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 61713d1ad16SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 61813d1ad16SIlya Dryomov { 61913d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 62013d1ad16SIlya Dryomov struct ceph_msg *msg; 62113d1ad16SIlya Dryomov int msg_size; 6223d14c5d2SYehuda Sadeh 623d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 62430c156d9SYan, Zheng WARN_ON(ceph_oloc_empty(&req->r_base_oloc)); 625d30291b9SIlya Dryomov 62613d1ad16SIlya Dryomov /* create request message */ 6278cb441c0SIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 6288cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 6298cb441c0SIlya Dryomov msg_size += 4 + 4 + 4; /* hash, osdmap_epoch, flags */ 6308cb441c0SIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 6318cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid); /* reqid */ 6328cb441c0SIlya Dryomov msg_size += sizeof(struct ceph_blkin_trace_info); /* trace */ 6338cb441c0SIlya Dryomov msg_size += 4 + sizeof(struct ceph_timespec); /* client_inc, mtime */ 63430c156d9SYan, Zheng msg_size += CEPH_ENCODING_START_BLK_LEN + 63530c156d9SYan, Zheng ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */ 63613d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 63713d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 638ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 639ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 64013d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 6418cb441c0SIlya Dryomov msg_size += 4 + 8; /* retry_attempt, features */ 642ae458f5aSIlya Dryomov 64313d1ad16SIlya Dryomov if (req->r_mempool) 6443b83f60dSIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op, msg_size); 6453d14c5d2SYehuda Sadeh else 64613d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); 64713d1ad16SIlya Dryomov if (!msg) 64813d1ad16SIlya Dryomov return -ENOMEM; 6493d14c5d2SYehuda Sadeh 6503d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 6513d14c5d2SYehuda Sadeh req->r_request = msg; 6523d14c5d2SYehuda Sadeh 65313d1ad16SIlya Dryomov /* create reply message */ 65413d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 655711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 656711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 65713d1ad16SIlya Dryomov 65813d1ad16SIlya Dryomov if (req->r_mempool) 6593b83f60dSIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, msg_size); 66013d1ad16SIlya Dryomov else 66113d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); 66213d1ad16SIlya Dryomov if (!msg) 66313d1ad16SIlya Dryomov return -ENOMEM; 66413d1ad16SIlya Dryomov 66513d1ad16SIlya Dryomov req->r_reply = msg; 66613d1ad16SIlya Dryomov 66713d1ad16SIlya Dryomov return 0; 66813d1ad16SIlya Dryomov } 66913d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 6703d14c5d2SYehuda Sadeh 671a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 672a8dd0a37SAlex Elder { 673a8dd0a37SAlex Elder switch (opcode) { 67470b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 67570b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 67670b5bfa3SIlya Dryomov #undef GENERATE_CASE 677a8dd0a37SAlex Elder default: 678a8dd0a37SAlex Elder return false; 679a8dd0a37SAlex Elder } 680a8dd0a37SAlex Elder } 681a8dd0a37SAlex Elder 68233803f33SAlex Elder /* 68333803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 68433803f33SAlex Elder * other information associated with them. It also serves as a 68533803f33SAlex Elder * common init routine for all the other init functions, below. 68633803f33SAlex Elder */ 687c99d2d4aSAlex Elder static struct ceph_osd_req_op * 68849719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 689144cba14SYan, Zheng u16 opcode, u32 flags) 69033803f33SAlex Elder { 691c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 692c99d2d4aSAlex Elder 693c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 69433803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 69533803f33SAlex Elder 696c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 69733803f33SAlex Elder memset(op, 0, sizeof (*op)); 69833803f33SAlex Elder op->op = opcode; 699144cba14SYan, Zheng op->flags = flags; 700c99d2d4aSAlex Elder 701c99d2d4aSAlex Elder return op; 70233803f33SAlex Elder } 70333803f33SAlex Elder 70449719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 705144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 70649719778SAlex Elder { 707144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 70849719778SAlex Elder } 70949719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 71049719778SAlex Elder 711c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 712c99d2d4aSAlex Elder unsigned int which, u16 opcode, 71333803f33SAlex Elder u64 offset, u64 length, 71433803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 71533803f33SAlex Elder { 716144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 717144cba14SYan, Zheng opcode, 0); 71833803f33SAlex Elder size_t payload_len = 0; 71933803f33SAlex Elder 720ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 721e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 722e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 72333803f33SAlex Elder 72433803f33SAlex Elder op->extent.offset = offset; 72533803f33SAlex Elder op->extent.length = length; 72633803f33SAlex Elder op->extent.truncate_size = truncate_size; 72733803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 728e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 72933803f33SAlex Elder payload_len += length; 73033803f33SAlex Elder 731de2aa102SIlya Dryomov op->indata_len = payload_len; 73233803f33SAlex Elder } 73333803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 73433803f33SAlex Elder 735c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 736c99d2d4aSAlex Elder unsigned int which, u64 length) 737e5975c7cSAlex Elder { 738c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 739c99d2d4aSAlex Elder u64 previous; 740c99d2d4aSAlex Elder 741c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 742c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 743c99d2d4aSAlex Elder previous = op->extent.length; 744e5975c7cSAlex Elder 745e5975c7cSAlex Elder if (length == previous) 746e5975c7cSAlex Elder return; /* Nothing to do */ 747e5975c7cSAlex Elder BUG_ON(length > previous); 748e5975c7cSAlex Elder 749e5975c7cSAlex Elder op->extent.length = length; 750d641df81SYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 751de2aa102SIlya Dryomov op->indata_len -= previous - length; 752e5975c7cSAlex Elder } 753e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 754e5975c7cSAlex Elder 7552c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 7562c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 7572c63f49aSYan, Zheng { 7582c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 7592c63f49aSYan, Zheng 7602c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 7612c63f49aSYan, Zheng 7622c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 7632c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 7642c63f49aSYan, Zheng /* dup previous one */ 7652c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 7662c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 7672c63f49aSYan, Zheng op->extent = prev_op->extent; 7682c63f49aSYan, Zheng /* adjust offset */ 7692c63f49aSYan, Zheng op->extent.offset += offset_inc; 7702c63f49aSYan, Zheng op->extent.length -= offset_inc; 7712c63f49aSYan, Zheng 7722c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 7732c63f49aSYan, Zheng op->indata_len -= offset_inc; 7742c63f49aSYan, Zheng } 7752c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 7762c63f49aSYan, Zheng 777fe943d50SChengguang Xu int osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 77824639ce5SIlya Dryomov const char *class, const char *method) 77933803f33SAlex Elder { 78024639ce5SIlya Dryomov struct ceph_osd_req_op *op; 7815f562df5SAlex Elder struct ceph_pagelist *pagelist; 78233803f33SAlex Elder size_t payload_len = 0; 78333803f33SAlex Elder size_t size; 78433803f33SAlex Elder 78524639ce5SIlya Dryomov op = _osd_req_op_init(osd_req, which, CEPH_OSD_OP_CALL, 0); 78633803f33SAlex Elder 78733165d47SIlya Dryomov pagelist = ceph_pagelist_alloc(GFP_NOFS); 788fe943d50SChengguang Xu if (!pagelist) 789fe943d50SChengguang Xu return -ENOMEM; 790fe943d50SChengguang Xu 79133803f33SAlex Elder op->cls.class_name = class; 79233803f33SAlex Elder size = strlen(class); 79333803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 79433803f33SAlex Elder op->cls.class_len = size; 7955f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 79633803f33SAlex Elder payload_len += size; 79733803f33SAlex Elder 79833803f33SAlex Elder op->cls.method_name = method; 79933803f33SAlex Elder size = strlen(method); 80033803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 80133803f33SAlex Elder op->cls.method_len = size; 8025f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 80333803f33SAlex Elder payload_len += size; 80433803f33SAlex Elder 805a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 8065f562df5SAlex Elder 807de2aa102SIlya Dryomov op->indata_len = payload_len; 808fe943d50SChengguang Xu return 0; 80933803f33SAlex Elder } 81033803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 8118c042b0dSAlex Elder 812d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 813d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 814d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 815d74b50beSYan, Zheng { 816144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 817144cba14SYan, Zheng opcode, 0); 818d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 819d74b50beSYan, Zheng size_t payload_len; 820d74b50beSYan, Zheng 821d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 822d74b50beSYan, Zheng 82333165d47SIlya Dryomov pagelist = ceph_pagelist_alloc(GFP_NOFS); 824d74b50beSYan, Zheng if (!pagelist) 825d74b50beSYan, Zheng return -ENOMEM; 826d74b50beSYan, Zheng 827d74b50beSYan, Zheng payload_len = strlen(name); 828d74b50beSYan, Zheng op->xattr.name_len = payload_len; 829d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 830d74b50beSYan, Zheng 831d74b50beSYan, Zheng op->xattr.value_len = size; 832d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 833d74b50beSYan, Zheng payload_len += size; 834d74b50beSYan, Zheng 835d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 836d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 837d74b50beSYan, Zheng 838d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 839de2aa102SIlya Dryomov op->indata_len = payload_len; 840d74b50beSYan, Zheng return 0; 841d74b50beSYan, Zheng } 842d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 843d74b50beSYan, Zheng 844922dab61SIlya Dryomov /* 845922dab61SIlya Dryomov * @watch_opcode: CEPH_OSD_WATCH_OP_* 846922dab61SIlya Dryomov */ 847922dab61SIlya Dryomov static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, 848922dab61SIlya Dryomov u64 cookie, u8 watch_opcode) 84933803f33SAlex Elder { 850922dab61SIlya Dryomov struct ceph_osd_req_op *op; 85133803f33SAlex Elder 852922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); 85333803f33SAlex Elder op->watch.cookie = cookie; 854922dab61SIlya Dryomov op->watch.op = watch_opcode; 855922dab61SIlya Dryomov op->watch.gen = 0; 85633803f33SAlex Elder } 85733803f33SAlex Elder 858c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 859c647b8a8SIlya Dryomov unsigned int which, 860c647b8a8SIlya Dryomov u64 expected_object_size, 861c647b8a8SIlya Dryomov u64 expected_write_size) 862c647b8a8SIlya Dryomov { 863c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 864144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 865144cba14SYan, Zheng 0); 866c647b8a8SIlya Dryomov 867c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 868c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 869c647b8a8SIlya Dryomov 870c647b8a8SIlya Dryomov /* 871c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 872c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 873c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 874c647b8a8SIlya Dryomov */ 875c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 876c647b8a8SIlya Dryomov } 877c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 878c647b8a8SIlya Dryomov 87990af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 880ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 881ec9123c5SAlex Elder { 882ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 883ec9123c5SAlex Elder 884ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 885ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 886ec9123c5SAlex Elder if (length) 88790af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 888ec9123c5SAlex Elder length, osd_data->alignment); 889ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 890ec9123c5SAlex Elder BUG_ON(!length); 89190af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 892ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 893ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 8945359a17dSIlya Dryomov ceph_msg_data_add_bio(msg, &osd_data->bio_pos, length); 895ec9123c5SAlex Elder #endif 896b9e281c2SIlya Dryomov } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BVECS) { 897b9e281c2SIlya Dryomov ceph_msg_data_add_bvecs(msg, &osd_data->bvec_pos); 898ec9123c5SAlex Elder } else { 899ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 900ec9123c5SAlex Elder } 901ec9123c5SAlex Elder } 902ec9123c5SAlex Elder 903bb873b53SIlya Dryomov static u32 osd_req_encode_op(struct ceph_osd_op *dst, 904bb873b53SIlya Dryomov const struct ceph_osd_req_op *src) 9053d14c5d2SYehuda Sadeh { 906065a68f9SAlex Elder switch (src->op) { 907fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 908fbfab539SAlex Elder break; 9093d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 9103d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 911e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 912ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 913ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 914175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 915175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 9163d14c5d2SYehuda Sadeh dst->extent.truncate_size = 9173d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 9183d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 9193d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 9203d14c5d2SYehuda Sadeh break; 9213d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 9223d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 9233d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 924bb873b53SIlya Dryomov dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 9253d14c5d2SYehuda Sadeh break; 926a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 927a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 928922dab61SIlya Dryomov dst->watch.ver = cpu_to_le64(0); 929922dab61SIlya Dryomov dst->watch.op = src->watch.op; 930922dab61SIlya Dryomov dst->watch.gen = cpu_to_le32(src->watch.gen); 931922dab61SIlya Dryomov break; 932922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 933a40c4f10SYehuda Sadeh break; 93419079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 93519079203SIlya Dryomov dst->notify.cookie = cpu_to_le64(src->notify.cookie); 93619079203SIlya Dryomov break; 937a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 938a4ed38d7SDouglas Fuller break; 939c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 940c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 941c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 942c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 943c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 944c647b8a8SIlya Dryomov break; 945d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 946d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 947d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 948d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 949d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 950d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 951d74b50beSYan, Zheng break; 952864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 953864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 954864e9197SYan, Zheng break; 9553d14c5d2SYehuda Sadeh default: 9564c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 9578f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 9584c46459cSAlex Elder WARN_ON(1); 959a8dd0a37SAlex Elder 960a8dd0a37SAlex Elder return 0; 9613d14c5d2SYehuda Sadeh } 9627b25bf5fSIlya Dryomov 963a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 9647b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 965de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 966175face2SAlex Elder 967bb873b53SIlya Dryomov return src->indata_len; 9683d14c5d2SYehuda Sadeh } 9693d14c5d2SYehuda Sadeh 9703d14c5d2SYehuda Sadeh /* 9713d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 9723d14c5d2SYehuda Sadeh * extent as needed. 9733d14c5d2SYehuda Sadeh * 9743d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 9753d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 9763d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 9773d14c5d2SYehuda Sadeh */ 9783d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 9793d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 9803d14c5d2SYehuda Sadeh struct ceph_vino vino, 981715e4cd4SYan, Zheng u64 off, u64 *plen, 982715e4cd4SYan, Zheng unsigned int which, int num_ops, 9833d14c5d2SYehuda Sadeh int opcode, int flags, 9843d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 9853d14c5d2SYehuda Sadeh u32 truncate_seq, 9863d14c5d2SYehuda Sadeh u64 truncate_size, 987153e5167SAlex Elder bool use_mempool) 9883d14c5d2SYehuda Sadeh { 9893d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 99075d1c941SAlex Elder u64 objnum = 0; 99175d1c941SAlex Elder u64 objoff = 0; 99275d1c941SAlex Elder u64 objlen = 0; 9936816282dSSage Weil int r; 9943d14c5d2SYehuda Sadeh 995ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 996864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 997864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 9983d14c5d2SYehuda Sadeh 999acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 1000ae7ca4a3SAlex Elder GFP_NOFS); 100113d1ad16SIlya Dryomov if (!req) { 100213d1ad16SIlya Dryomov r = -ENOMEM; 100313d1ad16SIlya Dryomov goto fail; 100413d1ad16SIlya Dryomov } 100579528734SAlex Elder 10063d14c5d2SYehuda Sadeh /* calculate max write size */ 1007a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 100813d1ad16SIlya Dryomov if (r) 100913d1ad16SIlya Dryomov goto fail; 1010a19dadfbSAlex Elder 1011864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 1012144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 1013864e9197SYan, Zheng } else { 10147627151eSYan, Zheng u32 object_size = layout->object_size; 1015864e9197SYan, Zheng u32 object_base = off - objoff; 1016ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 1017d18d1e28SAlex Elder if (truncate_size <= object_base) { 1018d18d1e28SAlex Elder truncate_size = 0; 1019d18d1e28SAlex Elder } else { 1020d18d1e28SAlex Elder truncate_size -= object_base; 1021d18d1e28SAlex Elder if (truncate_size > object_size) 1022d18d1e28SAlex Elder truncate_size = object_size; 1023d18d1e28SAlex Elder } 1024ccca4e37SYan, Zheng } 1025715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 1026b0270324SAlex Elder truncate_size, truncate_seq); 1027864e9197SYan, Zheng } 1028d18d1e28SAlex Elder 1029bb873b53SIlya Dryomov req->r_flags = flags; 10307627151eSYan, Zheng req->r_base_oloc.pool = layout->pool_id; 103130c156d9SYan, Zheng req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns); 1032d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 1033dbe0fc41SAlex Elder 1034bb873b53SIlya Dryomov req->r_snapid = vino.snap; 1035bb873b53SIlya Dryomov if (flags & CEPH_OSD_FLAG_WRITE) 1036bb873b53SIlya Dryomov req->r_data_offset = off; 1037bb873b53SIlya Dryomov 103813d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 103913d1ad16SIlya Dryomov if (r) 104013d1ad16SIlya Dryomov goto fail; 104113d1ad16SIlya Dryomov 10423d14c5d2SYehuda Sadeh return req; 104313d1ad16SIlya Dryomov 104413d1ad16SIlya Dryomov fail: 104513d1ad16SIlya Dryomov ceph_osdc_put_request(req); 104613d1ad16SIlya Dryomov return ERR_PTR(r); 10473d14c5d2SYehuda Sadeh } 10483d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 10493d14c5d2SYehuda Sadeh 10503d14c5d2SYehuda Sadeh /* 10513d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 10523d14c5d2SYehuda Sadeh */ 1053fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 10544609245eSIlya Dryomov DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) 10553d14c5d2SYehuda Sadeh 105666850df5SIlya Dryomov /* 105766850df5SIlya Dryomov * Call @fn on each OSD request as long as @fn returns 0. 105866850df5SIlya Dryomov */ 105966850df5SIlya Dryomov static void for_each_request(struct ceph_osd_client *osdc, 106066850df5SIlya Dryomov int (*fn)(struct ceph_osd_request *req, void *arg), 106166850df5SIlya Dryomov void *arg) 106266850df5SIlya Dryomov { 106366850df5SIlya Dryomov struct rb_node *n, *p; 106466850df5SIlya Dryomov 106566850df5SIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 106666850df5SIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 106766850df5SIlya Dryomov 106866850df5SIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 106966850df5SIlya Dryomov struct ceph_osd_request *req = 107066850df5SIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 107166850df5SIlya Dryomov 107266850df5SIlya Dryomov p = rb_next(p); 107366850df5SIlya Dryomov if (fn(req, arg)) 107466850df5SIlya Dryomov return; 107566850df5SIlya Dryomov } 107666850df5SIlya Dryomov } 107766850df5SIlya Dryomov 107866850df5SIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 107966850df5SIlya Dryomov struct ceph_osd_request *req = 108066850df5SIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 108166850df5SIlya Dryomov 108266850df5SIlya Dryomov p = rb_next(p); 108366850df5SIlya Dryomov if (fn(req, arg)) 108466850df5SIlya Dryomov return; 108566850df5SIlya Dryomov } 108666850df5SIlya Dryomov } 108766850df5SIlya Dryomov 10880247a0cfSIlya Dryomov static bool osd_homeless(struct ceph_osd *osd) 10890247a0cfSIlya Dryomov { 10900247a0cfSIlya Dryomov return osd->o_osd == CEPH_HOMELESS_OSD; 10910247a0cfSIlya Dryomov } 10920247a0cfSIlya Dryomov 10935aea3dcdSIlya Dryomov static bool osd_registered(struct ceph_osd *osd) 10943d14c5d2SYehuda Sadeh { 10955aea3dcdSIlya Dryomov verify_osdc_locked(osd->o_osdc); 10963d14c5d2SYehuda Sadeh 10975aea3dcdSIlya Dryomov return !RB_EMPTY_NODE(&osd->o_node); 10983d14c5d2SYehuda Sadeh } 10993d14c5d2SYehuda Sadeh 11003d14c5d2SYehuda Sadeh /* 11010247a0cfSIlya Dryomov * Assumes @osd is zero-initialized. 11020247a0cfSIlya Dryomov */ 11030247a0cfSIlya Dryomov static void osd_init(struct ceph_osd *osd) 11040247a0cfSIlya Dryomov { 110502113a0fSElena Reshetova refcount_set(&osd->o_ref, 1); 11060247a0cfSIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 11075aea3dcdSIlya Dryomov osd->o_requests = RB_ROOT; 1108922dab61SIlya Dryomov osd->o_linger_requests = RB_ROOT; 1109a02a946dSIlya Dryomov osd->o_backoff_mappings = RB_ROOT; 1110a02a946dSIlya Dryomov osd->o_backoffs_by_id = RB_ROOT; 11110247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_osd_lru); 11120247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_keepalive_item); 11130247a0cfSIlya Dryomov osd->o_incarnation = 1; 11145aea3dcdSIlya Dryomov mutex_init(&osd->lock); 11150247a0cfSIlya Dryomov } 11160247a0cfSIlya Dryomov 11170247a0cfSIlya Dryomov static void osd_cleanup(struct ceph_osd *osd) 11180247a0cfSIlya Dryomov { 11190247a0cfSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); 11205aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 1121922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 1122a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoff_mappings)); 1123a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoffs_by_id)); 11240247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_osd_lru)); 11250247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_keepalive_item)); 11260247a0cfSIlya Dryomov 11270247a0cfSIlya Dryomov if (osd->o_auth.authorizer) { 11280247a0cfSIlya Dryomov WARN_ON(osd_homeless(osd)); 11290247a0cfSIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 11300247a0cfSIlya Dryomov } 11310247a0cfSIlya Dryomov } 11320247a0cfSIlya Dryomov 11330247a0cfSIlya Dryomov /* 11343d14c5d2SYehuda Sadeh * Track open sessions with osds. 11353d14c5d2SYehuda Sadeh */ 1136e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 11373d14c5d2SYehuda Sadeh { 11383d14c5d2SYehuda Sadeh struct ceph_osd *osd; 11393d14c5d2SYehuda Sadeh 11400247a0cfSIlya Dryomov WARN_ON(onum == CEPH_HOMELESS_OSD); 11410247a0cfSIlya Dryomov 11427a28f59bSIlya Dryomov osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); 11430247a0cfSIlya Dryomov osd_init(osd); 11443d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1145e10006f8SAlex Elder osd->o_osd = onum; 11463d14c5d2SYehuda Sadeh 1147b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 11483d14c5d2SYehuda Sadeh 11493d14c5d2SYehuda Sadeh return osd; 11503d14c5d2SYehuda Sadeh } 11513d14c5d2SYehuda Sadeh 11523d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 11533d14c5d2SYehuda Sadeh { 115402113a0fSElena Reshetova if (refcount_inc_not_zero(&osd->o_ref)) { 115502113a0fSElena Reshetova dout("get_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref)-1, 115602113a0fSElena Reshetova refcount_read(&osd->o_ref)); 11573d14c5d2SYehuda Sadeh return osd; 11583d14c5d2SYehuda Sadeh } else { 11593d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 11603d14c5d2SYehuda Sadeh return NULL; 11613d14c5d2SYehuda Sadeh } 11623d14c5d2SYehuda Sadeh } 11633d14c5d2SYehuda Sadeh 11643d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 11653d14c5d2SYehuda Sadeh { 116602113a0fSElena Reshetova dout("put_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref), 116702113a0fSElena Reshetova refcount_read(&osd->o_ref) - 1); 116802113a0fSElena Reshetova if (refcount_dec_and_test(&osd->o_ref)) { 11690247a0cfSIlya Dryomov osd_cleanup(osd); 11703d14c5d2SYehuda Sadeh kfree(osd); 11713d14c5d2SYehuda Sadeh } 11723d14c5d2SYehuda Sadeh } 11733d14c5d2SYehuda Sadeh 1174fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1175fcd00b68SIlya Dryomov 11769dd2845cSIlya Dryomov static void __move_osd_to_lru(struct ceph_osd *osd) 11773d14c5d2SYehuda Sadeh { 11789dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 11799dd2845cSIlya Dryomov 11809dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11813d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1182bbf37ec3SIlya Dryomov 11839dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 11843d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 11859dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 11869dd2845cSIlya Dryomov 1187a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 11883d14c5d2SYehuda Sadeh } 11893d14c5d2SYehuda Sadeh 11909dd2845cSIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd *osd) 1191bbf37ec3SIlya Dryomov { 11925aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1193922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) 11949dd2845cSIlya Dryomov __move_osd_to_lru(osd); 1195bbf37ec3SIlya Dryomov } 1196bbf37ec3SIlya Dryomov 11973d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 11983d14c5d2SYehuda Sadeh { 11999dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 12009dd2845cSIlya Dryomov 12019dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 12029dd2845cSIlya Dryomov 12039dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 12043d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 12053d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 12069dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 12073d14c5d2SYehuda Sadeh } 12083d14c5d2SYehuda Sadeh 12093d14c5d2SYehuda Sadeh /* 12105aea3dcdSIlya Dryomov * Close the connection and assign any leftover requests to the 12115aea3dcdSIlya Dryomov * homeless session. 