1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 2a4ce40a9SAlex Elder 33d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 43d14c5d2SYehuda Sadeh 53d14c5d2SYehuda Sadeh #include <linux/module.h> 63d14c5d2SYehuda Sadeh #include <linux/err.h> 73d14c5d2SYehuda Sadeh #include <linux/highmem.h> 83d14c5d2SYehuda Sadeh #include <linux/mm.h> 93d14c5d2SYehuda Sadeh #include <linux/pagemap.h> 103d14c5d2SYehuda Sadeh #include <linux/slab.h> 113d14c5d2SYehuda Sadeh #include <linux/uaccess.h> 123d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 133d14c5d2SYehuda Sadeh #include <linux/bio.h> 143d14c5d2SYehuda Sadeh #endif 153d14c5d2SYehuda Sadeh 168cb441c0SIlya Dryomov #include <linux/ceph/ceph_features.h> 173d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 183d14c5d2SYehuda Sadeh #include <linux/ceph/osd_client.h> 193d14c5d2SYehuda Sadeh #include <linux/ceph/messenger.h> 203d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 213d14c5d2SYehuda Sadeh #include <linux/ceph/auth.h> 223d14c5d2SYehuda Sadeh #include <linux/ceph/pagelist.h> 2308c1ac50SIlya Dryomov #include <linux/ceph/striper.h> 243d14c5d2SYehuda Sadeh 253d14c5d2SYehuda Sadeh #define OSD_OPREPLY_FRONT_LEN 512 263d14c5d2SYehuda Sadeh 275522ae0bSAlex Elder static struct kmem_cache *ceph_osd_request_cache; 285522ae0bSAlex Elder 293d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops; 303d14c5d2SYehuda Sadeh 313d14c5d2SYehuda Sadeh /* 323d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 333d14c5d2SYehuda Sadeh * 343d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 353d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 363d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 373d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 383d14c5d2SYehuda Sadeh * access to storage. 393d14c5d2SYehuda Sadeh * 403d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 413d14c5d2SYehuda Sadeh * are described by the osd map. 423d14c5d2SYehuda Sadeh * 433d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 443d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 453d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 463d14c5d2SYehuda Sadeh * channel with an OSD is reset. 473d14c5d2SYehuda Sadeh */ 483d14c5d2SYehuda Sadeh 495aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req); 505aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req); 51922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 52922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq); 53922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 54922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq); 55a02a946dSIlya Dryomov static void clear_backoffs(struct ceph_osd *osd); 565aea3dcdSIlya Dryomov 575aea3dcdSIlya Dryomov #if 1 585aea3dcdSIlya Dryomov static inline bool rwsem_is_wrlocked(struct rw_semaphore *sem) 595aea3dcdSIlya Dryomov { 605aea3dcdSIlya Dryomov bool wrlocked = true; 615aea3dcdSIlya Dryomov 625aea3dcdSIlya Dryomov if (unlikely(down_read_trylock(sem))) { 635aea3dcdSIlya Dryomov wrlocked = false; 645aea3dcdSIlya Dryomov up_read(sem); 655aea3dcdSIlya Dryomov } 665aea3dcdSIlya Dryomov 675aea3dcdSIlya Dryomov return wrlocked; 685aea3dcdSIlya Dryomov } 695aea3dcdSIlya Dryomov static inline void verify_osdc_locked(struct ceph_osd_client *osdc) 705aea3dcdSIlya Dryomov { 715aea3dcdSIlya Dryomov WARN_ON(!rwsem_is_locked(&osdc->lock)); 725aea3dcdSIlya Dryomov } 735aea3dcdSIlya Dryomov static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) 745aea3dcdSIlya Dryomov { 755aea3dcdSIlya Dryomov WARN_ON(!rwsem_is_wrlocked(&osdc->lock)); 765aea3dcdSIlya Dryomov } 775aea3dcdSIlya Dryomov static inline void verify_osd_locked(struct ceph_osd *osd) 785aea3dcdSIlya Dryomov { 795aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 805aea3dcdSIlya Dryomov 815aea3dcdSIlya Dryomov WARN_ON(!(mutex_is_locked(&osd->lock) && 825aea3dcdSIlya Dryomov rwsem_is_locked(&osdc->lock)) && 835aea3dcdSIlya Dryomov !rwsem_is_wrlocked(&osdc->lock)); 845aea3dcdSIlya Dryomov } 85922dab61SIlya Dryomov static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) 86922dab61SIlya Dryomov { 87922dab61SIlya Dryomov WARN_ON(!mutex_is_locked(&lreq->lock)); 88922dab61SIlya Dryomov } 895aea3dcdSIlya Dryomov #else 905aea3dcdSIlya Dryomov static inline void verify_osdc_locked(struct ceph_osd_client *osdc) { } 915aea3dcdSIlya Dryomov static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) { } 925aea3dcdSIlya Dryomov static inline void verify_osd_locked(struct ceph_osd *osd) { } 93922dab61SIlya Dryomov static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) { } 945aea3dcdSIlya Dryomov #endif 955aea3dcdSIlya Dryomov 963d14c5d2SYehuda Sadeh /* 973d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 983d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 993d14c5d2SYehuda Sadeh * object boundary. 1003d14c5d2SYehuda Sadeh * 1013d14c5d2SYehuda Sadeh * fill osd op in request message. 1023d14c5d2SYehuda Sadeh */ 103dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 104a19dadfbSAlex Elder u64 *objnum, u64 *objoff, u64 *objlen) 1053d14c5d2SYehuda Sadeh { 10660e56f13SAlex Elder u64 orig_len = *plen; 107dccbf080SIlya Dryomov u32 xlen; 1083d14c5d2SYehuda Sadeh 10960e56f13SAlex Elder /* object extent? */ 110dccbf080SIlya Dryomov ceph_calc_file_object_mapping(layout, off, orig_len, objnum, 111dccbf080SIlya Dryomov objoff, &xlen); 112dccbf080SIlya Dryomov *objlen = xlen; 11375d1c941SAlex Elder if (*objlen < orig_len) { 11475d1c941SAlex Elder *plen = *objlen; 11560e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 11660e56f13SAlex Elder orig_len - *plen, off, *plen); 11760e56f13SAlex Elder } 11860e56f13SAlex Elder 11975d1c941SAlex Elder dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); 1203ff5f385SAlex Elder return 0; 1213d14c5d2SYehuda Sadeh } 1223d14c5d2SYehuda Sadeh 123c54d47bfSAlex Elder static void ceph_osd_data_init(struct ceph_osd_data *osd_data) 124c54d47bfSAlex Elder { 125c54d47bfSAlex Elder memset(osd_data, 0, sizeof (*osd_data)); 126c54d47bfSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_NONE; 127c54d47bfSAlex Elder } 128c54d47bfSAlex Elder 129a4ce40a9SAlex Elder static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, 13043bfe5deSAlex Elder struct page **pages, u64 length, u32 alignment, 13143bfe5deSAlex Elder bool pages_from_pool, bool own_pages) 13243bfe5deSAlex Elder { 13343bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 13443bfe5deSAlex Elder osd_data->pages = pages; 13543bfe5deSAlex Elder osd_data->length = length; 13643bfe5deSAlex Elder osd_data->alignment = alignment; 13743bfe5deSAlex Elder osd_data->pages_from_pool = pages_from_pool; 13843bfe5deSAlex Elder osd_data->own_pages = own_pages; 13943bfe5deSAlex Elder } 14043bfe5deSAlex Elder 141a4ce40a9SAlex Elder static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, 14243bfe5deSAlex Elder struct ceph_pagelist *pagelist) 14343bfe5deSAlex Elder { 14443bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; 14543bfe5deSAlex Elder osd_data->pagelist = pagelist; 14643bfe5deSAlex Elder } 14743bfe5deSAlex Elder 14843bfe5deSAlex Elder #ifdef CONFIG_BLOCK 149a4ce40a9SAlex Elder static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 1505359a17dSIlya Dryomov struct ceph_bio_iter *bio_pos, 1515359a17dSIlya Dryomov u32 bio_length) 15243bfe5deSAlex Elder { 15343bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_BIO; 1545359a17dSIlya Dryomov osd_data->bio_pos = *bio_pos; 15543bfe5deSAlex Elder osd_data->bio_length = bio_length; 15643bfe5deSAlex Elder } 15743bfe5deSAlex Elder #endif /* CONFIG_BLOCK */ 15843bfe5deSAlex Elder 159b9e281c2SIlya Dryomov static void ceph_osd_data_bvecs_init(struct ceph_osd_data *osd_data, 160b9e281c2SIlya Dryomov struct ceph_bvec_iter *bvec_pos) 161b9e281c2SIlya Dryomov { 162b9e281c2SIlya Dryomov osd_data->type = CEPH_OSD_DATA_TYPE_BVECS; 163b9e281c2SIlya Dryomov osd_data->bvec_pos = *bvec_pos; 164b9e281c2SIlya Dryomov } 165b9e281c2SIlya Dryomov 166863c7eb5SAlex Elder #define osd_req_op_data(oreq, whch, typ, fld) \ 167863c7eb5SAlex Elder ({ \ 1688a703a38SIoana Ciornei struct ceph_osd_request *__oreq = (oreq); \ 1698a703a38SIoana Ciornei unsigned int __whch = (whch); \ 1708a703a38SIoana Ciornei BUG_ON(__whch >= __oreq->r_num_ops); \ 1718a703a38SIoana Ciornei &__oreq->r_ops[__whch].typ.fld; \ 172863c7eb5SAlex Elder }) 173863c7eb5SAlex Elder 17449719778SAlex Elder static struct ceph_osd_data * 17549719778SAlex Elder osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) 17649719778SAlex Elder { 17749719778SAlex Elder BUG_ON(which >= osd_req->r_num_ops); 17849719778SAlex Elder 17949719778SAlex Elder return &osd_req->r_ops[which].raw_data_in; 18049719778SAlex Elder } 18149719778SAlex Elder 182a4ce40a9SAlex Elder struct ceph_osd_data * 183a4ce40a9SAlex Elder osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, 184406e2c9fSAlex Elder unsigned int which) 185a4ce40a9SAlex Elder { 186863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, extent, osd_data); 187a4ce40a9SAlex Elder } 188a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data); 189a4ce40a9SAlex Elder 19049719778SAlex Elder void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 19149719778SAlex Elder unsigned int which, struct page **pages, 19249719778SAlex Elder u64 length, u32 alignment, 19349719778SAlex Elder bool pages_from_pool, bool own_pages) 19449719778SAlex Elder { 19549719778SAlex Elder struct ceph_osd_data *osd_data; 19649719778SAlex Elder 19749719778SAlex Elder osd_data = osd_req_op_raw_data_in(osd_req, which); 19849719778SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 19949719778SAlex Elder pages_from_pool, own_pages); 20049719778SAlex Elder } 20149719778SAlex Elder EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 20249719778SAlex Elder 203a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 204406e2c9fSAlex Elder unsigned int which, struct page **pages, 205406e2c9fSAlex Elder u64 length, u32 alignment, 206a4ce40a9SAlex Elder bool pages_from_pool, bool own_pages) 207a4ce40a9SAlex Elder { 208a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 209a4ce40a9SAlex Elder 210863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 211a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 212a4ce40a9SAlex Elder pages_from_pool, own_pages); 213a4ce40a9SAlex Elder } 214a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 215a4ce40a9SAlex Elder 216a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 217406e2c9fSAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 218a4ce40a9SAlex Elder { 219a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 220a4ce40a9SAlex Elder 221863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 222a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 223a4ce40a9SAlex Elder } 224a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 225a4ce40a9SAlex Elder 226a4ce40a9SAlex Elder #ifdef CONFIG_BLOCK 227a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 2285359a17dSIlya Dryomov unsigned int which, 2295359a17dSIlya Dryomov struct ceph_bio_iter *bio_pos, 2305359a17dSIlya Dryomov u32 bio_length) 231a4ce40a9SAlex Elder { 232a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 233863c7eb5SAlex Elder 234863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2355359a17dSIlya Dryomov ceph_osd_data_bio_init(osd_data, bio_pos, bio_length); 236a4ce40a9SAlex Elder } 237a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 238a4ce40a9SAlex Elder #endif /* CONFIG_BLOCK */ 239a4ce40a9SAlex Elder 240b9e281c2SIlya Dryomov void osd_req_op_extent_osd_data_bvec_pos(struct ceph_osd_request *osd_req, 241b9e281c2SIlya Dryomov unsigned int which, 242b9e281c2SIlya Dryomov struct ceph_bvec_iter *bvec_pos) 243b9e281c2SIlya Dryomov { 244b9e281c2SIlya Dryomov struct ceph_osd_data *osd_data; 245b9e281c2SIlya Dryomov 246b9e281c2SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 247b9e281c2SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, bvec_pos); 248b9e281c2SIlya Dryomov } 249b9e281c2SIlya Dryomov EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvec_pos); 250b9e281c2SIlya Dryomov 251a4ce40a9SAlex Elder static void osd_req_op_cls_request_info_pagelist( 252a4ce40a9SAlex Elder struct ceph_osd_request *osd_req, 253a4ce40a9SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 254a4ce40a9SAlex Elder { 255a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 256a4ce40a9SAlex Elder 257863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_info); 258a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 259a4ce40a9SAlex Elder } 260a4ce40a9SAlex Elder 26104017e29SAlex Elder void osd_req_op_cls_request_data_pagelist( 26204017e29SAlex Elder struct ceph_osd_request *osd_req, 26304017e29SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 26404017e29SAlex Elder { 26504017e29SAlex Elder struct ceph_osd_data *osd_data; 26604017e29SAlex Elder 267863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 26804017e29SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 269bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += pagelist->length; 270bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += pagelist->length; 27104017e29SAlex Elder } 27204017e29SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 27304017e29SAlex Elder 2746c57b554SAlex Elder void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 2756c57b554SAlex Elder unsigned int which, struct page **pages, u64 length, 2766c57b554SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 2776c57b554SAlex Elder { 2786c57b554SAlex Elder struct ceph_osd_data *osd_data; 2796c57b554SAlex Elder 2806c57b554SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 2816c57b554SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 2826c57b554SAlex Elder pages_from_pool, own_pages); 283bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += length; 284bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += length; 2856c57b554SAlex Elder } 2866c57b554SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 2876c57b554SAlex Elder 288b9e281c2SIlya Dryomov void osd_req_op_cls_request_data_bvecs(struct ceph_osd_request *osd_req, 289b9e281c2SIlya Dryomov unsigned int which, 290b9e281c2SIlya Dryomov struct bio_vec *bvecs, u32 bytes) 291b9e281c2SIlya Dryomov { 292b9e281c2SIlya Dryomov struct ceph_osd_data *osd_data; 293b9e281c2SIlya Dryomov struct ceph_bvec_iter it = { 294b9e281c2SIlya Dryomov .bvecs = bvecs, 295b9e281c2SIlya Dryomov .iter = { .bi_size = bytes }, 296b9e281c2SIlya Dryomov }; 297b9e281c2SIlya Dryomov 298b9e281c2SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, cls, request_data); 299b9e281c2SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, &it); 300b9e281c2SIlya Dryomov osd_req->r_ops[which].cls.indata_len += bytes; 301b9e281c2SIlya Dryomov osd_req->r_ops[which].indata_len += bytes; 302b9e281c2SIlya Dryomov } 303b9e281c2SIlya Dryomov EXPORT_SYMBOL(osd_req_op_cls_request_data_bvecs); 304b9e281c2SIlya Dryomov 305a4ce40a9SAlex Elder void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 306a4ce40a9SAlex Elder unsigned int which, struct page **pages, u64 length, 307a4ce40a9SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 308a4ce40a9SAlex Elder { 309a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 310a4ce40a9SAlex Elder 311863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, response_data); 312a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 313a4ce40a9SAlex Elder pages_from_pool, own_pages); 314a4ce40a9SAlex Elder } 315a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 316a4ce40a9SAlex Elder 31723c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 31823c08a9cSAlex Elder { 31923c08a9cSAlex Elder switch (osd_data->type) { 32023c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 32123c08a9cSAlex Elder return 0; 32223c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 32323c08a9cSAlex Elder return osd_data->length; 32423c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 32523c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 32623c08a9cSAlex Elder #ifdef CONFIG_BLOCK 32723c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 32823c08a9cSAlex Elder return (u64)osd_data->bio_length; 32923c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 330b9e281c2SIlya Dryomov case CEPH_OSD_DATA_TYPE_BVECS: 331b9e281c2SIlya Dryomov return osd_data->bvec_pos.iter.bi_size; 33223c08a9cSAlex Elder default: 33323c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 33423c08a9cSAlex Elder return 0; 33523c08a9cSAlex Elder } 33623c08a9cSAlex Elder } 33723c08a9cSAlex Elder 338c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 339c54d47bfSAlex Elder { 3405476492fSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 341c54d47bfSAlex Elder int num_pages; 342c54d47bfSAlex Elder 343c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 344c54d47bfSAlex Elder (u64)osd_data->length); 345c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 346c54d47bfSAlex Elder } 3475476492fSAlex Elder ceph_osd_data_init(osd_data); 3485476492fSAlex Elder } 3495476492fSAlex Elder 3505476492fSAlex Elder static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 3515476492fSAlex Elder unsigned int which) 3525476492fSAlex Elder { 3535476492fSAlex Elder struct ceph_osd_req_op *op; 3545476492fSAlex Elder 3555476492fSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 3565476492fSAlex Elder op = &osd_req->r_ops[which]; 3575476492fSAlex Elder 3585476492fSAlex Elder switch (op->op) { 3595476492fSAlex Elder case CEPH_OSD_OP_READ: 3605476492fSAlex Elder case CEPH_OSD_OP_WRITE: 361e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 3625476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 3635476492fSAlex Elder break; 3645476492fSAlex Elder case CEPH_OSD_OP_CALL: 3655476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 36604017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 3675476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 3685476492fSAlex Elder break; 369d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 370d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 371d74b50beSYan, Zheng ceph_osd_data_release(&op->xattr.osd_data); 372d74b50beSYan, Zheng break; 37366ba609fSYan, Zheng case CEPH_OSD_OP_STAT: 37466ba609fSYan, Zheng ceph_osd_data_release(&op->raw_data_in); 37566ba609fSYan, Zheng break; 376922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 377922dab61SIlya Dryomov ceph_osd_data_release(&op->notify_ack.request_data); 378922dab61SIlya Dryomov break; 37919079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 38019079203SIlya Dryomov ceph_osd_data_release(&op->notify.request_data); 38119079203SIlya Dryomov ceph_osd_data_release(&op->notify.response_data); 38219079203SIlya Dryomov break; 383a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 384a4ed38d7SDouglas Fuller ceph_osd_data_release(&op->list_watchers.response_data); 385a4ed38d7SDouglas Fuller break; 3865476492fSAlex Elder default: 3875476492fSAlex Elder break; 3885476492fSAlex Elder } 389c54d47bfSAlex Elder } 390c54d47bfSAlex Elder 3913d14c5d2SYehuda Sadeh /* 39263244fa1SIlya Dryomov * Assumes @t is zero-initialized. 39363244fa1SIlya Dryomov */ 39463244fa1SIlya Dryomov static void target_init(struct ceph_osd_request_target *t) 39563244fa1SIlya Dryomov { 39663244fa1SIlya Dryomov ceph_oid_init(&t->base_oid); 39763244fa1SIlya Dryomov ceph_oloc_init(&t->base_oloc); 39863244fa1SIlya Dryomov ceph_oid_init(&t->target_oid); 39963244fa1SIlya Dryomov ceph_oloc_init(&t->target_oloc); 40063244fa1SIlya Dryomov 40163244fa1SIlya Dryomov ceph_osds_init(&t->acting); 40263244fa1SIlya Dryomov ceph_osds_init(&t->up); 40363244fa1SIlya Dryomov t->size = -1; 40463244fa1SIlya Dryomov t->min_size = -1; 40563244fa1SIlya Dryomov 40663244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 40763244fa1SIlya Dryomov } 40863244fa1SIlya Dryomov 409922dab61SIlya Dryomov static void target_copy(struct ceph_osd_request_target *dest, 410922dab61SIlya Dryomov const struct ceph_osd_request_target *src) 411922dab61SIlya Dryomov { 412922dab61SIlya Dryomov ceph_oid_copy(&dest->base_oid, &src->base_oid); 413922dab61SIlya Dryomov ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); 414922dab61SIlya Dryomov ceph_oid_copy(&dest->target_oid, &src->target_oid); 415922dab61SIlya Dryomov ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); 416922dab61SIlya Dryomov 417922dab61SIlya Dryomov dest->pgid = src->pgid; /* struct */ 418dc98ff72SIlya Dryomov dest->spgid = src->spgid; /* struct */ 419922dab61SIlya Dryomov dest->pg_num = src->pg_num; 420922dab61SIlya Dryomov dest->pg_num_mask = src->pg_num_mask; 421922dab61SIlya Dryomov ceph_osds_copy(&dest->acting, &src->acting); 422922dab61SIlya Dryomov ceph_osds_copy(&dest->up, &src->up); 423922dab61SIlya Dryomov dest->size = src->size; 424922dab61SIlya Dryomov dest->min_size = src->min_size; 425922dab61SIlya Dryomov dest->sort_bitwise = src->sort_bitwise; 426922dab61SIlya Dryomov 427922dab61SIlya Dryomov dest->flags = src->flags; 428922dab61SIlya Dryomov dest->paused = src->paused; 429922dab61SIlya Dryomov 43004c7d789SIlya Dryomov dest->epoch = src->epoch; 431dc93e0e2SIlya Dryomov dest->last_force_resend = src->last_force_resend; 432dc93e0e2SIlya Dryomov 433922dab61SIlya Dryomov dest->osd = src->osd; 434922dab61SIlya Dryomov } 435922dab61SIlya Dryomov 43663244fa1SIlya Dryomov static void target_destroy(struct ceph_osd_request_target *t) 43763244fa1SIlya Dryomov { 43863244fa1SIlya Dryomov ceph_oid_destroy(&t->base_oid); 43930c156d9SYan, Zheng ceph_oloc_destroy(&t->base_oloc); 44063244fa1SIlya Dryomov ceph_oid_destroy(&t->target_oid); 44130c156d9SYan, Zheng ceph_oloc_destroy(&t->target_oloc); 44263244fa1SIlya Dryomov } 44363244fa1SIlya Dryomov 44463244fa1SIlya Dryomov /* 4453d14c5d2SYehuda Sadeh * requests 4463d14c5d2SYehuda Sadeh */ 4473540bfdbSIlya Dryomov static void request_release_checks(struct ceph_osd_request *req) 4483540bfdbSIlya Dryomov { 4493540bfdbSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 4504609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node)); 4513540bfdbSIlya Dryomov WARN_ON(!list_empty(&req->r_unsafe_item)); 4523540bfdbSIlya Dryomov WARN_ON(req->r_osd); 4533540bfdbSIlya Dryomov } 4543540bfdbSIlya Dryomov 4559e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 4563d14c5d2SYehuda Sadeh { 4579e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 4589e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 4595476492fSAlex Elder unsigned int which; 4603d14c5d2SYehuda Sadeh 4619e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 4629e94af20SIlya Dryomov req->r_request, req->r_reply); 4633540bfdbSIlya Dryomov request_release_checks(req); 4649e94af20SIlya Dryomov 4653d14c5d2SYehuda Sadeh if (req->r_request) 4663d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 4675aea3dcdSIlya Dryomov if (req->r_reply) 468ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 4690fff87ecSAlex Elder 4705476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 4715476492fSAlex Elder osd_req_op_data_release(req, which); 4720fff87ecSAlex Elder 473a66dd383SIlya Dryomov target_destroy(&req->r_t); 4743d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 475d30291b9SIlya Dryomov 4763d14c5d2SYehuda Sadeh if (req->r_mempool) 4773d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 4783f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 4795522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 4803f1af42aSIlya Dryomov else 4813f1af42aSIlya Dryomov kfree(req); 4823d14c5d2SYehuda Sadeh } 4839e94af20SIlya Dryomov 4849e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 4859e94af20SIlya Dryomov { 4869e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 4872c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 4889e94af20SIlya Dryomov kref_get(&req->r_kref); 4899e94af20SIlya Dryomov } 4909e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 4919e94af20SIlya Dryomov 4929e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 4939e94af20SIlya Dryomov { 4943ed97d63SIlya Dryomov if (req) { 4959e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 4962c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 4979e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 4989e94af20SIlya Dryomov } 4993ed97d63SIlya Dryomov } 5009e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 5013d14c5d2SYehuda Sadeh 5023540bfdbSIlya Dryomov static void request_init(struct ceph_osd_request *req) 5033540bfdbSIlya Dryomov { 5043540bfdbSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 5053540bfdbSIlya Dryomov memset(req, 0, sizeof(*req)); 5063540bfdbSIlya Dryomov 5073540bfdbSIlya Dryomov kref_init(&req->r_kref); 5083540bfdbSIlya Dryomov init_completion(&req->r_completion); 5093540bfdbSIlya Dryomov RB_CLEAR_NODE(&req->r_node); 5104609245eSIlya Dryomov RB_CLEAR_NODE(&req->r_mc_node); 5113540bfdbSIlya Dryomov INIT_LIST_HEAD(&req->r_unsafe_item); 5123540bfdbSIlya Dryomov 5133540bfdbSIlya Dryomov target_init(&req->r_t); 5143540bfdbSIlya Dryomov } 5153540bfdbSIlya Dryomov 516922dab61SIlya Dryomov /* 517922dab61SIlya Dryomov * This is ugly, but it allows us to reuse linger registration and ping 518922dab61SIlya Dryomov * requests, keeping the structure of the code around send_linger{_ping}() 519922dab61SIlya Dryomov * reasonable. Setting up a min_nr=2 mempool for each linger request 520922dab61SIlya Dryomov * and dealing with copying ops (this blasts req only, watch op remains 521922dab61SIlya Dryomov * intact) isn't any better. 522922dab61SIlya Dryomov */ 523922dab61SIlya Dryomov static void request_reinit(struct ceph_osd_request *req) 524922dab61SIlya Dryomov { 525922dab61SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 526922dab61SIlya Dryomov bool mempool = req->r_mempool; 527922dab61SIlya Dryomov unsigned int num_ops = req->r_num_ops; 528922dab61SIlya Dryomov u64 snapid = req->r_snapid; 529922dab61SIlya Dryomov struct ceph_snap_context *snapc = req->r_snapc; 530922dab61SIlya Dryomov bool linger = req->r_linger; 531922dab61SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 532922dab61SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 533922dab61SIlya Dryomov 534922dab61SIlya Dryomov dout("%s req %p\n", __func__, req); 5352c935bc5SPeter Zijlstra WARN_ON(kref_read(&req->r_kref) != 1); 536922dab61SIlya Dryomov request_release_checks(req); 537922dab61SIlya Dryomov 5382c935bc5SPeter Zijlstra WARN_ON(kref_read(&request_msg->kref) != 1); 5392c935bc5SPeter Zijlstra WARN_ON(kref_read(&reply_msg->kref) != 1); 540922dab61SIlya Dryomov target_destroy(&req->r_t); 541922dab61SIlya Dryomov 542922dab61SIlya Dryomov request_init(req); 543922dab61SIlya Dryomov req->r_osdc = osdc; 544922dab61SIlya Dryomov req->r_mempool = mempool; 545922dab61SIlya Dryomov req->r_num_ops = num_ops; 546922dab61SIlya Dryomov req->r_snapid = snapid; 547922dab61SIlya Dryomov req->r_snapc = snapc; 548922dab61SIlya Dryomov req->r_linger = linger; 549922dab61SIlya Dryomov req->r_request = request_msg; 550922dab61SIlya Dryomov req->r_reply = reply_msg; 551922dab61SIlya Dryomov } 552922dab61SIlya Dryomov 5533d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 5543d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5551b83bef2SSage Weil unsigned int num_ops, 5563d14c5d2SYehuda Sadeh bool use_mempool, 55754a54007SAlex Elder gfp_t gfp_flags) 5583d14c5d2SYehuda Sadeh { 5593d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5603d14c5d2SYehuda Sadeh 5613d14c5d2SYehuda Sadeh if (use_mempool) { 5623f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 5633d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 5643f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 5653f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 5663d14c5d2SYehuda Sadeh } else { 5673f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 5683f1af42aSIlya Dryomov req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), 5693f1af42aSIlya Dryomov gfp_flags); 5703d14c5d2SYehuda Sadeh } 5713f1af42aSIlya Dryomov if (unlikely(!req)) 5723d14c5d2SYehuda Sadeh return NULL; 5733d14c5d2SYehuda Sadeh 5743540bfdbSIlya Dryomov request_init(req); 5753d14c5d2SYehuda Sadeh req->r_osdc = osdc; 5763d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 57779528734SAlex Elder req->r_num_ops = num_ops; 57884127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 57984127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 5803d14c5d2SYehuda Sadeh 58113d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 58213d1ad16SIlya Dryomov return req; 5833f1af42aSIlya Dryomov } 58413d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 5853f1af42aSIlya Dryomov 5862e59ffd1SIlya Dryomov static int ceph_oloc_encoding_size(const struct ceph_object_locator *oloc) 58730c156d9SYan, Zheng { 58830c156d9SYan, Zheng return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0); 58930c156d9SYan, Zheng } 59030c156d9SYan, Zheng 59113d1ad16SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 59213d1ad16SIlya Dryomov { 59313d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 59413d1ad16SIlya Dryomov struct ceph_msg *msg; 59513d1ad16SIlya Dryomov int msg_size; 5963d14c5d2SYehuda Sadeh 597d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 59830c156d9SYan, Zheng WARN_ON(ceph_oloc_empty(&req->r_base_oloc)); 599d30291b9SIlya Dryomov 60013d1ad16SIlya Dryomov /* create request message */ 6018cb441c0SIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 6028cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 6038cb441c0SIlya Dryomov msg_size += 4 + 4 + 4; /* hash, osdmap_epoch, flags */ 6048cb441c0SIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 6058cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid); /* reqid */ 6068cb441c0SIlya Dryomov msg_size += sizeof(struct ceph_blkin_trace_info); /* trace */ 6078cb441c0SIlya Dryomov msg_size += 4 + sizeof(struct ceph_timespec); /* client_inc, mtime */ 60830c156d9SYan, Zheng msg_size += CEPH_ENCODING_START_BLK_LEN + 60930c156d9SYan, Zheng ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */ 61013d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 61113d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 612ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 613ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 61413d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 6158cb441c0SIlya Dryomov msg_size += 4 + 8; /* retry_attempt, features */ 616ae458f5aSIlya Dryomov 61713d1ad16SIlya Dryomov if (req->r_mempool) 6183d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 6193d14c5d2SYehuda Sadeh else 62013d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); 62113d1ad16SIlya Dryomov if (!msg) 62213d1ad16SIlya Dryomov return -ENOMEM; 6233d14c5d2SYehuda Sadeh 6243d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 6253d14c5d2SYehuda Sadeh req->r_request = msg; 6263d14c5d2SYehuda Sadeh 62713d1ad16SIlya Dryomov /* create reply message */ 62813d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 629711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 630711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 63113d1ad16SIlya Dryomov 63213d1ad16SIlya Dryomov if (req->r_mempool) 63313d1ad16SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 63413d1ad16SIlya Dryomov else 63513d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); 63613d1ad16SIlya Dryomov if (!msg) 63713d1ad16SIlya Dryomov return -ENOMEM; 63813d1ad16SIlya Dryomov 63913d1ad16SIlya Dryomov req->r_reply = msg; 64013d1ad16SIlya Dryomov 64113d1ad16SIlya Dryomov return 0; 64213d1ad16SIlya Dryomov } 64313d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 6443d14c5d2SYehuda Sadeh 645a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 646a8dd0a37SAlex Elder { 647a8dd0a37SAlex Elder switch (opcode) { 64870b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 64970b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 65070b5bfa3SIlya Dryomov #undef GENERATE_CASE 651a8dd0a37SAlex Elder default: 652a8dd0a37SAlex Elder return false; 653a8dd0a37SAlex Elder } 654a8dd0a37SAlex Elder } 655a8dd0a37SAlex Elder 65633803f33SAlex Elder /* 65733803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 65833803f33SAlex Elder * other information associated with them. It also serves as a 65933803f33SAlex Elder * common init routine for all the other init functions, below. 