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 static int __kick_requests(struct ceph_osd_client *osdc, 263d14c5d2SYehuda Sadeh struct ceph_osd *kickosd); 273d14c5d2SYehuda Sadeh 283d14c5d2SYehuda Sadeh static void kick_requests(struct ceph_osd_client *osdc, struct ceph_osd *osd); 293d14c5d2SYehuda Sadeh 303d14c5d2SYehuda Sadeh static int op_needs_trail(int op) 313d14c5d2SYehuda Sadeh { 323d14c5d2SYehuda Sadeh switch (op) { 333d14c5d2SYehuda Sadeh case CEPH_OSD_OP_GETXATTR: 343d14c5d2SYehuda Sadeh case CEPH_OSD_OP_SETXATTR: 353d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CMPXATTR: 363d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 373d14c5d2SYehuda Sadeh return 1; 383d14c5d2SYehuda Sadeh default: 393d14c5d2SYehuda Sadeh return 0; 403d14c5d2SYehuda Sadeh } 413d14c5d2SYehuda Sadeh } 423d14c5d2SYehuda Sadeh 433d14c5d2SYehuda Sadeh static int op_has_extent(int op) 443d14c5d2SYehuda Sadeh { 453d14c5d2SYehuda Sadeh return (op == CEPH_OSD_OP_READ || 463d14c5d2SYehuda Sadeh op == CEPH_OSD_OP_WRITE); 473d14c5d2SYehuda Sadeh } 483d14c5d2SYehuda Sadeh 493d14c5d2SYehuda Sadeh void ceph_calc_raw_layout(struct ceph_osd_client *osdc, 503d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 513d14c5d2SYehuda Sadeh u64 snapid, 523d14c5d2SYehuda Sadeh u64 off, u64 *plen, u64 *bno, 533d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 543d14c5d2SYehuda Sadeh struct ceph_osd_req_op *op) 553d14c5d2SYehuda Sadeh { 563d14c5d2SYehuda Sadeh struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base; 573d14c5d2SYehuda Sadeh u64 orig_len = *plen; 583d14c5d2SYehuda Sadeh u64 objoff, objlen; /* extent in object */ 593d14c5d2SYehuda Sadeh 603d14c5d2SYehuda Sadeh reqhead->snapid = cpu_to_le64(snapid); 613d14c5d2SYehuda Sadeh 623d14c5d2SYehuda Sadeh /* object extent? */ 633d14c5d2SYehuda Sadeh ceph_calc_file_object_mapping(layout, off, plen, bno, 643d14c5d2SYehuda Sadeh &objoff, &objlen); 653d14c5d2SYehuda Sadeh if (*plen < orig_len) 663d14c5d2SYehuda Sadeh dout(" skipping last %llu, final file extent %llu~%llu\n", 673d14c5d2SYehuda Sadeh orig_len - *plen, off, *plen); 683d14c5d2SYehuda Sadeh 693d14c5d2SYehuda Sadeh if (op_has_extent(op->op)) { 703d14c5d2SYehuda Sadeh op->extent.offset = objoff; 713d14c5d2SYehuda Sadeh op->extent.length = objlen; 723d14c5d2SYehuda Sadeh } 733d14c5d2SYehuda Sadeh req->r_num_pages = calc_pages_for(off, *plen); 743d14c5d2SYehuda Sadeh if (op->op == CEPH_OSD_OP_WRITE) 753d14c5d2SYehuda Sadeh op->payload_len = *plen; 763d14c5d2SYehuda Sadeh 773d14c5d2SYehuda Sadeh dout("calc_layout bno=%llx %llu~%llu (%d pages)\n", 783d14c5d2SYehuda Sadeh *bno, objoff, objlen, req->r_num_pages); 793d14c5d2SYehuda Sadeh 803d14c5d2SYehuda Sadeh } 813d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_calc_raw_layout); 823d14c5d2SYehuda Sadeh 833d14c5d2SYehuda Sadeh /* 843d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 853d14c5d2SYehuda Sadeh * 863d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 873d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 883d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 893d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 903d14c5d2SYehuda Sadeh * access to storage. 913d14c5d2SYehuda Sadeh * 923d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 933d14c5d2SYehuda Sadeh * are described by the osd map. 943d14c5d2SYehuda Sadeh * 953d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 963d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 973d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 983d14c5d2SYehuda Sadeh * channel with an OSD is reset. 993d14c5d2SYehuda Sadeh */ 1003d14c5d2SYehuda Sadeh 1013d14c5d2SYehuda Sadeh /* 1023d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 1033d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 1043d14c5d2SYehuda Sadeh * object boundary. 1053d14c5d2SYehuda Sadeh * 1063d14c5d2SYehuda Sadeh * fill osd op in request message. 1073d14c5d2SYehuda Sadeh */ 1083d14c5d2SYehuda Sadeh static void calc_layout(struct ceph_osd_client *osdc, 1093d14c5d2SYehuda Sadeh 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; 1163d14c5d2SYehuda Sadeh 1173d14c5d2SYehuda Sadeh ceph_calc_raw_layout(osdc, layout, vino.snap, off, 1183d14c5d2SYehuda Sadeh plen, &bno, req, op); 1193d14c5d2SYehuda Sadeh 1203d14c5d2SYehuda Sadeh sprintf(req->r_oid, "%llx.%08llx", vino.ino, bno); 1213d14c5d2SYehuda Sadeh req->r_oid_len = strlen(req->r_oid); 1223d14c5d2SYehuda Sadeh } 1233d14c5d2SYehuda Sadeh 1243d14c5d2SYehuda Sadeh /* 1253d14c5d2SYehuda Sadeh * requests 1263d14c5d2SYehuda Sadeh */ 1273d14c5d2SYehuda Sadeh void ceph_osdc_release_request(struct kref *kref) 1283d14c5d2SYehuda Sadeh { 1293d14c5d2SYehuda Sadeh struct ceph_osd_request *req = container_of(kref, 1303d14c5d2SYehuda Sadeh struct ceph_osd_request, 1313d14c5d2SYehuda Sadeh r_kref); 1323d14c5d2SYehuda Sadeh 1333d14c5d2SYehuda Sadeh if (req->r_request) 1343d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 1353d14c5d2SYehuda Sadeh if (req->r_reply) 1363d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 1373d14c5d2SYehuda Sadeh if (req->r_con_filling_msg) { 1383d14c5d2SYehuda Sadeh dout("release_request revoking pages %p from con %p\n", 1393d14c5d2SYehuda Sadeh req->r_pages, req->r_con_filling_msg); 1403d14c5d2SYehuda Sadeh ceph_con_revoke_message(req->r_con_filling_msg, 1413d14c5d2SYehuda Sadeh req->r_reply); 1423d14c5d2SYehuda Sadeh ceph_con_put(req->r_con_filling_msg); 1433d14c5d2SYehuda Sadeh } 1443d14c5d2SYehuda Sadeh if (req->r_own_pages) 1453d14c5d2SYehuda Sadeh ceph_release_page_vector(req->r_pages, 1463d14c5d2SYehuda Sadeh req->r_num_pages); 1473d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 1483d14c5d2SYehuda Sadeh if (req->r_bio) 1493d14c5d2SYehuda Sadeh bio_put(req->r_bio); 1503d14c5d2SYehuda Sadeh #endif 1513d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 1523d14c5d2SYehuda Sadeh if (req->r_trail) { 1533d14c5d2SYehuda Sadeh ceph_pagelist_release(req->r_trail); 1543d14c5d2SYehuda Sadeh kfree(req->r_trail); 1553d14c5d2SYehuda Sadeh } 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 1633d14c5d2SYehuda Sadeh static int get_num_ops(struct ceph_osd_req_op *ops, int *needs_trail) 1643d14c5d2SYehuda Sadeh { 1653d14c5d2SYehuda Sadeh int i = 0; 1663d14c5d2SYehuda Sadeh 1673d14c5d2SYehuda Sadeh if (needs_trail) 1683d14c5d2SYehuda Sadeh *needs_trail = 0; 1693d14c5d2SYehuda Sadeh while (ops[i].op) { 1703d14c5d2SYehuda Sadeh if (needs_trail && op_needs_trail(ops[i].op)) 1713d14c5d2SYehuda Sadeh *needs_trail = 1; 1723d14c5d2SYehuda Sadeh i++; 1733d14c5d2SYehuda Sadeh } 1743d14c5d2SYehuda Sadeh 1753d14c5d2SYehuda Sadeh return i; 1763d14c5d2SYehuda Sadeh } 1773d14c5d2SYehuda Sadeh 1783d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 1793d14c5d2SYehuda Sadeh int flags, 1803d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 1813d14c5d2SYehuda Sadeh struct ceph_osd_req_op *ops, 1823d14c5d2SYehuda Sadeh bool use_mempool, 1833d14c5d2SYehuda Sadeh gfp_t gfp_flags, 1843d14c5d2SYehuda Sadeh struct page **pages, 1853d14c5d2SYehuda Sadeh struct bio *bio) 1863d14c5d2SYehuda Sadeh { 1873d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1883d14c5d2SYehuda Sadeh struct ceph_msg *msg; 1893d14c5d2SYehuda Sadeh int needs_trail; 1903d14c5d2SYehuda Sadeh int num_op = get_num_ops(ops, &needs_trail); 1913d14c5d2SYehuda Sadeh size_t msg_size = sizeof(struct ceph_osd_request_head); 1923d14c5d2SYehuda Sadeh 1933d14c5d2SYehuda Sadeh msg_size += num_op*sizeof(struct ceph_osd_op); 1943d14c5d2SYehuda Sadeh 1953d14c5d2SYehuda Sadeh if (use_mempool) { 1963d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 1973d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 1983d14c5d2SYehuda Sadeh } else { 1993d14c5d2SYehuda Sadeh req = kzalloc(sizeof(*req), gfp_flags); 2003d14c5d2SYehuda Sadeh } 2013d14c5d2SYehuda Sadeh if (req == NULL) 2023d14c5d2SYehuda Sadeh return NULL; 2033d14c5d2SYehuda Sadeh 2043d14c5d2SYehuda Sadeh req->r_osdc = osdc; 2053d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 2063d14c5d2SYehuda Sadeh 2073d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 2083d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 2093d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 2103d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 2113d14c5d2SYehuda Sadeh req->r_flags = flags; 2123d14c5d2SYehuda Sadeh 2133d14c5d2SYehuda Sadeh WARN_ON((flags & (CEPH_OSD_FLAG_READ|CEPH_OSD_FLAG_WRITE)) == 0); 2143d14c5d2SYehuda Sadeh 2153d14c5d2SYehuda Sadeh /* create reply message */ 2163d14c5d2SYehuda Sadeh if (use_mempool) 2173d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 2183d14c5d2SYehuda Sadeh else 2193d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 2203d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, gfp_flags); 2213d14c5d2SYehuda Sadeh if (!msg) { 2223d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 2233d14c5d2SYehuda Sadeh return NULL; 2243d14c5d2SYehuda Sadeh } 2253d14c5d2SYehuda Sadeh req->r_reply = msg; 2263d14c5d2SYehuda Sadeh 2273d14c5d2SYehuda Sadeh /* allocate space for the trailing data */ 2283d14c5d2SYehuda Sadeh if (needs_trail) { 2293d14c5d2SYehuda Sadeh req->r_trail = kmalloc(sizeof(struct ceph_pagelist), gfp_flags); 2303d14c5d2SYehuda Sadeh if (!req->r_trail) { 2313d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 2323d14c5d2SYehuda Sadeh return NULL; 2333d14c5d2SYehuda Sadeh } 2343d14c5d2SYehuda Sadeh ceph_pagelist_init(req->r_trail); 2353d14c5d2SYehuda Sadeh } 2363d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 2373d14c5d2SYehuda Sadeh msg_size += 40; 2383d14c5d2SYehuda Sadeh if (snapc) 2393d14c5d2SYehuda Sadeh msg_size += sizeof(u64) * snapc->num_snaps; 2403d14c5d2SYehuda Sadeh if (use_mempool) 2413d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 2423d14c5d2SYehuda Sadeh else 2433d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags); 2443d14c5d2SYehuda Sadeh if (!msg) { 2453d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 2463d14c5d2SYehuda Sadeh return NULL; 2473d14c5d2SYehuda Sadeh } 2483d14c5d2SYehuda Sadeh 2493d14c5d2SYehuda Sadeh msg->hdr.type = cpu_to_le16(CEPH_MSG_OSD_OP); 2503d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 2513d14c5d2SYehuda Sadeh 2523d14c5d2SYehuda Sadeh req->r_request = msg; 2533d14c5d2SYehuda Sadeh req->r_pages = pages; 