1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 2a4ce40a9SAlex Elder 33d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 43d14c5d2SYehuda Sadeh 53d14c5d2SYehuda Sadeh #include <linux/module.h> 63d14c5d2SYehuda Sadeh #include <linux/err.h> 73d14c5d2SYehuda Sadeh #include <linux/highmem.h> 83d14c5d2SYehuda Sadeh #include <linux/mm.h> 93d14c5d2SYehuda Sadeh #include <linux/pagemap.h> 103d14c5d2SYehuda Sadeh #include <linux/slab.h> 113d14c5d2SYehuda Sadeh #include <linux/uaccess.h> 123d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 133d14c5d2SYehuda Sadeh #include <linux/bio.h> 143d14c5d2SYehuda Sadeh #endif 153d14c5d2SYehuda Sadeh 168cb441c0SIlya Dryomov #include <linux/ceph/ceph_features.h> 173d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 183d14c5d2SYehuda Sadeh #include <linux/ceph/osd_client.h> 193d14c5d2SYehuda Sadeh #include <linux/ceph/messenger.h> 203d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 213d14c5d2SYehuda Sadeh #include <linux/ceph/auth.h> 223d14c5d2SYehuda Sadeh #include <linux/ceph/pagelist.h> 2308c1ac50SIlya Dryomov #include <linux/ceph/striper.h> 243d14c5d2SYehuda Sadeh 253d14c5d2SYehuda Sadeh #define OSD_OPREPLY_FRONT_LEN 512 263d14c5d2SYehuda Sadeh 275522ae0bSAlex Elder static struct kmem_cache *ceph_osd_request_cache; 285522ae0bSAlex Elder 293d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops; 303d14c5d2SYehuda Sadeh 313d14c5d2SYehuda Sadeh /* 323d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 333d14c5d2SYehuda Sadeh * 343d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 353d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 363d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 373d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 383d14c5d2SYehuda Sadeh * access to storage. 393d14c5d2SYehuda Sadeh * 403d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 413d14c5d2SYehuda Sadeh * are described by the osd map. 423d14c5d2SYehuda Sadeh * 433d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 443d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 453d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 463d14c5d2SYehuda Sadeh * channel with an OSD is reset. 473d14c5d2SYehuda Sadeh */ 483d14c5d2SYehuda Sadeh 495aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req); 505aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req); 51922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 52922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq); 53922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 54922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq); 55a02a946dSIlya Dryomov static void clear_backoffs(struct ceph_osd *osd); 565aea3dcdSIlya Dryomov 575aea3dcdSIlya Dryomov #if 1 585aea3dcdSIlya Dryomov static inline bool rwsem_is_wrlocked(struct rw_semaphore *sem) 595aea3dcdSIlya Dryomov { 605aea3dcdSIlya Dryomov bool wrlocked = true; 615aea3dcdSIlya Dryomov 625aea3dcdSIlya Dryomov if (unlikely(down_read_trylock(sem))) { 635aea3dcdSIlya Dryomov wrlocked = false; 645aea3dcdSIlya Dryomov up_read(sem); 655aea3dcdSIlya Dryomov } 665aea3dcdSIlya Dryomov 675aea3dcdSIlya Dryomov return wrlocked; 685aea3dcdSIlya Dryomov } 695aea3dcdSIlya Dryomov static inline void verify_osdc_locked(struct ceph_osd_client *osdc) 705aea3dcdSIlya Dryomov { 715aea3dcdSIlya Dryomov WARN_ON(!rwsem_is_locked(&osdc->lock)); 725aea3dcdSIlya Dryomov } 735aea3dcdSIlya Dryomov static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) 745aea3dcdSIlya Dryomov { 755aea3dcdSIlya Dryomov WARN_ON(!rwsem_is_wrlocked(&osdc->lock)); 765aea3dcdSIlya Dryomov } 775aea3dcdSIlya Dryomov static inline void verify_osd_locked(struct ceph_osd *osd) 785aea3dcdSIlya Dryomov { 795aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 805aea3dcdSIlya Dryomov 815aea3dcdSIlya Dryomov WARN_ON(!(mutex_is_locked(&osd->lock) && 825aea3dcdSIlya Dryomov rwsem_is_locked(&osdc->lock)) && 835aea3dcdSIlya Dryomov !rwsem_is_wrlocked(&osdc->lock)); 845aea3dcdSIlya Dryomov } 85922dab61SIlya Dryomov static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) 86922dab61SIlya Dryomov { 87922dab61SIlya Dryomov WARN_ON(!mutex_is_locked(&lreq->lock)); 88922dab61SIlya Dryomov } 895aea3dcdSIlya Dryomov #else 905aea3dcdSIlya Dryomov static inline void verify_osdc_locked(struct ceph_osd_client *osdc) { } 915aea3dcdSIlya Dryomov static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) { } 925aea3dcdSIlya Dryomov static inline void verify_osd_locked(struct ceph_osd *osd) { } 93922dab61SIlya Dryomov static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) { } 945aea3dcdSIlya Dryomov #endif 955aea3dcdSIlya Dryomov 963d14c5d2SYehuda Sadeh /* 973d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 983d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 993d14c5d2SYehuda Sadeh * object boundary. 1003d14c5d2SYehuda Sadeh * 1013d14c5d2SYehuda Sadeh * fill osd op in request message. 1023d14c5d2SYehuda Sadeh */ 103dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 104a19dadfbSAlex Elder u64 *objnum, u64 *objoff, u64 *objlen) 1053d14c5d2SYehuda Sadeh { 10660e56f13SAlex Elder u64 orig_len = *plen; 107dccbf080SIlya Dryomov u32 xlen; 1083d14c5d2SYehuda Sadeh 10960e56f13SAlex Elder /* object extent? */ 110dccbf080SIlya Dryomov ceph_calc_file_object_mapping(layout, off, orig_len, objnum, 111dccbf080SIlya Dryomov objoff, &xlen); 112dccbf080SIlya Dryomov *objlen = xlen; 11375d1c941SAlex Elder if (*objlen < orig_len) { 11475d1c941SAlex Elder *plen = *objlen; 11560e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 11660e56f13SAlex Elder orig_len - *plen, off, *plen); 11760e56f13SAlex Elder } 11860e56f13SAlex Elder 11975d1c941SAlex Elder dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); 1203ff5f385SAlex Elder return 0; 1213d14c5d2SYehuda Sadeh } 1223d14c5d2SYehuda Sadeh 123c54d47bfSAlex Elder static void ceph_osd_data_init(struct ceph_osd_data *osd_data) 124c54d47bfSAlex Elder { 125c54d47bfSAlex Elder memset(osd_data, 0, sizeof (*osd_data)); 126c54d47bfSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_NONE; 127c54d47bfSAlex Elder } 128c54d47bfSAlex Elder 12989486833SIlya Dryomov /* 13089486833SIlya Dryomov * Consumes @pages if @own_pages is true. 13189486833SIlya Dryomov */ 132a4ce40a9SAlex Elder static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, 13343bfe5deSAlex Elder struct page **pages, u64 length, u32 alignment, 13443bfe5deSAlex Elder bool pages_from_pool, bool own_pages) 13543bfe5deSAlex Elder { 13643bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 13743bfe5deSAlex Elder osd_data->pages = pages; 13843bfe5deSAlex Elder osd_data->length = length; 13943bfe5deSAlex Elder osd_data->alignment = alignment; 14043bfe5deSAlex Elder osd_data->pages_from_pool = pages_from_pool; 14143bfe5deSAlex Elder osd_data->own_pages = own_pages; 14243bfe5deSAlex Elder } 14343bfe5deSAlex Elder 14489486833SIlya Dryomov /* 14589486833SIlya Dryomov * Consumes a ref on @pagelist. 14689486833SIlya Dryomov */ 147a4ce40a9SAlex Elder static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, 14843bfe5deSAlex Elder struct ceph_pagelist *pagelist) 14943bfe5deSAlex Elder { 15043bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; 15143bfe5deSAlex Elder osd_data->pagelist = pagelist; 15243bfe5deSAlex Elder } 15343bfe5deSAlex Elder 15443bfe5deSAlex Elder #ifdef CONFIG_BLOCK 155a4ce40a9SAlex Elder static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 1565359a17dSIlya Dryomov struct ceph_bio_iter *bio_pos, 1575359a17dSIlya Dryomov u32 bio_length) 15843bfe5deSAlex Elder { 15943bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_BIO; 1605359a17dSIlya Dryomov osd_data->bio_pos = *bio_pos; 16143bfe5deSAlex Elder osd_data->bio_length = bio_length; 16243bfe5deSAlex Elder } 16343bfe5deSAlex Elder #endif /* CONFIG_BLOCK */ 16443bfe5deSAlex Elder 165b9e281c2SIlya Dryomov static void ceph_osd_data_bvecs_init(struct ceph_osd_data *osd_data, 1660010f705SIlya Dryomov struct ceph_bvec_iter *bvec_pos, 1670010f705SIlya Dryomov u32 num_bvecs) 168b9e281c2SIlya Dryomov { 169b9e281c2SIlya Dryomov osd_data->type = CEPH_OSD_DATA_TYPE_BVECS; 170b9e281c2SIlya Dryomov osd_data->bvec_pos = *bvec_pos; 1710010f705SIlya Dryomov osd_data->num_bvecs = num_bvecs; 172b9e281c2SIlya Dryomov } 173b9e281c2SIlya Dryomov 174863c7eb5SAlex Elder #define osd_req_op_data(oreq, whch, typ, fld) \ 175863c7eb5SAlex Elder ({ \ 1768a703a38SIoana Ciornei struct ceph_osd_request *__oreq = (oreq); \ 1778a703a38SIoana Ciornei unsigned int __whch = (whch); \ 1788a703a38SIoana Ciornei BUG_ON(__whch >= __oreq->r_num_ops); \ 1798a703a38SIoana Ciornei &__oreq->r_ops[__whch].typ.fld; \ 180863c7eb5SAlex Elder }) 181863c7eb5SAlex Elder 18249719778SAlex Elder static struct ceph_osd_data * 18349719778SAlex Elder osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) 18449719778SAlex Elder { 18549719778SAlex Elder BUG_ON(which >= osd_req->r_num_ops); 18649719778SAlex Elder 18749719778SAlex Elder return &osd_req->r_ops[which].raw_data_in; 18849719778SAlex Elder } 18949719778SAlex Elder 190a4ce40a9SAlex Elder struct ceph_osd_data * 191a4ce40a9SAlex Elder osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, 192406e2c9fSAlex Elder unsigned int which) 193a4ce40a9SAlex Elder { 194863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, extent, osd_data); 195a4ce40a9SAlex Elder } 196a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data); 197a4ce40a9SAlex Elder 19849719778SAlex Elder void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 19949719778SAlex Elder unsigned int which, struct page **pages, 20049719778SAlex Elder u64 length, u32 alignment, 20149719778SAlex Elder bool pages_from_pool, bool own_pages) 20249719778SAlex Elder { 20349719778SAlex Elder struct ceph_osd_data *osd_data; 20449719778SAlex Elder 20549719778SAlex Elder osd_data = osd_req_op_raw_data_in(osd_req, which); 20649719778SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 20749719778SAlex Elder pages_from_pool, own_pages); 20849719778SAlex Elder } 20949719778SAlex Elder EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 21049719778SAlex Elder 211a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 212406e2c9fSAlex Elder unsigned int which, struct page **pages, 213406e2c9fSAlex Elder u64 length, u32 alignment, 214a4ce40a9SAlex Elder bool pages_from_pool, bool own_pages) 215a4ce40a9SAlex Elder { 216a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 217a4ce40a9SAlex Elder 218863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 219a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 220a4ce40a9SAlex Elder pages_from_pool, own_pages); 221a4ce40a9SAlex Elder } 222a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 223a4ce40a9SAlex Elder 224a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 225406e2c9fSAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 226a4ce40a9SAlex Elder { 227a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 228a4ce40a9SAlex Elder 229863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 230a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 231a4ce40a9SAlex Elder } 232a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 233a4ce40a9SAlex Elder 234a4ce40a9SAlex Elder #ifdef CONFIG_BLOCK 235a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 2365359a17dSIlya Dryomov unsigned int which, 2375359a17dSIlya Dryomov struct ceph_bio_iter *bio_pos, 2385359a17dSIlya Dryomov u32 bio_length) 239a4ce40a9SAlex Elder { 240a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 241863c7eb5SAlex Elder 242863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2435359a17dSIlya Dryomov ceph_osd_data_bio_init(osd_data, bio_pos, bio_length); 244a4ce40a9SAlex Elder } 245a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 246a4ce40a9SAlex Elder #endif /* CONFIG_BLOCK */ 247a4ce40a9SAlex Elder 2480010f705SIlya Dryomov void osd_req_op_extent_osd_data_bvecs(struct ceph_osd_request *osd_req, 2490010f705SIlya Dryomov unsigned int which, 2500010f705SIlya Dryomov struct bio_vec *bvecs, u32 num_bvecs, 2510010f705SIlya Dryomov u32 bytes) 2520010f705SIlya Dryomov { 2530010f705SIlya Dryomov struct ceph_osd_data *osd_data; 2540010f705SIlya Dryomov struct ceph_bvec_iter it = { 2550010f705SIlya Dryomov .bvecs = bvecs, 2560010f705SIlya Dryomov .iter = { .bi_size = bytes }, 2570010f705SIlya Dryomov }; 2580010f705SIlya Dryomov 2590010f705SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2600010f705SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, &it, num_bvecs); 2610010f705SIlya Dryomov } 2620010f705SIlya Dryomov EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvecs); 2630010f705SIlya Dryomov 264b9e281c2SIlya Dryomov void osd_req_op_extent_osd_data_bvec_pos(struct ceph_osd_request *osd_req, 265b9e281c2SIlya Dryomov unsigned int which, 266b9e281c2SIlya Dryomov struct ceph_bvec_iter *bvec_pos) 267b9e281c2SIlya Dryomov { 268b9e281c2SIlya Dryomov struct ceph_osd_data *osd_data; 269b9e281c2SIlya Dryomov 270b9e281c2SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2710010f705SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, bvec_pos, 0); 272b9e281c2SIlya Dryomov } 273b9e281c2SIlya Dryomov EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvec_pos); 274b9e281c2SIlya Dryomov 275a4ce40a9SAlex Elder static void osd_req_op_cls_request_info_pagelist( 276a4ce40a9SAlex Elder struct ceph_osd_request *osd_req, 277a4ce40a9SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 278a4ce40a9SAlex Elder { 279a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 280a4ce40a9SAlex Elder 281863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_info); 282a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 283a4ce40a9SAlex Elder } 284a4ce40a9SAlex Elder 28504017e29SAlex Elder void osd_req_op_cls_request_data_pagelist( 28604017e29SAlex Elder struct ceph_osd_request *osd_req, 28704017e29SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 28804017e29SAlex Elder { 28904017e29SAlex Elder struct ceph_osd_data *osd_data; 29004017e29SAlex Elder 291863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 29204017e29SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 293bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += pagelist->length; 294bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += pagelist->length; 29504017e29SAlex Elder } 29604017e29SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 29704017e29SAlex Elder 2986c57b554SAlex Elder void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 2996c57b554SAlex Elder unsigned int which, struct page **pages, u64 length, 3006c57b554SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 3016c57b554SAlex Elder { 3026c57b554SAlex Elder struct ceph_osd_data *osd_data; 3036c57b554SAlex Elder 3046c57b554SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 3056c57b554SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 3066c57b554SAlex Elder pages_from_pool, own_pages); 307bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += length; 308bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += length; 3096c57b554SAlex Elder } 3106c57b554SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 3116c57b554SAlex Elder 312b9e281c2SIlya Dryomov void osd_req_op_cls_request_data_bvecs(struct ceph_osd_request *osd_req, 313b9e281c2SIlya Dryomov unsigned int which, 3140010f705SIlya Dryomov struct bio_vec *bvecs, u32 num_bvecs, 3150010f705SIlya Dryomov u32 bytes) 316b9e281c2SIlya Dryomov { 317b9e281c2SIlya Dryomov struct ceph_osd_data *osd_data; 318b9e281c2SIlya Dryomov struct ceph_bvec_iter it = { 319b9e281c2SIlya Dryomov .bvecs = bvecs, 320b9e281c2SIlya Dryomov .iter = { .bi_size = bytes }, 321b9e281c2SIlya Dryomov }; 322b9e281c2SIlya Dryomov 323b9e281c2SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, cls, request_data); 3240010f705SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, &it, num_bvecs); 325b9e281c2SIlya Dryomov osd_req->r_ops[which].cls.indata_len += bytes; 326b9e281c2SIlya Dryomov osd_req->r_ops[which].indata_len += bytes; 327b9e281c2SIlya Dryomov } 328b9e281c2SIlya Dryomov EXPORT_SYMBOL(osd_req_op_cls_request_data_bvecs); 329b9e281c2SIlya Dryomov 330a4ce40a9SAlex Elder void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 331a4ce40a9SAlex Elder unsigned int which, struct page **pages, u64 length, 332a4ce40a9SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 333a4ce40a9SAlex Elder { 334a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 335a4ce40a9SAlex Elder 336863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, response_data); 337a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 338a4ce40a9SAlex Elder pages_from_pool, own_pages); 339a4ce40a9SAlex Elder } 340a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 341a4ce40a9SAlex Elder 34223c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 34323c08a9cSAlex Elder { 34423c08a9cSAlex Elder switch (osd_data->type) { 34523c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 34623c08a9cSAlex Elder return 0; 34723c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 34823c08a9cSAlex Elder return osd_data->length; 34923c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 35023c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 35123c08a9cSAlex Elder #ifdef CONFIG_BLOCK 35223c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 35323c08a9cSAlex Elder return (u64)osd_data->bio_length; 35423c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 355b9e281c2SIlya Dryomov case CEPH_OSD_DATA_TYPE_BVECS: 356b9e281c2SIlya Dryomov return osd_data->bvec_pos.iter.bi_size; 35723c08a9cSAlex Elder default: 35823c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 35923c08a9cSAlex Elder return 0; 36023c08a9cSAlex Elder } 36123c08a9cSAlex Elder } 36223c08a9cSAlex Elder 363c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 364c54d47bfSAlex Elder { 3655476492fSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 366c54d47bfSAlex Elder int num_pages; 367c54d47bfSAlex Elder 368c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 369c54d47bfSAlex Elder (u64)osd_data->length); 370c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 37189486833SIlya Dryomov } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 37289486833SIlya Dryomov ceph_pagelist_release(osd_data->pagelist); 373c54d47bfSAlex Elder } 3745476492fSAlex Elder ceph_osd_data_init(osd_data); 3755476492fSAlex Elder } 3765476492fSAlex Elder 3775476492fSAlex Elder static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 3785476492fSAlex Elder unsigned int which) 3795476492fSAlex Elder { 3805476492fSAlex Elder struct ceph_osd_req_op *op; 3815476492fSAlex Elder 3825476492fSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 3835476492fSAlex Elder op = &osd_req->r_ops[which]; 3845476492fSAlex Elder 3855476492fSAlex Elder switch (op->op) { 3865476492fSAlex Elder case CEPH_OSD_OP_READ: 3875476492fSAlex Elder case CEPH_OSD_OP_WRITE: 388e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 3895476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 3905476492fSAlex Elder break; 3915476492fSAlex Elder case CEPH_OSD_OP_CALL: 3925476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 39304017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 3945476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 3955476492fSAlex Elder break; 396d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 397d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 398d74b50beSYan, Zheng ceph_osd_data_release(&op->xattr.osd_data); 399d74b50beSYan, Zheng break; 40066ba609fSYan, Zheng case CEPH_OSD_OP_STAT: 40166ba609fSYan, Zheng ceph_osd_data_release(&op->raw_data_in); 40266ba609fSYan, Zheng break; 403922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 404922dab61SIlya Dryomov ceph_osd_data_release(&op->notify_ack.request_data); 405922dab61SIlya Dryomov break; 40619079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 40719079203SIlya Dryomov ceph_osd_data_release(&op->notify.request_data); 40819079203SIlya Dryomov ceph_osd_data_release(&op->notify.response_data); 40919079203SIlya Dryomov break; 410a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 411a4ed38d7SDouglas Fuller ceph_osd_data_release(&op->list_watchers.response_data); 412a4ed38d7SDouglas Fuller break; 4135476492fSAlex Elder default: 4145476492fSAlex Elder break; 4155476492fSAlex Elder } 416c54d47bfSAlex Elder } 417c54d47bfSAlex Elder 4183d14c5d2SYehuda Sadeh /* 41963244fa1SIlya Dryomov * Assumes @t is zero-initialized. 42063244fa1SIlya Dryomov */ 42163244fa1SIlya Dryomov static void target_init(struct ceph_osd_request_target *t) 42263244fa1SIlya Dryomov { 42363244fa1SIlya Dryomov ceph_oid_init(&t->base_oid); 42463244fa1SIlya Dryomov ceph_oloc_init(&t->base_oloc); 42563244fa1SIlya Dryomov ceph_oid_init(&t->target_oid); 42663244fa1SIlya Dryomov ceph_oloc_init(&t->target_oloc); 42763244fa1SIlya Dryomov 42863244fa1SIlya Dryomov ceph_osds_init(&t->acting); 42963244fa1SIlya Dryomov ceph_osds_init(&t->up); 43063244fa1SIlya Dryomov t->size = -1; 43163244fa1SIlya Dryomov t->min_size = -1; 43263244fa1SIlya Dryomov 43363244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 43463244fa1SIlya Dryomov } 43563244fa1SIlya Dryomov 436922dab61SIlya Dryomov static void target_copy(struct ceph_osd_request_target *dest, 437922dab61SIlya Dryomov const struct ceph_osd_request_target *src) 438922dab61SIlya Dryomov { 439922dab61SIlya Dryomov ceph_oid_copy(&dest->base_oid, &src->base_oid); 440922dab61SIlya Dryomov ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); 441922dab61SIlya Dryomov ceph_oid_copy(&dest->target_oid, &src->target_oid); 442922dab61SIlya Dryomov ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); 443922dab61SIlya Dryomov 444922dab61SIlya Dryomov dest->pgid = src->pgid; /* struct */ 445dc98ff72SIlya Dryomov dest->spgid = src->spgid; /* struct */ 446922dab61SIlya Dryomov dest->pg_num = src->pg_num; 447922dab61SIlya Dryomov dest->pg_num_mask = src->pg_num_mask; 448922dab61SIlya Dryomov ceph_osds_copy(&dest->acting, &src->acting); 449922dab61SIlya Dryomov ceph_osds_copy(&dest->up, &src->up); 450922dab61SIlya Dryomov dest->size = src->size; 451922dab61SIlya Dryomov dest->min_size = src->min_size; 452922dab61SIlya Dryomov dest->sort_bitwise = src->sort_bitwise; 453922dab61SIlya Dryomov 454922dab61SIlya Dryomov dest->flags = src->flags; 455922dab61SIlya Dryomov dest->paused = src->paused; 456922dab61SIlya Dryomov 45704c7d789SIlya Dryomov dest->epoch = src->epoch; 458dc93e0e2SIlya Dryomov dest->last_force_resend = src->last_force_resend; 459dc93e0e2SIlya Dryomov 460922dab61SIlya Dryomov dest->osd = src->osd; 461922dab61SIlya Dryomov } 462922dab61SIlya Dryomov 46363244fa1SIlya Dryomov static void target_destroy(struct ceph_osd_request_target *t) 46463244fa1SIlya Dryomov { 46563244fa1SIlya Dryomov ceph_oid_destroy(&t->base_oid); 46630c156d9SYan, Zheng ceph_oloc_destroy(&t->base_oloc); 46763244fa1SIlya Dryomov ceph_oid_destroy(&t->target_oid); 46830c156d9SYan, Zheng ceph_oloc_destroy(&t->target_oloc); 46963244fa1SIlya Dryomov } 47063244fa1SIlya Dryomov 47163244fa1SIlya Dryomov /* 4723d14c5d2SYehuda Sadeh * requests 4733d14c5d2SYehuda Sadeh */ 4743540bfdbSIlya Dryomov static void request_release_checks(struct ceph_osd_request *req) 4753540bfdbSIlya Dryomov { 4763540bfdbSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 4774609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node)); 4783540bfdbSIlya Dryomov WARN_ON(!list_empty(&req->r_unsafe_item)); 4793540bfdbSIlya Dryomov WARN_ON(req->r_osd); 4803540bfdbSIlya Dryomov } 4813540bfdbSIlya Dryomov 4829e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 4833d14c5d2SYehuda Sadeh { 4849e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 4859e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 4865476492fSAlex Elder unsigned int which; 4873d14c5d2SYehuda Sadeh 4889e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 4899e94af20SIlya Dryomov req->r_request, req->r_reply); 4903540bfdbSIlya Dryomov request_release_checks(req); 4919e94af20SIlya Dryomov 4923d14c5d2SYehuda Sadeh if (req->r_request) 4933d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 4945aea3dcdSIlya Dryomov if (req->r_reply) 495ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 4960fff87ecSAlex Elder 4975476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 4985476492fSAlex Elder osd_req_op_data_release(req, which); 4990fff87ecSAlex Elder 500a66dd383SIlya Dryomov target_destroy(&req->r_t); 5013d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 502d30291b9SIlya Dryomov 5033d14c5d2SYehuda Sadeh if (req->r_mempool) 5043d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 5053f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 5065522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 5073f1af42aSIlya Dryomov else 5083f1af42aSIlya Dryomov kfree(req); 5093d14c5d2SYehuda Sadeh } 5109e94af20SIlya Dryomov 5119e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 5129e94af20SIlya Dryomov { 5139e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 5142c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 5159e94af20SIlya Dryomov kref_get(&req->r_kref); 5169e94af20SIlya Dryomov } 5179e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 5189e94af20SIlya Dryomov 5199e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 5209e94af20SIlya Dryomov { 5213ed97d63SIlya Dryomov if (req) { 5229e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 5232c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 5249e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 5259e94af20SIlya Dryomov } 5263ed97d63SIlya Dryomov } 5279e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 5283d14c5d2SYehuda Sadeh 5293540bfdbSIlya Dryomov static void request_init(struct ceph_osd_request *req) 5303540bfdbSIlya Dryomov { 5313540bfdbSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 5323540bfdbSIlya Dryomov memset(req, 0, sizeof(*req)); 5333540bfdbSIlya Dryomov 5343540bfdbSIlya Dryomov kref_init(&req->r_kref); 5353540bfdbSIlya Dryomov init_completion(&req->r_completion); 5363540bfdbSIlya Dryomov RB_CLEAR_NODE(&req->r_node); 5374609245eSIlya Dryomov RB_CLEAR_NODE(&req->r_mc_node); 5383540bfdbSIlya Dryomov INIT_LIST_HEAD(&req->r_unsafe_item); 5393540bfdbSIlya Dryomov 5403540bfdbSIlya Dryomov target_init(&req->r_t); 5413540bfdbSIlya Dryomov } 5423540bfdbSIlya Dryomov 543922dab61SIlya Dryomov /* 544922dab61SIlya Dryomov * This is ugly, but it allows us to reuse linger registration and ping 545922dab61SIlya Dryomov * requests, keeping the structure of the code around send_linger{_ping}() 546922dab61SIlya Dryomov * reasonable. Setting up a min_nr=2 mempool for each linger request 547922dab61SIlya Dryomov * and dealing with copying ops (this blasts req only, watch op remains 548922dab61SIlya Dryomov * intact) isn't any better. 549922dab61SIlya Dryomov */ 550922dab61SIlya Dryomov static void request_reinit(struct ceph_osd_request *req) 551922dab61SIlya Dryomov { 552922dab61SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 553922dab61SIlya Dryomov bool mempool = req->r_mempool; 554922dab61SIlya Dryomov unsigned int num_ops = req->r_num_ops; 555922dab61SIlya Dryomov u64 snapid = req->r_snapid; 556922dab61SIlya Dryomov struct ceph_snap_context *snapc = req->r_snapc; 557922dab61SIlya Dryomov bool linger = req->r_linger; 558922dab61SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 559922dab61SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 560922dab61SIlya Dryomov 561922dab61SIlya Dryomov dout("%s req %p\n", __func__, req); 5622c935bc5SPeter Zijlstra WARN_ON(kref_read(&req->r_kref) != 1); 563922dab61SIlya Dryomov request_release_checks(req); 564922dab61SIlya Dryomov 5652c935bc5SPeter Zijlstra WARN_ON(kref_read(&request_msg->kref) != 1); 5662c935bc5SPeter Zijlstra WARN_ON(kref_read(&reply_msg->kref) != 1); 567922dab61SIlya Dryomov target_destroy(&req->r_t); 568922dab61SIlya Dryomov 569922dab61SIlya Dryomov request_init(req); 570922dab61SIlya Dryomov req->r_osdc = osdc; 571922dab61SIlya Dryomov req->r_mempool = mempool; 572922dab61SIlya Dryomov req->r_num_ops = num_ops; 573922dab61SIlya Dryomov req->r_snapid = snapid; 574922dab61SIlya Dryomov req->r_snapc = snapc; 575922dab61SIlya Dryomov req->r_linger = linger; 576922dab61SIlya Dryomov req->r_request = request_msg; 577922dab61SIlya Dryomov req->r_reply = reply_msg; 578922dab61SIlya Dryomov } 579922dab61SIlya Dryomov 5803d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 5813d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5821b83bef2SSage Weil unsigned int num_ops, 5833d14c5d2SYehuda Sadeh bool use_mempool, 58454a54007SAlex Elder gfp_t gfp_flags) 5853d14c5d2SYehuda Sadeh { 5863d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5873d14c5d2SYehuda Sadeh 5883d14c5d2SYehuda Sadeh if (use_mempool) { 5893f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 5903d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 5913f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 5923f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 5933d14c5d2SYehuda Sadeh } else { 5943f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 595acafe7e3SKees Cook req = kmalloc(struct_size(req, r_ops, num_ops), gfp_flags); 5963d14c5d2SYehuda Sadeh } 5973f1af42aSIlya Dryomov if (unlikely(!req)) 5983d14c5d2SYehuda Sadeh return NULL; 5993d14c5d2SYehuda Sadeh 6003540bfdbSIlya Dryomov request_init(req); 6013d14c5d2SYehuda Sadeh req->r_osdc = osdc; 6023d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 60379528734SAlex Elder req->r_num_ops = num_ops; 60484127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 60584127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 6063d14c5d2SYehuda Sadeh 60713d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 60813d1ad16SIlya Dryomov return req; 6093f1af42aSIlya Dryomov } 61013d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 6113f1af42aSIlya Dryomov 6122e59ffd1SIlya Dryomov static int ceph_oloc_encoding_size(const struct ceph_object_locator *oloc) 61330c156d9SYan, Zheng { 61430c156d9SYan, Zheng return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0); 61530c156d9SYan, Zheng } 61630c156d9SYan, Zheng 6170d9c1ab3SIlya Dryomov static int __ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp, 6180d9c1ab3SIlya Dryomov int num_request_data_items, 6190d9c1ab3SIlya Dryomov int num_reply_data_items) 62013d1ad16SIlya Dryomov { 62113d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 62213d1ad16SIlya Dryomov struct ceph_msg *msg; 62313d1ad16SIlya Dryomov int msg_size; 6243d14c5d2SYehuda Sadeh 6250d9c1ab3SIlya Dryomov WARN_ON(req->r_request || req->r_reply); 626d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 62730c156d9SYan, Zheng WARN_ON(ceph_oloc_empty(&req->r_base_oloc)); 628d30291b9SIlya Dryomov 62913d1ad16SIlya Dryomov /* create request message */ 6308cb441c0SIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 6318cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 6328cb441c0SIlya Dryomov msg_size += 4 + 4 + 4; /* hash, osdmap_epoch, flags */ 6338cb441c0SIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 6348cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid); /* reqid */ 6358cb441c0SIlya Dryomov msg_size += sizeof(struct ceph_blkin_trace_info); /* trace */ 6368cb441c0SIlya Dryomov msg_size += 4 + sizeof(struct ceph_timespec); /* client_inc, mtime */ 63730c156d9SYan, Zheng msg_size += CEPH_ENCODING_START_BLK_LEN + 63830c156d9SYan, Zheng ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */ 63913d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 64013d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 641ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 642ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 64313d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 6448cb441c0SIlya Dryomov msg_size += 4 + 8; /* retry_attempt, features */ 645ae458f5aSIlya Dryomov 64613d1ad16SIlya Dryomov if (req->r_mempool) 6470d9c1ab3SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op, msg_size, 6480d9c1ab3SIlya Dryomov num_request_data_items); 6493d14c5d2SYehuda Sadeh else 6500d9c1ab3SIlya Dryomov msg = ceph_msg_new2(CEPH_MSG_OSD_OP, msg_size, 6510d9c1ab3SIlya Dryomov num_request_data_items, gfp, true); 65213d1ad16SIlya Dryomov if (!msg) 65313d1ad16SIlya Dryomov return -ENOMEM; 6543d14c5d2SYehuda Sadeh 6553d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 6563d14c5d2SYehuda Sadeh req->r_request = msg; 6573d14c5d2SYehuda Sadeh 65813d1ad16SIlya Dryomov /* create reply message */ 65913d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 660711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 661711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 66213d1ad16SIlya Dryomov 66313d1ad16SIlya Dryomov if (req->r_mempool) 6640d9c1ab3SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, msg_size, 6650d9c1ab3SIlya Dryomov num_reply_data_items); 66613d1ad16SIlya Dryomov else 6670d9c1ab3SIlya Dryomov msg = ceph_msg_new2(CEPH_MSG_OSD_OPREPLY, msg_size, 6680d9c1ab3SIlya Dryomov num_reply_data_items, gfp, true); 66913d1ad16SIlya Dryomov if (!msg) 67013d1ad16SIlya Dryomov return -ENOMEM; 67113d1ad16SIlya Dryomov 67213d1ad16SIlya Dryomov req->r_reply = msg; 67313d1ad16SIlya Dryomov 67413d1ad16SIlya Dryomov return 0; 67513d1ad16SIlya Dryomov } 6763d14c5d2SYehuda Sadeh 677a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 678a8dd0a37SAlex Elder { 679a8dd0a37SAlex Elder switch (opcode) { 68070b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 68170b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 68270b5bfa3SIlya Dryomov #undef GENERATE_CASE 683a8dd0a37SAlex Elder default: 684a8dd0a37SAlex Elder return false; 685a8dd0a37SAlex Elder } 686a8dd0a37SAlex Elder } 687a8dd0a37SAlex Elder 6880d9c1ab3SIlya Dryomov static void get_num_data_items(struct ceph_osd_request *req, 6890d9c1ab3SIlya Dryomov int *num_request_data_items, 6900d9c1ab3SIlya Dryomov int *num_reply_data_items) 6910d9c1ab3SIlya Dryomov { 6920d9c1ab3SIlya Dryomov struct ceph_osd_req_op *op; 6930d9c1ab3SIlya Dryomov 6940d9c1ab3SIlya Dryomov *num_request_data_items = 0; 6950d9c1ab3SIlya Dryomov *num_reply_data_items = 0; 6960d9c1ab3SIlya Dryomov 6970d9c1ab3SIlya Dryomov for (op = req->r_ops; op != &req->r_ops[req->r_num_ops]; op++) { 6980d9c1ab3SIlya Dryomov switch (op->op) { 6990d9c1ab3SIlya Dryomov /* request */ 7000d9c1ab3SIlya Dryomov case CEPH_OSD_OP_WRITE: 7010d9c1ab3SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 7020d9c1ab3SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 7030d9c1ab3SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 7040d9c1ab3SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 7050d9c1ab3SIlya Dryomov *num_request_data_items += 1; 7060d9c1ab3SIlya Dryomov break; 7070d9c1ab3SIlya Dryomov 7080d9c1ab3SIlya Dryomov /* reply */ 7090d9c1ab3SIlya Dryomov case CEPH_OSD_OP_STAT: 7100d9c1ab3SIlya Dryomov case CEPH_OSD_OP_READ: 7110d9c1ab3SIlya Dryomov case CEPH_OSD_OP_LIST_WATCHERS: 7120d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 7130d9c1ab3SIlya Dryomov break; 7140d9c1ab3SIlya Dryomov 7150d9c1ab3SIlya Dryomov /* both */ 7160d9c1ab3SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 7170d9c1ab3SIlya Dryomov *num_request_data_items += 1; 7180d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 7190d9c1ab3SIlya Dryomov break; 7200d9c1ab3SIlya Dryomov case CEPH_OSD_OP_CALL: 7210d9c1ab3SIlya Dryomov *num_request_data_items += 2; 7220d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 7230d9c1ab3SIlya Dryomov break; 7240d9c1ab3SIlya Dryomov 7250d9c1ab3SIlya Dryomov default: 7260d9c1ab3SIlya Dryomov WARN_ON(!osd_req_opcode_valid(op->op)); 7270d9c1ab3SIlya Dryomov break; 7280d9c1ab3SIlya Dryomov } 7290d9c1ab3SIlya Dryomov } 7300d9c1ab3SIlya Dryomov } 7310d9c1ab3SIlya Dryomov 7320d9c1ab3SIlya Dryomov /* 7330d9c1ab3SIlya Dryomov * oid, oloc and OSD op opcode(s) must be filled in before this function 7340d9c1ab3SIlya Dryomov * is called. 