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 static int op_has_extent(int op) 363d14c5d2SYehuda Sadeh { 373d14c5d2SYehuda Sadeh return (op == CEPH_OSD_OP_READ || 383d14c5d2SYehuda Sadeh op == CEPH_OSD_OP_WRITE); 393d14c5d2SYehuda Sadeh } 403d14c5d2SYehuda Sadeh 413d14c5d2SYehuda Sadeh /* 423d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 433d14c5d2SYehuda Sadeh * 443d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 453d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 463d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 473d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 483d14c5d2SYehuda Sadeh * access to storage. 493d14c5d2SYehuda Sadeh * 503d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 513d14c5d2SYehuda Sadeh * are described by the osd map. 523d14c5d2SYehuda Sadeh * 533d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 543d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 553d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 563d14c5d2SYehuda Sadeh * channel with an OSD is reset. 573d14c5d2SYehuda Sadeh */ 583d14c5d2SYehuda Sadeh 593d14c5d2SYehuda Sadeh /* 603d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 613d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 623d14c5d2SYehuda Sadeh * object boundary. 633d14c5d2SYehuda Sadeh * 643d14c5d2SYehuda Sadeh * fill osd op in request message. 653d14c5d2SYehuda Sadeh */ 66dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 6747a05811SAlex Elder struct ceph_osd_req_op *op, u64 *bno) 683d14c5d2SYehuda Sadeh { 6960e56f13SAlex Elder u64 orig_len = *plen; 7060e56f13SAlex Elder u64 objoff = 0; 7160e56f13SAlex Elder u64 objlen = 0; 72d63b77f4SSage Weil int r; 733d14c5d2SYehuda Sadeh 7460e56f13SAlex Elder /* object extent? */ 7547a05811SAlex Elder r = ceph_calc_file_object_mapping(layout, off, orig_len, bno, 7660e56f13SAlex Elder &objoff, &objlen); 77d63b77f4SSage Weil if (r < 0) 78d63b77f4SSage Weil return r; 7960e56f13SAlex Elder if (objlen < orig_len) { 8060e56f13SAlex Elder *plen = objlen; 8160e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 8260e56f13SAlex Elder orig_len - *plen, off, *plen); 8360e56f13SAlex Elder } 8460e56f13SAlex Elder 8560e56f13SAlex Elder if (op_has_extent(op->op)) { 8660e56f13SAlex Elder u32 osize = le32_to_cpu(layout->fl_object_size); 8760e56f13SAlex Elder op->extent.offset = objoff; 8860e56f13SAlex Elder op->extent.length = objlen; 8960e56f13SAlex Elder if (op->extent.truncate_size <= off - objoff) { 9060e56f13SAlex Elder op->extent.truncate_size = 0; 9160e56f13SAlex Elder } else { 9260e56f13SAlex Elder op->extent.truncate_size -= off - objoff; 9360e56f13SAlex Elder if (op->extent.truncate_size > osize) 9460e56f13SAlex Elder op->extent.truncate_size = osize; 9560e56f13SAlex Elder } 9660e56f13SAlex Elder } 9760e56f13SAlex Elder if (op->op == CEPH_OSD_OP_WRITE) 9860e56f13SAlex Elder op->payload_len = *plen; 9960e56f13SAlex Elder 10060cf5992SAlex Elder dout("calc_layout bno=%llx %llu~%llu\n", *bno, objoff, objlen); 1013d14c5d2SYehuda Sadeh 1023ff5f385SAlex Elder return 0; 1033d14c5d2SYehuda Sadeh } 1043d14c5d2SYehuda Sadeh 1053d14c5d2SYehuda Sadeh /* 1063d14c5d2SYehuda Sadeh * requests 1073d14c5d2SYehuda Sadeh */ 1083d14c5d2SYehuda Sadeh void ceph_osdc_release_request(struct kref *kref) 1093d14c5d2SYehuda Sadeh { 110e0c59487SAlex Elder int num_pages; 1113d14c5d2SYehuda Sadeh struct ceph_osd_request *req = container_of(kref, 1123d14c5d2SYehuda Sadeh struct ceph_osd_request, 1133d14c5d2SYehuda Sadeh r_kref); 1143d14c5d2SYehuda Sadeh 1153d14c5d2SYehuda Sadeh if (req->r_request) 1163d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 1173d14c5d2SYehuda Sadeh if (req->r_con_filling_msg) { 1189cbb1d72SAlex Elder dout("%s revoking msg %p from con %p\n", __func__, 1199cbb1d72SAlex Elder req->r_reply, req->r_con_filling_msg); 1208921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 1210d47766fSSage Weil req->r_con_filling_msg->ops->put(req->r_con_filling_msg); 1229cbb1d72SAlex Elder req->r_con_filling_msg = NULL; 1233d14c5d2SYehuda Sadeh } 124ab8cb34aSAlex Elder if (req->r_reply) 125ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 1260fff87ecSAlex Elder 1270fff87ecSAlex Elder if (req->r_data_in.type == CEPH_OSD_DATA_TYPE_PAGES && 128e0c59487SAlex Elder req->r_data_in.own_pages) { 129e0c59487SAlex Elder num_pages = calc_pages_for((u64)req->r_data_in.alignment, 130e0c59487SAlex Elder (u64)req->r_data_in.length); 131e0c59487SAlex Elder ceph_release_page_vector(req->r_data_in.pages, num_pages); 132e0c59487SAlex Elder } 1330fff87ecSAlex Elder if (req->r_data_out.type == CEPH_OSD_DATA_TYPE_PAGES && 134e0c59487SAlex Elder req->r_data_out.own_pages) { 135e0c59487SAlex Elder num_pages = calc_pages_for((u64)req->r_data_out.alignment, 136e0c59487SAlex Elder (u64)req->r_data_out.length); 137e0c59487SAlex Elder ceph_release_page_vector(req->r_data_out.pages, num_pages); 138e0c59487SAlex Elder } 1390fff87ecSAlex Elder 1403d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 1413d14c5d2SYehuda Sadeh if (req->r_mempool) 1423d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 1433d14c5d2SYehuda Sadeh else 1443d14c5d2SYehuda Sadeh kfree(req); 1453d14c5d2SYehuda Sadeh } 1463d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_release_request); 1473d14c5d2SYehuda Sadeh 1483d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 1493d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 1501b83bef2SSage Weil unsigned int num_ops, 1513d14c5d2SYehuda Sadeh bool use_mempool, 15254a54007SAlex Elder gfp_t gfp_flags) 1533d14c5d2SYehuda Sadeh { 1543d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1553d14c5d2SYehuda Sadeh struct ceph_msg *msg; 1561b83bef2SSage Weil size_t msg_size; 1573d14c5d2SYehuda Sadeh 1581b83bef2SSage Weil msg_size = 4 + 4 + 8 + 8 + 4+8; 1591b83bef2SSage Weil msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 1601b83bef2SSage Weil msg_size += 1 + 8 + 4 + 4; /* pg_t */ 1611b83bef2SSage Weil msg_size += 4 + MAX_OBJ_NAME_SIZE; 1621b83bef2SSage Weil msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); 1631b83bef2SSage Weil msg_size += 8; /* snapid */ 1641b83bef2SSage Weil msg_size += 8; /* snap_seq */ 1651b83bef2SSage Weil msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ 1661b83bef2SSage Weil msg_size += 4; 1673d14c5d2SYehuda Sadeh 1683d14c5d2SYehuda Sadeh if (use_mempool) { 1693d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 1703d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 1713d14c5d2SYehuda Sadeh } else { 1723d14c5d2SYehuda Sadeh req = kzalloc(sizeof(*req), gfp_flags); 1733d14c5d2SYehuda Sadeh } 1743d14c5d2SYehuda Sadeh if (req == NULL) 1753d14c5d2SYehuda Sadeh return NULL; 1763d14c5d2SYehuda Sadeh 1773d14c5d2SYehuda Sadeh req->r_osdc = osdc; 1783d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 1793d14c5d2SYehuda Sadeh 1803d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 1813d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 1823d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 183a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 1843d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 185a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 186a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_osd); 187935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 188cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 189cd43045cSSage Weil 1903d14c5d2SYehuda Sadeh /* create reply message */ 1913d14c5d2SYehuda Sadeh if (use_mempool) 1923d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 1933d14c5d2SYehuda Sadeh else 1943d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 195b61c2763SSage Weil OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 1963d14c5d2SYehuda Sadeh if (!msg) { 1973d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 1983d14c5d2SYehuda Sadeh return NULL; 1993d14c5d2SYehuda Sadeh } 2003d14c5d2SYehuda Sadeh req->r_reply = msg; 2013d14c5d2SYehuda Sadeh 2020fff87ecSAlex Elder req->r_data_in.type = CEPH_OSD_DATA_TYPE_NONE; 2030fff87ecSAlex Elder req->r_data_out.type = CEPH_OSD_DATA_TYPE_NONE; 204d50b409fSSage Weil 2053d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 2063d14c5d2SYehuda Sadeh if (use_mempool) 2073d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 2083d14c5d2SYehuda Sadeh else 209b61c2763SSage Weil msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 2103d14c5d2SYehuda Sadeh if (!msg) { 2113d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 2123d14c5d2SYehuda Sadeh return NULL; 2133d14c5d2SYehuda Sadeh } 2143d14c5d2SYehuda Sadeh 2153d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 2163d14c5d2SYehuda Sadeh 2173d14c5d2SYehuda Sadeh req->r_request = msg; 2183d14c5d2SYehuda Sadeh 2193d14c5d2SYehuda Sadeh return req; 2203d14c5d2SYehuda Sadeh } 2213d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 2223d14c5d2SYehuda Sadeh 223a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 224a8dd0a37SAlex Elder { 225a8dd0a37SAlex Elder switch (opcode) { 226a8dd0a37SAlex Elder case CEPH_OSD_OP_READ: 227a8dd0a37SAlex Elder case CEPH_OSD_OP_STAT: 228a8dd0a37SAlex Elder case CEPH_OSD_OP_MAPEXT: 229a8dd0a37SAlex Elder case CEPH_OSD_OP_MASKTRUNC: 230a8dd0a37SAlex Elder case CEPH_OSD_OP_SPARSE_READ: 231a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY: 232a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY_ACK: 233a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_VER: 234a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITE: 235a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITEFULL: 236a8dd0a37SAlex Elder case CEPH_OSD_OP_TRUNCATE: 237a8dd0a37SAlex Elder case CEPH_OSD_OP_ZERO: 238a8dd0a37SAlex Elder case CEPH_OSD_OP_DELETE: 239a8dd0a37SAlex Elder case CEPH_OSD_OP_APPEND: 240a8dd0a37SAlex Elder case CEPH_OSD_OP_STARTSYNC: 241a8dd0a37SAlex Elder case CEPH_OSD_OP_SETTRUNC: 242a8dd0a37SAlex Elder case CEPH_OSD_OP_TRIMTRUNC: 243a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPUP: 244a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPPUT: 245a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPGET: 246a8dd0a37SAlex Elder case CEPH_OSD_OP_CREATE: 247a8dd0a37SAlex Elder case CEPH_OSD_OP_ROLLBACK: 248a8dd0a37SAlex Elder case CEPH_OSD_OP_WATCH: 249a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETKEYS: 250a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALS: 251a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETHEADER: 252a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALSBYKEYS: 253a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETVALS: 254a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETHEADER: 255a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPCLEAR: 256a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPRMKEYS: 257a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAP_CMP: 258a8dd0a37SAlex Elder case CEPH_OSD_OP_CLONERANGE: 259a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_SRC_VERSION: 260a8dd0a37SAlex Elder case CEPH_OSD_OP_SRC_CMPXATTR: 261a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTR: 262a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTRS: 263a8dd0a37SAlex Elder case CEPH_OSD_OP_CMPXATTR: 264a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTR: 265a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTRS: 266a8dd0a37SAlex Elder case CEPH_OSD_OP_RESETXATTRS: 267a8dd0a37SAlex Elder case CEPH_OSD_OP_RMXATTR: 268a8dd0a37SAlex Elder case CEPH_OSD_OP_PULL: 269a8dd0a37SAlex Elder case CEPH_OSD_OP_PUSH: 270a8dd0a37SAlex Elder case CEPH_OSD_OP_BALANCEREADS: 271a8dd0a37SAlex Elder case CEPH_OSD_OP_UNBALANCEREADS: 272a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB: 273a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_RESERVE: 274a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_UNRESERVE: 275a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_STOP: 276a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_MAP: 277a8dd0a37SAlex Elder case CEPH_OSD_OP_WRLOCK: 278a8dd0a37SAlex Elder case CEPH_OSD_OP_WRUNLOCK: 279a8dd0a37SAlex Elder case CEPH_OSD_OP_RDLOCK: 280a8dd0a37SAlex Elder case CEPH_OSD_OP_RDUNLOCK: 281a8dd0a37SAlex Elder case CEPH_OSD_OP_UPLOCK: 282a8dd0a37SAlex Elder case CEPH_OSD_OP_DNLOCK: 283a8dd0a37SAlex Elder case CEPH_OSD_OP_CALL: 284a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS: 285a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS_FILTER: 286a8dd0a37SAlex Elder return true; 287a8dd0a37SAlex Elder default: 288a8dd0a37SAlex Elder return false; 289a8dd0a37SAlex Elder } 290a8dd0a37SAlex Elder } 291a8dd0a37SAlex Elder 29233803f33SAlex Elder /* 29333803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 29433803f33SAlex Elder * other information associated with them. It also serves as a 29533803f33SAlex Elder * common init routine for all the other init functions, below. 