1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 2a4ce40a9SAlex Elder 33d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 43d14c5d2SYehuda Sadeh 53d14c5d2SYehuda Sadeh #include <linux/module.h> 63d14c5d2SYehuda Sadeh #include <linux/err.h> 73d14c5d2SYehuda Sadeh #include <linux/highmem.h> 83d14c5d2SYehuda Sadeh #include <linux/mm.h> 93d14c5d2SYehuda Sadeh #include <linux/pagemap.h> 103d14c5d2SYehuda Sadeh #include <linux/slab.h> 113d14c5d2SYehuda Sadeh #include <linux/uaccess.h> 123d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 133d14c5d2SYehuda Sadeh #include <linux/bio.h> 143d14c5d2SYehuda Sadeh #endif 153d14c5d2SYehuda Sadeh 168cb441c0SIlya Dryomov #include <linux/ceph/ceph_features.h> 173d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 183d14c5d2SYehuda Sadeh #include <linux/ceph/osd_client.h> 193d14c5d2SYehuda Sadeh #include <linux/ceph/messenger.h> 203d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 213d14c5d2SYehuda Sadeh #include <linux/ceph/auth.h> 223d14c5d2SYehuda Sadeh #include <linux/ceph/pagelist.h> 2308c1ac50SIlya Dryomov #include <linux/ceph/striper.h> 243d14c5d2SYehuda Sadeh 253d14c5d2SYehuda Sadeh #define OSD_OPREPLY_FRONT_LEN 512 263d14c5d2SYehuda Sadeh 275522ae0bSAlex Elder static struct kmem_cache *ceph_osd_request_cache; 285522ae0bSAlex Elder 293d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops; 303d14c5d2SYehuda Sadeh 313d14c5d2SYehuda Sadeh /* 323d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 333d14c5d2SYehuda Sadeh * 343d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 353d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 363d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 373d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 383d14c5d2SYehuda Sadeh * access to storage. 393d14c5d2SYehuda Sadeh * 403d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 413d14c5d2SYehuda Sadeh * are described by the osd map. 423d14c5d2SYehuda Sadeh * 433d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 443d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 453d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 463d14c5d2SYehuda Sadeh * channel with an OSD is reset. 473d14c5d2SYehuda Sadeh */ 483d14c5d2SYehuda Sadeh 495aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req); 505aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req); 51922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 52922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq); 53922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 54922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq); 55a02a946dSIlya Dryomov static void clear_backoffs(struct ceph_osd *osd); 565aea3dcdSIlya Dryomov 575aea3dcdSIlya Dryomov #if 1 585aea3dcdSIlya Dryomov static inline bool rwsem_is_wrlocked(struct rw_semaphore *sem) 595aea3dcdSIlya Dryomov { 605aea3dcdSIlya Dryomov bool wrlocked = true; 615aea3dcdSIlya Dryomov 625aea3dcdSIlya Dryomov if (unlikely(down_read_trylock(sem))) { 635aea3dcdSIlya Dryomov wrlocked = false; 645aea3dcdSIlya Dryomov up_read(sem); 655aea3dcdSIlya Dryomov } 665aea3dcdSIlya Dryomov 675aea3dcdSIlya Dryomov return wrlocked; 685aea3dcdSIlya Dryomov } 695aea3dcdSIlya Dryomov static inline void verify_osdc_locked(struct ceph_osd_client *osdc) 705aea3dcdSIlya Dryomov { 715aea3dcdSIlya Dryomov WARN_ON(!rwsem_is_locked(&osdc->lock)); 725aea3dcdSIlya Dryomov } 735aea3dcdSIlya Dryomov static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) 745aea3dcdSIlya Dryomov { 755aea3dcdSIlya Dryomov WARN_ON(!rwsem_is_wrlocked(&osdc->lock)); 765aea3dcdSIlya Dryomov } 775aea3dcdSIlya Dryomov static inline void verify_osd_locked(struct ceph_osd *osd) 785aea3dcdSIlya Dryomov { 795aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 805aea3dcdSIlya Dryomov 815aea3dcdSIlya Dryomov WARN_ON(!(mutex_is_locked(&osd->lock) && 825aea3dcdSIlya Dryomov rwsem_is_locked(&osdc->lock)) && 835aea3dcdSIlya Dryomov !rwsem_is_wrlocked(&osdc->lock)); 845aea3dcdSIlya Dryomov } 85922dab61SIlya Dryomov static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) 86922dab61SIlya Dryomov { 87922dab61SIlya Dryomov WARN_ON(!mutex_is_locked(&lreq->lock)); 88922dab61SIlya Dryomov } 895aea3dcdSIlya Dryomov #else 905aea3dcdSIlya Dryomov static inline void verify_osdc_locked(struct ceph_osd_client *osdc) { } 915aea3dcdSIlya Dryomov static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) { } 925aea3dcdSIlya Dryomov static inline void verify_osd_locked(struct ceph_osd *osd) { } 93922dab61SIlya Dryomov static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) { } 945aea3dcdSIlya Dryomov #endif 955aea3dcdSIlya Dryomov 963d14c5d2SYehuda Sadeh /* 973d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 983d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 993d14c5d2SYehuda Sadeh * object boundary. 1003d14c5d2SYehuda Sadeh * 1013d14c5d2SYehuda Sadeh * fill osd op in request message. 1023d14c5d2SYehuda Sadeh */ 103dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 104a19dadfbSAlex Elder u64 *objnum, u64 *objoff, u64 *objlen) 1053d14c5d2SYehuda Sadeh { 10660e56f13SAlex Elder u64 orig_len = *plen; 107dccbf080SIlya Dryomov u32 xlen; 1083d14c5d2SYehuda Sadeh 10960e56f13SAlex Elder /* object extent? */ 110dccbf080SIlya Dryomov ceph_calc_file_object_mapping(layout, off, orig_len, objnum, 111dccbf080SIlya Dryomov objoff, &xlen); 112dccbf080SIlya Dryomov *objlen = xlen; 11375d1c941SAlex Elder if (*objlen < orig_len) { 11475d1c941SAlex Elder *plen = *objlen; 11560e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 11660e56f13SAlex Elder orig_len - *plen, off, *plen); 11760e56f13SAlex Elder } 11860e56f13SAlex Elder 11975d1c941SAlex Elder dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); 1203ff5f385SAlex Elder return 0; 1213d14c5d2SYehuda Sadeh } 1223d14c5d2SYehuda Sadeh 123c54d47bfSAlex Elder static void ceph_osd_data_init(struct ceph_osd_data *osd_data) 124c54d47bfSAlex Elder { 125c54d47bfSAlex Elder memset(osd_data, 0, sizeof (*osd_data)); 126c54d47bfSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_NONE; 127c54d47bfSAlex Elder } 128c54d47bfSAlex Elder 12989486833SIlya Dryomov /* 13089486833SIlya Dryomov * Consumes @pages if @own_pages is true. 13189486833SIlya Dryomov */ 132a4ce40a9SAlex Elder static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, 13343bfe5deSAlex Elder struct page **pages, u64 length, u32 alignment, 13443bfe5deSAlex Elder bool pages_from_pool, bool own_pages) 13543bfe5deSAlex Elder { 13643bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 13743bfe5deSAlex Elder osd_data->pages = pages; 13843bfe5deSAlex Elder osd_data->length = length; 13943bfe5deSAlex Elder osd_data->alignment = alignment; 14043bfe5deSAlex Elder osd_data->pages_from_pool = pages_from_pool; 14143bfe5deSAlex Elder osd_data->own_pages = own_pages; 14243bfe5deSAlex Elder } 14343bfe5deSAlex Elder 14489486833SIlya Dryomov /* 14589486833SIlya Dryomov * Consumes a ref on @pagelist. 14689486833SIlya Dryomov */ 147a4ce40a9SAlex Elder static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, 14843bfe5deSAlex Elder struct ceph_pagelist *pagelist) 14943bfe5deSAlex Elder { 15043bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; 15143bfe5deSAlex Elder osd_data->pagelist = pagelist; 15243bfe5deSAlex Elder } 15343bfe5deSAlex Elder 15443bfe5deSAlex Elder #ifdef CONFIG_BLOCK 155a4ce40a9SAlex Elder static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 1565359a17dSIlya Dryomov struct ceph_bio_iter *bio_pos, 1575359a17dSIlya Dryomov u32 bio_length) 15843bfe5deSAlex Elder { 15943bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_BIO; 1605359a17dSIlya Dryomov osd_data->bio_pos = *bio_pos; 16143bfe5deSAlex Elder osd_data->bio_length = bio_length; 16243bfe5deSAlex Elder } 16343bfe5deSAlex Elder #endif /* CONFIG_BLOCK */ 16443bfe5deSAlex Elder 165b9e281c2SIlya Dryomov static void ceph_osd_data_bvecs_init(struct ceph_osd_data *osd_data, 1660010f705SIlya Dryomov struct ceph_bvec_iter *bvec_pos, 1670010f705SIlya Dryomov u32 num_bvecs) 168b9e281c2SIlya Dryomov { 169b9e281c2SIlya Dryomov osd_data->type = CEPH_OSD_DATA_TYPE_BVECS; 170b9e281c2SIlya Dryomov osd_data->bvec_pos = *bvec_pos; 1710010f705SIlya Dryomov osd_data->num_bvecs = num_bvecs; 172b9e281c2SIlya Dryomov } 173b9e281c2SIlya Dryomov 17449719778SAlex Elder static struct ceph_osd_data * 17549719778SAlex Elder osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) 17649719778SAlex Elder { 17749719778SAlex Elder BUG_ON(which >= osd_req->r_num_ops); 17849719778SAlex Elder 17949719778SAlex Elder return &osd_req->r_ops[which].raw_data_in; 18049719778SAlex Elder } 18149719778SAlex Elder 182a4ce40a9SAlex Elder struct ceph_osd_data * 183a4ce40a9SAlex Elder osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, 184406e2c9fSAlex Elder unsigned int which) 185a4ce40a9SAlex Elder { 186863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, extent, osd_data); 187a4ce40a9SAlex Elder } 188a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data); 189a4ce40a9SAlex Elder 19049719778SAlex Elder void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 19149719778SAlex Elder unsigned int which, struct page **pages, 19249719778SAlex Elder u64 length, u32 alignment, 19349719778SAlex Elder bool pages_from_pool, bool own_pages) 19449719778SAlex Elder { 19549719778SAlex Elder struct ceph_osd_data *osd_data; 19649719778SAlex Elder 19749719778SAlex Elder osd_data = osd_req_op_raw_data_in(osd_req, which); 19849719778SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 19949719778SAlex Elder pages_from_pool, own_pages); 20049719778SAlex Elder } 20149719778SAlex Elder EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 20249719778SAlex Elder 203a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 204406e2c9fSAlex Elder unsigned int which, struct page **pages, 205406e2c9fSAlex Elder u64 length, u32 alignment, 206a4ce40a9SAlex Elder bool pages_from_pool, bool own_pages) 207a4ce40a9SAlex Elder { 208a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 209a4ce40a9SAlex Elder 210863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 211a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 212a4ce40a9SAlex Elder pages_from_pool, own_pages); 213a4ce40a9SAlex Elder } 214a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 215a4ce40a9SAlex Elder 216a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 217406e2c9fSAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 218a4ce40a9SAlex Elder { 219a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 220a4ce40a9SAlex Elder 221863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 222a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 223a4ce40a9SAlex Elder } 224a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 225a4ce40a9SAlex Elder 226a4ce40a9SAlex Elder #ifdef CONFIG_BLOCK 227a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 2285359a17dSIlya Dryomov unsigned int which, 2295359a17dSIlya Dryomov struct ceph_bio_iter *bio_pos, 2305359a17dSIlya Dryomov u32 bio_length) 231a4ce40a9SAlex Elder { 232a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 233863c7eb5SAlex Elder 234863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2355359a17dSIlya Dryomov ceph_osd_data_bio_init(osd_data, bio_pos, bio_length); 236a4ce40a9SAlex Elder } 237a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 238a4ce40a9SAlex Elder #endif /* CONFIG_BLOCK */ 239a4ce40a9SAlex Elder 2400010f705SIlya Dryomov void osd_req_op_extent_osd_data_bvecs(struct ceph_osd_request *osd_req, 2410010f705SIlya Dryomov unsigned int which, 2420010f705SIlya Dryomov struct bio_vec *bvecs, u32 num_bvecs, 2430010f705SIlya Dryomov u32 bytes) 2440010f705SIlya Dryomov { 2450010f705SIlya Dryomov struct ceph_osd_data *osd_data; 2460010f705SIlya Dryomov struct ceph_bvec_iter it = { 2470010f705SIlya Dryomov .bvecs = bvecs, 2480010f705SIlya Dryomov .iter = { .bi_size = bytes }, 2490010f705SIlya Dryomov }; 2500010f705SIlya Dryomov 2510010f705SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2520010f705SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, &it, num_bvecs); 2530010f705SIlya Dryomov } 2540010f705SIlya Dryomov EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvecs); 2550010f705SIlya Dryomov 256b9e281c2SIlya Dryomov void osd_req_op_extent_osd_data_bvec_pos(struct ceph_osd_request *osd_req, 257b9e281c2SIlya Dryomov unsigned int which, 258b9e281c2SIlya Dryomov struct ceph_bvec_iter *bvec_pos) 259b9e281c2SIlya Dryomov { 260b9e281c2SIlya Dryomov struct ceph_osd_data *osd_data; 261b9e281c2SIlya Dryomov 262b9e281c2SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 2630010f705SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, bvec_pos, 0); 264b9e281c2SIlya Dryomov } 265b9e281c2SIlya Dryomov EXPORT_SYMBOL(osd_req_op_extent_osd_data_bvec_pos); 266b9e281c2SIlya Dryomov 267a4ce40a9SAlex Elder static void osd_req_op_cls_request_info_pagelist( 268a4ce40a9SAlex Elder struct ceph_osd_request *osd_req, 269a4ce40a9SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 270a4ce40a9SAlex Elder { 271a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 272a4ce40a9SAlex Elder 273863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_info); 274a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 275a4ce40a9SAlex Elder } 276a4ce40a9SAlex Elder 27704017e29SAlex Elder void osd_req_op_cls_request_data_pagelist( 27804017e29SAlex Elder struct ceph_osd_request *osd_req, 27904017e29SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 28004017e29SAlex Elder { 28104017e29SAlex Elder struct ceph_osd_data *osd_data; 28204017e29SAlex Elder 283863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 28404017e29SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 285bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += pagelist->length; 286bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += pagelist->length; 28704017e29SAlex Elder } 28804017e29SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 28904017e29SAlex Elder 2906c57b554SAlex Elder void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 2916c57b554SAlex Elder unsigned int which, struct page **pages, u64 length, 2926c57b554SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 2936c57b554SAlex Elder { 2946c57b554SAlex Elder struct ceph_osd_data *osd_data; 2956c57b554SAlex Elder 2966c57b554SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 2976c57b554SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 2986c57b554SAlex Elder pages_from_pool, own_pages); 299bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += length; 300bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += length; 3016c57b554SAlex Elder } 3026c57b554SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 3036c57b554SAlex Elder 304b9e281c2SIlya Dryomov void osd_req_op_cls_request_data_bvecs(struct ceph_osd_request *osd_req, 305b9e281c2SIlya Dryomov unsigned int which, 3060010f705SIlya Dryomov struct bio_vec *bvecs, u32 num_bvecs, 3070010f705SIlya Dryomov u32 bytes) 308b9e281c2SIlya Dryomov { 309b9e281c2SIlya Dryomov struct ceph_osd_data *osd_data; 310b9e281c2SIlya Dryomov struct ceph_bvec_iter it = { 311b9e281c2SIlya Dryomov .bvecs = bvecs, 312b9e281c2SIlya Dryomov .iter = { .bi_size = bytes }, 313b9e281c2SIlya Dryomov }; 314b9e281c2SIlya Dryomov 315b9e281c2SIlya Dryomov osd_data = osd_req_op_data(osd_req, which, cls, request_data); 3160010f705SIlya Dryomov ceph_osd_data_bvecs_init(osd_data, &it, num_bvecs); 317b9e281c2SIlya Dryomov osd_req->r_ops[which].cls.indata_len += bytes; 318b9e281c2SIlya Dryomov osd_req->r_ops[which].indata_len += bytes; 319b9e281c2SIlya Dryomov } 320b9e281c2SIlya Dryomov EXPORT_SYMBOL(osd_req_op_cls_request_data_bvecs); 321b9e281c2SIlya Dryomov 322a4ce40a9SAlex Elder void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 323a4ce40a9SAlex Elder unsigned int which, struct page **pages, u64 length, 324a4ce40a9SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 325a4ce40a9SAlex Elder { 326a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 327a4ce40a9SAlex Elder 328863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, response_data); 329a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 330a4ce40a9SAlex Elder pages_from_pool, own_pages); 331a4ce40a9SAlex Elder } 332a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 333a4ce40a9SAlex Elder 33423c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 33523c08a9cSAlex Elder { 33623c08a9cSAlex Elder switch (osd_data->type) { 33723c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 33823c08a9cSAlex Elder return 0; 33923c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 34023c08a9cSAlex Elder return osd_data->length; 34123c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 34223c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 34323c08a9cSAlex Elder #ifdef CONFIG_BLOCK 34423c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 34523c08a9cSAlex Elder return (u64)osd_data->bio_length; 34623c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 347b9e281c2SIlya Dryomov case CEPH_OSD_DATA_TYPE_BVECS: 348b9e281c2SIlya Dryomov return osd_data->bvec_pos.iter.bi_size; 34923c08a9cSAlex Elder default: 35023c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 35123c08a9cSAlex Elder return 0; 35223c08a9cSAlex Elder } 35323c08a9cSAlex Elder } 35423c08a9cSAlex Elder 355c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 356c54d47bfSAlex Elder { 3575476492fSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 358c54d47bfSAlex Elder int num_pages; 359c54d47bfSAlex Elder 360c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 361c54d47bfSAlex Elder (u64)osd_data->length); 362c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 36389486833SIlya Dryomov } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 36489486833SIlya Dryomov ceph_pagelist_release(osd_data->pagelist); 365c54d47bfSAlex Elder } 3665476492fSAlex Elder ceph_osd_data_init(osd_data); 3675476492fSAlex Elder } 3685476492fSAlex Elder 3695476492fSAlex Elder static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 3705476492fSAlex Elder unsigned int which) 3715476492fSAlex Elder { 3725476492fSAlex Elder struct ceph_osd_req_op *op; 3735476492fSAlex Elder 3745476492fSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 3755476492fSAlex Elder op = &osd_req->r_ops[which]; 3765476492fSAlex Elder 3775476492fSAlex Elder switch (op->op) { 3785476492fSAlex Elder case CEPH_OSD_OP_READ: 3795476492fSAlex Elder case CEPH_OSD_OP_WRITE: 380e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 3815476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 3825476492fSAlex Elder break; 3835476492fSAlex Elder case CEPH_OSD_OP_CALL: 3845476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 38504017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 3865476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 3875476492fSAlex Elder break; 388d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 389d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 390d74b50beSYan, Zheng ceph_osd_data_release(&op->xattr.osd_data); 391d74b50beSYan, Zheng break; 39266ba609fSYan, Zheng case CEPH_OSD_OP_STAT: 39366ba609fSYan, Zheng ceph_osd_data_release(&op->raw_data_in); 39466ba609fSYan, Zheng break; 395922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 396922dab61SIlya Dryomov ceph_osd_data_release(&op->notify_ack.request_data); 397922dab61SIlya Dryomov break; 39819079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 39919079203SIlya Dryomov ceph_osd_data_release(&op->notify.request_data); 40019079203SIlya Dryomov ceph_osd_data_release(&op->notify.response_data); 40119079203SIlya Dryomov break; 402a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 403a4ed38d7SDouglas Fuller ceph_osd_data_release(&op->list_watchers.response_data); 404a4ed38d7SDouglas Fuller break; 40578beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 40623ddf9beSLuis Henriques ceph_osd_data_release(&op->copy_from.osd_data); 40723ddf9beSLuis Henriques break; 4085476492fSAlex Elder default: 4095476492fSAlex Elder break; 4105476492fSAlex Elder } 411c54d47bfSAlex Elder } 412c54d47bfSAlex Elder 4133d14c5d2SYehuda Sadeh /* 41463244fa1SIlya Dryomov * Assumes @t is zero-initialized. 41563244fa1SIlya Dryomov */ 41663244fa1SIlya Dryomov static void target_init(struct ceph_osd_request_target *t) 41763244fa1SIlya Dryomov { 41863244fa1SIlya Dryomov ceph_oid_init(&t->base_oid); 41963244fa1SIlya Dryomov ceph_oloc_init(&t->base_oloc); 42063244fa1SIlya Dryomov ceph_oid_init(&t->target_oid); 42163244fa1SIlya Dryomov ceph_oloc_init(&t->target_oloc); 42263244fa1SIlya Dryomov 42363244fa1SIlya Dryomov ceph_osds_init(&t->acting); 42463244fa1SIlya Dryomov ceph_osds_init(&t->up); 42563244fa1SIlya Dryomov t->size = -1; 42663244fa1SIlya Dryomov t->min_size = -1; 42763244fa1SIlya Dryomov 42863244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 42963244fa1SIlya Dryomov } 43063244fa1SIlya Dryomov 431922dab61SIlya Dryomov static void target_copy(struct ceph_osd_request_target *dest, 432922dab61SIlya Dryomov const struct ceph_osd_request_target *src) 433922dab61SIlya Dryomov { 434922dab61SIlya Dryomov ceph_oid_copy(&dest->base_oid, &src->base_oid); 435922dab61SIlya Dryomov ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); 436922dab61SIlya Dryomov ceph_oid_copy(&dest->target_oid, &src->target_oid); 437922dab61SIlya Dryomov ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); 438922dab61SIlya Dryomov 439922dab61SIlya Dryomov dest->pgid = src->pgid; /* struct */ 440dc98ff72SIlya Dryomov dest->spgid = src->spgid; /* struct */ 441922dab61SIlya Dryomov dest->pg_num = src->pg_num; 442922dab61SIlya Dryomov dest->pg_num_mask = src->pg_num_mask; 443922dab61SIlya Dryomov ceph_osds_copy(&dest->acting, &src->acting); 444922dab61SIlya Dryomov ceph_osds_copy(&dest->up, &src->up); 445922dab61SIlya Dryomov dest->size = src->size; 446922dab61SIlya Dryomov dest->min_size = src->min_size; 447922dab61SIlya Dryomov dest->sort_bitwise = src->sort_bitwise; 4482f3fead6SIlya Dryomov dest->recovery_deletes = src->recovery_deletes; 449922dab61SIlya Dryomov 450922dab61SIlya Dryomov dest->flags = src->flags; 4517ed286f3SIlya Dryomov dest->used_replica = src->used_replica; 452922dab61SIlya Dryomov dest->paused = src->paused; 453922dab61SIlya Dryomov 45404c7d789SIlya Dryomov dest->epoch = src->epoch; 455dc93e0e2SIlya Dryomov dest->last_force_resend = src->last_force_resend; 456dc93e0e2SIlya Dryomov 457922dab61SIlya Dryomov dest->osd = src->osd; 458922dab61SIlya Dryomov } 459922dab61SIlya Dryomov 46063244fa1SIlya Dryomov static void target_destroy(struct ceph_osd_request_target *t) 46163244fa1SIlya Dryomov { 46263244fa1SIlya Dryomov ceph_oid_destroy(&t->base_oid); 46330c156d9SYan, Zheng ceph_oloc_destroy(&t->base_oloc); 46463244fa1SIlya Dryomov ceph_oid_destroy(&t->target_oid); 46530c156d9SYan, Zheng ceph_oloc_destroy(&t->target_oloc); 46663244fa1SIlya Dryomov } 46763244fa1SIlya Dryomov 46863244fa1SIlya Dryomov /* 4693d14c5d2SYehuda Sadeh * requests 4703d14c5d2SYehuda Sadeh */ 4713540bfdbSIlya Dryomov static void request_release_checks(struct ceph_osd_request *req) 4723540bfdbSIlya Dryomov { 4733540bfdbSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 4744609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node)); 47594e85771SIlya Dryomov WARN_ON(!list_empty(&req->r_private_item)); 4763540bfdbSIlya Dryomov WARN_ON(req->r_osd); 4773540bfdbSIlya Dryomov } 4783540bfdbSIlya Dryomov 4799e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 4803d14c5d2SYehuda Sadeh { 4819e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 4829e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 4835476492fSAlex Elder unsigned int which; 4843d14c5d2SYehuda Sadeh 4859e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 4869e94af20SIlya Dryomov req->r_request, req->r_reply); 4873540bfdbSIlya Dryomov request_release_checks(req); 4889e94af20SIlya Dryomov 4893d14c5d2SYehuda Sadeh if (req->r_request) 4903d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 4915aea3dcdSIlya Dryomov if (req->r_reply) 492ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 4930fff87ecSAlex Elder 4945476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 4955476492fSAlex Elder osd_req_op_data_release(req, which); 4960fff87ecSAlex Elder 497a66dd383SIlya Dryomov target_destroy(&req->r_t); 4983d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 499d30291b9SIlya Dryomov 5003d14c5d2SYehuda Sadeh if (req->r_mempool) 5013d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 5023f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 5035522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 5043f1af42aSIlya Dryomov else 5053f1af42aSIlya Dryomov kfree(req); 5063d14c5d2SYehuda Sadeh } 5079e94af20SIlya Dryomov 5089e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 5099e94af20SIlya Dryomov { 5109e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 5112c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 5129e94af20SIlya Dryomov kref_get(&req->r_kref); 5139e94af20SIlya Dryomov } 5149e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 5159e94af20SIlya Dryomov 5169e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 5179e94af20SIlya Dryomov { 5183ed97d63SIlya Dryomov if (req) { 5199e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 5202c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 5219e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 5229e94af20SIlya Dryomov } 5233ed97d63SIlya Dryomov } 5249e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 5253d14c5d2SYehuda Sadeh 5263540bfdbSIlya Dryomov static void request_init(struct ceph_osd_request *req) 5273540bfdbSIlya Dryomov { 5283540bfdbSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 5293540bfdbSIlya Dryomov memset(req, 0, sizeof(*req)); 5303540bfdbSIlya Dryomov 5313540bfdbSIlya Dryomov kref_init(&req->r_kref); 5323540bfdbSIlya Dryomov init_completion(&req->r_completion); 5333540bfdbSIlya Dryomov RB_CLEAR_NODE(&req->r_node); 5344609245eSIlya Dryomov RB_CLEAR_NODE(&req->r_mc_node); 53594e85771SIlya Dryomov INIT_LIST_HEAD(&req->r_private_item); 5363540bfdbSIlya Dryomov 5373540bfdbSIlya Dryomov target_init(&req->r_t); 5383540bfdbSIlya Dryomov } 5393540bfdbSIlya Dryomov 540922dab61SIlya Dryomov /* 541922dab61SIlya Dryomov * This is ugly, but it allows us to reuse linger registration and ping 542922dab61SIlya Dryomov * requests, keeping the structure of the code around send_linger{_ping}() 543922dab61SIlya Dryomov * reasonable. Setting up a min_nr=2 mempool for each linger request 544922dab61SIlya Dryomov * and dealing with copying ops (this blasts req only, watch op remains 545922dab61SIlya Dryomov * intact) isn't any better. 