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 12989486833SIlya Dryomov /* 13089486833SIlya Dryomov * Consumes @pages if @own_pages is true. 13189486833SIlya Dryomov */ 132a4ce40a9SAlex Elder static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, 13343bfe5deSAlex Elder struct page **pages, u64 length, u32 alignment, 13443bfe5deSAlex Elder bool pages_from_pool, bool own_pages) 13543bfe5deSAlex Elder { 13643bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 13743bfe5deSAlex Elder osd_data->pages = pages; 13843bfe5deSAlex Elder osd_data->length = length; 13943bfe5deSAlex Elder osd_data->alignment = alignment; 14043bfe5deSAlex Elder osd_data->pages_from_pool = pages_from_pool; 14143bfe5deSAlex Elder osd_data->own_pages = own_pages; 14243bfe5deSAlex Elder } 14343bfe5deSAlex Elder 14489486833SIlya Dryomov /* 14589486833SIlya Dryomov * Consumes a ref on @pagelist. 14689486833SIlya Dryomov */ 147a4ce40a9SAlex Elder static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, 14843bfe5deSAlex Elder struct ceph_pagelist *pagelist) 14943bfe5deSAlex Elder { 15043bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; 15143bfe5deSAlex Elder osd_data->pagelist = pagelist; 15243bfe5deSAlex Elder } 15343bfe5deSAlex Elder 15443bfe5deSAlex Elder #ifdef CONFIG_BLOCK 155a4ce40a9SAlex Elder static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 1565359a17dSIlya Dryomov struct ceph_bio_iter *bio_pos, 1575359a17dSIlya Dryomov u32 bio_length) 15843bfe5deSAlex Elder { 15943bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_BIO; 1605359a17dSIlya Dryomov osd_data->bio_pos = *bio_pos; 16143bfe5deSAlex Elder osd_data->bio_length = bio_length; 16243bfe5deSAlex Elder } 16343bfe5deSAlex Elder #endif /* CONFIG_BLOCK */ 16443bfe5deSAlex Elder 165b9e281c2SIlya Dryomov static void ceph_osd_data_bvecs_init(struct ceph_osd_data *osd_data, 1660010f705SIlya Dryomov struct ceph_bvec_iter *bvec_pos, 1670010f705SIlya Dryomov u32 num_bvecs) 168b9e281c2SIlya Dryomov { 169b9e281c2SIlya Dryomov osd_data->type = CEPH_OSD_DATA_TYPE_BVECS; 170b9e281c2SIlya Dryomov osd_data->bvec_pos = *bvec_pos; 1710010f705SIlya Dryomov osd_data->num_bvecs = num_bvecs; 172b9e281c2SIlya Dryomov } 173b9e281c2SIlya Dryomov 174dee0c5f8SJeff Layton static void ceph_osd_iter_init(struct ceph_osd_data *osd_data, 175dee0c5f8SJeff Layton struct iov_iter *iter) 176dee0c5f8SJeff Layton { 177dee0c5f8SJeff Layton osd_data->type = CEPH_OSD_DATA_TYPE_ITER; 178dee0c5f8SJeff Layton osd_data->iter = *iter; 179dee0c5f8SJeff Layton } 180dee0c5f8SJeff Layton 18149719778SAlex Elder static struct ceph_osd_data * 18249719778SAlex Elder osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) 18349719778SAlex Elder { 18449719778SAlex Elder BUG_ON(which >= osd_req->r_num_ops); 18549719778SAlex Elder 18649719778SAlex Elder return &osd_req->r_ops[which].raw_data_in; 18749719778SAlex Elder } 18849719778SAlex Elder 189a4ce40a9SAlex Elder struct ceph_osd_data * 190a4ce40a9SAlex Elder osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, 191406e2c9fSAlex Elder unsigned int which) 192a4ce40a9SAlex Elder { 193863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, extent, osd_data); 194a4ce40a9SAlex Elder } 195a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data); 196a4ce40a9SAlex Elder 19749719778SAlex Elder void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 19849719778SAlex Elder unsigned int which, struct page **pages, 19949719778SAlex Elder u64 length, u32 alignment, 20049719778SAlex Elder bool pages_from_pool, bool own_pages) 20149719778SAlex Elder { 20249719778SAlex Elder struct ceph_osd_data *osd_data; 20349719778SAlex Elder 20449719778SAlex Elder osd_data = osd_req_op_raw_data_in(osd_req, which); 20549719778SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 20649719778SAlex Elder pages_from_pool, own_pages); 20749719778SAlex Elder } 20849719778SAlex Elder EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 20949719778SAlex Elder 210a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 211406e2c9fSAlex Elder unsigned int which, struct page **pages, 212406e2c9fSAlex Elder u64 length, u32 alignment, 213a4ce40a9SAlex Elder bool pages_from_pool, bool own_pages) 214a4ce40a9SAlex Elder { 215a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 216a4ce40a9SAlex Elder 217863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 218a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 219a4ce40a9SAlex Elder pages_from_pool, own_pages); 220a4ce40a9SAlex Elder } 221a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 222a4ce40a9SAlex Elder 223a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 224406e2c9fSAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 225a4ce40a9SAlex Elder { 226a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 227a4ce40a9SAlex Elder 228863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 229a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 230a4ce40a9SAlex Elder } 231a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 232a4ce40a9SAlex Elder 233a4ce40a9SAlex Elder #ifdef CONFIG_BLOCK 234a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 2355359a17dSIlya Dryomov unsigned int which, 2365359a17dSIlya Dryomov struct ceph_bio_iter *bio_pos, 2375359a17dSIlya Dryomov u32 bio_length) 238a4ce40a9SAlex Elder { 239a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 240863c7eb5SAlex Elder 241863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2425359a17dSIlya Dryomov ceph_osd_data_bio_init(osd_data, bio_pos, bio_length); 243a4ce40a9SAlex Elder } 244a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 245a4ce40a9SAlex Elder #endif /* CONFIG_BLOCK */ 246a4ce40a9SAlex Elder 2470010f705SIlya Dryomov void osd_req_op_extent_osd_data_bvecs(struct ceph_osd_request *osd_req, 2480010f705SIlya Dryomov unsigned int which, 2490010f705SIlya Dryomov struct bio_vec *bvecs, u32 num_bvecs, 2500010f705SIlya Dryomov u32 bytes) 2510010f705SIlya Dryomov { 2520010f705SIlya Dryomov struct ceph_osd_data *osd_data; 2530010f705SIlya Dryomov struct ceph_bvec_iter it = { 2540010f705SIlya Dryomov .bvecs = bvecs, 2550010f705SIlya Dryomov .iter = { .bi_size = bytes }, 2560010f705SIlya Dryomov }; 2570010f705SIlya Dryomov 2580010f705SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2590010f705SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, &it, num_bvecs); 2600010f705SIlya Dryomov } 2610010f705SIlya Dryomov EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvecs); 2620010f705SIlya Dryomov 263b9e281c2SIlya Dryomov void osd_req_op_extent_osd_data_bvec_pos(struct ceph_osd_request *osd_req, 264b9e281c2SIlya Dryomov unsigned int which, 265b9e281c2SIlya Dryomov struct ceph_bvec_iter *bvec_pos) 266b9e281c2SIlya Dryomov { 267b9e281c2SIlya Dryomov struct ceph_osd_data *osd_data; 268b9e281c2SIlya Dryomov 269b9e281c2SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2700010f705SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, bvec_pos, 0); 271b9e281c2SIlya Dryomov } 272b9e281c2SIlya Dryomov EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvec_pos); 273b9e281c2SIlya Dryomov 274dee0c5f8SJeff Layton /** 275dee0c5f8SJeff Layton * osd_req_op_extent_osd_iter - Set up an operation with an iterator buffer 276dee0c5f8SJeff Layton * @osd_req: The request to set up 277dee0c5f8SJeff Layton * @which: Index of the operation in which to set the iter 278dee0c5f8SJeff Layton * @iter: The buffer iterator 279dee0c5f8SJeff Layton */ 280dee0c5f8SJeff Layton void osd_req_op_extent_osd_iter(struct ceph_osd_request *osd_req, 281dee0c5f8SJeff Layton unsigned int which, struct iov_iter *iter) 282dee0c5f8SJeff Layton { 283dee0c5f8SJeff Layton struct ceph_osd_data *osd_data; 284dee0c5f8SJeff Layton 285dee0c5f8SJeff Layton osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 286dee0c5f8SJeff Layton ceph_osd_iter_init(osd_data, iter); 287dee0c5f8SJeff Layton } 288dee0c5f8SJeff Layton EXPORT_SYMBOL(osd_req_op_extent_osd_iter); 289dee0c5f8SJeff Layton 290a4ce40a9SAlex Elder static void osd_req_op_cls_request_info_pagelist( 291a4ce40a9SAlex Elder struct ceph_osd_request *osd_req, 292a4ce40a9SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 293a4ce40a9SAlex Elder { 294a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 295a4ce40a9SAlex Elder 296863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_info); 297a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 298a4ce40a9SAlex Elder } 299a4ce40a9SAlex Elder 30004017e29SAlex Elder void osd_req_op_cls_request_data_pagelist( 30104017e29SAlex Elder struct ceph_osd_request *osd_req, 30204017e29SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 30304017e29SAlex Elder { 30404017e29SAlex Elder struct ceph_osd_data *osd_data; 30504017e29SAlex Elder 306863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 30704017e29SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 308bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += pagelist->length; 309bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += pagelist->length; 31004017e29SAlex Elder } 31104017e29SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 31204017e29SAlex Elder 3136c57b554SAlex Elder void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 3146c57b554SAlex Elder unsigned int which, struct page **pages, u64 length, 3156c57b554SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 3166c57b554SAlex Elder { 3176c57b554SAlex Elder struct ceph_osd_data *osd_data; 3186c57b554SAlex Elder 3196c57b554SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 3206c57b554SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 3216c57b554SAlex Elder pages_from_pool, own_pages); 322bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += length; 323bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += length; 3246c57b554SAlex Elder } 3256c57b554SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 3266c57b554SAlex Elder 327b9e281c2SIlya Dryomov void osd_req_op_cls_request_data_bvecs(struct ceph_osd_request *osd_req, 328b9e281c2SIlya Dryomov unsigned int which, 3290010f705SIlya Dryomov struct bio_vec *bvecs, u32 num_bvecs, 3300010f705SIlya Dryomov u32 bytes) 331b9e281c2SIlya Dryomov { 332b9e281c2SIlya Dryomov struct ceph_osd_data *osd_data; 333b9e281c2SIlya Dryomov struct ceph_bvec_iter it = { 334b9e281c2SIlya Dryomov .bvecs = bvecs, 335b9e281c2SIlya Dryomov .iter = { .bi_size = bytes }, 336b9e281c2SIlya Dryomov }; 337b9e281c2SIlya Dryomov 338b9e281c2SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, cls, request_data); 3390010f705SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, &it, num_bvecs); 340b9e281c2SIlya Dryomov osd_req->r_ops[which].cls.indata_len += bytes; 341b9e281c2SIlya Dryomov osd_req->r_ops[which].indata_len += bytes; 342b9e281c2SIlya Dryomov } 343b9e281c2SIlya Dryomov EXPORT_SYMBOL(osd_req_op_cls_request_data_bvecs); 344b9e281c2SIlya Dryomov 345a4ce40a9SAlex Elder void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 346a4ce40a9SAlex Elder unsigned int which, struct page **pages, u64 length, 347a4ce40a9SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 348a4ce40a9SAlex Elder { 349a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 350a4ce40a9SAlex Elder 351863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, response_data); 352a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 353a4ce40a9SAlex Elder pages_from_pool, own_pages); 354a4ce40a9SAlex Elder } 355a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 356a4ce40a9SAlex Elder 35723c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 35823c08a9cSAlex Elder { 35923c08a9cSAlex Elder switch (osd_data->type) { 36023c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 36123c08a9cSAlex Elder return 0; 36223c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 36323c08a9cSAlex Elder return osd_data->length; 36423c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 36523c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 36623c08a9cSAlex Elder #ifdef CONFIG_BLOCK 36723c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 36823c08a9cSAlex Elder return (u64)osd_data->bio_length; 36923c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 370b9e281c2SIlya Dryomov case CEPH_OSD_DATA_TYPE_BVECS: 371b9e281c2SIlya Dryomov return osd_data->bvec_pos.iter.bi_size; 372dee0c5f8SJeff Layton case CEPH_OSD_DATA_TYPE_ITER: 373dee0c5f8SJeff Layton return iov_iter_count(&osd_data->iter); 37423c08a9cSAlex Elder default: 37523c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 37623c08a9cSAlex Elder return 0; 37723c08a9cSAlex Elder } 37823c08a9cSAlex Elder } 37923c08a9cSAlex Elder 380c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 381c54d47bfSAlex Elder { 3825476492fSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 383c54d47bfSAlex Elder int num_pages; 384c54d47bfSAlex Elder 385c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 386c54d47bfSAlex Elder (u64)osd_data->length); 387c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 38889486833SIlya Dryomov } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 38989486833SIlya Dryomov ceph_pagelist_release(osd_data->pagelist); 390c54d47bfSAlex Elder } 3915476492fSAlex Elder ceph_osd_data_init(osd_data); 3925476492fSAlex Elder } 3935476492fSAlex Elder 3945476492fSAlex Elder static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 3955476492fSAlex Elder unsigned int which) 3965476492fSAlex Elder { 3975476492fSAlex Elder struct ceph_osd_req_op *op; 3985476492fSAlex Elder 3995476492fSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 4005476492fSAlex Elder op = &osd_req->r_ops[which]; 4015476492fSAlex Elder 4025476492fSAlex Elder switch (op->op) { 4035476492fSAlex Elder case CEPH_OSD_OP_READ: 404f628d799SJeff Layton case CEPH_OSD_OP_SPARSE_READ: 4055476492fSAlex Elder case CEPH_OSD_OP_WRITE: 406e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 407a679e50fSJeff Layton kfree(op->extent.sparse_ext); 4085476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 4095476492fSAlex Elder break; 4105476492fSAlex Elder case CEPH_OSD_OP_CALL: 4115476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 41204017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 4135476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 4145476492fSAlex Elder break; 415d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 416d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 417d74b50beSYan, Zheng ceph_osd_data_release(&op->xattr.osd_data); 418d74b50beSYan, Zheng break; 41966ba609fSYan, Zheng case CEPH_OSD_OP_STAT: 42066ba609fSYan, Zheng ceph_osd_data_release(&op->raw_data_in); 42166ba609fSYan, Zheng break; 422922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 423922dab61SIlya Dryomov ceph_osd_data_release(&op->notify_ack.request_data); 424922dab61SIlya Dryomov break; 42519079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 42619079203SIlya Dryomov ceph_osd_data_release(&op->notify.request_data); 42719079203SIlya Dryomov ceph_osd_data_release(&op->notify.response_data); 42819079203SIlya Dryomov break; 429a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 430a4ed38d7SDouglas Fuller ceph_osd_data_release(&op->list_watchers.response_data); 431a4ed38d7SDouglas Fuller break; 43278beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 43323ddf9beSLuis Henriques ceph_osd_data_release(&op->copy_from.osd_data); 43423ddf9beSLuis Henriques break; 4355476492fSAlex Elder default: 4365476492fSAlex Elder break; 4375476492fSAlex Elder } 438c54d47bfSAlex Elder } 439c54d47bfSAlex Elder 4403d14c5d2SYehuda Sadeh /* 44163244fa1SIlya Dryomov * Assumes @t is zero-initialized. 44263244fa1SIlya Dryomov */ 44363244fa1SIlya Dryomov static void target_init(struct ceph_osd_request_target *t) 44463244fa1SIlya Dryomov { 44563244fa1SIlya Dryomov ceph_oid_init(&t->base_oid); 44663244fa1SIlya Dryomov ceph_oloc_init(&t->base_oloc); 44763244fa1SIlya Dryomov ceph_oid_init(&t->target_oid); 44863244fa1SIlya Dryomov ceph_oloc_init(&t->target_oloc); 44963244fa1SIlya Dryomov 45063244fa1SIlya Dryomov ceph_osds_init(&t->acting); 45163244fa1SIlya Dryomov ceph_osds_init(&t->up); 45263244fa1SIlya Dryomov t->size = -1; 45363244fa1SIlya Dryomov t->min_size = -1; 45463244fa1SIlya Dryomov 45563244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 45663244fa1SIlya Dryomov } 45763244fa1SIlya Dryomov 458922dab61SIlya Dryomov static void target_copy(struct ceph_osd_request_target *dest, 459922dab61SIlya Dryomov const struct ceph_osd_request_target *src) 460922dab61SIlya Dryomov { 461922dab61SIlya Dryomov ceph_oid_copy(&dest->base_oid, &src->base_oid); 462922dab61SIlya Dryomov ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); 463922dab61SIlya Dryomov ceph_oid_copy(&dest->target_oid, &src->target_oid); 464922dab61SIlya Dryomov ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); 465922dab61SIlya Dryomov 466922dab61SIlya Dryomov dest->pgid = src->pgid; /* struct */ 467dc98ff72SIlya Dryomov dest->spgid = src->spgid; /* struct */ 468922dab61SIlya Dryomov dest->pg_num = src->pg_num; 469922dab61SIlya Dryomov dest->pg_num_mask = src->pg_num_mask; 470922dab61SIlya Dryomov ceph_osds_copy(&dest->acting, &src->acting); 471922dab61SIlya Dryomov ceph_osds_copy(&dest->up, &src->up); 472922dab61SIlya Dryomov dest->size = src->size; 473922dab61SIlya Dryomov dest->min_size = src->min_size; 474922dab61SIlya Dryomov dest->sort_bitwise = src->sort_bitwise; 4752f3fead6SIlya Dryomov dest->recovery_deletes = src->recovery_deletes; 476922dab61SIlya Dryomov 477922dab61SIlya Dryomov dest->flags = src->flags; 4787ed286f3SIlya Dryomov dest->used_replica = src->used_replica; 479922dab61SIlya Dryomov dest->paused = src->paused; 480922dab61SIlya Dryomov 48104c7d789SIlya Dryomov dest->epoch = src->epoch; 482dc93e0e2SIlya Dryomov dest->last_force_resend = src->last_force_resend; 483dc93e0e2SIlya Dryomov 484922dab61SIlya Dryomov dest->osd = src->osd; 485922dab61SIlya Dryomov } 486922dab61SIlya Dryomov 48763244fa1SIlya Dryomov static void target_destroy(struct ceph_osd_request_target *t) 48863244fa1SIlya Dryomov { 48963244fa1SIlya Dryomov ceph_oid_destroy(&t->base_oid); 49030c156d9SYan, Zheng ceph_oloc_destroy(&t->base_oloc); 49163244fa1SIlya Dryomov ceph_oid_destroy(&t->target_oid); 49230c156d9SYan, Zheng ceph_oloc_destroy(&t->target_oloc); 49363244fa1SIlya Dryomov } 49463244fa1SIlya Dryomov 49563244fa1SIlya Dryomov /* 4963d14c5d2SYehuda Sadeh * requests 4973d14c5d2SYehuda Sadeh */ 4983540bfdbSIlya Dryomov static void request_release_checks(struct ceph_osd_request *req) 4993540bfdbSIlya Dryomov { 5003540bfdbSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 5014609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node)); 50294e85771SIlya Dryomov WARN_ON(!list_empty(&req->r_private_item)); 5033540bfdbSIlya Dryomov WARN_ON(req->r_osd); 5043540bfdbSIlya Dryomov } 5053540bfdbSIlya Dryomov 5069e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 5073d14c5d2SYehuda Sadeh { 5089e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 5099e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 5105476492fSAlex Elder unsigned int which; 5113d14c5d2SYehuda Sadeh 5129e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 5139e94af20SIlya Dryomov req->r_request, req->r_reply); 5143540bfdbSIlya Dryomov request_release_checks(req); 5159e94af20SIlya Dryomov 5163d14c5d2SYehuda Sadeh if (req->r_request) 5173d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 5185aea3dcdSIlya Dryomov if (req->r_reply) 519ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 5200fff87ecSAlex Elder 5215476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 5225476492fSAlex Elder osd_req_op_data_release(req, which); 5230fff87ecSAlex Elder 524a66dd383SIlya Dryomov target_destroy(&req->r_t); 5253d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 526d30291b9SIlya Dryomov 5273d14c5d2SYehuda Sadeh if (req->r_mempool) 5283d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 5293f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 5305522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 5313f1af42aSIlya Dryomov else 5323f1af42aSIlya Dryomov kfree(req); 5333d14c5d2SYehuda Sadeh } 5349e94af20SIlya Dryomov 5359e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 5369e94af20SIlya Dryomov { 5379e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 5382c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 5399e94af20SIlya Dryomov kref_get(&req->r_kref); 5409e94af20SIlya Dryomov } 5419e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 5429e94af20SIlya Dryomov 5439e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 5449e94af20SIlya Dryomov { 5453ed97d63SIlya Dryomov if (req) { 5469e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 5472c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 5489e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 5499e94af20SIlya Dryomov } 5503ed97d63SIlya Dryomov } 5519e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 5523d14c5d2SYehuda Sadeh 5533540bfdbSIlya Dryomov static void request_init(struct ceph_osd_request *req) 5543540bfdbSIlya Dryomov { 555042f6498SJeff Layton /* req only, each op is zeroed in osd_req_op_init() */ 5563540bfdbSIlya Dryomov memset(req, 0, sizeof(*req)); 5573540bfdbSIlya Dryomov 5583540bfdbSIlya Dryomov kref_init(&req->r_kref); 5593540bfdbSIlya Dryomov init_completion(&req->r_completion); 5603540bfdbSIlya Dryomov RB_CLEAR_NODE(&req->r_node); 5614609245eSIlya Dryomov RB_CLEAR_NODE(&req->r_mc_node); 56294e85771SIlya Dryomov INIT_LIST_HEAD(&req->r_private_item); 5633540bfdbSIlya Dryomov 5643540bfdbSIlya Dryomov target_init(&req->r_t); 5653540bfdbSIlya Dryomov } 5663540bfdbSIlya Dryomov 5673d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 5683d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5691b83bef2SSage Weil unsigned int num_ops, 5703d14c5d2SYehuda Sadeh bool use_mempool, 57154a54007SAlex Elder gfp_t gfp_flags) 5723d14c5d2SYehuda Sadeh { 5733d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5743d14c5d2SYehuda Sadeh 5753d14c5d2SYehuda Sadeh if (use_mempool) { 5763f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 5773d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 5783f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 5793f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 5803d14c5d2SYehuda Sadeh } else { 5813f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 582acafe7e3SKees Cook req = kmalloc(struct_size(req, r_ops, num_ops), gfp_flags); 5833d14c5d2SYehuda Sadeh } 5843f1af42aSIlya Dryomov if (unlikely(!req)) 5853d14c5d2SYehuda Sadeh return NULL; 5863d14c5d2SYehuda Sadeh 5873540bfdbSIlya Dryomov request_init(req); 5883d14c5d2SYehuda Sadeh req->r_osdc = osdc; 5893d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 59079528734SAlex Elder req->r_num_ops = num_ops; 59184127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 59284127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 5933d14c5d2SYehuda Sadeh 59413d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 59513d1ad16SIlya Dryomov return req; 5963f1af42aSIlya Dryomov } 59713d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 5983f1af42aSIlya Dryomov 5992e59ffd1SIlya Dryomov static int ceph_oloc_encoding_size(const struct ceph_object_locator *oloc) 60030c156d9SYan, Zheng { 60130c156d9SYan, Zheng return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0); 60230c156d9SYan, Zheng } 60330c156d9SYan, Zheng 6040d9c1ab3SIlya Dryomov static int __ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp, 6050d9c1ab3SIlya Dryomov int num_request_data_items, 6060d9c1ab3SIlya Dryomov int num_reply_data_items) 60713d1ad16SIlya Dryomov { 60813d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 60913d1ad16SIlya Dryomov struct ceph_msg *msg; 61013d1ad16SIlya Dryomov int msg_size; 6113d14c5d2SYehuda Sadeh 6120d9c1ab3SIlya Dryomov WARN_ON(req->r_request || req->r_reply); 613d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 61430c156d9SYan, Zheng WARN_ON(ceph_oloc_empty(&req->r_base_oloc)); 615d30291b9SIlya Dryomov 61613d1ad16SIlya Dryomov /* create request message */ 6178cb441c0SIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 6188cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 6198cb441c0SIlya Dryomov msg_size += 4 + 4 + 4; /* hash, osdmap_epoch, flags */ 6208cb441c0SIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 6218cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid); /* reqid */ 6228cb441c0SIlya Dryomov msg_size += sizeof(struct ceph_blkin_trace_info); /* trace */ 6238cb441c0SIlya Dryomov msg_size += 4 + sizeof(struct ceph_timespec); /* client_inc, mtime */ 62430c156d9SYan, Zheng msg_size += CEPH_ENCODING_START_BLK_LEN + 62530c156d9SYan, Zheng ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */ 62613d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 62713d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 628ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 629ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 63013d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 6318cb441c0SIlya Dryomov msg_size += 4 + 8; /* retry_attempt, features */ 632ae458f5aSIlya Dryomov 63313d1ad16SIlya Dryomov if (req->r_mempool) 6340d9c1ab3SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op, msg_size, 6350d9c1ab3SIlya Dryomov num_request_data_items); 6363d14c5d2SYehuda Sadeh else 6370d9c1ab3SIlya Dryomov msg = ceph_msg_new2(CEPH_MSG_OSD_OP, msg_size, 6380d9c1ab3SIlya Dryomov num_request_data_items, gfp, true); 63913d1ad16SIlya Dryomov if (!msg) 64013d1ad16SIlya Dryomov return -ENOMEM; 6413d14c5d2SYehuda Sadeh 6423d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 6433d14c5d2SYehuda Sadeh req->r_request = msg; 6443d14c5d2SYehuda Sadeh 64513d1ad16SIlya Dryomov /* create reply message */ 64613d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 647711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 648711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 64913d1ad16SIlya Dryomov 65013d1ad16SIlya Dryomov if (req->r_mempool) 6510d9c1ab3SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, msg_size, 6520d9c1ab3SIlya Dryomov num_reply_data_items); 65313d1ad16SIlya Dryomov else 6540d9c1ab3SIlya Dryomov msg = ceph_msg_new2(CEPH_MSG_OSD_OPREPLY, msg_size, 6550d9c1ab3SIlya Dryomov num_reply_data_items, gfp, true); 65613d1ad16SIlya Dryomov if (!msg) 65713d1ad16SIlya Dryomov return -ENOMEM; 65813d1ad16SIlya Dryomov 65913d1ad16SIlya Dryomov req->r_reply = msg; 66013d1ad16SIlya Dryomov 66113d1ad16SIlya Dryomov return 0; 66213d1ad16SIlya Dryomov } 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 6750d9c1ab3SIlya Dryomov static void get_num_data_items(struct ceph_osd_request *req, 6760d9c1ab3SIlya Dryomov int *num_request_data_items, 6770d9c1ab3SIlya Dryomov int *num_reply_data_items) 6780d9c1ab3SIlya Dryomov { 6790d9c1ab3SIlya Dryomov struct ceph_osd_req_op *op; 6800d9c1ab3SIlya Dryomov 6810d9c1ab3SIlya Dryomov *num_request_data_items = 0; 6820d9c1ab3SIlya Dryomov *num_reply_data_items = 0; 6830d9c1ab3SIlya Dryomov 6840d9c1ab3SIlya Dryomov for (op = req->r_ops; op != &req->r_ops[req->r_num_ops]; op++) { 6850d9c1ab3SIlya Dryomov switch (op->op) { 6860d9c1ab3SIlya Dryomov /* request */ 6870d9c1ab3SIlya Dryomov case CEPH_OSD_OP_WRITE: 6880d9c1ab3SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 6890d9c1ab3SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 6900d9c1ab3SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 6910d9c1ab3SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 69278beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 6930d9c1ab3SIlya Dryomov *num_request_data_items += 1; 6940d9c1ab3SIlya Dryomov break; 6950d9c1ab3SIlya Dryomov 6960d9c1ab3SIlya Dryomov /* reply */ 6970d9c1ab3SIlya Dryomov case CEPH_OSD_OP_STAT: 6980d9c1ab3SIlya Dryomov case CEPH_OSD_OP_READ: 699f628d799SJeff Layton case CEPH_OSD_OP_SPARSE_READ: 7000d9c1ab3SIlya Dryomov case CEPH_OSD_OP_LIST_WATCHERS: 7010d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 7020d9c1ab3SIlya Dryomov break; 7030d9c1ab3SIlya Dryomov 7040d9c1ab3SIlya Dryomov /* both */ 7050d9c1ab3SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 7060d9c1ab3SIlya Dryomov *num_request_data_items += 1; 7070d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 7080d9c1ab3SIlya Dryomov break; 7090d9c1ab3SIlya Dryomov case CEPH_OSD_OP_CALL: 7100d9c1ab3SIlya Dryomov *num_request_data_items += 2; 7110d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 7120d9c1ab3SIlya Dryomov break; 7130d9c1ab3SIlya Dryomov 7140d9c1ab3SIlya Dryomov default: 7150d9c1ab3SIlya Dryomov WARN_ON(!osd_req_opcode_valid(op->op)); 7160d9c1ab3SIlya Dryomov break; 7170d9c1ab3SIlya Dryomov } 7180d9c1ab3SIlya Dryomov } 7190d9c1ab3SIlya Dryomov } 7200d9c1ab3SIlya Dryomov 7210d9c1ab3SIlya Dryomov /* 7220d9c1ab3SIlya Dryomov * oid, oloc and OSD op opcode(s) must be filled in before this function 7230d9c1ab3SIlya Dryomov * is called. 7240d9c1ab3SIlya Dryomov */ 7250d9c1ab3SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 7260d9c1ab3SIlya Dryomov { 7270d9c1ab3SIlya Dryomov int num_request_data_items, num_reply_data_items; 7280d9c1ab3SIlya Dryomov 7290d9c1ab3SIlya Dryomov get_num_data_items(req, &num_request_data_items, &num_reply_data_items); 7300d9c1ab3SIlya Dryomov return __ceph_osdc_alloc_messages(req, gfp, num_request_data_items, 7310d9c1ab3SIlya Dryomov num_reply_data_items); 7320d9c1ab3SIlya Dryomov } 7330d9c1ab3SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 7340d9c1ab3SIlya Dryomov 73533803f33SAlex Elder /* 73633803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 73733803f33SAlex Elder * other information associated with them. It also serves as a 73833803f33SAlex Elder * common init routine for all the other init functions, below. 73933803f33SAlex Elder */ 740042f6498SJeff Layton struct ceph_osd_req_op * 741042f6498SJeff Layton osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 742144cba14SYan, Zheng u16 opcode, u32 flags) 74333803f33SAlex Elder { 744c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 745c99d2d4aSAlex Elder 746c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 74733803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 74833803f33SAlex Elder 749c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 75033803f33SAlex Elder memset(op, 0, sizeof (*op)); 75133803f33SAlex Elder op->op = opcode; 752144cba14SYan, Zheng op->flags = flags; 753c99d2d4aSAlex Elder 754c99d2d4aSAlex Elder return op; 75533803f33SAlex Elder } 75649719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 75749719778SAlex Elder 758c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 759c99d2d4aSAlex Elder unsigned int which, u16 opcode, 76033803f33SAlex Elder u64 offset, u64 length, 76133803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 76233803f33SAlex Elder { 763042f6498SJeff Layton struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, 764144cba14SYan, Zheng opcode, 0); 76533803f33SAlex Elder size_t payload_len = 0; 76633803f33SAlex Elder 767ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 768e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 769f628d799SJeff Layton opcode != CEPH_OSD_OP_TRUNCATE && opcode != CEPH_OSD_OP_SPARSE_READ); 77033803f33SAlex Elder 77133803f33SAlex Elder op->extent.offset = offset; 77233803f33SAlex Elder op->extent.length = length; 77333803f33SAlex Elder op->extent.truncate_size = truncate_size; 77433803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 775e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 77633803f33SAlex Elder payload_len += length; 77733803f33SAlex Elder 778de2aa102SIlya Dryomov op->indata_len = payload_len; 77933803f33SAlex Elder } 78033803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 78133803f33SAlex Elder 782c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 783c99d2d4aSAlex Elder unsigned int which, u64 length) 784e5975c7cSAlex Elder { 785c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 786c99d2d4aSAlex Elder u64 previous; 787c99d2d4aSAlex Elder 788c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 789c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 790c99d2d4aSAlex Elder previous = op->extent.length; 791e5975c7cSAlex Elder 792e5975c7cSAlex Elder if (length == previous) 793e5975c7cSAlex Elder return; /* Nothing to do */ 794e5975c7cSAlex Elder BUG_ON(length > previous); 795e5975c7cSAlex Elder 796e5975c7cSAlex Elder op->extent.length = length; 797d641df81SYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 798de2aa102SIlya Dryomov op->indata_len -= previous - length; 799e5975c7cSAlex Elder } 800e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 801e5975c7cSAlex Elder 8022c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 8032c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 8042c63f49aSYan, Zheng { 8052c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 8062c63f49aSYan, Zheng 8072c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 8082c63f49aSYan, Zheng 8092c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 810042f6498SJeff Layton op = osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 8112c63f49aSYan, Zheng /* dup previous one */ 8122c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 8132c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 8142c63f49aSYan, Zheng op->extent = prev_op->extent; 8152c63f49aSYan, Zheng /* adjust offset */ 8162c63f49aSYan, Zheng op->extent.offset += offset_inc; 8172c63f49aSYan, Zheng op->extent.length -= offset_inc; 8182c63f49aSYan, Zheng 8192c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 8202c63f49aSYan, Zheng op->indata_len -= offset_inc; 8212c63f49aSYan, Zheng } 8222c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 8232c63f49aSYan, Zheng 824fe943d50SChengguang Xu int osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 82524639ce5SIlya Dryomov const char *class, const char *method) 82633803f33SAlex Elder { 82724639ce5SIlya Dryomov struct ceph_osd_req_op *op; 8285f562df5SAlex Elder struct ceph_pagelist *pagelist; 82933803f33SAlex Elder size_t payload_len = 0; 83033803f33SAlex Elder size_t size; 8314766815bSDavid Disseldorp int ret; 83233803f33SAlex Elder 833042f6498SJeff Layton op = osd_req_op_init(osd_req, which, CEPH_OSD_OP_CALL, 0); 83433803f33SAlex Elder 83533165d47SIlya Dryomov pagelist = ceph_pagelist_alloc(GFP_NOFS); 836fe943d50SChengguang Xu if (!pagelist) 837fe943d50SChengguang Xu return -ENOMEM; 838fe943d50SChengguang Xu 83933803f33SAlex Elder op->cls.class_name = class; 84033803f33SAlex Elder size = strlen(class); 84133803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 84233803f33SAlex Elder op->cls.class_len = size; 8434766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, class, size); 8444766815bSDavid Disseldorp if (ret) 8454766815bSDavid Disseldorp goto err_pagelist_free; 84633803f33SAlex Elder payload_len += size; 84733803f33SAlex Elder 84833803f33SAlex Elder op->cls.method_name = method; 84933803f33SAlex Elder size = strlen(method); 85033803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 85133803f33SAlex Elder op->cls.method_len = size; 8524766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, method, size); 