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 17449719778SAlex Elder static struct ceph_osd_data * 17549719778SAlex Elder osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) 17649719778SAlex Elder { 17749719778SAlex Elder BUG_ON(which >= osd_req->r_num_ops); 17849719778SAlex Elder 17949719778SAlex Elder return &osd_req->r_ops[which].raw_data_in; 18049719778SAlex Elder } 18149719778SAlex Elder 182a4ce40a9SAlex Elder struct ceph_osd_data * 183a4ce40a9SAlex Elder osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, 184406e2c9fSAlex Elder unsigned int which) 185a4ce40a9SAlex Elder { 186863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, extent, osd_data); 187a4ce40a9SAlex Elder } 188a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data); 189a4ce40a9SAlex Elder 19049719778SAlex Elder void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 19149719778SAlex Elder unsigned int which, struct page **pages, 19249719778SAlex Elder u64 length, u32 alignment, 19349719778SAlex Elder bool pages_from_pool, bool own_pages) 19449719778SAlex Elder { 19549719778SAlex Elder struct ceph_osd_data *osd_data; 19649719778SAlex Elder 19749719778SAlex Elder osd_data = osd_req_op_raw_data_in(osd_req, which); 19849719778SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 19949719778SAlex Elder pages_from_pool, own_pages); 20049719778SAlex Elder } 20149719778SAlex Elder EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 20249719778SAlex Elder 203a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 204406e2c9fSAlex Elder unsigned int which, struct page **pages, 205406e2c9fSAlex Elder u64 length, u32 alignment, 206a4ce40a9SAlex Elder bool pages_from_pool, bool own_pages) 207a4ce40a9SAlex Elder { 208a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 209a4ce40a9SAlex Elder 210863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 211a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 212a4ce40a9SAlex Elder pages_from_pool, own_pages); 213a4ce40a9SAlex Elder } 214a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 215a4ce40a9SAlex Elder 216a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 217406e2c9fSAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 218a4ce40a9SAlex Elder { 219a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 220a4ce40a9SAlex Elder 221863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 222a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 223a4ce40a9SAlex Elder } 224a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 225a4ce40a9SAlex Elder 226a4ce40a9SAlex Elder #ifdef CONFIG_BLOCK 227a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 2285359a17dSIlya Dryomov unsigned int which, 2295359a17dSIlya Dryomov struct ceph_bio_iter *bio_pos, 2305359a17dSIlya Dryomov u32 bio_length) 231a4ce40a9SAlex Elder { 232a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 233863c7eb5SAlex Elder 234863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2355359a17dSIlya Dryomov ceph_osd_data_bio_init(osd_data, bio_pos, bio_length); 236a4ce40a9SAlex Elder } 237a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 238a4ce40a9SAlex Elder #endif /* CONFIG_BLOCK */ 239a4ce40a9SAlex Elder 2400010f705SIlya Dryomov void osd_req_op_extent_osd_data_bvecs(struct ceph_osd_request *osd_req, 2410010f705SIlya Dryomov unsigned int which, 2420010f705SIlya Dryomov struct bio_vec *bvecs, u32 num_bvecs, 2430010f705SIlya Dryomov u32 bytes) 2440010f705SIlya Dryomov { 2450010f705SIlya Dryomov struct ceph_osd_data *osd_data; 2460010f705SIlya Dryomov struct ceph_bvec_iter it = { 2470010f705SIlya Dryomov .bvecs = bvecs, 2480010f705SIlya Dryomov .iter = { .bi_size = bytes }, 2490010f705SIlya Dryomov }; 2500010f705SIlya Dryomov 2510010f705SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2520010f705SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, &it, num_bvecs); 2530010f705SIlya Dryomov } 2540010f705SIlya Dryomov EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvecs); 2550010f705SIlya Dryomov 256b9e281c2SIlya Dryomov void osd_req_op_extent_osd_data_bvec_pos(struct ceph_osd_request *osd_req, 257b9e281c2SIlya Dryomov unsigned int which, 258b9e281c2SIlya Dryomov struct ceph_bvec_iter *bvec_pos) 259b9e281c2SIlya Dryomov { 260b9e281c2SIlya Dryomov struct ceph_osd_data *osd_data; 261b9e281c2SIlya Dryomov 262b9e281c2SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2630010f705SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, bvec_pos, 0); 264b9e281c2SIlya Dryomov } 265b9e281c2SIlya Dryomov EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvec_pos); 266b9e281c2SIlya Dryomov 267a4ce40a9SAlex Elder static void osd_req_op_cls_request_info_pagelist( 268a4ce40a9SAlex Elder struct ceph_osd_request *osd_req, 269a4ce40a9SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 270a4ce40a9SAlex Elder { 271a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 272a4ce40a9SAlex Elder 273863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_info); 274a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 275a4ce40a9SAlex Elder } 276a4ce40a9SAlex Elder 27704017e29SAlex Elder void osd_req_op_cls_request_data_pagelist( 27804017e29SAlex Elder struct ceph_osd_request *osd_req, 27904017e29SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 28004017e29SAlex Elder { 28104017e29SAlex Elder struct ceph_osd_data *osd_data; 28204017e29SAlex Elder 283863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 28404017e29SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 285bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += pagelist->length; 286bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += pagelist->length; 28704017e29SAlex Elder } 28804017e29SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 28904017e29SAlex Elder 2906c57b554SAlex Elder void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 2916c57b554SAlex Elder unsigned int which, struct page **pages, u64 length, 2926c57b554SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 2936c57b554SAlex Elder { 2946c57b554SAlex Elder struct ceph_osd_data *osd_data; 2956c57b554SAlex Elder 2966c57b554SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 2976c57b554SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 2986c57b554SAlex Elder pages_from_pool, own_pages); 299bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += length; 300bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += length; 3016c57b554SAlex Elder } 3026c57b554SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 3036c57b554SAlex Elder 304b9e281c2SIlya Dryomov void osd_req_op_cls_request_data_bvecs(struct ceph_osd_request *osd_req, 305b9e281c2SIlya Dryomov unsigned int which, 3060010f705SIlya Dryomov struct bio_vec *bvecs, u32 num_bvecs, 3070010f705SIlya Dryomov u32 bytes) 308b9e281c2SIlya Dryomov { 309b9e281c2SIlya Dryomov struct ceph_osd_data *osd_data; 310b9e281c2SIlya Dryomov struct ceph_bvec_iter it = { 311b9e281c2SIlya Dryomov .bvecs = bvecs, 312b9e281c2SIlya Dryomov .iter = { .bi_size = bytes }, 313b9e281c2SIlya Dryomov }; 314b9e281c2SIlya Dryomov 315b9e281c2SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, cls, request_data); 3160010f705SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, &it, num_bvecs); 317b9e281c2SIlya Dryomov osd_req->r_ops[which].cls.indata_len += bytes; 318b9e281c2SIlya Dryomov osd_req->r_ops[which].indata_len += bytes; 319b9e281c2SIlya Dryomov } 320b9e281c2SIlya Dryomov EXPORT_SYMBOL(osd_req_op_cls_request_data_bvecs); 321b9e281c2SIlya Dryomov 322a4ce40a9SAlex Elder void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 323a4ce40a9SAlex Elder unsigned int which, struct page **pages, u64 length, 324a4ce40a9SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 325a4ce40a9SAlex Elder { 326a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 327a4ce40a9SAlex Elder 328863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, response_data); 329a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 330a4ce40a9SAlex Elder pages_from_pool, own_pages); 331a4ce40a9SAlex Elder } 332a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 333a4ce40a9SAlex Elder 33423c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 33523c08a9cSAlex Elder { 33623c08a9cSAlex Elder switch (osd_data->type) { 33723c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 33823c08a9cSAlex Elder return 0; 33923c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 34023c08a9cSAlex Elder return osd_data->length; 34123c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 34223c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 34323c08a9cSAlex Elder #ifdef CONFIG_BLOCK 34423c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 34523c08a9cSAlex Elder return (u64)osd_data->bio_length; 34623c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 347b9e281c2SIlya Dryomov case CEPH_OSD_DATA_TYPE_BVECS: 348b9e281c2SIlya Dryomov return osd_data->bvec_pos.iter.bi_size; 34923c08a9cSAlex Elder default: 35023c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 35123c08a9cSAlex Elder return 0; 35223c08a9cSAlex Elder } 35323c08a9cSAlex Elder } 35423c08a9cSAlex Elder 355c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 356c54d47bfSAlex Elder { 3575476492fSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 358c54d47bfSAlex Elder int num_pages; 359c54d47bfSAlex Elder 360c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 361c54d47bfSAlex Elder (u64)osd_data->length); 362c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 36389486833SIlya Dryomov } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 36489486833SIlya Dryomov ceph_pagelist_release(osd_data->pagelist); 365c54d47bfSAlex Elder } 3665476492fSAlex Elder ceph_osd_data_init(osd_data); 3675476492fSAlex Elder } 3685476492fSAlex Elder 3695476492fSAlex Elder static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 3705476492fSAlex Elder unsigned int which) 3715476492fSAlex Elder { 3725476492fSAlex Elder struct ceph_osd_req_op *op; 3735476492fSAlex Elder 3745476492fSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 3755476492fSAlex Elder op = &osd_req->r_ops[which]; 3765476492fSAlex Elder 3775476492fSAlex Elder switch (op->op) { 3785476492fSAlex Elder case CEPH_OSD_OP_READ: 3795476492fSAlex Elder case CEPH_OSD_OP_WRITE: 380e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 3815476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 3825476492fSAlex Elder break; 3835476492fSAlex Elder case CEPH_OSD_OP_CALL: 3845476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 38504017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 3865476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 3875476492fSAlex Elder break; 388d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 389d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 390d74b50beSYan, Zheng ceph_osd_data_release(&op->xattr.osd_data); 391d74b50beSYan, Zheng break; 39266ba609fSYan, Zheng case CEPH_OSD_OP_STAT: 39366ba609fSYan, Zheng ceph_osd_data_release(&op->raw_data_in); 39466ba609fSYan, Zheng break; 395922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 396922dab61SIlya Dryomov ceph_osd_data_release(&op->notify_ack.request_data); 397922dab61SIlya Dryomov break; 39819079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 39919079203SIlya Dryomov ceph_osd_data_release(&op->notify.request_data); 40019079203SIlya Dryomov ceph_osd_data_release(&op->notify.response_data); 40119079203SIlya Dryomov break; 402a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 403a4ed38d7SDouglas Fuller ceph_osd_data_release(&op->list_watchers.response_data); 404a4ed38d7SDouglas Fuller break; 40578beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 40623ddf9beSLuis Henriques ceph_osd_data_release(&op->copy_from.osd_data); 40723ddf9beSLuis Henriques break; 4085476492fSAlex Elder default: 4095476492fSAlex Elder break; 4105476492fSAlex Elder } 411c54d47bfSAlex Elder } 412c54d47bfSAlex Elder 4133d14c5d2SYehuda Sadeh /* 41463244fa1SIlya Dryomov * Assumes @t is zero-initialized. 41563244fa1SIlya Dryomov */ 41663244fa1SIlya Dryomov static void target_init(struct ceph_osd_request_target *t) 41763244fa1SIlya Dryomov { 41863244fa1SIlya Dryomov ceph_oid_init(&t->base_oid); 41963244fa1SIlya Dryomov ceph_oloc_init(&t->base_oloc); 42063244fa1SIlya Dryomov ceph_oid_init(&t->target_oid); 42163244fa1SIlya Dryomov ceph_oloc_init(&t->target_oloc); 42263244fa1SIlya Dryomov 42363244fa1SIlya Dryomov ceph_osds_init(&t->acting); 42463244fa1SIlya Dryomov ceph_osds_init(&t->up); 42563244fa1SIlya Dryomov t->size = -1; 42663244fa1SIlya Dryomov t->min_size = -1; 42763244fa1SIlya Dryomov 42863244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 42963244fa1SIlya Dryomov } 43063244fa1SIlya Dryomov 431922dab61SIlya Dryomov static void target_copy(struct ceph_osd_request_target *dest, 432922dab61SIlya Dryomov const struct ceph_osd_request_target *src) 433922dab61SIlya Dryomov { 434922dab61SIlya Dryomov ceph_oid_copy(&dest->base_oid, &src->base_oid); 435922dab61SIlya Dryomov ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); 436922dab61SIlya Dryomov ceph_oid_copy(&dest->target_oid, &src->target_oid); 437922dab61SIlya Dryomov ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); 438922dab61SIlya Dryomov 439922dab61SIlya Dryomov dest->pgid = src->pgid; /* struct */ 440dc98ff72SIlya Dryomov dest->spgid = src->spgid; /* struct */ 441922dab61SIlya Dryomov dest->pg_num = src->pg_num; 442922dab61SIlya Dryomov dest->pg_num_mask = src->pg_num_mask; 443922dab61SIlya Dryomov ceph_osds_copy(&dest->acting, &src->acting); 444922dab61SIlya Dryomov ceph_osds_copy(&dest->up, &src->up); 445922dab61SIlya Dryomov dest->size = src->size; 446922dab61SIlya Dryomov dest->min_size = src->min_size; 447922dab61SIlya Dryomov dest->sort_bitwise = src->sort_bitwise; 448922dab61SIlya Dryomov 449922dab61SIlya Dryomov dest->flags = src->flags; 450922dab61SIlya Dryomov dest->paused = src->paused; 451922dab61SIlya Dryomov 45204c7d789SIlya Dryomov dest->epoch = src->epoch; 453dc93e0e2SIlya Dryomov dest->last_force_resend = src->last_force_resend; 454dc93e0e2SIlya Dryomov 455922dab61SIlya Dryomov dest->osd = src->osd; 456922dab61SIlya Dryomov } 457922dab61SIlya Dryomov 45863244fa1SIlya Dryomov static void target_destroy(struct ceph_osd_request_target *t) 45963244fa1SIlya Dryomov { 46063244fa1SIlya Dryomov ceph_oid_destroy(&t->base_oid); 46130c156d9SYan, Zheng ceph_oloc_destroy(&t->base_oloc); 46263244fa1SIlya Dryomov ceph_oid_destroy(&t->target_oid); 46330c156d9SYan, Zheng ceph_oloc_destroy(&t->target_oloc); 46463244fa1SIlya Dryomov } 46563244fa1SIlya Dryomov 46663244fa1SIlya Dryomov /* 4673d14c5d2SYehuda Sadeh * requests 4683d14c5d2SYehuda Sadeh */ 4693540bfdbSIlya Dryomov static void request_release_checks(struct ceph_osd_request *req) 4703540bfdbSIlya Dryomov { 4713540bfdbSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 4724609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node)); 47394e85771SIlya Dryomov WARN_ON(!list_empty(&req->r_private_item)); 4743540bfdbSIlya Dryomov WARN_ON(req->r_osd); 4753540bfdbSIlya Dryomov } 4763540bfdbSIlya Dryomov 4779e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 4783d14c5d2SYehuda Sadeh { 4799e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 4809e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 4815476492fSAlex Elder unsigned int which; 4823d14c5d2SYehuda Sadeh 4839e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 4849e94af20SIlya Dryomov req->r_request, req->r_reply); 4853540bfdbSIlya Dryomov request_release_checks(req); 4869e94af20SIlya Dryomov 4873d14c5d2SYehuda Sadeh if (req->r_request) 4883d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 4895aea3dcdSIlya Dryomov if (req->r_reply) 490ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 4910fff87ecSAlex Elder 4925476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 4935476492fSAlex Elder osd_req_op_data_release(req, which); 4940fff87ecSAlex Elder 495a66dd383SIlya Dryomov target_destroy(&req->r_t); 4963d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 497d30291b9SIlya Dryomov 4983d14c5d2SYehuda Sadeh if (req->r_mempool) 4993d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 5003f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 5015522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 5023f1af42aSIlya Dryomov else 5033f1af42aSIlya Dryomov kfree(req); 5043d14c5d2SYehuda Sadeh } 5059e94af20SIlya Dryomov 5069e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 5079e94af20SIlya Dryomov { 5089e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 5092c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 5109e94af20SIlya Dryomov kref_get(&req->r_kref); 5119e94af20SIlya Dryomov } 5129e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 5139e94af20SIlya Dryomov 5149e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 5159e94af20SIlya Dryomov { 5163ed97d63SIlya Dryomov if (req) { 5179e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 5182c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 5199e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 5209e94af20SIlya Dryomov } 5213ed97d63SIlya Dryomov } 5229e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 5233d14c5d2SYehuda Sadeh 5243540bfdbSIlya Dryomov static void request_init(struct ceph_osd_request *req) 5253540bfdbSIlya Dryomov { 5263540bfdbSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 5273540bfdbSIlya Dryomov memset(req, 0, sizeof(*req)); 5283540bfdbSIlya Dryomov 5293540bfdbSIlya Dryomov kref_init(&req->r_kref); 5303540bfdbSIlya Dryomov init_completion(&req->r_completion); 5313540bfdbSIlya Dryomov RB_CLEAR_NODE(&req->r_node); 5324609245eSIlya Dryomov RB_CLEAR_NODE(&req->r_mc_node); 53394e85771SIlya Dryomov INIT_LIST_HEAD(&req->r_private_item); 5343540bfdbSIlya Dryomov 5353540bfdbSIlya Dryomov target_init(&req->r_t); 5363540bfdbSIlya Dryomov } 5373540bfdbSIlya Dryomov 538922dab61SIlya Dryomov /* 539922dab61SIlya Dryomov * This is ugly, but it allows us to reuse linger registration and ping 540922dab61SIlya Dryomov * requests, keeping the structure of the code around send_linger{_ping}() 541922dab61SIlya Dryomov * reasonable. Setting up a min_nr=2 mempool for each linger request 542922dab61SIlya Dryomov * and dealing with copying ops (this blasts req only, watch op remains 543922dab61SIlya Dryomov * intact) isn't any better. 544922dab61SIlya Dryomov */ 545922dab61SIlya Dryomov static void request_reinit(struct ceph_osd_request *req) 546922dab61SIlya Dryomov { 547922dab61SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 548922dab61SIlya Dryomov bool mempool = req->r_mempool; 549922dab61SIlya Dryomov unsigned int num_ops = req->r_num_ops; 550922dab61SIlya Dryomov u64 snapid = req->r_snapid; 551922dab61SIlya Dryomov struct ceph_snap_context *snapc = req->r_snapc; 552922dab61SIlya Dryomov bool linger = req->r_linger; 553922dab61SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 554922dab61SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 555922dab61SIlya Dryomov 556922dab61SIlya Dryomov dout("%s req %p\n", __func__, req); 5572c935bc5SPeter Zijlstra WARN_ON(kref_read(&req->r_kref) != 1); 558922dab61SIlya Dryomov request_release_checks(req); 559922dab61SIlya Dryomov 5602c935bc5SPeter Zijlstra WARN_ON(kref_read(&request_msg->kref) != 1); 5612c935bc5SPeter Zijlstra WARN_ON(kref_read(&reply_msg->kref) != 1); 562922dab61SIlya Dryomov target_destroy(&req->r_t); 563922dab61SIlya Dryomov 564922dab61SIlya Dryomov request_init(req); 565922dab61SIlya Dryomov req->r_osdc = osdc; 566922dab61SIlya Dryomov req->r_mempool = mempool; 567922dab61SIlya Dryomov req->r_num_ops = num_ops; 568922dab61SIlya Dryomov req->r_snapid = snapid; 569922dab61SIlya Dryomov req->r_snapc = snapc; 570922dab61SIlya Dryomov req->r_linger = linger; 571922dab61SIlya Dryomov req->r_request = request_msg; 572922dab61SIlya Dryomov req->r_reply = reply_msg; 573922dab61SIlya Dryomov } 574922dab61SIlya Dryomov 5753d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 5763d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5771b83bef2SSage Weil unsigned int num_ops, 5783d14c5d2SYehuda Sadeh bool use_mempool, 57954a54007SAlex Elder gfp_t gfp_flags) 5803d14c5d2SYehuda Sadeh { 5813d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5823d14c5d2SYehuda Sadeh 5833d14c5d2SYehuda Sadeh if (use_mempool) { 5843f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 5853d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 5863f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 5873f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 5883d14c5d2SYehuda Sadeh } else { 5893f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 590acafe7e3SKees Cook req = kmalloc(struct_size(req, r_ops, num_ops), gfp_flags); 5913d14c5d2SYehuda Sadeh } 5923f1af42aSIlya Dryomov if (unlikely(!req)) 5933d14c5d2SYehuda Sadeh return NULL; 5943d14c5d2SYehuda Sadeh 5953540bfdbSIlya Dryomov request_init(req); 5963d14c5d2SYehuda Sadeh req->r_osdc = osdc; 5973d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 59879528734SAlex Elder req->r_num_ops = num_ops; 59984127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 60084127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 6013d14c5d2SYehuda Sadeh 60213d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 60313d1ad16SIlya Dryomov return req; 6043f1af42aSIlya Dryomov } 60513d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 6063f1af42aSIlya Dryomov 6072e59ffd1SIlya Dryomov static int ceph_oloc_encoding_size(const struct ceph_object_locator *oloc) 60830c156d9SYan, Zheng { 60930c156d9SYan, Zheng return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0); 61030c156d9SYan, Zheng } 61130c156d9SYan, Zheng 6120d9c1ab3SIlya Dryomov static int __ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp, 6130d9c1ab3SIlya Dryomov int num_request_data_items, 6140d9c1ab3SIlya Dryomov int num_reply_data_items) 61513d1ad16SIlya Dryomov { 61613d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 61713d1ad16SIlya Dryomov struct ceph_msg *msg; 61813d1ad16SIlya Dryomov int msg_size; 6193d14c5d2SYehuda Sadeh 6200d9c1ab3SIlya Dryomov WARN_ON(req->r_request || req->r_reply); 621d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 62230c156d9SYan, Zheng WARN_ON(ceph_oloc_empty(&req->r_base_oloc)); 623d30291b9SIlya Dryomov 62413d1ad16SIlya Dryomov /* create request message */ 6258cb441c0SIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 6268cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 6278cb441c0SIlya Dryomov msg_size += 4 + 4 + 4; /* hash, osdmap_epoch, flags */ 6288cb441c0SIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 6298cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid); /* reqid */ 6308cb441c0SIlya Dryomov msg_size += sizeof(struct ceph_blkin_trace_info); /* trace */ 6318cb441c0SIlya Dryomov msg_size += 4 + sizeof(struct ceph_timespec); /* client_inc, mtime */ 63230c156d9SYan, Zheng msg_size += CEPH_ENCODING_START_BLK_LEN + 63330c156d9SYan, Zheng ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */ 63413d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 63513d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 636ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 637ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 63813d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 6398cb441c0SIlya Dryomov msg_size += 4 + 8; /* retry_attempt, features */ 640ae458f5aSIlya Dryomov 64113d1ad16SIlya Dryomov if (req->r_mempool) 6420d9c1ab3SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op, msg_size, 6430d9c1ab3SIlya Dryomov num_request_data_items); 6443d14c5d2SYehuda Sadeh else 6450d9c1ab3SIlya Dryomov msg = ceph_msg_new2(CEPH_MSG_OSD_OP, msg_size, 6460d9c1ab3SIlya Dryomov num_request_data_items, 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) 6590d9c1ab3SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, msg_size, 6600d9c1ab3SIlya Dryomov num_reply_data_items); 66113d1ad16SIlya Dryomov else 6620d9c1ab3SIlya Dryomov msg = ceph_msg_new2(CEPH_MSG_OSD_OPREPLY, msg_size, 6630d9c1ab3SIlya Dryomov num_reply_data_items, gfp, true); 66413d1ad16SIlya Dryomov if (!msg) 66513d1ad16SIlya Dryomov return -ENOMEM; 66613d1ad16SIlya Dryomov 66713d1ad16SIlya Dryomov req->r_reply = msg; 66813d1ad16SIlya Dryomov 66913d1ad16SIlya Dryomov return 0; 67013d1ad16SIlya Dryomov } 6713d14c5d2SYehuda Sadeh 672a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 673a8dd0a37SAlex Elder { 674a8dd0a37SAlex Elder switch (opcode) { 67570b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 67670b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 67770b5bfa3SIlya Dryomov #undef GENERATE_CASE 678a8dd0a37SAlex Elder default: 679a8dd0a37SAlex Elder return false; 680a8dd0a37SAlex Elder } 681a8dd0a37SAlex Elder } 682a8dd0a37SAlex Elder 6830d9c1ab3SIlya Dryomov static void get_num_data_items(struct ceph_osd_request *req, 6840d9c1ab3SIlya Dryomov int *num_request_data_items, 6850d9c1ab3SIlya Dryomov int *num_reply_data_items) 6860d9c1ab3SIlya Dryomov { 6870d9c1ab3SIlya Dryomov struct ceph_osd_req_op *op; 6880d9c1ab3SIlya Dryomov 6890d9c1ab3SIlya Dryomov *num_request_data_items = 0; 6900d9c1ab3SIlya Dryomov *num_reply_data_items = 0; 6910d9c1ab3SIlya Dryomov 6920d9c1ab3SIlya Dryomov for (op = req->r_ops; op != &req->r_ops[req->r_num_ops]; op++) { 6930d9c1ab3SIlya Dryomov switch (op->op) { 6940d9c1ab3SIlya Dryomov /* request */ 6950d9c1ab3SIlya Dryomov case CEPH_OSD_OP_WRITE: 6960d9c1ab3SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 6970d9c1ab3SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 6980d9c1ab3SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 6990d9c1ab3SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 70078beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 7010d9c1ab3SIlya Dryomov *num_request_data_items += 1; 7020d9c1ab3SIlya Dryomov break; 7030d9c1ab3SIlya Dryomov 7040d9c1ab3SIlya Dryomov /* reply */ 7050d9c1ab3SIlya Dryomov case CEPH_OSD_OP_STAT: 7060d9c1ab3SIlya Dryomov case CEPH_OSD_OP_READ: 7070d9c1ab3SIlya Dryomov case CEPH_OSD_OP_LIST_WATCHERS: 7080d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 7090d9c1ab3SIlya Dryomov break; 7100d9c1ab3SIlya Dryomov 7110d9c1ab3SIlya Dryomov /* both */ 7120d9c1ab3SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 7130d9c1ab3SIlya Dryomov *num_request_data_items += 1; 7140d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 7150d9c1ab3SIlya Dryomov break; 7160d9c1ab3SIlya Dryomov case CEPH_OSD_OP_CALL: 7170d9c1ab3SIlya Dryomov *num_request_data_items += 2; 7180d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 7190d9c1ab3SIlya Dryomov break; 7200d9c1ab3SIlya Dryomov 7210d9c1ab3SIlya Dryomov default: 7220d9c1ab3SIlya Dryomov WARN_ON(!osd_req_opcode_valid(op->op)); 7230d9c1ab3SIlya Dryomov break; 7240d9c1ab3SIlya Dryomov } 7250d9c1ab3SIlya Dryomov } 7260d9c1ab3SIlya Dryomov } 7270d9c1ab3SIlya Dryomov 7280d9c1ab3SIlya Dryomov /* 7290d9c1ab3SIlya Dryomov * oid, oloc and OSD op opcode(s) must be filled in before this function 7300d9c1ab3SIlya Dryomov * is called. 7310d9c1ab3SIlya Dryomov */ 7320d9c1ab3SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 7330d9c1ab3SIlya Dryomov { 7340d9c1ab3SIlya Dryomov int num_request_data_items, num_reply_data_items; 7350d9c1ab3SIlya Dryomov 7360d9c1ab3SIlya Dryomov get_num_data_items(req, &num_request_data_items, &num_reply_data_items); 7370d9c1ab3SIlya Dryomov return __ceph_osdc_alloc_messages(req, gfp, num_request_data_items, 7380d9c1ab3SIlya Dryomov num_reply_data_items); 7390d9c1ab3SIlya Dryomov } 7400d9c1ab3SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 7410d9c1ab3SIlya Dryomov 74233803f33SAlex Elder /* 74333803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 74433803f33SAlex Elder * other information associated with them. It also serves as a 74533803f33SAlex Elder * common init routine for all the other init functions, below. 