546922dab61SIlya Dryomov */ 547922dab61SIlya Dryomov static void request_reinit(struct ceph_osd_request *req) 548922dab61SIlya Dryomov { 549922dab61SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 550922dab61SIlya Dryomov bool mempool = req->r_mempool; 551922dab61SIlya Dryomov unsigned int num_ops = req->r_num_ops; 552922dab61SIlya Dryomov u64 snapid = req->r_snapid; 553922dab61SIlya Dryomov struct ceph_snap_context *snapc = req->r_snapc; 554922dab61SIlya Dryomov bool linger = req->r_linger; 555922dab61SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 556922dab61SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 557922dab61SIlya Dryomov 558922dab61SIlya Dryomov dout("%s req %p\n", __func__, req); 5592c935bc5SPeter Zijlstra WARN_ON(kref_read(&req->r_kref) != 1); 560922dab61SIlya Dryomov request_release_checks(req); 561922dab61SIlya Dryomov 5622c935bc5SPeter Zijlstra WARN_ON(kref_read(&request_msg->kref) != 1); 5632c935bc5SPeter Zijlstra WARN_ON(kref_read(&reply_msg->kref) != 1); 564922dab61SIlya Dryomov target_destroy(&req->r_t); 565922dab61SIlya Dryomov 566922dab61SIlya Dryomov request_init(req); 567922dab61SIlya Dryomov req->r_osdc = osdc; 568922dab61SIlya Dryomov req->r_mempool = mempool; 569922dab61SIlya Dryomov req->r_num_ops = num_ops; 570922dab61SIlya Dryomov req->r_snapid = snapid; 571922dab61SIlya Dryomov req->r_snapc = snapc; 572922dab61SIlya Dryomov req->r_linger = linger; 573922dab61SIlya Dryomov req->r_request = request_msg; 574922dab61SIlya Dryomov req->r_reply = reply_msg; 575922dab61SIlya Dryomov } 576922dab61SIlya Dryomov 5773d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 5783d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5791b83bef2SSage Weil unsigned int num_ops, 5803d14c5d2SYehuda Sadeh bool use_mempool, 58154a54007SAlex Elder gfp_t gfp_flags) 5823d14c5d2SYehuda Sadeh { 5833d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5843d14c5d2SYehuda Sadeh 5853d14c5d2SYehuda Sadeh if (use_mempool) { 5863f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 5873d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 5883f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 5893f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 5903d14c5d2SYehuda Sadeh } else { 5913f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 592acafe7e3SKees Cook req = kmalloc(struct_size(req, r_ops, num_ops), gfp_flags); 5933d14c5d2SYehuda Sadeh } 5943f1af42aSIlya Dryomov if (unlikely(!req)) 5953d14c5d2SYehuda Sadeh return NULL; 5963d14c5d2SYehuda Sadeh 5973540bfdbSIlya Dryomov request_init(req); 5983d14c5d2SYehuda Sadeh req->r_osdc = osdc; 5993d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 60079528734SAlex Elder req->r_num_ops = num_ops; 60184127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 60284127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 6033d14c5d2SYehuda Sadeh 60413d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 60513d1ad16SIlya Dryomov return req; 6063f1af42aSIlya Dryomov } 60713d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 6083f1af42aSIlya Dryomov 6092e59ffd1SIlya Dryomov static int ceph_oloc_encoding_size(const struct ceph_object_locator *oloc) 61030c156d9SYan, Zheng { 61130c156d9SYan, Zheng return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0); 61230c156d9SYan, Zheng } 61330c156d9SYan, Zheng 6140d9c1ab3SIlya Dryomov static int __ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp, 6150d9c1ab3SIlya Dryomov int num_request_data_items, 6160d9c1ab3SIlya Dryomov int num_reply_data_items) 61713d1ad16SIlya Dryomov { 61813d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 61913d1ad16SIlya Dryomov struct ceph_msg *msg; 62013d1ad16SIlya Dryomov int msg_size; 6213d14c5d2SYehuda Sadeh 6220d9c1ab3SIlya Dryomov WARN_ON(req->r_request || req->r_reply); 623d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 62430c156d9SYan, Zheng WARN_ON(ceph_oloc_empty(&req->r_base_oloc)); 625d30291b9SIlya Dryomov 62613d1ad16SIlya Dryomov /* create request message */ 6278cb441c0SIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 6288cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 6298cb441c0SIlya Dryomov msg_size += 4 + 4 + 4; /* hash, osdmap_epoch, flags */ 6308cb441c0SIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 6318cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid); /* reqid */ 6328cb441c0SIlya Dryomov msg_size += sizeof(struct ceph_blkin_trace_info); /* trace */ 6338cb441c0SIlya Dryomov msg_size += 4 + sizeof(struct ceph_timespec); /* client_inc, mtime */ 63430c156d9SYan, Zheng msg_size += CEPH_ENCODING_START_BLK_LEN + 63530c156d9SYan, Zheng ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */ 63613d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 63713d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 638ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 639ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 64013d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 6418cb441c0SIlya Dryomov msg_size += 4 + 8; /* retry_attempt, features */ 642ae458f5aSIlya Dryomov 64313d1ad16SIlya Dryomov if (req->r_mempool) 6440d9c1ab3SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op, msg_size, 6450d9c1ab3SIlya Dryomov num_request_data_items); 6463d14c5d2SYehuda Sadeh else 6470d9c1ab3SIlya Dryomov msg = ceph_msg_new2(CEPH_MSG_OSD_OP, msg_size, 6480d9c1ab3SIlya Dryomov num_request_data_items, gfp, true); 64913d1ad16SIlya Dryomov if (!msg) 65013d1ad16SIlya Dryomov return -ENOMEM; 6513d14c5d2SYehuda Sadeh 6523d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 6533d14c5d2SYehuda Sadeh req->r_request = msg; 6543d14c5d2SYehuda Sadeh 65513d1ad16SIlya Dryomov /* create reply message */ 65613d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 657711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 658711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 65913d1ad16SIlya Dryomov 66013d1ad16SIlya Dryomov if (req->r_mempool) 6610d9c1ab3SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, msg_size, 6620d9c1ab3SIlya Dryomov num_reply_data_items); 66313d1ad16SIlya Dryomov else 6640d9c1ab3SIlya Dryomov msg = ceph_msg_new2(CEPH_MSG_OSD_OPREPLY, msg_size, 6650d9c1ab3SIlya Dryomov num_reply_data_items, gfp, true); 66613d1ad16SIlya Dryomov if (!msg) 66713d1ad16SIlya Dryomov return -ENOMEM; 66813d1ad16SIlya Dryomov 66913d1ad16SIlya Dryomov req->r_reply = msg; 67013d1ad16SIlya Dryomov 67113d1ad16SIlya Dryomov return 0; 67213d1ad16SIlya Dryomov } 6733d14c5d2SYehuda Sadeh 674a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 675a8dd0a37SAlex Elder { 676a8dd0a37SAlex Elder switch (opcode) { 67770b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 67870b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 67970b5bfa3SIlya Dryomov #undef GENERATE_CASE 680a8dd0a37SAlex Elder default: 681a8dd0a37SAlex Elder return false; 682a8dd0a37SAlex Elder } 683a8dd0a37SAlex Elder } 684a8dd0a37SAlex Elder 6850d9c1ab3SIlya Dryomov static void get_num_data_items(struct ceph_osd_request *req, 6860d9c1ab3SIlya Dryomov int *num_request_data_items, 6870d9c1ab3SIlya Dryomov int *num_reply_data_items) 6880d9c1ab3SIlya Dryomov { 6890d9c1ab3SIlya Dryomov struct ceph_osd_req_op *op; 6900d9c1ab3SIlya Dryomov 6910d9c1ab3SIlya Dryomov *num_request_data_items = 0; 6920d9c1ab3SIlya Dryomov *num_reply_data_items = 0; 6930d9c1ab3SIlya Dryomov 6940d9c1ab3SIlya Dryomov for (op = req->r_ops; op != &req->r_ops[req->r_num_ops]; op++) { 6950d9c1ab3SIlya Dryomov switch (op->op) { 6960d9c1ab3SIlya Dryomov /* request */ 6970d9c1ab3SIlya Dryomov case CEPH_OSD_OP_WRITE: 6980d9c1ab3SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 6990d9c1ab3SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 7000d9c1ab3SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 7010d9c1ab3SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 70278beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 7030d9c1ab3SIlya Dryomov *num_request_data_items += 1; 7040d9c1ab3SIlya Dryomov break; 7050d9c1ab3SIlya Dryomov 7060d9c1ab3SIlya Dryomov /* reply */ 7070d9c1ab3SIlya Dryomov case CEPH_OSD_OP_STAT: 7080d9c1ab3SIlya Dryomov case CEPH_OSD_OP_READ: 7090d9c1ab3SIlya Dryomov case CEPH_OSD_OP_LIST_WATCHERS: 7100d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 7110d9c1ab3SIlya Dryomov break; 7120d9c1ab3SIlya Dryomov 7130d9c1ab3SIlya Dryomov /* both */ 7140d9c1ab3SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 7150d9c1ab3SIlya Dryomov *num_request_data_items += 1; 7160d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 7170d9c1ab3SIlya Dryomov break; 7180d9c1ab3SIlya Dryomov case CEPH_OSD_OP_CALL: 7190d9c1ab3SIlya Dryomov *num_request_data_items += 2; 7200d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 7210d9c1ab3SIlya Dryomov break; 7220d9c1ab3SIlya Dryomov 7230d9c1ab3SIlya Dryomov default: 7240d9c1ab3SIlya Dryomov WARN_ON(!osd_req_opcode_valid(op->op)); 7250d9c1ab3SIlya Dryomov break; 7260d9c1ab3SIlya Dryomov } 7270d9c1ab3SIlya Dryomov } 7280d9c1ab3SIlya Dryomov } 7290d9c1ab3SIlya Dryomov 7300d9c1ab3SIlya Dryomov /* 7310d9c1ab3SIlya Dryomov * oid, oloc and OSD op opcode(s) must be filled in before this function 7320d9c1ab3SIlya Dryomov * is called. 7330d9c1ab3SIlya Dryomov */ 7340d9c1ab3SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 7350d9c1ab3SIlya Dryomov { 7360d9c1ab3SIlya Dryomov int num_request_data_items, num_reply_data_items; 7370d9c1ab3SIlya Dryomov 7380d9c1ab3SIlya Dryomov get_num_data_items(req, &num_request_data_items, &num_reply_data_items); 7390d9c1ab3SIlya Dryomov return __ceph_osdc_alloc_messages(req, gfp, num_request_data_items, 7400d9c1ab3SIlya Dryomov num_reply_data_items); 7410d9c1ab3SIlya Dryomov } 7420d9c1ab3SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 7430d9c1ab3SIlya Dryomov 74433803f33SAlex Elder /* 74533803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 74633803f33SAlex Elder * other information associated with them. It also serves as a 74733803f33SAlex Elder * common init routine for all the other init functions, below. 74833803f33SAlex Elder */ 749c99d2d4aSAlex Elder static struct ceph_osd_req_op * 75049719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 751144cba14SYan, Zheng u16 opcode, u32 flags) 75233803f33SAlex Elder { 753c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 754c99d2d4aSAlex Elder 755c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 75633803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 75733803f33SAlex Elder 758c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 75933803f33SAlex Elder memset(op, 0, sizeof (*op)); 76033803f33SAlex Elder op->op = opcode; 761144cba14SYan, Zheng op->flags = flags; 762c99d2d4aSAlex Elder 763c99d2d4aSAlex Elder return op; 76433803f33SAlex Elder } 76533803f33SAlex Elder 76649719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 767144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 76849719778SAlex Elder { 769144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 77049719778SAlex Elder } 77149719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 77249719778SAlex Elder 773c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 774c99d2d4aSAlex Elder unsigned int which, u16 opcode, 77533803f33SAlex Elder u64 offset, u64 length, 77633803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 77733803f33SAlex Elder { 778144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 779144cba14SYan, Zheng opcode, 0); 78033803f33SAlex Elder size_t payload_len = 0; 78133803f33SAlex Elder 782ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 783e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 784e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 78533803f33SAlex Elder 78633803f33SAlex Elder op->extent.offset = offset; 78733803f33SAlex Elder op->extent.length = length; 78833803f33SAlex Elder op->extent.truncate_size = truncate_size; 78933803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 790e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 79133803f33SAlex Elder payload_len += length; 79233803f33SAlex Elder 793de2aa102SIlya Dryomov op->indata_len = payload_len; 79433803f33SAlex Elder } 79533803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 79633803f33SAlex Elder 797c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 798c99d2d4aSAlex Elder unsigned int which, u64 length) 799e5975c7cSAlex Elder { 800c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 801c99d2d4aSAlex Elder u64 previous; 802c99d2d4aSAlex Elder 803c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 804c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 805c99d2d4aSAlex Elder previous = op->extent.length; 806e5975c7cSAlex Elder 807e5975c7cSAlex Elder if (length == previous) 808e5975c7cSAlex Elder return; /* Nothing to do */ 809e5975c7cSAlex Elder BUG_ON(length > previous); 810e5975c7cSAlex Elder 811e5975c7cSAlex Elder op->extent.length = length; 812d641df81SYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 813de2aa102SIlya Dryomov op->indata_len -= previous - length; 814e5975c7cSAlex Elder } 815e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 816e5975c7cSAlex Elder 8172c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 8182c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 8192c63f49aSYan, Zheng { 8202c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 8212c63f49aSYan, Zheng 8222c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 8232c63f49aSYan, Zheng 8242c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 8252c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 8262c63f49aSYan, Zheng /* dup previous one */ 8272c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 8282c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 8292c63f49aSYan, Zheng op->extent = prev_op->extent; 8302c63f49aSYan, Zheng /* adjust offset */ 8312c63f49aSYan, Zheng op->extent.offset += offset_inc; 8322c63f49aSYan, Zheng op->extent.length -= offset_inc; 8332c63f49aSYan, Zheng 8342c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 8352c63f49aSYan, Zheng op->indata_len -= offset_inc; 8362c63f49aSYan, Zheng } 8372c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 8382c63f49aSYan, Zheng 839fe943d50SChengguang Xu int osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 84024639ce5SIlya Dryomov const char *class, const char *method) 84133803f33SAlex Elder { 84224639ce5SIlya Dryomov struct ceph_osd_req_op *op; 8435f562df5SAlex Elder struct ceph_pagelist *pagelist; 84433803f33SAlex Elder size_t payload_len = 0; 84533803f33SAlex Elder size_t size; 8464766815bSDavid Disseldorp int ret; 84733803f33SAlex Elder 84824639ce5SIlya Dryomov op = _osd_req_op_init(osd_req, which, CEPH_OSD_OP_CALL, 0); 84933803f33SAlex Elder 85033165d47SIlya Dryomov pagelist = ceph_pagelist_alloc(GFP_NOFS); 851fe943d50SChengguang Xu if (!pagelist) 852fe943d50SChengguang Xu return -ENOMEM; 853fe943d50SChengguang Xu 85433803f33SAlex Elder op->cls.class_name = class; 85533803f33SAlex Elder size = strlen(class); 85633803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 85733803f33SAlex Elder op->cls.class_len = size; 8584766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, class, size); 8594766815bSDavid Disseldorp if (ret) 8604766815bSDavid Disseldorp goto err_pagelist_free; 86133803f33SAlex Elder payload_len += size; 86233803f33SAlex Elder 86333803f33SAlex Elder op->cls.method_name = method; 86433803f33SAlex Elder size = strlen(method); 86533803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 86633803f33SAlex Elder op->cls.method_len = size; 8674766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, method, size); 8684766815bSDavid Disseldorp if (ret) 8694766815bSDavid Disseldorp goto err_pagelist_free; 87033803f33SAlex Elder payload_len += size; 87133803f33SAlex Elder 872a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 873de2aa102SIlya Dryomov op->indata_len = payload_len; 874fe943d50SChengguang Xu return 0; 8754766815bSDavid Disseldorp 8764766815bSDavid Disseldorp err_pagelist_free: 8774766815bSDavid Disseldorp ceph_pagelist_release(pagelist); 8784766815bSDavid Disseldorp return ret; 87933803f33SAlex Elder } 88033803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 8818c042b0dSAlex Elder 882d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 883d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 884d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 885d74b50beSYan, Zheng { 886144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 887144cba14SYan, Zheng opcode, 0); 888d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 889d74b50beSYan, Zheng size_t payload_len; 8904766815bSDavid Disseldorp int ret; 891d74b50beSYan, Zheng 892d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 893d74b50beSYan, Zheng 89433165d47SIlya Dryomov pagelist = ceph_pagelist_alloc(GFP_NOFS); 895d74b50beSYan, Zheng if (!pagelist) 896d74b50beSYan, Zheng return -ENOMEM; 897d74b50beSYan, Zheng 898d74b50beSYan, Zheng payload_len = strlen(name); 899d74b50beSYan, Zheng op->xattr.name_len = payload_len; 9004766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, name, payload_len); 9014766815bSDavid Disseldorp if (ret) 9024766815bSDavid Disseldorp goto err_pagelist_free; 903d74b50beSYan, Zheng 904d74b50beSYan, Zheng op->xattr.value_len = size; 9054766815bSDavid Disseldorp ret = ceph_pagelist_append(pagelist, value, size); 9064766815bSDavid Disseldorp if (ret) 9074766815bSDavid Disseldorp goto err_pagelist_free; 908d74b50beSYan, Zheng payload_len += size; 909d74b50beSYan, Zheng 910d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 911d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 912d74b50beSYan, Zheng 913d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 914de2aa102SIlya Dryomov op->indata_len = payload_len; 915d74b50beSYan, Zheng return 0; 9164766815bSDavid Disseldorp 9174766815bSDavid Disseldorp err_pagelist_free: 9184766815bSDavid Disseldorp ceph_pagelist_release(pagelist); 9194766815bSDavid Disseldorp return ret; 920d74b50beSYan, Zheng } 921d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 922d74b50beSYan, Zheng 923922dab61SIlya Dryomov /* 924922dab61SIlya Dryomov * @watch_opcode: CEPH_OSD_WATCH_OP_* 925922dab61SIlya Dryomov */ 926922dab61SIlya Dryomov static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, 927922dab61SIlya Dryomov u64 cookie, u8 watch_opcode) 92833803f33SAlex Elder { 929922dab61SIlya Dryomov struct ceph_osd_req_op *op; 93033803f33SAlex Elder 931922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); 93233803f33SAlex Elder op->watch.cookie = cookie; 933922dab61SIlya Dryomov op->watch.op = watch_opcode; 934922dab61SIlya Dryomov op->watch.gen = 0; 93533803f33SAlex Elder } 93633803f33SAlex Elder 937d3798accSIlya Dryomov /* 938d3798accSIlya Dryomov * @flags: CEPH_OSD_OP_ALLOC_HINT_FLAG_* 939d3798accSIlya Dryomov */ 940c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 941c647b8a8SIlya Dryomov unsigned int which, 942c647b8a8SIlya Dryomov u64 expected_object_size, 943d3798accSIlya Dryomov u64 expected_write_size, 944d3798accSIlya Dryomov u32 flags) 945c647b8a8SIlya Dryomov { 946c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 947144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 948144cba14SYan, Zheng 0); 949c647b8a8SIlya Dryomov 950c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 951c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 952d3798accSIlya Dryomov op->alloc_hint.flags = flags; 953c647b8a8SIlya Dryomov 954c647b8a8SIlya Dryomov /* 955c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 956c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 957c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 958c647b8a8SIlya Dryomov */ 959c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 960c647b8a8SIlya Dryomov } 961c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 962c647b8a8SIlya Dryomov 96390af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 964ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 965ec9123c5SAlex Elder { 966ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 967ec9123c5SAlex Elder 968ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 969ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 970ec9123c5SAlex Elder if (length) 97190af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 972e8862740SIlya Dryomov length, osd_data->alignment, false); 973ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 974ec9123c5SAlex Elder BUG_ON(!length); 97590af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 976ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 977ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 9785359a17dSIlya Dryomov ceph_msg_data_add_bio(msg, &osd_data->bio_pos, length); 979ec9123c5SAlex Elder #endif 980b9e281c2SIlya Dryomov } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BVECS) { 981b9e281c2SIlya Dryomov ceph_msg_data_add_bvecs(msg, &osd_data->bvec_pos); 982ec9123c5SAlex Elder } else { 983ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 984ec9123c5SAlex Elder } 985ec9123c5SAlex Elder } 986ec9123c5SAlex Elder 987bb873b53SIlya Dryomov static u32 osd_req_encode_op(struct ceph_osd_op *dst, 988bb873b53SIlya Dryomov const struct ceph_osd_req_op *src) 9893d14c5d2SYehuda Sadeh { 990065a68f9SAlex Elder switch (src->op) { 991fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 992fbfab539SAlex Elder break; 9933d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 9943d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 995e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 996ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 997ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 998175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 999175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 10003d14c5d2SYehuda Sadeh dst->extent.truncate_size = 10013d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 10023d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 10033d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 10043d14c5d2SYehuda Sadeh break; 10053d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 10063d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 10073d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 1008bb873b53SIlya Dryomov dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 10093d14c5d2SYehuda Sadeh break; 1010a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 1011a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 1012922dab61SIlya Dryomov dst->watch.ver = cpu_to_le64(0); 1013922dab61SIlya Dryomov dst->watch.op = src->watch.op; 1014922dab61SIlya Dryomov dst->watch.gen = cpu_to_le32(src->watch.gen); 1015922dab61SIlya Dryomov break; 1016922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 1017a40c4f10SYehuda Sadeh break; 101819079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 101919079203SIlya Dryomov dst->notify.cookie = cpu_to_le64(src->notify.cookie); 102019079203SIlya Dryomov break; 1021a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 1022a4ed38d7SDouglas Fuller break; 1023c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 1024c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 1025c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 1026c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 1027c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 1028d3798accSIlya Dryomov dst->alloc_hint.flags = cpu_to_le32(src->alloc_hint.flags); 1029c647b8a8SIlya Dryomov break; 1030d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 1031d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 1032d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 1033d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 1034d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 1035d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 1036d74b50beSYan, Zheng break; 1037864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 1038864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 1039864e9197SYan, Zheng break; 104078beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 104123ddf9beSLuis Henriques dst->copy_from.snapid = cpu_to_le64(src->copy_from.snapid); 104223ddf9beSLuis Henriques dst->copy_from.src_version = 104323ddf9beSLuis Henriques cpu_to_le64(src->copy_from.src_version); 104423ddf9beSLuis Henriques dst->copy_from.flags = src->copy_from.flags; 104523ddf9beSLuis Henriques dst->copy_from.src_fadvise_flags = 104623ddf9beSLuis Henriques cpu_to_le32(src->copy_from.src_fadvise_flags); 104723ddf9beSLuis Henriques break; 10483d14c5d2SYehuda Sadeh default: 10494c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 10508f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 10514c46459cSAlex Elder WARN_ON(1); 1052a8dd0a37SAlex Elder 1053a8dd0a37SAlex Elder return 0; 10543d14c5d2SYehuda Sadeh } 10557b25bf5fSIlya Dryomov 1056a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 10577b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 1058de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 1059175face2SAlex Elder 1060bb873b53SIlya Dryomov return src->indata_len; 10613d14c5d2SYehuda Sadeh } 10623d14c5d2SYehuda Sadeh 10633d14c5d2SYehuda Sadeh /* 10643d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 10653d14c5d2SYehuda Sadeh * extent as needed. 