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 120c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 121c54d47bfSAlex Elder { 122c54d47bfSAlex Elder if (osd_data->type != CEPH_OSD_DATA_TYPE_PAGES) 123c54d47bfSAlex Elder return; 124c54d47bfSAlex Elder 125c54d47bfSAlex Elder if (osd_data->own_pages) { 126c54d47bfSAlex Elder int num_pages; 127c54d47bfSAlex Elder 128c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 129c54d47bfSAlex Elder (u64)osd_data->length); 130c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 131c54d47bfSAlex Elder } 132c54d47bfSAlex Elder } 133c54d47bfSAlex Elder 1343d14c5d2SYehuda Sadeh /* 1353d14c5d2SYehuda Sadeh * requests 1363d14c5d2SYehuda Sadeh */ 1373d14c5d2SYehuda Sadeh void ceph_osdc_release_request(struct kref *kref) 1383d14c5d2SYehuda Sadeh { 139c54d47bfSAlex Elder struct ceph_osd_request *req; 1403d14c5d2SYehuda Sadeh 141c54d47bfSAlex Elder req = container_of(kref, struct ceph_osd_request, r_kref); 1423d14c5d2SYehuda Sadeh if (req->r_request) 1433d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 144ace6d3a9SAlex Elder if (req->r_reply) { 1458921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 146ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 147ace6d3a9SAlex Elder } 1480fff87ecSAlex Elder 149c54d47bfSAlex Elder ceph_osd_data_release(&req->r_data_in); 150c54d47bfSAlex Elder ceph_osd_data_release(&req->r_data_out); 1510fff87ecSAlex Elder 1523d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 1533d14c5d2SYehuda Sadeh if (req->r_mempool) 1543d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 1553d14c5d2SYehuda Sadeh else 1563d14c5d2SYehuda Sadeh kfree(req); 1573d14c5d2SYehuda Sadeh } 1583d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_release_request); 1593d14c5d2SYehuda Sadeh 1603d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 1613d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 1621b83bef2SSage Weil unsigned int num_ops, 1633d14c5d2SYehuda Sadeh bool use_mempool, 16454a54007SAlex Elder gfp_t gfp_flags) 1653d14c5d2SYehuda Sadeh { 1663d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1673d14c5d2SYehuda Sadeh struct ceph_msg *msg; 1681b83bef2SSage Weil size_t msg_size; 1693d14c5d2SYehuda Sadeh 1701b83bef2SSage Weil msg_size = 4 + 4 + 8 + 8 + 4+8; 1711b83bef2SSage Weil msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 1721b83bef2SSage Weil msg_size += 1 + 8 + 4 + 4; /* pg_t */ 1731b83bef2SSage Weil msg_size += 4 + MAX_OBJ_NAME_SIZE; 1741b83bef2SSage Weil msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); 1751b83bef2SSage Weil msg_size += 8; /* snapid */ 1761b83bef2SSage Weil msg_size += 8; /* snap_seq */ 1771b83bef2SSage Weil msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ 1781b83bef2SSage Weil msg_size += 4; 1793d14c5d2SYehuda Sadeh 1803d14c5d2SYehuda Sadeh if (use_mempool) { 1813d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 1823d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 1833d14c5d2SYehuda Sadeh } else { 1843d14c5d2SYehuda Sadeh req = kzalloc(sizeof(*req), gfp_flags); 1853d14c5d2SYehuda Sadeh } 1863d14c5d2SYehuda Sadeh if (req == NULL) 1873d14c5d2SYehuda Sadeh return NULL; 1883d14c5d2SYehuda Sadeh 1893d14c5d2SYehuda Sadeh req->r_osdc = osdc; 1903d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 1913d14c5d2SYehuda Sadeh 1923d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 1933d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 1943d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 195a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 1963d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 197a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 198a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_osd); 199935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 200cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 201cd43045cSSage Weil 2023d14c5d2SYehuda Sadeh /* create reply message */ 2033d14c5d2SYehuda Sadeh if (use_mempool) 2043d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 2053d14c5d2SYehuda Sadeh else 2063d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 207b61c2763SSage Weil OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 2083d14c5d2SYehuda Sadeh if (!msg) { 2093d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 2103d14c5d2SYehuda Sadeh return NULL; 2113d14c5d2SYehuda Sadeh } 2123d14c5d2SYehuda Sadeh req->r_reply = msg; 2133d14c5d2SYehuda Sadeh 214c54d47bfSAlex Elder ceph_osd_data_init(&req->r_data_in); 215c54d47bfSAlex Elder ceph_osd_data_init(&req->r_data_out); 216d50b409fSSage Weil 2173d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 2183d14c5d2SYehuda Sadeh if (use_mempool) 2193d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 2203d14c5d2SYehuda Sadeh else 221b61c2763SSage Weil msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 2223d14c5d2SYehuda Sadeh if (!msg) { 2233d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 2243d14c5d2SYehuda Sadeh return NULL; 2253d14c5d2SYehuda Sadeh } 2263d14c5d2SYehuda Sadeh 2273d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 2283d14c5d2SYehuda Sadeh 2293d14c5d2SYehuda Sadeh req->r_request = msg; 2303d14c5d2SYehuda Sadeh 2313d14c5d2SYehuda Sadeh return req; 2323d14c5d2SYehuda Sadeh } 2333d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 2343d14c5d2SYehuda Sadeh 235a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 236a8dd0a37SAlex Elder { 237a8dd0a37SAlex Elder switch (opcode) { 238a8dd0a37SAlex Elder case CEPH_OSD_OP_READ: 239a8dd0a37SAlex Elder case CEPH_OSD_OP_STAT: 240a8dd0a37SAlex Elder case CEPH_OSD_OP_MAPEXT: 241a8dd0a37SAlex Elder case CEPH_OSD_OP_MASKTRUNC: 242a8dd0a37SAlex Elder case CEPH_OSD_OP_SPARSE_READ: 243a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY: 244a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY_ACK: 245a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_VER: 246a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITE: 247a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITEFULL: 248a8dd0a37SAlex Elder case CEPH_OSD_OP_TRUNCATE: 249a8dd0a37SAlex Elder case CEPH_OSD_OP_ZERO: 250a8dd0a37SAlex Elder case CEPH_OSD_OP_DELETE: 251a8dd0a37SAlex Elder case CEPH_OSD_OP_APPEND: 252a8dd0a37SAlex Elder case CEPH_OSD_OP_STARTSYNC: 253a8dd0a37SAlex Elder case CEPH_OSD_OP_SETTRUNC: 254a8dd0a37SAlex Elder case CEPH_OSD_OP_TRIMTRUNC: 255a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPUP: 256a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPPUT: 257a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPGET: 258a8dd0a37SAlex Elder case CEPH_OSD_OP_CREATE: 259a8dd0a37SAlex Elder case CEPH_OSD_OP_ROLLBACK: 260a8dd0a37SAlex Elder case CEPH_OSD_OP_WATCH: 261a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETKEYS: 262a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALS: 263a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETHEADER: 264a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALSBYKEYS: 265a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETVALS: 266a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETHEADER: 267a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPCLEAR: 268a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPRMKEYS: 269a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAP_CMP: 270a8dd0a37SAlex Elder case CEPH_OSD_OP_CLONERANGE: 271a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_SRC_VERSION: 272a8dd0a37SAlex Elder case CEPH_OSD_OP_SRC_CMPXATTR: 273a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTR: 274a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTRS: 275a8dd0a37SAlex Elder case CEPH_OSD_OP_CMPXATTR: 276a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTR: 277a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTRS: 278a8dd0a37SAlex Elder case CEPH_OSD_OP_RESETXATTRS: 279a8dd0a37SAlex Elder case CEPH_OSD_OP_RMXATTR: 280a8dd0a37SAlex Elder case CEPH_OSD_OP_PULL: 281a8dd0a37SAlex Elder case CEPH_OSD_OP_PUSH: 282a8dd0a37SAlex Elder case CEPH_OSD_OP_BALANCEREADS: 283a8dd0a37SAlex Elder case CEPH_OSD_OP_UNBALANCEREADS: 284a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB: 285a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_RESERVE: 286a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_UNRESERVE: 287a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_STOP: 288a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_MAP: 289a8dd0a37SAlex Elder case CEPH_OSD_OP_WRLOCK: 290a8dd0a37SAlex Elder case CEPH_OSD_OP_WRUNLOCK: 291a8dd0a37SAlex Elder case CEPH_OSD_OP_RDLOCK: 292a8dd0a37SAlex Elder case CEPH_OSD_OP_RDUNLOCK: 293a8dd0a37SAlex Elder case CEPH_OSD_OP_UPLOCK: 294a8dd0a37SAlex Elder case CEPH_OSD_OP_DNLOCK: 295a8dd0a37SAlex Elder case CEPH_OSD_OP_CALL: 296a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS: 297a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS_FILTER: 298a8dd0a37SAlex Elder return true; 299a8dd0a37SAlex Elder default: 300a8dd0a37SAlex Elder return false; 301a8dd0a37SAlex Elder } 302a8dd0a37SAlex Elder } 303a8dd0a37SAlex Elder 30433803f33SAlex Elder /* 30533803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 30633803f33SAlex Elder * other information associated with them. It also serves as a 30733803f33SAlex Elder * common init routine for all the other init functions, below. 30833803f33SAlex Elder */ 30933803f33SAlex Elder void osd_req_op_init(struct ceph_osd_req_op *op, u16 opcode) 31033803f33SAlex Elder { 31133803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 31233803f33SAlex Elder 31333803f33SAlex Elder memset(op, 0, sizeof (*op)); 31433803f33SAlex Elder 31533803f33SAlex Elder op->op = opcode; 31633803f33SAlex Elder } 31733803f33SAlex Elder 31833803f33SAlex Elder void osd_req_op_extent_init(struct ceph_osd_req_op *op, u16 opcode, 31933803f33SAlex Elder u64 offset, u64 length, 32033803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 32133803f33SAlex Elder { 32233803f33SAlex Elder size_t payload_len = 0; 32333803f33SAlex Elder 32433803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); 32533803f33SAlex Elder 32633803f33SAlex Elder osd_req_op_init(op, opcode); 32733803f33SAlex Elder 32833803f33SAlex Elder op->extent.offset = offset; 32933803f33SAlex Elder op->extent.length = length; 33033803f33SAlex Elder op->extent.truncate_size = truncate_size; 33133803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 33233803f33SAlex Elder if (opcode == CEPH_OSD_OP_WRITE) 33333803f33SAlex Elder payload_len += length; 33433803f33SAlex Elder 33533803f33SAlex Elder op->payload_len = payload_len; 33633803f33SAlex Elder } 33733803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 33833803f33SAlex Elder 339e5975c7cSAlex Elder void osd_req_op_extent_update(struct ceph_osd_req_op *op, u64 length) 340e5975c7cSAlex Elder { 341e5975c7cSAlex Elder u64 previous = op->extent.length; 342e5975c7cSAlex Elder 343e5975c7cSAlex Elder if (length == previous) 344e5975c7cSAlex Elder return; /* Nothing to do */ 345e5975c7cSAlex Elder BUG_ON(length > previous); 346e5975c7cSAlex Elder 347e5975c7cSAlex Elder op->extent.length = length; 348e5975c7cSAlex Elder op->payload_len -= previous - length; 349e5975c7cSAlex Elder } 350e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 351e5975c7cSAlex Elder 35233803f33SAlex Elder void osd_req_op_cls_init(struct ceph_osd_req_op *op, u16 opcode, 35333803f33SAlex Elder const char *class, const char *method, 35433803f33SAlex Elder const void *request_data, size_t request_data_size) 35533803f33SAlex Elder { 35633803f33SAlex Elder size_t payload_len = 0; 35733803f33SAlex Elder size_t size; 35833803f33SAlex Elder 35933803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 36033803f33SAlex Elder 36133803f33SAlex Elder osd_req_op_init(op, opcode); 36233803f33SAlex Elder 36333803f33SAlex Elder op->cls.class_name = class; 36433803f33SAlex Elder size = strlen(class); 36533803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 36633803f33SAlex Elder op->cls.class_len = size; 36733803f33SAlex Elder payload_len += size; 36833803f33SAlex Elder 36933803f33SAlex Elder op->cls.method_name = method; 37033803f33SAlex Elder size = strlen(method); 37133803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 37233803f33SAlex Elder op->cls.method_len = size; 37333803f33SAlex Elder payload_len += size; 37433803f33SAlex Elder 37533803f33SAlex Elder op->cls.indata = request_data; 37633803f33SAlex Elder BUG_ON(request_data_size > (size_t) U32_MAX); 37733803f33SAlex Elder op->cls.indata_len = (u32) request_data_size; 37833803f33SAlex Elder payload_len += request_data_size; 37933803f33SAlex Elder 38033803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 38133803f33SAlex Elder 38233803f33SAlex Elder op->payload_len = payload_len; 38333803f33SAlex Elder } 38433803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 38533803f33SAlex Elder 38633803f33SAlex Elder void osd_req_op_watch_init(struct ceph_osd_req_op *op, u16 opcode, 38733803f33SAlex Elder u64 cookie, u64 version, int flag) 38833803f33SAlex Elder { 38933803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 39033803f33SAlex Elder 39133803f33SAlex Elder osd_req_op_init(op, opcode); 