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 37533803f33SAlex Elder void osd_req_op_cls_init(struct ceph_osd_req_op *op, u16 opcode, 37633803f33SAlex Elder const char *class, const char *method, 37733803f33SAlex Elder const void *request_data, size_t request_data_size) 37833803f33SAlex Elder { 37933803f33SAlex Elder size_t payload_len = 0; 38033803f33SAlex Elder size_t size; 38133803f33SAlex Elder 38233803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 38333803f33SAlex Elder 38433803f33SAlex Elder osd_req_op_init(op, opcode); 38533803f33SAlex Elder 38633803f33SAlex Elder op->cls.class_name = class; 38733803f33SAlex Elder size = strlen(class); 38833803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 38933803f33SAlex Elder op->cls.class_len = size; 39033803f33SAlex Elder payload_len += size; 39133803f33SAlex Elder 39233803f33SAlex Elder op->cls.method_name = method; 39333803f33SAlex Elder size = strlen(method); 39433803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 39533803f33SAlex Elder op->cls.method_len = size; 39633803f33SAlex Elder payload_len += size; 39733803f33SAlex Elder 39833803f33SAlex Elder op->cls.indata = request_data; 39933803f33SAlex Elder BUG_ON(request_data_size > (size_t) U32_MAX); 40033803f33SAlex Elder op->cls.indata_len = (u32) request_data_size; 40133803f33SAlex Elder payload_len += request_data_size; 40233803f33SAlex Elder 40333803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 40433803f33SAlex Elder 40533803f33SAlex Elder op->payload_len = payload_len; 40633803f33SAlex Elder } 40733803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 40833803f33SAlex Elder 40933803f33SAlex Elder void osd_req_op_watch_init(struct ceph_osd_req_op *op, u16 opcode, 41033803f33SAlex Elder u64 cookie, u64 version, int flag) 41133803f33SAlex Elder { 41233803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 41333803f33SAlex Elder 41433803f33SAlex Elder osd_req_op_init(op, opcode); 41533803f33SAlex Elder 41633803f33SAlex Elder op->watch.cookie = cookie; 41733803f33SAlex Elder /* op->watch.ver = version; */ /* XXX 3847 */ 41833803f33SAlex Elder op->watch.ver = cpu_to_le64(version); 41933803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 42033803f33SAlex Elder op->watch.flag = (u8) 1; 42133803f33SAlex Elder } 42233803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 42333803f33SAlex Elder 424175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 42579528734SAlex Elder struct ceph_osd_op *dst, unsigned int which) 4263d14c5d2SYehuda Sadeh { 42779528734SAlex Elder struct ceph_osd_req_op *src; 428175face2SAlex Elder u64 out_data_len = 0; 42995e072ebSAlex Elder struct ceph_pagelist *pagelist; 430175face2SAlex Elder 43179528734SAlex Elder BUG_ON(which >= req->r_num_ops); 43279528734SAlex Elder src = &req->r_ops[which]; 433a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 434a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 435a8dd0a37SAlex Elder 436a8dd0a37SAlex Elder return 0; 437a8dd0a37SAlex Elder } 4383d14c5d2SYehuda Sadeh 439065a68f9SAlex Elder switch (src->op) { 440fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 441fbfab539SAlex Elder break; 4423d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 4433d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 444175face2SAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 445175face2SAlex Elder out_data_len = src->extent.length; 446175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 447175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 4483d14c5d2SYehuda Sadeh dst->extent.truncate_size = 4493d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 4503d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 4513d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 4523d14c5d2SYehuda Sadeh break; 4533d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 45495e072ebSAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 45595e072ebSAlex Elder BUG_ON(!pagelist); 45695e072ebSAlex Elder ceph_pagelist_init(pagelist); 45795e072ebSAlex Elder 4583d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 4593d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 4603d14c5d2SYehuda Sadeh dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 46195e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.class_name, 4623d14c5d2SYehuda Sadeh src->cls.class_len); 46395e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.method_name, 4643d14c5d2SYehuda Sadeh src->cls.method_len); 46595e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.indata, 4663d14c5d2SYehuda Sadeh src->cls.indata_len); 46795e072ebSAlex Elder 46843bfe5deSAlex Elder ceph_osd_data_pagelist_init(&req->r_data_out, pagelist); 46995e072ebSAlex Elder out_data_len = pagelist->length; 4703d14c5d2SYehuda Sadeh break; 4713d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 4723d14c5d2SYehuda Sadeh break; 473a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 474a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 475a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 476a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 477a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 478a40c4f10SYehuda Sadeh break; 4793d14c5d2SYehuda Sadeh default: 4804c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 4818f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 4824c46459cSAlex Elder WARN_ON(1); 483a8dd0a37SAlex Elder 484a8dd0a37SAlex Elder return 0; 4853d14c5d2SYehuda Sadeh } 486a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 4873d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 488175face2SAlex Elder 489175face2SAlex Elder return out_data_len; 4903d14c5d2SYehuda Sadeh } 4913d14c5d2SYehuda Sadeh 4923d14c5d2SYehuda Sadeh /* 4933d14c5d2SYehuda Sadeh * build new request AND message 4943d14c5d2SYehuda Sadeh * 4953d14c5d2SYehuda Sadeh */ 49679528734SAlex Elder void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, 4974d6b250bSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 498af77f26cSAlex Elder struct timespec *mtime) 4993d14c5d2SYehuda Sadeh { 5003d14c5d2SYehuda Sadeh struct ceph_msg *msg = req->r_request; 5013d14c5d2SYehuda Sadeh void *p; 5021b83bef2SSage Weil size_t msg_size; 5033d14c5d2SYehuda Sadeh int flags = req->r_flags; 504f44246e3SAlex Elder u64 data_len; 50579528734SAlex Elder unsigned int i; 5063d14c5d2SYehuda Sadeh 5071b83bef2SSage Weil req->r_snapid = snap_id; 5083d14c5d2SYehuda Sadeh req->r_snapc = ceph_get_snap_context(snapc); 5093d14c5d2SYehuda Sadeh 5101b83bef2SSage Weil /* encode request */ 5111b83bef2SSage Weil msg->hdr.version = cpu_to_le16(4); 5123d14c5d2SYehuda Sadeh 5131b83bef2SSage Weil p = msg->front.iov_base; 5141b83bef2SSage Weil ceph_encode_32(&p, 1); /* client_inc is always 1 */ 5151b83bef2SSage Weil req->r_request_osdmap_epoch = p; 5161b83bef2SSage Weil p += 4; 5171b83bef2SSage Weil req->r_request_flags = p; 5181b83bef2SSage Weil p += 4; 5191b83bef2SSage Weil if (req->r_flags & CEPH_OSD_FLAG_WRITE) 5201b83bef2SSage Weil ceph_encode_timespec(p, mtime); 5211b83bef2SSage Weil p += sizeof(struct ceph_timespec); 5221b83bef2SSage Weil req->r_request_reassert_version = p; 5231b83bef2SSage Weil p += sizeof(struct ceph_eversion); /* will get filled in */ 5241b83bef2SSage Weil 5251b83bef2SSage Weil /* oloc */ 5261b83bef2SSage Weil ceph_encode_8(&p, 4); 5271b83bef2SSage Weil ceph_encode_8(&p, 4); 5281b83bef2SSage Weil ceph_encode_32(&p, 8 + 4 + 4); 5291b83bef2SSage Weil req->r_request_pool = p; 5301b83bef2SSage Weil p += 8; 5311b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 5321b83bef2SSage Weil ceph_encode_32(&p, 0); /* key len */ 5331b83bef2SSage Weil 5341b83bef2SSage Weil ceph_encode_8(&p, 1); 5351b83bef2SSage Weil req->r_request_pgid = p; 5361b83bef2SSage Weil p += 8 + 4; 5371b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 5381b83bef2SSage Weil 5391b83bef2SSage Weil /* oid */ 5401b83bef2SSage Weil ceph_encode_32(&p, req->r_oid_len); 541af77f26cSAlex Elder memcpy(p, req->r_oid, req->r_oid_len); 5421b83bef2SSage Weil dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); 543af77f26cSAlex Elder p += req->r_oid_len; 5443d14c5d2SYehuda Sadeh 545175face2SAlex Elder /* ops--can imply data */ 54679528734SAlex Elder ceph_encode_16(&p, (u16)req->r_num_ops); 547175face2SAlex Elder data_len = 0; 54879528734SAlex Elder for (i = 0; i < req->r_num_ops; i++) { 54979528734SAlex Elder data_len += osd_req_encode_op(req, p, i); 5501b83bef2SSage Weil p += sizeof(struct ceph_osd_op); 5511b83bef2SSage Weil } 5523d14c5d2SYehuda Sadeh 5531b83bef2SSage Weil /* snaps */ 5541b83bef2SSage Weil ceph_encode_64(&p, req->r_snapid); 5551b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 5561b83bef2SSage Weil ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 5571b83bef2SSage Weil if (req->r_snapc) { 5583d14c5d2SYehuda Sadeh for (i = 0; i < snapc->num_snaps; i++) { 5591b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc->snaps[i]); 5603d14c5d2SYehuda Sadeh } 5613d14c5d2SYehuda Sadeh } 5623d14c5d2SYehuda Sadeh 5631b83bef2SSage Weil req->r_request_attempts = p; 5641b83bef2SSage Weil p += 4; 5651b83bef2SSage Weil 566175face2SAlex Elder /* data */ 5670baa1bd9SAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 5680baa1bd9SAlex Elder u16 data_off; 5690baa1bd9SAlex Elder 5700baa1bd9SAlex Elder /* 5710baa1bd9SAlex Elder * The header "data_off" is a hint to the receiver 5720baa1bd9SAlex Elder * allowing it to align received data into its 5730baa1bd9SAlex Elder * buffers such that there's no need to re-copy 5740baa1bd9SAlex Elder * it before writing it to disk (direct I/O). 5750baa1bd9SAlex Elder */ 5760baa1bd9SAlex Elder data_off = (u16) (off & 0xffff); 5770baa1bd9SAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 5780baa1bd9SAlex Elder } 579f44246e3SAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 580c5c6b19dSSage Weil 5813d14c5d2SYehuda Sadeh BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 5823d14c5d2SYehuda Sadeh msg_size = p - msg->front.iov_base; 5833d14c5d2SYehuda Sadeh msg->front.iov_len = msg_size; 5843d14c5d2SYehuda Sadeh msg->hdr.front_len = cpu_to_le32(msg_size); 5851b83bef2SSage Weil 586acead002SAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 5873d14c5d2SYehuda Sadeh } 5883d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_build_request); 5893d14c5d2SYehuda Sadeh 5903d14c5d2SYehuda Sadeh /* 5913d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 5923d14c5d2SYehuda Sadeh * extent as needed. 5933d14c5d2SYehuda Sadeh * 5943d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 5953d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 5963d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 5973d14c5d2SYehuda Sadeh * 5983d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 5993d14c5d2SYehuda Sadeh * data quickly. 