13d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 23d14c5d2SYehuda Sadeh 33d14c5d2SYehuda Sadeh #include <linux/module.h> 43d14c5d2SYehuda Sadeh #include <linux/err.h> 53d14c5d2SYehuda Sadeh #include <linux/highmem.h> 63d14c5d2SYehuda Sadeh #include <linux/mm.h> 73d14c5d2SYehuda Sadeh #include <linux/pagemap.h> 83d14c5d2SYehuda Sadeh #include <linux/slab.h> 93d14c5d2SYehuda Sadeh #include <linux/uaccess.h> 103d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 113d14c5d2SYehuda Sadeh #include <linux/bio.h> 123d14c5d2SYehuda Sadeh #endif 133d14c5d2SYehuda Sadeh 143d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 153d14c5d2SYehuda Sadeh #include <linux/ceph/osd_client.h> 163d14c5d2SYehuda Sadeh #include <linux/ceph/messenger.h> 173d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 183d14c5d2SYehuda Sadeh #include <linux/ceph/auth.h> 193d14c5d2SYehuda Sadeh #include <linux/ceph/pagelist.h> 203d14c5d2SYehuda Sadeh 213d14c5d2SYehuda Sadeh #define OSD_OP_FRONT_LEN 4096 223d14c5d2SYehuda Sadeh #define OSD_OPREPLY_FRONT_LEN 512 233d14c5d2SYehuda Sadeh 243d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops; 253d14c5d2SYehuda Sadeh 26f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc); 276f6c7006SSage Weil static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); 28a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 29a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 30a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 31a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 3256e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 33a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 343d14c5d2SYehuda Sadeh 353d14c5d2SYehuda Sadeh static int op_has_extent(int op) 363d14c5d2SYehuda Sadeh { 373d14c5d2SYehuda Sadeh return (op == CEPH_OSD_OP_READ || 383d14c5d2SYehuda Sadeh op == CEPH_OSD_OP_WRITE); 393d14c5d2SYehuda Sadeh } 403d14c5d2SYehuda Sadeh 413d14c5d2SYehuda Sadeh /* 423d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 433d14c5d2SYehuda Sadeh * 443d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 453d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 463d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 473d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 483d14c5d2SYehuda Sadeh * access to storage. 493d14c5d2SYehuda Sadeh * 503d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 513d14c5d2SYehuda Sadeh * are described by the osd map. 523d14c5d2SYehuda Sadeh * 533d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 543d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 553d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 563d14c5d2SYehuda Sadeh * channel with an OSD is reset. 573d14c5d2SYehuda Sadeh */ 583d14c5d2SYehuda Sadeh 593d14c5d2SYehuda Sadeh /* 603d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 613d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 623d14c5d2SYehuda Sadeh * object boundary. 633d14c5d2SYehuda Sadeh * 643d14c5d2SYehuda Sadeh * fill osd op in request message. 653d14c5d2SYehuda Sadeh */ 66dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 6747a05811SAlex Elder struct ceph_osd_req_op *op, u64 *bno) 683d14c5d2SYehuda Sadeh { 6960e56f13SAlex Elder u64 orig_len = *plen; 7060e56f13SAlex Elder u64 objoff = 0; 7160e56f13SAlex Elder u64 objlen = 0; 72d63b77f4SSage Weil int r; 733d14c5d2SYehuda Sadeh 7460e56f13SAlex Elder /* object extent? */ 7547a05811SAlex Elder r = ceph_calc_file_object_mapping(layout, off, orig_len, bno, 7660e56f13SAlex Elder &objoff, &objlen); 77d63b77f4SSage Weil if (r < 0) 78d63b77f4SSage Weil return r; 7960e56f13SAlex Elder if (objlen < orig_len) { 8060e56f13SAlex Elder *plen = objlen; 8160e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 8260e56f13SAlex Elder orig_len - *plen, off, *plen); 8360e56f13SAlex Elder } 8460e56f13SAlex Elder 8560e56f13SAlex Elder if (op_has_extent(op->op)) { 8660e56f13SAlex Elder u32 osize = le32_to_cpu(layout->fl_object_size); 8760e56f13SAlex Elder op->extent.offset = objoff; 8860e56f13SAlex Elder op->extent.length = objlen; 8960e56f13SAlex Elder if (op->extent.truncate_size <= off - objoff) { 9060e56f13SAlex Elder op->extent.truncate_size = 0; 9160e56f13SAlex Elder } else { 9260e56f13SAlex Elder op->extent.truncate_size -= off - objoff; 9360e56f13SAlex Elder if (op->extent.truncate_size > osize) 9460e56f13SAlex Elder op->extent.truncate_size = osize; 9560e56f13SAlex Elder } 9660e56f13SAlex Elder } 9760e56f13SAlex Elder if (op->op == CEPH_OSD_OP_WRITE) 9860e56f13SAlex Elder op->payload_len = *plen; 9960e56f13SAlex Elder 10060cf5992SAlex Elder dout("calc_layout bno=%llx %llu~%llu\n", *bno, objoff, objlen); 1013d14c5d2SYehuda Sadeh 1023ff5f385SAlex Elder return 0; 1033d14c5d2SYehuda Sadeh } 1043d14c5d2SYehuda Sadeh 1053d14c5d2SYehuda Sadeh /* 1063d14c5d2SYehuda Sadeh * requests 1073d14c5d2SYehuda Sadeh */ 1083d14c5d2SYehuda Sadeh void ceph_osdc_release_request(struct kref *kref) 1093d14c5d2SYehuda Sadeh { 110e0c59487SAlex Elder int num_pages; 1113d14c5d2SYehuda Sadeh struct ceph_osd_request *req = container_of(kref, 1123d14c5d2SYehuda Sadeh struct ceph_osd_request, 1133d14c5d2SYehuda Sadeh r_kref); 1143d14c5d2SYehuda Sadeh 1153d14c5d2SYehuda Sadeh if (req->r_request) 1163d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 1173d14c5d2SYehuda Sadeh if (req->r_con_filling_msg) { 1189cbb1d72SAlex Elder dout("%s revoking msg %p from con %p\n", __func__, 1199cbb1d72SAlex Elder req->r_reply, req->r_con_filling_msg); 1208921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 1210d47766fSSage Weil req->r_con_filling_msg->ops->put(req->r_con_filling_msg); 1229cbb1d72SAlex Elder req->r_con_filling_msg = NULL; 1233d14c5d2SYehuda Sadeh } 124ab8cb34aSAlex Elder if (req->r_reply) 125ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 1260fff87ecSAlex Elder 1270fff87ecSAlex Elder if (req->r_data_in.type == CEPH_OSD_DATA_TYPE_PAGES && 128e0c59487SAlex Elder req->r_data_in.own_pages) { 129e0c59487SAlex Elder num_pages = calc_pages_for((u64)req->r_data_in.alignment, 130e0c59487SAlex Elder (u64)req->r_data_in.length); 131e0c59487SAlex Elder ceph_release_page_vector(req->r_data_in.pages, num_pages); 132e0c59487SAlex Elder } 1330fff87ecSAlex Elder if (req->r_data_out.type == CEPH_OSD_DATA_TYPE_PAGES && 134e0c59487SAlex Elder req->r_data_out.own_pages) { 135e0c59487SAlex Elder num_pages = calc_pages_for((u64)req->r_data_out.alignment, 136e0c59487SAlex Elder (u64)req->r_data_out.length); 137e0c59487SAlex Elder ceph_release_page_vector(req->r_data_out.pages, num_pages); 138e0c59487SAlex Elder } 1390fff87ecSAlex Elder 1403d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 141c885837fSAlex Elder ceph_pagelist_release(&req->r_trail); 1423d14c5d2SYehuda Sadeh if (req->r_mempool) 1433d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 1443d14c5d2SYehuda Sadeh else 1453d14c5d2SYehuda Sadeh kfree(req); 1463d14c5d2SYehuda Sadeh } 1473d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_release_request); 1483d14c5d2SYehuda Sadeh 1493d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 1503d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 1511b83bef2SSage Weil unsigned int num_ops, 1523d14c5d2SYehuda Sadeh bool use_mempool, 15354a54007SAlex Elder gfp_t gfp_flags) 1543d14c5d2SYehuda Sadeh { 1553d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1563d14c5d2SYehuda Sadeh struct ceph_msg *msg; 1571b83bef2SSage Weil size_t msg_size; 1583d14c5d2SYehuda Sadeh 1591b83bef2SSage Weil msg_size = 4 + 4 + 8 + 8 + 4+8; 1601b83bef2SSage Weil msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 1611b83bef2SSage Weil msg_size += 1 + 8 + 4 + 4; /* pg_t */ 1621b83bef2SSage Weil msg_size += 4 + MAX_OBJ_NAME_SIZE; 1631b83bef2SSage Weil msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); 1641b83bef2SSage Weil msg_size += 8; /* snapid */ 1651b83bef2SSage Weil msg_size += 8; /* snap_seq */ 1661b83bef2SSage Weil msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ 1671b83bef2SSage Weil msg_size += 4; 1683d14c5d2SYehuda Sadeh 1693d14c5d2SYehuda Sadeh if (use_mempool) { 1703d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 1713d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 1723d14c5d2SYehuda Sadeh } else { 1733d14c5d2SYehuda Sadeh req = kzalloc(sizeof(*req), gfp_flags); 1743d14c5d2SYehuda Sadeh } 1753d14c5d2SYehuda Sadeh if (req == NULL) 1763d14c5d2SYehuda Sadeh return NULL; 1773d14c5d2SYehuda Sadeh 1783d14c5d2SYehuda Sadeh req->r_osdc = osdc; 1793d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 1803d14c5d2SYehuda Sadeh 1813d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 1823d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 1833d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 184a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 1853d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 186a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 187a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_osd); 188935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 189cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 190cd43045cSSage Weil 1913d14c5d2SYehuda Sadeh /* create reply message */ 1923d14c5d2SYehuda Sadeh if (use_mempool) 1933d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 1943d14c5d2SYehuda Sadeh else 1953d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 196b61c2763SSage Weil OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 1973d14c5d2SYehuda Sadeh if (!msg) { 1983d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 1993d14c5d2SYehuda Sadeh return NULL; 2003d14c5d2SYehuda Sadeh } 2013d14c5d2SYehuda Sadeh req->r_reply = msg; 2023d14c5d2SYehuda Sadeh 2030fff87ecSAlex Elder req->r_data_in.type = CEPH_OSD_DATA_TYPE_NONE; 2040fff87ecSAlex Elder req->r_data_out.type = CEPH_OSD_DATA_TYPE_NONE; 205c885837fSAlex Elder ceph_pagelist_init(&req->r_trail); 206d50b409fSSage Weil 2073d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 2083d14c5d2SYehuda Sadeh if (use_mempool) 2093d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 2103d14c5d2SYehuda Sadeh else 211b61c2763SSage Weil msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 2123d14c5d2SYehuda Sadeh if (!msg) { 2133d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 2143d14c5d2SYehuda Sadeh return NULL; 2153d14c5d2SYehuda Sadeh } 2163d14c5d2SYehuda Sadeh 2173d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 2183d14c5d2SYehuda Sadeh 2193d14c5d2SYehuda Sadeh req->r_request = msg; 2203d14c5d2SYehuda Sadeh 2213d14c5d2SYehuda Sadeh return req; 2223d14c5d2SYehuda Sadeh } 2233d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 2243d14c5d2SYehuda Sadeh 225175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 2263d14c5d2SYehuda Sadeh struct ceph_osd_op *dst, 2273d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src) 2283d14c5d2SYehuda Sadeh { 229175face2SAlex Elder u64 out_data_len = 0; 230175face2SAlex Elder u64 tmp; 231175face2SAlex Elder 2323d14c5d2SYehuda Sadeh dst->op = cpu_to_le16(src->op); 2333d14c5d2SYehuda Sadeh 234065a68f9SAlex Elder switch (src->op) { 235fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 236fbfab539SAlex Elder break; 2373d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 2383d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 239175face2SAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 240175face2SAlex Elder out_data_len = src->extent.length; 241175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 242175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 2433d14c5d2SYehuda Sadeh dst->extent.truncate_size = 2443d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 2453d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 2463d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 2473d14c5d2SYehuda Sadeh break; 2483d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 2493d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 2503d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 2513d14c5d2SYehuda Sadeh dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 2523d14c5d2SYehuda Sadeh 253175face2SAlex Elder tmp = req->r_trail.length; 254c885837fSAlex Elder ceph_pagelist_append(&req->r_trail, src->cls.class_name, 2553d14c5d2SYehuda Sadeh src->cls.class_len); 256c885837fSAlex Elder ceph_pagelist_append(&req->r_trail, src->cls.method_name, 2573d14c5d2SYehuda Sadeh src->cls.method_len); 258c885837fSAlex Elder ceph_pagelist_append(&req->r_trail, src->cls.indata, 2593d14c5d2SYehuda Sadeh src->cls.indata_len); 260175face2SAlex Elder out_data_len = req->r_trail.length - tmp; 2613d14c5d2SYehuda Sadeh break; 2623d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 2633d14c5d2SYehuda Sadeh break; 264a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 265a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 266a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 267a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 268a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 269a40c4f10SYehuda Sadeh break; 2703d14c5d2SYehuda Sadeh default: 2718f63ca2dSAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 2723d14c5d2SYehuda Sadeh WARN_ON(1); 2733d14c5d2SYehuda Sadeh break; 2744c46459cSAlex Elder case