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 266f6c7006SSage Weil 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 41e75b45cfSAlex Elder int ceph_calc_raw_layout(struct ceph_file_layout *layout, 423d14c5d2SYehuda Sadeh u64 off, u64 *plen, u64 *bno, 433d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 443d14c5d2SYehuda Sadeh struct ceph_osd_req_op *op) 453d14c5d2SYehuda Sadeh { 463d14c5d2SYehuda Sadeh u64 orig_len = *plen; 473d14c5d2SYehuda Sadeh u64 objoff, objlen; /* extent in object */ 48d63b77f4SSage Weil int r; 493d14c5d2SYehuda Sadeh 503d14c5d2SYehuda Sadeh /* object extent? */ 51e8afad65SAlex Elder r = ceph_calc_file_object_mapping(layout, off, orig_len, bno, 523d14c5d2SYehuda Sadeh &objoff, &objlen); 53d63b77f4SSage Weil if (r < 0) 54d63b77f4SSage Weil return r; 55e8afad65SAlex Elder if (objlen < orig_len) { 56e8afad65SAlex Elder *plen = objlen; 573d14c5d2SYehuda Sadeh dout(" skipping last %llu, final file extent %llu~%llu\n", 583d14c5d2SYehuda Sadeh orig_len - *plen, off, *plen); 59e8afad65SAlex Elder } 603d14c5d2SYehuda Sadeh 613d14c5d2SYehuda Sadeh if (op_has_extent(op->op)) { 62a41bad1aSYan, Zheng u32 osize = le32_to_cpu(layout->fl_object_size); 633d14c5d2SYehuda Sadeh op->extent.offset = objoff; 643d14c5d2SYehuda Sadeh op->extent.length = objlen; 65a41bad1aSYan, Zheng if (op->extent.truncate_size <= off - objoff) { 66a41bad1aSYan, Zheng op->extent.truncate_size = 0; 67a41bad1aSYan, Zheng } else { 68a41bad1aSYan, Zheng op->extent.truncate_size -= off - objoff; 69a41bad1aSYan, Zheng if (op->extent.truncate_size > osize) 70a41bad1aSYan, Zheng op->extent.truncate_size = osize; 71a41bad1aSYan, Zheng } 723d14c5d2SYehuda Sadeh } 733d14c5d2SYehuda Sadeh req->r_num_pages = calc_pages_for(off, *plen); 74b7495fc2SSage Weil req->r_page_alignment = off & ~PAGE_MASK; 753d14c5d2SYehuda Sadeh if (op->op == CEPH_OSD_OP_WRITE) 763d14c5d2SYehuda Sadeh op->payload_len = *plen; 773d14c5d2SYehuda Sadeh 783d14c5d2SYehuda Sadeh dout("calc_layout bno=%llx %llu~%llu (%d pages)\n", 793d14c5d2SYehuda Sadeh *bno, objoff, objlen, req->r_num_pages); 80d63b77f4SSage Weil return 0; 813d14c5d2SYehuda Sadeh } 823d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_calc_raw_layout); 833d14c5d2SYehuda Sadeh 843d14c5d2SYehuda Sadeh /* 853d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 863d14c5d2SYehuda Sadeh * 873d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 883d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 893d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 903d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 913d14c5d2SYehuda Sadeh * access to storage. 923d14c5d2SYehuda Sadeh * 933d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 943d14c5d2SYehuda Sadeh * are described by the osd map. 953d14c5d2SYehuda Sadeh * 963d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 973d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 983d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 993d14c5d2SYehuda Sadeh * channel with an OSD is reset. 1003d14c5d2SYehuda Sadeh */ 1013d14c5d2SYehuda Sadeh 1023d14c5d2SYehuda Sadeh /* 1033d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 1043d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 1053d14c5d2SYehuda Sadeh * object boundary. 1063d14c5d2SYehuda Sadeh * 1073d14c5d2SYehuda Sadeh * fill osd op in request message. 1083d14c5d2SYehuda Sadeh */ 109e75b45cfSAlex Elder static int calc_layout(struct ceph_vino vino, 1103d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 1113d14c5d2SYehuda Sadeh u64 off, u64 *plen, 1123d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 1133d14c5d2SYehuda Sadeh struct ceph_osd_req_op *op) 1143d14c5d2SYehuda Sadeh { 1153d14c5d2SYehuda Sadeh u64 bno; 116d63b77f4SSage Weil int r; 1173d14c5d2SYehuda Sadeh 118e75b45cfSAlex Elder r = ceph_calc_raw_layout(layout, off, plen, &bno, req, op); 119d63b77f4SSage Weil if (r < 0) 120d63b77f4SSage Weil return r; 1213d14c5d2SYehuda Sadeh 1222dab036bSSage Weil snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno); 1233d14c5d2SYehuda Sadeh req->r_oid_len = strlen(req->r_oid); 124d63b77f4SSage Weil 125d63b77f4SSage Weil return r; 1263d14c5d2SYehuda Sadeh } 1273d14c5d2SYehuda Sadeh 1283d14c5d2SYehuda Sadeh /* 1293d14c5d2SYehuda Sadeh * requests 1303d14c5d2SYehuda Sadeh */ 1313d14c5d2SYehuda Sadeh void ceph_osdc_release_request(struct kref *kref) 1323d14c5d2SYehuda Sadeh { 1333d14c5d2SYehuda Sadeh struct ceph_osd_request *req = container_of(kref, 1343d14c5d2SYehuda Sadeh struct ceph_osd_request, 1353d14c5d2SYehuda Sadeh r_kref); 1363d14c5d2SYehuda Sadeh 1373d14c5d2SYehuda Sadeh if (req->r_request) 1383d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 1393d14c5d2SYehuda Sadeh if (req->r_con_filling_msg) { 1408921d114SAlex Elder dout("%s revoking pages %p from con %p\n", __func__, 1413d14c5d2SYehuda Sadeh req->r_pages, req->r_con_filling_msg); 1428921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 1430d47766fSSage Weil req->r_con_filling_msg->ops->put(req->r_con_filling_msg); 1443d14c5d2SYehuda Sadeh } 145ab8cb34aSAlex Elder if (req->r_reply) 146ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 1473d14c5d2SYehuda Sadeh if (req->r_own_pages) 1483d14c5d2SYehuda Sadeh ceph_release_page_vector(req->r_pages, 1493d14c5d2SYehuda Sadeh req->r_num_pages); 1503d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 1513d14c5d2SYehuda Sadeh if (req->r_bio) 1523d14c5d2SYehuda Sadeh bio_put(req->r_bio); 1533d14c5d2SYehuda Sadeh #endif 1543d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 155c885837fSAlex Elder ceph_pagelist_release(&req->r_trail); 1563d14c5d2SYehuda Sadeh if (req->r_mempool) 1573d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 1583d14c5d2SYehuda Sadeh else 1593d14c5d2SYehuda Sadeh kfree(req); 1603d14c5d2SYehuda Sadeh } 1613d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_release_request); 1623d14c5d2SYehuda Sadeh 1635b9d1b1cSAlex Elder static int get_num_ops(struct ceph_osd_req_op *ops) 1643d14c5d2SYehuda Sadeh { 1653d14c5d2SYehuda Sadeh int i = 0; 1663d14c5d2SYehuda Sadeh 1675b9d1b1cSAlex Elder while (ops[i].op) 1683d14c5d2SYehuda Sadeh i++; 1693d14c5d2SYehuda Sadeh 1703d14c5d2SYehuda Sadeh return i; 1713d14c5d2SYehuda Sadeh } 1723d14c5d2SYehuda Sadeh 1733d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 1743d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 1753d14c5d2SYehuda Sadeh struct ceph_osd_req_op *ops, 1763d14c5d2SYehuda Sadeh bool use_mempool, 17754a54007SAlex Elder gfp_t gfp_flags) 1783d14c5d2SYehuda Sadeh { 1793d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1803d14c5d2SYehuda Sadeh struct ceph_msg *msg; 1815b9d1b1cSAlex Elder int num_op = get_num_ops(ops); 1823d14c5d2SYehuda Sadeh size_t msg_size = sizeof(struct ceph_osd_request_head); 1833d14c5d2SYehuda Sadeh 1843d14c5d2SYehuda Sadeh msg_size += num_op*sizeof(struct ceph_osd_op); 1853d14c5d2SYehuda Sadeh 1863d14c5d2SYehuda Sadeh if (use_mempool) { 1873d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 1883d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 1893d14c5d2SYehuda Sadeh } else { 1903d14c5d2SYehuda Sadeh req = kzalloc(sizeof(*req), gfp_flags); 1913d14c5d2SYehuda Sadeh } 1923d14c5d2SYehuda Sadeh if (req == NULL) 1933d14c5d2SYehuda Sadeh return NULL; 1943d14c5d2SYehuda Sadeh 1953d14c5d2SYehuda Sadeh req->r_osdc = osdc; 1963d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 1973d14c5d2SYehuda Sadeh 1983d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 1993d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 2003d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 201a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 2023d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 203a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 204a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_osd); 205935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 206cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 207cd43045cSSage Weil 2083d14c5d2SYehuda Sadeh /* create reply message */ 2093d14c5d2SYehuda Sadeh if (use_mempool) 2103d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 2113d14c5d2SYehuda Sadeh else 2123d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 213b61c2763SSage Weil OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 2143d14c5d2SYehuda Sadeh if (!msg) { 2153d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 2163d14c5d2SYehuda Sadeh return NULL; 2173d14c5d2SYehuda Sadeh } 2183d14c5d2SYehuda Sadeh req->r_reply = msg; 2193d14c5d2SYehuda Sadeh 220c885837fSAlex Elder ceph_pagelist_init(&req->r_trail); 221d50b409fSSage Weil 2223d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 223224736d9SStratos Psomadakis msg_size += MAX_OBJ_NAME_SIZE; 2243d14c5d2SYehuda Sadeh if (snapc) 2253d14c5d2SYehuda Sadeh msg_size += sizeof(u64) * snapc->num_snaps; 2263d14c5d2SYehuda Sadeh if (use_mempool) 2273d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 2283d14c5d2SYehuda Sadeh else 229b61c2763SSage Weil msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 2303d14c5d2SYehuda Sadeh if (!msg) { 2313d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 2323d14c5d2SYehuda Sadeh return NULL; 2333d14c5d2SYehuda Sadeh } 2343d14c5d2SYehuda Sadeh 2353d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 2363d14c5d2SYehuda Sadeh 2373d14c5d2SYehuda Sadeh req->r_request = msg; 2383d14c5d2SYehuda Sadeh 2393d14c5d2SYehuda Sadeh return req; 2403d14c5d2SYehuda Sadeh } 2413d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 2423d14c5d2SYehuda Sadeh 2433d14c5d2SYehuda Sadeh static void osd_req_encode_op(struct ceph_osd_request *req, 2443d14c5d2SYehuda Sadeh struct ceph_osd_op *dst, 2453d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src) 2463d14c5d2SYehuda Sadeh { 2473d14c5d2SYehuda Sadeh dst->op = cpu_to_le16(src->op); 2483d14c5d2SYehuda Sadeh 249065a68f9SAlex Elder switch (src->op) { 2503d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 2513d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 2523d14c5d2SYehuda Sadeh dst->extent.offset = 2533d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.offset); 2543d14c5d2SYehuda Sadeh dst->extent.length = 2553d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.length); 2563d14c5d2SYehuda Sadeh dst->extent.truncate_size = 2573d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 2583d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 2593d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 2603d14c5d2SYehuda Sadeh break; 2613d14c5d2SYehuda Sadeh 2623d14c5d2SYehuda Sadeh case CEPH_OSD_OP_GETXATTR: 2633d14c5d2SYehuda Sadeh case CEPH_OSD_OP_SETXATTR: 2643d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CMPXATTR: 2653d14c5d2SYehuda Sadeh dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 2663d14c5d2SYehuda Sadeh dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 2673d14c5d2SYehuda Sadeh dst->xattr.cmp_op = src->xattr.cmp_op; 2683d14c5d2SYehuda Sadeh dst->xattr.cmp_mode = src->xattr.cmp_mode; 269c885837fSAlex Elder ceph_pagelist_append(&req->r_trail, src->xattr.name, 2703d14c5d2SYehuda Sadeh src->xattr.name_len); 271c885837fSAlex Elder ceph_pagelist_append(&req->r_trail, src->xattr.val, 2723d14c5d2SYehuda Sadeh src->xattr.value_len); 2733d14c5d2SYehuda Sadeh break; 2743d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 2753d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 2763d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 2773d14c5d2SYehuda Sadeh dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 2783d14c5d2SYehuda Sadeh 279c885837fSAlex Elder ceph_pagelist_append(&req->r_trail, src->cls.class_name, 2803d14c5d2SYehuda Sadeh src->cls.class_len); 281c885837fSAlex Elder ceph_pagelist_append(&req->r_trail, src->cls.method_name, 2823d14c5d2SYehuda Sadeh src->cls.method_len); 283c885837fSAlex Elder ceph_pagelist_append(&req->r_trail, src->cls.indata, 2843d14c5d2SYehuda Sadeh src->cls.indata_len); 2853d14c5d2SYehuda Sadeh break; 2863d14c5d2SYehuda Sadeh case CEPH_OSD_OP_ROLLBACK: 2873d14c5d2SYehuda Sadeh dst->snap.snapid = cpu_to_le64(src->snap.snapid); 2883d14c5d2SYehuda Sadeh break; 2893d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 2903d14c5d2SYehuda Sadeh break; 291a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY: 292a40c4f10SYehuda Sadeh { 293a40c4f10SYehuda Sadeh __le32 prot_ver = cpu_to_le32(src->watch.prot_ver); 294a40c4f10SYehuda Sadeh __le32 timeout = cpu_to_le32(src->watch.timeout); 295a40c4f10SYehuda Sadeh 296c885837fSAlex Elder ceph_pagelist_append(&req->r_trail, 297a40c4f10SYehuda Sadeh &prot_ver, sizeof(prot_ver)); 298c885837fSAlex Elder ceph_pagelist_append(&req->r_trail, 299a40c4f10SYehuda Sadeh &timeout, sizeof(timeout)); 300a40c4f10SYehuda Sadeh } 301a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 302a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 303a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 304a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 305a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 306a40c4f10SYehuda Sadeh break; 3073d14c5d2SYehuda Sadeh default: 3083d14c5d2SYehuda Sadeh pr_err("unrecognized osd opcode %d\n", dst->op); 3093d14c5d2SYehuda Sadeh WARN_ON(1); 3103d14c5d2SYehuda Sadeh break; 3113d14c5d2SYehuda Sadeh } 3123d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 3133d14c5d2SYehuda Sadeh } 3143d14c5d2SYehuda Sadeh 3153d14c5d2SYehuda Sadeh /* 3163d14c5d2SYehuda Sadeh * build new request AND message 3173d14c5d2SYehuda Sadeh * 3183d14c5d2SYehuda Sadeh */ 3193d14c5d2SYehuda Sadeh void ceph_osdc_build_request(struct ceph_osd_request *req, 3200120be3cSAlex Elder u64 off, u64 len, 3213d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_ops, 3224d6b250bSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 323af77f26cSAlex Elder struct timespec *mtime) 3243d14c5d2SYehuda Sadeh { 3253d14c5d2SYehuda Sadeh struct ceph_msg *msg = req->r_request; 3263d14c5d2SYehuda Sadeh struct ceph_osd_request_head *head; 3273d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_op; 3283d14c5d2SYehuda Sadeh struct ceph_osd_op *op; 3293d14c5d2SYehuda Sadeh void *p; 3305b9d1b1cSAlex Elder int num_op = get_num_ops(src_ops); 3313d14c5d2SYehuda Sadeh size_t msg_size = sizeof(*head) + num_op*sizeof(*op); 3323d14c5d2SYehuda Sadeh int flags = req->r_flags; 3333d14c5d2SYehuda Sadeh u64 data_len = 0; 3343d14c5d2SYehuda Sadeh int i; 3353d14c5d2SYehuda Sadeh 336d178a9e7SAlex Elder WARN_ON((flags & (CEPH_OSD_FLAG_READ|CEPH_OSD_FLAG_WRITE)) == 0); 337d178a9e7SAlex Elder 3383d14c5d2SYehuda Sadeh head = msg->front.iov_base; 3394d6b250bSAlex Elder head->snapid = cpu_to_le64(snap_id); 3403d14c5d2SYehuda Sadeh op = (void *)(head + 1); 3413d14c5d2SYehuda Sadeh p = (void *)(op + num_op); 3423d14c5d2SYehuda Sadeh 3433d14c5d2SYehuda Sadeh req->r_snapc = ceph_get_snap_context(snapc); 3443d14c5d2SYehuda Sadeh 3453d14c5d2SYehuda Sadeh head->client_inc = cpu_to_le32(1); /* always, for now. */ 3463d14c5d2SYehuda Sadeh head->flags = cpu_to_le32(flags); 3473d14c5d2SYehuda Sadeh if (flags & CEPH_OSD_FLAG_WRITE) 3483d14c5d2SYehuda Sadeh ceph_encode_timespec(&head->mtime, mtime); 3493d14c5d2SYehuda Sadeh head->num_ops = cpu_to_le16(num_op); 3503d14c5d2SYehuda Sadeh 3513d14c5d2SYehuda Sadeh 3523d14c5d2SYehuda Sadeh /* fill in oid */ 353af77f26cSAlex Elder head->object_len = cpu_to_le32(req->r_oid_len); 354af77f26cSAlex Elder memcpy(p, req->r_oid, req->r_oid_len); 355af77f26cSAlex Elder p += req->r_oid_len; 3563d14c5d2SYehuda Sadeh 3573d14c5d2SYehuda Sadeh src_op = src_ops; 3583d14c5d2SYehuda Sadeh while (src_op->op) { 3593d14c5d2SYehuda Sadeh osd_req_encode_op(req, op, src_op); 3603d14c5d2SYehuda Sadeh src_op++; 3613d14c5d2SYehuda Sadeh op++; 3623d14c5d2SYehuda Sadeh } 3633d14c5d2SYehuda Sadeh 364c885837fSAlex Elder data_len += req->r_trail.length; 3653d14c5d2SYehuda Sadeh 3663d14c5d2SYehuda Sadeh if (snapc) { 3673d14c5d2SYehuda Sadeh head->snap_seq = cpu_to_le64(snapc->seq); 3683d14c5d2SYehuda Sadeh head->num_snaps = cpu_to_le32(snapc->num_snaps); 3693d14c5d2SYehuda Sadeh for (i = 0; i < snapc->num_snaps; i++) { 3703d14c5d2SYehuda Sadeh put_unaligned_le64(snapc->snaps[i], p); 3713d14c5d2SYehuda Sadeh p += sizeof(u64); 3723d14c5d2SYehuda Sadeh } 3733d14c5d2SYehuda Sadeh } 3743d14c5d2SYehuda Sadeh 3753d14c5d2SYehuda Sadeh if (flags & CEPH_OSD_FLAG_WRITE) { 3763d14c5d2SYehuda Sadeh req->r_request->hdr.data_off = cpu_to_le16(off); 3770120be3cSAlex Elder req->r_request->hdr.data_len = cpu_to_le32(len + data_len); 3783d14c5d2SYehuda Sadeh } else if (data_len) { 3793d14c5d2SYehuda Sadeh req->r_request->hdr.data_off = 0; 3803d14c5d2SYehuda Sadeh req->r_request->hdr.data_len = cpu_to_le32(data_len); 3813d14c5d2SYehuda Sadeh } 3823d14c5d2SYehuda Sadeh 383c5c6b19dSSage Weil req->r_request->page_alignment = req->r_page_alignment; 384c5c6b19dSSage Weil 3853d14c5d2SYehuda Sadeh BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 3863d14c5d2SYehuda Sadeh msg_size = p - msg->front.iov_base; 3873d14c5d2SYehuda Sadeh msg->front.iov_len = msg_size; 3883d14c5d2SYehuda Sadeh msg->hdr.front_len = cpu_to_le32(msg_size); 3893d14c5d2SYehuda Sadeh return; 3903d14c5d2SYehuda Sadeh } 3913d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_build_request); 3923d14c5d2SYehuda Sadeh 3933d14c5d2SYehuda Sadeh /* 3943d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 3953d14c5d2SYehuda Sadeh * extent as needed. 3963d14c5d2SYehuda Sadeh * 3973d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 3983d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 3993d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 4003d14c5d2SYehuda Sadeh * 4013d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 4023d14c5d2SYehuda Sadeh * data quickly. 4033d14c5d2SYehuda Sadeh */ 4043d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 4053d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 4063d14c5d2SYehuda Sadeh struct ceph_vino vino, 4073d14c5d2SYehuda Sadeh u64 off, u64 *plen, 4083d14c5d2SYehuda Sadeh int opcode, int flags, 4093d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 4103d14c5d2SYehuda Sadeh int do_sync, 4113d14c5d2SYehuda Sadeh u32 truncate_seq, 4123d14c5d2SYehuda Sadeh u64 truncate_size, 4133d14c5d2SYehuda Sadeh struct timespec *mtime, 414b7495fc2SSage Weil bool use_mempool, int num_reply, 415b7495fc2SSage Weil int page_align) 4163d14c5d2SYehuda Sadeh { 4173d14c5d2SYehuda Sadeh struct ceph_osd_req_op ops[3]; 4183d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 4196816282dSSage Weil int r; 4203d14c5d2SYehuda Sadeh 4213d14c5d2SYehuda Sadeh ops[0].op = opcode; 4223d14c5d2SYehuda Sadeh ops[0].extent.truncate_seq = truncate_seq; 4233d14c5d2SYehuda Sadeh ops[0].extent.truncate_size = truncate_size; 4243d14c5d2SYehuda Sadeh ops[0].payload_len = 0; 4253d14c5d2SYehuda Sadeh 4263d14c5d2SYehuda Sadeh if (do_sync) { 4273d14c5d2SYehuda Sadeh ops[1].op = CEPH_OSD_OP_STARTSYNC; 4283d14c5d2SYehuda Sadeh ops[1].payload_len = 0; 4293d14c5d2SYehuda Sadeh ops[2].op = 0; 4303d14c5d2SYehuda Sadeh } else 4313d14c5d2SYehuda Sadeh ops[1].op = 0; 4323d14c5d2SYehuda Sadeh 43354a54007SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, ops, use_mempool, GFP_NOFS); 4344ad12621SSage Weil if (!req) 4356816282dSSage Weil return ERR_PTR(-ENOMEM); 436d178a9e7SAlex Elder req->r_flags = flags; 4373d14c5d2SYehuda Sadeh 4383d14c5d2SYehuda Sadeh /* calculate max write size */ 439e75b45cfSAlex Elder r = calc_layout(vino, layout, off, plen, req, ops); 4406816282dSSage Weil if (r < 0) 4416816282dSSage Weil return ERR_PTR(r); 4423d14c5d2SYehuda Sadeh req->r_file_layout = *layout; /* keep a copy */ 4433d14c5d2SYehuda Sadeh 4449bb0ce2bSSage Weil /* in case it differs from natural (file) alignment that 4459bb0ce2bSSage Weil calc_layout filled in for us */ 4469bb0ce2bSSage Weil req->r_num_pages = calc_pages_for(page_align, *plen); 447b7495fc2SSage Weil req->r_page_alignment = page_align; 448b7495fc2SSage Weil 4494d6b250bSAlex Elder ceph_osdc_build_request(req, off, *plen, ops, snapc, vino.snap, mtime); 4503d14c5d2SYehuda Sadeh 4513d14c5d2SYehuda Sadeh return req; 4523d14c5d2SYehuda Sadeh } 4533d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 4543d14c5d2SYehuda Sadeh 4553d14c5d2SYehuda Sadeh /* 4563d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 4573d14c5d2SYehuda Sadeh */ 4583d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 4593d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 4603d14c5d2SYehuda Sadeh { 4613d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 4623d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 4633d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 4643d14c5d2SYehuda Sadeh 4653d14c5d2SYehuda Sadeh while (*p) { 4663d14c5d2SYehuda Sadeh parent = *p; 4673d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 4683d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 4693d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 4703d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 4713d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 4723d14c5d2SYehuda Sadeh else 4733d14c5d2SYehuda Sadeh BUG(); 4743d14c5d2SYehuda Sadeh } 4753d14c5d2SYehuda Sadeh 4763d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 4773d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 4783d14c5d2SYehuda Sadeh } 4793d14c5d2SYehuda Sadeh 4803d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 4813d14c5d2SYehuda Sadeh u64 tid) 4823d14c5d2SYehuda Sadeh { 4833d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 4843d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 4853d14c5d2SYehuda Sadeh 4863d14c5d2SYehuda Sadeh while (n) { 4873d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 4883d14c5d2SYehuda Sadeh if (tid < req->r_tid) 4893d14c5d2SYehuda Sadeh n = n->rb_left; 4903d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 4913d14c5d2SYehuda Sadeh n = n->rb_right; 4923d14c5d2SYehuda Sadeh else 4933d14c5d2SYehuda Sadeh return req; 4943d14c5d2SYehuda Sadeh } 4953d14c5d2SYehuda Sadeh return NULL; 4963d14c5d2SYehuda Sadeh } 4973d14c5d2SYehuda Sadeh 4983d14c5d2SYehuda Sadeh static struct ceph_osd_request * 4993d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 5003d14c5d2SYehuda Sadeh u64 tid) 5013d14c5d2SYehuda Sadeh { 5023d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5033d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 5043d14c5d2SYehuda Sadeh 5053d14c5d2SYehuda Sadeh while (n) { 5063d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 5073d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 5083d14c5d2SYehuda Sadeh if (!n->rb_left) 5093d14c5d2SYehuda Sadeh return req; 5103d14c5d2SYehuda Sadeh n = n->rb_left; 5113d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 5123d14c5d2SYehuda Sadeh n = n->rb_right; 5133d14c5d2SYehuda Sadeh } else { 5143d14c5d2SYehuda Sadeh return req; 5153d14c5d2SYehuda Sadeh } 5163d14c5d2SYehuda Sadeh } 5173d14c5d2SYehuda Sadeh return NULL; 5183d14c5d2SYehuda Sadeh } 5193d14c5d2SYehuda Sadeh 5206f6c7006SSage Weil /* 5216f6c7006SSage Weil * Resubmit requests pending on the given osd. 5226f6c7006SSage Weil */ 5236f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 5246f6c7006SSage Weil struct ceph_osd *osd) 5256f6c7006SSage Weil { 526a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 5276f6c7006SSage Weil int err; 5286f6c7006SSage Weil 5296f6c7006SSage Weil dout("__kick_osd_requests osd%d\n", osd->o_osd); 5306f6c7006SSage Weil err = __reset_osd(osdc, osd); 531685a7555SAlex Elder if (err) 5326f6c7006SSage Weil return; 5336f6c7006SSage Weil 5346f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 5356f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_unsent); 5366f6c7006SSage Weil dout("requeued %p tid %llu osd%d\n", req, req->r_tid, 5376f6c7006SSage Weil osd->o_osd); 538a40c4f10SYehuda Sadeh if (!req->r_linger) 5396f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 5406f6c7006SSage Weil } 541a40c4f10SYehuda Sadeh 542a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 543a40c4f10SYehuda Sadeh r_linger_osd) { 54477f38e0eSSage Weil /* 54577f38e0eSSage Weil * reregister request prior to unregistering linger so 54677f38e0eSSage Weil * that r_osd is preserved. 