1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 2a4ce40a9SAlex Elder 33d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 43d14c5d2SYehuda Sadeh 53d14c5d2SYehuda Sadeh #include <linux/module.h> 63d14c5d2SYehuda Sadeh #include <linux/err.h> 73d14c5d2SYehuda Sadeh #include <linux/highmem.h> 83d14c5d2SYehuda Sadeh #include <linux/mm.h> 93d14c5d2SYehuda Sadeh #include <linux/pagemap.h> 103d14c5d2SYehuda Sadeh #include <linux/slab.h> 113d14c5d2SYehuda Sadeh #include <linux/uaccess.h> 123d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 133d14c5d2SYehuda Sadeh #include <linux/bio.h> 143d14c5d2SYehuda Sadeh #endif 153d14c5d2SYehuda Sadeh 168cb441c0SIlya Dryomov #include <linux/ceph/ceph_features.h> 173d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 183d14c5d2SYehuda Sadeh #include <linux/ceph/osd_client.h> 193d14c5d2SYehuda Sadeh #include <linux/ceph/messenger.h> 203d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 213d14c5d2SYehuda Sadeh #include <linux/ceph/auth.h> 223d14c5d2SYehuda Sadeh #include <linux/ceph/pagelist.h> 2308c1ac50SIlya Dryomov #include <linux/ceph/striper.h> 243d14c5d2SYehuda Sadeh 253d14c5d2SYehuda Sadeh #define OSD_OPREPLY_FRONT_LEN 512 263d14c5d2SYehuda Sadeh 275522ae0bSAlex Elder static struct kmem_cache *ceph_osd_request_cache; 285522ae0bSAlex Elder 293d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops; 303d14c5d2SYehuda Sadeh 313d14c5d2SYehuda Sadeh /* 323d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 333d14c5d2SYehuda Sadeh * 343d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 353d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 363d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 373d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 383d14c5d2SYehuda Sadeh * access to storage. 393d14c5d2SYehuda Sadeh * 403d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 413d14c5d2SYehuda Sadeh * are described by the osd map. 423d14c5d2SYehuda Sadeh * 433d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 443d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 453d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 463d14c5d2SYehuda Sadeh * channel with an OSD is reset. 473d14c5d2SYehuda Sadeh */ 483d14c5d2SYehuda Sadeh 495aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req); 505aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req); 51922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 52922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq); 53922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 54922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq); 55a02a946dSIlya Dryomov static void clear_backoffs(struct ceph_osd *osd); 565aea3dcdSIlya Dryomov 575aea3dcdSIlya Dryomov #if 1 585aea3dcdSIlya Dryomov static inline bool rwsem_is_wrlocked(struct rw_semaphore *sem) 595aea3dcdSIlya Dryomov { 605aea3dcdSIlya Dryomov bool wrlocked = true; 615aea3dcdSIlya Dryomov 625aea3dcdSIlya Dryomov if (unlikely(down_read_trylock(sem))) { 635aea3dcdSIlya Dryomov wrlocked = false; 645aea3dcdSIlya Dryomov up_read(sem); 655aea3dcdSIlya Dryomov } 665aea3dcdSIlya Dryomov 675aea3dcdSIlya Dryomov return wrlocked; 685aea3dcdSIlya Dryomov } 695aea3dcdSIlya Dryomov static inline void verify_osdc_locked(struct ceph_osd_client *osdc) 705aea3dcdSIlya Dryomov { 715aea3dcdSIlya Dryomov WARN_ON(!rwsem_is_locked(&osdc->lock)); 725aea3dcdSIlya Dryomov } 735aea3dcdSIlya Dryomov static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) 745aea3dcdSIlya Dryomov { 755aea3dcdSIlya Dryomov WARN_ON(!rwsem_is_wrlocked(&osdc->lock)); 765aea3dcdSIlya Dryomov } 775aea3dcdSIlya Dryomov static inline void verify_osd_locked(struct ceph_osd *osd) 785aea3dcdSIlya Dryomov { 795aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 805aea3dcdSIlya Dryomov 815aea3dcdSIlya Dryomov WARN_ON(!(mutex_is_locked(&osd->lock) && 825aea3dcdSIlya Dryomov rwsem_is_locked(&osdc->lock)) && 835aea3dcdSIlya Dryomov !rwsem_is_wrlocked(&osdc->lock)); 845aea3dcdSIlya Dryomov } 85922dab61SIlya Dryomov static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) 86922dab61SIlya Dryomov { 87922dab61SIlya Dryomov WARN_ON(!mutex_is_locked(&lreq->lock)); 88922dab61SIlya Dryomov } 895aea3dcdSIlya Dryomov #else 905aea3dcdSIlya Dryomov static inline void verify_osdc_locked(struct ceph_osd_client *osdc) { } 915aea3dcdSIlya Dryomov static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) { } 925aea3dcdSIlya Dryomov static inline void verify_osd_locked(struct ceph_osd *osd) { } 93922dab61SIlya Dryomov static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) { } 945aea3dcdSIlya Dryomov #endif 955aea3dcdSIlya Dryomov 963d14c5d2SYehuda Sadeh /* 973d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 983d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 993d14c5d2SYehuda Sadeh * object boundary. 1003d14c5d2SYehuda Sadeh * 1013d14c5d2SYehuda Sadeh * fill osd op in request message. 1023d14c5d2SYehuda Sadeh */ 103dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 104a19dadfbSAlex Elder u64 *objnum, u64 *objoff, u64 *objlen) 1053d14c5d2SYehuda Sadeh { 10660e56f13SAlex Elder u64 orig_len = *plen; 107dccbf080SIlya Dryomov u32 xlen; 1083d14c5d2SYehuda Sadeh 10960e56f13SAlex Elder /* object extent? */ 110dccbf080SIlya Dryomov ceph_calc_file_object_mapping(layout, off, orig_len, objnum, 111dccbf080SIlya Dryomov objoff, &xlen); 112dccbf080SIlya Dryomov *objlen = xlen; 11375d1c941SAlex Elder if (*objlen < orig_len) { 11475d1c941SAlex Elder *plen = *objlen; 11560e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 11660e56f13SAlex Elder orig_len - *plen, off, *plen); 11760e56f13SAlex Elder } 11860e56f13SAlex Elder 11975d1c941SAlex Elder dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); 1203ff5f385SAlex Elder return 0; 1213d14c5d2SYehuda Sadeh } 1223d14c5d2SYehuda Sadeh 123c54d47bfSAlex Elder static void ceph_osd_data_init(struct ceph_osd_data *osd_data) 124c54d47bfSAlex Elder { 125c54d47bfSAlex Elder memset(osd_data, 0, sizeof (*osd_data)); 126c54d47bfSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_NONE; 127c54d47bfSAlex Elder } 128c54d47bfSAlex Elder 129a4ce40a9SAlex Elder static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, 13043bfe5deSAlex Elder struct page **pages, u64 length, u32 alignment, 13143bfe5deSAlex Elder bool pages_from_pool, bool own_pages) 13243bfe5deSAlex Elder { 13343bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 13443bfe5deSAlex Elder osd_data->pages = pages; 13543bfe5deSAlex Elder osd_data->length = length; 13643bfe5deSAlex Elder osd_data->alignment = alignment; 13743bfe5deSAlex Elder osd_data->pages_from_pool = pages_from_pool; 13843bfe5deSAlex Elder osd_data->own_pages = own_pages; 13943bfe5deSAlex Elder } 14043bfe5deSAlex Elder 141a4ce40a9SAlex Elder static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, 14243bfe5deSAlex Elder struct ceph_pagelist *pagelist) 14343bfe5deSAlex Elder { 14443bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; 14543bfe5deSAlex Elder osd_data->pagelist = pagelist; 14643bfe5deSAlex Elder } 14743bfe5deSAlex Elder 14843bfe5deSAlex Elder #ifdef CONFIG_BLOCK 149a4ce40a9SAlex Elder static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 1505359a17dSIlya Dryomov struct ceph_bio_iter *bio_pos, 1515359a17dSIlya Dryomov u32 bio_length) 15243bfe5deSAlex Elder { 15343bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_BIO; 1545359a17dSIlya Dryomov osd_data->bio_pos = *bio_pos; 15543bfe5deSAlex Elder osd_data->bio_length = bio_length; 15643bfe5deSAlex Elder } 15743bfe5deSAlex Elder #endif /* CONFIG_BLOCK */ 15843bfe5deSAlex Elder 159b9e281c2SIlya Dryomov static void ceph_osd_data_bvecs_init(struct ceph_osd_data *osd_data, 1600010f705SIlya Dryomov struct ceph_bvec_iter *bvec_pos, 1610010f705SIlya Dryomov u32 num_bvecs) 162b9e281c2SIlya Dryomov { 163b9e281c2SIlya Dryomov osd_data->type = CEPH_OSD_DATA_TYPE_BVECS; 164b9e281c2SIlya Dryomov osd_data->bvec_pos = *bvec_pos; 1650010f705SIlya Dryomov osd_data->num_bvecs = num_bvecs; 166b9e281c2SIlya Dryomov } 167b9e281c2SIlya Dryomov 168863c7eb5SAlex Elder #define osd_req_op_data(oreq, whch, typ, fld) \ 169863c7eb5SAlex Elder ({ \ 1708a703a38SIoana Ciornei struct ceph_osd_request *__oreq = (oreq); \ 1718a703a38SIoana Ciornei unsigned int __whch = (whch); \ 1728a703a38SIoana Ciornei BUG_ON(__whch >= __oreq->r_num_ops); \ 1738a703a38SIoana Ciornei &__oreq->r_ops[__whch].typ.fld; \ 174863c7eb5SAlex Elder }) 175863c7eb5SAlex Elder 17649719778SAlex Elder static struct ceph_osd_data * 17749719778SAlex Elder osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) 17849719778SAlex Elder { 17949719778SAlex Elder BUG_ON(which >= osd_req->r_num_ops); 18049719778SAlex Elder 18149719778SAlex Elder return &osd_req->r_ops[which].raw_data_in; 18249719778SAlex Elder } 18349719778SAlex Elder 184a4ce40a9SAlex Elder struct ceph_osd_data * 185a4ce40a9SAlex Elder osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, 186406e2c9fSAlex Elder unsigned int which) 187a4ce40a9SAlex Elder { 188863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, extent, osd_data); 189a4ce40a9SAlex Elder } 190a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data); 191a4ce40a9SAlex Elder 19249719778SAlex Elder void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 19349719778SAlex Elder unsigned int which, struct page **pages, 19449719778SAlex Elder u64 length, u32 alignment, 19549719778SAlex Elder bool pages_from_pool, bool own_pages) 19649719778SAlex Elder { 19749719778SAlex Elder struct ceph_osd_data *osd_data; 19849719778SAlex Elder 19949719778SAlex Elder osd_data = osd_req_op_raw_data_in(osd_req, which); 20049719778SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 20149719778SAlex Elder pages_from_pool, own_pages); 20249719778SAlex Elder } 20349719778SAlex Elder EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 20449719778SAlex Elder 205a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 206406e2c9fSAlex Elder unsigned int which, struct page **pages, 207406e2c9fSAlex Elder u64 length, u32 alignment, 208a4ce40a9SAlex Elder bool pages_from_pool, bool own_pages) 209a4ce40a9SAlex Elder { 210a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 211a4ce40a9SAlex Elder 212863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 213a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 214a4ce40a9SAlex Elder pages_from_pool, own_pages); 215a4ce40a9SAlex Elder } 216a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 217a4ce40a9SAlex Elder 218a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 219406e2c9fSAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 220a4ce40a9SAlex Elder { 221a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 222a4ce40a9SAlex Elder 223863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 224a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 225a4ce40a9SAlex Elder } 226a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 227a4ce40a9SAlex Elder 228a4ce40a9SAlex Elder #ifdef CONFIG_BLOCK 229a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 2305359a17dSIlya Dryomov unsigned int which, 2315359a17dSIlya Dryomov struct ceph_bio_iter *bio_pos, 2325359a17dSIlya Dryomov u32 bio_length) 233a4ce40a9SAlex Elder { 234a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 235863c7eb5SAlex Elder 236863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2375359a17dSIlya Dryomov ceph_osd_data_bio_init(osd_data, bio_pos, bio_length); 238a4ce40a9SAlex Elder } 239a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 240a4ce40a9SAlex Elder #endif /* CONFIG_BLOCK */ 241a4ce40a9SAlex Elder 2420010f705SIlya Dryomov void osd_req_op_extent_osd_data_bvecs(struct ceph_osd_request *osd_req, 2430010f705SIlya Dryomov unsigned int which, 2440010f705SIlya Dryomov struct bio_vec *bvecs, u32 num_bvecs, 2450010f705SIlya Dryomov u32 bytes) 2460010f705SIlya Dryomov { 2470010f705SIlya Dryomov struct ceph_osd_data *osd_data; 2480010f705SIlya Dryomov struct ceph_bvec_iter it = { 2490010f705SIlya Dryomov .bvecs = bvecs, 2500010f705SIlya Dryomov .iter = { .bi_size = bytes }, 2510010f705SIlya Dryomov }; 2520010f705SIlya Dryomov 2530010f705SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2540010f705SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, &it, num_bvecs); 2550010f705SIlya Dryomov } 2560010f705SIlya Dryomov EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvecs); 2570010f705SIlya Dryomov 258b9e281c2SIlya Dryomov void osd_req_op_extent_osd_data_bvec_pos(struct ceph_osd_request *osd_req, 259b9e281c2SIlya Dryomov unsigned int which, 260b9e281c2SIlya Dryomov struct ceph_bvec_iter *bvec_pos) 261b9e281c2SIlya Dryomov { 262b9e281c2SIlya Dryomov struct ceph_osd_data *osd_data; 263b9e281c2SIlya Dryomov 264b9e281c2SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2650010f705SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, bvec_pos, 0); 266b9e281c2SIlya Dryomov } 267b9e281c2SIlya Dryomov EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvec_pos); 268b9e281c2SIlya Dryomov 269a4ce40a9SAlex Elder static void osd_req_op_cls_request_info_pagelist( 270a4ce40a9SAlex Elder struct ceph_osd_request *osd_req, 271a4ce40a9SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 272a4ce40a9SAlex Elder { 273a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 274a4ce40a9SAlex Elder 275863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_info); 276a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 277a4ce40a9SAlex Elder } 278a4ce40a9SAlex Elder 27904017e29SAlex Elder void osd_req_op_cls_request_data_pagelist( 28004017e29SAlex Elder struct ceph_osd_request *osd_req, 28104017e29SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 28204017e29SAlex Elder { 28304017e29SAlex Elder struct ceph_osd_data *osd_data; 28404017e29SAlex Elder 285863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 28604017e29SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 287bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += pagelist->length; 288bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += pagelist->length; 28904017e29SAlex Elder } 29004017e29SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 29104017e29SAlex Elder 2926c57b554SAlex Elder void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 2936c57b554SAlex Elder unsigned int which, struct page **pages, u64 length, 2946c57b554SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 2956c57b554SAlex Elder { 2966c57b554SAlex Elder struct ceph_osd_data *osd_data; 2976c57b554SAlex Elder 2986c57b554SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 2996c57b554SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 3006c57b554SAlex Elder pages_from_pool, own_pages); 301bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += length; 302bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += length; 3036c57b554SAlex Elder } 3046c57b554SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 3056c57b554SAlex Elder 306b9e281c2SIlya Dryomov void osd_req_op_cls_request_data_bvecs(struct ceph_osd_request *osd_req, 307b9e281c2SIlya Dryomov unsigned int which, 3080010f705SIlya Dryomov struct bio_vec *bvecs, u32 num_bvecs, 3090010f705SIlya Dryomov u32 bytes) 310b9e281c2SIlya Dryomov { 311b9e281c2SIlya Dryomov struct ceph_osd_data *osd_data; 312b9e281c2SIlya Dryomov struct ceph_bvec_iter it = { 313b9e281c2SIlya Dryomov .bvecs = bvecs, 314b9e281c2SIlya Dryomov .iter = { .bi_size = bytes }, 315b9e281c2SIlya Dryomov }; 316b9e281c2SIlya Dryomov 317b9e281c2SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, cls, request_data); 3180010f705SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, &it, num_bvecs); 319b9e281c2SIlya Dryomov osd_req->r_ops[which].cls.indata_len += bytes; 320b9e281c2SIlya Dryomov osd_req->r_ops[which].indata_len += bytes; 321b9e281c2SIlya Dryomov } 322b9e281c2SIlya Dryomov EXPORT_SYMBOL(osd_req_op_cls_request_data_bvecs); 323b9e281c2SIlya Dryomov 324a4ce40a9SAlex Elder void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 325a4ce40a9SAlex Elder unsigned int which, struct page **pages, u64 length, 326a4ce40a9SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 327a4ce40a9SAlex Elder { 328a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 329a4ce40a9SAlex Elder 330863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, response_data); 331a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 332a4ce40a9SAlex Elder pages_from_pool, own_pages); 333a4ce40a9SAlex Elder } 334a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 335a4ce40a9SAlex Elder 33623c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 33723c08a9cSAlex Elder { 33823c08a9cSAlex Elder switch (osd_data->type) { 33923c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 34023c08a9cSAlex Elder return 0; 34123c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 34223c08a9cSAlex Elder return osd_data->length; 34323c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 34423c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 34523c08a9cSAlex Elder #ifdef CONFIG_BLOCK 34623c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 34723c08a9cSAlex Elder return (u64)osd_data->bio_length; 34823c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 349b9e281c2SIlya Dryomov case CEPH_OSD_DATA_TYPE_BVECS: 350b9e281c2SIlya Dryomov return osd_data->bvec_pos.iter.bi_size; 35123c08a9cSAlex Elder default: 35223c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 35323c08a9cSAlex Elder return 0; 35423c08a9cSAlex Elder } 35523c08a9cSAlex Elder } 35623c08a9cSAlex Elder 357c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 358c54d47bfSAlex Elder { 3595476492fSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 360c54d47bfSAlex Elder int num_pages; 361c54d47bfSAlex Elder 362c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 363c54d47bfSAlex Elder (u64)osd_data->length); 364c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 365c54d47bfSAlex Elder } 3665476492fSAlex Elder ceph_osd_data_init(osd_data); 3675476492fSAlex Elder } 3685476492fSAlex Elder 3695476492fSAlex Elder static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 3705476492fSAlex Elder unsigned int which) 3715476492fSAlex Elder { 3725476492fSAlex Elder struct ceph_osd_req_op *op; 3735476492fSAlex Elder 3745476492fSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 3755476492fSAlex Elder op = &osd_req->r_ops[which]; 3765476492fSAlex Elder 3775476492fSAlex Elder switch (op->op) { 3785476492fSAlex Elder case CEPH_OSD_OP_READ: 3795476492fSAlex Elder case CEPH_OSD_OP_WRITE: 380e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 3815476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 3825476492fSAlex Elder break; 3835476492fSAlex Elder case CEPH_OSD_OP_CALL: 3845476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 38504017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 3865476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 3875476492fSAlex Elder break; 388d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 389d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 390d74b50beSYan, Zheng ceph_osd_data_release(&op->xattr.osd_data); 391d74b50beSYan, Zheng break; 39266ba609fSYan, Zheng case CEPH_OSD_OP_STAT: 39366ba609fSYan, Zheng ceph_osd_data_release(&op->raw_data_in); 39466ba609fSYan, Zheng break; 395922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 396922dab61SIlya Dryomov ceph_osd_data_release(&op->notify_ack.request_data); 397922dab61SIlya Dryomov break; 39819079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 39919079203SIlya Dryomov ceph_osd_data_release(&op->notify.request_data); 40019079203SIlya Dryomov ceph_osd_data_release(&op->notify.response_data); 40119079203SIlya Dryomov break; 402a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 403a4ed38d7SDouglas Fuller ceph_osd_data_release(&op->list_watchers.response_data); 404a4ed38d7SDouglas Fuller break; 4055476492fSAlex Elder default: 4065476492fSAlex Elder break; 4075476492fSAlex Elder } 408c54d47bfSAlex Elder } 409c54d47bfSAlex Elder 4103d14c5d2SYehuda Sadeh /* 41163244fa1SIlya Dryomov * Assumes @t is zero-initialized. 41263244fa1SIlya Dryomov */ 41363244fa1SIlya Dryomov static void target_init(struct ceph_osd_request_target *t) 41463244fa1SIlya Dryomov { 41563244fa1SIlya Dryomov ceph_oid_init(&t->base_oid); 41663244fa1SIlya Dryomov ceph_oloc_init(&t->base_oloc); 41763244fa1SIlya Dryomov ceph_oid_init(&t->target_oid); 41863244fa1SIlya Dryomov ceph_oloc_init(&t->target_oloc); 41963244fa1SIlya Dryomov 42063244fa1SIlya Dryomov ceph_osds_init(&t->acting); 42163244fa1SIlya Dryomov ceph_osds_init(&t->up); 42263244fa1SIlya Dryomov t->size = -1; 42363244fa1SIlya Dryomov t->min_size = -1; 42463244fa1SIlya Dryomov 42563244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 42663244fa1SIlya Dryomov } 42763244fa1SIlya Dryomov 428922dab61SIlya Dryomov static void target_copy(struct ceph_osd_request_target *dest, 429922dab61SIlya Dryomov const struct ceph_osd_request_target *src) 430922dab61SIlya Dryomov { 431922dab61SIlya Dryomov ceph_oid_copy(&dest->base_oid, &src->base_oid); 432922dab61SIlya Dryomov ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); 433922dab61SIlya Dryomov ceph_oid_copy(&dest->target_oid, &src->target_oid); 434922dab61SIlya Dryomov ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); 435922dab61SIlya Dryomov 436922dab61SIlya Dryomov dest->pgid = src->pgid; /* struct */ 437dc98ff72SIlya Dryomov dest->spgid = src->spgid; /* struct */ 438922dab61SIlya Dryomov dest->pg_num = src->pg_num; 439922dab61SIlya Dryomov dest->pg_num_mask = src->pg_num_mask; 440922dab61SIlya Dryomov ceph_osds_copy(&dest->acting, &src->acting); 441922dab61SIlya Dryomov ceph_osds_copy(&dest->up, &src->up); 442922dab61SIlya Dryomov dest->size = src->size; 443922dab61SIlya Dryomov dest->min_size = src->min_size; 444922dab61SIlya Dryomov dest->sort_bitwise = src->sort_bitwise; 445922dab61SIlya Dryomov 446922dab61SIlya Dryomov dest->flags = src->flags; 447922dab61SIlya Dryomov dest->paused = src->paused; 448922dab61SIlya Dryomov 44904c7d789SIlya Dryomov dest->epoch = src->epoch; 450dc93e0e2SIlya Dryomov dest->last_force_resend = src->last_force_resend; 451dc93e0e2SIlya Dryomov 452922dab61SIlya Dryomov dest->osd = src->osd; 453922dab61SIlya Dryomov } 454922dab61SIlya Dryomov 45563244fa1SIlya Dryomov static void target_destroy(struct ceph_osd_request_target *t) 45663244fa1SIlya Dryomov { 45763244fa1SIlya Dryomov ceph_oid_destroy(&t->base_oid); 45830c156d9SYan, Zheng ceph_oloc_destroy(&t->base_oloc); 45963244fa1SIlya Dryomov ceph_oid_destroy(&t->target_oid); 46030c156d9SYan, Zheng ceph_oloc_destroy(&t->target_oloc); 46163244fa1SIlya Dryomov } 46263244fa1SIlya Dryomov 46363244fa1SIlya Dryomov /* 4643d14c5d2SYehuda Sadeh * requests 4653d14c5d2SYehuda Sadeh */ 4663540bfdbSIlya Dryomov static void request_release_checks(struct ceph_osd_request *req) 4673540bfdbSIlya Dryomov { 4683540bfdbSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 4694609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node)); 4703540bfdbSIlya Dryomov WARN_ON(!list_empty(&req->r_unsafe_item)); 4713540bfdbSIlya Dryomov WARN_ON(req->r_osd); 4723540bfdbSIlya Dryomov } 4733540bfdbSIlya Dryomov 4749e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 4753d14c5d2SYehuda Sadeh { 4769e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 4779e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 4785476492fSAlex Elder unsigned int which; 4793d14c5d2SYehuda Sadeh 4809e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 4819e94af20SIlya Dryomov req->r_request, req->r_reply); 4823540bfdbSIlya Dryomov request_release_checks(req); 4839e94af20SIlya Dryomov 4843d14c5d2SYehuda Sadeh if (req->r_request) 4853d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 4865aea3dcdSIlya Dryomov if (req->r_reply) 487ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 4880fff87ecSAlex Elder 4895476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 4905476492fSAlex Elder osd_req_op_data_release(req, which); 4910fff87ecSAlex Elder 492a66dd383SIlya Dryomov target_destroy(&req->r_t); 4933d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 494d30291b9SIlya Dryomov 4953d14c5d2SYehuda Sadeh if (req->r_mempool) 4963d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 4973f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 4985522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 4993f1af42aSIlya Dryomov else 5003f1af42aSIlya Dryomov kfree(req); 5013d14c5d2SYehuda Sadeh } 5029e94af20SIlya Dryomov 5039e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 5049e94af20SIlya Dryomov { 5059e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 5062c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 5079e94af20SIlya Dryomov kref_get(&req->r_kref); 5089e94af20SIlya Dryomov } 5099e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 5109e94af20SIlya Dryomov 5119e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 5129e94af20SIlya Dryomov { 5133ed97d63SIlya Dryomov if (req) { 5149e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 5152c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 5169e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 5179e94af20SIlya Dryomov } 5183ed97d63SIlya Dryomov } 5199e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 5203d14c5d2SYehuda Sadeh 5213540bfdbSIlya Dryomov static void request_init(struct ceph_osd_request *req) 5223540bfdbSIlya Dryomov { 5233540bfdbSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 5243540bfdbSIlya Dryomov memset(req, 0, sizeof(*req)); 5253540bfdbSIlya Dryomov 5263540bfdbSIlya Dryomov kref_init(&req->r_kref); 5273540bfdbSIlya Dryomov init_completion(&req->r_completion); 5283540bfdbSIlya Dryomov RB_CLEAR_NODE(&req->r_node); 5294609245eSIlya Dryomov RB_CLEAR_NODE(&req->r_mc_node); 5303540bfdbSIlya Dryomov INIT_LIST_HEAD(&req->r_unsafe_item); 5313540bfdbSIlya Dryomov 5323540bfdbSIlya Dryomov target_init(&req->r_t); 5333540bfdbSIlya Dryomov } 5343540bfdbSIlya Dryomov 535922dab61SIlya Dryomov /* 536922dab61SIlya Dryomov * This is ugly, but it allows us to reuse linger registration and ping 537922dab61SIlya Dryomov * requests, keeping the structure of the code around send_linger{_ping}() 538922dab61SIlya Dryomov * reasonable. Setting up a min_nr=2 mempool for each linger request 539922dab61SIlya Dryomov * and dealing with copying ops (this blasts req only, watch op remains 540922dab61SIlya Dryomov * intact) isn't any better. 541922dab61SIlya Dryomov */ 542922dab61SIlya Dryomov static void request_reinit(struct ceph_osd_request *req) 543922dab61SIlya Dryomov { 544922dab61SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 545922dab61SIlya Dryomov bool mempool = req->r_mempool; 546922dab61SIlya Dryomov unsigned int num_ops = req->r_num_ops; 547922dab61SIlya Dryomov u64 snapid = req->r_snapid; 548922dab61SIlya Dryomov struct ceph_snap_context *snapc = req->r_snapc; 549922dab61SIlya Dryomov bool linger = req->r_linger; 550922dab61SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 551922dab61SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 552922dab61SIlya Dryomov 553922dab61SIlya Dryomov dout("%s req %p\n", __func__, req); 5542c935bc5SPeter Zijlstra WARN_ON(kref_read(&req->r_kref) != 1); 555922dab61SIlya Dryomov request_release_checks(req); 556922dab61SIlya Dryomov 5572c935bc5SPeter Zijlstra WARN_ON(kref_read(&request_msg->kref) != 1); 5582c935bc5SPeter Zijlstra WARN_ON(kref_read(&reply_msg->kref) != 1); 559922dab61SIlya Dryomov target_destroy(&req->r_t); 560922dab61SIlya Dryomov 561922dab61SIlya Dryomov request_init(req); 562922dab61SIlya Dryomov req->r_osdc = osdc; 563922dab61SIlya Dryomov req->r_mempool = mempool; 564922dab61SIlya Dryomov req->r_num_ops = num_ops; 565922dab61SIlya Dryomov req->r_snapid = snapid; 566922dab61SIlya Dryomov req->r_snapc = snapc; 567922dab61SIlya Dryomov req->r_linger = linger; 568922dab61SIlya Dryomov req->r_request = request_msg; 569922dab61SIlya Dryomov req->r_reply = reply_msg; 570922dab61SIlya Dryomov } 571922dab61SIlya Dryomov 5723d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 5733d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5741b83bef2SSage Weil unsigned int num_ops, 5753d14c5d2SYehuda Sadeh bool use_mempool, 57654a54007SAlex Elder gfp_t gfp_flags) 5773d14c5d2SYehuda Sadeh { 5783d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5793d14c5d2SYehuda Sadeh 5803d14c5d2SYehuda Sadeh if (use_mempool) { 5813f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 5823d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 5833f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 5843f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 5853d14c5d2SYehuda Sadeh } else { 5863f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 5873f1af42aSIlya Dryomov req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), 5883f1af42aSIlya Dryomov gfp_flags); 5893d14c5d2SYehuda Sadeh } 5903f1af42aSIlya Dryomov if (unlikely(!req)) 5913d14c5d2SYehuda Sadeh return NULL; 5923d14c5d2SYehuda Sadeh 5933540bfdbSIlya Dryomov request_init(req); 5943d14c5d2SYehuda Sadeh req->r_osdc = osdc; 5953d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 59679528734SAlex Elder req->r_num_ops = num_ops; 59784127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 59884127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 5993d14c5d2SYehuda Sadeh 60013d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 60113d1ad16SIlya Dryomov return req; 6023f1af42aSIlya Dryomov } 60313d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 6043f1af42aSIlya Dryomov 6052e59ffd1SIlya Dryomov static int ceph_oloc_encoding_size(const struct ceph_object_locator *oloc) 60630c156d9SYan, Zheng { 60730c156d9SYan, Zheng return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0); 60830c156d9SYan, Zheng } 60930c156d9SYan, Zheng 61013d1ad16SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 61113d1ad16SIlya Dryomov { 61213d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 61313d1ad16SIlya Dryomov struct ceph_msg *msg; 61413d1ad16SIlya Dryomov int msg_size; 6153d14c5d2SYehuda Sadeh 616d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 61730c156d9SYan, Zheng WARN_ON(ceph_oloc_empty(&req->r_base_oloc)); 618d30291b9SIlya Dryomov 61913d1ad16SIlya Dryomov /* create request message */ 6208cb441c0SIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 6218cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 6228cb441c0SIlya Dryomov msg_size += 4 + 4 + 4; /* hash, osdmap_epoch, flags */ 6238cb441c0SIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 6248cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid); /* reqid */ 6258cb441c0SIlya Dryomov msg_size += sizeof(struct ceph_blkin_trace_info); /* trace */ 6268cb441c0SIlya Dryomov msg_size += 4 + sizeof(struct ceph_timespec); /* client_inc, mtime */ 62730c156d9SYan, Zheng msg_size += CEPH_ENCODING_START_BLK_LEN + 62830c156d9SYan, Zheng ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */ 62913d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 63013d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 631ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 632ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 63313d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 6348cb441c0SIlya Dryomov msg_size += 4 + 8; /* retry_attempt, features */ 635ae458f5aSIlya Dryomov 63613d1ad16SIlya Dryomov if (req->r_mempool) 6373d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 6383d14c5d2SYehuda Sadeh else 63913d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); 64013d1ad16SIlya Dryomov if (!msg) 64113d1ad16SIlya Dryomov return -ENOMEM; 6423d14c5d2SYehuda Sadeh 6433d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 6443d14c5d2SYehuda Sadeh req->r_request = msg; 6453d14c5d2SYehuda Sadeh 64613d1ad16SIlya Dryomov /* create reply message */ 64713d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 648711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 649711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 65013d1ad16SIlya Dryomov 65113d1ad16SIlya Dryomov if (req->r_mempool) 65213d1ad16SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 65313d1ad16SIlya Dryomov else 65413d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); 65513d1ad16SIlya Dryomov if (!msg) 65613d1ad16SIlya Dryomov return -ENOMEM; 65713d1ad16SIlya Dryomov 65813d1ad16SIlya Dryomov req->r_reply = msg; 65913d1ad16SIlya Dryomov 66013d1ad16SIlya Dryomov return 0; 66113d1ad16SIlya Dryomov } 66213d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 6633d14c5d2SYehuda Sadeh 664a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 665a8dd0a37SAlex Elder { 666a8dd0a37SAlex Elder switch (opcode) { 66770b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 66870b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 66970b5bfa3SIlya Dryomov #undef GENERATE_CASE 670a8dd0a37SAlex Elder default: 671a8dd0a37SAlex Elder return false; 672a8dd0a37SAlex Elder } 673a8dd0a37SAlex Elder } 674a8dd0a37SAlex Elder 67533803f33SAlex Elder /* 67633803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 67733803f33SAlex Elder * other information associated with them. It also serves as a 67833803f33SAlex Elder * common init routine for all the other init functions, below. 