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: 379*f628d799SJeff Layton case CEPH_OSD_OP_SPARSE_READ: 3805476492fSAlex Elder case CEPH_OSD_OP_WRITE: 381e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 382a679e50fSJeff Layton kfree(op->extent.sparse_ext); 3835476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 3845476492fSAlex Elder break; 3855476492fSAlex Elder case CEPH_OSD_OP_CALL: 3865476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 38704017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 3885476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 3895476492fSAlex Elder break; 390d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 391d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 392d74b50beSYan, Zheng ceph_osd_data_release(&op->xattr.osd_data); 393d74b50beSYan, Zheng break; 39466ba609fSYan, Zheng case CEPH_OSD_OP_STAT: 39566ba609fSYan, Zheng ceph_osd_data_release(&op->raw_data_in); 39666ba609fSYan, Zheng break; 397922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 398922dab61SIlya Dryomov ceph_osd_data_release(&op->notify_ack.request_data); 399922dab61SIlya Dryomov break; 40019079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 40119079203SIlya Dryomov ceph_osd_data_release(&op->notify.request_data); 40219079203SIlya Dryomov ceph_osd_data_release(&op->notify.response_data); 40319079203SIlya Dryomov break; 404a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 405a4ed38d7SDouglas Fuller ceph_osd_data_release(&op->list_watchers.response_data); 406a4ed38d7SDouglas Fuller break; 40778beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 40823ddf9beSLuis Henriques ceph_osd_data_release(&op->copy_from.osd_data); 40923ddf9beSLuis Henriques break; 4105476492fSAlex Elder default: 4115476492fSAlex Elder break; 4125476492fSAlex Elder } 413c54d47bfSAlex Elder } 414c54d47bfSAlex Elder 4153d14c5d2SYehuda Sadeh /* 41663244fa1SIlya Dryomov * Assumes @t is zero-initialized. 41763244fa1SIlya Dryomov */ 41863244fa1SIlya Dryomov static void target_init(struct ceph_osd_request_target *t) 41963244fa1SIlya Dryomov { 42063244fa1SIlya Dryomov ceph_oid_init(&t->base_oid); 42163244fa1SIlya Dryomov ceph_oloc_init(&t->base_oloc); 42263244fa1SIlya Dryomov ceph_oid_init(&t->target_oid); 42363244fa1SIlya Dryomov ceph_oloc_init(&t->target_oloc); 42463244fa1SIlya Dryomov 42563244fa1SIlya Dryomov ceph_osds_init(&t->acting); 42663244fa1SIlya Dryomov ceph_osds_init(&t->up); 42763244fa1SIlya Dryomov t->size = -1; 42863244fa1SIlya Dryomov t->min_size = -1; 42963244fa1SIlya Dryomov 43063244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 43163244fa1SIlya Dryomov } 43263244fa1SIlya Dryomov 433922dab61SIlya Dryomov static void target_copy(struct ceph_osd_request_target *dest, 434922dab61SIlya Dryomov const struct ceph_osd_request_target *src) 435922dab61SIlya Dryomov { 436922dab61SIlya Dryomov ceph_oid_copy(&dest->base_oid, &src->base_oid); 437922dab61SIlya Dryomov ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); 438922dab61SIlya Dryomov ceph_oid_copy(&dest->target_oid, &src->target_oid); 439922dab61SIlya Dryomov ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); 440922dab61SIlya Dryomov 441922dab61SIlya Dryomov dest->pgid = src->pgid; /* struct */ 442dc98ff72SIlya Dryomov dest->spgid = src->spgid; /* struct */ 443922dab61SIlya Dryomov dest->pg_num = src->pg_num; 444922dab61SIlya Dryomov dest->pg_num_mask = src->pg_num_mask; 445922dab61SIlya Dryomov ceph_osds_copy(&dest->acting, &src->acting); 446922dab61SIlya Dryomov ceph_osds_copy(&dest->up, &src->up); 447922dab61SIlya Dryomov dest->size = src->size; 448922dab61SIlya Dryomov dest->min_size = src->min_size; 449922dab61SIlya Dryomov dest->sort_bitwise = src->sort_bitwise; 4502f3fead6SIlya Dryomov dest->recovery_deletes = src->recovery_deletes; 451922dab61SIlya Dryomov 452922dab61SIlya Dryomov dest->flags = src->flags; 4537ed286f3SIlya Dryomov dest->used_replica = src->used_replica; 454922dab61SIlya Dryomov dest->paused = src->paused; 455922dab61SIlya Dryomov 45604c7d789SIlya Dryomov dest->epoch = src->epoch; 457dc93e0e2SIlya Dryomov dest->last_force_resend = src->last_force_resend; 458dc93e0e2SIlya Dryomov 459922dab61SIlya Dryomov dest->osd = src->osd; 460922dab61SIlya Dryomov } 461922dab61SIlya Dryomov 46263244fa1SIlya Dryomov static void target_destroy(struct ceph_osd_request_target *t) 46363244fa1SIlya Dryomov { 46463244fa1SIlya Dryomov ceph_oid_destroy(&t->base_oid); 46530c156d9SYan, Zheng ceph_oloc_destroy(&t->base_oloc); 46663244fa1SIlya Dryomov ceph_oid_destroy(&t->target_oid); 46730c156d9SYan, Zheng ceph_oloc_destroy(&t->target_oloc); 46863244fa1SIlya Dryomov } 46963244fa1SIlya Dryomov 47063244fa1SIlya Dryomov /* 4713d14c5d2SYehuda Sadeh * requests 4723d14c5d2SYehuda Sadeh */ 4733540bfdbSIlya Dryomov static void request_release_checks(struct ceph_osd_request *req) 4743540bfdbSIlya Dryomov { 4753540bfdbSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 4764609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node)); 47794e85771SIlya Dryomov WARN_ON(!list_empty(&req->r_private_item)); 4783540bfdbSIlya Dryomov WARN_ON(req->r_osd); 4793540bfdbSIlya Dryomov } 4803540bfdbSIlya Dryomov 4819e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 4823d14c5d2SYehuda Sadeh { 4839e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 4849e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 4855476492fSAlex Elder unsigned int which; 4863d14c5d2SYehuda Sadeh 4879e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 4889e94af20SIlya Dryomov req->r_request, req->r_reply); 4893540bfdbSIlya Dryomov request_release_checks(req); 4909e94af20SIlya Dryomov 4913d14c5d2SYehuda Sadeh if (req->r_request) 4923d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 4935aea3dcdSIlya Dryomov if (req->r_reply) 494ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 4950fff87ecSAlex Elder 4965476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 4975476492fSAlex Elder osd_req_op_data_release(req, which); 4980fff87ecSAlex Elder 499a66dd383SIlya Dryomov target_destroy(&req->r_t); 5003d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 501d30291b9SIlya Dryomov 5023d14c5d2SYehuda Sadeh if (req->r_mempool) 5033d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 5043f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 5055522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 5063f1af42aSIlya Dryomov else 5073f1af42aSIlya Dryomov kfree(req); 5083d14c5d2SYehuda Sadeh } 5099e94af20SIlya Dryomov 5109e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 5119e94af20SIlya Dryomov { 5129e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 5132c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 5149e94af20SIlya Dryomov kref_get(&req->r_kref); 5159e94af20SIlya Dryomov } 5169e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 5179e94af20SIlya Dryomov 5189e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 5199e94af20SIlya Dryomov { 5203ed97d63SIlya Dryomov if (req) { 5219e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 5222c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 5239e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 5249e94af20SIlya Dryomov } 5253ed97d63SIlya Dryomov } 5269e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 5273d14c5d2SYehuda Sadeh 5283540bfdbSIlya Dryomov static void request_init(struct ceph_osd_request *req) 5293540bfdbSIlya Dryomov { 530042f6498SJeff Layton /* req only, each op is zeroed in osd_req_op_init() */ 5313540bfdbSIlya Dryomov memset(req, 0, sizeof(*req)); 5323540bfdbSIlya Dryomov 5333540bfdbSIlya Dryomov kref_init(&req->r_kref); 5343540bfdbSIlya Dryomov init_completion(&req->r_completion); 5353540bfdbSIlya Dryomov RB_CLEAR_NODE(&req->r_node); 5364609245eSIlya Dryomov RB_CLEAR_NODE(&req->r_mc_node); 53794e85771SIlya Dryomov INIT_LIST_HEAD(&req->r_private_item); 5383540bfdbSIlya Dryomov 5393540bfdbSIlya Dryomov target_init(&req->r_t); 5403540bfdbSIlya Dryomov } 5413540bfdbSIlya Dryomov 5423d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 5433d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5441b83bef2SSage Weil unsigned int num_ops, 5453d14c5d2SYehuda Sadeh bool use_mempool, 54654a54007SAlex Elder gfp_t gfp_flags) 5473d14c5d2SYehuda Sadeh { 5483d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5493d14c5d2SYehuda Sadeh 5503d14c5d2SYehuda Sadeh if (use_mempool) { 5513f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 5523d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 5533f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 5543f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 5553d14c5d2SYehuda Sadeh } else { 5563f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 557acafe7e3SKees Cook req = kmalloc(struct_size(req, r_ops, num_ops), gfp_flags); 5583d14c5d2SYehuda Sadeh } 5593f1af42aSIlya Dryomov if (unlikely(!req)) 5603d14c5d2SYehuda Sadeh return NULL; 5613d14c5d2SYehuda Sadeh 5623540bfdbSIlya Dryomov request_init(req); 5633d14c5d2SYehuda Sadeh req->r_osdc = osdc; 5643d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 56579528734SAlex Elder req->r_num_ops = num_ops; 56684127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 56784127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 5683d14c5d2SYehuda Sadeh 56913d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 57013d1ad16SIlya Dryomov return req; 5713f1af42aSIlya Dryomov } 57213d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 5733f1af42aSIlya Dryomov 5742e59ffd1SIlya Dryomov static int ceph_oloc_encoding_size(const struct ceph_object_locator *oloc) 57530c156d9SYan, Zheng { 57630c156d9SYan, Zheng return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0); 57730c156d9SYan, Zheng } 57830c156d9SYan, Zheng 5790d9c1ab3SIlya Dryomov static int __ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp, 5800d9c1ab3SIlya Dryomov int num_request_data_items, 5810d9c1ab3SIlya Dryomov int num_reply_data_items) 58213d1ad16SIlya Dryomov { 58313d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 58413d1ad16SIlya Dryomov struct ceph_msg *msg; 58513d1ad16SIlya Dryomov int msg_size; 5863d14c5d2SYehuda Sadeh 5870d9c1ab3SIlya Dryomov WARN_ON(req->r_request || req->r_reply); 588d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 58930c156d9SYan, Zheng WARN_ON(ceph_oloc_empty(&req->r_base_oloc)); 590d30291b9SIlya Dryomov 59113d1ad16SIlya Dryomov /* create request message */ 5928cb441c0SIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 5938cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 5948cb441c0SIlya Dryomov msg_size += 4 + 4 + 4; /* hash, osdmap_epoch, flags */ 5958cb441c0SIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 5968cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid); /* reqid */ 5978cb441c0SIlya Dryomov msg_size += sizeof(struct ceph_blkin_trace_info); /* trace */ 5988cb441c0SIlya Dryomov msg_size += 4 + sizeof(struct ceph_timespec); /* client_inc, mtime */ 59930c156d9SYan, Zheng msg_size += CEPH_ENCODING_START_BLK_LEN + 60030c156d9SYan, Zheng ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */ 60113d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 60213d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 603ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 604ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 60513d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 6068cb441c0SIlya Dryomov msg_size += 4 + 8; /* retry_attempt, features */ 607ae458f5aSIlya Dryomov 60813d1ad16SIlya Dryomov if (req->r_mempool) 6090d9c1ab3SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op, msg_size, 6100d9c1ab3SIlya Dryomov num_request_data_items); 6113d14c5d2SYehuda Sadeh else 6120d9c1ab3SIlya Dryomov msg = ceph_msg_new2(CEPH_MSG_OSD_OP, msg_size, 6130d9c1ab3SIlya Dryomov num_request_data_items, gfp, true); 61413d1ad16SIlya Dryomov if (!msg) 61513d1ad16SIlya Dryomov return -ENOMEM; 6163d14c5d2SYehuda Sadeh 6173d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 6183d14c5d2SYehuda Sadeh req->r_request = msg; 6193d14c5d2SYehuda Sadeh 62013d1ad16SIlya Dryomov /* create reply message */ 62113d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 622711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 623711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 62413d1ad16SIlya Dryomov 62513d1ad16SIlya Dryomov if (req->r_mempool) 6260d9c1ab3SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, msg_size, 6270d9c1ab3SIlya Dryomov num_reply_data_items); 62813d1ad16SIlya Dryomov else 6290d9c1ab3SIlya Dryomov msg = ceph_msg_new2(CEPH_MSG_OSD_OPREPLY, msg_size, 6300d9c1ab3SIlya Dryomov num_reply_data_items, gfp, true); 63113d1ad16SIlya Dryomov if (!msg) 63213d1ad16SIlya Dryomov return -ENOMEM; 63313d1ad16SIlya Dryomov 63413d1ad16SIlya Dryomov req->r_reply = msg; 63513d1ad16SIlya Dryomov 63613d1ad16SIlya Dryomov return 0; 63713d1ad16SIlya Dryomov } 6383d14c5d2SYehuda Sadeh 639a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 640a8dd0a37SAlex Elder { 641a8dd0a37SAlex Elder switch (opcode) { 64270b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 64370b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 64470b5bfa3SIlya Dryomov #undef GENERATE_CASE 645a8dd0a37SAlex Elder default: 646a8dd0a37SAlex Elder return false; 647a8dd0a37SAlex Elder } 648a8dd0a37SAlex Elder } 649a8dd0a37SAlex Elder 6500d9c1ab3SIlya Dryomov static void get_num_data_items(struct ceph_osd_request *req, 6510d9c1ab3SIlya Dryomov int *num_request_data_items, 6520d9c1ab3SIlya Dryomov int *num_reply_data_items) 6530d9c1ab3SIlya Dryomov { 6540d9c1ab3SIlya Dryomov struct ceph_osd_req_op *op; 6550d9c1ab3SIlya Dryomov 6560d9c1ab3SIlya Dryomov *num_request_data_items = 0; 6570d9c1ab3SIlya Dryomov *num_reply_data_items = 0; 6580d9c1ab3SIlya Dryomov 6590d9c1ab3SIlya Dryomov for (op = req->r_ops; op != &req->r_ops[req->r_num_ops]; op++) { 6600d9c1ab3SIlya Dryomov switch (op->op) { 6610d9c1ab3SIlya Dryomov /* request */ 6620d9c1ab3SIlya Dryomov case CEPH_OSD_OP_WRITE: 6630d9c1ab3SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 6640d9c1ab3SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 6650d9c1ab3SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 6660d9c1ab3SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 66778beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 6680d9c1ab3SIlya Dryomov *num_request_data_items += 1; 6690d9c1ab3SIlya Dryomov break; 6700d9c1ab3SIlya Dryomov 6710d9c1ab3SIlya Dryomov /* reply */ 6720d9c1ab3SIlya Dryomov case CEPH_OSD_OP_STAT: 6730d9c1ab3SIlya Dryomov case CEPH_OSD_OP_READ: 674*f628d799SJeff Layton case CEPH_OSD_OP_SPARSE_READ: 6750d9c1ab3SIlya Dryomov case CEPH_OSD_OP_LIST_WATCHERS: 6760d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 6770d9c1ab3SIlya Dryomov break; 6780d9c1ab3SIlya Dryomov 6790d9c1ab3SIlya Dryomov /* both */ 6800d9c1ab3SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 6810d9c1ab3SIlya Dryomov *num_request_data_items += 1; 6820d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 6830d9c1ab3SIlya Dryomov break; 6840d9c1ab3SIlya Dryomov case CEPH_OSD_OP_CALL: 6850d9c1ab3SIlya Dryomov *num_request_data_items += 2; 6860d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 6870d9c1ab3SIlya Dryomov break; 6880d9c1ab3SIlya Dryomov 6890d9c1ab3SIlya Dryomov default: 6900d9c1ab3SIlya Dryomov WARN_ON(!osd_req_opcode_valid(op->op)); 6910d9c1ab3SIlya Dryomov break; 6920d9c1ab3SIlya Dryomov } 6930d9c1ab3SIlya Dryomov } 6940d9c1ab3SIlya Dryomov } 6950d9c1ab3SIlya Dryomov 6960d9c1ab3SIlya Dryomov /* 6970d9c1ab3SIlya Dryomov * oid, oloc and OSD op opcode(s) must be filled in before this function 6980d9c1ab3SIlya Dryomov * is called. 6990d9c1ab3SIlya Dryomov */ 7000d9c1ab3SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 7010d9c1ab3SIlya Dryomov { 7020d9c1ab3SIlya Dryomov int num_request_data_items, num_reply_data_items; 7030d9c1ab3SIlya Dryomov 7040d9c1ab3SIlya Dryomov get_num_data_items(req, &num_request_data_items, &num_reply_data_items); 7050d9c1ab3SIlya Dryomov return __ceph_osdc_alloc_messages(req, gfp, num_request_data_items, 7060d9c1ab3SIlya Dryomov num_reply_data_items); 7070d9c1ab3SIlya Dryomov } 7080d9c1ab3SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 7090d9c1ab3SIlya Dryomov 71033803f33SAlex Elder /* 71133803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 71233803f33SAlex Elder * other information associated with them. It also serves as a 71333803f33SAlex Elder * common init routine for all the other init functions, below. 71433803f33SAlex Elder */ 715042f6498SJeff Layton struct ceph_osd_req_op * 716042f6498SJeff Layton osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 717144cba14SYan, Zheng u16 opcode, u32 flags) 71833803f33SAlex Elder { 719c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 720c99d2d4aSAlex Elder 721c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 72233803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 72333803f33SAlex Elder 724c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 72533803f33SAlex Elder memset(op, 0, sizeof (*op)); 72633803f33SAlex Elder op->op = opcode; 727144cba14SYan, Zheng op->flags = flags; 728c99d2d4aSAlex Elder 729c99d2d4aSAlex Elder return op; 73033803f33SAlex Elder } 73149719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 73249719778SAlex Elder 733c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 734c99d2d4aSAlex Elder unsigned int which, u16 opcode, 73533803f33SAlex Elder u64 offset, u64 length, 73633803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 73733803f33SAlex Elder { 738042f6498SJeff Layton struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, 739144cba14SYan, Zheng opcode, 0); 74033803f33SAlex Elder size_t payload_len = 0; 74133803f33SAlex Elder 742ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 743e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 744*f628d799SJeff Layton opcode != CEPH_OSD_OP_TRUNCATE && opcode != CEPH_OSD_OP_SPARSE_READ); 74533803f33SAlex Elder 74633803f33SAlex Elder op->extent.offset = offset; 74733803f33SAlex Elder op->extent.length = length; 74833803f33SAlex Elder op->extent.truncate_size = truncate_size; 74933803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 750e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 75133803f33SAlex Elder payload_len += length; 75233803f33SAlex Elder 753de2aa102SIlya Dryomov op->indata_len = payload_len; 75433803f33SAlex Elder } 75533803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 75633803f33SAlex Elder 757c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 758c99d2d4aSAlex Elder unsigned int which, u64 length) 759e5975c7cSAlex Elder { 760c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 761c99d2d4aSAlex Elder u64 previous; 762c99d2d4aSAlex Elder 763c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 764c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 765c99d2d4aSAlex Elder previous = op->extent.length; 766e5975c7cSAlex Elder 767e5975c7cSAlex Elder if (length == previous) 768e5975c7cSAlex Elder return; /* Nothing to do */ 769e5975c7cSAlex Elder BUG_ON(length > previous); 770e5975c7cSAlex Elder 771e5975c7cSAlex Elder op->extent.length = length; 772d641df81SYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 773de2aa102SIlya Dryomov op->indata_len -= previous - length; 774e5975c7cSAlex Elder } 775e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 776e5975c7cSAlex Elder 7772c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 7782c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 7792c63f49aSYan, Zheng { 7802c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 7812c63f49aSYan, Zheng 7822c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 7832c63f49aSYan, Zheng 7842c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 785042f6498SJeff Layton op = osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 7862c63f49aSYan, Zheng /* dup previous one */ 7872c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 7882c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 7892c63f49aSYan, Zheng op->extent = prev_op->extent; 7902c63f49aSYan, Zheng /* adjust offset */ 7912c63f49aSYan, Zheng op->extent.offset += offset_inc; 7922c63f49aSYan, Zheng op->extent.length -= offset_inc; 7932c63f49aSYan, Zheng 7942c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 7952c63f49aSYan, Zheng op->indata_len -= offset_inc; 7962c63f49aSYan, Zheng } 7972c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 7982c63f49aSYan, Zheng 799fe943d50SChengguang Xu int osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 80024639ce5SIlya Dryomov const char *class, const char *method) 80133803f33SAlex Elder { 80224639ce5SIlya Dryomov struct ceph_osd_req_op *op; 8035f562df5SAlex Elder struct ceph_pagelist *pagelist; 80433803f33SAlex Elder size_t payload_len = 0; 80533803f33SAlex Elder size_t size; 8064766815bSDavid Disseldorp int ret; 80733803f33SAlex Elder 808042f6498SJeff Layton op = osd_req_op_init(osd_req, which, CEPH_OSD_OP_CALL, 0); 80933803f33SAlex Elder 81033165d47SIlya Dryomov pagelist = ceph_pagelist_alloc(GFP_NOFS); 811fe943d50SChengguang Xu if (!pagelist) 812fe943d50SChengguang Xu return -ENOMEM; 813fe943d50SChengguang Xu 81433803f33SAlex Elder op->cls.class_name = class; 81533803f33SAlex Elder size = strlen(class); 81633803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 81733803f33SAlex Elder op->cls.class_len = size; 8184766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, class, size); 8194766815bSDavid Disseldorp if (ret) 8204766815bSDavid Disseldorp goto err_pagelist_free; 82133803f33SAlex Elder payload_len += size; 82233803f33SAlex Elder 82333803f33SAlex Elder op->cls.method_name = method; 82433803f33SAlex Elder size = strlen(method); 82533803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 82633803f33SAlex Elder op->cls.method_len = size; 8274766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, method, size); 8284766815bSDavid Disseldorp if (ret) 8294766815bSDavid Disseldorp goto err_pagelist_free; 83033803f33SAlex Elder payload_len += size; 83133803f33SAlex Elder 832a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 833de2aa102SIlya Dryomov op->indata_len = payload_len; 834fe943d50SChengguang Xu return 0; 8354766815bSDavid Disseldorp 8364766815bSDavid Disseldorp err_pagelist_free: 8374766815bSDavid Disseldorp ceph_pagelist_release(pagelist); 8384766815bSDavid Disseldorp return ret; 83933803f33SAlex Elder } 84033803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 8418c042b0dSAlex Elder 842d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 843d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 844d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 845d74b50beSYan, Zheng { 846042f6498SJeff Layton struct ceph_osd_req_op *op = osd_req_op_init(osd_req, which, 847144cba14SYan, Zheng opcode, 0); 848d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 849d74b50beSYan, Zheng size_t payload_len; 8504766815bSDavid Disseldorp int ret; 851d74b50beSYan, Zheng 852d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 853d74b50beSYan, Zheng 85433165d47SIlya Dryomov pagelist = ceph_pagelist_alloc(GFP_NOFS); 855d74b50beSYan, Zheng if (!pagelist) 856d74b50beSYan, Zheng return -ENOMEM; 857d74b50beSYan, Zheng 858d74b50beSYan, Zheng payload_len = strlen(name); 859d74b50beSYan, Zheng op->xattr.name_len = payload_len; 8604766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, name, payload_len); 8614766815bSDavid Disseldorp if (ret) 8624766815bSDavid Disseldorp goto err_pagelist_free; 863d74b50beSYan, Zheng 864d74b50beSYan, Zheng op->xattr.value_len = size; 8654766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, value, size); 8664766815bSDavid Disseldorp if (ret) 8674766815bSDavid Disseldorp goto err_pagelist_free; 868d74b50beSYan, Zheng payload_len += size; 869d74b50beSYan, Zheng 870d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 871d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 872d74b50beSYan, Zheng 873d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 874de2aa102SIlya Dryomov op->indata_len = payload_len; 875d74b50beSYan, Zheng return 0; 8764766815bSDavid Disseldorp 8774766815bSDavid Disseldorp err_pagelist_free: 8784766815bSDavid Disseldorp ceph_pagelist_release(pagelist); 8794766815bSDavid Disseldorp return ret; 880d74b50beSYan, Zheng } 881d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 882d74b50beSYan, Zheng 883922dab61SIlya Dryomov /* 884922dab61SIlya Dryomov * @watch_opcode: CEPH_OSD_WATCH_OP_* 885922dab61SIlya Dryomov */ 886922dab61SIlya Dryomov static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, 88775dbb685SIlya Dryomov u8 watch_opcode, u64 cookie, u32 gen) 88833803f33SAlex Elder { 889922dab61SIlya Dryomov struct ceph_osd_req_op *op; 89033803f33SAlex Elder 891042f6498SJeff Layton op = osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); 89233803f33SAlex Elder op->watch.cookie = cookie; 893922dab61SIlya Dryomov op->watch.op = watch_opcode; 89475dbb685SIlya Dryomov op->watch.gen = gen; 89575dbb685SIlya Dryomov } 89675dbb685SIlya Dryomov 89775dbb685SIlya Dryomov /* 89875dbb685SIlya Dryomov * prot_ver, timeout and notify payload (may be empty) should already be 89975dbb685SIlya Dryomov * encoded in @request_pl 90075dbb685SIlya Dryomov */ 90175dbb685SIlya Dryomov static void osd_req_op_notify_init(struct ceph_osd_request *req, int which, 90275dbb685SIlya Dryomov u64 cookie, struct ceph_pagelist *request_pl) 90375dbb685SIlya Dryomov { 90475dbb685SIlya Dryomov struct ceph_osd_req_op *op; 90575dbb685SIlya Dryomov 90675dbb685SIlya Dryomov op = osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); 90775dbb685SIlya Dryomov op->notify.cookie = cookie; 90875dbb685SIlya Dryomov 90975dbb685SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify.request_data, request_pl); 91075dbb685SIlya Dryomov op->indata_len = request_pl->length; 91133803f33SAlex Elder } 91233803f33SAlex Elder 913d3798accSIlya Dryomov /* 914d3798accSIlya Dryomov * @flags: CEPH_OSD_OP_ALLOC_HINT_FLAG_* 915d3798accSIlya Dryomov */ 916c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 917c647b8a8SIlya Dryomov unsigned int which, 918c647b8a8SIlya Dryomov u64 expected_object_size, 919d3798accSIlya Dryomov u64 expected_write_size, 920d3798accSIlya Dryomov u32 flags) 921c647b8a8SIlya Dryomov { 922042f6498SJeff Layton struct ceph_osd_req_op *op; 923c647b8a8SIlya Dryomov 924042f6498SJeff Layton op = osd_req_op_init(osd_req, which, CEPH_OSD_OP_SETALLOCHINT, 0); 925c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 926c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 927d3798accSIlya Dryomov op->alloc_hint.flags = flags; 928c647b8a8SIlya Dryomov 929c647b8a8SIlya Dryomov /* 930c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 931c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 932c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 933c647b8a8SIlya Dryomov */ 934c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 935c647b8a8SIlya Dryomov } 936c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 937c647b8a8SIlya Dryomov 93890af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 939ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 940ec9123c5SAlex Elder { 941ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 942ec9123c5SAlex Elder 943ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 944ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 945ec9123c5SAlex Elder if (length) 94690af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 947e8862740SIlya Dryomov length, osd_data->alignment, false); 948ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 949ec9123c5SAlex Elder BUG_ON(!length); 95090af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 951ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 952ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 9535359a17dSIlya Dryomov ceph_msg_data_add_bio(msg, &osd_data->bio_pos, length); 954ec9123c5SAlex Elder #endif 955b9e281c2SIlya Dryomov } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BVECS) { 956b9e281c2SIlya Dryomov ceph_msg_data_add_bvecs(msg, &osd_data->bvec_pos); 957ec9123c5SAlex Elder } else { 958ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 959ec9123c5SAlex Elder } 960ec9123c5SAlex Elder } 961ec9123c5SAlex Elder 962bb873b53SIlya Dryomov static u32 osd_req_encode_op(struct ceph_osd_op *dst, 963bb873b53SIlya Dryomov const struct ceph_osd_req_op *src) 9643d14c5d2SYehuda Sadeh { 965065a68f9SAlex Elder switch (src->op) { 966fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 967fbfab539SAlex Elder break; 9683d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 969*f628d799SJeff Layton case CEPH_OSD_OP_SPARSE_READ: 9703d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 971e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 972ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 973ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 974175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 975175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 9763d14c5d2SYehuda Sadeh dst->extent.truncate_size = 9773d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 9783d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 9793d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 9803d14c5d2SYehuda Sadeh break; 9813d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 9823d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 9833d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 984bb873b53SIlya Dryomov dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 9853d14c5d2SYehuda Sadeh break; 986a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 987a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 988922dab61SIlya Dryomov dst->watch.ver = cpu_to_le64(0); 989922dab61SIlya Dryomov dst->watch.op = src->watch.op; 990922dab61SIlya Dryomov dst->watch.gen = cpu_to_le32(src->watch.gen); 991922dab61SIlya Dryomov break; 992922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 993a40c4f10SYehuda Sadeh break; 99419079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 99519079203SIlya Dryomov dst->notify.cookie = cpu_to_le64(src->notify.cookie); 99619079203SIlya Dryomov break; 997a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 998a4ed38d7SDouglas Fuller break; 999c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 1000c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 1001c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 1002c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 1003c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 1004d3798accSIlya Dryomov dst->alloc_hint.flags = cpu_to_le32(src->alloc_hint.flags); 1005c647b8a8SIlya Dryomov break; 1006d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 1007d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 1008d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 1009d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 1010d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 1011d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 1012d74b50beSYan, Zheng break; 1013864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 1014864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 1015864e9197SYan, Zheng break; 101678beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 101723ddf9beSLuis Henriques dst->copy_from.snapid = cpu_to_le64(src->copy_from.snapid); 101823ddf9beSLuis Henriques dst->copy_from.src_version = 101923ddf9beSLuis Henriques cpu_to_le64(src->copy_from.src_version); 102023ddf9beSLuis Henriques dst->copy_from.flags = src->copy_from.flags; 102123ddf9beSLuis Henriques dst->copy_from.src_fadvise_flags = 102223ddf9beSLuis Henriques cpu_to_le32(src->copy_from.src_fadvise_flags); 102323ddf9beSLuis Henriques break; 10243d14c5d2SYehuda Sadeh default: 10254c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 10268f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 10274c46459cSAlex Elder WARN_ON(1); 1028a8dd0a37SAlex Elder 1029a8dd0a37SAlex Elder return 0; 10303d14c5d2SYehuda Sadeh } 10317b25bf5fSIlya Dryomov 1032a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 10337b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 1034de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 1035175face2SAlex Elder 1036bb873b53SIlya Dryomov return src->indata_len; 10373d14c5d2SYehuda Sadeh } 10383d14c5d2SYehuda Sadeh 10393d14c5d2SYehuda Sadeh /* 10403d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 10413d14c5d2SYehuda Sadeh * extent as needed. 