39233803f33SAlex Elder 39333803f33SAlex Elder op->watch.cookie = cookie; 39433803f33SAlex Elder /* op->watch.ver = version; */ /* XXX 3847 */ 39533803f33SAlex Elder op->watch.ver = cpu_to_le64(version); 39633803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 39733803f33SAlex Elder op->watch.flag = (u8) 1; 39833803f33SAlex Elder } 39933803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 40033803f33SAlex Elder 401175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 4023d14c5d2SYehuda Sadeh struct ceph_osd_op *dst, 4033d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src) 4043d14c5d2SYehuda Sadeh { 405175face2SAlex Elder u64 out_data_len = 0; 40695e072ebSAlex Elder struct ceph_pagelist *pagelist; 407175face2SAlex Elder 408a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 409a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 410a8dd0a37SAlex Elder 411a8dd0a37SAlex Elder return 0; 412a8dd0a37SAlex Elder } 4133d14c5d2SYehuda Sadeh 414065a68f9SAlex Elder switch (src->op) { 415fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 416fbfab539SAlex Elder break; 4173d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 4183d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 419175face2SAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 420175face2SAlex Elder out_data_len = src->extent.length; 421175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 422175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 4233d14c5d2SYehuda Sadeh dst->extent.truncate_size = 4243d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 4253d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 4263d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 4273d14c5d2SYehuda Sadeh break; 4283d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 42995e072ebSAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 43095e072ebSAlex Elder BUG_ON(!pagelist); 43195e072ebSAlex Elder ceph_pagelist_init(pagelist); 43295e072ebSAlex Elder 4333d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 4343d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 4353d14c5d2SYehuda Sadeh dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 43695e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.class_name, 4373d14c5d2SYehuda Sadeh src->cls.class_len); 43895e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.method_name, 4393d14c5d2SYehuda Sadeh src->cls.method_len); 44095e072ebSAlex Elder ceph_pagelist_append(pagelist, src->cls.indata, 4413d14c5d2SYehuda Sadeh src->cls.indata_len); 44295e072ebSAlex Elder 44343bfe5deSAlex Elder ceph_osd_data_pagelist_init(&req->r_data_out, pagelist); 44495e072ebSAlex Elder out_data_len = pagelist->length; 4453d14c5d2SYehuda Sadeh break; 4463d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 4473d14c5d2SYehuda Sadeh break; 448a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 449a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 450a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 451a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 452a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 453a40c4f10SYehuda Sadeh break; 4543d14c5d2SYehuda Sadeh default: 4554c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 4568f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 4574c46459cSAlex Elder WARN_ON(1); 458a8dd0a37SAlex Elder 459a8dd0a37SAlex Elder return 0; 4603d14c5d2SYehuda Sadeh } 461a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 4623d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 463175face2SAlex Elder 464175face2SAlex Elder return out_data_len; 4653d14c5d2SYehuda Sadeh } 4663d14c5d2SYehuda Sadeh 4673d14c5d2SYehuda Sadeh /* 4683d14c5d2SYehuda Sadeh * build new request AND message 4693d14c5d2SYehuda Sadeh * 4703d14c5d2SYehuda Sadeh */ 4713d14c5d2SYehuda Sadeh void ceph_osdc_build_request(struct ceph_osd_request *req, 472175face2SAlex Elder u64 off, unsigned int num_ops, 4733d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_ops, 4744d6b250bSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 475af77f26cSAlex Elder struct timespec *mtime) 4763d14c5d2SYehuda Sadeh { 4773d14c5d2SYehuda Sadeh struct ceph_msg *msg = req->r_request; 4783d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_op; 4793d14c5d2SYehuda Sadeh void *p; 4801b83bef2SSage Weil size_t msg_size; 4813d14c5d2SYehuda Sadeh int flags = req->r_flags; 482f44246e3SAlex Elder u64 data_len; 4833d14c5d2SYehuda Sadeh int i; 4843d14c5d2SYehuda Sadeh 4851b83bef2SSage Weil req->r_num_ops = num_ops; 4861b83bef2SSage Weil req->r_snapid = snap_id; 4873d14c5d2SYehuda Sadeh req->r_snapc = ceph_get_snap_context(snapc); 4883d14c5d2SYehuda Sadeh 4891b83bef2SSage Weil /* encode request */ 4901b83bef2SSage Weil msg->hdr.version = cpu_to_le16(4); 4913d14c5d2SYehuda Sadeh 4921b83bef2SSage Weil p = msg->front.iov_base; 4931b83bef2SSage Weil ceph_encode_32(&p, 1); /* client_inc is always 1 */ 4941b83bef2SSage Weil req->r_request_osdmap_epoch = p; 4951b83bef2SSage Weil p += 4; 4961b83bef2SSage Weil req->r_request_flags = p; 4971b83bef2SSage Weil p += 4; 4981b83bef2SSage Weil if (req->r_flags & CEPH_OSD_FLAG_WRITE) 4991b83bef2SSage Weil ceph_encode_timespec(p, mtime); 5001b83bef2SSage Weil p += sizeof(struct ceph_timespec); 5011b83bef2SSage Weil req->r_request_reassert_version = p; 5021b83bef2SSage Weil p += sizeof(struct ceph_eversion); /* will get filled in */ 5031b83bef2SSage Weil 5041b83bef2SSage Weil /* oloc */ 5051b83bef2SSage Weil ceph_encode_8(&p, 4); 5061b83bef2SSage Weil ceph_encode_8(&p, 4); 5071b83bef2SSage Weil ceph_encode_32(&p, 8 + 4 + 4); 5081b83bef2SSage Weil req->r_request_pool = p; 5091b83bef2SSage Weil p += 8; 5101b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 5111b83bef2SSage Weil ceph_encode_32(&p, 0); /* key len */ 5121b83bef2SSage Weil 5131b83bef2SSage Weil ceph_encode_8(&p, 1); 5141b83bef2SSage Weil req->r_request_pgid = p; 5151b83bef2SSage Weil p += 8 + 4; 5161b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 5171b83bef2SSage Weil 5181b83bef2SSage Weil /* oid */ 5191b83bef2SSage Weil ceph_encode_32(&p, req->r_oid_len); 520af77f26cSAlex Elder memcpy(p, req->r_oid, req->r_oid_len); 5211b83bef2SSage Weil dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); 522af77f26cSAlex Elder p += req->r_oid_len; 5233d14c5d2SYehuda Sadeh 524175face2SAlex Elder /* ops--can imply data */ 5251b83bef2SSage Weil ceph_encode_16(&p, num_ops); 5263d14c5d2SYehuda Sadeh src_op = src_ops; 5271b83bef2SSage Weil req->r_request_ops = p; 528175face2SAlex Elder data_len = 0; 5291b83bef2SSage Weil for (i = 0; i < num_ops; i++, src_op++) { 530175face2SAlex Elder data_len += osd_req_encode_op(req, p, src_op); 5311b83bef2SSage Weil p += sizeof(struct ceph_osd_op); 5321b83bef2SSage Weil } 5333d14c5d2SYehuda Sadeh 5341b83bef2SSage Weil /* snaps */ 5351b83bef2SSage Weil ceph_encode_64(&p, req->r_snapid); 5361b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 5371b83bef2SSage Weil ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 5381b83bef2SSage Weil if (req->r_snapc) { 5393d14c5d2SYehuda Sadeh for (i = 0; i < snapc->num_snaps; i++) { 5401b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc->snaps[i]); 5413d14c5d2SYehuda Sadeh } 5423d14c5d2SYehuda Sadeh } 5433d14c5d2SYehuda Sadeh 5441b83bef2SSage Weil req->r_request_attempts = p; 5451b83bef2SSage Weil p += 4; 5461b83bef2SSage Weil 547175face2SAlex Elder /* data */ 5480baa1bd9SAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 5490baa1bd9SAlex Elder u16 data_off; 5500baa1bd9SAlex Elder 5510baa1bd9SAlex Elder /* 5520baa1bd9SAlex Elder * The header "data_off" is a hint to the receiver 5530baa1bd9SAlex Elder * allowing it to align received data into its 5540baa1bd9SAlex Elder * buffers such that there's no need to re-copy 5550baa1bd9SAlex Elder * it before writing it to disk (direct I/O). 5560baa1bd9SAlex Elder */ 5570baa1bd9SAlex Elder data_off = (u16) (off & 0xffff); 5580baa1bd9SAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 5590baa1bd9SAlex Elder } 560f44246e3SAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 561c5c6b19dSSage Weil 5623d14c5d2SYehuda Sadeh BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 5633d14c5d2SYehuda Sadeh msg_size = p - msg->front.iov_base; 5643d14c5d2SYehuda Sadeh msg->front.iov_len = msg_size; 5653d14c5d2SYehuda Sadeh msg->hdr.front_len = cpu_to_le32(msg_size); 5661b83bef2SSage Weil 567acead002SAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 5683d14c5d2SYehuda Sadeh } 5693d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_build_request); 5703d14c5d2SYehuda Sadeh 5713d14c5d2SYehuda Sadeh /* 5723d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 5733d14c5d2SYehuda Sadeh * extent as needed. 5743d14c5d2SYehuda Sadeh * 5753d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 5763d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 5773d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 5783d14c5d2SYehuda Sadeh * 5793d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 5803d14c5d2SYehuda Sadeh * data quickly. 5813d14c5d2SYehuda Sadeh */ 5823d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 5833d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 5843d14c5d2SYehuda Sadeh struct ceph_vino vino, 585acead002SAlex Elder u64 off, u64 *plen, int num_ops, 586acead002SAlex Elder struct ceph_osd_req_op *ops, 5873d14c5d2SYehuda Sadeh int opcode, int flags, 5883d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5893d14c5d2SYehuda Sadeh u32 truncate_seq, 5903d14c5d2SYehuda Sadeh u64 truncate_size, 591153e5167SAlex Elder bool use_mempool) 5923d14c5d2SYehuda Sadeh { 5933d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 59475d1c941SAlex Elder u64 objnum = 0; 59575d1c941SAlex Elder u64 objoff = 0; 59675d1c941SAlex Elder u64 objlen = 0; 597d18d1e28SAlex Elder u32 object_size; 598d18d1e28SAlex Elder u64 object_base; 5996816282dSSage Weil int r; 6003d14c5d2SYehuda Sadeh 601d18d1e28SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE); 6023d14c5d2SYehuda Sadeh 603acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 604ae7ca4a3SAlex Elder GFP_NOFS); 6054ad12621SSage Weil if (!req) 6066816282dSSage Weil return ERR_PTR(-ENOMEM); 607d178a9e7SAlex Elder req->r_flags = flags; 6083d14c5d2SYehuda Sadeh 6093d14c5d2SYehuda Sadeh /* calculate max write size */ 610a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 6113ff5f385SAlex Elder if (r < 0) { 6123ff5f385SAlex Elder ceph_osdc_put_request(req); 6136816282dSSage Weil return ERR_PTR(r); 6143ff5f385SAlex Elder } 615a19dadfbSAlex Elder 616d18d1e28SAlex Elder object_size = le32_to_cpu(layout->fl_object_size); 617d18d1e28SAlex Elder object_base = off - objoff; 618d18d1e28SAlex Elder if (truncate_size <= object_base) { 619d18d1e28SAlex Elder truncate_size = 0; 620d18d1e28SAlex Elder } else { 621d18d1e28SAlex Elder truncate_size -= object_base; 622d18d1e28SAlex Elder if (truncate_size > object_size) 623d18d1e28SAlex Elder truncate_size = object_size; 624d18d1e28SAlex Elder } 625d18d1e28SAlex Elder 626b0270324SAlex Elder osd_req_op_extent_init(&ops[0], opcode, objoff, objlen, 627b0270324SAlex Elder truncate_size, truncate_seq); 628acead002SAlex Elder /* 629acead002SAlex Elder * A second op in the ops array means the caller wants to 630acead002SAlex Elder * also issue a include a 'startsync' command so that the 631acead002SAlex Elder * osd will flush data quickly. 