54777f38e0eSSage Weil */ 54877f38e0eSSage Weil BUG_ON(!list_empty(&req->r_req_lru_item)); 549a40c4f10SYehuda Sadeh __register_request(osdc, req); 55077f38e0eSSage Weil list_add(&req->r_req_lru_item, &osdc->req_unsent); 55177f38e0eSSage Weil list_add(&req->r_osd_item, &req->r_osd->o_requests); 55277f38e0eSSage Weil __unregister_linger_request(osdc, req); 553a40c4f10SYehuda Sadeh dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, 554a40c4f10SYehuda Sadeh osd->o_osd); 555a40c4f10SYehuda Sadeh } 5566f6c7006SSage Weil } 5576f6c7006SSage Weil 5583d14c5d2SYehuda Sadeh /* 5593d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 5603d14c5d2SYehuda Sadeh */ 5613d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 5623d14c5d2SYehuda Sadeh { 5633d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 5643d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 5653d14c5d2SYehuda Sadeh 5663d14c5d2SYehuda Sadeh if (!osd) 5673d14c5d2SYehuda Sadeh return; 5683d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 5693d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 5703d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 57183aff95eSSage Weil mutex_lock(&osdc->request_mutex); 57283aff95eSSage Weil __kick_osd_requests(osdc, osd); 57383aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 5746f6c7006SSage Weil send_queued(osdc); 5753d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 5763d14c5d2SYehuda Sadeh } 5773d14c5d2SYehuda Sadeh 5783d14c5d2SYehuda Sadeh /* 5793d14c5d2SYehuda Sadeh * Track open sessions with osds. 5803d14c5d2SYehuda Sadeh */ 581e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 5823d14c5d2SYehuda Sadeh { 5833d14c5d2SYehuda Sadeh struct ceph_osd *osd; 5843d14c5d2SYehuda Sadeh 5853d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 5863d14c5d2SYehuda Sadeh if (!osd) 5873d14c5d2SYehuda Sadeh return NULL; 5883d14c5d2SYehuda Sadeh 5893d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 5903d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 591e10006f8SAlex Elder osd->o_osd = onum; 592f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 5933d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 594a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 5953d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 5963d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 5973d14c5d2SYehuda Sadeh 598b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 5993d14c5d2SYehuda Sadeh 6003d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 6013d14c5d2SYehuda Sadeh return osd; 6023d14c5d2SYehuda Sadeh } 6033d14c5d2SYehuda Sadeh 6043d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 6053d14c5d2SYehuda Sadeh { 6063d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 6073d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 6083d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 6093d14c5d2SYehuda Sadeh return osd; 6103d14c5d2SYehuda Sadeh } else { 6113d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 6123d14c5d2SYehuda Sadeh return NULL; 6133d14c5d2SYehuda Sadeh } 6143d14c5d2SYehuda Sadeh } 6153d14c5d2SYehuda Sadeh 6163d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 6173d14c5d2SYehuda Sadeh { 6183d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 6193d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 620a255651dSAlex Elder if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { 6213d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 6223d14c5d2SYehuda Sadeh 623a255651dSAlex Elder if (ac->ops && ac->ops->destroy_authorizer) 6246c4a1915SAlex Elder ac->ops->destroy_authorizer(ac, osd->o_auth.authorizer); 6253d14c5d2SYehuda Sadeh kfree(osd); 6263d14c5d2SYehuda Sadeh } 6273d14c5d2SYehuda Sadeh } 6283d14c5d2SYehuda Sadeh 6293d14c5d2SYehuda Sadeh /* 6303d14c5d2SYehuda Sadeh * remove an osd from our map 6313d14c5d2SYehuda Sadeh */ 6323d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 6333d14c5d2SYehuda Sadeh { 6343d14c5d2SYehuda Sadeh dout("__remove_osd %p\n", osd); 6353d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_requests)); 6363d14c5d2SYehuda Sadeh rb_erase(&osd->o_node, &osdc->osds); 6373d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 6383d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 6393d14c5d2SYehuda Sadeh put_osd(osd); 6403d14c5d2SYehuda Sadeh } 6413d14c5d2SYehuda Sadeh 642aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 643aca420bcSSage Weil { 644048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 645aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 646aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 647aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 648aca420bcSSage Weil struct ceph_osd, o_node); 649aca420bcSSage Weil __remove_osd(osdc, osd); 650aca420bcSSage Weil } 651aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 652aca420bcSSage Weil } 653aca420bcSSage Weil 6543d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 6553d14c5d2SYehuda Sadeh struct ceph_osd *osd) 6563d14c5d2SYehuda Sadeh { 6573d14c5d2SYehuda Sadeh dout("__move_osd_to_lru %p\n", osd); 6583d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 6593d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 6603d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 6613d14c5d2SYehuda Sadeh } 6623d14c5d2SYehuda Sadeh 6633d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 6643d14c5d2SYehuda Sadeh { 6653d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 6663d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 6673d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 6683d14c5d2SYehuda Sadeh } 6693d14c5d2SYehuda Sadeh 670aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 6713d14c5d2SYehuda Sadeh { 6723d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 6733d14c5d2SYehuda Sadeh 6743d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 6753d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 6763d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 677aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 6783d14c5d2SYehuda Sadeh break; 6793d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 6803d14c5d2SYehuda Sadeh } 6813d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 6823d14c5d2SYehuda Sadeh } 6833d14c5d2SYehuda Sadeh 6843d14c5d2SYehuda Sadeh /* 6853d14c5d2SYehuda Sadeh * reset osd connect 6863d14c5d2SYehuda Sadeh */ 6873d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 6883d14c5d2SYehuda Sadeh { 689c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 6903d14c5d2SYehuda Sadeh 6913d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 692a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 693a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 6943d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 695c3acb181SAlex Elder 696c3acb181SAlex Elder return -ENODEV; 697c3acb181SAlex Elder } 698c3acb181SAlex Elder 699c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 700c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 7013d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 702c3acb181SAlex Elder struct ceph_osd_request *req; 703c3acb181SAlex Elder 7043d14c5d2SYehuda Sadeh dout(" osd addr hasn't changed and connection never opened," 7053d14c5d2SYehuda Sadeh " letting msgr retry"); 7063d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 7073d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 7083d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 709c3acb181SAlex Elder 710c3acb181SAlex Elder return -EAGAIN; 7113d14c5d2SYehuda Sadeh } 712c3acb181SAlex Elder 713c3acb181SAlex Elder ceph_con_close(&osd->o_con); 714c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 715c3acb181SAlex Elder osd->o_incarnation++; 716c3acb181SAlex Elder 717c3acb181SAlex Elder return 0; 7183d14c5d2SYehuda Sadeh } 7193d14c5d2SYehuda Sadeh 7203d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 7213d14c5d2SYehuda Sadeh { 7223d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 7233d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 7243d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 7253d14c5d2SYehuda Sadeh 726aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 7273d14c5d2SYehuda Sadeh while (*p) { 7283d14c5d2SYehuda Sadeh parent = *p; 7293d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 7303d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 7313d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 7323d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 7333d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 7343d14c5d2SYehuda Sadeh else 7353d14c5d2SYehuda Sadeh BUG(); 7363d14c5d2SYehuda Sadeh } 7373d14c5d2SYehuda Sadeh 7383d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 7393d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 7403d14c5d2SYehuda Sadeh } 7413d14c5d2SYehuda Sadeh 7423d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 7433d14c5d2SYehuda Sadeh { 7443d14c5d2SYehuda Sadeh struct ceph_osd *osd; 7453d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 7463d14c5d2SYehuda Sadeh 7473d14c5d2SYehuda Sadeh while (n) { 7483d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 7493d14c5d2SYehuda Sadeh if (o < osd->o_osd) 7503d14c5d2SYehuda Sadeh n = n->rb_left; 7513d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 7523d14c5d2SYehuda Sadeh n = n->rb_right; 7533d14c5d2SYehuda Sadeh else 7543d14c5d2SYehuda Sadeh return osd; 7553d14c5d2SYehuda Sadeh } 7563d14c5d2SYehuda Sadeh return NULL; 7573d14c5d2SYehuda Sadeh } 7583d14c5d2SYehuda Sadeh 7593d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 7603d14c5d2SYehuda Sadeh { 7613d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 7623d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 7633d14c5d2SYehuda Sadeh } 7643d14c5d2SYehuda Sadeh 7653d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 7663d14c5d2SYehuda Sadeh { 7673d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 7683d14c5d2SYehuda Sadeh } 7693d14c5d2SYehuda Sadeh 7703d14c5d2SYehuda Sadeh /* 7713d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 7723d14c5d2SYehuda Sadeh * the timeout event. 7733d14c5d2SYehuda Sadeh */ 774a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 7753d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 7763d14c5d2SYehuda Sadeh { 7773d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 7783d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 77977f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 7803d14c5d2SYehuda Sadeh __insert_request(osdc, req); 7813d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 7823d14c5d2SYehuda Sadeh osdc->num_requests++; 7833d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 7843d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 7853d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 7863d14c5d2SYehuda Sadeh } 787a40c4f10SYehuda Sadeh } 788a40c4f10SYehuda Sadeh 789a40c4f10SYehuda Sadeh static void register_request(struct ceph_osd_client *osdc, 790a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 791a40c4f10SYehuda Sadeh { 792a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 793a40c4f10SYehuda Sadeh __register_request(osdc, req); 7943d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 7953d14c5d2SYehuda Sadeh } 7963d14c5d2SYehuda Sadeh 7973d14c5d2SYehuda Sadeh /* 7983d14c5d2SYehuda Sadeh * called under osdc->request_mutex 7993d14c5d2SYehuda Sadeh */ 8003d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 8013d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 8023d14c5d2SYehuda Sadeh { 80335f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 80435f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 80535f9f8a0SSage Weil req, req->r_tid); 80635f9f8a0SSage Weil return; 80735f9f8a0SSage Weil } 80835f9f8a0SSage Weil 8093d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 8103d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 8113d14c5d2SYehuda Sadeh osdc->num_requests--; 8123d14c5d2SYehuda Sadeh 8133d14c5d2SYehuda Sadeh if (req->r_osd) { 8143d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 8156740a845SAlex Elder ceph_msg_revoke(req->r_request); 8163d14c5d2SYehuda Sadeh 8173d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 818a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 819a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 820a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 8213d14c5d2SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 822a40c4f10SYehuda Sadeh } 823fbdb9190SSage Weil if (list_empty(&req->r_linger_item)) 8243d14c5d2SYehuda Sadeh req->r_osd = NULL; 8253d14c5d2SYehuda Sadeh } 8263d14c5d2SYehuda Sadeh 8277d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 8283d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 8293d14c5d2SYehuda Sadeh 8303d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 8313d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 8323d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 