CEPH_OSD_OP_MAPEXT: 2754c46459cSAlex Elder case CEPH_OSD_OP_MASKTRUNC: 2764c46459cSAlex Elder case CEPH_OSD_OP_SPARSE_READ: 277a9f36c3eSAlex Elder case CEPH_OSD_OP_NOTIFY: 2784c46459cSAlex Elder case CEPH_OSD_OP_ASSERT_VER: 2794c46459cSAlex Elder case CEPH_OSD_OP_WRITEFULL: 2804c46459cSAlex Elder case CEPH_OSD_OP_TRUNCATE: 2814c46459cSAlex Elder case CEPH_OSD_OP_ZERO: 2824c46459cSAlex Elder case CEPH_OSD_OP_DELETE: 2834c46459cSAlex Elder case CEPH_OSD_OP_APPEND: 2844c46459cSAlex Elder case CEPH_OSD_OP_SETTRUNC: 2854c46459cSAlex Elder case CEPH_OSD_OP_TRIMTRUNC: 2864c46459cSAlex Elder case CEPH_OSD_OP_TMAPUP: 2874c46459cSAlex Elder case CEPH_OSD_OP_TMAPPUT: 2884c46459cSAlex Elder case CEPH_OSD_OP_TMAPGET: 2894c46459cSAlex Elder case CEPH_OSD_OP_CREATE: 290a9f36c3eSAlex Elder case CEPH_OSD_OP_ROLLBACK: 2914c46459cSAlex Elder case CEPH_OSD_OP_OMAPGETKEYS: 2924c46459cSAlex Elder case CEPH_OSD_OP_OMAPGETVALS: 2934c46459cSAlex Elder case CEPH_OSD_OP_OMAPGETHEADER: 2944c46459cSAlex Elder case CEPH_OSD_OP_OMAPGETVALSBYKEYS: 2954c46459cSAlex Elder case CEPH_OSD_OP_MODE_RD: 2964c46459cSAlex Elder case CEPH_OSD_OP_OMAPSETVALS: 2974c46459cSAlex Elder case CEPH_OSD_OP_OMAPSETHEADER: 2984c46459cSAlex Elder case CEPH_OSD_OP_OMAPCLEAR: 2994c46459cSAlex Elder case CEPH_OSD_OP_OMAPRMKEYS: 3004c46459cSAlex Elder case CEPH_OSD_OP_OMAP_CMP: 3014c46459cSAlex Elder case CEPH_OSD_OP_CLONERANGE: 3024c46459cSAlex Elder case CEPH_OSD_OP_ASSERT_SRC_VERSION: 3034c46459cSAlex Elder case CEPH_OSD_OP_SRC_CMPXATTR: 304a9f36c3eSAlex Elder case CEPH_OSD_OP_GETXATTR: 3054c46459cSAlex Elder case CEPH_OSD_OP_GETXATTRS: 306a9f36c3eSAlex Elder case CEPH_OSD_OP_CMPXATTR: 307a9f36c3eSAlex Elder case CEPH_OSD_OP_SETXATTR: 3084c46459cSAlex Elder case CEPH_OSD_OP_SETXATTRS: 3094c46459cSAlex Elder case CEPH_OSD_OP_RESETXATTRS: 3104c46459cSAlex Elder case CEPH_OSD_OP_RMXATTR: 3114c46459cSAlex Elder case CEPH_OSD_OP_PULL: 3124c46459cSAlex Elder case CEPH_OSD_OP_PUSH: 3134c46459cSAlex Elder case CEPH_OSD_OP_BALANCEREADS: 3144c46459cSAlex Elder case CEPH_OSD_OP_UNBALANCEREADS: 3154c46459cSAlex Elder case CEPH_OSD_OP_SCRUB: 3164c46459cSAlex Elder case CEPH_OSD_OP_SCRUB_RESERVE: 3174c46459cSAlex Elder case CEPH_OSD_OP_SCRUB_UNRESERVE: 3184c46459cSAlex Elder case CEPH_OSD_OP_SCRUB_STOP: 3194c46459cSAlex Elder case CEPH_OSD_OP_SCRUB_MAP: 3204c46459cSAlex Elder case CEPH_OSD_OP_WRLOCK: 3214c46459cSAlex Elder case CEPH_OSD_OP_WRUNLOCK: 3224c46459cSAlex Elder case CEPH_OSD_OP_RDLOCK: 3234c46459cSAlex Elder case CEPH_OSD_OP_RDUNLOCK: 3244c46459cSAlex Elder case CEPH_OSD_OP_UPLOCK: 3254c46459cSAlex Elder case CEPH_OSD_OP_DNLOCK: 3264c46459cSAlex Elder case CEPH_OSD_OP_PGLS: 3274c46459cSAlex Elder case CEPH_OSD_OP_PGLS_FILTER: 3284c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 3298f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 3304c46459cSAlex Elder WARN_ON(1); 3314c46459cSAlex Elder break; 3323d14c5d2SYehuda Sadeh } 3333d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 334175face2SAlex Elder 335175face2SAlex Elder return out_data_len; 3363d14c5d2SYehuda Sadeh } 3373d14c5d2SYehuda Sadeh 3383d14c5d2SYehuda Sadeh /* 3393d14c5d2SYehuda Sadeh * build new request AND message 3403d14c5d2SYehuda Sadeh * 3413d14c5d2SYehuda Sadeh */ 3423d14c5d2SYehuda Sadeh void ceph_osdc_build_request(struct ceph_osd_request *req, 343175face2SAlex Elder u64 off, unsigned int num_ops, 3443d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_ops, 3454d6b250bSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 346af77f26cSAlex Elder struct timespec *mtime) 3473d14c5d2SYehuda Sadeh { 3483d14c5d2SYehuda Sadeh struct ceph_msg *msg = req->r_request; 3493d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_op; 3503d14c5d2SYehuda Sadeh void *p; 3511b83bef2SSage Weil size_t msg_size; 3523d14c5d2SYehuda Sadeh int flags = req->r_flags; 353f44246e3SAlex Elder u64 data_len; 3543d14c5d2SYehuda Sadeh int i; 3553d14c5d2SYehuda Sadeh 3561b83bef2SSage Weil req->r_num_ops = num_ops; 3571b83bef2SSage Weil req->r_snapid = snap_id; 3583d14c5d2SYehuda Sadeh req->r_snapc = ceph_get_snap_context(snapc); 3593d14c5d2SYehuda Sadeh 3601b83bef2SSage Weil /* encode request */ 3611b83bef2SSage Weil msg->hdr.version = cpu_to_le16(4); 3623d14c5d2SYehuda Sadeh 3631b83bef2SSage Weil p = msg->front.iov_base; 3641b83bef2SSage Weil ceph_encode_32(&p, 1); /* client_inc is always 1 */ 3651b83bef2SSage Weil req->r_request_osdmap_epoch = p; 3661b83bef2SSage Weil p += 4; 3671b83bef2SSage Weil req->r_request_flags = p; 3681b83bef2SSage Weil p += 4; 3691b83bef2SSage Weil if (req->r_flags & CEPH_OSD_FLAG_WRITE) 3701b83bef2SSage Weil ceph_encode_timespec(p, mtime); 3711b83bef2SSage Weil p += sizeof(struct ceph_timespec); 3721b83bef2SSage Weil req->r_request_reassert_version = p; 3731b83bef2SSage Weil p += sizeof(struct ceph_eversion); /* will get filled in */ 3741b83bef2SSage Weil 3751b83bef2SSage Weil /* oloc */ 3761b83bef2SSage Weil ceph_encode_8(&p, 4); 3771b83bef2SSage Weil ceph_encode_8(&p, 4); 3781b83bef2SSage Weil ceph_encode_32(&p, 8 + 4 + 4); 3791b83bef2SSage Weil req->r_request_pool = p; 3801b83bef2SSage Weil p += 8; 3811b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 3821b83bef2SSage Weil ceph_encode_32(&p, 0); /* key len */ 3831b83bef2SSage Weil 3841b83bef2SSage Weil ceph_encode_8(&p, 1); 3851b83bef2SSage Weil req->r_request_pgid = p; 3861b83bef2SSage Weil p += 8 + 4; 3871b83bef2SSage Weil ceph_encode_32(&p, -1); /* preferred */ 3881b83bef2SSage Weil 3891b83bef2SSage Weil /* oid */ 3901b83bef2SSage Weil ceph_encode_32(&p, req->r_oid_len); 391af77f26cSAlex Elder memcpy(p, req->r_oid, req->r_oid_len); 3921b83bef2SSage Weil dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len); 393af77f26cSAlex Elder p += req->r_oid_len; 3943d14c5d2SYehuda Sadeh 395175face2SAlex Elder /* ops--can imply data */ 3961b83bef2SSage Weil ceph_encode_16(&p, num_ops); 3973d14c5d2SYehuda Sadeh src_op = src_ops; 3981b83bef2SSage Weil req->r_request_ops = p; 399175face2SAlex Elder data_len = 0; 4001b83bef2SSage Weil for (i = 0; i < num_ops; i++, src_op++) { 401175face2SAlex Elder data_len += osd_req_encode_op(req, p, src_op); 4021b83bef2SSage Weil p += sizeof(struct ceph_osd_op); 4031b83bef2SSage Weil } 4043d14c5d2SYehuda Sadeh 4051b83bef2SSage Weil /* snaps */ 4061b83bef2SSage Weil ceph_encode_64(&p, req->r_snapid); 4071b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 4081b83bef2SSage Weil ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 4091b83bef2SSage Weil if (req->r_snapc) { 4103d14c5d2SYehuda Sadeh for (i = 0; i < snapc->num_snaps; i++) { 4111b83bef2SSage Weil ceph_encode_64(&p, req->r_snapc->snaps[i]); 4123d14c5d2SYehuda Sadeh } 4133d14c5d2SYehuda Sadeh } 4143d14c5d2SYehuda Sadeh 4151b83bef2SSage Weil req->r_request_attempts = p; 4161b83bef2SSage Weil p += 4; 4171b83bef2SSage Weil 418175face2SAlex Elder /* data */ 419175face2SAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) 4203d14c5d2SYehuda Sadeh req->r_request->hdr.data_off = cpu_to_le16(off); 421f44246e3SAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 422c5c6b19dSSage Weil 4233d14c5d2SYehuda Sadeh BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 4243d14c5d2SYehuda Sadeh msg_size = p - msg->front.iov_base; 4253d14c5d2SYehuda Sadeh msg->front.iov_len = msg_size; 4263d14c5d2SYehuda Sadeh msg->hdr.front_len = cpu_to_le32(msg_size); 4271b83bef2SSage Weil 4281b83bef2SSage Weil dout("build_request msg_size was %d num_ops %d\n", (int)msg_size, 4291b83bef2SSage Weil num_ops); 4303d14c5d2SYehuda Sadeh return; 4313d14c5d2SYehuda Sadeh } 4323d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_build_request); 4333d14c5d2SYehuda Sadeh 4343d14c5d2SYehuda Sadeh /* 4353d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 4363d14c5d2SYehuda Sadeh * extent as needed. 4373d14c5d2SYehuda Sadeh * 4383d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 4393d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 4403d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 4413d14c5d2SYehuda Sadeh * 4423d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 4433d14c5d2SYehuda Sadeh * data quickly. 4443d14c5d2SYehuda Sadeh */ 4453d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 4463d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 4473d14c5d2SYehuda Sadeh struct ceph_vino vino, 4483d14c5d2SYehuda Sadeh u64 off, u64 *plen, 4493d14c5d2SYehuda Sadeh int opcode, int flags, 4503d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 4513d14c5d2SYehuda Sadeh int do_sync, 4523d14c5d2SYehuda Sadeh u32 truncate_seq, 4533d14c5d2SYehuda Sadeh u64 truncate_size, 4543d14c5d2SYehuda Sadeh struct timespec *mtime, 455153e5167SAlex Elder bool use_mempool) 4563d14c5d2SYehuda Sadeh { 457ae7ca4a3SAlex Elder struct ceph_osd_req_op ops[2]; 4583d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 459ae7ca4a3SAlex Elder unsigned int num_op = 1; 46047a05811SAlex Elder u64 bno = 0; 4616816282dSSage Weil int r; 4623d14c5d2SYehuda Sadeh 463ae7ca4a3SAlex Elder memset(&ops, 0, sizeof ops); 464ae7ca4a3SAlex Elder 4653d14c5d2SYehuda Sadeh ops[0].op = opcode; 4663d14c5d2SYehuda Sadeh ops[0].extent.truncate_seq = truncate_seq; 4673d14c5d2SYehuda Sadeh ops[0].extent.truncate_size = truncate_size; 4683d14c5d2SYehuda Sadeh 4693d14c5d2SYehuda Sadeh if (do_sync) { 4703d14c5d2SYehuda Sadeh ops[1].op = CEPH_OSD_OP_STARTSYNC; 471ae7ca4a3SAlex Elder num_op++; 472ae7ca4a3SAlex Elder } 4733d14c5d2SYehuda Sadeh 474ae7ca4a3SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_op, use_mempool, 475ae7ca4a3SAlex Elder GFP_NOFS); 4764ad12621SSage Weil if (!req) 4776816282dSSage Weil return ERR_PTR(-ENOMEM); 478d178a9e7SAlex Elder req->r_flags = flags; 4793d14c5d2SYehuda Sadeh 4803d14c5d2SYehuda Sadeh /* calculate max write size */ 48160cf5992SAlex Elder r = calc_layout(layout, off, plen, ops, &bno); 4823ff5f385SAlex Elder if (r < 0) { 4833ff5f385SAlex Elder ceph_osdc_put_request(req); 4846816282dSSage Weil return ERR_PTR(r); 4853ff5f385SAlex Elder } 4863d14c5d2SYehuda Sadeh req->r_file_layout = *layout; /* keep a copy */ 4873d14c5d2SYehuda Sadeh 488dbe0fc41SAlex Elder snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno); 489dbe0fc41SAlex Elder req->r_oid_len = strlen(req->r_oid); 490dbe0fc41SAlex Elder 491175face2SAlex Elder ceph_osdc_build_request(req, off, num_op, ops, 492ae7ca4a3SAlex Elder snapc, vino.snap, mtime); 4933d14c5d2SYehuda Sadeh 4943d14c5d2SYehuda Sadeh return req; 4953d14c5d2SYehuda Sadeh } 4963d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 4973d14c5d2SYehuda Sadeh 4983d14c5d2SYehuda Sadeh /* 4993d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 5003d14c5d2SYehuda Sadeh */ 5013d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 5023d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 5033d14c5d2SYehuda Sadeh { 5043d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 5053d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 5063d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 5073d14c5d2SYehuda Sadeh 5083d14c5d2SYehuda Sadeh while (*p) { 5093d14c5d2SYehuda Sadeh parent = *p; 5103d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 5113d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 5123d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 5133d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 5143d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 5153d14c5d2SYehuda Sadeh else 5163d14c5d2SYehuda Sadeh BUG(); 5173d14c5d2SYehuda Sadeh } 5183d14c5d2SYehuda Sadeh 5193d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 5203d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 5213d14c5d2SYehuda Sadeh } 5223d14c5d2SYehuda Sadeh 5233d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 5243d14c5d2SYehuda Sadeh u64 tid) 5253d14c5d2SYehuda Sadeh { 5263d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5273d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 5283d14c5d2SYehuda Sadeh 5293d14c5d2SYehuda Sadeh while (n) { 5303d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 5313d14c5d2SYehuda Sadeh if (tid < req->r_tid) 5323d14c5d2SYehuda Sadeh n = n->rb_left; 5333d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 5343d14c5d2SYehuda Sadeh n = n->rb_right; 5353d14c5d2SYehuda Sadeh else 5363d14c5d2SYehuda Sadeh return req; 5373d14c5d2SYehuda Sadeh } 5383d14c5d2SYehuda Sadeh return NULL; 5393d14c5d2SYehuda Sadeh } 5403d14c5d2SYehuda Sadeh 5413d14c5d2SYehuda Sadeh static struct ceph_osd_request * 5423d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 5433d14c5d2SYehuda Sadeh u64 tid) 5443d14c5d2SYehuda Sadeh { 5453d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5463d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 5473d14c5d2SYehuda Sadeh 5483d14c5d2SYehuda Sadeh while (n) { 5493d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 5503d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 5513d14c5d2SYehuda Sadeh if (!n->rb_left) 5523d14c5d2SYehuda Sadeh return req; 5533d14c5d2SYehuda Sadeh n = n->rb_left; 5543d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 5553d14c5d2SYehuda Sadeh n = n->rb_right; 5563d14c5d2SYehuda Sadeh } else { 5573d14c5d2SYehuda Sadeh return req; 5583d14c5d2SYehuda Sadeh } 5593d14c5d2SYehuda Sadeh } 5603d14c5d2SYehuda Sadeh return NULL; 5613d14c5d2SYehuda Sadeh } 5623d14c5d2SYehuda Sadeh 5636f6c7006SSage Weil /* 5646f6c7006SSage Weil * Resubmit requests pending on the given osd. 5656f6c7006SSage Weil */ 5666f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 5676f6c7006SSage Weil struct ceph_osd *osd) 5686f6c7006SSage Weil { 569a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 5706f6c7006SSage Weil int err; 5716f6c7006SSage Weil 5726f6c7006SSage Weil dout("__kick_osd_requests osd%d\n", osd->o_osd); 5736f6c7006SSage Weil err = __reset_osd(osdc, osd); 574685a7555SAlex Elder if (err) 5756f6c7006SSage Weil return; 5766f6c7006SSage Weil 5776f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 5786f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_unsent); 5796f6c7006SSage Weil dout("requeued %p tid %llu osd%d\n", req, req->r_tid, 5806f6c7006SSage Weil osd->o_osd); 581a40c4f10SYehuda Sadeh if (!req->r_linger) 5826f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 5836f6c7006SSage Weil } 584a40c4f10SYehuda Sadeh 585a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 586a40c4f10SYehuda Sadeh r_linger_osd) { 58777f38e0eSSage Weil /* 58877f38e0eSSage Weil * reregister request prior to unregistering linger so 58977f38e0eSSage Weil * that r_osd is preserved. 