10423d14c5d2SYehuda Sadeh * 10433d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 10443d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 10453d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 10463d14c5d2SYehuda Sadeh */ 10473d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 10483d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 10493d14c5d2SYehuda Sadeh struct ceph_vino vino, 1050715e4cd4SYan, Zheng u64 off, u64 *plen, 1051715e4cd4SYan, Zheng unsigned int which, int num_ops, 10523d14c5d2SYehuda Sadeh int opcode, int flags, 10533d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 10543d14c5d2SYehuda Sadeh u32 truncate_seq, 10553d14c5d2SYehuda Sadeh u64 truncate_size, 1056153e5167SAlex Elder bool use_mempool) 10573d14c5d2SYehuda Sadeh { 10583d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 105975d1c941SAlex Elder u64 objnum = 0; 106075d1c941SAlex Elder u64 objoff = 0; 106175d1c941SAlex Elder u64 objlen = 0; 10626816282dSSage Weil int r; 10633d14c5d2SYehuda Sadeh 1064ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 1065864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 1066*f628d799SJeff Layton opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE && 1067*f628d799SJeff Layton opcode != CEPH_OSD_OP_SPARSE_READ); 10683d14c5d2SYehuda Sadeh 1069acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 1070ae7ca4a3SAlex Elder GFP_NOFS); 107113d1ad16SIlya Dryomov if (!req) { 107213d1ad16SIlya Dryomov r = -ENOMEM; 107313d1ad16SIlya Dryomov goto fail; 107413d1ad16SIlya Dryomov } 107579528734SAlex Elder 10763d14c5d2SYehuda Sadeh /* calculate max write size */ 1077a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 107813d1ad16SIlya Dryomov if (r) 107913d1ad16SIlya Dryomov goto fail; 1080a19dadfbSAlex Elder 1081864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 1082144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 1083864e9197SYan, Zheng } else { 10847627151eSYan, Zheng u32 object_size = layout->object_size; 1085864e9197SYan, Zheng u32 object_base = off - objoff; 1086ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 1087d18d1e28SAlex Elder if (truncate_size <= object_base) { 1088d18d1e28SAlex Elder truncate_size = 0; 1089d18d1e28SAlex Elder } else { 1090d18d1e28SAlex Elder truncate_size -= object_base; 1091d18d1e28SAlex Elder if (truncate_size > object_size) 1092d18d1e28SAlex Elder truncate_size = object_size; 1093d18d1e28SAlex Elder } 1094ccca4e37SYan, Zheng } 1095715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 1096b0270324SAlex Elder truncate_size, truncate_seq); 1097864e9197SYan, Zheng } 1098d18d1e28SAlex Elder 10997627151eSYan, Zheng req->r_base_oloc.pool = layout->pool_id; 110030c156d9SYan, Zheng req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns); 1101d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 110222d2cfdfSIlya Dryomov req->r_flags = flags | osdc->client->options->read_from_replica; 1103dbe0fc41SAlex Elder 1104bb873b53SIlya Dryomov req->r_snapid = vino.snap; 1105bb873b53SIlya Dryomov if (flags & CEPH_OSD_FLAG_WRITE) 1106bb873b53SIlya Dryomov req->r_data_offset = off; 1107bb873b53SIlya Dryomov 11080d9c1ab3SIlya Dryomov if (num_ops > 1) 11090d9c1ab3SIlya Dryomov /* 11100d9c1ab3SIlya Dryomov * This is a special case for ceph_writepages_start(), but it 11110d9c1ab3SIlya Dryomov * also covers ceph_uninline_data(). If more multi-op request 11120d9c1ab3SIlya Dryomov * use cases emerge, we will need a separate helper. 11130d9c1ab3SIlya Dryomov */ 11140d9c1ab3SIlya Dryomov r = __ceph_osdc_alloc_messages(req, GFP_NOFS, num_ops, 0); 11150d9c1ab3SIlya Dryomov else 111613d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 111713d1ad16SIlya Dryomov if (r) 111813d1ad16SIlya Dryomov goto fail; 111913d1ad16SIlya Dryomov 11203d14c5d2SYehuda Sadeh return req; 112113d1ad16SIlya Dryomov 112213d1ad16SIlya Dryomov fail: 112313d1ad16SIlya Dryomov ceph_osdc_put_request(req); 112413d1ad16SIlya Dryomov return ERR_PTR(r); 11253d14c5d2SYehuda Sadeh } 11263d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 11273d14c5d2SYehuda Sadeh 1128a679e50fSJeff Layton int __ceph_alloc_sparse_ext_map(struct ceph_osd_req_op *op, int cnt) 1129a679e50fSJeff Layton { 1130a679e50fSJeff Layton op->extent.sparse_ext_cnt = cnt; 1131a679e50fSJeff Layton op->extent.sparse_ext = kmalloc_array(cnt, 1132a679e50fSJeff Layton sizeof(*op->extent.sparse_ext), 1133a679e50fSJeff Layton GFP_NOFS); 1134a679e50fSJeff Layton if (!op->extent.sparse_ext) 1135a679e50fSJeff Layton return -ENOMEM; 1136a679e50fSJeff Layton return 0; 1137a679e50fSJeff Layton } 1138a679e50fSJeff Layton EXPORT_SYMBOL(__ceph_alloc_sparse_ext_map); 1139a679e50fSJeff Layton 11403d14c5d2SYehuda Sadeh /* 11413d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 11423d14c5d2SYehuda Sadeh */ 1143fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 11444609245eSIlya Dryomov DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) 11453d14c5d2SYehuda Sadeh 114666850df5SIlya Dryomov /* 114766850df5SIlya Dryomov * Call @fn on each OSD request as long as @fn returns 0. 114866850df5SIlya Dryomov */ 114966850df5SIlya Dryomov static void for_each_request(struct ceph_osd_client *osdc, 115066850df5SIlya Dryomov int (*fn)(struct ceph_osd_request *req, void *arg), 115166850df5SIlya Dryomov void *arg) 115266850df5SIlya Dryomov { 115366850df5SIlya Dryomov struct rb_node *n, *p; 115466850df5SIlya Dryomov 115566850df5SIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 115666850df5SIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 115766850df5SIlya Dryomov 115866850df5SIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 115966850df5SIlya Dryomov struct ceph_osd_request *req = 116066850df5SIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 116166850df5SIlya Dryomov 116266850df5SIlya Dryomov p = rb_next(p); 116366850df5SIlya Dryomov if (fn(req, arg)) 116466850df5SIlya Dryomov return; 116566850df5SIlya Dryomov } 116666850df5SIlya Dryomov } 116766850df5SIlya Dryomov 116866850df5SIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 116966850df5SIlya Dryomov struct ceph_osd_request *req = 117066850df5SIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 117166850df5SIlya Dryomov 117266850df5SIlya Dryomov p = rb_next(p); 117366850df5SIlya Dryomov if (fn(req, arg)) 117466850df5SIlya Dryomov return; 117566850df5SIlya Dryomov } 117666850df5SIlya Dryomov } 117766850df5SIlya Dryomov 11780247a0cfSIlya Dryomov static bool osd_homeless(struct ceph_osd *osd) 11790247a0cfSIlya Dryomov { 11800247a0cfSIlya Dryomov return osd->o_osd == CEPH_HOMELESS_OSD; 11810247a0cfSIlya Dryomov } 11820247a0cfSIlya Dryomov 11835aea3dcdSIlya Dryomov static bool osd_registered(struct ceph_osd *osd) 11843d14c5d2SYehuda Sadeh { 11855aea3dcdSIlya Dryomov verify_osdc_locked(osd->o_osdc); 11863d14c5d2SYehuda Sadeh 11875aea3dcdSIlya Dryomov return !RB_EMPTY_NODE(&osd->o_node); 11883d14c5d2SYehuda Sadeh } 11893d14c5d2SYehuda Sadeh 11903d14c5d2SYehuda Sadeh /* 11910247a0cfSIlya Dryomov * Assumes @osd is zero-initialized. 11920247a0cfSIlya Dryomov */ 11930247a0cfSIlya Dryomov static void osd_init(struct ceph_osd *osd) 11940247a0cfSIlya Dryomov { 119502113a0fSElena Reshetova refcount_set(&osd->o_ref, 1); 11960247a0cfSIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 119708b8a044SJeff Layton spin_lock_init(&osd->o_requests_lock); 11985aea3dcdSIlya Dryomov osd->o_requests = RB_ROOT; 1199922dab61SIlya Dryomov osd->o_linger_requests = RB_ROOT; 1200a02a946dSIlya Dryomov osd->o_backoff_mappings = RB_ROOT; 1201a02a946dSIlya Dryomov osd->o_backoffs_by_id = RB_ROOT; 12020247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_osd_lru); 12030247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_keepalive_item); 12040247a0cfSIlya Dryomov osd->o_incarnation = 1; 12055aea3dcdSIlya Dryomov mutex_init(&osd->lock); 12060247a0cfSIlya Dryomov } 12070247a0cfSIlya Dryomov 1208*f628d799SJeff Layton static void ceph_init_sparse_read(struct ceph_sparse_read *sr) 1209*f628d799SJeff Layton { 1210*f628d799SJeff Layton kfree(sr->sr_extent); 1211*f628d799SJeff Layton memset(sr, '\0', sizeof(*sr)); 1212*f628d799SJeff Layton sr->sr_state = CEPH_SPARSE_READ_HDR; 1213*f628d799SJeff Layton } 1214*f628d799SJeff Layton 12150247a0cfSIlya Dryomov static void osd_cleanup(struct ceph_osd *osd) 12160247a0cfSIlya Dryomov { 12170247a0cfSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); 12185aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 1219922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 1220a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoff_mappings)); 1221a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoffs_by_id)); 12220247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_osd_lru)); 12230247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_keepalive_item)); 12240247a0cfSIlya Dryomov 1225*f628d799SJeff Layton ceph_init_sparse_read(&osd->o_sparse_read); 1226*f628d799SJeff Layton 12270247a0cfSIlya Dryomov if (osd->o_auth.authorizer) { 12280247a0cfSIlya Dryomov WARN_ON(osd_homeless(osd)); 12290247a0cfSIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 12300247a0cfSIlya Dryomov } 12310247a0cfSIlya Dryomov } 12320247a0cfSIlya Dryomov 12330247a0cfSIlya Dryomov /* 12343d14c5d2SYehuda Sadeh * Track open sessions with osds. 12353d14c5d2SYehuda Sadeh */ 1236e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 12373d14c5d2SYehuda Sadeh { 12383d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12393d14c5d2SYehuda Sadeh 12400247a0cfSIlya Dryomov WARN_ON(onum == CEPH_HOMELESS_OSD); 12410247a0cfSIlya Dryomov 12427a28f59bSIlya Dryomov osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); 12430247a0cfSIlya Dryomov osd_init(osd); 12443d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1245e10006f8SAlex Elder osd->o_osd = onum; 1246*f628d799SJeff Layton osd->o_sparse_op_idx = -1; 1247*f628d799SJeff Layton 1248*f628d799SJeff Layton ceph_init_sparse_read(&osd->o_sparse_read); 12493d14c5d2SYehuda Sadeh 1250b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 12513d14c5d2SYehuda Sadeh 12523d14c5d2SYehuda Sadeh return osd; 12533d14c5d2SYehuda Sadeh } 12543d14c5d2SYehuda Sadeh 12553d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 12563d14c5d2SYehuda Sadeh { 125702113a0fSElena Reshetova if (refcount_inc_not_zero(&osd->o_ref)) { 125802113a0fSElena Reshetova dout("get_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref)-1, 125902113a0fSElena Reshetova refcount_read(&osd->o_ref)); 12603d14c5d2SYehuda Sadeh return osd; 12613d14c5d2SYehuda Sadeh } else { 12623d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 12633d14c5d2SYehuda Sadeh return NULL; 12643d14c5d2SYehuda Sadeh } 12653d14c5d2SYehuda Sadeh } 12663d14c5d2SYehuda Sadeh 12673d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 12683d14c5d2SYehuda Sadeh { 126902113a0fSElena Reshetova dout("put_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref), 127002113a0fSElena Reshetova refcount_read(&osd->o_ref) - 1); 127102113a0fSElena Reshetova if (refcount_dec_and_test(&osd->o_ref)) { 12720247a0cfSIlya Dryomov osd_cleanup(osd); 12733d14c5d2SYehuda Sadeh kfree(osd); 12743d14c5d2SYehuda Sadeh } 12753d14c5d2SYehuda Sadeh } 12763d14c5d2SYehuda Sadeh 1277fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1278fcd00b68SIlya Dryomov 12799dd2845cSIlya Dryomov static void __move_osd_to_lru(struct ceph_osd *osd) 12803d14c5d2SYehuda Sadeh { 12819dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 12829dd2845cSIlya Dryomov 12839dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 12843d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1285bbf37ec3SIlya Dryomov 12869dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 12873d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 12889dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 12899dd2845cSIlya Dryomov 1290a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 12913d14c5d2SYehuda Sadeh } 12923d14c5d2SYehuda Sadeh 12939dd2845cSIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd *osd) 1294bbf37ec3SIlya Dryomov { 12955aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1296922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) 12979dd2845cSIlya Dryomov __move_osd_to_lru(osd); 1298bbf37ec3SIlya Dryomov } 1299bbf37ec3SIlya Dryomov 13003d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 13013d14c5d2SYehuda Sadeh { 13029dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 13039dd2845cSIlya Dryomov 13049dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 13059dd2845cSIlya Dryomov 13069dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 13073d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 13083d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 13099dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 13103d14c5d2SYehuda Sadeh } 13113d14c5d2SYehuda Sadeh 13123d14c5d2SYehuda Sadeh /* 13135aea3dcdSIlya Dryomov * Close the connection and assign any leftover requests to the 13145aea3dcdSIlya Dryomov * homeless session. 13155aea3dcdSIlya Dryomov */ 13165aea3dcdSIlya Dryomov static void close_osd(struct ceph_osd *osd) 13175aea3dcdSIlya Dryomov { 13185aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 13195aea3dcdSIlya Dryomov struct rb_node *n; 13205aea3dcdSIlya Dryomov 13215aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 13225aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 13235aea3dcdSIlya Dryomov 13245aea3dcdSIlya Dryomov ceph_con_close(&osd->o_con); 13255aea3dcdSIlya Dryomov 13265aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 13275aea3dcdSIlya Dryomov struct ceph_osd_request *req = 13285aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 13295aea3dcdSIlya Dryomov 13305aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 13315aea3dcdSIlya Dryomov 13325aea3dcdSIlya Dryomov dout(" reassigning req %p tid %llu\n", req, req->r_tid); 13335aea3dcdSIlya Dryomov unlink_request(osd, req); 13345aea3dcdSIlya Dryomov link_request(&osdc->homeless_osd, req); 13355aea3dcdSIlya Dryomov } 1336922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 1337922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1338922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 1339922dab61SIlya Dryomov 1340922dab61SIlya Dryomov n = rb_next(n); /* unlink_linger() */ 1341922dab61SIlya Dryomov 1342922dab61SIlya Dryomov dout(" reassigning lreq %p linger_id %llu\n", lreq, 1343922dab61SIlya Dryomov lreq->linger_id); 1344922dab61SIlya Dryomov unlink_linger(osd, lreq); 1345922dab61SIlya Dryomov link_linger(&osdc->homeless_osd, lreq); 1346922dab61SIlya Dryomov } 1347a02a946dSIlya Dryomov clear_backoffs(osd); 13485aea3dcdSIlya Dryomov 13495aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 13505aea3dcdSIlya Dryomov erase_osd(&osdc->osds, osd); 13515aea3dcdSIlya Dryomov put_osd(osd); 13525aea3dcdSIlya Dryomov } 13535aea3dcdSIlya Dryomov 13545aea3dcdSIlya Dryomov /* 13553d14c5d2SYehuda Sadeh * reset osd connect 13563d14c5d2SYehuda Sadeh */ 13575aea3dcdSIlya Dryomov static int reopen_osd(struct ceph_osd *osd) 13583d14c5d2SYehuda Sadeh { 1359c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 13603d14c5d2SYehuda Sadeh 13615aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 13625aea3dcdSIlya Dryomov 13635aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1364922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) { 13655aea3dcdSIlya Dryomov close_osd(osd); 1366c3acb181SAlex Elder return -ENODEV; 1367c3acb181SAlex Elder } 1368c3acb181SAlex Elder 13695aea3dcdSIlya Dryomov peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; 1370c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 13713d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 13725aea3dcdSIlya Dryomov struct rb_node *n; 1373c3acb181SAlex Elder 13743d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 13750b4af2e8SIlya Dryomov "letting msgr retry\n"); 13763d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 13775aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 13785aea3dcdSIlya Dryomov struct ceph_osd_request *req = 13795aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 13803d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 13815aea3dcdSIlya Dryomov } 1382c3acb181SAlex Elder 1383c3acb181SAlex Elder return -EAGAIN; 13843d14c5d2SYehuda Sadeh } 1385c3acb181SAlex Elder 1386c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1387c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1388c3acb181SAlex Elder osd->o_incarnation++; 1389c3acb181SAlex Elder 1390c3acb181SAlex Elder return 0; 13913d14c5d2SYehuda Sadeh } 13923d14c5d2SYehuda Sadeh 13935aea3dcdSIlya Dryomov static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, 13945aea3dcdSIlya Dryomov bool wrlocked) 13953d14c5d2SYehuda Sadeh { 13965aea3dcdSIlya Dryomov struct ceph_osd *osd; 13975aea3dcdSIlya Dryomov 13985aea3dcdSIlya Dryomov if (wrlocked) 13995aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 14005aea3dcdSIlya Dryomov else 14015aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 14025aea3dcdSIlya Dryomov 14035aea3dcdSIlya Dryomov if (o != CEPH_HOMELESS_OSD) 14045aea3dcdSIlya Dryomov osd = lookup_osd(&osdc->osds, o); 14055aea3dcdSIlya Dryomov else 14065aea3dcdSIlya Dryomov osd = &osdc->homeless_osd; 14075aea3dcdSIlya Dryomov if (!osd) { 14085aea3dcdSIlya Dryomov if (!wrlocked) 14095aea3dcdSIlya Dryomov return ERR_PTR(-EAGAIN); 14105aea3dcdSIlya Dryomov 14115aea3dcdSIlya Dryomov osd = create_osd(osdc, o); 14125aea3dcdSIlya Dryomov insert_osd(&osdc->osds, osd); 14135aea3dcdSIlya Dryomov ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, 14145aea3dcdSIlya Dryomov &osdc->osdmap->osd_addr[osd->o_osd]); 14155aea3dcdSIlya Dryomov } 14165aea3dcdSIlya Dryomov 14175aea3dcdSIlya Dryomov dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); 14185aea3dcdSIlya Dryomov return osd; 1419a40c4f10SYehuda Sadeh } 1420a40c4f10SYehuda Sadeh 14213d14c5d2SYehuda Sadeh /* 14225aea3dcdSIlya Dryomov * Create request <-> OSD session relation. 14235aea3dcdSIlya Dryomov * 14245aea3dcdSIlya Dryomov * @req has to be assigned a tid, @osd may be homeless. 14253d14c5d2SYehuda Sadeh */ 14265aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) 14273d14c5d2SYehuda Sadeh { 14285aea3dcdSIlya Dryomov verify_osd_locked(osd); 14295aea3dcdSIlya Dryomov WARN_ON(!req->r_tid || req->r_osd); 14305aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 143135f9f8a0SSage Weil req, req->r_tid); 14325aea3dcdSIlya Dryomov 14335aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 14345aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 14355aea3dcdSIlya Dryomov else 14365aea3dcdSIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 14375aea3dcdSIlya Dryomov 14385aea3dcdSIlya Dryomov get_osd(osd); 143908b8a044SJeff Layton spin_lock(&osd->o_requests_lock); 14405aea3dcdSIlya Dryomov insert_request(&osd->o_requests, req); 144108b8a044SJeff Layton spin_unlock(&osd->o_requests_lock); 14425aea3dcdSIlya Dryomov req->r_osd = osd; 144335f9f8a0SSage Weil } 144435f9f8a0SSage Weil 14455aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) 14463d14c5d2SYehuda Sadeh { 14475aea3dcdSIlya Dryomov verify_osd_locked(osd); 14485aea3dcdSIlya Dryomov WARN_ON(req->r_osd != osd); 14495aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 14505aea3dcdSIlya Dryomov req, req->r_tid); 14515aea3dcdSIlya Dryomov 14525aea3dcdSIlya Dryomov req->r_osd = NULL; 145308b8a044SJeff Layton spin_lock(&osd->o_requests_lock); 14545aea3dcdSIlya Dryomov erase_request(&osd->o_requests, req); 145508b8a044SJeff Layton spin_unlock(&osd->o_requests_lock); 14565aea3dcdSIlya Dryomov put_osd(osd); 14575aea3dcdSIlya Dryomov 14585aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 14595aea3dcdSIlya Dryomov maybe_move_osd_to_lru(osd); 14605aea3dcdSIlya Dryomov else 14615aea3dcdSIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 14623d14c5d2SYehuda Sadeh } 14633d14c5d2SYehuda Sadeh 146463244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 146563244fa1SIlya Dryomov { 146663244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 146763244fa1SIlya Dryomov } 146863244fa1SIlya Dryomov 146942c1b124SIlya Dryomov static bool have_pool_full(struct ceph_osd_client *osdc) 147042c1b124SIlya Dryomov { 147142c1b124SIlya Dryomov struct rb_node *n; 147242c1b124SIlya Dryomov 147342c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 147442c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 147542c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 147642c1b124SIlya Dryomov 147742c1b124SIlya Dryomov if (__pool_full(pi)) 147842c1b124SIlya Dryomov return true; 147942c1b124SIlya Dryomov } 148042c1b124SIlya Dryomov 148142c1b124SIlya Dryomov return false; 148242c1b124SIlya Dryomov } 148342c1b124SIlya Dryomov 14845aea3dcdSIlya Dryomov static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) 14855aea3dcdSIlya Dryomov { 14865aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 14875aea3dcdSIlya Dryomov 14885aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 14895aea3dcdSIlya Dryomov if (!pi) 14905aea3dcdSIlya Dryomov return false; 14915aea3dcdSIlya Dryomov 14925aea3dcdSIlya Dryomov return __pool_full(pi); 14935aea3dcdSIlya Dryomov } 14945aea3dcdSIlya Dryomov 14953d14c5d2SYehuda Sadeh /* 1496d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1497d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1498d29adb34SJosh Durgin */ 149963244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 150063244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 150163244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 150263244fa1SIlya Dryomov { 1503b7ec35b3SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 1504b7ec35b3SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 1505b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 150663244fa1SIlya Dryomov __pool_full(pi); 150763244fa1SIlya Dryomov 15086d637a54SIlya Dryomov WARN_ON(pi->id != t->target_oloc.pool); 150958eb7932SJeff Layton return ((t->flags & CEPH_OSD_FLAG_READ) && pauserd) || 151058eb7932SJeff Layton ((t->flags & CEPH_OSD_FLAG_WRITE) && pausewr) || 151158eb7932SJeff Layton (osdc->osdmap->epoch < osdc->epoch_barrier); 151263244fa1SIlya Dryomov } 151363244fa1SIlya Dryomov 1514117d96a0SIlya Dryomov static int pick_random_replica(const struct ceph_osds *acting) 1515117d96a0SIlya Dryomov { 15168032bf12SJason A. Donenfeld int i = get_random_u32_below(acting->size); 1517117d96a0SIlya Dryomov 1518117d96a0SIlya Dryomov dout("%s picked osd%d, primary osd%d\n", __func__, 1519117d96a0SIlya Dryomov acting->osds[i], acting->primary); 1520117d96a0SIlya Dryomov return i; 1521117d96a0SIlya Dryomov } 1522117d96a0SIlya Dryomov 1523117d96a0SIlya Dryomov /* 1524117d96a0SIlya Dryomov * Picks the closest replica based on client's location given by 1525117d96a0SIlya Dryomov * crush_location option. Prefers the primary if the locality is 1526117d96a0SIlya Dryomov * the same. 1527117d96a0SIlya Dryomov */ 1528117d96a0SIlya Dryomov static int pick_closest_replica(struct ceph_osd_client *osdc, 1529117d96a0SIlya Dryomov const struct ceph_osds *acting) 1530117d96a0SIlya Dryomov { 1531117d96a0SIlya Dryomov struct ceph_options *opt = osdc->client->options; 1532117d96a0SIlya Dryomov int best_i, best_locality; 1533117d96a0SIlya Dryomov int i = 0, locality; 1534117d96a0SIlya Dryomov 1535117d96a0SIlya Dryomov do { 1536117d96a0SIlya Dryomov locality = ceph_get_crush_locality(osdc->osdmap, 1537117d96a0SIlya Dryomov acting->osds[i], 1538117d96a0SIlya Dryomov &opt->crush_locs); 1539117d96a0SIlya Dryomov if (i == 0 || 1540117d96a0SIlya Dryomov (locality >= 0 && best_locality < 0) || 1541117d96a0SIlya Dryomov (locality >= 0 && best_locality >= 0 && 1542117d96a0SIlya Dryomov locality < best_locality)) { 1543117d96a0SIlya Dryomov best_i = i; 1544117d96a0SIlya Dryomov best_locality = locality; 1545117d96a0SIlya Dryomov } 1546117d96a0SIlya Dryomov } while (++i < acting->size); 1547117d96a0SIlya Dryomov 1548117d96a0SIlya Dryomov dout("%s picked osd%d with locality %d, primary osd%d\n", __func__, 1549117d96a0SIlya Dryomov acting->osds[best_i], best_locality, acting->primary); 1550117d96a0SIlya Dryomov return best_i; 1551117d96a0SIlya Dryomov } 1552117d96a0SIlya Dryomov 155363244fa1SIlya Dryomov enum calc_target_result { 155463244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 155563244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 155663244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 155763244fa1SIlya Dryomov }; 155863244fa1SIlya Dryomov 155963244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 156063244fa1SIlya Dryomov struct ceph_osd_request_target *t, 156163244fa1SIlya Dryomov bool any_change) 156263244fa1SIlya Dryomov { 156363244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 156463244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 156563244fa1SIlya Dryomov struct ceph_osds up, acting; 1566117d96a0SIlya Dryomov bool is_read = t->flags & CEPH_OSD_FLAG_READ; 1567117d96a0SIlya Dryomov bool is_write = t->flags & CEPH_OSD_FLAG_WRITE; 156863244fa1SIlya Dryomov bool force_resend = false; 156984ed45dfSIlya Dryomov bool unpaused = false; 1570a5613724SIlya Dryomov bool legacy_change = false; 15717de030d6SIlya Dryomov bool split = false; 1572b7ec35b3SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); 1573ae78dd81SIlya Dryomov bool recovery_deletes = ceph_osdmap_flag(osdc, 1574ae78dd81SIlya Dryomov CEPH_OSDMAP_RECOVERY_DELETES); 157563244fa1SIlya Dryomov enum calc_target_result ct_res; 157663244fa1SIlya Dryomov 157704c7d789SIlya Dryomov t->epoch = osdc->osdmap->epoch; 157863244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 157963244fa1SIlya Dryomov if (!pi) { 158063244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 158163244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 158263244fa1SIlya Dryomov goto out; 158363244fa1SIlya Dryomov } 158463244fa1SIlya Dryomov 158563244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 1586dc93e0e2SIlya Dryomov if (t->last_force_resend < pi->last_force_request_resend) { 1587dc93e0e2SIlya Dryomov t->last_force_resend = pi->last_force_request_resend; 158863244fa1SIlya Dryomov force_resend = true; 1589dc93e0e2SIlya Dryomov } else if (t->last_force_resend == 0) { 159063244fa1SIlya Dryomov force_resend = true; 159163244fa1SIlya Dryomov } 159263244fa1SIlya Dryomov } 159363244fa1SIlya Dryomov 1594db098ec4SIlya Dryomov /* apply tiering */ 1595db098ec4SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 1596db098ec4SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 1597db098ec4SIlya Dryomov if ((t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 1598117d96a0SIlya Dryomov if (is_read && pi->read_tier >= 0) 159963244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 1600117d96a0SIlya Dryomov if (is_write && pi->write_tier >= 0) 160163244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 16026d637a54SIlya Dryomov 16036d637a54SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->target_oloc.pool); 16046d637a54SIlya Dryomov if (!pi) { 16056d637a54SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 16066d637a54SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 16076d637a54SIlya Dryomov goto out; 16086d637a54SIlya Dryomov } 160963244fa1SIlya Dryomov } 161063244fa1SIlya Dryomov 1611a86f009fSIlya Dryomov __ceph_object_locator_to_pg(pi, &t->target_oid, &t->target_oloc, &pgid); 161263244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 161363244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 161463244fa1SIlya Dryomov 1615df28152dSIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, pi, &pgid, &up, &acting); 161663244fa1SIlya Dryomov if (any_change && 161763244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 161863244fa1SIlya Dryomov &acting, 161963244fa1SIlya Dryomov &t->up, 162063244fa1SIlya Dryomov &up, 162163244fa1SIlya Dryomov t->size, 162263244fa1SIlya Dryomov pi->size, 162363244fa1SIlya Dryomov t->min_size, 162463244fa1SIlya Dryomov pi->min_size, 162563244fa1SIlya Dryomov t->pg_num, 162663244fa1SIlya Dryomov pi->pg_num, 162763244fa1SIlya Dryomov t->sort_bitwise, 162863244fa1SIlya Dryomov sort_bitwise, 1629ae78dd81SIlya Dryomov t->recovery_deletes, 1630ae78dd81SIlya Dryomov recovery_deletes, 163163244fa1SIlya Dryomov &last_pgid)) 163263244fa1SIlya Dryomov force_resend = true; 163363244fa1SIlya Dryomov 163463244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 163563244fa1SIlya Dryomov t->paused = false; 163684ed45dfSIlya Dryomov unpaused = true; 163763244fa1SIlya Dryomov } 163884ed45dfSIlya Dryomov legacy_change = ceph_pg_compare(&t->pgid, &pgid) || 1639117d96a0SIlya Dryomov ceph_osds_changed(&t->acting, &acting, 1640117d96a0SIlya Dryomov t->used_replica || any_change); 16417de030d6SIlya Dryomov if (t->pg_num) 16427de030d6SIlya Dryomov split = ceph_pg_is_split(&last_pgid, t->pg_num, pi->pg_num); 164363244fa1SIlya Dryomov 16447de030d6SIlya Dryomov if (legacy_change || force_resend || split) { 164563244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 1646df28152dSIlya Dryomov ceph_pg_to_primary_shard(osdc->osdmap, pi, &pgid, &t->spgid); 164763244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 164863244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 164963244fa1SIlya Dryomov t->size = pi->size; 165063244fa1SIlya Dryomov t->min_size = pi->min_size; 165163244fa1SIlya Dryomov t->pg_num = pi->pg_num; 165263244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 165363244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 1654ae78dd81SIlya Dryomov t->recovery_deletes = recovery_deletes; 165563244fa1SIlya Dryomov 1656117d96a0SIlya Dryomov if ((t->flags & (CEPH_OSD_FLAG_BALANCE_READS | 1657117d96a0SIlya Dryomov CEPH_OSD_FLAG_LOCALIZE_READS)) && 1658117d96a0SIlya Dryomov !is_write && pi->type == CEPH_POOL_TYPE_REP && 1659117d96a0SIlya Dryomov acting.size > 1) { 1660117d96a0SIlya Dryomov int pos; 1661117d96a0SIlya Dryomov 1662117d96a0SIlya Dryomov WARN_ON(!is_read || acting.osds[0] != acting.primary); 1663117d96a0SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_BALANCE_READS) { 1664117d96a0SIlya Dryomov pos = pick_random_replica(&acting); 1665117d96a0SIlya Dryomov } else { 1666117d96a0SIlya Dryomov pos = pick_closest_replica(osdc, &acting); 1667117d96a0SIlya Dryomov } 1668117d96a0SIlya Dryomov t->osd = acting.osds[pos]; 1669117d96a0SIlya Dryomov t->used_replica = pos > 0; 1670117d96a0SIlya Dryomov } else { 167163244fa1SIlya Dryomov t->osd = acting.primary; 1672117d96a0SIlya Dryomov t->used_replica = false; 1673117d96a0SIlya Dryomov } 167463244fa1SIlya Dryomov } 167563244fa1SIlya Dryomov 1676a5613724SIlya Dryomov if (unpaused || legacy_change || force_resend || split) 167784ed45dfSIlya Dryomov ct_res = CALC_TARGET_NEED_RESEND; 167884ed45dfSIlya Dryomov else 167984ed45dfSIlya Dryomov ct_res = CALC_TARGET_NO_ACTION; 168084ed45dfSIlya Dryomov 168163244fa1SIlya Dryomov out: 1682a5613724SIlya Dryomov dout("%s t %p -> %d%d%d%d ct_res %d osd%d\n", __func__, t, unpaused, 1683a5613724SIlya Dryomov legacy_change, force_resend, split, ct_res, t->osd); 168463244fa1SIlya Dryomov return ct_res; 168563244fa1SIlya Dryomov } 168663244fa1SIlya Dryomov 1687a02a946dSIlya Dryomov static struct ceph_spg_mapping *alloc_spg_mapping(void) 1688a02a946dSIlya Dryomov { 1689a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1690a02a946dSIlya Dryomov 1691a02a946dSIlya Dryomov spg = kmalloc(sizeof(*spg), GFP_NOIO); 1692a02a946dSIlya Dryomov if (!spg) 1693a02a946dSIlya Dryomov return NULL; 1694a02a946dSIlya Dryomov 1695a02a946dSIlya Dryomov RB_CLEAR_NODE(&spg->node); 1696a02a946dSIlya Dryomov spg->backoffs = RB_ROOT; 1697a02a946dSIlya Dryomov return spg; 1698a02a946dSIlya Dryomov } 1699a02a946dSIlya Dryomov 1700a02a946dSIlya Dryomov static void free_spg_mapping(struct ceph_spg_mapping *spg) 1701a02a946dSIlya Dryomov { 1702a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&spg->node)); 1703a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&spg->backoffs)); 1704a02a946dSIlya Dryomov 1705a02a946dSIlya Dryomov kfree(spg); 1706a02a946dSIlya Dryomov } 1707a02a946dSIlya Dryomov 1708a02a946dSIlya Dryomov /* 1709a02a946dSIlya Dryomov * rbtree of ceph_spg_mapping for handling map<spg_t, ...>, similar to 1710a02a946dSIlya Dryomov * ceph_pg_mapping. Used to track OSD backoffs -- a backoff [range] is 1711a02a946dSIlya Dryomov * defined only within a specific spgid; it does not pass anything to 1712a02a946dSIlya Dryomov * children on split, or to another primary. 1713a02a946dSIlya Dryomov */ 1714a02a946dSIlya Dryomov DEFINE_RB_FUNCS2(spg_mapping, struct ceph_spg_mapping, spgid, ceph_spg_compare, 1715a02a946dSIlya Dryomov RB_BYPTR, const struct ceph_spg *, node) 1716a02a946dSIlya Dryomov 1717a02a946dSIlya Dryomov static u64 hoid_get_bitwise_key(const struct ceph_hobject_id *hoid) 1718a02a946dSIlya Dryomov { 1719a02a946dSIlya Dryomov return hoid->is_max ? 