8534766815bSDavid Disseldorp if (ret) 8544766815bSDavid Disseldorp goto err_pagelist_free; 85533803f33SAlex Elder payload_len += size; 85633803f33SAlex Elder 857a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 858de2aa102SIlya Dryomov op->indata_len = payload_len; 859fe943d50SChengguang Xu return 0; 8604766815bSDavid Disseldorp 8614766815bSDavid Disseldorp err_pagelist_free: 8624766815bSDavid Disseldorp ceph_pagelist_release(pagelist); 8634766815bSDavid Disseldorp return ret; 86433803f33SAlex Elder } 86533803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 8668c042b0dSAlex Elder 867d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 868d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 869d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 870d74b50beSYan, Zheng { 871042f6498SJeff Layton struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, 872144cba14SYan, Zheng opcode, 0); 873d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 874d74b50beSYan, Zheng size_t payload_len; 8754766815bSDavid Disseldorp int ret; 876d74b50beSYan, Zheng 877d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 878d74b50beSYan, Zheng 87933165d47SIlya Dryomov pagelist = ceph_pagelist_alloc(GFP_NOFS); 880d74b50beSYan, Zheng if (!pagelist) 881d74b50beSYan, Zheng return -ENOMEM; 882d74b50beSYan, Zheng 883d74b50beSYan, Zheng payload_len = strlen(name); 884d74b50beSYan, Zheng op->xattr.name_len = payload_len; 8854766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, name, payload_len); 8864766815bSDavid Disseldorp if (ret) 8874766815bSDavid Disseldorp goto err_pagelist_free; 888d74b50beSYan, Zheng 889d74b50beSYan, Zheng op->xattr.value_len = size; 8904766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, value, size); 8914766815bSDavid Disseldorp if (ret) 8924766815bSDavid Disseldorp goto err_pagelist_free; 893d74b50beSYan, Zheng payload_len += size; 894d74b50beSYan, Zheng 895d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 896d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 897d74b50beSYan, Zheng 898d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 899de2aa102SIlya Dryomov op->indata_len = payload_len; 900d74b50beSYan, Zheng return 0; 9014766815bSDavid Disseldorp 9024766815bSDavid Disseldorp err_pagelist_free: 9034766815bSDavid Disseldorp ceph_pagelist_release(pagelist); 9044766815bSDavid Disseldorp return ret; 905d74b50beSYan, Zheng } 906d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 907d74b50beSYan, Zheng 908922dab61SIlya Dryomov /* 909922dab61SIlya Dryomov * @watch_opcode: CEPH_OSD_WATCH_OP_* 910922dab61SIlya Dryomov */ 911922dab61SIlya Dryomov static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, 91275dbb685SIlya Dryomov u8 watch_opcode, u64 cookie, u32 gen) 91333803f33SAlex Elder { 914922dab61SIlya Dryomov struct ceph_osd_req_op *op; 91533803f33SAlex Elder 916042f6498SJeff Layton op = osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); 91733803f33SAlex Elder op->watch.cookie = cookie; 918922dab61SIlya Dryomov op->watch.op = watch_opcode; 91975dbb685SIlya Dryomov op->watch.gen = gen; 92075dbb685SIlya Dryomov } 92175dbb685SIlya Dryomov 92275dbb685SIlya Dryomov /* 92375dbb685SIlya Dryomov * prot_ver, timeout and notify payload (may be empty) should already be 92475dbb685SIlya Dryomov * encoded in @request_pl 92575dbb685SIlya Dryomov */ 92675dbb685SIlya Dryomov static void osd_req_op_notify_init(struct ceph_osd_request *req, int which, 92775dbb685SIlya Dryomov u64 cookie, struct ceph_pagelist *request_pl) 92875dbb685SIlya Dryomov { 92975dbb685SIlya Dryomov struct ceph_osd_req_op *op; 93075dbb685SIlya Dryomov 93175dbb685SIlya Dryomov op = osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); 93275dbb685SIlya Dryomov op->notify.cookie = cookie; 93375dbb685SIlya Dryomov 93475dbb685SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify.request_data, request_pl); 93575dbb685SIlya Dryomov op->indata_len = request_pl->length; 93633803f33SAlex Elder } 93733803f33SAlex Elder 938d3798accSIlya Dryomov /* 939d3798accSIlya Dryomov * @flags: CEPH_OSD_OP_ALLOC_HINT_FLAG_* 940d3798accSIlya Dryomov */ 941c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 942c647b8a8SIlya Dryomov unsigned int which, 943c647b8a8SIlya Dryomov u64 expected_object_size, 944d3798accSIlya Dryomov u64 expected_write_size, 945d3798accSIlya Dryomov u32 flags) 946c647b8a8SIlya Dryomov { 947042f6498SJeff Layton struct ceph_osd_req_op *op; 948c647b8a8SIlya Dryomov 949042f6498SJeff Layton op = osd_req_op_init(osd_req, which, CEPH_OSD_OP_SETALLOCHINT, 0); 950c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 951c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 952d3798accSIlya Dryomov op->alloc_hint.flags = flags; 953c647b8a8SIlya Dryomov 954c647b8a8SIlya Dryomov /* 955c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 956c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 957c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 958c647b8a8SIlya Dryomov */ 959c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 960c647b8a8SIlya Dryomov } 961c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 962c647b8a8SIlya Dryomov 96390af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 964ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 965ec9123c5SAlex Elder { 966ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 967ec9123c5SAlex Elder 968ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 969ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 970ec9123c5SAlex Elder if (length) 97190af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 972e8862740SIlya Dryomov length, osd_data->alignment, false); 973ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 974ec9123c5SAlex Elder BUG_ON(!length); 97590af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 976ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 977ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 9785359a17dSIlya Dryomov ceph_msg_data_add_bio(msg, &osd_data->bio_pos, length); 979ec9123c5SAlex Elder #endif 980b9e281c2SIlya Dryomov } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BVECS) { 981b9e281c2SIlya Dryomov ceph_msg_data_add_bvecs(msg, &osd_data->bvec_pos); 982dee0c5f8SJeff Layton } else if (osd_data->type == CEPH_OSD_DATA_TYPE_ITER) { 983dee0c5f8SJeff Layton ceph_msg_data_add_iter(msg, &osd_data->iter); 984ec9123c5SAlex Elder } else { 985ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 986ec9123c5SAlex Elder } 987ec9123c5SAlex Elder } 988ec9123c5SAlex Elder 989bb873b53SIlya Dryomov static u32 osd_req_encode_op(struct ceph_osd_op *dst, 990bb873b53SIlya Dryomov const struct ceph_osd_req_op *src) 9913d14c5d2SYehuda Sadeh { 992065a68f9SAlex Elder switch (src->op) { 993fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 994fbfab539SAlex Elder break; 9953d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 996f628d799SJeff Layton case CEPH_OSD_OP_SPARSE_READ: 9973d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 998e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 999ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 1000ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 1001175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 1002175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 10033d14c5d2SYehuda Sadeh dst->extent.truncate_size = 10043d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 10053d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 10063d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 10073d14c5d2SYehuda Sadeh break; 10083d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 10093d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 10103d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 1011bb873b53SIlya Dryomov dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 10123d14c5d2SYehuda Sadeh break; 1013a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 1014a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 1015922dab61SIlya Dryomov dst->watch.ver = cpu_to_le64(0); 1016922dab61SIlya Dryomov dst->watch.op = src->watch.op; 1017922dab61SIlya Dryomov dst->watch.gen = cpu_to_le32(src->watch.gen); 1018922dab61SIlya Dryomov break; 1019922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 1020a40c4f10SYehuda Sadeh break; 102119079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 102219079203SIlya Dryomov dst->notify.cookie = cpu_to_le64(src->notify.cookie); 102319079203SIlya Dryomov break; 1024a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 1025a4ed38d7SDouglas Fuller break; 1026c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 1027c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 1028c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 1029c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 1030c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 1031d3798accSIlya Dryomov dst->alloc_hint.flags = cpu_to_le32(src->alloc_hint.flags); 1032c647b8a8SIlya Dryomov break; 1033d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 1034d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 1035d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 1036d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 1037d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 1038d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 1039d74b50beSYan, Zheng break; 1040864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 1041864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 1042864e9197SYan, Zheng break; 104378beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 104423ddf9beSLuis Henriques dst->copy_from.snapid = cpu_to_le64(src->copy_from.snapid); 104523ddf9beSLuis Henriques dst->copy_from.src_version = 104623ddf9beSLuis Henriques cpu_to_le64(src->copy_from.src_version); 104723ddf9beSLuis Henriques dst->copy_from.flags = src->copy_from.flags; 104823ddf9beSLuis Henriques dst->copy_from.src_fadvise_flags = 104923ddf9beSLuis Henriques cpu_to_le32(src->copy_from.src_fadvise_flags); 105023ddf9beSLuis Henriques break; 1051*69dd3b39SJeff Layton case CEPH_OSD_OP_ASSERT_VER: 1052*69dd3b39SJeff Layton dst->assert_ver.unused = cpu_to_le64(0); 1053*69dd3b39SJeff Layton dst->assert_ver.ver = cpu_to_le64(src->assert_ver.ver); 1054*69dd3b39SJeff Layton break; 10553d14c5d2SYehuda Sadeh default: 10564c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 10578f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 10584c46459cSAlex Elder WARN_ON(1); 1059a8dd0a37SAlex Elder 1060a8dd0a37SAlex Elder return 0; 10613d14c5d2SYehuda Sadeh } 10627b25bf5fSIlya Dryomov 1063a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 10647b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 1065de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 1066175face2SAlex Elder 1067bb873b53SIlya Dryomov return src->indata_len; 10683d14c5d2SYehuda Sadeh } 10693d14c5d2SYehuda Sadeh 10703d14c5d2SYehuda Sadeh /* 10713d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 10723d14c5d2SYehuda Sadeh * extent as needed. 10733d14c5d2SYehuda Sadeh * 10743d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 10753d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 10763d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 10773d14c5d2SYehuda Sadeh */ 10783d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 10793d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 10803d14c5d2SYehuda Sadeh struct ceph_vino vino, 1081715e4cd4SYan, Zheng u64 off, u64 *plen, 1082715e4cd4SYan, Zheng unsigned int which, int num_ops, 10833d14c5d2SYehuda Sadeh int opcode, int flags, 10843d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 10853d14c5d2SYehuda Sadeh u32 truncate_seq, 10863d14c5d2SYehuda Sadeh u64 truncate_size, 1087153e5167SAlex Elder bool use_mempool) 10883d14c5d2SYehuda Sadeh { 10893d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 109075d1c941SAlex Elder u64 objnum = 0; 109175d1c941SAlex Elder u64 objoff = 0; 109275d1c941SAlex Elder u64 objlen = 0; 10936816282dSSage Weil int r; 10943d14c5d2SYehuda Sadeh 1095ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 1096864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 1097f628d799SJeff Layton opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE && 1098f628d799SJeff Layton opcode != CEPH_OSD_OP_SPARSE_READ); 10993d14c5d2SYehuda Sadeh 1100acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 1101ae7ca4a3SAlex Elder GFP_NOFS); 110213d1ad16SIlya Dryomov if (!req) { 110313d1ad16SIlya Dryomov r = -ENOMEM; 110413d1ad16SIlya Dryomov goto fail; 110513d1ad16SIlya Dryomov } 110679528734SAlex Elder 11073d14c5d2SYehuda Sadeh /* calculate max write size */ 1108a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 110913d1ad16SIlya Dryomov if (r) 111013d1ad16SIlya Dryomov goto fail; 1111a19dadfbSAlex Elder 1112864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 1113144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 1114864e9197SYan, Zheng } else { 11157627151eSYan, Zheng u32 object_size = layout->object_size; 1116864e9197SYan, Zheng u32 object_base = off - objoff; 1117ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 1118d18d1e28SAlex Elder if (truncate_size <= object_base) { 1119d18d1e28SAlex Elder truncate_size = 0; 1120d18d1e28SAlex Elder } else { 1121d18d1e28SAlex Elder truncate_size -= object_base; 1122d18d1e28SAlex Elder if (truncate_size > object_size) 1123d18d1e28SAlex Elder truncate_size = object_size; 1124d18d1e28SAlex Elder } 1125ccca4e37SYan, Zheng } 1126715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 1127b0270324SAlex Elder truncate_size, truncate_seq); 1128864e9197SYan, Zheng } 1129d18d1e28SAlex Elder 11307627151eSYan, Zheng req->r_base_oloc.pool = layout->pool_id; 113130c156d9SYan, Zheng req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns); 1132d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 113322d2cfdfSIlya Dryomov req->r_flags = flags | osdc->client->options->read_from_replica; 1134dbe0fc41SAlex Elder 1135bb873b53SIlya Dryomov req->r_snapid = vino.snap; 1136bb873b53SIlya Dryomov if (flags & CEPH_OSD_FLAG_WRITE) 1137bb873b53SIlya Dryomov req->r_data_offset = off; 1138bb873b53SIlya Dryomov 11390d9c1ab3SIlya Dryomov if (num_ops > 1) 11400d9c1ab3SIlya Dryomov /* 11410d9c1ab3SIlya Dryomov * This is a special case for ceph_writepages_start(), but it 11420d9c1ab3SIlya Dryomov * also covers ceph_uninline_data(). If more multi-op request 11430d9c1ab3SIlya Dryomov * use cases emerge, we will need a separate helper. 11440d9c1ab3SIlya Dryomov */ 11450d9c1ab3SIlya Dryomov r = __ceph_osdc_alloc_messages(req, GFP_NOFS, num_ops, 0); 11460d9c1ab3SIlya Dryomov else 114713d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 114813d1ad16SIlya Dryomov if (r) 114913d1ad16SIlya Dryomov goto fail; 115013d1ad16SIlya Dryomov 11513d14c5d2SYehuda Sadeh return req; 115213d1ad16SIlya Dryomov 115313d1ad16SIlya Dryomov fail: 115413d1ad16SIlya Dryomov ceph_osdc_put_request(req); 115513d1ad16SIlya Dryomov return ERR_PTR(r); 11563d14c5d2SYehuda Sadeh } 11573d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 11583d14c5d2SYehuda Sadeh 1159a679e50fSJeff Layton int __ceph_alloc_sparse_ext_map(struct ceph_osd_req_op *op, int cnt) 1160a679e50fSJeff Layton { 1161a679e50fSJeff Layton op->extent.sparse_ext_cnt = cnt; 1162a679e50fSJeff Layton op->extent.sparse_ext = kmalloc_array(cnt, 1163a679e50fSJeff Layton sizeof(*op->extent.sparse_ext), 1164a679e50fSJeff Layton GFP_NOFS); 1165a679e50fSJeff Layton if (!op->extent.sparse_ext) 1166a679e50fSJeff Layton return -ENOMEM; 1167a679e50fSJeff Layton return 0; 1168a679e50fSJeff Layton } 1169a679e50fSJeff Layton EXPORT_SYMBOL(__ceph_alloc_sparse_ext_map); 1170a679e50fSJeff Layton 11713d14c5d2SYehuda Sadeh /* 11723d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 11733d14c5d2SYehuda Sadeh */ 1174fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 11754609245eSIlya Dryomov DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) 11763d14c5d2SYehuda Sadeh 117766850df5SIlya Dryomov /* 117866850df5SIlya Dryomov * Call @fn on each OSD request as long as @fn returns 0. 117966850df5SIlya Dryomov */ 118066850df5SIlya Dryomov static void for_each_request(struct ceph_osd_client *osdc, 118166850df5SIlya Dryomov int (*fn)(struct ceph_osd_request *req, void *arg), 118266850df5SIlya Dryomov void *arg) 118366850df5SIlya Dryomov { 118466850df5SIlya Dryomov struct rb_node *n, *p; 118566850df5SIlya Dryomov 118666850df5SIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 118766850df5SIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 118866850df5SIlya Dryomov 118966850df5SIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 119066850df5SIlya Dryomov struct ceph_osd_request *req = 119166850df5SIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 119266850df5SIlya Dryomov 119366850df5SIlya Dryomov p = rb_next(p); 119466850df5SIlya Dryomov if (fn(req, arg)) 119566850df5SIlya Dryomov return; 119666850df5SIlya Dryomov } 119766850df5SIlya Dryomov } 119866850df5SIlya Dryomov 119966850df5SIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 120066850df5SIlya Dryomov struct ceph_osd_request *req = 120166850df5SIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 120266850df5SIlya Dryomov 120366850df5SIlya Dryomov p = rb_next(p); 120466850df5SIlya Dryomov if (fn(req, arg)) 120566850df5SIlya Dryomov return; 120666850df5SIlya Dryomov } 120766850df5SIlya Dryomov } 120866850df5SIlya Dryomov 12090247a0cfSIlya Dryomov static bool osd_homeless(struct ceph_osd *osd) 12100247a0cfSIlya Dryomov { 12110247a0cfSIlya Dryomov return osd->o_osd == CEPH_HOMELESS_OSD; 12120247a0cfSIlya Dryomov } 12130247a0cfSIlya Dryomov 12145aea3dcdSIlya Dryomov static bool osd_registered(struct ceph_osd *osd) 12153d14c5d2SYehuda Sadeh { 12165aea3dcdSIlya Dryomov verify_osdc_locked(osd->o_osdc); 12173d14c5d2SYehuda Sadeh 12185aea3dcdSIlya Dryomov return !RB_EMPTY_NODE(&osd->o_node); 12193d14c5d2SYehuda Sadeh } 12203d14c5d2SYehuda Sadeh 12213d14c5d2SYehuda Sadeh /* 12220247a0cfSIlya Dryomov * Assumes @osd is zero-initialized. 12230247a0cfSIlya Dryomov */ 12240247a0cfSIlya Dryomov static void osd_init(struct ceph_osd *osd) 12250247a0cfSIlya Dryomov { 122602113a0fSElena Reshetova refcount_set(&osd->o_ref, 1); 12270247a0cfSIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 122808b8a044SJeff Layton spin_lock_init(&osd->o_requests_lock); 12295aea3dcdSIlya Dryomov osd->o_requests = RB_ROOT; 1230922dab61SIlya Dryomov osd->o_linger_requests = RB_ROOT; 1231a02a946dSIlya Dryomov osd->o_backoff_mappings = RB_ROOT; 1232a02a946dSIlya Dryomov osd->o_backoffs_by_id = RB_ROOT; 12330247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_osd_lru); 12340247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_keepalive_item); 12350247a0cfSIlya Dryomov osd->o_incarnation = 1; 12365aea3dcdSIlya Dryomov mutex_init(&osd->lock); 12370247a0cfSIlya Dryomov } 12380247a0cfSIlya Dryomov 1239f628d799SJeff Layton static void ceph_init_sparse_read(struct ceph_sparse_read *sr) 1240f628d799SJeff Layton { 1241f628d799SJeff Layton kfree(sr->sr_extent); 1242f628d799SJeff Layton memset(sr, '\0', sizeof(*sr)); 1243f628d799SJeff Layton sr->sr_state = CEPH_SPARSE_READ_HDR; 1244f628d799SJeff Layton } 1245f628d799SJeff Layton 12460247a0cfSIlya Dryomov static void osd_cleanup(struct ceph_osd *osd) 12470247a0cfSIlya Dryomov { 12480247a0cfSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); 12495aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 1250922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 1251a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoff_mappings)); 1252a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoffs_by_id)); 12530247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_osd_lru)); 12540247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_keepalive_item)); 12550247a0cfSIlya Dryomov 1256f628d799SJeff Layton ceph_init_sparse_read(&osd->o_sparse_read); 1257f628d799SJeff Layton 12580247a0cfSIlya Dryomov if (osd->o_auth.authorizer) { 12590247a0cfSIlya Dryomov WARN_ON(osd_homeless(osd)); 12600247a0cfSIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 12610247a0cfSIlya Dryomov } 12620247a0cfSIlya Dryomov } 12630247a0cfSIlya Dryomov 12640247a0cfSIlya Dryomov /* 12653d14c5d2SYehuda Sadeh * Track open sessions with osds. 12663d14c5d2SYehuda Sadeh */ 1267e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 12683d14c5d2SYehuda Sadeh { 12693d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12703d14c5d2SYehuda Sadeh 12710247a0cfSIlya Dryomov WARN_ON(onum == CEPH_HOMELESS_OSD); 12720247a0cfSIlya Dryomov 12737a28f59bSIlya Dryomov osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); 12740247a0cfSIlya Dryomov osd_init(osd); 12753d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1276e10006f8SAlex Elder osd->o_osd = onum; 1277f628d799SJeff Layton osd->o_sparse_op_idx = -1; 1278f628d799SJeff Layton 1279f628d799SJeff Layton ceph_init_sparse_read(&osd->o_sparse_read); 12803d14c5d2SYehuda Sadeh 1281b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 12823d14c5d2SYehuda Sadeh 12833d14c5d2SYehuda Sadeh return osd; 12843d14c5d2SYehuda Sadeh } 12853d14c5d2SYehuda Sadeh 12863d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 12873d14c5d2SYehuda Sadeh { 128802113a0fSElena Reshetova if (refcount_inc_not_zero(&osd->o_ref)) { 128902113a0fSElena Reshetova dout("get_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref)-1, 129002113a0fSElena Reshetova refcount_read(&osd->o_ref)); 12913d14c5d2SYehuda Sadeh return osd; 12923d14c5d2SYehuda Sadeh } else { 12933d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 12943d14c5d2SYehuda Sadeh return NULL; 12953d14c5d2SYehuda Sadeh } 12963d14c5d2SYehuda Sadeh } 12973d14c5d2SYehuda Sadeh 12983d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 12993d14c5d2SYehuda Sadeh { 130002113a0fSElena Reshetova dout("put_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref), 130102113a0fSElena Reshetova refcount_read(&osd->o_ref) - 1); 130202113a0fSElena Reshetova if (refcount_dec_and_test(&osd->o_ref)) { 13030247a0cfSIlya Dryomov osd_cleanup(osd); 13043d14c5d2SYehuda Sadeh kfree(osd); 13053d14c5d2SYehuda Sadeh } 13063d14c5d2SYehuda Sadeh } 13073d14c5d2SYehuda Sadeh 1308fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1309fcd00b68SIlya Dryomov 13109dd2845cSIlya Dryomov static void __move_osd_to_lru(struct ceph_osd *osd) 13113d14c5d2SYehuda Sadeh { 13129dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 13139dd2845cSIlya Dryomov 13149dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 13153d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1316bbf37ec3SIlya Dryomov 13179dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 13183d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 13199dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 13209dd2845cSIlya Dryomov 1321a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 13223d14c5d2SYehuda Sadeh } 13233d14c5d2SYehuda Sadeh 13249dd2845cSIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd *osd) 1325bbf37ec3SIlya Dryomov { 13265aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1327922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) 13289dd2845cSIlya Dryomov __move_osd_to_lru(osd); 1329bbf37ec3SIlya Dryomov } 1330bbf37ec3SIlya Dryomov 13313d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 13323d14c5d2SYehuda Sadeh { 13339dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 13349dd2845cSIlya Dryomov 13359dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 13369dd2845cSIlya Dryomov 13379dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 13383d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 13393d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 13409dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 13413d14c5d2SYehuda Sadeh } 13423d14c5d2SYehuda Sadeh 13433d14c5d2SYehuda Sadeh /* 13445aea3dcdSIlya Dryomov * Close the connection and assign any leftover requests to the 13455aea3dcdSIlya Dryomov * homeless session. 13465aea3dcdSIlya Dryomov */ 13475aea3dcdSIlya Dryomov static void close_osd(struct ceph_osd *osd) 13485aea3dcdSIlya Dryomov { 13495aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 13505aea3dcdSIlya Dryomov struct rb_node *n; 13515aea3dcdSIlya Dryomov 13525aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 13535aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 13545aea3dcdSIlya Dryomov 13555aea3dcdSIlya Dryomov ceph_con_close(&osd->o_con); 13565aea3dcdSIlya Dryomov 13575aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 13585aea3dcdSIlya Dryomov struct ceph_osd_request *req = 13595aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 13605aea3dcdSIlya Dryomov 13615aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 13625aea3dcdSIlya Dryomov 13635aea3dcdSIlya Dryomov dout(" reassigning req %p tid %llu\n", req, req->r_tid); 13645aea3dcdSIlya Dryomov unlink_request(osd, req); 13655aea3dcdSIlya Dryomov link_request(&osdc->homeless_osd, req); 13665aea3dcdSIlya Dryomov } 1367922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 1368922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1369922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 1370922dab61SIlya Dryomov 1371922dab61SIlya Dryomov n = rb_next(n); /* unlink_linger() */ 1372922dab61SIlya Dryomov 1373922dab61SIlya Dryomov dout(" reassigning lreq %p linger_id %llu\n", lreq, 1374922dab61SIlya Dryomov lreq->linger_id); 1375922dab61SIlya Dryomov unlink_linger(osd, lreq); 1376922dab61SIlya Dryomov link_linger(&osdc->homeless_osd, lreq); 1377922dab61SIlya Dryomov } 1378a02a946dSIlya Dryomov clear_backoffs(osd); 13795aea3dcdSIlya Dryomov 13805aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 13815aea3dcdSIlya Dryomov erase_osd(&osdc->osds, osd); 13825aea3dcdSIlya Dryomov put_osd(osd); 13835aea3dcdSIlya Dryomov } 13845aea3dcdSIlya Dryomov 13855aea3dcdSIlya Dryomov /* 13863d14c5d2SYehuda Sadeh * reset osd connect 13873d14c5d2SYehuda Sadeh */ 13885aea3dcdSIlya Dryomov static int reopen_osd(struct ceph_osd *osd) 13893d14c5d2SYehuda Sadeh { 1390c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 13913d14c5d2SYehuda Sadeh 13925aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 13935aea3dcdSIlya Dryomov 13945aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1395922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) { 13965aea3dcdSIlya Dryomov close_osd(osd); 1397c3acb181SAlex Elder return -ENODEV; 1398c3acb181SAlex Elder } 1399c3acb181SAlex Elder 14005aea3dcdSIlya Dryomov peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; 1401c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 14023d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 14035aea3dcdSIlya Dryomov struct rb_node *n; 1404c3acb181SAlex Elder 14053d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 14060b4af2e8SIlya Dryomov "letting msgr retry\n"); 14073d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 14085aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 14095aea3dcdSIlya Dryomov struct ceph_osd_request *req = 14105aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 14113d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 14125aea3dcdSIlya Dryomov } 1413c3acb181SAlex Elder 1414c3acb181SAlex Elder return -EAGAIN; 14153d14c5d2SYehuda Sadeh } 1416c3acb181SAlex Elder 1417c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1418c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1419c3acb181SAlex Elder osd->o_incarnation++; 1420c3acb181SAlex Elder 1421c3acb181SAlex Elder return 0; 14223d14c5d2SYehuda Sadeh } 14233d14c5d2SYehuda Sadeh 14245aea3dcdSIlya Dryomov static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, 14255aea3dcdSIlya Dryomov bool wrlocked) 14263d14c5d2SYehuda Sadeh { 14275aea3dcdSIlya Dryomov struct ceph_osd *osd; 14285aea3dcdSIlya Dryomov 14295aea3dcdSIlya Dryomov if (wrlocked) 14305aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 14315aea3dcdSIlya Dryomov else 14325aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 14335aea3dcdSIlya Dryomov 14345aea3dcdSIlya Dryomov if (o != CEPH_HOMELESS_OSD) 14355aea3dcdSIlya Dryomov osd = lookup_osd(&osdc->osds, o); 14365aea3dcdSIlya Dryomov else 14375aea3dcdSIlya Dryomov osd = &osdc->homeless_osd; 14385aea3dcdSIlya Dryomov if (!osd) { 14395aea3dcdSIlya Dryomov if (!wrlocked) 14405aea3dcdSIlya Dryomov return ERR_PTR(-EAGAIN); 14415aea3dcdSIlya Dryomov 14425aea3dcdSIlya Dryomov osd = create_osd(osdc, o); 14435aea3dcdSIlya Dryomov insert_osd(&osdc->osds, osd); 14445aea3dcdSIlya Dryomov ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, 14455aea3dcdSIlya Dryomov &osdc->osdmap->osd_addr[osd->o_osd]); 14465aea3dcdSIlya Dryomov } 14475aea3dcdSIlya Dryomov 14485aea3dcdSIlya Dryomov dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); 14495aea3dcdSIlya Dryomov return osd; 1450a40c4f10SYehuda Sadeh } 1451a40c4f10SYehuda Sadeh 14523d14c5d2SYehuda Sadeh /* 14535aea3dcdSIlya Dryomov * Create request <-> OSD session relation. 14545aea3dcdSIlya Dryomov * 14555aea3dcdSIlya Dryomov * @req has to be assigned a tid, @osd may be homeless. 14563d14c5d2SYehuda Sadeh */ 14575aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) 14583d14c5d2SYehuda Sadeh { 14595aea3dcdSIlya Dryomov verify_osd_locked(osd); 14605aea3dcdSIlya Dryomov WARN_ON(!req->r_tid || req->r_osd); 14615aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 146235f9f8a0SSage Weil req, req->r_tid); 14635aea3dcdSIlya Dryomov 14645aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 14655aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 14665aea3dcdSIlya Dryomov else 14675aea3dcdSIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 14685aea3dcdSIlya Dryomov 14695aea3dcdSIlya Dryomov get_osd(osd); 147008b8a044SJeff Layton spin_lock(&osd->o_requests_lock); 14715aea3dcdSIlya Dryomov insert_request(&osd->o_requests, req); 147208b8a044SJeff Layton spin_unlock(&osd->o_requests_lock); 14735aea3dcdSIlya Dryomov req->r_osd = osd; 147435f9f8a0SSage Weil } 147535f9f8a0SSage Weil 14765aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) 14773d14c5d2SYehuda Sadeh { 14785aea3dcdSIlya Dryomov verify_osd_locked(osd); 14795aea3dcdSIlya Dryomov WARN_ON(req->r_osd != osd); 14805aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 14815aea3dcdSIlya Dryomov req, req->r_tid); 14825aea3dcdSIlya Dryomov 14835aea3dcdSIlya Dryomov req->r_osd = NULL; 148408b8a044SJeff Layton spin_lock(&osd->o_requests_lock); 14855aea3dcdSIlya Dryomov erase_request(&osd->o_requests, req); 148608b8a044SJeff Layton spin_unlock(&osd->o_requests_lock); 14875aea3dcdSIlya Dryomov put_osd(osd); 14885aea3dcdSIlya Dryomov 14895aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 14905aea3dcdSIlya Dryomov maybe_move_osd_to_lru(osd); 14915aea3dcdSIlya Dryomov else 14925aea3dcdSIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 14933d14c5d2SYehuda Sadeh } 14943d14c5d2SYehuda Sadeh 149563244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 149663244fa1SIlya Dryomov { 149763244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 149863244fa1SIlya Dryomov } 149963244fa1SIlya Dryomov 150042c1b124SIlya Dryomov static bool have_pool_full(struct ceph_osd_client *osdc) 150142c1b124SIlya Dryomov { 150242c1b124SIlya Dryomov struct rb_node *n; 150342c1b124SIlya Dryomov 150442c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 150542c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 150642c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 150742c1b124SIlya Dryomov 150842c1b124SIlya Dryomov if (__pool_full(pi)) 150942c1b124SIlya Dryomov return true; 151042c1b124SIlya Dryomov } 151142c1b124SIlya Dryomov 151242c1b124SIlya Dryomov return false; 151342c1b124SIlya Dryomov } 151442c1b124SIlya Dryomov 15155aea3dcdSIlya Dryomov static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) 15165aea3dcdSIlya Dryomov { 15175aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 15185aea3dcdSIlya Dryomov 15195aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 15205aea3dcdSIlya Dryomov if (!pi) 15215aea3dcdSIlya Dryomov return false; 15225aea3dcdSIlya Dryomov 15235aea3dcdSIlya Dryomov return __pool_full(pi); 15245aea3dcdSIlya Dryomov } 15255aea3dcdSIlya Dryomov 15263d14c5d2SYehuda Sadeh /* 1527d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1528d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1529d29adb34SJosh Durgin */ 153063244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 153163244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 153263244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 153363244fa1SIlya Dryomov { 1534b7ec35b3SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 1535b7ec35b3SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 1536b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 153763244fa1SIlya Dryomov __pool_full(pi); 153863244fa1SIlya Dryomov 15396d637a54SIlya Dryomov WARN_ON(pi->id != t->target_oloc.pool); 154058eb7932SJeff Layton return ((t->flags & CEPH_OSD_FLAG_READ) && pauserd) || 154158eb7932SJeff Layton ((t->flags & CEPH_OSD_FLAG_WRITE) && pausewr) || 154258eb7932SJeff Layton (osdc->osdmap->epoch < osdc->epoch_barrier); 154363244fa1SIlya Dryomov } 154463244fa1SIlya Dryomov 1545117d96a0SIlya Dryomov static int pick_random_replica(const struct ceph_osds *acting) 1546117d96a0SIlya Dryomov { 15478032bf12SJason A. Donenfeld int i = get_random_u32_below(acting->size); 1548117d96a0SIlya Dryomov 1549117d96a0SIlya Dryomov dout("%s picked osd%d, primary osd%d\n", __func__, 1550117d96a0SIlya Dryomov acting->osds[i], acting->primary); 1551117d96a0SIlya Dryomov return i; 1552117d96a0SIlya Dryomov } 1553117d96a0SIlya Dryomov 1554117d96a0SIlya Dryomov /* 1555117d96a0SIlya Dryomov * Picks the closest replica based on client's location given by 1556117d96a0SIlya Dryomov * crush_location option. Prefers the primary if the locality is 1557117d96a0SIlya Dryomov * the same. 1558117d96a0SIlya Dryomov */ 1559117d96a0SIlya Dryomov static int pick_closest_replica(struct ceph_osd_client *osdc, 1560117d96a0SIlya Dryomov const struct ceph_osds *acting) 1561117d96a0SIlya Dryomov { 1562117d96a0SIlya Dryomov struct ceph_options *opt = osdc->client->options; 1563117d96a0SIlya Dryomov int best_i, best_locality; 1564117d96a0SIlya Dryomov int i = 0, locality; 1565117d96a0SIlya Dryomov 1566117d96a0SIlya Dryomov do { 1567117d96a0SIlya Dryomov locality = ceph_get_crush_locality(osdc->osdmap, 1568117d96a0SIlya Dryomov acting->osds[i], 1569117d96a0SIlya Dryomov &opt->crush_locs); 1570117d96a0SIlya Dryomov if (i == 0 || 1571117d96a0SIlya Dryomov (locality >= 0 && best_locality < 0) || 1572117d96a0SIlya Dryomov (locality >= 0 && best_locality >= 0 && 1573117d96a0SIlya Dryomov locality < best_locality)) { 1574117d96a0SIlya Dryomov best_i = i; 1575117d96a0SIlya Dryomov best_locality = locality; 1576117d96a0SIlya Dryomov } 1577117d96a0SIlya Dryomov } while (++i < acting->size); 1578117d96a0SIlya Dryomov 1579117d96a0SIlya Dryomov dout("%s picked osd%d with locality %d, primary osd%d\n", __func__, 1580117d96a0SIlya Dryomov acting->osds[best_i], best_locality, acting->primary); 1581117d96a0SIlya Dryomov return best_i; 1582117d96a0SIlya