632acead002SAlex Elder */ 633acead002SAlex Elder if (num_ops > 1) 634b0270324SAlex Elder osd_req_op_init(&ops[1], CEPH_OSD_OP_STARTSYNC); 635d18d1e28SAlex Elder 6363d14c5d2SYehuda Sadeh req->r_file_layout = *layout; /* keep a copy */ 6373d14c5d2SYehuda Sadeh 63875d1c941SAlex Elder snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", 63975d1c941SAlex Elder vino.ino, objnum); 640dbe0fc41SAlex Elder req->r_oid_len = strlen(req->r_oid); 641dbe0fc41SAlex Elder 6423d14c5d2SYehuda Sadeh return req; 6433d14c5d2SYehuda Sadeh } 6443d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 6453d14c5d2SYehuda Sadeh 6463d14c5d2SYehuda Sadeh /* 6473d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 6483d14c5d2SYehuda Sadeh */ 6493d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 6503d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 6513d14c5d2SYehuda Sadeh { 6523d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 6533d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 6543d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 6553d14c5d2SYehuda Sadeh 6563d14c5d2SYehuda Sadeh while (*p) { 6573d14c5d2SYehuda Sadeh parent = *p; 6583d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 6593d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 6603d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 6613d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 6623d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 6633d14c5d2SYehuda Sadeh else 6643d14c5d2SYehuda Sadeh BUG(); 6653d14c5d2SYehuda Sadeh } 6663d14c5d2SYehuda Sadeh 6673d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 6683d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 6693d14c5d2SYehuda Sadeh } 6703d14c5d2SYehuda Sadeh 6713d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 6723d14c5d2SYehuda Sadeh u64 tid) 6733d14c5d2SYehuda Sadeh { 6743d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 6753d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 6763d14c5d2SYehuda Sadeh 6773d14c5d2SYehuda Sadeh while (n) { 6783d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 6793d14c5d2SYehuda Sadeh if (tid < req->r_tid) 6803d14c5d2SYehuda Sadeh n = n->rb_left; 6813d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 6823d14c5d2SYehuda Sadeh n = n->rb_right; 6833d14c5d2SYehuda Sadeh else 6843d14c5d2SYehuda Sadeh return req; 6853d14c5d2SYehuda Sadeh } 6863d14c5d2SYehuda Sadeh return NULL; 6873d14c5d2SYehuda Sadeh } 6883d14c5d2SYehuda Sadeh 6893d14c5d2SYehuda Sadeh static struct ceph_osd_request * 6903d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 6913d14c5d2SYehuda Sadeh u64 tid) 6923d14c5d2SYehuda Sadeh { 6933d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 6943d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 6953d14c5d2SYehuda Sadeh 6963d14c5d2SYehuda Sadeh while (n) { 6973d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 6983d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 6993d14c5d2SYehuda Sadeh if (!n->rb_left) 7003d14c5d2SYehuda Sadeh return req; 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 } 7083d14c5d2SYehuda Sadeh return NULL; 7093d14c5d2SYehuda Sadeh } 7103d14c5d2SYehuda Sadeh 7116f6c7006SSage Weil /* 7126f6c7006SSage Weil * Resubmit requests pending on the given osd. 7136f6c7006SSage Weil */ 7146f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 7156f6c7006SSage Weil struct ceph_osd *osd) 7166f6c7006SSage Weil { 717a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 718e02493c0SAlex Elder LIST_HEAD(resend); 7196f6c7006SSage Weil int err; 7206f6c7006SSage Weil 7216f6c7006SSage Weil dout("__kick_osd_requests osd%d\n", osd->o_osd); 7226f6c7006SSage Weil err = __reset_osd(osdc, osd); 723685a7555SAlex Elder if (err) 7246f6c7006SSage Weil return; 725e02493c0SAlex Elder /* 726e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 727e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 728e02493c0SAlex Elder * sent in tid order, and that is also the order they're 729e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 730e02493c0SAlex Elder * flight will be found first, followed by all requests that 731e02493c0SAlex Elder * have not yet been sent. And to resend requests while 732e02493c0SAlex Elder * preserving this order we will want to put any sent 733e02493c0SAlex Elder * requests back on the front of the osd client's unsent 734e02493c0SAlex Elder * list. 735e02493c0SAlex Elder * 736e02493c0SAlex Elder * So we build a separate ordered list of already-sent 737e02493c0SAlex Elder * requests for the affected osd and splice it onto the 738e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 739e02493c0SAlex Elder * request that has not yet been sent we're done. Those 740e02493c0SAlex Elder * requests are already sitting right where they belong. 741e02493c0SAlex Elder */ 7426f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 743e02493c0SAlex Elder if (!req->r_sent) 744e02493c0SAlex Elder break; 745e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 746e02493c0SAlex Elder dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, 7476f6c7006SSage Weil osd->o_osd); 748a40c4f10SYehuda Sadeh if (!req->r_linger) 7496f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 7506f6c7006SSage Weil } 751e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 752a40c4f10SYehuda Sadeh 753e02493c0SAlex Elder /* 754e02493c0SAlex Elder * Linger requests are re-registered before sending, which 755e02493c0SAlex Elder * sets up a new tid for each. We add them to the unsent 756e02493c0SAlex Elder * list at the end to keep things in tid order. 757e02493c0SAlex Elder */ 758a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 759a40c4f10SYehuda Sadeh r_linger_osd) { 76077f38e0eSSage Weil /* 76177f38e0eSSage Weil * reregister request prior to unregistering linger so 76277f38e0eSSage Weil * that r_osd is preserved. 76377f38e0eSSage Weil */ 76477f38e0eSSage Weil BUG_ON(!list_empty(&req->r_req_lru_item)); 765a40c4f10SYehuda Sadeh __register_request(osdc, req); 766e02493c0SAlex Elder list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); 767ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 76877f38e0eSSage Weil __unregister_linger_request(osdc, req); 769a40c4f10SYehuda Sadeh dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, 770a40c4f10SYehuda Sadeh osd->o_osd); 771a40c4f10SYehuda Sadeh } 7726f6c7006SSage Weil } 7736f6c7006SSage Weil 7743d14c5d2SYehuda Sadeh /* 7753d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 7763d14c5d2SYehuda Sadeh */ 7773d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 7783d14c5d2SYehuda Sadeh { 7793d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 7803d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 7813d14c5d2SYehuda Sadeh 7823d14c5d2SYehuda Sadeh if (!osd) 7833d14c5d2SYehuda Sadeh return; 7843d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 7853d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 7863d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 78783aff95eSSage Weil mutex_lock(&osdc->request_mutex); 78883aff95eSSage Weil __kick_osd_requests(osdc, osd); 789f9d25199SAlex Elder __send_queued(osdc); 79083aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 7913d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 7923d14c5d2SYehuda Sadeh } 7933d14c5d2SYehuda Sadeh 7943d14c5d2SYehuda Sadeh /* 7953d14c5d2SYehuda Sadeh * Track open sessions with osds. 7963d14c5d2SYehuda Sadeh */ 797e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 7983d14c5d2SYehuda Sadeh { 7993d14c5d2SYehuda Sadeh struct ceph_osd *osd; 8003d14c5d2SYehuda Sadeh 8013d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 8023d14c5d2SYehuda Sadeh if (!osd) 8033d14c5d2SYehuda Sadeh return NULL; 8043d14c5d2SYehuda Sadeh 8053d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 8063d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 807e10006f8SAlex Elder osd->o_osd = onum; 808f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 8093d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 810a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 8113d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 8123d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 8133d14c5d2SYehuda Sadeh 814b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 8153d14c5d2SYehuda Sadeh 8163d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 8173d14c5d2SYehuda Sadeh return osd; 8183d14c5d2SYehuda Sadeh } 8193d14c5d2SYehuda Sadeh 8203d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 8213d14c5d2SYehuda Sadeh { 8223d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 8233d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 8243d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 8253d14c5d2SYehuda Sadeh return osd; 8263d14c5d2SYehuda Sadeh } else { 8273d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 8283d14c5d2SYehuda Sadeh return NULL; 8293d14c5d2SYehuda Sadeh } 8303d14c5d2SYehuda Sadeh } 8313d14c5d2SYehuda Sadeh 8323d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 8333d14c5d2SYehuda Sadeh { 8343d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 8353d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 836a255651dSAlex Elder if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { 8373d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 8383d14c5d2SYehuda Sadeh 83927859f97SSage Weil ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); 8403d14c5d2SYehuda Sadeh kfree(osd); 8413d14c5d2SYehuda Sadeh } 8423d14c5d2SYehuda Sadeh } 8433d14c5d2SYehuda Sadeh 8443d14c5d2SYehuda Sadeh /* 8453d14c5d2SYehuda Sadeh * remove an osd from our map 8463d14c5d2SYehuda Sadeh */ 8473d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 8483d14c5d2SYehuda Sadeh { 8493d14c5d2SYehuda Sadeh dout("__remove_osd %p\n", osd); 8503d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_requests)); 8513d14c5d2SYehuda Sadeh rb_erase(&osd->o_node, &osdc->osds); 8523d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 8533d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 8543d14c5d2SYehuda Sadeh put_osd(osd); 8553d14c5d2SYehuda Sadeh } 8563d14c5d2SYehuda Sadeh 857aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 858aca420bcSSage Weil { 859048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 860aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 861aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 862aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 863aca420bcSSage Weil struct ceph_osd, o_node); 864aca420bcSSage Weil __remove_osd(osdc, osd); 865aca420bcSSage Weil } 866aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 867aca420bcSSage Weil } 868aca420bcSSage Weil 8693d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 8703d14c5d2SYehuda Sadeh struct ceph_osd *osd) 8713d14c5d2SYehuda Sadeh { 8723d14c5d2SYehuda Sadeh dout("__move_osd_to_lru %p\n", osd); 8733d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 8743d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 8753d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 8763d14c5d2SYehuda Sadeh } 8773d14c5d2SYehuda Sadeh 8783d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 8793d14c5d2SYehuda Sadeh { 8803d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 8813d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 8823d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 8833d14c5d2SYehuda Sadeh } 8843d14c5d2SYehuda Sadeh 885aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 8863d14c5d2SYehuda Sadeh { 8873d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 8883d14c5d2SYehuda Sadeh 8893d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 8903d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 8913d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 892aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 8933d14c5d2SYehuda Sadeh break; 8943d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 8953d14c5d2SYehuda Sadeh } 8963d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 8973d14c5d2SYehuda Sadeh } 8983d14c5d2SYehuda Sadeh 8993d14c5d2SYehuda Sadeh /* 9003d14c5d2SYehuda Sadeh * reset osd connect 9013d14c5d2SYehuda Sadeh */ 9023d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 9033d14c5d2SYehuda Sadeh { 904c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 9053d14c5d2SYehuda Sadeh 9063d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 907a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 908a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 9093d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 910c3acb181SAlex Elder 911c3acb181SAlex Elder return -ENODEV; 912c3acb181SAlex Elder } 913c3acb181SAlex Elder 914c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 915c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 9163d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 917c3acb181SAlex Elder struct ceph_osd_request *req; 918c3acb181SAlex Elder 9193d14c5d2SYehuda Sadeh dout(" osd addr hasn't changed and connection never opened," 9203d14c5d2SYehuda Sadeh " letting msgr retry"); 9213d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 9223d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 9233d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 924c3acb181SAlex Elder 925c3acb181SAlex Elder return -EAGAIN; 9263d14c5d2SYehuda Sadeh } 927c3acb181SAlex Elder 928c3acb181SAlex Elder ceph_con_close(&osd->o_con); 929c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 930c3acb181SAlex Elder osd->o_incarnation++; 931c3acb181SAlex Elder 932c3acb181SAlex Elder return 0; 9333d14c5d2SYehuda Sadeh } 9343d14c5d2SYehuda Sadeh 9353d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 9363d14c5d2SYehuda Sadeh { 9373d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 9383d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 9393d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 9403d14c5d2SYehuda Sadeh 941aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 9423d14c5d2SYehuda Sadeh while (*p) { 9433d14c5d2SYehuda Sadeh parent = *p; 9443d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 9453d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 9463d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 9473d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 9483d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 9493d14c5d2SYehuda Sadeh else 9503d14c5d2SYehuda Sadeh BUG(); 9513d14c5d2SYehuda Sadeh } 9523d14c5d2SYehuda Sadeh 9533d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 9543d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 9553d14c5d2SYehuda Sadeh } 9563d14c5d2SYehuda Sadeh 9573d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 9583d14c5d2SYehuda Sadeh { 9593d14c5d2SYehuda Sadeh struct ceph_osd *osd; 9603d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 9613d14c5d2SYehuda Sadeh 9623d14c5d2SYehuda Sadeh while (n) { 9633d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 9643d14c5d2SYehuda Sadeh if (o < osd->o_osd) 9653d14c5d2SYehuda Sadeh n = n->rb_left; 9663d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 9673d14c5d2SYehuda Sadeh n = n->rb_right; 9683d14c5d2SYehuda Sadeh else 9693d14c5d2SYehuda Sadeh return osd; 9703d14c5d2SYehuda Sadeh } 9713d14c5d2SYehuda Sadeh return NULL; 9723d14c5d2SYehuda Sadeh } 9733d14c5d2SYehuda Sadeh 9743d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 9753d14c5d2SYehuda Sadeh { 9763d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 9773d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 9783d14c5d2SYehuda Sadeh } 9793d14c5d2SYehuda Sadeh 9803d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 9813d14c5d2SYehuda Sadeh { 9823d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 9833d14c5d2SYehuda Sadeh } 9843d14c5d2SYehuda Sadeh 9853d14c5d2SYehuda Sadeh /* 9863d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 9873d14c5d2SYehuda Sadeh * the timeout event. 