12125aea3dcdSIlya Dryomov */ 12135aea3dcdSIlya Dryomov static void close_osd(struct ceph_osd *osd) 12145aea3dcdSIlya Dryomov { 12155aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 12165aea3dcdSIlya Dryomov struct rb_node *n; 12175aea3dcdSIlya Dryomov 12185aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 12195aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 12205aea3dcdSIlya Dryomov 12215aea3dcdSIlya Dryomov ceph_con_close(&osd->o_con); 12225aea3dcdSIlya Dryomov 12235aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 12245aea3dcdSIlya Dryomov struct ceph_osd_request *req = 12255aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 12265aea3dcdSIlya Dryomov 12275aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 12285aea3dcdSIlya Dryomov 12295aea3dcdSIlya Dryomov dout(" reassigning req %p tid %llu\n", req, req->r_tid); 12305aea3dcdSIlya Dryomov unlink_request(osd, req); 12315aea3dcdSIlya Dryomov link_request(&osdc->homeless_osd, req); 12325aea3dcdSIlya Dryomov } 1233922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 1234922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1235922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 1236922dab61SIlya Dryomov 1237922dab61SIlya Dryomov n = rb_next(n); /* unlink_linger() */ 1238922dab61SIlya Dryomov 1239922dab61SIlya Dryomov dout(" reassigning lreq %p linger_id %llu\n", lreq, 1240922dab61SIlya Dryomov lreq->linger_id); 1241922dab61SIlya Dryomov unlink_linger(osd, lreq); 1242922dab61SIlya Dryomov link_linger(&osdc->homeless_osd, lreq); 1243922dab61SIlya Dryomov } 1244a02a946dSIlya Dryomov clear_backoffs(osd); 12455aea3dcdSIlya Dryomov 12465aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 12475aea3dcdSIlya Dryomov erase_osd(&osdc->osds, osd); 12485aea3dcdSIlya Dryomov put_osd(osd); 12495aea3dcdSIlya Dryomov } 12505aea3dcdSIlya Dryomov 12515aea3dcdSIlya Dryomov /* 12523d14c5d2SYehuda Sadeh * reset osd connect 12533d14c5d2SYehuda Sadeh */ 12545aea3dcdSIlya Dryomov static int reopen_osd(struct ceph_osd *osd) 12553d14c5d2SYehuda Sadeh { 1256c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 12573d14c5d2SYehuda Sadeh 12585aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 12595aea3dcdSIlya Dryomov 12605aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1261922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) { 12625aea3dcdSIlya Dryomov close_osd(osd); 1263c3acb181SAlex Elder return -ENODEV; 1264c3acb181SAlex Elder } 1265c3acb181SAlex Elder 12665aea3dcdSIlya Dryomov peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; 1267c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 12683d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 12695aea3dcdSIlya Dryomov struct rb_node *n; 1270c3acb181SAlex Elder 12713d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 12720b4af2e8SIlya Dryomov "letting msgr retry\n"); 12733d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 12745aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 12755aea3dcdSIlya Dryomov struct ceph_osd_request *req = 12765aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 12773d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 12785aea3dcdSIlya Dryomov } 1279c3acb181SAlex Elder 1280c3acb181SAlex Elder return -EAGAIN; 12813d14c5d2SYehuda Sadeh } 1282c3acb181SAlex Elder 1283c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1284c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1285c3acb181SAlex Elder osd->o_incarnation++; 1286c3acb181SAlex Elder 1287c3acb181SAlex Elder return 0; 12883d14c5d2SYehuda Sadeh } 12893d14c5d2SYehuda Sadeh 12905aea3dcdSIlya Dryomov static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, 12915aea3dcdSIlya Dryomov bool wrlocked) 12923d14c5d2SYehuda Sadeh { 12935aea3dcdSIlya Dryomov struct ceph_osd *osd; 12945aea3dcdSIlya Dryomov 12955aea3dcdSIlya Dryomov if (wrlocked) 12965aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 12975aea3dcdSIlya Dryomov else 12985aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 12995aea3dcdSIlya Dryomov 13005aea3dcdSIlya Dryomov if (o != CEPH_HOMELESS_OSD) 13015aea3dcdSIlya Dryomov osd = lookup_osd(&osdc->osds, o); 13025aea3dcdSIlya Dryomov else 13035aea3dcdSIlya Dryomov osd = &osdc->homeless_osd; 13045aea3dcdSIlya Dryomov if (!osd) { 13055aea3dcdSIlya Dryomov if (!wrlocked) 13065aea3dcdSIlya Dryomov return ERR_PTR(-EAGAIN); 13075aea3dcdSIlya Dryomov 13085aea3dcdSIlya Dryomov osd = create_osd(osdc, o); 13095aea3dcdSIlya Dryomov insert_osd(&osdc->osds, osd); 13105aea3dcdSIlya Dryomov ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, 13115aea3dcdSIlya Dryomov &osdc->osdmap->osd_addr[osd->o_osd]); 13125aea3dcdSIlya Dryomov } 13135aea3dcdSIlya Dryomov 13145aea3dcdSIlya Dryomov dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); 13155aea3dcdSIlya Dryomov return osd; 1316a40c4f10SYehuda Sadeh } 1317a40c4f10SYehuda Sadeh 13183d14c5d2SYehuda Sadeh /* 13195aea3dcdSIlya Dryomov * Create request <-> OSD session relation. 13205aea3dcdSIlya Dryomov * 13215aea3dcdSIlya Dryomov * @req has to be assigned a tid, @osd may be homeless. 13223d14c5d2SYehuda Sadeh */ 13235aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) 13243d14c5d2SYehuda Sadeh { 13255aea3dcdSIlya Dryomov verify_osd_locked(osd); 13265aea3dcdSIlya Dryomov WARN_ON(!req->r_tid || req->r_osd); 13275aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 132835f9f8a0SSage Weil req, req->r_tid); 13295aea3dcdSIlya Dryomov 13305aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 13315aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 13325aea3dcdSIlya Dryomov else 13335aea3dcdSIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 13345aea3dcdSIlya Dryomov 13355aea3dcdSIlya Dryomov get_osd(osd); 13365aea3dcdSIlya Dryomov insert_request(&osd->o_requests, req); 13375aea3dcdSIlya Dryomov req->r_osd = osd; 133835f9f8a0SSage Weil } 133935f9f8a0SSage Weil 13405aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) 13413d14c5d2SYehuda Sadeh { 13425aea3dcdSIlya Dryomov verify_osd_locked(osd); 13435aea3dcdSIlya Dryomov WARN_ON(req->r_osd != osd); 13445aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 13455aea3dcdSIlya Dryomov req, req->r_tid); 13465aea3dcdSIlya Dryomov 13475aea3dcdSIlya Dryomov req->r_osd = NULL; 13485aea3dcdSIlya Dryomov erase_request(&osd->o_requests, req); 13495aea3dcdSIlya Dryomov put_osd(osd); 13505aea3dcdSIlya Dryomov 13515aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 13525aea3dcdSIlya Dryomov maybe_move_osd_to_lru(osd); 13535aea3dcdSIlya Dryomov else 13545aea3dcdSIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 13553d14c5d2SYehuda Sadeh } 13563d14c5d2SYehuda Sadeh 135763244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 135863244fa1SIlya Dryomov { 135963244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 136063244fa1SIlya Dryomov } 136163244fa1SIlya Dryomov 136242c1b124SIlya Dryomov static bool have_pool_full(struct ceph_osd_client *osdc) 136342c1b124SIlya Dryomov { 136442c1b124SIlya Dryomov struct rb_node *n; 136542c1b124SIlya Dryomov 136642c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 136742c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 136842c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 136942c1b124SIlya Dryomov 137042c1b124SIlya Dryomov if (__pool_full(pi)) 137142c1b124SIlya Dryomov return true; 137242c1b124SIlya Dryomov } 137342c1b124SIlya Dryomov 137442c1b124SIlya Dryomov return false; 137542c1b124SIlya Dryomov } 137642c1b124SIlya Dryomov 13775aea3dcdSIlya Dryomov static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) 13785aea3dcdSIlya Dryomov { 13795aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 13805aea3dcdSIlya Dryomov 13815aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 13825aea3dcdSIlya Dryomov if (!pi) 13835aea3dcdSIlya Dryomov return false; 13845aea3dcdSIlya Dryomov 13855aea3dcdSIlya Dryomov return __pool_full(pi); 13865aea3dcdSIlya Dryomov } 13875aea3dcdSIlya Dryomov 13883d14c5d2SYehuda Sadeh /* 1389d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1390d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1391d29adb34SJosh Durgin */ 139263244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 139363244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 139463244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 139563244fa1SIlya Dryomov { 1396b7ec35b3SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 1397b7ec35b3SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 1398b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 139963244fa1SIlya Dryomov __pool_full(pi); 140063244fa1SIlya Dryomov 14016d637a54SIlya Dryomov WARN_ON(pi->id != t->target_oloc.pool); 140258eb7932SJeff Layton return ((t->flags & CEPH_OSD_FLAG_READ) && pauserd) || 140358eb7932SJeff Layton ((t->flags & CEPH_OSD_FLAG_WRITE) && pausewr) || 140458eb7932SJeff Layton (osdc->osdmap->epoch < osdc->epoch_barrier); 140563244fa1SIlya Dryomov } 140663244fa1SIlya Dryomov 140763244fa1SIlya Dryomov enum calc_target_result { 140863244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 140963244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 141063244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 141163244fa1SIlya Dryomov }; 141263244fa1SIlya Dryomov 141363244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 141463244fa1SIlya Dryomov struct ceph_osd_request_target *t, 14157de030d6SIlya Dryomov struct ceph_connection *con, 141663244fa1SIlya Dryomov bool any_change) 141763244fa1SIlya Dryomov { 141863244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 141963244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 142063244fa1SIlya Dryomov struct ceph_osds up, acting; 142163244fa1SIlya Dryomov bool force_resend = false; 142284ed45dfSIlya Dryomov bool unpaused = false; 142384ed45dfSIlya Dryomov bool legacy_change; 14247de030d6SIlya Dryomov bool split = false; 1425b7ec35b3SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); 1426ae78dd81SIlya Dryomov bool recovery_deletes = ceph_osdmap_flag(osdc, 1427ae78dd81SIlya Dryomov CEPH_OSDMAP_RECOVERY_DELETES); 142863244fa1SIlya Dryomov enum calc_target_result ct_res; 142963244fa1SIlya Dryomov 143004c7d789SIlya Dryomov t->epoch = osdc->osdmap->epoch; 143163244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 143263244fa1SIlya Dryomov if (!pi) { 143363244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 143463244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 143563244fa1SIlya Dryomov goto out; 143663244fa1SIlya Dryomov } 143763244fa1SIlya Dryomov 143863244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 1439dc93e0e2SIlya Dryomov if (t->last_force_resend < pi->last_force_request_resend) { 1440dc93e0e2SIlya Dryomov t->last_force_resend = pi->last_force_request_resend; 144163244fa1SIlya Dryomov force_resend = true; 1442dc93e0e2SIlya Dryomov } else if (t->last_force_resend == 0) { 144363244fa1SIlya Dryomov force_resend = true; 144463244fa1SIlya Dryomov } 144563244fa1SIlya Dryomov } 144663244fa1SIlya Dryomov 1447db098ec4SIlya Dryomov /* apply tiering */ 1448db098ec4SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 1449db098ec4SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 1450db098ec4SIlya Dryomov if ((t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 145163244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) 145263244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 145363244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) 145463244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 14556d637a54SIlya Dryomov 14566d637a54SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->target_oloc.pool); 14576d637a54SIlya Dryomov if (!pi) { 14586d637a54SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 14596d637a54SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 14606d637a54SIlya Dryomov goto out; 14616d637a54SIlya Dryomov } 146263244fa1SIlya Dryomov } 146363244fa1SIlya Dryomov 1464a86f009fSIlya Dryomov __ceph_object_locator_to_pg(pi, &t->target_oid, &t->target_oloc, &pgid); 146563244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 146663244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 146763244fa1SIlya Dryomov 1468df28152dSIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, pi, &pgid, &up, &acting); 146963244fa1SIlya Dryomov if (any_change && 147063244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 147163244fa1SIlya Dryomov &acting, 147263244fa1SIlya Dryomov &t->up, 147363244fa1SIlya Dryomov &up, 147463244fa1SIlya Dryomov t->size, 147563244fa1SIlya Dryomov pi->size, 147663244fa1SIlya Dryomov t->min_size, 147763244fa1SIlya Dryomov pi->min_size, 147863244fa1SIlya Dryomov t->pg_num, 147963244fa1SIlya Dryomov pi->pg_num, 148063244fa1SIlya Dryomov t->sort_bitwise, 148163244fa1SIlya Dryomov sort_bitwise, 1482ae78dd81SIlya Dryomov t->recovery_deletes, 1483ae78dd81SIlya Dryomov recovery_deletes, 148463244fa1SIlya Dryomov &last_pgid)) 148563244fa1SIlya Dryomov force_resend = true; 148663244fa1SIlya Dryomov 148763244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 148863244fa1SIlya Dryomov t->paused = false; 148984ed45dfSIlya Dryomov unpaused = true; 149063244fa1SIlya Dryomov } 149184ed45dfSIlya Dryomov legacy_change = ceph_pg_compare(&t->pgid, &pgid) || 149284ed45dfSIlya Dryomov ceph_osds_changed(&t->acting, &acting, any_change); 14937de030d6SIlya Dryomov if (t->pg_num) 14947de030d6SIlya Dryomov split = ceph_pg_is_split(&last_pgid, t->pg_num, pi->pg_num); 149563244fa1SIlya Dryomov 14967de030d6SIlya Dryomov if (legacy_change || force_resend || split) { 149763244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 1498df28152dSIlya Dryomov ceph_pg_to_primary_shard(osdc->osdmap, pi, &pgid, &t->spgid); 149963244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 150063244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 150163244fa1SIlya Dryomov t->size = pi->size; 150263244fa1SIlya Dryomov t->min_size = pi->min_size; 150363244fa1SIlya Dryomov t->pg_num = pi->pg_num; 150463244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 150563244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 1506ae78dd81SIlya Dryomov t->recovery_deletes = recovery_deletes; 150763244fa1SIlya Dryomov 150863244fa1SIlya Dryomov t->osd = acting.primary; 150963244fa1SIlya Dryomov } 151063244fa1SIlya Dryomov 15117de030d6SIlya Dryomov if (unpaused || legacy_change || force_resend || 15127de030d6SIlya Dryomov (split && con && CEPH_HAVE_FEATURE(con->peer_features, 15137de030d6SIlya Dryomov RESEND_ON_SPLIT))) 151484ed45dfSIlya Dryomov ct_res = CALC_TARGET_NEED_RESEND; 151584ed45dfSIlya Dryomov else 151684ed45dfSIlya Dryomov ct_res = CALC_TARGET_NO_ACTION; 151784ed45dfSIlya Dryomov 151863244fa1SIlya Dryomov out: 151963244fa1SIlya Dryomov dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); 152063244fa1SIlya Dryomov return ct_res; 152163244fa1SIlya Dryomov } 152263244fa1SIlya Dryomov 1523a02a946dSIlya Dryomov static struct ceph_spg_mapping *alloc_spg_mapping(void) 1524a02a946dSIlya Dryomov { 1525a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1526a02a946dSIlya Dryomov 1527a02a946dSIlya Dryomov spg = kmalloc(sizeof(*spg), GFP_NOIO); 1528a02a946dSIlya Dryomov if (!spg) 1529a02a946dSIlya Dryomov return NULL; 1530a02a946dSIlya Dryomov 1531a02a946dSIlya Dryomov RB_CLEAR_NODE(&spg->node); 1532a02a946dSIlya Dryomov spg->backoffs = RB_ROOT; 1533a02a946dSIlya Dryomov return spg; 1534a02a946dSIlya Dryomov } 1535a02a946dSIlya Dryomov 1536a02a946dSIlya Dryomov static void free_spg_mapping(struct ceph_spg_mapping *spg) 1537a02a946dSIlya Dryomov { 1538a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&spg->node)); 1539a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&spg->backoffs)); 1540a02a946dSIlya Dryomov 1541a02a946dSIlya Dryomov kfree(spg); 1542a02a946dSIlya Dryomov } 1543a02a946dSIlya Dryomov 1544a02a946dSIlya Dryomov /* 1545a02a946dSIlya Dryomov * rbtree of ceph_spg_mapping for handling map<spg_t, ...>, similar to 1546a02a946dSIlya Dryomov * ceph_pg_mapping. Used to track OSD backoffs -- a backoff [range] is 1547a02a946dSIlya Dryomov * defined only within a specific spgid; it does not pass anything to 1548a02a946dSIlya Dryomov * children on split, or to another primary. 1549a02a946dSIlya Dryomov */ 1550a02a946dSIlya Dryomov DEFINE_RB_FUNCS2(spg_mapping, struct ceph_spg_mapping, spgid, ceph_spg_compare, 1551a02a946dSIlya Dryomov RB_BYPTR, const struct ceph_spg *, node) 1552a02a946dSIlya Dryomov 1553a02a946dSIlya Dryomov static u64 hoid_get_bitwise_key(const struct ceph_hobject_id *hoid) 1554a02a946dSIlya Dryomov { 1555a02a946dSIlya Dryomov return hoid->is_max ? 0x100000000ull : hoid->hash_reverse_bits; 1556a02a946dSIlya Dryomov } 1557a02a946dSIlya Dryomov 1558a02a946dSIlya Dryomov static void hoid_get_effective_key(const struct ceph_hobject_id *hoid, 1559a02a946dSIlya Dryomov void **pkey, size_t *pkey_len) 1560a02a946dSIlya Dryomov { 1561a02a946dSIlya Dryomov if (hoid->key_len) { 1562a02a946dSIlya Dryomov *pkey = hoid->key; 1563a02a946dSIlya Dryomov *pkey_len = hoid->key_len; 1564a02a946dSIlya Dryomov } else { 1565a02a946dSIlya Dryomov *pkey = hoid->oid; 1566a02a946dSIlya Dryomov *pkey_len = hoid->oid_len; 1567a02a946dSIlya Dryomov } 1568a02a946dSIlya Dryomov } 1569a02a946dSIlya Dryomov 1570a02a946dSIlya Dryomov static int compare_names(const void *name1, size_t name1_len, 1571a02a946dSIlya Dryomov const void *name2, size_t name2_len) 1572a02a946dSIlya Dryomov { 1573a02a946dSIlya Dryomov int ret; 1574a02a946dSIlya Dryomov 1575a02a946dSIlya Dryomov ret = memcmp(name1, name2, min(name1_len, name2_len)); 1576a02a946dSIlya Dryomov if (!ret) { 1577a02a946dSIlya Dryomov if (name1_len < name2_len) 1578a02a946dSIlya Dryomov ret = -1; 1579a02a946dSIlya Dryomov else if (name1_len > name2_len) 1580a02a946dSIlya Dryomov ret = 1; 1581a02a946dSIlya Dryomov } 1582a02a946dSIlya Dryomov return ret; 1583a02a946dSIlya Dryomov } 1584a02a946dSIlya Dryomov 1585a02a946dSIlya Dryomov static int hoid_compare(const struct ceph_hobject_id *lhs, 1586a02a946dSIlya Dryomov const struct ceph_hobject_id *rhs) 1587a02a946dSIlya Dryomov { 1588a02a946dSIlya Dryomov void *effective_key1, *effective_key2; 1589a02a946dSIlya Dryomov size_t effective_key1_len, effective_key2_len; 1590a02a946dSIlya Dryomov int ret; 1591a02a946dSIlya Dryomov 1592a02a946dSIlya Dryomov if (lhs->is_max < rhs->is_max) 1593a02a946dSIlya Dryomov return -1; 1594a02a946dSIlya Dryomov if (lhs->is_max > rhs->is_max) 1595a02a946dSIlya Dryomov return 1; 1596a02a946dSIlya Dryomov 1597a02a946dSIlya Dryomov if (lhs->pool < rhs->pool) 1598a02a946dSIlya Dryomov return -1; 1599a02a946dSIlya Dryomov if (lhs->pool > rhs->pool) 1600a02a946dSIlya Dryomov return 1; 1601a02a946dSIlya Dryomov 1602a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) < hoid_get_bitwise_key(rhs)) 1603a02a946dSIlya Dryomov return -1; 1604a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) > hoid_get_bitwise_key(rhs)) 1605a02a946dSIlya Dryomov return 1; 1606a02a946dSIlya Dryomov 1607a02a946dSIlya Dryomov ret = compare_names(lhs->nspace, lhs->nspace_len, 1608a02a946dSIlya Dryomov rhs->nspace, rhs->nspace_len); 1609a02a946dSIlya Dryomov if (ret) 1610a02a946dSIlya Dryomov return ret; 1611a02a946dSIlya Dryomov 1612a02a946dSIlya Dryomov hoid_get_effective_key(lhs, &effective_key1, &effective_key1_len); 1613a02a946dSIlya Dryomov hoid_get_effective_key(rhs, &effective_key2, &effective_key2_len); 1614a02a946dSIlya Dryomov ret = compare_names(effective_key1, effective_key1_len, 1615a02a946dSIlya Dryomov effective_key2, effective_key2_len); 1616a02a946dSIlya Dryomov if (ret) 1617a02a946dSIlya Dryomov return ret; 1618a02a946dSIlya Dryomov 1619a02a946dSIlya Dryomov ret = compare_names(lhs->oid, lhs->oid_len, rhs->oid, rhs->oid_len); 1620a02a946dSIlya Dryomov if (ret) 1621a02a946dSIlya Dryomov return ret; 1622a02a946dSIlya Dryomov 1623a02a946dSIlya Dryomov if (lhs->snapid < rhs->snapid) 1624a02a946dSIlya Dryomov return -1; 1625a02a946dSIlya Dryomov if (lhs->snapid > rhs->snapid) 1626a02a946dSIlya Dryomov return 1; 1627a02a946dSIlya Dryomov 1628a02a946dSIlya Dryomov return 0; 1629a02a946dSIlya Dryomov } 1630a02a946dSIlya Dryomov 1631a02a946dSIlya Dryomov /* 1632a02a946dSIlya Dryomov * For decoding ->begin and ->end of MOSDBackoff only -- no MIN/MAX 1633a02a946dSIlya Dryomov * compat stuff here. 1634a02a946dSIlya Dryomov * 1635a02a946dSIlya Dryomov * Assumes @hoid is zero-initialized. 1636a02a946dSIlya Dryomov */ 1637a02a946dSIlya Dryomov static int decode_hoid(void **p, void *end, struct ceph_hobject_id *hoid) 1638a02a946dSIlya Dryomov { 1639a02a946dSIlya Dryomov u8 struct_v; 1640a02a946dSIlya Dryomov u32 struct_len; 1641a02a946dSIlya Dryomov int ret; 1642a02a946dSIlya Dryomov 1643a02a946dSIlya Dryomov ret = ceph_start_decoding(p, end, 4, "hobject_t", &struct_v, 1644a02a946dSIlya Dryomov &struct_len); 1645a02a946dSIlya Dryomov if (ret) 1646a02a946dSIlya Dryomov return ret; 1647a02a946dSIlya Dryomov 1648a02a946dSIlya Dryomov if (struct_v < 4) { 1649a02a946dSIlya Dryomov pr_err("got struct_v %d < 4 of hobject_t\n", struct_v); 1650a02a946dSIlya Dryomov goto e_inval; 1651a02a946dSIlya Dryomov } 1652a02a946dSIlya Dryomov 1653a02a946dSIlya Dryomov hoid->key = ceph_extract_encoded_string(p, end, &hoid->key_len, 1654a02a946dSIlya Dryomov GFP_NOIO); 1655a02a946dSIlya Dryomov if (IS_ERR(hoid->key)) { 1656a02a946dSIlya Dryomov ret = PTR_ERR(hoid->key); 1657a02a946dSIlya Dryomov hoid->key = NULL; 1658a02a946dSIlya Dryomov return ret; 1659a02a946dSIlya Dryomov } 1660a02a946dSIlya Dryomov 1661a02a946dSIlya Dryomov hoid->oid = ceph_extract_encoded_string(p, end, &hoid->oid_len, 1662a02a946dSIlya Dryomov GFP_NOIO); 1663a02a946dSIlya Dryomov if (IS_ERR(hoid->oid)) { 1664a02a946dSIlya Dryomov ret = PTR_ERR(hoid->oid); 1665a02a946dSIlya Dryomov hoid->oid = NULL; 1666a02a946dSIlya Dryomov return ret; 1667a02a946dSIlya Dryomov } 1668a02a946dSIlya Dryomov 1669a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->snapid, e_inval); 1670a02a946dSIlya Dryomov ceph_decode_32_safe(p, end, hoid->hash, e_inval); 1671a02a946dSIlya Dryomov ceph_decode_8_safe(p, end, hoid->is_max, e_inval); 1672a02a946dSIlya Dryomov 1673a02a946dSIlya Dryomov hoid->nspace = ceph_extract_encoded_string(p, end, &hoid->nspace_len, 1674a02a946dSIlya Dryomov GFP_NOIO); 1675a02a946dSIlya Dryomov if (IS_ERR(hoid->nspace)) { 1676a02a946dSIlya Dryomov ret = PTR_ERR(hoid->nspace); 1677a02a946dSIlya Dryomov hoid->nspace = NULL; 1678a02a946dSIlya Dryomov return ret; 1679a02a946dSIlya Dryomov } 1680a02a946dSIlya Dryomov 1681a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->pool, e_inval); 1682a02a946dSIlya Dryomov 1683a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1684a02a946dSIlya Dryomov return 0; 1685a02a946dSIlya Dryomov 1686a02a946dSIlya Dryomov e_inval: 1687a02a946dSIlya Dryomov return -EINVAL; 1688a02a946dSIlya Dryomov } 1689a02a946dSIlya Dryomov 1690a02a946dSIlya Dryomov static int hoid_encoding_size(const struct ceph_hobject_id *hoid) 1691a02a946dSIlya Dryomov { 1692a02a946dSIlya Dryomov return 8 + 4 + 1 + 8 + /* snapid, hash, is_max, pool */ 1693a02a946dSIlya Dryomov 4 + hoid->key_len + 4 + hoid->oid_len + 4 + hoid->nspace_len; 1694a02a946dSIlya Dryomov } 1695a02a946dSIlya Dryomov 1696a02a946dSIlya Dryomov static void encode_hoid(void **p, void *end, const struct ceph_hobject_id *hoid) 1697a02a946dSIlya Dryomov { 1698a02a946dSIlya Dryomov ceph_start_encoding(p, 4, 3, hoid_encoding_size(hoid)); 1699a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->key, hoid->key_len); 1700a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->oid, hoid->oid_len); 1701a02a946dSIlya Dryomov ceph_encode_64(p, hoid->snapid); 1702a02a946dSIlya Dryomov ceph_encode_32(p, hoid->hash); 1703a02a946dSIlya Dryomov ceph_encode_8(p, hoid->is_max); 1704a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->nspace, hoid->nspace_len); 1705a02a946dSIlya Dryomov ceph_encode_64(p, hoid->pool); 1706a02a946dSIlya Dryomov } 1707a02a946dSIlya Dryomov 1708a02a946dSIlya Dryomov static void free_hoid(struct ceph_hobject_id *hoid) 1709a02a946dSIlya Dryomov { 1710a02a946dSIlya Dryomov if (hoid) { 1711a02a946dSIlya Dryomov kfree(hoid->key); 1712a02a946dSIlya Dryomov kfree(hoid->oid); 1713a02a946dSIlya Dryomov kfree(hoid->nspace); 1714a02a946dSIlya Dryomov kfree(hoid); 1715a02a946dSIlya Dryomov } 1716a02a946dSIlya Dryomov } 1717a02a946dSIlya Dryomov 1718a02a946dSIlya Dryomov static struct ceph_osd_backoff *alloc_backoff(void) 1719a02a946dSIlya Dryomov { 1720a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1721a02a946dSIlya Dryomov 1722a02a946dSIlya Dryomov backoff = kzalloc(sizeof(*backoff), GFP_NOIO); 1723a02a946dSIlya Dryomov if (!backoff) 1724a02a946dSIlya Dryomov return NULL; 1725a02a946dSIlya Dryomov 1726a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->spg_node); 1727a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->id_node); 1728a02a946dSIlya Dryomov return backoff; 1729a02a946dSIlya Dryomov } 1730a02a946dSIlya Dryomov 1731a02a946dSIlya Dryomov static void free_backoff(struct ceph_osd_backoff *backoff) 1732a02a946dSIlya Dryomov { 1733a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->spg_node)); 1734a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->id_node)); 1735a02a946dSIlya Dryomov 1736a02a946dSIlya Dryomov free_hoid(backoff->begin); 1737a02a946dSIlya Dryomov free_hoid(backoff->end); 1738a02a946dSIlya Dryomov kfree(backoff); 1739a02a946dSIlya Dryomov } 1740a02a946dSIlya Dryomov 1741a02a946dSIlya Dryomov /* 1742a02a946dSIlya Dryomov * Within a specific spgid, backoffs are managed by ->begin hoid. 1743a02a946dSIlya Dryomov */ 1744a02a946dSIlya Dryomov DEFINE_RB_INSDEL_FUNCS2(backoff, struct ceph_osd_backoff, begin, hoid_compare, 1745a02a946dSIlya Dryomov RB_BYVAL, spg_node); 1746a02a946dSIlya Dryomov 1747a02a946dSIlya Dryomov static struct ceph_osd_backoff *lookup_containing_backoff(struct rb_root *root, 1748a02a946dSIlya Dryomov const struct ceph_hobject_id *hoid) 1749a02a946dSIlya Dryomov { 1750a02a946dSIlya Dryomov struct rb_node *n = root->rb_node; 1751a02a946dSIlya Dryomov 1752a02a946dSIlya Dryomov while (n) { 1753a02a946dSIlya Dryomov struct ceph_osd_backoff *cur = 1754a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_backoff, spg_node); 1755a02a946dSIlya Dryomov int cmp; 1756a02a946dSIlya Dryomov 1757a02a946dSIlya Dryomov cmp = hoid_compare(hoid, cur->begin); 1758a02a946dSIlya Dryomov if (cmp < 0) { 1759a02a946dSIlya Dryomov n = n->rb_left; 1760a02a946dSIlya Dryomov } else if (cmp > 0) { 1761a02a946dSIlya Dryomov if (hoid_compare(hoid, cur->end) < 0) 1762a02a946dSIlya Dryomov return cur; 1763a02a946dSIlya Dryomov 1764a02a946dSIlya Dryomov n = n->rb_right; 1765a02a946dSIlya Dryomov } else { 1766a02a946dSIlya Dryomov return cur; 1767a02a946dSIlya Dryomov } 1768a02a946dSIlya Dryomov } 1769a02a946dSIlya Dryomov 1770a02a946dSIlya Dryomov return NULL; 1771a02a946dSIlya Dryomov } 1772a02a946dSIlya Dryomov 1773a02a946dSIlya Dryomov /* 1774a02a946dSIlya Dryomov * Each backoff has a unique id within its OSD session. 1775a02a946dSIlya Dryomov */ 1776a02a946dSIlya Dryomov DEFINE_RB_FUNCS(backoff_by_id, struct ceph_osd_backoff, id, id_node) 1777a02a946dSIlya Dryomov 1778a02a946dSIlya Dryomov static void clear_backoffs(struct ceph_osd *osd) 1779a02a946dSIlya Dryomov { 1780a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&osd->o_backoff_mappings)) { 1781a02a946dSIlya Dryomov struct ceph_spg_mapping *spg = 1782a02a946dSIlya Dryomov rb_entry(rb_first(&osd->o_backoff_mappings), 1783a02a946dSIlya Dryomov struct ceph_spg_mapping, node); 1784a02a946dSIlya Dryomov 1785a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&spg->backoffs)) { 1786a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff = 1787a02a946dSIlya Dryomov rb_entry(rb_first(&spg->backoffs), 1788a02a946dSIlya Dryomov struct ceph_osd_backoff, spg_node); 1789a02a946dSIlya Dryomov 1790a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 1791a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 1792a02a946dSIlya Dryomov free_backoff(backoff); 1793a02a946dSIlya Dryomov } 1794a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 1795a02a946dSIlya Dryomov free_spg_mapping(spg); 1796a02a946dSIlya Dryomov } 1797a02a946dSIlya Dryomov } 1798a02a946dSIlya Dryomov 1799a02a946dSIlya Dryomov /* 1800a02a946dSIlya Dryomov * Set up a temporary, non-owning view into @t. 1801a02a946dSIlya Dryomov */ 1802a02a946dSIlya Dryomov static void hoid_fill_from_target(struct ceph_hobject_id *hoid, 1803a02a946dSIlya Dryomov const struct ceph_osd_request_target *t) 1804a02a946dSIlya Dryomov { 1805a02a946dSIlya Dryomov hoid->key = NULL; 1806a02a946dSIlya Dryomov hoid->key_len = 0; 1807a02a946dSIlya Dryomov hoid->oid = t->target_oid.name; 1808a02a946dSIlya Dryomov hoid->oid_len = t->target_oid.name_len; 1809a02a946dSIlya Dryomov hoid->snapid = CEPH_NOSNAP; 1810a02a946dSIlya Dryomov hoid->hash = t->pgid.seed; 1811a02a946dSIlya Dryomov hoid->is_max = false; 1812a02a946dSIlya Dryomov if (t->target_oloc.pool_ns) { 1813a02a946dSIlya Dryomov hoid->nspace = t->target_oloc.pool_ns->str; 1814a02a946dSIlya Dryomov hoid->nspace_len = t->target_oloc.pool_ns->len; 1815a02a946dSIlya Dryomov } else { 1816a02a946dSIlya Dryomov hoid->nspace = NULL; 1817a02a946dSIlya Dryomov hoid->nspace_len = 0; 1818a02a946dSIlya Dryomov } 1819a02a946dSIlya Dryomov hoid->pool = t->target_oloc.pool; 1820a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1821a02a946dSIlya Dryomov } 1822a02a946dSIlya Dryomov 1823a02a946dSIlya Dryomov static bool should_plug_request(struct ceph_osd_request *req) 1824a02a946dSIlya Dryomov { 1825a02a946dSIlya Dryomov struct ceph_osd *osd = req->r_osd; 1826a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1827a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1828a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 1829a02a946dSIlya Dryomov 1830a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &req->r_t.spgid); 1831a02a946dSIlya Dryomov if (!spg) 1832a02a946dSIlya Dryomov return false; 1833a02a946dSIlya Dryomov 1834a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, &req->r_t); 1835a02a946dSIlya Dryomov backoff = lookup_containing_backoff(&spg->backoffs, &hoid); 1836a02a946dSIlya Dryomov if (!backoff) 1837a02a946dSIlya Dryomov return false; 1838a02a946dSIlya Dryomov 1839a02a946dSIlya Dryomov dout("%s req %p tid %llu backoff osd%d spgid %llu.