6003d14c5d2SYehuda Sadeh */ 6013d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 6023d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 6033d14c5d2SYehuda Sadeh struct ceph_vino vino, 604acead002SAlex Elder u64 off, u64 *plen, int num_ops, 6053d14c5d2SYehuda Sadeh int opcode, int flags, 6063d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 6073d14c5d2SYehuda Sadeh u32 truncate_seq, 6083d14c5d2SYehuda Sadeh u64 truncate_size, 609153e5167SAlex Elder bool use_mempool) 6103d14c5d2SYehuda Sadeh { 6113d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 61279528734SAlex Elder struct ceph_osd_req_op *op; 61375d1c941SAlex Elder u64 objnum = 0; 61475d1c941SAlex Elder u64 objoff = 0; 61575d1c941SAlex Elder u64 objlen = 0; 616d18d1e28SAlex Elder u32 object_size; 617d18d1e28SAlex Elder u64 object_base; 6186816282dSSage Weil int r; 6193d14c5d2SYehuda Sadeh 620d18d1e28SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); 6213d14c5d2SYehuda Sadeh 622acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 623ae7ca4a3SAlex Elder GFP_NOFS); 6244ad12621SSage Weil if (!req) 6256816282dSSage Weil return ERR_PTR(-ENOMEM); 62679528734SAlex Elder 627d178a9e7SAlex Elder req->r_flags = flags; 6283d14c5d2SYehuda Sadeh 6293d14c5d2SYehuda Sadeh /* calculate max write size */ 630a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 6313ff5f385SAlex Elder if (r < 0) { 6323ff5f385SAlex Elder ceph_osdc_put_request(req); 6336816282dSSage Weil return ERR_PTR(r); 6343ff5f385SAlex Elder } 635a19dadfbSAlex Elder 636d18d1e28SAlex Elder object_size = le32_to_cpu(layout->fl_object_size); 637d18d1e28SAlex Elder object_base = off - objoff; 638d18d1e28SAlex Elder if (truncate_size <= object_base) { 639d18d1e28SAlex Elder truncate_size = 0; 640d18d1e28SAlex Elder } else { 641d18d1e28SAlex Elder truncate_size -= object_base; 642d18d1e28SAlex Elder if (truncate_size > object_size) 643d18d1e28SAlex Elder truncate_size = object_size; 644d18d1e28SAlex Elder } 645d18d1e28SAlex Elder 64679528734SAlex Elder op = &req->r_ops[0]; 64779528734SAlex Elder osd_req_op_extent_init(op, opcode, objoff, objlen, 648b0270324SAlex Elder truncate_size, truncate_seq); 649acead002SAlex Elder /* 650acead002SAlex Elder * A second op in the ops array means the caller wants to 651acead002SAlex Elder * also issue a include a 'startsync' command so that the 652acead002SAlex Elder * osd will flush data quickly. 653acead002SAlex Elder */ 654acead002SAlex Elder if (num_ops > 1) 65579528734SAlex Elder osd_req_op_init(++op, CEPH_OSD_OP_STARTSYNC); 656d18d1e28SAlex Elder 6573d14c5d2SYehuda Sadeh req->r_file_layout = *layout; /* keep a copy */ 6583d14c5d2SYehuda Sadeh 65975d1c941SAlex Elder snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", 66075d1c941SAlex Elder vino.ino, objnum); 661dbe0fc41SAlex Elder req->r_oid_len = strlen(req->r_oid); 662dbe0fc41SAlex Elder 6633d14c5d2SYehuda Sadeh return req; 6643d14c5d2SYehuda Sadeh } 6653d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 6663d14c5d2SYehuda Sadeh 6673d14c5d2SYehuda Sadeh /* 6683d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 6693d14c5d2SYehuda Sadeh */ 6703d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 6713d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 6723d14c5d2SYehuda Sadeh { 6733d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 6743d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 6753d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 6763d14c5d2SYehuda Sadeh 6773d14c5d2SYehuda Sadeh while (*p) { 6783d14c5d2SYehuda Sadeh parent = *p; 6793d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 6803d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 6813d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 6823d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 6833d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 6843d14c5d2SYehuda Sadeh else 6853d14c5d2SYehuda Sadeh BUG(); 6863d14c5d2SYehuda Sadeh } 6873d14c5d2SYehuda Sadeh 6883d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 6893d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 6903d14c5d2SYehuda Sadeh } 6913d14c5d2SYehuda Sadeh 6923d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 6933d14c5d2SYehuda Sadeh u64 tid) 6943d14c5d2SYehuda Sadeh { 6953d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 6963d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 6973d14c5d2SYehuda Sadeh 6983d14c5d2SYehuda Sadeh while (n) { 6993d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 7003d14c5d2SYehuda Sadeh if (tid < req->r_tid) 7013d14c5d2SYehuda Sadeh n = n->rb_left; 7023d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 7033d14c5d2SYehuda Sadeh n = n->rb_right; 7043d14c5d2SYehuda Sadeh else 7053d14c5d2SYehuda Sadeh return req; 7063d14c5d2SYehuda Sadeh } 7073d14c5d2SYehuda Sadeh return NULL; 7083d14c5d2SYehuda Sadeh } 7093d14c5d2SYehuda Sadeh 7103d14c5d2SYehuda Sadeh static struct ceph_osd_request * 7113d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 7123d14c5d2SYehuda Sadeh u64 tid) 7133d14c5d2SYehuda Sadeh { 7143d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 7153d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 7163d14c5d2SYehuda Sadeh 7173d14c5d2SYehuda Sadeh while (n) { 7183d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 7193d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 7203d14c5d2SYehuda Sadeh if (!n->rb_left) 7213d14c5d2SYehuda Sadeh return req; 7223d14c5d2SYehuda Sadeh n = n->rb_left; 7233d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 7243d14c5d2SYehuda Sadeh n = n->rb_right; 7253d14c5d2SYehuda Sadeh } else { 7263d14c5d2SYehuda Sadeh return req; 7273d14c5d2SYehuda Sadeh } 7283d14c5d2SYehuda Sadeh } 7293d14c5d2SYehuda Sadeh return NULL; 7303d14c5d2SYehuda Sadeh } 7313d14c5d2SYehuda Sadeh 7326f6c7006SSage Weil /* 7336f6c7006SSage Weil * Resubmit requests pending on the given osd. 7346f6c7006SSage Weil */ 7356f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 7366f6c7006SSage Weil struct ceph_osd *osd) 7376f6c7006SSage Weil { 738a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 739e02493c0SAlex Elder LIST_HEAD(resend); 7406f6c7006SSage Weil int err; 7416f6c7006SSage Weil 7426f6c7006SSage Weil dout("__kick_osd_requests osd%d\n", osd->o_osd); 7436f6c7006SSage Weil err = __reset_osd(osdc, osd); 744685a7555SAlex Elder if (err) 7456f6c7006SSage Weil return; 746e02493c0SAlex Elder /* 747e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 748e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 749e02493c0SAlex Elder * sent in tid order, and that is also the order they're 750e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 751e02493c0SAlex Elder * flight will be found first, followed by all requests that 752e02493c0SAlex Elder * have not yet been sent. And to resend requests while 753e02493c0SAlex Elder * preserving this order we will want to put any sent 754e02493c0SAlex Elder * requests back on the front of the osd client's unsent 755e02493c0SAlex Elder * list. 756e02493c0SAlex Elder * 757e02493c0SAlex Elder * So we build a separate ordered list of already-sent 758e02493c0SAlex Elder * requests for the affected osd and splice it onto the 759e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 760e02493c0SAlex Elder * request that has not yet been sent we're done. Those 761e02493c0SAlex Elder * requests are already sitting right where they belong. 762e02493c0SAlex Elder */ 7636f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 764e02493c0SAlex Elder if (!req->r_sent) 765e02493c0SAlex Elder break; 766e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 767e02493c0SAlex Elder dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, 7686f6c7006SSage Weil osd->o_osd); 769a40c4f10SYehuda Sadeh if (!req->r_linger) 7706f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 7716f6c7006SSage Weil } 772e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 773a40c4f10SYehuda Sadeh 774e02493c0SAlex Elder /* 775e02493c0SAlex Elder * Linger requests are re-registered before sending, which 776e02493c0SAlex Elder * sets up a new tid for each. We add them to the unsent 777e02493c0SAlex Elder * list at the end to keep things in tid order. 778e02493c0SAlex Elder */ 779a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 780a40c4f10SYehuda Sadeh r_linger_osd) { 78177f38e0eSSage Weil /* 78277f38e0eSSage Weil * reregister request prior to unregistering linger so 78377f38e0eSSage Weil * that r_osd is preserved. 78477f38e0eSSage Weil */ 78577f38e0eSSage Weil BUG_ON(!list_empty(&req->r_req_lru_item)); 786a40c4f10SYehuda Sadeh __register_request(osdc, req); 787e02493c0SAlex Elder list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); 788ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 78977f38e0eSSage Weil __unregister_linger_request(osdc, req); 790a40c4f10SYehuda Sadeh dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, 791a40c4f10SYehuda Sadeh osd->o_osd); 792a40c4f10SYehuda Sadeh } 7936f6c7006SSage Weil } 7946f6c7006SSage Weil 7953d14c5d2SYehuda Sadeh /* 7963d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 7973d14c5d2SYehuda Sadeh */ 7983d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 7993d14c5d2SYehuda Sadeh { 8003d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 8013d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 8023d14c5d2SYehuda Sadeh 8033d14c5d2SYehuda Sadeh if (!osd) 8043d14c5d2SYehuda Sadeh return; 8053d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 8063d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 8073d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 80883aff95eSSage Weil mutex_lock(&osdc->request_mutex); 80983aff95eSSage Weil __kick_osd_requests(osdc, osd); 810f9d25199SAlex Elder __send_queued(osdc); 81183aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 8123d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 8133d14c5d2SYehuda Sadeh } 8143d14c5d2SYehuda Sadeh 8153d14c5d2SYehuda Sadeh /* 8163d14c5d2SYehuda Sadeh * Track open sessions with osds. 8173d14c5d2SYehuda Sadeh */ 818e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 8193d14c5d2SYehuda Sadeh { 8203d14c5d2SYehuda Sadeh struct ceph_osd *osd; 8213d14c5d2SYehuda Sadeh 8223d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 8233d14c5d2SYehuda Sadeh if (!osd) 8243d14c5d2SYehuda Sadeh return NULL; 8253d14c5d2SYehuda Sadeh 8263d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 8273d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 828e10006f8SAlex Elder osd->o_osd = onum; 829f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 8303d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 831a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 8323d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 8333d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 8343d14c5d2SYehuda Sadeh 835b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 8363d14c5d2SYehuda Sadeh 8373d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 8383d14c5d2SYehuda Sadeh return osd; 8393d14c5d2SYehuda Sadeh } 8403d14c5d2SYehuda Sadeh 8413d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 8423d14c5d2SYehuda Sadeh { 8433d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 8443d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 8453d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 8463d14c5d2SYehuda Sadeh return osd; 8473d14c5d2SYehuda Sadeh } else { 8483d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 8493d14c5d2SYehuda Sadeh return NULL; 8503d14c5d2SYehuda Sadeh } 8513d14c5d2SYehuda Sadeh } 8523d14c5d2SYehuda Sadeh 8533d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 8543d14c5d2SYehuda Sadeh { 8553d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 8563d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 857a255651dSAlex Elder if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { 8583d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 8593d14c5d2SYehuda Sadeh 86027859f97SSage Weil ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); 8613d14c5d2SYehuda Sadeh kfree(osd); 8623d14c5d2SYehuda Sadeh } 8633d14c5d2SYehuda Sadeh } 8643d14c5d2SYehuda Sadeh 8653d14c5d2SYehuda Sadeh /* 8663d14c5d2SYehuda Sadeh * remove an osd from our map 8673d14c5d2SYehuda Sadeh */ 8683d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 8693d14c5d2SYehuda Sadeh { 8703d14c5d2SYehuda Sadeh dout("__remove_osd %p\n", osd); 8713d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_requests)); 8723d14c5d2SYehuda Sadeh rb_erase(&osd->o_node, &osdc->osds); 8733d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 8743d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 8753d14c5d2SYehuda Sadeh put_osd(osd); 8763d14c5d2SYehuda Sadeh } 8773d14c5d2SYehuda Sadeh 878aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 879aca420bcSSage Weil { 880048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 881aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 882aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 883aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 884aca420bcSSage Weil struct ceph_osd, o_node); 885aca420bcSSage Weil __remove_osd(osdc, osd); 886aca420bcSSage Weil } 887aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 888aca420bcSSage Weil } 889aca420bcSSage Weil 8903d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 8913d14c5d2SYehuda Sadeh struct ceph_osd *osd) 8923d14c5d2SYehuda Sadeh { 8933d14c5d2SYehuda Sadeh dout("__move_osd_to_lru %p\n", osd); 8943d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 8953d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 8963d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 8973d14c5d2SYehuda Sadeh } 8983d14c5d2SYehuda Sadeh 8993d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 9003d14c5d2SYehuda Sadeh { 9013d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 9023d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 9033d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 9043d14c5d2SYehuda Sadeh } 9053d14c5d2SYehuda Sadeh 906aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 9073d14c5d2SYehuda Sadeh { 9083d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 9093d14c5d2SYehuda Sadeh 9103d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 9113d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 9123d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 913aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 9143d14c5d2SYehuda Sadeh break; 9153d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 9163d14c5d2SYehuda Sadeh } 9173d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 9183d14c5d2SYehuda Sadeh } 9193d14c5d2SYehuda Sadeh 9203d14c5d2SYehuda Sadeh /* 9213d14c5d2SYehuda Sadeh * reset osd connect 9223d14c5d2SYehuda Sadeh */ 9233d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 9243d14c5d2SYehuda Sadeh { 925c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 9263d14c5d2SYehuda Sadeh 9273d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 928a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 929a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 9303d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 931c3acb181SAlex Elder 932c3acb181SAlex Elder return -ENODEV; 933c3acb181SAlex Elder } 934c3acb181SAlex Elder 935c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 936c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 9373d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 938c3acb181SAlex Elder struct ceph_osd_request *req; 939c3acb181SAlex Elder 9403d14c5d2SYehuda Sadeh dout(" osd addr hasn't changed and connection never opened," 9413d14c5d2SYehuda Sadeh " letting msgr retry"); 9423d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 9433d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 9443d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 945c3acb181SAlex Elder 946c3acb181SAlex Elder return -EAGAIN; 9473d14c5d2SYehuda Sadeh } 948c3acb181SAlex Elder 949c3acb181SAlex Elder ceph_con_close(&osd->o_con); 950c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 951c3acb181SAlex Elder osd->o_incarnation++; 952c3acb181SAlex Elder 953c3acb181SAlex Elder return 0; 9543d14c5d2SYehuda Sadeh } 9553d14c5d2SYehuda Sadeh 9563d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 9573d14c5d2SYehuda Sadeh { 9583d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 9593d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 9603d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 9613d14c5d2SYehuda Sadeh 962aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 9633d14c5d2SYehuda Sadeh while (*p) { 9643d14c5d2SYehuda Sadeh parent = *p; 9653d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 9663d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 9673d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 9683d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 9693d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 9703d14c5d2SYehuda Sadeh else 9713d14c5d2SYehuda Sadeh BUG(); 9723d14c5d2SYehuda Sadeh } 9733d14c5d2SYehuda Sadeh 9743d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 9753d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 9763d14c5d2SYehuda Sadeh } 9773d14c5d2SYehuda Sadeh 9783d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 9793d14c5d2SYehuda Sadeh { 9803d14c5d2SYehuda Sadeh struct ceph_osd *osd; 9813d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 9823d14c5d2SYehuda Sadeh 9833d14c5d2SYehuda Sadeh while (n) { 9843d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 9853d14c5d2SYehuda Sadeh if (o < osd->o_osd) 9863d14c5d2SYehuda Sadeh n = n->rb_left; 9873d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 9883d14c5d2SYehuda Sadeh n = n->rb_right; 9893d14c5d2SYehuda Sadeh else 9903d14c5d2SYehuda Sadeh return osd; 9913d14c5d2SYehuda Sadeh } 9923d14c5d2SYehuda Sadeh return NULL; 9933d14c5d2SYehuda Sadeh } 9943d14c5d2SYehuda Sadeh 9953d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 9963d14c5d2SYehuda Sadeh { 9973d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 9983d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 9993d14c5d2SYehuda Sadeh } 10003d14c5d2SYehuda Sadeh 10013d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 10023d14c5d2SYehuda Sadeh { 10033d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 10043d14c5d2SYehuda Sadeh } 10053d14c5d2SYehuda Sadeh 10063d14c5d2SYehuda Sadeh /* 10073d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 10083d14c5d2SYehuda Sadeh * the timeout event. 10093d14c5d2SYehuda Sadeh */ 1010a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 10113d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 10123d14c5d2SYehuda Sadeh { 10133d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 10143d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 101577f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 10163d14c5d2SYehuda Sadeh __insert_request(osdc, req); 10173d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 10183d14c5d2SYehuda Sadeh osdc->num_requests++; 10193d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 10203d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 10213d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 10223d14c5d2SYehuda Sadeh } 1023a40c4f10SYehuda Sadeh } 1024a40c4f10SYehuda Sadeh 10253d14c5d2SYehuda Sadeh /* 10263d14c5d2SYehuda Sadeh * called under osdc->request_mutex 10273d14c5d2SYehuda Sadeh */ 10283d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 10293d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 10303d14c5d2SYehuda Sadeh { 103135f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 103235f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 103335f9f8a0SSage Weil req, req->r_tid); 103435f9f8a0SSage Weil return; 103535f9f8a0SSage Weil } 103635f9f8a0SSage Weil 10373d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 10383d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 10393d14c5d2SYehuda Sadeh osdc->num_requests--; 10403d14c5d2SYehuda Sadeh 10413d14c5d2SYehuda Sadeh if (req->r_osd) { 10423d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 10436740a845SAlex Elder ceph_msg_revoke(req->r_request); 10443d14c5d2SYehuda Sadeh 10453d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1046a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 1047a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 1048a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 10493d14c5d2SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 1050a40c4f10SYehuda Sadeh } 1051fbdb9190SSage Weil if (list_empty(&req->r_linger_item)) 10523d14c5d2SYehuda Sadeh req->r_osd = NULL; 10533d14c5d2SYehuda Sadeh } 10543d14c5d2SYehuda Sadeh 10557d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 10563d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 10573d14c5d2SYehuda Sadeh 10583d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 10593d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 10603d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 10613d14c5d2SYehuda Sadeh } 10623d14c5d2SYehuda Sadeh } 10633d14c5d2SYehuda Sadeh 10643d14c5d2SYehuda Sadeh /* 10653d14c5d2SYehuda Sadeh * Cancel a previously queued request message 10663d14c5d2SYehuda Sadeh */ 10673d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 10683d14c5d2SYehuda Sadeh { 10693d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 10706740a845SAlex Elder ceph_msg_revoke(req->r_request); 10713d14c5d2SYehuda Sadeh req->r_sent = 0; 10723d14c5d2SYehuda Sadeh } 10733d14c5d2SYehuda Sadeh } 10743d14c5d2SYehuda Sadeh 1075a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1076a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1077a40c4f10SYehuda Sadeh { 1078a40c4f10SYehuda Sadeh dout("__register_linger_request %p\n", req); 1079a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 10806194ea89SSage Weil if (req->r_osd) 10816194ea89SSage Weil list_add_tail(&req->r_linger_osd, 10826194ea89SSage Weil &req->r_osd->o_linger_requests); 1083a40c4f10SYehuda Sadeh } 1084a40c4f10SYehuda Sadeh 1085a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1086a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1087a40c4f10SYehuda Sadeh { 1088a40c4f10SYehuda Sadeh dout("__unregister_linger_request %p\n", req); 1089a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 109061c74035SAlex Elder if (req->r_osd) { 1091a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_osd); 1092a40c4f10SYehuda Sadeh 1093a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 1094a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 1095a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 1096a40c4f10SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 1097a40c4f10SYehuda Sadeh } 1098fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1099a40c4f10SYehuda Sadeh req->r_osd = NULL; 1100a40c4f10SYehuda Sadeh } 1101a40c4f10SYehuda Sadeh } 1102a40c4f10SYehuda Sadeh 1103a40c4f10SYehuda Sadeh void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, 1104a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1105a40c4f10SYehuda Sadeh { 1106a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1107a40c4f10SYehuda Sadeh if (req->r_linger) { 1108a40c4f10SYehuda Sadeh __unregister_linger_request(osdc, req); 1109a40c4f10SYehuda Sadeh ceph_osdc_put_request(req); 1110a40c4f10SYehuda Sadeh } 1111a40c4f10SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1112a40c4f10SYehuda Sadeh } 1113a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); 1114a40c4f10SYehuda Sadeh 1115a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1116a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1117a40c4f10SYehuda Sadeh { 1118a40c4f10SYehuda Sadeh if (!req->r_linger) { 1119a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1120a40c4f10SYehuda Sadeh req->r_linger = 1; 1121a40c4f10SYehuda Sadeh /* 1122a40c4f10SYehuda Sadeh * caller is now responsible for calling 1123a40c4f10SYehuda Sadeh * unregister_linger_request 1124a40c4f10SYehuda Sadeh */ 1125a40c4f10SYehuda Sadeh ceph_osdc_get_request(req); 1126a40c4f10SYehuda Sadeh } 1127a40c4f10SYehuda Sadeh } 1128a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1129a40c4f10SYehuda Sadeh 11303d14c5d2SYehuda Sadeh /* 11313d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 11323d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 113325985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 11346f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 11353d14c5d2SYehuda Sadeh * 11363d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 11373d14c5d2SYehuda Sadeh * 11383d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 11393d14c5d2SYehuda