13d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 23d14c5d2SYehuda Sadeh 33d14c5d2SYehuda Sadeh #include <linux/module.h> 43d14c5d2SYehuda Sadeh #include <linux/err.h> 53d14c5d2SYehuda Sadeh #include <linux/highmem.h> 63d14c5d2SYehuda Sadeh #include <linux/mm.h> 73d14c5d2SYehuda Sadeh #include <linux/pagemap.h> 83d14c5d2SYehuda Sadeh #include <linux/slab.h> 93d14c5d2SYehuda Sadeh #include <linux/uaccess.h> 103d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 113d14c5d2SYehuda Sadeh #include <linux/bio.h> 123d14c5d2SYehuda Sadeh #endif 133d14c5d2SYehuda Sadeh 143d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 153d14c5d2SYehuda Sadeh #include <linux/ceph/osd_client.h> 163d14c5d2SYehuda Sadeh #include <linux/ceph/messenger.h> 173d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 183d14c5d2SYehuda Sadeh #include <linux/ceph/auth.h> 193d14c5d2SYehuda Sadeh #include <linux/ceph/pagelist.h> 203d14c5d2SYehuda Sadeh 213d14c5d2SYehuda Sadeh #define OSD_OP_FRONT_LEN 4096 223d14c5d2SYehuda Sadeh #define OSD_OPREPLY_FRONT_LEN 512 233d14c5d2SYehuda Sadeh 243d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops; 253d14c5d2SYehuda Sadeh 26f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc); 276f6c7006SSage Weil static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); 28a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 29a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 30a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 31a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 3256e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 33a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 343d14c5d2SYehuda Sadeh 353d14c5d2SYehuda Sadeh /* 363d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 373d14c5d2SYehuda Sadeh * 383d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 393d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 403d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 413d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 423d14c5d2SYehuda Sadeh * access to storage. 433d14c5d2SYehuda Sadeh * 443d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 453d14c5d2SYehuda Sadeh * are described by the osd map. 463d14c5d2SYehuda Sadeh * 473d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 483d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 493d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 503d14c5d2SYehuda Sadeh * channel with an OSD is reset. 513d14c5d2SYehuda Sadeh */ 523d14c5d2SYehuda Sadeh 533d14c5d2SYehuda Sadeh /* 543d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 553d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 563d14c5d2SYehuda Sadeh * object boundary. 573d14c5d2SYehuda Sadeh * 583d14c5d2SYehuda Sadeh * fill osd op in request message. 593d14c5d2SYehuda Sadeh */ 60dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 61a19dadfbSAlex Elder u64 *objnum, u64 *objoff, u64 *objlen) 623d14c5d2SYehuda Sadeh { 6360e56f13SAlex Elder u64 orig_len = *plen; 64d63b77f4SSage Weil int r; 653d14c5d2SYehuda Sadeh 6660e56f13SAlex Elder /* object extent? */ 6775d1c941SAlex Elder r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, 6875d1c941SAlex Elder objoff, objlen); 69d63b77f4SSage Weil if (r < 0) 70d63b77f4SSage Weil return r; 7175d1c941SAlex Elder if (*objlen < orig_len) { 7275d1c941SAlex Elder *plen = *objlen; 7360e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 7460e56f13SAlex Elder orig_len - *plen, off, *plen); 7560e56f13SAlex Elder } 7660e56f13SAlex Elder 7775d1c941SAlex Elder dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); 783d14c5d2SYehuda Sadeh 793ff5f385SAlex Elder return 0; 803d14c5d2SYehuda Sadeh } 813d14c5d2SYehuda Sadeh 823d14c5d2SYehuda Sadeh /* 833d14c5d2SYehuda Sadeh * requests 843d14c5d2SYehuda Sadeh */ 853d14c5d2SYehuda Sadeh void ceph_osdc_release_request(struct kref *kref) 863d14c5d2SYehuda Sadeh { 87e0c59487SAlex Elder int num_pages; 883d14c5d2SYehuda Sadeh struct ceph_osd_request *req = container_of(kref, 893d14c5d2SYehuda Sadeh struct ceph_osd_request, 903d14c5d2SYehuda Sadeh r_kref); 913d14c5d2SYehuda Sadeh 923d14c5d2SYehuda Sadeh if (req->r_request) 933d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 94ace6d3a9SAlex Elder if (req->r_reply) { 958921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 96ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 97ace6d3a9SAlex Elder } 980fff87ecSAlex Elder 990fff87ecSAlex Elder if (req->r_data_in.type == CEPH_OSD_DATA_TYPE_PAGES && 100e0c59487SAlex Elder req->r_data_in.own_pages) { 101e0c59487SAlex Elder num_pages = calc_pages_for((u64)req->r_data_in.alignment, 102e0c59487SAlex Elder (u64)req->r_data_in.length); 103e0c59487SAlex Elder ceph_release_page_vector(req->r_data_in.pages, num_pages); 104e0c59487SAlex Elder } 1050fff87ecSAlex Elder if (req->r_data_out.type == CEPH_OSD_DATA_TYPE_PAGES && 106e0c59487SAlex Elder req->r_data_out.own_pages) { 107e0c59487SAlex Elder num_pages = calc_pages_for((u64)req->r_data_out.alignment, 108e0c59487SAlex Elder (u64)req->r_data_out.length); 109e0c59487SAlex Elder ceph_release_page_vector(req->r_data_out.pages, num_pages); 110e0c59487SAlex Elder } 1110fff87ecSAlex Elder 1123d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 1133d14c5d2SYehuda Sadeh if (req->r_mempool) 1143d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 1153d14c5d2SYehuda Sadeh else 1163d14c5d2SYehuda Sadeh kfree(req); 1173d14c5d2SYehuda Sadeh } 1183d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_release_request); 1193d14c5d2SYehuda Sadeh 1203d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 1213d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 1221b83bef2SSage Weil unsigned int num_ops, 1233d14c5d2SYehuda Sadeh bool use_mempool, 12454a54007SAlex Elder gfp_t gfp_flags) 1253d14c5d2SYehuda Sadeh { 1263d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1273d14c5d2SYehuda Sadeh struct ceph_msg *msg; 1281b83bef2SSage Weil size_t msg_size; 1293d14c5d2SYehuda Sadeh 1301b83bef2SSage Weil msg_size = 4 + 4 + 8 + 8 + 4+8; 1311b83bef2SSage Weil msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 1321b83bef2SSage Weil msg_size += 1 + 8 + 4 + 4; /* pg_t */ 1331b83bef2SSage Weil msg_size += 4 + MAX_OBJ_NAME_SIZE; 1341b83bef2SSage Weil msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); 1351b83bef2SSage Weil msg_size += 8; /* snapid */ 1361b83bef2SSage Weil msg_size += 8; /* snap_seq */ 1371b83bef2SSage Weil msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ 1381b83bef2SSage Weil msg_size += 4; 1393d14c5d2SYehuda Sadeh 1403d14c5d2SYehuda Sadeh if (use_mempool) { 1413d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 1423d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 1433d14c5d2SYehuda Sadeh } else { 1443d14c5d2SYehuda Sadeh req = kzalloc(sizeof(*req), gfp_flags); 1453d14c5d2SYehuda Sadeh } 1463d14c5d2SYehuda Sadeh if (req == NULL) 1473d14c5d2SYehuda Sadeh return NULL; 1483d14c5d2SYehuda Sadeh 1493d14c5d2SYehuda Sadeh req->r_osdc = osdc; 1503d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 1513d14c5d2SYehuda Sadeh 1523d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 1533d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 1543d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 155a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 1563d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 157a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 158a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_osd); 159935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 160cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 161cd43045cSSage Weil 1623d14c5d2SYehuda Sadeh /* create reply message */ 1633d14c5d2SYehuda Sadeh if (use_mempool) 1643d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 1653d14c5d2SYehuda Sadeh else 1663d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 167b61c2763SSage Weil OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 1683d14c5d2SYehuda Sadeh if (!msg) { 1693d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 1703d14c5d2SYehuda Sadeh return NULL; 1713d14c5d2SYehuda Sadeh } 1723d14c5d2SYehuda Sadeh req->r_reply = msg; 1733d14c5d2SYehuda Sadeh 1740fff87ecSAlex Elder req->r_data_in.type = CEPH_OSD_DATA_TYPE_NONE; 1750fff87ecSAlex Elder req->r_data_out.type = CEPH_OSD_DATA_TYPE_NONE; 176d50b409fSSage Weil 1773d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 1783d14c5d2SYehuda Sadeh if (use_mempool) 1793d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 1803d14c5d2SYehuda Sadeh else 181b61c2763SSage Weil msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 1823d14c5d2SYehuda Sadeh if (!msg) { 1833d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 1843d14c5d2SYehuda Sadeh return NULL; 1853d14c5d2SYehuda Sadeh } 1863d14c5d2SYehuda Sadeh 1873d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 1883d14c5d2SYehuda Sadeh 1893d14c5d2SYehuda Sadeh req->r_request = msg; 1903d14c5d2SYehuda Sadeh 1913d14c5d2SYehuda Sadeh return req; 1923d14c5d2SYehuda Sadeh } 1933d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 1943d14c5d2SYehuda Sadeh 195a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 196a8dd0a37SAlex Elder { 197a8dd0a37SAlex Elder switch (opcode) { 198a8dd0a37SAlex Elder case CEPH_OSD_OP_READ: 199a8dd0a37SAlex Elder case CEPH_OSD_OP_STAT: 200a8dd0a37SAlex Elder case CEPH_OSD_OP_MAPEXT: 201a8dd0a37SAlex Elder case CEPH_OSD_OP_MASKTRUNC: 202a8dd0a37SAlex Elder case CEPH_OSD_OP_SPARSE_READ: 203a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY: 204a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY_ACK: 205a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_VER: 206a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITE: 207a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITEFULL: 208a8dd0a37SAlex Elder case CEPH_OSD_OP_TRUNCATE: 209a8dd0a37SAlex Elder case CEPH_OSD_OP_ZERO: 210a8dd0a37SAlex Elder case CEPH_OSD_OP_DELETE: 211a8dd0a37SAlex Elder case CEPH_OSD_OP_APPEND: 212a8dd0a37SAlex Elder case CEPH_OSD_OP_STARTSYNC: 213a8dd0a37SAlex Elder case CEPH_OSD_OP_SETTRUNC: 214a8dd0a37SAlex Elder case CEPH_OSD_OP_TRIMTRUNC: 215a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPUP: 216a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPPUT: 217a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPGET: 218a8dd0a37SAlex Elder case CEPH_OSD_OP_CREATE: 219a8dd0a37SAlex Elder case CEPH_OSD_OP_ROLLBACK: 220a8dd0a37SAlex Elder case CEPH_OSD_OP_WATCH: 221a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETKEYS: 222a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALS: 223a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETHEADER: 224a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALSBYKEYS: 225a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETVALS: 226a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETHEADER: 227a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPCLEAR: 228a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPRMKEYS: 229a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAP_CMP: 230a8dd0a37SAlex Elder case CEPH_OSD_OP_CLONERANGE: 231a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_SRC_VERSION: 232a8dd0a37SAlex Elder case CEPH_OSD_OP_SRC_CMPXATTR: 233a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTR: 234a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTRS: 235a8dd0a37SAlex Elder case CEPH_OSD_OP_CMPXATTR: 236a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTR: 237a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTRS: 238a8dd0a37SAlex Elder case CEPH_OSD_OP_RESETXATTRS: 239a8dd0a37SAlex Elder case CEPH_OSD_OP_RMXATTR: 240a8dd0a37SAlex Elder case CEPH_OSD_OP_PULL: 241a8dd0a37SAlex Elder case CEPH_OSD_OP_PUSH: 242a8dd0a37SAlex Elder case CEPH_OSD_OP_BALANCEREADS: 243a8dd0a37SAlex Elder case CEPH_OSD_OP_UNBALANCEREADS: 244a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB: 245a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_RESERVE: 246a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_UNRESERVE: 247a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_STOP: 248a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_MAP: 249a8dd0a37SAlex Elder case CEPH_OSD_OP_WRLOCK: 250a8dd0a37SAlex Elder case CEPH_OSD_OP_WRUNLOCK: 251a8dd0a37SAlex Elder case CEPH_OSD_OP_RDLOCK: 252a8dd0a37SAlex Elder case CEPH_OSD_OP_RDUNLOCK: 253a8dd0a37SAlex Elder case CEPH_OSD_OP_UPLOCK: 254a8dd0a37SAlex Elder case CEPH_OSD_OP_DNLOCK: 255a8dd0a37SAlex Elder case CEPH_OSD_OP_CALL: 256a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS: 257a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS_FILTER: 258a8dd0a37SAlex Elder return true; 259a8dd0a37SAlex Elder default: 260a8dd0a37SAlex Elder return false; 261a8dd0a37SAlex Elder } 262a8dd0a37SAlex Elder } 263a8dd0a37SAlex Elder 26433803f33SAlex Elder /* 26533803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 26633803f33SAlex Elder * other information associated with them. It also serves as a 26733803f33SAlex Elder * common init routine for all the other init functions, below. 