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 82c54d47bfSAlex Elder static void ceph_osd_data_init(struct ceph_osd_data *osd_data) 83c54d47bfSAlex Elder { 84c54d47bfSAlex Elder memset(osd_data, 0, sizeof (*osd_data)); 85c54d47bfSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_NONE; 86c54d47bfSAlex Elder } 87c54d47bfSAlex Elder 8843bfe5deSAlex Elder void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, 8943bfe5deSAlex Elder struct page **pages, u64 length, u32 alignment, 9043bfe5deSAlex Elder bool pages_from_pool, bool own_pages) 9143bfe5deSAlex Elder { 9243bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 9343bfe5deSAlex Elder osd_data->pages = pages; 9443bfe5deSAlex Elder osd_data->length = length; 9543bfe5deSAlex Elder osd_data->alignment = alignment; 9643bfe5deSAlex Elder osd_data->pages_from_pool = pages_from_pool; 9743bfe5deSAlex Elder osd_data->own_pages = own_pages; 9843bfe5deSAlex Elder } 9943bfe5deSAlex Elder EXPORT_SYMBOL(ceph_osd_data_pages_init); 10043bfe5deSAlex Elder 10143bfe5deSAlex Elder void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, 10243bfe5deSAlex Elder struct ceph_pagelist *pagelist) 10343bfe5deSAlex Elder { 10443bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; 10543bfe5deSAlex Elder osd_data->pagelist = pagelist; 10643bfe5deSAlex Elder } 10743bfe5deSAlex Elder EXPORT_SYMBOL(ceph_osd_data_pagelist_init); 10843bfe5deSAlex Elder 10943bfe5deSAlex Elder #ifdef CONFIG_BLOCK 11043bfe5deSAlex Elder void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 11143bfe5deSAlex Elder struct bio *bio, size_t bio_length) 11243bfe5deSAlex Elder { 11343bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_BIO; 11443bfe5deSAlex Elder osd_data->bio = bio; 11543bfe5deSAlex Elder osd_data->bio_length = bio_length; 11643bfe5deSAlex Elder } 11743bfe5deSAlex Elder EXPORT_SYMBOL(ceph_osd_data_bio_init); 11843bfe5deSAlex Elder #endif /* CONFIG_BLOCK */ 11943bfe5deSAlex Elder 12023c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 12123c08a9cSAlex Elder { 12223c08a9cSAlex Elder switch (osd_data->type) { 12323c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 12423c08a9cSAlex Elder return 0; 12523c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 12623c08a9cSAlex Elder return osd_data->length; 12723c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 12823c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 12923c08a9cSAlex Elder #ifdef CONFIG_BLOCK 13023c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 13123c08a9cSAlex Elder return (u64)osd_data->bio_length; 13223c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 13323c08a9cSAlex Elder default: 13423c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 13523c08a9cSAlex Elder return 0; 13623c08a9cSAlex Elder } 13723c08a9cSAlex Elder } 13823c08a9cSAlex Elder 139c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 140c54d47bfSAlex Elder { 141c54d47bfSAlex Elder if (osd_data->type != CEPH_OSD_DATA_TYPE_PAGES) 142c54d47bfSAlex Elder return; 143c54d47bfSAlex Elder 144c54d47bfSAlex Elder if (osd_data->own_pages) { 145c54d47bfSAlex Elder int num_pages; 146c54d47bfSAlex Elder 147c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 148c54d47bfSAlex Elder (u64)osd_data->length); 149c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 150c54d47bfSAlex Elder } 151c54d47bfSAlex Elder } 152c54d47bfSAlex Elder 1533d14c5d2SYehuda Sadeh /* 1543d14c5d2SYehuda Sadeh * requests 1553d14c5d2SYehuda Sadeh */ 1563d14c5d2SYehuda Sadeh void ceph_osdc_release_request(struct kref *kref) 1573d14c5d2SYehuda Sadeh { 158c54d47bfSAlex Elder struct ceph_osd_request *req; 1593d14c5d2SYehuda Sadeh 160c54d47bfSAlex Elder req = container_of(kref, struct ceph_osd_request, r_kref); 1613d14c5d2SYehuda Sadeh if (req->r_request) 1623d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 163ace6d3a9SAlex Elder if (req->r_reply) { 1648921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 165ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 166ace6d3a9SAlex Elder } 1670fff87ecSAlex Elder 168c54d47bfSAlex Elder ceph_osd_data_release(&req->r_data_in); 169c54d47bfSAlex Elder ceph_osd_data_release(&req->r_data_out); 1700fff87ecSAlex Elder 1713d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 1723d14c5d2SYehuda Sadeh if (req->r_mempool) 1733d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 1743d14c5d2SYehuda Sadeh else 1753d14c5d2SYehuda Sadeh kfree(req); 1763d14c5d2SYehuda Sadeh } 1773d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_release_request); 1783d14c5d2SYehuda Sadeh 1793d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 1803d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 1811b83bef2SSage Weil unsigned int num_ops, 1823d14c5d2SYehuda Sadeh bool use_mempool, 18354a54007SAlex Elder gfp_t gfp_flags) 1843d14c5d2SYehuda Sadeh { 1853d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1863d14c5d2SYehuda Sadeh struct ceph_msg *msg; 1871b83bef2SSage Weil size_t msg_size; 1883d14c5d2SYehuda Sadeh 18979528734SAlex Elder BUILD_BUG_ON(CEPH_OSD_MAX_OP > U16_MAX); 19079528734SAlex Elder BUG_ON(num_ops > CEPH_OSD_MAX_OP); 19179528734SAlex Elder 1921b83bef2SSage Weil msg_size = 4 + 4 + 8 + 8 + 4+8; 1931b83bef2SSage Weil msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 1941b83bef2SSage Weil msg_size += 1 + 8 + 4 + 4; /* pg_t */ 1951b83bef2SSage Weil msg_size += 4 + MAX_OBJ_NAME_SIZE; 1961b83bef2SSage Weil msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); 1971b83bef2SSage Weil msg_size += 8; /* snapid */ 1981b83bef2SSage Weil msg_size += 8; /* snap_seq */ 1991b83bef2SSage Weil msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ 2001b83bef2SSage Weil msg_size += 4; 2013d14c5d2SYehuda Sadeh 2023d14c5d2SYehuda Sadeh if (use_mempool) { 2033d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 2043d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 2053d14c5d2SYehuda Sadeh } else { 2063d14c5d2SYehuda Sadeh req = kzalloc(sizeof(*req), gfp_flags); 2073d14c5d2SYehuda Sadeh } 2083d14c5d2SYehuda Sadeh if (req == NULL) 2093d14c5d2SYehuda Sadeh return NULL; 2103d14c5d2SYehuda Sadeh 2113d14c5d2SYehuda Sadeh req->r_osdc = osdc; 2123d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 21379528734SAlex Elder req->r_num_ops = num_ops; 2143d14c5d2SYehuda Sadeh 2153d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 2163d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 2173d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 218a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 2193d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 220a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 221a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_osd); 222935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 223cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 224cd43045cSSage Weil 2253d14c5d2SYehuda Sadeh /* create reply message */ 2263d14c5d2SYehuda Sadeh if (use_mempool) 2273d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 2283d14c5d2SYehuda Sadeh else 2293d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 230b61c2763SSage Weil OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 2313d14c5d2SYehuda Sadeh if (!msg) { 2323d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 2333d14c5d2SYehuda Sadeh return NULL; 2343d14c5d2SYehuda Sadeh } 2353d14c5d2SYehuda Sadeh req->r_reply = msg; 2363d14c5d2SYehuda Sadeh 237c54d47bfSAlex Elder ceph_osd_data_init(&req->r_data_in); 238c54d47bfSAlex Elder ceph_osd_data_init(&req->r_data_out); 239d50b409fSSage Weil 2403d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 2413d14c5d2SYehuda Sadeh if (use_mempool) 2423d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 2433d14c5d2SYehuda Sadeh else 244b61c2763SSage Weil msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 2453d14c5d2SYehuda Sadeh if (!msg) { 2463d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 2473d14c5d2SYehuda Sadeh return NULL; 2483d14c5d2SYehuda Sadeh } 2493d14c5d2SYehuda Sadeh 2503d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 2513d14c5d2SYehuda Sadeh 2523d14c5d2SYehuda Sadeh req->r_request = msg; 2533d14c5d2SYehuda Sadeh 2543d14c5d2SYehuda Sadeh return req; 2553d14c5d2SYehuda Sadeh } 2563d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 2573d14c5d2SYehuda Sadeh 258a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 259a8dd0a37SAlex Elder { 260a8dd0a37SAlex Elder switch (opcode) { 261a8dd0a37SAlex Elder case CEPH_OSD_OP_READ: 262a8dd0a37SAlex Elder case CEPH_OSD_OP_STAT: 263a8dd0a37SAlex Elder case CEPH_OSD_OP_MAPEXT: 264a8dd0a37SAlex Elder case CEPH_OSD_OP_MASKTRUNC: 265a8dd0a37SAlex Elder case CEPH_OSD_OP_SPARSE_READ: 266a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY: 267a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY_ACK: 268a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_VER: 269a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITE: 270a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITEFULL: 271a8dd0a37SAlex Elder case CEPH_OSD_OP_TRUNCATE: 272a8dd0a37SAlex Elder case CEPH_OSD_OP_ZERO: 273a8dd0a37SAlex Elder case CEPH_OSD_OP_DELETE: 274a8dd0a37SAlex Elder case CEPH_OSD_OP_APPEND: 275a8dd0a37SAlex Elder case CEPH_OSD_OP_STARTSYNC: 276a8dd0a37SAlex Elder case CEPH_OSD_OP_SETTRUNC: 277a8dd0a37SAlex Elder case CEPH_OSD_OP_TRIMTRUNC: 278a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPUP: 279a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPPUT: 280a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPGET: 281a8dd0a37SAlex Elder case CEPH_OSD_OP_CREATE: 282a8dd0a37SAlex Elder case CEPH_OSD_OP_ROLLBACK: 283a8dd0a37SAlex Elder case CEPH_OSD_OP_WATCH: 284a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETKEYS: 285a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALS: 286a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETHEADER: 287a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALSBYKEYS: 288a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETVALS: 289a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETHEADER: 290a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPCLEAR: 291a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPRMKEYS: 292a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAP_CMP: 293a8dd0a37SAlex Elder case CEPH_OSD_OP_CLONERANGE: 294a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_SRC_VERSION: 295a8dd0a37SAlex Elder case CEPH_OSD_OP_SRC_CMPXATTR: 296a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTR: 297a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTRS: 298a8dd0a37SAlex Elder case CEPH_OSD_OP_CMPXATTR: 299a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTR: 300a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTRS: 301a8dd0a37SAlex Elder case CEPH_OSD_OP_RESETXATTRS: 302a8dd0a37SAlex Elder case CEPH_OSD_OP_RMXATTR: 303a8dd0a37SAlex Elder case CEPH_OSD_OP_PULL: 304a8dd0a37SAlex Elder case CEPH_OSD_OP_PUSH: 305a8dd0a37SAlex Elder case CEPH_OSD_OP_BALANCEREADS: 306a8dd0a37SAlex Elder case CEPH_OSD_OP_UNBALANCEREADS: 307a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB: 308a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_RESERVE: 309a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_UNRESERVE: 310a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_STOP: 311a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_MAP: 312a8dd0a37SAlex Elder case CEPH_OSD_OP_WRLOCK: 313a8dd0a37SAlex Elder case CEPH_OSD_OP_WRUNLOCK: 314a8dd0a37SAlex Elder case CEPH_OSD_OP_RDLOCK: 315a8dd0a37SAlex Elder case CEPH_OSD_OP_RDUNLOCK: 316a8dd0a37SAlex Elder case CEPH_OSD_OP_UPLOCK: 317a8dd0a37SAlex Elder case CEPH_OSD_OP_DNLOCK: 318a8dd0a37SAlex Elder case CEPH_OSD_OP_CALL: 319a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS: 320a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS_FILTER: 321a8dd0a37SAlex Elder return true; 322a8dd0a37SAlex Elder default: 323a8dd0a37SAlex Elder return false; 324a8dd0a37SAlex Elder } 325a8dd0a37SAlex Elder } 326a8dd0a37SAlex Elder 32733803f33SAlex Elder /* 32833803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 32933803f33SAlex Elder * other information associated with them. It also serves as a 33033803f33SAlex Elder * common init routine for all the other init functions, below. 