74633803f33SAlex Elder */ 747c99d2d4aSAlex Elder static struct ceph_osd_req_op * 74849719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 749144cba14SYan, Zheng u16 opcode, u32 flags) 75033803f33SAlex Elder { 751c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 752c99d2d4aSAlex Elder 753c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 75433803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 75533803f33SAlex Elder 756c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 75733803f33SAlex Elder memset(op, 0, sizeof (*op)); 75833803f33SAlex Elder op->op = opcode; 759144cba14SYan, Zheng op->flags = flags; 760c99d2d4aSAlex Elder 761c99d2d4aSAlex Elder return op; 76233803f33SAlex Elder } 76333803f33SAlex Elder 76449719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 765144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 76649719778SAlex Elder { 767144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 76849719778SAlex Elder } 76949719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 77049719778SAlex Elder 771c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 772c99d2d4aSAlex Elder unsigned int which, u16 opcode, 77333803f33SAlex Elder u64 offset, u64 length, 77433803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 77533803f33SAlex Elder { 776144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 777144cba14SYan, Zheng opcode, 0); 77833803f33SAlex Elder size_t payload_len = 0; 77933803f33SAlex Elder 780ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 781e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 782e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 78333803f33SAlex Elder 78433803f33SAlex Elder op->extent.offset = offset; 78533803f33SAlex Elder op->extent.length = length; 78633803f33SAlex Elder op->extent.truncate_size = truncate_size; 78733803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 788e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 78933803f33SAlex Elder payload_len += length; 79033803f33SAlex Elder 791de2aa102SIlya Dryomov op->indata_len = payload_len; 79233803f33SAlex Elder } 79333803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 79433803f33SAlex Elder 795c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 796c99d2d4aSAlex Elder unsigned int which, u64 length) 797e5975c7cSAlex Elder { 798c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 799c99d2d4aSAlex Elder u64 previous; 800c99d2d4aSAlex Elder 801c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 802c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 803c99d2d4aSAlex Elder previous = op->extent.length; 804e5975c7cSAlex Elder 805e5975c7cSAlex Elder if (length == previous) 806e5975c7cSAlex Elder return; /* Nothing to do */ 807e5975c7cSAlex Elder BUG_ON(length > previous); 808e5975c7cSAlex Elder 809e5975c7cSAlex Elder op->extent.length = length; 810d641df81SYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 811de2aa102SIlya Dryomov op->indata_len -= previous - length; 812e5975c7cSAlex Elder } 813e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 814e5975c7cSAlex Elder 8152c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 8162c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 8172c63f49aSYan, Zheng { 8182c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 8192c63f49aSYan, Zheng 8202c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 8212c63f49aSYan, Zheng 8222c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 8232c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 8242c63f49aSYan, Zheng /* dup previous one */ 8252c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 8262c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 8272c63f49aSYan, Zheng op->extent = prev_op->extent; 8282c63f49aSYan, Zheng /* adjust offset */ 8292c63f49aSYan, Zheng op->extent.offset += offset_inc; 8302c63f49aSYan, Zheng op->extent.length -= offset_inc; 8312c63f49aSYan, Zheng 8322c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 8332c63f49aSYan, Zheng op->indata_len -= offset_inc; 8342c63f49aSYan, Zheng } 8352c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 8362c63f49aSYan, Zheng 837fe943d50SChengguang Xu int osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 83824639ce5SIlya Dryomov const char *class, const char *method) 83933803f33SAlex Elder { 84024639ce5SIlya Dryomov struct ceph_osd_req_op *op; 8415f562df5SAlex Elder struct ceph_pagelist *pagelist; 84233803f33SAlex Elder size_t payload_len = 0; 84333803f33SAlex Elder size_t size; 8444766815bSDavid Disseldorp int ret; 84533803f33SAlex Elder 84624639ce5SIlya Dryomov op = _osd_req_op_init(osd_req, which, CEPH_OSD_OP_CALL, 0); 84733803f33SAlex Elder 84833165d47SIlya Dryomov pagelist = ceph_pagelist_alloc(GFP_NOFS); 849fe943d50SChengguang Xu if (!pagelist) 850fe943d50SChengguang Xu return -ENOMEM; 851fe943d50SChengguang Xu 85233803f33SAlex Elder op->cls.class_name = class; 85333803f33SAlex Elder size = strlen(class); 85433803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 85533803f33SAlex Elder op->cls.class_len = size; 8564766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, class, size); 8574766815bSDavid Disseldorp if (ret) 8584766815bSDavid Disseldorp goto err_pagelist_free; 85933803f33SAlex Elder payload_len += size; 86033803f33SAlex Elder 86133803f33SAlex Elder op->cls.method_name = method; 86233803f33SAlex Elder size = strlen(method); 86333803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 86433803f33SAlex Elder op->cls.method_len = size; 8654766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, method, size); 8664766815bSDavid Disseldorp if (ret) 8674766815bSDavid Disseldorp goto err_pagelist_free; 86833803f33SAlex Elder payload_len += size; 86933803f33SAlex Elder 870a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 871de2aa102SIlya Dryomov op->indata_len = payload_len; 872fe943d50SChengguang Xu return 0; 8734766815bSDavid Disseldorp 8744766815bSDavid Disseldorp err_pagelist_free: 8754766815bSDavid Disseldorp ceph_pagelist_release(pagelist); 8764766815bSDavid Disseldorp return ret; 87733803f33SAlex Elder } 87833803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 8798c042b0dSAlex Elder 880d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 881d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 882d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 883d74b50beSYan, Zheng { 884144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 885144cba14SYan, Zheng opcode, 0); 886d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 887d74b50beSYan, Zheng size_t payload_len; 8884766815bSDavid Disseldorp int ret; 889d74b50beSYan, Zheng 890d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 891d74b50beSYan, Zheng 89233165d47SIlya Dryomov pagelist = ceph_pagelist_alloc(GFP_NOFS); 893d74b50beSYan, Zheng if (!pagelist) 894d74b50beSYan, Zheng return -ENOMEM; 895d74b50beSYan, Zheng 896d74b50beSYan, Zheng payload_len = strlen(name); 897d74b50beSYan, Zheng op->xattr.name_len = payload_len; 8984766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, name, payload_len); 8994766815bSDavid Disseldorp if (ret) 9004766815bSDavid Disseldorp goto err_pagelist_free; 901d74b50beSYan, Zheng 902d74b50beSYan, Zheng op->xattr.value_len = size; 9034766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, value, size); 9044766815bSDavid Disseldorp if (ret) 9054766815bSDavid Disseldorp goto err_pagelist_free; 906d74b50beSYan, Zheng payload_len += size; 907d74b50beSYan, Zheng 908d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 909d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 910d74b50beSYan, Zheng 911d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 912de2aa102SIlya Dryomov op->indata_len = payload_len; 913d74b50beSYan, Zheng return 0; 9144766815bSDavid Disseldorp 9154766815bSDavid Disseldorp err_pagelist_free: 9164766815bSDavid Disseldorp ceph_pagelist_release(pagelist); 9174766815bSDavid Disseldorp return ret; 918d74b50beSYan, Zheng } 919d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 920d74b50beSYan, Zheng 921922dab61SIlya Dryomov /* 922922dab61SIlya Dryomov * @watch_opcode: CEPH_OSD_WATCH_OP_* 923922dab61SIlya Dryomov */ 924922dab61SIlya Dryomov static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, 925922dab61SIlya Dryomov u64 cookie, u8 watch_opcode) 92633803f33SAlex Elder { 927922dab61SIlya Dryomov struct ceph_osd_req_op *op; 92833803f33SAlex Elder 929922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); 93033803f33SAlex Elder op->watch.cookie = cookie; 931922dab61SIlya Dryomov op->watch.op = watch_opcode; 932922dab61SIlya Dryomov op->watch.gen = 0; 93333803f33SAlex Elder } 93433803f33SAlex Elder 935c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 936c647b8a8SIlya Dryomov unsigned int which, 937c647b8a8SIlya Dryomov u64 expected_object_size, 938c647b8a8SIlya Dryomov u64 expected_write_size) 939c647b8a8SIlya Dryomov { 940c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 941144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 942144cba14SYan, Zheng 0); 943c647b8a8SIlya Dryomov 944c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 945c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 946c647b8a8SIlya Dryomov 947c647b8a8SIlya Dryomov /* 948c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 949c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 950c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 951c647b8a8SIlya Dryomov */ 952c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 953c647b8a8SIlya Dryomov } 954c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 955c647b8a8SIlya Dryomov 95690af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 957ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 958ec9123c5SAlex Elder { 959ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 960ec9123c5SAlex Elder 961ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 962ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 963ec9123c5SAlex Elder if (length) 96490af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 965e8862740SIlya Dryomov length, osd_data->alignment, false); 966ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 967ec9123c5SAlex Elder BUG_ON(!length); 96890af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 969ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 970ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 9715359a17dSIlya Dryomov ceph_msg_data_add_bio(msg, &osd_data->bio_pos, length); 972ec9123c5SAlex Elder #endif 973b9e281c2SIlya Dryomov } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BVECS) { 974b9e281c2SIlya Dryomov ceph_msg_data_add_bvecs(msg, &osd_data->bvec_pos); 975ec9123c5SAlex Elder } else { 976ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 977ec9123c5SAlex Elder } 978ec9123c5SAlex Elder } 979ec9123c5SAlex Elder 980bb873b53SIlya Dryomov static u32 osd_req_encode_op(struct ceph_osd_op *dst, 981bb873b53SIlya Dryomov const struct ceph_osd_req_op *src) 9823d14c5d2SYehuda Sadeh { 983065a68f9SAlex Elder switch (src->op) { 984fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 985fbfab539SAlex Elder break; 9863d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 9873d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 988e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 989ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 990ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 991175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 992175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 9933d14c5d2SYehuda Sadeh dst->extent.truncate_size = 9943d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 9953d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 9963d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 9973d14c5d2SYehuda Sadeh break; 9983d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 9993d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 10003d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 1001bb873b53SIlya Dryomov dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 10023d14c5d2SYehuda Sadeh break; 1003a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 1004a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 1005922dab61SIlya Dryomov dst->watch.ver = cpu_to_le64(0); 1006922dab61SIlya Dryomov dst->watch.op = src->watch.op; 1007922dab61SIlya Dryomov dst->watch.gen = cpu_to_le32(src->watch.gen); 1008922dab61SIlya Dryomov break; 1009922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 1010a40c4f10SYehuda Sadeh break; 101119079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 101219079203SIlya Dryomov dst->notify.cookie = cpu_to_le64(src->notify.cookie); 101319079203SIlya Dryomov break; 1014a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 1015a4ed38d7SDouglas Fuller break; 1016c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 1017c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 1018c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 1019c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 1020c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 1021c647b8a8SIlya Dryomov break; 1022d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 1023d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 1024d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 1025d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 1026d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 1027d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 1028d74b50beSYan, Zheng break; 1029864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 1030864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 1031864e9197SYan, Zheng break; 103278beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 103323ddf9beSLuis Henriques dst->copy_from.snapid = cpu_to_le64(src->copy_from.snapid); 103423ddf9beSLuis Henriques dst->copy_from.src_version = 103523ddf9beSLuis Henriques cpu_to_le64(src->copy_from.src_version); 103623ddf9beSLuis Henriques dst->copy_from.flags = src->copy_from.flags; 103723ddf9beSLuis Henriques dst->copy_from.src_fadvise_flags = 103823ddf9beSLuis Henriques cpu_to_le32(src->copy_from.src_fadvise_flags); 103923ddf9beSLuis Henriques break; 10403d14c5d2SYehuda Sadeh default: 10414c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 10428f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 10434c46459cSAlex Elder WARN_ON(1); 1044a8dd0a37SAlex Elder 1045a8dd0a37SAlex Elder return 0; 10463d14c5d2SYehuda Sadeh } 10477b25bf5fSIlya Dryomov 1048a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 10497b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 1050de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 1051175face2SAlex Elder 1052bb873b53SIlya Dryomov return src->indata_len; 10533d14c5d2SYehuda Sadeh } 10543d14c5d2SYehuda Sadeh 10553d14c5d2SYehuda Sadeh /* 10563d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 10573d14c5d2SYehuda Sadeh * extent as needed. 10583d14c5d2SYehuda Sadeh * 10593d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 10603d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 10613d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 10623d14c5d2SYehuda Sadeh */ 10633d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 10643d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 10653d14c5d2SYehuda Sadeh struct ceph_vino vino, 1066715e4cd4SYan, Zheng u64 off, u64 *plen, 1067715e4cd4SYan, Zheng unsigned int which, int num_ops, 10683d14c5d2SYehuda Sadeh int opcode, int flags, 10693d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 10703d14c5d2SYehuda Sadeh u32 truncate_seq, 10713d14c5d2SYehuda Sadeh u64 truncate_size, 1072153e5167SAlex Elder bool use_mempool) 10733d14c5d2SYehuda Sadeh { 10743d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 107575d1c941SAlex Elder u64 objnum = 0; 107675d1c941SAlex Elder u64 objoff = 0; 107775d1c941SAlex Elder u64 objlen = 0; 10786816282dSSage Weil int r; 10793d14c5d2SYehuda Sadeh 1080ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 1081864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 1082864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 10833d14c5d2SYehuda Sadeh 1084acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 1085ae7ca4a3SAlex Elder GFP_NOFS); 108613d1ad16SIlya Dryomov if (!req) { 108713d1ad16SIlya Dryomov r = -ENOMEM; 108813d1ad16SIlya Dryomov goto fail; 108913d1ad16SIlya Dryomov } 109079528734SAlex Elder 10913d14c5d2SYehuda Sadeh /* calculate max write size */ 1092a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 109313d1ad16SIlya Dryomov if (r) 109413d1ad16SIlya Dryomov goto fail; 1095a19dadfbSAlex Elder 1096864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 1097144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 1098864e9197SYan, Zheng } else { 10997627151eSYan, Zheng u32 object_size = layout->object_size; 1100864e9197SYan, Zheng u32 object_base = off - objoff; 1101ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 1102d18d1e28SAlex Elder if (truncate_size <= object_base) { 1103d18d1e28SAlex Elder truncate_size = 0; 1104d18d1e28SAlex Elder } else { 1105d18d1e28SAlex Elder truncate_size -= object_base; 1106d18d1e28SAlex Elder if (truncate_size > object_size) 1107d18d1e28SAlex Elder truncate_size = object_size; 1108d18d1e28SAlex Elder } 1109ccca4e37SYan, Zheng } 1110715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 1111b0270324SAlex Elder truncate_size, truncate_seq); 1112864e9197SYan, Zheng } 1113d18d1e28SAlex Elder 1114bb873b53SIlya Dryomov req->r_flags = flags; 11157627151eSYan, Zheng req->r_base_oloc.pool = layout->pool_id; 111630c156d9SYan, Zheng req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns); 1117d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 1118dbe0fc41SAlex Elder 1119bb873b53SIlya Dryomov req->r_snapid = vino.snap; 1120bb873b53SIlya Dryomov if (flags & CEPH_OSD_FLAG_WRITE) 1121bb873b53SIlya Dryomov req->r_data_offset = off; 1122bb873b53SIlya Dryomov 11230d9c1ab3SIlya Dryomov if (num_ops > 1) 11240d9c1ab3SIlya Dryomov /* 11250d9c1ab3SIlya Dryomov * This is a special case for ceph_writepages_start(), but it 11260d9c1ab3SIlya Dryomov * also covers ceph_uninline_data(). If more multi-op request 11270d9c1ab3SIlya Dryomov * use cases emerge, we will need a separate helper. 11280d9c1ab3SIlya Dryomov */ 11290d9c1ab3SIlya Dryomov r = __ceph_osdc_alloc_messages(req, GFP_NOFS, num_ops, 0); 11300d9c1ab3SIlya Dryomov else 113113d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 113213d1ad16SIlya Dryomov if (r) 113313d1ad16SIlya Dryomov goto fail; 113413d1ad16SIlya Dryomov 11353d14c5d2SYehuda Sadeh return req; 113613d1ad16SIlya Dryomov 113713d1ad16SIlya Dryomov fail: 113813d1ad16SIlya Dryomov ceph_osdc_put_request(req); 113913d1ad16SIlya Dryomov return ERR_PTR(r); 11403d14c5d2SYehuda Sadeh } 11413d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 11423d14c5d2SYehuda Sadeh 11433d14c5d2SYehuda Sadeh /* 11443d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 11453d14c5d2SYehuda Sadeh */ 1146fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 11474609245eSIlya Dryomov DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) 11483d14c5d2SYehuda Sadeh 114966850df5SIlya Dryomov /* 115066850df5SIlya Dryomov * Call @fn on each OSD request as long as @fn returns 0. 115166850df5SIlya Dryomov */ 115266850df5SIlya Dryomov static void for_each_request(struct ceph_osd_client *osdc, 115366850df5SIlya Dryomov int (*fn)(struct ceph_osd_request *req, void *arg), 115466850df5SIlya Dryomov void *arg) 115566850df5SIlya Dryomov { 115666850df5SIlya Dryomov struct rb_node *n, *p; 115766850df5SIlya Dryomov 115866850df5SIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 115966850df5SIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 116066850df5SIlya Dryomov 116166850df5SIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 116266850df5SIlya Dryomov struct ceph_osd_request *req = 116366850df5SIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 116466850df5SIlya Dryomov 116566850df5SIlya Dryomov p = rb_next(p); 116666850df5SIlya Dryomov if (fn(req, arg)) 116766850df5SIlya Dryomov return; 116866850df5SIlya Dryomov } 116966850df5SIlya Dryomov } 117066850df5SIlya Dryomov 117166850df5SIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 117266850df5SIlya Dryomov struct ceph_osd_request *req = 117366850df5SIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 117466850df5SIlya Dryomov 117566850df5SIlya Dryomov p = rb_next(p); 117666850df5SIlya Dryomov if (fn(req, arg)) 117766850df5SIlya Dryomov return; 117866850df5SIlya Dryomov } 117966850df5SIlya Dryomov } 118066850df5SIlya Dryomov 11810247a0cfSIlya Dryomov static bool osd_homeless(struct ceph_osd *osd) 11820247a0cfSIlya Dryomov { 11830247a0cfSIlya Dryomov return osd->o_osd == CEPH_HOMELESS_OSD; 11840247a0cfSIlya Dryomov } 11850247a0cfSIlya Dryomov 11865aea3dcdSIlya Dryomov static bool osd_registered(struct ceph_osd *osd) 11873d14c5d2SYehuda Sadeh { 11885aea3dcdSIlya Dryomov verify_osdc_locked(osd->o_osdc); 11893d14c5d2SYehuda Sadeh 11905aea3dcdSIlya Dryomov return !RB_EMPTY_NODE(&osd->o_node); 11913d14c5d2SYehuda Sadeh } 11923d14c5d2SYehuda Sadeh 11933d14c5d2SYehuda Sadeh /* 11940247a0cfSIlya Dryomov * Assumes @osd is zero-initialized. 11950247a0cfSIlya Dryomov */ 11960247a0cfSIlya Dryomov static void osd_init(struct ceph_osd *osd) 11970247a0cfSIlya Dryomov { 119802113a0fSElena Reshetova refcount_set(&osd->o_ref, 1); 11990247a0cfSIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 12005aea3dcdSIlya Dryomov osd->o_requests = RB_ROOT; 1201922dab61SIlya Dryomov osd->o_linger_requests = RB_ROOT; 1202a02a946dSIlya Dryomov osd->o_backoff_mappings = RB_ROOT; 1203a02a946dSIlya Dryomov osd->o_backoffs_by_id = RB_ROOT; 12040247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_osd_lru); 12050247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_keepalive_item); 12060247a0cfSIlya Dryomov osd->o_incarnation = 1; 12075aea3dcdSIlya Dryomov mutex_init(&osd->lock); 12080247a0cfSIlya Dryomov } 12090247a0cfSIlya Dryomov 12100247a0cfSIlya Dryomov static void osd_cleanup(struct ceph_osd *osd) 12110247a0cfSIlya Dryomov { 12120247a0cfSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); 12135aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 1214922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 1215a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoff_mappings)); 1216a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoffs_by_id)); 12170247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_osd_lru)); 12180247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_keepalive_item)); 12190247a0cfSIlya Dryomov 12200247a0cfSIlya Dryomov if (osd->o_auth.authorizer) { 12210247a0cfSIlya Dryomov WARN_ON(osd_homeless(osd)); 12220247a0cfSIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 12230247a0cfSIlya Dryomov } 12240247a0cfSIlya Dryomov } 12250247a0cfSIlya Dryomov 12260247a0cfSIlya Dryomov /* 12273d14c5d2SYehuda Sadeh * Track open sessions with osds. 12283d14c5d2SYehuda Sadeh */ 1229e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 12303d14c5d2SYehuda Sadeh { 12313d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12323d14c5d2SYehuda Sadeh 12330247a0cfSIlya Dryomov WARN_ON(onum == CEPH_HOMELESS_OSD); 12340247a0cfSIlya Dryomov 12357a28f59bSIlya Dryomov osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); 12360247a0cfSIlya Dryomov osd_init(osd); 12373d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1238e10006f8SAlex Elder osd->o_osd = onum; 12393d14c5d2SYehuda Sadeh 1240b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 12413d14c5d2SYehuda Sadeh 12423d14c5d2SYehuda Sadeh return osd; 12433d14c5d2SYehuda Sadeh } 12443d14c5d2SYehuda Sadeh 12453d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 12463d14c5d2SYehuda Sadeh { 124702113a0fSElena Reshetova if (refcount_inc_not_zero(&osd->o_ref)) { 124802113a0fSElena Reshetova dout("get_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref)-1, 124902113a0fSElena Reshetova refcount_read(&osd->o_ref)); 12503d14c5d2SYehuda Sadeh return osd; 12513d14c5d2SYehuda Sadeh } else { 12523d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 12533d14c5d2SYehuda Sadeh return NULL; 12543d14c5d2SYehuda Sadeh } 12553d14c5d2SYehuda Sadeh } 12563d14c5d2SYehuda Sadeh 12573d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 12583d14c5d2SYehuda Sadeh { 125902113a0fSElena Reshetova dout("put_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref), 126002113a0fSElena Reshetova refcount_read(&osd->o_ref) - 1); 126102113a0fSElena Reshetova if (refcount_dec_and_test(&osd->o_ref)) { 12620247a0cfSIlya Dryomov osd_cleanup(osd); 12633d14c5d2SYehuda Sadeh kfree(osd); 12643d14c5d2SYehuda Sadeh } 12653d14c5d2SYehuda Sadeh } 12663d14c5d2SYehuda Sadeh 1267fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1268fcd00b68SIlya Dryomov 12699dd2845cSIlya Dryomov static void __move_osd_to_lru(struct ceph_osd *osd) 12703d14c5d2SYehuda Sadeh { 12719dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 12729dd2845cSIlya Dryomov 12739dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 12743d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1275bbf37ec3SIlya Dryomov 12769dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 12773d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 12789dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 12799dd2845cSIlya Dryomov 1280a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 12813d14c5d2SYehuda Sadeh } 12823d14c5d2SYehuda Sadeh 12839dd2845cSIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd *osd) 1284bbf37ec3SIlya Dryomov { 12855aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1286922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) 12879dd2845cSIlya Dryomov __move_osd_to_lru(osd); 1288bbf37ec3SIlya Dryomov } 1289bbf37ec3SIlya Dryomov 12903d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 12913d14c5d2SYehuda Sadeh { 12929dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 12939dd2845cSIlya Dryomov 12949dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 12959dd2845cSIlya Dryomov 12969dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 12973d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 12983d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 12999dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 13003d14c5d2SYehuda Sadeh } 13013d14c5d2SYehuda Sadeh 13023d14c5d2SYehuda Sadeh /* 13035aea3dcdSIlya Dryomov * Close the connection and assign any leftover requests to the 13045aea3dcdSIlya Dryomov * homeless session. 13055aea3dcdSIlya Dryomov */ 13065aea3dcdSIlya Dryomov static void close_osd(struct ceph_osd *osd) 13075aea3dcdSIlya Dryomov { 13085aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 13095aea3dcdSIlya Dryomov struct rb_node *n; 13105aea3dcdSIlya Dryomov 13115aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 13125aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 13135aea3dcdSIlya Dryomov 13145aea3dcdSIlya Dryomov ceph_con_close(&osd->o_con); 13155aea3dcdSIlya Dryomov 13165aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 13175aea3dcdSIlya Dryomov struct ceph_osd_request *req = 13185aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 13195aea3dcdSIlya Dryomov 13205aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 13215aea3dcdSIlya Dryomov 13225aea3dcdSIlya Dryomov dout(" reassigning req %p tid %llu\n", req, req->r_tid); 13235aea3dcdSIlya Dryomov unlink_request(osd, req); 13245aea3dcdSIlya Dryomov link_request(&osdc->homeless_osd, req); 13255aea3dcdSIlya Dryomov } 1326922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 1327922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1328922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 1329922dab61SIlya Dryomov 1330922dab61SIlya Dryomov n = rb_next(n); /* unlink_linger() */ 1331922dab61SIlya Dryomov 1332922dab61SIlya Dryomov dout(" reassigning lreq %p linger_id %llu\n", lreq, 1333922dab61SIlya Dryomov lreq->linger_id); 1334922dab61SIlya Dryomov unlink_linger(osd, lreq); 1335922dab61SIlya Dryomov link_linger(&osdc->homeless_osd, lreq); 1336922dab61SIlya Dryomov } 1337a02a946dSIlya Dryomov clear_backoffs(osd); 13385aea3dcdSIlya Dryomov 13395aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 13405aea3dcdSIlya Dryomov erase_osd(&osdc->osds, osd); 13415aea3dcdSIlya Dryomov put_osd(osd); 13425aea3dcdSIlya Dryomov } 13435aea3dcdSIlya Dryomov 13445aea3dcdSIlya Dryomov /* 13453d14c5d2SYehuda Sadeh * reset osd connect 13463d14c5d2SYehuda Sadeh */ 13475aea3dcdSIlya Dryomov static int reopen_osd(struct ceph_osd *osd) 13483d14c5d2SYehuda Sadeh { 1349c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 13503d14c5d2SYehuda Sadeh 13515aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 13525aea3dcdSIlya Dryomov 13535aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1354922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) { 13555aea3dcdSIlya Dryomov close_osd(osd); 1356c3acb181SAlex Elder return -ENODEV; 1357c3acb181SAlex Elder } 1358c3acb181SAlex Elder 13595aea3dcdSIlya Dryomov peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; 1360c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 13613d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 13625aea3dcdSIlya Dryomov struct rb_node *n; 1363c3acb181SAlex Elder 13643d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 13650b4af2e8SIlya Dryomov "letting msgr retry\n"); 13663d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 13675aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 13685aea3dcdSIlya Dryomov struct ceph_osd_request *req = 13695aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 13703d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 13715aea3dcdSIlya Dryomov } 1372c3acb181SAlex Elder 1373c3acb181SAlex Elder return -EAGAIN; 13743d14c5d2SYehuda Sadeh } 1375c3acb181SAlex Elder 1376c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1377c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1378c3acb181SAlex Elder osd->o_incarnation++; 1379c3acb181SAlex Elder 1380c3acb181SAlex Elder return 0; 13813d14c5d2SYehuda Sadeh } 13823d14c5d2SYehuda Sadeh 13835aea3dcdSIlya Dryomov static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, 13845aea3dcdSIlya Dryomov bool wrlocked) 13853d14c5d2SYehuda Sadeh { 13865aea3dcdSIlya Dryomov struct ceph_osd *osd; 13875aea3dcdSIlya Dryomov 13885aea3dcdSIlya Dryomov if (wrlocked) 13895aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 13905aea3dcdSIlya Dryomov else 13915aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 13925aea3dcdSIlya Dryomov 13935aea3dcdSIlya Dryomov if (o != CEPH_HOMELESS_OSD) 13945aea3dcdSIlya Dryomov osd = lookup_osd(&osdc->osds, o); 13955aea3dcdSIlya Dryomov else 13965aea3dcdSIlya Dryomov osd = &osdc->homeless_osd; 13975aea3dcdSIlya Dryomov if (!osd) { 13985aea3dcdSIlya Dryomov if (!wrlocked) 13995aea3dcdSIlya Dryomov return ERR_PTR(-EAGAIN); 14005aea3dcdSIlya Dryomov 14015aea3dcdSIlya Dryomov osd = create_osd(osdc, o); 14025aea3dcdSIlya Dryomov insert_osd(&osdc->osds, osd); 14035aea3dcdSIlya Dryomov ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, 14045aea3dcdSIlya Dryomov &osdc->osdmap->osd_addr[osd->o_osd]); 14055aea3dcdSIlya Dryomov } 14065aea3dcdSIlya Dryomov 14075aea3dcdSIlya Dryomov dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); 14085aea3dcdSIlya Dryomov return osd; 1409a40c4f10SYehuda Sadeh } 1410a40c4f10SYehuda Sadeh 14113d14c5d2SYehuda Sadeh /* 14125aea3dcdSIlya Dryomov * Create request <-> OSD session relation. 14135aea3dcdSIlya Dryomov * 14145aea3dcdSIlya Dryomov * @req has to be assigned a tid, @osd may be homeless. 14153d14c5d2SYehuda Sadeh */ 14165aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) 14173d14c5d2SYehuda Sadeh { 14185aea3dcdSIlya Dryomov verify_osd_locked(osd); 14195aea3dcdSIlya Dryomov WARN_ON(!req->r_tid || req->r_osd); 14205aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 142135f9f8a0SSage Weil req, req->r_tid); 14225aea3dcdSIlya Dryomov 14235aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 14245aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 14255aea3dcdSIlya Dryomov else 14265aea3dcdSIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 14275aea3dcdSIlya Dryomov 14285aea3dcdSIlya Dryomov get_osd(osd); 14295aea3dcdSIlya Dryomov insert_request(&osd->o_requests, req); 14305aea3dcdSIlya Dryomov req->r_osd = osd; 143135f9f8a0SSage Weil } 143235f9f8a0SSage Weil 14335aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) 14343d14c5d2SYehuda Sadeh { 14355aea3dcdSIlya Dryomov verify_osd_locked(osd); 14365aea3dcdSIlya Dryomov WARN_ON(req->r_osd != osd); 14375aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 14385aea3dcdSIlya Dryomov req, req->r_tid); 14395aea3dcdSIlya Dryomov 14405aea3dcdSIlya Dryomov req->r_osd = NULL; 14415aea3dcdSIlya Dryomov erase_request(&osd->o_requests, req); 14425aea3dcdSIlya Dryomov put_osd(osd); 14435aea3dcdSIlya Dryomov 14445aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 14455aea3dcdSIlya Dryomov maybe_move_osd_to_lru(osd); 14465aea3dcdSIlya Dryomov else 14475aea3dcdSIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 14483d14c5d2SYehuda Sadeh } 14493d14c5d2SYehuda Sadeh 145063244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 145163244fa1SIlya Dryomov { 145263244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 145363244fa1SIlya Dryomov } 145463244fa1SIlya Dryomov 145542c1b124SIlya Dryomov static bool have_pool_full(struct ceph_osd_client *osdc) 145642c1b124SIlya Dryomov { 145742c1b124SIlya Dryomov struct rb_node *n; 145842c1b124SIlya Dryomov 145942c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 146042c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 146142c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 146242c1b124SIlya Dryomov 146342c1b124SIlya Dryomov if (__pool_full(pi)) 146442c1b124SIlya Dryomov return true; 146542c1b124SIlya Dryomov } 146642c1b124SIlya Dryomov 146742c1b124SIlya Dryomov return false; 146842c1b124SIlya Dryomov } 146942c1b124SIlya Dryomov 14705aea3dcdSIlya Dryomov static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) 14715aea3dcdSIlya Dryomov { 14725aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 14735aea3dcdSIlya Dryomov 14745aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 14755aea3dcdSIlya Dryomov if (!pi) 14765aea3dcdSIlya Dryomov return false; 14775aea3dcdSIlya Dryomov 14785aea3dcdSIlya Dryomov return __pool_full(pi); 14795aea3dcdSIlya Dryomov } 14805aea3dcdSIlya Dryomov 14813d14c5d2SYehuda Sadeh /* 1482d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1483d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1484d29adb34SJosh Durgin */ 148563244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 148663244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 148763244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 148863244fa1SIlya Dryomov { 1489b7ec35b3SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 1490b7ec35b3SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 1491b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 149263244fa1SIlya Dryomov __pool_full(pi); 149363244fa1SIlya Dryomov 14946d637a54SIlya Dryomov WARN_ON(pi->id != t->target_oloc.pool); 149558eb7932SJeff Layton return ((t->flags & CEPH_OSD_FLAG_READ) && pauserd) || 149658eb7932SJeff Layton ((t->flags & CEPH_OSD_FLAG_WRITE) && pausewr) || 149758eb7932SJeff Layton (osdc->osdmap->epoch < osdc->epoch_barrier); 149863244fa1SIlya Dryomov } 149963244fa1SIlya Dryomov 150063244fa1SIlya Dryomov enum calc_target_result { 150163244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 150263244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 150363244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 150463244fa1SIlya Dryomov }; 150563244fa1SIlya Dryomov 150663244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 150763244fa1SIlya Dryomov struct ceph_osd_request_target *t, 150863244fa1SIlya Dryomov bool any_change) 150963244fa1SIlya Dryomov { 151063244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 151163244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 151263244fa1SIlya Dryomov struct ceph_osds up, acting; 151363244fa1SIlya Dryomov bool force_resend = false; 151484ed45dfSIlya Dryomov bool unpaused = false; 1515a5613724SIlya Dryomov bool legacy_change = false; 15167de030d6SIlya Dryomov bool split = false; 1517b7ec35b3SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); 1518ae78dd81SIlya Dryomov bool recovery_deletes = ceph_osdmap_flag(osdc, 1519ae78dd81SIlya Dryomov CEPH_OSDMAP_RECOVERY_DELETES); 152063244fa1SIlya Dryomov enum calc_target_result ct_res; 152163244fa1SIlya Dryomov 152204c7d789SIlya Dryomov t->epoch = osdc->osdmap->epoch; 152363244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 152463244fa1SIlya Dryomov if (!pi) { 152563244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 152663244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 152763244fa1SIlya Dryomov goto out; 152863244fa1SIlya Dryomov } 152963244fa1SIlya