent) 1897 { 1898 struct ceph_osd_event *event; 1899 1900 event = kmalloc(sizeof(*event), GFP_NOIO); 1901 if (!event) 1902 return -ENOMEM; 1903 1904 dout("create_event %p\n", event); 1905 event->cb = event_cb; 1906 event->one_shot = 0; 1907 event->data = data; 1908 event->osdc = osdc; 1909 INIT_LIST_HEAD(&event->osd_node); 1910 RB_CLEAR_NODE(&event->node); 1911 kref_init(&event->kref); /* one ref for us */ 1912 kref_get(&event->kref); /* one ref for the caller */ 1913 1914 spin_lock(&osdc->event_lock); 1915 event->cookie = ++osdc->event_count; 1916 __insert_event(osdc, event); 1917 spin_unlock(&osdc->event_lock); 1918 1919 *pevent = event; 1920 return 0; 1921 } 1922 EXPORT_SYMBOL(ceph_osdc_create_event); 1923 1924 void ceph_osdc_cancel_event(struct ceph_osd_event *event) 1925 { 1926 struct ceph_osd_client *osdc = event->osdc; 1927 1928 dout("cancel_event %p\n", event); 1929 spin_lock(&osdc->event_lock); 1930 __remove_event(event); 1931 spin_unlock(&osdc->event_lock); 1932 ceph_osdc_put_event(event); /* caller's */ 1933 } 1934 EXPORT_SYMBOL(ceph_osdc_cancel_event); 1935 1936 1937 static void do_event_work(struct work_struct *work) 1938 { 1939 struct ceph_osd_event_work *event_work = 1940 container_of(work, struct ceph_osd_event_work, work); 1941 struct ceph_osd_event *event = event_work->event; 1942 u64 ver = event_work->ver; 1943 u64 notify_id = event_work->notify_id; 1944 u8 opcode = event_work->opcode; 1945 1946 dout("do_event_work completing %p\n", event); 1947 event->cb(ver, notify_id, opcode, event->data); 1948 dout("do_event_work completed %p\n", event); 1949 ceph_osdc_put_event(event); 1950 kfree(event_work); 1951 } 1952 1953 1954 /* 1955 * Process osd watch notifications 1956 */ 1957 static void handle_watch_notify(struct ceph_osd_client *osdc, 1958 struct ceph_msg *msg) 1959 { 1960 void *p, *end; 1961 u8 proto_ver; 1962 u64 cookie, ver, notify_id; 1963 u8 opcode; 1964 struct ceph_osd_event *event; 1965 struct ceph_osd_event_work *event_work; 1966 1967 p = msg->front.iov_base; 1968 end = p + msg->front.iov_len; 1969 1970 ceph_decode_8_safe(&p, end, proto_ver, bad); 1971 ceph_decode_8_safe(&p, end, opcode, bad); 1972 ceph_decode_64_safe(&p, end, cookie, bad); 1973 ceph_decode_64_safe(&p, end, ver, bad); 1974 ceph_decode_64_safe(&p, end, notify_id, bad); 1975 1976 spin_lock(&osdc->event_lock); 1977 event = __find_event(osdc, cookie); 1978 if (event) { 1979 BUG_ON(event->one_shot); 1980 get_event(event); 1981 } 1982 spin_unlock(&osdc->event_lock); 1983 dout("handle_watch_notify cookie %lld ver %lld event %p\n", 1984 cookie, ver, event); 1985 if (event) { 1986 event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 1987 if (!event_work) { 1988 dout("ERROR: could not allocate event_work\n"); 1989 goto done_err; 1990 } 1991 INIT_WORK(&event_work->work, do_event_work); 1992 event_work->event = event; 1993 event_work->ver = ver; 1994 event_work->notify_id = notify_id; 1995 event_work->opcode = opcode; 1996 if (!queue_work(osdc->notify_wq, &event_work->work)) { 1997 dout("WARNING: failed to queue notify event work\n"); 1998 goto done_err; 1999 } 2000 } 2001 2002 return; 2003 2004 done_err: 2005 ceph_osdc_put_event(event); 2006 return; 2007 2008 bad: 2009 pr_err("osdc handle_watch_notify corrupt msg\n"); 2010 return; 2011 } 2012 2013 /* 2014 * build new request AND message 2015 * 2016 */ 2017 