8333d14c5d2SYehuda Sadeh } 8343d14c5d2SYehuda Sadeh } 8353d14c5d2SYehuda Sadeh 8363d14c5d2SYehuda Sadeh /* 8373d14c5d2SYehuda Sadeh * Cancel a previously queued request message 8383d14c5d2SYehuda Sadeh */ 8393d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 8403d14c5d2SYehuda Sadeh { 8413d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 8426740a845SAlex Elder ceph_msg_revoke(req->r_request); 8433d14c5d2SYehuda Sadeh req->r_sent = 0; 8443d14c5d2SYehuda Sadeh } 8453d14c5d2SYehuda Sadeh } 8463d14c5d2SYehuda Sadeh 847a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 848a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 849a40c4f10SYehuda Sadeh { 850a40c4f10SYehuda Sadeh dout("__register_linger_request %p\n", req); 851a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 8526194ea89SSage Weil if (req->r_osd) 8536194ea89SSage Weil list_add_tail(&req->r_linger_osd, 8546194ea89SSage Weil &req->r_osd->o_linger_requests); 855a40c4f10SYehuda Sadeh } 856a40c4f10SYehuda Sadeh 857a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 858a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 859a40c4f10SYehuda Sadeh { 860a40c4f10SYehuda Sadeh dout("__unregister_linger_request %p\n", req); 861a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 86261c74035SAlex Elder if (req->r_osd) { 863a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_osd); 864a40c4f10SYehuda Sadeh 865a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 866a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 867a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 868a40c4f10SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 869a40c4f10SYehuda Sadeh } 870fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 871a40c4f10SYehuda Sadeh req->r_osd = NULL; 872a40c4f10SYehuda Sadeh } 873a40c4f10SYehuda Sadeh } 874a40c4f10SYehuda Sadeh 875a40c4f10SYehuda Sadeh void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, 876a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 877a40c4f10SYehuda Sadeh { 878a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 879a40c4f10SYehuda Sadeh if (req->r_linger) { 880a40c4f10SYehuda Sadeh __unregister_linger_request(osdc, req); 881a40c4f10SYehuda Sadeh ceph_osdc_put_request(req); 882a40c4f10SYehuda Sadeh } 883a40c4f10SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 884a40c4f10SYehuda Sadeh } 885a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); 886a40c4f10SYehuda Sadeh 887a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 888a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 889a40c4f10SYehuda Sadeh { 890a40c4f10SYehuda Sadeh if (!req->r_linger) { 891a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 892a40c4f10SYehuda Sadeh req->r_linger = 1; 893a40c4f10SYehuda Sadeh /* 894a40c4f10SYehuda Sadeh * caller is now responsible for calling 895a40c4f10SYehuda Sadeh * unregister_linger_request 896a40c4f10SYehuda Sadeh */ 897a40c4f10SYehuda Sadeh ceph_osdc_get_request(req); 898a40c4f10SYehuda Sadeh } 899a40c4f10SYehuda Sadeh } 900a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 901a40c4f10SYehuda Sadeh 9023d14c5d2SYehuda Sadeh /* 9033d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 9043d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 90525985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 9066f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 9073d14c5d2SYehuda Sadeh * 9083d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 9093d14c5d2SYehuda Sadeh * 9103d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 9113d14c5d2SYehuda Sadeh */ 9126f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 91338d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 9143d14c5d2SYehuda Sadeh { 9153d14c5d2SYehuda Sadeh struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base; 9163d14c5d2SYehuda Sadeh struct ceph_pg pgid; 9173d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 9183d14c5d2SYehuda Sadeh int o = -1, num = 0; 9193d14c5d2SYehuda Sadeh int err; 9203d14c5d2SYehuda Sadeh 9216f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 9223d14c5d2SYehuda Sadeh err = ceph_calc_object_layout(&reqhead->layout, req->r_oid, 9233d14c5d2SYehuda Sadeh &req->r_file_layout, osdc->osdmap); 9246f6c7006SSage Weil if (err) { 9256f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 9263d14c5d2SYehuda Sadeh return err; 9276f6c7006SSage Weil } 9283d14c5d2SYehuda Sadeh pgid = reqhead->layout.ol_pgid; 9293d14c5d2SYehuda Sadeh req->r_pgid = pgid; 9303d14c5d2SYehuda Sadeh 9313d14c5d2SYehuda Sadeh err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); 9323d14c5d2SYehuda Sadeh if (err > 0) { 9333d14c5d2SYehuda Sadeh o = acting[0]; 9343d14c5d2SYehuda Sadeh num = err; 9353d14c5d2SYehuda Sadeh } 9363d14c5d2SYehuda Sadeh 93738d6453cSSage Weil if ((!force_resend && 93838d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 9393d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 9403d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 9413d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 9423d14c5d2SYehuda Sadeh (req->r_osd == NULL && o == -1)) 9433d14c5d2SYehuda Sadeh return 0; /* no change */ 9443d14c5d2SYehuda Sadeh 9456f6c7006SSage Weil dout("map_request tid %llu pgid %d.%x osd%d (was osd%d)\n", 9463d14c5d2SYehuda Sadeh req->r_tid, le32_to_cpu(pgid.pool), le16_to_cpu(pgid.ps), o, 9473d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 9483d14c5d2SYehuda Sadeh 9493d14c5d2SYehuda Sadeh /* record full pg acting set */ 9503d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 9513d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 9523d14c5d2SYehuda Sadeh 9533d14c5d2SYehuda Sadeh if (req->r_osd) { 9543d14c5d2SYehuda Sadeh __cancel_request(req); 9553d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 9563d14c5d2SYehuda Sadeh req->r_osd = NULL; 9573d14c5d2SYehuda Sadeh } 9583d14c5d2SYehuda Sadeh 9593d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 9603d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 9613d14c5d2SYehuda Sadeh err = -ENOMEM; 962e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 9636f6c7006SSage Weil if (!req->r_osd) { 9646f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 9653d14c5d2SYehuda Sadeh goto out; 9666f6c7006SSage Weil } 9673d14c5d2SYehuda Sadeh 9686f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 9693d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 9703d14c5d2SYehuda Sadeh 971b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 972b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 973b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 9743d14c5d2SYehuda Sadeh } 9753d14c5d2SYehuda Sadeh 9763d14c5d2SYehuda Sadeh if (req->r_osd) { 9773d14c5d2SYehuda Sadeh __remove_osd_from_lru(req->r_osd); 9783d14c5d2SYehuda Sadeh list_add(&req->r_osd_item, &req->r_osd->o_requests); 9796f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_unsent); 9806f6c7006SSage Weil } else { 9816f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 9823d14c5d2SYehuda Sadeh } 9833d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 9843d14c5d2SYehuda Sadeh 9853d14c5d2SYehuda Sadeh out: 9863d14c5d2SYehuda Sadeh return err; 9873d14c5d2SYehuda Sadeh } 9883d14c5d2SYehuda Sadeh 9893d14c5d2SYehuda Sadeh /* 9903d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 9913d14c5d2SYehuda Sadeh */ 99256e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 9933d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 9943d14c5d2SYehuda Sadeh { 9953d14c5d2SYehuda Sadeh struct ceph_osd_request_head *reqhead; 9963d14c5d2SYehuda Sadeh 9973d14c5d2SYehuda Sadeh dout("send_request %p tid %llu to osd%d flags %d\n", 9983d14c5d2SYehuda Sadeh req, req->r_tid, req->r_osd->o_osd, req->r_flags); 9993d14c5d2SYehuda Sadeh 10003d14c5d2SYehuda Sadeh reqhead = req->r_request->front.iov_base; 10013d14c5d2SYehuda Sadeh reqhead->osdmap_epoch = cpu_to_le32(osdc->osdmap->epoch); 10023d14c5d2SYehuda Sadeh reqhead->flags |= cpu_to_le32(req->r_flags); /* e.g., RETRY */ 10033d14c5d2SYehuda Sadeh reqhead->reassert_version = req->r_reassert_version; 10043d14c5d2SYehuda Sadeh 10053d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 10063d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 10073d14c5d2SYehuda Sadeh 10083d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 10093d14c5d2SYehuda Sadeh ceph_con_send(&req->r_osd->o_con, req->r_request); 10103d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 10113d14c5d2SYehuda Sadeh } 10123d14c5d2SYehuda Sadeh 10133d14c5d2SYehuda Sadeh /* 10146f6c7006SSage Weil * Send any requests in the queue (req_unsent). 10156f6c7006SSage Weil */ 10166f6c7006SSage Weil static void send_queued(struct ceph_osd_client *osdc) 10176f6c7006SSage Weil { 10186f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 10196f6c7006SSage Weil 10206f6c7006SSage Weil dout("send_queued\n"); 10216f6c7006SSage Weil mutex_lock(&osdc->request_mutex); 10226f6c7006SSage Weil list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) { 10236f6c7006SSage Weil __send_request(osdc, req); 10246f6c7006SSage Weil } 10256f6c7006SSage Weil mutex_unlock(&osdc->request_mutex); 10266f6c7006SSage Weil } 10276f6c7006SSage Weil 10286f6c7006SSage Weil /* 10293d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 10303d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 10313d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 10323d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 10333d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 10343d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 10353d14c5d2SYehuda Sadeh * there are no open requests). 10363d14c5d2SYehuda Sadeh */ 10373d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 10383d14c5d2SYehuda Sadeh { 10393d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 10403d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 104183aff95eSSage Weil struct ceph_osd_request *req; 10423d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10433d14c5d2SYehuda Sadeh unsigned long keepalive = 10443d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 10453d14c5d2SYehuda Sadeh struct list_head slow_osds; 10463d14c5d2SYehuda Sadeh dout("timeout\n"); 10473d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 10483d14c5d2SYehuda Sadeh 10493d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 10503d14c5d2SYehuda Sadeh 10513d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 10523d14c5d2SYehuda Sadeh 10533d14c5d2SYehuda Sadeh /* 10543d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 10553d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 10563d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 10573d14c5d2SYehuda Sadeh */ 10583d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 10593d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 10603d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 10613d14c5d2SYehuda Sadeh break; 10623d14c5d2SYehuda Sadeh 10633d14c5d2SYehuda Sadeh osd = req->r_osd; 10643d14c5d2SYehuda Sadeh BUG_ON(!osd); 10653d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 10663d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 10673d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 10683d14c5d2SYehuda Sadeh } 10693d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 10703d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 10713d14c5d2SYehuda Sadeh o_keepalive_item); 10723d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 10733d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 10743d14c5d2SYehuda Sadeh } 10753d14c5d2SYehuda Sadeh 10763d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 10773d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 10786f6c7006SSage Weil send_queued(osdc); 10793d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 10803d14c5d2SYehuda Sadeh } 10813d14c5d2SYehuda Sadeh 10823d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 10833d14c5d2SYehuda Sadeh { 10843d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 10853d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 10863d14c5d2SYehuda Sadeh osds_timeout_work.work); 10873d14c5d2SYehuda Sadeh unsigned long delay = 10883d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 10893d14c5d2SYehuda Sadeh 10903d14c5d2SYehuda Sadeh dout("osds timeout\n"); 10913d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1092aca420bcSSage Weil