2543d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 2553d14c5d2SYehuda Sadeh if (bio) { 2563d14c5d2SYehuda Sadeh req->r_bio = bio; 2573d14c5d2SYehuda Sadeh bio_get(req->r_bio); 2583d14c5d2SYehuda Sadeh } 2593d14c5d2SYehuda Sadeh #endif 2603d14c5d2SYehuda Sadeh 2613d14c5d2SYehuda Sadeh return req; 2623d14c5d2SYehuda Sadeh } 2633d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 2643d14c5d2SYehuda Sadeh 2653d14c5d2SYehuda Sadeh static void osd_req_encode_op(struct ceph_osd_request *req, 2663d14c5d2SYehuda Sadeh struct ceph_osd_op *dst, 2673d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src) 2683d14c5d2SYehuda Sadeh { 2693d14c5d2SYehuda Sadeh dst->op = cpu_to_le16(src->op); 2703d14c5d2SYehuda Sadeh 2713d14c5d2SYehuda Sadeh switch (dst->op) { 2723d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 2733d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 2743d14c5d2SYehuda Sadeh dst->extent.offset = 2753d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.offset); 2763d14c5d2SYehuda Sadeh dst->extent.length = 2773d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.length); 2783d14c5d2SYehuda Sadeh dst->extent.truncate_size = 2793d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 2803d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 2813d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 2823d14c5d2SYehuda Sadeh break; 2833d14c5d2SYehuda Sadeh 2843d14c5d2SYehuda Sadeh case CEPH_OSD_OP_GETXATTR: 2853d14c5d2SYehuda Sadeh case CEPH_OSD_OP_SETXATTR: 2863d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CMPXATTR: 2873d14c5d2SYehuda Sadeh BUG_ON(!req->r_trail); 2883d14c5d2SYehuda Sadeh 2893d14c5d2SYehuda Sadeh dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 2903d14c5d2SYehuda Sadeh dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 2913d14c5d2SYehuda Sadeh dst->xattr.cmp_op = src->xattr.cmp_op; 2923d14c5d2SYehuda Sadeh dst->xattr.cmp_mode = src->xattr.cmp_mode; 2933d14c5d2SYehuda Sadeh ceph_pagelist_append(req->r_trail, src->xattr.name, 2943d14c5d2SYehuda Sadeh src->xattr.name_len); 2953d14c5d2SYehuda Sadeh ceph_pagelist_append(req->r_trail, src->xattr.val, 2963d14c5d2SYehuda Sadeh src->xattr.value_len); 2973d14c5d2SYehuda Sadeh break; 2983d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 2993d14c5d2SYehuda Sadeh BUG_ON(!req->r_trail); 3003d14c5d2SYehuda Sadeh 3013d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 3023d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 3033d14c5d2SYehuda Sadeh dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 3043d14c5d2SYehuda Sadeh 3053d14c5d2SYehuda Sadeh ceph_pagelist_append(req->r_trail, src->cls.class_name, 3063d14c5d2SYehuda Sadeh src->cls.class_len); 3073d14c5d2SYehuda Sadeh ceph_pagelist_append(req->r_trail, src->cls.method_name, 3083d14c5d2SYehuda Sadeh src->cls.method_len); 3093d14c5d2SYehuda Sadeh ceph_pagelist_append(req->r_trail, src->cls.indata, 3103d14c5d2SYehuda Sadeh src->cls.indata_len); 3113d14c5d2SYehuda Sadeh break; 3123d14c5d2SYehuda Sadeh case CEPH_OSD_OP_ROLLBACK: 3133d14c5d2SYehuda Sadeh dst->snap.snapid = cpu_to_le64(src->snap.snapid); 3143d14c5d2SYehuda Sadeh break; 3153d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 3163d14c5d2SYehuda Sadeh break; 3173d14c5d2SYehuda Sadeh default: 3183d14c5d2SYehuda Sadeh pr_err("unrecognized osd opcode %d\n", dst->op); 3193d14c5d2SYehuda Sadeh WARN_ON(1); 3203d14c5d2SYehuda Sadeh break; 3213d14c5d2SYehuda Sadeh } 3223d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 3233d14c5d2SYehuda Sadeh } 3243d14c5d2SYehuda Sadeh 3253d14c5d2SYehuda Sadeh /* 3263d14c5d2SYehuda Sadeh * build new request AND message 3273d14c5d2SYehuda Sadeh * 3283d14c5d2SYehuda Sadeh */ 3293d14c5d2SYehuda Sadeh void ceph_osdc_build_request(struct ceph_osd_request *req, 3303d14c5d2SYehuda Sadeh u64 off, u64 *plen, 3313d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_ops, 3323d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 3333d14c5d2SYehuda Sadeh struct timespec *mtime, 3343d14c5d2SYehuda Sadeh const char *oid, 3353d14c5d2SYehuda Sadeh int oid_len) 3363d14c5d2SYehuda Sadeh { 3373d14c5d2SYehuda Sadeh struct ceph_msg *msg = req->r_request; 3383d14c5d2SYehuda Sadeh struct ceph_osd_request_head *head; 3393d14c5d2SYehuda Sadeh struct ceph_osd_req_op *src_op; 3403d14c5d2SYehuda Sadeh struct ceph_osd_op *op; 3413d14c5d2SYehuda Sadeh void *p; 3423d14c5d2SYehuda Sadeh int num_op = get_num_ops(src_ops, NULL); 3433d14c5d2SYehuda Sadeh size_t msg_size = sizeof(*head) + num_op*sizeof(*op); 3443d14c5d2SYehuda Sadeh int flags = req->r_flags; 3453d14c5d2SYehuda Sadeh u64 data_len = 0; 3463d14c5d2SYehuda Sadeh int i; 3473d14c5d2SYehuda Sadeh 3483d14c5d2SYehuda Sadeh head = msg->front.iov_base; 3493d14c5d2SYehuda Sadeh op = (void *)(head + 1); 3503d14c5d2SYehuda Sadeh p = (void *)(op + num_op); 3513d14c5d2SYehuda Sadeh 3523d14c5d2SYehuda Sadeh req->r_snapc = ceph_get_snap_context(snapc); 3533d14c5d2SYehuda Sadeh 3543d14c5d2SYehuda Sadeh head->client_inc = cpu_to_le32(1); /* always, for now. */ 3553d14c5d2SYehuda Sadeh head->flags = cpu_to_le32(flags); 3563d14c5d2SYehuda Sadeh if (flags & CEPH_OSD_FLAG_WRITE) 3573d14c5d2SYehuda Sadeh ceph_encode_timespec(&head->mtime, mtime); 3583d14c5d2SYehuda Sadeh head->num_ops = cpu_to_le16(num_op); 3593d14c5d2SYehuda Sadeh 3603d14c5d2SYehuda Sadeh 3613d14c5d2SYehuda Sadeh /* fill in oid */ 3623d14c5d2SYehuda Sadeh head->object_len = cpu_to_le32(oid_len); 3633d14c5d2SYehuda Sadeh memcpy(p, oid, oid_len); 3643d14c5d2SYehuda Sadeh p += oid_len; 3653d14c5d2SYehuda Sadeh 3663d14c5d2SYehuda Sadeh src_op = src_ops; 3673d14c5d2SYehuda Sadeh while (src_op->op) { 3683d14c5d2SYehuda Sadeh osd_req_encode_op(req, op, src_op); 3693d14c5d2SYehuda Sadeh src_op++; 3703d14c5d2SYehuda Sadeh op++; 3713d14c5d2SYehuda Sadeh } 3723d14c5d2SYehuda Sadeh 3733d14c5d2SYehuda Sadeh if (req->r_trail) 3743d14c5d2SYehuda Sadeh data_len += req->r_trail->length; 3753d14c5d2SYehuda Sadeh 3763d14c5d2SYehuda Sadeh if (snapc) { 3773d14c5d2SYehuda Sadeh head->snap_seq = cpu_to_le64(snapc->seq); 3783d14c5d2SYehuda Sadeh head->num_snaps = cpu_to_le32(snapc->num_snaps); 3793d14c5d2SYehuda Sadeh for (i = 0; i < snapc->num_snaps; i++) { 3803d14c5d2SYehuda Sadeh put_unaligned_le64(snapc->snaps[i], p); 3813d14c5d2SYehuda Sadeh p += sizeof(u64); 3823d14c5d2SYehuda Sadeh } 3833d14c5d2SYehuda Sadeh } 3843d14c5d2SYehuda Sadeh 3853d14c5d2SYehuda Sadeh if (flags & CEPH_OSD_FLAG_WRITE) { 3863d14c5d2SYehuda Sadeh req->r_request->hdr.data_off = cpu_to_le16(off); 3873d14c5d2SYehuda Sadeh req->r_request->hdr.data_len = cpu_to_le32(*plen + data_len); 3883d14c5d2SYehuda Sadeh } else if (data_len) { 3893d14c5d2SYehuda Sadeh req->r_request->hdr.data_off = 0; 3903d14c5d2SYehuda Sadeh req->r_request->hdr.data_len = cpu_to_le32(data_len); 3913d14c5d2SYehuda Sadeh } 3923d14c5d2SYehuda Sadeh 3933d14c5d2SYehuda Sadeh BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 3943d14c5d2SYehuda Sadeh msg_size = p - msg->front.iov_base; 3953d14c5d2SYehuda Sadeh msg->front.iov_len = msg_size; 3963d14c5d2SYehuda Sadeh msg->hdr.front_len = cpu_to_le32(msg_size); 3973d14c5d2SYehuda Sadeh return; 3983d14c5d2SYehuda Sadeh } 3993d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_build_request); 4003d14c5d2SYehuda Sadeh 4013d14c5d2SYehuda Sadeh /* 4023d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 4033d14c5d2SYehuda Sadeh * extent as needed. 4043d14c5d2SYehuda Sadeh * 4053d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 4063d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 4073d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 4083d14c5d2SYehuda Sadeh * 4093d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 4103d14c5d2SYehuda Sadeh * data quickly. 4113d14c5d2SYehuda Sadeh */ 4123d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 4133d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 4143d14c5d2SYehuda Sadeh struct ceph_vino vino, 4153d14c5d2SYehuda Sadeh u64 off, u64 *plen, 4163d14c5d2SYehuda Sadeh int opcode, int flags, 4173d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 4183d14c5d2SYehuda Sadeh int do_sync, 4193d14c5d2SYehuda Sadeh u32 truncate_seq, 4203d14c5d2SYehuda Sadeh u64 truncate_size, 4213d14c5d2SYehuda Sadeh struct timespec *mtime, 4223d14c5d2SYehuda Sadeh bool use_mempool, int num_reply) 4233d14c5d2SYehuda Sadeh { 4243d14c5d2SYehuda Sadeh struct ceph_osd_req_op ops[3]; 4253d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 4263d14c5d2SYehuda Sadeh 4273d14c5d2SYehuda Sadeh ops[0].op = opcode; 4283d14c5d2SYehuda Sadeh ops[0].extent.truncate_seq = truncate_seq; 4293d14c5d2SYehuda Sadeh ops[0].extent.truncate_size = truncate_size; 4303d14c5d2SYehuda Sadeh ops[0].payload_len = 0; 4313d14c5d2SYehuda Sadeh 4323d14c5d2SYehuda Sadeh if (do_sync) { 4333d14c5d2SYehuda Sadeh ops[1].op = CEPH_OSD_OP_STARTSYNC; 4343d14c5d2SYehuda Sadeh ops[1].payload_len = 0; 4353d14c5d2SYehuda Sadeh ops[2].op = 0; 4363d14c5d2SYehuda Sadeh } else 4373d14c5d2SYehuda Sadeh ops[1].op = 0; 4383d14c5d2SYehuda Sadeh 4393d14c5d2SYehuda Sadeh req = ceph_osdc_alloc_request(osdc, flags, 4403d14c5d2SYehuda Sadeh snapc, ops, 4413d14c5d2SYehuda Sadeh use_mempool, 4423d14c5d2SYehuda Sadeh GFP_NOFS, NULL, NULL); 4433d14c5d2SYehuda Sadeh if (IS_ERR(req)) 4443d14c5d2SYehuda Sadeh return req; 4453d14c5d2SYehuda Sadeh 4463d14c5d2SYehuda Sadeh /* calculate max write size */ 4473d14c5d2SYehuda Sadeh calc_layout(osdc, vino, layout, off, plen, req, ops); 4483d14c5d2SYehuda Sadeh req->r_file_layout = *layout; /* keep a copy */ 4493d14c5d2SYehuda Sadeh 4503d14c5d2SYehuda Sadeh ceph_osdc_build_request(req, off, plen, ops, 4513d14c5d2SYehuda Sadeh snapc, 4523d14c5d2SYehuda Sadeh mtime, 4533d14c5d2SYehuda Sadeh req->r_oid, req->r_oid_len); 4543d14c5d2SYehuda Sadeh 4553d14c5d2SYehuda Sadeh return req; 4563d14c5d2SYehuda Sadeh } 4573d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 4583d14c5d2SYehuda Sadeh 4593d14c5d2SYehuda Sadeh /* 4603d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 4613d14c5d2SYehuda Sadeh */ 4623d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 4633d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 4643d14c5d2SYehuda Sadeh { 4653d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 4663d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 4673d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 4683d14c5d2SYehuda