Dryomov 153063244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 1531dc93e0e2SIlya Dryomov if (t->last_force_resend < pi->last_force_request_resend) { 1532dc93e0e2SIlya Dryomov t->last_force_resend = pi->last_force_request_resend; 153363244fa1SIlya Dryomov force_resend = true; 1534dc93e0e2SIlya Dryomov } else if (t->last_force_resend == 0) { 153563244fa1SIlya Dryomov force_resend = true; 153663244fa1SIlya Dryomov } 153763244fa1SIlya Dryomov } 153863244fa1SIlya Dryomov 1539db098ec4SIlya Dryomov /* apply tiering */ 1540db098ec4SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 1541db098ec4SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 1542db098ec4SIlya Dryomov if ((t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 154363244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) 154463244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 154563244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) 154663244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 15476d637a54SIlya Dryomov 15486d637a54SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->target_oloc.pool); 15496d637a54SIlya Dryomov if (!pi) { 15506d637a54SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 15516d637a54SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 15526d637a54SIlya Dryomov goto out; 15536d637a54SIlya Dryomov } 155463244fa1SIlya Dryomov } 155563244fa1SIlya Dryomov 1556a86f009fSIlya Dryomov __ceph_object_locator_to_pg(pi, &t->target_oid, &t->target_oloc, &pgid); 155763244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 155863244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 155963244fa1SIlya Dryomov 1560df28152dSIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, pi, &pgid, &up, &acting); 156163244fa1SIlya Dryomov if (any_change && 156263244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 156363244fa1SIlya Dryomov &acting, 156463244fa1SIlya Dryomov &t->up, 156563244fa1SIlya Dryomov &up, 156663244fa1SIlya Dryomov t->size, 156763244fa1SIlya Dryomov pi->size, 156863244fa1SIlya Dryomov t->min_size, 156963244fa1SIlya Dryomov pi->min_size, 157063244fa1SIlya Dryomov t->pg_num, 157163244fa1SIlya Dryomov pi->pg_num, 157263244fa1SIlya Dryomov t->sort_bitwise, 157363244fa1SIlya Dryomov sort_bitwise, 1574ae78dd81SIlya Dryomov t->recovery_deletes, 1575ae78dd81SIlya Dryomov recovery_deletes, 157663244fa1SIlya Dryomov &last_pgid)) 157763244fa1SIlya Dryomov force_resend = true; 157863244fa1SIlya Dryomov 157963244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 158063244fa1SIlya Dryomov t->paused = false; 158184ed45dfSIlya Dryomov unpaused = true; 158263244fa1SIlya Dryomov } 158384ed45dfSIlya Dryomov legacy_change = ceph_pg_compare(&t->pgid, &pgid) || 158484ed45dfSIlya Dryomov ceph_osds_changed(&t->acting, &acting, any_change); 15857de030d6SIlya Dryomov if (t->pg_num) 15867de030d6SIlya Dryomov split = ceph_pg_is_split(&last_pgid, t->pg_num, pi->pg_num); 158763244fa1SIlya Dryomov 15887de030d6SIlya Dryomov if (legacy_change || force_resend || split) { 158963244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 1590df28152dSIlya Dryomov ceph_pg_to_primary_shard(osdc->osdmap, pi, &pgid, &t->spgid); 159163244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 159263244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 159363244fa1SIlya Dryomov t->size = pi->size; 159463244fa1SIlya Dryomov t->min_size = pi->min_size; 159563244fa1SIlya Dryomov t->pg_num = pi->pg_num; 159663244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 159763244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 1598ae78dd81SIlya Dryomov t->recovery_deletes = recovery_deletes; 159963244fa1SIlya Dryomov 160063244fa1SIlya Dryomov t->osd = acting.primary; 160163244fa1SIlya Dryomov } 160263244fa1SIlya Dryomov 1603a5613724SIlya Dryomov if (unpaused || legacy_change || force_resend || split) 160484ed45dfSIlya Dryomov ct_res = CALC_TARGET_NEED_RESEND; 160584ed45dfSIlya Dryomov else 160684ed45dfSIlya Dryomov ct_res = CALC_TARGET_NO_ACTION; 160784ed45dfSIlya Dryomov 160863244fa1SIlya Dryomov out: 1609a5613724SIlya Dryomov dout("%s t %p -> %d%d%d%d ct_res %d osd%d\n", __func__, t, unpaused, 1610a5613724SIlya Dryomov legacy_change, force_resend, split, ct_res, t->osd); 161163244fa1SIlya Dryomov return ct_res; 161263244fa1SIlya Dryomov } 161363244fa1SIlya Dryomov 1614a02a946dSIlya Dryomov static struct ceph_spg_mapping *alloc_spg_mapping(void) 1615a02a946dSIlya Dryomov { 1616a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1617a02a946dSIlya Dryomov 1618a02a946dSIlya Dryomov spg = kmalloc(sizeof(*spg), GFP_NOIO); 1619a02a946dSIlya Dryomov if (!spg) 1620a02a946dSIlya Dryomov return NULL; 1621a02a946dSIlya Dryomov 1622a02a946dSIlya Dryomov RB_CLEAR_NODE(&spg->node); 1623a02a946dSIlya Dryomov spg->backoffs = RB_ROOT; 1624a02a946dSIlya Dryomov return spg; 1625a02a946dSIlya Dryomov } 1626a02a946dSIlya Dryomov 1627a02a946dSIlya Dryomov static void free_spg_mapping(struct ceph_spg_mapping *spg) 1628a02a946dSIlya Dryomov { 1629a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&spg->node)); 1630a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&spg->backoffs)); 1631a02a946dSIlya Dryomov 1632a02a946dSIlya Dryomov kfree(spg); 1633a02a946dSIlya Dryomov } 1634a02a946dSIlya Dryomov 1635a02a946dSIlya Dryomov /* 1636a02a946dSIlya Dryomov * rbtree of ceph_spg_mapping for handling map<spg_t, ...>, similar to 1637a02a946dSIlya Dryomov * ceph_pg_mapping. Used to track OSD backoffs -- a backoff [range] is 1638a02a946dSIlya Dryomov * defined only within a specific spgid; it does not pass anything to 1639a02a946dSIlya Dryomov * children on split, or to another primary. 1640a02a946dSIlya Dryomov */ 1641a02a946dSIlya Dryomov DEFINE_RB_FUNCS2(spg_mapping, struct ceph_spg_mapping, spgid, ceph_spg_compare, 1642a02a946dSIlya Dryomov RB_BYPTR, const struct ceph_spg *, node) 1643a02a946dSIlya Dryomov 1644a02a946dSIlya Dryomov static u64 hoid_get_bitwise_key(const struct ceph_hobject_id *hoid) 1645a02a946dSIlya Dryomov { 1646a02a946dSIlya Dryomov return hoid->is_max ? 0x100000000ull : hoid->hash_reverse_bits; 1647a02a946dSIlya Dryomov } 1648a02a946dSIlya Dryomov 1649a02a946dSIlya Dryomov static void hoid_get_effective_key(const struct ceph_hobject_id *hoid, 1650a02a946dSIlya Dryomov void **pkey, size_t *pkey_len) 1651a02a946dSIlya Dryomov { 1652a02a946dSIlya Dryomov if (hoid->key_len) { 1653a02a946dSIlya Dryomov *pkey = hoid->key; 1654a02a946dSIlya Dryomov *pkey_len = hoid->key_len; 1655a02a946dSIlya Dryomov } else { 1656a02a946dSIlya Dryomov *pkey = hoid->oid; 1657a02a946dSIlya Dryomov *pkey_len = hoid->oid_len; 1658a02a946dSIlya Dryomov } 1659a02a946dSIlya Dryomov } 1660a02a946dSIlya Dryomov 1661a02a946dSIlya Dryomov static int compare_names(const void *name1, size_t name1_len, 1662a02a946dSIlya Dryomov const void *name2, size_t name2_len) 1663a02a946dSIlya Dryomov { 1664a02a946dSIlya Dryomov int ret; 1665a02a946dSIlya Dryomov 1666a02a946dSIlya Dryomov ret = memcmp(name1, name2, min(name1_len, name2_len)); 1667a02a946dSIlya Dryomov if (!ret) { 1668a02a946dSIlya Dryomov if (name1_len < name2_len) 1669a02a946dSIlya Dryomov ret = -1; 1670a02a946dSIlya Dryomov else if (name1_len > name2_len) 1671a02a946dSIlya Dryomov ret = 1; 1672a02a946dSIlya Dryomov } 1673a02a946dSIlya Dryomov return ret; 1674a02a946dSIlya Dryomov } 1675a02a946dSIlya Dryomov 1676a02a946dSIlya Dryomov static int hoid_compare(const struct ceph_hobject_id *lhs, 1677a02a946dSIlya Dryomov const struct ceph_hobject_id *rhs) 1678a02a946dSIlya Dryomov { 1679a02a946dSIlya Dryomov void *effective_key1, *effective_key2; 1680a02a946dSIlya Dryomov size_t effective_key1_len, effective_key2_len; 1681a02a946dSIlya Dryomov int ret; 1682a02a946dSIlya Dryomov 1683a02a946dSIlya Dryomov if (lhs->is_max < rhs->is_max) 1684a02a946dSIlya Dryomov return -1; 1685a02a946dSIlya Dryomov if (lhs->is_max > rhs->is_max) 1686a02a946dSIlya Dryomov return 1; 1687a02a946dSIlya Dryomov 1688a02a946dSIlya Dryomov if (lhs->pool < rhs->pool) 1689a02a946dSIlya Dryomov return -1; 1690a02a946dSIlya Dryomov if (lhs->pool > rhs->pool) 1691a02a946dSIlya Dryomov return 1; 1692a02a946dSIlya Dryomov 1693a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) < hoid_get_bitwise_key(rhs)) 1694a02a946dSIlya Dryomov return -1; 1695a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) > hoid_get_bitwise_key(rhs)) 1696a02a946dSIlya Dryomov return 1; 1697a02a946dSIlya Dryomov 1698a02a946dSIlya Dryomov ret = compare_names(lhs->nspace, lhs->nspace_len, 1699a02a946dSIlya Dryomov rhs->nspace, rhs->nspace_len); 1700a02a946dSIlya Dryomov if (ret) 1701a02a946dSIlya Dryomov return ret; 1702a02a946dSIlya Dryomov 1703a02a946dSIlya Dryomov hoid_get_effective_key(lhs, &effective_key1, &effective_key1_len); 1704a02a946dSIlya Dryomov hoid_get_effective_key(rhs, &effective_key2, &effective_key2_len); 1705a02a946dSIlya Dryomov ret = compare_names(effective_key1, effective_key1_len, 1706a02a946dSIlya Dryomov effective_key2, effective_key2_len); 1707a02a946dSIlya Dryomov if (ret) 1708a02a946dSIlya Dryomov return ret; 1709a02a946dSIlya Dryomov 1710a02a946dSIlya Dryomov ret = compare_names(lhs->oid, lhs->oid_len, rhs->oid, rhs->oid_len); 1711a02a946dSIlya Dryomov if (ret) 1712a02a946dSIlya Dryomov return ret; 1713a02a946dSIlya Dryomov 1714a02a946dSIlya Dryomov if (lhs->snapid < rhs->snapid) 1715a02a946dSIlya Dryomov return -1; 1716a02a946dSIlya Dryomov if (lhs->snapid > rhs->snapid) 1717a02a946dSIlya Dryomov return 1; 1718a02a946dSIlya Dryomov 1719a02a946dSIlya Dryomov return 0; 1720a02a946dSIlya Dryomov } 1721a02a946dSIlya Dryomov 1722a02a946dSIlya Dryomov /* 1723a02a946dSIlya Dryomov * For decoding ->begin and ->end of MOSDBackoff only -- no MIN/MAX 1724a02a946dSIlya Dryomov * compat stuff here. 1725a02a946dSIlya Dryomov * 1726a02a946dSIlya Dryomov * Assumes @hoid is zero-initialized. 1727a02a946dSIlya Dryomov */ 1728a02a946dSIlya Dryomov static int decode_hoid(void **p, void *end, struct ceph_hobject_id *hoid) 1729a02a946dSIlya Dryomov { 1730a02a946dSIlya Dryomov u8 struct_v; 1731a02a946dSIlya Dryomov u32 struct_len; 1732a02a946dSIlya Dryomov int ret; 1733a02a946dSIlya Dryomov 1734a02a946dSIlya Dryomov ret = ceph_start_decoding(p, end, 4, "hobject_t", &struct_v, 1735a02a946dSIlya Dryomov &struct_len); 1736a02a946dSIlya Dryomov if (ret) 1737a02a946dSIlya Dryomov return ret; 1738a02a946dSIlya Dryomov 1739a02a946dSIlya Dryomov if (struct_v < 4) { 1740a02a946dSIlya Dryomov pr_err("got struct_v %d < 4 of hobject_t\n", struct_v); 1741a02a946dSIlya Dryomov goto e_inval; 1742a02a946dSIlya Dryomov } 1743a02a946dSIlya Dryomov 1744a02a946dSIlya Dryomov hoid->key = ceph_extract_encoded_string(p, end, &hoid->key_len, 1745a02a946dSIlya Dryomov GFP_NOIO); 1746a02a946dSIlya Dryomov if (IS_ERR(hoid->key)) { 1747a02a946dSIlya Dryomov ret = PTR_ERR(hoid->key); 1748a02a946dSIlya Dryomov hoid->key = NULL; 1749a02a946dSIlya Dryomov return ret; 1750a02a946dSIlya Dryomov } 1751a02a946dSIlya Dryomov 1752a02a946dSIlya Dryomov hoid->oid = ceph_extract_encoded_string(p, end, &hoid->oid_len, 1753a02a946dSIlya Dryomov GFP_NOIO); 1754a02a946dSIlya Dryomov if (IS_ERR(hoid->oid)) { 1755a02a946dSIlya Dryomov ret = PTR_ERR(hoid->oid); 1756a02a946dSIlya Dryomov hoid->oid = NULL; 1757a02a946dSIlya Dryomov return ret; 1758a02a946dSIlya Dryomov } 1759a02a946dSIlya Dryomov 1760a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->snapid, e_inval); 1761a02a946dSIlya Dryomov ceph_decode_32_safe(p, end, hoid->hash, e_inval); 1762a02a946dSIlya Dryomov ceph_decode_8_safe(p, end, hoid->is_max, e_inval); 1763a02a946dSIlya Dryomov 1764a02a946dSIlya Dryomov hoid->nspace = ceph_extract_encoded_string(p, end, &hoid->nspace_len, 1765a02a946dSIlya Dryomov GFP_NOIO); 1766a02a946dSIlya Dryomov if (IS_ERR(hoid->nspace)) { 1767a02a946dSIlya Dryomov ret = PTR_ERR(hoid->nspace); 1768a02a946dSIlya Dryomov hoid->nspace = NULL; 1769a02a946dSIlya Dryomov return ret; 1770a02a946dSIlya Dryomov } 1771a02a946dSIlya Dryomov 1772a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->pool, e_inval); 1773a02a946dSIlya Dryomov 1774a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1775a02a946dSIlya Dryomov return 0; 1776a02a946dSIlya Dryomov 1777a02a946dSIlya Dryomov e_inval: 1778a02a946dSIlya Dryomov return -EINVAL; 1779a02a946dSIlya Dryomov } 1780a02a946dSIlya Dryomov 1781a02a946dSIlya Dryomov static int hoid_encoding_size(const struct ceph_hobject_id *hoid) 1782a02a946dSIlya Dryomov { 1783a02a946dSIlya Dryomov return 8 + 4 + 1 + 8 + /* snapid, hash, is_max, pool */ 1784a02a946dSIlya Dryomov 4 + hoid->key_len + 4 + hoid->oid_len + 4 + hoid->nspace_len; 1785a02a946dSIlya Dryomov } 1786a02a946dSIlya Dryomov 1787a02a946dSIlya Dryomov static void encode_hoid(void **p, void *end, const struct ceph_hobject_id *hoid) 1788a02a946dSIlya Dryomov { 1789a02a946dSIlya Dryomov ceph_start_encoding(p, 4, 3, hoid_encoding_size(hoid)); 1790a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->key, hoid->key_len); 1791a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->oid, hoid->oid_len); 1792a02a946dSIlya Dryomov ceph_encode_64(p, hoid->snapid); 1793a02a946dSIlya Dryomov ceph_encode_32(p, hoid->hash); 1794a02a946dSIlya Dryomov ceph_encode_8(p, hoid->is_max); 1795a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->nspace, hoid->nspace_len); 1796a02a946dSIlya Dryomov ceph_encode_64(p, hoid->pool); 1797a02a946dSIlya Dryomov } 1798a02a946dSIlya Dryomov 1799a02a946dSIlya Dryomov static void free_hoid(struct ceph_hobject_id *hoid) 1800a02a946dSIlya Dryomov { 1801a02a946dSIlya Dryomov if (hoid) { 1802a02a946dSIlya Dryomov kfree(hoid->key); 1803a02a946dSIlya Dryomov kfree(hoid->oid); 1804a02a946dSIlya Dryomov kfree(hoid->nspace); 1805a02a946dSIlya Dryomov kfree(hoid); 1806a02a946dSIlya Dryomov } 1807a02a946dSIlya Dryomov } 1808a02a946dSIlya Dryomov 1809a02a946dSIlya Dryomov static struct ceph_osd_backoff *alloc_backoff(void) 1810a02a946dSIlya Dryomov { 1811a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1812a02a946dSIlya Dryomov 1813a02a946dSIlya Dryomov backoff = kzalloc(sizeof(*backoff), GFP_NOIO); 1814a02a946dSIlya Dryomov if (!backoff) 1815a02a946dSIlya Dryomov return NULL; 1816a02a946dSIlya Dryomov 1817a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->spg_node); 1818a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->id_node); 1819a02a946dSIlya Dryomov return backoff; 1820a02a946dSIlya Dryomov } 1821a02a946dSIlya Dryomov 1822a02a946dSIlya Dryomov static void free_backoff(struct ceph_osd_backoff *backoff) 1823a02a946dSIlya Dryomov { 1824a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->spg_node)); 1825a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->id_node)); 1826a02a946dSIlya Dryomov 1827a02a946dSIlya Dryomov free_hoid(backoff->begin); 1828a02a946dSIlya Dryomov free_hoid(backoff->end); 1829a02a946dSIlya Dryomov kfree(backoff); 1830a02a946dSIlya Dryomov } 1831a02a946dSIlya Dryomov 1832a02a946dSIlya Dryomov /* 1833a02a946dSIlya Dryomov * Within a specific spgid, backoffs are managed by ->begin hoid. 1834a02a946dSIlya Dryomov */ 1835a02a946dSIlya Dryomov DEFINE_RB_INSDEL_FUNCS2(backoff, struct ceph_osd_backoff, begin, hoid_compare, 1836a02a946dSIlya Dryomov RB_BYVAL, spg_node); 1837a02a946dSIlya Dryomov 1838a02a946dSIlya Dryomov static struct ceph_osd_backoff *lookup_containing_backoff(struct rb_root *root, 1839a02a946dSIlya Dryomov const struct ceph_hobject_id *hoid) 1840a02a946dSIlya Dryomov { 1841a02a946dSIlya Dryomov struct rb_node *n = root->rb_node; 1842a02a946dSIlya Dryomov 1843a02a946dSIlya Dryomov while (n) { 1844a02a946dSIlya Dryomov struct ceph_osd_backoff *cur = 1845a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_backoff, spg_node); 1846a02a946dSIlya Dryomov int cmp; 1847a02a946dSIlya Dryomov 1848a02a946dSIlya Dryomov cmp = hoid_compare(hoid, cur->begin); 1849a02a946dSIlya Dryomov if (cmp < 0) { 1850a02a946dSIlya Dryomov n = n->rb_left; 1851a02a946dSIlya Dryomov } else if (cmp > 0) { 1852a02a946dSIlya Dryomov if (hoid_compare(hoid, cur->end) < 0) 1853a02a946dSIlya Dryomov return cur; 1854a02a946dSIlya Dryomov 1855a02a946dSIlya Dryomov n = n->rb_right; 1856a02a946dSIlya Dryomov } else { 1857a02a946dSIlya Dryomov return cur; 1858a02a946dSIlya Dryomov } 1859a02a946dSIlya Dryomov } 1860a02a946dSIlya Dryomov 1861a02a946dSIlya Dryomov return NULL; 1862a02a946dSIlya Dryomov } 1863a02a946dSIlya Dryomov 1864a02a946dSIlya Dryomov /* 1865a02a946dSIlya Dryomov * Each backoff has a unique id within its OSD session. 1866a02a946dSIlya Dryomov */ 1867a02a946dSIlya Dryomov DEFINE_RB_FUNCS(backoff_by_id, struct ceph_osd_backoff, id, id_node) 1868a02a946dSIlya Dryomov 1869a02a946dSIlya Dryomov static void clear_backoffs(struct ceph_osd *osd) 1870a02a946dSIlya Dryomov { 1871a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&osd->o_backoff_mappings)) { 1872a02a946dSIlya Dryomov struct ceph_spg_mapping *spg = 1873a02a946dSIlya Dryomov rb_entry(rb_first(&osd->o_backoff_mappings), 1874a02a946dSIlya Dryomov struct ceph_spg_mapping, node); 1875a02a946dSIlya Dryomov 1876a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&spg->backoffs)) { 1877a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff = 1878a02a946dSIlya Dryomov rb_entry(rb_first(&spg->backoffs), 1879a02a946dSIlya Dryomov struct ceph_osd_backoff, spg_node); 1880a02a946dSIlya Dryomov 1881a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 1882a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 1883a02a946dSIlya Dryomov free_backoff(backoff); 1884a02a946dSIlya Dryomov } 1885a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 1886a02a946dSIlya Dryomov free_spg_mapping(spg); 1887a02a946dSIlya Dryomov } 1888a02a946dSIlya Dryomov } 1889a02a946dSIlya Dryomov 1890a02a946dSIlya Dryomov /* 1891a02a946dSIlya Dryomov * Set up a temporary, non-owning view into @t. 1892a02a946dSIlya Dryomov */ 1893a02a946dSIlya Dryomov static void hoid_fill_from_target(struct ceph_hobject_id *hoid, 1894a02a946dSIlya Dryomov const struct ceph_osd_request_target *t) 1895a02a946dSIlya Dryomov { 1896a02a946dSIlya Dryomov hoid->key = NULL; 1897a02a946dSIlya Dryomov hoid->key_len = 0; 1898a02a946dSIlya Dryomov hoid->oid = t->target_oid.name; 1899a02a946dSIlya Dryomov hoid->oid_len = t->target_oid.name_len; 1900a02a946dSIlya Dryomov hoid->snapid = CEPH_NOSNAP; 1901a02a946dSIlya Dryomov hoid->hash = t->pgid.seed; 1902a02a946dSIlya Dryomov hoid->is_max = false; 1903a02a946dSIlya Dryomov if (t->target_oloc.pool_ns) { 1904a02a946dSIlya Dryomov hoid->nspace = t->target_oloc.pool_ns->str; 1905a02a946dSIlya Dryomov hoid->nspace_len = t->target_oloc.pool_ns->len; 1906a02a946dSIlya Dryomov } else { 1907a02a946dSIlya Dryomov hoid->nspace = NULL; 1908a02a946dSIlya Dryomov hoid->nspace_len = 0; 1909a02a946dSIlya Dryomov } 1910a02a946dSIlya Dryomov hoid->pool = t->target_oloc.pool; 1911a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1912a02a946dSIlya Dryomov } 1913a02a946dSIlya Dryomov 1914a02a946dSIlya Dryomov static bool should_plug_request(struct ceph_osd_request *req) 1915a02a946dSIlya Dryomov { 1916a02a946dSIlya Dryomov struct ceph_osd *osd = req->r_osd; 1917a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1918a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1919a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 1920a02a946dSIlya Dryomov 1921a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &req->r_t.spgid); 1922a02a946dSIlya Dryomov if (!spg) 1923a02a946dSIlya Dryomov return false; 1924a02a946dSIlya Dryomov 1925a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, &req->r_t); 1926a02a946dSIlya Dryomov backoff = lookup_containing_backoff(&spg->backoffs, &hoid); 1927a02a946dSIlya Dryomov if (!backoff) 1928a02a946dSIlya Dryomov return false; 1929a02a946dSIlya Dryomov 1930a02a946dSIlya Dryomov dout("%s req %p tid %llu backoff osd%d spgid %llu.%xs%d id %llu\n", 1931a02a946dSIlya Dryomov __func__, req, req->r_tid, osd->o_osd, backoff->spgid.pgid.pool, 1932a02a946dSIlya Dryomov backoff->spgid.pgid.seed, backoff->spgid.shard, backoff->id); 1933a02a946dSIlya Dryomov return true; 1934a02a946dSIlya Dryomov } 1935a02a946dSIlya Dryomov 19360d9c1ab3SIlya Dryomov /* 19370d9c1ab3SIlya Dryomov * Keep get_num_data_items() in sync with this function. 19380d9c1ab3SIlya Dryomov */ 193998c4bfe9SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req) 19403d14c5d2SYehuda Sadeh { 194198c4bfe9SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 194298c4bfe9SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 194398c4bfe9SIlya Dryomov struct ceph_osd_req_op *op; 19443d14c5d2SYehuda Sadeh 194598c4bfe9SIlya Dryomov if (req->r_request->num_data_items || req->r_reply->num_data_items) 1946bb873b53SIlya Dryomov return; 19473d14c5d2SYehuda Sadeh 194898c4bfe9SIlya Dryomov WARN_ON(request_msg->data_length || reply_msg->data_length); 194998c4bfe9SIlya Dryomov for (op = req->r_ops; op != &req->r_ops[req->r_num_ops]; op++) { 1950bb873b53SIlya Dryomov switch (op->op) { 1951bb873b53SIlya Dryomov /* request */ 1952bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 1953bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 1954bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 195598c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 195698c4bfe9SIlya Dryomov &op->extent.osd_data); 1957bb873b53SIlya Dryomov break; 1958bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 1959bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 1960bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 1961bb873b53SIlya Dryomov op->xattr.value_len); 196298c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 196398c4bfe9SIlya Dryomov &op->xattr.osd_data); 1964bb873b53SIlya Dryomov break; 1965922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 196698c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 1967922dab61SIlya Dryomov &op->notify_ack.request_data); 1968922dab61SIlya Dryomov break; 196978beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 197023ddf9beSLuis Henriques ceph_osdc_msg_data_add(request_msg, 197123ddf9beSLuis Henriques &op->copy_from.osd_data); 197223ddf9beSLuis Henriques break; 1973bb873b53SIlya Dryomov 1974bb873b53SIlya Dryomov /* reply */ 1975bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 197698c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 1977bb873b53SIlya Dryomov &op->raw_data_in); 1978bb873b53SIlya Dryomov break; 1979bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 198098c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 1981bb873b53SIlya Dryomov &op->extent.osd_data); 1982bb873b53SIlya Dryomov break; 1983a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 198498c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 1985a4ed38d7SDouglas Fuller &op->list_watchers.response_data); 1986a4ed38d7SDouglas Fuller break; 1987bb873b53SIlya Dryomov 1988bb873b53SIlya Dryomov /* both */ 1989bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 1990bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 1991bb873b53SIlya Dryomov op->cls.method_len + 1992bb873b53SIlya Dryomov op->cls.indata_len); 199398c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 199498c4bfe9SIlya Dryomov &op->cls.request_info); 1995bb873b53SIlya Dryomov /* optional, can be NONE */ 199698c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 199798c4bfe9SIlya Dryomov &op->cls.request_data); 1998bb873b53SIlya Dryomov /* optional, can be NONE */ 199998c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 2000bb873b53SIlya Dryomov &op->cls.response_data); 2001bb873b53SIlya Dryomov break; 200219079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 200398c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 200419079203SIlya Dryomov &op->notify.request_data); 200598c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 200619079203SIlya Dryomov &op->notify.response_data); 200719079203SIlya Dryomov break; 2008bb873b53SIlya Dryomov } 2009bb873b53SIlya Dryomov } 2010bb873b53SIlya Dryomov } 2011bb873b53SIlya Dryomov 20122e59ffd1SIlya Dryomov static void encode_pgid(void **p, const struct ceph_pg *pgid) 20132e59ffd1SIlya Dryomov { 20142e59ffd1SIlya Dryomov ceph_encode_8(p, 1); 20152e59ffd1SIlya Dryomov ceph_encode_64(p, pgid->pool); 20162e59ffd1SIlya Dryomov ceph_encode_32(p, pgid->seed); 20172e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 20182e59ffd1SIlya Dryomov } 20192e59ffd1SIlya Dryomov 20208cb441c0SIlya Dryomov static void encode_spgid(void **p, const struct ceph_spg *spgid) 20218cb441c0SIlya Dryomov { 20228cb441c0SIlya Dryomov ceph_start_encoding(p, 1, 1, CEPH_PGID_ENCODING_LEN + 1); 20238cb441c0SIlya Dryomov encode_pgid(p, &spgid->pgid); 20248cb441c0SIlya Dryomov ceph_encode_8(p, spgid->shard); 20258cb441c0SIlya Dryomov } 20268cb441c0SIlya Dryomov 20272e59ffd1SIlya Dryomov static void encode_oloc(void **p, void *end, 20282e59ffd1SIlya Dryomov const struct ceph_object_locator *oloc) 20292e59ffd1SIlya Dryomov { 20302e59ffd1SIlya Dryomov ceph_start_encoding(p, 5, 4, ceph_oloc_encoding_size(oloc)); 20312e59ffd1SIlya Dryomov ceph_encode_64(p, oloc->pool); 20322e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 20332e59ffd1SIlya Dryomov ceph_encode_32(p, 0); /* key len */ 20342e59ffd1SIlya Dryomov if (oloc->pool_ns) 20352e59ffd1SIlya Dryomov ceph_encode_string(p, end, oloc->pool_ns->str, 20362e59ffd1SIlya Dryomov oloc->pool_ns->len); 20372e59ffd1SIlya Dryomov else 20382e59ffd1SIlya Dryomov ceph_encode_32(p, 0); 20392e59ffd1SIlya Dryomov } 20402e59ffd1SIlya Dryomov 20418cb441c0SIlya Dryomov static void encode_request_partial(struct ceph_osd_request *req, 20428cb441c0SIlya Dryomov struct ceph_msg *msg) 2043bb873b53SIlya Dryomov { 2044bb873b53SIlya Dryomov void *p = msg->front.iov_base; 2045bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 2046bb873b53SIlya Dryomov u32 data_len = 0; 2047bb873b53SIlya Dryomov int i; 2048bb873b53SIlya Dryomov 2049bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 2050bb873b53SIlya Dryomov /* snapshots aren't writeable */ 2051bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 2052bb873b53SIlya Dryomov } else { 2053bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 2054bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 2055bb873b53SIlya Dryomov } 2056bb873b53SIlya Dryomov 205798c4bfe9SIlya Dryomov setup_request_data(req); 2058bb873b53SIlya Dryomov 20598cb441c0SIlya Dryomov encode_spgid(&p, &req->r_t.spgid); /* actual spg */ 20608cb441c0SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); /* raw hash */ 2061bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 2062bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 20638cb441c0SIlya Dryomov 20648cb441c0SIlya Dryomov /* reqid */ 20658cb441c0SIlya Dryomov ceph_start_encoding(&p, 2, 2, sizeof(struct ceph_osd_reqid)); 20668cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_osd_reqid)); 20678cb441c0SIlya Dryomov p += sizeof(struct ceph_osd_reqid); 20688cb441c0SIlya Dryomov 20698cb441c0SIlya Dryomov /* trace */ 20708cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_blkin_trace_info)); 20718cb441c0SIlya Dryomov p += sizeof(struct ceph_blkin_trace_info); 20728cb441c0SIlya Dryomov 20738cb441c0SIlya Dryomov ceph_encode_32(&p, 0); /* client_inc, always 0 */ 2074fac02ddfSArnd Bergmann ceph_encode_timespec64(p, &req->r_mtime); 2075bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 2076aa26d662SJeff Layton 20772e59ffd1SIlya Dryomov encode_oloc(&p, end, &req->r_t.target_oloc); 20782e59ffd1SIlya Dryomov ceph_encode_string(&p, end, req->r_t.target_oid.name, 20792e59ffd1SIlya Dryomov req->r_t.target_oid.name_len); 2080bb873b53SIlya Dryomov 2081bb873b53SIlya Dryomov /* ops, can imply data */ 2082bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 2083bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 2084bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 2085bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 2086bb873b53SIlya Dryomov } 2087bb873b53SIlya Dryomov 2088bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 2089bb873b53SIlya Dryomov if (req->r_snapc) { 2090bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 2091bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 2092bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 2093bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 2094bb873b53SIlya Dryomov } else { 2095bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 2096bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 2097bb873b53SIlya Dryomov } 2098bb873b53SIlya Dryomov 2099bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 2100986e8989SIlya Dryomov BUG_ON(p > end - 8); /* space for features */ 2101bb873b53SIlya Dryomov 21028cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(8); /* MOSDOp v8 */ 21038cb441c0SIlya Dryomov /* front_len is finalized in encode_request_finish() */ 2104986e8989SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 2105986e8989SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 2106bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 2107bb873b53SIlya Dryomov /* 2108bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 2109bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 2110bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 2111bb873b53SIlya Dryomov */ 2112bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 2113bb873b53SIlya Dryomov 21148cb441c0SIlya Dryomov dout("%s req %p msg %p oid %s oid_len %d\n", __func__, req, msg, 21158cb441c0SIlya Dryomov req->r_t.target_oid.name, req->r_t.target_oid.name_len); 21168cb441c0SIlya Dryomov } 21178cb441c0SIlya Dryomov 21188cb441c0SIlya Dryomov static void encode_request_finish(struct ceph_msg *msg) 21198cb441c0SIlya Dryomov { 21208cb441c0SIlya Dryomov void *p = msg->front.iov_base; 2121986e8989SIlya Dryomov void *const partial_end = p + msg->front.iov_len; 21228cb441c0SIlya Dryomov void *const end = p + msg->front_alloc_len; 21238cb441c0SIlya Dryomov 21248cb441c0SIlya Dryomov if (CEPH_HAVE_FEATURE(msg->con->peer_features, RESEND_ON_SPLIT)) { 21258cb441c0SIlya Dryomov /* luminous OSD -- encode features and be done */ 2126986e8989SIlya Dryomov p = partial_end; 21278cb441c0SIlya Dryomov ceph_encode_64(&p, msg->con->peer_features); 21288cb441c0SIlya Dryomov } else { 21298cb441c0SIlya Dryomov struct { 21308cb441c0SIlya Dryomov char spgid[CEPH_ENCODING_START_BLK_LEN + 21318cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1]; 21328cb441c0SIlya Dryomov __le32 hash; 21338cb441c0SIlya Dryomov __le32 epoch; 21348cb441c0SIlya Dryomov __le32 flags; 21358cb441c0SIlya Dryomov char reqid[CEPH_ENCODING_START_BLK_LEN + 21368cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid)]; 21378cb441c0SIlya Dryomov char trace[sizeof(struct ceph_blkin_trace_info)]; 21388cb441c0SIlya Dryomov __le32 client_inc; 21398cb441c0SIlya Dryomov struct ceph_timespec mtime; 21408cb441c0SIlya Dryomov } __packed head; 21418cb441c0SIlya Dryomov struct ceph_pg pgid; 21428cb441c0SIlya Dryomov void *oloc, *oid, *tail; 21438cb441c0SIlya Dryomov int oloc_len, oid_len, tail_len; 21448cb441c0SIlya Dryomov int len; 21458cb441c0SIlya Dryomov 21468cb441c0SIlya Dryomov /* 21478cb441c0SIlya Dryomov * Pre-luminous OSD -- reencode v8 into v4 using @head 21488cb441c0SIlya Dryomov * as a temporary buffer. Encode the raw PG; the rest 21498cb441c0SIlya Dryomov * is just a matter of moving oloc, oid and tail blobs 21508cb441c0SIlya Dryomov * around. 