33133803f33SAlex Elder */ 33233803f33SAlex Elder void osd_req_op_init(struct ceph_osd_req_op *op, u16 opcode) 33333803f33SAlex Elder { 33433803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 33533803f33SAlex Elder 33633803f33SAlex Elder memset(op, 0, sizeof (*op)); 33733803f33SAlex Elder 33833803f33SAlex Elder op->op = opcode; 33933803f33SAlex Elder } 34033803f33SAlex Elder 34133803f33SAlex Elder void osd_req_op_extent_init(struct ceph_osd_req_op *op, u16 opcode, 34233803f33SAlex Elder u64 offset, u64 length, 34333803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 34433803f33SAlex Elder { 34533803f33SAlex Elder size_t payload_len = 0; 34633803f33SAlex Elder 34733803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); 34833803f33SAlex Elder 34933803f33SAlex Elder osd_req_op_init(op, opcode); 35033803f33SAlex Elder 35133803f33SAlex Elder op->extent.offset = offset; 35233803f33SAlex Elder op->extent.length = length; 35333803f33SAlex Elder op->extent.truncate_size = truncate_size; 35433803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 35533803f33SAlex Elder if (opcode == CEPH_OSD_OP_WRITE) 35633803f33SAlex Elder payload_len += length; 35733803f33SAlex Elder 35833803f33SAlex Elder op->payload_len = payload_len; 35933803f33SAlex Elder } 36033803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 36133803f33SAlex Elder 362e5975c7cSAlex Elder void osd_req_op_extent_update(struct ceph_osd_req_op *op, u64 length) 363e5975c7cSAlex Elder { 364e5975c7cSAlex Elder u64 previous = op->extent.length; 365e5975c7cSAlex Elder 366e5975c7cSAlex Elder if (length == previous) 367e5975c7cSAlex Elder return; /* Nothing to do */ 368e5975c7cSAlex Elder BUG_ON(length > previous); 369e5975c7cSAlex Elder 370e5975c7cSAlex Elder op->extent.length = length; 371e5975c7cSAlex Elder op->payload_len -= previous - length; 372e5975c7cSAlex Elder } 373e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 374e5975c7cSAlex Elder 3758c042b0dSAlex Elder void osd_req_op_extent_osd_data(struct ceph_osd_req_op *op, 3768c042b0dSAlex Elder struct ceph_osd_data *osd_data) 3778c042b0dSAlex Elder { 3788c042b0dSAlex Elder op->extent.osd_data = osd_data; 3798c042b0dSAlex Elder } 3808c042b0dSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data); 3818c042b0dSAlex Elder 38233803f33SAlex Elder void osd_req_op_cls_init(struct ceph_osd_req_op *op, u16 opcode, 38333803f33SAlex Elder const char *class, const char *method, 38433803f33SAlex Elder const void *request_data, size_t request_data_size) 38533803f33SAlex Elder { 38633803f33SAlex Elder size_t payload_len = 0; 38733803f33SAlex Elder size_t size; 38833803f33SAlex Elder 38933803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 39033803f33SAlex Elder 39133803f33SAlex Elder osd_req_op_init(op, opcode); 39233803f33SAlex Elder 39333803f33SAlex Elder op->cls.class_name = class; 39433803f33SAlex Elder size = strlen(class); 39533803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 39633803f33SAlex Elder op->cls.class_len = size; 39733803f33SAlex Elder payload_len += size; 39833803f33SAlex Elder 39933803f33SAlex Elder op->cls.method_name = method; 40033803f33SAlex Elder size = strlen(method); 40133803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 40233803f33SAlex Elder op->cls.method_len = size; 40333803f33SAlex Elder payload_len += size; 40433803f33SAlex Elder 40554d50649SAlex Elder op->cls.request_data = request_data; 40633803f33SAlex Elder BUG_ON(request_data_size > (size_t) U32_MAX); 40754d50649SAlex Elder op->cls.request_data_len = (u32) request_data_size; 40833803f33SAlex Elder payload_len += request_data_size; 40933803f33SAlex Elder 41033803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 41133803f33SAlex Elder 41233803f33SAlex Elder op->payload_len = payload_len; 41333803f33SAlex Elder } 41433803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 41533803f33SAlex Elder 4168c042b0dSAlex Elder void osd_req_op_cls_response_data(struct ceph_osd_req_op *op, 4178c042b0dSAlex Elder struct ceph_osd_data *response_data) 4188c042b0dSAlex Elder { 4198c042b0dSAlex Elder op->cls.response_data = response_data; 4208c042b0dSAlex Elder } 4218c042b0dSAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data); 4228c042b0dSAlex Elder 42333803f33SAlex Elder void osd_req_op_watch_init(struct ceph_osd_req_op *op, u16 opcode, 42433803f33SAlex Elder u64 cookie, u64 version, int flag) 42533803f33SAlex Elder { 42633803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 42733803f33SAlex Elder 42833803f33SAlex Elder osd_req_op_init(op, opcode); 42933803f33SAlex Elder 43033803f33SAlex Elder op->watch.cookie = cookie; 43133803f33SAlex Elder /* op->watch.ver = version; */ /* XXX 3847 */ 43233803f33SAlex Elder op->watch.ver = cpu_to_le64(version); 43333803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 43433803f33SAlex Elder op->watch.flag = (u8) 1; 43533803f33SAlex Elder } 43633803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 43733803f33SAlex Elder 438175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 43979528734SAlex Elder struct ceph_osd_op *dst, unsigned int which) 4403d14c5d2SYehuda Sadeh { 44179528734SAlex Elder struct ceph_osd_req_op *src; 44254d50649SAlex Elder u64 request_data_len = 0; 44395e072ebSAlex Elder struct ceph_pagelist *pagelist; 444175face2SAlex Elder 44579528734SAlex Elder BUG_ON(which >= req->r_num_ops); 44679528734SAlex Elder src = &req->r_ops[which]; 447a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 448a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 449a8dd0a37SAlex Elder 450a8dd0a37SAlex Elder return 0; 451a8dd0a37SAlex Elder } 4523d14c5d2SYehuda Sadeh 453065a68f9SAlex Elder switch (src->op) { 454fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 455fbfab539SAlex Elder break; 4563d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 4573d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 458175face2SAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 45954d50649SAlex Elder request_data_len = src->extent.length; 460175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 461175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 4623d14c5d2SYehuda Sadeh dst->extent.truncate_size = 4633d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 4643d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 4653d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 4668c042b0dSAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 4678c042b0dSAlex Elder WARN_ON(src->extent.osd_data != &req->r_data_out); 4688c042b0dSAlex Elder else 4698c042b0dSAlex Elder WARN_ON(src->extent.osd_data != &req->r_data_in); 4703d14c5d2SYehuda Sadeh break; 4713d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 47295e072ebSAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 47395e072ebSAlex Elder BUG_ON(!pagelist); 47495e072ebSAlex Elder ceph_pagelist_init(pagelist); 47595e072ebSAlex Elder 4763d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 4773d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 47854d50649SAlex Elder dst->cls.indata_len = cpu_to_le32(src->cls.request_data_len); 47995e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.class_name, 4803d14c5d2SYehuda Sadeh src->cls.class_len); 48195e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.method_name, 4823d14c5d2SYehuda Sadeh src->cls.method_len); 48354d50649SAlex Elder ceph_pagelist_append(pagelist, src->cls.request_data, 48454d50649SAlex Elder src->cls.request_data_len); 48543bfe5deSAlex Elder ceph_osd_data_pagelist_init(&req->r_data_out, pagelist); 4868c042b0dSAlex Elder 4878c042b0dSAlex Elder WARN_ON(src->cls.response_data != &req->r_data_in); 48854d50649SAlex Elder request_data_len = pagelist->length; 4893d14c5d2SYehuda Sadeh break; 4903d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 4913d14c5d2SYehuda Sadeh break; 492a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 493a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 494a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 495a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 496a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 497a40c4f10SYehuda Sadeh break; 4983d14c5d2SYehuda Sadeh default: 4994c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 5008f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 5014c46459cSAlex Elder WARN_ON(1); 502a8dd0a37SAlex Elder 503a8dd0a37SAlex Elder return 0; 5043d14c5d2SYehuda Sadeh } 505a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 5063d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 507175face2SAlex Elder 50854d50649SAlex Elder return request_data_len; 5093d14c5d2SYehuda Sadeh } 5103d14c5d2SYehuda Sadeh 5113d14c5d2SYehuda Sadeh /* 5123d14c5d2SYehuda Sadeh * build new request AND message 5133d14c5d2SYehuda Sadeh * 5143d14c5d2SYehuda Sadeh */ 51579528734SAlex Elder void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, 5164d6b250bSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 517af77f26cSAlex Elder struct timespec *mtime) 5183d14c5d2SYehuda Sadeh { 5193d14c5d2SYehuda Sadeh struct ceph_msg *msg = req->r_request; 5203d14c5d2SYehuda Sadeh void *p; 5211b83bef2SSage Weil size_t msg_size; 5223d14c5d2SYehuda Sadeh int flags = req->r_flags; 523f44246e3SAlex Elder u64 data_len; 52479528734SAlex Elder unsigned int i; 5253d14c5d2SYehuda Sadeh 5261b83bef2SSage Weil req->r_snapid = snap_id; 5273d14c5d2SYehuda Sadeh req->r_snapc = ceph_get_snap_context(snapc); 5283d14c5d2SYehuda Sadeh 5291b83bef2SSage Weil /* encode request */ 5301b83bef2SSage Weil msg->hdr.version = cpu_to_le16(4); 5313d14c5d2SYehuda Sadeh 5321b83bef2SSage Weil p = msg->front.iov_base; 5331b83bef2SSage Weil ceph_encode_32(&p, 1); /* client_inc is always 1 */ 5341b83bef2SSage Weil req->r_request_osdmap_epoch = p; 5351b83bef2SSage Weil p += 4; 5361b83bef2SSage Weil req->r_request_flags = p; 5371b83bef2SSage Weil p += 4; 5381b83bef2SSage Weil if (req->r_flags & CEPH_OSD_FLAG_WRITE) 5391b83bef2SSage Weil ceph_encode_timespec(p, mtime); 5401b83bef2SSage Weil p += sizeof(struct ceph_timespec); 5411b83bef2SSage Weil req->r_request_reassert_version = p; 5421b83bef2SSage Weil p += sizeof(struct ceph_eversion); /* will get filled in */ 5431b83bef2SSage Weil 5441b83bef2SSage Weil /* oloc */ 5451b83bef2SSage Weil ceph_encode_8(&p, 4); 5461b83bef2SSage Weil ceph_encode_8(&p, 4); 5471b83bef2SSage Weil ceph_encode_32(&p, 8 + 4 + 4); 5481b83bef2SSage Weil req->r_request_pool = p; 5491b83bef2SSage Weil p += 8; 5501b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 5511b83bef2SSage Weil ceph_encode_32(&p, 0); /* key len */ 5521b83bef2SSage Weil 5531b83bef2SSage Weil ceph_encode_8(&p, 1); 5541b83bef2SSage Weil req->r_request_pgid = p; 5551b83bef2SSage Weil p += 8 + 4; 5561b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 5571b83bef2SSage Weil 5581b83bef2SSage Weil /* oid */ 5591b83bef2SSage Weil ceph_encode_32(&p, req->r_oid_len); 560af77f26cSAlex Elder memcpy(p, req->r_oid, req->r_oid_len); 5611b83bef2SSage Weil dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); 562af77f26cSAlex Elder p += req->r_oid_len; 5633d14c5d2SYehuda Sadeh 564175face2SAlex Elder /* ops--can imply data */ 56579528734SAlex Elder ceph_encode_16(&p, (u16)req->r_num_ops); 566175face2SAlex Elder data_len = 0; 56779528734SAlex Elder for (i = 0; i < req->r_num_ops; i++) { 56879528734SAlex Elder data_len += osd_req_encode_op(req, p, i); 5691b83bef2SSage Weil p += sizeof(struct ceph_osd_op); 5701b83bef2SSage Weil } 5713d14c5d2SYehuda Sadeh 5721b83bef2SSage Weil /* snaps */ 5731b83bef2SSage Weil ceph_encode_64(&p, req->r_snapid); 5741b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 5751b83bef2SSage Weil ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 5761b83bef2SSage Weil if (req->r_snapc) { 5773d14c5d2SYehuda Sadeh for (i = 0; i < snapc->num_snaps; i++) { 5781b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc->snaps[i]); 5793d14c5d2SYehuda Sadeh } 5803d14c5d2SYehuda Sadeh } 5813d14c5d2SYehuda Sadeh 5821b83bef2SSage Weil req->r_request_attempts = p; 5831b83bef2SSage Weil p += 4; 5841b83bef2SSage Weil 585175face2SAlex Elder /* data */ 5860baa1bd9SAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 5870baa1bd9SAlex Elder u16 data_off; 5880baa1bd9SAlex Elder 5890baa1bd9SAlex Elder /* 5900baa1bd9SAlex Elder * The header "data_off" is a hint to the receiver 5910baa1bd9SAlex Elder * allowing it to align received data into its 5920baa1bd9SAlex Elder * buffers such that there's no need to re-copy 5930baa1bd9SAlex Elder * it before writing it to disk (direct I/O). 5940baa1bd9SAlex Elder */ 5950baa1bd9SAlex Elder data_off = (u16) (off & 0xffff); 5960baa1bd9SAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 5970baa1bd9SAlex Elder } 598f44246e3SAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 599c5c6b19dSSage Weil 6003d14c5d2SYehuda Sadeh BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 6013d14c5d2SYehuda Sadeh msg_size = p - msg->front.iov_base; 6023d14c5d2SYehuda Sadeh msg->front.iov_len = msg_size; 6033d14c5d2SYehuda Sadeh msg->hdr.front_len = cpu_to_le32(msg_size); 6041b83bef2SSage Weil 605acead002SAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 6063d14c5d2SYehuda Sadeh } 6073d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_build_request); 6083d14c5d2SYehuda Sadeh 6093d14c5d2SYehuda Sadeh /* 6103d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 6113d14c5d2SYehuda Sadeh * extent as needed. 6123d14c5d2SYehuda Sadeh * 6133d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 6143d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 6153d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 6163d14c5d2SYehuda Sadeh * 6173d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 6183d14c5d2SYehuda Sadeh * data quickly. 6193d14c5d2SYehuda Sadeh */ 6203d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 6213d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 6223d14c5d2SYehuda Sadeh struct ceph_vino vino, 623acead002SAlex Elder u64 off, u64 *plen, int num_ops, 6243d14c5d2SYehuda Sadeh int opcode, int flags, 6253d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 6263d14c5d2SYehuda Sadeh u32 truncate_seq, 6273d14c5d2SYehuda Sadeh u64 truncate_size, 628153e5167SAlex Elder bool use_mempool) 6293d14c5d2SYehuda Sadeh { 6303d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 6318c042b0dSAlex Elder struct ceph_osd_data *osd_data; 63279528734SAlex Elder struct ceph_osd_req_op *op; 63375d1c941SAlex Elder u64 objnum = 0; 63475d1c941SAlex Elder u64 objoff = 0; 63575d1c941SAlex Elder u64 objlen = 0; 636d18d1e28SAlex Elder u32 object_size; 637d18d1e28SAlex Elder u64 object_base; 6386816282dSSage Weil int r; 6393d14c5d2SYehuda Sadeh 640d18d1e28SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); 6413d14c5d2SYehuda Sadeh 642acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 643ae7ca4a3SAlex Elder GFP_NOFS); 6444ad12621SSage Weil if (!req) 6456816282dSSage Weil return ERR_PTR(-ENOMEM); 6468c042b0dSAlex Elder osd_data = opcode == CEPH_OSD_OP_WRITE ? &req->r_data_out 6478c042b0dSAlex Elder : &req->r_data_in; 64879528734SAlex Elder 649d178a9e7SAlex Elder req->r_flags = flags; 6503d14c5d2SYehuda Sadeh 6513d14c5d2SYehuda Sadeh /* calculate max write size */ 652a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 6533ff5f385SAlex Elder if (r < 0) { 6543ff5f385SAlex Elder ceph_osdc_put_request(req); 6556816282dSSage Weil return ERR_PTR(r); 6563ff5f385SAlex Elder } 657a19dadfbSAlex Elder 658d18d1e28SAlex Elder object_size = le32_to_cpu(layout->fl_object_size); 659d18d1e28SAlex Elder object_base = off - objoff; 660d18d1e28SAlex Elder if (truncate_size <= object_base) { 661d18d1e28SAlex Elder truncate_size = 0; 662d18d1e28SAlex Elder } else { 663d18d1e28SAlex Elder truncate_size -= object_base; 664d18d1e28SAlex Elder if (truncate_size > object_size) 665d18d1e28SAlex Elder truncate_size = object_size; 666d18d1e28SAlex Elder } 667d18d1e28SAlex Elder 66879528734SAlex Elder op = &req->r_ops[0]; 66979528734SAlex Elder osd_req_op_extent_init(op, opcode, objoff, objlen, 670b0270324SAlex Elder truncate_size, truncate_seq); 6718c042b0dSAlex Elder osd_req_op_extent_osd_data(op, osd_data); 6728c042b0dSAlex Elder 673acead002SAlex Elder /* 674acead002SAlex Elder * A second op in the ops array means the caller wants to 675acead002SAlex Elder * also issue a include a 'startsync' command so that the 676acead002SAlex Elder * osd will flush data quickly. 