Sadeh 4693d14c5d2SYehuda Sadeh while (*p) { 4703d14c5d2SYehuda Sadeh parent = *p; 4713d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 4723d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 4733d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 4743d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 4753d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 4763d14c5d2SYehuda Sadeh else 4773d14c5d2SYehuda Sadeh BUG(); 4783d14c5d2SYehuda Sadeh } 4793d14c5d2SYehuda Sadeh 4803d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 4813d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 4823d14c5d2SYehuda Sadeh } 4833d14c5d2SYehuda Sadeh 4843d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 4853d14c5d2SYehuda Sadeh u64 tid) 4863d14c5d2SYehuda Sadeh { 4873d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 4883d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 4893d14c5d2SYehuda Sadeh 4903d14c5d2SYehuda Sadeh while (n) { 4913d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 4923d14c5d2SYehuda Sadeh if (tid < req->r_tid) 4933d14c5d2SYehuda Sadeh n = n->rb_left; 4943d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 4953d14c5d2SYehuda Sadeh n = n->rb_right; 4963d14c5d2SYehuda Sadeh else 4973d14c5d2SYehuda Sadeh return req; 4983d14c5d2SYehuda Sadeh } 4993d14c5d2SYehuda Sadeh return NULL; 5003d14c5d2SYehuda Sadeh } 5013d14c5d2SYehuda Sadeh 5023d14c5d2SYehuda Sadeh static struct ceph_osd_request * 5033d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 5043d14c5d2SYehuda Sadeh u64 tid) 5053d14c5d2SYehuda Sadeh { 5063d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5073d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 5083d14c5d2SYehuda Sadeh 5093d14c5d2SYehuda Sadeh while (n) { 5103d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 5113d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 5123d14c5d2SYehuda Sadeh if (!n->rb_left) 5133d14c5d2SYehuda Sadeh return req; 5143d14c5d2SYehuda Sadeh n = n->rb_left; 5153d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 5163d14c5d2SYehuda Sadeh n = n->rb_right; 5173d14c5d2SYehuda Sadeh } else { 5183d14c5d2SYehuda Sadeh return req; 5193d14c5d2SYehuda Sadeh } 5203d14c5d2SYehuda Sadeh } 5213d14c5d2SYehuda Sadeh return NULL; 5223d14c5d2SYehuda Sadeh } 5233d14c5d2SYehuda Sadeh 5243d14c5d2SYehuda Sadeh 5253d14c5d2SYehuda Sadeh /* 5263d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 5273d14c5d2SYehuda Sadeh */ 5283d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 5293d14c5d2SYehuda Sadeh { 5303d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 5313d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 5323d14c5d2SYehuda Sadeh 5333d14c5d2SYehuda Sadeh if (!osd) 5343d14c5d2SYehuda Sadeh return; 5353d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 5363d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 5373d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 5383d14c5d2SYehuda Sadeh kick_requests(osdc, osd); 5393d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 5403d14c5d2SYehuda Sadeh } 5413d14c5d2SYehuda Sadeh 5423d14c5d2SYehuda Sadeh /* 5433d14c5d2SYehuda Sadeh * Track open sessions with osds. 5443d14c5d2SYehuda Sadeh */ 5453d14c5d2SYehuda Sadeh static struct ceph_osd *create_osd(struct ceph_osd_client *osdc) 5463d14c5d2SYehuda Sadeh { 5473d14c5d2SYehuda Sadeh struct ceph_osd *osd; 5483d14c5d2SYehuda Sadeh 5493d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 5503d14c5d2SYehuda Sadeh if (!osd) 5513d14c5d2SYehuda Sadeh return NULL; 5523d14c5d2SYehuda Sadeh 5533d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 5543d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 5553d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 5563d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 5573d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 5583d14c5d2SYehuda Sadeh 5593d14c5d2SYehuda Sadeh ceph_con_init(osdc->client->msgr, &osd->o_con); 5603d14c5d2SYehuda Sadeh osd->o_con.private = osd; 5613d14c5d2SYehuda Sadeh osd->o_con.ops = &osd_con_ops; 5623d14c5d2SYehuda Sadeh osd->o_con.peer_name.type = CEPH_ENTITY_TYPE_OSD; 5633d14c5d2SYehuda Sadeh 5643d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 5653d14c5d2SYehuda Sadeh return osd; 5663d14c5d2SYehuda Sadeh } 5673d14c5d2SYehuda Sadeh 5683d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 5693d14c5d2SYehuda Sadeh { 5703d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 5713d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 5723d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 5733d14c5d2SYehuda Sadeh return osd; 5743d14c5d2SYehuda Sadeh } else { 5753d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 5763d14c5d2SYehuda Sadeh return NULL; 5773d14c5d2SYehuda Sadeh } 5783d14c5d2SYehuda Sadeh } 5793d14c5d2SYehuda Sadeh 5803d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 5813d14c5d2SYehuda Sadeh { 5823d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 5833d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 5843d14c5d2SYehuda Sadeh if (atomic_dec_and_test(&osd->o_ref)) { 5853d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 5863d14c5d2SYehuda Sadeh 5873d14c5d2SYehuda Sadeh if (osd->o_authorizer) 5883d14c5d2SYehuda Sadeh ac->ops->destroy_authorizer(ac, osd->o_authorizer); 5893d14c5d2SYehuda Sadeh kfree(osd); 5903d14c5d2SYehuda Sadeh } 5913d14c5d2SYehuda Sadeh } 5923d14c5d2SYehuda Sadeh 5933d14c5d2SYehuda Sadeh /* 5943d14c5d2SYehuda Sadeh * remove an osd from our map 5953d14c5d2SYehuda Sadeh */ 5963d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 5973d14c5d2SYehuda Sadeh { 5983d14c5d2SYehuda Sadeh dout("__remove_osd %p\n", osd); 5993d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_requests)); 6003d14c5d2SYehuda Sadeh rb_erase(&osd->o_node, &osdc->osds); 6013d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 6023d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 6033d14c5d2SYehuda Sadeh put_osd(osd); 6043d14c5d2SYehuda Sadeh } 6053d14c5d2SYehuda Sadeh 6063d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 6073d14c5d2SYehuda Sadeh struct ceph_osd *osd) 6083d14c5d2SYehuda Sadeh { 6093d14c5d2SYehuda Sadeh dout("__move_osd_to_lru %p\n", osd); 6103d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 6113d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 6123d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 6133d14c5d2SYehuda Sadeh } 6143d14c5d2SYehuda Sadeh 6153d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 6163d14c5d2SYehuda Sadeh { 6173d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 6183d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 6193d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 6203d14c5d2SYehuda Sadeh } 6213d14c5d2SYehuda Sadeh 6223d14c5d2SYehuda Sadeh static void remove_old_osds(struct ceph_osd_client *osdc, int remove_all) 6233d14c5d2SYehuda Sadeh { 6243d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 6253d14c5d2SYehuda Sadeh 6263d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 6273d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 6283d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 6293d14c5d2SYehuda Sadeh if (!remove_all && time_before(jiffies, osd->lru_ttl)) 6303d14c5d2SYehuda Sadeh break; 6313d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 6323d14c5d2SYehuda Sadeh } 6333d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 6343d14c5d2SYehuda Sadeh } 6353d14c5d2SYehuda Sadeh 6363d14c5d2SYehuda Sadeh /* 6373d14c5d2SYehuda Sadeh * reset osd connect 6383d14c5d2SYehuda Sadeh */ 6393d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 6403d14c5d2SYehuda Sadeh { 6413d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 6423d14c5d2SYehuda Sadeh int ret = 0; 6433d14c5d2SYehuda Sadeh 6443d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 6453d14c5d2SYehuda Sadeh if (list_empty(&osd->o_requests)) { 6463d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 6473d14c5d2SYehuda Sadeh } else if (memcmp(&osdc->osdmap->osd_addr[osd->o_osd], 6483d14c5d2SYehuda Sadeh &osd->o_con.peer_addr, 6493d14c5d2SYehuda Sadeh sizeof(osd->o_con.peer_addr)) == 0 && 6503d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 6513d14c5d2SYehuda Sadeh dout(" osd addr hasn't changed and connection never opened," 6523d14c5d2SYehuda Sadeh " letting msgr retry"); 6533d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 6543d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 6553d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 6563d14c5d2SYehuda Sadeh ret = -EAGAIN; 6573d14c5d2SYehuda Sadeh } else { 6583d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 6593d14c5d2SYehuda Sadeh ceph_con_open(&osd->o_con, &osdc->osdmap->osd_addr[osd->o_osd]); 6603d14c5d2SYehuda Sadeh osd->o_incarnation++; 6613d14c5d2SYehuda Sadeh } 6623d14c5d2SYehuda Sadeh return ret; 6633d14c5d2SYehuda Sadeh } 6643d14c5d2SYehuda Sadeh 6653d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 6663d14c5d2SYehuda Sadeh { 6673d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 6683d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 6693d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 6703d14c5d2SYehuda Sadeh 6713d14c5d2SYehuda Sadeh while (*p) { 6723d14c5d2SYehuda Sadeh parent = *p; 6733d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 6743d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 6753d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 6763d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 6773d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 6783d14c5d2SYehuda Sadeh else 6793d14c5d2SYehuda Sadeh BUG(); 6803d14c5d2SYehuda Sadeh } 6813d14c5d2SYehuda Sadeh 6823d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 6833d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 6843d14c5d2SYehuda Sadeh } 6853d14c5d2SYehuda Sadeh 6863d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 6873d14c5d2SYehuda Sadeh { 6883d14c5d2SYehuda Sadeh struct ceph_osd *osd; 6893d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 6903d14c5d2SYehuda Sadeh 6913d14c5d2SYehuda Sadeh while (n) { 6923d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 6933d14c5d2SYehuda Sadeh if (o < osd->o_osd) 6943d14c5d2SYehuda Sadeh n = n->rb_left; 6953d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 6963d14c5d2SYehuda Sadeh n = n->rb_right; 6973d14c5d2SYehuda Sadeh else 6983d14c5d2SYehuda Sadeh return osd; 6993d14c5d2SYehuda Sadeh } 7003d14c5d2SYehuda Sadeh return NULL; 7013d14c5d2SYehuda Sadeh } 7023d14c5d2SYehuda Sadeh 7033d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 7043d14c5d2SYehuda Sadeh { 7053d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 7063d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 7073d14c5d2SYehuda Sadeh } 7083d14c5d2SYehuda Sadeh 7093d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 7103d14c5d2SYehuda Sadeh { 7113d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 7123d14c5d2SYehuda Sadeh } 7133d14c5d2SYehuda Sadeh 7143d14c5d2SYehuda Sadeh /* 7153d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 7163d14c5d2SYehuda Sadeh * the timeout event. 