Sadeh */ 11406f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 114138d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 11423d14c5d2SYehuda Sadeh { 11435b191d99SSage Weil struct ceph_pg pgid; 11443d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 11453d14c5d2SYehuda Sadeh int o = -1, num = 0; 11463d14c5d2SYehuda Sadeh int err; 11473d14c5d2SYehuda Sadeh 11486f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 114941766f87SAlex Elder err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, 115041766f87SAlex Elder ceph_file_layout_pg_pool(req->r_file_layout)); 11516f6c7006SSage Weil if (err) { 11526f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 11533d14c5d2SYehuda Sadeh return err; 11546f6c7006SSage Weil } 11553d14c5d2SYehuda Sadeh req->r_pgid = pgid; 11563d14c5d2SYehuda Sadeh 11573d14c5d2SYehuda Sadeh err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); 11583d14c5d2SYehuda Sadeh if (err > 0) { 11593d14c5d2SYehuda Sadeh o = acting[0]; 11603d14c5d2SYehuda Sadeh num = err; 11613d14c5d2SYehuda Sadeh } 11623d14c5d2SYehuda Sadeh 116338d6453cSSage Weil if ((!force_resend && 116438d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 11653d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 11663d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 11673d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 11683d14c5d2SYehuda Sadeh (req->r_osd == NULL && o == -1)) 11693d14c5d2SYehuda Sadeh return 0; /* no change */ 11703d14c5d2SYehuda Sadeh 11715b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 11725b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 11733d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 11743d14c5d2SYehuda Sadeh 11753d14c5d2SYehuda Sadeh /* record full pg acting set */ 11763d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 11773d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 11783d14c5d2SYehuda Sadeh 11793d14c5d2SYehuda Sadeh if (req->r_osd) { 11803d14c5d2SYehuda Sadeh __cancel_request(req); 11813d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 11823d14c5d2SYehuda Sadeh req->r_osd = NULL; 11833d14c5d2SYehuda Sadeh } 11843d14c5d2SYehuda Sadeh 11853d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 11863d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 11873d14c5d2SYehuda Sadeh err = -ENOMEM; 1188e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 11896f6c7006SSage Weil if (!req->r_osd) { 11906f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 11913d14c5d2SYehuda Sadeh goto out; 11926f6c7006SSage Weil } 11933d14c5d2SYehuda Sadeh 11946f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 11953d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 11963d14c5d2SYehuda Sadeh 1197b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1198b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1199b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 12003d14c5d2SYehuda Sadeh } 12013d14c5d2SYehuda Sadeh 12023d14c5d2SYehuda Sadeh if (req->r_osd) { 12033d14c5d2SYehuda Sadeh __remove_osd_from_lru(req->r_osd); 1204ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1205ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 12066f6c7006SSage Weil } else { 1207ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 12083d14c5d2SYehuda Sadeh } 12093d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 12103d14c5d2SYehuda Sadeh 12113d14c5d2SYehuda Sadeh out: 12123d14c5d2SYehuda Sadeh return err; 12133d14c5d2SYehuda Sadeh } 12143d14c5d2SYehuda Sadeh 12153d14c5d2SYehuda Sadeh /* 12163d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 12173d14c5d2SYehuda Sadeh */ 121856e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 12193d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12203d14c5d2SYehuda Sadeh { 12211b83bef2SSage Weil void *p; 12223d14c5d2SYehuda Sadeh 12231b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 12241b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 12251b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 12263d14c5d2SYehuda Sadeh 12271b83bef2SSage Weil /* fill in message content that changes each time we send it */ 12281b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 12291b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 12301b83bef2SSage Weil put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); 12311b83bef2SSage Weil p = req->r_request_pgid; 12321b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 12331b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 12341b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 12351b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 12361b83bef2SSage Weil sizeof(req->r_reassert_version)); 12372169aea6SSage Weil 12383d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 12393d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 12403d14c5d2SYehuda Sadeh 12413d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 12423d14c5d2SYehuda Sadeh ceph_con_send(&req->r_osd->o_con, req->r_request); 12433d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 12443d14c5d2SYehuda Sadeh } 12453d14c5d2SYehuda Sadeh 12463d14c5d2SYehuda Sadeh /* 12476f6c7006SSage Weil * Send any requests in the queue (req_unsent). 12486f6c7006SSage Weil */ 1249f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 12506f6c7006SSage Weil { 12516f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 12526f6c7006SSage Weil 1253f9d25199SAlex Elder dout("__send_queued\n"); 1254f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 12556f6c7006SSage Weil __send_request(osdc, req); 12566f6c7006SSage Weil } 12576f6c7006SSage Weil 12586f6c7006SSage Weil /* 12593d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 12603d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 12613d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 12623d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 12633d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 12643d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 12653d14c5d2SYehuda Sadeh * there are no open requests). 12663d14c5d2SYehuda Sadeh */ 12673d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 12683d14c5d2SYehuda Sadeh { 12693d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 12703d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 127183aff95eSSage Weil struct ceph_osd_request *req; 12723d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12733d14c5d2SYehuda Sadeh unsigned long keepalive = 12743d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 12753d14c5d2SYehuda Sadeh struct list_head slow_osds; 12763d14c5d2SYehuda Sadeh dout("timeout\n"); 12773d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 12783d14c5d2SYehuda Sadeh 12793d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 12803d14c5d2SYehuda Sadeh 12813d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 12823d14c5d2SYehuda Sadeh 12833d14c5d2SYehuda Sadeh /* 12843d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 12853d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 12863d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 12873d14c5d2SYehuda Sadeh */ 12883d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 12893d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 12903d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 12913d14c5d2SYehuda Sadeh break; 12923d14c5d2SYehuda Sadeh 12933d14c5d2SYehuda Sadeh osd = req->r_osd; 12943d14c5d2SYehuda Sadeh BUG_ON(!osd); 12953d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 12963d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 12973d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 12983d14c5d2SYehuda Sadeh } 12993d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 13003d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 13013d14c5d2SYehuda Sadeh o_keepalive_item); 13023d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 13033d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 13043d14c5d2SYehuda Sadeh } 13053d14c5d2SYehuda Sadeh 13063d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1307f9d25199SAlex Elder __send_queued(osdc); 13083d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 13093d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 13103d14c5d2SYehuda Sadeh } 13113d14c5d2SYehuda Sadeh 13123d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 13133d14c5d2SYehuda Sadeh { 13143d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 13153d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 13163d14c5d2SYehuda Sadeh osds_timeout_work.work); 13173d14c5d2SYehuda Sadeh unsigned long delay = 13183d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 13193d14c5d2SYehuda Sadeh 13203d14c5d2SYehuda Sadeh dout("osds timeout\n"); 13213d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1322aca420bcSSage Weil remove_old_osds(osdc); 13233d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 13243d14c5d2SYehuda Sadeh 13253d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 13263d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 13273d14c5d2SYehuda Sadeh } 13283d14c5d2SYehuda Sadeh 132925845472SSage Weil static void complete_request(struct ceph_osd_request *req) 133025845472SSage Weil { 133125845472SSage Weil if (req->r_safe_callback) 133225845472SSage Weil req->r_safe_callback(req, NULL); 133325845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 133425845472SSage Weil } 133525845472SSage Weil 13363d14c5d2SYehuda Sadeh /* 13373d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 13383d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 13393d14c5d2SYehuda Sadeh */ 13403d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 13413d14c5d2SYehuda Sadeh struct ceph_connection *con) 13423d14c5d2SYehuda Sadeh { 13431b83bef2SSage Weil void *p, *end; 13443d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 13453d14c5d2SYehuda Sadeh u64 tid; 13461b83bef2SSage Weil int object_len; 134779528734SAlex Elder unsigned int numops; 134879528734SAlex Elder int payload_len, flags; 13493d14c5d2SYehuda Sadeh s32 result; 13501b83bef2SSage Weil s32 retry_attempt; 13511b83bef2SSage Weil struct ceph_pg pg; 13521b83bef2SSage Weil int err; 13531b83bef2SSage Weil u32 reassert_epoch; 13541b83bef2SSage Weil u64 reassert_version; 13551b83bef2SSage Weil u32 osdmap_epoch; 13560d5af164SAlex Elder int already_completed; 13579fc6e064SAlex Elder u32 bytes; 135879528734SAlex Elder unsigned int i; 13593d14c5d2SYehuda Sadeh 13603d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 13611b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 13621b83bef2SSage Weil 13631b83bef2SSage Weil p = msg->front.iov_base; 13641b83bef2SSage Weil end = p + msg->front.iov_len; 13651b83bef2SSage Weil 13661b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 13671b83bef2SSage Weil object_len = ceph_decode_32(&p); 13681b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 13691b83bef2SSage Weil p += object_len; 13701b83bef2SSage Weil 1371ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 13721b83bef2SSage Weil if (err) 13733d14c5d2SYehuda Sadeh goto bad; 13741b83bef2SSage Weil 13751b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 13761b83bef2SSage Weil flags = ceph_decode_64(&p); 13771b83bef2SSage Weil result = ceph_decode_32(&p); 13781b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 13791b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 13801b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 13811b83bef2SSage Weil 13823d14c5d2SYehuda Sadeh /* lookup */ 13833d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 13843d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 13853d14c5d2SYehuda Sadeh if (req == NULL) { 13863d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 13878058fd45SAlex Elder goto bad_mutex; 13883d14c5d2SYehuda Sadeh } 13893d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 