9883d14c5d2SYehuda Sadeh */ 989a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 9903d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 9913d14c5d2SYehuda Sadeh { 9923d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 9933d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 99477f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 9953d14c5d2SYehuda Sadeh __insert_request(osdc, req); 9963d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 9973d14c5d2SYehuda Sadeh osdc->num_requests++; 9983d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 9993d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 10003d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 10013d14c5d2SYehuda Sadeh } 1002a40c4f10SYehuda Sadeh } 1003a40c4f10SYehuda Sadeh 10043d14c5d2SYehuda Sadeh /* 10053d14c5d2SYehuda Sadeh * called under osdc->request_mutex 10063d14c5d2SYehuda Sadeh */ 10073d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 10083d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 10093d14c5d2SYehuda Sadeh { 101035f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 101135f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 101235f9f8a0SSage Weil req, req->r_tid); 101335f9f8a0SSage Weil return; 101435f9f8a0SSage Weil } 101535f9f8a0SSage Weil 10163d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 10173d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 10183d14c5d2SYehuda Sadeh osdc->num_requests--; 10193d14c5d2SYehuda Sadeh 10203d14c5d2SYehuda Sadeh if (req->r_osd) { 10213d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 10226740a845SAlex Elder ceph_msg_revoke(req->r_request); 10233d14c5d2SYehuda Sadeh 10243d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1025a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 1026a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 1027a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 10283d14c5d2SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 1029a40c4f10SYehuda Sadeh } 1030fbdb9190SSage Weil if (list_empty(&req->r_linger_item)) 10313d14c5d2SYehuda Sadeh req->r_osd = NULL; 10323d14c5d2SYehuda Sadeh } 10333d14c5d2SYehuda Sadeh 10347d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 10353d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 10363d14c5d2SYehuda Sadeh 10373d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 10383d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 10393d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 10403d14c5d2SYehuda Sadeh } 10413d14c5d2SYehuda Sadeh } 10423d14c5d2SYehuda Sadeh 10433d14c5d2SYehuda Sadeh /* 10443d14c5d2SYehuda Sadeh * Cancel a previously queued request message 10453d14c5d2SYehuda Sadeh */ 10463d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 10473d14c5d2SYehuda Sadeh { 10483d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 10496740a845SAlex Elder ceph_msg_revoke(req->r_request); 10503d14c5d2SYehuda Sadeh req->r_sent = 0; 10513d14c5d2SYehuda Sadeh } 10523d14c5d2SYehuda Sadeh } 10533d14c5d2SYehuda Sadeh 1054a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1055a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1056a40c4f10SYehuda Sadeh { 1057a40c4f10SYehuda Sadeh dout("__register_linger_request %p\n", req); 1058a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 10596194ea89SSage Weil if (req->r_osd) 10606194ea89SSage Weil list_add_tail(&req->r_linger_osd, 10616194ea89SSage Weil &req->r_osd->o_linger_requests); 1062a40c4f10SYehuda Sadeh } 1063a40c4f10SYehuda Sadeh 1064a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1065a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1066a40c4f10SYehuda Sadeh { 1067a40c4f10SYehuda Sadeh dout("__unregister_linger_request %p\n", req); 1068a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 106961c74035SAlex Elder if (req->r_osd) { 1070a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_osd); 1071a40c4f10SYehuda Sadeh 1072a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 1073a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 1074a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 1075a40c4f10SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 1076a40c4f10SYehuda Sadeh } 1077fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1078a40c4f10SYehuda Sadeh req->r_osd = NULL; 1079a40c4f10SYehuda Sadeh } 1080a40c4f10SYehuda Sadeh } 1081a40c4f10SYehuda Sadeh 1082a40c4f10SYehuda Sadeh void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, 1083a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1084a40c4f10SYehuda Sadeh { 1085a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1086a40c4f10SYehuda Sadeh if (req->r_linger) { 1087a40c4f10SYehuda Sadeh __unregister_linger_request(osdc, req); 1088a40c4f10SYehuda Sadeh ceph_osdc_put_request(req); 1089a40c4f10SYehuda Sadeh } 1090a40c4f10SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1091a40c4f10SYehuda Sadeh } 1092a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); 1093a40c4f10SYehuda Sadeh 1094a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1095a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1096a40c4f10SYehuda Sadeh { 1097a40c4f10SYehuda Sadeh if (!req->r_linger) { 1098a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1099a40c4f10SYehuda Sadeh req->r_linger = 1; 1100a40c4f10SYehuda Sadeh /* 1101a40c4f10SYehuda Sadeh * caller is now responsible for calling 1102a40c4f10SYehuda Sadeh * unregister_linger_request 1103a40c4f10SYehuda Sadeh */ 1104a40c4f10SYehuda Sadeh ceph_osdc_get_request(req); 1105a40c4f10SYehuda Sadeh } 1106a40c4f10SYehuda Sadeh } 1107a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1108a40c4f10SYehuda Sadeh 11093d14c5d2SYehuda Sadeh /* 11103d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 11113d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 111225985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 11136f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 11143d14c5d2SYehuda Sadeh * 11153d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 11163d14c5d2SYehuda Sadeh * 11173d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 11183d14c5d2SYehuda Sadeh */ 11196f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 112038d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 11213d14c5d2SYehuda Sadeh { 11225b191d99SSage Weil struct ceph_pg pgid; 11233d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 11243d14c5d2SYehuda Sadeh int o = -1, num = 0; 11253d14c5d2SYehuda Sadeh int err; 11263d14c5d2SYehuda Sadeh 11276f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 112841766f87SAlex Elder err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, 112941766f87SAlex Elder ceph_file_layout_pg_pool(req->r_file_layout)); 11306f6c7006SSage Weil if (err) { 11316f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 11323d14c5d2SYehuda Sadeh return err; 11336f6c7006SSage Weil } 11343d14c5d2SYehuda Sadeh req->r_pgid = pgid; 11353d14c5d2SYehuda Sadeh 11363d14c5d2SYehuda Sadeh err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); 11373d14c5d2SYehuda Sadeh if (err > 0) { 11383d14c5d2SYehuda Sadeh o = acting[0]; 11393d14c5d2SYehuda Sadeh num = err; 11403d14c5d2SYehuda Sadeh } 11413d14c5d2SYehuda Sadeh 114238d6453cSSage Weil if ((!force_resend && 114338d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 11443d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 11453d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 11463d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 11473d14c5d2SYehuda Sadeh (req->r_osd == NULL && o == -1)) 11483d14c5d2SYehuda Sadeh return 0; /* no change */ 11493d14c5d2SYehuda Sadeh 11505b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 11515b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 11523d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 11533d14c5d2SYehuda Sadeh 11543d14c5d2SYehuda Sadeh /* record full pg acting set */ 11553d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 11563d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 11573d14c5d2SYehuda Sadeh 11583d14c5d2SYehuda Sadeh if (req->r_osd) { 11593d14c5d2SYehuda Sadeh __cancel_request(req); 11603d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 11613d14c5d2SYehuda Sadeh req->r_osd = NULL; 11623d14c5d2SYehuda Sadeh } 11633d14c5d2SYehuda Sadeh 11643d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 11653d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 11663d14c5d2SYehuda Sadeh err = -ENOMEM; 1167e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 11686f6c7006SSage Weil if (!req->r_osd) { 11696f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 11703d14c5d2SYehuda Sadeh goto out; 11716f6c7006SSage Weil } 11723d14c5d2SYehuda Sadeh 11736f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 11743d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 11753d14c5d2SYehuda Sadeh 1176b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1177b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1178b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 11793d14c5d2SYehuda Sadeh } 11803d14c5d2SYehuda Sadeh 11813d14c5d2SYehuda Sadeh if (req->r_osd) { 11823d14c5d2SYehuda Sadeh __remove_osd_from_lru(req->r_osd); 1183ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1184ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 11856f6c7006SSage Weil } else { 1186ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 11873d14c5d2SYehuda Sadeh } 11883d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 11893d14c5d2SYehuda Sadeh 11903d14c5d2SYehuda Sadeh out: 11913d14c5d2SYehuda Sadeh return err; 11923d14c5d2SYehuda Sadeh } 11933d14c5d2SYehuda Sadeh 11943d14c5d2SYehuda Sadeh /* 11953d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 11963d14c5d2SYehuda Sadeh */ 119756e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 11983d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 11993d14c5d2SYehuda Sadeh { 12001b83bef2SSage Weil void *p; 12013d14c5d2SYehuda Sadeh 12021b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 12031b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 12041b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 12053d14c5d2SYehuda Sadeh 12061b83bef2SSage Weil /* fill in message content that changes each time we send it */ 12071b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 12081b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 12091b83bef2SSage Weil put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); 12101b83bef2SSage Weil p = req->r_request_pgid; 12111b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 12121b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 12131b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 12141b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 12151b83bef2SSage Weil sizeof(req->r_reassert_version)); 12162169aea6SSage Weil 12173d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 12183d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 12193d14c5d2SYehuda Sadeh 12203d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 12213d14c5d2SYehuda Sadeh ceph_con_send(&req->r_osd->o_con, req->r_request); 12223d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 12233d14c5d2SYehuda Sadeh } 12243d14c5d2SYehuda Sadeh 12253d14c5d2SYehuda Sadeh /* 12266f6c7006SSage Weil * Send any requests in the queue (req_unsent). 12276f6c7006SSage Weil */ 1228f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 12296f6c7006SSage Weil { 12306f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 12316f6c7006SSage Weil 1232f9d25199SAlex Elder dout("__send_queued\n"); 1233f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 12346f6c7006SSage Weil __send_request(osdc, req); 12356f6c7006SSage Weil } 12366f6c7006SSage Weil 12376f6c7006SSage Weil /* 12383d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 12393d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 12403d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 12413d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 12423d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 12433d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 12443d14c5d2SYehuda Sadeh * there are no open requests). 