7350d9c1ab3SIlya Dryomov */ 7360d9c1ab3SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 7370d9c1ab3SIlya Dryomov { 7380d9c1ab3SIlya Dryomov int num_request_data_items, num_reply_data_items; 7390d9c1ab3SIlya Dryomov 7400d9c1ab3SIlya Dryomov get_num_data_items(req, &num_request_data_items, &num_reply_data_items); 7410d9c1ab3SIlya Dryomov return __ceph_osdc_alloc_messages(req, gfp, num_request_data_items, 7420d9c1ab3SIlya Dryomov num_reply_data_items); 7430d9c1ab3SIlya Dryomov } 7440d9c1ab3SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 7450d9c1ab3SIlya Dryomov 74633803f33SAlex Elder /* 74733803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 74833803f33SAlex Elder * other information associated with them. It also serves as a 74933803f33SAlex Elder * common init routine for all the other init functions, below. 75033803f33SAlex Elder */ 751c99d2d4aSAlex Elder static struct ceph_osd_req_op * 75249719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 753144cba14SYan, Zheng u16 opcode, u32 flags) 75433803f33SAlex Elder { 755c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 756c99d2d4aSAlex Elder 757c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 75833803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 75933803f33SAlex Elder 760c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 76133803f33SAlex Elder memset(op, 0, sizeof (*op)); 76233803f33SAlex Elder op->op = opcode; 763144cba14SYan, Zheng op->flags = flags; 764c99d2d4aSAlex Elder 765c99d2d4aSAlex Elder return op; 76633803f33SAlex Elder } 76733803f33SAlex Elder 76849719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 769144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 77049719778SAlex Elder { 771144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 77249719778SAlex Elder } 77349719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 77449719778SAlex Elder 775c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 776c99d2d4aSAlex Elder unsigned int which, u16 opcode, 77733803f33SAlex Elder u64 offset, u64 length, 77833803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 77933803f33SAlex Elder { 780144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 781144cba14SYan, Zheng opcode, 0); 78233803f33SAlex Elder size_t payload_len = 0; 78333803f33SAlex Elder 784ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 785e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 786e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 78733803f33SAlex Elder 78833803f33SAlex Elder op->extent.offset = offset; 78933803f33SAlex Elder op->extent.length = length; 79033803f33SAlex Elder op->extent.truncate_size = truncate_size; 79133803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 792e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 79333803f33SAlex Elder payload_len += length; 79433803f33SAlex Elder 795de2aa102SIlya Dryomov op->indata_len = payload_len; 79633803f33SAlex Elder } 79733803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 79833803f33SAlex Elder 799c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 800c99d2d4aSAlex Elder unsigned int which, u64 length) 801e5975c7cSAlex Elder { 802c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 803c99d2d4aSAlex Elder u64 previous; 804c99d2d4aSAlex Elder 805c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 806c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 807c99d2d4aSAlex Elder previous = op->extent.length; 808e5975c7cSAlex Elder 809e5975c7cSAlex Elder if (length == previous) 810e5975c7cSAlex Elder return; /* Nothing to do */ 811e5975c7cSAlex Elder BUG_ON(length > previous); 812e5975c7cSAlex Elder 813e5975c7cSAlex Elder op->extent.length = length; 814d641df81SYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 815de2aa102SIlya Dryomov op->indata_len -= previous - length; 816e5975c7cSAlex Elder } 817e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 818e5975c7cSAlex Elder 8192c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 8202c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 8212c63f49aSYan, Zheng { 8222c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 8232c63f49aSYan, Zheng 8242c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 8252c63f49aSYan, Zheng 8262c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 8272c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 8282c63f49aSYan, Zheng /* dup previous one */ 8292c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 8302c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 8312c63f49aSYan, Zheng op->extent = prev_op->extent; 8322c63f49aSYan, Zheng /* adjust offset */ 8332c63f49aSYan, Zheng op->extent.offset += offset_inc; 8342c63f49aSYan, Zheng op->extent.length -= offset_inc; 8352c63f49aSYan, Zheng 8362c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 8372c63f49aSYan, Zheng op->indata_len -= offset_inc; 8382c63f49aSYan, Zheng } 8392c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 8402c63f49aSYan, Zheng 841fe943d50SChengguang Xu int osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 84224639ce5SIlya Dryomov const char *class, const char *method) 84333803f33SAlex Elder { 84424639ce5SIlya Dryomov struct ceph_osd_req_op *op; 8455f562df5SAlex Elder struct ceph_pagelist *pagelist; 84633803f33SAlex Elder size_t payload_len = 0; 84733803f33SAlex Elder size_t size; 84833803f33SAlex Elder 84924639ce5SIlya Dryomov op = _osd_req_op_init(osd_req, which, CEPH_OSD_OP_CALL, 0); 85033803f33SAlex Elder 85133165d47SIlya Dryomov pagelist = ceph_pagelist_alloc(GFP_NOFS); 852fe943d50SChengguang Xu if (!pagelist) 853fe943d50SChengguang Xu return -ENOMEM; 854fe943d50SChengguang Xu 85533803f33SAlex Elder op->cls.class_name = class; 85633803f33SAlex Elder size = strlen(class); 85733803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 85833803f33SAlex Elder op->cls.class_len = size; 8595f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 86033803f33SAlex Elder payload_len += size; 86133803f33SAlex Elder 86233803f33SAlex Elder op->cls.method_name = method; 86333803f33SAlex Elder size = strlen(method); 86433803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 86533803f33SAlex Elder op->cls.method_len = size; 8665f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 86733803f33SAlex Elder payload_len += size; 86833803f33SAlex Elder 869a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 8705f562df5SAlex Elder 871de2aa102SIlya Dryomov op->indata_len = payload_len; 872fe943d50SChengguang Xu return 0; 87333803f33SAlex Elder } 87433803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 8758c042b0dSAlex Elder 876d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 877d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 878d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 879d74b50beSYan, Zheng { 880144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 881144cba14SYan, Zheng opcode, 0); 882d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 883d74b50beSYan, Zheng size_t payload_len; 884d74b50beSYan, Zheng 885d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 886d74b50beSYan, Zheng 88733165d47SIlya Dryomov pagelist = ceph_pagelist_alloc(GFP_NOFS); 888d74b50beSYan, Zheng if (!pagelist) 889d74b50beSYan, Zheng return -ENOMEM; 890d74b50beSYan, Zheng 891d74b50beSYan, Zheng payload_len = strlen(name); 892d74b50beSYan, Zheng op->xattr.name_len = payload_len; 893d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 894d74b50beSYan, Zheng 895d74b50beSYan, Zheng op->xattr.value_len = size; 896d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 897d74b50beSYan, Zheng payload_len += size; 898d74b50beSYan, Zheng 899d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 900d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 901d74b50beSYan, Zheng 902d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 903de2aa102SIlya Dryomov op->indata_len = payload_len; 904d74b50beSYan, Zheng return 0; 905d74b50beSYan, Zheng } 906d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 907d74b50beSYan, Zheng 908922dab61SIlya Dryomov /* 909922dab61SIlya Dryomov * @watch_opcode: CEPH_OSD_WATCH_OP_* 910922dab61SIlya Dryomov */ 911922dab61SIlya Dryomov static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, 912922dab61SIlya Dryomov u64 cookie, u8 watch_opcode) 91333803f33SAlex Elder { 914922dab61SIlya Dryomov struct ceph_osd_req_op *op; 91533803f33SAlex Elder 916922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); 91733803f33SAlex Elder op->watch.cookie = cookie; 918922dab61SIlya Dryomov op->watch.op = watch_opcode; 919922dab61SIlya Dryomov op->watch.gen = 0; 92033803f33SAlex Elder } 92133803f33SAlex Elder 922c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 923c647b8a8SIlya Dryomov unsigned int which, 924c647b8a8SIlya Dryomov u64 expected_object_size, 925c647b8a8SIlya Dryomov u64 expected_write_size) 926c647b8a8SIlya Dryomov { 927c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 928144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 929144cba14SYan, Zheng 0); 930c647b8a8SIlya Dryomov 931c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 932c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 933c647b8a8SIlya Dryomov 934c647b8a8SIlya Dryomov /* 935c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 936c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 937c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 938c647b8a8SIlya Dryomov */ 939c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 940c647b8a8SIlya Dryomov } 941c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 942c647b8a8SIlya Dryomov 94390af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 944ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 945ec9123c5SAlex Elder { 946ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 947ec9123c5SAlex Elder 948ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 949ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 950ec9123c5SAlex Elder if (length) 95190af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 952ec9123c5SAlex Elder length, osd_data->alignment); 953ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 954ec9123c5SAlex Elder BUG_ON(!length); 95590af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 956ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 957ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 9585359a17dSIlya Dryomov ceph_msg_data_add_bio(msg, &osd_data->bio_pos, length); 959ec9123c5SAlex Elder #endif 960b9e281c2SIlya Dryomov } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BVECS) { 961b9e281c2SIlya Dryomov ceph_msg_data_add_bvecs(msg, &osd_data->bvec_pos); 962ec9123c5SAlex Elder } else { 963ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 964ec9123c5SAlex Elder } 965ec9123c5SAlex Elder } 966ec9123c5SAlex Elder 967bb873b53SIlya Dryomov static u32 osd_req_encode_op(struct ceph_osd_op *dst, 968bb873b53SIlya Dryomov const struct ceph_osd_req_op *src) 9693d14c5d2SYehuda Sadeh { 970065a68f9SAlex Elder switch (src->op) { 971fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 972fbfab539SAlex Elder break; 9733d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 9743d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 975e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 976ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 977ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 978175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 979175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 9803d14c5d2SYehuda Sadeh dst->extent.truncate_size = 9813d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 9823d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 9833d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 9843d14c5d2SYehuda Sadeh break; 9853d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 9863d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 9873d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 988bb873b53SIlya Dryomov dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 9893d14c5d2SYehuda Sadeh break; 990a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 991a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 992922dab61SIlya Dryomov dst->watch.ver = cpu_to_le64(0); 993922dab61SIlya Dryomov dst->watch.op = src->watch.op; 994922dab61SIlya Dryomov dst->watch.gen = cpu_to_le32(src->watch.gen); 995922dab61SIlya Dryomov break; 996922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 997a40c4f10SYehuda Sadeh break; 99819079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 99919079203SIlya Dryomov dst->notify.cookie = cpu_to_le64(src->notify.cookie); 100019079203SIlya Dryomov break; 1001a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 1002a4ed38d7SDouglas Fuller break; 1003c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 1004c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 1005c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 1006c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 1007c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 1008c647b8a8SIlya Dryomov break; 1009d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 1010d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 1011d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 1012d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 1013d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 1014d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 1015d74b50beSYan, Zheng break; 1016864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 1017864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 1018864e9197SYan, Zheng break; 10193d14c5d2SYehuda Sadeh default: 10204c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 10218f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 10224c46459cSAlex Elder WARN_ON(1); 1023a8dd0a37SAlex Elder 1024a8dd0a37SAlex Elder return 0; 10253d14c5d2SYehuda Sadeh } 10267b25bf5fSIlya Dryomov 1027a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 10287b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 1029de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 1030175face2SAlex Elder 1031bb873b53SIlya Dryomov return src->indata_len; 10323d14c5d2SYehuda Sadeh } 10333d14c5d2SYehuda Sadeh 10343d14c5d2SYehuda Sadeh /* 10353d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 10363d14c5d2SYehuda Sadeh * extent as needed. 10373d14c5d2SYehuda Sadeh * 10383d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 10393d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 10403d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 10413d14c5d2SYehuda Sadeh */ 10423d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 10433d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 10443d14c5d2SYehuda Sadeh struct ceph_vino vino, 1045715e4cd4SYan, Zheng u64 off, u64 *plen, 1046715e4cd4SYan, Zheng unsigned int which, int num_ops, 10473d14c5d2SYehuda Sadeh int opcode, int flags, 10483d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 10493d14c5d2SYehuda Sadeh u32 truncate_seq, 10503d14c5d2SYehuda Sadeh u64 truncate_size, 1051153e5167SAlex Elder bool use_mempool) 10523d14c5d2SYehuda Sadeh { 10533d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 105475d1c941SAlex Elder u64 objnum = 0; 105575d1c941SAlex Elder u64 objoff = 0; 105675d1c941SAlex Elder u64 objlen = 0; 10576816282dSSage Weil int r; 10583d14c5d2SYehuda Sadeh 1059ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 1060864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 1061864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 10623d14c5d2SYehuda Sadeh 1063acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 1064ae7ca4a3SAlex Elder GFP_NOFS); 106513d1ad16SIlya Dryomov if (!req) { 106613d1ad16SIlya Dryomov r = -ENOMEM; 106713d1ad16SIlya Dryomov goto fail; 106813d1ad16SIlya Dryomov } 106979528734SAlex Elder 10703d14c5d2SYehuda Sadeh /* calculate max write size */ 1071a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 107213d1ad16SIlya Dryomov if (r) 107313d1ad16SIlya Dryomov goto fail; 1074a19dadfbSAlex Elder 1075864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 1076144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 1077864e9197SYan, Zheng } else { 10787627151eSYan, Zheng u32 object_size = layout->object_size; 1079864e9197SYan, Zheng u32 object_base = off - objoff; 1080ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 1081d18d1e28SAlex Elder if (truncate_size <= object_base) { 1082d18d1e28SAlex Elder truncate_size = 0; 1083d18d1e28SAlex Elder } else { 1084d18d1e28SAlex Elder truncate_size -= object_base; 1085d18d1e28SAlex Elder if (truncate_size > object_size) 1086d18d1e28SAlex Elder truncate_size = object_size; 1087d18d1e28SAlex Elder } 1088ccca4e37SYan, Zheng } 1089715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 1090b0270324SAlex Elder truncate_size, truncate_seq); 1091864e9197SYan, Zheng } 1092d18d1e28SAlex Elder 1093bb873b53SIlya Dryomov req->r_flags = flags; 10947627151eSYan, Zheng req->r_base_oloc.pool = layout->pool_id; 109530c156d9SYan, Zheng req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns); 1096d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 1097dbe0fc41SAlex Elder 1098bb873b53SIlya Dryomov req->r_snapid = vino.snap; 1099bb873b53SIlya Dryomov if (flags & CEPH_OSD_FLAG_WRITE) 1100bb873b53SIlya Dryomov req->r_data_offset = off; 1101bb873b53SIlya Dryomov 11020d9c1ab3SIlya Dryomov if (num_ops > 1) 11030d9c1ab3SIlya Dryomov /* 11040d9c1ab3SIlya Dryomov * This is a special case for ceph_writepages_start(), but it 11050d9c1ab3SIlya Dryomov * also covers ceph_uninline_data(). If more multi-op request 11060d9c1ab3SIlya Dryomov * use cases emerge, we will need a separate helper. 11070d9c1ab3SIlya Dryomov */ 11080d9c1ab3SIlya Dryomov r = __ceph_osdc_alloc_messages(req, GFP_NOFS, num_ops, 0); 11090d9c1ab3SIlya Dryomov else 111013d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 111113d1ad16SIlya Dryomov if (r) 111213d1ad16SIlya Dryomov goto fail; 111313d1ad16SIlya Dryomov 11143d14c5d2SYehuda Sadeh return req; 111513d1ad16SIlya Dryomov 111613d1ad16SIlya Dryomov fail: 111713d1ad16SIlya Dryomov ceph_osdc_put_request(req); 111813d1ad16SIlya Dryomov return ERR_PTR(r); 11193d14c5d2SYehuda Sadeh } 11203d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 11213d14c5d2SYehuda Sadeh 11223d14c5d2SYehuda Sadeh /* 11233d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 11243d14c5d2SYehuda Sadeh */ 1125fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 11264609245eSIlya Dryomov DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) 11273d14c5d2SYehuda Sadeh 112866850df5SIlya Dryomov /* 112966850df5SIlya Dryomov * Call @fn on each OSD request as long as @fn returns 0. 113066850df5SIlya Dryomov */ 113166850df5SIlya Dryomov static void for_each_request(struct ceph_osd_client *osdc, 113266850df5SIlya Dryomov int (*fn)(struct ceph_osd_request *req, void *arg), 113366850df5SIlya Dryomov void *arg) 113466850df5SIlya Dryomov { 113566850df5SIlya Dryomov struct rb_node *n, *p; 113666850df5SIlya Dryomov 113766850df5SIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 113866850df5SIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 113966850df5SIlya Dryomov 114066850df5SIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 114166850df5SIlya Dryomov struct ceph_osd_request *req = 114266850df5SIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 114366850df5SIlya Dryomov 114466850df5SIlya Dryomov p = rb_next(p); 114566850df5SIlya Dryomov if (fn(req, arg)) 114666850df5SIlya Dryomov return; 114766850df5SIlya Dryomov } 114866850df5SIlya Dryomov } 114966850df5SIlya Dryomov 115066850df5SIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 115166850df5SIlya Dryomov struct ceph_osd_request *req = 115266850df5SIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 115366850df5SIlya Dryomov 115466850df5SIlya Dryomov p = rb_next(p); 115566850df5SIlya Dryomov if (fn(req, arg)) 115666850df5SIlya Dryomov return; 115766850df5SIlya Dryomov } 115866850df5SIlya Dryomov } 115966850df5SIlya Dryomov 11600247a0cfSIlya Dryomov static bool osd_homeless(struct ceph_osd *osd) 11610247a0cfSIlya Dryomov { 11620247a0cfSIlya Dryomov return osd->o_osd == CEPH_HOMELESS_OSD; 11630247a0cfSIlya Dryomov } 11640247a0cfSIlya Dryomov 11655aea3dcdSIlya Dryomov static bool osd_registered(struct ceph_osd *osd) 11663d14c5d2SYehuda Sadeh { 11675aea3dcdSIlya Dryomov verify_osdc_locked(osd->o_osdc); 11683d14c5d2SYehuda Sadeh 11695aea3dcdSIlya Dryomov return !RB_EMPTY_NODE(&osd->o_node); 11703d14c5d2SYehuda Sadeh } 11713d14c5d2SYehuda Sadeh 11723d14c5d2SYehuda Sadeh /* 11730247a0cfSIlya Dryomov * Assumes @osd is zero-initialized. 11740247a0cfSIlya Dryomov */ 11750247a0cfSIlya Dryomov static void osd_init(struct ceph_osd *osd) 11760247a0cfSIlya Dryomov { 117702113a0fSElena Reshetova refcount_set(&osd->o_ref, 1); 11780247a0cfSIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 11795aea3dcdSIlya Dryomov osd->o_requests = RB_ROOT; 1180922dab61SIlya Dryomov osd->o_linger_requests = RB_ROOT; 1181a02a946dSIlya Dryomov osd->o_backoff_mappings = RB_ROOT; 1182a02a946dSIlya Dryomov osd->o_backoffs_by_id = RB_ROOT; 11830247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_osd_lru); 11840247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_keepalive_item); 11850247a0cfSIlya Dryomov osd->o_incarnation = 1; 11865aea3dcdSIlya Dryomov mutex_init(&osd->lock); 11870247a0cfSIlya Dryomov } 11880247a0cfSIlya Dryomov 11890247a0cfSIlya Dryomov static void osd_cleanup(struct ceph_osd *osd) 11900247a0cfSIlya Dryomov { 11910247a0cfSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); 11925aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 1193922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 1194a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoff_mappings)); 1195a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoffs_by_id)); 11960247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_osd_lru)); 11970247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_keepalive_item)); 11980247a0cfSIlya Dryomov 11990247a0cfSIlya Dryomov if (osd->o_auth.authorizer) { 12000247a0cfSIlya Dryomov WARN_ON(osd_homeless(osd)); 12010247a0cfSIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 12020247a0cfSIlya Dryomov } 12030247a0cfSIlya Dryomov } 12040247a0cfSIlya Dryomov 12050247a0cfSIlya Dryomov /* 12063d14c5d2SYehuda Sadeh * Track open sessions with osds. 12073d14c5d2SYehuda Sadeh */ 1208e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 12093d14c5d2SYehuda Sadeh { 12103d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12113d14c5d2SYehuda Sadeh 12120247a0cfSIlya Dryomov WARN_ON(onum == CEPH_HOMELESS_OSD); 12130247a0cfSIlya Dryomov 12147a28f59bSIlya Dryomov osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); 12150247a0cfSIlya Dryomov osd_init(osd); 12163d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1217e10006f8SAlex Elder osd->o_osd = onum; 12183d14c5d2SYehuda Sadeh 1219b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 12203d14c5d2SYehuda Sadeh 12213d14c5d2SYehuda Sadeh return osd; 12223d14c5d2SYehuda Sadeh } 12233d14c5d2SYehuda Sadeh 12243d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 12253d14c5d2SYehuda Sadeh { 122602113a0fSElena Reshetova if (refcount_inc_not_zero(&osd->o_ref)) { 122702113a0fSElena Reshetova dout("get_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref)-1, 122802113a0fSElena Reshetova refcount_read(&osd->o_ref)); 12293d14c5d2SYehuda Sadeh return osd; 12303d14c5d2SYehuda Sadeh } else { 12313d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 12323d14c5d2SYehuda Sadeh return NULL; 12333d14c5d2SYehuda Sadeh } 12343d14c5d2SYehuda Sadeh } 12353d14c5d2SYehuda Sadeh 12363d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 12373d14c5d2SYehuda Sadeh { 123802113a0fSElena Reshetova dout("put_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref), 123902113a0fSElena Reshetova refcount_read(&osd->o_ref) - 1); 124002113a0fSElena Reshetova if (refcount_dec_and_test(&osd->o_ref)) { 12410247a0cfSIlya Dryomov osd_cleanup(osd); 12423d14c5d2SYehuda Sadeh kfree(osd); 12433d14c5d2SYehuda Sadeh } 12443d14c5d2SYehuda Sadeh } 12453d14c5d2SYehuda Sadeh 1246fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1247fcd00b68SIlya Dryomov 12489dd2845cSIlya Dryomov static void __move_osd_to_lru(struct ceph_osd *osd) 12493d14c5d2SYehuda Sadeh { 12509dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 12519dd2845cSIlya Dryomov 12529dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 12533d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1254bbf37ec3SIlya Dryomov 12559dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 12563d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 12579dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 12589dd2845cSIlya Dryomov 1259a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 12603d14c5d2SYehuda Sadeh } 12613d14c5d2SYehuda Sadeh 12629dd2845cSIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd *osd) 1263bbf37ec3SIlya Dryomov { 12645aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1265922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) 12669dd2845cSIlya Dryomov __move_osd_to_lru(osd); 1267bbf37ec3SIlya Dryomov } 1268bbf37ec3SIlya Dryomov 12693d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 12703d14c5d2SYehuda Sadeh { 12719dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 12729dd2845cSIlya Dryomov 12739dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 12749dd2845cSIlya Dryomov 12759dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 12763d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 12773d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 12789dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 12793d14c5d2SYehuda Sadeh } 12803d14c5d2SYehuda Sadeh 12813d14c5d2SYehuda Sadeh /* 12825aea3dcdSIlya Dryomov * Close the connection and assign any leftover requests to the 12835aea3dcdSIlya Dryomov * homeless session. 12845aea3dcdSIlya Dryomov */ 12855aea3dcdSIlya Dryomov static void close_osd(struct ceph_osd *osd) 12865aea3dcdSIlya Dryomov { 12875aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 12885aea3dcdSIlya Dryomov struct rb_node *n; 12895aea3dcdSIlya Dryomov 12905aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 12915aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 12925aea3dcdSIlya Dryomov 12935aea3dcdSIlya Dryomov ceph_con_close(&osd->o_con); 12945aea3dcdSIlya Dryomov 12955aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 12965aea3dcdSIlya Dryomov struct ceph_osd_request *req = 12975aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 12985aea3dcdSIlya Dryomov 12995aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 13005aea3dcdSIlya Dryomov 13015aea3dcdSIlya Dryomov dout(" reassigning req %p tid %llu\n", req, req->r_tid); 13025aea3dcdSIlya Dryomov unlink_request(osd, req); 13035aea3dcdSIlya Dryomov link_request(&osdc->homeless_osd, req); 13045aea3dcdSIlya Dryomov } 1305922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 1306922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1307922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 1308922dab61SIlya Dryomov 1309922dab61SIlya Dryomov n = rb_next(n); /* unlink_linger() */ 1310922dab61SIlya Dryomov 1311922dab61SIlya Dryomov dout(" reassigning lreq %p linger_id %llu\n", lreq, 1312922dab61SIlya Dryomov lreq->linger_id); 1313922dab61SIlya Dryomov unlink_linger(osd, lreq); 1314922dab61SIlya Dryomov link_linger(&osdc->homeless_osd, lreq); 1315922dab61SIlya Dryomov } 1316a02a946dSIlya Dryomov clear_backoffs(osd); 13175aea3dcdSIlya Dryomov 13185aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 13195aea3dcdSIlya Dryomov erase_osd(&osdc->osds, osd); 13205aea3dcdSIlya Dryomov put_osd(osd); 13215aea3dcdSIlya Dryomov } 13225aea3dcdSIlya Dryomov 13235aea3dcdSIlya Dryomov /* 13243d14c5d2SYehuda Sadeh * reset osd connect 13253d14c5d2SYehuda Sadeh */ 13265aea3dcdSIlya Dryomov static int reopen_osd(struct ceph_osd *osd) 13273d14c5d2SYehuda Sadeh { 1328c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 13293d14c5d2SYehuda Sadeh 13305aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 13315aea3dcdSIlya Dryomov 13325aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1333922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) { 13345aea3dcdSIlya Dryomov close_osd(osd); 1335c3acb181SAlex Elder return -ENODEV; 1336c3acb181SAlex Elder } 1337c3acb181SAlex Elder 13385aea3dcdSIlya Dryomov peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; 1339c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 13403d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 13415aea3dcdSIlya Dryomov struct rb_node *n; 1342c3acb181SAlex Elder 13433d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 13440b4af2e8SIlya Dryomov "letting msgr retry\n"); 13453d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 13465aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 13475aea3dcdSIlya Dryomov struct ceph_osd_request *req = 13485aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 13493d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 13505aea3dcdSIlya Dryomov } 1351c3acb181SAlex Elder 1352c3acb181SAlex Elder return -EAGAIN; 13533d14c5d2SYehuda Sadeh } 1354c3acb181SAlex Elder 1355c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1356c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1357c3acb181SAlex Elder osd->o_incarnation++; 1358c3acb181SAlex Elder 1359c3acb181SAlex Elder return 0; 13603d14c5d2SYehuda Sadeh } 13613d14c5d2SYehuda Sadeh 13625aea3dcdSIlya Dryomov static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, 13635aea3dcdSIlya Dryomov bool wrlocked) 13643d14c5d2SYehuda Sadeh { 13655aea3dcdSIlya Dryomov struct ceph_osd *osd; 13665aea3dcdSIlya Dryomov 13675aea3dcdSIlya Dryomov if (wrlocked) 13685aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 13695aea3dcdSIlya Dryomov else 13705aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 13715aea3dcdSIlya Dryomov 13725aea3dcdSIlya Dryomov if (o != CEPH_HOMELESS_OSD) 13735aea3dcdSIlya Dryomov osd = lookup_osd(&osdc->osds, o); 13745aea3dcdSIlya Dryomov else 13755aea3dcdSIlya Dryomov osd = &osdc->homeless_osd; 13765aea3dcdSIlya Dryomov if (!osd) { 13775aea3dcdSIlya Dryomov if (!wrlocked) 13785aea3dcdSIlya Dryomov return ERR_PTR(-EAGAIN); 13795aea3dcdSIlya Dryomov 13805aea3dcdSIlya Dryomov osd = create_osd(osdc, o); 13815aea3dcdSIlya Dryomov insert_osd(&osdc->osds, osd); 13825aea3dcdSIlya Dryomov ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, 13835aea3dcdSIlya Dryomov &osdc->osdmap->osd_addr[osd->o_osd]); 13845aea3dcdSIlya Dryomov } 13855aea3dcdSIlya Dryomov 13865aea3dcdSIlya Dryomov dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); 13875aea3dcdSIlya Dryomov return osd; 1388a40c4f10SYehuda Sadeh } 1389a40c4f10SYehuda Sadeh 13903d14c5d2SYehuda Sadeh /* 13915aea3dcdSIlya Dryomov * Create request <-> OSD session relation. 