26833803f33SAlex Elder */ 26933803f33SAlex Elder void osd_req_op_init(struct ceph_osd_req_op *op, u16 opcode) 27033803f33SAlex Elder { 27133803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 27233803f33SAlex Elder 27333803f33SAlex Elder memset(op, 0, sizeof (*op)); 27433803f33SAlex Elder 27533803f33SAlex Elder op->op = opcode; 27633803f33SAlex Elder } 27733803f33SAlex Elder 27833803f33SAlex Elder void osd_req_op_extent_init(struct ceph_osd_req_op *op, u16 opcode, 27933803f33SAlex Elder u64 offset, u64 length, 28033803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 28133803f33SAlex Elder { 28233803f33SAlex Elder size_t payload_len = 0; 28333803f33SAlex Elder 28433803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); 28533803f33SAlex Elder 28633803f33SAlex Elder osd_req_op_init(op, opcode); 28733803f33SAlex Elder 28833803f33SAlex Elder op->extent.offset = offset; 28933803f33SAlex Elder op->extent.length = length; 29033803f33SAlex Elder op->extent.truncate_size = truncate_size; 29133803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 29233803f33SAlex Elder if (opcode == CEPH_OSD_OP_WRITE) 29333803f33SAlex Elder payload_len += length; 29433803f33SAlex Elder 29533803f33SAlex Elder op->payload_len = payload_len; 29633803f33SAlex Elder } 29733803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 29833803f33SAlex Elder 29933803f33SAlex Elder void osd_req_op_cls_init(struct ceph_osd_req_op *op, u16 opcode, 30033803f33SAlex Elder const char *class, const char *method, 30133803f33SAlex Elder const void *request_data, size_t request_data_size) 30233803f33SAlex Elder { 30333803f33SAlex Elder size_t payload_len = 0; 30433803f33SAlex Elder size_t size; 30533803f33SAlex Elder 30633803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 30733803f33SAlex Elder 30833803f33SAlex Elder osd_req_op_init(op, opcode); 30933803f33SAlex Elder 31033803f33SAlex Elder op->cls.class_name = class; 31133803f33SAlex Elder size = strlen(class); 31233803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 31333803f33SAlex Elder op->cls.class_len = size; 31433803f33SAlex Elder payload_len += size; 31533803f33SAlex Elder 31633803f33SAlex Elder op->cls.method_name = method; 31733803f33SAlex Elder size = strlen(method); 31833803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 31933803f33SAlex Elder op->cls.method_len = size; 32033803f33SAlex Elder payload_len += size; 32133803f33SAlex Elder 32233803f33SAlex Elder op->cls.indata = request_data; 32333803f33SAlex Elder BUG_ON(request_data_size > (size_t) U32_MAX); 32433803f33SAlex Elder op->cls.indata_len = (u32) request_data_size; 32533803f33SAlex Elder payload_len += request_data_size; 32633803f33SAlex Elder 32733803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 32833803f33SAlex Elder 32933803f33SAlex Elder op->payload_len = payload_len; 33033803f33SAlex Elder } 33133803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 33233803f33SAlex Elder 33333803f33SAlex Elder void osd_req_op_watch_init(struct ceph_osd_req_op *op, u16 opcode, 33433803f33SAlex Elder u64 cookie, u64 version, int flag) 33533803f33SAlex Elder { 33633803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 33733803f33SAlex Elder 33833803f33SAlex Elder osd_req_op_init(op, opcode); 33933803f33SAlex Elder 34033803f33SAlex Elder op->watch.cookie = cookie; 34133803f33SAlex Elder /* op->watch.ver = version; */ /* XXX 3847 */ 34233803f33SAlex Elder op->watch.ver = cpu_to_le64(version); 34333803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 34433803f33SAlex Elder op->watch.flag = (u8) 1; 34533803f33SAlex Elder } 34633803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 34733803f33SAlex Elder 348175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 3493d14c5d2SYehuda Sadeh struct ceph_osd_op *dst, 3503d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src) 3513d14c5d2SYehuda Sadeh { 352175face2SAlex Elder u64 out_data_len = 0; 35395e072ebSAlex Elder struct ceph_pagelist *pagelist; 354175face2SAlex Elder 355a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 356a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 357a8dd0a37SAlex Elder 358a8dd0a37SAlex Elder return 0; 359a8dd0a37SAlex Elder } 3603d14c5d2SYehuda Sadeh 361065a68f9SAlex Elder switch (src->op) { 362fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 363fbfab539SAlex Elder break; 3643d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 3653d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 366175face2SAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 367175face2SAlex Elder out_data_len = src->extent.length; 368175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 369175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 3703d14c5d2SYehuda Sadeh dst->extent.truncate_size = 3713d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 3723d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 3733d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 3743d14c5d2SYehuda Sadeh break; 3753d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 37695e072ebSAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 37795e072ebSAlex Elder BUG_ON(!pagelist); 37895e072ebSAlex Elder ceph_pagelist_init(pagelist); 37995e072ebSAlex Elder 3803d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 3813d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 3823d14c5d2SYehuda Sadeh dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 38395e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.class_name, 3843d14c5d2SYehuda Sadeh src->cls.class_len); 38595e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.method_name, 3863d14c5d2SYehuda Sadeh src->cls.method_len); 38795e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.indata, 3883d14c5d2SYehuda Sadeh src->cls.indata_len); 38995e072ebSAlex Elder 39095e072ebSAlex Elder req->r_data_out.type = CEPH_OSD_DATA_TYPE_PAGELIST; 39195e072ebSAlex Elder req->r_data_out.pagelist = pagelist; 39295e072ebSAlex Elder out_data_len = pagelist->length; 3933d14c5d2SYehuda Sadeh break; 3943d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 3953d14c5d2SYehuda Sadeh break; 396a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 397a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 398a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 399a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 400a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 401a40c4f10SYehuda Sadeh break; 4023d14c5d2SYehuda Sadeh default: 4034c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 4048f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 4054c46459cSAlex Elder WARN_ON(1); 406a8dd0a37SAlex Elder 407a8dd0a37SAlex Elder return 0; 4083d14c5d2SYehuda Sadeh } 409a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 4103d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 411175face2SAlex Elder 412175face2SAlex Elder return out_data_len; 4133d14c5d2SYehuda Sadeh } 4143d14c5d2SYehuda Sadeh 4153d14c5d2SYehuda Sadeh /* 4163d14c5d2SYehuda Sadeh * build new request AND message 4173d14c5d2SYehuda Sadeh * 4183d14c5d2SYehuda Sadeh */ 4193d14c5d2SYehuda Sadeh void ceph_osdc_build_request(struct ceph_osd_request *req, 420175face2SAlex Elder u64 off, unsigned int num_ops, 4213d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_ops, 4224d6b250bSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 423af77f26cSAlex Elder struct timespec *mtime) 4243d14c5d2SYehuda Sadeh { 4253d14c5d2SYehuda Sadeh struct ceph_msg *msg = req->r_request; 4263d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_op; 4273d14c5d2SYehuda Sadeh void *p; 4281b83bef2SSage Weil size_t msg_size; 4293d14c5d2SYehuda Sadeh int flags = req->r_flags; 430f44246e3SAlex Elder u64 data_len; 4313d14c5d2SYehuda Sadeh int i; 4323d14c5d2SYehuda Sadeh 4331b83bef2SSage Weil req->r_num_ops = num_ops; 4341b83bef2SSage Weil req->r_snapid = snap_id; 4353d14c5d2SYehuda Sadeh req->r_snapc = ceph_get_snap_context(snapc); 4363d14c5d2SYehuda Sadeh 4371b83bef2SSage Weil /* encode request */ 4381b83bef2SSage Weil msg->hdr.version = cpu_to_le16(4); 4393d14c5d2SYehuda Sadeh 4401b83bef2SSage Weil p = msg->front.iov_base; 4411b83bef2SSage Weil ceph_encode_32(&p, 1); /* client_inc is always 1 */ 4421b83bef2SSage Weil req->r_request_osdmap_epoch = p; 4431b83bef2SSage Weil p += 4; 4441b83bef2SSage Weil req->r_request_flags = p; 4451b83bef2SSage Weil p += 4; 4461b83bef2SSage Weil if (req->r_flags & CEPH_OSD_FLAG_WRITE) 4471b83bef2SSage Weil ceph_encode_timespec(p, mtime); 4481b83bef2SSage Weil p += sizeof(struct ceph_timespec); 4491b83bef2SSage Weil req->r_request_reassert_version = p; 4501b83bef2SSage Weil p += sizeof(struct ceph_eversion); /* will get filled in */ 4511b83bef2SSage Weil 4521b83bef2SSage Weil /* oloc */ 4531b83bef2SSage Weil ceph_encode_8(&p, 4); 4541b83bef2SSage Weil ceph_encode_8(&p, 4); 4551b83bef2SSage Weil ceph_encode_32(&p, 8 + 4 + 4); 4561b83bef2SSage Weil req->r_request_pool = p; 4571b83bef2SSage Weil p += 8; 4581b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 4591b83bef2SSage Weil ceph_encode_32(&p, 0); /* key len */ 4601b83bef2SSage Weil 4611b83bef2SSage Weil ceph_encode_8(&p, 1); 4621b83bef2SSage Weil req->r_request_pgid = p; 4631b83bef2SSage Weil p += 8 + 4; 4641b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 4651b83bef2SSage Weil 4661b83bef2SSage Weil /* oid */ 4671b83bef2SSage Weil ceph_encode_32(&p, req->r_oid_len); 468af77f26cSAlex Elder memcpy(p, req->r_oid, req->r_oid_len); 4691b83bef2SSage Weil dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); 470af77f26cSAlex Elder p += req->r_oid_len; 4713d14c5d2SYehuda Sadeh 472175face2SAlex Elder /* ops--can imply data */ 4731b83bef2SSage Weil ceph_encode_16(&p, num_ops); 4743d14c5d2SYehuda Sadeh src_op = src_ops; 4751b83bef2SSage Weil req->r_request_ops = p; 476175face2SAlex Elder data_len = 0; 4771b83bef2SSage Weil for (i = 0; i < num_ops; i++, src_op++) { 478175face2SAlex Elder data_len += osd_req_encode_op(req, p, src_op); 4791b83bef2SSage Weil p += sizeof(struct ceph_osd_op); 4801b83bef2SSage Weil } 4813d14c5d2SYehuda Sadeh 4821b83bef2SSage Weil /* snaps */ 4831b83bef2SSage Weil ceph_encode_64(&p, req->r_snapid); 4841b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 4851b83bef2SSage Weil ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 4861b83bef2SSage Weil if (req->r_snapc) { 4873d14c5d2SYehuda Sadeh for (i = 0; i < snapc->num_snaps; i++) { 4881b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc->snaps[i]); 4893d14c5d2SYehuda Sadeh } 4903d14c5d2SYehuda Sadeh } 4913d14c5d2SYehuda Sadeh 4921b83bef2SSage Weil req->r_request_attempts = p; 4931b83bef2SSage Weil p += 4; 4941b83bef2SSage Weil 495175face2SAlex Elder /* data */ 4960baa1bd9SAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 4970baa1bd9SAlex Elder u16 data_off; 4980baa1bd9SAlex Elder 4990baa1bd9SAlex Elder /* 5000baa1bd9SAlex Elder * The header "data_off" is a hint to the receiver 5010baa1bd9SAlex Elder * allowing it to align received data into its 5020baa1bd9SAlex Elder * buffers such that there's no need to re-copy 5030baa1bd9SAlex Elder * it before writing it to disk (direct I/O). 5040baa1bd9SAlex Elder */ 5050baa1bd9SAlex Elder data_off = (u16) (off & 0xffff); 5060baa1bd9SAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 5070baa1bd9SAlex Elder } 508f44246e3SAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 509c5c6b19dSSage Weil 5103d14c5d2SYehuda Sadeh BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 5113d14c5d2SYehuda Sadeh msg_size = p - msg->front.iov_base; 5123d14c5d2SYehuda Sadeh msg->front.iov_len = msg_size; 5133d14c5d2SYehuda Sadeh msg->hdr.front_len = cpu_to_le32(msg_size); 5141b83bef2SSage Weil 515acead002SAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 5163d14c5d2SYehuda Sadeh } 5173d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_build_request); 5183d14c5d2SYehuda Sadeh 5193d14c5d2SYehuda Sadeh /* 5203d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 5213d14c5d2SYehuda Sadeh * extent as needed. 5223d14c5d2SYehuda Sadeh * 5233d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 5243d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 5253d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 5263d14c5d2SYehuda Sadeh * 5273d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 5283d14c5d2SYehuda Sadeh * data quickly. 5293d14c5d2SYehuda Sadeh */ 5303d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 5313d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 5323d14c5d2SYehuda Sadeh struct ceph_vino vino, 533acead002SAlex Elder u64 off, u64 *plen, int num_ops, 534acead002SAlex Elder struct ceph_osd_req_op *ops, 5353d14c5d2SYehuda Sadeh int opcode, int flags, 5363d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5373d14c5d2SYehuda Sadeh u32 truncate_seq, 5383d14c5d2SYehuda Sadeh u64 truncate_size, 539153e5167SAlex Elder bool use_mempool) 5403d14c5d2SYehuda Sadeh { 5413d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 54275d1c941SAlex Elder u64 objnum = 0; 54375d1c941SAlex Elder u64 objoff = 0; 54475d1c941SAlex Elder u64 objlen = 0; 545d18d1e28SAlex Elder u32 object_size; 546d18d1e28SAlex Elder u64 object_base; 5476816282dSSage Weil int r; 5483d14c5d2SYehuda Sadeh 549d18d1e28SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); 5503d14c5d2SYehuda Sadeh 551acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 552ae7ca4a3SAlex Elder GFP_NOFS); 5534ad12621SSage Weil if (!req) 5546816282dSSage Weil return ERR_PTR(-ENOMEM); 555d178a9e7SAlex Elder req->r_flags = flags; 5563d14c5d2SYehuda Sadeh 5573d14c5d2SYehuda Sadeh /* calculate max write size */ 558a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 5593ff5f385SAlex Elder if (r < 0) { 5603ff5f385SAlex Elder ceph_osdc_put_request(req); 5616816282dSSage Weil return ERR_PTR(r); 5623ff5f385SAlex Elder } 563a19dadfbSAlex Elder 564d18d1e28SAlex Elder object_size = le32_to_cpu(layout->fl_object_size); 565d18d1e28SAlex Elder object_base = off - objoff; 566d18d1e28SAlex Elder if (truncate_size <= object_base) { 567d18d1e28SAlex Elder truncate_size = 0; 568d18d1e28SAlex Elder } else { 569d18d1e28SAlex Elder truncate_size -= object_base; 570d18d1e28SAlex Elder if (truncate_size > object_size) 571d18d1e28SAlex Elder truncate_size = object_size; 572d18d1e28SAlex Elder } 573d18d1e28SAlex Elder 574b0270324SAlex Elder osd_req_op_extent_init(&ops[0], opcode, objoff, objlen, 575b0270324SAlex Elder truncate_size, truncate_seq); 576acead002SAlex Elder /* 577acead002SAlex Elder * A second op in the ops array means the caller wants to 578acead002SAlex Elder * also issue a include a 'startsync' command so that the 579acead002SAlex Elder * osd will flush data quickly. 