29633803f33SAlex Elder */ 29733803f33SAlex Elder void osd_req_op_init(struct ceph_osd_req_op *op, u16 opcode) 29833803f33SAlex Elder { 29933803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 30033803f33SAlex Elder 30133803f33SAlex Elder memset(op, 0, sizeof (*op)); 30233803f33SAlex Elder 30333803f33SAlex Elder op->op = opcode; 30433803f33SAlex Elder } 30533803f33SAlex Elder 30633803f33SAlex Elder void osd_req_op_extent_init(struct ceph_osd_req_op *op, u16 opcode, 30733803f33SAlex Elder u64 offset, u64 length, 30833803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 30933803f33SAlex Elder { 31033803f33SAlex Elder size_t payload_len = 0; 31133803f33SAlex Elder 31233803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); 31333803f33SAlex Elder 31433803f33SAlex Elder osd_req_op_init(op, opcode); 31533803f33SAlex Elder 31633803f33SAlex Elder op->extent.offset = offset; 31733803f33SAlex Elder op->extent.length = length; 31833803f33SAlex Elder op->extent.truncate_size = truncate_size; 31933803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 32033803f33SAlex Elder if (opcode == CEPH_OSD_OP_WRITE) 32133803f33SAlex Elder payload_len += length; 32233803f33SAlex Elder 32333803f33SAlex Elder op->payload_len = payload_len; 32433803f33SAlex Elder } 32533803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 32633803f33SAlex Elder 32733803f33SAlex Elder void osd_req_op_cls_init(struct ceph_osd_req_op *op, u16 opcode, 32833803f33SAlex Elder const char *class, const char *method, 32933803f33SAlex Elder const void *request_data, size_t request_data_size) 33033803f33SAlex Elder { 33133803f33SAlex Elder size_t payload_len = 0; 33233803f33SAlex Elder size_t size; 33333803f33SAlex Elder 33433803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 33533803f33SAlex Elder 33633803f33SAlex Elder osd_req_op_init(op, opcode); 33733803f33SAlex Elder 33833803f33SAlex Elder op->cls.class_name = class; 33933803f33SAlex Elder size = strlen(class); 34033803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 34133803f33SAlex Elder op->cls.class_len = size; 34233803f33SAlex Elder payload_len += size; 34333803f33SAlex Elder 34433803f33SAlex Elder op->cls.method_name = method; 34533803f33SAlex Elder size = strlen(method); 34633803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 34733803f33SAlex Elder op->cls.method_len = size; 34833803f33SAlex Elder payload_len += size; 34933803f33SAlex Elder 35033803f33SAlex Elder op->cls.indata = request_data; 35133803f33SAlex Elder BUG_ON(request_data_size > (size_t) U32_MAX); 35233803f33SAlex Elder op->cls.indata_len = (u32) request_data_size; 35333803f33SAlex Elder payload_len += request_data_size; 35433803f33SAlex Elder 35533803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 35633803f33SAlex Elder 35733803f33SAlex Elder op->payload_len = payload_len; 35833803f33SAlex Elder } 35933803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 36033803f33SAlex Elder 36133803f33SAlex Elder void osd_req_op_watch_init(struct ceph_osd_req_op *op, u16 opcode, 36233803f33SAlex Elder u64 cookie, u64 version, int flag) 36333803f33SAlex Elder { 36433803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 36533803f33SAlex Elder 36633803f33SAlex Elder osd_req_op_init(op, opcode); 36733803f33SAlex Elder 36833803f33SAlex Elder op->watch.cookie = cookie; 36933803f33SAlex Elder /* op->watch.ver = version; */ /* XXX 3847 */ 37033803f33SAlex Elder op->watch.ver = cpu_to_le64(version); 37133803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 37233803f33SAlex Elder op->watch.flag = (u8) 1; 37333803f33SAlex Elder } 37433803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 37533803f33SAlex Elder 376175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 3773d14c5d2SYehuda Sadeh struct ceph_osd_op *dst, 3783d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src) 3793d14c5d2SYehuda Sadeh { 380175face2SAlex Elder u64 out_data_len = 0; 38195e072ebSAlex Elder struct ceph_pagelist *pagelist; 382175face2SAlex Elder 383a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 384a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 385a8dd0a37SAlex Elder 386a8dd0a37SAlex Elder return 0; 387a8dd0a37SAlex Elder } 3883d14c5d2SYehuda Sadeh 389065a68f9SAlex Elder switch (src->op) { 390fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 391fbfab539SAlex Elder break; 3923d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 3933d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 394175face2SAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 395175face2SAlex Elder out_data_len = src->extent.length; 396175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 397175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 3983d14c5d2SYehuda Sadeh dst->extent.truncate_size = 3993d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 4003d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 4013d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 4023d14c5d2SYehuda Sadeh break; 4033d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 40495e072ebSAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 40595e072ebSAlex Elder BUG_ON(!pagelist); 40695e072ebSAlex Elder ceph_pagelist_init(pagelist); 40795e072ebSAlex Elder 4083d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 4093d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 4103d14c5d2SYehuda Sadeh dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 41195e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.class_name, 4123d14c5d2SYehuda Sadeh src->cls.class_len); 41395e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.method_name, 4143d14c5d2SYehuda Sadeh src->cls.method_len); 41595e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.indata, 4163d14c5d2SYehuda Sadeh src->cls.indata_len); 41795e072ebSAlex Elder 41895e072ebSAlex Elder req->r_data_out.type = CEPH_OSD_DATA_TYPE_PAGELIST; 41995e072ebSAlex Elder req->r_data_out.pagelist = pagelist; 42095e072ebSAlex Elder out_data_len = pagelist->length; 4213d14c5d2SYehuda Sadeh break; 4223d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 4233d14c5d2SYehuda Sadeh break; 424a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 425a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 426a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 427a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 428a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 429a40c4f10SYehuda Sadeh break; 4303d14c5d2SYehuda Sadeh default: 4314c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 4328f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 4334c46459cSAlex Elder WARN_ON(1); 434a8dd0a37SAlex Elder 435a8dd0a37SAlex Elder return 0; 4363d14c5d2SYehuda Sadeh } 437a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 4383d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 439175face2SAlex Elder 440175face2SAlex Elder return out_data_len; 4413d14c5d2SYehuda Sadeh } 4423d14c5d2SYehuda Sadeh 4433d14c5d2SYehuda Sadeh /* 4443d14c5d2SYehuda Sadeh * build new request AND message 4453d14c5d2SYehuda Sadeh * 4463d14c5d2SYehuda Sadeh */ 4473d14c5d2SYehuda Sadeh void ceph_osdc_build_request(struct ceph_osd_request *req, 448175face2SAlex Elder u64 off, unsigned int num_ops, 4493d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_ops, 4504d6b250bSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 451af77f26cSAlex Elder struct timespec *mtime) 4523d14c5d2SYehuda Sadeh { 4533d14c5d2SYehuda Sadeh struct ceph_msg *msg = req->r_request; 4543d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_op; 4553d14c5d2SYehuda Sadeh void *p; 4561b83bef2SSage Weil size_t msg_size; 4573d14c5d2SYehuda Sadeh int flags = req->r_flags; 458f44246e3SAlex Elder u64 data_len; 4593d14c5d2SYehuda Sadeh int i; 4603d14c5d2SYehuda Sadeh 4611b83bef2SSage Weil req->r_num_ops = num_ops; 4621b83bef2SSage Weil req->r_snapid = snap_id; 4633d14c5d2SYehuda Sadeh req->r_snapc = ceph_get_snap_context(snapc); 4643d14c5d2SYehuda Sadeh 4651b83bef2SSage Weil /* encode request */ 4661b83bef2SSage Weil msg->hdr.version = cpu_to_le16(4); 4673d14c5d2SYehuda Sadeh 4681b83bef2SSage Weil p = msg->front.iov_base; 4691b83bef2SSage Weil ceph_encode_32(&p, 1); /* client_inc is always 1 */ 4701b83bef2SSage Weil req->r_request_osdmap_epoch = p; 4711b83bef2SSage Weil p += 4; 4721b83bef2SSage Weil req->r_request_flags = p; 4731b83bef2SSage Weil p += 4; 4741b83bef2SSage Weil if (req->r_flags & CEPH_OSD_FLAG_WRITE) 4751b83bef2SSage Weil ceph_encode_timespec(p, mtime); 4761b83bef2SSage Weil p += sizeof(struct ceph_timespec); 4771b83bef2SSage Weil req->r_request_reassert_version = p; 4781b83bef2SSage Weil p += sizeof(struct ceph_eversion); /* will get filled in */ 4791b83bef2SSage Weil 4801b83bef2SSage Weil /* oloc */ 4811b83bef2SSage Weil ceph_encode_8(&p, 4); 4821b83bef2SSage Weil ceph_encode_8(&p, 4); 4831b83bef2SSage Weil ceph_encode_32(&p, 8 + 4 + 4); 4841b83bef2SSage Weil req->r_request_pool = p; 4851b83bef2SSage Weil p += 8; 4861b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 4871b83bef2SSage Weil ceph_encode_32(&p, 0); /* key len */ 4881b83bef2SSage Weil 4891b83bef2SSage Weil ceph_encode_8(&p, 1); 4901b83bef2SSage Weil req->r_request_pgid = p; 4911b83bef2SSage Weil p += 8 + 4; 4921b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 4931b83bef2SSage Weil 4941b83bef2SSage Weil /* oid */ 4951b83bef2SSage Weil ceph_encode_32(&p, req->r_oid_len); 496af77f26cSAlex Elder memcpy(p, req->r_oid, req->r_oid_len); 4971b83bef2SSage Weil dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); 498af77f26cSAlex Elder p += req->r_oid_len; 4993d14c5d2SYehuda Sadeh 500175face2SAlex Elder /* ops--can imply data */ 5011b83bef2SSage Weil ceph_encode_16(&p, num_ops); 5023d14c5d2SYehuda Sadeh src_op = src_ops; 5031b83bef2SSage Weil req->r_request_ops = p; 504175face2SAlex Elder data_len = 0; 5051b83bef2SSage Weil for (i = 0; i < num_ops; i++, src_op++) { 506175face2SAlex Elder data_len += osd_req_encode_op(req, p, src_op); 5071b83bef2SSage Weil p += sizeof(struct ceph_osd_op); 5081b83bef2SSage Weil } 5093d14c5d2SYehuda Sadeh 5101b83bef2SSage Weil /* snaps */ 5111b83bef2SSage Weil ceph_encode_64(&p, req->r_snapid); 5121b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 5131b83bef2SSage Weil ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 5141b83bef2SSage Weil if (req->r_snapc) { 5153d14c5d2SYehuda Sadeh for (i = 0; i < snapc->num_snaps; i++) { 5161b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc->snaps[i]); 5173d14c5d2SYehuda Sadeh } 5183d14c5d2SYehuda Sadeh } 5193d14c5d2SYehuda Sadeh 5201b83bef2SSage Weil req->r_request_attempts = p; 5211b83bef2SSage Weil p += 4; 5221b83bef2SSage Weil 523175face2SAlex Elder /* data */ 5240baa1bd9SAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 5250baa1bd9SAlex Elder u16 data_off; 5260baa1bd9SAlex Elder 5270baa1bd9SAlex Elder /* 5280baa1bd9SAlex Elder * The header "data_off" is a hint to the receiver 5290baa1bd9SAlex Elder * allowing it to align received data into its 5300baa1bd9SAlex Elder * buffers such that there's no need to re-copy 5310baa1bd9SAlex Elder * it before writing it to disk (direct I/O). 5320baa1bd9SAlex Elder */ 5330baa1bd9SAlex Elder data_off = (u16) (off & 0xffff); 5340baa1bd9SAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 5350baa1bd9SAlex Elder } 536f44246e3SAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 537c5c6b19dSSage Weil 5383d14c5d2SYehuda Sadeh BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 5393d14c5d2SYehuda Sadeh msg_size = p - msg->front.iov_base; 5403d14c5d2SYehuda Sadeh msg->front.iov_len = msg_size; 5413d14c5d2SYehuda Sadeh msg->hdr.front_len = cpu_to_le32(msg_size); 5421b83bef2SSage Weil 5431b83bef2SSage Weil dout("build_request msg_size was %d num_ops %d\n", (int)msg_size, 5441b83bef2SSage Weil num_ops); 5453d14c5d2SYehuda Sadeh return; 5463d14c5d2SYehuda Sadeh } 5473d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_build_request); 5483d14c5d2SYehuda Sadeh 5493d14c5d2SYehuda Sadeh /* 5503d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 5513d14c5d2SYehuda Sadeh * extent as needed. 5523d14c5d2SYehuda Sadeh * 5533d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 5543d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 5553d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 5563d14c5d2SYehuda Sadeh * 5573d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 5583d14c5d2SYehuda Sadeh * data quickly. 5593d14c5d2SYehuda Sadeh */ 5603d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 5613d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 5623d14c5d2SYehuda Sadeh struct ceph_vino vino, 5633d14c5d2SYehuda Sadeh u64 off, u64 *plen, 5643d14c5d2SYehuda Sadeh int opcode, int flags, 5653d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5663d14c5d2SYehuda Sadeh int do_sync, 5673d14c5d2SYehuda Sadeh u32 truncate_seq, 5683d14c5d2SYehuda Sadeh u64 truncate_size, 5693d14c5d2SYehuda Sadeh struct timespec *mtime, 570153e5167SAlex Elder bool use_mempool) 5713d14c5d2SYehuda Sadeh { 572ae7ca4a3SAlex Elder struct ceph_osd_req_op ops[2]; 5733d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 574ae7ca4a3SAlex Elder unsigned int num_op = 1; 57547a05811SAlex Elder u64 bno = 0; 5766816282dSSage Weil int r; 5773d14c5d2SYehuda Sadeh 578ae7ca4a3SAlex Elder memset(&ops, 0, sizeof ops); 579ae7ca4a3SAlex Elder 5803d14c5d2SYehuda Sadeh ops[0].op = opcode; 5813d14c5d2SYehuda Sadeh ops[0].extent.truncate_seq = truncate_seq; 5823d14c5d2SYehuda Sadeh ops[0].extent.truncate_size = truncate_size; 5833d14c5d2SYehuda Sadeh 5843d14c5d2SYehuda Sadeh if (do_sync) { 5853d14c5d2SYehuda Sadeh ops[1].op = CEPH_OSD_OP_STARTSYNC; 586ae7ca4a3SAlex Elder num_op++; 587ae7ca4a3SAlex Elder } 5883d14c5d2SYehuda Sadeh 589ae7ca4a3SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_op, use_mempool, 590ae7ca4a3SAlex Elder GFP_NOFS); 5914ad12621SSage Weil if (!req) 5926816282dSSage Weil return ERR_PTR(-ENOMEM); 593d178a9e7SAlex Elder req->r_flags = flags; 5943d14c5d2SYehuda Sadeh 5953d14c5d2SYehuda Sadeh /* calculate max write size */ 59660cf5992SAlex Elder r = calc_layout(layout, off, plen, ops, &bno); 5973ff5f385SAlex Elder if (r < 0) { 5983ff5f385SAlex Elder ceph_osdc_put_request(req); 5996816282dSSage Weil return ERR_PTR(r); 6003ff5f385SAlex Elder } 6013d14c5d2SYehuda Sadeh req->r_file_layout = *layout; /* keep a copy */ 6023d14c5d2SYehuda Sadeh 603dbe0fc41SAlex Elder snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno); 604dbe0fc41SAlex Elder req->r_oid_len = strlen(req->r_oid); 605dbe0fc41SAlex Elder 606175face2SAlex Elder ceph_osdc_build_request(req, off, num_op, ops, 607ae7ca4a3SAlex Elder snapc, vino.snap, mtime); 