%xs%d id %llu\n", 1840a02a946dSIlya Dryomov __func__, req, req->r_tid, osd->o_osd, backoff->spgid.pgid.pool, 1841a02a946dSIlya Dryomov backoff->spgid.pgid.seed, backoff->spgid.shard, backoff->id); 1842a02a946dSIlya Dryomov return true; 1843a02a946dSIlya Dryomov } 1844a02a946dSIlya Dryomov 1845bb873b53SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req, 1846bb873b53SIlya Dryomov struct ceph_msg *msg) 18473d14c5d2SYehuda Sadeh { 1848bb873b53SIlya Dryomov u32 data_len = 0; 1849bb873b53SIlya Dryomov int i; 18503d14c5d2SYehuda Sadeh 1851bb873b53SIlya Dryomov if (!list_empty(&msg->data)) 1852bb873b53SIlya Dryomov return; 18533d14c5d2SYehuda Sadeh 1854bb873b53SIlya Dryomov WARN_ON(msg->data_length); 1855bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1856bb873b53SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[i]; 1857bb873b53SIlya Dryomov 1858bb873b53SIlya Dryomov switch (op->op) { 1859bb873b53SIlya Dryomov /* request */ 1860bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 1861bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 1862bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 1863bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->extent.osd_data); 1864bb873b53SIlya Dryomov break; 1865bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 1866bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 1867bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 1868bb873b53SIlya Dryomov op->xattr.value_len); 1869bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->xattr.osd_data); 1870bb873b53SIlya Dryomov break; 1871922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 1872922dab61SIlya Dryomov ceph_osdc_msg_data_add(msg, 1873922dab61SIlya Dryomov &op->notify_ack.request_data); 1874922dab61SIlya Dryomov break; 1875bb873b53SIlya Dryomov 1876bb873b53SIlya Dryomov /* reply */ 1877bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 1878bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1879bb873b53SIlya Dryomov &op->raw_data_in); 1880bb873b53SIlya Dryomov break; 1881bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 1882bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1883bb873b53SIlya Dryomov &op->extent.osd_data); 1884bb873b53SIlya Dryomov break; 1885a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 1886a4ed38d7SDouglas Fuller ceph_osdc_msg_data_add(req->r_reply, 1887a4ed38d7SDouglas Fuller &op->list_watchers.response_data); 1888a4ed38d7SDouglas Fuller break; 1889bb873b53SIlya Dryomov 1890bb873b53SIlya Dryomov /* both */ 1891bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 1892bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 1893bb873b53SIlya Dryomov op->cls.method_len + 1894bb873b53SIlya Dryomov op->cls.indata_len); 1895bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_info); 1896bb873b53SIlya Dryomov /* optional, can be NONE */ 1897bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_data); 1898bb873b53SIlya Dryomov /* optional, can be NONE */ 1899bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1900bb873b53SIlya Dryomov &op->cls.response_data); 1901bb873b53SIlya Dryomov break; 190219079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 190319079203SIlya Dryomov ceph_osdc_msg_data_add(msg, 190419079203SIlya Dryomov &op->notify.request_data); 190519079203SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 190619079203SIlya Dryomov &op->notify.response_data); 190719079203SIlya Dryomov break; 1908bb873b53SIlya Dryomov } 1909bb873b53SIlya Dryomov 1910bb873b53SIlya Dryomov data_len += op->indata_len; 1911bb873b53SIlya Dryomov } 1912bb873b53SIlya Dryomov 1913bb873b53SIlya Dryomov WARN_ON(data_len != msg->data_length); 1914bb873b53SIlya Dryomov } 1915bb873b53SIlya Dryomov 19162e59ffd1SIlya Dryomov static void encode_pgid(void **p, const struct ceph_pg *pgid) 19172e59ffd1SIlya Dryomov { 19182e59ffd1SIlya Dryomov ceph_encode_8(p, 1); 19192e59ffd1SIlya Dryomov ceph_encode_64(p, pgid->pool); 19202e59ffd1SIlya Dryomov ceph_encode_32(p, pgid->seed); 19212e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 19222e59ffd1SIlya Dryomov } 19232e59ffd1SIlya Dryomov 19248cb441c0SIlya Dryomov static void encode_spgid(void **p, const struct ceph_spg *spgid) 19258cb441c0SIlya Dryomov { 19268cb441c0SIlya Dryomov ceph_start_encoding(p, 1, 1, CEPH_PGID_ENCODING_LEN + 1); 19278cb441c0SIlya Dryomov encode_pgid(p, &spgid->pgid); 19288cb441c0SIlya Dryomov ceph_encode_8(p, spgid->shard); 19298cb441c0SIlya Dryomov } 19308cb441c0SIlya Dryomov 19312e59ffd1SIlya Dryomov static void encode_oloc(void **p, void *end, 19322e59ffd1SIlya Dryomov const struct ceph_object_locator *oloc) 19332e59ffd1SIlya Dryomov { 19342e59ffd1SIlya Dryomov ceph_start_encoding(p, 5, 4, ceph_oloc_encoding_size(oloc)); 19352e59ffd1SIlya Dryomov ceph_encode_64(p, oloc->pool); 19362e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 19372e59ffd1SIlya Dryomov ceph_encode_32(p, 0); /* key len */ 19382e59ffd1SIlya Dryomov if (oloc->pool_ns) 19392e59ffd1SIlya Dryomov ceph_encode_string(p, end, oloc->pool_ns->str, 19402e59ffd1SIlya Dryomov oloc->pool_ns->len); 19412e59ffd1SIlya Dryomov else 19422e59ffd1SIlya Dryomov ceph_encode_32(p, 0); 19432e59ffd1SIlya Dryomov } 19442e59ffd1SIlya Dryomov 19458cb441c0SIlya Dryomov static void encode_request_partial(struct ceph_osd_request *req, 19468cb441c0SIlya Dryomov struct ceph_msg *msg) 1947bb873b53SIlya Dryomov { 1948bb873b53SIlya Dryomov void *p = msg->front.iov_base; 1949bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 1950bb873b53SIlya Dryomov u32 data_len = 0; 1951bb873b53SIlya Dryomov int i; 1952bb873b53SIlya Dryomov 1953bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 1954bb873b53SIlya Dryomov /* snapshots aren't writeable */ 1955bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 1956bb873b53SIlya Dryomov } else { 1957bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 1958bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 1959bb873b53SIlya Dryomov } 1960bb873b53SIlya Dryomov 1961bb873b53SIlya Dryomov setup_request_data(req, msg); 1962bb873b53SIlya Dryomov 19638cb441c0SIlya Dryomov encode_spgid(&p, &req->r_t.spgid); /* actual spg */ 19648cb441c0SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); /* raw hash */ 1965bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 1966bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 19678cb441c0SIlya Dryomov 19688cb441c0SIlya Dryomov /* reqid */ 19698cb441c0SIlya Dryomov ceph_start_encoding(&p, 2, 2, sizeof(struct ceph_osd_reqid)); 19708cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_osd_reqid)); 19718cb441c0SIlya Dryomov p += sizeof(struct ceph_osd_reqid); 19728cb441c0SIlya Dryomov 19738cb441c0SIlya Dryomov /* trace */ 19748cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_blkin_trace_info)); 19758cb441c0SIlya Dryomov p += sizeof(struct ceph_blkin_trace_info); 19768cb441c0SIlya Dryomov 19778cb441c0SIlya Dryomov ceph_encode_32(&p, 0); /* client_inc, always 0 */ 1978fac02ddfSArnd Bergmann ceph_encode_timespec64(p, &req->r_mtime); 1979bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 1980aa26d662SJeff Layton 19812e59ffd1SIlya Dryomov encode_oloc(&p, end, &req->r_t.target_oloc); 19822e59ffd1SIlya Dryomov ceph_encode_string(&p, end, req->r_t.target_oid.name, 19832e59ffd1SIlya Dryomov req->r_t.target_oid.name_len); 1984bb873b53SIlya Dryomov 1985bb873b53SIlya Dryomov /* ops, can imply data */ 1986bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 1987bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1988bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 1989bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 1990bb873b53SIlya Dryomov } 1991bb873b53SIlya Dryomov 1992bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 1993bb873b53SIlya Dryomov if (req->r_snapc) { 1994bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 1995bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 1996bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 1997bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 1998bb873b53SIlya Dryomov } else { 1999bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 2000bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 2001bb873b53SIlya Dryomov } 2002bb873b53SIlya Dryomov 2003bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 2004986e8989SIlya Dryomov BUG_ON(p > end - 8); /* space for features */ 2005bb873b53SIlya Dryomov 20068cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(8); /* MOSDOp v8 */ 20078cb441c0SIlya Dryomov /* front_len is finalized in encode_request_finish() */ 2008986e8989SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 2009986e8989SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 2010bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 2011bb873b53SIlya Dryomov /* 2012bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 2013bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 2014bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 2015bb873b53SIlya Dryomov */ 2016bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 2017bb873b53SIlya Dryomov 20188cb441c0SIlya Dryomov dout("%s req %p msg %p oid %s oid_len %d\n", __func__, req, msg, 20198cb441c0SIlya Dryomov req->r_t.target_oid.name, req->r_t.target_oid.name_len); 20208cb441c0SIlya Dryomov } 20218cb441c0SIlya Dryomov 20228cb441c0SIlya Dryomov static void encode_request_finish(struct ceph_msg *msg) 20238cb441c0SIlya Dryomov { 20248cb441c0SIlya Dryomov void *p = msg->front.iov_base; 2025986e8989SIlya Dryomov void *const partial_end = p + msg->front.iov_len; 20268cb441c0SIlya Dryomov void *const end = p + msg->front_alloc_len; 20278cb441c0SIlya Dryomov 20288cb441c0SIlya Dryomov if (CEPH_HAVE_FEATURE(msg->con->peer_features, RESEND_ON_SPLIT)) { 20298cb441c0SIlya Dryomov /* luminous OSD -- encode features and be done */ 2030986e8989SIlya Dryomov p = partial_end; 20318cb441c0SIlya Dryomov ceph_encode_64(&p, msg->con->peer_features); 20328cb441c0SIlya Dryomov } else { 20338cb441c0SIlya Dryomov struct { 20348cb441c0SIlya Dryomov char spgid[CEPH_ENCODING_START_BLK_LEN + 20358cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1]; 20368cb441c0SIlya Dryomov __le32 hash; 20378cb441c0SIlya Dryomov __le32 epoch; 20388cb441c0SIlya Dryomov __le32 flags; 20398cb441c0SIlya Dryomov char reqid[CEPH_ENCODING_START_BLK_LEN + 20408cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid)]; 20418cb441c0SIlya Dryomov char trace[sizeof(struct ceph_blkin_trace_info)]; 20428cb441c0SIlya Dryomov __le32 client_inc; 20438cb441c0SIlya Dryomov struct ceph_timespec mtime; 20448cb441c0SIlya Dryomov } __packed head; 20458cb441c0SIlya Dryomov struct ceph_pg pgid; 20468cb441c0SIlya Dryomov void *oloc, *oid, *tail; 20478cb441c0SIlya Dryomov int oloc_len, oid_len, tail_len; 20488cb441c0SIlya Dryomov int len; 20498cb441c0SIlya Dryomov 20508cb441c0SIlya Dryomov /* 20518cb441c0SIlya Dryomov * Pre-luminous OSD -- reencode v8 into v4 using @head 20528cb441c0SIlya Dryomov * as a temporary buffer. Encode the raw PG; the rest 20538cb441c0SIlya Dryomov * is just a matter of moving oloc, oid and tail blobs 20548cb441c0SIlya Dryomov * around. 20558cb441c0SIlya Dryomov */ 20568cb441c0SIlya Dryomov memcpy(&head, p, sizeof(head)); 20578cb441c0SIlya Dryomov p += sizeof(head); 20588cb441c0SIlya Dryomov 20598cb441c0SIlya Dryomov oloc = p; 20608cb441c0SIlya Dryomov p += CEPH_ENCODING_START_BLK_LEN; 20618cb441c0SIlya Dryomov pgid.pool = ceph_decode_64(&p); 20628cb441c0SIlya Dryomov p += 4 + 4; /* preferred, key len */ 20638cb441c0SIlya Dryomov len = ceph_decode_32(&p); 20648cb441c0SIlya Dryomov p += len; /* nspace */ 20658cb441c0SIlya Dryomov oloc_len = p - oloc; 20668cb441c0SIlya Dryomov 20678cb441c0SIlya Dryomov oid = p; 20688cb441c0SIlya Dryomov len = ceph_decode_32(&p); 20698cb441c0SIlya Dryomov p += len; 20708cb441c0SIlya Dryomov oid_len = p - oid; 20718cb441c0SIlya Dryomov 20728cb441c0SIlya Dryomov tail = p; 2073986e8989SIlya Dryomov tail_len = partial_end - p; 20748cb441c0SIlya Dryomov 20758cb441c0SIlya Dryomov p = msg->front.iov_base; 20768cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.client_inc, sizeof(head.client_inc)); 20778cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.epoch, sizeof(head.epoch)); 20788cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.flags, sizeof(head.flags)); 20798cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.mtime, sizeof(head.mtime)); 20808cb441c0SIlya Dryomov 20818cb441c0SIlya Dryomov /* reassert_version */ 20828cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_eversion)); 20838cb441c0SIlya Dryomov p += sizeof(struct ceph_eversion); 20848cb441c0SIlya Dryomov 20858cb441c0SIlya Dryomov BUG_ON(p >= oloc); 20868cb441c0SIlya Dryomov memmove(p, oloc, oloc_len); 20878cb441c0SIlya Dryomov p += oloc_len; 20888cb441c0SIlya Dryomov 20898cb441c0SIlya Dryomov pgid.seed = le32_to_cpu(head.hash); 20908cb441c0SIlya Dryomov encode_pgid(&p, &pgid); /* raw pg */ 20918cb441c0SIlya Dryomov 20928cb441c0SIlya Dryomov BUG_ON(p >= oid); 20938cb441c0SIlya Dryomov memmove(p, oid, oid_len); 20948cb441c0SIlya Dryomov p += oid_len; 20958cb441c0SIlya Dryomov 20968cb441c0SIlya Dryomov /* tail -- ops, snapid, snapc, retry_attempt */ 20978cb441c0SIlya Dryomov BUG_ON(p >= tail); 20988cb441c0SIlya Dryomov memmove(p, tail, tail_len); 20998cb441c0SIlya Dryomov p += tail_len; 21008cb441c0SIlya Dryomov 21018cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 21028cb441c0SIlya Dryomov } 21038cb441c0SIlya Dryomov 21048cb441c0SIlya Dryomov BUG_ON(p > end); 21058cb441c0SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 21068cb441c0SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 21078cb441c0SIlya Dryomov 21088cb441c0SIlya Dryomov dout("%s msg %p tid %llu %u+%u+%u v%d\n", __func__, msg, 21098cb441c0SIlya Dryomov le64_to_cpu(msg->hdr.tid), le32_to_cpu(msg->hdr.front_len), 21108cb441c0SIlya Dryomov le32_to_cpu(msg->hdr.middle_len), le32_to_cpu(msg->hdr.data_len), 21118cb441c0SIlya Dryomov le16_to_cpu(msg->hdr.version)); 2112bb873b53SIlya Dryomov } 2113bb873b53SIlya Dryomov 2114bb873b53SIlya Dryomov /* 2115bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 2116bb873b53SIlya Dryomov */ 2117bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 2118bb873b53SIlya Dryomov { 2119bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 2120bb873b53SIlya Dryomov 21215aea3dcdSIlya Dryomov verify_osd_locked(osd); 2122bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 2123bb873b53SIlya Dryomov 2124a02a946dSIlya Dryomov /* backoff? */ 2125a02a946dSIlya Dryomov if (should_plug_request(req)) 2126a02a946dSIlya Dryomov return; 2127a02a946dSIlya Dryomov 21285aea3dcdSIlya Dryomov /* 21295aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 21305aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 21315aea3dcdSIlya Dryomov */ 21325aea3dcdSIlya Dryomov if (req->r_sent) 21335aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 21345aea3dcdSIlya Dryomov 2135bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 2136bb873b53SIlya Dryomov if (req->r_attempts) 2137bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 2138bb873b53SIlya Dryomov else 2139bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 2140bb873b53SIlya Dryomov 21418cb441c0SIlya Dryomov encode_request_partial(req, req->r_request); 2142bb873b53SIlya Dryomov 214304c7d789SIlya 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", 2144bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 2145dc98ff72SIlya Dryomov req->r_t.spgid.pgid.pool, req->r_t.spgid.pgid.seed, 214604c7d789SIlya Dryomov req->r_t.spgid.shard, osd->o_osd, req->r_t.epoch, req->r_flags, 214704c7d789SIlya Dryomov req->r_attempts); 2148bb873b53SIlya Dryomov 2149bb873b53SIlya Dryomov req->r_t.paused = false; 21503d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 2151bb873b53SIlya Dryomov req->r_attempts++; 21523d14c5d2SYehuda Sadeh 2153bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 2154bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 2155bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 21563d14c5d2SYehuda Sadeh } 21573d14c5d2SYehuda Sadeh 215842c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 215942c1b124SIlya Dryomov { 216042c1b124SIlya Dryomov bool continuous = false; 216142c1b124SIlya Dryomov 21625aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 216342c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 216442c1b124SIlya Dryomov 2165b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2166b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || 2167b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 216842c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 216942c1b124SIlya Dryomov continuous = true; 217042c1b124SIlya Dryomov } else { 217142c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 217242c1b124SIlya Dryomov } 217342c1b124SIlya Dryomov 217442c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 217542c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 217642c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 217742c1b124SIlya Dryomov } 217842c1b124SIlya Dryomov 2179a1f4020aSJeff Layton static void complete_request(struct ceph_osd_request *req, int err); 21804609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req); 21814609245eSIlya Dryomov 21825aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 21830bbfdfe8SIlya Dryomov { 21845aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 21855aea3dcdSIlya Dryomov struct ceph_osd *osd; 21864609245eSIlya Dryomov enum calc_target_result ct_res; 218766850df5SIlya Dryomov int err = 0; 21885aea3dcdSIlya Dryomov bool need_send = false; 21895aea3dcdSIlya Dryomov bool promoted = false; 21900bbfdfe8SIlya Dryomov 2191b18b9550SIlya Dryomov WARN_ON(req->r_tid); 21925aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 21935aea3dcdSIlya Dryomov 21945aea3dcdSIlya Dryomov again: 21957de030d6SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, NULL, false); 21964609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) 21974609245eSIlya Dryomov goto promote; 21984609245eSIlya Dryomov 21995aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 22005aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 22015aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 22025aea3dcdSIlya Dryomov goto promote; 22035aea3dcdSIlya Dryomov } 22045aea3dcdSIlya Dryomov 220566850df5SIlya Dryomov if (osdc->abort_err) { 220666850df5SIlya Dryomov dout("req %p abort_err %d\n", req, osdc->abort_err); 220766850df5SIlya Dryomov err = osdc->abort_err; 220866850df5SIlya Dryomov } else if (osdc->osdmap->epoch < osdc->epoch_barrier) { 220958eb7932SJeff Layton dout("req %p epoch %u barrier %u\n", req, osdc->osdmap->epoch, 221058eb7932SJeff Layton osdc->epoch_barrier); 221158eb7932SJeff Layton req->r_t.paused = true; 221258eb7932SJeff Layton maybe_request_map(osdc); 221358eb7932SJeff Layton } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 2214b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 22155aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 22165aea3dcdSIlya Dryomov req->r_t.paused = true; 22175aea3dcdSIlya Dryomov maybe_request_map(osdc); 22185aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 2219b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 22205aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 22215aea3dcdSIlya Dryomov req->r_t.paused = true; 22225aea3dcdSIlya Dryomov maybe_request_map(osdc); 22235aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 22245aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 22255aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 2226b7ec35b3SIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 22275aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 22285aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 2229c843d13cSIlya Dryomov if (osdc->abort_on_full) { 223029e87820SIlya Dryomov err = -ENOSPC; 223129e87820SIlya Dryomov } else { 22325aea3dcdSIlya Dryomov pr_warn_ratelimited("FULL or reached pool quota\n"); 22335aea3dcdSIlya Dryomov req->r_t.paused = true; 22345aea3dcdSIlya Dryomov maybe_request_map(osdc); 223529e87820SIlya Dryomov } 22365aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 22375aea3dcdSIlya Dryomov need_send = true; 22380bbfdfe8SIlya Dryomov } else { 22395aea3dcdSIlya Dryomov maybe_request_map(osdc); 22400bbfdfe8SIlya Dryomov } 22410bbfdfe8SIlya Dryomov 22425aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 22435aea3dcdSIlya Dryomov /* 22445aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 22455aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 22465aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 22475aea3dcdSIlya Dryomov */ 22485aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 22495aea3dcdSIlya Dryomov link_request(osd, req); 22505aea3dcdSIlya Dryomov if (need_send) 22515aea3dcdSIlya Dryomov send_request(req); 225266850df5SIlya Dryomov else if (err) 225366850df5SIlya Dryomov complete_request(req, err); 22545aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 22555aea3dcdSIlya Dryomov 22566001567cSIlya Dryomov if (!err && ct_res == CALC_TARGET_POOL_DNE) 22574609245eSIlya Dryomov send_map_check(req); 22584609245eSIlya Dryomov 22595aea3dcdSIlya Dryomov if (promoted) 22605aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 22615aea3dcdSIlya Dryomov return; 22625aea3dcdSIlya Dryomov 22635aea3dcdSIlya Dryomov promote: 22645aea3dcdSIlya Dryomov up_read(&osdc->lock); 22655aea3dcdSIlya Dryomov down_write(&osdc->lock); 22665aea3dcdSIlya Dryomov wrlocked = true; 22675aea3dcdSIlya Dryomov promoted = true; 22685aea3dcdSIlya Dryomov goto again; 22690bbfdfe8SIlya Dryomov } 22700bbfdfe8SIlya Dryomov 22715aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 22725aea3dcdSIlya Dryomov { 227354ea0046SIlya Dryomov WARN_ON(req->r_flags & (CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK)); 2274b18b9550SIlya Dryomov WARN_ON(!(req->r_flags & (CEPH_OSD_FLAG_READ | CEPH_OSD_FLAG_WRITE))); 22755aea3dcdSIlya Dryomov 2276b18b9550SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ONDISK; 22775aea3dcdSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 22787cc5e38fSIlya Dryomov 22797cc5e38fSIlya Dryomov req->r_start_stamp = jiffies; 22805aea3dcdSIlya Dryomov } 22815aea3dcdSIlya Dryomov 22825aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 22835aea3dcdSIlya Dryomov { 22845aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 22855aea3dcdSIlya Dryomov account_request(req); 22865aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 22875aea3dcdSIlya Dryomov } 22885aea3dcdSIlya Dryomov 228945ee2c1dSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 22905aea3dcdSIlya Dryomov { 22915aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 22925aea3dcdSIlya Dryomov 22934609245eSIlya Dryomov WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); 229404c7d789SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 229504c7d789SIlya Dryomov 229604c7d789SIlya Dryomov if (req->r_osd) 229704c7d789SIlya Dryomov unlink_request(req->r_osd, req); 22985aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 22995aea3dcdSIlya Dryomov 23005aea3dcdSIlya Dryomov /* 23015aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 23025aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 23035aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 23045aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 23055aea3dcdSIlya Dryomov */ 23065aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 23075aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 23085aea3dcdSIlya Dryomov } 23095aea3dcdSIlya Dryomov 2310fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 2311fe5da05eSIlya Dryomov { 2312b18b9550SIlya Dryomov dout("%s req %p tid %llu cb %pf result %d\n", __func__, req, 2313b18b9550SIlya Dryomov req->r_tid, req->r_callback, req->r_result); 231426df726bSIlya Dryomov 231526df726bSIlya Dryomov if (req->r_callback) 2316fe5da05eSIlya Dryomov req->r_callback(req); 231726df726bSIlya Dryomov complete_all(&req->r_completion); 231826df726bSIlya Dryomov ceph_osdc_put_request(req); 2319b18b9550SIlya Dryomov } 2320fe5da05eSIlya Dryomov 232188bc1922SIlya Dryomov static void complete_request_workfn(struct work_struct *work) 232288bc1922SIlya Dryomov { 232388bc1922SIlya Dryomov struct ceph_osd_request *req = 232488bc1922SIlya Dryomov container_of(work, struct ceph_osd_request, r_complete_work); 232588bc1922SIlya Dryomov 232688bc1922SIlya Dryomov __complete_request(req); 23270bbfdfe8SIlya Dryomov } 23280bbfdfe8SIlya Dryomov 23294609245eSIlya Dryomov /* 2330b18b9550SIlya Dryomov * This is open-coded in handle_reply(). 23314609245eSIlya Dryomov */ 23324609245eSIlya Dryomov static void complete_request(struct ceph_osd_request *req, int err) 23334609245eSIlya Dryomov { 23344609245eSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 23354609245eSIlya Dryomov 23364609245eSIlya Dryomov req->r_result = err; 233745ee2c1dSIlya Dryomov finish_request(req); 233888bc1922SIlya Dryomov 233988bc1922SIlya Dryomov INIT_WORK(&req->r_complete_work, complete_request_workfn); 234088bc1922SIlya Dryomov queue_work(req->r_osdc->completion_wq, &req->r_complete_work); 23414609245eSIlya Dryomov } 23424609245eSIlya Dryomov 23434609245eSIlya Dryomov static void cancel_map_check(struct ceph_osd_request *req) 23444609245eSIlya Dryomov { 23454609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 23464609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 23474609245eSIlya Dryomov 23484609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 23494609245eSIlya Dryomov 23504609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 23514609245eSIlya Dryomov if (!lookup_req) 23524609245eSIlya Dryomov return; 23534609245eSIlya Dryomov 23544609245eSIlya Dryomov WARN_ON(lookup_req != req); 23554609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 23564609245eSIlya Dryomov ceph_osdc_put_request(req); 23574609245eSIlya Dryomov } 23584609245eSIlya Dryomov 23595aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 23605aea3dcdSIlya Dryomov { 23615aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 23625aea3dcdSIlya Dryomov 23634609245eSIlya Dryomov cancel_map_check(req); 236445ee2c1dSIlya Dryomov finish_request(req); 2365b18b9550SIlya Dryomov complete_all(&req->r_completion); 2366c297eb42SIlya Dryomov ceph_osdc_put_request(req); 23675aea3dcdSIlya Dryomov } 23685aea3dcdSIlya Dryomov 23697cc5e38fSIlya Dryomov static void abort_request(struct ceph_osd_request *req, int err) 23707cc5e38fSIlya Dryomov { 23717cc5e38fSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 23727cc5e38fSIlya Dryomov 23737cc5e38fSIlya Dryomov cancel_map_check(req); 23747cc5e38fSIlya Dryomov complete_request(req, err); 23757cc5e38fSIlya Dryomov } 23767cc5e38fSIlya Dryomov 237766850df5SIlya Dryomov static int abort_fn(struct ceph_osd_request *req, void *arg) 237866850df5SIlya Dryomov { 237966850df5SIlya Dryomov int err = *(int *)arg; 238066850df5SIlya Dryomov 238166850df5SIlya Dryomov abort_request(req, err); 238266850df5SIlya Dryomov return 0; /* continue iteration */ 238366850df5SIlya Dryomov } 238466850df5SIlya Dryomov 238566850df5SIlya Dryomov /* 238666850df5SIlya Dryomov * Abort all in-flight requests with @err and arrange for all future 238766850df5SIlya Dryomov * requests to be failed immediately. 238866850df5SIlya Dryomov */ 238966850df5SIlya Dryomov void ceph_osdc_abort_requests(struct ceph_osd_client *osdc, int err) 239066850df5SIlya Dryomov { 239166850df5SIlya Dryomov dout("%s osdc %p err %d\n", __func__, osdc, err); 239266850df5SIlya Dryomov down_write(&osdc->lock); 239366850df5SIlya Dryomov for_each_request(osdc, abort_fn, &err); 239466850df5SIlya Dryomov osdc->abort_err = err; 239566850df5SIlya Dryomov up_write(&osdc->lock); 239666850df5SIlya Dryomov } 239766850df5SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_abort_requests); 239866850df5SIlya Dryomov 239958eb7932SJeff Layton static void update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 240058eb7932SJeff Layton { 240158eb7932SJeff Layton if (likely(eb > osdc->epoch_barrier)) { 240258eb7932SJeff Layton dout("updating epoch_barrier from %u to %u\n", 240358eb7932SJeff Layton osdc->epoch_barrier, eb); 240458eb7932SJeff Layton osdc->epoch_barrier = eb; 240558eb7932SJeff Layton /* Request map if we're not to the barrier yet */ 240658eb7932SJeff Layton if (eb > osdc->osdmap->epoch) 240758eb7932SJeff Layton maybe_request_map(osdc); 240858eb7932SJeff Layton } 240958eb7932SJeff Layton } 241058eb7932SJeff Layton 241158eb7932SJeff Layton void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 241258eb7932SJeff Layton { 241358eb7932SJeff Layton down_read(&osdc->lock); 241458eb7932SJeff Layton if (unlikely(eb > osdc->epoch_barrier)) { 241558eb7932SJeff Layton up_read(&osdc->lock); 241658eb7932SJeff Layton down_write(&osdc->lock); 241758eb7932SJeff Layton update_epoch_barrier(osdc, eb); 241858eb7932SJeff Layton up_write(&osdc->lock); 241958eb7932SJeff Layton } else { 242058eb7932SJeff Layton up_read(&osdc->lock); 242158eb7932SJeff Layton } 242258eb7932SJeff Layton } 242358eb7932SJeff Layton EXPORT_SYMBOL(ceph_osdc_update_epoch_barrier); 242458eb7932SJeff Layton 2425fc36d0a4SJeff Layton /* 24264eea0fefSIlya Dryomov * We can end up releasing caps as a result of abort_request(). 