580acead002SAlex Elder */ 581acead002SAlex Elder if (num_ops > 1) 582b0270324SAlex Elder osd_req_op_init(&ops[1], CEPH_OSD_OP_STARTSYNC); 583d18d1e28SAlex Elder 5843d14c5d2SYehuda Sadeh req->r_file_layout = *layout; /* keep a copy */ 5853d14c5d2SYehuda Sadeh 58675d1c941SAlex Elder snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", 58775d1c941SAlex Elder vino.ino, objnum); 588dbe0fc41SAlex Elder req->r_oid_len = strlen(req->r_oid); 589dbe0fc41SAlex Elder 5903d14c5d2SYehuda Sadeh return req; 5913d14c5d2SYehuda Sadeh } 5923d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 5933d14c5d2SYehuda Sadeh 5943d14c5d2SYehuda Sadeh /* 5953d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 5963d14c5d2SYehuda Sadeh */ 5973d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 5983d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 5993d14c5d2SYehuda Sadeh { 6003d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 6013d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 6023d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 6033d14c5d2SYehuda Sadeh 6043d14c5d2SYehuda Sadeh while (*p) { 6053d14c5d2SYehuda Sadeh parent = *p; 6063d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 6073d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 6083d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 6093d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 6103d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 6113d14c5d2SYehuda Sadeh else 6123d14c5d2SYehuda Sadeh BUG(); 6133d14c5d2SYehuda Sadeh } 6143d14c5d2SYehuda Sadeh 6153d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 6163d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 6173d14c5d2SYehuda Sadeh } 6183d14c5d2SYehuda Sadeh 6193d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 6203d14c5d2SYehuda Sadeh u64 tid) 6213d14c5d2SYehuda Sadeh { 6223d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 6233d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 6243d14c5d2SYehuda Sadeh 6253d14c5d2SYehuda Sadeh while (n) { 6263d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 6273d14c5d2SYehuda Sadeh if (tid < req->r_tid) 6283d14c5d2SYehuda Sadeh n = n->rb_left; 6293d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 6303d14c5d2SYehuda Sadeh n = n->rb_right; 6313d14c5d2SYehuda Sadeh else 6323d14c5d2SYehuda Sadeh return req; 6333d14c5d2SYehuda Sadeh } 6343d14c5d2SYehuda Sadeh return NULL; 6353d14c5d2SYehuda Sadeh } 6363d14c5d2SYehuda Sadeh 6373d14c5d2SYehuda Sadeh static struct ceph_osd_request * 6383d14c5d2SYehuda Sadeh __lookup_request_ge(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 if (!n->rb_left) 6483d14c5d2SYehuda Sadeh return req; 6493d14c5d2SYehuda Sadeh n = n->rb_left; 6503d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 6513d14c5d2SYehuda Sadeh n = n->rb_right; 6523d14c5d2SYehuda Sadeh } else { 6533d14c5d2SYehuda Sadeh return req; 6543d14c5d2SYehuda Sadeh } 6553d14c5d2SYehuda Sadeh } 6563d14c5d2SYehuda Sadeh return NULL; 6573d14c5d2SYehuda Sadeh } 6583d14c5d2SYehuda Sadeh 6596f6c7006SSage Weil /* 6606f6c7006SSage Weil * Resubmit requests pending on the given osd. 6616f6c7006SSage Weil */ 6626f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 6636f6c7006SSage Weil struct ceph_osd *osd) 6646f6c7006SSage Weil { 665a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 666e02493c0SAlex Elder LIST_HEAD(resend); 6676f6c7006SSage Weil int err; 6686f6c7006SSage Weil 6696f6c7006SSage Weil dout("__kick_osd_requests osd%d\n", osd->o_osd); 6706f6c7006SSage Weil err = __reset_osd(osdc, osd); 671685a7555SAlex Elder if (err) 6726f6c7006SSage Weil return; 673e02493c0SAlex Elder /* 674e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 675e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 676e02493c0SAlex Elder * sent in tid order, and that is also the order they're 677e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 678e02493c0SAlex Elder * flight will be found first, followed by all requests that 679e02493c0SAlex Elder * have not yet been sent. And to resend requests while 680e02493c0SAlex Elder * preserving this order we will want to put any sent 681e02493c0SAlex Elder * requests back on the front of the osd client's unsent 682e02493c0SAlex Elder * list. 683e02493c0SAlex Elder * 684e02493c0SAlex Elder * So we build a separate ordered list of already-sent 685e02493c0SAlex Elder * requests for the affected osd and splice it onto the 686e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 687e02493c0SAlex Elder * request that has not yet been sent we're done. Those 688e02493c0SAlex Elder * requests are already sitting right where they belong. 689e02493c0SAlex Elder */ 6906f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 691e02493c0SAlex Elder if (!req->r_sent) 692e02493c0SAlex Elder break; 693e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 694e02493c0SAlex Elder dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, 6956f6c7006SSage Weil osd->o_osd); 696a40c4f10SYehuda Sadeh if (!req->r_linger) 6976f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 6986f6c7006SSage Weil } 699e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 700a40c4f10SYehuda Sadeh 701e02493c0SAlex Elder /* 702e02493c0SAlex Elder * Linger requests are re-registered before sending, which 703e02493c0SAlex Elder * sets up a new tid for each. We add them to the unsent 704e02493c0SAlex Elder * list at the end to keep things in tid order. 705e02493c0SAlex Elder */ 706a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 707a40c4f10SYehuda Sadeh r_linger_osd) { 70877f38e0eSSage Weil /* 70977f38e0eSSage Weil * reregister request prior to unregistering linger so 71077f38e0eSSage Weil * that r_osd is preserved. 71177f38e0eSSage Weil */ 71277f38e0eSSage Weil BUG_ON(!list_empty(&req->r_req_lru_item)); 713a40c4f10SYehuda Sadeh __register_request(osdc, req); 714e02493c0SAlex Elder list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); 715ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 71677f38e0eSSage Weil __unregister_linger_request(osdc, req); 717a40c4f10SYehuda Sadeh dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, 718a40c4f10SYehuda Sadeh osd->o_osd); 719a40c4f10SYehuda Sadeh } 7206f6c7006SSage Weil } 7216f6c7006SSage Weil 7223d14c5d2SYehuda Sadeh /* 7233d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 7243d14c5d2SYehuda Sadeh */ 7253d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 7263d14c5d2SYehuda Sadeh { 7273d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 7283d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 7293d14c5d2SYehuda Sadeh 7303d14c5d2SYehuda Sadeh if (!osd) 7313d14c5d2SYehuda Sadeh return; 7323d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 7333d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 7343d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 73583aff95eSSage Weil mutex_lock(&osdc->request_mutex); 73683aff95eSSage Weil __kick_osd_requests(osdc, osd); 737f9d25199SAlex Elder __send_queued(osdc); 73883aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 7393d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 7403d14c5d2SYehuda Sadeh } 7413d14c5d2SYehuda Sadeh 7423d14c5d2SYehuda Sadeh /* 7433d14c5d2SYehuda Sadeh * Track open sessions with osds. 7443d14c5d2SYehuda Sadeh */ 745e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 7463d14c5d2SYehuda Sadeh { 7473d14c5d2SYehuda Sadeh struct ceph_osd *osd; 7483d14c5d2SYehuda Sadeh 7493d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 7503d14c5d2SYehuda Sadeh if (!osd) 7513d14c5d2SYehuda Sadeh return NULL; 7523d14c5d2SYehuda Sadeh 7533d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 7543d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 755e10006f8SAlex Elder osd->o_osd = onum; 756f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 7573d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 758a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 7593d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 7603d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 7613d14c5d2SYehuda Sadeh 762b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 7633d14c5d2SYehuda Sadeh 7643d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 7653d14c5d2SYehuda Sadeh return osd; 7663d14c5d2SYehuda Sadeh } 7673d14c5d2SYehuda Sadeh 7683d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 7693d14c5d2SYehuda Sadeh { 7703d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 7713d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 7723d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 7733d14c5d2SYehuda Sadeh return osd; 7743d14c5d2SYehuda Sadeh } else { 7753d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 7763d14c5d2SYehuda Sadeh return NULL; 7773d14c5d2SYehuda Sadeh } 7783d14c5d2SYehuda Sadeh } 7793d14c5d2SYehuda Sadeh 7803d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 7813d14c5d2SYehuda Sadeh { 7823d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 7833d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 784a255651dSAlex Elder if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { 7853d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 7863d14c5d2SYehuda Sadeh 78727859f97SSage Weil ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); 7883d14c5d2SYehuda Sadeh kfree(osd); 7893d14c5d2SYehuda Sadeh } 7903d14c5d2SYehuda Sadeh } 7913d14c5d2SYehuda Sadeh 7923d14c5d2SYehuda Sadeh /* 7933d14c5d2SYehuda Sadeh * remove an osd from our map 7943d14c5d2SYehuda Sadeh */ 7953d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 7963d14c5d2SYehuda Sadeh { 7973d14c5d2SYehuda Sadeh dout("__remove_osd %p\n", osd); 7983d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_requests)); 7993d14c5d2SYehuda Sadeh rb_erase(&osd->o_node, &osdc->osds); 8003d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 8013d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 8023d14c5d2SYehuda Sadeh put_osd(osd); 8033d14c5d2SYehuda Sadeh } 8043d14c5d2SYehuda Sadeh 805aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 806aca420bcSSage Weil { 807048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 808aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 809aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 810aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 811aca420bcSSage Weil struct ceph_osd, o_node); 812aca420bcSSage Weil __remove_osd(osdc, osd); 813aca420bcSSage Weil } 814aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 815aca420bcSSage Weil } 816aca420bcSSage Weil 8173d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 8183d14c5d2SYehuda Sadeh struct ceph_osd *osd) 8193d14c5d2SYehuda Sadeh { 8203d14c5d2SYehuda Sadeh dout("__move_osd_to_lru %p\n", osd); 8213d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 8223d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 8233d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 8243d14c5d2SYehuda Sadeh } 8253d14c5d2SYehuda Sadeh 8263d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 8273d14c5d2SYehuda Sadeh { 8283d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 8293d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 8303d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 8313d14c5d2SYehuda Sadeh } 8323d14c5d2SYehuda Sadeh 833aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 8343d14c5d2SYehuda Sadeh { 8353d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 8363d14c5d2SYehuda Sadeh 8373d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 8383d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 8393d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 840aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 8413d14c5d2SYehuda Sadeh break; 8423d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 8433d14c5d2SYehuda Sadeh } 8443d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 8453d14c5d2SYehuda Sadeh } 8463d14c5d2SYehuda Sadeh 8473d14c5d2SYehuda Sadeh /* 8483d14c5d2SYehuda Sadeh * reset osd connect 8493d14c5d2SYehuda Sadeh */ 8503d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 8513d14c5d2SYehuda Sadeh { 852c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 8533d14c5d2SYehuda Sadeh 8543d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 855a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 856a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 8573d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 858c3acb181SAlex Elder 859c3acb181SAlex Elder return -ENODEV; 860c3acb181SAlex Elder } 861c3acb181SAlex Elder 862c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 863c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 8643d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 865c3acb181SAlex Elder struct ceph_osd_request *req; 866c3acb181SAlex Elder 8673d14c5d2SYehuda Sadeh dout(" osd addr hasn't changed and connection never opened," 8683d14c5d2SYehuda Sadeh " letting msgr retry"); 8693d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 8703d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 8713d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 872c3acb181SAlex Elder 873c3acb181SAlex Elder return -EAGAIN; 8743d14c5d2SYehuda