6083d14c5d2SYehuda Sadeh 6093d14c5d2SYehuda Sadeh return req; 6103d14c5d2SYehuda Sadeh } 6113d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 6123d14c5d2SYehuda Sadeh 6133d14c5d2SYehuda Sadeh /* 6143d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 6153d14c5d2SYehuda Sadeh */ 6163d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 6173d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 6183d14c5d2SYehuda Sadeh { 6193d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 6203d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 6213d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 6223d14c5d2SYehuda Sadeh 6233d14c5d2SYehuda Sadeh while (*p) { 6243d14c5d2SYehuda Sadeh parent = *p; 6253d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 6263d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 6273d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 6283d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 6293d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 6303d14c5d2SYehuda Sadeh else 6313d14c5d2SYehuda Sadeh BUG(); 6323d14c5d2SYehuda Sadeh } 6333d14c5d2SYehuda Sadeh 6343d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 6353d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 6363d14c5d2SYehuda Sadeh } 6373d14c5d2SYehuda Sadeh 6383d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 6393d14c5d2SYehuda Sadeh u64 tid) 6403d14c5d2SYehuda Sadeh { 6413d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 6423d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 6433d14c5d2SYehuda Sadeh 6443d14c5d2SYehuda Sadeh while (n) { 6453d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 6463d14c5d2SYehuda Sadeh if (tid < req->r_tid) 6473d14c5d2SYehuda Sadeh n = n->rb_left; 6483d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 6493d14c5d2SYehuda Sadeh n = n->rb_right; 6503d14c5d2SYehuda Sadeh else 6513d14c5d2SYehuda Sadeh return req; 6523d14c5d2SYehuda Sadeh } 6533d14c5d2SYehuda Sadeh return NULL; 6543d14c5d2SYehuda Sadeh } 6553d14c5d2SYehuda Sadeh 6563d14c5d2SYehuda Sadeh static struct ceph_osd_request * 6573d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 6583d14c5d2SYehuda Sadeh u64 tid) 6593d14c5d2SYehuda Sadeh { 6603d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 6613d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 6623d14c5d2SYehuda Sadeh 6633d14c5d2SYehuda Sadeh while (n) { 6643d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 6653d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 6663d14c5d2SYehuda Sadeh if (!n->rb_left) 6673d14c5d2SYehuda Sadeh return req; 6683d14c5d2SYehuda Sadeh n = n->rb_left; 6693d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 6703d14c5d2SYehuda Sadeh n = n->rb_right; 6713d14c5d2SYehuda Sadeh } else { 6723d14c5d2SYehuda Sadeh return req; 6733d14c5d2SYehuda Sadeh } 6743d14c5d2SYehuda Sadeh } 6753d14c5d2SYehuda Sadeh return NULL; 6763d14c5d2SYehuda Sadeh } 6773d14c5d2SYehuda Sadeh 6786f6c7006SSage Weil /* 6796f6c7006SSage Weil * Resubmit requests pending on the given osd. 6806f6c7006SSage Weil */ 6816f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 6826f6c7006SSage Weil struct ceph_osd *osd) 6836f6c7006SSage Weil { 684a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 685e02493c0SAlex Elder LIST_HEAD(resend); 6866f6c7006SSage Weil int err; 6876f6c7006SSage Weil 6886f6c7006SSage Weil dout("__kick_osd_requests osd%d\n", osd->o_osd); 6896f6c7006SSage Weil err = __reset_osd(osdc, osd); 690685a7555SAlex Elder if (err) 6916f6c7006SSage Weil return; 692e02493c0SAlex Elder /* 693e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 694e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 695e02493c0SAlex Elder * sent in tid order, and that is also the order they're 696e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 697e02493c0SAlex Elder * flight will be found first, followed by all requests that 698e02493c0SAlex Elder * have not yet been sent. And to resend requests while 699e02493c0SAlex Elder * preserving this order we will want to put any sent 700e02493c0SAlex Elder * requests back on the front of the osd client's unsent 701e02493c0SAlex Elder * list. 702e02493c0SAlex Elder * 703e02493c0SAlex Elder * So we build a separate ordered list of already-sent 704e02493c0SAlex Elder * requests for the affected osd and splice it onto the 705e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 706e02493c0SAlex Elder * request that has not yet been sent we're done. Those 707e02493c0SAlex Elder * requests are already sitting right where they belong. 708e02493c0SAlex Elder */ 7096f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 710e02493c0SAlex Elder if (!req->r_sent) 711e02493c0SAlex Elder break; 712e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 713e02493c0SAlex Elder dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, 7146f6c7006SSage Weil osd->o_osd); 715a40c4f10SYehuda Sadeh if (!req->r_linger) 7166f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 7176f6c7006SSage Weil } 718e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 719a40c4f10SYehuda Sadeh 720e02493c0SAlex Elder /* 721e02493c0SAlex Elder * Linger requests are re-registered before sending, which 722e02493c0SAlex Elder * sets up a new tid for each. We add them to the unsent 723e02493c0SAlex Elder * list at the end to keep things in tid order. 724e02493c0SAlex Elder */ 725a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 726a40c4f10SYehuda Sadeh r_linger_osd) { 72777f38e0eSSage Weil /* 72877f38e0eSSage Weil * reregister request prior to unregistering linger so 72977f38e0eSSage Weil * that r_osd is preserved. 73077f38e0eSSage Weil */ 73177f38e0eSSage Weil BUG_ON(!list_empty(&req->r_req_lru_item)); 732a40c4f10SYehuda Sadeh __register_request(osdc, req); 733e02493c0SAlex Elder list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); 734ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 73577f38e0eSSage Weil __unregister_linger_request(osdc, req); 736a40c4f10SYehuda Sadeh dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, 737a40c4f10SYehuda Sadeh osd->o_osd); 738a40c4f10SYehuda Sadeh } 7396f6c7006SSage Weil } 7406f6c7006SSage Weil 7413d14c5d2SYehuda Sadeh /* 7423d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 7433d14c5d2SYehuda Sadeh */ 7443d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 7453d14c5d2SYehuda Sadeh { 7463d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 7473d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 7483d14c5d2SYehuda Sadeh 7493d14c5d2SYehuda Sadeh if (!osd) 7503d14c5d2SYehuda Sadeh return; 7513d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 7523d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 7533d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 75483aff95eSSage Weil mutex_lock(&osdc->request_mutex); 75583aff95eSSage Weil __kick_osd_requests(osdc, osd); 756f9d25199SAlex Elder __send_queued(osdc); 75783aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 7583d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 7593d14c5d2SYehuda Sadeh } 7603d14c5d2SYehuda Sadeh 7613d14c5d2SYehuda Sadeh /* 7623d14c5d2SYehuda Sadeh * Track open sessions with osds. 7633d14c5d2SYehuda Sadeh */ 764e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 7653d14c5d2SYehuda Sadeh { 7663d14c5d2SYehuda Sadeh struct ceph_osd *osd; 7673d14c5d2SYehuda Sadeh 7683d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 7693d14c5d2SYehuda Sadeh if (!osd) 7703d14c5d2SYehuda Sadeh return NULL; 7713d14c5d2SYehuda Sadeh 7723d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 7733d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 774e10006f8SAlex Elder osd->o_osd = onum; 775f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 7763d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 777a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 7783d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 7793d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 7803d14c5d2SYehuda Sadeh 781b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 7823d14c5d2SYehuda Sadeh 7833d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 7843d14c5d2SYehuda Sadeh return osd; 7853d14c5d2SYehuda Sadeh } 7863d14c5d2SYehuda Sadeh 7873d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 7883d14c5d2SYehuda Sadeh { 7893d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 7903d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 7913d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 7923d14c5d2SYehuda Sadeh return osd; 7933d14c5d2SYehuda Sadeh } else { 7943d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 7953d14c5d2SYehuda Sadeh return NULL; 7963d14c5d2SYehuda Sadeh } 7973d14c5d2SYehuda Sadeh } 7983d14c5d2SYehuda Sadeh 7993d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 8003d14c5d2SYehuda Sadeh { 8013d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 8023d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 803a255651dSAlex Elder if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { 8043d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 8053d14c5d2SYehuda Sadeh 80627859f97SSage Weil ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); 8073d14c5d2SYehuda Sadeh kfree(osd); 8083d14c5d2SYehuda Sadeh } 8093d14c5d2SYehuda Sadeh } 8103d14c5d2SYehuda Sadeh 8113d14c5d2SYehuda Sadeh /* 8123d14c5d2SYehuda Sadeh * remove an osd from our map 8133d14c5d2SYehuda Sadeh */ 8143d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 8153d14c5d2SYehuda Sadeh { 8163d14c5d2SYehuda Sadeh dout("__remove_osd %p\n", osd); 8173d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_requests)); 8183d14c5d2SYehuda Sadeh rb_erase(&osd->o_node, &osdc->osds); 8193d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 8203d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 8213d14c5d2SYehuda Sadeh put_osd(osd); 8223d14c5d2SYehuda Sadeh } 8233d14c5d2SYehuda Sadeh 824aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 825aca420bcSSage Weil { 826048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 827aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 828aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 829aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 830aca420bcSSage Weil struct ceph_osd, o_node); 831aca420bcSSage Weil __remove_osd(osdc, osd); 832aca420bcSSage Weil } 833aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 834aca420bcSSage Weil } 835aca420bcSSage Weil 8363d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 8373d14c5d2SYehuda Sadeh struct ceph_osd *osd) 8383d14c5d2SYehuda Sadeh { 8393d14c5d2SYehuda Sadeh dout("__move_osd_to_lru %p\n", osd); 8403d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 8413d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 8423d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 8433d14c5d2SYehuda Sadeh } 8443d14c5d2SYehuda Sadeh 8453d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 8463d14c5d2SYehuda Sadeh { 8473d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 8483d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 8493d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 8503d14c5d2SYehuda Sadeh } 8513d14c5d2SYehuda Sadeh 852aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 8533d14c5d2SYehuda Sadeh { 8543d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 8553d14c5d2SYehuda Sadeh 8563d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 8573d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 8583d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 859aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 8603d14c5d2SYehuda Sadeh break; 8613d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 8623d14c5d2SYehuda Sadeh } 8633d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 8643d14c5d2SYehuda Sadeh } 8653d14c5d2SYehuda Sadeh 8663d14c5d2SYehuda Sadeh /* 8673d14c5d2SYehuda Sadeh * reset osd connect 8683d14c5d2SYehuda Sadeh */ 8693d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 8703d14c5d2SYehuda Sadeh { 871c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 8723d14c5d2SYehuda Sadeh 8733d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 874a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 875a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 8763d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 877c3acb181SAlex Elder 878c3acb181SAlex Elder return -ENODEV; 879c3acb181SAlex Elder } 880c3acb181SAlex Elder 881c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 882c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 8833d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 884c3acb181SAlex Elder struct ceph_osd_request *req; 885c3acb181SAlex Elder 8863d14c5d2SYehuda Sadeh dout(" osd addr hasn't changed and connection never opened," 8873d14c5d2SYehuda Sadeh " letting msgr retry"); 8883d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 8893d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 8903d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 891c3acb181SAlex Elder 892c3acb181SAlex Elder return -EAGAIN; 8933d14c5d2SYehuda Sadeh } 894c3acb181SAlex Elder 895c3acb181SAlex Elder ceph_con_close(&osd->o_con); 896c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 897c3acb181SAlex Elder osd->o_incarnation++; 898c3acb181SAlex Elder 899c3acb181SAlex Elder return 0; 9003d14c5d2SYehuda Sadeh } 9013d14c5d2SYehuda Sadeh 9023d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 9033d14c5d2SYehuda Sadeh { 9043d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 9053d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 9063d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 9073d14c5d2SYehuda Sadeh 908aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 9093d14c5d2SYehuda Sadeh while (*p) { 9103d14c5d2SYehuda Sadeh parent = *p; 9113d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 9123d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 9133d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 9143d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 9153d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 9163d14c5d2SYehuda Sadeh else 9173d14c5d2SYehuda Sadeh BUG(); 9183d14c5d2SYehuda Sadeh } 9193d14c5d2SYehuda Sadeh 9203d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 9213d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 9223d14c5d2SYehuda Sadeh } 9233d14c5d2SYehuda Sadeh 9243d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 9253d14c5d2SYehuda Sadeh { 9263d14c5d2SYehuda Sadeh struct ceph_osd *osd; 9273d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 9283d14c5d2SYehuda Sadeh 9293d14c5d2SYehuda Sadeh while (n) { 9303d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 9313d14c5d2SYehuda Sadeh if (o < osd->o_osd) 9323d14c5d2SYehuda Sadeh n = n->rb_left; 9333d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 9343d14c5d2SYehuda Sadeh n = n->rb_right; 9353d14c5d2SYehuda Sadeh else 9363d14c5d2SYehuda Sadeh return osd; 9373d14c5d2SYehuda Sadeh } 9383d14c5d2SYehuda Sadeh return NULL; 9393d14c5d2SYehuda Sadeh } 9403d14c5d2SYehuda Sadeh 9413d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 9423d14c5d2SYehuda Sadeh { 9433d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 9443d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 9453d14c5d2SYehuda Sadeh } 9463d14c5d2SYehuda Sadeh 9473d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 9483d14c5d2SYehuda Sadeh { 9493d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 9503d14c5d2SYehuda Sadeh } 9513d14c5d2SYehuda Sadeh 9523d14c5d2SYehuda Sadeh /* 9533d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 9543d14c5d2SYehuda Sadeh * the timeout event. 