7173d14c5d2SYehuda Sadeh */ 7183d14c5d2SYehuda Sadeh static void register_request(struct ceph_osd_client *osdc, 7193d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 7203d14c5d2SYehuda Sadeh { 7213d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 7223d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 7233d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 7243d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_req_lru_item); 7253d14c5d2SYehuda Sadeh 7263d14c5d2SYehuda Sadeh dout("register_request %p tid %lld\n", req, req->r_tid); 7273d14c5d2SYehuda Sadeh __insert_request(osdc, req); 7283d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 7293d14c5d2SYehuda Sadeh osdc->num_requests++; 7303d14c5d2SYehuda Sadeh 7313d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 7323d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 7333d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 7343d14c5d2SYehuda Sadeh } 7353d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 7363d14c5d2SYehuda Sadeh } 7373d14c5d2SYehuda Sadeh 7383d14c5d2SYehuda Sadeh /* 7393d14c5d2SYehuda Sadeh * called under osdc->request_mutex 7403d14c5d2SYehuda Sadeh */ 7413d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 7423d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 7433d14c5d2SYehuda Sadeh { 7443d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 7453d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 7463d14c5d2SYehuda Sadeh osdc->num_requests--; 7473d14c5d2SYehuda Sadeh 7483d14c5d2SYehuda Sadeh if (req->r_osd) { 7493d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 7503d14c5d2SYehuda Sadeh ceph_con_revoke(&req->r_osd->o_con, req->r_request); 7513d14c5d2SYehuda Sadeh 7523d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 7533d14c5d2SYehuda Sadeh if (list_empty(&req->r_osd->o_requests)) 7543d14c5d2SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 7553d14c5d2SYehuda Sadeh req->r_osd = NULL; 7563d14c5d2SYehuda Sadeh } 7573d14c5d2SYehuda Sadeh 7583d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 7593d14c5d2SYehuda Sadeh 7603d14c5d2SYehuda Sadeh list_del_init(&req->r_req_lru_item); 7613d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 7623d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 7633d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 7643d14c5d2SYehuda Sadeh } 7653d14c5d2SYehuda Sadeh } 7663d14c5d2SYehuda Sadeh 7673d14c5d2SYehuda Sadeh /* 7683d14c5d2SYehuda Sadeh * Cancel a previously queued request message 7693d14c5d2SYehuda Sadeh */ 7703d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 7713d14c5d2SYehuda Sadeh { 7723d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 7733d14c5d2SYehuda Sadeh ceph_con_revoke(&req->r_osd->o_con, req->r_request); 7743d14c5d2SYehuda Sadeh req->r_sent = 0; 7753d14c5d2SYehuda Sadeh } 7763d14c5d2SYehuda Sadeh list_del_init(&req->r_req_lru_item); 7773d14c5d2SYehuda Sadeh } 7783d14c5d2SYehuda Sadeh 7793d14c5d2SYehuda Sadeh /* 7803d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 7813d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 7823d14c5d2SYehuda Sadeh * no up osd, set r_osd to NULL. 7833d14c5d2SYehuda Sadeh * 7843d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 7853d14c5d2SYehuda Sadeh * 7863d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 7873d14c5d2SYehuda Sadeh */ 7883d14c5d2SYehuda Sadeh static int __map_osds(struct ceph_osd_client *osdc, 7893d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 7903d14c5d2SYehuda Sadeh { 7913d14c5d2SYehuda Sadeh struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base; 7923d14c5d2SYehuda Sadeh struct ceph_pg pgid; 7933d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 7943d14c5d2SYehuda Sadeh int o = -1, num = 0; 7953d14c5d2SYehuda Sadeh int err; 7963d14c5d2SYehuda Sadeh 7973d14c5d2SYehuda Sadeh dout("map_osds %p tid %lld\n", req, req->r_tid); 7983d14c5d2SYehuda Sadeh err = ceph_calc_object_layout(&reqhead->layout, req->r_oid, 7993d14c5d2SYehuda Sadeh &req->r_file_layout, osdc->osdmap); 8003d14c5d2SYehuda Sadeh if (err) 8013d14c5d2SYehuda Sadeh return err; 8023d14c5d2SYehuda Sadeh pgid = reqhead->layout.ol_pgid; 8033d14c5d2SYehuda Sadeh req->r_pgid = pgid; 8043d14c5d2SYehuda Sadeh 8053d14c5d2SYehuda Sadeh err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); 8063d14c5d2SYehuda Sadeh if (err > 0) { 8073d14c5d2SYehuda Sadeh o = acting[0]; 8083d14c5d2SYehuda Sadeh num = err; 8093d14c5d2SYehuda Sadeh } 8103d14c5d2SYehuda Sadeh 8113d14c5d2SYehuda Sadeh if ((req->r_osd && req->r_osd->o_osd == o && 8123d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 8133d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 8143d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 8153d14c5d2SYehuda Sadeh (req->r_osd == NULL && o == -1)) 8163d14c5d2SYehuda Sadeh return 0; /* no change */ 8173d14c5d2SYehuda Sadeh 8183d14c5d2SYehuda Sadeh dout("map_osds tid %llu pgid %d.%x osd%d (was osd%d)\n", 8193d14c5d2SYehuda Sadeh req->r_tid, le32_to_cpu(pgid.pool), le16_to_cpu(pgid.ps), o, 8203d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 8213d14c5d2SYehuda Sadeh 8223d14c5d2SYehuda Sadeh /* record full pg acting set */ 8233d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 8243d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 8253d14c5d2SYehuda Sadeh 8263d14c5d2SYehuda Sadeh if (req->r_osd) { 8273d14c5d2SYehuda Sadeh __cancel_request(req); 8283d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 8293d14c5d2SYehuda Sadeh req->r_osd = NULL; 8303d14c5d2SYehuda Sadeh } 8313d14c5d2SYehuda Sadeh 8323d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 8333d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 8343d14c5d2SYehuda Sadeh err = -ENOMEM; 8353d14c5d2SYehuda Sadeh req->r_osd = create_osd(osdc); 8363d14c5d2SYehuda Sadeh if (!req->r_osd) 8373d14c5d2SYehuda Sadeh goto out; 8383d14c5d2SYehuda Sadeh 8393d14c5d2SYehuda Sadeh dout("map_osds osd %p is osd%d\n", req->r_osd, o); 8403d14c5d2SYehuda Sadeh req->r_osd->o_osd = o; 8413d14c5d2SYehuda Sadeh req->r_osd->o_con.peer_name.num = cpu_to_le64(o); 8423d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 8433d14c5d2SYehuda Sadeh 8443d14c5d2SYehuda Sadeh ceph_con_open(&req->r_osd->o_con, &osdc->osdmap->osd_addr[o]); 8453d14c5d2SYehuda Sadeh } 8463d14c5d2SYehuda Sadeh 8473d14c5d2SYehuda Sadeh if (req->r_osd) { 8483d14c5d2SYehuda Sadeh __remove_osd_from_lru(req->r_osd); 8493d14c5d2SYehuda Sadeh list_add(&req->r_osd_item, &req->r_osd->o_requests); 8503d14c5d2SYehuda Sadeh } 8513d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 8523d14c5d2SYehuda Sadeh 8533d14c5d2SYehuda Sadeh out: 8543d14c5d2SYehuda Sadeh return err; 8553d14c5d2SYehuda Sadeh } 8563d14c5d2SYehuda Sadeh 8573d14c5d2SYehuda Sadeh /* 8583d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 8593d14c5d2SYehuda Sadeh */ 8603d14c5d2SYehuda Sadeh static int __send_request(struct ceph_osd_client *osdc, 8613d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 8623d14c5d2SYehuda Sadeh { 8633d14c5d2SYehuda Sadeh struct ceph_osd_request_head *reqhead; 8643d14c5d2SYehuda Sadeh int err; 8653d14c5d2SYehuda Sadeh 8663d14c5d2SYehuda Sadeh err = __map_osds(osdc, req); 8673d14c5d2SYehuda Sadeh if (err < 0) 8683d14c5d2SYehuda Sadeh return err; 8693d14c5d2SYehuda Sadeh if (req->r_osd == NULL) { 8703d14c5d2SYehuda Sadeh dout("send_request %p no up osds in pg\n", req); 8713d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 8723d14c5d2SYehuda Sadeh return 0; 8733d14c5d2SYehuda Sadeh } 8743d14c5d2SYehuda Sadeh 8753d14c5d2SYehuda Sadeh dout("send_request %p tid %llu to osd%d flags %d\n", 8763d14c5d2SYehuda Sadeh req, req->r_tid, req->r_osd->o_osd, req->r_flags); 8773d14c5d2SYehuda Sadeh 8783d14c5d2SYehuda Sadeh reqhead = req->r_request->front.iov_base; 8793d14c5d2SYehuda Sadeh reqhead->osdmap_epoch = cpu_to_le32(osdc->osdmap->epoch); 8803d14c5d2SYehuda Sadeh reqhead->flags |= cpu_to_le32(req->r_flags); /* e.g., RETRY */ 8813d14c5d2SYehuda Sadeh reqhead->reassert_version = req->r_reassert_version; 8823d14c5d2SYehuda Sadeh 8833d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 8843d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 8853d14c5d2SYehuda Sadeh 8863d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 8873d14c5d2SYehuda Sadeh ceph_con_send(&req->r_osd->o_con, req->r_request); 8883d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 8893d14c5d2SYehuda Sadeh return 0; 8903d14c5d2SYehuda Sadeh } 8913d14c5d2SYehuda Sadeh 8923d14c5d2SYehuda Sadeh /* 8933d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 8943d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 8953d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 8963d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 8973d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 8983d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 8993d14c5d2SYehuda Sadeh * there are no open requests). 