13901b83bef2SSage Weil 13911b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 13921b83bef2SSage Weil req, result); 13931b83bef2SSage Weil 13941b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 13951b83bef2SSage Weil numops = ceph_decode_32(&p); 13961b83bef2SSage Weil if (numops > CEPH_OSD_MAX_OP) 13971b83bef2SSage Weil goto bad_put; 13981b83bef2SSage Weil if (numops != req->r_num_ops) 13991b83bef2SSage Weil goto bad_put; 14001b83bef2SSage Weil payload_len = 0; 14011b83bef2SSage Weil ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); 14021b83bef2SSage Weil for (i = 0; i < numops; i++) { 14031b83bef2SSage Weil struct ceph_osd_op *op = p; 14041b83bef2SSage Weil int len; 14051b83bef2SSage Weil 14061b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 14071b83bef2SSage Weil req->r_reply_op_len[i] = len; 14081b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 14091b83bef2SSage Weil payload_len += len; 14101b83bef2SSage Weil p += sizeof(*op); 14111b83bef2SSage Weil } 14129fc6e064SAlex Elder bytes = le32_to_cpu(msg->hdr.data_len); 14139fc6e064SAlex Elder if (payload_len != bytes) { 14141b83bef2SSage Weil pr_warning("sum of op payload lens %d != data_len %d", 14159fc6e064SAlex Elder payload_len, bytes); 14161b83bef2SSage Weil goto bad_put; 14171b83bef2SSage Weil } 14181b83bef2SSage Weil 14191b83bef2SSage Weil ceph_decode_need(&p, end, 4 + numops * 4, bad); 14201b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 14211b83bef2SSage Weil for (i = 0; i < numops; i++) 14221b83bef2SSage Weil req->r_reply_op_result[i] = ceph_decode_32(&p); 14233d14c5d2SYehuda Sadeh 14243d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 14253d14c5d2SYehuda Sadeh 14261b83bef2SSage Weil req->r_result = result; 14273d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 14283d14c5d2SYehuda Sadeh bytes); 14293d14c5d2SYehuda Sadeh if (req->r_result == 0) 14303d14c5d2SYehuda Sadeh req->r_result = bytes; 14313d14c5d2SYehuda Sadeh 14323d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 14331b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 14341b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 14353d14c5d2SYehuda Sadeh 14363d14c5d2SYehuda Sadeh req->r_got_reply = 1; 14373d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 14383d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 14393d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14403d14c5d2SYehuda Sadeh goto done; 14413d14c5d2SYehuda Sadeh } 14423d14c5d2SYehuda Sadeh 14433d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 14443d14c5d2SYehuda Sadeh 1445a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1446a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1447a40c4f10SYehuda Sadeh 14483d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 14493d14c5d2SYehuda Sadeh if (result < 0 || 14503d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 14513d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 14523d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 14533d14c5d2SYehuda Sadeh 14540d5af164SAlex Elder already_completed = req->r_completed; 14550d5af164SAlex Elder req->r_completed = 1; 14563d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14570d5af164SAlex Elder if (already_completed) 14580d5af164SAlex Elder goto done; 14593d14c5d2SYehuda Sadeh 14603d14c5d2SYehuda Sadeh if (req->r_callback) 14613d14c5d2SYehuda Sadeh req->r_callback(req, msg); 14623d14c5d2SYehuda Sadeh else 14633d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 14643d14c5d2SYehuda Sadeh 146525845472SSage Weil if (flags & CEPH_OSD_FLAG_ONDISK) 146625845472SSage Weil complete_request(req); 14673d14c5d2SYehuda Sadeh 14683d14c5d2SYehuda Sadeh done: 1469a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 14703d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 14713d14c5d2SYehuda Sadeh return; 14723d14c5d2SYehuda Sadeh 14731b83bef2SSage Weil bad_put: 14741b83bef2SSage Weil ceph_osdc_put_request(req); 14758058fd45SAlex Elder bad_mutex: 14768058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 14773d14c5d2SYehuda Sadeh bad: 14781b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 14791b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 14803d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 14813d14c5d2SYehuda Sadeh } 14823d14c5d2SYehuda Sadeh 14836f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 14843d14c5d2SYehuda Sadeh { 14853d14c5d2SYehuda Sadeh struct rb_node *p, *n; 14863d14c5d2SYehuda Sadeh 14873d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 14886f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 14893d14c5d2SYehuda Sadeh 14903d14c5d2SYehuda Sadeh n = rb_next(p); 14913d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 14923d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 14933d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 14943d14c5d2SYehuda Sadeh osd->o_osd), 14953d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 14963d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 14973d14c5d2SYehuda Sadeh } 14983d14c5d2SYehuda Sadeh } 14993d14c5d2SYehuda Sadeh 15003d14c5d2SYehuda Sadeh /* 15016f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 15026f6c7006SSage Weil * no osd, request a new map. 15033d14c5d2SYehuda Sadeh * 1504e6d50f67SAlex Elder * Caller should hold map_sem for read. 15053d14c5d2SYehuda Sadeh */ 150638d6453cSSage Weil static void kick_requests(struct ceph_osd_client *osdc, int force_resend) 15073d14c5d2SYehuda Sadeh { 1508a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 15096f6c7006SSage Weil struct rb_node *p; 15106f6c7006SSage Weil int needmap = 0; 15116f6c7006SSage Weil int err; 15123d14c5d2SYehuda Sadeh 151338d6453cSSage Weil dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); 15143d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 15156194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 15166f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 15176194ea89SSage Weil p = rb_next(p); 1518ab60b16dSAlex Elder 1519ab60b16dSAlex Elder /* 1520ab60b16dSAlex Elder * For linger requests that have not yet been 1521ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1522ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1523ab60b16dSAlex Elder * the request before re-registering it as a linger 1524ab60b16dSAlex Elder * request to ensure the __map_request() below 1525ab60b16dSAlex Elder * will decide it needs to be sent. 1526ab60b16dSAlex Elder */ 1527ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1528ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1529ab60b16dSAlex Elder req, req->r_tid, 1530ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 1531ab60b16dSAlex Elder __unregister_request(osdc, req); 1532ab60b16dSAlex Elder __register_linger_request(osdc, req); 1533ab60b16dSAlex Elder continue; 1534ab60b16dSAlex Elder } 1535ab60b16dSAlex Elder 153638d6453cSSage Weil err = __map_request(osdc, req, force_resend); 15376f6c7006SSage Weil if (err < 0) 15386f6c7006SSage Weil continue; /* error */ 15396f6c7006SSage Weil if (req->r_osd == NULL) { 15406f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 15416f6c7006SSage Weil needmap++; /* request a newer map */ 15426f6c7006SSage Weil } else if (err > 0) { 15436194ea89SSage Weil if (!req->r_linger) { 15446194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 15456194ea89SSage Weil req->r_tid, 15466f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 15476f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 15486f6c7006SSage Weil } 15496f6c7006SSage Weil } 15506194ea89SSage Weil } 1551a40c4f10SYehuda Sadeh 1552a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 1553a40c4f10SYehuda Sadeh r_linger_item) { 1554a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 1555a40c4f10SYehuda Sadeh 155638d6453cSSage Weil err = __map_request(osdc, req, force_resend); 1557ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 1558a40c4f10SYehuda Sadeh if (err == 0) 1559a40c4f10SYehuda Sadeh continue; /* no change and no osd was specified */ 1560a40c4f10SYehuda Sadeh if (err < 0) 1561a40c4f10SYehuda Sadeh continue; /* hrm! */ 1562a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 1563a40c4f10SYehuda Sadeh dout("tid %llu maps to no valid osd\n", req->r_tid); 1564a40c4f10SYehuda Sadeh needmap++; /* request a newer map */ 1565a40c4f10SYehuda Sadeh continue; 1566a40c4f10SYehuda Sadeh } 1567a40c4f10SYehuda Sadeh 1568a40c4f10SYehuda Sadeh dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, 1569a40c4f10SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 1570a40c4f10SYehuda Sadeh __register_request(osdc, req); 1571c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 1572a40c4f10SYehuda Sadeh } 15733d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 15743d14c5d2SYehuda Sadeh 15753d14c5d2SYehuda Sadeh if (needmap) { 15763d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 15773d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 15783d14c5d2SYehuda Sadeh } 1579e6d50f67SAlex Elder reset_changed_osds(osdc); 15803d14c5d2SYehuda Sadeh } 15816f6c7006SSage Weil 15826f6c7006SSage Weil 15833d14c5d2SYehuda Sadeh /* 15843d14c5d2SYehuda Sadeh * Process updated osd map. 15853d14c5d2SYehuda Sadeh * 15863d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 15873d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 15883d14c5d2SYehuda Sadeh * off to different OSDs as needed. 15893d14c5d2SYehuda Sadeh */ 15903d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 15913d14c5d2SYehuda Sadeh { 15923d14c5d2SYehuda Sadeh void *p, *end, *next; 15933d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 15943d14c5d2SYehuda Sadeh u32 epoch; 15953d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 15963d14c5d2SYehuda Sadeh int err; 15973d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 15983d14c5d2SYehuda Sadeh 15993d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 16003d14c5d2SYehuda Sadeh p = msg->front.iov_base; 16013d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 16023d14c5d2SYehuda Sadeh 16033d14c5d2SYehuda Sadeh /* verify fsid */ 16043d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 16053d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 16063d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 16073d14c5d2SYehuda Sadeh return; 16083d14c5d2SYehuda Sadeh 16093d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 16103d14c5d2SYehuda Sadeh 16113d14c5d2SYehuda Sadeh /* incremental maps */ 16123d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 16133d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 16143d14c5d2SYehuda Sadeh while (nr_maps > 0) { 16153d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 16163d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 16173d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 16183d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 16193d14c5d2SYehuda Sadeh next = p + maplen; 16203d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 16213d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 16223d14c5d2SYehuda Sadeh epoch, maplen); 16233d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 16243d14c5d2SYehuda Sadeh osdc->osdmap, 162515d9882cSAlex Elder &osdc->client->msgr); 16263d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 16273d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 16283d14c5d2SYehuda Sadeh goto bad; 16293d14c5d2SYehuda Sadeh } 16303d14c5d2SYehuda Sadeh BUG_ON(!newmap); 16313d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 16323d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 16333d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 16343d14c5d2SYehuda Sadeh } 163538d6453cSSage Weil kick_requests(osdc, 0); 16363d14c5d2SYehuda Sadeh } else { 16373d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 16383d14c5d2SYehuda Sadeh