13925aea3dcdSIlya Dryomov * 13935aea3dcdSIlya Dryomov * @req has to be assigned a tid, @osd may be homeless. 13943d14c5d2SYehuda Sadeh */ 13955aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) 13963d14c5d2SYehuda Sadeh { 13975aea3dcdSIlya Dryomov verify_osd_locked(osd); 13985aea3dcdSIlya Dryomov WARN_ON(!req->r_tid || req->r_osd); 13995aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 140035f9f8a0SSage Weil req, req->r_tid); 14015aea3dcdSIlya Dryomov 14025aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 14035aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 14045aea3dcdSIlya Dryomov else 14055aea3dcdSIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 14065aea3dcdSIlya Dryomov 14075aea3dcdSIlya Dryomov get_osd(osd); 14085aea3dcdSIlya Dryomov insert_request(&osd->o_requests, req); 14095aea3dcdSIlya Dryomov req->r_osd = osd; 141035f9f8a0SSage Weil } 141135f9f8a0SSage Weil 14125aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) 14133d14c5d2SYehuda Sadeh { 14145aea3dcdSIlya Dryomov verify_osd_locked(osd); 14155aea3dcdSIlya Dryomov WARN_ON(req->r_osd != osd); 14165aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 14175aea3dcdSIlya Dryomov req, req->r_tid); 14185aea3dcdSIlya Dryomov 14195aea3dcdSIlya Dryomov req->r_osd = NULL; 14205aea3dcdSIlya Dryomov erase_request(&osd->o_requests, req); 14215aea3dcdSIlya Dryomov put_osd(osd); 14225aea3dcdSIlya Dryomov 14235aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 14245aea3dcdSIlya Dryomov maybe_move_osd_to_lru(osd); 14255aea3dcdSIlya Dryomov else 14265aea3dcdSIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 14273d14c5d2SYehuda Sadeh } 14283d14c5d2SYehuda Sadeh 142963244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 143063244fa1SIlya Dryomov { 143163244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 143263244fa1SIlya Dryomov } 143363244fa1SIlya Dryomov 143442c1b124SIlya Dryomov static bool have_pool_full(struct ceph_osd_client *osdc) 143542c1b124SIlya Dryomov { 143642c1b124SIlya Dryomov struct rb_node *n; 143742c1b124SIlya Dryomov 143842c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 143942c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 144042c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 144142c1b124SIlya Dryomov 144242c1b124SIlya Dryomov if (__pool_full(pi)) 144342c1b124SIlya Dryomov return true; 144442c1b124SIlya Dryomov } 144542c1b124SIlya Dryomov 144642c1b124SIlya Dryomov return false; 144742c1b124SIlya Dryomov } 144842c1b124SIlya Dryomov 14495aea3dcdSIlya Dryomov static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) 14505aea3dcdSIlya Dryomov { 14515aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 14525aea3dcdSIlya Dryomov 14535aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 14545aea3dcdSIlya Dryomov if (!pi) 14555aea3dcdSIlya Dryomov return false; 14565aea3dcdSIlya Dryomov 14575aea3dcdSIlya Dryomov return __pool_full(pi); 14585aea3dcdSIlya Dryomov } 14595aea3dcdSIlya Dryomov 14603d14c5d2SYehuda Sadeh /* 1461d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1462d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1463d29adb34SJosh Durgin */ 146463244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 146563244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 146663244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 146763244fa1SIlya Dryomov { 1468b7ec35b3SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 1469b7ec35b3SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 1470b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 147163244fa1SIlya Dryomov __pool_full(pi); 147263244fa1SIlya Dryomov 14736d637a54SIlya Dryomov WARN_ON(pi->id != t->target_oloc.pool); 147458eb7932SJeff Layton return ((t->flags & CEPH_OSD_FLAG_READ) && pauserd) || 147558eb7932SJeff Layton ((t->flags & CEPH_OSD_FLAG_WRITE) && pausewr) || 147658eb7932SJeff Layton (osdc->osdmap->epoch < osdc->epoch_barrier); 147763244fa1SIlya Dryomov } 147863244fa1SIlya Dryomov 147963244fa1SIlya Dryomov enum calc_target_result { 148063244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 148163244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 148263244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 148363244fa1SIlya Dryomov }; 148463244fa1SIlya Dryomov 148563244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 148663244fa1SIlya Dryomov struct ceph_osd_request_target *t, 14877de030d6SIlya Dryomov struct ceph_connection *con, 148863244fa1SIlya Dryomov bool any_change) 148963244fa1SIlya Dryomov { 149063244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 149163244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 149263244fa1SIlya Dryomov struct ceph_osds up, acting; 149363244fa1SIlya Dryomov bool force_resend = false; 149484ed45dfSIlya Dryomov bool unpaused = false; 149584ed45dfSIlya Dryomov bool legacy_change; 14967de030d6SIlya Dryomov bool split = false; 1497b7ec35b3SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); 1498ae78dd81SIlya Dryomov bool recovery_deletes = ceph_osdmap_flag(osdc, 1499ae78dd81SIlya Dryomov CEPH_OSDMAP_RECOVERY_DELETES); 150063244fa1SIlya Dryomov enum calc_target_result ct_res; 150163244fa1SIlya Dryomov 150204c7d789SIlya Dryomov t->epoch = osdc->osdmap->epoch; 150363244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 150463244fa1SIlya Dryomov if (!pi) { 150563244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 150663244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 150763244fa1SIlya Dryomov goto out; 150863244fa1SIlya Dryomov } 150963244fa1SIlya Dryomov 151063244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 1511dc93e0e2SIlya Dryomov if (t->last_force_resend < pi->last_force_request_resend) { 1512dc93e0e2SIlya Dryomov t->last_force_resend = pi->last_force_request_resend; 151363244fa1SIlya Dryomov force_resend = true; 1514dc93e0e2SIlya Dryomov } else if (t->last_force_resend == 0) { 151563244fa1SIlya Dryomov force_resend = true; 151663244fa1SIlya Dryomov } 151763244fa1SIlya Dryomov } 151863244fa1SIlya Dryomov 1519db098ec4SIlya Dryomov /* apply tiering */ 1520db098ec4SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 1521db098ec4SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 1522db098ec4SIlya Dryomov if ((t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 152363244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) 152463244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 152563244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) 152663244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 15276d637a54SIlya Dryomov 15286d637a54SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->target_oloc.pool); 15296d637a54SIlya Dryomov if (!pi) { 15306d637a54SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 15316d637a54SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 15326d637a54SIlya Dryomov goto out; 15336d637a54SIlya Dryomov } 153463244fa1SIlya Dryomov } 153563244fa1SIlya Dryomov 1536a86f009fSIlya Dryomov __ceph_object_locator_to_pg(pi, &t->target_oid, &t->target_oloc, &pgid); 153763244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 153863244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 153963244fa1SIlya Dryomov 1540df28152dSIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, pi, &pgid, &up, &acting); 154163244fa1SIlya Dryomov if (any_change && 154263244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 154363244fa1SIlya Dryomov &acting, 154463244fa1SIlya Dryomov &t->up, 154563244fa1SIlya Dryomov &up, 154663244fa1SIlya Dryomov t->size, 154763244fa1SIlya Dryomov pi->size, 154863244fa1SIlya Dryomov t->min_size, 154963244fa1SIlya Dryomov pi->min_size, 155063244fa1SIlya Dryomov t->pg_num, 155163244fa1SIlya Dryomov pi->pg_num, 155263244fa1SIlya Dryomov t->sort_bitwise, 155363244fa1SIlya Dryomov sort_bitwise, 1554ae78dd81SIlya Dryomov t->recovery_deletes, 1555ae78dd81SIlya Dryomov recovery_deletes, 155663244fa1SIlya Dryomov &last_pgid)) 155763244fa1SIlya Dryomov force_resend = true; 155863244fa1SIlya Dryomov 155963244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 156063244fa1SIlya Dryomov t->paused = false; 156184ed45dfSIlya Dryomov unpaused = true; 156263244fa1SIlya Dryomov } 156384ed45dfSIlya Dryomov legacy_change = ceph_pg_compare(&t->pgid, &pgid) || 156484ed45dfSIlya Dryomov ceph_osds_changed(&t->acting, &acting, any_change); 15657de030d6SIlya Dryomov if (t->pg_num) 15667de030d6SIlya Dryomov split = ceph_pg_is_split(&last_pgid, t->pg_num, pi->pg_num); 156763244fa1SIlya Dryomov 15687de030d6SIlya Dryomov if (legacy_change || force_resend || split) { 156963244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 1570df28152dSIlya Dryomov ceph_pg_to_primary_shard(osdc->osdmap, pi, &pgid, &t->spgid); 157163244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 157263244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 157363244fa1SIlya Dryomov t->size = pi->size; 157463244fa1SIlya Dryomov t->min_size = pi->min_size; 157563244fa1SIlya Dryomov t->pg_num = pi->pg_num; 157663244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 157763244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 1578ae78dd81SIlya Dryomov t->recovery_deletes = recovery_deletes; 157963244fa1SIlya Dryomov 158063244fa1SIlya Dryomov t->osd = acting.primary; 158163244fa1SIlya Dryomov } 158263244fa1SIlya Dryomov 15837de030d6SIlya Dryomov if (unpaused || legacy_change || force_resend || 15847de030d6SIlya Dryomov (split && con && CEPH_HAVE_FEATURE(con->peer_features, 15857de030d6SIlya Dryomov RESEND_ON_SPLIT))) 158684ed45dfSIlya Dryomov ct_res = CALC_TARGET_NEED_RESEND; 158784ed45dfSIlya Dryomov else 158884ed45dfSIlya Dryomov ct_res = CALC_TARGET_NO_ACTION; 158984ed45dfSIlya Dryomov 159063244fa1SIlya Dryomov out: 159163244fa1SIlya Dryomov dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); 159263244fa1SIlya Dryomov return ct_res; 159363244fa1SIlya Dryomov } 159463244fa1SIlya Dryomov 1595a02a946dSIlya Dryomov static struct ceph_spg_mapping *alloc_spg_mapping(void) 1596a02a946dSIlya Dryomov { 1597a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1598a02a946dSIlya Dryomov 1599a02a946dSIlya Dryomov spg = kmalloc(sizeof(*spg), GFP_NOIO); 1600a02a946dSIlya Dryomov if (!spg) 1601a02a946dSIlya Dryomov return NULL; 1602a02a946dSIlya Dryomov 1603a02a946dSIlya Dryomov RB_CLEAR_NODE(&spg->node); 1604a02a946dSIlya Dryomov spg->backoffs = RB_ROOT; 1605a02a946dSIlya Dryomov return spg; 1606a02a946dSIlya Dryomov } 1607a02a946dSIlya Dryomov 1608a02a946dSIlya Dryomov static void free_spg_mapping(struct ceph_spg_mapping *spg) 1609a02a946dSIlya Dryomov { 1610a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&spg->node)); 1611a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&spg->backoffs)); 1612a02a946dSIlya Dryomov 1613a02a946dSIlya Dryomov kfree(spg); 1614a02a946dSIlya Dryomov } 1615a02a946dSIlya Dryomov 1616a02a946dSIlya Dryomov /* 1617a02a946dSIlya Dryomov * rbtree of ceph_spg_mapping for handling map<spg_t, ...>, similar to 1618a02a946dSIlya Dryomov * ceph_pg_mapping. Used to track OSD backoffs -- a backoff [range] is 1619a02a946dSIlya Dryomov * defined only within a specific spgid; it does not pass anything to 1620a02a946dSIlya Dryomov * children on split, or to another primary. 1621a02a946dSIlya Dryomov */ 1622a02a946dSIlya Dryomov DEFINE_RB_FUNCS2(spg_mapping, struct ceph_spg_mapping, spgid, ceph_spg_compare, 1623a02a946dSIlya Dryomov RB_BYPTR, const struct ceph_spg *, node) 1624a02a946dSIlya Dryomov 1625a02a946dSIlya Dryomov static u64 hoid_get_bitwise_key(const struct ceph_hobject_id *hoid) 1626a02a946dSIlya Dryomov { 1627a02a946dSIlya Dryomov return hoid->is_max ? 0x100000000ull : hoid->hash_reverse_bits; 1628a02a946dSIlya Dryomov } 1629a02a946dSIlya Dryomov 1630a02a946dSIlya Dryomov static void hoid_get_effective_key(const struct ceph_hobject_id *hoid, 1631a02a946dSIlya Dryomov void **pkey, size_t *pkey_len) 1632a02a946dSIlya Dryomov { 1633a02a946dSIlya Dryomov if (hoid->key_len) { 1634a02a946dSIlya Dryomov *pkey = hoid->key; 1635a02a946dSIlya Dryomov *pkey_len = hoid->key_len; 1636a02a946dSIlya Dryomov } else { 1637a02a946dSIlya Dryomov *pkey = hoid->oid; 1638a02a946dSIlya Dryomov *pkey_len = hoid->oid_len; 1639a02a946dSIlya Dryomov } 1640a02a946dSIlya Dryomov } 1641a02a946dSIlya Dryomov 1642a02a946dSIlya Dryomov static int compare_names(const void *name1, size_t name1_len, 1643a02a946dSIlya Dryomov const void *name2, size_t name2_len) 1644a02a946dSIlya Dryomov { 1645a02a946dSIlya Dryomov int ret; 1646a02a946dSIlya Dryomov 1647a02a946dSIlya Dryomov ret = memcmp(name1, name2, min(name1_len, name2_len)); 1648a02a946dSIlya Dryomov if (!ret) { 1649a02a946dSIlya Dryomov if (name1_len < name2_len) 1650a02a946dSIlya Dryomov ret = -1; 1651a02a946dSIlya Dryomov else if (name1_len > name2_len) 1652a02a946dSIlya Dryomov ret = 1; 1653a02a946dSIlya Dryomov } 1654a02a946dSIlya Dryomov return ret; 1655a02a946dSIlya Dryomov } 1656a02a946dSIlya Dryomov 1657a02a946dSIlya Dryomov static int hoid_compare(const struct ceph_hobject_id *lhs, 1658a02a946dSIlya Dryomov const struct ceph_hobject_id *rhs) 1659a02a946dSIlya Dryomov { 1660a02a946dSIlya Dryomov void *effective_key1, *effective_key2; 1661a02a946dSIlya Dryomov size_t effective_key1_len, effective_key2_len; 1662a02a946dSIlya Dryomov int ret; 1663a02a946dSIlya Dryomov 1664a02a946dSIlya Dryomov if (lhs->is_max < rhs->is_max) 1665a02a946dSIlya Dryomov return -1; 1666a02a946dSIlya Dryomov if (lhs->is_max > rhs->is_max) 1667a02a946dSIlya Dryomov return 1; 1668a02a946dSIlya Dryomov 1669a02a946dSIlya Dryomov if (lhs->pool < rhs->pool) 1670a02a946dSIlya Dryomov return -1; 1671a02a946dSIlya Dryomov if (lhs->pool > rhs->pool) 1672a02a946dSIlya Dryomov return 1; 1673a02a946dSIlya Dryomov 1674a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) < hoid_get_bitwise_key(rhs)) 1675a02a946dSIlya Dryomov return -1; 1676a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) > hoid_get_bitwise_key(rhs)) 1677a02a946dSIlya Dryomov return 1; 1678a02a946dSIlya Dryomov 1679a02a946dSIlya Dryomov ret = compare_names(lhs->nspace, lhs->nspace_len, 1680a02a946dSIlya Dryomov rhs->nspace, rhs->nspace_len); 1681a02a946dSIlya Dryomov if (ret) 1682a02a946dSIlya Dryomov return ret; 1683a02a946dSIlya Dryomov 1684a02a946dSIlya Dryomov hoid_get_effective_key(lhs, &effective_key1, &effective_key1_len); 1685a02a946dSIlya Dryomov hoid_get_effective_key(rhs, &effective_key2, &effective_key2_len); 1686a02a946dSIlya Dryomov ret = compare_names(effective_key1, effective_key1_len, 1687a02a946dSIlya Dryomov effective_key2, effective_key2_len); 1688a02a946dSIlya Dryomov if (ret) 1689a02a946dSIlya Dryomov return ret; 1690a02a946dSIlya Dryomov 1691a02a946dSIlya Dryomov ret = compare_names(lhs->oid, lhs->oid_len, rhs->oid, rhs->oid_len); 1692a02a946dSIlya Dryomov if (ret) 1693a02a946dSIlya Dryomov return ret; 1694a02a946dSIlya Dryomov 1695a02a946dSIlya Dryomov if (lhs->snapid < rhs->snapid) 1696a02a946dSIlya Dryomov return -1; 1697a02a946dSIlya Dryomov if (lhs->snapid > rhs->snapid) 1698a02a946dSIlya Dryomov return 1; 1699a02a946dSIlya Dryomov 1700a02a946dSIlya Dryomov return 0; 1701a02a946dSIlya Dryomov } 1702a02a946dSIlya Dryomov 1703a02a946dSIlya Dryomov /* 1704a02a946dSIlya Dryomov * For decoding ->begin and ->end of MOSDBackoff only -- no MIN/MAX 1705a02a946dSIlya Dryomov * compat stuff here. 1706a02a946dSIlya Dryomov * 1707a02a946dSIlya Dryomov * Assumes @hoid is zero-initialized. 1708a02a946dSIlya Dryomov */ 1709a02a946dSIlya Dryomov static int decode_hoid(void **p, void *end, struct ceph_hobject_id *hoid) 1710a02a946dSIlya Dryomov { 1711a02a946dSIlya Dryomov u8 struct_v; 1712a02a946dSIlya Dryomov u32 struct_len; 1713a02a946dSIlya Dryomov int ret; 1714a02a946dSIlya Dryomov 1715a02a946dSIlya Dryomov ret = ceph_start_decoding(p, end, 4, "hobject_t", &struct_v, 1716a02a946dSIlya Dryomov &struct_len); 1717a02a946dSIlya Dryomov if (ret) 1718a02a946dSIlya Dryomov return ret; 1719a02a946dSIlya Dryomov 1720a02a946dSIlya Dryomov if (struct_v < 4) { 1721a02a946dSIlya Dryomov pr_err("got struct_v %d < 4 of hobject_t\n", struct_v); 1722a02a946dSIlya Dryomov goto e_inval; 1723a02a946dSIlya Dryomov } 1724a02a946dSIlya Dryomov 1725a02a946dSIlya Dryomov hoid->key = ceph_extract_encoded_string(p, end, &hoid->key_len, 1726a02a946dSIlya Dryomov GFP_NOIO); 1727a02a946dSIlya Dryomov if (IS_ERR(hoid->key)) { 1728a02a946dSIlya Dryomov ret = PTR_ERR(hoid->key); 1729a02a946dSIlya Dryomov hoid->key = NULL; 1730a02a946dSIlya Dryomov return ret; 1731a02a946dSIlya Dryomov } 1732a02a946dSIlya Dryomov 1733a02a946dSIlya Dryomov hoid->oid = ceph_extract_encoded_string(p, end, &hoid->oid_len, 1734a02a946dSIlya Dryomov GFP_NOIO); 1735a02a946dSIlya Dryomov if (IS_ERR(hoid->oid)) { 1736a02a946dSIlya Dryomov ret = PTR_ERR(hoid->oid); 1737a02a946dSIlya Dryomov hoid->oid = NULL; 1738a02a946dSIlya Dryomov return ret; 1739a02a946dSIlya Dryomov } 1740a02a946dSIlya Dryomov 1741a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->snapid, e_inval); 1742a02a946dSIlya Dryomov ceph_decode_32_safe(p, end, hoid->hash, e_inval); 1743a02a946dSIlya Dryomov ceph_decode_8_safe(p, end, hoid->is_max, e_inval); 1744a02a946dSIlya Dryomov 1745a02a946dSIlya Dryomov hoid->nspace = ceph_extract_encoded_string(p, end, &hoid->nspace_len, 1746a02a946dSIlya Dryomov GFP_NOIO); 1747a02a946dSIlya Dryomov if (IS_ERR(hoid->nspace)) { 1748a02a946dSIlya Dryomov ret = PTR_ERR(hoid->nspace); 1749a02a946dSIlya Dryomov hoid->nspace = NULL; 1750a02a946dSIlya Dryomov return ret; 1751a02a946dSIlya Dryomov } 1752a02a946dSIlya Dryomov 1753a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->pool, e_inval); 1754a02a946dSIlya Dryomov 1755a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1756a02a946dSIlya Dryomov return 0; 1757a02a946dSIlya Dryomov 1758a02a946dSIlya Dryomov e_inval: 1759a02a946dSIlya Dryomov return -EINVAL; 1760a02a946dSIlya Dryomov } 1761a02a946dSIlya Dryomov 1762a02a946dSIlya Dryomov static int hoid_encoding_size(const struct ceph_hobject_id *hoid) 1763a02a946dSIlya Dryomov { 1764a02a946dSIlya Dryomov return 8 + 4 + 1 + 8 + /* snapid, hash, is_max, pool */ 1765a02a946dSIlya Dryomov 4 + hoid->key_len + 4 + hoid->oid_len + 4 + hoid->nspace_len; 1766a02a946dSIlya Dryomov } 1767a02a946dSIlya Dryomov 1768a02a946dSIlya Dryomov static void encode_hoid(void **p, void *end, const struct ceph_hobject_id *hoid) 1769a02a946dSIlya Dryomov { 1770a02a946dSIlya Dryomov ceph_start_encoding(p, 4, 3, hoid_encoding_size(hoid)); 1771a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->key, hoid->key_len); 1772a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->oid, hoid->oid_len); 1773a02a946dSIlya Dryomov ceph_encode_64(p, hoid->snapid); 1774a02a946dSIlya Dryomov ceph_encode_32(p, hoid->hash); 1775a02a946dSIlya Dryomov ceph_encode_8(p, hoid->is_max); 1776a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->nspace, hoid->nspace_len); 1777a02a946dSIlya Dryomov ceph_encode_64(p, hoid->pool); 1778a02a946dSIlya Dryomov } 1779a02a946dSIlya Dryomov 1780a02a946dSIlya Dryomov static void free_hoid(struct ceph_hobject_id *hoid) 1781a02a946dSIlya Dryomov { 1782a02a946dSIlya Dryomov if (hoid) { 1783a02a946dSIlya Dryomov kfree(hoid->key); 1784a02a946dSIlya Dryomov kfree(hoid->oid); 1785a02a946dSIlya Dryomov kfree(hoid->nspace); 1786a02a946dSIlya Dryomov kfree(hoid); 1787a02a946dSIlya Dryomov } 1788a02a946dSIlya Dryomov } 1789a02a946dSIlya Dryomov 1790a02a946dSIlya Dryomov static struct ceph_osd_backoff *alloc_backoff(void) 1791a02a946dSIlya Dryomov { 1792a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1793a02a946dSIlya Dryomov 1794a02a946dSIlya Dryomov backoff = kzalloc(sizeof(*backoff), GFP_NOIO); 1795a02a946dSIlya Dryomov if (!backoff) 1796a02a946dSIlya Dryomov return NULL; 1797a02a946dSIlya Dryomov 1798a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->spg_node); 1799a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->id_node); 1800a02a946dSIlya Dryomov return backoff; 1801a02a946dSIlya Dryomov } 1802a02a946dSIlya Dryomov 1803a02a946dSIlya Dryomov static void free_backoff(struct ceph_osd_backoff *backoff) 1804a02a946dSIlya Dryomov { 1805a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->spg_node)); 1806a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->id_node)); 1807a02a946dSIlya Dryomov 1808a02a946dSIlya Dryomov free_hoid(backoff->begin); 1809a02a946dSIlya Dryomov free_hoid(backoff->end); 1810a02a946dSIlya Dryomov kfree(backoff); 1811a02a946dSIlya Dryomov } 1812a02a946dSIlya Dryomov 1813a02a946dSIlya Dryomov /* 1814a02a946dSIlya Dryomov * Within a specific spgid, backoffs are managed by ->begin hoid. 1815a02a946dSIlya Dryomov */ 1816a02a946dSIlya Dryomov DEFINE_RB_INSDEL_FUNCS2(backoff, struct ceph_osd_backoff, begin, hoid_compare, 1817a02a946dSIlya Dryomov RB_BYVAL, spg_node); 1818a02a946dSIlya Dryomov 1819a02a946dSIlya Dryomov static struct ceph_osd_backoff *lookup_containing_backoff(struct rb_root *root, 1820a02a946dSIlya Dryomov const struct ceph_hobject_id *hoid) 1821a02a946dSIlya Dryomov { 1822a02a946dSIlya Dryomov struct rb_node *n = root->rb_node; 1823a02a946dSIlya Dryomov 1824a02a946dSIlya Dryomov while (n) { 1825a02a946dSIlya Dryomov struct ceph_osd_backoff *cur = 1826a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_backoff, spg_node); 1827a02a946dSIlya Dryomov int cmp; 1828a02a946dSIlya Dryomov 1829a02a946dSIlya Dryomov cmp = hoid_compare(hoid, cur->begin); 1830a02a946dSIlya Dryomov if (cmp < 0) { 1831a02a946dSIlya Dryomov n = n->rb_left; 1832a02a946dSIlya Dryomov } else if (cmp > 0) { 1833a02a946dSIlya Dryomov if (hoid_compare(hoid, cur->end) < 0) 1834a02a946dSIlya Dryomov return cur; 1835a02a946dSIlya Dryomov 1836a02a946dSIlya Dryomov n = n->rb_right; 1837a02a946dSIlya Dryomov } else { 1838a02a946dSIlya Dryomov return cur; 1839a02a946dSIlya Dryomov } 1840a02a946dSIlya Dryomov } 1841a02a946dSIlya Dryomov 1842a02a946dSIlya Dryomov return NULL; 1843a02a946dSIlya Dryomov } 1844a02a946dSIlya Dryomov 1845a02a946dSIlya Dryomov /* 1846a02a946dSIlya Dryomov * Each backoff has a unique id within its OSD session. 1847a02a946dSIlya Dryomov */ 1848a02a946dSIlya Dryomov DEFINE_RB_FUNCS(backoff_by_id, struct ceph_osd_backoff, id, id_node) 1849a02a946dSIlya Dryomov 1850a02a946dSIlya Dryomov static void clear_backoffs(struct ceph_osd *osd) 1851a02a946dSIlya Dryomov { 1852a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&osd->o_backoff_mappings)) { 1853a02a946dSIlya Dryomov struct ceph_spg_mapping *spg = 1854a02a946dSIlya Dryomov rb_entry(rb_first(&osd->o_backoff_mappings), 1855a02a946dSIlya Dryomov struct ceph_spg_mapping, node); 1856a02a946dSIlya Dryomov 1857a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&spg->backoffs)) { 1858a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff = 1859a02a946dSIlya Dryomov rb_entry(rb_first(&spg->backoffs), 1860a02a946dSIlya Dryomov struct ceph_osd_backoff, spg_node); 1861a02a946dSIlya Dryomov 1862a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 1863a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 1864a02a946dSIlya Dryomov free_backoff(backoff); 1865a02a946dSIlya Dryomov } 1866a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 1867a02a946dSIlya Dryomov free_spg_mapping(spg); 1868a02a946dSIlya Dryomov } 1869a02a946dSIlya Dryomov } 1870a02a946dSIlya Dryomov 1871a02a946dSIlya Dryomov /* 1872a02a946dSIlya Dryomov * Set up a temporary, non-owning view into @t. 1873a02a946dSIlya Dryomov */ 1874a02a946dSIlya Dryomov static void hoid_fill_from_target(struct ceph_hobject_id *hoid, 1875a02a946dSIlya Dryomov const struct ceph_osd_request_target *t) 1876a02a946dSIlya Dryomov { 1877a02a946dSIlya Dryomov hoid->key = NULL; 1878a02a946dSIlya Dryomov hoid->key_len = 0; 1879a02a946dSIlya Dryomov hoid->oid = t->target_oid.name; 1880a02a946dSIlya Dryomov hoid->oid_len = t->target_oid.name_len; 1881a02a946dSIlya Dryomov hoid->snapid = CEPH_NOSNAP; 1882a02a946dSIlya Dryomov hoid->hash = t->pgid.seed; 1883a02a946dSIlya Dryomov hoid->is_max = false; 1884a02a946dSIlya Dryomov if (t->target_oloc.pool_ns) { 1885a02a946dSIlya Dryomov hoid->nspace = t->target_oloc.pool_ns->str; 1886a02a946dSIlya Dryomov hoid->nspace_len = t->target_oloc.pool_ns->len; 1887a02a946dSIlya Dryomov } else { 1888a02a946dSIlya Dryomov hoid->nspace = NULL; 1889a02a946dSIlya Dryomov hoid->nspace_len = 0; 1890a02a946dSIlya Dryomov } 1891a02a946dSIlya Dryomov hoid->pool = t->target_oloc.pool; 1892a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1893a02a946dSIlya Dryomov } 1894a02a946dSIlya Dryomov 1895a02a946dSIlya Dryomov static bool should_plug_request(struct ceph_osd_request *req) 1896a02a946dSIlya Dryomov { 1897a02a946dSIlya Dryomov struct ceph_osd *osd = req->r_osd; 1898a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1899a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1900a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 1901a02a946dSIlya Dryomov 1902a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &req->r_t.spgid); 1903a02a946dSIlya Dryomov if (!spg) 1904a02a946dSIlya Dryomov return false; 1905a02a946dSIlya Dryomov 1906a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, &req->r_t); 1907a02a946dSIlya Dryomov backoff = lookup_containing_backoff(&spg->backoffs, &hoid); 1908a02a946dSIlya Dryomov if (!backoff) 1909a02a946dSIlya Dryomov return false; 1910a02a946dSIlya Dryomov 1911a02a946dSIlya Dryomov dout("%s req %p tid %llu backoff osd%d spgid %llu.%xs%d id %llu\n", 1912a02a946dSIlya Dryomov __func__, req, req->r_tid, osd->o_osd, backoff->spgid.pgid.pool, 1913a02a946dSIlya Dryomov backoff->spgid.pgid.seed, backoff->spgid.shard, backoff->id); 1914a02a946dSIlya Dryomov return true; 1915a02a946dSIlya Dryomov } 1916a02a946dSIlya Dryomov 19170d9c1ab3SIlya Dryomov /* 19180d9c1ab3SIlya Dryomov * Keep get_num_data_items() in sync with this function. 19190d9c1ab3SIlya Dryomov */ 1920bb873b53SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req, 1921bb873b53SIlya Dryomov struct ceph_msg *msg) 19223d14c5d2SYehuda Sadeh { 1923bb873b53SIlya Dryomov u32 data_len = 0; 1924bb873b53SIlya Dryomov int i; 19253d14c5d2SYehuda Sadeh 19260d9c1ab3SIlya Dryomov if (msg->num_data_items) 1927bb873b53SIlya Dryomov return; 19283d14c5d2SYehuda Sadeh 1929bb873b53SIlya Dryomov WARN_ON(msg->data_length); 1930bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1931bb873b53SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[i]; 1932bb873b53SIlya Dryomov 1933bb873b53SIlya Dryomov switch (op->op) { 1934bb873b53SIlya Dryomov /* request */ 1935bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 1936bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 1937bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 1938bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->extent.osd_data); 1939bb873b53SIlya Dryomov break; 1940bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 1941bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 1942bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 1943bb873b53SIlya Dryomov op->xattr.value_len); 1944bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->xattr.osd_data); 1945bb873b53SIlya Dryomov break; 1946922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 1947922dab61SIlya Dryomov ceph_osdc_msg_data_add(msg, 1948922dab61SIlya Dryomov &op->notify_ack.request_data); 1949922dab61SIlya Dryomov break; 1950bb873b53SIlya Dryomov 1951bb873b53SIlya Dryomov /* reply */ 1952bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 1953bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1954bb873b53SIlya Dryomov &op->raw_data_in); 1955bb873b53SIlya Dryomov break; 1956bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 1957bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1958bb873b53SIlya Dryomov &op->extent.osd_data); 1959bb873b53SIlya Dryomov break; 1960a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 1961a4ed38d7SDouglas Fuller ceph_osdc_msg_data_add(req->r_reply, 1962a4ed38d7SDouglas Fuller &op->list_watchers.response_data); 1963a4ed38d7SDouglas Fuller break; 1964bb873b53SIlya Dryomov 1965bb873b53SIlya Dryomov /* both */ 1966bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 1967bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 1968bb873b53SIlya Dryomov op->cls.method_len + 1969bb873b53SIlya Dryomov op->cls.indata_len); 1970bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_info); 1971bb873b53SIlya Dryomov /* optional, can be NONE */ 1972bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_data); 1973bb873b53SIlya Dryomov /* optional, can be NONE */ 1974bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1975bb873b53SIlya Dryomov &op->cls.response_data); 1976bb873b53SIlya Dryomov break; 197719079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 197819079203SIlya Dryomov ceph_osdc_msg_data_add(msg, 197919079203SIlya Dryomov &op->notify.request_data); 198019079203SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 198119079203SIlya Dryomov &op->notify.response_data); 198219079203SIlya Dryomov break; 1983bb873b53SIlya Dryomov } 1984bb873b53SIlya Dryomov 1985bb873b53SIlya Dryomov data_len += op->indata_len; 1986bb873b53SIlya Dryomov } 1987bb873b53SIlya Dryomov 1988bb873b53SIlya Dryomov WARN_ON(data_len != msg->data_length); 1989bb873b53SIlya Dryomov } 1990bb873b53SIlya Dryomov 19912e59ffd1SIlya Dryomov static void encode_pgid(void **p, const struct ceph_pg *pgid) 19922e59ffd1SIlya Dryomov { 19932e59ffd1SIlya Dryomov ceph_encode_8(p, 1); 19942e59ffd1SIlya Dryomov ceph_encode_64(p, pgid->pool); 19952e59ffd1SIlya Dryomov ceph_encode_32(p, pgid->seed); 19962e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 19972e59ffd1SIlya Dryomov } 19982e59ffd1SIlya Dryomov 19998cb441c0SIlya Dryomov static void encode_spgid(void **p, const struct ceph_spg *spgid) 20008cb441c0SIlya Dryomov { 20018cb441c0SIlya Dryomov ceph_start_encoding(p, 1, 1, CEPH_PGID_ENCODING_LEN + 1); 20028cb441c0SIlya Dryomov encode_pgid(p, &spgid->pgid); 20038cb441c0SIlya Dryomov ceph_encode_8(p, spgid->shard); 20048cb441c0SIlya Dryomov } 20058cb441c0SIlya Dryomov 20062e59ffd1SIlya Dryomov static void encode_oloc(void **p, void *end, 20072e59ffd1SIlya Dryomov const struct ceph_object_locator *oloc) 20082e59ffd1SIlya Dryomov { 20092e59ffd1SIlya Dryomov ceph_start_encoding(p, 5, 4, ceph_oloc_encoding_size(oloc)); 20102e59ffd1SIlya Dryomov ceph_encode_64(p, oloc->pool); 20112e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 20122e59ffd1SIlya Dryomov ceph_encode_32(p, 0); /* key len */ 20132e59ffd1SIlya Dryomov if (oloc->pool_ns) 20142e59ffd1SIlya Dryomov ceph_encode_string(p, end, oloc->pool_ns->str, 20152e59ffd1SIlya Dryomov oloc->pool_ns->len); 20162e59ffd1SIlya Dryomov else 20172e59ffd1SIlya Dryomov ceph_encode_32(p, 0); 20182e59ffd1SIlya Dryomov } 20192e59ffd1SIlya Dryomov 20208cb441c0SIlya Dryomov static void encode_request_partial(struct ceph_osd_request *req, 20218cb441c0SIlya Dryomov struct ceph_msg *msg) 2022bb873b53SIlya Dryomov { 2023bb873b53SIlya Dryomov void *p = msg->front.iov_base; 2024bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 2025bb873b53SIlya Dryomov u32 data_len = 0; 2026bb873b53SIlya Dryomov int i; 2027bb873b53SIlya Dryomov 2028bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 2029bb873b53SIlya Dryomov /* snapshots aren't writeable */ 2030bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 2031bb873b53SIlya Dryomov } else { 2032bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 2033bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 2034bb873b53SIlya Dryomov } 2035bb873b53SIlya Dryomov 2036bb873b53SIlya Dryomov setup_request_data(req, msg); 2037bb873b53SIlya Dryomov 20388cb441c0SIlya Dryomov encode_spgid(&p, &req->r_t.spgid); /* actual spg */ 20398cb441c0SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); /* raw hash */ 2040bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 2041bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 20428cb441c0SIlya Dryomov 20438cb441c0SIlya Dryomov /* reqid */ 20448cb441c0SIlya Dryomov ceph_start_encoding(&p, 2, 2, sizeof(struct ceph_osd_reqid)); 20458cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_osd_reqid)); 20468cb441c0SIlya Dryomov p += sizeof(struct ceph_osd_reqid); 20478cb441c0SIlya Dryomov 20488cb441c0SIlya Dryomov /* trace */ 20498cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_blkin_trace_info)); 20508cb441c0SIlya Dryomov p += sizeof(struct ceph_blkin_trace_info); 20518cb441c0SIlya Dryomov 20528cb441c0SIlya Dryomov ceph_encode_32(&p, 0); /* client_inc, always 0 */ 2053fac02ddfSArnd Bergmann ceph_encode_timespec64(p, &req->r_mtime); 2054bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 2055aa26d662SJeff Layton 20562e59ffd1SIlya Dryomov encode_oloc(&p, end, &req->r_t.target_oloc); 20572e59ffd1SIlya Dryomov ceph_encode_string(&p, end, req->r_t.target_oid.name, 20582e59ffd1SIlya Dryomov req->r_t.target_oid.name_len); 2059bb873b53SIlya Dryomov 2060bb873b53SIlya Dryomov /* ops, can imply data */ 2061bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 2062bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 2063bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 2064bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 2065bb873b53SIlya Dryomov } 2066bb873b53SIlya Dryomov 2067bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 2068bb873b53SIlya Dryomov if (req->r_snapc) { 2069bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 2070bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 2071bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 2072bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 2073bb873b53SIlya Dryomov } else { 2074bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 2075bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 2076bb873b53SIlya Dryomov } 2077bb873b53SIlya Dryomov 2078bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 2079986e8989SIlya Dryomov BUG_ON(p > end - 8); /* space for features */ 2080bb873b53SIlya Dryomov 20818cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(8); /* MOSDOp v8 */ 20828cb441c0SIlya Dryomov /* front_len is finalized in encode_request_finish() */ 2083986e8989SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 2084986e8989SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 2085bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 2086bb873b53SIlya Dryomov /* 2087bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 2088bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 2089bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 2090bb873b53SIlya Dryomov */ 2091bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 2092bb873b53SIlya Dryomov 20938cb441c0SIlya Dryomov dout("%s req %p msg %p oid %s oid_len %d\n", __func__, req, msg, 20948cb441c0SIlya Dryomov req->r_t.target_oid.name, req->r_t.target_oid.name_len); 20958cb441c0SIlya Dryomov } 20968cb441c0SIlya Dryomov 20978cb441c0SIlya Dryomov static void encode_request_finish(struct ceph_msg *msg) 20988cb441c0SIlya Dryomov { 20998cb441c0SIlya Dryomov void *p = msg->front.iov_base; 2100986e8989SIlya Dryomov void *const partial_end = p + msg->front.iov_len; 21018cb441c0SIlya Dryomov void *const end = p + msg->front_alloc_len; 21028cb441c0SIlya Dryomov 21038cb441c0SIlya Dryomov if (CEPH_HAVE_FEATURE(msg->con->peer_features, RESEND_ON_SPLIT)) { 21048cb441c0SIlya Dryomov /* luminous OSD -- encode features and be done */ 2105986e8989SIlya Dryomov p = partial_end; 21068cb441c0SIlya Dryomov ceph_encode_64(&p, msg->con->peer_features); 21078cb441c0SIlya Dryomov } else { 21088cb441c0SIlya Dryomov struct { 21098cb441c0SIlya Dryomov char spgid[CEPH_ENCODING_START_BLK_LEN + 21108cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1]; 21118cb441c0SIlya Dryomov __le32 hash; 21128cb441c0SIlya Dryomov __le32 epoch; 21138cb441c0SIlya Dryomov __le32 flags; 21148cb441c0SIlya Dryomov char reqid[CEPH_ENCODING_START_BLK_LEN + 21158cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid)]; 21168cb441c0SIlya Dryomov char trace[sizeof(struct ceph_blkin_trace_info)]; 21178cb441c0SIlya Dryomov __le32 client_inc; 21188cb441c0SIlya Dryomov struct ceph_timespec mtime; 21198cb441c0SIlya Dryomov } __packed head; 21208cb441c0SIlya Dryomov struct ceph_pg pgid; 21218cb441c0SIlya Dryomov void *oloc, *oid, *tail; 21228cb441c0SIlya Dryomov int oloc_len, oid_len, tail_len; 21238cb441c0SIlya Dryomov int len; 21248cb441c0SIlya Dryomov 21258cb441c0SIlya Dryomov /* 21268cb441c0SIlya Dryomov * Pre-luminous OSD -- reencode v8 into v4 using @head 21278cb441c0SIlya Dryomov * as a temporary buffer. Encode the raw PG; the rest 21288cb441c0SIlya Dryomov * is just a matter of moving oloc, oid and tail blobs 21298cb441c0SIlya Dryomov * around. 