67933803f33SAlex Elder */ 680c99d2d4aSAlex Elder static struct ceph_osd_req_op * 68149719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 682144cba14SYan, Zheng u16 opcode, u32 flags) 68333803f33SAlex Elder { 684c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 685c99d2d4aSAlex Elder 686c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 68733803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 68833803f33SAlex Elder 689c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 69033803f33SAlex Elder memset(op, 0, sizeof (*op)); 69133803f33SAlex Elder op->op = opcode; 692144cba14SYan, Zheng op->flags = flags; 693c99d2d4aSAlex Elder 694c99d2d4aSAlex Elder return op; 69533803f33SAlex Elder } 69633803f33SAlex Elder 69749719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 698144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 69949719778SAlex Elder { 700144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 70149719778SAlex Elder } 70249719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 70349719778SAlex Elder 704c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 705c99d2d4aSAlex Elder unsigned int which, u16 opcode, 70633803f33SAlex Elder u64 offset, u64 length, 70733803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 70833803f33SAlex Elder { 709144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 710144cba14SYan, Zheng opcode, 0); 71133803f33SAlex Elder size_t payload_len = 0; 71233803f33SAlex Elder 713ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 714e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 715e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 71633803f33SAlex Elder 71733803f33SAlex Elder op->extent.offset = offset; 71833803f33SAlex Elder op->extent.length = length; 71933803f33SAlex Elder op->extent.truncate_size = truncate_size; 72033803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 721e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 72233803f33SAlex Elder payload_len += length; 72333803f33SAlex Elder 724de2aa102SIlya Dryomov op->indata_len = payload_len; 72533803f33SAlex Elder } 72633803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 72733803f33SAlex Elder 728c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 729c99d2d4aSAlex Elder unsigned int which, u64 length) 730e5975c7cSAlex Elder { 731c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 732c99d2d4aSAlex Elder u64 previous; 733c99d2d4aSAlex Elder 734c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 735c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 736c99d2d4aSAlex Elder previous = op->extent.length; 737e5975c7cSAlex Elder 738e5975c7cSAlex Elder if (length == previous) 739e5975c7cSAlex Elder return; /* Nothing to do */ 740e5975c7cSAlex Elder BUG_ON(length > previous); 741e5975c7cSAlex Elder 742e5975c7cSAlex Elder op->extent.length = length; 743d641df81SYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 744de2aa102SIlya Dryomov op->indata_len -= previous - length; 745e5975c7cSAlex Elder } 746e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 747e5975c7cSAlex Elder 7482c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 7492c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 7502c63f49aSYan, Zheng { 7512c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 7522c63f49aSYan, Zheng 7532c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 7542c63f49aSYan, Zheng 7552c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 7562c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 7572c63f49aSYan, Zheng /* dup previous one */ 7582c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 7592c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 7602c63f49aSYan, Zheng op->extent = prev_op->extent; 7612c63f49aSYan, Zheng /* adjust offset */ 7622c63f49aSYan, Zheng op->extent.offset += offset_inc; 7632c63f49aSYan, Zheng op->extent.length -= offset_inc; 7642c63f49aSYan, Zheng 7652c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 7662c63f49aSYan, Zheng op->indata_len -= offset_inc; 7672c63f49aSYan, Zheng } 7682c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 7692c63f49aSYan, Zheng 770fe943d50SChengguang Xu int osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 77104017e29SAlex Elder u16 opcode, const char *class, const char *method) 77233803f33SAlex Elder { 773144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 774144cba14SYan, Zheng opcode, 0); 7755f562df5SAlex Elder struct ceph_pagelist *pagelist; 77633803f33SAlex Elder size_t payload_len = 0; 77733803f33SAlex Elder size_t size; 77833803f33SAlex Elder 77933803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 78033803f33SAlex Elder 7815f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 782fe943d50SChengguang Xu if (!pagelist) 783fe943d50SChengguang Xu return -ENOMEM; 784fe943d50SChengguang Xu 7855f562df5SAlex Elder ceph_pagelist_init(pagelist); 7865f562df5SAlex Elder 78733803f33SAlex Elder op->cls.class_name = class; 78833803f33SAlex Elder size = strlen(class); 78933803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 79033803f33SAlex Elder op->cls.class_len = size; 7915f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 79233803f33SAlex Elder payload_len += size; 79333803f33SAlex Elder 79433803f33SAlex Elder op->cls.method_name = method; 79533803f33SAlex Elder size = strlen(method); 79633803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 79733803f33SAlex Elder op->cls.method_len = size; 7985f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 79933803f33SAlex Elder payload_len += size; 80033803f33SAlex Elder 801a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 8025f562df5SAlex Elder 803de2aa102SIlya Dryomov op->indata_len = payload_len; 804fe943d50SChengguang Xu return 0; 80533803f33SAlex Elder } 80633803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 8078c042b0dSAlex Elder 808d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 809d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 810d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 811d74b50beSYan, Zheng { 812144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 813144cba14SYan, Zheng opcode, 0); 814d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 815d74b50beSYan, Zheng size_t payload_len; 816d74b50beSYan, Zheng 817d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 818d74b50beSYan, Zheng 819d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 820d74b50beSYan, Zheng if (!pagelist) 821d74b50beSYan, Zheng return -ENOMEM; 822d74b50beSYan, Zheng 823d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 824d74b50beSYan, Zheng 825d74b50beSYan, Zheng payload_len = strlen(name); 826d74b50beSYan, Zheng op->xattr.name_len = payload_len; 827d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 828d74b50beSYan, Zheng 829d74b50beSYan, Zheng op->xattr.value_len = size; 830d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 831d74b50beSYan, Zheng payload_len += size; 832d74b50beSYan, Zheng 833d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 834d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 835d74b50beSYan, Zheng 836d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 837de2aa102SIlya Dryomov op->indata_len = payload_len; 838d74b50beSYan, Zheng return 0; 839d74b50beSYan, Zheng } 840d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 841d74b50beSYan, Zheng 842922dab61SIlya Dryomov /* 843922dab61SIlya Dryomov * @watch_opcode: CEPH_OSD_WATCH_OP_* 844922dab61SIlya Dryomov */ 845922dab61SIlya Dryomov static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, 846922dab61SIlya Dryomov u64 cookie, u8 watch_opcode) 84733803f33SAlex Elder { 848922dab61SIlya Dryomov struct ceph_osd_req_op *op; 84933803f33SAlex Elder 850922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); 85133803f33SAlex Elder op->watch.cookie = cookie; 852922dab61SIlya Dryomov op->watch.op = watch_opcode; 853922dab61SIlya Dryomov op->watch.gen = 0; 85433803f33SAlex Elder } 85533803f33SAlex Elder 856c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 857c647b8a8SIlya Dryomov unsigned int which, 858c647b8a8SIlya Dryomov u64 expected_object_size, 859c647b8a8SIlya Dryomov u64 expected_write_size) 860c647b8a8SIlya Dryomov { 861c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 862144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 863144cba14SYan, Zheng 0); 864c647b8a8SIlya Dryomov 865c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 866c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 867c647b8a8SIlya Dryomov 868c647b8a8SIlya Dryomov /* 869c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 870c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 871c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 872c647b8a8SIlya Dryomov */ 873c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 874c647b8a8SIlya Dryomov } 875c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 876c647b8a8SIlya Dryomov 87790af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 878ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 879ec9123c5SAlex Elder { 880ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 881ec9123c5SAlex Elder 882ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 883ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 884ec9123c5SAlex Elder if (length) 88590af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 886ec9123c5SAlex Elder length, osd_data->alignment); 887ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 888ec9123c5SAlex Elder BUG_ON(!length); 88990af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 890ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 891ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 8925359a17dSIlya Dryomov ceph_msg_data_add_bio(msg, &osd_data->bio_pos, length); 893ec9123c5SAlex Elder #endif 894b9e281c2SIlya Dryomov } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BVECS) { 895b9e281c2SIlya Dryomov ceph_msg_data_add_bvecs(msg, &osd_data->bvec_pos); 896ec9123c5SAlex Elder } else { 897ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 898ec9123c5SAlex Elder } 899ec9123c5SAlex Elder } 900ec9123c5SAlex Elder 901bb873b53SIlya Dryomov static u32 osd_req_encode_op(struct ceph_osd_op *dst, 902bb873b53SIlya Dryomov const struct ceph_osd_req_op *src) 9033d14c5d2SYehuda Sadeh { 904a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 905a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 906a8dd0a37SAlex Elder 907a8dd0a37SAlex Elder return 0; 908a8dd0a37SAlex Elder } 9093d14c5d2SYehuda Sadeh 910065a68f9SAlex Elder switch (src->op) { 911fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 912fbfab539SAlex Elder break; 9133d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 9143d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 915e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 916ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 917ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 918175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 919175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 9203d14c5d2SYehuda Sadeh dst->extent.truncate_size = 9213d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 9223d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 9233d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 9243d14c5d2SYehuda Sadeh break; 9253d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 9263d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 9273d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 928bb873b53SIlya Dryomov dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 9293d14c5d2SYehuda Sadeh break; 930a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 931a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 932922dab61SIlya Dryomov dst->watch.ver = cpu_to_le64(0); 933922dab61SIlya Dryomov dst->watch.op = src->watch.op; 934922dab61SIlya Dryomov dst->watch.gen = cpu_to_le32(src->watch.gen); 935922dab61SIlya Dryomov break; 936922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 937a40c4f10SYehuda Sadeh break; 93819079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 93919079203SIlya Dryomov dst->notify.cookie = cpu_to_le64(src->notify.cookie); 94019079203SIlya Dryomov break; 941a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 942a4ed38d7SDouglas Fuller break; 943c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 944c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 945c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 946c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 947c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 948c647b8a8SIlya Dryomov break; 949d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 950d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 951d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 952d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 953d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 954d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 955d74b50beSYan, Zheng break; 956864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 957864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 958864e9197SYan, Zheng break; 9593d14c5d2SYehuda Sadeh default: 9604c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 9618f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 9624c46459cSAlex Elder WARN_ON(1); 963a8dd0a37SAlex Elder 964a8dd0a37SAlex Elder return 0; 9653d14c5d2SYehuda Sadeh } 9667b25bf5fSIlya Dryomov 967a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 9687b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 969de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 970175face2SAlex Elder 971bb873b53SIlya Dryomov return src->indata_len; 9723d14c5d2SYehuda Sadeh } 9733d14c5d2SYehuda Sadeh 9743d14c5d2SYehuda Sadeh /* 9753d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 9763d14c5d2SYehuda Sadeh * extent as needed. 9773d14c5d2SYehuda Sadeh * 9783d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 9793d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 9803d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 9813d14c5d2SYehuda Sadeh */ 9823d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 9833d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 9843d14c5d2SYehuda Sadeh struct ceph_vino vino, 985715e4cd4SYan, Zheng u64 off, u64 *plen, 986715e4cd4SYan, Zheng unsigned int which, int num_ops, 9873d14c5d2SYehuda Sadeh int opcode, int flags, 9883d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 9893d14c5d2SYehuda Sadeh u32 truncate_seq, 9903d14c5d2SYehuda Sadeh u64 truncate_size, 991153e5167SAlex Elder bool use_mempool) 9923d14c5d2SYehuda Sadeh { 9933d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 99475d1c941SAlex Elder u64 objnum = 0; 99575d1c941SAlex Elder u64 objoff = 0; 99675d1c941SAlex Elder u64 objlen = 0; 9976816282dSSage Weil int r; 9983d14c5d2SYehuda Sadeh 999ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 1000864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 1001864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 10023d14c5d2SYehuda Sadeh 1003acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 1004ae7ca4a3SAlex Elder GFP_NOFS); 100513d1ad16SIlya Dryomov if (!req) { 100613d1ad16SIlya Dryomov r = -ENOMEM; 100713d1ad16SIlya Dryomov goto fail; 100813d1ad16SIlya Dryomov } 100979528734SAlex Elder 10103d14c5d2SYehuda Sadeh /* calculate max write size */ 1011a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 101213d1ad16SIlya Dryomov if (r) 101313d1ad16SIlya Dryomov goto fail; 1014a19dadfbSAlex Elder 1015864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 1016144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 1017864e9197SYan, Zheng } else { 10187627151eSYan, Zheng u32 object_size = layout->object_size; 1019864e9197SYan, Zheng u32 object_base = off - objoff; 1020ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 1021d18d1e28SAlex Elder if (truncate_size <= object_base) { 1022d18d1e28SAlex Elder truncate_size = 0; 1023d18d1e28SAlex Elder } else { 1024d18d1e28SAlex Elder truncate_size -= object_base; 1025d18d1e28SAlex Elder if (truncate_size > object_size) 1026d18d1e28SAlex Elder truncate_size = object_size; 1027d18d1e28SAlex Elder } 1028ccca4e37SYan, Zheng } 1029715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 1030b0270324SAlex Elder truncate_size, truncate_seq); 1031864e9197SYan, Zheng } 1032d18d1e28SAlex Elder 1033a1f4020aSJeff Layton req->r_abort_on_full = true; 1034bb873b53SIlya Dryomov req->r_flags = flags; 10357627151eSYan, Zheng req->r_base_oloc.pool = layout->pool_id; 103630c156d9SYan, Zheng req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns); 1037d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 1038dbe0fc41SAlex Elder 1039bb873b53SIlya Dryomov req->r_snapid = vino.snap; 1040bb873b53SIlya Dryomov if (flags & CEPH_OSD_FLAG_WRITE) 1041bb873b53SIlya Dryomov req->r_data_offset = off; 1042bb873b53SIlya Dryomov 104313d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 104413d1ad16SIlya Dryomov if (r) 104513d1ad16SIlya Dryomov goto fail; 104613d1ad16SIlya Dryomov 10473d14c5d2SYehuda Sadeh return req; 104813d1ad16SIlya Dryomov 104913d1ad16SIlya Dryomov fail: 105013d1ad16SIlya Dryomov ceph_osdc_put_request(req); 105113d1ad16SIlya Dryomov return ERR_PTR(r); 10523d14c5d2SYehuda Sadeh } 10533d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 10543d14c5d2SYehuda Sadeh 10553d14c5d2SYehuda Sadeh /* 10563d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 10573d14c5d2SYehuda Sadeh */ 1058fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 10594609245eSIlya Dryomov DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) 10603d14c5d2SYehuda Sadeh 10610247a0cfSIlya Dryomov static bool osd_homeless(struct ceph_osd *osd) 10620247a0cfSIlya Dryomov { 10630247a0cfSIlya Dryomov return osd->o_osd == CEPH_HOMELESS_OSD; 10640247a0cfSIlya Dryomov } 10650247a0cfSIlya Dryomov 10665aea3dcdSIlya Dryomov static bool osd_registered(struct ceph_osd *osd) 10673d14c5d2SYehuda Sadeh { 10685aea3dcdSIlya Dryomov verify_osdc_locked(osd->o_osdc); 10693d14c5d2SYehuda Sadeh 10705aea3dcdSIlya Dryomov return !RB_EMPTY_NODE(&osd->o_node); 10713d14c5d2SYehuda Sadeh } 10723d14c5d2SYehuda Sadeh 10733d14c5d2SYehuda Sadeh /* 10740247a0cfSIlya Dryomov * Assumes @osd is zero-initialized. 10750247a0cfSIlya Dryomov */ 10760247a0cfSIlya Dryomov static void osd_init(struct ceph_osd *osd) 10770247a0cfSIlya Dryomov { 107802113a0fSElena Reshetova refcount_set(&osd->o_ref, 1); 10790247a0cfSIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 10805aea3dcdSIlya Dryomov osd->o_requests = RB_ROOT; 1081922dab61SIlya Dryomov osd->o_linger_requests = RB_ROOT; 1082a02a946dSIlya Dryomov osd->o_backoff_mappings = RB_ROOT; 1083a02a946dSIlya Dryomov osd->o_backoffs_by_id = RB_ROOT; 10840247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_osd_lru); 10850247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_keepalive_item); 10860247a0cfSIlya Dryomov osd->o_incarnation = 1; 10875aea3dcdSIlya Dryomov mutex_init(&osd->lock); 10880247a0cfSIlya Dryomov } 10890247a0cfSIlya Dryomov 10900247a0cfSIlya Dryomov static void osd_cleanup(struct ceph_osd *osd) 10910247a0cfSIlya Dryomov { 10920247a0cfSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); 10935aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 1094922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 1095a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoff_mappings)); 1096a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoffs_by_id)); 10970247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_osd_lru)); 10980247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_keepalive_item)); 10990247a0cfSIlya Dryomov 11000247a0cfSIlya Dryomov if (osd->o_auth.authorizer) { 11010247a0cfSIlya Dryomov WARN_ON(osd_homeless(osd)); 11020247a0cfSIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 11030247a0cfSIlya Dryomov } 11040247a0cfSIlya Dryomov } 11050247a0cfSIlya Dryomov 11060247a0cfSIlya Dryomov /* 11073d14c5d2SYehuda Sadeh * Track open sessions with osds. 11083d14c5d2SYehuda Sadeh */ 1109e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 11103d14c5d2SYehuda Sadeh { 11113d14c5d2SYehuda Sadeh struct ceph_osd *osd; 11123d14c5d2SYehuda Sadeh 11130247a0cfSIlya Dryomov WARN_ON(onum == CEPH_HOMELESS_OSD); 11140247a0cfSIlya Dryomov 11157a28f59bSIlya Dryomov osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); 11160247a0cfSIlya Dryomov osd_init(osd); 11173d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1118e10006f8SAlex Elder osd->o_osd = onum; 11193d14c5d2SYehuda Sadeh 1120b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 11213d14c5d2SYehuda Sadeh 11223d14c5d2SYehuda Sadeh return osd; 11233d14c5d2SYehuda Sadeh } 11243d14c5d2SYehuda Sadeh 11253d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 11263d14c5d2SYehuda Sadeh { 112702113a0fSElena Reshetova if (refcount_inc_not_zero(&osd->o_ref)) { 112802113a0fSElena Reshetova dout("get_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref)-1, 112902113a0fSElena Reshetova refcount_read(&osd->o_ref)); 11303d14c5d2SYehuda Sadeh return osd; 11313d14c5d2SYehuda Sadeh } else { 11323d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 11333d14c5d2SYehuda Sadeh return NULL; 11343d14c5d2SYehuda Sadeh } 11353d14c5d2SYehuda Sadeh } 11363d14c5d2SYehuda Sadeh 11373d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 11383d14c5d2SYehuda Sadeh { 113902113a0fSElena Reshetova dout("put_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref), 114002113a0fSElena Reshetova refcount_read(&osd->o_ref) - 1); 114102113a0fSElena Reshetova if (refcount_dec_and_test(&osd->o_ref)) { 11420247a0cfSIlya Dryomov osd_cleanup(osd); 11433d14c5d2SYehuda Sadeh kfree(osd); 11443d14c5d2SYehuda Sadeh } 11453d14c5d2SYehuda Sadeh } 11463d14c5d2SYehuda Sadeh 1147fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1148fcd00b68SIlya Dryomov 11499dd2845cSIlya Dryomov static void __move_osd_to_lru(struct ceph_osd *osd) 11503d14c5d2SYehuda Sadeh { 11519dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 11529dd2845cSIlya Dryomov 11539dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11543d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1155bbf37ec3SIlya Dryomov 11569dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 11573d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 11589dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 11599dd2845cSIlya Dryomov 1160a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 11613d14c5d2SYehuda Sadeh } 11623d14c5d2SYehuda Sadeh 11639dd2845cSIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd *osd) 1164bbf37ec3SIlya Dryomov { 11655aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1166922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) 11679dd2845cSIlya Dryomov __move_osd_to_lru(osd); 1168bbf37ec3SIlya Dryomov } 1169bbf37ec3SIlya Dryomov 11703d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 11713d14c5d2SYehuda Sadeh { 11729dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 11739dd2845cSIlya Dryomov 11749dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11759dd2845cSIlya Dryomov 11769dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 11773d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 11783d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11799dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 11803d14c5d2SYehuda Sadeh } 11813d14c5d2SYehuda Sadeh 11823d14c5d2SYehuda Sadeh /* 11835aea3dcdSIlya Dryomov * Close the connection and assign any leftover requests to the 11845aea3dcdSIlya Dryomov * homeless session. 11855aea3dcdSIlya Dryomov */ 11865aea3dcdSIlya Dryomov static void close_osd(struct ceph_osd *osd) 11875aea3dcdSIlya Dryomov { 11885aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 11895aea3dcdSIlya Dryomov struct rb_node *n; 11905aea3dcdSIlya Dryomov 11915aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 11925aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11935aea3dcdSIlya Dryomov 11945aea3dcdSIlya Dryomov ceph_con_close(&osd->o_con); 11955aea3dcdSIlya Dryomov 11965aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 11975aea3dcdSIlya Dryomov struct ceph_osd_request *req = 11985aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 11995aea3dcdSIlya Dryomov 12005aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 12015aea3dcdSIlya Dryomov 12025aea3dcdSIlya Dryomov dout(" reassigning req %p tid %llu\n", req, req->r_tid); 12035aea3dcdSIlya Dryomov unlink_request(osd, req); 12045aea3dcdSIlya Dryomov link_request(&osdc->homeless_osd, req); 12055aea3dcdSIlya Dryomov } 1206922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 1207922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1208922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 1209922dab61SIlya Dryomov 1210922dab61SIlya Dryomov n = rb_next(n); /* unlink_linger() */ 1211922dab61SIlya Dryomov 1212922dab61SIlya Dryomov dout(" reassigning lreq %p linger_id %llu\n", lreq, 1213922dab61SIlya Dryomov lreq->linger_id); 1214922dab61SIlya Dryomov unlink_linger(osd, lreq); 1215922dab61SIlya Dryomov link_linger(&osdc->homeless_osd, lreq); 1216922dab61SIlya Dryomov } 1217a02a946dSIlya Dryomov clear_backoffs(osd); 12185aea3dcdSIlya Dryomov 12195aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 12205aea3dcdSIlya Dryomov erase_osd(&osdc->osds, osd); 12215aea3dcdSIlya Dryomov put_osd(osd); 12225aea3dcdSIlya Dryomov } 12235aea3dcdSIlya Dryomov 12245aea3dcdSIlya Dryomov /* 12253d14c5d2SYehuda Sadeh * reset osd connect 12263d14c5d2SYehuda Sadeh */ 12275aea3dcdSIlya Dryomov static int reopen_osd(struct ceph_osd *osd) 12283d14c5d2SYehuda Sadeh { 1229c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 12303d14c5d2SYehuda Sadeh 12315aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 12325aea3dcdSIlya Dryomov 12335aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1234922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) { 12355aea3dcdSIlya Dryomov close_osd(osd); 1236c3acb181SAlex Elder return -ENODEV; 1237c3acb181SAlex Elder } 1238c3acb181SAlex Elder 12395aea3dcdSIlya Dryomov peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; 1240c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 12413d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 12425aea3dcdSIlya Dryomov struct rb_node *n; 1243c3acb181SAlex Elder 12443d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 12450b4af2e8SIlya Dryomov "letting msgr retry\n"); 12463d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 12475aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 12485aea3dcdSIlya Dryomov struct ceph_osd_request *req = 12495aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 12503d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 12515aea3dcdSIlya Dryomov } 1252c3acb181SAlex Elder 1253c3acb181SAlex Elder return -EAGAIN; 12543d14c5d2SYehuda Sadeh } 1255c3acb181SAlex Elder 1256c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1257c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1258c3acb181SAlex Elder osd->o_incarnation++; 1259c3acb181SAlex Elder 1260c3acb181SAlex Elder return 0; 12613d14c5d2SYehuda Sadeh } 12623d14c5d2SYehuda Sadeh 12635aea3dcdSIlya Dryomov static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, 12645aea3dcdSIlya Dryomov bool wrlocked) 12653d14c5d2SYehuda Sadeh { 12665aea3dcdSIlya Dryomov struct ceph_osd *osd; 12675aea3dcdSIlya Dryomov 12685aea3dcdSIlya Dryomov if (wrlocked) 12695aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 12705aea3dcdSIlya Dryomov else 12715aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 12725aea3dcdSIlya Dryomov 12735aea3dcdSIlya Dryomov if (o != CEPH_HOMELESS_OSD) 12745aea3dcdSIlya Dryomov osd = lookup_osd(&osdc->osds, o); 12755aea3dcdSIlya Dryomov else 12765aea3dcdSIlya Dryomov osd = &osdc->homeless_osd; 12775aea3dcdSIlya Dryomov if (!osd) { 12785aea3dcdSIlya Dryomov if (!wrlocked) 12795aea3dcdSIlya Dryomov return ERR_PTR(-EAGAIN); 12805aea3dcdSIlya Dryomov 12815aea3dcdSIlya Dryomov osd = create_osd(osdc, o); 12825aea3dcdSIlya Dryomov insert_osd(&osdc->osds, osd); 12835aea3dcdSIlya Dryomov ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, 12845aea3dcdSIlya Dryomov &osdc->osdmap->osd_addr[osd->o_osd]); 12855aea3dcdSIlya Dryomov } 12865aea3dcdSIlya Dryomov 12875aea3dcdSIlya Dryomov dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); 12885aea3dcdSIlya Dryomov return osd; 1289a40c4f10SYehuda Sadeh } 1290a40c4f10SYehuda Sadeh 12913d14c5d2SYehuda Sadeh /* 12925aea3dcdSIlya Dryomov * Create request <-> OSD session relation. 12935aea3dcdSIlya Dryomov * 12945aea3dcdSIlya Dryomov * @req has to be assigned a tid, @osd may be homeless. 