13d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 23d14c5d2SYehuda Sadeh 33d14c5d2SYehuda Sadeh #include <linux/module.h> 43d14c5d2SYehuda Sadeh #include <linux/err.h> 53d14c5d2SYehuda Sadeh #include <linux/highmem.h> 63d14c5d2SYehuda Sadeh #include <linux/mm.h> 73d14c5d2SYehuda Sadeh #include <linux/pagemap.h> 83d14c5d2SYehuda Sadeh #include <linux/slab.h> 93d14c5d2SYehuda Sadeh #include <linux/uaccess.h> 103d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 113d14c5d2SYehuda Sadeh #include <linux/bio.h> 123d14c5d2SYehuda Sadeh #endif 133d14c5d2SYehuda Sadeh 143d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 153d14c5d2SYehuda Sadeh #include <linux/ceph/osd_client.h> 163d14c5d2SYehuda Sadeh #include <linux/ceph/messenger.h> 173d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 183d14c5d2SYehuda Sadeh #include <linux/ceph/auth.h> 193d14c5d2SYehuda Sadeh #include <linux/ceph/pagelist.h> 203d14c5d2SYehuda Sadeh 213d14c5d2SYehuda Sadeh #define OSD_OP_FRONT_LEN 4096 223d14c5d2SYehuda Sadeh #define OSD_OPREPLY_FRONT_LEN 512 233d14c5d2SYehuda Sadeh 243d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops; 253d14c5d2SYehuda Sadeh 26f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc); 276f6c7006SSage Weil static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); 28a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 29a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 30a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 31a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 3256e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 33a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 343d14c5d2SYehuda Sadeh 353d14c5d2SYehuda Sadeh /* 363d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 373d14c5d2SYehuda Sadeh * 383d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 393d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 403d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 413d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 423d14c5d2SYehuda Sadeh * access to storage. 433d14c5d2SYehuda Sadeh * 443d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 453d14c5d2SYehuda Sadeh * are described by the osd map. 463d14c5d2SYehuda Sadeh * 473d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 483d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 493d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 503d14c5d2SYehuda Sadeh * channel with an OSD is reset. 513d14c5d2SYehuda Sadeh */ 523d14c5d2SYehuda Sadeh 533d14c5d2SYehuda Sadeh /* 543d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 553d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 563d14c5d2SYehuda Sadeh * object boundary. 573d14c5d2SYehuda Sadeh * 583d14c5d2SYehuda Sadeh * fill osd op in request message. 593d14c5d2SYehuda Sadeh */ 60dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 61a19dadfbSAlex Elder u64 *objnum, u64 *objoff, u64 *objlen) 623d14c5d2SYehuda Sadeh { 6360e56f13SAlex Elder u64 orig_len = *plen; 64d63b77f4SSage Weil int r; 653d14c5d2SYehuda Sadeh 6660e56f13SAlex Elder /* object extent? */ 6775d1c941SAlex Elder r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, 6875d1c941SAlex Elder objoff, objlen); 69d63b77f4SSage Weil if (r < 0) 70d63b77f4SSage Weil return r; 7175d1c941SAlex Elder if (*objlen < orig_len) { 7275d1c941SAlex Elder *plen = *objlen; 7360e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 7460e56f13SAlex Elder orig_len - *plen, off, *plen); 7560e56f13SAlex Elder } 7660e56f13SAlex Elder 7775d1c941SAlex Elder dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); 783d14c5d2SYehuda Sadeh 793ff5f385SAlex Elder return 0; 803d14c5d2SYehuda Sadeh } 813d14c5d2SYehuda Sadeh 823d14c5d2SYehuda Sadeh /* 833d14c5d2SYehuda Sadeh * requests 843d14c5d2SYehuda Sadeh */ 853d14c5d2SYehuda Sadeh void ceph_osdc_release_request(struct kref *kref) 863d14c5d2SYehuda Sadeh { 87e0c59487SAlex Elder int num_pages; 883d14c5d2SYehuda Sadeh struct ceph_osd_request *req = container_of(kref, 893d14c5d2SYehuda Sadeh struct ceph_osd_request, 903d14c5d2SYehuda Sadeh r_kref); 913d14c5d2SYehuda Sadeh 923d14c5d2SYehuda Sadeh if (req->r_request) 933d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 943d14c5d2SYehuda Sadeh if (req->r_con_filling_msg) { 959cbb1d72SAlex Elder dout("%s revoking msg %p from con %p\n", __func__, 969cbb1d72SAlex Elder req->r_reply, req->r_con_filling_msg); 978921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 980d47766fSSage Weil req->r_con_filling_msg->ops->put(req->r_con_filling_msg); 999cbb1d72SAlex Elder req->r_con_filling_msg = NULL; 1003d14c5d2SYehuda Sadeh } 101ab8cb34aSAlex Elder if (req->r_reply) 102ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 1030fff87ecSAlex Elder 1040fff87ecSAlex Elder if (req->r_data_in.type == CEPH_OSD_DATA_TYPE_PAGES && 105e0c59487SAlex Elder req->r_data_in.own_pages) { 106e0c59487SAlex Elder num_pages = calc_pages_for((u64)req->r_data_in.alignment, 107e0c59487SAlex Elder (u64)req->r_data_in.length); 108e0c59487SAlex Elder ceph_release_page_vector(req->r_data_in.pages, num_pages); 109e0c59487SAlex Elder } 1100fff87ecSAlex Elder if (req->r_data_out.type == CEPH_OSD_DATA_TYPE_PAGES && 111e0c59487SAlex Elder req->r_data_out.own_pages) { 112e0c59487SAlex Elder num_pages = calc_pages_for((u64)req->r_data_out.alignment, 113e0c59487SAlex Elder (u64)req->r_data_out.length); 114e0c59487SAlex Elder ceph_release_page_vector(req->r_data_out.pages, num_pages); 115e0c59487SAlex Elder } 1160fff87ecSAlex Elder 1173d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 1183d14c5d2SYehuda Sadeh if (req->r_mempool) 1193d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 1203d14c5d2SYehuda Sadeh else 1213d14c5d2SYehuda Sadeh kfree(req); 1223d14c5d2SYehuda Sadeh } 1233d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_release_request); 1243d14c5d2SYehuda Sadeh 1253d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 1263d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 1271b83bef2SSage Weil unsigned int num_ops, 1283d14c5d2SYehuda Sadeh bool use_mempool, 12954a54007SAlex Elder gfp_t gfp_flags) 1303d14c5d2SYehuda Sadeh { 1313d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1323d14c5d2SYehuda Sadeh struct ceph_msg *msg; 1331b83bef2SSage Weil size_t msg_size; 1343d14c5d2SYehuda Sadeh 1351b83bef2SSage Weil msg_size = 4 + 4 + 8 + 8 + 4+8; 1361b83bef2SSage Weil msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 1371b83bef2SSage Weil msg_size += 1 + 8 + 4 + 4; /* pg_t */ 1381b83bef2SSage Weil msg_size += 4 + MAX_OBJ_NAME_SIZE; 1391b83bef2SSage Weil msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); 1401b83bef2SSage Weil msg_size += 8; /* snapid */ 1411b83bef2SSage Weil msg_size += 8; /* snap_seq */ 1421b83bef2SSage Weil msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ 1431b83bef2SSage Weil msg_size += 4; 1443d14c5d2SYehuda Sadeh 1453d14c5d2SYehuda Sadeh if (use_mempool) { 1463d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 1473d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 1483d14c5d2SYehuda Sadeh } else { 1493d14c5d2SYehuda Sadeh req = kzalloc(sizeof(*req), gfp_flags); 1503d14c5d2SYehuda Sadeh } 1513d14c5d2SYehuda Sadeh if (req == NULL) 1523d14c5d2SYehuda Sadeh return NULL; 1533d14c5d2SYehuda Sadeh 1543d14c5d2SYehuda Sadeh req->r_osdc = osdc; 1553d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 1563d14c5d2SYehuda Sadeh 1573d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 1583d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 1593d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 160a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 1613d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 162a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 163a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_osd); 164935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 165cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 166cd43045cSSage Weil 1673d14c5d2SYehuda Sadeh /* create reply message */ 1683d14c5d2SYehuda Sadeh if (use_mempool) 1693d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 1703d14c5d2SYehuda Sadeh else 1713d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 172b61c2763SSage Weil OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 1733d14c5d2SYehuda Sadeh if (!msg) { 1743d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 1753d14c5d2SYehuda Sadeh return NULL; 1763d14c5d2SYehuda Sadeh } 1773d14c5d2SYehuda Sadeh req->r_reply = msg; 1783d14c5d2SYehuda Sadeh 1790fff87ecSAlex Elder req->r_data_in.type = CEPH_OSD_DATA_TYPE_NONE; 1800fff87ecSAlex Elder req->r_data_out.type = CEPH_OSD_DATA_TYPE_NONE; 181d50b409fSSage Weil 1823d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 1833d14c5d2SYehuda Sadeh if (use_mempool) 1843d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 1853d14c5d2SYehuda Sadeh else 186b61c2763SSage Weil msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 1873d14c5d2SYehuda Sadeh if (!msg) { 1883d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 1893d14c5d2SYehuda Sadeh return NULL; 1903d14c5d2SYehuda Sadeh } 1913d14c5d2SYehuda Sadeh 1923d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 1933d14c5d2SYehuda Sadeh 1943d14c5d2SYehuda Sadeh req->r_request = msg; 1953d14c5d2SYehuda Sadeh 1963d14c5d2SYehuda Sadeh return req; 1973d14c5d2SYehuda Sadeh } 1983d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 1993d14c5d2SYehuda Sadeh 200a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 201a8dd0a37SAlex Elder { 202a8dd0a37SAlex Elder switch (opcode) { 203a8dd0a37SAlex Elder case CEPH_OSD_OP_READ: 204a8dd0a37SAlex Elder case CEPH_OSD_OP_STAT: 205a8dd0a37SAlex Elder case CEPH_OSD_OP_MAPEXT: 206a8dd0a37SAlex Elder case CEPH_OSD_OP_MASKTRUNC: 207a8dd0a37SAlex Elder case CEPH_OSD_OP_SPARSE_READ: 208a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY: 209a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY_ACK: 210a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_VER: 211a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITE: 212a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITEFULL: 213a8dd0a37SAlex Elder case CEPH_OSD_OP_TRUNCATE: 214a8dd0a37SAlex Elder case CEPH_OSD_OP_ZERO: 215a8dd0a37SAlex Elder case CEPH_OSD_OP_DELETE: 216a8dd0a37SAlex Elder case CEPH_OSD_OP_APPEND: 217a8dd0a37SAlex Elder case CEPH_OSD_OP_STARTSYNC: 218a8dd0a37SAlex Elder case CEPH_OSD_OP_SETTRUNC: 219a8dd0a37SAlex Elder case CEPH_OSD_OP_TRIMTRUNC: 220a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPUP: 221a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPPUT: 222a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPGET: 223a8dd0a37SAlex Elder case CEPH_OSD_OP_CREATE: 224a8dd0a37SAlex Elder case CEPH_OSD_OP_ROLLBACK: 225a8dd0a37SAlex Elder case CEPH_OSD_OP_WATCH: 226a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETKEYS: 227a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALS: 228a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETHEADER: 229a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALSBYKEYS: 230a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETVALS: 231a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETHEADER: 232a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPCLEAR: 233a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPRMKEYS: 234a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAP_CMP: 235a8dd0a37SAlex Elder case CEPH_OSD_OP_CLONERANGE: 236a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_SRC_VERSION: 237a8dd0a37SAlex Elder case CEPH_OSD_OP_SRC_CMPXATTR: 238a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTR: 239a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTRS: 240a8dd0a37SAlex Elder case CEPH_OSD_OP_CMPXATTR: 241a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTR: 242a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTRS: 243a8dd0a37SAlex Elder case CEPH_OSD_OP_RESETXATTRS: 244a8dd0a37SAlex Elder case CEPH_OSD_OP_RMXATTR: 245a8dd0a37SAlex Elder case CEPH_OSD_OP_PULL: 246a8dd0a37SAlex Elder case CEPH_OSD_OP_PUSH: 247a8dd0a37SAlex Elder case CEPH_OSD_OP_BALANCEREADS: 248a8dd0a37SAlex Elder case CEPH_OSD_OP_UNBALANCEREADS: 249a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB: 250a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_RESERVE: 251a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_UNRESERVE: 252a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_STOP: 253a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_MAP: 254a8dd0a37SAlex Elder case CEPH_OSD_OP_WRLOCK: 255a8dd0a37SAlex Elder case CEPH_OSD_OP_WRUNLOCK: 256a8dd0a37SAlex Elder case CEPH_OSD_OP_RDLOCK: 257a8dd0a37SAlex Elder case CEPH_OSD_OP_RDUNLOCK: 258a8dd0a37SAlex Elder case CEPH_OSD_OP_UPLOCK: 259a8dd0a37SAlex Elder case CEPH_OSD_OP_DNLOCK: 260a8dd0a37SAlex Elder case CEPH_OSD_OP_CALL: 261a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS: 262a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS_FILTER: 263a8dd0a37SAlex Elder return true; 264a8dd0a37SAlex Elder default: 265a8dd0a37SAlex Elder return false; 266a8dd0a37SAlex Elder } 267a8dd0a37SAlex Elder } 268a8dd0a37SAlex Elder 26933803f33SAlex Elder /* 27033803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 27133803f33SAlex Elder * other information associated with them. It also serves as a 27233803f33SAlex Elder * common init routine for all the other init functions, below. 