9553d14c5d2SYehuda Sadeh */ 956a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 9573d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 9583d14c5d2SYehuda Sadeh { 9593d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 9603d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 96177f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 9623d14c5d2SYehuda Sadeh __insert_request(osdc, req); 9633d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 9643d14c5d2SYehuda Sadeh osdc->num_requests++; 9653d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 9663d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 9673d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 9683d14c5d2SYehuda Sadeh } 969a40c4f10SYehuda Sadeh } 970a40c4f10SYehuda Sadeh 9713d14c5d2SYehuda Sadeh /* 9723d14c5d2SYehuda Sadeh * called under osdc->request_mutex 9733d14c5d2SYehuda Sadeh */ 9743d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 9753d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 9763d14c5d2SYehuda Sadeh { 97735f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 97835f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 97935f9f8a0SSage Weil req, req->r_tid); 98035f9f8a0SSage Weil return; 98135f9f8a0SSage Weil } 98235f9f8a0SSage Weil 9833d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 9843d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 9853d14c5d2SYehuda Sadeh osdc->num_requests--; 9863d14c5d2SYehuda Sadeh 9873d14c5d2SYehuda Sadeh if (req->r_osd) { 9883d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 9896740a845SAlex Elder ceph_msg_revoke(req->r_request); 9903d14c5d2SYehuda Sadeh 9913d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 992a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 993a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 994a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 9953d14c5d2SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 996a40c4f10SYehuda Sadeh } 997fbdb9190SSage Weil if (list_empty(&req->r_linger_item)) 9983d14c5d2SYehuda Sadeh req->r_osd = NULL; 9993d14c5d2SYehuda Sadeh } 10003d14c5d2SYehuda Sadeh 10017d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 10023d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 10033d14c5d2SYehuda Sadeh 10043d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 10053d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 10063d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 10073d14c5d2SYehuda Sadeh } 10083d14c5d2SYehuda Sadeh } 10093d14c5d2SYehuda Sadeh 10103d14c5d2SYehuda Sadeh /* 10113d14c5d2SYehuda Sadeh * Cancel a previously queued request message 10123d14c5d2SYehuda Sadeh */ 10133d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 10143d14c5d2SYehuda Sadeh { 10153d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 10166740a845SAlex Elder ceph_msg_revoke(req->r_request); 10173d14c5d2SYehuda Sadeh req->r_sent = 0; 10183d14c5d2SYehuda Sadeh } 10193d14c5d2SYehuda Sadeh } 10203d14c5d2SYehuda Sadeh 1021a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1022a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1023a40c4f10SYehuda Sadeh { 1024a40c4f10SYehuda Sadeh dout("__register_linger_request %p\n", req); 1025a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 10266194ea89SSage Weil if (req->r_osd) 10276194ea89SSage Weil list_add_tail(&req->r_linger_osd, 10286194ea89SSage Weil &req->r_osd->o_linger_requests); 1029a40c4f10SYehuda Sadeh } 1030a40c4f10SYehuda Sadeh 1031a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1032a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1033a40c4f10SYehuda Sadeh { 1034a40c4f10SYehuda Sadeh dout("__unregister_linger_request %p\n", req); 1035a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 103661c74035SAlex Elder if (req->r_osd) { 1037a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_osd); 1038a40c4f10SYehuda Sadeh 1039a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 1040a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 1041a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 1042a40c4f10SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 1043a40c4f10SYehuda Sadeh } 1044fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1045a40c4f10SYehuda Sadeh req->r_osd = NULL; 1046a40c4f10SYehuda Sadeh } 1047a40c4f10SYehuda Sadeh } 1048a40c4f10SYehuda Sadeh 1049a40c4f10SYehuda Sadeh void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, 1050a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1051a40c4f10SYehuda Sadeh { 1052a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1053a40c4f10SYehuda Sadeh if (req->r_linger) { 1054a40c4f10SYehuda Sadeh __unregister_linger_request(osdc, req); 1055a40c4f10SYehuda Sadeh ceph_osdc_put_request(req); 1056a40c4f10SYehuda Sadeh } 1057a40c4f10SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1058a40c4f10SYehuda Sadeh } 1059a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); 1060a40c4f10SYehuda Sadeh 1061a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1062a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1063a40c4f10SYehuda Sadeh { 1064a40c4f10SYehuda Sadeh if (!req->r_linger) { 1065a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1066a40c4f10SYehuda Sadeh req->r_linger = 1; 1067a40c4f10SYehuda Sadeh /* 1068a40c4f10SYehuda Sadeh * caller is now responsible for calling 1069a40c4f10SYehuda Sadeh * unregister_linger_request 1070a40c4f10SYehuda Sadeh */ 1071a40c4f10SYehuda Sadeh ceph_osdc_get_request(req); 1072a40c4f10SYehuda Sadeh } 1073a40c4f10SYehuda Sadeh } 1074a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1075a40c4f10SYehuda Sadeh 10763d14c5d2SYehuda Sadeh /* 10773d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 10783d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 107925985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 10806f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 10813d14c5d2SYehuda Sadeh * 10823d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 10833d14c5d2SYehuda Sadeh * 10843d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 10853d14c5d2SYehuda Sadeh */ 10866f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 108738d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 10883d14c5d2SYehuda Sadeh { 10895b191d99SSage Weil struct ceph_pg pgid; 10903d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 10913d14c5d2SYehuda Sadeh int o = -1, num = 0; 10923d14c5d2SYehuda Sadeh int err; 10933d14c5d2SYehuda Sadeh 10946f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 109541766f87SAlex Elder err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, 109641766f87SAlex Elder ceph_file_layout_pg_pool(req->r_file_layout)); 10976f6c7006SSage Weil if (err) { 10986f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 10993d14c5d2SYehuda Sadeh return err; 11006f6c7006SSage Weil } 11013d14c5d2SYehuda Sadeh req->r_pgid = pgid; 11023d14c5d2SYehuda Sadeh 11033d14c5d2SYehuda Sadeh err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); 11043d14c5d2SYehuda Sadeh if (err > 0) { 11053d14c5d2SYehuda Sadeh o = acting[0]; 11063d14c5d2SYehuda Sadeh num = err; 11073d14c5d2SYehuda Sadeh } 11083d14c5d2SYehuda Sadeh 110938d6453cSSage Weil if ((!force_resend && 111038d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 11113d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 11123d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 11133d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 11143d14c5d2SYehuda Sadeh (req->r_osd == NULL && o == -1)) 11153d14c5d2SYehuda Sadeh return 0; /* no change */ 11163d14c5d2SYehuda Sadeh 11175b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 11185b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 11193d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 11203d14c5d2SYehuda Sadeh 11213d14c5d2SYehuda Sadeh /* record full pg acting set */ 11223d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 11233d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 11243d14c5d2SYehuda Sadeh 11253d14c5d2SYehuda Sadeh if (req->r_osd) { 11263d14c5d2SYehuda Sadeh __cancel_request(req); 11273d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 11283d14c5d2SYehuda Sadeh req->r_osd = NULL; 11293d14c5d2SYehuda Sadeh } 11303d14c5d2SYehuda Sadeh 11313d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 11323d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 11333d14c5d2SYehuda Sadeh err = -ENOMEM; 1134e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 11356f6c7006SSage Weil if (!req->r_osd) { 11366f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 11373d14c5d2SYehuda Sadeh goto out; 11386f6c7006SSage Weil } 11393d14c5d2SYehuda Sadeh 11406f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 11413d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 11423d14c5d2SYehuda Sadeh 1143b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1144b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1145b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 11463d14c5d2SYehuda Sadeh } 11473d14c5d2SYehuda Sadeh 11483d14c5d2SYehuda Sadeh if (req->r_osd) { 11493d14c5d2SYehuda Sadeh __remove_osd_from_lru(req->r_osd); 1150ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1151ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 11526f6c7006SSage Weil } else { 1153ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 11543d14c5d2SYehuda Sadeh } 11553d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 11563d14c5d2SYehuda Sadeh 11573d14c5d2SYehuda Sadeh out: 11583d14c5d2SYehuda Sadeh return err; 11593d14c5d2SYehuda Sadeh } 11603d14c5d2SYehuda Sadeh 11613d14c5d2SYehuda Sadeh /* 11623d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 11633d14c5d2SYehuda Sadeh */ 116456e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 11653d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 11663d14c5d2SYehuda Sadeh { 11671b83bef2SSage Weil void *p; 11683d14c5d2SYehuda Sadeh 11691b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 11701b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 11711b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 11723d14c5d2SYehuda Sadeh 11731b83bef2SSage Weil /* fill in message content that changes each time we send it */ 11741b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 11751b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 11761b83bef2SSage Weil put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); 11771b83bef2SSage Weil p = req->r_request_pgid; 11781b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 11791b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 11801b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 11811b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 11821b83bef2SSage Weil sizeof(req->r_reassert_version)); 11832169aea6SSage Weil 11843d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 11853d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 11863d14c5d2SYehuda Sadeh 11873d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 11883d14c5d2SYehuda Sadeh ceph_con_send(&req->r_osd->o_con, req->r_request); 11893d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 11903d14c5d2SYehuda Sadeh } 11913d14c5d2SYehuda Sadeh 11923d14c5d2SYehuda Sadeh /* 11936f6c7006SSage Weil * Send any requests in the queue (req_unsent). 11946f6c7006SSage Weil */ 1195f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 11966f6c7006SSage Weil { 11976f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 11986f6c7006SSage Weil 1199f9d25199SAlex Elder dout("__send_queued\n"); 1200f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 12016f6c7006SSage Weil __send_request(osdc, req); 12026f6c7006SSage Weil } 12036f6c7006SSage Weil 12046f6c7006SSage Weil /* 12053d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 12063d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 12073d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 12083d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 12093d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 12103d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 12113d14c5d2SYehuda Sadeh * there are no open requests). 