59077f38e0eSSage Weil */ 59177f38e0eSSage Weil BUG_ON(!list_empty(&req->r_req_lru_item)); 592a40c4f10SYehuda Sadeh __register_request(osdc, req); 59377f38e0eSSage Weil list_add(&req->r_req_lru_item, &osdc->req_unsent); 59477f38e0eSSage Weil list_add(&req->r_osd_item, &req->r_osd->o_requests); 59577f38e0eSSage Weil __unregister_linger_request(osdc, req); 596a40c4f10SYehuda Sadeh dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, 597a40c4f10SYehuda Sadeh osd->o_osd); 598a40c4f10SYehuda Sadeh } 5996f6c7006SSage Weil } 6006f6c7006SSage Weil 6013d14c5d2SYehuda Sadeh /* 6023d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 6033d14c5d2SYehuda Sadeh */ 6043d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 6053d14c5d2SYehuda Sadeh { 6063d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 6073d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 6083d14c5d2SYehuda Sadeh 6093d14c5d2SYehuda Sadeh if (!osd) 6103d14c5d2SYehuda Sadeh return; 6113d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 6123d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 6133d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 61483aff95eSSage Weil mutex_lock(&osdc->request_mutex); 61583aff95eSSage Weil __kick_osd_requests(osdc, osd); 616f9d25199SAlex Elder __send_queued(osdc); 61783aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 6183d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 6193d14c5d2SYehuda Sadeh } 6203d14c5d2SYehuda Sadeh 6213d14c5d2SYehuda Sadeh /* 6223d14c5d2SYehuda Sadeh * Track open sessions with osds. 6233d14c5d2SYehuda Sadeh */ 624e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 6253d14c5d2SYehuda Sadeh { 6263d14c5d2SYehuda Sadeh struct ceph_osd *osd; 6273d14c5d2SYehuda Sadeh 6283d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 6293d14c5d2SYehuda Sadeh if (!osd) 6303d14c5d2SYehuda Sadeh return NULL; 6313d14c5d2SYehuda Sadeh 6323d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 6333d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 634e10006f8SAlex Elder osd->o_osd = onum; 635f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 6363d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 637a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 6383d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 6393d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 6403d14c5d2SYehuda Sadeh 641b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 6423d14c5d2SYehuda Sadeh 6433d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 6443d14c5d2SYehuda Sadeh return osd; 6453d14c5d2SYehuda Sadeh } 6463d14c5d2SYehuda Sadeh 6473d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 6483d14c5d2SYehuda Sadeh { 6493d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 6503d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 6513d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 6523d14c5d2SYehuda Sadeh return osd; 6533d14c5d2SYehuda Sadeh } else { 6543d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 6553d14c5d2SYehuda Sadeh return NULL; 6563d14c5d2SYehuda Sadeh } 6573d14c5d2SYehuda Sadeh } 6583d14c5d2SYehuda Sadeh 6593d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 6603d14c5d2SYehuda Sadeh { 6613d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 6623d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 663a255651dSAlex Elder if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { 6643d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 6653d14c5d2SYehuda Sadeh 666a255651dSAlex Elder if (ac->ops && ac->ops->destroy_authorizer) 6676c4a1915SAlex Elder ac->ops->destroy_authorizer(ac, osd->o_auth.authorizer); 6683d14c5d2SYehuda Sadeh kfree(osd); 6693d14c5d2SYehuda Sadeh } 6703d14c5d2SYehuda Sadeh } 6713d14c5d2SYehuda Sadeh 6723d14c5d2SYehuda Sadeh /* 6733d14c5d2SYehuda Sadeh * remove an osd from our map 6743d14c5d2SYehuda Sadeh */ 6753d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 6763d14c5d2SYehuda Sadeh { 6773d14c5d2SYehuda Sadeh dout("__remove_osd %p\n", osd); 6783d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_requests)); 6793d14c5d2SYehuda Sadeh rb_erase(&osd->o_node, &osdc->osds); 6803d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 6813d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 6823d14c5d2SYehuda Sadeh put_osd(osd); 6833d14c5d2SYehuda Sadeh } 6843d14c5d2SYehuda Sadeh 685aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 686aca420bcSSage Weil { 687048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 688aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 689aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 690aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 691aca420bcSSage Weil struct ceph_osd, o_node); 692aca420bcSSage Weil __remove_osd(osdc, osd); 693aca420bcSSage Weil } 694aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 695aca420bcSSage Weil } 696aca420bcSSage Weil 6973d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 6983d14c5d2SYehuda Sadeh struct ceph_osd *osd) 6993d14c5d2SYehuda Sadeh { 7003d14c5d2SYehuda Sadeh dout("__move_osd_to_lru %p\n", osd); 7013d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 7023d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 7033d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 7043d14c5d2SYehuda Sadeh } 7053d14c5d2SYehuda Sadeh 7063d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 7073d14c5d2SYehuda Sadeh { 7083d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 7093d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 7103d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 7113d14c5d2SYehuda Sadeh } 7123d14c5d2SYehuda Sadeh 713aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 7143d14c5d2SYehuda Sadeh { 7153d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 7163d14c5d2SYehuda Sadeh 7173d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 7183d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 7193d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 720aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 7213d14c5d2SYehuda Sadeh break; 7223d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 7233d14c5d2SYehuda Sadeh } 7243d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 7253d14c5d2SYehuda Sadeh } 7263d14c5d2SYehuda Sadeh 7273d14c5d2SYehuda Sadeh /* 7283d14c5d2SYehuda Sadeh * reset osd connect 7293d14c5d2SYehuda Sadeh */ 7303d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 7313d14c5d2SYehuda Sadeh { 732c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 7333d14c5d2SYehuda Sadeh 7343d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 735a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 736a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 7373d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 738c3acb181SAlex Elder 739c3acb181SAlex Elder return -ENODEV; 740c3acb181SAlex Elder } 741c3acb181SAlex Elder 742c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 743c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 7443d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 745c3acb181SAlex Elder struct ceph_osd_request *req; 746c3acb181SAlex Elder 7473d14c5d2SYehuda Sadeh dout(" osd addr hasn't changed and connection never opened," 7483d14c5d2SYehuda Sadeh " letting msgr retry"); 7493d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 7503d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 7513d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 752c3acb181SAlex Elder 753c3acb181SAlex Elder return -EAGAIN; 7543d14c5d2SYehuda Sadeh } 755c3acb181SAlex Elder 756c3acb181SAlex Elder ceph_con_close(&osd->o_con); 757c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 758c3acb181SAlex Elder osd->o_incarnation++; 759c3acb181SAlex Elder 760c3acb181SAlex Elder return 0; 7613d14c5d2SYehuda Sadeh } 7623d14c5d2SYehuda Sadeh 7633d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 7643d14c5d2SYehuda Sadeh { 7653d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 7663d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 7673d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 7683d14c5d2SYehuda Sadeh 769aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 7703d14c5d2SYehuda Sadeh while (*p) { 7713d14c5d2SYehuda Sadeh parent = *p; 7723d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 7733d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 7743d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 7753d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 7763d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 7773d14c5d2SYehuda Sadeh else 7783d14c5d2SYehuda Sadeh BUG(); 7793d14c5d2SYehuda Sadeh } 7803d14c5d2SYehuda Sadeh 7813d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 7823d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 7833d14c5d2SYehuda Sadeh } 7843d14c5d2SYehuda Sadeh 7853d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 7863d14c5d2SYehuda Sadeh { 7873d14c5d2SYehuda Sadeh struct ceph_osd *osd; 7883d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 7893d14c5d2SYehuda Sadeh 7903d14c5d2SYehuda Sadeh while (n) { 7913d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 7923d14c5d2SYehuda Sadeh if (o < osd->o_osd) 7933d14c5d2SYehuda Sadeh n = n->rb_left; 7943d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 7953d14c5d2SYehuda Sadeh n = n->rb_right; 7963d14c5d2SYehuda Sadeh else 7973d14c5d2SYehuda Sadeh return osd; 7983d14c5d2SYehuda Sadeh } 7993d14c5d2SYehuda Sadeh return NULL; 8003d14c5d2SYehuda Sadeh } 8013d14c5d2SYehuda Sadeh 8023d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 8033d14c5d2SYehuda Sadeh { 8043d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 8053d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 8063d14c5d2SYehuda Sadeh } 8073d14c5d2SYehuda Sadeh 8083d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 8093d14c5d2SYehuda Sadeh { 8103d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 8113d14c5d2SYehuda Sadeh } 8123d14c5d2SYehuda Sadeh 8133d14c5d2SYehuda Sadeh /* 8143d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 8153d14c5d2SYehuda Sadeh * the timeout event. 