9003d14c5d2SYehuda Sadeh */ 9013d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 9023d14c5d2SYehuda Sadeh { 9033d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 9043d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 9053d14c5d2SYehuda Sadeh struct ceph_osd_request *req, *last_req = NULL; 9063d14c5d2SYehuda Sadeh struct ceph_osd *osd; 9073d14c5d2SYehuda Sadeh unsigned long timeout = osdc->client->options->osd_timeout * HZ; 9083d14c5d2SYehuda Sadeh unsigned long keepalive = 9093d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 9103d14c5d2SYehuda Sadeh unsigned long last_stamp = 0; 9113d14c5d2SYehuda Sadeh struct rb_node *p; 9123d14c5d2SYehuda Sadeh struct list_head slow_osds; 9133d14c5d2SYehuda Sadeh 9143d14c5d2SYehuda Sadeh dout("timeout\n"); 9153d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 9163d14c5d2SYehuda Sadeh 9173d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 9183d14c5d2SYehuda Sadeh 9193d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 9203d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->requests); p; p = rb_next(p)) { 9213d14c5d2SYehuda Sadeh req = rb_entry(p, struct ceph_osd_request, r_node); 9223d14c5d2SYehuda Sadeh 9233d14c5d2SYehuda Sadeh if (req->r_resend) { 9243d14c5d2SYehuda Sadeh int err; 9253d14c5d2SYehuda Sadeh 9263d14c5d2SYehuda Sadeh dout("osdc resending prev failed %lld\n", req->r_tid); 9273d14c5d2SYehuda Sadeh err = __send_request(osdc, req); 9283d14c5d2SYehuda Sadeh if (err) 9293d14c5d2SYehuda Sadeh dout("osdc failed again on %lld\n", req->r_tid); 9303d14c5d2SYehuda Sadeh else 9313d14c5d2SYehuda Sadeh req->r_resend = false; 9323d14c5d2SYehuda Sadeh continue; 9333d14c5d2SYehuda Sadeh } 9343d14c5d2SYehuda Sadeh } 9353d14c5d2SYehuda Sadeh 9363d14c5d2SYehuda Sadeh /* 9373d14c5d2SYehuda Sadeh * reset osds that appear to be _really_ unresponsive. this 9383d14c5d2SYehuda Sadeh * is a failsafe measure.. we really shouldn't be getting to 9393d14c5d2SYehuda Sadeh * this point if the system is working properly. the monitors 9403d14c5d2SYehuda Sadeh * should mark the osd as failed and we should find out about 9413d14c5d2SYehuda Sadeh * it from an updated osd map. 9423d14c5d2SYehuda Sadeh */ 9433d14c5d2SYehuda Sadeh while (timeout && !list_empty(&osdc->req_lru)) { 9443d14c5d2SYehuda Sadeh req = list_entry(osdc->req_lru.next, struct ceph_osd_request, 9453d14c5d2SYehuda Sadeh r_req_lru_item); 9463d14c5d2SYehuda Sadeh 9473d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + timeout)) 9483d14c5d2SYehuda Sadeh break; 9493d14c5d2SYehuda Sadeh 9503d14c5d2SYehuda Sadeh BUG_ON(req == last_req && req->r_stamp == last_stamp); 9513d14c5d2SYehuda Sadeh last_req = req; 9523d14c5d2SYehuda Sadeh last_stamp = req->r_stamp; 9533d14c5d2SYehuda Sadeh 9543d14c5d2SYehuda Sadeh osd = req->r_osd; 9553d14c5d2SYehuda Sadeh BUG_ON(!osd); 9563d14c5d2SYehuda Sadeh pr_warning(" tid %llu timed out on osd%d, will reset osd\n", 9573d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 9583d14c5d2SYehuda Sadeh __kick_requests(osdc, osd); 9593d14c5d2SYehuda Sadeh } 9603d14c5d2SYehuda Sadeh 9613d14c5d2SYehuda Sadeh /* 9623d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 9633d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 9643d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 9653d14c5d2SYehuda Sadeh */ 9663d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 9673d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 9683d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 9693d14c5d2SYehuda Sadeh break; 9703d14c5d2SYehuda Sadeh 9713d14c5d2SYehuda Sadeh osd = req->r_osd; 9723d14c5d2SYehuda Sadeh BUG_ON(!osd); 9733d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 9743d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 9753d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 9763d14c5d2SYehuda Sadeh } 9773d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 9783d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 9793d14c5d2SYehuda Sadeh o_keepalive_item); 9803d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 9813d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 9823d14c5d2SYehuda Sadeh } 9833d14c5d2SYehuda Sadeh 9843d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 9853d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 9863d14c5d2SYehuda Sadeh 9873d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 9883d14c5d2SYehuda Sadeh } 9893d14c5d2SYehuda Sadeh 9903d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 9913d14c5d2SYehuda Sadeh { 9923d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 9933d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 9943d14c5d2SYehuda Sadeh osds_timeout_work.work); 9953d14c5d2SYehuda Sadeh unsigned long delay = 9963d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 9973d14c5d2SYehuda Sadeh 9983d14c5d2SYehuda Sadeh dout("osds timeout\n"); 9993d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 10003d14c5d2SYehuda Sadeh remove_old_osds(osdc, 0); 10013d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 10023d14c5d2SYehuda Sadeh 10033d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 10043d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 10053d14c5d2SYehuda Sadeh } 10063d14c5d2SYehuda Sadeh 10073d14c5d2SYehuda Sadeh /* 10083d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 10093d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 10103d14c5d2SYehuda Sadeh */ 10113d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 10123d14c5d2SYehuda Sadeh struct ceph_connection *con) 10133d14c5d2SYehuda Sadeh { 10143d14c5d2SYehuda Sadeh struct ceph_osd_reply_head *rhead = msg->front.iov_base; 10153d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 10163d14c5d2SYehuda Sadeh u64 tid; 10173d14c5d2SYehuda Sadeh int numops, object_len, flags; 10183d14c5d2SYehuda Sadeh s32 result; 10193d14c5d2SYehuda Sadeh 10203d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 10213d14c5d2SYehuda Sadeh if (msg->front.iov_len < sizeof(*rhead)) 10223d14c5d2SYehuda Sadeh goto bad; 10233d14c5d2SYehuda Sadeh numops = le32_to_cpu(rhead->num_ops); 10243d14c5d2SYehuda Sadeh object_len = le32_to_cpu(rhead->object_len); 10253d14c5d2SYehuda Sadeh result = le32_to_cpu(rhead->result); 10263d14c5d2SYehuda Sadeh if (msg->front.iov_len != sizeof(*rhead) + object_len + 10273d14c5d2SYehuda Sadeh numops * sizeof(struct ceph_osd_op)) 10283d14c5d2SYehuda Sadeh goto bad; 10293d14c5d2SYehuda Sadeh dout("handle_reply %p tid %llu result %d\n", msg, tid, (int)result); 10303d14c5d2SYehuda Sadeh 10313d14c5d2SYehuda Sadeh /* lookup */ 10323d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 10333d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 10343d14c5d2SYehuda Sadeh if (req == NULL) { 10353d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 10363d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 10373d14c5d2SYehuda Sadeh return; 10383d14c5d2SYehuda Sadeh } 10393d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 10403d14c5d2SYehuda Sadeh flags = le32_to_cpu(rhead->flags); 10413d14c5d2SYehuda Sadeh 10423d14c5d2SYehuda Sadeh /* 10433d14c5d2SYehuda Sadeh * if this connection filled our message, drop our reference now, to 10443d14c5d2SYehuda Sadeh * avoid a (safe but slower) revoke later. 10453d14c5d2SYehuda Sadeh */ 10463d14c5d2SYehuda Sadeh if (req->r_con_filling_msg == con && req->r_reply == msg) { 10473d14c5d2SYehuda Sadeh dout(" dropping con_filling_msg ref %p\n", con); 10483d14c5d2SYehuda Sadeh req->r_con_filling_msg = NULL; 10493d14c5d2SYehuda Sadeh ceph_con_put(con); 10503d14c5d2SYehuda Sadeh } 10513d14c5d2SYehuda Sadeh 10523d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 10533d14c5d2SYehuda Sadeh unsigned bytes; 10543d14c5d2SYehuda Sadeh 10553d14c5d2SYehuda Sadeh req->r_result = le32_to_cpu(rhead->result); 10563d14c5d2SYehuda Sadeh bytes = le32_to_cpu(msg->hdr.data_len); 10573d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 10583d14c5d2SYehuda Sadeh bytes); 10593d14c5d2SYehuda Sadeh if (req->r_result == 0) 10603d14c5d2SYehuda Sadeh req->r_result = bytes; 10613d14c5d2SYehuda Sadeh 10623d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 10633d14c5d2SYehuda Sadeh req->r_reassert_version = rhead->reassert_version; 10643d14c5d2SYehuda Sadeh 10653d14c5d2SYehuda Sadeh req->r_got_reply = 1; 10663d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 10673d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 10683d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 10693d14c5d2SYehuda Sadeh goto done; 10703d14c5d2SYehuda Sadeh } 10713d14c5d2SYehuda Sadeh 10723d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 10733d14c5d2SYehuda Sadeh 10743d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 10753d14c5d2SYehuda Sadeh if (result < 0 || 10763d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 10773d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 10783d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 10793d14c5d2SYehuda Sadeh 10803d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 10813d14c5d2SYehuda Sadeh 10823d14c5d2SYehuda Sadeh if (req->r_callback) 10833d14c5d2SYehuda Sadeh req->r_callback(req, msg); 10843d14c5d2SYehuda Sadeh else 10853d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 10863d14c5d2SYehuda Sadeh 10873d14c5d2SYehuda Sadeh if (flags & CEPH_OSD_FLAG_ONDISK) { 10883d14c5d2SYehuda Sadeh if (req->r_safe_callback) 10893d14c5d2SYehuda Sadeh req->r_safe_callback(req, msg); 10903d14c5d2SYehuda Sadeh complete_all(&req->r_safe_completion); /* fsync waiter */ 10913d14c5d2SYehuda Sadeh } 10923d14c5d2SYehuda Sadeh 10933d14c5d2SYehuda Sadeh done: 10943d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 10953d14c5d2SYehuda Sadeh return; 10963d14c5d2SYehuda Sadeh 10973d14c5d2SYehuda Sadeh bad: 10983d14c5d2SYehuda Sadeh pr_err("corrupt osd_op_reply got %d %d expected %d\n", 10993d14c5d2SYehuda Sadeh (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len), 11003d14c5d2SYehuda Sadeh (int)sizeof(*rhead)); 11013d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 11023d14c5d2SYehuda Sadeh } 11033d14c5d2SYehuda Sadeh 11043d14c5d2SYehuda Sadeh 11053d14c5d2SYehuda Sadeh static int __kick_requests(struct ceph_osd_client *osdc, 11063d14c5d2SYehuda Sadeh struct ceph_osd *kickosd) 11073d14c5d2SYehuda Sadeh { 11083d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 11093d14c5d2SYehuda Sadeh struct rb_node *p, *n; 11103d14c5d2SYehuda Sadeh int needmap = 0; 11113d14c5d2SYehuda Sadeh int err; 11123d14c5d2SYehuda Sadeh 11133d14c5d2SYehuda Sadeh dout("kick_requests osd%d\n", kickosd ? kickosd->o_osd : -1); 11143d14c5d2SYehuda Sadeh if (kickosd) { 11153d14c5d2SYehuda Sadeh err = __reset_osd(osdc, kickosd); 11163d14c5d2SYehuda Sadeh if (err == -EAGAIN) 11173d14c5d2SYehuda Sadeh return 1; 11183d14c5d2SYehuda Sadeh } else { 11193d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 11203d14c5d2SYehuda Sadeh struct ceph_osd *osd = 11213d14c5d2SYehuda Sadeh rb_entry(p, struct ceph_osd, o_node); 11223d14c5d2SYehuda Sadeh 11233d14c5d2SYehuda Sadeh