Sadeh } 875c3acb181SAlex Elder 876c3acb181SAlex Elder ceph_con_close(&osd->o_con); 877c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 878c3acb181SAlex Elder osd->o_incarnation++; 879c3acb181SAlex Elder 880c3acb181SAlex Elder return 0; 8813d14c5d2SYehuda Sadeh } 8823d14c5d2SYehuda Sadeh 8833d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 8843d14c5d2SYehuda Sadeh { 8853d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 8863d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 8873d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 8883d14c5d2SYehuda Sadeh 889aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 8903d14c5d2SYehuda Sadeh while (*p) { 8913d14c5d2SYehuda Sadeh parent = *p; 8923d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 8933d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 8943d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 8953d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 8963d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 8973d14c5d2SYehuda Sadeh else 8983d14c5d2SYehuda Sadeh BUG(); 8993d14c5d2SYehuda Sadeh } 9003d14c5d2SYehuda Sadeh 9013d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 9023d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 9033d14c5d2SYehuda Sadeh } 9043d14c5d2SYehuda Sadeh 9053d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 9063d14c5d2SYehuda Sadeh { 9073d14c5d2SYehuda Sadeh struct ceph_osd *osd; 9083d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 9093d14c5d2SYehuda Sadeh 9103d14c5d2SYehuda Sadeh while (n) { 9113d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 9123d14c5d2SYehuda Sadeh if (o < osd->o_osd) 9133d14c5d2SYehuda Sadeh n = n->rb_left; 9143d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 9153d14c5d2SYehuda Sadeh n = n->rb_right; 9163d14c5d2SYehuda Sadeh else 9173d14c5d2SYehuda Sadeh return osd; 9183d14c5d2SYehuda Sadeh } 9193d14c5d2SYehuda Sadeh return NULL; 9203d14c5d2SYehuda Sadeh } 9213d14c5d2SYehuda Sadeh 9223d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 9233d14c5d2SYehuda Sadeh { 9243d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 9253d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 9263d14c5d2SYehuda Sadeh } 9273d14c5d2SYehuda Sadeh 9283d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 9293d14c5d2SYehuda Sadeh { 9303d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 9313d14c5d2SYehuda Sadeh } 9323d14c5d2SYehuda Sadeh 9333d14c5d2SYehuda Sadeh /* 9343d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 9353d14c5d2SYehuda Sadeh * the timeout event. 9363d14c5d2SYehuda Sadeh */ 937a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 9383d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 9393d14c5d2SYehuda Sadeh { 9403d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 9413d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 94277f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 9433d14c5d2SYehuda Sadeh __insert_request(osdc, req); 9443d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 9453d14c5d2SYehuda Sadeh osdc->num_requests++; 9463d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 9473d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 9483d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 9493d14c5d2SYehuda Sadeh } 950a40c4f10SYehuda Sadeh } 951a40c4f10SYehuda Sadeh 9523d14c5d2SYehuda Sadeh /* 9533d14c5d2SYehuda Sadeh * called under osdc->request_mutex 9543d14c5d2SYehuda Sadeh */ 9553d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 9563d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 9573d14c5d2SYehuda Sadeh { 95835f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 95935f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 96035f9f8a0SSage Weil req, req->r_tid); 96135f9f8a0SSage Weil return; 96235f9f8a0SSage Weil } 96335f9f8a0SSage Weil 9643d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 9653d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 9663d14c5d2SYehuda Sadeh osdc->num_requests--; 9673d14c5d2SYehuda Sadeh 9683d14c5d2SYehuda Sadeh if (req->r_osd) { 9693d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 9706740a845SAlex Elder ceph_msg_revoke(req->r_request); 9713d14c5d2SYehuda Sadeh 9723d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 973a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 974a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 975a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 9763d14c5d2SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 977a40c4f10SYehuda Sadeh } 978fbdb9190SSage Weil if (list_empty(&req->r_linger_item)) 9793d14c5d2SYehuda Sadeh req->r_osd = NULL; 9803d14c5d2SYehuda Sadeh } 9813d14c5d2SYehuda Sadeh 9827d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 9833d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 9843d14c5d2SYehuda Sadeh 9853d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 9863d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 9873d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 9883d14c5d2SYehuda Sadeh } 9893d14c5d2SYehuda Sadeh } 9903d14c5d2SYehuda Sadeh 9913d14c5d2SYehuda Sadeh /* 9923d14c5d2SYehuda Sadeh * Cancel a previously queued request message 9933d14c5d2SYehuda Sadeh */ 9943d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 9953d14c5d2SYehuda Sadeh { 9963d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 9976740a845SAlex Elder ceph_msg_revoke(req->r_request); 9983d14c5d2SYehuda Sadeh req->r_sent = 0; 9993d14c5d2SYehuda Sadeh } 10003d14c5d2SYehuda Sadeh } 10013d14c5d2SYehuda Sadeh 1002a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1003a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1004a40c4f10SYehuda Sadeh { 1005a40c4f10SYehuda Sadeh dout("__register_linger_request %p\n", req); 1006a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 10076194ea89SSage Weil if (req->r_osd) 10086194ea89SSage Weil list_add_tail(&req->r_linger_osd, 10096194ea89SSage Weil &req->r_osd->o_linger_requests); 1010a40c4f10SYehuda Sadeh } 1011a40c4f10SYehuda Sadeh 1012a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1013a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1014a40c4f10SYehuda Sadeh { 1015a40c4f10SYehuda Sadeh dout("__unregister_linger_request %p\n", req); 1016a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 101761c74035SAlex Elder if (req->r_osd) { 1018a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_osd); 1019a40c4f10SYehuda Sadeh 1020a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 1021a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 1022a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 1023a40c4f10SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 1024a40c4f10SYehuda Sadeh } 1025fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1026a40c4f10SYehuda Sadeh req->r_osd = NULL; 1027a40c4f10SYehuda Sadeh } 1028a40c4f10SYehuda Sadeh } 1029a40c4f10SYehuda Sadeh 1030a40c4f10SYehuda Sadeh void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, 1031a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1032a40c4f10SYehuda Sadeh { 1033a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1034a40c4f10SYehuda Sadeh if (req->r_linger) { 1035a40c4f10SYehuda Sadeh __unregister_linger_request(osdc, req); 1036a40c4f10SYehuda Sadeh ceph_osdc_put_request(req); 1037a40c4f10SYehuda Sadeh } 1038a40c4f10SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1039a40c4f10SYehuda Sadeh } 1040a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); 1041a40c4f10SYehuda Sadeh 1042a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1043a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1044a40c4f10SYehuda Sadeh { 1045a40c4f10SYehuda Sadeh if (!req->r_linger) { 1046a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1047a40c4f10SYehuda Sadeh req->r_linger = 1; 1048a40c4f10SYehuda Sadeh /* 1049a40c4f10SYehuda Sadeh * caller is now responsible for calling 1050a40c4f10SYehuda Sadeh * unregister_linger_request 1051a40c4f10SYehuda Sadeh */ 1052a40c4f10SYehuda Sadeh ceph_osdc_get_request(req); 1053a40c4f10SYehuda Sadeh } 1054a40c4f10SYehuda Sadeh } 1055a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1056a40c4f10SYehuda Sadeh 10573d14c5d2SYehuda Sadeh /* 10583d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 10593d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 106025985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 10616f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 10623d14c5d2SYehuda Sadeh * 10633d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 10643d14c5d2SYehuda Sadeh * 10653d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 10663d14c5d2SYehuda Sadeh */ 10676f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 106838d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 10693d14c5d2SYehuda Sadeh { 10705b191d99SSage Weil struct ceph_pg pgid; 10713d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 10723d14c5d2SYehuda Sadeh int o = -1, num = 0; 10733d14c5d2SYehuda Sadeh int err; 10743d14c5d2SYehuda Sadeh 10756f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 107641766f87SAlex Elder err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, 107741766f87SAlex Elder ceph_file_layout_pg_pool(req->r_file_layout)); 10786f6c7006SSage Weil if (err) { 10796f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 10803d14c5d2SYehuda Sadeh return err; 10816f6c7006SSage Weil } 10823d14c5d2SYehuda Sadeh req->r_pgid = pgid; 10833d14c5d2SYehuda Sadeh 10843d14c5d2SYehuda Sadeh err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); 10853d14c5d2SYehuda Sadeh if (err > 0) { 10863d14c5d2SYehuda Sadeh o = acting[0]; 10873d14c5d2SYehuda Sadeh num = err; 10883d14c5d2SYehuda Sadeh } 10893d14c5d2SYehuda Sadeh 109038d6453cSSage Weil if ((!force_resend && 109138d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 10923d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 10933d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 10943d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 10953d14c5d2SYehuda Sadeh (req->r_osd == NULL && o == -1)) 10963d14c5d2SYehuda Sadeh return 0; /* no change */ 10973d14c5d2SYehuda Sadeh 10985b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 10995b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 11003d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 11013d14c5d2SYehuda Sadeh 11023d14c5d2SYehuda Sadeh /* record full pg acting set */ 11033d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 11043d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 11053d14c5d2SYehuda Sadeh 11063d14c5d2SYehuda Sadeh if (req->r_osd) { 11073d14c5d2SYehuda Sadeh __cancel_request(req); 11083d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 11093d14c5d2SYehuda Sadeh req->r_osd = NULL; 11103d14c5d2SYehuda Sadeh } 11113d14c5d2SYehuda Sadeh 11123d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 11133d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 11143d14c5d2SYehuda Sadeh err = -ENOMEM; 1115e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 11166f6c7006SSage Weil if (!req->r_osd) { 11176f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 11183d14c5d2SYehuda Sadeh goto out; 11196f6c7006SSage Weil } 11203d14c5d2SYehuda Sadeh 11216f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 11223d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 11233d14c5d2SYehuda Sadeh 1124b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1125b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1126b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 11273d14c5d2SYehuda Sadeh } 11283d14c5d2SYehuda Sadeh 11293d14c5d2SYehuda Sadeh if (req->r_osd) { 11303d14c5d2SYehuda Sadeh __remove_osd_from_lru(req->r_osd); 1131ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1132ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 11336f6c7006SSage Weil } else { 1134ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 11353d14c5d2SYehuda Sadeh } 11363d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 11373d14c5d2SYehuda Sadeh 11383d14c5d2SYehuda Sadeh out: 11393d14c5d2SYehuda Sadeh return err; 11403d14c5d2SYehuda Sadeh } 11413d14c5d2SYehuda Sadeh 11423d14c5d2SYehuda Sadeh /* 11433d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 11443d14c5d2SYehuda Sadeh */ 114556e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 11463d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 11473d14c5d2SYehuda Sadeh { 11481b83bef2SSage Weil void *p; 11493d14c5d2SYehuda Sadeh 11501b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 11511b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 11521b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 11533d14c5d2SYehuda Sadeh 11541b83bef2SSage Weil /* fill in message content that changes each time we send it */ 11551b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 11561b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 11571b83bef2SSage Weil put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); 11581b83bef2SSage Weil p = req->r_request_pgid; 11591b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 11601b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 11611b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 11621b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 11631b83bef2SSage Weil sizeof(req->r_reassert_version)); 11642169aea6SSage Weil 11653d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 11663d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 11673d14c5d2SYehuda Sadeh 11683d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 11693d14c5d2SYehuda Sadeh ceph_con_send(&req->r_osd->o_con, req->r_request); 11703d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 11713d14c5d2SYehuda Sadeh } 11723d14c5d2SYehuda Sadeh 11733d14c5d2SYehuda Sadeh /* 11746f6c7006SSage Weil * Send any requests in the queue (req_unsent). 