21308cb441c0SIlya Dryomov */ 21318cb441c0SIlya Dryomov memcpy(&head, p, sizeof(head)); 21328cb441c0SIlya Dryomov p += sizeof(head); 21338cb441c0SIlya Dryomov 21348cb441c0SIlya Dryomov oloc = p; 21358cb441c0SIlya Dryomov p += CEPH_ENCODING_START_BLK_LEN; 21368cb441c0SIlya Dryomov pgid.pool = ceph_decode_64(&p); 21378cb441c0SIlya Dryomov p += 4 + 4; /* preferred, key len */ 21388cb441c0SIlya Dryomov len = ceph_decode_32(&p); 21398cb441c0SIlya Dryomov p += len; /* nspace */ 21408cb441c0SIlya Dryomov oloc_len = p - oloc; 21418cb441c0SIlya Dryomov 21428cb441c0SIlya Dryomov oid = p; 21438cb441c0SIlya Dryomov len = ceph_decode_32(&p); 21448cb441c0SIlya Dryomov p += len; 21458cb441c0SIlya Dryomov oid_len = p - oid; 21468cb441c0SIlya Dryomov 21478cb441c0SIlya Dryomov tail = p; 2148986e8989SIlya Dryomov tail_len = partial_end - p; 21498cb441c0SIlya Dryomov 21508cb441c0SIlya Dryomov p = msg->front.iov_base; 21518cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.client_inc, sizeof(head.client_inc)); 21528cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.epoch, sizeof(head.epoch)); 21538cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.flags, sizeof(head.flags)); 21548cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.mtime, sizeof(head.mtime)); 21558cb441c0SIlya Dryomov 21568cb441c0SIlya Dryomov /* reassert_version */ 21578cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_eversion)); 21588cb441c0SIlya Dryomov p += sizeof(struct ceph_eversion); 21598cb441c0SIlya Dryomov 21608cb441c0SIlya Dryomov BUG_ON(p >= oloc); 21618cb441c0SIlya Dryomov memmove(p, oloc, oloc_len); 21628cb441c0SIlya Dryomov p += oloc_len; 21638cb441c0SIlya Dryomov 21648cb441c0SIlya Dryomov pgid.seed = le32_to_cpu(head.hash); 21658cb441c0SIlya Dryomov encode_pgid(&p, &pgid); /* raw pg */ 21668cb441c0SIlya Dryomov 21678cb441c0SIlya Dryomov BUG_ON(p >= oid); 21688cb441c0SIlya Dryomov memmove(p, oid, oid_len); 21698cb441c0SIlya Dryomov p += oid_len; 21708cb441c0SIlya Dryomov 21718cb441c0SIlya Dryomov /* tail -- ops, snapid, snapc, retry_attempt */ 21728cb441c0SIlya Dryomov BUG_ON(p >= tail); 21738cb441c0SIlya Dryomov memmove(p, tail, tail_len); 21748cb441c0SIlya Dryomov p += tail_len; 21758cb441c0SIlya Dryomov 21768cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 21778cb441c0SIlya Dryomov } 21788cb441c0SIlya Dryomov 21798cb441c0SIlya Dryomov BUG_ON(p > end); 21808cb441c0SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 21818cb441c0SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 21828cb441c0SIlya Dryomov 21838cb441c0SIlya Dryomov dout("%s msg %p tid %llu %u+%u+%u v%d\n", __func__, msg, 21848cb441c0SIlya Dryomov le64_to_cpu(msg->hdr.tid), le32_to_cpu(msg->hdr.front_len), 21858cb441c0SIlya Dryomov le32_to_cpu(msg->hdr.middle_len), le32_to_cpu(msg->hdr.data_len), 21868cb441c0SIlya Dryomov le16_to_cpu(msg->hdr.version)); 2187bb873b53SIlya Dryomov } 2188bb873b53SIlya Dryomov 2189bb873b53SIlya Dryomov /* 2190bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 2191bb873b53SIlya Dryomov */ 2192bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 2193bb873b53SIlya Dryomov { 2194bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 2195bb873b53SIlya Dryomov 21965aea3dcdSIlya Dryomov verify_osd_locked(osd); 2197bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 2198bb873b53SIlya Dryomov 2199a02a946dSIlya Dryomov /* backoff? */ 2200a02a946dSIlya Dryomov if (should_plug_request(req)) 2201a02a946dSIlya Dryomov return; 2202a02a946dSIlya Dryomov 22035aea3dcdSIlya Dryomov /* 22045aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 22055aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 22065aea3dcdSIlya Dryomov */ 22075aea3dcdSIlya Dryomov if (req->r_sent) 22085aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 22095aea3dcdSIlya Dryomov 2210bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 2211bb873b53SIlya Dryomov if (req->r_attempts) 2212bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 2213bb873b53SIlya Dryomov else 2214bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 2215bb873b53SIlya Dryomov 22168cb441c0SIlya Dryomov encode_request_partial(req, req->r_request); 2217bb873b53SIlya Dryomov 221804c7d789SIlya 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", 2219bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 2220dc98ff72SIlya Dryomov req->r_t.spgid.pgid.pool, req->r_t.spgid.pgid.seed, 222104c7d789SIlya Dryomov req->r_t.spgid.shard, osd->o_osd, req->r_t.epoch, req->r_flags, 222204c7d789SIlya Dryomov req->r_attempts); 2223bb873b53SIlya Dryomov 2224bb873b53SIlya Dryomov req->r_t.paused = false; 22253d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 2226bb873b53SIlya Dryomov req->r_attempts++; 22273d14c5d2SYehuda Sadeh 2228bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 2229bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 2230bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 22313d14c5d2SYehuda Sadeh } 22323d14c5d2SYehuda Sadeh 223342c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 223442c1b124SIlya Dryomov { 223542c1b124SIlya Dryomov bool continuous = false; 223642c1b124SIlya Dryomov 22375aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 223842c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 223942c1b124SIlya Dryomov 2240b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2241b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || 2242b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 224342c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 224442c1b124SIlya Dryomov continuous = true; 224542c1b124SIlya Dryomov } else { 224642c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 224742c1b124SIlya Dryomov } 224842c1b124SIlya Dryomov 224942c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 225042c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 225142c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 225242c1b124SIlya Dryomov } 225342c1b124SIlya Dryomov 2254a1f4020aSJeff Layton static void complete_request(struct ceph_osd_request *req, int err); 22554609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req); 22564609245eSIlya Dryomov 22575aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 22580bbfdfe8SIlya Dryomov { 22595aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 22605aea3dcdSIlya Dryomov struct ceph_osd *osd; 22614609245eSIlya Dryomov enum calc_target_result ct_res; 226266850df5SIlya Dryomov int err = 0; 22635aea3dcdSIlya Dryomov bool need_send = false; 22645aea3dcdSIlya Dryomov bool promoted = false; 22650bbfdfe8SIlya Dryomov 2266b18b9550SIlya Dryomov WARN_ON(req->r_tid); 22675aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 22685aea3dcdSIlya Dryomov 22695aea3dcdSIlya Dryomov again: 22707de030d6SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, NULL, false); 22714609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) 22724609245eSIlya Dryomov goto promote; 22734609245eSIlya Dryomov 22745aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 22755aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 22765aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 22775aea3dcdSIlya Dryomov goto promote; 22785aea3dcdSIlya Dryomov } 22795aea3dcdSIlya Dryomov 228066850df5SIlya Dryomov if (osdc->abort_err) { 228166850df5SIlya Dryomov dout("req %p abort_err %d\n", req, osdc->abort_err); 228266850df5SIlya Dryomov err = osdc->abort_err; 228366850df5SIlya Dryomov } else if (osdc->osdmap->epoch < osdc->epoch_barrier) { 228458eb7932SJeff Layton dout("req %p epoch %u barrier %u\n", req, osdc->osdmap->epoch, 228558eb7932SJeff Layton osdc->epoch_barrier); 228658eb7932SJeff Layton req->r_t.paused = true; 228758eb7932SJeff Layton maybe_request_map(osdc); 228858eb7932SJeff Layton } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 2289b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 22905aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 22915aea3dcdSIlya Dryomov req->r_t.paused = true; 22925aea3dcdSIlya Dryomov maybe_request_map(osdc); 22935aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 2294b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 22955aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 22965aea3dcdSIlya Dryomov req->r_t.paused = true; 22975aea3dcdSIlya Dryomov maybe_request_map(osdc); 22985aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 22995aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 23005aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 2301b7ec35b3SIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 23025aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 23035aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 2304c843d13cSIlya Dryomov if (osdc->abort_on_full) { 230529e87820SIlya Dryomov err = -ENOSPC; 230629e87820SIlya Dryomov } else { 23075aea3dcdSIlya Dryomov pr_warn_ratelimited("FULL or reached pool quota\n"); 23085aea3dcdSIlya Dryomov req->r_t.paused = true; 23095aea3dcdSIlya Dryomov maybe_request_map(osdc); 231029e87820SIlya Dryomov } 23115aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 23125aea3dcdSIlya Dryomov need_send = true; 23130bbfdfe8SIlya Dryomov } else { 23145aea3dcdSIlya Dryomov maybe_request_map(osdc); 23150bbfdfe8SIlya Dryomov } 23160bbfdfe8SIlya Dryomov 23175aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 23185aea3dcdSIlya Dryomov /* 23195aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 23205aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 23215aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 23225aea3dcdSIlya Dryomov */ 23235aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 23245aea3dcdSIlya Dryomov link_request(osd, req); 23255aea3dcdSIlya Dryomov if (need_send) 23265aea3dcdSIlya Dryomov send_request(req); 232766850df5SIlya Dryomov else if (err) 232866850df5SIlya Dryomov complete_request(req, err); 23295aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 23305aea3dcdSIlya Dryomov 23316001567cSIlya Dryomov if (!err && ct_res == CALC_TARGET_POOL_DNE) 23324609245eSIlya Dryomov send_map_check(req); 23334609245eSIlya Dryomov 23345aea3dcdSIlya Dryomov if (promoted) 23355aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 23365aea3dcdSIlya Dryomov return; 23375aea3dcdSIlya Dryomov 23385aea3dcdSIlya Dryomov promote: 23395aea3dcdSIlya Dryomov up_read(&osdc->lock); 23405aea3dcdSIlya Dryomov down_write(&osdc->lock); 23415aea3dcdSIlya Dryomov wrlocked = true; 23425aea3dcdSIlya Dryomov promoted = true; 23435aea3dcdSIlya Dryomov goto again; 23440bbfdfe8SIlya Dryomov } 23450bbfdfe8SIlya Dryomov 23465aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 23475aea3dcdSIlya Dryomov { 234854ea0046SIlya Dryomov WARN_ON(req->r_flags & (CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK)); 2349b18b9550SIlya Dryomov WARN_ON(!(req->r_flags & (CEPH_OSD_FLAG_READ | CEPH_OSD_FLAG_WRITE))); 23505aea3dcdSIlya Dryomov 2351b18b9550SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ONDISK; 23525aea3dcdSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 23537cc5e38fSIlya Dryomov 23547cc5e38fSIlya Dryomov req->r_start_stamp = jiffies; 23555aea3dcdSIlya Dryomov } 23565aea3dcdSIlya Dryomov 23575aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 23585aea3dcdSIlya Dryomov { 23595aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 23605aea3dcdSIlya Dryomov account_request(req); 23615aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 23625aea3dcdSIlya Dryomov } 23635aea3dcdSIlya Dryomov 236445ee2c1dSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 23655aea3dcdSIlya Dryomov { 23665aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 23675aea3dcdSIlya Dryomov 23684609245eSIlya Dryomov WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); 236904c7d789SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 237004c7d789SIlya Dryomov 237104c7d789SIlya Dryomov if (req->r_osd) 237204c7d789SIlya Dryomov unlink_request(req->r_osd, req); 23735aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 23745aea3dcdSIlya Dryomov 23755aea3dcdSIlya Dryomov /* 23765aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 23775aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 23785aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 23795aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 23805aea3dcdSIlya Dryomov */ 23815aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 23825aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 23835aea3dcdSIlya Dryomov } 23845aea3dcdSIlya Dryomov 2385fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 2386fe5da05eSIlya Dryomov { 2387b18b9550SIlya Dryomov dout("%s req %p tid %llu cb %pf result %d\n", __func__, req, 2388b18b9550SIlya Dryomov req->r_tid, req->r_callback, req->r_result); 238926df726bSIlya Dryomov 239026df726bSIlya Dryomov if (req->r_callback) 2391fe5da05eSIlya Dryomov req->r_callback(req); 239226df726bSIlya Dryomov complete_all(&req->r_completion); 239326df726bSIlya Dryomov ceph_osdc_put_request(req); 2394b18b9550SIlya Dryomov } 2395fe5da05eSIlya Dryomov 239688bc1922SIlya Dryomov static void complete_request_workfn(struct work_struct *work) 239788bc1922SIlya Dryomov { 239888bc1922SIlya Dryomov struct ceph_osd_request *req = 239988bc1922SIlya Dryomov container_of(work, struct ceph_osd_request, r_complete_work); 240088bc1922SIlya Dryomov 240188bc1922SIlya Dryomov __complete_request(req); 24020bbfdfe8SIlya Dryomov } 24030bbfdfe8SIlya Dryomov 24044609245eSIlya Dryomov /* 2405b18b9550SIlya Dryomov * This is open-coded in handle_reply(). 24064609245eSIlya Dryomov */ 24074609245eSIlya Dryomov static void complete_request(struct ceph_osd_request *req, int err) 24084609245eSIlya Dryomov { 24094609245eSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 24104609245eSIlya Dryomov 24114609245eSIlya Dryomov req->r_result = err; 241245ee2c1dSIlya Dryomov finish_request(req); 241388bc1922SIlya Dryomov 241488bc1922SIlya Dryomov INIT_WORK(&req->r_complete_work, complete_request_workfn); 241588bc1922SIlya Dryomov queue_work(req->r_osdc->completion_wq, &req->r_complete_work); 24164609245eSIlya Dryomov } 24174609245eSIlya Dryomov 24184609245eSIlya Dryomov static void cancel_map_check(struct ceph_osd_request *req) 24194609245eSIlya Dryomov { 24204609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 24214609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 24224609245eSIlya Dryomov 24234609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 24244609245eSIlya Dryomov 24254609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 24264609245eSIlya Dryomov if (!lookup_req) 24274609245eSIlya Dryomov return; 24284609245eSIlya Dryomov 24294609245eSIlya Dryomov WARN_ON(lookup_req != req); 24304609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 24314609245eSIlya Dryomov ceph_osdc_put_request(req); 24324609245eSIlya Dryomov } 24334609245eSIlya Dryomov 24345aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 24355aea3dcdSIlya Dryomov { 24365aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 24375aea3dcdSIlya Dryomov 24384609245eSIlya Dryomov cancel_map_check(req); 243945ee2c1dSIlya Dryomov finish_request(req); 2440b18b9550SIlya Dryomov complete_all(&req->r_completion); 2441c297eb42SIlya Dryomov ceph_osdc_put_request(req); 24425aea3dcdSIlya Dryomov } 24435aea3dcdSIlya Dryomov 24447cc5e38fSIlya Dryomov static void abort_request(struct ceph_osd_request *req, int err) 24457cc5e38fSIlya Dryomov { 24467cc5e38fSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 24477cc5e38fSIlya Dryomov 24487cc5e38fSIlya Dryomov cancel_map_check(req); 24497cc5e38fSIlya Dryomov complete_request(req, err); 24507cc5e38fSIlya Dryomov } 24517cc5e38fSIlya Dryomov 245266850df5SIlya Dryomov static int abort_fn(struct ceph_osd_request *req, void *arg) 245366850df5SIlya Dryomov { 245466850df5SIlya Dryomov int err = *(int *)arg; 245566850df5SIlya Dryomov 245666850df5SIlya Dryomov abort_request(req, err); 245766850df5SIlya Dryomov return 0; /* continue iteration */ 245866850df5SIlya Dryomov } 245966850df5SIlya Dryomov 246066850df5SIlya Dryomov /* 246166850df5SIlya Dryomov * Abort all in-flight requests with @err and arrange for all future 246266850df5SIlya Dryomov * requests to be failed immediately. 246366850df5SIlya Dryomov */ 246466850df5SIlya Dryomov void ceph_osdc_abort_requests(struct ceph_osd_client *osdc, int err) 246566850df5SIlya Dryomov { 246666850df5SIlya Dryomov dout("%s osdc %p err %d\n", __func__, osdc, err); 246766850df5SIlya Dryomov down_write(&osdc->lock); 246866850df5SIlya Dryomov for_each_request(osdc, abort_fn, &err); 246966850df5SIlya Dryomov osdc->abort_err = err; 247066850df5SIlya Dryomov up_write(&osdc->lock); 247166850df5SIlya Dryomov } 247266850df5SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_abort_requests); 247366850df5SIlya Dryomov 247458eb7932SJeff Layton static void update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 247558eb7932SJeff Layton { 247658eb7932SJeff Layton if (likely(eb > osdc->epoch_barrier)) { 247758eb7932SJeff Layton dout("updating epoch_barrier from %u to %u\n", 247858eb7932SJeff Layton osdc->epoch_barrier, eb); 247958eb7932SJeff Layton osdc->epoch_barrier = eb; 248058eb7932SJeff Layton /* Request map if we're not to the barrier yet */ 248158eb7932SJeff Layton if (eb > osdc->osdmap->epoch) 248258eb7932SJeff Layton maybe_request_map(osdc); 248358eb7932SJeff Layton } 248458eb7932SJeff Layton } 248558eb7932SJeff Layton 248658eb7932SJeff Layton void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 248758eb7932SJeff Layton { 248858eb7932SJeff Layton down_read(&osdc->lock); 248958eb7932SJeff Layton if (unlikely(eb > osdc->epoch_barrier)) { 249058eb7932SJeff Layton up_read(&osdc->lock); 249158eb7932SJeff Layton down_write(&osdc->lock); 249258eb7932SJeff Layton update_epoch_barrier(osdc, eb); 249358eb7932SJeff Layton up_write(&osdc->lock); 249458eb7932SJeff Layton } else { 249558eb7932SJeff Layton up_read(&osdc->lock); 249658eb7932SJeff Layton } 249758eb7932SJeff Layton } 249858eb7932SJeff Layton EXPORT_SYMBOL(ceph_osdc_update_epoch_barrier); 249958eb7932SJeff Layton 2500fc36d0a4SJeff Layton /* 25014eea0fefSIlya Dryomov * We can end up releasing caps as a result of abort_request(). 25024eea0fefSIlya Dryomov * In that case, we probably want to ensure that the cap release message 25034eea0fefSIlya Dryomov * has an updated epoch barrier in it, so set the epoch barrier prior to 25044eea0fefSIlya Dryomov * aborting the first request. 25054eea0fefSIlya Dryomov */ 25064eea0fefSIlya Dryomov static int abort_on_full_fn(struct ceph_osd_request *req, void *arg) 25074eea0fefSIlya Dryomov { 25084eea0fefSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 25094eea0fefSIlya Dryomov bool *victims = arg; 25104eea0fefSIlya Dryomov 2511c843d13cSIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 25124eea0fefSIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2513690f951dSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 25144eea0fefSIlya Dryomov if (!*victims) { 25154eea0fefSIlya Dryomov update_epoch_barrier(osdc, osdc->osdmap->epoch); 25164eea0fefSIlya Dryomov *victims = true; 25174eea0fefSIlya Dryomov } 25184eea0fefSIlya Dryomov abort_request(req, -ENOSPC); 25194eea0fefSIlya Dryomov } 25204eea0fefSIlya Dryomov 25214eea0fefSIlya Dryomov return 0; /* continue iteration */ 25224eea0fefSIlya Dryomov } 25234eea0fefSIlya Dryomov 25244eea0fefSIlya Dryomov /* 2525fc36d0a4SJeff Layton * Drop all pending requests that are stalled waiting on a full condition to 252658eb7932SJeff Layton * clear, and complete them with ENOSPC as the return code. Set the 252758eb7932SJeff Layton * osdc->epoch_barrier to the latest map epoch that we've seen if any were 252858eb7932SJeff Layton * cancelled. 2529fc36d0a4SJeff Layton */ 2530fc36d0a4SJeff Layton static void ceph_osdc_abort_on_full(struct ceph_osd_client *osdc) 2531fc36d0a4SJeff Layton { 253258eb7932SJeff Layton bool victims = false; 2533fc36d0a4SJeff Layton 2534c843d13cSIlya Dryomov if (osdc->abort_on_full && 2535c843d13cSIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || have_pool_full(osdc))) 25364eea0fefSIlya Dryomov for_each_request(osdc, abort_on_full_fn, &victims); 2537fc36d0a4SJeff Layton } 2538fc36d0a4SJeff Layton 25394609245eSIlya Dryomov static void check_pool_dne(struct ceph_osd_request *req) 25404609245eSIlya Dryomov { 25414609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 25424609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 25434609245eSIlya Dryomov 25444609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 25454609245eSIlya Dryomov WARN_ON(!map->epoch); 25464609245eSIlya Dryomov 25474609245eSIlya Dryomov if (req->r_attempts) { 25484609245eSIlya Dryomov /* 25494609245eSIlya Dryomov * We sent a request earlier, which means that 25504609245eSIlya Dryomov * previously the pool existed, and now it does not 25514609245eSIlya Dryomov * (i.e., it was deleted). 25524609245eSIlya Dryomov */ 25534609245eSIlya Dryomov req->r_map_dne_bound = map->epoch; 25544609245eSIlya Dryomov dout("%s req %p tid %llu pool disappeared\n", __func__, req, 25554609245eSIlya Dryomov req->r_tid); 25564609245eSIlya Dryomov } else { 25574609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, 25584609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, map->epoch); 25594609245eSIlya Dryomov } 25604609245eSIlya Dryomov 25614609245eSIlya Dryomov if (req->r_map_dne_bound) { 25624609245eSIlya Dryomov if (map->epoch >= req->r_map_dne_bound) { 25634609245eSIlya Dryomov /* we had a new enough map */ 25644609245eSIlya Dryomov pr_info_ratelimited("tid %llu pool does not exist\n", 25654609245eSIlya Dryomov req->r_tid); 25664609245eSIlya Dryomov complete_request(req, -ENOENT); 25674609245eSIlya Dryomov } 25684609245eSIlya Dryomov } else { 25694609245eSIlya Dryomov send_map_check(req); 25704609245eSIlya Dryomov } 25714609245eSIlya Dryomov } 25724609245eSIlya Dryomov 25734609245eSIlya Dryomov static void map_check_cb(struct ceph_mon_generic_request *greq) 25744609245eSIlya Dryomov { 25754609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 25764609245eSIlya Dryomov struct ceph_osd_request *req; 25774609245eSIlya Dryomov u64 tid = greq->private_data; 25784609245eSIlya Dryomov 25794609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 25804609245eSIlya Dryomov 25814609245eSIlya Dryomov down_write(&osdc->lock); 25824609245eSIlya Dryomov req = lookup_request_mc(&osdc->map_checks, tid); 25834609245eSIlya Dryomov if (!req) { 25844609245eSIlya Dryomov dout("%s tid %llu dne\n", __func__, tid); 25854609245eSIlya Dryomov goto out_unlock; 25864609245eSIlya Dryomov } 25874609245eSIlya Dryomov 25884609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, 25894609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, greq->u.newest); 25904609245eSIlya Dryomov if (!req->r_map_dne_bound) 25914609245eSIlya Dryomov req->r_map_dne_bound = greq->u.newest; 25924609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 25934609245eSIlya Dryomov check_pool_dne(req); 25944609245eSIlya Dryomov 25954609245eSIlya Dryomov ceph_osdc_put_request(req); 25964609245eSIlya Dryomov out_unlock: 25974609245eSIlya Dryomov up_write(&osdc->lock); 25984609245eSIlya Dryomov } 25994609245eSIlya Dryomov 26004609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req) 26014609245eSIlya Dryomov { 26024609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 26034609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 26044609245eSIlya Dryomov int ret; 26054609245eSIlya Dryomov 26064609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 26074609245eSIlya Dryomov 26084609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 26094609245eSIlya Dryomov if (lookup_req) { 26104609245eSIlya Dryomov WARN_ON(lookup_req != req); 26114609245eSIlya Dryomov return; 26124609245eSIlya Dryomov } 26134609245eSIlya Dryomov 26144609245eSIlya Dryomov ceph_osdc_get_request(req); 26154609245eSIlya Dryomov insert_request_mc(&osdc->map_checks, req); 26164609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 26174609245eSIlya Dryomov map_check_cb, req->r_tid); 26184609245eSIlya Dryomov WARN_ON(ret); 26194609245eSIlya Dryomov } 26204609245eSIlya Dryomov 26210bbfdfe8SIlya Dryomov /* 2622922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 2623922dab61SIlya Dryomov */ 2624922dab61SIlya Dryomov static void linger_release(struct kref *kref) 2625922dab61SIlya Dryomov { 2626922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2627922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 2628922dab61SIlya Dryomov 2629922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 2630922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 2631922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 2632922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 26334609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); 2634922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 2635b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lreq->pending_lworks)); 2636922dab61SIlya Dryomov WARN_ON(lreq->osd); 2637922dab61SIlya Dryomov 2638922dab61SIlya Dryomov if (lreq->reg_req) 2639922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 2640922dab61SIlya Dryomov if (lreq->ping_req) 2641922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 2642922dab61SIlya Dryomov target_destroy(&lreq->t); 2643922dab61SIlya Dryomov kfree(lreq); 2644922dab61SIlya Dryomov } 2645922dab61SIlya Dryomov 2646922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 2647922dab61SIlya Dryomov { 2648922dab61SIlya Dryomov if (lreq) 2649922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 2650922dab61SIlya Dryomov } 2651922dab61SIlya Dryomov 2652922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2653922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 2654922dab61SIlya Dryomov { 2655922dab61SIlya Dryomov kref_get(&lreq->kref); 2656922dab61SIlya Dryomov return lreq; 2657922dab61SIlya Dryomov } 2658922dab61SIlya Dryomov 2659922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2660922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 2661922dab61SIlya Dryomov { 2662922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2663922dab61SIlya Dryomov 2664922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 2665922dab61SIlya Dryomov if (!lreq) 2666922dab61SIlya Dryomov return NULL; 2667922dab61SIlya Dryomov 2668922dab61SIlya Dryomov kref_init(&lreq->kref); 2669922dab61SIlya Dryomov mutex_init(&lreq->lock); 2670922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 2671922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 26724609245eSIlya Dryomov RB_CLEAR_NODE(&lreq->mc_node); 2673922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 2674b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lreq->pending_lworks); 2675922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 267619079203SIlya Dryomov init_completion(&lreq->notify_finish_wait); 2677922dab61SIlya Dryomov 2678922dab61SIlya Dryomov lreq->osdc = osdc; 2679922dab61SIlya Dryomov target_init(&lreq->t); 2680922dab61SIlya Dryomov 2681922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 2682922dab61SIlya Dryomov return lreq; 2683922dab61SIlya Dryomov } 2684922dab61SIlya Dryomov 2685922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 2686922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 26874609245eSIlya Dryomov DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) 2688922dab61SIlya Dryomov 2689922dab61SIlya Dryomov /* 2690922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 2691922dab61SIlya Dryomov * 2692922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 2693922dab61SIlya Dryomov */ 2694922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 2695922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2696922dab61SIlya Dryomov { 2697922dab61SIlya Dryomov verify_osd_locked(osd); 2698922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 2699922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2700922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2701922dab61SIlya Dryomov 2702922dab61SIlya Dryomov if (!osd_homeless(osd)) 2703922dab61SIlya Dryomov __remove_osd_from_lru(osd); 2704922dab61SIlya Dryomov else 2705922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 2706922dab61SIlya Dryomov 2707922dab61SIlya Dryomov get_osd(osd); 2708922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 2709922dab61SIlya Dryomov lreq->osd = osd; 2710922dab61SIlya Dryomov } 2711922dab61SIlya Dryomov 2712922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 2713922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2714922dab61SIlya Dryomov { 2715922dab61SIlya Dryomov verify_osd_locked(osd); 2716922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 2717922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2718922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2719922dab61SIlya Dryomov 2720922dab61SIlya Dryomov lreq->osd = NULL; 2721922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 2722922dab61SIlya Dryomov put_osd(osd); 2723922dab61SIlya Dryomov 2724922dab61SIlya Dryomov if (!osd_homeless(osd)) 2725922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 2726922dab61SIlya Dryomov else 