epoch, maplen); 16393d14c5d2SYehuda Sadeh } 16403d14c5d2SYehuda Sadeh p = next; 16413d14c5d2SYehuda Sadeh nr_maps--; 16423d14c5d2SYehuda Sadeh } 16433d14c5d2SYehuda Sadeh if (newmap) 16443d14c5d2SYehuda Sadeh goto done; 16453d14c5d2SYehuda Sadeh 16463d14c5d2SYehuda Sadeh /* full maps */ 16473d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 16483d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 16493d14c5d2SYehuda Sadeh while (nr_maps) { 16503d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 16513d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 16523d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 16533d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 16543d14c5d2SYehuda Sadeh if (nr_maps > 1) { 16553d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 16563d14c5d2SYehuda Sadeh epoch, maplen); 16573d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 16583d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 16593d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 16603d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 16613d14c5d2SYehuda Sadeh } else { 166238d6453cSSage Weil int skipped_map = 0; 166338d6453cSSage Weil 16643d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 16653d14c5d2SYehuda Sadeh newmap = osdmap_decode(&p, p+maplen); 16663d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 16673d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 16683d14c5d2SYehuda Sadeh goto bad; 16693d14c5d2SYehuda Sadeh } 16703d14c5d2SYehuda Sadeh BUG_ON(!newmap); 16713d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 16723d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 167338d6453cSSage Weil if (oldmap) { 167438d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 167538d6453cSSage Weil skipped_map = 1; 16763d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 167738d6453cSSage Weil } 167838d6453cSSage Weil kick_requests(osdc, skipped_map); 16793d14c5d2SYehuda Sadeh } 16803d14c5d2SYehuda Sadeh p += maplen; 16813d14c5d2SYehuda Sadeh nr_maps--; 16823d14c5d2SYehuda Sadeh } 16833d14c5d2SYehuda Sadeh 16843d14c5d2SYehuda Sadeh done: 16853d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 16863d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 1687cd634fb6SSage Weil 1688cd634fb6SSage Weil /* 1689cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 1690cd634fb6SSage Weil * we find out when we are no longer full and stop returning 1691cd634fb6SSage Weil * ENOSPC. 1692cd634fb6SSage Weil */ 1693cd634fb6SSage Weil if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) 1694cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 1695cd634fb6SSage Weil 1696f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 1697f9d25199SAlex Elder __send_queued(osdc); 1698f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 16993d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 17003d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 17013d14c5d2SYehuda Sadeh return; 17023d14c5d2SYehuda Sadeh 17033d14c5d2SYehuda Sadeh bad: 17043d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 17053d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 17063d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 17073d14c5d2SYehuda Sadeh return; 17083d14c5d2SYehuda Sadeh } 17093d14c5d2SYehuda Sadeh 17103d14c5d2SYehuda Sadeh /* 1711a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 1712a40c4f10SYehuda Sadeh * 1713a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 1714a40c4f10SYehuda Sadeh */ 1715a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 1716a40c4f10SYehuda Sadeh { 1717a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 1718a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 1719a40c4f10SYehuda Sadeh 1720a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 1721a40c4f10SYehuda Sadeh kfree(event); 1722a40c4f10SYehuda Sadeh } 1723a40c4f10SYehuda Sadeh 1724a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 1725a40c4f10SYehuda Sadeh { 1726a40c4f10SYehuda Sadeh kref_get(&event->kref); 1727a40c4f10SYehuda Sadeh } 1728a40c4f10SYehuda Sadeh 1729a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 1730a40c4f10SYehuda Sadeh { 1731a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 1732a40c4f10SYehuda Sadeh } 1733a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 1734a40c4f10SYehuda Sadeh 1735a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 1736a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 1737a40c4f10SYehuda Sadeh { 1738a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1739a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1740a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1741a40c4f10SYehuda Sadeh 1742a40c4f10SYehuda Sadeh while (*p) { 1743a40c4f10SYehuda Sadeh parent = *p; 1744a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1745a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 1746a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1747a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 1748a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1749a40c4f10SYehuda Sadeh else 1750a40c4f10SYehuda Sadeh BUG(); 1751a40c4f10SYehuda Sadeh } 1752a40c4f10SYehuda Sadeh 1753a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 1754a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 1755a40c4f10SYehuda Sadeh } 1756a40c4f10SYehuda Sadeh 1757a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 1758a40c4f10SYehuda Sadeh u64 cookie) 1759a40c4f10SYehuda Sadeh { 1760a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1761a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1762a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1763a40c4f10SYehuda Sadeh 1764a40c4f10SYehuda Sadeh while (*p) { 1765a40c4f10SYehuda Sadeh parent = *p; 1766a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1767a40c4f10SYehuda Sadeh if (cookie < event->cookie) 1768a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1769a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 1770a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1771a40c4f10SYehuda Sadeh else 1772a40c4f10SYehuda Sadeh return event; 1773a40c4f10SYehuda Sadeh } 1774a40c4f10SYehuda Sadeh return NULL; 1775a40c4f10SYehuda Sadeh } 1776a40c4f10SYehuda Sadeh 1777a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 1778a40c4f10SYehuda Sadeh { 1779a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1780a40c4f10SYehuda Sadeh 1781a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 1782a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 1783a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 1784a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1785a40c4f10SYehuda Sadeh } else { 1786a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 1787a40c4f10SYehuda Sadeh } 1788a40c4f10SYehuda Sadeh } 1789a40c4f10SYehuda Sadeh 1790a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 1791a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 17923c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 1793a40c4f10SYehuda Sadeh { 1794a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1795a40c4f10SYehuda Sadeh 1796a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 1797a40c4f10SYehuda Sadeh if (!event) 1798a40c4f10SYehuda Sadeh return -ENOMEM; 1799a40c4f10SYehuda Sadeh 1800a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 1801a40c4f10SYehuda Sadeh event->cb = event_cb; 18023c663bbdSAlex Elder event->one_shot = 0; 1803a40c4f10SYehuda Sadeh event->data = data; 1804a40c4f10SYehuda Sadeh event->osdc = osdc; 1805a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 18063ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 1807a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 1808a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 1809a40c4f10SYehuda Sadeh 1810a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1811a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 1812a40c4f10SYehuda Sadeh __insert_event(osdc, event); 1813a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1814a40c4f10SYehuda Sadeh 1815a40c4f10SYehuda Sadeh *pevent = event; 1816a40c4f10SYehuda Sadeh return 0; 1817a40c4f10SYehuda Sadeh } 1818a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 1819a40c4f10SYehuda Sadeh 1820a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 1821a40c4f10SYehuda Sadeh { 1822a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1823a40c4f10SYehuda Sadeh 1824a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 1825a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1826a40c4f10SYehuda Sadeh __remove_event(event); 1827a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1828a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 1829a40c4f10SYehuda Sadeh } 1830a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 1831a40c4f10SYehuda Sadeh 1832a40c4f10SYehuda Sadeh 1833a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 1834a40c4f10SYehuda Sadeh { 1835a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 1836a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 1837a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 1838a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 1839a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 1840a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 1841a40c4f10SYehuda Sadeh 1842a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 1843a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 1844a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 1845a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1846a40c4f10SYehuda Sadeh kfree(event_work); 1847a40c4f10SYehuda Sadeh } 1848a40c4f10SYehuda Sadeh 1849a40c4f10SYehuda Sadeh 1850a40c4f10SYehuda Sadeh /* 1851a40c4f10SYehuda Sadeh * Process osd watch notifications 1852a40c4f10SYehuda Sadeh */ 18533c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 18543c663bbdSAlex Elder struct ceph_msg *msg) 1855a40c4f10SYehuda Sadeh { 1856a40c4f10SYehuda Sadeh void *p, *end; 1857a40c4f10SYehuda Sadeh u8 proto_ver; 1858a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 1859a40c4f10SYehuda Sadeh u8 opcode; 1860a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1861a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 1862a40c4f10SYehuda Sadeh 1863a40c4f10SYehuda Sadeh p = msg->front.iov_base; 1864a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 1865a40c4f10SYehuda Sadeh 1866a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 1867a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 1868a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 1869a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 1870a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 1871a40c4f10SYehuda Sadeh 1872a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1873a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 1874a40c4f10SYehuda Sadeh if (event) { 18753c663bbdSAlex Elder BUG_ON(event->one_shot); 1876a40c4f10SYehuda Sadeh get_event(event); 1877a40c4f10SYehuda Sadeh } 1878a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1879a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 1880a40c4f10SYehuda Sadeh cookie, ver, event); 1881a40c4f10SYehuda Sadeh if (event) { 1882a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 1883a40c4f10SYehuda Sadeh if (!event_work) { 1884a40c4f10SYehuda Sadeh dout("ERROR: could not allocate event_work\n"); 1885a40c4f10SYehuda Sadeh goto done_err; 1886a40c4f10SYehuda Sadeh } 18876b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 1888a40c4f10SYehuda Sadeh event_work->event = event; 1889a40c4f10SYehuda Sadeh event_work->ver = ver; 1890a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 1891a40c4f10SYehuda Sadeh event_work->opcode = opcode; 1892a40c4f10SYehuda Sadeh if (!queue_work(osdc->notify_wq, &event_work->work)) { 1893a40c4f10SYehuda Sadeh dout("WARNING: failed to queue notify event work\n"); 1894a40c4f10SYehuda Sadeh goto done_err; 1895a40c4f10SYehuda Sadeh } 1896a40c4f10SYehuda Sadeh } 1897a40c4f10SYehuda Sadeh 1898a40c4f10SYehuda Sadeh return; 1899a40c4f10SYehuda Sadeh 1900a40c4f10SYehuda Sadeh done_err: 1901a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1902a40c4f10SYehuda Sadeh return; 1903a40c4f10SYehuda Sadeh 1904a40c4f10SYehuda Sadeh bad: 1905a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 1906a40c4f10SYehuda Sadeh return; 1907a40c4f10SYehuda Sadeh } 1908a40c4f10SYehuda Sadeh 190970636773SAlex Elder static void ceph_osdc_msg_data_set(struct ceph_msg *msg, 191070636773SAlex Elder struct ceph_osd_data *osd_data) 191170636773SAlex Elder { 191223c08a9cSAlex Elder u64 length = ceph_osd_data_length(osd_data); 191323c08a9cSAlex Elder 191470636773SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 191523c08a9cSAlex Elder BUG_ON(length > (u64) SIZE_MAX); 191623c08a9cSAlex Elder if (length) 191770636773SAlex Elder ceph_msg_data_set_pages(msg, osd_data->pages, 191823c08a9cSAlex Elder length, osd_data->alignment); 19199a5e6d09SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 192023c08a9cSAlex Elder BUG_ON(!length); 19219a5e6d09SAlex Elder ceph_msg_data_set_pagelist(msg, osd_data->pagelist); 192270636773SAlex Elder #ifdef CONFIG_BLOCK 192370636773SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 192423c08a9cSAlex Elder ceph_msg_data_set_bio(msg, osd_data->bio, length); 192570636773SAlex Elder #endif 192670636773SAlex Elder } else { 192770636773SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 192870636773SAlex Elder } 192970636773SAlex Elder } 193070636773SAlex Elder 1931a40c4f10SYehuda Sadeh /* 19323d14c5d2SYehuda Sadeh * Register request, send initial attempt. 19333d14c5d2SYehuda Sadeh */ 19343d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 19353d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 19363d14c5d2SYehuda Sadeh bool nofail) 19373d14c5d2SYehuda Sadeh { 19383d14c5d2SYehuda Sadeh int rc = 0; 19393d14c5d2SYehuda Sadeh 194070636773SAlex Elder /* Set up response incoming data and request outgoing data fields */ 19410fff87ecSAlex Elder 194270636773SAlex Elder ceph_osdc_msg_data_set(req->r_reply, &req->r_data_in); 194370636773SAlex Elder ceph_osdc_msg_data_set(req->r_request, &req->r_data_out); 19443d14c5d2SYehuda Sadeh 19453d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 19463d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1947dc4b870cSAlex Elder __register_request(osdc, req); 194892451b49SAlex Elder WARN_ON(req->r_sent); 194938d6453cSSage Weil rc = __map_request(osdc, req, 0); 19509d6fcb08SSage Weil if (rc < 0) { 19519d6fcb08SSage Weil if (nofail) { 19529d6fcb08SSage Weil dout("osdc_start_request failed map, " 19539d6fcb08SSage Weil " will retry %lld\n", req->r_tid); 19549d6fcb08SSage Weil rc = 0; 19559d6fcb08SSage Weil } 1956234af26fSDan Carpenter goto out_unlock; 19579d6fcb08SSage Weil } 19586f6c7006SSage Weil if (req->r_osd == NULL) { 19596f6c7006SSage Weil dout("send_request %p no up osds in pg\n", req); 19606f6c7006SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 19616f6c7006SSage Weil } else { 19627e2766a1SAlex Elder __send_queued(osdc); 196356e925b6SSage Weil } 19643d14c5d2SYehuda Sadeh rc = 0; 1965234af26fSDan Carpenter out_unlock: 19663d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19673d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 19683d14c5d2SYehuda Sadeh return rc; 19693d14c5d2SYehuda Sadeh } 19703d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 19713d14c5d2SYehuda Sadeh 19723d14c5d2SYehuda Sadeh /* 19733d14c5d2SYehuda Sadeh * wait for a request to complete 19743d14c5d2SYehuda Sadeh */ 19753d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 19763d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 19773d14c5d2SYehuda Sadeh { 19783d14c5d2SYehuda Sadeh int rc; 19793d14c5d2SYehuda Sadeh 19803d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 19813d14c5d2SYehuda Sadeh if (rc < 0) { 19823d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19833d14c5d2SYehuda Sadeh __cancel_request(req); 19843d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 19853d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 198625845472SSage Weil complete_request(req); 19873d14c5d2SYehuda Sadeh dout("wait_request tid %llu canceled/timed out\n", req->r_tid); 19883d14c5d2SYehuda Sadeh return rc; 19893d14c5d2SYehuda Sadeh } 19903d14c5d2SYehuda Sadeh 19913d14c5d2SYehuda Sadeh dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); 19923d14c5d2SYehuda Sadeh return req->r_result; 19933d14c5d2SYehuda Sadeh } 19943d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 19953d14c5d2SYehuda Sadeh 19963d14c5d2SYehuda Sadeh /* 19973d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 19983d14c5d2SYehuda Sadeh */ 19993d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 20003d14c5d2SYehuda Sadeh { 20013d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 20023d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 20033d14c5d2SYehuda Sadeh 20043d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 20053d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 20063d14c5d2SYehuda Sadeh while (1) { 20073d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 20083d14c5d2SYehuda Sadeh if (!req) 20093d14c5d2SYehuda Sadeh break; 20103d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 20113d14c5d2SYehuda Sadeh break; 20123d14c5d2SYehuda Sadeh 20133d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 20143d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 20153d14c5d2SYehuda Sadeh continue; 20163d14c5d2SYehuda Sadeh 20173d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 20183d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 20193d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 20203d14c5d2SYehuda Sadeh req->r_tid, last_tid); 20213d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 20223d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 20233d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 20243d14c5d2SYehuda Sadeh } 20253d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 20263d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 20273d14c5d2SYehuda Sadeh } 20283d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 20293d14c5d2SYehuda Sadeh 20303d14c5d2SYehuda Sadeh /* 20313d14c5d2SYehuda Sadeh * init, shutdown 20323d14c5d2SYehuda Sadeh */ 20333d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 20343d14c5d2SYehuda Sadeh { 20353d14c5d2SYehuda Sadeh int err; 20363d14c5d2SYehuda Sadeh 20373d14c5d2SYehuda Sadeh dout("init\n"); 20383d14c5d2SYehuda Sadeh osdc->client = client; 20393d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 20403d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 20413d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 20423d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 20433d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 20443d14c5d2SYehuda Sadeh osdc->last_tid = 0; 20453d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 20463d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 20473d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 20483d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 20496f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 20506f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2051a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 20523d14c5d2SYehuda Sadeh osdc->num_requests = 0; 20533d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 20543d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2055a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2056a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2057a40c4f10SYehuda Sadeh osdc->event_count = 0; 20583d14c5d2SYehuda Sadeh 20593d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 20603d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 20613d14c5d2SYehuda Sadeh 20623d14c5d2SYehuda Sadeh err = -ENOMEM; 20633d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 20643d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 20653d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 20663d14c5d2SYehuda Sadeh goto out; 20673d14c5d2SYehuda Sadeh 2068d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2069d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 20703d14c5d2SYehuda Sadeh "osd_op"); 20713d14c5d2SYehuda Sadeh if (err < 0) 20723d14c5d2SYehuda Sadeh goto out_mempool; 2073d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 20743d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 20753d14c5d2SYehuda Sadeh "osd_op_reply"); 20763d14c5d2SYehuda Sadeh if (err < 0) 20773d14c5d2SYehuda Sadeh goto out_msgpool; 2078a40c4f10SYehuda Sadeh 2079a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2080a40c4f10SYehuda Sadeh if (IS_ERR(osdc->notify_wq)) { 2081a40c4f10SYehuda Sadeh err = PTR_ERR(osdc->notify_wq); 2082a40c4f10SYehuda Sadeh osdc->notify_wq = NULL; 2083a40c4f10SYehuda Sadeh goto out_msgpool; 2084a40c4f10SYehuda Sadeh } 20853d14c5d2SYehuda Sadeh return 0; 20863d14c5d2SYehuda Sadeh 20873d14c5d2SYehuda Sadeh out_msgpool: 20883d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 20893d14c5d2SYehuda Sadeh out_mempool: 20903d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 20913d14c5d2SYehuda Sadeh out: 20923d14c5d2SYehuda Sadeh return err; 20933d14c5d2SYehuda Sadeh } 20943d14c5d2SYehuda Sadeh 20953d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 20963d14c5d2SYehuda Sadeh { 2097a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2098a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 20993d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 21003d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 21013d14c5d2SYehuda Sadeh if (osdc->osdmap) { 21023d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 21033d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 21043d14c5d2SYehuda Sadeh } 2105aca420bcSSage Weil remove_all_osds(osdc); 21063d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 21073d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 21083d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 21093d14c5d2SYehuda Sadeh } 21103d14c5d2SYehuda Sadeh 21113d14c5d2SYehuda Sadeh /* 21123d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 21133d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 21143d14c5d2SYehuda Sadeh */ 21153d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 21163d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 21173d14c5d2SYehuda Sadeh u64 off, u64 *plen, 21183d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2119b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 21203d14c5d2SYehuda Sadeh { 21213d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 21223d14c5d2SYehuda Sadeh int rc = 0; 21233d14c5d2SYehuda Sadeh 21243d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 21253d14c5d2SYehuda Sadeh vino.snap, off, *plen); 212679528734SAlex Elder req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1, 21273d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2128acead002SAlex Elder NULL, truncate_seq, truncate_size, 2129153e5167SAlex Elder false); 21306816282dSSage Weil if (IS_ERR(req)) 21316816282dSSage Weil return PTR_ERR(req); 21323d14c5d2SYehuda Sadeh 21333d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 21340fff87ecSAlex Elder 213543bfe5deSAlex Elder ceph_osd_data_pages_init(&req->r_data_in, pages, *plen, page_align, 213643bfe5deSAlex Elder false, false); 21373d14c5d2SYehuda Sadeh 2138e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 213943bfe5deSAlex Elder off, *plen, *plen, page_align); 21403d14c5d2SYehuda Sadeh 214179528734SAlex Elder ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); 214202ee07d3SAlex Elder 