27333803f33SAlex Elder */ 27433803f33SAlex Elder void osd_req_op_init(struct ceph_osd_req_op *op, u16 opcode) 27533803f33SAlex Elder { 27633803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 27733803f33SAlex Elder 27833803f33SAlex Elder memset(op, 0, sizeof (*op)); 27933803f33SAlex Elder 28033803f33SAlex Elder op->op = opcode; 28133803f33SAlex Elder } 28233803f33SAlex Elder 28333803f33SAlex Elder void osd_req_op_extent_init(struct ceph_osd_req_op *op, u16 opcode, 28433803f33SAlex Elder u64 offset, u64 length, 28533803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 28633803f33SAlex Elder { 28733803f33SAlex Elder size_t payload_len = 0; 28833803f33SAlex Elder 28933803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); 29033803f33SAlex Elder 29133803f33SAlex Elder osd_req_op_init(op, opcode); 29233803f33SAlex Elder 29333803f33SAlex Elder op->extent.offset = offset; 29433803f33SAlex Elder op->extent.length = length; 29533803f33SAlex Elder op->extent.truncate_size = truncate_size; 29633803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 29733803f33SAlex Elder if (opcode == CEPH_OSD_OP_WRITE) 29833803f33SAlex Elder payload_len += length; 29933803f33SAlex Elder 30033803f33SAlex Elder op->payload_len = payload_len; 30133803f33SAlex Elder } 30233803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 30333803f33SAlex Elder 30433803f33SAlex Elder void osd_req_op_cls_init(struct ceph_osd_req_op *op, u16 opcode, 30533803f33SAlex Elder const char *class, const char *method, 30633803f33SAlex Elder const void *request_data, size_t request_data_size) 30733803f33SAlex Elder { 30833803f33SAlex Elder size_t payload_len = 0; 30933803f33SAlex Elder size_t size; 31033803f33SAlex Elder 31133803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 31233803f33SAlex Elder 31333803f33SAlex Elder osd_req_op_init(op, opcode); 31433803f33SAlex Elder 31533803f33SAlex Elder op->cls.class_name = class; 31633803f33SAlex Elder size = strlen(class); 31733803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 31833803f33SAlex Elder op->cls.class_len = size; 31933803f33SAlex Elder payload_len += size; 32033803f33SAlex Elder 32133803f33SAlex Elder op->cls.method_name = method; 32233803f33SAlex Elder size = strlen(method); 32333803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 32433803f33SAlex Elder op->cls.method_len = size; 32533803f33SAlex Elder payload_len += size; 32633803f33SAlex Elder 32733803f33SAlex Elder op->cls.indata = request_data; 32833803f33SAlex Elder BUG_ON(request_data_size > (size_t) U32_MAX); 32933803f33SAlex Elder op->cls.indata_len = (u32) request_data_size; 33033803f33SAlex Elder payload_len += request_data_size; 33133803f33SAlex Elder 33233803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 33333803f33SAlex Elder 33433803f33SAlex Elder op->payload_len = payload_len; 33533803f33SAlex Elder } 33633803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 33733803f33SAlex Elder 33833803f33SAlex Elder void osd_req_op_watch_init(struct ceph_osd_req_op *op, u16 opcode, 33933803f33SAlex Elder u64 cookie, u64 version, int flag) 34033803f33SAlex Elder { 34133803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 34233803f33SAlex Elder 34333803f33SAlex Elder osd_req_op_init(op, opcode); 34433803f33SAlex Elder 34533803f33SAlex Elder op->watch.cookie = cookie; 34633803f33SAlex Elder /* op->watch.ver = version; */ /* XXX 3847 */ 34733803f33SAlex Elder op->watch.ver = cpu_to_le64(version); 34833803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 34933803f33SAlex Elder op->watch.flag = (u8) 1; 35033803f33SAlex Elder } 35133803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 35233803f33SAlex Elder 353175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 3543d14c5d2SYehuda Sadeh struct ceph_osd_op *dst, 3553d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src) 3563d14c5d2SYehuda Sadeh { 357175face2SAlex Elder u64 out_data_len = 0; 35895e072ebSAlex Elder struct ceph_pagelist *pagelist; 359175face2SAlex Elder 360a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 361a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 362a8dd0a37SAlex Elder 363a8dd0a37SAlex Elder return 0; 364a8dd0a37SAlex Elder } 3653d14c5d2SYehuda Sadeh 366065a68f9SAlex Elder switch (src->op) { 367fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 368fbfab539SAlex Elder break; 3693d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 3703d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 371175face2SAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 372175face2SAlex Elder out_data_len = src->extent.length; 373175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 374175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 3753d14c5d2SYehuda Sadeh dst->extent.truncate_size = 3763d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 3773d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 3783d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 3793d14c5d2SYehuda Sadeh break; 3803d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 38195e072ebSAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 38295e072ebSAlex Elder BUG_ON(!pagelist); 38395e072ebSAlex Elder ceph_pagelist_init(pagelist); 38495e072ebSAlex Elder 3853d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 3863d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 3873d14c5d2SYehuda Sadeh dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 38895e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.class_name, 3893d14c5d2SYehuda Sadeh src->cls.class_len); 39095e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.method_name, 3913d14c5d2SYehuda Sadeh src->cls.method_len); 39295e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.indata, 3933d14c5d2SYehuda Sadeh src->cls.indata_len); 39495e072ebSAlex Elder 39595e072ebSAlex Elder req->r_data_out.type = CEPH_OSD_DATA_TYPE_PAGELIST; 39695e072ebSAlex Elder req->r_data_out.pagelist = pagelist; 39795e072ebSAlex Elder out_data_len = pagelist->length; 3983d14c5d2SYehuda Sadeh break; 3993d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 4003d14c5d2SYehuda Sadeh break; 401a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 402a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 403a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 404a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 405a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 406a40c4f10SYehuda Sadeh break; 4073d14c5d2SYehuda Sadeh default: 4084c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 4098f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 4104c46459cSAlex Elder WARN_ON(1); 411a8dd0a37SAlex Elder 412a8dd0a37SAlex Elder return 0; 4133d14c5d2SYehuda Sadeh } 414a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 4153d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 416175face2SAlex Elder 417175face2SAlex Elder return out_data_len; 4183d14c5d2SYehuda Sadeh } 4193d14c5d2SYehuda Sadeh 4203d14c5d2SYehuda Sadeh /* 4213d14c5d2SYehuda Sadeh * build new request AND message 4223d14c5d2SYehuda Sadeh * 4233d14c5d2SYehuda Sadeh */ 4243d14c5d2SYehuda Sadeh void ceph_osdc_build_request(struct ceph_osd_request *req, 425175face2SAlex Elder u64 off, unsigned int num_ops, 4263d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_ops, 4274d6b250bSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 428af77f26cSAlex Elder struct timespec *mtime) 4293d14c5d2SYehuda Sadeh { 4303d14c5d2SYehuda Sadeh struct ceph_msg *msg = req->r_request; 4313d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_op; 4323d14c5d2SYehuda Sadeh void *p; 4331b83bef2SSage Weil size_t msg_size; 4343d14c5d2SYehuda Sadeh int flags = req->r_flags; 435f44246e3SAlex Elder u64 data_len; 4363d14c5d2SYehuda Sadeh int i; 4373d14c5d2SYehuda Sadeh 4381b83bef2SSage Weil req->r_num_ops = num_ops; 4391b83bef2SSage Weil req->r_snapid = snap_id; 4403d14c5d2SYehuda Sadeh req->r_snapc = ceph_get_snap_context(snapc); 4413d14c5d2SYehuda Sadeh 4421b83bef2SSage Weil /* encode request */ 4431b83bef2SSage Weil msg->hdr.version = cpu_to_le16(4); 4443d14c5d2SYehuda Sadeh 4451b83bef2SSage Weil p = msg->front.iov_base; 4461b83bef2SSage Weil ceph_encode_32(&p, 1); /* client_inc is always 1 */ 4471b83bef2SSage Weil req->r_request_osdmap_epoch = p; 4481b83bef2SSage Weil p += 4; 4491b83bef2SSage Weil req->r_request_flags = p; 4501b83bef2SSage Weil p += 4; 4511b83bef2SSage Weil if (req->r_flags & CEPH_OSD_FLAG_WRITE) 4521b83bef2SSage Weil ceph_encode_timespec(p, mtime); 4531b83bef2SSage Weil p += sizeof(struct ceph_timespec); 4541b83bef2SSage Weil req->r_request_reassert_version = p; 4551b83bef2SSage Weil p += sizeof(struct ceph_eversion); /* will get filled in */ 4561b83bef2SSage Weil 4571b83bef2SSage Weil /* oloc */ 4581b83bef2SSage Weil ceph_encode_8(&p, 4); 4591b83bef2SSage Weil ceph_encode_8(&p, 4); 4601b83bef2SSage Weil ceph_encode_32(&p, 8 + 4 + 4); 4611b83bef2SSage Weil req->r_request_pool = p; 4621b83bef2SSage Weil p += 8; 4631b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 4641b83bef2SSage Weil ceph_encode_32(&p, 0); /* key len */ 4651b83bef2SSage Weil 4661b83bef2SSage Weil ceph_encode_8(&p, 1); 4671b83bef2SSage Weil req->r_request_pgid = p; 4681b83bef2SSage Weil p += 8 + 4; 4691b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 4701b83bef2SSage Weil 4711b83bef2SSage Weil /* oid */ 4721b83bef2SSage Weil ceph_encode_32(&p, req->r_oid_len); 473af77f26cSAlex Elder memcpy(p, req->r_oid, req->r_oid_len); 4741b83bef2SSage Weil dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); 475af77f26cSAlex Elder p += req->r_oid_len; 4763d14c5d2SYehuda Sadeh 477175face2SAlex Elder /* ops--can imply data */ 4781b83bef2SSage Weil ceph_encode_16(&p, num_ops); 4793d14c5d2SYehuda Sadeh src_op = src_ops; 4801b83bef2SSage Weil req->r_request_ops = p; 481175face2SAlex Elder data_len = 0; 4821b83bef2SSage Weil for (i = 0; i < num_ops; i++, src_op++) { 483175face2SAlex Elder data_len += osd_req_encode_op(req, p, src_op); 4841b83bef2SSage Weil p += sizeof(struct ceph_osd_op); 4851b83bef2SSage Weil } 4863d14c5d2SYehuda Sadeh 4871b83bef2SSage Weil /* snaps */ 4881b83bef2SSage Weil ceph_encode_64(&p, req->r_snapid); 4891b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 4901b83bef2SSage Weil ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 4911b83bef2SSage Weil if (req->r_snapc) { 4923d14c5d2SYehuda Sadeh for (i = 0; i < snapc->num_snaps; i++) { 4931b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc->snaps[i]); 4943d14c5d2SYehuda Sadeh } 4953d14c5d2SYehuda Sadeh } 4963d14c5d2SYehuda Sadeh 4971b83bef2SSage Weil req->r_request_attempts = p; 4981b83bef2SSage Weil p += 4; 4991b83bef2SSage Weil 500175face2SAlex Elder /* data */ 5010baa1bd9SAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 5020baa1bd9SAlex Elder u16 data_off; 5030baa1bd9SAlex Elder 5040baa1bd9SAlex Elder /* 5050baa1bd9SAlex Elder * The header "data_off" is a hint to the receiver 5060baa1bd9SAlex Elder * allowing it to align received data into its 5070baa1bd9SAlex Elder * buffers such that there's no need to re-copy 5080baa1bd9SAlex Elder * it before writing it to disk (direct I/O). 5090baa1bd9SAlex Elder */ 5100baa1bd9SAlex Elder data_off = (u16) (off & 0xffff); 5110baa1bd9SAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 5120baa1bd9SAlex Elder } 513f44246e3SAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 514c5c6b19dSSage Weil 5153d14c5d2SYehuda Sadeh BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 5163d14c5d2SYehuda Sadeh msg_size = p - msg->front.iov_base; 5173d14c5d2SYehuda Sadeh msg->front.iov_len = msg_size; 5183d14c5d2SYehuda Sadeh msg->hdr.front_len = cpu_to_le32(msg_size); 5191b83bef2SSage Weil 5201b83bef2SSage Weil dout("build_request msg_size was %d num_ops %d\n", (int)msg_size, 5211b83bef2SSage Weil num_ops); 5223d14c5d2SYehuda Sadeh return; 5233d14c5d2SYehuda Sadeh } 5243d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_build_request); 5253d14c5d2SYehuda Sadeh 5263d14c5d2SYehuda Sadeh /* 5273d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 5283d14c5d2SYehuda Sadeh * extent as needed. 5293d14c5d2SYehuda Sadeh * 5303d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 5313d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 5323d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 5333d14c5d2SYehuda Sadeh * 5343d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 5353d14c5d2SYehuda Sadeh * data quickly. 5363d14c5d2SYehuda Sadeh */ 5373d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 5383d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 5393d14c5d2SYehuda Sadeh struct ceph_vino vino, 5403d14c5d2SYehuda Sadeh u64 off, u64 *plen, 5413d14c5d2SYehuda Sadeh int opcode, int flags, 5423d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5433d14c5d2SYehuda Sadeh int do_sync, 5443d14c5d2SYehuda Sadeh u32 truncate_seq, 5453d14c5d2SYehuda Sadeh u64 truncate_size, 5463d14c5d2SYehuda Sadeh struct timespec *mtime, 547153e5167SAlex Elder bool use_mempool) 5483d14c5d2SYehuda Sadeh { 549ae7ca4a3SAlex Elder struct ceph_osd_req_op ops[2]; 5503d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 551d18d1e28SAlex Elder unsigned int num_op = do_sync ? 