Dryomov } 1583117d96a0SIlya Dryomov 158463244fa1SIlya Dryomov enum calc_target_result { 158563244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 158663244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 158763244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 158863244fa1SIlya Dryomov }; 158963244fa1SIlya Dryomov 159063244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 159163244fa1SIlya Dryomov struct ceph_osd_request_target *t, 159263244fa1SIlya Dryomov bool any_change) 159363244fa1SIlya Dryomov { 159463244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 159563244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 159663244fa1SIlya Dryomov struct ceph_osds up, acting; 1597117d96a0SIlya Dryomov bool is_read = t->flags & CEPH_OSD_FLAG_READ; 1598117d96a0SIlya Dryomov bool is_write = t->flags & CEPH_OSD_FLAG_WRITE; 159963244fa1SIlya Dryomov bool force_resend = false; 160084ed45dfSIlya Dryomov bool unpaused = false; 1601a5613724SIlya Dryomov bool legacy_change = false; 16027de030d6SIlya Dryomov bool split = false; 1603b7ec35b3SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); 1604ae78dd81SIlya Dryomov bool recovery_deletes = ceph_osdmap_flag(osdc, 1605ae78dd81SIlya Dryomov CEPH_OSDMAP_RECOVERY_DELETES); 160663244fa1SIlya Dryomov enum calc_target_result ct_res; 160763244fa1SIlya Dryomov 160804c7d789SIlya Dryomov t->epoch = osdc->osdmap->epoch; 160963244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 161063244fa1SIlya Dryomov if (!pi) { 161163244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 161263244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 161363244fa1SIlya Dryomov goto out; 161463244fa1SIlya Dryomov } 161563244fa1SIlya Dryomov 161663244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 1617dc93e0e2SIlya Dryomov if (t->last_force_resend < pi->last_force_request_resend) { 1618dc93e0e2SIlya Dryomov t->last_force_resend = pi->last_force_request_resend; 161963244fa1SIlya Dryomov force_resend = true; 1620dc93e0e2SIlya Dryomov } else if (t->last_force_resend == 0) { 162163244fa1SIlya Dryomov force_resend = true; 162263244fa1SIlya Dryomov } 162363244fa1SIlya Dryomov } 162463244fa1SIlya Dryomov 1625db098ec4SIlya Dryomov /* apply tiering */ 1626db098ec4SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 1627db098ec4SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 1628db098ec4SIlya Dryomov if ((t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 1629117d96a0SIlya Dryomov if (is_read && pi->read_tier >= 0) 163063244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 1631117d96a0SIlya Dryomov if (is_write && pi->write_tier >= 0) 163263244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 16336d637a54SIlya Dryomov 16346d637a54SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->target_oloc.pool); 16356d637a54SIlya Dryomov if (!pi) { 16366d637a54SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 16376d637a54SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 16386d637a54SIlya Dryomov goto out; 16396d637a54SIlya Dryomov } 164063244fa1SIlya Dryomov } 164163244fa1SIlya Dryomov 1642a86f009fSIlya Dryomov __ceph_object_locator_to_pg(pi, &t->target_oid, &t->target_oloc, &pgid); 164363244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 164463244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 164563244fa1SIlya Dryomov 1646df28152dSIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, pi, &pgid, &up, &acting); 164763244fa1SIlya Dryomov if (any_change && 164863244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 164963244fa1SIlya Dryomov &acting, 165063244fa1SIlya Dryomov &t->up, 165163244fa1SIlya Dryomov &up, 165263244fa1SIlya Dryomov t->size, 165363244fa1SIlya Dryomov pi->size, 165463244fa1SIlya Dryomov t->min_size, 165563244fa1SIlya Dryomov pi->min_size, 165663244fa1SIlya Dryomov t->pg_num, 165763244fa1SIlya Dryomov pi->pg_num, 165863244fa1SIlya Dryomov t->sort_bitwise, 165963244fa1SIlya Dryomov sort_bitwise, 1660ae78dd81SIlya Dryomov t->recovery_deletes, 1661ae78dd81SIlya Dryomov recovery_deletes, 166263244fa1SIlya Dryomov &last_pgid)) 166363244fa1SIlya Dryomov force_resend = true; 166463244fa1SIlya Dryomov 166563244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 166663244fa1SIlya Dryomov t->paused = false; 166784ed45dfSIlya Dryomov unpaused = true; 166863244fa1SIlya Dryomov } 166984ed45dfSIlya Dryomov legacy_change = ceph_pg_compare(&t->pgid, &pgid) || 1670117d96a0SIlya Dryomov ceph_osds_changed(&t->acting, &acting, 1671117d96a0SIlya Dryomov t->used_replica || any_change); 16727de030d6SIlya Dryomov if (t->pg_num) 16737de030d6SIlya Dryomov split = ceph_pg_is_split(&last_pgid, t->pg_num, pi->pg_num); 167463244fa1SIlya Dryomov 16757de030d6SIlya Dryomov if (legacy_change || force_resend || split) { 167663244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 1677df28152dSIlya Dryomov ceph_pg_to_primary_shard(osdc->osdmap, pi, &pgid, &t->spgid); 167863244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 167963244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 168063244fa1SIlya Dryomov t->size = pi->size; 168163244fa1SIlya Dryomov t->min_size = pi->min_size; 168263244fa1SIlya Dryomov t->pg_num = pi->pg_num; 168363244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 168463244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 1685ae78dd81SIlya Dryomov t->recovery_deletes = recovery_deletes; 168663244fa1SIlya Dryomov 1687117d96a0SIlya Dryomov if ((t->flags & (CEPH_OSD_FLAG_BALANCE_READS | 1688117d96a0SIlya Dryomov CEPH_OSD_FLAG_LOCALIZE_READS)) && 1689117d96a0SIlya Dryomov !is_write && pi->type == CEPH_POOL_TYPE_REP && 1690117d96a0SIlya Dryomov acting.size > 1) { 1691117d96a0SIlya Dryomov int pos; 1692117d96a0SIlya Dryomov 1693117d96a0SIlya Dryomov WARN_ON(!is_read || acting.osds[0] != acting.primary); 1694117d96a0SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_BALANCE_READS) { 1695117d96a0SIlya Dryomov pos = pick_random_replica(&acting); 1696117d96a0SIlya Dryomov } else { 1697117d96a0SIlya Dryomov pos = pick_closest_replica(osdc, &acting); 1698117d96a0SIlya Dryomov } 1699117d96a0SIlya Dryomov t->osd = acting.osds[pos]; 1700117d96a0SIlya Dryomov t->used_replica = pos > 0; 1701117d96a0SIlya Dryomov } else { 170263244fa1SIlya Dryomov t->osd = acting.primary; 1703117d96a0SIlya Dryomov t->used_replica = false; 1704117d96a0SIlya Dryomov } 170563244fa1SIlya Dryomov } 170663244fa1SIlya Dryomov 1707a5613724SIlya Dryomov if (unpaused || legacy_change || force_resend || split) 170884ed45dfSIlya Dryomov ct_res = CALC_TARGET_NEED_RESEND; 170984ed45dfSIlya Dryomov else 171084ed45dfSIlya Dryomov ct_res = CALC_TARGET_NO_ACTION; 171184ed45dfSIlya Dryomov 171263244fa1SIlya Dryomov out: 1713a5613724SIlya Dryomov dout("%s t %p -> %d%d%d%d ct_res %d osd%d\n", __func__, t, unpaused, 1714a5613724SIlya Dryomov legacy_change, force_resend, split, ct_res, t->osd); 171563244fa1SIlya Dryomov return ct_res; 171663244fa1SIlya Dryomov } 171763244fa1SIlya Dryomov 1718a02a946dSIlya Dryomov static struct ceph_spg_mapping *alloc_spg_mapping(void) 1719a02a946dSIlya Dryomov { 1720a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1721a02a946dSIlya Dryomov 1722a02a946dSIlya Dryomov spg = kmalloc(sizeof(*spg), GFP_NOIO); 1723a02a946dSIlya Dryomov if (!spg) 1724a02a946dSIlya Dryomov return NULL; 1725a02a946dSIlya Dryomov 1726a02a946dSIlya Dryomov RB_CLEAR_NODE(&spg->node); 1727a02a946dSIlya Dryomov spg->backoffs = RB_ROOT; 1728a02a946dSIlya Dryomov return spg; 1729a02a946dSIlya Dryomov } 1730a02a946dSIlya Dryomov 1731a02a946dSIlya Dryomov static void free_spg_mapping(struct ceph_spg_mapping *spg) 1732a02a946dSIlya Dryomov { 1733a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&spg->node)); 1734a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&spg->backoffs)); 1735a02a946dSIlya Dryomov 1736a02a946dSIlya Dryomov kfree(spg); 1737a02a946dSIlya Dryomov } 1738a02a946dSIlya Dryomov 1739a02a946dSIlya Dryomov /* 1740a02a946dSIlya Dryomov * rbtree of ceph_spg_mapping for handling map<spg_t, ...>, similar to 1741a02a946dSIlya Dryomov * ceph_pg_mapping. Used to track OSD backoffs -- a backoff [range] is 1742a02a946dSIlya Dryomov * defined only within a specific spgid; it does not pass anything to 1743a02a946dSIlya Dryomov * children on split, or to another primary. 1744a02a946dSIlya Dryomov */ 1745a02a946dSIlya Dryomov DEFINE_RB_FUNCS2(spg_mapping, struct ceph_spg_mapping, spgid, ceph_spg_compare, 1746a02a946dSIlya Dryomov RB_BYPTR, const struct ceph_spg *, node) 1747a02a946dSIlya Dryomov 1748a02a946dSIlya Dryomov static u64 hoid_get_bitwise_key(const struct ceph_hobject_id *hoid) 1749a02a946dSIlya Dryomov { 1750a02a946dSIlya Dryomov return hoid->is_max ? 0x100000000ull : hoid->hash_reverse_bits; 1751a02a946dSIlya Dryomov } 1752a02a946dSIlya Dryomov 1753a02a946dSIlya Dryomov static void hoid_get_effective_key(const struct ceph_hobject_id *hoid, 1754a02a946dSIlya Dryomov void **pkey, size_t *pkey_len) 1755a02a946dSIlya Dryomov { 1756a02a946dSIlya Dryomov if (hoid->key_len) { 1757a02a946dSIlya Dryomov *pkey = hoid->key; 1758a02a946dSIlya Dryomov *pkey_len = hoid->key_len; 1759a02a946dSIlya Dryomov } else { 1760a02a946dSIlya Dryomov *pkey = hoid->oid; 1761a02a946dSIlya Dryomov *pkey_len = hoid->oid_len; 1762a02a946dSIlya Dryomov } 1763a02a946dSIlya Dryomov } 1764a02a946dSIlya Dryomov 1765a02a946dSIlya Dryomov static int compare_names(const void *name1, size_t name1_len, 1766a02a946dSIlya Dryomov const void *name2, size_t name2_len) 1767a02a946dSIlya Dryomov { 1768a02a946dSIlya Dryomov int ret; 1769a02a946dSIlya Dryomov 1770a02a946dSIlya Dryomov ret = memcmp(name1, name2, min(name1_len, name2_len)); 1771a02a946dSIlya Dryomov if (!ret) { 1772a02a946dSIlya Dryomov if (name1_len < name2_len) 1773a02a946dSIlya Dryomov ret = -1; 1774a02a946dSIlya Dryomov else if (name1_len > name2_len) 1775a02a946dSIlya Dryomov ret = 1; 1776a02a946dSIlya Dryomov } 1777a02a946dSIlya Dryomov return ret; 1778a02a946dSIlya Dryomov } 1779a02a946dSIlya Dryomov 1780a02a946dSIlya Dryomov static int hoid_compare(const struct ceph_hobject_id *lhs, 1781a02a946dSIlya Dryomov const struct ceph_hobject_id *rhs) 1782a02a946dSIlya Dryomov { 1783a02a946dSIlya Dryomov void *effective_key1, *effective_key2; 1784a02a946dSIlya Dryomov size_t effective_key1_len, effective_key2_len; 1785a02a946dSIlya Dryomov int ret; 1786a02a946dSIlya Dryomov 1787a02a946dSIlya Dryomov if (lhs->is_max < rhs->is_max) 1788a02a946dSIlya Dryomov return -1; 1789a02a946dSIlya Dryomov if (lhs->is_max > rhs->is_max) 1790a02a946dSIlya Dryomov return 1; 1791a02a946dSIlya Dryomov 1792a02a946dSIlya Dryomov if (lhs->pool < rhs->pool) 1793a02a946dSIlya Dryomov return -1; 1794a02a946dSIlya Dryomov if (lhs->pool > rhs->pool) 1795a02a946dSIlya Dryomov return 1; 1796a02a946dSIlya Dryomov 1797a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) < hoid_get_bitwise_key(rhs)) 1798a02a946dSIlya Dryomov return -1; 1799a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) > hoid_get_bitwise_key(rhs)) 1800a02a946dSIlya Dryomov return 1; 1801a02a946dSIlya Dryomov 1802a02a946dSIlya Dryomov ret = compare_names(lhs->nspace, lhs->nspace_len, 1803a02a946dSIlya Dryomov rhs->nspace, rhs->nspace_len); 1804a02a946dSIlya Dryomov if (ret) 1805a02a946dSIlya Dryomov return ret; 1806a02a946dSIlya Dryomov 1807a02a946dSIlya Dryomov hoid_get_effective_key(lhs, &effective_key1, &effective_key1_len); 1808a02a946dSIlya Dryomov hoid_get_effective_key(rhs, &effective_key2, &effective_key2_len); 1809a02a946dSIlya Dryomov ret = compare_names(effective_key1, effective_key1_len, 1810a02a946dSIlya Dryomov effective_key2, effective_key2_len); 1811a02a946dSIlya Dryomov if (ret) 1812a02a946dSIlya Dryomov return ret; 1813a02a946dSIlya Dryomov 1814a02a946dSIlya Dryomov ret = compare_names(lhs->oid, lhs->oid_len, rhs->oid, rhs->oid_len); 1815a02a946dSIlya Dryomov if (ret) 1816a02a946dSIlya Dryomov return ret; 1817a02a946dSIlya Dryomov 1818a02a946dSIlya Dryomov if (lhs->snapid < rhs->snapid) 1819a02a946dSIlya Dryomov return -1; 1820a02a946dSIlya Dryomov if (lhs->snapid > rhs->snapid) 1821a02a946dSIlya Dryomov return 1; 1822a02a946dSIlya Dryomov 1823a02a946dSIlya Dryomov return 0; 1824a02a946dSIlya Dryomov } 1825a02a946dSIlya Dryomov 1826a02a946dSIlya Dryomov /* 1827a02a946dSIlya Dryomov * For decoding ->begin and ->end of MOSDBackoff only -- no MIN/MAX 1828a02a946dSIlya Dryomov * compat stuff here. 1829a02a946dSIlya Dryomov * 1830a02a946dSIlya Dryomov * Assumes @hoid is zero-initialized. 1831a02a946dSIlya Dryomov */ 1832a02a946dSIlya Dryomov static int decode_hoid(void **p, void *end, struct ceph_hobject_id *hoid) 1833a02a946dSIlya Dryomov { 1834a02a946dSIlya Dryomov u8 struct_v; 1835a02a946dSIlya Dryomov u32 struct_len; 1836a02a946dSIlya Dryomov int ret; 1837a02a946dSIlya Dryomov 1838a02a946dSIlya Dryomov ret = ceph_start_decoding(p, end, 4, "hobject_t", &struct_v, 1839a02a946dSIlya Dryomov &struct_len); 1840a02a946dSIlya Dryomov if (ret) 1841a02a946dSIlya Dryomov return ret; 1842a02a946dSIlya Dryomov 1843a02a946dSIlya Dryomov if (struct_v < 4) { 1844a02a946dSIlya Dryomov pr_err("got struct_v %d < 4 of hobject_t\n", struct_v); 1845a02a946dSIlya Dryomov goto e_inval; 1846a02a946dSIlya Dryomov } 1847a02a946dSIlya Dryomov 1848a02a946dSIlya Dryomov hoid->key = ceph_extract_encoded_string(p, end, &hoid->key_len, 1849a02a946dSIlya Dryomov GFP_NOIO); 1850a02a946dSIlya Dryomov if (IS_ERR(hoid->key)) { 1851a02a946dSIlya Dryomov ret = PTR_ERR(hoid->key); 1852a02a946dSIlya Dryomov hoid->key = NULL; 1853a02a946dSIlya Dryomov return ret; 1854a02a946dSIlya Dryomov } 1855a02a946dSIlya Dryomov 1856a02a946dSIlya Dryomov hoid->oid = ceph_extract_encoded_string(p, end, &hoid->oid_len, 1857a02a946dSIlya Dryomov GFP_NOIO); 1858a02a946dSIlya Dryomov if (IS_ERR(hoid->oid)) { 1859a02a946dSIlya Dryomov ret = PTR_ERR(hoid->oid); 1860a02a946dSIlya Dryomov hoid->oid = NULL; 1861a02a946dSIlya Dryomov return ret; 1862a02a946dSIlya Dryomov } 1863a02a946dSIlya Dryomov 1864a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->snapid, e_inval); 1865a02a946dSIlya Dryomov ceph_decode_32_safe(p, end, hoid->hash, e_inval); 1866a02a946dSIlya Dryomov ceph_decode_8_safe(p, end, hoid->is_max, e_inval); 1867a02a946dSIlya Dryomov 1868a02a946dSIlya Dryomov hoid->nspace = ceph_extract_encoded_string(p, end, &hoid->nspace_len, 1869a02a946dSIlya Dryomov GFP_NOIO); 1870a02a946dSIlya Dryomov if (IS_ERR(hoid->nspace)) { 1871a02a946dSIlya Dryomov ret = PTR_ERR(hoid->nspace); 1872a02a946dSIlya Dryomov hoid->nspace = NULL; 1873a02a946dSIlya Dryomov return ret; 1874a02a946dSIlya Dryomov } 1875a02a946dSIlya Dryomov 1876a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->pool, e_inval); 1877a02a946dSIlya Dryomov 1878a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1879a02a946dSIlya Dryomov return 0; 1880a02a946dSIlya Dryomov 1881a02a946dSIlya Dryomov e_inval: 1882a02a946dSIlya Dryomov return -EINVAL; 1883a02a946dSIlya Dryomov } 1884a02a946dSIlya Dryomov 1885a02a946dSIlya Dryomov static int hoid_encoding_size(const struct ceph_hobject_id *hoid) 1886a02a946dSIlya Dryomov { 1887a02a946dSIlya Dryomov return 8 + 4 + 1 + 8 + /* snapid, hash, is_max, pool */ 1888a02a946dSIlya Dryomov 4 + hoid->key_len + 4 + hoid->oid_len + 4 + hoid->nspace_len; 1889a02a946dSIlya Dryomov } 1890a02a946dSIlya Dryomov 1891a02a946dSIlya Dryomov static void encode_hoid(void **p, void *end, const struct ceph_hobject_id *hoid) 1892a02a946dSIlya Dryomov { 1893a02a946dSIlya Dryomov ceph_start_encoding(p, 4, 3, hoid_encoding_size(hoid)); 1894a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->key, hoid->key_len); 1895a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->oid, hoid->oid_len); 1896a02a946dSIlya Dryomov ceph_encode_64(p, hoid->snapid); 1897a02a946dSIlya Dryomov ceph_encode_32(p, hoid->hash); 1898a02a946dSIlya Dryomov ceph_encode_8(p, hoid->is_max); 1899a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->nspace, hoid->nspace_len); 1900a02a946dSIlya Dryomov ceph_encode_64(p, hoid->pool); 1901a02a946dSIlya Dryomov } 1902a02a946dSIlya Dryomov 1903a02a946dSIlya Dryomov static void free_hoid(struct ceph_hobject_id *hoid) 1904a02a946dSIlya Dryomov { 1905a02a946dSIlya Dryomov if (hoid) { 1906a02a946dSIlya Dryomov kfree(hoid->key); 1907a02a946dSIlya Dryomov kfree(hoid->oid); 1908a02a946dSIlya Dryomov kfree(hoid->nspace); 1909a02a946dSIlya Dryomov kfree(hoid); 1910a02a946dSIlya Dryomov } 1911a02a946dSIlya Dryomov } 1912a02a946dSIlya Dryomov 1913a02a946dSIlya Dryomov static struct ceph_osd_backoff *alloc_backoff(void) 1914a02a946dSIlya Dryomov { 1915a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1916a02a946dSIlya Dryomov 1917a02a946dSIlya Dryomov backoff = kzalloc(sizeof(*backoff), GFP_NOIO); 1918a02a946dSIlya Dryomov if (!backoff) 1919a02a946dSIlya Dryomov return NULL; 1920a02a946dSIlya Dryomov 1921a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->spg_node); 1922a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->id_node); 1923a02a946dSIlya Dryomov return backoff; 1924a02a946dSIlya Dryomov } 1925a02a946dSIlya Dryomov 1926a02a946dSIlya Dryomov static void free_backoff(struct ceph_osd_backoff *backoff) 1927a02a946dSIlya Dryomov { 1928a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->spg_node)); 1929a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->id_node)); 1930a02a946dSIlya Dryomov 1931a02a946dSIlya Dryomov free_hoid(backoff->begin); 1932a02a946dSIlya Dryomov free_hoid(backoff->end); 1933a02a946dSIlya Dryomov kfree(backoff); 1934a02a946dSIlya Dryomov } 1935a02a946dSIlya Dryomov 1936a02a946dSIlya Dryomov /* 1937a02a946dSIlya Dryomov * Within a specific spgid, backoffs are managed by ->begin hoid. 1938a02a946dSIlya Dryomov */ 1939a02a946dSIlya Dryomov DEFINE_RB_INSDEL_FUNCS2(backoff, struct ceph_osd_backoff, begin, hoid_compare, 1940a02a946dSIlya Dryomov RB_BYVAL, spg_node); 1941a02a946dSIlya Dryomov 1942a02a946dSIlya Dryomov static struct ceph_osd_backoff *lookup_containing_backoff(struct rb_root *root, 1943a02a946dSIlya Dryomov const struct ceph_hobject_id *hoid) 1944a02a946dSIlya Dryomov { 1945a02a946dSIlya Dryomov struct rb_node *n = root->rb_node; 1946a02a946dSIlya Dryomov 1947a02a946dSIlya Dryomov while (n) { 1948a02a946dSIlya Dryomov struct ceph_osd_backoff *cur = 1949a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_backoff, spg_node); 1950a02a946dSIlya Dryomov int cmp; 1951a02a946dSIlya Dryomov 1952a02a946dSIlya Dryomov cmp = hoid_compare(hoid, cur->begin); 1953a02a946dSIlya Dryomov if (cmp < 0) { 1954a02a946dSIlya Dryomov n = n->rb_left; 1955a02a946dSIlya Dryomov } else if (cmp > 0) { 1956a02a946dSIlya Dryomov if (hoid_compare(hoid, cur->end) < 0) 1957a02a946dSIlya Dryomov return cur; 1958a02a946dSIlya Dryomov 1959a02a946dSIlya Dryomov n = n->rb_right; 1960a02a946dSIlya Dryomov } else { 1961a02a946dSIlya Dryomov return cur; 1962a02a946dSIlya Dryomov } 1963a02a946dSIlya Dryomov } 1964a02a946dSIlya Dryomov 1965a02a946dSIlya Dryomov return NULL; 1966a02a946dSIlya Dryomov } 1967a02a946dSIlya Dryomov 1968a02a946dSIlya Dryomov /* 1969a02a946dSIlya Dryomov * Each backoff has a unique id within its OSD session. 1970a02a946dSIlya Dryomov */ 1971a02a946dSIlya Dryomov DEFINE_RB_FUNCS(backoff_by_id, struct ceph_osd_backoff, id, id_node) 1972a02a946dSIlya Dryomov 1973a02a946dSIlya Dryomov static void clear_backoffs(struct ceph_osd *osd) 1974a02a946dSIlya Dryomov { 1975a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&osd->o_backoff_mappings)) { 1976a02a946dSIlya Dryomov struct ceph_spg_mapping *spg = 1977a02a946dSIlya Dryomov rb_entry(rb_first(&osd->o_backoff_mappings), 1978a02a946dSIlya Dryomov struct ceph_spg_mapping, node); 1979a02a946dSIlya Dryomov 1980a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&spg->backoffs)) { 1981a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff = 1982a02a946dSIlya Dryomov rb_entry(rb_first(&spg->backoffs), 1983a02a946dSIlya Dryomov struct ceph_osd_backoff, spg_node); 1984a02a946dSIlya Dryomov 1985a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 1986a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 1987a02a946dSIlya Dryomov free_backoff(backoff); 1988a02a946dSIlya Dryomov } 1989a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 1990a02a946dSIlya Dryomov free_spg_mapping(spg); 1991a02a946dSIlya Dryomov } 1992a02a946dSIlya Dryomov } 1993a02a946dSIlya Dryomov 1994a02a946dSIlya Dryomov /* 1995a02a946dSIlya Dryomov * Set up a temporary, non-owning view into @t. 1996a02a946dSIlya Dryomov */ 1997a02a946dSIlya Dryomov static void hoid_fill_from_target(struct ceph_hobject_id *hoid, 1998a02a946dSIlya Dryomov const struct ceph_osd_request_target *t) 1999a02a946dSIlya Dryomov { 2000a02a946dSIlya Dryomov hoid->key = NULL; 2001a02a946dSIlya Dryomov hoid->key_len = 0; 2002a02a946dSIlya Dryomov hoid->oid = t->target_oid.name; 2003a02a946dSIlya Dryomov hoid->oid_len = t->target_oid.name_len; 2004a02a946dSIlya Dryomov hoid->snapid = CEPH_NOSNAP; 2005a02a946dSIlya Dryomov hoid->hash = t->pgid.seed; 2006a02a946dSIlya Dryomov hoid->is_max = false; 2007a02a946dSIlya Dryomov if (t->target_oloc.pool_ns) { 2008a02a946dSIlya Dryomov hoid->nspace = t->target_oloc.pool_ns->str; 2009a02a946dSIlya Dryomov hoid->nspace_len = t->target_oloc.pool_ns->len; 2010a02a946dSIlya Dryomov } else { 2011a02a946dSIlya Dryomov hoid->nspace = NULL; 2012a02a946dSIlya Dryomov hoid->nspace_len = 0; 2013a02a946dSIlya Dryomov } 2014a02a946dSIlya Dryomov hoid->pool = t->target_oloc.pool; 2015a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 2016a02a946dSIlya Dryomov } 2017a02a946dSIlya Dryomov 2018a02a946dSIlya Dryomov static bool should_plug_request(struct ceph_osd_request *req) 2019a02a946dSIlya Dryomov { 2020a02a946dSIlya Dryomov struct ceph_osd *osd = req->r_osd; 2021a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 2022a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 2023a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 2024a02a946dSIlya Dryomov 2025a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &req->r_t.spgid); 2026a02a946dSIlya Dryomov if (!spg) 2027a02a946dSIlya Dryomov return false; 2028a02a946dSIlya Dryomov 2029a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, &req->r_t); 2030a02a946dSIlya Dryomov backoff = lookup_containing_backoff(&spg->backoffs, &hoid); 2031a02a946dSIlya Dryomov if (!backoff) 2032a02a946dSIlya Dryomov return false; 2033a02a946dSIlya Dryomov 2034a02a946dSIlya Dryomov dout("%s req %p tid %llu backoff osd%d spgid %llu.%xs%d id %llu\n", 2035a02a946dSIlya Dryomov __func__, req, req->r_tid, osd->o_osd, backoff->spgid.pgid.pool, 2036a02a946dSIlya Dryomov backoff->spgid.pgid.seed, backoff->spgid.shard, backoff->id); 2037a02a946dSIlya Dryomov return true; 2038a02a946dSIlya Dryomov } 2039a02a946dSIlya Dryomov 20400d9c1ab3SIlya Dryomov /* 20410d9c1ab3SIlya Dryomov * Keep get_num_data_items() in sync with this function. 20420d9c1ab3SIlya Dryomov */ 204398c4bfe9SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req) 20443d14c5d2SYehuda Sadeh { 204598c4bfe9SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 204698c4bfe9SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 204798c4bfe9SIlya Dryomov struct ceph_osd_req_op *op; 20483d14c5d2SYehuda Sadeh 204998c4bfe9SIlya Dryomov if (req->r_request->num_data_items || req->r_reply->num_data_items) 2050bb873b53SIlya Dryomov return; 20513d14c5d2SYehuda Sadeh 205298c4bfe9SIlya Dryomov WARN_ON(request_msg->data_length || reply_msg->data_length); 205398c4bfe9SIlya Dryomov for (op = req->r_ops; op != &req->r_ops[req->r_num_ops]; op++) { 2054bb873b53SIlya Dryomov switch (op->op) { 2055bb873b53SIlya Dryomov /* request */ 2056bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 2057bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 2058bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 205998c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 206098c4bfe9SIlya Dryomov &op->extent.osd_data); 2061bb873b53SIlya Dryomov break; 2062bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 2063bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 2064bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 2065bb873b53SIlya Dryomov op->xattr.value_len); 206698c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 206798c4bfe9SIlya Dryomov &op->xattr.osd_data); 2068bb873b53SIlya Dryomov break; 2069922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 207098c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 2071922dab61SIlya Dryomov &op->notify_ack.request_data); 2072922dab61SIlya Dryomov break; 207378beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 207423ddf9beSLuis Henriques ceph_osdc_msg_data_add(request_msg, 207523ddf9beSLuis Henriques &op->copy_from.osd_data); 207623ddf9beSLuis Henriques break; 2077bb873b53SIlya Dryomov 2078bb873b53SIlya Dryomov /* reply */ 2079bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 208098c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 2081bb873b53SIlya Dryomov &op->raw_data_in); 2082bb873b53SIlya Dryomov break; 2083bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 2084f628d799SJeff Layton case CEPH_OSD_OP_SPARSE_READ: 208598c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 2086bb873b53SIlya Dryomov &op->extent.osd_data); 2087bb873b53SIlya Dryomov break; 2088a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 208998c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 2090a4ed38d7SDouglas Fuller &op->list_watchers.response_data); 2091a4ed38d7SDouglas Fuller break; 2092bb873b53SIlya Dryomov 2093bb873b53SIlya Dryomov /* both */ 2094bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 2095bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 2096bb873b53SIlya Dryomov op->cls.method_len + 2097bb873b53SIlya Dryomov op->cls.indata_len); 209898c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 209998c4bfe9SIlya Dryomov &op->cls.request_info); 2100bb873b53SIlya Dryomov /* optional, can be NONE */ 210198c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 210298c4bfe9SIlya Dryomov &op->cls.request_data); 2103bb873b53SIlya Dryomov /* optional, can be NONE */ 210498c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 2105bb873b53SIlya Dryomov &op->cls.response_data); 2106bb873b53SIlya Dryomov break; 210719079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 210898c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 210919079203SIlya Dryomov &op->notify.request_data); 211098c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 211119079203SIlya Dryomov &op->notify.response_data); 211219079203SIlya Dryomov break; 2113bb873b53SIlya Dryomov } 2114bb873b53SIlya Dryomov } 2115bb873b53SIlya Dryomov } 2116bb873b53SIlya Dryomov 21172e59ffd1SIlya Dryomov static void encode_pgid(void **p, const struct ceph_pg *pgid) 21182e59ffd1SIlya Dryomov { 21192e59ffd1SIlya Dryomov ceph_encode_8(p, 1); 21202e59ffd1SIlya Dryomov ceph_encode_64(p, pgid->pool); 21212e59ffd1SIlya Dryomov ceph_encode_32(p, pgid->seed); 21222e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 21232e59ffd1SIlya Dryomov } 21242e59ffd1SIlya Dryomov 21258cb441c0SIlya Dryomov static void encode_spgid(void **p, const struct ceph_spg *spgid) 21268cb441c0SIlya Dryomov { 21278cb441c0SIlya Dryomov ceph_start_encoding(p, 1, 1, CEPH_PGID_ENCODING_LEN + 1); 21288cb441c0SIlya Dryomov encode_pgid(p, &spgid->pgid); 21298cb441c0SIlya Dryomov ceph_encode_8(p, spgid->shard); 21308cb441c0SIlya Dryomov } 21318cb441c0SIlya Dryomov 21322e59ffd1SIlya Dryomov static void encode_oloc(void **p, void *end, 21332e59ffd1SIlya Dryomov const struct ceph_object_locator *oloc) 21342e59ffd1SIlya Dryomov { 21352e59ffd1SIlya Dryomov ceph_start_encoding(p, 5, 4, ceph_oloc_encoding_size(oloc)); 21362e59ffd1SIlya Dryomov ceph_encode_64(p, oloc->pool); 21372e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 21382e59ffd1SIlya Dryomov ceph_encode_32(p, 0); /* key len */ 21392e59ffd1SIlya Dryomov if (oloc->pool_ns) 21402e59ffd1SIlya Dryomov ceph_encode_string(p, end, oloc->pool_ns->str, 21412e59ffd1SIlya Dryomov oloc->pool_ns->len); 21422e59ffd1SIlya Dryomov else 21432e59ffd1SIlya Dryomov ceph_encode_32(p, 0); 21442e59ffd1SIlya Dryomov } 21452e59ffd1SIlya Dryomov 21468cb441c0SIlya Dryomov static void encode_request_partial(struct ceph_osd_request *req, 21478cb441c0SIlya Dryomov struct ceph_msg *msg) 2148bb873b53SIlya Dryomov { 2149bb873b53SIlya Dryomov void *p = msg->front.iov_base; 2150bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 2151bb873b53SIlya Dryomov u32 data_len = 0; 2152bb873b53SIlya Dryomov int i; 2153bb873b53SIlya Dryomov 2154bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 2155bb873b53SIlya Dryomov /* snapshots aren't writeable */ 2156bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 2157bb873b53SIlya Dryomov } else { 2158bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 2159bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 2160bb873b53SIlya Dryomov } 2161bb873b53SIlya Dryomov 216298c4bfe9SIlya Dryomov setup_request_data(req); 2163bb873b53SIlya Dryomov 21648cb441c0SIlya Dryomov encode_spgid(&p, &req->r_t.spgid); /* actual spg */ 21658cb441c0SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); /* raw hash */ 2166bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 2167bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 21688cb441c0SIlya Dryomov 21698cb441c0SIlya Dryomov /* reqid */ 21708cb441c0SIlya Dryomov ceph_start_encoding(&p, 2, 2, sizeof(struct ceph_osd_reqid)); 21718cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_osd_reqid)); 21728cb441c0SIlya Dryomov p += sizeof(struct ceph_osd_reqid); 21738cb441c0SIlya Dryomov 21748cb441c0SIlya Dryomov /* trace */ 21758cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_blkin_trace_info)); 21768cb441c0SIlya Dryomov p += sizeof(struct ceph_blkin_trace_info); 21778cb441c0SIlya Dryomov 21788cb441c0SIlya Dryomov ceph_encode_32(&p, 0); /* client_inc, always 0 */ 2179fac02ddfSArnd Bergmann ceph_encode_timespec64(p, &req->r_mtime); 2180bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 2181aa26d662SJeff Layton 21822e59ffd1SIlya Dryomov encode_oloc(&p, end, &req->r_t.target_oloc); 21832e59ffd1SIlya Dryomov ceph_encode_string(&p, end, req->r_t.target_oid.name, 21842e59ffd1SIlya Dryomov req->r_t.target_oid.name_len); 2185bb873b53SIlya Dryomov 2186bb873b53SIlya Dryomov /* ops, can imply data */ 2187bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 2188bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 2189bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 2190bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 2191bb873b53SIlya Dryomov } 2192bb873b53SIlya Dryomov 2193bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 2194bb873b53SIlya Dryomov if (req->r_snapc) { 2195bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 2196bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 2197bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 2198bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 2199bb873b53SIlya Dryomov } else { 2200bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 2201bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 2202bb873b53SIlya Dryomov } 2203bb873b53SIlya Dryomov 2204bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 2205986e8989SIlya Dryomov BUG_ON(p > end - 8); /* space for features */ 2206bb873b53SIlya Dryomov 22078cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(8); /* MOSDOp v8 */ 22088cb441c0SIlya Dryomov /* front_len is finalized in encode_request_finish() */ 2209986e8989SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 2210986e8989SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 2211bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 2212bb873b53SIlya Dryomov /* 2213bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 2214bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 2215bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 2216bb873b53SIlya Dryomov */ 2217bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 2218bb873b53SIlya Dryomov 22198cb441c0SIlya Dryomov dout("%s req %p msg %p oid %s oid_len %d\n", __func__, req, msg, 22208cb441c0SIlya Dryomov req->r_t.target_oid.name, req->r_t.target_oid.name_len); 22218cb441c0SIlya Dryomov } 22228cb441c0SIlya Dryomov 22238cb441c0SIlya Dryomov static void encode_request_finish(struct ceph_msg *msg) 22248cb441c0SIlya Dryomov { 22258cb441c0SIlya Dryomov void *p = msg->front.iov_base; 2226986e8989SIlya Dryomov void *const partial_end = p + msg->front.iov_len; 22278cb441c0SIlya Dryomov void *const end = p + msg->front_alloc_len; 22288cb441c0SIlya Dryomov 22298cb441c0SIlya Dryomov if (CEPH_HAVE_FEATURE(msg->con->peer_features, RESEND_ON_SPLIT)) { 22308cb441c0SIlya Dryomov /* luminous OSD -- encode features and be done */ 2231986e8989SIlya Dryomov p = partial_end; 22328cb441c0SIlya Dryomov ceph_encode_64(&p, msg->con->peer_features); 22338cb441c0SIlya Dryomov } else { 22348cb441c0SIlya Dryomov struct { 22358cb441c0SIlya Dryomov char spgid[CEPH_ENCODING_START_BLK_LEN + 22368cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1]; 22378cb441c0SIlya Dryomov __le32 hash; 22388cb441c0SIlya Dryomov __le32 epoch; 22398cb441c0SIlya Dryomov __le32 flags; 22408cb441c0SIlya Dryomov char reqid[CEPH_ENCODING_START_BLK_LEN + 22418cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid)]; 22428cb441c0SIlya Dryomov char trace[sizeof(struct ceph_blkin_trace_info)]; 22438cb441c0SIlya Dryomov __le32 client_inc; 22448cb441c0SIlya Dryomov struct ceph_timespec mtime; 22458cb441c0SIlya Dryomov } __packed head; 22468cb441c0SIlya Dryomov struct ceph_pg pgid; 22478cb441c0SIlya Dryomov void *oloc, *oid, *tail; 22488cb441c0SIlya Dryomov int oloc_len, oid_len, tail_len; 22498cb441c0SIlya Dryomov int len; 22508cb441c0SIlya Dryomov 22518cb441c0SIlya Dryomov /* 22528cb441c0SIlya Dryomov * Pre-luminous OSD -- reencode v8 into v4 using @head 22538cb441c0SIlya Dryomov * as a temporary buffer. Encode the raw PG; the rest 22548cb441c0SIlya Dryomov * is just a matter of moving oloc, oid and tail blobs 22558cb441c0SIlya Dryomov * around. 