24274eea0fefSIlya Dryomov * In that case, we probably want to ensure that the cap release message 24284eea0fefSIlya Dryomov * has an updated epoch barrier in it, so set the epoch barrier prior to 24294eea0fefSIlya Dryomov * aborting the first request. 24304eea0fefSIlya Dryomov */ 24314eea0fefSIlya Dryomov static int abort_on_full_fn(struct ceph_osd_request *req, void *arg) 24324eea0fefSIlya Dryomov { 24334eea0fefSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 24344eea0fefSIlya Dryomov bool *victims = arg; 24354eea0fefSIlya Dryomov 2436c843d13cSIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 24374eea0fefSIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2438690f951dSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 24394eea0fefSIlya Dryomov if (!*victims) { 24404eea0fefSIlya Dryomov update_epoch_barrier(osdc, osdc->osdmap->epoch); 24414eea0fefSIlya Dryomov *victims = true; 24424eea0fefSIlya Dryomov } 24434eea0fefSIlya Dryomov abort_request(req, -ENOSPC); 24444eea0fefSIlya Dryomov } 24454eea0fefSIlya Dryomov 24464eea0fefSIlya Dryomov return 0; /* continue iteration */ 24474eea0fefSIlya Dryomov } 24484eea0fefSIlya Dryomov 24494eea0fefSIlya Dryomov /* 2450fc36d0a4SJeff Layton * Drop all pending requests that are stalled waiting on a full condition to 245158eb7932SJeff Layton * clear, and complete them with ENOSPC as the return code. Set the 245258eb7932SJeff Layton * osdc->epoch_barrier to the latest map epoch that we've seen if any were 245358eb7932SJeff Layton * cancelled. 2454fc36d0a4SJeff Layton */ 2455fc36d0a4SJeff Layton static void ceph_osdc_abort_on_full(struct ceph_osd_client *osdc) 2456fc36d0a4SJeff Layton { 245758eb7932SJeff Layton bool victims = false; 2458fc36d0a4SJeff Layton 2459c843d13cSIlya Dryomov if (osdc->abort_on_full && 2460c843d13cSIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || have_pool_full(osdc))) 24614eea0fefSIlya Dryomov for_each_request(osdc, abort_on_full_fn, &victims); 2462fc36d0a4SJeff Layton } 2463fc36d0a4SJeff Layton 24644609245eSIlya Dryomov static void check_pool_dne(struct ceph_osd_request *req) 24654609245eSIlya Dryomov { 24664609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 24674609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 24684609245eSIlya Dryomov 24694609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 24704609245eSIlya Dryomov WARN_ON(!map->epoch); 24714609245eSIlya Dryomov 24724609245eSIlya Dryomov if (req->r_attempts) { 24734609245eSIlya Dryomov /* 24744609245eSIlya Dryomov * We sent a request earlier, which means that 24754609245eSIlya Dryomov * previously the pool existed, and now it does not 24764609245eSIlya Dryomov * (i.e., it was deleted). 24774609245eSIlya Dryomov */ 24784609245eSIlya Dryomov req->r_map_dne_bound = map->epoch; 24794609245eSIlya Dryomov dout("%s req %p tid %llu pool disappeared\n", __func__, req, 24804609245eSIlya Dryomov req->r_tid); 24814609245eSIlya Dryomov } else { 24824609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, 24834609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, map->epoch); 24844609245eSIlya Dryomov } 24854609245eSIlya Dryomov 24864609245eSIlya Dryomov if (req->r_map_dne_bound) { 24874609245eSIlya Dryomov if (map->epoch >= req->r_map_dne_bound) { 24884609245eSIlya Dryomov /* we had a new enough map */ 24894609245eSIlya Dryomov pr_info_ratelimited("tid %llu pool does not exist\n", 24904609245eSIlya Dryomov req->r_tid); 24914609245eSIlya Dryomov complete_request(req, -ENOENT); 24924609245eSIlya Dryomov } 24934609245eSIlya Dryomov } else { 24944609245eSIlya Dryomov send_map_check(req); 24954609245eSIlya Dryomov } 24964609245eSIlya Dryomov } 24974609245eSIlya Dryomov 24984609245eSIlya Dryomov static void map_check_cb(struct ceph_mon_generic_request *greq) 24994609245eSIlya Dryomov { 25004609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 25014609245eSIlya Dryomov struct ceph_osd_request *req; 25024609245eSIlya Dryomov u64 tid = greq->private_data; 25034609245eSIlya Dryomov 25044609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 25054609245eSIlya Dryomov 25064609245eSIlya Dryomov down_write(&osdc->lock); 25074609245eSIlya Dryomov req = lookup_request_mc(&osdc->map_checks, tid); 25084609245eSIlya Dryomov if (!req) { 25094609245eSIlya Dryomov dout("%s tid %llu dne\n", __func__, tid); 25104609245eSIlya Dryomov goto out_unlock; 25114609245eSIlya Dryomov } 25124609245eSIlya Dryomov 25134609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, 25144609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, greq->u.newest); 25154609245eSIlya Dryomov if (!req->r_map_dne_bound) 25164609245eSIlya Dryomov req->r_map_dne_bound = greq->u.newest; 25174609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 25184609245eSIlya Dryomov check_pool_dne(req); 25194609245eSIlya Dryomov 25204609245eSIlya Dryomov ceph_osdc_put_request(req); 25214609245eSIlya Dryomov out_unlock: 25224609245eSIlya Dryomov up_write(&osdc->lock); 25234609245eSIlya Dryomov } 25244609245eSIlya Dryomov 25254609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req) 25264609245eSIlya Dryomov { 25274609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 25284609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 25294609245eSIlya Dryomov int ret; 25304609245eSIlya Dryomov 25314609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 25324609245eSIlya Dryomov 25334609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 25344609245eSIlya Dryomov if (lookup_req) { 25354609245eSIlya Dryomov WARN_ON(lookup_req != req); 25364609245eSIlya Dryomov return; 25374609245eSIlya Dryomov } 25384609245eSIlya Dryomov 25394609245eSIlya Dryomov ceph_osdc_get_request(req); 25404609245eSIlya Dryomov insert_request_mc(&osdc->map_checks, req); 25414609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 25424609245eSIlya Dryomov map_check_cb, req->r_tid); 25434609245eSIlya Dryomov WARN_ON(ret); 25444609245eSIlya Dryomov } 25454609245eSIlya Dryomov 25460bbfdfe8SIlya Dryomov /* 2547922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 2548922dab61SIlya Dryomov */ 2549922dab61SIlya Dryomov static void linger_release(struct kref *kref) 2550922dab61SIlya Dryomov { 2551922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2552922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 2553922dab61SIlya Dryomov 2554922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 2555922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 2556922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 2557922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 25584609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); 2559922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 2560b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lreq->pending_lworks)); 2561922dab61SIlya Dryomov WARN_ON(lreq->osd); 2562922dab61SIlya Dryomov 2563922dab61SIlya Dryomov if (lreq->reg_req) 2564922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 2565922dab61SIlya Dryomov if (lreq->ping_req) 2566922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 2567922dab61SIlya Dryomov target_destroy(&lreq->t); 2568922dab61SIlya Dryomov kfree(lreq); 2569922dab61SIlya Dryomov } 2570922dab61SIlya Dryomov 2571922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 2572922dab61SIlya Dryomov { 2573922dab61SIlya Dryomov if (lreq) 2574922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 2575922dab61SIlya Dryomov } 2576922dab61SIlya Dryomov 2577922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2578922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 2579922dab61SIlya Dryomov { 2580922dab61SIlya Dryomov kref_get(&lreq->kref); 2581922dab61SIlya Dryomov return lreq; 2582922dab61SIlya Dryomov } 2583922dab61SIlya Dryomov 2584922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2585922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 2586922dab61SIlya Dryomov { 2587922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2588922dab61SIlya Dryomov 2589922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 2590922dab61SIlya Dryomov if (!lreq) 2591922dab61SIlya Dryomov return NULL; 2592922dab61SIlya Dryomov 2593922dab61SIlya Dryomov kref_init(&lreq->kref); 2594922dab61SIlya Dryomov mutex_init(&lreq->lock); 2595922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 2596922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 25974609245eSIlya Dryomov RB_CLEAR_NODE(&lreq->mc_node); 2598922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 2599b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lreq->pending_lworks); 2600922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 260119079203SIlya Dryomov init_completion(&lreq->notify_finish_wait); 2602922dab61SIlya Dryomov 2603922dab61SIlya Dryomov lreq->osdc = osdc; 2604922dab61SIlya Dryomov target_init(&lreq->t); 2605922dab61SIlya Dryomov 2606922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 2607922dab61SIlya Dryomov return lreq; 2608922dab61SIlya Dryomov } 2609922dab61SIlya Dryomov 2610922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 2611922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 26124609245eSIlya Dryomov DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) 2613922dab61SIlya Dryomov 2614922dab61SIlya Dryomov /* 2615922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 2616922dab61SIlya Dryomov * 2617922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 2618922dab61SIlya Dryomov */ 2619922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 2620922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2621922dab61SIlya Dryomov { 2622922dab61SIlya Dryomov verify_osd_locked(osd); 2623922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 2624922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2625922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2626922dab61SIlya Dryomov 2627922dab61SIlya Dryomov if (!osd_homeless(osd)) 2628922dab61SIlya Dryomov __remove_osd_from_lru(osd); 2629922dab61SIlya Dryomov else 2630922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 2631922dab61SIlya Dryomov 2632922dab61SIlya Dryomov get_osd(osd); 2633922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 2634922dab61SIlya Dryomov lreq->osd = osd; 2635922dab61SIlya Dryomov } 2636922dab61SIlya Dryomov 2637922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 2638922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2639922dab61SIlya Dryomov { 2640922dab61SIlya Dryomov verify_osd_locked(osd); 2641922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 2642922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2643922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2644922dab61SIlya Dryomov 2645922dab61SIlya Dryomov lreq->osd = NULL; 2646922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 2647922dab61SIlya Dryomov put_osd(osd); 2648922dab61SIlya Dryomov 2649922dab61SIlya Dryomov if (!osd_homeless(osd)) 2650922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 2651922dab61SIlya Dryomov else 2652922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 2653922dab61SIlya Dryomov } 2654922dab61SIlya Dryomov 2655922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 2656922dab61SIlya Dryomov { 2657922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 2658922dab61SIlya Dryomov 2659922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 2660922dab61SIlya Dryomov } 2661922dab61SIlya Dryomov 2662922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 2663922dab61SIlya Dryomov { 2664922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2665922dab61SIlya Dryomov bool registered; 2666922dab61SIlya Dryomov 2667922dab61SIlya Dryomov down_read(&osdc->lock); 2668922dab61SIlya Dryomov registered = __linger_registered(lreq); 2669922dab61SIlya Dryomov up_read(&osdc->lock); 2670922dab61SIlya Dryomov 2671922dab61SIlya Dryomov return registered; 2672922dab61SIlya Dryomov } 2673922dab61SIlya Dryomov 2674922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 2675922dab61SIlya Dryomov { 2676922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2677922dab61SIlya Dryomov 2678922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2679922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 2680922dab61SIlya Dryomov 2681922dab61SIlya Dryomov linger_get(lreq); 2682922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 2683922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 2684922dab61SIlya Dryomov } 2685922dab61SIlya Dryomov 2686922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 2687922dab61SIlya Dryomov { 2688922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2689922dab61SIlya Dryomov 2690922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2691922dab61SIlya Dryomov 2692922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 2693922dab61SIlya Dryomov linger_put(lreq); 2694922dab61SIlya Dryomov } 2695922dab61SIlya Dryomov 2696922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 2697922dab61SIlya Dryomov { 2698922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2699922dab61SIlya Dryomov 2700922dab61SIlya Dryomov WARN_ON(!req->r_linger); 2701922dab61SIlya Dryomov cancel_request(req); 2702922dab61SIlya Dryomov linger_put(lreq); 2703922dab61SIlya Dryomov } 2704922dab61SIlya Dryomov 2705922dab61SIlya Dryomov struct linger_work { 2706922dab61SIlya Dryomov struct work_struct work; 2707922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2708b07d3c4bSIlya Dryomov struct list_head pending_item; 2709b07d3c4bSIlya Dryomov unsigned long queued_stamp; 2710922dab61SIlya Dryomov 2711922dab61SIlya Dryomov union { 2712922dab61SIlya Dryomov struct { 2713922dab61SIlya Dryomov u64 notify_id; 2714922dab61SIlya Dryomov u64 notifier_id; 2715922dab61SIlya Dryomov void *payload; /* points into @msg front */ 2716922dab61SIlya Dryomov size_t payload_len; 2717922dab61SIlya Dryomov 2718922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 2719922dab61SIlya Dryomov } notify; 2720922dab61SIlya Dryomov struct { 2721922dab61SIlya Dryomov int err; 2722922dab61SIlya Dryomov } error; 2723922dab61SIlya Dryomov }; 2724922dab61SIlya Dryomov }; 2725922dab61SIlya Dryomov 2726922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 2727922dab61SIlya Dryomov work_func_t workfn) 2728922dab61SIlya Dryomov { 2729922dab61SIlya Dryomov struct linger_work *lwork; 2730922dab61SIlya Dryomov 2731922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 2732922dab61SIlya Dryomov if (!lwork) 2733922dab61SIlya Dryomov return NULL; 2734922dab61SIlya Dryomov 2735922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 2736b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lwork->pending_item); 2737922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 2738922dab61SIlya Dryomov 2739922dab61SIlya Dryomov return lwork; 2740922dab61SIlya Dryomov } 2741922dab61SIlya Dryomov 2742922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 2743922dab61SIlya Dryomov { 2744922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2745922dab61SIlya Dryomov 2746b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 2747b07d3c4bSIlya Dryomov list_del(&lwork->pending_item); 2748b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 2749b07d3c4bSIlya Dryomov 2750922dab61SIlya Dryomov linger_put(lreq); 2751922dab61SIlya Dryomov kfree(lwork); 2752922dab61SIlya Dryomov } 2753922dab61SIlya Dryomov 2754922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 2755922dab61SIlya Dryomov { 2756922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2757922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2758922dab61SIlya Dryomov 2759922dab61SIlya Dryomov verify_lreq_locked(lreq); 2760b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lwork->pending_item)); 2761b07d3c4bSIlya Dryomov 2762b07d3c4bSIlya Dryomov lwork->queued_stamp = jiffies; 2763b07d3c4bSIlya Dryomov list_add_tail(&lwork->pending_item, &lreq->pending_lworks); 2764922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 2765922dab61SIlya Dryomov } 2766922dab61SIlya Dryomov 2767922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 2768922dab61SIlya Dryomov { 2769922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2770922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2771922dab61SIlya Dryomov 2772922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2773922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2774922dab61SIlya Dryomov goto out; 2775922dab61SIlya Dryomov } 2776922dab61SIlya Dryomov 277719079203SIlya Dryomov WARN_ON(!lreq->is_watch); 2778922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 2779922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 2780922dab61SIlya Dryomov lwork->notify.payload_len); 2781922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 2782922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 2783922dab61SIlya Dryomov lwork->notify.payload_len); 2784922dab61SIlya Dryomov 2785922dab61SIlya Dryomov out: 2786922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 2787922dab61SIlya Dryomov lwork_free(lwork); 2788922dab61SIlya Dryomov } 2789922dab61SIlya Dryomov 2790922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 2791922dab61SIlya Dryomov { 2792922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2793922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2794922dab61SIlya Dryomov 2795922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2796922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2797922dab61SIlya Dryomov goto out; 2798922dab61SIlya Dryomov } 2799922dab61SIlya Dryomov 2800922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 2801922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 2802922dab61SIlya Dryomov 2803922dab61SIlya Dryomov out: 2804922dab61SIlya Dryomov lwork_free(lwork); 2805922dab61SIlya Dryomov } 2806922dab61SIlya Dryomov 2807922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 2808922dab61SIlya Dryomov { 2809922dab61SIlya Dryomov struct linger_work *lwork; 2810922dab61SIlya Dryomov 2811922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 2812922dab61SIlya Dryomov if (!lwork) { 2813922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 2814922dab61SIlya Dryomov return; 2815922dab61SIlya Dryomov } 2816922dab61SIlya Dryomov 2817922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 2818922dab61SIlya Dryomov lwork_queue(lwork); 2819922dab61SIlya Dryomov } 2820922dab61SIlya Dryomov 2821922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 2822922dab61SIlya Dryomov int result) 2823922dab61SIlya Dryomov { 2824922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 2825922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 2826922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 2827922dab61SIlya Dryomov } 2828922dab61SIlya Dryomov } 2829922dab61SIlya Dryomov 2830922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 2831922dab61SIlya Dryomov { 2832922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2833922dab61SIlya Dryomov 2834922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2835922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 2836922dab61SIlya Dryomov lreq->linger_id, req->r_result); 2837922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 2838922dab61SIlya Dryomov lreq->committed = true; 2839922dab61SIlya Dryomov 284019079203SIlya Dryomov if (!lreq->is_watch) { 284119079203SIlya Dryomov struct ceph_osd_data *osd_data = 284219079203SIlya Dryomov osd_req_op_data(req, 0, notify, response_data); 284319079203SIlya Dryomov void *p = page_address(osd_data->pages[0]); 284419079203SIlya Dryomov 284519079203SIlya Dryomov WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || 284619079203SIlya Dryomov osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); 284719079203SIlya Dryomov 284819079203SIlya Dryomov /* make note of the notify_id */ 284919079203SIlya Dryomov if (req->r_ops[0].outdata_len >= sizeof(u64)) { 285019079203SIlya Dryomov lreq->notify_id = ceph_decode_64(&p); 285119079203SIlya Dryomov dout("lreq %p notify_id %llu\n", lreq, 285219079203SIlya Dryomov lreq->notify_id); 285319079203SIlya Dryomov } else { 285419079203SIlya Dryomov dout("lreq %p no notify_id\n", lreq); 285519079203SIlya Dryomov } 285619079203SIlya Dryomov } 285719079203SIlya Dryomov 2858922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2859922dab61SIlya Dryomov linger_put(lreq); 2860922dab61SIlya Dryomov } 2861922dab61SIlya Dryomov 2862922dab61SIlya Dryomov static int normalize_watch_error(int err) 2863922dab61SIlya Dryomov { 2864922dab61SIlya Dryomov /* 2865922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 2866922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 2867922dab61SIlya Dryomov * the delete appear the same to the user. 2868922dab61SIlya Dryomov */ 2869922dab61SIlya Dryomov if (err == -ENOENT) 2870922dab61SIlya Dryomov err = -ENOTCONN; 2871922dab61SIlya Dryomov 2872922dab61SIlya Dryomov return err; 2873922dab61SIlya Dryomov } 2874922dab61SIlya Dryomov 2875922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 2876922dab61SIlya Dryomov { 2877922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2878922dab61SIlya Dryomov 2879922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2880922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 2881922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 2882922dab61SIlya Dryomov if (req->r_result < 0) { 2883922dab61SIlya Dryomov if (!lreq->last_error) { 2884922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2885922dab61SIlya Dryomov queue_watch_error(lreq); 2886922dab61SIlya Dryomov } 2887922dab61SIlya Dryomov } 2888922dab61SIlya Dryomov 2889922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2890922dab61SIlya Dryomov linger_put(lreq); 2891922dab61SIlya Dryomov } 2892922dab61SIlya Dryomov 2893922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 2894922dab61SIlya Dryomov { 2895922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->reg_req; 2896922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2897922dab61SIlya Dryomov 2898922dab61SIlya Dryomov verify_osdc_wrlocked(req->r_osdc); 2899922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2900922dab61SIlya Dryomov 2901922dab61SIlya Dryomov if (req->r_osd) 2902922dab61SIlya Dryomov cancel_linger_request(req); 2903922dab61SIlya Dryomov 2904922dab61SIlya Dryomov request_reinit(req); 2905922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 2906922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 2907922dab61SIlya Dryomov req->r_flags = lreq->t.flags; 2908922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 2909922dab61SIlya Dryomov 2910922dab61SIlya Dryomov mutex_lock(&lreq->lock); 291119079203SIlya Dryomov if (lreq->is_watch && lreq->committed) { 2912922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2913922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id); 2914922dab61SIlya Dryomov op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; 2915922dab61SIlya Dryomov op->watch.gen = ++lreq->register_gen; 2916922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 2917922dab61SIlya Dryomov op->watch.gen); 2918922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 2919922dab61SIlya Dryomov } else { 292019079203SIlya Dryomov if (!lreq->is_watch) 292119079203SIlya Dryomov lreq->notify_id = 0; 292219079203SIlya Dryomov else 2923922dab61SIlya Dryomov WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); 2924922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 2925922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 2926922dab61SIlya Dryomov } 2927922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2928922dab61SIlya Dryomov 2929922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2930922dab61SIlya Dryomov req->r_linger = true; 2931922dab61SIlya Dryomov 2932922dab61SIlya Dryomov submit_request(req, true); 2933922dab61SIlya Dryomov } 2934922dab61SIlya Dryomov 2935922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 2936922dab61SIlya Dryomov { 2937922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2938922dab61SIlya Dryomov 2939922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2940922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 2941922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 2942922dab61SIlya Dryomov lreq->last_error); 2943922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 2944b07d3c4bSIlya Dryomov if (!req->r_result) { 2945b07d3c4bSIlya Dryomov lreq->watch_valid_thru = lreq->ping_sent; 2946b07d3c4bSIlya Dryomov } else if (!lreq->last_error) { 2947922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2948922dab61SIlya Dryomov queue_watch_error(lreq); 2949922dab61SIlya Dryomov } 2950922dab61SIlya Dryomov } else { 2951922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 2952922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 2953922dab61SIlya Dryomov } 2954922dab61SIlya Dryomov 2955922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2956922dab61SIlya Dryomov linger_put(lreq); 2957922dab61SIlya Dryomov } 2958922dab61SIlya Dryomov 2959922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 2960922dab61SIlya Dryomov { 2961922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2962922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->ping_req; 2963922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2964922dab61SIlya Dryomov 2965b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 2966922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 2967922dab61SIlya Dryomov return; 2968922dab61SIlya Dryomov } 2969922dab61SIlya Dryomov 2970922dab61SIlya Dryomov lreq->ping_sent = jiffies; 2971922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 2972922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 2973922dab61SIlya Dryomov lreq->register_gen); 2974922dab61SIlya Dryomov 2975922dab61SIlya Dryomov if (req->r_osd) 2976922dab61SIlya Dryomov cancel_linger_request(req); 2977922dab61SIlya Dryomov 2978922dab61SIlya Dryomov request_reinit(req); 2979922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 2980922dab61SIlya Dryomov 2981922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2982922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id || 2983922dab61SIlya Dryomov op->watch.op != CEPH_OSD_WATCH_OP_PING); 2984922dab61SIlya Dryomov op->watch.gen = lreq->register_gen; 2985922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 2986922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2987922dab61SIlya Dryomov req->r_linger = true; 2988922dab61SIlya Dryomov 2989922dab61SIlya Dryomov ceph_osdc_get_request(req); 2990922dab61SIlya Dryomov account_request(req); 2991922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 2992922dab61SIlya Dryomov link_request(lreq->osd, req); 2993922dab61SIlya Dryomov send_request(req); 2994922dab61SIlya Dryomov } 2995922dab61SIlya Dryomov 2996922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 2997922dab61SIlya Dryomov { 2998922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2999922dab61SIlya Dryomov struct ceph_osd *osd; 3000922dab61SIlya Dryomov 300181c65213SIlya Dryomov down_write(&osdc->lock); 300281c65213SIlya Dryomov linger_register(lreq); 300381c65213SIlya Dryomov if (lreq->is_watch) { 300481c65213SIlya Dryomov lreq->reg_req->r_ops[0].watch.cookie = lreq->linger_id; 300581c65213SIlya Dryomov lreq->ping_req->r_ops[0].watch.cookie = lreq->linger_id; 300681c65213SIlya Dryomov } else { 300781c65213SIlya Dryomov lreq->reg_req->r_ops[0].notify.cookie = lreq->linger_id; 300881c65213SIlya Dryomov } 300981c65213SIlya Dryomov 30107de030d6SIlya Dryomov calc_target(osdc, &lreq->t, NULL, false); 3011922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3012922dab61SIlya Dryomov link_linger(osd, lreq); 3013922dab61SIlya Dryomov 3014922dab61SIlya Dryomov send_linger(lreq); 301581c65213SIlya Dryomov up_write(&osdc->lock); 3016922dab61SIlya Dryomov } 3017922dab61SIlya Dryomov 30184609245eSIlya Dryomov static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) 30194609245eSIlya Dryomov { 30204609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 30214609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 30224609245eSIlya Dryomov 30234609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 30244609245eSIlya Dryomov 30254609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 30264609245eSIlya Dryomov lreq->linger_id); 30274609245eSIlya Dryomov if (!lookup_lreq) 30284609245eSIlya Dryomov return; 30294609245eSIlya Dryomov 30304609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 30314609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 30324609245eSIlya Dryomov linger_put(lreq); 30334609245eSIlya Dryomov } 30344609245eSIlya Dryomov 3035922dab61SIlya Dryomov /* 3036922dab61SIlya Dryomov * @lreq has to be both registered and linked. 