2 : 1; 55275d1c941SAlex Elder u64 objnum = 0; 55375d1c941SAlex Elder u64 objoff = 0; 55475d1c941SAlex Elder u64 objlen = 0; 555d18d1e28SAlex Elder u32 object_size; 556d18d1e28SAlex Elder u64 object_base; 5576816282dSSage Weil int r; 5583d14c5d2SYehuda Sadeh 559d18d1e28SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); 5603d14c5d2SYehuda Sadeh 561ae7ca4a3SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_op, use_mempool, 562ae7ca4a3SAlex Elder GFP_NOFS); 5634ad12621SSage Weil if (!req) 5646816282dSSage Weil return ERR_PTR(-ENOMEM); 565d178a9e7SAlex Elder req->r_flags = flags; 5663d14c5d2SYehuda Sadeh 5673d14c5d2SYehuda Sadeh /* calculate max write size */ 568a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 5693ff5f385SAlex Elder if (r < 0) { 5703ff5f385SAlex Elder ceph_osdc_put_request(req); 5716816282dSSage Weil return ERR_PTR(r); 5723ff5f385SAlex Elder } 573a19dadfbSAlex Elder 574d18d1e28SAlex Elder object_size = le32_to_cpu(layout->fl_object_size); 575d18d1e28SAlex Elder object_base = off - objoff; 576d18d1e28SAlex Elder if (truncate_size <= object_base) { 577d18d1e28SAlex Elder truncate_size = 0; 578d18d1e28SAlex Elder } else { 579d18d1e28SAlex Elder truncate_size -= object_base; 580d18d1e28SAlex Elder if (truncate_size > object_size) 581d18d1e28SAlex Elder truncate_size = object_size; 582d18d1e28SAlex Elder } 583d18d1e28SAlex Elder 584b0270324SAlex Elder osd_req_op_extent_init(&ops[0], opcode, objoff, objlen, 585b0270324SAlex Elder truncate_size, truncate_seq); 586d18d1e28SAlex Elder if (do_sync) 587b0270324SAlex Elder osd_req_op_init(&ops[1], CEPH_OSD_OP_STARTSYNC); 588d18d1e28SAlex Elder 5893d14c5d2SYehuda Sadeh req->r_file_layout = *layout; /* keep a copy */ 5903d14c5d2SYehuda Sadeh 59175d1c941SAlex Elder snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", 59275d1c941SAlex Elder vino.ino, objnum); 593dbe0fc41SAlex Elder req->r_oid_len = strlen(req->r_oid); 594dbe0fc41SAlex Elder 595175face2SAlex Elder ceph_osdc_build_request(req, off, num_op, ops, 596ae7ca4a3SAlex Elder snapc, vino.snap, mtime); 5973d14c5d2SYehuda Sadeh 5983d14c5d2SYehuda Sadeh return req; 5993d14c5d2SYehuda Sadeh } 6003d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 6013d14c5d2SYehuda Sadeh 6023d14c5d2SYehuda Sadeh /* 6033d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 6043d14c5d2SYehuda Sadeh */ 6053d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 6063d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 6073d14c5d2SYehuda Sadeh { 6083d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 6093d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 6103d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 6113d14c5d2SYehuda Sadeh 6123d14c5d2SYehuda Sadeh while (*p) { 6133d14c5d2SYehuda Sadeh parent = *p; 6143d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 6153d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 6163d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 6173d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 6183d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 6193d14c5d2SYehuda Sadeh else 6203d14c5d2SYehuda Sadeh BUG(); 6213d14c5d2SYehuda Sadeh } 6223d14c5d2SYehuda Sadeh 6233d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 6243d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 6253d14c5d2SYehuda Sadeh } 6263d14c5d2SYehuda Sadeh 6273d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 6283d14c5d2SYehuda Sadeh u64 tid) 6293d14c5d2SYehuda Sadeh { 6303d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 6313d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 6323d14c5d2SYehuda Sadeh 6333d14c5d2SYehuda Sadeh while (n) { 6343d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 6353d14c5d2SYehuda Sadeh if (tid < req->r_tid) 6363d14c5d2SYehuda Sadeh n = n->rb_left; 6373d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 6383d14c5d2SYehuda Sadeh n = n->rb_right; 6393d14c5d2SYehuda Sadeh else 6403d14c5d2SYehuda Sadeh return req; 6413d14c5d2SYehuda Sadeh } 6423d14c5d2SYehuda Sadeh return NULL; 6433d14c5d2SYehuda Sadeh } 6443d14c5d2SYehuda Sadeh 6453d14c5d2SYehuda Sadeh static struct ceph_osd_request * 6463d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 6473d14c5d2SYehuda Sadeh u64 tid) 6483d14c5d2SYehuda Sadeh { 6493d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 6503d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 6513d14c5d2SYehuda Sadeh 6523d14c5d2SYehuda Sadeh while (n) { 6533d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 6543d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 6553d14c5d2SYehuda Sadeh if (!n->rb_left) 6563d14c5d2SYehuda Sadeh return req; 6573d14c5d2SYehuda Sadeh n = n->rb_left; 6583d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 6593d14c5d2SYehuda Sadeh n = n->rb_right; 6603d14c5d2SYehuda Sadeh } else { 6613d14c5d2SYehuda Sadeh return req; 6623d14c5d2SYehuda Sadeh } 6633d14c5d2SYehuda Sadeh } 6643d14c5d2SYehuda Sadeh return NULL; 6653d14c5d2SYehuda Sadeh } 6663d14c5d2SYehuda Sadeh 6676f6c7006SSage Weil /* 6686f6c7006SSage Weil * Resubmit requests pending on the given osd. 6696f6c7006SSage Weil */ 6706f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 6716f6c7006SSage Weil struct ceph_osd *osd) 6726f6c7006SSage Weil { 673a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 674e02493c0SAlex Elder LIST_HEAD(resend); 6756f6c7006SSage Weil int err; 6766f6c7006SSage Weil 6776f6c7006SSage Weil dout("__kick_osd_requests osd%d\n", osd->o_osd); 6786f6c7006SSage Weil err = __reset_osd(osdc, osd); 679685a7555SAlex Elder if (err) 6806f6c7006SSage Weil return; 681e02493c0SAlex Elder /* 682e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 683e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 684e02493c0SAlex Elder * sent in tid order, and that is also the order they're 685e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 686e02493c0SAlex Elder * flight will be found first, followed by all requests that 687e02493c0SAlex Elder * have not yet been sent. And to resend requests while 688e02493c0SAlex Elder * preserving this order we will want to put any sent 689e02493c0SAlex Elder * requests back on the front of the osd client's unsent 690e02493c0SAlex Elder * list. 691e02493c0SAlex Elder * 692e02493c0SAlex Elder * So we build a separate ordered list of already-sent 693e02493c0SAlex Elder * requests for the affected osd and splice it onto the 694e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 695e02493c0SAlex Elder * request that has not yet been sent we're done. Those 696e02493c0SAlex Elder * requests are already sitting right where they belong. 697e02493c0SAlex Elder */ 6986f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 699e02493c0SAlex Elder if (!req->r_sent) 700e02493c0SAlex Elder break; 701e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 702e02493c0SAlex Elder dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, 7036f6c7006SSage Weil osd->o_osd); 704a40c4f10SYehuda Sadeh if (!req->r_linger) 7056f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 7066f6c7006SSage Weil } 707e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 708a40c4f10SYehuda Sadeh 709e02493c0SAlex Elder /* 710e02493c0SAlex Elder * Linger requests are re-registered before sending, which 711e02493c0SAlex Elder * sets up a new tid for each. We add them to the unsent 712e02493c0SAlex Elder * list at the end to keep things in tid order. 713e02493c0SAlex Elder */ 714a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 715a40c4f10SYehuda Sadeh r_linger_osd) { 71677f38e0eSSage Weil /* 71777f38e0eSSage Weil * reregister request prior to unregistering linger so 71877f38e0eSSage Weil * that r_osd is preserved. 71977f38e0eSSage Weil */ 72077f38e0eSSage Weil BUG_ON(!list_empty(&req->r_req_lru_item)); 721a40c4f10SYehuda Sadeh __register_request(osdc, req); 722e02493c0SAlex Elder list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); 723ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 72477f38e0eSSage Weil __unregister_linger_request(osdc, req); 725a40c4f10SYehuda Sadeh dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, 726a40c4f10SYehuda Sadeh osd->o_osd); 727a40c4f10SYehuda Sadeh } 7286f6c7006SSage Weil } 7296f6c7006SSage Weil 7303d14c5d2SYehuda Sadeh /* 7313d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 7323d14c5d2SYehuda Sadeh */ 7333d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 7343d14c5d2SYehuda Sadeh { 7353d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 7363d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 7373d14c5d2SYehuda Sadeh 7383d14c5d2SYehuda Sadeh if (!osd) 7393d14c5d2SYehuda Sadeh return; 7403d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 7413d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 7423d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 74383aff95eSSage Weil mutex_lock(&osdc->request_mutex); 74483aff95eSSage Weil __kick_osd_requests(osdc, osd); 745f9d25199SAlex Elder __send_queued(osdc); 74683aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 7473d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 7483d14c5d2SYehuda Sadeh } 7493d14c5d2SYehuda Sadeh 7503d14c5d2SYehuda Sadeh /* 7513d14c5d2SYehuda Sadeh * Track open sessions with osds. 7523d14c5d2SYehuda Sadeh */ 753e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 7543d14c5d2SYehuda Sadeh { 7553d14c5d2SYehuda Sadeh struct ceph_osd *osd; 7563d14c5d2SYehuda Sadeh 7573d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 7583d14c5d2SYehuda Sadeh if (!osd) 7593d14c5d2SYehuda Sadeh return NULL; 7603d14c5d2SYehuda Sadeh 7613d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 7623d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 763e10006f8SAlex Elder osd->o_osd = onum; 764f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 7653d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 766a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 7673d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 7683d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 7693d14c5d2SYehuda Sadeh 770b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 7713d14c5d2SYehuda Sadeh 7723d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 7733d14c5d2SYehuda Sadeh return osd; 7743d14c5d2SYehuda Sadeh } 7753d14c5d2SYehuda Sadeh 7763d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 7773d14c5d2SYehuda Sadeh { 7783d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 7793d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 7803d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 7813d14c5d2SYehuda Sadeh return osd; 7823d14c5d2SYehuda Sadeh } else { 7833d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 7843d14c5d2SYehuda Sadeh return NULL; 7853d14c5d2SYehuda Sadeh } 7863d14c5d2SYehuda Sadeh } 7873d14c5d2SYehuda Sadeh 7883d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 7893d14c5d2SYehuda Sadeh { 7903d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 7913d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 792a255651dSAlex Elder if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { 7933d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 7943d14c5d2SYehuda Sadeh 79527859f97SSage Weil ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); 7963d14c5d2SYehuda Sadeh kfree(osd); 7973d14c5d2SYehuda Sadeh } 7983d14c5d2SYehuda Sadeh } 7993d14c5d2SYehuda Sadeh 8003d14c5d2SYehuda Sadeh /* 8013d14c5d2SYehuda Sadeh * remove an osd from our map 8023d14c5d2SYehuda Sadeh */ 8033d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 8043d14c5d2SYehuda Sadeh { 8053d14c5d2SYehuda Sadeh dout("__remove_osd %p\n", osd); 8063d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_requests)); 8073d14c5d2SYehuda Sadeh rb_erase(&osd->o_node, &osdc->osds); 8083d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 8093d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 8103d14c5d2SYehuda Sadeh put_osd(osd); 8113d14c5d2SYehuda Sadeh } 8123d14c5d2SYehuda Sadeh 813aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 814aca420bcSSage Weil { 815048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 816aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 817aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 818aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 819aca420bcSSage Weil struct ceph_osd, o_node); 820aca420bcSSage Weil __remove_osd(osdc, osd); 821aca420bcSSage Weil } 822aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 823aca420bcSSage Weil } 824aca420bcSSage Weil 8253d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 8263d14c5d2SYehuda Sadeh struct ceph_osd *osd) 8273d14c5d2SYehuda Sadeh { 8283d14c5d2SYehuda Sadeh dout("__move_osd_to_lru %p\n", osd); 8293d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 8303d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 8313d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 8323d14c5d2SYehuda Sadeh } 8333d14c5d2SYehuda Sadeh 8343d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 8353d14c5d2SYehuda Sadeh { 8363d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 8373d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 8383d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 8393d14c5d2SYehuda Sadeh } 8403d14c5d2SYehuda Sadeh 841aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 8423d14c5d2SYehuda Sadeh { 8433d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 8443d14c5d2SYehuda Sadeh 8453d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 8463d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 8473d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 848aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 8493d14c5d2SYehuda Sadeh break; 8503d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 8513d14c5d2SYehuda Sadeh } 8523d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 8533d14c5d2SYehuda Sadeh } 8543d14c5d2SYehuda Sadeh 8553d14c5d2SYehuda Sadeh /* 8563d14c5d2SYehuda Sadeh * reset osd connect 8573d14c5d2SYehuda Sadeh */ 8583d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 8593d14c5d2SYehuda Sadeh { 860c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 8613d14c5d2SYehuda Sadeh 8623d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 863a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 864a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 8653d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 866c3acb181SAlex Elder 867c3acb181SAlex Elder return -ENODEV; 868c3acb181SAlex Elder } 869c3acb181SAlex Elder 870c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 871c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 8723d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 873c3acb181SAlex Elder struct ceph_osd_request *req; 874c3acb181SAlex Elder 8753d14c5d2SYehuda Sadeh dout(" osd addr hasn't changed and connection never opened," 8763d14c5d2SYehuda Sadeh " letting msgr retry"); 8773d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 8783d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 8793d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 880c3acb181SAlex Elder 881c3acb181SAlex Elder return -EAGAIN; 8823d14c5d2SYehuda Sadeh } 883c3acb181SAlex Elder 884c3acb181SAlex Elder ceph_con_close(&osd->o_con); 885c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 886c3acb181SAlex Elder osd->o_incarnation++; 887c3acb181SAlex Elder 888c3acb181SAlex Elder return 0; 8893d14c5d2SYehuda Sadeh } 8903d14c5d2SYehuda Sadeh 8913d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 8923d14c5d2SYehuda Sadeh { 8933d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 8943d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 8953d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 8963d14c5d2SYehuda Sadeh 897aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 8983d14c5d2SYehuda Sadeh while (*p) { 8993d14c5d2SYehuda Sadeh parent = *p; 9003d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 9013d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 9023d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 9033d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 9043d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 9053d14c5d2SYehuda Sadeh else 9063d14c5d2SYehuda Sadeh BUG(); 9073d14c5d2SYehuda Sadeh } 9083d14c5d2SYehuda Sadeh 9093d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 9103d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 9113d14c5d2SYehuda Sadeh } 9123d14c5d2SYehuda Sadeh 9133d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 9143d14c5d2SYehuda Sadeh { 9153d14c5d2SYehuda Sadeh struct ceph_osd *osd; 9163d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 9173d14c5d2SYehuda Sadeh 9183d14c5d2SYehuda Sadeh while (n) { 9193d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 9203d14c5d2SYehuda Sadeh if (o < osd->o_osd) 9213d14c5d2SYehuda Sadeh n = n->rb_left; 9223d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 9233d14c5d2SYehuda Sadeh n = n->rb_right; 9243d14c5d2SYehuda Sadeh else 9253d14c5d2SYehuda Sadeh return osd; 9263d14c5d2SYehuda Sadeh } 9273d14c5d2SYehuda Sadeh return NULL; 9283d14c5d2SYehuda Sadeh } 9293d14c5d2SYehuda Sadeh 9303d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 9313d14c5d2SYehuda Sadeh { 9323d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 9333d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 9343d14c5d2SYehuda Sadeh } 9353d14c5d2SYehuda Sadeh 9363d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 9373d14c5d2SYehuda Sadeh { 9383d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 9393d14c5d2SYehuda Sadeh } 9403d14c5d2SYehuda Sadeh 9413d14c5d2SYehuda Sadeh /* 9423d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 9433d14c5d2SYehuda Sadeh * the timeout event. 9443d14c5d2SYehuda Sadeh */ 945a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 9463d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 9473d14c5d2SYehuda Sadeh { 9483d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 9493d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 95077f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 9513d14c5d2SYehuda Sadeh __insert_request(osdc, req); 9523d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 9533d14c5d2SYehuda Sadeh osdc->num_requests++; 9543d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 9553d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 9563d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 9573d14c5d2SYehuda Sadeh } 958a40c4f10SYehuda Sadeh } 959a40c4f10SYehuda Sadeh 9603d14c5d2SYehuda Sadeh /* 9613d14c5d2SYehuda Sadeh * called under osdc->request_mutex 9623d14c5d2SYehuda Sadeh */ 9633d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 9643d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 9653d14c5d2SYehuda Sadeh { 96635f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 96735f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 96835f9f8a0SSage Weil req, req->r_tid); 96935f9f8a0SSage Weil return; 97035f9f8a0SSage Weil } 97135f9f8a0SSage Weil 9723d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 9733d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 9743d14c5d2SYehuda Sadeh osdc->num_requests--; 9753d14c5d2SYehuda Sadeh 9763d14c5d2SYehuda Sadeh if (req->r_osd) { 9773d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 9786740a845SAlex Elder ceph_msg_revoke(req->r_request); 9793d14c5d2SYehuda Sadeh 9803d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 981a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 982a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 983a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 9843d14c5d2SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 985a40c4f10SYehuda Sadeh } 986fbdb9190SSage Weil if (list_empty(&req->r_linger_item)) 9873d14c5d2SYehuda Sadeh req->r_osd = NULL; 9883d14c5d2SYehuda Sadeh } 9893d14c5d2SYehuda Sadeh 9907d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 9913d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 9923d14c5d2SYehuda Sadeh 9933d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 9943d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 9953d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 9963d14c5d2SYehuda Sadeh } 9973d14c5d2SYehuda Sadeh } 9983d14c5d2SYehuda Sadeh 9993d14c5d2SYehuda Sadeh /* 10003d14c5d2SYehuda Sadeh * Cancel a previously queued request message 10013d14c5d2SYehuda Sadeh */ 10023d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 10033d14c5d2SYehuda Sadeh { 10043d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 10056740a845SAlex Elder ceph_msg_revoke(req->r_request); 10063d14c5d2SYehuda Sadeh req->r_sent = 0; 10073d14c5d2SYehuda Sadeh } 10083d14c5d2SYehuda Sadeh } 10093d14c5d2SYehuda Sadeh 1010a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1011a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1012a40c4f10SYehuda Sadeh { 1013a40c4f10SYehuda Sadeh dout("__register_linger_request %p\n", req); 1014a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 10156194ea89SSage Weil if (req->r_osd) 10166194ea89SSage Weil list_add_tail(&req->r_linger_osd, 10176194ea89SSage Weil &req->r_osd->o_linger_requests); 1018a40c4f10SYehuda Sadeh } 1019a40c4f10SYehuda Sadeh 1020a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1021a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1022a40c4f10SYehuda Sadeh { 1023a40c4f10SYehuda Sadeh dout("__unregister_linger_request %p\n", req); 1024a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 102561c74035SAlex Elder if (req->r_osd) { 1026a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_osd); 1027a40c4f10SYehuda Sadeh 1028a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 1029a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 1030a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 1031a40c4f10SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 1032a40c4f10SYehuda Sadeh } 1033fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1034a40c4f10SYehuda Sadeh req->r_osd = NULL; 1035a40c4f10SYehuda Sadeh } 1036a40c4f10SYehuda Sadeh } 1037a40c4f10SYehuda Sadeh 1038a40c4f10SYehuda Sadeh void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, 1039a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1040a40c4f10SYehuda Sadeh { 1041a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1042a40c4f10SYehuda Sadeh if (req->r_linger) { 1043a40c4f10SYehuda Sadeh __unregister_linger_request(osdc, req); 1044a40c4f10SYehuda Sadeh ceph_osdc_put_request(req); 1045a40c4f10SYehuda Sadeh } 1046a40c4f10SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1047a40c4f10SYehuda Sadeh } 1048a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); 1049a40c4f10SYehuda Sadeh 1050a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1051a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1052a40c4f10SYehuda Sadeh { 1053a40c4f10SYehuda Sadeh if (!req->r_linger) { 1054a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1055a40c4f10SYehuda Sadeh req->r_linger = 1; 1056a40c4f10SYehuda Sadeh /* 1057a40c4f10SYehuda Sadeh * caller is now responsible for calling 1058a40c4f10SYehuda Sadeh * unregister_linger_request 1059a40c4f10SYehuda Sadeh */ 1060a40c4f10SYehuda Sadeh ceph_osdc_get_request(req); 1061a40c4f10SYehuda Sadeh } 1062a40c4f10SYehuda Sadeh } 1063a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1064a40c4f10SYehuda Sadeh 10653d14c5d2SYehuda Sadeh /* 10663d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 10673d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 106825985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 10696f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 10703d14c5d2SYehuda Sadeh * 10713d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 10723d14c5d2SYehuda Sadeh * 10733d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 10743d14c5d2SYehuda Sadeh */ 10756f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 107638d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 10773d14c5d2SYehuda Sadeh { 10785b191d99SSage Weil struct ceph_pg pgid; 10793d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 10803d14c5d2SYehuda Sadeh int o = -1, num = 0; 10813d14c5d2SYehuda Sadeh int err; 10823d14c5d2SYehuda Sadeh 10836f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 108441766f87SAlex Elder err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, 108541766f87SAlex Elder ceph_file_layout_pg_pool(req->r_file_layout)); 10866f6c7006SSage Weil if (err) { 10876f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 10883d14c5d2SYehuda Sadeh return err; 10896f6c7006SSage Weil } 10903d14c5d2SYehuda Sadeh req->r_pgid = pgid; 10913d14c5d2SYehuda Sadeh 10923d14c5d2SYehuda Sadeh err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); 10933d14c5d2SYehuda Sadeh if (err > 0) { 10943d14c5d2SYehuda Sadeh o = acting[0]; 10953d14c5d2SYehuda Sadeh num = err; 10963d14c5d2SYehuda Sadeh } 10973d14c5d2SYehuda Sadeh 109838d6453cSSage Weil if ((!force_resend && 109938d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 11003d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 11013d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 11023d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 11033d14c5d2SYehuda Sadeh (req->r_osd == NULL && o == -1)) 11043d14c5d2SYehuda Sadeh return 0; /* no change */ 11053d14c5d2SYehuda Sadeh 11065b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 11075b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 11083d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 11093d14c5d2SYehuda Sadeh 11103d14c5d2SYehuda Sadeh /* record full pg acting set */ 11113d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 11123d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 11133d14c5d2SYehuda Sadeh 11143d14c5d2SYehuda Sadeh if (req->r_osd) { 11153d14c5d2SYehuda Sadeh __cancel_request(req); 11163d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 11173d14c5d2SYehuda Sadeh req->r_osd = NULL; 11183d14c5d2SYehuda Sadeh } 11193d14c5d2SYehuda Sadeh 11203d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 11213d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 11223d14c5d2SYehuda Sadeh err = -ENOMEM; 1123e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 11246f6c7006SSage Weil if (!req->r_osd) { 11256f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 11263d14c5d2SYehuda Sadeh goto out; 11276f6c7006SSage Weil } 11283d14c5d2SYehuda Sadeh 11296f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 11303d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 11313d14c5d2SYehuda Sadeh 1132b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1133b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1134b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 11353d14c5d2SYehuda Sadeh } 11363d14c5d2SYehuda Sadeh 11373d14c5d2SYehuda Sadeh if (req->r_osd) { 11383d14c5d2SYehuda Sadeh __remove_osd_from_lru(req->r_osd); 1139ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1140ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 11416f6c7006SSage Weil } else { 1142ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 11433d14c5d2SYehuda Sadeh } 11443d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 11453d14c5d2SYehuda Sadeh 11463d14c5d2SYehuda Sadeh out: 11473d14c5d2SYehuda Sadeh return err; 11483d14c5d2SYehuda Sadeh } 11493d14c5d2SYehuda Sadeh 11503d14c5d2SYehuda Sadeh /* 11513d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 11523d14c5d2SYehuda Sadeh */ 115356e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 11543d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 11553d14c5d2SYehuda Sadeh { 11561b83bef2SSage Weil void *p; 11573d14c5d2SYehuda Sadeh 11581b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 11591b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 11601b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 11613d14c5d2SYehuda Sadeh 11621b83bef2SSage Weil /* fill in message content that changes each time we send it */ 11631b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 11641b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 11651b83bef2SSage Weil put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); 11661b83bef2SSage Weil p = req->r_request_pgid; 11671b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 11681b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 11691b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 11701b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 11711b83bef2SSage Weil sizeof(req->r_reassert_version)); 11722169aea6SSage Weil 11733d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 11743d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 11753d14c5d2SYehuda Sadeh 11763d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 11773d14c5d2SYehuda Sadeh ceph_con_send(&req->r_osd->o_con, req->r_request); 11783d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 11793d14c5d2SYehuda Sadeh } 11803d14c5d2SYehuda Sadeh 11813d14c5d2SYehuda Sadeh /* 11826f6c7006SSage Weil * Send any requests in the queue (req_unsent). 