void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, 2018 struct ceph_snap_context *snapc, u64 snap_id, 2019 struct timespec *mtime) 2020 { 2021 struct ceph_msg *msg = req->r_request; 2022 void *p; 2023 size_t msg_size; 2024 int flags = req->r_flags; 2025 u64 data_len; 2026 unsigned int i; 2027 2028 req->r_snapid = snap_id; 2029 req->r_snapc = ceph_get_snap_context(snapc); 2030 2031 /* encode request */ 2032 msg->hdr.version = cpu_to_le16(4); 2033 2034 p = msg->front.iov_base; 2035 ceph_encode_32(&p, 1); /* client_inc is always 1 */ 2036 req->r_request_osdmap_epoch = p; 2037 p += 4; 2038 req->r_request_flags = p; 2039 p += 4; 2040 if (req->r_flags & CEPH_OSD_FLAG_WRITE) 2041 ceph_encode_timespec(p, mtime); 2042 p += sizeof(struct ceph_timespec); 2043 req->r_request_reassert_version = p; 2044 p += sizeof(struct ceph_eversion); /* will get filled in */ 2045 2046 /* oloc */ 2047 ceph_encode_8(&p, 4); 2048 ceph_encode_8(&p, 4); 2049 ceph_encode_32(&p, 8 + 4 + 4); 2050 req->r_request_pool = p; 2051 p += 8; 2052 ceph_encode_32(&p, -1); /* preferred */ 2053 ceph_encode_32(&p, 0); /* key len */ 2054 2055 ceph_encode_8(&p, 1); 2056 req->r_request_pgid = p; 2057 p += 8 + 4; 2058 ceph_encode_32(&p, -1); /* preferred */ 2059 2060 /* oid */ 2061 ceph_encode_32(&p, req->r_oid_len); 2062 memcpy(p, req->r_oid, req->r_oid_len); 2063 dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); 2064 p += req->r_oid_len; 2065 2066 /* ops--can imply data */ 2067 ceph_encode_16(&p, (u16)req->r_num_ops); 2068 data_len = 0; 2069 for (i = 0; i < req->r_num_ops; i++) { 2070 data_len += osd_req_encode_op(req, p, i); 2071 p += sizeof(struct ceph_osd_op); 2072 } 2073 2074 /* snaps */ 2075 ceph_encode_64(&p, req->r_snapid); 2076 ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 2077 ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 2078 if (req->r_snapc) { 2079 for (i = 0; i < snapc->num_snaps; i++) { 2080 ceph_encode_64(&p, req->r_snapc->snaps[i]); 2081 } 2082 } 2083 2084 req->r_request_attempts = p; 2085 p += 4; 2086 2087 /* data */ 2088 if (flags & CEPH_OSD_FLAG_WRITE) { 2089 u16 data_off; 2090 2091 /* 2092 * The header "data_off" is a hint to the receiver 2093 * allowing it to align received data into its 2094 * buffers such that there's no need to re-copy 2095 * it before writing it to disk (direct I/O). 2096 */ 2097 data_off = (u16) (off & 0xffff); 2098 req->r_request->hdr.data_off = cpu_to_le16(data_off); 2099 } 2100 req->r_request->hdr.data_len = cpu_to_le32(data_len); 2101 2102 BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 2103 msg_size = p - msg->front.iov_base; 2104 msg->front.iov_len = msg_size; 2105 msg->hdr.front_len = cpu_to_le32(msg_size); 2106 2107 dout("build_request msg_size was %d\n", (int)msg_size); 2108 } 2109 EXPORT_SYMBOL(ceph_osdc_build_request); 2110 2111 /* 2112 * Register request, send initial attempt. 2113 */ 2114 int ceph_osdc_start_request(struct ceph_osd_client *osdc, 2115 struct ceph_osd_request *req, 2116 bool nofail) 2117 { 2118 int rc = 0; 2119 2120 down_read(&osdc->map_sem); 2121 mutex_lock(&osdc->request_mutex); 2122 __register_request(osdc, req); 2123 WARN_ON(req->r_sent); 2124 rc = __map_request(osdc, req, 0); 2125 if (rc < 0) { 2126 if (nofail) { 2127 dout("osdc_start_request failed map, " 2128 " will retry %lld\n", req->r_tid); 2129 rc = 0; 2130 } 2131 goto out_unlock; 2132 } 2133 if (req->r_osd == NULL) { 2134 dout("send_request %p no up osds in pg\n", req); 2135 ceph_monc_request_next_osdmap(&osdc->client->monc); 2136 } else { 2137 __send_queued(osdc); 2138 } 2139 rc = 0; 2140 out_unlock: 2141 mutex_unlock(&osdc->request_mutex); 2142 up_read(&osdc->map_sem); 2143 return rc; 2144 } 2145 EXPORT_SYMBOL(ceph_osdc_start_request); 2146 2147 /* 2148 * wait for a request to complete 2149 */ 2150 int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 2151 struct ceph_osd_request *req) 2152 { 2153 int rc; 2154 2155 rc = wait_for_completion_interruptible(&req->r_completion); 2156 if (rc < 0) { 2157 mutex_lock(&osdc->request_mutex); 2158 __cancel_request(req); 2159 __unregister_request(osdc, req); 2160 mutex_unlock(&osdc->request_mutex); 2161 complete_request(req); 2162 dout("wait_request tid %llu canceled/timed out\n", req->r_tid); 2163 return rc; 2164 } 2165 2166 dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); 2167 return req->r_result; 2168 } 2169 EXPORT_SYMBOL(ceph_osdc_wait_request); 2170 2171 /* 2172 * sync - wait for all in-flight requests to flush. avoid starvation. 2173 */ 2174 void ceph_osdc_sync(struct ceph_osd_client *osdc) 2175 { 2176 struct ceph_osd_request *req; 2177 u64 last_tid, next_tid = 0; 2178 2179 mutex_lock(&osdc->request_mutex); 2180 last_tid = osdc->last_tid; 2181 while (1) { 2182 req = __lookup_request_ge(osdc, next_tid); 2183 if (!req) 2184 break; 2185 if (req->r_tid > last_tid) 2186 break; 2187 2188 next_tid = req->r_tid + 1; 2189 if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 2190 continue; 2191 2192 ceph_osdc_get_request(req); 2193 mutex_unlock(&osdc->request_mutex); 2194 dout("sync waiting on tid %llu (last is %llu)\n", 2195 req->r_tid, last_tid); 2196 wait_for_completion(&req->r_safe_completion); 2197 mutex_lock(&osdc->request_mutex); 2198 ceph_osdc_put_request(req); 2199 } 2200 mutex_unlock(&osdc->request_mutex); 2201 dout("sync done (thru tid %llu)\n", last_tid); 2202 } 2203 EXPORT_SYMBOL(ceph_osdc_sync); 2204 2205 /* 2206 * init, shutdown 2207 */ 2208 int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 2209 { 2210 int err; 2211 2212 dout("init\n"); 2213 osdc->client = client; 2214 osdc->osdmap = NULL; 2215 init_rwsem(&osdc->map_sem); 2216 init_completion(&osdc->map_waiters); 2217 osdc->last_requested_map = 0; 2218 mutex_init(&osdc->request_mutex); 2219 osdc->last_tid = 0; 2220 osdc->osds = RB_ROOT; 2221 INIT_LIST_HEAD(&osdc->osd_lru); 2222 osdc->requests = RB_ROOT; 2223 INIT_LIST_HEAD(&osdc->req_lru); 2224 INIT_LIST_HEAD(&osdc->req_unsent); 2225 INIT_LIST_HEAD(&osdc->req_notarget); 2226 INIT_LIST_HEAD(&osdc->req_linger); 2227 osdc->num_requests = 0; 2228 INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 2229 INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2230 spin_lock_init(&osdc->event_lock); 2231 osdc->event_tree = RB_ROOT; 2232 osdc->event_count = 0; 2233 2234 schedule_delayed_work(&osdc->osds_timeout_work, 2235 round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 2236 2237 err = -ENOMEM; 2238 osdc->req_mempool = mempool_create_kmalloc_pool(10, 2239 sizeof(struct ceph_osd_request)); 2240 if (!osdc->req_mempool) 2241 goto out; 2242 2243 err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2244 OSD_OP_FRONT_LEN, 10, true, 2245 "osd_op"); 2246 if (err < 0) 2247 goto out_mempool; 2248 err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 