remove_old_osds(osdc); 10933d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 10943d14c5d2SYehuda Sadeh 10953d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 10963d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 10973d14c5d2SYehuda Sadeh } 10983d14c5d2SYehuda Sadeh 109925845472SSage Weil static void complete_request(struct ceph_osd_request *req) 110025845472SSage Weil { 110125845472SSage Weil if (req->r_safe_callback) 110225845472SSage Weil req->r_safe_callback(req, NULL); 110325845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 110425845472SSage Weil } 110525845472SSage Weil 11063d14c5d2SYehuda Sadeh /* 11073d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 11083d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 11093d14c5d2SYehuda Sadeh */ 11103d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 11113d14c5d2SYehuda Sadeh struct ceph_connection *con) 11123d14c5d2SYehuda Sadeh { 11133d14c5d2SYehuda Sadeh struct ceph_osd_reply_head *rhead = msg->front.iov_base; 11143d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 11153d14c5d2SYehuda Sadeh u64 tid; 11163d14c5d2SYehuda Sadeh int numops, object_len, flags; 11173d14c5d2SYehuda Sadeh s32 result; 11183d14c5d2SYehuda Sadeh 11193d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 11203d14c5d2SYehuda Sadeh if (msg->front.iov_len < sizeof(*rhead)) 11213d14c5d2SYehuda Sadeh goto bad; 11223d14c5d2SYehuda Sadeh numops = le32_to_cpu(rhead->num_ops); 11233d14c5d2SYehuda Sadeh object_len = le32_to_cpu(rhead->object_len); 11243d14c5d2SYehuda Sadeh result = le32_to_cpu(rhead->result); 11253d14c5d2SYehuda Sadeh if (msg->front.iov_len != sizeof(*rhead) + object_len + 11263d14c5d2SYehuda Sadeh numops * sizeof(struct ceph_osd_op)) 11273d14c5d2SYehuda Sadeh goto bad; 11283d14c5d2SYehuda Sadeh dout("handle_reply %p tid %llu result %d\n", msg, tid, (int)result); 11293d14c5d2SYehuda Sadeh /* lookup */ 11303d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 11313d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 11323d14c5d2SYehuda Sadeh if (req == NULL) { 11333d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 11343d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 11353d14c5d2SYehuda Sadeh return; 11363d14c5d2SYehuda Sadeh } 11373d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 11383d14c5d2SYehuda Sadeh flags = le32_to_cpu(rhead->flags); 11393d14c5d2SYehuda Sadeh 11403d14c5d2SYehuda Sadeh /* 11413d14c5d2SYehuda Sadeh * if this connection filled our message, drop our reference now, to 11423d14c5d2SYehuda Sadeh * avoid a (safe but slower) revoke later. 11433d14c5d2SYehuda Sadeh */ 11443d14c5d2SYehuda Sadeh if (req->r_con_filling_msg == con && req->r_reply == msg) { 11453d14c5d2SYehuda Sadeh dout(" dropping con_filling_msg ref %p\n", con); 11463d14c5d2SYehuda Sadeh req->r_con_filling_msg = NULL; 11470d47766fSSage Weil con->ops->put(con); 11483d14c5d2SYehuda Sadeh } 11493d14c5d2SYehuda Sadeh 11503d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 115195c96174SEric Dumazet unsigned int bytes; 11523d14c5d2SYehuda Sadeh 11533d14c5d2SYehuda Sadeh req->r_result = le32_to_cpu(rhead->result); 11543d14c5d2SYehuda Sadeh bytes = le32_to_cpu(msg->hdr.data_len); 11553d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 11563d14c5d2SYehuda Sadeh bytes); 11573d14c5d2SYehuda Sadeh if (req->r_result == 0) 11583d14c5d2SYehuda Sadeh req->r_result = bytes; 11593d14c5d2SYehuda Sadeh 11603d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 11613d14c5d2SYehuda Sadeh req->r_reassert_version = rhead->reassert_version; 11623d14c5d2SYehuda Sadeh 11633d14c5d2SYehuda Sadeh req->r_got_reply = 1; 11643d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 11653d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 11663d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 11673d14c5d2SYehuda Sadeh goto done; 11683d14c5d2SYehuda Sadeh } 11693d14c5d2SYehuda Sadeh 11703d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 11713d14c5d2SYehuda Sadeh 1172a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1173a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1174a40c4f10SYehuda Sadeh 11753d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 11763d14c5d2SYehuda Sadeh if (result < 0 || 11773d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 11783d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 11793d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 11803d14c5d2SYehuda Sadeh 11813d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 11823d14c5d2SYehuda Sadeh 11833d14c5d2SYehuda Sadeh if (req->r_callback) 11843d14c5d2SYehuda Sadeh req->r_callback(req, msg); 11853d14c5d2SYehuda Sadeh else 11863d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 11873d14c5d2SYehuda Sadeh 118825845472SSage Weil if (flags & CEPH_OSD_FLAG_ONDISK) 118925845472SSage Weil complete_request(req); 11903d14c5d2SYehuda Sadeh 11913d14c5d2SYehuda Sadeh done: 1192a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 11933d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 11943d14c5d2SYehuda Sadeh return; 11953d14c5d2SYehuda Sadeh 11963d14c5d2SYehuda Sadeh bad: 11973d14c5d2SYehuda Sadeh pr_err("corrupt osd_op_reply got %d %d expected %d\n", 11983d14c5d2SYehuda Sadeh (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len), 11993d14c5d2SYehuda Sadeh (int)sizeof(*rhead)); 12003d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 12013d14c5d2SYehuda Sadeh } 12023d14c5d2SYehuda Sadeh 12036f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 12043d14c5d2SYehuda Sadeh { 12053d14c5d2SYehuda Sadeh struct rb_node *p, *n; 12063d14c5d2SYehuda Sadeh 12073d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 12086f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 12093d14c5d2SYehuda Sadeh 12103d14c5d2SYehuda Sadeh n = rb_next(p); 12113d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 12123d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 12133d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 12143d14c5d2SYehuda Sadeh osd->o_osd), 12153d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 12163d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 12173d14c5d2SYehuda Sadeh } 12183d14c5d2SYehuda Sadeh } 12193d14c5d2SYehuda Sadeh 12203d14c5d2SYehuda Sadeh /* 12216f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 12226f6c7006SSage Weil * no osd, request a new map. 12233d14c5d2SYehuda Sadeh * 1224e6d50f67SAlex Elder * Caller should hold map_sem for read. 12253d14c5d2SYehuda Sadeh */ 122638d6453cSSage Weil static void kick_requests(struct ceph_osd_client *osdc, int force_resend) 12273d14c5d2SYehuda Sadeh { 1228a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 12296f6c7006SSage Weil struct rb_node *p; 12306f6c7006SSage Weil int needmap = 0; 12316f6c7006SSage Weil int err; 12323d14c5d2SYehuda Sadeh 123338d6453cSSage Weil dout("kick_requests %s\n", force_resend ? " (force resend)" : ""); 12343d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 12356194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 12366f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 12376194ea89SSage Weil p = rb_next(p); 1238ab60b16dSAlex Elder 1239ab60b16dSAlex Elder /* 1240ab60b16dSAlex Elder * For linger requests that have not yet been 1241ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1242ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1243ab60b16dSAlex Elder * the request before re-registering it as a linger 1244ab60b16dSAlex Elder * request to ensure the __map_request() below 1245ab60b16dSAlex Elder * will decide it needs to be sent. 1246ab60b16dSAlex Elder */ 1247ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1248ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1249ab60b16dSAlex Elder req, req->r_tid, 1250ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 1251ab60b16dSAlex Elder __unregister_request(osdc, req); 1252ab60b16dSAlex Elder __register_linger_request(osdc, req); 1253ab60b16dSAlex Elder continue; 1254ab60b16dSAlex Elder } 1255ab60b16dSAlex Elder 125638d6453cSSage Weil err = __map_request(osdc, req, force_resend); 12576f6c7006SSage Weil if (err < 0) 12586f6c7006SSage Weil continue; /* error */ 12596f6c7006SSage Weil if (req->r_osd == NULL) { 12606f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 12616f6c7006SSage Weil needmap++; /* request a newer map */ 12626f6c7006SSage Weil } else if (err > 0) { 12636194ea89SSage Weil if (!req->r_linger) { 12646194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 12656194ea89SSage Weil req->r_tid, 12666f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 12676f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 12686f6c7006SSage Weil } 12696f6c7006SSage Weil } 12706194ea89SSage Weil } 1271a40c4f10SYehuda Sadeh 1272a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 1273a40c4f10SYehuda Sadeh r_linger_item) { 1274a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 1275a40c4f10SYehuda Sadeh 127638d6453cSSage Weil err = __map_request(osdc, req, force_resend); 1277ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 1278a40c4f10SYehuda Sadeh if (err == 0) 1279a40c4f10SYehuda Sadeh continue; /* no change and no osd was specified */ 1280a40c4f10SYehuda Sadeh if (err < 0) 1281a40c4f10SYehuda Sadeh continue; /* hrm! */ 1282a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 1283a40c4f10SYehuda Sadeh dout("tid %llu maps to no valid osd\n", req->r_tid); 1284a40c4f10SYehuda Sadeh needmap++; /* request a newer map */ 1285a40c4f10SYehuda Sadeh continue; 1286a40c4f10SYehuda Sadeh } 1287a40c4f10SYehuda Sadeh 1288a40c4f10SYehuda Sadeh dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, 1289a40c4f10SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 1290a40c4f10SYehuda Sadeh __register_request(osdc, req); 1291c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 1292a40c4f10SYehuda Sadeh } 12933d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 12943d14c5d2SYehuda Sadeh 12953d14c5d2SYehuda Sadeh if (needmap) { 12963d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 12973d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 12983d14c5d2SYehuda Sadeh } 1299e6d50f67SAlex Elder reset_changed_osds(osdc); 13003d14c5d2SYehuda Sadeh } 13016f6c7006SSage Weil 13026f6c7006SSage Weil 13033d14c5d2SYehuda Sadeh /* 13043d14c5d2SYehuda Sadeh * Process updated osd map. 13053d14c5d2SYehuda Sadeh * 13063d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 13073d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 13083d14c5d2SYehuda Sadeh * off to different OSDs as needed. 