n = rb_next(p); 11243d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 11253d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 11263d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 11273d14c5d2SYehuda Sadeh osd->o_osd), 11283d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 11293d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 11303d14c5d2SYehuda Sadeh } 11313d14c5d2SYehuda Sadeh } 11323d14c5d2SYehuda Sadeh 11333d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->requests); p; p = rb_next(p)) { 11343d14c5d2SYehuda Sadeh req = rb_entry(p, struct ceph_osd_request, r_node); 11353d14c5d2SYehuda Sadeh 11363d14c5d2SYehuda Sadeh if (req->r_resend) { 11373d14c5d2SYehuda Sadeh dout(" r_resend set on tid %llu\n", req->r_tid); 11383d14c5d2SYehuda Sadeh __cancel_request(req); 11393d14c5d2SYehuda Sadeh goto kick; 11403d14c5d2SYehuda Sadeh } 11413d14c5d2SYehuda Sadeh if (req->r_osd && kickosd == req->r_osd) { 11423d14c5d2SYehuda Sadeh __cancel_request(req); 11433d14c5d2SYehuda Sadeh goto kick; 11443d14c5d2SYehuda Sadeh } 11453d14c5d2SYehuda Sadeh 11463d14c5d2SYehuda Sadeh err = __map_osds(osdc, req); 11473d14c5d2SYehuda Sadeh if (err == 0) 11483d14c5d2SYehuda Sadeh continue; /* no change */ 11493d14c5d2SYehuda Sadeh if (err < 0) { 11503d14c5d2SYehuda Sadeh /* 11513d14c5d2SYehuda Sadeh * FIXME: really, we should set the request 11523d14c5d2SYehuda Sadeh * error and fail if this isn't a 'nofail' 11533d14c5d2SYehuda Sadeh * request, but that's a fair bit more 11543d14c5d2SYehuda Sadeh * complicated to do. So retry! 11553d14c5d2SYehuda Sadeh */ 11563d14c5d2SYehuda Sadeh dout(" setting r_resend on %llu\n", req->r_tid); 11573d14c5d2SYehuda Sadeh req->r_resend = true; 11583d14c5d2SYehuda Sadeh continue; 11593d14c5d2SYehuda Sadeh } 11603d14c5d2SYehuda Sadeh if (req->r_osd == NULL) { 11613d14c5d2SYehuda Sadeh dout("tid %llu maps to no valid osd\n", req->r_tid); 11623d14c5d2SYehuda Sadeh needmap++; /* request a newer map */ 11633d14c5d2SYehuda Sadeh continue; 11643d14c5d2SYehuda Sadeh } 11653d14c5d2SYehuda Sadeh 11663d14c5d2SYehuda Sadeh kick: 11673d14c5d2SYehuda Sadeh dout("kicking %p tid %llu osd%d\n", req, req->r_tid, 11683d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 11693d14c5d2SYehuda Sadeh req->r_flags |= CEPH_OSD_FLAG_RETRY; 11703d14c5d2SYehuda Sadeh err = __send_request(osdc, req); 11713d14c5d2SYehuda Sadeh if (err) { 11723d14c5d2SYehuda Sadeh dout(" setting r_resend on %llu\n", req->r_tid); 11733d14c5d2SYehuda Sadeh req->r_resend = true; 11743d14c5d2SYehuda Sadeh } 11753d14c5d2SYehuda Sadeh } 11763d14c5d2SYehuda Sadeh 11773d14c5d2SYehuda Sadeh return needmap; 11783d14c5d2SYehuda Sadeh } 11793d14c5d2SYehuda Sadeh 11803d14c5d2SYehuda Sadeh /* 11813d14c5d2SYehuda Sadeh * Resubmit osd requests whose osd or osd address has changed. Request 11823d14c5d2SYehuda Sadeh * a new osd map if osds are down, or we are otherwise unable to determine 11833d14c5d2SYehuda Sadeh * how to direct a request. 11843d14c5d2SYehuda Sadeh * 11853d14c5d2SYehuda Sadeh * Close connections to down osds. 11863d14c5d2SYehuda Sadeh * 11873d14c5d2SYehuda Sadeh * If @who is specified, resubmit requests for that specific osd. 11883d14c5d2SYehuda Sadeh * 11893d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 11903d14c5d2SYehuda Sadeh */ 11913d14c5d2SYehuda Sadeh static void kick_requests(struct ceph_osd_client *osdc, 11923d14c5d2SYehuda Sadeh struct ceph_osd *kickosd) 11933d14c5d2SYehuda Sadeh { 11943d14c5d2SYehuda Sadeh int needmap; 11953d14c5d2SYehuda Sadeh 11963d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 11973d14c5d2SYehuda Sadeh needmap = __kick_requests(osdc, kickosd); 11983d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 11993d14c5d2SYehuda Sadeh 12003d14c5d2SYehuda Sadeh if (needmap) { 12013d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 12023d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 12033d14c5d2SYehuda Sadeh } 12043d14c5d2SYehuda Sadeh 12053d14c5d2SYehuda Sadeh } 12063d14c5d2SYehuda Sadeh /* 12073d14c5d2SYehuda Sadeh * Process updated osd map. 12083d14c5d2SYehuda Sadeh * 12093d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 12103d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 12113d14c5d2SYehuda Sadeh * off to different OSDs as needed. 12123d14c5d2SYehuda Sadeh */ 12133d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 12143d14c5d2SYehuda Sadeh { 12153d14c5d2SYehuda Sadeh void *p, *end, *next; 12163d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 12173d14c5d2SYehuda Sadeh u32 epoch; 12183d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 12193d14c5d2SYehuda Sadeh int err; 12203d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 12213d14c5d2SYehuda Sadeh 12223d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 12233d14c5d2SYehuda Sadeh p = msg->front.iov_base; 12243d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 12253d14c5d2SYehuda Sadeh 12263d14c5d2SYehuda Sadeh /* verify fsid */ 12273d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 12283d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 12293d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 12303d14c5d2SYehuda Sadeh return; 12313d14c5d2SYehuda Sadeh 12323d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 12333d14c5d2SYehuda Sadeh 12343d14c5d2SYehuda Sadeh /* incremental maps */ 12353d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 12363d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 12373d14c5d2SYehuda Sadeh while (nr_maps > 0) { 12383d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 12393d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 12403d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 12413d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 12423d14c5d2SYehuda Sadeh next = p + maplen; 12433d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 12443d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 12453d14c5d2SYehuda Sadeh epoch, maplen); 12463d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 12473d14c5d2SYehuda Sadeh osdc->osdmap, 12483d14c5d2SYehuda Sadeh osdc->client->msgr); 12493d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 12503d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 12513d14c5d2SYehuda Sadeh goto bad; 12523d14c5d2SYehuda Sadeh } 12533d14c5d2SYehuda Sadeh BUG_ON(!newmap); 12543d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 12553d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 12563d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 12573d14c5d2SYehuda Sadeh } 12583d14c5d2SYehuda Sadeh } else { 12593d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 12603d14c5d2SYehuda Sadeh epoch, maplen); 12613d14c5d2SYehuda Sadeh } 12623d14c5d2SYehuda Sadeh p = next; 12633d14c5d2SYehuda Sadeh nr_maps--; 12643d14c5d2SYehuda Sadeh } 12653d14c5d2SYehuda Sadeh if (newmap) 12663d14c5d2SYehuda Sadeh goto done; 12673d14c5d2SYehuda Sadeh 12683d14c5d2SYehuda Sadeh /* full maps */ 12693d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 12703d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 12713d14c5d2SYehuda Sadeh while (nr_maps) { 12723d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 12733d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 12743d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 12753d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 12763d14c5d2SYehuda Sadeh if (nr_maps > 1) { 12773d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 12783d14c5d2SYehuda Sadeh epoch, maplen); 12793d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 12803d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 12813d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 12823d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 12833d14c5d2SYehuda Sadeh } else { 12843d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 12853d14c5d2SYehuda Sadeh newmap = osdmap_decode(&p, p+maplen); 12863d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 12873d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 12883d14c5d2SYehuda Sadeh goto bad; 12893d14c5d2SYehuda Sadeh } 12903d14c5d2SYehuda Sadeh BUG_ON(!newmap); 12913d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 12923d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 12933d14c5d2SYehuda Sadeh if (oldmap) 12943d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 12953d14c5d2SYehuda Sadeh } 12963d14c5d2SYehuda Sadeh p += maplen; 12973d14c5d2SYehuda Sadeh nr_maps--; 12983d14c5d2SYehuda Sadeh } 12993d14c5d2SYehuda Sadeh 13003d14c5d2SYehuda Sadeh done: 13013d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 13023d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 13033d14c5d2SYehuda Sadeh if (newmap) 13043d14c5d2SYehuda Sadeh kick_requests(osdc, NULL); 13053d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 13063d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 13073d14c5d2SYehuda Sadeh return; 13083d14c5d2SYehuda Sadeh 13093d14c5d2SYehuda Sadeh bad: 13103d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 13113d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 13123d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 13133d14c5d2SYehuda Sadeh return; 13143d14c5d2SYehuda Sadeh } 13153d14c5d2SYehuda Sadeh 13163d14c5d2SYehuda Sadeh /* 13173d14c5d2SYehuda Sadeh * Register request, send initial attempt. 