8163d14c5d2SYehuda Sadeh */ 817a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 8183d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 8193d14c5d2SYehuda Sadeh { 8203d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 8213d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 82277f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 8233d14c5d2SYehuda Sadeh __insert_request(osdc, req); 8243d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 8253d14c5d2SYehuda Sadeh osdc->num_requests++; 8263d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 8273d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 8283d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 8293d14c5d2SYehuda Sadeh } 830a40c4f10SYehuda Sadeh } 831a40c4f10SYehuda Sadeh 832a40c4f10SYehuda Sadeh static void register_request(struct ceph_osd_client *osdc, 833a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 834a40c4f10SYehuda Sadeh { 835a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 836a40c4f10SYehuda Sadeh __register_request(osdc, req); 8373d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 8383d14c5d2SYehuda Sadeh } 8393d14c5d2SYehuda Sadeh 8403d14c5d2SYehuda Sadeh /* 8413d14c5d2SYehuda Sadeh * called under osdc->request_mutex 8423d14c5d2SYehuda Sadeh */ 8433d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 8443d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 8453d14c5d2SYehuda Sadeh { 84635f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 84735f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 84835f9f8a0SSage Weil req, req->r_tid); 84935f9f8a0SSage Weil return; 85035f9f8a0SSage Weil } 85135f9f8a0SSage Weil 8523d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 8533d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 8543d14c5d2SYehuda Sadeh osdc->num_requests--; 8553d14c5d2SYehuda Sadeh 8563d14c5d2SYehuda Sadeh if (req->r_osd) { 8573d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 8586740a845SAlex Elder ceph_msg_revoke(req->r_request); 8593d14c5d2SYehuda Sadeh 8603d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 861a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 862a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 863a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 8643d14c5d2SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 865a40c4f10SYehuda Sadeh } 866fbdb9190SSage Weil if (list_empty(&req->r_linger_item)) 8673d14c5d2SYehuda Sadeh req->r_osd = NULL; 8683d14c5d2SYehuda Sadeh } 8693d14c5d2SYehuda Sadeh 8707d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 8713d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 8723d14c5d2SYehuda Sadeh 8733d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 8743d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 8753d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 8763d14c5d2SYehuda Sadeh } 8773d14c5d2SYehuda Sadeh } 8783d14c5d2SYehuda Sadeh 8793d14c5d2SYehuda Sadeh /* 8803d14c5d2SYehuda Sadeh * Cancel a previously queued request message 8813d14c5d2SYehuda Sadeh */ 8823d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 8833d14c5d2SYehuda Sadeh { 8843d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 8856740a845SAlex Elder ceph_msg_revoke(req->r_request); 8863d14c5d2SYehuda Sadeh req->r_sent = 0; 8873d14c5d2SYehuda Sadeh } 8883d14c5d2SYehuda Sadeh } 8893d14c5d2SYehuda Sadeh 890a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 891a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 892a40c4f10SYehuda Sadeh { 893a40c4f10SYehuda Sadeh dout("__register_linger_request %p\n", req); 894a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 8956194ea89SSage Weil if (req->r_osd) 8966194ea89SSage Weil list_add_tail(&req->r_linger_osd, 8976194ea89SSage Weil &req->r_osd->o_linger_requests); 898a40c4f10SYehuda Sadeh } 899a40c4f10SYehuda Sadeh 900a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 901a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 902a40c4f10SYehuda Sadeh { 903a40c4f10SYehuda Sadeh dout("__unregister_linger_request %p\n", req); 904a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 90561c74035SAlex Elder if (req->r_osd) { 906a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_osd); 907a40c4f10SYehuda Sadeh 908a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 909a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 910a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 911a40c4f10SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 912a40c4f10SYehuda Sadeh } 913fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 914a40c4f10SYehuda Sadeh req->r_osd = NULL; 915a40c4f10SYehuda Sadeh } 916a40c4f10SYehuda Sadeh } 917a40c4f10SYehuda Sadeh 918a40c4f10SYehuda Sadeh void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, 919a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 920a40c4f10SYehuda Sadeh { 921a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 922a40c4f10SYehuda Sadeh if (req->r_linger) { 923a40c4f10SYehuda Sadeh __unregister_linger_request(osdc, req); 924a40c4f10SYehuda Sadeh ceph_osdc_put_request(req); 925a40c4f10SYehuda Sadeh } 926a40c4f10SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 927a40c4f10SYehuda Sadeh } 928a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); 929a40c4f10SYehuda Sadeh 930a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 931a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 932a40c4f10SYehuda Sadeh { 933a40c4f10SYehuda Sadeh if (!req->r_linger) { 934a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 935a40c4f10SYehuda Sadeh req->r_linger = 1; 936a40c4f10SYehuda Sadeh /* 937a40c4f10SYehuda Sadeh * caller is now responsible for calling 938a40c4f10SYehuda Sadeh * unregister_linger_request 939a40c4f10SYehuda Sadeh */ 940a40c4f10SYehuda Sadeh ceph_osdc_get_request(req); 941a40c4f10SYehuda Sadeh } 942a40c4f10SYehuda Sadeh } 943a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 944a40c4f10SYehuda Sadeh 9453d14c5d2SYehuda Sadeh /* 9463d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 9473d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 94825985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 9496f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 9503d14c5d2SYehuda Sadeh * 9513d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 9523d14c5d2SYehuda Sadeh * 9533d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 9543d14c5d2SYehuda Sadeh */ 9556f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 95638d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 9573d14c5d2SYehuda Sadeh { 9585b191d99SSage Weil struct ceph_pg pgid; 9593d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 9603d14c5d2SYehuda Sadeh int o = -1, num = 0; 9613d14c5d2SYehuda Sadeh int err; 9623d14c5d2SYehuda Sadeh 9636f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 96441766f87SAlex Elder err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap, 96541766f87SAlex Elder ceph_file_layout_pg_pool(req->r_file_layout)); 9666f6c7006SSage Weil if (err) { 9676f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 9683d14c5d2SYehuda Sadeh return err; 9696f6c7006SSage Weil } 9703d14c5d2SYehuda Sadeh req->r_pgid = pgid; 9713d14c5d2SYehuda Sadeh 9723d14c5d2SYehuda Sadeh err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); 9733d14c5d2SYehuda Sadeh if (err > 0) { 9743d14c5d2SYehuda Sadeh o = acting[0]; 9753d14c5d2SYehuda Sadeh num = err; 9763d14c5d2SYehuda Sadeh } 9773d14c5d2SYehuda Sadeh 97838d6453cSSage Weil if ((!force_resend && 97938d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 9803d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 9813d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 9823d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 9833d14c5d2SYehuda Sadeh (req->r_osd == NULL && o == -1)) 9843d14c5d2SYehuda Sadeh return 0; /* no change */ 9853d14c5d2SYehuda Sadeh 9865b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 9875b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 9883d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 9893d14c5d2SYehuda Sadeh 9903d14c5d2SYehuda Sadeh /* record full pg acting set */ 9913d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 9923d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 9933d14c5d2SYehuda Sadeh 9943d14c5d2SYehuda Sadeh if (req->r_osd) { 9953d14c5d2SYehuda Sadeh __cancel_request(req); 9963d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 9973d14c5d2SYehuda Sadeh req->r_osd = NULL; 9983d14c5d2SYehuda Sadeh } 9993d14c5d2SYehuda Sadeh 10003d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 10013d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 10023d14c5d2SYehuda Sadeh err = -ENOMEM; 1003e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 10046f6c7006SSage Weil if (!req->r_osd) { 10056f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 10063d14c5d2SYehuda Sadeh goto out; 10076f6c7006SSage Weil } 10083d14c5d2SYehuda Sadeh 10096f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 10103d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 10113d14c5d2SYehuda Sadeh 1012b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1013b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1014b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 10153d14c5d2SYehuda Sadeh } 10163d14c5d2SYehuda Sadeh 10173d14c5d2SYehuda Sadeh if (req->r_osd) { 10183d14c5d2SYehuda Sadeh __remove_osd_from_lru(req->r_osd); 10193d14c5d2SYehuda Sadeh list_add(&req->r_osd_item, &req->r_osd->o_requests); 10206f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_unsent); 10216f6c7006SSage Weil } else { 10226f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 10233d14c5d2SYehuda Sadeh } 10243d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 10253d14c5d2SYehuda Sadeh 10263d14c5d2SYehuda Sadeh out: 10273d14c5d2SYehuda Sadeh return err; 10283d14c5d2SYehuda Sadeh } 10293d14c5d2SYehuda Sadeh 10303d14c5d2SYehuda Sadeh /* 10313d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 10323d14c5d2SYehuda Sadeh */ 103356e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 10343d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 10353d14c5d2SYehuda Sadeh { 10361b83bef2SSage Weil void *p; 10373d14c5d2SYehuda Sadeh 10381b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 10391b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 10401b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 10413d14c5d2SYehuda Sadeh 10421b83bef2SSage Weil /* fill in message content that changes each time we send it */ 10431b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 10441b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 10451b83bef2SSage Weil put_unaligned_le64(req->r_pgid.pool, req->r_request_pool); 10461b83bef2SSage Weil p = req->r_request_pgid; 10471b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 10481b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 10491b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 10501b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 10511b83bef2SSage Weil sizeof(req->r_reassert_version)); 10522169aea6SSage Weil 10533d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 10543d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 10553d14c5d2SYehuda Sadeh 10563d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 10573d14c5d2SYehuda Sadeh ceph_con_send(&req->r_osd->o_con, req->r_request); 10583d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 10593d14c5d2SYehuda Sadeh } 10603d14c5d2SYehuda Sadeh 10613d14c5d2SYehuda Sadeh /* 10626f6c7006SSage Weil * Send any requests in the queue (req_unsent). 10636f6c7006SSage Weil */ 1064f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 10656f6c7006SSage Weil { 10666f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 10676f6c7006SSage Weil 1068f9d25199SAlex Elder dout("__send_queued\n"); 1069f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 10706f6c7006SSage Weil __send_request(osdc, req); 10716f6c7006SSage Weil } 10726f6c7006SSage Weil 10736f6c7006SSage Weil /* 10743d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 10753d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 10763d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 10773d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 10783d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 10793d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 10803d14c5d2SYehuda Sadeh * there are no open requests). 10813d14c5d2SYehuda Sadeh */ 10823d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 10833d14c5d2SYehuda Sadeh { 10843d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 10853d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 108683aff95eSSage Weil struct ceph_osd_request *req; 10873d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10883d14c5d2SYehuda Sadeh unsigned long keepalive = 10893d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 10903d14c5d2SYehuda Sadeh struct list_head slow_osds; 10913d14c5d2SYehuda Sadeh dout("timeout\n"); 10923d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 10933d14c5d2SYehuda Sadeh 10943d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 10953d14c5d2SYehuda Sadeh 10963d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 10973d14c5d2SYehuda Sadeh 10983d14c5d2SYehuda Sadeh /* 10993d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 11003d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 11013d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 11023d14c5d2SYehuda Sadeh */ 11033d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 11043d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 11053d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 11063d14c5d2SYehuda Sadeh break; 11073d14c5d2SYehuda Sadeh 11083d14c5d2SYehuda Sadeh osd = req->r_osd; 11093d14c5d2SYehuda Sadeh BUG_ON(!osd); 11103d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 11113d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 11123d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 11133d14c5d2SYehuda Sadeh } 11143d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 11153d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 11163d14c5d2SYehuda Sadeh o_keepalive_item); 11173d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 11183d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 11193d14c5d2SYehuda Sadeh } 11203d14c5d2SYehuda Sadeh 11213d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1122f9d25199SAlex Elder __send_queued(osdc); 11233d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 11243d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 11253d14c5d2SYehuda Sadeh } 11263d14c5d2SYehuda Sadeh 11273d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 11283d14c5d2SYehuda Sadeh { 11293d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 11303d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 11313d14c5d2SYehuda Sadeh osds_timeout_work.work); 11323d14c5d2SYehuda Sadeh unsigned long delay = 11333d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 11343d14c5d2SYehuda Sadeh 11353d14c5d2SYehuda