11836f6c7006SSage Weil */ 1184f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 11856f6c7006SSage Weil { 11866f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 11876f6c7006SSage Weil 1188f9d25199SAlex Elder dout("__send_queued\n"); 1189f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 11906f6c7006SSage Weil __send_request(osdc, req); 11916f6c7006SSage Weil } 11926f6c7006SSage Weil 11936f6c7006SSage Weil /* 11943d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 11953d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 11963d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 11973d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 11983d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 11993d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 12003d14c5d2SYehuda Sadeh * there are no open requests). 12013d14c5d2SYehuda Sadeh */ 12023d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 12033d14c5d2SYehuda Sadeh { 12043d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 12053d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 120683aff95eSSage Weil struct ceph_osd_request *req; 12073d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12083d14c5d2SYehuda Sadeh unsigned long keepalive = 12093d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 12103d14c5d2SYehuda Sadeh struct list_head slow_osds; 12113d14c5d2SYehuda Sadeh dout("timeout\n"); 12123d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 12133d14c5d2SYehuda Sadeh 12143d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 12153d14c5d2SYehuda Sadeh 12163d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 12173d14c5d2SYehuda Sadeh 12183d14c5d2SYehuda Sadeh /* 12193d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 12203d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 12213d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 12223d14c5d2SYehuda Sadeh */ 12233d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 12243d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 12253d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 12263d14c5d2SYehuda Sadeh break; 12273d14c5d2SYehuda Sadeh 12283d14c5d2SYehuda Sadeh osd = req->r_osd; 12293d14c5d2SYehuda Sadeh BUG_ON(!osd); 12303d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 12313d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 12323d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 12333d14c5d2SYehuda Sadeh } 12343d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 12353d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 12363d14c5d2SYehuda Sadeh o_keepalive_item); 12373d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 12383d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 12393d14c5d2SYehuda Sadeh } 12403d14c5d2SYehuda Sadeh 12413d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1242f9d25199SAlex Elder __send_queued(osdc); 12433d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 12443d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 12453d14c5d2SYehuda Sadeh } 12463d14c5d2SYehuda Sadeh 12473d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 12483d14c5d2SYehuda Sadeh { 12493d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 12503d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 12513d14c5d2SYehuda Sadeh osds_timeout_work.work); 12523d14c5d2SYehuda Sadeh unsigned long delay = 12533d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 12543d14c5d2SYehuda Sadeh 12553d14c5d2SYehuda Sadeh dout("osds timeout\n"); 12563d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1257aca420bcSSage Weil remove_old_osds(osdc); 12583d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 12593d14c5d2SYehuda Sadeh 12603d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 12613d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 12623d14c5d2SYehuda Sadeh } 12633d14c5d2SYehuda Sadeh 126425845472SSage Weil static void complete_request(struct ceph_osd_request *req) 126525845472SSage Weil { 126625845472SSage Weil if (req->r_safe_callback) 126725845472SSage Weil req->r_safe_callback(req, NULL); 126825845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 126925845472SSage Weil } 127025845472SSage Weil 12711b83bef2SSage Weil static int __decode_pgid(void **p, void *end, struct ceph_pg *pgid) 12721b83bef2SSage Weil { 12731b83bef2SSage Weil __u8 v; 12741b83bef2SSage Weil 12751b83bef2SSage Weil ceph_decode_need(p, end, 1 + 8 + 4 + 4, bad); 12761b83bef2SSage Weil v = ceph_decode_8(p); 12771b83bef2SSage Weil if (v > 1) { 12781b83bef2SSage Weil pr_warning("do not understand pg encoding %d > 1", v); 12791b83bef2SSage Weil return -EINVAL; 12801b83bef2SSage Weil } 12811b83bef2SSage Weil pgid->pool = ceph_decode_64(p); 12821b83bef2SSage Weil pgid->seed = ceph_decode_32(p); 12831b83bef2SSage Weil *p += 4; 12841b83bef2SSage Weil return 0; 12851b83bef2SSage Weil 12861b83bef2SSage Weil bad: 12871b83bef2SSage Weil pr_warning("incomplete pg encoding"); 12881b83bef2SSage Weil return -EINVAL; 12891b83bef2SSage Weil } 12901b83bef2SSage Weil 12913d14c5d2SYehuda Sadeh /* 12923d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 12933d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 12943d14c5d2SYehuda Sadeh */ 12953d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 12963d14c5d2SYehuda Sadeh struct ceph_connection *con) 12973d14c5d2SYehuda Sadeh { 12981b83bef2SSage Weil void *p, *end; 12993d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 13003d14c5d2SYehuda Sadeh u64 tid; 13011b83bef2SSage Weil int object_len; 13021b83bef2SSage Weil int numops, payload_len, flags; 13033d14c5d2SYehuda Sadeh s32 result; 13041b83bef2SSage Weil s32 retry_attempt; 13051b83bef2SSage Weil struct ceph_pg pg; 13061b83bef2SSage Weil int err; 13071b83bef2SSage Weil u32 reassert_epoch; 13081b83bef2SSage Weil u64 reassert_version; 13091b83bef2SSage Weil u32 osdmap_epoch; 13100d5af164SAlex Elder int already_completed; 13111b83bef2SSage Weil int i; 13123d14c5d2SYehuda Sadeh 13133d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 13141b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 13151b83bef2SSage Weil 13161b83bef2SSage Weil p = msg->front.iov_base; 13171b83bef2SSage Weil end = p + msg->front.iov_len; 13181b83bef2SSage Weil 13191b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 13201b83bef2SSage Weil object_len = ceph_decode_32(&p); 13211b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 13221b83bef2SSage Weil p += object_len; 13231b83bef2SSage Weil 13241b83bef2SSage Weil err = __decode_pgid(&p, end, &pg); 13251b83bef2SSage Weil if (err) 13263d14c5d2SYehuda Sadeh goto bad; 13271b83bef2SSage Weil 13281b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 13291b83bef2SSage Weil flags = ceph_decode_64(&p); 13301b83bef2SSage Weil result = ceph_decode_32(&p); 13311b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 13321b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 13331b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 13341b83bef2SSage Weil 13353d14c5d2SYehuda Sadeh /* lookup */ 13363d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 13373d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 13383d14c5d2SYehuda Sadeh if (req == NULL) { 13393d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 13403d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 13413d14c5d2SYehuda Sadeh return; 13423d14c5d2SYehuda Sadeh } 13433d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 13441b83bef2SSage Weil 13451b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 13461b83bef2SSage Weil req, result); 13471b83bef2SSage Weil 13481b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 13491b83bef2SSage Weil numops = ceph_decode_32(&p); 13501b83bef2SSage Weil if (numops > CEPH_OSD_MAX_OP) 13511b83bef2SSage Weil goto bad_put; 13521b83bef2SSage Weil if (numops != req->r_num_ops) 13531b83bef2SSage Weil goto bad_put; 13541b83bef2SSage Weil payload_len = 0; 13551b83bef2SSage Weil ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); 13561b83bef2SSage Weil for (i = 0; i < numops; i++) { 13571b83bef2SSage Weil struct ceph_osd_op *op = p; 13581b83bef2SSage Weil int len; 13591b83bef2SSage Weil 13601b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 13611b83bef2SSage Weil req->r_reply_op_len[i] = len; 13621b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 13631b83bef2SSage Weil payload_len += len; 13641b83bef2SSage Weil p += sizeof(*op); 13651b83bef2SSage Weil } 13661b83bef2SSage Weil if (payload_len != le32_to_cpu(msg->hdr.data_len)) { 13671b83bef2SSage Weil pr_warning("sum of op payload lens %d != data_len %d", 13681b83bef2SSage Weil payload_len, le32_to_cpu(msg->hdr.data_len)); 13691b83bef2SSage Weil goto bad_put; 13701b83bef2SSage Weil } 13711b83bef2SSage Weil 13721b83bef2SSage Weil ceph_decode_need(&p, end, 4 + numops * 4, bad); 13731b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 13741b83bef2SSage Weil for (i = 0; i < numops; i++) 13751b83bef2SSage Weil req->r_reply_op_result[i] = ceph_decode_32(&p); 13763d14c5d2SYehuda Sadeh 13773d14c5d2SYehuda Sadeh /* 13783d14c5d2SYehuda Sadeh * if this connection filled our message, drop our reference now, to 13793d14c5d2SYehuda Sadeh * avoid a (safe but slower) revoke later. 13803d14c5d2SYehuda Sadeh */ 13813d14c5d2SYehuda Sadeh if (req->r_con_filling_msg == con && req->r_reply == msg) { 13823d14c5d2SYehuda Sadeh dout(" dropping con_filling_msg ref %p\n", con); 13833d14c5d2SYehuda Sadeh req->r_con_filling_msg = NULL; 13840d47766fSSage Weil con->ops->put(con); 13853d14c5d2SYehuda Sadeh } 13863d14c5d2SYehuda Sadeh 13873d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 138895c96174SEric Dumazet unsigned int bytes; 13893d14c5d2SYehuda Sadeh 13901b83bef2SSage Weil req->r_result = result; 13913d14c5d2SYehuda Sadeh bytes = le32_to_cpu(msg->hdr.data_len); 13923d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 13933d14c5d2SYehuda Sadeh bytes); 13943d14c5d2SYehuda Sadeh if (req->r_result == 0) 13953d14c5d2SYehuda Sadeh req->r_result = bytes; 13963d14c5d2SYehuda Sadeh 13973d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 13981b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 13991b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 14003d14c5d2SYehuda Sadeh 14013d14c5d2SYehuda Sadeh req->r_got_reply = 1; 14023d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 14033d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 14043d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14053d14c5d2SYehuda Sadeh goto done; 14063d14c5d2SYehuda Sadeh } 14073d14c5d2SYehuda Sadeh 14083d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 14093d14c5d2SYehuda Sadeh 1410a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1411a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1412a40c4f10SYehuda Sadeh 14133d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 14143d14c5d2SYehuda Sadeh if (result < 0 || 14153d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 14163d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 14173d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 14183d14c5d2SYehuda Sadeh 14190d5af164SAlex Elder already_completed = req->r_completed; 14200d5af164SAlex Elder req->r_completed = 1; 14213d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14220d5af164SAlex Elder if (already_completed) 14230d5af164SAlex Elder goto done; 14243d14c5d2SYehuda Sadeh 14253d14c5d2SYehuda Sadeh if (req->r_callback) 14263d14c5d2SYehuda Sadeh req->r_callback(req, msg); 14273d14c5d2SYehuda Sadeh else 14283d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 14293d14c5d2SYehuda Sadeh 143025845472SSage Weil if (flags & CEPH_OSD_FLAG_ONDISK) 143125845472SSage Weil complete_request(req); 14323d14c5d2SYehuda Sadeh 14333d14c5d2SYehuda Sadeh done: 1434a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 14353d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 14363d14c5d2SYehuda Sadeh return; 14373d14c5d2SYehuda Sadeh 14381b83bef2SSage Weil bad_put: 14391b83bef2SSage Weil ceph_osdc_put_request(req); 14403d14c5d2SYehuda Sadeh bad: 14411b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 14421b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 14433d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 14443d14c5d2SYehuda Sadeh } 14453d14c5d2SYehuda Sadeh 14466f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 14473d14c5d2SYehuda Sadeh { 14483d14c5d2SYehuda Sadeh struct rb_node *p, *n; 14493d14c5d2SYehuda Sadeh 14503d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 14516f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 14523d14c5d2SYehuda Sadeh 14533d14c5d2SYehuda Sadeh n = rb_next(p); 14543d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 14553d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 14563d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 14573d14c5d2SYehuda Sadeh osd->o_osd), 14583d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 14593d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 14603d14c5d2SYehuda Sadeh } 14613d14c5d2SYehuda Sadeh } 14623d14c5d2SYehuda Sadeh 14633d14c5d2SYehuda Sadeh /* 14646f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 14656f6c7006SSage Weil * no osd, request a new map. 14663d14c5d2SYehuda Sadeh * 1467e6d50f67SAlex Elder * Caller should hold map_sem for read. 14683d14c5d2SYehuda Sadeh */ 146938d6453cSSage Weil static void kick_requests(struct ceph_osd_client *osdc, int force_resend) 14703d14c5d2SYehuda Sadeh { 1471a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 14726f6c7006SSage Weil struct rb_node *p; 14736f6c7006SSage Weil int needmap = 0; 14746f6c7006SSage Weil int err; 14753d14c5d2SYehuda Sadeh 147638d6453cSSage Weil dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); 14773d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 14786194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 14796f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 14806194ea89SSage Weil p = rb_next(p); 1481ab60b16dSAlex Elder 