21518cb441c0SIlya Dryomov */ 21528cb441c0SIlya Dryomov memcpy(&head, p, sizeof(head)); 21538cb441c0SIlya Dryomov p += sizeof(head); 21548cb441c0SIlya Dryomov 21558cb441c0SIlya Dryomov oloc = p; 21568cb441c0SIlya Dryomov p += CEPH_ENCODING_START_BLK_LEN; 21578cb441c0SIlya Dryomov pgid.pool = ceph_decode_64(&p); 21588cb441c0SIlya Dryomov p += 4 + 4; /* preferred, key len */ 21598cb441c0SIlya Dryomov len = ceph_decode_32(&p); 21608cb441c0SIlya Dryomov p += len; /* nspace */ 21618cb441c0SIlya Dryomov oloc_len = p - oloc; 21628cb441c0SIlya Dryomov 21638cb441c0SIlya Dryomov oid = p; 21648cb441c0SIlya Dryomov len = ceph_decode_32(&p); 21658cb441c0SIlya Dryomov p += len; 21668cb441c0SIlya Dryomov oid_len = p - oid; 21678cb441c0SIlya Dryomov 21688cb441c0SIlya Dryomov tail = p; 2169986e8989SIlya Dryomov tail_len = partial_end - p; 21708cb441c0SIlya Dryomov 21718cb441c0SIlya Dryomov p = msg->front.iov_base; 21728cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.client_inc, sizeof(head.client_inc)); 21738cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.epoch, sizeof(head.epoch)); 21748cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.flags, sizeof(head.flags)); 21758cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.mtime, sizeof(head.mtime)); 21768cb441c0SIlya Dryomov 21778cb441c0SIlya Dryomov /* reassert_version */ 21788cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_eversion)); 21798cb441c0SIlya Dryomov p += sizeof(struct ceph_eversion); 21808cb441c0SIlya Dryomov 21818cb441c0SIlya Dryomov BUG_ON(p >= oloc); 21828cb441c0SIlya Dryomov memmove(p, oloc, oloc_len); 21838cb441c0SIlya Dryomov p += oloc_len; 21848cb441c0SIlya Dryomov 21858cb441c0SIlya Dryomov pgid.seed = le32_to_cpu(head.hash); 21868cb441c0SIlya Dryomov encode_pgid(&p, &pgid); /* raw pg */ 21878cb441c0SIlya Dryomov 21888cb441c0SIlya Dryomov BUG_ON(p >= oid); 21898cb441c0SIlya Dryomov memmove(p, oid, oid_len); 21908cb441c0SIlya Dryomov p += oid_len; 21918cb441c0SIlya Dryomov 21928cb441c0SIlya Dryomov /* tail -- ops, snapid, snapc, retry_attempt */ 21938cb441c0SIlya Dryomov BUG_ON(p >= tail); 21948cb441c0SIlya Dryomov memmove(p, tail, tail_len); 21958cb441c0SIlya Dryomov p += tail_len; 21968cb441c0SIlya Dryomov 21978cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 21988cb441c0SIlya Dryomov } 21998cb441c0SIlya Dryomov 22008cb441c0SIlya Dryomov BUG_ON(p > end); 22018cb441c0SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 22028cb441c0SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 22038cb441c0SIlya Dryomov 22048cb441c0SIlya Dryomov dout("%s msg %p tid %llu %u+%u+%u v%d\n", __func__, msg, 22058cb441c0SIlya Dryomov le64_to_cpu(msg->hdr.tid), le32_to_cpu(msg->hdr.front_len), 22068cb441c0SIlya Dryomov le32_to_cpu(msg->hdr.middle_len), le32_to_cpu(msg->hdr.data_len), 22078cb441c0SIlya Dryomov le16_to_cpu(msg->hdr.version)); 2208bb873b53SIlya Dryomov } 2209bb873b53SIlya Dryomov 2210bb873b53SIlya Dryomov /* 2211bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 2212bb873b53SIlya Dryomov */ 2213bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 2214bb873b53SIlya Dryomov { 2215bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 2216bb873b53SIlya Dryomov 22175aea3dcdSIlya Dryomov verify_osd_locked(osd); 2218bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 2219bb873b53SIlya Dryomov 2220a02a946dSIlya Dryomov /* backoff? */ 2221a02a946dSIlya Dryomov if (should_plug_request(req)) 2222a02a946dSIlya Dryomov return; 2223a02a946dSIlya Dryomov 22245aea3dcdSIlya Dryomov /* 22255aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 22265aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 22275aea3dcdSIlya Dryomov */ 22285aea3dcdSIlya Dryomov if (req->r_sent) 22295aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 22305aea3dcdSIlya Dryomov 2231bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 2232bb873b53SIlya Dryomov if (req->r_attempts) 2233bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 2234bb873b53SIlya Dryomov else 2235bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 2236bb873b53SIlya Dryomov 22378cb441c0SIlya Dryomov encode_request_partial(req, req->r_request); 2238bb873b53SIlya Dryomov 223904c7d789SIlya 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", 2240bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 2241dc98ff72SIlya Dryomov req->r_t.spgid.pgid.pool, req->r_t.spgid.pgid.seed, 224204c7d789SIlya Dryomov req->r_t.spgid.shard, osd->o_osd, req->r_t.epoch, req->r_flags, 224304c7d789SIlya Dryomov req->r_attempts); 2244bb873b53SIlya Dryomov 2245bb873b53SIlya Dryomov req->r_t.paused = false; 22463d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 2247bb873b53SIlya Dryomov req->r_attempts++; 22483d14c5d2SYehuda Sadeh 2249bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 2250bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 2251bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 22523d14c5d2SYehuda Sadeh } 22533d14c5d2SYehuda Sadeh 225442c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 225542c1b124SIlya Dryomov { 225642c1b124SIlya Dryomov bool continuous = false; 225742c1b124SIlya Dryomov 22585aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 225942c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 226042c1b124SIlya Dryomov 2261b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2262b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || 2263b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 226442c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 226542c1b124SIlya Dryomov continuous = true; 226642c1b124SIlya Dryomov } else { 226742c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 226842c1b124SIlya Dryomov } 226942c1b124SIlya Dryomov 227042c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 227142c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 227242c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 227342c1b124SIlya Dryomov } 227442c1b124SIlya Dryomov 2275a1f4020aSJeff Layton static void complete_request(struct ceph_osd_request *req, int err); 22764609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req); 22774609245eSIlya Dryomov 22785aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 22790bbfdfe8SIlya Dryomov { 22805aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 22815aea3dcdSIlya Dryomov struct ceph_osd *osd; 22824609245eSIlya Dryomov enum calc_target_result ct_res; 228366850df5SIlya Dryomov int err = 0; 22845aea3dcdSIlya Dryomov bool need_send = false; 22855aea3dcdSIlya Dryomov bool promoted = false; 22860bbfdfe8SIlya Dryomov 2287b18b9550SIlya Dryomov WARN_ON(req->r_tid); 22885aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 22895aea3dcdSIlya Dryomov 22905aea3dcdSIlya Dryomov again: 22918edf84baSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, false); 22924609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) 22934609245eSIlya Dryomov goto promote; 22944609245eSIlya Dryomov 22955aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 22965aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 22975aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 22985aea3dcdSIlya Dryomov goto promote; 22995aea3dcdSIlya Dryomov } 23005aea3dcdSIlya Dryomov 230166850df5SIlya Dryomov if (osdc->abort_err) { 230266850df5SIlya Dryomov dout("req %p abort_err %d\n", req, osdc->abort_err); 230366850df5SIlya Dryomov err = osdc->abort_err; 230466850df5SIlya Dryomov } else if (osdc->osdmap->epoch < osdc->epoch_barrier) { 230558eb7932SJeff Layton dout("req %p epoch %u barrier %u\n", req, osdc->osdmap->epoch, 230658eb7932SJeff Layton osdc->epoch_barrier); 230758eb7932SJeff Layton req->r_t.paused = true; 230858eb7932SJeff Layton maybe_request_map(osdc); 230958eb7932SJeff Layton } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 2310b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 23115aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 23125aea3dcdSIlya Dryomov req->r_t.paused = true; 23135aea3dcdSIlya Dryomov maybe_request_map(osdc); 23145aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 2315b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 23165aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 23175aea3dcdSIlya Dryomov req->r_t.paused = true; 23185aea3dcdSIlya Dryomov maybe_request_map(osdc); 23195aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 23205aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 23215aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 2322b7ec35b3SIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 23235aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 23245aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 232502b2f549SDongsheng Yang if (ceph_test_opt(osdc->client, ABORT_ON_FULL)) { 232629e87820SIlya Dryomov err = -ENOSPC; 232729e87820SIlya Dryomov } else { 23285aea3dcdSIlya Dryomov pr_warn_ratelimited("FULL or reached pool quota\n"); 23295aea3dcdSIlya Dryomov req->r_t.paused = true; 23305aea3dcdSIlya Dryomov maybe_request_map(osdc); 233129e87820SIlya Dryomov } 23325aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 23335aea3dcdSIlya Dryomov need_send = true; 23340bbfdfe8SIlya Dryomov } else { 23355aea3dcdSIlya Dryomov maybe_request_map(osdc); 23360bbfdfe8SIlya Dryomov } 23370bbfdfe8SIlya Dryomov 23385aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 23395aea3dcdSIlya Dryomov /* 23405aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 23415aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 23425aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 23435aea3dcdSIlya Dryomov */ 23445aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 23455aea3dcdSIlya Dryomov link_request(osd, req); 23465aea3dcdSIlya Dryomov if (need_send) 23475aea3dcdSIlya Dryomov send_request(req); 234866850df5SIlya Dryomov else if (err) 234966850df5SIlya Dryomov complete_request(req, err); 23505aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 23515aea3dcdSIlya Dryomov 23526001567cSIlya Dryomov if (!err && ct_res == CALC_TARGET_POOL_DNE) 23534609245eSIlya Dryomov send_map_check(req); 23544609245eSIlya Dryomov 23555aea3dcdSIlya Dryomov if (promoted) 23565aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 23575aea3dcdSIlya Dryomov return; 23585aea3dcdSIlya Dryomov 23595aea3dcdSIlya Dryomov promote: 23605aea3dcdSIlya Dryomov up_read(&osdc->lock); 23615aea3dcdSIlya Dryomov down_write(&osdc->lock); 23625aea3dcdSIlya Dryomov wrlocked = true; 23635aea3dcdSIlya Dryomov promoted = true; 23645aea3dcdSIlya Dryomov goto again; 23650bbfdfe8SIlya Dryomov } 23660bbfdfe8SIlya Dryomov 23675aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 23685aea3dcdSIlya Dryomov { 236954ea0046SIlya Dryomov WARN_ON(req->r_flags & (CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK)); 2370b18b9550SIlya Dryomov WARN_ON(!(req->r_flags & (CEPH_OSD_FLAG_READ | CEPH_OSD_FLAG_WRITE))); 23715aea3dcdSIlya Dryomov 2372b18b9550SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ONDISK; 23735aea3dcdSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 23747cc5e38fSIlya Dryomov 23757cc5e38fSIlya Dryomov req->r_start_stamp = jiffies; 237697e27aaaSXiubo Li req->r_start_latency = ktime_get(); 23775aea3dcdSIlya Dryomov } 23785aea3dcdSIlya Dryomov 23795aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 23805aea3dcdSIlya Dryomov { 23815aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 23825aea3dcdSIlya Dryomov account_request(req); 23835aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 23845aea3dcdSIlya Dryomov } 23855aea3dcdSIlya Dryomov 238645ee2c1dSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 23875aea3dcdSIlya Dryomov { 23885aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 23895aea3dcdSIlya Dryomov 23904609245eSIlya Dryomov WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); 239104c7d789SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 239204c7d789SIlya Dryomov 239397e27aaaSXiubo Li req->r_end_latency = ktime_get(); 239497e27aaaSXiubo Li 239504c7d789SIlya Dryomov if (req->r_osd) 239604c7d789SIlya Dryomov unlink_request(req->r_osd, req); 23975aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 23985aea3dcdSIlya Dryomov 23995aea3dcdSIlya Dryomov /* 24005aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 24015aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 24025aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 24035aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 24045aea3dcdSIlya Dryomov */ 24055aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 24065aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 24075aea3dcdSIlya Dryomov } 24085aea3dcdSIlya Dryomov 2409fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 2410fe5da05eSIlya Dryomov { 2411d75f773cSSakari Ailus dout("%s req %p tid %llu cb %ps result %d\n", __func__, req, 2412b18b9550SIlya Dryomov req->r_tid, req->r_callback, req->r_result); 241326df726bSIlya Dryomov 241426df726bSIlya Dryomov if (req->r_callback) 2415fe5da05eSIlya Dryomov req->r_callback(req); 241626df726bSIlya Dryomov complete_all(&req->r_completion); 241726df726bSIlya Dryomov ceph_osdc_put_request(req); 2418b18b9550SIlya Dryomov } 2419fe5da05eSIlya Dryomov 242088bc1922SIlya Dryomov static void complete_request_workfn(struct work_struct *work) 242188bc1922SIlya Dryomov { 242288bc1922SIlya Dryomov struct ceph_osd_request *req = 242388bc1922SIlya Dryomov container_of(work, struct ceph_osd_request, r_complete_work); 242488bc1922SIlya Dryomov 242588bc1922SIlya Dryomov __complete_request(req); 24260bbfdfe8SIlya Dryomov } 24270bbfdfe8SIlya Dryomov 24284609245eSIlya Dryomov /* 2429b18b9550SIlya Dryomov * This is open-coded in handle_reply(). 24304609245eSIlya Dryomov */ 24314609245eSIlya Dryomov static void complete_request(struct ceph_osd_request *req, int err) 24324609245eSIlya Dryomov { 24334609245eSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 24344609245eSIlya Dryomov 24354609245eSIlya Dryomov req->r_result = err; 243645ee2c1dSIlya Dryomov finish_request(req); 243788bc1922SIlya Dryomov 243888bc1922SIlya Dryomov INIT_WORK(&req->r_complete_work, complete_request_workfn); 243988bc1922SIlya Dryomov queue_work(req->r_osdc->completion_wq, &req->r_complete_work); 24404609245eSIlya Dryomov } 24414609245eSIlya Dryomov 24424609245eSIlya Dryomov static void cancel_map_check(struct ceph_osd_request *req) 24434609245eSIlya Dryomov { 24444609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 24454609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 24464609245eSIlya Dryomov 24474609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 24484609245eSIlya Dryomov 24494609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 24504609245eSIlya Dryomov if (!lookup_req) 24514609245eSIlya Dryomov return; 24524609245eSIlya Dryomov 24534609245eSIlya Dryomov WARN_ON(lookup_req != req); 24544609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 24554609245eSIlya Dryomov ceph_osdc_put_request(req); 24564609245eSIlya Dryomov } 24574609245eSIlya Dryomov 24585aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 24595aea3dcdSIlya Dryomov { 24605aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 24615aea3dcdSIlya Dryomov 24624609245eSIlya Dryomov cancel_map_check(req); 246345ee2c1dSIlya Dryomov finish_request(req); 2464b18b9550SIlya Dryomov complete_all(&req->r_completion); 2465c297eb42SIlya Dryomov ceph_osdc_put_request(req); 24665aea3dcdSIlya Dryomov } 24675aea3dcdSIlya Dryomov 24687cc5e38fSIlya Dryomov static void abort_request(struct ceph_osd_request *req, int err) 24697cc5e38fSIlya Dryomov { 24707cc5e38fSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 24717cc5e38fSIlya Dryomov 24727cc5e38fSIlya Dryomov cancel_map_check(req); 24737cc5e38fSIlya Dryomov complete_request(req, err); 24747cc5e38fSIlya Dryomov } 24757cc5e38fSIlya Dryomov 247666850df5SIlya Dryomov static int abort_fn(struct ceph_osd_request *req, void *arg) 247766850df5SIlya Dryomov { 247866850df5SIlya Dryomov int err = *(int *)arg; 247966850df5SIlya Dryomov 248066850df5SIlya Dryomov abort_request(req, err); 248166850df5SIlya Dryomov return 0; /* continue iteration */ 248266850df5SIlya Dryomov } 248366850df5SIlya Dryomov 248466850df5SIlya Dryomov /* 248566850df5SIlya Dryomov * Abort all in-flight requests with @err and arrange for all future 248666850df5SIlya Dryomov * requests to be failed immediately. 248766850df5SIlya Dryomov */ 248866850df5SIlya Dryomov void ceph_osdc_abort_requests(struct ceph_osd_client *osdc, int err) 248966850df5SIlya Dryomov { 249066850df5SIlya Dryomov dout("%s osdc %p err %d\n", __func__, osdc, err); 249166850df5SIlya Dryomov down_write(&osdc->lock); 249266850df5SIlya Dryomov for_each_request(osdc, abort_fn, &err); 249366850df5SIlya Dryomov osdc->abort_err = err; 249466850df5SIlya Dryomov up_write(&osdc->lock); 249566850df5SIlya Dryomov } 249666850df5SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_abort_requests); 249766850df5SIlya Dryomov 24982cef0ba8SYan, Zheng void ceph_osdc_clear_abort_err(struct ceph_osd_client *osdc) 24992cef0ba8SYan, Zheng { 25002cef0ba8SYan, Zheng down_write(&osdc->lock); 25012cef0ba8SYan, Zheng osdc->abort_err = 0; 25022cef0ba8SYan, Zheng up_write(&osdc->lock); 25032cef0ba8SYan, Zheng } 25042cef0ba8SYan, Zheng EXPORT_SYMBOL(ceph_osdc_clear_abort_err); 25052cef0ba8SYan, Zheng 250658eb7932SJeff Layton static void update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 250758eb7932SJeff Layton { 250858eb7932SJeff Layton if (likely(eb > osdc->epoch_barrier)) { 250958eb7932SJeff Layton dout("updating epoch_barrier from %u to %u\n", 251058eb7932SJeff Layton osdc->epoch_barrier, eb); 251158eb7932SJeff Layton osdc->epoch_barrier = eb; 251258eb7932SJeff Layton /* Request map if we're not to the barrier yet */ 251358eb7932SJeff Layton if (eb > osdc->osdmap->epoch) 251458eb7932SJeff Layton maybe_request_map(osdc); 251558eb7932SJeff Layton } 251658eb7932SJeff Layton } 251758eb7932SJeff Layton 251858eb7932SJeff Layton void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 251958eb7932SJeff Layton { 252058eb7932SJeff Layton down_read(&osdc->lock); 252158eb7932SJeff Layton if (unlikely(eb > osdc->epoch_barrier)) { 252258eb7932SJeff Layton up_read(&osdc->lock); 252358eb7932SJeff Layton down_write(&osdc->lock); 252458eb7932SJeff Layton update_epoch_barrier(osdc, eb); 252558eb7932SJeff Layton up_write(&osdc->lock); 252658eb7932SJeff Layton } else { 252758eb7932SJeff Layton up_read(&osdc->lock); 252858eb7932SJeff Layton } 252958eb7932SJeff Layton } 253058eb7932SJeff Layton EXPORT_SYMBOL(ceph_osdc_update_epoch_barrier); 253158eb7932SJeff Layton 2532fc36d0a4SJeff Layton /* 25334eea0fefSIlya Dryomov * We can end up releasing caps as a result of abort_request(). 25344eea0fefSIlya Dryomov * In that case, we probably want to ensure that the cap release message 25354eea0fefSIlya Dryomov * has an updated epoch barrier in it, so set the epoch barrier prior to 25364eea0fefSIlya Dryomov * aborting the first request. 25374eea0fefSIlya Dryomov */ 25384eea0fefSIlya Dryomov static int abort_on_full_fn(struct ceph_osd_request *req, void *arg) 25394eea0fefSIlya Dryomov { 25404eea0fefSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 25414eea0fefSIlya Dryomov bool *victims = arg; 25424eea0fefSIlya Dryomov 2543c843d13cSIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 25444eea0fefSIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2545690f951dSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 25464eea0fefSIlya Dryomov if (!*victims) { 25474eea0fefSIlya Dryomov update_epoch_barrier(osdc, osdc->osdmap->epoch); 25484eea0fefSIlya Dryomov *victims = true; 25494eea0fefSIlya Dryomov } 25504eea0fefSIlya Dryomov abort_request(req, -ENOSPC); 25514eea0fefSIlya Dryomov } 25524eea0fefSIlya Dryomov 25534eea0fefSIlya Dryomov return 0; /* continue iteration */ 25544eea0fefSIlya Dryomov } 25554eea0fefSIlya Dryomov 25564eea0fefSIlya Dryomov /* 2557fc36d0a4SJeff Layton * Drop all pending requests that are stalled waiting on a full condition to 255858eb7932SJeff Layton * clear, and complete them with ENOSPC as the return code. Set the 255958eb7932SJeff Layton * osdc->epoch_barrier to the latest map epoch that we've seen if any were 256058eb7932SJeff Layton * cancelled. 2561fc36d0a4SJeff Layton */ 2562fc36d0a4SJeff Layton static void ceph_osdc_abort_on_full(struct ceph_osd_client *osdc) 2563fc36d0a4SJeff Layton { 256458eb7932SJeff Layton bool victims = false; 2565fc36d0a4SJeff Layton 256602b2f549SDongsheng Yang if (ceph_test_opt(osdc->client, ABORT_ON_FULL) && 2567c843d13cSIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || have_pool_full(osdc))) 25684eea0fefSIlya Dryomov for_each_request(osdc, abort_on_full_fn, &victims); 2569fc36d0a4SJeff Layton } 2570fc36d0a4SJeff Layton 25714609245eSIlya Dryomov static void check_pool_dne(struct ceph_osd_request *req) 25724609245eSIlya Dryomov { 25734609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 25744609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 25754609245eSIlya Dryomov 25764609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 25774609245eSIlya Dryomov WARN_ON(!map->epoch); 25784609245eSIlya Dryomov 25794609245eSIlya Dryomov if (req->r_attempts) { 25804609245eSIlya Dryomov /* 25814609245eSIlya Dryomov * We sent a request earlier, which means that 25824609245eSIlya Dryomov * previously the pool existed, and now it does not 25834609245eSIlya Dryomov * (i.e., it was deleted). 25844609245eSIlya Dryomov */ 25854609245eSIlya Dryomov req->r_map_dne_bound = map->epoch; 25864609245eSIlya Dryomov dout("%s req %p tid %llu pool disappeared\n", __func__, req, 25874609245eSIlya Dryomov req->r_tid); 25884609245eSIlya Dryomov } else { 25894609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, 25904609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, map->epoch); 25914609245eSIlya Dryomov } 25924609245eSIlya Dryomov 25934609245eSIlya Dryomov if (req->r_map_dne_bound) { 25944609245eSIlya Dryomov if (map->epoch >= req->r_map_dne_bound) { 25954609245eSIlya Dryomov /* we had a new enough map */ 25964609245eSIlya Dryomov pr_info_ratelimited("tid %llu pool does not exist\n", 25974609245eSIlya Dryomov req->r_tid); 25984609245eSIlya Dryomov complete_request(req, -ENOENT); 25994609245eSIlya Dryomov } 26004609245eSIlya Dryomov } else { 26014609245eSIlya Dryomov send_map_check(req); 26024609245eSIlya Dryomov } 26034609245eSIlya Dryomov } 26044609245eSIlya Dryomov 26054609245eSIlya Dryomov static void map_check_cb(struct ceph_mon_generic_request *greq) 26064609245eSIlya Dryomov { 26074609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 26084609245eSIlya Dryomov struct ceph_osd_request *req; 26094609245eSIlya Dryomov u64 tid = greq->private_data; 26104609245eSIlya Dryomov 26114609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 26124609245eSIlya Dryomov 26134609245eSIlya Dryomov down_write(&osdc->lock); 26144609245eSIlya Dryomov req = lookup_request_mc(&osdc->map_checks, tid); 26154609245eSIlya Dryomov if (!req) { 26164609245eSIlya Dryomov dout("%s tid %llu dne\n", __func__, tid); 26174609245eSIlya Dryomov goto out_unlock; 26184609245eSIlya Dryomov } 26194609245eSIlya Dryomov 26204609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, 26214609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, greq->u.newest); 26224609245eSIlya Dryomov if (!req->r_map_dne_bound) 26234609245eSIlya Dryomov req->r_map_dne_bound = greq->u.newest; 26244609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 26254609245eSIlya Dryomov check_pool_dne(req); 26264609245eSIlya Dryomov 26274609245eSIlya Dryomov ceph_osdc_put_request(req); 26284609245eSIlya Dryomov out_unlock: 26294609245eSIlya Dryomov up_write(&osdc->lock); 26304609245eSIlya Dryomov } 26314609245eSIlya Dryomov 26324609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req) 26334609245eSIlya Dryomov { 26344609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 26354609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 26364609245eSIlya Dryomov int ret; 26374609245eSIlya Dryomov 26384609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 26394609245eSIlya Dryomov 26404609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 26414609245eSIlya Dryomov if (lookup_req) { 26424609245eSIlya Dryomov WARN_ON(lookup_req != req); 26434609245eSIlya Dryomov return; 26444609245eSIlya Dryomov } 26454609245eSIlya Dryomov 26464609245eSIlya Dryomov ceph_osdc_get_request(req); 26474609245eSIlya Dryomov insert_request_mc(&osdc->map_checks, req); 26484609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 26494609245eSIlya Dryomov map_check_cb, req->r_tid); 26504609245eSIlya Dryomov WARN_ON(ret); 26514609245eSIlya Dryomov } 26524609245eSIlya Dryomov 26530bbfdfe8SIlya Dryomov /* 2654922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 2655922dab61SIlya Dryomov */ 2656922dab61SIlya Dryomov static void linger_release(struct kref *kref) 2657922dab61SIlya Dryomov { 2658922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2659922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 2660922dab61SIlya Dryomov 2661922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 2662922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 2663922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 2664922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 26654609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); 2666922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 2667b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lreq->pending_lworks)); 2668922dab61SIlya Dryomov WARN_ON(lreq->osd); 2669922dab61SIlya Dryomov 2670922dab61SIlya Dryomov if (lreq->reg_req) 2671922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 2672922dab61SIlya Dryomov if (lreq->ping_req) 2673922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 2674922dab61SIlya Dryomov target_destroy(&lreq->t); 2675922dab61SIlya Dryomov kfree(lreq); 2676922dab61SIlya Dryomov } 2677922dab61SIlya Dryomov 2678922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 2679922dab61SIlya Dryomov { 2680922dab61SIlya Dryomov if (lreq) 2681922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 2682922dab61SIlya Dryomov } 2683922dab61SIlya Dryomov 2684922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2685922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 2686922dab61SIlya Dryomov { 2687922dab61SIlya Dryomov kref_get(&lreq->kref); 2688922dab61SIlya Dryomov return lreq; 2689922dab61SIlya Dryomov } 2690922dab61SIlya Dryomov 2691922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2692922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 2693922dab61SIlya Dryomov { 2694922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2695922dab61SIlya Dryomov 2696922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 2697922dab61SIlya Dryomov if (!lreq) 2698922dab61SIlya Dryomov return NULL; 2699922dab61SIlya Dryomov 2700922dab61SIlya Dryomov kref_init(&lreq->kref); 2701922dab61SIlya Dryomov mutex_init(&lreq->lock); 2702922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 2703922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 27044609245eSIlya Dryomov RB_CLEAR_NODE(&lreq->mc_node); 2705922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 2706b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lreq->pending_lworks); 2707922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 270819079203SIlya Dryomov init_completion(&lreq->notify_finish_wait); 2709922dab61SIlya Dryomov 2710922dab61SIlya Dryomov lreq->osdc = osdc; 2711922dab61SIlya Dryomov target_init(&lreq->t); 2712922dab61SIlya Dryomov 2713922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 2714922dab61SIlya Dryomov return lreq; 2715922dab61SIlya Dryomov } 2716922dab61SIlya Dryomov 2717922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 2718922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 27194609245eSIlya Dryomov DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) 2720922dab61SIlya Dryomov 2721922dab61SIlya Dryomov /* 2722922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 2723922dab61SIlya Dryomov * 2724922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 2725922dab61SIlya Dryomov */ 2726922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 2727922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2728922dab61SIlya Dryomov { 2729922dab61SIlya Dryomov verify_osd_locked(osd); 2730922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 2731922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2732922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2733922dab61SIlya Dryomov 2734922dab61SIlya Dryomov if (!osd_homeless(osd)) 2735922dab61SIlya Dryomov __remove_osd_from_lru(osd); 2736922dab61SIlya Dryomov else 2737922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 2738922dab61SIlya Dryomov 2739922dab61SIlya Dryomov get_osd(osd); 2740922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 2741922dab61SIlya Dryomov lreq->osd = osd; 2742922dab61SIlya Dryomov } 2743922dab61SIlya Dryomov 2744922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 2745922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2746922dab61SIlya Dryomov { 2747922dab61SIlya Dryomov verify_osd_locked(osd); 2748922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 2749922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2750922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2751922dab61SIlya Dryomov 2752922dab61SIlya Dryomov lreq->osd = NULL; 2753922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 2754922dab61SIlya Dryomov put_osd(osd); 2755922dab61SIlya Dryomov 2756922dab61SIlya Dryomov if (!osd_homeless(osd)) 2757922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 2758922dab61SIlya Dryomov else 2759922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 2760922dab61SIlya Dryomov } 2761922dab61SIlya Dryomov 2762922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 2763922dab61SIlya Dryomov { 2764922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 2765922dab61SIlya Dryomov 2766922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 2767922dab61SIlya Dryomov } 2768922dab61SIlya Dryomov 2769922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 2770922dab61SIlya Dryomov { 2771922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2772922dab61SIlya Dryomov bool registered; 2773922dab61SIlya Dryomov 2774922dab61SIlya Dryomov down_read(&osdc->lock); 2775922dab61SIlya Dryomov registered = __linger_registered(lreq); 2776922dab61SIlya Dryomov up_read(&osdc->lock); 2777922dab61SIlya Dryomov 2778922dab61SIlya Dryomov return registered; 2779922dab61SIlya Dryomov } 2780922dab61SIlya Dryomov 2781922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 2782922dab61SIlya Dryomov { 2783922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2784922dab61SIlya Dryomov 2785922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2786922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 2787922dab61SIlya Dryomov 2788922dab61SIlya Dryomov linger_get(lreq); 2789922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 2790922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 2791922dab61SIlya Dryomov } 2792922dab61SIlya Dryomov 2793922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 2794922dab61SIlya Dryomov { 2795922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2796922dab61SIlya Dryomov 2797922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2798922dab61SIlya Dryomov 2799922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 2800922dab61SIlya Dryomov linger_put(lreq); 2801922dab61SIlya Dryomov } 2802922dab61SIlya Dryomov 2803922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 2804922dab61SIlya Dryomov { 2805922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2806922dab61SIlya Dryomov 2807922dab61SIlya Dryomov WARN_ON(!req->r_linger); 2808922dab61SIlya Dryomov cancel_request(req); 2809922dab61SIlya Dryomov linger_put(lreq); 2810922dab61SIlya Dryomov } 2811922dab61SIlya Dryomov 2812922dab61SIlya Dryomov struct linger_work { 2813922dab61SIlya Dryomov struct work_struct work; 2814922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2815b07d3c4bSIlya Dryomov struct list_head pending_item; 2816b07d3c4bSIlya Dryomov unsigned long queued_stamp; 2817922dab61SIlya Dryomov 2818922dab61SIlya Dryomov union { 2819922dab61SIlya Dryomov struct { 2820922dab61SIlya Dryomov u64 notify_id; 2821922dab61SIlya Dryomov u64 notifier_id; 2822922dab61SIlya Dryomov void *payload; /* points into @msg front */ 2823922dab61SIlya Dryomov size_t payload_len; 2824922dab61SIlya Dryomov 2825922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 2826922dab61SIlya Dryomov } notify; 2827922dab61SIlya Dryomov struct { 2828922dab61SIlya Dryomov int err; 2829922dab61SIlya Dryomov } error; 2830922dab61SIlya Dryomov }; 2831922dab61SIlya Dryomov }; 2832922dab61SIlya Dryomov 2833922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 2834922dab61SIlya Dryomov work_func_t workfn) 2835922dab61SIlya Dryomov { 2836922dab61SIlya Dryomov struct linger_work *lwork; 2837922dab61SIlya Dryomov 2838922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 2839922dab61SIlya Dryomov if (!lwork) 2840922dab61SIlya Dryomov return NULL; 2841922dab61SIlya Dryomov 2842922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 2843b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lwork->pending_item); 2844922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 2845922dab61SIlya Dryomov 2846922dab61SIlya Dryomov return lwork; 2847922dab61SIlya Dryomov } 2848922dab61SIlya Dryomov 2849922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 