66033803f33SAlex Elder */ 661c99d2d4aSAlex Elder static struct ceph_osd_req_op * 66249719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 663144cba14SYan, Zheng u16 opcode, u32 flags) 66433803f33SAlex Elder { 665c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 666c99d2d4aSAlex Elder 667c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 66833803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 66933803f33SAlex Elder 670c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 67133803f33SAlex Elder memset(op, 0, sizeof (*op)); 67233803f33SAlex Elder op->op = opcode; 673144cba14SYan, Zheng op->flags = flags; 674c99d2d4aSAlex Elder 675c99d2d4aSAlex Elder return op; 67633803f33SAlex Elder } 67733803f33SAlex Elder 67849719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 679144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 68049719778SAlex Elder { 681144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 68249719778SAlex Elder } 68349719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 68449719778SAlex Elder 685c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 686c99d2d4aSAlex Elder unsigned int which, u16 opcode, 68733803f33SAlex Elder u64 offset, u64 length, 68833803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 68933803f33SAlex Elder { 690144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 691144cba14SYan, Zheng opcode, 0); 69233803f33SAlex Elder size_t payload_len = 0; 69333803f33SAlex Elder 694ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 695e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 696e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 69733803f33SAlex Elder 69833803f33SAlex Elder op->extent.offset = offset; 69933803f33SAlex Elder op->extent.length = length; 70033803f33SAlex Elder op->extent.truncate_size = truncate_size; 70133803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 702e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 70333803f33SAlex Elder payload_len += length; 70433803f33SAlex Elder 705de2aa102SIlya Dryomov op->indata_len = payload_len; 70633803f33SAlex Elder } 70733803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 70833803f33SAlex Elder 709c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 710c99d2d4aSAlex Elder unsigned int which, u64 length) 711e5975c7cSAlex Elder { 712c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 713c99d2d4aSAlex Elder u64 previous; 714c99d2d4aSAlex Elder 715c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 716c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 717c99d2d4aSAlex Elder previous = op->extent.length; 718e5975c7cSAlex Elder 719e5975c7cSAlex Elder if (length == previous) 720e5975c7cSAlex Elder return; /* Nothing to do */ 721e5975c7cSAlex Elder BUG_ON(length > previous); 722e5975c7cSAlex Elder 723e5975c7cSAlex Elder op->extent.length = length; 724d641df81SYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 725de2aa102SIlya Dryomov op->indata_len -= previous - length; 726e5975c7cSAlex Elder } 727e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 728e5975c7cSAlex Elder 7292c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 7302c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 7312c63f49aSYan, Zheng { 7322c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 7332c63f49aSYan, Zheng 7342c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 7352c63f49aSYan, Zheng 7362c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 7372c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 7382c63f49aSYan, Zheng /* dup previous one */ 7392c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 7402c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 7412c63f49aSYan, Zheng op->extent = prev_op->extent; 7422c63f49aSYan, Zheng /* adjust offset */ 7432c63f49aSYan, Zheng op->extent.offset += offset_inc; 7442c63f49aSYan, Zheng op->extent.length -= offset_inc; 7452c63f49aSYan, Zheng 7462c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 7472c63f49aSYan, Zheng op->indata_len -= offset_inc; 7482c63f49aSYan, Zheng } 7492c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 7502c63f49aSYan, Zheng 751c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 75204017e29SAlex Elder u16 opcode, const char *class, const char *method) 75333803f33SAlex Elder { 754144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 755144cba14SYan, Zheng opcode, 0); 7565f562df5SAlex Elder struct ceph_pagelist *pagelist; 75733803f33SAlex Elder size_t payload_len = 0; 75833803f33SAlex Elder size_t size; 75933803f33SAlex Elder 76033803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 76133803f33SAlex Elder 7625f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 7635f562df5SAlex Elder BUG_ON(!pagelist); 7645f562df5SAlex Elder ceph_pagelist_init(pagelist); 7655f562df5SAlex Elder 76633803f33SAlex Elder op->cls.class_name = class; 76733803f33SAlex Elder size = strlen(class); 76833803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 76933803f33SAlex Elder op->cls.class_len = size; 7705f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 77133803f33SAlex Elder payload_len += size; 77233803f33SAlex Elder 77333803f33SAlex Elder op->cls.method_name = method; 77433803f33SAlex Elder size = strlen(method); 77533803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 77633803f33SAlex Elder op->cls.method_len = size; 7775f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 77833803f33SAlex Elder payload_len += size; 77933803f33SAlex Elder 780a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 7815f562df5SAlex Elder 782de2aa102SIlya Dryomov op->indata_len = payload_len; 78333803f33SAlex Elder } 78433803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 7858c042b0dSAlex Elder 786d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 787d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 788d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 789d74b50beSYan, Zheng { 790144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 791144cba14SYan, Zheng opcode, 0); 792d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 793d74b50beSYan, Zheng size_t payload_len; 794d74b50beSYan, Zheng 795d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 796d74b50beSYan, Zheng 797d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 798d74b50beSYan, Zheng if (!pagelist) 799d74b50beSYan, Zheng return -ENOMEM; 800d74b50beSYan, Zheng 801d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 802d74b50beSYan, Zheng 803d74b50beSYan, Zheng payload_len = strlen(name); 804d74b50beSYan, Zheng op->xattr.name_len = payload_len; 805d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 806d74b50beSYan, Zheng 807d74b50beSYan, Zheng op->xattr.value_len = size; 808d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 809d74b50beSYan, Zheng payload_len += size; 810d74b50beSYan, Zheng 811d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 812d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 813d74b50beSYan, Zheng 814d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 815de2aa102SIlya Dryomov op->indata_len = payload_len; 816d74b50beSYan, Zheng return 0; 817d74b50beSYan, Zheng } 818d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 819d74b50beSYan, Zheng 820922dab61SIlya Dryomov /* 821922dab61SIlya Dryomov * @watch_opcode: CEPH_OSD_WATCH_OP_* 822922dab61SIlya Dryomov */ 823922dab61SIlya Dryomov static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, 824922dab61SIlya Dryomov u64 cookie, u8 watch_opcode) 82533803f33SAlex Elder { 826922dab61SIlya Dryomov struct ceph_osd_req_op *op; 82733803f33SAlex Elder 828922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); 82933803f33SAlex Elder op->watch.cookie = cookie; 830922dab61SIlya Dryomov op->watch.op = watch_opcode; 831922dab61SIlya Dryomov op->watch.gen = 0; 83233803f33SAlex Elder } 83333803f33SAlex Elder 834c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 835c647b8a8SIlya Dryomov unsigned int which, 836c647b8a8SIlya Dryomov u64 expected_object_size, 837c647b8a8SIlya Dryomov u64 expected_write_size) 838c647b8a8SIlya Dryomov { 839c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 840144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 841144cba14SYan, Zheng 0); 842c647b8a8SIlya Dryomov 843c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 844c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 845c647b8a8SIlya Dryomov 846c647b8a8SIlya Dryomov /* 847c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 848c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 849c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 850c647b8a8SIlya Dryomov */ 851c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 852c647b8a8SIlya Dryomov } 853c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 854c647b8a8SIlya Dryomov 85590af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 856ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 857ec9123c5SAlex Elder { 858ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 859ec9123c5SAlex Elder 860ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 861ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 862ec9123c5SAlex Elder if (length) 86390af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 864ec9123c5SAlex Elder length, osd_data->alignment); 865ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 866ec9123c5SAlex Elder BUG_ON(!length); 86790af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 868ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 869ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 8705359a17dSIlya Dryomov ceph_msg_data_add_bio(msg, &osd_data->bio_pos, length); 871ec9123c5SAlex Elder #endif 872b9e281c2SIlya Dryomov } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BVECS) { 873b9e281c2SIlya Dryomov ceph_msg_data_add_bvecs(msg, &osd_data->bvec_pos); 874ec9123c5SAlex Elder } else { 875ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 876ec9123c5SAlex Elder } 877ec9123c5SAlex Elder } 878ec9123c5SAlex Elder 879bb873b53SIlya Dryomov static u32 osd_req_encode_op(struct ceph_osd_op *dst, 880bb873b53SIlya Dryomov const struct ceph_osd_req_op *src) 8813d14c5d2SYehuda Sadeh { 882a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 883a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 884a8dd0a37SAlex Elder 885a8dd0a37SAlex Elder return 0; 886a8dd0a37SAlex Elder } 8873d14c5d2SYehuda Sadeh 888065a68f9SAlex Elder switch (src->op) { 889fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 890fbfab539SAlex Elder break; 8913d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 8923d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 893e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 894ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 895ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 896175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 897175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 8983d14c5d2SYehuda Sadeh dst->extent.truncate_size = 8993d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 9003d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 9013d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 9023d14c5d2SYehuda Sadeh break; 9033d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 9043d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 9053d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 906bb873b53SIlya Dryomov dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 9073d14c5d2SYehuda Sadeh break; 908a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 909a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 910922dab61SIlya Dryomov dst->watch.ver = cpu_to_le64(0); 911922dab61SIlya Dryomov dst->watch.op = src->watch.op; 912922dab61SIlya Dryomov dst->watch.gen = cpu_to_le32(src->watch.gen); 913922dab61SIlya Dryomov break; 914922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 915a40c4f10SYehuda Sadeh break; 91619079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 91719079203SIlya Dryomov dst->notify.cookie = cpu_to_le64(src->notify.cookie); 91819079203SIlya Dryomov break; 919a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 920a4ed38d7SDouglas Fuller break; 921c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 922c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 923c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 924c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 925c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 926c647b8a8SIlya Dryomov break; 927d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 928d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 929d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 930d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 931d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 932d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 933d74b50beSYan, Zheng break; 934864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 935864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 936864e9197SYan, Zheng break; 9373d14c5d2SYehuda Sadeh default: 9384c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 9398f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 9404c46459cSAlex Elder WARN_ON(1); 941a8dd0a37SAlex Elder 942a8dd0a37SAlex Elder return 0; 9433d14c5d2SYehuda Sadeh } 9447b25bf5fSIlya Dryomov 945a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 9467b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 947de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 948175face2SAlex Elder 949bb873b53SIlya Dryomov return src->indata_len; 9503d14c5d2SYehuda Sadeh } 9513d14c5d2SYehuda Sadeh 9523d14c5d2SYehuda Sadeh /* 9533d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 9543d14c5d2SYehuda Sadeh * extent as needed. 9553d14c5d2SYehuda Sadeh * 9563d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 9573d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 9583d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 9593d14c5d2SYehuda Sadeh */ 9603d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 9613d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 9623d14c5d2SYehuda Sadeh struct ceph_vino vino, 963715e4cd4SYan, Zheng u64 off, u64 *plen, 964715e4cd4SYan, Zheng unsigned int which, int num_ops, 9653d14c5d2SYehuda Sadeh int opcode, int flags, 9663d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 9673d14c5d2SYehuda Sadeh u32 truncate_seq, 9683d14c5d2SYehuda Sadeh u64 truncate_size, 969153e5167SAlex Elder bool use_mempool) 9703d14c5d2SYehuda Sadeh { 9713d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 97275d1c941SAlex Elder u64 objnum = 0; 97375d1c941SAlex Elder u64 objoff = 0; 97475d1c941SAlex Elder u64 objlen = 0; 9756816282dSSage Weil int r; 9763d14c5d2SYehuda Sadeh 977ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 978864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 979864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 9803d14c5d2SYehuda Sadeh 981acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 982ae7ca4a3SAlex Elder GFP_NOFS); 98313d1ad16SIlya Dryomov if (!req) { 98413d1ad16SIlya Dryomov r = -ENOMEM; 98513d1ad16SIlya Dryomov goto fail; 98613d1ad16SIlya Dryomov } 98779528734SAlex Elder 9883d14c5d2SYehuda Sadeh /* calculate max write size */ 989a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 99013d1ad16SIlya Dryomov if (r) 99113d1ad16SIlya Dryomov goto fail; 992a19dadfbSAlex Elder 993864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 994144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 995864e9197SYan, Zheng } else { 9967627151eSYan, Zheng u32 object_size = layout->object_size; 997864e9197SYan, Zheng u32 object_base = off - objoff; 998ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 999d18d1e28SAlex Elder if (truncate_size <= object_base) { 1000d18d1e28SAlex Elder truncate_size = 0; 1001d18d1e28SAlex Elder } else { 1002d18d1e28SAlex Elder truncate_size -= object_base; 1003d18d1e28SAlex Elder if (truncate_size > object_size) 1004d18d1e28SAlex Elder truncate_size = object_size; 1005d18d1e28SAlex Elder } 1006ccca4e37SYan, Zheng } 1007715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 1008b0270324SAlex Elder truncate_size, truncate_seq); 1009864e9197SYan, Zheng } 1010d18d1e28SAlex Elder 1011a1f4020aSJeff Layton req->r_abort_on_full = true; 1012bb873b53SIlya Dryomov req->r_flags = flags; 10137627151eSYan, Zheng req->r_base_oloc.pool = layout->pool_id; 101430c156d9SYan, Zheng req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns); 1015d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 1016dbe0fc41SAlex Elder 1017bb873b53SIlya Dryomov req->r_snapid = vino.snap; 1018bb873b53SIlya Dryomov if (flags & CEPH_OSD_FLAG_WRITE) 1019bb873b53SIlya Dryomov req->r_data_offset = off; 1020bb873b53SIlya Dryomov 102113d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 102213d1ad16SIlya Dryomov if (r) 102313d1ad16SIlya Dryomov goto fail; 102413d1ad16SIlya Dryomov 10253d14c5d2SYehuda Sadeh return req; 102613d1ad16SIlya Dryomov 102713d1ad16SIlya Dryomov fail: 102813d1ad16SIlya Dryomov ceph_osdc_put_request(req); 102913d1ad16SIlya Dryomov return ERR_PTR(r); 10303d14c5d2SYehuda Sadeh } 10313d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 10323d14c5d2SYehuda Sadeh 10333d14c5d2SYehuda Sadeh /* 10343d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 10353d14c5d2SYehuda Sadeh */ 1036fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 10374609245eSIlya Dryomov DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) 10383d14c5d2SYehuda Sadeh 10390247a0cfSIlya Dryomov static bool osd_homeless(struct ceph_osd *osd) 10400247a0cfSIlya Dryomov { 10410247a0cfSIlya Dryomov return osd->o_osd == CEPH_HOMELESS_OSD; 10420247a0cfSIlya Dryomov } 10430247a0cfSIlya Dryomov 10445aea3dcdSIlya Dryomov static bool osd_registered(struct ceph_osd *osd) 10453d14c5d2SYehuda Sadeh { 10465aea3dcdSIlya Dryomov verify_osdc_locked(osd->o_osdc); 10473d14c5d2SYehuda Sadeh 10485aea3dcdSIlya Dryomov return !RB_EMPTY_NODE(&osd->o_node); 10493d14c5d2SYehuda Sadeh } 10503d14c5d2SYehuda Sadeh 10513d14c5d2SYehuda Sadeh /* 10520247a0cfSIlya Dryomov * Assumes @osd is zero-initialized. 10530247a0cfSIlya Dryomov */ 10540247a0cfSIlya Dryomov static void osd_init(struct ceph_osd *osd) 10550247a0cfSIlya Dryomov { 105602113a0fSElena Reshetova refcount_set(&osd->o_ref, 1); 10570247a0cfSIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 10585aea3dcdSIlya Dryomov osd->o_requests = RB_ROOT; 1059922dab61SIlya Dryomov osd->o_linger_requests = RB_ROOT; 1060a02a946dSIlya Dryomov osd->o_backoff_mappings = RB_ROOT; 1061a02a946dSIlya Dryomov osd->o_backoffs_by_id = RB_ROOT; 10620247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_osd_lru); 10630247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_keepalive_item); 10640247a0cfSIlya Dryomov osd->o_incarnation = 1; 10655aea3dcdSIlya Dryomov mutex_init(&osd->lock); 10660247a0cfSIlya Dryomov } 10670247a0cfSIlya Dryomov 10680247a0cfSIlya Dryomov static void osd_cleanup(struct ceph_osd *osd) 10690247a0cfSIlya Dryomov { 10700247a0cfSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); 10715aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 1072922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 1073a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoff_mappings)); 1074a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoffs_by_id)); 10750247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_osd_lru)); 10760247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_keepalive_item)); 10770247a0cfSIlya Dryomov 10780247a0cfSIlya Dryomov if (osd->o_auth.authorizer) { 10790247a0cfSIlya Dryomov WARN_ON(osd_homeless(osd)); 10800247a0cfSIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 10810247a0cfSIlya Dryomov } 10820247a0cfSIlya Dryomov } 10830247a0cfSIlya Dryomov 10840247a0cfSIlya Dryomov /* 10853d14c5d2SYehuda Sadeh * Track open sessions with osds. 10863d14c5d2SYehuda Sadeh */ 1087e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10883d14c5d2SYehuda Sadeh { 10893d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10903d14c5d2SYehuda Sadeh 10910247a0cfSIlya Dryomov WARN_ON(onum == CEPH_HOMELESS_OSD); 10920247a0cfSIlya Dryomov 10937a28f59bSIlya Dryomov osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); 10940247a0cfSIlya Dryomov osd_init(osd); 10953d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1096e10006f8SAlex Elder osd->o_osd = onum; 10973d14c5d2SYehuda Sadeh 1098b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10993d14c5d2SYehuda Sadeh 11003d14c5d2SYehuda Sadeh return osd; 11013d14c5d2SYehuda Sadeh } 11023d14c5d2SYehuda Sadeh 11033d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 11043d14c5d2SYehuda Sadeh { 110502113a0fSElena Reshetova if (refcount_inc_not_zero(&osd->o_ref)) { 110602113a0fSElena Reshetova dout("get_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref)-1, 110702113a0fSElena Reshetova refcount_read(&osd->o_ref)); 11083d14c5d2SYehuda Sadeh return osd; 11093d14c5d2SYehuda Sadeh } else { 11103d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 11113d14c5d2SYehuda Sadeh return NULL; 11123d14c5d2SYehuda Sadeh } 11133d14c5d2SYehuda Sadeh } 11143d14c5d2SYehuda Sadeh 11153d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 11163d14c5d2SYehuda Sadeh { 111702113a0fSElena Reshetova dout("put_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref), 111802113a0fSElena Reshetova refcount_read(&osd->o_ref) - 1); 111902113a0fSElena Reshetova if (refcount_dec_and_test(&osd->o_ref)) { 11200247a0cfSIlya Dryomov osd_cleanup(osd); 11213d14c5d2SYehuda Sadeh kfree(osd); 11223d14c5d2SYehuda Sadeh } 11233d14c5d2SYehuda Sadeh } 11243d14c5d2SYehuda Sadeh 1125fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1126fcd00b68SIlya Dryomov 11279dd2845cSIlya Dryomov static void __move_osd_to_lru(struct ceph_osd *osd) 11283d14c5d2SYehuda Sadeh { 11299dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 11309dd2845cSIlya Dryomov 11319dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11323d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1133bbf37ec3SIlya Dryomov 11349dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 11353d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 11369dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 11379dd2845cSIlya Dryomov 1138a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 11393d14c5d2SYehuda Sadeh } 11403d14c5d2SYehuda Sadeh 11419dd2845cSIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd *osd) 1142bbf37ec3SIlya Dryomov { 11435aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1144922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) 11459dd2845cSIlya Dryomov __move_osd_to_lru(osd); 1146bbf37ec3SIlya Dryomov } 1147bbf37ec3SIlya Dryomov 11483d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 11493d14c5d2SYehuda Sadeh { 11509dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 11519dd2845cSIlya Dryomov 11529dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11539dd2845cSIlya Dryomov 11549dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 11553d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 11563d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11579dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 11583d14c5d2SYehuda Sadeh } 11593d14c5d2SYehuda Sadeh 11603d14c5d2SYehuda Sadeh /* 11615aea3dcdSIlya Dryomov * Close the connection and assign any leftover requests to the 11625aea3dcdSIlya Dryomov * homeless session. 11635aea3dcdSIlya Dryomov */ 11645aea3dcdSIlya Dryomov static void close_osd(struct ceph_osd *osd) 11655aea3dcdSIlya Dryomov { 11665aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 11675aea3dcdSIlya Dryomov struct rb_node *n; 11685aea3dcdSIlya Dryomov 11695aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 11705aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11715aea3dcdSIlya Dryomov 11725aea3dcdSIlya Dryomov ceph_con_close(&osd->o_con); 11735aea3dcdSIlya Dryomov 11745aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 11755aea3dcdSIlya Dryomov struct ceph_osd_request *req = 11765aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 11775aea3dcdSIlya Dryomov 11785aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 11795aea3dcdSIlya Dryomov 11805aea3dcdSIlya Dryomov dout(" reassigning req %p tid %llu\n", req, req->r_tid); 11815aea3dcdSIlya Dryomov unlink_request(osd, req); 11825aea3dcdSIlya Dryomov link_request(&osdc->homeless_osd, req); 11835aea3dcdSIlya Dryomov } 1184922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 1185922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1186922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 1187922dab61SIlya Dryomov 1188922dab61SIlya Dryomov n = rb_next(n); /* unlink_linger() */ 1189922dab61SIlya Dryomov 1190922dab61SIlya Dryomov dout(" reassigning lreq %p linger_id %llu\n", lreq, 1191922dab61SIlya Dryomov lreq->linger_id); 1192922dab61SIlya Dryomov unlink_linger(osd, lreq); 1193922dab61SIlya Dryomov link_linger(&osdc->homeless_osd, lreq); 1194922dab61SIlya Dryomov } 1195a02a946dSIlya Dryomov clear_backoffs(osd); 11965aea3dcdSIlya Dryomov 11975aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 11985aea3dcdSIlya Dryomov erase_osd(&osdc->osds, osd); 11995aea3dcdSIlya Dryomov put_osd(osd); 12005aea3dcdSIlya Dryomov } 12015aea3dcdSIlya Dryomov 12025aea3dcdSIlya Dryomov /* 12033d14c5d2SYehuda Sadeh * reset osd connect 12043d14c5d2SYehuda Sadeh */ 12055aea3dcdSIlya Dryomov static int reopen_osd(struct ceph_osd *osd) 12063d14c5d2SYehuda Sadeh { 1207c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 12083d14c5d2SYehuda Sadeh 12095aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 12105aea3dcdSIlya Dryomov 12115aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1212922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) { 12135aea3dcdSIlya Dryomov close_osd(osd); 1214c3acb181SAlex Elder return -ENODEV; 1215c3acb181SAlex Elder } 1216c3acb181SAlex Elder 12175aea3dcdSIlya Dryomov peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; 1218c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 12193d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 12205aea3dcdSIlya Dryomov struct rb_node *n; 1221c3acb181SAlex Elder 12223d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 12230b4af2e8SIlya Dryomov "letting msgr retry\n"); 12243d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 12255aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 12265aea3dcdSIlya Dryomov struct ceph_osd_request *req = 12275aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 12283d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 12295aea3dcdSIlya Dryomov } 1230c3acb181SAlex Elder 1231c3acb181SAlex Elder return -EAGAIN; 12323d14c5d2SYehuda Sadeh } 1233c3acb181SAlex Elder 1234c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1235c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1236c3acb181SAlex Elder osd->o_incarnation++; 1237c3acb181SAlex Elder 1238c3acb181SAlex Elder return 0; 12393d14c5d2SYehuda Sadeh } 12403d14c5d2SYehuda Sadeh 12415aea3dcdSIlya Dryomov static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, 12425aea3dcdSIlya Dryomov bool wrlocked) 12433d14c5d2SYehuda Sadeh { 12445aea3dcdSIlya Dryomov struct ceph_osd *osd; 12455aea3dcdSIlya Dryomov 12465aea3dcdSIlya Dryomov if (wrlocked) 12475aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 12485aea3dcdSIlya Dryomov else 12495aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 12505aea3dcdSIlya Dryomov 12515aea3dcdSIlya Dryomov if (o != CEPH_HOMELESS_OSD) 12525aea3dcdSIlya Dryomov osd = lookup_osd(&osdc->osds, o); 12535aea3dcdSIlya Dryomov else 12545aea3dcdSIlya Dryomov osd = &osdc->homeless_osd; 12555aea3dcdSIlya Dryomov if (!osd) { 12565aea3dcdSIlya Dryomov if (!wrlocked) 12575aea3dcdSIlya Dryomov return ERR_PTR(-EAGAIN); 12585aea3dcdSIlya Dryomov 12595aea3dcdSIlya Dryomov osd = create_osd(osdc, o); 12605aea3dcdSIlya Dryomov insert_osd(&osdc->osds, osd); 12615aea3dcdSIlya Dryomov ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, 12625aea3dcdSIlya Dryomov &osdc->osdmap->osd_addr[osd->o_osd]); 12635aea3dcdSIlya Dryomov } 12645aea3dcdSIlya Dryomov 12655aea3dcdSIlya Dryomov dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); 12665aea3dcdSIlya Dryomov return osd; 1267a40c4f10SYehuda Sadeh } 1268a40c4f10SYehuda Sadeh 12693d14c5d2SYehuda Sadeh /* 12705aea3dcdSIlya Dryomov * Create request <-> OSD session relation. 12715aea3dcdSIlya Dryomov * 12725aea3dcdSIlya Dryomov * @req has to be assigned a tid, @osd may be homeless. 