12453d14c5d2SYehuda Sadeh */ 12463d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 12473d14c5d2SYehuda Sadeh { 12483d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 12493d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 125083aff95eSSage Weil struct ceph_osd_request *req; 12513d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12523d14c5d2SYehuda Sadeh unsigned long keepalive = 12533d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 12543d14c5d2SYehuda Sadeh struct list_head slow_osds; 12553d14c5d2SYehuda Sadeh dout("timeout\n"); 12563d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 12573d14c5d2SYehuda Sadeh 12583d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 12593d14c5d2SYehuda Sadeh 12603d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 12613d14c5d2SYehuda Sadeh 12623d14c5d2SYehuda Sadeh /* 12633d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 12643d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 12653d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 12663d14c5d2SYehuda Sadeh */ 12673d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 12683d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 12693d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 12703d14c5d2SYehuda Sadeh break; 12713d14c5d2SYehuda Sadeh 12723d14c5d2SYehuda Sadeh osd = req->r_osd; 12733d14c5d2SYehuda Sadeh BUG_ON(!osd); 12743d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 12753d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 12763d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 12773d14c5d2SYehuda Sadeh } 12783d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 12793d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 12803d14c5d2SYehuda Sadeh o_keepalive_item); 12813d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 12823d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 12833d14c5d2SYehuda Sadeh } 12843d14c5d2SYehuda Sadeh 12853d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1286f9d25199SAlex Elder __send_queued(osdc); 12873d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 12883d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 12893d14c5d2SYehuda Sadeh } 12903d14c5d2SYehuda Sadeh 12913d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 12923d14c5d2SYehuda Sadeh { 12933d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 12943d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 12953d14c5d2SYehuda Sadeh osds_timeout_work.work); 12963d14c5d2SYehuda Sadeh unsigned long delay = 12973d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 12983d14c5d2SYehuda Sadeh 12993d14c5d2SYehuda Sadeh dout("osds timeout\n"); 13003d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1301aca420bcSSage Weil remove_old_osds(osdc); 13023d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 13033d14c5d2SYehuda Sadeh 13043d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 13053d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 13063d14c5d2SYehuda Sadeh } 13073d14c5d2SYehuda Sadeh 130825845472SSage Weil static void complete_request(struct ceph_osd_request *req) 130925845472SSage Weil { 131025845472SSage Weil if (req->r_safe_callback) 131125845472SSage Weil req->r_safe_callback(req, NULL); 131225845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 131325845472SSage Weil } 131425845472SSage Weil 13153d14c5d2SYehuda Sadeh /* 13163d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 13173d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 13183d14c5d2SYehuda Sadeh */ 13193d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 13203d14c5d2SYehuda Sadeh struct ceph_connection *con) 13213d14c5d2SYehuda Sadeh { 13221b83bef2SSage Weil void *p, *end; 13233d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 13243d14c5d2SYehuda Sadeh u64 tid; 13251b83bef2SSage Weil int object_len; 13261b83bef2SSage Weil int numops, payload_len, flags; 13273d14c5d2SYehuda Sadeh s32 result; 13281b83bef2SSage Weil s32 retry_attempt; 13291b83bef2SSage Weil struct ceph_pg pg; 13301b83bef2SSage Weil int err; 13311b83bef2SSage Weil u32 reassert_epoch; 13321b83bef2SSage Weil u64 reassert_version; 13331b83bef2SSage Weil u32 osdmap_epoch; 13340d5af164SAlex Elder int already_completed; 13359fc6e064SAlex Elder u32 bytes; 13361b83bef2SSage Weil int i; 13373d14c5d2SYehuda Sadeh 13383d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 13391b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 13401b83bef2SSage Weil 13411b83bef2SSage Weil p = msg->front.iov_base; 13421b83bef2SSage Weil end = p + msg->front.iov_len; 13431b83bef2SSage Weil 13441b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 13451b83bef2SSage Weil object_len = ceph_decode_32(&p); 13461b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 13471b83bef2SSage Weil p += object_len; 13481b83bef2SSage Weil 1349ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 13501b83bef2SSage Weil if (err) 13513d14c5d2SYehuda Sadeh goto bad; 13521b83bef2SSage Weil 13531b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 13541b83bef2SSage Weil flags = ceph_decode_64(&p); 13551b83bef2SSage Weil result = ceph_decode_32(&p); 13561b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 13571b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 13581b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 13591b83bef2SSage Weil 13603d14c5d2SYehuda Sadeh /* lookup */ 13613d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 13623d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 13633d14c5d2SYehuda Sadeh if (req == NULL) { 13643d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 13658058fd45SAlex Elder goto bad_mutex; 13663d14c5d2SYehuda Sadeh } 13673d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 13681b83bef2SSage Weil 13691b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 13701b83bef2SSage Weil req, result); 13711b83bef2SSage Weil 13721b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 13731b83bef2SSage Weil numops = ceph_decode_32(&p); 13741b83bef2SSage Weil if (numops > CEPH_OSD_MAX_OP) 13751b83bef2SSage Weil goto bad_put; 13761b83bef2SSage Weil if (numops != req->r_num_ops) 13771b83bef2SSage Weil goto bad_put; 13781b83bef2SSage Weil payload_len = 0; 13791b83bef2SSage Weil ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); 13801b83bef2SSage Weil for (i = 0; i < numops; i++) { 13811b83bef2SSage Weil struct ceph_osd_op *op = p; 13821b83bef2SSage Weil int len; 13831b83bef2SSage Weil 13841b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 13851b83bef2SSage Weil req->r_reply_op_len[i] = len; 13861b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 13871b83bef2SSage Weil payload_len += len; 13881b83bef2SSage Weil p += sizeof(*op); 13891b83bef2SSage Weil } 13909fc6e064SAlex Elder bytes = le32_to_cpu(msg->hdr.data_len); 13919fc6e064SAlex Elder if (payload_len != bytes) { 13921b83bef2SSage Weil pr_warning("sum of op payload lens %d != data_len %d", 13939fc6e064SAlex Elder payload_len, bytes); 13941b83bef2SSage Weil goto bad_put; 13951b83bef2SSage Weil } 13961b83bef2SSage Weil 13971b83bef2SSage Weil ceph_decode_need(&p, end, 4 + numops * 4, bad); 13981b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 13991b83bef2SSage Weil for (i = 0; i < numops; i++) 14001b83bef2SSage Weil req->r_reply_op_result[i] = ceph_decode_32(&p); 14013d14c5d2SYehuda Sadeh 14023d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 14033d14c5d2SYehuda Sadeh 14041b83bef2SSage Weil req->r_result = result; 14053d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 14063d14c5d2SYehuda Sadeh bytes); 14073d14c5d2SYehuda Sadeh if (req->r_result == 0) 14083d14c5d2SYehuda Sadeh req->r_result = bytes; 14093d14c5d2SYehuda Sadeh 14103d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 14111b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 14121b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 14133d14c5d2SYehuda Sadeh 14143d14c5d2SYehuda Sadeh req->r_got_reply = 1; 14153d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 14163d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 14173d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14183d14c5d2SYehuda Sadeh goto done; 14193d14c5d2SYehuda Sadeh } 14203d14c5d2SYehuda Sadeh 14213d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 14223d14c5d2SYehuda Sadeh 1423a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1424a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1425a40c4f10SYehuda Sadeh 14263d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 14273d14c5d2SYehuda Sadeh if (result < 0 || 14283d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 14293d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 14303d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 14313d14c5d2SYehuda Sadeh 14320d5af164SAlex Elder already_completed = req->r_completed; 14330d5af164SAlex Elder req->r_completed = 1; 14343d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14350d5af164SAlex Elder if (already_completed) 14360d5af164SAlex Elder goto done; 14373d14c5d2SYehuda Sadeh 14383d14c5d2SYehuda Sadeh if (req->r_callback) 14393d14c5d2SYehuda Sadeh req->r_callback(req, msg); 14403d14c5d2SYehuda Sadeh else 14413d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 14423d14c5d2SYehuda Sadeh 144325845472SSage Weil if (flags & CEPH_OSD_FLAG_ONDISK) 144425845472SSage Weil complete_request(req); 14453d14c5d2SYehuda Sadeh 14463d14c5d2SYehuda Sadeh done: 1447a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 14483d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 14493d14c5d2SYehuda Sadeh return; 14503d14c5d2SYehuda Sadeh 14511b83bef2SSage Weil bad_put: 14521b83bef2SSage Weil ceph_osdc_put_request(req); 14538058fd45SAlex Elder bad_mutex: 14548058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 14553d14c5d2SYehuda Sadeh bad: 14561b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 14571b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 14583d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 14593d14c5d2SYehuda Sadeh } 14603d14c5d2SYehuda Sadeh 14616f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 14623d14c5d2SYehuda Sadeh { 14633d14c5d2SYehuda Sadeh struct rb_node *p, *n; 14643d14c5d2SYehuda Sadeh 14653d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 14666f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 14673d14c5d2SYehuda Sadeh 14683d14c5d2SYehuda Sadeh n = rb_next(p); 14693d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 14703d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 14713d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 14723d14c5d2SYehuda Sadeh osd->o_osd), 14733d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 14743d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 14753d14c5d2SYehuda Sadeh } 14763d14c5d2SYehuda Sadeh } 14773d14c5d2SYehuda Sadeh 14783d14c5d2SYehuda Sadeh /* 14796f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 14806f6c7006SSage Weil * no osd, request a new map. 14813d14c5d2SYehuda Sadeh * 1482e6d50f67SAlex Elder * Caller should hold map_sem for read. 14833d14c5d2SYehuda Sadeh */ 148438d6453cSSage Weil static void kick_requests(struct ceph_osd_client *osdc, int force_resend) 14853d14c5d2SYehuda Sadeh { 1486a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 14876f6c7006SSage Weil struct rb_node *p; 14886f6c7006SSage Weil int needmap = 0; 14896f6c7006SSage Weil int err; 14903d14c5d2SYehuda Sadeh 149138d6453cSSage Weil dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); 14923d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 14936194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 14946f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 14956194ea89SSage Weil p = rb_next(p); 1496ab60b16dSAlex Elder 1497ab60b16dSAlex Elder /* 1498ab60b16dSAlex Elder * For linger requests that have not yet been 1499ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1500ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1501ab60b16dSAlex Elder * the request before re-registering it as a linger 1502ab60b16dSAlex Elder * request to ensure the __map_request() below 1503ab60b16dSAlex Elder * will decide it needs to be sent. 1504ab60b16dSAlex Elder */ 1505ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1506ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1507ab60b16dSAlex Elder req, req->r_tid, 1508ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 1509ab60b16dSAlex Elder __unregister_request(osdc, req); 1510ab60b16dSAlex Elder __register_linger_request(osdc, req); 1511ab60b16dSAlex Elder continue; 1512ab60b16dSAlex Elder } 1513ab60b16dSAlex Elder 151438d6453cSSage Weil err = __map_request(osdc, req, force_resend); 15156f6c7006SSage Weil if (err < 0) 15166f6c7006SSage Weil continue; /* error */ 15176f6c7006SSage Weil if (req->r_osd == NULL) { 15186f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 15196f6c7006SSage Weil needmap++; /* request a newer map */ 15206f6c7006SSage Weil } else if (err > 0) { 15216194ea89SSage Weil if (!req->r_linger) { 15226194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 15236194ea89SSage Weil req->r_tid, 15246f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 15256f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 15266f6c7006SSage Weil } 15276f6c7006SSage Weil } 15286194ea89SSage Weil } 1529a40c4f10SYehuda Sadeh 1530a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 1531a40c4f10SYehuda Sadeh r_linger_item) { 1532a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 1533a40c4f10SYehuda Sadeh 153438d6453cSSage Weil err = __map_request(osdc, req, force_resend); 1535ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 1536a40c4f10SYehuda Sadeh if (err == 0) 1537a40c4f10SYehuda Sadeh continue; /* no change and no osd was specified */ 1538a40c4f10SYehuda Sadeh if (err < 0) 1539a40c4f10SYehuda Sadeh continue; /* hrm! */ 1540a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 1541a40c4f10SYehuda Sadeh dout("tid %llu maps to no valid osd\n", req->r_tid); 1542a40c4f10SYehuda Sadeh needmap++; /* request a newer map */ 1543a40c4f10SYehuda Sadeh continue; 1544a40c4f10SYehuda Sadeh } 1545a40c4f10SYehuda Sadeh 1546a40c4f10SYehuda Sadeh dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, 1547a40c4f10SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 1548a40c4f10SYehuda Sadeh __register_request(osdc, req); 1549c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 1550a40c4f10SYehuda Sadeh } 15513d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 15523d14c5d2SYehuda Sadeh 15533d14c5d2SYehuda Sadeh if (needmap) { 15543d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 15553d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 15563d14c5d2SYehuda Sadeh } 1557e6d50f67SAlex Elder reset_changed_osds(osdc); 15583d14c5d2SYehuda Sadeh } 15596f6c7006SSage Weil 15606f6c7006SSage Weil 15613d14c5d2SYehuda Sadeh /* 15623d14c5d2SYehuda Sadeh * Process updated osd map. 15633d14c5d2SYehuda Sadeh * 15643d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 15653d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 15663d14c5d2SYehuda Sadeh * off to different OSDs as needed. 