22568cb441c0SIlya Dryomov */ 22578cb441c0SIlya Dryomov memcpy(&head, p, sizeof(head)); 22588cb441c0SIlya Dryomov p += sizeof(head); 22598cb441c0SIlya Dryomov 22608cb441c0SIlya Dryomov oloc = p; 22618cb441c0SIlya Dryomov p += CEPH_ENCODING_START_BLK_LEN; 22628cb441c0SIlya Dryomov pgid.pool = ceph_decode_64(&p); 22638cb441c0SIlya Dryomov p += 4 + 4; /* preferred, key len */ 22648cb441c0SIlya Dryomov len = ceph_decode_32(&p); 22658cb441c0SIlya Dryomov p += len; /* nspace */ 22668cb441c0SIlya Dryomov oloc_len = p - oloc; 22678cb441c0SIlya Dryomov 22688cb441c0SIlya Dryomov oid = p; 22698cb441c0SIlya Dryomov len = ceph_decode_32(&p); 22708cb441c0SIlya Dryomov p += len; 22718cb441c0SIlya Dryomov oid_len = p - oid; 22728cb441c0SIlya Dryomov 22738cb441c0SIlya Dryomov tail = p; 2274986e8989SIlya Dryomov tail_len = partial_end - p; 22758cb441c0SIlya Dryomov 22768cb441c0SIlya Dryomov p = msg->front.iov_base; 22778cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.client_inc, sizeof(head.client_inc)); 22788cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.epoch, sizeof(head.epoch)); 22798cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.flags, sizeof(head.flags)); 22808cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.mtime, sizeof(head.mtime)); 22818cb441c0SIlya Dryomov 22828cb441c0SIlya Dryomov /* reassert_version */ 22838cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_eversion)); 22848cb441c0SIlya Dryomov p += sizeof(struct ceph_eversion); 22858cb441c0SIlya Dryomov 22868cb441c0SIlya Dryomov BUG_ON(p >= oloc); 22878cb441c0SIlya Dryomov memmove(p, oloc, oloc_len); 22888cb441c0SIlya Dryomov p += oloc_len; 22898cb441c0SIlya Dryomov 22908cb441c0SIlya Dryomov pgid.seed = le32_to_cpu(head.hash); 22918cb441c0SIlya Dryomov encode_pgid(&p, &pgid); /* raw pg */ 22928cb441c0SIlya Dryomov 22938cb441c0SIlya Dryomov BUG_ON(p >= oid); 22948cb441c0SIlya Dryomov memmove(p, oid, oid_len); 22958cb441c0SIlya Dryomov p += oid_len; 22968cb441c0SIlya Dryomov 22978cb441c0SIlya Dryomov /* tail -- ops, snapid, snapc, retry_attempt */ 22988cb441c0SIlya Dryomov BUG_ON(p >= tail); 22998cb441c0SIlya Dryomov memmove(p, tail, tail_len); 23008cb441c0SIlya Dryomov p += tail_len; 23018cb441c0SIlya Dryomov 23028cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 23038cb441c0SIlya Dryomov } 23048cb441c0SIlya Dryomov 23058cb441c0SIlya Dryomov BUG_ON(p > end); 23068cb441c0SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 23078cb441c0SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 23088cb441c0SIlya Dryomov 23098cb441c0SIlya Dryomov dout("%s msg %p tid %llu %u+%u+%u v%d\n", __func__, msg, 23108cb441c0SIlya Dryomov le64_to_cpu(msg->hdr.tid), le32_to_cpu(msg->hdr.front_len), 23118cb441c0SIlya Dryomov le32_to_cpu(msg->hdr.middle_len), le32_to_cpu(msg->hdr.data_len), 23128cb441c0SIlya Dryomov le16_to_cpu(msg->hdr.version)); 2313bb873b53SIlya Dryomov } 2314bb873b53SIlya Dryomov 2315bb873b53SIlya Dryomov /* 2316bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 2317bb873b53SIlya Dryomov */ 2318bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 2319bb873b53SIlya Dryomov { 2320bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 2321bb873b53SIlya Dryomov 23225aea3dcdSIlya Dryomov verify_osd_locked(osd); 2323bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 2324bb873b53SIlya Dryomov 2325a02a946dSIlya Dryomov /* backoff? */ 2326a02a946dSIlya Dryomov if (should_plug_request(req)) 2327a02a946dSIlya Dryomov return; 2328a02a946dSIlya Dryomov 23295aea3dcdSIlya Dryomov /* 23305aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 23315aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 23325aea3dcdSIlya Dryomov */ 23335aea3dcdSIlya Dryomov if (req->r_sent) 23345aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 23355aea3dcdSIlya Dryomov 2336bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 2337bb873b53SIlya Dryomov if (req->r_attempts) 2338bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 2339bb873b53SIlya Dryomov else 2340bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 2341bb873b53SIlya Dryomov 23428cb441c0SIlya Dryomov encode_request_partial(req, req->r_request); 2343bb873b53SIlya Dryomov 234404c7d789SIlya 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", 2345bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 2346dc98ff72SIlya Dryomov req->r_t.spgid.pgid.pool, req->r_t.spgid.pgid.seed, 234704c7d789SIlya Dryomov req->r_t.spgid.shard, osd->o_osd, req->r_t.epoch, req->r_flags, 234804c7d789SIlya Dryomov req->r_attempts); 2349bb873b53SIlya Dryomov 2350bb873b53SIlya Dryomov req->r_t.paused = false; 23513d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 2352bb873b53SIlya Dryomov req->r_attempts++; 23533d14c5d2SYehuda Sadeh 2354bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 2355bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 2356bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 23573d14c5d2SYehuda Sadeh } 23583d14c5d2SYehuda Sadeh 235942c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 236042c1b124SIlya Dryomov { 236142c1b124SIlya Dryomov bool continuous = false; 236242c1b124SIlya Dryomov 23635aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 236442c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 236542c1b124SIlya Dryomov 2366b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2367b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || 2368b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 236942c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 237042c1b124SIlya Dryomov continuous = true; 237142c1b124SIlya Dryomov } else { 237242c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 237342c1b124SIlya Dryomov } 237442c1b124SIlya Dryomov 237542c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 237642c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 237742c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 237842c1b124SIlya Dryomov } 237942c1b124SIlya Dryomov 2380a1f4020aSJeff Layton static void complete_request(struct ceph_osd_request *req, int err); 23814609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req); 23824609245eSIlya Dryomov 23835aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 23840bbfdfe8SIlya Dryomov { 23855aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 23865aea3dcdSIlya Dryomov struct ceph_osd *osd; 23874609245eSIlya Dryomov enum calc_target_result ct_res; 238866850df5SIlya Dryomov int err = 0; 23895aea3dcdSIlya Dryomov bool need_send = false; 23905aea3dcdSIlya Dryomov bool promoted = false; 23910bbfdfe8SIlya Dryomov 2392b18b9550SIlya Dryomov WARN_ON(req->r_tid); 23935aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 23945aea3dcdSIlya Dryomov 23955aea3dcdSIlya Dryomov again: 23968edf84baSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, false); 23974609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) 23984609245eSIlya Dryomov goto promote; 23994609245eSIlya Dryomov 24005aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 24015aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 24025aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 24035aea3dcdSIlya Dryomov goto promote; 24045aea3dcdSIlya Dryomov } 24055aea3dcdSIlya Dryomov 240666850df5SIlya Dryomov if (osdc->abort_err) { 240766850df5SIlya Dryomov dout("req %p abort_err %d\n", req, osdc->abort_err); 240866850df5SIlya Dryomov err = osdc->abort_err; 240966850df5SIlya Dryomov } else if (osdc->osdmap->epoch < osdc->epoch_barrier) { 241058eb7932SJeff Layton dout("req %p epoch %u barrier %u\n", req, osdc->osdmap->epoch, 241158eb7932SJeff Layton osdc->epoch_barrier); 241258eb7932SJeff Layton req->r_t.paused = true; 241358eb7932SJeff Layton maybe_request_map(osdc); 241458eb7932SJeff Layton } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 2415b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 24165aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 24175aea3dcdSIlya Dryomov req->r_t.paused = true; 24185aea3dcdSIlya Dryomov maybe_request_map(osdc); 24195aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 2420b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 24215aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 24225aea3dcdSIlya Dryomov req->r_t.paused = true; 24235aea3dcdSIlya Dryomov maybe_request_map(osdc); 24245aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 24255aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 24265aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 2427b7ec35b3SIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 24285aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 24295aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 243002b2f549SDongsheng Yang if (ceph_test_opt(osdc->client, ABORT_ON_FULL)) { 243129e87820SIlya Dryomov err = -ENOSPC; 243229e87820SIlya Dryomov } else { 2433dc9b0dc4SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL)) 2434dc9b0dc4SIlya Dryomov pr_warn_ratelimited("cluster is full (osdmap FULL)\n"); 2435dc9b0dc4SIlya Dryomov else 2436dc9b0dc4SIlya Dryomov pr_warn_ratelimited("pool %lld is full or reached quota\n", 2437dc9b0dc4SIlya Dryomov req->r_t.base_oloc.pool); 24385aea3dcdSIlya Dryomov req->r_t.paused = true; 24395aea3dcdSIlya Dryomov maybe_request_map(osdc); 244029e87820SIlya Dryomov } 24415aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 24425aea3dcdSIlya Dryomov need_send = true; 24430bbfdfe8SIlya Dryomov } else { 24445aea3dcdSIlya Dryomov maybe_request_map(osdc); 24450bbfdfe8SIlya Dryomov } 24460bbfdfe8SIlya Dryomov 24475aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 24485aea3dcdSIlya Dryomov /* 24495aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 24505aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 24515aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 24525aea3dcdSIlya Dryomov */ 24535aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 24545aea3dcdSIlya Dryomov link_request(osd, req); 24555aea3dcdSIlya Dryomov if (need_send) 24565aea3dcdSIlya Dryomov send_request(req); 245766850df5SIlya Dryomov else if (err) 245866850df5SIlya Dryomov complete_request(req, err); 24595aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 24605aea3dcdSIlya Dryomov 24616001567cSIlya Dryomov if (!err && ct_res == CALC_TARGET_POOL_DNE) 24624609245eSIlya Dryomov send_map_check(req); 24634609245eSIlya Dryomov 24645aea3dcdSIlya Dryomov if (promoted) 24655aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 24665aea3dcdSIlya Dryomov return; 24675aea3dcdSIlya Dryomov 24685aea3dcdSIlya Dryomov promote: 24695aea3dcdSIlya Dryomov up_read(&osdc->lock); 24705aea3dcdSIlya Dryomov down_write(&osdc->lock); 24715aea3dcdSIlya Dryomov wrlocked = true; 24725aea3dcdSIlya Dryomov promoted = true; 24735aea3dcdSIlya Dryomov goto again; 24740bbfdfe8SIlya Dryomov } 24750bbfdfe8SIlya Dryomov 24765aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 24775aea3dcdSIlya Dryomov { 247854ea0046SIlya Dryomov WARN_ON(req->r_flags & (CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK)); 2479b18b9550SIlya Dryomov WARN_ON(!(req->r_flags & (CEPH_OSD_FLAG_READ | CEPH_OSD_FLAG_WRITE))); 24805aea3dcdSIlya Dryomov 2481b18b9550SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ONDISK; 248222d2cfdfSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 24837cc5e38fSIlya Dryomov 24847cc5e38fSIlya Dryomov req->r_start_stamp = jiffies; 248597e27aaaSXiubo Li req->r_start_latency = ktime_get(); 24865aea3dcdSIlya Dryomov } 24875aea3dcdSIlya Dryomov 24885aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 24895aea3dcdSIlya Dryomov { 24905aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 24915aea3dcdSIlya Dryomov account_request(req); 24925aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 24935aea3dcdSIlya Dryomov } 24945aea3dcdSIlya Dryomov 249545ee2c1dSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 24965aea3dcdSIlya Dryomov { 24975aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 24985aea3dcdSIlya Dryomov 24994609245eSIlya Dryomov WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); 250004c7d789SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 250104c7d789SIlya Dryomov 250297e27aaaSXiubo Li req->r_end_latency = ktime_get(); 250397e27aaaSXiubo Li 2504f628d799SJeff Layton if (req->r_osd) { 2505f628d799SJeff Layton ceph_init_sparse_read(&req->r_osd->o_sparse_read); 250604c7d789SIlya Dryomov unlink_request(req->r_osd, req); 2507f628d799SJeff Layton } 25085aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 25095aea3dcdSIlya Dryomov 25105aea3dcdSIlya Dryomov /* 25115aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 25125aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 25135aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 25145aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 25155aea3dcdSIlya Dryomov */ 25165aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 25175aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 25185aea3dcdSIlya Dryomov } 25195aea3dcdSIlya Dryomov 2520fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 2521fe5da05eSIlya Dryomov { 2522d75f773cSSakari Ailus dout("%s req %p tid %llu cb %ps result %d\n", __func__, req, 2523b18b9550SIlya Dryomov req->r_tid, req->r_callback, req->r_result); 252426df726bSIlya Dryomov 252526df726bSIlya Dryomov if (req->r_callback) 2526fe5da05eSIlya Dryomov req->r_callback(req); 252726df726bSIlya Dryomov complete_all(&req->r_completion); 252826df726bSIlya Dryomov ceph_osdc_put_request(req); 2529b18b9550SIlya Dryomov } 2530fe5da05eSIlya Dryomov 253188bc1922SIlya Dryomov static void complete_request_workfn(struct work_struct *work) 253288bc1922SIlya Dryomov { 253388bc1922SIlya Dryomov struct ceph_osd_request *req = 253488bc1922SIlya Dryomov container_of(work, struct ceph_osd_request, r_complete_work); 253588bc1922SIlya Dryomov 253688bc1922SIlya Dryomov __complete_request(req); 25370bbfdfe8SIlya Dryomov } 25380bbfdfe8SIlya Dryomov 25394609245eSIlya Dryomov /* 2540b18b9550SIlya Dryomov * This is open-coded in handle_reply(). 25414609245eSIlya Dryomov */ 25424609245eSIlya Dryomov static void complete_request(struct ceph_osd_request *req, int err) 25434609245eSIlya Dryomov { 25444609245eSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 25454609245eSIlya Dryomov 25464609245eSIlya Dryomov req->r_result = err; 254745ee2c1dSIlya Dryomov finish_request(req); 254888bc1922SIlya Dryomov 254988bc1922SIlya Dryomov INIT_WORK(&req->r_complete_work, complete_request_workfn); 255088bc1922SIlya Dryomov queue_work(req->r_osdc->completion_wq, &req->r_complete_work); 25514609245eSIlya Dryomov } 25524609245eSIlya Dryomov 25534609245eSIlya Dryomov static void cancel_map_check(struct ceph_osd_request *req) 25544609245eSIlya Dryomov { 25554609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 25564609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 25574609245eSIlya Dryomov 25584609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 25594609245eSIlya Dryomov 25604609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 25614609245eSIlya Dryomov if (!lookup_req) 25624609245eSIlya Dryomov return; 25634609245eSIlya Dryomov 25644609245eSIlya Dryomov WARN_ON(lookup_req != req); 25654609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 25664609245eSIlya Dryomov ceph_osdc_put_request(req); 25674609245eSIlya Dryomov } 25684609245eSIlya Dryomov 25695aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 25705aea3dcdSIlya Dryomov { 25715aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 25725aea3dcdSIlya Dryomov 25734609245eSIlya Dryomov cancel_map_check(req); 257445ee2c1dSIlya Dryomov finish_request(req); 2575b18b9550SIlya Dryomov complete_all(&req->r_completion); 2576c297eb42SIlya Dryomov ceph_osdc_put_request(req); 25775aea3dcdSIlya Dryomov } 25785aea3dcdSIlya Dryomov 25797cc5e38fSIlya Dryomov static void abort_request(struct ceph_osd_request *req, int err) 25807cc5e38fSIlya Dryomov { 25817cc5e38fSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 25827cc5e38fSIlya Dryomov 25837cc5e38fSIlya Dryomov cancel_map_check(req); 25847cc5e38fSIlya Dryomov complete_request(req, err); 25857cc5e38fSIlya Dryomov } 25867cc5e38fSIlya Dryomov 258766850df5SIlya Dryomov static int abort_fn(struct ceph_osd_request *req, void *arg) 258866850df5SIlya Dryomov { 258966850df5SIlya Dryomov int err = *(int *)arg; 259066850df5SIlya Dryomov 259166850df5SIlya Dryomov abort_request(req, err); 259266850df5SIlya Dryomov return 0; /* continue iteration */ 259366850df5SIlya Dryomov } 259466850df5SIlya Dryomov 259566850df5SIlya Dryomov /* 259666850df5SIlya Dryomov * Abort all in-flight requests with @err and arrange for all future 259766850df5SIlya Dryomov * requests to be failed immediately. 259866850df5SIlya Dryomov */ 259966850df5SIlya Dryomov void ceph_osdc_abort_requests(struct ceph_osd_client *osdc, int err) 260066850df5SIlya Dryomov { 260166850df5SIlya Dryomov dout("%s osdc %p err %d\n", __func__, osdc, err); 260266850df5SIlya Dryomov down_write(&osdc->lock); 260366850df5SIlya Dryomov for_each_request(osdc, abort_fn, &err); 260466850df5SIlya Dryomov osdc->abort_err = err; 260566850df5SIlya Dryomov up_write(&osdc->lock); 260666850df5SIlya Dryomov } 260766850df5SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_abort_requests); 260866850df5SIlya Dryomov 26092cef0ba8SYan, Zheng void ceph_osdc_clear_abort_err(struct ceph_osd_client *osdc) 26102cef0ba8SYan, Zheng { 26112cef0ba8SYan, Zheng down_write(&osdc->lock); 26122cef0ba8SYan, Zheng osdc->abort_err = 0; 26132cef0ba8SYan, Zheng up_write(&osdc->lock); 26142cef0ba8SYan, Zheng } 26152cef0ba8SYan, Zheng EXPORT_SYMBOL(ceph_osdc_clear_abort_err); 26162cef0ba8SYan, Zheng 261758eb7932SJeff Layton static void update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 261858eb7932SJeff Layton { 261958eb7932SJeff Layton if (likely(eb > osdc->epoch_barrier)) { 262058eb7932SJeff Layton dout("updating epoch_barrier from %u to %u\n", 262158eb7932SJeff Layton osdc->epoch_barrier, eb); 262258eb7932SJeff Layton osdc->epoch_barrier = eb; 262358eb7932SJeff Layton /* Request map if we're not to the barrier yet */ 262458eb7932SJeff Layton if (eb > osdc->osdmap->epoch) 262558eb7932SJeff Layton maybe_request_map(osdc); 262658eb7932SJeff Layton } 262758eb7932SJeff Layton } 262858eb7932SJeff Layton 262958eb7932SJeff Layton void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 263058eb7932SJeff Layton { 263158eb7932SJeff Layton down_read(&osdc->lock); 263258eb7932SJeff Layton if (unlikely(eb > osdc->epoch_barrier)) { 263358eb7932SJeff Layton up_read(&osdc->lock); 263458eb7932SJeff Layton down_write(&osdc->lock); 263558eb7932SJeff Layton update_epoch_barrier(osdc, eb); 263658eb7932SJeff Layton up_write(&osdc->lock); 263758eb7932SJeff Layton } else { 263858eb7932SJeff Layton up_read(&osdc->lock); 263958eb7932SJeff Layton } 264058eb7932SJeff Layton } 264158eb7932SJeff Layton EXPORT_SYMBOL(ceph_osdc_update_epoch_barrier); 264258eb7932SJeff Layton 2643fc36d0a4SJeff Layton /* 26444eea0fefSIlya Dryomov * We can end up releasing caps as a result of abort_request(). 26454eea0fefSIlya Dryomov * In that case, we probably want to ensure that the cap release message 26464eea0fefSIlya Dryomov * has an updated epoch barrier in it, so set the epoch barrier prior to 26474eea0fefSIlya Dryomov * aborting the first request. 26484eea0fefSIlya Dryomov */ 26494eea0fefSIlya Dryomov static int abort_on_full_fn(struct ceph_osd_request *req, void *arg) 26504eea0fefSIlya Dryomov { 26514eea0fefSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 26524eea0fefSIlya Dryomov bool *victims = arg; 26534eea0fefSIlya Dryomov 2654c843d13cSIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 26554eea0fefSIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2656690f951dSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 26574eea0fefSIlya Dryomov if (!*victims) { 26584eea0fefSIlya Dryomov update_epoch_barrier(osdc, osdc->osdmap->epoch); 26594eea0fefSIlya Dryomov *victims = true; 26604eea0fefSIlya Dryomov } 26614eea0fefSIlya Dryomov abort_request(req, -ENOSPC); 26624eea0fefSIlya Dryomov } 26634eea0fefSIlya Dryomov 26644eea0fefSIlya Dryomov return 0; /* continue iteration */ 26654eea0fefSIlya Dryomov } 26664eea0fefSIlya Dryomov 26674eea0fefSIlya Dryomov /* 2668fc36d0a4SJeff Layton * Drop all pending requests that are stalled waiting on a full condition to 266958eb7932SJeff Layton * clear, and complete them with ENOSPC as the return code. Set the 267058eb7932SJeff Layton * osdc->epoch_barrier to the latest map epoch that we've seen if any were 267158eb7932SJeff Layton * cancelled. 2672fc36d0a4SJeff Layton */ 2673fc36d0a4SJeff Layton static void ceph_osdc_abort_on_full(struct ceph_osd_client *osdc) 2674fc36d0a4SJeff Layton { 267558eb7932SJeff Layton bool victims = false; 2676fc36d0a4SJeff Layton 267702b2f549SDongsheng Yang if (ceph_test_opt(osdc->client, ABORT_ON_FULL) && 2678c843d13cSIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || have_pool_full(osdc))) 26794eea0fefSIlya Dryomov for_each_request(osdc, abort_on_full_fn, &victims); 2680fc36d0a4SJeff Layton } 2681fc36d0a4SJeff Layton 26824609245eSIlya Dryomov static void check_pool_dne(struct ceph_osd_request *req) 26834609245eSIlya Dryomov { 26844609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 26854609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 26864609245eSIlya Dryomov 26874609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 26884609245eSIlya Dryomov WARN_ON(!map->epoch); 26894609245eSIlya Dryomov 26904609245eSIlya Dryomov if (req->r_attempts) { 26914609245eSIlya Dryomov /* 26924609245eSIlya Dryomov * We sent a request earlier, which means that 26934609245eSIlya Dryomov * previously the pool existed, and now it does not 26944609245eSIlya Dryomov * (i.e., it was deleted). 26954609245eSIlya Dryomov */ 26964609245eSIlya Dryomov req->r_map_dne_bound = map->epoch; 26974609245eSIlya Dryomov dout("%s req %p tid %llu pool disappeared\n", __func__, req, 26984609245eSIlya Dryomov req->r_tid); 26994609245eSIlya Dryomov } else { 27004609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, 27014609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, map->epoch); 27024609245eSIlya Dryomov } 27034609245eSIlya Dryomov 27044609245eSIlya Dryomov if (req->r_map_dne_bound) { 27054609245eSIlya Dryomov if (map->epoch >= req->r_map_dne_bound) { 27064609245eSIlya Dryomov /* we had a new enough map */ 27074609245eSIlya Dryomov pr_info_ratelimited("tid %llu pool does not exist\n", 27084609245eSIlya Dryomov req->r_tid); 27094609245eSIlya Dryomov complete_request(req, -ENOENT); 27104609245eSIlya Dryomov } 27114609245eSIlya Dryomov } else { 27124609245eSIlya Dryomov send_map_check(req); 27134609245eSIlya Dryomov } 27144609245eSIlya Dryomov } 27154609245eSIlya Dryomov 27164609245eSIlya Dryomov static void map_check_cb(struct ceph_mon_generic_request *greq) 27174609245eSIlya Dryomov { 27184609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 27194609245eSIlya Dryomov struct ceph_osd_request *req; 27204609245eSIlya Dryomov u64 tid = greq->private_data; 27214609245eSIlya Dryomov 27224609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 27234609245eSIlya Dryomov 27244609245eSIlya Dryomov down_write(&osdc->lock); 27254609245eSIlya Dryomov req = lookup_request_mc(&osdc->map_checks, tid); 27264609245eSIlya Dryomov if (!req) { 27274609245eSIlya Dryomov dout("%s tid %llu dne\n", __func__, tid); 27284609245eSIlya Dryomov goto out_unlock; 27294609245eSIlya Dryomov } 27304609245eSIlya Dryomov 27314609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, 27324609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, greq->u.newest); 27334609245eSIlya Dryomov if (!req->r_map_dne_bound) 27344609245eSIlya Dryomov req->r_map_dne_bound = greq->u.newest; 27354609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 27364609245eSIlya Dryomov check_pool_dne(req); 27374609245eSIlya Dryomov 27384609245eSIlya Dryomov ceph_osdc_put_request(req); 27394609245eSIlya Dryomov out_unlock: 27404609245eSIlya Dryomov up_write(&osdc->lock); 27414609245eSIlya Dryomov } 27424609245eSIlya Dryomov 27434609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req) 27444609245eSIlya Dryomov { 27454609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 27464609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 27474609245eSIlya Dryomov int ret; 27484609245eSIlya Dryomov 27494609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 27504609245eSIlya Dryomov 27514609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 27524609245eSIlya Dryomov if (lookup_req) { 27534609245eSIlya Dryomov WARN_ON(lookup_req != req); 27544609245eSIlya Dryomov return; 27554609245eSIlya Dryomov } 27564609245eSIlya Dryomov 27574609245eSIlya Dryomov ceph_osdc_get_request(req); 27584609245eSIlya Dryomov insert_request_mc(&osdc->map_checks, req); 27594609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 27604609245eSIlya Dryomov map_check_cb, req->r_tid); 27614609245eSIlya Dryomov WARN_ON(ret); 27624609245eSIlya Dryomov } 27634609245eSIlya Dryomov 27640bbfdfe8SIlya Dryomov /* 2765922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 2766922dab61SIlya Dryomov */ 2767922dab61SIlya Dryomov static void linger_release(struct kref *kref) 2768922dab61SIlya Dryomov { 2769922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2770922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 2771922dab61SIlya Dryomov 2772922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 2773922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 2774922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 2775922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 27764609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); 2777922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 2778b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lreq->pending_lworks)); 2779922dab61SIlya Dryomov WARN_ON(lreq->osd); 2780922dab61SIlya Dryomov 278175dbb685SIlya Dryomov if (lreq->request_pl) 278275dbb685SIlya Dryomov ceph_pagelist_release(lreq->request_pl); 278375dbb685SIlya Dryomov if (lreq->notify_id_pages) 278475dbb685SIlya Dryomov ceph_release_page_vector(lreq->notify_id_pages, 1); 278575dbb685SIlya Dryomov 2786922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 2787922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 2788922dab61SIlya Dryomov target_destroy(&lreq->t); 2789922dab61SIlya Dryomov kfree(lreq); 2790922dab61SIlya Dryomov } 2791922dab61SIlya Dryomov 2792922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 2793922dab61SIlya Dryomov { 2794922dab61SIlya Dryomov if (lreq) 2795922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 2796922dab61SIlya Dryomov } 2797922dab61SIlya Dryomov 2798922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2799922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 2800922dab61SIlya Dryomov { 2801922dab61SIlya Dryomov kref_get(&lreq->kref); 2802922dab61SIlya Dryomov return lreq; 2803922dab61SIlya Dryomov } 2804922dab61SIlya Dryomov 2805922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2806922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 2807922dab61SIlya Dryomov { 2808922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2809922dab61SIlya Dryomov 2810922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 2811922dab61SIlya Dryomov if (!lreq) 2812922dab61SIlya Dryomov return NULL; 2813922dab61SIlya Dryomov 2814922dab61SIlya Dryomov kref_init(&lreq->kref); 2815922dab61SIlya Dryomov mutex_init(&lreq->lock); 2816922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 2817922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 28184609245eSIlya Dryomov RB_CLEAR_NODE(&lreq->mc_node); 2819922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 2820b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lreq->pending_lworks); 2821922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 282219079203SIlya Dryomov init_completion(&lreq->notify_finish_wait); 2823922dab61SIlya Dryomov 2824922dab61SIlya Dryomov lreq->osdc = osdc; 2825922dab61SIlya Dryomov target_init(&lreq->t); 2826922dab61SIlya Dryomov 2827922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 2828922dab61SIlya Dryomov return lreq; 2829922dab61SIlya Dryomov } 2830922dab61SIlya Dryomov 2831922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 2832922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 28334609245eSIlya Dryomov DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) 2834922dab61SIlya Dryomov 2835922dab61SIlya Dryomov /* 2836922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 2837922dab61SIlya Dryomov * 2838922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 2839922dab61SIlya Dryomov */ 2840922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 2841922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2842922dab61SIlya Dryomov { 2843922dab61SIlya Dryomov verify_osd_locked(osd); 2844922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 2845922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2846922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2847922dab61SIlya Dryomov 2848922dab61SIlya Dryomov if (!osd_homeless(osd)) 2849922dab61SIlya Dryomov __remove_osd_from_lru(osd); 2850922dab61SIlya Dryomov else 2851922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 2852922dab61SIlya Dryomov 2853922dab61SIlya Dryomov get_osd(osd); 2854922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 2855922dab61SIlya Dryomov lreq->osd = osd; 2856922dab61SIlya Dryomov } 2857922dab61SIlya Dryomov 2858922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 2859922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2860922dab61SIlya Dryomov { 2861922dab61SIlya Dryomov verify_osd_locked(osd); 2862922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 2863922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2864922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2865922dab61SIlya Dryomov 2866922dab61SIlya Dryomov lreq->osd = NULL; 2867922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 2868922dab61SIlya Dryomov put_osd(osd); 2869922dab61SIlya Dryomov 2870922dab61SIlya Dryomov if (!osd_homeless(osd)) 2871922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 2872922dab61SIlya Dryomov else 2873922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 2874922dab61SIlya Dryomov } 2875922dab61SIlya Dryomov 2876922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 2877922dab61SIlya Dryomov { 2878922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 2879922dab61SIlya Dryomov 2880922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 2881922dab61SIlya Dryomov } 2882922dab61SIlya Dryomov 2883922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 2884922dab61SIlya Dryomov { 2885922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2886922dab61SIlya Dryomov bool registered; 2887922dab61SIlya Dryomov 2888922dab61SIlya Dryomov down_read(&osdc->lock); 2889922dab61SIlya Dryomov registered = __linger_registered(lreq); 2890922dab61SIlya Dryomov up_read(&osdc->lock); 2891922dab61SIlya Dryomov 2892922dab61SIlya Dryomov return registered; 2893922dab61SIlya Dryomov } 2894922dab61SIlya Dryomov 2895922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 2896922dab61SIlya Dryomov { 2897922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2898922dab61SIlya Dryomov 2899922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2900922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 2901922dab61SIlya Dryomov 2902922dab61SIlya Dryomov linger_get(lreq); 2903922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 2904922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 2905922dab61SIlya Dryomov } 2906922dab61SIlya Dryomov 2907922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 2908922dab61SIlya Dryomov { 2909922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2910922dab61SIlya Dryomov 2911922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2912922dab61SIlya Dryomov 2913922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 2914922dab61SIlya Dryomov linger_put(lreq); 2915922dab61SIlya Dryomov } 2916922dab61SIlya Dryomov 2917922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 2918922dab61SIlya Dryomov { 2919922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2920922dab61SIlya Dryomov 2921922dab61SIlya Dryomov WARN_ON(!req->r_linger); 2922922dab61SIlya Dryomov cancel_request(req); 2923922dab61SIlya Dryomov linger_put(lreq); 2924922dab61SIlya Dryomov } 2925922dab61SIlya Dryomov 2926922dab61SIlya Dryomov struct linger_work { 2927922dab61SIlya Dryomov struct work_struct work; 2928922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2929b07d3c4bSIlya Dryomov struct list_head pending_item; 2930b07d3c4bSIlya Dryomov unsigned long queued_stamp; 2931922dab61SIlya Dryomov 2932922dab61SIlya Dryomov union { 2933922dab61SIlya Dryomov struct { 2934922dab61SIlya Dryomov u64 notify_id; 2935922dab61SIlya Dryomov u64 notifier_id; 2936922dab61SIlya Dryomov void *payload; /* points into @msg front */ 2937922dab61SIlya Dryomov size_t payload_len; 2938922dab61SIlya Dryomov 2939922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 2940922dab61SIlya Dryomov } notify; 2941922dab61SIlya Dryomov struct { 2942922dab61SIlya Dryomov int err; 2943922dab61SIlya Dryomov } error; 2944922dab61SIlya Dryomov }; 2945922dab61SIlya Dryomov }; 2946922dab61SIlya Dryomov 2947922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 2948922dab61SIlya Dryomov work_func_t workfn) 2949922dab61SIlya Dryomov { 2950922dab61SIlya Dryomov struct linger_work *lwork; 2951922dab61SIlya Dryomov 2952922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 2953922dab61SIlya Dryomov if (!lwork) 2954922dab61SIlya Dryomov return NULL; 2955922dab61SIlya Dryomov 2956922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 2957b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lwork->pending_item); 2958922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 2959922dab61SIlya Dryomov 2960922dab61SIlya Dryomov return lwork; 2961922dab61SIlya Dryomov } 2962922dab61SIlya Dryomov 2963922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 2964922dab61SIlya Dryomov { 2965922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2966922dab61SIlya Dryomov 2967b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 2968b07d3c4bSIlya Dryomov list_del(&lwork->pending_item); 2969b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 2970b07d3c4bSIlya Dryomov 2971922dab61SIlya Dryomov linger_put(lreq); 2972922dab61SIlya Dryomov kfree(lwork); 2973922dab61SIlya Dryomov } 2974922dab61SIlya Dryomov 2975922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 2976922dab61SIlya Dryomov { 2977922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2978922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2979922dab61SIlya Dryomov 2980922dab61SIlya Dryomov verify_lreq_locked(lreq); 2981b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lwork->pending_item)); 2982b07d3c4bSIlya Dryomov 2983b07d3c4bSIlya Dryomov lwork->queued_stamp = jiffies; 2984b07d3c4bSIlya Dryomov list_add_tail(&lwork->pending_item, &lreq->pending_lworks); 2985922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 2986922dab61SIlya Dryomov } 2987922dab61SIlya Dryomov 2988922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 2989922dab61SIlya Dryomov { 2990922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2991922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2992922dab61SIlya Dryomov 2993922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2994922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2995922dab61SIlya Dryomov goto out; 2996922dab61SIlya Dryomov } 2997922dab61SIlya Dryomov 299819079203SIlya Dryomov WARN_ON(!lreq->is_watch); 2999922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 3000922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 3001922dab61SIlya Dryomov lwork->notify.payload_len); 3002922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 3003922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 3004922dab61SIlya Dryomov lwork->notify.payload_len); 3005922dab61SIlya Dryomov 3006922dab61SIlya Dryomov out: 3007922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 3008922dab61SIlya Dryomov lwork_free(lwork); 