11756f6c7006SSage Weil */ 1176f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 11776f6c7006SSage Weil { 11786f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 11796f6c7006SSage Weil 1180f9d25199SAlex Elder dout("__send_queued\n"); 1181f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 11826f6c7006SSage Weil __send_request(osdc, req); 11836f6c7006SSage Weil } 11846f6c7006SSage Weil 11856f6c7006SSage Weil /* 11863d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 11873d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 11883d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 11893d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 11903d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 11913d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 11923d14c5d2SYehuda Sadeh * there are no open requests). 11933d14c5d2SYehuda Sadeh */ 11943d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 11953d14c5d2SYehuda Sadeh { 11963d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 11973d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 119883aff95eSSage Weil struct ceph_osd_request *req; 11993d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12003d14c5d2SYehuda Sadeh unsigned long keepalive = 12013d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 12023d14c5d2SYehuda Sadeh struct list_head slow_osds; 12033d14c5d2SYehuda Sadeh dout("timeout\n"); 12043d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 12053d14c5d2SYehuda Sadeh 12063d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 12073d14c5d2SYehuda Sadeh 12083d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 12093d14c5d2SYehuda Sadeh 12103d14c5d2SYehuda Sadeh /* 12113d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 12123d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 12133d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 12143d14c5d2SYehuda Sadeh */ 12153d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 12163d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 12173d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 12183d14c5d2SYehuda Sadeh break; 12193d14c5d2SYehuda Sadeh 12203d14c5d2SYehuda Sadeh osd = req->r_osd; 12213d14c5d2SYehuda Sadeh BUG_ON(!osd); 12223d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 12233d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 12243d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 12253d14c5d2SYehuda Sadeh } 12263d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 12273d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 12283d14c5d2SYehuda Sadeh o_keepalive_item); 12293d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 12303d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 12313d14c5d2SYehuda Sadeh } 12323d14c5d2SYehuda Sadeh 12333d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1234f9d25199SAlex Elder __send_queued(osdc); 12353d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 12363d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 12373d14c5d2SYehuda Sadeh } 12383d14c5d2SYehuda Sadeh 12393d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 12403d14c5d2SYehuda Sadeh { 12413d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 12423d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 12433d14c5d2SYehuda Sadeh osds_timeout_work.work); 12443d14c5d2SYehuda Sadeh unsigned long delay = 12453d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 12463d14c5d2SYehuda Sadeh 12473d14c5d2SYehuda Sadeh dout("osds timeout\n"); 12483d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1249aca420bcSSage Weil remove_old_osds(osdc); 12503d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 12513d14c5d2SYehuda Sadeh 12523d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 12533d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 12543d14c5d2SYehuda Sadeh } 12553d14c5d2SYehuda Sadeh 125625845472SSage Weil static void complete_request(struct ceph_osd_request *req) 125725845472SSage Weil { 125825845472SSage Weil if (req->r_safe_callback) 125925845472SSage Weil req->r_safe_callback(req, NULL); 126025845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 126125845472SSage Weil } 126225845472SSage Weil 12633d14c5d2SYehuda Sadeh /* 12643d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 12653d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 12663d14c5d2SYehuda Sadeh */ 12673d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 12683d14c5d2SYehuda Sadeh struct ceph_connection *con) 12693d14c5d2SYehuda Sadeh { 12701b83bef2SSage Weil void *p, *end; 12713d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 12723d14c5d2SYehuda Sadeh u64 tid; 12731b83bef2SSage Weil int object_len; 12741b83bef2SSage Weil int numops, payload_len, flags; 12753d14c5d2SYehuda Sadeh s32 result; 12761b83bef2SSage Weil s32 retry_attempt; 12771b83bef2SSage Weil struct ceph_pg pg; 12781b83bef2SSage Weil int err; 12791b83bef2SSage Weil u32 reassert_epoch; 12801b83bef2SSage Weil u64 reassert_version; 12811b83bef2SSage Weil u32 osdmap_epoch; 12820d5af164SAlex Elder int already_completed; 12831b83bef2SSage Weil int i; 12843d14c5d2SYehuda Sadeh 12853d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 12861b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 12871b83bef2SSage Weil 12881b83bef2SSage Weil p = msg->front.iov_base; 12891b83bef2SSage Weil end = p + msg->front.iov_len; 12901b83bef2SSage Weil 12911b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 12921b83bef2SSage Weil object_len = ceph_decode_32(&p); 12931b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 12941b83bef2SSage Weil p += object_len; 12951b83bef2SSage Weil 1296ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 12971b83bef2SSage Weil if (err) 12983d14c5d2SYehuda Sadeh goto bad; 12991b83bef2SSage Weil 13001b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 13011b83bef2SSage Weil flags = ceph_decode_64(&p); 13021b83bef2SSage Weil result = ceph_decode_32(&p); 13031b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 13041b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 13051b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 13061b83bef2SSage Weil 13073d14c5d2SYehuda Sadeh /* lookup */ 13083d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 13093d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 13103d14c5d2SYehuda Sadeh if (req == NULL) { 13113d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 13128058fd45SAlex Elder goto bad_mutex; 13133d14c5d2SYehuda Sadeh } 13143d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 13151b83bef2SSage Weil 13161b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 13171b83bef2SSage Weil req, result); 13181b83bef2SSage Weil 13191b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 13201b83bef2SSage Weil numops = ceph_decode_32(&p); 13211b83bef2SSage Weil if (numops > CEPH_OSD_MAX_OP) 13221b83bef2SSage Weil goto bad_put; 13231b83bef2SSage Weil if (numops != req->r_num_ops) 13241b83bef2SSage Weil goto bad_put; 13251b83bef2SSage Weil payload_len = 0; 13261b83bef2SSage Weil ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); 13271b83bef2SSage Weil for (i = 0; i < numops; i++) { 13281b83bef2SSage Weil struct ceph_osd_op *op = p; 13291b83bef2SSage Weil int len; 13301b83bef2SSage Weil 13311b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 13321b83bef2SSage Weil req->r_reply_op_len[i] = len; 13331b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 13341b83bef2SSage Weil payload_len += len; 13351b83bef2SSage Weil p += sizeof(*op); 13361b83bef2SSage Weil } 13371b83bef2SSage Weil if (payload_len != le32_to_cpu(msg->hdr.data_len)) { 13381b83bef2SSage Weil pr_warning("sum of op payload lens %d != data_len %d", 13391b83bef2SSage Weil payload_len, le32_to_cpu(msg->hdr.data_len)); 13401b83bef2SSage Weil goto bad_put; 13411b83bef2SSage Weil } 13421b83bef2SSage Weil 13431b83bef2SSage Weil ceph_decode_need(&p, end, 4 + numops * 4, bad); 13441b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 13451b83bef2SSage Weil for (i = 0; i < numops; i++) 13461b83bef2SSage Weil req->r_reply_op_result[i] = ceph_decode_32(&p); 13473d14c5d2SYehuda Sadeh 13483d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 134995c96174SEric Dumazet unsigned int bytes; 13503d14c5d2SYehuda Sadeh 13511b83bef2SSage Weil req->r_result = result; 13523d14c5d2SYehuda Sadeh bytes = le32_to_cpu(msg->hdr.data_len); 13533d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 13543d14c5d2SYehuda Sadeh bytes); 13553d14c5d2SYehuda Sadeh if (req->r_result == 0) 13563d14c5d2SYehuda Sadeh req->r_result = bytes; 13573d14c5d2SYehuda Sadeh 13583d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 13591b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 13601b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 13613d14c5d2SYehuda Sadeh 13623d14c5d2SYehuda Sadeh req->r_got_reply = 1; 13633d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 13643d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 13653d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 13663d14c5d2SYehuda Sadeh goto done; 13673d14c5d2SYehuda Sadeh } 13683d14c5d2SYehuda Sadeh 13693d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 13703d14c5d2SYehuda Sadeh 1371a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1372a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1373a40c4f10SYehuda Sadeh 13743d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 13753d14c5d2SYehuda Sadeh if (result < 0 || 13763d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 13773d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 13783d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 13793d14c5d2SYehuda Sadeh 13800d5af164SAlex Elder already_completed = req->r_completed; 13810d5af164SAlex Elder req->r_completed = 1; 13823d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 13830d5af164SAlex Elder if (already_completed) 13840d5af164SAlex Elder goto done; 13853d14c5d2SYehuda Sadeh 13863d14c5d2SYehuda Sadeh if (req->r_callback) 13873d14c5d2SYehuda Sadeh req->r_callback(req, msg); 13883d14c5d2SYehuda Sadeh else 13893d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 13903d14c5d2SYehuda Sadeh 139125845472SSage Weil if (flags & CEPH_OSD_FLAG_ONDISK) 139225845472SSage Weil complete_request(req); 13933d14c5d2SYehuda Sadeh 13943d14c5d2SYehuda Sadeh done: 1395a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 13963d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 13973d14c5d2SYehuda Sadeh return; 13983d14c5d2SYehuda Sadeh 13991b83bef2SSage Weil bad_put: 14001b83bef2SSage Weil ceph_osdc_put_request(req); 14018058fd45SAlex Elder bad_mutex: 14028058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 14033d14c5d2SYehuda Sadeh bad: 14041b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 14051b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 14063d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 14073d14c5d2SYehuda Sadeh } 14083d14c5d2SYehuda Sadeh 14096f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 14103d14c5d2SYehuda Sadeh { 14113d14c5d2SYehuda Sadeh struct rb_node *p, *n; 14123d14c5d2SYehuda Sadeh 14133d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 14146f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 14153d14c5d2SYehuda Sadeh 14163d14c5d2SYehuda Sadeh n = rb_next(p); 14173d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 14183d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 14193d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 14203d14c5d2SYehuda Sadeh osd->o_osd), 14213d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 14223d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 14233d14c5d2SYehuda Sadeh } 14243d14c5d2SYehuda Sadeh } 14253d14c5d2SYehuda Sadeh 14263d14c5d2SYehuda Sadeh /* 14276f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 14286f6c7006SSage Weil * no osd, request a new map. 14293d14c5d2SYehuda Sadeh * 1430e6d50f67SAlex Elder * Caller should hold map_sem for read. 14313d14c5d2SYehuda Sadeh */ 143238d6453cSSage Weil static void kick_requests(struct ceph_osd_client *osdc, int force_resend) 14333d14c5d2SYehuda Sadeh { 1434a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 14356f6c7006SSage Weil struct rb_node *p; 14366f6c7006SSage Weil int needmap = 0; 14376f6c7006SSage Weil int err; 14383d14c5d2SYehuda Sadeh 143938d6453cSSage Weil dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); 14403d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 14416194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 14426f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 14436194ea89SSage Weil p = rb_next(p); 1444ab60b16dSAlex Elder 1445ab60b16dSAlex Elder /* 1446ab60b16dSAlex Elder * For linger requests that have not yet been 1447ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1448ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1449ab60b16dSAlex Elder * the request before re-registering it as a linger 1450ab60b16dSAlex Elder * request to ensure the __map_request() below 1451ab60b16dSAlex Elder * will decide it needs to be sent. 1452ab60b16dSAlex Elder */ 1453ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1454ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1455ab60b16dSAlex Elder req, req->r_tid, 1456ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 1457ab60b16dSAlex Elder __unregister_request(osdc, req); 1458ab60b16dSAlex Elder __register_linger_request(osdc, req); 1459ab60b16dSAlex Elder continue; 1460ab60b16dSAlex Elder } 1461ab60b16dSAlex