0x100000000ull : hoid->hash_reverse_bits; 1720a02a946dSIlya Dryomov } 1721a02a946dSIlya Dryomov 1722a02a946dSIlya Dryomov static void hoid_get_effective_key(const struct ceph_hobject_id *hoid, 1723a02a946dSIlya Dryomov void **pkey, size_t *pkey_len) 1724a02a946dSIlya Dryomov { 1725a02a946dSIlya Dryomov if (hoid->key_len) { 1726a02a946dSIlya Dryomov *pkey = hoid->key; 1727a02a946dSIlya Dryomov *pkey_len = hoid->key_len; 1728a02a946dSIlya Dryomov } else { 1729a02a946dSIlya Dryomov *pkey = hoid->oid; 1730a02a946dSIlya Dryomov *pkey_len = hoid->oid_len; 1731a02a946dSIlya Dryomov } 1732a02a946dSIlya Dryomov } 1733a02a946dSIlya Dryomov 1734a02a946dSIlya Dryomov static int compare_names(const void *name1, size_t name1_len, 1735a02a946dSIlya Dryomov const void *name2, size_t name2_len) 1736a02a946dSIlya Dryomov { 1737a02a946dSIlya Dryomov int ret; 1738a02a946dSIlya Dryomov 1739a02a946dSIlya Dryomov ret = memcmp(name1, name2, min(name1_len, name2_len)); 1740a02a946dSIlya Dryomov if (!ret) { 1741a02a946dSIlya Dryomov if (name1_len < name2_len) 1742a02a946dSIlya Dryomov ret = -1; 1743a02a946dSIlya Dryomov else if (name1_len > name2_len) 1744a02a946dSIlya Dryomov ret = 1; 1745a02a946dSIlya Dryomov } 1746a02a946dSIlya Dryomov return ret; 1747a02a946dSIlya Dryomov } 1748a02a946dSIlya Dryomov 1749a02a946dSIlya Dryomov static int hoid_compare(const struct ceph_hobject_id *lhs, 1750a02a946dSIlya Dryomov const struct ceph_hobject_id *rhs) 1751a02a946dSIlya Dryomov { 1752a02a946dSIlya Dryomov void *effective_key1, *effective_key2; 1753a02a946dSIlya Dryomov size_t effective_key1_len, effective_key2_len; 1754a02a946dSIlya Dryomov int ret; 1755a02a946dSIlya Dryomov 1756a02a946dSIlya Dryomov if (lhs->is_max < rhs->is_max) 1757a02a946dSIlya Dryomov return -1; 1758a02a946dSIlya Dryomov if (lhs->is_max > rhs->is_max) 1759a02a946dSIlya Dryomov return 1; 1760a02a946dSIlya Dryomov 1761a02a946dSIlya Dryomov if (lhs->pool < rhs->pool) 1762a02a946dSIlya Dryomov return -1; 1763a02a946dSIlya Dryomov if (lhs->pool > rhs->pool) 1764a02a946dSIlya Dryomov return 1; 1765a02a946dSIlya Dryomov 1766a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) < hoid_get_bitwise_key(rhs)) 1767a02a946dSIlya Dryomov return -1; 1768a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) > hoid_get_bitwise_key(rhs)) 1769a02a946dSIlya Dryomov return 1; 1770a02a946dSIlya Dryomov 1771a02a946dSIlya Dryomov ret = compare_names(lhs->nspace, lhs->nspace_len, 1772a02a946dSIlya Dryomov rhs->nspace, rhs->nspace_len); 1773a02a946dSIlya Dryomov if (ret) 1774a02a946dSIlya Dryomov return ret; 1775a02a946dSIlya Dryomov 1776a02a946dSIlya Dryomov hoid_get_effective_key(lhs, &effective_key1, &effective_key1_len); 1777a02a946dSIlya Dryomov hoid_get_effective_key(rhs, &effective_key2, &effective_key2_len); 1778a02a946dSIlya Dryomov ret = compare_names(effective_key1, effective_key1_len, 1779a02a946dSIlya Dryomov effective_key2, effective_key2_len); 1780a02a946dSIlya Dryomov if (ret) 1781a02a946dSIlya Dryomov return ret; 1782a02a946dSIlya Dryomov 1783a02a946dSIlya Dryomov ret = compare_names(lhs->oid, lhs->oid_len, rhs->oid, rhs->oid_len); 1784a02a946dSIlya Dryomov if (ret) 1785a02a946dSIlya Dryomov return ret; 1786a02a946dSIlya Dryomov 1787a02a946dSIlya Dryomov if (lhs->snapid < rhs->snapid) 1788a02a946dSIlya Dryomov return -1; 1789a02a946dSIlya Dryomov if (lhs->snapid > rhs->snapid) 1790a02a946dSIlya Dryomov return 1; 1791a02a946dSIlya Dryomov 1792a02a946dSIlya Dryomov return 0; 1793a02a946dSIlya Dryomov } 1794a02a946dSIlya Dryomov 1795a02a946dSIlya Dryomov /* 1796a02a946dSIlya Dryomov * For decoding ->begin and ->end of MOSDBackoff only -- no MIN/MAX 1797a02a946dSIlya Dryomov * compat stuff here. 1798a02a946dSIlya Dryomov * 1799a02a946dSIlya Dryomov * Assumes @hoid is zero-initialized. 1800a02a946dSIlya Dryomov */ 1801a02a946dSIlya Dryomov static int decode_hoid(void **p, void *end, struct ceph_hobject_id *hoid) 1802a02a946dSIlya Dryomov { 1803a02a946dSIlya Dryomov u8 struct_v; 1804a02a946dSIlya Dryomov u32 struct_len; 1805a02a946dSIlya Dryomov int ret; 1806a02a946dSIlya Dryomov 1807a02a946dSIlya Dryomov ret = ceph_start_decoding(p, end, 4, "hobject_t", &struct_v, 1808a02a946dSIlya Dryomov &struct_len); 1809a02a946dSIlya Dryomov if (ret) 1810a02a946dSIlya Dryomov return ret; 1811a02a946dSIlya Dryomov 1812a02a946dSIlya Dryomov if (struct_v < 4) { 1813a02a946dSIlya Dryomov pr_err("got struct_v %d < 4 of hobject_t\n", struct_v); 1814a02a946dSIlya Dryomov goto e_inval; 1815a02a946dSIlya Dryomov } 1816a02a946dSIlya Dryomov 1817a02a946dSIlya Dryomov hoid->key = ceph_extract_encoded_string(p, end, &hoid->key_len, 1818a02a946dSIlya Dryomov GFP_NOIO); 1819a02a946dSIlya Dryomov if (IS_ERR(hoid->key)) { 1820a02a946dSIlya Dryomov ret = PTR_ERR(hoid->key); 1821a02a946dSIlya Dryomov hoid->key = NULL; 1822a02a946dSIlya Dryomov return ret; 1823a02a946dSIlya Dryomov } 1824a02a946dSIlya Dryomov 1825a02a946dSIlya Dryomov hoid->oid = ceph_extract_encoded_string(p, end, &hoid->oid_len, 1826a02a946dSIlya Dryomov GFP_NOIO); 1827a02a946dSIlya Dryomov if (IS_ERR(hoid->oid)) { 1828a02a946dSIlya Dryomov ret = PTR_ERR(hoid->oid); 1829a02a946dSIlya Dryomov hoid->oid = NULL; 1830a02a946dSIlya Dryomov return ret; 1831a02a946dSIlya Dryomov } 1832a02a946dSIlya Dryomov 1833a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->snapid, e_inval); 1834a02a946dSIlya Dryomov ceph_decode_32_safe(p, end, hoid->hash, e_inval); 1835a02a946dSIlya Dryomov ceph_decode_8_safe(p, end, hoid->is_max, e_inval); 1836a02a946dSIlya Dryomov 1837a02a946dSIlya Dryomov hoid->nspace = ceph_extract_encoded_string(p, end, &hoid->nspace_len, 1838a02a946dSIlya Dryomov GFP_NOIO); 1839a02a946dSIlya Dryomov if (IS_ERR(hoid->nspace)) { 1840a02a946dSIlya Dryomov ret = PTR_ERR(hoid->nspace); 1841a02a946dSIlya Dryomov hoid->nspace = NULL; 1842a02a946dSIlya Dryomov return ret; 1843a02a946dSIlya Dryomov } 1844a02a946dSIlya Dryomov 1845a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->pool, e_inval); 1846a02a946dSIlya Dryomov 1847a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1848a02a946dSIlya Dryomov return 0; 1849a02a946dSIlya Dryomov 1850a02a946dSIlya Dryomov e_inval: 1851a02a946dSIlya Dryomov return -EINVAL; 1852a02a946dSIlya Dryomov } 1853a02a946dSIlya Dryomov 1854a02a946dSIlya Dryomov static int hoid_encoding_size(const struct ceph_hobject_id *hoid) 1855a02a946dSIlya Dryomov { 1856a02a946dSIlya Dryomov return 8 + 4 + 1 + 8 + /* snapid, hash, is_max, pool */ 1857a02a946dSIlya Dryomov 4 + hoid->key_len + 4 + hoid->oid_len + 4 + hoid->nspace_len; 1858a02a946dSIlya Dryomov } 1859a02a946dSIlya Dryomov 1860a02a946dSIlya Dryomov static void encode_hoid(void **p, void *end, const struct ceph_hobject_id *hoid) 1861a02a946dSIlya Dryomov { 1862a02a946dSIlya Dryomov ceph_start_encoding(p, 4, 3, hoid_encoding_size(hoid)); 1863a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->key, hoid->key_len); 1864a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->oid, hoid->oid_len); 1865a02a946dSIlya Dryomov ceph_encode_64(p, hoid->snapid); 1866a02a946dSIlya Dryomov ceph_encode_32(p, hoid->hash); 1867a02a946dSIlya Dryomov ceph_encode_8(p, hoid->is_max); 1868a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->nspace, hoid->nspace_len); 1869a02a946dSIlya Dryomov ceph_encode_64(p, hoid->pool); 1870a02a946dSIlya Dryomov } 1871a02a946dSIlya Dryomov 1872a02a946dSIlya Dryomov static void free_hoid(struct ceph_hobject_id *hoid) 1873a02a946dSIlya Dryomov { 1874a02a946dSIlya Dryomov if (hoid) { 1875a02a946dSIlya Dryomov kfree(hoid->key); 1876a02a946dSIlya Dryomov kfree(hoid->oid); 1877a02a946dSIlya Dryomov kfree(hoid->nspace); 1878a02a946dSIlya Dryomov kfree(hoid); 1879a02a946dSIlya Dryomov } 1880a02a946dSIlya Dryomov } 1881a02a946dSIlya Dryomov 1882a02a946dSIlya Dryomov static struct ceph_osd_backoff *alloc_backoff(void) 1883a02a946dSIlya Dryomov { 1884a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1885a02a946dSIlya Dryomov 1886a02a946dSIlya Dryomov backoff = kzalloc(sizeof(*backoff), GFP_NOIO); 1887a02a946dSIlya Dryomov if (!backoff) 1888a02a946dSIlya Dryomov return NULL; 1889a02a946dSIlya Dryomov 1890a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->spg_node); 1891a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->id_node); 1892a02a946dSIlya Dryomov return backoff; 1893a02a946dSIlya Dryomov } 1894a02a946dSIlya Dryomov 1895a02a946dSIlya Dryomov static void free_backoff(struct ceph_osd_backoff *backoff) 1896a02a946dSIlya Dryomov { 1897a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->spg_node)); 1898a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->id_node)); 1899a02a946dSIlya Dryomov 1900a02a946dSIlya Dryomov free_hoid(backoff->begin); 1901a02a946dSIlya Dryomov free_hoid(backoff->end); 1902a02a946dSIlya Dryomov kfree(backoff); 1903a02a946dSIlya Dryomov } 1904a02a946dSIlya Dryomov 1905a02a946dSIlya Dryomov /* 1906a02a946dSIlya Dryomov * Within a specific spgid, backoffs are managed by ->begin hoid. 1907a02a946dSIlya Dryomov */ 1908a02a946dSIlya Dryomov DEFINE_RB_INSDEL_FUNCS2(backoff, struct ceph_osd_backoff, begin, hoid_compare, 1909a02a946dSIlya Dryomov RB_BYVAL, spg_node); 1910a02a946dSIlya Dryomov 1911a02a946dSIlya Dryomov static struct ceph_osd_backoff *lookup_containing_backoff(struct rb_root *root, 1912a02a946dSIlya Dryomov const struct ceph_hobject_id *hoid) 1913a02a946dSIlya Dryomov { 1914a02a946dSIlya Dryomov struct rb_node *n = root->rb_node; 1915a02a946dSIlya Dryomov 1916a02a946dSIlya Dryomov while (n) { 1917a02a946dSIlya Dryomov struct ceph_osd_backoff *cur = 1918a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_backoff, spg_node); 1919a02a946dSIlya Dryomov int cmp; 1920a02a946dSIlya Dryomov 1921a02a946dSIlya Dryomov cmp = hoid_compare(hoid, cur->begin); 1922a02a946dSIlya Dryomov if (cmp < 0) { 1923a02a946dSIlya Dryomov n = n->rb_left; 1924a02a946dSIlya Dryomov } else if (cmp > 0) { 1925a02a946dSIlya Dryomov if (hoid_compare(hoid, cur->end) < 0) 1926a02a946dSIlya Dryomov return cur; 1927a02a946dSIlya Dryomov 1928a02a946dSIlya Dryomov n = n->rb_right; 1929a02a946dSIlya Dryomov } else { 1930a02a946dSIlya Dryomov return cur; 1931a02a946dSIlya Dryomov } 1932a02a946dSIlya Dryomov } 1933a02a946dSIlya Dryomov 1934a02a946dSIlya Dryomov return NULL; 1935a02a946dSIlya Dryomov } 1936a02a946dSIlya Dryomov 1937a02a946dSIlya Dryomov /* 1938a02a946dSIlya Dryomov * Each backoff has a unique id within its OSD session. 1939a02a946dSIlya Dryomov */ 1940a02a946dSIlya Dryomov DEFINE_RB_FUNCS(backoff_by_id, struct ceph_osd_backoff, id, id_node) 1941a02a946dSIlya Dryomov 1942a02a946dSIlya Dryomov static void clear_backoffs(struct ceph_osd *osd) 1943a02a946dSIlya Dryomov { 1944a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&osd->o_backoff_mappings)) { 1945a02a946dSIlya Dryomov struct ceph_spg_mapping *spg = 1946a02a946dSIlya Dryomov rb_entry(rb_first(&osd->o_backoff_mappings), 1947a02a946dSIlya Dryomov struct ceph_spg_mapping, node); 1948a02a946dSIlya Dryomov 1949a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&spg->backoffs)) { 1950a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff = 1951a02a946dSIlya Dryomov rb_entry(rb_first(&spg->backoffs), 1952a02a946dSIlya Dryomov struct ceph_osd_backoff, spg_node); 1953a02a946dSIlya Dryomov 1954a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 1955a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 1956a02a946dSIlya Dryomov free_backoff(backoff); 1957a02a946dSIlya Dryomov } 1958a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 1959a02a946dSIlya Dryomov free_spg_mapping(spg); 1960a02a946dSIlya Dryomov } 1961a02a946dSIlya Dryomov } 1962a02a946dSIlya Dryomov 1963a02a946dSIlya Dryomov /* 1964a02a946dSIlya Dryomov * Set up a temporary, non-owning view into @t. 1965a02a946dSIlya Dryomov */ 1966a02a946dSIlya Dryomov static void hoid_fill_from_target(struct ceph_hobject_id *hoid, 1967a02a946dSIlya Dryomov const struct ceph_osd_request_target *t) 1968a02a946dSIlya Dryomov { 1969a02a946dSIlya Dryomov hoid->key = NULL; 1970a02a946dSIlya Dryomov hoid->key_len = 0; 1971a02a946dSIlya Dryomov hoid->oid = t->target_oid.name; 1972a02a946dSIlya Dryomov hoid->oid_len = t->target_oid.name_len; 1973a02a946dSIlya Dryomov hoid->snapid = CEPH_NOSNAP; 1974a02a946dSIlya Dryomov hoid->hash = t->pgid.seed; 1975a02a946dSIlya Dryomov hoid->is_max = false; 1976a02a946dSIlya Dryomov if (t->target_oloc.pool_ns) { 1977a02a946dSIlya Dryomov hoid->nspace = t->target_oloc.pool_ns->str; 1978a02a946dSIlya Dryomov hoid->nspace_len = t->target_oloc.pool_ns->len; 1979a02a946dSIlya Dryomov } else { 1980a02a946dSIlya Dryomov hoid->nspace = NULL; 1981a02a946dSIlya Dryomov hoid->nspace_len = 0; 1982a02a946dSIlya Dryomov } 1983a02a946dSIlya Dryomov hoid->pool = t->target_oloc.pool; 1984a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1985a02a946dSIlya Dryomov } 1986a02a946dSIlya Dryomov 1987a02a946dSIlya Dryomov static bool should_plug_request(struct ceph_osd_request *req) 1988a02a946dSIlya Dryomov { 1989a02a946dSIlya Dryomov struct ceph_osd *osd = req->r_osd; 1990a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1991a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1992a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 1993a02a946dSIlya Dryomov 1994a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &req->r_t.spgid); 1995a02a946dSIlya Dryomov if (!spg) 1996a02a946dSIlya Dryomov return false; 1997a02a946dSIlya Dryomov 1998a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, &req->r_t); 1999a02a946dSIlya Dryomov backoff = lookup_containing_backoff(&spg->backoffs, &hoid); 2000a02a946dSIlya Dryomov if (!backoff) 2001a02a946dSIlya Dryomov return false; 2002a02a946dSIlya Dryomov 2003a02a946dSIlya Dryomov dout("%s req %p tid %llu backoff osd%d spgid %llu.%xs%d id %llu\n", 2004a02a946dSIlya Dryomov __func__, req, req->r_tid, osd->o_osd, backoff->spgid.pgid.pool, 2005a02a946dSIlya Dryomov backoff->spgid.pgid.seed, backoff->spgid.shard, backoff->id); 2006a02a946dSIlya Dryomov return true; 2007a02a946dSIlya Dryomov } 2008a02a946dSIlya Dryomov 20090d9c1ab3SIlya Dryomov /* 20100d9c1ab3SIlya Dryomov * Keep get_num_data_items() in sync with this function. 20110d9c1ab3SIlya Dryomov */ 201298c4bfe9SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req) 20133d14c5d2SYehuda Sadeh { 201498c4bfe9SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 201598c4bfe9SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 201698c4bfe9SIlya Dryomov struct ceph_osd_req_op *op; 20173d14c5d2SYehuda Sadeh 201898c4bfe9SIlya Dryomov if (req->r_request->num_data_items || req->r_reply->num_data_items) 2019bb873b53SIlya Dryomov return; 20203d14c5d2SYehuda Sadeh 202198c4bfe9SIlya Dryomov WARN_ON(request_msg->data_length || reply_msg->data_length); 202298c4bfe9SIlya Dryomov for (op = req->r_ops; op != &req->r_ops[req->r_num_ops]; op++) { 2023bb873b53SIlya Dryomov switch (op->op) { 2024bb873b53SIlya Dryomov /* request */ 2025bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 2026bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 2027bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 202898c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 202998c4bfe9SIlya Dryomov &op->extent.osd_data); 2030bb873b53SIlya Dryomov break; 2031bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 2032bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 2033bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 2034bb873b53SIlya Dryomov op->xattr.value_len); 203598c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 203698c4bfe9SIlya Dryomov &op->xattr.osd_data); 2037bb873b53SIlya Dryomov break; 2038922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 203998c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 2040922dab61SIlya Dryomov &op->notify_ack.request_data); 2041922dab61SIlya Dryomov break; 204278beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 204323ddf9beSLuis Henriques ceph_osdc_msg_data_add(request_msg, 204423ddf9beSLuis Henriques &op->copy_from.osd_data); 204523ddf9beSLuis Henriques break; 2046bb873b53SIlya Dryomov 2047bb873b53SIlya Dryomov /* reply */ 2048bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 204998c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 2050bb873b53SIlya Dryomov &op->raw_data_in); 2051bb873b53SIlya Dryomov break; 2052bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 2053*f628d799SJeff Layton case CEPH_OSD_OP_SPARSE_READ: 205498c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 2055bb873b53SIlya Dryomov &op->extent.osd_data); 2056bb873b53SIlya Dryomov break; 2057a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 205898c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 2059a4ed38d7SDouglas Fuller &op->list_watchers.response_data); 2060a4ed38d7SDouglas Fuller break; 2061bb873b53SIlya Dryomov 2062bb873b53SIlya Dryomov /* both */ 2063bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 2064bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 2065bb873b53SIlya Dryomov op->cls.method_len + 2066bb873b53SIlya Dryomov op->cls.indata_len); 206798c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 206898c4bfe9SIlya Dryomov &op->cls.request_info); 2069bb873b53SIlya Dryomov /* optional, can be NONE */ 207098c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 207198c4bfe9SIlya Dryomov &op->cls.request_data); 2072bb873b53SIlya Dryomov /* optional, can be NONE */ 207398c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 2074bb873b53SIlya Dryomov &op->cls.response_data); 2075bb873b53SIlya Dryomov break; 207619079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 207798c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 207819079203SIlya Dryomov &op->notify.request_data); 207998c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 208019079203SIlya Dryomov &op->notify.response_data); 208119079203SIlya Dryomov break; 2082bb873b53SIlya Dryomov } 2083bb873b53SIlya Dryomov } 2084bb873b53SIlya Dryomov } 2085bb873b53SIlya Dryomov 20862e59ffd1SIlya Dryomov static void encode_pgid(void **p, const struct ceph_pg *pgid) 20872e59ffd1SIlya Dryomov { 20882e59ffd1SIlya Dryomov ceph_encode_8(p, 1); 20892e59ffd1SIlya Dryomov ceph_encode_64(p, pgid->pool); 20902e59ffd1SIlya Dryomov ceph_encode_32(p, pgid->seed); 20912e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 20922e59ffd1SIlya Dryomov } 20932e59ffd1SIlya Dryomov 20948cb441c0SIlya Dryomov static void encode_spgid(void **p, const struct ceph_spg *spgid) 20958cb441c0SIlya Dryomov { 20968cb441c0SIlya Dryomov ceph_start_encoding(p, 1, 1, CEPH_PGID_ENCODING_LEN + 1); 20978cb441c0SIlya Dryomov encode_pgid(p, &spgid->pgid); 20988cb441c0SIlya Dryomov ceph_encode_8(p, spgid->shard); 20998cb441c0SIlya Dryomov } 21008cb441c0SIlya Dryomov 21012e59ffd1SIlya Dryomov static void encode_oloc(void **p, void *end, 21022e59ffd1SIlya Dryomov const struct ceph_object_locator *oloc) 21032e59ffd1SIlya Dryomov { 21042e59ffd1SIlya Dryomov ceph_start_encoding(p, 5, 4, ceph_oloc_encoding_size(oloc)); 21052e59ffd1SIlya Dryomov ceph_encode_64(p, oloc->pool); 21062e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 21072e59ffd1SIlya Dryomov ceph_encode_32(p, 0); /* key len */ 21082e59ffd1SIlya Dryomov if (oloc->pool_ns) 21092e59ffd1SIlya Dryomov ceph_encode_string(p, end, oloc->pool_ns->str, 21102e59ffd1SIlya Dryomov oloc->pool_ns->len); 21112e59ffd1SIlya Dryomov else 21122e59ffd1SIlya Dryomov ceph_encode_32(p, 0); 21132e59ffd1SIlya Dryomov } 21142e59ffd1SIlya Dryomov 21158cb441c0SIlya Dryomov static void encode_request_partial(struct ceph_osd_request *req, 21168cb441c0SIlya Dryomov struct ceph_msg *msg) 2117bb873b53SIlya Dryomov { 2118bb873b53SIlya Dryomov void *p = msg->front.iov_base; 2119bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 2120bb873b53SIlya Dryomov u32 data_len = 0; 2121bb873b53SIlya Dryomov int i; 2122bb873b53SIlya Dryomov 2123bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 2124bb873b53SIlya Dryomov /* snapshots aren't writeable */ 2125bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 2126bb873b53SIlya Dryomov } else { 2127bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 2128bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 2129bb873b53SIlya Dryomov } 2130bb873b53SIlya Dryomov 213198c4bfe9SIlya Dryomov setup_request_data(req); 2132bb873b53SIlya Dryomov 21338cb441c0SIlya Dryomov encode_spgid(&p, &req->r_t.spgid); /* actual spg */ 21348cb441c0SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); /* raw hash */ 2135bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 2136bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 21378cb441c0SIlya Dryomov 21388cb441c0SIlya Dryomov /* reqid */ 21398cb441c0SIlya Dryomov ceph_start_encoding(&p, 2, 2, sizeof(struct ceph_osd_reqid)); 21408cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_osd_reqid)); 21418cb441c0SIlya Dryomov p += sizeof(struct ceph_osd_reqid); 21428cb441c0SIlya Dryomov 21438cb441c0SIlya Dryomov /* trace */ 21448cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_blkin_trace_info)); 21458cb441c0SIlya Dryomov p += sizeof(struct ceph_blkin_trace_info); 21468cb441c0SIlya Dryomov 21478cb441c0SIlya Dryomov ceph_encode_32(&p, 0); /* client_inc, always 0 */ 2148fac02ddfSArnd Bergmann ceph_encode_timespec64(p, &req->r_mtime); 2149bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 2150aa26d662SJeff Layton 21512e59ffd1SIlya Dryomov encode_oloc(&p, end, &req->r_t.target_oloc); 21522e59ffd1SIlya Dryomov ceph_encode_string(&p, end, req->r_t.target_oid.name, 21532e59ffd1SIlya Dryomov req->r_t.target_oid.name_len); 2154bb873b53SIlya Dryomov 2155bb873b53SIlya Dryomov /* ops, can imply data */ 2156bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 2157bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 2158bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 2159bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 2160bb873b53SIlya Dryomov } 2161bb873b53SIlya Dryomov 2162bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 2163bb873b53SIlya Dryomov if (req->r_snapc) { 2164bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 2165bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 2166bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 2167bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 2168bb873b53SIlya Dryomov } else { 2169bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 2170bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 2171bb873b53SIlya Dryomov } 2172bb873b53SIlya Dryomov 2173bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 2174986e8989SIlya Dryomov BUG_ON(p > end - 8); /* space for features */ 2175bb873b53SIlya Dryomov 21768cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(8); /* MOSDOp v8 */ 21778cb441c0SIlya Dryomov /* front_len is finalized in encode_request_finish() */ 2178986e8989SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 2179986e8989SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 2180bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 2181bb873b53SIlya Dryomov /* 2182bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 2183bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 2184bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 2185bb873b53SIlya Dryomov */ 2186bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 2187bb873b53SIlya Dryomov 21888cb441c0SIlya Dryomov dout("%s req %p msg %p oid %s oid_len %d\n", __func__, req, msg, 21898cb441c0SIlya Dryomov req->r_t.target_oid.name, req->r_t.target_oid.name_len); 21908cb441c0SIlya Dryomov } 21918cb441c0SIlya Dryomov 21928cb441c0SIlya Dryomov static void encode_request_finish(struct ceph_msg *msg) 21938cb441c0SIlya Dryomov { 21948cb441c0SIlya Dryomov void *p = msg->front.iov_base; 2195986e8989SIlya Dryomov void *const partial_end = p + msg->front.iov_len; 21968cb441c0SIlya Dryomov void *const end = p + msg->front_alloc_len; 21978cb441c0SIlya Dryomov 21988cb441c0SIlya Dryomov if (CEPH_HAVE_FEATURE(msg->con->peer_features, RESEND_ON_SPLIT)) { 21998cb441c0SIlya Dryomov /* luminous OSD -- encode features and be done */ 2200986e8989SIlya Dryomov p = partial_end; 22018cb441c0SIlya Dryomov ceph_encode_64(&p, msg->con->peer_features); 22028cb441c0SIlya Dryomov } else { 22038cb441c0SIlya Dryomov struct { 22048cb441c0SIlya Dryomov char spgid[CEPH_ENCODING_START_BLK_LEN + 22058cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1]; 22068cb441c0SIlya Dryomov __le32 hash; 22078cb441c0SIlya Dryomov __le32 epoch; 22088cb441c0SIlya Dryomov __le32 flags; 22098cb441c0SIlya Dryomov char reqid[CEPH_ENCODING_START_BLK_LEN + 22108cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid)]; 22118cb441c0SIlya Dryomov char trace[sizeof(struct ceph_blkin_trace_info)]; 22128cb441c0SIlya Dryomov __le32 client_inc; 22138cb441c0SIlya Dryomov struct ceph_timespec mtime; 22148cb441c0SIlya Dryomov } __packed head; 22158cb441c0SIlya Dryomov struct ceph_pg pgid; 22168cb441c0SIlya Dryomov void *oloc, *oid, *tail; 22178cb441c0SIlya Dryomov int oloc_len, oid_len, tail_len; 22188cb441c0SIlya Dryomov int len; 22198cb441c0SIlya Dryomov 22208cb441c0SIlya Dryomov /* 22218cb441c0SIlya Dryomov * Pre-luminous OSD -- reencode v8 into v4 using @head 22228cb441c0SIlya Dryomov * as a temporary buffer. Encode the raw PG; the rest 22238cb441c0SIlya Dryomov * is just a matter of moving oloc, oid and tail blobs 22248cb441c0SIlya Dryomov * around. 22258cb441c0SIlya Dryomov */ 22268cb441c0SIlya Dryomov memcpy(&head, p, sizeof(head)); 22278cb441c0SIlya Dryomov p += sizeof(head); 22288cb441c0SIlya Dryomov 22298cb441c0SIlya Dryomov oloc = p; 22308cb441c0SIlya Dryomov p += CEPH_ENCODING_START_BLK_LEN; 22318cb441c0SIlya Dryomov pgid.pool = ceph_decode_64(&p); 22328cb441c0SIlya Dryomov p += 4 + 4; /* preferred, key len */ 22338cb441c0SIlya Dryomov len = ceph_decode_32(&p); 22348cb441c0SIlya Dryomov p += len; /* nspace */ 22358cb441c0SIlya Dryomov oloc_len = p - oloc; 22368cb441c0SIlya Dryomov 22378cb441c0SIlya Dryomov oid = p; 22388cb441c0SIlya Dryomov len = ceph_decode_32(&p); 22398cb441c0SIlya Dryomov p += len; 22408cb441c0SIlya Dryomov oid_len = p - oid; 22418cb441c0SIlya Dryomov 22428cb441c0SIlya Dryomov tail = p; 2243986e8989SIlya Dryomov tail_len = partial_end - p; 22448cb441c0SIlya Dryomov 22458cb441c0SIlya Dryomov p = msg->front.iov_base; 22468cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.client_inc, sizeof(head.client_inc)); 22478cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.epoch, sizeof(head.epoch)); 22488cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.flags, sizeof(head.flags)); 22498cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.mtime, sizeof(head.mtime)); 22508cb441c0SIlya Dryomov 22518cb441c0SIlya Dryomov /* reassert_version */ 22528cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_eversion)); 22538cb441c0SIlya Dryomov p += sizeof(struct ceph_eversion); 22548cb441c0SIlya Dryomov 22558cb441c0SIlya Dryomov BUG_ON(p >= oloc); 22568cb441c0SIlya Dryomov memmove(p, oloc, oloc_len); 22578cb441c0SIlya Dryomov p += oloc_len; 22588cb441c0SIlya Dryomov 22598cb441c0SIlya Dryomov pgid.seed = le32_to_cpu(head.hash); 22608cb441c0SIlya Dryomov encode_pgid(&p, &pgid); /* raw pg */ 22618cb441c0SIlya Dryomov 22628cb441c0SIlya Dryomov BUG_ON(p >= oid); 22638cb441c0SIlya Dryomov memmove(p, oid, oid_len); 22648cb441c0SIlya Dryomov p += oid_len; 22658cb441c0SIlya Dryomov 22668cb441c0SIlya Dryomov /* tail -- ops, snapid, snapc, retry_attempt */ 22678cb441c0SIlya Dryomov BUG_ON(p >= tail); 22688cb441c0SIlya Dryomov memmove(p, tail, tail_len); 22698cb441c0SIlya Dryomov p += tail_len; 22708cb441c0SIlya Dryomov 22718cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 22728cb441c0SIlya Dryomov } 22738cb441c0SIlya Dryomov 22748cb441c0SIlya Dryomov BUG_ON(p > end); 22758cb441c0SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 22768cb441c0SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 22778cb441c0SIlya Dryomov 22788cb441c0SIlya Dryomov dout("%s msg %p tid %llu %u+%u+%u v%d\n", __func__, msg, 22798cb441c0SIlya Dryomov le64_to_cpu(msg->hdr.tid), le32_to_cpu(msg->hdr.front_len), 22808cb441c0SIlya Dryomov le32_to_cpu(msg->hdr.middle_len), le32_to_cpu(msg->hdr.data_len), 22818cb441c0SIlya Dryomov le16_to_cpu(msg->hdr.version)); 2282bb873b53SIlya Dryomov } 2283bb873b53SIlya Dryomov 2284bb873b53SIlya Dryomov /* 2285bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 2286bb873b53SIlya Dryomov */ 2287bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 2288bb873b53SIlya Dryomov { 2289bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 2290bb873b53SIlya Dryomov 22915aea3dcdSIlya Dryomov verify_osd_locked(osd); 2292bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 2293bb873b53SIlya Dryomov 2294a02a946dSIlya Dryomov /* backoff? */ 2295a02a946dSIlya Dryomov if (should_plug_request(req)) 2296a02a946dSIlya Dryomov return; 2297a02a946dSIlya Dryomov 22985aea3dcdSIlya Dryomov /* 22995aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 23005aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 23015aea3dcdSIlya Dryomov */ 23025aea3dcdSIlya Dryomov if (req->r_sent) 23035aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 23045aea3dcdSIlya Dryomov 2305bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 2306bb873b53SIlya Dryomov if (req->r_attempts) 2307bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 2308bb873b53SIlya Dryomov else 2309bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 2310bb873b53SIlya Dryomov 23118cb441c0SIlya Dryomov encode_request_partial(req, req->r_request); 2312bb873b53SIlya Dryomov 231304c7d789SIlya 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", 2314bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 2315dc98ff72SIlya Dryomov req->r_t.spgid.pgid.pool, req->r_t.spgid.pgid.seed, 231604c7d789SIlya Dryomov req->r_t.spgid.shard, osd->o_osd, req->r_t.epoch, req->r_flags, 231704c7d789SIlya Dryomov req->r_attempts); 2318bb873b53SIlya Dryomov 2319bb873b53SIlya Dryomov req->r_t.paused = false; 23203d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 2321bb873b53SIlya Dryomov req->r_attempts++; 23223d14c5d2SYehuda Sadeh 2323bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 2324bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 2325bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 23263d14c5d2SYehuda Sadeh } 23273d14c5d2SYehuda Sadeh 232842c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 232942c1b124SIlya Dryomov { 233042c1b124SIlya Dryomov bool continuous = false; 233142c1b124SIlya Dryomov 23325aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 233342c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 233442c1b124SIlya Dryomov 2335b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2336b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || 2337b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 233842c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 233942c1b124SIlya Dryomov continuous = true; 234042c1b124SIlya Dryomov } else { 234142c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 234242c1b124SIlya Dryomov } 234342c1b124SIlya Dryomov 234442c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 234542c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 234642c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 234742c1b124SIlya Dryomov } 234842c1b124SIlya Dryomov 2349a1f4020aSJeff Layton static void complete_request(struct ceph_osd_request *req, int err); 23504609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req); 23514609245eSIlya Dryomov 23525aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 23530bbfdfe8SIlya Dryomov { 23545aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 23555aea3dcdSIlya Dryomov struct ceph_osd *osd; 23564609245eSIlya Dryomov enum calc_target_result ct_res; 235766850df5SIlya Dryomov int err = 0; 23585aea3dcdSIlya Dryomov bool need_send = false; 23595aea3dcdSIlya Dryomov bool promoted = false; 23600bbfdfe8SIlya Dryomov 2361b18b9550SIlya Dryomov WARN_ON(req->r_tid); 23625aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 23635aea3dcdSIlya Dryomov 23645aea3dcdSIlya Dryomov again: 23658edf84baSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, false); 23664609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) 23674609245eSIlya Dryomov goto promote; 23684609245eSIlya Dryomov 23695aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 23705aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 23715aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 23725aea3dcdSIlya Dryomov goto promote; 23735aea3dcdSIlya Dryomov } 23745aea3dcdSIlya Dryomov 237566850df5SIlya Dryomov if (osdc->abort_err) { 237666850df5SIlya Dryomov dout("req %p abort_err %d\n", req, osdc->abort_err); 237766850df5SIlya Dryomov err = osdc->abort_err; 237866850df5SIlya Dryomov } else if (osdc->osdmap->epoch < osdc->epoch_barrier) { 237958eb7932SJeff Layton dout("req %p epoch %u barrier %u\n", req, osdc->osdmap->epoch, 238058eb7932SJeff Layton osdc->epoch_barrier); 238158eb7932SJeff Layton req->r_t.paused = true; 238258eb7932SJeff Layton maybe_request_map(osdc); 238358eb7932SJeff Layton } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 2384b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 23855aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 23865aea3dcdSIlya Dryomov req->r_t.paused = true; 23875aea3dcdSIlya Dryomov maybe_request_map(osdc); 23885aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 2389b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 23905aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 23915aea3dcdSIlya Dryomov req->r_t.paused = true; 23925aea3dcdSIlya Dryomov maybe_request_map(osdc); 23935aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 23945aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 23955aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 2396b7ec35b3SIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 23975aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 23985aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 239902b2f549SDongsheng Yang if (ceph_test_opt(osdc->client, ABORT_ON_FULL)) { 240029e87820SIlya Dryomov err = -ENOSPC; 240129e87820SIlya Dryomov } else { 2402dc9b0dc4SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL)) 2403dc9b0dc4SIlya Dryomov pr_warn_ratelimited("cluster is full (osdmap FULL)\n"); 2404dc9b0dc4SIlya Dryomov else 2405dc9b0dc4SIlya Dryomov pr_warn_ratelimited("pool %lld is full or reached quota\n", 2406dc9b0dc4SIlya Dryomov req->r_t.base_oloc.pool); 24075aea3dcdSIlya Dryomov req->r_t.paused = true; 24085aea3dcdSIlya Dryomov maybe_request_map(osdc); 240929e87820SIlya Dryomov } 24105aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 24115aea3dcdSIlya Dryomov need_send = true; 24120bbfdfe8SIlya Dryomov } else { 24135aea3dcdSIlya Dryomov maybe_request_map(osdc); 24140bbfdfe8SIlya Dryomov } 24150bbfdfe8SIlya Dryomov 24165aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 24175aea3dcdSIlya Dryomov /* 24185aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 24195aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 24205aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 24215aea3dcdSIlya Dryomov */ 24225aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 24235aea3dcdSIlya Dryomov link_request(osd, req); 24245aea3dcdSIlya Dryomov if (need_send) 24255aea3dcdSIlya Dryomov send_request(req); 242666850df5SIlya Dryomov else if (err) 242766850df5SIlya Dryomov complete_request(req, err); 24285aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 24295aea3dcdSIlya Dryomov 24306001567cSIlya Dryomov if (!err && ct_res == CALC_TARGET_POOL_DNE) 24314609245eSIlya Dryomov send_map_check(req); 24324609245eSIlya Dryomov 24335aea3dcdSIlya Dryomov if (promoted) 24345aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 24355aea3dcdSIlya Dryomov return; 24365aea3dcdSIlya Dryomov 24375aea3dcdSIlya Dryomov promote: 24385aea3dcdSIlya Dryomov up_read(&osdc->lock); 24395aea3dcdSIlya Dryomov down_write(&osdc->lock); 24405aea3dcdSIlya Dryomov wrlocked = true; 24415aea3dcdSIlya Dryomov promoted = true; 24425aea3dcdSIlya Dryomov goto again; 24430bbfdfe8SIlya Dryomov } 24440bbfdfe8SIlya Dryomov 24455aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 24465aea3dcdSIlya Dryomov { 244754ea0046SIlya Dryomov WARN_ON(req->r_flags & (CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK)); 2448b18b9550SIlya Dryomov WARN_ON(!