3009922dab61SIlya Dryomov } 3010922dab61SIlya Dryomov 3011922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 3012922dab61SIlya Dryomov { 3013922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 3014922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 3015922dab61SIlya Dryomov 3016922dab61SIlya Dryomov if (!linger_registered(lreq)) { 3017922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 3018922dab61SIlya Dryomov goto out; 3019922dab61SIlya Dryomov } 3020922dab61SIlya Dryomov 3021922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 3022922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 3023922dab61SIlya Dryomov 3024922dab61SIlya Dryomov out: 3025922dab61SIlya Dryomov lwork_free(lwork); 3026922dab61SIlya Dryomov } 3027922dab61SIlya Dryomov 3028922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 3029922dab61SIlya Dryomov { 3030922dab61SIlya Dryomov struct linger_work *lwork; 3031922dab61SIlya Dryomov 3032922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 3033922dab61SIlya Dryomov if (!lwork) { 3034922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 3035922dab61SIlya Dryomov return; 3036922dab61SIlya Dryomov } 3037922dab61SIlya Dryomov 3038922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 3039922dab61SIlya Dryomov lwork_queue(lwork); 3040922dab61SIlya Dryomov } 3041922dab61SIlya Dryomov 3042922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 3043922dab61SIlya Dryomov int result) 3044922dab61SIlya Dryomov { 3045922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 3046922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 3047922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 3048922dab61SIlya Dryomov } 3049922dab61SIlya Dryomov } 3050922dab61SIlya Dryomov 3051922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 3052922dab61SIlya Dryomov { 3053922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 3054922dab61SIlya Dryomov 3055922dab61SIlya Dryomov mutex_lock(&lreq->lock); 305675dbb685SIlya Dryomov if (req != lreq->reg_req) { 305775dbb685SIlya Dryomov dout("%s lreq %p linger_id %llu unknown req (%p != %p)\n", 305875dbb685SIlya Dryomov __func__, lreq, lreq->linger_id, req, lreq->reg_req); 305975dbb685SIlya Dryomov goto out; 306075dbb685SIlya Dryomov } 306175dbb685SIlya Dryomov 3062922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 3063922dab61SIlya Dryomov lreq->linger_id, req->r_result); 3064922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 3065922dab61SIlya Dryomov lreq->committed = true; 3066922dab61SIlya Dryomov 306719079203SIlya Dryomov if (!lreq->is_watch) { 306819079203SIlya Dryomov struct ceph_osd_data *osd_data = 306919079203SIlya Dryomov osd_req_op_data(req, 0, notify, response_data); 307019079203SIlya Dryomov void *p = page_address(osd_data->pages[0]); 307119079203SIlya Dryomov 307219079203SIlya Dryomov WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || 307319079203SIlya Dryomov osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); 307419079203SIlya Dryomov 307519079203SIlya Dryomov /* make note of the notify_id */ 307619079203SIlya Dryomov if (req->r_ops[0].outdata_len >= sizeof(u64)) { 307719079203SIlya Dryomov lreq->notify_id = ceph_decode_64(&p); 307819079203SIlya Dryomov dout("lreq %p notify_id %llu\n", lreq, 307919079203SIlya Dryomov lreq->notify_id); 308019079203SIlya Dryomov } else { 308119079203SIlya Dryomov dout("lreq %p no notify_id\n", lreq); 308219079203SIlya Dryomov } 308319079203SIlya Dryomov } 308419079203SIlya Dryomov 308575dbb685SIlya Dryomov out: 3086922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3087922dab61SIlya Dryomov linger_put(lreq); 3088922dab61SIlya Dryomov } 3089922dab61SIlya Dryomov 3090922dab61SIlya Dryomov static int normalize_watch_error(int err) 3091922dab61SIlya Dryomov { 3092922dab61SIlya Dryomov /* 3093922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 3094922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 3095922dab61SIlya Dryomov * the delete appear the same to the user. 3096922dab61SIlya Dryomov */ 3097922dab61SIlya Dryomov if (err == -ENOENT) 3098922dab61SIlya Dryomov err = -ENOTCONN; 3099922dab61SIlya Dryomov 3100922dab61SIlya Dryomov return err; 3101922dab61SIlya Dryomov } 3102922dab61SIlya Dryomov 3103922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 3104922dab61SIlya Dryomov { 3105922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 3106922dab61SIlya Dryomov 3107922dab61SIlya Dryomov mutex_lock(&lreq->lock); 310875dbb685SIlya Dryomov if (req != lreq->reg_req) { 310975dbb685SIlya Dryomov dout("%s lreq %p linger_id %llu unknown req (%p != %p)\n", 311075dbb685SIlya Dryomov __func__, lreq, lreq->linger_id, req, lreq->reg_req); 311175dbb685SIlya Dryomov goto out; 311275dbb685SIlya Dryomov } 311375dbb685SIlya Dryomov 3114922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 3115922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 3116922dab61SIlya Dryomov if (req->r_result < 0) { 3117922dab61SIlya Dryomov if (!lreq->last_error) { 3118922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 3119922dab61SIlya Dryomov queue_watch_error(lreq); 3120922dab61SIlya Dryomov } 3121922dab61SIlya Dryomov } 3122922dab61SIlya Dryomov 312375dbb685SIlya Dryomov out: 3124922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3125922dab61SIlya Dryomov linger_put(lreq); 3126922dab61SIlya Dryomov } 3127922dab61SIlya Dryomov 3128922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 3129922dab61SIlya Dryomov { 313075dbb685SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 313175dbb685SIlya Dryomov struct ceph_osd_request *req; 313275dbb685SIlya Dryomov int ret; 3133922dab61SIlya Dryomov 313475dbb685SIlya Dryomov verify_osdc_wrlocked(osdc); 313575dbb685SIlya Dryomov mutex_lock(&lreq->lock); 3136922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 3137922dab61SIlya Dryomov 313875dbb685SIlya Dryomov if (lreq->reg_req) { 313975dbb685SIlya Dryomov if (lreq->reg_req->r_osd) 314075dbb685SIlya Dryomov cancel_linger_request(lreq->reg_req); 314175dbb685SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 314275dbb685SIlya Dryomov } 3143922dab61SIlya Dryomov 314475dbb685SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, true, GFP_NOIO); 314575dbb685SIlya Dryomov BUG_ON(!req); 314675dbb685SIlya Dryomov 31475133ba8fSIlya Dryomov target_copy(&req->r_t, &lreq->t); 3148922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 3149922dab61SIlya Dryomov 315019079203SIlya Dryomov if (lreq->is_watch && lreq->committed) { 315175dbb685SIlya Dryomov osd_req_op_watch_init(req, 0, CEPH_OSD_WATCH_OP_RECONNECT, 315275dbb685SIlya Dryomov lreq->linger_id, ++lreq->register_gen); 3153922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 315475dbb685SIlya Dryomov req->r_ops[0].watch.gen); 3155922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 3156922dab61SIlya Dryomov } else { 315775dbb685SIlya Dryomov if (lreq->is_watch) { 315875dbb685SIlya Dryomov osd_req_op_watch_init(req, 0, CEPH_OSD_WATCH_OP_WATCH, 315975dbb685SIlya Dryomov lreq->linger_id, 0); 316075dbb685SIlya Dryomov } else { 316119079203SIlya Dryomov lreq->notify_id = 0; 316275dbb685SIlya Dryomov 316375dbb685SIlya Dryomov refcount_inc(&lreq->request_pl->refcnt); 316475dbb685SIlya Dryomov osd_req_op_notify_init(req, 0, lreq->linger_id, 316575dbb685SIlya Dryomov lreq->request_pl); 316675dbb685SIlya Dryomov ceph_osd_data_pages_init( 316775dbb685SIlya Dryomov osd_req_op_data(req, 0, notify, response_data), 316875dbb685SIlya Dryomov lreq->notify_id_pages, PAGE_SIZE, 0, false, false); 316975dbb685SIlya Dryomov } 3170922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 3171922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 3172922dab61SIlya Dryomov } 317375dbb685SIlya Dryomov 317475dbb685SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 317575dbb685SIlya Dryomov BUG_ON(ret); 3176922dab61SIlya Dryomov 3177922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 3178922dab61SIlya Dryomov req->r_linger = true; 317975dbb685SIlya Dryomov lreq->reg_req = req; 318075dbb685SIlya Dryomov mutex_unlock(&lreq->lock); 3181922dab61SIlya Dryomov 3182922dab61SIlya Dryomov submit_request(req, true); 3183922dab61SIlya Dryomov } 3184922dab61SIlya Dryomov 3185922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 3186922dab61SIlya Dryomov { 3187922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 3188922dab61SIlya Dryomov 3189922dab61SIlya Dryomov mutex_lock(&lreq->lock); 319075dbb685SIlya Dryomov if (req != lreq->ping_req) { 319175dbb685SIlya Dryomov dout("%s lreq %p linger_id %llu unknown req (%p != %p)\n", 319275dbb685SIlya Dryomov __func__, lreq, lreq->linger_id, req, lreq->ping_req); 319375dbb685SIlya Dryomov goto out; 319475dbb685SIlya Dryomov } 319575dbb685SIlya Dryomov 3196922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 3197922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 3198922dab61SIlya Dryomov lreq->last_error); 3199922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 3200b07d3c4bSIlya Dryomov if (!req->r_result) { 3201b07d3c4bSIlya Dryomov lreq->watch_valid_thru = lreq->ping_sent; 3202b07d3c4bSIlya Dryomov } else if (!lreq->last_error) { 3203922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 3204922dab61SIlya Dryomov queue_watch_error(lreq); 3205922dab61SIlya Dryomov } 3206922dab61SIlya Dryomov } else { 3207922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 3208922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 3209922dab61SIlya Dryomov } 3210922dab61SIlya Dryomov 321175dbb685SIlya Dryomov out: 3212922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3213922dab61SIlya Dryomov linger_put(lreq); 3214922dab61SIlya Dryomov } 3215922dab61SIlya Dryomov 3216922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 3217922dab61SIlya Dryomov { 3218922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 321975dbb685SIlya Dryomov struct ceph_osd_request *req; 322075dbb685SIlya Dryomov int ret; 3221922dab61SIlya Dryomov 3222b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 3223922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 3224922dab61SIlya Dryomov return; 3225922dab61SIlya Dryomov } 3226922dab61SIlya Dryomov 3227922dab61SIlya Dryomov lreq->ping_sent = jiffies; 3228922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 3229922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 3230922dab61SIlya Dryomov lreq->register_gen); 3231922dab61SIlya Dryomov 323275dbb685SIlya Dryomov if (lreq->ping_req) { 323375dbb685SIlya Dryomov if (lreq->ping_req->r_osd) 323475dbb685SIlya Dryomov cancel_linger_request(lreq->ping_req); 323575dbb685SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 323675dbb685SIlya Dryomov } 3237922dab61SIlya Dryomov 323875dbb685SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, true, GFP_NOIO); 323975dbb685SIlya Dryomov BUG_ON(!req); 324075dbb685SIlya Dryomov 3241922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 324275dbb685SIlya Dryomov osd_req_op_watch_init(req, 0, CEPH_OSD_WATCH_OP_PING, lreq->linger_id, 324375dbb685SIlya Dryomov lreq->register_gen); 3244922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 324575dbb685SIlya Dryomov 324675dbb685SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 324775dbb685SIlya Dryomov BUG_ON(ret); 324875dbb685SIlya Dryomov 3249922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 3250922dab61SIlya Dryomov req->r_linger = true; 325175dbb685SIlya Dryomov lreq->ping_req = req; 3252922dab61SIlya Dryomov 3253922dab61SIlya Dryomov ceph_osdc_get_request(req); 3254922dab61SIlya Dryomov account_request(req); 3255922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 3256922dab61SIlya Dryomov link_request(lreq->osd, req); 3257922dab61SIlya Dryomov send_request(req); 3258922dab61SIlya Dryomov } 3259922dab61SIlya Dryomov 3260922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 3261922dab61SIlya Dryomov { 3262922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3263922dab61SIlya Dryomov struct ceph_osd *osd; 3264922dab61SIlya Dryomov 326581c65213SIlya Dryomov down_write(&osdc->lock); 326681c65213SIlya Dryomov linger_register(lreq); 326781c65213SIlya Dryomov 32688edf84baSIlya Dryomov calc_target(osdc, &lreq->t, false); 3269922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3270922dab61SIlya Dryomov link_linger(osd, lreq); 3271922dab61SIlya Dryomov 3272922dab61SIlya Dryomov send_linger(lreq); 327381c65213SIlya Dryomov up_write(&osdc->lock); 3274922dab61SIlya Dryomov } 3275922dab61SIlya Dryomov 32764609245eSIlya Dryomov static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) 32774609245eSIlya Dryomov { 32784609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 32794609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 32804609245eSIlya Dryomov 32814609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 32824609245eSIlya Dryomov 32834609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 32844609245eSIlya Dryomov lreq->linger_id); 32854609245eSIlya Dryomov if (!lookup_lreq) 32864609245eSIlya Dryomov return; 32874609245eSIlya Dryomov 32884609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 32894609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 32904609245eSIlya Dryomov linger_put(lreq); 32914609245eSIlya Dryomov } 32924609245eSIlya Dryomov 3293922dab61SIlya Dryomov /* 3294922dab61SIlya Dryomov * @lreq has to be both registered and linked. 3295922dab61SIlya Dryomov */ 3296922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 3297922dab61SIlya Dryomov { 329875dbb685SIlya Dryomov if (lreq->ping_req && lreq->ping_req->r_osd) 3299922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 330075dbb685SIlya Dryomov if (lreq->reg_req && lreq->reg_req->r_osd) 3301922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 33024609245eSIlya Dryomov cancel_linger_map_check(lreq); 3303922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3304922dab61SIlya Dryomov linger_unregister(lreq); 3305922dab61SIlya Dryomov } 3306922dab61SIlya Dryomov 3307922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 3308922dab61SIlya Dryomov { 3309922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3310922dab61SIlya Dryomov 3311922dab61SIlya Dryomov down_write(&osdc->lock); 3312922dab61SIlya Dryomov if (__linger_registered(lreq)) 3313922dab61SIlya Dryomov __linger_cancel(lreq); 3314922dab61SIlya Dryomov up_write(&osdc->lock); 3315922dab61SIlya Dryomov } 3316922dab61SIlya Dryomov 33174609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq); 33184609245eSIlya Dryomov 33194609245eSIlya Dryomov static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) 33204609245eSIlya Dryomov { 33214609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 33224609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 33234609245eSIlya Dryomov 33244609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 33254609245eSIlya Dryomov WARN_ON(!map->epoch); 33264609245eSIlya Dryomov 33274609245eSIlya Dryomov if (lreq->register_gen) { 33284609245eSIlya Dryomov lreq->map_dne_bound = map->epoch; 33294609245eSIlya Dryomov dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, 33304609245eSIlya Dryomov lreq, lreq->linger_id); 33314609245eSIlya Dryomov } else { 33324609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", 33334609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 33344609245eSIlya Dryomov map->epoch); 33354609245eSIlya Dryomov } 33364609245eSIlya Dryomov 33374609245eSIlya Dryomov if (lreq->map_dne_bound) { 33384609245eSIlya Dryomov if (map->epoch >= lreq->map_dne_bound) { 33394609245eSIlya Dryomov /* we had a new enough map */ 33404609245eSIlya Dryomov pr_info("linger_id %llu pool does not exist\n", 33414609245eSIlya Dryomov lreq->linger_id); 33424609245eSIlya Dryomov linger_reg_commit_complete(lreq, -ENOENT); 33434609245eSIlya Dryomov __linger_cancel(lreq); 33444609245eSIlya Dryomov } 33454609245eSIlya Dryomov } else { 33464609245eSIlya Dryomov send_linger_map_check(lreq); 33474609245eSIlya Dryomov } 33484609245eSIlya Dryomov } 33494609245eSIlya Dryomov 33504609245eSIlya Dryomov static void linger_map_check_cb(struct ceph_mon_generic_request *greq) 33514609245eSIlya Dryomov { 33524609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 33534609245eSIlya Dryomov struct ceph_osd_linger_request *lreq; 33544609245eSIlya Dryomov u64 linger_id = greq->private_data; 33554609245eSIlya Dryomov 33564609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 33574609245eSIlya Dryomov 33584609245eSIlya Dryomov down_write(&osdc->lock); 33594609245eSIlya Dryomov lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); 33604609245eSIlya Dryomov if (!lreq) { 33614609245eSIlya Dryomov dout("%s linger_id %llu dne\n", __func__, linger_id); 33624609245eSIlya Dryomov goto out_unlock; 33634609245eSIlya Dryomov } 33644609245eSIlya Dryomov 33654609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", 33664609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 33674609245eSIlya Dryomov greq->u.newest); 33684609245eSIlya Dryomov if (!lreq->map_dne_bound) 33694609245eSIlya Dryomov lreq->map_dne_bound = greq->u.newest; 33704609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 33714609245eSIlya Dryomov check_linger_pool_dne(lreq); 33724609245eSIlya Dryomov 33734609245eSIlya Dryomov linger_put(lreq); 33744609245eSIlya Dryomov out_unlock: 33754609245eSIlya Dryomov up_write(&osdc->lock); 33764609245eSIlya Dryomov } 33774609245eSIlya Dryomov 33784609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq) 33794609245eSIlya Dryomov { 33804609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 33814609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 33824609245eSIlya Dryomov int ret; 33834609245eSIlya Dryomov 33844609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 33854609245eSIlya Dryomov 33864609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 33874609245eSIlya Dryomov lreq->linger_id); 33884609245eSIlya Dryomov if (lookup_lreq) { 33894609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 33904609245eSIlya Dryomov return; 33914609245eSIlya Dryomov } 33924609245eSIlya Dryomov 33934609245eSIlya Dryomov linger_get(lreq); 33944609245eSIlya Dryomov insert_linger_mc(&osdc->linger_map_checks, lreq); 33954609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 33964609245eSIlya Dryomov linger_map_check_cb, lreq->linger_id); 33974609245eSIlya Dryomov WARN_ON(ret); 33984609245eSIlya Dryomov } 33994609245eSIlya Dryomov 3400922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 3401922dab61SIlya Dryomov { 3402922dab61SIlya Dryomov int ret; 3403922dab61SIlya Dryomov 3404922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 3405e6e28432SIlya Dryomov ret = wait_for_completion_killable(&lreq->reg_commit_wait); 3406922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 3407922dab61SIlya Dryomov } 3408922dab61SIlya Dryomov 3409e6e28432SIlya Dryomov static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq, 3410e6e28432SIlya Dryomov unsigned long timeout) 341119079203SIlya Dryomov { 3412e6e28432SIlya Dryomov long left; 341319079203SIlya Dryomov 341419079203SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 3415e6e28432SIlya Dryomov left = wait_for_completion_killable_timeout(&lreq->notify_finish_wait, 3416e6e28432SIlya Dryomov ceph_timeout_jiffies(timeout)); 3417e6e28432SIlya Dryomov if (left <= 0) 3418e6e28432SIlya Dryomov left = left ?: -ETIMEDOUT; 3419e6e28432SIlya Dryomov else 3420e6e28432SIlya Dryomov left = lreq->notify_finish_error; /* completed */ 3421e6e28432SIlya Dryomov 3422e6e28432SIlya Dryomov return left; 342319079203SIlya Dryomov } 342419079203SIlya Dryomov 3425922dab61SIlya Dryomov /* 3426fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 3427fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 3428fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 3429fbca9635SIlya Dryomov * reset is detected. 34303d14c5d2SYehuda Sadeh */ 34313d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 34323d14c5d2SYehuda Sadeh { 34333d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 34343d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 3435a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 34365aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 34377cc5e38fSIlya Dryomov unsigned long expiry_cutoff = jiffies - opts->osd_request_timeout; 34385aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 34395aea3dcdSIlya Dryomov struct rb_node *n, *p; 34403d14c5d2SYehuda Sadeh 34415aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 34425aea3dcdSIlya Dryomov down_write(&osdc->lock); 34433d14c5d2SYehuda Sadeh 34443d14c5d2SYehuda Sadeh /* 34453d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 34463d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 34473d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 34483d14c5d2SYehuda Sadeh */ 34495aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 34505aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 34515aea3dcdSIlya Dryomov bool found = false; 34523d14c5d2SYehuda Sadeh 34537cc5e38fSIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 34545aea3dcdSIlya Dryomov struct ceph_osd_request *req = 34555aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 34565aea3dcdSIlya Dryomov 34577cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 34587cc5e38fSIlya Dryomov 34595aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 34605aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 34615aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 34625aea3dcdSIlya Dryomov found = true; 34635aea3dcdSIlya Dryomov } 34647cc5e38fSIlya Dryomov if (opts->osd_request_timeout && 34657cc5e38fSIlya Dryomov time_before(req->r_start_stamp, expiry_cutoff)) { 34667cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 34677cc5e38fSIlya Dryomov req->r_tid, osd->o_osd); 34687cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 34697cc5e38fSIlya Dryomov } 34705aea3dcdSIlya Dryomov } 3471922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 3472922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3473922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 3474922dab61SIlya Dryomov 3475922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 3476922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 3477922dab61SIlya Dryomov found = true; 3478922dab61SIlya Dryomov 3479922dab61SIlya Dryomov mutex_lock(&lreq->lock); 348019079203SIlya Dryomov if (lreq->is_watch && lreq->committed && !lreq->last_error) 3481922dab61SIlya Dryomov send_linger_ping(lreq); 3482922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3483922dab61SIlya Dryomov } 34845aea3dcdSIlya Dryomov 34855aea3dcdSIlya Dryomov if (found) 34863d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 34873d14c5d2SYehuda Sadeh } 34885aea3dcdSIlya Dryomov 34897cc5e38fSIlya Dryomov if (opts->osd_request_timeout) { 34907cc5e38fSIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 34917cc5e38fSIlya Dryomov struct ceph_osd_request *req = 34927cc5e38fSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 34937cc5e38fSIlya Dryomov 34947cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 34957cc5e38fSIlya Dryomov 34967cc5e38fSIlya Dryomov if (time_before(req->r_start_stamp, expiry_cutoff)) { 34977cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 34987cc5e38fSIlya Dryomov req->r_tid, osdc->homeless_osd.o_osd); 34997cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 35007cc5e38fSIlya Dryomov } 35017cc5e38fSIlya Dryomov } 35027cc5e38fSIlya Dryomov } 35037cc5e38fSIlya Dryomov 35045aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 35055aea3dcdSIlya Dryomov maybe_request_map(osdc); 35065aea3dcdSIlya Dryomov 35073d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 35085aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 35095aea3dcdSIlya Dryomov struct ceph_osd, 35103d14c5d2SYehuda Sadeh o_keepalive_item); 35113d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 35123d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 35133d14c5d2SYehuda Sadeh } 35143d14c5d2SYehuda Sadeh 35155aea3dcdSIlya Dryomov up_write(&osdc->lock); 3516fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 3517fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 35183d14c5d2SYehuda Sadeh } 35193d14c5d2SYehuda Sadeh 35203d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 35213d14c5d2SYehuda Sadeh { 35223d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 35233d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 35243d14c5d2SYehuda Sadeh osds_timeout_work.work); 3525a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 352642a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 35273d14c5d2SYehuda Sadeh 352842a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 35295aea3dcdSIlya Dryomov down_write(&osdc->lock); 353042a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 353142a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 353242a2c09fSIlya Dryomov break; 353342a2c09fSIlya Dryomov 35345aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 3535922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 35365aea3dcdSIlya Dryomov close_osd(osd); 353742a2c09fSIlya Dryomov } 353842a2c09fSIlya Dryomov 35395aea3dcdSIlya Dryomov up_write(&osdc->lock); 35403d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 35413d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 35423d14c5d2SYehuda Sadeh } 35433d14c5d2SYehuda Sadeh 3544205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 3545205ee118SIlya Dryomov struct ceph_object_locator *oloc) 3546205ee118SIlya Dryomov { 3547205ee118SIlya Dryomov u8 struct_v, struct_cv; 3548205ee118SIlya Dryomov u32 len; 3549205ee118SIlya Dryomov void *struct_end; 3550205ee118SIlya Dryomov int ret = 0; 3551205ee118SIlya Dryomov 3552205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3553205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3554205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3555205ee118SIlya Dryomov if (struct_v < 3) { 3556205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 3557205ee118SIlya Dryomov struct_v, struct_cv); 3558205ee118SIlya Dryomov goto e_inval; 3559205ee118SIlya Dryomov } 3560205ee118SIlya Dryomov if (struct_cv > 6) { 3561205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 3562205ee118SIlya Dryomov struct_v, struct_cv); 3563205ee118SIlya Dryomov goto e_inval; 3564205ee118SIlya Dryomov } 3565205ee118SIlya Dryomov len = ceph_decode_32(p); 3566205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3567205ee118SIlya Dryomov struct_end = *p + len; 3568205ee118SIlya Dryomov 3569205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 3570205ee118SIlya Dryomov *p += 4; /* skip preferred */ 3571205ee118SIlya Dryomov 3572205ee118SIlya Dryomov len = ceph_decode_32(p); 3573205ee118SIlya Dryomov if (len > 0) { 3574205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 3575205ee118SIlya Dryomov goto e_inval; 3576205ee118SIlya Dryomov } 3577205ee118SIlya Dryomov 3578205ee118SIlya Dryomov if (struct_v >= 5) { 3579cd08e0a2SYan, Zheng bool changed = false; 3580cd08e0a2SYan, Zheng 3581205ee118SIlya Dryomov len = ceph_decode_32(p); 3582205ee118SIlya Dryomov if (len > 0) { 358330c156d9SYan, Zheng ceph_decode_need(p, end, len, e_inval); 3584cd08e0a2SYan, Zheng if (!oloc->pool_ns || 3585cd08e0a2SYan, Zheng ceph_compare_string(oloc->pool_ns, *p, len)) 3586cd08e0a2SYan, Zheng changed = true; 358730c156d9SYan, Zheng *p += len; 3588cd08e0a2SYan, Zheng } else { 3589cd08e0a2SYan, Zheng if (oloc->pool_ns) 3590cd08e0a2SYan, Zheng changed = true; 3591cd08e0a2SYan, Zheng } 3592cd08e0a2SYan, Zheng if (changed) { 3593cd08e0a2SYan, Zheng /* redirect changes namespace */ 3594cd08e0a2SYan, Zheng pr_warn("ceph_object_locator::nspace is changed\n"); 3595cd08e0a2SYan, Zheng goto e_inval; 3596205ee118SIlya Dryomov } 3597205ee118SIlya Dryomov } 3598205ee118SIlya Dryomov 3599205ee118SIlya Dryomov if (struct_v >= 6) { 3600205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 3601205ee118SIlya Dryomov if (hash != -1) { 3602205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 3603205ee118SIlya Dryomov goto e_inval; 3604205ee118SIlya Dryomov } 3605205ee118SIlya Dryomov } 3606205ee118SIlya Dryomov 3607205ee118SIlya Dryomov /* skip the rest */ 3608205ee118SIlya Dryomov *p = struct_end; 3609205ee118SIlya Dryomov out: 3610205ee118SIlya Dryomov return ret; 3611205ee118SIlya Dryomov 3612205ee118SIlya Dryomov e_inval: 3613205ee118SIlya Dryomov ret = -EINVAL; 3614205ee118SIlya Dryomov goto out; 3615205ee118SIlya Dryomov } 3616205ee118SIlya Dryomov 3617205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 3618205ee118SIlya Dryomov struct ceph_request_redirect *redir) 3619205ee118SIlya Dryomov { 3620205ee118SIlya Dryomov u8 struct_v, struct_cv; 3621205ee118SIlya Dryomov u32 len; 3622205ee118SIlya Dryomov void *struct_end; 3623205ee118SIlya Dryomov int ret; 3624205ee118SIlya Dryomov 3625205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3626205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3627205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3628205ee118SIlya Dryomov if (struct_cv > 1) { 3629205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 3630205ee118SIlya Dryomov struct_v, struct_cv); 3631205ee118SIlya Dryomov goto e_inval; 3632205ee118SIlya Dryomov } 3633205ee118SIlya Dryomov len = ceph_decode_32(p); 3634205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3635205ee118SIlya Dryomov struct_end = *p + len; 3636205ee118SIlya Dryomov 3637205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 3638205ee118SIlya Dryomov if (ret) 3639205ee118SIlya Dryomov goto out; 3640205ee118SIlya Dryomov 3641205ee118SIlya Dryomov len = ceph_decode_32(p); 3642205ee118SIlya Dryomov if (len > 0) { 3643205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 3644205ee118SIlya Dryomov goto e_inval; 3645205ee118SIlya Dryomov } 3646205ee118SIlya Dryomov 3647205ee118SIlya Dryomov /* skip the rest */ 3648205ee118SIlya Dryomov *p = struct_end; 3649205ee118SIlya Dryomov out: 3650205ee118SIlya Dryomov return ret; 3651205ee118SIlya Dryomov 3652205ee118SIlya Dryomov e_inval: 3653205ee118SIlya Dryomov ret = -EINVAL; 3654205ee118SIlya Dryomov goto out; 3655205ee118SIlya Dryomov } 3656205ee118SIlya Dryomov 3657fe5da05eSIlya Dryomov struct MOSDOpReply { 3658fe5da05eSIlya Dryomov struct ceph_pg pgid; 3659fe5da05eSIlya Dryomov u64 flags; 3660fe5da05eSIlya Dryomov int result; 3661fe5da05eSIlya Dryomov u32 epoch; 3662fe5da05eSIlya Dryomov int num_ops; 3663fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 3664fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 3665fe5da05eSIlya Dryomov int retry_attempt; 3666fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 3667fe5da05eSIlya Dryomov u64 user_version; 3668fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 3669fe5da05eSIlya Dryomov }; 367025845472SSage Weil 3671fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 36723d14c5d2SYehuda Sadeh { 3673fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 3674fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 3675fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 3676fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 3677b0b31a8fSIlya Dryomov u8 decode_redir; 3678fe5da05eSIlya Dryomov u32 len; 3679fe5da05eSIlya Dryomov int ret; 3680fe5da05eSIlya Dryomov int i; 36813d14c5d2SYehuda Sadeh 3682fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 3683fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 3684fe5da05eSIlya Dryomov p += len; /* skip oid */ 36851b83bef2SSage Weil 3686fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 3687fe5da05eSIlya Dryomov if (ret) 3688fe5da05eSIlya Dryomov return ret; 36891b83bef2SSage Weil 3690fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 3691fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 3692fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 3693fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 3694fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 3695fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 36961b83bef2SSage Weil 3697fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 3698fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 3699fe5da05eSIlya Dryomov goto e_inval; 37001b83bef2SSage Weil 3701fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 3702fe5da05eSIlya Dryomov e_inval); 3703fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 37041b83bef2SSage Weil struct ceph_osd_op *op = p; 37051b83bef2SSage Weil 3706fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 37071b83bef2SSage Weil p += sizeof(*op); 37081b83bef2SSage Weil } 3709fe5da05eSIlya Dryomov 3710fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 3711fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 3712fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 3713fe5da05eSIlya Dryomov 3714fe5da05eSIlya Dryomov if (version >= 5) { 3715fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 3716fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 3717fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 3718fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 3719fe5da05eSIlya Dryomov } else { 3720fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 3721fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 37221b83bef2SSage Weil } 37231b83bef2SSage Weil 3724fe5da05eSIlya Dryomov if (version >= 6) { 3725fe5da05eSIlya Dryomov if (version >= 7) 3726fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 3727b0b31a8fSIlya Dryomov else 3728b0b31a8fSIlya Dryomov decode_redir = 1; 3729b0b31a8fSIlya Dryomov } else { 3730b0b31a8fSIlya Dryomov decode_redir = 0; 3731b0b31a8fSIlya Dryomov } 3732b0b31a8fSIlya Dryomov 3733b0b31a8fSIlya Dryomov if (decode_redir) { 3734fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 3735fe5da05eSIlya Dryomov if (ret) 3736fe5da05eSIlya Dryomov return ret; 3737205ee118SIlya Dryomov } else { 3738fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 3739205ee118SIlya Dryomov } 3740205ee118SIlya Dryomov 3741fe5da05eSIlya Dryomov return 0; 3742205ee118SIlya Dryomov 3743fe5da05eSIlya Dryomov e_inval: 3744fe5da05eSIlya Dryomov return -EINVAL; 3745fe5da05eSIlya Dryomov } 3746fe5da05eSIlya Dryomov 3747fe5da05eSIlya Dryomov /* 3748b18b9550SIlya Dryomov * Handle MOSDOpReply. Set ->r_result and call the callback if it is 3749b18b9550SIlya Dryomov * specified. 