13093d14c5d2SYehuda Sadeh */ 13103d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 13113d14c5d2SYehuda Sadeh { 13123d14c5d2SYehuda Sadeh void *p, *end, *next; 13133d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 13143d14c5d2SYehuda Sadeh u32 epoch; 13153d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 13163d14c5d2SYehuda Sadeh int err; 13173d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 13183d14c5d2SYehuda Sadeh 13193d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 13203d14c5d2SYehuda Sadeh p = msg->front.iov_base; 13213d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 13223d14c5d2SYehuda Sadeh 13233d14c5d2SYehuda Sadeh /* verify fsid */ 13243d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 13253d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 13263d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 13273d14c5d2SYehuda Sadeh return; 13283d14c5d2SYehuda Sadeh 13293d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 13303d14c5d2SYehuda Sadeh 13313d14c5d2SYehuda Sadeh /* incremental maps */ 13323d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 13333d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 13343d14c5d2SYehuda Sadeh while (nr_maps > 0) { 13353d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 13363d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 13373d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 13383d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 13393d14c5d2SYehuda Sadeh next = p + maplen; 13403d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 13413d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 13423d14c5d2SYehuda Sadeh epoch, maplen); 13433d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 13443d14c5d2SYehuda Sadeh osdc->osdmap, 134515d9882cSAlex Elder &osdc->client->msgr); 13463d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 13473d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 13483d14c5d2SYehuda Sadeh goto bad; 13493d14c5d2SYehuda Sadeh } 13503d14c5d2SYehuda Sadeh BUG_ON(!newmap); 13513d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 13523d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 13533d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 13543d14c5d2SYehuda Sadeh } 135538d6453cSSage Weil kick_requests(osdc, 0); 13563d14c5d2SYehuda Sadeh } else { 13573d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 13583d14c5d2SYehuda Sadeh epoch, maplen); 13593d14c5d2SYehuda Sadeh } 13603d14c5d2SYehuda Sadeh p = next; 13613d14c5d2SYehuda Sadeh nr_maps--; 13623d14c5d2SYehuda Sadeh } 13633d14c5d2SYehuda Sadeh if (newmap) 13643d14c5d2SYehuda Sadeh goto done; 13653d14c5d2SYehuda Sadeh 13663d14c5d2SYehuda Sadeh /* full maps */ 13673d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 13683d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 13693d14c5d2SYehuda Sadeh while (nr_maps) { 13703d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 13713d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 13723d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 13733d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 13743d14c5d2SYehuda Sadeh if (nr_maps > 1) { 13753d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 13763d14c5d2SYehuda Sadeh epoch, maplen); 13773d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 13783d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 13793d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 13803d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 13813d14c5d2SYehuda Sadeh } else { 138238d6453cSSage Weil int skipped_map = 0; 138338d6453cSSage Weil 13843d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 13853d14c5d2SYehuda Sadeh newmap = osdmap_decode(&p, p+maplen); 13863d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 13873d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 13883d14c5d2SYehuda Sadeh goto bad; 13893d14c5d2SYehuda Sadeh } 13903d14c5d2SYehuda Sadeh BUG_ON(!newmap); 13913d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 13923d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 139338d6453cSSage Weil if (oldmap) { 139438d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 139538d6453cSSage Weil skipped_map = 1; 13963d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 139738d6453cSSage Weil } 139838d6453cSSage Weil kick_requests(osdc, skipped_map); 13993d14c5d2SYehuda Sadeh } 14003d14c5d2SYehuda Sadeh p += maplen; 14013d14c5d2SYehuda Sadeh nr_maps--; 14023d14c5d2SYehuda Sadeh } 14033d14c5d2SYehuda Sadeh 14043d14c5d2SYehuda Sadeh done: 14053d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 14063d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 1407cd634fb6SSage Weil 1408cd634fb6SSage Weil /* 1409cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 1410cd634fb6SSage Weil * we find out when we are no longer full and stop returning 1411cd634fb6SSage Weil * ENOSPC. 1412cd634fb6SSage Weil */ 1413cd634fb6SSage Weil if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) 1414cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 1415cd634fb6SSage Weil 14166f6c7006SSage Weil send_queued(osdc); 14173d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 14183d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 14193d14c5d2SYehuda Sadeh return; 14203d14c5d2SYehuda Sadeh 14213d14c5d2SYehuda Sadeh bad: 14223d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 14233d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 14243d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 14253d14c5d2SYehuda Sadeh return; 14263d14c5d2SYehuda Sadeh } 14273d14c5d2SYehuda Sadeh 14283d14c5d2SYehuda Sadeh /* 1429a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 1430a40c4f10SYehuda Sadeh * 1431a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 1432a40c4f10SYehuda Sadeh */ 1433a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 1434a40c4f10SYehuda Sadeh { 1435a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 1436a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 1437a40c4f10SYehuda Sadeh 1438a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 1439a40c4f10SYehuda Sadeh kfree(event); 1440a40c4f10SYehuda Sadeh } 1441a40c4f10SYehuda Sadeh 1442a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 1443a40c4f10SYehuda Sadeh { 1444a40c4f10SYehuda Sadeh kref_get(&event->kref); 1445a40c4f10SYehuda Sadeh } 1446a40c4f10SYehuda Sadeh 1447a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 1448a40c4f10SYehuda Sadeh { 1449a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 1450a40c4f10SYehuda Sadeh } 1451a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 1452a40c4f10SYehuda Sadeh 1453a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 1454a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 1455a40c4f10SYehuda Sadeh { 1456a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1457a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1458a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1459a40c4f10SYehuda Sadeh 1460a40c4f10SYehuda Sadeh while (*p) { 1461a40c4f10SYehuda Sadeh parent = *p; 1462a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1463a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 1464a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1465a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 1466a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1467a40c4f10SYehuda Sadeh else 1468a40c4f10SYehuda Sadeh BUG(); 1469a40c4f10SYehuda Sadeh } 1470a40c4f10SYehuda Sadeh 1471a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 1472a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 1473a40c4f10SYehuda Sadeh } 1474a40c4f10SYehuda Sadeh 1475a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 1476a40c4f10SYehuda Sadeh u64 cookie) 1477a40c4f10SYehuda Sadeh { 1478a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1479a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1480a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1481a40c4f10SYehuda Sadeh 1482a40c4f10SYehuda Sadeh while (*p) { 1483a40c4f10SYehuda Sadeh parent = *p; 1484a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1485a40c4f10SYehuda Sadeh if (cookie < event->cookie) 1486a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1487a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 1488a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1489a40c4f10SYehuda Sadeh else 1490a40c4f10SYehuda Sadeh return event; 1491a40c4f10SYehuda Sadeh } 1492a40c4f10SYehuda Sadeh return NULL; 1493a40c4f10SYehuda Sadeh } 1494a40c4f10SYehuda Sadeh 1495a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 1496a40c4f10SYehuda Sadeh { 1497a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1498a40c4f10SYehuda Sadeh 1499a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 1500a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 1501a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 1502a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1503a40c4f10SYehuda Sadeh } else { 1504a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 1505a40c4f10SYehuda Sadeh } 1506a40c4f10SYehuda Sadeh } 1507a40c4f10SYehuda Sadeh 1508a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 1509a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 1510a40c4f10SYehuda Sadeh int one_shot, void *data, 1511a40c4f10SYehuda Sadeh struct ceph_osd_event **pevent) 1512a40c4f10SYehuda Sadeh { 1513a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1514a40c4f10SYehuda Sadeh 1515a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 1516a40c4f10SYehuda Sadeh if (!event) 1517a40c4f10SYehuda Sadeh return -ENOMEM; 1518a40c4f10SYehuda Sadeh 1519a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 1520a40c4f10SYehuda Sadeh event->cb = event_cb; 1521a40c4f10SYehuda Sadeh event->one_shot = one_shot; 1522a40c4f10SYehuda Sadeh event->data = data; 1523a40c4f10SYehuda Sadeh event->osdc = osdc; 1524a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 15253ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 1526a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 1527a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 1528a40c4f10SYehuda Sadeh init_completion(&event->completion); 1529a40c4f10SYehuda Sadeh 1530a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1531a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 1532a40c4f10SYehuda Sadeh __insert_event(osdc, event); 1533a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1534a40c4f10SYehuda Sadeh 1535a40c4f10SYehuda Sadeh *pevent = event; 1536a40c4f10SYehuda Sadeh return 0; 1537a40c4f10SYehuda Sadeh } 1538a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 1539a40c4f10SYehuda Sadeh 1540a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 1541a40c4f10SYehuda Sadeh { 1542a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1543a40c4f10SYehuda Sadeh 1544a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 1545a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1546a40c4f10SYehuda Sadeh __remove_event(event); 1547a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1548a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 1549a40c4f10SYehuda Sadeh } 1550a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 1551a40c4f10SYehuda Sadeh 1552a40c4f10SYehuda Sadeh 1553a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 1554a40c4f10SYehuda Sadeh { 1555a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 1556a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 1557a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 1558a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 1559a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 1560a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 1561a40c4f10SYehuda Sadeh 1562a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 1563a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 1564a40c4f10SYehuda Sadeh complete(&event->completion); 1565a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 1566a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1567a40c4f10SYehuda Sadeh kfree(event_work); 1568a40c4f10SYehuda Sadeh } 1569a40c4f10SYehuda Sadeh 1570a40c4f10SYehuda Sadeh 1571a40c4f10SYehuda Sadeh /* 1572a40c4f10SYehuda Sadeh * Process osd watch notifications 1573a40c4f10SYehuda Sadeh */ 1574a40c4f10SYehuda Sadeh void handle_watch_notify(struct ceph_osd_client *osdc, struct ceph_msg *msg) 1575a40c4f10SYehuda Sadeh { 1576a40c4f10SYehuda Sadeh void *p, *end; 1577a40c4f10SYehuda Sadeh u8 proto_ver; 1578a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 1579a40c4f10SYehuda Sadeh u8 opcode; 1580a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1581a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 1582a40c4f10SYehuda Sadeh 1583a40c4f10SYehuda Sadeh p = msg->front.iov_base; 1584a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 1585a40c4f10SYehuda Sadeh 1586a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 1587a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 1588a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 1589a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 1590a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 1591a40c4f10SYehuda Sadeh 1592a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1593a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 1594a40c4f10SYehuda Sadeh if (event) { 1595a40c4f10SYehuda Sadeh get_event(event); 1596a40c4f10SYehuda Sadeh if (event->one_shot) 1597a40c4f10SYehuda Sadeh __remove_event(event); 1598a40c4f10SYehuda Sadeh } 1599a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1600a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 1601a40c4f10SYehuda Sadeh cookie, ver, event); 1602a40c4f10SYehuda Sadeh if (event) { 1603a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 1604a40c4f10SYehuda Sadeh if (!event_work) { 1605a40c4f10SYehuda Sadeh dout("ERROR: could not allocate event_work\n"); 1606a40c4f10SYehuda Sadeh goto done_err; 1607a40c4f10SYehuda Sadeh } 16086b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 1609a40c4f10SYehuda Sadeh event_work->event = event; 1610a40c4f10SYehuda Sadeh event_work->ver = ver; 1611a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 1612a40c4f10SYehuda Sadeh event_work->opcode = opcode; 1613a40c4f10SYehuda Sadeh if (!queue_work(osdc->notify_wq, &event_work->work)) { 1614a40c4f10SYehuda Sadeh dout("WARNING: failed to queue notify event work\n"); 1615a40c4f10SYehuda Sadeh goto done_err; 1616a40c4f10SYehuda Sadeh } 1617a40c4f10SYehuda Sadeh } 1618a40c4f10SYehuda Sadeh 1619a40c4f10SYehuda Sadeh return; 1620a40c4f10SYehuda Sadeh 1621a40c4f10SYehuda Sadeh done_err: 1622a40c4f10SYehuda Sadeh complete(&event->completion); 1623a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1624a40c4f10SYehuda Sadeh return; 1625a40c4f10SYehuda Sadeh 1626a40c4f10SYehuda Sadeh bad: 1627a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 1628a40c4f10SYehuda Sadeh return; 1629a40c4f10SYehuda Sadeh } 1630a40c4f10SYehuda Sadeh 1631a40c4f10SYehuda Sadeh int ceph_osdc_wait_event(struct ceph_osd_event *event, unsigned long timeout) 1632a40c4f10SYehuda Sadeh { 1633a40c4f10SYehuda Sadeh int err; 1634a40c4f10SYehuda Sadeh 1635a40c4f10SYehuda Sadeh dout("wait_event %p\n", event); 1636a40c4f10SYehuda Sadeh err = wait_for_completion_interruptible_timeout(&event->completion, 1637a40c4f10SYehuda Sadeh timeout * HZ); 1638a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1639a40c4f10SYehuda Sadeh if (err > 0) 1640a40c4f10SYehuda Sadeh err = 0; 1641a40c4f10SYehuda Sadeh dout("wait_event %p returns %d\n", event, err); 1642a40c4f10SYehuda Sadeh return err; 1643a40c4f10SYehuda Sadeh } 1644a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_event); 1645a40c4f10SYehuda Sadeh 1646a40c4f10SYehuda Sadeh /* 16473d14c5d2SYehuda Sadeh * Register request, send initial attempt. 