3037922dab61SIlya Dryomov */ 3038922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 3039922dab61SIlya Dryomov { 304019079203SIlya Dryomov if (lreq->is_watch && lreq->ping_req->r_osd) 3041922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 3042922dab61SIlya Dryomov if (lreq->reg_req->r_osd) 3043922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 30444609245eSIlya Dryomov cancel_linger_map_check(lreq); 3045922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3046922dab61SIlya Dryomov linger_unregister(lreq); 3047922dab61SIlya Dryomov } 3048922dab61SIlya Dryomov 3049922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 3050922dab61SIlya Dryomov { 3051922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3052922dab61SIlya Dryomov 3053922dab61SIlya Dryomov down_write(&osdc->lock); 3054922dab61SIlya Dryomov if (__linger_registered(lreq)) 3055922dab61SIlya Dryomov __linger_cancel(lreq); 3056922dab61SIlya Dryomov up_write(&osdc->lock); 3057922dab61SIlya Dryomov } 3058922dab61SIlya Dryomov 30594609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq); 30604609245eSIlya Dryomov 30614609245eSIlya Dryomov static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) 30624609245eSIlya Dryomov { 30634609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 30644609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 30654609245eSIlya Dryomov 30664609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 30674609245eSIlya Dryomov WARN_ON(!map->epoch); 30684609245eSIlya Dryomov 30694609245eSIlya Dryomov if (lreq->register_gen) { 30704609245eSIlya Dryomov lreq->map_dne_bound = map->epoch; 30714609245eSIlya Dryomov dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, 30724609245eSIlya Dryomov lreq, lreq->linger_id); 30734609245eSIlya Dryomov } else { 30744609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", 30754609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 30764609245eSIlya Dryomov map->epoch); 30774609245eSIlya Dryomov } 30784609245eSIlya Dryomov 30794609245eSIlya Dryomov if (lreq->map_dne_bound) { 30804609245eSIlya Dryomov if (map->epoch >= lreq->map_dne_bound) { 30814609245eSIlya Dryomov /* we had a new enough map */ 30824609245eSIlya Dryomov pr_info("linger_id %llu pool does not exist\n", 30834609245eSIlya Dryomov lreq->linger_id); 30844609245eSIlya Dryomov linger_reg_commit_complete(lreq, -ENOENT); 30854609245eSIlya Dryomov __linger_cancel(lreq); 30864609245eSIlya Dryomov } 30874609245eSIlya Dryomov } else { 30884609245eSIlya Dryomov send_linger_map_check(lreq); 30894609245eSIlya Dryomov } 30904609245eSIlya Dryomov } 30914609245eSIlya Dryomov 30924609245eSIlya Dryomov static void linger_map_check_cb(struct ceph_mon_generic_request *greq) 30934609245eSIlya Dryomov { 30944609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 30954609245eSIlya Dryomov struct ceph_osd_linger_request *lreq; 30964609245eSIlya Dryomov u64 linger_id = greq->private_data; 30974609245eSIlya Dryomov 30984609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 30994609245eSIlya Dryomov 31004609245eSIlya Dryomov down_write(&osdc->lock); 31014609245eSIlya Dryomov lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); 31024609245eSIlya Dryomov if (!lreq) { 31034609245eSIlya Dryomov dout("%s linger_id %llu dne\n", __func__, linger_id); 31044609245eSIlya Dryomov goto out_unlock; 31054609245eSIlya Dryomov } 31064609245eSIlya Dryomov 31074609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", 31084609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 31094609245eSIlya Dryomov greq->u.newest); 31104609245eSIlya Dryomov if (!lreq->map_dne_bound) 31114609245eSIlya Dryomov lreq->map_dne_bound = greq->u.newest; 31124609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 31134609245eSIlya Dryomov check_linger_pool_dne(lreq); 31144609245eSIlya Dryomov 31154609245eSIlya Dryomov linger_put(lreq); 31164609245eSIlya Dryomov out_unlock: 31174609245eSIlya Dryomov up_write(&osdc->lock); 31184609245eSIlya Dryomov } 31194609245eSIlya Dryomov 31204609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq) 31214609245eSIlya Dryomov { 31224609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 31234609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 31244609245eSIlya Dryomov int ret; 31254609245eSIlya Dryomov 31264609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 31274609245eSIlya Dryomov 31284609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 31294609245eSIlya Dryomov lreq->linger_id); 31304609245eSIlya Dryomov if (lookup_lreq) { 31314609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 31324609245eSIlya Dryomov return; 31334609245eSIlya Dryomov } 31344609245eSIlya Dryomov 31354609245eSIlya Dryomov linger_get(lreq); 31364609245eSIlya Dryomov insert_linger_mc(&osdc->linger_map_checks, lreq); 31374609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 31384609245eSIlya Dryomov linger_map_check_cb, lreq->linger_id); 31394609245eSIlya Dryomov WARN_ON(ret); 31404609245eSIlya Dryomov } 31414609245eSIlya Dryomov 3142922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 3143922dab61SIlya Dryomov { 3144922dab61SIlya Dryomov int ret; 3145922dab61SIlya Dryomov 3146922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 3147922dab61SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); 3148922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 3149922dab61SIlya Dryomov } 3150922dab61SIlya Dryomov 315119079203SIlya Dryomov static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) 315219079203SIlya Dryomov { 315319079203SIlya Dryomov int ret; 315419079203SIlya Dryomov 315519079203SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 315619079203SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); 315719079203SIlya Dryomov return ret ?: lreq->notify_finish_error; 315819079203SIlya Dryomov } 315919079203SIlya Dryomov 3160922dab61SIlya Dryomov /* 3161fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 3162fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 3163fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 3164fbca9635SIlya Dryomov * reset is detected. 31653d14c5d2SYehuda Sadeh */ 31663d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 31673d14c5d2SYehuda Sadeh { 31683d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 31693d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 3170a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 31715aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 31727cc5e38fSIlya Dryomov unsigned long expiry_cutoff = jiffies - opts->osd_request_timeout; 31735aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 31745aea3dcdSIlya Dryomov struct rb_node *n, *p; 31753d14c5d2SYehuda Sadeh 31765aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 31775aea3dcdSIlya Dryomov down_write(&osdc->lock); 31783d14c5d2SYehuda Sadeh 31793d14c5d2SYehuda Sadeh /* 31803d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 31813d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 31823d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 31833d14c5d2SYehuda Sadeh */ 31845aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 31855aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 31865aea3dcdSIlya Dryomov bool found = false; 31873d14c5d2SYehuda Sadeh 31887cc5e38fSIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 31895aea3dcdSIlya Dryomov struct ceph_osd_request *req = 31905aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 31915aea3dcdSIlya Dryomov 31927cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 31937cc5e38fSIlya Dryomov 31945aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 31955aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 31965aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 31975aea3dcdSIlya Dryomov found = true; 31985aea3dcdSIlya Dryomov } 31997cc5e38fSIlya Dryomov if (opts->osd_request_timeout && 32007cc5e38fSIlya Dryomov time_before(req->r_start_stamp, expiry_cutoff)) { 32017cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 32027cc5e38fSIlya Dryomov req->r_tid, osd->o_osd); 32037cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 32047cc5e38fSIlya Dryomov } 32055aea3dcdSIlya Dryomov } 3206922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 3207922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3208922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 3209922dab61SIlya Dryomov 3210922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 3211922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 3212922dab61SIlya Dryomov found = true; 3213922dab61SIlya Dryomov 3214922dab61SIlya Dryomov mutex_lock(&lreq->lock); 321519079203SIlya Dryomov if (lreq->is_watch && lreq->committed && !lreq->last_error) 3216922dab61SIlya Dryomov send_linger_ping(lreq); 3217922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3218922dab61SIlya Dryomov } 32195aea3dcdSIlya Dryomov 32205aea3dcdSIlya Dryomov if (found) 32213d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 32223d14c5d2SYehuda Sadeh } 32235aea3dcdSIlya Dryomov 32247cc5e38fSIlya Dryomov if (opts->osd_request_timeout) { 32257cc5e38fSIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 32267cc5e38fSIlya Dryomov struct ceph_osd_request *req = 32277cc5e38fSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 32287cc5e38fSIlya Dryomov 32297cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 32307cc5e38fSIlya Dryomov 32317cc5e38fSIlya Dryomov if (time_before(req->r_start_stamp, expiry_cutoff)) { 32327cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 32337cc5e38fSIlya Dryomov req->r_tid, osdc->homeless_osd.o_osd); 32347cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 32357cc5e38fSIlya Dryomov } 32367cc5e38fSIlya Dryomov } 32377cc5e38fSIlya Dryomov } 32387cc5e38fSIlya Dryomov 32395aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 32405aea3dcdSIlya Dryomov maybe_request_map(osdc); 32415aea3dcdSIlya Dryomov 32423d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 32435aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 32445aea3dcdSIlya Dryomov struct ceph_osd, 32453d14c5d2SYehuda Sadeh o_keepalive_item); 32463d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 32473d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 32483d14c5d2SYehuda Sadeh } 32493d14c5d2SYehuda Sadeh 32505aea3dcdSIlya Dryomov up_write(&osdc->lock); 3251fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 3252fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 32533d14c5d2SYehuda Sadeh } 32543d14c5d2SYehuda Sadeh 32553d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 32563d14c5d2SYehuda Sadeh { 32573d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 32583d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 32593d14c5d2SYehuda Sadeh osds_timeout_work.work); 3260a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 326142a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 32623d14c5d2SYehuda Sadeh 326342a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 32645aea3dcdSIlya Dryomov down_write(&osdc->lock); 326542a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 326642a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 326742a2c09fSIlya Dryomov break; 326842a2c09fSIlya Dryomov 32695aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 3270922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 32715aea3dcdSIlya Dryomov close_osd(osd); 327242a2c09fSIlya Dryomov } 327342a2c09fSIlya Dryomov 32745aea3dcdSIlya Dryomov up_write(&osdc->lock); 32753d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 32763d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 32773d14c5d2SYehuda Sadeh } 32783d14c5d2SYehuda Sadeh 3279205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 3280205ee118SIlya Dryomov struct ceph_object_locator *oloc) 3281205ee118SIlya Dryomov { 3282205ee118SIlya Dryomov u8 struct_v, struct_cv; 3283205ee118SIlya Dryomov u32 len; 3284205ee118SIlya Dryomov void *struct_end; 3285205ee118SIlya Dryomov int ret = 0; 3286205ee118SIlya Dryomov 3287205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3288205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3289205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3290205ee118SIlya Dryomov if (struct_v < 3) { 3291205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 3292205ee118SIlya Dryomov struct_v, struct_cv); 3293205ee118SIlya Dryomov goto e_inval; 3294205ee118SIlya Dryomov } 3295205ee118SIlya Dryomov if (struct_cv > 6) { 3296205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 3297205ee118SIlya Dryomov struct_v, struct_cv); 3298205ee118SIlya Dryomov goto e_inval; 3299205ee118SIlya Dryomov } 3300205ee118SIlya Dryomov len = ceph_decode_32(p); 3301205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3302205ee118SIlya Dryomov struct_end = *p + len; 3303205ee118SIlya Dryomov 3304205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 3305205ee118SIlya Dryomov *p += 4; /* skip preferred */ 3306205ee118SIlya Dryomov 3307205ee118SIlya Dryomov len = ceph_decode_32(p); 3308205ee118SIlya Dryomov if (len > 0) { 3309205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 3310205ee118SIlya Dryomov goto e_inval; 3311205ee118SIlya Dryomov } 3312205ee118SIlya Dryomov 3313205ee118SIlya Dryomov if (struct_v >= 5) { 3314cd08e0a2SYan, Zheng bool changed = false; 3315cd08e0a2SYan, Zheng 3316205ee118SIlya Dryomov len = ceph_decode_32(p); 3317205ee118SIlya Dryomov if (len > 0) { 331830c156d9SYan, Zheng ceph_decode_need(p, end, len, e_inval); 3319cd08e0a2SYan, Zheng if (!oloc->pool_ns || 3320cd08e0a2SYan, Zheng ceph_compare_string(oloc->pool_ns, *p, len)) 3321cd08e0a2SYan, Zheng changed = true; 332230c156d9SYan, Zheng *p += len; 3323cd08e0a2SYan, Zheng } else { 3324cd08e0a2SYan, Zheng if (oloc->pool_ns) 3325cd08e0a2SYan, Zheng changed = true; 3326cd08e0a2SYan, Zheng } 3327cd08e0a2SYan, Zheng if (changed) { 3328cd08e0a2SYan, Zheng /* redirect changes namespace */ 3329cd08e0a2SYan, Zheng pr_warn("ceph_object_locator::nspace is changed\n"); 3330cd08e0a2SYan, Zheng goto e_inval; 3331205ee118SIlya Dryomov } 3332205ee118SIlya Dryomov } 3333205ee118SIlya Dryomov 3334205ee118SIlya Dryomov if (struct_v >= 6) { 3335205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 3336205ee118SIlya Dryomov if (hash != -1) { 3337205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 3338205ee118SIlya Dryomov goto e_inval; 3339205ee118SIlya Dryomov } 3340205ee118SIlya Dryomov } 3341205ee118SIlya Dryomov 3342205ee118SIlya Dryomov /* skip the rest */ 3343205ee118SIlya Dryomov *p = struct_end; 3344205ee118SIlya Dryomov out: 3345205ee118SIlya Dryomov return ret; 3346205ee118SIlya Dryomov 3347205ee118SIlya Dryomov e_inval: 3348205ee118SIlya Dryomov ret = -EINVAL; 3349205ee118SIlya Dryomov goto out; 3350205ee118SIlya Dryomov } 3351205ee118SIlya Dryomov 3352205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 3353205ee118SIlya Dryomov struct ceph_request_redirect *redir) 3354205ee118SIlya Dryomov { 3355205ee118SIlya Dryomov u8 struct_v, struct_cv; 3356205ee118SIlya Dryomov u32 len; 3357205ee118SIlya Dryomov void *struct_end; 3358205ee118SIlya Dryomov int ret; 3359205ee118SIlya Dryomov 3360205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3361205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3362205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3363205ee118SIlya Dryomov if (struct_cv > 1) { 3364205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 3365205ee118SIlya Dryomov struct_v, struct_cv); 3366205ee118SIlya Dryomov goto e_inval; 3367205ee118SIlya Dryomov } 3368205ee118SIlya Dryomov len = ceph_decode_32(p); 3369205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3370205ee118SIlya Dryomov struct_end = *p + len; 3371205ee118SIlya Dryomov 3372205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 3373205ee118SIlya Dryomov if (ret) 3374205ee118SIlya Dryomov goto out; 3375205ee118SIlya Dryomov 3376205ee118SIlya Dryomov len = ceph_decode_32(p); 3377205ee118SIlya Dryomov if (len > 0) { 3378205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 3379205ee118SIlya Dryomov goto e_inval; 3380205ee118SIlya Dryomov } 3381205ee118SIlya Dryomov 3382205ee118SIlya Dryomov len = ceph_decode_32(p); 3383205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 3384205ee118SIlya Dryomov 3385205ee118SIlya Dryomov /* skip the rest */ 3386205ee118SIlya Dryomov *p = struct_end; 3387205ee118SIlya Dryomov out: 3388205ee118SIlya Dryomov return ret; 3389205ee118SIlya Dryomov 3390205ee118SIlya Dryomov e_inval: 3391205ee118SIlya Dryomov ret = -EINVAL; 3392205ee118SIlya Dryomov goto out; 3393205ee118SIlya Dryomov } 3394205ee118SIlya Dryomov 3395fe5da05eSIlya Dryomov struct MOSDOpReply { 3396fe5da05eSIlya Dryomov struct ceph_pg pgid; 3397fe5da05eSIlya Dryomov u64 flags; 3398fe5da05eSIlya Dryomov int result; 3399fe5da05eSIlya Dryomov u32 epoch; 3400fe5da05eSIlya Dryomov int num_ops; 3401fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 3402fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 3403fe5da05eSIlya Dryomov int retry_attempt; 3404fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 3405fe5da05eSIlya Dryomov u64 user_version; 3406fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 3407fe5da05eSIlya Dryomov }; 340825845472SSage Weil 3409fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 34103d14c5d2SYehuda Sadeh { 3411fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 3412fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 3413fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 3414fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 3415b0b31a8fSIlya Dryomov u8 decode_redir; 3416fe5da05eSIlya Dryomov u32 len; 3417fe5da05eSIlya Dryomov int ret; 3418fe5da05eSIlya Dryomov int i; 34193d14c5d2SYehuda Sadeh 3420fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 3421fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 3422fe5da05eSIlya Dryomov p += len; /* skip oid */ 34231b83bef2SSage Weil 3424fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 3425fe5da05eSIlya Dryomov if (ret) 3426fe5da05eSIlya Dryomov return ret; 34271b83bef2SSage Weil 3428fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 3429fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 3430fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 3431fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 3432fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 3433fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 34341b83bef2SSage Weil 3435fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 3436fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 3437fe5da05eSIlya Dryomov goto e_inval; 34381b83bef2SSage Weil 3439fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 3440fe5da05eSIlya Dryomov e_inval); 3441fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 34421b83bef2SSage Weil struct ceph_osd_op *op = p; 34431b83bef2SSage Weil 3444fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 34451b83bef2SSage Weil p += sizeof(*op); 34461b83bef2SSage Weil } 3447fe5da05eSIlya Dryomov 3448fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 3449fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 3450fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 3451fe5da05eSIlya Dryomov 3452fe5da05eSIlya Dryomov if (version >= 5) { 3453fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 3454fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 3455fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 3456fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 3457fe5da05eSIlya Dryomov } else { 3458fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 3459fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 34601b83bef2SSage Weil } 34611b83bef2SSage Weil 3462fe5da05eSIlya Dryomov if (version >= 6) { 3463fe5da05eSIlya Dryomov if (version >= 7) 3464fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 3465b0b31a8fSIlya Dryomov else 3466b0b31a8fSIlya Dryomov decode_redir = 1; 3467b0b31a8fSIlya Dryomov } else { 3468b0b31a8fSIlya Dryomov decode_redir = 0; 3469b0b31a8fSIlya Dryomov } 3470b0b31a8fSIlya Dryomov 3471b0b31a8fSIlya Dryomov if (decode_redir) { 3472fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 3473fe5da05eSIlya Dryomov if (ret) 3474fe5da05eSIlya Dryomov return ret; 3475205ee118SIlya Dryomov } else { 3476fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 3477205ee118SIlya Dryomov } 3478205ee118SIlya Dryomov 3479fe5da05eSIlya Dryomov return 0; 3480205ee118SIlya Dryomov 3481fe5da05eSIlya Dryomov e_inval: 3482fe5da05eSIlya Dryomov return -EINVAL; 3483fe5da05eSIlya Dryomov } 3484fe5da05eSIlya Dryomov 3485fe5da05eSIlya Dryomov /* 3486b18b9550SIlya Dryomov * Handle MOSDOpReply. Set ->r_result and call the callback if it is 3487b18b9550SIlya Dryomov * specified. 3488fe5da05eSIlya Dryomov */ 34895aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 3490fe5da05eSIlya Dryomov { 34915aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 3492fe5da05eSIlya Dryomov struct ceph_osd_request *req; 3493fe5da05eSIlya Dryomov struct MOSDOpReply m; 3494fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 3495fe5da05eSIlya Dryomov u32 data_len = 0; 3496fe5da05eSIlya Dryomov int ret; 3497fe5da05eSIlya Dryomov int i; 3498fe5da05eSIlya Dryomov 3499fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 3500fe5da05eSIlya Dryomov 35015aea3dcdSIlya Dryomov down_read(&osdc->lock); 35025aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 35035aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 35045aea3dcdSIlya Dryomov goto out_unlock_osdc; 3505fe5da05eSIlya Dryomov } 35065aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 35075aea3dcdSIlya Dryomov 35085aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 35095aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 35105aea3dcdSIlya Dryomov if (!req) { 35115aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 35125aea3dcdSIlya Dryomov goto out_unlock_session; 35135aea3dcdSIlya Dryomov } 3514fe5da05eSIlya Dryomov 3515cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns; 3516fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 3517cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = NULL; 3518fe5da05eSIlya Dryomov if (ret) { 3519fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 3520fe5da05eSIlya Dryomov req->r_tid, ret); 3521fe5da05eSIlya Dryomov ceph_msg_dump(msg); 3522fe5da05eSIlya Dryomov goto fail_request; 3523fe5da05eSIlya Dryomov } 3524fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 3525fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 3526fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 3527fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 3528fe5da05eSIlya Dryomov 3529fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 3530fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 3531fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 3532fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 3533fe5da05eSIlya Dryomov req->r_attempts - 1); 35345aea3dcdSIlya Dryomov goto out_unlock_session; 3535fe5da05eSIlya Dryomov } 3536fe5da05eSIlya Dryomov } else { 3537fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 3538fe5da05eSIlya Dryomov } 3539fe5da05eSIlya Dryomov 3540fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 3541fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 3542fe5da05eSIlya Dryomov m.redirect.oloc.pool); 35435aea3dcdSIlya Dryomov unlink_request(osd, req); 35445aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 3545205ee118SIlya Dryomov 354630c156d9SYan, Zheng /* 354730c156d9SYan, Zheng * Not ceph_oloc_copy() - changing pool_ns is not 354830c156d9SYan, Zheng * supported. 354930c156d9SYan, Zheng */ 355030c156d9SYan, Zheng req->r_t.target_oloc.pool = m.redirect.oloc.pool; 35515aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; 35525aea3dcdSIlya Dryomov req->r_tid = 0; 35535aea3dcdSIlya Dryomov __submit_request(req, false); 35545aea3dcdSIlya Dryomov goto out_unlock_osdc; 3555205ee118SIlya Dryomov } 3556205ee118SIlya Dryomov 3557fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 3558fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 3559fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 3560fe5da05eSIlya Dryomov goto fail_request; 3561fe5da05eSIlya Dryomov } 3562fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 3563fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 3564fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 3565fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 3566fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 3567fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 3568fe5da05eSIlya Dryomov } 3569fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 3570fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 3571fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 3572fe5da05eSIlya Dryomov goto fail_request; 3573fe5da05eSIlya Dryomov } 3574b18b9550SIlya Dryomov dout("%s req %p tid %llu result %d data_len %u\n", __func__, 3575b18b9550SIlya Dryomov req, req->r_tid, m.result, data_len); 35763d14c5d2SYehuda Sadeh 3577b18b9550SIlya Dryomov /* 3578b18b9550SIlya Dryomov * Since we only ever request ONDISK, we should only ever get 3579b18b9550SIlya Dryomov * one (type of) reply back. 3580b18b9550SIlya Dryomov */ 3581b18b9550SIlya Dryomov WARN_ON(!