10663d14c5d2SYehuda Sadeh * 10673d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 10683d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 10693d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 10703d14c5d2SYehuda Sadeh */ 10713d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 10723d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 10733d14c5d2SYehuda Sadeh struct ceph_vino vino, 1074715e4cd4SYan, Zheng u64 off, u64 *plen, 1075715e4cd4SYan, Zheng unsigned int which, int num_ops, 10763d14c5d2SYehuda Sadeh int opcode, int flags, 10773d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 10783d14c5d2SYehuda Sadeh u32 truncate_seq, 10793d14c5d2SYehuda Sadeh u64 truncate_size, 1080153e5167SAlex Elder bool use_mempool) 10813d14c5d2SYehuda Sadeh { 10823d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 108375d1c941SAlex Elder u64 objnum = 0; 108475d1c941SAlex Elder u64 objoff = 0; 108575d1c941SAlex Elder u64 objlen = 0; 10866816282dSSage Weil int r; 10873d14c5d2SYehuda Sadeh 1088ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 1089864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 1090864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 10913d14c5d2SYehuda Sadeh 1092acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 1093ae7ca4a3SAlex Elder GFP_NOFS); 109413d1ad16SIlya Dryomov if (!req) { 109513d1ad16SIlya Dryomov r = -ENOMEM; 109613d1ad16SIlya Dryomov goto fail; 109713d1ad16SIlya Dryomov } 109879528734SAlex Elder 10993d14c5d2SYehuda Sadeh /* calculate max write size */ 1100a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 110113d1ad16SIlya Dryomov if (r) 110213d1ad16SIlya Dryomov goto fail; 1103a19dadfbSAlex Elder 1104864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 1105144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 1106864e9197SYan, Zheng } else { 11077627151eSYan, Zheng u32 object_size = layout->object_size; 1108864e9197SYan, Zheng u32 object_base = off - objoff; 1109ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 1110d18d1e28SAlex Elder if (truncate_size <= object_base) { 1111d18d1e28SAlex Elder truncate_size = 0; 1112d18d1e28SAlex Elder } else { 1113d18d1e28SAlex Elder truncate_size -= object_base; 1114d18d1e28SAlex Elder if (truncate_size > object_size) 1115d18d1e28SAlex Elder truncate_size = object_size; 1116d18d1e28SAlex Elder } 1117ccca4e37SYan, Zheng } 1118715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 1119b0270324SAlex Elder truncate_size, truncate_seq); 1120864e9197SYan, Zheng } 1121d18d1e28SAlex Elder 11227627151eSYan, Zheng req->r_base_oloc.pool = layout->pool_id; 112330c156d9SYan, Zheng req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns); 1124d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 112522d2cfdfSIlya Dryomov req->r_flags = flags | osdc->client->options->read_from_replica; 1126dbe0fc41SAlex Elder 1127bb873b53SIlya Dryomov req->r_snapid = vino.snap; 1128bb873b53SIlya Dryomov if (flags & CEPH_OSD_FLAG_WRITE) 1129bb873b53SIlya Dryomov req->r_data_offset = off; 1130bb873b53SIlya Dryomov 11310d9c1ab3SIlya Dryomov if (num_ops > 1) 11320d9c1ab3SIlya Dryomov /* 11330d9c1ab3SIlya Dryomov * This is a special case for ceph_writepages_start(), but it 11340d9c1ab3SIlya Dryomov * also covers ceph_uninline_data(). If more multi-op request 11350d9c1ab3SIlya Dryomov * use cases emerge, we will need a separate helper. 11360d9c1ab3SIlya Dryomov */ 11370d9c1ab3SIlya Dryomov r = __ceph_osdc_alloc_messages(req, GFP_NOFS, num_ops, 0); 11380d9c1ab3SIlya Dryomov else 113913d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 114013d1ad16SIlya Dryomov if (r) 114113d1ad16SIlya Dryomov goto fail; 114213d1ad16SIlya Dryomov 11433d14c5d2SYehuda Sadeh return req; 114413d1ad16SIlya Dryomov 114513d1ad16SIlya Dryomov fail: 114613d1ad16SIlya Dryomov ceph_osdc_put_request(req); 114713d1ad16SIlya Dryomov return ERR_PTR(r); 11483d14c5d2SYehuda Sadeh } 11493d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 11503d14c5d2SYehuda Sadeh 11513d14c5d2SYehuda Sadeh /* 11523d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 11533d14c5d2SYehuda Sadeh */ 1154fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 11554609245eSIlya Dryomov DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) 11563d14c5d2SYehuda Sadeh 115766850df5SIlya Dryomov /* 115866850df5SIlya Dryomov * Call @fn on each OSD request as long as @fn returns 0. 115966850df5SIlya Dryomov */ 116066850df5SIlya Dryomov static void for_each_request(struct ceph_osd_client *osdc, 116166850df5SIlya Dryomov int (*fn)(struct ceph_osd_request *req, void *arg), 116266850df5SIlya Dryomov void *arg) 116366850df5SIlya Dryomov { 116466850df5SIlya Dryomov struct rb_node *n, *p; 116566850df5SIlya Dryomov 116666850df5SIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 116766850df5SIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 116866850df5SIlya Dryomov 116966850df5SIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 117066850df5SIlya Dryomov struct ceph_osd_request *req = 117166850df5SIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 117266850df5SIlya Dryomov 117366850df5SIlya Dryomov p = rb_next(p); 117466850df5SIlya Dryomov if (fn(req, arg)) 117566850df5SIlya Dryomov return; 117666850df5SIlya Dryomov } 117766850df5SIlya Dryomov } 117866850df5SIlya Dryomov 117966850df5SIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 118066850df5SIlya Dryomov struct ceph_osd_request *req = 118166850df5SIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 118266850df5SIlya Dryomov 118366850df5SIlya Dryomov p = rb_next(p); 118466850df5SIlya Dryomov if (fn(req, arg)) 118566850df5SIlya Dryomov return; 118666850df5SIlya Dryomov } 118766850df5SIlya Dryomov } 118866850df5SIlya Dryomov 11890247a0cfSIlya Dryomov static bool osd_homeless(struct ceph_osd *osd) 11900247a0cfSIlya Dryomov { 11910247a0cfSIlya Dryomov return osd->o_osd == CEPH_HOMELESS_OSD; 11920247a0cfSIlya Dryomov } 11930247a0cfSIlya Dryomov 11945aea3dcdSIlya Dryomov static bool osd_registered(struct ceph_osd *osd) 11953d14c5d2SYehuda Sadeh { 11965aea3dcdSIlya Dryomov verify_osdc_locked(osd->o_osdc); 11973d14c5d2SYehuda Sadeh 11985aea3dcdSIlya Dryomov return !RB_EMPTY_NODE(&osd->o_node); 11993d14c5d2SYehuda Sadeh } 12003d14c5d2SYehuda Sadeh 12013d14c5d2SYehuda Sadeh /* 12020247a0cfSIlya Dryomov * Assumes @osd is zero-initialized. 12030247a0cfSIlya Dryomov */ 12040247a0cfSIlya Dryomov static void osd_init(struct ceph_osd *osd) 12050247a0cfSIlya Dryomov { 120602113a0fSElena Reshetova refcount_set(&osd->o_ref, 1); 12070247a0cfSIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 12085aea3dcdSIlya Dryomov osd->o_requests = RB_ROOT; 1209922dab61SIlya Dryomov osd->o_linger_requests = RB_ROOT; 1210a02a946dSIlya Dryomov osd->o_backoff_mappings = RB_ROOT; 1211a02a946dSIlya Dryomov osd->o_backoffs_by_id = RB_ROOT; 12120247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_osd_lru); 12130247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_keepalive_item); 12140247a0cfSIlya Dryomov osd->o_incarnation = 1; 12155aea3dcdSIlya Dryomov mutex_init(&osd->lock); 12160247a0cfSIlya Dryomov } 12170247a0cfSIlya Dryomov 12180247a0cfSIlya Dryomov static void osd_cleanup(struct ceph_osd *osd) 12190247a0cfSIlya Dryomov { 12200247a0cfSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); 12215aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 1222922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 1223a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoff_mappings)); 1224a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoffs_by_id)); 12250247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_osd_lru)); 12260247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_keepalive_item)); 12270247a0cfSIlya Dryomov 12280247a0cfSIlya Dryomov if (osd->o_auth.authorizer) { 12290247a0cfSIlya Dryomov WARN_ON(osd_homeless(osd)); 12300247a0cfSIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 12310247a0cfSIlya Dryomov } 12320247a0cfSIlya Dryomov } 12330247a0cfSIlya Dryomov 12340247a0cfSIlya Dryomov /* 12353d14c5d2SYehuda Sadeh * Track open sessions with osds. 12363d14c5d2SYehuda Sadeh */ 1237e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 12383d14c5d2SYehuda Sadeh { 12393d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12403d14c5d2SYehuda Sadeh 12410247a0cfSIlya Dryomov WARN_ON(onum == CEPH_HOMELESS_OSD); 12420247a0cfSIlya Dryomov 12437a28f59bSIlya Dryomov osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); 12440247a0cfSIlya Dryomov osd_init(osd); 12453d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1246e10006f8SAlex Elder osd->o_osd = onum; 12473d14c5d2SYehuda Sadeh 1248b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 12493d14c5d2SYehuda Sadeh 12503d14c5d2SYehuda Sadeh return osd; 12513d14c5d2SYehuda Sadeh } 12523d14c5d2SYehuda Sadeh 12533d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 12543d14c5d2SYehuda Sadeh { 125502113a0fSElena Reshetova if (refcount_inc_not_zero(&osd->o_ref)) { 125602113a0fSElena Reshetova dout("get_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref)-1, 125702113a0fSElena Reshetova refcount_read(&osd->o_ref)); 12583d14c5d2SYehuda Sadeh return osd; 12593d14c5d2SYehuda Sadeh } else { 12603d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 12613d14c5d2SYehuda Sadeh return NULL; 12623d14c5d2SYehuda Sadeh } 12633d14c5d2SYehuda Sadeh } 12643d14c5d2SYehuda Sadeh 12653d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 12663d14c5d2SYehuda Sadeh { 126702113a0fSElena Reshetova dout("put_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref), 126802113a0fSElena Reshetova refcount_read(&osd->o_ref) - 1); 126902113a0fSElena Reshetova if (refcount_dec_and_test(&osd->o_ref)) { 12700247a0cfSIlya Dryomov osd_cleanup(osd); 12713d14c5d2SYehuda Sadeh kfree(osd); 12723d14c5d2SYehuda Sadeh } 12733d14c5d2SYehuda Sadeh } 12743d14c5d2SYehuda Sadeh 1275fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1276fcd00b68SIlya Dryomov 12779dd2845cSIlya Dryomov static void __move_osd_to_lru(struct ceph_osd *osd) 12783d14c5d2SYehuda Sadeh { 12799dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 12809dd2845cSIlya Dryomov 12819dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 12823d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1283bbf37ec3SIlya Dryomov 12849dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 12853d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 12869dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 12879dd2845cSIlya Dryomov 1288a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 12893d14c5d2SYehuda Sadeh } 12903d14c5d2SYehuda Sadeh 12919dd2845cSIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd *osd) 1292bbf37ec3SIlya Dryomov { 12935aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1294922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) 12959dd2845cSIlya Dryomov __move_osd_to_lru(osd); 1296bbf37ec3SIlya Dryomov } 1297bbf37ec3SIlya Dryomov 12983d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 12993d14c5d2SYehuda Sadeh { 13009dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 13019dd2845cSIlya Dryomov 13029dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 13039dd2845cSIlya Dryomov 13049dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 13053d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 13063d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 13079dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 13083d14c5d2SYehuda Sadeh } 13093d14c5d2SYehuda Sadeh 13103d14c5d2SYehuda Sadeh /* 13115aea3dcdSIlya Dryomov * Close the connection and assign any leftover requests to the 13125aea3dcdSIlya Dryomov * homeless session. 13135aea3dcdSIlya Dryomov */ 13145aea3dcdSIlya Dryomov static void close_osd(struct ceph_osd *osd) 13155aea3dcdSIlya Dryomov { 13165aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 13175aea3dcdSIlya Dryomov struct rb_node *n; 13185aea3dcdSIlya Dryomov 13195aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 13205aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 13215aea3dcdSIlya Dryomov 13225aea3dcdSIlya Dryomov ceph_con_close(&osd->o_con); 13235aea3dcdSIlya Dryomov 13245aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 13255aea3dcdSIlya Dryomov struct ceph_osd_request *req = 13265aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 13275aea3dcdSIlya Dryomov 13285aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 13295aea3dcdSIlya Dryomov 13305aea3dcdSIlya Dryomov dout(" reassigning req %p tid %llu\n", req, req->r_tid); 13315aea3dcdSIlya Dryomov unlink_request(osd, req); 13325aea3dcdSIlya Dryomov link_request(&osdc->homeless_osd, req); 13335aea3dcdSIlya Dryomov } 1334922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 1335922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1336922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 1337922dab61SIlya Dryomov 1338922dab61SIlya Dryomov n = rb_next(n); /* unlink_linger() */ 1339922dab61SIlya Dryomov 1340922dab61SIlya Dryomov dout(" reassigning lreq %p linger_id %llu\n", lreq, 1341922dab61SIlya Dryomov lreq->linger_id); 1342922dab61SIlya Dryomov unlink_linger(osd, lreq); 1343922dab61SIlya Dryomov link_linger(&osdc->homeless_osd, lreq); 1344922dab61SIlya Dryomov } 1345a02a946dSIlya Dryomov clear_backoffs(osd); 13465aea3dcdSIlya Dryomov 13475aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 13485aea3dcdSIlya Dryomov erase_osd(&osdc->osds, osd); 13495aea3dcdSIlya Dryomov put_osd(osd); 13505aea3dcdSIlya Dryomov } 13515aea3dcdSIlya Dryomov 13525aea3dcdSIlya Dryomov /* 13533d14c5d2SYehuda Sadeh * reset osd connect 13543d14c5d2SYehuda Sadeh */ 13555aea3dcdSIlya Dryomov static int reopen_osd(struct ceph_osd *osd) 13563d14c5d2SYehuda Sadeh { 1357c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 13583d14c5d2SYehuda Sadeh 13595aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 13605aea3dcdSIlya Dryomov 13615aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1362922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) { 13635aea3dcdSIlya Dryomov close_osd(osd); 1364c3acb181SAlex Elder return -ENODEV; 1365c3acb181SAlex Elder } 1366c3acb181SAlex Elder 13675aea3dcdSIlya Dryomov peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; 1368c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 13693d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 13705aea3dcdSIlya Dryomov struct rb_node *n; 1371c3acb181SAlex Elder 13723d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 13730b4af2e8SIlya Dryomov "letting msgr retry\n"); 13743d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 13755aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 13765aea3dcdSIlya Dryomov struct ceph_osd_request *req = 13775aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 13783d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 13795aea3dcdSIlya Dryomov } 1380c3acb181SAlex Elder 1381c3acb181SAlex Elder return -EAGAIN; 13823d14c5d2SYehuda Sadeh } 1383c3acb181SAlex Elder 1384c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1385c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1386c3acb181SAlex Elder osd->o_incarnation++; 1387c3acb181SAlex Elder 1388c3acb181SAlex Elder return 0; 13893d14c5d2SYehuda Sadeh } 13903d14c5d2SYehuda Sadeh 13915aea3dcdSIlya Dryomov static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, 13925aea3dcdSIlya Dryomov bool wrlocked) 13933d14c5d2SYehuda Sadeh { 13945aea3dcdSIlya Dryomov struct ceph_osd *osd; 13955aea3dcdSIlya Dryomov 13965aea3dcdSIlya Dryomov if (wrlocked) 13975aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 13985aea3dcdSIlya Dryomov else 13995aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 14005aea3dcdSIlya Dryomov 14015aea3dcdSIlya Dryomov if (o != CEPH_HOMELESS_OSD) 14025aea3dcdSIlya Dryomov osd = lookup_osd(&osdc->osds, o); 14035aea3dcdSIlya Dryomov else 14045aea3dcdSIlya Dryomov osd = &osdc->homeless_osd; 14055aea3dcdSIlya Dryomov if (!osd) { 14065aea3dcdSIlya Dryomov if (!wrlocked) 14075aea3dcdSIlya Dryomov return ERR_PTR(-EAGAIN); 14085aea3dcdSIlya Dryomov 14095aea3dcdSIlya Dryomov osd = create_osd(osdc, o); 14105aea3dcdSIlya Dryomov insert_osd(&osdc->osds, osd); 14115aea3dcdSIlya Dryomov ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, 14125aea3dcdSIlya Dryomov &osdc->osdmap->osd_addr[osd->o_osd]); 14135aea3dcdSIlya Dryomov } 14145aea3dcdSIlya Dryomov 14155aea3dcdSIlya Dryomov dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); 14165aea3dcdSIlya Dryomov return osd; 1417a40c4f10SYehuda Sadeh } 1418a40c4f10SYehuda Sadeh 14193d14c5d2SYehuda Sadeh /* 14205aea3dcdSIlya Dryomov * Create request <-> OSD session relation. 14215aea3dcdSIlya Dryomov * 14225aea3dcdSIlya Dryomov * @req has to be assigned a tid, @osd may be homeless. 14233d14c5d2SYehuda Sadeh */ 14245aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) 14253d14c5d2SYehuda Sadeh { 14265aea3dcdSIlya Dryomov verify_osd_locked(osd); 14275aea3dcdSIlya Dryomov WARN_ON(!req->r_tid || req->r_osd); 14285aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 142935f9f8a0SSage Weil req, req->r_tid); 14305aea3dcdSIlya Dryomov 14315aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 14325aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 14335aea3dcdSIlya Dryomov else 14345aea3dcdSIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 14355aea3dcdSIlya Dryomov 14365aea3dcdSIlya Dryomov get_osd(osd); 14375aea3dcdSIlya Dryomov insert_request(&osd->o_requests, req); 14385aea3dcdSIlya Dryomov req->r_osd = osd; 143935f9f8a0SSage Weil } 144035f9f8a0SSage Weil 14415aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) 14423d14c5d2SYehuda Sadeh { 14435aea3dcdSIlya Dryomov verify_osd_locked(osd); 14445aea3dcdSIlya Dryomov WARN_ON(req->r_osd != osd); 14455aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 14465aea3dcdSIlya Dryomov req, req->r_tid); 14475aea3dcdSIlya Dryomov 14485aea3dcdSIlya Dryomov req->r_osd = NULL; 14495aea3dcdSIlya Dryomov erase_request(&osd->o_requests, req); 14505aea3dcdSIlya Dryomov put_osd(osd); 14515aea3dcdSIlya Dryomov 14525aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 14535aea3dcdSIlya Dryomov maybe_move_osd_to_lru(osd); 14545aea3dcdSIlya Dryomov else 14555aea3dcdSIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 14563d14c5d2SYehuda Sadeh } 14573d14c5d2SYehuda Sadeh 145863244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 145963244fa1SIlya Dryomov { 146063244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 146163244fa1SIlya Dryomov } 146263244fa1SIlya Dryomov 146342c1b124SIlya Dryomov static bool have_pool_full(struct ceph_osd_client *osdc) 146442c1b124SIlya Dryomov { 146542c1b124SIlya Dryomov struct rb_node *n; 146642c1b124SIlya Dryomov 146742c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 146842c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 146942c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 147042c1b124SIlya Dryomov 147142c1b124SIlya Dryomov if (__pool_full(pi)) 147242c1b124SIlya Dryomov return true; 147342c1b124SIlya Dryomov } 147442c1b124SIlya Dryomov 147542c1b124SIlya Dryomov return false; 147642c1b124SIlya Dryomov } 147742c1b124SIlya Dryomov 14785aea3dcdSIlya Dryomov static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) 14795aea3dcdSIlya Dryomov { 14805aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 14815aea3dcdSIlya Dryomov 14825aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 14835aea3dcdSIlya Dryomov if (!pi) 14845aea3dcdSIlya Dryomov return false; 14855aea3dcdSIlya Dryomov 14865aea3dcdSIlya Dryomov return __pool_full(pi); 14875aea3dcdSIlya Dryomov } 14885aea3dcdSIlya Dryomov 14893d14c5d2SYehuda Sadeh /* 1490d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1491d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1492d29adb34SJosh Durgin */ 149363244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 149463244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 149563244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 149663244fa1SIlya Dryomov { 1497b7ec35b3SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 1498b7ec35b3SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 1499b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 150063244fa1SIlya Dryomov __pool_full(pi); 150163244fa1SIlya Dryomov 15026d637a54SIlya Dryomov WARN_ON(pi->id != t->target_oloc.pool); 150358eb7932SJeff Layton return ((t->flags & CEPH_OSD_FLAG_READ) && pauserd) || 150458eb7932SJeff Layton ((t->flags & CEPH_OSD_FLAG_WRITE) && pausewr) || 150558eb7932SJeff Layton (osdc->osdmap->epoch < osdc->epoch_barrier); 150663244fa1SIlya Dryomov } 150763244fa1SIlya Dryomov 1508117d96a0SIlya Dryomov static int pick_random_replica(const struct ceph_osds *acting) 1509117d96a0SIlya Dryomov { 1510117d96a0SIlya Dryomov int i = prandom_u32() % acting->size; 1511117d96a0SIlya Dryomov 1512117d96a0SIlya Dryomov dout("%s picked osd%d, primary osd%d\n", __func__, 1513117d96a0SIlya Dryomov acting->osds[i], acting->primary); 1514117d96a0SIlya Dryomov return i; 1515117d96a0SIlya Dryomov } 1516117d96a0SIlya Dryomov 1517117d96a0SIlya Dryomov /* 1518117d96a0SIlya Dryomov * Picks the closest replica based on client's location given by 1519117d96a0SIlya Dryomov * crush_location option. Prefers the primary if the locality is 1520117d96a0SIlya Dryomov * the same. 1521117d96a0SIlya Dryomov */ 1522117d96a0SIlya Dryomov static int pick_closest_replica(struct ceph_osd_client *osdc, 1523117d96a0SIlya Dryomov const struct ceph_osds *acting) 1524117d96a0SIlya Dryomov { 1525117d96a0SIlya Dryomov struct ceph_options *opt = osdc->client->options; 1526117d96a0SIlya Dryomov int best_i, best_locality; 1527117d96a0SIlya Dryomov int i = 0, locality; 1528117d96a0SIlya Dryomov 1529117d96a0SIlya Dryomov do { 1530117d96a0SIlya Dryomov locality = ceph_get_crush_locality(osdc->osdmap, 1531117d96a0SIlya Dryomov acting->osds[i], 1532117d96a0SIlya Dryomov &opt->crush_locs); 1533117d96a0SIlya Dryomov if (i == 0 || 1534117d96a0SIlya Dryomov (locality >= 0 && best_locality < 0) || 1535117d96a0SIlya Dryomov (locality >= 0 && best_locality >= 0 && 1536117d96a0SIlya Dryomov locality < best_locality)) { 1537117d96a0SIlya Dryomov best_i = i; 1538117d96a0SIlya Dryomov best_locality = locality; 1539117d96a0SIlya Dryomov } 1540117d96a0SIlya Dryomov } while (++i < acting->size); 1541117d96a0SIlya Dryomov 1542117d96a0SIlya Dryomov dout("%s picked osd%d with locality %d, primary osd%d\n", __func__, 1543117d96a0SIlya Dryomov acting->osds[best_i], best_locality, acting->primary); 1544117d96a0SIlya Dryomov return best_i; 1545117d96a0SIlya Dryomov } 1546117d96a0SIlya Dryomov 154763244fa1SIlya Dryomov enum calc_target_result { 154863244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 154963244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 155063244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 155163244fa1SIlya Dryomov }; 155263244fa1SIlya Dryomov 155363244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 155463244fa1SIlya Dryomov struct ceph_osd_request_target *t, 155563244fa1SIlya Dryomov bool any_change) 155663244fa1SIlya Dryomov { 155763244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 155863244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 155963244fa1SIlya Dryomov struct ceph_osds up, acting; 1560117d96a0SIlya Dryomov bool is_read = t->flags & CEPH_OSD_FLAG_READ; 1561117d96a0SIlya Dryomov bool is_write = t->flags & CEPH_OSD_FLAG_WRITE; 156263244fa1SIlya Dryomov bool force_resend = false; 156384ed45dfSIlya Dryomov bool unpaused = false; 1564a5613724SIlya Dryomov bool legacy_change = false; 15657de030d6SIlya Dryomov bool split = false; 1566b7ec35b3SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); 1567ae78dd81SIlya Dryomov bool recovery_deletes = ceph_osdmap_flag(osdc, 1568ae78dd81SIlya Dryomov CEPH_OSDMAP_RECOVERY_DELETES); 156963244fa1SIlya Dryomov enum calc_target_result ct_res; 157063244fa1SIlya Dryomov 157104c7d789SIlya Dryomov t->epoch = osdc->osdmap->epoch; 157263244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 157363244fa1SIlya Dryomov if (!pi) { 157463244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 157563244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 157663244fa1SIlya Dryomov goto out; 157763244fa1SIlya Dryomov } 157863244fa1SIlya Dryomov 157963244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 1580dc93e0e2SIlya Dryomov if (t->last_force_resend < pi->last_force_request_resend) { 1581dc93e0e2SIlya Dryomov t->last_force_resend = pi->last_force_request_resend; 158263244fa1SIlya Dryomov force_resend = true; 1583dc93e0e2SIlya Dryomov } else if (t->last_force_resend == 0) { 158463244fa1SIlya Dryomov force_resend = true; 158563244fa1SIlya Dryomov } 158663244fa1SIlya Dryomov } 158763244fa1SIlya Dryomov 1588db098ec4SIlya Dryomov /* apply tiering */ 1589db098ec4SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 1590db098ec4SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 1591db098ec4SIlya Dryomov if ((t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 1592117d96a0SIlya Dryomov if (is_read && pi->read_tier >= 0) 159363244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 1594117d96a0SIlya Dryomov if (is_write && pi->write_tier >= 0) 159563244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 15966d637a54SIlya Dryomov 15976d637a54SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->target_oloc.pool); 15986d637a54SIlya Dryomov if (!pi) { 15996d637a54SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 16006d637a54SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 16016d637a54SIlya Dryomov goto out; 16026d637a54SIlya Dryomov } 160363244fa1SIlya Dryomov } 160463244fa1SIlya Dryomov 1605a86f009fSIlya Dryomov __ceph_object_locator_to_pg(pi, &t->target_oid, &t->target_oloc, &pgid); 160663244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 160763244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 160863244fa1SIlya Dryomov 1609df28152dSIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, pi, &pgid, &up, &acting); 161063244fa1SIlya Dryomov if (any_change && 161163244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 161263244fa1SIlya Dryomov &acting, 161363244fa1SIlya Dryomov &t->up, 161463244fa1SIlya Dryomov &up, 161563244fa1SIlya Dryomov t->size, 161663244fa1SIlya Dryomov pi->size, 161763244fa1SIlya Dryomov t->min_size, 161863244fa1SIlya Dryomov pi->min_size, 161963244fa1SIlya Dryomov t->pg_num, 162063244fa1SIlya Dryomov pi->pg_num, 162163244fa1SIlya Dryomov t->sort_bitwise, 162263244fa1SIlya Dryomov sort_bitwise, 1623ae78dd81SIlya Dryomov t->recovery_deletes, 1624ae78dd81SIlya Dryomov recovery_deletes, 162563244fa1SIlya Dryomov &last_pgid)) 162663244fa1SIlya Dryomov force_resend = true; 162763244fa1SIlya Dryomov 162863244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 162963244fa1SIlya Dryomov t->paused = false; 163084ed45dfSIlya Dryomov unpaused = true; 163163244fa1SIlya Dryomov } 163284ed45dfSIlya Dryomov legacy_change = ceph_pg_compare(&t->pgid, &pgid) || 1633117d96a0SIlya Dryomov ceph_osds_changed(&t->acting, &acting, 1634117d96a0SIlya Dryomov t->used_replica || any_change); 16357de030d6SIlya Dryomov if (t->pg_num) 16367de030d6SIlya Dryomov split = ceph_pg_is_split(&last_pgid, t->pg_num, pi->pg_num); 163763244fa1SIlya Dryomov 16387de030d6SIlya Dryomov if (legacy_change || force_resend || split) { 163963244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 1640df28152dSIlya Dryomov ceph_pg_to_primary_shard(osdc->osdmap, pi, &pgid, &t->spgid); 164163244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 164263244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 164363244fa1SIlya Dryomov t->size = pi->size; 164463244fa1SIlya Dryomov t->min_size = pi->min_size; 164563244fa1SIlya Dryomov t->pg_num = pi->pg_num; 164663244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 164763244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 1648ae78dd81SIlya Dryomov t->recovery_deletes = recovery_deletes; 164963244fa1SIlya Dryomov 1650117d96a0SIlya Dryomov if ((t->flags & (CEPH_OSD_FLAG_BALANCE_READS | 1651117d96a0SIlya Dryomov CEPH_OSD_FLAG_LOCALIZE_READS)) && 1652117d96a0SIlya Dryomov !is_write && pi->type == CEPH_POOL_TYPE_REP && 1653117d96a0SIlya Dryomov acting.size > 1) { 1654117d96a0SIlya Dryomov int pos; 1655117d96a0SIlya Dryomov 1656117d96a0SIlya Dryomov WARN_ON(!is_read || acting.osds[0] != acting.primary); 1657117d96a0SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_BALANCE_READS) { 1658117d96a0SIlya Dryomov pos = pick_random_replica(&acting); 1659117d96a0SIlya Dryomov } else { 1660117d96a0SIlya Dryomov pos = pick_closest_replica(osdc, &acting); 1661117d96a0SIlya Dryomov } 1662117d96a0SIlya Dryomov t->osd = acting.osds[pos]; 1663117d96a0SIlya Dryomov t->used_replica = pos > 0; 1664117d96a0SIlya Dryomov } else { 166563244fa1SIlya Dryomov t->osd = acting.primary; 1666117d96a0SIlya Dryomov t->used_replica = false; 1667117d96a0SIlya Dryomov } 166863244fa1SIlya Dryomov } 166963244fa1SIlya Dryomov 1670a5613724SIlya Dryomov if (unpaused || legacy_change || force_resend || split) 167184ed45dfSIlya Dryomov ct_res = CALC_TARGET_NEED_RESEND; 167284ed45dfSIlya Dryomov else 167384ed45dfSIlya Dryomov ct_res = CALC_TARGET_NO_ACTION; 167484ed45dfSIlya Dryomov 167563244fa1SIlya Dryomov out: 1676a5613724SIlya Dryomov dout("%s t %p -> %d%d%d%d ct_res %d osd%d\n", __func__, t, unpaused, 1677a5613724SIlya Dryomov legacy_change, force_resend, split, ct_res, t->osd); 167863244fa1SIlya Dryomov return ct_res; 167963244fa1SIlya Dryomov } 168063244fa1SIlya Dryomov 1681a02a946dSIlya Dryomov static struct ceph_spg_mapping *alloc_spg_mapping(void) 1682a02a946dSIlya Dryomov { 1683a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1684a02a946dSIlya Dryomov 1685a02a946dSIlya Dryomov spg = kmalloc(sizeof(*spg), GFP_NOIO); 1686a02a946dSIlya Dryomov if (!spg) 1687a02a946dSIlya Dryomov return NULL; 1688a02a946dSIlya Dryomov 1689a02a946dSIlya Dryomov RB_CLEAR_NODE(&spg->node); 1690a02a946dSIlya Dryomov spg->backoffs = RB_ROOT; 1691a02a946dSIlya Dryomov return spg; 1692a02a946dSIlya Dryomov } 1693a02a946dSIlya Dryomov 1694a02a946dSIlya Dryomov static void free_spg_mapping(struct ceph_spg_mapping *spg) 1695a02a946dSIlya Dryomov { 1696a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&spg->node)); 1697a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&spg->backoffs)); 1698a02a946dSIlya Dryomov 1699a02a946dSIlya Dryomov kfree(spg); 1700a02a946dSIlya Dryomov } 1701a02a946dSIlya Dryomov 1702a02a946dSIlya Dryomov /* 1703a02a946dSIlya Dryomov * rbtree of ceph_spg_mapping for handling map<spg_t, ...