12953d14c5d2SYehuda Sadeh */ 12965aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) 12973d14c5d2SYehuda Sadeh { 12985aea3dcdSIlya Dryomov verify_osd_locked(osd); 12995aea3dcdSIlya Dryomov WARN_ON(!req->r_tid || req->r_osd); 13005aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 130135f9f8a0SSage Weil req, req->r_tid); 13025aea3dcdSIlya Dryomov 13035aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 13045aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 13055aea3dcdSIlya Dryomov else 13065aea3dcdSIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 13075aea3dcdSIlya Dryomov 13085aea3dcdSIlya Dryomov get_osd(osd); 13095aea3dcdSIlya Dryomov insert_request(&osd->o_requests, req); 13105aea3dcdSIlya Dryomov req->r_osd = osd; 131135f9f8a0SSage Weil } 131235f9f8a0SSage Weil 13135aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) 13143d14c5d2SYehuda Sadeh { 13155aea3dcdSIlya Dryomov verify_osd_locked(osd); 13165aea3dcdSIlya Dryomov WARN_ON(req->r_osd != osd); 13175aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 13185aea3dcdSIlya Dryomov req, req->r_tid); 13195aea3dcdSIlya Dryomov 13205aea3dcdSIlya Dryomov req->r_osd = NULL; 13215aea3dcdSIlya Dryomov erase_request(&osd->o_requests, req); 13225aea3dcdSIlya Dryomov put_osd(osd); 13235aea3dcdSIlya Dryomov 13245aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 13255aea3dcdSIlya Dryomov maybe_move_osd_to_lru(osd); 13265aea3dcdSIlya Dryomov else 13275aea3dcdSIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 13283d14c5d2SYehuda Sadeh } 13293d14c5d2SYehuda Sadeh 133063244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 133163244fa1SIlya Dryomov { 133263244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 133363244fa1SIlya Dryomov } 133463244fa1SIlya Dryomov 133542c1b124SIlya Dryomov static bool have_pool_full(struct ceph_osd_client *osdc) 133642c1b124SIlya Dryomov { 133742c1b124SIlya Dryomov struct rb_node *n; 133842c1b124SIlya Dryomov 133942c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 134042c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 134142c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 134242c1b124SIlya Dryomov 134342c1b124SIlya Dryomov if (__pool_full(pi)) 134442c1b124SIlya Dryomov return true; 134542c1b124SIlya Dryomov } 134642c1b124SIlya Dryomov 134742c1b124SIlya Dryomov return false; 134842c1b124SIlya Dryomov } 134942c1b124SIlya Dryomov 13505aea3dcdSIlya Dryomov static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) 13515aea3dcdSIlya Dryomov { 13525aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 13535aea3dcdSIlya Dryomov 13545aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 13555aea3dcdSIlya Dryomov if (!pi) 13565aea3dcdSIlya Dryomov return false; 13575aea3dcdSIlya Dryomov 13585aea3dcdSIlya Dryomov return __pool_full(pi); 13595aea3dcdSIlya Dryomov } 13605aea3dcdSIlya Dryomov 13613d14c5d2SYehuda Sadeh /* 1362d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1363d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1364d29adb34SJosh Durgin */ 136563244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 136663244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 136763244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 136863244fa1SIlya Dryomov { 1369b7ec35b3SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 1370b7ec35b3SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 1371b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 137263244fa1SIlya Dryomov __pool_full(pi); 137363244fa1SIlya Dryomov 13746d637a54SIlya Dryomov WARN_ON(pi->id != t->target_oloc.pool); 137558eb7932SJeff Layton return ((t->flags & CEPH_OSD_FLAG_READ) && pauserd) || 137658eb7932SJeff Layton ((t->flags & CEPH_OSD_FLAG_WRITE) && pausewr) || 137758eb7932SJeff Layton (osdc->osdmap->epoch < osdc->epoch_barrier); 137863244fa1SIlya Dryomov } 137963244fa1SIlya Dryomov 138063244fa1SIlya Dryomov enum calc_target_result { 138163244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 138263244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 138363244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 138463244fa1SIlya Dryomov }; 138563244fa1SIlya Dryomov 138663244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 138763244fa1SIlya Dryomov struct ceph_osd_request_target *t, 13887de030d6SIlya Dryomov struct ceph_connection *con, 138963244fa1SIlya Dryomov bool any_change) 139063244fa1SIlya Dryomov { 139163244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 139263244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 139363244fa1SIlya Dryomov struct ceph_osds up, acting; 139463244fa1SIlya Dryomov bool force_resend = false; 139584ed45dfSIlya Dryomov bool unpaused = false; 139684ed45dfSIlya Dryomov bool legacy_change; 13977de030d6SIlya Dryomov bool split = false; 1398b7ec35b3SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); 1399ae78dd81SIlya Dryomov bool recovery_deletes = ceph_osdmap_flag(osdc, 1400ae78dd81SIlya Dryomov CEPH_OSDMAP_RECOVERY_DELETES); 140163244fa1SIlya Dryomov enum calc_target_result ct_res; 140263244fa1SIlya Dryomov int ret; 140363244fa1SIlya Dryomov 140404c7d789SIlya Dryomov t->epoch = osdc->osdmap->epoch; 140563244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 140663244fa1SIlya Dryomov if (!pi) { 140763244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 140863244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 140963244fa1SIlya Dryomov goto out; 141063244fa1SIlya Dryomov } 141163244fa1SIlya Dryomov 141263244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 1413dc93e0e2SIlya Dryomov if (t->last_force_resend < pi->last_force_request_resend) { 1414dc93e0e2SIlya Dryomov t->last_force_resend = pi->last_force_request_resend; 141563244fa1SIlya Dryomov force_resend = true; 1416dc93e0e2SIlya Dryomov } else if (t->last_force_resend == 0) { 141763244fa1SIlya Dryomov force_resend = true; 141863244fa1SIlya Dryomov } 141963244fa1SIlya Dryomov } 142063244fa1SIlya Dryomov 1421db098ec4SIlya Dryomov /* apply tiering */ 1422db098ec4SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 1423db098ec4SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 1424db098ec4SIlya Dryomov if ((t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 142563244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) 142663244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 142763244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) 142863244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 14296d637a54SIlya Dryomov 14306d637a54SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->target_oloc.pool); 14316d637a54SIlya Dryomov if (!pi) { 14326d637a54SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 14336d637a54SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 14346d637a54SIlya Dryomov goto out; 14356d637a54SIlya Dryomov } 143663244fa1SIlya Dryomov } 143763244fa1SIlya Dryomov 1438df28152dSIlya Dryomov ret = __ceph_object_locator_to_pg(pi, &t->target_oid, &t->target_oloc, 1439df28152dSIlya Dryomov &pgid); 144063244fa1SIlya Dryomov if (ret) { 144163244fa1SIlya Dryomov WARN_ON(ret != -ENOENT); 144263244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 144363244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 144463244fa1SIlya Dryomov goto out; 144563244fa1SIlya Dryomov } 144663244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 144763244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 144863244fa1SIlya Dryomov 1449df28152dSIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, pi, &pgid, &up, &acting); 145063244fa1SIlya Dryomov if (any_change && 145163244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 145263244fa1SIlya Dryomov &acting, 145363244fa1SIlya Dryomov &t->up, 145463244fa1SIlya Dryomov &up, 145563244fa1SIlya Dryomov t->size, 145663244fa1SIlya Dryomov pi->size, 145763244fa1SIlya Dryomov t->min_size, 145863244fa1SIlya Dryomov pi->min_size, 145963244fa1SIlya Dryomov t->pg_num, 146063244fa1SIlya Dryomov pi->pg_num, 146163244fa1SIlya Dryomov t->sort_bitwise, 146263244fa1SIlya Dryomov sort_bitwise, 1463ae78dd81SIlya Dryomov t->recovery_deletes, 1464ae78dd81SIlya Dryomov recovery_deletes, 146563244fa1SIlya Dryomov &last_pgid)) 146663244fa1SIlya Dryomov force_resend = true; 146763244fa1SIlya Dryomov 146863244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 146963244fa1SIlya Dryomov t->paused = false; 147084ed45dfSIlya Dryomov unpaused = true; 147163244fa1SIlya Dryomov } 147284ed45dfSIlya Dryomov legacy_change = ceph_pg_compare(&t->pgid, &pgid) || 147384ed45dfSIlya Dryomov ceph_osds_changed(&t->acting, &acting, any_change); 14747de030d6SIlya Dryomov if (t->pg_num) 14757de030d6SIlya Dryomov split = ceph_pg_is_split(&last_pgid, t->pg_num, pi->pg_num); 147663244fa1SIlya Dryomov 14777de030d6SIlya Dryomov if (legacy_change || force_resend || split) { 147863244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 1479df28152dSIlya Dryomov ceph_pg_to_primary_shard(osdc->osdmap, pi, &pgid, &t->spgid); 148063244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 148163244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 148263244fa1SIlya Dryomov t->size = pi->size; 148363244fa1SIlya Dryomov t->min_size = pi->min_size; 148463244fa1SIlya Dryomov t->pg_num = pi->pg_num; 148563244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 148663244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 1487ae78dd81SIlya Dryomov t->recovery_deletes = recovery_deletes; 148863244fa1SIlya Dryomov 148963244fa1SIlya Dryomov t->osd = acting.primary; 149063244fa1SIlya Dryomov } 149163244fa1SIlya Dryomov 14927de030d6SIlya Dryomov if (unpaused || legacy_change || force_resend || 14937de030d6SIlya Dryomov (split && con && CEPH_HAVE_FEATURE(con->peer_features, 14947de030d6SIlya Dryomov RESEND_ON_SPLIT))) 149584ed45dfSIlya Dryomov ct_res = CALC_TARGET_NEED_RESEND; 149684ed45dfSIlya Dryomov else 149784ed45dfSIlya Dryomov ct_res = CALC_TARGET_NO_ACTION; 149884ed45dfSIlya Dryomov 149963244fa1SIlya Dryomov out: 150063244fa1SIlya Dryomov dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); 150163244fa1SIlya Dryomov return ct_res; 150263244fa1SIlya Dryomov } 150363244fa1SIlya Dryomov 1504a02a946dSIlya Dryomov static struct ceph_spg_mapping *alloc_spg_mapping(void) 1505a02a946dSIlya Dryomov { 1506a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1507a02a946dSIlya Dryomov 1508a02a946dSIlya Dryomov spg = kmalloc(sizeof(*spg), GFP_NOIO); 1509a02a946dSIlya Dryomov if (!spg) 1510a02a946dSIlya Dryomov return NULL; 1511a02a946dSIlya Dryomov 1512a02a946dSIlya Dryomov RB_CLEAR_NODE(&spg->node); 1513a02a946dSIlya Dryomov spg->backoffs = RB_ROOT; 1514a02a946dSIlya Dryomov return spg; 1515a02a946dSIlya Dryomov } 1516a02a946dSIlya Dryomov 1517a02a946dSIlya Dryomov static void free_spg_mapping(struct ceph_spg_mapping *spg) 1518a02a946dSIlya Dryomov { 1519a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&spg->node)); 1520a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&spg->backoffs)); 1521a02a946dSIlya Dryomov 1522a02a946dSIlya Dryomov kfree(spg); 1523a02a946dSIlya Dryomov } 1524a02a946dSIlya Dryomov 1525a02a946dSIlya Dryomov /* 1526a02a946dSIlya Dryomov * rbtree of ceph_spg_mapping for handling map<spg_t, ...>, similar to 1527a02a946dSIlya Dryomov * ceph_pg_mapping. Used to track OSD backoffs -- a backoff [range] is 1528a02a946dSIlya Dryomov * defined only within a specific spgid; it does not pass anything to 1529a02a946dSIlya Dryomov * children on split, or to another primary. 1530a02a946dSIlya Dryomov */ 1531a02a946dSIlya Dryomov DEFINE_RB_FUNCS2(spg_mapping, struct ceph_spg_mapping, spgid, ceph_spg_compare, 1532a02a946dSIlya Dryomov RB_BYPTR, const struct ceph_spg *, node) 1533a02a946dSIlya Dryomov 1534a02a946dSIlya Dryomov static u64 hoid_get_bitwise_key(const struct ceph_hobject_id *hoid) 1535a02a946dSIlya Dryomov { 1536a02a946dSIlya Dryomov return hoid->is_max ? 0x100000000ull : hoid->hash_reverse_bits; 1537a02a946dSIlya Dryomov } 1538a02a946dSIlya Dryomov 1539a02a946dSIlya Dryomov static void hoid_get_effective_key(const struct ceph_hobject_id *hoid, 1540a02a946dSIlya Dryomov void **pkey, size_t *pkey_len) 1541a02a946dSIlya Dryomov { 1542a02a946dSIlya Dryomov if (hoid->key_len) { 1543a02a946dSIlya Dryomov *pkey = hoid->key; 1544a02a946dSIlya Dryomov *pkey_len = hoid->key_len; 1545a02a946dSIlya Dryomov } else { 1546a02a946dSIlya Dryomov *pkey = hoid->oid; 1547a02a946dSIlya Dryomov *pkey_len = hoid->oid_len; 1548a02a946dSIlya Dryomov } 1549a02a946dSIlya Dryomov } 1550a02a946dSIlya Dryomov 1551a02a946dSIlya Dryomov static int compare_names(const void *name1, size_t name1_len, 1552a02a946dSIlya Dryomov const void *name2, size_t name2_len) 1553a02a946dSIlya Dryomov { 1554a02a946dSIlya Dryomov int ret; 1555a02a946dSIlya Dryomov 1556a02a946dSIlya Dryomov ret = memcmp(name1, name2, min(name1_len, name2_len)); 1557a02a946dSIlya Dryomov if (!ret) { 1558a02a946dSIlya Dryomov if (name1_len < name2_len) 1559a02a946dSIlya Dryomov ret = -1; 1560a02a946dSIlya Dryomov else if (name1_len > name2_len) 1561a02a946dSIlya Dryomov ret = 1; 1562a02a946dSIlya Dryomov } 1563a02a946dSIlya Dryomov return ret; 1564a02a946dSIlya Dryomov } 1565a02a946dSIlya Dryomov 1566a02a946dSIlya Dryomov static int hoid_compare(const struct ceph_hobject_id *lhs, 1567a02a946dSIlya Dryomov const struct ceph_hobject_id *rhs) 1568a02a946dSIlya Dryomov { 1569a02a946dSIlya Dryomov void *effective_key1, *effective_key2; 1570a02a946dSIlya Dryomov size_t effective_key1_len, effective_key2_len; 1571a02a946dSIlya Dryomov int ret; 1572a02a946dSIlya Dryomov 1573a02a946dSIlya Dryomov if (lhs->is_max < rhs->is_max) 1574a02a946dSIlya Dryomov return -1; 1575a02a946dSIlya Dryomov if (lhs->is_max > rhs->is_max) 1576a02a946dSIlya Dryomov return 1; 1577a02a946dSIlya Dryomov 1578a02a946dSIlya Dryomov if (lhs->pool < rhs->pool) 1579a02a946dSIlya Dryomov return -1; 1580a02a946dSIlya Dryomov if (lhs->pool > rhs->pool) 1581a02a946dSIlya Dryomov return 1; 1582a02a946dSIlya Dryomov 1583a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) < hoid_get_bitwise_key(rhs)) 1584a02a946dSIlya Dryomov return -1; 1585a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) > hoid_get_bitwise_key(rhs)) 1586a02a946dSIlya Dryomov return 1; 1587a02a946dSIlya Dryomov 1588a02a946dSIlya Dryomov ret = compare_names(lhs->nspace, lhs->nspace_len, 1589a02a946dSIlya Dryomov rhs->nspace, rhs->nspace_len); 1590a02a946dSIlya Dryomov if (ret) 1591a02a946dSIlya Dryomov return ret; 1592a02a946dSIlya Dryomov 1593a02a946dSIlya Dryomov hoid_get_effective_key(lhs, &effective_key1, &effective_key1_len); 1594a02a946dSIlya Dryomov hoid_get_effective_key(rhs, &effective_key2, &effective_key2_len); 1595a02a946dSIlya Dryomov ret = compare_names(effective_key1, effective_key1_len, 1596a02a946dSIlya Dryomov effective_key2, effective_key2_len); 1597a02a946dSIlya Dryomov if (ret) 1598a02a946dSIlya Dryomov return ret; 1599a02a946dSIlya Dryomov 1600a02a946dSIlya Dryomov ret = compare_names(lhs->oid, lhs->oid_len, rhs->oid, rhs->oid_len); 1601a02a946dSIlya Dryomov if (ret) 1602a02a946dSIlya Dryomov return ret; 1603a02a946dSIlya Dryomov 1604a02a946dSIlya Dryomov if (lhs->snapid < rhs->snapid) 1605a02a946dSIlya Dryomov return -1; 1606a02a946dSIlya Dryomov if (lhs->snapid > rhs->snapid) 1607a02a946dSIlya Dryomov return 1; 1608a02a946dSIlya Dryomov 1609a02a946dSIlya Dryomov return 0; 1610a02a946dSIlya Dryomov } 1611a02a946dSIlya Dryomov 1612a02a946dSIlya Dryomov /* 1613a02a946dSIlya Dryomov * For decoding ->begin and ->end of MOSDBackoff only -- no MIN/MAX 1614a02a946dSIlya Dryomov * compat stuff here. 1615a02a946dSIlya Dryomov * 1616a02a946dSIlya Dryomov * Assumes @hoid is zero-initialized. 1617a02a946dSIlya Dryomov */ 1618a02a946dSIlya Dryomov static int decode_hoid(void **p, void *end, struct ceph_hobject_id *hoid) 1619a02a946dSIlya Dryomov { 1620a02a946dSIlya Dryomov u8 struct_v; 1621a02a946dSIlya Dryomov u32 struct_len; 1622a02a946dSIlya Dryomov int ret; 1623a02a946dSIlya Dryomov 1624a02a946dSIlya Dryomov ret = ceph_start_decoding(p, end, 4, "hobject_t", &struct_v, 1625a02a946dSIlya Dryomov &struct_len); 1626a02a946dSIlya Dryomov if (ret) 1627a02a946dSIlya Dryomov return ret; 1628a02a946dSIlya Dryomov 1629a02a946dSIlya Dryomov if (struct_v < 4) { 1630a02a946dSIlya Dryomov pr_err("got struct_v %d < 4 of hobject_t\n", struct_v); 1631a02a946dSIlya Dryomov goto e_inval; 1632a02a946dSIlya Dryomov } 1633a02a946dSIlya Dryomov 1634a02a946dSIlya Dryomov hoid->key = ceph_extract_encoded_string(p, end, &hoid->key_len, 1635a02a946dSIlya Dryomov GFP_NOIO); 1636a02a946dSIlya Dryomov if (IS_ERR(hoid->key)) { 1637a02a946dSIlya Dryomov ret = PTR_ERR(hoid->key); 1638a02a946dSIlya Dryomov hoid->key = NULL; 1639a02a946dSIlya Dryomov return ret; 1640a02a946dSIlya Dryomov } 1641a02a946dSIlya Dryomov 1642a02a946dSIlya Dryomov hoid->oid = ceph_extract_encoded_string(p, end, &hoid->oid_len, 1643a02a946dSIlya Dryomov GFP_NOIO); 1644a02a946dSIlya Dryomov if (IS_ERR(hoid->oid)) { 1645a02a946dSIlya Dryomov ret = PTR_ERR(hoid->oid); 1646a02a946dSIlya Dryomov hoid->oid = NULL; 1647a02a946dSIlya Dryomov return ret; 1648a02a946dSIlya Dryomov } 1649a02a946dSIlya Dryomov 1650a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->snapid, e_inval); 1651a02a946dSIlya Dryomov ceph_decode_32_safe(p, end, hoid->hash, e_inval); 1652a02a946dSIlya Dryomov ceph_decode_8_safe(p, end, hoid->is_max, e_inval); 1653a02a946dSIlya Dryomov 1654a02a946dSIlya Dryomov hoid->nspace = ceph_extract_encoded_string(p, end, &hoid->nspace_len, 1655a02a946dSIlya Dryomov GFP_NOIO); 1656a02a946dSIlya Dryomov if (IS_ERR(hoid->nspace)) { 1657a02a946dSIlya Dryomov ret = PTR_ERR(hoid->nspace); 1658a02a946dSIlya Dryomov hoid->nspace = NULL; 1659a02a946dSIlya Dryomov return ret; 1660a02a946dSIlya Dryomov } 1661a02a946dSIlya Dryomov 1662a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->pool, e_inval); 1663a02a946dSIlya Dryomov 1664a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1665a02a946dSIlya Dryomov return 0; 1666a02a946dSIlya Dryomov 1667a02a946dSIlya Dryomov e_inval: 1668a02a946dSIlya Dryomov return -EINVAL; 1669a02a946dSIlya Dryomov } 1670a02a946dSIlya Dryomov 1671a02a946dSIlya Dryomov static int hoid_encoding_size(const struct ceph_hobject_id *hoid) 1672a02a946dSIlya Dryomov { 1673a02a946dSIlya Dryomov return 8 + 4 + 1 + 8 + /* snapid, hash, is_max, pool */ 1674a02a946dSIlya Dryomov 4 + hoid->key_len + 4 + hoid->oid_len + 4 + hoid->nspace_len; 1675a02a946dSIlya Dryomov } 1676a02a946dSIlya Dryomov 1677a02a946dSIlya Dryomov static void encode_hoid(void **p, void *end, const struct ceph_hobject_id *hoid) 1678a02a946dSIlya Dryomov { 1679a02a946dSIlya Dryomov ceph_start_encoding(p, 4, 3, hoid_encoding_size(hoid)); 1680a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->key, hoid->key_len); 1681a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->oid, hoid->oid_len); 1682a02a946dSIlya Dryomov ceph_encode_64(p, hoid->snapid); 1683a02a946dSIlya Dryomov ceph_encode_32(p, hoid->hash); 1684a02a946dSIlya Dryomov ceph_encode_8(p, hoid->is_max); 1685a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->nspace, hoid->nspace_len); 1686a02a946dSIlya Dryomov ceph_encode_64(p, hoid->pool); 1687a02a946dSIlya Dryomov } 1688a02a946dSIlya Dryomov 1689a02a946dSIlya Dryomov static void free_hoid(struct ceph_hobject_id *hoid) 1690a02a946dSIlya Dryomov { 1691a02a946dSIlya Dryomov if (hoid) { 1692a02a946dSIlya Dryomov kfree(hoid->key); 1693a02a946dSIlya Dryomov kfree(hoid->oid); 1694a02a946dSIlya Dryomov kfree(hoid->nspace); 1695a02a946dSIlya Dryomov kfree(hoid); 1696a02a946dSIlya Dryomov } 1697a02a946dSIlya Dryomov } 1698a02a946dSIlya Dryomov 1699a02a946dSIlya Dryomov static struct ceph_osd_backoff *alloc_backoff(void) 1700a02a946dSIlya Dryomov { 1701a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1702a02a946dSIlya Dryomov 1703a02a946dSIlya Dryomov backoff = kzalloc(sizeof(*backoff), GFP_NOIO); 1704a02a946dSIlya Dryomov if (!backoff) 1705a02a946dSIlya Dryomov return NULL; 1706a02a946dSIlya Dryomov 1707a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->spg_node); 1708a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->id_node); 1709a02a946dSIlya Dryomov return backoff; 1710a02a946dSIlya Dryomov } 1711a02a946dSIlya Dryomov 1712a02a946dSIlya Dryomov static void free_backoff(struct ceph_osd_backoff *backoff) 1713a02a946dSIlya Dryomov { 1714a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->spg_node)); 1715a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->id_node)); 1716a02a946dSIlya Dryomov 1717a02a946dSIlya Dryomov free_hoid(backoff->begin); 1718a02a946dSIlya Dryomov free_hoid(backoff->end); 1719a02a946dSIlya Dryomov kfree(backoff); 1720a02a946dSIlya Dryomov } 1721a02a946dSIlya Dryomov 1722a02a946dSIlya Dryomov /* 1723a02a946dSIlya Dryomov * Within a specific spgid, backoffs are managed by ->begin hoid. 1724a02a946dSIlya Dryomov */ 1725a02a946dSIlya Dryomov DEFINE_RB_INSDEL_FUNCS2(backoff, struct ceph_osd_backoff, begin, hoid_compare, 1726a02a946dSIlya Dryomov RB_BYVAL, spg_node); 1727a02a946dSIlya Dryomov 1728a02a946dSIlya Dryomov static struct ceph_osd_backoff *lookup_containing_backoff(struct rb_root *root, 1729a02a946dSIlya Dryomov const struct ceph_hobject_id *hoid) 1730a02a946dSIlya Dryomov { 1731a02a946dSIlya Dryomov struct rb_node *n = root->rb_node; 1732a02a946dSIlya Dryomov 1733a02a946dSIlya Dryomov while (n) { 1734a02a946dSIlya Dryomov struct ceph_osd_backoff *cur = 1735a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_backoff, spg_node); 1736a02a946dSIlya Dryomov int cmp; 1737a02a946dSIlya Dryomov 1738a02a946dSIlya Dryomov cmp = hoid_compare(hoid, cur->begin); 1739a02a946dSIlya Dryomov if (cmp < 0) { 1740a02a946dSIlya Dryomov n = n->rb_left; 1741a02a946dSIlya Dryomov } else if (cmp > 0) { 1742a02a946dSIlya Dryomov if (hoid_compare(hoid, cur->end) < 0) 1743a02a946dSIlya Dryomov return cur; 1744a02a946dSIlya Dryomov 1745a02a946dSIlya Dryomov n = n->rb_right; 1746a02a946dSIlya Dryomov } else { 1747a02a946dSIlya Dryomov return cur; 1748a02a946dSIlya Dryomov } 1749a02a946dSIlya Dryomov } 1750a02a946dSIlya Dryomov 1751a02a946dSIlya Dryomov return NULL; 1752a02a946dSIlya Dryomov } 1753a02a946dSIlya Dryomov 1754a02a946dSIlya Dryomov /* 1755a02a946dSIlya Dryomov * Each backoff has a unique id within its OSD session. 1756a02a946dSIlya Dryomov */ 1757a02a946dSIlya Dryomov DEFINE_RB_FUNCS(backoff_by_id, struct ceph_osd_backoff, id, id_node) 1758a02a946dSIlya Dryomov 1759a02a946dSIlya Dryomov static void clear_backoffs(struct ceph_osd *osd) 1760a02a946dSIlya Dryomov { 1761a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&osd->o_backoff_mappings)) { 1762a02a946dSIlya Dryomov struct ceph_spg_mapping *spg = 1763a02a946dSIlya Dryomov rb_entry(rb_first(&osd->o_backoff_mappings), 1764a02a946dSIlya Dryomov struct ceph_spg_mapping, node); 1765a02a946dSIlya Dryomov 1766a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&spg->backoffs)) { 1767a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff = 1768a02a946dSIlya Dryomov rb_entry(rb_first(&spg->backoffs), 1769a02a946dSIlya Dryomov struct ceph_osd_backoff, spg_node); 1770a02a946dSIlya Dryomov 1771a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 1772a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 1773a02a946dSIlya Dryomov free_backoff(backoff); 1774a02a946dSIlya Dryomov } 1775a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 1776a02a946dSIlya Dryomov free_spg_mapping(spg); 1777a02a946dSIlya Dryomov } 1778a02a946dSIlya Dryomov } 1779a02a946dSIlya Dryomov 1780a02a946dSIlya Dryomov /* 1781a02a946dSIlya Dryomov * Set up a temporary, non-owning view into @t. 1782a02a946dSIlya Dryomov */ 1783a02a946dSIlya Dryomov static void hoid_fill_from_target(struct ceph_hobject_id *hoid, 1784a02a946dSIlya Dryomov const struct ceph_osd_request_target *t) 1785a02a946dSIlya Dryomov { 1786a02a946dSIlya Dryomov hoid->key = NULL; 1787a02a946dSIlya Dryomov hoid->key_len = 0; 1788a02a946dSIlya Dryomov hoid->oid = t->target_oid.name; 1789a02a946dSIlya Dryomov hoid->oid_len = t->target_oid.name_len; 1790a02a946dSIlya Dryomov hoid->snapid = CEPH_NOSNAP; 1791a02a946dSIlya Dryomov hoid->hash = t->pgid.seed; 1792a02a946dSIlya Dryomov hoid->is_max = false; 1793a02a946dSIlya Dryomov if (t->target_oloc.pool_ns) { 1794a02a946dSIlya Dryomov hoid->nspace = t->target_oloc.pool_ns->str; 1795a02a946dSIlya Dryomov hoid->nspace_len = t->target_oloc.pool_ns->len; 1796a02a946dSIlya Dryomov } else { 1797a02a946dSIlya Dryomov hoid->nspace = NULL; 1798a02a946dSIlya Dryomov hoid->nspace_len = 0; 1799a02a946dSIlya Dryomov } 1800a02a946dSIlya Dryomov hoid->pool = t->target_oloc.pool; 1801a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1802a02a946dSIlya Dryomov } 1803a02a946dSIlya Dryomov 1804a02a946dSIlya Dryomov static bool should_plug_request(struct ceph_osd_request *req) 1805a02a946dSIlya Dryomov { 1806a02a946dSIlya Dryomov struct ceph_osd *osd = req->r_osd; 1807a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1808a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1809a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 1810a02a946dSIlya Dryomov 1811a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &req->r_t.spgid); 1812a02a946dSIlya Dryomov if (!spg) 1813a02a946dSIlya Dryomov return false; 1814a02a946dSIlya Dryomov 1815a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, &req->r_t); 1816a02a946dSIlya Dryomov backoff = lookup_containing_backoff(&spg->backoffs, &hoid); 1817a02a946dSIlya Dryomov if (!backoff) 1818a02a946dSIlya Dryomov return false; 1819a02a946dSIlya Dryomov 1820a02a946dSIlya Dryomov dout("%s req %p tid %llu backoff osd%d spgid %llu.%xs%d id %llu\n", 1821a02a946dSIlya Dryomov __func__, req, req->r_tid, osd->o_osd, backoff->spgid.pgid.pool, 1822a02a946dSIlya Dryomov backoff->spgid.pgid.seed, backoff->spgid.shard, backoff->id); 1823a02a946dSIlya Dryomov return true; 1824a02a946dSIlya Dryomov } 1825a02a946dSIlya Dryomov 1826bb873b53SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req, 1827bb873b53SIlya Dryomov struct ceph_msg *msg) 18283d14c5d2SYehuda Sadeh { 1829bb873b53SIlya Dryomov u32 data_len = 0; 1830bb873b53SIlya Dryomov int i; 18313d14c5d2SYehuda Sadeh 1832bb873b53SIlya Dryomov if (!list_empty(&msg->data)) 1833bb873b53SIlya Dryomov return; 18343d14c5d2SYehuda Sadeh 1835bb873b53SIlya Dryomov WARN_ON(msg->data_length); 1836bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1837bb873b53SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[i]; 1838bb873b53SIlya Dryomov 1839bb873b53SIlya Dryomov switch (op->op) { 1840bb873b53SIlya Dryomov /* request */ 1841bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 1842bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 1843bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 1844bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->extent.osd_data); 1845bb873b53SIlya Dryomov break; 1846bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 1847bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 1848bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 1849bb873b53SIlya Dryomov op->xattr.value_len); 1850bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->xattr.osd_data); 1851bb873b53SIlya Dryomov break; 1852922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 1853922dab61SIlya Dryomov ceph_osdc_msg_data_add(msg, 1854922dab61SIlya Dryomov &op->notify_ack.request_data); 1855922dab61SIlya Dryomov break; 1856bb873b53SIlya Dryomov 1857bb873b53SIlya Dryomov /* reply */ 1858bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 1859bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1860bb873b53SIlya Dryomov &op->raw_data_in); 1861bb873b53SIlya Dryomov break; 1862bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 1863bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1864bb873b53SIlya Dryomov &op->extent.osd_data); 1865bb873b53SIlya Dryomov break; 1866a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 1867a4ed38d7SDouglas Fuller ceph_osdc_msg_data_add(req->r_reply, 1868a4ed38d7SDouglas Fuller &op->list_watchers.response_data); 1869a4ed38d7SDouglas Fuller break; 1870bb873b53SIlya Dryomov 1871bb873b53SIlya Dryomov /* both */ 1872bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 1873bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 1874bb873b53SIlya Dryomov op->cls.method_len + 1875bb873b53SIlya Dryomov op->cls.indata_len); 1876bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_info); 1877bb873b53SIlya Dryomov /* optional, can be NONE */ 1878bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_data); 1879bb873b53SIlya Dryomov /* optional, can be NONE */ 1880bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1881bb873b53SIlya Dryomov &op->cls.response_data); 1882bb873b53SIlya Dryomov break; 188319079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 188419079203SIlya Dryomov ceph_osdc_msg_data_add(msg, 188519079203SIlya Dryomov &op->notify.request_data); 188619079203SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 188719079203SIlya Dryomov &op->notify.response_data); 188819079203SIlya Dryomov break; 1889bb873b53SIlya Dryomov } 1890bb873b53SIlya Dryomov 1891bb873b53SIlya Dryomov data_len += op->indata_len; 1892bb873b53SIlya Dryomov } 1893bb873b53SIlya Dryomov 1894bb873b53SIlya Dryomov WARN_ON(data_len != msg->data_length); 1895bb873b53SIlya Dryomov } 1896bb873b53SIlya Dryomov 18972e59ffd1SIlya Dryomov static void encode_pgid(void **p, const struct ceph_pg *pgid) 18982e59ffd1SIlya Dryomov { 18992e59ffd1SIlya Dryomov ceph_encode_8(p, 1); 19002e59ffd1SIlya Dryomov ceph_encode_64(p, pgid->pool); 19012e59ffd1SIlya Dryomov ceph_encode_32(p, pgid->seed); 19022e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 19032e59ffd1SIlya Dryomov } 19042e59ffd1SIlya Dryomov 19058cb441c0SIlya Dryomov static void encode_spgid(void **p, const struct ceph_spg *spgid) 19068cb441c0SIlya Dryomov { 19078cb441c0SIlya Dryomov ceph_start_encoding(p, 1, 1, CEPH_PGID_ENCODING_LEN + 1); 19088cb441c0SIlya Dryomov encode_pgid(p, &spgid->pgid); 19098cb441c0SIlya Dryomov ceph_encode_8(p, spgid->shard); 19108cb441c0SIlya Dryomov } 19118cb441c0SIlya Dryomov 19122e59ffd1SIlya Dryomov static void encode_oloc(void **p, void *end, 19132e59ffd1SIlya Dryomov const struct ceph_object_locator *oloc) 19142e59ffd1SIlya Dryomov { 19152e59ffd1SIlya Dryomov ceph_start_encoding(p, 5, 4, ceph_oloc_encoding_size(oloc)); 19162e59ffd1SIlya Dryomov ceph_encode_64(p, oloc->pool); 19172e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 19182e59ffd1SIlya Dryomov ceph_encode_32(p, 0); /* key len */ 19192e59ffd1SIlya Dryomov if (oloc->pool_ns) 19202e59ffd1SIlya Dryomov ceph_encode_string(p, end, oloc->pool_ns->str, 19212e59ffd1SIlya Dryomov oloc->pool_ns->len); 19222e59ffd1SIlya Dryomov else 19232e59ffd1SIlya Dryomov ceph_encode_32(p, 0); 19242e59ffd1SIlya Dryomov } 19252e59ffd1SIlya Dryomov 19268cb441c0SIlya Dryomov static void encode_request_partial(struct ceph_osd_request *req, 19278cb441c0SIlya Dryomov struct ceph_msg *msg) 1928bb873b53SIlya Dryomov { 1929bb873b53SIlya Dryomov void *p = msg->front.iov_base; 1930bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 1931bb873b53SIlya Dryomov u32 data_len = 0; 1932bb873b53SIlya Dryomov int i; 1933bb873b53SIlya Dryomov 1934bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 1935bb873b53SIlya Dryomov /* snapshots aren't writeable */ 1936bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 1937bb873b53SIlya Dryomov } else { 1938bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 1939bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 1940bb873b53SIlya Dryomov } 1941bb873b53SIlya Dryomov 1942bb873b53SIlya Dryomov setup_request_data(req, msg); 1943bb873b53SIlya Dryomov 19448cb441c0SIlya Dryomov encode_spgid(&p, &req->r_t.spgid); /* actual spg */ 19458cb441c0SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); /* raw hash */ 1946bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 1947bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 19488cb441c0SIlya Dryomov 19498cb441c0SIlya Dryomov /* reqid */ 19508cb441c0SIlya Dryomov ceph_start_encoding(&p, 2, 2, sizeof(struct ceph_osd_reqid)); 19518cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_osd_reqid)); 19528cb441c0SIlya Dryomov p += sizeof(struct ceph_osd_reqid); 19538cb441c0SIlya Dryomov 19548cb441c0SIlya Dryomov /* trace */ 19558cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_blkin_trace_info)); 19568cb441c0SIlya Dryomov p += sizeof(struct ceph_blkin_trace_info); 19578cb441c0SIlya Dryomov 19588cb441c0SIlya Dryomov ceph_encode_32(&p, 0); /* client_inc, always 0 */ 1959bb873b53SIlya Dryomov ceph_encode_timespec(p, &req->r_mtime); 1960bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 1961aa26d662SJeff Layton 19622e59ffd1SIlya Dryomov encode_oloc(&p, end, &req->r_t.target_oloc); 19632e59ffd1SIlya Dryomov ceph_encode_string(&p, end, req->r_t.target_oid.name, 19642e59ffd1SIlya Dryomov req->r_t.target_oid.name_len); 1965bb873b53SIlya Dryomov 1966bb873b53SIlya Dryomov /* ops, can imply data */ 1967bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 1968bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1969bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 1970bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 1971bb873b53SIlya Dryomov } 1972bb873b53SIlya Dryomov 1973bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 1974bb873b53SIlya Dryomov if (req->r_snapc) { 1975bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 1976bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 1977bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 1978bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 1979bb873b53SIlya Dryomov } else { 1980bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 1981bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 1982bb873b53SIlya Dryomov } 1983bb873b53SIlya Dryomov 1984bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 1985986e8989SIlya Dryomov BUG_ON(p > end - 8); /* space for features */ 1986bb873b53SIlya Dryomov 19878cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(8); /* MOSDOp v8 */ 19888cb441c0SIlya Dryomov /* front_len is finalized in encode_request_finish() */ 1989986e8989SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 1990986e8989SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 1991bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 1992bb873b53SIlya Dryomov /* 1993bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 1994bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 1995bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 1996bb873b53SIlya Dryomov */ 1997bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 1998bb873b53SIlya Dryomov 19998cb441c0SIlya Dryomov dout("%s req %p msg %p oid %s oid_len %d\n", __func__, req, msg, 20008cb441c0SIlya Dryomov req->r_t.target_oid.name, req->r_t.target_oid.name_len); 20018cb441c0SIlya Dryomov } 20028cb441c0SIlya Dryomov 20038cb441c0SIlya Dryomov static void encode_request_finish(struct ceph_msg *msg) 20048cb441c0SIlya Dryomov { 20058cb441c0SIlya Dryomov void *p = msg->front.iov_base; 2006986e8989SIlya Dryomov void *const partial_end = p + msg->front.iov_len; 20078cb441c0SIlya Dryomov void *const end = p + msg->front_alloc_len; 20088cb441c0SIlya Dryomov 20098cb441c0SIlya Dryomov if (CEPH_HAVE_FEATURE(msg->con->peer_features, RESEND_ON_SPLIT)) { 20108cb441c0SIlya Dryomov /* luminous OSD -- encode features and be done */ 2011986e8989SIlya Dryomov p = partial_end; 20128cb441c0SIlya Dryomov ceph_encode_64(&p, msg->con->peer_features); 20138cb441c0SIlya Dryomov } else { 20148cb441c0SIlya Dryomov struct { 20158cb441c0SIlya Dryomov char spgid[CEPH_ENCODING_START_BLK_LEN + 20168cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1]; 20178cb441c0SIlya Dryomov __le32 hash; 20188cb441c0SIlya Dryomov __le32 epoch; 20198cb441c0SIlya Dryomov __le32 flags; 20208cb441c0SIlya Dryomov char reqid[CEPH_ENCODING_START_BLK_LEN + 20218cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid)]; 20228cb441c0SIlya Dryomov char trace[sizeof(struct ceph_blkin_trace_info)]; 20238cb441c0SIlya Dryomov __le32 client_inc; 20248cb441c0SIlya Dryomov struct ceph_timespec mtime; 20258cb441c0SIlya Dryomov } __packed head; 20268cb441c0SIlya Dryomov struct ceph_pg pgid; 20278cb441c0SIlya Dryomov void *oloc, *oid, *tail; 20288cb441c0SIlya Dryomov int oloc_len, oid_len, tail_len; 20298cb441c0SIlya Dryomov int len; 20308cb441c0SIlya Dryomov 20318cb441c0SIlya Dryomov /* 20328cb441c0SIlya Dryomov * Pre-luminous OSD -- reencode v8 into v4 using @head 20338cb441c0SIlya Dryomov * as a temporary buffer. Encode the raw PG; the rest 20348cb441c0SIlya Dryomov * is just a matter of moving oloc, oid and tail blobs 20358cb441c0SIlya Dryomov * around. 