12123d14c5d2SYehuda Sadeh */ 12133d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 12143d14c5d2SYehuda Sadeh { 12153d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 12163d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 121783aff95eSSage Weil struct ceph_osd_request *req; 12183d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12193d14c5d2SYehuda Sadeh unsigned long keepalive = 12203d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 12213d14c5d2SYehuda Sadeh struct list_head slow_osds; 12223d14c5d2SYehuda Sadeh dout("timeout\n"); 12233d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 12243d14c5d2SYehuda Sadeh 12253d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 12263d14c5d2SYehuda Sadeh 12273d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 12283d14c5d2SYehuda Sadeh 12293d14c5d2SYehuda Sadeh /* 12303d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 12313d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 12323d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 12333d14c5d2SYehuda Sadeh */ 12343d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 12353d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 12363d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 12373d14c5d2SYehuda Sadeh break; 12383d14c5d2SYehuda Sadeh 12393d14c5d2SYehuda Sadeh osd = req->r_osd; 12403d14c5d2SYehuda Sadeh BUG_ON(!osd); 12413d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 12423d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 12433d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 12443d14c5d2SYehuda Sadeh } 12453d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 12463d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 12473d14c5d2SYehuda Sadeh o_keepalive_item); 12483d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 12493d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 12503d14c5d2SYehuda Sadeh } 12513d14c5d2SYehuda Sadeh 12523d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1253f9d25199SAlex Elder __send_queued(osdc); 12543d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 12553d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 12563d14c5d2SYehuda Sadeh } 12573d14c5d2SYehuda Sadeh 12583d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 12593d14c5d2SYehuda Sadeh { 12603d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 12613d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 12623d14c5d2SYehuda Sadeh osds_timeout_work.work); 12633d14c5d2SYehuda Sadeh unsigned long delay = 12643d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 12653d14c5d2SYehuda Sadeh 12663d14c5d2SYehuda Sadeh dout("osds timeout\n"); 12673d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1268aca420bcSSage Weil remove_old_osds(osdc); 12693d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 12703d14c5d2SYehuda Sadeh 12713d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 12723d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 12733d14c5d2SYehuda Sadeh } 12743d14c5d2SYehuda Sadeh 127525845472SSage Weil static void complete_request(struct ceph_osd_request *req) 127625845472SSage Weil { 127725845472SSage Weil if (req->r_safe_callback) 127825845472SSage Weil req->r_safe_callback(req, NULL); 127925845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 128025845472SSage Weil } 128125845472SSage Weil 12821b83bef2SSage Weil static int __decode_pgid(void **p, void *end, struct ceph_pg *pgid) 12831b83bef2SSage Weil { 12841b83bef2SSage Weil __u8 v; 12851b83bef2SSage Weil 12861b83bef2SSage Weil ceph_decode_need(p, end, 1 + 8 + 4 + 4, bad); 12871b83bef2SSage Weil v = ceph_decode_8(p); 12881b83bef2SSage Weil if (v > 1) { 12891b83bef2SSage Weil pr_warning("do not understand pg encoding %d > 1", v); 12901b83bef2SSage Weil return -EINVAL; 12911b83bef2SSage Weil } 12921b83bef2SSage Weil pgid->pool = ceph_decode_64(p); 12931b83bef2SSage Weil pgid->seed = ceph_decode_32(p); 12941b83bef2SSage Weil *p += 4; 12951b83bef2SSage Weil return 0; 12961b83bef2SSage Weil 12971b83bef2SSage Weil bad: 12981b83bef2SSage Weil pr_warning("incomplete pg encoding"); 12991b83bef2SSage Weil return -EINVAL; 13001b83bef2SSage Weil } 13011b83bef2SSage Weil 13023d14c5d2SYehuda Sadeh /* 13033d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 13043d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 13053d14c5d2SYehuda Sadeh */ 13063d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 13073d14c5d2SYehuda Sadeh struct ceph_connection *con) 13083d14c5d2SYehuda Sadeh { 13091b83bef2SSage Weil void *p, *end; 13103d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 13113d14c5d2SYehuda Sadeh u64 tid; 13121b83bef2SSage Weil int object_len; 13131b83bef2SSage Weil int numops, payload_len, flags; 13143d14c5d2SYehuda Sadeh s32 result; 13151b83bef2SSage Weil s32 retry_attempt; 13161b83bef2SSage Weil struct ceph_pg pg; 13171b83bef2SSage Weil int err; 13181b83bef2SSage Weil u32 reassert_epoch; 13191b83bef2SSage Weil u64 reassert_version; 13201b83bef2SSage Weil u32 osdmap_epoch; 13210d5af164SAlex Elder int already_completed; 13221b83bef2SSage Weil int i; 13233d14c5d2SYehuda Sadeh 13243d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 13251b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 13261b83bef2SSage Weil 13271b83bef2SSage Weil p = msg->front.iov_base; 13281b83bef2SSage Weil end = p + msg->front.iov_len; 13291b83bef2SSage Weil 13301b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 13311b83bef2SSage Weil object_len = ceph_decode_32(&p); 13321b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 13331b83bef2SSage Weil p += object_len; 13341b83bef2SSage Weil 13351b83bef2SSage Weil err = __decode_pgid(&p, end, &pg); 13361b83bef2SSage Weil if (err) 13373d14c5d2SYehuda Sadeh goto bad; 13381b83bef2SSage Weil 13391b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 13401b83bef2SSage Weil flags = ceph_decode_64(&p); 13411b83bef2SSage Weil result = ceph_decode_32(&p); 13421b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 13431b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 13441b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 13451b83bef2SSage Weil 13463d14c5d2SYehuda Sadeh /* lookup */ 13473d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 13483d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 13493d14c5d2SYehuda Sadeh if (req == NULL) { 13503d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 13513d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 13523d14c5d2SYehuda Sadeh return; 13533d14c5d2SYehuda Sadeh } 13543d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 13551b83bef2SSage Weil 13561b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 13571b83bef2SSage Weil req, result); 13581b83bef2SSage Weil 13591b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 13601b83bef2SSage Weil numops = ceph_decode_32(&p); 13611b83bef2SSage Weil if (numops > CEPH_OSD_MAX_OP) 13621b83bef2SSage Weil goto bad_put; 13631b83bef2SSage Weil if (numops != req->r_num_ops) 13641b83bef2SSage Weil goto bad_put; 13651b83bef2SSage Weil payload_len = 0; 13661b83bef2SSage Weil ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); 13671b83bef2SSage Weil for (i = 0; i < numops; i++) { 13681b83bef2SSage Weil struct ceph_osd_op *op = p; 13691b83bef2SSage Weil int len; 13701b83bef2SSage Weil 13711b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 13721b83bef2SSage Weil req->r_reply_op_len[i] = len; 13731b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 13741b83bef2SSage Weil payload_len += len; 13751b83bef2SSage Weil p += sizeof(*op); 13761b83bef2SSage Weil } 13771b83bef2SSage Weil if (payload_len != le32_to_cpu(msg->hdr.data_len)) { 13781b83bef2SSage Weil pr_warning("sum of op payload lens %d != data_len %d", 13791b83bef2SSage Weil payload_len, le32_to_cpu(msg->hdr.data_len)); 13801b83bef2SSage Weil goto bad_put; 13811b83bef2SSage Weil } 13821b83bef2SSage Weil 13831b83bef2SSage Weil ceph_decode_need(&p, end, 4 + numops * 4, bad); 13841b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 13851b83bef2SSage Weil for (i = 0; i < numops; i++) 13861b83bef2SSage Weil req->r_reply_op_result[i] = ceph_decode_32(&p); 13873d14c5d2SYehuda Sadeh 13883d14c5d2SYehuda Sadeh /* 13893d14c5d2SYehuda Sadeh * if this connection filled our message, drop our reference now, to 13903d14c5d2SYehuda Sadeh * avoid a (safe but slower) revoke later. 13913d14c5d2SYehuda Sadeh */ 13923d14c5d2SYehuda Sadeh if (req->r_con_filling_msg == con && req->r_reply == msg) { 13933d14c5d2SYehuda Sadeh dout(" dropping con_filling_msg ref %p\n", con); 13943d14c5d2SYehuda Sadeh req->r_con_filling_msg = NULL; 13950d47766fSSage Weil con->ops->put(con); 13963d14c5d2SYehuda Sadeh } 13973d14c5d2SYehuda Sadeh 13983d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 139995c96174SEric Dumazet unsigned int bytes; 14003d14c5d2SYehuda Sadeh 14011b83bef2SSage Weil req->r_result = result; 14023d14c5d2SYehuda Sadeh bytes = le32_to_cpu(msg->hdr.data_len); 14033d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 14043d14c5d2SYehuda Sadeh bytes); 14053d14c5d2SYehuda Sadeh if (req->r_result == 0) 14063d14c5d2SYehuda Sadeh req->r_result = bytes; 14073d14c5d2SYehuda Sadeh 14083d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 14091b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 14101b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 14113d14c5d2SYehuda Sadeh 14123d14c5d2SYehuda Sadeh req->r_got_reply = 1; 14133d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 14143d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 14153d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14163d14c5d2SYehuda Sadeh goto done; 14173d14c5d2SYehuda Sadeh } 14183d14c5d2SYehuda Sadeh 14193d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 14203d14c5d2SYehuda Sadeh 1421a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1422a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1423a40c4f10SYehuda Sadeh 14243d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 14253d14c5d2SYehuda Sadeh if (result < 0 || 14263d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 14273d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 14283d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 14293d14c5d2SYehuda Sadeh 14300d5af164SAlex Elder already_completed = req->r_completed; 14310d5af164SAlex Elder req->r_completed = 1; 14323d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14330d5af164SAlex Elder if (already_completed) 14340d5af164SAlex Elder goto done; 14353d14c5d2SYehuda Sadeh 14363d14c5d2SYehuda Sadeh if (req->r_callback) 14373d14c5d2SYehuda Sadeh req->r_callback(req, msg); 14383d14c5d2SYehuda Sadeh else 14393d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 14403d14c5d2SYehuda Sadeh 144125845472SSage Weil if (flags & CEPH_OSD_FLAG_ONDISK) 144225845472SSage Weil complete_request(req); 14433d14c5d2SYehuda Sadeh 14443d14c5d2SYehuda Sadeh done: 1445a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 14463d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 14473d14c5d2SYehuda Sadeh return; 14483d14c5d2SYehuda Sadeh 14491b83bef2SSage Weil bad_put: 14501b83bef2SSage Weil ceph_osdc_put_request(req); 14513d14c5d2SYehuda Sadeh bad: 14521b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 14531b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 14543d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 14553d14c5d2SYehuda Sadeh } 14563d14c5d2SYehuda Sadeh 14576f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 14583d14c5d2SYehuda Sadeh { 14593d14c5d2SYehuda Sadeh struct rb_node *p, *n; 14603d14c5d2SYehuda Sadeh 14613d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 14626f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 14633d14c5d2SYehuda Sadeh 14643d14c5d2SYehuda Sadeh n = rb_next(p); 14653d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 14663d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 14673d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 14683d14c5d2SYehuda Sadeh osd->o_osd), 14693d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 14703d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 14713d14c5d2SYehuda Sadeh } 14723d14c5d2SYehuda Sadeh } 14733d14c5d2SYehuda Sadeh 14743d14c5d2SYehuda Sadeh /* 14756f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 14766f6c7006SSage Weil * no osd, request a new map. 14773d14c5d2SYehuda Sadeh * 1478e6d50f67SAlex Elder * Caller should hold map_sem for read. 14793d14c5d2SYehuda Sadeh */ 148038d6453cSSage Weil static void kick_requests(struct ceph_osd_client *osdc, int force_resend) 14813d14c5d2SYehuda Sadeh { 1482a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 14836f6c7006SSage Weil struct rb_node *p; 14846f6c7006SSage Weil int needmap = 0; 14856f6c7006SSage Weil int err; 14863d14c5d2SYehuda Sadeh 148738d6453cSSage Weil dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); 14883d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 14896194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 14906f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 14916194ea89SSage Weil p = rb_next(p); 1492ab60b16dSAlex Elder 1493ab60b16dSAlex Elder /* 1494ab60b16dSAlex Elder * For linger requests that have not yet been 1495ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1496ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1497ab60b16dSAlex Elder * the request before re-registering it as a linger 1498ab60b16dSAlex Elder * request to ensure the __map_request() below 1499ab60b16dSAlex Elder * will decide it needs to be sent. 1500ab60b16dSAlex