15673d14c5d2SYehuda Sadeh */ 15683d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 15693d14c5d2SYehuda Sadeh { 15703d14c5d2SYehuda Sadeh void *p, *end, *next; 15713d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 15723d14c5d2SYehuda Sadeh u32 epoch; 15733d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 15743d14c5d2SYehuda Sadeh int err; 15753d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 15763d14c5d2SYehuda Sadeh 15773d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 15783d14c5d2SYehuda Sadeh p = msg->front.iov_base; 15793d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 15803d14c5d2SYehuda Sadeh 15813d14c5d2SYehuda Sadeh /* verify fsid */ 15823d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 15833d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 15843d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 15853d14c5d2SYehuda Sadeh return; 15863d14c5d2SYehuda Sadeh 15873d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 15883d14c5d2SYehuda Sadeh 15893d14c5d2SYehuda Sadeh /* incremental maps */ 15903d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 15913d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 15923d14c5d2SYehuda Sadeh while (nr_maps > 0) { 15933d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 15943d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 15953d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 15963d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 15973d14c5d2SYehuda Sadeh next = p + maplen; 15983d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 15993d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 16003d14c5d2SYehuda Sadeh epoch, maplen); 16013d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 16023d14c5d2SYehuda Sadeh osdc->osdmap, 160315d9882cSAlex Elder &osdc->client->msgr); 16043d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 16053d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 16063d14c5d2SYehuda Sadeh goto bad; 16073d14c5d2SYehuda Sadeh } 16083d14c5d2SYehuda Sadeh BUG_ON(!newmap); 16093d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 16103d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 16113d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 16123d14c5d2SYehuda Sadeh } 161338d6453cSSage Weil kick_requests(osdc, 0); 16143d14c5d2SYehuda Sadeh } else { 16153d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 16163d14c5d2SYehuda Sadeh epoch, maplen); 16173d14c5d2SYehuda Sadeh } 16183d14c5d2SYehuda Sadeh p = next; 16193d14c5d2SYehuda Sadeh nr_maps--; 16203d14c5d2SYehuda Sadeh } 16213d14c5d2SYehuda Sadeh if (newmap) 16223d14c5d2SYehuda Sadeh goto done; 16233d14c5d2SYehuda Sadeh 16243d14c5d2SYehuda Sadeh /* full maps */ 16253d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 16263d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 16273d14c5d2SYehuda Sadeh while (nr_maps) { 16283d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 16293d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 16303d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 16313d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 16323d14c5d2SYehuda Sadeh if (nr_maps > 1) { 16333d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 16343d14c5d2SYehuda Sadeh epoch, maplen); 16353d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 16363d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 16373d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 16383d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 16393d14c5d2SYehuda Sadeh } else { 164038d6453cSSage Weil int skipped_map = 0; 164138d6453cSSage Weil 16423d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 16433d14c5d2SYehuda Sadeh newmap = osdmap_decode(&p, p+maplen); 16443d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 16453d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 16463d14c5d2SYehuda Sadeh goto bad; 16473d14c5d2SYehuda Sadeh } 16483d14c5d2SYehuda Sadeh BUG_ON(!newmap); 16493d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 16503d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 165138d6453cSSage Weil if (oldmap) { 165238d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 165338d6453cSSage Weil skipped_map = 1; 16543d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 165538d6453cSSage Weil } 165638d6453cSSage Weil kick_requests(osdc, skipped_map); 16573d14c5d2SYehuda Sadeh } 16583d14c5d2SYehuda Sadeh p += maplen; 16593d14c5d2SYehuda Sadeh nr_maps--; 16603d14c5d2SYehuda Sadeh } 16613d14c5d2SYehuda Sadeh 16623d14c5d2SYehuda Sadeh done: 16633d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 16643d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 1665cd634fb6SSage Weil 1666cd634fb6SSage Weil /* 1667cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 1668cd634fb6SSage Weil * we find out when we are no longer full and stop returning 1669cd634fb6SSage Weil * ENOSPC. 1670cd634fb6SSage Weil */ 1671cd634fb6SSage Weil if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) 1672cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 1673cd634fb6SSage Weil 1674f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 1675f9d25199SAlex Elder __send_queued(osdc); 1676f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 16773d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16783d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 16793d14c5d2SYehuda Sadeh return; 16803d14c5d2SYehuda Sadeh 16813d14c5d2SYehuda Sadeh bad: 16823d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 16833d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 16843d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 16853d14c5d2SYehuda Sadeh return; 16863d14c5d2SYehuda Sadeh } 16873d14c5d2SYehuda Sadeh 16883d14c5d2SYehuda Sadeh /* 1689a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 1690a40c4f10SYehuda Sadeh * 1691a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 1692a40c4f10SYehuda Sadeh */ 1693a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 1694a40c4f10SYehuda Sadeh { 1695a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 1696a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 1697a40c4f10SYehuda Sadeh 1698a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 1699a40c4f10SYehuda Sadeh kfree(event); 1700a40c4f10SYehuda Sadeh } 1701a40c4f10SYehuda Sadeh 1702a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 1703a40c4f10SYehuda Sadeh { 1704a40c4f10SYehuda Sadeh kref_get(&event->kref); 1705a40c4f10SYehuda Sadeh } 1706a40c4f10SYehuda Sadeh 1707a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 1708a40c4f10SYehuda Sadeh { 1709a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 1710a40c4f10SYehuda Sadeh } 1711a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 1712a40c4f10SYehuda Sadeh 1713a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 1714a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 1715a40c4f10SYehuda Sadeh { 1716a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1717a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1718a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1719a40c4f10SYehuda Sadeh 1720a40c4f10SYehuda Sadeh while (*p) { 1721a40c4f10SYehuda Sadeh parent = *p; 1722a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1723a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 1724a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1725a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 1726a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1727a40c4f10SYehuda Sadeh else 1728a40c4f10SYehuda Sadeh BUG(); 1729a40c4f10SYehuda Sadeh } 1730a40c4f10SYehuda Sadeh 1731a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 1732a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 1733a40c4f10SYehuda Sadeh } 1734a40c4f10SYehuda Sadeh 1735a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 1736a40c4f10SYehuda Sadeh u64 cookie) 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 (cookie < event->cookie) 1746a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1747a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 1748a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1749a40c4f10SYehuda Sadeh else 1750a40c4f10SYehuda Sadeh return event; 1751a40c4f10SYehuda Sadeh } 1752a40c4f10SYehuda Sadeh return NULL; 1753a40c4f10SYehuda Sadeh } 1754a40c4f10SYehuda Sadeh 1755a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 1756a40c4f10SYehuda Sadeh { 1757a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1758a40c4f10SYehuda Sadeh 1759a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 1760a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 1761a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 1762a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1763a40c4f10SYehuda Sadeh } else { 1764a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 1765a40c4f10SYehuda Sadeh } 1766a40c4f10SYehuda Sadeh } 1767a40c4f10SYehuda Sadeh 1768a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 1769a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 17703c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 1771a40c4f10SYehuda Sadeh { 1772a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1773a40c4f10SYehuda Sadeh 1774a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 1775a40c4f10SYehuda Sadeh if (!event) 1776a40c4f10SYehuda Sadeh return -ENOMEM; 1777a40c4f10SYehuda Sadeh 1778a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 1779a40c4f10SYehuda Sadeh event->cb = event_cb; 17803c663bbdSAlex Elder event->one_shot = 0; 1781a40c4f10SYehuda Sadeh event->data = data; 1782a40c4f10SYehuda Sadeh event->osdc = osdc; 1783a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 17843ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 1785a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 1786a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 1787a40c4f10SYehuda Sadeh 1788a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1789a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 1790a40c4f10SYehuda Sadeh __insert_event(osdc, event); 1791a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1792a40c4f10SYehuda Sadeh 1793a40c4f10SYehuda Sadeh *pevent = event; 1794a40c4f10SYehuda Sadeh return 0; 1795a40c4f10SYehuda Sadeh } 1796a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 1797a40c4f10SYehuda Sadeh 1798a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 1799a40c4f10SYehuda Sadeh { 1800a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1801a40c4f10SYehuda Sadeh 1802a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 1803a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1804a40c4f10SYehuda Sadeh __remove_event(event); 1805a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1806a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 1807a40c4f10SYehuda Sadeh } 1808a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 1809a40c4f10SYehuda Sadeh 1810a40c4f10SYehuda Sadeh 1811a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 1812a40c4f10SYehuda Sadeh { 1813a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 1814a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 1815a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 1816a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 1817a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 