20368cb441c0SIlya Dryomov */ 20378cb441c0SIlya Dryomov memcpy(&head, p, sizeof(head)); 20388cb441c0SIlya Dryomov p += sizeof(head); 20398cb441c0SIlya Dryomov 20408cb441c0SIlya Dryomov oloc = p; 20418cb441c0SIlya Dryomov p += CEPH_ENCODING_START_BLK_LEN; 20428cb441c0SIlya Dryomov pgid.pool = ceph_decode_64(&p); 20438cb441c0SIlya Dryomov p += 4 + 4; /* preferred, key len */ 20448cb441c0SIlya Dryomov len = ceph_decode_32(&p); 20458cb441c0SIlya Dryomov p += len; /* nspace */ 20468cb441c0SIlya Dryomov oloc_len = p - oloc; 20478cb441c0SIlya Dryomov 20488cb441c0SIlya Dryomov oid = p; 20498cb441c0SIlya Dryomov len = ceph_decode_32(&p); 20508cb441c0SIlya Dryomov p += len; 20518cb441c0SIlya Dryomov oid_len = p - oid; 20528cb441c0SIlya Dryomov 20538cb441c0SIlya Dryomov tail = p; 2054986e8989SIlya Dryomov tail_len = partial_end - p; 20558cb441c0SIlya Dryomov 20568cb441c0SIlya Dryomov p = msg->front.iov_base; 20578cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.client_inc, sizeof(head.client_inc)); 20588cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.epoch, sizeof(head.epoch)); 20598cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.flags, sizeof(head.flags)); 20608cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.mtime, sizeof(head.mtime)); 20618cb441c0SIlya Dryomov 20628cb441c0SIlya Dryomov /* reassert_version */ 20638cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_eversion)); 20648cb441c0SIlya Dryomov p += sizeof(struct ceph_eversion); 20658cb441c0SIlya Dryomov 20668cb441c0SIlya Dryomov BUG_ON(p >= oloc); 20678cb441c0SIlya Dryomov memmove(p, oloc, oloc_len); 20688cb441c0SIlya Dryomov p += oloc_len; 20698cb441c0SIlya Dryomov 20708cb441c0SIlya Dryomov pgid.seed = le32_to_cpu(head.hash); 20718cb441c0SIlya Dryomov encode_pgid(&p, &pgid); /* raw pg */ 20728cb441c0SIlya Dryomov 20738cb441c0SIlya Dryomov BUG_ON(p >= oid); 20748cb441c0SIlya Dryomov memmove(p, oid, oid_len); 20758cb441c0SIlya Dryomov p += oid_len; 20768cb441c0SIlya Dryomov 20778cb441c0SIlya Dryomov /* tail -- ops, snapid, snapc, retry_attempt */ 20788cb441c0SIlya Dryomov BUG_ON(p >= tail); 20798cb441c0SIlya Dryomov memmove(p, tail, tail_len); 20808cb441c0SIlya Dryomov p += tail_len; 20818cb441c0SIlya Dryomov 20828cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 20838cb441c0SIlya Dryomov } 20848cb441c0SIlya Dryomov 20858cb441c0SIlya Dryomov BUG_ON(p > end); 20868cb441c0SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 20878cb441c0SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 20888cb441c0SIlya Dryomov 20898cb441c0SIlya Dryomov dout("%s msg %p tid %llu %u+%u+%u v%d\n", __func__, msg, 20908cb441c0SIlya Dryomov le64_to_cpu(msg->hdr.tid), le32_to_cpu(msg->hdr.front_len), 20918cb441c0SIlya Dryomov le32_to_cpu(msg->hdr.middle_len), le32_to_cpu(msg->hdr.data_len), 20928cb441c0SIlya Dryomov le16_to_cpu(msg->hdr.version)); 2093bb873b53SIlya Dryomov } 2094bb873b53SIlya Dryomov 2095bb873b53SIlya Dryomov /* 2096bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 2097bb873b53SIlya Dryomov */ 2098bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 2099bb873b53SIlya Dryomov { 2100bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 2101bb873b53SIlya Dryomov 21025aea3dcdSIlya Dryomov verify_osd_locked(osd); 2103bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 2104bb873b53SIlya Dryomov 2105a02a946dSIlya Dryomov /* backoff? */ 2106a02a946dSIlya Dryomov if (should_plug_request(req)) 2107a02a946dSIlya Dryomov return; 2108a02a946dSIlya Dryomov 21095aea3dcdSIlya Dryomov /* 21105aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 21115aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 21125aea3dcdSIlya Dryomov */ 21135aea3dcdSIlya Dryomov if (req->r_sent) 21145aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 21155aea3dcdSIlya Dryomov 2116bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 2117bb873b53SIlya Dryomov if (req->r_attempts) 2118bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 2119bb873b53SIlya Dryomov else 2120bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 2121bb873b53SIlya Dryomov 21228cb441c0SIlya Dryomov encode_request_partial(req, req->r_request); 2123bb873b53SIlya Dryomov 212404c7d789SIlya Dryomov dout("%s req %p tid %llu to pgid %llu.%x spgid %llu.%xs%d osd%d e%u flags 0x%x attempt %d\n", 2125bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 2126dc98ff72SIlya Dryomov req->r_t.spgid.pgid.pool, req->r_t.spgid.pgid.seed, 212704c7d789SIlya Dryomov req->r_t.spgid.shard, osd->o_osd, req->r_t.epoch, req->r_flags, 212804c7d789SIlya Dryomov req->r_attempts); 2129bb873b53SIlya Dryomov 2130bb873b53SIlya Dryomov req->r_t.paused = false; 21313d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 2132bb873b53SIlya Dryomov req->r_attempts++; 21333d14c5d2SYehuda Sadeh 2134bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 2135bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 2136bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 21373d14c5d2SYehuda Sadeh } 21383d14c5d2SYehuda Sadeh 213942c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 214042c1b124SIlya Dryomov { 214142c1b124SIlya Dryomov bool continuous = false; 214242c1b124SIlya Dryomov 21435aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 214442c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 214542c1b124SIlya Dryomov 2146b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2147b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || 2148b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 214942c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 215042c1b124SIlya Dryomov continuous = true; 215142c1b124SIlya Dryomov } else { 215242c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 215342c1b124SIlya Dryomov } 215442c1b124SIlya Dryomov 215542c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 215642c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 215742c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 215842c1b124SIlya Dryomov } 215942c1b124SIlya Dryomov 2160a1f4020aSJeff Layton static void complete_request(struct ceph_osd_request *req, int err); 21614609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req); 21624609245eSIlya Dryomov 21635aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 21640bbfdfe8SIlya Dryomov { 21655aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 21665aea3dcdSIlya Dryomov struct ceph_osd *osd; 21674609245eSIlya Dryomov enum calc_target_result ct_res; 21685aea3dcdSIlya Dryomov bool need_send = false; 21695aea3dcdSIlya Dryomov bool promoted = false; 2170a1f4020aSJeff Layton bool need_abort = false; 21710bbfdfe8SIlya Dryomov 2172b18b9550SIlya Dryomov WARN_ON(req->r_tid); 21735aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 21745aea3dcdSIlya Dryomov 21755aea3dcdSIlya Dryomov again: 21767de030d6SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, NULL, false); 21774609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) 21784609245eSIlya Dryomov goto promote; 21794609245eSIlya Dryomov 21805aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 21815aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 21825aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 21835aea3dcdSIlya Dryomov goto promote; 21845aea3dcdSIlya Dryomov } 21855aea3dcdSIlya Dryomov 218658eb7932SJeff Layton if (osdc->osdmap->epoch < osdc->epoch_barrier) { 218758eb7932SJeff Layton dout("req %p epoch %u barrier %u\n", req, osdc->osdmap->epoch, 218858eb7932SJeff Layton osdc->epoch_barrier); 218958eb7932SJeff Layton req->r_t.paused = true; 219058eb7932SJeff Layton maybe_request_map(osdc); 219158eb7932SJeff Layton } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 2192b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 21935aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 21945aea3dcdSIlya Dryomov req->r_t.paused = true; 21955aea3dcdSIlya Dryomov maybe_request_map(osdc); 21965aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 2197b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 21985aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 21995aea3dcdSIlya Dryomov req->r_t.paused = true; 22005aea3dcdSIlya Dryomov maybe_request_map(osdc); 22015aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 22025aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 22035aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 2204b7ec35b3SIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 22055aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 22065aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 22075aea3dcdSIlya Dryomov pr_warn_ratelimited("FULL or reached pool quota\n"); 22085aea3dcdSIlya Dryomov req->r_t.paused = true; 22095aea3dcdSIlya Dryomov maybe_request_map(osdc); 2210a1f4020aSJeff Layton if (req->r_abort_on_full) 2211a1f4020aSJeff Layton need_abort = true; 22125aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 22135aea3dcdSIlya Dryomov need_send = true; 22140bbfdfe8SIlya Dryomov } else { 22155aea3dcdSIlya Dryomov maybe_request_map(osdc); 22160bbfdfe8SIlya Dryomov } 22170bbfdfe8SIlya Dryomov 22185aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 22195aea3dcdSIlya Dryomov /* 22205aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 22215aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 22225aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 22235aea3dcdSIlya Dryomov */ 22245aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 22255aea3dcdSIlya Dryomov link_request(osd, req); 22265aea3dcdSIlya Dryomov if (need_send) 22275aea3dcdSIlya Dryomov send_request(req); 2228a1f4020aSJeff Layton else if (need_abort) 2229a1f4020aSJeff Layton complete_request(req, -ENOSPC); 22305aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 22315aea3dcdSIlya Dryomov 22324609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) 22334609245eSIlya Dryomov send_map_check(req); 22344609245eSIlya Dryomov 22355aea3dcdSIlya Dryomov if (promoted) 22365aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 22375aea3dcdSIlya Dryomov return; 22385aea3dcdSIlya Dryomov 22395aea3dcdSIlya Dryomov promote: 22405aea3dcdSIlya Dryomov up_read(&osdc->lock); 22415aea3dcdSIlya Dryomov down_write(&osdc->lock); 22425aea3dcdSIlya Dryomov wrlocked = true; 22435aea3dcdSIlya Dryomov promoted = true; 22445aea3dcdSIlya Dryomov goto again; 22450bbfdfe8SIlya Dryomov } 22460bbfdfe8SIlya Dryomov 22475aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 22485aea3dcdSIlya Dryomov { 224954ea0046SIlya Dryomov WARN_ON(req->r_flags & (CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK)); 2250b18b9550SIlya Dryomov WARN_ON(!(req->r_flags & (CEPH_OSD_FLAG_READ | CEPH_OSD_FLAG_WRITE))); 22515aea3dcdSIlya Dryomov 2252b18b9550SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ONDISK; 22535aea3dcdSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 22547cc5e38fSIlya Dryomov 22557cc5e38fSIlya Dryomov req->r_start_stamp = jiffies; 22565aea3dcdSIlya Dryomov } 22575aea3dcdSIlya Dryomov 22585aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 22595aea3dcdSIlya Dryomov { 22605aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 22615aea3dcdSIlya Dryomov account_request(req); 22625aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 22635aea3dcdSIlya Dryomov } 22645aea3dcdSIlya Dryomov 226545ee2c1dSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 22665aea3dcdSIlya Dryomov { 22675aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 22685aea3dcdSIlya Dryomov 22694609245eSIlya Dryomov WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); 227004c7d789SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 227104c7d789SIlya Dryomov 227204c7d789SIlya Dryomov if (req->r_osd) 227304c7d789SIlya Dryomov unlink_request(req->r_osd, req); 22745aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 22755aea3dcdSIlya Dryomov 22765aea3dcdSIlya Dryomov /* 22775aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 22785aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 22795aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 22805aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 22815aea3dcdSIlya Dryomov */ 22825aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 22835aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 22845aea3dcdSIlya Dryomov } 22855aea3dcdSIlya Dryomov 2286fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 2287fe5da05eSIlya Dryomov { 2288b18b9550SIlya Dryomov if (req->r_callback) { 2289b18b9550SIlya Dryomov dout("%s req %p tid %llu cb %pf result %d\n", __func__, req, 2290b18b9550SIlya Dryomov req->r_tid, req->r_callback, req->r_result); 2291fe5da05eSIlya Dryomov req->r_callback(req); 2292b18b9550SIlya Dryomov } 2293fe5da05eSIlya Dryomov } 2294fe5da05eSIlya Dryomov 22954609245eSIlya Dryomov /* 2296b18b9550SIlya Dryomov * This is open-coded in handle_reply(). 22974609245eSIlya Dryomov */ 22984609245eSIlya Dryomov static void complete_request(struct ceph_osd_request *req, int err) 22994609245eSIlya Dryomov { 23004609245eSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 23014609245eSIlya Dryomov 23024609245eSIlya Dryomov req->r_result = err; 230345ee2c1dSIlya Dryomov finish_request(req); 23044609245eSIlya Dryomov __complete_request(req); 2305b18b9550SIlya Dryomov complete_all(&req->r_completion); 23064609245eSIlya Dryomov ceph_osdc_put_request(req); 23074609245eSIlya Dryomov } 23084609245eSIlya Dryomov 23094609245eSIlya Dryomov static void cancel_map_check(struct ceph_osd_request *req) 23104609245eSIlya Dryomov { 23114609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 23124609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 23134609245eSIlya Dryomov 23144609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 23154609245eSIlya Dryomov 23164609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 23174609245eSIlya Dryomov if (!lookup_req) 23184609245eSIlya Dryomov return; 23194609245eSIlya Dryomov 23204609245eSIlya Dryomov WARN_ON(lookup_req != req); 23214609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 23224609245eSIlya Dryomov ceph_osdc_put_request(req); 23234609245eSIlya Dryomov } 23244609245eSIlya Dryomov 23255aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 23265aea3dcdSIlya Dryomov { 23275aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 23285aea3dcdSIlya Dryomov 23294609245eSIlya Dryomov cancel_map_check(req); 233045ee2c1dSIlya Dryomov finish_request(req); 2331b18b9550SIlya Dryomov complete_all(&req->r_completion); 2332c297eb42SIlya Dryomov ceph_osdc_put_request(req); 23335aea3dcdSIlya Dryomov } 23345aea3dcdSIlya Dryomov 23357cc5e38fSIlya Dryomov static void abort_request(struct ceph_osd_request *req, int err) 23367cc5e38fSIlya Dryomov { 23377cc5e38fSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 23387cc5e38fSIlya Dryomov 23397cc5e38fSIlya Dryomov cancel_map_check(req); 23407cc5e38fSIlya Dryomov complete_request(req, err); 23417cc5e38fSIlya Dryomov } 23427cc5e38fSIlya Dryomov 234358eb7932SJeff Layton static void update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 234458eb7932SJeff Layton { 234558eb7932SJeff Layton if (likely(eb > osdc->epoch_barrier)) { 234658eb7932SJeff Layton dout("updating epoch_barrier from %u to %u\n", 234758eb7932SJeff Layton osdc->epoch_barrier, eb); 234858eb7932SJeff Layton osdc->epoch_barrier = eb; 234958eb7932SJeff Layton /* Request map if we're not to the barrier yet */ 235058eb7932SJeff Layton if (eb > osdc->osdmap->epoch) 235158eb7932SJeff Layton maybe_request_map(osdc); 235258eb7932SJeff Layton } 235358eb7932SJeff Layton } 235458eb7932SJeff Layton 235558eb7932SJeff Layton void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 235658eb7932SJeff Layton { 235758eb7932SJeff Layton down_read(&osdc->lock); 235858eb7932SJeff Layton if (unlikely(eb > osdc->epoch_barrier)) { 235958eb7932SJeff Layton up_read(&osdc->lock); 236058eb7932SJeff Layton down_write(&osdc->lock); 236158eb7932SJeff Layton update_epoch_barrier(osdc, eb); 236258eb7932SJeff Layton up_write(&osdc->lock); 236358eb7932SJeff Layton } else { 236458eb7932SJeff Layton up_read(&osdc->lock); 236558eb7932SJeff Layton } 236658eb7932SJeff Layton } 236758eb7932SJeff Layton EXPORT_SYMBOL(ceph_osdc_update_epoch_barrier); 236858eb7932SJeff Layton 2369fc36d0a4SJeff Layton /* 2370fc36d0a4SJeff Layton * Drop all pending requests that are stalled waiting on a full condition to 237158eb7932SJeff Layton * clear, and complete them with ENOSPC as the return code. Set the 237258eb7932SJeff Layton * osdc->epoch_barrier to the latest map epoch that we've seen if any were 237358eb7932SJeff Layton * cancelled. 2374fc36d0a4SJeff Layton */ 2375fc36d0a4SJeff Layton static void ceph_osdc_abort_on_full(struct ceph_osd_client *osdc) 2376fc36d0a4SJeff Layton { 2377fc36d0a4SJeff Layton struct rb_node *n; 237858eb7932SJeff Layton bool victims = false; 2379fc36d0a4SJeff Layton 2380fc36d0a4SJeff Layton dout("enter abort_on_full\n"); 2381fc36d0a4SJeff Layton 2382fc36d0a4SJeff Layton if (!ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) && !have_pool_full(osdc)) 2383fc36d0a4SJeff Layton goto out; 2384fc36d0a4SJeff Layton 238558eb7932SJeff Layton /* Scan list and see if there is anything to abort */ 238658eb7932SJeff Layton for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 238758eb7932SJeff Layton struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 238858eb7932SJeff Layton struct rb_node *m; 238958eb7932SJeff Layton 239058eb7932SJeff Layton m = rb_first(&osd->o_requests); 239158eb7932SJeff Layton while (m) { 239258eb7932SJeff Layton struct ceph_osd_request *req = rb_entry(m, 239358eb7932SJeff Layton struct ceph_osd_request, r_node); 239458eb7932SJeff Layton m = rb_next(m); 239558eb7932SJeff Layton 239658eb7932SJeff Layton if (req->r_abort_on_full) { 239758eb7932SJeff Layton victims = true; 239858eb7932SJeff Layton break; 239958eb7932SJeff Layton } 240058eb7932SJeff Layton } 240158eb7932SJeff Layton if (victims) 240258eb7932SJeff Layton break; 240358eb7932SJeff Layton } 240458eb7932SJeff Layton 240558eb7932SJeff Layton if (!victims) 240658eb7932SJeff Layton goto out; 240758eb7932SJeff Layton 240858eb7932SJeff Layton /* 240958eb7932SJeff Layton * Update the barrier to current epoch if it's behind that point, 241058eb7932SJeff Layton * since we know we have some calls to be aborted in the tree. 241158eb7932SJeff Layton */ 241258eb7932SJeff Layton update_epoch_barrier(osdc, osdc->osdmap->epoch); 241358eb7932SJeff Layton 2414fc36d0a4SJeff Layton for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 2415fc36d0a4SJeff Layton struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 2416fc36d0a4SJeff Layton struct rb_node *m; 2417fc36d0a4SJeff Layton 2418fc36d0a4SJeff Layton m = rb_first(&osd->o_requests); 2419fc36d0a4SJeff Layton while (m) { 2420fc36d0a4SJeff Layton struct ceph_osd_request *req = rb_entry(m, 2421fc36d0a4SJeff Layton struct ceph_osd_request, r_node); 2422fc36d0a4SJeff Layton m = rb_next(m); 2423fc36d0a4SJeff Layton 2424fc36d0a4SJeff Layton if (req->r_abort_on_full && 2425fc36d0a4SJeff Layton (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2426fc36d0a4SJeff Layton pool_full(osdc, req->r_t.target_oloc.pool))) 2427fc36d0a4SJeff Layton abort_request(req, -ENOSPC); 2428fc36d0a4SJeff Layton } 2429fc36d0a4SJeff Layton } 2430fc36d0a4SJeff Layton out: 243158eb7932SJeff Layton dout("return abort_on_full barrier=%u\n", osdc->epoch_barrier); 2432fc36d0a4SJeff Layton } 2433fc36d0a4SJeff Layton 24344609245eSIlya Dryomov static void check_pool_dne(struct ceph_osd_request *req) 24354609245eSIlya Dryomov { 24364609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 24374609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 24384609245eSIlya Dryomov 24394609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 24404609245eSIlya Dryomov WARN_ON(!map->epoch); 24414609245eSIlya Dryomov 24424609245eSIlya Dryomov if (req->r_attempts) { 24434609245eSIlya Dryomov /* 24444609245eSIlya Dryomov * We sent a request earlier, which means that 24454609245eSIlya Dryomov * previously the pool existed, and now it does not 24464609245eSIlya Dryomov * (i.e., it was deleted). 24474609245eSIlya Dryomov */ 24484609245eSIlya Dryomov req->r_map_dne_bound = map->epoch; 24494609245eSIlya Dryomov dout("%s req %p tid %llu pool disappeared\n", __func__, req, 24504609245eSIlya Dryomov req->r_tid); 24514609245eSIlya Dryomov } else { 24524609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, 24534609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, map->epoch); 24544609245eSIlya Dryomov } 24554609245eSIlya Dryomov 24564609245eSIlya Dryomov if (req->r_map_dne_bound) { 24574609245eSIlya Dryomov if (map->epoch >= req->r_map_dne_bound) { 24584609245eSIlya Dryomov /* we had a new enough map */ 24594609245eSIlya Dryomov pr_info_ratelimited("tid %llu pool does not exist\n", 24604609245eSIlya Dryomov req->r_tid); 24614609245eSIlya Dryomov complete_request(req, -ENOENT); 24624609245eSIlya Dryomov } 24634609245eSIlya Dryomov } else { 24644609245eSIlya Dryomov send_map_check(req); 24654609245eSIlya Dryomov } 24664609245eSIlya Dryomov } 24674609245eSIlya Dryomov 24684609245eSIlya Dryomov static void map_check_cb(struct ceph_mon_generic_request *greq) 24694609245eSIlya Dryomov { 24704609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 24714609245eSIlya Dryomov struct ceph_osd_request *req; 24724609245eSIlya Dryomov u64 tid = greq->private_data; 24734609245eSIlya Dryomov 24744609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 24754609245eSIlya Dryomov 24764609245eSIlya Dryomov down_write(&osdc->lock); 24774609245eSIlya Dryomov req = lookup_request_mc(&osdc->map_checks, tid); 24784609245eSIlya Dryomov if (!req) { 24794609245eSIlya Dryomov dout("%s tid %llu dne\n", __func__, tid); 24804609245eSIlya Dryomov goto out_unlock; 24814609245eSIlya Dryomov } 24824609245eSIlya Dryomov 24834609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, 24844609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, greq->u.newest); 24854609245eSIlya Dryomov if (!req->r_map_dne_bound) 24864609245eSIlya Dryomov req->r_map_dne_bound = greq->u.newest; 24874609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 24884609245eSIlya Dryomov check_pool_dne(req); 24894609245eSIlya Dryomov 24904609245eSIlya Dryomov ceph_osdc_put_request(req); 24914609245eSIlya Dryomov out_unlock: 24924609245eSIlya Dryomov up_write(&osdc->lock); 24934609245eSIlya Dryomov } 24944609245eSIlya Dryomov 24954609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req) 24964609245eSIlya Dryomov { 24974609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 24984609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 24994609245eSIlya Dryomov int ret; 25004609245eSIlya Dryomov 25014609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 25024609245eSIlya Dryomov 25034609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 25044609245eSIlya Dryomov if (lookup_req) { 25054609245eSIlya Dryomov WARN_ON(lookup_req != req); 25064609245eSIlya Dryomov return; 25074609245eSIlya Dryomov } 25084609245eSIlya Dryomov 25094609245eSIlya Dryomov ceph_osdc_get_request(req); 25104609245eSIlya Dryomov insert_request_mc(&osdc->map_checks, req); 25114609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 25124609245eSIlya Dryomov map_check_cb, req->r_tid); 25134609245eSIlya Dryomov WARN_ON(ret); 25144609245eSIlya Dryomov } 25154609245eSIlya Dryomov 25160bbfdfe8SIlya Dryomov /* 2517922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 2518922dab61SIlya Dryomov */ 2519922dab61SIlya Dryomov static void linger_release(struct kref *kref) 2520922dab61SIlya Dryomov { 2521922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2522922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 2523922dab61SIlya Dryomov 2524922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 2525922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 2526922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 2527922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 25284609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); 2529922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 2530b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lreq->pending_lworks)); 2531922dab61SIlya Dryomov WARN_ON(lreq->osd); 2532922dab61SIlya Dryomov 2533922dab61SIlya Dryomov if (lreq->reg_req) 2534922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 2535922dab61SIlya Dryomov if (lreq->ping_req) 2536922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 2537922dab61SIlya Dryomov target_destroy(&lreq->t); 2538922dab61SIlya Dryomov kfree(lreq); 2539922dab61SIlya Dryomov } 2540922dab61SIlya Dryomov 2541922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 2542922dab61SIlya Dryomov { 2543922dab61SIlya Dryomov if (lreq) 2544922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 2545922dab61SIlya Dryomov } 2546922dab61SIlya Dryomov 2547922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2548922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 2549922dab61SIlya Dryomov { 2550922dab61SIlya Dryomov kref_get(&lreq->kref); 2551922dab61SIlya Dryomov return lreq; 2552922dab61SIlya Dryomov } 2553922dab61SIlya Dryomov 2554922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2555922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 2556922dab61SIlya Dryomov { 2557922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2558922dab61SIlya Dryomov 2559922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 2560922dab61SIlya Dryomov if (!lreq) 2561922dab61SIlya Dryomov return NULL; 2562922dab61SIlya Dryomov 2563922dab61SIlya Dryomov kref_init(&lreq->kref); 2564922dab61SIlya Dryomov mutex_init(&lreq->lock); 2565922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 2566922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 25674609245eSIlya Dryomov RB_CLEAR_NODE(&lreq->mc_node); 2568922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 2569b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lreq->pending_lworks); 2570922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 257119079203SIlya Dryomov init_completion(&lreq->notify_finish_wait); 2572922dab61SIlya Dryomov 2573922dab61SIlya Dryomov lreq->osdc = osdc; 2574922dab61SIlya Dryomov target_init(&lreq->t); 2575922dab61SIlya Dryomov 2576922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 2577922dab61SIlya Dryomov return lreq; 2578922dab61SIlya Dryomov } 2579922dab61SIlya Dryomov 2580922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 2581922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 25824609245eSIlya Dryomov DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) 2583922dab61SIlya Dryomov 2584922dab61SIlya Dryomov /* 2585922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 2586922dab61SIlya Dryomov * 2587922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 2588922dab61SIlya Dryomov */ 2589922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 2590922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2591922dab61SIlya Dryomov { 2592922dab61SIlya Dryomov verify_osd_locked(osd); 2593922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 2594922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2595922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2596922dab61SIlya Dryomov 2597922dab61SIlya Dryomov if (!osd_homeless(osd)) 2598922dab61SIlya Dryomov __remove_osd_from_lru(osd); 2599922dab61SIlya Dryomov else 2600922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 2601922dab61SIlya Dryomov 2602922dab61SIlya Dryomov get_osd(osd); 2603922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 2604922dab61SIlya Dryomov lreq->osd = osd; 2605922dab61SIlya Dryomov } 2606922dab61SIlya Dryomov 2607922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 2608922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2609922dab61SIlya Dryomov { 2610922dab61SIlya Dryomov verify_osd_locked(osd); 2611922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 2612922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2613922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2614922dab61SIlya Dryomov 2615922dab61SIlya Dryomov lreq->osd = NULL; 2616922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 2617922dab61SIlya Dryomov put_osd(osd); 2618922dab61SIlya Dryomov 2619922dab61SIlya Dryomov if (!osd_homeless(osd)) 2620922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 2621922dab61SIlya Dryomov else 2622922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 2623922dab61SIlya Dryomov } 2624922dab61SIlya Dryomov 2625922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 2626922dab61SIlya Dryomov { 2627922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 2628922dab61SIlya Dryomov 2629922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 2630922dab61SIlya Dryomov } 2631922dab61SIlya Dryomov 2632922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 2633922dab61SIlya Dryomov { 2634922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2635922dab61SIlya Dryomov bool registered; 2636922dab61SIlya Dryomov 2637922dab61SIlya Dryomov down_read(&osdc->lock); 2638922dab61SIlya Dryomov registered = __linger_registered(lreq); 2639922dab61SIlya Dryomov up_read(&osdc->lock); 2640922dab61SIlya Dryomov 2641922dab61SIlya Dryomov return registered; 2642922dab61SIlya Dryomov } 2643922dab61SIlya Dryomov 2644922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 2645922dab61SIlya Dryomov { 2646922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2647922dab61SIlya Dryomov 2648922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2649922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 2650922dab61SIlya Dryomov 2651922dab61SIlya Dryomov linger_get(lreq); 2652922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 2653922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 2654922dab61SIlya Dryomov } 2655922dab61SIlya Dryomov 2656922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 2657922dab61SIlya Dryomov { 2658922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2659922dab61SIlya Dryomov 2660922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2661922dab61SIlya Dryomov 2662922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 2663922dab61SIlya Dryomov linger_put(lreq); 2664922dab61SIlya Dryomov } 2665922dab61SIlya Dryomov 2666922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 2667922dab61SIlya Dryomov { 2668922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2669922dab61SIlya