2850922dab61SIlya Dryomov { 2851922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2852922dab61SIlya Dryomov 2853b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 2854b07d3c4bSIlya Dryomov list_del(&lwork->pending_item); 2855b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 2856b07d3c4bSIlya Dryomov 2857922dab61SIlya Dryomov linger_put(lreq); 2858922dab61SIlya Dryomov kfree(lwork); 2859922dab61SIlya Dryomov } 2860922dab61SIlya Dryomov 2861922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 2862922dab61SIlya Dryomov { 2863922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2864922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2865922dab61SIlya Dryomov 2866922dab61SIlya Dryomov verify_lreq_locked(lreq); 2867b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lwork->pending_item)); 2868b07d3c4bSIlya Dryomov 2869b07d3c4bSIlya Dryomov lwork->queued_stamp = jiffies; 2870b07d3c4bSIlya Dryomov list_add_tail(&lwork->pending_item, &lreq->pending_lworks); 2871922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 2872922dab61SIlya Dryomov } 2873922dab61SIlya Dryomov 2874922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 2875922dab61SIlya Dryomov { 2876922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2877922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2878922dab61SIlya Dryomov 2879922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2880922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2881922dab61SIlya Dryomov goto out; 2882922dab61SIlya Dryomov } 2883922dab61SIlya Dryomov 288419079203SIlya Dryomov WARN_ON(!lreq->is_watch); 2885922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 2886922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 2887922dab61SIlya Dryomov lwork->notify.payload_len); 2888922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 2889922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 2890922dab61SIlya Dryomov lwork->notify.payload_len); 2891922dab61SIlya Dryomov 2892922dab61SIlya Dryomov out: 2893922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 2894922dab61SIlya Dryomov lwork_free(lwork); 2895922dab61SIlya Dryomov } 2896922dab61SIlya Dryomov 2897922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 2898922dab61SIlya Dryomov { 2899922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2900922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2901922dab61SIlya Dryomov 2902922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2903922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2904922dab61SIlya Dryomov goto out; 2905922dab61SIlya Dryomov } 2906922dab61SIlya Dryomov 2907922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 2908922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 2909922dab61SIlya Dryomov 2910922dab61SIlya Dryomov out: 2911922dab61SIlya Dryomov lwork_free(lwork); 2912922dab61SIlya Dryomov } 2913922dab61SIlya Dryomov 2914922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 2915922dab61SIlya Dryomov { 2916922dab61SIlya Dryomov struct linger_work *lwork; 2917922dab61SIlya Dryomov 2918922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 2919922dab61SIlya Dryomov if (!lwork) { 2920922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 2921922dab61SIlya Dryomov return; 2922922dab61SIlya Dryomov } 2923922dab61SIlya Dryomov 2924922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 2925922dab61SIlya Dryomov lwork_queue(lwork); 2926922dab61SIlya Dryomov } 2927922dab61SIlya Dryomov 2928922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 2929922dab61SIlya Dryomov int result) 2930922dab61SIlya Dryomov { 2931922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 2932922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 2933922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 2934922dab61SIlya Dryomov } 2935922dab61SIlya Dryomov } 2936922dab61SIlya Dryomov 2937922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 2938922dab61SIlya Dryomov { 2939922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2940922dab61SIlya Dryomov 2941922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2942922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 2943922dab61SIlya Dryomov lreq->linger_id, req->r_result); 2944922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 2945922dab61SIlya Dryomov lreq->committed = true; 2946922dab61SIlya Dryomov 294719079203SIlya Dryomov if (!lreq->is_watch) { 294819079203SIlya Dryomov struct ceph_osd_data *osd_data = 294919079203SIlya Dryomov osd_req_op_data(req, 0, notify, response_data); 295019079203SIlya Dryomov void *p = page_address(osd_data->pages[0]); 295119079203SIlya Dryomov 295219079203SIlya Dryomov WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || 295319079203SIlya Dryomov osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); 295419079203SIlya Dryomov 295519079203SIlya Dryomov /* make note of the notify_id */ 295619079203SIlya Dryomov if (req->r_ops[0].outdata_len >= sizeof(u64)) { 295719079203SIlya Dryomov lreq->notify_id = ceph_decode_64(&p); 295819079203SIlya Dryomov dout("lreq %p notify_id %llu\n", lreq, 295919079203SIlya Dryomov lreq->notify_id); 296019079203SIlya Dryomov } else { 296119079203SIlya Dryomov dout("lreq %p no notify_id\n", lreq); 296219079203SIlya Dryomov } 296319079203SIlya Dryomov } 296419079203SIlya Dryomov 2965922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2966922dab61SIlya Dryomov linger_put(lreq); 2967922dab61SIlya Dryomov } 2968922dab61SIlya Dryomov 2969922dab61SIlya Dryomov static int normalize_watch_error(int err) 2970922dab61SIlya Dryomov { 2971922dab61SIlya Dryomov /* 2972922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 2973922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 2974922dab61SIlya Dryomov * the delete appear the same to the user. 2975922dab61SIlya Dryomov */ 2976922dab61SIlya Dryomov if (err == -ENOENT) 2977922dab61SIlya Dryomov err = -ENOTCONN; 2978922dab61SIlya Dryomov 2979922dab61SIlya Dryomov return err; 2980922dab61SIlya Dryomov } 2981922dab61SIlya Dryomov 2982922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 2983922dab61SIlya Dryomov { 2984922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2985922dab61SIlya Dryomov 2986922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2987922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 2988922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 2989922dab61SIlya Dryomov if (req->r_result < 0) { 2990922dab61SIlya Dryomov if (!lreq->last_error) { 2991922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2992922dab61SIlya Dryomov queue_watch_error(lreq); 2993922dab61SIlya Dryomov } 2994922dab61SIlya Dryomov } 2995922dab61SIlya Dryomov 2996922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2997922dab61SIlya Dryomov linger_put(lreq); 2998922dab61SIlya Dryomov } 2999922dab61SIlya Dryomov 3000922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 3001922dab61SIlya Dryomov { 3002922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->reg_req; 3003922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 3004922dab61SIlya Dryomov 3005922dab61SIlya Dryomov verify_osdc_wrlocked(req->r_osdc); 3006922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 3007922dab61SIlya Dryomov 3008922dab61SIlya Dryomov if (req->r_osd) 3009922dab61SIlya Dryomov cancel_linger_request(req); 3010922dab61SIlya Dryomov 3011922dab61SIlya Dryomov request_reinit(req); 3012922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 3013922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 3014922dab61SIlya Dryomov req->r_flags = lreq->t.flags; 3015922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 3016922dab61SIlya Dryomov 3017922dab61SIlya Dryomov mutex_lock(&lreq->lock); 301819079203SIlya Dryomov if (lreq->is_watch && lreq->committed) { 3019922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 3020922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id); 3021922dab61SIlya Dryomov op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; 3022922dab61SIlya Dryomov op->watch.gen = ++lreq->register_gen; 3023922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 3024922dab61SIlya Dryomov op->watch.gen); 3025922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 3026922dab61SIlya Dryomov } else { 302719079203SIlya Dryomov if (!lreq->is_watch) 302819079203SIlya Dryomov lreq->notify_id = 0; 302919079203SIlya Dryomov else 3030922dab61SIlya Dryomov WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); 3031922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 3032922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 3033922dab61SIlya Dryomov } 3034922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3035922dab61SIlya Dryomov 3036922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 3037922dab61SIlya Dryomov req->r_linger = true; 3038922dab61SIlya Dryomov 3039922dab61SIlya Dryomov submit_request(req, true); 3040922dab61SIlya Dryomov } 3041922dab61SIlya Dryomov 3042922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 3043922dab61SIlya Dryomov { 3044922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 3045922dab61SIlya Dryomov 3046922dab61SIlya Dryomov mutex_lock(&lreq->lock); 3047922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 3048922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 3049922dab61SIlya Dryomov lreq->last_error); 3050922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 3051b07d3c4bSIlya Dryomov if (!req->r_result) { 3052b07d3c4bSIlya Dryomov lreq->watch_valid_thru = lreq->ping_sent; 3053b07d3c4bSIlya Dryomov } else if (!lreq->last_error) { 3054922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 3055922dab61SIlya Dryomov queue_watch_error(lreq); 3056922dab61SIlya Dryomov } 3057922dab61SIlya Dryomov } else { 3058922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 3059922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 3060922dab61SIlya Dryomov } 3061922dab61SIlya Dryomov 3062922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3063922dab61SIlya Dryomov linger_put(lreq); 3064922dab61SIlya Dryomov } 3065922dab61SIlya Dryomov 3066922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 3067922dab61SIlya Dryomov { 3068922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3069922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->ping_req; 3070922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 3071922dab61SIlya Dryomov 3072b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 3073922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 3074922dab61SIlya Dryomov return; 3075922dab61SIlya Dryomov } 3076922dab61SIlya Dryomov 3077922dab61SIlya Dryomov lreq->ping_sent = jiffies; 3078922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 3079922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 3080922dab61SIlya Dryomov lreq->register_gen); 3081922dab61SIlya Dryomov 3082922dab61SIlya Dryomov if (req->r_osd) 3083922dab61SIlya Dryomov cancel_linger_request(req); 3084922dab61SIlya Dryomov 3085922dab61SIlya Dryomov request_reinit(req); 3086922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 3087922dab61SIlya Dryomov 3088922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 3089922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id || 3090922dab61SIlya Dryomov op->watch.op != CEPH_OSD_WATCH_OP_PING); 3091922dab61SIlya Dryomov op->watch.gen = lreq->register_gen; 3092922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 3093922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 3094922dab61SIlya Dryomov req->r_linger = true; 3095922dab61SIlya Dryomov 3096922dab61SIlya Dryomov ceph_osdc_get_request(req); 3097922dab61SIlya Dryomov account_request(req); 3098922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 3099922dab61SIlya Dryomov link_request(lreq->osd, req); 3100922dab61SIlya Dryomov send_request(req); 3101922dab61SIlya Dryomov } 3102922dab61SIlya Dryomov 3103922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 3104922dab61SIlya Dryomov { 3105922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3106922dab61SIlya Dryomov struct ceph_osd *osd; 3107922dab61SIlya Dryomov 310881c65213SIlya Dryomov down_write(&osdc->lock); 310981c65213SIlya Dryomov linger_register(lreq); 311081c65213SIlya Dryomov if (lreq->is_watch) { 311181c65213SIlya Dryomov lreq->reg_req->r_ops[0].watch.cookie = lreq->linger_id; 311281c65213SIlya Dryomov lreq->ping_req->r_ops[0].watch.cookie = lreq->linger_id; 311381c65213SIlya Dryomov } else { 311481c65213SIlya Dryomov lreq->reg_req->r_ops[0].notify.cookie = lreq->linger_id; 311581c65213SIlya Dryomov } 311681c65213SIlya Dryomov 31178edf84baSIlya Dryomov calc_target(osdc, &lreq->t, false); 3118922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3119922dab61SIlya Dryomov link_linger(osd, lreq); 3120922dab61SIlya Dryomov 3121922dab61SIlya Dryomov send_linger(lreq); 312281c65213SIlya Dryomov up_write(&osdc->lock); 3123922dab61SIlya Dryomov } 3124922dab61SIlya Dryomov 31254609245eSIlya Dryomov static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) 31264609245eSIlya Dryomov { 31274609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 31284609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 31294609245eSIlya Dryomov 31304609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 31314609245eSIlya Dryomov 31324609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 31334609245eSIlya Dryomov lreq->linger_id); 31344609245eSIlya Dryomov if (!lookup_lreq) 31354609245eSIlya Dryomov return; 31364609245eSIlya Dryomov 31374609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 31384609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 31394609245eSIlya Dryomov linger_put(lreq); 31404609245eSIlya Dryomov } 31414609245eSIlya Dryomov 3142922dab61SIlya Dryomov /* 3143922dab61SIlya Dryomov * @lreq has to be both registered and linked. 3144922dab61SIlya Dryomov */ 3145922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 3146922dab61SIlya Dryomov { 314719079203SIlya Dryomov if (lreq->is_watch && lreq->ping_req->r_osd) 3148922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 3149922dab61SIlya Dryomov if (lreq->reg_req->r_osd) 3150922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 31514609245eSIlya Dryomov cancel_linger_map_check(lreq); 3152922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3153922dab61SIlya Dryomov linger_unregister(lreq); 3154922dab61SIlya Dryomov } 3155922dab61SIlya Dryomov 3156922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 3157922dab61SIlya Dryomov { 3158922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3159922dab61SIlya Dryomov 3160922dab61SIlya Dryomov down_write(&osdc->lock); 3161922dab61SIlya Dryomov if (__linger_registered(lreq)) 3162922dab61SIlya Dryomov __linger_cancel(lreq); 3163922dab61SIlya Dryomov up_write(&osdc->lock); 3164922dab61SIlya Dryomov } 3165922dab61SIlya Dryomov 31664609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq); 31674609245eSIlya Dryomov 31684609245eSIlya Dryomov static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) 31694609245eSIlya Dryomov { 31704609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 31714609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 31724609245eSIlya Dryomov 31734609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 31744609245eSIlya Dryomov WARN_ON(!map->epoch); 31754609245eSIlya Dryomov 31764609245eSIlya Dryomov if (lreq->register_gen) { 31774609245eSIlya Dryomov lreq->map_dne_bound = map->epoch; 31784609245eSIlya Dryomov dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, 31794609245eSIlya Dryomov lreq, lreq->linger_id); 31804609245eSIlya Dryomov } else { 31814609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", 31824609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 31834609245eSIlya Dryomov map->epoch); 31844609245eSIlya Dryomov } 31854609245eSIlya Dryomov 31864609245eSIlya Dryomov if (lreq->map_dne_bound) { 31874609245eSIlya Dryomov if (map->epoch >= lreq->map_dne_bound) { 31884609245eSIlya Dryomov /* we had a new enough map */ 31894609245eSIlya Dryomov pr_info("linger_id %llu pool does not exist\n", 31904609245eSIlya Dryomov lreq->linger_id); 31914609245eSIlya Dryomov linger_reg_commit_complete(lreq, -ENOENT); 31924609245eSIlya Dryomov __linger_cancel(lreq); 31934609245eSIlya Dryomov } 31944609245eSIlya Dryomov } else { 31954609245eSIlya Dryomov send_linger_map_check(lreq); 31964609245eSIlya Dryomov } 31974609245eSIlya Dryomov } 31984609245eSIlya Dryomov 31994609245eSIlya Dryomov static void linger_map_check_cb(struct ceph_mon_generic_request *greq) 32004609245eSIlya Dryomov { 32014609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 32024609245eSIlya Dryomov struct ceph_osd_linger_request *lreq; 32034609245eSIlya Dryomov u64 linger_id = greq->private_data; 32044609245eSIlya Dryomov 32054609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 32064609245eSIlya Dryomov 32074609245eSIlya Dryomov down_write(&osdc->lock); 32084609245eSIlya Dryomov lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); 32094609245eSIlya Dryomov if (!lreq) { 32104609245eSIlya Dryomov dout("%s linger_id %llu dne\n", __func__, linger_id); 32114609245eSIlya Dryomov goto out_unlock; 32124609245eSIlya Dryomov } 32134609245eSIlya Dryomov 32144609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", 32154609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 32164609245eSIlya Dryomov greq->u.newest); 32174609245eSIlya Dryomov if (!lreq->map_dne_bound) 32184609245eSIlya Dryomov lreq->map_dne_bound = greq->u.newest; 32194609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 32204609245eSIlya Dryomov check_linger_pool_dne(lreq); 32214609245eSIlya Dryomov 32224609245eSIlya Dryomov linger_put(lreq); 32234609245eSIlya Dryomov out_unlock: 32244609245eSIlya Dryomov up_write(&osdc->lock); 32254609245eSIlya Dryomov } 32264609245eSIlya Dryomov 32274609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq) 32284609245eSIlya Dryomov { 32294609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 32304609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 32314609245eSIlya Dryomov int ret; 32324609245eSIlya Dryomov 32334609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 32344609245eSIlya Dryomov 32354609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 32364609245eSIlya Dryomov lreq->linger_id); 32374609245eSIlya Dryomov if (lookup_lreq) { 32384609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 32394609245eSIlya Dryomov return; 32404609245eSIlya Dryomov } 32414609245eSIlya Dryomov 32424609245eSIlya Dryomov linger_get(lreq); 32434609245eSIlya Dryomov insert_linger_mc(&osdc->linger_map_checks, lreq); 32444609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 32454609245eSIlya Dryomov linger_map_check_cb, lreq->linger_id); 32464609245eSIlya Dryomov WARN_ON(ret); 32474609245eSIlya Dryomov } 32484609245eSIlya Dryomov 3249922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 3250922dab61SIlya Dryomov { 3251922dab61SIlya Dryomov int ret; 3252922dab61SIlya Dryomov 3253922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 3254922dab61SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); 3255922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 3256922dab61SIlya Dryomov } 3257922dab61SIlya Dryomov 325819079203SIlya Dryomov static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) 325919079203SIlya Dryomov { 326019079203SIlya Dryomov int ret; 326119079203SIlya Dryomov 326219079203SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 326319079203SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); 326419079203SIlya Dryomov return ret ?: lreq->notify_finish_error; 326519079203SIlya Dryomov } 326619079203SIlya Dryomov 3267922dab61SIlya Dryomov /* 3268fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 3269fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 3270fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 3271fbca9635SIlya Dryomov * reset is detected. 32723d14c5d2SYehuda Sadeh */ 32733d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 32743d14c5d2SYehuda Sadeh { 32753d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 32763d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 3277a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 32785aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 32797cc5e38fSIlya Dryomov unsigned long expiry_cutoff = jiffies - opts->osd_request_timeout; 32805aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 32815aea3dcdSIlya Dryomov struct rb_node *n, *p; 32823d14c5d2SYehuda Sadeh 32835aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 32845aea3dcdSIlya Dryomov down_write(&osdc->lock); 32853d14c5d2SYehuda Sadeh 32863d14c5d2SYehuda Sadeh /* 32873d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 32883d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 32893d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 32903d14c5d2SYehuda Sadeh */ 32915aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 32925aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 32935aea3dcdSIlya Dryomov bool found = false; 32943d14c5d2SYehuda Sadeh 32957cc5e38fSIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 32965aea3dcdSIlya Dryomov struct ceph_osd_request *req = 32975aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 32985aea3dcdSIlya Dryomov 32997cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 33007cc5e38fSIlya Dryomov 33015aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 33025aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 33035aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 33045aea3dcdSIlya Dryomov found = true; 33055aea3dcdSIlya Dryomov } 33067cc5e38fSIlya Dryomov if (opts->osd_request_timeout && 33077cc5e38fSIlya Dryomov time_before(req->r_start_stamp, expiry_cutoff)) { 33087cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 33097cc5e38fSIlya Dryomov req->r_tid, osd->o_osd); 33107cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 33117cc5e38fSIlya Dryomov } 33125aea3dcdSIlya Dryomov } 3313922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 3314922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3315922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 3316922dab61SIlya Dryomov 3317922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 3318922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 3319922dab61SIlya Dryomov found = true; 3320922dab61SIlya Dryomov 3321922dab61SIlya Dryomov mutex_lock(&lreq->lock); 332219079203SIlya Dryomov if (lreq->is_watch && lreq->committed && !lreq->last_error) 3323922dab61SIlya Dryomov send_linger_ping(lreq); 3324922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3325922dab61SIlya Dryomov } 33265aea3dcdSIlya Dryomov 33275aea3dcdSIlya Dryomov if (found) 33283d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 33293d14c5d2SYehuda Sadeh } 33305aea3dcdSIlya Dryomov 33317cc5e38fSIlya Dryomov if (opts->osd_request_timeout) { 33327cc5e38fSIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 33337cc5e38fSIlya Dryomov struct ceph_osd_request *req = 33347cc5e38fSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 33357cc5e38fSIlya Dryomov 33367cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 33377cc5e38fSIlya Dryomov 33387cc5e38fSIlya Dryomov if (time_before(req->r_start_stamp, expiry_cutoff)) { 33397cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 33407cc5e38fSIlya Dryomov req->r_tid, osdc->homeless_osd.o_osd); 33417cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 33427cc5e38fSIlya Dryomov } 33437cc5e38fSIlya Dryomov } 33447cc5e38fSIlya Dryomov } 33457cc5e38fSIlya Dryomov 33465aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 33475aea3dcdSIlya Dryomov maybe_request_map(osdc); 33485aea3dcdSIlya Dryomov 33493d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 33505aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 33515aea3dcdSIlya Dryomov struct ceph_osd, 33523d14c5d2SYehuda Sadeh o_keepalive_item); 33533d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 33543d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 33553d14c5d2SYehuda Sadeh } 33563d14c5d2SYehuda Sadeh 33575aea3dcdSIlya Dryomov up_write(&osdc->lock); 3358fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 3359fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 33603d14c5d2SYehuda Sadeh } 33613d14c5d2SYehuda Sadeh 33623d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 33633d14c5d2SYehuda Sadeh { 33643d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 33653d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 33663d14c5d2SYehuda Sadeh osds_timeout_work.work); 3367a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 336842a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 33693d14c5d2SYehuda Sadeh 337042a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 33715aea3dcdSIlya Dryomov down_write(&osdc->lock); 337242a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 337342a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 337442a2c09fSIlya Dryomov break; 337542a2c09fSIlya Dryomov 33765aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 3377922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 33785aea3dcdSIlya Dryomov close_osd(osd); 337942a2c09fSIlya Dryomov } 338042a2c09fSIlya Dryomov 33815aea3dcdSIlya Dryomov up_write(&osdc->lock); 33823d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 33833d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 33843d14c5d2SYehuda Sadeh } 33853d14c5d2SYehuda Sadeh 3386205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 3387205ee118SIlya Dryomov struct ceph_object_locator *oloc) 3388205ee118SIlya Dryomov { 3389205ee118SIlya Dryomov u8 struct_v, struct_cv; 3390205ee118SIlya Dryomov u32 len; 3391205ee118SIlya Dryomov void *struct_end; 3392205ee118SIlya Dryomov int ret = 0; 3393205ee118SIlya Dryomov 3394205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3395205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3396205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3397205ee118SIlya Dryomov if (struct_v < 3) { 3398205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 3399205ee118SIlya Dryomov struct_v, struct_cv); 3400205ee118SIlya Dryomov goto e_inval; 3401205ee118SIlya Dryomov } 3402205ee118SIlya Dryomov if (struct_cv > 6) { 3403205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 3404205ee118SIlya Dryomov struct_v, struct_cv); 3405205ee118SIlya Dryomov goto e_inval; 3406205ee118SIlya Dryomov } 3407205ee118SIlya Dryomov len = ceph_decode_32(p); 3408205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3409205ee118SIlya Dryomov struct_end = *p + len; 3410205ee118SIlya Dryomov 3411205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 3412205ee118SIlya Dryomov *p += 4; /* skip preferred */ 3413205ee118SIlya Dryomov 3414205ee118SIlya Dryomov len = ceph_decode_32(p); 3415205ee118SIlya Dryomov if (len > 0) { 3416205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 3417205ee118SIlya Dryomov goto e_inval; 3418205ee118SIlya Dryomov } 3419205ee118SIlya Dryomov 3420205ee118SIlya Dryomov if (struct_v >= 5) { 3421cd08e0a2SYan, Zheng bool changed = false; 3422cd08e0a2SYan, Zheng 3423205ee118SIlya Dryomov len = ceph_decode_32(p); 3424205ee118SIlya Dryomov if (len > 0) { 342530c156d9SYan, Zheng ceph_decode_need(p, end, len, e_inval); 3426cd08e0a2SYan, Zheng if (!oloc->pool_ns || 3427cd08e0a2SYan, Zheng ceph_compare_string(oloc->pool_ns, *p, len)) 3428cd08e0a2SYan, Zheng changed = true; 342930c156d9SYan, Zheng *p += len; 3430cd08e0a2SYan, Zheng } else { 3431cd08e0a2SYan, Zheng if (oloc->pool_ns) 3432cd08e0a2SYan, Zheng changed = true; 3433cd08e0a2SYan, Zheng } 3434cd08e0a2SYan, Zheng if (changed) { 3435cd08e0a2SYan, Zheng /* redirect changes namespace */ 3436cd08e0a2SYan, Zheng pr_warn("ceph_object_locator::nspace is changed\n"); 3437cd08e0a2SYan, Zheng goto e_inval; 3438205ee118SIlya Dryomov } 3439205ee118SIlya Dryomov } 3440205ee118SIlya Dryomov 3441205ee118SIlya Dryomov if (struct_v >= 6) { 3442205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 3443205ee118SIlya Dryomov if (hash != -1) { 3444205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 3445205ee118SIlya Dryomov goto e_inval; 3446205ee118SIlya Dryomov } 3447205ee118SIlya Dryomov } 3448205ee118SIlya Dryomov 3449205ee118SIlya Dryomov /* skip the rest */ 3450205ee118SIlya Dryomov *p = struct_end; 3451205ee118SIlya Dryomov out: 3452205ee118SIlya Dryomov return ret; 3453205ee118SIlya Dryomov 3454205ee118SIlya Dryomov e_inval: 3455205ee118SIlya Dryomov ret = -EINVAL; 3456205ee118SIlya Dryomov goto out; 3457205ee118SIlya Dryomov } 3458205ee118SIlya Dryomov 3459205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 3460205ee118SIlya Dryomov struct ceph_request_redirect *redir) 3461205ee118SIlya Dryomov { 3462205ee118SIlya Dryomov u8 struct_v, struct_cv; 3463205ee118SIlya Dryomov u32 len; 3464205ee118SIlya Dryomov void *struct_end; 3465205ee118SIlya Dryomov int ret; 3466205ee118SIlya Dryomov 3467205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3468205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3469205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3470205ee118SIlya Dryomov if (struct_cv > 1) { 3471205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 3472205ee118SIlya Dryomov struct_v, struct_cv); 3473205ee118SIlya Dryomov goto e_inval; 3474205ee118SIlya Dryomov } 3475205ee118SIlya Dryomov len = ceph_decode_32(p); 3476205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3477205ee118SIlya Dryomov struct_end = *p + len; 3478205ee118SIlya Dryomov 3479205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 3480205ee118SIlya Dryomov if (ret) 3481205ee118SIlya Dryomov goto out; 3482205ee118SIlya Dryomov 3483205ee118SIlya Dryomov len = ceph_decode_32(p); 3484205ee118SIlya Dryomov if (len > 0) { 3485205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 3486205ee118SIlya Dryomov goto e_inval; 3487205ee118SIlya Dryomov } 3488205ee118SIlya Dryomov 3489205ee118SIlya Dryomov /* skip the rest */ 3490205ee118SIlya Dryomov *p = struct_end; 3491205ee118SIlya Dryomov out: 3492205ee118SIlya Dryomov return ret; 3493205ee118SIlya Dryomov 3494205ee118SIlya Dryomov e_inval: 3495205ee118SIlya Dryomov ret = -EINVAL; 3496205ee118SIlya Dryomov goto out; 3497205ee118SIlya Dryomov } 3498205ee118SIlya Dryomov 3499fe5da05eSIlya Dryomov struct MOSDOpReply { 3500fe5da05eSIlya Dryomov struct ceph_pg pgid; 3501fe5da05eSIlya Dryomov u64 flags; 3502fe5da05eSIlya Dryomov int result; 3503fe5da05eSIlya Dryomov u32 epoch; 3504fe5da05eSIlya Dryomov int num_ops; 3505fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 3506fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 3507fe5da05eSIlya Dryomov int retry_attempt; 3508fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 3509fe5da05eSIlya Dryomov u64 user_version; 3510fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 3511fe5da05eSIlya Dryomov }; 351225845472SSage Weil 3513fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 35143d14c5d2SYehuda Sadeh { 3515fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 3516fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 3517fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 3518fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 3519b0b31a8fSIlya Dryomov u8 decode_redir; 3520fe5da05eSIlya Dryomov u32 len; 3521fe5da05eSIlya Dryomov int ret; 3522fe5da05eSIlya Dryomov int i; 35233d14c5d2SYehuda Sadeh 3524fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 3525fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 3526fe5da05eSIlya Dryomov p += len; /* skip oid */ 35271b83bef2SSage Weil 3528fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 3529fe5da05eSIlya Dryomov if (ret) 3530fe5da05eSIlya Dryomov return ret; 35311b83bef2SSage Weil 3532fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 3533fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 3534fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 3535fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 3536fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 3537fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 35381b83bef2SSage Weil 3539fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 3540fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 3541fe5da05eSIlya Dryomov goto e_inval; 35421b83bef2SSage Weil 3543fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 3544fe5da05eSIlya Dryomov e_inval); 3545fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 35461b83bef2SSage Weil struct ceph_osd_op *op = p; 35471b83bef2SSage Weil 3548fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 35491b83bef2SSage Weil p += sizeof(*op); 35501b83bef2SSage Weil } 3551fe5da05eSIlya Dryomov 3552fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 3553fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 3554fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 3555fe5da05eSIlya Dryomov 3556fe5da05eSIlya Dryomov if (version >= 5) { 3557fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 3558fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 3559fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 3560fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 3561fe5da05eSIlya Dryomov } else { 3562fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 3563fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 35641b83bef2SSage Weil } 35651b83bef2SSage Weil 3566fe5da05eSIlya Dryomov if (version >= 6) { 3567fe5da05eSIlya Dryomov if (version >= 7) 3568fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 3569b0b31a8fSIlya Dryomov else 3570b0b31a8fSIlya Dryomov decode_redir = 1; 3571b0b31a8fSIlya Dryomov } else { 3572b0b31a8fSIlya Dryomov decode_redir = 0; 3573b0b31a8fSIlya Dryomov } 3574b0b31a8fSIlya Dryomov 3575b0b31a8fSIlya Dryomov if (decode_redir) { 3576fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 3577fe5da05eSIlya Dryomov if (ret) 3578fe5da05eSIlya Dryomov return ret; 3579205ee118SIlya Dryomov } else { 3580fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 3581205ee118SIlya Dryomov } 3582205ee118SIlya Dryomov 3583fe5da05eSIlya Dryomov return 0; 3584205ee118SIlya Dryomov 3585fe5da05eSIlya Dryomov e_inval: 3586fe5da05eSIlya Dryomov return -EINVAL; 3587fe5da05eSIlya Dryomov } 3588fe5da05eSIlya Dryomov 3589fe5da05eSIlya Dryomov /* 3590b18b9550SIlya Dryomov * Handle MOSDOpReply. Set ->r_result and call the callback if it is 3591b18b9550SIlya Dryomov * specified. 