Elder 146238d6453cSSage Weil err = __map_request(osdc, req, force_resend); 14636f6c7006SSage Weil if (err < 0) 14646f6c7006SSage Weil continue; /* error */ 14656f6c7006SSage Weil if (req->r_osd == NULL) { 14666f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 14676f6c7006SSage Weil needmap++; /* request a newer map */ 14686f6c7006SSage Weil } else if (err > 0) { 14696194ea89SSage Weil if (!req->r_linger) { 14706194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 14716194ea89SSage Weil req->r_tid, 14726f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 14736f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 14746f6c7006SSage Weil } 14756f6c7006SSage Weil } 14766194ea89SSage Weil } 1477a40c4f10SYehuda Sadeh 1478a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 1479a40c4f10SYehuda Sadeh r_linger_item) { 1480a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 1481a40c4f10SYehuda Sadeh 148238d6453cSSage Weil err = __map_request(osdc, req, force_resend); 1483ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 1484a40c4f10SYehuda Sadeh if (err == 0) 1485a40c4f10SYehuda Sadeh continue; /* no change and no osd was specified */ 1486a40c4f10SYehuda Sadeh if (err < 0) 1487a40c4f10SYehuda Sadeh continue; /* hrm! */ 1488a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 1489a40c4f10SYehuda Sadeh dout("tid %llu maps to no valid osd\n", req->r_tid); 1490a40c4f10SYehuda Sadeh needmap++; /* request a newer map */ 1491a40c4f10SYehuda Sadeh continue; 1492a40c4f10SYehuda Sadeh } 1493a40c4f10SYehuda Sadeh 1494a40c4f10SYehuda Sadeh dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, 1495a40c4f10SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 1496a40c4f10SYehuda Sadeh __register_request(osdc, req); 1497c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 1498a40c4f10SYehuda Sadeh } 14993d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 15003d14c5d2SYehuda Sadeh 15013d14c5d2SYehuda Sadeh if (needmap) { 15023d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 15033d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 15043d14c5d2SYehuda Sadeh } 1505e6d50f67SAlex Elder reset_changed_osds(osdc); 15063d14c5d2SYehuda Sadeh } 15076f6c7006SSage Weil 15086f6c7006SSage Weil 15093d14c5d2SYehuda Sadeh /* 15103d14c5d2SYehuda Sadeh * Process updated osd map. 15113d14c5d2SYehuda Sadeh * 15123d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 15133d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 15143d14c5d2SYehuda Sadeh * off to different OSDs as needed. 15153d14c5d2SYehuda Sadeh */ 15163d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 15173d14c5d2SYehuda Sadeh { 15183d14c5d2SYehuda Sadeh void *p, *end, *next; 15193d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 15203d14c5d2SYehuda Sadeh u32 epoch; 15213d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 15223d14c5d2SYehuda Sadeh int err; 15233d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 15243d14c5d2SYehuda Sadeh 15253d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 15263d14c5d2SYehuda Sadeh p = msg->front.iov_base; 15273d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 15283d14c5d2SYehuda Sadeh 15293d14c5d2SYehuda Sadeh /* verify fsid */ 15303d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 15313d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 15323d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 15333d14c5d2SYehuda Sadeh return; 15343d14c5d2SYehuda Sadeh 15353d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 15363d14c5d2SYehuda Sadeh 15373d14c5d2SYehuda Sadeh /* incremental maps */ 15383d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 15393d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 15403d14c5d2SYehuda Sadeh while (nr_maps > 0) { 15413d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 15423d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 15433d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 15443d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 15453d14c5d2SYehuda Sadeh next = p + maplen; 15463d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 15473d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 15483d14c5d2SYehuda Sadeh epoch, maplen); 15493d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 15503d14c5d2SYehuda Sadeh osdc->osdmap, 155115d9882cSAlex Elder &osdc->client->msgr); 15523d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 15533d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 15543d14c5d2SYehuda Sadeh goto bad; 15553d14c5d2SYehuda Sadeh } 15563d14c5d2SYehuda Sadeh BUG_ON(!newmap); 15573d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 15583d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 15593d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 15603d14c5d2SYehuda Sadeh } 156138d6453cSSage Weil kick_requests(osdc, 0); 15623d14c5d2SYehuda Sadeh } else { 15633d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 15643d14c5d2SYehuda Sadeh epoch, maplen); 15653d14c5d2SYehuda Sadeh } 15663d14c5d2SYehuda Sadeh p = next; 15673d14c5d2SYehuda Sadeh nr_maps--; 15683d14c5d2SYehuda Sadeh } 15693d14c5d2SYehuda Sadeh if (newmap) 15703d14c5d2SYehuda Sadeh goto done; 15713d14c5d2SYehuda Sadeh 15723d14c5d2SYehuda Sadeh /* full maps */ 15733d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 15743d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 15753d14c5d2SYehuda Sadeh while (nr_maps) { 15763d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 15773d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 15783d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 15793d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 15803d14c5d2SYehuda Sadeh if (nr_maps > 1) { 15813d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 15823d14c5d2SYehuda Sadeh epoch, maplen); 15833d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 15843d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 15853d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 15863d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 15873d14c5d2SYehuda Sadeh } else { 158838d6453cSSage Weil int skipped_map = 0; 158938d6453cSSage Weil 15903d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 15913d14c5d2SYehuda Sadeh newmap = osdmap_decode(&p, p+maplen); 15923d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 15933d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 15943d14c5d2SYehuda Sadeh goto bad; 15953d14c5d2SYehuda Sadeh } 15963d14c5d2SYehuda Sadeh BUG_ON(!newmap); 15973d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 15983d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 159938d6453cSSage Weil if (oldmap) { 160038d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 160138d6453cSSage Weil skipped_map = 1; 16023d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 160338d6453cSSage Weil } 160438d6453cSSage Weil kick_requests(osdc, skipped_map); 16053d14c5d2SYehuda Sadeh } 16063d14c5d2SYehuda Sadeh p += maplen; 16073d14c5d2SYehuda Sadeh nr_maps--; 16083d14c5d2SYehuda Sadeh } 16093d14c5d2SYehuda Sadeh 16103d14c5d2SYehuda Sadeh done: 16113d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 16123d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 1613cd634fb6SSage Weil 1614cd634fb6SSage Weil /* 1615cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 1616cd634fb6SSage Weil * we find out when we are no longer full and stop returning 1617cd634fb6SSage Weil * ENOSPC. 1618cd634fb6SSage Weil */ 1619cd634fb6SSage Weil if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) 1620cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 1621cd634fb6SSage Weil 1622f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 1623f9d25199SAlex Elder __send_queued(osdc); 1624f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 16253d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16263d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 16273d14c5d2SYehuda Sadeh return; 16283d14c5d2SYehuda Sadeh 16293d14c5d2SYehuda Sadeh bad: 16303d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 16313d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 16323d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 16333d14c5d2SYehuda Sadeh return; 16343d14c5d2SYehuda Sadeh } 16353d14c5d2SYehuda Sadeh 16363d14c5d2SYehuda Sadeh /* 1637a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 1638a40c4f10SYehuda Sadeh * 1639a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 1640a40c4f10SYehuda Sadeh */ 1641a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 1642a40c4f10SYehuda Sadeh { 1643a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 1644a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 1645a40c4f10SYehuda Sadeh 1646a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 1647a40c4f10SYehuda Sadeh kfree(event); 1648a40c4f10SYehuda Sadeh } 1649a40c4f10SYehuda Sadeh 1650a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 1651a40c4f10SYehuda Sadeh { 1652a40c4f10SYehuda Sadeh kref_get(&event->kref); 1653a40c4f10SYehuda Sadeh } 1654a40c4f10SYehuda Sadeh 1655a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 1656a40c4f10SYehuda Sadeh { 1657a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 1658a40c4f10SYehuda Sadeh } 1659a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 1660a40c4f10SYehuda Sadeh 1661a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 1662a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 1663a40c4f10SYehuda Sadeh { 1664a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1665a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1666a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1667a40c4f10SYehuda Sadeh 1668a40c4f10SYehuda Sadeh while (*p) { 1669a40c4f10SYehuda Sadeh parent = *p; 1670a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1671a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 1672a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1673a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 1674a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1675a40c4f10SYehuda Sadeh else 1676a40c4f10SYehuda Sadeh BUG(); 1677a40c4f10SYehuda Sadeh } 1678a40c4f10SYehuda Sadeh 1679a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 1680a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 1681a40c4f10SYehuda Sadeh } 1682a40c4f10SYehuda Sadeh 1683a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 1684a40c4f10SYehuda Sadeh u64 cookie) 1685a40c4f10SYehuda Sadeh { 1686a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1687a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1688a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1689a40c4f10SYehuda Sadeh 1690a40c4f10SYehuda Sadeh while (*p) { 1691a40c4f10SYehuda Sadeh parent = *p; 1692a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1693a40c4f10SYehuda Sadeh if (cookie < event->cookie) 1694a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1695a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 1696a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1697a40c4f10SYehuda Sadeh else 1698a40c4f10SYehuda Sadeh return event; 1699a40c4f10SYehuda Sadeh } 1700a40c4f10SYehuda Sadeh return NULL; 1701a40c4f10SYehuda Sadeh } 1702a40c4f10SYehuda Sadeh 1703a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 1704a40c4f10SYehuda Sadeh { 1705a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1706a40c4f10SYehuda Sadeh 1707a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 1708a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 1709a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 1710a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1711a40c4f10SYehuda Sadeh } else { 1712a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 1713a40c4f10SYehuda Sadeh } 1714a40c4f10SYehuda Sadeh } 1715a40c4f10SYehuda Sadeh 1716a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 1717a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 17183c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 1719a40c4f10SYehuda Sadeh { 1720a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1721a40c4f10SYehuda Sadeh 1722a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 1723a40c4f10SYehuda Sadeh if (!event) 1724a40c4f10SYehuda Sadeh return -ENOMEM; 1725a40c4f10SYehuda Sadeh 1726a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 1727a40c4f10SYehuda Sadeh event->cb = event_cb; 17283c663bbdSAlex Elder event->one_shot = 0; 1729a40c4f10SYehuda Sadeh event->data = data; 1730a40c4f10SYehuda Sadeh event->osdc = osdc; 1731a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 17323ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 1733a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 1734a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 1735a40c4f10SYehuda Sadeh 1736a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1737a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 1738a40c4f10SYehuda Sadeh __insert_event(osdc, event); 1739a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1740a40c4f10SYehuda Sadeh 1741a40c4f10SYehuda Sadeh *pevent = event; 1742a40c4f10SYehuda Sadeh return 0; 1743a40c4f10SYehuda Sadeh } 1744a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 1745a40c4f10SYehuda Sadeh 1746a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 1747a40c4f10SYehuda Sadeh { 1748a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1749a40c4f10SYehuda Sadeh 1750a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 1751a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1752a40c4f10SYehuda Sadeh __remove_event(event); 1753a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1754a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 