>, similar to 1704a02a946dSIlya Dryomov * ceph_pg_mapping. Used to track OSD backoffs -- a backoff [range] is 1705a02a946dSIlya Dryomov * defined only within a specific spgid; it does not pass anything to 1706a02a946dSIlya Dryomov * children on split, or to another primary. 1707a02a946dSIlya Dryomov */ 1708a02a946dSIlya Dryomov DEFINE_RB_FUNCS2(spg_mapping, struct ceph_spg_mapping, spgid, ceph_spg_compare, 1709a02a946dSIlya Dryomov RB_BYPTR, const struct ceph_spg *, node) 1710a02a946dSIlya Dryomov 1711a02a946dSIlya Dryomov static u64 hoid_get_bitwise_key(const struct ceph_hobject_id *hoid) 1712a02a946dSIlya Dryomov { 1713a02a946dSIlya Dryomov return hoid->is_max ? 0x100000000ull : hoid->hash_reverse_bits; 1714a02a946dSIlya Dryomov } 1715a02a946dSIlya Dryomov 1716a02a946dSIlya Dryomov static void hoid_get_effective_key(const struct ceph_hobject_id *hoid, 1717a02a946dSIlya Dryomov void **pkey, size_t *pkey_len) 1718a02a946dSIlya Dryomov { 1719a02a946dSIlya Dryomov if (hoid->key_len) { 1720a02a946dSIlya Dryomov *pkey = hoid->key; 1721a02a946dSIlya Dryomov *pkey_len = hoid->key_len; 1722a02a946dSIlya Dryomov } else { 1723a02a946dSIlya Dryomov *pkey = hoid->oid; 1724a02a946dSIlya Dryomov *pkey_len = hoid->oid_len; 1725a02a946dSIlya Dryomov } 1726a02a946dSIlya Dryomov } 1727a02a946dSIlya Dryomov 1728a02a946dSIlya Dryomov static int compare_names(const void *name1, size_t name1_len, 1729a02a946dSIlya Dryomov const void *name2, size_t name2_len) 1730a02a946dSIlya Dryomov { 1731a02a946dSIlya Dryomov int ret; 1732a02a946dSIlya Dryomov 1733a02a946dSIlya Dryomov ret = memcmp(name1, name2, min(name1_len, name2_len)); 1734a02a946dSIlya Dryomov if (!ret) { 1735a02a946dSIlya Dryomov if (name1_len < name2_len) 1736a02a946dSIlya Dryomov ret = -1; 1737a02a946dSIlya Dryomov else if (name1_len > name2_len) 1738a02a946dSIlya Dryomov ret = 1; 1739a02a946dSIlya Dryomov } 1740a02a946dSIlya Dryomov return ret; 1741a02a946dSIlya Dryomov } 1742a02a946dSIlya Dryomov 1743a02a946dSIlya Dryomov static int hoid_compare(const struct ceph_hobject_id *lhs, 1744a02a946dSIlya Dryomov const struct ceph_hobject_id *rhs) 1745a02a946dSIlya Dryomov { 1746a02a946dSIlya Dryomov void *effective_key1, *effective_key2; 1747a02a946dSIlya Dryomov size_t effective_key1_len, effective_key2_len; 1748a02a946dSIlya Dryomov int ret; 1749a02a946dSIlya Dryomov 1750a02a946dSIlya Dryomov if (lhs->is_max < rhs->is_max) 1751a02a946dSIlya Dryomov return -1; 1752a02a946dSIlya Dryomov if (lhs->is_max > rhs->is_max) 1753a02a946dSIlya Dryomov return 1; 1754a02a946dSIlya Dryomov 1755a02a946dSIlya Dryomov if (lhs->pool < rhs->pool) 1756a02a946dSIlya Dryomov return -1; 1757a02a946dSIlya Dryomov if (lhs->pool > rhs->pool) 1758a02a946dSIlya Dryomov return 1; 1759a02a946dSIlya Dryomov 1760a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) < hoid_get_bitwise_key(rhs)) 1761a02a946dSIlya Dryomov return -1; 1762a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) > hoid_get_bitwise_key(rhs)) 1763a02a946dSIlya Dryomov return 1; 1764a02a946dSIlya Dryomov 1765a02a946dSIlya Dryomov ret = compare_names(lhs->nspace, lhs->nspace_len, 1766a02a946dSIlya Dryomov rhs->nspace, rhs->nspace_len); 1767a02a946dSIlya Dryomov if (ret) 1768a02a946dSIlya Dryomov return ret; 1769a02a946dSIlya Dryomov 1770a02a946dSIlya Dryomov hoid_get_effective_key(lhs, &effective_key1, &effective_key1_len); 1771a02a946dSIlya Dryomov hoid_get_effective_key(rhs, &effective_key2, &effective_key2_len); 1772a02a946dSIlya Dryomov ret = compare_names(effective_key1, effective_key1_len, 1773a02a946dSIlya Dryomov effective_key2, effective_key2_len); 1774a02a946dSIlya Dryomov if (ret) 1775a02a946dSIlya Dryomov return ret; 1776a02a946dSIlya Dryomov 1777a02a946dSIlya Dryomov ret = compare_names(lhs->oid, lhs->oid_len, rhs->oid, rhs->oid_len); 1778a02a946dSIlya Dryomov if (ret) 1779a02a946dSIlya Dryomov return ret; 1780a02a946dSIlya Dryomov 1781a02a946dSIlya Dryomov if (lhs->snapid < rhs->snapid) 1782a02a946dSIlya Dryomov return -1; 1783a02a946dSIlya Dryomov if (lhs->snapid > rhs->snapid) 1784a02a946dSIlya Dryomov return 1; 1785a02a946dSIlya Dryomov 1786a02a946dSIlya Dryomov return 0; 1787a02a946dSIlya Dryomov } 1788a02a946dSIlya Dryomov 1789a02a946dSIlya Dryomov /* 1790a02a946dSIlya Dryomov * For decoding ->begin and ->end of MOSDBackoff only -- no MIN/MAX 1791a02a946dSIlya Dryomov * compat stuff here. 1792a02a946dSIlya Dryomov * 1793a02a946dSIlya Dryomov * Assumes @hoid is zero-initialized. 1794a02a946dSIlya Dryomov */ 1795a02a946dSIlya Dryomov static int decode_hoid(void **p, void *end, struct ceph_hobject_id *hoid) 1796a02a946dSIlya Dryomov { 1797a02a946dSIlya Dryomov u8 struct_v; 1798a02a946dSIlya Dryomov u32 struct_len; 1799a02a946dSIlya Dryomov int ret; 1800a02a946dSIlya Dryomov 1801a02a946dSIlya Dryomov ret = ceph_start_decoding(p, end, 4, "hobject_t", &struct_v, 1802a02a946dSIlya Dryomov &struct_len); 1803a02a946dSIlya Dryomov if (ret) 1804a02a946dSIlya Dryomov return ret; 1805a02a946dSIlya Dryomov 1806a02a946dSIlya Dryomov if (struct_v < 4) { 1807a02a946dSIlya Dryomov pr_err("got struct_v %d < 4 of hobject_t\n", struct_v); 1808a02a946dSIlya Dryomov goto e_inval; 1809a02a946dSIlya Dryomov } 1810a02a946dSIlya Dryomov 1811a02a946dSIlya Dryomov hoid->key = ceph_extract_encoded_string(p, end, &hoid->key_len, 1812a02a946dSIlya Dryomov GFP_NOIO); 1813a02a946dSIlya Dryomov if (IS_ERR(hoid->key)) { 1814a02a946dSIlya Dryomov ret = PTR_ERR(hoid->key); 1815a02a946dSIlya Dryomov hoid->key = NULL; 1816a02a946dSIlya Dryomov return ret; 1817a02a946dSIlya Dryomov } 1818a02a946dSIlya Dryomov 1819a02a946dSIlya Dryomov hoid->oid = ceph_extract_encoded_string(p, end, &hoid->oid_len, 1820a02a946dSIlya Dryomov GFP_NOIO); 1821a02a946dSIlya Dryomov if (IS_ERR(hoid->oid)) { 1822a02a946dSIlya Dryomov ret = PTR_ERR(hoid->oid); 1823a02a946dSIlya Dryomov hoid->oid = NULL; 1824a02a946dSIlya Dryomov return ret; 1825a02a946dSIlya Dryomov } 1826a02a946dSIlya Dryomov 1827a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->snapid, e_inval); 1828a02a946dSIlya Dryomov ceph_decode_32_safe(p, end, hoid->hash, e_inval); 1829a02a946dSIlya Dryomov ceph_decode_8_safe(p, end, hoid->is_max, e_inval); 1830a02a946dSIlya Dryomov 1831a02a946dSIlya Dryomov hoid->nspace = ceph_extract_encoded_string(p, end, &hoid->nspace_len, 1832a02a946dSIlya Dryomov GFP_NOIO); 1833a02a946dSIlya Dryomov if (IS_ERR(hoid->nspace)) { 1834a02a946dSIlya Dryomov ret = PTR_ERR(hoid->nspace); 1835a02a946dSIlya Dryomov hoid->nspace = NULL; 1836a02a946dSIlya Dryomov return ret; 1837a02a946dSIlya Dryomov } 1838a02a946dSIlya Dryomov 1839a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->pool, e_inval); 1840a02a946dSIlya Dryomov 1841a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1842a02a946dSIlya Dryomov return 0; 1843a02a946dSIlya Dryomov 1844a02a946dSIlya Dryomov e_inval: 1845a02a946dSIlya Dryomov return -EINVAL; 1846a02a946dSIlya Dryomov } 1847a02a946dSIlya Dryomov 1848a02a946dSIlya Dryomov static int hoid_encoding_size(const struct ceph_hobject_id *hoid) 1849a02a946dSIlya Dryomov { 1850a02a946dSIlya Dryomov return 8 + 4 + 1 + 8 + /* snapid, hash, is_max, pool */ 1851a02a946dSIlya Dryomov 4 + hoid->key_len + 4 + hoid->oid_len + 4 + hoid->nspace_len; 1852a02a946dSIlya Dryomov } 1853a02a946dSIlya Dryomov 1854a02a946dSIlya Dryomov static void encode_hoid(void **p, void *end, const struct ceph_hobject_id *hoid) 1855a02a946dSIlya Dryomov { 1856a02a946dSIlya Dryomov ceph_start_encoding(p, 4, 3, hoid_encoding_size(hoid)); 1857a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->key, hoid->key_len); 1858a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->oid, hoid->oid_len); 1859a02a946dSIlya Dryomov ceph_encode_64(p, hoid->snapid); 1860a02a946dSIlya Dryomov ceph_encode_32(p, hoid->hash); 1861a02a946dSIlya Dryomov ceph_encode_8(p, hoid->is_max); 1862a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->nspace, hoid->nspace_len); 1863a02a946dSIlya Dryomov ceph_encode_64(p, hoid->pool); 1864a02a946dSIlya Dryomov } 1865a02a946dSIlya Dryomov 1866a02a946dSIlya Dryomov static void free_hoid(struct ceph_hobject_id *hoid) 1867a02a946dSIlya Dryomov { 1868a02a946dSIlya Dryomov if (hoid) { 1869a02a946dSIlya Dryomov kfree(hoid->key); 1870a02a946dSIlya Dryomov kfree(hoid->oid); 1871a02a946dSIlya Dryomov kfree(hoid->nspace); 1872a02a946dSIlya Dryomov kfree(hoid); 1873a02a946dSIlya Dryomov } 1874a02a946dSIlya Dryomov } 1875a02a946dSIlya Dryomov 1876a02a946dSIlya Dryomov static struct ceph_osd_backoff *alloc_backoff(void) 1877a02a946dSIlya Dryomov { 1878a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1879a02a946dSIlya Dryomov 1880a02a946dSIlya Dryomov backoff = kzalloc(sizeof(*backoff), GFP_NOIO); 1881a02a946dSIlya Dryomov if (!backoff) 1882a02a946dSIlya Dryomov return NULL; 1883a02a946dSIlya Dryomov 1884a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->spg_node); 1885a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->id_node); 1886a02a946dSIlya Dryomov return backoff; 1887a02a946dSIlya Dryomov } 1888a02a946dSIlya Dryomov 1889a02a946dSIlya Dryomov static void free_backoff(struct ceph_osd_backoff *backoff) 1890a02a946dSIlya Dryomov { 1891a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->spg_node)); 1892a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->id_node)); 1893a02a946dSIlya Dryomov 1894a02a946dSIlya Dryomov free_hoid(backoff->begin); 1895a02a946dSIlya Dryomov free_hoid(backoff->end); 1896a02a946dSIlya Dryomov kfree(backoff); 1897a02a946dSIlya Dryomov } 1898a02a946dSIlya Dryomov 1899a02a946dSIlya Dryomov /* 1900a02a946dSIlya Dryomov * Within a specific spgid, backoffs are managed by ->begin hoid. 1901a02a946dSIlya Dryomov */ 1902a02a946dSIlya Dryomov DEFINE_RB_INSDEL_FUNCS2(backoff, struct ceph_osd_backoff, begin, hoid_compare, 1903a02a946dSIlya Dryomov RB_BYVAL, spg_node); 1904a02a946dSIlya Dryomov 1905a02a946dSIlya Dryomov static struct ceph_osd_backoff *lookup_containing_backoff(struct rb_root *root, 1906a02a946dSIlya Dryomov const struct ceph_hobject_id *hoid) 1907a02a946dSIlya Dryomov { 1908a02a946dSIlya Dryomov struct rb_node *n = root->rb_node; 1909a02a946dSIlya Dryomov 1910a02a946dSIlya Dryomov while (n) { 1911a02a946dSIlya Dryomov struct ceph_osd_backoff *cur = 1912a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_backoff, spg_node); 1913a02a946dSIlya Dryomov int cmp; 1914a02a946dSIlya Dryomov 1915a02a946dSIlya Dryomov cmp = hoid_compare(hoid, cur->begin); 1916a02a946dSIlya Dryomov if (cmp < 0) { 1917a02a946dSIlya Dryomov n = n->rb_left; 1918a02a946dSIlya Dryomov } else if (cmp > 0) { 1919a02a946dSIlya Dryomov if (hoid_compare(hoid, cur->end) < 0) 1920a02a946dSIlya Dryomov return cur; 1921a02a946dSIlya Dryomov 1922a02a946dSIlya Dryomov n = n->rb_right; 1923a02a946dSIlya Dryomov } else { 1924a02a946dSIlya Dryomov return cur; 1925a02a946dSIlya Dryomov } 1926a02a946dSIlya Dryomov } 1927a02a946dSIlya Dryomov 1928a02a946dSIlya Dryomov return NULL; 1929a02a946dSIlya Dryomov } 1930a02a946dSIlya Dryomov 1931a02a946dSIlya Dryomov /* 1932a02a946dSIlya Dryomov * Each backoff has a unique id within its OSD session. 1933a02a946dSIlya Dryomov */ 1934a02a946dSIlya Dryomov DEFINE_RB_FUNCS(backoff_by_id, struct ceph_osd_backoff, id, id_node) 1935a02a946dSIlya Dryomov 1936a02a946dSIlya Dryomov static void clear_backoffs(struct ceph_osd *osd) 1937a02a946dSIlya Dryomov { 1938a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&osd->o_backoff_mappings)) { 1939a02a946dSIlya Dryomov struct ceph_spg_mapping *spg = 1940a02a946dSIlya Dryomov rb_entry(rb_first(&osd->o_backoff_mappings), 1941a02a946dSIlya Dryomov struct ceph_spg_mapping, node); 1942a02a946dSIlya Dryomov 1943a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&spg->backoffs)) { 1944a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff = 1945a02a946dSIlya Dryomov rb_entry(rb_first(&spg->backoffs), 1946a02a946dSIlya Dryomov struct ceph_osd_backoff, spg_node); 1947a02a946dSIlya Dryomov 1948a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 1949a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 1950a02a946dSIlya Dryomov free_backoff(backoff); 1951a02a946dSIlya Dryomov } 1952a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 1953a02a946dSIlya Dryomov free_spg_mapping(spg); 1954a02a946dSIlya Dryomov } 1955a02a946dSIlya Dryomov } 1956a02a946dSIlya Dryomov 1957a02a946dSIlya Dryomov /* 1958a02a946dSIlya Dryomov * Set up a temporary, non-owning view into @t. 1959a02a946dSIlya Dryomov */ 1960a02a946dSIlya Dryomov static void hoid_fill_from_target(struct ceph_hobject_id *hoid, 1961a02a946dSIlya Dryomov const struct ceph_osd_request_target *t) 1962a02a946dSIlya Dryomov { 1963a02a946dSIlya Dryomov hoid->key = NULL; 1964a02a946dSIlya Dryomov hoid->key_len = 0; 1965a02a946dSIlya Dryomov hoid->oid = t->target_oid.name; 1966a02a946dSIlya Dryomov hoid->oid_len = t->target_oid.name_len; 1967a02a946dSIlya Dryomov hoid->snapid = CEPH_NOSNAP; 1968a02a946dSIlya Dryomov hoid->hash = t->pgid.seed; 1969a02a946dSIlya Dryomov hoid->is_max = false; 1970a02a946dSIlya Dryomov if (t->target_oloc.pool_ns) { 1971a02a946dSIlya Dryomov hoid->nspace = t->target_oloc.pool_ns->str; 1972a02a946dSIlya Dryomov hoid->nspace_len = t->target_oloc.pool_ns->len; 1973a02a946dSIlya Dryomov } else { 1974a02a946dSIlya Dryomov hoid->nspace = NULL; 1975a02a946dSIlya Dryomov hoid->nspace_len = 0; 1976a02a946dSIlya Dryomov } 1977a02a946dSIlya Dryomov hoid->pool = t->target_oloc.pool; 1978a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1979a02a946dSIlya Dryomov } 1980a02a946dSIlya Dryomov 1981a02a946dSIlya Dryomov static bool should_plug_request(struct ceph_osd_request *req) 1982a02a946dSIlya Dryomov { 1983a02a946dSIlya Dryomov struct ceph_osd *osd = req->r_osd; 1984a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1985a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1986a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 1987a02a946dSIlya Dryomov 1988a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &req->r_t.spgid); 1989a02a946dSIlya Dryomov if (!spg) 1990a02a946dSIlya Dryomov return false; 1991a02a946dSIlya Dryomov 1992a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, &req->r_t); 1993a02a946dSIlya Dryomov backoff = lookup_containing_backoff(&spg->backoffs, &hoid); 1994a02a946dSIlya Dryomov if (!backoff) 1995a02a946dSIlya Dryomov return false; 1996a02a946dSIlya Dryomov 1997a02a946dSIlya Dryomov dout("%s req %p tid %llu backoff osd%d spgid %llu.%xs%d id %llu\n", 1998a02a946dSIlya Dryomov __func__, req, req->r_tid, osd->o_osd, backoff->spgid.pgid.pool, 1999a02a946dSIlya Dryomov backoff->spgid.pgid.seed, backoff->spgid.shard, backoff->id); 2000a02a946dSIlya Dryomov return true; 2001a02a946dSIlya Dryomov } 2002a02a946dSIlya Dryomov 20030d9c1ab3SIlya Dryomov /* 20040d9c1ab3SIlya Dryomov * Keep get_num_data_items() in sync with this function. 20050d9c1ab3SIlya Dryomov */ 200698c4bfe9SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req) 20073d14c5d2SYehuda Sadeh { 200898c4bfe9SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 200998c4bfe9SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 201098c4bfe9SIlya Dryomov struct ceph_osd_req_op *op; 20113d14c5d2SYehuda Sadeh 201298c4bfe9SIlya Dryomov if (req->r_request->num_data_items || req->r_reply->num_data_items) 2013bb873b53SIlya Dryomov return; 20143d14c5d2SYehuda Sadeh 201598c4bfe9SIlya Dryomov WARN_ON(request_msg->data_length || reply_msg->data_length); 201698c4bfe9SIlya Dryomov for (op = req->r_ops; op != &req->r_ops[req->r_num_ops]; op++) { 2017bb873b53SIlya Dryomov switch (op->op) { 2018bb873b53SIlya Dryomov /* request */ 2019bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 2020bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 2021bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 202298c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 202398c4bfe9SIlya Dryomov &op->extent.osd_data); 2024bb873b53SIlya Dryomov break; 2025bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 2026bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 2027bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 2028bb873b53SIlya Dryomov op->xattr.value_len); 202998c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 203098c4bfe9SIlya Dryomov &op->xattr.osd_data); 2031bb873b53SIlya Dryomov break; 2032922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 203398c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 2034922dab61SIlya Dryomov &op->notify_ack.request_data); 2035922dab61SIlya Dryomov break; 203678beb0ffSLuis Henriques case CEPH_OSD_OP_COPY_FROM2: 203723ddf9beSLuis Henriques ceph_osdc_msg_data_add(request_msg, 203823ddf9beSLuis Henriques &op->copy_from.osd_data); 203923ddf9beSLuis Henriques break; 2040bb873b53SIlya Dryomov 2041bb873b53SIlya Dryomov /* reply */ 2042bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 204398c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 2044bb873b53SIlya Dryomov &op->raw_data_in); 2045bb873b53SIlya Dryomov break; 2046bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 204798c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 2048bb873b53SIlya Dryomov &op->extent.osd_data); 2049bb873b53SIlya Dryomov break; 2050a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 205198c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 2052a4ed38d7SDouglas Fuller &op->list_watchers.response_data); 2053a4ed38d7SDouglas Fuller break; 2054bb873b53SIlya Dryomov 2055bb873b53SIlya Dryomov /* both */ 2056bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 2057bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 2058bb873b53SIlya Dryomov op->cls.method_len + 2059bb873b53SIlya Dryomov op->cls.indata_len); 206098c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 206198c4bfe9SIlya Dryomov &op->cls.request_info); 2062bb873b53SIlya Dryomov /* optional, can be NONE */ 206398c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 206498c4bfe9SIlya Dryomov &op->cls.request_data); 2065bb873b53SIlya Dryomov /* optional, can be NONE */ 206698c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 2067bb873b53SIlya Dryomov &op->cls.response_data); 2068bb873b53SIlya Dryomov break; 206919079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 207098c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 207119079203SIlya Dryomov &op->notify.request_data); 207298c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 207319079203SIlya Dryomov &op->notify.response_data); 207419079203SIlya Dryomov break; 2075bb873b53SIlya Dryomov } 2076bb873b53SIlya Dryomov } 2077bb873b53SIlya Dryomov } 2078bb873b53SIlya Dryomov 20792e59ffd1SIlya Dryomov static void encode_pgid(void **p, const struct ceph_pg *pgid) 20802e59ffd1SIlya Dryomov { 20812e59ffd1SIlya Dryomov ceph_encode_8(p, 1); 20822e59ffd1SIlya Dryomov ceph_encode_64(p, pgid->pool); 20832e59ffd1SIlya Dryomov ceph_encode_32(p, pgid->seed); 20842e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 20852e59ffd1SIlya Dryomov } 20862e59ffd1SIlya Dryomov 20878cb441c0SIlya Dryomov static void encode_spgid(void **p, const struct ceph_spg *spgid) 20888cb441c0SIlya Dryomov { 20898cb441c0SIlya Dryomov ceph_start_encoding(p, 1, 1, CEPH_PGID_ENCODING_LEN + 1); 20908cb441c0SIlya Dryomov encode_pgid(p, &spgid->pgid); 20918cb441c0SIlya Dryomov ceph_encode_8(p, spgid->shard); 20928cb441c0SIlya Dryomov } 20938cb441c0SIlya Dryomov 20942e59ffd1SIlya Dryomov static void encode_oloc(void **p, void *end, 20952e59ffd1SIlya Dryomov const struct ceph_object_locator *oloc) 20962e59ffd1SIlya Dryomov { 20972e59ffd1SIlya Dryomov ceph_start_encoding(p, 5, 4, ceph_oloc_encoding_size(oloc)); 20982e59ffd1SIlya Dryomov ceph_encode_64(p, oloc->pool); 20992e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 21002e59ffd1SIlya Dryomov ceph_encode_32(p, 0); /* key len */ 21012e59ffd1SIlya Dryomov if (oloc->pool_ns) 21022e59ffd1SIlya Dryomov ceph_encode_string(p, end, oloc->pool_ns->str, 21032e59ffd1SIlya Dryomov oloc->pool_ns->len); 21042e59ffd1SIlya Dryomov else 21052e59ffd1SIlya Dryomov ceph_encode_32(p, 0); 21062e59ffd1SIlya Dryomov } 21072e59ffd1SIlya Dryomov 21088cb441c0SIlya Dryomov static void encode_request_partial(struct ceph_osd_request *req, 21098cb441c0SIlya Dryomov struct ceph_msg *msg) 2110bb873b53SIlya Dryomov { 2111bb873b53SIlya Dryomov void *p = msg->front.iov_base; 2112bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 2113bb873b53SIlya Dryomov u32 data_len = 0; 2114bb873b53SIlya Dryomov int i; 2115bb873b53SIlya Dryomov 2116bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 2117bb873b53SIlya Dryomov /* snapshots aren't writeable */ 2118bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 2119bb873b53SIlya Dryomov } else { 2120bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 2121bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 2122bb873b53SIlya Dryomov } 2123bb873b53SIlya Dryomov 212498c4bfe9SIlya Dryomov setup_request_data(req); 2125bb873b53SIlya Dryomov 21268cb441c0SIlya Dryomov encode_spgid(&p, &req->r_t.spgid); /* actual spg */ 21278cb441c0SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); /* raw hash */ 2128bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 2129bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 21308cb441c0SIlya Dryomov 21318cb441c0SIlya Dryomov /* reqid */ 21328cb441c0SIlya Dryomov ceph_start_encoding(&p, 2, 2, sizeof(struct ceph_osd_reqid)); 21338cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_osd_reqid)); 21348cb441c0SIlya Dryomov p += sizeof(struct ceph_osd_reqid); 21358cb441c0SIlya Dryomov 21368cb441c0SIlya Dryomov /* trace */ 21378cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_blkin_trace_info)); 21388cb441c0SIlya Dryomov p += sizeof(struct ceph_blkin_trace_info); 21398cb441c0SIlya Dryomov 21408cb441c0SIlya Dryomov ceph_encode_32(&p, 0); /* client_inc, always 0 */ 2141fac02ddfSArnd Bergmann ceph_encode_timespec64(p, &req->r_mtime); 2142bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 2143aa26d662SJeff Layton 21442e59ffd1SIlya Dryomov encode_oloc(&p, end, &req->r_t.target_oloc); 21452e59ffd1SIlya Dryomov ceph_encode_string(&p, end, req->r_t.target_oid.name, 21462e59ffd1SIlya Dryomov req->r_t.target_oid.name_len); 2147bb873b53SIlya Dryomov 2148bb873b53SIlya Dryomov /* ops, can imply data */ 2149bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 2150bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 2151bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 2152bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 2153bb873b53SIlya Dryomov } 2154bb873b53SIlya Dryomov 2155bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 2156bb873b53SIlya Dryomov if (req->r_snapc) { 2157bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 2158bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 2159bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 2160bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 2161bb873b53SIlya Dryomov } else { 2162bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 2163bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 2164bb873b53SIlya Dryomov } 2165bb873b53SIlya Dryomov 2166bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 2167986e8989SIlya Dryomov BUG_ON(p > end - 8); /* space for features */ 2168bb873b53SIlya Dryomov 21698cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(8); /* MOSDOp v8 */ 21708cb441c0SIlya Dryomov /* front_len is finalized in encode_request_finish() */ 2171986e8989SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 2172986e8989SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 2173bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 2174bb873b53SIlya Dryomov /* 2175bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 2176bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 2177bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 2178bb873b53SIlya Dryomov */ 2179bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 2180bb873b53SIlya Dryomov 21818cb441c0SIlya Dryomov dout("%s req %p msg %p oid %s oid_len %d\n", __func__, req, msg, 21828cb441c0SIlya Dryomov req->r_t.target_oid.name, req->r_t.target_oid.name_len); 21838cb441c0SIlya Dryomov } 21848cb441c0SIlya Dryomov 21858cb441c0SIlya Dryomov static void encode_request_finish(struct ceph_msg *msg) 21868cb441c0SIlya Dryomov { 21878cb441c0SIlya Dryomov void *p = msg->front.iov_base; 2188986e8989SIlya Dryomov void *const partial_end = p + msg->front.iov_len; 21898cb441c0SIlya Dryomov void *const end = p + msg->front_alloc_len; 21908cb441c0SIlya Dryomov 21918cb441c0SIlya Dryomov if (CEPH_HAVE_FEATURE(msg->con->peer_features, RESEND_ON_SPLIT)) { 21928cb441c0SIlya Dryomov /* luminous OSD -- encode features and be done */ 2193986e8989SIlya Dryomov p = partial_end; 21948cb441c0SIlya Dryomov ceph_encode_64(&p, msg->con->peer_features); 21958cb441c0SIlya Dryomov } else { 21968cb441c0SIlya Dryomov struct { 21978cb441c0SIlya Dryomov char spgid[CEPH_ENCODING_START_BLK_LEN + 21988cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1]; 21998cb441c0SIlya Dryomov __le32 hash; 22008cb441c0SIlya Dryomov __le32 epoch; 22018cb441c0SIlya Dryomov __le32 flags; 22028cb441c0SIlya Dryomov char reqid[CEPH_ENCODING_START_BLK_LEN + 22038cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid)]; 22048cb441c0SIlya Dryomov char trace[sizeof(struct ceph_blkin_trace_info)]; 22058cb441c0SIlya Dryomov __le32 client_inc; 22068cb441c0SIlya Dryomov struct ceph_timespec mtime; 22078cb441c0SIlya Dryomov } __packed head; 22088cb441c0SIlya Dryomov struct ceph_pg pgid; 22098cb441c0SIlya Dryomov void *oloc, *oid, *tail; 22108cb441c0SIlya Dryomov int oloc_len, oid_len, tail_len; 22118cb441c0SIlya Dryomov int len; 22128cb441c0SIlya Dryomov 22138cb441c0SIlya Dryomov /* 22148cb441c0SIlya Dryomov * Pre-luminous OSD -- reencode v8 into v4 using @head 22158cb441c0SIlya Dryomov * as a temporary buffer. Encode the raw PG; the rest 22168cb441c0SIlya Dryomov * is just a matter of moving oloc, oid and tail blobs 22178cb441c0SIlya Dryomov * around. 