2249 OSD_OPREPLY_FRONT_LEN, 10, true, 2250 "osd_op_reply"); 2251 if (err < 0) 2252 goto out_msgpool; 2253 2254 osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2255 if (IS_ERR(osdc->notify_wq)) { 2256 err = PTR_ERR(osdc->notify_wq); 2257 osdc->notify_wq = NULL; 2258 goto out_msgpool; 2259 } 2260 return 0; 2261 2262 out_msgpool: 2263 ceph_msgpool_destroy(&osdc->msgpool_op); 2264 out_mempool: 2265 mempool_destroy(osdc->req_mempool); 2266 out: 2267 return err; 2268 } 2269 2270 void ceph_osdc_stop(struct ceph_osd_client *osdc) 2271 { 2272 flush_workqueue(osdc->notify_wq); 2273 destroy_workqueue(osdc->notify_wq); 2274 cancel_delayed_work_sync(&osdc->timeout_work); 2275 cancel_delayed_work_sync(&osdc->osds_timeout_work); 2276 if (osdc->osdmap) { 2277 ceph_osdmap_destroy(osdc->osdmap); 2278 osdc->osdmap = NULL; 2279 } 2280 remove_all_osds(osdc); 2281 mempool_destroy(osdc->req_mempool); 2282 ceph_msgpool_destroy(&osdc->msgpool_op); 2283 ceph_msgpool_destroy(&osdc->msgpool_op_reply); 2284 } 2285 2286 /* 2287 * Read some contiguous pages. If we cross a stripe boundary, shorten 2288 * *plen. Return number of bytes read, or error. 2289 */ 2290 int ceph_osdc_readpages(struct ceph_osd_client *osdc, 2291 struct ceph_vino vino, struct ceph_file_layout *layout, 2292 u64 off, u64 *plen, 2293 u32 truncate_seq, u64 truncate_size, 2294 struct page **pages, int num_pages, int page_align) 2295 { 2296 struct ceph_osd_request *req; 2297 int rc = 0; 2298 2299 dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 2300 vino.snap, off, *plen); 2301 req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1, 2302 CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2303 NULL, truncate_seq, truncate_size, 2304 false); 2305 if (IS_ERR(req)) 2306 return PTR_ERR(req); 2307 2308 /* it may be a short read due to an object boundary */ 2309 2310 osd_req_op_extent_osd_data_pages(req, 0, 2311 pages, *plen, page_align, false, false); 2312 2313 dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 2314 off, *plen, *plen, page_align); 2315 2316 ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); 2317 2318 rc = ceph_osdc_start_request(osdc, req, false); 2319 if (!rc) 2320 rc = ceph_osdc_wait_request(osdc, req); 2321 2322 ceph_osdc_put_request(req); 2323 dout("readpages result %d\n", rc); 2324 return rc; 2325 } 2326 EXPORT_SYMBOL(ceph_osdc_readpages); 2327 2328 /* 2329 * do a synchronous write on N pages 2330 */ 2331 int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 2332 struct ceph_file_layout *layout, 2333 struct ceph_snap_context *snapc, 2334 u64 off, u64 len, 2335 u32 truncate_seq, u64 truncate_size, 2336 struct timespec *mtime, 2337 struct page **pages, int num_pages) 2338 { 2339 struct ceph_osd_request *req; 2340 int rc = 0; 2341 int page_align = off & ~PAGE_MASK; 2342 2343 BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 2344 req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1, 2345 CEPH_OSD_OP_WRITE, 2346 CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2347 snapc, truncate_seq, truncate_size, 2348 true); 2349 if (IS_ERR(req)) 2350 return PTR_ERR(req); 2351 2352 /* it may be a short write due to an object boundary */ 2353 osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 2354 false, false); 2355 dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 2356 2357 ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); 2358 2359 rc = ceph_osdc_start_request(osdc, req, true); 2360 if (!rc) 2361 rc = ceph_osdc_wait_request(osdc, req); 2362 2363 ceph_osdc_put_request(req); 2364 if (rc == 0) 2365 rc = len; 2366 dout("writepages result %d\n", rc); 2367 return rc; 2368 } 2369 EXPORT_SYMBOL(ceph_osdc_writepages); 2370 2371 int ceph_osdc_setup(void) 2372 { 2373 BUG_ON(ceph_osd_request_cache); 2374 ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", 2375 sizeof (struct ceph_osd_request), 2376 __alignof__(struct ceph_osd_request), 2377 0, NULL); 2378 2379 return ceph_osd_request_cache ? 0 : -ENOMEM; 2380 } 2381 EXPORT_SYMBOL(ceph_osdc_setup); 2382 2383 void ceph_osdc_cleanup(void) 2384 { 2385 BUG_ON(!ceph_osd_request_cache); 2386 kmem_cache_destroy(ceph_osd_request_cache); 2387 ceph_osd_request_cache = NULL; 2388 } 2389 EXPORT_SYMBOL(ceph_osdc_cleanup); 2390 2391 /* 2392 * handle incoming message 2393 */ 2394 static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 2395 { 2396 struct ceph_osd *osd = con->private; 2397 struct ceph_osd_client *osdc; 2398 int type = le16_to_cpu(msg->hdr.type); 2399 2400 if (!osd) 2401 goto out; 2402 osdc = osd->o_osdc; 2403 2404 switch (type) { 2405 case CEPH_MSG_OSD_MAP: 2406 ceph_osdc_handle_map(osdc, msg); 2407 break; 2408 case CEPH_MSG_OSD_OPREPLY: 2409 handle_reply(osdc, msg, con); 2410 break; 2411 case CEPH_MSG_WATCH_NOTIFY: 2412 handle_watch_notify(osdc, msg); 2413 break; 2414 2415 default: 2416 pr_err("received unknown message type %d %s\n", type, 2417 ceph_msg_type_name(type)); 2418 } 2419 out: 2420 ceph_msg_put(msg); 2421 } 2422 2423 /* 2424 * lookup and return message for incoming reply. set up reply message 2425 * pages. 2426 */ 2427 static struct ceph_msg *get_reply(struct ceph_connection *con, 2428 struct ceph_msg_header *hdr, 2429 int *skip) 2430 { 2431 struct ceph_osd *osd = con->private; 2432 struct ceph_osd_client *osdc = osd->o_osdc; 2433 struct ceph_msg *m; 2434 struct ceph_osd_request *req; 2435 int front = le32_to_cpu(hdr->front_len); 2436 int data_len = le32_to_cpu(hdr->data_len); 2437 u64 tid; 2438 2439 tid = le64_to_cpu(hdr->tid); 2440 mutex_lock(&osdc->request_mutex); 2441 req = __lookup_request(osdc, tid); 2442 if (!req) { 2443 *skip = 1; 2444 m = NULL; 2445 dout("get_reply unknown tid %llu from osd%d\n", tid, 2446 osd->o_osd); 2447 goto out; 2448 } 2449 2450 if (req->r_reply->con) 2451 dout("%s revoking msg %p from old con %p\n", __func__, 2452 req->r_reply, req->r_reply->con); 2453 ceph_msg_revoke_incoming(req->r_reply); 2454 2455 if (front > req->r_reply->front.iov_len) { 2456 pr_warning("get_reply front %d > preallocated %d\n", 2457 front, (int)req->r_reply->front.iov_len); 2458 m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); 2459 if (!m) 2460 goto out; 2461 ceph_msg_put(req->r_reply); 2462 req->r_reply = m; 2463 } 2464 m = ceph_msg_get(req->r_reply); 2465 2466 if (data_len > 0) { 2467 struct ceph_osd_data *osd_data; 2468 2469 /* 2470 * XXX This is assuming there is only one op containing 2471 * XXX page data. Probably OK for reads, but this 2472 * XXX ought to be done more generally. 