(req->r_flags & (CEPH_OSD_FLAG_READ | CEPH_OSD_FLAG_WRITE))); 24495aea3dcdSIlya Dryomov 2450b18b9550SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ONDISK; 245122d2cfdfSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 24527cc5e38fSIlya Dryomov 24537cc5e38fSIlya Dryomov req->r_start_stamp = jiffies; 245497e27aaaSXiubo Li req->r_start_latency = ktime_get(); 24555aea3dcdSIlya Dryomov } 24565aea3dcdSIlya Dryomov 24575aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 24585aea3dcdSIlya Dryomov { 24595aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 24605aea3dcdSIlya Dryomov account_request(req); 24615aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 24625aea3dcdSIlya Dryomov } 24635aea3dcdSIlya Dryomov 246445ee2c1dSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 24655aea3dcdSIlya Dryomov { 24665aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 24675aea3dcdSIlya Dryomov 24684609245eSIlya Dryomov WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); 246904c7d789SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 247004c7d789SIlya Dryomov 247197e27aaaSXiubo Li req->r_end_latency = ktime_get(); 247297e27aaaSXiubo Li 2473*f628d799SJeff Layton if (req->r_osd) { 2474*f628d799SJeff Layton ceph_init_sparse_read(&req->r_osd->o_sparse_read); 247504c7d789SIlya Dryomov unlink_request(req->r_osd, req); 2476*f628d799SJeff Layton } 24775aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 24785aea3dcdSIlya Dryomov 24795aea3dcdSIlya Dryomov /* 24805aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 24815aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 24825aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 24835aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 24845aea3dcdSIlya Dryomov */ 24855aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 24865aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 24875aea3dcdSIlya Dryomov } 24885aea3dcdSIlya Dryomov 2489fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 2490fe5da05eSIlya Dryomov { 2491d75f773cSSakari Ailus dout("%s req %p tid %llu cb %ps result %d\n", __func__, req, 2492b18b9550SIlya Dryomov req->r_tid, req->r_callback, req->r_result); 249326df726bSIlya Dryomov 249426df726bSIlya Dryomov if (req->r_callback) 2495fe5da05eSIlya Dryomov req->r_callback(req); 249626df726bSIlya Dryomov complete_all(&req->r_completion); 249726df726bSIlya Dryomov ceph_osdc_put_request(req); 2498b18b9550SIlya Dryomov } 2499fe5da05eSIlya Dryomov 250088bc1922SIlya Dryomov static void complete_request_workfn(struct work_struct *work) 250188bc1922SIlya Dryomov { 250288bc1922SIlya Dryomov struct ceph_osd_request *req = 250388bc1922SIlya Dryomov container_of(work, struct ceph_osd_request, r_complete_work); 250488bc1922SIlya Dryomov 250588bc1922SIlya Dryomov __complete_request(req); 25060bbfdfe8SIlya Dryomov } 25070bbfdfe8SIlya Dryomov 25084609245eSIlya Dryomov /* 2509b18b9550SIlya Dryomov * This is open-coded in handle_reply(). 25104609245eSIlya Dryomov */ 25114609245eSIlya Dryomov static void complete_request(struct ceph_osd_request *req, int err) 25124609245eSIlya Dryomov { 25134609245eSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 25144609245eSIlya Dryomov 25154609245eSIlya Dryomov req->r_result = err; 251645ee2c1dSIlya Dryomov finish_request(req); 251788bc1922SIlya Dryomov 251888bc1922SIlya Dryomov INIT_WORK(&req->r_complete_work, complete_request_workfn); 251988bc1922SIlya Dryomov queue_work(req->r_osdc->completion_wq, &req->r_complete_work); 25204609245eSIlya Dryomov } 25214609245eSIlya Dryomov 25224609245eSIlya Dryomov static void cancel_map_check(struct ceph_osd_request *req) 25234609245eSIlya Dryomov { 25244609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 25254609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 25264609245eSIlya Dryomov 25274609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 25284609245eSIlya Dryomov 25294609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 25304609245eSIlya Dryomov if (!lookup_req) 25314609245eSIlya Dryomov return; 25324609245eSIlya Dryomov 25334609245eSIlya Dryomov WARN_ON(lookup_req != req); 25344609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 25354609245eSIlya Dryomov ceph_osdc_put_request(req); 25364609245eSIlya Dryomov } 25374609245eSIlya Dryomov 25385aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 25395aea3dcdSIlya Dryomov { 25405aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 25415aea3dcdSIlya Dryomov 25424609245eSIlya Dryomov cancel_map_check(req); 254345ee2c1dSIlya Dryomov finish_request(req); 2544b18b9550SIlya Dryomov complete_all(&req->r_completion); 2545c297eb42SIlya Dryomov ceph_osdc_put_request(req); 25465aea3dcdSIlya Dryomov } 25475aea3dcdSIlya Dryomov 25487cc5e38fSIlya Dryomov static void abort_request(struct ceph_osd_request *req, int err) 25497cc5e38fSIlya Dryomov { 25507cc5e38fSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 25517cc5e38fSIlya Dryomov 25527cc5e38fSIlya Dryomov cancel_map_check(req); 25537cc5e38fSIlya Dryomov complete_request(req, err); 25547cc5e38fSIlya Dryomov } 25557cc5e38fSIlya Dryomov 255666850df5SIlya Dryomov static int abort_fn(struct ceph_osd_request *req, void *arg) 255766850df5SIlya Dryomov { 255866850df5SIlya Dryomov int err = *(int *)arg; 255966850df5SIlya Dryomov 256066850df5SIlya Dryomov abort_request(req, err); 256166850df5SIlya Dryomov return 0; /* continue iteration */ 256266850df5SIlya Dryomov } 256366850df5SIlya Dryomov 256466850df5SIlya Dryomov /* 256566850df5SIlya Dryomov * Abort all in-flight requests with @err and arrange for all future 256666850df5SIlya Dryomov * requests to be failed immediately. 256766850df5SIlya Dryomov */ 256866850df5SIlya Dryomov void ceph_osdc_abort_requests(struct ceph_osd_client *osdc, int err) 256966850df5SIlya Dryomov { 257066850df5SIlya Dryomov dout("%s osdc %p err %d\n", __func__, osdc, err); 257166850df5SIlya Dryomov down_write(&osdc->lock); 257266850df5SIlya Dryomov for_each_request(osdc, abort_fn, &err); 257366850df5SIlya Dryomov osdc->abort_err = err; 257466850df5SIlya Dryomov up_write(&osdc->lock); 257566850df5SIlya Dryomov } 257666850df5SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_abort_requests); 257766850df5SIlya Dryomov 25782cef0ba8SYan, Zheng void ceph_osdc_clear_abort_err(struct ceph_osd_client *osdc) 25792cef0ba8SYan, Zheng { 25802cef0ba8SYan, Zheng down_write(&osdc->lock); 25812cef0ba8SYan, Zheng osdc->abort_err = 0; 25822cef0ba8SYan, Zheng up_write(&osdc->lock); 25832cef0ba8SYan, Zheng } 25842cef0ba8SYan, Zheng EXPORT_SYMBOL(ceph_osdc_clear_abort_err); 25852cef0ba8SYan, Zheng 258658eb7932SJeff Layton static void update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 258758eb7932SJeff Layton { 258858eb7932SJeff Layton if (likely(eb > osdc->epoch_barrier)) { 258958eb7932SJeff Layton dout("updating epoch_barrier from %u to %u\n", 259058eb7932SJeff Layton osdc->epoch_barrier, eb); 259158eb7932SJeff Layton osdc->epoch_barrier = eb; 259258eb7932SJeff Layton /* Request map if we're not to the barrier yet */ 259358eb7932SJeff Layton if (eb > osdc->osdmap->epoch) 259458eb7932SJeff Layton maybe_request_map(osdc); 259558eb7932SJeff Layton } 259658eb7932SJeff Layton } 259758eb7932SJeff Layton 259858eb7932SJeff Layton void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 259958eb7932SJeff Layton { 260058eb7932SJeff Layton down_read(&osdc->lock); 260158eb7932SJeff Layton if (unlikely(eb > osdc->epoch_barrier)) { 260258eb7932SJeff Layton up_read(&osdc->lock); 260358eb7932SJeff Layton down_write(&osdc->lock); 260458eb7932SJeff Layton update_epoch_barrier(osdc, eb); 260558eb7932SJeff Layton up_write(&osdc->lock); 260658eb7932SJeff Layton } else { 260758eb7932SJeff Layton up_read(&osdc->lock); 260858eb7932SJeff Layton } 260958eb7932SJeff Layton } 261058eb7932SJeff Layton EXPORT_SYMBOL(ceph_osdc_update_epoch_barrier); 261158eb7932SJeff Layton 2612fc36d0a4SJeff Layton /* 26134eea0fefSIlya Dryomov * We can end up releasing caps as a result of abort_request(). 26144eea0fefSIlya Dryomov * In that case, we probably want to ensure that the cap release message 26154eea0fefSIlya Dryomov * has an updated epoch barrier in it, so set the epoch barrier prior to 26164eea0fefSIlya Dryomov * aborting the first request. 26174eea0fefSIlya Dryomov */ 26184eea0fefSIlya Dryomov static int abort_on_full_fn(struct ceph_osd_request *req, void *arg) 26194eea0fefSIlya Dryomov { 26204eea0fefSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 26214eea0fefSIlya Dryomov bool *victims = arg; 26224eea0fefSIlya Dryomov 2623c843d13cSIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 26244eea0fefSIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2625690f951dSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 26264eea0fefSIlya Dryomov if (!*victims) { 26274eea0fefSIlya Dryomov update_epoch_barrier(osdc, osdc->osdmap->epoch); 26284eea0fefSIlya Dryomov *victims = true; 26294eea0fefSIlya Dryomov } 26304eea0fefSIlya Dryomov abort_request(req, -ENOSPC); 26314eea0fefSIlya Dryomov } 26324eea0fefSIlya Dryomov 26334eea0fefSIlya Dryomov return 0; /* continue iteration */ 26344eea0fefSIlya Dryomov } 26354eea0fefSIlya Dryomov 26364eea0fefSIlya Dryomov /* 2637fc36d0a4SJeff Layton * Drop all pending requests that are stalled waiting on a full condition to 263858eb7932SJeff Layton * clear, and complete them with ENOSPC as the return code. Set the 263958eb7932SJeff Layton * osdc->epoch_barrier to the latest map epoch that we've seen if any were 264058eb7932SJeff Layton * cancelled. 2641fc36d0a4SJeff Layton */ 2642fc36d0a4SJeff Layton static void ceph_osdc_abort_on_full(struct ceph_osd_client *osdc) 2643fc36d0a4SJeff Layton { 264458eb7932SJeff Layton bool victims = false; 2645fc36d0a4SJeff Layton 264602b2f549SDongsheng Yang if (ceph_test_opt(osdc->client, ABORT_ON_FULL) && 2647c843d13cSIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || have_pool_full(osdc))) 26484eea0fefSIlya Dryomov for_each_request(osdc, abort_on_full_fn, &victims); 2649fc36d0a4SJeff Layton } 2650fc36d0a4SJeff Layton 26514609245eSIlya Dryomov static void check_pool_dne(struct ceph_osd_request *req) 26524609245eSIlya Dryomov { 26534609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 26544609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 26554609245eSIlya Dryomov 26564609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 26574609245eSIlya Dryomov WARN_ON(!map->epoch); 26584609245eSIlya Dryomov 26594609245eSIlya Dryomov if (req->r_attempts) { 26604609245eSIlya Dryomov /* 26614609245eSIlya Dryomov * We sent a request earlier, which means that 26624609245eSIlya Dryomov * previously the pool existed, and now it does not 26634609245eSIlya Dryomov * (i.e., it was deleted). 26644609245eSIlya Dryomov */ 26654609245eSIlya Dryomov req->r_map_dne_bound = map->epoch; 26664609245eSIlya Dryomov dout("%s req %p tid %llu pool disappeared\n", __func__, req, 26674609245eSIlya Dryomov req->r_tid); 26684609245eSIlya Dryomov } else { 26694609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, 26704609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, map->epoch); 26714609245eSIlya Dryomov } 26724609245eSIlya Dryomov 26734609245eSIlya Dryomov if (req->r_map_dne_bound) { 26744609245eSIlya Dryomov if (map->epoch >= req->r_map_dne_bound) { 26754609245eSIlya Dryomov /* we had a new enough map */ 26764609245eSIlya Dryomov pr_info_ratelimited("tid %llu pool does not exist\n", 26774609245eSIlya Dryomov req->r_tid); 26784609245eSIlya Dryomov complete_request(req, -ENOENT); 26794609245eSIlya Dryomov } 26804609245eSIlya Dryomov } else { 26814609245eSIlya Dryomov send_map_check(req); 26824609245eSIlya Dryomov } 26834609245eSIlya Dryomov } 26844609245eSIlya Dryomov 26854609245eSIlya Dryomov static void map_check_cb(struct ceph_mon_generic_request *greq) 26864609245eSIlya Dryomov { 26874609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 26884609245eSIlya Dryomov struct ceph_osd_request *req; 26894609245eSIlya Dryomov u64 tid = greq->private_data; 26904609245eSIlya Dryomov 26914609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 26924609245eSIlya Dryomov 26934609245eSIlya Dryomov down_write(&osdc->lock); 26944609245eSIlya Dryomov req = lookup_request_mc(&osdc->map_checks, tid); 26954609245eSIlya Dryomov if (!req) { 26964609245eSIlya Dryomov dout("%s tid %llu dne\n", __func__, tid); 26974609245eSIlya Dryomov goto out_unlock; 26984609245eSIlya Dryomov } 26994609245eSIlya Dryomov 27004609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, 27014609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, greq->u.newest); 27024609245eSIlya Dryomov if (!req->r_map_dne_bound) 27034609245eSIlya Dryomov req->r_map_dne_bound = greq->u.newest; 27044609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 27054609245eSIlya Dryomov check_pool_dne(req); 27064609245eSIlya Dryomov 27074609245eSIlya Dryomov ceph_osdc_put_request(req); 27084609245eSIlya Dryomov out_unlock: 27094609245eSIlya Dryomov up_write(&osdc->lock); 27104609245eSIlya Dryomov } 27114609245eSIlya Dryomov 27124609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req) 27134609245eSIlya Dryomov { 27144609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 27154609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 27164609245eSIlya Dryomov int ret; 27174609245eSIlya Dryomov 27184609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 27194609245eSIlya Dryomov 27204609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 27214609245eSIlya Dryomov if (lookup_req) { 27224609245eSIlya Dryomov WARN_ON(lookup_req != req); 27234609245eSIlya Dryomov return; 27244609245eSIlya Dryomov } 27254609245eSIlya Dryomov 27264609245eSIlya Dryomov ceph_osdc_get_request(req); 27274609245eSIlya Dryomov insert_request_mc(&osdc->map_checks, req); 27284609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 27294609245eSIlya Dryomov map_check_cb, req->r_tid); 27304609245eSIlya Dryomov WARN_ON(ret); 27314609245eSIlya Dryomov } 27324609245eSIlya Dryomov 27330bbfdfe8SIlya Dryomov /* 2734922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 2735922dab61SIlya Dryomov */ 2736922dab61SIlya Dryomov static void linger_release(struct kref *kref) 2737922dab61SIlya Dryomov { 2738922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2739922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 2740922dab61SIlya Dryomov 2741922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 2742922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 2743922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 2744922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 27454609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); 2746922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 2747b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lreq->pending_lworks)); 2748922dab61SIlya Dryomov WARN_ON(lreq->osd); 2749922dab61SIlya Dryomov 275075dbb685SIlya Dryomov if (lreq->request_pl) 275175dbb685SIlya Dryomov ceph_pagelist_release(lreq->request_pl); 275275dbb685SIlya Dryomov if (lreq->notify_id_pages) 275375dbb685SIlya Dryomov ceph_release_page_vector(lreq->notify_id_pages, 1); 275475dbb685SIlya Dryomov 2755922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 2756922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 2757922dab61SIlya Dryomov target_destroy(&lreq->t); 2758922dab61SIlya Dryomov kfree(lreq); 2759922dab61SIlya Dryomov } 2760922dab61SIlya Dryomov 2761922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 2762922dab61SIlya Dryomov { 2763922dab61SIlya Dryomov if (lreq) 2764922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 2765922dab61SIlya Dryomov } 2766922dab61SIlya Dryomov 2767922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2768922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 2769922dab61SIlya Dryomov { 2770922dab61SIlya Dryomov kref_get(&lreq->kref); 2771922dab61SIlya Dryomov return lreq; 2772922dab61SIlya Dryomov } 2773922dab61SIlya Dryomov 2774922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2775922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 2776922dab61SIlya Dryomov { 2777922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2778922dab61SIlya Dryomov 2779922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 2780922dab61SIlya Dryomov if (!lreq) 2781922dab61SIlya Dryomov return NULL; 2782922dab61SIlya Dryomov 2783922dab61SIlya Dryomov kref_init(&lreq->kref); 2784922dab61SIlya Dryomov mutex_init(&lreq->lock); 2785922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 2786922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 27874609245eSIlya Dryomov RB_CLEAR_NODE(&lreq->mc_node); 2788922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 2789b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lreq->pending_lworks); 2790922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 279119079203SIlya Dryomov init_completion(&lreq->notify_finish_wait); 2792922dab61SIlya Dryomov 2793922dab61SIlya Dryomov lreq->osdc = osdc; 2794922dab61SIlya Dryomov target_init(&lreq->t); 2795922dab61SIlya Dryomov 2796922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 2797922dab61SIlya Dryomov return lreq; 2798922dab61SIlya Dryomov } 2799922dab61SIlya Dryomov 2800922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 2801922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 28024609245eSIlya Dryomov DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) 2803922dab61SIlya Dryomov 2804922dab61SIlya Dryomov /* 2805922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 2806922dab61SIlya Dryomov * 2807922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 2808922dab61SIlya Dryomov */ 2809922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 2810922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2811922dab61SIlya Dryomov { 2812922dab61SIlya Dryomov verify_osd_locked(osd); 2813922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 2814922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2815922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2816922dab61SIlya Dryomov 2817922dab61SIlya Dryomov if (!osd_homeless(osd)) 2818922dab61SIlya Dryomov __remove_osd_from_lru(osd); 2819922dab61SIlya Dryomov else 2820922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 2821922dab61SIlya Dryomov 2822922dab61SIlya Dryomov get_osd(osd); 2823922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 2824922dab61SIlya Dryomov lreq->osd = osd; 2825922dab61SIlya Dryomov } 2826922dab61SIlya Dryomov 2827922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 2828922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2829922dab61SIlya Dryomov { 2830922dab61SIlya Dryomov verify_osd_locked(osd); 2831922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 2832922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2833922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2834922dab61SIlya Dryomov 2835922dab61SIlya Dryomov lreq->osd = NULL; 2836922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 2837922dab61SIlya Dryomov put_osd(osd); 2838922dab61SIlya Dryomov 2839922dab61SIlya Dryomov if (!osd_homeless(osd)) 2840922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 2841922dab61SIlya Dryomov else 2842922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 2843922dab61SIlya Dryomov } 2844922dab61SIlya Dryomov 2845922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 2846922dab61SIlya Dryomov { 2847922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 2848922dab61SIlya Dryomov 2849922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 2850922dab61SIlya Dryomov } 2851922dab61SIlya Dryomov 2852922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 2853922dab61SIlya Dryomov { 2854922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2855922dab61SIlya Dryomov bool registered; 2856922dab61SIlya Dryomov 2857922dab61SIlya Dryomov down_read(&osdc->lock); 2858922dab61SIlya Dryomov registered = __linger_registered(lreq); 2859922dab61SIlya Dryomov up_read(&osdc->lock); 2860922dab61SIlya Dryomov 2861922dab61SIlya Dryomov return registered; 2862922dab61SIlya Dryomov } 2863922dab61SIlya Dryomov 2864922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 2865922dab61SIlya Dryomov { 2866922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2867922dab61SIlya Dryomov 2868922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2869922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 2870922dab61SIlya Dryomov 2871922dab61SIlya Dryomov linger_get(lreq); 2872922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 2873922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 2874922dab61SIlya Dryomov } 2875922dab61SIlya Dryomov 2876922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 2877922dab61SIlya Dryomov { 2878922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2879922dab61SIlya Dryomov 2880922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2881922dab61SIlya Dryomov 2882922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 2883922dab61SIlya Dryomov linger_put(lreq); 2884922dab61SIlya Dryomov } 2885922dab61SIlya Dryomov 2886922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 2887922dab61SIlya Dryomov { 2888922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2889922dab61SIlya Dryomov 2890922dab61SIlya Dryomov WARN_ON(!req->r_linger); 2891922dab61SIlya Dryomov cancel_request(req); 2892922dab61SIlya Dryomov linger_put(lreq); 2893922dab61SIlya Dryomov } 2894922dab61SIlya Dryomov 2895922dab61SIlya Dryomov struct linger_work { 2896922dab61SIlya Dryomov struct work_struct work; 2897922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2898b07d3c4bSIlya Dryomov struct list_head pending_item; 2899b07d3c4bSIlya Dryomov unsigned long queued_stamp; 2900922dab61SIlya Dryomov 2901922dab61SIlya Dryomov union { 2902922dab61SIlya Dryomov struct { 2903922dab61SIlya Dryomov u64 notify_id; 2904922dab61SIlya Dryomov u64 notifier_id; 2905922dab61SIlya Dryomov void *payload; /* points into @msg front */ 2906922dab61SIlya Dryomov size_t payload_len; 2907922dab61SIlya Dryomov 2908922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 2909922dab61SIlya Dryomov } notify; 2910922dab61SIlya Dryomov struct { 2911922dab61SIlya Dryomov int err; 2912922dab61SIlya Dryomov } error; 2913922dab61SIlya Dryomov }; 2914922dab61SIlya Dryomov }; 2915922dab61SIlya Dryomov 2916922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 2917922dab61SIlya Dryomov work_func_t workfn) 2918922dab61SIlya Dryomov { 2919922dab61SIlya Dryomov struct linger_work *lwork; 2920922dab61SIlya Dryomov 2921922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 2922922dab61SIlya Dryomov if (!lwork) 2923922dab61SIlya Dryomov return NULL; 2924922dab61SIlya Dryomov 2925922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 2926b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lwork->pending_item); 2927922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 2928922dab61SIlya Dryomov 2929922dab61SIlya Dryomov return lwork; 2930922dab61SIlya Dryomov } 2931922dab61SIlya Dryomov 2932922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 2933922dab61SIlya Dryomov { 2934922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2935922dab61SIlya Dryomov 2936b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 2937b07d3c4bSIlya Dryomov list_del(&lwork->pending_item); 2938b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 2939b07d3c4bSIlya Dryomov 2940922dab61SIlya Dryomov linger_put(lreq); 2941922dab61SIlya Dryomov kfree(lwork); 2942922dab61SIlya Dryomov } 2943922dab61SIlya Dryomov 2944922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 2945922dab61SIlya Dryomov { 2946922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2947922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2948922dab61SIlya Dryomov 2949922dab61SIlya Dryomov verify_lreq_locked(lreq); 2950b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lwork->pending_item)); 2951b07d3c4bSIlya Dryomov 2952b07d3c4bSIlya Dryomov lwork->queued_stamp = jiffies; 2953b07d3c4bSIlya Dryomov list_add_tail(&lwork->pending_item, &lreq->pending_lworks); 2954922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 2955922dab61SIlya Dryomov } 2956922dab61SIlya Dryomov 2957922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 2958922dab61SIlya Dryomov { 2959922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2960922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2961922dab61SIlya Dryomov 2962922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2963922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2964922dab61SIlya Dryomov goto out; 2965922dab61SIlya Dryomov } 2966922dab61SIlya Dryomov 296719079203SIlya Dryomov WARN_ON(!lreq->is_watch); 2968922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 2969922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 2970922dab61SIlya Dryomov lwork->notify.payload_len); 2971922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 2972922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 2973922dab61SIlya Dryomov lwork->notify.payload_len); 2974922dab61SIlya Dryomov 2975922dab61SIlya Dryomov out: 2976922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 2977922dab61SIlya Dryomov lwork_free(lwork); 2978922dab61SIlya Dryomov } 2979922dab61SIlya Dryomov 2980922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 2981922dab61SIlya Dryomov { 2982922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2983922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2984922dab61SIlya Dryomov 2985922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2986922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2987922dab61SIlya Dryomov goto out; 2988922dab61SIlya Dryomov } 2989922dab61SIlya Dryomov 2990922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 2991922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 2992922dab61SIlya Dryomov 2993922dab61SIlya Dryomov out: 2994922dab61SIlya Dryomov lwork_free(lwork); 2995922dab61SIlya Dryomov } 2996922dab61SIlya Dryomov 2997922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 2998922dab61SIlya Dryomov { 2999922dab61SIlya Dryomov struct linger_work *lwork; 3000922dab61SIlya Dryomov 3001922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 3002922dab61SIlya Dryomov if (!lwork) { 3003922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 3004922dab61SIlya Dryomov return; 3005922dab61SIlya Dryomov } 3006922dab61SIlya Dryomov 3007922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 3008922dab61SIlya Dryomov lwork_queue(lwork); 3009922dab61SIlya Dryomov } 3010922dab61SIlya Dryomov 3011922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 3012922dab61SIlya Dryomov int result) 3013922dab61SIlya Dryomov { 3014922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 3015922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 3016922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 3017922dab61SIlya Dryomov } 3018922dab61SIlya Dryomov } 3019922dab61SIlya Dryomov 3020922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 3021922dab61SIlya Dryomov { 3022922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 3023922dab61SIlya Dryomov 3024922dab61SIlya Dryomov mutex_lock(&lreq->lock); 302575dbb685SIlya Dryomov if (req != lreq->reg_req) { 302675dbb685SIlya Dryomov dout("%s lreq %p linger_id %llu unknown req (%p != %p)\n", 302775dbb685SIlya Dryomov __func__, lreq, lreq->linger_id, req, lreq->reg_req); 302875dbb685SIlya Dryomov goto out; 302975dbb685SIlya Dryomov } 303075dbb685SIlya Dryomov 3031922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 3032922dab61SIlya Dryomov lreq->linger_id, req->r_result); 3033922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 3034922dab61SIlya Dryomov lreq->committed = true; 3035922dab61SIlya Dryomov 303619079203SIlya Dryomov if (!lreq->is_watch) { 303719079203SIlya Dryomov struct ceph_osd_data *osd_data = 303819079203SIlya Dryomov osd_req_op_data(req, 0, notify, response_data); 303919079203SIlya Dryomov void *p = page_address(osd_data->pages[0]); 304019079203SIlya Dryomov 304119079203SIlya Dryomov WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || 304219079203SIlya Dryomov osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); 304319079203SIlya Dryomov 304419079203SIlya Dryomov /* make note of the notify_id */ 304519079203SIlya Dryomov if (req->r_ops[0].outdata_len >= sizeof(u64)) { 304619079203SIlya Dryomov lreq->notify_id = ceph_decode_64(&p); 304719079203SIlya Dryomov dout("lreq %p notify_id %llu\n", lreq, 304819079203SIlya Dryomov lreq->notify_id); 304919079203SIlya Dryomov } else { 305019079203SIlya Dryomov dout("lreq %p no notify_id\n", lreq); 305119079203SIlya Dryomov } 305219079203SIlya Dryomov } 305319079203SIlya Dryomov 305475dbb685SIlya Dryomov out: 3055922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3056922dab61SIlya Dryomov linger_put(lreq); 3057922dab61SIlya Dryomov } 3058922dab61SIlya Dryomov 3059922dab61SIlya Dryomov static int normalize_watch_error(int err) 3060922dab61SIlya Dryomov { 3061922dab61SIlya Dryomov /* 3062922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 3063922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 3064922dab61SIlya Dryomov * the delete appear the same to the user. 3065922dab61SIlya Dryomov */ 3066922dab61SIlya Dryomov if (err == -ENOENT) 3067922dab61SIlya Dryomov err = -ENOTCONN; 3068922dab61SIlya Dryomov 3069922dab61SIlya Dryomov return err; 3070922dab61SIlya Dryomov } 3071922dab61SIlya Dryomov 3072922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 3073922dab61SIlya Dryomov { 3074922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 3075922dab61SIlya Dryomov 3076922dab61SIlya Dryomov mutex_lock(&lreq->lock); 307775dbb685SIlya Dryomov if (req != lreq->reg_req) { 307875dbb685SIlya Dryomov dout("%s lreq %p linger_id %llu unknown req (%p != %p)\n", 307975dbb685SIlya Dryomov __func__, lreq, lreq->linger_id, req, lreq->reg_req); 308075dbb685SIlya Dryomov goto out; 308175dbb685SIlya Dryomov } 308275dbb685SIlya Dryomov 3083922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 3084922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 3085922dab61SIlya Dryomov if (req->r_result < 0) { 3086922dab61SIlya Dryomov if (!lreq->last_error) { 3087922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 3088922dab61SIlya Dryomov queue_watch_error(lreq); 3089922dab61SIlya Dryomov } 3090922dab61SIlya Dryomov } 3091922dab61SIlya Dryomov 309275dbb685SIlya Dryomov out: 3093922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3094922dab61SIlya Dryomov linger_put(lreq); 3095922dab61SIlya Dryomov } 3096922dab61SIlya Dryomov 3097922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 3098922dab61SIlya Dryomov { 309975dbb685SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 310075dbb685SIlya Dryomov struct ceph_osd_request *req; 310175dbb685SIlya Dryomov int ret; 3102922dab61SIlya Dryomov 310375dbb685SIlya Dryomov verify_osdc_wrlocked(osdc); 310475dbb685SIlya Dryomov mutex_lock(&lreq->lock); 3105922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 3106922dab61SIlya Dryomov 310775dbb685SIlya Dryomov if (lreq->reg_req) { 310875dbb685SIlya Dryomov if (lreq->reg_req->r_osd) 310975dbb685SIlya Dryomov cancel_linger_request(lreq->reg_req); 311075dbb685SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 311175dbb685SIlya Dryomov } 3112922dab61SIlya Dryomov 311375dbb685SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, true, GFP_NOIO); 311475dbb685SIlya Dryomov BUG_ON(!req); 311575dbb685SIlya Dryomov 31165133ba8fSIlya Dryomov target_copy(&req->r_t, &lreq->t); 3117922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 3118922dab61SIlya Dryomov 311919079203SIlya Dryomov if (lreq->is_watch && lreq->committed) { 312075dbb685SIlya Dryomov osd_req_op_watch_init(req, 0, CEPH_OSD_WATCH_OP_RECONNECT, 312175dbb685SIlya Dryomov lreq->linger_id, ++lreq->register_gen); 3122922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 312375dbb685SIlya Dryomov req->r_ops[0].watch.gen); 3124922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 3125922dab61SIlya Dryomov } else { 312675dbb685SIlya Dryomov if (lreq->is_watch) { 312775dbb685SIlya Dryomov osd_req_op_watch_init(req, 0, CEPH_OSD_WATCH_OP_WATCH, 312875dbb685SIlya Dryomov lreq->linger_id, 0); 312975dbb685SIlya Dryomov } else { 313019079203SIlya Dryomov lreq->notify_id = 0; 313175dbb685SIlya Dryomov 313275dbb685SIlya Dryomov refcount_inc(&lreq->request_pl->refcnt); 313375dbb685SIlya Dryomov osd_req_op_notify_init(req, 0, lreq->linger_id, 313475dbb685SIlya Dryomov lreq->request_pl); 313575dbb685SIlya Dryomov ceph_osd_data_pages_init( 313675dbb685SIlya Dryomov osd_req_op_data(req, 0, notify, response_data), 313775dbb685SIlya Dryomov lreq->notify_id_pages, PAGE_SIZE, 0, false, false); 313875dbb685SIlya Dryomov } 3139922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 3140922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 3141922dab61SIlya Dryomov } 314275dbb685SIlya Dryomov 314375dbb685SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 314475dbb685SIlya Dryomov BUG_ON(ret); 3145922dab61SIlya Dryomov 3146922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 3147922dab61SIlya Dryomov req->r_linger = true; 314875dbb685SIlya Dryomov lreq->reg_req = req; 314975dbb685SIlya Dryomov mutex_unlock(&lreq->lock); 3150922dab61SIlya Dryomov 3151922dab61SIlya Dryomov submit_request(req, true); 3152922dab61SIlya Dryomov } 3153922dab61SIlya Dryomov 3154922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 3155922dab61SIlya Dryomov { 3156922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 3157922dab61SIlya Dryomov 3158922dab61SIlya Dryomov mutex_lock(&lreq->lock); 315975dbb685SIlya Dryomov if (req != lreq->ping_req) { 316075dbb685SIlya Dryomov dout("%s lreq %p linger_id %llu unknown req (%p != %p)\n", 316175dbb685SIlya Dryomov __func__, lreq, lreq->linger_id, req, lreq->ping_req); 316275dbb685SIlya Dryomov goto out; 316375dbb685SIlya Dryomov } 316475dbb685SIlya Dryomov 3165922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 3166922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 3167922dab61SIlya Dryomov lreq->last_error); 3168922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 3169b07d3c4bSIlya Dryomov if (!req->r_result) { 3170b07d3c4bSIlya Dryomov lreq->watch_valid_thru = lreq->ping_sent; 3171b07d3c4bSIlya Dryomov } else if (!lreq->last_error) { 3172922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 3173922dab61SIlya Dryomov queue_watch_error(lreq); 3174922dab61SIlya Dryomov } 3175922dab61SIlya Dryomov } else { 3176922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 3177922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 3178922dab61SIlya Dryomov } 3179922dab61SIlya Dryomov 318075dbb685SIlya Dryomov out: 3181922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3182922dab61SIlya Dryomov linger_put(lreq); 3183922dab61SIlya Dryomov } 3184922dab61SIlya Dryomov 3185922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 3186922dab61SIlya Dryomov { 3187922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 318875dbb685SIlya Dryomov struct ceph_osd_request *req; 318975dbb685SIlya Dryomov int ret; 3190922dab61SIlya Dryomov 3191b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 3192922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 3193922dab61SIlya Dryomov return; 3194922dab61SIlya Dryomov } 3195922dab61SIlya Dryomov 3196922dab61SIlya Dryomov lreq->ping_sent = jiffies; 3197922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 3198922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 3199922dab61SIlya Dryomov lreq->register_gen); 3200922dab61SIlya Dryomov 320175dbb685SIlya Dryomov if (lreq->ping_req) { 320275dbb685SIlya Dryomov if (lreq->ping_req->r_osd) 320375dbb685SIlya Dryomov cancel_linger_request(lreq->ping_req); 320475dbb685SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 320575dbb685SIlya Dryomov } 3206922dab61SIlya Dryomov 320775dbb685SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, true, GFP_NOIO); 320875dbb685SIlya Dryomov BUG_ON(!req); 320975dbb685SIlya Dryomov 3210922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 321175dbb685SIlya Dryomov osd_req_op_watch_init(req, 0, CEPH_OSD_WATCH_OP_PING, lreq->linger_id, 321275dbb685SIlya Dryomov lreq->register_gen); 3213922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 321475dbb685SIlya Dryomov 321575dbb685SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 321675dbb685SIlya Dryomov BUG_ON(ret); 321775dbb685SIlya Dryomov 3218922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 3219922dab61SIlya Dryomov req->r_linger = true; 322075dbb685SIlya Dryomov lreq->ping_req = req; 3221922dab61SIlya Dryomov 3222922dab61SIlya Dryomov ceph_osdc_get_request(req); 3223922dab61SIlya Dryomov account_request(req); 3224922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 3225922dab61SIlya Dryomov link_request(lreq->osd, req); 3226922dab61SIlya Dryomov send_request(req); 3227922dab61SIlya Dryomov } 3228922dab61SIlya Dryomov 3229922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 3230922dab61SIlya Dryomov { 3231922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3232922dab61SIlya Dryomov struct ceph_osd *osd; 3233922dab61SIlya Dryomov 323481c65213SIlya Dryomov down_write(&osdc->lock); 323581c65213SIlya Dryomov linger_register(lreq); 323681c65213SIlya Dryomov 32378edf84baSIlya Dryomov calc_target(osdc, &lreq->t, false); 3238922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3239922dab61SIlya Dryomov link_linger(osd, lreq); 3240922dab61SIlya Dryomov 3241922dab61SIlya Dryomov send_linger(lreq); 324281c65213SIlya Dryomov up_write(&osdc->lock); 3243922dab61SIlya Dryomov } 3244922dab61SIlya Dryomov 32454609245eSIlya Dryomov static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) 32464609245eSIlya Dryomov { 32474609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 32484609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 32494609245eSIlya Dryomov 32504609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 32514609245eSIlya Dryomov 32524609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 32534609245eSIlya Dryomov lreq->linger_id); 32544609245eSIlya Dryomov if (!lookup_lreq) 32554609245eSIlya Dryomov return; 32564609245eSIlya Dryomov 32574609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 32584609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 32594609245eSIlya Dryomov linger_put(lreq); 32604609245eSIlya Dryomov } 32614609245eSIlya Dryomov 3262922dab61SIlya Dryomov /* 3263922dab61SIlya Dryomov * @lreq has to be both registered and linked. 3264922dab61SIlya Dryomov */ 3265922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 3266922dab61SIlya Dryomov { 326775dbb685SIlya Dryomov if (lreq->ping_req && lreq->ping_req->r_osd) 3268922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 326975dbb685SIlya Dryomov if (lreq->reg_req && lreq->reg_req->r_osd) 3270922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 32714609245eSIlya Dryomov cancel_linger_map_check(lreq); 3272922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3273922dab61SIlya Dryomov linger_unregister(lreq); 3274922dab61SIlya Dryomov } 3275922dab61SIlya Dryomov 3276922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 3277922dab61SIlya Dryomov { 3278922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3279922dab61SIlya Dryomov 3280922dab61SIlya Dryomov down_write(&osdc->lock); 3281922dab61SIlya Dryomov if (__linger_registered(lreq)) 3282922dab61SIlya Dryomov __linger_cancel(lreq); 3283922dab61SIlya Dryomov up_write(&osdc->lock); 3284922dab61SIlya Dryomov } 3285922dab61SIlya Dryomov 32864609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq); 32874609245eSIlya Dryomov 32884609245eSIlya Dryomov static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) 32894609245eSIlya Dryomov { 32904609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 32914609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 32924609245eSIlya Dryomov 32934609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 32944609245eSIlya Dryomov WARN_ON(!map->epoch); 32954609245eSIlya Dryomov 32964609245eSIlya Dryomov if (lreq->register_gen) { 32974609245eSIlya Dryomov lreq->map_dne_bound = map->epoch; 32984609245eSIlya Dryomov dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, 32994609245eSIlya Dryomov lreq, lreq->linger_id); 33004609245eSIlya Dryomov } else { 33014609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", 33024609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 33034609245eSIlya Dryomov map->epoch); 33044609245eSIlya Dryomov } 33054609245eSIlya Dryomov 33064609245eSIlya Dryomov if (lreq->map_dne_bound) { 33074609245eSIlya Dryomov if (map->epoch >= lreq->map_dne_bound) { 33084609245eSIlya Dryomov /* we had a new enough map */ 33094609245eSIlya Dryomov pr_info("linger_id %llu pool does not exist\n", 33104609245eSIlya Dryomov lreq->linger_id); 33114609245eSIlya Dryomov linger_reg_commit_complete(lreq, -ENOENT); 33124609245eSIlya Dryomov __linger_cancel(lreq); 33134609245eSIlya Dryomov } 33144609245eSIlya Dryomov } else { 33154609245eSIlya Dryomov send_linger_map_check(lreq); 33164609245eSIlya Dryomov } 33174609245eSIlya Dryomov } 33184609245eSIlya Dryomov 33194609245eSIlya Dryomov static void linger_map_check_cb(struct ceph_mon_generic_request *greq) 33204609245eSIlya Dryomov { 33214609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 33224609245eSIlya Dryomov struct ceph_osd_linger_request *lreq; 33234609245eSIlya Dryomov u64 linger_id = greq->private_data; 33244609245eSIlya Dryomov 33254609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 33264609245eSIlya Dryomov 33274609245eSIlya Dryomov down_write(&osdc->lock); 33284609245eSIlya Dryomov lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); 33294609245eSIlya Dryomov if (!lreq) { 33304609245eSIlya Dryomov dout("%s linger_id %llu dne\n", __func__, linger_id); 33314609245eSIlya Dryomov goto out_unlock; 33324609245eSIlya Dryomov } 33334609245eSIlya Dryomov 33344609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", 33354609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 33364609245eSIlya Dryomov greq->u.newest); 33374609245eSIlya Dryomov if (!lreq->map_dne_bound) 33384609245eSIlya Dryomov lreq->map_dne_bound = greq->u.newest; 33394609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 33404609245eSIlya Dryomov check_linger_pool_dne(lreq); 33414609245eSIlya Dryomov 33424609245eSIlya Dryomov linger_put(lreq); 33434609245eSIlya Dryomov out_unlock: 33444609245eSIlya Dryomov up_write(&osdc->lock); 33454609245eSIlya Dryomov } 33464609245eSIlya Dryomov 33474609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq) 33484609245eSIlya Dryomov { 33494609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 33504609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 33514609245eSIlya Dryomov int ret; 33524609245eSIlya Dryomov 33534609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 33544609245eSIlya Dryomov 33554609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 33564609245eSIlya Dryomov lreq->linger_id); 33574609245eSIlya Dryomov if (lookup_lreq) { 33584609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 33594609245eSIlya Dryomov return; 33604609245eSIlya Dryomov } 33614609245eSIlya Dryomov 33624609245eSIlya Dryomov linger_get(lreq); 33634609245eSIlya Dryomov insert_linger_mc(&osdc->linger_map_checks, lreq); 33644609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 33654609245eSIlya Dryomov linger_map_check_cb, lreq->linger_id); 33664609245eSIlya Dryomov WARN_ON(ret); 33674609245eSIlya Dryomov } 33684609245eSIlya Dryomov 3369922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 3370922dab61SIlya Dryomov { 3371922dab61SIlya Dryomov int ret; 3372922dab61SIlya Dryomov 3373922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 3374e6e28432SIlya Dryomov ret = wait_for_completion_killable(&lreq->reg_commit_wait); 3375922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 3376922dab61SIlya Dryomov } 3377922dab61SIlya Dryomov 3378e6e28432SIlya Dryomov static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq, 3379e6e28432SIlya Dryomov unsigned long timeout) 338019079203SIlya Dryomov { 3381e6e28432SIlya Dryomov long left; 338219079203SIlya Dryomov 338319079203SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 3384e6e28432SIlya Dryomov left = wait_for_completion_killable_timeout(&lreq->notify_finish_wait, 3385e6e28432SIlya Dryomov ceph_timeout_jiffies(timeout)); 3386e6e28432SIlya Dryomov if (left <= 0) 3387e6e28432SIlya Dryomov left = left ?: -ETIMEDOUT; 3388e6e28432SIlya Dryomov else 3389e6e28432SIlya Dryomov left = lreq->notify_finish_error; /* completed */ 3390e6e28432SIlya Dryomov 3391e6e28432SIlya Dryomov return left; 339219079203SIlya Dryomov } 339319079203SIlya Dryomov 3394922dab61SIlya Dryomov /* 3395fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 3396fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 3397fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 3398fbca9635SIlya Dryomov * reset is detected. 33993d14c5d2SYehuda Sadeh */ 34003d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 34013d14c5d2SYehuda Sadeh { 34023d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 34033d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 3404a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 34055aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 34067cc5e38fSIlya Dryomov unsigned long expiry_cutoff = jiffies - opts->osd_request_timeout; 34075aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 34085aea3dcdSIlya Dryomov struct rb_node *n, *p; 34093d14c5d2SYehuda Sadeh 34105aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 34115aea3dcdSIlya Dryomov down_write(&osdc->lock); 34123d14c5d2SYehuda Sadeh 34133d14c5d2SYehuda Sadeh /* 34143d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 34153d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 34163d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 34173d14c5d2SYehuda Sadeh */ 34185aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 34195aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 34205aea3dcdSIlya Dryomov bool found = false; 34213d14c5d2SYehuda Sadeh 34227cc5e38fSIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 34235aea3dcdSIlya Dryomov struct ceph_osd_request *req = 34245aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 34255aea3dcdSIlya Dryomov 34267cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 34277cc5e38fSIlya Dryomov 34285aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 34295aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 34305aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 34315aea3dcdSIlya Dryomov found = true; 34325aea3dcdSIlya Dryomov } 34337cc5e38fSIlya Dryomov if (opts->osd_request_timeout && 34347cc5e38fSIlya Dryomov time_before(req->r_start_stamp, expiry_cutoff)) { 34357cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 34367cc5e38fSIlya Dryomov req->r_tid, osd->o_osd); 34377cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 34387cc5e38fSIlya Dryomov } 34395aea3dcdSIlya Dryomov } 3440922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 3441922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3442922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 3443922dab61SIlya Dryomov 3444922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 3445922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 3446922dab61SIlya Dryomov found = true; 3447922dab61SIlya Dryomov 3448922dab61SIlya Dryomov mutex_lock(&lreq->lock); 344919079203SIlya Dryomov if (lreq->is_watch && lreq->committed && !lreq->last_error) 3450922dab61SIlya Dryomov send_linger_ping(lreq); 3451922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3452922dab61SIlya Dryomov } 34535aea3dcdSIlya Dryomov 34545aea3dcdSIlya Dryomov if (found) 34553d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 34563d14c5d2SYehuda Sadeh } 34575aea3dcdSIlya Dryomov 34587cc5e38fSIlya Dryomov if (opts->osd_request_timeout) { 34597cc5e38fSIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 34607cc5e38fSIlya Dryomov struct ceph_osd_request *req = 34617cc5e38fSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 34627cc5e38fSIlya Dryomov 34637cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 34647cc5e38fSIlya Dryomov 34657cc5e38fSIlya Dryomov if (time_before(req->r_start_stamp, expiry_cutoff)) { 34667cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 34677cc5e38fSIlya Dryomov req->r_tid, osdc->homeless_osd.o_osd); 34687cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 34697cc5e38fSIlya Dryomov } 34707cc5e38fSIlya Dryomov } 34717cc5e38fSIlya Dryomov } 34727cc5e38fSIlya Dryomov 34735aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 34745aea3dcdSIlya Dryomov maybe_request_map(osdc); 34755aea3dcdSIlya Dryomov 34763d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 34775aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 34785aea3dcdSIlya Dryomov struct ceph_osd, 34793d14c5d2SYehuda Sadeh o_keepalive_item); 34803d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 34813d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 34823d14c5d2SYehuda Sadeh } 34833d14c5d2SYehuda Sadeh 34845aea3dcdSIlya Dryomov up_write(&osdc->lock); 3485fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 3486fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 34873d14c5d2SYehuda Sadeh } 34883d14c5d2SYehuda Sadeh 34893d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 34903d14c5d2SYehuda Sadeh { 34913d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 34923d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 34933d14c5d2SYehuda Sadeh osds_timeout_work.work); 3494a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 349542a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 34963d14c5d2SYehuda Sadeh 349742a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 34985aea3dcdSIlya Dryomov down_write(&osdc->lock); 349942a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 350042a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 350142a2c09fSIlya Dryomov break; 350242a2c09fSIlya Dryomov 35035aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 3504922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 35055aea3dcdSIlya Dryomov close_osd(osd); 350642a2c09fSIlya Dryomov } 350742a2c09fSIlya Dryomov 35085aea3dcdSIlya Dryomov up_write(&osdc->lock); 35093d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 35103d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 35113d14c5d2SYehuda Sadeh } 35123d14c5d2SYehuda Sadeh 3513205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 3514205ee118SIlya Dryomov struct ceph_object_locator *oloc) 3515205ee118SIlya Dryomov { 3516205ee118SIlya Dryomov u8 struct_v, struct_cv; 3517205ee118SIlya Dryomov u32 len; 3518205ee118SIlya Dryomov void *struct_end; 3519205ee118SIlya Dryomov int ret = 0; 3520205ee118SIlya Dryomov 3521205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3522205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3523205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3524205ee118SIlya Dryomov if (struct_v < 3) { 3525205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 3526205ee118SIlya Dryomov struct_v, struct_cv); 3527205ee118SIlya Dryomov goto e_inval; 3528205ee118SIlya Dryomov } 3529205ee118SIlya Dryomov if (struct_cv > 6) { 3530205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 3531205ee118SIlya Dryomov struct_v, struct_cv); 3532205ee118SIlya Dryomov goto e_inval; 3533205ee118SIlya Dryomov } 3534205ee118SIlya Dryomov len = ceph_decode_32(p); 3535205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3536205ee118SIlya Dryomov struct_end = *p + len; 3537205ee118SIlya Dryomov 3538205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 3539205ee118SIlya Dryomov *p += 4; /* skip preferred */ 3540205ee118SIlya Dryomov 3541205ee118SIlya Dryomov len = ceph_decode_32(p); 3542205ee118SIlya Dryomov if (len > 0) { 3543205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 3544205ee118SIlya Dryomov goto e_inval; 3545205ee118SIlya Dryomov } 3546205ee118SIlya Dryomov 3547205ee118SIlya Dryomov if (struct_v >= 5) { 3548cd08e0a2SYan, Zheng bool changed = false; 3549cd08e0a2SYan, Zheng 3550205ee118SIlya Dryomov len = ceph_decode_32(p); 3551205ee118SIlya Dryomov if (len > 0) { 355230c156d9SYan, Zheng ceph_decode_need(p, end, len, e_inval); 3553cd08e0a2SYan, Zheng if (!oloc->pool_ns || 3554cd08e0a2SYan, Zheng ceph_compare_string(oloc->pool_ns, *p, len)) 3555cd08e0a2SYan, Zheng changed = true; 355630c156d9SYan, Zheng *p += len; 3557cd08e0a2SYan, Zheng } else { 3558cd08e0a2SYan, Zheng if (oloc->pool_ns) 3559cd08e0a2SYan, Zheng changed = true; 3560cd08e0a2SYan, Zheng } 3561cd08e0a2SYan, Zheng if (changed) { 3562cd08e0a2SYan, Zheng /* redirect changes namespace */ 3563cd08e0a2SYan, Zheng pr_warn("ceph_object_locator::nspace is changed\n"); 3564cd08e0a2SYan, Zheng goto e_inval; 3565205ee118SIlya Dryomov } 3566205ee118SIlya Dryomov } 3567205ee118SIlya Dryomov 3568205ee118SIlya Dryomov if (struct_v >= 6) { 3569205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 3570205ee118SIlya Dryomov if (hash != -1) { 3571205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 3572205ee118SIlya Dryomov goto e_inval; 3573205ee118SIlya Dryomov } 3574205ee118SIlya Dryomov } 3575205ee118SIlya Dryomov 3576205ee118SIlya Dryomov /* skip the rest */ 3577205ee118SIlya Dryomov *p = struct_end; 3578205ee118SIlya Dryomov out: 3579205ee118SIlya Dryomov return ret; 3580205ee118SIlya Dryomov 3581205ee118SIlya Dryomov e_inval: 3582205ee118SIlya Dryomov ret = -EINVAL; 3583205ee118SIlya Dryomov goto out; 3584205ee118SIlya Dryomov } 3585205ee118SIlya Dryomov 3586205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 3587205ee118SIlya Dryomov struct ceph_request_redirect *redir) 3588205ee118SIlya Dryomov { 3589205ee118SIlya Dryomov u8 struct_v, struct_cv; 3590205ee118SIlya Dryomov u32 len; 3591205ee118SIlya Dryomov void *struct_end; 3592205ee118SIlya Dryomov int ret; 3593205ee118SIlya Dryomov 3594205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3595205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3596205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3597205ee118SIlya Dryomov if (struct_cv > 1) { 3598205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 3599205ee118SIlya Dryomov struct_v, struct_cv); 3600205ee118SIlya Dryomov goto e_inval; 3601205ee118SIlya Dryomov } 3602205ee118SIlya Dryomov len = ceph_decode_32(p); 3603205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3604205ee118SIlya Dryomov struct_end = *p + len; 3605205ee118SIlya Dryomov 3606205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 3607205ee118SIlya Dryomov if (ret) 3608205ee118SIlya Dryomov goto out; 3609205ee118SIlya Dryomov 3610205ee118SIlya Dryomov len = ceph_decode_32(p); 3611205ee118SIlya Dryomov if (len > 0) { 3612205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 3613205ee118SIlya Dryomov goto e_inval; 3614205ee118SIlya Dryomov } 3615205ee118SIlya Dryomov 3616205ee118SIlya Dryomov /* skip the rest */ 3617205ee118SIlya Dryomov *p = struct_end; 3618205ee118SIlya Dryomov out: 3619205ee118SIlya Dryomov return ret; 3620205ee118SIlya Dryomov 3621205ee118SIlya Dryomov e_inval: 3622205ee118SIlya Dryomov ret = -EINVAL; 3623205ee118SIlya Dryomov goto out; 3624205ee118SIlya Dryomov } 3625205ee118SIlya Dryomov 3626fe5da05eSIlya Dryomov struct MOSDOpReply { 3627fe5da05eSIlya Dryomov struct ceph_pg pgid; 3628fe5da05eSIlya Dryomov u64 flags; 3629fe5da05eSIlya Dryomov int result; 3630fe5da05eSIlya Dryomov u32 epoch; 3631fe5da05eSIlya Dryomov int num_ops; 3632fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 3633fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 3634fe5da05eSIlya Dryomov int retry_attempt; 3635fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 3636fe5da05eSIlya Dryomov u64 user_version; 3637fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 3638fe5da05eSIlya Dryomov }; 363925845472SSage Weil 3640fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 36413d14c5d2SYehuda Sadeh { 3642fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 3643fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 3644fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 3645fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 3646b0b31a8fSIlya Dryomov u8 decode_redir; 3647fe5da05eSIlya Dryomov u32 len; 3648fe5da05eSIlya Dryomov int ret; 3649fe5da05eSIlya Dryomov int i; 36503d14c5d2SYehuda Sadeh 3651fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 3652fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 3653fe5da05eSIlya Dryomov p += len; /* skip oid */ 36541b83bef2SSage Weil 3655fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 3656fe5da05eSIlya Dryomov if (ret) 3657fe5da05eSIlya Dryomov return ret; 36581b83bef2SSage Weil 3659fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 3660fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 3661fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 3662fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 3663fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 3664fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 36651b83bef2SSage Weil 3666fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 3667fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 3668fe5da05eSIlya Dryomov goto e_inval; 36691b83bef2SSage Weil 3670fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 3671fe5da05eSIlya Dryomov e_inval); 3672fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 36731b83bef2SSage Weil struct ceph_osd_op *op = p; 36741b83bef2SSage Weil 3675fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 36761b83bef2SSage Weil p += sizeof(*op); 36771b83bef2SSage Weil } 3678fe5da05eSIlya Dryomov 3679fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 3680fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 3681fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 3682fe5da05eSIlya Dryomov 3683fe5da05eSIlya Dryomov if (version >= 5) { 3684fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 3685fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 3686fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 3687fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 3688fe5da05eSIlya Dryomov } else { 3689fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 3690fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 36911b83bef2SSage Weil } 36921b83bef2SSage Weil 3693fe5da05eSIlya Dryomov if (version >= 6) { 3694fe5da05eSIlya Dryomov if (version >= 7) 3695fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 3696b0b31a8fSIlya Dryomov else 3697b0b31a8fSIlya Dryomov decode_redir = 1; 3698b0b31a8fSIlya Dryomov } else { 3699b0b31a8fSIlya Dryomov decode_redir = 0; 3700b0b31a8fSIlya Dryomov } 3701b0b31a8fSIlya Dryomov 3702b0b31a8fSIlya Dryomov if (decode_redir) { 3703fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 3704fe5da05eSIlya Dryomov if (ret) 3705fe5da05eSIlya Dryomov return ret; 3706205ee118SIlya Dryomov } else { 3707fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 3708205ee118SIlya Dryomov } 3709205ee118SIlya Dryomov 3710fe5da05eSIlya Dryomov return 0; 3711205ee118SIlya Dryomov 3712fe5da05eSIlya Dryomov e_inval: 3713fe5da05eSIlya Dryomov return -EINVAL; 3714fe5da05eSIlya Dryomov } 3715fe5da05eSIlya Dryomov 3716fe5da05eSIlya Dryomov /* 3717b18b9550SIlya Dryomov * Handle MOSDOpReply. Set ->r_result and call the callback if it is 3718b18b9550SIlya Dryomov * specified. 3719fe5da05eSIlya Dryomov */ 37205aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 3721fe5da05eSIlya Dryomov { 37225aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 3723fe5da05eSIlya Dryomov struct ceph_osd_request *req; 3724fe5da05eSIlya Dryomov struct MOSDOpReply m; 3725fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 3726fe5da05eSIlya Dryomov u32 data_len = 0; 3727fe5da05eSIlya Dryomov int ret; 3728fe5da05eSIlya Dryomov int i; 3729fe5da05eSIlya Dryomov 3730fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 3731fe5da05eSIlya Dryomov 37325aea3dcdSIlya Dryomov down_read(&osdc->lock); 37335aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 37345aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 37355aea3dcdSIlya Dryomov goto out_unlock_osdc; 3736fe5da05eSIlya Dryomov } 37375aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 37385aea3dcdSIlya Dryomov 37395aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 37405aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 37415aea3dcdSIlya Dryomov if (!req) { 37425aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 37435aea3dcdSIlya Dryomov goto out_unlock_session; 37445aea3dcdSIlya Dryomov } 3745fe5da05eSIlya Dryomov 3746cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns; 3747fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 3748cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = NULL; 3749fe5da05eSIlya Dryomov if (ret) { 3750fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 3751fe5da05eSIlya Dryomov req->r_tid, ret); 3752fe5da05eSIlya Dryomov ceph_msg_dump(msg); 3753fe5da05eSIlya Dryomov goto fail_request; 3754fe5da05eSIlya Dryomov } 3755fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 3756fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 3757fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 3758fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 3759fe5da05eSIlya Dryomov 3760fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 3761fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 3762fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 3763fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 3764fe5da05eSIlya Dryomov req->r_attempts - 1); 37655aea3dcdSIlya Dryomov goto out_unlock_session; 3766fe5da05eSIlya Dryomov } 3767fe5da05eSIlya Dryomov } else { 3768fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 3769fe5da05eSIlya Dryomov } 3770fe5da05eSIlya Dryomov 3771fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 3772fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 3773fe5da05eSIlya Dryomov m.redirect.oloc.pool); 37745aea3dcdSIlya Dryomov unlink_request(osd, req); 37755aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 3776205ee118SIlya Dryomov 377730c156d9SYan, Zheng /* 377830c156d9SYan, Zheng * Not ceph_oloc_copy() - changing pool_ns is not 377930c156d9SYan, Zheng * supported. 378030c156d9SYan, Zheng */ 378130c156d9SYan, Zheng req->r_t.target_oloc.pool = m.redirect.oloc.pool; 3782890bd0f8SJerry Lee req->r_flags |= CEPH_OSD_FLAG_REDIRECTED | 3783890bd0f8SJerry Lee CEPH_OSD_FLAG_IGNORE_OVERLAY | 3784890bd0f8SJerry Lee CEPH_OSD_FLAG_IGNORE_CACHE; 37855aea3dcdSIlya Dryomov req->r_tid = 0; 37865aea3dcdSIlya Dryomov __submit_request(req, false); 37875aea3dcdSIlya Dryomov goto out_unlock_osdc; 3788205ee118SIlya Dryomov } 3789205ee118SIlya Dryomov 3790117d96a0SIlya Dryomov if (m.result == -EAGAIN) { 3791117d96a0SIlya Dryomov dout("req %p tid %llu EAGAIN\n", req, req->r_tid); 3792117d96a0SIlya Dryomov unlink_request(osd, req); 3793117d96a0SIlya Dryomov mutex_unlock(&osd->lock); 3794117d96a0SIlya Dryomov 3795117d96a0SIlya Dryomov /* 3796117d96a0SIlya Dryomov * The object is missing on the replica or not (yet) 3797117d96a0SIlya Dryomov * readable. Clear pgid to force a resend to the primary 3798117d96a0SIlya Dryomov * via legacy_change. 3799117d96a0SIlya Dryomov */ 3800117d96a0SIlya Dryomov req->r_t.pgid.pool = 0; 3801117d96a0SIlya Dryomov req->r_t.pgid.seed = 0; 3802117d96a0SIlya Dryomov WARN_ON(!req->r_t.used_replica); 3803117d96a0SIlya Dryomov req->r_flags &= ~(CEPH_OSD_FLAG_BALANCE_READS | 3804117d96a0SIlya Dryomov CEPH_OSD_FLAG_LOCALIZE_READS); 3805117d96a0SIlya Dryomov req->r_tid = 0; 3806117d96a0SIlya Dryomov __submit_request(req, false); 3807117d96a0SIlya Dryomov goto out_unlock_osdc; 3808117d96a0SIlya Dryomov } 3809117d96a0SIlya Dryomov 3810fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 3811fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 3812fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 3813fe5da05eSIlya Dryomov goto fail_request; 3814fe5da05eSIlya Dryomov } 3815fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 3816fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 3817fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 3818fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 3819fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 3820fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 3821fe5da05eSIlya Dryomov } 3822fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 3823fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 3824fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 3825fe5da05eSIlya Dryomov goto fail_request; 3826fe5da05eSIlya Dryomov } 3827b18b9550SIlya Dryomov dout("%s req %p tid %llu result %d data_len %u\n", __func__, 3828b18b9550SIlya Dryomov req, req->r_tid, m.result, data_len); 38293d14c5d2SYehuda Sadeh 3830b18b9550SIlya Dryomov /* 3831b18b9550SIlya Dryomov * Since we only ever request ONDISK, we should only ever get 3832b18b9550SIlya Dryomov * one (type of) reply back. 3833b18b9550SIlya Dryomov */ 3834b18b9550SIlya Dryomov WARN_ON(!