(m.flags & CEPH_OSD_FLAG_ONDISK)); 3582fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 358345ee2c1dSIlya Dryomov finish_request(req); 35845aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 35855aea3dcdSIlya Dryomov up_read(&osdc->lock); 35863d14c5d2SYehuda Sadeh 3587fe5da05eSIlya Dryomov __complete_request(req); 35883d14c5d2SYehuda Sadeh return; 3589fe5da05eSIlya Dryomov 3590fe5da05eSIlya Dryomov fail_request: 35914609245eSIlya Dryomov complete_request(req, -EIO); 35925aea3dcdSIlya Dryomov out_unlock_session: 35935aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 35945aea3dcdSIlya Dryomov out_unlock_osdc: 35955aea3dcdSIlya Dryomov up_read(&osdc->lock); 35963d14c5d2SYehuda Sadeh } 35973d14c5d2SYehuda Sadeh 359842c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 359942c1b124SIlya Dryomov { 360042c1b124SIlya Dryomov struct rb_node *n; 360142c1b124SIlya Dryomov 360242c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 360342c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 360442c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 360542c1b124SIlya Dryomov 360642c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 360742c1b124SIlya Dryomov } 360842c1b124SIlya Dryomov } 360942c1b124SIlya Dryomov 36105aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 36113d14c5d2SYehuda Sadeh { 36125aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 36133d14c5d2SYehuda Sadeh 36145aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 36155aea3dcdSIlya Dryomov if (!pi) 36165aea3dcdSIlya Dryomov return false; 36173d14c5d2SYehuda Sadeh 36185aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 36193d14c5d2SYehuda Sadeh } 36203d14c5d2SYehuda Sadeh 3621922dab61SIlya Dryomov static enum calc_target_result 3622922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 3623922dab61SIlya Dryomov { 3624922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3625922dab61SIlya Dryomov enum calc_target_result ct_res; 3626922dab61SIlya Dryomov 36277de030d6SIlya Dryomov ct_res = calc_target(osdc, &lreq->t, NULL, true); 3628922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 3629922dab61SIlya Dryomov struct ceph_osd *osd; 3630922dab61SIlya Dryomov 3631922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3632922dab61SIlya Dryomov if (osd != lreq->osd) { 3633922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3634922dab61SIlya Dryomov link_linger(osd, lreq); 3635922dab61SIlya Dryomov } 3636922dab61SIlya Dryomov } 3637922dab61SIlya Dryomov 3638922dab61SIlya Dryomov return ct_res; 3639922dab61SIlya Dryomov } 3640922dab61SIlya Dryomov 36413d14c5d2SYehuda Sadeh /* 36425aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 36433d14c5d2SYehuda Sadeh */ 36445aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 36455aea3dcdSIlya Dryomov bool force_resend, 36465aea3dcdSIlya Dryomov bool cleared_full, 36475aea3dcdSIlya Dryomov bool check_pool_cleared_full, 36485aea3dcdSIlya Dryomov struct rb_root *need_resend, 36495aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 36503d14c5d2SYehuda Sadeh { 36515aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 36525aea3dcdSIlya Dryomov struct rb_node *n; 36535aea3dcdSIlya Dryomov bool force_resend_writes; 36543d14c5d2SYehuda Sadeh 3655922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 3656922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3657922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3658922dab61SIlya Dryomov enum calc_target_result ct_res; 3659922dab61SIlya Dryomov 3660922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 3661922dab61SIlya Dryomov 3662922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 3663922dab61SIlya Dryomov lreq->linger_id); 3664922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 3665922dab61SIlya Dryomov switch (ct_res) { 3666922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 3667922dab61SIlya Dryomov force_resend_writes = cleared_full || 3668922dab61SIlya Dryomov (check_pool_cleared_full && 3669922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 3670922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 3671922dab61SIlya Dryomov break; 3672922dab61SIlya Dryomov 3673922dab61SIlya Dryomov /* fall through */ 3674922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 36754609245eSIlya Dryomov cancel_linger_map_check(lreq); 3676922dab61SIlya Dryomov /* 3677922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 3678922dab61SIlya Dryomov * may have already added it to the list, since 3679922dab61SIlya Dryomov * it's not unlinked here. 3680922dab61SIlya Dryomov */ 3681922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 3682922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 3683922dab61SIlya Dryomov break; 3684922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 3685a10bcb19SIlya Dryomov list_del_init(&lreq->scan_item); 36864609245eSIlya Dryomov check_linger_pool_dne(lreq); 3687922dab61SIlya Dryomov break; 3688922dab61SIlya Dryomov } 3689922dab61SIlya Dryomov } 3690922dab61SIlya Dryomov 36915aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 36925aea3dcdSIlya Dryomov struct ceph_osd_request *req = 36935aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 36945aea3dcdSIlya Dryomov enum calc_target_result ct_res; 3695ab60b16dSAlex Elder 36964609245eSIlya Dryomov n = rb_next(n); /* unlink_request(), check_pool_dne() */ 3697ab60b16dSAlex Elder 36985aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 36997de030d6SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, &req->r_osd->o_con, 37007de030d6SIlya Dryomov false); 37015aea3dcdSIlya Dryomov switch (ct_res) { 37025aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 37035aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 37045aea3dcdSIlya Dryomov (check_pool_cleared_full && 37055aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 37065aea3dcdSIlya Dryomov if (!force_resend && 37075aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 37085aea3dcdSIlya Dryomov !force_resend_writes)) 37095aea3dcdSIlya Dryomov break; 3710a40c4f10SYehuda Sadeh 37115aea3dcdSIlya Dryomov /* fall through */ 37125aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 37134609245eSIlya Dryomov cancel_map_check(req); 37145aea3dcdSIlya Dryomov unlink_request(osd, req); 37155aea3dcdSIlya Dryomov insert_request(need_resend, req); 37165aea3dcdSIlya Dryomov break; 37175aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 37184609245eSIlya Dryomov check_pool_dne(req); 37195aea3dcdSIlya Dryomov break; 3720a40c4f10SYehuda Sadeh } 37213d14c5d2SYehuda Sadeh } 37223d14c5d2SYehuda Sadeh } 37236f6c7006SSage Weil 372442c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 37255aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 37265aea3dcdSIlya Dryomov struct rb_root *need_resend, 37275aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 372842c1b124SIlya Dryomov { 372942c1b124SIlya Dryomov struct ceph_osdmap *newmap; 373042c1b124SIlya Dryomov struct rb_node *n; 373142c1b124SIlya Dryomov bool skipped_map = false; 373242c1b124SIlya Dryomov bool was_full; 373342c1b124SIlya Dryomov 3734b7ec35b3SIlya Dryomov was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 373542c1b124SIlya Dryomov set_pool_was_full(osdc); 373642c1b124SIlya Dryomov 373742c1b124SIlya Dryomov if (incremental) 373842c1b124SIlya Dryomov newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); 373942c1b124SIlya Dryomov else 374042c1b124SIlya Dryomov newmap = ceph_osdmap_decode(&p, end); 374142c1b124SIlya Dryomov if (IS_ERR(newmap)) 374242c1b124SIlya Dryomov return PTR_ERR(newmap); 374342c1b124SIlya Dryomov 374442c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 374542c1b124SIlya Dryomov /* 374642c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 374742c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 374842c1b124SIlya Dryomov * should be false. 374942c1b124SIlya Dryomov */ 375042c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 375142c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 375242c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 375342c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 375442c1b124SIlya Dryomov 375542c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 375642c1b124SIlya Dryomov if (old_pi) 375742c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 375842c1b124SIlya Dryomov else 375942c1b124SIlya Dryomov WARN_ON(pi->was_full); 376042c1b124SIlya Dryomov } 376142c1b124SIlya Dryomov 376242c1b124SIlya Dryomov if (osdc->osdmap->epoch && 376342c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 376442c1b124SIlya Dryomov WARN_ON(incremental); 376542c1b124SIlya Dryomov skipped_map = true; 376642c1b124SIlya Dryomov } 376742c1b124SIlya Dryomov 376842c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 376942c1b124SIlya Dryomov osdc->osdmap = newmap; 377042c1b124SIlya Dryomov } 377142c1b124SIlya Dryomov 3772b7ec35b3SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 37735aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 37745aea3dcdSIlya Dryomov need_resend, need_resend_linger); 37755aea3dcdSIlya Dryomov 37765aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 37775aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 37785aea3dcdSIlya Dryomov 37795aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 37805aea3dcdSIlya Dryomov 37815aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 37825aea3dcdSIlya Dryomov need_resend_linger); 37835aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 37845aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 37855aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 37865aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 37875aea3dcdSIlya Dryomov close_osd(osd); 37885aea3dcdSIlya Dryomov } 378942c1b124SIlya Dryomov 379042c1b124SIlya Dryomov return 0; 379142c1b124SIlya Dryomov } 37926f6c7006SSage Weil 37935aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 37945aea3dcdSIlya Dryomov struct rb_root *need_resend, 37955aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 37965aea3dcdSIlya Dryomov { 3797922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 379804c7d789SIlya Dryomov enum calc_target_result ct_res; 37995aea3dcdSIlya Dryomov struct rb_node *n; 38005aea3dcdSIlya Dryomov 380104c7d789SIlya Dryomov /* make sure need_resend targets reflect latest map */ 380204c7d789SIlya Dryomov for (n = rb_first(need_resend); n; ) { 380304c7d789SIlya Dryomov struct ceph_osd_request *req = 380404c7d789SIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 380504c7d789SIlya Dryomov 380604c7d789SIlya Dryomov n = rb_next(n); 380704c7d789SIlya Dryomov 380804c7d789SIlya Dryomov if (req->r_t.epoch < osdc->osdmap->epoch) { 380904c7d789SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, NULL, false); 381004c7d789SIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) { 381104c7d789SIlya Dryomov erase_request(need_resend, req); 381204c7d789SIlya Dryomov check_pool_dne(req); 381304c7d789SIlya Dryomov } 381404c7d789SIlya Dryomov } 381504c7d789SIlya Dryomov } 381604c7d789SIlya Dryomov 38175aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 38185aea3dcdSIlya Dryomov struct ceph_osd_request *req = 38195aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 38205aea3dcdSIlya Dryomov struct ceph_osd *osd; 38215aea3dcdSIlya Dryomov 38225aea3dcdSIlya Dryomov n = rb_next(n); 38235aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 38245aea3dcdSIlya Dryomov 38255aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 38265aea3dcdSIlya Dryomov link_request(osd, req); 38275aea3dcdSIlya Dryomov if (!req->r_linger) { 38285aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 38295aea3dcdSIlya Dryomov send_request(req); 3830922dab61SIlya Dryomov } else { 3831922dab61SIlya Dryomov cancel_linger_request(req); 38325aea3dcdSIlya Dryomov } 38335aea3dcdSIlya Dryomov } 3834922dab61SIlya Dryomov 3835922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 3836922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 3837922dab61SIlya Dryomov send_linger(lreq); 3838922dab61SIlya Dryomov 3839922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 3840922dab61SIlya Dryomov } 38415aea3dcdSIlya Dryomov } 38425aea3dcdSIlya Dryomov 38433d14c5d2SYehuda Sadeh /* 38443d14c5d2SYehuda Sadeh * Process updated osd map. 38453d14c5d2SYehuda Sadeh * 38463d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 38473d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 38483d14c5d2SYehuda Sadeh * off to different OSDs as needed. 38493d14c5d2SYehuda Sadeh */ 38503d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 38513d14c5d2SYehuda Sadeh { 385242c1b124SIlya Dryomov void *p = msg->front.iov_base; 385342c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 38543d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 38553d14c5d2SYehuda Sadeh u32 epoch; 38563d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 38575aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 38585aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 385942c1b124SIlya Dryomov bool handled_incremental = false; 386042c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 386142c1b124SIlya Dryomov bool pauserd, pausewr; 386242c1b124SIlya Dryomov int err; 38633d14c5d2SYehuda Sadeh 386442c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 38655aea3dcdSIlya Dryomov down_write(&osdc->lock); 38663d14c5d2SYehuda Sadeh 38673d14c5d2SYehuda Sadeh /* verify fsid */ 38683d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 38693d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 38703d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 387142c1b124SIlya Dryomov goto bad; 38723d14c5d2SYehuda Sadeh 3873b7ec35b3SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3874b7ec35b3SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3875b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 387642c1b124SIlya Dryomov have_pool_full(osdc); 38779a1ea2dbSJosh Durgin 38783d14c5d2SYehuda Sadeh /* incremental maps */ 38793d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 38803d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 38813d14c5d2SYehuda Sadeh while (nr_maps > 0) { 38823d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 38833d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 38843d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 38853d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 388642c1b124SIlya Dryomov if (osdc->osdmap->epoch && 388742c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 38883d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 38893d14c5d2SYehuda Sadeh epoch, maplen); 38905aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 38915aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 389242c1b124SIlya Dryomov if (err) 38933d14c5d2SYehuda Sadeh goto bad; 389442c1b124SIlya Dryomov handled_incremental = true; 38953d14c5d2SYehuda Sadeh } else { 38963d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 38973d14c5d2SYehuda Sadeh epoch, maplen); 38983d14c5d2SYehuda Sadeh } 389942c1b124SIlya Dryomov p += maplen; 39003d14c5d2SYehuda Sadeh nr_maps--; 39013d14c5d2SYehuda Sadeh } 390242c1b124SIlya Dryomov if (handled_incremental) 39033d14c5d2SYehuda Sadeh goto done; 39043d14c5d2SYehuda Sadeh 39053d14c5d2SYehuda Sadeh /* full maps */ 39063d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 39073d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 39083d14c5d2SYehuda Sadeh while (nr_maps) { 39093d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 39103d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 39113d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 39123d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 39133d14c5d2SYehuda Sadeh if (nr_maps > 1) { 39143d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 39153d14c5d2SYehuda Sadeh epoch, maplen); 3916e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 39173d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 39183d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 39193d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 39203d14c5d2SYehuda Sadeh } else { 39213d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 39225aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 39235aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 392442c1b124SIlya Dryomov if (err) 39253d14c5d2SYehuda Sadeh goto bad; 39263d14c5d2SYehuda Sadeh } 39273d14c5d2SYehuda Sadeh p += maplen; 39283d14c5d2SYehuda Sadeh nr_maps--; 39293d14c5d2SYehuda Sadeh } 39303d14c5d2SYehuda Sadeh 39313d14c5d2SYehuda Sadeh done: 3932cd634fb6SSage Weil /* 3933cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 3934cd634fb6SSage Weil * we find out when we are no longer full and stop returning 3935cd634fb6SSage Weil * ENOSPC. 3936cd634fb6SSage Weil */ 3937b7ec35b3SIlya Dryomov pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3938b7ec35b3SIlya Dryomov pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3939b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 394042c1b124SIlya Dryomov have_pool_full(osdc); 394158eb7932SJeff Layton if (was_pauserd || was_pausewr || pauserd || pausewr || 394258eb7932SJeff Layton osdc->osdmap->epoch < osdc->epoch_barrier) 394342c1b124SIlya Dryomov maybe_request_map(osdc); 3944cd634fb6SSage Weil 39455aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 394642c1b124SIlya Dryomov 3947fc36d0a4SJeff Layton ceph_osdc_abort_on_full(osdc); 394842c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 394942c1b124SIlya Dryomov osdc->osdmap->epoch); 39505aea3dcdSIlya Dryomov up_write(&osdc->lock); 39513d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 39523d14c5d2SYehuda Sadeh return; 39533d14c5d2SYehuda Sadeh 39543d14c5d2SYehuda Sadeh bad: 39553d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 39563d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 39575aea3dcdSIlya Dryomov up_write(&osdc->lock); 39585aea3dcdSIlya Dryomov } 39595aea3dcdSIlya Dryomov 39605aea3dcdSIlya Dryomov /* 39615aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 39625aea3dcdSIlya Dryomov */ 39635aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 39645aea3dcdSIlya Dryomov { 39655aea3dcdSIlya Dryomov struct rb_node *n; 39665aea3dcdSIlya Dryomov 3967a02a946dSIlya Dryomov clear_backoffs(osd); 3968a02a946dSIlya Dryomov 3969922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 39705aea3dcdSIlya Dryomov struct ceph_osd_request *req = 39715aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 39725aea3dcdSIlya Dryomov 3973922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 3974922dab61SIlya Dryomov 39755aea3dcdSIlya Dryomov if (!req->r_linger) { 39765aea3dcdSIlya Dryomov if (!req->r_t.paused) 39775aea3dcdSIlya Dryomov send_request(req); 3978922dab61SIlya Dryomov } else { 3979922dab61SIlya Dryomov cancel_linger_request(req); 39805aea3dcdSIlya Dryomov } 39815aea3dcdSIlya Dryomov } 3982922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 3983922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3984922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3985922dab61SIlya Dryomov 3986922dab61SIlya Dryomov send_linger(lreq); 3987922dab61SIlya Dryomov } 39885aea3dcdSIlya Dryomov } 39895aea3dcdSIlya Dryomov 39905aea3dcdSIlya Dryomov /* 39915aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 39925aea3dcdSIlya Dryomov */ 39935aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 39945aea3dcdSIlya Dryomov { 39955aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 39965aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 39975aea3dcdSIlya Dryomov 39985aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 39995aea3dcdSIlya Dryomov 40005aea3dcdSIlya Dryomov down_write(&osdc->lock); 40015aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 40025aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 40035aea3dcdSIlya Dryomov goto out_unlock; 40045aea3dcdSIlya Dryomov } 40055aea3dcdSIlya Dryomov 40065aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 40075aea3dcdSIlya Dryomov kick_osd_requests(osd); 40085aea3dcdSIlya Dryomov maybe_request_map(osdc); 40095aea3dcdSIlya Dryomov 40105aea3dcdSIlya Dryomov out_unlock: 40115aea3dcdSIlya Dryomov up_write(&osdc->lock); 40123d14c5d2SYehuda Sadeh } 40133d14c5d2SYehuda Sadeh 4014a02a946dSIlya Dryomov struct MOSDBackoff { 4015a02a946dSIlya Dryomov struct ceph_spg spgid; 4016a02a946dSIlya Dryomov u32 map_epoch; 4017a02a946dSIlya Dryomov u8 op; 4018a02a946dSIlya Dryomov u64 id; 4019a02a946dSIlya Dryomov struct ceph_hobject_id *begin; 4020a02a946dSIlya Dryomov struct ceph_hobject_id *end; 4021a02a946dSIlya Dryomov }; 4022a02a946dSIlya Dryomov 4023a02a946dSIlya Dryomov static int decode_MOSDBackoff(const struct ceph_msg *msg, struct MOSDBackoff *m) 4024a02a946dSIlya Dryomov { 4025a02a946dSIlya Dryomov void *p = msg->front.iov_base; 4026a02a946dSIlya Dryomov void *const end = p + msg->front.iov_len; 4027a02a946dSIlya Dryomov u8 struct_v; 4028a02a946dSIlya Dryomov u32 struct_len; 4029a02a946dSIlya Dryomov int ret; 4030a02a946dSIlya Dryomov 4031a02a946dSIlya Dryomov ret = ceph_start_decoding(&p, end, 1, "spg_t", &struct_v, &struct_len); 4032a02a946dSIlya Dryomov if (ret) 4033a02a946dSIlya Dryomov return ret; 4034a02a946dSIlya Dryomov 4035a02a946dSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->spgid.pgid); 4036a02a946dSIlya Dryomov if (ret) 4037a02a946dSIlya Dryomov return ret; 4038a02a946dSIlya Dryomov 4039a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->spgid.shard, e_inval); 4040a02a946dSIlya Dryomov ceph_decode_32_safe(&p, end, m->map_epoch, e_inval); 4041a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->op, e_inval); 4042a02a946dSIlya Dryomov ceph_decode_64_safe(&p, end, m->id, e_inval); 4043a02a946dSIlya Dryomov 4044a02a946dSIlya Dryomov m->begin = kzalloc(sizeof(*m->begin), GFP_NOIO); 4045a02a946dSIlya Dryomov if (!m->begin) 4046a02a946dSIlya Dryomov return -ENOMEM; 4047a02a946dSIlya Dryomov 4048a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->begin); 4049a02a946dSIlya Dryomov if (ret) { 4050a02a946dSIlya Dryomov free_hoid(m->begin); 4051a02a946dSIlya Dryomov return ret; 4052a02a946dSIlya Dryomov } 4053a02a946dSIlya Dryomov 4054a02a946dSIlya Dryomov m->end = kzalloc(sizeof(*m->end), GFP_NOIO); 4055a02a946dSIlya Dryomov if (!m->end) { 4056a02a946dSIlya Dryomov free_hoid(m->begin); 4057a02a946dSIlya Dryomov return -ENOMEM; 4058a02a946dSIlya Dryomov } 4059a02a946dSIlya Dryomov 4060a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->end); 4061a02a946dSIlya Dryomov if (ret) { 4062a02a946dSIlya Dryomov free_hoid(m->begin); 4063a02a946dSIlya Dryomov free_hoid(m->end); 4064a02a946dSIlya Dryomov return ret; 4065a02a946dSIlya Dryomov } 4066a02a946dSIlya Dryomov 4067a02a946dSIlya Dryomov return 0; 4068a02a946dSIlya Dryomov 4069a02a946dSIlya Dryomov e_inval: 4070a02a946dSIlya Dryomov return -EINVAL; 4071a02a946dSIlya Dryomov } 4072a02a946dSIlya Dryomov 4073a02a946dSIlya Dryomov static struct ceph_msg *create_backoff_message( 4074a02a946dSIlya Dryomov const struct ceph_osd_backoff *backoff, 4075a02a946dSIlya Dryomov u32 map_epoch) 4076a02a946dSIlya Dryomov { 4077a02a946dSIlya Dryomov struct ceph_msg *msg; 4078a02a946dSIlya Dryomov void *p, *end; 4079a02a946dSIlya Dryomov int msg_size; 4080a02a946dSIlya Dryomov 4081a02a946dSIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 4082a02a946dSIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 4083a02a946dSIlya Dryomov msg_size += 4 + 1 + 8; /* map_epoch, op, id */ 4084a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4085a02a946dSIlya Dryomov hoid_encoding_size(backoff->begin); 4086a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4087a02a946dSIlya Dryomov hoid_encoding_size(backoff->end); 4088a02a946dSIlya Dryomov 4089a02a946dSIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_BACKOFF, msg_size, GFP_NOIO, true); 4090a02a946dSIlya Dryomov if (!msg) 4091a02a946dSIlya Dryomov return NULL; 4092a02a946dSIlya Dryomov 4093a02a946dSIlya Dryomov p = msg->front.iov_base; 4094a02a946dSIlya Dryomov end = p + msg->front_alloc_len; 4095a02a946dSIlya Dryomov 4096a02a946dSIlya Dryomov encode_spgid(&p, &backoff->spgid); 4097a02a946dSIlya Dryomov ceph_encode_32(&p, map_epoch); 4098a02a946dSIlya Dryomov ceph_encode_8(&p, CEPH_OSD_BACKOFF_OP_ACK_BLOCK); 4099a02a946dSIlya Dryomov ceph_encode_64(&p, backoff->id); 4100a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->begin); 4101a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->end); 4102a02a946dSIlya Dryomov BUG_ON(p != end); 4103a02a946dSIlya Dryomov 4104a02a946dSIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 4105a02a946dSIlya Dryomov msg->hdr.version = cpu_to_le16(1); /* MOSDBackoff v1 */ 4106a02a946dSIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 4107a02a946dSIlya Dryomov 4108a02a946dSIlya Dryomov return msg; 4109a02a946dSIlya Dryomov } 4110a02a946dSIlya Dryomov 4111a02a946dSIlya Dryomov static void handle_backoff_block(struct ceph_osd *osd, struct MOSDBackoff *m) 4112a02a946dSIlya Dryomov { 4113a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4114a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4115a02a946dSIlya Dryomov struct ceph_msg *msg; 4116a02a946dSIlya Dryomov 4117a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4118a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4119a02a946dSIlya Dryomov 4120a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &m->spgid); 4121a02a946dSIlya Dryomov if (!spg) { 4122a02a946dSIlya Dryomov spg = alloc_spg_mapping(); 4123a02a946dSIlya Dryomov if (!spg) { 4124a02a946dSIlya Dryomov pr_err("%s failed to allocate spg\n", __func__); 4125a02a946dSIlya Dryomov return; 4126a02a946dSIlya Dryomov } 4127a02a946dSIlya Dryomov spg->spgid = m->spgid; /* struct */ 4128a02a946dSIlya Dryomov insert_spg_mapping(&osd->o_backoff_mappings, spg); 4129a02a946dSIlya Dryomov } 4130a02a946dSIlya Dryomov 4131a02a946dSIlya Dryomov backoff = alloc_backoff(); 4132a02a946dSIlya Dryomov if (!backoff) { 4133a02a946dSIlya Dryomov pr_err("%s failed to allocate backoff\n", __func__); 4134a02a946dSIlya Dryomov return; 4135a02a946dSIlya Dryomov } 4136a02a946dSIlya Dryomov backoff->spgid = m->spgid; /* struct */ 4137a02a946dSIlya Dryomov backoff->id = m->id; 4138a02a946dSIlya Dryomov backoff->begin = m->begin; 4139a02a946dSIlya Dryomov m->begin = NULL; /* backoff now owns this */ 4140a02a946dSIlya Dryomov backoff->end = m->end; 4141a02a946dSIlya Dryomov m->end = NULL; /* ditto */ 4142a02a946dSIlya Dryomov 4143a02a946dSIlya Dryomov insert_backoff(&spg->backoffs, backoff); 4144a02a946dSIlya Dryomov insert_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4145a02a946dSIlya Dryomov 4146a02a946dSIlya Dryomov /* 4147a02a946dSIlya Dryomov * Ack with original backoff's epoch so that the OSD can 4148a02a946dSIlya Dryomov * discard this if there was a PG split. 4149a02a946dSIlya Dryomov */ 4150a02a946dSIlya Dryomov msg = create_backoff_message(backoff, m->map_epoch); 4151a02a946dSIlya Dryomov if (!msg) { 4152a02a946dSIlya Dryomov pr_err("%s failed to allocate msg\n", __func__); 4153a02a946dSIlya Dryomov return; 4154a02a946dSIlya Dryomov } 4155a02a946dSIlya Dryomov ceph_con_send(&osd->o_con, msg); 4156a02a946dSIlya Dryomov } 4157a02a946dSIlya Dryomov 4158a02a946dSIlya Dryomov static bool target_contained_by(const struct ceph_osd_request_target *t, 4159a02a946dSIlya Dryomov const struct ceph_hobject_id *begin, 4160a02a946dSIlya Dryomov const struct ceph_hobject_id *end) 4161a02a946dSIlya Dryomov { 4162a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 4163a02a946dSIlya Dryomov int cmp; 4164a02a946dSIlya Dryomov 4165a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, t); 4166a02a946dSIlya Dryomov cmp = hoid_compare(&hoid, begin); 4167a02a946dSIlya Dryomov return !cmp || (cmp > 0 && hoid_compare(&hoid, end) < 0); 4168a02a946dSIlya Dryomov } 4169a02a946dSIlya Dryomov 4170a02a946dSIlya Dryomov static void handle_backoff_unblock(struct ceph_osd *osd, 4171a02a946dSIlya Dryomov const struct MOSDBackoff *m) 4172a02a946dSIlya Dryomov { 4173a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4174a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4175a02a946dSIlya Dryomov struct rb_node *n; 4176a02a946dSIlya Dryomov 4177a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4178a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4179a02a946dSIlya Dryomov 4180a02a946dSIlya Dryomov backoff = lookup_backoff_by_id(&osd->o_backoffs_by_id, m->id); 4181a02a946dSIlya Dryomov if (!backoff) { 4182a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu backoff dne\n", 4183a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4184a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4185a02a946dSIlya Dryomov return; 4186a02a946dSIlya Dryomov } 4187a02a946dSIlya Dryomov 4188a02a946dSIlya Dryomov if (hoid_compare(backoff->begin, m->begin) && 4189a02a946dSIlya Dryomov hoid_compare(backoff->end, m->end)) { 4190a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu bad range?\n", 4191a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4192a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4193a02a946dSIlya Dryomov /* unblock it anyway... */ 4194a02a946dSIlya Dryomov } 4195a02a946dSIlya Dryomov 4196a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &backoff->spgid); 4197a02a946dSIlya Dryomov BUG_ON(!spg); 4198a02a946dSIlya Dryomov 4199a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 4200a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4201a02a946dSIlya Dryomov free_backoff(backoff); 4202a02a946dSIlya Dryomov 4203a02a946dSIlya Dryomov if (RB_EMPTY_ROOT(&spg->backoffs)) { 4204a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 4205a02a946dSIlya Dryomov free_spg_mapping(spg); 4206a02a946dSIlya Dryomov } 4207a02a946dSIlya Dryomov 4208a02a946dSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 4209a02a946dSIlya Dryomov struct ceph_osd_request *req = 4210a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 4211a02a946dSIlya Dryomov 4212a02a946dSIlya Dryomov if (!ceph_spg_compare(&req->r_t.spgid, &m->spgid)) { 4213a02a946dSIlya Dryomov /* 4214a02a946dSIlya Dryomov * Match against @m, not @backoff -- the PG may 4215a02a946dSIlya Dryomov * have split on the OSD. 4216a02a946dSIlya Dryomov */ 4217a02a946dSIlya Dryomov if (target_contained_by(&req->r_t, m->begin, m->end)) { 4218a02a946dSIlya Dryomov /* 4219a02a946dSIlya Dryomov * If no other installed backoff applies, 4220a02a946dSIlya Dryomov * resend. 