3592fe5da05eSIlya Dryomov */ 35935aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 3594fe5da05eSIlya Dryomov { 35955aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 3596fe5da05eSIlya Dryomov struct ceph_osd_request *req; 3597fe5da05eSIlya Dryomov struct MOSDOpReply m; 3598fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 3599fe5da05eSIlya Dryomov u32 data_len = 0; 3600fe5da05eSIlya Dryomov int ret; 3601fe5da05eSIlya Dryomov int i; 3602fe5da05eSIlya Dryomov 3603fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 3604fe5da05eSIlya Dryomov 36055aea3dcdSIlya Dryomov down_read(&osdc->lock); 36065aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 36075aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 36085aea3dcdSIlya Dryomov goto out_unlock_osdc; 3609fe5da05eSIlya Dryomov } 36105aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 36115aea3dcdSIlya Dryomov 36125aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 36135aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 36145aea3dcdSIlya Dryomov if (!req) { 36155aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 36165aea3dcdSIlya Dryomov goto out_unlock_session; 36175aea3dcdSIlya Dryomov } 3618fe5da05eSIlya Dryomov 3619cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns; 3620fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 3621cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = NULL; 3622fe5da05eSIlya Dryomov if (ret) { 3623fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 3624fe5da05eSIlya Dryomov req->r_tid, ret); 3625fe5da05eSIlya Dryomov ceph_msg_dump(msg); 3626fe5da05eSIlya Dryomov goto fail_request; 3627fe5da05eSIlya Dryomov } 3628fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 3629fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 3630fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 3631fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 3632fe5da05eSIlya Dryomov 3633fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 3634fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 3635fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 3636fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 3637fe5da05eSIlya Dryomov req->r_attempts - 1); 36385aea3dcdSIlya Dryomov goto out_unlock_session; 3639fe5da05eSIlya Dryomov } 3640fe5da05eSIlya Dryomov } else { 3641fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 3642fe5da05eSIlya Dryomov } 3643fe5da05eSIlya Dryomov 3644fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 3645fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 3646fe5da05eSIlya Dryomov m.redirect.oloc.pool); 36475aea3dcdSIlya Dryomov unlink_request(osd, req); 36485aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 3649205ee118SIlya Dryomov 365030c156d9SYan, Zheng /* 365130c156d9SYan, Zheng * Not ceph_oloc_copy() - changing pool_ns is not 365230c156d9SYan, Zheng * supported. 365330c156d9SYan, Zheng */ 365430c156d9SYan, Zheng req->r_t.target_oloc.pool = m.redirect.oloc.pool; 3655890bd0f8SJerry Lee req->r_flags |= CEPH_OSD_FLAG_REDIRECTED | 3656890bd0f8SJerry Lee CEPH_OSD_FLAG_IGNORE_OVERLAY | 3657890bd0f8SJerry Lee CEPH_OSD_FLAG_IGNORE_CACHE; 36585aea3dcdSIlya Dryomov req->r_tid = 0; 36595aea3dcdSIlya Dryomov __submit_request(req, false); 36605aea3dcdSIlya Dryomov goto out_unlock_osdc; 3661205ee118SIlya Dryomov } 3662205ee118SIlya Dryomov 3663fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 3664fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 3665fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 3666fe5da05eSIlya Dryomov goto fail_request; 3667fe5da05eSIlya Dryomov } 3668fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 3669fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 3670fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 3671fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 3672fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 3673fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 3674fe5da05eSIlya Dryomov } 3675fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 3676fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 3677fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 3678fe5da05eSIlya Dryomov goto fail_request; 3679fe5da05eSIlya Dryomov } 3680b18b9550SIlya Dryomov dout("%s req %p tid %llu result %d data_len %u\n", __func__, 3681b18b9550SIlya Dryomov req, req->r_tid, m.result, data_len); 36823d14c5d2SYehuda Sadeh 3683b18b9550SIlya Dryomov /* 3684b18b9550SIlya Dryomov * Since we only ever request ONDISK, we should only ever get 3685b18b9550SIlya Dryomov * one (type of) reply back. 3686b18b9550SIlya Dryomov */ 3687b18b9550SIlya Dryomov WARN_ON(!(m.flags & CEPH_OSD_FLAG_ONDISK)); 3688fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 368945ee2c1dSIlya Dryomov finish_request(req); 36905aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 36915aea3dcdSIlya Dryomov up_read(&osdc->lock); 36923d14c5d2SYehuda Sadeh 3693fe5da05eSIlya Dryomov __complete_request(req); 36943d14c5d2SYehuda Sadeh return; 3695fe5da05eSIlya Dryomov 3696fe5da05eSIlya Dryomov fail_request: 36974609245eSIlya Dryomov complete_request(req, -EIO); 36985aea3dcdSIlya Dryomov out_unlock_session: 36995aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 37005aea3dcdSIlya Dryomov out_unlock_osdc: 37015aea3dcdSIlya Dryomov up_read(&osdc->lock); 37023d14c5d2SYehuda Sadeh } 37033d14c5d2SYehuda Sadeh 370442c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 370542c1b124SIlya Dryomov { 370642c1b124SIlya Dryomov struct rb_node *n; 370742c1b124SIlya Dryomov 370842c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 370942c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 371042c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 371142c1b124SIlya Dryomov 371242c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 371342c1b124SIlya Dryomov } 371442c1b124SIlya Dryomov } 371542c1b124SIlya Dryomov 37165aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 37173d14c5d2SYehuda Sadeh { 37185aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 37193d14c5d2SYehuda Sadeh 37205aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 37215aea3dcdSIlya Dryomov if (!pi) 37225aea3dcdSIlya Dryomov return false; 37233d14c5d2SYehuda Sadeh 37245aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 37253d14c5d2SYehuda Sadeh } 37263d14c5d2SYehuda Sadeh 3727922dab61SIlya Dryomov static enum calc_target_result 3728922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 3729922dab61SIlya Dryomov { 3730922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3731922dab61SIlya Dryomov enum calc_target_result ct_res; 3732922dab61SIlya Dryomov 37338edf84baSIlya Dryomov ct_res = calc_target(osdc, &lreq->t, true); 3734922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 3735922dab61SIlya Dryomov struct ceph_osd *osd; 3736922dab61SIlya Dryomov 3737922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3738922dab61SIlya Dryomov if (osd != lreq->osd) { 3739922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3740922dab61SIlya Dryomov link_linger(osd, lreq); 3741922dab61SIlya Dryomov } 3742922dab61SIlya Dryomov } 3743922dab61SIlya Dryomov 3744922dab61SIlya Dryomov return ct_res; 3745922dab61SIlya Dryomov } 3746922dab61SIlya Dryomov 37473d14c5d2SYehuda Sadeh /* 37485aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 37493d14c5d2SYehuda Sadeh */ 37505aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 37515aea3dcdSIlya Dryomov bool force_resend, 37525aea3dcdSIlya Dryomov bool cleared_full, 37535aea3dcdSIlya Dryomov bool check_pool_cleared_full, 37545aea3dcdSIlya Dryomov struct rb_root *need_resend, 37555aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 37563d14c5d2SYehuda Sadeh { 37575aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 37585aea3dcdSIlya Dryomov struct rb_node *n; 37595aea3dcdSIlya Dryomov bool force_resend_writes; 37603d14c5d2SYehuda Sadeh 3761922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 3762922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3763922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3764922dab61SIlya Dryomov enum calc_target_result ct_res; 3765922dab61SIlya Dryomov 3766922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 3767922dab61SIlya Dryomov 3768922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 3769922dab61SIlya Dryomov lreq->linger_id); 3770922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 3771922dab61SIlya Dryomov switch (ct_res) { 3772922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 3773922dab61SIlya Dryomov force_resend_writes = cleared_full || 3774922dab61SIlya Dryomov (check_pool_cleared_full && 3775922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 3776922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 3777922dab61SIlya Dryomov break; 3778922dab61SIlya Dryomov 3779922dab61SIlya Dryomov /* fall through */ 3780922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 37814609245eSIlya Dryomov cancel_linger_map_check(lreq); 3782922dab61SIlya Dryomov /* 3783922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 3784922dab61SIlya Dryomov * may have already added it to the list, since 3785922dab61SIlya Dryomov * it's not unlinked here. 3786922dab61SIlya Dryomov */ 3787922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 3788922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 3789922dab61SIlya Dryomov break; 3790922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 3791a10bcb19SIlya Dryomov list_del_init(&lreq->scan_item); 37924609245eSIlya Dryomov check_linger_pool_dne(lreq); 3793922dab61SIlya Dryomov break; 3794922dab61SIlya Dryomov } 3795922dab61SIlya Dryomov } 3796922dab61SIlya Dryomov 37975aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 37985aea3dcdSIlya Dryomov struct ceph_osd_request *req = 37995aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 38005aea3dcdSIlya Dryomov enum calc_target_result ct_res; 3801ab60b16dSAlex Elder 38024609245eSIlya Dryomov n = rb_next(n); /* unlink_request(), check_pool_dne() */ 3803ab60b16dSAlex Elder 38045aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 38058edf84baSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, false); 38065aea3dcdSIlya Dryomov switch (ct_res) { 38075aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 38085aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 38095aea3dcdSIlya Dryomov (check_pool_cleared_full && 38105aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 38115aea3dcdSIlya Dryomov if (!force_resend && 38125aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 38135aea3dcdSIlya Dryomov !force_resend_writes)) 38145aea3dcdSIlya Dryomov break; 3815a40c4f10SYehuda Sadeh 38165aea3dcdSIlya Dryomov /* fall through */ 38175aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 38184609245eSIlya Dryomov cancel_map_check(req); 38195aea3dcdSIlya Dryomov unlink_request(osd, req); 38205aea3dcdSIlya Dryomov insert_request(need_resend, req); 38215aea3dcdSIlya Dryomov break; 38225aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 38234609245eSIlya Dryomov check_pool_dne(req); 38245aea3dcdSIlya Dryomov break; 3825a40c4f10SYehuda Sadeh } 38263d14c5d2SYehuda Sadeh } 38273d14c5d2SYehuda Sadeh } 38286f6c7006SSage Weil 382942c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 38305aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 38315aea3dcdSIlya Dryomov struct rb_root *need_resend, 38325aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 383342c1b124SIlya Dryomov { 383442c1b124SIlya Dryomov struct ceph_osdmap *newmap; 383542c1b124SIlya Dryomov struct rb_node *n; 383642c1b124SIlya Dryomov bool skipped_map = false; 383742c1b124SIlya Dryomov bool was_full; 383842c1b124SIlya Dryomov 3839b7ec35b3SIlya Dryomov was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 384042c1b124SIlya Dryomov set_pool_was_full(osdc); 384142c1b124SIlya Dryomov 384242c1b124SIlya Dryomov if (incremental) 384342c1b124SIlya Dryomov newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); 384442c1b124SIlya Dryomov else 384542c1b124SIlya Dryomov newmap = ceph_osdmap_decode(&p, end); 384642c1b124SIlya Dryomov if (IS_ERR(newmap)) 384742c1b124SIlya Dryomov return PTR_ERR(newmap); 384842c1b124SIlya Dryomov 384942c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 385042c1b124SIlya Dryomov /* 385142c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 385242c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 385342c1b124SIlya Dryomov * should be false. 385442c1b124SIlya Dryomov */ 385542c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 385642c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 385742c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 385842c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 385942c1b124SIlya Dryomov 386042c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 386142c1b124SIlya Dryomov if (old_pi) 386242c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 386342c1b124SIlya Dryomov else 386442c1b124SIlya Dryomov WARN_ON(pi->was_full); 386542c1b124SIlya Dryomov } 386642c1b124SIlya Dryomov 386742c1b124SIlya Dryomov if (osdc->osdmap->epoch && 386842c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 386942c1b124SIlya Dryomov WARN_ON(incremental); 387042c1b124SIlya Dryomov skipped_map = true; 387142c1b124SIlya Dryomov } 387242c1b124SIlya Dryomov 387342c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 387442c1b124SIlya Dryomov osdc->osdmap = newmap; 387542c1b124SIlya Dryomov } 387642c1b124SIlya Dryomov 3877b7ec35b3SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 38785aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 38795aea3dcdSIlya Dryomov need_resend, need_resend_linger); 38805aea3dcdSIlya Dryomov 38815aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 38825aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 38835aea3dcdSIlya Dryomov 38845aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 38855aea3dcdSIlya Dryomov 38865aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 38875aea3dcdSIlya Dryomov need_resend_linger); 38885aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 38895aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 38905aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 38915aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 38925aea3dcdSIlya Dryomov close_osd(osd); 38935aea3dcdSIlya Dryomov } 389442c1b124SIlya Dryomov 389542c1b124SIlya Dryomov return 0; 389642c1b124SIlya Dryomov } 38976f6c7006SSage Weil 38985aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 38995aea3dcdSIlya Dryomov struct rb_root *need_resend, 39005aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 39015aea3dcdSIlya Dryomov { 3902922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 390304c7d789SIlya Dryomov enum calc_target_result ct_res; 39045aea3dcdSIlya Dryomov struct rb_node *n; 39055aea3dcdSIlya Dryomov 390604c7d789SIlya Dryomov /* make sure need_resend targets reflect latest map */ 390704c7d789SIlya Dryomov for (n = rb_first(need_resend); n; ) { 390804c7d789SIlya Dryomov struct ceph_osd_request *req = 390904c7d789SIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 391004c7d789SIlya Dryomov 391104c7d789SIlya Dryomov n = rb_next(n); 391204c7d789SIlya Dryomov 391304c7d789SIlya Dryomov if (req->r_t.epoch < osdc->osdmap->epoch) { 39148edf84baSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, false); 391504c7d789SIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) { 391604c7d789SIlya Dryomov erase_request(need_resend, req); 391704c7d789SIlya Dryomov check_pool_dne(req); 391804c7d789SIlya Dryomov } 391904c7d789SIlya Dryomov } 392004c7d789SIlya Dryomov } 392104c7d789SIlya Dryomov 39225aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 39235aea3dcdSIlya Dryomov struct ceph_osd_request *req = 39245aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 39255aea3dcdSIlya Dryomov struct ceph_osd *osd; 39265aea3dcdSIlya Dryomov 39275aea3dcdSIlya Dryomov n = rb_next(n); 39285aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 39295aea3dcdSIlya Dryomov 39305aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 39315aea3dcdSIlya Dryomov link_request(osd, req); 39325aea3dcdSIlya Dryomov if (!req->r_linger) { 39335aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 39345aea3dcdSIlya Dryomov send_request(req); 3935922dab61SIlya Dryomov } else { 3936922dab61SIlya Dryomov cancel_linger_request(req); 39375aea3dcdSIlya Dryomov } 39385aea3dcdSIlya Dryomov } 3939922dab61SIlya Dryomov 3940922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 3941922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 3942922dab61SIlya Dryomov send_linger(lreq); 3943922dab61SIlya Dryomov 3944922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 3945922dab61SIlya Dryomov } 39465aea3dcdSIlya Dryomov } 39475aea3dcdSIlya Dryomov 39483d14c5d2SYehuda Sadeh /* 39493d14c5d2SYehuda Sadeh * Process updated osd map. 39503d14c5d2SYehuda Sadeh * 39513d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 39523d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 39533d14c5d2SYehuda Sadeh * off to different OSDs as needed. 39543d14c5d2SYehuda Sadeh */ 39553d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 39563d14c5d2SYehuda Sadeh { 395742c1b124SIlya Dryomov void *p = msg->front.iov_base; 395842c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 39593d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 39603d14c5d2SYehuda Sadeh u32 epoch; 39613d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 39625aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 39635aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 396442c1b124SIlya Dryomov bool handled_incremental = false; 396542c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 396642c1b124SIlya Dryomov bool pauserd, pausewr; 396742c1b124SIlya Dryomov int err; 39683d14c5d2SYehuda Sadeh 396942c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 39705aea3dcdSIlya Dryomov down_write(&osdc->lock); 39713d14c5d2SYehuda Sadeh 39723d14c5d2SYehuda Sadeh /* verify fsid */ 39733d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 39743d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 39753d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 397642c1b124SIlya Dryomov goto bad; 39773d14c5d2SYehuda Sadeh 3978b7ec35b3SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3979b7ec35b3SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3980b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 398142c1b124SIlya Dryomov have_pool_full(osdc); 39829a1ea2dbSJosh Durgin 39833d14c5d2SYehuda Sadeh /* incremental maps */ 39843d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 39853d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 39863d14c5d2SYehuda Sadeh while (nr_maps > 0) { 39873d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 39883d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 39893d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 39903d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 399142c1b124SIlya Dryomov if (osdc->osdmap->epoch && 399242c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 39933d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 39943d14c5d2SYehuda Sadeh epoch, maplen); 39955aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 39965aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 399742c1b124SIlya Dryomov if (err) 39983d14c5d2SYehuda Sadeh goto bad; 399942c1b124SIlya Dryomov handled_incremental = true; 40003d14c5d2SYehuda Sadeh } else { 40013d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 40023d14c5d2SYehuda Sadeh epoch, maplen); 40033d14c5d2SYehuda Sadeh } 400442c1b124SIlya Dryomov p += maplen; 40053d14c5d2SYehuda Sadeh nr_maps--; 40063d14c5d2SYehuda Sadeh } 400742c1b124SIlya Dryomov if (handled_incremental) 40083d14c5d2SYehuda Sadeh goto done; 40093d14c5d2SYehuda Sadeh 40103d14c5d2SYehuda Sadeh /* full maps */ 40113d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 40123d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 40133d14c5d2SYehuda Sadeh while (nr_maps) { 40143d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 40153d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 40163d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 40173d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 40183d14c5d2SYehuda Sadeh if (nr_maps > 1) { 40193d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 40203d14c5d2SYehuda Sadeh epoch, maplen); 4021e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 40223d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 40233d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 40243d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 40253d14c5d2SYehuda Sadeh } else { 40263d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 40275aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 40285aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 402942c1b124SIlya Dryomov if (err) 40303d14c5d2SYehuda Sadeh goto bad; 40313d14c5d2SYehuda Sadeh } 40323d14c5d2SYehuda Sadeh p += maplen; 40333d14c5d2SYehuda Sadeh nr_maps--; 40343d14c5d2SYehuda Sadeh } 40353d14c5d2SYehuda Sadeh 40363d14c5d2SYehuda Sadeh done: 4037cd634fb6SSage Weil /* 4038cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 4039cd634fb6SSage Weil * we find out when we are no longer full and stop returning 4040cd634fb6SSage Weil * ENOSPC. 4041cd634fb6SSage Weil */ 4042b7ec35b3SIlya Dryomov pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 4043b7ec35b3SIlya Dryomov pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 4044b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 404542c1b124SIlya Dryomov have_pool_full(osdc); 404658eb7932SJeff Layton if (was_pauserd || was_pausewr || pauserd || pausewr || 404758eb7932SJeff Layton osdc->osdmap->epoch < osdc->epoch_barrier) 404842c1b124SIlya Dryomov maybe_request_map(osdc); 4049cd634fb6SSage Weil 40505aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 405142c1b124SIlya Dryomov 4052fc36d0a4SJeff Layton ceph_osdc_abort_on_full(osdc); 405342c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 405442c1b124SIlya Dryomov osdc->osdmap->epoch); 40555aea3dcdSIlya Dryomov up_write(&osdc->lock); 40563d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 40573d14c5d2SYehuda Sadeh return; 40583d14c5d2SYehuda Sadeh 40593d14c5d2SYehuda Sadeh bad: 40603d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 40613d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 40625aea3dcdSIlya Dryomov up_write(&osdc->lock); 40635aea3dcdSIlya Dryomov } 40645aea3dcdSIlya Dryomov 40655aea3dcdSIlya Dryomov /* 40665aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 40675aea3dcdSIlya Dryomov */ 40685aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 40695aea3dcdSIlya Dryomov { 40705aea3dcdSIlya Dryomov struct rb_node *n; 40715aea3dcdSIlya Dryomov 4072a02a946dSIlya Dryomov clear_backoffs(osd); 4073a02a946dSIlya Dryomov 4074922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 40755aea3dcdSIlya Dryomov struct ceph_osd_request *req = 40765aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 40775aea3dcdSIlya Dryomov 4078922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 4079922dab61SIlya Dryomov 40805aea3dcdSIlya Dryomov if (!req->r_linger) { 40815aea3dcdSIlya Dryomov if (!req->r_t.paused) 40825aea3dcdSIlya Dryomov send_request(req); 4083922dab61SIlya Dryomov } else { 4084922dab61SIlya Dryomov cancel_linger_request(req); 40855aea3dcdSIlya Dryomov } 40865aea3dcdSIlya Dryomov } 4087922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 4088922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 4089922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 4090922dab61SIlya Dryomov 4091922dab61SIlya Dryomov send_linger(lreq); 4092922dab61SIlya Dryomov } 40935aea3dcdSIlya Dryomov } 40945aea3dcdSIlya Dryomov 40955aea3dcdSIlya Dryomov /* 40965aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 40975aea3dcdSIlya Dryomov */ 40985aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 40995aea3dcdSIlya Dryomov { 41005aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 41015aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 41025aea3dcdSIlya Dryomov 41035aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 41045aea3dcdSIlya Dryomov 41055aea3dcdSIlya Dryomov down_write(&osdc->lock); 41065aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 41075aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 41085aea3dcdSIlya Dryomov goto out_unlock; 41095aea3dcdSIlya Dryomov } 41105aea3dcdSIlya Dryomov 41115aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 41125aea3dcdSIlya Dryomov kick_osd_requests(osd); 41135aea3dcdSIlya Dryomov maybe_request_map(osdc); 41145aea3dcdSIlya Dryomov 41155aea3dcdSIlya Dryomov out_unlock: 41165aea3dcdSIlya Dryomov up_write(&osdc->lock); 41173d14c5d2SYehuda Sadeh } 41183d14c5d2SYehuda Sadeh 4119a02a946dSIlya Dryomov struct MOSDBackoff { 4120a02a946dSIlya Dryomov struct ceph_spg spgid; 4121a02a946dSIlya Dryomov u32 map_epoch; 4122a02a946dSIlya Dryomov u8 op; 4123a02a946dSIlya Dryomov u64 id; 4124a02a946dSIlya Dryomov struct ceph_hobject_id *begin; 4125a02a946dSIlya Dryomov struct ceph_hobject_id *end; 4126a02a946dSIlya Dryomov }; 4127a02a946dSIlya Dryomov 4128a02a946dSIlya Dryomov static int decode_MOSDBackoff(const struct ceph_msg *msg, struct MOSDBackoff *m) 4129a02a946dSIlya Dryomov { 4130a02a946dSIlya Dryomov void *p = msg->front.iov_base; 4131a02a946dSIlya Dryomov void *const end = p + msg->front.iov_len; 4132a02a946dSIlya Dryomov u8 struct_v; 4133a02a946dSIlya Dryomov u32 struct_len; 4134a02a946dSIlya Dryomov int ret; 4135a02a946dSIlya Dryomov 4136a02a946dSIlya Dryomov ret = ceph_start_decoding(&p, end, 1, "spg_t", &struct_v, &struct_len); 4137a02a946dSIlya Dryomov if (ret) 4138a02a946dSIlya Dryomov return ret; 4139a02a946dSIlya Dryomov 4140a02a946dSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->spgid.pgid); 4141a02a946dSIlya Dryomov if (ret) 4142a02a946dSIlya Dryomov return ret; 4143a02a946dSIlya Dryomov 4144a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->spgid.shard, e_inval); 4145a02a946dSIlya Dryomov ceph_decode_32_safe(&p, end, m->map_epoch, e_inval); 4146a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->op, e_inval); 4147a02a946dSIlya Dryomov ceph_decode_64_safe(&p, end, m->id, e_inval); 4148a02a946dSIlya Dryomov 4149a02a946dSIlya Dryomov m->begin = kzalloc(sizeof(*m->begin), GFP_NOIO); 4150a02a946dSIlya Dryomov if (!m->begin) 4151a02a946dSIlya Dryomov return -ENOMEM; 4152a02a946dSIlya Dryomov 4153a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->begin); 4154a02a946dSIlya Dryomov if (ret) { 4155a02a946dSIlya Dryomov free_hoid(m->begin); 4156a02a946dSIlya Dryomov return ret; 4157a02a946dSIlya Dryomov } 4158a02a946dSIlya Dryomov 4159a02a946dSIlya Dryomov m->end = kzalloc(sizeof(*m->end), GFP_NOIO); 4160a02a946dSIlya Dryomov if (!m->end) { 4161a02a946dSIlya Dryomov free_hoid(m->begin); 4162a02a946dSIlya Dryomov return -ENOMEM; 4163a02a946dSIlya Dryomov } 4164a02a946dSIlya Dryomov 4165a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->end); 4166a02a946dSIlya Dryomov if (ret) { 4167a02a946dSIlya Dryomov free_hoid(m->begin); 4168a02a946dSIlya Dryomov free_hoid(m->end); 4169a02a946dSIlya Dryomov return ret; 4170a02a946dSIlya Dryomov } 4171a02a946dSIlya Dryomov 4172a02a946dSIlya Dryomov return 0; 4173a02a946dSIlya Dryomov 4174a02a946dSIlya Dryomov e_inval: 4175a02a946dSIlya Dryomov return -EINVAL; 4176a02a946dSIlya Dryomov } 4177a02a946dSIlya Dryomov 4178a02a946dSIlya Dryomov static struct ceph_msg *create_backoff_message( 4179a02a946dSIlya Dryomov const struct ceph_osd_backoff *backoff, 4180a02a946dSIlya Dryomov u32 map_epoch) 4181a02a946dSIlya Dryomov { 4182a02a946dSIlya Dryomov struct ceph_msg *msg; 4183a02a946dSIlya Dryomov void *p, *end; 4184a02a946dSIlya Dryomov int msg_size; 4185a02a946dSIlya Dryomov 4186a02a946dSIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 4187a02a946dSIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 4188a02a946dSIlya Dryomov msg_size += 4 + 1 + 8; /* map_epoch, op, id */ 4189a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4190a02a946dSIlya Dryomov hoid_encoding_size(backoff->begin); 4191a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4192a02a946dSIlya Dryomov hoid_encoding_size(backoff->end); 4193a02a946dSIlya Dryomov 4194a02a946dSIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_BACKOFF, msg_size, GFP_NOIO, true); 4195a02a946dSIlya Dryomov if (!msg) 4196a02a946dSIlya Dryomov return NULL; 4197a02a946dSIlya Dryomov 4198a02a946dSIlya Dryomov p = msg->front.iov_base; 4199a02a946dSIlya Dryomov end = p + msg->front_alloc_len; 4200a02a946dSIlya Dryomov 4201a02a946dSIlya Dryomov encode_spgid(&p, &backoff->spgid); 4202a02a946dSIlya Dryomov ceph_encode_32(&p, map_epoch); 4203a02a946dSIlya Dryomov ceph_encode_8(&p, CEPH_OSD_BACKOFF_OP_ACK_BLOCK); 4204a02a946dSIlya Dryomov ceph_encode_64(&p, backoff->id); 4205a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->begin); 4206a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->end); 4207a02a946dSIlya Dryomov BUG_ON(p != end); 4208a02a946dSIlya Dryomov 4209a02a946dSIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 4210a02a946dSIlya Dryomov msg->hdr.version = cpu_to_le16(1); /* MOSDBackoff v1 */ 4211a02a946dSIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 4212a02a946dSIlya Dryomov 4213a02a946dSIlya Dryomov return msg; 4214a02a946dSIlya Dryomov } 4215a02a946dSIlya Dryomov 4216a02a946dSIlya Dryomov static void handle_backoff_block(struct ceph_osd *osd, struct MOSDBackoff *m) 4217a02a946dSIlya Dryomov { 4218a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4219a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4220a02a946dSIlya Dryomov struct ceph_msg *msg; 4221a02a946dSIlya Dryomov 4222a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4223a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4224a02a946dSIlya Dryomov 4225a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &m->spgid); 4226a02a946dSIlya Dryomov if (!spg) { 4227a02a946dSIlya Dryomov spg = alloc_spg_mapping(); 4228a02a946dSIlya Dryomov if (!spg) { 4229a02a946dSIlya Dryomov pr_err("%s failed to allocate spg\n", __func__); 4230a02a946dSIlya Dryomov return; 4231a02a946dSIlya Dryomov } 4232a02a946dSIlya Dryomov spg->spgid = m->spgid; /* struct */ 4233a02a946dSIlya Dryomov insert_spg_mapping(&osd->o_backoff_mappings, spg); 4234a02a946dSIlya Dryomov } 4235a02a946dSIlya Dryomov 4236a02a946dSIlya Dryomov backoff = alloc_backoff(); 4237a02a946dSIlya Dryomov if (!backoff) { 4238a02a946dSIlya Dryomov pr_err("%s failed to allocate backoff\n", __func__); 4239a02a946dSIlya Dryomov return; 4240a02a946dSIlya Dryomov } 4241a02a946dSIlya Dryomov backoff->spgid = m->spgid; /* struct */ 4242a02a946dSIlya Dryomov backoff->id = m->id; 4243a02a946dSIlya Dryomov backoff->begin = m->begin; 4244a02a946dSIlya Dryomov m->begin = NULL; /* backoff now owns this */ 4245a02a946dSIlya Dryomov backoff->end = m->end; 4246a02a946dSIlya Dryomov m->end = NULL; /* ditto */ 4247a02a946dSIlya Dryomov 4248a02a946dSIlya Dryomov insert_backoff(&spg->backoffs, backoff); 4249a02a946dSIlya Dryomov insert_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4250a02a946dSIlya Dryomov 4251a02a946dSIlya Dryomov /* 4252a02a946dSIlya Dryomov * Ack with original backoff's epoch so that the OSD can 4253a02a946dSIlya Dryomov * discard this if there was a PG split. 