Dryomov 2670922dab61SIlya Dryomov WARN_ON(!req->r_linger); 2671922dab61SIlya Dryomov cancel_request(req); 2672922dab61SIlya Dryomov linger_put(lreq); 2673922dab61SIlya Dryomov } 2674922dab61SIlya Dryomov 2675922dab61SIlya Dryomov struct linger_work { 2676922dab61SIlya Dryomov struct work_struct work; 2677922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2678b07d3c4bSIlya Dryomov struct list_head pending_item; 2679b07d3c4bSIlya Dryomov unsigned long queued_stamp; 2680922dab61SIlya Dryomov 2681922dab61SIlya Dryomov union { 2682922dab61SIlya Dryomov struct { 2683922dab61SIlya Dryomov u64 notify_id; 2684922dab61SIlya Dryomov u64 notifier_id; 2685922dab61SIlya Dryomov void *payload; /* points into @msg front */ 2686922dab61SIlya Dryomov size_t payload_len; 2687922dab61SIlya Dryomov 2688922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 2689922dab61SIlya Dryomov } notify; 2690922dab61SIlya Dryomov struct { 2691922dab61SIlya Dryomov int err; 2692922dab61SIlya Dryomov } error; 2693922dab61SIlya Dryomov }; 2694922dab61SIlya Dryomov }; 2695922dab61SIlya Dryomov 2696922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 2697922dab61SIlya Dryomov work_func_t workfn) 2698922dab61SIlya Dryomov { 2699922dab61SIlya Dryomov struct linger_work *lwork; 2700922dab61SIlya Dryomov 2701922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 2702922dab61SIlya Dryomov if (!lwork) 2703922dab61SIlya Dryomov return NULL; 2704922dab61SIlya Dryomov 2705922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 2706b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lwork->pending_item); 2707922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 2708922dab61SIlya Dryomov 2709922dab61SIlya Dryomov return lwork; 2710922dab61SIlya Dryomov } 2711922dab61SIlya Dryomov 2712922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 2713922dab61SIlya Dryomov { 2714922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2715922dab61SIlya Dryomov 2716b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 2717b07d3c4bSIlya Dryomov list_del(&lwork->pending_item); 2718b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 2719b07d3c4bSIlya Dryomov 2720922dab61SIlya Dryomov linger_put(lreq); 2721922dab61SIlya Dryomov kfree(lwork); 2722922dab61SIlya Dryomov } 2723922dab61SIlya Dryomov 2724922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 2725922dab61SIlya Dryomov { 2726922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2727922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2728922dab61SIlya Dryomov 2729922dab61SIlya Dryomov verify_lreq_locked(lreq); 2730b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lwork->pending_item)); 2731b07d3c4bSIlya Dryomov 2732b07d3c4bSIlya Dryomov lwork->queued_stamp = jiffies; 2733b07d3c4bSIlya Dryomov list_add_tail(&lwork->pending_item, &lreq->pending_lworks); 2734922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 2735922dab61SIlya Dryomov } 2736922dab61SIlya Dryomov 2737922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 2738922dab61SIlya Dryomov { 2739922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2740922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2741922dab61SIlya Dryomov 2742922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2743922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2744922dab61SIlya Dryomov goto out; 2745922dab61SIlya Dryomov } 2746922dab61SIlya Dryomov 274719079203SIlya Dryomov WARN_ON(!lreq->is_watch); 2748922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 2749922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 2750922dab61SIlya Dryomov lwork->notify.payload_len); 2751922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 2752922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 2753922dab61SIlya Dryomov lwork->notify.payload_len); 2754922dab61SIlya Dryomov 2755922dab61SIlya Dryomov out: 2756922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 2757922dab61SIlya Dryomov lwork_free(lwork); 2758922dab61SIlya Dryomov } 2759922dab61SIlya Dryomov 2760922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 2761922dab61SIlya Dryomov { 2762922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2763922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2764922dab61SIlya Dryomov 2765922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2766922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2767922dab61SIlya Dryomov goto out; 2768922dab61SIlya Dryomov } 2769922dab61SIlya Dryomov 2770922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 2771922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 2772922dab61SIlya Dryomov 2773922dab61SIlya Dryomov out: 2774922dab61SIlya Dryomov lwork_free(lwork); 2775922dab61SIlya Dryomov } 2776922dab61SIlya Dryomov 2777922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 2778922dab61SIlya Dryomov { 2779922dab61SIlya Dryomov struct linger_work *lwork; 2780922dab61SIlya Dryomov 2781922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 2782922dab61SIlya Dryomov if (!lwork) { 2783922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 2784922dab61SIlya Dryomov return; 2785922dab61SIlya Dryomov } 2786922dab61SIlya Dryomov 2787922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 2788922dab61SIlya Dryomov lwork_queue(lwork); 2789922dab61SIlya Dryomov } 2790922dab61SIlya Dryomov 2791922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 2792922dab61SIlya Dryomov int result) 2793922dab61SIlya Dryomov { 2794922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 2795922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 2796922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 2797922dab61SIlya Dryomov } 2798922dab61SIlya Dryomov } 2799922dab61SIlya Dryomov 2800922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 2801922dab61SIlya Dryomov { 2802922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2803922dab61SIlya Dryomov 2804922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2805922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 2806922dab61SIlya Dryomov lreq->linger_id, req->r_result); 2807922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 2808922dab61SIlya Dryomov lreq->committed = true; 2809922dab61SIlya Dryomov 281019079203SIlya Dryomov if (!lreq->is_watch) { 281119079203SIlya Dryomov struct ceph_osd_data *osd_data = 281219079203SIlya Dryomov osd_req_op_data(req, 0, notify, response_data); 281319079203SIlya Dryomov void *p = page_address(osd_data->pages[0]); 281419079203SIlya Dryomov 281519079203SIlya Dryomov WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || 281619079203SIlya Dryomov osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); 281719079203SIlya Dryomov 281819079203SIlya Dryomov /* make note of the notify_id */ 281919079203SIlya Dryomov if (req->r_ops[0].outdata_len >= sizeof(u64)) { 282019079203SIlya Dryomov lreq->notify_id = ceph_decode_64(&p); 282119079203SIlya Dryomov dout("lreq %p notify_id %llu\n", lreq, 282219079203SIlya Dryomov lreq->notify_id); 282319079203SIlya Dryomov } else { 282419079203SIlya Dryomov dout("lreq %p no notify_id\n", lreq); 282519079203SIlya Dryomov } 282619079203SIlya Dryomov } 282719079203SIlya Dryomov 2828922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2829922dab61SIlya Dryomov linger_put(lreq); 2830922dab61SIlya Dryomov } 2831922dab61SIlya Dryomov 2832922dab61SIlya Dryomov static int normalize_watch_error(int err) 2833922dab61SIlya Dryomov { 2834922dab61SIlya Dryomov /* 2835922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 2836922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 2837922dab61SIlya Dryomov * the delete appear the same to the user. 2838922dab61SIlya Dryomov */ 2839922dab61SIlya Dryomov if (err == -ENOENT) 2840922dab61SIlya Dryomov err = -ENOTCONN; 2841922dab61SIlya Dryomov 2842922dab61SIlya Dryomov return err; 2843922dab61SIlya Dryomov } 2844922dab61SIlya Dryomov 2845922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 2846922dab61SIlya Dryomov { 2847922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2848922dab61SIlya Dryomov 2849922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2850922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 2851922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 2852922dab61SIlya Dryomov if (req->r_result < 0) { 2853922dab61SIlya Dryomov if (!lreq->last_error) { 2854922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2855922dab61SIlya Dryomov queue_watch_error(lreq); 2856922dab61SIlya Dryomov } 2857922dab61SIlya Dryomov } 2858922dab61SIlya Dryomov 2859922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2860922dab61SIlya Dryomov linger_put(lreq); 2861922dab61SIlya Dryomov } 2862922dab61SIlya Dryomov 2863922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 2864922dab61SIlya Dryomov { 2865922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->reg_req; 2866922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2867922dab61SIlya Dryomov 2868922dab61SIlya Dryomov verify_osdc_wrlocked(req->r_osdc); 2869922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2870922dab61SIlya Dryomov 2871922dab61SIlya Dryomov if (req->r_osd) 2872922dab61SIlya Dryomov cancel_linger_request(req); 2873922dab61SIlya Dryomov 2874922dab61SIlya Dryomov request_reinit(req); 2875922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 2876922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 2877922dab61SIlya Dryomov req->r_flags = lreq->t.flags; 2878922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 2879922dab61SIlya Dryomov 2880922dab61SIlya Dryomov mutex_lock(&lreq->lock); 288119079203SIlya Dryomov if (lreq->is_watch && lreq->committed) { 2882922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2883922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id); 2884922dab61SIlya Dryomov op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; 2885922dab61SIlya Dryomov op->watch.gen = ++lreq->register_gen; 2886922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 2887922dab61SIlya Dryomov op->watch.gen); 2888922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 2889922dab61SIlya Dryomov } else { 289019079203SIlya Dryomov if (!lreq->is_watch) 289119079203SIlya Dryomov lreq->notify_id = 0; 289219079203SIlya Dryomov else 2893922dab61SIlya Dryomov WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); 2894922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 2895922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 2896922dab61SIlya Dryomov } 2897922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2898922dab61SIlya Dryomov 2899922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2900922dab61SIlya Dryomov req->r_linger = true; 2901922dab61SIlya Dryomov 2902922dab61SIlya Dryomov submit_request(req, true); 2903922dab61SIlya Dryomov } 2904922dab61SIlya Dryomov 2905922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 2906922dab61SIlya Dryomov { 2907922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2908922dab61SIlya Dryomov 2909922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2910922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 2911922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 2912922dab61SIlya Dryomov lreq->last_error); 2913922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 2914b07d3c4bSIlya Dryomov if (!req->r_result) { 2915b07d3c4bSIlya Dryomov lreq->watch_valid_thru = lreq->ping_sent; 2916b07d3c4bSIlya Dryomov } else if (!lreq->last_error) { 2917922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2918922dab61SIlya Dryomov queue_watch_error(lreq); 2919922dab61SIlya Dryomov } 2920922dab61SIlya Dryomov } else { 2921922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 2922922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 2923922dab61SIlya Dryomov } 2924922dab61SIlya Dryomov 2925922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2926922dab61SIlya Dryomov linger_put(lreq); 2927922dab61SIlya Dryomov } 2928922dab61SIlya Dryomov 2929922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 2930922dab61SIlya Dryomov { 2931922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2932922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->ping_req; 2933922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2934922dab61SIlya Dryomov 2935b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 2936922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 2937922dab61SIlya Dryomov return; 2938922dab61SIlya Dryomov } 2939922dab61SIlya Dryomov 2940922dab61SIlya Dryomov lreq->ping_sent = jiffies; 2941922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 2942922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 2943922dab61SIlya Dryomov lreq->register_gen); 2944922dab61SIlya Dryomov 2945922dab61SIlya Dryomov if (req->r_osd) 2946922dab61SIlya Dryomov cancel_linger_request(req); 2947922dab61SIlya Dryomov 2948922dab61SIlya Dryomov request_reinit(req); 2949922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 2950922dab61SIlya Dryomov 2951922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2952922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id || 2953922dab61SIlya Dryomov op->watch.op != CEPH_OSD_WATCH_OP_PING); 2954922dab61SIlya Dryomov op->watch.gen = lreq->register_gen; 2955922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 2956922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2957922dab61SIlya Dryomov req->r_linger = true; 2958922dab61SIlya Dryomov 2959922dab61SIlya Dryomov ceph_osdc_get_request(req); 2960922dab61SIlya Dryomov account_request(req); 2961922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 2962922dab61SIlya Dryomov link_request(lreq->osd, req); 2963922dab61SIlya Dryomov send_request(req); 2964922dab61SIlya Dryomov } 2965922dab61SIlya Dryomov 2966922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 2967922dab61SIlya Dryomov { 2968922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2969922dab61SIlya Dryomov struct ceph_osd *osd; 2970922dab61SIlya Dryomov 29717de030d6SIlya Dryomov calc_target(osdc, &lreq->t, NULL, false); 2972922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 2973922dab61SIlya Dryomov link_linger(osd, lreq); 2974922dab61SIlya Dryomov 2975922dab61SIlya Dryomov send_linger(lreq); 2976922dab61SIlya Dryomov } 2977922dab61SIlya Dryomov 29784609245eSIlya Dryomov static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) 29794609245eSIlya Dryomov { 29804609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 29814609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 29824609245eSIlya Dryomov 29834609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 29844609245eSIlya Dryomov 29854609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 29864609245eSIlya Dryomov lreq->linger_id); 29874609245eSIlya Dryomov if (!lookup_lreq) 29884609245eSIlya Dryomov return; 29894609245eSIlya Dryomov 29904609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 29914609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 29924609245eSIlya Dryomov linger_put(lreq); 29934609245eSIlya Dryomov } 29944609245eSIlya Dryomov 2995922dab61SIlya Dryomov /* 2996922dab61SIlya Dryomov * @lreq has to be both registered and linked. 2997922dab61SIlya Dryomov */ 2998922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 2999922dab61SIlya Dryomov { 300019079203SIlya Dryomov if (lreq->is_watch && lreq->ping_req->r_osd) 3001922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 3002922dab61SIlya Dryomov if (lreq->reg_req->r_osd) 3003922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 30044609245eSIlya Dryomov cancel_linger_map_check(lreq); 3005922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3006922dab61SIlya Dryomov linger_unregister(lreq); 3007922dab61SIlya Dryomov } 3008922dab61SIlya Dryomov 3009922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 3010922dab61SIlya Dryomov { 3011922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3012922dab61SIlya Dryomov 3013922dab61SIlya Dryomov down_write(&osdc->lock); 3014922dab61SIlya Dryomov if (__linger_registered(lreq)) 3015922dab61SIlya Dryomov __linger_cancel(lreq); 3016922dab61SIlya Dryomov up_write(&osdc->lock); 3017922dab61SIlya Dryomov } 3018922dab61SIlya Dryomov 30194609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq); 30204609245eSIlya Dryomov 30214609245eSIlya Dryomov static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) 30224609245eSIlya Dryomov { 30234609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 30244609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 30254609245eSIlya Dryomov 30264609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 30274609245eSIlya Dryomov WARN_ON(!map->epoch); 30284609245eSIlya Dryomov 30294609245eSIlya Dryomov if (lreq->register_gen) { 30304609245eSIlya Dryomov lreq->map_dne_bound = map->epoch; 30314609245eSIlya Dryomov dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, 30324609245eSIlya Dryomov lreq, lreq->linger_id); 30334609245eSIlya Dryomov } else { 30344609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", 30354609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 30364609245eSIlya Dryomov map->epoch); 30374609245eSIlya Dryomov } 30384609245eSIlya Dryomov 30394609245eSIlya Dryomov if (lreq->map_dne_bound) { 30404609245eSIlya Dryomov if (map->epoch >= lreq->map_dne_bound) { 30414609245eSIlya Dryomov /* we had a new enough map */ 30424609245eSIlya Dryomov pr_info("linger_id %llu pool does not exist\n", 30434609245eSIlya Dryomov lreq->linger_id); 30444609245eSIlya Dryomov linger_reg_commit_complete(lreq, -ENOENT); 30454609245eSIlya Dryomov __linger_cancel(lreq); 30464609245eSIlya Dryomov } 30474609245eSIlya Dryomov } else { 30484609245eSIlya Dryomov send_linger_map_check(lreq); 30494609245eSIlya Dryomov } 30504609245eSIlya Dryomov } 30514609245eSIlya Dryomov 30524609245eSIlya Dryomov static void linger_map_check_cb(struct ceph_mon_generic_request *greq) 30534609245eSIlya Dryomov { 30544609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 30554609245eSIlya Dryomov struct ceph_osd_linger_request *lreq; 30564609245eSIlya Dryomov u64 linger_id = greq->private_data; 30574609245eSIlya Dryomov 30584609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 30594609245eSIlya Dryomov 30604609245eSIlya Dryomov down_write(&osdc->lock); 30614609245eSIlya Dryomov lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); 30624609245eSIlya Dryomov if (!lreq) { 30634609245eSIlya Dryomov dout("%s linger_id %llu dne\n", __func__, linger_id); 30644609245eSIlya Dryomov goto out_unlock; 30654609245eSIlya Dryomov } 30664609245eSIlya Dryomov 30674609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", 30684609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 30694609245eSIlya Dryomov greq->u.newest); 30704609245eSIlya Dryomov if (!lreq->map_dne_bound) 30714609245eSIlya Dryomov lreq->map_dne_bound = greq->u.newest; 30724609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 30734609245eSIlya Dryomov check_linger_pool_dne(lreq); 30744609245eSIlya Dryomov 30754609245eSIlya Dryomov linger_put(lreq); 30764609245eSIlya Dryomov out_unlock: 30774609245eSIlya Dryomov up_write(&osdc->lock); 30784609245eSIlya Dryomov } 30794609245eSIlya Dryomov 30804609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq) 30814609245eSIlya Dryomov { 30824609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 30834609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 30844609245eSIlya Dryomov int ret; 30854609245eSIlya Dryomov 30864609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 30874609245eSIlya Dryomov 30884609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 30894609245eSIlya Dryomov lreq->linger_id); 30904609245eSIlya Dryomov if (lookup_lreq) { 30914609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 30924609245eSIlya Dryomov return; 30934609245eSIlya Dryomov } 30944609245eSIlya Dryomov 30954609245eSIlya Dryomov linger_get(lreq); 30964609245eSIlya Dryomov insert_linger_mc(&osdc->linger_map_checks, lreq); 30974609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 30984609245eSIlya Dryomov linger_map_check_cb, lreq->linger_id); 30994609245eSIlya Dryomov WARN_ON(ret); 31004609245eSIlya Dryomov } 31014609245eSIlya Dryomov 3102922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 3103922dab61SIlya Dryomov { 3104922dab61SIlya Dryomov int ret; 3105922dab61SIlya Dryomov 3106922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 3107922dab61SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); 3108922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 3109922dab61SIlya Dryomov } 3110922dab61SIlya Dryomov 311119079203SIlya Dryomov static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) 311219079203SIlya Dryomov { 311319079203SIlya Dryomov int ret; 311419079203SIlya Dryomov 311519079203SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 311619079203SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); 311719079203SIlya Dryomov return ret ?: lreq->notify_finish_error; 311819079203SIlya Dryomov } 311919079203SIlya Dryomov 3120922dab61SIlya Dryomov /* 3121fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 3122fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 3123fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 3124fbca9635SIlya Dryomov * reset is detected. 31253d14c5d2SYehuda Sadeh */ 31263d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 31273d14c5d2SYehuda Sadeh { 31283d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 31293d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 3130a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 31315aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 31327cc5e38fSIlya Dryomov unsigned long expiry_cutoff = jiffies - opts->osd_request_timeout; 31335aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 31345aea3dcdSIlya Dryomov struct rb_node *n, *p; 31353d14c5d2SYehuda Sadeh 31365aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 31375aea3dcdSIlya Dryomov down_write(&osdc->lock); 31383d14c5d2SYehuda Sadeh 31393d14c5d2SYehuda Sadeh /* 31403d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 31413d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 31423d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 31433d14c5d2SYehuda Sadeh */ 31445aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 31455aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 31465aea3dcdSIlya Dryomov bool found = false; 31473d14c5d2SYehuda Sadeh 31487cc5e38fSIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 31495aea3dcdSIlya Dryomov struct ceph_osd_request *req = 31505aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 31515aea3dcdSIlya Dryomov 31527cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 31537cc5e38fSIlya Dryomov 31545aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 31555aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 31565aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 31575aea3dcdSIlya Dryomov found = true; 31585aea3dcdSIlya Dryomov } 31597cc5e38fSIlya Dryomov if (opts->osd_request_timeout && 31607cc5e38fSIlya Dryomov time_before(req->r_start_stamp, expiry_cutoff)) { 31617cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 31627cc5e38fSIlya Dryomov req->r_tid, osd->o_osd); 31637cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 31647cc5e38fSIlya Dryomov } 31655aea3dcdSIlya Dryomov } 3166922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 3167922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3168922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 3169922dab61SIlya Dryomov 3170922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 3171922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 3172922dab61SIlya Dryomov found = true; 3173922dab61SIlya Dryomov 3174922dab61SIlya Dryomov mutex_lock(&lreq->lock); 317519079203SIlya Dryomov if (lreq->is_watch && lreq->committed && !lreq->last_error) 3176922dab61SIlya Dryomov send_linger_ping(lreq); 3177922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3178922dab61SIlya Dryomov } 31795aea3dcdSIlya Dryomov 31805aea3dcdSIlya Dryomov if (found) 31813d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 31823d14c5d2SYehuda Sadeh } 31835aea3dcdSIlya Dryomov 31847cc5e38fSIlya Dryomov if (opts->osd_request_timeout) { 31857cc5e38fSIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 31867cc5e38fSIlya Dryomov struct ceph_osd_request *req = 31877cc5e38fSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 31887cc5e38fSIlya Dryomov 31897cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 31907cc5e38fSIlya Dryomov 31917cc5e38fSIlya Dryomov if (time_before(req->r_start_stamp, expiry_cutoff)) { 31927cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 31937cc5e38fSIlya Dryomov req->r_tid, osdc->homeless_osd.o_osd); 31947cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 31957cc5e38fSIlya Dryomov } 31967cc5e38fSIlya Dryomov } 31977cc5e38fSIlya Dryomov } 31987cc5e38fSIlya Dryomov 31995aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 32005aea3dcdSIlya Dryomov maybe_request_map(osdc); 32015aea3dcdSIlya Dryomov 32023d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 32035aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 32045aea3dcdSIlya Dryomov struct ceph_osd, 32053d14c5d2SYehuda Sadeh o_keepalive_item); 32063d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 32073d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 32083d14c5d2SYehuda Sadeh } 32093d14c5d2SYehuda Sadeh 32105aea3dcdSIlya Dryomov up_write(&osdc->lock); 3211fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 3212fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 32133d14c5d2SYehuda Sadeh } 32143d14c5d2SYehuda Sadeh 32153d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 32163d14c5d2SYehuda Sadeh { 32173d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 32183d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 32193d14c5d2SYehuda Sadeh osds_timeout_work.work); 3220a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 322142a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 32223d14c5d2SYehuda Sadeh 322342a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 32245aea3dcdSIlya Dryomov down_write(&osdc->lock); 322542a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 322642a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 322742a2c09fSIlya Dryomov break; 322842a2c09fSIlya Dryomov 32295aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 3230922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 32315aea3dcdSIlya Dryomov close_osd(osd); 323242a2c09fSIlya Dryomov } 323342a2c09fSIlya Dryomov 32345aea3dcdSIlya Dryomov up_write(&osdc->lock); 32353d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 32363d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 32373d14c5d2SYehuda Sadeh } 32383d14c5d2SYehuda Sadeh 3239205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 3240205ee118SIlya Dryomov struct ceph_object_locator *oloc) 3241205ee118SIlya Dryomov { 3242205ee118SIlya Dryomov u8 struct_v, struct_cv; 3243205ee118SIlya Dryomov u32 len; 3244205ee118SIlya Dryomov void *struct_end; 3245205ee118SIlya Dryomov int ret = 0; 3246205ee118SIlya Dryomov 3247205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3248205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3249205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3250205ee118SIlya Dryomov if (struct_v < 3) { 3251205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 3252205ee118SIlya Dryomov struct_v, struct_cv); 3253205ee118SIlya Dryomov goto e_inval; 3254205ee118SIlya Dryomov } 3255205ee118SIlya Dryomov if (struct_cv > 6) { 3256205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 3257205ee118SIlya Dryomov struct_v, struct_cv); 3258205ee118SIlya Dryomov goto e_inval; 3259205ee118SIlya Dryomov } 3260205ee118SIlya Dryomov len = ceph_decode_32(p); 3261205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3262205ee118SIlya Dryomov struct_end = *p + len; 3263205ee118SIlya Dryomov 3264205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 3265205ee118SIlya Dryomov *p += 4; /* skip preferred */ 3266205ee118SIlya Dryomov 3267205ee118SIlya Dryomov len = ceph_decode_32(p); 3268205ee118SIlya Dryomov if (len > 0) { 3269205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 3270205ee118SIlya Dryomov goto e_inval; 3271205ee118SIlya Dryomov } 3272205ee118SIlya Dryomov 3273205ee118SIlya Dryomov if (struct_v >= 5) { 3274cd08e0a2SYan, Zheng bool changed = false; 3275cd08e0a2SYan, Zheng 3276205ee118SIlya Dryomov len = ceph_decode_32(p); 3277205ee118SIlya Dryomov if (len > 0) { 327830c156d9SYan, Zheng ceph_decode_need(p, end, len, e_inval); 3279cd08e0a2SYan, Zheng if (!oloc->pool_ns || 3280cd08e0a2SYan, Zheng ceph_compare_string(oloc->pool_ns, *p, len)) 3281cd08e0a2SYan, Zheng changed = true; 328230c156d9SYan, Zheng *p += len; 3283cd08e0a2SYan, Zheng } else { 3284cd08e0a2SYan, Zheng if (oloc->pool_ns) 3285cd08e0a2SYan, Zheng changed = true; 3286cd08e0a2SYan, Zheng } 3287cd08e0a2SYan, Zheng if (changed) { 3288cd08e0a2SYan, Zheng /* redirect changes namespace */ 3289cd08e0a2SYan, Zheng pr_warn("ceph_object_locator::nspace is changed\n"); 3290cd08e0a2SYan, Zheng goto e_inval; 3291205ee118SIlya Dryomov } 3292205ee118SIlya Dryomov } 3293205ee118SIlya Dryomov 3294205ee118SIlya Dryomov if (struct_v >= 6) { 3295205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 3296205ee118SIlya Dryomov if (hash != -1) { 3297205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 3298205ee118SIlya Dryomov goto e_inval; 3299205ee118SIlya Dryomov } 3300205ee118SIlya Dryomov } 3301205ee118SIlya Dryomov 3302205ee118SIlya Dryomov /* skip the rest */ 3303205ee118SIlya Dryomov *p = struct_end; 3304205ee118SIlya Dryomov out: 3305205ee118SIlya Dryomov return ret; 3306205ee118SIlya Dryomov 3307205ee118SIlya Dryomov e_inval: 3308205ee118SIlya Dryomov ret = -EINVAL; 3309205ee118SIlya Dryomov goto out; 3310205ee118SIlya Dryomov } 3311205ee118SIlya Dryomov 3312205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 3313205ee118SIlya Dryomov struct ceph_request_redirect *redir) 3314205ee118SIlya Dryomov { 3315205ee118SIlya Dryomov u8 struct_v, struct_cv; 3316205ee118SIlya Dryomov u32 len; 3317205ee118SIlya Dryomov void *struct_end; 3318205ee118SIlya Dryomov int ret; 3319205ee118SIlya Dryomov 3320205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3321205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3322205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3323205ee118SIlya Dryomov if (struct_cv > 1) { 3324205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 3325205ee118SIlya Dryomov struct_v, struct_cv); 3326205ee118SIlya Dryomov goto e_inval; 3327205ee118SIlya Dryomov } 3328205ee118SIlya Dryomov len = ceph_decode_32(p); 3329205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3330205ee118SIlya Dryomov struct_end = *p + len; 3331205ee118SIlya Dryomov 3332205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 3333205ee118SIlya Dryomov if (ret) 3334205ee118SIlya Dryomov goto out; 3335205ee118SIlya Dryomov 3336205ee118SIlya Dryomov len = ceph_decode_32(p); 3337205ee118SIlya Dryomov if (len > 0) { 3338205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 3339205ee118SIlya Dryomov goto e_inval; 3340205ee118SIlya Dryomov } 3341205ee118SIlya Dryomov 3342205ee118SIlya Dryomov len = ceph_decode_32(p); 3343205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 3344205ee118SIlya Dryomov 3345205ee118SIlya Dryomov /* skip the rest */ 3346205ee118SIlya Dryomov *p = struct_end; 3347205ee118SIlya Dryomov out: 3348205ee118SIlya Dryomov return ret; 3349205ee118SIlya Dryomov 3350205ee118SIlya Dryomov e_inval: 3351205ee118SIlya Dryomov ret = -EINVAL; 3352205ee118SIlya Dryomov goto out; 3353205ee118SIlya Dryomov } 3354205ee118SIlya Dryomov 3355fe5da05eSIlya Dryomov struct MOSDOpReply { 3356fe5da05eSIlya Dryomov struct ceph_pg pgid; 3357fe5da05eSIlya Dryomov u64 flags; 3358fe5da05eSIlya Dryomov int result; 3359fe5da05eSIlya Dryomov u32 epoch; 3360fe5da05eSIlya Dryomov int num_ops; 3361fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 3362fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 3363fe5da05eSIlya Dryomov int retry_attempt; 3364fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 3365fe5da05eSIlya Dryomov u64 user_version; 3366fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 3367fe5da05eSIlya Dryomov }; 336825845472SSage Weil 3369fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 33703d14c5d2SYehuda Sadeh { 3371fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 3372fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 3373fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 3374fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 3375b0b31a8fSIlya Dryomov u8 decode_redir; 3376fe5da05eSIlya Dryomov u32 len; 3377fe5da05eSIlya Dryomov int ret; 3378fe5da05eSIlya Dryomov int i; 33793d14c5d2SYehuda Sadeh 3380fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 3381fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 3382fe5da05eSIlya Dryomov p += len; /* skip oid */ 33831b83bef2SSage Weil 3384fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 3385fe5da05eSIlya Dryomov if (ret) 3386fe5da05eSIlya Dryomov return ret; 33871b83bef2SSage Weil 3388fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 3389fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 3390fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 3391fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 3392fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 3393fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 33941b83bef2SSage Weil 3395fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 3396fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 3397fe5da05eSIlya Dryomov goto e_inval; 33981b83bef2SSage Weil 3399fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 3400fe5da05eSIlya Dryomov e_inval); 3401fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 34021b83bef2SSage Weil struct ceph_osd_op *op = p; 34031b83bef2SSage Weil 3404fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 34051b83bef2SSage Weil p += sizeof(*op); 34061b83bef2SSage Weil } 3407fe5da05eSIlya Dryomov 3408fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 3409fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 3410fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 3411fe5da05eSIlya Dryomov 3412fe5da05eSIlya Dryomov if (version >= 5) { 3413fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 3414fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 3415fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 3416fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 3417fe5da05eSIlya Dryomov } else { 3418fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 3419fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 34201b83bef2SSage Weil } 34211b83bef2SSage Weil 3422fe5da05eSIlya Dryomov if (version >= 6) { 3423fe5da05eSIlya Dryomov if (version >= 7) 3424fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 3425b0b31a8fSIlya Dryomov else 3426b0b31a8fSIlya Dryomov decode_redir = 1; 3427b0b31a8fSIlya Dryomov } else { 3428b0b31a8fSIlya Dryomov decode_redir = 0; 3429b0b31a8fSIlya Dryomov } 3430b0b31a8fSIlya Dryomov 3431b0b31a8fSIlya Dryomov if (decode_redir) { 3432fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 3433fe5da05eSIlya Dryomov if (ret) 3434fe5da05eSIlya Dryomov return ret; 3435205ee118SIlya Dryomov } else { 3436fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 3437205ee118SIlya Dryomov } 3438205ee118SIlya Dryomov 3439fe5da05eSIlya Dryomov return 0; 3440205ee118SIlya Dryomov 3441fe5da05eSIlya Dryomov e_inval: 3442fe5da05eSIlya Dryomov return -EINVAL; 3443fe5da05eSIlya Dryomov } 3444fe5da05eSIlya Dryomov 3445fe5da05eSIlya Dryomov /* 3446b18b9550SIlya Dryomov * Handle MOSDOpReply. Set ->r_result and call the callback if it is 3447b18b9550SIlya Dryomov * specified. 