(m.flags & CEPH_OSD_FLAG_ONDISK)); 3835fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 383645ee2c1dSIlya Dryomov finish_request(req); 38375aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 38385aea3dcdSIlya Dryomov up_read(&osdc->lock); 38393d14c5d2SYehuda Sadeh 3840fe5da05eSIlya Dryomov __complete_request(req); 38413d14c5d2SYehuda Sadeh return; 3842fe5da05eSIlya Dryomov 3843fe5da05eSIlya Dryomov fail_request: 38444609245eSIlya Dryomov complete_request(req, -EIO); 38455aea3dcdSIlya Dryomov out_unlock_session: 38465aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 38475aea3dcdSIlya Dryomov out_unlock_osdc: 38485aea3dcdSIlya Dryomov up_read(&osdc->lock); 38493d14c5d2SYehuda Sadeh } 38503d14c5d2SYehuda Sadeh 385142c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 385242c1b124SIlya Dryomov { 385342c1b124SIlya Dryomov struct rb_node *n; 385442c1b124SIlya Dryomov 385542c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->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 385942c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 386042c1b124SIlya Dryomov } 386142c1b124SIlya Dryomov } 386242c1b124SIlya Dryomov 38635aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 38643d14c5d2SYehuda Sadeh { 38655aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 38663d14c5d2SYehuda Sadeh 38675aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 38685aea3dcdSIlya Dryomov if (!pi) 38695aea3dcdSIlya Dryomov return false; 38703d14c5d2SYehuda Sadeh 38715aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 38723d14c5d2SYehuda Sadeh } 38733d14c5d2SYehuda Sadeh 3874922dab61SIlya Dryomov static enum calc_target_result 3875922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 3876922dab61SIlya Dryomov { 3877922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3878922dab61SIlya Dryomov enum calc_target_result ct_res; 3879922dab61SIlya Dryomov 38808edf84baSIlya Dryomov ct_res = calc_target(osdc, &lreq->t, true); 3881922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 3882922dab61SIlya Dryomov struct ceph_osd *osd; 3883922dab61SIlya Dryomov 3884922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3885922dab61SIlya Dryomov if (osd != lreq->osd) { 3886922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3887922dab61SIlya Dryomov link_linger(osd, lreq); 3888922dab61SIlya Dryomov } 3889922dab61SIlya Dryomov } 3890922dab61SIlya Dryomov 3891922dab61SIlya Dryomov return ct_res; 3892922dab61SIlya Dryomov } 3893922dab61SIlya Dryomov 38943d14c5d2SYehuda Sadeh /* 38955aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 38963d14c5d2SYehuda Sadeh */ 38975aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 38985aea3dcdSIlya Dryomov bool force_resend, 38995aea3dcdSIlya Dryomov bool cleared_full, 39005aea3dcdSIlya Dryomov bool check_pool_cleared_full, 39015aea3dcdSIlya Dryomov struct rb_root *need_resend, 39025aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 39033d14c5d2SYehuda Sadeh { 39045aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 39055aea3dcdSIlya Dryomov struct rb_node *n; 39065aea3dcdSIlya Dryomov bool force_resend_writes; 39073d14c5d2SYehuda Sadeh 3908922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 3909922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3910922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3911922dab61SIlya Dryomov enum calc_target_result ct_res; 3912922dab61SIlya Dryomov 3913922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 3914922dab61SIlya Dryomov 3915922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 3916922dab61SIlya Dryomov lreq->linger_id); 3917922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 3918922dab61SIlya Dryomov switch (ct_res) { 3919922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 3920922dab61SIlya Dryomov force_resend_writes = cleared_full || 3921922dab61SIlya Dryomov (check_pool_cleared_full && 3922922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 3923922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 3924922dab61SIlya Dryomov break; 3925922dab61SIlya Dryomov 3926df561f66SGustavo A. R. Silva fallthrough; 3927922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 39284609245eSIlya Dryomov cancel_linger_map_check(lreq); 3929922dab61SIlya Dryomov /* 3930922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 3931922dab61SIlya Dryomov * may have already added it to the list, since 3932922dab61SIlya Dryomov * it's not unlinked here. 3933922dab61SIlya Dryomov */ 3934922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 3935922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 3936922dab61SIlya Dryomov break; 3937922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 3938a10bcb19SIlya Dryomov list_del_init(&lreq->scan_item); 39394609245eSIlya Dryomov check_linger_pool_dne(lreq); 3940922dab61SIlya Dryomov break; 3941922dab61SIlya Dryomov } 3942922dab61SIlya Dryomov } 3943922dab61SIlya Dryomov 39445aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 39455aea3dcdSIlya Dryomov struct ceph_osd_request *req = 39465aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 39475aea3dcdSIlya Dryomov enum calc_target_result ct_res; 3948ab60b16dSAlex Elder 39494609245eSIlya Dryomov n = rb_next(n); /* unlink_request(), check_pool_dne() */ 3950ab60b16dSAlex Elder 39515aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 39528edf84baSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, false); 39535aea3dcdSIlya Dryomov switch (ct_res) { 39545aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 39555aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 39565aea3dcdSIlya Dryomov (check_pool_cleared_full && 39575aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 39585aea3dcdSIlya Dryomov if (!force_resend && 39595aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 39605aea3dcdSIlya Dryomov !force_resend_writes)) 39615aea3dcdSIlya Dryomov break; 3962a40c4f10SYehuda Sadeh 3963df561f66SGustavo A. R. Silva fallthrough; 39645aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 39654609245eSIlya Dryomov cancel_map_check(req); 39665aea3dcdSIlya Dryomov unlink_request(osd, req); 39675aea3dcdSIlya Dryomov insert_request(need_resend, req); 39685aea3dcdSIlya Dryomov break; 39695aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 39704609245eSIlya Dryomov check_pool_dne(req); 39715aea3dcdSIlya Dryomov break; 3972a40c4f10SYehuda Sadeh } 39733d14c5d2SYehuda Sadeh } 39743d14c5d2SYehuda Sadeh } 39756f6c7006SSage Weil 397642c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 39775aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 39785aea3dcdSIlya Dryomov struct rb_root *need_resend, 39795aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 398042c1b124SIlya Dryomov { 398142c1b124SIlya Dryomov struct ceph_osdmap *newmap; 398242c1b124SIlya Dryomov struct rb_node *n; 398342c1b124SIlya Dryomov bool skipped_map = false; 398442c1b124SIlya Dryomov bool was_full; 398542c1b124SIlya Dryomov 3986b7ec35b3SIlya Dryomov was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 398742c1b124SIlya Dryomov set_pool_was_full(osdc); 398842c1b124SIlya Dryomov 398942c1b124SIlya Dryomov if (incremental) 3990cd1a677cSIlya Dryomov newmap = osdmap_apply_incremental(&p, end, 3991cd1a677cSIlya Dryomov ceph_msgr2(osdc->client), 3992cd1a677cSIlya Dryomov osdc->osdmap); 399342c1b124SIlya Dryomov else 3994cd1a677cSIlya Dryomov newmap = ceph_osdmap_decode(&p, end, ceph_msgr2(osdc->client)); 399542c1b124SIlya Dryomov if (IS_ERR(newmap)) 399642c1b124SIlya Dryomov return PTR_ERR(newmap); 399742c1b124SIlya Dryomov 399842c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 399942c1b124SIlya Dryomov /* 400042c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 400142c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 400242c1b124SIlya Dryomov * should be false. 400342c1b124SIlya Dryomov */ 400442c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 400542c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 400642c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 400742c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 400842c1b124SIlya Dryomov 400942c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 401042c1b124SIlya Dryomov if (old_pi) 401142c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 401242c1b124SIlya Dryomov else 401342c1b124SIlya Dryomov WARN_ON(pi->was_full); 401442c1b124SIlya Dryomov } 401542c1b124SIlya Dryomov 401642c1b124SIlya Dryomov if (osdc->osdmap->epoch && 401742c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 401842c1b124SIlya Dryomov WARN_ON(incremental); 401942c1b124SIlya Dryomov skipped_map = true; 402042c1b124SIlya Dryomov } 402142c1b124SIlya Dryomov 402242c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 402342c1b124SIlya Dryomov osdc->osdmap = newmap; 402442c1b124SIlya Dryomov } 402542c1b124SIlya Dryomov 4026b7ec35b3SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 40275aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 40285aea3dcdSIlya Dryomov need_resend, need_resend_linger); 40295aea3dcdSIlya Dryomov 40305aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 40315aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 40325aea3dcdSIlya Dryomov 40335aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 40345aea3dcdSIlya Dryomov 40355aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 40365aea3dcdSIlya Dryomov need_resend_linger); 40375aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 40385aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 40395aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 40405aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 40415aea3dcdSIlya Dryomov close_osd(osd); 40425aea3dcdSIlya Dryomov } 404342c1b124SIlya Dryomov 404442c1b124SIlya Dryomov return 0; 404542c1b124SIlya Dryomov } 40466f6c7006SSage Weil 40475aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 40485aea3dcdSIlya Dryomov struct rb_root *need_resend, 40495aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 40505aea3dcdSIlya Dryomov { 4051922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 405204c7d789SIlya Dryomov enum calc_target_result ct_res; 40535aea3dcdSIlya Dryomov struct rb_node *n; 40545aea3dcdSIlya Dryomov 405504c7d789SIlya Dryomov /* make sure need_resend targets reflect latest map */ 405604c7d789SIlya Dryomov for (n = rb_first(need_resend); n; ) { 405704c7d789SIlya Dryomov struct ceph_osd_request *req = 405804c7d789SIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 405904c7d789SIlya Dryomov 406004c7d789SIlya Dryomov n = rb_next(n); 406104c7d789SIlya Dryomov 406204c7d789SIlya Dryomov if (req->r_t.epoch < osdc->osdmap->epoch) { 40638edf84baSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, false); 406404c7d789SIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) { 406504c7d789SIlya Dryomov erase_request(need_resend, req); 406604c7d789SIlya Dryomov check_pool_dne(req); 406704c7d789SIlya Dryomov } 406804c7d789SIlya Dryomov } 406904c7d789SIlya Dryomov } 407004c7d789SIlya Dryomov 40715aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 40725aea3dcdSIlya Dryomov struct ceph_osd_request *req = 40735aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 40745aea3dcdSIlya Dryomov struct ceph_osd *osd; 40755aea3dcdSIlya Dryomov 40765aea3dcdSIlya Dryomov n = rb_next(n); 40775aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 40785aea3dcdSIlya Dryomov 40795aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 40805aea3dcdSIlya Dryomov link_request(osd, req); 40815aea3dcdSIlya Dryomov if (!req->r_linger) { 40825aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 40835aea3dcdSIlya Dryomov send_request(req); 4084922dab61SIlya Dryomov } else { 4085922dab61SIlya Dryomov cancel_linger_request(req); 40865aea3dcdSIlya Dryomov } 40875aea3dcdSIlya Dryomov } 4088922dab61SIlya Dryomov 4089922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 4090922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 4091922dab61SIlya Dryomov send_linger(lreq); 4092922dab61SIlya Dryomov 4093922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 4094922dab61SIlya Dryomov } 40955aea3dcdSIlya Dryomov } 40965aea3dcdSIlya Dryomov 40973d14c5d2SYehuda Sadeh /* 40983d14c5d2SYehuda Sadeh * Process updated osd map. 40993d14c5d2SYehuda Sadeh * 41003d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 41013d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 41023d14c5d2SYehuda Sadeh * off to different OSDs as needed. 41033d14c5d2SYehuda Sadeh */ 41043d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 41053d14c5d2SYehuda Sadeh { 410642c1b124SIlya Dryomov void *p = msg->front.iov_base; 410742c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 41083d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 41093d14c5d2SYehuda Sadeh u32 epoch; 41103d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 41115aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 41125aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 411342c1b124SIlya Dryomov bool handled_incremental = false; 411442c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 411542c1b124SIlya Dryomov bool pauserd, pausewr; 411642c1b124SIlya Dryomov int err; 41173d14c5d2SYehuda Sadeh 411842c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 41195aea3dcdSIlya Dryomov down_write(&osdc->lock); 41203d14c5d2SYehuda Sadeh 41213d14c5d2SYehuda Sadeh /* verify fsid */ 41223d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 41233d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 41243d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 412542c1b124SIlya Dryomov goto bad; 41263d14c5d2SYehuda Sadeh 4127b7ec35b3SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 4128b7ec35b3SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 4129b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 413042c1b124SIlya Dryomov have_pool_full(osdc); 41319a1ea2dbSJosh Durgin 41323d14c5d2SYehuda Sadeh /* incremental maps */ 41333d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 41343d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 41353d14c5d2SYehuda Sadeh while (nr_maps > 0) { 41363d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 41373d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 41383d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 41393d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 414042c1b124SIlya Dryomov if (osdc->osdmap->epoch && 414142c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 41423d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 41433d14c5d2SYehuda Sadeh epoch, maplen); 41445aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 41455aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 414642c1b124SIlya Dryomov if (err) 41473d14c5d2SYehuda Sadeh goto bad; 414842c1b124SIlya Dryomov handled_incremental = true; 41493d14c5d2SYehuda Sadeh } else { 41503d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 41513d14c5d2SYehuda Sadeh epoch, maplen); 41523d14c5d2SYehuda Sadeh } 415342c1b124SIlya Dryomov p += maplen; 41543d14c5d2SYehuda Sadeh nr_maps--; 41553d14c5d2SYehuda Sadeh } 415642c1b124SIlya Dryomov if (handled_incremental) 41573d14c5d2SYehuda Sadeh goto done; 41583d14c5d2SYehuda Sadeh 41593d14c5d2SYehuda Sadeh /* full maps */ 41603d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 41613d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 41623d14c5d2SYehuda Sadeh while (nr_maps) { 41633d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 41643d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 41653d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 41663d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 41673d14c5d2SYehuda Sadeh if (nr_maps > 1) { 41683d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 41693d14c5d2SYehuda Sadeh epoch, maplen); 4170e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 41713d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 41723d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 41733d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 41743d14c5d2SYehuda Sadeh } else { 41753d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 41765aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 41775aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 417842c1b124SIlya Dryomov if (err) 41793d14c5d2SYehuda Sadeh goto bad; 41803d14c5d2SYehuda Sadeh } 41813d14c5d2SYehuda Sadeh p += maplen; 41823d14c5d2SYehuda Sadeh nr_maps--; 41833d14c5d2SYehuda Sadeh } 41843d14c5d2SYehuda Sadeh 41853d14c5d2SYehuda Sadeh done: 4186cd634fb6SSage Weil /* 4187cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 4188cd634fb6SSage Weil * we find out when we are no longer full and stop returning 4189cd634fb6SSage Weil * ENOSPC. 4190cd634fb6SSage Weil */ 4191b7ec35b3SIlya Dryomov pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 4192b7ec35b3SIlya Dryomov pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 4193b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 419442c1b124SIlya Dryomov have_pool_full(osdc); 419558eb7932SJeff Layton if (was_pauserd || was_pausewr || pauserd || pausewr || 419658eb7932SJeff Layton osdc->osdmap->epoch < osdc->epoch_barrier) 419742c1b124SIlya Dryomov maybe_request_map(osdc); 4198cd634fb6SSage Weil 41995aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 420042c1b124SIlya Dryomov 4201fc36d0a4SJeff Layton ceph_osdc_abort_on_full(osdc); 420242c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 420342c1b124SIlya Dryomov osdc->osdmap->epoch); 42045aea3dcdSIlya Dryomov up_write(&osdc->lock); 42053d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 42063d14c5d2SYehuda Sadeh return; 42073d14c5d2SYehuda Sadeh 42083d14c5d2SYehuda Sadeh bad: 42093d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 42103d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 42115aea3dcdSIlya Dryomov up_write(&osdc->lock); 42125aea3dcdSIlya Dryomov } 42135aea3dcdSIlya Dryomov 42145aea3dcdSIlya Dryomov /* 42155aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 42165aea3dcdSIlya Dryomov */ 42175aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 42185aea3dcdSIlya Dryomov { 42195aea3dcdSIlya Dryomov struct rb_node *n; 42205aea3dcdSIlya Dryomov 4221a02a946dSIlya Dryomov clear_backoffs(osd); 4222a02a946dSIlya Dryomov 4223922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 42245aea3dcdSIlya Dryomov struct ceph_osd_request *req = 42255aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 42265aea3dcdSIlya Dryomov 4227922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 4228922dab61SIlya Dryomov 42295aea3dcdSIlya Dryomov if (!req->r_linger) { 42305aea3dcdSIlya Dryomov if (!req->r_t.paused) 42315aea3dcdSIlya Dryomov send_request(req); 4232922dab61SIlya Dryomov } else { 4233922dab61SIlya Dryomov cancel_linger_request(req); 42345aea3dcdSIlya Dryomov } 42355aea3dcdSIlya Dryomov } 4236922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 4237922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 4238922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 4239922dab61SIlya Dryomov 4240922dab61SIlya Dryomov send_linger(lreq); 4241922dab61SIlya Dryomov } 42425aea3dcdSIlya Dryomov } 42435aea3dcdSIlya Dryomov 42445aea3dcdSIlya Dryomov /* 42455aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 42465aea3dcdSIlya Dryomov */ 42475aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 42485aea3dcdSIlya Dryomov { 42495aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 42505aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 42515aea3dcdSIlya Dryomov 42525aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 42535aea3dcdSIlya Dryomov 42545aea3dcdSIlya Dryomov down_write(&osdc->lock); 42555aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 42565aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 42575aea3dcdSIlya Dryomov goto out_unlock; 42585aea3dcdSIlya Dryomov } 42595aea3dcdSIlya Dryomov 42605aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 42615aea3dcdSIlya Dryomov kick_osd_requests(osd); 42625aea3dcdSIlya Dryomov maybe_request_map(osdc); 42635aea3dcdSIlya Dryomov 42645aea3dcdSIlya Dryomov out_unlock: 42655aea3dcdSIlya Dryomov up_write(&osdc->lock); 42663d14c5d2SYehuda Sadeh } 42673d14c5d2SYehuda Sadeh 4268a02a946dSIlya Dryomov struct MOSDBackoff { 4269a02a946dSIlya Dryomov struct ceph_spg spgid; 4270a02a946dSIlya Dryomov u32 map_epoch; 4271a02a946dSIlya Dryomov u8 op; 4272a02a946dSIlya Dryomov u64 id; 4273a02a946dSIlya Dryomov struct ceph_hobject_id *begin; 4274a02a946dSIlya Dryomov struct ceph_hobject_id *end; 4275a02a946dSIlya Dryomov }; 4276a02a946dSIlya Dryomov 4277a02a946dSIlya Dryomov static int decode_MOSDBackoff(const struct ceph_msg *msg, struct MOSDBackoff *m) 4278a02a946dSIlya Dryomov { 4279a02a946dSIlya Dryomov void *p = msg->front.iov_base; 4280a02a946dSIlya Dryomov void *const end = p + msg->front.iov_len; 4281a02a946dSIlya Dryomov u8 struct_v; 4282a02a946dSIlya Dryomov u32 struct_len; 4283a02a946dSIlya Dryomov int ret; 4284a02a946dSIlya Dryomov 4285a02a946dSIlya Dryomov ret = ceph_start_decoding(&p, end, 1, "spg_t", &struct_v, &struct_len); 4286a02a946dSIlya Dryomov if (ret) 4287a02a946dSIlya Dryomov return ret; 4288a02a946dSIlya Dryomov 4289a02a946dSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->spgid.pgid); 4290a02a946dSIlya Dryomov if (ret) 4291a02a946dSIlya Dryomov return ret; 4292a02a946dSIlya Dryomov 4293a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->spgid.shard, e_inval); 4294a02a946dSIlya Dryomov ceph_decode_32_safe(&p, end, m->map_epoch, e_inval); 4295a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->op, e_inval); 4296a02a946dSIlya Dryomov ceph_decode_64_safe(&p, end, m->id, e_inval); 4297a02a946dSIlya Dryomov 4298a02a946dSIlya Dryomov m->begin = kzalloc(sizeof(*m->begin), GFP_NOIO); 4299a02a946dSIlya Dryomov if (!m->begin) 4300a02a946dSIlya Dryomov return -ENOMEM; 4301a02a946dSIlya Dryomov 4302a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->begin); 4303a02a946dSIlya Dryomov if (ret) { 4304a02a946dSIlya Dryomov free_hoid(m->begin); 4305a02a946dSIlya Dryomov return ret; 4306a02a946dSIlya Dryomov } 4307a02a946dSIlya Dryomov 4308a02a946dSIlya Dryomov m->end = kzalloc(sizeof(*m->end), GFP_NOIO); 4309a02a946dSIlya Dryomov if (!m->end) { 4310a02a946dSIlya Dryomov free_hoid(m->begin); 4311a02a946dSIlya Dryomov return -ENOMEM; 4312a02a946dSIlya Dryomov } 4313a02a946dSIlya Dryomov 4314a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->end); 4315a02a946dSIlya Dryomov if (ret) { 4316a02a946dSIlya Dryomov free_hoid(m->begin); 4317a02a946dSIlya Dryomov free_hoid(m->end); 4318a02a946dSIlya Dryomov return ret; 4319a02a946dSIlya Dryomov } 4320a02a946dSIlya Dryomov 4321a02a946dSIlya Dryomov return 0; 4322a02a946dSIlya Dryomov 4323a02a946dSIlya Dryomov e_inval: 4324a02a946dSIlya Dryomov return -EINVAL; 4325a02a946dSIlya Dryomov } 4326a02a946dSIlya Dryomov 4327a02a946dSIlya Dryomov static struct ceph_msg *create_backoff_message( 4328a02a946dSIlya Dryomov const struct ceph_osd_backoff *backoff, 4329a02a946dSIlya Dryomov u32 map_epoch) 4330a02a946dSIlya Dryomov { 4331a02a946dSIlya Dryomov struct ceph_msg *msg; 4332a02a946dSIlya Dryomov void *p, *end; 4333a02a946dSIlya Dryomov int msg_size; 4334a02a946dSIlya Dryomov 4335a02a946dSIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 4336a02a946dSIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 4337a02a946dSIlya Dryomov msg_size += 4 + 1 + 8; /* map_epoch, op, id */ 4338a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4339a02a946dSIlya Dryomov hoid_encoding_size(backoff->begin); 4340a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4341a02a946dSIlya Dryomov hoid_encoding_size(backoff->end); 4342a02a946dSIlya Dryomov 4343a02a946dSIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_BACKOFF, msg_size, GFP_NOIO, true); 4344a02a946dSIlya Dryomov if (!msg) 4345a02a946dSIlya Dryomov return NULL; 4346a02a946dSIlya Dryomov 4347a02a946dSIlya Dryomov p = msg->front.iov_base; 4348a02a946dSIlya Dryomov end = p + msg->front_alloc_len; 4349a02a946dSIlya Dryomov 4350a02a946dSIlya Dryomov encode_spgid(&p, &backoff->spgid); 4351a02a946dSIlya Dryomov ceph_encode_32(&p, map_epoch); 4352a02a946dSIlya Dryomov ceph_encode_8(&p, CEPH_OSD_BACKOFF_OP_ACK_BLOCK); 4353a02a946dSIlya Dryomov ceph_encode_64(&p, backoff->id); 4354a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->begin); 4355a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->end); 4356a02a946dSIlya Dryomov BUG_ON(p != end); 4357a02a946dSIlya Dryomov 4358a02a946dSIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 4359a02a946dSIlya Dryomov msg->hdr.version = cpu_to_le16(1); /* MOSDBackoff v1 */ 4360a02a946dSIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 4361a02a946dSIlya Dryomov 4362a02a946dSIlya Dryomov return msg; 4363a02a946dSIlya Dryomov } 4364a02a946dSIlya Dryomov 4365a02a946dSIlya Dryomov static void handle_backoff_block(struct ceph_osd *osd, struct MOSDBackoff *m) 4366a02a946dSIlya Dryomov { 4367a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4368a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4369a02a946dSIlya Dryomov struct ceph_msg *msg; 4370a02a946dSIlya Dryomov 4371a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4372a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4373a02a946dSIlya Dryomov 4374a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &m->spgid); 4375a02a946dSIlya Dryomov if (!spg) { 4376a02a946dSIlya Dryomov spg = alloc_spg_mapping(); 4377a02a946dSIlya Dryomov if (!spg) { 4378a02a946dSIlya Dryomov pr_err("%s failed to allocate spg\n", __func__); 4379a02a946dSIlya Dryomov return; 4380a02a946dSIlya Dryomov } 4381a02a946dSIlya Dryomov spg->spgid = m->spgid; /* struct */ 4382a02a946dSIlya Dryomov insert_spg_mapping(&osd->o_backoff_mappings, spg); 4383a02a946dSIlya Dryomov } 4384a02a946dSIlya Dryomov 4385a02a946dSIlya Dryomov backoff = alloc_backoff(); 4386a02a946dSIlya Dryomov if (!backoff) { 4387a02a946dSIlya Dryomov pr_err("%s failed to allocate backoff\n", __func__); 4388a02a946dSIlya Dryomov return; 4389a02a946dSIlya Dryomov } 4390a02a946dSIlya Dryomov backoff->spgid = m->spgid; /* struct */ 4391a02a946dSIlya Dryomov backoff->id = m->id; 4392a02a946dSIlya Dryomov backoff->begin = m->begin; 4393a02a946dSIlya Dryomov m->begin = NULL; /* backoff now owns this */ 4394a02a946dSIlya Dryomov backoff->end = m->end; 4395a02a946dSIlya Dryomov m->end = NULL; /* ditto */ 4396a02a946dSIlya Dryomov 4397a02a946dSIlya Dryomov insert_backoff(&spg->backoffs, backoff); 4398a02a946dSIlya Dryomov insert_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4399a02a946dSIlya Dryomov 4400a02a946dSIlya Dryomov /* 4401a02a946dSIlya Dryomov * Ack with original backoff's epoch so that the OSD can 4402a02a946dSIlya Dryomov * discard this if there was a PG split. 4403a02a946dSIlya Dryomov */ 4404a02a946dSIlya Dryomov msg = create_backoff_message(backoff, m->map_epoch); 4405a02a946dSIlya Dryomov if (!msg) { 4406a02a946dSIlya Dryomov pr_err("%s failed to allocate msg\n", __func__); 4407a02a946dSIlya Dryomov return; 4408a02a946dSIlya Dryomov } 4409a02a946dSIlya Dryomov ceph_con_send(&osd->o_con, msg); 4410a02a946dSIlya Dryomov } 4411a02a946dSIlya Dryomov 4412a02a946dSIlya Dryomov static bool target_contained_by(const struct ceph_osd_request_target *t, 4413a02a946dSIlya Dryomov const struct ceph_hobject_id *begin, 4414a02a946dSIlya Dryomov const struct ceph_hobject_id *end) 4415a02a946dSIlya Dryomov { 4416a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 4417a02a946dSIlya Dryomov int cmp; 4418a02a946dSIlya Dryomov 4419a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, t); 4420a02a946dSIlya Dryomov cmp = hoid_compare(&hoid, begin); 4421a02a946dSIlya Dryomov return !cmp || (cmp > 0 && hoid_compare(&hoid, end) < 0); 4422a02a946dSIlya Dryomov } 4423a02a946dSIlya Dryomov 4424a02a946dSIlya Dryomov static void handle_backoff_unblock(struct ceph_osd *osd, 4425a02a946dSIlya Dryomov const struct MOSDBackoff *m) 4426a02a946dSIlya Dryomov { 4427a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4428a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4429a02a946dSIlya Dryomov struct rb_node *n; 4430a02a946dSIlya Dryomov 4431a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4432a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4433a02a946dSIlya Dryomov 4434a02a946dSIlya Dryomov backoff = lookup_backoff_by_id(&osd->o_backoffs_by_id, m->id); 4435a02a946dSIlya Dryomov if (!backoff) { 4436a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu backoff dne\n", 4437a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4438a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4439a02a946dSIlya Dryomov return; 4440a02a946dSIlya Dryomov } 4441a02a946dSIlya Dryomov 4442a02a946dSIlya Dryomov if (hoid_compare(backoff->begin, m->begin) && 4443a02a946dSIlya Dryomov hoid_compare(backoff->end, m->end)) { 4444a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu bad range?\n", 4445a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4446a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4447a02a946dSIlya Dryomov /* unblock it anyway... */ 4448a02a946dSIlya Dryomov } 4449a02a946dSIlya Dryomov 4450a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &backoff->spgid); 4451a02a946dSIlya Dryomov BUG_ON(!spg); 4452a02a946dSIlya Dryomov 4453a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 4454a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4455a02a946dSIlya Dryomov free_backoff(backoff); 4456a02a946dSIlya Dryomov 4457a02a946dSIlya Dryomov if (RB_EMPTY_ROOT(&spg->backoffs)) { 4458a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 4459a02a946dSIlya Dryomov free_spg_mapping(spg); 4460a02a946dSIlya Dryomov } 4461a02a946dSIlya Dryomov 4462a02a946dSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 4463a02a946dSIlya Dryomov struct ceph_osd_request *req = 4464a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 4465a02a946dSIlya Dryomov 4466a02a946dSIlya Dryomov if (!ceph_spg_compare(&req->r_t.spgid, &m->spgid)) { 4467a02a946dSIlya Dryomov /* 4468a02a946dSIlya Dryomov * Match against @m, not @backoff -- the PG may 4469a02a946dSIlya Dryomov * have split on the OSD. 4470a02a946dSIlya Dryomov */ 4471a02a946dSIlya Dryomov if (target_contained_by(&req->r_t, m->begin, m->end)) { 4472a02a946dSIlya Dryomov /* 4473a02a946dSIlya Dryomov * If no other installed backoff applies, 4474a02a946dSIlya Dryomov * resend. 