Sadeh dout("osds timeout\n"); 11363d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1137aca420bcSSage Weil remove_old_osds(osdc); 11383d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 11393d14c5d2SYehuda Sadeh 11403d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 11413d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 11423d14c5d2SYehuda Sadeh } 11433d14c5d2SYehuda Sadeh 114425845472SSage Weil static void complete_request(struct ceph_osd_request *req) 114525845472SSage Weil { 114625845472SSage Weil if (req->r_safe_callback) 114725845472SSage Weil req->r_safe_callback(req, NULL); 114825845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 114925845472SSage Weil } 115025845472SSage Weil 11511b83bef2SSage Weil static int __decode_pgid(void **p, void *end, struct ceph_pg *pgid) 11521b83bef2SSage Weil { 11531b83bef2SSage Weil __u8 v; 11541b83bef2SSage Weil 11551b83bef2SSage Weil ceph_decode_need(p, end, 1 + 8 + 4 + 4, bad); 11561b83bef2SSage Weil v = ceph_decode_8(p); 11571b83bef2SSage Weil if (v > 1) { 11581b83bef2SSage Weil pr_warning("do not understand pg encoding %d > 1", v); 11591b83bef2SSage Weil return -EINVAL; 11601b83bef2SSage Weil } 11611b83bef2SSage Weil pgid->pool = ceph_decode_64(p); 11621b83bef2SSage Weil pgid->seed = ceph_decode_32(p); 11631b83bef2SSage Weil *p += 4; 11641b83bef2SSage Weil return 0; 11651b83bef2SSage Weil 11661b83bef2SSage Weil bad: 11671b83bef2SSage Weil pr_warning("incomplete pg encoding"); 11681b83bef2SSage Weil return -EINVAL; 11691b83bef2SSage Weil } 11701b83bef2SSage Weil 11713d14c5d2SYehuda Sadeh /* 11723d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 11733d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 11743d14c5d2SYehuda Sadeh */ 11753d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 11763d14c5d2SYehuda Sadeh struct ceph_connection *con) 11773d14c5d2SYehuda Sadeh { 11781b83bef2SSage Weil void *p, *end; 11793d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 11803d14c5d2SYehuda Sadeh u64 tid; 11811b83bef2SSage Weil int object_len; 11821b83bef2SSage Weil int numops, payload_len, flags; 11833d14c5d2SYehuda Sadeh s32 result; 11841b83bef2SSage Weil s32 retry_attempt; 11851b83bef2SSage Weil struct ceph_pg pg; 11861b83bef2SSage Weil int err; 11871b83bef2SSage Weil u32 reassert_epoch; 11881b83bef2SSage Weil u64 reassert_version; 11891b83bef2SSage Weil u32 osdmap_epoch; 11900d5af164SAlex Elder int already_completed; 11911b83bef2SSage Weil int i; 11923d14c5d2SYehuda Sadeh 11933d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 11941b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 11951b83bef2SSage Weil 11961b83bef2SSage Weil p = msg->front.iov_base; 11971b83bef2SSage Weil end = p + msg->front.iov_len; 11981b83bef2SSage Weil 11991b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 12001b83bef2SSage Weil object_len = ceph_decode_32(&p); 12011b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 12021b83bef2SSage Weil p += object_len; 12031b83bef2SSage Weil 12041b83bef2SSage Weil err = __decode_pgid(&p, end, &pg); 12051b83bef2SSage Weil if (err) 12063d14c5d2SYehuda Sadeh goto bad; 12071b83bef2SSage Weil 12081b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 12091b83bef2SSage Weil flags = ceph_decode_64(&p); 12101b83bef2SSage Weil result = ceph_decode_32(&p); 12111b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 12121b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 12131b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 12141b83bef2SSage Weil 12153d14c5d2SYehuda Sadeh /* lookup */ 12163d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 12173d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 12183d14c5d2SYehuda Sadeh if (req == NULL) { 12193d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 12203d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 12213d14c5d2SYehuda Sadeh return; 12223d14c5d2SYehuda Sadeh } 12233d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 12241b83bef2SSage Weil 12251b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 12261b83bef2SSage Weil req, result); 12271b83bef2SSage Weil 12281b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 12291b83bef2SSage Weil numops = ceph_decode_32(&p); 12301b83bef2SSage Weil if (numops > CEPH_OSD_MAX_OP) 12311b83bef2SSage Weil goto bad_put; 12321b83bef2SSage Weil if (numops != req->r_num_ops) 12331b83bef2SSage Weil goto bad_put; 12341b83bef2SSage Weil payload_len = 0; 12351b83bef2SSage Weil ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad); 12361b83bef2SSage Weil for (i = 0; i < numops; i++) { 12371b83bef2SSage Weil struct ceph_osd_op *op = p; 12381b83bef2SSage Weil int len; 12391b83bef2SSage Weil 12401b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 12411b83bef2SSage Weil req->r_reply_op_len[i] = len; 12421b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 12431b83bef2SSage Weil payload_len += len; 12441b83bef2SSage Weil p += sizeof(*op); 12451b83bef2SSage Weil } 12461b83bef2SSage Weil if (payload_len != le32_to_cpu(msg->hdr.data_len)) { 12471b83bef2SSage Weil pr_warning("sum of op payload lens %d != data_len %d", 12481b83bef2SSage Weil payload_len, le32_to_cpu(msg->hdr.data_len)); 12491b83bef2SSage Weil goto bad_put; 12501b83bef2SSage Weil } 12511b83bef2SSage Weil 12521b83bef2SSage Weil ceph_decode_need(&p, end, 4 + numops * 4, bad); 12531b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 12541b83bef2SSage Weil for (i = 0; i < numops; i++) 12551b83bef2SSage Weil req->r_reply_op_result[i] = ceph_decode_32(&p); 12563d14c5d2SYehuda Sadeh 12573d14c5d2SYehuda Sadeh /* 12583d14c5d2SYehuda Sadeh * if this connection filled our message, drop our reference now, to 12593d14c5d2SYehuda Sadeh * avoid a (safe but slower) revoke later. 12603d14c5d2SYehuda Sadeh */ 12613d14c5d2SYehuda Sadeh if (req->r_con_filling_msg == con && req->r_reply == msg) { 12623d14c5d2SYehuda Sadeh dout(" dropping con_filling_msg ref %p\n", con); 12633d14c5d2SYehuda Sadeh req->r_con_filling_msg = NULL; 12640d47766fSSage Weil con->ops->put(con); 12653d14c5d2SYehuda Sadeh } 12663d14c5d2SYehuda Sadeh 12673d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 126895c96174SEric Dumazet unsigned int bytes; 12693d14c5d2SYehuda Sadeh 12701b83bef2SSage Weil req->r_result = result; 12713d14c5d2SYehuda Sadeh bytes = le32_to_cpu(msg->hdr.data_len); 12723d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 12733d14c5d2SYehuda Sadeh bytes); 12743d14c5d2SYehuda Sadeh if (req->r_result == 0) 12753d14c5d2SYehuda Sadeh req->r_result = bytes; 12763d14c5d2SYehuda Sadeh 12773d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 12781b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 12791b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 12803d14c5d2SYehuda Sadeh 12813d14c5d2SYehuda Sadeh req->r_got_reply = 1; 12823d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 12833d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 12843d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 12853d14c5d2SYehuda Sadeh goto done; 12863d14c5d2SYehuda Sadeh } 12873d14c5d2SYehuda Sadeh 12883d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 12893d14c5d2SYehuda Sadeh 1290a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1291a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1292a40c4f10SYehuda Sadeh 12933d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 12943d14c5d2SYehuda Sadeh if (result < 0 || 12953d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 12963d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 12973d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 12983d14c5d2SYehuda Sadeh 12990d5af164SAlex Elder already_completed = req->r_completed; 13000d5af164SAlex Elder req->r_completed = 1; 13013d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 13020d5af164SAlex Elder if (already_completed) 13030d5af164SAlex Elder goto done; 13043d14c5d2SYehuda Sadeh 13053d14c5d2SYehuda Sadeh if (req->r_callback) 13063d14c5d2SYehuda Sadeh req->r_callback(req, msg); 13073d14c5d2SYehuda Sadeh else 13083d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 13093d14c5d2SYehuda Sadeh 131025845472SSage Weil if (flags & CEPH_OSD_FLAG_ONDISK) 131125845472SSage Weil complete_request(req); 13123d14c5d2SYehuda Sadeh 13133d14c5d2SYehuda Sadeh done: 1314a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 13153d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 13163d14c5d2SYehuda Sadeh return; 13173d14c5d2SYehuda Sadeh 13181b83bef2SSage Weil bad_put: 13191b83bef2SSage Weil ceph_osdc_put_request(req); 13203d14c5d2SYehuda Sadeh bad: 13211b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 13221b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 13233d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 13243d14c5d2SYehuda Sadeh } 13253d14c5d2SYehuda Sadeh 13266f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 13273d14c5d2SYehuda Sadeh { 13283d14c5d2SYehuda Sadeh struct rb_node *p, *n; 13293d14c5d2SYehuda Sadeh 13303d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 13316f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 13323d14c5d2SYehuda Sadeh 13333d14c5d2SYehuda Sadeh n = rb_next(p); 13343d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 13353d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 13363d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 13373d14c5d2SYehuda Sadeh osd->o_osd), 13383d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 13393d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 13403d14c5d2SYehuda Sadeh } 13413d14c5d2SYehuda Sadeh } 13423d14c5d2SYehuda Sadeh 13433d14c5d2SYehuda Sadeh /* 13446f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 13456f6c7006SSage Weil * no osd, request a new map. 13463d14c5d2SYehuda Sadeh * 1347e6d50f67SAlex Elder * Caller should hold map_sem for read. 13483d14c5d2SYehuda Sadeh */ 134938d6453cSSage Weil static void kick_requests(struct ceph_osd_client *osdc, int force_resend) 13503d14c5d2SYehuda Sadeh { 1351a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 13526f6c7006SSage Weil struct rb_node *p; 13536f6c7006SSage Weil int needmap = 0; 13546f6c7006SSage Weil int err; 13553d14c5d2SYehuda Sadeh 135638d6453cSSage Weil dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); 13573d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 13586194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 13596f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 13606194ea89SSage Weil p = rb_next(p); 1361ab60b16dSAlex Elder 1362ab60b16dSAlex Elder /* 1363ab60b16dSAlex Elder * For linger requests that have not yet been 1364ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1365ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1366ab60b16dSAlex Elder * the request before re-registering it as a linger 1367ab60b16dSAlex Elder * request to ensure the __map_request() below 1368ab60b16dSAlex Elder * will decide it needs to be sent. 1369ab60b16dSAlex Elder */ 1370ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1371ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1372ab60b16dSAlex Elder req, req->r_tid, 1373ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 1374ab60b16dSAlex Elder __unregister_request(osdc, req); 1375ab60b16dSAlex Elder __register_linger_request(osdc, req); 1376ab60b16dSAlex Elder continue; 1377ab60b16dSAlex Elder } 1378ab60b16dSAlex Elder 137938d6453cSSage Weil err = __map_request(osdc, req, force_resend); 13806f6c7006SSage Weil if (err < 0) 13816f6c7006SSage Weil continue; /* error */ 13826f6c7006SSage Weil if (req->r_osd == NULL) { 13836f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 13846f6c7006SSage Weil needmap++; /* request a newer map */ 13856f6c7006SSage Weil } else if (err > 0) { 13866194ea89SSage Weil if (!req->r_linger) { 13876194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 13886194ea89SSage Weil req->r_tid, 13896f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 13906f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 13916f6c7006SSage Weil } 13926f6c7006SSage Weil } 13936194ea89SSage Weil } 1394a40c4f10SYehuda Sadeh 1395a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 1396a40c4f10SYehuda Sadeh r_linger_item) { 1397a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 1398a40c4f10SYehuda Sadeh 139938d6453cSSage Weil err = __map_request(osdc, req, force_resend); 1400ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 1401a40c4f10SYehuda Sadeh if (err == 0) 1402a40c4f10SYehuda Sadeh continue; /* no change and no osd was specified */ 1403a40c4f10SYehuda Sadeh if (err < 0) 1404a40c4f10SYehuda Sadeh continue; /* hrm! */ 1405a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 1406a40c4f10SYehuda Sadeh dout("tid %llu maps to no valid osd\n", req->r_tid); 1407a40c4f10SYehuda Sadeh needmap++; /* request a newer map */ 1408a40c4f10SYehuda Sadeh continue; 1409a40c4f10SYehuda Sadeh } 1410a40c4f10SYehuda Sadeh 1411a40c4f10SYehuda Sadeh dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, 1412a40c4f10SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 1413a40c4f10SYehuda Sadeh __register_request(osdc, req); 1414c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 1415a40c4f10SYehuda Sadeh } 14163d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14173d14c5d2SYehuda Sadeh 14183d14c5d2SYehuda Sadeh if (needmap) { 14193d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 14203d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 14213d14c5d2SYehuda Sadeh } 1422e6d50f67SAlex Elder reset_changed_osds(osdc); 14233d14c5d2SYehuda Sadeh } 14246f6c7006SSage Weil 14256f6c7006SSage Weil 14263d14c5d2SYehuda Sadeh /* 14273d14c5d2SYehuda Sadeh * Process updated osd map. 14283d14c5d2SYehuda Sadeh * 14293d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 14303d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 14313d14c5d2SYehuda Sadeh * off to different OSDs as needed. 