13183d14c5d2SYehuda Sadeh */ 13193d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 13203d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 13213d14c5d2SYehuda Sadeh bool nofail) 13223d14c5d2SYehuda Sadeh { 13233d14c5d2SYehuda Sadeh int rc = 0; 13243d14c5d2SYehuda Sadeh 13253d14c5d2SYehuda Sadeh req->r_request->pages = req->r_pages; 13263d14c5d2SYehuda Sadeh req->r_request->nr_pages = req->r_num_pages; 13273d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 13283d14c5d2SYehuda Sadeh req->r_request->bio = req->r_bio; 13293d14c5d2SYehuda Sadeh #endif 13303d14c5d2SYehuda Sadeh req->r_request->trail = req->r_trail; 13313d14c5d2SYehuda Sadeh 13323d14c5d2SYehuda Sadeh register_request(osdc, req); 13333d14c5d2SYehuda Sadeh 13343d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 13353d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 13363d14c5d2SYehuda Sadeh /* 13373d14c5d2SYehuda Sadeh * a racing kick_requests() may have sent the message for us 13383d14c5d2SYehuda Sadeh * while we dropped request_mutex above, so only send now if 13393d14c5d2SYehuda Sadeh * the request still han't been touched yet. 13403d14c5d2SYehuda Sadeh */ 13413d14c5d2SYehuda Sadeh if (req->r_sent == 0) { 13423d14c5d2SYehuda Sadeh rc = __send_request(osdc, req); 13433d14c5d2SYehuda Sadeh if (rc) { 13443d14c5d2SYehuda Sadeh if (nofail) { 13453d14c5d2SYehuda Sadeh dout("osdc_start_request failed send, " 13463d14c5d2SYehuda Sadeh " marking %lld\n", req->r_tid); 13473d14c5d2SYehuda Sadeh req->r_resend = true; 13483d14c5d2SYehuda Sadeh rc = 0; 13493d14c5d2SYehuda Sadeh } else { 13503d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 13513d14c5d2SYehuda Sadeh } 13523d14c5d2SYehuda Sadeh } 13533d14c5d2SYehuda Sadeh } 13543d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 13553d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 13563d14c5d2SYehuda Sadeh return rc; 13573d14c5d2SYehuda Sadeh } 13583d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 13593d14c5d2SYehuda Sadeh 13603d14c5d2SYehuda Sadeh /* 13613d14c5d2SYehuda Sadeh * wait for a request to complete 13623d14c5d2SYehuda Sadeh */ 13633d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 13643d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 13653d14c5d2SYehuda Sadeh { 13663d14c5d2SYehuda Sadeh int rc; 13673d14c5d2SYehuda Sadeh 13683d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 13693d14c5d2SYehuda Sadeh if (rc < 0) { 13703d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 13713d14c5d2SYehuda Sadeh __cancel_request(req); 13723d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 13733d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 13743d14c5d2SYehuda Sadeh dout("wait_request tid %llu canceled/timed out\n", req->r_tid); 13753d14c5d2SYehuda Sadeh return rc; 13763d14c5d2SYehuda Sadeh } 13773d14c5d2SYehuda Sadeh 13783d14c5d2SYehuda Sadeh dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); 13793d14c5d2SYehuda Sadeh return req->r_result; 13803d14c5d2SYehuda Sadeh } 13813d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 13823d14c5d2SYehuda Sadeh 13833d14c5d2SYehuda Sadeh /* 13843d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 13853d14c5d2SYehuda Sadeh */ 13863d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 13873d14c5d2SYehuda Sadeh { 13883d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 13893d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 13903d14c5d2SYehuda Sadeh 13913d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 13923d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 13933d14c5d2SYehuda Sadeh while (1) { 13943d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 13953d14c5d2SYehuda Sadeh if (!req) 13963d14c5d2SYehuda Sadeh break; 13973d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 13983d14c5d2SYehuda Sadeh break; 13993d14c5d2SYehuda Sadeh 14003d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 14013d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 14023d14c5d2SYehuda Sadeh continue; 14033d14c5d2SYehuda Sadeh 14043d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 14053d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14063d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 14073d14c5d2SYehuda Sadeh req->r_tid, last_tid); 14083d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 14093d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 14103d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 14113d14c5d2SYehuda Sadeh } 14123d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14133d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 14143d14c5d2SYehuda Sadeh } 14153d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 14163d14c5d2SYehuda Sadeh 14173d14c5d2SYehuda Sadeh /* 14183d14c5d2SYehuda Sadeh * init, shutdown 14193d14c5d2SYehuda Sadeh */ 14203d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 14213d14c5d2SYehuda Sadeh { 14223d14c5d2SYehuda Sadeh int err; 14233d14c5d2SYehuda Sadeh 14243d14c5d2SYehuda Sadeh dout("init\n"); 14253d14c5d2SYehuda Sadeh osdc->client = client; 14263d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 14273d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 14283d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 14293d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 14303d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 14313d14c5d2SYehuda Sadeh osdc->last_tid = 0; 14323d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 14333d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 14343d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 14353d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 14363d14c5d2SYehuda Sadeh osdc->num_requests = 0; 14373d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 14383d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 14393d14c5d2SYehuda Sadeh 14403d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 14413d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 14423d14c5d2SYehuda Sadeh 14433d14c5d2SYehuda Sadeh err = -ENOMEM; 14443d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 14453d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 14463d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 14473d14c5d2SYehuda Sadeh goto out; 14483d14c5d2SYehuda Sadeh 14493d14c5d2SYehuda Sadeh err = ceph_msgpool_init(&osdc->msgpool_op, OSD_OP_FRONT_LEN, 10, true, 14503d14c5d2SYehuda Sadeh "osd_op"); 14513d14c5d2SYehuda Sadeh if (err < 0) 14523d14c5d2SYehuda Sadeh goto out_mempool; 14533d14c5d2SYehuda Sadeh err = ceph_msgpool_init(&osdc->msgpool_op_reply, 14543d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 14553d14c5d2SYehuda Sadeh "osd_op_reply"); 14563d14c5d2SYehuda Sadeh if (err < 0) 14573d14c5d2SYehuda Sadeh goto out_msgpool; 14583d14c5d2SYehuda Sadeh return 0; 14593d14c5d2SYehuda Sadeh 14603d14c5d2SYehuda Sadeh out_msgpool: 14613d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 14623d14c5d2SYehuda Sadeh out_mempool: 14633d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 14643d14c5d2SYehuda Sadeh out: 14653d14c5d2SYehuda Sadeh return err; 14663d14c5d2SYehuda Sadeh } 14673d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_init); 14683d14c5d2SYehuda Sadeh 14693d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 14703d14c5d2SYehuda Sadeh { 14713d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 14723d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 14733d14c5d2SYehuda Sadeh if (osdc->osdmap) { 14743d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 14753d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 14763d14c5d2SYehuda Sadeh } 14773d14c5d2SYehuda Sadeh remove_old_osds(osdc, 1); 14783d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 14793d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 14803d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 14813d14c5d2SYehuda Sadeh } 14823d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_stop); 14833d14c5d2SYehuda Sadeh 14843d14c5d2SYehuda Sadeh /* 14853d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 14863d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 14873d14c5d2SYehuda Sadeh */ 14883d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 14893d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 14903d14c5d2SYehuda Sadeh u64 off, u64 *plen, 14913d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 14923d14c5d2SYehuda Sadeh struct page **pages, int num_pages) 14933d14c5d2SYehuda Sadeh { 14943d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 14953d14c5d2SYehuda Sadeh int rc = 0; 14963d14c5d2SYehuda Sadeh 14973d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 14983d14c5d2SYehuda Sadeh vino.snap, off, *plen); 14993d14c5d2SYehuda Sadeh req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 15003d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 15013d14c5d2SYehuda Sadeh NULL, 0, truncate_seq, truncate_size, NULL, 15023d14c5d2SYehuda Sadeh false, 1); 15033d14c5d2SYehuda Sadeh if (!req) 15043d14c5d2SYehuda Sadeh return -ENOMEM; 15053d14c5d2SYehuda Sadeh 15063d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 15073d14c5d2SYehuda Sadeh req->r_pages = pages; 15083d14c5d2SYehuda Sadeh 15093d14c5d2SYehuda Sadeh dout("readpages final extent is %llu~%llu (%d pages)\n", 15103d14c5d2SYehuda Sadeh off, *plen, req->r_num_pages); 15113d14c5d2SYehuda Sadeh 15123d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 15133d14c5d2SYehuda Sadeh if (!rc) 15143d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 15153d14c5d2SYehuda Sadeh 15163d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 15173d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 15183d14c5d2SYehuda Sadeh return rc; 15193d14c5d2SYehuda Sadeh } 15203d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 15213d14c5d2SYehuda Sadeh 15223d14c5d2SYehuda Sadeh /* 15233d14c5d2SYehuda Sadeh * do a synchronous write on N pages 15243d14c5d2SYehuda Sadeh */ 15253d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 15263d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 15273d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 15283d14c5d2SYehuda Sadeh u64 off, u64 len, 15293d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 15303d14c5d2SYehuda Sadeh struct timespec *mtime, 15313d14c5d2SYehuda Sadeh struct page **pages, int num_pages, 15323d14c5d2SYehuda Sadeh int flags, int do_sync, bool nofail) 15333d14c5d2SYehuda Sadeh { 15343d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 15353d14c5d2SYehuda Sadeh int rc = 0; 15363d14c5d2SYehuda Sadeh 15373d14c5d2SYehuda Sadeh BUG_ON(vino.snap != CEPH_NOSNAP); 15383d14c5d2SYehuda Sadeh req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 15393d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 15403d14c5d2SYehuda Sadeh flags | CEPH_OSD_FLAG_ONDISK | 15413d14c5d2SYehuda Sadeh CEPH_OSD_FLAG_WRITE, 15423d14c5d2SYehuda Sadeh snapc, do_sync, 15433d14c5d2SYehuda Sadeh truncate_seq, truncate_size, mtime, 15443d14c5d2SYehuda Sadeh nofail, 1); 15453d14c5d2SYehuda Sadeh if (!req) 15463d14c5d2SYehuda Sadeh return -ENOMEM; 15473d14c5d2SYehuda Sadeh 15483d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 15493d14c5d2SYehuda Sadeh req->r_pages = pages; 15503d14c5d2SYehuda Sadeh dout("writepages %llu~%llu (%d pages)\n", off, len, 15513d14c5d2SYehuda Sadeh req->r_num_pages); 15523d14c5d2SYehuda Sadeh 