3750fe5da05eSIlya Dryomov */ 37515aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 3752fe5da05eSIlya Dryomov { 37535aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 3754fe5da05eSIlya Dryomov struct ceph_osd_request *req; 3755fe5da05eSIlya Dryomov struct MOSDOpReply m; 3756fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 3757fe5da05eSIlya Dryomov u32 data_len = 0; 3758fe5da05eSIlya Dryomov int ret; 3759fe5da05eSIlya Dryomov int i; 3760fe5da05eSIlya Dryomov 3761fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 3762fe5da05eSIlya Dryomov 37635aea3dcdSIlya Dryomov down_read(&osdc->lock); 37645aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 37655aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 37665aea3dcdSIlya Dryomov goto out_unlock_osdc; 3767fe5da05eSIlya Dryomov } 37685aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 37695aea3dcdSIlya Dryomov 37705aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 37715aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 37725aea3dcdSIlya Dryomov if (!req) { 37735aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 37745aea3dcdSIlya Dryomov goto out_unlock_session; 37755aea3dcdSIlya Dryomov } 3776fe5da05eSIlya Dryomov 3777cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns; 3778fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 3779cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = NULL; 3780fe5da05eSIlya Dryomov if (ret) { 3781fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 3782fe5da05eSIlya Dryomov req->r_tid, ret); 3783fe5da05eSIlya Dryomov ceph_msg_dump(msg); 3784fe5da05eSIlya Dryomov goto fail_request; 3785fe5da05eSIlya Dryomov } 3786fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 3787fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 3788fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 3789fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 3790fe5da05eSIlya Dryomov 3791fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 3792fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 3793fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 3794fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 3795fe5da05eSIlya Dryomov req->r_attempts - 1); 37965aea3dcdSIlya Dryomov goto out_unlock_session; 3797fe5da05eSIlya Dryomov } 3798fe5da05eSIlya Dryomov } else { 3799fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 3800fe5da05eSIlya Dryomov } 3801fe5da05eSIlya Dryomov 3802fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 3803fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 3804fe5da05eSIlya Dryomov m.redirect.oloc.pool); 38055aea3dcdSIlya Dryomov unlink_request(osd, req); 38065aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 3807205ee118SIlya Dryomov 380830c156d9SYan, Zheng /* 380930c156d9SYan, Zheng * Not ceph_oloc_copy() - changing pool_ns is not 381030c156d9SYan, Zheng * supported. 381130c156d9SYan, Zheng */ 381230c156d9SYan, Zheng req->r_t.target_oloc.pool = m.redirect.oloc.pool; 3813890bd0f8SJerry Lee req->r_flags |= CEPH_OSD_FLAG_REDIRECTED | 3814890bd0f8SJerry Lee CEPH_OSD_FLAG_IGNORE_OVERLAY | 3815890bd0f8SJerry Lee CEPH_OSD_FLAG_IGNORE_CACHE; 38165aea3dcdSIlya Dryomov req->r_tid = 0; 38175aea3dcdSIlya Dryomov __submit_request(req, false); 38185aea3dcdSIlya Dryomov goto out_unlock_osdc; 3819205ee118SIlya Dryomov } 3820205ee118SIlya Dryomov 3821117d96a0SIlya Dryomov if (m.result == -EAGAIN) { 3822117d96a0SIlya Dryomov dout("req %p tid %llu EAGAIN\n", req, req->r_tid); 3823117d96a0SIlya Dryomov unlink_request(osd, req); 3824117d96a0SIlya Dryomov mutex_unlock(&osd->lock); 3825117d96a0SIlya Dryomov 3826117d96a0SIlya Dryomov /* 3827117d96a0SIlya Dryomov * The object is missing on the replica or not (yet) 3828117d96a0SIlya Dryomov * readable. Clear pgid to force a resend to the primary 3829117d96a0SIlya Dryomov * via legacy_change. 3830117d96a0SIlya Dryomov */ 3831117d96a0SIlya Dryomov req->r_t.pgid.pool = 0; 3832117d96a0SIlya Dryomov req->r_t.pgid.seed = 0; 3833117d96a0SIlya Dryomov WARN_ON(!req->r_t.used_replica); 3834117d96a0SIlya Dryomov req->r_flags &= ~(CEPH_OSD_FLAG_BALANCE_READS | 3835117d96a0SIlya Dryomov CEPH_OSD_FLAG_LOCALIZE_READS); 3836117d96a0SIlya Dryomov req->r_tid = 0; 3837117d96a0SIlya Dryomov __submit_request(req, false); 3838117d96a0SIlya Dryomov goto out_unlock_osdc; 3839117d96a0SIlya Dryomov } 3840117d96a0SIlya Dryomov 3841fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 3842fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 3843fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 3844fe5da05eSIlya Dryomov goto fail_request; 3845fe5da05eSIlya Dryomov } 3846fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 3847fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 3848fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 3849fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 3850fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 3851fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 3852fe5da05eSIlya Dryomov } 3853fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 3854fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 3855fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 3856fe5da05eSIlya Dryomov goto fail_request; 3857fe5da05eSIlya Dryomov } 3858b18b9550SIlya Dryomov dout("%s req %p tid %llu result %d data_len %u\n", __func__, 3859b18b9550SIlya Dryomov req, req->r_tid, m.result, data_len); 38603d14c5d2SYehuda Sadeh 3861b18b9550SIlya Dryomov /* 3862b18b9550SIlya Dryomov * Since we only ever request ONDISK, we should only ever get 3863b18b9550SIlya Dryomov * one (type of) reply back. 3864b18b9550SIlya Dryomov */ 3865b18b9550SIlya Dryomov WARN_ON(!(m.flags & CEPH_OSD_FLAG_ONDISK)); 3866*69dd3b39SJeff Layton req->r_version = m.user_version; 3867fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 386845ee2c1dSIlya Dryomov finish_request(req); 38695aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 38705aea3dcdSIlya Dryomov up_read(&osdc->lock); 38713d14c5d2SYehuda Sadeh 3872fe5da05eSIlya Dryomov __complete_request(req); 38733d14c5d2SYehuda Sadeh return; 3874fe5da05eSIlya Dryomov 3875fe5da05eSIlya Dryomov fail_request: 38764609245eSIlya Dryomov complete_request(req, -EIO); 38775aea3dcdSIlya Dryomov out_unlock_session: 38785aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 38795aea3dcdSIlya Dryomov out_unlock_osdc: 38805aea3dcdSIlya Dryomov up_read(&osdc->lock); 38813d14c5d2SYehuda Sadeh } 38823d14c5d2SYehuda Sadeh 388342c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 388442c1b124SIlya Dryomov { 388542c1b124SIlya Dryomov struct rb_node *n; 388642c1b124SIlya Dryomov 388742c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 388842c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 388942c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 389042c1b124SIlya Dryomov 389142c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 389242c1b124SIlya Dryomov } 389342c1b124SIlya Dryomov } 389442c1b124SIlya Dryomov 38955aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 38963d14c5d2SYehuda Sadeh { 38975aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 38983d14c5d2SYehuda Sadeh 38995aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 39005aea3dcdSIlya Dryomov if (!pi) 39015aea3dcdSIlya Dryomov return false; 39023d14c5d2SYehuda Sadeh 39035aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 39043d14c5d2SYehuda Sadeh } 39053d14c5d2SYehuda Sadeh 3906922dab61SIlya Dryomov static enum calc_target_result 3907922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 3908922dab61SIlya Dryomov { 3909922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3910922dab61SIlya Dryomov enum calc_target_result ct_res; 3911922dab61SIlya Dryomov 39128edf84baSIlya Dryomov ct_res = calc_target(osdc, &lreq->t, true); 3913922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 3914922dab61SIlya Dryomov struct ceph_osd *osd; 3915922dab61SIlya Dryomov 3916922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3917922dab61SIlya Dryomov if (osd != lreq->osd) { 3918922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3919922dab61SIlya Dryomov link_linger(osd, lreq); 3920922dab61SIlya Dryomov } 3921922dab61SIlya Dryomov } 3922922dab61SIlya Dryomov 3923922dab61SIlya Dryomov return ct_res; 3924922dab61SIlya Dryomov } 3925922dab61SIlya Dryomov 39263d14c5d2SYehuda Sadeh /* 39275aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 39283d14c5d2SYehuda Sadeh */ 39295aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 39305aea3dcdSIlya Dryomov bool force_resend, 39315aea3dcdSIlya Dryomov bool cleared_full, 39325aea3dcdSIlya Dryomov bool check_pool_cleared_full, 39335aea3dcdSIlya Dryomov struct rb_root *need_resend, 39345aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 39353d14c5d2SYehuda Sadeh { 39365aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 39375aea3dcdSIlya Dryomov struct rb_node *n; 39385aea3dcdSIlya Dryomov bool force_resend_writes; 39393d14c5d2SYehuda Sadeh 3940922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 3941922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3942922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3943922dab61SIlya Dryomov enum calc_target_result ct_res; 3944922dab61SIlya Dryomov 3945922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 3946922dab61SIlya Dryomov 3947922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 3948922dab61SIlya Dryomov lreq->linger_id); 3949922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 3950922dab61SIlya Dryomov switch (ct_res) { 3951922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 3952922dab61SIlya Dryomov force_resend_writes = cleared_full || 3953922dab61SIlya Dryomov (check_pool_cleared_full && 3954922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 3955922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 3956922dab61SIlya Dryomov break; 3957922dab61SIlya Dryomov 3958df561f66SGustavo A. R. Silva fallthrough; 3959922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 39604609245eSIlya Dryomov cancel_linger_map_check(lreq); 3961922dab61SIlya Dryomov /* 3962922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 3963922dab61SIlya Dryomov * may have already added it to the list, since 3964922dab61SIlya Dryomov * it's not unlinked here. 3965922dab61SIlya Dryomov */ 3966922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 3967922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 3968922dab61SIlya Dryomov break; 3969922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 3970a10bcb19SIlya Dryomov list_del_init(&lreq->scan_item); 39714609245eSIlya Dryomov check_linger_pool_dne(lreq); 3972922dab61SIlya Dryomov break; 3973922dab61SIlya Dryomov } 3974922dab61SIlya Dryomov } 3975922dab61SIlya Dryomov 39765aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 39775aea3dcdSIlya Dryomov struct ceph_osd_request *req = 39785aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 39795aea3dcdSIlya Dryomov enum calc_target_result ct_res; 3980ab60b16dSAlex Elder 39814609245eSIlya Dryomov n = rb_next(n); /* unlink_request(), check_pool_dne() */ 3982ab60b16dSAlex Elder 39835aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 39848edf84baSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, false); 39855aea3dcdSIlya Dryomov switch (ct_res) { 39865aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 39875aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 39885aea3dcdSIlya Dryomov (check_pool_cleared_full && 39895aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 39905aea3dcdSIlya Dryomov if (!force_resend && 39915aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 39925aea3dcdSIlya Dryomov !force_resend_writes)) 39935aea3dcdSIlya Dryomov break; 3994a40c4f10SYehuda Sadeh 3995df561f66SGustavo A. R. Silva fallthrough; 39965aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 39974609245eSIlya Dryomov cancel_map_check(req); 39985aea3dcdSIlya Dryomov unlink_request(osd, req); 39995aea3dcdSIlya Dryomov insert_request(need_resend, req); 40005aea3dcdSIlya Dryomov break; 40015aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 40024609245eSIlya Dryomov check_pool_dne(req); 40035aea3dcdSIlya Dryomov break; 4004a40c4f10SYehuda Sadeh } 40053d14c5d2SYehuda Sadeh } 40063d14c5d2SYehuda Sadeh } 40076f6c7006SSage Weil 400842c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 40095aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 40105aea3dcdSIlya Dryomov struct rb_root *need_resend, 40115aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 401242c1b124SIlya Dryomov { 401342c1b124SIlya Dryomov struct ceph_osdmap *newmap; 401442c1b124SIlya Dryomov struct rb_node *n; 401542c1b124SIlya Dryomov bool skipped_map = false; 401642c1b124SIlya Dryomov bool was_full; 401742c1b124SIlya Dryomov 4018b7ec35b3SIlya Dryomov was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 401942c1b124SIlya Dryomov set_pool_was_full(osdc); 402042c1b124SIlya Dryomov 402142c1b124SIlya Dryomov if (incremental) 4022cd1a677cSIlya Dryomov newmap = osdmap_apply_incremental(&p, end, 4023cd1a677cSIlya Dryomov ceph_msgr2(osdc->client), 4024cd1a677cSIlya Dryomov osdc->osdmap); 402542c1b124SIlya Dryomov else 4026cd1a677cSIlya Dryomov newmap = ceph_osdmap_decode(&p, end, ceph_msgr2(osdc->client)); 402742c1b124SIlya Dryomov if (IS_ERR(newmap)) 402842c1b124SIlya Dryomov return PTR_ERR(newmap); 402942c1b124SIlya Dryomov 403042c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 403142c1b124SIlya Dryomov /* 403242c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 403342c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 403442c1b124SIlya Dryomov * should be false. 403542c1b124SIlya Dryomov */ 403642c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 403742c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 403842c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 403942c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 404042c1b124SIlya Dryomov 404142c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 404242c1b124SIlya Dryomov if (old_pi) 404342c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 404442c1b124SIlya Dryomov else 404542c1b124SIlya Dryomov WARN_ON(pi->was_full); 404642c1b124SIlya Dryomov } 404742c1b124SIlya Dryomov 404842c1b124SIlya Dryomov if (osdc->osdmap->epoch && 404942c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 405042c1b124SIlya Dryomov WARN_ON(incremental); 405142c1b124SIlya Dryomov skipped_map = true; 405242c1b124SIlya Dryomov } 405342c1b124SIlya Dryomov 405442c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 405542c1b124SIlya Dryomov osdc->osdmap = newmap; 405642c1b124SIlya Dryomov } 405742c1b124SIlya Dryomov 4058b7ec35b3SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 40595aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 40605aea3dcdSIlya Dryomov need_resend, need_resend_linger); 40615aea3dcdSIlya Dryomov 40625aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 40635aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 40645aea3dcdSIlya Dryomov 40655aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 40665aea3dcdSIlya Dryomov 40675aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 40685aea3dcdSIlya Dryomov need_resend_linger); 40695aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 40705aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 40715aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 40725aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 40735aea3dcdSIlya Dryomov close_osd(osd); 40745aea3dcdSIlya Dryomov } 407542c1b124SIlya Dryomov 407642c1b124SIlya Dryomov return 0; 407742c1b124SIlya Dryomov } 40786f6c7006SSage Weil 40795aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 40805aea3dcdSIlya Dryomov struct rb_root *need_resend, 40815aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 40825aea3dcdSIlya Dryomov { 4083922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 408404c7d789SIlya Dryomov enum calc_target_result ct_res; 40855aea3dcdSIlya Dryomov struct rb_node *n; 40865aea3dcdSIlya Dryomov 408704c7d789SIlya Dryomov /* make sure need_resend targets reflect latest map */ 408804c7d789SIlya Dryomov for (n = rb_first(need_resend); n; ) { 408904c7d789SIlya Dryomov struct ceph_osd_request *req = 409004c7d789SIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 409104c7d789SIlya Dryomov 409204c7d789SIlya Dryomov n = rb_next(n); 409304c7d789SIlya Dryomov 409404c7d789SIlya Dryomov if (req->r_t.epoch < osdc->osdmap->epoch) { 40958edf84baSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, false); 409604c7d789SIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) { 409704c7d789SIlya Dryomov erase_request(need_resend, req); 409804c7d789SIlya Dryomov check_pool_dne(req); 409904c7d789SIlya Dryomov } 410004c7d789SIlya Dryomov } 410104c7d789SIlya Dryomov } 410204c7d789SIlya Dryomov 41035aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 41045aea3dcdSIlya Dryomov struct ceph_osd_request *req = 41055aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 41065aea3dcdSIlya Dryomov struct ceph_osd *osd; 41075aea3dcdSIlya Dryomov 41085aea3dcdSIlya Dryomov n = rb_next(n); 41095aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 41105aea3dcdSIlya Dryomov 41115aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 41125aea3dcdSIlya Dryomov link_request(osd, req); 41135aea3dcdSIlya Dryomov if (!req->r_linger) { 41145aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 41155aea3dcdSIlya Dryomov send_request(req); 4116922dab61SIlya Dryomov } else { 4117922dab61SIlya Dryomov cancel_linger_request(req); 41185aea3dcdSIlya Dryomov } 41195aea3dcdSIlya Dryomov } 4120922dab61SIlya Dryomov 4121922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 4122922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 4123922dab61SIlya Dryomov send_linger(lreq); 4124922dab61SIlya Dryomov 4125922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 4126922dab61SIlya Dryomov } 41275aea3dcdSIlya Dryomov } 41285aea3dcdSIlya Dryomov 41293d14c5d2SYehuda Sadeh /* 41303d14c5d2SYehuda Sadeh * Process updated osd map. 41313d14c5d2SYehuda Sadeh * 41323d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 41333d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 41343d14c5d2SYehuda Sadeh * off to different OSDs as needed. 41353d14c5d2SYehuda Sadeh */ 41363d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 41373d14c5d2SYehuda Sadeh { 413842c1b124SIlya Dryomov void *p = msg->front.iov_base; 413942c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 41403d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 41413d14c5d2SYehuda Sadeh u32 epoch; 41423d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 41435aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 41445aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 414542c1b124SIlya Dryomov bool handled_incremental = false; 414642c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 414742c1b124SIlya Dryomov bool pauserd, pausewr; 414842c1b124SIlya Dryomov int err; 41493d14c5d2SYehuda Sadeh 415042c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 41515aea3dcdSIlya Dryomov down_write(&osdc->lock); 41523d14c5d2SYehuda Sadeh 41533d14c5d2SYehuda Sadeh /* verify fsid */ 41543d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 41553d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 41563d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 415742c1b124SIlya Dryomov goto bad; 41583d14c5d2SYehuda Sadeh 4159b7ec35b3SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 4160b7ec35b3SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 4161b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 416242c1b124SIlya Dryomov have_pool_full(osdc); 41639a1ea2dbSJosh Durgin 41643d14c5d2SYehuda Sadeh /* incremental maps */ 41653d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 41663d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 41673d14c5d2SYehuda Sadeh while (nr_maps > 0) { 41683d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 41693d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 41703d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 41713d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 417242c1b124SIlya Dryomov if (osdc->osdmap->epoch && 417342c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 41743d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 41753d14c5d2SYehuda Sadeh epoch, maplen); 41765aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 41775aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 417842c1b124SIlya Dryomov if (err) 41793d14c5d2SYehuda Sadeh goto bad; 418042c1b124SIlya Dryomov handled_incremental = true; 41813d14c5d2SYehuda Sadeh } else { 41823d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 41833d14c5d2SYehuda Sadeh epoch, maplen); 41843d14c5d2SYehuda Sadeh } 418542c1b124SIlya Dryomov p += maplen; 41863d14c5d2SYehuda Sadeh nr_maps--; 41873d14c5d2SYehuda Sadeh } 418842c1b124SIlya Dryomov if (handled_incremental) 41893d14c5d2SYehuda Sadeh goto done; 41903d14c5d2SYehuda Sadeh 41913d14c5d2SYehuda Sadeh /* full maps */ 41923d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 41933d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 41943d14c5d2SYehuda Sadeh while (nr_maps) { 41953d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 41963d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 41973d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 41983d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 41993d14c5d2SYehuda Sadeh if (nr_maps > 1) { 42003d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 42013d14c5d2SYehuda Sadeh epoch, maplen); 4202e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 42033d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 42043d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 42053d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 42063d14c5d2SYehuda Sadeh } else { 42073d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 42085aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 42095aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 421042c1b124SIlya Dryomov if (err) 42113d14c5d2SYehuda Sadeh goto bad; 42123d14c5d2SYehuda Sadeh } 42133d14c5d2SYehuda Sadeh p += maplen; 42143d14c5d2SYehuda Sadeh nr_maps--; 42153d14c5d2SYehuda Sadeh } 42163d14c5d2SYehuda Sadeh 42173d14c5d2SYehuda Sadeh done: 4218cd634fb6SSage Weil /* 4219cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 4220cd634fb6SSage Weil * we find out when we are no longer full and stop returning 4221cd634fb6SSage Weil * ENOSPC. 4222cd634fb6SSage Weil */ 4223b7ec35b3SIlya Dryomov pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 4224b7ec35b3SIlya Dryomov pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 4225b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 422642c1b124SIlya Dryomov have_pool_full(osdc); 422758eb7932SJeff Layton if (was_pauserd || was_pausewr || pauserd || pausewr || 422858eb7932SJeff Layton osdc->osdmap->epoch < osdc->epoch_barrier) 422942c1b124SIlya Dryomov maybe_request_map(osdc); 4230cd634fb6SSage Weil 42315aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 423242c1b124SIlya Dryomov 4233fc36d0a4SJeff Layton ceph_osdc_abort_on_full(osdc); 423442c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 423542c1b124SIlya Dryomov osdc->osdmap->epoch); 42365aea3dcdSIlya Dryomov up_write(&osdc->lock); 42373d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 42383d14c5d2SYehuda Sadeh return; 42393d14c5d2SYehuda Sadeh 42403d14c5d2SYehuda Sadeh bad: 42413d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 42423d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 42435aea3dcdSIlya Dryomov up_write(&osdc->lock); 42445aea3dcdSIlya Dryomov } 42455aea3dcdSIlya Dryomov 42465aea3dcdSIlya Dryomov /* 42475aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 42485aea3dcdSIlya Dryomov */ 42495aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 42505aea3dcdSIlya Dryomov { 42515aea3dcdSIlya Dryomov struct rb_node *n; 42525aea3dcdSIlya Dryomov 4253a02a946dSIlya Dryomov clear_backoffs(osd); 4254a02a946dSIlya Dryomov 4255922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 42565aea3dcdSIlya Dryomov struct ceph_osd_request *req = 42575aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 42585aea3dcdSIlya Dryomov 4259922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 4260922dab61SIlya Dryomov 42615aea3dcdSIlya Dryomov if (!req->r_linger) { 42625aea3dcdSIlya Dryomov if (!req->r_t.paused) 42635aea3dcdSIlya Dryomov send_request(req); 4264922dab61SIlya Dryomov } else { 4265922dab61SIlya Dryomov cancel_linger_request(req); 42665aea3dcdSIlya Dryomov } 42675aea3dcdSIlya Dryomov } 4268922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 4269922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 4270922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 4271922dab61SIlya Dryomov 4272922dab61SIlya Dryomov send_linger(lreq); 4273922dab61SIlya Dryomov } 42745aea3dcdSIlya Dryomov } 42755aea3dcdSIlya Dryomov 42765aea3dcdSIlya Dryomov /* 42775aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 42785aea3dcdSIlya Dryomov */ 42795aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 42805aea3dcdSIlya Dryomov { 42815aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 42825aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 42835aea3dcdSIlya Dryomov 42845aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 42855aea3dcdSIlya Dryomov 42865aea3dcdSIlya Dryomov down_write(&osdc->lock); 42875aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 42885aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 42895aea3dcdSIlya Dryomov goto out_unlock; 42905aea3dcdSIlya Dryomov } 42915aea3dcdSIlya Dryomov 42925aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 42935aea3dcdSIlya Dryomov kick_osd_requests(osd); 42945aea3dcdSIlya Dryomov maybe_request_map(osdc); 42955aea3dcdSIlya Dryomov 42965aea3dcdSIlya Dryomov out_unlock: 42975aea3dcdSIlya Dryomov up_write(&osdc->lock); 42983d14c5d2SYehuda Sadeh } 42993d14c5d2SYehuda Sadeh 4300a02a946dSIlya Dryomov struct MOSDBackoff { 4301a02a946dSIlya Dryomov struct ceph_spg spgid; 4302a02a946dSIlya Dryomov u32 map_epoch; 4303a02a946dSIlya Dryomov u8 op; 4304a02a946dSIlya Dryomov u64 id; 4305a02a946dSIlya Dryomov struct ceph_hobject_id *begin; 4306a02a946dSIlya Dryomov struct ceph_hobject_id *end; 4307a02a946dSIlya Dryomov }; 4308a02a946dSIlya Dryomov 4309a02a946dSIlya Dryomov static int decode_MOSDBackoff(const struct ceph_msg *msg, struct MOSDBackoff *m) 4310a02a946dSIlya Dryomov { 4311a02a946dSIlya Dryomov void *p = msg->front.iov_base; 4312a02a946dSIlya Dryomov void *const end = p + msg->front.iov_len; 4313a02a946dSIlya Dryomov u8 struct_v; 4314a02a946dSIlya Dryomov u32 struct_len; 4315a02a946dSIlya Dryomov int ret; 4316a02a946dSIlya Dryomov 4317a02a946dSIlya Dryomov ret = ceph_start_decoding(&p, end, 1, "spg_t", &struct_v, &struct_len); 4318a02a946dSIlya Dryomov if (ret) 4319a02a946dSIlya Dryomov return ret; 4320a02a946dSIlya Dryomov 4321a02a946dSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->spgid.pgid); 4322a02a946dSIlya Dryomov if (ret) 4323a02a946dSIlya Dryomov return ret; 4324a02a946dSIlya Dryomov 4325a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->spgid.shard, e_inval); 4326a02a946dSIlya Dryomov ceph_decode_32_safe(&p, end, m->map_epoch, e_inval); 4327a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->op, e_inval); 4328a02a946dSIlya Dryomov ceph_decode_64_safe(&p, end, m->id, e_inval); 4329a02a946dSIlya Dryomov 4330a02a946dSIlya Dryomov m->begin = kzalloc(sizeof(*m->begin), GFP_NOIO); 4331a02a946dSIlya Dryomov if (!m->begin) 4332a02a946dSIlya Dryomov return -ENOMEM; 4333a02a946dSIlya Dryomov 4334a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->begin); 4335a02a946dSIlya Dryomov if (ret) { 4336a02a946dSIlya Dryomov free_hoid(m->begin); 4337a02a946dSIlya Dryomov return ret; 4338a02a946dSIlya Dryomov } 4339a02a946dSIlya Dryomov 4340a02a946dSIlya Dryomov m->end = kzalloc(sizeof(*m->end), GFP_NOIO); 4341a02a946dSIlya Dryomov if (!m->end) { 4342a02a946dSIlya Dryomov free_hoid(m->begin); 4343a02a946dSIlya Dryomov return -ENOMEM; 4344a02a946dSIlya Dryomov } 4345a02a946dSIlya Dryomov 4346a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->end); 4347a02a946dSIlya Dryomov if (ret) { 4348a02a946dSIlya Dryomov free_hoid(m->begin); 4349a02a946dSIlya Dryomov free_hoid(m->end); 4350a02a946dSIlya Dryomov return ret; 4351a02a946dSIlya Dryomov } 4352a02a946dSIlya Dryomov 4353a02a946dSIlya Dryomov return 0; 4354a02a946dSIlya Dryomov 4355a02a946dSIlya Dryomov e_inval: 4356a02a946dSIlya Dryomov return -EINVAL; 4357a02a946dSIlya Dryomov } 4358a02a946dSIlya Dryomov 4359a02a946dSIlya Dryomov static struct ceph_msg *create_backoff_message( 4360a02a946dSIlya Dryomov const struct ceph_osd_backoff *backoff, 4361a02a946dSIlya Dryomov u32 map_epoch) 4362a02a946dSIlya Dryomov { 4363a02a946dSIlya Dryomov struct ceph_msg *msg; 4364a02a946dSIlya Dryomov void *p, *end; 4365a02a946dSIlya Dryomov int msg_size; 4366a02a946dSIlya Dryomov 4367a02a946dSIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 4368a02a946dSIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 4369a02a946dSIlya Dryomov msg_size += 4 + 1 + 8; /* map_epoch, op, id */ 4370a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4371a02a946dSIlya Dryomov hoid_encoding_size(backoff->begin); 4372a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4373a02a946dSIlya Dryomov hoid_encoding_size(backoff->end); 4374a02a946dSIlya Dryomov 4375a02a946dSIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_BACKOFF, msg_size, GFP_NOIO, true); 4376a02a946dSIlya Dryomov if (!msg) 4377a02a946dSIlya Dryomov return NULL; 4378a02a946dSIlya Dryomov 4379a02a946dSIlya Dryomov p = msg->front.iov_base; 4380a02a946dSIlya Dryomov end = p + msg->front_alloc_len; 4381a02a946dSIlya Dryomov 4382a02a946dSIlya Dryomov encode_spgid(&p, &backoff->spgid); 4383a02a946dSIlya Dryomov ceph_encode_32(&p, map_epoch); 4384a02a946dSIlya Dryomov ceph_encode_8(&p, CEPH_OSD_BACKOFF_OP_ACK_BLOCK); 4385a02a946dSIlya Dryomov ceph_encode_64(&p, backoff->id); 4386a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->begin); 4387a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->end); 4388a02a946dSIlya Dryomov BUG_ON(p != end); 4389a02a946dSIlya Dryomov 4390a02a946dSIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 4391a02a946dSIlya Dryomov msg->hdr.version = cpu_to_le16(1); /* MOSDBackoff v1 */ 4392a02a946dSIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 4393a02a946dSIlya Dryomov 4394a02a946dSIlya Dryomov return msg; 4395a02a946dSIlya Dryomov } 4396a02a946dSIlya Dryomov 4397a02a946dSIlya Dryomov static void handle_backoff_block(struct ceph_osd *osd, struct MOSDBackoff *m) 4398a02a946dSIlya Dryomov { 4399a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4400a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4401a02a946dSIlya Dryomov struct ceph_msg *msg; 4402a02a946dSIlya Dryomov 4403a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4404a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4405a02a946dSIlya Dryomov 4406a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &m->spgid); 4407a02a946dSIlya Dryomov if (!spg) { 4408a02a946dSIlya Dryomov spg = alloc_spg_mapping(); 4409a02a946dSIlya Dryomov if (!spg) { 4410a02a946dSIlya Dryomov pr_err("%s failed to allocate spg\n", __func__); 4411a02a946dSIlya Dryomov return; 4412a02a946dSIlya Dryomov } 4413a02a946dSIlya Dryomov spg->spgid = m->spgid; /* struct */ 4414a02a946dSIlya Dryomov insert_spg_mapping(&osd->o_backoff_mappings, spg); 4415a02a946dSIlya Dryomov } 4416a02a946dSIlya Dryomov 4417a02a946dSIlya Dryomov backoff = alloc_backoff(); 4418a02a946dSIlya Dryomov if (!backoff) { 4419a02a946dSIlya Dryomov pr_err("%s failed to allocate backoff\n", __func__); 4420a02a946dSIlya Dryomov return; 4421a02a946dSIlya Dryomov } 4422a02a946dSIlya Dryomov backoff->spgid = m->spgid; /* struct */ 4423a02a946dSIlya Dryomov backoff->id = m->id; 4424a02a946dSIlya Dryomov backoff->begin = m->begin; 4425a02a946dSIlya Dryomov m->begin = NULL; /* backoff now owns this */ 4426a02a946dSIlya Dryomov backoff->end = m->end; 4427a02a946dSIlya Dryomov m->end = NULL; /* ditto */ 4428a02a946dSIlya Dryomov 4429a02a946dSIlya Dryomov insert_backoff(&spg->backoffs, backoff); 4430a02a946dSIlya Dryomov insert_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4431a02a946dSIlya Dryomov 4432a02a946dSIlya Dryomov /* 4433a02a946dSIlya Dryomov * Ack with original backoff's epoch so that the OSD can 4434a02a946dSIlya Dryomov * discard this if there was a PG split. 4435a02a946dSIlya Dryomov */ 4436a02a946dSIlya Dryomov msg = create_backoff_message(backoff, m->map_epoch); 4437a02a946dSIlya Dryomov if (!msg) { 4438a02a946dSIlya Dryomov pr_err("%s failed to allocate msg\n", __func__); 4439a02a946dSIlya Dryomov return; 4440a02a946dSIlya Dryomov } 4441a02a946dSIlya Dryomov ceph_con_send(&osd->o_con, msg); 4442a02a946dSIlya Dryomov } 4443a02a946dSIlya Dryomov 4444a02a946dSIlya Dryomov static bool target_contained_by(const struct ceph_osd_request_target *t, 4445a02a946dSIlya Dryomov const struct ceph_hobject_id *begin, 4446a02a946dSIlya Dryomov const struct ceph_hobject_id *end) 4447a02a946dSIlya Dryomov { 4448a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 4449a02a946dSIlya Dryomov int cmp; 4450a02a946dSIlya Dryomov 4451a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, t); 4452a02a946dSIlya Dryomov cmp = hoid_compare(&hoid, begin); 4453a02a946dSIlya Dryomov return !cmp || (cmp > 0 && hoid_compare(&hoid, end) < 0); 4454a02a946dSIlya Dryomov } 4455a02a946dSIlya Dryomov 4456a02a946dSIlya Dryomov static void handle_backoff_unblock(struct ceph_osd *osd, 4457a02a946dSIlya Dryomov const struct MOSDBackoff *m) 4458a02a946dSIlya Dryomov { 4459a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4460a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4461a02a946dSIlya Dryomov struct rb_node *n; 4462a02a946dSIlya Dryomov 4463a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4464a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4465a02a946dSIlya Dryomov 4466a02a946dSIlya Dryomov backoff = lookup_backoff_by_id(&osd->o_backoffs_by_id, m->id); 4467a02a946dSIlya Dryomov if (!backoff) { 4468a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu backoff dne\n", 4469a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4470a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4471a02a946dSIlya Dryomov return; 4472a02a946dSIlya Dryomov } 4473a02a946dSIlya Dryomov 4474a02a946dSIlya Dryomov if (hoid_compare(backoff->begin, m->begin) && 4475a02a946dSIlya Dryomov hoid_compare(backoff->end, m->end)) { 4476a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu bad range?\n", 4477a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4478a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4479a02a946dSIlya Dryomov /* unblock it anyway... */ 4480a02a946dSIlya Dryomov } 4481a02a946dSIlya Dryomov 4482a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &backoff->spgid); 4483a02a946dSIlya Dryomov BUG_ON(!spg); 4484a02a946dSIlya Dryomov 4485a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 4486a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4487a02a946dSIlya Dryomov free_backoff(backoff); 4488a02a946dSIlya Dryomov 4489a02a946dSIlya Dryomov if (RB_EMPTY_ROOT(&spg->backoffs)) { 4490a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 4491a02a946dSIlya Dryomov free_spg_mapping(spg); 4492a02a946dSIlya Dryomov } 4493a02a946dSIlya Dryomov 4494a02a946dSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 4495a02a946dSIlya Dryomov struct ceph_osd_request *req = 4496a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 4497a02a946dSIlya Dryomov 4498a02a946dSIlya Dryomov if (!ceph_spg_compare(&req->r_t.spgid, &m->spgid)) { 4499a02a946dSIlya Dryomov /* 4500a02a946dSIlya Dryomov * Match against @m, not @backoff -- the PG may 4501a02a946dSIlya Dryomov * have split on the OSD. 4502a02a946dSIlya Dryomov */ 4503a02a946dSIlya Dryomov if (target_contained_by(&req->r_t, m->begin, m->end)) { 4504a02a946dSIlya Dryomov /* 4505a02a946dSIlya Dryomov * If no other installed backoff applies, 4506a02a946dSIlya Dryomov * resend. 