12733d14c5d2SYehuda Sadeh */ 12745aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) 12753d14c5d2SYehuda Sadeh { 12765aea3dcdSIlya Dryomov verify_osd_locked(osd); 12775aea3dcdSIlya Dryomov WARN_ON(!req->r_tid || req->r_osd); 12785aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 127935f9f8a0SSage Weil req, req->r_tid); 12805aea3dcdSIlya Dryomov 12815aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 12825aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 12835aea3dcdSIlya Dryomov else 12845aea3dcdSIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 12855aea3dcdSIlya Dryomov 12865aea3dcdSIlya Dryomov get_osd(osd); 12875aea3dcdSIlya Dryomov insert_request(&osd->o_requests, req); 12885aea3dcdSIlya Dryomov req->r_osd = osd; 128935f9f8a0SSage Weil } 129035f9f8a0SSage Weil 12915aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) 12923d14c5d2SYehuda Sadeh { 12935aea3dcdSIlya Dryomov verify_osd_locked(osd); 12945aea3dcdSIlya Dryomov WARN_ON(req->r_osd != osd); 12955aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 12965aea3dcdSIlya Dryomov req, req->r_tid); 12975aea3dcdSIlya Dryomov 12985aea3dcdSIlya Dryomov req->r_osd = NULL; 12995aea3dcdSIlya Dryomov erase_request(&osd->o_requests, req); 13005aea3dcdSIlya Dryomov put_osd(osd); 13015aea3dcdSIlya Dryomov 13025aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 13035aea3dcdSIlya Dryomov maybe_move_osd_to_lru(osd); 13045aea3dcdSIlya Dryomov else 13055aea3dcdSIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 13063d14c5d2SYehuda Sadeh } 13073d14c5d2SYehuda Sadeh 130863244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 130963244fa1SIlya Dryomov { 131063244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 131163244fa1SIlya Dryomov } 131263244fa1SIlya Dryomov 131342c1b124SIlya Dryomov static bool have_pool_full(struct ceph_osd_client *osdc) 131442c1b124SIlya Dryomov { 131542c1b124SIlya Dryomov struct rb_node *n; 131642c1b124SIlya Dryomov 131742c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 131842c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 131942c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 132042c1b124SIlya Dryomov 132142c1b124SIlya Dryomov if (__pool_full(pi)) 132242c1b124SIlya Dryomov return true; 132342c1b124SIlya Dryomov } 132442c1b124SIlya Dryomov 132542c1b124SIlya Dryomov return false; 132642c1b124SIlya Dryomov } 132742c1b124SIlya Dryomov 13285aea3dcdSIlya Dryomov static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) 13295aea3dcdSIlya Dryomov { 13305aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 13315aea3dcdSIlya Dryomov 13325aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 13335aea3dcdSIlya Dryomov if (!pi) 13345aea3dcdSIlya Dryomov return false; 13355aea3dcdSIlya Dryomov 13365aea3dcdSIlya Dryomov return __pool_full(pi); 13375aea3dcdSIlya Dryomov } 13385aea3dcdSIlya Dryomov 13393d14c5d2SYehuda Sadeh /* 1340d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1341d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1342d29adb34SJosh Durgin */ 134363244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 134463244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 134563244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 134663244fa1SIlya Dryomov { 1347b7ec35b3SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 1348b7ec35b3SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 1349b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 135063244fa1SIlya Dryomov __pool_full(pi); 135163244fa1SIlya Dryomov 13526d637a54SIlya Dryomov WARN_ON(pi->id != t->target_oloc.pool); 135358eb7932SJeff Layton return ((t->flags & CEPH_OSD_FLAG_READ) && pauserd) || 135458eb7932SJeff Layton ((t->flags & CEPH_OSD_FLAG_WRITE) && pausewr) || 135558eb7932SJeff Layton (osdc->osdmap->epoch < osdc->epoch_barrier); 135663244fa1SIlya Dryomov } 135763244fa1SIlya Dryomov 135863244fa1SIlya Dryomov enum calc_target_result { 135963244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 136063244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 136163244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 136263244fa1SIlya Dryomov }; 136363244fa1SIlya Dryomov 136463244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 136563244fa1SIlya Dryomov struct ceph_osd_request_target *t, 13667de030d6SIlya Dryomov struct ceph_connection *con, 136763244fa1SIlya Dryomov bool any_change) 136863244fa1SIlya Dryomov { 136963244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 137063244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 137163244fa1SIlya Dryomov struct ceph_osds up, acting; 137263244fa1SIlya Dryomov bool force_resend = false; 137384ed45dfSIlya Dryomov bool unpaused = false; 137484ed45dfSIlya Dryomov bool legacy_change; 13757de030d6SIlya Dryomov bool split = false; 1376b7ec35b3SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); 1377ae78dd81SIlya Dryomov bool recovery_deletes = ceph_osdmap_flag(osdc, 1378ae78dd81SIlya Dryomov CEPH_OSDMAP_RECOVERY_DELETES); 137963244fa1SIlya Dryomov enum calc_target_result ct_res; 138063244fa1SIlya Dryomov int ret; 138163244fa1SIlya Dryomov 138204c7d789SIlya Dryomov t->epoch = osdc->osdmap->epoch; 138363244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 138463244fa1SIlya Dryomov if (!pi) { 138563244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 138663244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 138763244fa1SIlya Dryomov goto out; 138863244fa1SIlya Dryomov } 138963244fa1SIlya Dryomov 139063244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 1391dc93e0e2SIlya Dryomov if (t->last_force_resend < pi->last_force_request_resend) { 1392dc93e0e2SIlya Dryomov t->last_force_resend = pi->last_force_request_resend; 139363244fa1SIlya Dryomov force_resend = true; 1394dc93e0e2SIlya Dryomov } else if (t->last_force_resend == 0) { 139563244fa1SIlya Dryomov force_resend = true; 139663244fa1SIlya Dryomov } 139763244fa1SIlya Dryomov } 139863244fa1SIlya Dryomov 1399db098ec4SIlya Dryomov /* apply tiering */ 1400db098ec4SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 1401db098ec4SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 1402db098ec4SIlya Dryomov if ((t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 140363244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) 140463244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 140563244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) 140663244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 14076d637a54SIlya Dryomov 14086d637a54SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->target_oloc.pool); 14096d637a54SIlya Dryomov if (!pi) { 14106d637a54SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 14116d637a54SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 14126d637a54SIlya Dryomov goto out; 14136d637a54SIlya Dryomov } 141463244fa1SIlya Dryomov } 141563244fa1SIlya Dryomov 1416df28152dSIlya Dryomov ret = __ceph_object_locator_to_pg(pi, &t->target_oid, &t->target_oloc, 1417df28152dSIlya Dryomov &pgid); 141863244fa1SIlya Dryomov if (ret) { 141963244fa1SIlya Dryomov WARN_ON(ret != -ENOENT); 142063244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 142163244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 142263244fa1SIlya Dryomov goto out; 142363244fa1SIlya Dryomov } 142463244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 142563244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 142663244fa1SIlya Dryomov 1427df28152dSIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, pi, &pgid, &up, &acting); 142863244fa1SIlya Dryomov if (any_change && 142963244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 143063244fa1SIlya Dryomov &acting, 143163244fa1SIlya Dryomov &t->up, 143263244fa1SIlya Dryomov &up, 143363244fa1SIlya Dryomov t->size, 143463244fa1SIlya Dryomov pi->size, 143563244fa1SIlya Dryomov t->min_size, 143663244fa1SIlya Dryomov pi->min_size, 143763244fa1SIlya Dryomov t->pg_num, 143863244fa1SIlya Dryomov pi->pg_num, 143963244fa1SIlya Dryomov t->sort_bitwise, 144063244fa1SIlya Dryomov sort_bitwise, 1441ae78dd81SIlya Dryomov t->recovery_deletes, 1442ae78dd81SIlya Dryomov recovery_deletes, 144363244fa1SIlya Dryomov &last_pgid)) 144463244fa1SIlya Dryomov force_resend = true; 144563244fa1SIlya Dryomov 144663244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 144763244fa1SIlya Dryomov t->paused = false; 144884ed45dfSIlya Dryomov unpaused = true; 144963244fa1SIlya Dryomov } 145084ed45dfSIlya Dryomov legacy_change = ceph_pg_compare(&t->pgid, &pgid) || 145184ed45dfSIlya Dryomov ceph_osds_changed(&t->acting, &acting, any_change); 14527de030d6SIlya Dryomov if (t->pg_num) 14537de030d6SIlya Dryomov split = ceph_pg_is_split(&last_pgid, t->pg_num, pi->pg_num); 145463244fa1SIlya Dryomov 14557de030d6SIlya Dryomov if (legacy_change || force_resend || split) { 145663244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 1457df28152dSIlya Dryomov ceph_pg_to_primary_shard(osdc->osdmap, pi, &pgid, &t->spgid); 145863244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 145963244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 146063244fa1SIlya Dryomov t->size = pi->size; 146163244fa1SIlya Dryomov t->min_size = pi->min_size; 146263244fa1SIlya Dryomov t->pg_num = pi->pg_num; 146363244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 146463244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 1465ae78dd81SIlya Dryomov t->recovery_deletes = recovery_deletes; 146663244fa1SIlya Dryomov 146763244fa1SIlya Dryomov t->osd = acting.primary; 146863244fa1SIlya Dryomov } 146963244fa1SIlya Dryomov 14707de030d6SIlya Dryomov if (unpaused || legacy_change || force_resend || 14717de030d6SIlya Dryomov (split && con && CEPH_HAVE_FEATURE(con->peer_features, 14727de030d6SIlya Dryomov RESEND_ON_SPLIT))) 147384ed45dfSIlya Dryomov ct_res = CALC_TARGET_NEED_RESEND; 147484ed45dfSIlya Dryomov else 147584ed45dfSIlya Dryomov ct_res = CALC_TARGET_NO_ACTION; 147684ed45dfSIlya Dryomov 147763244fa1SIlya Dryomov out: 147863244fa1SIlya Dryomov dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); 147963244fa1SIlya Dryomov return ct_res; 148063244fa1SIlya Dryomov } 148163244fa1SIlya Dryomov 1482a02a946dSIlya Dryomov static struct ceph_spg_mapping *alloc_spg_mapping(void) 1483a02a946dSIlya Dryomov { 1484a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1485a02a946dSIlya Dryomov 1486a02a946dSIlya Dryomov spg = kmalloc(sizeof(*spg), GFP_NOIO); 1487a02a946dSIlya Dryomov if (!spg) 1488a02a946dSIlya Dryomov return NULL; 1489a02a946dSIlya Dryomov 1490a02a946dSIlya Dryomov RB_CLEAR_NODE(&spg->node); 1491a02a946dSIlya Dryomov spg->backoffs = RB_ROOT; 1492a02a946dSIlya Dryomov return spg; 1493a02a946dSIlya Dryomov } 1494a02a946dSIlya Dryomov 1495a02a946dSIlya Dryomov static void free_spg_mapping(struct ceph_spg_mapping *spg) 1496a02a946dSIlya Dryomov { 1497a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&spg->node)); 1498a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&spg->backoffs)); 1499a02a946dSIlya Dryomov 1500a02a946dSIlya Dryomov kfree(spg); 1501a02a946dSIlya Dryomov } 1502a02a946dSIlya Dryomov 1503a02a946dSIlya Dryomov /* 1504a02a946dSIlya Dryomov * rbtree of ceph_spg_mapping for handling map<spg_t, ...>, similar to 1505a02a946dSIlya Dryomov * ceph_pg_mapping. Used to track OSD backoffs -- a backoff [range] is 1506a02a946dSIlya Dryomov * defined only within a specific spgid; it does not pass anything to 1507a02a946dSIlya Dryomov * children on split, or to another primary. 1508a02a946dSIlya Dryomov */ 1509a02a946dSIlya Dryomov DEFINE_RB_FUNCS2(spg_mapping, struct ceph_spg_mapping, spgid, ceph_spg_compare, 1510a02a946dSIlya Dryomov RB_BYPTR, const struct ceph_spg *, node) 1511a02a946dSIlya Dryomov 1512a02a946dSIlya Dryomov static u64 hoid_get_bitwise_key(const struct ceph_hobject_id *hoid) 1513a02a946dSIlya Dryomov { 1514a02a946dSIlya Dryomov return hoid->is_max ? 0x100000000ull : hoid->hash_reverse_bits; 1515a02a946dSIlya Dryomov } 1516a02a946dSIlya Dryomov 1517a02a946dSIlya Dryomov static void hoid_get_effective_key(const struct ceph_hobject_id *hoid, 1518a02a946dSIlya Dryomov void **pkey, size_t *pkey_len) 1519a02a946dSIlya Dryomov { 1520a02a946dSIlya Dryomov if (hoid->key_len) { 1521a02a946dSIlya Dryomov *pkey = hoid->key; 1522a02a946dSIlya Dryomov *pkey_len = hoid->key_len; 1523a02a946dSIlya Dryomov } else { 1524a02a946dSIlya Dryomov *pkey = hoid->oid; 1525a02a946dSIlya Dryomov *pkey_len = hoid->oid_len; 1526a02a946dSIlya Dryomov } 1527a02a946dSIlya Dryomov } 1528a02a946dSIlya Dryomov 1529a02a946dSIlya Dryomov static int compare_names(const void *name1, size_t name1_len, 1530a02a946dSIlya Dryomov const void *name2, size_t name2_len) 1531a02a946dSIlya Dryomov { 1532a02a946dSIlya Dryomov int ret; 1533a02a946dSIlya Dryomov 1534a02a946dSIlya Dryomov ret = memcmp(name1, name2, min(name1_len, name2_len)); 1535a02a946dSIlya Dryomov if (!ret) { 1536a02a946dSIlya Dryomov if (name1_len < name2_len) 1537a02a946dSIlya Dryomov ret = -1; 1538a02a946dSIlya Dryomov else if (name1_len > name2_len) 1539a02a946dSIlya Dryomov ret = 1; 1540a02a946dSIlya Dryomov } 1541a02a946dSIlya Dryomov return ret; 1542a02a946dSIlya Dryomov } 1543a02a946dSIlya Dryomov 1544a02a946dSIlya Dryomov static int hoid_compare(const struct ceph_hobject_id *lhs, 1545a02a946dSIlya Dryomov const struct ceph_hobject_id *rhs) 1546a02a946dSIlya Dryomov { 1547a02a946dSIlya Dryomov void *effective_key1, *effective_key2; 1548a02a946dSIlya Dryomov size_t effective_key1_len, effective_key2_len; 1549a02a946dSIlya Dryomov int ret; 1550a02a946dSIlya Dryomov 1551a02a946dSIlya Dryomov if (lhs->is_max < rhs->is_max) 1552a02a946dSIlya Dryomov return -1; 1553a02a946dSIlya Dryomov if (lhs->is_max > rhs->is_max) 1554a02a946dSIlya Dryomov return 1; 1555a02a946dSIlya Dryomov 1556a02a946dSIlya Dryomov if (lhs->pool < rhs->pool) 1557a02a946dSIlya Dryomov return -1; 1558a02a946dSIlya Dryomov if (lhs->pool > rhs->pool) 1559a02a946dSIlya Dryomov return 1; 1560a02a946dSIlya Dryomov 1561a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) < hoid_get_bitwise_key(rhs)) 1562a02a946dSIlya Dryomov return -1; 1563a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) > hoid_get_bitwise_key(rhs)) 1564a02a946dSIlya Dryomov return 1; 1565a02a946dSIlya Dryomov 1566a02a946dSIlya Dryomov ret = compare_names(lhs->nspace, lhs->nspace_len, 1567a02a946dSIlya Dryomov rhs->nspace, rhs->nspace_len); 1568a02a946dSIlya Dryomov if (ret) 1569a02a946dSIlya Dryomov return ret; 1570a02a946dSIlya Dryomov 1571a02a946dSIlya Dryomov hoid_get_effective_key(lhs, &effective_key1, &effective_key1_len); 1572a02a946dSIlya Dryomov hoid_get_effective_key(rhs, &effective_key2, &effective_key2_len); 1573a02a946dSIlya Dryomov ret = compare_names(effective_key1, effective_key1_len, 1574a02a946dSIlya Dryomov effective_key2, effective_key2_len); 1575a02a946dSIlya Dryomov if (ret) 1576a02a946dSIlya Dryomov return ret; 1577a02a946dSIlya Dryomov 1578a02a946dSIlya Dryomov ret = compare_names(lhs->oid, lhs->oid_len, rhs->oid, rhs->oid_len); 1579a02a946dSIlya Dryomov if (ret) 1580a02a946dSIlya Dryomov return ret; 1581a02a946dSIlya Dryomov 1582a02a946dSIlya Dryomov if (lhs->snapid < rhs->snapid) 1583a02a946dSIlya Dryomov return -1; 1584a02a946dSIlya Dryomov if (lhs->snapid > rhs->snapid) 1585a02a946dSIlya Dryomov return 1; 1586a02a946dSIlya Dryomov 1587a02a946dSIlya Dryomov return 0; 1588a02a946dSIlya Dryomov } 1589a02a946dSIlya Dryomov 1590a02a946dSIlya Dryomov /* 1591a02a946dSIlya Dryomov * For decoding ->begin and ->end of MOSDBackoff only -- no MIN/MAX 1592a02a946dSIlya Dryomov * compat stuff here. 1593a02a946dSIlya Dryomov * 1594a02a946dSIlya Dryomov * Assumes @hoid is zero-initialized. 1595a02a946dSIlya Dryomov */ 1596a02a946dSIlya Dryomov static int decode_hoid(void **p, void *end, struct ceph_hobject_id *hoid) 1597a02a946dSIlya Dryomov { 1598a02a946dSIlya Dryomov u8 struct_v; 1599a02a946dSIlya Dryomov u32 struct_len; 1600a02a946dSIlya Dryomov int ret; 1601a02a946dSIlya Dryomov 1602a02a946dSIlya Dryomov ret = ceph_start_decoding(p, end, 4, "hobject_t", &struct_v, 1603a02a946dSIlya Dryomov &struct_len); 1604a02a946dSIlya Dryomov if (ret) 1605a02a946dSIlya Dryomov return ret; 1606a02a946dSIlya Dryomov 1607a02a946dSIlya Dryomov if (struct_v < 4) { 1608a02a946dSIlya Dryomov pr_err("got struct_v %d < 4 of hobject_t\n", struct_v); 1609a02a946dSIlya Dryomov goto e_inval; 1610a02a946dSIlya Dryomov } 1611a02a946dSIlya Dryomov 1612a02a946dSIlya Dryomov hoid->key = ceph_extract_encoded_string(p, end, &hoid->key_len, 1613a02a946dSIlya Dryomov GFP_NOIO); 1614a02a946dSIlya Dryomov if (IS_ERR(hoid->key)) { 1615a02a946dSIlya Dryomov ret = PTR_ERR(hoid->key); 1616a02a946dSIlya Dryomov hoid->key = NULL; 1617a02a946dSIlya Dryomov return ret; 1618a02a946dSIlya Dryomov } 1619a02a946dSIlya Dryomov 1620a02a946dSIlya Dryomov hoid->oid = ceph_extract_encoded_string(p, end, &hoid->oid_len, 1621a02a946dSIlya Dryomov GFP_NOIO); 1622a02a946dSIlya Dryomov if (IS_ERR(hoid->oid)) { 1623a02a946dSIlya Dryomov ret = PTR_ERR(hoid->oid); 1624a02a946dSIlya Dryomov hoid->oid = NULL; 1625a02a946dSIlya Dryomov return ret; 1626a02a946dSIlya Dryomov } 1627a02a946dSIlya Dryomov 1628a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->snapid, e_inval); 1629a02a946dSIlya Dryomov ceph_decode_32_safe(p, end, hoid->hash, e_inval); 1630a02a946dSIlya Dryomov ceph_decode_8_safe(p, end, hoid->is_max, e_inval); 1631a02a946dSIlya Dryomov 1632a02a946dSIlya Dryomov hoid->nspace = ceph_extract_encoded_string(p, end, &hoid->nspace_len, 1633a02a946dSIlya Dryomov GFP_NOIO); 1634a02a946dSIlya Dryomov if (IS_ERR(hoid->nspace)) { 1635a02a946dSIlya Dryomov ret = PTR_ERR(hoid->nspace); 1636a02a946dSIlya Dryomov hoid->nspace = NULL; 1637a02a946dSIlya Dryomov return ret; 1638a02a946dSIlya Dryomov } 1639a02a946dSIlya Dryomov 1640a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->pool, e_inval); 1641a02a946dSIlya Dryomov 1642a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1643a02a946dSIlya Dryomov return 0; 1644a02a946dSIlya Dryomov 1645a02a946dSIlya Dryomov e_inval: 1646a02a946dSIlya Dryomov return -EINVAL; 1647a02a946dSIlya Dryomov } 1648a02a946dSIlya Dryomov 1649a02a946dSIlya Dryomov static int hoid_encoding_size(const struct ceph_hobject_id *hoid) 1650a02a946dSIlya Dryomov { 1651a02a946dSIlya Dryomov return 8 + 4 + 1 + 8 + /* snapid, hash, is_max, pool */ 1652a02a946dSIlya Dryomov 4 + hoid->key_len + 4 + hoid->oid_len + 4 + hoid->nspace_len; 1653a02a946dSIlya Dryomov } 1654a02a946dSIlya Dryomov 1655a02a946dSIlya Dryomov static void encode_hoid(void **p, void *end, const struct ceph_hobject_id *hoid) 1656a02a946dSIlya Dryomov { 1657a02a946dSIlya Dryomov ceph_start_encoding(p, 4, 3, hoid_encoding_size(hoid)); 1658a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->key, hoid->key_len); 1659a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->oid, hoid->oid_len); 1660a02a946dSIlya Dryomov ceph_encode_64(p, hoid->snapid); 1661a02a946dSIlya Dryomov ceph_encode_32(p, hoid->hash); 1662a02a946dSIlya Dryomov ceph_encode_8(p, hoid->is_max); 1663a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->nspace, hoid->nspace_len); 1664a02a946dSIlya Dryomov ceph_encode_64(p, hoid->pool); 1665a02a946dSIlya Dryomov } 1666a02a946dSIlya Dryomov 1667a02a946dSIlya Dryomov static void free_hoid(struct ceph_hobject_id *hoid) 1668a02a946dSIlya Dryomov { 1669a02a946dSIlya Dryomov if (hoid) { 1670a02a946dSIlya Dryomov kfree(hoid->key); 1671a02a946dSIlya Dryomov kfree(hoid->oid); 1672a02a946dSIlya Dryomov kfree(hoid->nspace); 1673a02a946dSIlya Dryomov kfree(hoid); 1674a02a946dSIlya Dryomov } 1675a02a946dSIlya Dryomov } 1676a02a946dSIlya Dryomov 1677a02a946dSIlya Dryomov static struct ceph_osd_backoff *alloc_backoff(void) 1678a02a946dSIlya Dryomov { 1679a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1680a02a946dSIlya Dryomov 1681a02a946dSIlya Dryomov backoff = kzalloc(sizeof(*backoff), GFP_NOIO); 1682a02a946dSIlya Dryomov if (!backoff) 1683a02a946dSIlya Dryomov return NULL; 1684a02a946dSIlya Dryomov 1685a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->spg_node); 1686a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->id_node); 1687a02a946dSIlya Dryomov return backoff; 1688a02a946dSIlya Dryomov } 1689a02a946dSIlya Dryomov 1690a02a946dSIlya Dryomov static void free_backoff(struct ceph_osd_backoff *backoff) 1691a02a946dSIlya Dryomov { 1692a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->spg_node)); 1693a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->id_node)); 1694a02a946dSIlya Dryomov 1695a02a946dSIlya Dryomov free_hoid(backoff->begin); 1696a02a946dSIlya Dryomov free_hoid(backoff->end); 1697a02a946dSIlya Dryomov kfree(backoff); 1698a02a946dSIlya Dryomov } 1699a02a946dSIlya Dryomov 1700a02a946dSIlya Dryomov /* 1701a02a946dSIlya Dryomov * Within a specific spgid, backoffs are managed by ->begin hoid. 1702a02a946dSIlya Dryomov */ 1703a02a946dSIlya Dryomov DEFINE_RB_INSDEL_FUNCS2(backoff, struct ceph_osd_backoff, begin, hoid_compare, 1704a02a946dSIlya Dryomov RB_BYVAL, spg_node); 1705a02a946dSIlya Dryomov 1706a02a946dSIlya Dryomov static struct ceph_osd_backoff *lookup_containing_backoff(struct rb_root *root, 1707a02a946dSIlya Dryomov const struct ceph_hobject_id *hoid) 1708a02a946dSIlya Dryomov { 1709a02a946dSIlya Dryomov struct rb_node *n = root->rb_node; 1710a02a946dSIlya Dryomov 1711a02a946dSIlya Dryomov while (n) { 1712a02a946dSIlya Dryomov struct ceph_osd_backoff *cur = 1713a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_backoff, spg_node); 1714a02a946dSIlya Dryomov int cmp; 1715a02a946dSIlya Dryomov 1716a02a946dSIlya Dryomov cmp = hoid_compare(hoid, cur->begin); 1717a02a946dSIlya Dryomov if (cmp < 0) { 1718a02a946dSIlya Dryomov n = n->rb_left; 1719a02a946dSIlya Dryomov } else if (cmp > 0) { 1720a02a946dSIlya Dryomov if (hoid_compare(hoid, cur->end) < 0) 1721a02a946dSIlya Dryomov return cur; 1722a02a946dSIlya Dryomov 1723a02a946dSIlya Dryomov n = n->rb_right; 1724a02a946dSIlya Dryomov } else { 1725a02a946dSIlya Dryomov return cur; 1726a02a946dSIlya Dryomov } 1727a02a946dSIlya Dryomov } 1728a02a946dSIlya Dryomov 1729a02a946dSIlya Dryomov return NULL; 1730a02a946dSIlya Dryomov } 1731a02a946dSIlya Dryomov 1732a02a946dSIlya Dryomov /* 1733a02a946dSIlya Dryomov * Each backoff has a unique id within its OSD session. 1734a02a946dSIlya Dryomov */ 1735a02a946dSIlya Dryomov DEFINE_RB_FUNCS(backoff_by_id, struct ceph_osd_backoff, id, id_node) 1736a02a946dSIlya Dryomov 1737a02a946dSIlya Dryomov static void clear_backoffs(struct ceph_osd *osd) 1738a02a946dSIlya Dryomov { 1739a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&osd->o_backoff_mappings)) { 1740a02a946dSIlya Dryomov struct ceph_spg_mapping *spg = 1741a02a946dSIlya Dryomov rb_entry(rb_first(&osd->o_backoff_mappings), 1742a02a946dSIlya Dryomov struct ceph_spg_mapping, node); 1743a02a946dSIlya Dryomov 1744a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&spg->backoffs)) { 1745a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff = 1746a02a946dSIlya Dryomov rb_entry(rb_first(&spg->backoffs), 1747a02a946dSIlya Dryomov struct ceph_osd_backoff, spg_node); 1748a02a946dSIlya Dryomov 1749a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 1750a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 1751a02a946dSIlya Dryomov free_backoff(backoff); 1752a02a946dSIlya Dryomov } 1753a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 1754a02a946dSIlya Dryomov free_spg_mapping(spg); 1755a02a946dSIlya Dryomov } 1756a02a946dSIlya Dryomov } 1757a02a946dSIlya Dryomov 1758a02a946dSIlya Dryomov /* 1759a02a946dSIlya Dryomov * Set up a temporary, non-owning view into @t. 1760a02a946dSIlya Dryomov */ 1761a02a946dSIlya Dryomov static void hoid_fill_from_target(struct ceph_hobject_id *hoid, 1762a02a946dSIlya Dryomov const struct ceph_osd_request_target *t) 1763a02a946dSIlya Dryomov { 1764a02a946dSIlya Dryomov hoid->key = NULL; 1765a02a946dSIlya Dryomov hoid->key_len = 0; 1766a02a946dSIlya Dryomov hoid->oid = t->target_oid.name; 1767a02a946dSIlya Dryomov hoid->oid_len = t->target_oid.name_len; 1768a02a946dSIlya Dryomov hoid->snapid = CEPH_NOSNAP; 1769a02a946dSIlya Dryomov hoid->hash = t->pgid.seed; 1770a02a946dSIlya Dryomov hoid->is_max = false; 1771a02a946dSIlya Dryomov if (t->target_oloc.pool_ns) { 1772a02a946dSIlya Dryomov hoid->nspace = t->target_oloc.pool_ns->str; 1773a02a946dSIlya Dryomov hoid->nspace_len = t->target_oloc.pool_ns->len; 1774a02a946dSIlya Dryomov } else { 1775a02a946dSIlya Dryomov hoid->nspace = NULL; 1776a02a946dSIlya Dryomov hoid->nspace_len = 0; 1777a02a946dSIlya Dryomov } 1778a02a946dSIlya Dryomov hoid->pool = t->target_oloc.pool; 1779a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1780a02a946dSIlya Dryomov } 1781a02a946dSIlya Dryomov 1782a02a946dSIlya Dryomov static bool should_plug_request(struct ceph_osd_request *req) 1783a02a946dSIlya Dryomov { 1784a02a946dSIlya Dryomov struct ceph_osd *osd = req->r_osd; 1785a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1786a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1787a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 1788a02a946dSIlya Dryomov 1789a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &req->r_t.spgid); 1790a02a946dSIlya Dryomov if (!spg) 1791a02a946dSIlya Dryomov return false; 1792a02a946dSIlya Dryomov 1793a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, &req->r_t); 1794a02a946dSIlya Dryomov backoff = lookup_containing_backoff(&spg->backoffs, &hoid); 1795a02a946dSIlya Dryomov if (!backoff) 1796a02a946dSIlya Dryomov return false; 1797a02a946dSIlya Dryomov 1798a02a946dSIlya Dryomov dout("%s req %p tid %llu backoff osd%d spgid %llu.%xs%d id %llu\n", 1799a02a946dSIlya Dryomov __func__, req, req->r_tid, osd->o_osd, backoff->spgid.pgid.pool, 1800a02a946dSIlya Dryomov backoff->spgid.pgid.seed, backoff->spgid.shard, backoff->id); 1801a02a946dSIlya Dryomov return true; 1802a02a946dSIlya Dryomov } 1803a02a946dSIlya Dryomov 1804bb873b53SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req, 1805bb873b53SIlya Dryomov struct ceph_msg *msg) 18063d14c5d2SYehuda Sadeh { 1807bb873b53SIlya Dryomov u32 data_len = 0; 1808bb873b53SIlya Dryomov int i; 18093d14c5d2SYehuda Sadeh 1810bb873b53SIlya Dryomov if (!list_empty(&msg->data)) 1811bb873b53SIlya Dryomov return; 18123d14c5d2SYehuda Sadeh 1813bb873b53SIlya Dryomov WARN_ON(msg->data_length); 1814bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1815bb873b53SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[i]; 1816bb873b53SIlya Dryomov 1817bb873b53SIlya Dryomov switch (op->op) { 1818bb873b53SIlya Dryomov /* request */ 1819bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 1820bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 1821bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 1822bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->extent.osd_data); 1823bb873b53SIlya Dryomov break; 1824bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 1825bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 1826bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 1827bb873b53SIlya Dryomov op->xattr.value_len); 1828bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->xattr.osd_data); 1829bb873b53SIlya Dryomov break; 1830922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 1831922dab61SIlya Dryomov ceph_osdc_msg_data_add(msg, 1832922dab61SIlya Dryomov &op->notify_ack.request_data); 1833922dab61SIlya Dryomov break; 1834bb873b53SIlya Dryomov 1835bb873b53SIlya Dryomov /* reply */ 1836bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 1837bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1838bb873b53SIlya Dryomov &op->raw_data_in); 1839bb873b53SIlya Dryomov break; 1840bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 1841bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1842bb873b53SIlya Dryomov &op->extent.osd_data); 1843bb873b53SIlya Dryomov break; 1844a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 1845a4ed38d7SDouglas Fuller ceph_osdc_msg_data_add(req->r_reply, 1846a4ed38d7SDouglas Fuller &op->list_watchers.response_data); 1847a4ed38d7SDouglas Fuller break; 1848bb873b53SIlya Dryomov 1849bb873b53SIlya Dryomov /* both */ 1850bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 1851bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 1852bb873b53SIlya Dryomov op->cls.method_len + 1853bb873b53SIlya Dryomov op->cls.indata_len); 1854bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_info); 1855bb873b53SIlya Dryomov /* optional, can be NONE */ 1856bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_data); 1857bb873b53SIlya Dryomov /* optional, can be NONE */ 1858bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1859bb873b53SIlya Dryomov &op->cls.response_data); 1860bb873b53SIlya Dryomov break; 186119079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 186219079203SIlya Dryomov ceph_osdc_msg_data_add(msg, 186319079203SIlya Dryomov &op->notify.request_data); 186419079203SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 186519079203SIlya Dryomov &op->notify.response_data); 186619079203SIlya Dryomov break; 1867bb873b53SIlya Dryomov } 1868bb873b53SIlya Dryomov 1869bb873b53SIlya Dryomov data_len += op->indata_len; 1870bb873b53SIlya Dryomov } 1871bb873b53SIlya Dryomov 1872bb873b53SIlya Dryomov WARN_ON(data_len != msg->data_length); 1873bb873b53SIlya Dryomov } 1874bb873b53SIlya Dryomov 18752e59ffd1SIlya Dryomov static void encode_pgid(void **p, const struct ceph_pg *pgid) 18762e59ffd1SIlya Dryomov { 18772e59ffd1SIlya Dryomov ceph_encode_8(p, 1); 18782e59ffd1SIlya Dryomov ceph_encode_64(p, pgid->pool); 18792e59ffd1SIlya Dryomov ceph_encode_32(p, pgid->seed); 18802e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 18812e59ffd1SIlya Dryomov } 18822e59ffd1SIlya Dryomov 18838cb441c0SIlya Dryomov static void encode_spgid(void **p, const struct ceph_spg *spgid) 18848cb441c0SIlya Dryomov { 18858cb441c0SIlya Dryomov ceph_start_encoding(p, 1, 1, CEPH_PGID_ENCODING_LEN + 1); 18868cb441c0SIlya Dryomov encode_pgid(p, &spgid->pgid); 18878cb441c0SIlya Dryomov ceph_encode_8(p, spgid->shard); 18888cb441c0SIlya Dryomov } 18898cb441c0SIlya Dryomov 18902e59ffd1SIlya Dryomov static void encode_oloc(void **p, void *end, 18912e59ffd1SIlya Dryomov const struct ceph_object_locator *oloc) 18922e59ffd1SIlya Dryomov { 18932e59ffd1SIlya Dryomov ceph_start_encoding(p, 5, 4, ceph_oloc_encoding_size(oloc)); 18942e59ffd1SIlya Dryomov ceph_encode_64(p, oloc->pool); 18952e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 18962e59ffd1SIlya Dryomov ceph_encode_32(p, 0); /* key len */ 18972e59ffd1SIlya Dryomov if (oloc->pool_ns) 18982e59ffd1SIlya Dryomov ceph_encode_string(p, end, oloc->pool_ns->str, 18992e59ffd1SIlya Dryomov oloc->pool_ns->len); 19002e59ffd1SIlya Dryomov else 19012e59ffd1SIlya Dryomov ceph_encode_32(p, 0); 19022e59ffd1SIlya Dryomov } 19032e59ffd1SIlya Dryomov 19048cb441c0SIlya Dryomov static void encode_request_partial(struct ceph_osd_request *req, 19058cb441c0SIlya Dryomov struct ceph_msg *msg) 1906bb873b53SIlya Dryomov { 1907bb873b53SIlya Dryomov void *p = msg->front.iov_base; 1908bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 1909bb873b53SIlya Dryomov u32 data_len = 0; 1910bb873b53SIlya Dryomov int i; 1911bb873b53SIlya Dryomov 1912bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 1913bb873b53SIlya Dryomov /* snapshots aren't writeable */ 1914bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 1915bb873b53SIlya Dryomov } else { 1916bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 1917bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 1918bb873b53SIlya Dryomov } 1919bb873b53SIlya Dryomov 1920bb873b53SIlya Dryomov setup_request_data(req, msg); 1921bb873b53SIlya Dryomov 19228cb441c0SIlya Dryomov encode_spgid(&p, &req->r_t.spgid); /* actual spg */ 19238cb441c0SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); /* raw hash */ 1924bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 1925bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 19268cb441c0SIlya Dryomov 19278cb441c0SIlya Dryomov /* reqid */ 19288cb441c0SIlya Dryomov ceph_start_encoding(&p, 2, 2, sizeof(struct ceph_osd_reqid)); 19298cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_osd_reqid)); 19308cb441c0SIlya Dryomov p += sizeof(struct ceph_osd_reqid); 19318cb441c0SIlya Dryomov 19328cb441c0SIlya Dryomov /* trace */ 19338cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_blkin_trace_info)); 19348cb441c0SIlya Dryomov p += sizeof(struct ceph_blkin_trace_info); 19358cb441c0SIlya Dryomov 19368cb441c0SIlya Dryomov ceph_encode_32(&p, 0); /* client_inc, always 0 */ 1937bb873b53SIlya Dryomov ceph_encode_timespec(p, &req->r_mtime); 1938bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 1939aa26d662SJeff Layton 19402e59ffd1SIlya Dryomov encode_oloc(&p, end, &req->r_t.target_oloc); 19412e59ffd1SIlya Dryomov ceph_encode_string(&p, end, req->r_t.target_oid.name, 19422e59ffd1SIlya Dryomov req->r_t.target_oid.name_len); 1943bb873b53SIlya Dryomov 1944bb873b53SIlya Dryomov /* ops, can imply data */ 1945bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 1946bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1947bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 1948bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 1949bb873b53SIlya Dryomov } 1950bb873b53SIlya Dryomov 1951bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 1952bb873b53SIlya Dryomov if (req->r_snapc) { 1953bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 1954bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 1955bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 1956bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 1957bb873b53SIlya Dryomov } else { 1958bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 1959bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 1960bb873b53SIlya Dryomov } 1961bb873b53SIlya Dryomov 1962bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 1963986e8989SIlya Dryomov BUG_ON(p > end - 8); /* space for features */ 1964bb873b53SIlya Dryomov 19658cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(8); /* MOSDOp v8 */ 19668cb441c0SIlya Dryomov /* front_len is finalized in encode_request_finish() */ 1967986e8989SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 1968986e8989SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 1969bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 1970bb873b53SIlya Dryomov /* 1971bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 1972bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 1973bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 1974bb873b53SIlya Dryomov */ 1975bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 1976bb873b53SIlya Dryomov 19778cb441c0SIlya Dryomov dout("%s req %p msg %p oid %s oid_len %d\n", __func__, req, msg, 19788cb441c0SIlya Dryomov req->r_t.target_oid.name, req->r_t.target_oid.name_len); 19798cb441c0SIlya Dryomov } 19808cb441c0SIlya Dryomov 19818cb441c0SIlya Dryomov static void encode_request_finish(struct ceph_msg *msg) 19828cb441c0SIlya Dryomov { 19838cb441c0SIlya Dryomov void *p = msg->front.iov_base; 1984986e8989SIlya Dryomov void *const partial_end = p + msg->front.iov_len; 19858cb441c0SIlya Dryomov void *const end = p + msg->front_alloc_len; 19868cb441c0SIlya Dryomov 19878cb441c0SIlya Dryomov if (CEPH_HAVE_FEATURE(msg->con->peer_features, RESEND_ON_SPLIT)) { 19888cb441c0SIlya Dryomov /* luminous OSD -- encode features and be done */ 1989986e8989SIlya Dryomov p = partial_end; 19908cb441c0SIlya Dryomov ceph_encode_64(&p, msg->con->peer_features); 19918cb441c0SIlya Dryomov } else { 19928cb441c0SIlya Dryomov struct { 19938cb441c0SIlya Dryomov char spgid[CEPH_ENCODING_START_BLK_LEN + 19948cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1]; 19958cb441c0SIlya Dryomov __le32 hash; 19968cb441c0SIlya Dryomov __le32 epoch; 19978cb441c0SIlya Dryomov __le32 flags; 19988cb441c0SIlya Dryomov char reqid[CEPH_ENCODING_START_BLK_LEN + 19998cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid)]; 20008cb441c0SIlya Dryomov char trace[sizeof(struct ceph_blkin_trace_info)]; 20018cb441c0SIlya Dryomov __le32 client_inc; 20028cb441c0SIlya Dryomov struct ceph_timespec mtime; 20038cb441c0SIlya Dryomov } __packed head; 20048cb441c0SIlya Dryomov struct ceph_pg pgid; 20058cb441c0SIlya Dryomov void *oloc, *oid, *tail; 20068cb441c0SIlya Dryomov int oloc_len, oid_len, tail_len; 20078cb441c0SIlya Dryomov int len; 20088cb441c0SIlya Dryomov 20098cb441c0SIlya Dryomov /* 20108cb441c0SIlya Dryomov * Pre-luminous OSD -- reencode v8 into v4 using @head 20118cb441c0SIlya Dryomov * as a temporary buffer. Encode the raw PG; the rest 20128cb441c0SIlya Dryomov * is just a matter of moving oloc, oid and tail blobs 20138cb441c0SIlya Dryomov * around. 