Elder */ 1501ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1502ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1503ab60b16dSAlex Elder req, req->r_tid, 1504ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 1505ab60b16dSAlex Elder __unregister_request(osdc, req); 1506ab60b16dSAlex Elder __register_linger_request(osdc, req); 1507ab60b16dSAlex Elder continue; 1508ab60b16dSAlex Elder } 1509ab60b16dSAlex Elder 151038d6453cSSage Weil err = __map_request(osdc, req, force_resend); 15116f6c7006SSage Weil if (err < 0) 15126f6c7006SSage Weil continue; /* error */ 15136f6c7006SSage Weil if (req->r_osd == NULL) { 15146f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 15156f6c7006SSage Weil needmap++; /* request a newer map */ 15166f6c7006SSage Weil } else if (err > 0) { 15176194ea89SSage Weil if (!req->r_linger) { 15186194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 15196194ea89SSage Weil req->r_tid, 15206f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 15216f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 15226f6c7006SSage Weil } 15236f6c7006SSage Weil } 15246194ea89SSage Weil } 1525a40c4f10SYehuda Sadeh 1526a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 1527a40c4f10SYehuda Sadeh r_linger_item) { 1528a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 1529a40c4f10SYehuda Sadeh 153038d6453cSSage Weil err = __map_request(osdc, req, force_resend); 1531ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 1532a40c4f10SYehuda Sadeh if (err == 0) 1533a40c4f10SYehuda Sadeh continue; /* no change and no osd was specified */ 1534a40c4f10SYehuda Sadeh if (err < 0) 1535a40c4f10SYehuda Sadeh continue; /* hrm! */ 1536a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 1537a40c4f10SYehuda Sadeh dout("tid %llu maps to no valid osd\n", req->r_tid); 1538a40c4f10SYehuda Sadeh needmap++; /* request a newer map */ 1539a40c4f10SYehuda Sadeh continue; 1540a40c4f10SYehuda Sadeh } 1541a40c4f10SYehuda Sadeh 1542a40c4f10SYehuda Sadeh dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, 1543a40c4f10SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 1544a40c4f10SYehuda Sadeh __register_request(osdc, req); 1545c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 1546a40c4f10SYehuda Sadeh } 15473d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 15483d14c5d2SYehuda Sadeh 15493d14c5d2SYehuda Sadeh if (needmap) { 15503d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 15513d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 15523d14c5d2SYehuda Sadeh } 1553e6d50f67SAlex Elder reset_changed_osds(osdc); 15543d14c5d2SYehuda Sadeh } 15556f6c7006SSage Weil 15566f6c7006SSage Weil 15573d14c5d2SYehuda Sadeh /* 15583d14c5d2SYehuda Sadeh * Process updated osd map. 15593d14c5d2SYehuda Sadeh * 15603d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 15613d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 15623d14c5d2SYehuda Sadeh * off to different OSDs as needed. 15633d14c5d2SYehuda Sadeh */ 15643d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 15653d14c5d2SYehuda Sadeh { 15663d14c5d2SYehuda Sadeh void *p, *end, *next; 15673d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 15683d14c5d2SYehuda Sadeh u32 epoch; 15693d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 15703d14c5d2SYehuda Sadeh int err; 15713d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 15723d14c5d2SYehuda Sadeh 15733d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 15743d14c5d2SYehuda Sadeh p = msg->front.iov_base; 15753d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 15763d14c5d2SYehuda Sadeh 15773d14c5d2SYehuda Sadeh /* verify fsid */ 15783d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 15793d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 15803d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 15813d14c5d2SYehuda Sadeh return; 15823d14c5d2SYehuda Sadeh 15833d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 15843d14c5d2SYehuda Sadeh 15853d14c5d2SYehuda Sadeh /* incremental maps */ 15863d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 15873d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 15883d14c5d2SYehuda Sadeh while (nr_maps > 0) { 15893d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 15903d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 15913d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 15923d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 15933d14c5d2SYehuda Sadeh next = p + maplen; 15943d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 15953d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 15963d14c5d2SYehuda Sadeh epoch, maplen); 15973d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 15983d14c5d2SYehuda Sadeh osdc->osdmap, 159915d9882cSAlex Elder &osdc->client->msgr); 16003d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 16013d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 16023d14c5d2SYehuda Sadeh goto bad; 16033d14c5d2SYehuda Sadeh } 16043d14c5d2SYehuda Sadeh BUG_ON(!newmap); 16053d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 16063d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 16073d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 16083d14c5d2SYehuda Sadeh } 160938d6453cSSage Weil kick_requests(osdc, 0); 16103d14c5d2SYehuda Sadeh } else { 16113d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 16123d14c5d2SYehuda Sadeh epoch, maplen); 16133d14c5d2SYehuda Sadeh } 16143d14c5d2SYehuda Sadeh p = next; 16153d14c5d2SYehuda Sadeh nr_maps--; 16163d14c5d2SYehuda Sadeh } 16173d14c5d2SYehuda Sadeh if (newmap) 16183d14c5d2SYehuda Sadeh goto done; 16193d14c5d2SYehuda Sadeh 16203d14c5d2SYehuda Sadeh /* full maps */ 16213d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 16223d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 16233d14c5d2SYehuda Sadeh while (nr_maps) { 16243d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 16253d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 16263d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 16273d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 16283d14c5d2SYehuda Sadeh if (nr_maps > 1) { 16293d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 16303d14c5d2SYehuda Sadeh epoch, maplen); 16313d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 16323d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 16333d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 16343d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 16353d14c5d2SYehuda Sadeh } else { 163638d6453cSSage Weil int skipped_map = 0; 163738d6453cSSage Weil 16383d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 16393d14c5d2SYehuda Sadeh newmap = osdmap_decode(&p, p+maplen); 16403d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 16413d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 16423d14c5d2SYehuda Sadeh goto bad; 16433d14c5d2SYehuda Sadeh } 16443d14c5d2SYehuda Sadeh BUG_ON(!newmap); 16453d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 16463d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 164738d6453cSSage Weil if (oldmap) { 164838d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 164938d6453cSSage Weil skipped_map = 1; 16503d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 165138d6453cSSage Weil } 165238d6453cSSage Weil kick_requests(osdc, skipped_map); 16533d14c5d2SYehuda Sadeh } 16543d14c5d2SYehuda Sadeh p += maplen; 16553d14c5d2SYehuda Sadeh nr_maps--; 16563d14c5d2SYehuda Sadeh } 16573d14c5d2SYehuda Sadeh 16583d14c5d2SYehuda Sadeh done: 16593d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 16603d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 1661cd634fb6SSage Weil 1662cd634fb6SSage Weil /* 1663cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 1664cd634fb6SSage Weil * we find out when we are no longer full and stop returning 1665cd634fb6SSage Weil * ENOSPC. 1666cd634fb6SSage Weil */ 1667cd634fb6SSage Weil if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) 1668cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 1669cd634fb6SSage Weil 1670f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 1671f9d25199SAlex Elder __send_queued(osdc); 1672f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 16733d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16743d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 16753d14c5d2SYehuda Sadeh return; 16763d14c5d2SYehuda Sadeh 16773d14c5d2SYehuda Sadeh bad: 16783d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 16793d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 16803d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 16813d14c5d2SYehuda Sadeh return; 16823d14c5d2SYehuda Sadeh } 16833d14c5d2SYehuda Sadeh 16843d14c5d2SYehuda Sadeh /* 1685a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 1686a40c4f10SYehuda Sadeh * 1687a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 1688a40c4f10SYehuda Sadeh */ 1689a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 1690a40c4f10SYehuda Sadeh { 1691a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 1692a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 1693a40c4f10SYehuda Sadeh 1694a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 1695a40c4f10SYehuda Sadeh kfree(event); 1696a40c4f10SYehuda Sadeh } 1697a40c4f10SYehuda Sadeh 1698a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 1699a40c4f10SYehuda Sadeh { 1700a40c4f10SYehuda Sadeh kref_get(&event->kref); 1701a40c4f10SYehuda Sadeh } 1702a40c4f10SYehuda Sadeh 1703a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 1704a40c4f10SYehuda Sadeh { 1705a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 1706a40c4f10SYehuda Sadeh } 1707a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 1708a40c4f10SYehuda Sadeh 1709a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 1710a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 1711a40c4f10SYehuda Sadeh { 1712a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1713a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1714a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1715a40c4f10SYehuda Sadeh 1716a40c4f10SYehuda Sadeh while (*p) { 1717a40c4f10SYehuda Sadeh parent = *p; 1718a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1719a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 1720a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1721a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 1722a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1723a40c4f10SYehuda Sadeh else 1724a40c4f10SYehuda Sadeh BUG(); 1725a40c4f10SYehuda Sadeh } 1726a40c4f10SYehuda Sadeh 1727a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 1728a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 1729a40c4f10SYehuda Sadeh } 1730a40c4f10SYehuda Sadeh 1731a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 1732a40c4f10SYehuda Sadeh u64 cookie) 1733a40c4f10SYehuda Sadeh { 1734a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1735a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1736a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1737a40c4f10SYehuda Sadeh 1738a40c4f10SYehuda Sadeh while (*p) { 1739a40c4f10SYehuda Sadeh parent = *p; 1740a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1741a40c4f10SYehuda Sadeh if (cookie < event->cookie) 1742a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1743a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 1744a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1745a40c4f10SYehuda Sadeh else 1746a40c4f10SYehuda Sadeh return event; 1747a40c4f10SYehuda Sadeh } 1748a40c4f10SYehuda Sadeh return NULL; 1749a40c4f10SYehuda Sadeh } 1750a40c4f10SYehuda Sadeh 1751a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 1752a40c4f10SYehuda Sadeh { 1753a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1754a40c4f10SYehuda Sadeh 1755a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 1756a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 1757a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 1758a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1759a40c4f10SYehuda Sadeh } else { 1760a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 1761a40c4f10SYehuda Sadeh } 1762a40c4f10SYehuda Sadeh } 1763a40c4f10SYehuda Sadeh 1764a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 1765a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 17663c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 1767a40c4f10SYehuda Sadeh { 1768a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1769a40c4f10SYehuda Sadeh 1770a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 1771a40c4f10SYehuda Sadeh if (!event) 1772a40c4f10SYehuda Sadeh return -ENOMEM; 1773a40c4f10SYehuda Sadeh 1774a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 1775a40c4f10SYehuda Sadeh event->cb = event_cb; 17763c663bbdSAlex Elder event->one_shot = 0; 1777a40c4f10SYehuda Sadeh event->data = data; 1778a40c4f10SYehuda Sadeh event->osdc = osdc; 1779a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 17803ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 1781a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 1782a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 1783a40c4f10SYehuda Sadeh 1784a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1785a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 1786a40c4f10SYehuda Sadeh __insert_event(osdc, event); 1787a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1788a40c4f10SYehuda Sadeh 1789a40c4f10SYehuda Sadeh *pevent = event; 1790a40c4f10SYehuda Sadeh return 0; 1791a40c4f10SYehuda Sadeh } 1792a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 1793a40c4f10SYehuda Sadeh 1794a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 1795a40c4f10SYehuda Sadeh { 1796a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1797a40c4f10SYehuda