4507a02a946dSIlya Dryomov */ 4508a02a946dSIlya Dryomov send_request(req); 4509a02a946dSIlya Dryomov } 4510a02a946dSIlya Dryomov } 4511a02a946dSIlya Dryomov } 4512a02a946dSIlya Dryomov } 4513a02a946dSIlya Dryomov 4514a02a946dSIlya Dryomov static void handle_backoff(struct ceph_osd *osd, struct ceph_msg *msg) 4515a02a946dSIlya Dryomov { 4516a02a946dSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 4517a02a946dSIlya Dryomov struct MOSDBackoff m; 4518a02a946dSIlya Dryomov int ret; 4519a02a946dSIlya Dryomov 4520a02a946dSIlya Dryomov down_read(&osdc->lock); 4521a02a946dSIlya Dryomov if (!osd_registered(osd)) { 4522a02a946dSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 4523a02a946dSIlya Dryomov up_read(&osdc->lock); 4524a02a946dSIlya Dryomov return; 4525a02a946dSIlya Dryomov } 4526a02a946dSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 4527a02a946dSIlya Dryomov 4528a02a946dSIlya Dryomov mutex_lock(&osd->lock); 4529a02a946dSIlya Dryomov ret = decode_MOSDBackoff(msg, &m); 4530a02a946dSIlya Dryomov if (ret) { 4531a02a946dSIlya Dryomov pr_err("failed to decode MOSDBackoff: %d\n", ret); 4532a02a946dSIlya Dryomov ceph_msg_dump(msg); 4533a02a946dSIlya Dryomov goto out_unlock; 4534a02a946dSIlya Dryomov } 4535a02a946dSIlya Dryomov 4536a02a946dSIlya Dryomov switch (m.op) { 4537a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_BLOCK: 4538a02a946dSIlya Dryomov handle_backoff_block(osd, &m); 4539a02a946dSIlya Dryomov break; 4540a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_UNBLOCK: 4541a02a946dSIlya Dryomov handle_backoff_unblock(osd, &m); 4542a02a946dSIlya Dryomov break; 4543a02a946dSIlya Dryomov default: 4544a02a946dSIlya Dryomov pr_err("%s osd%d unknown op %d\n", __func__, osd->o_osd, m.op); 4545a02a946dSIlya Dryomov } 4546a02a946dSIlya Dryomov 4547a02a946dSIlya Dryomov free_hoid(m.begin); 4548a02a946dSIlya Dryomov free_hoid(m.end); 4549a02a946dSIlya Dryomov 4550a02a946dSIlya Dryomov out_unlock: 4551a02a946dSIlya Dryomov mutex_unlock(&osd->lock); 4552a02a946dSIlya Dryomov up_read(&osdc->lock); 4553a02a946dSIlya Dryomov } 4554a02a946dSIlya Dryomov 45553d14c5d2SYehuda Sadeh /* 4556a40c4f10SYehuda Sadeh * Process osd watch notifications 4557a40c4f10SYehuda Sadeh */ 45583c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 45593c663bbdSAlex Elder struct ceph_msg *msg) 4560a40c4f10SYehuda Sadeh { 4561922dab61SIlya Dryomov void *p = msg->front.iov_base; 4562922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 4563922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4564922dab61SIlya Dryomov struct linger_work *lwork; 4565922dab61SIlya Dryomov u8 proto_ver, opcode; 4566922dab61SIlya Dryomov u64 cookie, notify_id; 4567922dab61SIlya Dryomov u64 notifier_id = 0; 456819079203SIlya Dryomov s32 return_code = 0; 4569922dab61SIlya Dryomov void *payload = NULL; 4570922dab61SIlya Dryomov u32 payload_len = 0; 4571a40c4f10SYehuda Sadeh 4572a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 4573a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 4574a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 4575922dab61SIlya Dryomov p += 8; /* skip ver */ 4576a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 4577a40c4f10SYehuda Sadeh 4578922dab61SIlya Dryomov if (proto_ver >= 1) { 4579922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 4580922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 4581922dab61SIlya Dryomov payload = p; 4582922dab61SIlya Dryomov p += payload_len; 4583a40c4f10SYehuda Sadeh } 4584a40c4f10SYehuda Sadeh 4585922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 458619079203SIlya Dryomov ceph_decode_32_safe(&p, end, return_code, bad); 4587922dab61SIlya Dryomov 4588922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 4589922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 4590922dab61SIlya Dryomov 4591922dab61SIlya Dryomov down_read(&osdc->lock); 4592922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 4593922dab61SIlya Dryomov if (!lreq) { 4594922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 4595922dab61SIlya Dryomov cookie); 4596922dab61SIlya Dryomov goto out_unlock_osdc; 4597922dab61SIlya Dryomov } 4598922dab61SIlya Dryomov 4599922dab61SIlya Dryomov mutex_lock(&lreq->lock); 460019079203SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, 460119079203SIlya Dryomov opcode, cookie, lreq, lreq->is_watch); 4602922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 4603922dab61SIlya Dryomov if (!lreq->last_error) { 4604922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 4605922dab61SIlya Dryomov queue_watch_error(lreq); 4606922dab61SIlya Dryomov } 460719079203SIlya Dryomov } else if (!lreq->is_watch) { 460819079203SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ 460919079203SIlya Dryomov if (lreq->notify_id && lreq->notify_id != notify_id) { 461019079203SIlya Dryomov dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, 461119079203SIlya Dryomov lreq->notify_id, notify_id); 461219079203SIlya Dryomov } else if (!completion_done(&lreq->notify_finish_wait)) { 461319079203SIlya Dryomov struct ceph_msg_data *data = 46140d9c1ab3SIlya Dryomov msg->num_data_items ? &msg->data[0] : NULL; 461519079203SIlya Dryomov 461619079203SIlya Dryomov if (data) { 461719079203SIlya Dryomov if (lreq->preply_pages) { 461819079203SIlya Dryomov WARN_ON(data->type != 461919079203SIlya Dryomov CEPH_MSG_DATA_PAGES); 462019079203SIlya Dryomov *lreq->preply_pages = data->pages; 462119079203SIlya Dryomov *lreq->preply_len = data->length; 4622e8862740SIlya Dryomov data->own_pages = false; 462319079203SIlya Dryomov } 462419079203SIlya Dryomov } 462519079203SIlya Dryomov lreq->notify_finish_error = return_code; 462619079203SIlya Dryomov complete_all(&lreq->notify_finish_wait); 462719079203SIlya Dryomov } 4628922dab61SIlya Dryomov } else { 4629922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 4630922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 4631922dab61SIlya Dryomov if (!lwork) { 4632922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 4633922dab61SIlya Dryomov goto out_unlock_lreq; 4634922dab61SIlya Dryomov } 4635922dab61SIlya Dryomov 4636922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 4637922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 4638922dab61SIlya Dryomov lwork->notify.payload = payload; 4639922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 4640922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 4641922dab61SIlya Dryomov lwork_queue(lwork); 4642922dab61SIlya Dryomov } 4643922dab61SIlya Dryomov 4644922dab61SIlya Dryomov out_unlock_lreq: 4645922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 4646922dab61SIlya Dryomov out_unlock_osdc: 4647922dab61SIlya Dryomov up_read(&osdc->lock); 4648a40c4f10SYehuda Sadeh return; 4649a40c4f10SYehuda Sadeh 4650a40c4f10SYehuda Sadeh bad: 4651a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 4652a40c4f10SYehuda Sadeh } 4653a40c4f10SYehuda Sadeh 4654a40c4f10SYehuda Sadeh /* 46553d14c5d2SYehuda Sadeh * Register request, send initial attempt. 46563d14c5d2SYehuda Sadeh */ 4657a8af0d68SJeff Layton void ceph_osdc_start_request(struct ceph_osd_client *osdc, 4658a8af0d68SJeff Layton struct ceph_osd_request *req) 46593d14c5d2SYehuda Sadeh { 46605aea3dcdSIlya Dryomov down_read(&osdc->lock); 46615aea3dcdSIlya Dryomov submit_request(req, false); 46625aea3dcdSIlya Dryomov up_read(&osdc->lock); 46633d14c5d2SYehuda Sadeh } 46643d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 46653d14c5d2SYehuda Sadeh 46663d14c5d2SYehuda Sadeh /* 4667d0bb883cSIlya Dryomov * Unregister request. If @req was registered, it isn't completed: 4668d0bb883cSIlya Dryomov * r_result isn't set and __complete_request() isn't invoked. 4669d0bb883cSIlya Dryomov * 4670d0bb883cSIlya Dryomov * If @req wasn't registered, this call may have raced with 4671d0bb883cSIlya Dryomov * handle_reply(), in which case r_result would already be set and 4672d0bb883cSIlya Dryomov * __complete_request() would be getting invoked, possibly even 4673d0bb883cSIlya Dryomov * concurrently with this call. 4674c9f9b93dSIlya Dryomov */ 4675c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 4676c9f9b93dSIlya Dryomov { 4677c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 4678c9f9b93dSIlya Dryomov 46795aea3dcdSIlya Dryomov down_write(&osdc->lock); 46805aea3dcdSIlya Dryomov if (req->r_osd) 46815aea3dcdSIlya Dryomov cancel_request(req); 46825aea3dcdSIlya Dryomov up_write(&osdc->lock); 4683c9f9b93dSIlya Dryomov } 4684c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 4685c9f9b93dSIlya Dryomov 4686c9f9b93dSIlya Dryomov /* 468742b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 468842b06965SIlya Dryomov */ 468942b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 469042b06965SIlya Dryomov unsigned long timeout) 469142b06965SIlya Dryomov { 469242b06965SIlya Dryomov long left; 469342b06965SIlya Dryomov 469442b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 46950e76abf2SYan, Zheng left = wait_for_completion_killable_timeout(&req->r_completion, 469642b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 469742b06965SIlya Dryomov if (left <= 0) { 469842b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 469942b06965SIlya Dryomov ceph_osdc_cancel_request(req); 470042b06965SIlya Dryomov } else { 470142b06965SIlya Dryomov left = req->r_result; /* completed */ 470242b06965SIlya Dryomov } 470342b06965SIlya Dryomov 470442b06965SIlya Dryomov return left; 470542b06965SIlya Dryomov } 470642b06965SIlya Dryomov 470742b06965SIlya Dryomov /* 47083d14c5d2SYehuda Sadeh * wait for a request to complete 47093d14c5d2SYehuda Sadeh */ 47103d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 47113d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 47123d14c5d2SYehuda Sadeh { 471342b06965SIlya Dryomov return wait_request_timeout(req, 0); 47143d14c5d2SYehuda Sadeh } 47153d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 47163d14c5d2SYehuda Sadeh 47173d14c5d2SYehuda Sadeh /* 47183d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 47193d14c5d2SYehuda Sadeh */ 47203d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 47213d14c5d2SYehuda Sadeh { 47225aea3dcdSIlya Dryomov struct rb_node *n, *p; 47235aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 47243d14c5d2SYehuda Sadeh 47255aea3dcdSIlya Dryomov again: 47265aea3dcdSIlya Dryomov down_read(&osdc->lock); 47275aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 47285aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 47295aea3dcdSIlya Dryomov 47305aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 47315aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 47325aea3dcdSIlya Dryomov struct ceph_osd_request *req = 47335aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 47345aea3dcdSIlya Dryomov 47353d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 47363d14c5d2SYehuda Sadeh break; 47373d14c5d2SYehuda Sadeh 47385aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 47393d14c5d2SYehuda Sadeh continue; 47403d14c5d2SYehuda Sadeh 47413d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 47425aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 47435aea3dcdSIlya Dryomov up_read(&osdc->lock); 47445aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 47455aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 4746b18b9550SIlya Dryomov wait_for_completion(&req->r_completion); 47473d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 47485aea3dcdSIlya Dryomov goto again; 47493d14c5d2SYehuda Sadeh } 47505aea3dcdSIlya Dryomov 47515aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 47525aea3dcdSIlya Dryomov } 47535aea3dcdSIlya Dryomov 47545aea3dcdSIlya Dryomov up_read(&osdc->lock); 47555aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 47563d14c5d2SYehuda Sadeh } 47573d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 47583d14c5d2SYehuda Sadeh 4759922dab61SIlya Dryomov /* 4760922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 4761922dab61SIlya Dryomov */ 4762922dab61SIlya Dryomov struct ceph_osd_linger_request * 4763922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 4764922dab61SIlya Dryomov struct ceph_object_id *oid, 4765922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4766922dab61SIlya Dryomov rados_watchcb2_t wcb, 4767922dab61SIlya Dryomov rados_watcherrcb_t errcb, 4768922dab61SIlya Dryomov void *data) 4769922dab61SIlya Dryomov { 4770922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4771922dab61SIlya Dryomov int ret; 4772922dab61SIlya Dryomov 4773922dab61SIlya Dryomov lreq = linger_alloc(osdc); 4774922dab61SIlya Dryomov if (!lreq) 4775922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 4776922dab61SIlya Dryomov 477719079203SIlya Dryomov lreq->is_watch = true; 4778922dab61SIlya Dryomov lreq->wcb = wcb; 4779922dab61SIlya Dryomov lreq->errcb = errcb; 4780922dab61SIlya Dryomov lreq->data = data; 4781b07d3c4bSIlya Dryomov lreq->watch_valid_thru = jiffies; 4782922dab61SIlya Dryomov 4783922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 4784922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 478554ea0046SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE; 4786fac02ddfSArnd Bergmann ktime_get_real_ts64(&lreq->mtime); 4787922dab61SIlya Dryomov 478881c65213SIlya Dryomov linger_submit(lreq); 4789922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 4790922dab61SIlya Dryomov if (ret) { 4791922dab61SIlya Dryomov linger_cancel(lreq); 4792922dab61SIlya Dryomov goto err_put_lreq; 4793922dab61SIlya Dryomov } 4794922dab61SIlya Dryomov 4795922dab61SIlya Dryomov return lreq; 4796922dab61SIlya Dryomov 4797922dab61SIlya Dryomov err_put_lreq: 4798922dab61SIlya Dryomov linger_put(lreq); 4799922dab61SIlya Dryomov return ERR_PTR(ret); 4800922dab61SIlya Dryomov } 4801922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 4802922dab61SIlya Dryomov 4803922dab61SIlya Dryomov /* 4804922dab61SIlya Dryomov * Releases a ref. 4805922dab61SIlya Dryomov * 4806922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 4807922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 4808922dab61SIlya Dryomov * with mount_timeout"). 4809922dab61SIlya Dryomov */ 4810922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 4811922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 4812922dab61SIlya Dryomov { 4813922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 4814922dab61SIlya Dryomov struct ceph_osd_request *req; 4815922dab61SIlya Dryomov int ret; 4816922dab61SIlya Dryomov 4817922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4818922dab61SIlya Dryomov if (!req) 4819922dab61SIlya Dryomov return -ENOMEM; 4820922dab61SIlya Dryomov 4821922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4822922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 482354ea0046SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE; 4824fac02ddfSArnd Bergmann ktime_get_real_ts64(&req->r_mtime); 482575dbb685SIlya Dryomov osd_req_op_watch_init(req, 0, CEPH_OSD_WATCH_OP_UNWATCH, 482675dbb685SIlya Dryomov lreq->linger_id, 0); 4827922dab61SIlya Dryomov 4828922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4829922dab61SIlya Dryomov if (ret) 4830922dab61SIlya Dryomov goto out_put_req; 4831922dab61SIlya Dryomov 4832a8af0d68SJeff Layton ceph_osdc_start_request(osdc, req); 4833922dab61SIlya Dryomov linger_cancel(lreq); 4834922dab61SIlya Dryomov linger_put(lreq); 4835922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 4836922dab61SIlya Dryomov 4837922dab61SIlya Dryomov out_put_req: 4838922dab61SIlya Dryomov ceph_osdc_put_request(req); 4839922dab61SIlya Dryomov return ret; 4840922dab61SIlya Dryomov } 4841922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 4842922dab61SIlya Dryomov 4843922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 4844922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 48456d54228fSIlya Dryomov u32 payload_len) 4846922dab61SIlya Dryomov { 4847922dab61SIlya Dryomov struct ceph_osd_req_op *op; 4848922dab61SIlya Dryomov struct ceph_pagelist *pl; 4849922dab61SIlya Dryomov int ret; 4850922dab61SIlya Dryomov 4851042f6498SJeff Layton op = osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 4852922dab61SIlya Dryomov 485333165d47SIlya Dryomov pl = ceph_pagelist_alloc(GFP_NOIO); 4854922dab61SIlya Dryomov if (!pl) 4855922dab61SIlya Dryomov return -ENOMEM; 4856922dab61SIlya Dryomov 4857922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 4858922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 4859922dab61SIlya Dryomov if (payload) { 4860922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 4861922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 4862922dab61SIlya Dryomov } else { 4863922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 4864922dab61SIlya Dryomov } 4865922dab61SIlya Dryomov if (ret) { 4866922dab61SIlya Dryomov ceph_pagelist_release(pl); 4867922dab61SIlya Dryomov return -ENOMEM; 4868922dab61SIlya Dryomov } 4869922dab61SIlya Dryomov 4870922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 4871922dab61SIlya Dryomov op->indata_len = pl->length; 4872922dab61SIlya Dryomov return 0; 4873922dab61SIlya Dryomov } 4874922dab61SIlya Dryomov 4875922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 4876922dab61SIlya Dryomov struct ceph_object_id *oid, 4877922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4878922dab61SIlya Dryomov u64 notify_id, 4879922dab61SIlya Dryomov u64 cookie, 4880922dab61SIlya Dryomov void *payload, 48816d54228fSIlya Dryomov u32 payload_len) 4882922dab61SIlya Dryomov { 4883922dab61SIlya Dryomov struct ceph_osd_request *req; 4884922dab61SIlya Dryomov int ret; 4885922dab61SIlya Dryomov 4886922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4887922dab61SIlya Dryomov if (!req) 4888922dab61SIlya Dryomov return -ENOMEM; 4889922dab61SIlya Dryomov 4890922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 4891922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 4892922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 4893922dab61SIlya Dryomov 489426f887e0SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 489526f887e0SIlya Dryomov payload_len); 4896922dab61SIlya Dryomov if (ret) 4897922dab61SIlya Dryomov goto out_put_req; 4898922dab61SIlya Dryomov 489926f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4900922dab61SIlya Dryomov if (ret) 4901922dab61SIlya Dryomov goto out_put_req; 4902922dab61SIlya Dryomov 4903a8af0d68SJeff Layton ceph_osdc_start_request(osdc, req); 4904922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 4905922dab61SIlya Dryomov 4906922dab61SIlya Dryomov out_put_req: 4907922dab61SIlya Dryomov ceph_osdc_put_request(req); 4908922dab61SIlya Dryomov return ret; 4909922dab61SIlya Dryomov } 4910922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 4911922dab61SIlya Dryomov 491219079203SIlya Dryomov /* 491319079203SIlya Dryomov * @timeout: in seconds 491419079203SIlya Dryomov * 491519079203SIlya Dryomov * @preply_{pages,len} are initialized both on success and error. 491619079203SIlya Dryomov * The caller is responsible for: 491719079203SIlya Dryomov * 491819079203SIlya Dryomov * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) 491919079203SIlya Dryomov */ 492019079203SIlya Dryomov int ceph_osdc_notify(struct ceph_osd_client *osdc, 492119079203SIlya Dryomov struct ceph_object_id *oid, 492219079203SIlya Dryomov struct ceph_object_locator *oloc, 492319079203SIlya Dryomov void *payload, 49246d54228fSIlya Dryomov u32 payload_len, 492519079203SIlya Dryomov u32 timeout, 492619079203SIlya Dryomov struct page ***preply_pages, 492719079203SIlya Dryomov size_t *preply_len) 492819079203SIlya Dryomov { 492919079203SIlya Dryomov struct ceph_osd_linger_request *lreq; 493019079203SIlya Dryomov int ret; 493119079203SIlya Dryomov 493219079203SIlya Dryomov WARN_ON(!timeout); 493319079203SIlya Dryomov if (preply_pages) { 493419079203SIlya Dryomov *preply_pages = NULL; 493519079203SIlya Dryomov *preply_len = 0; 493619079203SIlya Dryomov } 493719079203SIlya Dryomov 493819079203SIlya Dryomov lreq = linger_alloc(osdc); 493919079203SIlya Dryomov if (!lreq) 494019079203SIlya Dryomov return -ENOMEM; 494119079203SIlya Dryomov 494275dbb685SIlya Dryomov lreq->request_pl = ceph_pagelist_alloc(GFP_NOIO); 494375dbb685SIlya Dryomov if (!lreq->request_pl) { 494475dbb685SIlya Dryomov ret = -ENOMEM; 494575dbb685SIlya Dryomov goto out_put_lreq; 494675dbb685SIlya Dryomov } 494775dbb685SIlya Dryomov 494875dbb685SIlya Dryomov ret = ceph_pagelist_encode_32(lreq->request_pl, 1); /* prot_ver */ 494975dbb685SIlya Dryomov ret |= ceph_pagelist_encode_32(lreq->request_pl, timeout); 495075dbb685SIlya Dryomov ret |= ceph_pagelist_encode_32(lreq->request_pl, payload_len); 495175dbb685SIlya Dryomov ret |= ceph_pagelist_append(lreq->request_pl, payload, payload_len); 495275dbb685SIlya Dryomov if (ret) { 495375dbb685SIlya Dryomov ret = -ENOMEM; 495475dbb685SIlya Dryomov goto out_put_lreq; 495575dbb685SIlya Dryomov } 495675dbb685SIlya Dryomov 495775dbb685SIlya Dryomov /* for notify_id */ 495875dbb685SIlya Dryomov lreq->notify_id_pages = ceph_alloc_page_vector(1, GFP_NOIO); 495975dbb685SIlya Dryomov if (IS_ERR(lreq->notify_id_pages)) { 496075dbb685SIlya Dryomov ret = PTR_ERR(lreq->notify_id_pages); 496175dbb685SIlya Dryomov lreq->notify_id_pages = NULL; 496275dbb685SIlya Dryomov goto out_put_lreq; 496375dbb685SIlya Dryomov } 496475dbb685SIlya Dryomov 496519079203SIlya Dryomov lreq->preply_pages = preply_pages; 496619079203SIlya Dryomov lreq->preply_len = preply_len; 496719079203SIlya Dryomov 496819079203SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 496919079203SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 497019079203SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_READ; 497119079203SIlya Dryomov 497281c65213SIlya Dryomov linger_submit(lreq); 497319079203SIlya Dryomov ret = linger_reg_commit_wait(lreq); 497419079203SIlya Dryomov if (!ret) 4975e6e28432SIlya Dryomov ret = linger_notify_finish_wait(lreq, 4976e6e28432SIlya Dryomov msecs_to_jiffies(2 * timeout * MSEC_PER_SEC)); 497719079203SIlya Dryomov else 497819079203SIlya Dryomov dout("lreq %p failed to initiate notify %d\n", lreq, ret); 497919079203SIlya Dryomov 498019079203SIlya Dryomov linger_cancel(lreq); 498119079203SIlya Dryomov out_put_lreq: 498219079203SIlya Dryomov linger_put(lreq); 498319079203SIlya Dryomov return ret; 498419079203SIlya Dryomov } 498519079203SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify); 498619079203SIlya Dryomov 49873d14c5d2SYehuda Sadeh /* 4988b07d3c4bSIlya Dryomov * Return the number of milliseconds since the watch was last 4989b07d3c4bSIlya Dryomov * confirmed, or an error. If there is an error, the watch is no 4990b07d3c4bSIlya Dryomov * longer valid, and should be destroyed with ceph_osdc_unwatch(). 4991b07d3c4bSIlya Dryomov */ 4992b07d3c4bSIlya Dryomov int ceph_osdc_watch_check(struct ceph_osd_client *osdc, 4993b07d3c4bSIlya Dryomov struct ceph_osd_linger_request *lreq) 4994b07d3c4bSIlya Dryomov { 4995b07d3c4bSIlya Dryomov unsigned long stamp, age; 4996b07d3c4bSIlya Dryomov int ret; 4997b07d3c4bSIlya Dryomov 4998b07d3c4bSIlya Dryomov down_read(&osdc->lock); 4999b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 5000b07d3c4bSIlya Dryomov stamp = lreq->watch_valid_thru; 5001b07d3c4bSIlya Dryomov if (!list_empty(&lreq->pending_lworks)) { 5002b07d3c4bSIlya Dryomov struct linger_work *lwork = 5003b07d3c4bSIlya Dryomov list_first_entry(&lreq->pending_lworks, 5004b07d3c4bSIlya Dryomov struct linger_work, 5005b07d3c4bSIlya Dryomov pending_item); 5006b07d3c4bSIlya Dryomov 5007b07d3c4bSIlya Dryomov if (time_before(lwork->queued_stamp, stamp)) 5008b07d3c4bSIlya Dryomov stamp = lwork->queued_stamp; 5009b07d3c4bSIlya Dryomov } 5010b07d3c4bSIlya Dryomov age = jiffies - stamp; 5011b07d3c4bSIlya Dryomov dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, 5012b07d3c4bSIlya Dryomov lreq, lreq->linger_id, age, lreq->last_error); 5013b07d3c4bSIlya Dryomov /* we are truncating to msecs, so return a safe upper bound */ 5014b07d3c4bSIlya Dryomov ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); 5015b07d3c4bSIlya Dryomov 5016b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 5017b07d3c4bSIlya Dryomov up_read(&osdc->lock); 5018b07d3c4bSIlya Dryomov return ret; 5019b07d3c4bSIlya Dryomov } 5020b07d3c4bSIlya Dryomov 5021a4ed38d7SDouglas Fuller static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) 5022a4ed38d7SDouglas Fuller { 5023a4ed38d7SDouglas Fuller u8 struct_v; 5024a4ed38d7SDouglas Fuller u32 struct_len; 5025a4ed38d7SDouglas Fuller int ret; 5026a4ed38d7SDouglas Fuller 5027a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 2, "watch_item_t", 5028a4ed38d7SDouglas Fuller &struct_v, &struct_len); 5029a4ed38d7SDouglas Fuller if (ret) 503051fc7ab4SJeff Layton goto bad; 5031a4ed38d7SDouglas Fuller 503251fc7ab4SJeff Layton ret = -EINVAL; 503351fc7ab4SJeff Layton ceph_decode_copy_safe(p, end, &item->name, sizeof(item->name), bad); 503451fc7ab4SJeff Layton ceph_decode_64_safe(p, end, item->cookie, bad); 503551fc7ab4SJeff Layton ceph_decode_skip_32(p, end, bad); /* skip timeout seconds */ 503651fc7ab4SJeff Layton 5037a4ed38d7SDouglas Fuller if (struct_v >= 2) { 503851fc7ab4SJeff Layton ret = ceph_decode_entity_addr(p, end, &item->addr); 503951fc7ab4SJeff Layton if (ret) 504051fc7ab4SJeff Layton goto bad; 504151fc7ab4SJeff Layton } else { 504251fc7ab4SJeff Layton ret = 0; 5043a4ed38d7SDouglas Fuller } 5044a4ed38d7SDouglas Fuller 5045a4ed38d7SDouglas Fuller dout("%s %s%llu cookie %llu addr %s\n", __func__, 5046a4ed38d7SDouglas Fuller ENTITY_NAME(item->name), item->cookie, 5047b726ec97SJeff Layton ceph_pr_addr(&item->addr)); 504851fc7ab4SJeff Layton bad: 504951fc7ab4SJeff Layton return ret; 5050a4ed38d7SDouglas Fuller } 5051a4ed38d7SDouglas Fuller 5052a4ed38d7SDouglas Fuller static int decode_watchers(void **p, void *end, 5053a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 5054a4ed38d7SDouglas Fuller u32 *num_watchers) 5055a4ed38d7SDouglas Fuller { 5056a4ed38d7SDouglas Fuller u8 struct_v; 5057a4ed38d7SDouglas Fuller u32 struct_len; 5058a4ed38d7SDouglas Fuller int i; 5059a4ed38d7SDouglas Fuller int ret; 5060a4ed38d7SDouglas Fuller 5061a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t", 5062a4ed38d7SDouglas Fuller &struct_v, &struct_len); 5063a4ed38d7SDouglas Fuller if (ret) 5064a4ed38d7SDouglas Fuller return ret; 5065a4ed38d7SDouglas Fuller 5066a4ed38d7SDouglas Fuller *num_watchers = ceph_decode_32(p); 5067a4ed38d7SDouglas Fuller *watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO); 5068a4ed38d7SDouglas Fuller if (!*watchers) 5069a4ed38d7SDouglas Fuller return -ENOMEM; 5070a4ed38d7SDouglas Fuller 5071a4ed38d7SDouglas Fuller for (i = 0; i < *num_watchers; i++) { 5072a4ed38d7SDouglas Fuller ret = decode_watcher(p, end, *watchers + i); 5073a4ed38d7SDouglas Fuller if (ret) { 5074a4ed38d7SDouglas Fuller kfree(*watchers); 5075a4ed38d7SDouglas Fuller return ret; 5076a4ed38d7SDouglas Fuller } 5077a4ed38d7SDouglas Fuller } 5078a4ed38d7SDouglas Fuller 5079a4ed38d7SDouglas Fuller return 0; 5080a4ed38d7SDouglas Fuller } 5081a4ed38d7SDouglas Fuller 5082a4ed38d7SDouglas Fuller /* 5083a4ed38d7SDouglas Fuller * On success, the caller is responsible for: 5084a4ed38d7SDouglas Fuller * 5085a4ed38d7SDouglas Fuller * kfree(watchers); 5086a4ed38d7SDouglas Fuller */ 5087a4ed38d7SDouglas Fuller int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, 5088a4ed38d7SDouglas Fuller struct ceph_object_id *oid, 5089a4ed38d7SDouglas Fuller struct ceph_object_locator *oloc, 5090a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 5091a4ed38d7SDouglas Fuller u32 *num_watchers) 5092a4ed38d7SDouglas Fuller { 5093a4ed38d7SDouglas Fuller struct ceph_osd_request *req; 5094a4ed38d7SDouglas Fuller struct page **pages; 5095a4ed38d7SDouglas Fuller int ret; 5096a4ed38d7SDouglas Fuller 5097a4ed38d7SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 5098a4ed38d7SDouglas Fuller if (!req) 5099a4ed38d7SDouglas Fuller return -ENOMEM; 5100a4ed38d7SDouglas Fuller 5101a4ed38d7SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 5102a4ed38d7SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 5103a4ed38d7SDouglas Fuller req->r_flags = CEPH_OSD_FLAG_READ; 5104a4ed38d7SDouglas Fuller 5105a4ed38d7SDouglas Fuller pages = ceph_alloc_page_vector(1, GFP_NOIO); 5106a4ed38d7SDouglas Fuller if (IS_ERR(pages)) { 5107a4ed38d7SDouglas Fuller ret = PTR_ERR(pages); 5108a4ed38d7SDouglas Fuller goto out_put_req; 5109a4ed38d7SDouglas Fuller } 5110a4ed38d7SDouglas Fuller 5111a4ed38d7SDouglas Fuller osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0); 5112a4ed38d7SDouglas Fuller ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers, 5113a4ed38d7SDouglas Fuller response_data), 5114a4ed38d7SDouglas Fuller pages, PAGE_SIZE, 0, false, true); 5115a4ed38d7SDouglas Fuller 511626f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 511726f887e0SIlya Dryomov if (ret) 511826f887e0SIlya Dryomov goto out_put_req; 511926f887e0SIlya Dryomov 5120a8af0d68SJeff Layton ceph_osdc_start_request(osdc, req); 5121a4ed38d7SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 5122a4ed38d7SDouglas Fuller if (ret >= 0) { 5123a4ed38d7SDouglas Fuller void *p = page_address(pages[0]); 5124a4ed38d7SDouglas Fuller void *const end = p + req->r_ops[0].outdata_len; 5125a4ed38d7SDouglas Fuller 5126a4ed38d7SDouglas Fuller ret = decode_watchers(&p, end, watchers, num_watchers); 5127a4ed38d7SDouglas Fuller } 5128a4ed38d7SDouglas Fuller 5129a4ed38d7SDouglas Fuller out_put_req: 5130a4ed38d7SDouglas Fuller ceph_osdc_put_request(req); 5131a4ed38d7SDouglas Fuller return ret; 5132a4ed38d7SDouglas Fuller } 5133a4ed38d7SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_list_watchers); 5134a4ed38d7SDouglas Fuller 5135b07d3c4bSIlya Dryomov /* 5136dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 5137dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 5138dd935f44SJosh Durgin */ 5139f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 5140dd935f44SJosh Durgin { 514199d16943SIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 5142dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 5143dd935f44SJosh Durgin } 5144dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 5145dd935f44SJosh Durgin 51467cca78c9SIlya Dryomov void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) 51477cca78c9SIlya Dryomov { 51487cca78c9SIlya Dryomov down_read(&osdc->lock); 51497cca78c9SIlya Dryomov maybe_request_map(osdc); 51507cca78c9SIlya Dryomov up_read(&osdc->lock); 51517cca78c9SIlya Dryomov } 51527cca78c9SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_maybe_request_map); 5153dd935f44SJosh Durgin 5154dd935f44SJosh Durgin /* 5155428a7158SDouglas Fuller * Execute an OSD class method on an object. 