20148cb441c0SIlya Dryomov */ 20158cb441c0SIlya Dryomov memcpy(&head, p, sizeof(head)); 20168cb441c0SIlya Dryomov p += sizeof(head); 20178cb441c0SIlya Dryomov 20188cb441c0SIlya Dryomov oloc = p; 20198cb441c0SIlya Dryomov p += CEPH_ENCODING_START_BLK_LEN; 20208cb441c0SIlya Dryomov pgid.pool = ceph_decode_64(&p); 20218cb441c0SIlya Dryomov p += 4 + 4; /* preferred, key len */ 20228cb441c0SIlya Dryomov len = ceph_decode_32(&p); 20238cb441c0SIlya Dryomov p += len; /* nspace */ 20248cb441c0SIlya Dryomov oloc_len = p - oloc; 20258cb441c0SIlya Dryomov 20268cb441c0SIlya Dryomov oid = p; 20278cb441c0SIlya Dryomov len = ceph_decode_32(&p); 20288cb441c0SIlya Dryomov p += len; 20298cb441c0SIlya Dryomov oid_len = p - oid; 20308cb441c0SIlya Dryomov 20318cb441c0SIlya Dryomov tail = p; 2032986e8989SIlya Dryomov tail_len = partial_end - p; 20338cb441c0SIlya Dryomov 20348cb441c0SIlya Dryomov p = msg->front.iov_base; 20358cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.client_inc, sizeof(head.client_inc)); 20368cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.epoch, sizeof(head.epoch)); 20378cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.flags, sizeof(head.flags)); 20388cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.mtime, sizeof(head.mtime)); 20398cb441c0SIlya Dryomov 20408cb441c0SIlya Dryomov /* reassert_version */ 20418cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_eversion)); 20428cb441c0SIlya Dryomov p += sizeof(struct ceph_eversion); 20438cb441c0SIlya Dryomov 20448cb441c0SIlya Dryomov BUG_ON(p >= oloc); 20458cb441c0SIlya Dryomov memmove(p, oloc, oloc_len); 20468cb441c0SIlya Dryomov p += oloc_len; 20478cb441c0SIlya Dryomov 20488cb441c0SIlya Dryomov pgid.seed = le32_to_cpu(head.hash); 20498cb441c0SIlya Dryomov encode_pgid(&p, &pgid); /* raw pg */ 20508cb441c0SIlya Dryomov 20518cb441c0SIlya Dryomov BUG_ON(p >= oid); 20528cb441c0SIlya Dryomov memmove(p, oid, oid_len); 20538cb441c0SIlya Dryomov p += oid_len; 20548cb441c0SIlya Dryomov 20558cb441c0SIlya Dryomov /* tail -- ops, snapid, snapc, retry_attempt */ 20568cb441c0SIlya Dryomov BUG_ON(p >= tail); 20578cb441c0SIlya Dryomov memmove(p, tail, tail_len); 20588cb441c0SIlya Dryomov p += tail_len; 20598cb441c0SIlya Dryomov 20608cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 20618cb441c0SIlya Dryomov } 20628cb441c0SIlya Dryomov 20638cb441c0SIlya Dryomov BUG_ON(p > end); 20648cb441c0SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 20658cb441c0SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 20668cb441c0SIlya Dryomov 20678cb441c0SIlya Dryomov dout("%s msg %p tid %llu %u+%u+%u v%d\n", __func__, msg, 20688cb441c0SIlya Dryomov le64_to_cpu(msg->hdr.tid), le32_to_cpu(msg->hdr.front_len), 20698cb441c0SIlya Dryomov le32_to_cpu(msg->hdr.middle_len), le32_to_cpu(msg->hdr.data_len), 20708cb441c0SIlya Dryomov le16_to_cpu(msg->hdr.version)); 2071bb873b53SIlya Dryomov } 2072bb873b53SIlya Dryomov 2073bb873b53SIlya Dryomov /* 2074bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 2075bb873b53SIlya Dryomov */ 2076bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 2077bb873b53SIlya Dryomov { 2078bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 2079bb873b53SIlya Dryomov 20805aea3dcdSIlya Dryomov verify_osd_locked(osd); 2081bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 2082bb873b53SIlya Dryomov 2083a02a946dSIlya Dryomov /* backoff? */ 2084a02a946dSIlya Dryomov if (should_plug_request(req)) 2085a02a946dSIlya Dryomov return; 2086a02a946dSIlya Dryomov 20875aea3dcdSIlya Dryomov /* 20885aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 20895aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 20905aea3dcdSIlya Dryomov */ 20915aea3dcdSIlya Dryomov if (req->r_sent) 20925aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 20935aea3dcdSIlya Dryomov 2094bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 2095bb873b53SIlya Dryomov if (req->r_attempts) 2096bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 2097bb873b53SIlya Dryomov else 2098bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 2099bb873b53SIlya Dryomov 21008cb441c0SIlya Dryomov encode_request_partial(req, req->r_request); 2101bb873b53SIlya Dryomov 210204c7d789SIlya 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", 2103bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 2104dc98ff72SIlya Dryomov req->r_t.spgid.pgid.pool, req->r_t.spgid.pgid.seed, 210504c7d789SIlya Dryomov req->r_t.spgid.shard, osd->o_osd, req->r_t.epoch, req->r_flags, 210604c7d789SIlya Dryomov req->r_attempts); 2107bb873b53SIlya Dryomov 2108bb873b53SIlya Dryomov req->r_t.paused = false; 21093d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 2110bb873b53SIlya Dryomov req->r_attempts++; 21113d14c5d2SYehuda Sadeh 2112bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 2113bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 2114bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 21153d14c5d2SYehuda Sadeh } 21163d14c5d2SYehuda Sadeh 211742c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 211842c1b124SIlya Dryomov { 211942c1b124SIlya Dryomov bool continuous = false; 212042c1b124SIlya Dryomov 21215aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 212242c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 212342c1b124SIlya Dryomov 2124b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2125b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || 2126b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 212742c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 212842c1b124SIlya Dryomov continuous = true; 212942c1b124SIlya Dryomov } else { 213042c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 213142c1b124SIlya Dryomov } 213242c1b124SIlya Dryomov 213342c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 213442c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 213542c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 213642c1b124SIlya Dryomov } 213742c1b124SIlya Dryomov 2138a1f4020aSJeff Layton static void complete_request(struct ceph_osd_request *req, int err); 21394609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req); 21404609245eSIlya Dryomov 21415aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 21420bbfdfe8SIlya Dryomov { 21435aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 21445aea3dcdSIlya Dryomov struct ceph_osd *osd; 21454609245eSIlya Dryomov enum calc_target_result ct_res; 21465aea3dcdSIlya Dryomov bool need_send = false; 21475aea3dcdSIlya Dryomov bool promoted = false; 2148a1f4020aSJeff Layton bool need_abort = false; 21490bbfdfe8SIlya Dryomov 2150b18b9550SIlya Dryomov WARN_ON(req->r_tid); 21515aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 21525aea3dcdSIlya Dryomov 21535aea3dcdSIlya Dryomov again: 21547de030d6SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, NULL, false); 21554609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) 21564609245eSIlya Dryomov goto promote; 21574609245eSIlya Dryomov 21585aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 21595aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 21605aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 21615aea3dcdSIlya Dryomov goto promote; 21625aea3dcdSIlya Dryomov } 21635aea3dcdSIlya Dryomov 216458eb7932SJeff Layton if (osdc->osdmap->epoch < osdc->epoch_barrier) { 216558eb7932SJeff Layton dout("req %p epoch %u barrier %u\n", req, osdc->osdmap->epoch, 216658eb7932SJeff Layton osdc->epoch_barrier); 216758eb7932SJeff Layton req->r_t.paused = true; 216858eb7932SJeff Layton maybe_request_map(osdc); 216958eb7932SJeff Layton } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 2170b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 21715aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 21725aea3dcdSIlya Dryomov req->r_t.paused = true; 21735aea3dcdSIlya Dryomov maybe_request_map(osdc); 21745aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 2175b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 21765aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 21775aea3dcdSIlya Dryomov req->r_t.paused = true; 21785aea3dcdSIlya Dryomov maybe_request_map(osdc); 21795aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 21805aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 21815aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 2182b7ec35b3SIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 21835aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 21845aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 21855aea3dcdSIlya Dryomov pr_warn_ratelimited("FULL or reached pool quota\n"); 21865aea3dcdSIlya Dryomov req->r_t.paused = true; 21875aea3dcdSIlya Dryomov maybe_request_map(osdc); 2188a1f4020aSJeff Layton if (req->r_abort_on_full) 2189a1f4020aSJeff Layton need_abort = true; 21905aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 21915aea3dcdSIlya Dryomov need_send = true; 21920bbfdfe8SIlya Dryomov } else { 21935aea3dcdSIlya Dryomov maybe_request_map(osdc); 21940bbfdfe8SIlya Dryomov } 21950bbfdfe8SIlya Dryomov 21965aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 21975aea3dcdSIlya Dryomov /* 21985aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 21995aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 22005aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 22015aea3dcdSIlya Dryomov */ 22025aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 22035aea3dcdSIlya Dryomov link_request(osd, req); 22045aea3dcdSIlya Dryomov if (need_send) 22055aea3dcdSIlya Dryomov send_request(req); 2206a1f4020aSJeff Layton else if (need_abort) 2207a1f4020aSJeff Layton complete_request(req, -ENOSPC); 22085aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 22095aea3dcdSIlya Dryomov 22104609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) 22114609245eSIlya Dryomov send_map_check(req); 22124609245eSIlya Dryomov 22135aea3dcdSIlya Dryomov if (promoted) 22145aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 22155aea3dcdSIlya Dryomov return; 22165aea3dcdSIlya Dryomov 22175aea3dcdSIlya Dryomov promote: 22185aea3dcdSIlya Dryomov up_read(&osdc->lock); 22195aea3dcdSIlya Dryomov down_write(&osdc->lock); 22205aea3dcdSIlya Dryomov wrlocked = true; 22215aea3dcdSIlya Dryomov promoted = true; 22225aea3dcdSIlya Dryomov goto again; 22230bbfdfe8SIlya Dryomov } 22240bbfdfe8SIlya Dryomov 22255aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 22265aea3dcdSIlya Dryomov { 222754ea0046SIlya Dryomov WARN_ON(req->r_flags & (CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK)); 2228b18b9550SIlya Dryomov WARN_ON(!(req->r_flags & (CEPH_OSD_FLAG_READ | CEPH_OSD_FLAG_WRITE))); 22295aea3dcdSIlya Dryomov 2230b18b9550SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ONDISK; 22315aea3dcdSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 22327cc5e38fSIlya Dryomov 22337cc5e38fSIlya Dryomov req->r_start_stamp = jiffies; 22345aea3dcdSIlya Dryomov } 22355aea3dcdSIlya Dryomov 22365aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 22375aea3dcdSIlya Dryomov { 22385aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 22395aea3dcdSIlya Dryomov account_request(req); 22405aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 22415aea3dcdSIlya Dryomov } 22425aea3dcdSIlya Dryomov 224345ee2c1dSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 22445aea3dcdSIlya Dryomov { 22455aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 22465aea3dcdSIlya Dryomov 22474609245eSIlya Dryomov WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); 224804c7d789SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 224904c7d789SIlya Dryomov 225004c7d789SIlya Dryomov if (req->r_osd) 225104c7d789SIlya Dryomov unlink_request(req->r_osd, req); 22525aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 22535aea3dcdSIlya Dryomov 22545aea3dcdSIlya Dryomov /* 22555aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 22565aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 22575aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 22585aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 22595aea3dcdSIlya Dryomov */ 22605aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 22615aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 22625aea3dcdSIlya Dryomov } 22635aea3dcdSIlya Dryomov 2264fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 2265fe5da05eSIlya Dryomov { 2266b18b9550SIlya Dryomov if (req->r_callback) { 2267b18b9550SIlya Dryomov dout("%s req %p tid %llu cb %pf result %d\n", __func__, req, 2268b18b9550SIlya Dryomov req->r_tid, req->r_callback, req->r_result); 2269fe5da05eSIlya Dryomov req->r_callback(req); 2270b18b9550SIlya Dryomov } 2271fe5da05eSIlya Dryomov } 2272fe5da05eSIlya Dryomov 22734609245eSIlya Dryomov /* 2274b18b9550SIlya Dryomov * This is open-coded in handle_reply(). 22754609245eSIlya Dryomov */ 22764609245eSIlya Dryomov static void complete_request(struct ceph_osd_request *req, int err) 22774609245eSIlya Dryomov { 22784609245eSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 22794609245eSIlya Dryomov 22804609245eSIlya Dryomov req->r_result = err; 228145ee2c1dSIlya Dryomov finish_request(req); 22824609245eSIlya Dryomov __complete_request(req); 2283b18b9550SIlya Dryomov complete_all(&req->r_completion); 22844609245eSIlya Dryomov ceph_osdc_put_request(req); 22854609245eSIlya Dryomov } 22864609245eSIlya Dryomov 22874609245eSIlya Dryomov static void cancel_map_check(struct ceph_osd_request *req) 22884609245eSIlya Dryomov { 22894609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 22904609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 22914609245eSIlya Dryomov 22924609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 22934609245eSIlya Dryomov 22944609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 22954609245eSIlya Dryomov if (!lookup_req) 22964609245eSIlya Dryomov return; 22974609245eSIlya Dryomov 22984609245eSIlya Dryomov WARN_ON(lookup_req != req); 22994609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 23004609245eSIlya Dryomov ceph_osdc_put_request(req); 23014609245eSIlya Dryomov } 23024609245eSIlya Dryomov 23035aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 23045aea3dcdSIlya Dryomov { 23055aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 23065aea3dcdSIlya Dryomov 23074609245eSIlya Dryomov cancel_map_check(req); 230845ee2c1dSIlya Dryomov finish_request(req); 2309b18b9550SIlya Dryomov complete_all(&req->r_completion); 2310c297eb42SIlya Dryomov ceph_osdc_put_request(req); 23115aea3dcdSIlya Dryomov } 23125aea3dcdSIlya Dryomov 23137cc5e38fSIlya Dryomov static void abort_request(struct ceph_osd_request *req, int err) 23147cc5e38fSIlya Dryomov { 23157cc5e38fSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 23167cc5e38fSIlya Dryomov 23177cc5e38fSIlya Dryomov cancel_map_check(req); 23187cc5e38fSIlya Dryomov complete_request(req, err); 23197cc5e38fSIlya Dryomov } 23207cc5e38fSIlya Dryomov 232158eb7932SJeff Layton static void update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 232258eb7932SJeff Layton { 232358eb7932SJeff Layton if (likely(eb > osdc->epoch_barrier)) { 232458eb7932SJeff Layton dout("updating epoch_barrier from %u to %u\n", 232558eb7932SJeff Layton osdc->epoch_barrier, eb); 232658eb7932SJeff Layton osdc->epoch_barrier = eb; 232758eb7932SJeff Layton /* Request map if we're not to the barrier yet */ 232858eb7932SJeff Layton if (eb > osdc->osdmap->epoch) 232958eb7932SJeff Layton maybe_request_map(osdc); 233058eb7932SJeff Layton } 233158eb7932SJeff Layton } 233258eb7932SJeff Layton 233358eb7932SJeff Layton void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 233458eb7932SJeff Layton { 233558eb7932SJeff Layton down_read(&osdc->lock); 233658eb7932SJeff Layton if (unlikely(eb > osdc->epoch_barrier)) { 233758eb7932SJeff Layton up_read(&osdc->lock); 233858eb7932SJeff Layton down_write(&osdc->lock); 233958eb7932SJeff Layton update_epoch_barrier(osdc, eb); 234058eb7932SJeff Layton up_write(&osdc->lock); 234158eb7932SJeff Layton } else { 234258eb7932SJeff Layton up_read(&osdc->lock); 234358eb7932SJeff Layton } 234458eb7932SJeff Layton } 234558eb7932SJeff Layton EXPORT_SYMBOL(ceph_osdc_update_epoch_barrier); 234658eb7932SJeff Layton 2347fc36d0a4SJeff Layton /* 2348fc36d0a4SJeff Layton * Drop all pending requests that are stalled waiting on a full condition to 234958eb7932SJeff Layton * clear, and complete them with ENOSPC as the return code. Set the 235058eb7932SJeff Layton * osdc->epoch_barrier to the latest map epoch that we've seen if any were 235158eb7932SJeff Layton * cancelled. 2352fc36d0a4SJeff Layton */ 2353fc36d0a4SJeff Layton static void ceph_osdc_abort_on_full(struct ceph_osd_client *osdc) 2354fc36d0a4SJeff Layton { 2355fc36d0a4SJeff Layton struct rb_node *n; 235658eb7932SJeff Layton bool victims = false; 2357fc36d0a4SJeff Layton 2358fc36d0a4SJeff Layton dout("enter abort_on_full\n"); 2359fc36d0a4SJeff Layton 2360fc36d0a4SJeff Layton if (!ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) && !have_pool_full(osdc)) 2361fc36d0a4SJeff Layton goto out; 2362fc36d0a4SJeff Layton 236358eb7932SJeff Layton /* Scan list and see if there is anything to abort */ 236458eb7932SJeff Layton for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 236558eb7932SJeff Layton struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 236658eb7932SJeff Layton struct rb_node *m; 236758eb7932SJeff Layton 236858eb7932SJeff Layton m = rb_first(&osd->o_requests); 236958eb7932SJeff Layton while (m) { 237058eb7932SJeff Layton struct ceph_osd_request *req = rb_entry(m, 237158eb7932SJeff Layton struct ceph_osd_request, r_node); 237258eb7932SJeff Layton m = rb_next(m); 237358eb7932SJeff Layton 237458eb7932SJeff Layton if (req->r_abort_on_full) { 237558eb7932SJeff Layton victims = true; 237658eb7932SJeff Layton break; 237758eb7932SJeff Layton } 237858eb7932SJeff Layton } 237958eb7932SJeff Layton if (victims) 238058eb7932SJeff Layton break; 238158eb7932SJeff Layton } 238258eb7932SJeff Layton 238358eb7932SJeff Layton if (!victims) 238458eb7932SJeff Layton goto out; 238558eb7932SJeff Layton 238658eb7932SJeff Layton /* 238758eb7932SJeff Layton * Update the barrier to current epoch if it's behind that point, 238858eb7932SJeff Layton * since we know we have some calls to be aborted in the tree. 238958eb7932SJeff Layton */ 239058eb7932SJeff Layton update_epoch_barrier(osdc, osdc->osdmap->epoch); 239158eb7932SJeff Layton 2392fc36d0a4SJeff Layton for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 2393fc36d0a4SJeff Layton struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 2394fc36d0a4SJeff Layton struct rb_node *m; 2395fc36d0a4SJeff Layton 2396fc36d0a4SJeff Layton m = rb_first(&osd->o_requests); 2397fc36d0a4SJeff Layton while (m) { 2398fc36d0a4SJeff Layton struct ceph_osd_request *req = rb_entry(m, 2399fc36d0a4SJeff Layton struct ceph_osd_request, r_node); 2400fc36d0a4SJeff Layton m = rb_next(m); 2401fc36d0a4SJeff Layton 2402fc36d0a4SJeff Layton if (req->r_abort_on_full && 2403fc36d0a4SJeff Layton (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2404fc36d0a4SJeff Layton pool_full(osdc, req->r_t.target_oloc.pool))) 2405fc36d0a4SJeff Layton abort_request(req, -ENOSPC); 2406fc36d0a4SJeff Layton } 2407fc36d0a4SJeff Layton } 2408fc36d0a4SJeff Layton out: 240958eb7932SJeff Layton dout("return abort_on_full barrier=%u\n", osdc->epoch_barrier); 2410fc36d0a4SJeff Layton } 2411fc36d0a4SJeff Layton 24124609245eSIlya Dryomov static void check_pool_dne(struct ceph_osd_request *req) 24134609245eSIlya Dryomov { 24144609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 24154609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 24164609245eSIlya Dryomov 24174609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 24184609245eSIlya Dryomov WARN_ON(!map->epoch); 24194609245eSIlya Dryomov 24204609245eSIlya Dryomov if (req->r_attempts) { 24214609245eSIlya Dryomov /* 24224609245eSIlya Dryomov * We sent a request earlier, which means that 24234609245eSIlya Dryomov * previously the pool existed, and now it does not 24244609245eSIlya Dryomov * (i.e., it was deleted). 24254609245eSIlya Dryomov */ 24264609245eSIlya Dryomov req->r_map_dne_bound = map->epoch; 24274609245eSIlya Dryomov dout("%s req %p tid %llu pool disappeared\n", __func__, req, 24284609245eSIlya Dryomov req->r_tid); 24294609245eSIlya Dryomov } else { 24304609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, 24314609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, map->epoch); 24324609245eSIlya Dryomov } 24334609245eSIlya Dryomov 24344609245eSIlya Dryomov if (req->r_map_dne_bound) { 24354609245eSIlya Dryomov if (map->epoch >= req->r_map_dne_bound) { 24364609245eSIlya Dryomov /* we had a new enough map */ 24374609245eSIlya Dryomov pr_info_ratelimited("tid %llu pool does not exist\n", 24384609245eSIlya Dryomov req->r_tid); 24394609245eSIlya Dryomov complete_request(req, -ENOENT); 24404609245eSIlya Dryomov } 24414609245eSIlya Dryomov } else { 24424609245eSIlya Dryomov send_map_check(req); 24434609245eSIlya Dryomov } 24444609245eSIlya Dryomov } 24454609245eSIlya Dryomov 24464609245eSIlya Dryomov static void map_check_cb(struct ceph_mon_generic_request *greq) 24474609245eSIlya Dryomov { 24484609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 24494609245eSIlya Dryomov struct ceph_osd_request *req; 24504609245eSIlya Dryomov u64 tid = greq->private_data; 24514609245eSIlya Dryomov 24524609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 24534609245eSIlya Dryomov 24544609245eSIlya Dryomov down_write(&osdc->lock); 24554609245eSIlya Dryomov req = lookup_request_mc(&osdc->map_checks, tid); 24564609245eSIlya Dryomov if (!req) { 24574609245eSIlya Dryomov dout("%s tid %llu dne\n", __func__, tid); 24584609245eSIlya Dryomov goto out_unlock; 24594609245eSIlya Dryomov } 24604609245eSIlya Dryomov 24614609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, 24624609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, greq->u.newest); 24634609245eSIlya Dryomov if (!req->r_map_dne_bound) 24644609245eSIlya Dryomov req->r_map_dne_bound = greq->u.newest; 24654609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 24664609245eSIlya Dryomov check_pool_dne(req); 24674609245eSIlya Dryomov 24684609245eSIlya Dryomov ceph_osdc_put_request(req); 24694609245eSIlya Dryomov out_unlock: 24704609245eSIlya Dryomov up_write(&osdc->lock); 24714609245eSIlya Dryomov } 24724609245eSIlya Dryomov 24734609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req) 24744609245eSIlya Dryomov { 24754609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 24764609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 24774609245eSIlya Dryomov int ret; 24784609245eSIlya Dryomov 24794609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 24804609245eSIlya Dryomov 24814609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 24824609245eSIlya Dryomov if (lookup_req) { 24834609245eSIlya Dryomov WARN_ON(lookup_req != req); 24844609245eSIlya Dryomov return; 24854609245eSIlya Dryomov } 24864609245eSIlya Dryomov 24874609245eSIlya Dryomov ceph_osdc_get_request(req); 24884609245eSIlya Dryomov insert_request_mc(&osdc->map_checks, req); 24894609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 24904609245eSIlya Dryomov map_check_cb, req->r_tid); 24914609245eSIlya Dryomov WARN_ON(ret); 24924609245eSIlya Dryomov } 24934609245eSIlya Dryomov 24940bbfdfe8SIlya Dryomov /* 2495922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 2496922dab61SIlya Dryomov */ 2497922dab61SIlya Dryomov static void linger_release(struct kref *kref) 2498922dab61SIlya Dryomov { 2499922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2500922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 2501922dab61SIlya Dryomov 2502922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 2503922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 2504922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 2505922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 25064609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); 2507922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 2508b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lreq->pending_lworks)); 2509922dab61SIlya Dryomov WARN_ON(lreq->osd); 2510922dab61SIlya Dryomov 2511922dab61SIlya Dryomov if (lreq->reg_req) 2512922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 2513922dab61SIlya Dryomov if (lreq->ping_req) 2514922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 2515922dab61SIlya Dryomov target_destroy(&lreq->t); 2516922dab61SIlya Dryomov kfree(lreq); 2517922dab61SIlya Dryomov } 2518922dab61SIlya Dryomov 2519922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 2520922dab61SIlya Dryomov { 2521922dab61SIlya Dryomov if (lreq) 2522922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 2523922dab61SIlya Dryomov } 2524922dab61SIlya Dryomov 2525922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2526922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 2527922dab61SIlya Dryomov { 2528922dab61SIlya Dryomov kref_get(&lreq->kref); 2529922dab61SIlya Dryomov return lreq; 2530922dab61SIlya Dryomov } 2531922dab61SIlya Dryomov 2532922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2533922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 2534922dab61SIlya Dryomov { 2535922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2536922dab61SIlya Dryomov 2537922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 2538922dab61SIlya Dryomov if (!lreq) 2539922dab61SIlya Dryomov return NULL; 2540922dab61SIlya Dryomov 2541922dab61SIlya Dryomov kref_init(&lreq->kref); 2542922dab61SIlya Dryomov mutex_init(&lreq->lock); 2543922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 2544922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 25454609245eSIlya Dryomov RB_CLEAR_NODE(&lreq->mc_node); 2546922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 2547b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lreq->pending_lworks); 2548922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 254919079203SIlya Dryomov init_completion(&lreq->notify_finish_wait); 2550922dab61SIlya Dryomov 2551922dab61SIlya Dryomov lreq->osdc = osdc; 2552922dab61SIlya Dryomov target_init(&lreq->t); 2553922dab61SIlya Dryomov 2554922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 2555922dab61SIlya Dryomov return lreq; 2556922dab61SIlya Dryomov } 2557922dab61SIlya Dryomov 2558922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 2559922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 25604609245eSIlya Dryomov DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) 2561922dab61SIlya Dryomov 2562922dab61SIlya Dryomov /* 2563922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 2564922dab61SIlya Dryomov * 2565922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 2566922dab61SIlya Dryomov */ 2567922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 2568922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2569922dab61SIlya Dryomov { 2570922dab61SIlya Dryomov verify_osd_locked(osd); 2571922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 2572922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2573922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2574922dab61SIlya Dryomov 2575922dab61SIlya Dryomov if (!osd_homeless(osd)) 2576922dab61SIlya Dryomov __remove_osd_from_lru(osd); 2577922dab61SIlya Dryomov else 2578922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 2579922dab61SIlya Dryomov 2580922dab61SIlya Dryomov get_osd(osd); 2581922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 2582922dab61SIlya Dryomov lreq->osd = osd; 2583922dab61SIlya Dryomov } 2584922dab61SIlya Dryomov 2585922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 2586922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2587922dab61SIlya Dryomov { 2588922dab61SIlya Dryomov verify_osd_locked(osd); 2589922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 2590922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2591922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2592922dab61SIlya Dryomov 2593922dab61SIlya Dryomov lreq->osd = NULL; 2594922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 2595922dab61SIlya Dryomov put_osd(osd); 2596922dab61SIlya Dryomov 2597922dab61SIlya Dryomov if (!osd_homeless(osd)) 2598922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 2599922dab61SIlya Dryomov else 2600922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 2601922dab61SIlya Dryomov } 2602922dab61SIlya Dryomov 2603922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 2604922dab61SIlya Dryomov { 2605922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 2606922dab61SIlya Dryomov 2607922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 2608922dab61SIlya Dryomov } 2609922dab61SIlya Dryomov 2610922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 2611922dab61SIlya Dryomov { 2612922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2613922dab61SIlya Dryomov bool registered; 2614922dab61SIlya Dryomov 2615922dab61SIlya Dryomov down_read(&osdc->lock); 2616922dab61SIlya Dryomov registered = __linger_registered(lreq); 2617922dab61SIlya Dryomov up_read(&osdc->lock); 2618922dab61SIlya Dryomov 2619922dab61SIlya Dryomov return registered; 2620922dab61SIlya Dryomov } 2621922dab61SIlya Dryomov 2622922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 2623922dab61SIlya Dryomov { 2624922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2625922dab61SIlya Dryomov 2626922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2627922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 2628922dab61SIlya Dryomov 2629922dab61SIlya Dryomov linger_get(lreq); 2630922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 2631922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 2632922dab61SIlya Dryomov } 2633922dab61SIlya Dryomov 2634922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 2635922dab61SIlya Dryomov { 2636922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2637922dab61SIlya Dryomov 2638922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2639922dab61SIlya Dryomov 2640922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 2641922dab61SIlya Dryomov linger_put(lreq); 2642922dab61SIlya Dryomov } 2643922dab61SIlya Dryomov 2644922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 2645922dab61SIlya Dryomov { 2646922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2647922dab61SIlya Dryomov 2648922dab61SIlya Dryomov WARN_ON(!req->r_linger); 2649922dab61SIlya Dryomov cancel_request(req); 2650922dab61SIlya Dryomov linger_put(lreq); 2651922dab61SIlya Dryomov } 2652922dab61SIlya Dryomov 2653922dab61SIlya Dryomov struct linger_work { 2654922dab61SIlya Dryomov struct work_struct work; 2655922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2656b07d3c4bSIlya Dryomov struct list_head pending_item; 2657b07d3c4bSIlya Dryomov unsigned long queued_stamp; 2658922dab61SIlya Dryomov 2659922dab61SIlya