16483d14c5d2SYehuda Sadeh */ 16493d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 16503d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 16513d14c5d2SYehuda Sadeh bool nofail) 16523d14c5d2SYehuda Sadeh { 16533d14c5d2SYehuda Sadeh int rc = 0; 16543d14c5d2SYehuda Sadeh 16553d14c5d2SYehuda Sadeh req->r_request->pages = req->r_pages; 16563d14c5d2SYehuda Sadeh req->r_request->nr_pages = req->r_num_pages; 16573d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 16583d14c5d2SYehuda Sadeh req->r_request->bio = req->r_bio; 16593d14c5d2SYehuda Sadeh #endif 1660c885837fSAlex Elder req->r_request->trail = &req->r_trail; 16613d14c5d2SYehuda Sadeh 16623d14c5d2SYehuda Sadeh register_request(osdc, req); 16633d14c5d2SYehuda Sadeh 16643d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 16653d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 16663d14c5d2SYehuda Sadeh /* 16673d14c5d2SYehuda Sadeh * a racing kick_requests() may have sent the message for us 16683d14c5d2SYehuda Sadeh * while we dropped request_mutex above, so only send now if 16693d14c5d2SYehuda Sadeh * the request still han't been touched yet. 16703d14c5d2SYehuda Sadeh */ 16713d14c5d2SYehuda Sadeh if (req->r_sent == 0) { 167238d6453cSSage Weil rc = __map_request(osdc, req, 0); 16739d6fcb08SSage Weil if (rc < 0) { 16749d6fcb08SSage Weil if (nofail) { 16759d6fcb08SSage Weil dout("osdc_start_request failed map, " 16769d6fcb08SSage Weil " will retry %lld\n", req->r_tid); 16779d6fcb08SSage Weil rc = 0; 16789d6fcb08SSage Weil } 1679234af26fSDan Carpenter goto out_unlock; 16809d6fcb08SSage Weil } 16816f6c7006SSage Weil if (req->r_osd == NULL) { 16826f6c7006SSage Weil dout("send_request %p no up osds in pg\n", req); 16836f6c7006SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 16846f6c7006SSage Weil } else { 168556e925b6SSage Weil __send_request(osdc, req); 168656e925b6SSage Weil } 16873d14c5d2SYehuda Sadeh rc = 0; 16886f6c7006SSage Weil } 1689234af26fSDan Carpenter 1690234af26fSDan Carpenter out_unlock: 16913d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 16923d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16933d14c5d2SYehuda Sadeh return rc; 16943d14c5d2SYehuda Sadeh } 16953d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 16963d14c5d2SYehuda Sadeh 16973d14c5d2SYehuda Sadeh /* 16983d14c5d2SYehuda Sadeh * wait for a request to complete 16993d14c5d2SYehuda Sadeh */ 17003d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 17013d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 17023d14c5d2SYehuda Sadeh { 17033d14c5d2SYehuda Sadeh int rc; 17043d14c5d2SYehuda Sadeh 17053d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 17063d14c5d2SYehuda Sadeh if (rc < 0) { 17073d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 17083d14c5d2SYehuda Sadeh __cancel_request(req); 17093d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 17103d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 171125845472SSage Weil complete_request(req); 17123d14c5d2SYehuda Sadeh dout("wait_request tid %llu canceled/timed out\n", req->r_tid); 17133d14c5d2SYehuda Sadeh return rc; 17143d14c5d2SYehuda Sadeh } 17153d14c5d2SYehuda Sadeh 17163d14c5d2SYehuda Sadeh dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); 17173d14c5d2SYehuda Sadeh return req->r_result; 17183d14c5d2SYehuda Sadeh } 17193d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 17203d14c5d2SYehuda Sadeh 17213d14c5d2SYehuda Sadeh /* 17223d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 17233d14c5d2SYehuda Sadeh */ 17243d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 17253d14c5d2SYehuda Sadeh { 17263d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 17273d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 17283d14c5d2SYehuda Sadeh 17293d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 17303d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 17313d14c5d2SYehuda Sadeh while (1) { 17323d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 17333d14c5d2SYehuda Sadeh if (!req) 17343d14c5d2SYehuda Sadeh break; 17353d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 17363d14c5d2SYehuda Sadeh break; 17373d14c5d2SYehuda Sadeh 17383d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 17393d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 17403d14c5d2SYehuda Sadeh continue; 17413d14c5d2SYehuda Sadeh 17423d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 17433d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 17443d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 17453d14c5d2SYehuda Sadeh req->r_tid, last_tid); 17463d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 17473d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 17483d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 17493d14c5d2SYehuda Sadeh } 17503d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 17513d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 17523d14c5d2SYehuda Sadeh } 17533d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 17543d14c5d2SYehuda Sadeh 17553d14c5d2SYehuda Sadeh /* 17563d14c5d2SYehuda Sadeh * init, shutdown 17573d14c5d2SYehuda Sadeh */ 17583d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 17593d14c5d2SYehuda Sadeh { 17603d14c5d2SYehuda Sadeh int err; 17613d14c5d2SYehuda Sadeh 17623d14c5d2SYehuda Sadeh dout("init\n"); 17633d14c5d2SYehuda Sadeh osdc->client = client; 17643d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 17653d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 17663d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 17673d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 17683d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 17693d14c5d2SYehuda Sadeh osdc->last_tid = 0; 17703d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 17713d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 17723d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 17733d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 17746f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 17756f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 1776a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 17773d14c5d2SYehuda Sadeh osdc->num_requests = 0; 17783d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 17793d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 1780a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 1781a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 1782a40c4f10SYehuda Sadeh osdc->event_count = 0; 17833d14c5d2SYehuda Sadeh 17843d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 17853d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 17863d14c5d2SYehuda Sadeh 17873d14c5d2SYehuda Sadeh err = -ENOMEM; 17883d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 17893d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 17903d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 17913d14c5d2SYehuda Sadeh goto out; 17923d14c5d2SYehuda Sadeh 1793d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 1794d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 17953d14c5d2SYehuda Sadeh "osd_op"); 17963d14c5d2SYehuda Sadeh if (err < 0) 17973d14c5d2SYehuda Sadeh goto out_mempool; 1798d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 17993d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 18003d14c5d2SYehuda Sadeh "osd_op_reply"); 18013d14c5d2SYehuda Sadeh if (err < 0) 18023d14c5d2SYehuda Sadeh goto out_msgpool; 1803a40c4f10SYehuda Sadeh 1804a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 1805a40c4f10SYehuda Sadeh if (IS_ERR(osdc->notify_wq)) { 1806a40c4f10SYehuda Sadeh err = PTR_ERR(osdc->notify_wq); 1807a40c4f10SYehuda Sadeh osdc->notify_wq = NULL; 1808a40c4f10SYehuda Sadeh goto out_msgpool; 1809a40c4f10SYehuda Sadeh } 18103d14c5d2SYehuda Sadeh return 0; 18113d14c5d2SYehuda Sadeh 18123d14c5d2SYehuda Sadeh out_msgpool: 18133d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 18143d14c5d2SYehuda Sadeh out_mempool: 18153d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 18163d14c5d2SYehuda Sadeh out: 18173d14c5d2SYehuda Sadeh return err; 18183d14c5d2SYehuda Sadeh } 18193d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_init); 18203d14c5d2SYehuda Sadeh 18213d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 18223d14c5d2SYehuda Sadeh { 1823a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 1824a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 18253d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 18263d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 18273d14c5d2SYehuda Sadeh if (osdc->osdmap) { 18283d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 18293d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 18303d14c5d2SYehuda Sadeh } 1831aca420bcSSage Weil remove_all_osds(osdc); 18323d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 18333d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 18343d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 18353d14c5d2SYehuda Sadeh } 18363d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_stop); 18373d14c5d2SYehuda Sadeh 18383d14c5d2SYehuda Sadeh /* 18393d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 18403d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 18413d14c5d2SYehuda Sadeh */ 18423d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 18433d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 18443d14c5d2SYehuda Sadeh u64 off, u64 *plen, 18453d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 1846b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 18473d14c5d2SYehuda Sadeh { 18483d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 18493d14c5d2SYehuda Sadeh int rc = 0; 18503d14c5d2SYehuda Sadeh 18513d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 18523d14c5d2SYehuda Sadeh vino.snap, off, *plen); 18533d14c5d2SYehuda Sadeh req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 18543d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 18553d14c5d2SYehuda Sadeh NULL, 0, truncate_seq, truncate_size, NULL, 1856b7495fc2SSage Weil false, 1, page_align); 18576816282dSSage Weil if (IS_ERR(req)) 18586816282dSSage Weil return PTR_ERR(req); 18593d14c5d2SYehuda Sadeh 18603d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 18613d14c5d2SYehuda Sadeh req->r_pages = pages; 18623d14c5d2SYehuda Sadeh 1863b7495fc2SSage Weil dout("readpages final extent is %llu~%llu (%d pages align %d)\n", 1864b7495fc2SSage Weil off, *plen, req->r_num_pages, page_align); 18653d14c5d2SYehuda Sadeh 18663d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 18673d14c5d2SYehuda Sadeh if (!rc) 18683d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 18693d14c5d2SYehuda Sadeh 18703d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 18713d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 