3448fe5da05eSIlya Dryomov */ 34495aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 3450fe5da05eSIlya Dryomov { 34515aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 3452fe5da05eSIlya Dryomov struct ceph_osd_request *req; 3453fe5da05eSIlya Dryomov struct MOSDOpReply m; 3454fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 3455fe5da05eSIlya Dryomov u32 data_len = 0; 3456fe5da05eSIlya Dryomov int ret; 3457fe5da05eSIlya Dryomov int i; 3458fe5da05eSIlya Dryomov 3459fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 3460fe5da05eSIlya Dryomov 34615aea3dcdSIlya Dryomov down_read(&osdc->lock); 34625aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 34635aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 34645aea3dcdSIlya Dryomov goto out_unlock_osdc; 3465fe5da05eSIlya Dryomov } 34665aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 34675aea3dcdSIlya Dryomov 34685aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 34695aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 34705aea3dcdSIlya Dryomov if (!req) { 34715aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 34725aea3dcdSIlya Dryomov goto out_unlock_session; 34735aea3dcdSIlya Dryomov } 3474fe5da05eSIlya Dryomov 3475cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns; 3476fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 3477cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = NULL; 3478fe5da05eSIlya Dryomov if (ret) { 3479fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 3480fe5da05eSIlya Dryomov req->r_tid, ret); 3481fe5da05eSIlya Dryomov ceph_msg_dump(msg); 3482fe5da05eSIlya Dryomov goto fail_request; 3483fe5da05eSIlya Dryomov } 3484fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 3485fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 3486fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 3487fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 3488fe5da05eSIlya Dryomov 3489fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 3490fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 3491fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 3492fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 3493fe5da05eSIlya Dryomov req->r_attempts - 1); 34945aea3dcdSIlya Dryomov goto out_unlock_session; 3495fe5da05eSIlya Dryomov } 3496fe5da05eSIlya Dryomov } else { 3497fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 3498fe5da05eSIlya Dryomov } 3499fe5da05eSIlya Dryomov 3500fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 3501fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 3502fe5da05eSIlya Dryomov m.redirect.oloc.pool); 35035aea3dcdSIlya Dryomov unlink_request(osd, req); 35045aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 3505205ee118SIlya Dryomov 350630c156d9SYan, Zheng /* 350730c156d9SYan, Zheng * Not ceph_oloc_copy() - changing pool_ns is not 350830c156d9SYan, Zheng * supported. 350930c156d9SYan, Zheng */ 351030c156d9SYan, Zheng req->r_t.target_oloc.pool = m.redirect.oloc.pool; 35115aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; 35125aea3dcdSIlya Dryomov req->r_tid = 0; 35135aea3dcdSIlya Dryomov __submit_request(req, false); 35145aea3dcdSIlya Dryomov goto out_unlock_osdc; 3515205ee118SIlya Dryomov } 3516205ee118SIlya Dryomov 3517fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 3518fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 3519fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 3520fe5da05eSIlya Dryomov goto fail_request; 3521fe5da05eSIlya Dryomov } 3522fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 3523fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 3524fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 3525fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 3526fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 3527fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 3528fe5da05eSIlya Dryomov } 3529fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 3530fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 3531fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 3532fe5da05eSIlya Dryomov goto fail_request; 3533fe5da05eSIlya Dryomov } 3534b18b9550SIlya Dryomov dout("%s req %p tid %llu result %d data_len %u\n", __func__, 3535b18b9550SIlya Dryomov req, req->r_tid, m.result, data_len); 35363d14c5d2SYehuda Sadeh 3537b18b9550SIlya Dryomov /* 3538b18b9550SIlya Dryomov * Since we only ever request ONDISK, we should only ever get 3539b18b9550SIlya Dryomov * one (type of) reply back. 3540b18b9550SIlya Dryomov */ 3541b18b9550SIlya Dryomov WARN_ON(!(m.flags & CEPH_OSD_FLAG_ONDISK)); 3542fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 354345ee2c1dSIlya Dryomov finish_request(req); 35445aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 35455aea3dcdSIlya Dryomov up_read(&osdc->lock); 35463d14c5d2SYehuda Sadeh 3547fe5da05eSIlya Dryomov __complete_request(req); 3548b18b9550SIlya Dryomov complete_all(&req->r_completion); 3549dc045a91SIlya Dryomov ceph_osdc_put_request(req); 35503d14c5d2SYehuda Sadeh return; 3551fe5da05eSIlya Dryomov 3552fe5da05eSIlya Dryomov fail_request: 35534609245eSIlya Dryomov complete_request(req, -EIO); 35545aea3dcdSIlya Dryomov out_unlock_session: 35555aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 35565aea3dcdSIlya Dryomov out_unlock_osdc: 35575aea3dcdSIlya Dryomov up_read(&osdc->lock); 35583d14c5d2SYehuda Sadeh } 35593d14c5d2SYehuda Sadeh 356042c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 356142c1b124SIlya Dryomov { 356242c1b124SIlya Dryomov struct rb_node *n; 356342c1b124SIlya Dryomov 356442c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 356542c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 356642c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 356742c1b124SIlya Dryomov 356842c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 356942c1b124SIlya Dryomov } 357042c1b124SIlya Dryomov } 357142c1b124SIlya Dryomov 35725aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 35733d14c5d2SYehuda Sadeh { 35745aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 35753d14c5d2SYehuda Sadeh 35765aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 35775aea3dcdSIlya Dryomov if (!pi) 35785aea3dcdSIlya Dryomov return false; 35793d14c5d2SYehuda Sadeh 35805aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 35813d14c5d2SYehuda Sadeh } 35823d14c5d2SYehuda Sadeh 3583922dab61SIlya Dryomov static enum calc_target_result 3584922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 3585922dab61SIlya Dryomov { 3586922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3587922dab61SIlya Dryomov enum calc_target_result ct_res; 3588922dab61SIlya Dryomov 35897de030d6SIlya Dryomov ct_res = calc_target(osdc, &lreq->t, NULL, true); 3590922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 3591922dab61SIlya Dryomov struct ceph_osd *osd; 3592922dab61SIlya Dryomov 3593922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3594922dab61SIlya Dryomov if (osd != lreq->osd) { 3595922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3596922dab61SIlya Dryomov link_linger(osd, lreq); 3597922dab61SIlya Dryomov } 3598922dab61SIlya Dryomov } 3599922dab61SIlya Dryomov 3600922dab61SIlya Dryomov return ct_res; 3601922dab61SIlya Dryomov } 3602922dab61SIlya Dryomov 36033d14c5d2SYehuda Sadeh /* 36045aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 36053d14c5d2SYehuda Sadeh */ 36065aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 36075aea3dcdSIlya Dryomov bool force_resend, 36085aea3dcdSIlya Dryomov bool cleared_full, 36095aea3dcdSIlya Dryomov bool check_pool_cleared_full, 36105aea3dcdSIlya Dryomov struct rb_root *need_resend, 36115aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 36123d14c5d2SYehuda Sadeh { 36135aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 36145aea3dcdSIlya Dryomov struct rb_node *n; 36155aea3dcdSIlya Dryomov bool force_resend_writes; 36163d14c5d2SYehuda Sadeh 3617922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 3618922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3619922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3620922dab61SIlya Dryomov enum calc_target_result ct_res; 3621922dab61SIlya Dryomov 3622922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 3623922dab61SIlya Dryomov 3624922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 3625922dab61SIlya Dryomov lreq->linger_id); 3626922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 3627922dab61SIlya Dryomov switch (ct_res) { 3628922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 3629922dab61SIlya Dryomov force_resend_writes = cleared_full || 3630922dab61SIlya Dryomov (check_pool_cleared_full && 3631922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 3632922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 3633922dab61SIlya Dryomov break; 3634922dab61SIlya Dryomov 3635922dab61SIlya Dryomov /* fall through */ 3636922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 36374609245eSIlya Dryomov cancel_linger_map_check(lreq); 3638922dab61SIlya Dryomov /* 3639922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 3640922dab61SIlya Dryomov * may have already added it to the list, since 3641922dab61SIlya Dryomov * it's not unlinked here. 3642922dab61SIlya Dryomov */ 3643922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 3644922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 3645922dab61SIlya Dryomov break; 3646922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 3647a10bcb19SIlya Dryomov list_del_init(&lreq->scan_item); 36484609245eSIlya Dryomov check_linger_pool_dne(lreq); 3649922dab61SIlya Dryomov break; 3650922dab61SIlya Dryomov } 3651922dab61SIlya Dryomov } 3652922dab61SIlya Dryomov 36535aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 36545aea3dcdSIlya Dryomov struct ceph_osd_request *req = 36555aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 36565aea3dcdSIlya Dryomov enum calc_target_result ct_res; 3657ab60b16dSAlex Elder 36584609245eSIlya Dryomov n = rb_next(n); /* unlink_request(), check_pool_dne() */ 3659ab60b16dSAlex Elder 36605aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 36617de030d6SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, &req->r_osd->o_con, 36627de030d6SIlya Dryomov false); 36635aea3dcdSIlya Dryomov switch (ct_res) { 36645aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 36655aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 36665aea3dcdSIlya Dryomov (check_pool_cleared_full && 36675aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 36685aea3dcdSIlya Dryomov if (!force_resend && 36695aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 36705aea3dcdSIlya Dryomov !force_resend_writes)) 36715aea3dcdSIlya Dryomov break; 3672a40c4f10SYehuda Sadeh 36735aea3dcdSIlya Dryomov /* fall through */ 36745aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 36754609245eSIlya Dryomov cancel_map_check(req); 36765aea3dcdSIlya Dryomov unlink_request(osd, req); 36775aea3dcdSIlya Dryomov insert_request(need_resend, req); 36785aea3dcdSIlya Dryomov break; 36795aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 36804609245eSIlya Dryomov check_pool_dne(req); 36815aea3dcdSIlya Dryomov break; 3682a40c4f10SYehuda Sadeh } 36833d14c5d2SYehuda Sadeh } 36843d14c5d2SYehuda Sadeh } 36856f6c7006SSage Weil 368642c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 36875aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 36885aea3dcdSIlya Dryomov struct rb_root *need_resend, 36895aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 369042c1b124SIlya Dryomov { 369142c1b124SIlya Dryomov struct ceph_osdmap *newmap; 369242c1b124SIlya Dryomov struct rb_node *n; 369342c1b124SIlya Dryomov bool skipped_map = false; 369442c1b124SIlya Dryomov bool was_full; 369542c1b124SIlya Dryomov 3696b7ec35b3SIlya Dryomov was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 369742c1b124SIlya Dryomov set_pool_was_full(osdc); 369842c1b124SIlya Dryomov 369942c1b124SIlya Dryomov if (incremental) 370042c1b124SIlya Dryomov newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); 370142c1b124SIlya Dryomov else 370242c1b124SIlya Dryomov newmap = ceph_osdmap_decode(&p, end); 370342c1b124SIlya Dryomov if (IS_ERR(newmap)) 370442c1b124SIlya Dryomov return PTR_ERR(newmap); 370542c1b124SIlya Dryomov 370642c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 370742c1b124SIlya Dryomov /* 370842c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 370942c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 371042c1b124SIlya Dryomov * should be false. 371142c1b124SIlya Dryomov */ 371242c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 371342c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 371442c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 371542c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 371642c1b124SIlya Dryomov 371742c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 371842c1b124SIlya Dryomov if (old_pi) 371942c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 372042c1b124SIlya Dryomov else 372142c1b124SIlya Dryomov WARN_ON(pi->was_full); 372242c1b124SIlya Dryomov } 372342c1b124SIlya Dryomov 372442c1b124SIlya Dryomov if (osdc->osdmap->epoch && 372542c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 372642c1b124SIlya Dryomov WARN_ON(incremental); 372742c1b124SIlya Dryomov skipped_map = true; 372842c1b124SIlya Dryomov } 372942c1b124SIlya Dryomov 373042c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 373142c1b124SIlya Dryomov osdc->osdmap = newmap; 373242c1b124SIlya Dryomov } 373342c1b124SIlya Dryomov 3734b7ec35b3SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 37355aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 37365aea3dcdSIlya Dryomov need_resend, need_resend_linger); 37375aea3dcdSIlya Dryomov 37385aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 37395aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 37405aea3dcdSIlya Dryomov 37415aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 37425aea3dcdSIlya Dryomov 37435aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 37445aea3dcdSIlya Dryomov need_resend_linger); 37455aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 37465aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 37475aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 37485aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 37495aea3dcdSIlya Dryomov close_osd(osd); 37505aea3dcdSIlya Dryomov } 375142c1b124SIlya Dryomov 375242c1b124SIlya Dryomov return 0; 375342c1b124SIlya Dryomov } 37546f6c7006SSage Weil 37555aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 37565aea3dcdSIlya Dryomov struct rb_root *need_resend, 37575aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 37585aea3dcdSIlya Dryomov { 3759922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 376004c7d789SIlya Dryomov enum calc_target_result ct_res; 37615aea3dcdSIlya Dryomov struct rb_node *n; 37625aea3dcdSIlya Dryomov 376304c7d789SIlya Dryomov /* make sure need_resend targets reflect latest map */ 376404c7d789SIlya Dryomov for (n = rb_first(need_resend); n; ) { 376504c7d789SIlya Dryomov struct ceph_osd_request *req = 376604c7d789SIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 376704c7d789SIlya Dryomov 376804c7d789SIlya Dryomov n = rb_next(n); 376904c7d789SIlya Dryomov 377004c7d789SIlya Dryomov if (req->r_t.epoch < osdc->osdmap->epoch) { 377104c7d789SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, NULL, false); 377204c7d789SIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) { 377304c7d789SIlya Dryomov erase_request(need_resend, req); 377404c7d789SIlya Dryomov check_pool_dne(req); 377504c7d789SIlya Dryomov } 377604c7d789SIlya Dryomov } 377704c7d789SIlya Dryomov } 377804c7d789SIlya Dryomov 37795aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 37805aea3dcdSIlya Dryomov struct ceph_osd_request *req = 37815aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 37825aea3dcdSIlya Dryomov struct ceph_osd *osd; 37835aea3dcdSIlya Dryomov 37845aea3dcdSIlya Dryomov n = rb_next(n); 37855aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 37865aea3dcdSIlya Dryomov 37875aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 37885aea3dcdSIlya Dryomov link_request(osd, req); 37895aea3dcdSIlya Dryomov if (!req->r_linger) { 37905aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 37915aea3dcdSIlya Dryomov send_request(req); 3792922dab61SIlya Dryomov } else { 3793922dab61SIlya Dryomov cancel_linger_request(req); 37945aea3dcdSIlya Dryomov } 37955aea3dcdSIlya Dryomov } 3796922dab61SIlya Dryomov 3797922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 3798922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 3799922dab61SIlya Dryomov send_linger(lreq); 3800922dab61SIlya Dryomov 3801922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 3802922dab61SIlya Dryomov } 38035aea3dcdSIlya Dryomov } 38045aea3dcdSIlya Dryomov 38053d14c5d2SYehuda Sadeh /* 38063d14c5d2SYehuda Sadeh * Process updated osd map. 38073d14c5d2SYehuda Sadeh * 38083d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 38093d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 38103d14c5d2SYehuda Sadeh * off to different OSDs as needed. 38113d14c5d2SYehuda Sadeh */ 38123d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 38133d14c5d2SYehuda Sadeh { 381442c1b124SIlya Dryomov void *p = msg->front.iov_base; 381542c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 38163d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 38173d14c5d2SYehuda Sadeh u32 epoch; 38183d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 38195aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 38205aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 382142c1b124SIlya Dryomov bool handled_incremental = false; 382242c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 382342c1b124SIlya Dryomov bool pauserd, pausewr; 382442c1b124SIlya Dryomov int err; 38253d14c5d2SYehuda Sadeh 382642c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 38275aea3dcdSIlya Dryomov down_write(&osdc->lock); 38283d14c5d2SYehuda Sadeh 38293d14c5d2SYehuda Sadeh /* verify fsid */ 38303d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 38313d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 38323d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 383342c1b124SIlya Dryomov goto bad; 38343d14c5d2SYehuda Sadeh 3835b7ec35b3SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3836b7ec35b3SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3837b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 383842c1b124SIlya Dryomov have_pool_full(osdc); 38399a1ea2dbSJosh Durgin 38403d14c5d2SYehuda Sadeh /* incremental maps */ 38413d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 38423d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 38433d14c5d2SYehuda Sadeh while (nr_maps > 0) { 38443d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 38453d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 38463d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 38473d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 384842c1b124SIlya Dryomov if (osdc->osdmap->epoch && 384942c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 38503d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 38513d14c5d2SYehuda Sadeh epoch, maplen); 38525aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 38535aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 385442c1b124SIlya Dryomov if (err) 38553d14c5d2SYehuda Sadeh goto bad; 385642c1b124SIlya Dryomov handled_incremental = true; 38573d14c5d2SYehuda Sadeh } else { 38583d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 38593d14c5d2SYehuda Sadeh epoch, maplen); 38603d14c5d2SYehuda Sadeh } 386142c1b124SIlya Dryomov p += maplen; 38623d14c5d2SYehuda Sadeh nr_maps--; 38633d14c5d2SYehuda Sadeh } 386442c1b124SIlya Dryomov if (handled_incremental) 38653d14c5d2SYehuda Sadeh goto done; 38663d14c5d2SYehuda Sadeh 38673d14c5d2SYehuda Sadeh /* full maps */ 38683d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 38693d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 38703d14c5d2SYehuda Sadeh while (nr_maps) { 38713d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 38723d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 38733d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 38743d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 38753d14c5d2SYehuda Sadeh if (nr_maps > 1) { 38763d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 38773d14c5d2SYehuda Sadeh epoch, maplen); 3878e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 38793d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 38803d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 38813d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 38823d14c5d2SYehuda Sadeh } else { 38833d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 38845aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 38855aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 388642c1b124SIlya Dryomov if (err) 38873d14c5d2SYehuda Sadeh goto bad; 38883d14c5d2SYehuda Sadeh } 38893d14c5d2SYehuda Sadeh p += maplen; 38903d14c5d2SYehuda Sadeh nr_maps--; 38913d14c5d2SYehuda Sadeh } 38923d14c5d2SYehuda Sadeh 38933d14c5d2SYehuda Sadeh done: 3894cd634fb6SSage Weil /* 3895cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 3896cd634fb6SSage Weil * we find out when we are no longer full and stop returning 3897cd634fb6SSage Weil * ENOSPC. 3898cd634fb6SSage Weil */ 3899b7ec35b3SIlya Dryomov pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3900b7ec35b3SIlya Dryomov pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3901b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 390242c1b124SIlya Dryomov have_pool_full(osdc); 390358eb7932SJeff Layton if (was_pauserd || was_pausewr || pauserd || pausewr || 390458eb7932SJeff Layton osdc->osdmap->epoch < osdc->epoch_barrier) 390542c1b124SIlya Dryomov maybe_request_map(osdc); 3906cd634fb6SSage Weil 39075aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 390842c1b124SIlya Dryomov 3909fc36d0a4SJeff Layton ceph_osdc_abort_on_full(osdc); 391042c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 391142c1b124SIlya Dryomov osdc->osdmap->epoch); 39125aea3dcdSIlya Dryomov up_write(&osdc->lock); 39133d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 39143d14c5d2SYehuda Sadeh return; 39153d14c5d2SYehuda Sadeh 39163d14c5d2SYehuda Sadeh bad: 39173d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 39183d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 39195aea3dcdSIlya Dryomov up_write(&osdc->lock); 39205aea3dcdSIlya Dryomov } 39215aea3dcdSIlya Dryomov 39225aea3dcdSIlya Dryomov /* 39235aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 39245aea3dcdSIlya Dryomov */ 39255aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 39265aea3dcdSIlya Dryomov { 39275aea3dcdSIlya Dryomov struct rb_node *n; 39285aea3dcdSIlya Dryomov 3929a02a946dSIlya Dryomov clear_backoffs(osd); 3930a02a946dSIlya Dryomov 3931922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 39325aea3dcdSIlya Dryomov struct ceph_osd_request *req = 39335aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 39345aea3dcdSIlya Dryomov 3935922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 3936922dab61SIlya Dryomov 39375aea3dcdSIlya Dryomov if (!req->r_linger) { 39385aea3dcdSIlya Dryomov if (!req->r_t.paused) 39395aea3dcdSIlya Dryomov send_request(req); 3940922dab61SIlya Dryomov } else { 3941922dab61SIlya Dryomov cancel_linger_request(req); 39425aea3dcdSIlya Dryomov } 39435aea3dcdSIlya Dryomov } 3944922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 3945922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3946922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3947922dab61SIlya Dryomov 3948922dab61SIlya Dryomov send_linger(lreq); 3949922dab61SIlya Dryomov } 39505aea3dcdSIlya Dryomov } 39515aea3dcdSIlya Dryomov 39525aea3dcdSIlya Dryomov /* 39535aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 39545aea3dcdSIlya Dryomov */ 39555aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 39565aea3dcdSIlya Dryomov { 39575aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 39585aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 39595aea3dcdSIlya Dryomov 39605aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 39615aea3dcdSIlya Dryomov 39625aea3dcdSIlya Dryomov down_write(&osdc->lock); 39635aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 39645aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 39655aea3dcdSIlya Dryomov goto out_unlock; 39665aea3dcdSIlya Dryomov } 39675aea3dcdSIlya Dryomov 39685aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 39695aea3dcdSIlya Dryomov kick_osd_requests(osd); 39705aea3dcdSIlya Dryomov maybe_request_map(osdc); 39715aea3dcdSIlya Dryomov 39725aea3dcdSIlya Dryomov out_unlock: 39735aea3dcdSIlya Dryomov up_write(&osdc->lock); 39743d14c5d2SYehuda Sadeh } 39753d14c5d2SYehuda Sadeh 3976a02a946dSIlya Dryomov struct MOSDBackoff { 3977a02a946dSIlya Dryomov struct ceph_spg spgid; 3978a02a946dSIlya Dryomov u32 map_epoch; 3979a02a946dSIlya Dryomov u8 op; 3980a02a946dSIlya Dryomov u64 id; 3981a02a946dSIlya Dryomov struct ceph_hobject_id *begin; 3982a02a946dSIlya Dryomov struct ceph_hobject_id *end; 3983a02a946dSIlya Dryomov }; 3984a02a946dSIlya Dryomov 3985a02a946dSIlya Dryomov static int decode_MOSDBackoff(const struct ceph_msg *msg, struct MOSDBackoff *m) 3986a02a946dSIlya Dryomov { 3987a02a946dSIlya Dryomov void *p = msg->front.iov_base; 3988a02a946dSIlya Dryomov void *const end = p + msg->front.iov_len; 3989a02a946dSIlya Dryomov u8 struct_v; 3990a02a946dSIlya Dryomov u32 struct_len; 3991a02a946dSIlya Dryomov int ret; 3992a02a946dSIlya Dryomov 3993a02a946dSIlya Dryomov ret = ceph_start_decoding(&p, end, 1, "spg_t", &struct_v, &struct_len); 3994a02a946dSIlya Dryomov if (ret) 3995a02a946dSIlya Dryomov return ret; 3996a02a946dSIlya Dryomov 3997a02a946dSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->spgid.pgid); 3998a02a946dSIlya Dryomov if (ret) 3999a02a946dSIlya Dryomov return ret; 4000a02a946dSIlya Dryomov 4001a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->spgid.shard, e_inval); 4002a02a946dSIlya Dryomov ceph_decode_32_safe(&p, end, m->map_epoch, e_inval); 4003a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->op, e_inval); 4004a02a946dSIlya Dryomov ceph_decode_64_safe(&p, end, m->id, e_inval); 4005a02a946dSIlya Dryomov 4006a02a946dSIlya Dryomov m->begin = kzalloc(sizeof(*m->begin), GFP_NOIO); 4007a02a946dSIlya Dryomov if (!m->begin) 4008a02a946dSIlya Dryomov return -ENOMEM; 4009a02a946dSIlya Dryomov 4010a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->begin); 4011a02a946dSIlya Dryomov if (ret) { 4012a02a946dSIlya Dryomov free_hoid(m->begin); 4013a02a946dSIlya Dryomov return ret; 4014a02a946dSIlya Dryomov } 4015a02a946dSIlya Dryomov 4016a02a946dSIlya Dryomov m->end = kzalloc(sizeof(*m->end), GFP_NOIO); 4017a02a946dSIlya Dryomov if (!m->end) { 4018a02a946dSIlya Dryomov free_hoid(m->begin); 4019a02a946dSIlya Dryomov return -ENOMEM; 4020a02a946dSIlya Dryomov } 4021a02a946dSIlya Dryomov 4022a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->end); 4023a02a946dSIlya Dryomov if (ret) { 4024a02a946dSIlya Dryomov free_hoid(m->begin); 4025a02a946dSIlya Dryomov free_hoid(m->end); 4026a02a946dSIlya Dryomov return ret; 4027a02a946dSIlya Dryomov } 4028a02a946dSIlya Dryomov 4029a02a946dSIlya Dryomov return 0; 4030a02a946dSIlya Dryomov 4031a02a946dSIlya Dryomov e_inval: 4032a02a946dSIlya Dryomov return -EINVAL; 4033a02a946dSIlya Dryomov } 4034a02a946dSIlya Dryomov 4035a02a946dSIlya Dryomov static struct ceph_msg *create_backoff_message( 4036a02a946dSIlya Dryomov const struct ceph_osd_backoff *backoff, 4037a02a946dSIlya Dryomov u32 map_epoch) 4038a02a946dSIlya Dryomov { 4039a02a946dSIlya Dryomov struct ceph_msg *msg; 4040a02a946dSIlya Dryomov void *p, *end; 4041a02a946dSIlya Dryomov int msg_size; 4042a02a946dSIlya Dryomov 4043a02a946dSIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 4044a02a946dSIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 4045a02a946dSIlya Dryomov msg_size += 4 + 1 + 8; /* map_epoch, op, id */ 4046a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4047a02a946dSIlya Dryomov hoid_encoding_size(backoff->begin); 4048a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4049a02a946dSIlya Dryomov hoid_encoding_size(backoff->end); 4050a02a946dSIlya Dryomov 4051a02a946dSIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_BACKOFF, msg_size, GFP_NOIO, true); 4052a02a946dSIlya Dryomov if (!msg) 4053a02a946dSIlya Dryomov return NULL; 4054a02a946dSIlya Dryomov 4055a02a946dSIlya Dryomov p = msg->front.iov_base; 4056a02a946dSIlya Dryomov end = p + msg->front_alloc_len; 4057a02a946dSIlya Dryomov 4058a02a946dSIlya Dryomov encode_spgid(&p, &backoff->spgid); 4059a02a946dSIlya Dryomov ceph_encode_32(&p, map_epoch); 4060a02a946dSIlya Dryomov ceph_encode_8(&p, CEPH_OSD_BACKOFF_OP_ACK_BLOCK); 4061a02a946dSIlya Dryomov ceph_encode_64(&p, backoff->id); 4062a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->begin); 4063a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->end); 4064a02a946dSIlya Dryomov BUG_ON(p != end); 4065a02a946dSIlya Dryomov 4066a02a946dSIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 4067a02a946dSIlya Dryomov msg->hdr.version = cpu_to_le16(1); /* MOSDBackoff v1 */ 4068a02a946dSIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 4069a02a946dSIlya Dryomov 4070a02a946dSIlya Dryomov return msg; 4071a02a946dSIlya Dryomov } 4072a02a946dSIlya Dryomov 4073a02a946dSIlya Dryomov static void handle_backoff_block(struct ceph_osd *osd, struct MOSDBackoff *m) 4074a02a946dSIlya Dryomov { 4075a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4076a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4077a02a946dSIlya Dryomov struct ceph_msg *msg; 4078a02a946dSIlya Dryomov 4079a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4080a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4081a02a946dSIlya Dryomov 4082a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &m->spgid); 4083a02a946dSIlya Dryomov if (!spg) { 4084a02a946dSIlya Dryomov spg = alloc_spg_mapping(); 4085a02a946dSIlya Dryomov if (!spg) { 4086a02a946dSIlya Dryomov pr_err("%s failed to allocate spg\n", __func__); 4087a02a946dSIlya Dryomov return; 4088a02a946dSIlya Dryomov } 4089a02a946dSIlya Dryomov spg->spgid = m->spgid; /* struct */ 4090a02a946dSIlya Dryomov insert_spg_mapping(&osd->o_backoff_mappings, spg); 4091a02a946dSIlya Dryomov } 4092a02a946dSIlya Dryomov 4093a02a946dSIlya Dryomov backoff = alloc_backoff(); 4094a02a946dSIlya Dryomov if (!backoff) { 4095a02a946dSIlya Dryomov pr_err("%s failed to allocate backoff\n", __func__); 4096a02a946dSIlya Dryomov return; 4097a02a946dSIlya Dryomov } 4098a02a946dSIlya Dryomov backoff->spgid = m->spgid; /* struct */ 4099a02a946dSIlya Dryomov backoff->id = m->id; 4100a02a946dSIlya Dryomov backoff->begin = m->begin; 4101a02a946dSIlya Dryomov m->begin = NULL; /* backoff now owns this */ 4102a02a946dSIlya Dryomov backoff->end = m->end; 4103a02a946dSIlya Dryomov m->end = NULL; /* ditto */ 4104a02a946dSIlya Dryomov 4105a02a946dSIlya Dryomov insert_backoff(&spg->backoffs, backoff); 4106a02a946dSIlya Dryomov insert_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4107a02a946dSIlya Dryomov 4108a02a946dSIlya Dryomov /* 4109a02a946dSIlya Dryomov * Ack with original backoff's epoch so that the OSD can 4110a02a946dSIlya Dryomov * discard this if there was a PG split. 