Dryomov union { 2660922dab61SIlya Dryomov struct { 2661922dab61SIlya Dryomov u64 notify_id; 2662922dab61SIlya Dryomov u64 notifier_id; 2663922dab61SIlya Dryomov void *payload; /* points into @msg front */ 2664922dab61SIlya Dryomov size_t payload_len; 2665922dab61SIlya Dryomov 2666922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 2667922dab61SIlya Dryomov } notify; 2668922dab61SIlya Dryomov struct { 2669922dab61SIlya Dryomov int err; 2670922dab61SIlya Dryomov } error; 2671922dab61SIlya Dryomov }; 2672922dab61SIlya Dryomov }; 2673922dab61SIlya Dryomov 2674922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 2675922dab61SIlya Dryomov work_func_t workfn) 2676922dab61SIlya Dryomov { 2677922dab61SIlya Dryomov struct linger_work *lwork; 2678922dab61SIlya Dryomov 2679922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 2680922dab61SIlya Dryomov if (!lwork) 2681922dab61SIlya Dryomov return NULL; 2682922dab61SIlya Dryomov 2683922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 2684b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lwork->pending_item); 2685922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 2686922dab61SIlya Dryomov 2687922dab61SIlya Dryomov return lwork; 2688922dab61SIlya Dryomov } 2689922dab61SIlya Dryomov 2690922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 2691922dab61SIlya Dryomov { 2692922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2693922dab61SIlya Dryomov 2694b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 2695b07d3c4bSIlya Dryomov list_del(&lwork->pending_item); 2696b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 2697b07d3c4bSIlya Dryomov 2698922dab61SIlya Dryomov linger_put(lreq); 2699922dab61SIlya Dryomov kfree(lwork); 2700922dab61SIlya Dryomov } 2701922dab61SIlya Dryomov 2702922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 2703922dab61SIlya Dryomov { 2704922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2705922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2706922dab61SIlya Dryomov 2707922dab61SIlya Dryomov verify_lreq_locked(lreq); 2708b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lwork->pending_item)); 2709b07d3c4bSIlya Dryomov 2710b07d3c4bSIlya Dryomov lwork->queued_stamp = jiffies; 2711b07d3c4bSIlya Dryomov list_add_tail(&lwork->pending_item, &lreq->pending_lworks); 2712922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 2713922dab61SIlya Dryomov } 2714922dab61SIlya Dryomov 2715922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 2716922dab61SIlya Dryomov { 2717922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2718922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2719922dab61SIlya Dryomov 2720922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2721922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2722922dab61SIlya Dryomov goto out; 2723922dab61SIlya Dryomov } 2724922dab61SIlya Dryomov 272519079203SIlya Dryomov WARN_ON(!lreq->is_watch); 2726922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 2727922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 2728922dab61SIlya Dryomov lwork->notify.payload_len); 2729922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 2730922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 2731922dab61SIlya Dryomov lwork->notify.payload_len); 2732922dab61SIlya Dryomov 2733922dab61SIlya Dryomov out: 2734922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 2735922dab61SIlya Dryomov lwork_free(lwork); 2736922dab61SIlya Dryomov } 2737922dab61SIlya Dryomov 2738922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 2739922dab61SIlya Dryomov { 2740922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2741922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2742922dab61SIlya Dryomov 2743922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2744922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2745922dab61SIlya Dryomov goto out; 2746922dab61SIlya Dryomov } 2747922dab61SIlya Dryomov 2748922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 2749922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 2750922dab61SIlya Dryomov 2751922dab61SIlya Dryomov out: 2752922dab61SIlya Dryomov lwork_free(lwork); 2753922dab61SIlya Dryomov } 2754922dab61SIlya Dryomov 2755922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 2756922dab61SIlya Dryomov { 2757922dab61SIlya Dryomov struct linger_work *lwork; 2758922dab61SIlya Dryomov 2759922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 2760922dab61SIlya Dryomov if (!lwork) { 2761922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 2762922dab61SIlya Dryomov return; 2763922dab61SIlya Dryomov } 2764922dab61SIlya Dryomov 2765922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 2766922dab61SIlya Dryomov lwork_queue(lwork); 2767922dab61SIlya Dryomov } 2768922dab61SIlya Dryomov 2769922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 2770922dab61SIlya Dryomov int result) 2771922dab61SIlya Dryomov { 2772922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 2773922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 2774922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 2775922dab61SIlya Dryomov } 2776922dab61SIlya Dryomov } 2777922dab61SIlya Dryomov 2778922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 2779922dab61SIlya Dryomov { 2780922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2781922dab61SIlya Dryomov 2782922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2783922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 2784922dab61SIlya Dryomov lreq->linger_id, req->r_result); 2785922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 2786922dab61SIlya Dryomov lreq->committed = true; 2787922dab61SIlya Dryomov 278819079203SIlya Dryomov if (!lreq->is_watch) { 278919079203SIlya Dryomov struct ceph_osd_data *osd_data = 279019079203SIlya Dryomov osd_req_op_data(req, 0, notify, response_data); 279119079203SIlya Dryomov void *p = page_address(osd_data->pages[0]); 279219079203SIlya Dryomov 279319079203SIlya Dryomov WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || 279419079203SIlya Dryomov osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); 279519079203SIlya Dryomov 279619079203SIlya Dryomov /* make note of the notify_id */ 279719079203SIlya Dryomov if (req->r_ops[0].outdata_len >= sizeof(u64)) { 279819079203SIlya Dryomov lreq->notify_id = ceph_decode_64(&p); 279919079203SIlya Dryomov dout("lreq %p notify_id %llu\n", lreq, 280019079203SIlya Dryomov lreq->notify_id); 280119079203SIlya Dryomov } else { 280219079203SIlya Dryomov dout("lreq %p no notify_id\n", lreq); 280319079203SIlya Dryomov } 280419079203SIlya Dryomov } 280519079203SIlya Dryomov 2806922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2807922dab61SIlya Dryomov linger_put(lreq); 2808922dab61SIlya Dryomov } 2809922dab61SIlya Dryomov 2810922dab61SIlya Dryomov static int normalize_watch_error(int err) 2811922dab61SIlya Dryomov { 2812922dab61SIlya Dryomov /* 2813922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 2814922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 2815922dab61SIlya Dryomov * the delete appear the same to the user. 2816922dab61SIlya Dryomov */ 2817922dab61SIlya Dryomov if (err == -ENOENT) 2818922dab61SIlya Dryomov err = -ENOTCONN; 2819922dab61SIlya Dryomov 2820922dab61SIlya Dryomov return err; 2821922dab61SIlya Dryomov } 2822922dab61SIlya Dryomov 2823922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 2824922dab61SIlya Dryomov { 2825922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2826922dab61SIlya Dryomov 2827922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2828922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 2829922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 2830922dab61SIlya Dryomov if (req->r_result < 0) { 2831922dab61SIlya Dryomov if (!lreq->last_error) { 2832922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2833922dab61SIlya Dryomov queue_watch_error(lreq); 2834922dab61SIlya Dryomov } 2835922dab61SIlya Dryomov } 2836922dab61SIlya Dryomov 2837922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2838922dab61SIlya Dryomov linger_put(lreq); 2839922dab61SIlya Dryomov } 2840922dab61SIlya Dryomov 2841922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 2842922dab61SIlya Dryomov { 2843922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->reg_req; 2844922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2845922dab61SIlya Dryomov 2846922dab61SIlya Dryomov verify_osdc_wrlocked(req->r_osdc); 2847922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2848922dab61SIlya Dryomov 2849922dab61SIlya Dryomov if (req->r_osd) 2850922dab61SIlya Dryomov cancel_linger_request(req); 2851922dab61SIlya Dryomov 2852922dab61SIlya Dryomov request_reinit(req); 2853922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 2854922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 2855922dab61SIlya Dryomov req->r_flags = lreq->t.flags; 2856922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 2857922dab61SIlya Dryomov 2858922dab61SIlya Dryomov mutex_lock(&lreq->lock); 285919079203SIlya Dryomov if (lreq->is_watch && lreq->committed) { 2860922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2861922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id); 2862922dab61SIlya Dryomov op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; 2863922dab61SIlya Dryomov op->watch.gen = ++lreq->register_gen; 2864922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 2865922dab61SIlya Dryomov op->watch.gen); 2866922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 2867922dab61SIlya Dryomov } else { 286819079203SIlya Dryomov if (!lreq->is_watch) 286919079203SIlya Dryomov lreq->notify_id = 0; 287019079203SIlya Dryomov else 2871922dab61SIlya Dryomov WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); 2872922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 2873922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 2874922dab61SIlya Dryomov } 2875922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2876922dab61SIlya Dryomov 2877922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2878922dab61SIlya Dryomov req->r_linger = true; 2879922dab61SIlya Dryomov 2880922dab61SIlya Dryomov submit_request(req, true); 2881922dab61SIlya Dryomov } 2882922dab61SIlya Dryomov 2883922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 2884922dab61SIlya Dryomov { 2885922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2886922dab61SIlya Dryomov 2887922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2888922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 2889922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 2890922dab61SIlya Dryomov lreq->last_error); 2891922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 2892b07d3c4bSIlya Dryomov if (!req->r_result) { 2893b07d3c4bSIlya Dryomov lreq->watch_valid_thru = lreq->ping_sent; 2894b07d3c4bSIlya Dryomov } else if (!lreq->last_error) { 2895922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2896922dab61SIlya Dryomov queue_watch_error(lreq); 2897922dab61SIlya Dryomov } 2898922dab61SIlya Dryomov } else { 2899922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 2900922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 2901922dab61SIlya Dryomov } 2902922dab61SIlya Dryomov 2903922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2904922dab61SIlya Dryomov linger_put(lreq); 2905922dab61SIlya Dryomov } 2906922dab61SIlya Dryomov 2907922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 2908922dab61SIlya Dryomov { 2909922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2910922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->ping_req; 2911922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2912922dab61SIlya Dryomov 2913b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 2914922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 2915922dab61SIlya Dryomov return; 2916922dab61SIlya Dryomov } 2917922dab61SIlya Dryomov 2918922dab61SIlya Dryomov lreq->ping_sent = jiffies; 2919922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 2920922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 2921922dab61SIlya Dryomov lreq->register_gen); 2922922dab61SIlya Dryomov 2923922dab61SIlya Dryomov if (req->r_osd) 2924922dab61SIlya Dryomov cancel_linger_request(req); 2925922dab61SIlya Dryomov 2926922dab61SIlya Dryomov request_reinit(req); 2927922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 2928922dab61SIlya Dryomov 2929922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2930922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id || 2931922dab61SIlya Dryomov op->watch.op != CEPH_OSD_WATCH_OP_PING); 2932922dab61SIlya Dryomov op->watch.gen = lreq->register_gen; 2933922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 2934922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2935922dab61SIlya Dryomov req->r_linger = true; 2936922dab61SIlya Dryomov 2937922dab61SIlya Dryomov ceph_osdc_get_request(req); 2938922dab61SIlya Dryomov account_request(req); 2939922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 2940922dab61SIlya Dryomov link_request(lreq->osd, req); 2941922dab61SIlya Dryomov send_request(req); 2942922dab61SIlya Dryomov } 2943922dab61SIlya Dryomov 2944922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 2945922dab61SIlya Dryomov { 2946922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2947922dab61SIlya Dryomov struct ceph_osd *osd; 2948922dab61SIlya Dryomov 29497de030d6SIlya Dryomov calc_target(osdc, &lreq->t, NULL, false); 2950922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 2951922dab61SIlya Dryomov link_linger(osd, lreq); 2952922dab61SIlya Dryomov 2953922dab61SIlya Dryomov send_linger(lreq); 2954922dab61SIlya Dryomov } 2955922dab61SIlya Dryomov 29564609245eSIlya Dryomov static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) 29574609245eSIlya Dryomov { 29584609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 29594609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 29604609245eSIlya Dryomov 29614609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 29624609245eSIlya Dryomov 29634609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 29644609245eSIlya Dryomov lreq->linger_id); 29654609245eSIlya Dryomov if (!lookup_lreq) 29664609245eSIlya Dryomov return; 29674609245eSIlya Dryomov 29684609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 29694609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 29704609245eSIlya Dryomov linger_put(lreq); 29714609245eSIlya Dryomov } 29724609245eSIlya Dryomov 2973922dab61SIlya Dryomov /* 2974922dab61SIlya Dryomov * @lreq has to be both registered and linked. 2975922dab61SIlya Dryomov */ 2976922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 2977922dab61SIlya Dryomov { 297819079203SIlya Dryomov if (lreq->is_watch && lreq->ping_req->r_osd) 2979922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 2980922dab61SIlya Dryomov if (lreq->reg_req->r_osd) 2981922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 29824609245eSIlya Dryomov cancel_linger_map_check(lreq); 2983922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 2984922dab61SIlya Dryomov linger_unregister(lreq); 2985922dab61SIlya Dryomov } 2986922dab61SIlya Dryomov 2987922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 2988922dab61SIlya Dryomov { 2989922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2990922dab61SIlya Dryomov 2991922dab61SIlya Dryomov down_write(&osdc->lock); 2992922dab61SIlya Dryomov if (__linger_registered(lreq)) 2993922dab61SIlya Dryomov __linger_cancel(lreq); 2994922dab61SIlya Dryomov up_write(&osdc->lock); 2995922dab61SIlya Dryomov } 2996922dab61SIlya Dryomov 29974609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq); 29984609245eSIlya Dryomov 29994609245eSIlya Dryomov static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) 30004609245eSIlya Dryomov { 30014609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 30024609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 30034609245eSIlya Dryomov 30044609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 30054609245eSIlya Dryomov WARN_ON(!map->epoch); 30064609245eSIlya Dryomov 30074609245eSIlya Dryomov if (lreq->register_gen) { 30084609245eSIlya Dryomov lreq->map_dne_bound = map->epoch; 30094609245eSIlya Dryomov dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, 30104609245eSIlya Dryomov lreq, lreq->linger_id); 30114609245eSIlya Dryomov } else { 30124609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", 30134609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 30144609245eSIlya Dryomov map->epoch); 30154609245eSIlya Dryomov } 30164609245eSIlya Dryomov 30174609245eSIlya Dryomov if (lreq->map_dne_bound) { 30184609245eSIlya Dryomov if (map->epoch >= lreq->map_dne_bound) { 30194609245eSIlya Dryomov /* we had a new enough map */ 30204609245eSIlya Dryomov pr_info("linger_id %llu pool does not exist\n", 30214609245eSIlya Dryomov lreq->linger_id); 30224609245eSIlya Dryomov linger_reg_commit_complete(lreq, -ENOENT); 30234609245eSIlya Dryomov __linger_cancel(lreq); 30244609245eSIlya Dryomov } 30254609245eSIlya Dryomov } else { 30264609245eSIlya Dryomov send_linger_map_check(lreq); 30274609245eSIlya Dryomov } 30284609245eSIlya Dryomov } 30294609245eSIlya Dryomov 30304609245eSIlya Dryomov static void linger_map_check_cb(struct ceph_mon_generic_request *greq) 30314609245eSIlya Dryomov { 30324609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 30334609245eSIlya Dryomov struct ceph_osd_linger_request *lreq; 30344609245eSIlya Dryomov u64 linger_id = greq->private_data; 30354609245eSIlya Dryomov 30364609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 30374609245eSIlya Dryomov 30384609245eSIlya Dryomov down_write(&osdc->lock); 30394609245eSIlya Dryomov lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); 30404609245eSIlya Dryomov if (!lreq) { 30414609245eSIlya Dryomov dout("%s linger_id %llu dne\n", __func__, linger_id); 30424609245eSIlya Dryomov goto out_unlock; 30434609245eSIlya Dryomov } 30444609245eSIlya Dryomov 30454609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", 30464609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 30474609245eSIlya Dryomov greq->u.newest); 30484609245eSIlya Dryomov if (!lreq->map_dne_bound) 30494609245eSIlya Dryomov lreq->map_dne_bound = greq->u.newest; 30504609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 30514609245eSIlya Dryomov check_linger_pool_dne(lreq); 30524609245eSIlya Dryomov 30534609245eSIlya Dryomov linger_put(lreq); 30544609245eSIlya Dryomov out_unlock: 30554609245eSIlya Dryomov up_write(&osdc->lock); 30564609245eSIlya Dryomov } 30574609245eSIlya Dryomov 30584609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq) 30594609245eSIlya Dryomov { 30604609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 30614609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 30624609245eSIlya Dryomov int ret; 30634609245eSIlya Dryomov 30644609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 30654609245eSIlya Dryomov 30664609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 30674609245eSIlya Dryomov lreq->linger_id); 30684609245eSIlya Dryomov if (lookup_lreq) { 30694609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 30704609245eSIlya Dryomov return; 30714609245eSIlya Dryomov } 30724609245eSIlya Dryomov 30734609245eSIlya Dryomov linger_get(lreq); 30744609245eSIlya Dryomov insert_linger_mc(&osdc->linger_map_checks, lreq); 30754609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 30764609245eSIlya Dryomov linger_map_check_cb, lreq->linger_id); 30774609245eSIlya Dryomov WARN_ON(ret); 30784609245eSIlya Dryomov } 30794609245eSIlya Dryomov 3080922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 3081922dab61SIlya Dryomov { 3082922dab61SIlya Dryomov int ret; 3083922dab61SIlya Dryomov 3084922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 3085922dab61SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); 3086922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 3087922dab61SIlya Dryomov } 3088922dab61SIlya Dryomov 308919079203SIlya Dryomov static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) 309019079203SIlya Dryomov { 309119079203SIlya Dryomov int ret; 309219079203SIlya Dryomov 309319079203SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 309419079203SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); 309519079203SIlya Dryomov return ret ?: lreq->notify_finish_error; 309619079203SIlya Dryomov } 309719079203SIlya Dryomov 3098922dab61SIlya Dryomov /* 3099fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 3100fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 3101fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 3102fbca9635SIlya Dryomov * reset is detected. 31033d14c5d2SYehuda Sadeh */ 31043d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 31053d14c5d2SYehuda Sadeh { 31063d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 31073d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 3108a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 31095aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 31107cc5e38fSIlya Dryomov unsigned long expiry_cutoff = jiffies - opts->osd_request_timeout; 31115aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 31125aea3dcdSIlya Dryomov struct rb_node *n, *p; 31133d14c5d2SYehuda Sadeh 31145aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 31155aea3dcdSIlya Dryomov down_write(&osdc->lock); 31163d14c5d2SYehuda Sadeh 31173d14c5d2SYehuda Sadeh /* 31183d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 31193d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 31203d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 31213d14c5d2SYehuda Sadeh */ 31225aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 31235aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 31245aea3dcdSIlya Dryomov bool found = false; 31253d14c5d2SYehuda Sadeh 31267cc5e38fSIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 31275aea3dcdSIlya Dryomov struct ceph_osd_request *req = 31285aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 31295aea3dcdSIlya Dryomov 31307cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 31317cc5e38fSIlya Dryomov 31325aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 31335aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 31345aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 31355aea3dcdSIlya Dryomov found = true; 31365aea3dcdSIlya Dryomov } 31377cc5e38fSIlya Dryomov if (opts->osd_request_timeout && 31387cc5e38fSIlya Dryomov time_before(req->r_start_stamp, expiry_cutoff)) { 31397cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 31407cc5e38fSIlya Dryomov req->r_tid, osd->o_osd); 31417cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 31427cc5e38fSIlya Dryomov } 31435aea3dcdSIlya Dryomov } 3144922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 3145922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3146922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 3147922dab61SIlya Dryomov 3148922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 3149922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 3150922dab61SIlya Dryomov found = true; 3151922dab61SIlya Dryomov 3152922dab61SIlya Dryomov mutex_lock(&lreq->lock); 315319079203SIlya Dryomov if (lreq->is_watch && lreq->committed && !lreq->last_error) 3154922dab61SIlya Dryomov send_linger_ping(lreq); 3155922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3156922dab61SIlya Dryomov } 31575aea3dcdSIlya Dryomov 31585aea3dcdSIlya Dryomov if (found) 31593d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 31603d14c5d2SYehuda Sadeh } 31615aea3dcdSIlya Dryomov 31627cc5e38fSIlya Dryomov if (opts->osd_request_timeout) { 31637cc5e38fSIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 31647cc5e38fSIlya Dryomov struct ceph_osd_request *req = 31657cc5e38fSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 31667cc5e38fSIlya Dryomov 31677cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 31687cc5e38fSIlya Dryomov 31697cc5e38fSIlya Dryomov if (time_before(req->r_start_stamp, expiry_cutoff)) { 31707cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 31717cc5e38fSIlya Dryomov req->r_tid, osdc->homeless_osd.o_osd); 31727cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 31737cc5e38fSIlya Dryomov } 31747cc5e38fSIlya Dryomov } 31757cc5e38fSIlya Dryomov } 31767cc5e38fSIlya Dryomov 31775aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 31785aea3dcdSIlya Dryomov maybe_request_map(osdc); 31795aea3dcdSIlya Dryomov 31803d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 31815aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 31825aea3dcdSIlya Dryomov struct ceph_osd, 31833d14c5d2SYehuda Sadeh o_keepalive_item); 31843d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 31853d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 31863d14c5d2SYehuda Sadeh } 31873d14c5d2SYehuda Sadeh 31885aea3dcdSIlya Dryomov up_write(&osdc->lock); 3189fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 3190fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 31913d14c5d2SYehuda Sadeh } 31923d14c5d2SYehuda Sadeh 31933d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 31943d14c5d2SYehuda Sadeh { 31953d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 31963d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 31973d14c5d2SYehuda Sadeh osds_timeout_work.work); 3198a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 319942a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 32003d14c5d2SYehuda Sadeh 320142a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 32025aea3dcdSIlya Dryomov down_write(&osdc->lock); 320342a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 320442a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 320542a2c09fSIlya Dryomov break; 320642a2c09fSIlya Dryomov 32075aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 3208922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 32095aea3dcdSIlya Dryomov close_osd(osd); 321042a2c09fSIlya Dryomov } 321142a2c09fSIlya Dryomov 32125aea3dcdSIlya Dryomov up_write(&osdc->lock); 32133d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 32143d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 32153d14c5d2SYehuda Sadeh } 32163d14c5d2SYehuda Sadeh 3217205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 3218205ee118SIlya Dryomov struct ceph_object_locator *oloc) 3219205ee118SIlya Dryomov { 3220205ee118SIlya Dryomov u8 struct_v, struct_cv; 3221205ee118SIlya Dryomov u32 len; 3222205ee118SIlya Dryomov void *struct_end; 3223205ee118SIlya Dryomov int ret = 0; 3224205ee118SIlya Dryomov 3225205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3226205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3227205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3228205ee118SIlya Dryomov if (struct_v < 3) { 3229205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 3230205ee118SIlya Dryomov struct_v, struct_cv); 3231205ee118SIlya Dryomov goto e_inval; 3232205ee118SIlya Dryomov } 3233205ee118SIlya Dryomov if (struct_cv > 6) { 3234205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 3235205ee118SIlya Dryomov struct_v, struct_cv); 3236205ee118SIlya Dryomov goto e_inval; 3237205ee118SIlya Dryomov } 3238205ee118SIlya Dryomov len = ceph_decode_32(p); 3239205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3240205ee118SIlya Dryomov struct_end = *p + len; 3241205ee118SIlya Dryomov 3242205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 3243205ee118SIlya Dryomov *p += 4; /* skip preferred */ 3244205ee118SIlya Dryomov 3245205ee118SIlya Dryomov len = ceph_decode_32(p); 3246205ee118SIlya Dryomov if (len > 0) { 3247205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 3248205ee118SIlya Dryomov goto e_inval; 3249205ee118SIlya Dryomov } 3250205ee118SIlya Dryomov 3251205ee118SIlya Dryomov if (struct_v >= 5) { 3252cd08e0a2SYan, Zheng bool changed = false; 3253cd08e0a2SYan, Zheng 3254205ee118SIlya Dryomov len = ceph_decode_32(p); 3255205ee118SIlya Dryomov if (len > 0) { 325630c156d9SYan, Zheng ceph_decode_need(p, end, len, e_inval); 3257cd08e0a2SYan, Zheng if (!oloc->pool_ns || 3258cd08e0a2SYan, Zheng ceph_compare_string(oloc->pool_ns, *p, len)) 3259cd08e0a2SYan, Zheng changed = true; 326030c156d9SYan, Zheng *p += len; 3261cd08e0a2SYan, Zheng } else { 3262cd08e0a2SYan, Zheng if (oloc->pool_ns) 3263cd08e0a2SYan, Zheng changed = true; 3264cd08e0a2SYan, Zheng } 3265cd08e0a2SYan, Zheng if (changed) { 3266cd08e0a2SYan, Zheng /* redirect changes namespace */ 3267cd08e0a2SYan, Zheng pr_warn("ceph_object_locator::nspace is changed\n"); 3268cd08e0a2SYan, Zheng goto e_inval; 3269205ee118SIlya Dryomov } 3270205ee118SIlya Dryomov } 3271205ee118SIlya Dryomov 3272205ee118SIlya Dryomov if (struct_v >= 6) { 3273205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 3274205ee118SIlya Dryomov if (hash != -1) { 3275205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 3276205ee118SIlya Dryomov goto e_inval; 3277205ee118SIlya Dryomov } 3278205ee118SIlya Dryomov } 3279205ee118SIlya Dryomov 3280205ee118SIlya Dryomov /* skip the rest */ 3281205ee118SIlya Dryomov *p = struct_end; 3282205ee118SIlya Dryomov out: 3283205ee118SIlya Dryomov return ret; 3284205ee118SIlya Dryomov 3285205ee118SIlya Dryomov e_inval: 3286205ee118SIlya Dryomov ret = -EINVAL; 3287205ee118SIlya Dryomov goto out; 3288205ee118SIlya Dryomov } 3289205ee118SIlya Dryomov 3290205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 3291205ee118SIlya Dryomov struct ceph_request_redirect *redir) 3292205ee118SIlya Dryomov { 3293205ee118SIlya Dryomov u8 struct_v, struct_cv; 3294205ee118SIlya Dryomov u32 len; 3295205ee118SIlya Dryomov void *struct_end; 3296205ee118SIlya Dryomov int ret; 3297205ee118SIlya Dryomov 3298205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3299205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3300205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3301205ee118SIlya Dryomov if (struct_cv > 1) { 3302205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 3303205ee118SIlya Dryomov struct_v, struct_cv); 3304205ee118SIlya Dryomov goto e_inval; 3305205ee118SIlya Dryomov } 3306205ee118SIlya Dryomov len = ceph_decode_32(p); 3307205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3308205ee118SIlya Dryomov struct_end = *p + len; 3309205ee118SIlya Dryomov 3310205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 3311205ee118SIlya Dryomov if (ret) 3312205ee118SIlya Dryomov goto out; 3313205ee118SIlya Dryomov 3314205ee118SIlya Dryomov len = ceph_decode_32(p); 3315205ee118SIlya Dryomov if (len > 0) { 3316205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 3317205ee118SIlya Dryomov goto e_inval; 3318205ee118SIlya Dryomov } 3319205ee118SIlya Dryomov 3320205ee118SIlya Dryomov len = ceph_decode_32(p); 3321205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 3322205ee118SIlya Dryomov 3323205ee118SIlya Dryomov /* skip the rest */ 3324205ee118SIlya Dryomov *p = struct_end; 3325205ee118SIlya Dryomov out: 3326205ee118SIlya Dryomov return ret; 3327205ee118SIlya Dryomov 3328205ee118SIlya Dryomov e_inval: 3329205ee118SIlya Dryomov ret = -EINVAL; 3330205ee118SIlya Dryomov goto out; 3331205ee118SIlya Dryomov } 3332205ee118SIlya Dryomov 3333fe5da05eSIlya Dryomov struct MOSDOpReply { 3334fe5da05eSIlya Dryomov struct ceph_pg pgid; 3335fe5da05eSIlya Dryomov u64 flags; 3336fe5da05eSIlya Dryomov int result; 3337fe5da05eSIlya Dryomov u32 epoch; 3338fe5da05eSIlya Dryomov int num_ops; 3339fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 3340fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 3341fe5da05eSIlya Dryomov int retry_attempt; 3342fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 3343fe5da05eSIlya Dryomov u64 user_version; 3344fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 3345fe5da05eSIlya Dryomov }; 334625845472SSage Weil 3347fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 33483d14c5d2SYehuda Sadeh { 3349fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 3350fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 3351fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 3352fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 3353b0b31a8fSIlya Dryomov u8 decode_redir; 3354fe5da05eSIlya Dryomov u32 len; 3355fe5da05eSIlya Dryomov int ret; 3356fe5da05eSIlya Dryomov int i; 33573d14c5d2SYehuda Sadeh 3358fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 3359fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 3360fe5da05eSIlya Dryomov p += len; /* skip oid */ 33611b83bef2SSage Weil 3362fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 3363fe5da05eSIlya Dryomov if (ret) 3364fe5da05eSIlya Dryomov return ret; 33651b83bef2SSage Weil 3366fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 3367fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 3368fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 3369fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 3370fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 3371fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 33721b83bef2SSage Weil 3373fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 3374fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 3375fe5da05eSIlya Dryomov goto e_inval; 33761b83bef2SSage Weil 3377fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 3378fe5da05eSIlya Dryomov e_inval); 3379fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 33801b83bef2SSage Weil struct ceph_osd_op *op = p; 33811b83bef2SSage Weil 3382fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 33831b83bef2SSage Weil p += sizeof(*op); 33841b83bef2SSage Weil } 3385fe5da05eSIlya Dryomov 3386fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 3387fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 3388fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 3389fe5da05eSIlya Dryomov 3390fe5da05eSIlya Dryomov if (version >= 5) { 3391fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 3392fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 3393fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 3394fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 3395fe5da05eSIlya Dryomov } else { 3396fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 3397fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 33981b83bef2SSage Weil } 33991b83bef2SSage Weil 3400fe5da05eSIlya Dryomov if (version >= 6) { 3401fe5da05eSIlya Dryomov if (version >= 7) 3402fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 3403b0b31a8fSIlya Dryomov else 3404b0b31a8fSIlya Dryomov decode_redir = 1; 3405b0b31a8fSIlya Dryomov } else { 3406b0b31a8fSIlya Dryomov decode_redir = 0; 3407b0b31a8fSIlya Dryomov } 3408b0b31a8fSIlya Dryomov 3409b0b31a8fSIlya Dryomov if (decode_redir) { 3410fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 3411fe5da05eSIlya Dryomov if (ret) 3412fe5da05eSIlya Dryomov return ret; 3413205ee118SIlya Dryomov } else { 3414fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 3415205ee118SIlya Dryomov } 3416205ee118SIlya Dryomov 3417fe5da05eSIlya Dryomov return 0; 3418205ee118SIlya Dryomov 3419fe5da05eSIlya Dryomov e_inval: 3420fe5da05eSIlya Dryomov return -EINVAL; 3421fe5da05eSIlya Dryomov } 3422fe5da05eSIlya Dryomov 3423fe5da05eSIlya Dryomov /* 3424b18b9550SIlya Dryomov * Handle MOSDOpReply. Set ->r_result and call the callback if it is 3425b18b9550SIlya Dryomov * specified. 