4475a02a946dSIlya Dryomov */ 4476a02a946dSIlya Dryomov send_request(req); 4477a02a946dSIlya Dryomov } 4478a02a946dSIlya Dryomov } 4479a02a946dSIlya Dryomov } 4480a02a946dSIlya Dryomov } 4481a02a946dSIlya Dryomov 4482a02a946dSIlya Dryomov static void handle_backoff(struct ceph_osd *osd, struct ceph_msg *msg) 4483a02a946dSIlya Dryomov { 4484a02a946dSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 4485a02a946dSIlya Dryomov struct MOSDBackoff m; 4486a02a946dSIlya Dryomov int ret; 4487a02a946dSIlya Dryomov 4488a02a946dSIlya Dryomov down_read(&osdc->lock); 4489a02a946dSIlya Dryomov if (!osd_registered(osd)) { 4490a02a946dSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 4491a02a946dSIlya Dryomov up_read(&osdc->lock); 4492a02a946dSIlya Dryomov return; 4493a02a946dSIlya Dryomov } 4494a02a946dSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 4495a02a946dSIlya Dryomov 4496a02a946dSIlya Dryomov mutex_lock(&osd->lock); 4497a02a946dSIlya Dryomov ret = decode_MOSDBackoff(msg, &m); 4498a02a946dSIlya Dryomov if (ret) { 4499a02a946dSIlya Dryomov pr_err("failed to decode MOSDBackoff: %d\n", ret); 4500a02a946dSIlya Dryomov ceph_msg_dump(msg); 4501a02a946dSIlya Dryomov goto out_unlock; 4502a02a946dSIlya Dryomov } 4503a02a946dSIlya Dryomov 4504a02a946dSIlya Dryomov switch (m.op) { 4505a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_BLOCK: 4506a02a946dSIlya Dryomov handle_backoff_block(osd, &m); 4507a02a946dSIlya Dryomov break; 4508a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_UNBLOCK: 4509a02a946dSIlya Dryomov handle_backoff_unblock(osd, &m); 4510a02a946dSIlya Dryomov break; 4511a02a946dSIlya Dryomov default: 4512a02a946dSIlya Dryomov pr_err("%s osd%d unknown op %d\n", __func__, osd->o_osd, m.op); 4513a02a946dSIlya Dryomov } 4514a02a946dSIlya Dryomov 4515a02a946dSIlya Dryomov free_hoid(m.begin); 4516a02a946dSIlya Dryomov free_hoid(m.end); 4517a02a946dSIlya Dryomov 4518a02a946dSIlya Dryomov out_unlock: 4519a02a946dSIlya Dryomov mutex_unlock(&osd->lock); 4520a02a946dSIlya Dryomov up_read(&osdc->lock); 4521a02a946dSIlya Dryomov } 4522a02a946dSIlya Dryomov 45233d14c5d2SYehuda Sadeh /* 4524a40c4f10SYehuda Sadeh * Process osd watch notifications 4525a40c4f10SYehuda Sadeh */ 45263c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 45273c663bbdSAlex Elder struct ceph_msg *msg) 4528a40c4f10SYehuda Sadeh { 4529922dab61SIlya Dryomov void *p = msg->front.iov_base; 4530922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 4531922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4532922dab61SIlya Dryomov struct linger_work *lwork; 4533922dab61SIlya Dryomov u8 proto_ver, opcode; 4534922dab61SIlya Dryomov u64 cookie, notify_id; 4535922dab61SIlya Dryomov u64 notifier_id = 0; 453619079203SIlya Dryomov s32 return_code = 0; 4537922dab61SIlya Dryomov void *payload = NULL; 4538922dab61SIlya Dryomov u32 payload_len = 0; 4539a40c4f10SYehuda Sadeh 4540a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 4541a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 4542a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 4543922dab61SIlya Dryomov p += 8; /* skip ver */ 4544a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 4545a40c4f10SYehuda Sadeh 4546922dab61SIlya Dryomov if (proto_ver >= 1) { 4547922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 4548922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 4549922dab61SIlya Dryomov payload = p; 4550922dab61SIlya Dryomov p += payload_len; 4551a40c4f10SYehuda Sadeh } 4552a40c4f10SYehuda Sadeh 4553922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 455419079203SIlya Dryomov ceph_decode_32_safe(&p, end, return_code, bad); 4555922dab61SIlya Dryomov 4556922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 4557922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 4558922dab61SIlya Dryomov 4559922dab61SIlya Dryomov down_read(&osdc->lock); 4560922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 4561922dab61SIlya Dryomov if (!lreq) { 4562922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 4563922dab61SIlya Dryomov cookie); 4564922dab61SIlya Dryomov goto out_unlock_osdc; 4565922dab61SIlya Dryomov } 4566922dab61SIlya Dryomov 4567922dab61SIlya Dryomov mutex_lock(&lreq->lock); 456819079203SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, 456919079203SIlya Dryomov opcode, cookie, lreq, lreq->is_watch); 4570922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 4571922dab61SIlya Dryomov if (!lreq->last_error) { 4572922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 4573922dab61SIlya Dryomov queue_watch_error(lreq); 4574922dab61SIlya Dryomov } 457519079203SIlya Dryomov } else if (!lreq->is_watch) { 457619079203SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ 457719079203SIlya Dryomov if (lreq->notify_id && lreq->notify_id != notify_id) { 457819079203SIlya Dryomov dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, 457919079203SIlya Dryomov lreq->notify_id, notify_id); 458019079203SIlya Dryomov } else if (!completion_done(&lreq->notify_finish_wait)) { 458119079203SIlya Dryomov struct ceph_msg_data *data = 45820d9c1ab3SIlya Dryomov msg->num_data_items ? &msg->data[0] : NULL; 458319079203SIlya Dryomov 458419079203SIlya Dryomov if (data) { 458519079203SIlya Dryomov if (lreq->preply_pages) { 458619079203SIlya Dryomov WARN_ON(data->type != 458719079203SIlya Dryomov CEPH_MSG_DATA_PAGES); 458819079203SIlya Dryomov *lreq->preply_pages = data->pages; 458919079203SIlya Dryomov *lreq->preply_len = data->length; 4590e8862740SIlya Dryomov data->own_pages = false; 459119079203SIlya Dryomov } 459219079203SIlya Dryomov } 459319079203SIlya Dryomov lreq->notify_finish_error = return_code; 459419079203SIlya Dryomov complete_all(&lreq->notify_finish_wait); 459519079203SIlya Dryomov } 4596922dab61SIlya Dryomov } else { 4597922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 4598922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 4599922dab61SIlya Dryomov if (!lwork) { 4600922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 4601922dab61SIlya Dryomov goto out_unlock_lreq; 4602922dab61SIlya Dryomov } 4603922dab61SIlya Dryomov 4604922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 4605922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 4606922dab61SIlya Dryomov lwork->notify.payload = payload; 4607922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 4608922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 4609922dab61SIlya Dryomov lwork_queue(lwork); 4610922dab61SIlya Dryomov } 4611922dab61SIlya Dryomov 4612922dab61SIlya Dryomov out_unlock_lreq: 4613922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 4614922dab61SIlya Dryomov out_unlock_osdc: 4615922dab61SIlya Dryomov up_read(&osdc->lock); 4616a40c4f10SYehuda Sadeh return; 4617a40c4f10SYehuda Sadeh 4618a40c4f10SYehuda Sadeh bad: 4619a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 4620a40c4f10SYehuda Sadeh } 4621a40c4f10SYehuda Sadeh 4622a40c4f10SYehuda Sadeh /* 46233d14c5d2SYehuda Sadeh * Register request, send initial attempt. 46243d14c5d2SYehuda Sadeh */ 4625a8af0d68SJeff Layton void ceph_osdc_start_request(struct ceph_osd_client *osdc, 4626a8af0d68SJeff Layton struct ceph_osd_request *req) 46273d14c5d2SYehuda Sadeh { 46285aea3dcdSIlya Dryomov down_read(&osdc->lock); 46295aea3dcdSIlya Dryomov submit_request(req, false); 46305aea3dcdSIlya Dryomov up_read(&osdc->lock); 46313d14c5d2SYehuda Sadeh } 46323d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 46333d14c5d2SYehuda Sadeh 46343d14c5d2SYehuda Sadeh /* 4635d0bb883cSIlya Dryomov * Unregister request. If @req was registered, it isn't completed: 4636d0bb883cSIlya Dryomov * r_result isn't set and __complete_request() isn't invoked. 4637d0bb883cSIlya Dryomov * 4638d0bb883cSIlya Dryomov * If @req wasn't registered, this call may have raced with 4639d0bb883cSIlya Dryomov * handle_reply(), in which case r_result would already be set and 4640d0bb883cSIlya Dryomov * __complete_request() would be getting invoked, possibly even 4641d0bb883cSIlya Dryomov * concurrently with this call. 4642c9f9b93dSIlya Dryomov */ 4643c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 4644c9f9b93dSIlya Dryomov { 4645c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 4646c9f9b93dSIlya Dryomov 46475aea3dcdSIlya Dryomov down_write(&osdc->lock); 46485aea3dcdSIlya Dryomov if (req->r_osd) 46495aea3dcdSIlya Dryomov cancel_request(req); 46505aea3dcdSIlya Dryomov up_write(&osdc->lock); 4651c9f9b93dSIlya Dryomov } 4652c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 4653c9f9b93dSIlya Dryomov 4654c9f9b93dSIlya Dryomov /* 465542b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 465642b06965SIlya Dryomov */ 465742b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 465842b06965SIlya Dryomov unsigned long timeout) 465942b06965SIlya Dryomov { 466042b06965SIlya Dryomov long left; 466142b06965SIlya Dryomov 466242b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 46630e76abf2SYan, Zheng left = wait_for_completion_killable_timeout(&req->r_completion, 466442b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 466542b06965SIlya Dryomov if (left <= 0) { 466642b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 466742b06965SIlya Dryomov ceph_osdc_cancel_request(req); 466842b06965SIlya Dryomov } else { 466942b06965SIlya Dryomov left = req->r_result; /* completed */ 467042b06965SIlya Dryomov } 467142b06965SIlya Dryomov 467242b06965SIlya Dryomov return left; 467342b06965SIlya Dryomov } 467442b06965SIlya Dryomov 467542b06965SIlya Dryomov /* 46763d14c5d2SYehuda Sadeh * wait for a request to complete 46773d14c5d2SYehuda Sadeh */ 46783d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 46793d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 46803d14c5d2SYehuda Sadeh { 468142b06965SIlya Dryomov return wait_request_timeout(req, 0); 46823d14c5d2SYehuda Sadeh } 46833d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 46843d14c5d2SYehuda Sadeh 46853d14c5d2SYehuda Sadeh /* 46863d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 46873d14c5d2SYehuda Sadeh */ 46883d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 46893d14c5d2SYehuda Sadeh { 46905aea3dcdSIlya Dryomov struct rb_node *n, *p; 46915aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 46923d14c5d2SYehuda Sadeh 46935aea3dcdSIlya Dryomov again: 46945aea3dcdSIlya Dryomov down_read(&osdc->lock); 46955aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 46965aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 46975aea3dcdSIlya Dryomov 46985aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 46995aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 47005aea3dcdSIlya Dryomov struct ceph_osd_request *req = 47015aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 47025aea3dcdSIlya Dryomov 47033d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 47043d14c5d2SYehuda Sadeh break; 47053d14c5d2SYehuda Sadeh 47065aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 47073d14c5d2SYehuda Sadeh continue; 47083d14c5d2SYehuda Sadeh 47093d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 47105aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 47115aea3dcdSIlya Dryomov up_read(&osdc->lock); 47125aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 47135aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 4714b18b9550SIlya Dryomov wait_for_completion(&req->r_completion); 47153d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 47165aea3dcdSIlya Dryomov goto again; 47173d14c5d2SYehuda Sadeh } 47185aea3dcdSIlya Dryomov 47195aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 47205aea3dcdSIlya Dryomov } 47215aea3dcdSIlya Dryomov 47225aea3dcdSIlya Dryomov up_read(&osdc->lock); 47235aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 47243d14c5d2SYehuda Sadeh } 47253d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 47263d14c5d2SYehuda Sadeh 4727922dab61SIlya Dryomov /* 4728922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 4729922dab61SIlya Dryomov */ 4730922dab61SIlya Dryomov struct ceph_osd_linger_request * 4731922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 4732922dab61SIlya Dryomov struct ceph_object_id *oid, 4733922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4734922dab61SIlya Dryomov rados_watchcb2_t wcb, 4735922dab61SIlya Dryomov rados_watcherrcb_t errcb, 4736922dab61SIlya Dryomov void *data) 4737922dab61SIlya Dryomov { 4738922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4739922dab61SIlya Dryomov int ret; 4740922dab61SIlya Dryomov 4741922dab61SIlya Dryomov lreq = linger_alloc(osdc); 4742922dab61SIlya Dryomov if (!lreq) 4743922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 4744922dab61SIlya Dryomov 474519079203SIlya Dryomov lreq->is_watch = true; 4746922dab61SIlya Dryomov lreq->wcb = wcb; 4747922dab61SIlya Dryomov lreq->errcb = errcb; 4748922dab61SIlya Dryomov lreq->data = data; 4749b07d3c4bSIlya Dryomov lreq->watch_valid_thru = jiffies; 4750922dab61SIlya Dryomov 4751922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 4752922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 475354ea0046SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE; 4754fac02ddfSArnd Bergmann ktime_get_real_ts64(&lreq->mtime); 4755922dab61SIlya Dryomov 475681c65213SIlya Dryomov linger_submit(lreq); 4757922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 4758922dab61SIlya Dryomov if (ret) { 4759922dab61SIlya Dryomov linger_cancel(lreq); 4760922dab61SIlya Dryomov goto err_put_lreq; 4761922dab61SIlya Dryomov } 4762922dab61SIlya Dryomov 4763922dab61SIlya Dryomov return lreq; 4764922dab61SIlya Dryomov 4765922dab61SIlya Dryomov err_put_lreq: 4766922dab61SIlya Dryomov linger_put(lreq); 4767922dab61SIlya Dryomov return ERR_PTR(ret); 4768922dab61SIlya Dryomov } 4769922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 4770922dab61SIlya Dryomov 4771922dab61SIlya Dryomov /* 4772922dab61SIlya Dryomov * Releases a ref. 4773922dab61SIlya Dryomov * 4774922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 4775922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 4776922dab61SIlya Dryomov * with mount_timeout"). 4777922dab61SIlya Dryomov */ 4778922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 4779922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 4780922dab61SIlya Dryomov { 4781922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 4782922dab61SIlya Dryomov struct ceph_osd_request *req; 4783922dab61SIlya Dryomov int ret; 4784922dab61SIlya Dryomov 4785922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4786922dab61SIlya Dryomov if (!req) 4787922dab61SIlya Dryomov return -ENOMEM; 4788922dab61SIlya Dryomov 4789922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4790922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 479154ea0046SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE; 4792fac02ddfSArnd Bergmann ktime_get_real_ts64(&req->r_mtime); 479375dbb685SIlya Dryomov osd_req_op_watch_init(req, 0, CEPH_OSD_WATCH_OP_UNWATCH, 479475dbb685SIlya Dryomov lreq->linger_id, 0); 4795922dab61SIlya Dryomov 4796922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4797922dab61SIlya Dryomov if (ret) 4798922dab61SIlya Dryomov goto out_put_req; 4799922dab61SIlya Dryomov 4800a8af0d68SJeff Layton ceph_osdc_start_request(osdc, req); 4801922dab61SIlya Dryomov linger_cancel(lreq); 4802922dab61SIlya Dryomov linger_put(lreq); 4803922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 4804922dab61SIlya Dryomov 4805922dab61SIlya Dryomov out_put_req: 4806922dab61SIlya Dryomov ceph_osdc_put_request(req); 4807922dab61SIlya Dryomov return ret; 4808922dab61SIlya Dryomov } 4809922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 4810922dab61SIlya Dryomov 4811922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 4812922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 48136d54228fSIlya Dryomov u32 payload_len) 4814922dab61SIlya Dryomov { 4815922dab61SIlya Dryomov struct ceph_osd_req_op *op; 4816922dab61SIlya Dryomov struct ceph_pagelist *pl; 4817922dab61SIlya Dryomov int ret; 4818922dab61SIlya Dryomov 4819042f6498SJeff Layton op = osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 4820922dab61SIlya Dryomov 482133165d47SIlya Dryomov pl = ceph_pagelist_alloc(GFP_NOIO); 4822922dab61SIlya Dryomov if (!pl) 4823922dab61SIlya Dryomov return -ENOMEM; 4824922dab61SIlya Dryomov 4825922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 4826922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 4827922dab61SIlya Dryomov if (payload) { 4828922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 4829922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 4830922dab61SIlya Dryomov } else { 4831922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 4832922dab61SIlya Dryomov } 4833922dab61SIlya Dryomov if (ret) { 4834922dab61SIlya Dryomov ceph_pagelist_release(pl); 4835922dab61SIlya Dryomov return -ENOMEM; 4836922dab61SIlya Dryomov } 4837922dab61SIlya Dryomov 4838922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 4839922dab61SIlya Dryomov op->indata_len = pl->length; 4840922dab61SIlya Dryomov return 0; 4841922dab61SIlya Dryomov } 4842922dab61SIlya Dryomov 4843922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 4844922dab61SIlya Dryomov struct ceph_object_id *oid, 4845922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4846922dab61SIlya Dryomov u64 notify_id, 4847922dab61SIlya Dryomov u64 cookie, 4848922dab61SIlya Dryomov void *payload, 48496d54228fSIlya Dryomov u32 payload_len) 4850922dab61SIlya Dryomov { 4851922dab61SIlya Dryomov struct ceph_osd_request *req; 4852922dab61SIlya Dryomov int ret; 4853922dab61SIlya Dryomov 4854922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4855922dab61SIlya Dryomov if (!req) 4856922dab61SIlya Dryomov return -ENOMEM; 4857922dab61SIlya Dryomov 4858922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 4859922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 4860922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 4861922dab61SIlya Dryomov 486226f887e0SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 486326f887e0SIlya Dryomov payload_len); 4864922dab61SIlya Dryomov if (ret) 4865922dab61SIlya Dryomov goto out_put_req; 4866922dab61SIlya Dryomov 486726f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4868922dab61SIlya Dryomov if (ret) 4869922dab61SIlya Dryomov goto out_put_req; 4870922dab61SIlya Dryomov 4871a8af0d68SJeff Layton ceph_osdc_start_request(osdc, req); 4872922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 4873922dab61SIlya Dryomov 4874922dab61SIlya Dryomov out_put_req: 4875922dab61SIlya Dryomov ceph_osdc_put_request(req); 4876922dab61SIlya Dryomov return ret; 4877922dab61SIlya Dryomov } 4878922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 4879922dab61SIlya Dryomov 488019079203SIlya Dryomov /* 488119079203SIlya Dryomov * @timeout: in seconds 488219079203SIlya Dryomov * 488319079203SIlya Dryomov * @preply_{pages,len} are initialized both on success and error. 488419079203SIlya Dryomov * The caller is responsible for: 488519079203SIlya Dryomov * 488619079203SIlya Dryomov * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) 488719079203SIlya Dryomov */ 488819079203SIlya Dryomov int ceph_osdc_notify(struct ceph_osd_client *osdc, 488919079203SIlya Dryomov struct ceph_object_id *oid, 489019079203SIlya Dryomov struct ceph_object_locator *oloc, 489119079203SIlya Dryomov void *payload, 48926d54228fSIlya Dryomov u32 payload_len, 489319079203SIlya Dryomov u32 timeout, 489419079203SIlya Dryomov struct page ***preply_pages, 489519079203SIlya Dryomov size_t *preply_len) 489619079203SIlya Dryomov { 489719079203SIlya Dryomov struct ceph_osd_linger_request *lreq; 489819079203SIlya Dryomov int ret; 489919079203SIlya Dryomov 490019079203SIlya Dryomov WARN_ON(!timeout); 490119079203SIlya Dryomov if (preply_pages) { 490219079203SIlya Dryomov *preply_pages = NULL; 490319079203SIlya Dryomov *preply_len = 0; 490419079203SIlya Dryomov } 490519079203SIlya Dryomov 490619079203SIlya Dryomov lreq = linger_alloc(osdc); 490719079203SIlya Dryomov if (!lreq) 490819079203SIlya Dryomov return -ENOMEM; 490919079203SIlya Dryomov 491075dbb685SIlya Dryomov lreq->request_pl = ceph_pagelist_alloc(GFP_NOIO); 491175dbb685SIlya Dryomov if (!lreq->request_pl) { 491275dbb685SIlya Dryomov ret = -ENOMEM; 491375dbb685SIlya Dryomov goto out_put_lreq; 491475dbb685SIlya Dryomov } 491575dbb685SIlya Dryomov 491675dbb685SIlya Dryomov ret = ceph_pagelist_encode_32(lreq->request_pl, 1); /* prot_ver */ 491775dbb685SIlya Dryomov ret |= ceph_pagelist_encode_32(lreq->request_pl, timeout); 491875dbb685SIlya Dryomov ret |= ceph_pagelist_encode_32(lreq->request_pl, payload_len); 491975dbb685SIlya Dryomov ret |= ceph_pagelist_append(lreq->request_pl, payload, payload_len); 492075dbb685SIlya Dryomov if (ret) { 492175dbb685SIlya Dryomov ret = -ENOMEM; 492275dbb685SIlya Dryomov goto out_put_lreq; 492375dbb685SIlya Dryomov } 492475dbb685SIlya Dryomov 492575dbb685SIlya Dryomov /* for notify_id */ 492675dbb685SIlya Dryomov lreq->notify_id_pages = ceph_alloc_page_vector(1, GFP_NOIO); 492775dbb685SIlya Dryomov if (IS_ERR(lreq->notify_id_pages)) { 492875dbb685SIlya Dryomov ret = PTR_ERR(lreq->notify_id_pages); 492975dbb685SIlya Dryomov lreq->notify_id_pages = NULL; 493075dbb685SIlya Dryomov goto out_put_lreq; 493175dbb685SIlya Dryomov } 493275dbb685SIlya Dryomov 493319079203SIlya Dryomov lreq->preply_pages = preply_pages; 493419079203SIlya Dryomov lreq->preply_len = preply_len; 493519079203SIlya Dryomov 493619079203SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 493719079203SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 493819079203SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_READ; 493919079203SIlya Dryomov 494081c65213SIlya Dryomov linger_submit(lreq); 494119079203SIlya Dryomov ret = linger_reg_commit_wait(lreq); 494219079203SIlya Dryomov if (!ret) 4943e6e28432SIlya Dryomov ret = linger_notify_finish_wait(lreq, 4944e6e28432SIlya Dryomov msecs_to_jiffies(2 * timeout * MSEC_PER_SEC)); 494519079203SIlya Dryomov else 494619079203SIlya Dryomov dout("lreq %p failed to initiate notify %d\n", lreq, ret); 494719079203SIlya Dryomov 494819079203SIlya Dryomov linger_cancel(lreq); 494919079203SIlya Dryomov out_put_lreq: 495019079203SIlya Dryomov linger_put(lreq); 495119079203SIlya Dryomov return ret; 495219079203SIlya Dryomov } 495319079203SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify); 495419079203SIlya Dryomov 49553d14c5d2SYehuda Sadeh /* 4956b07d3c4bSIlya Dryomov * Return the number of milliseconds since the watch was last 4957b07d3c4bSIlya Dryomov * confirmed, or an error. If there is an error, the watch is no 4958b07d3c4bSIlya Dryomov * longer valid, and should be destroyed with ceph_osdc_unwatch(). 4959b07d3c4bSIlya Dryomov */ 4960b07d3c4bSIlya Dryomov int ceph_osdc_watch_check(struct ceph_osd_client *osdc, 4961b07d3c4bSIlya Dryomov struct ceph_osd_linger_request *lreq) 4962b07d3c4bSIlya Dryomov { 4963b07d3c4bSIlya Dryomov unsigned long stamp, age; 4964b07d3c4bSIlya Dryomov int ret; 4965b07d3c4bSIlya Dryomov 4966b07d3c4bSIlya Dryomov down_read(&osdc->lock); 4967b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 4968b07d3c4bSIlya Dryomov stamp = lreq->watch_valid_thru; 4969b07d3c4bSIlya Dryomov if (!list_empty(&lreq->pending_lworks)) { 4970b07d3c4bSIlya Dryomov struct linger_work *lwork = 4971b07d3c4bSIlya Dryomov list_first_entry(&lreq->pending_lworks, 4972b07d3c4bSIlya Dryomov struct linger_work, 4973b07d3c4bSIlya Dryomov pending_item); 4974b07d3c4bSIlya Dryomov 4975b07d3c4bSIlya Dryomov if (time_before(lwork->queued_stamp, stamp)) 4976b07d3c4bSIlya Dryomov stamp = lwork->queued_stamp; 4977b07d3c4bSIlya Dryomov } 4978b07d3c4bSIlya Dryomov age = jiffies - stamp; 4979b07d3c4bSIlya Dryomov dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, 4980b07d3c4bSIlya Dryomov lreq, lreq->linger_id, age, lreq->last_error); 4981b07d3c4bSIlya Dryomov /* we are truncating to msecs, so return a safe upper bound */ 4982b07d3c4bSIlya Dryomov ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); 4983b07d3c4bSIlya Dryomov 4984b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 4985b07d3c4bSIlya Dryomov up_read(&osdc->lock); 4986b07d3c4bSIlya Dryomov return ret; 4987b07d3c4bSIlya Dryomov } 4988b07d3c4bSIlya Dryomov 4989a4ed38d7SDouglas Fuller static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) 4990a4ed38d7SDouglas Fuller { 4991a4ed38d7SDouglas Fuller u8 struct_v; 4992a4ed38d7SDouglas Fuller u32 struct_len; 4993a4ed38d7SDouglas Fuller int ret; 4994a4ed38d7SDouglas Fuller 4995a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 2, "watch_item_t", 4996a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4997a4ed38d7SDouglas Fuller if (ret) 499851fc7ab4SJeff Layton goto bad; 4999a4ed38d7SDouglas Fuller 500051fc7ab4SJeff Layton ret = -EINVAL; 500151fc7ab4SJeff Layton ceph_decode_copy_safe(p, end, &item->name, sizeof(item->name), bad); 500251fc7ab4SJeff Layton ceph_decode_64_safe(p, end, item->cookie, bad); 500351fc7ab4SJeff Layton ceph_decode_skip_32(p, end, bad); /* skip timeout seconds */ 500451fc7ab4SJeff Layton 5005a4ed38d7SDouglas Fuller if (struct_v >= 2) { 500651fc7ab4SJeff Layton ret = ceph_decode_entity_addr(p, end, &item->addr); 500751fc7ab4SJeff Layton if (ret) 500851fc7ab4SJeff Layton goto bad; 500951fc7ab4SJeff Layton } else { 501051fc7ab4SJeff Layton ret = 0; 5011a4ed38d7SDouglas Fuller } 5012a4ed38d7SDouglas Fuller 5013a4ed38d7SDouglas Fuller dout("%s %s%llu cookie %llu addr %s\n", __func__, 5014a4ed38d7SDouglas Fuller ENTITY_NAME(item->name), item->cookie, 5015b726ec97SJeff Layton ceph_pr_addr(&item->addr)); 501651fc7ab4SJeff Layton bad: 501751fc7ab4SJeff Layton return ret; 5018a4ed38d7SDouglas Fuller } 5019a4ed38d7SDouglas Fuller 5020a4ed38d7SDouglas Fuller static int decode_watchers(void **p, void *end, 5021a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 5022a4ed38d7SDouglas Fuller u32 *num_watchers) 5023a4ed38d7SDouglas Fuller { 5024a4ed38d7SDouglas Fuller u8 struct_v; 5025a4ed38d7SDouglas Fuller u32 struct_len; 5026a4ed38d7SDouglas Fuller int i; 5027a4ed38d7SDouglas Fuller int ret; 5028a4ed38d7SDouglas Fuller 5029a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t", 5030a4ed38d7SDouglas Fuller &struct_v, &struct_len); 5031a4ed38d7SDouglas Fuller if (ret) 5032a4ed38d7SDouglas Fuller return ret; 5033a4ed38d7SDouglas Fuller 5034a4ed38d7SDouglas Fuller *num_watchers = ceph_decode_32(p); 5035a4ed38d7SDouglas Fuller *watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO); 5036a4ed38d7SDouglas Fuller if (!*watchers) 5037a4ed38d7SDouglas Fuller return -ENOMEM; 5038a4ed38d7SDouglas Fuller 5039a4ed38d7SDouglas Fuller for (i = 0; i < *num_watchers; i++) { 5040a4ed38d7SDouglas Fuller ret = decode_watcher(p, end, *watchers + i); 5041a4ed38d7SDouglas Fuller if (ret) { 5042a4ed38d7SDouglas Fuller kfree(*watchers); 5043a4ed38d7SDouglas Fuller return ret; 5044a4ed38d7SDouglas Fuller } 5045a4ed38d7SDouglas Fuller } 5046a4ed38d7SDouglas Fuller 5047a4ed38d7SDouglas Fuller return 0; 5048a4ed38d7SDouglas Fuller } 5049a4ed38d7SDouglas Fuller 5050a4ed38d7SDouglas Fuller /* 5051a4ed38d7SDouglas Fuller * On success, the caller is responsible for: 5052a4ed38d7SDouglas Fuller * 5053a4ed38d7SDouglas Fuller * kfree(watchers); 5054a4ed38d7SDouglas Fuller */ 5055a4ed38d7SDouglas Fuller int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, 5056a4ed38d7SDouglas Fuller struct ceph_object_id *oid, 5057a4ed38d7SDouglas Fuller struct ceph_object_locator *oloc, 5058a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 5059a4ed38d7SDouglas Fuller u32 *num_watchers) 5060a4ed38d7SDouglas Fuller { 5061a4ed38d7SDouglas Fuller struct ceph_osd_request *req; 5062a4ed38d7SDouglas Fuller struct page **pages; 5063a4ed38d7SDouglas Fuller int ret; 5064a4ed38d7SDouglas Fuller 5065a4ed38d7SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 5066a4ed38d7SDouglas Fuller if (!req) 5067a4ed38d7SDouglas Fuller return -ENOMEM; 5068a4ed38d7SDouglas Fuller 5069a4ed38d7SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 5070a4ed38d7SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 5071a4ed38d7SDouglas Fuller req->r_flags = CEPH_OSD_FLAG_READ; 5072a4ed38d7SDouglas Fuller 5073a4ed38d7SDouglas Fuller pages = ceph_alloc_page_vector(1, GFP_NOIO); 5074a4ed38d7SDouglas Fuller if (IS_ERR(pages)) { 5075a4ed38d7SDouglas Fuller ret = PTR_ERR(pages); 5076a4ed38d7SDouglas Fuller goto out_put_req; 5077a4ed38d7SDouglas Fuller } 5078a4ed38d7SDouglas Fuller 5079a4ed38d7SDouglas Fuller osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0); 5080a4ed38d7SDouglas Fuller ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers, 5081a4ed38d7SDouglas Fuller response_data), 5082a4ed38d7SDouglas Fuller pages, PAGE_SIZE, 0, false, true); 5083a4ed38d7SDouglas Fuller 508426f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 508526f887e0SIlya Dryomov if (ret) 508626f887e0SIlya Dryomov goto out_put_req; 508726f887e0SIlya Dryomov 5088a8af0d68SJeff Layton ceph_osdc_start_request(osdc, req); 5089a4ed38d7SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 5090a4ed38d7SDouglas Fuller if (ret >= 0) { 5091a4ed38d7SDouglas Fuller void *p = page_address(pages[0]); 5092a4ed38d7SDouglas Fuller void *const end = p + req->r_ops[0].outdata_len; 5093a4ed38d7SDouglas Fuller 5094a4ed38d7SDouglas Fuller ret = decode_watchers(&p, end, watchers, num_watchers); 5095a4ed38d7SDouglas Fuller } 5096a4ed38d7SDouglas Fuller 5097a4ed38d7SDouglas Fuller out_put_req: 5098a4ed38d7SDouglas Fuller ceph_osdc_put_request(req); 5099a4ed38d7SDouglas Fuller return ret; 5100a4ed38d7SDouglas Fuller } 5101a4ed38d7SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_list_watchers); 5102a4ed38d7SDouglas Fuller 5103b07d3c4bSIlya Dryomov /* 5104dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 5105dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 5106dd935f44SJosh Durgin */ 5107f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 5108dd935f44SJosh Durgin { 510999d16943SIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 5110dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 5111dd935f44SJosh Durgin } 5112dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 5113dd935f44SJosh Durgin 51147cca78c9SIlya Dryomov void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) 51157cca78c9SIlya Dryomov { 51167cca78c9SIlya Dryomov down_read(&osdc->lock); 51177cca78c9SIlya Dryomov maybe_request_map(osdc); 51187cca78c9SIlya Dryomov up_read(&osdc->lock); 51197cca78c9SIlya Dryomov } 51207cca78c9SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_maybe_request_map); 5121dd935f44SJosh Durgin 5122dd935f44SJosh Durgin /* 5123428a7158SDouglas Fuller * Execute an OSD class method on an object. 5124428a7158SDouglas Fuller * 5125428a7158SDouglas Fuller * @flags: CEPH_OSD_FLAG_* 51262544a020SIlya Dryomov * @resp_len: in/out param for reply length 5127428a7158SDouglas Fuller */ 5128428a7158SDouglas Fuller int ceph_osdc_call(struct ceph_osd_client *osdc, 5129428a7158SDouglas Fuller struct ceph_object_id *oid, 5130428a7158SDouglas Fuller struct ceph_object_locator *oloc, 5131428a7158SDouglas Fuller const char *class, const char *method, 5132428a7158SDouglas Fuller unsigned int flags, 5133428a7158SDouglas Fuller struct page *req_page, size_t req_len, 513468ada915SIlya Dryomov struct page **resp_pages, size_t *resp_len) 5135428a7158SDouglas Fuller { 5136428a7158SDouglas Fuller struct ceph_osd_request *req; 5137428a7158SDouglas Fuller int ret; 5138428a7158SDouglas Fuller 513968ada915SIlya Dryomov if (req_len > PAGE_SIZE) 51402544a020SIlya Dryomov return -E2BIG; 51412544a020SIlya Dryomov 5142428a7158SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 5143428a7158SDouglas Fuller if (!req) 5144428a7158SDouglas Fuller return -ENOMEM; 5145428a7158SDouglas Fuller 5146428a7158SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 5147428a7158SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 5148428a7158SDouglas Fuller req->r_flags = flags; 5149428a7158SDouglas Fuller 515024639ce5SIlya Dryomov ret = osd_req_op_cls_init(req, 0, class, method); 5151fe943d50SChengguang Xu if (ret) 5152fe943d50SChengguang Xu goto out_put_req; 5153fe943d50SChengguang Xu 5154428a7158SDouglas Fuller if (req_page) 5155428a7158SDouglas Fuller osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len, 5156428a7158SDouglas Fuller 0, false, false); 515768ada915SIlya Dryomov if (resp_pages) 515868ada915SIlya Dryomov osd_req_op_cls_response_data_pages(req, 0, resp_pages, 51592544a020SIlya Dryomov *resp_len, 0, false, false); 5160428a7158SDouglas Fuller 516126f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 516226f887e0SIlya Dryomov if (ret) 516326f887e0SIlya Dryomov goto out_put_req; 516426f887e0SIlya Dryomov 5165a8af0d68SJeff Layton ceph_osdc_start_request(osdc, req); 5166428a7158SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 5167428a7158SDouglas Fuller if (ret >= 0) { 5168428a7158SDouglas Fuller ret = req->r_ops[0].rval; 516968ada915SIlya Dryomov if (resp_pages) 5170428a7158SDouglas Fuller *resp_len = req->r_ops[0].outdata_len; 5171428a7158SDouglas Fuller } 5172428a7158SDouglas Fuller 5173428a7158SDouglas Fuller out_put_req: 5174428a7158SDouglas Fuller ceph_osdc_put_request(req); 5175428a7158SDouglas Fuller return ret; 5176428a7158SDouglas Fuller } 5177428a7158SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_call); 5178428a7158SDouglas Fuller 5179428a7158SDouglas Fuller /* 5180120a75eaSYan, Zheng * reset all osd connections 5181120a75eaSYan, Zheng */ 5182120a75eaSYan, Zheng void ceph_osdc_reopen_osds(struct ceph_osd_client *osdc) 5183120a75eaSYan, Zheng { 5184120a75eaSYan, Zheng struct rb_node *n; 5185120a75eaSYan, Zheng 5186120a75eaSYan, Zheng down_write(&osdc->lock); 5187120a75eaSYan, Zheng for (n = rb_first(&osdc->osds); n; ) { 5188120a75eaSYan, Zheng struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 5189120a75eaSYan, Zheng 5190120a75eaSYan, Zheng n = rb_next(n); 5191120a75eaSYan, Zheng if (!reopen_osd(osd)) 5192120a75eaSYan, Zheng kick_osd_requests(osd); 5193120a75eaSYan, Zheng } 5194120a75eaSYan, Zheng up_write(&osdc->lock); 5195120a75eaSYan, Zheng } 5196120a75eaSYan, Zheng 5197120a75eaSYan, Zheng /* 51983d14c5d2SYehuda Sadeh * init, shutdown 51993d14c5d2SYehuda Sadeh */ 52003d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 52013d14c5d2SYehuda Sadeh { 52023d14c5d2SYehuda Sadeh int err; 52033d14c5d2SYehuda Sadeh 52043d14c5d2SYehuda Sadeh dout("init\n"); 52053d14c5d2SYehuda Sadeh osdc->client = client; 52065aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 52073d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 52083d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 52099dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 52105aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 52115aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 52125aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 5213264048afSIlya Dryomov osdc->last_linger_id = CEPH_LINGER_ID_START; 5214922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 52154609245eSIlya Dryomov osdc->map_checks = RB_ROOT; 52164609245eSIlya Dryomov osdc->linger_map_checks = RB_ROOT; 52173d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 52183d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 52193d14c5d2SYehuda Sadeh 52203d14c5d2SYehuda Sadeh err = -ENOMEM; 5221e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 5222e5253a7bSIlya Dryomov if (!osdc->osdmap) 5223e5253a7bSIlya Dryomov goto out; 5224e5253a7bSIlya Dryomov 52259e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 52269e767adbSIlya Dryomov ceph_osd_request_cache); 52273d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 5228e5253a7bSIlya Dryomov goto out_map; 52293d14c5d2SYehuda Sadeh 5230d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 52310d9c1ab3SIlya Dryomov PAGE_SIZE, CEPH_OSD_SLAB_OPS, 10, "osd_op"); 52323d14c5d2SYehuda Sadeh if (err < 0) 52333d14c5d2SYehuda Sadeh goto out_mempool; 5234d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 52350d9c1ab3SIlya Dryomov PAGE_SIZE, CEPH_OSD_SLAB_OPS, 10, 52360d9c1ab3SIlya Dryomov "osd_op_reply"); 52373d14c5d2SYehuda Sadeh if (err < 0) 52383d14c5d2SYehuda Sadeh goto out_msgpool; 5239a40c4f10SYehuda Sadeh 5240dbcae088SDan Carpenter err = -ENOMEM; 5241a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 5242dbcae088SDan Carpenter if (!osdc->notify_wq) 5243c172ec5cSIlya Dryomov goto out_msgpool_reply; 5244c172ec5cSIlya Dryomov 524588bc1922SIlya Dryomov osdc->completion_wq = create_singlethread_workqueue("ceph-completion"); 524688bc1922SIlya Dryomov if (!osdc->completion_wq) 524788bc1922SIlya Dryomov goto out_notify_wq; 524888bc1922SIlya Dryomov 5249fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 