2727922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 2728922dab61SIlya Dryomov } 2729922dab61SIlya Dryomov 2730922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 2731922dab61SIlya Dryomov { 2732922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 2733922dab61SIlya Dryomov 2734922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 2735922dab61SIlya Dryomov } 2736922dab61SIlya Dryomov 2737922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 2738922dab61SIlya Dryomov { 2739922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2740922dab61SIlya Dryomov bool registered; 2741922dab61SIlya Dryomov 2742922dab61SIlya Dryomov down_read(&osdc->lock); 2743922dab61SIlya Dryomov registered = __linger_registered(lreq); 2744922dab61SIlya Dryomov up_read(&osdc->lock); 2745922dab61SIlya Dryomov 2746922dab61SIlya Dryomov return registered; 2747922dab61SIlya Dryomov } 2748922dab61SIlya Dryomov 2749922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 2750922dab61SIlya Dryomov { 2751922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2752922dab61SIlya Dryomov 2753922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2754922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 2755922dab61SIlya Dryomov 2756922dab61SIlya Dryomov linger_get(lreq); 2757922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 2758922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 2759922dab61SIlya Dryomov } 2760922dab61SIlya Dryomov 2761922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 2762922dab61SIlya Dryomov { 2763922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2764922dab61SIlya Dryomov 2765922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2766922dab61SIlya Dryomov 2767922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 2768922dab61SIlya Dryomov linger_put(lreq); 2769922dab61SIlya Dryomov } 2770922dab61SIlya Dryomov 2771922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 2772922dab61SIlya Dryomov { 2773922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2774922dab61SIlya Dryomov 2775922dab61SIlya Dryomov WARN_ON(!req->r_linger); 2776922dab61SIlya Dryomov cancel_request(req); 2777922dab61SIlya Dryomov linger_put(lreq); 2778922dab61SIlya Dryomov } 2779922dab61SIlya Dryomov 2780922dab61SIlya Dryomov struct linger_work { 2781922dab61SIlya Dryomov struct work_struct work; 2782922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2783b07d3c4bSIlya Dryomov struct list_head pending_item; 2784b07d3c4bSIlya Dryomov unsigned long queued_stamp; 2785922dab61SIlya Dryomov 2786922dab61SIlya Dryomov union { 2787922dab61SIlya Dryomov struct { 2788922dab61SIlya Dryomov u64 notify_id; 2789922dab61SIlya Dryomov u64 notifier_id; 2790922dab61SIlya Dryomov void *payload; /* points into @msg front */ 2791922dab61SIlya Dryomov size_t payload_len; 2792922dab61SIlya Dryomov 2793922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 2794922dab61SIlya Dryomov } notify; 2795922dab61SIlya Dryomov struct { 2796922dab61SIlya Dryomov int err; 2797922dab61SIlya Dryomov } error; 2798922dab61SIlya Dryomov }; 2799922dab61SIlya Dryomov }; 2800922dab61SIlya Dryomov 2801922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 2802922dab61SIlya Dryomov work_func_t workfn) 2803922dab61SIlya Dryomov { 2804922dab61SIlya Dryomov struct linger_work *lwork; 2805922dab61SIlya Dryomov 2806922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 2807922dab61SIlya Dryomov if (!lwork) 2808922dab61SIlya Dryomov return NULL; 2809922dab61SIlya Dryomov 2810922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 2811b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lwork->pending_item); 2812922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 2813922dab61SIlya Dryomov 2814922dab61SIlya Dryomov return lwork; 2815922dab61SIlya Dryomov } 2816922dab61SIlya Dryomov 2817922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 2818922dab61SIlya Dryomov { 2819922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2820922dab61SIlya Dryomov 2821b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 2822b07d3c4bSIlya Dryomov list_del(&lwork->pending_item); 2823b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 2824b07d3c4bSIlya Dryomov 2825922dab61SIlya Dryomov linger_put(lreq); 2826922dab61SIlya Dryomov kfree(lwork); 2827922dab61SIlya Dryomov } 2828922dab61SIlya Dryomov 2829922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 2830922dab61SIlya Dryomov { 2831922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2832922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2833922dab61SIlya Dryomov 2834922dab61SIlya Dryomov verify_lreq_locked(lreq); 2835b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lwork->pending_item)); 2836b07d3c4bSIlya Dryomov 2837b07d3c4bSIlya Dryomov lwork->queued_stamp = jiffies; 2838b07d3c4bSIlya Dryomov list_add_tail(&lwork->pending_item, &lreq->pending_lworks); 2839922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 2840922dab61SIlya Dryomov } 2841922dab61SIlya Dryomov 2842922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 2843922dab61SIlya Dryomov { 2844922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2845922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2846922dab61SIlya Dryomov 2847922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2848922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2849922dab61SIlya Dryomov goto out; 2850922dab61SIlya Dryomov } 2851922dab61SIlya Dryomov 285219079203SIlya Dryomov WARN_ON(!lreq->is_watch); 2853922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 2854922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 2855922dab61SIlya Dryomov lwork->notify.payload_len); 2856922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 2857922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 2858922dab61SIlya Dryomov lwork->notify.payload_len); 2859922dab61SIlya Dryomov 2860922dab61SIlya Dryomov out: 2861922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 2862922dab61SIlya Dryomov lwork_free(lwork); 2863922dab61SIlya Dryomov } 2864922dab61SIlya Dryomov 2865922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 2866922dab61SIlya Dryomov { 2867922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2868922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2869922dab61SIlya Dryomov 2870922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2871922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2872922dab61SIlya Dryomov goto out; 2873922dab61SIlya Dryomov } 2874922dab61SIlya Dryomov 2875922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 2876922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 2877922dab61SIlya Dryomov 2878922dab61SIlya Dryomov out: 2879922dab61SIlya Dryomov lwork_free(lwork); 2880922dab61SIlya Dryomov } 2881922dab61SIlya Dryomov 2882922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 2883922dab61SIlya Dryomov { 2884922dab61SIlya Dryomov struct linger_work *lwork; 2885922dab61SIlya Dryomov 2886922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 2887922dab61SIlya Dryomov if (!lwork) { 2888922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 2889922dab61SIlya Dryomov return; 2890922dab61SIlya Dryomov } 2891922dab61SIlya Dryomov 2892922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 2893922dab61SIlya Dryomov lwork_queue(lwork); 2894922dab61SIlya Dryomov } 2895922dab61SIlya Dryomov 2896922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 2897922dab61SIlya Dryomov int result) 2898922dab61SIlya Dryomov { 2899922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 2900922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 2901922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 2902922dab61SIlya Dryomov } 2903922dab61SIlya Dryomov } 2904922dab61SIlya Dryomov 2905922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 2906922dab61SIlya Dryomov { 2907922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2908922dab61SIlya Dryomov 2909922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2910922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 2911922dab61SIlya Dryomov lreq->linger_id, req->r_result); 2912922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 2913922dab61SIlya Dryomov lreq->committed = true; 2914922dab61SIlya Dryomov 291519079203SIlya Dryomov if (!lreq->is_watch) { 291619079203SIlya Dryomov struct ceph_osd_data *osd_data = 291719079203SIlya Dryomov osd_req_op_data(req, 0, notify, response_data); 291819079203SIlya Dryomov void *p = page_address(osd_data->pages[0]); 291919079203SIlya Dryomov 292019079203SIlya Dryomov WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || 292119079203SIlya Dryomov osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); 292219079203SIlya Dryomov 292319079203SIlya Dryomov /* make note of the notify_id */ 292419079203SIlya Dryomov if (req->r_ops[0].outdata_len >= sizeof(u64)) { 292519079203SIlya Dryomov lreq->notify_id = ceph_decode_64(&p); 292619079203SIlya Dryomov dout("lreq %p notify_id %llu\n", lreq, 292719079203SIlya Dryomov lreq->notify_id); 292819079203SIlya Dryomov } else { 292919079203SIlya Dryomov dout("lreq %p no notify_id\n", lreq); 293019079203SIlya Dryomov } 293119079203SIlya Dryomov } 293219079203SIlya Dryomov 2933922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2934922dab61SIlya Dryomov linger_put(lreq); 2935922dab61SIlya Dryomov } 2936922dab61SIlya Dryomov 2937922dab61SIlya Dryomov static int normalize_watch_error(int err) 2938922dab61SIlya Dryomov { 2939922dab61SIlya Dryomov /* 2940922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 2941922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 2942922dab61SIlya Dryomov * the delete appear the same to the user. 2943922dab61SIlya Dryomov */ 2944922dab61SIlya Dryomov if (err == -ENOENT) 2945922dab61SIlya Dryomov err = -ENOTCONN; 2946922dab61SIlya Dryomov 2947922dab61SIlya Dryomov return err; 2948922dab61SIlya Dryomov } 2949922dab61SIlya Dryomov 2950922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 2951922dab61SIlya Dryomov { 2952922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2953922dab61SIlya Dryomov 2954922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2955922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 2956922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 2957922dab61SIlya Dryomov if (req->r_result < 0) { 2958922dab61SIlya Dryomov if (!lreq->last_error) { 2959922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2960922dab61SIlya Dryomov queue_watch_error(lreq); 2961922dab61SIlya Dryomov } 2962922dab61SIlya Dryomov } 2963922dab61SIlya Dryomov 2964922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2965922dab61SIlya Dryomov linger_put(lreq); 2966922dab61SIlya Dryomov } 2967922dab61SIlya Dryomov 2968922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 2969922dab61SIlya Dryomov { 2970922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->reg_req; 2971922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2972922dab61SIlya Dryomov 2973922dab61SIlya Dryomov verify_osdc_wrlocked(req->r_osdc); 2974922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2975922dab61SIlya Dryomov 2976922dab61SIlya Dryomov if (req->r_osd) 2977922dab61SIlya Dryomov cancel_linger_request(req); 2978922dab61SIlya Dryomov 2979922dab61SIlya Dryomov request_reinit(req); 2980922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 2981922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 2982922dab61SIlya Dryomov req->r_flags = lreq->t.flags; 2983922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 2984922dab61SIlya Dryomov 2985922dab61SIlya Dryomov mutex_lock(&lreq->lock); 298619079203SIlya Dryomov if (lreq->is_watch && lreq->committed) { 2987922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2988922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id); 2989922dab61SIlya Dryomov op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; 2990922dab61SIlya Dryomov op->watch.gen = ++lreq->register_gen; 2991922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 2992922dab61SIlya Dryomov op->watch.gen); 2993922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 2994922dab61SIlya Dryomov } else { 299519079203SIlya Dryomov if (!lreq->is_watch) 299619079203SIlya Dryomov lreq->notify_id = 0; 299719079203SIlya Dryomov else 2998922dab61SIlya Dryomov WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); 2999922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 3000922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 3001922dab61SIlya Dryomov } 3002922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3003922dab61SIlya Dryomov 3004922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 3005922dab61SIlya Dryomov req->r_linger = true; 3006922dab61SIlya Dryomov 3007922dab61SIlya Dryomov submit_request(req, true); 3008922dab61SIlya Dryomov } 3009922dab61SIlya Dryomov 3010922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 3011922dab61SIlya Dryomov { 3012922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 3013922dab61SIlya Dryomov 3014922dab61SIlya Dryomov mutex_lock(&lreq->lock); 3015922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 3016922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 3017922dab61SIlya Dryomov lreq->last_error); 3018922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 3019b07d3c4bSIlya Dryomov if (!req->r_result) { 3020b07d3c4bSIlya Dryomov lreq->watch_valid_thru = lreq->ping_sent; 3021b07d3c4bSIlya Dryomov } else if (!lreq->last_error) { 3022922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 3023922dab61SIlya Dryomov queue_watch_error(lreq); 3024922dab61SIlya Dryomov } 3025922dab61SIlya Dryomov } else { 3026922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 3027922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 3028922dab61SIlya Dryomov } 3029922dab61SIlya Dryomov 3030922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3031922dab61SIlya Dryomov linger_put(lreq); 3032922dab61SIlya Dryomov } 3033922dab61SIlya Dryomov 3034922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 3035922dab61SIlya Dryomov { 3036922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3037922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->ping_req; 3038922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 3039922dab61SIlya Dryomov 3040b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 3041922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 3042922dab61SIlya Dryomov return; 3043922dab61SIlya Dryomov } 3044922dab61SIlya Dryomov 3045922dab61SIlya Dryomov lreq->ping_sent = jiffies; 3046922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 3047922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 3048922dab61SIlya Dryomov lreq->register_gen); 3049922dab61SIlya Dryomov 3050922dab61SIlya Dryomov if (req->r_osd) 3051922dab61SIlya Dryomov cancel_linger_request(req); 3052922dab61SIlya Dryomov 3053922dab61SIlya Dryomov request_reinit(req); 3054922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 3055922dab61SIlya Dryomov 3056922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 3057922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id || 3058922dab61SIlya Dryomov op->watch.op != CEPH_OSD_WATCH_OP_PING); 3059922dab61SIlya Dryomov op->watch.gen = lreq->register_gen; 3060922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 3061922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 3062922dab61SIlya Dryomov req->r_linger = true; 3063922dab61SIlya Dryomov 3064922dab61SIlya Dryomov ceph_osdc_get_request(req); 3065922dab61SIlya Dryomov account_request(req); 3066922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 3067922dab61SIlya Dryomov link_request(lreq->osd, req); 3068922dab61SIlya Dryomov send_request(req); 3069922dab61SIlya Dryomov } 3070922dab61SIlya Dryomov 3071922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 3072922dab61SIlya Dryomov { 3073922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3074922dab61SIlya Dryomov struct ceph_osd *osd; 3075922dab61SIlya Dryomov 307681c65213SIlya Dryomov down_write(&osdc->lock); 307781c65213SIlya Dryomov linger_register(lreq); 307881c65213SIlya Dryomov if (lreq->is_watch) { 307981c65213SIlya Dryomov lreq->reg_req->r_ops[0].watch.cookie = lreq->linger_id; 308081c65213SIlya Dryomov lreq->ping_req->r_ops[0].watch.cookie = lreq->linger_id; 308181c65213SIlya Dryomov } else { 308281c65213SIlya Dryomov lreq->reg_req->r_ops[0].notify.cookie = lreq->linger_id; 308381c65213SIlya Dryomov } 308481c65213SIlya Dryomov 30857de030d6SIlya Dryomov calc_target(osdc, &lreq->t, NULL, false); 3086922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3087922dab61SIlya Dryomov link_linger(osd, lreq); 3088922dab61SIlya Dryomov 3089922dab61SIlya Dryomov send_linger(lreq); 309081c65213SIlya Dryomov up_write(&osdc->lock); 3091922dab61SIlya Dryomov } 3092922dab61SIlya Dryomov 30934609245eSIlya Dryomov static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) 30944609245eSIlya Dryomov { 30954609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 30964609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 30974609245eSIlya Dryomov 30984609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 30994609245eSIlya Dryomov 31004609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 31014609245eSIlya Dryomov lreq->linger_id); 31024609245eSIlya Dryomov if (!lookup_lreq) 31034609245eSIlya Dryomov return; 31044609245eSIlya Dryomov 31054609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 31064609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 31074609245eSIlya Dryomov linger_put(lreq); 31084609245eSIlya Dryomov } 31094609245eSIlya Dryomov 3110922dab61SIlya Dryomov /* 3111922dab61SIlya Dryomov * @lreq has to be both registered and linked. 3112922dab61SIlya Dryomov */ 3113922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 3114922dab61SIlya Dryomov { 311519079203SIlya Dryomov if (lreq->is_watch && lreq->ping_req->r_osd) 3116922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 3117922dab61SIlya Dryomov if (lreq->reg_req->r_osd) 3118922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 31194609245eSIlya Dryomov cancel_linger_map_check(lreq); 3120922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3121922dab61SIlya Dryomov linger_unregister(lreq); 3122922dab61SIlya Dryomov } 3123922dab61SIlya Dryomov 3124922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 3125922dab61SIlya Dryomov { 3126922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3127922dab61SIlya Dryomov 3128922dab61SIlya Dryomov down_write(&osdc->lock); 3129922dab61SIlya Dryomov if (__linger_registered(lreq)) 3130922dab61SIlya Dryomov __linger_cancel(lreq); 3131922dab61SIlya Dryomov up_write(&osdc->lock); 3132922dab61SIlya Dryomov } 3133922dab61SIlya Dryomov 31344609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq); 31354609245eSIlya Dryomov 31364609245eSIlya Dryomov static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) 31374609245eSIlya Dryomov { 31384609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 31394609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 31404609245eSIlya Dryomov 31414609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 31424609245eSIlya Dryomov WARN_ON(!map->epoch); 31434609245eSIlya Dryomov 31444609245eSIlya Dryomov if (lreq->register_gen) { 31454609245eSIlya Dryomov lreq->map_dne_bound = map->epoch; 31464609245eSIlya Dryomov dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, 31474609245eSIlya Dryomov lreq, lreq->linger_id); 31484609245eSIlya Dryomov } else { 31494609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", 31504609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 31514609245eSIlya Dryomov map->epoch); 31524609245eSIlya Dryomov } 31534609245eSIlya Dryomov 31544609245eSIlya Dryomov if (lreq->map_dne_bound) { 31554609245eSIlya Dryomov if (map->epoch >= lreq->map_dne_bound) { 31564609245eSIlya Dryomov /* we had a new enough map */ 31574609245eSIlya Dryomov pr_info("linger_id %llu pool does not exist\n", 31584609245eSIlya Dryomov lreq->linger_id); 31594609245eSIlya Dryomov linger_reg_commit_complete(lreq, -ENOENT); 31604609245eSIlya Dryomov __linger_cancel(lreq); 31614609245eSIlya Dryomov } 31624609245eSIlya Dryomov } else { 31634609245eSIlya Dryomov send_linger_map_check(lreq); 31644609245eSIlya Dryomov } 31654609245eSIlya Dryomov } 31664609245eSIlya Dryomov 31674609245eSIlya Dryomov static void linger_map_check_cb(struct ceph_mon_generic_request *greq) 31684609245eSIlya Dryomov { 31694609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 31704609245eSIlya Dryomov struct ceph_osd_linger_request *lreq; 31714609245eSIlya Dryomov u64 linger_id = greq->private_data; 31724609245eSIlya Dryomov 31734609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 31744609245eSIlya Dryomov 31754609245eSIlya Dryomov down_write(&osdc->lock); 31764609245eSIlya Dryomov lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); 31774609245eSIlya Dryomov if (!lreq) { 31784609245eSIlya Dryomov dout("%s linger_id %llu dne\n", __func__, linger_id); 31794609245eSIlya Dryomov goto out_unlock; 31804609245eSIlya Dryomov } 31814609245eSIlya Dryomov 31824609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", 31834609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 31844609245eSIlya Dryomov greq->u.newest); 31854609245eSIlya Dryomov if (!lreq->map_dne_bound) 31864609245eSIlya Dryomov lreq->map_dne_bound = greq->u.newest; 31874609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 31884609245eSIlya Dryomov check_linger_pool_dne(lreq); 31894609245eSIlya Dryomov 31904609245eSIlya Dryomov linger_put(lreq); 31914609245eSIlya Dryomov out_unlock: 31924609245eSIlya Dryomov up_write(&osdc->lock); 31934609245eSIlya Dryomov } 31944609245eSIlya Dryomov 31954609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq) 31964609245eSIlya Dryomov { 31974609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 31984609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 31994609245eSIlya Dryomov int ret; 32004609245eSIlya Dryomov 32014609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 32024609245eSIlya Dryomov 32034609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 32044609245eSIlya Dryomov lreq->linger_id); 32054609245eSIlya Dryomov if (lookup_lreq) { 32064609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 32074609245eSIlya Dryomov return; 32084609245eSIlya Dryomov } 32094609245eSIlya Dryomov 32104609245eSIlya Dryomov linger_get(lreq); 32114609245eSIlya Dryomov insert_linger_mc(&osdc->linger_map_checks, lreq); 32124609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 32134609245eSIlya Dryomov linger_map_check_cb, lreq->linger_id); 32144609245eSIlya Dryomov WARN_ON(ret); 32154609245eSIlya Dryomov } 32164609245eSIlya Dryomov 3217922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 3218922dab61SIlya Dryomov { 3219922dab61SIlya Dryomov int ret; 3220922dab61SIlya Dryomov 3221922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 3222922dab61SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); 3223922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 3224922dab61SIlya Dryomov } 3225922dab61SIlya Dryomov 322619079203SIlya Dryomov static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) 322719079203SIlya Dryomov { 322819079203SIlya Dryomov int ret; 322919079203SIlya Dryomov 323019079203SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 323119079203SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); 323219079203SIlya Dryomov return ret ?: lreq->notify_finish_error; 323319079203SIlya Dryomov } 323419079203SIlya Dryomov 3235922dab61SIlya Dryomov /* 3236fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 3237fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 3238fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 3239fbca9635SIlya Dryomov * reset is detected. 32403d14c5d2SYehuda Sadeh */ 32413d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 32423d14c5d2SYehuda Sadeh { 32433d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 32443d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 3245a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 32465aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 32477cc5e38fSIlya Dryomov unsigned long expiry_cutoff = jiffies - opts->osd_request_timeout; 32485aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 32495aea3dcdSIlya Dryomov struct rb_node *n, *p; 32503d14c5d2SYehuda Sadeh 32515aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 32525aea3dcdSIlya Dryomov down_write(&osdc->lock); 32533d14c5d2SYehuda Sadeh 32543d14c5d2SYehuda Sadeh /* 32553d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 32563d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 32573d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 32583d14c5d2SYehuda Sadeh */ 32595aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 32605aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 32615aea3dcdSIlya Dryomov bool found = false; 32623d14c5d2SYehuda Sadeh 32637cc5e38fSIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 32645aea3dcdSIlya Dryomov struct ceph_osd_request *req = 32655aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 32665aea3dcdSIlya Dryomov 32677cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 32687cc5e38fSIlya Dryomov 32695aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 32705aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 32715aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 32725aea3dcdSIlya Dryomov found = true; 32735aea3dcdSIlya Dryomov } 32747cc5e38fSIlya Dryomov if (opts->osd_request_timeout && 32757cc5e38fSIlya Dryomov time_before(req->r_start_stamp, expiry_cutoff)) { 32767cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 32777cc5e38fSIlya Dryomov req->r_tid, osd->o_osd); 32787cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 32797cc5e38fSIlya Dryomov } 32805aea3dcdSIlya Dryomov } 3281922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 3282922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3283922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 3284922dab61SIlya Dryomov 3285922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 3286922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 3287922dab61SIlya Dryomov found = true; 3288922dab61SIlya Dryomov 3289922dab61SIlya Dryomov mutex_lock(&lreq->lock); 329019079203SIlya Dryomov if (lreq->is_watch && lreq->committed && !lreq->last_error) 3291922dab61SIlya Dryomov send_linger_ping(lreq); 3292922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3293922dab61SIlya Dryomov } 32945aea3dcdSIlya Dryomov 32955aea3dcdSIlya Dryomov if (found) 32963d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 32973d14c5d2SYehuda Sadeh } 32985aea3dcdSIlya Dryomov 32997cc5e38fSIlya Dryomov if (opts->osd_request_timeout) { 33007cc5e38fSIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 33017cc5e38fSIlya Dryomov struct ceph_osd_request *req = 33027cc5e38fSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 33037cc5e38fSIlya Dryomov 33047cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 33057cc5e38fSIlya Dryomov 33067cc5e38fSIlya Dryomov if (time_before(req->r_start_stamp, expiry_cutoff)) { 33077cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 33087cc5e38fSIlya Dryomov req->r_tid, osdc->homeless_osd.o_osd); 33097cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 33107cc5e38fSIlya Dryomov } 33117cc5e38fSIlya Dryomov } 33127cc5e38fSIlya Dryomov } 33137cc5e38fSIlya Dryomov 33145aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 33155aea3dcdSIlya Dryomov maybe_request_map(osdc); 33165aea3dcdSIlya Dryomov 33173d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 33185aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 33195aea3dcdSIlya Dryomov struct ceph_osd, 33203d14c5d2SYehuda Sadeh o_keepalive_item); 33213d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 33223d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 33233d14c5d2SYehuda Sadeh } 33243d14c5d2SYehuda Sadeh 33255aea3dcdSIlya Dryomov up_write(&osdc->lock); 3326fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 3327fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 33283d14c5d2SYehuda Sadeh } 33293d14c5d2SYehuda Sadeh 33303d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 33313d14c5d2SYehuda Sadeh { 33323d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 33333d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 33343d14c5d2SYehuda Sadeh osds_timeout_work.work); 3335a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 333642a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 33373d14c5d2SYehuda Sadeh 333842a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 33395aea3dcdSIlya Dryomov down_write(&osdc->lock); 334042a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 334142a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 334242a2c09fSIlya Dryomov break; 334342a2c09fSIlya Dryomov 33445aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 3345922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 33465aea3dcdSIlya Dryomov close_osd(osd); 334742a2c09fSIlya Dryomov } 334842a2c09fSIlya Dryomov 33495aea3dcdSIlya Dryomov up_write(&osdc->lock); 33503d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 33513d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 33523d14c5d2SYehuda Sadeh } 33533d14c5d2SYehuda Sadeh 3354205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 3355205ee118SIlya Dryomov struct ceph_object_locator *oloc) 3356205ee118SIlya Dryomov { 3357205ee118SIlya Dryomov u8 struct_v, struct_cv; 3358205ee118SIlya Dryomov u32 len; 3359205ee118SIlya Dryomov void *struct_end; 3360205ee118SIlya Dryomov int ret = 0; 3361205ee118SIlya Dryomov 3362205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3363205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3364205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3365205ee118SIlya Dryomov if (struct_v < 3) { 3366205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 3367205ee118SIlya Dryomov struct_v, struct_cv); 3368205ee118SIlya Dryomov goto e_inval; 3369205ee118SIlya Dryomov } 3370205ee118SIlya Dryomov if (struct_cv > 6) { 3371205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 3372205ee118SIlya Dryomov struct_v, struct_cv); 3373205ee118SIlya Dryomov goto e_inval; 3374205ee118SIlya Dryomov } 3375205ee118SIlya Dryomov len = ceph_decode_32(p); 3376205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3377205ee118SIlya Dryomov struct_end = *p + len; 3378205ee118SIlya Dryomov 3379205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 3380205ee118SIlya Dryomov *p += 4; /* skip preferred */ 3381205ee118SIlya Dryomov 3382205ee118SIlya Dryomov len = ceph_decode_32(p); 3383205ee118SIlya Dryomov if (len > 0) { 3384205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 3385205ee118SIlya Dryomov goto e_inval; 3386205ee118SIlya Dryomov } 3387205ee118SIlya Dryomov 3388205ee118SIlya Dryomov if (struct_v >= 5) { 3389cd08e0a2SYan, Zheng bool changed = false; 3390cd08e0a2SYan, Zheng 3391205ee118SIlya Dryomov len = ceph_decode_32(p); 3392205ee118SIlya Dryomov if (len > 0) { 339330c156d9SYan, Zheng ceph_decode_need(p, end, len, e_inval); 3394cd08e0a2SYan, Zheng if (!oloc->pool_ns || 3395cd08e0a2SYan, Zheng ceph_compare_string(oloc->pool_ns, *p, len)) 3396cd08e0a2SYan, Zheng changed = true; 339730c156d9SYan, Zheng *p += len; 3398cd08e0a2SYan, Zheng } else { 3399cd08e0a2SYan, Zheng if (oloc->pool_ns) 3400cd08e0a2SYan, Zheng changed = true; 3401cd08e0a2SYan, Zheng } 3402cd08e0a2SYan, Zheng if (changed) { 3403cd08e0a2SYan, Zheng /* redirect changes namespace */ 3404cd08e0a2SYan, Zheng pr_warn("ceph_object_locator::nspace is changed\n"); 3405cd08e0a2SYan, Zheng goto e_inval; 3406205ee118SIlya Dryomov } 3407205ee118SIlya Dryomov } 3408205ee118SIlya Dryomov 3409205ee118SIlya Dryomov if (struct_v >= 6) { 3410205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 3411205ee118SIlya Dryomov if (hash != -1) { 3412205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 3413205ee118SIlya Dryomov goto e_inval; 3414205ee118SIlya Dryomov } 3415205ee118SIlya Dryomov } 3416205ee118SIlya Dryomov 3417205ee118SIlya Dryomov /* skip the rest */ 3418205ee118SIlya Dryomov *p = struct_end; 3419205ee118SIlya Dryomov out: 3420205ee118SIlya Dryomov return ret; 3421205ee118SIlya Dryomov 3422205ee118SIlya Dryomov e_inval: 3423205ee118SIlya Dryomov ret = -EINVAL; 3424205ee118SIlya Dryomov goto out; 3425205ee118SIlya Dryomov } 3426205ee118SIlya Dryomov 3427205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 3428205ee118SIlya Dryomov struct ceph_request_redirect *redir) 3429205ee118SIlya Dryomov { 3430205ee118SIlya Dryomov u8 struct_v, struct_cv; 3431205ee118SIlya Dryomov u32 len; 3432205ee118SIlya Dryomov void *struct_end; 3433205ee118SIlya Dryomov int ret; 3434205ee118SIlya Dryomov 3435205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3436205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3437205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3438205ee118SIlya Dryomov if (struct_cv > 1) { 3439205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 3440205ee118SIlya Dryomov struct_v, struct_cv); 3441205ee118SIlya