4254a02a946dSIlya Dryomov */ 4255a02a946dSIlya Dryomov msg = create_backoff_message(backoff, m->map_epoch); 4256a02a946dSIlya Dryomov if (!msg) { 4257a02a946dSIlya Dryomov pr_err("%s failed to allocate msg\n", __func__); 4258a02a946dSIlya Dryomov return; 4259a02a946dSIlya Dryomov } 4260a02a946dSIlya Dryomov ceph_con_send(&osd->o_con, msg); 4261a02a946dSIlya Dryomov } 4262a02a946dSIlya Dryomov 4263a02a946dSIlya Dryomov static bool target_contained_by(const struct ceph_osd_request_target *t, 4264a02a946dSIlya Dryomov const struct ceph_hobject_id *begin, 4265a02a946dSIlya Dryomov const struct ceph_hobject_id *end) 4266a02a946dSIlya Dryomov { 4267a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 4268a02a946dSIlya Dryomov int cmp; 4269a02a946dSIlya Dryomov 4270a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, t); 4271a02a946dSIlya Dryomov cmp = hoid_compare(&hoid, begin); 4272a02a946dSIlya Dryomov return !cmp || (cmp > 0 && hoid_compare(&hoid, end) < 0); 4273a02a946dSIlya Dryomov } 4274a02a946dSIlya Dryomov 4275a02a946dSIlya Dryomov static void handle_backoff_unblock(struct ceph_osd *osd, 4276a02a946dSIlya Dryomov const struct MOSDBackoff *m) 4277a02a946dSIlya Dryomov { 4278a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4279a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4280a02a946dSIlya Dryomov struct rb_node *n; 4281a02a946dSIlya Dryomov 4282a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4283a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4284a02a946dSIlya Dryomov 4285a02a946dSIlya Dryomov backoff = lookup_backoff_by_id(&osd->o_backoffs_by_id, m->id); 4286a02a946dSIlya Dryomov if (!backoff) { 4287a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu backoff dne\n", 4288a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4289a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4290a02a946dSIlya Dryomov return; 4291a02a946dSIlya Dryomov } 4292a02a946dSIlya Dryomov 4293a02a946dSIlya Dryomov if (hoid_compare(backoff->begin, m->begin) && 4294a02a946dSIlya Dryomov hoid_compare(backoff->end, m->end)) { 4295a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu bad range?\n", 4296a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4297a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4298a02a946dSIlya Dryomov /* unblock it anyway... */ 4299a02a946dSIlya Dryomov } 4300a02a946dSIlya Dryomov 4301a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &backoff->spgid); 4302a02a946dSIlya Dryomov BUG_ON(!spg); 4303a02a946dSIlya Dryomov 4304a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 4305a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4306a02a946dSIlya Dryomov free_backoff(backoff); 4307a02a946dSIlya Dryomov 4308a02a946dSIlya Dryomov if (RB_EMPTY_ROOT(&spg->backoffs)) { 4309a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 4310a02a946dSIlya Dryomov free_spg_mapping(spg); 4311a02a946dSIlya Dryomov } 4312a02a946dSIlya Dryomov 4313a02a946dSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 4314a02a946dSIlya Dryomov struct ceph_osd_request *req = 4315a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 4316a02a946dSIlya Dryomov 4317a02a946dSIlya Dryomov if (!ceph_spg_compare(&req->r_t.spgid, &m->spgid)) { 4318a02a946dSIlya Dryomov /* 4319a02a946dSIlya Dryomov * Match against @m, not @backoff -- the PG may 4320a02a946dSIlya Dryomov * have split on the OSD. 4321a02a946dSIlya Dryomov */ 4322a02a946dSIlya Dryomov if (target_contained_by(&req->r_t, m->begin, m->end)) { 4323a02a946dSIlya Dryomov /* 4324a02a946dSIlya Dryomov * If no other installed backoff applies, 4325a02a946dSIlya Dryomov * resend. 4326a02a946dSIlya Dryomov */ 4327a02a946dSIlya Dryomov send_request(req); 4328a02a946dSIlya Dryomov } 4329a02a946dSIlya Dryomov } 4330a02a946dSIlya Dryomov } 4331a02a946dSIlya Dryomov } 4332a02a946dSIlya Dryomov 4333a02a946dSIlya Dryomov static void handle_backoff(struct ceph_osd *osd, struct ceph_msg *msg) 4334a02a946dSIlya Dryomov { 4335a02a946dSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 4336a02a946dSIlya Dryomov struct MOSDBackoff m; 4337a02a946dSIlya Dryomov int ret; 4338a02a946dSIlya Dryomov 4339a02a946dSIlya Dryomov down_read(&osdc->lock); 4340a02a946dSIlya Dryomov if (!osd_registered(osd)) { 4341a02a946dSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 4342a02a946dSIlya Dryomov up_read(&osdc->lock); 4343a02a946dSIlya Dryomov return; 4344a02a946dSIlya Dryomov } 4345a02a946dSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 4346a02a946dSIlya Dryomov 4347a02a946dSIlya Dryomov mutex_lock(&osd->lock); 4348a02a946dSIlya Dryomov ret = decode_MOSDBackoff(msg, &m); 4349a02a946dSIlya Dryomov if (ret) { 4350a02a946dSIlya Dryomov pr_err("failed to decode MOSDBackoff: %d\n", ret); 4351a02a946dSIlya Dryomov ceph_msg_dump(msg); 4352a02a946dSIlya Dryomov goto out_unlock; 4353a02a946dSIlya Dryomov } 4354a02a946dSIlya Dryomov 4355a02a946dSIlya Dryomov switch (m.op) { 4356a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_BLOCK: 4357a02a946dSIlya Dryomov handle_backoff_block(osd, &m); 4358a02a946dSIlya Dryomov break; 4359a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_UNBLOCK: 4360a02a946dSIlya Dryomov handle_backoff_unblock(osd, &m); 4361a02a946dSIlya Dryomov break; 4362a02a946dSIlya Dryomov default: 4363a02a946dSIlya Dryomov pr_err("%s osd%d unknown op %d\n", __func__, osd->o_osd, m.op); 4364a02a946dSIlya Dryomov } 4365a02a946dSIlya Dryomov 4366a02a946dSIlya Dryomov free_hoid(m.begin); 4367a02a946dSIlya Dryomov free_hoid(m.end); 4368a02a946dSIlya Dryomov 4369a02a946dSIlya Dryomov out_unlock: 4370a02a946dSIlya Dryomov mutex_unlock(&osd->lock); 4371a02a946dSIlya Dryomov up_read(&osdc->lock); 4372a02a946dSIlya Dryomov } 4373a02a946dSIlya Dryomov 43743d14c5d2SYehuda Sadeh /* 4375a40c4f10SYehuda Sadeh * Process osd watch notifications 4376a40c4f10SYehuda Sadeh */ 43773c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 43783c663bbdSAlex Elder struct ceph_msg *msg) 4379a40c4f10SYehuda Sadeh { 4380922dab61SIlya Dryomov void *p = msg->front.iov_base; 4381922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 4382922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4383922dab61SIlya Dryomov struct linger_work *lwork; 4384922dab61SIlya Dryomov u8 proto_ver, opcode; 4385922dab61SIlya Dryomov u64 cookie, notify_id; 4386922dab61SIlya Dryomov u64 notifier_id = 0; 438719079203SIlya Dryomov s32 return_code = 0; 4388922dab61SIlya Dryomov void *payload = NULL; 4389922dab61SIlya Dryomov u32 payload_len = 0; 4390a40c4f10SYehuda Sadeh 4391a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 4392a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 4393a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 4394922dab61SIlya Dryomov p += 8; /* skip ver */ 4395a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 4396a40c4f10SYehuda Sadeh 4397922dab61SIlya Dryomov if (proto_ver >= 1) { 4398922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 4399922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 4400922dab61SIlya Dryomov payload = p; 4401922dab61SIlya Dryomov p += payload_len; 4402a40c4f10SYehuda Sadeh } 4403a40c4f10SYehuda Sadeh 4404922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 440519079203SIlya Dryomov ceph_decode_32_safe(&p, end, return_code, bad); 4406922dab61SIlya Dryomov 4407922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 4408922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 4409922dab61SIlya Dryomov 4410922dab61SIlya Dryomov down_read(&osdc->lock); 4411922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 4412922dab61SIlya Dryomov if (!lreq) { 4413922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 4414922dab61SIlya Dryomov cookie); 4415922dab61SIlya Dryomov goto out_unlock_osdc; 4416922dab61SIlya Dryomov } 4417922dab61SIlya Dryomov 4418922dab61SIlya Dryomov mutex_lock(&lreq->lock); 441919079203SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, 442019079203SIlya Dryomov opcode, cookie, lreq, lreq->is_watch); 4421922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 4422922dab61SIlya Dryomov if (!lreq->last_error) { 4423922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 4424922dab61SIlya Dryomov queue_watch_error(lreq); 4425922dab61SIlya Dryomov } 442619079203SIlya Dryomov } else if (!lreq->is_watch) { 442719079203SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ 442819079203SIlya Dryomov if (lreq->notify_id && lreq->notify_id != notify_id) { 442919079203SIlya Dryomov dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, 443019079203SIlya Dryomov lreq->notify_id, notify_id); 443119079203SIlya Dryomov } else if (!completion_done(&lreq->notify_finish_wait)) { 443219079203SIlya Dryomov struct ceph_msg_data *data = 44330d9c1ab3SIlya Dryomov msg->num_data_items ? &msg->data[0] : NULL; 443419079203SIlya Dryomov 443519079203SIlya Dryomov if (data) { 443619079203SIlya Dryomov if (lreq->preply_pages) { 443719079203SIlya Dryomov WARN_ON(data->type != 443819079203SIlya Dryomov CEPH_MSG_DATA_PAGES); 443919079203SIlya Dryomov *lreq->preply_pages = data->pages; 444019079203SIlya Dryomov *lreq->preply_len = data->length; 4441e8862740SIlya Dryomov data->own_pages = false; 444219079203SIlya Dryomov } 444319079203SIlya Dryomov } 444419079203SIlya Dryomov lreq->notify_finish_error = return_code; 444519079203SIlya Dryomov complete_all(&lreq->notify_finish_wait); 444619079203SIlya Dryomov } 4447922dab61SIlya Dryomov } else { 4448922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 4449922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 4450922dab61SIlya Dryomov if (!lwork) { 4451922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 4452922dab61SIlya Dryomov goto out_unlock_lreq; 4453922dab61SIlya Dryomov } 4454922dab61SIlya Dryomov 4455922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 4456922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 4457922dab61SIlya Dryomov lwork->notify.payload = payload; 4458922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 4459922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 4460922dab61SIlya Dryomov lwork_queue(lwork); 4461922dab61SIlya Dryomov } 4462922dab61SIlya Dryomov 4463922dab61SIlya Dryomov out_unlock_lreq: 4464922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 4465922dab61SIlya Dryomov out_unlock_osdc: 4466922dab61SIlya Dryomov up_read(&osdc->lock); 4467a40c4f10SYehuda Sadeh return; 4468a40c4f10SYehuda Sadeh 4469a40c4f10SYehuda Sadeh bad: 4470a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 4471a40c4f10SYehuda Sadeh } 4472a40c4f10SYehuda Sadeh 4473a40c4f10SYehuda Sadeh /* 44743d14c5d2SYehuda Sadeh * Register request, send initial attempt. 44753d14c5d2SYehuda Sadeh */ 44763d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 44773d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 44783d14c5d2SYehuda Sadeh bool nofail) 44793d14c5d2SYehuda Sadeh { 44805aea3dcdSIlya Dryomov down_read(&osdc->lock); 44815aea3dcdSIlya Dryomov submit_request(req, false); 44825aea3dcdSIlya Dryomov up_read(&osdc->lock); 44833d14c5d2SYehuda Sadeh 44845aea3dcdSIlya Dryomov return 0; 44853d14c5d2SYehuda Sadeh } 44863d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 44873d14c5d2SYehuda Sadeh 44883d14c5d2SYehuda Sadeh /* 4489c297eb42SIlya Dryomov * Unregister a registered request. The request is not completed: 4490c297eb42SIlya Dryomov * ->r_result isn't set and __complete_request() isn't called. 4491c9f9b93dSIlya Dryomov */ 4492c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 4493c9f9b93dSIlya Dryomov { 4494c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 4495c9f9b93dSIlya Dryomov 44965aea3dcdSIlya Dryomov down_write(&osdc->lock); 44975aea3dcdSIlya Dryomov if (req->r_osd) 44985aea3dcdSIlya Dryomov cancel_request(req); 44995aea3dcdSIlya Dryomov up_write(&osdc->lock); 4500c9f9b93dSIlya Dryomov } 4501c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 4502c9f9b93dSIlya Dryomov 4503c9f9b93dSIlya Dryomov /* 450442b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 450542b06965SIlya Dryomov */ 450642b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 450742b06965SIlya Dryomov unsigned long timeout) 450842b06965SIlya Dryomov { 450942b06965SIlya Dryomov long left; 451042b06965SIlya Dryomov 451142b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 45120e76abf2SYan, Zheng left = wait_for_completion_killable_timeout(&req->r_completion, 451342b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 451442b06965SIlya Dryomov if (left <= 0) { 451542b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 451642b06965SIlya Dryomov ceph_osdc_cancel_request(req); 451742b06965SIlya Dryomov } else { 451842b06965SIlya Dryomov left = req->r_result; /* completed */ 451942b06965SIlya Dryomov } 452042b06965SIlya Dryomov 452142b06965SIlya Dryomov return left; 452242b06965SIlya Dryomov } 452342b06965SIlya Dryomov 452442b06965SIlya Dryomov /* 45253d14c5d2SYehuda Sadeh * wait for a request to complete 45263d14c5d2SYehuda Sadeh */ 45273d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 45283d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 45293d14c5d2SYehuda Sadeh { 453042b06965SIlya Dryomov return wait_request_timeout(req, 0); 45313d14c5d2SYehuda Sadeh } 45323d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 45333d14c5d2SYehuda Sadeh 45343d14c5d2SYehuda Sadeh /* 45353d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 45363d14c5d2SYehuda Sadeh */ 45373d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 45383d14c5d2SYehuda Sadeh { 45395aea3dcdSIlya Dryomov struct rb_node *n, *p; 45405aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 45413d14c5d2SYehuda Sadeh 45425aea3dcdSIlya Dryomov again: 45435aea3dcdSIlya Dryomov down_read(&osdc->lock); 45445aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 45455aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 45465aea3dcdSIlya Dryomov 45475aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 45485aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 45495aea3dcdSIlya Dryomov struct ceph_osd_request *req = 45505aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 45515aea3dcdSIlya Dryomov 45523d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 45533d14c5d2SYehuda Sadeh break; 45543d14c5d2SYehuda Sadeh 45555aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 45563d14c5d2SYehuda Sadeh continue; 45573d14c5d2SYehuda Sadeh 45583d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 45595aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 45605aea3dcdSIlya Dryomov up_read(&osdc->lock); 45615aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 45625aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 4563b18b9550SIlya Dryomov wait_for_completion(&req->r_completion); 45643d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 45655aea3dcdSIlya Dryomov goto again; 45663d14c5d2SYehuda Sadeh } 45675aea3dcdSIlya Dryomov 45685aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 45695aea3dcdSIlya Dryomov } 45705aea3dcdSIlya Dryomov 45715aea3dcdSIlya Dryomov up_read(&osdc->lock); 45725aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 45733d14c5d2SYehuda Sadeh } 45743d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 45753d14c5d2SYehuda Sadeh 4576922dab61SIlya Dryomov static struct ceph_osd_request * 4577922dab61SIlya Dryomov alloc_linger_request(struct ceph_osd_linger_request *lreq) 4578922dab61SIlya Dryomov { 4579922dab61SIlya Dryomov struct ceph_osd_request *req; 4580922dab61SIlya Dryomov 4581922dab61SIlya Dryomov req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); 4582922dab61SIlya Dryomov if (!req) 4583922dab61SIlya Dryomov return NULL; 4584922dab61SIlya Dryomov 4585922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4586922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 4587922dab61SIlya Dryomov return req; 4588922dab61SIlya Dryomov } 4589922dab61SIlya Dryomov 459039e58c34SIlya Dryomov static struct ceph_osd_request * 459139e58c34SIlya Dryomov alloc_watch_request(struct ceph_osd_linger_request *lreq, u8 watch_opcode) 459239e58c34SIlya Dryomov { 459339e58c34SIlya Dryomov struct ceph_osd_request *req; 459439e58c34SIlya Dryomov 459539e58c34SIlya Dryomov req = alloc_linger_request(lreq); 459639e58c34SIlya Dryomov if (!req) 459739e58c34SIlya Dryomov return NULL; 459839e58c34SIlya Dryomov 459939e58c34SIlya Dryomov /* 460039e58c34SIlya Dryomov * Pass 0 for cookie because we don't know it yet, it will be 460139e58c34SIlya Dryomov * filled in by linger_submit(). 460239e58c34SIlya Dryomov */ 460339e58c34SIlya Dryomov osd_req_op_watch_init(req, 0, 0, watch_opcode); 460426f887e0SIlya Dryomov 460526f887e0SIlya Dryomov if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { 460626f887e0SIlya Dryomov ceph_osdc_put_request(req); 460726f887e0SIlya Dryomov return NULL; 460826f887e0SIlya Dryomov } 460926f887e0SIlya Dryomov 461039e58c34SIlya Dryomov return req; 461139e58c34SIlya Dryomov } 461239e58c34SIlya Dryomov 4613922dab61SIlya Dryomov /* 4614922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 4615922dab61SIlya Dryomov */ 4616922dab61SIlya Dryomov struct ceph_osd_linger_request * 4617922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 4618922dab61SIlya Dryomov struct ceph_object_id *oid, 4619922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4620922dab61SIlya Dryomov rados_watchcb2_t wcb, 4621922dab61SIlya Dryomov rados_watcherrcb_t errcb, 4622922dab61SIlya Dryomov void *data) 4623922dab61SIlya Dryomov { 4624922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4625922dab61SIlya Dryomov int ret; 4626922dab61SIlya Dryomov 4627922dab61SIlya Dryomov lreq = linger_alloc(osdc); 4628922dab61SIlya Dryomov if (!lreq) 4629922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 4630922dab61SIlya Dryomov 463119079203SIlya Dryomov lreq->is_watch = true; 4632922dab61SIlya Dryomov lreq->wcb = wcb; 4633922dab61SIlya Dryomov lreq->errcb = errcb; 4634922dab61SIlya Dryomov lreq->data = data; 4635b07d3c4bSIlya Dryomov lreq->watch_valid_thru = jiffies; 4636922dab61SIlya Dryomov 4637922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 4638922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 463954ea0046SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE; 4640fac02ddfSArnd Bergmann ktime_get_real_ts64(&lreq->mtime); 4641922dab61SIlya Dryomov 464239e58c34SIlya Dryomov lreq->reg_req = alloc_watch_request(lreq, CEPH_OSD_WATCH_OP_WATCH); 4643922dab61SIlya Dryomov if (!lreq->reg_req) { 4644922dab61SIlya Dryomov ret = -ENOMEM; 4645922dab61SIlya Dryomov goto err_put_lreq; 4646922dab61SIlya Dryomov } 4647922dab61SIlya Dryomov 464839e58c34SIlya Dryomov lreq->ping_req = alloc_watch_request(lreq, CEPH_OSD_WATCH_OP_PING); 4649922dab61SIlya Dryomov if (!lreq->ping_req) { 4650922dab61SIlya Dryomov ret = -ENOMEM; 4651922dab61SIlya Dryomov goto err_put_lreq; 4652922dab61SIlya Dryomov } 4653922dab61SIlya Dryomov 465481c65213SIlya Dryomov linger_submit(lreq); 4655922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 4656922dab61SIlya Dryomov if (ret) { 4657922dab61SIlya Dryomov linger_cancel(lreq); 4658922dab61SIlya Dryomov goto err_put_lreq; 4659922dab61SIlya Dryomov } 4660922dab61SIlya Dryomov 4661922dab61SIlya Dryomov return lreq; 4662922dab61SIlya Dryomov 4663922dab61SIlya Dryomov err_put_lreq: 4664922dab61SIlya Dryomov linger_put(lreq); 4665922dab61SIlya Dryomov return ERR_PTR(ret); 4666922dab61SIlya Dryomov } 4667922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 4668922dab61SIlya Dryomov 4669922dab61SIlya Dryomov /* 4670922dab61SIlya Dryomov * Releases a ref. 4671922dab61SIlya Dryomov * 4672922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 4673922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 4674922dab61SIlya Dryomov * with mount_timeout"). 4675922dab61SIlya Dryomov */ 4676922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 4677922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 4678922dab61SIlya Dryomov { 4679922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 4680922dab61SIlya Dryomov struct ceph_osd_request *req; 4681922dab61SIlya Dryomov int ret; 4682922dab61SIlya Dryomov 4683922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4684922dab61SIlya Dryomov if (!req) 4685922dab61SIlya Dryomov return -ENOMEM; 4686922dab61SIlya Dryomov 4687922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4688922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 468954ea0046SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE; 4690fac02ddfSArnd Bergmann ktime_get_real_ts64(&req->r_mtime); 4691922dab61SIlya Dryomov osd_req_op_watch_init(req, 0, lreq->linger_id, 4692922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_UNWATCH); 4693922dab61SIlya Dryomov 4694922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4695922dab61SIlya Dryomov if (ret) 4696922dab61SIlya Dryomov goto out_put_req; 4697922dab61SIlya Dryomov 4698922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 4699922dab61SIlya Dryomov linger_cancel(lreq); 4700922dab61SIlya Dryomov linger_put(lreq); 4701922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 4702922dab61SIlya Dryomov 4703922dab61SIlya Dryomov out_put_req: 4704922dab61SIlya Dryomov ceph_osdc_put_request(req); 4705922dab61SIlya Dryomov return ret; 4706922dab61SIlya Dryomov } 4707922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 4708922dab61SIlya Dryomov 4709922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 4710922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 47116d54228fSIlya Dryomov u32 payload_len) 4712922dab61SIlya Dryomov { 4713922dab61SIlya Dryomov struct ceph_osd_req_op *op; 4714922dab61SIlya Dryomov struct ceph_pagelist *pl; 4715922dab61SIlya Dryomov int ret; 4716922dab61SIlya Dryomov 4717922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 4718922dab61SIlya Dryomov 471933165d47SIlya Dryomov pl = ceph_pagelist_alloc(GFP_NOIO); 4720922dab61SIlya Dryomov if (!pl) 4721922dab61SIlya Dryomov return -ENOMEM; 4722922dab61SIlya Dryomov 4723922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 4724922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 4725922dab61SIlya Dryomov if (payload) { 4726922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 4727922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 4728922dab61SIlya Dryomov } else { 4729922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 4730922dab61SIlya Dryomov } 4731922dab61SIlya Dryomov if (ret) { 4732922dab61SIlya Dryomov ceph_pagelist_release(pl); 4733922dab61SIlya Dryomov return -ENOMEM; 4734922dab61SIlya Dryomov } 4735922dab61SIlya Dryomov 4736922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 4737922dab61SIlya Dryomov op->indata_len = pl->length; 4738922dab61SIlya Dryomov return 0; 4739922dab61SIlya Dryomov } 4740922dab61SIlya Dryomov 4741922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 4742922dab61SIlya Dryomov struct ceph_object_id *oid, 4743922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4744922dab61SIlya Dryomov u64 notify_id, 4745922dab61SIlya Dryomov u64 cookie, 4746922dab61SIlya Dryomov void *payload, 47476d54228fSIlya Dryomov u32 payload_len) 4748922dab61SIlya Dryomov { 4749922dab61SIlya Dryomov struct ceph_osd_request *req; 4750922dab61SIlya Dryomov int ret; 4751922dab61SIlya Dryomov 4752922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4753922dab61SIlya Dryomov if (!req) 4754922dab61SIlya Dryomov return -ENOMEM; 4755922dab61SIlya Dryomov 4756922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 4757922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 4758922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 4759922dab61SIlya Dryomov 476026f887e0SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 476126f887e0SIlya Dryomov payload_len); 4762922dab61SIlya Dryomov if (ret) 4763922dab61SIlya Dryomov goto out_put_req; 4764922dab61SIlya Dryomov 476526f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4766922dab61SIlya Dryomov if (ret) 4767922dab61SIlya Dryomov goto out_put_req; 4768922dab61SIlya Dryomov 4769922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 4770922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 4771922dab61SIlya Dryomov 4772922dab61SIlya Dryomov out_put_req: 4773922dab61SIlya Dryomov ceph_osdc_put_request(req); 4774922dab61SIlya Dryomov return ret; 4775922dab61SIlya Dryomov } 4776922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 4777922dab61SIlya Dryomov 477819079203SIlya Dryomov static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, 477919079203SIlya Dryomov u64 cookie, u32 prot_ver, u32 timeout, 47806d54228fSIlya Dryomov void *payload, u32 payload_len) 478119079203SIlya Dryomov { 478219079203SIlya Dryomov struct ceph_osd_req_op *op; 478319079203SIlya Dryomov struct ceph_pagelist *pl; 478419079203SIlya Dryomov int ret; 478519079203SIlya Dryomov 478619079203SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); 478719079203SIlya Dryomov op->notify.cookie = cookie; 478819079203SIlya Dryomov 478933165d47SIlya Dryomov pl = ceph_pagelist_alloc(GFP_NOIO); 479019079203SIlya Dryomov if (!pl) 479119079203SIlya Dryomov return -ENOMEM; 479219079203SIlya Dryomov 479319079203SIlya Dryomov ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ 479419079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, timeout); 479519079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 479619079203SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 479719079203SIlya Dryomov if (ret) { 479819079203SIlya Dryomov ceph_pagelist_release(pl); 479919079203SIlya Dryomov return -ENOMEM; 480019079203SIlya Dryomov } 480119079203SIlya Dryomov 480219079203SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify.request_data, pl); 480319079203SIlya Dryomov op->indata_len = pl->length; 480419079203SIlya Dryomov return 0; 480519079203SIlya Dryomov } 480619079203SIlya Dryomov 480719079203SIlya Dryomov /* 480819079203SIlya Dryomov * @timeout: in seconds 480919079203SIlya Dryomov * 481019079203SIlya Dryomov * @preply_{pages,len} are initialized both on success and error. 481119079203SIlya Dryomov * The caller is responsible for: 481219079203SIlya Dryomov * 481319079203SIlya Dryomov * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) 481419079203SIlya Dryomov */ 481519079203SIlya Dryomov int ceph_osdc_notify(struct ceph_osd_client *osdc, 481619079203SIlya Dryomov struct ceph_object_id *oid, 481719079203SIlya Dryomov struct ceph_object_locator *oloc, 481819079203SIlya Dryomov void *payload, 48196d54228fSIlya Dryomov u32 payload_len, 482019079203SIlya Dryomov u32 timeout, 482119079203SIlya Dryomov struct page ***preply_pages, 482219079203SIlya Dryomov size_t *preply_len) 482319079203SIlya Dryomov { 482419079203SIlya Dryomov struct ceph_osd_linger_request *lreq; 482519079203SIlya Dryomov struct page **pages; 482619079203SIlya Dryomov int ret; 482719079203SIlya Dryomov 482819079203SIlya Dryomov WARN_ON(!timeout); 482919079203SIlya Dryomov if (preply_pages) { 483019079203SIlya Dryomov *preply_pages = NULL; 483119079203SIlya Dryomov *preply_len = 0; 483219079203SIlya Dryomov } 483319079203SIlya Dryomov 483419079203SIlya Dryomov lreq = linger_alloc(osdc); 483519079203SIlya Dryomov if (!lreq) 483619079203SIlya Dryomov return -ENOMEM; 483719079203SIlya Dryomov 483819079203SIlya Dryomov lreq->preply_pages = preply_pages; 483919079203SIlya Dryomov lreq->preply_len = preply_len; 484019079203SIlya Dryomov 484119079203SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 484219079203SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 484319079203SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_READ; 484419079203SIlya Dryomov 484519079203SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 484619079203SIlya Dryomov if (!lreq->reg_req) { 484719079203SIlya Dryomov ret = -ENOMEM; 484819079203SIlya Dryomov goto out_put_lreq; 484919079203SIlya Dryomov } 485019079203SIlya Dryomov 485181c65213SIlya Dryomov /* 485281c65213SIlya Dryomov * Pass 0 for cookie because we don't know it yet, it will be 485381c65213SIlya Dryomov * filled in by linger_submit(). 485481c65213SIlya Dryomov */ 485581c65213SIlya Dryomov ret = osd_req_op_notify_init(lreq->reg_req, 0, 0, 1, timeout, 485681c65213SIlya Dryomov payload, payload_len); 485781c65213SIlya Dryomov if (ret) 485881c65213SIlya Dryomov goto out_put_lreq; 485981c65213SIlya Dryomov 486019079203SIlya Dryomov /* for notify_id */ 486119079203SIlya Dryomov pages = ceph_alloc_page_vector(1, GFP_NOIO); 486219079203SIlya Dryomov if (IS_ERR(pages)) { 486319079203SIlya Dryomov ret = PTR_ERR(pages); 486419079203SIlya Dryomov goto out_put_lreq; 486519079203SIlya Dryomov } 486619079203SIlya Dryomov ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, 486719079203SIlya Dryomov response_data), 486819079203SIlya Dryomov pages, PAGE_SIZE, 0, false, true); 486919079203SIlya Dryomov 487026f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(lreq->reg_req, GFP_NOIO); 487126f887e0SIlya Dryomov if (ret) 487226f887e0SIlya Dryomov goto out_put_lreq; 487326f887e0SIlya Dryomov 487481c65213SIlya Dryomov linger_submit(lreq); 487519079203SIlya Dryomov ret = linger_reg_commit_wait(lreq); 487619079203SIlya Dryomov if (!ret) 487719079203SIlya Dryomov ret = linger_notify_finish_wait(lreq); 487819079203SIlya Dryomov else 487919079203SIlya Dryomov dout("lreq %p failed to initiate notify %d\n", lreq, ret); 488019079203SIlya Dryomov 488119079203SIlya Dryomov linger_cancel(lreq); 488219079203SIlya Dryomov out_put_lreq: 488319079203SIlya Dryomov linger_put(lreq); 488419079203SIlya Dryomov return ret; 488519079203SIlya Dryomov } 488619079203SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify); 488719079203SIlya Dryomov 48883d14c5d2SYehuda Sadeh /* 4889b07d3c4bSIlya Dryomov * Return the number of milliseconds since the watch was last 4890b07d3c4bSIlya Dryomov * confirmed, or an error. If there is an error, the watch is no 4891b07d3c4bSIlya Dryomov * longer valid, and should be destroyed with ceph_osdc_unwatch(). 