22188cb441c0SIlya Dryomov */ 22198cb441c0SIlya Dryomov memcpy(&head, p, sizeof(head)); 22208cb441c0SIlya Dryomov p += sizeof(head); 22218cb441c0SIlya Dryomov 22228cb441c0SIlya Dryomov oloc = p; 22238cb441c0SIlya Dryomov p += CEPH_ENCODING_START_BLK_LEN; 22248cb441c0SIlya Dryomov pgid.pool = ceph_decode_64(&p); 22258cb441c0SIlya Dryomov p += 4 + 4; /* preferred, key len */ 22268cb441c0SIlya Dryomov len = ceph_decode_32(&p); 22278cb441c0SIlya Dryomov p += len; /* nspace */ 22288cb441c0SIlya Dryomov oloc_len = p - oloc; 22298cb441c0SIlya Dryomov 22308cb441c0SIlya Dryomov oid = p; 22318cb441c0SIlya Dryomov len = ceph_decode_32(&p); 22328cb441c0SIlya Dryomov p += len; 22338cb441c0SIlya Dryomov oid_len = p - oid; 22348cb441c0SIlya Dryomov 22358cb441c0SIlya Dryomov tail = p; 2236986e8989SIlya Dryomov tail_len = partial_end - p; 22378cb441c0SIlya Dryomov 22388cb441c0SIlya Dryomov p = msg->front.iov_base; 22398cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.client_inc, sizeof(head.client_inc)); 22408cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.epoch, sizeof(head.epoch)); 22418cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.flags, sizeof(head.flags)); 22428cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.mtime, sizeof(head.mtime)); 22438cb441c0SIlya Dryomov 22448cb441c0SIlya Dryomov /* reassert_version */ 22458cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_eversion)); 22468cb441c0SIlya Dryomov p += sizeof(struct ceph_eversion); 22478cb441c0SIlya Dryomov 22488cb441c0SIlya Dryomov BUG_ON(p >= oloc); 22498cb441c0SIlya Dryomov memmove(p, oloc, oloc_len); 22508cb441c0SIlya Dryomov p += oloc_len; 22518cb441c0SIlya Dryomov 22528cb441c0SIlya Dryomov pgid.seed = le32_to_cpu(head.hash); 22538cb441c0SIlya Dryomov encode_pgid(&p, &pgid); /* raw pg */ 22548cb441c0SIlya Dryomov 22558cb441c0SIlya Dryomov BUG_ON(p >= oid); 22568cb441c0SIlya Dryomov memmove(p, oid, oid_len); 22578cb441c0SIlya Dryomov p += oid_len; 22588cb441c0SIlya Dryomov 22598cb441c0SIlya Dryomov /* tail -- ops, snapid, snapc, retry_attempt */ 22608cb441c0SIlya Dryomov BUG_ON(p >= tail); 22618cb441c0SIlya Dryomov memmove(p, tail, tail_len); 22628cb441c0SIlya Dryomov p += tail_len; 22638cb441c0SIlya Dryomov 22648cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 22658cb441c0SIlya Dryomov } 22668cb441c0SIlya Dryomov 22678cb441c0SIlya Dryomov BUG_ON(p > end); 22688cb441c0SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 22698cb441c0SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 22708cb441c0SIlya Dryomov 22718cb441c0SIlya Dryomov dout("%s msg %p tid %llu %u+%u+%u v%d\n", __func__, msg, 22728cb441c0SIlya Dryomov le64_to_cpu(msg->hdr.tid), le32_to_cpu(msg->hdr.front_len), 22738cb441c0SIlya Dryomov le32_to_cpu(msg->hdr.middle_len), le32_to_cpu(msg->hdr.data_len), 22748cb441c0SIlya Dryomov le16_to_cpu(msg->hdr.version)); 2275bb873b53SIlya Dryomov } 2276bb873b53SIlya Dryomov 2277bb873b53SIlya Dryomov /* 2278bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 2279bb873b53SIlya Dryomov */ 2280bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 2281bb873b53SIlya Dryomov { 2282bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 2283bb873b53SIlya Dryomov 22845aea3dcdSIlya Dryomov verify_osd_locked(osd); 2285bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 2286bb873b53SIlya Dryomov 2287a02a946dSIlya Dryomov /* backoff? */ 2288a02a946dSIlya Dryomov if (should_plug_request(req)) 2289a02a946dSIlya Dryomov return; 2290a02a946dSIlya Dryomov 22915aea3dcdSIlya Dryomov /* 22925aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 22935aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 22945aea3dcdSIlya Dryomov */ 22955aea3dcdSIlya Dryomov if (req->r_sent) 22965aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 22975aea3dcdSIlya Dryomov 2298bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 2299bb873b53SIlya Dryomov if (req->r_attempts) 2300bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 2301bb873b53SIlya Dryomov else 2302bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 2303bb873b53SIlya Dryomov 23048cb441c0SIlya Dryomov encode_request_partial(req, req->r_request); 2305bb873b53SIlya Dryomov 230604c7d789SIlya 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", 2307bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 2308dc98ff72SIlya Dryomov req->r_t.spgid.pgid.pool, req->r_t.spgid.pgid.seed, 230904c7d789SIlya Dryomov req->r_t.spgid.shard, osd->o_osd, req->r_t.epoch, req->r_flags, 231004c7d789SIlya Dryomov req->r_attempts); 2311bb873b53SIlya Dryomov 2312bb873b53SIlya Dryomov req->r_t.paused = false; 23133d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 2314bb873b53SIlya Dryomov req->r_attempts++; 23153d14c5d2SYehuda Sadeh 2316bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 2317bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 2318bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 23193d14c5d2SYehuda Sadeh } 23203d14c5d2SYehuda Sadeh 232142c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 232242c1b124SIlya Dryomov { 232342c1b124SIlya Dryomov bool continuous = false; 232442c1b124SIlya Dryomov 23255aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 232642c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 232742c1b124SIlya Dryomov 2328b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2329b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || 2330b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 233142c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 233242c1b124SIlya Dryomov continuous = true; 233342c1b124SIlya Dryomov } else { 233442c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 233542c1b124SIlya Dryomov } 233642c1b124SIlya Dryomov 233742c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 233842c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 233942c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 234042c1b124SIlya Dryomov } 234142c1b124SIlya Dryomov 2342a1f4020aSJeff Layton static void complete_request(struct ceph_osd_request *req, int err); 23434609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req); 23444609245eSIlya Dryomov 23455aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 23460bbfdfe8SIlya Dryomov { 23475aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 23485aea3dcdSIlya Dryomov struct ceph_osd *osd; 23494609245eSIlya Dryomov enum calc_target_result ct_res; 235066850df5SIlya Dryomov int err = 0; 23515aea3dcdSIlya Dryomov bool need_send = false; 23525aea3dcdSIlya Dryomov bool promoted = false; 23530bbfdfe8SIlya Dryomov 2354b18b9550SIlya Dryomov WARN_ON(req->r_tid); 23555aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 23565aea3dcdSIlya Dryomov 23575aea3dcdSIlya Dryomov again: 23588edf84baSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, false); 23594609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) 23604609245eSIlya Dryomov goto promote; 23614609245eSIlya Dryomov 23625aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 23635aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 23645aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 23655aea3dcdSIlya Dryomov goto promote; 23665aea3dcdSIlya Dryomov } 23675aea3dcdSIlya Dryomov 236866850df5SIlya Dryomov if (osdc->abort_err) { 236966850df5SIlya Dryomov dout("req %p abort_err %d\n", req, osdc->abort_err); 237066850df5SIlya Dryomov err = osdc->abort_err; 237166850df5SIlya Dryomov } else if (osdc->osdmap->epoch < osdc->epoch_barrier) { 237258eb7932SJeff Layton dout("req %p epoch %u barrier %u\n", req, osdc->osdmap->epoch, 237358eb7932SJeff Layton osdc->epoch_barrier); 237458eb7932SJeff Layton req->r_t.paused = true; 237558eb7932SJeff Layton maybe_request_map(osdc); 237658eb7932SJeff Layton } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 2377b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 23785aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 23795aea3dcdSIlya Dryomov req->r_t.paused = true; 23805aea3dcdSIlya Dryomov maybe_request_map(osdc); 23815aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 2382b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 23835aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 23845aea3dcdSIlya Dryomov req->r_t.paused = true; 23855aea3dcdSIlya Dryomov maybe_request_map(osdc); 23865aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 23875aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 23885aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 2389b7ec35b3SIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 23905aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 23915aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 239202b2f549SDongsheng Yang if (ceph_test_opt(osdc->client, ABORT_ON_FULL)) { 239329e87820SIlya Dryomov err = -ENOSPC; 239429e87820SIlya Dryomov } else { 23955aea3dcdSIlya Dryomov pr_warn_ratelimited("FULL or reached pool quota\n"); 23965aea3dcdSIlya Dryomov req->r_t.paused = true; 23975aea3dcdSIlya Dryomov maybe_request_map(osdc); 239829e87820SIlya Dryomov } 23995aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 24005aea3dcdSIlya Dryomov need_send = true; 24010bbfdfe8SIlya Dryomov } else { 24025aea3dcdSIlya Dryomov maybe_request_map(osdc); 24030bbfdfe8SIlya Dryomov } 24040bbfdfe8SIlya Dryomov 24055aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 24065aea3dcdSIlya Dryomov /* 24075aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 24085aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 24095aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 24105aea3dcdSIlya Dryomov */ 24115aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 24125aea3dcdSIlya Dryomov link_request(osd, req); 24135aea3dcdSIlya Dryomov if (need_send) 24145aea3dcdSIlya Dryomov send_request(req); 241566850df5SIlya Dryomov else if (err) 241666850df5SIlya Dryomov complete_request(req, err); 24175aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 24185aea3dcdSIlya Dryomov 24196001567cSIlya Dryomov if (!err && ct_res == CALC_TARGET_POOL_DNE) 24204609245eSIlya Dryomov send_map_check(req); 24214609245eSIlya Dryomov 24225aea3dcdSIlya Dryomov if (promoted) 24235aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 24245aea3dcdSIlya Dryomov return; 24255aea3dcdSIlya Dryomov 24265aea3dcdSIlya Dryomov promote: 24275aea3dcdSIlya Dryomov up_read(&osdc->lock); 24285aea3dcdSIlya Dryomov down_write(&osdc->lock); 24295aea3dcdSIlya Dryomov wrlocked = true; 24305aea3dcdSIlya Dryomov promoted = true; 24315aea3dcdSIlya Dryomov goto again; 24320bbfdfe8SIlya Dryomov } 24330bbfdfe8SIlya Dryomov 24345aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 24355aea3dcdSIlya Dryomov { 243654ea0046SIlya Dryomov WARN_ON(req->r_flags & (CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK)); 2437b18b9550SIlya Dryomov WARN_ON(!(req->r_flags & (CEPH_OSD_FLAG_READ | CEPH_OSD_FLAG_WRITE))); 24385aea3dcdSIlya Dryomov 2439b18b9550SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ONDISK; 244022d2cfdfSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 24417cc5e38fSIlya Dryomov 24427cc5e38fSIlya Dryomov req->r_start_stamp = jiffies; 244397e27aaaSXiubo Li req->r_start_latency = ktime_get(); 24445aea3dcdSIlya Dryomov } 24455aea3dcdSIlya Dryomov 24465aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 24475aea3dcdSIlya Dryomov { 24485aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 24495aea3dcdSIlya Dryomov account_request(req); 24505aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 24515aea3dcdSIlya Dryomov } 24525aea3dcdSIlya Dryomov 245345ee2c1dSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 24545aea3dcdSIlya Dryomov { 24555aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 24565aea3dcdSIlya Dryomov 24574609245eSIlya Dryomov WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); 245804c7d789SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 245904c7d789SIlya Dryomov 246097e27aaaSXiubo Li req->r_end_latency = ktime_get(); 246197e27aaaSXiubo Li 246204c7d789SIlya Dryomov if (req->r_osd) 246304c7d789SIlya Dryomov unlink_request(req->r_osd, req); 24645aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 24655aea3dcdSIlya Dryomov 24665aea3dcdSIlya Dryomov /* 24675aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 24685aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 24695aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 24705aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 24715aea3dcdSIlya Dryomov */ 24725aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 24735aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 24745aea3dcdSIlya Dryomov } 24755aea3dcdSIlya Dryomov 2476fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 2477fe5da05eSIlya Dryomov { 2478d75f773cSSakari Ailus dout("%s req %p tid %llu cb %ps result %d\n", __func__, req, 2479b18b9550SIlya Dryomov req->r_tid, req->r_callback, req->r_result); 248026df726bSIlya Dryomov 248126df726bSIlya Dryomov if (req->r_callback) 2482fe5da05eSIlya Dryomov req->r_callback(req); 248326df726bSIlya Dryomov complete_all(&req->r_completion); 248426df726bSIlya Dryomov ceph_osdc_put_request(req); 2485b18b9550SIlya Dryomov } 2486fe5da05eSIlya Dryomov 248788bc1922SIlya Dryomov static void complete_request_workfn(struct work_struct *work) 248888bc1922SIlya Dryomov { 248988bc1922SIlya Dryomov struct ceph_osd_request *req = 249088bc1922SIlya Dryomov container_of(work, struct ceph_osd_request, r_complete_work); 249188bc1922SIlya Dryomov 249288bc1922SIlya Dryomov __complete_request(req); 24930bbfdfe8SIlya Dryomov } 24940bbfdfe8SIlya Dryomov 24954609245eSIlya Dryomov /* 2496b18b9550SIlya Dryomov * This is open-coded in handle_reply(). 24974609245eSIlya Dryomov */ 24984609245eSIlya Dryomov static void complete_request(struct ceph_osd_request *req, int err) 24994609245eSIlya Dryomov { 25004609245eSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 25014609245eSIlya Dryomov 25024609245eSIlya Dryomov req->r_result = err; 250345ee2c1dSIlya Dryomov finish_request(req); 250488bc1922SIlya Dryomov 250588bc1922SIlya Dryomov INIT_WORK(&req->r_complete_work, complete_request_workfn); 250688bc1922SIlya Dryomov queue_work(req->r_osdc->completion_wq, &req->r_complete_work); 25074609245eSIlya Dryomov } 25084609245eSIlya Dryomov 25094609245eSIlya Dryomov static void cancel_map_check(struct ceph_osd_request *req) 25104609245eSIlya Dryomov { 25114609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 25124609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 25134609245eSIlya Dryomov 25144609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 25154609245eSIlya Dryomov 25164609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 25174609245eSIlya Dryomov if (!lookup_req) 25184609245eSIlya Dryomov return; 25194609245eSIlya Dryomov 25204609245eSIlya Dryomov WARN_ON(lookup_req != req); 25214609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 25224609245eSIlya Dryomov ceph_osdc_put_request(req); 25234609245eSIlya Dryomov } 25244609245eSIlya Dryomov 25255aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 25265aea3dcdSIlya Dryomov { 25275aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 25285aea3dcdSIlya Dryomov 25294609245eSIlya Dryomov cancel_map_check(req); 253045ee2c1dSIlya Dryomov finish_request(req); 2531b18b9550SIlya Dryomov complete_all(&req->r_completion); 2532c297eb42SIlya Dryomov ceph_osdc_put_request(req); 25335aea3dcdSIlya Dryomov } 25345aea3dcdSIlya Dryomov 25357cc5e38fSIlya Dryomov static void abort_request(struct ceph_osd_request *req, int err) 25367cc5e38fSIlya Dryomov { 25377cc5e38fSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 25387cc5e38fSIlya Dryomov 25397cc5e38fSIlya Dryomov cancel_map_check(req); 25407cc5e38fSIlya Dryomov complete_request(req, err); 25417cc5e38fSIlya Dryomov } 25427cc5e38fSIlya Dryomov 254366850df5SIlya Dryomov static int abort_fn(struct ceph_osd_request *req, void *arg) 254466850df5SIlya Dryomov { 254566850df5SIlya Dryomov int err = *(int *)arg; 254666850df5SIlya Dryomov 254766850df5SIlya Dryomov abort_request(req, err); 254866850df5SIlya Dryomov return 0; /* continue iteration */ 254966850df5SIlya Dryomov } 255066850df5SIlya Dryomov 255166850df5SIlya Dryomov /* 255266850df5SIlya Dryomov * Abort all in-flight requests with @err and arrange for all future 255366850df5SIlya Dryomov * requests to be failed immediately. 255466850df5SIlya Dryomov */ 255566850df5SIlya Dryomov void ceph_osdc_abort_requests(struct ceph_osd_client *osdc, int err) 255666850df5SIlya Dryomov { 255766850df5SIlya Dryomov dout("%s osdc %p err %d\n", __func__, osdc, err); 255866850df5SIlya Dryomov down_write(&osdc->lock); 255966850df5SIlya Dryomov for_each_request(osdc, abort_fn, &err); 256066850df5SIlya Dryomov osdc->abort_err = err; 256166850df5SIlya Dryomov up_write(&osdc->lock); 256266850df5SIlya Dryomov } 256366850df5SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_abort_requests); 256466850df5SIlya Dryomov 25652cef0ba8SYan, Zheng void ceph_osdc_clear_abort_err(struct ceph_osd_client *osdc) 25662cef0ba8SYan, Zheng { 25672cef0ba8SYan, Zheng down_write(&osdc->lock); 25682cef0ba8SYan, Zheng osdc->abort_err = 0; 25692cef0ba8SYan, Zheng up_write(&osdc->lock); 25702cef0ba8SYan, Zheng } 25712cef0ba8SYan, Zheng EXPORT_SYMBOL(ceph_osdc_clear_abort_err); 25722cef0ba8SYan, Zheng 257358eb7932SJeff Layton static void update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 257458eb7932SJeff Layton { 257558eb7932SJeff Layton if (likely(eb > osdc->epoch_barrier)) { 257658eb7932SJeff Layton dout("updating epoch_barrier from %u to %u\n", 257758eb7932SJeff Layton osdc->epoch_barrier, eb); 257858eb7932SJeff Layton osdc->epoch_barrier = eb; 257958eb7932SJeff Layton /* Request map if we're not to the barrier yet */ 258058eb7932SJeff Layton if (eb > osdc->osdmap->epoch) 258158eb7932SJeff Layton maybe_request_map(osdc); 258258eb7932SJeff Layton } 258358eb7932SJeff Layton } 258458eb7932SJeff Layton 258558eb7932SJeff Layton void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 258658eb7932SJeff Layton { 258758eb7932SJeff Layton down_read(&osdc->lock); 258858eb7932SJeff Layton if (unlikely(eb > osdc->epoch_barrier)) { 258958eb7932SJeff Layton up_read(&osdc->lock); 259058eb7932SJeff Layton down_write(&osdc->lock); 259158eb7932SJeff Layton update_epoch_barrier(osdc, eb); 259258eb7932SJeff Layton up_write(&osdc->lock); 259358eb7932SJeff Layton } else { 259458eb7932SJeff Layton up_read(&osdc->lock); 259558eb7932SJeff Layton } 259658eb7932SJeff Layton } 259758eb7932SJeff Layton EXPORT_SYMBOL(ceph_osdc_update_epoch_barrier); 259858eb7932SJeff Layton 2599fc36d0a4SJeff Layton /* 26004eea0fefSIlya Dryomov * We can end up releasing caps as a result of abort_request(). 26014eea0fefSIlya Dryomov * In that case, we probably want to ensure that the cap release message 26024eea0fefSIlya Dryomov * has an updated epoch barrier in it, so set the epoch barrier prior to 26034eea0fefSIlya Dryomov * aborting the first request. 26044eea0fefSIlya Dryomov */ 26054eea0fefSIlya Dryomov static int abort_on_full_fn(struct ceph_osd_request *req, void *arg) 26064eea0fefSIlya Dryomov { 26074eea0fefSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 26084eea0fefSIlya Dryomov bool *victims = arg; 26094eea0fefSIlya Dryomov 2610c843d13cSIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 26114eea0fefSIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2612690f951dSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 26134eea0fefSIlya Dryomov if (!*victims) { 26144eea0fefSIlya Dryomov update_epoch_barrier(osdc, osdc->osdmap->epoch); 26154eea0fefSIlya Dryomov *victims = true; 26164eea0fefSIlya Dryomov } 26174eea0fefSIlya Dryomov abort_request(req, -ENOSPC); 26184eea0fefSIlya Dryomov } 26194eea0fefSIlya Dryomov 26204eea0fefSIlya Dryomov return 0; /* continue iteration */ 26214eea0fefSIlya Dryomov } 26224eea0fefSIlya Dryomov 26234eea0fefSIlya Dryomov /* 2624fc36d0a4SJeff Layton * Drop all pending requests that are stalled waiting on a full condition to 262558eb7932SJeff Layton * clear, and complete them with ENOSPC as the return code. Set the 262658eb7932SJeff Layton * osdc->epoch_barrier to the latest map epoch that we've seen if any were 262758eb7932SJeff Layton * cancelled. 2628fc36d0a4SJeff Layton */ 2629fc36d0a4SJeff Layton static void ceph_osdc_abort_on_full(struct ceph_osd_client *osdc) 2630fc36d0a4SJeff Layton { 263158eb7932SJeff Layton bool victims = false; 2632fc36d0a4SJeff Layton 263302b2f549SDongsheng Yang if (ceph_test_opt(osdc->client, ABORT_ON_FULL) && 2634c843d13cSIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || have_pool_full(osdc))) 26354eea0fefSIlya Dryomov for_each_request(osdc, abort_on_full_fn, &victims); 2636fc36d0a4SJeff Layton } 2637fc36d0a4SJeff Layton 26384609245eSIlya Dryomov static void check_pool_dne(struct ceph_osd_request *req) 26394609245eSIlya Dryomov { 26404609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 26414609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 26424609245eSIlya Dryomov 26434609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 26444609245eSIlya Dryomov WARN_ON(!map->epoch); 26454609245eSIlya Dryomov 26464609245eSIlya Dryomov if (req->r_attempts) { 26474609245eSIlya Dryomov /* 26484609245eSIlya Dryomov * We sent a request earlier, which means that 26494609245eSIlya Dryomov * previously the pool existed, and now it does not 26504609245eSIlya Dryomov * (i.e., it was deleted). 