677acead002SAlex Elder */ 678acead002SAlex Elder if (num_ops > 1) 67979528734SAlex Elder osd_req_op_init(++op, CEPH_OSD_OP_STARTSYNC); 680d18d1e28SAlex Elder 6813d14c5d2SYehuda Sadeh req->r_file_layout = *layout; /* keep a copy */ 6823d14c5d2SYehuda Sadeh 68375d1c941SAlex Elder snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", 68475d1c941SAlex Elder vino.ino, objnum); 685dbe0fc41SAlex Elder req->r_oid_len = strlen(req->r_oid); 686dbe0fc41SAlex Elder 6873d14c5d2SYehuda Sadeh return req; 6883d14c5d2SYehuda Sadeh } 6893d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 6903d14c5d2SYehuda Sadeh 6913d14c5d2SYehuda Sadeh /* 6923d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 6933d14c5d2SYehuda Sadeh */ 6943d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 6953d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 6963d14c5d2SYehuda Sadeh { 6973d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 6983d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 6993d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 7003d14c5d2SYehuda Sadeh 7013d14c5d2SYehuda Sadeh while (*p) { 7023d14c5d2SYehuda Sadeh parent = *p; 7033d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 7043d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 7053d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 7063d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 7073d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 7083d14c5d2SYehuda Sadeh else 7093d14c5d2SYehuda Sadeh BUG(); 7103d14c5d2SYehuda Sadeh } 7113d14c5d2SYehuda Sadeh 7123d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 7133d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 7143d14c5d2SYehuda Sadeh } 7153d14c5d2SYehuda Sadeh 7163d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 7173d14c5d2SYehuda Sadeh u64 tid) 7183d14c5d2SYehuda Sadeh { 7193d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 7203d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 7213d14c5d2SYehuda Sadeh 7223d14c5d2SYehuda Sadeh while (n) { 7233d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 7243d14c5d2SYehuda Sadeh if (tid < req->r_tid) 7253d14c5d2SYehuda Sadeh n = n->rb_left; 7263d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 7273d14c5d2SYehuda Sadeh n = n->rb_right; 7283d14c5d2SYehuda Sadeh else 7293d14c5d2SYehuda Sadeh return req; 7303d14c5d2SYehuda Sadeh } 7313d14c5d2SYehuda Sadeh return NULL; 7323d14c5d2SYehuda Sadeh } 7333d14c5d2SYehuda Sadeh 7343d14c5d2SYehuda Sadeh static struct ceph_osd_request * 7353d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 7363d14c5d2SYehuda Sadeh u64 tid) 7373d14c5d2SYehuda Sadeh { 7383d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 7393d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 7403d14c5d2SYehuda Sadeh 7413d14c5d2SYehuda Sadeh while (n) { 7423d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 7433d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 7443d14c5d2SYehuda Sadeh if (!n->rb_left) 7453d14c5d2SYehuda Sadeh return req; 7463d14c5d2SYehuda Sadeh n = n->rb_left; 7473d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 7483d14c5d2SYehuda Sadeh n = n->rb_right; 7493d14c5d2SYehuda Sadeh } else { 7503d14c5d2SYehuda Sadeh return req; 7513d14c5d2SYehuda Sadeh } 7523d14c5d2SYehuda Sadeh } 7533d14c5d2SYehuda Sadeh return NULL; 7543d14c5d2SYehuda Sadeh } 7553d14c5d2SYehuda Sadeh 7566f6c7006SSage Weil /* 7576f6c7006SSage Weil * Resubmit requests pending on the given osd. 7586f6c7006SSage Weil */ 7596f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 7606f6c7006SSage Weil struct ceph_osd *osd) 7616f6c7006SSage Weil { 762a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 763e02493c0SAlex Elder LIST_HEAD(resend); 7646f6c7006SSage Weil int err; 7656f6c7006SSage Weil 7666f6c7006SSage Weil dout("__kick_osd_requests osd%d\n", osd->o_osd); 7676f6c7006SSage Weil err = __reset_osd(osdc, osd); 768685a7555SAlex Elder if (err) 7696f6c7006SSage Weil return; 770e02493c0SAlex Elder /* 771e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 772e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 773e02493c0SAlex Elder * sent in tid order, and that is also the order they're 774e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 775e02493c0SAlex Elder * flight will be found first, followed by all requests that 776e02493c0SAlex Elder * have not yet been sent. And to resend requests while 777e02493c0SAlex Elder * preserving this order we will want to put any sent 778e02493c0SAlex Elder * requests back on the front of the osd client's unsent 779e02493c0SAlex Elder * list. 780e02493c0SAlex Elder * 781e02493c0SAlex Elder * So we build a separate ordered list of already-sent 782e02493c0SAlex Elder * requests for the affected osd and splice it onto the 783e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 784e02493c0SAlex Elder * request that has not yet been sent we're done. Those 785e02493c0SAlex Elder * requests are already sitting right where they belong. 786e02493c0SAlex Elder */ 7876f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 788e02493c0SAlex Elder if (!req->r_sent) 789e02493c0SAlex Elder break; 790e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 791e02493c0SAlex Elder dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, 7926f6c7006SSage Weil osd->o_osd); 793a40c4f10SYehuda Sadeh if (!req->r_linger) 7946f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 7956f6c7006SSage Weil } 796e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 797a40c4f10SYehuda Sadeh 798e02493c0SAlex Elder /* 799e02493c0SAlex Elder * Linger requests are re-registered before sending, which 800e02493c0SAlex Elder * sets up a new tid for each. We add them to the unsent 801e02493c0SAlex Elder * list at the end to keep things in tid order. 802e02493c0SAlex Elder */ 803a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 804a40c4f10SYehuda Sadeh r_linger_osd) { 80577f38e0eSSage Weil /* 80677f38e0eSSage Weil * reregister request prior to unregistering linger so 80777f38e0eSSage Weil * that r_osd is preserved. 80877f38e0eSSage Weil */ 80977f38e0eSSage Weil BUG_ON(!list_empty(&req->r_req_lru_item)); 810a40c4f10SYehuda Sadeh __register_request(osdc, req); 811e02493c0SAlex Elder list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); 812ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 81377f38e0eSSage Weil __unregister_linger_request(osdc, req); 814a40c4f10SYehuda Sadeh dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, 815a40c4f10SYehuda Sadeh osd->o_osd); 816a40c4f10SYehuda Sadeh } 8176f6c7006SSage Weil } 8186f6c7006SSage Weil 8193d14c5d2SYehuda Sadeh /* 8203d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 8213d14c5d2SYehuda Sadeh */ 8223d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 8233d14c5d2SYehuda Sadeh { 8243d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 8253d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 8263d14c5d2SYehuda Sadeh 8273d14c5d2SYehuda Sadeh if (!osd) 8283d14c5d2SYehuda Sadeh return; 8293d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 8303d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 8313d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 83283aff95eSSage Weil mutex_lock(&osdc->request_mutex); 83383aff95eSSage Weil __kick_osd_requests(osdc, osd); 834f9d25199SAlex Elder __send_queued(osdc); 83583aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 8363d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 8373d14c5d2SYehuda Sadeh } 8383d14c5d2SYehuda Sadeh 8393d14c5d2SYehuda Sadeh /* 8403d14c5d2SYehuda Sadeh * Track open sessions with osds. 8413d14c5d2SYehuda Sadeh */ 842e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 8433d14c5d2SYehuda Sadeh { 8443d14c5d2SYehuda Sadeh struct ceph_osd *osd; 8453d14c5d2SYehuda Sadeh 8463d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 8473d14c5d2SYehuda Sadeh if (!osd) 8483d14c5d2SYehuda Sadeh return NULL; 8493d14c5d2SYehuda Sadeh 8503d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 8513d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 852e10006f8SAlex Elder osd->o_osd = onum; 853f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 8543d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 855a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 8563d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 8573d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 8583d14c5d2SYehuda Sadeh 859b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 8603d14c5d2SYehuda Sadeh 8613d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 8623d14c5d2SYehuda Sadeh return osd; 8633d14c5d2SYehuda Sadeh } 8643d14c5d2SYehuda Sadeh 8653d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 8663d14c5d2SYehuda Sadeh { 8673d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 8683d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 8693d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 8703d14c5d2SYehuda Sadeh return osd; 8713d14c5d2SYehuda Sadeh } else { 8723d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 8733d14c5d2SYehuda Sadeh return NULL; 8743d14c5d2SYehuda Sadeh } 8753d14c5d2SYehuda Sadeh } 8763d14c5d2SYehuda Sadeh 8773d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 8783d14c5d2SYehuda Sadeh { 8793d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 8803d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 881a255651dSAlex Elder if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { 8823d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 8833d14c5d2SYehuda Sadeh 88427859f97SSage Weil ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); 8853d14c5d2SYehuda Sadeh kfree(osd); 8863d14c5d2SYehuda Sadeh } 8873d14c5d2SYehuda Sadeh } 8883d14c5d2SYehuda Sadeh 8893d14c5d2SYehuda Sadeh /* 8903d14c5d2SYehuda Sadeh * remove an osd from our map 8913d14c5d2SYehuda Sadeh */ 8923d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 8933d14c5d2SYehuda Sadeh { 8943d14c5d2SYehuda Sadeh dout("__remove_osd %p\n", osd); 8953d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_requests)); 8963d14c5d2SYehuda Sadeh rb_erase(&osd->o_node, &osdc->osds); 8973d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 8983d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 8993d14c5d2SYehuda Sadeh put_osd(osd); 9003d14c5d2SYehuda Sadeh } 9013d14c5d2SYehuda Sadeh 902aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 903aca420bcSSage Weil { 904048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 905aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 906aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 907aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 908aca420bcSSage Weil struct ceph_osd, o_node); 909aca420bcSSage Weil __remove_osd(osdc, osd); 910aca420bcSSage Weil } 911aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 912aca420bcSSage Weil } 913aca420bcSSage Weil 9143d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 9153d14c5d2SYehuda Sadeh struct ceph_osd *osd) 9163d14c5d2SYehuda Sadeh { 9173d14c5d2SYehuda Sadeh dout("__move_osd_to_lru %p\n", osd); 9183d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 9193d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 9203d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 9213d14c5d2SYehuda Sadeh } 9223d14c5d2SYehuda Sadeh 9233d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 9243d14c5d2SYehuda Sadeh { 9253d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 9263d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 9273d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 9283d14c5d2SYehuda Sadeh } 9293d14c5d2SYehuda Sadeh 930aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 9313d14c5d2SYehuda Sadeh { 9323d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 9333d14c5d2SYehuda Sadeh 9343d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 9353d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 9363d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 937aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 9383d14c5d2SYehuda Sadeh break; 9393d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 9403d14c5d2SYehuda Sadeh } 9413d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 9423d14c5d2SYehuda Sadeh } 9433d14c5d2SYehuda Sadeh 9443d14c5d2SYehuda Sadeh /* 9453d14c5d2SYehuda Sadeh * reset osd connect 9463d14c5d2SYehuda Sadeh */ 9473d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 9483d14c5d2SYehuda Sadeh { 949c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 9503d14c5d2SYehuda Sadeh 9513d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 