3426fe5da05eSIlya Dryomov */ 34275aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 3428fe5da05eSIlya Dryomov { 34295aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 3430fe5da05eSIlya Dryomov struct ceph_osd_request *req; 3431fe5da05eSIlya Dryomov struct MOSDOpReply m; 3432fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 3433fe5da05eSIlya Dryomov u32 data_len = 0; 3434fe5da05eSIlya Dryomov int ret; 3435fe5da05eSIlya Dryomov int i; 3436fe5da05eSIlya Dryomov 3437fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 3438fe5da05eSIlya Dryomov 34395aea3dcdSIlya Dryomov down_read(&osdc->lock); 34405aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 34415aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 34425aea3dcdSIlya Dryomov goto out_unlock_osdc; 3443fe5da05eSIlya Dryomov } 34445aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 34455aea3dcdSIlya Dryomov 34465aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 34475aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 34485aea3dcdSIlya Dryomov if (!req) { 34495aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 34505aea3dcdSIlya Dryomov goto out_unlock_session; 34515aea3dcdSIlya Dryomov } 3452fe5da05eSIlya Dryomov 3453cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns; 3454fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 3455cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = NULL; 3456fe5da05eSIlya Dryomov if (ret) { 3457fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 3458fe5da05eSIlya Dryomov req->r_tid, ret); 3459fe5da05eSIlya Dryomov ceph_msg_dump(msg); 3460fe5da05eSIlya Dryomov goto fail_request; 3461fe5da05eSIlya Dryomov } 3462fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 3463fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 3464fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 3465fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 3466fe5da05eSIlya Dryomov 3467fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 3468fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 3469fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 3470fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 3471fe5da05eSIlya Dryomov req->r_attempts - 1); 34725aea3dcdSIlya Dryomov goto out_unlock_session; 3473fe5da05eSIlya Dryomov } 3474fe5da05eSIlya Dryomov } else { 3475fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 3476fe5da05eSIlya Dryomov } 3477fe5da05eSIlya Dryomov 3478fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 3479fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 3480fe5da05eSIlya Dryomov m.redirect.oloc.pool); 34815aea3dcdSIlya Dryomov unlink_request(osd, req); 34825aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 3483205ee118SIlya Dryomov 348430c156d9SYan, Zheng /* 348530c156d9SYan, Zheng * Not ceph_oloc_copy() - changing pool_ns is not 348630c156d9SYan, Zheng * supported. 348730c156d9SYan, Zheng */ 348830c156d9SYan, Zheng req->r_t.target_oloc.pool = m.redirect.oloc.pool; 34895aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; 34905aea3dcdSIlya Dryomov req->r_tid = 0; 34915aea3dcdSIlya Dryomov __submit_request(req, false); 34925aea3dcdSIlya Dryomov goto out_unlock_osdc; 3493205ee118SIlya Dryomov } 3494205ee118SIlya Dryomov 3495fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 3496fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 3497fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 3498fe5da05eSIlya Dryomov goto fail_request; 3499fe5da05eSIlya Dryomov } 3500fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 3501fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 3502fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 3503fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 3504fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 3505fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 3506fe5da05eSIlya Dryomov } 3507fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 3508fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 3509fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 3510fe5da05eSIlya Dryomov goto fail_request; 3511fe5da05eSIlya Dryomov } 3512b18b9550SIlya Dryomov dout("%s req %p tid %llu result %d data_len %u\n", __func__, 3513b18b9550SIlya Dryomov req, req->r_tid, m.result, data_len); 35143d14c5d2SYehuda Sadeh 3515b18b9550SIlya Dryomov /* 3516b18b9550SIlya Dryomov * Since we only ever request ONDISK, we should only ever get 3517b18b9550SIlya Dryomov * one (type of) reply back. 3518b18b9550SIlya Dryomov */ 3519b18b9550SIlya Dryomov WARN_ON(!(m.flags & CEPH_OSD_FLAG_ONDISK)); 3520fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 352145ee2c1dSIlya Dryomov finish_request(req); 35225aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 35235aea3dcdSIlya Dryomov up_read(&osdc->lock); 35243d14c5d2SYehuda Sadeh 3525fe5da05eSIlya Dryomov __complete_request(req); 3526b18b9550SIlya Dryomov complete_all(&req->r_completion); 3527dc045a91SIlya Dryomov ceph_osdc_put_request(req); 35283d14c5d2SYehuda Sadeh return; 3529fe5da05eSIlya Dryomov 3530fe5da05eSIlya Dryomov fail_request: 35314609245eSIlya Dryomov complete_request(req, -EIO); 35325aea3dcdSIlya Dryomov out_unlock_session: 35335aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 35345aea3dcdSIlya Dryomov out_unlock_osdc: 35355aea3dcdSIlya Dryomov up_read(&osdc->lock); 35363d14c5d2SYehuda Sadeh } 35373d14c5d2SYehuda Sadeh 353842c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 353942c1b124SIlya Dryomov { 354042c1b124SIlya Dryomov struct rb_node *n; 354142c1b124SIlya Dryomov 354242c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 354342c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 354442c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 354542c1b124SIlya Dryomov 354642c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 354742c1b124SIlya Dryomov } 354842c1b124SIlya Dryomov } 354942c1b124SIlya Dryomov 35505aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 35513d14c5d2SYehuda Sadeh { 35525aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 35533d14c5d2SYehuda Sadeh 35545aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 35555aea3dcdSIlya Dryomov if (!pi) 35565aea3dcdSIlya Dryomov return false; 35573d14c5d2SYehuda Sadeh 35585aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 35593d14c5d2SYehuda Sadeh } 35603d14c5d2SYehuda Sadeh 3561922dab61SIlya Dryomov static enum calc_target_result 3562922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 3563922dab61SIlya Dryomov { 3564922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3565922dab61SIlya Dryomov enum calc_target_result ct_res; 3566922dab61SIlya Dryomov 35677de030d6SIlya Dryomov ct_res = calc_target(osdc, &lreq->t, NULL, true); 3568922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 3569922dab61SIlya Dryomov struct ceph_osd *osd; 3570922dab61SIlya Dryomov 3571922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3572922dab61SIlya Dryomov if (osd != lreq->osd) { 3573922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3574922dab61SIlya Dryomov link_linger(osd, lreq); 3575922dab61SIlya Dryomov } 3576922dab61SIlya Dryomov } 3577922dab61SIlya Dryomov 3578922dab61SIlya Dryomov return ct_res; 3579922dab61SIlya Dryomov } 3580922dab61SIlya Dryomov 35813d14c5d2SYehuda Sadeh /* 35825aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 35833d14c5d2SYehuda Sadeh */ 35845aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 35855aea3dcdSIlya Dryomov bool force_resend, 35865aea3dcdSIlya Dryomov bool cleared_full, 35875aea3dcdSIlya Dryomov bool check_pool_cleared_full, 35885aea3dcdSIlya Dryomov struct rb_root *need_resend, 35895aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 35903d14c5d2SYehuda Sadeh { 35915aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 35925aea3dcdSIlya Dryomov struct rb_node *n; 35935aea3dcdSIlya Dryomov bool force_resend_writes; 35943d14c5d2SYehuda Sadeh 3595922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 3596922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3597922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3598922dab61SIlya Dryomov enum calc_target_result ct_res; 3599922dab61SIlya Dryomov 3600922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 3601922dab61SIlya Dryomov 3602922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 3603922dab61SIlya Dryomov lreq->linger_id); 3604922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 3605922dab61SIlya Dryomov switch (ct_res) { 3606922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 3607922dab61SIlya Dryomov force_resend_writes = cleared_full || 3608922dab61SIlya Dryomov (check_pool_cleared_full && 3609922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 3610922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 3611922dab61SIlya Dryomov break; 3612922dab61SIlya Dryomov 3613922dab61SIlya Dryomov /* fall through */ 3614922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 36154609245eSIlya Dryomov cancel_linger_map_check(lreq); 3616922dab61SIlya Dryomov /* 3617922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 3618922dab61SIlya Dryomov * may have already added it to the list, since 3619922dab61SIlya Dryomov * it's not unlinked here. 3620922dab61SIlya Dryomov */ 3621922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 3622922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 3623922dab61SIlya Dryomov break; 3624922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 3625a10bcb19SIlya Dryomov list_del_init(&lreq->scan_item); 36264609245eSIlya Dryomov check_linger_pool_dne(lreq); 3627922dab61SIlya Dryomov break; 3628922dab61SIlya Dryomov } 3629922dab61SIlya Dryomov } 3630922dab61SIlya Dryomov 36315aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 36325aea3dcdSIlya Dryomov struct ceph_osd_request *req = 36335aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 36345aea3dcdSIlya Dryomov enum calc_target_result ct_res; 3635ab60b16dSAlex Elder 36364609245eSIlya Dryomov n = rb_next(n); /* unlink_request(), check_pool_dne() */ 3637ab60b16dSAlex Elder 36385aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 36397de030d6SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, &req->r_osd->o_con, 36407de030d6SIlya Dryomov false); 36415aea3dcdSIlya Dryomov switch (ct_res) { 36425aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 36435aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 36445aea3dcdSIlya Dryomov (check_pool_cleared_full && 36455aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 36465aea3dcdSIlya Dryomov if (!force_resend && 36475aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 36485aea3dcdSIlya Dryomov !force_resend_writes)) 36495aea3dcdSIlya Dryomov break; 3650a40c4f10SYehuda Sadeh 36515aea3dcdSIlya Dryomov /* fall through */ 36525aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 36534609245eSIlya Dryomov cancel_map_check(req); 36545aea3dcdSIlya Dryomov unlink_request(osd, req); 36555aea3dcdSIlya Dryomov insert_request(need_resend, req); 36565aea3dcdSIlya Dryomov break; 36575aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 36584609245eSIlya Dryomov check_pool_dne(req); 36595aea3dcdSIlya Dryomov break; 3660a40c4f10SYehuda Sadeh } 36613d14c5d2SYehuda Sadeh } 36623d14c5d2SYehuda Sadeh } 36636f6c7006SSage Weil 366442c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 36655aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 36665aea3dcdSIlya Dryomov struct rb_root *need_resend, 36675aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 366842c1b124SIlya Dryomov { 366942c1b124SIlya Dryomov struct ceph_osdmap *newmap; 367042c1b124SIlya Dryomov struct rb_node *n; 367142c1b124SIlya Dryomov bool skipped_map = false; 367242c1b124SIlya Dryomov bool was_full; 367342c1b124SIlya Dryomov 3674b7ec35b3SIlya Dryomov was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 367542c1b124SIlya Dryomov set_pool_was_full(osdc); 367642c1b124SIlya Dryomov 367742c1b124SIlya Dryomov if (incremental) 367842c1b124SIlya Dryomov newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); 367942c1b124SIlya Dryomov else 368042c1b124SIlya Dryomov newmap = ceph_osdmap_decode(&p, end); 368142c1b124SIlya Dryomov if (IS_ERR(newmap)) 368242c1b124SIlya Dryomov return PTR_ERR(newmap); 368342c1b124SIlya Dryomov 368442c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 368542c1b124SIlya Dryomov /* 368642c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 368742c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 368842c1b124SIlya Dryomov * should be false. 368942c1b124SIlya Dryomov */ 369042c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 369142c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 369242c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 369342c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 369442c1b124SIlya Dryomov 369542c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 369642c1b124SIlya Dryomov if (old_pi) 369742c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 369842c1b124SIlya Dryomov else 369942c1b124SIlya Dryomov WARN_ON(pi->was_full); 370042c1b124SIlya Dryomov } 370142c1b124SIlya Dryomov 370242c1b124SIlya Dryomov if (osdc->osdmap->epoch && 370342c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 370442c1b124SIlya Dryomov WARN_ON(incremental); 370542c1b124SIlya Dryomov skipped_map = true; 370642c1b124SIlya Dryomov } 370742c1b124SIlya Dryomov 370842c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 370942c1b124SIlya Dryomov osdc->osdmap = newmap; 371042c1b124SIlya Dryomov } 371142c1b124SIlya Dryomov 3712b7ec35b3SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 37135aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 37145aea3dcdSIlya Dryomov need_resend, need_resend_linger); 37155aea3dcdSIlya Dryomov 37165aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 37175aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 37185aea3dcdSIlya Dryomov 37195aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 37205aea3dcdSIlya Dryomov 37215aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 37225aea3dcdSIlya Dryomov need_resend_linger); 37235aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 37245aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 37255aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 37265aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 37275aea3dcdSIlya Dryomov close_osd(osd); 37285aea3dcdSIlya Dryomov } 372942c1b124SIlya Dryomov 373042c1b124SIlya Dryomov return 0; 373142c1b124SIlya Dryomov } 37326f6c7006SSage Weil 37335aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 37345aea3dcdSIlya Dryomov struct rb_root *need_resend, 37355aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 37365aea3dcdSIlya Dryomov { 3737922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 373804c7d789SIlya Dryomov enum calc_target_result ct_res; 37395aea3dcdSIlya Dryomov struct rb_node *n; 37405aea3dcdSIlya Dryomov 374104c7d789SIlya Dryomov /* make sure need_resend targets reflect latest map */ 374204c7d789SIlya Dryomov for (n = rb_first(need_resend); n; ) { 374304c7d789SIlya Dryomov struct ceph_osd_request *req = 374404c7d789SIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 374504c7d789SIlya Dryomov 374604c7d789SIlya Dryomov n = rb_next(n); 374704c7d789SIlya Dryomov 374804c7d789SIlya Dryomov if (req->r_t.epoch < osdc->osdmap->epoch) { 374904c7d789SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, NULL, false); 375004c7d789SIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) { 375104c7d789SIlya Dryomov erase_request(need_resend, req); 375204c7d789SIlya Dryomov check_pool_dne(req); 375304c7d789SIlya Dryomov } 375404c7d789SIlya Dryomov } 375504c7d789SIlya Dryomov } 375604c7d789SIlya Dryomov 37575aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 37585aea3dcdSIlya Dryomov struct ceph_osd_request *req = 37595aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 37605aea3dcdSIlya Dryomov struct ceph_osd *osd; 37615aea3dcdSIlya Dryomov 37625aea3dcdSIlya Dryomov n = rb_next(n); 37635aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 37645aea3dcdSIlya Dryomov 37655aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 37665aea3dcdSIlya Dryomov link_request(osd, req); 37675aea3dcdSIlya Dryomov if (!req->r_linger) { 37685aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 37695aea3dcdSIlya Dryomov send_request(req); 3770922dab61SIlya Dryomov } else { 3771922dab61SIlya Dryomov cancel_linger_request(req); 37725aea3dcdSIlya Dryomov } 37735aea3dcdSIlya Dryomov } 3774922dab61SIlya Dryomov 3775922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 3776922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 3777922dab61SIlya Dryomov send_linger(lreq); 3778922dab61SIlya Dryomov 3779922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 3780922dab61SIlya Dryomov } 37815aea3dcdSIlya Dryomov } 37825aea3dcdSIlya Dryomov 37833d14c5d2SYehuda Sadeh /* 37843d14c5d2SYehuda Sadeh * Process updated osd map. 37853d14c5d2SYehuda Sadeh * 37863d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 37873d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 37883d14c5d2SYehuda Sadeh * off to different OSDs as needed. 37893d14c5d2SYehuda Sadeh */ 37903d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 37913d14c5d2SYehuda Sadeh { 379242c1b124SIlya Dryomov void *p = msg->front.iov_base; 379342c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 37943d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 37953d14c5d2SYehuda Sadeh u32 epoch; 37963d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 37975aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 37985aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 379942c1b124SIlya Dryomov bool handled_incremental = false; 380042c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 380142c1b124SIlya Dryomov bool pauserd, pausewr; 380242c1b124SIlya Dryomov int err; 38033d14c5d2SYehuda Sadeh 380442c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 38055aea3dcdSIlya Dryomov down_write(&osdc->lock); 38063d14c5d2SYehuda Sadeh 38073d14c5d2SYehuda Sadeh /* verify fsid */ 38083d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 38093d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 38103d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 381142c1b124SIlya Dryomov goto bad; 38123d14c5d2SYehuda Sadeh 3813b7ec35b3SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3814b7ec35b3SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3815b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 381642c1b124SIlya Dryomov have_pool_full(osdc); 38179a1ea2dbSJosh Durgin 38183d14c5d2SYehuda Sadeh /* incremental maps */ 38193d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 38203d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 38213d14c5d2SYehuda Sadeh while (nr_maps > 0) { 38223d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 38233d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 38243d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 38253d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 382642c1b124SIlya Dryomov if (osdc->osdmap->epoch && 382742c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 38283d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 38293d14c5d2SYehuda Sadeh epoch, maplen); 38305aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 38315aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 383242c1b124SIlya Dryomov if (err) 38333d14c5d2SYehuda Sadeh goto bad; 383442c1b124SIlya Dryomov handled_incremental = true; 38353d14c5d2SYehuda Sadeh } else { 38363d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 38373d14c5d2SYehuda Sadeh epoch, maplen); 38383d14c5d2SYehuda Sadeh } 383942c1b124SIlya Dryomov p += maplen; 38403d14c5d2SYehuda Sadeh nr_maps--; 38413d14c5d2SYehuda Sadeh } 384242c1b124SIlya Dryomov if (handled_incremental) 38433d14c5d2SYehuda Sadeh goto done; 38443d14c5d2SYehuda Sadeh 38453d14c5d2SYehuda Sadeh /* full maps */ 38463d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 38473d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 38483d14c5d2SYehuda Sadeh while (nr_maps) { 38493d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 38503d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 38513d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 38523d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 38533d14c5d2SYehuda Sadeh if (nr_maps > 1) { 38543d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 38553d14c5d2SYehuda Sadeh epoch, maplen); 3856e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 38573d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 38583d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 38593d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 38603d14c5d2SYehuda Sadeh } else { 38613d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 38625aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 38635aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 386442c1b124SIlya Dryomov if (err) 38653d14c5d2SYehuda Sadeh goto bad; 38663d14c5d2SYehuda Sadeh } 38673d14c5d2SYehuda Sadeh p += maplen; 38683d14c5d2SYehuda Sadeh nr_maps--; 38693d14c5d2SYehuda Sadeh } 38703d14c5d2SYehuda Sadeh 38713d14c5d2SYehuda Sadeh done: 3872cd634fb6SSage Weil /* 3873cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 3874cd634fb6SSage Weil * we find out when we are no longer full and stop returning 3875cd634fb6SSage Weil * ENOSPC. 3876cd634fb6SSage Weil */ 3877b7ec35b3SIlya Dryomov pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3878b7ec35b3SIlya Dryomov pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3879b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 388042c1b124SIlya Dryomov have_pool_full(osdc); 388158eb7932SJeff Layton if (was_pauserd || was_pausewr || pauserd || pausewr || 388258eb7932SJeff Layton osdc->osdmap->epoch < osdc->epoch_barrier) 388342c1b124SIlya Dryomov maybe_request_map(osdc); 3884cd634fb6SSage Weil 38855aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 388642c1b124SIlya Dryomov 3887fc36d0a4SJeff Layton ceph_osdc_abort_on_full(osdc); 388842c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 388942c1b124SIlya Dryomov osdc->osdmap->epoch); 38905aea3dcdSIlya Dryomov up_write(&osdc->lock); 38913d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 38923d14c5d2SYehuda Sadeh return; 38933d14c5d2SYehuda Sadeh 38943d14c5d2SYehuda Sadeh bad: 38953d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 38963d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 38975aea3dcdSIlya Dryomov up_write(&osdc->lock); 38985aea3dcdSIlya Dryomov } 38995aea3dcdSIlya Dryomov 39005aea3dcdSIlya Dryomov /* 39015aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 39025aea3dcdSIlya Dryomov */ 39035aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 39045aea3dcdSIlya Dryomov { 39055aea3dcdSIlya Dryomov struct rb_node *n; 39065aea3dcdSIlya Dryomov 3907a02a946dSIlya Dryomov clear_backoffs(osd); 3908a02a946dSIlya Dryomov 3909922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 39105aea3dcdSIlya Dryomov struct ceph_osd_request *req = 39115aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 39125aea3dcdSIlya Dryomov 3913922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 3914922dab61SIlya Dryomov 39155aea3dcdSIlya Dryomov if (!req->r_linger) { 39165aea3dcdSIlya Dryomov if (!req->r_t.paused) 39175aea3dcdSIlya Dryomov send_request(req); 3918922dab61SIlya Dryomov } else { 3919922dab61SIlya Dryomov cancel_linger_request(req); 39205aea3dcdSIlya Dryomov } 39215aea3dcdSIlya Dryomov } 3922922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 3923922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3924922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3925922dab61SIlya Dryomov 3926922dab61SIlya Dryomov send_linger(lreq); 3927922dab61SIlya Dryomov } 39285aea3dcdSIlya Dryomov } 39295aea3dcdSIlya Dryomov 39305aea3dcdSIlya Dryomov /* 39315aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 39325aea3dcdSIlya Dryomov */ 39335aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 39345aea3dcdSIlya Dryomov { 39355aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 39365aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 39375aea3dcdSIlya Dryomov 39385aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 39395aea3dcdSIlya Dryomov 39405aea3dcdSIlya Dryomov down_write(&osdc->lock); 39415aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 39425aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 39435aea3dcdSIlya Dryomov goto out_unlock; 39445aea3dcdSIlya Dryomov } 39455aea3dcdSIlya Dryomov 39465aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 39475aea3dcdSIlya Dryomov kick_osd_requests(osd); 39485aea3dcdSIlya Dryomov maybe_request_map(osdc); 39495aea3dcdSIlya Dryomov 39505aea3dcdSIlya Dryomov out_unlock: 39515aea3dcdSIlya Dryomov up_write(&osdc->lock); 39523d14c5d2SYehuda Sadeh } 39533d14c5d2SYehuda Sadeh 3954a02a946dSIlya Dryomov struct MOSDBackoff { 3955a02a946dSIlya Dryomov struct ceph_spg spgid; 3956a02a946dSIlya Dryomov u32 map_epoch; 3957a02a946dSIlya Dryomov u8 op; 3958a02a946dSIlya Dryomov u64 id; 3959a02a946dSIlya Dryomov struct ceph_hobject_id *begin; 3960a02a946dSIlya Dryomov struct ceph_hobject_id *end; 3961a02a946dSIlya Dryomov }; 3962a02a946dSIlya Dryomov 3963a02a946dSIlya Dryomov static int decode_MOSDBackoff(const struct ceph_msg *msg, struct MOSDBackoff *m) 3964a02a946dSIlya Dryomov { 3965a02a946dSIlya Dryomov void *p = msg->front.iov_base; 3966a02a946dSIlya Dryomov void *const end = p + msg->front.iov_len; 3967a02a946dSIlya Dryomov u8 struct_v; 3968a02a946dSIlya Dryomov u32 struct_len; 3969a02a946dSIlya Dryomov int ret; 3970a02a946dSIlya Dryomov 3971a02a946dSIlya Dryomov ret = ceph_start_decoding(&p, end, 1, "spg_t", &struct_v, &struct_len); 3972a02a946dSIlya Dryomov if (ret) 3973a02a946dSIlya Dryomov return ret; 3974a02a946dSIlya Dryomov 3975a02a946dSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->spgid.pgid); 3976a02a946dSIlya Dryomov if (ret) 3977a02a946dSIlya Dryomov return ret; 3978a02a946dSIlya Dryomov 3979a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->spgid.shard, e_inval); 3980a02a946dSIlya Dryomov ceph_decode_32_safe(&p, end, m->map_epoch, e_inval); 3981a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->op, e_inval); 3982a02a946dSIlya Dryomov ceph_decode_64_safe(&p, end, m->id, e_inval); 3983a02a946dSIlya Dryomov 3984a02a946dSIlya Dryomov m->begin = kzalloc(sizeof(*m->begin), GFP_NOIO); 3985a02a946dSIlya Dryomov if (!m->begin) 3986a02a946dSIlya Dryomov return -ENOMEM; 3987a02a946dSIlya Dryomov 3988a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->begin); 3989a02a946dSIlya Dryomov if (ret) { 3990a02a946dSIlya Dryomov free_hoid(m->begin); 3991a02a946dSIlya Dryomov return ret; 3992a02a946dSIlya Dryomov } 3993a02a946dSIlya Dryomov 3994a02a946dSIlya Dryomov m->end = kzalloc(sizeof(*m->end), GFP_NOIO); 3995a02a946dSIlya Dryomov if (!m->end) { 3996a02a946dSIlya Dryomov free_hoid(m->begin); 3997a02a946dSIlya Dryomov return -ENOMEM; 3998a02a946dSIlya Dryomov } 3999a02a946dSIlya Dryomov 4000a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->end); 4001a02a946dSIlya Dryomov if (ret) { 4002a02a946dSIlya Dryomov free_hoid(m->begin); 4003a02a946dSIlya Dryomov free_hoid(m->end); 4004a02a946dSIlya Dryomov return ret; 4005a02a946dSIlya Dryomov } 4006a02a946dSIlya Dryomov 4007a02a946dSIlya Dryomov return 0; 4008a02a946dSIlya Dryomov 4009a02a946dSIlya Dryomov e_inval: 4010a02a946dSIlya Dryomov return -EINVAL; 4011a02a946dSIlya Dryomov } 4012a02a946dSIlya Dryomov 4013a02a946dSIlya Dryomov static struct ceph_msg *create_backoff_message( 4014a02a946dSIlya Dryomov const struct ceph_osd_backoff *backoff, 4015a02a946dSIlya Dryomov u32 map_epoch) 4016a02a946dSIlya Dryomov { 4017a02a946dSIlya Dryomov struct ceph_msg *msg; 4018a02a946dSIlya Dryomov void *p, *end; 4019a02a946dSIlya Dryomov int msg_size; 4020a02a946dSIlya Dryomov 4021a02a946dSIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 4022a02a946dSIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 4023a02a946dSIlya Dryomov msg_size += 4 + 1 + 8; /* map_epoch, op, id */ 4024a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4025a02a946dSIlya Dryomov hoid_encoding_size(backoff->begin); 4026a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4027a02a946dSIlya Dryomov hoid_encoding_size(backoff->end); 4028a02a946dSIlya Dryomov 4029a02a946dSIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_BACKOFF, msg_size, GFP_NOIO, true); 4030a02a946dSIlya Dryomov if (!msg) 4031a02a946dSIlya Dryomov return NULL; 4032a02a946dSIlya Dryomov 4033a02a946dSIlya Dryomov p = msg->front.iov_base; 4034a02a946dSIlya Dryomov end = p + msg->front_alloc_len; 4035a02a946dSIlya Dryomov 4036a02a946dSIlya Dryomov encode_spgid(&p, &backoff->spgid); 4037a02a946dSIlya Dryomov ceph_encode_32(&p, map_epoch); 4038a02a946dSIlya Dryomov ceph_encode_8(&p, CEPH_OSD_BACKOFF_OP_ACK_BLOCK); 4039a02a946dSIlya Dryomov ceph_encode_64(&p, backoff->id); 4040a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->begin); 4041a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->end); 4042a02a946dSIlya Dryomov BUG_ON(p != end); 4043a02a946dSIlya Dryomov 4044a02a946dSIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 4045a02a946dSIlya Dryomov msg->hdr.version = cpu_to_le16(1); /* MOSDBackoff v1 */ 4046a02a946dSIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 4047a02a946dSIlya Dryomov 4048a02a946dSIlya Dryomov return msg; 4049a02a946dSIlya Dryomov } 4050a02a946dSIlya Dryomov 4051a02a946dSIlya Dryomov static void handle_backoff_block(struct ceph_osd *osd, struct MOSDBackoff *m) 4052a02a946dSIlya Dryomov { 4053a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4054a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4055a02a946dSIlya Dryomov struct ceph_msg *msg; 4056a02a946dSIlya Dryomov 4057a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4058a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4059a02a946dSIlya Dryomov 4060a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &m->spgid); 4061a02a946dSIlya Dryomov if (!spg) { 4062a02a946dSIlya Dryomov spg = alloc_spg_mapping(); 4063a02a946dSIlya Dryomov if (!spg) { 4064a02a946dSIlya Dryomov pr_err("%s failed to allocate spg\n", __func__); 4065a02a946dSIlya Dryomov return; 4066a02a946dSIlya Dryomov } 4067a02a946dSIlya Dryomov spg->spgid = m->spgid; /* struct */ 4068a02a946dSIlya Dryomov insert_spg_mapping(&osd->o_backoff_mappings, spg); 4069a02a946dSIlya Dryomov } 4070a02a946dSIlya Dryomov 4071a02a946dSIlya Dryomov backoff = alloc_backoff(); 4072a02a946dSIlya Dryomov if (!backoff) { 4073a02a946dSIlya Dryomov pr_err("%s failed to allocate backoff\n", __func__); 4074a02a946dSIlya Dryomov return; 4075a02a946dSIlya Dryomov } 4076a02a946dSIlya Dryomov backoff->spgid = m->spgid; /* struct */ 4077a02a946dSIlya Dryomov backoff->id = m->id; 4078a02a946dSIlya Dryomov backoff->begin = m->begin; 4079a02a946dSIlya Dryomov m->begin = NULL; /* backoff now owns this */ 4080a02a946dSIlya Dryomov backoff->end = m->end; 4081a02a946dSIlya Dryomov m->end = NULL; /* ditto */ 4082a02a946dSIlya Dryomov 4083a02a946dSIlya Dryomov insert_backoff(&spg->backoffs, backoff); 4084a02a946dSIlya Dryomov insert_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4085a02a946dSIlya Dryomov 4086a02a946dSIlya Dryomov /* 4087a02a946dSIlya Dryomov * Ack with original backoff's epoch so that the OSD can 4088a02a946dSIlya Dryomov * discard this if there was a PG split. 