Sadeh 1798a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 1799a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1800a40c4f10SYehuda Sadeh __remove_event(event); 1801a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1802a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 1803a40c4f10SYehuda Sadeh } 1804a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 1805a40c4f10SYehuda Sadeh 1806a40c4f10SYehuda Sadeh 1807a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 1808a40c4f10SYehuda Sadeh { 1809a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 1810a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 1811a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 1812a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 1813a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 1814a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 1815a40c4f10SYehuda Sadeh 1816a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 1817a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 1818a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 1819a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1820a40c4f10SYehuda Sadeh kfree(event_work); 1821a40c4f10SYehuda Sadeh } 1822a40c4f10SYehuda Sadeh 1823a40c4f10SYehuda Sadeh 1824a40c4f10SYehuda Sadeh /* 1825a40c4f10SYehuda Sadeh * Process osd watch notifications 1826a40c4f10SYehuda Sadeh */ 18273c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 18283c663bbdSAlex Elder struct ceph_msg *msg) 1829a40c4f10SYehuda Sadeh { 1830a40c4f10SYehuda Sadeh void *p, *end; 1831a40c4f10SYehuda Sadeh u8 proto_ver; 1832a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 1833a40c4f10SYehuda Sadeh u8 opcode; 1834a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1835a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 1836a40c4f10SYehuda Sadeh 1837a40c4f10SYehuda Sadeh p = msg->front.iov_base; 1838a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 1839a40c4f10SYehuda Sadeh 1840a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 1841a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 1842a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 1843a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 1844a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 1845a40c4f10SYehuda Sadeh 1846a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1847a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 1848a40c4f10SYehuda Sadeh if (event) { 18493c663bbdSAlex Elder BUG_ON(event->one_shot); 1850a40c4f10SYehuda Sadeh get_event(event); 1851a40c4f10SYehuda Sadeh } 1852a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1853a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 1854a40c4f10SYehuda Sadeh cookie, ver, event); 1855a40c4f10SYehuda Sadeh if (event) { 1856a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 1857a40c4f10SYehuda Sadeh if (!event_work) { 1858a40c4f10SYehuda Sadeh dout("ERROR: could not allocate event_work\n"); 1859a40c4f10SYehuda Sadeh goto done_err; 1860a40c4f10SYehuda Sadeh } 18616b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 1862a40c4f10SYehuda Sadeh event_work->event = event; 1863a40c4f10SYehuda Sadeh event_work->ver = ver; 1864a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 1865a40c4f10SYehuda Sadeh event_work->opcode = opcode; 1866a40c4f10SYehuda Sadeh if (!queue_work(osdc->notify_wq, &event_work->work)) { 1867a40c4f10SYehuda Sadeh dout("WARNING: failed to queue notify event work\n"); 1868a40c4f10SYehuda Sadeh goto done_err; 1869a40c4f10SYehuda Sadeh } 1870a40c4f10SYehuda Sadeh } 1871a40c4f10SYehuda Sadeh 1872a40c4f10SYehuda Sadeh return; 1873a40c4f10SYehuda Sadeh 1874a40c4f10SYehuda Sadeh done_err: 1875a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1876a40c4f10SYehuda Sadeh return; 1877a40c4f10SYehuda Sadeh 1878a40c4f10SYehuda Sadeh bad: 1879a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 1880a40c4f10SYehuda Sadeh return; 1881a40c4f10SYehuda Sadeh } 1882a40c4f10SYehuda Sadeh 188370636773SAlex Elder static void ceph_osdc_msg_data_set(struct ceph_msg *msg, 188470636773SAlex Elder struct ceph_osd_data *osd_data) 188570636773SAlex Elder { 188670636773SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 188770636773SAlex Elder BUG_ON(osd_data->length > (u64) SIZE_MAX); 188870636773SAlex Elder if (osd_data->length) 188970636773SAlex Elder ceph_msg_data_set_pages(msg, osd_data->pages, 189070636773SAlex Elder osd_data->length, osd_data->alignment); 18919a5e6d09SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 18929a5e6d09SAlex Elder BUG_ON(!osd_data->pagelist->length); 18939a5e6d09SAlex Elder ceph_msg_data_set_pagelist(msg, osd_data->pagelist); 189470636773SAlex Elder #ifdef CONFIG_BLOCK 189570636773SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 189670636773SAlex Elder ceph_msg_data_set_bio(msg, osd_data->bio); 189770636773SAlex Elder #endif 189870636773SAlex Elder } else { 189970636773SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 190070636773SAlex Elder } 190170636773SAlex Elder } 190270636773SAlex Elder 1903a40c4f10SYehuda Sadeh /* 19043d14c5d2SYehuda Sadeh * Register request, send initial attempt. 19053d14c5d2SYehuda Sadeh */ 19063d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 19073d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 19083d14c5d2SYehuda Sadeh bool nofail) 19093d14c5d2SYehuda Sadeh { 19103d14c5d2SYehuda Sadeh int rc = 0; 19113d14c5d2SYehuda Sadeh 191270636773SAlex Elder /* Set up response incoming data and request outgoing data fields */ 19130fff87ecSAlex Elder 191470636773SAlex Elder ceph_osdc_msg_data_set(req->r_reply, &req->r_data_in); 191570636773SAlex Elder ceph_osdc_msg_data_set(req->r_request, &req->r_data_out); 19163d14c5d2SYehuda Sadeh 19173d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 19183d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1919dc4b870cSAlex Elder __register_request(osdc, req); 192092451b49SAlex Elder WARN_ON(req->r_sent); 192138d6453cSSage Weil rc = __map_request(osdc, req, 0); 19229d6fcb08SSage Weil if (rc < 0) { 19239d6fcb08SSage Weil if (nofail) { 19249d6fcb08SSage Weil dout("osdc_start_request failed map, " 19259d6fcb08SSage Weil " will retry %lld\n", req->r_tid); 19269d6fcb08SSage Weil rc = 0; 19279d6fcb08SSage Weil } 1928234af26fSDan Carpenter goto out_unlock; 19299d6fcb08SSage Weil } 19306f6c7006SSage Weil if (req->r_osd == NULL) { 19316f6c7006SSage Weil dout("send_request %p no up osds in pg\n", req); 19326f6c7006SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 19336f6c7006SSage Weil } else { 19347e2766a1SAlex Elder __send_queued(osdc); 193556e925b6SSage Weil } 19363d14c5d2SYehuda Sadeh rc = 0; 1937234af26fSDan Carpenter out_unlock: 19383d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19393d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 19403d14c5d2SYehuda Sadeh return rc; 19413d14c5d2SYehuda Sadeh } 19423d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 19433d14c5d2SYehuda Sadeh 19443d14c5d2SYehuda Sadeh /* 19453d14c5d2SYehuda Sadeh * wait for a request to complete 19463d14c5d2SYehuda Sadeh */ 19473d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 19483d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 19493d14c5d2SYehuda Sadeh { 19503d14c5d2SYehuda Sadeh int rc; 19513d14c5d2SYehuda Sadeh 19523d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 19533d14c5d2SYehuda Sadeh if (rc < 0) { 19543d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19553d14c5d2SYehuda Sadeh __cancel_request(req); 19563d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 19573d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 195825845472SSage Weil complete_request(req); 19593d14c5d2SYehuda Sadeh dout("wait_request tid %llu canceled/timed out\n", req->r_tid); 19603d14c5d2SYehuda Sadeh return rc; 19613d14c5d2SYehuda Sadeh } 19623d14c5d2SYehuda Sadeh 19633d14c5d2SYehuda Sadeh dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); 19643d14c5d2SYehuda Sadeh return req->r_result; 19653d14c5d2SYehuda Sadeh } 19663d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 19673d14c5d2SYehuda Sadeh 19683d14c5d2SYehuda Sadeh /* 19693d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 19703d14c5d2SYehuda Sadeh */ 19713d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 19723d14c5d2SYehuda Sadeh { 19733d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 19743d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 19753d14c5d2SYehuda Sadeh 19763d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19773d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 19783d14c5d2SYehuda Sadeh while (1) { 19793d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 19803d14c5d2SYehuda Sadeh if (!req) 19813d14c5d2SYehuda Sadeh break; 19823d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 19833d14c5d2SYehuda Sadeh break; 19843d14c5d2SYehuda Sadeh 19853d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 19863d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 19873d14c5d2SYehuda Sadeh continue; 19883d14c5d2SYehuda Sadeh 19893d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 19903d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19913d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 19923d14c5d2SYehuda Sadeh req->r_tid, last_tid); 19933d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 19943d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19953d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 19963d14c5d2SYehuda Sadeh } 19973d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19983d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 19993d14c5d2SYehuda Sadeh } 20003d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 20013d14c5d2SYehuda Sadeh 20023d14c5d2SYehuda Sadeh /* 20033d14c5d2SYehuda Sadeh * init, shutdown 20043d14c5d2SYehuda Sadeh */ 20053d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 20063d14c5d2SYehuda Sadeh { 20073d14c5d2SYehuda Sadeh int err; 20083d14c5d2SYehuda Sadeh 20093d14c5d2SYehuda Sadeh dout("init\n"); 20103d14c5d2SYehuda Sadeh osdc->client = client; 20113d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 20123d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 20133d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 20143d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 20153d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 20163d14c5d2SYehuda Sadeh osdc->last_tid = 0; 20173d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 20183d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 20193d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 20203d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 20216f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 20226f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2023a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 20243d14c5d2SYehuda Sadeh osdc->num_requests = 0; 20253d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 20263d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2027a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2028a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2029a40c4f10SYehuda Sadeh osdc->event_count = 0; 20303d14c5d2SYehuda Sadeh 20313d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 20323d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 20333d14c5d2SYehuda Sadeh 20343d14c5d2SYehuda Sadeh err = -ENOMEM; 20353d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 20363d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 20373d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 20383d14c5d2SYehuda Sadeh goto out; 20393d14c5d2SYehuda Sadeh 2040d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2041d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 20423d14c5d2SYehuda Sadeh "osd_op"); 20433d14c5d2SYehuda Sadeh if (err < 0) 20443d14c5d2SYehuda Sadeh goto out_mempool; 2045d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 20463d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 20473d14c5d2SYehuda Sadeh "osd_op_reply"); 20483d14c5d2SYehuda Sadeh if (err < 0) 20493d14c5d2SYehuda Sadeh goto out_msgpool; 2050a40c4f10SYehuda Sadeh 2051a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2052a40c4f10SYehuda Sadeh if (IS_ERR(osdc->notify_wq)) { 2053a40c4f10SYehuda Sadeh err = PTR_ERR(osdc->notify_wq); 2054a40c4f10SYehuda Sadeh osdc->notify_wq = NULL; 2055a40c4f10SYehuda Sadeh goto out_msgpool; 2056a40c4f10SYehuda Sadeh } 20573d14c5d2SYehuda Sadeh return 0; 20583d14c5d2SYehuda Sadeh 20593d14c5d2SYehuda Sadeh out_msgpool: 20603d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 20613d14c5d2SYehuda Sadeh out_mempool: 20623d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 20633d14c5d2SYehuda Sadeh out: 20643d14c5d2SYehuda Sadeh return err; 20653d14c5d2SYehuda Sadeh } 20663d14c5d2SYehuda Sadeh 20673d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 20683d14c5d2SYehuda Sadeh { 2069a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2070a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 20713d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 20723d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 20733d14c5d2SYehuda Sadeh if (osdc->osdmap) { 20743d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 20753d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 20763d14c5d2SYehuda Sadeh } 2077aca420bcSSage Weil remove_all_osds(osdc); 20783d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 20793d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 20803d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 20813d14c5d2SYehuda Sadeh } 20823d14c5d2SYehuda Sadeh 20833d14c5d2SYehuda Sadeh /* 20843d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 20853d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 