952a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 953a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 9543d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 955c3acb181SAlex Elder 956c3acb181SAlex Elder return -ENODEV; 957c3acb181SAlex Elder } 958c3acb181SAlex Elder 959c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 960c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 9613d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 962c3acb181SAlex Elder struct ceph_osd_request *req; 963c3acb181SAlex Elder 9643d14c5d2SYehuda Sadeh dout(" osd addr hasn't changed and connection never opened," 9653d14c5d2SYehuda Sadeh " letting msgr retry"); 9663d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 9673d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 9683d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 969c3acb181SAlex Elder 970c3acb181SAlex Elder return -EAGAIN; 9713d14c5d2SYehuda Sadeh } 972c3acb181SAlex Elder 973c3acb181SAlex Elder ceph_con_close(&osd->o_con); 974c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 975c3acb181SAlex Elder osd->o_incarnation++; 976c3acb181SAlex Elder 977c3acb181SAlex Elder return 0; 9783d14c5d2SYehuda Sadeh } 9793d14c5d2SYehuda Sadeh 9803d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 9813d14c5d2SYehuda Sadeh { 9823d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 9833d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 9843d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 9853d14c5d2SYehuda Sadeh 986aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 9873d14c5d2SYehuda Sadeh while (*p) { 9883d14c5d2SYehuda Sadeh parent = *p; 9893d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 9903d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 9913d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 9923d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 9933d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 9943d14c5d2SYehuda Sadeh else 9953d14c5d2SYehuda Sadeh BUG(); 9963d14c5d2SYehuda Sadeh } 9973d14c5d2SYehuda Sadeh 9983d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 9993d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 10003d14c5d2SYehuda Sadeh } 10013d14c5d2SYehuda Sadeh 10023d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 10033d14c5d2SYehuda Sadeh { 10043d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10053d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 10063d14c5d2SYehuda Sadeh 10073d14c5d2SYehuda Sadeh while (n) { 10083d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 10093d14c5d2SYehuda Sadeh if (o < osd->o_osd) 10103d14c5d2SYehuda Sadeh n = n->rb_left; 10113d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 10123d14c5d2SYehuda Sadeh n = n->rb_right; 10133d14c5d2SYehuda Sadeh else 10143d14c5d2SYehuda Sadeh return osd; 10153d14c5d2SYehuda Sadeh } 10163d14c5d2SYehuda Sadeh return NULL; 10173d14c5d2SYehuda Sadeh } 10183d14c5d2SYehuda Sadeh 10193d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 10203d14c5d2SYehuda Sadeh { 10213d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 10223d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 10233d14c5d2SYehuda Sadeh } 10243d14c5d2SYehuda Sadeh 10253d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 10263d14c5d2SYehuda Sadeh { 10273d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 10283d14c5d2SYehuda Sadeh } 10293d14c5d2SYehuda Sadeh 10303d14c5d2SYehuda Sadeh /* 10313d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 10323d14c5d2SYehuda Sadeh * the timeout event. 10333d14c5d2SYehuda Sadeh */ 1034a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 10353d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 10363d14c5d2SYehuda Sadeh { 10373d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 10383d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 103977f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 10403d14c5d2SYehuda Sadeh __insert_request(osdc, req); 10413d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 10423d14c5d2SYehuda Sadeh osdc->num_requests++; 10433d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 10443d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 10453d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 10463d14c5d2SYehuda Sadeh } 1047a40c4f10SYehuda Sadeh } 1048a40c4f10SYehuda Sadeh 10493d14c5d2SYehuda Sadeh /* 10503d14c5d2SYehuda Sadeh * called under osdc->request_mutex 10513d14c5d2SYehuda Sadeh */ 10523d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 10533d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 10543d14c5d2SYehuda Sadeh { 105535f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 105635f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 105735f9f8a0SSage Weil req, req->r_tid); 105835f9f8a0SSage Weil return; 105935f9f8a0SSage Weil } 106035f9f8a0SSage Weil 10613d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 10623d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 10633d14c5d2SYehuda Sadeh osdc->num_requests--; 10643d14c5d2SYehuda Sadeh 10653d14c5d2SYehuda Sadeh if (req->r_osd) { 10663d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 10676740a845SAlex Elder ceph_msg_revoke(req->r_request); 10683d14c5d2SYehuda Sadeh 10693d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1070a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 1071a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 1072a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 10733d14c5d2SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 1074a40c4f10SYehuda Sadeh } 1075fbdb9190SSage Weil if (list_empty(&req->r_linger_item)) 10763d14c5d2SYehuda Sadeh req->r_osd = NULL; 10773d14c5d2SYehuda Sadeh } 10783d14c5d2SYehuda Sadeh 10797d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 10803d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 10813d14c5d2SYehuda Sadeh 10823d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 10833d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 10843d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 10853d14c5d2SYehuda Sadeh } 10863d14c5d2SYehuda Sadeh } 10873d14c5d2SYehuda Sadeh 10883d14c5d2SYehuda Sadeh /* 10893d14c5d2SYehuda Sadeh * Cancel a previously queued request message 10903d14c5d2SYehuda Sadeh */ 10913d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 10923d14c5d2SYehuda Sadeh { 10933d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 10946740a845SAlex Elder ceph_msg_revoke(req->r_request); 10953d14c5d2SYehuda Sadeh req->r_sent = 0; 10963d14c5d2SYehuda Sadeh } 10973d14c5d2SYehuda Sadeh } 10983d14c5d2SYehuda Sadeh 1099a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1100a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1101a40c4f10SYehuda Sadeh { 1102a40c4f10SYehuda Sadeh dout("__register_linger_request %p\n", req); 1103a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 11046194ea89SSage Weil if (req->r_osd) 11056194ea89SSage Weil list_add_tail(&req->r_linger_osd, 11066194ea89SSage Weil &req->r_osd->o_linger_requests); 1107a40c4f10SYehuda Sadeh } 1108a40c4f10SYehuda Sadeh 1109a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1110a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1111a40c4f10SYehuda Sadeh { 1112a40c4f10SYehuda Sadeh dout("__unregister_linger_request %p\n", req); 1113a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 111461c74035SAlex Elder if (req->r_osd) { 1115a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_osd); 1116a40c4f10SYehuda Sadeh 1117a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 1118a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 1119a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 1120a40c4f10SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 1121a40c4f10SYehuda Sadeh } 1122fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1123a40c4f10SYehuda Sadeh req->r_osd = NULL; 1124a40c4f10SYehuda Sadeh } 1125a40c4f10SYehuda Sadeh } 1126a40c4f10SYehuda Sadeh 1127a40c4f10SYehuda Sadeh void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, 1128a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1129a40c4f10SYehuda Sadeh { 1130a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1131a40c4f10SYehuda Sadeh if (req->r_linger) { 1132a40c4f10SYehuda Sadeh __unregister_linger_request(osdc, req); 1133a40c4f10SYehuda Sadeh ceph_osdc_put_request(req); 1134a40c4f10SYehuda Sadeh } 1135a40c4f10SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1136a40c4f10SYehuda Sadeh } 1137a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); 1138a40c4f10SYehuda Sadeh 1139a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1140a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1141a40c4f10SYehuda Sadeh { 1142a40c4f10SYehuda Sadeh if (!req->r_linger) { 1143a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1144a40c4f10SYehuda Sadeh req->r_linger = 1; 1145a40c4f10SYehuda Sadeh /* 1146a40c4f10SYehuda Sadeh * caller is now responsible for calling 1147a40c4f10SYehuda Sadeh * unregister_linger_request 1148a40c4f10SYehuda Sadeh */ 1149a40c4f10SYehuda Sadeh ceph_osdc_get_request(req); 1150a40c4f10SYehuda Sadeh } 1151a40c4f10SYehuda Sadeh } 1152a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1153a40c4f10SYehuda Sadeh 11543d14c5d2SYehuda Sadeh /* 11553d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 11563d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 115725985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 11586f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 11593d14c5d2SYehuda Sadeh * 11603d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 11613d14c5d2SYehuda Sadeh * 11623d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 11633d14c5d2SYehuda Sadeh */ 11646f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 116538d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 11663d14c5d2SYehuda Sadeh { 11675b191d99SSage Weil struct ceph_pg pgid; 11683d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 11693d14c5d2SYehuda Sadeh int o = -1, num = 0; 11703d14c5d2SYehuda Sadeh int err; 11713d14c5d2SYehuda Sadeh 11726f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 117341766f87SAlex Elder err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, 117441766f87SAlex Elder ceph_file_layout_pg_pool(req->r_file_layout)); 11756f6c7006SSage Weil if (err) { 11766f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 11773d14c5d2SYehuda Sadeh return err; 11786f6c7006SSage Weil } 11793d14c5d2SYehuda Sadeh req->r_pgid = pgid; 11803d14c5d2SYehuda Sadeh 11813d14c5d2SYehuda Sadeh err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); 11823d14c5d2SYehuda Sadeh if (err > 0) { 11833d14c5d2SYehuda Sadeh o = acting[0]; 11843d14c5d2SYehuda Sadeh num = err; 11853d14c5d2SYehuda Sadeh } 11863d14c5d2SYehuda Sadeh 118738d6453cSSage Weil if ((!force_resend && 118838d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 11893d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 11903d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 11913d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 11923d14c5d2SYehuda Sadeh (req->r_osd == NULL && o == -1)) 11933d14c5d2SYehuda Sadeh return 0; /* no change */ 11943d14c5d2SYehuda Sadeh 11955b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 11965b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 11973d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 11983d14c5d2SYehuda Sadeh 11993d14c5d2SYehuda Sadeh /* record full pg acting set */ 12003d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 12013d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 12023d14c5d2SYehuda Sadeh 12033d14c5d2SYehuda Sadeh if (req->r_osd) { 12043d14c5d2SYehuda Sadeh __cancel_request(req); 12053d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 12063d14c5d2SYehuda Sadeh req->r_osd = NULL; 12073d14c5d2SYehuda Sadeh } 12083d14c5d2SYehuda Sadeh 12093d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 12103d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 12113d14c5d2SYehuda Sadeh err = -ENOMEM; 1212e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 12136f6c7006SSage Weil if (!req->r_osd) { 12146f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 12153d14c5d2SYehuda Sadeh goto out; 12166f6c7006SSage Weil } 12173d14c5d2SYehuda Sadeh 12186f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 12193d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 12203d14c5d2SYehuda Sadeh 1221b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1222b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1223b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 12243d14c5d2SYehuda Sadeh } 12253d14c5d2SYehuda Sadeh 12263d14c5d2SYehuda Sadeh if (req->r_osd) { 12273d14c5d2SYehuda Sadeh __remove_osd_from_lru(req->r_osd); 1228ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1229ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 12306f6c7006SSage Weil } else { 1231ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 12323d14c5d2SYehuda Sadeh } 12333d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 12343d14c5d2SYehuda Sadeh 12353d14c5d2SYehuda Sadeh out: 12363d14c5d2SYehuda Sadeh return err; 12373d14c5d2SYehuda Sadeh } 12383d14c5d2SYehuda Sadeh 12393d14c5d2SYehuda Sadeh /* 12403d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 12413d14c5d2SYehuda Sadeh */ 124256e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 12433d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12443d14c5d2SYehuda Sadeh { 12451b83bef2SSage Weil void *p; 12463d14c5d2SYehuda Sadeh 12471b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 12481b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 12491b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 12503d14c5d2SYehuda Sadeh 12511b83bef2SSage Weil /* fill in message content that changes each time we send it */ 12521b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 12531b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 12541b83bef2SSage Weil put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); 12551b83bef2SSage Weil p = req->r_request_pgid; 12561b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 12571b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 12581b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 12591b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 12601b83bef2SSage Weil sizeof(req->r_reassert_version)); 12612169aea6SSage Weil 12623d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 12633d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 12643d14c5d2SYehuda Sadeh 12653d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 12663d14c5d2SYehuda Sadeh ceph_con_send(&req->r_osd->o_con, req->r_request); 12673d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 12683d14c5d2SYehuda Sadeh } 12693d14c5d2SYehuda Sadeh 12703d14c5d2SYehuda Sadeh /* 12716f6c7006SSage Weil * Send any requests in the queue (req_unsent). 