18723d14c5d2SYehuda Sadeh return rc; 18733d14c5d2SYehuda Sadeh } 18743d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 18753d14c5d2SYehuda Sadeh 18763d14c5d2SYehuda Sadeh /* 18773d14c5d2SYehuda Sadeh * do a synchronous write on N pages 18783d14c5d2SYehuda Sadeh */ 18793d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 18803d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 18813d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 18823d14c5d2SYehuda Sadeh u64 off, u64 len, 18833d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 18843d14c5d2SYehuda Sadeh struct timespec *mtime, 18853d14c5d2SYehuda Sadeh struct page **pages, int num_pages, 18863d14c5d2SYehuda Sadeh int flags, int do_sync, bool nofail) 18873d14c5d2SYehuda Sadeh { 18883d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 18893d14c5d2SYehuda Sadeh int rc = 0; 1890b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 18913d14c5d2SYehuda Sadeh 18923d14c5d2SYehuda Sadeh BUG_ON(vino.snap != CEPH_NOSNAP); 18933d14c5d2SYehuda Sadeh req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 18943d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 18953d14c5d2SYehuda Sadeh flags | CEPH_OSD_FLAG_ONDISK | 18963d14c5d2SYehuda Sadeh CEPH_OSD_FLAG_WRITE, 18973d14c5d2SYehuda Sadeh snapc, do_sync, 18983d14c5d2SYehuda Sadeh truncate_seq, truncate_size, mtime, 1899b7495fc2SSage Weil nofail, 1, page_align); 19006816282dSSage Weil if (IS_ERR(req)) 19016816282dSSage Weil return PTR_ERR(req); 19023d14c5d2SYehuda Sadeh 19033d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 19043d14c5d2SYehuda Sadeh req->r_pages = pages; 19053d14c5d2SYehuda Sadeh dout("writepages %llu~%llu (%d pages)\n", off, len, 19063d14c5d2SYehuda Sadeh req->r_num_pages); 19073d14c5d2SYehuda Sadeh 19083d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, nofail); 19093d14c5d2SYehuda Sadeh if (!rc) 19103d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 19113d14c5d2SYehuda Sadeh 19123d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 19133d14c5d2SYehuda Sadeh if (rc == 0) 19143d14c5d2SYehuda Sadeh rc = len; 19153d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 19163d14c5d2SYehuda Sadeh return rc; 19173d14c5d2SYehuda Sadeh } 19183d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 19193d14c5d2SYehuda Sadeh 19203d14c5d2SYehuda Sadeh /* 19213d14c5d2SYehuda Sadeh * handle incoming message 19223d14c5d2SYehuda Sadeh */ 19233d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 19243d14c5d2SYehuda Sadeh { 19253d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 19263d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 19273d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 19283d14c5d2SYehuda Sadeh 19293d14c5d2SYehuda Sadeh if (!osd) 19303d14c5d2SYehuda Sadeh goto out; 19313d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 19323d14c5d2SYehuda Sadeh 19333d14c5d2SYehuda Sadeh switch (type) { 19343d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 19353d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 19363d14c5d2SYehuda Sadeh break; 19373d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 19383d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 19393d14c5d2SYehuda Sadeh break; 1940a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 1941a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 1942a40c4f10SYehuda Sadeh break; 19433d14c5d2SYehuda Sadeh 19443d14c5d2SYehuda Sadeh default: 19453d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 19463d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 19473d14c5d2SYehuda Sadeh } 19483d14c5d2SYehuda Sadeh out: 19493d14c5d2SYehuda Sadeh ceph_msg_put(msg); 19503d14c5d2SYehuda Sadeh } 19513d14c5d2SYehuda Sadeh 19523d14c5d2SYehuda Sadeh /* 19533d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 19543d14c5d2SYehuda Sadeh * pages. 19553d14c5d2SYehuda Sadeh */ 19563d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 19573d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 19583d14c5d2SYehuda Sadeh int *skip) 19593d14c5d2SYehuda Sadeh { 19603d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 19613d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 19623d14c5d2SYehuda Sadeh struct ceph_msg *m; 19633d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 19643d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 19653d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 19663d14c5d2SYehuda Sadeh u64 tid; 19673d14c5d2SYehuda Sadeh 19683d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 19693d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19703d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 19713d14c5d2SYehuda Sadeh if (!req) { 19723d14c5d2SYehuda Sadeh *skip = 1; 19733d14c5d2SYehuda Sadeh m = NULL; 1974756a16a5SSage Weil dout("get_reply unknown tid %llu from osd%d\n", tid, 19753d14c5d2SYehuda Sadeh osd->o_osd); 19763d14c5d2SYehuda Sadeh goto out; 19773d14c5d2SYehuda Sadeh } 19783d14c5d2SYehuda Sadeh 19793d14c5d2SYehuda Sadeh if (req->r_con_filling_msg) { 19808921d114SAlex Elder dout("%s revoking msg %p from old con %p\n", __func__, 19813d14c5d2SYehuda Sadeh req->r_reply, req->r_con_filling_msg); 19828921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 19830d47766fSSage Weil req->r_con_filling_msg->ops->put(req->r_con_filling_msg); 19843d14c5d2SYehuda Sadeh req->r_con_filling_msg = NULL; 19853d14c5d2SYehuda Sadeh } 19863d14c5d2SYehuda Sadeh 19873d14c5d2SYehuda Sadeh if (front > req->r_reply->front.iov_len) { 19883d14c5d2SYehuda Sadeh pr_warning("get_reply front %d > preallocated %d\n", 19893d14c5d2SYehuda Sadeh front, (int)req->r_reply->front.iov_len); 1990b61c2763SSage Weil m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false); 19913d14c5d2SYehuda Sadeh if (!m) 19923d14c5d2SYehuda Sadeh goto out; 19933d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 19943d14c5d2SYehuda Sadeh req->r_reply = m; 19953d14c5d2SYehuda Sadeh } 19963d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 19973d14c5d2SYehuda Sadeh 19983d14c5d2SYehuda Sadeh if (data_len > 0) { 1999b7495fc2SSage Weil int want = calc_pages_for(req->r_page_alignment, data_len); 20003d14c5d2SYehuda Sadeh 20013d14c5d2SYehuda Sadeh if (unlikely(req->r_num_pages < want)) { 20029bb0ce2bSSage Weil pr_warning("tid %lld reply has %d bytes %d pages, we" 20039bb0ce2bSSage Weil " had only %d pages ready\n", tid, data_len, 20049bb0ce2bSSage Weil want, req->r_num_pages); 20053d14c5d2SYehuda Sadeh *skip = 1; 20063d14c5d2SYehuda Sadeh ceph_msg_put(m); 20073d14c5d2SYehuda Sadeh m = NULL; 20083d14c5d2SYehuda Sadeh goto out; 20093d14c5d2SYehuda Sadeh } 20103d14c5d2SYehuda Sadeh m->pages = req->r_pages; 20113d14c5d2SYehuda Sadeh m->nr_pages = req->r_num_pages; 2012c5c6b19dSSage Weil m->page_alignment = req->r_page_alignment; 20133d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 20143d14c5d2SYehuda Sadeh m->bio = req->r_bio; 20153d14c5d2SYehuda Sadeh #endif 20163d14c5d2SYehuda Sadeh } 20173d14c5d2SYehuda Sadeh *skip = 0; 20180d47766fSSage Weil req->r_con_filling_msg = con->ops->get(con); 20193d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 20203d14c5d2SYehuda Sadeh 20213d14c5d2SYehuda Sadeh out: 20223d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 20233d14c5d2SYehuda Sadeh return m; 20243d14c5d2SYehuda Sadeh 20253d14c5d2SYehuda Sadeh } 20263d14c5d2SYehuda Sadeh 20273d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 20283d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 20293d14c5d2SYehuda Sadeh int *skip) 20303d14c5d2SYehuda Sadeh { 20313d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 20323d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 20333d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 20343d14c5d2SYehuda Sadeh 20351c20f2d2SAlex Elder *skip = 0; 20363d14c5d2SYehuda Sadeh switch (type) { 20373d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2038a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2039b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 20403d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 20413d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 20423d14c5d2SYehuda Sadeh default: 20433d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 20443d14c5d2SYehuda Sadeh osd->o_osd); 20453d14c5d2SYehuda Sadeh *skip = 1; 20463d14c5d2SYehuda Sadeh return NULL; 20473d14c5d2SYehuda Sadeh } 20483d14c5d2SYehuda Sadeh } 20493d14c5d2SYehuda Sadeh 20503d14c5d2SYehuda Sadeh /* 20513d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 20523d14c5d2SYehuda Sadeh */ 20533d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 20543d14c5d2SYehuda Sadeh { 20553d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 20563d14c5d2SYehuda Sadeh if (get_osd(osd)) 20573d14c5d2SYehuda Sadeh return con; 20583d14c5d2SYehuda Sadeh return NULL; 20593d14c5d2SYehuda Sadeh } 20603d14c5d2SYehuda Sadeh 20613d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 20623d14c5d2SYehuda Sadeh { 20633d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 20643d14c5d2SYehuda Sadeh put_osd(osd); 20653d14c5d2SYehuda Sadeh } 20663d14c5d2SYehuda Sadeh 20673d14c5d2SYehuda Sadeh /* 20683d14c5d2SYehuda Sadeh * authentication 20693d14c5d2SYehuda Sadeh */ 2070a3530df3SAlex Elder /* 2071a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2072a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2073a3530df3SAlex Elder */ 2074a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 20758f43fb53SAlex Elder int *proto, int force_new) 20763d14c5d2SYehuda Sadeh { 20773d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 20783d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 20793d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 208074f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 20813d14c5d2SYehuda Sadeh 208274f1869fSAlex Elder if (force_new && auth->authorizer) { 2083a255651dSAlex Elder if (ac->ops && ac->ops->destroy_authorizer) 208474f1869fSAlex Elder ac->ops->destroy_authorizer(ac, auth->authorizer); 208574f1869fSAlex Elder auth->authorizer = NULL; 20863d14c5d2SYehuda Sadeh } 2087a255651dSAlex Elder if (!auth->authorizer && ac->ops && ac->ops->create_authorizer) { 2088a3530df3SAlex Elder int ret = ac->ops->create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2089a3530df3SAlex Elder auth); 20903d14c5d2SYehuda Sadeh if (ret) 2091a3530df3SAlex Elder return ERR_PTR(ret); 20923d14c5d2SYehuda Sadeh } 20933d14c5d2SYehuda Sadeh *proto = ac->protocol; 209474f1869fSAlex Elder 2095a3530df3SAlex Elder return auth; 20963d14c5d2SYehuda Sadeh } 20973d14c5d2SYehuda Sadeh 20983d14c5d2SYehuda Sadeh 20993d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 21003d14c5d2SYehuda Sadeh { 21013d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 21023d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 21033d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 21043d14c5d2SYehuda Sadeh 2105a255651dSAlex Elder /* 2106a255651dSAlex Elder * XXX If ac->ops or ac->ops->verify_authorizer_reply is null, 2107a255651dSAlex Elder * XXX which do we do: succeed or fail? 2108a255651dSAlex Elder */ 21096c4a1915SAlex Elder return ac->ops->verify_authorizer_reply(ac, o->o_auth.authorizer, len); 21103d14c5d2SYehuda Sadeh } 21113d14c5d2SYehuda Sadeh 21123d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 21133d14c5d2SYehuda Sadeh { 21143d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 21153d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 21163d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 21173d14c5d2SYehuda Sadeh 2118a255651dSAlex Elder if (ac->ops && ac->ops->invalidate_authorizer) 21193d14c5d2SYehuda Sadeh ac->ops->invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 21203d14c5d2SYehuda Sadeh 21213d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 21223d14c5d2SYehuda Sadeh } 21233d14c5d2SYehuda Sadeh 21243d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 21253d14c5d2SYehuda Sadeh .get = get_osd_con, 21263d14c5d2SYehuda Sadeh .put = put_osd_con, 21273d14c5d2SYehuda Sadeh .dispatch = dispatch, 21283d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 21293d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 21303d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 21313d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 21323d14c5d2SYehuda Sadeh .fault = osd_reset, 21333d14c5d2SYehuda Sadeh }; 2134