26514609245eSIlya Dryomov */ 26524609245eSIlya Dryomov req->r_map_dne_bound = map->epoch; 26534609245eSIlya Dryomov dout("%s req %p tid %llu pool disappeared\n", __func__, req, 26544609245eSIlya Dryomov req->r_tid); 26554609245eSIlya Dryomov } else { 26564609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, 26574609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, map->epoch); 26584609245eSIlya Dryomov } 26594609245eSIlya Dryomov 26604609245eSIlya Dryomov if (req->r_map_dne_bound) { 26614609245eSIlya Dryomov if (map->epoch >= req->r_map_dne_bound) { 26624609245eSIlya Dryomov /* we had a new enough map */ 26634609245eSIlya Dryomov pr_info_ratelimited("tid %llu pool does not exist\n", 26644609245eSIlya Dryomov req->r_tid); 26654609245eSIlya Dryomov complete_request(req, -ENOENT); 26664609245eSIlya Dryomov } 26674609245eSIlya Dryomov } else { 26684609245eSIlya Dryomov send_map_check(req); 26694609245eSIlya Dryomov } 26704609245eSIlya Dryomov } 26714609245eSIlya Dryomov 26724609245eSIlya Dryomov static void map_check_cb(struct ceph_mon_generic_request *greq) 26734609245eSIlya Dryomov { 26744609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 26754609245eSIlya Dryomov struct ceph_osd_request *req; 26764609245eSIlya Dryomov u64 tid = greq->private_data; 26774609245eSIlya Dryomov 26784609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 26794609245eSIlya Dryomov 26804609245eSIlya Dryomov down_write(&osdc->lock); 26814609245eSIlya Dryomov req = lookup_request_mc(&osdc->map_checks, tid); 26824609245eSIlya Dryomov if (!req) { 26834609245eSIlya Dryomov dout("%s tid %llu dne\n", __func__, tid); 26844609245eSIlya Dryomov goto out_unlock; 26854609245eSIlya Dryomov } 26864609245eSIlya Dryomov 26874609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, 26884609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, greq->u.newest); 26894609245eSIlya Dryomov if (!req->r_map_dne_bound) 26904609245eSIlya Dryomov req->r_map_dne_bound = greq->u.newest; 26914609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 26924609245eSIlya Dryomov check_pool_dne(req); 26934609245eSIlya Dryomov 26944609245eSIlya Dryomov ceph_osdc_put_request(req); 26954609245eSIlya Dryomov out_unlock: 26964609245eSIlya Dryomov up_write(&osdc->lock); 26974609245eSIlya Dryomov } 26984609245eSIlya Dryomov 26994609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req) 27004609245eSIlya Dryomov { 27014609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 27024609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 27034609245eSIlya Dryomov int ret; 27044609245eSIlya Dryomov 27054609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 27064609245eSIlya Dryomov 27074609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 27084609245eSIlya Dryomov if (lookup_req) { 27094609245eSIlya Dryomov WARN_ON(lookup_req != req); 27104609245eSIlya Dryomov return; 27114609245eSIlya Dryomov } 27124609245eSIlya Dryomov 27134609245eSIlya Dryomov ceph_osdc_get_request(req); 27144609245eSIlya Dryomov insert_request_mc(&osdc->map_checks, req); 27154609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 27164609245eSIlya Dryomov map_check_cb, req->r_tid); 27174609245eSIlya Dryomov WARN_ON(ret); 27184609245eSIlya Dryomov } 27194609245eSIlya Dryomov 27200bbfdfe8SIlya Dryomov /* 2721922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 2722922dab61SIlya Dryomov */ 2723922dab61SIlya Dryomov static void linger_release(struct kref *kref) 2724922dab61SIlya Dryomov { 2725922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2726922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 2727922dab61SIlya Dryomov 2728922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 2729922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 2730922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 2731922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 27324609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); 2733922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 2734b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lreq->pending_lworks)); 2735922dab61SIlya Dryomov WARN_ON(lreq->osd); 2736922dab61SIlya Dryomov 2737922dab61SIlya Dryomov if (lreq->reg_req) 2738922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 2739922dab61SIlya Dryomov if (lreq->ping_req) 2740922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 2741922dab61SIlya Dryomov target_destroy(&lreq->t); 2742922dab61SIlya Dryomov kfree(lreq); 2743922dab61SIlya Dryomov } 2744922dab61SIlya Dryomov 2745922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 2746922dab61SIlya Dryomov { 2747922dab61SIlya Dryomov if (lreq) 2748922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 2749922dab61SIlya Dryomov } 2750922dab61SIlya Dryomov 2751922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2752922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 2753922dab61SIlya Dryomov { 2754922dab61SIlya Dryomov kref_get(&lreq->kref); 2755922dab61SIlya Dryomov return lreq; 2756922dab61SIlya Dryomov } 2757922dab61SIlya Dryomov 2758922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2759922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 2760922dab61SIlya Dryomov { 2761922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2762922dab61SIlya Dryomov 2763922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 2764922dab61SIlya Dryomov if (!lreq) 2765922dab61SIlya Dryomov return NULL; 2766922dab61SIlya Dryomov 2767922dab61SIlya Dryomov kref_init(&lreq->kref); 2768922dab61SIlya Dryomov mutex_init(&lreq->lock); 2769922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 2770922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 27714609245eSIlya Dryomov RB_CLEAR_NODE(&lreq->mc_node); 2772922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 2773b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lreq->pending_lworks); 2774922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 277519079203SIlya Dryomov init_completion(&lreq->notify_finish_wait); 2776922dab61SIlya Dryomov 2777922dab61SIlya Dryomov lreq->osdc = osdc; 2778922dab61SIlya Dryomov target_init(&lreq->t); 2779922dab61SIlya Dryomov 2780922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 2781922dab61SIlya Dryomov return lreq; 2782922dab61SIlya Dryomov } 2783922dab61SIlya Dryomov 2784922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 2785922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 27864609245eSIlya Dryomov DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) 2787922dab61SIlya Dryomov 2788922dab61SIlya Dryomov /* 2789922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 2790922dab61SIlya Dryomov * 2791922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 2792922dab61SIlya Dryomov */ 2793922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 2794922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2795922dab61SIlya Dryomov { 2796922dab61SIlya Dryomov verify_osd_locked(osd); 2797922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 2798922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2799922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2800922dab61SIlya Dryomov 2801922dab61SIlya Dryomov if (!osd_homeless(osd)) 2802922dab61SIlya Dryomov __remove_osd_from_lru(osd); 2803922dab61SIlya Dryomov else 2804922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 2805922dab61SIlya Dryomov 2806922dab61SIlya Dryomov get_osd(osd); 2807922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 2808922dab61SIlya Dryomov lreq->osd = osd; 2809922dab61SIlya Dryomov } 2810922dab61SIlya Dryomov 2811922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 2812922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2813922dab61SIlya Dryomov { 2814922dab61SIlya Dryomov verify_osd_locked(osd); 2815922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 2816922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2817922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2818922dab61SIlya Dryomov 2819922dab61SIlya Dryomov lreq->osd = NULL; 2820922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 2821922dab61SIlya Dryomov put_osd(osd); 2822922dab61SIlya Dryomov 2823922dab61SIlya Dryomov if (!osd_homeless(osd)) 2824922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 2825922dab61SIlya Dryomov else 2826922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 2827922dab61SIlya Dryomov } 2828922dab61SIlya Dryomov 2829922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 2830922dab61SIlya Dryomov { 2831922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 2832922dab61SIlya Dryomov 2833922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 2834922dab61SIlya Dryomov } 2835922dab61SIlya Dryomov 2836922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 2837922dab61SIlya Dryomov { 2838922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2839922dab61SIlya Dryomov bool registered; 2840922dab61SIlya Dryomov 2841922dab61SIlya Dryomov down_read(&osdc->lock); 2842922dab61SIlya Dryomov registered = __linger_registered(lreq); 2843922dab61SIlya Dryomov up_read(&osdc->lock); 2844922dab61SIlya Dryomov 2845922dab61SIlya Dryomov return registered; 2846922dab61SIlya Dryomov } 2847922dab61SIlya Dryomov 2848922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 2849922dab61SIlya Dryomov { 2850922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2851922dab61SIlya Dryomov 2852922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2853922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 2854922dab61SIlya Dryomov 2855922dab61SIlya Dryomov linger_get(lreq); 2856922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 2857922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 2858922dab61SIlya Dryomov } 2859922dab61SIlya Dryomov 2860922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 2861922dab61SIlya Dryomov { 2862922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2863922dab61SIlya Dryomov 2864922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2865922dab61SIlya Dryomov 2866922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 2867922dab61SIlya Dryomov linger_put(lreq); 2868922dab61SIlya Dryomov } 2869922dab61SIlya Dryomov 2870922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 2871922dab61SIlya Dryomov { 2872922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2873922dab61SIlya Dryomov 2874922dab61SIlya Dryomov WARN_ON(!req->r_linger); 2875922dab61SIlya Dryomov cancel_request(req); 2876922dab61SIlya Dryomov linger_put(lreq); 2877922dab61SIlya Dryomov } 2878922dab61SIlya Dryomov 2879922dab61SIlya Dryomov struct linger_work { 2880922dab61SIlya Dryomov struct work_struct work; 2881922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2882b07d3c4bSIlya Dryomov struct list_head pending_item; 2883b07d3c4bSIlya Dryomov unsigned long queued_stamp; 2884922dab61SIlya Dryomov 2885922dab61SIlya Dryomov union { 2886922dab61SIlya Dryomov struct { 2887922dab61SIlya Dryomov u64 notify_id; 2888922dab61SIlya Dryomov u64 notifier_id; 2889922dab61SIlya Dryomov void *payload; /* points into @msg front */ 2890922dab61SIlya Dryomov size_t payload_len; 2891922dab61SIlya Dryomov 2892922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 2893922dab61SIlya Dryomov } notify; 2894922dab61SIlya Dryomov struct { 2895922dab61SIlya Dryomov int err; 2896922dab61SIlya Dryomov } error; 2897922dab61SIlya Dryomov }; 2898922dab61SIlya Dryomov }; 2899922dab61SIlya Dryomov 2900922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 2901922dab61SIlya Dryomov work_func_t workfn) 2902922dab61SIlya Dryomov { 2903922dab61SIlya Dryomov struct linger_work *lwork; 2904922dab61SIlya Dryomov 2905922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 2906922dab61SIlya Dryomov if (!lwork) 2907922dab61SIlya Dryomov return NULL; 2908922dab61SIlya Dryomov 2909922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 2910b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lwork->pending_item); 2911922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 2912922dab61SIlya Dryomov 2913922dab61SIlya Dryomov return lwork; 2914922dab61SIlya Dryomov } 2915922dab61SIlya Dryomov 2916922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 2917922dab61SIlya Dryomov { 2918922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2919922dab61SIlya Dryomov 2920b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 2921b07d3c4bSIlya Dryomov list_del(&lwork->pending_item); 2922b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 2923b07d3c4bSIlya Dryomov 2924922dab61SIlya Dryomov linger_put(lreq); 2925922dab61SIlya Dryomov kfree(lwork); 2926922dab61SIlya Dryomov } 2927922dab61SIlya Dryomov 2928922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 2929922dab61SIlya Dryomov { 2930922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2931922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2932922dab61SIlya Dryomov 2933922dab61SIlya Dryomov verify_lreq_locked(lreq); 2934b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lwork->pending_item)); 2935b07d3c4bSIlya Dryomov 2936b07d3c4bSIlya Dryomov lwork->queued_stamp = jiffies; 2937b07d3c4bSIlya Dryomov list_add_tail(&lwork->pending_item, &lreq->pending_lworks); 2938922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 2939922dab61SIlya Dryomov } 2940922dab61SIlya Dryomov 2941922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 2942922dab61SIlya Dryomov { 2943922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2944922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2945922dab61SIlya Dryomov 2946922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2947922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2948922dab61SIlya Dryomov goto out; 2949922dab61SIlya Dryomov } 2950922dab61SIlya Dryomov 295119079203SIlya Dryomov WARN_ON(!lreq->is_watch); 2952922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 2953922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 2954922dab61SIlya Dryomov lwork->notify.payload_len); 2955922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 2956922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 2957922dab61SIlya Dryomov lwork->notify.payload_len); 2958922dab61SIlya Dryomov 2959922dab61SIlya Dryomov out: 2960922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 2961922dab61SIlya Dryomov lwork_free(lwork); 2962922dab61SIlya Dryomov } 2963922dab61SIlya Dryomov 2964922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 2965922dab61SIlya Dryomov { 2966922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2967922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2968922dab61SIlya Dryomov 2969922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2970922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2971922dab61SIlya Dryomov goto out; 2972922dab61SIlya Dryomov } 2973922dab61SIlya Dryomov 2974922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 2975922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 2976922dab61SIlya Dryomov 2977922dab61SIlya Dryomov out: 2978922dab61SIlya Dryomov lwork_free(lwork); 2979922dab61SIlya Dryomov } 2980922dab61SIlya Dryomov 2981922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 2982922dab61SIlya Dryomov { 2983922dab61SIlya Dryomov struct linger_work *lwork; 2984922dab61SIlya Dryomov 2985922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 2986922dab61SIlya Dryomov if (!lwork) { 2987922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 2988922dab61SIlya Dryomov return; 2989922dab61SIlya Dryomov } 2990922dab61SIlya Dryomov 2991922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 2992922dab61SIlya Dryomov lwork_queue(lwork); 2993922dab61SIlya Dryomov } 2994922dab61SIlya Dryomov 2995922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 2996922dab61SIlya Dryomov int result) 2997922dab61SIlya Dryomov { 2998922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 2999922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 3000922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 3001922dab61SIlya Dryomov } 3002922dab61SIlya Dryomov } 3003922dab61SIlya Dryomov 3004922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 3005922dab61SIlya Dryomov { 3006922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 3007922dab61SIlya Dryomov 3008922dab61SIlya Dryomov mutex_lock(&lreq->lock); 3009922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 3010922dab61SIlya Dryomov lreq->linger_id, req->r_result); 3011922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 3012922dab61SIlya Dryomov lreq->committed = true; 3013922dab61SIlya Dryomov 301419079203SIlya Dryomov if (!lreq->is_watch) { 301519079203SIlya Dryomov struct ceph_osd_data *osd_data = 301619079203SIlya Dryomov osd_req_op_data(req, 0, notify, response_data); 301719079203SIlya Dryomov void *p = page_address(osd_data->pages[0]); 301819079203SIlya Dryomov 301919079203SIlya Dryomov WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || 302019079203SIlya Dryomov osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); 302119079203SIlya Dryomov 302219079203SIlya Dryomov /* make note of the notify_id */ 302319079203SIlya Dryomov if (req->r_ops[0].outdata_len >= sizeof(u64)) { 302419079203SIlya Dryomov lreq->notify_id = ceph_decode_64(&p); 302519079203SIlya Dryomov dout("lreq %p notify_id %llu\n", lreq, 302619079203SIlya Dryomov lreq->notify_id); 302719079203SIlya Dryomov } else { 302819079203SIlya Dryomov dout("lreq %p no notify_id\n", lreq); 302919079203SIlya Dryomov } 303019079203SIlya Dryomov } 303119079203SIlya Dryomov 3032922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3033922dab61SIlya Dryomov linger_put(lreq); 3034922dab61SIlya Dryomov } 3035922dab61SIlya Dryomov 3036922dab61SIlya Dryomov static int normalize_watch_error(int err) 3037922dab61SIlya Dryomov { 3038922dab61SIlya Dryomov /* 3039922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 3040922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 3041922dab61SIlya Dryomov * the delete appear the same to the user. 3042922dab61SIlya Dryomov */ 3043922dab61SIlya Dryomov if (err == -ENOENT) 3044922dab61SIlya Dryomov err = -ENOTCONN; 3045922dab61SIlya Dryomov 3046922dab61SIlya Dryomov return err; 3047922dab61SIlya Dryomov } 3048922dab61SIlya Dryomov 3049922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 3050922dab61SIlya Dryomov { 3051922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 3052922dab61SIlya Dryomov 3053922dab61SIlya Dryomov mutex_lock(&lreq->lock); 3054922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 3055922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 3056922dab61SIlya Dryomov if (req->r_result < 0) { 3057922dab61SIlya Dryomov if (!lreq->last_error) { 3058922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 3059922dab61SIlya Dryomov queue_watch_error(lreq); 3060922dab61SIlya Dryomov } 3061922dab61SIlya Dryomov } 3062922dab61SIlya Dryomov 3063922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3064922dab61SIlya Dryomov linger_put(lreq); 3065922dab61SIlya Dryomov } 3066922dab61SIlya Dryomov 3067922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 3068922dab61SIlya Dryomov { 3069922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->reg_req; 3070922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 3071922dab61SIlya Dryomov 3072922dab61SIlya Dryomov verify_osdc_wrlocked(req->r_osdc); 3073922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 3074922dab61SIlya Dryomov 3075922dab61SIlya Dryomov if (req->r_osd) 3076922dab61SIlya Dryomov cancel_linger_request(req); 3077922dab61SIlya Dryomov 3078922dab61SIlya Dryomov request_reinit(req); 30795133ba8fSIlya Dryomov target_copy(&req->r_t, &lreq->t); 3080922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 3081922dab61SIlya Dryomov 3082922dab61SIlya Dryomov mutex_lock(&lreq->lock); 308319079203SIlya Dryomov if (lreq->is_watch && lreq->committed) { 3084922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 3085922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id); 3086922dab61SIlya Dryomov op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; 3087922dab61SIlya Dryomov op->watch.gen = ++lreq->register_gen; 3088922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 3089922dab61SIlya Dryomov op->watch.gen); 3090922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 3091922dab61SIlya Dryomov } else { 309219079203SIlya Dryomov if (!lreq->is_watch) 309319079203SIlya Dryomov lreq->notify_id = 0; 309419079203SIlya Dryomov else 3095922dab61SIlya Dryomov WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); 3096922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 3097922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 3098922dab61SIlya Dryomov } 3099922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3100922dab61SIlya Dryomov 3101922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 3102922dab61SIlya Dryomov req->r_linger = true; 3103922dab61SIlya Dryomov 3104922dab61SIlya Dryomov submit_request(req, true); 3105922dab61SIlya Dryomov } 3106922dab61SIlya Dryomov 3107922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 3108922dab61SIlya Dryomov { 3109922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 3110922dab61SIlya Dryomov 3111922dab61SIlya Dryomov mutex_lock(&lreq->lock); 3112922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 3113922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 3114922dab61SIlya Dryomov lreq->last_error); 3115922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 3116b07d3c4bSIlya Dryomov if (!req->r_result) { 3117b07d3c4bSIlya Dryomov lreq->watch_valid_thru = lreq->ping_sent; 3118b07d3c4bSIlya Dryomov } else if (!lreq->last_error) { 3119922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 3120922dab61SIlya Dryomov queue_watch_error(lreq); 3121922dab61SIlya Dryomov } 3122922dab61SIlya Dryomov } else { 3123922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 3124922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 3125922dab61SIlya Dryomov } 3126922dab61SIlya Dryomov 3127922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3128922dab61SIlya Dryomov linger_put(lreq); 3129922dab61SIlya Dryomov } 3130922dab61SIlya Dryomov 3131922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 3132922dab61SIlya Dryomov { 3133922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3134922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->ping_req; 3135922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 3136922dab61SIlya Dryomov 3137b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 3138922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 3139922dab61SIlya Dryomov return; 3140922dab61SIlya Dryomov } 3141922dab61SIlya Dryomov 3142922dab61SIlya Dryomov lreq->ping_sent = jiffies; 3143922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 3144922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 3145922dab61SIlya Dryomov lreq->register_gen); 3146922dab61SIlya Dryomov 3147922dab61SIlya Dryomov if (req->r_osd) 3148922dab61SIlya Dryomov cancel_linger_request(req); 3149922dab61SIlya Dryomov 3150922dab61SIlya Dryomov request_reinit(req); 3151922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 3152922dab61SIlya Dryomov 3153922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 3154922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id || 3155922dab61SIlya Dryomov op->watch.op != CEPH_OSD_WATCH_OP_PING); 3156922dab61SIlya Dryomov op->watch.gen = lreq->register_gen; 3157922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 3158922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 3159922dab61SIlya Dryomov req->r_linger = true; 3160922dab61SIlya Dryomov 3161922dab61SIlya Dryomov ceph_osdc_get_request(req); 3162922dab61SIlya Dryomov account_request(req); 3163922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 3164922dab61SIlya Dryomov link_request(lreq->osd, req); 3165922dab61SIlya Dryomov send_request(req); 3166922dab61SIlya Dryomov } 3167922dab61SIlya Dryomov 3168922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 3169922dab61SIlya Dryomov { 3170922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3171922dab61SIlya Dryomov struct ceph_osd *osd; 3172922dab61SIlya Dryomov 317381c65213SIlya Dryomov down_write(&osdc->lock); 317481c65213SIlya Dryomov linger_register(lreq); 317581c65213SIlya Dryomov if (lreq->is_watch) { 317681c65213SIlya Dryomov lreq->reg_req->r_ops[0].watch.cookie = lreq->linger_id; 317781c65213SIlya Dryomov lreq->ping_req->r_ops[0].watch.cookie = lreq->linger_id; 317881c65213SIlya Dryomov } else { 317981c65213SIlya Dryomov lreq->reg_req->r_ops[0].notify.cookie = lreq->linger_id; 318081c65213SIlya Dryomov } 318181c65213SIlya Dryomov 31828edf84baSIlya Dryomov calc_target(osdc, &lreq->t, false); 3183922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3184922dab61SIlya Dryomov link_linger(osd, lreq); 3185922dab61SIlya Dryomov 3186922dab61SIlya Dryomov send_linger(lreq); 318781c65213SIlya Dryomov up_write(&osdc->lock); 3188922dab61SIlya Dryomov } 3189922dab61SIlya Dryomov 31904609245eSIlya Dryomov static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) 31914609245eSIlya Dryomov { 31924609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 31934609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 31944609245eSIlya Dryomov 31954609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 31964609245eSIlya Dryomov 31974609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 31984609245eSIlya Dryomov lreq->linger_id); 31994609245eSIlya Dryomov if (!lookup_lreq) 32004609245eSIlya Dryomov return; 32014609245eSIlya Dryomov 32024609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 32034609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 32044609245eSIlya Dryomov linger_put(lreq); 32054609245eSIlya Dryomov } 32064609245eSIlya Dryomov 3207922dab61SIlya Dryomov /* 3208922dab61SIlya Dryomov * @lreq has to be both registered and linked. 3209922dab61SIlya Dryomov */ 3210922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 3211922dab61SIlya Dryomov { 321219079203SIlya Dryomov if (lreq->is_watch && lreq->ping_req->r_osd) 3213922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 3214922dab61SIlya Dryomov if (lreq->reg_req->r_osd) 3215922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 32164609245eSIlya Dryomov cancel_linger_map_check(lreq); 3217922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3218922dab61SIlya Dryomov linger_unregister(lreq); 3219922dab61SIlya Dryomov } 3220922dab61SIlya Dryomov 3221922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 3222922dab61SIlya Dryomov { 3223922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3224922dab61SIlya Dryomov 3225922dab61SIlya Dryomov down_write(&osdc->lock); 3226922dab61SIlya Dryomov if (__linger_registered(lreq)) 3227922dab61SIlya Dryomov __linger_cancel(lreq); 3228922dab61SIlya Dryomov up_write(&osdc->lock); 3229922dab61SIlya Dryomov } 3230922dab61SIlya Dryomov 32314609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq); 32324609245eSIlya Dryomov 32334609245eSIlya Dryomov static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) 32344609245eSIlya Dryomov { 32354609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 32364609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 32374609245eSIlya Dryomov 32384609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 32394609245eSIlya Dryomov WARN_ON(!map->epoch); 32404609245eSIlya Dryomov 32414609245eSIlya Dryomov if (lreq->register_gen) { 32424609245eSIlya Dryomov lreq->map_dne_bound = map->epoch; 32434609245eSIlya Dryomov dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, 32444609245eSIlya Dryomov lreq, lreq->linger_id); 32454609245eSIlya Dryomov } else { 32464609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", 32474609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 32484609245eSIlya Dryomov map->epoch); 32494609245eSIlya Dryomov } 32504609245eSIlya Dryomov 32514609245eSIlya Dryomov if (lreq->map_dne_bound) { 32524609245eSIlya Dryomov if (map->epoch >= lreq->map_dne_bound) { 32534609245eSIlya Dryomov /* we had a new enough map */ 32544609245eSIlya Dryomov pr_info("linger_id %llu pool does not exist\n", 32554609245eSIlya Dryomov lreq->linger_id); 32564609245eSIlya Dryomov linger_reg_commit_complete(lreq, -ENOENT); 32574609245eSIlya Dryomov __linger_cancel(lreq); 32584609245eSIlya Dryomov } 32594609245eSIlya Dryomov } else { 32604609245eSIlya Dryomov send_linger_map_check(lreq); 32614609245eSIlya Dryomov } 32624609245eSIlya Dryomov } 32634609245eSIlya Dryomov 32644609245eSIlya Dryomov static void linger_map_check_cb(struct ceph_mon_generic_request *greq) 32654609245eSIlya Dryomov { 32664609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 32674609245eSIlya Dryomov struct ceph_osd_linger_request *lreq; 32684609245eSIlya Dryomov u64 linger_id = greq->private_data; 32694609245eSIlya Dryomov 32704609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 32714609245eSIlya Dryomov 32724609245eSIlya Dryomov down_write(&osdc->lock); 32734609245eSIlya Dryomov lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); 32744609245eSIlya Dryomov if (!lreq) { 32754609245eSIlya Dryomov dout("%s linger_id %llu dne\n", __func__, linger_id); 32764609245eSIlya Dryomov goto out_unlock; 32774609245eSIlya Dryomov } 32784609245eSIlya Dryomov 32794609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", 32804609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 32814609245eSIlya Dryomov greq->u.newest); 32824609245eSIlya Dryomov if (!lreq->map_dne_bound) 32834609245eSIlya Dryomov lreq->map_dne_bound = greq->u.newest; 32844609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 32854609245eSIlya Dryomov check_linger_pool_dne(lreq); 32864609245eSIlya Dryomov 32874609245eSIlya Dryomov linger_put(lreq); 32884609245eSIlya Dryomov out_unlock: 32894609245eSIlya Dryomov up_write(&osdc->lock); 32904609245eSIlya Dryomov } 32914609245eSIlya Dryomov 32924609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq) 32934609245eSIlya Dryomov { 32944609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 32954609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 32964609245eSIlya Dryomov int ret; 32974609245eSIlya Dryomov 32984609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 32994609245eSIlya Dryomov 33004609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 33014609245eSIlya Dryomov lreq->linger_id); 33024609245eSIlya Dryomov if (lookup_lreq) { 33034609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 33044609245eSIlya Dryomov return; 33054609245eSIlya Dryomov } 33064609245eSIlya Dryomov 33074609245eSIlya Dryomov linger_get(lreq); 33084609245eSIlya Dryomov insert_linger_mc(&osdc->linger_map_checks, lreq); 33094609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 33104609245eSIlya Dryomov linger_map_check_cb, lreq->linger_id); 33114609245eSIlya Dryomov WARN_ON(ret); 33124609245eSIlya Dryomov } 33134609245eSIlya Dryomov 3314922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 3315922dab61SIlya Dryomov { 3316922dab61SIlya Dryomov int ret; 3317922dab61SIlya Dryomov 3318922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 3319922dab61SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); 3320922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 3321922dab61SIlya Dryomov } 3322922dab61SIlya Dryomov 332319079203SIlya Dryomov static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) 332419079203SIlya Dryomov { 332519079203SIlya Dryomov int ret; 332619079203SIlya Dryomov 332719079203SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 332819079203SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); 332919079203SIlya Dryomov return ret ?: lreq->notify_finish_error; 333019079203SIlya Dryomov } 333119079203SIlya Dryomov 3332922dab61SIlya Dryomov /* 3333fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 3334fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 3335fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 3336fbca9635SIlya Dryomov * reset is detected. 