12726f6c7006SSage Weil */ 1273f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 12746f6c7006SSage Weil { 12756f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 12766f6c7006SSage Weil 1277f9d25199SAlex Elder dout("__send_queued\n"); 1278f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 12796f6c7006SSage Weil __send_request(osdc, req); 12806f6c7006SSage Weil } 12816f6c7006SSage Weil 12826f6c7006SSage Weil /* 12833d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 12843d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 12853d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 12863d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 12873d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 12883d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 12893d14c5d2SYehuda Sadeh * there are no open requests). 12903d14c5d2SYehuda Sadeh */ 12913d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 12923d14c5d2SYehuda Sadeh { 12933d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 12943d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 129583aff95eSSage Weil struct ceph_osd_request *req; 12963d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12973d14c5d2SYehuda Sadeh unsigned long keepalive = 12983d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 12993d14c5d2SYehuda Sadeh struct list_head slow_osds; 13003d14c5d2SYehuda Sadeh dout("timeout\n"); 13013d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 13023d14c5d2SYehuda Sadeh 13033d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 13043d14c5d2SYehuda Sadeh 13053d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 13063d14c5d2SYehuda Sadeh 13073d14c5d2SYehuda Sadeh /* 13083d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 13093d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 13103d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 13113d14c5d2SYehuda Sadeh */ 13123d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 13133d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 13143d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 13153d14c5d2SYehuda Sadeh break; 13163d14c5d2SYehuda Sadeh 13173d14c5d2SYehuda Sadeh osd = req->r_osd; 13183d14c5d2SYehuda Sadeh BUG_ON(!osd); 13193d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 13203d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 13213d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 13223d14c5d2SYehuda Sadeh } 13233d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 13243d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 13253d14c5d2SYehuda Sadeh o_keepalive_item); 13263d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 13273d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 13283d14c5d2SYehuda Sadeh } 13293d14c5d2SYehuda Sadeh 13303d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1331f9d25199SAlex Elder __send_queued(osdc); 13323d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 13333d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 13343d14c5d2SYehuda Sadeh } 13353d14c5d2SYehuda Sadeh 13363d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 13373d14c5d2SYehuda Sadeh { 13383d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 13393d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 13403d14c5d2SYehuda Sadeh osds_timeout_work.work); 13413d14c5d2SYehuda Sadeh unsigned long delay = 13423d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 13433d14c5d2SYehuda Sadeh 13443d14c5d2SYehuda Sadeh dout("osds timeout\n"); 13453d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1346aca420bcSSage Weil remove_old_osds(osdc); 13473d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 13483d14c5d2SYehuda Sadeh 13493d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 13503d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 13513d14c5d2SYehuda Sadeh } 13523d14c5d2SYehuda Sadeh 135325845472SSage Weil static void complete_request(struct ceph_osd_request *req) 135425845472SSage Weil { 135525845472SSage Weil if (req->r_safe_callback) 135625845472SSage Weil req->r_safe_callback(req, NULL); 135725845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 135825845472SSage Weil } 135925845472SSage Weil 13603d14c5d2SYehuda Sadeh /* 13613d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 13623d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 13633d14c5d2SYehuda Sadeh */ 13643d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 13653d14c5d2SYehuda Sadeh struct ceph_connection *con) 13663d14c5d2SYehuda Sadeh { 13671b83bef2SSage Weil void *p, *end; 13683d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 13693d14c5d2SYehuda Sadeh u64 tid; 13701b83bef2SSage Weil int object_len; 137179528734SAlex Elder unsigned int numops; 137279528734SAlex Elder int payload_len, flags; 13733d14c5d2SYehuda Sadeh s32 result; 13741b83bef2SSage Weil s32 retry_attempt; 13751b83bef2SSage Weil struct ceph_pg pg; 13761b83bef2SSage Weil int err; 13771b83bef2SSage Weil u32 reassert_epoch; 13781b83bef2SSage Weil u64 reassert_version; 13791b83bef2SSage Weil u32 osdmap_epoch; 13800d5af164SAlex Elder int already_completed; 13819fc6e064SAlex Elder u32 bytes; 138279528734SAlex Elder unsigned int i; 13833d14c5d2SYehuda Sadeh 13843d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 13851b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 13861b83bef2SSage Weil 13871b83bef2SSage Weil p = msg->front.iov_base; 13881b83bef2SSage Weil end = p + msg->front.iov_len; 13891b83bef2SSage Weil 13901b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 13911b83bef2SSage Weil object_len = ceph_decode_32(&p); 13921b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 13931b83bef2SSage Weil p += object_len; 13941b83bef2SSage Weil 1395ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 13961b83bef2SSage Weil if (err) 13973d14c5d2SYehuda Sadeh goto bad; 13981b83bef2SSage Weil 13991b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 14001b83bef2SSage Weil flags = ceph_decode_64(&p); 14011b83bef2SSage Weil result = ceph_decode_32(&p); 14021b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 14031b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 14041b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 14051b83bef2SSage Weil 14063d14c5d2SYehuda Sadeh /* lookup */ 14073d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 14083d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 14093d14c5d2SYehuda Sadeh if (req == NULL) { 14103d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 14118058fd45SAlex Elder goto bad_mutex; 14123d14c5d2SYehuda Sadeh } 14133d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 14141b83bef2SSage Weil 14151b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 14161b83bef2SSage Weil req, result); 14171b83bef2SSage Weil 14181b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 14191b83bef2SSage Weil numops = ceph_decode_32(&p); 14201b83bef2SSage Weil if (numops > CEPH_OSD_MAX_OP) 14211b83bef2SSage Weil goto bad_put; 14221b83bef2SSage Weil if (numops != req->r_num_ops) 14231b83bef2SSage Weil goto bad_put; 14241b83bef2SSage Weil payload_len = 0; 14251b83bef2SSage Weil ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); 14261b83bef2SSage Weil for (i = 0; i < numops; i++) { 14271b83bef2SSage Weil struct ceph_osd_op *op = p; 14281b83bef2SSage Weil int len; 14291b83bef2SSage Weil 14301b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 14311b83bef2SSage Weil req->r_reply_op_len[i] = len; 14321b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 14331b83bef2SSage Weil payload_len += len; 14341b83bef2SSage Weil p += sizeof(*op); 14351b83bef2SSage Weil } 14369fc6e064SAlex Elder bytes = le32_to_cpu(msg->hdr.data_len); 14379fc6e064SAlex Elder if (payload_len != bytes) { 14381b83bef2SSage Weil pr_warning("sum of op payload lens %d != data_len %d", 14399fc6e064SAlex Elder payload_len, bytes); 14401b83bef2SSage Weil goto bad_put; 14411b83bef2SSage Weil } 14421b83bef2SSage Weil 14431b83bef2SSage Weil ceph_decode_need(&p, end, 4 + numops * 4, bad); 14441b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 14451b83bef2SSage Weil for (i = 0; i < numops; i++) 14461b83bef2SSage Weil req->r_reply_op_result[i] = ceph_decode_32(&p); 14473d14c5d2SYehuda Sadeh 14483d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 14493d14c5d2SYehuda Sadeh 14501b83bef2SSage Weil req->r_result = result; 14513d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 14523d14c5d2SYehuda Sadeh bytes); 14533d14c5d2SYehuda Sadeh if (req->r_result == 0) 14543d14c5d2SYehuda Sadeh req->r_result = bytes; 14553d14c5d2SYehuda Sadeh 14563d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 14571b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 14581b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 14593d14c5d2SYehuda Sadeh 14603d14c5d2SYehuda Sadeh req->r_got_reply = 1; 14613d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 14623d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 14633d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14643d14c5d2SYehuda Sadeh goto done; 14653d14c5d2SYehuda Sadeh } 14663d14c5d2SYehuda Sadeh 14673d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 14683d14c5d2SYehuda Sadeh 1469a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1470a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1471a40c4f10SYehuda Sadeh 14723d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 14733d14c5d2SYehuda Sadeh if (result < 0 || 14743d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 14753d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 14763d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 14773d14c5d2SYehuda Sadeh 14780d5af164SAlex Elder already_completed = req->r_completed; 14790d5af164SAlex Elder req->r_completed = 1; 14803d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14810d5af164SAlex Elder if (already_completed) 14820d5af164SAlex Elder goto done; 14833d14c5d2SYehuda Sadeh 14843d14c5d2SYehuda Sadeh if (req->r_callback) 14853d14c5d2SYehuda Sadeh req->r_callback(req, msg); 14863d14c5d2SYehuda Sadeh else 14873d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 14883d14c5d2SYehuda Sadeh 148925845472SSage Weil if (flags & CEPH_OSD_FLAG_ONDISK) 149025845472SSage Weil complete_request(req); 14913d14c5d2SYehuda Sadeh 14923d14c5d2SYehuda Sadeh done: 1493a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 14943d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 14953d14c5d2SYehuda Sadeh return; 14963d14c5d2SYehuda Sadeh 14971b83bef2SSage Weil bad_put: 14981b83bef2SSage Weil ceph_osdc_put_request(req); 14998058fd45SAlex Elder bad_mutex: 15008058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 15013d14c5d2SYehuda Sadeh bad: 15021b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 15031b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 15043d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 15053d14c5d2SYehuda Sadeh } 15063d14c5d2SYehuda Sadeh 15076f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 15083d14c5d2SYehuda Sadeh { 15093d14c5d2SYehuda Sadeh struct rb_node *p, *n; 15103d14c5d2SYehuda Sadeh 15113d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 15126f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 15133d14c5d2SYehuda Sadeh 15143d14c5d2SYehuda Sadeh n = rb_next(p); 15153d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 15163d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 15173d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 15183d14c5d2SYehuda Sadeh osd->o_osd), 15193d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 15203d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 15213d14c5d2SYehuda Sadeh } 15223d14c5d2SYehuda Sadeh } 15233d14c5d2SYehuda Sadeh 15243d14c5d2SYehuda Sadeh /* 15256f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 15266f6c7006SSage Weil * no osd, request a new map. 15273d14c5d2SYehuda Sadeh * 1528e6d50f67SAlex Elder * Caller should hold map_sem for read. 15293d14c5d2SYehuda Sadeh */ 153038d6453cSSage Weil static void kick_requests(struct ceph_osd_client *osdc, int force_resend) 15313d14c5d2SYehuda Sadeh { 1532a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 15336f6c7006SSage Weil struct rb_node *p; 15346f6c7006SSage Weil int needmap = 0; 15356f6c7006SSage Weil int err; 15363d14c5d2SYehuda Sadeh 153738d6453cSSage Weil dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); 15383d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 15396194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 15406f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 15416194ea89SSage Weil p = rb_next(p); 1542ab60b16dSAlex Elder 