1818a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 1819a40c4f10SYehuda Sadeh 1820a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 1821a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 1822a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 1823a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1824a40c4f10SYehuda Sadeh kfree(event_work); 1825a40c4f10SYehuda Sadeh } 1826a40c4f10SYehuda Sadeh 1827a40c4f10SYehuda Sadeh 1828a40c4f10SYehuda Sadeh /* 1829a40c4f10SYehuda Sadeh * Process osd watch notifications 1830a40c4f10SYehuda Sadeh */ 18313c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 18323c663bbdSAlex Elder struct ceph_msg *msg) 1833a40c4f10SYehuda Sadeh { 1834a40c4f10SYehuda Sadeh void *p, *end; 1835a40c4f10SYehuda Sadeh u8 proto_ver; 1836a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 1837a40c4f10SYehuda Sadeh u8 opcode; 1838a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1839a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 1840a40c4f10SYehuda Sadeh 1841a40c4f10SYehuda Sadeh p = msg->front.iov_base; 1842a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 1843a40c4f10SYehuda Sadeh 1844a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 1845a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 1846a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 1847a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 1848a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 1849a40c4f10SYehuda Sadeh 1850a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1851a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 1852a40c4f10SYehuda Sadeh if (event) { 18533c663bbdSAlex Elder BUG_ON(event->one_shot); 1854a40c4f10SYehuda Sadeh get_event(event); 1855a40c4f10SYehuda Sadeh } 1856a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1857a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 1858a40c4f10SYehuda Sadeh cookie, ver, event); 1859a40c4f10SYehuda Sadeh if (event) { 1860a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 1861a40c4f10SYehuda Sadeh if (!event_work) { 1862a40c4f10SYehuda Sadeh dout("ERROR: could not allocate event_work\n"); 1863a40c4f10SYehuda Sadeh goto done_err; 1864a40c4f10SYehuda Sadeh } 18656b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 1866a40c4f10SYehuda Sadeh event_work->event = event; 1867a40c4f10SYehuda Sadeh event_work->ver = ver; 1868a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 1869a40c4f10SYehuda Sadeh event_work->opcode = opcode; 1870a40c4f10SYehuda Sadeh if (!queue_work(osdc->notify_wq, &event_work->work)) { 1871a40c4f10SYehuda Sadeh dout("WARNING: failed to queue notify event work\n"); 1872a40c4f10SYehuda Sadeh goto done_err; 1873a40c4f10SYehuda Sadeh } 1874a40c4f10SYehuda Sadeh } 1875a40c4f10SYehuda Sadeh 1876a40c4f10SYehuda Sadeh return; 1877a40c4f10SYehuda Sadeh 1878a40c4f10SYehuda Sadeh done_err: 1879a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1880a40c4f10SYehuda Sadeh return; 1881a40c4f10SYehuda Sadeh 1882a40c4f10SYehuda Sadeh bad: 1883a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 1884a40c4f10SYehuda Sadeh return; 1885a40c4f10SYehuda Sadeh } 1886a40c4f10SYehuda Sadeh 188770636773SAlex Elder static void ceph_osdc_msg_data_set(struct ceph_msg *msg, 188870636773SAlex Elder struct ceph_osd_data *osd_data) 188970636773SAlex Elder { 189070636773SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 189170636773SAlex Elder BUG_ON(osd_data->length > (u64) SIZE_MAX); 189270636773SAlex Elder if (osd_data->length) 189370636773SAlex Elder ceph_msg_data_set_pages(msg, osd_data->pages, 189470636773SAlex Elder osd_data->length, osd_data->alignment); 18959a5e6d09SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 18969a5e6d09SAlex Elder BUG_ON(!osd_data->pagelist->length); 18979a5e6d09SAlex Elder ceph_msg_data_set_pagelist(msg, osd_data->pagelist); 189870636773SAlex Elder #ifdef CONFIG_BLOCK 189970636773SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 1900a1930804SAlex Elder ceph_msg_data_set_bio(msg, osd_data->bio, osd_data->bio_length); 190170636773SAlex Elder #endif 190270636773SAlex Elder } else { 190370636773SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 190470636773SAlex Elder } 190570636773SAlex Elder } 190670636773SAlex Elder 1907a40c4f10SYehuda Sadeh /* 19083d14c5d2SYehuda Sadeh * Register request, send initial attempt. 19093d14c5d2SYehuda Sadeh */ 19103d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 19113d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 19123d14c5d2SYehuda Sadeh bool nofail) 19133d14c5d2SYehuda Sadeh { 19143d14c5d2SYehuda Sadeh int rc = 0; 19153d14c5d2SYehuda Sadeh 191670636773SAlex Elder /* Set up response incoming data and request outgoing data fields */ 19170fff87ecSAlex Elder 191870636773SAlex Elder ceph_osdc_msg_data_set(req->r_reply, &req->r_data_in); 191970636773SAlex Elder ceph_osdc_msg_data_set(req->r_request, &req->r_data_out); 19203d14c5d2SYehuda Sadeh 19213d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 19223d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1923dc4b870cSAlex Elder __register_request(osdc, req); 192492451b49SAlex Elder WARN_ON(req->r_sent); 192538d6453cSSage Weil rc = __map_request(osdc, req, 0); 19269d6fcb08SSage Weil if (rc < 0) { 19279d6fcb08SSage Weil if (nofail) { 19289d6fcb08SSage Weil dout("osdc_start_request failed map, " 19299d6fcb08SSage Weil " will retry %lld\n", req->r_tid); 19309d6fcb08SSage Weil rc = 0; 19319d6fcb08SSage Weil } 1932234af26fSDan Carpenter goto out_unlock; 19339d6fcb08SSage Weil } 19346f6c7006SSage Weil if (req->r_osd == NULL) { 19356f6c7006SSage Weil dout("send_request %p no up osds in pg\n", req); 19366f6c7006SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 19376f6c7006SSage Weil } else { 19387e2766a1SAlex Elder __send_queued(osdc); 193956e925b6SSage Weil } 19403d14c5d2SYehuda Sadeh rc = 0; 1941234af26fSDan Carpenter out_unlock: 19423d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19433d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 19443d14c5d2SYehuda Sadeh return rc; 19453d14c5d2SYehuda Sadeh } 19463d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 19473d14c5d2SYehuda Sadeh 19483d14c5d2SYehuda Sadeh /* 19493d14c5d2SYehuda Sadeh * wait for a request to complete 19503d14c5d2SYehuda Sadeh */ 19513d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 19523d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 19533d14c5d2SYehuda Sadeh { 19543d14c5d2SYehuda Sadeh int rc; 19553d14c5d2SYehuda Sadeh 19563d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 19573d14c5d2SYehuda Sadeh if (rc < 0) { 19583d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19593d14c5d2SYehuda Sadeh __cancel_request(req); 19603d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 19613d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 196225845472SSage Weil complete_request(req); 19633d14c5d2SYehuda Sadeh dout("wait_request tid %llu canceled/timed out\n", req->r_tid); 19643d14c5d2SYehuda Sadeh return rc; 19653d14c5d2SYehuda Sadeh } 19663d14c5d2SYehuda Sadeh 19673d14c5d2SYehuda Sadeh dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); 19683d14c5d2SYehuda Sadeh return req->r_result; 19693d14c5d2SYehuda Sadeh } 19703d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 19713d14c5d2SYehuda Sadeh 19723d14c5d2SYehuda Sadeh /* 19733d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 19743d14c5d2SYehuda Sadeh */ 19753d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 19763d14c5d2SYehuda Sadeh { 19773d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 19783d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 19793d14c5d2SYehuda Sadeh 19803d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19813d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 19823d14c5d2SYehuda Sadeh while (1) { 19833d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 19843d14c5d2SYehuda Sadeh if (!req) 19853d14c5d2SYehuda Sadeh break; 19863d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 19873d14c5d2SYehuda Sadeh break; 19883d14c5d2SYehuda Sadeh 19893d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 19903d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 19913d14c5d2SYehuda Sadeh continue; 19923d14c5d2SYehuda Sadeh 19933d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 19943d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19953d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 19963d14c5d2SYehuda Sadeh req->r_tid, last_tid); 19973d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 19983d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19993d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 20003d14c5d2SYehuda Sadeh } 20013d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 20023d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 20033d14c5d2SYehuda Sadeh } 20043d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 20053d14c5d2SYehuda Sadeh 20063d14c5d2SYehuda Sadeh /* 20073d14c5d2SYehuda Sadeh * init, shutdown 20083d14c5d2SYehuda Sadeh */ 20093d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 20103d14c5d2SYehuda Sadeh { 20113d14c5d2SYehuda Sadeh int err; 20123d14c5d2SYehuda Sadeh 20133d14c5d2SYehuda Sadeh dout("init\n"); 20143d14c5d2SYehuda Sadeh osdc->client = client; 20153d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 20163d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 20173d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 20183d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 20193d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 20203d14c5d2SYehuda Sadeh osdc->last_tid = 0; 20213d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 20223d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 20233d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 20243d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 20256f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 20266f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2027a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 20283d14c5d2SYehuda Sadeh osdc->num_requests = 0; 20293d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 20303d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2031a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2032a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2033a40c4f10SYehuda Sadeh osdc->event_count = 0; 20343d14c5d2SYehuda Sadeh 20353d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 20363d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 20373d14c5d2SYehuda Sadeh 20383d14c5d2SYehuda Sadeh err = -ENOMEM; 20393d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 20403d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 20413d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 20423d14c5d2SYehuda Sadeh goto out; 20433d14c5d2SYehuda Sadeh 2044d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2045d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 20463d14c5d2SYehuda Sadeh "osd_op"); 20473d14c5d2SYehuda Sadeh if (err < 0) 20483d14c5d2SYehuda Sadeh goto out_mempool; 2049d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 20503d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 20513d14c5d2SYehuda Sadeh "osd_op_reply"); 20523d14c5d2SYehuda Sadeh if (err < 0) 20533d14c5d2SYehuda Sadeh goto out_msgpool; 2054a40c4f10SYehuda Sadeh 2055a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2056a40c4f10SYehuda Sadeh if (IS_ERR(osdc->notify_wq)) { 2057a40c4f10SYehuda Sadeh err = PTR_ERR(osdc->notify_wq); 2058a40c4f10SYehuda Sadeh osdc->notify_wq = NULL; 2059a40c4f10SYehuda Sadeh goto out_msgpool; 2060a40c4f10SYehuda Sadeh } 20613d14c5d2SYehuda Sadeh return 0; 20623d14c5d2SYehuda Sadeh 20633d14c5d2SYehuda Sadeh out_msgpool: 20643d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 20653d14c5d2SYehuda Sadeh out_mempool: 20663d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 20673d14c5d2SYehuda Sadeh out: 20683d14c5d2SYehuda Sadeh return err; 20693d14c5d2SYehuda Sadeh } 20703d14c5d2SYehuda Sadeh 20713d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 20723d14c5d2SYehuda Sadeh { 2073a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2074a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 20753d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 20763d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 20773d14c5d2SYehuda Sadeh if (osdc->osdmap) { 20783d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 20793d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 20803d14c5d2SYehuda Sadeh } 2081aca420bcSSage Weil remove_all_osds(osdc); 20823d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 20833d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 20843d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 20853d14c5d2SYehuda Sadeh } 20863d14c5d2SYehuda Sadeh 20873d14c5d2SYehuda Sadeh /* 20883d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 20893d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 20903d14c5d2SYehuda Sadeh */ 20913d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 20923d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 20933d14c5d2SYehuda Sadeh u64 off, u64 *plen, 