33373d14c5d2SYehuda Sadeh */ 33383d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 33393d14c5d2SYehuda Sadeh { 33403d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 33413d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 3342a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 33435aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 33447cc5e38fSIlya Dryomov unsigned long expiry_cutoff = jiffies - opts->osd_request_timeout; 33455aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 33465aea3dcdSIlya Dryomov struct rb_node *n, *p; 33473d14c5d2SYehuda Sadeh 33485aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 33495aea3dcdSIlya Dryomov down_write(&osdc->lock); 33503d14c5d2SYehuda Sadeh 33513d14c5d2SYehuda Sadeh /* 33523d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 33533d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 33543d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 33553d14c5d2SYehuda Sadeh */ 33565aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 33575aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 33585aea3dcdSIlya Dryomov bool found = false; 33593d14c5d2SYehuda Sadeh 33607cc5e38fSIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 33615aea3dcdSIlya Dryomov struct ceph_osd_request *req = 33625aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 33635aea3dcdSIlya Dryomov 33647cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 33657cc5e38fSIlya Dryomov 33665aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 33675aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 33685aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 33695aea3dcdSIlya Dryomov found = true; 33705aea3dcdSIlya Dryomov } 33717cc5e38fSIlya Dryomov if (opts->osd_request_timeout && 33727cc5e38fSIlya Dryomov time_before(req->r_start_stamp, expiry_cutoff)) { 33737cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 33747cc5e38fSIlya Dryomov req->r_tid, osd->o_osd); 33757cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 33767cc5e38fSIlya Dryomov } 33775aea3dcdSIlya Dryomov } 3378922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 3379922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3380922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 3381922dab61SIlya Dryomov 3382922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 3383922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 3384922dab61SIlya Dryomov found = true; 3385922dab61SIlya Dryomov 3386922dab61SIlya Dryomov mutex_lock(&lreq->lock); 338719079203SIlya Dryomov if (lreq->is_watch && lreq->committed && !lreq->last_error) 3388922dab61SIlya Dryomov send_linger_ping(lreq); 3389922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3390922dab61SIlya Dryomov } 33915aea3dcdSIlya Dryomov 33925aea3dcdSIlya Dryomov if (found) 33933d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 33943d14c5d2SYehuda Sadeh } 33955aea3dcdSIlya Dryomov 33967cc5e38fSIlya Dryomov if (opts->osd_request_timeout) { 33977cc5e38fSIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 33987cc5e38fSIlya Dryomov struct ceph_osd_request *req = 33997cc5e38fSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 34007cc5e38fSIlya Dryomov 34017cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 34027cc5e38fSIlya Dryomov 34037cc5e38fSIlya Dryomov if (time_before(req->r_start_stamp, expiry_cutoff)) { 34047cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 34057cc5e38fSIlya Dryomov req->r_tid, osdc->homeless_osd.o_osd); 34067cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 34077cc5e38fSIlya Dryomov } 34087cc5e38fSIlya Dryomov } 34097cc5e38fSIlya Dryomov } 34107cc5e38fSIlya Dryomov 34115aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 34125aea3dcdSIlya Dryomov maybe_request_map(osdc); 34135aea3dcdSIlya Dryomov 34143d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 34155aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 34165aea3dcdSIlya Dryomov struct ceph_osd, 34173d14c5d2SYehuda Sadeh o_keepalive_item); 34183d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 34193d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 34203d14c5d2SYehuda Sadeh } 34213d14c5d2SYehuda Sadeh 34225aea3dcdSIlya Dryomov up_write(&osdc->lock); 3423fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 3424fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 34253d14c5d2SYehuda Sadeh } 34263d14c5d2SYehuda Sadeh 34273d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 34283d14c5d2SYehuda Sadeh { 34293d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 34303d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 34313d14c5d2SYehuda Sadeh osds_timeout_work.work); 3432a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 343342a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 34343d14c5d2SYehuda Sadeh 343542a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 34365aea3dcdSIlya Dryomov down_write(&osdc->lock); 343742a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 343842a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 343942a2c09fSIlya Dryomov break; 344042a2c09fSIlya Dryomov 34415aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 3442922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 34435aea3dcdSIlya Dryomov close_osd(osd); 344442a2c09fSIlya Dryomov } 344542a2c09fSIlya Dryomov 34465aea3dcdSIlya Dryomov up_write(&osdc->lock); 34473d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 34483d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 34493d14c5d2SYehuda Sadeh } 34503d14c5d2SYehuda Sadeh 3451205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 3452205ee118SIlya Dryomov struct ceph_object_locator *oloc) 3453205ee118SIlya Dryomov { 3454205ee118SIlya Dryomov u8 struct_v, struct_cv; 3455205ee118SIlya Dryomov u32 len; 3456205ee118SIlya Dryomov void *struct_end; 3457205ee118SIlya Dryomov int ret = 0; 3458205ee118SIlya Dryomov 3459205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3460205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3461205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3462205ee118SIlya Dryomov if (struct_v < 3) { 3463205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 3464205ee118SIlya Dryomov struct_v, struct_cv); 3465205ee118SIlya Dryomov goto e_inval; 3466205ee118SIlya Dryomov } 3467205ee118SIlya Dryomov if (struct_cv > 6) { 3468205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 3469205ee118SIlya Dryomov struct_v, struct_cv); 3470205ee118SIlya Dryomov goto e_inval; 3471205ee118SIlya Dryomov } 3472205ee118SIlya Dryomov len = ceph_decode_32(p); 3473205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3474205ee118SIlya Dryomov struct_end = *p + len; 3475205ee118SIlya Dryomov 3476205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 3477205ee118SIlya Dryomov *p += 4; /* skip preferred */ 3478205ee118SIlya Dryomov 3479205ee118SIlya Dryomov len = ceph_decode_32(p); 3480205ee118SIlya Dryomov if (len > 0) { 3481205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 3482205ee118SIlya Dryomov goto e_inval; 3483205ee118SIlya Dryomov } 3484205ee118SIlya Dryomov 3485205ee118SIlya Dryomov if (struct_v >= 5) { 3486cd08e0a2SYan, Zheng bool changed = false; 3487cd08e0a2SYan, Zheng 3488205ee118SIlya Dryomov len = ceph_decode_32(p); 3489205ee118SIlya Dryomov if (len > 0) { 349030c156d9SYan, Zheng ceph_decode_need(p, end, len, e_inval); 3491cd08e0a2SYan, Zheng if (!oloc->pool_ns || 3492cd08e0a2SYan, Zheng ceph_compare_string(oloc->pool_ns, *p, len)) 3493cd08e0a2SYan, Zheng changed = true; 349430c156d9SYan, Zheng *p += len; 3495cd08e0a2SYan, Zheng } else { 3496cd08e0a2SYan, Zheng if (oloc->pool_ns) 3497cd08e0a2SYan, Zheng changed = true; 3498cd08e0a2SYan, Zheng } 3499cd08e0a2SYan, Zheng if (changed) { 3500cd08e0a2SYan, Zheng /* redirect changes namespace */ 3501cd08e0a2SYan, Zheng pr_warn("ceph_object_locator::nspace is changed\n"); 3502cd08e0a2SYan, Zheng goto e_inval; 3503205ee118SIlya Dryomov } 3504205ee118SIlya Dryomov } 3505205ee118SIlya Dryomov 3506205ee118SIlya Dryomov if (struct_v >= 6) { 3507205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 3508205ee118SIlya Dryomov if (hash != -1) { 3509205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 3510205ee118SIlya Dryomov goto e_inval; 3511205ee118SIlya Dryomov } 3512205ee118SIlya Dryomov } 3513205ee118SIlya Dryomov 3514205ee118SIlya Dryomov /* skip the rest */ 3515205ee118SIlya Dryomov *p = struct_end; 3516205ee118SIlya Dryomov out: 3517205ee118SIlya Dryomov return ret; 3518205ee118SIlya Dryomov 3519205ee118SIlya Dryomov e_inval: 3520205ee118SIlya Dryomov ret = -EINVAL; 3521205ee118SIlya Dryomov goto out; 3522205ee118SIlya Dryomov } 3523205ee118SIlya Dryomov 3524205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 3525205ee118SIlya Dryomov struct ceph_request_redirect *redir) 3526205ee118SIlya Dryomov { 3527205ee118SIlya Dryomov u8 struct_v, struct_cv; 3528205ee118SIlya Dryomov u32 len; 3529205ee118SIlya Dryomov void *struct_end; 3530205ee118SIlya Dryomov int ret; 3531205ee118SIlya Dryomov 3532205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3533205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3534205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3535205ee118SIlya Dryomov if (struct_cv > 1) { 3536205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 3537205ee118SIlya Dryomov struct_v, struct_cv); 3538205ee118SIlya Dryomov goto e_inval; 3539205ee118SIlya Dryomov } 3540205ee118SIlya Dryomov len = ceph_decode_32(p); 3541205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3542205ee118SIlya Dryomov struct_end = *p + len; 3543205ee118SIlya Dryomov 3544205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 3545205ee118SIlya Dryomov if (ret) 3546205ee118SIlya Dryomov goto out; 3547205ee118SIlya Dryomov 3548205ee118SIlya Dryomov len = ceph_decode_32(p); 3549205ee118SIlya Dryomov if (len > 0) { 3550205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 3551205ee118SIlya Dryomov goto e_inval; 3552205ee118SIlya Dryomov } 3553205ee118SIlya Dryomov 3554205ee118SIlya Dryomov /* skip the rest */ 3555205ee118SIlya Dryomov *p = struct_end; 3556205ee118SIlya Dryomov out: 3557205ee118SIlya Dryomov return ret; 3558205ee118SIlya Dryomov 3559205ee118SIlya Dryomov e_inval: 3560205ee118SIlya Dryomov ret = -EINVAL; 3561205ee118SIlya Dryomov goto out; 3562205ee118SIlya Dryomov } 3563205ee118SIlya Dryomov 3564fe5da05eSIlya Dryomov struct MOSDOpReply { 3565fe5da05eSIlya Dryomov struct ceph_pg pgid; 3566fe5da05eSIlya Dryomov u64 flags; 3567fe5da05eSIlya Dryomov int result; 3568fe5da05eSIlya Dryomov u32 epoch; 3569fe5da05eSIlya Dryomov int num_ops; 3570fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 3571fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 3572fe5da05eSIlya Dryomov int retry_attempt; 3573fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 3574fe5da05eSIlya Dryomov u64 user_version; 3575fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 3576fe5da05eSIlya Dryomov }; 357725845472SSage Weil 3578fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 35793d14c5d2SYehuda Sadeh { 3580fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 3581fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 3582fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 3583fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 3584b0b31a8fSIlya Dryomov u8 decode_redir; 3585fe5da05eSIlya Dryomov u32 len; 3586fe5da05eSIlya Dryomov int ret; 3587fe5da05eSIlya Dryomov int i; 35883d14c5d2SYehuda Sadeh 3589fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 3590fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 3591fe5da05eSIlya Dryomov p += len; /* skip oid */ 35921b83bef2SSage Weil 3593fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 3594fe5da05eSIlya Dryomov if (ret) 3595fe5da05eSIlya Dryomov return ret; 35961b83bef2SSage Weil 3597fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 3598fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 3599fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 3600fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 3601fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 3602fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 36031b83bef2SSage Weil 3604fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 3605fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 3606fe5da05eSIlya Dryomov goto e_inval; 36071b83bef2SSage Weil 3608fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 3609fe5da05eSIlya Dryomov e_inval); 3610fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 36111b83bef2SSage Weil struct ceph_osd_op *op = p; 36121b83bef2SSage Weil 3613fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 36141b83bef2SSage Weil p += sizeof(*op); 36151b83bef2SSage Weil } 3616fe5da05eSIlya Dryomov 3617fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 3618fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 3619fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 3620fe5da05eSIlya Dryomov 3621fe5da05eSIlya Dryomov if (version >= 5) { 3622fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 3623fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 3624fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 3625fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 3626fe5da05eSIlya Dryomov } else { 3627fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 3628fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 36291b83bef2SSage Weil } 36301b83bef2SSage Weil 3631fe5da05eSIlya Dryomov if (version >= 6) { 3632fe5da05eSIlya Dryomov if (version >= 7) 3633fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 3634b0b31a8fSIlya Dryomov else 3635b0b31a8fSIlya Dryomov decode_redir = 1; 3636b0b31a8fSIlya Dryomov } else { 3637b0b31a8fSIlya Dryomov decode_redir = 0; 3638b0b31a8fSIlya Dryomov } 3639b0b31a8fSIlya Dryomov 3640b0b31a8fSIlya Dryomov if (decode_redir) { 3641fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 3642fe5da05eSIlya Dryomov if (ret) 3643fe5da05eSIlya Dryomov return ret; 3644205ee118SIlya Dryomov } else { 3645fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 3646205ee118SIlya Dryomov } 3647205ee118SIlya Dryomov 3648fe5da05eSIlya Dryomov return 0; 3649205ee118SIlya Dryomov 3650fe5da05eSIlya Dryomov e_inval: 3651fe5da05eSIlya Dryomov return -EINVAL; 3652fe5da05eSIlya Dryomov } 3653fe5da05eSIlya Dryomov 3654fe5da05eSIlya Dryomov /* 3655b18b9550SIlya Dryomov * Handle MOSDOpReply. Set ->r_result and call the callback if it is 3656b18b9550SIlya Dryomov * specified. 3657fe5da05eSIlya Dryomov */ 36585aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 3659fe5da05eSIlya Dryomov { 36605aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 3661fe5da05eSIlya Dryomov struct ceph_osd_request *req; 3662fe5da05eSIlya Dryomov struct MOSDOpReply m; 3663fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 3664fe5da05eSIlya Dryomov u32 data_len = 0; 3665fe5da05eSIlya Dryomov int ret; 3666fe5da05eSIlya Dryomov int i; 3667fe5da05eSIlya Dryomov 3668fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 3669fe5da05eSIlya Dryomov 36705aea3dcdSIlya Dryomov down_read(&osdc->lock); 36715aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 36725aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 36735aea3dcdSIlya Dryomov goto out_unlock_osdc; 3674fe5da05eSIlya Dryomov } 36755aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 36765aea3dcdSIlya Dryomov 36775aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 36785aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 36795aea3dcdSIlya Dryomov if (!req) { 36805aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 36815aea3dcdSIlya Dryomov goto out_unlock_session; 36825aea3dcdSIlya Dryomov } 3683fe5da05eSIlya Dryomov 3684cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns; 3685fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 3686cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = NULL; 3687fe5da05eSIlya Dryomov if (ret) { 3688fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 3689fe5da05eSIlya Dryomov req->r_tid, ret); 3690fe5da05eSIlya Dryomov ceph_msg_dump(msg); 3691fe5da05eSIlya Dryomov goto fail_request; 3692fe5da05eSIlya Dryomov } 3693fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 3694fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 3695fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 3696fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 3697fe5da05eSIlya Dryomov 3698fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 3699fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 3700fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 3701fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 3702fe5da05eSIlya Dryomov req->r_attempts - 1); 37035aea3dcdSIlya Dryomov goto out_unlock_session; 3704fe5da05eSIlya Dryomov } 3705fe5da05eSIlya Dryomov } else { 3706fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 3707fe5da05eSIlya Dryomov } 3708fe5da05eSIlya Dryomov 3709fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 3710fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 3711fe5da05eSIlya Dryomov m.redirect.oloc.pool); 37125aea3dcdSIlya Dryomov unlink_request(osd, req); 37135aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 3714205ee118SIlya Dryomov 371530c156d9SYan, Zheng /* 371630c156d9SYan, Zheng * Not ceph_oloc_copy() - changing pool_ns is not 371730c156d9SYan, Zheng * supported. 371830c156d9SYan, Zheng */ 371930c156d9SYan, Zheng req->r_t.target_oloc.pool = m.redirect.oloc.pool; 3720890bd0f8SJerry Lee req->r_flags |= CEPH_OSD_FLAG_REDIRECTED | 3721890bd0f8SJerry Lee CEPH_OSD_FLAG_IGNORE_OVERLAY | 3722890bd0f8SJerry Lee CEPH_OSD_FLAG_IGNORE_CACHE; 37235aea3dcdSIlya Dryomov req->r_tid = 0; 37245aea3dcdSIlya Dryomov __submit_request(req, false); 37255aea3dcdSIlya Dryomov goto out_unlock_osdc; 3726205ee118SIlya Dryomov } 3727205ee118SIlya Dryomov 3728117d96a0SIlya Dryomov if (m.result == -EAGAIN) { 3729117d96a0SIlya Dryomov dout("req %p tid %llu EAGAIN\n", req, req->r_tid); 3730117d96a0SIlya Dryomov unlink_request(osd, req); 3731117d96a0SIlya Dryomov mutex_unlock(&osd->lock); 3732117d96a0SIlya Dryomov 3733117d96a0SIlya Dryomov /* 3734117d96a0SIlya Dryomov * The object is missing on the replica or not (yet) 3735117d96a0SIlya Dryomov * readable. Clear pgid to force a resend to the primary 3736117d96a0SIlya Dryomov * via legacy_change. 3737117d96a0SIlya Dryomov */ 3738117d96a0SIlya Dryomov req->r_t.pgid.pool = 0; 3739117d96a0SIlya Dryomov req->r_t.pgid.seed = 0; 3740117d96a0SIlya Dryomov WARN_ON(!req->r_t.used_replica); 3741117d96a0SIlya Dryomov req->r_flags &= ~(CEPH_OSD_FLAG_BALANCE_READS | 3742117d96a0SIlya Dryomov CEPH_OSD_FLAG_LOCALIZE_READS); 3743117d96a0SIlya Dryomov req->r_tid = 0; 3744117d96a0SIlya Dryomov __submit_request(req, false); 3745117d96a0SIlya Dryomov goto out_unlock_osdc; 3746117d96a0SIlya Dryomov } 3747117d96a0SIlya Dryomov 3748fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 3749fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 3750fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 3751fe5da05eSIlya Dryomov goto fail_request; 3752fe5da05eSIlya Dryomov } 3753fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 3754fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 3755fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 3756fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 3757fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 3758fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 3759fe5da05eSIlya Dryomov } 3760fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 3761fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 3762fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 3763fe5da05eSIlya Dryomov goto fail_request; 3764fe5da05eSIlya Dryomov } 3765b18b9550SIlya Dryomov dout("%s req %p tid %llu result %d data_len %u\n", __func__, 3766b18b9550SIlya Dryomov req, req->r_tid, m.result, data_len); 37673d14c5d2SYehuda Sadeh 3768b18b9550SIlya Dryomov /* 3769b18b9550SIlya Dryomov * Since we only ever request ONDISK, we should only ever get 3770b18b9550SIlya Dryomov * one (type of) reply back. 3771b18b9550SIlya Dryomov */ 3772b18b9550SIlya Dryomov WARN_ON(!(m.flags & CEPH_OSD_FLAG_ONDISK)); 3773fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 377445ee2c1dSIlya Dryomov finish_request(req); 37755aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 37765aea3dcdSIlya Dryomov up_read(&osdc->lock); 37773d14c5d2SYehuda Sadeh 3778fe5da05eSIlya Dryomov __complete_request(req); 37793d14c5d2SYehuda Sadeh return; 3780fe5da05eSIlya Dryomov 3781fe5da05eSIlya Dryomov fail_request: 37824609245eSIlya Dryomov complete_request(req, -EIO); 37835aea3dcdSIlya Dryomov out_unlock_session: 37845aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 37855aea3dcdSIlya Dryomov out_unlock_osdc: 37865aea3dcdSIlya Dryomov up_read(&osdc->lock); 37873d14c5d2SYehuda Sadeh } 37883d14c5d2SYehuda Sadeh 378942c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 379042c1b124SIlya Dryomov { 379142c1b124SIlya Dryomov struct rb_node *n; 379242c1b124SIlya Dryomov 379342c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 379442c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 379542c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 379642c1b124SIlya Dryomov 379742c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 379842c1b124SIlya Dryomov } 379942c1b124SIlya Dryomov } 380042c1b124SIlya Dryomov 38015aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 38023d14c5d2SYehuda Sadeh { 38035aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 38043d14c5d2SYehuda Sadeh 38055aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 38065aea3dcdSIlya Dryomov if (!pi) 38075aea3dcdSIlya Dryomov return false; 38083d14c5d2SYehuda Sadeh 38095aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 38103d14c5d2SYehuda Sadeh } 38113d14c5d2SYehuda Sadeh 3812922dab61SIlya Dryomov static enum calc_target_result 3813922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 3814922dab61SIlya Dryomov { 3815922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3816922dab61SIlya Dryomov enum calc_target_result ct_res; 3817922dab61SIlya Dryomov 38188edf84baSIlya Dryomov ct_res = calc_target(osdc, &lreq->t, true); 3819922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 3820922dab61SIlya Dryomov struct ceph_osd *osd; 3821922dab61SIlya Dryomov 3822922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3823922dab61SIlya Dryomov if (osd != lreq->osd) { 3824922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3825922dab61SIlya Dryomov link_linger(osd, lreq); 3826922dab61SIlya Dryomov } 3827922dab61SIlya Dryomov } 3828922dab61SIlya Dryomov 3829922dab61SIlya Dryomov return ct_res; 3830922dab61SIlya Dryomov } 3831922dab61SIlya Dryomov 38323d14c5d2SYehuda Sadeh /* 38335aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 38343d14c5d2SYehuda Sadeh */ 38355aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 38365aea3dcdSIlya Dryomov bool force_resend, 38375aea3dcdSIlya Dryomov bool cleared_full, 38385aea3dcdSIlya Dryomov bool check_pool_cleared_full, 38395aea3dcdSIlya Dryomov struct rb_root *need_resend, 38405aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 38413d14c5d2SYehuda Sadeh { 38425aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 38435aea3dcdSIlya Dryomov struct rb_node *n; 38445aea3dcdSIlya Dryomov bool force_resend_writes; 38453d14c5d2SYehuda Sadeh 3846922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 3847922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3848922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3849922dab61SIlya Dryomov enum calc_target_result ct_res; 3850922dab61SIlya Dryomov 3851922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 3852922dab61SIlya Dryomov 3853922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 3854922dab61SIlya Dryomov lreq->linger_id); 3855922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 3856922dab61SIlya Dryomov switch (ct_res) { 3857922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 3858922dab61SIlya Dryomov force_resend_writes = cleared_full || 3859922dab61SIlya Dryomov (check_pool_cleared_full && 3860922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 3861922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 3862922dab61SIlya Dryomov break; 3863922dab61SIlya Dryomov 3864922dab61SIlya Dryomov /* fall through */ 3865922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 38664609245eSIlya Dryomov cancel_linger_map_check(lreq); 3867922dab61SIlya Dryomov /* 3868922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 3869922dab61SIlya Dryomov * may have already added it to the list, since 3870922dab61SIlya Dryomov * it's not unlinked here. 3871922dab61SIlya Dryomov */ 3872922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 3873922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 3874922dab61SIlya Dryomov break; 3875922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 3876a10bcb19SIlya Dryomov list_del_init(&lreq->scan_item); 38774609245eSIlya Dryomov check_linger_pool_dne(lreq); 3878922dab61SIlya Dryomov break; 3879922dab61SIlya Dryomov } 3880922dab61SIlya Dryomov } 3881922dab61SIlya Dryomov 38825aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 38835aea3dcdSIlya Dryomov struct ceph_osd_request *req = 38845aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 38855aea3dcdSIlya Dryomov enum calc_target_result ct_res; 3886ab60b16dSAlex Elder 38874609245eSIlya Dryomov n = rb_next(n); /* unlink_request(), check_pool_dne() */ 3888ab60b16dSAlex Elder 38895aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 38908edf84baSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, false); 38915aea3dcdSIlya Dryomov switch (ct_res) { 38925aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 38935aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 38945aea3dcdSIlya Dryomov (check_pool_cleared_full && 38955aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 38965aea3dcdSIlya Dryomov if (!force_resend && 38975aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 38985aea3dcdSIlya Dryomov !force_resend_writes)) 38995aea3dcdSIlya Dryomov break; 3900a40c4f10SYehuda Sadeh 39015aea3dcdSIlya Dryomov /* fall through */ 39025aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 39034609245eSIlya Dryomov cancel_map_check(req); 39045aea3dcdSIlya Dryomov unlink_request(osd, req); 39055aea3dcdSIlya Dryomov insert_request(need_resend, req); 39065aea3dcdSIlya Dryomov break; 39075aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 39084609245eSIlya Dryomov check_pool_dne(req); 39095aea3dcdSIlya Dryomov break; 3910a40c4f10SYehuda Sadeh } 39113d14c5d2SYehuda Sadeh } 39123d14c5d2SYehuda Sadeh } 39136f6c7006SSage Weil 391442c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 39155aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 39165aea3dcdSIlya Dryomov struct rb_root *need_resend, 39175aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 391842c1b124SIlya Dryomov { 391942c1b124SIlya Dryomov struct ceph_osdmap *newmap; 392042c1b124SIlya Dryomov struct rb_node *n; 392142c1b124SIlya Dryomov bool skipped_map = false; 392242c1b124SIlya Dryomov bool was_full; 392342c1b124SIlya Dryomov 3924b7ec35b3SIlya Dryomov was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 392542c1b124SIlya Dryomov set_pool_was_full(osdc); 392642c1b124SIlya Dryomov 392742c1b124SIlya Dryomov if (incremental) 392842c1b124SIlya Dryomov newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); 392942c1b124SIlya Dryomov else 393042c1b124SIlya Dryomov newmap = ceph_osdmap_decode(&p, end); 393142c1b124SIlya Dryomov if (IS_ERR(newmap)) 393242c1b124SIlya Dryomov return PTR_ERR(newmap); 393342c1b124SIlya Dryomov 393442c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 393542c1b124SIlya Dryomov /* 393642c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 393742c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 393842c1b124SIlya Dryomov * should be false. 