4111a02a946dSIlya Dryomov */ 4112a02a946dSIlya Dryomov msg = create_backoff_message(backoff, m->map_epoch); 4113a02a946dSIlya Dryomov if (!msg) { 4114a02a946dSIlya Dryomov pr_err("%s failed to allocate msg\n", __func__); 4115a02a946dSIlya Dryomov return; 4116a02a946dSIlya Dryomov } 4117a02a946dSIlya Dryomov ceph_con_send(&osd->o_con, msg); 4118a02a946dSIlya Dryomov } 4119a02a946dSIlya Dryomov 4120a02a946dSIlya Dryomov static bool target_contained_by(const struct ceph_osd_request_target *t, 4121a02a946dSIlya Dryomov const struct ceph_hobject_id *begin, 4122a02a946dSIlya Dryomov const struct ceph_hobject_id *end) 4123a02a946dSIlya Dryomov { 4124a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 4125a02a946dSIlya Dryomov int cmp; 4126a02a946dSIlya Dryomov 4127a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, t); 4128a02a946dSIlya Dryomov cmp = hoid_compare(&hoid, begin); 4129a02a946dSIlya Dryomov return !cmp || (cmp > 0 && hoid_compare(&hoid, end) < 0); 4130a02a946dSIlya Dryomov } 4131a02a946dSIlya Dryomov 4132a02a946dSIlya Dryomov static void handle_backoff_unblock(struct ceph_osd *osd, 4133a02a946dSIlya Dryomov const struct MOSDBackoff *m) 4134a02a946dSIlya Dryomov { 4135a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4136a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4137a02a946dSIlya Dryomov struct rb_node *n; 4138a02a946dSIlya Dryomov 4139a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4140a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4141a02a946dSIlya Dryomov 4142a02a946dSIlya Dryomov backoff = lookup_backoff_by_id(&osd->o_backoffs_by_id, m->id); 4143a02a946dSIlya Dryomov if (!backoff) { 4144a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu backoff dne\n", 4145a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4146a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4147a02a946dSIlya Dryomov return; 4148a02a946dSIlya Dryomov } 4149a02a946dSIlya Dryomov 4150a02a946dSIlya Dryomov if (hoid_compare(backoff->begin, m->begin) && 4151a02a946dSIlya Dryomov hoid_compare(backoff->end, m->end)) { 4152a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu bad range?\n", 4153a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4154a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4155a02a946dSIlya Dryomov /* unblock it anyway... */ 4156a02a946dSIlya Dryomov } 4157a02a946dSIlya Dryomov 4158a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &backoff->spgid); 4159a02a946dSIlya Dryomov BUG_ON(!spg); 4160a02a946dSIlya Dryomov 4161a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 4162a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4163a02a946dSIlya Dryomov free_backoff(backoff); 4164a02a946dSIlya Dryomov 4165a02a946dSIlya Dryomov if (RB_EMPTY_ROOT(&spg->backoffs)) { 4166a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 4167a02a946dSIlya Dryomov free_spg_mapping(spg); 4168a02a946dSIlya Dryomov } 4169a02a946dSIlya Dryomov 4170a02a946dSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 4171a02a946dSIlya Dryomov struct ceph_osd_request *req = 4172a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 4173a02a946dSIlya Dryomov 4174a02a946dSIlya Dryomov if (!ceph_spg_compare(&req->r_t.spgid, &m->spgid)) { 4175a02a946dSIlya Dryomov /* 4176a02a946dSIlya Dryomov * Match against @m, not @backoff -- the PG may 4177a02a946dSIlya Dryomov * have split on the OSD. 4178a02a946dSIlya Dryomov */ 4179a02a946dSIlya Dryomov if (target_contained_by(&req->r_t, m->begin, m->end)) { 4180a02a946dSIlya Dryomov /* 4181a02a946dSIlya Dryomov * If no other installed backoff applies, 4182a02a946dSIlya Dryomov * resend. 4183a02a946dSIlya Dryomov */ 4184a02a946dSIlya Dryomov send_request(req); 4185a02a946dSIlya Dryomov } 4186a02a946dSIlya Dryomov } 4187a02a946dSIlya Dryomov } 4188a02a946dSIlya Dryomov } 4189a02a946dSIlya Dryomov 4190a02a946dSIlya Dryomov static void handle_backoff(struct ceph_osd *osd, struct ceph_msg *msg) 4191a02a946dSIlya Dryomov { 4192a02a946dSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 4193a02a946dSIlya Dryomov struct MOSDBackoff m; 4194a02a946dSIlya Dryomov int ret; 4195a02a946dSIlya Dryomov 4196a02a946dSIlya Dryomov down_read(&osdc->lock); 4197a02a946dSIlya Dryomov if (!osd_registered(osd)) { 4198a02a946dSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 4199a02a946dSIlya Dryomov up_read(&osdc->lock); 4200a02a946dSIlya Dryomov return; 4201a02a946dSIlya Dryomov } 4202a02a946dSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 4203a02a946dSIlya Dryomov 4204a02a946dSIlya Dryomov mutex_lock(&osd->lock); 4205a02a946dSIlya Dryomov ret = decode_MOSDBackoff(msg, &m); 4206a02a946dSIlya Dryomov if (ret) { 4207a02a946dSIlya Dryomov pr_err("failed to decode MOSDBackoff: %d\n", ret); 4208a02a946dSIlya Dryomov ceph_msg_dump(msg); 4209a02a946dSIlya Dryomov goto out_unlock; 4210a02a946dSIlya Dryomov } 4211a02a946dSIlya Dryomov 4212a02a946dSIlya Dryomov switch (m.op) { 4213a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_BLOCK: 4214a02a946dSIlya Dryomov handle_backoff_block(osd, &m); 4215a02a946dSIlya Dryomov break; 4216a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_UNBLOCK: 4217a02a946dSIlya Dryomov handle_backoff_unblock(osd, &m); 4218a02a946dSIlya Dryomov break; 4219a02a946dSIlya Dryomov default: 4220a02a946dSIlya Dryomov pr_err("%s osd%d unknown op %d\n", __func__, osd->o_osd, m.op); 4221a02a946dSIlya Dryomov } 4222a02a946dSIlya Dryomov 4223a02a946dSIlya Dryomov free_hoid(m.begin); 4224a02a946dSIlya Dryomov free_hoid(m.end); 4225a02a946dSIlya Dryomov 4226a02a946dSIlya Dryomov out_unlock: 4227a02a946dSIlya Dryomov mutex_unlock(&osd->lock); 4228a02a946dSIlya Dryomov up_read(&osdc->lock); 4229a02a946dSIlya Dryomov } 4230a02a946dSIlya Dryomov 42313d14c5d2SYehuda Sadeh /* 4232a40c4f10SYehuda Sadeh * Process osd watch notifications 4233a40c4f10SYehuda Sadeh */ 42343c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 42353c663bbdSAlex Elder struct ceph_msg *msg) 4236a40c4f10SYehuda Sadeh { 4237922dab61SIlya Dryomov void *p = msg->front.iov_base; 4238922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 4239922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4240922dab61SIlya Dryomov struct linger_work *lwork; 4241922dab61SIlya Dryomov u8 proto_ver, opcode; 4242922dab61SIlya Dryomov u64 cookie, notify_id; 4243922dab61SIlya Dryomov u64 notifier_id = 0; 424419079203SIlya Dryomov s32 return_code = 0; 4245922dab61SIlya Dryomov void *payload = NULL; 4246922dab61SIlya Dryomov u32 payload_len = 0; 4247a40c4f10SYehuda Sadeh 4248a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 4249a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 4250a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 4251922dab61SIlya Dryomov p += 8; /* skip ver */ 4252a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 4253a40c4f10SYehuda Sadeh 4254922dab61SIlya Dryomov if (proto_ver >= 1) { 4255922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 4256922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 4257922dab61SIlya Dryomov payload = p; 4258922dab61SIlya Dryomov p += payload_len; 4259a40c4f10SYehuda Sadeh } 4260a40c4f10SYehuda Sadeh 4261922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 426219079203SIlya Dryomov ceph_decode_32_safe(&p, end, return_code, bad); 4263922dab61SIlya Dryomov 4264922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 4265922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 4266922dab61SIlya Dryomov 4267922dab61SIlya Dryomov down_read(&osdc->lock); 4268922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 4269922dab61SIlya Dryomov if (!lreq) { 4270922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 4271922dab61SIlya Dryomov cookie); 4272922dab61SIlya Dryomov goto out_unlock_osdc; 4273922dab61SIlya Dryomov } 4274922dab61SIlya Dryomov 4275922dab61SIlya Dryomov mutex_lock(&lreq->lock); 427619079203SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, 427719079203SIlya Dryomov opcode, cookie, lreq, lreq->is_watch); 4278922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 4279922dab61SIlya Dryomov if (!lreq->last_error) { 4280922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 4281922dab61SIlya Dryomov queue_watch_error(lreq); 4282922dab61SIlya Dryomov } 428319079203SIlya Dryomov } else if (!lreq->is_watch) { 428419079203SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ 428519079203SIlya Dryomov if (lreq->notify_id && lreq->notify_id != notify_id) { 428619079203SIlya Dryomov dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, 428719079203SIlya Dryomov lreq->notify_id, notify_id); 428819079203SIlya Dryomov } else if (!completion_done(&lreq->notify_finish_wait)) { 428919079203SIlya Dryomov struct ceph_msg_data *data = 429019079203SIlya Dryomov list_first_entry_or_null(&msg->data, 429119079203SIlya Dryomov struct ceph_msg_data, 429219079203SIlya Dryomov links); 429319079203SIlya Dryomov 429419079203SIlya Dryomov if (data) { 429519079203SIlya Dryomov if (lreq->preply_pages) { 429619079203SIlya Dryomov WARN_ON(data->type != 429719079203SIlya Dryomov CEPH_MSG_DATA_PAGES); 429819079203SIlya Dryomov *lreq->preply_pages = data->pages; 429919079203SIlya Dryomov *lreq->preply_len = data->length; 430019079203SIlya Dryomov } else { 430119079203SIlya Dryomov ceph_release_page_vector(data->pages, 430219079203SIlya Dryomov calc_pages_for(0, data->length)); 430319079203SIlya Dryomov } 430419079203SIlya Dryomov } 430519079203SIlya Dryomov lreq->notify_finish_error = return_code; 430619079203SIlya Dryomov complete_all(&lreq->notify_finish_wait); 430719079203SIlya Dryomov } 4308922dab61SIlya Dryomov } else { 4309922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 4310922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 4311922dab61SIlya Dryomov if (!lwork) { 4312922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 4313922dab61SIlya Dryomov goto out_unlock_lreq; 4314922dab61SIlya Dryomov } 4315922dab61SIlya Dryomov 4316922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 4317922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 4318922dab61SIlya Dryomov lwork->notify.payload = payload; 4319922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 4320922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 4321922dab61SIlya Dryomov lwork_queue(lwork); 4322922dab61SIlya Dryomov } 4323922dab61SIlya Dryomov 4324922dab61SIlya Dryomov out_unlock_lreq: 4325922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 4326922dab61SIlya Dryomov out_unlock_osdc: 4327922dab61SIlya Dryomov up_read(&osdc->lock); 4328a40c4f10SYehuda Sadeh return; 4329a40c4f10SYehuda Sadeh 4330a40c4f10SYehuda Sadeh bad: 4331a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 4332a40c4f10SYehuda Sadeh } 4333a40c4f10SYehuda Sadeh 4334a40c4f10SYehuda Sadeh /* 43353d14c5d2SYehuda Sadeh * Register request, send initial attempt. 43363d14c5d2SYehuda Sadeh */ 43373d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 43383d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 43393d14c5d2SYehuda Sadeh bool nofail) 43403d14c5d2SYehuda Sadeh { 43415aea3dcdSIlya Dryomov down_read(&osdc->lock); 43425aea3dcdSIlya Dryomov submit_request(req, false); 43435aea3dcdSIlya Dryomov up_read(&osdc->lock); 43443d14c5d2SYehuda Sadeh 43455aea3dcdSIlya Dryomov return 0; 43463d14c5d2SYehuda Sadeh } 43473d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 43483d14c5d2SYehuda Sadeh 43493d14c5d2SYehuda Sadeh /* 4350c297eb42SIlya Dryomov * Unregister a registered request. The request is not completed: 4351c297eb42SIlya Dryomov * ->r_result isn't set and __complete_request() isn't called. 4352c9f9b93dSIlya Dryomov */ 4353c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 4354c9f9b93dSIlya Dryomov { 4355c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 4356c9f9b93dSIlya Dryomov 43575aea3dcdSIlya Dryomov down_write(&osdc->lock); 43585aea3dcdSIlya Dryomov if (req->r_osd) 43595aea3dcdSIlya Dryomov cancel_request(req); 43605aea3dcdSIlya Dryomov up_write(&osdc->lock); 4361c9f9b93dSIlya Dryomov } 4362c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 4363c9f9b93dSIlya Dryomov 4364c9f9b93dSIlya Dryomov /* 436542b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 436642b06965SIlya Dryomov */ 436742b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 436842b06965SIlya Dryomov unsigned long timeout) 436942b06965SIlya Dryomov { 437042b06965SIlya Dryomov long left; 437142b06965SIlya Dryomov 437242b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 43730e76abf2SYan, Zheng left = wait_for_completion_killable_timeout(&req->r_completion, 437442b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 437542b06965SIlya Dryomov if (left <= 0) { 437642b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 437742b06965SIlya Dryomov ceph_osdc_cancel_request(req); 437842b06965SIlya Dryomov } else { 437942b06965SIlya Dryomov left = req->r_result; /* completed */ 438042b06965SIlya Dryomov } 438142b06965SIlya Dryomov 438242b06965SIlya Dryomov return left; 438342b06965SIlya Dryomov } 438442b06965SIlya Dryomov 438542b06965SIlya Dryomov /* 43863d14c5d2SYehuda Sadeh * wait for a request to complete 43873d14c5d2SYehuda Sadeh */ 43883d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 43893d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 43903d14c5d2SYehuda Sadeh { 439142b06965SIlya Dryomov return wait_request_timeout(req, 0); 43923d14c5d2SYehuda Sadeh } 43933d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 43943d14c5d2SYehuda Sadeh 43953d14c5d2SYehuda Sadeh /* 43963d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 43973d14c5d2SYehuda Sadeh */ 43983d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 43993d14c5d2SYehuda Sadeh { 44005aea3dcdSIlya Dryomov struct rb_node *n, *p; 44015aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 44023d14c5d2SYehuda Sadeh 44035aea3dcdSIlya Dryomov again: 44045aea3dcdSIlya Dryomov down_read(&osdc->lock); 44055aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 44065aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 44075aea3dcdSIlya Dryomov 44085aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 44095aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 44105aea3dcdSIlya Dryomov struct ceph_osd_request *req = 44115aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 44125aea3dcdSIlya Dryomov 44133d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 44143d14c5d2SYehuda Sadeh break; 44153d14c5d2SYehuda Sadeh 44165aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 44173d14c5d2SYehuda Sadeh continue; 44183d14c5d2SYehuda Sadeh 44193d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 44205aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 44215aea3dcdSIlya Dryomov up_read(&osdc->lock); 44225aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 44235aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 4424b18b9550SIlya Dryomov wait_for_completion(&req->r_completion); 44253d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 44265aea3dcdSIlya Dryomov goto again; 44273d14c5d2SYehuda Sadeh } 44285aea3dcdSIlya Dryomov 44295aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 44305aea3dcdSIlya Dryomov } 44315aea3dcdSIlya Dryomov 44325aea3dcdSIlya Dryomov up_read(&osdc->lock); 44335aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 44343d14c5d2SYehuda Sadeh } 44353d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 44363d14c5d2SYehuda Sadeh 4437922dab61SIlya Dryomov static struct ceph_osd_request * 4438922dab61SIlya Dryomov alloc_linger_request(struct ceph_osd_linger_request *lreq) 4439922dab61SIlya Dryomov { 4440922dab61SIlya Dryomov struct ceph_osd_request *req; 4441922dab61SIlya Dryomov 4442922dab61SIlya Dryomov req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); 4443922dab61SIlya Dryomov if (!req) 4444922dab61SIlya Dryomov return NULL; 4445922dab61SIlya Dryomov 4446922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4447922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 4448922dab61SIlya Dryomov 4449922dab61SIlya Dryomov if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { 4450922dab61SIlya Dryomov ceph_osdc_put_request(req); 4451922dab61SIlya Dryomov return NULL; 4452922dab61SIlya Dryomov } 4453922dab61SIlya Dryomov 4454922dab61SIlya Dryomov return req; 4455922dab61SIlya Dryomov } 4456922dab61SIlya Dryomov 4457922dab61SIlya Dryomov /* 4458922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 4459922dab61SIlya Dryomov */ 4460922dab61SIlya Dryomov struct ceph_osd_linger_request * 4461922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 4462922dab61SIlya Dryomov struct ceph_object_id *oid, 4463922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4464922dab61SIlya Dryomov rados_watchcb2_t wcb, 4465922dab61SIlya Dryomov rados_watcherrcb_t errcb, 4466922dab61SIlya Dryomov void *data) 4467922dab61SIlya Dryomov { 4468922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4469922dab61SIlya Dryomov int ret; 4470922dab61SIlya Dryomov 4471922dab61SIlya Dryomov lreq = linger_alloc(osdc); 4472922dab61SIlya Dryomov if (!lreq) 4473922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 4474922dab61SIlya Dryomov 447519079203SIlya Dryomov lreq->is_watch = true; 4476922dab61SIlya Dryomov lreq->wcb = wcb; 4477922dab61SIlya Dryomov lreq->errcb = errcb; 4478922dab61SIlya Dryomov lreq->data = data; 4479b07d3c4bSIlya Dryomov lreq->watch_valid_thru = jiffies; 4480922dab61SIlya Dryomov 4481922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 4482922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 448354ea0046SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE; 44841134e091SDeepa Dinamani ktime_get_real_ts(&lreq->mtime); 4485922dab61SIlya Dryomov 4486922dab61SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 4487922dab61SIlya Dryomov if (!lreq->reg_req) { 4488922dab61SIlya Dryomov ret = -ENOMEM; 4489922dab61SIlya Dryomov goto err_put_lreq; 4490922dab61SIlya Dryomov } 4491922dab61SIlya Dryomov 4492922dab61SIlya Dryomov lreq->ping_req = alloc_linger_request(lreq); 4493922dab61SIlya Dryomov if (!lreq->ping_req) { 4494922dab61SIlya Dryomov ret = -ENOMEM; 4495922dab61SIlya Dryomov goto err_put_lreq; 4496922dab61SIlya Dryomov } 4497922dab61SIlya Dryomov 4498922dab61SIlya Dryomov down_write(&osdc->lock); 4499922dab61SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 4500922dab61SIlya Dryomov osd_req_op_watch_init(lreq->reg_req, 0, lreq->linger_id, 4501922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_WATCH); 4502922dab61SIlya Dryomov osd_req_op_watch_init(lreq->ping_req, 0, lreq->linger_id, 4503922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_PING); 4504922dab61SIlya Dryomov linger_submit(lreq); 4505922dab61SIlya Dryomov up_write(&osdc->lock); 4506922dab61SIlya Dryomov 4507922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 4508922dab61SIlya Dryomov if (ret) { 4509922dab61SIlya Dryomov linger_cancel(lreq); 4510922dab61SIlya Dryomov goto err_put_lreq; 4511922dab61SIlya Dryomov } 4512922dab61SIlya Dryomov 4513922dab61SIlya Dryomov return lreq; 4514922dab61SIlya Dryomov 4515922dab61SIlya Dryomov err_put_lreq: 4516922dab61SIlya Dryomov linger_put(lreq); 4517922dab61SIlya Dryomov return ERR_PTR(ret); 4518922dab61SIlya Dryomov } 4519922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 4520922dab61SIlya Dryomov 4521922dab61SIlya Dryomov /* 4522922dab61SIlya Dryomov * Releases a ref. 4523922dab61SIlya Dryomov * 4524922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 4525922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 4526922dab61SIlya Dryomov * with mount_timeout"). 4527922dab61SIlya Dryomov */ 4528922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 4529922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 4530922dab61SIlya Dryomov { 4531922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 4532922dab61SIlya Dryomov struct ceph_osd_request *req; 4533922dab61SIlya Dryomov int ret; 4534922dab61SIlya Dryomov 4535922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4536922dab61SIlya Dryomov if (!req) 4537922dab61SIlya Dryomov return -ENOMEM; 4538922dab61SIlya Dryomov 4539922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4540922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 454154ea0046SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE; 45421134e091SDeepa Dinamani ktime_get_real_ts(&req->r_mtime); 4543922dab61SIlya Dryomov osd_req_op_watch_init(req, 0, lreq->linger_id, 4544922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_UNWATCH); 4545922dab61SIlya Dryomov 4546922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4547922dab61SIlya Dryomov if (ret) 4548922dab61SIlya Dryomov goto out_put_req; 4549922dab61SIlya Dryomov 4550922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 4551922dab61SIlya Dryomov linger_cancel(lreq); 4552922dab61SIlya Dryomov linger_put(lreq); 4553922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 4554922dab61SIlya Dryomov 4555922dab61SIlya Dryomov out_put_req: 4556922dab61SIlya Dryomov ceph_osdc_put_request(req); 4557922dab61SIlya Dryomov return ret; 4558922dab61SIlya Dryomov } 4559922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 4560922dab61SIlya Dryomov 4561922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 4562922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 4563922dab61SIlya Dryomov size_t payload_len) 4564922dab61SIlya Dryomov { 4565922dab61SIlya Dryomov struct ceph_osd_req_op *op; 4566922dab61SIlya Dryomov struct ceph_pagelist *pl; 4567922dab61SIlya Dryomov int ret; 4568922dab61SIlya Dryomov 4569922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 4570922dab61SIlya Dryomov 4571922dab61SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 4572922dab61SIlya Dryomov if (!pl) 4573922dab61SIlya Dryomov return -ENOMEM; 4574922dab61SIlya Dryomov 4575922dab61SIlya Dryomov ceph_pagelist_init(pl); 4576922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 4577922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 4578922dab61SIlya Dryomov if (payload) { 4579922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 4580922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 4581922dab61SIlya Dryomov } else { 4582922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 4583922dab61SIlya Dryomov } 4584922dab61SIlya Dryomov if (ret) { 4585922dab61SIlya Dryomov ceph_pagelist_release(pl); 4586922dab61SIlya Dryomov return -ENOMEM; 4587922dab61SIlya Dryomov } 4588922dab61SIlya Dryomov 4589922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 4590922dab61SIlya Dryomov op->indata_len = pl->length; 4591922dab61SIlya Dryomov return 0; 4592922dab61SIlya Dryomov } 4593922dab61SIlya Dryomov 4594922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 4595922dab61SIlya Dryomov struct ceph_object_id *oid, 4596922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4597922dab61SIlya Dryomov u64 notify_id, 4598922dab61SIlya Dryomov u64 cookie, 4599922dab61SIlya Dryomov void *payload, 4600922dab61SIlya Dryomov size_t payload_len) 4601922dab61SIlya Dryomov { 4602922dab61SIlya Dryomov struct ceph_osd_request *req; 4603922dab61SIlya Dryomov int ret; 4604922dab61SIlya Dryomov 4605922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4606922dab61SIlya Dryomov if (!req) 4607922dab61SIlya Dryomov return -ENOMEM; 4608922dab61SIlya Dryomov 4609922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 4610922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 4611922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 4612922dab61SIlya Dryomov 4613922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4614922dab61SIlya Dryomov if (ret) 4615922dab61SIlya Dryomov goto out_put_req; 4616922dab61SIlya Dryomov 4617922dab61SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 4618922dab61SIlya Dryomov payload_len); 4619922dab61SIlya Dryomov if (ret) 4620922dab61SIlya Dryomov goto out_put_req; 4621922dab61SIlya Dryomov 4622922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 4623922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 4624922dab61SIlya Dryomov 4625922dab61SIlya Dryomov out_put_req: 4626922dab61SIlya Dryomov ceph_osdc_put_request(req); 4627922dab61SIlya Dryomov return ret; 4628922dab61SIlya Dryomov } 4629922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 4630922dab61SIlya Dryomov 463119079203SIlya Dryomov static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, 463219079203SIlya Dryomov u64 cookie, u32 prot_ver, u32 timeout, 463319079203SIlya Dryomov void *payload, size_t payload_len) 463419079203SIlya Dryomov { 463519079203SIlya Dryomov struct ceph_osd_req_op *op; 463619079203SIlya Dryomov struct ceph_pagelist *pl; 463719079203SIlya Dryomov int ret; 463819079203SIlya Dryomov 463919079203SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); 464019079203SIlya Dryomov op->notify.cookie = cookie; 464119079203SIlya Dryomov 464219079203SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 464319079203SIlya Dryomov if (!pl) 464419079203SIlya Dryomov return -ENOMEM; 464519079203SIlya Dryomov 464619079203SIlya Dryomov ceph_pagelist_init(pl); 464719079203SIlya Dryomov ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ 464819079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, timeout); 464919079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 465019079203SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 465119079203SIlya Dryomov if (ret) { 465219079203SIlya Dryomov ceph_pagelist_release(pl); 465319079203SIlya Dryomov return -ENOMEM; 465419079203SIlya Dryomov } 465519079203SIlya Dryomov 465619079203SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify.request_data, pl); 465719079203SIlya Dryomov op->indata_len = pl->length; 465819079203SIlya Dryomov return 0; 465919079203SIlya Dryomov } 466019079203SIlya Dryomov 466119079203SIlya Dryomov /* 466219079203SIlya Dryomov * @timeout: in seconds 466319079203SIlya Dryomov * 466419079203SIlya Dryomov * @preply_{pages,len} are initialized both on success and error. 466519079203SIlya Dryomov * The caller is responsible for: 466619079203SIlya Dryomov * 466719079203SIlya Dryomov * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) 466819079203SIlya Dryomov */ 466919079203SIlya Dryomov int ceph_osdc_notify(struct ceph_osd_client *osdc, 467019079203SIlya Dryomov struct ceph_object_id *oid, 467119079203SIlya Dryomov struct ceph_object_locator *oloc, 467219079203SIlya Dryomov void *payload, 467319079203SIlya Dryomov size_t payload_len, 467419079203SIlya Dryomov u32 timeout, 467519079203SIlya Dryomov struct page ***preply_pages, 467619079203SIlya Dryomov size_t *preply_len) 467719079203SIlya Dryomov { 467819079203SIlya Dryomov struct ceph_osd_linger_request *lreq; 467919079203SIlya Dryomov struct page **pages; 468019079203SIlya Dryomov int ret; 468119079203SIlya Dryomov 468219079203SIlya Dryomov WARN_ON(!timeout); 468319079203SIlya Dryomov if (preply_pages) { 468419079203SIlya Dryomov *preply_pages = NULL; 468519079203SIlya Dryomov *preply_len = 0; 468619079203SIlya Dryomov } 468719079203SIlya Dryomov 468819079203SIlya Dryomov lreq = linger_alloc(osdc); 468919079203SIlya Dryomov if (!lreq) 469019079203SIlya Dryomov return -ENOMEM; 469119079203SIlya Dryomov 469219079203SIlya Dryomov lreq->preply_pages = preply_pages; 469319079203SIlya Dryomov lreq->preply_len = preply_len; 469419079203SIlya Dryomov 469519079203SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 469619079203SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 469719079203SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_READ; 469819079203SIlya Dryomov 469919079203SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 470019079203SIlya Dryomov if (!lreq->reg_req) { 470119079203SIlya Dryomov ret = -ENOMEM; 470219079203SIlya Dryomov goto out_put_lreq; 470319079203SIlya Dryomov } 470419079203SIlya Dryomov 470519079203SIlya Dryomov /* for notify_id */ 470619079203SIlya Dryomov pages = ceph_alloc_page_vector(1, GFP_NOIO); 470719079203SIlya Dryomov if (IS_ERR(pages)) { 470819079203SIlya Dryomov ret = PTR_ERR(pages); 470919079203SIlya Dryomov goto out_put_lreq; 471019079203SIlya Dryomov } 471119079203SIlya Dryomov 471219079203SIlya Dryomov down_write(&osdc->lock); 471319079203SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 471419079203SIlya Dryomov ret = osd_req_op_notify_init(lreq->reg_req, 0, lreq->linger_id, 1, 471519079203SIlya Dryomov timeout, payload, payload_len); 471619079203SIlya Dryomov if (ret) { 471719079203SIlya Dryomov linger_unregister(lreq); 471819079203SIlya Dryomov up_write(&osdc->lock); 471919079203SIlya Dryomov ceph_release_page_vector(pages, 1); 472019079203SIlya Dryomov goto out_put_lreq; 472119079203SIlya Dryomov } 472219079203SIlya Dryomov ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, 472319079203SIlya Dryomov response_data), 472419079203SIlya Dryomov pages, PAGE_SIZE, 0, false, true); 472519079203SIlya Dryomov linger_submit(lreq); 472619079203SIlya Dryomov up_write(&osdc->lock); 472719079203SIlya Dryomov 472819079203SIlya Dryomov ret = linger_reg_commit_wait(lreq); 472919079203SIlya Dryomov if (!ret) 473019079203SIlya Dryomov ret = linger_notify_finish_wait(lreq); 473119079203SIlya Dryomov else 473219079203SIlya Dryomov dout("lreq %p failed to initiate notify %d\n", lreq, ret); 473319079203SIlya Dryomov 473419079203SIlya Dryomov linger_cancel(lreq); 473519079203SIlya Dryomov out_put_lreq: 473619079203SIlya Dryomov linger_put(lreq); 473719079203SIlya Dryomov return ret; 473819079203SIlya Dryomov } 473919079203SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify); 474019079203SIlya Dryomov 47413d14c5d2SYehuda Sadeh /* 4742b07d3c4bSIlya Dryomov * Return the number of milliseconds since the watch was last 4743b07d3c4bSIlya Dryomov * confirmed, or an error. If there is an error, the watch is no 4744b07d3c4bSIlya Dryomov * longer valid, and should be destroyed with ceph_osdc_unwatch(). 