5250fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 5251b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 5252b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 5253b37ee1b9SIlya Dryomov 52543d14c5d2SYehuda Sadeh return 0; 52553d14c5d2SYehuda Sadeh 525688bc1922SIlya Dryomov out_notify_wq: 525788bc1922SIlya Dryomov destroy_workqueue(osdc->notify_wq); 5258c172ec5cSIlya Dryomov out_msgpool_reply: 5259c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 52603d14c5d2SYehuda Sadeh out_msgpool: 52613d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 52623d14c5d2SYehuda Sadeh out_mempool: 52633d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 5264e5253a7bSIlya Dryomov out_map: 5265e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 52663d14c5d2SYehuda Sadeh out: 52673d14c5d2SYehuda Sadeh return err; 52683d14c5d2SYehuda Sadeh } 52693d14c5d2SYehuda Sadeh 52703d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 52713d14c5d2SYehuda Sadeh { 527288bc1922SIlya Dryomov destroy_workqueue(osdc->completion_wq); 5273a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 52743d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 52753d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 527642a2c09fSIlya Dryomov 52775aea3dcdSIlya Dryomov down_write(&osdc->lock); 527842a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 527942a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 528042a2c09fSIlya Dryomov struct ceph_osd, o_node); 52815aea3dcdSIlya Dryomov close_osd(osd); 528242a2c09fSIlya Dryomov } 52835aea3dcdSIlya Dryomov up_write(&osdc->lock); 528402113a0fSElena Reshetova WARN_ON(refcount_read(&osdc->homeless_osd.o_ref) != 1); 52855aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 52865aea3dcdSIlya Dryomov 52875aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 5288922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 52894609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); 52904609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); 52915aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 52925aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 529342a2c09fSIlya Dryomov 52943d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 52953d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 52963d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 52973d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 52983d14c5d2SYehuda Sadeh } 52993d14c5d2SYehuda Sadeh 5300aca39d9eSLuís Henriques int osd_req_op_copy_from_init(struct ceph_osd_request *req, 530123ddf9beSLuis Henriques u64 src_snapid, u64 src_version, 530223ddf9beSLuis Henriques struct ceph_object_id *src_oid, 530323ddf9beSLuis Henriques struct ceph_object_locator *src_oloc, 530423ddf9beSLuis Henriques u32 src_fadvise_flags, 530523ddf9beSLuis Henriques u32 dst_fadvise_flags, 530678beb0ffSLuis Henriques u32 truncate_seq, u64 truncate_size, 530723ddf9beSLuis Henriques u8 copy_from_flags) 530823ddf9beSLuis Henriques { 530923ddf9beSLuis Henriques struct ceph_osd_req_op *op; 531023ddf9beSLuis Henriques struct page **pages; 531123ddf9beSLuis Henriques void *p, *end; 531223ddf9beSLuis Henriques 531323ddf9beSLuis Henriques pages = ceph_alloc_page_vector(1, GFP_KERNEL); 531423ddf9beSLuis Henriques if (IS_ERR(pages)) 531523ddf9beSLuis Henriques return PTR_ERR(pages); 531623ddf9beSLuis Henriques 5317042f6498SJeff Layton op = osd_req_op_init(req, 0, CEPH_OSD_OP_COPY_FROM2, 531878beb0ffSLuis Henriques dst_fadvise_flags); 531923ddf9beSLuis Henriques op->copy_from.snapid = src_snapid; 532023ddf9beSLuis Henriques op->copy_from.src_version = src_version; 532123ddf9beSLuis Henriques op->copy_from.flags = copy_from_flags; 532223ddf9beSLuis Henriques op->copy_from.src_fadvise_flags = src_fadvise_flags; 532323ddf9beSLuis Henriques 532423ddf9beSLuis Henriques p = page_address(pages[0]); 532523ddf9beSLuis Henriques end = p + PAGE_SIZE; 532623ddf9beSLuis Henriques ceph_encode_string(&p, end, src_oid->name, src_oid->name_len); 532723ddf9beSLuis Henriques encode_oloc(&p, end, src_oloc); 532878beb0ffSLuis Henriques ceph_encode_32(&p, truncate_seq); 532978beb0ffSLuis Henriques ceph_encode_64(&p, truncate_size); 533023ddf9beSLuis Henriques op->indata_len = PAGE_SIZE - (end - p); 533123ddf9beSLuis Henriques 533223ddf9beSLuis Henriques ceph_osd_data_pages_init(&op->copy_from.osd_data, pages, 533323ddf9beSLuis Henriques op->indata_len, 0, false, true); 533423ddf9beSLuis Henriques return 0; 533523ddf9beSLuis Henriques } 5336aca39d9eSLuís Henriques EXPORT_SYMBOL(osd_req_op_copy_from_init); 533723ddf9beSLuis Henriques 533857a35dfbSChengguang Xu int __init ceph_osdc_setup(void) 53395522ae0bSAlex Elder { 53403f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 53413f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 53423f1af42aSIlya Dryomov 53435522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 53443f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 53453f1af42aSIlya Dryomov 0, 0, NULL); 53465522ae0bSAlex Elder 53475522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 53485522ae0bSAlex Elder } 53495522ae0bSAlex Elder 53505522ae0bSAlex Elder void ceph_osdc_cleanup(void) 53515522ae0bSAlex Elder { 53525522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 53535522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 53545522ae0bSAlex Elder ceph_osd_request_cache = NULL; 53555522ae0bSAlex Elder } 53565522ae0bSAlex Elder 53573d14c5d2SYehuda Sadeh /* 53583d14c5d2SYehuda Sadeh * handle incoming message 53593d14c5d2SYehuda Sadeh */ 53604972cf60SIlya Dryomov static void osd_dispatch(struct ceph_connection *con, struct ceph_msg *msg) 53613d14c5d2SYehuda Sadeh { 53623d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 53635aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 53643d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 53653d14c5d2SYehuda Sadeh 53663d14c5d2SYehuda Sadeh switch (type) { 53673d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 53683d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 53693d14c5d2SYehuda Sadeh break; 53703d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 53715aea3dcdSIlya Dryomov handle_reply(osd, msg); 53723d14c5d2SYehuda Sadeh break; 5373a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5374a02a946dSIlya Dryomov handle_backoff(osd, msg); 5375a02a946dSIlya Dryomov break; 5376a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 5377a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 5378a40c4f10SYehuda Sadeh break; 53793d14c5d2SYehuda Sadeh 53803d14c5d2SYehuda Sadeh default: 53813d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 53823d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 53833d14c5d2SYehuda Sadeh } 53845aea3dcdSIlya Dryomov 53853d14c5d2SYehuda Sadeh ceph_msg_put(msg); 53863d14c5d2SYehuda Sadeh } 53873d14c5d2SYehuda Sadeh 5388*f628d799SJeff Layton /* How much sparse data was requested? */ 5389*f628d799SJeff Layton static u64 sparse_data_requested(struct ceph_osd_request *req) 5390*f628d799SJeff Layton { 5391*f628d799SJeff Layton u64 len = 0; 5392*f628d799SJeff Layton 5393*f628d799SJeff Layton if (req->r_flags & CEPH_OSD_FLAG_READ) { 5394*f628d799SJeff Layton int i; 5395*f628d799SJeff Layton 5396*f628d799SJeff Layton for (i = 0; i < req->r_num_ops; ++i) { 5397*f628d799SJeff Layton struct ceph_osd_req_op *op = &req->r_ops[i]; 5398*f628d799SJeff Layton 5399*f628d799SJeff Layton if (op->op == CEPH_OSD_OP_SPARSE_READ) 5400*f628d799SJeff Layton len += op->extent.length; 5401*f628d799SJeff Layton } 5402*f628d799SJeff Layton } 5403*f628d799SJeff Layton return len; 5404*f628d799SJeff Layton } 5405*f628d799SJeff Layton 54063d14c5d2SYehuda Sadeh /* 5407d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 5408d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 5409d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 54103d14c5d2SYehuda Sadeh */ 54113d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 54123d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 54133d14c5d2SYehuda Sadeh int *skip) 54143d14c5d2SYehuda Sadeh { 54153d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 54163d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 54175aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 54183d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 54193f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 54203d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 54215aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 5422*f628d799SJeff Layton u64 srlen; 54233d14c5d2SYehuda Sadeh 54245aea3dcdSIlya Dryomov down_read(&osdc->lock); 54255aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 54265aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 54275aea3dcdSIlya Dryomov *skip = 1; 54285aea3dcdSIlya Dryomov goto out_unlock_osdc; 54295aea3dcdSIlya Dryomov } 54305aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 54315aea3dcdSIlya Dryomov 54325aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 54335aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 54343d14c5d2SYehuda Sadeh if (!req) { 5435cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 5436cd8140c6SIlya Dryomov osd->o_osd, tid); 5437d15f9d69SIlya Dryomov *skip = 1; 54385aea3dcdSIlya Dryomov goto out_unlock_session; 54393d14c5d2SYehuda Sadeh } 54403d14c5d2SYehuda Sadeh 54418921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 54423d14c5d2SYehuda Sadeh 5443f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 5444d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 5445d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 5446d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 54473f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 54483f0a4ac5SIlya Dryomov false); 54493d14c5d2SYehuda Sadeh if (!m) 54505aea3dcdSIlya Dryomov goto out_unlock_session; 54513d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 54523d14c5d2SYehuda Sadeh req->r_reply = m; 54533d14c5d2SYehuda Sadeh } 54543d14c5d2SYehuda Sadeh 5455*f628d799SJeff Layton srlen = sparse_data_requested(req); 5456*f628d799SJeff Layton if (!srlen && data_len > req->r_reply->data_length) { 5457d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 5458d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 5459d15f9d69SIlya Dryomov req->r_reply->data_length); 54603d14c5d2SYehuda Sadeh m = NULL; 5461d15f9d69SIlya Dryomov *skip = 1; 54625aea3dcdSIlya Dryomov goto out_unlock_session; 54633d14c5d2SYehuda Sadeh } 5464d15f9d69SIlya Dryomov 5465d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 5466*f628d799SJeff Layton m->sparse_read = (bool)srlen; 5467*f628d799SJeff Layton 54683d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 54693d14c5d2SYehuda Sadeh 54705aea3dcdSIlya Dryomov out_unlock_session: 54715aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 54725aea3dcdSIlya Dryomov out_unlock_osdc: 54735aea3dcdSIlya Dryomov up_read(&osdc->lock); 54743d14c5d2SYehuda Sadeh return m; 54753d14c5d2SYehuda Sadeh } 54763d14c5d2SYehuda Sadeh 547719079203SIlya Dryomov static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) 547819079203SIlya Dryomov { 547919079203SIlya Dryomov struct ceph_msg *m; 548019079203SIlya Dryomov int type = le16_to_cpu(hdr->type); 548119079203SIlya Dryomov u32 front_len = le32_to_cpu(hdr->front_len); 548219079203SIlya Dryomov u32 data_len = le32_to_cpu(hdr->data_len); 548319079203SIlya Dryomov 54840d9c1ab3SIlya Dryomov m = ceph_msg_new2(type, front_len, 1, GFP_NOIO, false); 548519079203SIlya Dryomov if (!m) 548619079203SIlya Dryomov return NULL; 548719079203SIlya Dryomov 548819079203SIlya Dryomov if (data_len) { 548919079203SIlya Dryomov struct page **pages; 549019079203SIlya Dryomov 549119079203SIlya Dryomov pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), 549219079203SIlya Dryomov GFP_NOIO); 5493c22e853aSWei Yongjun if (IS_ERR(pages)) { 549419079203SIlya Dryomov ceph_msg_put(m); 549519079203SIlya Dryomov return NULL; 549619079203SIlya Dryomov } 549719079203SIlya Dryomov 5498e8862740SIlya Dryomov ceph_msg_data_add_pages(m, pages, data_len, 0, true); 549919079203SIlya Dryomov } 550019079203SIlya Dryomov 550119079203SIlya Dryomov return m; 550219079203SIlya Dryomov } 550319079203SIlya Dryomov 55044972cf60SIlya Dryomov static struct ceph_msg *osd_alloc_msg(struct ceph_connection *con, 55053d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 55063d14c5d2SYehuda Sadeh int *skip) 55073d14c5d2SYehuda Sadeh { 55083d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 55093d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 55103d14c5d2SYehuda Sadeh 55111c20f2d2SAlex Elder *skip = 0; 55123d14c5d2SYehuda Sadeh switch (type) { 55133d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 5514a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5515a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 551619079203SIlya Dryomov return alloc_msg_with_page_vector(hdr); 55173d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 55183d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 55193d14c5d2SYehuda Sadeh default: 55205aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 55215aea3dcdSIlya Dryomov osd->o_osd, type); 55223d14c5d2SYehuda Sadeh *skip = 1; 55233d14c5d2SYehuda Sadeh return NULL; 55243d14c5d2SYehuda Sadeh } 55253d14c5d2SYehuda Sadeh } 55263d14c5d2SYehuda Sadeh 55273d14c5d2SYehuda Sadeh /* 55283d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 55293d14c5d2SYehuda Sadeh */ 55304972cf60SIlya Dryomov static struct ceph_connection *osd_get_con(struct ceph_connection *con) 55313d14c5d2SYehuda Sadeh { 55323d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 55333d14c5d2SYehuda Sadeh if (get_osd(osd)) 55343d14c5d2SYehuda Sadeh return con; 55353d14c5d2SYehuda Sadeh return NULL; 55363d14c5d2SYehuda Sadeh } 55373d14c5d2SYehuda Sadeh 55384972cf60SIlya Dryomov static void osd_put_con(struct ceph_connection *con) 55393d14c5d2SYehuda Sadeh { 55403d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 55413d14c5d2SYehuda Sadeh put_osd(osd); 55423d14c5d2SYehuda Sadeh } 55433d14c5d2SYehuda Sadeh 55443d14c5d2SYehuda Sadeh /* 55453d14c5d2SYehuda Sadeh * authentication 55463d14c5d2SYehuda Sadeh */ 5547cd1a677cSIlya Dryomov 5548a3530df3SAlex Elder /* 5549a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 5550a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 5551a3530df3SAlex Elder */ 55524972cf60SIlya Dryomov static struct ceph_auth_handshake * 55534972cf60SIlya Dryomov osd_get_authorizer(struct ceph_connection *con, int *proto, int force_new) 55543d14c5d2SYehuda Sadeh { 55553d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 55563d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 55573d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 555874f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 5559ce287162SIlya Dryomov int ret; 55603d14c5d2SYehuda Sadeh 5561ce287162SIlya Dryomov ret = __ceph_auth_get_authorizer(ac, auth, CEPH_ENTITY_TYPE_OSD, 5562ce287162SIlya Dryomov force_new, proto, NULL, NULL); 55633d14c5d2SYehuda Sadeh if (ret) 5564a3530df3SAlex Elder return ERR_PTR(ret); 556574f1869fSAlex Elder 5566a3530df3SAlex Elder return auth; 55673d14c5d2SYehuda Sadeh } 55683d14c5d2SYehuda Sadeh 55694972cf60SIlya Dryomov static int osd_add_authorizer_challenge(struct ceph_connection *con, 55706daca13dSIlya Dryomov void *challenge_buf, int challenge_buf_len) 55716daca13dSIlya Dryomov { 55726daca13dSIlya Dryomov struct ceph_osd *o = con->private; 55736daca13dSIlya Dryomov struct ceph_osd_client *osdc = o->o_osdc; 55746daca13dSIlya Dryomov struct ceph_auth_client *ac = osdc->client->monc.auth; 55756daca13dSIlya Dryomov 55766daca13dSIlya Dryomov return ceph_auth_add_authorizer_challenge(ac, o->o_auth.authorizer, 55776daca13dSIlya Dryomov challenge_buf, challenge_buf_len); 55786daca13dSIlya Dryomov } 55793d14c5d2SYehuda Sadeh 55804972cf60SIlya Dryomov static int osd_verify_authorizer_reply(struct ceph_connection *con) 55813d14c5d2SYehuda Sadeh { 55823d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 55833d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 55843d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 5585285ea34fSIlya Dryomov struct ceph_auth_handshake *auth = &o->o_auth; 55863d14c5d2SYehuda Sadeh 5587285ea34fSIlya Dryomov return ceph_auth_verify_authorizer_reply(ac, auth->authorizer, 5588285ea34fSIlya Dryomov auth->authorizer_reply_buf, auth->authorizer_reply_buf_len, 5589285ea34fSIlya Dryomov NULL, NULL, NULL, NULL); 55903d14c5d2SYehuda Sadeh } 55913d14c5d2SYehuda Sadeh 55924972cf60SIlya Dryomov static int osd_invalidate_authorizer(struct ceph_connection *con) 55933d14c5d2SYehuda Sadeh { 55943d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 55953d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 55963d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 55973d14c5d2SYehuda Sadeh 559827859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 55993d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 56003d14c5d2SYehuda Sadeh } 56013d14c5d2SYehuda Sadeh 5602cd1a677cSIlya Dryomov static int osd_get_auth_request(struct ceph_connection *con, 5603cd1a677cSIlya Dryomov void *buf, int *buf_len, 5604cd1a677cSIlya Dryomov void **authorizer, int *authorizer_len) 5605cd1a677cSIlya Dryomov { 5606cd1a677cSIlya Dryomov struct ceph_osd *o = con->private; 5607cd1a677cSIlya Dryomov struct ceph_auth_client *ac = o->o_osdc->client->monc.auth; 5608cd1a677cSIlya Dryomov struct ceph_auth_handshake *auth = &o->o_auth; 5609cd1a677cSIlya Dryomov int ret; 5610cd1a677cSIlya Dryomov 5611cd1a677cSIlya Dryomov ret = ceph_auth_get_authorizer(ac, auth, CEPH_ENTITY_TYPE_OSD, 5612cd1a677cSIlya Dryomov buf, buf_len); 5613cd1a677cSIlya Dryomov if (ret) 5614cd1a677cSIlya Dryomov return ret; 5615cd1a677cSIlya Dryomov 5616cd1a677cSIlya Dryomov *authorizer = auth->authorizer_buf; 5617cd1a677cSIlya Dryomov *authorizer_len = auth->authorizer_buf_len; 5618cd1a677cSIlya Dryomov return 0; 5619cd1a677cSIlya Dryomov } 5620cd1a677cSIlya Dryomov 5621cd1a677cSIlya Dryomov static int osd_handle_auth_reply_more(struct ceph_connection *con, 5622cd1a677cSIlya Dryomov void *reply, int reply_len, 5623cd1a677cSIlya Dryomov void *buf, int *buf_len, 5624cd1a677cSIlya Dryomov void **authorizer, int *authorizer_len) 5625cd1a677cSIlya Dryomov { 5626cd1a677cSIlya Dryomov struct ceph_osd *o = con->private; 5627cd1a677cSIlya Dryomov struct ceph_auth_client *ac = o->o_osdc->client->monc.auth; 5628cd1a677cSIlya Dryomov struct ceph_auth_handshake *auth = &o->o_auth; 5629cd1a677cSIlya Dryomov int ret; 5630cd1a677cSIlya Dryomov 5631cd1a677cSIlya Dryomov ret = ceph_auth_handle_svc_reply_more(ac, auth, reply, reply_len, 5632cd1a677cSIlya Dryomov buf, buf_len); 5633cd1a677cSIlya Dryomov if (ret) 5634cd1a677cSIlya Dryomov return ret; 5635cd1a677cSIlya Dryomov 5636cd1a677cSIlya Dryomov *authorizer = auth->authorizer_buf; 5637cd1a677cSIlya Dryomov *authorizer_len = auth->authorizer_buf_len; 5638cd1a677cSIlya Dryomov return 0; 5639cd1a677cSIlya Dryomov } 5640cd1a677cSIlya Dryomov 5641cd1a677cSIlya Dryomov static int osd_handle_auth_done(struct ceph_connection *con, 5642cd1a677cSIlya Dryomov u64 global_id, void *reply, int reply_len, 5643cd1a677cSIlya Dryomov u8 *session_key, int *session_key_len, 5644cd1a677cSIlya Dryomov u8 *con_secret, int *con_secret_len) 5645cd1a677cSIlya Dryomov { 5646cd1a677cSIlya Dryomov struct ceph_osd *o = con->private; 5647cd1a677cSIlya Dryomov struct ceph_auth_client *ac = o->o_osdc->client->monc.auth; 5648cd1a677cSIlya Dryomov struct ceph_auth_handshake *auth = &o->o_auth; 5649cd1a677cSIlya Dryomov 5650cd1a677cSIlya Dryomov return ceph_auth_handle_svc_reply_done(ac, auth, reply, reply_len, 5651cd1a677cSIlya Dryomov session_key, session_key_len, 5652cd1a677cSIlya Dryomov con_secret, con_secret_len); 5653cd1a677cSIlya Dryomov } 5654cd1a677cSIlya Dryomov 5655cd1a677cSIlya Dryomov static int osd_handle_auth_bad_method(struct ceph_connection *con, 5656cd1a677cSIlya Dryomov int used_proto, int result, 5657cd1a677cSIlya Dryomov const int *allowed_protos, int proto_cnt, 5658cd1a677cSIlya Dryomov const int *allowed_modes, int mode_cnt) 5659cd1a677cSIlya Dryomov { 5660cd1a677cSIlya Dryomov struct ceph_osd *o = con->private; 5661cd1a677cSIlya Dryomov struct ceph_mon_client *monc = &o->o_osdc->client->monc; 5662cd1a677cSIlya Dryomov int ret; 5663cd1a677cSIlya Dryomov 5664cd1a677cSIlya Dryomov if (ceph_auth_handle_bad_authorizer(monc->auth, CEPH_ENTITY_TYPE_OSD, 5665cd1a677cSIlya Dryomov used_proto, result, 5666cd1a677cSIlya Dryomov allowed_protos, proto_cnt, 5667cd1a677cSIlya Dryomov allowed_modes, mode_cnt)) { 5668cd1a677cSIlya Dryomov ret = ceph_monc_validate_auth(monc); 5669cd1a677cSIlya Dryomov if (ret) 5670cd1a677cSIlya Dryomov return ret; 5671cd1a677cSIlya Dryomov } 5672cd1a677cSIlya Dryomov 5673cd1a677cSIlya Dryomov return -EACCES; 5674cd1a677cSIlya Dryomov } 5675cd1a677cSIlya Dryomov 56768cb441c0SIlya Dryomov static void osd_reencode_message(struct ceph_msg *msg) 56778cb441c0SIlya Dryomov { 5678914902afSIlya Dryomov int type = le16_to_cpu(msg->hdr.type); 5679914902afSIlya Dryomov 5680914902afSIlya Dryomov if (type == CEPH_MSG_OSD_OP) 56818cb441c0SIlya Dryomov encode_request_finish(msg); 56828cb441c0SIlya Dryomov } 56838cb441c0SIlya Dryomov 568479dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 568533d07337SYan, Zheng { 568679dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 568733d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 568879dbd1baSIlya Dryomov 568933d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 569033d07337SYan, Zheng } 569133d07337SYan, Zheng 569279dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 569333d07337SYan, Zheng { 569479dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 569533d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 569679dbd1baSIlya Dryomov 569733d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 569833d07337SYan, Zheng } 569933d07337SYan, Zheng 5700*f628d799SJeff Layton static void advance_cursor(struct ceph_msg_data_cursor *cursor, size_t len, 5701*f628d799SJeff Layton bool zero) 5702*f628d799SJeff Layton { 5703*f628d799SJeff Layton while (len) { 5704*f628d799SJeff Layton struct page *page; 5705*f628d799SJeff Layton size_t poff, plen; 5706*f628d799SJeff Layton 5707*f628d799SJeff Layton page = ceph_msg_data_next(cursor, &poff, &plen); 5708*f628d799SJeff Layton if (plen > len) 5709*f628d799SJeff Layton plen = len; 5710*f628d799SJeff Layton if (zero) 5711*f628d799SJeff Layton zero_user_segment(page, poff, poff + plen); 5712*f628d799SJeff Layton len -= plen; 5713*f628d799SJeff Layton ceph_msg_data_advance(cursor, plen); 5714*f628d799SJeff Layton } 5715*f628d799SJeff Layton } 5716*f628d799SJeff Layton 5717*f628d799SJeff Layton static int prep_next_sparse_read(struct ceph_connection *con, 5718*f628d799SJeff Layton struct ceph_msg_data_cursor *cursor) 5719*f628d799SJeff Layton { 5720*f628d799SJeff Layton struct ceph_osd *o = con->private; 5721*f628d799SJeff Layton struct ceph_sparse_read *sr = &o->o_sparse_read; 5722*f628d799SJeff Layton struct ceph_osd_request *req; 5723*f628d799SJeff Layton struct ceph_osd_req_op *op; 5724*f628d799SJeff Layton 5725*f628d799SJeff Layton spin_lock(&o->o_requests_lock); 5726*f628d799SJeff Layton req = lookup_request(&o->o_requests, le64_to_cpu(con->in_msg->hdr.tid)); 5727*f628d799SJeff Layton if (!req) { 5728*f628d799SJeff Layton spin_unlock(&o->o_requests_lock); 5729*f628d799SJeff Layton return -EBADR; 5730*f628d799SJeff Layton } 5731*f628d799SJeff Layton 5732*f628d799SJeff Layton if (o->o_sparse_op_idx < 0) { 5733*f628d799SJeff Layton u64 srlen = sparse_data_requested(req); 5734*f628d799SJeff Layton 5735*f628d799SJeff Layton dout("%s: [%d] starting new sparse read req. srlen=0x%llx\n", 5736*f628d799SJeff Layton __func__, o->o_osd, srlen); 5737*f628d799SJeff Layton ceph_msg_data_cursor_init(cursor, con->in_msg, srlen); 5738*f628d799SJeff Layton } else { 5739*f628d799SJeff Layton u64 end; 5740*f628d799SJeff Layton 5741*f628d799SJeff Layton op = &req->r_ops[o->o_sparse_op_idx]; 5742*f628d799SJeff Layton 5743*f628d799SJeff Layton WARN_ON_ONCE(op->extent.sparse_ext); 5744*f628d799SJeff Layton 5745*f628d799SJeff Layton /* hand back buffer we took earlier */ 5746*f628d799SJeff Layton op->extent.sparse_ext = sr->sr_extent; 5747*f628d799SJeff Layton sr->sr_extent = NULL; 5748*f628d799SJeff Layton op->extent.sparse_ext_cnt = sr->sr_count; 5749*f628d799SJeff Layton sr->sr_ext_len = 0; 5750*f628d799SJeff Layton dout("%s: [%d] completed extent array len %d cursor->resid %zd\n", 5751*f628d799SJeff Layton __func__, o->o_osd, op->extent.sparse_ext_cnt, cursor->resid); 5752*f628d799SJeff Layton /* Advance to end of data for this operation */ 5753*f628d799SJeff Layton end = ceph_sparse_ext_map_end(op); 5754*f628d799SJeff Layton if (end < sr->sr_req_len) 5755*f628d799SJeff Layton advance_cursor(cursor, sr->sr_req_len - end, false); 5756*f628d799SJeff Layton } 5757*f628d799SJeff Layton 5758*f628d799SJeff Layton ceph_init_sparse_read(sr); 5759*f628d799SJeff Layton 5760*f628d799SJeff Layton /* find next op in this request (if any) */ 5761*f628d799SJeff Layton while (++o->o_sparse_op_idx < req->r_num_ops) { 5762*f628d799SJeff Layton op = &req->r_ops[o->o_sparse_op_idx]; 5763*f628d799SJeff Layton if (op->op == CEPH_OSD_OP_SPARSE_READ) 5764*f628d799SJeff Layton goto found; 5765*f628d799SJeff Layton } 5766*f628d799SJeff Layton 5767*f628d799SJeff Layton /* reset for next sparse read request */ 5768*f628d799SJeff Layton spin_unlock(&o->o_requests_lock); 5769*f628d799SJeff Layton o->o_sparse_op_idx = -1; 5770*f628d799SJeff Layton return 0; 5771*f628d799SJeff Layton found: 5772*f628d799SJeff Layton sr->sr_req_off = op->extent.offset; 5773*f628d799SJeff Layton sr->sr_req_len = op->extent.length; 5774*f628d799SJeff Layton sr->sr_pos = sr->sr_req_off; 5775*f628d799SJeff Layton dout("%s: [%d] new sparse read op at idx %d 0x%llx~0x%llx\n", __func__, 5776*f628d799SJeff Layton o->o_osd, o->o_sparse_op_idx, sr->sr_req_off, sr->sr_req_len); 5777*f628d799SJeff Layton 5778*f628d799SJeff Layton /* hand off request's sparse extent map buffer */ 5779*f628d799SJeff Layton sr->sr_ext_len = op->extent.sparse_ext_cnt; 5780*f628d799SJeff Layton op->extent.sparse_ext_cnt = 0; 5781*f628d799SJeff Layton sr->sr_extent = op->extent.sparse_ext; 5782*f628d799SJeff Layton op->extent.sparse_ext = NULL; 5783*f628d799SJeff Layton 5784*f628d799SJeff Layton spin_unlock(&o->o_requests_lock); 5785*f628d799SJeff Layton return 1; 5786*f628d799SJeff Layton } 5787*f628d799SJeff Layton 5788*f628d799SJeff Layton #ifdef __BIG_ENDIAN 5789*f628d799SJeff Layton static inline void convert_extent_map(struct ceph_sparse_read *sr) 5790*f628d799SJeff Layton { 5791*f628d799SJeff Layton int i; 5792*f628d799SJeff Layton 5793*f628d799SJeff Layton for (i = 0; i < sr->sr_count; i++) { 5794*f628d799SJeff Layton struct ceph_sparse_extent *ext = &sr->sr_extent[i]; 5795*f628d799SJeff Layton 5796*f628d799SJeff Layton ext->off = le64_to_cpu((__force __le64)ext->off); 5797*f628d799SJeff Layton ext->len = le64_to_cpu((__force __le64)ext->len); 5798*f628d799SJeff Layton } 5799*f628d799SJeff Layton } 5800*f628d799SJeff Layton #else 5801*f628d799SJeff Layton static inline void convert_extent_map(struct ceph_sparse_read *sr) 5802*f628d799SJeff Layton { 5803*f628d799SJeff Layton } 5804*f628d799SJeff Layton #endif 5805*f628d799SJeff Layton 5806*f628d799SJeff Layton #define MAX_EXTENTS 4096 5807*f628d799SJeff Layton 5808*f628d799SJeff Layton static int osd_sparse_read(struct ceph_connection *con, 5809*f628d799SJeff Layton struct ceph_msg_data_cursor *cursor, 5810*f628d799SJeff Layton char **pbuf) 5811*f628d799SJeff Layton { 5812*f628d799SJeff Layton struct ceph_osd *o = con->private; 5813*f628d799SJeff Layton struct ceph_sparse_read *sr = &o->o_sparse_read; 5814*f628d799SJeff Layton u32 count = sr->sr_count; 5815*f628d799SJeff Layton u64 eoff, elen; 5816*f628d799SJeff Layton int ret; 5817*f628d799SJeff Layton 5818*f628d799SJeff Layton switch (sr->sr_state) { 5819*f628d799SJeff Layton case CEPH_SPARSE_READ_HDR: 5820*f628d799SJeff Layton next_op: 5821*f628d799SJeff Layton ret = prep_next_sparse_read(con, cursor); 5822*f628d799SJeff Layton if (ret <= 0) 5823*f628d799SJeff Layton return ret; 5824*f628d799SJeff Layton 5825*f628d799SJeff Layton /* number of extents */ 5826*f628d799SJeff Layton ret = sizeof(sr->sr_count); 5827*f628d799SJeff Layton *pbuf = (char *)&sr->sr_count; 5828*f628d799SJeff Layton sr->sr_state = CEPH_SPARSE_READ_EXTENTS; 5829*f628d799SJeff Layton break; 5830*f628d799SJeff Layton case CEPH_SPARSE_READ_EXTENTS: 5831*f628d799SJeff Layton /* Convert sr_count to host-endian */ 5832*f628d799SJeff Layton count = le32_to_cpu((__force __le32)sr->sr_count); 5833*f628d799SJeff Layton sr->sr_count = count; 5834*f628d799SJeff Layton dout("[%d] got %u extents\n", o->o_osd, count); 5835*f628d799SJeff Layton 5836*f628d799SJeff Layton if (count > 0) { 5837*f628d799SJeff Layton if (!sr->sr_extent || count > sr->sr_ext_len) { 5838*f628d799SJeff Layton /* 5839*f628d799SJeff Layton * Apply a hard cap to the number of extents. 5840*f628d799SJeff Layton * If we have more, assume something is wrong. 5841*f628d799SJeff Layton */ 5842*f628d799SJeff Layton if (count > MAX_EXTENTS) { 5843*f628d799SJeff Layton dout("%s: OSD returned 0x%x extents in a single reply!\n", 5844*f628d799SJeff Layton __func__, count); 5845*f628d799SJeff Layton return -EREMOTEIO; 5846*f628d799SJeff Layton } 5847*f628d799SJeff Layton 5848*f628d799SJeff Layton /* no extent array provided, or too short */ 5849*f628d799SJeff Layton kfree(sr->sr_extent); 5850*f628d799SJeff Layton sr->sr_extent = kmalloc_array(count, 5851*f628d799SJeff Layton sizeof(*sr->sr_extent), 5852*f628d799SJeff Layton GFP_NOIO); 5853*f628d799SJeff Layton if (!sr->sr_extent) 5854*f628d799SJeff Layton return -ENOMEM; 5855*f628d799SJeff Layton sr->sr_ext_len = count; 5856*f628d799SJeff Layton } 5857*f628d799SJeff Layton ret = count * sizeof(*sr->sr_extent); 5858*f628d799SJeff Layton *pbuf = (char *)sr->sr_extent; 5859*f628d799SJeff Layton sr->sr_state = CEPH_SPARSE_READ_DATA_LEN; 5860*f628d799SJeff Layton break; 5861*f628d799SJeff Layton } 5862*f628d799SJeff Layton /* No extents? Read data len */ 5863*f628d799SJeff Layton fallthrough; 5864*f628d799SJeff Layton case CEPH_SPARSE_READ_DATA_LEN: 5865*f628d799SJeff Layton convert_extent_map(sr); 5866*f628d799SJeff Layton ret = sizeof(sr->sr_datalen); 5867*f628d799SJeff Layton *pbuf = (char *)&sr->sr_datalen; 5868*f628d799SJeff Layton sr->sr_state = CEPH_SPARSE_READ_DATA; 5869*f628d799SJeff Layton break; 5870*f628d799SJeff Layton case CEPH_SPARSE_READ_DATA: 5871*f628d799SJeff Layton if (sr->sr_index >= count) { 5872*f628d799SJeff Layton sr->sr_state = CEPH_SPARSE_READ_HDR; 5873*f628d799SJeff Layton goto next_op; 5874*f628d799SJeff Layton } 5875*f628d799SJeff Layton 5876*f628d799SJeff Layton eoff = sr->sr_extent[sr->sr_index].off; 5877*f628d799SJeff Layton elen = sr->sr_extent[sr->sr_index].len; 5878*f628d799SJeff Layton 5879*f628d799SJeff Layton dout("[%d] ext %d off 0x%llx len 0x%llx\n", 5880*f628d799SJeff Layton o->o_osd, sr->sr_index, eoff, elen); 5881*f628d799SJeff Layton 5882*f628d799SJeff Layton if (elen > INT_MAX) { 5883*f628d799SJeff Layton dout("Sparse read extent length too long (0x%llx)\n", 5884*f628d799SJeff Layton elen); 5885*f628d799SJeff Layton return -EREMOTEIO; 5886*f628d799SJeff Layton } 5887*f628d799SJeff Layton 5888*f628d799SJeff Layton /* zero out anything from sr_pos to start of extent */ 5889*f628d799SJeff Layton if (sr->sr_pos < eoff) 5890*f628d799SJeff Layton advance_cursor(cursor, eoff - sr->sr_pos, true); 5891*f628d799SJeff Layton 5892*f628d799SJeff Layton /* Set position to end of extent */ 5893*f628d799SJeff Layton sr->sr_pos = eoff + elen; 5894*f628d799SJeff Layton 5895*f628d799SJeff Layton /* send back the new length and nullify the ptr */ 5896*f628d799SJeff Layton cursor->sr_resid = elen; 5897*f628d799SJeff Layton ret = elen; 5898*f628d799SJeff Layton *pbuf = NULL; 5899*f628d799SJeff Layton 5900*f628d799SJeff Layton /* Bump the array index */ 5901*f628d799SJeff Layton ++sr->sr_index; 5902*f628d799SJeff Layton break; 5903*f628d799SJeff Layton } 5904*f628d799SJeff Layton return ret; 5905*f628d799SJeff Layton } 5906*f628d799SJeff Layton 59073d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 59084972cf60SIlya Dryomov .get = osd_get_con, 59094972cf60SIlya Dryomov .put = osd_put_con, 5910*f628d799SJeff Layton .sparse_read = osd_sparse_read, 59114972cf60SIlya Dryomov .alloc_msg = osd_alloc_msg, 59124972cf60SIlya Dryomov .dispatch = osd_dispatch, 59134972cf60SIlya Dryomov .fault = osd_fault, 59148cb441c0SIlya Dryomov .reencode_message = osd_reencode_message, 59154972cf60SIlya Dryomov .get_authorizer = osd_get_authorizer, 59164972cf60SIlya Dryomov .add_authorizer_challenge = osd_add_authorizer_challenge, 59174972cf60SIlya Dryomov .verify_authorizer_reply = osd_verify_authorizer_reply, 59184972cf60SIlya Dryomov .invalidate_authorizer = osd_invalidate_authorizer, 591979dbd1baSIlya Dryomov .sign_message = osd_sign_message, 592079dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 5921cd1a677cSIlya Dryomov .get_auth_request = osd_get_auth_request, 5922cd1a677cSIlya Dryomov .handle_auth_reply_more = osd_handle_auth_reply_more, 5923cd1a677cSIlya Dryomov .handle_auth_done = osd_handle_auth_done, 5924cd1a677cSIlya Dryomov .handle_auth_bad_method = osd_handle_auth_bad_method, 59253d14c5d2SYehuda Sadeh }; 5926