14323d14c5d2SYehuda Sadeh */ 14333d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 14343d14c5d2SYehuda Sadeh { 14353d14c5d2SYehuda Sadeh void *p, *end, *next; 14363d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 14373d14c5d2SYehuda Sadeh u32 epoch; 14383d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 14393d14c5d2SYehuda Sadeh int err; 14403d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 14413d14c5d2SYehuda Sadeh 14423d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 14433d14c5d2SYehuda Sadeh p = msg->front.iov_base; 14443d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 14453d14c5d2SYehuda Sadeh 14463d14c5d2SYehuda Sadeh /* verify fsid */ 14473d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 14483d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 14493d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 14503d14c5d2SYehuda Sadeh return; 14513d14c5d2SYehuda Sadeh 14523d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 14533d14c5d2SYehuda Sadeh 14543d14c5d2SYehuda Sadeh /* incremental maps */ 14553d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 14563d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 14573d14c5d2SYehuda Sadeh while (nr_maps > 0) { 14583d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 14593d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 14603d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 14613d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 14623d14c5d2SYehuda Sadeh next = p + maplen; 14633d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 14643d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 14653d14c5d2SYehuda Sadeh epoch, maplen); 14663d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 14673d14c5d2SYehuda Sadeh osdc->osdmap, 146815d9882cSAlex Elder &osdc->client->msgr); 14693d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 14703d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 14713d14c5d2SYehuda Sadeh goto bad; 14723d14c5d2SYehuda Sadeh } 14733d14c5d2SYehuda Sadeh BUG_ON(!newmap); 14743d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 14753d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 14763d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 14773d14c5d2SYehuda Sadeh } 147838d6453cSSage Weil kick_requests(osdc, 0); 14793d14c5d2SYehuda Sadeh } else { 14803d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 14813d14c5d2SYehuda Sadeh epoch, maplen); 14823d14c5d2SYehuda Sadeh } 14833d14c5d2SYehuda Sadeh p = next; 14843d14c5d2SYehuda Sadeh nr_maps--; 14853d14c5d2SYehuda Sadeh } 14863d14c5d2SYehuda Sadeh if (newmap) 14873d14c5d2SYehuda Sadeh goto done; 14883d14c5d2SYehuda Sadeh 14893d14c5d2SYehuda Sadeh /* full maps */ 14903d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 14913d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 14923d14c5d2SYehuda Sadeh while (nr_maps) { 14933d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 14943d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 14953d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 14963d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 14973d14c5d2SYehuda Sadeh if (nr_maps > 1) { 14983d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 14993d14c5d2SYehuda Sadeh epoch, maplen); 15003d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 15013d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 15023d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 15033d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 15043d14c5d2SYehuda Sadeh } else { 150538d6453cSSage Weil int skipped_map = 0; 150638d6453cSSage Weil 15073d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 15083d14c5d2SYehuda Sadeh newmap = osdmap_decode(&p, p+maplen); 15093d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 15103d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 15113d14c5d2SYehuda Sadeh goto bad; 15123d14c5d2SYehuda Sadeh } 15133d14c5d2SYehuda Sadeh BUG_ON(!newmap); 15143d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 15153d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 151638d6453cSSage Weil if (oldmap) { 151738d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 151838d6453cSSage Weil skipped_map = 1; 15193d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 152038d6453cSSage Weil } 152138d6453cSSage Weil kick_requests(osdc, skipped_map); 15223d14c5d2SYehuda Sadeh } 15233d14c5d2SYehuda Sadeh p += maplen; 15243d14c5d2SYehuda Sadeh nr_maps--; 15253d14c5d2SYehuda Sadeh } 15263d14c5d2SYehuda Sadeh 15273d14c5d2SYehuda Sadeh done: 15283d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 15293d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 1530cd634fb6SSage Weil 1531cd634fb6SSage Weil /* 1532cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 1533cd634fb6SSage Weil * we find out when we are no longer full and stop returning 1534cd634fb6SSage Weil * ENOSPC. 1535cd634fb6SSage Weil */ 1536cd634fb6SSage Weil if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) 1537cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 1538cd634fb6SSage Weil 1539f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 1540f9d25199SAlex Elder __send_queued(osdc); 1541f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 15423d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 15433d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 15443d14c5d2SYehuda Sadeh return; 15453d14c5d2SYehuda Sadeh 15463d14c5d2SYehuda Sadeh bad: 15473d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 15483d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 15493d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 15503d14c5d2SYehuda Sadeh return; 15513d14c5d2SYehuda Sadeh } 15523d14c5d2SYehuda Sadeh 15533d14c5d2SYehuda Sadeh /* 1554a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 1555a40c4f10SYehuda Sadeh * 1556a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 1557a40c4f10SYehuda Sadeh */ 1558a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 1559a40c4f10SYehuda Sadeh { 1560a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 1561a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 1562a40c4f10SYehuda Sadeh 1563a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 1564a40c4f10SYehuda Sadeh kfree(event); 1565a40c4f10SYehuda Sadeh } 1566a40c4f10SYehuda Sadeh 1567a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 1568a40c4f10SYehuda Sadeh { 1569a40c4f10SYehuda Sadeh kref_get(&event->kref); 1570a40c4f10SYehuda Sadeh } 1571a40c4f10SYehuda Sadeh 1572a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 1573a40c4f10SYehuda Sadeh { 1574a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 1575a40c4f10SYehuda Sadeh } 1576a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 1577a40c4f10SYehuda Sadeh 1578a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 1579a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 1580a40c4f10SYehuda Sadeh { 1581a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1582a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1583a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1584a40c4f10SYehuda Sadeh 1585a40c4f10SYehuda Sadeh while (*p) { 1586a40c4f10SYehuda Sadeh parent = *p; 1587a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1588a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 1589a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1590a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 1591a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1592a40c4f10SYehuda Sadeh else 1593a40c4f10SYehuda Sadeh BUG(); 1594a40c4f10SYehuda Sadeh } 1595a40c4f10SYehuda Sadeh 1596a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 1597a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 1598a40c4f10SYehuda Sadeh } 1599a40c4f10SYehuda Sadeh 1600a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 1601a40c4f10SYehuda Sadeh u64 cookie) 1602a40c4f10SYehuda Sadeh { 1603a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1604a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1605a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1606a40c4f10SYehuda Sadeh 1607a40c4f10SYehuda Sadeh while (*p) { 1608a40c4f10SYehuda Sadeh parent = *p; 1609a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1610a40c4f10SYehuda Sadeh if (cookie < event->cookie) 1611a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1612a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 1613a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1614a40c4f10SYehuda Sadeh else 1615a40c4f10SYehuda Sadeh return event; 1616a40c4f10SYehuda Sadeh } 1617a40c4f10SYehuda Sadeh return NULL; 1618a40c4f10SYehuda Sadeh } 1619a40c4f10SYehuda Sadeh 1620a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 1621a40c4f10SYehuda Sadeh { 1622a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1623a40c4f10SYehuda Sadeh 1624a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 1625a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 1626a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 1627a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1628a40c4f10SYehuda Sadeh } else { 1629a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 1630a40c4f10SYehuda Sadeh } 1631a40c4f10SYehuda Sadeh } 1632a40c4f10SYehuda Sadeh 1633a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 1634a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 16353c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 1636a40c4f10SYehuda Sadeh { 1637a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1638a40c4f10SYehuda Sadeh 1639a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 1640a40c4f10SYehuda Sadeh if (!event) 1641a40c4f10SYehuda Sadeh return -ENOMEM; 1642a40c4f10SYehuda Sadeh 1643a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 1644a40c4f10SYehuda Sadeh event->cb = event_cb; 16453c663bbdSAlex Elder event->one_shot = 0; 1646a40c4f10SYehuda Sadeh event->data = data; 1647a40c4f10SYehuda Sadeh event->osdc = osdc; 1648a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 16493ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 1650a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 1651a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 1652a40c4f10SYehuda Sadeh 1653a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1654a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 1655a40c4f10SYehuda Sadeh __insert_event(osdc, event); 1656a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1657a40c4f10SYehuda Sadeh 1658a40c4f10SYehuda Sadeh *pevent = event; 1659a40c4f10SYehuda Sadeh return 0; 1660a40c4f10SYehuda Sadeh } 1661a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 1662a40c4f10SYehuda Sadeh 1663a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 1664a40c4f10SYehuda Sadeh { 1665a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1666a40c4f10SYehuda Sadeh 1667a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 1668a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1669a40c4f10SYehuda Sadeh __remove_event(event); 1670a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1671a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 1672a40c4f10SYehuda Sadeh } 1673a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 1674a40c4f10SYehuda Sadeh 1675a40c4f10SYehuda Sadeh 1676a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 1677a40c4f10SYehuda Sadeh { 1678a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 1679a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 1680a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 1681a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 1682a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 1683a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 1684a40c4f10SYehuda Sadeh 1685a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 1686a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 1687a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 1688a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1689a40c4f10SYehuda Sadeh kfree(event_work); 1690a40c4f10SYehuda Sadeh } 1691a40c4f10SYehuda Sadeh 1692a40c4f10SYehuda Sadeh 1693a40c4f10SYehuda Sadeh /* 1694a40c4f10SYehuda Sadeh * Process osd watch notifications 1695a40c4f10SYehuda Sadeh */ 16963c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 16973c663bbdSAlex Elder struct ceph_msg *msg) 1698a40c4f10SYehuda Sadeh { 1699a40c4f10SYehuda Sadeh void *p, *end; 1700a40c4f10SYehuda Sadeh u8 proto_ver; 1701a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 1702a40c4f10SYehuda Sadeh u8 opcode; 