1543ab60b16dSAlex Elder /* 1544ab60b16dSAlex Elder * For linger requests that have not yet been 1545ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1546ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1547ab60b16dSAlex Elder * the request before re-registering it as a linger 1548ab60b16dSAlex Elder * request to ensure the __map_request() below 1549ab60b16dSAlex Elder * will decide it needs to be sent. 1550ab60b16dSAlex Elder */ 1551ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1552ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1553ab60b16dSAlex Elder req, req->r_tid, 1554ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 1555ab60b16dSAlex Elder __unregister_request(osdc, req); 1556ab60b16dSAlex Elder __register_linger_request(osdc, req); 1557ab60b16dSAlex Elder continue; 1558ab60b16dSAlex Elder } 1559ab60b16dSAlex Elder 156038d6453cSSage Weil err = __map_request(osdc, req, force_resend); 15616f6c7006SSage Weil if (err < 0) 15626f6c7006SSage Weil continue; /* error */ 15636f6c7006SSage Weil if (req->r_osd == NULL) { 15646f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 15656f6c7006SSage Weil needmap++; /* request a newer map */ 15666f6c7006SSage Weil } else if (err > 0) { 15676194ea89SSage Weil if (!req->r_linger) { 15686194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 15696194ea89SSage Weil req->r_tid, 15706f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 15716f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 15726f6c7006SSage Weil } 15736f6c7006SSage Weil } 15746194ea89SSage Weil } 1575a40c4f10SYehuda Sadeh 1576a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 1577a40c4f10SYehuda Sadeh r_linger_item) { 1578a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 1579a40c4f10SYehuda Sadeh 158038d6453cSSage Weil err = __map_request(osdc, req, force_resend); 1581ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 1582a40c4f10SYehuda Sadeh if (err == 0) 1583a40c4f10SYehuda Sadeh continue; /* no change and no osd was specified */ 1584a40c4f10SYehuda Sadeh if (err < 0) 1585a40c4f10SYehuda Sadeh continue; /* hrm! */ 1586a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 1587a40c4f10SYehuda Sadeh dout("tid %llu maps to no valid osd\n", req->r_tid); 1588a40c4f10SYehuda Sadeh needmap++; /* request a newer map */ 1589a40c4f10SYehuda Sadeh continue; 1590a40c4f10SYehuda Sadeh } 1591a40c4f10SYehuda Sadeh 1592a40c4f10SYehuda Sadeh dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, 1593a40c4f10SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 1594a40c4f10SYehuda Sadeh __register_request(osdc, req); 1595c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 1596a40c4f10SYehuda Sadeh } 15973d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 15983d14c5d2SYehuda Sadeh 15993d14c5d2SYehuda Sadeh if (needmap) { 16003d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 16013d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 16023d14c5d2SYehuda Sadeh } 1603e6d50f67SAlex Elder reset_changed_osds(osdc); 16043d14c5d2SYehuda Sadeh } 16056f6c7006SSage Weil 16066f6c7006SSage Weil 16073d14c5d2SYehuda Sadeh /* 16083d14c5d2SYehuda Sadeh * Process updated osd map. 16093d14c5d2SYehuda Sadeh * 16103d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 16113d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 16123d14c5d2SYehuda Sadeh * off to different OSDs as needed. 16133d14c5d2SYehuda Sadeh */ 16143d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 16153d14c5d2SYehuda Sadeh { 16163d14c5d2SYehuda Sadeh void *p, *end, *next; 16173d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 16183d14c5d2SYehuda Sadeh u32 epoch; 16193d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 16203d14c5d2SYehuda Sadeh int err; 16213d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 16223d14c5d2SYehuda Sadeh 16233d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 16243d14c5d2SYehuda Sadeh p = msg->front.iov_base; 16253d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 16263d14c5d2SYehuda Sadeh 16273d14c5d2SYehuda Sadeh /* verify fsid */ 16283d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 16293d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 16303d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 16313d14c5d2SYehuda Sadeh return; 16323d14c5d2SYehuda Sadeh 16333d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 16343d14c5d2SYehuda Sadeh 16353d14c5d2SYehuda Sadeh /* incremental maps */ 16363d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 16373d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 16383d14c5d2SYehuda Sadeh while (nr_maps > 0) { 16393d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 16403d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 16413d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 16423d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 16433d14c5d2SYehuda Sadeh next = p + maplen; 16443d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 16453d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 16463d14c5d2SYehuda Sadeh epoch, maplen); 16473d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 16483d14c5d2SYehuda Sadeh osdc->osdmap, 164915d9882cSAlex Elder &osdc->client->msgr); 16503d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 16513d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 16523d14c5d2SYehuda Sadeh goto bad; 16533d14c5d2SYehuda Sadeh } 16543d14c5d2SYehuda Sadeh BUG_ON(!newmap); 16553d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 16563d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 16573d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 16583d14c5d2SYehuda Sadeh } 165938d6453cSSage Weil kick_requests(osdc, 0); 16603d14c5d2SYehuda Sadeh } else { 16613d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 16623d14c5d2SYehuda Sadeh epoch, maplen); 16633d14c5d2SYehuda Sadeh } 16643d14c5d2SYehuda Sadeh p = next; 16653d14c5d2SYehuda Sadeh nr_maps--; 16663d14c5d2SYehuda Sadeh } 16673d14c5d2SYehuda Sadeh if (newmap) 16683d14c5d2SYehuda Sadeh goto done; 16693d14c5d2SYehuda Sadeh 16703d14c5d2SYehuda Sadeh /* full maps */ 16713d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 16723d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 16733d14c5d2SYehuda Sadeh while (nr_maps) { 16743d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 16753d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 16763d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 16773d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 16783d14c5d2SYehuda Sadeh if (nr_maps > 1) { 16793d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 16803d14c5d2SYehuda Sadeh epoch, maplen); 16813d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 16823d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 16833d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 16843d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 16853d14c5d2SYehuda Sadeh } else { 168638d6453cSSage Weil int skipped_map = 0; 168738d6453cSSage Weil 16883d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 16893d14c5d2SYehuda Sadeh newmap = osdmap_decode(&p, p+maplen); 16903d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 16913d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 16923d14c5d2SYehuda Sadeh goto bad; 16933d14c5d2SYehuda Sadeh } 16943d14c5d2SYehuda Sadeh BUG_ON(!newmap); 16953d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 16963d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 169738d6453cSSage Weil if (oldmap) { 169838d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 169938d6453cSSage Weil skipped_map = 1; 17003d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 170138d6453cSSage Weil } 170238d6453cSSage Weil kick_requests(osdc, skipped_map); 17033d14c5d2SYehuda Sadeh } 17043d14c5d2SYehuda Sadeh p += maplen; 17053d14c5d2SYehuda Sadeh nr_maps--; 17063d14c5d2SYehuda Sadeh } 17073d14c5d2SYehuda Sadeh 17083d14c5d2SYehuda Sadeh done: 17093d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 17103d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 1711cd634fb6SSage Weil 1712cd634fb6SSage Weil /* 1713cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 1714cd634fb6SSage Weil * we find out when we are no longer full and stop returning 1715cd634fb6SSage Weil * ENOSPC. 1716cd634fb6SSage Weil */ 1717cd634fb6SSage Weil if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) 1718cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 1719cd634fb6SSage Weil 1720f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 1721f9d25199SAlex Elder __send_queued(osdc); 1722f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 17233d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 17243d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 17253d14c5d2SYehuda Sadeh return; 17263d14c5d2SYehuda Sadeh 17273d14c5d2SYehuda Sadeh bad: 17283d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 17293d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 17303d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 17313d14c5d2SYehuda Sadeh return; 17323d14c5d2SYehuda Sadeh } 17333d14c5d2SYehuda Sadeh 17343d14c5d2SYehuda Sadeh /* 1735a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 1736a40c4f10SYehuda Sadeh * 1737a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 1738a40c4f10SYehuda Sadeh */ 1739a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 1740a40c4f10SYehuda Sadeh { 1741a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 1742a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 1743a40c4f10SYehuda Sadeh 1744a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 1745a40c4f10SYehuda Sadeh kfree(event); 1746a40c4f10SYehuda Sadeh } 1747a40c4f10SYehuda Sadeh 1748a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 1749a40c4f10SYehuda Sadeh { 1750a40c4f10SYehuda Sadeh kref_get(&event->kref); 1751a40c4f10SYehuda Sadeh } 1752a40c4f10SYehuda Sadeh 1753a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 1754a40c4f10SYehuda Sadeh { 1755a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 1756a40c4f10SYehuda Sadeh } 1757a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 1758a40c4f10SYehuda Sadeh 1759a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 1760a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 1761a40c4f10SYehuda Sadeh { 1762a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1763a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1764a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1765a40c4f10SYehuda Sadeh 1766a40c4f10SYehuda Sadeh while (*p) { 1767a40c4f10SYehuda Sadeh parent = *p; 1768a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1769a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 1770a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1771a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 1772a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1773a40c4f10SYehuda Sadeh else 1774a40c4f10SYehuda Sadeh BUG(); 1775a40c4f10SYehuda Sadeh } 1776a40c4f10SYehuda Sadeh 1777a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 1778a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 1779a40c4f10SYehuda Sadeh } 1780a40c4f10SYehuda Sadeh 1781a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 1782a40c4f10SYehuda Sadeh u64 cookie) 1783a40c4f10SYehuda Sadeh { 1784a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1785a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1786a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1787a40c4f10SYehuda Sadeh 1788a40c4f10SYehuda Sadeh while (*p) { 1789a40c4f10SYehuda Sadeh parent = *p; 1790a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1791a40c4f10SYehuda Sadeh if (cookie < event->cookie) 1792a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1793a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 1794a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1795a40c4f10SYehuda Sadeh else 1796a40c4f10SYehuda Sadeh return event; 1797a40c4f10SYehuda Sadeh } 1798a40c4f10SYehuda Sadeh return NULL; 1799a40c4f10SYehuda Sadeh } 1800a40c4f10SYehuda Sadeh 1801a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 1802a40c4f10SYehuda Sadeh { 1803a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1804a40c4f10SYehuda Sadeh 1805a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 1806a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 1807a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 1808a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1809a40c4f10SYehuda Sadeh } else { 1810a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 1811a40c4f10SYehuda Sadeh } 1812a40c4f10SYehuda Sadeh } 1813a40c4f10SYehuda Sadeh 1814a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 1815a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 18163c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 1817a40c4f10SYehuda Sadeh { 1818a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1819a40c4f10SYehuda Sadeh 1820a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 1821a40c4f10SYehuda Sadeh if (!event) 1822a40c4f10SYehuda Sadeh return -ENOMEM; 1823a40c4f10SYehuda Sadeh 1824a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 1825a40c4f10SYehuda Sadeh event->cb = event_cb; 18263c663bbdSAlex Elder event->one_shot = 0; 1827a40c4f10SYehuda Sadeh event->data = data; 1828a40c4f10SYehuda Sadeh event->osdc = osdc; 1829a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 18303ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 1831a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 1832a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 1833a40c4f10SYehuda Sadeh 1834a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1835a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 1836a40c4f10SYehuda Sadeh __insert_event(osdc, event); 1837a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1838a40c4f10SYehuda Sadeh 1839a40c4f10SYehuda Sadeh *pevent = event; 1840a40c4f10SYehuda Sadeh return 0; 1841a40c4f10SYehuda Sadeh } 1842a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 1843a40c4f10SYehuda Sadeh 1844a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 1845a40c4f10SYehuda Sadeh { 1846a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1847a40c4f10SYehuda Sadeh 1848a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 1849a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1850a40c4f10SYehuda Sadeh __remove_event(event); 1851a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1852a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 1853a40c4f10SYehuda Sadeh } 1854a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 1855a40c4f10SYehuda Sadeh 1856a40c4f10SYehuda Sadeh 1857a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 1858a40c4f10SYehuda Sadeh { 1859a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 1860a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 1861a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 1862a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 1863a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 1864a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 1865a40c4f10SYehuda Sadeh 1866a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 1867a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 1868a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 1869a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1870a40c4f10SYehuda Sadeh kfree(event_work); 1871a40c4f10SYehuda Sadeh } 1872a40c4f10SYehuda Sadeh 1873a40c4f10SYehuda Sadeh 1874a40c4f10SYehuda Sadeh /* 1875a40c4f10SYehuda Sadeh * Process osd watch notifications 1876a40c4f10SYehuda Sadeh */ 18773c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 18783c663bbdSAlex Elder struct ceph_msg *msg) 1879a40c4f10SYehuda Sadeh { 1880a40c4f10SYehuda Sadeh void *p, *end; 1881a40c4f10SYehuda Sadeh u8 proto_ver; 1882a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 1883a40c4f10SYehuda Sadeh u8 opcode; 1884a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1885a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 1886a40c4f10SYehuda Sadeh 1887a40c4f10SYehuda Sadeh p = msg->front.iov_base; 1888a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 1889a40c4f10SYehuda Sadeh 1890a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 1891a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 1892a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 1893a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 1894a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 1895a40c4f10SYehuda Sadeh 1896a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1897a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 1898a40c4f10SYehuda Sadeh if (event) { 18993c663bbdSAlex Elder BUG_ON(event->one_shot); 1900a40c4f10SYehuda Sadeh get_event(event); 1901a40c4f10SYehuda Sadeh } 1902a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1903a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 1904a40c4f10SYehuda Sadeh cookie, ver, event); 1905a40c4f10SYehuda Sadeh if (event) { 1906a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 1907a40c4f10SYehuda Sadeh if (!event_work) { 1908a40c4f10SYehuda Sadeh dout("ERROR: could not allocate event_work\n"); 1909a40c4f10SYehuda Sadeh goto done_err; 1910a40c4f10SYehuda Sadeh } 19116b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 1912a40c4f10SYehuda Sadeh event_work->event = event; 1913a40c4f10SYehuda Sadeh event_work->ver = ver; 1914a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 1915a40c4f10SYehuda Sadeh event_work->opcode = opcode; 1916a40c4f10SYehuda Sadeh if (!queue_work(osdc->notify_wq, &event_work->work)) { 1917a40c4f10SYehuda Sadeh dout("WARNING: failed to queue notify event work\n"); 1918a40c4f10SYehuda Sadeh goto done_err; 1919a40c4f10SYehuda Sadeh } 1920a40c4f10SYehuda Sadeh } 1921a40c4f10SYehuda Sadeh 1922a40c4f10SYehuda Sadeh return; 1923a40c4f10SYehuda Sadeh 1924a40c4f10SYehuda Sadeh done_err: 1925a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1926a40c4f10SYehuda Sadeh return; 1927a40c4f10SYehuda Sadeh 1928a40c4f10SYehuda Sadeh bad: 1929a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 1930a40c4f10SYehuda Sadeh return; 1931a40c4f10SYehuda Sadeh } 1932a40c4f10SYehuda Sadeh 193370636773SAlex Elder static void ceph_osdc_msg_data_set(struct ceph_msg *msg, 193470636773SAlex Elder struct ceph_osd_data *osd_data) 193570636773SAlex Elder { 193623c08a9cSAlex Elder u64 length = ceph_osd_data_length(osd_data); 193723c08a9cSAlex Elder 193870636773SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 193923c08a9cSAlex Elder BUG_ON(length > (u64) SIZE_MAX); 194023c08a9cSAlex Elder if (length) 194170636773SAlex Elder ceph_msg_data_set_pages(msg, osd_data->pages, 194223c08a9cSAlex Elder length, osd_data->alignment); 19439a5e6d09SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 194423c08a9cSAlex Elder BUG_ON(!length); 19459a5e6d09SAlex Elder ceph_msg_data_set_pagelist(msg, osd_data->pagelist); 194670636773SAlex Elder #ifdef CONFIG_BLOCK 194770636773SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 194823c08a9cSAlex Elder ceph_msg_data_set_bio(msg, osd_data->bio, length); 194970636773SAlex Elder #endif 195070636773SAlex Elder } else { 195170636773SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 195270636773SAlex Elder } 195370636773SAlex Elder } 195470636773SAlex Elder 1955a40c4f10SYehuda Sadeh /* 19563d14c5d2SYehuda Sadeh * Register request, send initial attempt. 19573d14c5d2SYehuda Sadeh */ 19583d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 19593d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 19603d14c5d2SYehuda Sadeh bool nofail) 19613d14c5d2SYehuda Sadeh { 19623d14c5d2SYehuda Sadeh int rc = 0; 19633d14c5d2SYehuda Sadeh 196470636773SAlex Elder /* Set up response incoming data and request outgoing data fields */ 19650fff87ecSAlex Elder 196670636773SAlex Elder ceph_osdc_msg_data_set(req->r_reply, &req->r_data_in); 196770636773SAlex Elder ceph_osdc_msg_data_set(req->r_request, &req->r_data_out); 19683d14c5d2SYehuda Sadeh 19693d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 19703d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1971dc4b870cSAlex Elder __register_request(osdc, req); 197292451b49SAlex Elder WARN_ON(req->r_sent); 197338d6453cSSage Weil rc = __map_request(osdc, req, 0); 19749d6fcb08SSage Weil if (rc < 0) { 19759d6fcb08SSage Weil if (nofail) { 19769d6fcb08SSage Weil dout("osdc_start_request failed map, " 19779d6fcb08SSage Weil " will retry %lld\n", req->r_tid); 19789d6fcb08SSage Weil rc = 0; 19799d6fcb08SSage Weil } 1980234af26fSDan Carpenter goto out_unlock; 19819d6fcb08SSage Weil } 19826f6c7006SSage Weil if (req->r_osd == NULL) { 19836f6c7006SSage Weil dout("send_request %p no up osds in pg\n", req); 19846f6c7006SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 19856f6c7006SSage Weil } else { 19867e2766a1SAlex Elder __send_queued(osdc); 198756e925b6SSage Weil } 19883d14c5d2SYehuda Sadeh rc = 0; 1989234af26fSDan Carpenter out_unlock: 19903d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19913d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 19923d14c5d2SYehuda Sadeh return rc; 19933d14c5d2SYehuda Sadeh } 19943d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 19953d14c5d2SYehuda Sadeh 19963d14c5d2SYehuda Sadeh /* 19973d14c5d2SYehuda Sadeh * wait for a request to complete 19983d14c5d2SYehuda Sadeh */ 19993d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 20003d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 20013d14c5d2SYehuda Sadeh { 20023d14c5d2SYehuda Sadeh int rc; 20033d14c5d2SYehuda Sadeh 20043d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 20053d14c5d2SYehuda Sadeh if (rc < 0) { 20063d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 20073d14c5d2SYehuda Sadeh __cancel_request(req); 20083d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 20093d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 201025845472SSage Weil complete_request(req); 20113d14c5d2SYehuda Sadeh dout("wait_request tid %llu canceled/timed out\n", req->r_tid); 20123d14c5d2SYehuda Sadeh return rc; 20133d14c5d2SYehuda Sadeh } 20143d14c5d2SYehuda Sadeh 20153d14c5d2SYehuda Sadeh dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); 20163d14c5d2SYehuda Sadeh return req->r_result; 20173d14c5d2SYehuda Sadeh } 20183d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 20193d14c5d2SYehuda Sadeh 20203d14c5d2SYehuda Sadeh /* 20213d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 20223d14c5d2SYehuda Sadeh */ 20233d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 20243d14c5d2SYehuda Sadeh { 20253d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 20263d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 20273d14c5d2SYehuda Sadeh 20283d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 20293d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 20303d14c5d2SYehuda Sadeh while (1) { 20313d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 20323d14c5d2SYehuda Sadeh if (!req) 20333d14c5d2SYehuda Sadeh break; 20343d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 20353d14c5d2SYehuda Sadeh break; 20363d14c5d2SYehuda Sadeh 20373d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 20383d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 20393d14c5d2SYehuda Sadeh continue; 20403d14c5d2SYehuda Sadeh 20413d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 20423d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 20433d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 20443d14c5d2SYehuda Sadeh req->r_tid, last_tid); 20453d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 20463d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 20473d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 20483d14c5d2SYehuda Sadeh } 20493d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 20503d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 20513d14c5d2SYehuda Sadeh } 20523d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 20533d14c5d2SYehuda Sadeh 20543d14c5d2SYehuda Sadeh /* 20553d14c5d2SYehuda Sadeh * init, shutdown 20563d14c5d2SYehuda Sadeh */ 20573d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 20583d14c5d2SYehuda Sadeh { 20593d14c5d2SYehuda Sadeh int err; 20603d14c5d2SYehuda Sadeh 20613d14c5d2SYehuda Sadeh dout("init\n"); 20623d14c5d2SYehuda Sadeh osdc->client = client; 20633d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 20643d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 20653d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 20663d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 20673d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 20683d14c5d2SYehuda Sadeh osdc->last_tid = 0; 20693d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 20703d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 20713d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 20723d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 20736f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 20746f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2075a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 20763d14c5d2SYehuda Sadeh osdc->num_requests = 0; 20773d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 20783d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2079a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2080a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2081a40c4f10SYehuda Sadeh osdc->event_count = 0; 20823d14c5d2SYehuda Sadeh 20833d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 20843d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 20853d14c5d2SYehuda Sadeh 20863d14c5d2SYehuda Sadeh err = -ENOMEM; 20873d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 20883d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 20893d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 20903d14c5d2SYehuda Sadeh goto out; 20913d14c5d2SYehuda Sadeh 2092d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2093d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 20943d14c5d2SYehuda Sadeh "osd_op"); 20953d14c5d2SYehuda Sadeh if (err < 0) 20963d14c5d2SYehuda Sadeh goto out_mempool; 2097d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 20983d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 20993d14c5d2SYehuda Sadeh "osd_op_reply"); 21003d14c5d2SYehuda Sadeh if (err < 0) 21013d14c5d2SYehuda Sadeh goto out_msgpool; 2102a40c4f10SYehuda Sadeh 2103a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2104a40c4f10SYehuda Sadeh if (IS_ERR(osdc->notify_wq)) { 2105a40c4f10SYehuda Sadeh err = PTR_ERR(osdc->notify_wq); 2106a40c4f10SYehuda Sadeh osdc->notify_wq = NULL; 2107a40c4f10SYehuda Sadeh goto out_msgpool; 2108a40c4f10SYehuda Sadeh } 21093d14c5d2SYehuda Sadeh return 0; 21103d14c5d2SYehuda Sadeh 21113d14c5d2SYehuda Sadeh out_msgpool: 21123d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 21133d14c5d2SYehuda Sadeh out_mempool: 21143d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 21153d14c5d2SYehuda Sadeh out: 21163d14c5d2SYehuda Sadeh return err; 21173d14c5d2SYehuda Sadeh } 21183d14c5d2SYehuda Sadeh 21193d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 21203d14c5d2SYehuda Sadeh { 2121a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2122a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 21233d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 21243d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 21253d14c5d2SYehuda Sadeh if (osdc->osdmap) { 21263d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 