Dryomov goto e_inval; 3442205ee118SIlya Dryomov } 3443205ee118SIlya Dryomov len = ceph_decode_32(p); 3444205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3445205ee118SIlya Dryomov struct_end = *p + len; 3446205ee118SIlya Dryomov 3447205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 3448205ee118SIlya Dryomov if (ret) 3449205ee118SIlya Dryomov goto out; 3450205ee118SIlya Dryomov 3451205ee118SIlya Dryomov len = ceph_decode_32(p); 3452205ee118SIlya Dryomov if (len > 0) { 3453205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 3454205ee118SIlya Dryomov goto e_inval; 3455205ee118SIlya Dryomov } 3456205ee118SIlya Dryomov 3457205ee118SIlya Dryomov len = ceph_decode_32(p); 3458205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 3459205ee118SIlya Dryomov 3460205ee118SIlya Dryomov /* skip the rest */ 3461205ee118SIlya Dryomov *p = struct_end; 3462205ee118SIlya Dryomov out: 3463205ee118SIlya Dryomov return ret; 3464205ee118SIlya Dryomov 3465205ee118SIlya Dryomov e_inval: 3466205ee118SIlya Dryomov ret = -EINVAL; 3467205ee118SIlya Dryomov goto out; 3468205ee118SIlya Dryomov } 3469205ee118SIlya Dryomov 3470fe5da05eSIlya Dryomov struct MOSDOpReply { 3471fe5da05eSIlya Dryomov struct ceph_pg pgid; 3472fe5da05eSIlya Dryomov u64 flags; 3473fe5da05eSIlya Dryomov int result; 3474fe5da05eSIlya Dryomov u32 epoch; 3475fe5da05eSIlya Dryomov int num_ops; 3476fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 3477fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 3478fe5da05eSIlya Dryomov int retry_attempt; 3479fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 3480fe5da05eSIlya Dryomov u64 user_version; 3481fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 3482fe5da05eSIlya Dryomov }; 348325845472SSage Weil 3484fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 34853d14c5d2SYehuda Sadeh { 3486fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 3487fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 3488fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 3489fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 3490b0b31a8fSIlya Dryomov u8 decode_redir; 3491fe5da05eSIlya Dryomov u32 len; 3492fe5da05eSIlya Dryomov int ret; 3493fe5da05eSIlya Dryomov int i; 34943d14c5d2SYehuda Sadeh 3495fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 3496fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 3497fe5da05eSIlya Dryomov p += len; /* skip oid */ 34981b83bef2SSage Weil 3499fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 3500fe5da05eSIlya Dryomov if (ret) 3501fe5da05eSIlya Dryomov return ret; 35021b83bef2SSage Weil 3503fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 3504fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 3505fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 3506fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 3507fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 3508fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 35091b83bef2SSage Weil 3510fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 3511fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 3512fe5da05eSIlya Dryomov goto e_inval; 35131b83bef2SSage Weil 3514fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 3515fe5da05eSIlya Dryomov e_inval); 3516fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 35171b83bef2SSage Weil struct ceph_osd_op *op = p; 35181b83bef2SSage Weil 3519fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 35201b83bef2SSage Weil p += sizeof(*op); 35211b83bef2SSage Weil } 3522fe5da05eSIlya Dryomov 3523fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 3524fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 3525fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 3526fe5da05eSIlya Dryomov 3527fe5da05eSIlya Dryomov if (version >= 5) { 3528fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 3529fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 3530fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 3531fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 3532fe5da05eSIlya Dryomov } else { 3533fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 3534fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 35351b83bef2SSage Weil } 35361b83bef2SSage Weil 3537fe5da05eSIlya Dryomov if (version >= 6) { 3538fe5da05eSIlya Dryomov if (version >= 7) 3539fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 3540b0b31a8fSIlya Dryomov else 3541b0b31a8fSIlya Dryomov decode_redir = 1; 3542b0b31a8fSIlya Dryomov } else { 3543b0b31a8fSIlya Dryomov decode_redir = 0; 3544b0b31a8fSIlya Dryomov } 3545b0b31a8fSIlya Dryomov 3546b0b31a8fSIlya Dryomov if (decode_redir) { 3547fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 3548fe5da05eSIlya Dryomov if (ret) 3549fe5da05eSIlya Dryomov return ret; 3550205ee118SIlya Dryomov } else { 3551fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 3552205ee118SIlya Dryomov } 3553205ee118SIlya Dryomov 3554fe5da05eSIlya Dryomov return 0; 3555205ee118SIlya Dryomov 3556fe5da05eSIlya Dryomov e_inval: 3557fe5da05eSIlya Dryomov return -EINVAL; 3558fe5da05eSIlya Dryomov } 3559fe5da05eSIlya Dryomov 3560fe5da05eSIlya Dryomov /* 3561b18b9550SIlya Dryomov * Handle MOSDOpReply. Set ->r_result and call the callback if it is 3562b18b9550SIlya Dryomov * specified. 3563fe5da05eSIlya Dryomov */ 35645aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 3565fe5da05eSIlya Dryomov { 35665aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 3567fe5da05eSIlya Dryomov struct ceph_osd_request *req; 3568fe5da05eSIlya Dryomov struct MOSDOpReply m; 3569fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 3570fe5da05eSIlya Dryomov u32 data_len = 0; 3571fe5da05eSIlya Dryomov int ret; 3572fe5da05eSIlya Dryomov int i; 3573fe5da05eSIlya Dryomov 3574fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 3575fe5da05eSIlya Dryomov 35765aea3dcdSIlya Dryomov down_read(&osdc->lock); 35775aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 35785aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 35795aea3dcdSIlya Dryomov goto out_unlock_osdc; 3580fe5da05eSIlya Dryomov } 35815aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 35825aea3dcdSIlya Dryomov 35835aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 35845aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 35855aea3dcdSIlya Dryomov if (!req) { 35865aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 35875aea3dcdSIlya Dryomov goto out_unlock_session; 35885aea3dcdSIlya Dryomov } 3589fe5da05eSIlya Dryomov 3590cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns; 3591fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 3592cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = NULL; 3593fe5da05eSIlya Dryomov if (ret) { 3594fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 3595fe5da05eSIlya Dryomov req->r_tid, ret); 3596fe5da05eSIlya Dryomov ceph_msg_dump(msg); 3597fe5da05eSIlya Dryomov goto fail_request; 3598fe5da05eSIlya Dryomov } 3599fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 3600fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 3601fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 3602fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 3603fe5da05eSIlya Dryomov 3604fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 3605fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 3606fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 3607fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 3608fe5da05eSIlya Dryomov req->r_attempts - 1); 36095aea3dcdSIlya Dryomov goto out_unlock_session; 3610fe5da05eSIlya Dryomov } 3611fe5da05eSIlya Dryomov } else { 3612fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 3613fe5da05eSIlya Dryomov } 3614fe5da05eSIlya Dryomov 3615fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 3616fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 3617fe5da05eSIlya Dryomov m.redirect.oloc.pool); 36185aea3dcdSIlya Dryomov unlink_request(osd, req); 36195aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 3620205ee118SIlya Dryomov 362130c156d9SYan, Zheng /* 362230c156d9SYan, Zheng * Not ceph_oloc_copy() - changing pool_ns is not 362330c156d9SYan, Zheng * supported. 362430c156d9SYan, Zheng */ 362530c156d9SYan, Zheng req->r_t.target_oloc.pool = m.redirect.oloc.pool; 36265aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; 36275aea3dcdSIlya Dryomov req->r_tid = 0; 36285aea3dcdSIlya Dryomov __submit_request(req, false); 36295aea3dcdSIlya Dryomov goto out_unlock_osdc; 3630205ee118SIlya Dryomov } 3631205ee118SIlya Dryomov 3632fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 3633fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 3634fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 3635fe5da05eSIlya Dryomov goto fail_request; 3636fe5da05eSIlya Dryomov } 3637fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 3638fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 3639fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 3640fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 3641fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 3642fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 3643fe5da05eSIlya Dryomov } 3644fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 3645fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 3646fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 3647fe5da05eSIlya Dryomov goto fail_request; 3648fe5da05eSIlya Dryomov } 3649b18b9550SIlya Dryomov dout("%s req %p tid %llu result %d data_len %u\n", __func__, 3650b18b9550SIlya Dryomov req, req->r_tid, m.result, data_len); 36513d14c5d2SYehuda Sadeh 3652b18b9550SIlya Dryomov /* 3653b18b9550SIlya Dryomov * Since we only ever request ONDISK, we should only ever get 3654b18b9550SIlya Dryomov * one (type of) reply back. 3655b18b9550SIlya Dryomov */ 3656b18b9550SIlya Dryomov WARN_ON(!(m.flags & CEPH_OSD_FLAG_ONDISK)); 3657fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 365845ee2c1dSIlya Dryomov finish_request(req); 36595aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 36605aea3dcdSIlya Dryomov up_read(&osdc->lock); 36613d14c5d2SYehuda Sadeh 3662fe5da05eSIlya Dryomov __complete_request(req); 36633d14c5d2SYehuda Sadeh return; 3664fe5da05eSIlya Dryomov 3665fe5da05eSIlya Dryomov fail_request: 36664609245eSIlya Dryomov complete_request(req, -EIO); 36675aea3dcdSIlya Dryomov out_unlock_session: 36685aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 36695aea3dcdSIlya Dryomov out_unlock_osdc: 36705aea3dcdSIlya Dryomov up_read(&osdc->lock); 36713d14c5d2SYehuda Sadeh } 36723d14c5d2SYehuda Sadeh 367342c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 367442c1b124SIlya Dryomov { 367542c1b124SIlya Dryomov struct rb_node *n; 367642c1b124SIlya Dryomov 367742c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 367842c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 367942c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 368042c1b124SIlya Dryomov 368142c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 368242c1b124SIlya Dryomov } 368342c1b124SIlya Dryomov } 368442c1b124SIlya Dryomov 36855aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 36863d14c5d2SYehuda Sadeh { 36875aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 36883d14c5d2SYehuda Sadeh 36895aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 36905aea3dcdSIlya Dryomov if (!pi) 36915aea3dcdSIlya Dryomov return false; 36923d14c5d2SYehuda Sadeh 36935aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 36943d14c5d2SYehuda Sadeh } 36953d14c5d2SYehuda Sadeh 3696922dab61SIlya Dryomov static enum calc_target_result 3697922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 3698922dab61SIlya Dryomov { 3699922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3700922dab61SIlya Dryomov enum calc_target_result ct_res; 3701922dab61SIlya Dryomov 37027de030d6SIlya Dryomov ct_res = calc_target(osdc, &lreq->t, NULL, true); 3703922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 3704922dab61SIlya Dryomov struct ceph_osd *osd; 3705922dab61SIlya Dryomov 3706922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3707922dab61SIlya Dryomov if (osd != lreq->osd) { 3708922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3709922dab61SIlya Dryomov link_linger(osd, lreq); 3710922dab61SIlya Dryomov } 3711922dab61SIlya Dryomov } 3712922dab61SIlya Dryomov 3713922dab61SIlya Dryomov return ct_res; 3714922dab61SIlya Dryomov } 3715922dab61SIlya Dryomov 37163d14c5d2SYehuda Sadeh /* 37175aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 37183d14c5d2SYehuda Sadeh */ 37195aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 37205aea3dcdSIlya Dryomov bool force_resend, 37215aea3dcdSIlya Dryomov bool cleared_full, 37225aea3dcdSIlya Dryomov bool check_pool_cleared_full, 37235aea3dcdSIlya Dryomov struct rb_root *need_resend, 37245aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 37253d14c5d2SYehuda Sadeh { 37265aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 37275aea3dcdSIlya Dryomov struct rb_node *n; 37285aea3dcdSIlya Dryomov bool force_resend_writes; 37293d14c5d2SYehuda Sadeh 3730922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 3731922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3732922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3733922dab61SIlya Dryomov enum calc_target_result ct_res; 3734922dab61SIlya Dryomov 3735922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 3736922dab61SIlya Dryomov 3737922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 3738922dab61SIlya Dryomov lreq->linger_id); 3739922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 3740922dab61SIlya Dryomov switch (ct_res) { 3741922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 3742922dab61SIlya Dryomov force_resend_writes = cleared_full || 3743922dab61SIlya Dryomov (check_pool_cleared_full && 3744922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 3745922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 3746922dab61SIlya Dryomov break; 3747922dab61SIlya Dryomov 3748922dab61SIlya Dryomov /* fall through */ 3749922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 37504609245eSIlya Dryomov cancel_linger_map_check(lreq); 3751922dab61SIlya Dryomov /* 3752922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 3753922dab61SIlya Dryomov * may have already added it to the list, since 3754922dab61SIlya Dryomov * it's not unlinked here. 3755922dab61SIlya Dryomov */ 3756922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 3757922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 3758922dab61SIlya Dryomov break; 3759922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 3760a10bcb19SIlya Dryomov list_del_init(&lreq->scan_item); 37614609245eSIlya Dryomov check_linger_pool_dne(lreq); 3762922dab61SIlya Dryomov break; 3763922dab61SIlya Dryomov } 3764922dab61SIlya Dryomov } 3765922dab61SIlya Dryomov 37665aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 37675aea3dcdSIlya Dryomov struct ceph_osd_request *req = 37685aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 37695aea3dcdSIlya Dryomov enum calc_target_result ct_res; 3770ab60b16dSAlex Elder 37714609245eSIlya Dryomov n = rb_next(n); /* unlink_request(), check_pool_dne() */ 3772ab60b16dSAlex Elder 37735aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 37747de030d6SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, &req->r_osd->o_con, 37757de030d6SIlya Dryomov false); 37765aea3dcdSIlya Dryomov switch (ct_res) { 37775aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 37785aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 37795aea3dcdSIlya Dryomov (check_pool_cleared_full && 37805aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 37815aea3dcdSIlya Dryomov if (!force_resend && 37825aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 37835aea3dcdSIlya Dryomov !force_resend_writes)) 37845aea3dcdSIlya Dryomov break; 3785a40c4f10SYehuda Sadeh 37865aea3dcdSIlya Dryomov /* fall through */ 37875aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 37884609245eSIlya Dryomov cancel_map_check(req); 37895aea3dcdSIlya Dryomov unlink_request(osd, req); 37905aea3dcdSIlya Dryomov insert_request(need_resend, req); 37915aea3dcdSIlya Dryomov break; 37925aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 37934609245eSIlya Dryomov check_pool_dne(req); 37945aea3dcdSIlya Dryomov break; 3795a40c4f10SYehuda Sadeh } 37963d14c5d2SYehuda Sadeh } 37973d14c5d2SYehuda Sadeh } 37986f6c7006SSage Weil 379942c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 38005aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 38015aea3dcdSIlya Dryomov struct rb_root *need_resend, 38025aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 380342c1b124SIlya Dryomov { 380442c1b124SIlya Dryomov struct ceph_osdmap *newmap; 380542c1b124SIlya Dryomov struct rb_node *n; 380642c1b124SIlya Dryomov bool skipped_map = false; 380742c1b124SIlya Dryomov bool was_full; 380842c1b124SIlya Dryomov 3809b7ec35b3SIlya Dryomov was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 381042c1b124SIlya Dryomov set_pool_was_full(osdc); 381142c1b124SIlya Dryomov 381242c1b124SIlya Dryomov if (incremental) 381342c1b124SIlya Dryomov newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); 381442c1b124SIlya Dryomov else 381542c1b124SIlya Dryomov newmap = ceph_osdmap_decode(&p, end); 381642c1b124SIlya Dryomov if (IS_ERR(newmap)) 381742c1b124SIlya Dryomov return PTR_ERR(newmap); 381842c1b124SIlya Dryomov 381942c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 382042c1b124SIlya Dryomov /* 382142c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 382242c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 382342c1b124SIlya Dryomov * should be false. 382442c1b124SIlya Dryomov */ 382542c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 382642c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 382742c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 382842c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 382942c1b124SIlya Dryomov 383042c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 383142c1b124SIlya Dryomov if (old_pi) 383242c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 383342c1b124SIlya Dryomov else 383442c1b124SIlya Dryomov WARN_ON(pi->was_full); 383542c1b124SIlya Dryomov } 383642c1b124SIlya Dryomov 383742c1b124SIlya Dryomov if (osdc->osdmap->epoch && 383842c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 383942c1b124SIlya Dryomov WARN_ON(incremental); 384042c1b124SIlya Dryomov skipped_map = true; 384142c1b124SIlya Dryomov } 384242c1b124SIlya Dryomov 384342c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 384442c1b124SIlya Dryomov osdc->osdmap = newmap; 384542c1b124SIlya Dryomov } 384642c1b124SIlya Dryomov 3847b7ec35b3SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 38485aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 38495aea3dcdSIlya Dryomov need_resend, need_resend_linger); 38505aea3dcdSIlya Dryomov 38515aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 38525aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 38535aea3dcdSIlya Dryomov 38545aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 38555aea3dcdSIlya Dryomov 38565aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 38575aea3dcdSIlya Dryomov need_resend_linger); 38585aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 38595aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 38605aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 38615aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 38625aea3dcdSIlya Dryomov close_osd(osd); 38635aea3dcdSIlya Dryomov } 386442c1b124SIlya Dryomov 386542c1b124SIlya Dryomov return 0; 386642c1b124SIlya Dryomov } 38676f6c7006SSage Weil 38685aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 38695aea3dcdSIlya Dryomov struct rb_root *need_resend, 38705aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 38715aea3dcdSIlya Dryomov { 3872922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 387304c7d789SIlya Dryomov enum calc_target_result ct_res; 38745aea3dcdSIlya Dryomov struct rb_node *n; 38755aea3dcdSIlya Dryomov 387604c7d789SIlya Dryomov /* make sure need_resend targets reflect latest map */ 387704c7d789SIlya Dryomov for (n = rb_first(need_resend); n; ) { 387804c7d789SIlya Dryomov struct ceph_osd_request *req = 387904c7d789SIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 388004c7d789SIlya Dryomov 388104c7d789SIlya Dryomov n = rb_next(n); 388204c7d789SIlya Dryomov 388304c7d789SIlya Dryomov if (req->r_t.epoch < osdc->osdmap->epoch) { 388404c7d789SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, NULL, false); 388504c7d789SIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) { 388604c7d789SIlya Dryomov erase_request(need_resend, req); 388704c7d789SIlya Dryomov check_pool_dne(req); 388804c7d789SIlya Dryomov } 388904c7d789SIlya Dryomov } 389004c7d789SIlya Dryomov } 389104c7d789SIlya Dryomov 38925aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 38935aea3dcdSIlya Dryomov struct ceph_osd_request *req = 38945aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 38955aea3dcdSIlya Dryomov struct ceph_osd *osd; 38965aea3dcdSIlya Dryomov 38975aea3dcdSIlya Dryomov n = rb_next(n); 38985aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 38995aea3dcdSIlya Dryomov 39005aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 39015aea3dcdSIlya Dryomov link_request(osd, req); 39025aea3dcdSIlya Dryomov if (!req->r_linger) { 39035aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 39045aea3dcdSIlya Dryomov send_request(req); 3905922dab61SIlya Dryomov } else { 3906922dab61SIlya Dryomov cancel_linger_request(req); 39075aea3dcdSIlya Dryomov } 39085aea3dcdSIlya Dryomov } 3909922dab61SIlya Dryomov 3910922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 3911922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 3912922dab61SIlya Dryomov send_linger(lreq); 3913922dab61SIlya Dryomov 3914922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 3915922dab61SIlya Dryomov } 39165aea3dcdSIlya Dryomov } 39175aea3dcdSIlya Dryomov 39183d14c5d2SYehuda Sadeh /* 39193d14c5d2SYehuda Sadeh * Process updated osd map. 39203d14c5d2SYehuda Sadeh * 39213d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 39223d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 39233d14c5d2SYehuda Sadeh * off to different OSDs as needed. 39243d14c5d2SYehuda Sadeh */ 39253d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 39263d14c5d2SYehuda Sadeh { 392742c1b124SIlya Dryomov void *p = msg->front.iov_base; 392842c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 39293d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 39303d14c5d2SYehuda Sadeh u32 epoch; 39313d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 39325aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 39335aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 393442c1b124SIlya Dryomov bool handled_incremental = false; 393542c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 393642c1b124SIlya Dryomov bool pauserd, pausewr; 393742c1b124SIlya Dryomov int err; 39383d14c5d2SYehuda Sadeh 393942c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 39405aea3dcdSIlya Dryomov down_write(&osdc->lock); 39413d14c5d2SYehuda Sadeh 39423d14c5d2SYehuda Sadeh /* verify fsid */ 39433d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 39443d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 39453d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 394642c1b124SIlya Dryomov goto bad; 39473d14c5d2SYehuda Sadeh 3948b7ec35b3SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3949b7ec35b3SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3950b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 395142c1b124SIlya Dryomov have_pool_full(osdc); 39529a1ea2dbSJosh Durgin 39533d14c5d2SYehuda Sadeh /* incremental maps */ 39543d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 39553d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 39563d14c5d2SYehuda Sadeh while (nr_maps > 0) { 39573d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 39583d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 39593d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 39603d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 396142c1b124SIlya Dryomov if (osdc->osdmap->epoch && 396242c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 39633d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 39643d14c5d2SYehuda Sadeh epoch, maplen); 39655aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 39665aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 396742c1b124SIlya Dryomov if (err) 39683d14c5d2SYehuda Sadeh goto bad; 396942c1b124SIlya Dryomov handled_incremental = true; 39703d14c5d2SYehuda Sadeh } else { 39713d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 39723d14c5d2SYehuda Sadeh epoch, maplen); 39733d14c5d2SYehuda Sadeh } 397442c1b124SIlya Dryomov p += maplen; 39753d14c5d2SYehuda Sadeh nr_maps--; 39763d14c5d2SYehuda Sadeh } 397742c1b124SIlya Dryomov if (handled_incremental) 39783d14c5d2SYehuda Sadeh goto done; 39793d14c5d2SYehuda Sadeh 39803d14c5d2SYehuda Sadeh /* full maps */ 39813d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 39823d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 39833d14c5d2SYehuda Sadeh while (nr_maps) { 39843d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 39853d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 39863d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 39873d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 39883d14c5d2SYehuda Sadeh if (nr_maps > 1) { 39893d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 39903d14c5d2SYehuda Sadeh epoch, maplen); 3991e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 39923d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 39933d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 39943d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 39953d14c5d2SYehuda Sadeh } else { 39963d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 39975aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 39985aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 399942c1b124SIlya Dryomov if (err) 40003d14c5d2SYehuda Sadeh goto bad; 40013d14c5d2SYehuda Sadeh } 40023d14c5d2SYehuda Sadeh p += maplen; 40033d14c5d2SYehuda Sadeh nr_maps--; 40043d14c5d2SYehuda Sadeh } 40053d14c5d2SYehuda Sadeh 40063d14c5d2SYehuda Sadeh done: 4007cd634fb6SSage Weil /* 4008cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 4009cd634fb6SSage Weil * we find out when we are no longer full and stop returning 4010cd634fb6SSage Weil * ENOSPC. 4011cd634fb6SSage Weil */ 4012b7ec35b3SIlya Dryomov pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 4013b7ec35b3SIlya Dryomov pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 4014b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 401542c1b124SIlya Dryomov have_pool_full(osdc); 401658eb7932SJeff Layton if (was_pauserd || was_pausewr || pauserd || pausewr || 401758eb7932SJeff Layton osdc->osdmap->epoch < osdc->epoch_barrier) 401842c1b124SIlya Dryomov maybe_request_map(osdc); 4019cd634fb6SSage Weil 40205aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 402142c1b124SIlya Dryomov 4022fc36d0a4SJeff Layton ceph_osdc_abort_on_full(osdc); 402342c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 402442c1b124SIlya Dryomov osdc->osdmap->epoch); 40255aea3dcdSIlya Dryomov up_write(&osdc->lock); 40263d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 40273d14c5d2SYehuda Sadeh return; 40283d14c5d2SYehuda Sadeh 40293d14c5d2SYehuda Sadeh bad: 40303d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 40313d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 40325aea3dcdSIlya Dryomov up_write(&osdc->lock); 40335aea3dcdSIlya Dryomov } 40345aea3dcdSIlya Dryomov 40355aea3dcdSIlya Dryomov /* 40365aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 40375aea3dcdSIlya Dryomov */ 40385aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 40395aea3dcdSIlya Dryomov { 40405aea3dcdSIlya Dryomov struct rb_node *n; 40415aea3dcdSIlya Dryomov 4042a02a946dSIlya Dryomov clear_backoffs(osd); 4043a02a946dSIlya Dryomov 4044922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 40455aea3dcdSIlya Dryomov struct ceph_osd_request *req = 40465aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 40475aea3dcdSIlya Dryomov 4048922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 4049922dab61SIlya Dryomov 40505aea3dcdSIlya Dryomov if (!req->r_linger) { 40515aea3dcdSIlya Dryomov if (!req->r_t.paused) 40525aea3dcdSIlya Dryomov send_request(req); 4053922dab61SIlya Dryomov } else { 4054922dab61SIlya Dryomov cancel_linger_request(req); 40555aea3dcdSIlya Dryomov } 40565aea3dcdSIlya Dryomov } 4057922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 4058922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 4059922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 4060922dab61SIlya Dryomov 4061922dab61SIlya Dryomov send_linger(lreq); 4062922dab61SIlya Dryomov } 40635aea3dcdSIlya Dryomov } 40645aea3dcdSIlya Dryomov 40655aea3dcdSIlya Dryomov /* 40665aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 40675aea3dcdSIlya Dryomov */ 40685aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 40695aea3dcdSIlya Dryomov { 40705aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 40715aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 40725aea3dcdSIlya Dryomov 40735aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 40745aea3dcdSIlya Dryomov 40755aea3dcdSIlya Dryomov down_write(&osdc->lock); 40765aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 40775aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 40785aea3dcdSIlya Dryomov goto out_unlock; 40795aea3dcdSIlya Dryomov } 40805aea3dcdSIlya Dryomov 40815aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 40825aea3dcdSIlya Dryomov kick_osd_requests(osd); 40835aea3dcdSIlya Dryomov maybe_request_map(osdc); 40845aea3dcdSIlya Dryomov 40855aea3dcdSIlya Dryomov out_unlock: 40865aea3dcdSIlya Dryomov up_write(&osdc->lock); 40873d14c5d2SYehuda Sadeh } 40883d14c5d2SYehuda Sadeh 4089a02a946dSIlya Dryomov struct MOSDBackoff { 4090a02a946dSIlya Dryomov struct ceph_spg spgid; 4091a02a946dSIlya Dryomov u32 map_epoch; 4092a02a946dSIlya Dryomov u8 op; 4093a02a946dSIlya Dryomov u64 id; 4094a02a946dSIlya Dryomov struct ceph_hobject_id *begin; 4095a02a946dSIlya Dryomov struct ceph_hobject_id *end; 4096a02a946dSIlya Dryomov }; 4097a02a946dSIlya Dryomov 4098a02a946dSIlya Dryomov static int decode_MOSDBackoff(const struct ceph_msg *msg, struct MOSDBackoff *m) 4099a02a946dSIlya Dryomov { 4100a02a946dSIlya Dryomov void *p = msg->front.iov_base; 4101a02a946dSIlya Dryomov void *const end = p + msg->front.iov_len; 4102a02a946dSIlya Dryomov u8 struct_v; 4103a02a946dSIlya Dryomov u32 struct_len; 4104a02a946dSIlya Dryomov int ret; 4105a02a946dSIlya Dryomov 4106a02a946dSIlya Dryomov ret = ceph_start_decoding(&p, end, 1, "spg_t", &struct_v, &struct_len); 4107a02a946dSIlya Dryomov if (ret) 4108a02a946dSIlya Dryomov return ret; 4109a02a946dSIlya Dryomov 4110a02a946dSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->spgid.pgid); 4111a02a946dSIlya Dryomov if (ret) 4112a02a946dSIlya Dryomov return ret; 4113a02a946dSIlya Dryomov 4114a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->spgid.shard, e_inval); 4115a02a946dSIlya Dryomov ceph_decode_32_safe(&p, end, m->map_epoch, e_inval); 4116a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->op, e_inval); 4117a02a946dSIlya Dryomov ceph_decode_64_safe(&p, end, m->id, e_inval); 4118a02a946dSIlya Dryomov 4119a02a946dSIlya Dryomov m->begin = kzalloc(sizeof(*m->begin), GFP_NOIO); 4120a02a946dSIlya Dryomov if (!m->begin) 4121a02a946dSIlya Dryomov return -ENOMEM; 4122a02a946dSIlya Dryomov 4123a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->begin); 4124a02a946dSIlya Dryomov if (ret) { 4125a02a946dSIlya Dryomov free_hoid(m->begin); 4126a02a946dSIlya Dryomov return ret; 4127a02a946dSIlya Dryomov } 4128a02a946dSIlya Dryomov 4129a02a946dSIlya Dryomov m->end = kzalloc(sizeof(*m->end), GFP_NOIO); 4130a02a946dSIlya Dryomov if (!m->end) { 4131a02a946dSIlya Dryomov free_hoid(m->begin); 4132a02a946dSIlya Dryomov return -ENOMEM; 4133a02a946dSIlya Dryomov } 4134a02a946dSIlya Dryomov 4135a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->end); 4136a02a946dSIlya Dryomov if (ret) { 4137a02a946dSIlya Dryomov free_hoid(m->begin); 4138a02a946dSIlya Dryomov free_hoid(m->end); 4139a02a946dSIlya Dryomov return ret; 4140a02a946dSIlya Dryomov } 4141a02a946dSIlya Dryomov 4142a02a946dSIlya Dryomov return 0; 4143a02a946dSIlya Dryomov 4144a02a946dSIlya Dryomov e_inval: 4145a02a946dSIlya Dryomov return -EINVAL; 4146a02a946dSIlya Dryomov } 4147a02a946dSIlya Dryomov 4148a02a946dSIlya Dryomov static struct ceph_msg *create_backoff_message( 4149a02a946dSIlya Dryomov const struct ceph_osd_backoff *backoff, 4150a02a946dSIlya Dryomov u32 map_epoch) 4151a02a946dSIlya Dryomov { 4152a02a946dSIlya Dryomov struct ceph_msg *msg; 4153a02a946dSIlya Dryomov void *p, *end; 4154a02a946dSIlya Dryomov int msg_size; 4155a02a946dSIlya Dryomov 4156a02a946dSIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 4157a02a946dSIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 4158a02a946dSIlya Dryomov msg_size += 4 + 1 + 8; /* map_epoch, op, id */ 4159a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4160a02a946dSIlya Dryomov hoid_encoding_size(backoff->begin); 4161a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4162a02a946dSIlya Dryomov hoid_encoding_size(backoff->end); 4163a02a946dSIlya Dryomov 4164a02a946dSIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_BACKOFF, msg_size, GFP_NOIO, true); 4165a02a946dSIlya Dryomov if (!msg) 4166a02a946dSIlya Dryomov return NULL; 4167a02a946dSIlya Dryomov 4168a02a946dSIlya Dryomov p = msg->front.iov_base; 4169a02a946dSIlya Dryomov end = p + msg->front_alloc_len; 4170a02a946dSIlya Dryomov 4171a02a946dSIlya Dryomov encode_spgid(&p, &backoff->spgid); 4172a02a946dSIlya Dryomov ceph_encode_32(&p, map_epoch); 4173a02a946dSIlya Dryomov ceph_encode_8(&p, CEPH_OSD_BACKOFF_OP_ACK_BLOCK); 4174a02a946dSIlya Dryomov ceph_encode_64(&p, backoff->id); 4175a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->begin); 4176a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->end); 4177a02a946dSIlya Dryomov BUG_ON(p != end); 4178a02a946dSIlya Dryomov 4179a02a946dSIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 4180a02a946dSIlya Dryomov msg->hdr.version = cpu_to_le16(1); /* MOSDBackoff v1 */ 4181a02a946dSIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 4182a02a946dSIlya Dryomov 4183a02a946dSIlya Dryomov return msg; 4184a02a946dSIlya Dryomov } 4185a02a946dSIlya Dryomov 4186a02a946dSIlya Dryomov static void handle_backoff_block(struct ceph_osd *osd, struct MOSDBackoff *m) 4187a02a946dSIlya Dryomov { 4188a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4189a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4190a02a946dSIlya Dryomov struct ceph_msg *msg; 4191a02a946dSIlya Dryomov 4192a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4193a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4194a02a946dSIlya Dryomov 4195a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &m->spgid); 4196a02a946dSIlya Dryomov if (!spg) { 4197a02a946dSIlya Dryomov spg = alloc_spg_mapping(); 4198a02a946dSIlya Dryomov if (!spg) { 4199a02a946dSIlya Dryomov pr_err("%s failed to allocate spg\n", __func__); 4200a02a946dSIlya Dryomov return; 4201a02a946dSIlya Dryomov } 4202a02a946dSIlya Dryomov spg->spgid = m->spgid; /* struct */ 4203a02a946dSIlya Dryomov insert_spg_mapping(&osd->o_backoff_mappings, spg); 4204a02a946dSIlya Dryomov } 4205a02a946dSIlya Dryomov 4206a02a946dSIlya Dryomov backoff = alloc_backoff(); 4207a02a946dSIlya Dryomov if (!backoff) { 4208a02a946dSIlya Dryomov pr_err("%s failed to allocate backoff\n", __func__); 4209a02a946dSIlya Dryomov return; 4210a02a946dSIlya Dryomov } 4211a02a946dSIlya Dryomov backoff->spgid = m->spgid; /* struct */ 4212a02a946dSIlya Dryomov backoff->id = m->id; 4213a02a946dSIlya Dryomov backoff->begin = m->begin; 4214a02a946dSIlya Dryomov m->begin = NULL; /* backoff now owns this */ 4215a02a946dSIlya Dryomov backoff->end = m->end; 4216a02a946dSIlya Dryomov m->end = NULL; /* ditto */ 4217a02a946dSIlya Dryomov 4218a02a946dSIlya Dryomov insert_backoff(&spg->backoffs, backoff); 4219a02a946dSIlya Dryomov insert_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4220a02a946dSIlya Dryomov 4221a02a946dSIlya Dryomov /* 4222a02a946dSIlya Dryomov * Ack with original backoff's epoch so that the OSD can 4223a02a946dSIlya Dryomov * discard this if there was a PG split. 