1755a40c4f10SYehuda Sadeh } 1756a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 1757a40c4f10SYehuda Sadeh 1758a40c4f10SYehuda Sadeh 1759a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 1760a40c4f10SYehuda Sadeh { 1761a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 1762a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 1763a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 1764a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 1765a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 1766a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 1767a40c4f10SYehuda Sadeh 1768a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 1769a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 1770a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 1771a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1772a40c4f10SYehuda Sadeh kfree(event_work); 1773a40c4f10SYehuda Sadeh } 1774a40c4f10SYehuda Sadeh 1775a40c4f10SYehuda Sadeh 1776a40c4f10SYehuda Sadeh /* 1777a40c4f10SYehuda Sadeh * Process osd watch notifications 1778a40c4f10SYehuda Sadeh */ 17793c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 17803c663bbdSAlex Elder struct ceph_msg *msg) 1781a40c4f10SYehuda Sadeh { 1782a40c4f10SYehuda Sadeh void *p, *end; 1783a40c4f10SYehuda Sadeh u8 proto_ver; 1784a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 1785a40c4f10SYehuda Sadeh u8 opcode; 1786a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1787a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 1788a40c4f10SYehuda Sadeh 1789a40c4f10SYehuda Sadeh p = msg->front.iov_base; 1790a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 1791a40c4f10SYehuda Sadeh 1792a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 1793a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 1794a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 1795a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 1796a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 1797a40c4f10SYehuda Sadeh 1798a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1799a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 1800a40c4f10SYehuda Sadeh if (event) { 18013c663bbdSAlex Elder BUG_ON(event->one_shot); 1802a40c4f10SYehuda Sadeh get_event(event); 1803a40c4f10SYehuda Sadeh } 1804a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1805a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 1806a40c4f10SYehuda Sadeh cookie, ver, event); 1807a40c4f10SYehuda Sadeh if (event) { 1808a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 1809a40c4f10SYehuda Sadeh if (!event_work) { 1810a40c4f10SYehuda Sadeh dout("ERROR: could not allocate event_work\n"); 1811a40c4f10SYehuda Sadeh goto done_err; 1812a40c4f10SYehuda Sadeh } 18136b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 1814a40c4f10SYehuda Sadeh event_work->event = event; 1815a40c4f10SYehuda Sadeh event_work->ver = ver; 1816a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 1817a40c4f10SYehuda Sadeh event_work->opcode = opcode; 1818a40c4f10SYehuda Sadeh if (!queue_work(osdc->notify_wq, &event_work->work)) { 1819a40c4f10SYehuda Sadeh dout("WARNING: failed to queue notify event work\n"); 1820a40c4f10SYehuda Sadeh goto done_err; 1821a40c4f10SYehuda Sadeh } 1822a40c4f10SYehuda Sadeh } 1823a40c4f10SYehuda Sadeh 1824a40c4f10SYehuda Sadeh return; 1825a40c4f10SYehuda Sadeh 1826a40c4f10SYehuda Sadeh done_err: 1827a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1828a40c4f10SYehuda Sadeh return; 1829a40c4f10SYehuda Sadeh 1830a40c4f10SYehuda Sadeh bad: 1831a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 1832a40c4f10SYehuda Sadeh return; 1833a40c4f10SYehuda Sadeh } 1834a40c4f10SYehuda Sadeh 183570636773SAlex Elder static void ceph_osdc_msg_data_set(struct ceph_msg *msg, 183670636773SAlex Elder struct ceph_osd_data *osd_data) 183770636773SAlex Elder { 183870636773SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 183970636773SAlex Elder BUG_ON(osd_data->length > (u64) SIZE_MAX); 184070636773SAlex Elder if (osd_data->length) 184170636773SAlex Elder ceph_msg_data_set_pages(msg, osd_data->pages, 184270636773SAlex Elder osd_data->length, osd_data->alignment); 18439a5e6d09SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 18449a5e6d09SAlex Elder BUG_ON(!osd_data->pagelist->length); 18459a5e6d09SAlex Elder ceph_msg_data_set_pagelist(msg, osd_data->pagelist); 184670636773SAlex Elder #ifdef CONFIG_BLOCK 184770636773SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 1848a1930804SAlex Elder ceph_msg_data_set_bio(msg, osd_data->bio, osd_data->bio_length); 184970636773SAlex Elder #endif 185070636773SAlex Elder } else { 185170636773SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 185270636773SAlex Elder } 185370636773SAlex Elder } 185470636773SAlex Elder 1855a40c4f10SYehuda Sadeh /* 18563d14c5d2SYehuda Sadeh * Register request, send initial attempt. 18573d14c5d2SYehuda Sadeh */ 18583d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 18593d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 18603d14c5d2SYehuda Sadeh bool nofail) 18613d14c5d2SYehuda Sadeh { 18623d14c5d2SYehuda Sadeh int rc = 0; 18633d14c5d2SYehuda Sadeh 186470636773SAlex Elder /* Set up response incoming data and request outgoing data fields */ 18650fff87ecSAlex Elder 186670636773SAlex Elder ceph_osdc_msg_data_set(req->r_reply, &req->r_data_in); 186770636773SAlex Elder ceph_osdc_msg_data_set(req->r_request, &req->r_data_out); 18683d14c5d2SYehuda Sadeh 18693d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 18703d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1871dc4b870cSAlex Elder __register_request(osdc, req); 187292451b49SAlex Elder WARN_ON(req->r_sent); 187338d6453cSSage Weil rc = __map_request(osdc, req, 0); 18749d6fcb08SSage Weil if (rc < 0) { 18759d6fcb08SSage Weil if (nofail) { 18769d6fcb08SSage Weil dout("osdc_start_request failed map, " 18779d6fcb08SSage Weil " will retry %lld\n", req->r_tid); 18789d6fcb08SSage Weil rc = 0; 18799d6fcb08SSage Weil } 1880234af26fSDan Carpenter goto out_unlock; 18819d6fcb08SSage Weil } 18826f6c7006SSage Weil if (req->r_osd == NULL) { 18836f6c7006SSage Weil dout("send_request %p no up osds in pg\n", req); 18846f6c7006SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 18856f6c7006SSage Weil } else { 18867e2766a1SAlex Elder __send_queued(osdc); 188756e925b6SSage Weil } 18883d14c5d2SYehuda Sadeh rc = 0; 1889234af26fSDan Carpenter out_unlock: 18903d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 18913d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 18923d14c5d2SYehuda Sadeh return rc; 18933d14c5d2SYehuda Sadeh } 18943d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 18953d14c5d2SYehuda Sadeh 18963d14c5d2SYehuda Sadeh /* 18973d14c5d2SYehuda Sadeh * wait for a request to complete 18983d14c5d2SYehuda Sadeh */ 18993d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 19003d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 19013d14c5d2SYehuda Sadeh { 19023d14c5d2SYehuda Sadeh int rc; 19033d14c5d2SYehuda Sadeh 19043d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 19053d14c5d2SYehuda Sadeh if (rc < 0) { 19063d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19073d14c5d2SYehuda Sadeh __cancel_request(req); 19083d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 19093d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 191025845472SSage Weil complete_request(req); 19113d14c5d2SYehuda Sadeh dout("wait_request tid %llu canceled/timed out\n", req->r_tid); 19123d14c5d2SYehuda Sadeh return rc; 19133d14c5d2SYehuda Sadeh } 19143d14c5d2SYehuda Sadeh 19153d14c5d2SYehuda Sadeh dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); 19163d14c5d2SYehuda Sadeh return req->r_result; 19173d14c5d2SYehuda Sadeh } 19183d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 19193d14c5d2SYehuda Sadeh 19203d14c5d2SYehuda Sadeh /* 19213d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 19223d14c5d2SYehuda Sadeh */ 19233d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 19243d14c5d2SYehuda Sadeh { 19253d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 19263d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 19273d14c5d2SYehuda Sadeh 19283d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19293d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 19303d14c5d2SYehuda Sadeh while (1) { 19313d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 19323d14c5d2SYehuda Sadeh if (!req) 19333d14c5d2SYehuda Sadeh break; 19343d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 19353d14c5d2SYehuda Sadeh break; 19363d14c5d2SYehuda Sadeh 19373d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 19383d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 19393d14c5d2SYehuda Sadeh continue; 19403d14c5d2SYehuda Sadeh 19413d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 19423d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19433d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 19443d14c5d2SYehuda Sadeh req->r_tid, last_tid); 19453d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 19463d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19473d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 19483d14c5d2SYehuda Sadeh } 19493d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19503d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 19513d14c5d2SYehuda Sadeh } 19523d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 19533d14c5d2SYehuda Sadeh 19543d14c5d2SYehuda Sadeh /* 19553d14c5d2SYehuda Sadeh * init, shutdown 19563d14c5d2SYehuda Sadeh */ 19573d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 19583d14c5d2SYehuda Sadeh { 19593d14c5d2SYehuda Sadeh int err; 19603d14c5d2SYehuda Sadeh 19613d14c5d2SYehuda Sadeh dout("init\n"); 19623d14c5d2SYehuda Sadeh osdc->client = client; 19633d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 19643d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 19653d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 19663d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 19673d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 19683d14c5d2SYehuda Sadeh osdc->last_tid = 0; 19693d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 19703d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 19713d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 19723d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 19736f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 19746f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 1975a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 19763d14c5d2SYehuda Sadeh osdc->num_requests = 0; 19773d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 19783d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 1979a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 1980a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 1981a40c4f10SYehuda Sadeh osdc->event_count = 0; 19823d14c5d2SYehuda Sadeh 19833d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 19843d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 19853d14c5d2SYehuda Sadeh 19863d14c5d2SYehuda Sadeh err = -ENOMEM; 19873d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 19883d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 19893d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 19903d14c5d2SYehuda Sadeh goto out; 19913d14c5d2SYehuda Sadeh 1992d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 1993d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 19943d14c5d2SYehuda Sadeh "osd_op"); 19953d14c5d2SYehuda Sadeh if (err < 0) 19963d14c5d2SYehuda Sadeh goto out_mempool; 1997d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 19983d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 19993d14c5d2SYehuda Sadeh "osd_op_reply"); 20003d14c5d2SYehuda Sadeh if (err < 0) 20013d14c5d2SYehuda Sadeh goto out_msgpool; 2002a40c4f10SYehuda Sadeh 2003a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2004a40c4f10SYehuda Sadeh if (IS_ERR(osdc->notify_wq)) { 2005a40c4f10SYehuda Sadeh err = PTR_ERR(osdc->notify_wq); 2006a40c4f10SYehuda Sadeh osdc->notify_wq = NULL; 2007a40c4f10SYehuda Sadeh goto out_msgpool; 2008a40c4f10SYehuda Sadeh } 20093d14c5d2SYehuda Sadeh return 0; 20103d14c5d2SYehuda Sadeh 20113d14c5d2SYehuda Sadeh out_msgpool: 20123d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 20133d14c5d2SYehuda Sadeh out_mempool: 20143d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 20153d14c5d2SYehuda Sadeh out: 20163d14c5d2SYehuda Sadeh return err; 20173d14c5d2SYehuda Sadeh } 20183d14c5d2SYehuda Sadeh 20193d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 20203d14c5d2SYehuda Sadeh { 2021a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2022a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 20233d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 20243d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 20253d14c5d2SYehuda Sadeh if (osdc->osdmap) { 20263d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 20273d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 20283d14c5d2SYehuda Sadeh } 2029aca420bcSSage Weil remove_all_osds(osdc); 20303d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 20313d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 20323d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 20333d14c5d2SYehuda Sadeh } 20343d14c5d2SYehuda Sadeh 20353d14c5d2SYehuda Sadeh /* 20363d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 20373d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 20383d14c5d2SYehuda Sadeh */ 20393d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 20403d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 20413d14c5d2SYehuda