1703a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1704a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 1705a40c4f10SYehuda Sadeh 1706a40c4f10SYehuda Sadeh p = msg->front.iov_base; 1707a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 1708a40c4f10SYehuda Sadeh 1709a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 1710a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 1711a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 1712a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 1713a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 1714a40c4f10SYehuda Sadeh 1715a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1716a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 1717a40c4f10SYehuda Sadeh if (event) { 17183c663bbdSAlex Elder BUG_ON(event->one_shot); 1719a40c4f10SYehuda Sadeh get_event(event); 1720a40c4f10SYehuda Sadeh } 1721a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1722a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 1723a40c4f10SYehuda Sadeh cookie, ver, event); 1724a40c4f10SYehuda Sadeh if (event) { 1725a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 1726a40c4f10SYehuda Sadeh if (!event_work) { 1727a40c4f10SYehuda Sadeh dout("ERROR: could not allocate event_work\n"); 1728a40c4f10SYehuda Sadeh goto done_err; 1729a40c4f10SYehuda Sadeh } 17306b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 1731a40c4f10SYehuda Sadeh event_work->event = event; 1732a40c4f10SYehuda Sadeh event_work->ver = ver; 1733a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 1734a40c4f10SYehuda Sadeh event_work->opcode = opcode; 1735a40c4f10SYehuda Sadeh if (!queue_work(osdc->notify_wq, &event_work->work)) { 1736a40c4f10SYehuda Sadeh dout("WARNING: failed to queue notify event work\n"); 1737a40c4f10SYehuda Sadeh goto done_err; 1738a40c4f10SYehuda Sadeh } 1739a40c4f10SYehuda Sadeh } 1740a40c4f10SYehuda Sadeh 1741a40c4f10SYehuda Sadeh return; 1742a40c4f10SYehuda Sadeh 1743a40c4f10SYehuda Sadeh done_err: 1744a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1745a40c4f10SYehuda Sadeh return; 1746a40c4f10SYehuda Sadeh 1747a40c4f10SYehuda Sadeh bad: 1748a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 1749a40c4f10SYehuda Sadeh return; 1750a40c4f10SYehuda Sadeh } 1751a40c4f10SYehuda Sadeh 175270636773SAlex Elder static void ceph_osdc_msg_data_set(struct ceph_msg *msg, 175370636773SAlex Elder struct ceph_osd_data *osd_data) 175470636773SAlex Elder { 175570636773SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 175670636773SAlex Elder BUG_ON(osd_data->length > (u64) SIZE_MAX); 175770636773SAlex Elder if (osd_data->length) 175870636773SAlex Elder ceph_msg_data_set_pages(msg, osd_data->pages, 175970636773SAlex Elder osd_data->length, osd_data->alignment); 176070636773SAlex Elder #ifdef CONFIG_BLOCK 176170636773SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 176270636773SAlex Elder ceph_msg_data_set_bio(msg, osd_data->bio); 176370636773SAlex Elder #endif 176470636773SAlex Elder } else { 176570636773SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 176670636773SAlex Elder } 176770636773SAlex Elder } 176870636773SAlex Elder 1769a40c4f10SYehuda Sadeh /* 17703d14c5d2SYehuda Sadeh * Register request, send initial attempt. 17713d14c5d2SYehuda Sadeh */ 17723d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 17733d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 17743d14c5d2SYehuda Sadeh bool nofail) 17753d14c5d2SYehuda Sadeh { 17763d14c5d2SYehuda Sadeh int rc = 0; 17773d14c5d2SYehuda Sadeh 177870636773SAlex Elder /* Set up response incoming data and request outgoing data fields */ 17790fff87ecSAlex Elder 178070636773SAlex Elder ceph_osdc_msg_data_set(req->r_reply, &req->r_data_in); 178170636773SAlex Elder ceph_osdc_msg_data_set(req->r_request, &req->r_data_out); 1782ebf18f47SAlex Elder if (req->r_trail.length) 178327fa8385SAlex Elder ceph_msg_data_set_trail(req->r_request, &req->r_trail); 17843d14c5d2SYehuda Sadeh 17853d14c5d2SYehuda Sadeh register_request(osdc, req); 17863d14c5d2SYehuda Sadeh 17873d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 17883d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 17893d14c5d2SYehuda Sadeh /* 17903d14c5d2SYehuda Sadeh * a racing kick_requests() may have sent the message for us 17913d14c5d2SYehuda Sadeh * while we dropped request_mutex above, so only send now if 17923d14c5d2SYehuda Sadeh * the request still han't been touched yet. 17933d14c5d2SYehuda Sadeh */ 17943d14c5d2SYehuda Sadeh if (req->r_sent == 0) { 179538d6453cSSage Weil rc = __map_request(osdc, req, 0); 17969d6fcb08SSage Weil if (rc < 0) { 17979d6fcb08SSage Weil if (nofail) { 17989d6fcb08SSage Weil dout("osdc_start_request failed map, " 17999d6fcb08SSage Weil " will retry %lld\n", req->r_tid); 18009d6fcb08SSage Weil rc = 0; 18019d6fcb08SSage Weil } 1802234af26fSDan Carpenter goto out_unlock; 18039d6fcb08SSage Weil } 18046f6c7006SSage Weil if (req->r_osd == NULL) { 18056f6c7006SSage Weil dout("send_request %p no up osds in pg\n", req); 18066f6c7006SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 18076f6c7006SSage Weil } else { 180856e925b6SSage Weil __send_request(osdc, req); 180956e925b6SSage Weil } 18103d14c5d2SYehuda Sadeh rc = 0; 18116f6c7006SSage Weil } 1812234af26fSDan Carpenter 1813234af26fSDan Carpenter out_unlock: 18143d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 18153d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 18163d14c5d2SYehuda Sadeh return rc; 18173d14c5d2SYehuda Sadeh } 18183d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 18193d14c5d2SYehuda Sadeh 18203d14c5d2SYehuda Sadeh /* 18213d14c5d2SYehuda Sadeh * wait for a request to complete 18223d14c5d2SYehuda Sadeh */ 18233d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 18243d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 18253d14c5d2SYehuda Sadeh { 18263d14c5d2SYehuda Sadeh int rc; 18273d14c5d2SYehuda Sadeh 18283d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 18293d14c5d2SYehuda Sadeh if (rc < 0) { 18303d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 18313d14c5d2SYehuda Sadeh __cancel_request(req); 18323d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 18333d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 183425845472SSage Weil complete_request(req); 18353d14c5d2SYehuda Sadeh dout("wait_request tid %llu canceled/timed out\n", req->r_tid); 18363d14c5d2SYehuda Sadeh return rc; 18373d14c5d2SYehuda Sadeh } 18383d14c5d2SYehuda Sadeh 18393d14c5d2SYehuda Sadeh dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); 18403d14c5d2SYehuda Sadeh return req->r_result; 18413d14c5d2SYehuda Sadeh } 18423d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 18433d14c5d2SYehuda Sadeh 18443d14c5d2SYehuda Sadeh /* 18453d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 18463d14c5d2SYehuda Sadeh */ 18473d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 18483d14c5d2SYehuda Sadeh { 18493d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 18503d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 18513d14c5d2SYehuda Sadeh 18523d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 18533d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 18543d14c5d2SYehuda Sadeh while (1) { 18553d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 18563d14c5d2SYehuda Sadeh if (!req) 18573d14c5d2SYehuda Sadeh break; 18583d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 18593d14c5d2SYehuda Sadeh break; 18603d14c5d2SYehuda Sadeh 18613d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 18623d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 18633d14c5d2SYehuda Sadeh continue; 18643d14c5d2SYehuda Sadeh 18653d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 18663d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 18673d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 18683d14c5d2SYehuda Sadeh req->r_tid, last_tid); 18693d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 18703d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 18713d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 18723d14c5d2SYehuda Sadeh } 18733d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 18743d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 18753d14c5d2SYehuda Sadeh } 18763d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 18773d14c5d2SYehuda Sadeh 18783d14c5d2SYehuda Sadeh /* 18793d14c5d2SYehuda Sadeh * init, shutdown 18803d14c5d2SYehuda Sadeh */ 18813d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 18823d14c5d2SYehuda Sadeh { 18833d14c5d2SYehuda Sadeh int err; 18843d14c5d2SYehuda Sadeh 18853d14c5d2SYehuda Sadeh dout("init\n"); 18863d14c5d2SYehuda Sadeh osdc->client = client; 18873d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 18883d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 18893d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 18903d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 18913d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 18923d14c5d2SYehuda Sadeh osdc->last_tid = 0; 18933d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 18943d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 18953d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 18963d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 18976f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 18986f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 1899a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 19003d14c5d2SYehuda Sadeh osdc->num_requests = 0; 19013d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 19023d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 1903a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 1904a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 1905a40c4f10SYehuda Sadeh osdc->event_count = 0; 19063d14c5d2SYehuda Sadeh 19073d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 19083d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 19093d14c5d2SYehuda Sadeh 19103d14c5d2SYehuda Sadeh err = -ENOMEM; 19113d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 19123d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 19133d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 19143d14c5d2SYehuda Sadeh goto out; 19153d14c5d2SYehuda Sadeh 1916d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 1917d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 19183d14c5d2SYehuda Sadeh "osd_op"); 19193d14c5d2SYehuda Sadeh if (err < 0) 19203d14c5d2SYehuda Sadeh goto out_mempool; 1921d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 19223d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 19233d14c5d2SYehuda Sadeh "osd_op_reply"); 19243d14c5d2SYehuda Sadeh if (err < 0) 19253d14c5d2SYehuda Sadeh goto out_msgpool; 1926a40c4f10SYehuda Sadeh 1927a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 1928a40c4f10SYehuda Sadeh if (IS_ERR(osdc->notify_wq)) { 1929a40c4f10SYehuda Sadeh err = PTR_ERR(osdc->notify_wq); 1930a40c4f10SYehuda Sadeh osdc->notify_wq = NULL; 1931a40c4f10SYehuda Sadeh goto out_msgpool; 1932a40c4f10SYehuda Sadeh } 19333d14c5d2SYehuda Sadeh return 0; 19343d14c5d2SYehuda Sadeh 19353d14c5d2SYehuda Sadeh out_msgpool: 19363d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 19373d14c5d2SYehuda Sadeh out_mempool: 19383d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 19393d14c5d2SYehuda Sadeh out: 19403d14c5d2SYehuda Sadeh return err; 19413d14c5d2SYehuda Sadeh } 19423d14c5d2SYehuda Sadeh 19433d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 19443d14c5d2SYehuda Sadeh { 1945a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 1946a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 19473d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 19483d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 19493d14c5d2SYehuda Sadeh if (osdc->osdmap) { 19503d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 19513d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 19523d14c5d2SYehuda Sadeh } 1953aca420bcSSage Weil remove_all_osds(osdc); 19543d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 19553d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 19563d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 19573d14c5d2SYehuda Sadeh } 19583d14c5d2SYehuda Sadeh 19593d14c5d2SYehuda Sadeh /* 19603d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 19613d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 19623d14c5d2SYehuda Sadeh */ 19633d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 19643d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 19653d14c5d2SYehuda Sadeh u64 off, u64 *plen, 19663d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 1967b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 19683d14c5d2SYehuda Sadeh { 19693d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 19700fff87ecSAlex Elder struct ceph_osd_data *osd_data; 19713d14c5d2SYehuda Sadeh int rc = 0; 19723d14c5d2SYehuda Sadeh 19733d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 19743d14c5d2SYehuda Sadeh vino.snap, off, *plen); 19753d14c5d2SYehuda Sadeh req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 19763d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 19773d14c5d2SYehuda Sadeh NULL, 0, truncate_seq, truncate_size, NULL, 1978153e5167SAlex Elder