4089a02a946dSIlya Dryomov */ 4090a02a946dSIlya Dryomov msg = create_backoff_message(backoff, m->map_epoch); 4091a02a946dSIlya Dryomov if (!msg) { 4092a02a946dSIlya Dryomov pr_err("%s failed to allocate msg\n", __func__); 4093a02a946dSIlya Dryomov return; 4094a02a946dSIlya Dryomov } 4095a02a946dSIlya Dryomov ceph_con_send(&osd->o_con, msg); 4096a02a946dSIlya Dryomov } 4097a02a946dSIlya Dryomov 4098a02a946dSIlya Dryomov static bool target_contained_by(const struct ceph_osd_request_target *t, 4099a02a946dSIlya Dryomov const struct ceph_hobject_id *begin, 4100a02a946dSIlya Dryomov const struct ceph_hobject_id *end) 4101a02a946dSIlya Dryomov { 4102a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 4103a02a946dSIlya Dryomov int cmp; 4104a02a946dSIlya Dryomov 4105a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, t); 4106a02a946dSIlya Dryomov cmp = hoid_compare(&hoid, begin); 4107a02a946dSIlya Dryomov return !cmp || (cmp > 0 && hoid_compare(&hoid, end) < 0); 4108a02a946dSIlya Dryomov } 4109a02a946dSIlya Dryomov 4110a02a946dSIlya Dryomov static void handle_backoff_unblock(struct ceph_osd *osd, 4111a02a946dSIlya Dryomov const struct MOSDBackoff *m) 4112a02a946dSIlya Dryomov { 4113a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4114a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4115a02a946dSIlya Dryomov struct rb_node *n; 4116a02a946dSIlya Dryomov 4117a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4118a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4119a02a946dSIlya Dryomov 4120a02a946dSIlya Dryomov backoff = lookup_backoff_by_id(&osd->o_backoffs_by_id, m->id); 4121a02a946dSIlya Dryomov if (!backoff) { 4122a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu backoff dne\n", 4123a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4124a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4125a02a946dSIlya Dryomov return; 4126a02a946dSIlya Dryomov } 4127a02a946dSIlya Dryomov 4128a02a946dSIlya Dryomov if (hoid_compare(backoff->begin, m->begin) && 4129a02a946dSIlya Dryomov hoid_compare(backoff->end, m->end)) { 4130a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu bad range?\n", 4131a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4132a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4133a02a946dSIlya Dryomov /* unblock it anyway... */ 4134a02a946dSIlya Dryomov } 4135a02a946dSIlya Dryomov 4136a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &backoff->spgid); 4137a02a946dSIlya Dryomov BUG_ON(!spg); 4138a02a946dSIlya Dryomov 4139a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 4140a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4141a02a946dSIlya Dryomov free_backoff(backoff); 4142a02a946dSIlya Dryomov 4143a02a946dSIlya Dryomov if (RB_EMPTY_ROOT(&spg->backoffs)) { 4144a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 4145a02a946dSIlya Dryomov free_spg_mapping(spg); 4146a02a946dSIlya Dryomov } 4147a02a946dSIlya Dryomov 4148a02a946dSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 4149a02a946dSIlya Dryomov struct ceph_osd_request *req = 4150a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 4151a02a946dSIlya Dryomov 4152a02a946dSIlya Dryomov if (!ceph_spg_compare(&req->r_t.spgid, &m->spgid)) { 4153a02a946dSIlya Dryomov /* 4154a02a946dSIlya Dryomov * Match against @m, not @backoff -- the PG may 4155a02a946dSIlya Dryomov * have split on the OSD. 4156a02a946dSIlya Dryomov */ 4157a02a946dSIlya Dryomov if (target_contained_by(&req->r_t, m->begin, m->end)) { 4158a02a946dSIlya Dryomov /* 4159a02a946dSIlya Dryomov * If no other installed backoff applies, 4160a02a946dSIlya Dryomov * resend. 4161a02a946dSIlya Dryomov */ 4162a02a946dSIlya Dryomov send_request(req); 4163a02a946dSIlya Dryomov } 4164a02a946dSIlya Dryomov } 4165a02a946dSIlya Dryomov } 4166a02a946dSIlya Dryomov } 4167a02a946dSIlya Dryomov 4168a02a946dSIlya Dryomov static void handle_backoff(struct ceph_osd *osd, struct ceph_msg *msg) 4169a02a946dSIlya Dryomov { 4170a02a946dSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 4171a02a946dSIlya Dryomov struct MOSDBackoff m; 4172a02a946dSIlya Dryomov int ret; 4173a02a946dSIlya Dryomov 4174a02a946dSIlya Dryomov down_read(&osdc->lock); 4175a02a946dSIlya Dryomov if (!osd_registered(osd)) { 4176a02a946dSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 4177a02a946dSIlya Dryomov up_read(&osdc->lock); 4178a02a946dSIlya Dryomov return; 4179a02a946dSIlya Dryomov } 4180a02a946dSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 4181a02a946dSIlya Dryomov 4182a02a946dSIlya Dryomov mutex_lock(&osd->lock); 4183a02a946dSIlya Dryomov ret = decode_MOSDBackoff(msg, &m); 4184a02a946dSIlya Dryomov if (ret) { 4185a02a946dSIlya Dryomov pr_err("failed to decode MOSDBackoff: %d\n", ret); 4186a02a946dSIlya Dryomov ceph_msg_dump(msg); 4187a02a946dSIlya Dryomov goto out_unlock; 4188a02a946dSIlya Dryomov } 4189a02a946dSIlya Dryomov 4190a02a946dSIlya Dryomov switch (m.op) { 4191a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_BLOCK: 4192a02a946dSIlya Dryomov handle_backoff_block(osd, &m); 4193a02a946dSIlya Dryomov break; 4194a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_UNBLOCK: 4195a02a946dSIlya Dryomov handle_backoff_unblock(osd, &m); 4196a02a946dSIlya Dryomov break; 4197a02a946dSIlya Dryomov default: 4198a02a946dSIlya Dryomov pr_err("%s osd%d unknown op %d\n", __func__, osd->o_osd, m.op); 4199a02a946dSIlya Dryomov } 4200a02a946dSIlya Dryomov 4201a02a946dSIlya Dryomov free_hoid(m.begin); 4202a02a946dSIlya Dryomov free_hoid(m.end); 4203a02a946dSIlya Dryomov 4204a02a946dSIlya Dryomov out_unlock: 4205a02a946dSIlya Dryomov mutex_unlock(&osd->lock); 4206a02a946dSIlya Dryomov up_read(&osdc->lock); 4207a02a946dSIlya Dryomov } 4208a02a946dSIlya Dryomov 42093d14c5d2SYehuda Sadeh /* 4210a40c4f10SYehuda Sadeh * Process osd watch notifications 4211a40c4f10SYehuda Sadeh */ 42123c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 42133c663bbdSAlex Elder struct ceph_msg *msg) 4214a40c4f10SYehuda Sadeh { 4215922dab61SIlya Dryomov void *p = msg->front.iov_base; 4216922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 4217922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4218922dab61SIlya Dryomov struct linger_work *lwork; 4219922dab61SIlya Dryomov u8 proto_ver, opcode; 4220922dab61SIlya Dryomov u64 cookie, notify_id; 4221922dab61SIlya Dryomov u64 notifier_id = 0; 422219079203SIlya Dryomov s32 return_code = 0; 4223922dab61SIlya Dryomov void *payload = NULL; 4224922dab61SIlya Dryomov u32 payload_len = 0; 4225a40c4f10SYehuda Sadeh 4226a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 4227a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 4228a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 4229922dab61SIlya Dryomov p += 8; /* skip ver */ 4230a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 4231a40c4f10SYehuda Sadeh 4232922dab61SIlya Dryomov if (proto_ver >= 1) { 4233922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 4234922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 4235922dab61SIlya Dryomov payload = p; 4236922dab61SIlya Dryomov p += payload_len; 4237a40c4f10SYehuda Sadeh } 4238a40c4f10SYehuda Sadeh 4239922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 424019079203SIlya Dryomov ceph_decode_32_safe(&p, end, return_code, bad); 4241922dab61SIlya Dryomov 4242922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 4243922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 4244922dab61SIlya Dryomov 4245922dab61SIlya Dryomov down_read(&osdc->lock); 4246922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 4247922dab61SIlya Dryomov if (!lreq) { 4248922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 4249922dab61SIlya Dryomov cookie); 4250922dab61SIlya Dryomov goto out_unlock_osdc; 4251922dab61SIlya Dryomov } 4252922dab61SIlya Dryomov 4253922dab61SIlya Dryomov mutex_lock(&lreq->lock); 425419079203SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, 425519079203SIlya Dryomov opcode, cookie, lreq, lreq->is_watch); 4256922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 4257922dab61SIlya Dryomov if (!lreq->last_error) { 4258922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 4259922dab61SIlya Dryomov queue_watch_error(lreq); 4260922dab61SIlya Dryomov } 426119079203SIlya Dryomov } else if (!lreq->is_watch) { 426219079203SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ 426319079203SIlya Dryomov if (lreq->notify_id && lreq->notify_id != notify_id) { 426419079203SIlya Dryomov dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, 426519079203SIlya Dryomov lreq->notify_id, notify_id); 426619079203SIlya Dryomov } else if (!completion_done(&lreq->notify_finish_wait)) { 426719079203SIlya Dryomov struct ceph_msg_data *data = 426819079203SIlya Dryomov list_first_entry_or_null(&msg->data, 426919079203SIlya Dryomov struct ceph_msg_data, 427019079203SIlya Dryomov links); 427119079203SIlya Dryomov 427219079203SIlya Dryomov if (data) { 427319079203SIlya Dryomov if (lreq->preply_pages) { 427419079203SIlya Dryomov WARN_ON(data->type != 427519079203SIlya Dryomov CEPH_MSG_DATA_PAGES); 427619079203SIlya Dryomov *lreq->preply_pages = data->pages; 427719079203SIlya Dryomov *lreq->preply_len = data->length; 427819079203SIlya Dryomov } else { 427919079203SIlya Dryomov ceph_release_page_vector(data->pages, 428019079203SIlya Dryomov calc_pages_for(0, data->length)); 428119079203SIlya Dryomov } 428219079203SIlya Dryomov } 428319079203SIlya Dryomov lreq->notify_finish_error = return_code; 428419079203SIlya Dryomov complete_all(&lreq->notify_finish_wait); 428519079203SIlya Dryomov } 4286922dab61SIlya Dryomov } else { 4287922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 4288922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 4289922dab61SIlya Dryomov if (!lwork) { 4290922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 4291922dab61SIlya Dryomov goto out_unlock_lreq; 4292922dab61SIlya Dryomov } 4293922dab61SIlya Dryomov 4294922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 4295922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 4296922dab61SIlya Dryomov lwork->notify.payload = payload; 4297922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 4298922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 4299922dab61SIlya Dryomov lwork_queue(lwork); 4300922dab61SIlya Dryomov } 4301922dab61SIlya Dryomov 4302922dab61SIlya Dryomov out_unlock_lreq: 4303922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 4304922dab61SIlya Dryomov out_unlock_osdc: 4305922dab61SIlya Dryomov up_read(&osdc->lock); 4306a40c4f10SYehuda Sadeh return; 4307a40c4f10SYehuda Sadeh 4308a40c4f10SYehuda Sadeh bad: 4309a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 4310a40c4f10SYehuda Sadeh } 4311a40c4f10SYehuda Sadeh 4312a40c4f10SYehuda Sadeh /* 43133d14c5d2SYehuda Sadeh * Register request, send initial attempt. 43143d14c5d2SYehuda Sadeh */ 43153d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 43163d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 43173d14c5d2SYehuda Sadeh bool nofail) 43183d14c5d2SYehuda Sadeh { 43195aea3dcdSIlya Dryomov down_read(&osdc->lock); 43205aea3dcdSIlya Dryomov submit_request(req, false); 43215aea3dcdSIlya Dryomov up_read(&osdc->lock); 43223d14c5d2SYehuda Sadeh 43235aea3dcdSIlya Dryomov return 0; 43243d14c5d2SYehuda Sadeh } 43253d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 43263d14c5d2SYehuda Sadeh 43273d14c5d2SYehuda Sadeh /* 4328c297eb42SIlya Dryomov * Unregister a registered request. The request is not completed: 4329c297eb42SIlya Dryomov * ->r_result isn't set and __complete_request() isn't called. 4330c9f9b93dSIlya Dryomov */ 4331c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 4332c9f9b93dSIlya Dryomov { 4333c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 4334c9f9b93dSIlya Dryomov 43355aea3dcdSIlya Dryomov down_write(&osdc->lock); 43365aea3dcdSIlya Dryomov if (req->r_osd) 43375aea3dcdSIlya Dryomov cancel_request(req); 43385aea3dcdSIlya Dryomov up_write(&osdc->lock); 4339c9f9b93dSIlya Dryomov } 4340c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 4341c9f9b93dSIlya Dryomov 4342c9f9b93dSIlya Dryomov /* 434342b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 434442b06965SIlya Dryomov */ 434542b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 434642b06965SIlya Dryomov unsigned long timeout) 434742b06965SIlya Dryomov { 434842b06965SIlya Dryomov long left; 434942b06965SIlya Dryomov 435042b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 43510e76abf2SYan, Zheng left = wait_for_completion_killable_timeout(&req->r_completion, 435242b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 435342b06965SIlya Dryomov if (left <= 0) { 435442b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 435542b06965SIlya Dryomov ceph_osdc_cancel_request(req); 435642b06965SIlya Dryomov } else { 435742b06965SIlya Dryomov left = req->r_result; /* completed */ 435842b06965SIlya Dryomov } 435942b06965SIlya Dryomov 436042b06965SIlya Dryomov return left; 436142b06965SIlya Dryomov } 436242b06965SIlya Dryomov 436342b06965SIlya Dryomov /* 43643d14c5d2SYehuda Sadeh * wait for a request to complete 43653d14c5d2SYehuda Sadeh */ 43663d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 43673d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 43683d14c5d2SYehuda Sadeh { 436942b06965SIlya Dryomov return wait_request_timeout(req, 0); 43703d14c5d2SYehuda Sadeh } 43713d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 43723d14c5d2SYehuda Sadeh 43733d14c5d2SYehuda Sadeh /* 43743d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 43753d14c5d2SYehuda Sadeh */ 43763d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 43773d14c5d2SYehuda Sadeh { 43785aea3dcdSIlya Dryomov struct rb_node *n, *p; 43795aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 43803d14c5d2SYehuda Sadeh 43815aea3dcdSIlya Dryomov again: 43825aea3dcdSIlya Dryomov down_read(&osdc->lock); 43835aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 43845aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 43855aea3dcdSIlya Dryomov 43865aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 43875aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 43885aea3dcdSIlya Dryomov struct ceph_osd_request *req = 43895aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 43905aea3dcdSIlya Dryomov 43913d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 43923d14c5d2SYehuda Sadeh break; 43933d14c5d2SYehuda Sadeh 43945aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 43953d14c5d2SYehuda Sadeh continue; 43963d14c5d2SYehuda Sadeh 43973d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 43985aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 43995aea3dcdSIlya Dryomov up_read(&osdc->lock); 44005aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 44015aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 4402b18b9550SIlya Dryomov wait_for_completion(&req->r_completion); 44033d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 44045aea3dcdSIlya Dryomov goto again; 44053d14c5d2SYehuda Sadeh } 44065aea3dcdSIlya Dryomov 44075aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 44085aea3dcdSIlya Dryomov } 44095aea3dcdSIlya Dryomov 44105aea3dcdSIlya Dryomov up_read(&osdc->lock); 44115aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 44123d14c5d2SYehuda Sadeh } 44133d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 44143d14c5d2SYehuda Sadeh 4415922dab61SIlya Dryomov static struct ceph_osd_request * 4416922dab61SIlya Dryomov alloc_linger_request(struct ceph_osd_linger_request *lreq) 4417922dab61SIlya Dryomov { 4418922dab61SIlya Dryomov struct ceph_osd_request *req; 4419922dab61SIlya Dryomov 4420922dab61SIlya Dryomov req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); 4421922dab61SIlya Dryomov if (!req) 4422922dab61SIlya Dryomov return NULL; 4423922dab61SIlya Dryomov 4424922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4425922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 4426922dab61SIlya Dryomov 4427922dab61SIlya Dryomov if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { 4428922dab61SIlya Dryomov ceph_osdc_put_request(req); 4429922dab61SIlya Dryomov return NULL; 4430922dab61SIlya Dryomov } 4431922dab61SIlya Dryomov 4432922dab61SIlya Dryomov return req; 4433922dab61SIlya Dryomov } 4434922dab61SIlya Dryomov 4435922dab61SIlya Dryomov /* 4436922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 4437922dab61SIlya Dryomov */ 4438922dab61SIlya Dryomov struct ceph_osd_linger_request * 4439922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 4440922dab61SIlya Dryomov struct ceph_object_id *oid, 4441922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4442922dab61SIlya Dryomov rados_watchcb2_t wcb, 4443922dab61SIlya Dryomov rados_watcherrcb_t errcb, 4444922dab61SIlya Dryomov void *data) 4445922dab61SIlya Dryomov { 4446922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4447922dab61SIlya Dryomov int ret; 4448922dab61SIlya Dryomov 4449922dab61SIlya Dryomov lreq = linger_alloc(osdc); 4450922dab61SIlya Dryomov if (!lreq) 4451922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 4452922dab61SIlya Dryomov 445319079203SIlya Dryomov lreq->is_watch = true; 4454922dab61SIlya Dryomov lreq->wcb = wcb; 4455922dab61SIlya Dryomov lreq->errcb = errcb; 4456922dab61SIlya Dryomov lreq->data = data; 4457b07d3c4bSIlya Dryomov lreq->watch_valid_thru = jiffies; 4458922dab61SIlya Dryomov 4459922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 4460922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 446154ea0046SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE; 44621134e091SDeepa Dinamani ktime_get_real_ts(&lreq->mtime); 4463922dab61SIlya Dryomov 4464922dab61SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 4465922dab61SIlya Dryomov if (!lreq->reg_req) { 4466922dab61SIlya Dryomov ret = -ENOMEM; 4467922dab61SIlya Dryomov goto err_put_lreq; 4468922dab61SIlya Dryomov } 4469922dab61SIlya Dryomov 4470922dab61SIlya Dryomov lreq->ping_req = alloc_linger_request(lreq); 4471922dab61SIlya Dryomov if (!lreq->ping_req) { 4472922dab61SIlya Dryomov ret = -ENOMEM; 4473922dab61SIlya Dryomov goto err_put_lreq; 4474922dab61SIlya Dryomov } 4475922dab61SIlya Dryomov 4476922dab61SIlya Dryomov down_write(&osdc->lock); 4477922dab61SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 4478922dab61SIlya Dryomov osd_req_op_watch_init(lreq->reg_req, 0, lreq->linger_id, 4479922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_WATCH); 4480922dab61SIlya Dryomov osd_req_op_watch_init(lreq->ping_req, 0, lreq->linger_id, 4481922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_PING); 4482922dab61SIlya Dryomov linger_submit(lreq); 4483922dab61SIlya Dryomov up_write(&osdc->lock); 4484922dab61SIlya Dryomov 4485922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 4486922dab61SIlya Dryomov if (ret) { 4487922dab61SIlya Dryomov linger_cancel(lreq); 4488922dab61SIlya Dryomov goto err_put_lreq; 4489922dab61SIlya Dryomov } 4490922dab61SIlya Dryomov 4491922dab61SIlya Dryomov return lreq; 4492922dab61SIlya Dryomov 4493922dab61SIlya Dryomov err_put_lreq: 4494922dab61SIlya Dryomov linger_put(lreq); 4495922dab61SIlya Dryomov return ERR_PTR(ret); 4496922dab61SIlya Dryomov } 4497922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 4498922dab61SIlya Dryomov 4499922dab61SIlya Dryomov /* 4500922dab61SIlya Dryomov * Releases a ref. 4501922dab61SIlya Dryomov * 4502922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 4503922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 4504922dab61SIlya Dryomov * with mount_timeout"). 4505922dab61SIlya Dryomov */ 4506922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 4507922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 4508922dab61SIlya Dryomov { 4509922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 4510922dab61SIlya Dryomov struct ceph_osd_request *req; 4511922dab61SIlya Dryomov int ret; 4512922dab61SIlya Dryomov 4513922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4514922dab61SIlya Dryomov if (!req) 4515922dab61SIlya Dryomov return -ENOMEM; 4516922dab61SIlya Dryomov 4517922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4518922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 451954ea0046SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE; 45201134e091SDeepa Dinamani ktime_get_real_ts(&req->r_mtime); 4521922dab61SIlya Dryomov osd_req_op_watch_init(req, 0, lreq->linger_id, 4522922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_UNWATCH); 4523922dab61SIlya Dryomov 4524922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4525922dab61SIlya Dryomov if (ret) 4526922dab61SIlya Dryomov goto out_put_req; 4527922dab61SIlya Dryomov 4528922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 4529922dab61SIlya Dryomov linger_cancel(lreq); 4530922dab61SIlya Dryomov linger_put(lreq); 4531922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 4532922dab61SIlya Dryomov 4533922dab61SIlya Dryomov out_put_req: 4534922dab61SIlya Dryomov ceph_osdc_put_request(req); 4535922dab61SIlya Dryomov return ret; 4536922dab61SIlya Dryomov } 4537922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 4538922dab61SIlya Dryomov 4539922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 4540922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 4541922dab61SIlya Dryomov size_t payload_len) 4542922dab61SIlya Dryomov { 4543922dab61SIlya Dryomov struct ceph_osd_req_op *op; 4544922dab61SIlya Dryomov struct ceph_pagelist *pl; 4545922dab61SIlya Dryomov int ret; 4546922dab61SIlya Dryomov 4547922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 4548922dab61SIlya Dryomov 4549922dab61SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 4550922dab61SIlya Dryomov if (!pl) 4551922dab61SIlya Dryomov return -ENOMEM; 4552922dab61SIlya Dryomov 4553922dab61SIlya Dryomov ceph_pagelist_init(pl); 4554922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 4555922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 4556922dab61SIlya Dryomov if (payload) { 4557922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 4558922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 4559922dab61SIlya Dryomov } else { 4560922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 4561922dab61SIlya Dryomov } 4562922dab61SIlya Dryomov if (ret) { 4563922dab61SIlya Dryomov ceph_pagelist_release(pl); 4564922dab61SIlya Dryomov return -ENOMEM; 4565922dab61SIlya Dryomov } 4566922dab61SIlya Dryomov 4567922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 4568922dab61SIlya Dryomov op->indata_len = pl->length; 4569922dab61SIlya Dryomov return 0; 4570922dab61SIlya Dryomov } 4571922dab61SIlya Dryomov 4572922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 4573922dab61SIlya Dryomov struct ceph_object_id *oid, 4574922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4575922dab61SIlya Dryomov u64 notify_id, 4576922dab61SIlya Dryomov u64 cookie, 4577922dab61SIlya Dryomov void *payload, 4578922dab61SIlya Dryomov size_t payload_len) 4579922dab61SIlya Dryomov { 4580922dab61SIlya Dryomov struct ceph_osd_request *req; 4581922dab61SIlya Dryomov int ret; 4582922dab61SIlya Dryomov 4583922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4584922dab61SIlya Dryomov if (!req) 4585922dab61SIlya Dryomov return -ENOMEM; 4586922dab61SIlya Dryomov 4587922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 4588922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 4589922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 4590922dab61SIlya Dryomov 4591922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4592922dab61SIlya Dryomov if (ret) 4593922dab61SIlya Dryomov goto out_put_req; 4594922dab61SIlya Dryomov 4595922dab61SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 4596922dab61SIlya Dryomov payload_len); 4597922dab61SIlya Dryomov if (ret) 4598922dab61SIlya Dryomov goto out_put_req; 4599922dab61SIlya Dryomov 4600922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 4601922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 4602922dab61SIlya Dryomov 4603922dab61SIlya Dryomov out_put_req: 4604922dab61SIlya Dryomov ceph_osdc_put_request(req); 4605922dab61SIlya Dryomov return ret; 4606922dab61SIlya Dryomov } 4607922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 4608922dab61SIlya Dryomov 460919079203SIlya Dryomov static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, 461019079203SIlya Dryomov u64 cookie, u32 prot_ver, u32 timeout, 461119079203SIlya Dryomov void *payload, size_t payload_len) 461219079203SIlya Dryomov { 461319079203SIlya Dryomov struct ceph_osd_req_op *op; 461419079203SIlya Dryomov struct ceph_pagelist *pl; 461519079203SIlya Dryomov int ret; 461619079203SIlya Dryomov 461719079203SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); 461819079203SIlya Dryomov op->notify.cookie = cookie; 461919079203SIlya Dryomov 462019079203SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 462119079203SIlya Dryomov if (!pl) 462219079203SIlya Dryomov return -ENOMEM; 462319079203SIlya Dryomov 462419079203SIlya Dryomov ceph_pagelist_init(pl); 462519079203SIlya Dryomov ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ 462619079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, timeout); 462719079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 462819079203SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 462919079203SIlya Dryomov if (ret) { 463019079203SIlya Dryomov ceph_pagelist_release(pl); 463119079203SIlya Dryomov return -ENOMEM; 463219079203SIlya Dryomov } 463319079203SIlya Dryomov 463419079203SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify.request_data, pl); 463519079203SIlya Dryomov op->indata_len = pl->length; 463619079203SIlya Dryomov return 0; 463719079203SIlya Dryomov } 463819079203SIlya Dryomov 463919079203SIlya Dryomov /* 464019079203SIlya Dryomov * @timeout: in seconds 464119079203SIlya Dryomov * 464219079203SIlya Dryomov * @preply_{pages,len} are initialized both on success and error. 464319079203SIlya Dryomov * The caller is responsible for: 464419079203SIlya Dryomov * 464519079203SIlya Dryomov * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) 464619079203SIlya Dryomov */ 464719079203SIlya Dryomov int ceph_osdc_notify(struct ceph_osd_client *osdc, 464819079203SIlya Dryomov struct ceph_object_id *oid, 464919079203SIlya Dryomov struct ceph_object_locator *oloc, 465019079203SIlya Dryomov void *payload, 465119079203SIlya Dryomov size_t payload_len, 465219079203SIlya Dryomov u32 timeout, 465319079203SIlya Dryomov struct page ***preply_pages, 465419079203SIlya Dryomov size_t *preply_len) 465519079203SIlya Dryomov { 465619079203SIlya Dryomov struct ceph_osd_linger_request *lreq; 465719079203SIlya Dryomov struct page **pages; 465819079203SIlya Dryomov int ret; 465919079203SIlya Dryomov 466019079203SIlya Dryomov WARN_ON(!timeout); 466119079203SIlya Dryomov if (preply_pages) { 466219079203SIlya Dryomov *preply_pages = NULL; 466319079203SIlya Dryomov *preply_len = 0; 466419079203SIlya Dryomov } 466519079203SIlya Dryomov 466619079203SIlya Dryomov lreq = linger_alloc(osdc); 466719079203SIlya Dryomov if (!lreq) 466819079203SIlya Dryomov return -ENOMEM; 466919079203SIlya Dryomov 467019079203SIlya Dryomov lreq->preply_pages = preply_pages; 467119079203SIlya Dryomov lreq->preply_len = preply_len; 467219079203SIlya Dryomov 467319079203SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 467419079203SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 467519079203SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_READ; 467619079203SIlya Dryomov 467719079203SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 467819079203SIlya Dryomov if (!lreq->reg_req) { 467919079203SIlya Dryomov ret = -ENOMEM; 468019079203SIlya Dryomov goto out_put_lreq; 468119079203SIlya Dryomov } 468219079203SIlya Dryomov 468319079203SIlya Dryomov /* for notify_id */ 468419079203SIlya Dryomov pages = ceph_alloc_page_vector(1, GFP_NOIO); 468519079203SIlya Dryomov if (IS_ERR(pages)) { 468619079203SIlya Dryomov ret = PTR_ERR(pages); 468719079203SIlya Dryomov goto out_put_lreq; 468819079203SIlya Dryomov } 468919079203SIlya Dryomov 469019079203SIlya Dryomov down_write(&osdc->lock); 469119079203SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 469219079203SIlya Dryomov ret = osd_req_op_notify_init(lreq->reg_req, 0, lreq->linger_id, 1, 469319079203SIlya Dryomov timeout, payload, payload_len); 469419079203SIlya Dryomov if (ret) { 469519079203SIlya Dryomov linger_unregister(lreq); 469619079203SIlya Dryomov up_write(&osdc->lock); 469719079203SIlya Dryomov ceph_release_page_vector(pages, 1); 469819079203SIlya Dryomov goto out_put_lreq; 469919079203SIlya Dryomov } 470019079203SIlya Dryomov ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, 470119079203SIlya Dryomov response_data), 470219079203SIlya Dryomov pages, PAGE_SIZE, 0, false, true); 470319079203SIlya Dryomov linger_submit(lreq); 470419079203SIlya Dryomov up_write(&osdc->lock); 470519079203SIlya Dryomov 470619079203SIlya Dryomov ret = linger_reg_commit_wait(lreq); 470719079203SIlya Dryomov if (!ret) 470819079203SIlya Dryomov ret = linger_notify_finish_wait(lreq); 470919079203SIlya Dryomov else 471019079203SIlya Dryomov dout("lreq %p failed to initiate notify %d\n", lreq, ret); 471119079203SIlya Dryomov 471219079203SIlya Dryomov linger_cancel(lreq); 471319079203SIlya Dryomov out_put_lreq: 471419079203SIlya Dryomov linger_put(lreq); 471519079203SIlya Dryomov return ret; 471619079203SIlya Dryomov } 471719079203SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify); 471819079203SIlya Dryomov 47193d14c5d2SYehuda Sadeh /* 4720b07d3c4bSIlya Dryomov * Return the number of milliseconds since the watch was last 4721b07d3c4bSIlya Dryomov * confirmed, or an error. If there is an error, the watch is no 4722b07d3c4bSIlya Dryomov * longer valid, and should be destroyed with ceph_osdc_unwatch(). 