4221a02a946dSIlya Dryomov */ 4222a02a946dSIlya Dryomov send_request(req); 4223a02a946dSIlya Dryomov } 4224a02a946dSIlya Dryomov } 4225a02a946dSIlya Dryomov } 4226a02a946dSIlya Dryomov } 4227a02a946dSIlya Dryomov 4228a02a946dSIlya Dryomov static void handle_backoff(struct ceph_osd *osd, struct ceph_msg *msg) 4229a02a946dSIlya Dryomov { 4230a02a946dSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 4231a02a946dSIlya Dryomov struct MOSDBackoff m; 4232a02a946dSIlya Dryomov int ret; 4233a02a946dSIlya Dryomov 4234a02a946dSIlya Dryomov down_read(&osdc->lock); 4235a02a946dSIlya Dryomov if (!osd_registered(osd)) { 4236a02a946dSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 4237a02a946dSIlya Dryomov up_read(&osdc->lock); 4238a02a946dSIlya Dryomov return; 4239a02a946dSIlya Dryomov } 4240a02a946dSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 4241a02a946dSIlya Dryomov 4242a02a946dSIlya Dryomov mutex_lock(&osd->lock); 4243a02a946dSIlya Dryomov ret = decode_MOSDBackoff(msg, &m); 4244a02a946dSIlya Dryomov if (ret) { 4245a02a946dSIlya Dryomov pr_err("failed to decode MOSDBackoff: %d\n", ret); 4246a02a946dSIlya Dryomov ceph_msg_dump(msg); 4247a02a946dSIlya Dryomov goto out_unlock; 4248a02a946dSIlya Dryomov } 4249a02a946dSIlya Dryomov 4250a02a946dSIlya Dryomov switch (m.op) { 4251a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_BLOCK: 4252a02a946dSIlya Dryomov handle_backoff_block(osd, &m); 4253a02a946dSIlya Dryomov break; 4254a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_UNBLOCK: 4255a02a946dSIlya Dryomov handle_backoff_unblock(osd, &m); 4256a02a946dSIlya Dryomov break; 4257a02a946dSIlya Dryomov default: 4258a02a946dSIlya Dryomov pr_err("%s osd%d unknown op %d\n", __func__, osd->o_osd, m.op); 4259a02a946dSIlya Dryomov } 4260a02a946dSIlya Dryomov 4261a02a946dSIlya Dryomov free_hoid(m.begin); 4262a02a946dSIlya Dryomov free_hoid(m.end); 4263a02a946dSIlya Dryomov 4264a02a946dSIlya Dryomov out_unlock: 4265a02a946dSIlya Dryomov mutex_unlock(&osd->lock); 4266a02a946dSIlya Dryomov up_read(&osdc->lock); 4267a02a946dSIlya Dryomov } 4268a02a946dSIlya Dryomov 42693d14c5d2SYehuda Sadeh /* 4270a40c4f10SYehuda Sadeh * Process osd watch notifications 4271a40c4f10SYehuda Sadeh */ 42723c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 42733c663bbdSAlex Elder struct ceph_msg *msg) 4274a40c4f10SYehuda Sadeh { 4275922dab61SIlya Dryomov void *p = msg->front.iov_base; 4276922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 4277922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4278922dab61SIlya Dryomov struct linger_work *lwork; 4279922dab61SIlya Dryomov u8 proto_ver, opcode; 4280922dab61SIlya Dryomov u64 cookie, notify_id; 4281922dab61SIlya Dryomov u64 notifier_id = 0; 428219079203SIlya Dryomov s32 return_code = 0; 4283922dab61SIlya Dryomov void *payload = NULL; 4284922dab61SIlya Dryomov u32 payload_len = 0; 4285a40c4f10SYehuda Sadeh 4286a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 4287a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 4288a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 4289922dab61SIlya Dryomov p += 8; /* skip ver */ 4290a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 4291a40c4f10SYehuda Sadeh 4292922dab61SIlya Dryomov if (proto_ver >= 1) { 4293922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 4294922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 4295922dab61SIlya Dryomov payload = p; 4296922dab61SIlya Dryomov p += payload_len; 4297a40c4f10SYehuda Sadeh } 4298a40c4f10SYehuda Sadeh 4299922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 430019079203SIlya Dryomov ceph_decode_32_safe(&p, end, return_code, bad); 4301922dab61SIlya Dryomov 4302922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 4303922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 4304922dab61SIlya Dryomov 4305922dab61SIlya Dryomov down_read(&osdc->lock); 4306922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 4307922dab61SIlya Dryomov if (!lreq) { 4308922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 4309922dab61SIlya Dryomov cookie); 4310922dab61SIlya Dryomov goto out_unlock_osdc; 4311922dab61SIlya Dryomov } 4312922dab61SIlya Dryomov 4313922dab61SIlya Dryomov mutex_lock(&lreq->lock); 431419079203SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, 431519079203SIlya Dryomov opcode, cookie, lreq, lreq->is_watch); 4316922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 4317922dab61SIlya Dryomov if (!lreq->last_error) { 4318922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 4319922dab61SIlya Dryomov queue_watch_error(lreq); 4320922dab61SIlya Dryomov } 432119079203SIlya Dryomov } else if (!lreq->is_watch) { 432219079203SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ 432319079203SIlya Dryomov if (lreq->notify_id && lreq->notify_id != notify_id) { 432419079203SIlya Dryomov dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, 432519079203SIlya Dryomov lreq->notify_id, notify_id); 432619079203SIlya Dryomov } else if (!completion_done(&lreq->notify_finish_wait)) { 432719079203SIlya Dryomov struct ceph_msg_data *data = 432819079203SIlya Dryomov list_first_entry_or_null(&msg->data, 432919079203SIlya Dryomov struct ceph_msg_data, 433019079203SIlya Dryomov links); 433119079203SIlya Dryomov 433219079203SIlya Dryomov if (data) { 433319079203SIlya Dryomov if (lreq->preply_pages) { 433419079203SIlya Dryomov WARN_ON(data->type != 433519079203SIlya Dryomov CEPH_MSG_DATA_PAGES); 433619079203SIlya Dryomov *lreq->preply_pages = data->pages; 433719079203SIlya Dryomov *lreq->preply_len = data->length; 433819079203SIlya Dryomov } else { 433919079203SIlya Dryomov ceph_release_page_vector(data->pages, 434019079203SIlya Dryomov calc_pages_for(0, data->length)); 434119079203SIlya Dryomov } 434219079203SIlya Dryomov } 434319079203SIlya Dryomov lreq->notify_finish_error = return_code; 434419079203SIlya Dryomov complete_all(&lreq->notify_finish_wait); 434519079203SIlya Dryomov } 4346922dab61SIlya Dryomov } else { 4347922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 4348922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 4349922dab61SIlya Dryomov if (!lwork) { 4350922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 4351922dab61SIlya Dryomov goto out_unlock_lreq; 4352922dab61SIlya Dryomov } 4353922dab61SIlya Dryomov 4354922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 4355922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 4356922dab61SIlya Dryomov lwork->notify.payload = payload; 4357922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 4358922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 4359922dab61SIlya Dryomov lwork_queue(lwork); 4360922dab61SIlya Dryomov } 4361922dab61SIlya Dryomov 4362922dab61SIlya Dryomov out_unlock_lreq: 4363922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 4364922dab61SIlya Dryomov out_unlock_osdc: 4365922dab61SIlya Dryomov up_read(&osdc->lock); 4366a40c4f10SYehuda Sadeh return; 4367a40c4f10SYehuda Sadeh 4368a40c4f10SYehuda Sadeh bad: 4369a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 4370a40c4f10SYehuda Sadeh } 4371a40c4f10SYehuda Sadeh 4372a40c4f10SYehuda Sadeh /* 43733d14c5d2SYehuda Sadeh * Register request, send initial attempt. 43743d14c5d2SYehuda Sadeh */ 43753d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 43763d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 43773d14c5d2SYehuda Sadeh bool nofail) 43783d14c5d2SYehuda Sadeh { 43795aea3dcdSIlya Dryomov down_read(&osdc->lock); 43805aea3dcdSIlya Dryomov submit_request(req, false); 43815aea3dcdSIlya Dryomov up_read(&osdc->lock); 43823d14c5d2SYehuda Sadeh 43835aea3dcdSIlya Dryomov return 0; 43843d14c5d2SYehuda Sadeh } 43853d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 43863d14c5d2SYehuda Sadeh 43873d14c5d2SYehuda Sadeh /* 4388c297eb42SIlya Dryomov * Unregister a registered request. The request is not completed: 4389c297eb42SIlya Dryomov * ->r_result isn't set and __complete_request() isn't called. 4390c9f9b93dSIlya Dryomov */ 4391c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 4392c9f9b93dSIlya Dryomov { 4393c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 4394c9f9b93dSIlya Dryomov 43955aea3dcdSIlya Dryomov down_write(&osdc->lock); 43965aea3dcdSIlya Dryomov if (req->r_osd) 43975aea3dcdSIlya Dryomov cancel_request(req); 43985aea3dcdSIlya Dryomov up_write(&osdc->lock); 4399c9f9b93dSIlya Dryomov } 4400c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 4401c9f9b93dSIlya Dryomov 4402c9f9b93dSIlya Dryomov /* 440342b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 440442b06965SIlya Dryomov */ 440542b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 440642b06965SIlya Dryomov unsigned long timeout) 440742b06965SIlya Dryomov { 440842b06965SIlya Dryomov long left; 440942b06965SIlya Dryomov 441042b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 44110e76abf2SYan, Zheng left = wait_for_completion_killable_timeout(&req->r_completion, 441242b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 441342b06965SIlya Dryomov if (left <= 0) { 441442b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 441542b06965SIlya Dryomov ceph_osdc_cancel_request(req); 441642b06965SIlya Dryomov } else { 441742b06965SIlya Dryomov left = req->r_result; /* completed */ 441842b06965SIlya Dryomov } 441942b06965SIlya Dryomov 442042b06965SIlya Dryomov return left; 442142b06965SIlya Dryomov } 442242b06965SIlya Dryomov 442342b06965SIlya Dryomov /* 44243d14c5d2SYehuda Sadeh * wait for a request to complete 44253d14c5d2SYehuda Sadeh */ 44263d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 44273d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 44283d14c5d2SYehuda Sadeh { 442942b06965SIlya Dryomov return wait_request_timeout(req, 0); 44303d14c5d2SYehuda Sadeh } 44313d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 44323d14c5d2SYehuda Sadeh 44333d14c5d2SYehuda Sadeh /* 44343d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 44353d14c5d2SYehuda Sadeh */ 44363d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 44373d14c5d2SYehuda Sadeh { 44385aea3dcdSIlya Dryomov struct rb_node *n, *p; 44395aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 44403d14c5d2SYehuda Sadeh 44415aea3dcdSIlya Dryomov again: 44425aea3dcdSIlya Dryomov down_read(&osdc->lock); 44435aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 44445aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 44455aea3dcdSIlya Dryomov 44465aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 44475aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 44485aea3dcdSIlya Dryomov struct ceph_osd_request *req = 44495aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 44505aea3dcdSIlya Dryomov 44513d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 44523d14c5d2SYehuda Sadeh break; 44533d14c5d2SYehuda Sadeh 44545aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 44553d14c5d2SYehuda Sadeh continue; 44563d14c5d2SYehuda Sadeh 44573d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 44585aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 44595aea3dcdSIlya Dryomov up_read(&osdc->lock); 44605aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 44615aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 4462b18b9550SIlya Dryomov wait_for_completion(&req->r_completion); 44633d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 44645aea3dcdSIlya Dryomov goto again; 44653d14c5d2SYehuda Sadeh } 44665aea3dcdSIlya Dryomov 44675aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 44685aea3dcdSIlya Dryomov } 44695aea3dcdSIlya Dryomov 44705aea3dcdSIlya Dryomov up_read(&osdc->lock); 44715aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 44723d14c5d2SYehuda Sadeh } 44733d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 44743d14c5d2SYehuda Sadeh 4475922dab61SIlya Dryomov static struct ceph_osd_request * 4476922dab61SIlya Dryomov alloc_linger_request(struct ceph_osd_linger_request *lreq) 4477922dab61SIlya Dryomov { 4478922dab61SIlya Dryomov struct ceph_osd_request *req; 4479922dab61SIlya Dryomov 4480922dab61SIlya Dryomov req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); 4481922dab61SIlya Dryomov if (!req) 4482922dab61SIlya Dryomov return NULL; 4483922dab61SIlya Dryomov 4484922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4485922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 4486922dab61SIlya Dryomov return req; 4487922dab61SIlya Dryomov } 4488922dab61SIlya Dryomov 448939e58c34SIlya Dryomov static struct ceph_osd_request * 449039e58c34SIlya Dryomov alloc_watch_request(struct ceph_osd_linger_request *lreq, u8 watch_opcode) 449139e58c34SIlya Dryomov { 449239e58c34SIlya Dryomov struct ceph_osd_request *req; 449339e58c34SIlya Dryomov 449439e58c34SIlya Dryomov req = alloc_linger_request(lreq); 449539e58c34SIlya Dryomov if (!req) 449639e58c34SIlya Dryomov return NULL; 449739e58c34SIlya Dryomov 449839e58c34SIlya Dryomov /* 449939e58c34SIlya Dryomov * Pass 0 for cookie because we don't know it yet, it will be 450039e58c34SIlya Dryomov * filled in by linger_submit(). 450139e58c34SIlya Dryomov */ 450239e58c34SIlya Dryomov osd_req_op_watch_init(req, 0, 0, watch_opcode); 450326f887e0SIlya Dryomov 450426f887e0SIlya Dryomov if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { 450526f887e0SIlya Dryomov ceph_osdc_put_request(req); 450626f887e0SIlya Dryomov return NULL; 450726f887e0SIlya Dryomov } 450826f887e0SIlya Dryomov 450939e58c34SIlya Dryomov return req; 451039e58c34SIlya Dryomov } 451139e58c34SIlya Dryomov 4512922dab61SIlya Dryomov /* 4513922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 4514922dab61SIlya Dryomov */ 4515922dab61SIlya Dryomov struct ceph_osd_linger_request * 4516922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 4517922dab61SIlya Dryomov struct ceph_object_id *oid, 4518922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4519922dab61SIlya Dryomov rados_watchcb2_t wcb, 4520922dab61SIlya Dryomov rados_watcherrcb_t errcb, 4521922dab61SIlya Dryomov void *data) 4522922dab61SIlya Dryomov { 4523922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4524922dab61SIlya Dryomov int ret; 4525922dab61SIlya Dryomov 4526922dab61SIlya Dryomov lreq = linger_alloc(osdc); 4527922dab61SIlya Dryomov if (!lreq) 4528922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 4529922dab61SIlya Dryomov 453019079203SIlya Dryomov lreq->is_watch = true; 4531922dab61SIlya Dryomov lreq->wcb = wcb; 4532922dab61SIlya Dryomov lreq->errcb = errcb; 4533922dab61SIlya Dryomov lreq->data = data; 4534b07d3c4bSIlya Dryomov lreq->watch_valid_thru = jiffies; 4535922dab61SIlya Dryomov 4536922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 4537922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 453854ea0046SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE; 4539fac02ddfSArnd Bergmann ktime_get_real_ts64(&lreq->mtime); 4540922dab61SIlya Dryomov 454139e58c34SIlya Dryomov lreq->reg_req = alloc_watch_request(lreq, CEPH_OSD_WATCH_OP_WATCH); 4542922dab61SIlya Dryomov if (!lreq->reg_req) { 4543922dab61SIlya Dryomov ret = -ENOMEM; 4544922dab61SIlya Dryomov goto err_put_lreq; 4545922dab61SIlya Dryomov } 4546922dab61SIlya Dryomov 454739e58c34SIlya Dryomov lreq->ping_req = alloc_watch_request(lreq, CEPH_OSD_WATCH_OP_PING); 4548922dab61SIlya Dryomov if (!lreq->ping_req) { 4549922dab61SIlya Dryomov ret = -ENOMEM; 4550922dab61SIlya Dryomov goto err_put_lreq; 4551922dab61SIlya Dryomov } 4552922dab61SIlya Dryomov 455381c65213SIlya Dryomov linger_submit(lreq); 4554922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 4555922dab61SIlya Dryomov if (ret) { 4556922dab61SIlya Dryomov linger_cancel(lreq); 4557922dab61SIlya Dryomov goto err_put_lreq; 4558922dab61SIlya Dryomov } 4559922dab61SIlya Dryomov 4560922dab61SIlya Dryomov return lreq; 4561922dab61SIlya Dryomov 4562922dab61SIlya Dryomov err_put_lreq: 4563922dab61SIlya Dryomov linger_put(lreq); 4564922dab61SIlya Dryomov return ERR_PTR(ret); 4565922dab61SIlya Dryomov } 4566922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 4567922dab61SIlya Dryomov 4568922dab61SIlya Dryomov /* 4569922dab61SIlya Dryomov * Releases a ref. 4570922dab61SIlya Dryomov * 4571922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 4572922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 4573922dab61SIlya Dryomov * with mount_timeout"). 4574922dab61SIlya Dryomov */ 4575922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 4576922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 4577922dab61SIlya Dryomov { 4578922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 4579922dab61SIlya Dryomov struct ceph_osd_request *req; 4580922dab61SIlya Dryomov int ret; 4581922dab61SIlya Dryomov 4582922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4583922dab61SIlya Dryomov if (!req) 4584922dab61SIlya Dryomov return -ENOMEM; 4585922dab61SIlya Dryomov 4586922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4587922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 458854ea0046SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE; 4589fac02ddfSArnd Bergmann ktime_get_real_ts64(&req->r_mtime); 4590922dab61SIlya Dryomov osd_req_op_watch_init(req, 0, lreq->linger_id, 4591922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_UNWATCH); 4592922dab61SIlya Dryomov 4593922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4594922dab61SIlya Dryomov if (ret) 4595922dab61SIlya Dryomov goto out_put_req; 4596922dab61SIlya Dryomov 4597922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 4598922dab61SIlya Dryomov linger_cancel(lreq); 4599922dab61SIlya Dryomov linger_put(lreq); 4600922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 4601922dab61SIlya Dryomov 4602922dab61SIlya Dryomov out_put_req: 4603922dab61SIlya Dryomov ceph_osdc_put_request(req); 4604922dab61SIlya Dryomov return ret; 4605922dab61SIlya Dryomov } 4606922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 4607922dab61SIlya Dryomov 4608922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 4609922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 46106d54228fSIlya Dryomov u32 payload_len) 4611922dab61SIlya Dryomov { 4612922dab61SIlya Dryomov struct ceph_osd_req_op *op; 4613922dab61SIlya Dryomov struct ceph_pagelist *pl; 4614922dab61SIlya Dryomov int ret; 4615922dab61SIlya Dryomov 4616922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 4617922dab61SIlya Dryomov 461833165d47SIlya Dryomov pl = ceph_pagelist_alloc(GFP_NOIO); 4619922dab61SIlya Dryomov if (!pl) 4620922dab61SIlya Dryomov return -ENOMEM; 4621922dab61SIlya Dryomov 4622922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 4623922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 4624922dab61SIlya Dryomov if (payload) { 4625922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 4626922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 4627922dab61SIlya Dryomov } else { 4628922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 4629922dab61SIlya Dryomov } 4630922dab61SIlya Dryomov if (ret) { 4631922dab61SIlya Dryomov ceph_pagelist_release(pl); 4632922dab61SIlya Dryomov return -ENOMEM; 4633922dab61SIlya Dryomov } 4634922dab61SIlya Dryomov 4635922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 4636922dab61SIlya Dryomov op->indata_len = pl->length; 4637922dab61SIlya Dryomov return 0; 4638922dab61SIlya Dryomov } 4639922dab61SIlya Dryomov 4640922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 4641922dab61SIlya Dryomov struct ceph_object_id *oid, 4642922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4643922dab61SIlya Dryomov u64 notify_id, 4644922dab61SIlya Dryomov u64 cookie, 4645922dab61SIlya Dryomov void *payload, 46466d54228fSIlya Dryomov u32 payload_len) 4647922dab61SIlya Dryomov { 4648922dab61SIlya Dryomov struct ceph_osd_request *req; 4649922dab61SIlya Dryomov int ret; 4650922dab61SIlya Dryomov 4651922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4652922dab61SIlya Dryomov if (!req) 4653922dab61SIlya Dryomov return -ENOMEM; 4654922dab61SIlya Dryomov 4655922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 4656922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 4657922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 4658922dab61SIlya Dryomov 465926f887e0SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 466026f887e0SIlya Dryomov payload_len); 4661922dab61SIlya Dryomov if (ret) 4662922dab61SIlya Dryomov goto out_put_req; 4663922dab61SIlya Dryomov 466426f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4665922dab61SIlya Dryomov if (ret) 4666922dab61SIlya Dryomov goto out_put_req; 4667922dab61SIlya Dryomov 4668922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 4669922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 4670922dab61SIlya Dryomov 4671922dab61SIlya Dryomov out_put_req: 4672922dab61SIlya Dryomov ceph_osdc_put_request(req); 4673922dab61SIlya Dryomov return ret; 4674922dab61SIlya Dryomov } 4675922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 4676922dab61SIlya Dryomov 467719079203SIlya Dryomov static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, 467819079203SIlya Dryomov u64 cookie, u32 prot_ver, u32 timeout, 46796d54228fSIlya Dryomov void *payload, u32 payload_len) 468019079203SIlya Dryomov { 468119079203SIlya Dryomov struct ceph_osd_req_op *op; 468219079203SIlya Dryomov struct ceph_pagelist *pl; 468319079203SIlya Dryomov int ret; 468419079203SIlya Dryomov 468519079203SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); 468619079203SIlya Dryomov op->notify.cookie = cookie; 468719079203SIlya Dryomov 468833165d47SIlya Dryomov pl = ceph_pagelist_alloc(GFP_NOIO); 468919079203SIlya Dryomov if (!pl) 469019079203SIlya Dryomov return -ENOMEM; 469119079203SIlya Dryomov 469219079203SIlya Dryomov ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ 469319079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, timeout); 469419079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 469519079203SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 469619079203SIlya Dryomov if (ret) { 469719079203SIlya Dryomov ceph_pagelist_release(pl); 469819079203SIlya Dryomov return -ENOMEM; 469919079203SIlya Dryomov } 470019079203SIlya Dryomov 470119079203SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify.request_data, pl); 470219079203SIlya Dryomov op->indata_len = pl->length; 470319079203SIlya Dryomov return 0; 470419079203SIlya Dryomov } 470519079203SIlya Dryomov 470619079203SIlya Dryomov /* 470719079203SIlya Dryomov * @timeout: in seconds 470819079203SIlya Dryomov * 470919079203SIlya Dryomov * @preply_{pages,len} are initialized both on success and error. 471019079203SIlya Dryomov * The caller is responsible for: 471119079203SIlya Dryomov * 471219079203SIlya Dryomov * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) 471319079203SIlya Dryomov */ 471419079203SIlya Dryomov int ceph_osdc_notify(struct ceph_osd_client *osdc, 471519079203SIlya Dryomov struct ceph_object_id *oid, 471619079203SIlya Dryomov struct ceph_object_locator *oloc, 471719079203SIlya Dryomov void *payload, 47186d54228fSIlya Dryomov u32 payload_len, 471919079203SIlya Dryomov u32 timeout, 472019079203SIlya Dryomov struct page ***preply_pages, 472119079203SIlya Dryomov size_t *preply_len) 472219079203SIlya Dryomov { 472319079203SIlya Dryomov struct ceph_osd_linger_request *lreq; 472419079203SIlya Dryomov struct page **pages; 472519079203SIlya Dryomov int ret; 472619079203SIlya Dryomov 472719079203SIlya Dryomov WARN_ON(!timeout); 472819079203SIlya Dryomov if (preply_pages) { 472919079203SIlya Dryomov *preply_pages = NULL; 473019079203SIlya Dryomov *preply_len = 0; 473119079203SIlya Dryomov } 473219079203SIlya Dryomov 473319079203SIlya Dryomov lreq = linger_alloc(osdc); 473419079203SIlya Dryomov if (!lreq) 473519079203SIlya Dryomov return -ENOMEM; 473619079203SIlya Dryomov 473719079203SIlya Dryomov lreq->preply_pages = preply_pages; 473819079203SIlya Dryomov lreq->preply_len = preply_len; 473919079203SIlya Dryomov 474019079203SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 474119079203SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 474219079203SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_READ; 474319079203SIlya Dryomov 474419079203SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 474519079203SIlya Dryomov if (!lreq->reg_req) { 474619079203SIlya Dryomov ret = -ENOMEM; 474719079203SIlya Dryomov goto out_put_lreq; 474819079203SIlya Dryomov } 474919079203SIlya Dryomov 475081c65213SIlya Dryomov /* 475181c65213SIlya Dryomov * Pass 0 for cookie because we don't know it yet, it will be 475281c65213SIlya Dryomov * filled in by linger_submit(). 475381c65213SIlya Dryomov */ 475481c65213SIlya Dryomov ret = osd_req_op_notify_init(lreq->reg_req, 0, 0, 1, timeout, 475581c65213SIlya Dryomov payload, payload_len); 475681c65213SIlya Dryomov if (ret) 475781c65213SIlya Dryomov goto out_put_lreq; 475881c65213SIlya Dryomov 475919079203SIlya Dryomov /* for notify_id */ 476019079203SIlya Dryomov pages = ceph_alloc_page_vector(1, GFP_NOIO); 476119079203SIlya Dryomov if (IS_ERR(pages)) { 476219079203SIlya Dryomov ret = PTR_ERR(pages); 476319079203SIlya Dryomov goto out_put_lreq; 476419079203SIlya Dryomov } 476519079203SIlya Dryomov ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, 476619079203SIlya Dryomov response_data), 476719079203SIlya Dryomov pages, PAGE_SIZE, 0, false, true); 476819079203SIlya Dryomov 476926f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(lreq->reg_req, GFP_NOIO); 477026f887e0SIlya Dryomov if (ret) 477126f887e0SIlya Dryomov goto out_put_lreq; 477226f887e0SIlya Dryomov 477381c65213SIlya Dryomov linger_submit(lreq); 477419079203SIlya Dryomov ret = linger_reg_commit_wait(lreq); 477519079203SIlya Dryomov if (!ret) 477619079203SIlya Dryomov ret = linger_notify_finish_wait(lreq); 477719079203SIlya Dryomov else 477819079203SIlya Dryomov dout("lreq %p failed to initiate notify %d\n", lreq, ret); 477919079203SIlya Dryomov 478019079203SIlya Dryomov linger_cancel(lreq); 478119079203SIlya Dryomov out_put_lreq: 478219079203SIlya Dryomov linger_put(lreq); 478319079203SIlya Dryomov return ret; 478419079203SIlya Dryomov } 478519079203SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify); 478619079203SIlya Dryomov 47873d14c5d2SYehuda Sadeh /* 4788b07d3c4bSIlya Dryomov * Return the number of milliseconds since the watch was last 4789b07d3c4bSIlya Dryomov * confirmed, or an error. If there is an error, the watch is no 4790b07d3c4bSIlya Dryomov * longer valid, and should be destroyed with ceph_osdc_unwatch(). 4791b07d3c4bSIlya Dryomov */ 4792b07d3c4bSIlya Dryomov int ceph_osdc_watch_check(struct ceph_osd_client *osdc, 4793b07d3c4bSIlya Dryomov struct ceph_osd_linger_request *lreq) 4794b07d3c4bSIlya Dryomov { 4795b07d3c4bSIlya Dryomov unsigned long stamp, age; 4796b07d3c4bSIlya Dryomov int ret; 4797b07d3c4bSIlya Dryomov 4798b07d3c4bSIlya Dryomov down_read(&osdc->lock); 4799b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 4800b07d3c4bSIlya Dryomov stamp = lreq->watch_valid_thru; 4801b07d3c4bSIlya Dryomov if (!list_empty(&lreq->pending_lworks)) { 4802b07d3c4bSIlya Dryomov struct linger_work *lwork = 4803b07d3c4bSIlya Dryomov list_first_entry(&lreq->pending_lworks, 4804b07d3c4bSIlya Dryomov struct linger_work, 4805b07d3c4bSIlya Dryomov pending_item); 4806b07d3c4bSIlya Dryomov 4807b07d3c4bSIlya Dryomov if (time_before(lwork->queued_stamp, stamp)) 4808b07d3c4bSIlya Dryomov stamp = lwork->queued_stamp; 4809b07d3c4bSIlya Dryomov } 4810b07d3c4bSIlya Dryomov age = jiffies - stamp; 4811b07d3c4bSIlya Dryomov dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, 4812b07d3c4bSIlya Dryomov lreq, lreq->linger_id, age, lreq->last_error); 4813b07d3c4bSIlya Dryomov /* we are truncating to msecs, so return a safe upper bound */ 4814b07d3c4bSIlya Dryomov ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); 4815b07d3c4bSIlya Dryomov 4816b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 4817b07d3c4bSIlya Dryomov up_read(&osdc->lock); 4818b07d3c4bSIlya Dryomov return ret; 4819b07d3c4bSIlya Dryomov } 4820b07d3c4bSIlya Dryomov 4821a4ed38d7SDouglas Fuller static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) 4822a4ed38d7SDouglas Fuller { 4823a4ed38d7SDouglas Fuller u8 struct_v; 4824a4ed38d7SDouglas Fuller u32 struct_len; 4825a4ed38d7SDouglas Fuller int ret; 4826a4ed38d7SDouglas Fuller 4827a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 2, "watch_item_t", 4828a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4829a4ed38d7SDouglas Fuller if (ret) 4830a4ed38d7SDouglas Fuller return ret; 4831a4ed38d7SDouglas Fuller 4832a4ed38d7SDouglas Fuller ceph_decode_copy(p, &item->name, sizeof(item->name)); 4833a4ed38d7SDouglas Fuller item->cookie = ceph_decode_64(p); 4834a4ed38d7SDouglas Fuller *p += 4; /* skip timeout_seconds */ 4835a4ed38d7SDouglas Fuller if (struct_v >= 2) { 4836a4ed38d7SDouglas Fuller ceph_decode_copy(p, &item->addr, sizeof(item->addr)); 4837a4ed38d7SDouglas Fuller ceph_decode_addr(&item->addr); 4838a4ed38d7SDouglas Fuller } 4839a4ed38d7SDouglas Fuller 4840a4ed38d7SDouglas Fuller dout("%s %s%llu cookie %llu addr %s\n", __func__, 4841a4ed38d7SDouglas Fuller ENTITY_NAME(item->name), item->cookie, 4842a4ed38d7SDouglas Fuller ceph_pr_addr(&item->addr.in_addr)); 4843a4ed38d7SDouglas Fuller return 0; 4844a4ed38d7SDouglas Fuller } 4845a4ed38d7SDouglas Fuller 4846a4ed38d7SDouglas Fuller static int decode_watchers(void **p, void *end, 4847a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4848a4ed38d7SDouglas Fuller u32 *num_watchers) 4849a4ed38d7SDouglas Fuller { 4850a4ed38d7SDouglas Fuller u8 struct_v; 4851a4ed38d7SDouglas Fuller u32 struct_len; 4852a4ed38d7SDouglas Fuller int i; 4853a4ed38d7SDouglas Fuller int ret; 4854a4ed38d7SDouglas Fuller 4855a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t", 4856a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4857a4ed38d7SDouglas Fuller if (ret) 4858a4ed38d7SDouglas Fuller return ret; 4859a4ed38d7SDouglas Fuller 4860a4ed38d7SDouglas Fuller *num_watchers = ceph_decode_32(p); 4861a4ed38d7SDouglas Fuller *watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO); 4862a4ed38d7SDouglas Fuller if (!