1482ab60b16dSAlex Elder /* 1483ab60b16dSAlex Elder * For linger requests that have not yet been 1484ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1485ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1486ab60b16dSAlex Elder * the request before re-registering it as a linger 1487ab60b16dSAlex Elder * request to ensure the __map_request() below 1488ab60b16dSAlex Elder * will decide it needs to be sent. 1489ab60b16dSAlex Elder */ 1490ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1491ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1492ab60b16dSAlex Elder req, req->r_tid, 1493ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 1494ab60b16dSAlex Elder __unregister_request(osdc, req); 1495ab60b16dSAlex Elder __register_linger_request(osdc, req); 1496ab60b16dSAlex Elder continue; 1497ab60b16dSAlex Elder } 1498ab60b16dSAlex Elder 149938d6453cSSage Weil err = __map_request(osdc, req, force_resend); 15006f6c7006SSage Weil if (err < 0) 15016f6c7006SSage Weil continue; /* error */ 15026f6c7006SSage Weil if (req->r_osd == NULL) { 15036f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 15046f6c7006SSage Weil needmap++; /* request a newer map */ 15056f6c7006SSage Weil } else if (err > 0) { 15066194ea89SSage Weil if (!req->r_linger) { 15076194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 15086194ea89SSage Weil req->r_tid, 15096f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 15106f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 15116f6c7006SSage Weil } 15126f6c7006SSage Weil } 15136194ea89SSage Weil } 1514a40c4f10SYehuda Sadeh 1515a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 1516a40c4f10SYehuda Sadeh r_linger_item) { 1517a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 1518a40c4f10SYehuda Sadeh 151938d6453cSSage Weil err = __map_request(osdc, req, force_resend); 1520ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 1521a40c4f10SYehuda Sadeh if (err == 0) 1522a40c4f10SYehuda Sadeh continue; /* no change and no osd was specified */ 1523a40c4f10SYehuda Sadeh if (err < 0) 1524a40c4f10SYehuda Sadeh continue; /* hrm! */ 1525a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 1526a40c4f10SYehuda Sadeh dout("tid %llu maps to no valid osd\n", req->r_tid); 1527a40c4f10SYehuda Sadeh needmap++; /* request a newer map */ 1528a40c4f10SYehuda Sadeh continue; 1529a40c4f10SYehuda Sadeh } 1530a40c4f10SYehuda Sadeh 1531a40c4f10SYehuda Sadeh dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, 1532a40c4f10SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 1533a40c4f10SYehuda Sadeh __register_request(osdc, req); 1534c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 1535a40c4f10SYehuda Sadeh } 15363d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 15373d14c5d2SYehuda Sadeh 15383d14c5d2SYehuda Sadeh if (needmap) { 15393d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 15403d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 15413d14c5d2SYehuda Sadeh } 1542e6d50f67SAlex Elder reset_changed_osds(osdc); 15433d14c5d2SYehuda Sadeh } 15446f6c7006SSage Weil 15456f6c7006SSage Weil 15463d14c5d2SYehuda Sadeh /* 15473d14c5d2SYehuda Sadeh * Process updated osd map. 15483d14c5d2SYehuda Sadeh * 15493d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 15503d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 15513d14c5d2SYehuda Sadeh * off to different OSDs as needed. 15523d14c5d2SYehuda Sadeh */ 15533d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 15543d14c5d2SYehuda Sadeh { 15553d14c5d2SYehuda Sadeh void *p, *end, *next; 15563d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 15573d14c5d2SYehuda Sadeh u32 epoch; 15583d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 15593d14c5d2SYehuda Sadeh int err; 15603d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 15613d14c5d2SYehuda Sadeh 15623d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 15633d14c5d2SYehuda Sadeh p = msg->front.iov_base; 15643d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 15653d14c5d2SYehuda Sadeh 15663d14c5d2SYehuda Sadeh /* verify fsid */ 15673d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 15683d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 15693d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 15703d14c5d2SYehuda Sadeh return; 15713d14c5d2SYehuda Sadeh 15723d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 15733d14c5d2SYehuda Sadeh 15743d14c5d2SYehuda Sadeh /* incremental maps */ 15753d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 15763d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 15773d14c5d2SYehuda Sadeh while (nr_maps > 0) { 15783d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 15793d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 15803d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 15813d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 15823d14c5d2SYehuda Sadeh next = p + maplen; 15833d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 15843d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 15853d14c5d2SYehuda Sadeh epoch, maplen); 15863d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 15873d14c5d2SYehuda Sadeh osdc->osdmap, 158815d9882cSAlex Elder &osdc->client->msgr); 15893d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 15903d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 15913d14c5d2SYehuda Sadeh goto bad; 15923d14c5d2SYehuda Sadeh } 15933d14c5d2SYehuda Sadeh BUG_ON(!newmap); 15943d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 15953d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 15963d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 15973d14c5d2SYehuda Sadeh } 159838d6453cSSage Weil kick_requests(osdc, 0); 15993d14c5d2SYehuda Sadeh } else { 16003d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 16013d14c5d2SYehuda Sadeh epoch, maplen); 16023d14c5d2SYehuda Sadeh } 16033d14c5d2SYehuda Sadeh p = next; 16043d14c5d2SYehuda Sadeh nr_maps--; 16053d14c5d2SYehuda Sadeh } 16063d14c5d2SYehuda Sadeh if (newmap) 16073d14c5d2SYehuda Sadeh goto done; 16083d14c5d2SYehuda Sadeh 16093d14c5d2SYehuda Sadeh /* full maps */ 16103d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 16113d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 16123d14c5d2SYehuda Sadeh while (nr_maps) { 16133d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 16143d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 16153d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 16163d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 16173d14c5d2SYehuda Sadeh if (nr_maps > 1) { 16183d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 16193d14c5d2SYehuda Sadeh epoch, maplen); 16203d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 16213d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 16223d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 16233d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 16243d14c5d2SYehuda Sadeh } else { 162538d6453cSSage Weil int skipped_map = 0; 162638d6453cSSage Weil 16273d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 16283d14c5d2SYehuda Sadeh newmap = osdmap_decode(&p, p+maplen); 16293d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 16303d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 16313d14c5d2SYehuda Sadeh goto bad; 16323d14c5d2SYehuda Sadeh } 16333d14c5d2SYehuda Sadeh BUG_ON(!newmap); 16343d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 16353d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 163638d6453cSSage Weil if (oldmap) { 163738d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 163838d6453cSSage Weil skipped_map = 1; 16393d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 164038d6453cSSage Weil } 164138d6453cSSage Weil kick_requests(osdc, skipped_map); 16423d14c5d2SYehuda Sadeh } 16433d14c5d2SYehuda Sadeh p += maplen; 16443d14c5d2SYehuda Sadeh nr_maps--; 16453d14c5d2SYehuda Sadeh } 16463d14c5d2SYehuda Sadeh 16473d14c5d2SYehuda Sadeh done: 16483d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 16493d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 1650cd634fb6SSage Weil 1651cd634fb6SSage Weil /* 1652cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 1653cd634fb6SSage Weil * we find out when we are no longer full and stop returning 1654cd634fb6SSage Weil * ENOSPC. 1655cd634fb6SSage Weil */ 1656cd634fb6SSage Weil if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) 1657cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 1658cd634fb6SSage Weil 1659f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 1660f9d25199SAlex Elder __send_queued(osdc); 1661f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 16623d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16633d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 16643d14c5d2SYehuda Sadeh return; 16653d14c5d2SYehuda Sadeh 16663d14c5d2SYehuda Sadeh bad: 16673d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 16683d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 16693d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 16703d14c5d2SYehuda Sadeh return; 16713d14c5d2SYehuda Sadeh } 16723d14c5d2SYehuda Sadeh 16733d14c5d2SYehuda Sadeh /* 1674a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 1675a40c4f10SYehuda Sadeh * 1676a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 1677a40c4f10SYehuda Sadeh */ 1678a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 1679a40c4f10SYehuda Sadeh { 1680a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 1681a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 1682a40c4f10SYehuda Sadeh 1683a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 1684a40c4f10SYehuda Sadeh kfree(event); 1685a40c4f10SYehuda Sadeh } 1686a40c4f10SYehuda Sadeh 1687a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 1688a40c4f10SYehuda Sadeh { 1689a40c4f10SYehuda Sadeh kref_get(&event->kref); 1690a40c4f10SYehuda Sadeh } 1691a40c4f10SYehuda Sadeh 1692a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 1693a40c4f10SYehuda Sadeh { 1694a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 1695a40c4f10SYehuda Sadeh } 1696a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 1697a40c4f10SYehuda Sadeh 1698a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 1699a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 1700a40c4f10SYehuda Sadeh { 1701a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1702a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1703a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1704a40c4f10SYehuda Sadeh 1705a40c4f10SYehuda Sadeh while (*p) { 1706a40c4f10SYehuda Sadeh parent = *p; 1707a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1708a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 1709a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1710a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 1711a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1712a40c4f10SYehuda Sadeh else 1713a40c4f10SYehuda Sadeh BUG(); 1714a40c4f10SYehuda Sadeh } 1715a40c4f10SYehuda Sadeh 1716a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 1717a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 1718a40c4f10SYehuda Sadeh } 1719a40c4f10SYehuda Sadeh 1720a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 1721a40c4f10SYehuda Sadeh u64 cookie) 1722a40c4f10SYehuda Sadeh { 1723a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1724a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1725a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1726a40c4f10SYehuda Sadeh 1727a40c4f10SYehuda Sadeh while (*p) { 1728a40c4f10SYehuda Sadeh parent = *p; 1729a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1730a40c4f10SYehuda Sadeh if (cookie < event->cookie) 1731a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1732a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 1733a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1734a40c4f10SYehuda Sadeh else 1735a40c4f10SYehuda Sadeh return event; 1736a40c4f10SYehuda Sadeh } 1737a40c4f10SYehuda Sadeh return NULL; 1738a40c4f10SYehuda Sadeh } 1739a40c4f10SYehuda Sadeh 1740a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 1741a40c4f10SYehuda Sadeh { 1742a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1743a40c4f10SYehuda Sadeh 1744a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 1745a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 1746a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 1747a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1748a40c4f10SYehuda Sadeh } else { 1749a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 1750a40c4f10SYehuda Sadeh } 1751a40c4f10SYehuda Sadeh } 1752a40c4f10SYehuda Sadeh 1753a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 1754a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 17553c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 1756a40c4f10SYehuda Sadeh { 1757a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1758a40c4f10SYehuda Sadeh 1759a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 1760a40c4f10SYehuda Sadeh if (!event) 1761a40c4f10SYehuda Sadeh return -ENOMEM; 1762a40c4f10SYehuda Sadeh 1763a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 1764a40c4f10SYehuda Sadeh event->cb = event_cb; 17653c663bbdSAlex Elder event->one_shot = 0; 1766a40c4f10SYehuda Sadeh event->data = data; 1767a40c4f10SYehuda Sadeh event->osdc = osdc; 1768a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 17693ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 1770a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 1771a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 1772a40c4f10SYehuda Sadeh 1773a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1774a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 1775a40c4f10SYehuda Sadeh __insert_event(osdc, event); 1776a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1777a40c4f10SYehuda Sadeh 1778a40c4f10SYehuda Sadeh *pevent = event; 