21273d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 21283d14c5d2SYehuda Sadeh } 2129aca420bcSSage Weil remove_all_osds(osdc); 21303d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 21313d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 21323d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 21333d14c5d2SYehuda Sadeh } 21343d14c5d2SYehuda Sadeh 21353d14c5d2SYehuda Sadeh /* 21363d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 21373d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 21383d14c5d2SYehuda Sadeh */ 21393d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 21403d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 21413d14c5d2SYehuda Sadeh u64 off, u64 *plen, 21423d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2143b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 21443d14c5d2SYehuda Sadeh { 21453d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 21463d14c5d2SYehuda Sadeh int rc = 0; 21473d14c5d2SYehuda Sadeh 21483d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 21493d14c5d2SYehuda Sadeh vino.snap, off, *plen); 215079528734SAlex Elder req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1, 21513d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2152acead002SAlex Elder NULL, truncate_seq, truncate_size, 2153153e5167SAlex Elder false); 21546816282dSSage Weil if (IS_ERR(req)) 21556816282dSSage Weil return PTR_ERR(req); 21563d14c5d2SYehuda Sadeh 21573d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 21580fff87ecSAlex Elder 215943bfe5deSAlex Elder ceph_osd_data_pages_init(&req->r_data_in, pages, *plen, page_align, 216043bfe5deSAlex Elder false, false); 21613d14c5d2SYehuda Sadeh 2162e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 216343bfe5deSAlex Elder off, *plen, *plen, page_align); 21643d14c5d2SYehuda Sadeh 216579528734SAlex Elder ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); 216602ee07d3SAlex Elder 21673d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 21683d14c5d2SYehuda Sadeh if (!rc) 21693d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 21703d14c5d2SYehuda Sadeh 21713d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 21723d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 21733d14c5d2SYehuda Sadeh return rc; 21743d14c5d2SYehuda Sadeh } 21753d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 21763d14c5d2SYehuda Sadeh 21773d14c5d2SYehuda Sadeh /* 21783d14c5d2SYehuda Sadeh * do a synchronous write on N pages 21793d14c5d2SYehuda Sadeh */ 21803d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 21813d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 21823d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 21833d14c5d2SYehuda Sadeh u64 off, u64 len, 21843d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 21853d14c5d2SYehuda Sadeh struct timespec *mtime, 218624808826SAlex Elder struct page **pages, int num_pages) 21873d14c5d2SYehuda Sadeh { 21883d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 21893d14c5d2SYehuda Sadeh int rc = 0; 2190b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 21913d14c5d2SYehuda Sadeh 2192acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 219379528734SAlex Elder req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1, 21943d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 219524808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2196acead002SAlex Elder snapc, truncate_seq, truncate_size, 2197153e5167SAlex Elder true); 21986816282dSSage Weil if (IS_ERR(req)) 21996816282dSSage Weil return PTR_ERR(req); 22003d14c5d2SYehuda Sadeh 22013d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 220243bfe5deSAlex Elder ceph_osd_data_pages_init(&req->r_data_out, pages, len, page_align, 220343bfe5deSAlex Elder false, false); 220443bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 22053d14c5d2SYehuda Sadeh 220679528734SAlex Elder ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); 220702ee07d3SAlex Elder 220887f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 22093d14c5d2SYehuda Sadeh if (!rc) 22103d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 22113d14c5d2SYehuda Sadeh 22123d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 22133d14c5d2SYehuda Sadeh if (rc == 0) 22143d14c5d2SYehuda Sadeh rc = len; 22153d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 22163d14c5d2SYehuda Sadeh return rc; 22173d14c5d2SYehuda Sadeh } 22183d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 22193d14c5d2SYehuda Sadeh 22203d14c5d2SYehuda Sadeh /* 22213d14c5d2SYehuda Sadeh * handle incoming message 22223d14c5d2SYehuda Sadeh */ 22233d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 22243d14c5d2SYehuda Sadeh { 22253d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22263d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 22273d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 22283d14c5d2SYehuda Sadeh 22293d14c5d2SYehuda Sadeh if (!osd) 22303d14c5d2SYehuda Sadeh goto out; 22313d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 22323d14c5d2SYehuda Sadeh 22333d14c5d2SYehuda Sadeh switch (type) { 22343d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 22353d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 22363d14c5d2SYehuda Sadeh break; 22373d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 22383d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 22393d14c5d2SYehuda Sadeh break; 2240a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2241a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2242a40c4f10SYehuda Sadeh break; 22433d14c5d2SYehuda Sadeh 22443d14c5d2SYehuda Sadeh default: 22453d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 22463d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 22473d14c5d2SYehuda Sadeh } 22483d14c5d2SYehuda Sadeh out: 22493d14c5d2SYehuda Sadeh ceph_msg_put(msg); 22503d14c5d2SYehuda Sadeh } 22513d14c5d2SYehuda Sadeh 22523d14c5d2SYehuda Sadeh /* 22533d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 22543d14c5d2SYehuda Sadeh * pages. 22553d14c5d2SYehuda Sadeh */ 22563d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 22573d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 22583d14c5d2SYehuda Sadeh int *skip) 22593d14c5d2SYehuda Sadeh { 22603d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22613d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 22623d14c5d2SYehuda Sadeh struct ceph_msg *m; 22633d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 22643d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 22653d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 22663d14c5d2SYehuda Sadeh u64 tid; 22673d14c5d2SYehuda Sadeh 22683d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 22693d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 22703d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 22713d14c5d2SYehuda Sadeh if (!req) { 22723d14c5d2SYehuda Sadeh *skip = 1; 22733d14c5d2SYehuda Sadeh m = NULL; 2274756a16a5SSage Weil dout("get_reply unknown tid %llu from osd%d\n", tid, 22753d14c5d2SYehuda Sadeh osd->o_osd); 22763d14c5d2SYehuda Sadeh goto out; 22773d14c5d2SYehuda Sadeh } 22783d14c5d2SYehuda Sadeh 2279ace6d3a9SAlex Elder if (req->r_reply->con) 22808921d114SAlex Elder dout("%s revoking msg %p from old con %p\n", __func__, 2281ace6d3a9SAlex Elder req->r_reply, req->r_reply->con); 22828921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 22833d14c5d2SYehuda Sadeh 22843d14c5d2SYehuda Sadeh if (front > req->r_reply->front.iov_len) { 22853d14c5d2SYehuda Sadeh pr_warning("get_reply front %d > preallocated %d\n", 22863d14c5d2SYehuda Sadeh front, (int)req->r_reply->front.iov_len); 2287b61c2763SSage Weil m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); 22883d14c5d2SYehuda Sadeh if (!m) 22893d14c5d2SYehuda Sadeh goto out; 22903d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 22913d14c5d2SYehuda Sadeh req->r_reply = m; 22923d14c5d2SYehuda Sadeh } 22933d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 22943d14c5d2SYehuda Sadeh 22953d14c5d2SYehuda Sadeh if (data_len > 0) { 22960fff87ecSAlex Elder struct ceph_osd_data *osd_data = &req->r_data_in; 22970fff87ecSAlex Elder 22980fff87ecSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 22990fff87ecSAlex Elder if (osd_data->pages && 2300e0c59487SAlex Elder unlikely(osd_data->length < data_len)) { 23012ac2b7a6SAlex Elder 2302e0c59487SAlex Elder pr_warning("tid %lld reply has %d bytes " 2303e0c59487SAlex Elder "we had only %llu bytes ready\n", 2304e0c59487SAlex Elder tid, data_len, osd_data->length); 23053d14c5d2SYehuda Sadeh *skip = 1; 23063d14c5d2SYehuda Sadeh ceph_msg_put(m); 23073d14c5d2SYehuda Sadeh m = NULL; 23083d14c5d2SYehuda Sadeh goto out; 23093d14c5d2SYehuda Sadeh } 23103d14c5d2SYehuda Sadeh } 23112ac2b7a6SAlex Elder } 23123d14c5d2SYehuda Sadeh *skip = 0; 23133d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 23143d14c5d2SYehuda Sadeh 23153d14c5d2SYehuda Sadeh out: 23163d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 23173d14c5d2SYehuda Sadeh return m; 23183d14c5d2SYehuda Sadeh 23193d14c5d2SYehuda Sadeh } 23203d14c5d2SYehuda Sadeh 23213d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 23223d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 23233d14c5d2SYehuda Sadeh int *skip) 23243d14c5d2SYehuda Sadeh { 23253d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 23263d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 23273d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 23283d14c5d2SYehuda Sadeh 23291c20f2d2SAlex Elder *skip = 0; 23303d14c5d2SYehuda Sadeh switch (type) { 23313d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2332a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2333b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 23343d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 23353d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 23363d14c5d2SYehuda Sadeh default: 23373d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 23383d14c5d2SYehuda Sadeh osd->o_osd); 23393d14c5d2SYehuda Sadeh *skip = 1; 23403d14c5d2SYehuda Sadeh return NULL; 23413d14c5d2SYehuda Sadeh } 23423d14c5d2SYehuda Sadeh } 23433d14c5d2SYehuda Sadeh 23443d14c5d2SYehuda Sadeh /* 23453d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 23463d14c5d2SYehuda Sadeh */ 23473d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 23483d14c5d2SYehuda Sadeh { 23493d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 23503d14c5d2SYehuda Sadeh if (get_osd(osd)) 23513d14c5d2SYehuda Sadeh return con; 23523d14c5d2SYehuda Sadeh return NULL; 23533d14c5d2SYehuda Sadeh } 23543d14c5d2SYehuda Sadeh 23553d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 23563d14c5d2SYehuda Sadeh { 23573d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 23583d14c5d2SYehuda Sadeh put_osd(osd); 23593d14c5d2SYehuda Sadeh } 23603d14c5d2SYehuda Sadeh 23613d14c5d2SYehuda Sadeh /* 23623d14c5d2SYehuda Sadeh * authentication 23633d14c5d2SYehuda Sadeh */ 2364a3530df3SAlex Elder /* 2365a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2366a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2367a3530df3SAlex Elder */ 2368a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 23698f43fb53SAlex Elder int *proto, int force_new) 23703d14c5d2SYehuda Sadeh { 23713d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23723d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23733d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 237474f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 23753d14c5d2SYehuda Sadeh 237674f1869fSAlex Elder if (force_new && auth->authorizer) { 237727859f97SSage Weil ceph_auth_destroy_authorizer(ac, auth->authorizer); 237874f1869fSAlex Elder auth->authorizer = NULL; 23793d14c5d2SYehuda Sadeh } 238027859f97SSage Weil if (!auth->authorizer) { 238127859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2382a3530df3SAlex Elder auth); 23833d14c5d2SYehuda Sadeh if (ret) 2384a3530df3SAlex Elder return ERR_PTR(ret); 238527859f97SSage Weil } else { 238627859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 23870bed9b5cSSage Weil auth); 23880bed9b5cSSage Weil if (ret) 23890bed9b5cSSage Weil return ERR_PTR(ret); 23903d14c5d2SYehuda Sadeh } 23913d14c5d2SYehuda Sadeh *proto = ac->protocol; 239274f1869fSAlex Elder 2393a3530df3SAlex Elder return auth; 23943d14c5d2SYehuda Sadeh } 23953d14c5d2SYehuda Sadeh 23963d14c5d2SYehuda Sadeh 23973d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 23983d14c5d2SYehuda Sadeh { 23993d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 24003d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 24013d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 24023d14c5d2SYehuda Sadeh 240327859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 24043d14c5d2SYehuda Sadeh } 24053d14c5d2SYehuda Sadeh 24063d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 24073d14c5d2SYehuda Sadeh { 24083d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 24093d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 24103d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 24113d14c5d2SYehuda Sadeh 241227859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 24133d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 24143d14c5d2SYehuda Sadeh } 24153d14c5d2SYehuda Sadeh 24163d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 24173d14c5d2SYehuda Sadeh .get = get_osd_con, 24183d14c5d2SYehuda Sadeh .put = put_osd_con, 24193d14c5d2SYehuda Sadeh .dispatch = dispatch, 24203d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 24213d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 24223d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 24233d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 24243d14c5d2SYehuda Sadeh .fault = osd_reset, 24253d14c5d2SYehuda Sadeh }; 2426