Sadeh u64 off, u64 *plen, 20423d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2043b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 20443d14c5d2SYehuda Sadeh { 20453d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 20460fff87ecSAlex Elder struct ceph_osd_data *osd_data; 2047acead002SAlex Elder struct ceph_osd_req_op op; 20483d14c5d2SYehuda Sadeh int rc = 0; 20493d14c5d2SYehuda Sadeh 20503d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 20513d14c5d2SYehuda Sadeh vino.snap, off, *plen); 2052acead002SAlex Elder req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1, &op, 20533d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2054acead002SAlex Elder NULL, truncate_seq, truncate_size, 2055153e5167SAlex Elder false); 20566816282dSSage Weil if (IS_ERR(req)) 20576816282dSSage Weil return PTR_ERR(req); 20583d14c5d2SYehuda Sadeh 2059acead002SAlex Elder ceph_osdc_build_request(req, off, 1, &op, NULL, vino.snap, NULL); 2060acead002SAlex Elder 20613d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 20620fff87ecSAlex Elder 20630fff87ecSAlex Elder osd_data = &req->r_data_in; 20640fff87ecSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 20650fff87ecSAlex Elder osd_data->pages = pages; 2066e0c59487SAlex Elder osd_data->length = *plen; 20670fff87ecSAlex Elder osd_data->alignment = page_align; 20683d14c5d2SYehuda Sadeh 2069e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 2070e0c59487SAlex Elder off, *plen, osd_data->length, page_align); 20713d14c5d2SYehuda Sadeh 20723d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 20733d14c5d2SYehuda Sadeh if (!rc) 20743d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 20753d14c5d2SYehuda Sadeh 20763d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 20773d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 20783d14c5d2SYehuda Sadeh return rc; 20793d14c5d2SYehuda Sadeh } 20803d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 20813d14c5d2SYehuda Sadeh 20823d14c5d2SYehuda Sadeh /* 20833d14c5d2SYehuda Sadeh * do a synchronous write on N pages 20843d14c5d2SYehuda Sadeh */ 20853d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 20863d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 20873d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 20883d14c5d2SYehuda Sadeh u64 off, u64 len, 20893d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 20903d14c5d2SYehuda Sadeh struct timespec *mtime, 209124808826SAlex Elder struct page **pages, int num_pages) 20923d14c5d2SYehuda Sadeh { 20933d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 20940fff87ecSAlex Elder struct ceph_osd_data *osd_data; 2095acead002SAlex Elder struct ceph_osd_req_op op; 20963d14c5d2SYehuda Sadeh int rc = 0; 2097b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 20983d14c5d2SYehuda Sadeh 2099acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 2100acead002SAlex Elder req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1, &op, 21013d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 210224808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2103acead002SAlex Elder snapc, truncate_seq, truncate_size, 2104153e5167SAlex Elder true); 21056816282dSSage Weil if (IS_ERR(req)) 21066816282dSSage Weil return PTR_ERR(req); 21073d14c5d2SYehuda Sadeh 2108acead002SAlex Elder ceph_osdc_build_request(req, off, 1, &op, snapc, CEPH_NOSNAP, mtime); 2109acead002SAlex Elder 21103d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 21110fff87ecSAlex Elder osd_data = &req->r_data_out; 21120fff87ecSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 21130fff87ecSAlex Elder osd_data->pages = pages; 2114e0c59487SAlex Elder osd_data->length = len; 21150fff87ecSAlex Elder osd_data->alignment = page_align; 2116e0c59487SAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, osd_data->length); 21173d14c5d2SYehuda Sadeh 211887f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 21193d14c5d2SYehuda Sadeh if (!rc) 21203d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 21213d14c5d2SYehuda Sadeh 21223d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 21233d14c5d2SYehuda Sadeh if (rc == 0) 21243d14c5d2SYehuda Sadeh rc = len; 21253d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 21263d14c5d2SYehuda Sadeh return rc; 21273d14c5d2SYehuda Sadeh } 21283d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 21293d14c5d2SYehuda Sadeh 21303d14c5d2SYehuda Sadeh /* 21313d14c5d2SYehuda Sadeh * handle incoming message 21323d14c5d2SYehuda Sadeh */ 21333d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 21343d14c5d2SYehuda Sadeh { 21353d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 21363d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 21373d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 21383d14c5d2SYehuda Sadeh 21393d14c5d2SYehuda Sadeh if (!osd) 21403d14c5d2SYehuda Sadeh goto out; 21413d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 21423d14c5d2SYehuda Sadeh 21433d14c5d2SYehuda Sadeh switch (type) { 21443d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 21453d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 21463d14c5d2SYehuda Sadeh break; 21473d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 21483d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 21493d14c5d2SYehuda Sadeh break; 2150a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2151a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2152a40c4f10SYehuda Sadeh break; 21533d14c5d2SYehuda Sadeh 21543d14c5d2SYehuda Sadeh default: 21553d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 21563d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 21573d14c5d2SYehuda Sadeh } 21583d14c5d2SYehuda Sadeh out: 21593d14c5d2SYehuda Sadeh ceph_msg_put(msg); 21603d14c5d2SYehuda Sadeh } 21613d14c5d2SYehuda Sadeh 21623d14c5d2SYehuda Sadeh /* 21633d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 21643d14c5d2SYehuda Sadeh * pages. 21653d14c5d2SYehuda Sadeh */ 21663d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 21673d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 21683d14c5d2SYehuda Sadeh int *skip) 21693d14c5d2SYehuda Sadeh { 21703d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 21713d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 21723d14c5d2SYehuda Sadeh struct ceph_msg *m; 21733d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 21743d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 21753d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 21763d14c5d2SYehuda Sadeh u64 tid; 21773d14c5d2SYehuda Sadeh 21783d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 21793d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 21803d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 21813d14c5d2SYehuda Sadeh if (!req) { 21823d14c5d2SYehuda Sadeh *skip = 1; 21833d14c5d2SYehuda Sadeh m = NULL; 2184756a16a5SSage Weil dout("get_reply unknown tid %llu from osd%d\n", tid, 21853d14c5d2SYehuda Sadeh osd->o_osd); 21863d14c5d2SYehuda Sadeh goto out; 21873d14c5d2SYehuda Sadeh } 21883d14c5d2SYehuda Sadeh 2189ace6d3a9SAlex Elder if (req->r_reply->con) 21908921d114SAlex Elder dout("%s revoking msg %p from old con %p\n", __func__, 2191ace6d3a9SAlex Elder req->r_reply, req->r_reply->con); 21928921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 21933d14c5d2SYehuda Sadeh 21943d14c5d2SYehuda Sadeh if (front > req->r_reply->front.iov_len) { 21953d14c5d2SYehuda Sadeh pr_warning("get_reply front %d > preallocated %d\n", 21963d14c5d2SYehuda Sadeh front, (int)req->r_reply->front.iov_len); 2197b61c2763SSage Weil m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); 21983d14c5d2SYehuda Sadeh if (!m) 21993d14c5d2SYehuda Sadeh goto out; 22003d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 22013d14c5d2SYehuda Sadeh req->r_reply = m; 22023d14c5d2SYehuda Sadeh } 22033d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 22043d14c5d2SYehuda Sadeh 22053d14c5d2SYehuda Sadeh if (data_len > 0) { 22060fff87ecSAlex Elder struct ceph_osd_data *osd_data = &req->r_data_in; 22070fff87ecSAlex Elder 22080fff87ecSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 22090fff87ecSAlex Elder if (osd_data->pages && 2210e0c59487SAlex Elder unlikely(osd_data->length < data_len)) { 22112ac2b7a6SAlex Elder 2212e0c59487SAlex Elder pr_warning("tid %lld reply has %d bytes " 2213e0c59487SAlex Elder "we had only %llu bytes ready\n", 2214e0c59487SAlex Elder tid, data_len, osd_data->length); 22153d14c5d2SYehuda Sadeh *skip = 1; 22163d14c5d2SYehuda Sadeh ceph_msg_put(m); 22173d14c5d2SYehuda Sadeh m = NULL; 22183d14c5d2SYehuda Sadeh goto out; 22193d14c5d2SYehuda Sadeh } 22203d14c5d2SYehuda Sadeh } 22212ac2b7a6SAlex Elder } 22223d14c5d2SYehuda Sadeh *skip = 0; 22233d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 22243d14c5d2SYehuda Sadeh 22253d14c5d2SYehuda Sadeh out: 22263d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 22273d14c5d2SYehuda Sadeh return m; 22283d14c5d2SYehuda Sadeh 22293d14c5d2SYehuda Sadeh } 22303d14c5d2SYehuda Sadeh 22313d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 22323d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 22333d14c5d2SYehuda Sadeh int *skip) 22343d14c5d2SYehuda Sadeh { 22353d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22363d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 22373d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 22383d14c5d2SYehuda Sadeh 22391c20f2d2SAlex Elder *skip = 0; 22403d14c5d2SYehuda Sadeh switch (type) { 22413d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2242a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2243b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 22443d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 22453d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 22463d14c5d2SYehuda Sadeh default: 22473d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 22483d14c5d2SYehuda Sadeh osd->o_osd); 22493d14c5d2SYehuda Sadeh *skip = 1; 22503d14c5d2SYehuda Sadeh return NULL; 22513d14c5d2SYehuda Sadeh } 22523d14c5d2SYehuda Sadeh } 22533d14c5d2SYehuda Sadeh 22543d14c5d2SYehuda Sadeh /* 22553d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 22563d14c5d2SYehuda Sadeh */ 22573d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 22583d14c5d2SYehuda Sadeh { 22593d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22603d14c5d2SYehuda Sadeh if (get_osd(osd)) 22613d14c5d2SYehuda Sadeh return con; 22623d14c5d2SYehuda Sadeh return NULL; 22633d14c5d2SYehuda Sadeh } 22643d14c5d2SYehuda Sadeh 22653d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 22663d14c5d2SYehuda Sadeh { 22673d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22683d14c5d2SYehuda Sadeh put_osd(osd); 22693d14c5d2SYehuda Sadeh } 22703d14c5d2SYehuda Sadeh 22713d14c5d2SYehuda Sadeh /* 22723d14c5d2SYehuda Sadeh * authentication 22733d14c5d2SYehuda Sadeh */ 2274a3530df3SAlex Elder /* 2275a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2276a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2277a3530df3SAlex Elder */ 2278a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 22798f43fb53SAlex Elder int *proto, int force_new) 22803d14c5d2SYehuda Sadeh { 22813d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 22823d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 22833d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 228474f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 22853d14c5d2SYehuda Sadeh 228674f1869fSAlex Elder if (force_new && auth->authorizer) { 228727859f97SSage Weil ceph_auth_destroy_authorizer(ac, auth->authorizer); 228874f1869fSAlex Elder auth->authorizer = NULL; 22893d14c5d2SYehuda Sadeh } 229027859f97SSage Weil if (!auth->authorizer) { 229127859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2292a3530df3SAlex Elder auth); 22933d14c5d2SYehuda Sadeh if (ret) 2294a3530df3SAlex Elder return ERR_PTR(ret); 229527859f97SSage Weil } else { 229627859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 22970bed9b5cSSage Weil auth); 22980bed9b5cSSage Weil if (ret) 22990bed9b5cSSage Weil return ERR_PTR(ret); 23003d14c5d2SYehuda Sadeh } 23013d14c5d2SYehuda Sadeh *proto = ac->protocol; 230274f1869fSAlex Elder 2303a3530df3SAlex Elder return auth; 23043d14c5d2SYehuda Sadeh } 23053d14c5d2SYehuda Sadeh 23063d14c5d2SYehuda Sadeh 23073d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 23083d14c5d2SYehuda Sadeh { 23093d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23103d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23113d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 23123d14c5d2SYehuda Sadeh 231327859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 23143d14c5d2SYehuda Sadeh } 23153d14c5d2SYehuda Sadeh 23163d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 23173d14c5d2SYehuda Sadeh { 23183d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23193d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23203d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 23213d14c5d2SYehuda Sadeh 232227859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 23233d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 23243d14c5d2SYehuda Sadeh } 23253d14c5d2SYehuda Sadeh 23263d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 23273d14c5d2SYehuda Sadeh .get = get_osd_con, 23283d14c5d2SYehuda Sadeh .put = put_osd_con, 23293d14c5d2SYehuda Sadeh .dispatch = dispatch, 23303d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 23313d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 23323d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 23333d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 23343d14c5d2SYehuda Sadeh .fault = osd_reset, 23353d14c5d2SYehuda Sadeh }; 2336