15533d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, nofail); 15543d14c5d2SYehuda Sadeh if (!rc) 15553d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 15563d14c5d2SYehuda Sadeh 15573d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 15583d14c5d2SYehuda Sadeh if (rc == 0) 15593d14c5d2SYehuda Sadeh rc = len; 15603d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 15613d14c5d2SYehuda Sadeh return rc; 15623d14c5d2SYehuda Sadeh } 15633d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 15643d14c5d2SYehuda Sadeh 15653d14c5d2SYehuda Sadeh /* 15663d14c5d2SYehuda Sadeh * handle incoming message 15673d14c5d2SYehuda Sadeh */ 15683d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 15693d14c5d2SYehuda Sadeh { 15703d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 15713d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 15723d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 15733d14c5d2SYehuda Sadeh 15743d14c5d2SYehuda Sadeh if (!osd) 15753d14c5d2SYehuda Sadeh goto out; 15763d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 15773d14c5d2SYehuda Sadeh 15783d14c5d2SYehuda Sadeh switch (type) { 15793d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 15803d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 15813d14c5d2SYehuda Sadeh break; 15823d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 15833d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 15843d14c5d2SYehuda Sadeh break; 15853d14c5d2SYehuda Sadeh 15863d14c5d2SYehuda Sadeh default: 15873d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 15883d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 15893d14c5d2SYehuda Sadeh } 15903d14c5d2SYehuda Sadeh out: 15913d14c5d2SYehuda Sadeh ceph_msg_put(msg); 15923d14c5d2SYehuda Sadeh } 15933d14c5d2SYehuda Sadeh 15943d14c5d2SYehuda Sadeh /* 15953d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 15963d14c5d2SYehuda Sadeh * pages. 15973d14c5d2SYehuda Sadeh */ 15983d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 15993d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 16003d14c5d2SYehuda Sadeh int *skip) 16013d14c5d2SYehuda Sadeh { 16023d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 16033d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 16043d14c5d2SYehuda Sadeh struct ceph_msg *m; 16053d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 16063d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 16073d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 16083d14c5d2SYehuda Sadeh u64 tid; 16093d14c5d2SYehuda Sadeh 16103d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 16113d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 16123d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 16133d14c5d2SYehuda Sadeh if (!req) { 16143d14c5d2SYehuda Sadeh *skip = 1; 16153d14c5d2SYehuda Sadeh m = NULL; 16163d14c5d2SYehuda Sadeh pr_info("get_reply unknown tid %llu from osd%d\n", tid, 16173d14c5d2SYehuda Sadeh osd->o_osd); 16183d14c5d2SYehuda Sadeh goto out; 16193d14c5d2SYehuda Sadeh } 16203d14c5d2SYehuda Sadeh 16213d14c5d2SYehuda Sadeh if (req->r_con_filling_msg) { 16223d14c5d2SYehuda Sadeh dout("get_reply revoking msg %p from old con %p\n", 16233d14c5d2SYehuda Sadeh req->r_reply, req->r_con_filling_msg); 16243d14c5d2SYehuda Sadeh ceph_con_revoke_message(req->r_con_filling_msg, req->r_reply); 16253d14c5d2SYehuda Sadeh ceph_con_put(req->r_con_filling_msg); 16263d14c5d2SYehuda Sadeh req->r_con_filling_msg = NULL; 16273d14c5d2SYehuda Sadeh } 16283d14c5d2SYehuda Sadeh 16293d14c5d2SYehuda Sadeh if (front > req->r_reply->front.iov_len) { 16303d14c5d2SYehuda Sadeh pr_warning("get_reply front %d > preallocated %d\n", 16313d14c5d2SYehuda Sadeh front, (int)req->r_reply->front.iov_len); 16323d14c5d2SYehuda Sadeh m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS); 16333d14c5d2SYehuda Sadeh if (!m) 16343d14c5d2SYehuda Sadeh goto out; 16353d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 16363d14c5d2SYehuda Sadeh req->r_reply = m; 16373d14c5d2SYehuda Sadeh } 16383d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 16393d14c5d2SYehuda Sadeh 16403d14c5d2SYehuda Sadeh if (data_len > 0) { 16413d14c5d2SYehuda Sadeh unsigned data_off = le16_to_cpu(hdr->data_off); 16423d14c5d2SYehuda Sadeh int want = calc_pages_for(data_off & ~PAGE_MASK, data_len); 16433d14c5d2SYehuda Sadeh 16443d14c5d2SYehuda Sadeh if (unlikely(req->r_num_pages < want)) { 16453d14c5d2SYehuda Sadeh pr_warning("tid %lld reply %d > expected %d pages\n", 16463d14c5d2SYehuda Sadeh tid, want, m->nr_pages); 16473d14c5d2SYehuda Sadeh *skip = 1; 16483d14c5d2SYehuda Sadeh ceph_msg_put(m); 16493d14c5d2SYehuda Sadeh m = NULL; 16503d14c5d2SYehuda Sadeh goto out; 16513d14c5d2SYehuda Sadeh } 16523d14c5d2SYehuda Sadeh m->pages = req->r_pages; 16533d14c5d2SYehuda Sadeh m->nr_pages = req->r_num_pages; 16543d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 16553d14c5d2SYehuda Sadeh m->bio = req->r_bio; 16563d14c5d2SYehuda Sadeh #endif 16573d14c5d2SYehuda Sadeh } 16583d14c5d2SYehuda Sadeh *skip = 0; 16593d14c5d2SYehuda Sadeh req->r_con_filling_msg = ceph_con_get(con); 16603d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 16613d14c5d2SYehuda Sadeh 16623d14c5d2SYehuda Sadeh out: 16633d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 16643d14c5d2SYehuda Sadeh return m; 16653d14c5d2SYehuda Sadeh 16663d14c5d2SYehuda Sadeh } 16673d14c5d2SYehuda Sadeh 16683d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 16693d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 16703d14c5d2SYehuda Sadeh int *skip) 16713d14c5d2SYehuda Sadeh { 16723d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 16733d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 16743d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 16753d14c5d2SYehuda Sadeh 16763d14c5d2SYehuda Sadeh switch (type) { 16773d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 16783d14c5d2SYehuda Sadeh return ceph_msg_new(type, front, GFP_NOFS); 16793d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 16803d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 16813d14c5d2SYehuda Sadeh default: 16823d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 16833d14c5d2SYehuda Sadeh osd->o_osd); 16843d14c5d2SYehuda Sadeh *skip = 1; 16853d14c5d2SYehuda Sadeh return NULL; 16863d14c5d2SYehuda Sadeh } 16873d14c5d2SYehuda Sadeh } 16883d14c5d2SYehuda Sadeh 16893d14c5d2SYehuda Sadeh /* 16903d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 16913d14c5d2SYehuda Sadeh */ 16923d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 16933d14c5d2SYehuda Sadeh { 16943d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 16953d14c5d2SYehuda Sadeh if (get_osd(osd)) 16963d14c5d2SYehuda Sadeh return con; 16973d14c5d2SYehuda Sadeh return NULL; 16983d14c5d2SYehuda Sadeh } 16993d14c5d2SYehuda Sadeh 17003d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 17013d14c5d2SYehuda Sadeh { 17023d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 17033d14c5d2SYehuda Sadeh put_osd(osd); 17043d14c5d2SYehuda Sadeh } 17053d14c5d2SYehuda Sadeh 17063d14c5d2SYehuda Sadeh /* 17073d14c5d2SYehuda Sadeh * authentication 17083d14c5d2SYehuda Sadeh */ 17093d14c5d2SYehuda Sadeh static int get_authorizer(struct ceph_connection *con, 17103d14c5d2SYehuda Sadeh void **buf, int *len, int *proto, 17113d14c5d2SYehuda Sadeh void **reply_buf, int *reply_len, int force_new) 17123d14c5d2SYehuda Sadeh { 17133d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 17143d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 17153d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 17163d14c5d2SYehuda Sadeh int ret = 0; 17173d14c5d2SYehuda Sadeh 17183d14c5d2SYehuda Sadeh if (force_new && o->o_authorizer) { 17193d14c5d2SYehuda Sadeh ac->ops->destroy_authorizer(ac, o->o_authorizer); 17203d14c5d2SYehuda Sadeh o->o_authorizer = NULL; 17213d14c5d2SYehuda Sadeh } 17223d14c5d2SYehuda Sadeh if (o->o_authorizer == NULL) { 17233d14c5d2SYehuda Sadeh ret = ac->ops->create_authorizer( 17243d14c5d2SYehuda Sadeh ac, CEPH_ENTITY_TYPE_OSD, 17253d14c5d2SYehuda Sadeh &o->o_authorizer, 17263d14c5d2SYehuda Sadeh &o->o_authorizer_buf, 17273d14c5d2SYehuda Sadeh &o->o_authorizer_buf_len, 17283d14c5d2SYehuda Sadeh &o->o_authorizer_reply_buf, 17293d14c5d2SYehuda Sadeh &o->o_authorizer_reply_buf_len); 17303d14c5d2SYehuda Sadeh if (ret) 17313d14c5d2SYehuda Sadeh return ret; 17323d14c5d2SYehuda Sadeh } 17333d14c5d2SYehuda Sadeh 17343d14c5d2SYehuda Sadeh *proto = ac->protocol; 17353d14c5d2SYehuda Sadeh *buf = o->o_authorizer_buf; 17363d14c5d2SYehuda Sadeh *len = o->o_authorizer_buf_len; 17373d14c5d2SYehuda Sadeh *reply_buf = o->o_authorizer_reply_buf; 17383d14c5d2SYehuda Sadeh *reply_len = o->o_authorizer_reply_buf_len; 17393d14c5d2SYehuda Sadeh return 0; 17403d14c5d2SYehuda Sadeh } 17413d14c5d2SYehuda Sadeh 17423d14c5d2SYehuda Sadeh 17433d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 17443d14c5d2SYehuda Sadeh { 17453d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 17463d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 17473d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 17483d14c5d2SYehuda Sadeh 17493d14c5d2SYehuda Sadeh return ac->ops->verify_authorizer_reply(ac, o->o_authorizer, len); 17503d14c5d2SYehuda Sadeh } 17513d14c5d2SYehuda Sadeh 17523d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 17533d14c5d2SYehuda Sadeh { 17543d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 17553d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 17563d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 17573d14c5d2SYehuda Sadeh 17583d14c5d2SYehuda Sadeh if (ac->ops->invalidate_authorizer) 17593d14c5d2SYehuda Sadeh ac->ops->invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 17603d14c5d2SYehuda Sadeh 17613d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 17623d14c5d2SYehuda Sadeh } 17633d14c5d2SYehuda Sadeh 17643d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 17653d14c5d2SYehuda Sadeh .get = get_osd_con, 17663d14c5d2SYehuda Sadeh .put = put_osd_con, 17673d14c5d2SYehuda Sadeh .dispatch = dispatch, 17683d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 17693d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 17703d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 17713d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 17723d14c5d2SYehuda Sadeh .fault = osd_reset, 17733d14c5d2SYehuda Sadeh }; 1774