false); 19796816282dSSage Weil if (IS_ERR(req)) 19806816282dSSage Weil return PTR_ERR(req); 19813d14c5d2SYehuda Sadeh 19823d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 19830fff87ecSAlex Elder 19840fff87ecSAlex Elder osd_data = &req->r_data_in; 19850fff87ecSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 19860fff87ecSAlex Elder osd_data->pages = pages; 1987e0c59487SAlex Elder osd_data->length = *plen; 19880fff87ecSAlex Elder osd_data->alignment = page_align; 19893d14c5d2SYehuda Sadeh 1990e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 1991e0c59487SAlex Elder off, *plen, osd_data->length, page_align); 19923d14c5d2SYehuda Sadeh 19933d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 19943d14c5d2SYehuda Sadeh if (!rc) 19953d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 19963d14c5d2SYehuda Sadeh 19973d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 19983d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 19993d14c5d2SYehuda Sadeh return rc; 20003d14c5d2SYehuda Sadeh } 20013d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 20023d14c5d2SYehuda Sadeh 20033d14c5d2SYehuda Sadeh /* 20043d14c5d2SYehuda Sadeh * do a synchronous write on N pages 20053d14c5d2SYehuda Sadeh */ 20063d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 20073d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 20083d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 20093d14c5d2SYehuda Sadeh u64 off, u64 len, 20103d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 20113d14c5d2SYehuda Sadeh struct timespec *mtime, 201224808826SAlex Elder struct page **pages, int num_pages) 20133d14c5d2SYehuda Sadeh { 20143d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 20150fff87ecSAlex Elder struct ceph_osd_data *osd_data; 20163d14c5d2SYehuda Sadeh int rc = 0; 2017b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 20183d14c5d2SYehuda Sadeh 20193d14c5d2SYehuda Sadeh BUG_ON(vino.snap != CEPH_NOSNAP); 20203d14c5d2SYehuda Sadeh req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 20213d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 202224808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2023fbf8685fSAlex Elder snapc, 0, 20243d14c5d2SYehuda Sadeh truncate_seq, truncate_size, mtime, 2025153e5167SAlex Elder true); 20266816282dSSage Weil if (IS_ERR(req)) 20276816282dSSage Weil return PTR_ERR(req); 20283d14c5d2SYehuda Sadeh 20293d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 20300fff87ecSAlex Elder osd_data = &req->r_data_out; 20310fff87ecSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 20320fff87ecSAlex Elder osd_data->pages = pages; 2033e0c59487SAlex Elder osd_data->length = len; 20340fff87ecSAlex Elder osd_data->alignment = page_align; 2035e0c59487SAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, osd_data->length); 20363d14c5d2SYehuda Sadeh 203787f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 20383d14c5d2SYehuda Sadeh if (!rc) 20393d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 20403d14c5d2SYehuda Sadeh 20413d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 20423d14c5d2SYehuda Sadeh if (rc == 0) 20433d14c5d2SYehuda Sadeh rc = len; 20443d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 20453d14c5d2SYehuda Sadeh return rc; 20463d14c5d2SYehuda Sadeh } 20473d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 20483d14c5d2SYehuda Sadeh 20493d14c5d2SYehuda Sadeh /* 20503d14c5d2SYehuda Sadeh * handle incoming message 20513d14c5d2SYehuda Sadeh */ 20523d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 20533d14c5d2SYehuda Sadeh { 20543d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 20553d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 20563d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 20573d14c5d2SYehuda Sadeh 20583d14c5d2SYehuda Sadeh if (!osd) 20593d14c5d2SYehuda Sadeh goto out; 20603d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 20613d14c5d2SYehuda Sadeh 20623d14c5d2SYehuda Sadeh switch (type) { 20633d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 20643d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 20653d14c5d2SYehuda Sadeh break; 20663d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 20673d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 20683d14c5d2SYehuda Sadeh break; 2069a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2070a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2071a40c4f10SYehuda Sadeh break; 20723d14c5d2SYehuda Sadeh 20733d14c5d2SYehuda Sadeh default: 20743d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 20753d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 20763d14c5d2SYehuda Sadeh } 20773d14c5d2SYehuda Sadeh out: 20783d14c5d2SYehuda Sadeh ceph_msg_put(msg); 20793d14c5d2SYehuda Sadeh } 20803d14c5d2SYehuda Sadeh 20813d14c5d2SYehuda Sadeh /* 20823d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 20833d14c5d2SYehuda Sadeh * pages. 20843d14c5d2SYehuda Sadeh */ 20853d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 20863d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 20873d14c5d2SYehuda Sadeh int *skip) 20883d14c5d2SYehuda Sadeh { 20893d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 20903d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 20913d14c5d2SYehuda Sadeh struct ceph_msg *m; 20923d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 20933d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 20943d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 20953d14c5d2SYehuda Sadeh u64 tid; 20963d14c5d2SYehuda Sadeh 20973d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 20983d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 20993d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 21003d14c5d2SYehuda Sadeh if (!req) { 21013d14c5d2SYehuda Sadeh *skip = 1; 21023d14c5d2SYehuda Sadeh m = NULL; 2103756a16a5SSage Weil dout("get_reply unknown tid %llu from osd%d\n", tid, 21043d14c5d2SYehuda Sadeh osd->o_osd); 21053d14c5d2SYehuda Sadeh goto out; 21063d14c5d2SYehuda Sadeh } 21073d14c5d2SYehuda Sadeh 21083d14c5d2SYehuda Sadeh if (req->r_con_filling_msg) { 21098921d114SAlex Elder dout("%s revoking msg %p from old con %p\n", __func__, 21103d14c5d2SYehuda Sadeh req->r_reply, req->r_con_filling_msg); 21118921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 21120d47766fSSage Weil req->r_con_filling_msg->ops->put(req->r_con_filling_msg); 21133d14c5d2SYehuda Sadeh req->r_con_filling_msg = NULL; 21143d14c5d2SYehuda Sadeh } 21153d14c5d2SYehuda Sadeh 21163d14c5d2SYehuda Sadeh if (front > req->r_reply->front.iov_len) { 21173d14c5d2SYehuda Sadeh pr_warning("get_reply front %d > preallocated %d\n", 21183d14c5d2SYehuda Sadeh front, (int)req->r_reply->front.iov_len); 2119b61c2763SSage Weil m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); 21203d14c5d2SYehuda Sadeh if (!m) 21213d14c5d2SYehuda Sadeh goto out; 21223d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 21233d14c5d2SYehuda Sadeh req->r_reply = m; 21243d14c5d2SYehuda Sadeh } 21253d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 21263d14c5d2SYehuda Sadeh 21273d14c5d2SYehuda Sadeh if (data_len > 0) { 21280fff87ecSAlex Elder struct ceph_osd_data *osd_data = &req->r_data_in; 21290fff87ecSAlex Elder 21300fff87ecSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 21310fff87ecSAlex Elder if (osd_data->pages && 2132e0c59487SAlex Elder unlikely(osd_data->length < data_len)) { 21332ac2b7a6SAlex Elder 2134e0c59487SAlex Elder pr_warning("tid %lld reply has %d bytes " 2135e0c59487SAlex Elder "we had only %llu bytes ready\n", 2136e0c59487SAlex Elder tid, data_len, osd_data->length); 21373d14c5d2SYehuda Sadeh *skip = 1; 21383d14c5d2SYehuda Sadeh ceph_msg_put(m); 21393d14c5d2SYehuda Sadeh m = NULL; 21403d14c5d2SYehuda Sadeh goto out; 21413d14c5d2SYehuda Sadeh } 21423d14c5d2SYehuda Sadeh } 21432ac2b7a6SAlex Elder } 21443d14c5d2SYehuda Sadeh *skip = 0; 21450d47766fSSage Weil req->r_con_filling_msg = con->ops->get(con); 21463d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 21473d14c5d2SYehuda Sadeh 21483d14c5d2SYehuda Sadeh out: 21493d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 21503d14c5d2SYehuda Sadeh return m; 21513d14c5d2SYehuda Sadeh 21523d14c5d2SYehuda Sadeh } 21533d14c5d2SYehuda Sadeh 21543d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 21553d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 21563d14c5d2SYehuda Sadeh int *skip) 21573d14c5d2SYehuda Sadeh { 21583d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 21593d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 21603d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 21613d14c5d2SYehuda Sadeh 21621c20f2d2SAlex Elder *skip = 0; 21633d14c5d2SYehuda Sadeh switch (type) { 21643d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2165a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2166b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 21673d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 21683d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 21693d14c5d2SYehuda Sadeh default: 21703d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 21713d14c5d2SYehuda Sadeh osd->o_osd); 21723d14c5d2SYehuda Sadeh *skip = 1; 21733d14c5d2SYehuda Sadeh return NULL; 21743d14c5d2SYehuda Sadeh } 21753d14c5d2SYehuda Sadeh } 21763d14c5d2SYehuda Sadeh 21773d14c5d2SYehuda Sadeh /* 21783d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 21793d14c5d2SYehuda Sadeh */ 21803d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 21813d14c5d2SYehuda Sadeh { 21823d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 21833d14c5d2SYehuda Sadeh if (get_osd(osd)) 21843d14c5d2SYehuda Sadeh return con; 21853d14c5d2SYehuda Sadeh return NULL; 21863d14c5d2SYehuda Sadeh } 21873d14c5d2SYehuda Sadeh 21883d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 21893d14c5d2SYehuda Sadeh { 21903d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 21913d14c5d2SYehuda Sadeh put_osd(osd); 21923d14c5d2SYehuda Sadeh } 21933d14c5d2SYehuda Sadeh 21943d14c5d2SYehuda Sadeh /* 21953d14c5d2SYehuda Sadeh * authentication 21963d14c5d2SYehuda Sadeh */ 2197a3530df3SAlex Elder /* 2198a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2199a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2200a3530df3SAlex Elder */ 2201a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 22028f43fb53SAlex Elder int *proto, int force_new) 22033d14c5d2SYehuda Sadeh { 22043d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 22053d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 22063d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 220774f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 22083d14c5d2SYehuda Sadeh 220974f1869fSAlex Elder if (force_new && auth->authorizer) { 2210a255651dSAlex Elder if (ac->ops && ac->ops->destroy_authorizer) 221174f1869fSAlex Elder ac->ops->destroy_authorizer(ac, auth->authorizer); 221274f1869fSAlex Elder auth->authorizer = NULL; 22133d14c5d2SYehuda Sadeh } 2214a255651dSAlex Elder if (!auth->authorizer && ac->ops && ac->ops->create_authorizer) { 2215a3530df3SAlex Elder int ret = ac->ops->create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2216a3530df3SAlex Elder auth); 22173d14c5d2SYehuda Sadeh if (ret) 2218a3530df3SAlex Elder return ERR_PTR(ret); 22193d14c5d2SYehuda Sadeh } 22203d14c5d2SYehuda Sadeh *proto = ac->protocol; 222174f1869fSAlex Elder 2222a3530df3SAlex Elder return auth; 22233d14c5d2SYehuda Sadeh } 22243d14c5d2SYehuda Sadeh 22253d14c5d2SYehuda Sadeh 22263d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 22273d14c5d2SYehuda Sadeh { 22283d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 22293d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 22303d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 22313d14c5d2SYehuda Sadeh 2232a255651dSAlex Elder /* 2233a255651dSAlex Elder * XXX If ac->ops or ac->ops->verify_authorizer_reply is null, 2234a255651dSAlex Elder * XXX which do we do: succeed or fail? 2235a255651dSAlex Elder */ 22366c4a1915SAlex Elder return ac->ops->verify_authorizer_reply(ac, o->o_auth.authorizer, len); 22373d14c5d2SYehuda Sadeh } 22383d14c5d2SYehuda Sadeh 22393d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 22403d14c5d2SYehuda Sadeh { 22413d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 22423d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 22433d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 22443d14c5d2SYehuda Sadeh 2245a255651dSAlex Elder if (ac->ops && ac->ops->invalidate_authorizer) 22463d14c5d2SYehuda Sadeh ac->ops->invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 22473d14c5d2SYehuda Sadeh 22483d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 22493d14c5d2SYehuda Sadeh } 22503d14c5d2SYehuda Sadeh 22513d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 22523d14c5d2SYehuda Sadeh .get = get_osd_con, 22533d14c5d2SYehuda Sadeh .put = put_osd_con, 22543d14c5d2SYehuda Sadeh .dispatch = dispatch, 22553d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 22563d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 22573d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 22583d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 22593d14c5d2SYehuda Sadeh .fault = osd_reset, 22603d14c5d2SYehuda Sadeh }; 2261