4224a02a946dSIlya Dryomov */ 4225a02a946dSIlya Dryomov msg = create_backoff_message(backoff, m->map_epoch); 4226a02a946dSIlya Dryomov if (!msg) { 4227a02a946dSIlya Dryomov pr_err("%s failed to allocate msg\n", __func__); 4228a02a946dSIlya Dryomov return; 4229a02a946dSIlya Dryomov } 4230a02a946dSIlya Dryomov ceph_con_send(&osd->o_con, msg); 4231a02a946dSIlya Dryomov } 4232a02a946dSIlya Dryomov 4233a02a946dSIlya Dryomov static bool target_contained_by(const struct ceph_osd_request_target *t, 4234a02a946dSIlya Dryomov const struct ceph_hobject_id *begin, 4235a02a946dSIlya Dryomov const struct ceph_hobject_id *end) 4236a02a946dSIlya Dryomov { 4237a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 4238a02a946dSIlya Dryomov int cmp; 4239a02a946dSIlya Dryomov 4240a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, t); 4241a02a946dSIlya Dryomov cmp = hoid_compare(&hoid, begin); 4242a02a946dSIlya Dryomov return !cmp || (cmp > 0 && hoid_compare(&hoid, end) < 0); 4243a02a946dSIlya Dryomov } 4244a02a946dSIlya Dryomov 4245a02a946dSIlya Dryomov static void handle_backoff_unblock(struct ceph_osd *osd, 4246a02a946dSIlya Dryomov const struct MOSDBackoff *m) 4247a02a946dSIlya Dryomov { 4248a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4249a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4250a02a946dSIlya Dryomov struct rb_node *n; 4251a02a946dSIlya Dryomov 4252a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4253a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4254a02a946dSIlya Dryomov 4255a02a946dSIlya Dryomov backoff = lookup_backoff_by_id(&osd->o_backoffs_by_id, m->id); 4256a02a946dSIlya Dryomov if (!backoff) { 4257a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu backoff dne\n", 4258a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4259a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4260a02a946dSIlya Dryomov return; 4261a02a946dSIlya Dryomov } 4262a02a946dSIlya Dryomov 4263a02a946dSIlya Dryomov if (hoid_compare(backoff->begin, m->begin) && 4264a02a946dSIlya Dryomov hoid_compare(backoff->end, m->end)) { 4265a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu bad range?\n", 4266a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4267a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4268a02a946dSIlya Dryomov /* unblock it anyway... */ 4269a02a946dSIlya Dryomov } 4270a02a946dSIlya Dryomov 4271a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &backoff->spgid); 4272a02a946dSIlya Dryomov BUG_ON(!spg); 4273a02a946dSIlya Dryomov 4274a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 4275a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4276a02a946dSIlya Dryomov free_backoff(backoff); 4277a02a946dSIlya Dryomov 4278a02a946dSIlya Dryomov if (RB_EMPTY_ROOT(&spg->backoffs)) { 4279a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 4280a02a946dSIlya Dryomov free_spg_mapping(spg); 4281a02a946dSIlya Dryomov } 4282a02a946dSIlya Dryomov 4283a02a946dSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 4284a02a946dSIlya Dryomov struct ceph_osd_request *req = 4285a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 4286a02a946dSIlya Dryomov 4287a02a946dSIlya Dryomov if (!ceph_spg_compare(&req->r_t.spgid, &m->spgid)) { 4288a02a946dSIlya Dryomov /* 4289a02a946dSIlya Dryomov * Match against @m, not @backoff -- the PG may 4290a02a946dSIlya Dryomov * have split on the OSD. 4291a02a946dSIlya Dryomov */ 4292a02a946dSIlya Dryomov if (target_contained_by(&req->r_t, m->begin, m->end)) { 4293a02a946dSIlya Dryomov /* 4294a02a946dSIlya Dryomov * If no other installed backoff applies, 4295a02a946dSIlya Dryomov * resend. 4296a02a946dSIlya Dryomov */ 4297a02a946dSIlya Dryomov send_request(req); 4298a02a946dSIlya Dryomov } 4299a02a946dSIlya Dryomov } 4300a02a946dSIlya Dryomov } 4301a02a946dSIlya Dryomov } 4302a02a946dSIlya Dryomov 4303a02a946dSIlya Dryomov static void handle_backoff(struct ceph_osd *osd, struct ceph_msg *msg) 4304a02a946dSIlya Dryomov { 4305a02a946dSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 4306a02a946dSIlya Dryomov struct MOSDBackoff m; 4307a02a946dSIlya Dryomov int ret; 4308a02a946dSIlya Dryomov 4309a02a946dSIlya Dryomov down_read(&osdc->lock); 4310a02a946dSIlya Dryomov if (!osd_registered(osd)) { 4311a02a946dSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 4312a02a946dSIlya Dryomov up_read(&osdc->lock); 4313a02a946dSIlya Dryomov return; 4314a02a946dSIlya Dryomov } 4315a02a946dSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 4316a02a946dSIlya Dryomov 4317a02a946dSIlya Dryomov mutex_lock(&osd->lock); 4318a02a946dSIlya Dryomov ret = decode_MOSDBackoff(msg, &m); 4319a02a946dSIlya Dryomov if (ret) { 4320a02a946dSIlya Dryomov pr_err("failed to decode MOSDBackoff: %d\n", ret); 4321a02a946dSIlya Dryomov ceph_msg_dump(msg); 4322a02a946dSIlya Dryomov goto out_unlock; 4323a02a946dSIlya Dryomov } 4324a02a946dSIlya Dryomov 4325a02a946dSIlya Dryomov switch (m.op) { 4326a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_BLOCK: 4327a02a946dSIlya Dryomov handle_backoff_block(osd, &m); 4328a02a946dSIlya Dryomov break; 4329a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_UNBLOCK: 4330a02a946dSIlya Dryomov handle_backoff_unblock(osd, &m); 4331a02a946dSIlya Dryomov break; 4332a02a946dSIlya Dryomov default: 4333a02a946dSIlya Dryomov pr_err("%s osd%d unknown op %d\n", __func__, osd->o_osd, m.op); 4334a02a946dSIlya Dryomov } 4335a02a946dSIlya Dryomov 4336a02a946dSIlya Dryomov free_hoid(m.begin); 4337a02a946dSIlya Dryomov free_hoid(m.end); 4338a02a946dSIlya Dryomov 4339a02a946dSIlya Dryomov out_unlock: 4340a02a946dSIlya Dryomov mutex_unlock(&osd->lock); 4341a02a946dSIlya Dryomov up_read(&osdc->lock); 4342a02a946dSIlya Dryomov } 4343a02a946dSIlya Dryomov 43443d14c5d2SYehuda Sadeh /* 4345a40c4f10SYehuda Sadeh * Process osd watch notifications 4346a40c4f10SYehuda Sadeh */ 43473c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 43483c663bbdSAlex Elder struct ceph_msg *msg) 4349a40c4f10SYehuda Sadeh { 4350922dab61SIlya Dryomov void *p = msg->front.iov_base; 4351922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 4352922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4353922dab61SIlya Dryomov struct linger_work *lwork; 4354922dab61SIlya Dryomov u8 proto_ver, opcode; 4355922dab61SIlya Dryomov u64 cookie, notify_id; 4356922dab61SIlya Dryomov u64 notifier_id = 0; 435719079203SIlya Dryomov s32 return_code = 0; 4358922dab61SIlya Dryomov void *payload = NULL; 4359922dab61SIlya Dryomov u32 payload_len = 0; 4360a40c4f10SYehuda Sadeh 4361a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 4362a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 4363a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 4364922dab61SIlya Dryomov p += 8; /* skip ver */ 4365a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 4366a40c4f10SYehuda Sadeh 4367922dab61SIlya Dryomov if (proto_ver >= 1) { 4368922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 4369922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 4370922dab61SIlya Dryomov payload = p; 4371922dab61SIlya Dryomov p += payload_len; 4372a40c4f10SYehuda Sadeh } 4373a40c4f10SYehuda Sadeh 4374922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 437519079203SIlya Dryomov ceph_decode_32_safe(&p, end, return_code, bad); 4376922dab61SIlya Dryomov 4377922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 4378922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 4379922dab61SIlya Dryomov 4380922dab61SIlya Dryomov down_read(&osdc->lock); 4381922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 4382922dab61SIlya Dryomov if (!lreq) { 4383922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 4384922dab61SIlya Dryomov cookie); 4385922dab61SIlya Dryomov goto out_unlock_osdc; 4386922dab61SIlya Dryomov } 4387922dab61SIlya Dryomov 4388922dab61SIlya Dryomov mutex_lock(&lreq->lock); 438919079203SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, 439019079203SIlya Dryomov opcode, cookie, lreq, lreq->is_watch); 4391922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 4392922dab61SIlya Dryomov if (!lreq->last_error) { 4393922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 4394922dab61SIlya Dryomov queue_watch_error(lreq); 4395922dab61SIlya Dryomov } 439619079203SIlya Dryomov } else if (!lreq->is_watch) { 439719079203SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ 439819079203SIlya Dryomov if (lreq->notify_id && lreq->notify_id != notify_id) { 439919079203SIlya Dryomov dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, 440019079203SIlya Dryomov lreq->notify_id, notify_id); 440119079203SIlya Dryomov } else if (!completion_done(&lreq->notify_finish_wait)) { 440219079203SIlya Dryomov struct ceph_msg_data *data = 44030d9c1ab3SIlya Dryomov msg->num_data_items ? &msg->data[0] : NULL; 440419079203SIlya Dryomov 440519079203SIlya Dryomov if (data) { 440619079203SIlya Dryomov if (lreq->preply_pages) { 440719079203SIlya Dryomov WARN_ON(data->type != 440819079203SIlya Dryomov CEPH_MSG_DATA_PAGES); 440919079203SIlya Dryomov *lreq->preply_pages = data->pages; 441019079203SIlya Dryomov *lreq->preply_len = data->length; 441119079203SIlya Dryomov } else { 441219079203SIlya Dryomov ceph_release_page_vector(data->pages, 441319079203SIlya Dryomov calc_pages_for(0, data->length)); 441419079203SIlya Dryomov } 441519079203SIlya Dryomov } 441619079203SIlya Dryomov lreq->notify_finish_error = return_code; 441719079203SIlya Dryomov complete_all(&lreq->notify_finish_wait); 441819079203SIlya Dryomov } 4419922dab61SIlya Dryomov } else { 4420922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 4421922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 4422922dab61SIlya Dryomov if (!lwork) { 4423922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 4424922dab61SIlya Dryomov goto out_unlock_lreq; 4425922dab61SIlya Dryomov } 4426922dab61SIlya Dryomov 4427922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 4428922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 4429922dab61SIlya Dryomov lwork->notify.payload = payload; 4430922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 4431922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 4432922dab61SIlya Dryomov lwork_queue(lwork); 4433922dab61SIlya Dryomov } 4434922dab61SIlya Dryomov 4435922dab61SIlya Dryomov out_unlock_lreq: 4436922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 4437922dab61SIlya Dryomov out_unlock_osdc: 4438922dab61SIlya Dryomov up_read(&osdc->lock); 4439a40c4f10SYehuda Sadeh return; 4440a40c4f10SYehuda Sadeh 4441a40c4f10SYehuda Sadeh bad: 4442a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 4443a40c4f10SYehuda Sadeh } 4444a40c4f10SYehuda Sadeh 4445a40c4f10SYehuda Sadeh /* 44463d14c5d2SYehuda Sadeh * Register request, send initial attempt. 44473d14c5d2SYehuda Sadeh */ 44483d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 44493d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 44503d14c5d2SYehuda Sadeh bool nofail) 44513d14c5d2SYehuda Sadeh { 44525aea3dcdSIlya Dryomov down_read(&osdc->lock); 44535aea3dcdSIlya Dryomov submit_request(req, false); 44545aea3dcdSIlya Dryomov up_read(&osdc->lock); 44553d14c5d2SYehuda Sadeh 44565aea3dcdSIlya Dryomov return 0; 44573d14c5d2SYehuda Sadeh } 44583d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 44593d14c5d2SYehuda Sadeh 44603d14c5d2SYehuda Sadeh /* 4461c297eb42SIlya Dryomov * Unregister a registered request. The request is not completed: 4462c297eb42SIlya Dryomov * ->r_result isn't set and __complete_request() isn't called. 4463c9f9b93dSIlya Dryomov */ 4464c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 4465c9f9b93dSIlya Dryomov { 4466c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 4467c9f9b93dSIlya Dryomov 44685aea3dcdSIlya Dryomov down_write(&osdc->lock); 44695aea3dcdSIlya Dryomov if (req->r_osd) 44705aea3dcdSIlya Dryomov cancel_request(req); 44715aea3dcdSIlya Dryomov up_write(&osdc->lock); 4472c9f9b93dSIlya Dryomov } 4473c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 4474c9f9b93dSIlya Dryomov 4475c9f9b93dSIlya Dryomov /* 447642b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 447742b06965SIlya Dryomov */ 447842b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 447942b06965SIlya Dryomov unsigned long timeout) 448042b06965SIlya Dryomov { 448142b06965SIlya Dryomov long left; 448242b06965SIlya Dryomov 448342b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 44840e76abf2SYan, Zheng left = wait_for_completion_killable_timeout(&req->r_completion, 448542b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 448642b06965SIlya Dryomov if (left <= 0) { 448742b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 448842b06965SIlya Dryomov ceph_osdc_cancel_request(req); 448942b06965SIlya Dryomov } else { 449042b06965SIlya Dryomov left = req->r_result; /* completed */ 449142b06965SIlya Dryomov } 449242b06965SIlya Dryomov 449342b06965SIlya Dryomov return left; 449442b06965SIlya Dryomov } 449542b06965SIlya Dryomov 449642b06965SIlya Dryomov /* 44973d14c5d2SYehuda Sadeh * wait for a request to complete 44983d14c5d2SYehuda Sadeh */ 44993d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 45003d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 45013d14c5d2SYehuda Sadeh { 450242b06965SIlya Dryomov return wait_request_timeout(req, 0); 45033d14c5d2SYehuda Sadeh } 45043d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 45053d14c5d2SYehuda Sadeh 45063d14c5d2SYehuda Sadeh /* 45073d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 45083d14c5d2SYehuda Sadeh */ 45093d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 45103d14c5d2SYehuda Sadeh { 45115aea3dcdSIlya Dryomov struct rb_node *n, *p; 45125aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 45133d14c5d2SYehuda Sadeh 45145aea3dcdSIlya Dryomov again: 45155aea3dcdSIlya Dryomov down_read(&osdc->lock); 45165aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 45175aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 45185aea3dcdSIlya Dryomov 45195aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 45205aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 45215aea3dcdSIlya Dryomov struct ceph_osd_request *req = 45225aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 45235aea3dcdSIlya Dryomov 45243d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 45253d14c5d2SYehuda Sadeh break; 45263d14c5d2SYehuda Sadeh 45275aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 45283d14c5d2SYehuda Sadeh continue; 45293d14c5d2SYehuda Sadeh 45303d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 45315aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 45325aea3dcdSIlya Dryomov up_read(&osdc->lock); 45335aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 45345aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 4535b18b9550SIlya Dryomov wait_for_completion(&req->r_completion); 45363d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 45375aea3dcdSIlya Dryomov goto again; 45383d14c5d2SYehuda Sadeh } 45395aea3dcdSIlya Dryomov 45405aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 45415aea3dcdSIlya Dryomov } 45425aea3dcdSIlya Dryomov 45435aea3dcdSIlya Dryomov up_read(&osdc->lock); 45445aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 45453d14c5d2SYehuda Sadeh } 45463d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 45473d14c5d2SYehuda Sadeh 4548922dab61SIlya Dryomov static struct ceph_osd_request * 4549922dab61SIlya Dryomov alloc_linger_request(struct ceph_osd_linger_request *lreq) 4550922dab61SIlya Dryomov { 4551922dab61SIlya Dryomov struct ceph_osd_request *req; 4552922dab61SIlya Dryomov 4553922dab61SIlya Dryomov req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); 4554922dab61SIlya Dryomov if (!req) 4555922dab61SIlya Dryomov return NULL; 4556922dab61SIlya Dryomov 4557922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4558922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 4559922dab61SIlya Dryomov return req; 4560922dab61SIlya Dryomov } 4561922dab61SIlya Dryomov 456239e58c34SIlya Dryomov static struct ceph_osd_request * 456339e58c34SIlya Dryomov alloc_watch_request(struct ceph_osd_linger_request *lreq, u8 watch_opcode) 456439e58c34SIlya Dryomov { 456539e58c34SIlya Dryomov struct ceph_osd_request *req; 456639e58c34SIlya Dryomov 456739e58c34SIlya Dryomov req = alloc_linger_request(lreq); 456839e58c34SIlya Dryomov if (!req) 456939e58c34SIlya Dryomov return NULL; 457039e58c34SIlya Dryomov 457139e58c34SIlya Dryomov /* 457239e58c34SIlya Dryomov * Pass 0 for cookie because we don't know it yet, it will be 457339e58c34SIlya Dryomov * filled in by linger_submit(). 457439e58c34SIlya Dryomov */ 457539e58c34SIlya Dryomov osd_req_op_watch_init(req, 0, 0, watch_opcode); 457626f887e0SIlya Dryomov 457726f887e0SIlya Dryomov if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { 457826f887e0SIlya Dryomov ceph_osdc_put_request(req); 457926f887e0SIlya Dryomov return NULL; 458026f887e0SIlya Dryomov } 458126f887e0SIlya Dryomov 458239e58c34SIlya Dryomov return req; 458339e58c34SIlya Dryomov } 458439e58c34SIlya Dryomov 4585922dab61SIlya Dryomov /* 4586922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 4587922dab61SIlya Dryomov */ 4588922dab61SIlya Dryomov struct ceph_osd_linger_request * 4589922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 4590922dab61SIlya Dryomov struct ceph_object_id *oid, 4591922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4592922dab61SIlya Dryomov rados_watchcb2_t wcb, 4593922dab61SIlya Dryomov rados_watcherrcb_t errcb, 4594922dab61SIlya Dryomov void *data) 4595922dab61SIlya Dryomov { 4596922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4597922dab61SIlya Dryomov int ret; 4598922dab61SIlya Dryomov 4599922dab61SIlya Dryomov lreq = linger_alloc(osdc); 4600922dab61SIlya Dryomov if (!lreq) 4601922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 4602922dab61SIlya Dryomov 460319079203SIlya Dryomov lreq->is_watch = true; 4604922dab61SIlya Dryomov lreq->wcb = wcb; 4605922dab61SIlya Dryomov lreq->errcb = errcb; 4606922dab61SIlya Dryomov lreq->data = data; 4607b07d3c4bSIlya Dryomov lreq->watch_valid_thru = jiffies; 4608922dab61SIlya Dryomov 4609922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 4610922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 461154ea0046SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE; 4612fac02ddfSArnd Bergmann ktime_get_real_ts64(&lreq->mtime); 4613922dab61SIlya Dryomov 461439e58c34SIlya Dryomov lreq->reg_req = alloc_watch_request(lreq, CEPH_OSD_WATCH_OP_WATCH); 4615922dab61SIlya Dryomov if (!lreq->reg_req) { 4616922dab61SIlya Dryomov ret = -ENOMEM; 4617922dab61SIlya Dryomov goto err_put_lreq; 4618922dab61SIlya Dryomov } 4619922dab61SIlya Dryomov 462039e58c34SIlya Dryomov lreq->ping_req = alloc_watch_request(lreq, CEPH_OSD_WATCH_OP_PING); 4621922dab61SIlya Dryomov if (!lreq->ping_req) { 4622922dab61SIlya Dryomov ret = -ENOMEM; 4623922dab61SIlya Dryomov goto err_put_lreq; 4624922dab61SIlya Dryomov } 4625922dab61SIlya Dryomov 462681c65213SIlya Dryomov linger_submit(lreq); 4627922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 4628922dab61SIlya Dryomov if (ret) { 4629922dab61SIlya Dryomov linger_cancel(lreq); 4630922dab61SIlya Dryomov goto err_put_lreq; 4631922dab61SIlya Dryomov } 4632922dab61SIlya Dryomov 4633922dab61SIlya Dryomov return lreq; 4634922dab61SIlya Dryomov 4635922dab61SIlya Dryomov err_put_lreq: 4636922dab61SIlya Dryomov linger_put(lreq); 4637922dab61SIlya Dryomov return ERR_PTR(ret); 4638922dab61SIlya Dryomov } 4639922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 4640922dab61SIlya Dryomov 4641922dab61SIlya Dryomov /* 4642922dab61SIlya Dryomov * Releases a ref. 4643922dab61SIlya Dryomov * 4644922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 4645922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 4646922dab61SIlya Dryomov * with mount_timeout"). 4647922dab61SIlya Dryomov */ 4648922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 4649922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 4650922dab61SIlya Dryomov { 4651922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 4652922dab61SIlya Dryomov struct ceph_osd_request *req; 4653922dab61SIlya Dryomov int ret; 4654922dab61SIlya Dryomov 4655922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4656922dab61SIlya Dryomov if (!req) 4657922dab61SIlya Dryomov return -ENOMEM; 4658922dab61SIlya Dryomov 4659922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4660922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 466154ea0046SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE; 4662fac02ddfSArnd Bergmann ktime_get_real_ts64(&req->r_mtime); 4663922dab61SIlya Dryomov osd_req_op_watch_init(req, 0, lreq->linger_id, 4664922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_UNWATCH); 4665922dab61SIlya Dryomov 4666922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4667922dab61SIlya Dryomov if (ret) 4668922dab61SIlya Dryomov goto out_put_req; 4669922dab61SIlya Dryomov 4670922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 4671922dab61SIlya Dryomov linger_cancel(lreq); 4672922dab61SIlya Dryomov linger_put(lreq); 4673922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 4674922dab61SIlya Dryomov 4675922dab61SIlya Dryomov out_put_req: 4676922dab61SIlya Dryomov ceph_osdc_put_request(req); 4677922dab61SIlya Dryomov return ret; 4678922dab61SIlya Dryomov } 4679922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 4680922dab61SIlya Dryomov 4681922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 4682922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 46836d54228fSIlya Dryomov u32 payload_len) 4684922dab61SIlya Dryomov { 4685922dab61SIlya Dryomov struct ceph_osd_req_op *op; 4686922dab61SIlya Dryomov struct ceph_pagelist *pl; 4687922dab61SIlya Dryomov int ret; 4688922dab61SIlya Dryomov 4689922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 4690922dab61SIlya Dryomov 469133165d47SIlya Dryomov pl = ceph_pagelist_alloc(GFP_NOIO); 4692922dab61SIlya Dryomov if (!pl) 4693922dab61SIlya Dryomov return -ENOMEM; 4694922dab61SIlya Dryomov 4695922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 4696922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 4697922dab61SIlya Dryomov if (payload) { 4698922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 4699922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 4700922dab61SIlya Dryomov } else { 4701922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 4702922dab61SIlya Dryomov } 4703922dab61SIlya Dryomov if (ret) { 4704922dab61SIlya Dryomov ceph_pagelist_release(pl); 4705922dab61SIlya Dryomov return -ENOMEM; 4706922dab61SIlya Dryomov } 4707922dab61SIlya Dryomov 4708922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 4709922dab61SIlya Dryomov op->indata_len = pl->length; 4710922dab61SIlya Dryomov return 0; 4711922dab61SIlya Dryomov } 4712922dab61SIlya Dryomov 4713922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 4714922dab61SIlya Dryomov struct ceph_object_id *oid, 4715922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4716922dab61SIlya Dryomov u64 notify_id, 4717922dab61SIlya Dryomov u64 cookie, 4718922dab61SIlya Dryomov void *payload, 47196d54228fSIlya Dryomov u32 payload_len) 4720922dab61SIlya Dryomov { 4721922dab61SIlya Dryomov struct ceph_osd_request *req; 4722922dab61SIlya Dryomov int ret; 4723922dab61SIlya Dryomov 4724922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4725922dab61SIlya Dryomov if (!req) 4726922dab61SIlya Dryomov return -ENOMEM; 4727922dab61SIlya Dryomov 4728922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 4729922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 4730922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 4731922dab61SIlya Dryomov 473226f887e0SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 473326f887e0SIlya Dryomov payload_len); 4734922dab61SIlya Dryomov if (ret) 4735922dab61SIlya Dryomov goto out_put_req; 4736922dab61SIlya Dryomov 473726f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4738922dab61SIlya Dryomov if (ret) 4739922dab61SIlya Dryomov goto out_put_req; 4740922dab61SIlya Dryomov 4741922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 4742922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 4743922dab61SIlya Dryomov 4744922dab61SIlya Dryomov out_put_req: 4745922dab61SIlya Dryomov ceph_osdc_put_request(req); 4746922dab61SIlya Dryomov return ret; 4747922dab61SIlya Dryomov } 4748922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 4749922dab61SIlya Dryomov 475019079203SIlya Dryomov static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, 475119079203SIlya Dryomov u64 cookie, u32 prot_ver, u32 timeout, 47526d54228fSIlya Dryomov void *payload, u32 payload_len) 475319079203SIlya Dryomov { 475419079203SIlya Dryomov struct ceph_osd_req_op *op; 475519079203SIlya Dryomov struct ceph_pagelist *pl; 475619079203SIlya Dryomov int ret; 475719079203SIlya Dryomov 475819079203SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); 475919079203SIlya Dryomov op->notify.cookie = cookie; 476019079203SIlya Dryomov 476133165d47SIlya Dryomov pl = ceph_pagelist_alloc(GFP_NOIO); 476219079203SIlya Dryomov if (!pl) 476319079203SIlya Dryomov return -ENOMEM; 476419079203SIlya Dryomov 476519079203SIlya Dryomov ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ 476619079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, timeout); 476719079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 476819079203SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 476919079203SIlya Dryomov if (ret) { 477019079203SIlya Dryomov ceph_pagelist_release(pl); 477119079203SIlya Dryomov return -ENOMEM; 477219079203SIlya Dryomov } 477319079203SIlya Dryomov 477419079203SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify.request_data, pl); 477519079203SIlya Dryomov op->indata_len = pl->length; 477619079203SIlya Dryomov return 0; 477719079203SIlya Dryomov } 477819079203SIlya Dryomov 477919079203SIlya Dryomov /* 478019079203SIlya Dryomov * @timeout: in seconds 478119079203SIlya Dryomov * 478219079203SIlya Dryomov * @preply_{pages,len} are initialized both on success and error. 478319079203SIlya Dryomov * The caller is responsible for: 478419079203SIlya Dryomov * 478519079203SIlya Dryomov * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) 478619079203SIlya Dryomov */ 478719079203SIlya Dryomov int ceph_osdc_notify(struct ceph_osd_client *osdc, 478819079203SIlya Dryomov struct ceph_object_id *oid, 478919079203SIlya Dryomov struct ceph_object_locator *oloc, 479019079203SIlya Dryomov void *payload, 47916d54228fSIlya Dryomov u32 payload_len, 479219079203SIlya Dryomov u32 timeout, 479319079203SIlya Dryomov struct page ***preply_pages, 479419079203SIlya Dryomov size_t *preply_len) 479519079203SIlya Dryomov { 479619079203SIlya Dryomov struct ceph_osd_linger_request *lreq; 479719079203SIlya Dryomov struct page **pages; 479819079203SIlya Dryomov int ret; 479919079203SIlya Dryomov 480019079203SIlya Dryomov WARN_ON(!timeout); 480119079203SIlya Dryomov if (preply_pages) { 480219079203SIlya Dryomov *preply_pages = NULL; 480319079203SIlya Dryomov *preply_len = 0; 480419079203SIlya Dryomov } 480519079203SIlya Dryomov 480619079203SIlya Dryomov lreq = linger_alloc(osdc); 480719079203SIlya Dryomov if (!lreq) 480819079203SIlya Dryomov return -ENOMEM; 480919079203SIlya Dryomov 481019079203SIlya Dryomov lreq->preply_pages = preply_pages; 481119079203SIlya Dryomov lreq->preply_len = preply_len; 481219079203SIlya Dryomov 481319079203SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 481419079203SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 481519079203SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_READ; 481619079203SIlya Dryomov 481719079203SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 481819079203SIlya Dryomov if (!lreq->reg_req) { 481919079203SIlya Dryomov ret = -ENOMEM; 482019079203SIlya Dryomov goto out_put_lreq; 482119079203SIlya Dryomov } 482219079203SIlya Dryomov 482381c65213SIlya Dryomov /* 482481c65213SIlya Dryomov * Pass 0 for cookie because we don't know it yet, it will be 482581c65213SIlya Dryomov * filled in by linger_submit(). 482681c65213SIlya Dryomov */ 482781c65213SIlya Dryomov ret = osd_req_op_notify_init(lreq->reg_req, 0, 0, 1, timeout, 482881c65213SIlya Dryomov payload, payload_len); 482981c65213SIlya Dryomov if (ret) 483081c65213SIlya Dryomov goto out_put_lreq; 483181c65213SIlya Dryomov 483219079203SIlya Dryomov /* for notify_id */ 483319079203SIlya Dryomov pages = ceph_alloc_page_vector(1, GFP_NOIO); 483419079203SIlya Dryomov if (IS_ERR(pages)) { 483519079203SIlya Dryomov ret = PTR_ERR(pages); 483619079203SIlya Dryomov goto out_put_lreq; 483719079203SIlya Dryomov } 483819079203SIlya Dryomov ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, 483919079203SIlya Dryomov response_data), 484019079203SIlya Dryomov pages, PAGE_SIZE, 0, false, true); 484119079203SIlya Dryomov 484226f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(lreq->reg_req, GFP_NOIO); 484326f887e0SIlya Dryomov if (ret) 484426f887e0SIlya Dryomov goto out_put_lreq; 484526f887e0SIlya Dryomov 484681c65213SIlya Dryomov linger_submit(lreq); 484719079203SIlya Dryomov ret = linger_reg_commit_wait(lreq); 484819079203SIlya Dryomov if (!ret) 484919079203SIlya Dryomov ret = linger_notify_finish_wait(lreq); 485019079203SIlya Dryomov else 485119079203SIlya Dryomov dout("lreq %p failed to initiate notify %d\n", lreq, ret); 485219079203SIlya Dryomov 485319079203SIlya Dryomov linger_cancel(lreq); 485419079203SIlya Dryomov out_put_lreq: 485519079203SIlya Dryomov linger_put(lreq); 485619079203SIlya Dryomov return ret; 485719079203SIlya Dryomov } 485819079203SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify); 485919079203SIlya Dryomov 48603d14c5d2SYehuda Sadeh /* 4861b07d3c4bSIlya Dryomov * Return the number of milliseconds since the watch was last 4862b07d3c4bSIlya Dryomov * confirmed, or an error. If there is an error, the watch is no 4863b07d3c4bSIlya Dryomov * longer valid, and should be destroyed with ceph_osdc_unwatch(). 