*watchers) 4863a4ed38d7SDouglas Fuller return -ENOMEM; 4864a4ed38d7SDouglas Fuller 4865a4ed38d7SDouglas Fuller for (i = 0; i < *num_watchers; i++) { 4866a4ed38d7SDouglas Fuller ret = decode_watcher(p, end, *watchers + i); 4867a4ed38d7SDouglas Fuller if (ret) { 4868a4ed38d7SDouglas Fuller kfree(*watchers); 4869a4ed38d7SDouglas Fuller return ret; 4870a4ed38d7SDouglas Fuller } 4871a4ed38d7SDouglas Fuller } 4872a4ed38d7SDouglas Fuller 4873a4ed38d7SDouglas Fuller return 0; 4874a4ed38d7SDouglas Fuller } 4875a4ed38d7SDouglas Fuller 4876a4ed38d7SDouglas Fuller /* 4877a4ed38d7SDouglas Fuller * On success, the caller is responsible for: 4878a4ed38d7SDouglas Fuller * 4879a4ed38d7SDouglas Fuller * kfree(watchers); 4880a4ed38d7SDouglas Fuller */ 4881a4ed38d7SDouglas Fuller int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, 4882a4ed38d7SDouglas Fuller struct ceph_object_id *oid, 4883a4ed38d7SDouglas Fuller struct ceph_object_locator *oloc, 4884a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4885a4ed38d7SDouglas Fuller u32 *num_watchers) 4886a4ed38d7SDouglas Fuller { 4887a4ed38d7SDouglas Fuller struct ceph_osd_request *req; 4888a4ed38d7SDouglas Fuller struct page **pages; 4889a4ed38d7SDouglas Fuller int ret; 4890a4ed38d7SDouglas Fuller 4891a4ed38d7SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4892a4ed38d7SDouglas Fuller if (!req) 4893a4ed38d7SDouglas Fuller return -ENOMEM; 4894a4ed38d7SDouglas Fuller 4895a4ed38d7SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 4896a4ed38d7SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 4897a4ed38d7SDouglas Fuller req->r_flags = CEPH_OSD_FLAG_READ; 4898a4ed38d7SDouglas Fuller 4899a4ed38d7SDouglas Fuller pages = ceph_alloc_page_vector(1, GFP_NOIO); 4900a4ed38d7SDouglas Fuller if (IS_ERR(pages)) { 4901a4ed38d7SDouglas Fuller ret = PTR_ERR(pages); 4902a4ed38d7SDouglas Fuller goto out_put_req; 4903a4ed38d7SDouglas Fuller } 4904a4ed38d7SDouglas Fuller 4905a4ed38d7SDouglas Fuller osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0); 4906a4ed38d7SDouglas Fuller ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers, 4907a4ed38d7SDouglas Fuller response_data), 4908a4ed38d7SDouglas Fuller pages, PAGE_SIZE, 0, false, true); 4909a4ed38d7SDouglas Fuller 491026f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 491126f887e0SIlya Dryomov if (ret) 491226f887e0SIlya Dryomov goto out_put_req; 491326f887e0SIlya Dryomov 4914a4ed38d7SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 4915a4ed38d7SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 4916a4ed38d7SDouglas Fuller if (ret >= 0) { 4917a4ed38d7SDouglas Fuller void *p = page_address(pages[0]); 4918a4ed38d7SDouglas Fuller void *const end = p + req->r_ops[0].outdata_len; 4919a4ed38d7SDouglas Fuller 4920a4ed38d7SDouglas Fuller ret = decode_watchers(&p, end, watchers, num_watchers); 4921a4ed38d7SDouglas Fuller } 4922a4ed38d7SDouglas Fuller 4923a4ed38d7SDouglas Fuller out_put_req: 4924a4ed38d7SDouglas Fuller ceph_osdc_put_request(req); 4925a4ed38d7SDouglas Fuller return ret; 4926a4ed38d7SDouglas Fuller } 4927a4ed38d7SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_list_watchers); 4928a4ed38d7SDouglas Fuller 4929b07d3c4bSIlya Dryomov /* 4930dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 4931dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 4932dd935f44SJosh Durgin */ 4933f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 4934dd935f44SJosh Durgin { 493599d16943SIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 4936dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 4937dd935f44SJosh Durgin } 4938dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 4939dd935f44SJosh Durgin 49407cca78c9SIlya Dryomov void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) 49417cca78c9SIlya Dryomov { 49427cca78c9SIlya Dryomov down_read(&osdc->lock); 49437cca78c9SIlya Dryomov maybe_request_map(osdc); 49447cca78c9SIlya Dryomov up_read(&osdc->lock); 49457cca78c9SIlya Dryomov } 49467cca78c9SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_maybe_request_map); 4947dd935f44SJosh Durgin 4948dd935f44SJosh Durgin /* 4949428a7158SDouglas Fuller * Execute an OSD class method on an object. 4950428a7158SDouglas Fuller * 4951428a7158SDouglas Fuller * @flags: CEPH_OSD_FLAG_* 49522544a020SIlya Dryomov * @resp_len: in/out param for reply length 4953428a7158SDouglas Fuller */ 4954428a7158SDouglas Fuller int ceph_osdc_call(struct ceph_osd_client *osdc, 4955428a7158SDouglas Fuller struct ceph_object_id *oid, 4956428a7158SDouglas Fuller struct ceph_object_locator *oloc, 4957428a7158SDouglas Fuller const char *class, const char *method, 4958428a7158SDouglas Fuller unsigned int flags, 4959428a7158SDouglas Fuller struct page *req_page, size_t req_len, 4960428a7158SDouglas Fuller struct page *resp_page, size_t *resp_len) 4961428a7158SDouglas Fuller { 4962428a7158SDouglas Fuller struct ceph_osd_request *req; 4963428a7158SDouglas Fuller int ret; 4964428a7158SDouglas Fuller 49652544a020SIlya Dryomov if (req_len > PAGE_SIZE || (resp_page && *resp_len > PAGE_SIZE)) 49662544a020SIlya Dryomov return -E2BIG; 49672544a020SIlya Dryomov 4968428a7158SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4969428a7158SDouglas Fuller if (!req) 4970428a7158SDouglas Fuller return -ENOMEM; 4971428a7158SDouglas Fuller 4972428a7158SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 4973428a7158SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 4974428a7158SDouglas Fuller req->r_flags = flags; 4975428a7158SDouglas Fuller 497624639ce5SIlya Dryomov ret = osd_req_op_cls_init(req, 0, class, method); 4977fe943d50SChengguang Xu if (ret) 4978fe943d50SChengguang Xu goto out_put_req; 4979fe943d50SChengguang Xu 4980428a7158SDouglas Fuller if (req_page) 4981428a7158SDouglas Fuller osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len, 4982428a7158SDouglas Fuller 0, false, false); 4983428a7158SDouglas Fuller if (resp_page) 4984428a7158SDouglas Fuller osd_req_op_cls_response_data_pages(req, 0, &resp_page, 49852544a020SIlya Dryomov *resp_len, 0, false, false); 4986428a7158SDouglas Fuller 498726f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 498826f887e0SIlya Dryomov if (ret) 498926f887e0SIlya Dryomov goto out_put_req; 499026f887e0SIlya Dryomov 4991428a7158SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 4992428a7158SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 4993428a7158SDouglas Fuller if (ret >= 0) { 4994428a7158SDouglas Fuller ret = req->r_ops[0].rval; 4995428a7158SDouglas Fuller if (resp_page) 4996428a7158SDouglas Fuller *resp_len = req->r_ops[0].outdata_len; 4997428a7158SDouglas Fuller } 4998428a7158SDouglas Fuller 4999428a7158SDouglas Fuller out_put_req: 5000428a7158SDouglas Fuller ceph_osdc_put_request(req); 5001428a7158SDouglas Fuller return ret; 5002428a7158SDouglas Fuller } 5003428a7158SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_call); 5004428a7158SDouglas Fuller 5005428a7158SDouglas Fuller /* 50063d14c5d2SYehuda Sadeh * init, shutdown 50073d14c5d2SYehuda Sadeh */ 50083d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 50093d14c5d2SYehuda Sadeh { 50103d14c5d2SYehuda Sadeh int err; 50113d14c5d2SYehuda Sadeh 50123d14c5d2SYehuda Sadeh dout("init\n"); 50133d14c5d2SYehuda Sadeh osdc->client = client; 50145aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 50153d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 50163d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 50179dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 50185aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 50195aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 50205aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 5021264048afSIlya Dryomov osdc->last_linger_id = CEPH_LINGER_ID_START; 5022922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 50234609245eSIlya Dryomov osdc->map_checks = RB_ROOT; 50244609245eSIlya Dryomov osdc->linger_map_checks = RB_ROOT; 50253d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 50263d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 50273d14c5d2SYehuda Sadeh 50283d14c5d2SYehuda Sadeh err = -ENOMEM; 5029e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 5030e5253a7bSIlya Dryomov if (!osdc->osdmap) 5031e5253a7bSIlya Dryomov goto out; 5032e5253a7bSIlya Dryomov 50339e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 50349e767adbSIlya Dryomov ceph_osd_request_cache); 50353d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 5036e5253a7bSIlya Dryomov goto out_map; 50373d14c5d2SYehuda Sadeh 5038d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 5039711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 50403d14c5d2SYehuda Sadeh if (err < 0) 50413d14c5d2SYehuda Sadeh goto out_mempool; 5042d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 5043711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 50443d14c5d2SYehuda Sadeh if (err < 0) 50453d14c5d2SYehuda Sadeh goto out_msgpool; 5046a40c4f10SYehuda Sadeh 5047dbcae088SDan Carpenter err = -ENOMEM; 5048a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 5049dbcae088SDan Carpenter if (!osdc->notify_wq) 5050c172ec5cSIlya Dryomov goto out_msgpool_reply; 5051c172ec5cSIlya Dryomov 505288bc1922SIlya Dryomov osdc->completion_wq = create_singlethread_workqueue("ceph-completion"); 505388bc1922SIlya Dryomov if (!osdc->completion_wq) 505488bc1922SIlya Dryomov goto out_notify_wq; 505588bc1922SIlya Dryomov 5056fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 5057fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 5058b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 5059b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 5060b37ee1b9SIlya Dryomov 50613d14c5d2SYehuda Sadeh return 0; 50623d14c5d2SYehuda Sadeh 506388bc1922SIlya Dryomov out_notify_wq: 506488bc1922SIlya Dryomov destroy_workqueue(osdc->notify_wq); 5065c172ec5cSIlya Dryomov out_msgpool_reply: 5066c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 50673d14c5d2SYehuda Sadeh out_msgpool: 50683d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 50693d14c5d2SYehuda Sadeh out_mempool: 50703d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 5071e5253a7bSIlya Dryomov out_map: 5072e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 50733d14c5d2SYehuda Sadeh out: 50743d14c5d2SYehuda Sadeh return err; 50753d14c5d2SYehuda Sadeh } 50763d14c5d2SYehuda Sadeh 50773d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 50783d14c5d2SYehuda Sadeh { 507988bc1922SIlya Dryomov destroy_workqueue(osdc->completion_wq); 5080a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 50813d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 50823d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 508342a2c09fSIlya Dryomov 50845aea3dcdSIlya Dryomov down_write(&osdc->lock); 508542a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 508642a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 508742a2c09fSIlya Dryomov struct ceph_osd, o_node); 50885aea3dcdSIlya Dryomov close_osd(osd); 508942a2c09fSIlya Dryomov } 50905aea3dcdSIlya Dryomov up_write(&osdc->lock); 509102113a0fSElena Reshetova WARN_ON(refcount_read(&osdc->homeless_osd.o_ref) != 1); 50925aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 50935aea3dcdSIlya Dryomov 50945aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 5095922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 50964609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); 50974609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); 50985aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 50995aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 510042a2c09fSIlya Dryomov 51013d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 51023d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 51033d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 51043d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 51053d14c5d2SYehuda Sadeh } 51063d14c5d2SYehuda Sadeh 51073d14c5d2SYehuda Sadeh /* 51083d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 51093d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 51103d14c5d2SYehuda Sadeh */ 51113d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 51123d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 51133d14c5d2SYehuda Sadeh u64 off, u64 *plen, 51143d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 5115b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 51163d14c5d2SYehuda Sadeh { 51173d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 51183d14c5d2SYehuda Sadeh int rc = 0; 51193d14c5d2SYehuda Sadeh 51203d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 51213d14c5d2SYehuda Sadeh vino.snap, off, *plen); 5122715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 51233d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 5124acead002SAlex Elder NULL, truncate_seq, truncate_size, 5125153e5167SAlex Elder false); 51266816282dSSage Weil if (IS_ERR(req)) 51276816282dSSage Weil return PTR_ERR(req); 51283d14c5d2SYehuda Sadeh 51293d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 5130406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 5131a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 51323d14c5d2SYehuda Sadeh 5133e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 513443bfe5deSAlex Elder off, *plen, *plen, page_align); 51353d14c5d2SYehuda Sadeh 51363d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 51373d14c5d2SYehuda Sadeh if (!rc) 51383d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 51393d14c5d2SYehuda Sadeh 51403d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 51413d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 51423d14c5d2SYehuda Sadeh return rc; 51433d14c5d2SYehuda Sadeh } 51443d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 51453d14c5d2SYehuda Sadeh 51463d14c5d2SYehuda Sadeh /* 51473d14c5d2SYehuda Sadeh * do a synchronous write on N pages 51483d14c5d2SYehuda Sadeh */ 51493d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 51503d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 51513d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 51523d14c5d2SYehuda Sadeh u64 off, u64 len, 51533d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 5154fac02ddfSArnd Bergmann struct timespec64 *mtime, 515524808826SAlex Elder struct page **pages, int num_pages) 51563d14c5d2SYehuda Sadeh { 51573d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 51583d14c5d2SYehuda Sadeh int rc = 0; 5159b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 51603d14c5d2SYehuda Sadeh 5161715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 516254ea0046SIlya Dryomov CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE, 5163acead002SAlex Elder snapc, truncate_seq, truncate_size, 5164153e5167SAlex Elder true); 51656816282dSSage Weil if (IS_ERR(req)) 51666816282dSSage Weil return PTR_ERR(req); 51673d14c5d2SYehuda Sadeh 51683d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 5169406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 517043bfe5deSAlex Elder false, false); 517143bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 51723d14c5d2SYehuda Sadeh 5173bb873b53SIlya Dryomov req->r_mtime = *mtime; 517487f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 51753d14c5d2SYehuda Sadeh if (!rc) 51763d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 51773d14c5d2SYehuda Sadeh 51783d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 51793d14c5d2SYehuda Sadeh if (rc == 0) 51803d14c5d2SYehuda Sadeh rc = len; 51813d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 51823d14c5d2SYehuda Sadeh return rc; 51833d14c5d2SYehuda Sadeh } 51843d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 51853d14c5d2SYehuda Sadeh 518657a35dfbSChengguang Xu int __init ceph_osdc_setup(void) 51875522ae0bSAlex Elder { 51883f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 51893f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 51903f1af42aSIlya Dryomov 51915522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 51923f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 51933f1af42aSIlya Dryomov 0, 0, NULL); 51945522ae0bSAlex Elder 51955522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 51965522ae0bSAlex Elder } 51975522ae0bSAlex Elder 51985522ae0bSAlex Elder void ceph_osdc_cleanup(void) 51995522ae0bSAlex Elder { 52005522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 52015522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 52025522ae0bSAlex Elder ceph_osd_request_cache = NULL; 52035522ae0bSAlex Elder } 52045522ae0bSAlex Elder 52053d14c5d2SYehuda Sadeh /* 52063d14c5d2SYehuda Sadeh * handle incoming message 52073d14c5d2SYehuda Sadeh */ 52083d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 52093d14c5d2SYehuda Sadeh { 52103d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 52115aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 52123d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 52133d14c5d2SYehuda Sadeh 52143d14c5d2SYehuda Sadeh switch (type) { 52153d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 52163d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 52173d14c5d2SYehuda Sadeh break; 52183d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 52195aea3dcdSIlya Dryomov handle_reply(osd, msg); 52203d14c5d2SYehuda Sadeh break; 5221a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5222a02a946dSIlya Dryomov handle_backoff(osd, msg); 5223a02a946dSIlya Dryomov break; 5224a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 5225a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 5226a40c4f10SYehuda Sadeh break; 52273d14c5d2SYehuda Sadeh 52283d14c5d2SYehuda Sadeh default: 52293d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 52303d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 52313d14c5d2SYehuda Sadeh } 52325aea3dcdSIlya Dryomov 52333d14c5d2SYehuda Sadeh ceph_msg_put(msg); 52343d14c5d2SYehuda Sadeh } 52353d14c5d2SYehuda Sadeh 52363d14c5d2SYehuda Sadeh /* 5237d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 5238d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 5239d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 52403d14c5d2SYehuda Sadeh */ 52413d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 52423d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 52433d14c5d2SYehuda Sadeh int *skip) 52443d14c5d2SYehuda Sadeh { 52453d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 52463d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 52475aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 52483d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 52493f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 52503d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 52515aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 52523d14c5d2SYehuda Sadeh 52535aea3dcdSIlya Dryomov down_read(&osdc->lock); 52545aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 52555aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 52565aea3dcdSIlya Dryomov *skip = 1; 52575aea3dcdSIlya Dryomov goto out_unlock_osdc; 52585aea3dcdSIlya Dryomov } 52595aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 52605aea3dcdSIlya Dryomov 52615aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 52625aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 52633d14c5d2SYehuda Sadeh if (!req) { 5264cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 5265cd8140c6SIlya Dryomov osd->o_osd, tid); 5266d15f9d69SIlya Dryomov *skip = 1; 52675aea3dcdSIlya Dryomov goto out_unlock_session; 52683d14c5d2SYehuda Sadeh } 52693d14c5d2SYehuda Sadeh 52708921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 52713d14c5d2SYehuda Sadeh 5272f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 5273d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 5274d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 5275d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 52763f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 52773f0a4ac5SIlya Dryomov false); 52783d14c5d2SYehuda Sadeh if (!m) 52795aea3dcdSIlya Dryomov goto out_unlock_session; 52803d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 52813d14c5d2SYehuda Sadeh req->r_reply = m; 52823d14c5d2SYehuda Sadeh } 52833d14c5d2SYehuda Sadeh 5284d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 5285d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 5286d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 5287d15f9d69SIlya Dryomov req->r_reply->data_length); 52883d14c5d2SYehuda Sadeh m = NULL; 5289d15f9d69SIlya Dryomov *skip = 1; 52905aea3dcdSIlya Dryomov goto out_unlock_session; 52913d14c5d2SYehuda Sadeh } 5292d15f9d69SIlya Dryomov 5293d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 52943d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 52953d14c5d2SYehuda Sadeh 52965aea3dcdSIlya Dryomov out_unlock_session: 52975aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 52985aea3dcdSIlya Dryomov out_unlock_osdc: 52995aea3dcdSIlya Dryomov up_read(&osdc->lock); 53003d14c5d2SYehuda Sadeh return m; 53013d14c5d2SYehuda Sadeh } 53023d14c5d2SYehuda Sadeh 530319079203SIlya Dryomov /* 530419079203SIlya Dryomov * TODO: switch to a msg-owned pagelist 530519079203SIlya Dryomov */ 530619079203SIlya Dryomov static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) 530719079203SIlya Dryomov { 530819079203SIlya Dryomov struct ceph_msg *m; 530919079203SIlya Dryomov int type = le16_to_cpu(hdr->type); 531019079203SIlya Dryomov u32 front_len = le32_to_cpu(hdr->front_len); 531119079203SIlya Dryomov u32 data_len = le32_to_cpu(hdr->data_len); 531219079203SIlya Dryomov 531319079203SIlya Dryomov m = ceph_msg_new(type, front_len, GFP_NOIO, false); 531419079203SIlya Dryomov if (!m) 531519079203SIlya Dryomov return NULL; 531619079203SIlya Dryomov 531719079203SIlya Dryomov if (data_len) { 531819079203SIlya Dryomov struct page **pages; 531919079203SIlya Dryomov struct ceph_osd_data osd_data; 532019079203SIlya Dryomov 532119079203SIlya Dryomov pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), 532219079203SIlya Dryomov GFP_NOIO); 5323c22e853aSWei Yongjun if (IS_ERR(pages)) { 532419079203SIlya Dryomov ceph_msg_put(m); 532519079203SIlya Dryomov return NULL; 532619079203SIlya Dryomov } 532719079203SIlya Dryomov 532819079203SIlya Dryomov ceph_osd_data_pages_init(&osd_data, pages, data_len, 0, false, 532919079203SIlya Dryomov false); 533019079203SIlya Dryomov ceph_osdc_msg_data_add(m, &osd_data); 533119079203SIlya Dryomov } 533219079203SIlya Dryomov 533319079203SIlya Dryomov return m; 533419079203SIlya Dryomov } 533519079203SIlya Dryomov 53363d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 53373d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 53383d14c5d2SYehuda Sadeh int *skip) 53393d14c5d2SYehuda Sadeh { 53403d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 53413d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 53423d14c5d2SYehuda Sadeh 53431c20f2d2SAlex Elder *skip = 0; 53443d14c5d2SYehuda Sadeh switch (type) { 53453d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 5346a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5347a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 534819079203SIlya Dryomov return alloc_msg_with_page_vector(hdr); 53493d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 53503d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 53513d14c5d2SYehuda Sadeh default: 53525aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 53535aea3dcdSIlya Dryomov osd->o_osd, type); 53543d14c5d2SYehuda Sadeh *skip = 1; 53553d14c5d2SYehuda Sadeh return NULL; 53563d14c5d2SYehuda Sadeh } 53573d14c5d2SYehuda Sadeh } 53583d14c5d2SYehuda Sadeh 53593d14c5d2SYehuda Sadeh /* 53603d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 53613d14c5d2SYehuda Sadeh */ 53623d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 53633d14c5d2SYehuda Sadeh { 53643d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 53653d14c5d2SYehuda Sadeh if (get_osd(osd)) 53663d14c5d2SYehuda Sadeh return con; 53673d14c5d2SYehuda Sadeh return NULL; 53683d14c5d2SYehuda Sadeh } 53693d14c5d2SYehuda Sadeh 53703d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 53713d14c5d2SYehuda Sadeh { 53723d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 53733d14c5d2SYehuda Sadeh put_osd(osd); 53743d14c5d2SYehuda Sadeh } 53753d14c5d2SYehuda Sadeh 53763d14c5d2SYehuda Sadeh /* 53773d14c5d2SYehuda Sadeh * authentication 53783d14c5d2SYehuda Sadeh */ 5379a3530df3SAlex Elder /* 5380a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 5381a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 5382a3530df3SAlex Elder */ 5383a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 53848f43fb53SAlex Elder int *proto, int force_new) 53853d14c5d2SYehuda Sadeh { 53863d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 53873d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 53883d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 538974f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 53903d14c5d2SYehuda Sadeh 539174f1869fSAlex Elder if (force_new && auth->authorizer) { 53926c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 539374f1869fSAlex Elder auth->authorizer = NULL; 53943d14c5d2SYehuda Sadeh } 539527859f97SSage Weil if (!auth->authorizer) { 539627859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 5397a3530df3SAlex Elder auth); 53983d14c5d2SYehuda Sadeh if (ret) 5399a3530df3SAlex Elder return ERR_PTR(ret); 540027859f97SSage Weil } else { 540127859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 54020bed9b5cSSage Weil auth); 54030bed9b5cSSage Weil if (ret) 54040bed9b5cSSage Weil return ERR_PTR(ret); 54053d14c5d2SYehuda Sadeh } 54063d14c5d2SYehuda Sadeh *proto = ac->protocol; 540774f1869fSAlex Elder 5408a3530df3SAlex Elder return auth; 54093d14c5d2SYehuda Sadeh } 54103d14c5d2SYehuda Sadeh 54116daca13dSIlya Dryomov static int add_authorizer_challenge(struct ceph_connection *con, 54126daca13dSIlya Dryomov void *challenge_buf, int challenge_buf_len) 54136daca13dSIlya Dryomov { 54146daca13dSIlya Dryomov struct ceph_osd *o = con->private; 54156daca13dSIlya Dryomov struct ceph_osd_client *osdc = o->o_osdc; 54166daca13dSIlya Dryomov struct ceph_auth_client *ac = osdc->client->monc.auth; 54176daca13dSIlya Dryomov 54186daca13dSIlya Dryomov return ceph_auth_add_authorizer_challenge(ac, o->o_auth.authorizer, 54196daca13dSIlya Dryomov challenge_buf, challenge_buf_len); 54206daca13dSIlya Dryomov } 54213d14c5d2SYehuda Sadeh 54220dde5848SIlya Dryomov static int verify_authorizer_reply(struct ceph_connection *con) 54233d14c5d2SYehuda Sadeh { 54243d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 54253d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 54263d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 54273d14c5d2SYehuda Sadeh 54280dde5848SIlya Dryomov return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer); 54293d14c5d2SYehuda Sadeh } 54303d14c5d2SYehuda Sadeh 54313d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 54323d14c5d2SYehuda Sadeh { 54333d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 54343d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 54353d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 54363d14c5d2SYehuda Sadeh 543727859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 54383d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 54393d14c5d2SYehuda Sadeh } 54403d14c5d2SYehuda Sadeh 54418cb441c0SIlya Dryomov static void osd_reencode_message(struct ceph_msg *msg) 54428cb441c0SIlya Dryomov { 5443914902afSIlya Dryomov int type = le16_to_cpu(msg->hdr.type); 5444914902afSIlya Dryomov 5445914902afSIlya Dryomov if (type == CEPH_MSG_OSD_OP) 54468cb441c0SIlya Dryomov encode_request_finish(msg); 54478cb441c0SIlya Dryomov } 54488cb441c0SIlya Dryomov 544979dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 545033d07337SYan, Zheng { 545179dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 545233d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 545379dbd1baSIlya Dryomov 545433d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 545533d07337SYan, Zheng } 545633d07337SYan, Zheng 545779dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 545833d07337SYan, Zheng { 545979dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 546033d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 546179dbd1baSIlya Dryomov 546233d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 546333d07337SYan, Zheng } 546433d07337SYan, Zheng 54653d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 54663d14c5d2SYehuda Sadeh .get = get_osd_con, 54673d14c5d2SYehuda Sadeh .put = put_osd_con, 54683d14c5d2SYehuda Sadeh .dispatch = dispatch, 54693d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 54706daca13dSIlya Dryomov .add_authorizer_challenge = add_authorizer_challenge, 54713d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 54723d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 54733d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 54748cb441c0SIlya Dryomov .reencode_message = osd_reencode_message, 547579dbd1baSIlya Dryomov .sign_message = osd_sign_message, 547679dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 54775aea3dcdSIlya Dryomov .fault = osd_fault, 54783d14c5d2SYehuda Sadeh }; 5479