20943d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2095b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 20963d14c5d2SYehuda Sadeh { 20973d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 2098acead002SAlex Elder struct ceph_osd_req_op op; 20993d14c5d2SYehuda Sadeh int rc = 0; 21003d14c5d2SYehuda Sadeh 21013d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 21023d14c5d2SYehuda Sadeh vino.snap, off, *plen); 2103acead002SAlex Elder req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1, &op, 21043d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2105acead002SAlex Elder NULL, truncate_seq, truncate_size, 2106153e5167SAlex Elder false); 21076816282dSSage Weil if (IS_ERR(req)) 21086816282dSSage Weil return PTR_ERR(req); 21093d14c5d2SYehuda Sadeh 21103d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 21110fff87ecSAlex Elder 211243bfe5deSAlex Elder ceph_osd_data_pages_init(&req->r_data_in, pages, *plen, page_align, 211343bfe5deSAlex Elder false, false); 21143d14c5d2SYehuda Sadeh 2115e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 211643bfe5deSAlex Elder off, *plen, *plen, page_align); 21173d14c5d2SYehuda Sadeh 211802ee07d3SAlex Elder ceph_osdc_build_request(req, off, 1, &op, NULL, vino.snap, NULL); 211902ee07d3SAlex Elder 21203d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 21213d14c5d2SYehuda Sadeh if (!rc) 21223d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 21233d14c5d2SYehuda Sadeh 21243d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 21253d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 21263d14c5d2SYehuda Sadeh return rc; 21273d14c5d2SYehuda Sadeh } 21283d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 21293d14c5d2SYehuda Sadeh 21303d14c5d2SYehuda Sadeh /* 21313d14c5d2SYehuda Sadeh * do a synchronous write on N pages 21323d14c5d2SYehuda Sadeh */ 21333d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 21343d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 21353d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 21363d14c5d2SYehuda Sadeh u64 off, u64 len, 21373d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 21383d14c5d2SYehuda Sadeh struct timespec *mtime, 213924808826SAlex Elder struct page **pages, int num_pages) 21403d14c5d2SYehuda Sadeh { 21413d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 2142acead002SAlex Elder struct ceph_osd_req_op op; 21433d14c5d2SYehuda Sadeh int rc = 0; 2144b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 21453d14c5d2SYehuda Sadeh 2146acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 2147acead002SAlex Elder req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1, &op, 21483d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 214924808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2150acead002SAlex Elder snapc, truncate_seq, truncate_size, 2151153e5167SAlex Elder true); 21526816282dSSage Weil if (IS_ERR(req)) 21536816282dSSage Weil return PTR_ERR(req); 21543d14c5d2SYehuda Sadeh 21553d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 215643bfe5deSAlex Elder ceph_osd_data_pages_init(&req->r_data_out, pages, len, page_align, 215743bfe5deSAlex Elder false, false); 215843bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 21593d14c5d2SYehuda Sadeh 216002ee07d3SAlex Elder ceph_osdc_build_request(req, off, 1, &op, snapc, CEPH_NOSNAP, mtime); 216102ee07d3SAlex Elder 216287f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 21633d14c5d2SYehuda Sadeh if (!rc) 21643d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 21653d14c5d2SYehuda Sadeh 21663d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 21673d14c5d2SYehuda Sadeh if (rc == 0) 21683d14c5d2SYehuda Sadeh rc = len; 21693d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 21703d14c5d2SYehuda Sadeh return rc; 21713d14c5d2SYehuda Sadeh } 21723d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 21733d14c5d2SYehuda Sadeh 21743d14c5d2SYehuda Sadeh /* 21753d14c5d2SYehuda Sadeh * handle incoming message 21763d14c5d2SYehuda Sadeh */ 21773d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 21783d14c5d2SYehuda Sadeh { 21793d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 21803d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 21813d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 21823d14c5d2SYehuda Sadeh 21833d14c5d2SYehuda Sadeh if (!osd) 21843d14c5d2SYehuda Sadeh goto out; 21853d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 21863d14c5d2SYehuda Sadeh 21873d14c5d2SYehuda Sadeh switch (type) { 21883d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 21893d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 21903d14c5d2SYehuda Sadeh break; 21913d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 21923d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 21933d14c5d2SYehuda Sadeh break; 2194a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2195a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2196a40c4f10SYehuda Sadeh break; 21973d14c5d2SYehuda Sadeh 21983d14c5d2SYehuda Sadeh default: 21993d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 22003d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 22013d14c5d2SYehuda Sadeh } 22023d14c5d2SYehuda Sadeh out: 22033d14c5d2SYehuda Sadeh ceph_msg_put(msg); 22043d14c5d2SYehuda Sadeh } 22053d14c5d2SYehuda Sadeh 22063d14c5d2SYehuda Sadeh /* 22073d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 22083d14c5d2SYehuda Sadeh * pages. 22093d14c5d2SYehuda Sadeh */ 22103d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 22113d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 22123d14c5d2SYehuda Sadeh int *skip) 22133d14c5d2SYehuda Sadeh { 22143d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22153d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 22163d14c5d2SYehuda Sadeh struct ceph_msg *m; 22173d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 22183d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 22193d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 22203d14c5d2SYehuda Sadeh u64 tid; 22213d14c5d2SYehuda Sadeh 22223d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 22233d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 22243d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 22253d14c5d2SYehuda Sadeh if (!req) { 22263d14c5d2SYehuda Sadeh *skip = 1; 22273d14c5d2SYehuda Sadeh m = NULL; 2228756a16a5SSage Weil dout("get_reply unknown tid %llu from osd%d\n", tid, 22293d14c5d2SYehuda Sadeh osd->o_osd); 22303d14c5d2SYehuda Sadeh goto out; 22313d14c5d2SYehuda Sadeh } 22323d14c5d2SYehuda Sadeh 2233ace6d3a9SAlex Elder if (req->r_reply->con) 22348921d114SAlex Elder dout("%s revoking msg %p from old con %p\n", __func__, 2235ace6d3a9SAlex Elder req->r_reply, req->r_reply->con); 22368921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 22373d14c5d2SYehuda Sadeh 22383d14c5d2SYehuda Sadeh if (front > req->r_reply->front.iov_len) { 22393d14c5d2SYehuda Sadeh pr_warning("get_reply front %d > preallocated %d\n", 22403d14c5d2SYehuda Sadeh front, (int)req->r_reply->front.iov_len); 2241b61c2763SSage Weil m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); 22423d14c5d2SYehuda Sadeh if (!m) 22433d14c5d2SYehuda Sadeh goto out; 22443d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 22453d14c5d2SYehuda Sadeh req->r_reply = m; 22463d14c5d2SYehuda Sadeh } 22473d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 22483d14c5d2SYehuda Sadeh 22493d14c5d2SYehuda Sadeh if (data_len > 0) { 22500fff87ecSAlex Elder struct ceph_osd_data *osd_data = &req->r_data_in; 22510fff87ecSAlex Elder 22520fff87ecSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 22530fff87ecSAlex Elder if (osd_data->pages && 2254e0c59487SAlex Elder unlikely(osd_data->length < data_len)) { 22552ac2b7a6SAlex Elder 2256e0c59487SAlex Elder pr_warning("tid %lld reply has %d bytes " 2257e0c59487SAlex Elder "we had only %llu bytes ready\n", 2258e0c59487SAlex Elder tid, data_len, osd_data->length); 22593d14c5d2SYehuda Sadeh *skip = 1; 22603d14c5d2SYehuda Sadeh ceph_msg_put(m); 22613d14c5d2SYehuda Sadeh m = NULL; 22623d14c5d2SYehuda Sadeh goto out; 22633d14c5d2SYehuda Sadeh } 22643d14c5d2SYehuda Sadeh } 22652ac2b7a6SAlex Elder } 22663d14c5d2SYehuda Sadeh *skip = 0; 22673d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 22683d14c5d2SYehuda Sadeh 22693d14c5d2SYehuda Sadeh out: 22703d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 22713d14c5d2SYehuda Sadeh return m; 22723d14c5d2SYehuda Sadeh 22733d14c5d2SYehuda Sadeh } 22743d14c5d2SYehuda Sadeh 22753d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 22763d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 22773d14c5d2SYehuda Sadeh int *skip) 22783d14c5d2SYehuda Sadeh { 22793d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 22803d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 22813d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 22823d14c5d2SYehuda Sadeh 22831c20f2d2SAlex Elder *skip = 0; 22843d14c5d2SYehuda Sadeh switch (type) { 22853d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2286a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2287b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 22883d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 22893d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 22903d14c5d2SYehuda Sadeh default: 22913d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 22923d14c5d2SYehuda Sadeh osd->o_osd); 22933d14c5d2SYehuda Sadeh *skip = 1; 22943d14c5d2SYehuda Sadeh return NULL; 22953d14c5d2SYehuda Sadeh } 22963d14c5d2SYehuda Sadeh } 22973d14c5d2SYehuda Sadeh 22983d14c5d2SYehuda Sadeh /* 22993d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 23003d14c5d2SYehuda Sadeh */ 23013d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 23023d14c5d2SYehuda Sadeh { 23033d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 23043d14c5d2SYehuda Sadeh if (get_osd(osd)) 23053d14c5d2SYehuda Sadeh return con; 23063d14c5d2SYehuda Sadeh return NULL; 23073d14c5d2SYehuda Sadeh } 23083d14c5d2SYehuda Sadeh 23093d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 23103d14c5d2SYehuda Sadeh { 23113d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 23123d14c5d2SYehuda Sadeh put_osd(osd); 23133d14c5d2SYehuda Sadeh } 23143d14c5d2SYehuda Sadeh 23153d14c5d2SYehuda Sadeh /* 23163d14c5d2SYehuda Sadeh * authentication 23173d14c5d2SYehuda Sadeh */ 2318a3530df3SAlex Elder /* 2319a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2320a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2321a3530df3SAlex Elder */ 2322a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 23238f43fb53SAlex Elder int *proto, int force_new) 23243d14c5d2SYehuda Sadeh { 23253d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23263d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23273d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 232874f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 23293d14c5d2SYehuda Sadeh 233074f1869fSAlex Elder if (force_new && auth->authorizer) { 233127859f97SSage Weil ceph_auth_destroy_authorizer(ac, auth->authorizer); 233274f1869fSAlex Elder auth->authorizer = NULL; 23333d14c5d2SYehuda Sadeh } 233427859f97SSage Weil if (!auth->authorizer) { 233527859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2336a3530df3SAlex Elder auth); 23373d14c5d2SYehuda Sadeh if (ret) 2338a3530df3SAlex Elder return ERR_PTR(ret); 233927859f97SSage Weil } else { 234027859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 23410bed9b5cSSage Weil auth); 23420bed9b5cSSage Weil if (ret) 23430bed9b5cSSage Weil return ERR_PTR(ret); 23443d14c5d2SYehuda Sadeh } 23453d14c5d2SYehuda Sadeh *proto = ac->protocol; 234674f1869fSAlex Elder 2347a3530df3SAlex Elder return auth; 23483d14c5d2SYehuda Sadeh } 23493d14c5d2SYehuda Sadeh 23503d14c5d2SYehuda Sadeh 23513d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 23523d14c5d2SYehuda Sadeh { 23533d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23543d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23553d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 23563d14c5d2SYehuda Sadeh 235727859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 23583d14c5d2SYehuda Sadeh } 23593d14c5d2SYehuda Sadeh 23603d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 23613d14c5d2SYehuda Sadeh { 23623d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 23633d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 23643d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 23653d14c5d2SYehuda Sadeh 236627859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 23673d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 23683d14c5d2SYehuda Sadeh } 23693d14c5d2SYehuda Sadeh 23703d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 23713d14c5d2SYehuda Sadeh .get = get_osd_con, 23723d14c5d2SYehuda Sadeh .put = put_osd_con, 23733d14c5d2SYehuda Sadeh .dispatch = dispatch, 23743d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 23753d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 23763d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 23773d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 23783d14c5d2SYehuda Sadeh .fault = osd_reset, 23793d14c5d2SYehuda Sadeh }; 2380