4864b07d3c4bSIlya Dryomov */ 4865b07d3c4bSIlya Dryomov int ceph_osdc_watch_check(struct ceph_osd_client *osdc, 4866b07d3c4bSIlya Dryomov struct ceph_osd_linger_request *lreq) 4867b07d3c4bSIlya Dryomov { 4868b07d3c4bSIlya Dryomov unsigned long stamp, age; 4869b07d3c4bSIlya Dryomov int ret; 4870b07d3c4bSIlya Dryomov 4871b07d3c4bSIlya Dryomov down_read(&osdc->lock); 4872b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 4873b07d3c4bSIlya Dryomov stamp = lreq->watch_valid_thru; 4874b07d3c4bSIlya Dryomov if (!list_empty(&lreq->pending_lworks)) { 4875b07d3c4bSIlya Dryomov struct linger_work *lwork = 4876b07d3c4bSIlya Dryomov list_first_entry(&lreq->pending_lworks, 4877b07d3c4bSIlya Dryomov struct linger_work, 4878b07d3c4bSIlya Dryomov pending_item); 4879b07d3c4bSIlya Dryomov 4880b07d3c4bSIlya Dryomov if (time_before(lwork->queued_stamp, stamp)) 4881b07d3c4bSIlya Dryomov stamp = lwork->queued_stamp; 4882b07d3c4bSIlya Dryomov } 4883b07d3c4bSIlya Dryomov age = jiffies - stamp; 4884b07d3c4bSIlya Dryomov dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, 4885b07d3c4bSIlya Dryomov lreq, lreq->linger_id, age, lreq->last_error); 4886b07d3c4bSIlya Dryomov /* we are truncating to msecs, so return a safe upper bound */ 4887b07d3c4bSIlya Dryomov ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); 4888b07d3c4bSIlya Dryomov 4889b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 4890b07d3c4bSIlya Dryomov up_read(&osdc->lock); 4891b07d3c4bSIlya Dryomov return ret; 4892b07d3c4bSIlya Dryomov } 4893b07d3c4bSIlya Dryomov 4894a4ed38d7SDouglas Fuller static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) 4895a4ed38d7SDouglas Fuller { 4896a4ed38d7SDouglas Fuller u8 struct_v; 4897a4ed38d7SDouglas Fuller u32 struct_len; 4898a4ed38d7SDouglas Fuller int ret; 4899a4ed38d7SDouglas Fuller 4900a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 2, "watch_item_t", 4901a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4902a4ed38d7SDouglas Fuller if (ret) 4903a4ed38d7SDouglas Fuller return ret; 4904a4ed38d7SDouglas Fuller 4905a4ed38d7SDouglas Fuller ceph_decode_copy(p, &item->name, sizeof(item->name)); 4906a4ed38d7SDouglas Fuller item->cookie = ceph_decode_64(p); 4907a4ed38d7SDouglas Fuller *p += 4; /* skip timeout_seconds */ 4908a4ed38d7SDouglas Fuller if (struct_v >= 2) { 4909a4ed38d7SDouglas Fuller ceph_decode_copy(p, &item->addr, sizeof(item->addr)); 4910a4ed38d7SDouglas Fuller ceph_decode_addr(&item->addr); 4911a4ed38d7SDouglas Fuller } 4912a4ed38d7SDouglas Fuller 4913a4ed38d7SDouglas Fuller dout("%s %s%llu cookie %llu addr %s\n", __func__, 4914a4ed38d7SDouglas Fuller ENTITY_NAME(item->name), item->cookie, 4915a4ed38d7SDouglas Fuller ceph_pr_addr(&item->addr.in_addr)); 4916a4ed38d7SDouglas Fuller return 0; 4917a4ed38d7SDouglas Fuller } 4918a4ed38d7SDouglas Fuller 4919a4ed38d7SDouglas Fuller static int decode_watchers(void **p, void *end, 4920a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4921a4ed38d7SDouglas Fuller u32 *num_watchers) 4922a4ed38d7SDouglas Fuller { 4923a4ed38d7SDouglas Fuller u8 struct_v; 4924a4ed38d7SDouglas Fuller u32 struct_len; 4925a4ed38d7SDouglas Fuller int i; 4926a4ed38d7SDouglas Fuller int ret; 4927a4ed38d7SDouglas Fuller 4928a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t", 4929a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4930a4ed38d7SDouglas Fuller if (ret) 4931a4ed38d7SDouglas Fuller return ret; 4932a4ed38d7SDouglas Fuller 4933a4ed38d7SDouglas Fuller *num_watchers = ceph_decode_32(p); 4934a4ed38d7SDouglas Fuller *watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO); 4935a4ed38d7SDouglas Fuller if (!*watchers) 4936a4ed38d7SDouglas Fuller return -ENOMEM; 4937a4ed38d7SDouglas Fuller 4938a4ed38d7SDouglas Fuller for (i = 0; i < *num_watchers; i++) { 4939a4ed38d7SDouglas Fuller ret = decode_watcher(p, end, *watchers + i); 4940a4ed38d7SDouglas Fuller if (ret) { 4941a4ed38d7SDouglas Fuller kfree(*watchers); 4942a4ed38d7SDouglas Fuller return ret; 4943a4ed38d7SDouglas Fuller } 4944a4ed38d7SDouglas Fuller } 4945a4ed38d7SDouglas Fuller 4946a4ed38d7SDouglas Fuller return 0; 4947a4ed38d7SDouglas Fuller } 4948a4ed38d7SDouglas Fuller 4949a4ed38d7SDouglas Fuller /* 4950a4ed38d7SDouglas Fuller * On success, the caller is responsible for: 4951a4ed38d7SDouglas Fuller * 4952a4ed38d7SDouglas Fuller * kfree(watchers); 4953a4ed38d7SDouglas Fuller */ 4954a4ed38d7SDouglas Fuller int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, 4955a4ed38d7SDouglas Fuller struct ceph_object_id *oid, 4956a4ed38d7SDouglas Fuller struct ceph_object_locator *oloc, 4957a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4958a4ed38d7SDouglas Fuller u32 *num_watchers) 4959a4ed38d7SDouglas Fuller { 4960a4ed38d7SDouglas Fuller struct ceph_osd_request *req; 4961a4ed38d7SDouglas Fuller struct page **pages; 4962a4ed38d7SDouglas Fuller int ret; 4963a4ed38d7SDouglas Fuller 4964a4ed38d7SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4965a4ed38d7SDouglas Fuller if (!req) 4966a4ed38d7SDouglas Fuller return -ENOMEM; 4967a4ed38d7SDouglas Fuller 4968a4ed38d7SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 4969a4ed38d7SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 4970a4ed38d7SDouglas Fuller req->r_flags = CEPH_OSD_FLAG_READ; 4971a4ed38d7SDouglas Fuller 4972a4ed38d7SDouglas Fuller pages = ceph_alloc_page_vector(1, GFP_NOIO); 4973a4ed38d7SDouglas Fuller if (IS_ERR(pages)) { 4974a4ed38d7SDouglas Fuller ret = PTR_ERR(pages); 4975a4ed38d7SDouglas Fuller goto out_put_req; 4976a4ed38d7SDouglas Fuller } 4977a4ed38d7SDouglas Fuller 4978a4ed38d7SDouglas Fuller osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0); 4979a4ed38d7SDouglas Fuller ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers, 4980a4ed38d7SDouglas Fuller response_data), 4981a4ed38d7SDouglas Fuller pages, PAGE_SIZE, 0, false, true); 4982a4ed38d7SDouglas Fuller 498326f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 498426f887e0SIlya Dryomov if (ret) 498526f887e0SIlya Dryomov goto out_put_req; 498626f887e0SIlya Dryomov 4987a4ed38d7SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 4988a4ed38d7SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 4989a4ed38d7SDouglas Fuller if (ret >= 0) { 4990a4ed38d7SDouglas Fuller void *p = page_address(pages[0]); 4991a4ed38d7SDouglas Fuller void *const end = p + req->r_ops[0].outdata_len; 4992a4ed38d7SDouglas Fuller 4993a4ed38d7SDouglas Fuller ret = decode_watchers(&p, end, watchers, num_watchers); 4994a4ed38d7SDouglas Fuller } 4995a4ed38d7SDouglas Fuller 4996a4ed38d7SDouglas Fuller out_put_req: 4997a4ed38d7SDouglas Fuller ceph_osdc_put_request(req); 4998a4ed38d7SDouglas Fuller return ret; 4999a4ed38d7SDouglas Fuller } 5000a4ed38d7SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_list_watchers); 5001a4ed38d7SDouglas Fuller 5002b07d3c4bSIlya Dryomov /* 5003dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 5004dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 5005dd935f44SJosh Durgin */ 5006f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 5007dd935f44SJosh Durgin { 500899d16943SIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 5009dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 5010dd935f44SJosh Durgin } 5011dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 5012dd935f44SJosh Durgin 50137cca78c9SIlya Dryomov void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) 50147cca78c9SIlya Dryomov { 50157cca78c9SIlya Dryomov down_read(&osdc->lock); 50167cca78c9SIlya Dryomov maybe_request_map(osdc); 50177cca78c9SIlya Dryomov up_read(&osdc->lock); 50187cca78c9SIlya Dryomov } 50197cca78c9SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_maybe_request_map); 5020dd935f44SJosh Durgin 5021dd935f44SJosh Durgin /* 5022428a7158SDouglas Fuller * Execute an OSD class method on an object. 5023428a7158SDouglas Fuller * 5024428a7158SDouglas Fuller * @flags: CEPH_OSD_FLAG_* 50252544a020SIlya Dryomov * @resp_len: in/out param for reply length 5026428a7158SDouglas Fuller */ 5027428a7158SDouglas Fuller int ceph_osdc_call(struct ceph_osd_client *osdc, 5028428a7158SDouglas Fuller struct ceph_object_id *oid, 5029428a7158SDouglas Fuller struct ceph_object_locator *oloc, 5030428a7158SDouglas Fuller const char *class, const char *method, 5031428a7158SDouglas Fuller unsigned int flags, 5032428a7158SDouglas Fuller struct page *req_page, size_t req_len, 5033428a7158SDouglas Fuller struct page *resp_page, size_t *resp_len) 5034428a7158SDouglas Fuller { 5035428a7158SDouglas Fuller struct ceph_osd_request *req; 5036428a7158SDouglas Fuller int ret; 5037428a7158SDouglas Fuller 50382544a020SIlya Dryomov if (req_len > PAGE_SIZE || (resp_page && *resp_len > PAGE_SIZE)) 50392544a020SIlya Dryomov return -E2BIG; 50402544a020SIlya Dryomov 5041428a7158SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 5042428a7158SDouglas Fuller if (!req) 5043428a7158SDouglas Fuller return -ENOMEM; 5044428a7158SDouglas Fuller 5045428a7158SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 5046428a7158SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 5047428a7158SDouglas Fuller req->r_flags = flags; 5048428a7158SDouglas Fuller 504924639ce5SIlya Dryomov ret = osd_req_op_cls_init(req, 0, class, method); 5050fe943d50SChengguang Xu if (ret) 5051fe943d50SChengguang Xu goto out_put_req; 5052fe943d50SChengguang Xu 5053428a7158SDouglas Fuller if (req_page) 5054428a7158SDouglas Fuller osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len, 5055428a7158SDouglas Fuller 0, false, false); 5056428a7158SDouglas Fuller if (resp_page) 5057428a7158SDouglas Fuller osd_req_op_cls_response_data_pages(req, 0, &resp_page, 50582544a020SIlya Dryomov *resp_len, 0, false, false); 5059428a7158SDouglas Fuller 506026f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 506126f887e0SIlya Dryomov if (ret) 506226f887e0SIlya Dryomov goto out_put_req; 506326f887e0SIlya Dryomov 5064428a7158SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 5065428a7158SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 5066428a7158SDouglas Fuller if (ret >= 0) { 5067428a7158SDouglas Fuller ret = req->r_ops[0].rval; 5068428a7158SDouglas Fuller if (resp_page) 5069428a7158SDouglas Fuller *resp_len = req->r_ops[0].outdata_len; 5070428a7158SDouglas Fuller } 5071428a7158SDouglas Fuller 5072428a7158SDouglas Fuller out_put_req: 5073428a7158SDouglas Fuller ceph_osdc_put_request(req); 5074428a7158SDouglas Fuller return ret; 5075428a7158SDouglas Fuller } 5076428a7158SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_call); 5077428a7158SDouglas Fuller 5078428a7158SDouglas Fuller /* 50793d14c5d2SYehuda Sadeh * init, shutdown 50803d14c5d2SYehuda Sadeh */ 50813d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 50823d14c5d2SYehuda Sadeh { 50833d14c5d2SYehuda Sadeh int err; 50843d14c5d2SYehuda Sadeh 50853d14c5d2SYehuda Sadeh dout("init\n"); 50863d14c5d2SYehuda Sadeh osdc->client = client; 50875aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 50883d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 50893d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 50909dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 50915aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 50925aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 50935aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 5094264048afSIlya Dryomov osdc->last_linger_id = CEPH_LINGER_ID_START; 5095922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 50964609245eSIlya Dryomov osdc->map_checks = RB_ROOT; 50974609245eSIlya Dryomov osdc->linger_map_checks = RB_ROOT; 50983d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 50993d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 51003d14c5d2SYehuda Sadeh 51013d14c5d2SYehuda Sadeh err = -ENOMEM; 5102e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 5103e5253a7bSIlya Dryomov if (!osdc->osdmap) 5104e5253a7bSIlya Dryomov goto out; 5105e5253a7bSIlya Dryomov 51069e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 51079e767adbSIlya Dryomov ceph_osd_request_cache); 51083d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 5109e5253a7bSIlya Dryomov goto out_map; 51103d14c5d2SYehuda Sadeh 5111d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 51120d9c1ab3SIlya Dryomov PAGE_SIZE, CEPH_OSD_SLAB_OPS, 10, "osd_op"); 51133d14c5d2SYehuda Sadeh if (err < 0) 51143d14c5d2SYehuda Sadeh goto out_mempool; 5115d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 51160d9c1ab3SIlya Dryomov PAGE_SIZE, CEPH_OSD_SLAB_OPS, 10, 51170d9c1ab3SIlya Dryomov "osd_op_reply"); 51183d14c5d2SYehuda Sadeh if (err < 0) 51193d14c5d2SYehuda Sadeh goto out_msgpool; 5120a40c4f10SYehuda Sadeh 5121dbcae088SDan Carpenter err = -ENOMEM; 5122a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 5123dbcae088SDan Carpenter if (!osdc->notify_wq) 5124c172ec5cSIlya Dryomov goto out_msgpool_reply; 5125c172ec5cSIlya Dryomov 512688bc1922SIlya Dryomov osdc->completion_wq = create_singlethread_workqueue("ceph-completion"); 512788bc1922SIlya Dryomov if (!osdc->completion_wq) 512888bc1922SIlya Dryomov goto out_notify_wq; 512988bc1922SIlya Dryomov 5130fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 5131fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 5132b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 5133b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 5134b37ee1b9SIlya Dryomov 51353d14c5d2SYehuda Sadeh return 0; 51363d14c5d2SYehuda Sadeh 513788bc1922SIlya Dryomov out_notify_wq: 513888bc1922SIlya Dryomov destroy_workqueue(osdc->notify_wq); 5139c172ec5cSIlya Dryomov out_msgpool_reply: 5140c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 51413d14c5d2SYehuda Sadeh out_msgpool: 51423d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 51433d14c5d2SYehuda Sadeh out_mempool: 51443d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 5145e5253a7bSIlya Dryomov out_map: 5146e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 51473d14c5d2SYehuda Sadeh out: 51483d14c5d2SYehuda Sadeh return err; 51493d14c5d2SYehuda Sadeh } 51503d14c5d2SYehuda Sadeh 51513d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 51523d14c5d2SYehuda Sadeh { 515388bc1922SIlya Dryomov destroy_workqueue(osdc->completion_wq); 5154a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 51553d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 51563d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 515742a2c09fSIlya Dryomov 51585aea3dcdSIlya Dryomov down_write(&osdc->lock); 515942a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 516042a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 516142a2c09fSIlya Dryomov struct ceph_osd, o_node); 51625aea3dcdSIlya Dryomov close_osd(osd); 516342a2c09fSIlya Dryomov } 51645aea3dcdSIlya Dryomov up_write(&osdc->lock); 516502113a0fSElena Reshetova WARN_ON(refcount_read(&osdc->homeless_osd.o_ref) != 1); 51665aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 51675aea3dcdSIlya Dryomov 51685aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 5169922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 51704609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); 51714609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); 51725aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 51735aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 517442a2c09fSIlya Dryomov 51753d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 51763d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 51773d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 51783d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 51793d14c5d2SYehuda Sadeh } 51803d14c5d2SYehuda Sadeh 51813d14c5d2SYehuda Sadeh /* 51823d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 51833d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 51843d14c5d2SYehuda Sadeh */ 51853d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 51863d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 51873d14c5d2SYehuda Sadeh u64 off, u64 *plen, 51883d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 5189b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 51903d14c5d2SYehuda Sadeh { 51913d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 51923d14c5d2SYehuda Sadeh int rc = 0; 51933d14c5d2SYehuda Sadeh 51943d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 51953d14c5d2SYehuda Sadeh vino.snap, off, *plen); 5196715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 51973d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 5198acead002SAlex Elder NULL, truncate_seq, truncate_size, 5199153e5167SAlex Elder false); 52006816282dSSage Weil if (IS_ERR(req)) 52016816282dSSage Weil return PTR_ERR(req); 52023d14c5d2SYehuda Sadeh 52033d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 5204406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 5205a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 52063d14c5d2SYehuda Sadeh 5207e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 520843bfe5deSAlex Elder off, *plen, *plen, page_align); 52093d14c5d2SYehuda Sadeh 52103d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 52113d14c5d2SYehuda Sadeh if (!rc) 52123d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 52133d14c5d2SYehuda Sadeh 52143d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 52153d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 52163d14c5d2SYehuda Sadeh return rc; 52173d14c5d2SYehuda Sadeh } 52183d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 52193d14c5d2SYehuda Sadeh 52203d14c5d2SYehuda Sadeh /* 52213d14c5d2SYehuda Sadeh * do a synchronous write on N pages 52223d14c5d2SYehuda Sadeh */ 52233d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 52243d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 52253d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 52263d14c5d2SYehuda Sadeh u64 off, u64 len, 52273d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 5228fac02ddfSArnd Bergmann struct timespec64 *mtime, 522924808826SAlex Elder struct page **pages, int num_pages) 52303d14c5d2SYehuda Sadeh { 52313d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 52323d14c5d2SYehuda Sadeh int rc = 0; 5233b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 52343d14c5d2SYehuda Sadeh 5235715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 523654ea0046SIlya Dryomov CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE, 5237acead002SAlex Elder snapc, truncate_seq, truncate_size, 5238153e5167SAlex Elder true); 52396816282dSSage Weil if (IS_ERR(req)) 52406816282dSSage Weil return PTR_ERR(req); 52413d14c5d2SYehuda Sadeh 52423d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 5243406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 524443bfe5deSAlex Elder false, false); 524543bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 52463d14c5d2SYehuda Sadeh 5247bb873b53SIlya Dryomov req->r_mtime = *mtime; 524887f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 52493d14c5d2SYehuda Sadeh if (!rc) 52503d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 52513d14c5d2SYehuda Sadeh 52523d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 52533d14c5d2SYehuda Sadeh if (rc == 0) 52543d14c5d2SYehuda Sadeh rc = len; 52553d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 52563d14c5d2SYehuda Sadeh return rc; 52573d14c5d2SYehuda Sadeh } 52583d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 52593d14c5d2SYehuda Sadeh 526057a35dfbSChengguang Xu int __init ceph_osdc_setup(void) 52615522ae0bSAlex Elder { 52623f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 52633f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 52643f1af42aSIlya Dryomov 52655522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 52663f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 52673f1af42aSIlya Dryomov 0, 0, NULL); 52685522ae0bSAlex Elder 52695522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 52705522ae0bSAlex Elder } 52715522ae0bSAlex Elder 52725522ae0bSAlex Elder void ceph_osdc_cleanup(void) 52735522ae0bSAlex Elder { 52745522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 52755522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 52765522ae0bSAlex Elder ceph_osd_request_cache = NULL; 52775522ae0bSAlex Elder } 52785522ae0bSAlex Elder 52793d14c5d2SYehuda Sadeh /* 52803d14c5d2SYehuda Sadeh * handle incoming message 52813d14c5d2SYehuda Sadeh */ 52823d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 52833d14c5d2SYehuda Sadeh { 52843d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 52855aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 52863d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 52873d14c5d2SYehuda Sadeh 52883d14c5d2SYehuda Sadeh switch (type) { 52893d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 52903d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 52913d14c5d2SYehuda Sadeh break; 52923d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 52935aea3dcdSIlya Dryomov handle_reply(osd, msg); 52943d14c5d2SYehuda Sadeh break; 5295a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5296a02a946dSIlya Dryomov handle_backoff(osd, msg); 5297a02a946dSIlya Dryomov break; 5298a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 5299a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 5300a40c4f10SYehuda Sadeh break; 53013d14c5d2SYehuda Sadeh 53023d14c5d2SYehuda Sadeh default: 53033d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 53043d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 53053d14c5d2SYehuda Sadeh } 53065aea3dcdSIlya Dryomov 53073d14c5d2SYehuda Sadeh ceph_msg_put(msg); 53083d14c5d2SYehuda Sadeh } 53093d14c5d2SYehuda Sadeh 53103d14c5d2SYehuda Sadeh /* 5311d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 5312d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 5313d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 53143d14c5d2SYehuda Sadeh */ 53153d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 53163d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 53173d14c5d2SYehuda Sadeh int *skip) 53183d14c5d2SYehuda Sadeh { 53193d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 53203d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 53215aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 53223d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 53233f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 53243d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 53255aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 53263d14c5d2SYehuda Sadeh 53275aea3dcdSIlya Dryomov down_read(&osdc->lock); 53285aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 53295aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 53305aea3dcdSIlya Dryomov *skip = 1; 53315aea3dcdSIlya Dryomov goto out_unlock_osdc; 53325aea3dcdSIlya Dryomov } 53335aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 53345aea3dcdSIlya Dryomov 53355aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 53365aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 53373d14c5d2SYehuda Sadeh if (!req) { 5338cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 5339cd8140c6SIlya Dryomov osd->o_osd, tid); 5340d15f9d69SIlya Dryomov *skip = 1; 53415aea3dcdSIlya Dryomov goto out_unlock_session; 53423d14c5d2SYehuda Sadeh } 53433d14c5d2SYehuda Sadeh 53448921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 53453d14c5d2SYehuda Sadeh 5346f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 5347d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 5348d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 5349d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 53503f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 53513f0a4ac5SIlya Dryomov false); 53523d14c5d2SYehuda Sadeh if (!m) 53535aea3dcdSIlya Dryomov goto out_unlock_session; 53543d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 53553d14c5d2SYehuda Sadeh req->r_reply = m; 53563d14c5d2SYehuda Sadeh } 53573d14c5d2SYehuda Sadeh 5358d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 5359d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 5360d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 5361d15f9d69SIlya Dryomov req->r_reply->data_length); 53623d14c5d2SYehuda Sadeh m = NULL; 5363d15f9d69SIlya Dryomov *skip = 1; 53645aea3dcdSIlya Dryomov goto out_unlock_session; 53653d14c5d2SYehuda Sadeh } 5366d15f9d69SIlya Dryomov 5367d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 53683d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 53693d14c5d2SYehuda Sadeh 53705aea3dcdSIlya Dryomov out_unlock_session: 53715aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 53725aea3dcdSIlya Dryomov out_unlock_osdc: 53735aea3dcdSIlya Dryomov up_read(&osdc->lock); 53743d14c5d2SYehuda Sadeh return m; 53753d14c5d2SYehuda Sadeh } 53763d14c5d2SYehuda Sadeh 537719079203SIlya Dryomov /* 537819079203SIlya Dryomov * TODO: switch to a msg-owned pagelist 537919079203SIlya Dryomov */ 538019079203SIlya Dryomov static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) 538119079203SIlya Dryomov { 538219079203SIlya Dryomov struct ceph_msg *m; 538319079203SIlya Dryomov int type = le16_to_cpu(hdr->type); 538419079203SIlya Dryomov u32 front_len = le32_to_cpu(hdr->front_len); 538519079203SIlya Dryomov u32 data_len = le32_to_cpu(hdr->data_len); 538619079203SIlya Dryomov 53870d9c1ab3SIlya Dryomov m = ceph_msg_new2(type, front_len, 1, GFP_NOIO, false); 538819079203SIlya Dryomov if (!m) 538919079203SIlya Dryomov return NULL; 539019079203SIlya Dryomov 539119079203SIlya Dryomov if (data_len) { 539219079203SIlya Dryomov struct page **pages; 539319079203SIlya Dryomov struct ceph_osd_data osd_data; 539419079203SIlya Dryomov 539519079203SIlya Dryomov pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), 539619079203SIlya Dryomov GFP_NOIO); 5397c22e853aSWei Yongjun if (IS_ERR(pages)) { 539819079203SIlya Dryomov ceph_msg_put(m); 539919079203SIlya Dryomov return NULL; 540019079203SIlya Dryomov } 540119079203SIlya Dryomov 540219079203SIlya Dryomov ceph_osd_data_pages_init(&osd_data, pages, data_len, 0, false, 540319079203SIlya Dryomov false); 540419079203SIlya Dryomov ceph_osdc_msg_data_add(m, &osd_data); 540519079203SIlya Dryomov } 540619079203SIlya Dryomov 540719079203SIlya Dryomov return m; 540819079203SIlya Dryomov } 540919079203SIlya Dryomov 54103d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 54113d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 54123d14c5d2SYehuda Sadeh int *skip) 54133d14c5d2SYehuda Sadeh { 54143d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 54153d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 54163d14c5d2SYehuda Sadeh 54171c20f2d2SAlex Elder *skip = 0; 54183d14c5d2SYehuda Sadeh switch (type) { 54193d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 5420a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5421a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 542219079203SIlya Dryomov return alloc_msg_with_page_vector(hdr); 54233d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 54243d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 54253d14c5d2SYehuda Sadeh default: 54265aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 54275aea3dcdSIlya Dryomov osd->o_osd, type); 54283d14c5d2SYehuda Sadeh *skip = 1; 54293d14c5d2SYehuda Sadeh return NULL; 54303d14c5d2SYehuda Sadeh } 54313d14c5d2SYehuda Sadeh } 54323d14c5d2SYehuda Sadeh 54333d14c5d2SYehuda Sadeh /* 54343d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 54353d14c5d2SYehuda Sadeh */ 54363d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 54373d14c5d2SYehuda Sadeh { 54383d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 54393d14c5d2SYehuda Sadeh if (get_osd(osd)) 54403d14c5d2SYehuda Sadeh return con; 54413d14c5d2SYehuda Sadeh return NULL; 54423d14c5d2SYehuda Sadeh } 54433d14c5d2SYehuda Sadeh 54443d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 54453d14c5d2SYehuda Sadeh { 54463d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 54473d14c5d2SYehuda Sadeh put_osd(osd); 54483d14c5d2SYehuda Sadeh } 54493d14c5d2SYehuda Sadeh 54503d14c5d2SYehuda Sadeh /* 54513d14c5d2SYehuda Sadeh * authentication 54523d14c5d2SYehuda Sadeh */ 5453a3530df3SAlex Elder /* 5454a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 5455a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 5456a3530df3SAlex Elder */ 5457a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 54588f43fb53SAlex Elder int *proto, int force_new) 54593d14c5d2SYehuda Sadeh { 54603d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 54613d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 54623d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 546374f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 54643d14c5d2SYehuda Sadeh 546574f1869fSAlex Elder if (force_new && auth->authorizer) { 54666c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 546774f1869fSAlex Elder auth->authorizer = NULL; 54683d14c5d2SYehuda Sadeh } 546927859f97SSage Weil if (!auth->authorizer) { 547027859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 5471a3530df3SAlex Elder auth); 54723d14c5d2SYehuda Sadeh if (ret) 5473a3530df3SAlex Elder return ERR_PTR(ret); 547427859f97SSage Weil } else { 547527859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 54760bed9b5cSSage Weil auth); 54770bed9b5cSSage Weil if (ret) 54780bed9b5cSSage Weil return ERR_PTR(ret); 54793d14c5d2SYehuda Sadeh } 54803d14c5d2SYehuda Sadeh *proto = ac->protocol; 548174f1869fSAlex Elder 5482a3530df3SAlex Elder return auth; 54833d14c5d2SYehuda Sadeh } 54843d14c5d2SYehuda Sadeh 54856daca13dSIlya Dryomov static int add_authorizer_challenge(struct ceph_connection *con, 54866daca13dSIlya Dryomov void *challenge_buf, int challenge_buf_len) 54876daca13dSIlya Dryomov { 54886daca13dSIlya Dryomov struct ceph_osd *o = con->private; 54896daca13dSIlya Dryomov struct ceph_osd_client *osdc = o->o_osdc; 54906daca13dSIlya Dryomov struct ceph_auth_client *ac = osdc->client->monc.auth; 54916daca13dSIlya Dryomov 54926daca13dSIlya Dryomov return ceph_auth_add_authorizer_challenge(ac, o->o_auth.authorizer, 54936daca13dSIlya Dryomov challenge_buf, challenge_buf_len); 54946daca13dSIlya Dryomov } 54953d14c5d2SYehuda Sadeh 54960dde5848SIlya Dryomov static int verify_authorizer_reply(struct ceph_connection *con) 54973d14c5d2SYehuda Sadeh { 54983d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 54993d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 55003d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 55013d14c5d2SYehuda Sadeh 55020dde5848SIlya Dryomov return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer); 55033d14c5d2SYehuda Sadeh } 55043d14c5d2SYehuda Sadeh 55053d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 55063d14c5d2SYehuda Sadeh { 55073d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 55083d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 55093d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 55103d14c5d2SYehuda Sadeh 551127859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 55123d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 55133d14c5d2SYehuda Sadeh } 55143d14c5d2SYehuda Sadeh 55158cb441c0SIlya Dryomov static void osd_reencode_message(struct ceph_msg *msg) 55168cb441c0SIlya Dryomov { 5517914902afSIlya Dryomov int type = le16_to_cpu(msg->hdr.type); 5518914902afSIlya Dryomov 5519914902afSIlya Dryomov if (type == CEPH_MSG_OSD_OP) 55208cb441c0SIlya Dryomov encode_request_finish(msg); 55218cb441c0SIlya Dryomov } 55228cb441c0SIlya Dryomov 552379dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 552433d07337SYan, Zheng { 552579dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 552633d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 552779dbd1baSIlya Dryomov 552833d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 552933d07337SYan, Zheng } 553033d07337SYan, Zheng 553179dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 553233d07337SYan, Zheng { 553379dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 553433d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 553579dbd1baSIlya Dryomov 553633d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 553733d07337SYan, Zheng } 553833d07337SYan, Zheng 55393d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 55403d14c5d2SYehuda Sadeh .get = get_osd_con, 55413d14c5d2SYehuda Sadeh .put = put_osd_con, 55423d14c5d2SYehuda Sadeh .dispatch = dispatch, 55433d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 55446daca13dSIlya Dryomov .add_authorizer_challenge = add_authorizer_challenge, 55453d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 55463d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 55473d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 55488cb441c0SIlya Dryomov .reencode_message = osd_reencode_message, 554979dbd1baSIlya Dryomov .sign_message = osd_sign_message, 555079dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 55515aea3dcdSIlya Dryomov .fault = osd_fault, 55523d14c5d2SYehuda Sadeh }; 5553