1779a40c4f10SYehuda Sadeh return 0; 1780a40c4f10SYehuda Sadeh } 1781a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 1782a40c4f10SYehuda Sadeh 1783a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 1784a40c4f10SYehuda Sadeh { 1785a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1786a40c4f10SYehuda Sadeh 1787a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 1788a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1789a40c4f10SYehuda Sadeh __remove_event(event); 1790a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1791a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 1792a40c4f10SYehuda Sadeh } 1793a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 1794a40c4f10SYehuda Sadeh 1795a40c4f10SYehuda Sadeh 1796a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 1797a40c4f10SYehuda Sadeh { 1798a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 1799a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 1800a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 1801a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 1802a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 1803a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 1804a40c4f10SYehuda Sadeh 1805a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 1806a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 1807a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 1808a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1809a40c4f10SYehuda Sadeh kfree(event_work); 1810a40c4f10SYehuda Sadeh } 1811a40c4f10SYehuda Sadeh 1812a40c4f10SYehuda Sadeh 1813a40c4f10SYehuda Sadeh /* 1814a40c4f10SYehuda Sadeh * Process osd watch notifications 1815a40c4f10SYehuda Sadeh */ 18163c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 18173c663bbdSAlex Elder struct ceph_msg *msg) 1818a40c4f10SYehuda Sadeh { 1819a40c4f10SYehuda Sadeh void *p, *end; 1820a40c4f10SYehuda Sadeh u8 proto_ver; 1821a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 1822a40c4f10SYehuda Sadeh u8 opcode; 1823a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1824a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 1825a40c4f10SYehuda Sadeh 1826a40c4f10SYehuda Sadeh p = msg->front.iov_base; 1827a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 1828a40c4f10SYehuda Sadeh 1829a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 1830a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 1831a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 1832a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 1833a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 1834a40c4f10SYehuda Sadeh 1835a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1836a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 1837a40c4f10SYehuda Sadeh if (event) { 18383c663bbdSAlex Elder BUG_ON(event->one_shot); 1839a40c4f10SYehuda Sadeh get_event(event); 1840a40c4f10SYehuda Sadeh } 1841a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1842a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 1843a40c4f10SYehuda Sadeh cookie, ver, event); 1844a40c4f10SYehuda Sadeh if (event) { 1845a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 1846a40c4f10SYehuda Sadeh if (!event_work) { 1847a40c4f10SYehuda Sadeh dout("ERROR: could not allocate event_work\n"); 1848a40c4f10SYehuda Sadeh goto done_err; 1849a40c4f10SYehuda Sadeh } 18506b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 1851a40c4f10SYehuda Sadeh event_work->event = event; 1852a40c4f10SYehuda Sadeh event_work->ver = ver; 1853a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 1854a40c4f10SYehuda Sadeh event_work->opcode = opcode; 1855a40c4f10SYehuda Sadeh if (!queue_work(osdc->notify_wq, &event_work->work)) { 1856a40c4f10SYehuda Sadeh dout("WARNING: failed to queue notify event work\n"); 1857a40c4f10SYehuda Sadeh goto done_err; 1858a40c4f10SYehuda Sadeh } 1859a40c4f10SYehuda Sadeh } 1860a40c4f10SYehuda Sadeh 1861a40c4f10SYehuda Sadeh return; 1862a40c4f10SYehuda Sadeh 1863a40c4f10SYehuda Sadeh done_err: 1864a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1865a40c4f10SYehuda Sadeh return; 1866a40c4f10SYehuda Sadeh 1867a40c4f10SYehuda Sadeh bad: 1868a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 1869a40c4f10SYehuda Sadeh return; 1870a40c4f10SYehuda Sadeh } 1871a40c4f10SYehuda Sadeh 187270636773SAlex Elder static void ceph_osdc_msg_data_set(struct ceph_msg *msg, 187370636773SAlex Elder struct ceph_osd_data *osd_data) 187470636773SAlex Elder { 187570636773SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 187670636773SAlex Elder BUG_ON(osd_data->length > (u64) SIZE_MAX); 187770636773SAlex Elder if (osd_data->length) 187870636773SAlex Elder ceph_msg_data_set_pages(msg, osd_data->pages, 187970636773SAlex Elder osd_data->length, osd_data->alignment); 18809a5e6d09SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 18819a5e6d09SAlex Elder BUG_ON(!osd_data->pagelist->length); 18829a5e6d09SAlex Elder ceph_msg_data_set_pagelist(msg, osd_data->pagelist); 188370636773SAlex Elder #ifdef CONFIG_BLOCK 188470636773SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 188570636773SAlex Elder ceph_msg_data_set_bio(msg, osd_data->bio); 188670636773SAlex Elder #endif 188770636773SAlex Elder } else { 188870636773SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 188970636773SAlex Elder } 189070636773SAlex Elder } 189170636773SAlex Elder 1892a40c4f10SYehuda Sadeh /* 18933d14c5d2SYehuda Sadeh * Register request, send initial attempt. 18943d14c5d2SYehuda Sadeh */ 18953d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 18963d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 18973d14c5d2SYehuda Sadeh bool nofail) 18983d14c5d2SYehuda Sadeh { 18993d14c5d2SYehuda Sadeh int rc = 0; 19003d14c5d2SYehuda Sadeh 190170636773SAlex Elder /* Set up response incoming data and request outgoing data fields */ 19020fff87ecSAlex Elder 190370636773SAlex Elder ceph_osdc_msg_data_set(req->r_reply, &req->r_data_in); 190470636773SAlex Elder ceph_osdc_msg_data_set(req->r_request, &req->r_data_out); 19053d14c5d2SYehuda Sadeh 19063d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 19073d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1908dc4b870cSAlex Elder __register_request(osdc, req); 190992451b49SAlex Elder WARN_ON(req->r_sent); 191038d6453cSSage Weil rc = __map_request(osdc, req, 0); 19119d6fcb08SSage Weil if (rc < 0) { 19129d6fcb08SSage Weil if (nofail) { 19139d6fcb08SSage Weil dout("osdc_start_request failed map, " 19149d6fcb08SSage Weil " will retry %lld\n", req->r_tid); 19159d6fcb08SSage Weil rc = 0; 19169d6fcb08SSage Weil } 1917234af26fSDan Carpenter goto out_unlock; 19189d6fcb08SSage Weil } 19196f6c7006SSage Weil if (req->r_osd == NULL) { 19206f6c7006SSage Weil dout("send_request %p no up osds in pg\n", req); 19216f6c7006SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 19226f6c7006SSage Weil } else { 19237e2766a1SAlex Elder __send_queued(osdc); 192456e925b6SSage Weil } 19253d14c5d2SYehuda Sadeh rc = 0; 1926234af26fSDan Carpenter out_unlock: 19273d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19283d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 19293d14c5d2SYehuda Sadeh return rc; 19303d14c5d2SYehuda Sadeh } 19313d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 19323d14c5d2SYehuda Sadeh 19333d14c5d2SYehuda Sadeh /* 19343d14c5d2SYehuda Sadeh * wait for a request to complete 19353d14c5d2SYehuda Sadeh */ 19363d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 19373d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 19383d14c5d2SYehuda Sadeh { 19393d14c5d2SYehuda Sadeh int rc; 19403d14c5d2SYehuda Sadeh 19413d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 19423d14c5d2SYehuda Sadeh if (rc < 0) { 19433d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19443d14c5d2SYehuda Sadeh __cancel_request(req); 19453d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 19463d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 194725845472SSage Weil complete_request(req); 19483d14c5d2SYehuda Sadeh dout("wait_request tid %llu canceled/timed out\n", req->r_tid); 19493d14c5d2SYehuda Sadeh return rc; 19503d14c5d2SYehuda Sadeh } 19513d14c5d2SYehuda Sadeh 19523d14c5d2SYehuda Sadeh dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); 19533d14c5d2SYehuda Sadeh return req->r_result; 19543d14c5d2SYehuda Sadeh } 19553d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 19563d14c5d2SYehuda Sadeh 19573d14c5d2SYehuda Sadeh /* 19583d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 19593d14c5d2SYehuda Sadeh */ 19603d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 19613d14c5d2SYehuda Sadeh { 19623d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 19633d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 19643d14c5d2SYehuda Sadeh 19653d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19663d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 19673d14c5d2SYehuda Sadeh while (1) { 19683d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 19693d14c5d2SYehuda Sadeh if (!req) 19703d14c5d2SYehuda Sadeh break; 19713d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 19723d14c5d2SYehuda Sadeh break; 19733d14c5d2SYehuda Sadeh 19743d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 19753d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 19763d14c5d2SYehuda Sadeh continue; 19773d14c5d2SYehuda Sadeh 19783d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 19793d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19803d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 19813d14c5d2SYehuda Sadeh req->r_tid, last_tid); 19823d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 19833d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19843d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 19853d14c5d2SYehuda Sadeh } 19863d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19873d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 19883d14c5d2SYehuda Sadeh } 19893d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 19903d14c5d2SYehuda Sadeh 19913d14c5d2SYehuda Sadeh /* 19923d14c5d2SYehuda Sadeh * init, shutdown 19933d14c5d2SYehuda Sadeh */ 19943d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 19953d14c5d2SYehuda Sadeh { 19963d14c5d2SYehuda Sadeh int err; 19973d14c5d2SYehuda Sadeh 19983d14c5d2SYehuda Sadeh dout("init\n"); 19993d14c5d2SYehuda Sadeh osdc->client = client; 20003d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 20013d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 20023d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 20033d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 20043d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 20053d14c5d2SYehuda Sadeh osdc->last_tid = 0; 20063d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 20073d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 20083d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 20093d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 20106f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 20116f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2012a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 20133d14c5d2SYehuda Sadeh osdc->num_requests = 0; 20143d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 20153d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2016a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2017a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2018a40c4f10SYehuda Sadeh osdc->event_count = 0; 20193d14c5d2SYehuda Sadeh 20203d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 20213d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 20223d14c5d2SYehuda Sadeh 20233d14c5d2SYehuda Sadeh err = -ENOMEM; 20243d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 20253d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 20263d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 20273d14c5d2SYehuda Sadeh goto out; 20283d14c5d2SYehuda Sadeh 2029d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2030d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 20313d14c5d2SYehuda Sadeh "osd_op"); 20323d14c5d2SYehuda Sadeh if (err < 0) 20333d14c5d2SYehuda Sadeh goto out_mempool; 2034d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 20353d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 20363d14c5d2SYehuda Sadeh "osd_op_reply"); 20373d14c5d2SYehuda Sadeh if (err < 0) 20383d14c5d2SYehuda Sadeh goto out_msgpool; 2039a40c4f10SYehuda Sadeh 2040a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2041a40c4f10SYehuda Sadeh if (IS_ERR(osdc->notify_wq)) { 2042a40c4f10SYehuda Sadeh err = PTR_ERR(osdc->notify_wq); 2043a40c4f10SYehuda Sadeh osdc->notify_wq = NULL; 2044a40c4f10SYehuda Sadeh goto out_msgpool; 2045a40c4f10SYehuda Sadeh } 20463d14c5d2SYehuda Sadeh return 0; 20473d14c5d2SYehuda Sadeh 20483d14c5d2SYehuda Sadeh out_msgpool: 20493d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 20503d14c5d2SYehuda Sadeh out_mempool: 20513d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 20523d14c5d2SYehuda Sadeh out: 20533d14c5d2SYehuda Sadeh return err; 20543d14c5d2SYehuda Sadeh } 20553d14c5d2SYehuda Sadeh 20563d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 20573d14c5d2SYehuda Sadeh { 2058a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2059a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 20603d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 20613d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 20623d14c5d2SYehuda Sadeh if (osdc->osdmap) { 20633d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 20643d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 20653d14c5d2SYehuda Sadeh } 2066aca420bcSSage Weil remove_all_osds(osdc); 20673d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 20683d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 20693d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 20703d14c5d2SYehuda Sadeh } 20713d14c5d2SYehuda Sadeh 20723d14c5d2SYehuda