4892b07d3c4bSIlya Dryomov */ 4893b07d3c4bSIlya Dryomov int ceph_osdc_watch_check(struct ceph_osd_client *osdc, 4894b07d3c4bSIlya Dryomov struct ceph_osd_linger_request *lreq) 4895b07d3c4bSIlya Dryomov { 4896b07d3c4bSIlya Dryomov unsigned long stamp, age; 4897b07d3c4bSIlya Dryomov int ret; 4898b07d3c4bSIlya Dryomov 4899b07d3c4bSIlya Dryomov down_read(&osdc->lock); 4900b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 4901b07d3c4bSIlya Dryomov stamp = lreq->watch_valid_thru; 4902b07d3c4bSIlya Dryomov if (!list_empty(&lreq->pending_lworks)) { 4903b07d3c4bSIlya Dryomov struct linger_work *lwork = 4904b07d3c4bSIlya Dryomov list_first_entry(&lreq->pending_lworks, 4905b07d3c4bSIlya Dryomov struct linger_work, 4906b07d3c4bSIlya Dryomov pending_item); 4907b07d3c4bSIlya Dryomov 4908b07d3c4bSIlya Dryomov if (time_before(lwork->queued_stamp, stamp)) 4909b07d3c4bSIlya Dryomov stamp = lwork->queued_stamp; 4910b07d3c4bSIlya Dryomov } 4911b07d3c4bSIlya Dryomov age = jiffies - stamp; 4912b07d3c4bSIlya Dryomov dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, 4913b07d3c4bSIlya Dryomov lreq, lreq->linger_id, age, lreq->last_error); 4914b07d3c4bSIlya Dryomov /* we are truncating to msecs, so return a safe upper bound */ 4915b07d3c4bSIlya Dryomov ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); 4916b07d3c4bSIlya Dryomov 4917b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 4918b07d3c4bSIlya Dryomov up_read(&osdc->lock); 4919b07d3c4bSIlya Dryomov return ret; 4920b07d3c4bSIlya Dryomov } 4921b07d3c4bSIlya Dryomov 4922a4ed38d7SDouglas Fuller static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) 4923a4ed38d7SDouglas Fuller { 4924a4ed38d7SDouglas Fuller u8 struct_v; 4925a4ed38d7SDouglas Fuller u32 struct_len; 4926a4ed38d7SDouglas Fuller int ret; 4927a4ed38d7SDouglas Fuller 4928a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 2, "watch_item_t", 4929a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4930a4ed38d7SDouglas Fuller if (ret) 493151fc7ab4SJeff Layton goto bad; 4932a4ed38d7SDouglas Fuller 493351fc7ab4SJeff Layton ret = -EINVAL; 493451fc7ab4SJeff Layton ceph_decode_copy_safe(p, end, &item->name, sizeof(item->name), bad); 493551fc7ab4SJeff Layton ceph_decode_64_safe(p, end, item->cookie, bad); 493651fc7ab4SJeff Layton ceph_decode_skip_32(p, end, bad); /* skip timeout seconds */ 493751fc7ab4SJeff Layton 4938a4ed38d7SDouglas Fuller if (struct_v >= 2) { 493951fc7ab4SJeff Layton ret = ceph_decode_entity_addr(p, end, &item->addr); 494051fc7ab4SJeff Layton if (ret) 494151fc7ab4SJeff Layton goto bad; 494251fc7ab4SJeff Layton } else { 494351fc7ab4SJeff Layton ret = 0; 4944a4ed38d7SDouglas Fuller } 4945a4ed38d7SDouglas Fuller 4946a4ed38d7SDouglas Fuller dout("%s %s%llu cookie %llu addr %s\n", __func__, 4947a4ed38d7SDouglas Fuller ENTITY_NAME(item->name), item->cookie, 4948b726ec97SJeff Layton ceph_pr_addr(&item->addr)); 494951fc7ab4SJeff Layton bad: 495051fc7ab4SJeff Layton return ret; 4951a4ed38d7SDouglas Fuller } 4952a4ed38d7SDouglas Fuller 4953a4ed38d7SDouglas Fuller static int decode_watchers(void **p, void *end, 4954a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4955a4ed38d7SDouglas Fuller u32 *num_watchers) 4956a4ed38d7SDouglas Fuller { 4957a4ed38d7SDouglas Fuller u8 struct_v; 4958a4ed38d7SDouglas Fuller u32 struct_len; 4959a4ed38d7SDouglas Fuller int i; 4960a4ed38d7SDouglas Fuller int ret; 4961a4ed38d7SDouglas Fuller 4962a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t", 4963a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4964a4ed38d7SDouglas Fuller if (ret) 4965a4ed38d7SDouglas Fuller return ret; 4966a4ed38d7SDouglas Fuller 4967a4ed38d7SDouglas Fuller *num_watchers = ceph_decode_32(p); 4968a4ed38d7SDouglas Fuller *watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO); 4969a4ed38d7SDouglas Fuller if (!*watchers) 4970a4ed38d7SDouglas Fuller return -ENOMEM; 4971a4ed38d7SDouglas Fuller 4972a4ed38d7SDouglas Fuller for (i = 0; i < *num_watchers; i++) { 4973a4ed38d7SDouglas Fuller ret = decode_watcher(p, end, *watchers + i); 4974a4ed38d7SDouglas Fuller if (ret) { 4975a4ed38d7SDouglas Fuller kfree(*watchers); 4976a4ed38d7SDouglas Fuller return ret; 4977a4ed38d7SDouglas Fuller } 4978a4ed38d7SDouglas Fuller } 4979a4ed38d7SDouglas Fuller 4980a4ed38d7SDouglas Fuller return 0; 4981a4ed38d7SDouglas Fuller } 4982a4ed38d7SDouglas Fuller 4983a4ed38d7SDouglas Fuller /* 4984a4ed38d7SDouglas Fuller * On success, the caller is responsible for: 4985a4ed38d7SDouglas Fuller * 4986a4ed38d7SDouglas Fuller * kfree(watchers); 4987a4ed38d7SDouglas Fuller */ 4988a4ed38d7SDouglas Fuller int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, 4989a4ed38d7SDouglas Fuller struct ceph_object_id *oid, 4990a4ed38d7SDouglas Fuller struct ceph_object_locator *oloc, 4991a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4992a4ed38d7SDouglas Fuller u32 *num_watchers) 4993a4ed38d7SDouglas Fuller { 4994a4ed38d7SDouglas Fuller struct ceph_osd_request *req; 4995a4ed38d7SDouglas Fuller struct page **pages; 4996a4ed38d7SDouglas Fuller int ret; 4997a4ed38d7SDouglas Fuller 4998a4ed38d7SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4999a4ed38d7SDouglas Fuller if (!req) 5000a4ed38d7SDouglas Fuller return -ENOMEM; 5001a4ed38d7SDouglas Fuller 5002a4ed38d7SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 5003a4ed38d7SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 5004a4ed38d7SDouglas Fuller req->r_flags = CEPH_OSD_FLAG_READ; 5005a4ed38d7SDouglas Fuller 5006a4ed38d7SDouglas Fuller pages = ceph_alloc_page_vector(1, GFP_NOIO); 5007a4ed38d7SDouglas Fuller if (IS_ERR(pages)) { 5008a4ed38d7SDouglas Fuller ret = PTR_ERR(pages); 5009a4ed38d7SDouglas Fuller goto out_put_req; 5010a4ed38d7SDouglas Fuller } 5011a4ed38d7SDouglas Fuller 5012a4ed38d7SDouglas Fuller osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0); 5013a4ed38d7SDouglas Fuller ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers, 5014a4ed38d7SDouglas Fuller response_data), 5015a4ed38d7SDouglas Fuller pages, PAGE_SIZE, 0, false, true); 5016a4ed38d7SDouglas Fuller 501726f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 501826f887e0SIlya Dryomov if (ret) 501926f887e0SIlya Dryomov goto out_put_req; 502026f887e0SIlya Dryomov 5021a4ed38d7SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 5022a4ed38d7SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 5023a4ed38d7SDouglas Fuller if (ret >= 0) { 5024a4ed38d7SDouglas Fuller void *p = page_address(pages[0]); 5025a4ed38d7SDouglas Fuller void *const end = p + req->r_ops[0].outdata_len; 5026a4ed38d7SDouglas Fuller 5027a4ed38d7SDouglas Fuller ret = decode_watchers(&p, end, watchers, num_watchers); 5028a4ed38d7SDouglas Fuller } 5029a4ed38d7SDouglas Fuller 5030a4ed38d7SDouglas Fuller out_put_req: 5031a4ed38d7SDouglas Fuller ceph_osdc_put_request(req); 5032a4ed38d7SDouglas Fuller return ret; 5033a4ed38d7SDouglas Fuller } 5034a4ed38d7SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_list_watchers); 5035a4ed38d7SDouglas Fuller 5036b07d3c4bSIlya Dryomov /* 5037dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 5038dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 5039dd935f44SJosh Durgin */ 5040f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 5041dd935f44SJosh Durgin { 504299d16943SIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 5043dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 5044dd935f44SJosh Durgin } 5045dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 5046dd935f44SJosh Durgin 50477cca78c9SIlya Dryomov void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) 50487cca78c9SIlya Dryomov { 50497cca78c9SIlya Dryomov down_read(&osdc->lock); 50507cca78c9SIlya Dryomov maybe_request_map(osdc); 50517cca78c9SIlya Dryomov up_read(&osdc->lock); 50527cca78c9SIlya Dryomov } 50537cca78c9SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_maybe_request_map); 5054dd935f44SJosh Durgin 5055dd935f44SJosh Durgin /* 5056428a7158SDouglas Fuller * Execute an OSD class method on an object. 5057428a7158SDouglas Fuller * 5058428a7158SDouglas Fuller * @flags: CEPH_OSD_FLAG_* 50592544a020SIlya Dryomov * @resp_len: in/out param for reply length 5060428a7158SDouglas Fuller */ 5061428a7158SDouglas Fuller int ceph_osdc_call(struct ceph_osd_client *osdc, 5062428a7158SDouglas Fuller struct ceph_object_id *oid, 5063428a7158SDouglas Fuller struct ceph_object_locator *oloc, 5064428a7158SDouglas Fuller const char *class, const char *method, 5065428a7158SDouglas Fuller unsigned int flags, 5066428a7158SDouglas Fuller struct page *req_page, size_t req_len, 506768ada915SIlya Dryomov struct page **resp_pages, size_t *resp_len) 5068428a7158SDouglas Fuller { 5069428a7158SDouglas Fuller struct ceph_osd_request *req; 5070428a7158SDouglas Fuller int ret; 5071428a7158SDouglas Fuller 507268ada915SIlya Dryomov if (req_len > PAGE_SIZE) 50732544a020SIlya Dryomov return -E2BIG; 50742544a020SIlya Dryomov 5075428a7158SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 5076428a7158SDouglas Fuller if (!req) 5077428a7158SDouglas Fuller return -ENOMEM; 5078428a7158SDouglas Fuller 5079428a7158SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 5080428a7158SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 5081428a7158SDouglas Fuller req->r_flags = flags; 5082428a7158SDouglas Fuller 508324639ce5SIlya Dryomov ret = osd_req_op_cls_init(req, 0, class, method); 5084fe943d50SChengguang Xu if (ret) 5085fe943d50SChengguang Xu goto out_put_req; 5086fe943d50SChengguang Xu 5087428a7158SDouglas Fuller if (req_page) 5088428a7158SDouglas Fuller osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len, 5089428a7158SDouglas Fuller 0, false, false); 509068ada915SIlya Dryomov if (resp_pages) 509168ada915SIlya Dryomov osd_req_op_cls_response_data_pages(req, 0, resp_pages, 50922544a020SIlya Dryomov *resp_len, 0, false, false); 5093428a7158SDouglas Fuller 509426f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 509526f887e0SIlya Dryomov if (ret) 509626f887e0SIlya Dryomov goto out_put_req; 509726f887e0SIlya Dryomov 5098428a7158SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 5099428a7158SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 5100428a7158SDouglas Fuller if (ret >= 0) { 5101428a7158SDouglas Fuller ret = req->r_ops[0].rval; 510268ada915SIlya Dryomov if (resp_pages) 5103428a7158SDouglas Fuller *resp_len = req->r_ops[0].outdata_len; 5104428a7158SDouglas Fuller } 5105428a7158SDouglas Fuller 5106428a7158SDouglas Fuller out_put_req: 5107428a7158SDouglas Fuller ceph_osdc_put_request(req); 5108428a7158SDouglas Fuller return ret; 5109428a7158SDouglas Fuller } 5110428a7158SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_call); 5111428a7158SDouglas Fuller 5112428a7158SDouglas Fuller /* 5113120a75eaSYan, Zheng * reset all osd connections 5114120a75eaSYan, Zheng */ 5115120a75eaSYan, Zheng void ceph_osdc_reopen_osds(struct ceph_osd_client *osdc) 5116120a75eaSYan, Zheng { 5117120a75eaSYan, Zheng struct rb_node *n; 5118120a75eaSYan, Zheng 5119120a75eaSYan, Zheng down_write(&osdc->lock); 5120120a75eaSYan, Zheng for (n = rb_first(&osdc->osds); n; ) { 5121120a75eaSYan, Zheng struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 5122120a75eaSYan, Zheng 5123120a75eaSYan, Zheng n = rb_next(n); 5124120a75eaSYan, Zheng if (!reopen_osd(osd)) 5125120a75eaSYan, Zheng kick_osd_requests(osd); 5126120a75eaSYan, Zheng } 5127120a75eaSYan, Zheng up_write(&osdc->lock); 5128120a75eaSYan, Zheng } 5129120a75eaSYan, Zheng 5130120a75eaSYan, Zheng /* 51313d14c5d2SYehuda Sadeh * init, shutdown 51323d14c5d2SYehuda Sadeh */ 51333d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 51343d14c5d2SYehuda Sadeh { 51353d14c5d2SYehuda Sadeh int err; 51363d14c5d2SYehuda Sadeh 51373d14c5d2SYehuda Sadeh dout("init\n"); 51383d14c5d2SYehuda Sadeh osdc->client = client; 51395aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 51403d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 51413d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 51429dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 51435aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 51445aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 51455aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 5146264048afSIlya Dryomov osdc->last_linger_id = CEPH_LINGER_ID_START; 5147922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 51484609245eSIlya Dryomov osdc->map_checks = RB_ROOT; 51494609245eSIlya Dryomov osdc->linger_map_checks = RB_ROOT; 51503d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 51513d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 51523d14c5d2SYehuda Sadeh 51533d14c5d2SYehuda Sadeh err = -ENOMEM; 5154e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 5155e5253a7bSIlya Dryomov if (!osdc->osdmap) 5156e5253a7bSIlya Dryomov goto out; 5157e5253a7bSIlya Dryomov 51589e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 51599e767adbSIlya Dryomov ceph_osd_request_cache); 51603d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 5161e5253a7bSIlya Dryomov goto out_map; 51623d14c5d2SYehuda Sadeh 5163d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 51640d9c1ab3SIlya Dryomov PAGE_SIZE, CEPH_OSD_SLAB_OPS, 10, "osd_op"); 51653d14c5d2SYehuda Sadeh if (err < 0) 51663d14c5d2SYehuda Sadeh goto out_mempool; 5167d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 51680d9c1ab3SIlya Dryomov PAGE_SIZE, CEPH_OSD_SLAB_OPS, 10, 51690d9c1ab3SIlya Dryomov "osd_op_reply"); 51703d14c5d2SYehuda Sadeh if (err < 0) 51713d14c5d2SYehuda Sadeh goto out_msgpool; 5172a40c4f10SYehuda Sadeh 5173dbcae088SDan Carpenter err = -ENOMEM; 5174a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 5175dbcae088SDan Carpenter if (!osdc->notify_wq) 5176c172ec5cSIlya Dryomov goto out_msgpool_reply; 5177c172ec5cSIlya Dryomov 517888bc1922SIlya Dryomov osdc->completion_wq = create_singlethread_workqueue("ceph-completion"); 517988bc1922SIlya Dryomov if (!osdc->completion_wq) 518088bc1922SIlya Dryomov goto out_notify_wq; 518188bc1922SIlya Dryomov 5182fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 5183fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 5184b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 5185b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 5186b37ee1b9SIlya Dryomov 51873d14c5d2SYehuda Sadeh return 0; 51883d14c5d2SYehuda Sadeh 518988bc1922SIlya Dryomov out_notify_wq: 519088bc1922SIlya Dryomov destroy_workqueue(osdc->notify_wq); 5191c172ec5cSIlya Dryomov out_msgpool_reply: 5192c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 51933d14c5d2SYehuda Sadeh out_msgpool: 51943d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 51953d14c5d2SYehuda Sadeh out_mempool: 51963d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 5197e5253a7bSIlya Dryomov out_map: 5198e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 51993d14c5d2SYehuda Sadeh out: 52003d14c5d2SYehuda Sadeh return err; 52013d14c5d2SYehuda Sadeh } 52023d14c5d2SYehuda Sadeh 52033d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 52043d14c5d2SYehuda Sadeh { 520588bc1922SIlya Dryomov destroy_workqueue(osdc->completion_wq); 5206a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 52073d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 52083d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 520942a2c09fSIlya Dryomov 52105aea3dcdSIlya Dryomov down_write(&osdc->lock); 521142a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 521242a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 521342a2c09fSIlya Dryomov struct ceph_osd, o_node); 52145aea3dcdSIlya Dryomov close_osd(osd); 521542a2c09fSIlya Dryomov } 52165aea3dcdSIlya Dryomov up_write(&osdc->lock); 521702113a0fSElena Reshetova WARN_ON(refcount_read(&osdc->homeless_osd.o_ref) != 1); 52185aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 52195aea3dcdSIlya Dryomov 52205aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 5221922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 52224609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); 52234609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); 52245aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 52255aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 522642a2c09fSIlya Dryomov 52273d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 52283d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 52293d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 52303d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 52313d14c5d2SYehuda Sadeh } 52323d14c5d2SYehuda Sadeh 523323ddf9beSLuis Henriques static int osd_req_op_copy_from_init(struct ceph_osd_request *req, 523423ddf9beSLuis Henriques u64 src_snapid, u64 src_version, 523523ddf9beSLuis Henriques struct ceph_object_id *src_oid, 523623ddf9beSLuis Henriques struct ceph_object_locator *src_oloc, 523723ddf9beSLuis Henriques u32 src_fadvise_flags, 523823ddf9beSLuis Henriques u32 dst_fadvise_flags, 523978beb0ffSLuis Henriques u32 truncate_seq, u64 truncate_size, 524023ddf9beSLuis Henriques u8 copy_from_flags) 524123ddf9beSLuis Henriques { 524223ddf9beSLuis Henriques struct ceph_osd_req_op *op; 524323ddf9beSLuis Henriques struct page **pages; 524423ddf9beSLuis Henriques void *p, *end; 524523ddf9beSLuis Henriques 524623ddf9beSLuis Henriques pages = ceph_alloc_page_vector(1, GFP_KERNEL); 524723ddf9beSLuis Henriques if (IS_ERR(pages)) 524823ddf9beSLuis Henriques return PTR_ERR(pages); 524923ddf9beSLuis Henriques 525078beb0ffSLuis Henriques op = _osd_req_op_init(req, 0, CEPH_OSD_OP_COPY_FROM2, 525178beb0ffSLuis Henriques dst_fadvise_flags); 525223ddf9beSLuis Henriques op->copy_from.snapid = src_snapid; 525323ddf9beSLuis Henriques op->copy_from.src_version = src_version; 525423ddf9beSLuis Henriques op->copy_from.flags = copy_from_flags; 525523ddf9beSLuis Henriques op->copy_from.src_fadvise_flags = src_fadvise_flags; 525623ddf9beSLuis Henriques 525723ddf9beSLuis Henriques p = page_address(pages[0]); 525823ddf9beSLuis Henriques end = p + PAGE_SIZE; 525923ddf9beSLuis Henriques ceph_encode_string(&p, end, src_oid->name, src_oid->name_len); 526023ddf9beSLuis Henriques encode_oloc(&p, end, src_oloc); 526178beb0ffSLuis Henriques ceph_encode_32(&p, truncate_seq); 526278beb0ffSLuis Henriques ceph_encode_64(&p, truncate_size); 526323ddf9beSLuis Henriques op->indata_len = PAGE_SIZE - (end - p); 526423ddf9beSLuis Henriques 526523ddf9beSLuis Henriques ceph_osd_data_pages_init(&op->copy_from.osd_data, pages, 526623ddf9beSLuis Henriques op->indata_len, 0, false, true); 526723ddf9beSLuis Henriques return 0; 526823ddf9beSLuis Henriques } 526923ddf9beSLuis Henriques 527023ddf9beSLuis Henriques int ceph_osdc_copy_from(struct ceph_osd_client *osdc, 527123ddf9beSLuis Henriques u64 src_snapid, u64 src_version, 527223ddf9beSLuis Henriques struct ceph_object_id *src_oid, 527323ddf9beSLuis Henriques struct ceph_object_locator *src_oloc, 527423ddf9beSLuis Henriques u32 src_fadvise_flags, 527523ddf9beSLuis Henriques struct ceph_object_id *dst_oid, 527623ddf9beSLuis Henriques struct ceph_object_locator *dst_oloc, 527723ddf9beSLuis Henriques u32 dst_fadvise_flags, 527878beb0ffSLuis Henriques u32 truncate_seq, u64 truncate_size, 527923ddf9beSLuis Henriques u8 copy_from_flags) 528023ddf9beSLuis Henriques { 528123ddf9beSLuis Henriques struct ceph_osd_request *req; 528223ddf9beSLuis Henriques int ret; 528323ddf9beSLuis Henriques 528423ddf9beSLuis Henriques req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_KERNEL); 528523ddf9beSLuis Henriques if (!req) 528623ddf9beSLuis Henriques return -ENOMEM; 528723ddf9beSLuis Henriques 528823ddf9beSLuis Henriques req->r_flags = CEPH_OSD_FLAG_WRITE; 528923ddf9beSLuis Henriques 529023ddf9beSLuis Henriques ceph_oloc_copy(&req->r_t.base_oloc, dst_oloc); 529123ddf9beSLuis Henriques ceph_oid_copy(&req->r_t.base_oid, dst_oid); 529223ddf9beSLuis Henriques 529323ddf9beSLuis Henriques ret = osd_req_op_copy_from_init(req, src_snapid, src_version, src_oid, 529423ddf9beSLuis Henriques src_oloc, src_fadvise_flags, 529578beb0ffSLuis Henriques dst_fadvise_flags, truncate_seq, 529678beb0ffSLuis Henriques truncate_size, copy_from_flags); 529723ddf9beSLuis Henriques if (ret) 529823ddf9beSLuis Henriques goto out; 529923ddf9beSLuis Henriques 530023ddf9beSLuis Henriques ret = ceph_osdc_alloc_messages(req, GFP_KERNEL); 530123ddf9beSLuis Henriques if (ret) 530223ddf9beSLuis Henriques goto out; 530323ddf9beSLuis Henriques 530423ddf9beSLuis Henriques ceph_osdc_start_request(osdc, req, false); 530523ddf9beSLuis Henriques ret = ceph_osdc_wait_request(osdc, req); 530623ddf9beSLuis Henriques 530723ddf9beSLuis Henriques out: 530823ddf9beSLuis Henriques ceph_osdc_put_request(req); 530923ddf9beSLuis Henriques return ret; 531023ddf9beSLuis Henriques } 531123ddf9beSLuis Henriques EXPORT_SYMBOL(ceph_osdc_copy_from); 531223ddf9beSLuis Henriques 531357a35dfbSChengguang Xu int __init ceph_osdc_setup(void) 53145522ae0bSAlex Elder { 53153f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 53163f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 53173f1af42aSIlya Dryomov 53185522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 53193f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 53203f1af42aSIlya Dryomov 0, 0, NULL); 53215522ae0bSAlex Elder 53225522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 53235522ae0bSAlex Elder } 53245522ae0bSAlex Elder 53255522ae0bSAlex Elder void ceph_osdc_cleanup(void) 53265522ae0bSAlex Elder { 53275522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 53285522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 53295522ae0bSAlex Elder ceph_osd_request_cache = NULL; 53305522ae0bSAlex Elder } 53315522ae0bSAlex Elder 53323d14c5d2SYehuda Sadeh /* 53333d14c5d2SYehuda Sadeh * handle incoming message 53343d14c5d2SYehuda Sadeh */ 53353d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 53363d14c5d2SYehuda Sadeh { 53373d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 53385aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 53393d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 53403d14c5d2SYehuda Sadeh 53413d14c5d2SYehuda Sadeh switch (type) { 53423d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 53433d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 53443d14c5d2SYehuda Sadeh break; 53453d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 53465aea3dcdSIlya Dryomov handle_reply(osd, msg); 53473d14c5d2SYehuda Sadeh break; 5348a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5349a02a946dSIlya Dryomov handle_backoff(osd, msg); 5350a02a946dSIlya Dryomov break; 5351a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 5352a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 5353a40c4f10SYehuda Sadeh break; 53543d14c5d2SYehuda Sadeh 53553d14c5d2SYehuda Sadeh default: 53563d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 53573d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 53583d14c5d2SYehuda Sadeh } 53595aea3dcdSIlya Dryomov 53603d14c5d2SYehuda Sadeh ceph_msg_put(msg); 53613d14c5d2SYehuda Sadeh } 53623d14c5d2SYehuda Sadeh 53633d14c5d2SYehuda Sadeh /* 5364d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 5365d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 5366d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 53673d14c5d2SYehuda Sadeh */ 53683d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 53693d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 53703d14c5d2SYehuda Sadeh int *skip) 53713d14c5d2SYehuda Sadeh { 53723d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 53733d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 53745aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 53753d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 53763f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 53773d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 53785aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 53793d14c5d2SYehuda Sadeh 53805aea3dcdSIlya Dryomov down_read(&osdc->lock); 53815aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 53825aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 53835aea3dcdSIlya Dryomov *skip = 1; 53845aea3dcdSIlya Dryomov goto out_unlock_osdc; 53855aea3dcdSIlya Dryomov } 53865aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 53875aea3dcdSIlya Dryomov 53885aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 53895aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 53903d14c5d2SYehuda Sadeh if (!req) { 5391cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 5392cd8140c6SIlya Dryomov osd->o_osd, tid); 5393d15f9d69SIlya Dryomov *skip = 1; 53945aea3dcdSIlya Dryomov goto out_unlock_session; 53953d14c5d2SYehuda Sadeh } 53963d14c5d2SYehuda Sadeh 53978921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 53983d14c5d2SYehuda Sadeh 5399f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 5400d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 5401d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 5402d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 54033f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 54043f0a4ac5SIlya Dryomov false); 54053d14c5d2SYehuda Sadeh if (!m) 54065aea3dcdSIlya Dryomov goto out_unlock_session; 54073d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 54083d14c5d2SYehuda Sadeh req->r_reply = m; 54093d14c5d2SYehuda Sadeh } 54103d14c5d2SYehuda Sadeh 5411d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 5412d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 5413d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 5414d15f9d69SIlya Dryomov req->r_reply->data_length); 54153d14c5d2SYehuda Sadeh m = NULL; 5416d15f9d69SIlya Dryomov *skip = 1; 54175aea3dcdSIlya Dryomov goto out_unlock_session; 54183d14c5d2SYehuda Sadeh } 5419d15f9d69SIlya Dryomov 5420d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 54213d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 54223d14c5d2SYehuda Sadeh 54235aea3dcdSIlya Dryomov out_unlock_session: 54245aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 54255aea3dcdSIlya Dryomov out_unlock_osdc: 54265aea3dcdSIlya Dryomov up_read(&osdc->lock); 54273d14c5d2SYehuda Sadeh return m; 54283d14c5d2SYehuda Sadeh } 54293d14c5d2SYehuda Sadeh 543019079203SIlya Dryomov static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) 543119079203SIlya Dryomov { 543219079203SIlya Dryomov struct ceph_msg *m; 543319079203SIlya Dryomov int type = le16_to_cpu(hdr->type); 543419079203SIlya Dryomov u32 front_len = le32_to_cpu(hdr->front_len); 543519079203SIlya Dryomov u32 data_len = le32_to_cpu(hdr->data_len); 543619079203SIlya Dryomov 54370d9c1ab3SIlya Dryomov m = ceph_msg_new2(type, front_len, 1, GFP_NOIO, false); 543819079203SIlya Dryomov if (!m) 543919079203SIlya Dryomov return NULL; 544019079203SIlya Dryomov 544119079203SIlya Dryomov if (data_len) { 544219079203SIlya Dryomov struct page **pages; 544319079203SIlya Dryomov 544419079203SIlya Dryomov pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), 544519079203SIlya Dryomov GFP_NOIO); 5446c22e853aSWei Yongjun if (IS_ERR(pages)) { 544719079203SIlya Dryomov ceph_msg_put(m); 544819079203SIlya Dryomov return NULL; 544919079203SIlya Dryomov } 545019079203SIlya Dryomov 5451e8862740SIlya Dryomov ceph_msg_data_add_pages(m, pages, data_len, 0, true); 545219079203SIlya Dryomov } 545319079203SIlya Dryomov 545419079203SIlya Dryomov return m; 545519079203SIlya Dryomov } 545619079203SIlya Dryomov 54573d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 54583d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 54593d14c5d2SYehuda Sadeh int *skip) 54603d14c5d2SYehuda Sadeh { 54613d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 54623d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 54633d14c5d2SYehuda Sadeh 54641c20f2d2SAlex Elder *skip = 0; 54653d14c5d2SYehuda Sadeh switch (type) { 54663d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 5467a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5468a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 546919079203SIlya Dryomov return alloc_msg_with_page_vector(hdr); 54703d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 54713d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 54723d14c5d2SYehuda Sadeh default: 54735aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 54745aea3dcdSIlya Dryomov osd->o_osd, type); 54753d14c5d2SYehuda Sadeh *skip = 1; 54763d14c5d2SYehuda Sadeh return NULL; 54773d14c5d2SYehuda Sadeh } 54783d14c5d2SYehuda Sadeh } 54793d14c5d2SYehuda Sadeh 54803d14c5d2SYehuda Sadeh /* 54813d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 54823d14c5d2SYehuda Sadeh */ 54833d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 54843d14c5d2SYehuda Sadeh { 54853d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 54863d14c5d2SYehuda Sadeh if (get_osd(osd)) 54873d14c5d2SYehuda Sadeh return con; 54883d14c5d2SYehuda Sadeh return NULL; 54893d14c5d2SYehuda Sadeh } 54903d14c5d2SYehuda Sadeh 54913d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 54923d14c5d2SYehuda Sadeh { 54933d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 54943d14c5d2SYehuda Sadeh put_osd(osd); 54953d14c5d2SYehuda Sadeh } 54963d14c5d2SYehuda Sadeh 54973d14c5d2SYehuda Sadeh /* 54983d14c5d2SYehuda Sadeh * authentication 54993d14c5d2SYehuda Sadeh */ 5500a3530df3SAlex Elder /* 5501a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 5502a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 5503a3530df3SAlex Elder */ 5504a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 55058f43fb53SAlex Elder int *proto, int force_new) 55063d14c5d2SYehuda Sadeh { 55073d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 55083d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 55093d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 551074f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 55113d14c5d2SYehuda Sadeh 551274f1869fSAlex Elder if (force_new && auth->authorizer) { 55136c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 551474f1869fSAlex Elder auth->authorizer = NULL; 55153d14c5d2SYehuda Sadeh } 551627859f97SSage Weil if (!auth->authorizer) { 551727859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 5518a3530df3SAlex Elder auth); 55193d14c5d2SYehuda Sadeh if (ret) 5520a3530df3SAlex Elder return ERR_PTR(ret); 552127859f97SSage Weil } else { 552227859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 55230bed9b5cSSage Weil auth); 55240bed9b5cSSage Weil if (ret) 55250bed9b5cSSage Weil return ERR_PTR(ret); 55263d14c5d2SYehuda Sadeh } 55273d14c5d2SYehuda Sadeh *proto = ac->protocol; 552874f1869fSAlex Elder 5529a3530df3SAlex Elder return auth; 55303d14c5d2SYehuda Sadeh } 55313d14c5d2SYehuda Sadeh 55326daca13dSIlya Dryomov static int add_authorizer_challenge(struct ceph_connection *con, 55336daca13dSIlya Dryomov void *challenge_buf, int challenge_buf_len) 55346daca13dSIlya Dryomov { 55356daca13dSIlya Dryomov struct ceph_osd *o = con->private; 55366daca13dSIlya Dryomov struct ceph_osd_client *osdc = o->o_osdc; 55376daca13dSIlya Dryomov struct ceph_auth_client *ac = osdc->client->monc.auth; 55386daca13dSIlya Dryomov 55396daca13dSIlya Dryomov return ceph_auth_add_authorizer_challenge(ac, o->o_auth.authorizer, 55406daca13dSIlya Dryomov challenge_buf, challenge_buf_len); 55416daca13dSIlya Dryomov } 55423d14c5d2SYehuda Sadeh 55430dde5848SIlya Dryomov static int verify_authorizer_reply(struct ceph_connection *con) 55443d14c5d2SYehuda Sadeh { 55453d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 55463d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 55473d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 55483d14c5d2SYehuda Sadeh 55490dde5848SIlya Dryomov return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer); 55503d14c5d2SYehuda Sadeh } 55513d14c5d2SYehuda Sadeh 55523d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 55533d14c5d2SYehuda Sadeh { 55543d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 55553d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 55563d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 55573d14c5d2SYehuda Sadeh 555827859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 55593d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 55603d14c5d2SYehuda Sadeh } 55613d14c5d2SYehuda Sadeh 55628cb441c0SIlya Dryomov static void osd_reencode_message(struct ceph_msg *msg) 55638cb441c0SIlya Dryomov { 5564914902afSIlya Dryomov int type = le16_to_cpu(msg->hdr.type); 5565914902afSIlya Dryomov 5566914902afSIlya Dryomov if (type == CEPH_MSG_OSD_OP) 55678cb441c0SIlya Dryomov encode_request_finish(msg); 55688cb441c0SIlya Dryomov } 55698cb441c0SIlya Dryomov 557079dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 557133d07337SYan, Zheng { 557279dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 557333d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 557479dbd1baSIlya Dryomov 557533d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 557633d07337SYan, Zheng } 557733d07337SYan, Zheng 557879dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 557933d07337SYan, Zheng { 558079dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 558133d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 558279dbd1baSIlya Dryomov 558333d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 558433d07337SYan, Zheng } 558533d07337SYan, Zheng 55863d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 55873d14c5d2SYehuda Sadeh .get = get_osd_con, 55883d14c5d2SYehuda Sadeh .put = put_osd_con, 55893d14c5d2SYehuda Sadeh .dispatch = dispatch, 55903d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 55916daca13dSIlya Dryomov .add_authorizer_challenge = add_authorizer_challenge, 55923d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 55933d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 55943d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 55958cb441c0SIlya Dryomov .reencode_message = osd_reencode_message, 559679dbd1baSIlya Dryomov .sign_message = osd_sign_message, 559779dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 55985aea3dcdSIlya Dryomov .fault = osd_fault, 55993d14c5d2SYehuda Sadeh }; 5600