21433d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 21443d14c5d2SYehuda Sadeh if (!rc) 21453d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 21463d14c5d2SYehuda Sadeh 21473d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 21483d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 21493d14c5d2SYehuda Sadeh return rc; 21503d14c5d2SYehuda Sadeh } 21513d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 21523d14c5d2SYehuda Sadeh 21533d14c5d2SYehuda Sadeh /* 21543d14c5d2SYehuda Sadeh * do a synchronous write on N pages 21553d14c5d2SYehuda Sadeh */ 21563d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 21573d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 21583d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 21593d14c5d2SYehuda Sadeh u64 off, u64 len, 21603d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 21613d14c5d2SYehuda Sadeh struct timespec *mtime, 216224808826SAlex Elder struct page **pages, int num_pages) 21633d14c5d2SYehuda Sadeh { 21643d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 21653d14c5d2SYehuda Sadeh int rc = 0; 2166b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 21673d14c5d2SYehuda Sadeh 2168acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 216979528734SAlex Elder req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1, 21703d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 217124808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2172acead002SAlex Elder snapc, truncate_seq, truncate_size, 2173153e5167SAlex Elder true); 21746816282dSSage Weil if (IS_ERR(req)) 21756816282dSSage Weil return PTR_ERR(req); 21763d14c5d2SYehuda Sadeh 21773d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 217843bfe5deSAlex Elder ceph_osd_data_pages_init(&req->r_data_out, pages, len, page_align, 217943bfe5deSAlex Elder false, false); 218043bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 21813d14c5d2SYehuda Sadeh 218279528734SAlex Elder ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); 218302ee07d3SAlex Elder 218487f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 21853d14c5d2SYehuda Sadeh if (!rc) 21863d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 21873d14c5d2SYehuda Sadeh 21883d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 21893d14c5d2SYehuda Sadeh if (rc == 0) 21903d14c5d2SYehuda Sadeh rc = len; 21913d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 21923d14c5d2SYehuda Sadeh return rc; 21933d14c5d2SYehuda Sadeh } 21943d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 21953d14c5d2SYehuda Sadeh 21963d14c5d2SYehuda Sadeh /* 21973d14c5d2SYehuda Sadeh * handle incoming message 21983d14c5d2SYehuda Sadeh */ 21993d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 22003d14c5d2SYehuda Sadeh { 22013d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22023d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 22033d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 22043d14c5d2SYehuda Sadeh 22053d14c5d2SYehuda Sadeh if (!osd) 22063d14c5d2SYehuda Sadeh goto out; 22073d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 22083d14c5d2SYehuda Sadeh 22093d14c5d2SYehuda Sadeh switch (type) { 22103d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 22113d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 22123d14c5d2SYehuda Sadeh break; 22133d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 22143d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 22153d14c5d2SYehuda Sadeh break; 2216a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2217a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2218a40c4f10SYehuda Sadeh break; 22193d14c5d2SYehuda Sadeh 22203d14c5d2SYehuda Sadeh default: 22213d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 22223d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 22233d14c5d2SYehuda Sadeh } 22243d14c5d2SYehuda Sadeh out: 22253d14c5d2SYehuda Sadeh ceph_msg_put(msg); 22263d14c5d2SYehuda Sadeh } 22273d14c5d2SYehuda Sadeh 22283d14c5d2SYehuda Sadeh /* 22293d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 22303d14c5d2SYehuda Sadeh * pages. 22313d14c5d2SYehuda Sadeh */ 22323d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 22333d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 22343d14c5d2SYehuda Sadeh int *skip) 22353d14c5d2SYehuda Sadeh { 22363d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22373d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 22383d14c5d2SYehuda Sadeh struct ceph_msg *m; 22393d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 22403d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 22413d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 22423d14c5d2SYehuda Sadeh u64 tid; 22433d14c5d2SYehuda Sadeh 22443d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 22453d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 22463d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 22473d14c5d2SYehuda Sadeh if (!req) { 22483d14c5d2SYehuda Sadeh *skip = 1; 22493d14c5d2SYehuda Sadeh m = NULL; 2250756a16a5SSage Weil dout("get_reply unknown tid %llu from osd%d\n", tid, 22513d14c5d2SYehuda Sadeh osd->o_osd); 22523d14c5d2SYehuda Sadeh goto out; 22533d14c5d2SYehuda Sadeh } 22543d14c5d2SYehuda Sadeh 2255ace6d3a9SAlex Elder if (req->r_reply->con) 22568921d114SAlex Elder dout("%s revoking msg %p from old con %p\n", __func__, 2257ace6d3a9SAlex Elder req->r_reply, req->r_reply->con); 22588921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 22593d14c5d2SYehuda Sadeh 22603d14c5d2SYehuda Sadeh if (front > req->r_reply->front.iov_len) { 22613d14c5d2SYehuda Sadeh pr_warning("get_reply front %d > preallocated %d\n", 22623d14c5d2SYehuda Sadeh front, (int)req->r_reply->front.iov_len); 2263b61c2763SSage Weil m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); 22643d14c5d2SYehuda Sadeh if (!m) 22653d14c5d2SYehuda Sadeh goto out; 22663d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 22673d14c5d2SYehuda Sadeh req->r_reply = m; 22683d14c5d2SYehuda Sadeh } 22693d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 22703d14c5d2SYehuda Sadeh 22713d14c5d2SYehuda Sadeh if (data_len > 0) { 22720fff87ecSAlex Elder struct ceph_osd_data *osd_data = &req->r_data_in; 22730fff87ecSAlex Elder 22740fff87ecSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 22750fff87ecSAlex Elder if (osd_data->pages && 2276e0c59487SAlex Elder unlikely(osd_data->length < data_len)) { 22772ac2b7a6SAlex Elder 2278e0c59487SAlex Elder pr_warning("tid %lld reply has %d bytes " 2279e0c59487SAlex Elder "we had only %llu bytes ready\n", 2280e0c59487SAlex Elder tid, data_len, osd_data->length); 22813d14c5d2SYehuda Sadeh *skip = 1; 22823d14c5d2SYehuda Sadeh ceph_msg_put(m); 22833d14c5d2SYehuda Sadeh m = NULL; 22843d14c5d2SYehuda Sadeh goto out; 22853d14c5d2SYehuda Sadeh } 22863d14c5d2SYehuda Sadeh } 22872ac2b7a6SAlex Elder } 22883d14c5d2SYehuda Sadeh *skip = 0; 22893d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 22903d14c5d2SYehuda Sadeh 22913d14c5d2SYehuda Sadeh out: 22923d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 22933d14c5d2SYehuda Sadeh return m; 22943d14c5d2SYehuda Sadeh 22953d14c5d2SYehuda Sadeh } 22963d14c5d2SYehuda Sadeh 22973d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 22983d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 22993d14c5d2SYehuda Sadeh int *skip) 23003d14c5d2SYehuda Sadeh { 23013d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 23023d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 23033d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 23043d14c5d2SYehuda Sadeh 23051c20f2d2SAlex Elder *skip = 0; 23063d14c5d2SYehuda Sadeh switch (type) { 23073d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2308a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2309b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 23103d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 23113d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 23123d14c5d2SYehuda Sadeh default: 23133d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 23143d14c5d2SYehuda Sadeh osd->o_osd); 23153d14c5d2SYehuda Sadeh *skip = 1; 23163d14c5d2SYehuda Sadeh return NULL; 23173d14c5d2SYehuda Sadeh } 23183d14c5d2SYehuda Sadeh } 23193d14c5d2SYehuda Sadeh 23203d14c5d2SYehuda Sadeh /* 23213d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 23223d14c5d2SYehuda Sadeh */ 23233d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 23243d14c5d2SYehuda Sadeh { 23253d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 23263d14c5d2SYehuda Sadeh if (get_osd(osd)) 23273d14c5d2SYehuda Sadeh return con; 23283d14c5d2SYehuda Sadeh return NULL; 23293d14c5d2SYehuda Sadeh } 23303d14c5d2SYehuda Sadeh 23313d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 23323d14c5d2SYehuda Sadeh { 23333d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 23343d14c5d2SYehuda Sadeh put_osd(osd); 23353d14c5d2SYehuda Sadeh } 23363d14c5d2SYehuda Sadeh 23373d14c5d2SYehuda Sadeh /* 23383d14c5d2SYehuda Sadeh * authentication 23393d14c5d2SYehuda Sadeh */ 2340a3530df3SAlex Elder /* 2341a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2342a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2343a3530df3SAlex Elder */ 2344a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 23458f43fb53SAlex Elder int *proto, int force_new) 23463d14c5d2SYehuda Sadeh { 23473d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23483d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23493d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 235074f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 23513d14c5d2SYehuda Sadeh 235274f1869fSAlex Elder if (force_new && auth->authorizer) { 235327859f97SSage Weil ceph_auth_destroy_authorizer(ac, auth->authorizer); 235474f1869fSAlex Elder auth->authorizer = NULL; 23553d14c5d2SYehuda Sadeh } 235627859f97SSage Weil if (!auth->authorizer) { 235727859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2358a3530df3SAlex Elder auth); 23593d14c5d2SYehuda Sadeh if (ret) 2360a3530df3SAlex Elder return ERR_PTR(ret); 236127859f97SSage Weil } else { 236227859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 23630bed9b5cSSage Weil auth); 23640bed9b5cSSage Weil if (ret) 23650bed9b5cSSage Weil return ERR_PTR(ret); 23663d14c5d2SYehuda Sadeh } 23673d14c5d2SYehuda Sadeh *proto = ac->protocol; 236874f1869fSAlex Elder 2369a3530df3SAlex Elder return auth; 23703d14c5d2SYehuda Sadeh } 23713d14c5d2SYehuda Sadeh 23723d14c5d2SYehuda Sadeh 23733d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 23743d14c5d2SYehuda Sadeh { 23753d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23763d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23773d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 23783d14c5d2SYehuda Sadeh 237927859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 23803d14c5d2SYehuda Sadeh } 23813d14c5d2SYehuda Sadeh 23823d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 23833d14c5d2SYehuda Sadeh { 23843d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23853d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23863d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 23873d14c5d2SYehuda Sadeh 238827859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 23893d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 23903d14c5d2SYehuda Sadeh } 23913d14c5d2SYehuda Sadeh 23923d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 23933d14c5d2SYehuda Sadeh .get = get_osd_con, 23943d14c5d2SYehuda Sadeh .put = put_osd_con, 23953d14c5d2SYehuda Sadeh .dispatch = dispatch, 23963d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 23973d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 23983d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 23993d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 24003d14c5d2SYehuda Sadeh .fault = osd_reset, 24013d14c5d2SYehuda Sadeh }; 2402