20863d14c5d2SYehuda Sadeh */ 20873d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 20883d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 20893d14c5d2SYehuda Sadeh u64 off, u64 *plen, 20903d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2091b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 20923d14c5d2SYehuda Sadeh { 20933d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 20940fff87ecSAlex Elder struct ceph_osd_data *osd_data; 20953d14c5d2SYehuda Sadeh int rc = 0; 20963d14c5d2SYehuda Sadeh 20973d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 20983d14c5d2SYehuda Sadeh vino.snap, off, *plen); 20993d14c5d2SYehuda Sadeh req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 21003d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 21013d14c5d2SYehuda Sadeh NULL, 0, truncate_seq, truncate_size, NULL, 2102153e5167SAlex Elder false); 21036816282dSSage Weil if (IS_ERR(req)) 21046816282dSSage Weil return PTR_ERR(req); 21053d14c5d2SYehuda Sadeh 21063d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 21070fff87ecSAlex Elder 21080fff87ecSAlex Elder osd_data = &req->r_data_in; 21090fff87ecSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 21100fff87ecSAlex Elder osd_data->pages = pages; 2111e0c59487SAlex Elder osd_data->length = *plen; 21120fff87ecSAlex Elder osd_data->alignment = page_align; 21133d14c5d2SYehuda Sadeh 2114e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 2115e0c59487SAlex Elder off, *plen, osd_data->length, page_align); 21163d14c5d2SYehuda Sadeh 21173d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 21183d14c5d2SYehuda Sadeh if (!rc) 21193d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 21203d14c5d2SYehuda Sadeh 21213d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 21223d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 21233d14c5d2SYehuda Sadeh return rc; 21243d14c5d2SYehuda Sadeh } 21253d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 21263d14c5d2SYehuda Sadeh 21273d14c5d2SYehuda Sadeh /* 21283d14c5d2SYehuda Sadeh * do a synchronous write on N pages 21293d14c5d2SYehuda Sadeh */ 21303d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 21313d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 21323d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 21333d14c5d2SYehuda Sadeh u64 off, u64 len, 21343d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 21353d14c5d2SYehuda Sadeh struct timespec *mtime, 213624808826SAlex Elder struct page **pages, int num_pages) 21373d14c5d2SYehuda Sadeh { 21383d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 21390fff87ecSAlex Elder struct ceph_osd_data *osd_data; 21403d14c5d2SYehuda Sadeh int rc = 0; 2141b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 21423d14c5d2SYehuda Sadeh 21433d14c5d2SYehuda Sadeh BUG_ON(vino.snap != CEPH_NOSNAP); 21443d14c5d2SYehuda Sadeh req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 21453d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 214624808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2147fbf8685fSAlex Elder snapc, 0, 21483d14c5d2SYehuda Sadeh truncate_seq, truncate_size, mtime, 2149153e5167SAlex Elder true); 21506816282dSSage Weil if (IS_ERR(req)) 21516816282dSSage Weil return PTR_ERR(req); 21523d14c5d2SYehuda Sadeh 21533d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 21540fff87ecSAlex Elder osd_data = &req->r_data_out; 21550fff87ecSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 21560fff87ecSAlex Elder osd_data->pages = pages; 2157e0c59487SAlex Elder osd_data->length = len; 21580fff87ecSAlex Elder osd_data->alignment = page_align; 2159e0c59487SAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, osd_data->length); 21603d14c5d2SYehuda Sadeh 216187f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 21623d14c5d2SYehuda Sadeh if (!rc) 21633d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 21643d14c5d2SYehuda Sadeh 21653d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 21663d14c5d2SYehuda Sadeh if (rc == 0) 21673d14c5d2SYehuda Sadeh rc = len; 21683d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 21693d14c5d2SYehuda Sadeh return rc; 21703d14c5d2SYehuda Sadeh } 21713d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 21723d14c5d2SYehuda Sadeh 21733d14c5d2SYehuda Sadeh /* 21743d14c5d2SYehuda Sadeh * handle incoming message 21753d14c5d2SYehuda Sadeh */ 21763d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 21773d14c5d2SYehuda Sadeh { 21783d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 21793d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 21803d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 21813d14c5d2SYehuda Sadeh 21823d14c5d2SYehuda Sadeh if (!osd) 21833d14c5d2SYehuda Sadeh goto out; 21843d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 21853d14c5d2SYehuda Sadeh 21863d14c5d2SYehuda Sadeh switch (type) { 21873d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 21883d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 21893d14c5d2SYehuda Sadeh break; 21903d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 21913d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 21923d14c5d2SYehuda Sadeh break; 2193a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2194a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2195a40c4f10SYehuda Sadeh break; 21963d14c5d2SYehuda Sadeh 21973d14c5d2SYehuda Sadeh default: 21983d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 21993d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 22003d14c5d2SYehuda Sadeh } 22013d14c5d2SYehuda Sadeh out: 22023d14c5d2SYehuda Sadeh ceph_msg_put(msg); 22033d14c5d2SYehuda Sadeh } 22043d14c5d2SYehuda Sadeh 22053d14c5d2SYehuda Sadeh /* 22063d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 22073d14c5d2SYehuda Sadeh * pages. 22083d14c5d2SYehuda Sadeh */ 22093d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 22103d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 22113d14c5d2SYehuda Sadeh int *skip) 22123d14c5d2SYehuda Sadeh { 22133d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22143d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 22153d14c5d2SYehuda Sadeh struct ceph_msg *m; 22163d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 22173d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 22183d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 22193d14c5d2SYehuda Sadeh u64 tid; 22203d14c5d2SYehuda Sadeh 22213d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 22223d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 22233d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 22243d14c5d2SYehuda Sadeh if (!req) { 22253d14c5d2SYehuda Sadeh *skip = 1; 22263d14c5d2SYehuda Sadeh m = NULL; 2227756a16a5SSage Weil dout("get_reply unknown tid %llu from osd%d\n", tid, 22283d14c5d2SYehuda Sadeh osd->o_osd); 22293d14c5d2SYehuda Sadeh goto out; 22303d14c5d2SYehuda Sadeh } 22313d14c5d2SYehuda Sadeh 22323d14c5d2SYehuda Sadeh if (req->r_con_filling_msg) { 22338921d114SAlex Elder dout("%s revoking msg %p from old con %p\n", __func__, 22343d14c5d2SYehuda Sadeh req->r_reply, req->r_con_filling_msg); 22358921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 22360d47766fSSage Weil req->r_con_filling_msg->ops->put(req->r_con_filling_msg); 22373d14c5d2SYehuda Sadeh req->r_con_filling_msg = NULL; 22383d14c5d2SYehuda Sadeh } 22393d14c5d2SYehuda Sadeh 22403d14c5d2SYehuda Sadeh if (front > req->r_reply->front.iov_len) { 22413d14c5d2SYehuda Sadeh pr_warning("get_reply front %d > preallocated %d\n", 22423d14c5d2SYehuda Sadeh front, (int)req->r_reply->front.iov_len); 2243b61c2763SSage Weil m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); 22443d14c5d2SYehuda Sadeh if (!m) 22453d14c5d2SYehuda Sadeh goto out; 22463d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 22473d14c5d2SYehuda Sadeh req->r_reply = m; 22483d14c5d2SYehuda Sadeh } 22493d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 22503d14c5d2SYehuda Sadeh 22513d14c5d2SYehuda Sadeh if (data_len > 0) { 22520fff87ecSAlex Elder struct ceph_osd_data *osd_data = &req->r_data_in; 22530fff87ecSAlex Elder 22540fff87ecSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 22550fff87ecSAlex Elder if (osd_data->pages && 2256e0c59487SAlex Elder unlikely(osd_data->length < data_len)) { 22572ac2b7a6SAlex Elder 2258e0c59487SAlex Elder pr_warning("tid %lld reply has %d bytes " 2259e0c59487SAlex Elder "we had only %llu bytes ready\n", 2260e0c59487SAlex Elder tid, data_len, osd_data->length); 22613d14c5d2SYehuda Sadeh *skip = 1; 22623d14c5d2SYehuda Sadeh ceph_msg_put(m); 22633d14c5d2SYehuda Sadeh m = NULL; 22643d14c5d2SYehuda Sadeh goto out; 22653d14c5d2SYehuda Sadeh } 22663d14c5d2SYehuda Sadeh } 22672ac2b7a6SAlex Elder } 22683d14c5d2SYehuda Sadeh *skip = 0; 22690d47766fSSage Weil req->r_con_filling_msg = con->ops->get(con); 22703d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 22713d14c5d2SYehuda Sadeh 22723d14c5d2SYehuda Sadeh out: 22733d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 22743d14c5d2SYehuda Sadeh return m; 22753d14c5d2SYehuda Sadeh 22763d14c5d2SYehuda Sadeh } 22773d14c5d2SYehuda Sadeh 22783d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 22793d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 22803d14c5d2SYehuda Sadeh int *skip) 22813d14c5d2SYehuda Sadeh { 22823d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22833d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 22843d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 22853d14c5d2SYehuda Sadeh 22861c20f2d2SAlex Elder *skip = 0; 22873d14c5d2SYehuda Sadeh switch (type) { 22883d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2289a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2290b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 22913d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 22923d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 22933d14c5d2SYehuda Sadeh default: 22943d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 22953d14c5d2SYehuda Sadeh osd->o_osd); 22963d14c5d2SYehuda Sadeh *skip = 1; 22973d14c5d2SYehuda Sadeh return NULL; 22983d14c5d2SYehuda Sadeh } 22993d14c5d2SYehuda Sadeh } 23003d14c5d2SYehuda Sadeh 23013d14c5d2SYehuda Sadeh /* 23023d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 23033d14c5d2SYehuda Sadeh */ 23043d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 23053d14c5d2SYehuda Sadeh { 23063d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 23073d14c5d2SYehuda Sadeh if (get_osd(osd)) 23083d14c5d2SYehuda Sadeh return con; 23093d14c5d2SYehuda Sadeh return NULL; 23103d14c5d2SYehuda Sadeh } 23113d14c5d2SYehuda Sadeh 23123d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 23133d14c5d2SYehuda Sadeh { 23143d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 23153d14c5d2SYehuda Sadeh put_osd(osd); 23163d14c5d2SYehuda Sadeh } 23173d14c5d2SYehuda Sadeh 23183d14c5d2SYehuda Sadeh /* 23193d14c5d2SYehuda Sadeh * authentication 23203d14c5d2SYehuda Sadeh */ 2321a3530df3SAlex Elder /* 2322a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2323a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2324a3530df3SAlex Elder */ 2325a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 23268f43fb53SAlex Elder int *proto, int force_new) 23273d14c5d2SYehuda Sadeh { 23283d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23293d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23303d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 233174f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 23323d14c5d2SYehuda Sadeh 233374f1869fSAlex Elder if (force_new && auth->authorizer) { 233427859f97SSage Weil ceph_auth_destroy_authorizer(ac, auth->authorizer); 233574f1869fSAlex Elder auth->authorizer = NULL; 23363d14c5d2SYehuda Sadeh } 233727859f97SSage Weil if (!auth->authorizer) { 233827859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2339a3530df3SAlex Elder auth); 23403d14c5d2SYehuda Sadeh if (ret) 2341a3530df3SAlex Elder return ERR_PTR(ret); 234227859f97SSage Weil } else { 234327859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 23440bed9b5cSSage Weil auth); 23450bed9b5cSSage Weil if (ret) 23460bed9b5cSSage Weil return ERR_PTR(ret); 23473d14c5d2SYehuda Sadeh } 23483d14c5d2SYehuda Sadeh *proto = ac->protocol; 234974f1869fSAlex Elder 2350a3530df3SAlex Elder return auth; 23513d14c5d2SYehuda Sadeh } 23523d14c5d2SYehuda Sadeh 23533d14c5d2SYehuda Sadeh 23543d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 23553d14c5d2SYehuda Sadeh { 23563d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23573d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23583d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 23593d14c5d2SYehuda Sadeh 236027859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 23613d14c5d2SYehuda Sadeh } 23623d14c5d2SYehuda Sadeh 23633d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 23643d14c5d2SYehuda Sadeh { 23653d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23663d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23673d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 23683d14c5d2SYehuda Sadeh 236927859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 23703d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 23713d14c5d2SYehuda Sadeh } 23723d14c5d2SYehuda Sadeh 23733d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 23743d14c5d2SYehuda Sadeh .get = get_osd_con, 23753d14c5d2SYehuda Sadeh .put = put_osd_con, 23763d14c5d2SYehuda Sadeh .dispatch = dispatch, 23773d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 23783d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 23793d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 23803d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 23813d14c5d2SYehuda Sadeh .fault = osd_reset, 23823d14c5d2SYehuda Sadeh }; 2383