2473 */ 2474 osd_data = osd_req_op_extent_osd_data(req, 0); 2475 if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 2476 if (osd_data->pages && 2477 unlikely(osd_data->length < data_len)) { 2478 2479 pr_warning("tid %lld reply has %d bytes " 2480 "we had only %llu bytes ready\n", 2481 tid, data_len, osd_data->length); 2482 *skip = 1; 2483 ceph_msg_put(m); 2484 m = NULL; 2485 goto out; 2486 } 2487 } 2488 } 2489 *skip = 0; 2490 dout("get_reply tid %lld %p\n", tid, m); 2491 2492 out: 2493 mutex_unlock(&osdc->request_mutex); 2494 return m; 2495 2496 } 2497 2498 static struct ceph_msg *alloc_msg(struct ceph_connection *con, 2499 struct ceph_msg_header *hdr, 2500 int *skip) 2501 { 2502 struct ceph_osd *osd = con->private; 2503 int type = le16_to_cpu(hdr->type); 2504 int front = le32_to_cpu(hdr->front_len); 2505 2506 *skip = 0; 2507 switch (type) { 2508 case CEPH_MSG_OSD_MAP: 2509 case CEPH_MSG_WATCH_NOTIFY: 2510 return ceph_msg_new(type, front, GFP_NOFS, false); 2511 case CEPH_MSG_OSD_OPREPLY: 2512 return get_reply(con, hdr, skip); 2513 default: 2514 pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 2515 osd->o_osd); 2516 *skip = 1; 2517 return NULL; 2518 } 2519 } 2520 2521 /* 2522 * Wrappers to refcount containing ceph_osd struct 2523 */ 2524 static struct ceph_connection *get_osd_con(struct ceph_connection *con) 2525 { 2526 struct ceph_osd *osd = con->private; 2527 if (get_osd(osd)) 2528 return con; 2529 return NULL; 2530 } 2531 2532 static void put_osd_con(struct ceph_connection *con) 2533 { 2534 struct ceph_osd *osd = con->private; 2535 put_osd(osd); 2536 } 2537 2538 /* 2539 * authentication 2540 */ 2541 /* 2542 * Note: returned pointer is the address of a structure that's 2543 * managed separately. Caller must *not* attempt to free it. 2544 */ 2545 static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 2546 int *proto, int force_new) 2547 { 2548 struct ceph_osd *o = con->private; 2549 struct ceph_osd_client *osdc = o->o_osdc; 2550 struct ceph_auth_client *ac = osdc->client->monc.auth; 2551 struct ceph_auth_handshake *auth = &o->o_auth; 2552 2553 if (force_new && auth->authorizer) { 2554 ceph_auth_destroy_authorizer(ac, auth->authorizer); 2555 auth->authorizer = NULL; 2556 } 2557 if (!auth->authorizer) { 2558 int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2559 auth); 2560 if (ret) 2561 return ERR_PTR(ret); 2562 } else { 2563 int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2564 auth); 2565 if (ret) 2566 return ERR_PTR(ret); 2567 } 2568 *proto = ac->protocol; 2569 2570 return auth; 2571 } 2572 2573 2574 static int verify_authorizer_reply(struct ceph_connection *con, int len) 2575 { 2576 struct ceph_osd *o = con->private; 2577 struct ceph_osd_client *osdc = o->o_osdc; 2578 struct ceph_auth_client *ac = osdc->client->monc.auth; 2579 2580 return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 2581 } 2582 2583 static int invalidate_authorizer(struct ceph_connection *con) 2584 { 2585 struct ceph_osd *o = con->private; 2586 struct ceph_osd_client *osdc = o->o_osdc; 2587 struct ceph_auth_client *ac = osdc->client->monc.auth; 2588 2589 ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 2590 return ceph_monc_validate_auth(&osdc->client->monc); 2591 } 2592 2593 static const struct ceph_connection_operations osd_con_ops = { 2594 .get = get_osd_con, 2595 .put = put_osd_con, 2596 .dispatch = dispatch, 2597 .get_authorizer = get_authorizer, 2598 .verify_authorizer_reply = verify_authorizer_reply, 2599 .invalidate_authorizer = invalidate_authorizer, 2600 .alloc_msg = alloc_msg, 2601 .fault = osd_reset, 2602 }; 2603