4723b07d3c4bSIlya Dryomov */ 4724b07d3c4bSIlya Dryomov int ceph_osdc_watch_check(struct ceph_osd_client *osdc, 4725b07d3c4bSIlya Dryomov struct ceph_osd_linger_request *lreq) 4726b07d3c4bSIlya Dryomov { 4727b07d3c4bSIlya Dryomov unsigned long stamp, age; 4728b07d3c4bSIlya Dryomov int ret; 4729b07d3c4bSIlya Dryomov 4730b07d3c4bSIlya Dryomov down_read(&osdc->lock); 4731b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 4732b07d3c4bSIlya Dryomov stamp = lreq->watch_valid_thru; 4733b07d3c4bSIlya Dryomov if (!list_empty(&lreq->pending_lworks)) { 4734b07d3c4bSIlya Dryomov struct linger_work *lwork = 4735b07d3c4bSIlya Dryomov list_first_entry(&lreq->pending_lworks, 4736b07d3c4bSIlya Dryomov struct linger_work, 4737b07d3c4bSIlya Dryomov pending_item); 4738b07d3c4bSIlya Dryomov 4739b07d3c4bSIlya Dryomov if (time_before(lwork->queued_stamp, stamp)) 4740b07d3c4bSIlya Dryomov stamp = lwork->queued_stamp; 4741b07d3c4bSIlya Dryomov } 4742b07d3c4bSIlya Dryomov age = jiffies - stamp; 4743b07d3c4bSIlya Dryomov dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, 4744b07d3c4bSIlya Dryomov lreq, lreq->linger_id, age, lreq->last_error); 4745b07d3c4bSIlya Dryomov /* we are truncating to msecs, so return a safe upper bound */ 4746b07d3c4bSIlya Dryomov ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); 4747b07d3c4bSIlya Dryomov 4748b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 4749b07d3c4bSIlya Dryomov up_read(&osdc->lock); 4750b07d3c4bSIlya Dryomov return ret; 4751b07d3c4bSIlya Dryomov } 4752b07d3c4bSIlya Dryomov 4753a4ed38d7SDouglas Fuller static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) 4754a4ed38d7SDouglas Fuller { 4755a4ed38d7SDouglas Fuller u8 struct_v; 4756a4ed38d7SDouglas Fuller u32 struct_len; 4757a4ed38d7SDouglas Fuller int ret; 4758a4ed38d7SDouglas Fuller 4759a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 2, "watch_item_t", 4760a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4761a4ed38d7SDouglas Fuller if (ret) 4762a4ed38d7SDouglas Fuller return ret; 4763a4ed38d7SDouglas Fuller 4764a4ed38d7SDouglas Fuller ceph_decode_copy(p, &item->name, sizeof(item->name)); 4765a4ed38d7SDouglas Fuller item->cookie = ceph_decode_64(p); 4766a4ed38d7SDouglas Fuller *p += 4; /* skip timeout_seconds */ 4767a4ed38d7SDouglas Fuller if (struct_v >= 2) { 4768a4ed38d7SDouglas Fuller ceph_decode_copy(p, &item->addr, sizeof(item->addr)); 4769a4ed38d7SDouglas Fuller ceph_decode_addr(&item->addr); 4770a4ed38d7SDouglas Fuller } 4771a4ed38d7SDouglas Fuller 4772a4ed38d7SDouglas Fuller dout("%s %s%llu cookie %llu addr %s\n", __func__, 4773a4ed38d7SDouglas Fuller ENTITY_NAME(item->name), item->cookie, 4774a4ed38d7SDouglas Fuller ceph_pr_addr(&item->addr.in_addr)); 4775a4ed38d7SDouglas Fuller return 0; 4776a4ed38d7SDouglas Fuller } 4777a4ed38d7SDouglas Fuller 4778a4ed38d7SDouglas Fuller static int decode_watchers(void **p, void *end, 4779a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4780a4ed38d7SDouglas Fuller u32 *num_watchers) 4781a4ed38d7SDouglas Fuller { 4782a4ed38d7SDouglas Fuller u8 struct_v; 4783a4ed38d7SDouglas Fuller u32 struct_len; 4784a4ed38d7SDouglas Fuller int i; 4785a4ed38d7SDouglas Fuller int ret; 4786a4ed38d7SDouglas Fuller 4787a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t", 4788a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4789a4ed38d7SDouglas Fuller if (ret) 4790a4ed38d7SDouglas Fuller return ret; 4791a4ed38d7SDouglas Fuller 4792a4ed38d7SDouglas Fuller *num_watchers = ceph_decode_32(p); 4793a4ed38d7SDouglas Fuller *watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO); 4794a4ed38d7SDouglas Fuller if (!*watchers) 4795a4ed38d7SDouglas Fuller return -ENOMEM; 4796a4ed38d7SDouglas Fuller 4797a4ed38d7SDouglas Fuller for (i = 0; i < *num_watchers; i++) { 4798a4ed38d7SDouglas Fuller ret = decode_watcher(p, end, *watchers + i); 4799a4ed38d7SDouglas Fuller if (ret) { 4800a4ed38d7SDouglas Fuller kfree(*watchers); 4801a4ed38d7SDouglas Fuller return ret; 4802a4ed38d7SDouglas Fuller } 4803a4ed38d7SDouglas Fuller } 4804a4ed38d7SDouglas Fuller 4805a4ed38d7SDouglas Fuller return 0; 4806a4ed38d7SDouglas Fuller } 4807a4ed38d7SDouglas Fuller 4808a4ed38d7SDouglas Fuller /* 4809a4ed38d7SDouglas Fuller * On success, the caller is responsible for: 4810a4ed38d7SDouglas Fuller * 4811a4ed38d7SDouglas Fuller * kfree(watchers); 4812a4ed38d7SDouglas Fuller */ 4813a4ed38d7SDouglas Fuller int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, 4814a4ed38d7SDouglas Fuller struct ceph_object_id *oid, 4815a4ed38d7SDouglas Fuller struct ceph_object_locator *oloc, 4816a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4817a4ed38d7SDouglas Fuller u32 *num_watchers) 4818a4ed38d7SDouglas Fuller { 4819a4ed38d7SDouglas Fuller struct ceph_osd_request *req; 4820a4ed38d7SDouglas Fuller struct page **pages; 4821a4ed38d7SDouglas Fuller int ret; 4822a4ed38d7SDouglas Fuller 4823a4ed38d7SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4824a4ed38d7SDouglas Fuller if (!req) 4825a4ed38d7SDouglas Fuller return -ENOMEM; 4826a4ed38d7SDouglas Fuller 4827a4ed38d7SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 4828a4ed38d7SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 4829a4ed38d7SDouglas Fuller req->r_flags = CEPH_OSD_FLAG_READ; 4830a4ed38d7SDouglas Fuller 4831a4ed38d7SDouglas Fuller ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4832a4ed38d7SDouglas Fuller if (ret) 4833a4ed38d7SDouglas Fuller goto out_put_req; 4834a4ed38d7SDouglas Fuller 4835a4ed38d7SDouglas Fuller pages = ceph_alloc_page_vector(1, GFP_NOIO); 4836a4ed38d7SDouglas Fuller if (IS_ERR(pages)) { 4837a4ed38d7SDouglas Fuller ret = PTR_ERR(pages); 4838a4ed38d7SDouglas Fuller goto out_put_req; 4839a4ed38d7SDouglas Fuller } 4840a4ed38d7SDouglas Fuller 4841a4ed38d7SDouglas Fuller osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0); 4842a4ed38d7SDouglas Fuller ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers, 4843a4ed38d7SDouglas Fuller response_data), 4844a4ed38d7SDouglas Fuller pages, PAGE_SIZE, 0, false, true); 4845a4ed38d7SDouglas Fuller 4846a4ed38d7SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 4847a4ed38d7SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 4848a4ed38d7SDouglas Fuller if (ret >= 0) { 4849a4ed38d7SDouglas Fuller void *p = page_address(pages[0]); 4850a4ed38d7SDouglas Fuller void *const end = p + req->r_ops[0].outdata_len; 4851a4ed38d7SDouglas Fuller 4852a4ed38d7SDouglas Fuller ret = decode_watchers(&p, end, watchers, num_watchers); 4853a4ed38d7SDouglas Fuller } 4854a4ed38d7SDouglas Fuller 4855a4ed38d7SDouglas Fuller out_put_req: 4856a4ed38d7SDouglas Fuller ceph_osdc_put_request(req); 4857a4ed38d7SDouglas Fuller return ret; 4858a4ed38d7SDouglas Fuller } 4859a4ed38d7SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_list_watchers); 4860a4ed38d7SDouglas Fuller 4861b07d3c4bSIlya Dryomov /* 4862dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 4863dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 4864dd935f44SJosh Durgin */ 4865f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 4866dd935f44SJosh Durgin { 486799d16943SIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 4868dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 4869dd935f44SJosh Durgin } 4870dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 4871dd935f44SJosh Durgin 48727cca78c9SIlya Dryomov void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) 48737cca78c9SIlya Dryomov { 48747cca78c9SIlya Dryomov down_read(&osdc->lock); 48757cca78c9SIlya Dryomov maybe_request_map(osdc); 48767cca78c9SIlya Dryomov up_read(&osdc->lock); 48777cca78c9SIlya Dryomov } 48787cca78c9SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_maybe_request_map); 4879dd935f44SJosh Durgin 4880dd935f44SJosh Durgin /* 4881428a7158SDouglas Fuller * Execute an OSD class method on an object. 4882428a7158SDouglas Fuller * 4883428a7158SDouglas Fuller * @flags: CEPH_OSD_FLAG_* 48842544a020SIlya Dryomov * @resp_len: in/out param for reply length 4885428a7158SDouglas Fuller */ 4886428a7158SDouglas Fuller int ceph_osdc_call(struct ceph_osd_client *osdc, 4887428a7158SDouglas Fuller struct ceph_object_id *oid, 4888428a7158SDouglas Fuller struct ceph_object_locator *oloc, 4889428a7158SDouglas Fuller const char *class, const char *method, 4890428a7158SDouglas Fuller unsigned int flags, 4891428a7158SDouglas Fuller struct page *req_page, size_t req_len, 4892428a7158SDouglas Fuller struct page *resp_page, size_t *resp_len) 4893428a7158SDouglas Fuller { 4894428a7158SDouglas Fuller struct ceph_osd_request *req; 4895428a7158SDouglas Fuller int ret; 4896428a7158SDouglas Fuller 48972544a020SIlya Dryomov if (req_len > PAGE_SIZE || (resp_page && *resp_len > PAGE_SIZE)) 48982544a020SIlya Dryomov return -E2BIG; 48992544a020SIlya Dryomov 4900428a7158SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4901428a7158SDouglas Fuller if (!req) 4902428a7158SDouglas Fuller return -ENOMEM; 4903428a7158SDouglas Fuller 4904428a7158SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 4905428a7158SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 4906428a7158SDouglas Fuller req->r_flags = flags; 4907428a7158SDouglas Fuller 4908428a7158SDouglas Fuller ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4909428a7158SDouglas Fuller if (ret) 4910428a7158SDouglas Fuller goto out_put_req; 4911428a7158SDouglas Fuller 4912428a7158SDouglas Fuller osd_req_op_cls_init(req, 0, CEPH_OSD_OP_CALL, class, method); 4913428a7158SDouglas Fuller if (req_page) 4914428a7158SDouglas Fuller osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len, 4915428a7158SDouglas Fuller 0, false, false); 4916428a7158SDouglas Fuller if (resp_page) 4917428a7158SDouglas Fuller osd_req_op_cls_response_data_pages(req, 0, &resp_page, 49182544a020SIlya Dryomov *resp_len, 0, false, false); 4919428a7158SDouglas Fuller 4920428a7158SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 4921428a7158SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 4922428a7158SDouglas Fuller if (ret >= 0) { 4923428a7158SDouglas Fuller ret = req->r_ops[0].rval; 4924428a7158SDouglas Fuller if (resp_page) 4925428a7158SDouglas Fuller *resp_len = req->r_ops[0].outdata_len; 4926428a7158SDouglas Fuller } 4927428a7158SDouglas Fuller 4928428a7158SDouglas Fuller out_put_req: 4929428a7158SDouglas Fuller ceph_osdc_put_request(req); 4930428a7158SDouglas Fuller return ret; 4931428a7158SDouglas Fuller } 4932428a7158SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_call); 4933428a7158SDouglas Fuller 4934428a7158SDouglas Fuller /* 49353d14c5d2SYehuda Sadeh * init, shutdown 49363d14c5d2SYehuda Sadeh */ 49373d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 49383d14c5d2SYehuda Sadeh { 49393d14c5d2SYehuda Sadeh int err; 49403d14c5d2SYehuda Sadeh 49413d14c5d2SYehuda Sadeh dout("init\n"); 49423d14c5d2SYehuda Sadeh osdc->client = client; 49435aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 49443d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 49453d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 49469dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 49475aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 49485aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 49495aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 4950264048afSIlya Dryomov osdc->last_linger_id = CEPH_LINGER_ID_START; 4951922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 49524609245eSIlya Dryomov osdc->map_checks = RB_ROOT; 49534609245eSIlya Dryomov osdc->linger_map_checks = RB_ROOT; 49543d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 49553d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 49563d14c5d2SYehuda Sadeh 49573d14c5d2SYehuda Sadeh err = -ENOMEM; 4958e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 4959e5253a7bSIlya Dryomov if (!osdc->osdmap) 4960e5253a7bSIlya Dryomov goto out; 4961e5253a7bSIlya Dryomov 49629e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 49639e767adbSIlya Dryomov ceph_osd_request_cache); 49643d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 4965e5253a7bSIlya Dryomov goto out_map; 49663d14c5d2SYehuda Sadeh 4967d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 4968711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 49693d14c5d2SYehuda Sadeh if (err < 0) 49703d14c5d2SYehuda Sadeh goto out_mempool; 4971d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 4972711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 49733d14c5d2SYehuda Sadeh if (err < 0) 49743d14c5d2SYehuda Sadeh goto out_msgpool; 4975a40c4f10SYehuda Sadeh 4976dbcae088SDan Carpenter err = -ENOMEM; 4977a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 4978dbcae088SDan Carpenter if (!osdc->notify_wq) 4979c172ec5cSIlya Dryomov goto out_msgpool_reply; 4980c172ec5cSIlya Dryomov 4981fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 4982fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 4983b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 4984b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 4985b37ee1b9SIlya Dryomov 49863d14c5d2SYehuda Sadeh return 0; 49873d14c5d2SYehuda Sadeh 4988c172ec5cSIlya Dryomov out_msgpool_reply: 4989c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 49903d14c5d2SYehuda Sadeh out_msgpool: 49913d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 49923d14c5d2SYehuda Sadeh out_mempool: 49933d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 4994e5253a7bSIlya Dryomov out_map: 4995e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 49963d14c5d2SYehuda Sadeh out: 49973d14c5d2SYehuda Sadeh return err; 49983d14c5d2SYehuda Sadeh } 49993d14c5d2SYehuda Sadeh 50003d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 50013d14c5d2SYehuda Sadeh { 5002a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 5003a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 50043d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 50053d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 500642a2c09fSIlya Dryomov 50075aea3dcdSIlya Dryomov down_write(&osdc->lock); 500842a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 500942a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 501042a2c09fSIlya Dryomov struct ceph_osd, o_node); 50115aea3dcdSIlya Dryomov close_osd(osd); 501242a2c09fSIlya Dryomov } 50135aea3dcdSIlya Dryomov up_write(&osdc->lock); 501402113a0fSElena Reshetova WARN_ON(refcount_read(&osdc->homeless_osd.o_ref) != 1); 50155aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 50165aea3dcdSIlya Dryomov 50175aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 5018922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 50194609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); 50204609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); 50215aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 50225aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 502342a2c09fSIlya Dryomov 50243d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 50253d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 50263d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 50273d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 50283d14c5d2SYehuda Sadeh } 50293d14c5d2SYehuda Sadeh 50303d14c5d2SYehuda Sadeh /* 50313d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 50323d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 50333d14c5d2SYehuda Sadeh */ 50343d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 50353d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 50363d14c5d2SYehuda Sadeh u64 off, u64 *plen, 50373d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 5038b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 50393d14c5d2SYehuda Sadeh { 50403d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 50413d14c5d2SYehuda Sadeh int rc = 0; 50423d14c5d2SYehuda Sadeh 50433d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 50443d14c5d2SYehuda Sadeh vino.snap, off, *plen); 5045715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 50463d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 5047acead002SAlex Elder NULL, truncate_seq, truncate_size, 5048153e5167SAlex Elder false); 50496816282dSSage Weil if (IS_ERR(req)) 50506816282dSSage Weil return PTR_ERR(req); 50513d14c5d2SYehuda Sadeh 50523d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 5053406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 5054a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 50553d14c5d2SYehuda Sadeh 5056e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 505743bfe5deSAlex Elder off, *plen, *plen, page_align); 50583d14c5d2SYehuda Sadeh 50593d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 50603d14c5d2SYehuda Sadeh if (!rc) 50613d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 50623d14c5d2SYehuda Sadeh 50633d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 50643d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 50653d14c5d2SYehuda Sadeh return rc; 50663d14c5d2SYehuda Sadeh } 50673d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 50683d14c5d2SYehuda Sadeh 50693d14c5d2SYehuda Sadeh /* 50703d14c5d2SYehuda Sadeh * do a synchronous write on N pages 50713d14c5d2SYehuda Sadeh */ 50723d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 50733d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 50743d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 50753d14c5d2SYehuda Sadeh u64 off, u64 len, 50763d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 50773d14c5d2SYehuda Sadeh struct timespec *mtime, 507824808826SAlex Elder struct page **pages, int num_pages) 50793d14c5d2SYehuda Sadeh { 50803d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 50813d14c5d2SYehuda Sadeh int rc = 0; 5082b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 50833d14c5d2SYehuda Sadeh 5084715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 508554ea0046SIlya Dryomov CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE, 5086acead002SAlex Elder snapc, truncate_seq, truncate_size, 5087153e5167SAlex Elder true); 50886816282dSSage Weil if (IS_ERR(req)) 50896816282dSSage Weil return PTR_ERR(req); 50903d14c5d2SYehuda Sadeh 50913d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 5092406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 509343bfe5deSAlex Elder false, false); 509443bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 50953d14c5d2SYehuda Sadeh 5096bb873b53SIlya Dryomov req->r_mtime = *mtime; 509787f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 50983d14c5d2SYehuda Sadeh if (!rc) 50993d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 51003d14c5d2SYehuda Sadeh 51013d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 51023d14c5d2SYehuda Sadeh if (rc == 0) 51033d14c5d2SYehuda Sadeh rc = len; 51043d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 51053d14c5d2SYehuda Sadeh return rc; 51063d14c5d2SYehuda Sadeh } 51073d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 51083d14c5d2SYehuda Sadeh 510957a35dfbSChengguang Xu int __init ceph_osdc_setup(void) 51105522ae0bSAlex Elder { 51113f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 51123f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 51133f1af42aSIlya Dryomov 51145522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 51153f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 51163f1af42aSIlya Dryomov 0, 0, NULL); 51175522ae0bSAlex Elder 51185522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 51195522ae0bSAlex Elder } 51205522ae0bSAlex Elder 51215522ae0bSAlex Elder void ceph_osdc_cleanup(void) 51225522ae0bSAlex Elder { 51235522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 51245522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 51255522ae0bSAlex Elder ceph_osd_request_cache = NULL; 51265522ae0bSAlex Elder } 51275522ae0bSAlex Elder 51283d14c5d2SYehuda Sadeh /* 51293d14c5d2SYehuda Sadeh * handle incoming message 51303d14c5d2SYehuda Sadeh */ 51313d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 51323d14c5d2SYehuda Sadeh { 51333d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 51345aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 51353d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 51363d14c5d2SYehuda Sadeh 51373d14c5d2SYehuda Sadeh switch (type) { 51383d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 51393d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 51403d14c5d2SYehuda Sadeh break; 51413d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 51425aea3dcdSIlya Dryomov handle_reply(osd, msg); 51433d14c5d2SYehuda Sadeh break; 5144a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5145a02a946dSIlya Dryomov handle_backoff(osd, msg); 5146a02a946dSIlya Dryomov break; 5147a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 5148a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 5149a40c4f10SYehuda Sadeh break; 51503d14c5d2SYehuda Sadeh 51513d14c5d2SYehuda Sadeh default: 51523d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 51533d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 51543d14c5d2SYehuda Sadeh } 51555aea3dcdSIlya Dryomov 51563d14c5d2SYehuda Sadeh ceph_msg_put(msg); 51573d14c5d2SYehuda Sadeh } 51583d14c5d2SYehuda Sadeh 51593d14c5d2SYehuda Sadeh /* 5160d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 5161d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 5162d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 51633d14c5d2SYehuda Sadeh */ 51643d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 51653d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 51663d14c5d2SYehuda Sadeh int *skip) 51673d14c5d2SYehuda Sadeh { 51683d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 51693d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 51705aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 51713d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 51723f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 51733d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 51745aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 51753d14c5d2SYehuda Sadeh 51765aea3dcdSIlya Dryomov down_read(&osdc->lock); 51775aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 51785aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 51795aea3dcdSIlya Dryomov *skip = 1; 51805aea3dcdSIlya Dryomov goto out_unlock_osdc; 51815aea3dcdSIlya Dryomov } 51825aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 51835aea3dcdSIlya Dryomov 51845aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 51855aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 51863d14c5d2SYehuda Sadeh if (!req) { 5187cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 5188cd8140c6SIlya Dryomov osd->o_osd, tid); 5189d15f9d69SIlya Dryomov *skip = 1; 51905aea3dcdSIlya Dryomov goto out_unlock_session; 51913d14c5d2SYehuda Sadeh } 51923d14c5d2SYehuda Sadeh 51938921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 51943d14c5d2SYehuda Sadeh 5195f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 5196d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 5197d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 5198d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 51993f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 52003f0a4ac5SIlya Dryomov false); 52013d14c5d2SYehuda Sadeh if (!m) 52025aea3dcdSIlya Dryomov goto out_unlock_session; 52033d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 52043d14c5d2SYehuda Sadeh req->r_reply = m; 52053d14c5d2SYehuda Sadeh } 52063d14c5d2SYehuda Sadeh 5207d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 5208d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 5209d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 5210d15f9d69SIlya Dryomov req->r_reply->data_length); 52113d14c5d2SYehuda Sadeh m = NULL; 5212d15f9d69SIlya Dryomov *skip = 1; 52135aea3dcdSIlya Dryomov goto out_unlock_session; 52143d14c5d2SYehuda Sadeh } 5215d15f9d69SIlya Dryomov 5216d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 52173d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 52183d14c5d2SYehuda Sadeh 52195aea3dcdSIlya Dryomov out_unlock_session: 52205aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 52215aea3dcdSIlya Dryomov out_unlock_osdc: 52225aea3dcdSIlya Dryomov up_read(&osdc->lock); 52233d14c5d2SYehuda Sadeh return m; 52243d14c5d2SYehuda Sadeh } 52253d14c5d2SYehuda Sadeh 522619079203SIlya Dryomov /* 522719079203SIlya Dryomov * TODO: switch to a msg-owned pagelist 522819079203SIlya Dryomov */ 522919079203SIlya Dryomov static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) 523019079203SIlya Dryomov { 523119079203SIlya Dryomov struct ceph_msg *m; 523219079203SIlya Dryomov int type = le16_to_cpu(hdr->type); 523319079203SIlya Dryomov u32 front_len = le32_to_cpu(hdr->front_len); 523419079203SIlya Dryomov u32 data_len = le32_to_cpu(hdr->data_len); 523519079203SIlya Dryomov 523619079203SIlya Dryomov m = ceph_msg_new(type, front_len, GFP_NOIO, false); 523719079203SIlya Dryomov if (!m) 523819079203SIlya Dryomov return NULL; 523919079203SIlya Dryomov 524019079203SIlya Dryomov if (data_len) { 524119079203SIlya Dryomov struct page **pages; 524219079203SIlya Dryomov struct ceph_osd_data osd_data; 524319079203SIlya Dryomov 524419079203SIlya Dryomov pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), 524519079203SIlya Dryomov GFP_NOIO); 5246c22e853aSWei Yongjun if (IS_ERR(pages)) { 524719079203SIlya Dryomov ceph_msg_put(m); 524819079203SIlya Dryomov return NULL; 524919079203SIlya Dryomov } 525019079203SIlya Dryomov 525119079203SIlya Dryomov ceph_osd_data_pages_init(&osd_data, pages, data_len, 0, false, 525219079203SIlya Dryomov false); 525319079203SIlya Dryomov ceph_osdc_msg_data_add(m, &osd_data); 525419079203SIlya Dryomov } 525519079203SIlya Dryomov 525619079203SIlya Dryomov return m; 525719079203SIlya Dryomov } 525819079203SIlya Dryomov 52593d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 52603d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 52613d14c5d2SYehuda Sadeh int *skip) 52623d14c5d2SYehuda Sadeh { 52633d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 52643d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 52653d14c5d2SYehuda Sadeh 52661c20f2d2SAlex Elder *skip = 0; 52673d14c5d2SYehuda Sadeh switch (type) { 52683d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 5269a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5270a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 527119079203SIlya Dryomov return alloc_msg_with_page_vector(hdr); 52723d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 52733d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 52743d14c5d2SYehuda Sadeh default: 52755aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 52765aea3dcdSIlya Dryomov osd->o_osd, type); 52773d14c5d2SYehuda Sadeh *skip = 1; 52783d14c5d2SYehuda Sadeh return NULL; 52793d14c5d2SYehuda Sadeh } 52803d14c5d2SYehuda Sadeh } 52813d14c5d2SYehuda Sadeh 52823d14c5d2SYehuda Sadeh /* 52833d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 52843d14c5d2SYehuda Sadeh */ 52853d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 52863d14c5d2SYehuda Sadeh { 52873d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 52883d14c5d2SYehuda Sadeh if (get_osd(osd)) 52893d14c5d2SYehuda Sadeh return con; 52903d14c5d2SYehuda Sadeh return NULL; 52913d14c5d2SYehuda Sadeh } 52923d14c5d2SYehuda Sadeh 52933d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 52943d14c5d2SYehuda Sadeh { 52953d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 52963d14c5d2SYehuda Sadeh put_osd(osd); 52973d14c5d2SYehuda Sadeh } 52983d14c5d2SYehuda Sadeh 52993d14c5d2SYehuda Sadeh /* 53003d14c5d2SYehuda Sadeh * authentication 53013d14c5d2SYehuda Sadeh */ 5302a3530df3SAlex Elder /* 5303a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 5304a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 5305a3530df3SAlex Elder */ 5306a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 53078f43fb53SAlex Elder int *proto, int force_new) 53083d14c5d2SYehuda Sadeh { 53093d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 53103d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 53113d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 531274f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 53133d14c5d2SYehuda Sadeh 531474f1869fSAlex Elder if (force_new && auth->authorizer) { 53156c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 531674f1869fSAlex Elder auth->authorizer = NULL; 53173d14c5d2SYehuda Sadeh } 531827859f97SSage Weil if (!auth->authorizer) { 531927859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 5320a3530df3SAlex Elder auth); 53213d14c5d2SYehuda Sadeh if (ret) 5322a3530df3SAlex Elder return ERR_PTR(ret); 532327859f97SSage Weil } else { 532427859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 53250bed9b5cSSage Weil auth); 53260bed9b5cSSage Weil if (ret) 53270bed9b5cSSage Weil return ERR_PTR(ret); 53283d14c5d2SYehuda Sadeh } 53293d14c5d2SYehuda Sadeh *proto = ac->protocol; 533074f1869fSAlex Elder 5331a3530df3SAlex Elder return auth; 53323d14c5d2SYehuda Sadeh } 53333d14c5d2SYehuda Sadeh 53343d14c5d2SYehuda Sadeh 53350dde5848SIlya Dryomov static int verify_authorizer_reply(struct ceph_connection *con) 53363d14c5d2SYehuda Sadeh { 53373d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 53383d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 53393d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 53403d14c5d2SYehuda Sadeh 53410dde5848SIlya Dryomov return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer); 53423d14c5d2SYehuda Sadeh } 53433d14c5d2SYehuda Sadeh 53443d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 53453d14c5d2SYehuda Sadeh { 53463d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 53473d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 53483d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 53493d14c5d2SYehuda Sadeh 535027859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 53513d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 53523d14c5d2SYehuda Sadeh } 53533d14c5d2SYehuda Sadeh 53548cb441c0SIlya Dryomov static void osd_reencode_message(struct ceph_msg *msg) 53558cb441c0SIlya Dryomov { 5356914902afSIlya Dryomov int type = le16_to_cpu(msg->hdr.type); 5357914902afSIlya Dryomov 5358914902afSIlya Dryomov if (type == CEPH_MSG_OSD_OP) 53598cb441c0SIlya Dryomov encode_request_finish(msg); 53608cb441c0SIlya Dryomov } 53618cb441c0SIlya Dryomov 536279dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 536333d07337SYan, Zheng { 536479dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 536533d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 536679dbd1baSIlya Dryomov 536733d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 536833d07337SYan, Zheng } 536933d07337SYan, Zheng 537079dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 537133d07337SYan, Zheng { 537279dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 537333d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 537479dbd1baSIlya Dryomov 537533d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 537633d07337SYan, Zheng } 537733d07337SYan, Zheng 53783d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 53793d14c5d2SYehuda Sadeh .get = get_osd_con, 53803d14c5d2SYehuda Sadeh .put = put_osd_con, 53813d14c5d2SYehuda Sadeh .dispatch = dispatch, 53823d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 53833d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 53843d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 53853d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 53868cb441c0SIlya Dryomov .reencode_message = osd_reencode_message, 538779dbd1baSIlya Dryomov .sign_message = osd_sign_message, 538879dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 53895aea3dcdSIlya Dryomov .fault = osd_fault, 53903d14c5d2SYehuda Sadeh }; 5391