4745b07d3c4bSIlya Dryomov */ 4746b07d3c4bSIlya Dryomov int ceph_osdc_watch_check(struct ceph_osd_client *osdc, 4747b07d3c4bSIlya Dryomov struct ceph_osd_linger_request *lreq) 4748b07d3c4bSIlya Dryomov { 4749b07d3c4bSIlya Dryomov unsigned long stamp, age; 4750b07d3c4bSIlya Dryomov int ret; 4751b07d3c4bSIlya Dryomov 4752b07d3c4bSIlya Dryomov down_read(&osdc->lock); 4753b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 4754b07d3c4bSIlya Dryomov stamp = lreq->watch_valid_thru; 4755b07d3c4bSIlya Dryomov if (!list_empty(&lreq->pending_lworks)) { 4756b07d3c4bSIlya Dryomov struct linger_work *lwork = 4757b07d3c4bSIlya Dryomov list_first_entry(&lreq->pending_lworks, 4758b07d3c4bSIlya Dryomov struct linger_work, 4759b07d3c4bSIlya Dryomov pending_item); 4760b07d3c4bSIlya Dryomov 4761b07d3c4bSIlya Dryomov if (time_before(lwork->queued_stamp, stamp)) 4762b07d3c4bSIlya Dryomov stamp = lwork->queued_stamp; 4763b07d3c4bSIlya Dryomov } 4764b07d3c4bSIlya Dryomov age = jiffies - stamp; 4765b07d3c4bSIlya Dryomov dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, 4766b07d3c4bSIlya Dryomov lreq, lreq->linger_id, age, lreq->last_error); 4767b07d3c4bSIlya Dryomov /* we are truncating to msecs, so return a safe upper bound */ 4768b07d3c4bSIlya Dryomov ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); 4769b07d3c4bSIlya Dryomov 4770b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 4771b07d3c4bSIlya Dryomov up_read(&osdc->lock); 4772b07d3c4bSIlya Dryomov return ret; 4773b07d3c4bSIlya Dryomov } 4774b07d3c4bSIlya Dryomov 4775a4ed38d7SDouglas Fuller static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) 4776a4ed38d7SDouglas Fuller { 4777a4ed38d7SDouglas Fuller u8 struct_v; 4778a4ed38d7SDouglas Fuller u32 struct_len; 4779a4ed38d7SDouglas Fuller int ret; 4780a4ed38d7SDouglas Fuller 4781a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 2, "watch_item_t", 4782a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4783a4ed38d7SDouglas Fuller if (ret) 4784a4ed38d7SDouglas Fuller return ret; 4785a4ed38d7SDouglas Fuller 4786a4ed38d7SDouglas Fuller ceph_decode_copy(p, &item->name, sizeof(item->name)); 4787a4ed38d7SDouglas Fuller item->cookie = ceph_decode_64(p); 4788a4ed38d7SDouglas Fuller *p += 4; /* skip timeout_seconds */ 4789a4ed38d7SDouglas Fuller if (struct_v >= 2) { 4790a4ed38d7SDouglas Fuller ceph_decode_copy(p, &item->addr, sizeof(item->addr)); 4791a4ed38d7SDouglas Fuller ceph_decode_addr(&item->addr); 4792a4ed38d7SDouglas Fuller } 4793a4ed38d7SDouglas Fuller 4794a4ed38d7SDouglas Fuller dout("%s %s%llu cookie %llu addr %s\n", __func__, 4795a4ed38d7SDouglas Fuller ENTITY_NAME(item->name), item->cookie, 4796a4ed38d7SDouglas Fuller ceph_pr_addr(&item->addr.in_addr)); 4797a4ed38d7SDouglas Fuller return 0; 4798a4ed38d7SDouglas Fuller } 4799a4ed38d7SDouglas Fuller 4800a4ed38d7SDouglas Fuller static int decode_watchers(void **p, void *end, 4801a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4802a4ed38d7SDouglas Fuller u32 *num_watchers) 4803a4ed38d7SDouglas Fuller { 4804a4ed38d7SDouglas Fuller u8 struct_v; 4805a4ed38d7SDouglas Fuller u32 struct_len; 4806a4ed38d7SDouglas Fuller int i; 4807a4ed38d7SDouglas Fuller int ret; 4808a4ed38d7SDouglas Fuller 4809a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t", 4810a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4811a4ed38d7SDouglas Fuller if (ret) 4812a4ed38d7SDouglas Fuller return ret; 4813a4ed38d7SDouglas Fuller 4814a4ed38d7SDouglas Fuller *num_watchers = ceph_decode_32(p); 4815a4ed38d7SDouglas Fuller *watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO); 4816a4ed38d7SDouglas Fuller if (!*watchers) 4817a4ed38d7SDouglas Fuller return -ENOMEM; 4818a4ed38d7SDouglas Fuller 4819a4ed38d7SDouglas Fuller for (i = 0; i < *num_watchers; i++) { 4820a4ed38d7SDouglas Fuller ret = decode_watcher(p, end, *watchers + i); 4821a4ed38d7SDouglas Fuller if (ret) { 4822a4ed38d7SDouglas Fuller kfree(*watchers); 4823a4ed38d7SDouglas Fuller return ret; 4824a4ed38d7SDouglas Fuller } 4825a4ed38d7SDouglas Fuller } 4826a4ed38d7SDouglas Fuller 4827a4ed38d7SDouglas Fuller return 0; 4828a4ed38d7SDouglas Fuller } 4829a4ed38d7SDouglas Fuller 4830a4ed38d7SDouglas Fuller /* 4831a4ed38d7SDouglas Fuller * On success, the caller is responsible for: 4832a4ed38d7SDouglas Fuller * 4833a4ed38d7SDouglas Fuller * kfree(watchers); 4834a4ed38d7SDouglas Fuller */ 4835a4ed38d7SDouglas Fuller int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, 4836a4ed38d7SDouglas Fuller struct ceph_object_id *oid, 4837a4ed38d7SDouglas Fuller struct ceph_object_locator *oloc, 4838a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4839a4ed38d7SDouglas Fuller u32 *num_watchers) 4840a4ed38d7SDouglas Fuller { 4841a4ed38d7SDouglas Fuller struct ceph_osd_request *req; 4842a4ed38d7SDouglas Fuller struct page **pages; 4843a4ed38d7SDouglas Fuller int ret; 4844a4ed38d7SDouglas Fuller 4845a4ed38d7SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4846a4ed38d7SDouglas Fuller if (!req) 4847a4ed38d7SDouglas Fuller return -ENOMEM; 4848a4ed38d7SDouglas Fuller 4849a4ed38d7SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 4850a4ed38d7SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 4851a4ed38d7SDouglas Fuller req->r_flags = CEPH_OSD_FLAG_READ; 4852a4ed38d7SDouglas Fuller 4853a4ed38d7SDouglas Fuller ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4854a4ed38d7SDouglas Fuller if (ret) 4855a4ed38d7SDouglas Fuller goto out_put_req; 4856a4ed38d7SDouglas Fuller 4857a4ed38d7SDouglas Fuller pages = ceph_alloc_page_vector(1, GFP_NOIO); 4858a4ed38d7SDouglas Fuller if (IS_ERR(pages)) { 4859a4ed38d7SDouglas Fuller ret = PTR_ERR(pages); 4860a4ed38d7SDouglas Fuller goto out_put_req; 4861a4ed38d7SDouglas Fuller } 4862a4ed38d7SDouglas Fuller 4863a4ed38d7SDouglas Fuller osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0); 4864a4ed38d7SDouglas Fuller ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers, 4865a4ed38d7SDouglas Fuller response_data), 4866a4ed38d7SDouglas Fuller pages, PAGE_SIZE, 0, false, true); 4867a4ed38d7SDouglas Fuller 4868a4ed38d7SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 4869a4ed38d7SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 4870a4ed38d7SDouglas Fuller if (ret >= 0) { 4871a4ed38d7SDouglas Fuller void *p = page_address(pages[0]); 4872a4ed38d7SDouglas Fuller void *const end = p + req->r_ops[0].outdata_len; 4873a4ed38d7SDouglas Fuller 4874a4ed38d7SDouglas Fuller ret = decode_watchers(&p, end, watchers, num_watchers); 4875a4ed38d7SDouglas Fuller } 4876a4ed38d7SDouglas Fuller 4877a4ed38d7SDouglas Fuller out_put_req: 4878a4ed38d7SDouglas Fuller ceph_osdc_put_request(req); 4879a4ed38d7SDouglas Fuller return ret; 4880a4ed38d7SDouglas Fuller } 4881a4ed38d7SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_list_watchers); 4882a4ed38d7SDouglas Fuller 4883b07d3c4bSIlya Dryomov /* 4884dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 4885dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 4886dd935f44SJosh Durgin */ 4887f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 4888dd935f44SJosh Durgin { 488999d16943SIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 4890dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 4891dd935f44SJosh Durgin } 4892dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 4893dd935f44SJosh Durgin 48947cca78c9SIlya Dryomov void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) 48957cca78c9SIlya Dryomov { 48967cca78c9SIlya Dryomov down_read(&osdc->lock); 48977cca78c9SIlya Dryomov maybe_request_map(osdc); 48987cca78c9SIlya Dryomov up_read(&osdc->lock); 48997cca78c9SIlya Dryomov } 49007cca78c9SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_maybe_request_map); 4901dd935f44SJosh Durgin 4902dd935f44SJosh Durgin /* 4903428a7158SDouglas Fuller * Execute an OSD class method on an object. 4904428a7158SDouglas Fuller * 4905428a7158SDouglas Fuller * @flags: CEPH_OSD_FLAG_* 49062544a020SIlya Dryomov * @resp_len: in/out param for reply length 4907428a7158SDouglas Fuller */ 4908428a7158SDouglas Fuller int ceph_osdc_call(struct ceph_osd_client *osdc, 4909428a7158SDouglas Fuller struct ceph_object_id *oid, 4910428a7158SDouglas Fuller struct ceph_object_locator *oloc, 4911428a7158SDouglas Fuller const char *class, const char *method, 4912428a7158SDouglas Fuller unsigned int flags, 4913428a7158SDouglas Fuller struct page *req_page, size_t req_len, 4914428a7158SDouglas Fuller struct page *resp_page, size_t *resp_len) 4915428a7158SDouglas Fuller { 4916428a7158SDouglas Fuller struct ceph_osd_request *req; 4917428a7158SDouglas Fuller int ret; 4918428a7158SDouglas Fuller 49192544a020SIlya Dryomov if (req_len > PAGE_SIZE || (resp_page && *resp_len > PAGE_SIZE)) 49202544a020SIlya Dryomov return -E2BIG; 49212544a020SIlya Dryomov 4922428a7158SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4923428a7158SDouglas Fuller if (!req) 4924428a7158SDouglas Fuller return -ENOMEM; 4925428a7158SDouglas Fuller 4926428a7158SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 4927428a7158SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 4928428a7158SDouglas Fuller req->r_flags = flags; 4929428a7158SDouglas Fuller 4930428a7158SDouglas Fuller ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4931428a7158SDouglas Fuller if (ret) 4932428a7158SDouglas Fuller goto out_put_req; 4933428a7158SDouglas Fuller 4934fe943d50SChengguang Xu ret = osd_req_op_cls_init(req, 0, CEPH_OSD_OP_CALL, class, method); 4935fe943d50SChengguang Xu if (ret) 4936fe943d50SChengguang Xu goto out_put_req; 4937fe943d50SChengguang Xu 4938428a7158SDouglas Fuller if (req_page) 4939428a7158SDouglas Fuller osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len, 4940428a7158SDouglas Fuller 0, false, false); 4941428a7158SDouglas Fuller if (resp_page) 4942428a7158SDouglas Fuller osd_req_op_cls_response_data_pages(req, 0, &resp_page, 49432544a020SIlya Dryomov *resp_len, 0, false, false); 4944428a7158SDouglas Fuller 4945428a7158SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 4946428a7158SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 4947428a7158SDouglas Fuller if (ret >= 0) { 4948428a7158SDouglas Fuller ret = req->r_ops[0].rval; 4949428a7158SDouglas Fuller if (resp_page) 4950428a7158SDouglas Fuller *resp_len = req->r_ops[0].outdata_len; 4951428a7158SDouglas Fuller } 4952428a7158SDouglas Fuller 4953428a7158SDouglas Fuller out_put_req: 4954428a7158SDouglas Fuller ceph_osdc_put_request(req); 4955428a7158SDouglas Fuller return ret; 4956428a7158SDouglas Fuller } 4957428a7158SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_call); 4958428a7158SDouglas Fuller 4959428a7158SDouglas Fuller /* 49603d14c5d2SYehuda Sadeh * init, shutdown 49613d14c5d2SYehuda Sadeh */ 49623d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 49633d14c5d2SYehuda Sadeh { 49643d14c5d2SYehuda Sadeh int err; 49653d14c5d2SYehuda Sadeh 49663d14c5d2SYehuda Sadeh dout("init\n"); 49673d14c5d2SYehuda Sadeh osdc->client = client; 49685aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 49693d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 49703d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 49719dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 49725aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 49735aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 49745aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 4975264048afSIlya Dryomov osdc->last_linger_id = CEPH_LINGER_ID_START; 4976922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 49774609245eSIlya Dryomov osdc->map_checks = RB_ROOT; 49784609245eSIlya Dryomov osdc->linger_map_checks = RB_ROOT; 49793d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 49803d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 49813d14c5d2SYehuda Sadeh 49823d14c5d2SYehuda Sadeh err = -ENOMEM; 4983e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 4984e5253a7bSIlya Dryomov if (!osdc->osdmap) 4985e5253a7bSIlya Dryomov goto out; 4986e5253a7bSIlya Dryomov 49879e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 49889e767adbSIlya Dryomov ceph_osd_request_cache); 49893d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 4990e5253a7bSIlya Dryomov goto out_map; 49913d14c5d2SYehuda Sadeh 4992d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 4993711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 49943d14c5d2SYehuda Sadeh if (err < 0) 49953d14c5d2SYehuda Sadeh goto out_mempool; 4996d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 4997711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 49983d14c5d2SYehuda Sadeh if (err < 0) 49993d14c5d2SYehuda Sadeh goto out_msgpool; 5000a40c4f10SYehuda Sadeh 5001dbcae088SDan Carpenter err = -ENOMEM; 5002a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 5003dbcae088SDan Carpenter if (!osdc->notify_wq) 5004c172ec5cSIlya Dryomov goto out_msgpool_reply; 5005c172ec5cSIlya Dryomov 5006fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 5007fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 5008b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 5009b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 5010b37ee1b9SIlya Dryomov 50113d14c5d2SYehuda Sadeh return 0; 50123d14c5d2SYehuda Sadeh 5013c172ec5cSIlya Dryomov out_msgpool_reply: 5014c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 50153d14c5d2SYehuda Sadeh out_msgpool: 50163d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 50173d14c5d2SYehuda Sadeh out_mempool: 50183d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 5019e5253a7bSIlya Dryomov out_map: 5020e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 50213d14c5d2SYehuda Sadeh out: 50223d14c5d2SYehuda Sadeh return err; 50233d14c5d2SYehuda Sadeh } 50243d14c5d2SYehuda Sadeh 50253d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 50263d14c5d2SYehuda Sadeh { 5027a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 5028a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 50293d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 50303d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 503142a2c09fSIlya Dryomov 50325aea3dcdSIlya Dryomov down_write(&osdc->lock); 503342a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 503442a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 503542a2c09fSIlya Dryomov struct ceph_osd, o_node); 50365aea3dcdSIlya Dryomov close_osd(osd); 503742a2c09fSIlya Dryomov } 50385aea3dcdSIlya Dryomov up_write(&osdc->lock); 503902113a0fSElena Reshetova WARN_ON(refcount_read(&osdc->homeless_osd.o_ref) != 1); 50405aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 50415aea3dcdSIlya Dryomov 50425aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 5043922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 50444609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); 50454609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); 50465aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 50475aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 504842a2c09fSIlya Dryomov 50493d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 50503d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 50513d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 50523d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 50533d14c5d2SYehuda Sadeh } 50543d14c5d2SYehuda Sadeh 50553d14c5d2SYehuda Sadeh /* 50563d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 50573d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 50583d14c5d2SYehuda Sadeh */ 50593d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 50603d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 50613d14c5d2SYehuda Sadeh u64 off, u64 *plen, 50623d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 5063b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 50643d14c5d2SYehuda Sadeh { 50653d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 50663d14c5d2SYehuda Sadeh int rc = 0; 50673d14c5d2SYehuda Sadeh 50683d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 50693d14c5d2SYehuda Sadeh vino.snap, off, *plen); 5070715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 50713d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 5072acead002SAlex Elder NULL, truncate_seq, truncate_size, 5073153e5167SAlex Elder false); 50746816282dSSage Weil if (IS_ERR(req)) 50756816282dSSage Weil return PTR_ERR(req); 50763d14c5d2SYehuda Sadeh 50773d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 5078406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 5079a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 50803d14c5d2SYehuda Sadeh 5081e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 508243bfe5deSAlex Elder off, *plen, *plen, page_align); 50833d14c5d2SYehuda Sadeh 50843d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 50853d14c5d2SYehuda Sadeh if (!rc) 50863d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 50873d14c5d2SYehuda Sadeh 50883d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 50893d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 50903d14c5d2SYehuda Sadeh return rc; 50913d14c5d2SYehuda Sadeh } 50923d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 50933d14c5d2SYehuda Sadeh 50943d14c5d2SYehuda Sadeh /* 50953d14c5d2SYehuda Sadeh * do a synchronous write on N pages 50963d14c5d2SYehuda Sadeh */ 50973d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 50983d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 50993d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 51003d14c5d2SYehuda Sadeh u64 off, u64 len, 51013d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 51023d14c5d2SYehuda Sadeh struct timespec *mtime, 510324808826SAlex Elder struct page **pages, int num_pages) 51043d14c5d2SYehuda Sadeh { 51053d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 51063d14c5d2SYehuda Sadeh int rc = 0; 5107b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 51083d14c5d2SYehuda Sadeh 5109715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 511054ea0046SIlya Dryomov CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE, 5111acead002SAlex Elder snapc, truncate_seq, truncate_size, 5112153e5167SAlex Elder true); 51136816282dSSage Weil if (IS_ERR(req)) 51146816282dSSage Weil return PTR_ERR(req); 51153d14c5d2SYehuda Sadeh 51163d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 5117406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 511843bfe5deSAlex Elder false, false); 511943bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 51203d14c5d2SYehuda Sadeh 5121bb873b53SIlya Dryomov req->r_mtime = *mtime; 512287f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 51233d14c5d2SYehuda Sadeh if (!rc) 51243d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 51253d14c5d2SYehuda Sadeh 51263d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 51273d14c5d2SYehuda Sadeh if (rc == 0) 51283d14c5d2SYehuda Sadeh rc = len; 51293d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 51303d14c5d2SYehuda Sadeh return rc; 51313d14c5d2SYehuda Sadeh } 51323d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 51333d14c5d2SYehuda Sadeh 513457a35dfbSChengguang Xu int __init ceph_osdc_setup(void) 51355522ae0bSAlex Elder { 51363f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 51373f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 51383f1af42aSIlya Dryomov 51395522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 51403f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 51413f1af42aSIlya Dryomov 0, 0, NULL); 51425522ae0bSAlex Elder 51435522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 51445522ae0bSAlex Elder } 51455522ae0bSAlex Elder 51465522ae0bSAlex Elder void ceph_osdc_cleanup(void) 51475522ae0bSAlex Elder { 51485522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 51495522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 51505522ae0bSAlex Elder ceph_osd_request_cache = NULL; 51515522ae0bSAlex Elder } 51525522ae0bSAlex Elder 51533d14c5d2SYehuda Sadeh /* 51543d14c5d2SYehuda Sadeh * handle incoming message 51553d14c5d2SYehuda Sadeh */ 51563d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 51573d14c5d2SYehuda Sadeh { 51583d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 51595aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 51603d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 51613d14c5d2SYehuda Sadeh 51623d14c5d2SYehuda Sadeh switch (type) { 51633d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 51643d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 51653d14c5d2SYehuda Sadeh break; 51663d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 51675aea3dcdSIlya Dryomov handle_reply(osd, msg); 51683d14c5d2SYehuda Sadeh break; 5169a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5170a02a946dSIlya Dryomov handle_backoff(osd, msg); 5171a02a946dSIlya Dryomov break; 5172a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 5173a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 5174a40c4f10SYehuda Sadeh break; 51753d14c5d2SYehuda Sadeh 51763d14c5d2SYehuda Sadeh default: 51773d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 51783d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 51793d14c5d2SYehuda Sadeh } 51805aea3dcdSIlya Dryomov 51813d14c5d2SYehuda Sadeh ceph_msg_put(msg); 51823d14c5d2SYehuda Sadeh } 51833d14c5d2SYehuda Sadeh 51843d14c5d2SYehuda Sadeh /* 5185d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 5186d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 5187d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 51883d14c5d2SYehuda Sadeh */ 51893d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 51903d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 51913d14c5d2SYehuda Sadeh int *skip) 51923d14c5d2SYehuda Sadeh { 51933d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 51943d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 51955aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 51963d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 51973f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 51983d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 51995aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 52003d14c5d2SYehuda Sadeh 52015aea3dcdSIlya Dryomov down_read(&osdc->lock); 52025aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 52035aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 52045aea3dcdSIlya Dryomov *skip = 1; 52055aea3dcdSIlya Dryomov goto out_unlock_osdc; 52065aea3dcdSIlya Dryomov } 52075aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 52085aea3dcdSIlya Dryomov 52095aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 52105aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 52113d14c5d2SYehuda Sadeh if (!req) { 5212cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 5213cd8140c6SIlya Dryomov osd->o_osd, tid); 5214d15f9d69SIlya Dryomov *skip = 1; 52155aea3dcdSIlya Dryomov goto out_unlock_session; 52163d14c5d2SYehuda Sadeh } 52173d14c5d2SYehuda Sadeh 52188921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 52193d14c5d2SYehuda Sadeh 5220f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 5221d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 5222d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 5223d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 52243f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 52253f0a4ac5SIlya Dryomov false); 52263d14c5d2SYehuda Sadeh if (!m) 52275aea3dcdSIlya Dryomov goto out_unlock_session; 52283d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 52293d14c5d2SYehuda Sadeh req->r_reply = m; 52303d14c5d2SYehuda Sadeh } 52313d14c5d2SYehuda Sadeh 5232d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 5233d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 5234d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 5235d15f9d69SIlya Dryomov req->r_reply->data_length); 52363d14c5d2SYehuda Sadeh m = NULL; 5237d15f9d69SIlya Dryomov *skip = 1; 52385aea3dcdSIlya Dryomov goto out_unlock_session; 52393d14c5d2SYehuda Sadeh } 5240d15f9d69SIlya Dryomov 5241d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 52423d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 52433d14c5d2SYehuda Sadeh 52445aea3dcdSIlya Dryomov out_unlock_session: 52455aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 52465aea3dcdSIlya Dryomov out_unlock_osdc: 52475aea3dcdSIlya Dryomov up_read(&osdc->lock); 52483d14c5d2SYehuda Sadeh return m; 52493d14c5d2SYehuda Sadeh } 52503d14c5d2SYehuda Sadeh 525119079203SIlya Dryomov /* 525219079203SIlya Dryomov * TODO: switch to a msg-owned pagelist 525319079203SIlya Dryomov */ 525419079203SIlya Dryomov static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) 525519079203SIlya Dryomov { 525619079203SIlya Dryomov struct ceph_msg *m; 525719079203SIlya Dryomov int type = le16_to_cpu(hdr->type); 525819079203SIlya Dryomov u32 front_len = le32_to_cpu(hdr->front_len); 525919079203SIlya Dryomov u32 data_len = le32_to_cpu(hdr->data_len); 526019079203SIlya Dryomov 526119079203SIlya Dryomov m = ceph_msg_new(type, front_len, GFP_NOIO, false); 526219079203SIlya Dryomov if (!m) 526319079203SIlya Dryomov return NULL; 526419079203SIlya Dryomov 526519079203SIlya Dryomov if (data_len) { 526619079203SIlya Dryomov struct page **pages; 526719079203SIlya Dryomov struct ceph_osd_data osd_data; 526819079203SIlya Dryomov 526919079203SIlya Dryomov pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), 527019079203SIlya Dryomov GFP_NOIO); 5271c22e853aSWei Yongjun if (IS_ERR(pages)) { 527219079203SIlya Dryomov ceph_msg_put(m); 527319079203SIlya Dryomov return NULL; 527419079203SIlya Dryomov } 527519079203SIlya Dryomov 527619079203SIlya Dryomov ceph_osd_data_pages_init(&osd_data, pages, data_len, 0, false, 527719079203SIlya Dryomov false); 527819079203SIlya Dryomov ceph_osdc_msg_data_add(m, &osd_data); 527919079203SIlya Dryomov } 528019079203SIlya Dryomov 528119079203SIlya Dryomov return m; 528219079203SIlya Dryomov } 528319079203SIlya Dryomov 52843d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 52853d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 52863d14c5d2SYehuda Sadeh int *skip) 52873d14c5d2SYehuda Sadeh { 52883d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 52893d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 52903d14c5d2SYehuda Sadeh 52911c20f2d2SAlex Elder *skip = 0; 52923d14c5d2SYehuda Sadeh switch (type) { 52933d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 5294a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5295a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 529619079203SIlya Dryomov return alloc_msg_with_page_vector(hdr); 52973d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 52983d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 52993d14c5d2SYehuda Sadeh default: 53005aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 53015aea3dcdSIlya Dryomov osd->o_osd, type); 53023d14c5d2SYehuda Sadeh *skip = 1; 53033d14c5d2SYehuda Sadeh return NULL; 53043d14c5d2SYehuda Sadeh } 53053d14c5d2SYehuda Sadeh } 53063d14c5d2SYehuda Sadeh 53073d14c5d2SYehuda Sadeh /* 53083d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 53093d14c5d2SYehuda Sadeh */ 53103d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 53113d14c5d2SYehuda Sadeh { 53123d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 53133d14c5d2SYehuda Sadeh if (get_osd(osd)) 53143d14c5d2SYehuda Sadeh return con; 53153d14c5d2SYehuda Sadeh return NULL; 53163d14c5d2SYehuda Sadeh } 53173d14c5d2SYehuda Sadeh 53183d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 53193d14c5d2SYehuda Sadeh { 53203d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 53213d14c5d2SYehuda Sadeh put_osd(osd); 53223d14c5d2SYehuda Sadeh } 53233d14c5d2SYehuda Sadeh 53243d14c5d2SYehuda Sadeh /* 53253d14c5d2SYehuda Sadeh * authentication 53263d14c5d2SYehuda Sadeh */ 5327a3530df3SAlex Elder /* 5328a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 5329a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 5330a3530df3SAlex Elder */ 5331a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 53328f43fb53SAlex Elder int *proto, int force_new) 53333d14c5d2SYehuda Sadeh { 53343d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 53353d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 53363d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 533774f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 53383d14c5d2SYehuda Sadeh 533974f1869fSAlex Elder if (force_new && auth->authorizer) { 53406c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 534174f1869fSAlex Elder auth->authorizer = NULL; 53423d14c5d2SYehuda Sadeh } 534327859f97SSage Weil if (!auth->authorizer) { 534427859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 5345a3530df3SAlex Elder auth); 53463d14c5d2SYehuda Sadeh if (ret) 5347a3530df3SAlex Elder return ERR_PTR(ret); 534827859f97SSage Weil } else { 534927859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 53500bed9b5cSSage Weil auth); 53510bed9b5cSSage Weil if (ret) 53520bed9b5cSSage Weil return ERR_PTR(ret); 53533d14c5d2SYehuda Sadeh } 53543d14c5d2SYehuda Sadeh *proto = ac->protocol; 535574f1869fSAlex Elder 5356a3530df3SAlex Elder return auth; 53573d14c5d2SYehuda Sadeh } 53583d14c5d2SYehuda Sadeh 53593d14c5d2SYehuda Sadeh 53600dde5848SIlya Dryomov static int verify_authorizer_reply(struct ceph_connection *con) 53613d14c5d2SYehuda Sadeh { 53623d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 53633d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 53643d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 53653d14c5d2SYehuda Sadeh 53660dde5848SIlya Dryomov return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer); 53673d14c5d2SYehuda Sadeh } 53683d14c5d2SYehuda Sadeh 53693d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 53703d14c5d2SYehuda Sadeh { 53713d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 53723d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 53733d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 53743d14c5d2SYehuda Sadeh 537527859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 53763d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 53773d14c5d2SYehuda Sadeh } 53783d14c5d2SYehuda Sadeh 53798cb441c0SIlya Dryomov static void osd_reencode_message(struct ceph_msg *msg) 53808cb441c0SIlya Dryomov { 5381914902afSIlya Dryomov int type = le16_to_cpu(msg->hdr.type); 5382914902afSIlya Dryomov 5383914902afSIlya Dryomov if (type == CEPH_MSG_OSD_OP) 53848cb441c0SIlya Dryomov encode_request_finish(msg); 53858cb441c0SIlya Dryomov } 53868cb441c0SIlya Dryomov 538779dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 538833d07337SYan, Zheng { 538979dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 539033d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 539179dbd1baSIlya Dryomov 539233d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 539333d07337SYan, Zheng } 539433d07337SYan, Zheng 539579dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 539633d07337SYan, Zheng { 539779dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 539833d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 539979dbd1baSIlya Dryomov 540033d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 540133d07337SYan, Zheng } 540233d07337SYan, Zheng 54033d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 54043d14c5d2SYehuda Sadeh .get = get_osd_con, 54053d14c5d2SYehuda Sadeh .put = put_osd_con, 54063d14c5d2SYehuda Sadeh .dispatch = dispatch, 54073d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 54083d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 54093d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 54103d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 54118cb441c0SIlya Dryomov .reencode_message = osd_reencode_message, 541279dbd1baSIlya Dryomov .sign_message = osd_sign_message, 541379dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 54145aea3dcdSIlya Dryomov .fault = osd_fault, 54153d14c5d2SYehuda Sadeh }; 5416