Sadeh /* 20733d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 20743d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 20753d14c5d2SYehuda Sadeh */ 20763d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 20773d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 20783d14c5d2SYehuda Sadeh u64 off, u64 *plen, 20793d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2080b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 20813d14c5d2SYehuda Sadeh { 20823d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 20830fff87ecSAlex Elder struct ceph_osd_data *osd_data; 20843d14c5d2SYehuda Sadeh int rc = 0; 20853d14c5d2SYehuda Sadeh 20863d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 20873d14c5d2SYehuda Sadeh vino.snap, off, *plen); 20883d14c5d2SYehuda Sadeh req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 20893d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 20903d14c5d2SYehuda Sadeh NULL, 0, truncate_seq, truncate_size, NULL, 2091153e5167SAlex Elder false); 20926816282dSSage Weil if (IS_ERR(req)) 20936816282dSSage Weil return PTR_ERR(req); 20943d14c5d2SYehuda Sadeh 20953d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 20960fff87ecSAlex Elder 20970fff87ecSAlex Elder osd_data = &req->r_data_in; 20980fff87ecSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 20990fff87ecSAlex Elder osd_data->pages = pages; 2100e0c59487SAlex Elder osd_data->length = *plen; 21010fff87ecSAlex Elder osd_data->alignment = page_align; 21023d14c5d2SYehuda Sadeh 2103e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 2104e0c59487SAlex Elder off, *plen, osd_data->length, page_align); 21053d14c5d2SYehuda Sadeh 21063d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 21073d14c5d2SYehuda Sadeh if (!rc) 21083d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 21093d14c5d2SYehuda Sadeh 21103d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 21113d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 21123d14c5d2SYehuda Sadeh return rc; 21133d14c5d2SYehuda Sadeh } 21143d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 21153d14c5d2SYehuda Sadeh 21163d14c5d2SYehuda Sadeh /* 21173d14c5d2SYehuda Sadeh * do a synchronous write on N pages 21183d14c5d2SYehuda Sadeh */ 21193d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 21203d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 21213d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 21223d14c5d2SYehuda Sadeh u64 off, u64 len, 21233d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 21243d14c5d2SYehuda Sadeh struct timespec *mtime, 212524808826SAlex Elder struct page **pages, int num_pages) 21263d14c5d2SYehuda Sadeh { 21273d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 21280fff87ecSAlex Elder struct ceph_osd_data *osd_data; 21293d14c5d2SYehuda Sadeh int rc = 0; 2130b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 21313d14c5d2SYehuda Sadeh 21323d14c5d2SYehuda Sadeh BUG_ON(vino.snap != CEPH_NOSNAP); 21333d14c5d2SYehuda Sadeh req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 21343d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 213524808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2136fbf8685fSAlex Elder snapc, 0, 21373d14c5d2SYehuda Sadeh truncate_seq, truncate_size, mtime, 2138153e5167SAlex Elder true); 21396816282dSSage Weil if (IS_ERR(req)) 21406816282dSSage Weil return PTR_ERR(req); 21413d14c5d2SYehuda Sadeh 21423d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 21430fff87ecSAlex Elder osd_data = &req->r_data_out; 21440fff87ecSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 21450fff87ecSAlex Elder osd_data->pages = pages; 2146e0c59487SAlex Elder osd_data->length = len; 21470fff87ecSAlex Elder osd_data->alignment = page_align; 2148e0c59487SAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, osd_data->length); 21493d14c5d2SYehuda Sadeh 215087f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 21513d14c5d2SYehuda Sadeh if (!rc) 21523d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 21533d14c5d2SYehuda Sadeh 21543d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 21553d14c5d2SYehuda Sadeh if (rc == 0) 21563d14c5d2SYehuda Sadeh rc = len; 21573d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 21583d14c5d2SYehuda Sadeh return rc; 21593d14c5d2SYehuda Sadeh } 21603d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 21613d14c5d2SYehuda Sadeh 21623d14c5d2SYehuda Sadeh /* 21633d14c5d2SYehuda Sadeh * handle incoming message 21643d14c5d2SYehuda Sadeh */ 21653d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 21663d14c5d2SYehuda Sadeh { 21673d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 21683d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 21693d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 21703d14c5d2SYehuda Sadeh 21713d14c5d2SYehuda Sadeh if (!osd) 21723d14c5d2SYehuda Sadeh goto out; 21733d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 21743d14c5d2SYehuda Sadeh 21753d14c5d2SYehuda Sadeh switch (type) { 21763d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 21773d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 21783d14c5d2SYehuda Sadeh break; 21793d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 21803d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 21813d14c5d2SYehuda Sadeh break; 2182a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2183a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2184a40c4f10SYehuda Sadeh break; 21853d14c5d2SYehuda Sadeh 21863d14c5d2SYehuda Sadeh default: 21873d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 21883d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 21893d14c5d2SYehuda Sadeh } 21903d14c5d2SYehuda Sadeh out: 21913d14c5d2SYehuda Sadeh ceph_msg_put(msg); 21923d14c5d2SYehuda Sadeh } 21933d14c5d2SYehuda Sadeh 21943d14c5d2SYehuda Sadeh /* 21953d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 21963d14c5d2SYehuda Sadeh * pages. 21973d14c5d2SYehuda Sadeh */ 21983d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 21993d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 22003d14c5d2SYehuda Sadeh int *skip) 22013d14c5d2SYehuda Sadeh { 22023d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22033d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 22043d14c5d2SYehuda Sadeh struct ceph_msg *m; 22053d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 22063d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 22073d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 22083d14c5d2SYehuda Sadeh u64 tid; 22093d14c5d2SYehuda Sadeh 22103d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 22113d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 22123d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 22133d14c5d2SYehuda Sadeh if (!req) { 22143d14c5d2SYehuda Sadeh *skip = 1; 22153d14c5d2SYehuda Sadeh m = NULL; 2216756a16a5SSage Weil dout("get_reply unknown tid %llu from osd%d\n", tid, 22173d14c5d2SYehuda Sadeh osd->o_osd); 22183d14c5d2SYehuda Sadeh goto out; 22193d14c5d2SYehuda Sadeh } 22203d14c5d2SYehuda Sadeh 22213d14c5d2SYehuda Sadeh if (req->r_con_filling_msg) { 22228921d114SAlex Elder dout("%s revoking msg %p from old con %p\n", __func__, 22233d14c5d2SYehuda Sadeh req->r_reply, req->r_con_filling_msg); 22248921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 22250d47766fSSage Weil req->r_con_filling_msg->ops->put(req->r_con_filling_msg); 22263d14c5d2SYehuda Sadeh req->r_con_filling_msg = NULL; 22273d14c5d2SYehuda Sadeh } 22283d14c5d2SYehuda Sadeh 22293d14c5d2SYehuda Sadeh if (front > req->r_reply->front.iov_len) { 22303d14c5d2SYehuda Sadeh pr_warning("get_reply front %d > preallocated %d\n", 22313d14c5d2SYehuda Sadeh front, (int)req->r_reply->front.iov_len); 2232b61c2763SSage Weil m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); 22333d14c5d2SYehuda Sadeh if (!m) 22343d14c5d2SYehuda Sadeh goto out; 22353d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 22363d14c5d2SYehuda Sadeh req->r_reply = m; 22373d14c5d2SYehuda Sadeh } 22383d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 22393d14c5d2SYehuda Sadeh 22403d14c5d2SYehuda Sadeh if (data_len > 0) { 22410fff87ecSAlex Elder struct ceph_osd_data *osd_data = &req->r_data_in; 22420fff87ecSAlex Elder 22430fff87ecSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 22440fff87ecSAlex Elder if (osd_data->pages && 2245e0c59487SAlex Elder unlikely(osd_data->length < data_len)) { 22462ac2b7a6SAlex Elder 2247e0c59487SAlex Elder pr_warning("tid %lld reply has %d bytes " 2248e0c59487SAlex Elder "we had only %llu bytes ready\n", 2249e0c59487SAlex Elder tid, data_len, osd_data->length); 22503d14c5d2SYehuda Sadeh *skip = 1; 22513d14c5d2SYehuda Sadeh ceph_msg_put(m); 22523d14c5d2SYehuda Sadeh m = NULL; 22533d14c5d2SYehuda Sadeh goto out; 22543d14c5d2SYehuda Sadeh } 22553d14c5d2SYehuda Sadeh } 22562ac2b7a6SAlex Elder } 22573d14c5d2SYehuda Sadeh *skip = 0; 22580d47766fSSage Weil req->r_con_filling_msg = con->ops->get(con); 22593d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 22603d14c5d2SYehuda Sadeh 22613d14c5d2SYehuda Sadeh out: 22623d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 22633d14c5d2SYehuda Sadeh return m; 22643d14c5d2SYehuda Sadeh 22653d14c5d2SYehuda Sadeh } 22663d14c5d2SYehuda Sadeh 22673d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 22683d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 22693d14c5d2SYehuda Sadeh int *skip) 22703d14c5d2SYehuda Sadeh { 22713d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22723d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 22733d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 22743d14c5d2SYehuda Sadeh 22751c20f2d2SAlex Elder *skip = 0; 22763d14c5d2SYehuda Sadeh switch (type) { 22773d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2278a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2279b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 22803d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 22813d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 22823d14c5d2SYehuda Sadeh default: 22833d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 22843d14c5d2SYehuda Sadeh osd->o_osd); 22853d14c5d2SYehuda Sadeh *skip = 1; 22863d14c5d2SYehuda Sadeh return NULL; 22873d14c5d2SYehuda Sadeh } 22883d14c5d2SYehuda Sadeh } 22893d14c5d2SYehuda Sadeh 22903d14c5d2SYehuda Sadeh /* 22913d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 22923d14c5d2SYehuda Sadeh */ 22933d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 22943d14c5d2SYehuda Sadeh { 22953d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22963d14c5d2SYehuda Sadeh if (get_osd(osd)) 22973d14c5d2SYehuda Sadeh return con; 22983d14c5d2SYehuda Sadeh return NULL; 22993d14c5d2SYehuda Sadeh } 23003d14c5d2SYehuda Sadeh 23013d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 23023d14c5d2SYehuda Sadeh { 23033d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 23043d14c5d2SYehuda Sadeh put_osd(osd); 23053d14c5d2SYehuda Sadeh } 23063d14c5d2SYehuda Sadeh 23073d14c5d2SYehuda Sadeh /* 23083d14c5d2SYehuda Sadeh * authentication 23093d14c5d2SYehuda Sadeh */ 2310a3530df3SAlex Elder /* 2311a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2312a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2313a3530df3SAlex Elder */ 2314a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 23158f43fb53SAlex Elder int *proto, int force_new) 23163d14c5d2SYehuda Sadeh { 23173d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23183d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23193d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 232074f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 23213d14c5d2SYehuda Sadeh 232274f1869fSAlex Elder if (force_new && auth->authorizer) { 232327859f97SSage Weil ceph_auth_destroy_authorizer(ac, auth->authorizer); 232474f1869fSAlex Elder auth->authorizer = NULL; 23253d14c5d2SYehuda Sadeh } 232627859f97SSage Weil if (!auth->authorizer) { 232727859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2328a3530df3SAlex Elder auth); 23293d14c5d2SYehuda Sadeh if (ret) 2330a3530df3SAlex Elder return ERR_PTR(ret); 233127859f97SSage Weil } else { 233227859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 23330bed9b5cSSage Weil auth); 23340bed9b5cSSage Weil if (ret) 23350bed9b5cSSage Weil return ERR_PTR(ret); 23363d14c5d2SYehuda Sadeh } 23373d14c5d2SYehuda Sadeh *proto = ac->protocol; 233874f1869fSAlex Elder 2339a3530df3SAlex Elder return auth; 23403d14c5d2SYehuda Sadeh } 23413d14c5d2SYehuda Sadeh 23423d14c5d2SYehuda Sadeh 23433d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 23443d14c5d2SYehuda Sadeh { 23453d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23463d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23473d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 23483d14c5d2SYehuda Sadeh 234927859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 23503d14c5d2SYehuda Sadeh } 23513d14c5d2SYehuda Sadeh 23523d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 23533d14c5d2SYehuda Sadeh { 23543d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23553d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23563d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 23573d14c5d2SYehuda Sadeh 235827859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 23593d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 23603d14c5d2SYehuda Sadeh } 23613d14c5d2SYehuda Sadeh 23623d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 23633d14c5d2SYehuda Sadeh .get = get_osd_con, 23643d14c5d2SYehuda Sadeh .put = put_osd_con, 23653d14c5d2SYehuda Sadeh .dispatch = dispatch, 23663d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 23673d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 23683d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 23693d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 23703d14c5d2SYehuda Sadeh .fault = osd_reset, 23713d14c5d2SYehuda Sadeh }; 2372