5156428a7158SDouglas Fuller * 5157428a7158SDouglas Fuller * @flags: CEPH_OSD_FLAG_* 51582544a020SIlya Dryomov * @resp_len: in/out param for reply length 5159428a7158SDouglas Fuller */ 5160428a7158SDouglas Fuller int ceph_osdc_call(struct ceph_osd_client *osdc, 5161428a7158SDouglas Fuller struct ceph_object_id *oid, 5162428a7158SDouglas Fuller struct ceph_object_locator *oloc, 5163428a7158SDouglas Fuller const char *class, const char *method, 5164428a7158SDouglas Fuller unsigned int flags, 5165428a7158SDouglas Fuller struct page *req_page, size_t req_len, 516668ada915SIlya Dryomov struct page **resp_pages, size_t *resp_len) 5167428a7158SDouglas Fuller { 5168428a7158SDouglas Fuller struct ceph_osd_request *req; 5169428a7158SDouglas Fuller int ret; 5170428a7158SDouglas Fuller 517168ada915SIlya Dryomov if (req_len > PAGE_SIZE) 51722544a020SIlya Dryomov return -E2BIG; 51732544a020SIlya Dryomov 5174428a7158SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 5175428a7158SDouglas Fuller if (!req) 5176428a7158SDouglas Fuller return -ENOMEM; 5177428a7158SDouglas Fuller 5178428a7158SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 5179428a7158SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 5180428a7158SDouglas Fuller req->r_flags = flags; 5181428a7158SDouglas Fuller 518224639ce5SIlya Dryomov ret = osd_req_op_cls_init(req, 0, class, method); 5183fe943d50SChengguang Xu if (ret) 5184fe943d50SChengguang Xu goto out_put_req; 5185fe943d50SChengguang Xu 5186428a7158SDouglas Fuller if (req_page) 5187428a7158SDouglas Fuller osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len, 5188428a7158SDouglas Fuller 0, false, false); 518968ada915SIlya Dryomov if (resp_pages) 519068ada915SIlya Dryomov osd_req_op_cls_response_data_pages(req, 0, resp_pages, 51912544a020SIlya Dryomov *resp_len, 0, false, false); 5192428a7158SDouglas Fuller 519326f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 519426f887e0SIlya Dryomov if (ret) 519526f887e0SIlya Dryomov goto out_put_req; 519626f887e0SIlya Dryomov 5197a8af0d68SJeff Layton ceph_osdc_start_request(osdc, req); 5198428a7158SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 5199428a7158SDouglas Fuller if (ret >= 0) { 5200428a7158SDouglas Fuller ret = req->r_ops[0].rval; 520168ada915SIlya Dryomov if (resp_pages) 5202428a7158SDouglas Fuller *resp_len = req->r_ops[0].outdata_len; 5203428a7158SDouglas Fuller } 5204428a7158SDouglas Fuller 5205428a7158SDouglas Fuller out_put_req: 5206428a7158SDouglas Fuller ceph_osdc_put_request(req); 5207428a7158SDouglas Fuller return ret; 5208428a7158SDouglas Fuller } 5209428a7158SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_call); 5210428a7158SDouglas Fuller 5211428a7158SDouglas Fuller /* 5212120a75eaSYan, Zheng * reset all osd connections 5213120a75eaSYan, Zheng */ 5214120a75eaSYan, Zheng void ceph_osdc_reopen_osds(struct ceph_osd_client *osdc) 5215120a75eaSYan, Zheng { 5216120a75eaSYan, Zheng struct rb_node *n; 5217120a75eaSYan, Zheng 5218120a75eaSYan, Zheng down_write(&osdc->lock); 5219120a75eaSYan, Zheng for (n = rb_first(&osdc->osds); n; ) { 5220120a75eaSYan, Zheng struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 5221120a75eaSYan, Zheng 5222120a75eaSYan, Zheng n = rb_next(n); 5223120a75eaSYan, Zheng if (!reopen_osd(osd)) 5224120a75eaSYan, Zheng kick_osd_requests(osd); 5225120a75eaSYan, Zheng } 5226120a75eaSYan, Zheng up_write(&osdc->lock); 5227120a75eaSYan, Zheng } 5228120a75eaSYan, Zheng 5229120a75eaSYan, Zheng /* 52303d14c5d2SYehuda Sadeh * init, shutdown 52313d14c5d2SYehuda Sadeh */ 52323d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 52333d14c5d2SYehuda Sadeh { 52343d14c5d2SYehuda Sadeh int err; 52353d14c5d2SYehuda Sadeh 52363d14c5d2SYehuda Sadeh dout("init\n"); 52373d14c5d2SYehuda Sadeh osdc->client = client; 52385aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 52393d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 52403d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 52419dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 52425aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 52435aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 52445aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 5245264048afSIlya Dryomov osdc->last_linger_id = CEPH_LINGER_ID_START; 5246922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 52474609245eSIlya Dryomov osdc->map_checks = RB_ROOT; 52484609245eSIlya Dryomov osdc->linger_map_checks = RB_ROOT; 52493d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 52503d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 52513d14c5d2SYehuda Sadeh 52523d14c5d2SYehuda Sadeh err = -ENOMEM; 5253e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 5254e5253a7bSIlya Dryomov if (!osdc->osdmap) 5255e5253a7bSIlya Dryomov goto out; 5256e5253a7bSIlya Dryomov 52579e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 52589e767adbSIlya Dryomov ceph_osd_request_cache); 52593d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 5260e5253a7bSIlya Dryomov goto out_map; 52613d14c5d2SYehuda Sadeh 5262d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 52630d9c1ab3SIlya Dryomov PAGE_SIZE, CEPH_OSD_SLAB_OPS, 10, "osd_op"); 52643d14c5d2SYehuda Sadeh if (err < 0) 52653d14c5d2SYehuda Sadeh goto out_mempool; 5266d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 52670d9c1ab3SIlya Dryomov PAGE_SIZE, CEPH_OSD_SLAB_OPS, 10, 52680d9c1ab3SIlya Dryomov "osd_op_reply"); 52693d14c5d2SYehuda Sadeh if (err < 0) 52703d14c5d2SYehuda Sadeh goto out_msgpool; 5271a40c4f10SYehuda Sadeh 5272dbcae088SDan Carpenter err = -ENOMEM; 5273a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 5274dbcae088SDan Carpenter if (!osdc->notify_wq) 5275c172ec5cSIlya Dryomov goto out_msgpool_reply; 5276c172ec5cSIlya Dryomov 527788bc1922SIlya Dryomov osdc->completion_wq = create_singlethread_workqueue("ceph-completion"); 527888bc1922SIlya Dryomov if (!osdc->completion_wq) 527988bc1922SIlya Dryomov goto out_notify_wq; 528088bc1922SIlya Dryomov 5281fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 5282fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 5283b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 5284b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 5285b37ee1b9SIlya Dryomov 52863d14c5d2SYehuda Sadeh return 0; 52873d14c5d2SYehuda Sadeh 528888bc1922SIlya Dryomov out_notify_wq: 528988bc1922SIlya Dryomov destroy_workqueue(osdc->notify_wq); 5290c172ec5cSIlya Dryomov out_msgpool_reply: 5291c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 52923d14c5d2SYehuda Sadeh out_msgpool: 52933d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 52943d14c5d2SYehuda Sadeh out_mempool: 52953d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 5296e5253a7bSIlya Dryomov out_map: 5297e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 52983d14c5d2SYehuda Sadeh out: 52993d14c5d2SYehuda Sadeh return err; 53003d14c5d2SYehuda Sadeh } 53013d14c5d2SYehuda Sadeh 53023d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 53033d14c5d2SYehuda Sadeh { 530488bc1922SIlya Dryomov destroy_workqueue(osdc->completion_wq); 5305a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 53063d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 53073d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 530842a2c09fSIlya Dryomov 53095aea3dcdSIlya Dryomov down_write(&osdc->lock); 531042a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 531142a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 531242a2c09fSIlya Dryomov struct ceph_osd, o_node); 53135aea3dcdSIlya Dryomov close_osd(osd); 531442a2c09fSIlya Dryomov } 53155aea3dcdSIlya Dryomov up_write(&osdc->lock); 531602113a0fSElena Reshetova WARN_ON(refcount_read(&osdc->homeless_osd.o_ref) != 1); 53175aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 53185aea3dcdSIlya Dryomov 53195aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 5320922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 53214609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); 53224609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); 53235aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 53245aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 532542a2c09fSIlya Dryomov 53263d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 53273d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 53283d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 53293d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 53303d14c5d2SYehuda Sadeh } 53313d14c5d2SYehuda Sadeh 5332aca39d9eSLuís Henriques int osd_req_op_copy_from_init(struct ceph_osd_request *req, 533323ddf9beSLuis Henriques u64 src_snapid, u64 src_version, 533423ddf9beSLuis Henriques struct ceph_object_id *src_oid, 533523ddf9beSLuis Henriques struct ceph_object_locator *src_oloc, 533623ddf9beSLuis Henriques u32 src_fadvise_flags, 533723ddf9beSLuis Henriques u32 dst_fadvise_flags, 533878beb0ffSLuis Henriques u32 truncate_seq, u64 truncate_size, 533923ddf9beSLuis Henriques u8 copy_from_flags) 534023ddf9beSLuis Henriques { 534123ddf9beSLuis Henriques struct ceph_osd_req_op *op; 534223ddf9beSLuis Henriques struct page **pages; 534323ddf9beSLuis Henriques void *p, *end; 534423ddf9beSLuis Henriques 534523ddf9beSLuis Henriques pages = ceph_alloc_page_vector(1, GFP_KERNEL); 534623ddf9beSLuis Henriques if (IS_ERR(pages)) 534723ddf9beSLuis Henriques return PTR_ERR(pages); 534823ddf9beSLuis Henriques 5349042f6498SJeff Layton op = osd_req_op_init(req, 0, CEPH_OSD_OP_COPY_FROM2, 535078beb0ffSLuis Henriques dst_fadvise_flags); 535123ddf9beSLuis Henriques op->copy_from.snapid = src_snapid; 535223ddf9beSLuis Henriques op->copy_from.src_version = src_version; 535323ddf9beSLuis Henriques op->copy_from.flags = copy_from_flags; 535423ddf9beSLuis Henriques op->copy_from.src_fadvise_flags = src_fadvise_flags; 535523ddf9beSLuis Henriques 535623ddf9beSLuis Henriques p = page_address(pages[0]); 535723ddf9beSLuis Henriques end = p + PAGE_SIZE; 535823ddf9beSLuis Henriques ceph_encode_string(&p, end, src_oid->name, src_oid->name_len); 535923ddf9beSLuis Henriques encode_oloc(&p, end, src_oloc); 536078beb0ffSLuis Henriques ceph_encode_32(&p, truncate_seq); 536178beb0ffSLuis Henriques ceph_encode_64(&p, truncate_size); 536223ddf9beSLuis Henriques op->indata_len = PAGE_SIZE - (end - p); 536323ddf9beSLuis Henriques 536423ddf9beSLuis Henriques ceph_osd_data_pages_init(&op->copy_from.osd_data, pages, 536523ddf9beSLuis Henriques op->indata_len, 0, false, true); 536623ddf9beSLuis Henriques return 0; 536723ddf9beSLuis Henriques } 5368aca39d9eSLuís Henriques EXPORT_SYMBOL(osd_req_op_copy_from_init); 536923ddf9beSLuis Henriques 537057a35dfbSChengguang Xu int __init ceph_osdc_setup(void) 53715522ae0bSAlex Elder { 53723f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 53733f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 53743f1af42aSIlya Dryomov 53755522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 53763f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 53773f1af42aSIlya Dryomov 0, 0, NULL); 53785522ae0bSAlex Elder 53795522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 53805522ae0bSAlex Elder } 53815522ae0bSAlex Elder 53825522ae0bSAlex Elder void ceph_osdc_cleanup(void) 53835522ae0bSAlex Elder { 53845522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 53855522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 53865522ae0bSAlex Elder ceph_osd_request_cache = NULL; 53875522ae0bSAlex Elder } 53885522ae0bSAlex Elder 53893d14c5d2SYehuda Sadeh /* 53903d14c5d2SYehuda Sadeh * handle incoming message 53913d14c5d2SYehuda Sadeh */ 53924972cf60SIlya Dryomov static void osd_dispatch(struct ceph_connection *con, struct ceph_msg *msg) 53933d14c5d2SYehuda Sadeh { 53943d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 53955aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 53963d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 53973d14c5d2SYehuda Sadeh 53983d14c5d2SYehuda Sadeh switch (type) { 53993d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 54003d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 54013d14c5d2SYehuda Sadeh break; 54023d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 54035aea3dcdSIlya Dryomov handle_reply(osd, msg); 54043d14c5d2SYehuda Sadeh break; 5405a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5406a02a946dSIlya Dryomov handle_backoff(osd, msg); 5407a02a946dSIlya Dryomov break; 5408a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 5409a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 5410a40c4f10SYehuda Sadeh break; 54113d14c5d2SYehuda Sadeh 54123d14c5d2SYehuda Sadeh default: 54133d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 54143d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 54153d14c5d2SYehuda Sadeh } 54165aea3dcdSIlya Dryomov 54173d14c5d2SYehuda Sadeh ceph_msg_put(msg); 54183d14c5d2SYehuda Sadeh } 54193d14c5d2SYehuda Sadeh 5420f628d799SJeff Layton /* How much sparse data was requested? */ 5421f628d799SJeff Layton static u64 sparse_data_requested(struct ceph_osd_request *req) 5422f628d799SJeff Layton { 5423f628d799SJeff Layton u64 len = 0; 5424f628d799SJeff Layton 5425f628d799SJeff Layton if (req->r_flags & CEPH_OSD_FLAG_READ) { 5426f628d799SJeff Layton int i; 5427f628d799SJeff Layton 5428f628d799SJeff Layton for (i = 0; i < req->r_num_ops; ++i) { 5429f628d799SJeff Layton struct ceph_osd_req_op *op = &req->r_ops[i]; 5430f628d799SJeff Layton 5431f628d799SJeff Layton if (op->op == CEPH_OSD_OP_SPARSE_READ) 5432f628d799SJeff Layton len += op->extent.length; 5433f628d799SJeff Layton } 5434f628d799SJeff Layton } 5435f628d799SJeff Layton return len; 5436f628d799SJeff Layton } 5437f628d799SJeff Layton 54383d14c5d2SYehuda Sadeh /* 5439d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 5440d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 5441d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 54423d14c5d2SYehuda Sadeh */ 54433d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 54443d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 54453d14c5d2SYehuda Sadeh int *skip) 54463d14c5d2SYehuda Sadeh { 54473d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 54483d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 54495aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 54503d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 54513f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 54523d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 54535aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 5454f628d799SJeff Layton u64 srlen; 54553d14c5d2SYehuda Sadeh 54565aea3dcdSIlya Dryomov down_read(&osdc->lock); 54575aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 54585aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 54595aea3dcdSIlya Dryomov *skip = 1; 54605aea3dcdSIlya Dryomov goto out_unlock_osdc; 54615aea3dcdSIlya Dryomov } 54625aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 54635aea3dcdSIlya Dryomov 54645aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 54655aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 54663d14c5d2SYehuda Sadeh if (!req) { 5467cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 5468cd8140c6SIlya Dryomov osd->o_osd, tid); 5469d15f9d69SIlya Dryomov *skip = 1; 54705aea3dcdSIlya Dryomov goto out_unlock_session; 54713d14c5d2SYehuda Sadeh } 54723d14c5d2SYehuda Sadeh 54738921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 54743d14c5d2SYehuda Sadeh 5475f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 5476d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 5477d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 5478d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 54793f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 54803f0a4ac5SIlya Dryomov false); 54813d14c5d2SYehuda Sadeh if (!m) 54825aea3dcdSIlya Dryomov goto out_unlock_session; 54833d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 54843d14c5d2SYehuda Sadeh req->r_reply = m; 54853d14c5d2SYehuda Sadeh } 54863d14c5d2SYehuda Sadeh 5487f628d799SJeff Layton srlen = sparse_data_requested(req); 5488f628d799SJeff Layton if (!srlen && data_len > req->r_reply->data_length) { 5489d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 5490d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 5491d15f9d69SIlya Dryomov req->r_reply->data_length); 54923d14c5d2SYehuda Sadeh m = NULL; 5493d15f9d69SIlya Dryomov *skip = 1; 54945aea3dcdSIlya Dryomov goto out_unlock_session; 54953d14c5d2SYehuda Sadeh } 5496d15f9d69SIlya Dryomov 5497d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 5498f628d799SJeff Layton m->sparse_read = (bool)srlen; 5499f628d799SJeff Layton 55003d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 55013d14c5d2SYehuda Sadeh 55025aea3dcdSIlya Dryomov out_unlock_session: 55035aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 55045aea3dcdSIlya Dryomov out_unlock_osdc: 55055aea3dcdSIlya Dryomov up_read(&osdc->lock); 55063d14c5d2SYehuda Sadeh return m; 55073d14c5d2SYehuda Sadeh } 55083d14c5d2SYehuda Sadeh 550919079203SIlya Dryomov static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) 551019079203SIlya Dryomov { 551119079203SIlya Dryomov struct ceph_msg *m; 551219079203SIlya Dryomov int type = le16_to_cpu(hdr->type); 551319079203SIlya Dryomov u32 front_len = le32_to_cpu(hdr->front_len); 551419079203SIlya Dryomov u32 data_len = le32_to_cpu(hdr->data_len); 551519079203SIlya Dryomov 55160d9c1ab3SIlya Dryomov m = ceph_msg_new2(type, front_len, 1, GFP_NOIO, false); 551719079203SIlya Dryomov if (!m) 551819079203SIlya Dryomov return NULL; 551919079203SIlya Dryomov 552019079203SIlya Dryomov if (data_len) { 552119079203SIlya Dryomov struct page **pages; 552219079203SIlya Dryomov 552319079203SIlya Dryomov pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), 552419079203SIlya Dryomov GFP_NOIO); 5525c22e853aSWei Yongjun if (IS_ERR(pages)) { 552619079203SIlya Dryomov ceph_msg_put(m); 552719079203SIlya Dryomov return NULL; 552819079203SIlya Dryomov } 552919079203SIlya Dryomov 5530e8862740SIlya Dryomov ceph_msg_data_add_pages(m, pages, data_len, 0, true); 553119079203SIlya Dryomov } 553219079203SIlya Dryomov 553319079203SIlya Dryomov return m; 553419079203SIlya Dryomov } 553519079203SIlya Dryomov 55364972cf60SIlya Dryomov static struct ceph_msg *osd_alloc_msg(struct ceph_connection *con, 55373d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 55383d14c5d2SYehuda Sadeh int *skip) 55393d14c5d2SYehuda Sadeh { 55403d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 55413d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 55423d14c5d2SYehuda Sadeh 55431c20f2d2SAlex Elder *skip = 0; 55443d14c5d2SYehuda Sadeh switch (type) { 55453d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 5546a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5547a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 554819079203SIlya Dryomov return alloc_msg_with_page_vector(hdr); 55493d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 55503d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 55513d14c5d2SYehuda Sadeh default: 55525aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 55535aea3dcdSIlya Dryomov osd->o_osd, type); 55543d14c5d2SYehuda Sadeh *skip = 1; 55553d14c5d2SYehuda Sadeh return NULL; 55563d14c5d2SYehuda Sadeh } 55573d14c5d2SYehuda Sadeh } 55583d14c5d2SYehuda Sadeh 55593d14c5d2SYehuda Sadeh /* 55603d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 55613d14c5d2SYehuda Sadeh */ 55624972cf60SIlya Dryomov static struct ceph_connection *osd_get_con(struct ceph_connection *con) 55633d14c5d2SYehuda Sadeh { 55643d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 55653d14c5d2SYehuda Sadeh if (get_osd(osd)) 55663d14c5d2SYehuda Sadeh return con; 55673d14c5d2SYehuda Sadeh return NULL; 55683d14c5d2SYehuda Sadeh } 55693d14c5d2SYehuda Sadeh 55704972cf60SIlya Dryomov static void osd_put_con(struct ceph_connection *con) 55713d14c5d2SYehuda Sadeh { 55723d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 55733d14c5d2SYehuda Sadeh put_osd(osd); 55743d14c5d2SYehuda Sadeh } 55753d14c5d2SYehuda Sadeh 55763d14c5d2SYehuda Sadeh /* 55773d14c5d2SYehuda Sadeh * authentication 55783d14c5d2SYehuda Sadeh */ 5579cd1a677cSIlya Dryomov 5580a3530df3SAlex Elder /* 5581a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 5582a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 5583a3530df3SAlex Elder */ 55844972cf60SIlya Dryomov static struct ceph_auth_handshake * 55854972cf60SIlya Dryomov osd_get_authorizer(struct ceph_connection *con, int *proto, int force_new) 55863d14c5d2SYehuda Sadeh { 55873d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 55883d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 55893d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 559074f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 5591ce287162SIlya Dryomov int ret; 55923d14c5d2SYehuda Sadeh 5593ce287162SIlya Dryomov ret = __ceph_auth_get_authorizer(ac, auth, CEPH_ENTITY_TYPE_OSD, 5594ce287162SIlya Dryomov force_new, proto, NULL, NULL); 55953d14c5d2SYehuda Sadeh if (ret) 5596a3530df3SAlex Elder return ERR_PTR(ret); 559774f1869fSAlex Elder 5598a3530df3SAlex Elder return auth; 55993d14c5d2SYehuda Sadeh } 56003d14c5d2SYehuda Sadeh 56014972cf60SIlya Dryomov static int osd_add_authorizer_challenge(struct ceph_connection *con, 56026daca13dSIlya Dryomov void *challenge_buf, int challenge_buf_len) 56036daca13dSIlya Dryomov { 56046daca13dSIlya Dryomov struct ceph_osd *o = con->private; 56056daca13dSIlya Dryomov struct ceph_osd_client *osdc = o->o_osdc; 56066daca13dSIlya Dryomov struct ceph_auth_client *ac = osdc->client->monc.auth; 56076daca13dSIlya Dryomov 56086daca13dSIlya Dryomov return ceph_auth_add_authorizer_challenge(ac, o->o_auth.authorizer, 56096daca13dSIlya Dryomov challenge_buf, challenge_buf_len); 56106daca13dSIlya Dryomov } 56113d14c5d2SYehuda Sadeh 56124972cf60SIlya Dryomov static int osd_verify_authorizer_reply(struct ceph_connection *con) 56133d14c5d2SYehuda Sadeh { 56143d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 56153d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 56163d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 5617285ea34fSIlya Dryomov struct ceph_auth_handshake *auth = &o->o_auth; 56183d14c5d2SYehuda Sadeh 5619285ea34fSIlya Dryomov return ceph_auth_verify_authorizer_reply(ac, auth->authorizer, 5620285ea34fSIlya Dryomov auth->authorizer_reply_buf, auth->authorizer_reply_buf_len, 5621285ea34fSIlya Dryomov NULL, NULL, NULL, NULL); 56223d14c5d2SYehuda Sadeh } 56233d14c5d2SYehuda Sadeh 56244972cf60SIlya Dryomov static int osd_invalidate_authorizer(struct ceph_connection *con) 56253d14c5d2SYehuda Sadeh { 56263d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 56273d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 56283d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 56293d14c5d2SYehuda Sadeh 563027859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 56313d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 56323d14c5d2SYehuda Sadeh } 56333d14c5d2SYehuda Sadeh 5634cd1a677cSIlya Dryomov static int osd_get_auth_request(struct ceph_connection *con, 5635cd1a677cSIlya Dryomov void *buf, int *buf_len, 5636cd1a677cSIlya Dryomov void **authorizer, int *authorizer_len) 5637cd1a677cSIlya Dryomov { 5638cd1a677cSIlya Dryomov struct ceph_osd *o = con->private; 5639cd1a677cSIlya Dryomov struct ceph_auth_client *ac = o->o_osdc->client->monc.auth; 5640cd1a677cSIlya Dryomov struct ceph_auth_handshake *auth = &o->o_auth; 5641cd1a677cSIlya Dryomov int ret; 5642cd1a677cSIlya Dryomov 5643cd1a677cSIlya Dryomov ret = ceph_auth_get_authorizer(ac, auth, CEPH_ENTITY_TYPE_OSD, 5644cd1a677cSIlya Dryomov buf, buf_len); 5645cd1a677cSIlya Dryomov if (ret) 5646cd1a677cSIlya Dryomov return ret; 5647cd1a677cSIlya Dryomov 5648cd1a677cSIlya Dryomov *authorizer = auth->authorizer_buf; 5649cd1a677cSIlya Dryomov *authorizer_len = auth->authorizer_buf_len; 5650cd1a677cSIlya Dryomov return 0; 5651cd1a677cSIlya Dryomov } 5652cd1a677cSIlya Dryomov 5653cd1a677cSIlya Dryomov static int osd_handle_auth_reply_more(struct ceph_connection *con, 5654cd1a677cSIlya Dryomov void *reply, int reply_len, 5655cd1a677cSIlya Dryomov void *buf, int *buf_len, 5656cd1a677cSIlya Dryomov void **authorizer, int *authorizer_len) 5657cd1a677cSIlya Dryomov { 5658cd1a677cSIlya Dryomov struct ceph_osd *o = con->private; 5659cd1a677cSIlya Dryomov struct ceph_auth_client *ac = o->o_osdc->client->monc.auth; 5660cd1a677cSIlya Dryomov struct ceph_auth_handshake *auth = &o->o_auth; 5661cd1a677cSIlya Dryomov int ret; 5662cd1a677cSIlya Dryomov 5663cd1a677cSIlya Dryomov ret = ceph_auth_handle_svc_reply_more(ac, auth, reply, reply_len, 5664cd1a677cSIlya Dryomov buf, buf_len); 5665cd1a677cSIlya Dryomov if (ret) 5666cd1a677cSIlya Dryomov return ret; 5667cd1a677cSIlya Dryomov 5668cd1a677cSIlya Dryomov *authorizer = auth->authorizer_buf; 5669cd1a677cSIlya Dryomov *authorizer_len = auth->authorizer_buf_len; 5670cd1a677cSIlya Dryomov return 0; 5671cd1a677cSIlya Dryomov } 5672cd1a677cSIlya Dryomov 5673cd1a677cSIlya Dryomov static int osd_handle_auth_done(struct ceph_connection *con, 5674cd1a677cSIlya Dryomov u64 global_id, void *reply, int reply_len, 5675cd1a677cSIlya Dryomov u8 *session_key, int *session_key_len, 5676cd1a677cSIlya Dryomov u8 *con_secret, int *con_secret_len) 5677cd1a677cSIlya Dryomov { 5678cd1a677cSIlya Dryomov struct ceph_osd *o = con->private; 5679cd1a677cSIlya Dryomov struct ceph_auth_client *ac = o->o_osdc->client->monc.auth; 5680cd1a677cSIlya Dryomov struct ceph_auth_handshake *auth = &o->o_auth; 5681cd1a677cSIlya Dryomov 5682cd1a677cSIlya Dryomov return ceph_auth_handle_svc_reply_done(ac, auth, reply, reply_len, 5683cd1a677cSIlya Dryomov session_key, session_key_len, 5684cd1a677cSIlya Dryomov con_secret, con_secret_len); 5685cd1a677cSIlya Dryomov } 5686cd1a677cSIlya Dryomov 5687cd1a677cSIlya Dryomov static int osd_handle_auth_bad_method(struct ceph_connection *con, 5688cd1a677cSIlya Dryomov int used_proto, int result, 5689cd1a677cSIlya Dryomov const int *allowed_protos, int proto_cnt, 5690cd1a677cSIlya Dryomov const int *allowed_modes, int mode_cnt) 5691cd1a677cSIlya Dryomov { 5692cd1a677cSIlya Dryomov struct ceph_osd *o = con->private; 5693cd1a677cSIlya Dryomov struct ceph_mon_client *monc = &o->o_osdc->client->monc; 5694cd1a677cSIlya Dryomov int ret; 5695cd1a677cSIlya Dryomov 5696cd1a677cSIlya Dryomov if (ceph_auth_handle_bad_authorizer(monc->auth, CEPH_ENTITY_TYPE_OSD, 5697cd1a677cSIlya Dryomov used_proto, result, 5698cd1a677cSIlya Dryomov allowed_protos, proto_cnt, 5699cd1a677cSIlya Dryomov allowed_modes, mode_cnt)) { 5700cd1a677cSIlya Dryomov ret = ceph_monc_validate_auth(monc); 5701cd1a677cSIlya Dryomov if (ret) 5702cd1a677cSIlya Dryomov return ret; 5703cd1a677cSIlya Dryomov } 5704cd1a677cSIlya Dryomov 5705cd1a677cSIlya Dryomov return -EACCES; 5706cd1a677cSIlya Dryomov } 5707cd1a677cSIlya Dryomov 57088cb441c0SIlya Dryomov static void osd_reencode_message(struct ceph_msg *msg) 57098cb441c0SIlya Dryomov { 5710914902afSIlya Dryomov int type = le16_to_cpu(msg->hdr.type); 5711914902afSIlya Dryomov 5712914902afSIlya Dryomov if (type == CEPH_MSG_OSD_OP) 57138cb441c0SIlya Dryomov encode_request_finish(msg); 57148cb441c0SIlya Dryomov } 57158cb441c0SIlya Dryomov 571679dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 571733d07337SYan, Zheng { 571879dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 571933d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 572079dbd1baSIlya Dryomov 572133d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 572233d07337SYan, Zheng } 572333d07337SYan, Zheng 572479dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 572533d07337SYan, Zheng { 572679dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 572733d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 572879dbd1baSIlya Dryomov 572933d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 573033d07337SYan, Zheng } 573133d07337SYan, Zheng 5732f628d799SJeff Layton static void advance_cursor(struct ceph_msg_data_cursor *cursor, size_t len, 5733f628d799SJeff Layton bool zero) 5734f628d799SJeff Layton { 5735f628d799SJeff Layton while (len) { 5736f628d799SJeff Layton struct page *page; 5737f628d799SJeff Layton size_t poff, plen; 5738f628d799SJeff Layton 5739f628d799SJeff Layton page = ceph_msg_data_next(cursor, &poff, &plen); 5740f628d799SJeff Layton if (plen > len) 5741f628d799SJeff Layton plen = len; 5742f628d799SJeff Layton if (zero) 5743f628d799SJeff Layton zero_user_segment(page, poff, poff + plen); 5744f628d799SJeff Layton len -= plen; 5745f628d799SJeff Layton ceph_msg_data_advance(cursor, plen); 5746f628d799SJeff Layton } 5747f628d799SJeff Layton } 5748f628d799SJeff Layton 5749f628d799SJeff Layton static int prep_next_sparse_read(struct ceph_connection *con, 5750f628d799SJeff Layton struct ceph_msg_data_cursor *cursor) 5751f628d799SJeff Layton { 5752f628d799SJeff Layton struct ceph_osd *o = con->private; 5753f628d799SJeff Layton struct ceph_sparse_read *sr = &o->o_sparse_read; 5754f628d799SJeff Layton struct ceph_osd_request *req; 5755f628d799SJeff Layton struct ceph_osd_req_op *op; 5756f628d799SJeff Layton 5757f628d799SJeff Layton spin_lock(&o->o_requests_lock); 5758f628d799SJeff Layton req = lookup_request(&o->o_requests, le64_to_cpu(con->in_msg->hdr.tid)); 5759f628d799SJeff Layton if (!req) { 5760f628d799SJeff Layton spin_unlock(&o->o_requests_lock); 5761f628d799SJeff Layton return -EBADR; 5762f628d799SJeff Layton } 5763f628d799SJeff Layton 5764f628d799SJeff Layton if (o->o_sparse_op_idx < 0) { 5765f628d799SJeff Layton u64 srlen = sparse_data_requested(req); 5766f628d799SJeff Layton 5767f628d799SJeff Layton dout("%s: [%d] starting new sparse read req. srlen=0x%llx\n", 5768f628d799SJeff Layton __func__, o->o_osd, srlen); 5769f628d799SJeff Layton ceph_msg_data_cursor_init(cursor, con->in_msg, srlen); 5770f628d799SJeff Layton } else { 5771f628d799SJeff Layton u64 end; 5772f628d799SJeff Layton 5773f628d799SJeff Layton op = &req->r_ops[o->o_sparse_op_idx]; 5774f628d799SJeff Layton 5775f628d799SJeff Layton WARN_ON_ONCE(op->extent.sparse_ext); 5776f628d799SJeff Layton 5777f628d799SJeff Layton /* hand back buffer we took earlier */ 5778f628d799SJeff Layton op->extent.sparse_ext = sr->sr_extent; 5779f628d799SJeff Layton sr->sr_extent = NULL; 5780f628d799SJeff Layton op->extent.sparse_ext_cnt = sr->sr_count; 5781f628d799SJeff Layton sr->sr_ext_len = 0; 5782f628d799SJeff Layton dout("%s: [%d] completed extent array len %d cursor->resid %zd\n", 5783f628d799SJeff Layton __func__, o->o_osd, op->extent.sparse_ext_cnt, cursor->resid); 5784f628d799SJeff Layton /* Advance to end of data for this operation */ 5785f628d799SJeff Layton end = ceph_sparse_ext_map_end(op); 5786f628d799SJeff Layton if (end < sr->sr_req_len) 5787f628d799SJeff Layton advance_cursor(cursor, sr->sr_req_len - end, false); 5788f628d799SJeff Layton } 5789f628d799SJeff Layton 5790f628d799SJeff Layton ceph_init_sparse_read(sr); 5791f628d799SJeff Layton 5792f628d799SJeff Layton /* find next op in this request (if any) */ 5793f628d799SJeff Layton while (++o->o_sparse_op_idx < req->r_num_ops) { 5794f628d799SJeff Layton op = &req->r_ops[o->o_sparse_op_idx]; 5795f628d799SJeff Layton if (op->op == CEPH_OSD_OP_SPARSE_READ) 5796f628d799SJeff Layton goto found; 5797f628d799SJeff Layton } 5798f628d799SJeff Layton 5799f628d799SJeff Layton /* reset for next sparse read request */ 5800f628d799SJeff Layton spin_unlock(&o->o_requests_lock); 5801f628d799SJeff Layton o->o_sparse_op_idx = -1; 5802f628d799SJeff Layton return 0; 5803f628d799SJeff Layton found: 5804f628d799SJeff Layton sr->sr_req_off = op->extent.offset; 5805f628d799SJeff Layton sr->sr_req_len = op->extent.length; 5806f628d799SJeff Layton sr->sr_pos = sr->sr_req_off; 5807f628d799SJeff Layton dout("%s: [%d] new sparse read op at idx %d 0x%llx~0x%llx\n", __func__, 5808f628d799SJeff Layton o->o_osd, o->o_sparse_op_idx, sr->sr_req_off, sr->sr_req_len); 5809f628d799SJeff Layton 5810f628d799SJeff Layton /* hand off request's sparse extent map buffer */ 5811f628d799SJeff Layton sr->sr_ext_len = op->extent.sparse_ext_cnt; 5812f628d799SJeff Layton op->extent.sparse_ext_cnt = 0; 5813f628d799SJeff Layton sr->sr_extent = op->extent.sparse_ext; 5814f628d799SJeff Layton op->extent.sparse_ext = NULL; 5815f628d799SJeff Layton 5816f628d799SJeff Layton spin_unlock(&o->o_requests_lock); 5817f628d799SJeff Layton return 1; 5818f628d799SJeff Layton } 5819f628d799SJeff Layton 5820f628d799SJeff Layton #ifdef __BIG_ENDIAN 5821f628d799SJeff Layton static inline void convert_extent_map(struct ceph_sparse_read *sr) 5822f628d799SJeff Layton { 5823f628d799SJeff Layton int i; 5824f628d799SJeff Layton 5825f628d799SJeff Layton for (i = 0; i < sr->sr_count; i++) { 5826f628d799SJeff Layton struct ceph_sparse_extent *ext = &sr->sr_extent[i]; 5827f628d799SJeff Layton 5828f628d799SJeff Layton ext->off = le64_to_cpu((__force __le64)ext->off); 5829f628d799SJeff Layton ext->len = le64_to_cpu((__force __le64)ext->len); 5830f628d799SJeff Layton } 5831f628d799SJeff Layton } 5832f628d799SJeff Layton #else 5833f628d799SJeff Layton static inline void convert_extent_map(struct ceph_sparse_read *sr) 5834f628d799SJeff Layton { 5835f628d799SJeff Layton } 5836f628d799SJeff Layton #endif 5837f628d799SJeff Layton 5838f628d799SJeff Layton #define MAX_EXTENTS 4096 5839f628d799SJeff Layton 5840f628d799SJeff Layton static int osd_sparse_read(struct ceph_connection *con, 5841f628d799SJeff Layton struct ceph_msg_data_cursor *cursor, 5842f628d799SJeff Layton char **pbuf) 5843f628d799SJeff Layton { 5844f628d799SJeff Layton struct ceph_osd *o = con->private; 5845f628d799SJeff Layton struct ceph_sparse_read *sr = &o->o_sparse_read; 5846f628d799SJeff Layton u32 count = sr->sr_count; 5847f628d799SJeff Layton u64 eoff, elen; 5848f628d799SJeff Layton int ret; 5849f628d799SJeff Layton 5850f628d799SJeff Layton switch (sr->sr_state) { 5851f628d799SJeff Layton case CEPH_SPARSE_READ_HDR: 5852f628d799SJeff Layton next_op: 5853f628d799SJeff Layton ret = prep_next_sparse_read(con, cursor); 5854f628d799SJeff Layton if (ret <= 0) 5855f628d799SJeff Layton return ret; 5856f628d799SJeff Layton 5857f628d799SJeff Layton /* number of extents */ 5858f628d799SJeff Layton ret = sizeof(sr->sr_count); 5859f628d799SJeff Layton *pbuf = (char *)&sr->sr_count; 5860f628d799SJeff Layton sr->sr_state = CEPH_SPARSE_READ_EXTENTS; 5861f628d799SJeff Layton break; 5862f628d799SJeff Layton case CEPH_SPARSE_READ_EXTENTS: 5863f628d799SJeff Layton /* Convert sr_count to host-endian */ 5864f628d799SJeff Layton count = le32_to_cpu((__force __le32)sr->sr_count); 5865f628d799SJeff Layton sr->sr_count = count; 5866f628d799SJeff Layton dout("[%d] got %u extents\n", o->o_osd, count); 5867f628d799SJeff Layton 5868f628d799SJeff Layton if (count > 0) { 5869f628d799SJeff Layton if (!sr->sr_extent || count > sr->sr_ext_len) { 5870f628d799SJeff Layton /* 5871f628d799SJeff Layton * Apply a hard cap to the number of extents. 5872f628d799SJeff Layton * If we have more, assume something is wrong. 5873f628d799SJeff Layton */ 5874f628d799SJeff Layton if (count > MAX_EXTENTS) { 5875f628d799SJeff Layton dout("%s: OSD returned 0x%x extents in a single reply!\n", 5876f628d799SJeff Layton __func__, count); 5877f628d799SJeff Layton return -EREMOTEIO; 5878f628d799SJeff Layton } 5879f628d799SJeff Layton 5880f628d799SJeff Layton /* no extent array provided, or too short */ 5881f628d799SJeff Layton kfree(sr->sr_extent); 5882f628d799SJeff Layton sr->sr_extent = kmalloc_array(count, 5883f628d799SJeff Layton sizeof(*sr->sr_extent), 5884f628d799SJeff Layton GFP_NOIO); 5885f628d799SJeff Layton if (!sr->sr_extent) 5886f628d799SJeff Layton return -ENOMEM; 5887f628d799SJeff Layton sr->sr_ext_len = count; 5888f628d799SJeff Layton } 5889f628d799SJeff Layton ret = count * sizeof(*sr->sr_extent); 5890f628d799SJeff Layton *pbuf = (char *)sr->sr_extent; 5891f628d799SJeff Layton sr->sr_state = CEPH_SPARSE_READ_DATA_LEN; 5892f628d799SJeff Layton break; 5893f628d799SJeff Layton } 5894f628d799SJeff Layton /* No extents? Read data len */ 5895f628d799SJeff Layton fallthrough; 5896f628d799SJeff Layton case CEPH_SPARSE_READ_DATA_LEN: 5897f628d799SJeff Layton convert_extent_map(sr); 5898f628d799SJeff Layton ret = sizeof(sr->sr_datalen); 5899f628d799SJeff Layton *pbuf = (char *)&sr->sr_datalen; 5900f628d799SJeff Layton sr->sr_state = CEPH_SPARSE_READ_DATA; 5901f628d799SJeff Layton break; 5902f628d799SJeff Layton case CEPH_SPARSE_READ_DATA: 5903f628d799SJeff Layton if (sr->sr_index >= count) { 5904f628d799SJeff Layton sr->sr_state = CEPH_SPARSE_READ_HDR; 5905f628d799SJeff Layton goto next_op; 5906f628d799SJeff Layton } 5907f628d799SJeff Layton 5908f628d799SJeff Layton eoff = sr->sr_extent[sr->sr_index].off; 5909f628d799SJeff Layton elen = sr->sr_extent[sr->sr_index].len; 5910f628d799SJeff Layton 5911f628d799SJeff Layton dout("[%d] ext %d off 0x%llx len 0x%llx\n", 5912f628d799SJeff Layton o->o_osd, sr->sr_index, eoff, elen); 5913f628d799SJeff Layton 5914f628d799SJeff Layton if (elen > INT_MAX) { 5915f628d799SJeff Layton dout("Sparse read extent length too long (0x%llx)\n", 5916f628d799SJeff Layton elen); 5917f628d799SJeff Layton return -EREMOTEIO; 5918f628d799SJeff Layton } 5919f628d799SJeff Layton 5920f628d799SJeff Layton /* zero out anything from sr_pos to start of extent */ 5921f628d799SJeff Layton if (sr->sr_pos < eoff) 5922f628d799SJeff Layton advance_cursor(cursor, eoff - sr->sr_pos, true); 5923f628d799SJeff Layton 5924f628d799SJeff Layton /* Set position to end of extent */ 5925f628d799SJeff Layton sr->sr_pos = eoff + elen; 5926f628d799SJeff Layton 5927f628d799SJeff Layton /* send back the new length and nullify the ptr */ 5928f628d799SJeff Layton cursor->sr_resid = elen; 5929f628d799SJeff Layton ret = elen; 5930f628d799SJeff Layton *pbuf = NULL; 5931f628d799SJeff Layton 5932f628d799SJeff Layton /* Bump the array index */ 5933f628d799SJeff Layton ++sr->sr_index; 5934f628d799SJeff Layton break; 5935f628d799SJeff Layton } 5936f628d799SJeff Layton return ret; 5937f628d799SJeff Layton } 5938f628d799SJeff Layton 59393d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 59404972cf60SIlya Dryomov .get = osd_get_con, 59414972cf60SIlya Dryomov .put = osd_put_con, 5942f628d799SJeff Layton .sparse_read = osd_sparse_read, 59434972cf60SIlya Dryomov .alloc_msg = osd_alloc_msg, 59444972cf60SIlya Dryomov .dispatch = osd_dispatch, 59454972cf60SIlya Dryomov .fault = osd_fault, 59468cb441c0SIlya Dryomov .reencode_message = osd_reencode_message, 59474972cf60SIlya Dryomov .get_authorizer = osd_get_authorizer, 59484972cf60SIlya Dryomov .add_authorizer_challenge = osd_add_authorizer_challenge, 59494972cf60SIlya Dryomov .verify_authorizer_reply = osd_verify_authorizer_reply, 59504972cf60SIlya Dryomov .invalidate_authorizer = osd_invalidate_authorizer, 595179dbd1baSIlya Dryomov .sign_message = osd_sign_message, 595279dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 5953cd1a677cSIlya Dryomov .get_auth_request = osd_get_auth_request, 5954cd1a677cSIlya Dryomov .handle_auth_reply_more = osd_handle_auth_reply_more, 5955cd1a677cSIlya Dryomov .handle_auth_done = osd_handle_auth_done, 5956cd1a677cSIlya Dryomov .handle_auth_bad_method = osd_handle_auth_bad_method, 59573d14c5d2SYehuda Sadeh }; 5958