393942c1b124SIlya Dryomov */ 394042c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 394142c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 394242c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 394342c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 394442c1b124SIlya Dryomov 394542c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 394642c1b124SIlya Dryomov if (old_pi) 394742c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 394842c1b124SIlya Dryomov else 394942c1b124SIlya Dryomov WARN_ON(pi->was_full); 395042c1b124SIlya Dryomov } 395142c1b124SIlya Dryomov 395242c1b124SIlya Dryomov if (osdc->osdmap->epoch && 395342c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 395442c1b124SIlya Dryomov WARN_ON(incremental); 395542c1b124SIlya Dryomov skipped_map = true; 395642c1b124SIlya Dryomov } 395742c1b124SIlya Dryomov 395842c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 395942c1b124SIlya Dryomov osdc->osdmap = newmap; 396042c1b124SIlya Dryomov } 396142c1b124SIlya Dryomov 3962b7ec35b3SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 39635aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 39645aea3dcdSIlya Dryomov need_resend, need_resend_linger); 39655aea3dcdSIlya Dryomov 39665aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 39675aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 39685aea3dcdSIlya Dryomov 39695aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 39705aea3dcdSIlya Dryomov 39715aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 39725aea3dcdSIlya Dryomov need_resend_linger); 39735aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 39745aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 39755aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 39765aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 39775aea3dcdSIlya Dryomov close_osd(osd); 39785aea3dcdSIlya Dryomov } 397942c1b124SIlya Dryomov 398042c1b124SIlya Dryomov return 0; 398142c1b124SIlya Dryomov } 39826f6c7006SSage Weil 39835aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 39845aea3dcdSIlya Dryomov struct rb_root *need_resend, 39855aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 39865aea3dcdSIlya Dryomov { 3987922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 398804c7d789SIlya Dryomov enum calc_target_result ct_res; 39895aea3dcdSIlya Dryomov struct rb_node *n; 39905aea3dcdSIlya Dryomov 399104c7d789SIlya Dryomov /* make sure need_resend targets reflect latest map */ 399204c7d789SIlya Dryomov for (n = rb_first(need_resend); n; ) { 399304c7d789SIlya Dryomov struct ceph_osd_request *req = 399404c7d789SIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 399504c7d789SIlya Dryomov 399604c7d789SIlya Dryomov n = rb_next(n); 399704c7d789SIlya Dryomov 399804c7d789SIlya Dryomov if (req->r_t.epoch < osdc->osdmap->epoch) { 39998edf84baSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, false); 400004c7d789SIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) { 400104c7d789SIlya Dryomov erase_request(need_resend, req); 400204c7d789SIlya Dryomov check_pool_dne(req); 400304c7d789SIlya Dryomov } 400404c7d789SIlya Dryomov } 400504c7d789SIlya Dryomov } 400604c7d789SIlya Dryomov 40075aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 40085aea3dcdSIlya Dryomov struct ceph_osd_request *req = 40095aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 40105aea3dcdSIlya Dryomov struct ceph_osd *osd; 40115aea3dcdSIlya Dryomov 40125aea3dcdSIlya Dryomov n = rb_next(n); 40135aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 40145aea3dcdSIlya Dryomov 40155aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 40165aea3dcdSIlya Dryomov link_request(osd, req); 40175aea3dcdSIlya Dryomov if (!req->r_linger) { 40185aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 40195aea3dcdSIlya Dryomov send_request(req); 4020922dab61SIlya Dryomov } else { 4021922dab61SIlya Dryomov cancel_linger_request(req); 40225aea3dcdSIlya Dryomov } 40235aea3dcdSIlya Dryomov } 4024922dab61SIlya Dryomov 4025922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 4026922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 4027922dab61SIlya Dryomov send_linger(lreq); 4028922dab61SIlya Dryomov 4029922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 4030922dab61SIlya Dryomov } 40315aea3dcdSIlya Dryomov } 40325aea3dcdSIlya Dryomov 40333d14c5d2SYehuda Sadeh /* 40343d14c5d2SYehuda Sadeh * Process updated osd map. 40353d14c5d2SYehuda Sadeh * 40363d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 40373d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 40383d14c5d2SYehuda Sadeh * off to different OSDs as needed. 40393d14c5d2SYehuda Sadeh */ 40403d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 40413d14c5d2SYehuda Sadeh { 404242c1b124SIlya Dryomov void *p = msg->front.iov_base; 404342c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 40443d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 40453d14c5d2SYehuda Sadeh u32 epoch; 40463d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 40475aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 40485aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 404942c1b124SIlya Dryomov bool handled_incremental = false; 405042c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 405142c1b124SIlya Dryomov bool pauserd, pausewr; 405242c1b124SIlya Dryomov int err; 40533d14c5d2SYehuda Sadeh 405442c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 40555aea3dcdSIlya Dryomov down_write(&osdc->lock); 40563d14c5d2SYehuda Sadeh 40573d14c5d2SYehuda Sadeh /* verify fsid */ 40583d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 40593d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 40603d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 406142c1b124SIlya Dryomov goto bad; 40623d14c5d2SYehuda Sadeh 4063b7ec35b3SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 4064b7ec35b3SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 4065b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 406642c1b124SIlya Dryomov have_pool_full(osdc); 40679a1ea2dbSJosh Durgin 40683d14c5d2SYehuda Sadeh /* incremental maps */ 40693d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 40703d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 40713d14c5d2SYehuda Sadeh while (nr_maps > 0) { 40723d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 40733d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 40743d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 40753d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 407642c1b124SIlya Dryomov if (osdc->osdmap->epoch && 407742c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 40783d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 40793d14c5d2SYehuda Sadeh epoch, maplen); 40805aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 40815aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 408242c1b124SIlya Dryomov if (err) 40833d14c5d2SYehuda Sadeh goto bad; 408442c1b124SIlya Dryomov handled_incremental = true; 40853d14c5d2SYehuda Sadeh } else { 40863d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 40873d14c5d2SYehuda Sadeh epoch, maplen); 40883d14c5d2SYehuda Sadeh } 408942c1b124SIlya Dryomov p += maplen; 40903d14c5d2SYehuda Sadeh nr_maps--; 40913d14c5d2SYehuda Sadeh } 409242c1b124SIlya Dryomov if (handled_incremental) 40933d14c5d2SYehuda Sadeh goto done; 40943d14c5d2SYehuda Sadeh 40953d14c5d2SYehuda Sadeh /* full maps */ 40963d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 40973d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 40983d14c5d2SYehuda Sadeh while (nr_maps) { 40993d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 41003d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 41013d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 41023d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 41033d14c5d2SYehuda Sadeh if (nr_maps > 1) { 41043d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 41053d14c5d2SYehuda Sadeh epoch, maplen); 4106e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 41073d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 41083d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 41093d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 41103d14c5d2SYehuda Sadeh } else { 41113d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 41125aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 41135aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 411442c1b124SIlya Dryomov if (err) 41153d14c5d2SYehuda Sadeh goto bad; 41163d14c5d2SYehuda Sadeh } 41173d14c5d2SYehuda Sadeh p += maplen; 41183d14c5d2SYehuda Sadeh nr_maps--; 41193d14c5d2SYehuda Sadeh } 41203d14c5d2SYehuda Sadeh 41213d14c5d2SYehuda Sadeh done: 4122cd634fb6SSage Weil /* 4123cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 4124cd634fb6SSage Weil * we find out when we are no longer full and stop returning 4125cd634fb6SSage Weil * ENOSPC. 4126cd634fb6SSage Weil */ 4127b7ec35b3SIlya Dryomov pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 4128b7ec35b3SIlya Dryomov pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 4129b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 413042c1b124SIlya Dryomov have_pool_full(osdc); 413158eb7932SJeff Layton if (was_pauserd || was_pausewr || pauserd || pausewr || 413258eb7932SJeff Layton osdc->osdmap->epoch < osdc->epoch_barrier) 413342c1b124SIlya Dryomov maybe_request_map(osdc); 4134cd634fb6SSage Weil 41355aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 413642c1b124SIlya Dryomov 4137fc36d0a4SJeff Layton ceph_osdc_abort_on_full(osdc); 413842c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 413942c1b124SIlya Dryomov osdc->osdmap->epoch); 41405aea3dcdSIlya Dryomov up_write(&osdc->lock); 41413d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 41423d14c5d2SYehuda Sadeh return; 41433d14c5d2SYehuda Sadeh 41443d14c5d2SYehuda Sadeh bad: 41453d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 41463d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 41475aea3dcdSIlya Dryomov up_write(&osdc->lock); 41485aea3dcdSIlya Dryomov } 41495aea3dcdSIlya Dryomov 41505aea3dcdSIlya Dryomov /* 41515aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 41525aea3dcdSIlya Dryomov */ 41535aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 41545aea3dcdSIlya Dryomov { 41555aea3dcdSIlya Dryomov struct rb_node *n; 41565aea3dcdSIlya Dryomov 4157a02a946dSIlya Dryomov clear_backoffs(osd); 4158a02a946dSIlya Dryomov 4159922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 41605aea3dcdSIlya Dryomov struct ceph_osd_request *req = 41615aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 41625aea3dcdSIlya Dryomov 4163922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 4164922dab61SIlya Dryomov 41655aea3dcdSIlya Dryomov if (!req->r_linger) { 41665aea3dcdSIlya Dryomov if (!req->r_t.paused) 41675aea3dcdSIlya Dryomov send_request(req); 4168922dab61SIlya Dryomov } else { 4169922dab61SIlya Dryomov cancel_linger_request(req); 41705aea3dcdSIlya Dryomov } 41715aea3dcdSIlya Dryomov } 4172922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 4173922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 4174922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 4175922dab61SIlya Dryomov 4176922dab61SIlya Dryomov send_linger(lreq); 4177922dab61SIlya Dryomov } 41785aea3dcdSIlya Dryomov } 41795aea3dcdSIlya Dryomov 41805aea3dcdSIlya Dryomov /* 41815aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 41825aea3dcdSIlya Dryomov */ 41835aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 41845aea3dcdSIlya Dryomov { 41855aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 41865aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 41875aea3dcdSIlya Dryomov 41885aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 41895aea3dcdSIlya Dryomov 41905aea3dcdSIlya Dryomov down_write(&osdc->lock); 41915aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 41925aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 41935aea3dcdSIlya Dryomov goto out_unlock; 41945aea3dcdSIlya Dryomov } 41955aea3dcdSIlya Dryomov 41965aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 41975aea3dcdSIlya Dryomov kick_osd_requests(osd); 41985aea3dcdSIlya Dryomov maybe_request_map(osdc); 41995aea3dcdSIlya Dryomov 42005aea3dcdSIlya Dryomov out_unlock: 42015aea3dcdSIlya Dryomov up_write(&osdc->lock); 42023d14c5d2SYehuda Sadeh } 42033d14c5d2SYehuda Sadeh 4204a02a946dSIlya Dryomov struct MOSDBackoff { 4205a02a946dSIlya Dryomov struct ceph_spg spgid; 4206a02a946dSIlya Dryomov u32 map_epoch; 4207a02a946dSIlya Dryomov u8 op; 4208a02a946dSIlya Dryomov u64 id; 4209a02a946dSIlya Dryomov struct ceph_hobject_id *begin; 4210a02a946dSIlya Dryomov struct ceph_hobject_id *end; 4211a02a946dSIlya Dryomov }; 4212a02a946dSIlya Dryomov 4213a02a946dSIlya Dryomov static int decode_MOSDBackoff(const struct ceph_msg *msg, struct MOSDBackoff *m) 4214a02a946dSIlya Dryomov { 4215a02a946dSIlya Dryomov void *p = msg->front.iov_base; 4216a02a946dSIlya Dryomov void *const end = p + msg->front.iov_len; 4217a02a946dSIlya Dryomov u8 struct_v; 4218a02a946dSIlya Dryomov u32 struct_len; 4219a02a946dSIlya Dryomov int ret; 4220a02a946dSIlya Dryomov 4221a02a946dSIlya Dryomov ret = ceph_start_decoding(&p, end, 1, "spg_t", &struct_v, &struct_len); 4222a02a946dSIlya Dryomov if (ret) 4223a02a946dSIlya Dryomov return ret; 4224a02a946dSIlya Dryomov 4225a02a946dSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->spgid.pgid); 4226a02a946dSIlya Dryomov if (ret) 4227a02a946dSIlya Dryomov return ret; 4228a02a946dSIlya Dryomov 4229a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->spgid.shard, e_inval); 4230a02a946dSIlya Dryomov ceph_decode_32_safe(&p, end, m->map_epoch, e_inval); 4231a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->op, e_inval); 4232a02a946dSIlya Dryomov ceph_decode_64_safe(&p, end, m->id, e_inval); 4233a02a946dSIlya Dryomov 4234a02a946dSIlya Dryomov m->begin = kzalloc(sizeof(*m->begin), GFP_NOIO); 4235a02a946dSIlya Dryomov if (!m->begin) 4236a02a946dSIlya Dryomov return -ENOMEM; 4237a02a946dSIlya Dryomov 4238a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->begin); 4239a02a946dSIlya Dryomov if (ret) { 4240a02a946dSIlya Dryomov free_hoid(m->begin); 4241a02a946dSIlya Dryomov return ret; 4242a02a946dSIlya Dryomov } 4243a02a946dSIlya Dryomov 4244a02a946dSIlya Dryomov m->end = kzalloc(sizeof(*m->end), GFP_NOIO); 4245a02a946dSIlya Dryomov if (!m->end) { 4246a02a946dSIlya Dryomov free_hoid(m->begin); 4247a02a946dSIlya Dryomov return -ENOMEM; 4248a02a946dSIlya Dryomov } 4249a02a946dSIlya Dryomov 4250a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->end); 4251a02a946dSIlya Dryomov if (ret) { 4252a02a946dSIlya Dryomov free_hoid(m->begin); 4253a02a946dSIlya Dryomov free_hoid(m->end); 4254a02a946dSIlya Dryomov return ret; 4255a02a946dSIlya Dryomov } 4256a02a946dSIlya Dryomov 4257a02a946dSIlya Dryomov return 0; 4258a02a946dSIlya Dryomov 4259a02a946dSIlya Dryomov e_inval: 4260a02a946dSIlya Dryomov return -EINVAL; 4261a02a946dSIlya Dryomov } 4262a02a946dSIlya Dryomov 4263a02a946dSIlya Dryomov static struct ceph_msg *create_backoff_message( 4264a02a946dSIlya Dryomov const struct ceph_osd_backoff *backoff, 4265a02a946dSIlya Dryomov u32 map_epoch) 4266a02a946dSIlya Dryomov { 4267a02a946dSIlya Dryomov struct ceph_msg *msg; 4268a02a946dSIlya Dryomov void *p, *end; 4269a02a946dSIlya Dryomov int msg_size; 4270a02a946dSIlya Dryomov 4271a02a946dSIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 4272a02a946dSIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 4273a02a946dSIlya Dryomov msg_size += 4 + 1 + 8; /* map_epoch, op, id */ 4274a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4275a02a946dSIlya Dryomov hoid_encoding_size(backoff->begin); 4276a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4277a02a946dSIlya Dryomov hoid_encoding_size(backoff->end); 4278a02a946dSIlya Dryomov 4279a02a946dSIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_BACKOFF, msg_size, GFP_NOIO, true); 4280a02a946dSIlya Dryomov if (!msg) 4281a02a946dSIlya Dryomov return NULL; 4282a02a946dSIlya Dryomov 4283a02a946dSIlya Dryomov p = msg->front.iov_base; 4284a02a946dSIlya Dryomov end = p + msg->front_alloc_len; 4285a02a946dSIlya Dryomov 4286a02a946dSIlya Dryomov encode_spgid(&p, &backoff->spgid); 4287a02a946dSIlya Dryomov ceph_encode_32(&p, map_epoch); 4288a02a946dSIlya Dryomov ceph_encode_8(&p, CEPH_OSD_BACKOFF_OP_ACK_BLOCK); 4289a02a946dSIlya Dryomov ceph_encode_64(&p, backoff->id); 4290a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->begin); 4291a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->end); 4292a02a946dSIlya Dryomov BUG_ON(p != end); 4293a02a946dSIlya Dryomov 4294a02a946dSIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 4295a02a946dSIlya Dryomov msg->hdr.version = cpu_to_le16(1); /* MOSDBackoff v1 */ 4296a02a946dSIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 4297a02a946dSIlya Dryomov 4298a02a946dSIlya Dryomov return msg; 4299a02a946dSIlya Dryomov } 4300a02a946dSIlya Dryomov 4301a02a946dSIlya Dryomov static void handle_backoff_block(struct ceph_osd *osd, struct MOSDBackoff *m) 4302a02a946dSIlya Dryomov { 4303a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4304a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4305a02a946dSIlya Dryomov struct ceph_msg *msg; 4306a02a946dSIlya Dryomov 4307a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4308a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4309a02a946dSIlya Dryomov 4310a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &m->spgid); 4311a02a946dSIlya Dryomov if (!spg) { 4312a02a946dSIlya Dryomov spg = alloc_spg_mapping(); 4313a02a946dSIlya Dryomov if (!spg) { 4314a02a946dSIlya Dryomov pr_err("%s failed to allocate spg\n", __func__); 4315a02a946dSIlya Dryomov return; 4316a02a946dSIlya Dryomov } 4317a02a946dSIlya Dryomov spg->spgid = m->spgid; /* struct */ 4318a02a946dSIlya Dryomov insert_spg_mapping(&osd->o_backoff_mappings, spg); 4319a02a946dSIlya Dryomov } 4320a02a946dSIlya Dryomov 4321a02a946dSIlya Dryomov backoff = alloc_backoff(); 4322a02a946dSIlya Dryomov if (!backoff) { 4323a02a946dSIlya Dryomov pr_err("%s failed to allocate backoff\n", __func__); 4324a02a946dSIlya Dryomov return; 4325a02a946dSIlya Dryomov } 4326a02a946dSIlya Dryomov backoff->spgid = m->spgid; /* struct */ 4327a02a946dSIlya Dryomov backoff->id = m->id; 4328a02a946dSIlya Dryomov backoff->begin = m->begin; 4329a02a946dSIlya Dryomov m->begin = NULL; /* backoff now owns this */ 4330a02a946dSIlya Dryomov backoff->end = m->end; 4331a02a946dSIlya Dryomov m->end = NULL; /* ditto */ 4332a02a946dSIlya Dryomov 4333a02a946dSIlya Dryomov insert_backoff(&spg->backoffs, backoff); 4334a02a946dSIlya Dryomov insert_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4335a02a946dSIlya Dryomov 4336a02a946dSIlya Dryomov /* 4337a02a946dSIlya Dryomov * Ack with original backoff's epoch so that the OSD can 4338a02a946dSIlya Dryomov * discard this if there was a PG split. 4339a02a946dSIlya Dryomov */ 4340a02a946dSIlya Dryomov msg = create_backoff_message(backoff, m->map_epoch); 4341a02a946dSIlya Dryomov if (!msg) { 4342a02a946dSIlya Dryomov pr_err("%s failed to allocate msg\n", __func__); 4343a02a946dSIlya Dryomov return; 4344a02a946dSIlya Dryomov } 4345a02a946dSIlya Dryomov ceph_con_send(&osd->o_con, msg); 4346a02a946dSIlya Dryomov } 4347a02a946dSIlya Dryomov 4348a02a946dSIlya Dryomov static bool target_contained_by(const struct ceph_osd_request_target *t, 4349a02a946dSIlya Dryomov const struct ceph_hobject_id *begin, 4350a02a946dSIlya Dryomov const struct ceph_hobject_id *end) 4351a02a946dSIlya Dryomov { 4352a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 4353a02a946dSIlya Dryomov int cmp; 4354a02a946dSIlya Dryomov 4355a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, t); 4356a02a946dSIlya Dryomov cmp = hoid_compare(&hoid, begin); 4357a02a946dSIlya Dryomov return !cmp || (cmp > 0 && hoid_compare(&hoid, end) < 0); 4358a02a946dSIlya Dryomov } 4359a02a946dSIlya Dryomov 4360a02a946dSIlya Dryomov static void handle_backoff_unblock(struct ceph_osd *osd, 4361a02a946dSIlya Dryomov const struct MOSDBackoff *m) 4362a02a946dSIlya Dryomov { 4363a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4364a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4365a02a946dSIlya Dryomov struct rb_node *n; 4366a02a946dSIlya Dryomov 4367a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4368a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4369a02a946dSIlya Dryomov 4370a02a946dSIlya Dryomov backoff = lookup_backoff_by_id(&osd->o_backoffs_by_id, m->id); 4371a02a946dSIlya Dryomov if (!backoff) { 4372a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu backoff dne\n", 4373a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4374a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4375a02a946dSIlya Dryomov return; 4376a02a946dSIlya Dryomov } 4377a02a946dSIlya Dryomov 4378a02a946dSIlya Dryomov if (hoid_compare(backoff->begin, m->begin) && 4379a02a946dSIlya Dryomov hoid_compare(backoff->end, m->end)) { 4380a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu bad range?\n", 4381a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4382a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4383a02a946dSIlya Dryomov /* unblock it anyway... */ 4384a02a946dSIlya Dryomov } 4385a02a946dSIlya Dryomov 4386a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &backoff->spgid); 4387a02a946dSIlya Dryomov BUG_ON(!spg); 4388a02a946dSIlya Dryomov 4389a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 4390a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4391a02a946dSIlya Dryomov free_backoff(backoff); 4392a02a946dSIlya Dryomov 4393a02a946dSIlya Dryomov if (RB_EMPTY_ROOT(&spg->backoffs)) { 4394a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 4395a02a946dSIlya Dryomov free_spg_mapping(spg); 4396a02a946dSIlya Dryomov } 4397a02a946dSIlya Dryomov 4398a02a946dSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 4399a02a946dSIlya Dryomov struct ceph_osd_request *req = 4400a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 4401a02a946dSIlya Dryomov 4402a02a946dSIlya Dryomov if (!ceph_spg_compare(&req->r_t.spgid, &m->spgid)) { 4403a02a946dSIlya Dryomov /* 4404a02a946dSIlya Dryomov * Match against @m, not @backoff -- the PG may 4405a02a946dSIlya Dryomov * have split on the OSD. 4406a02a946dSIlya Dryomov */ 4407a02a946dSIlya Dryomov if (target_contained_by(&req->r_t, m->begin, m->end)) { 4408a02a946dSIlya Dryomov /* 4409a02a946dSIlya Dryomov * If no other installed backoff applies, 4410a02a946dSIlya Dryomov * resend. 4411a02a946dSIlya Dryomov */ 4412a02a946dSIlya Dryomov send_request(req); 4413a02a946dSIlya Dryomov } 4414a02a946dSIlya Dryomov } 4415a02a946dSIlya Dryomov } 4416a02a946dSIlya Dryomov } 4417a02a946dSIlya Dryomov 4418a02a946dSIlya Dryomov static void handle_backoff(struct ceph_osd *osd, struct ceph_msg *msg) 4419a02a946dSIlya Dryomov { 4420a02a946dSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 4421a02a946dSIlya Dryomov struct MOSDBackoff m; 4422a02a946dSIlya Dryomov int ret; 4423a02a946dSIlya Dryomov 4424a02a946dSIlya Dryomov down_read(&osdc->lock); 4425a02a946dSIlya Dryomov if (!osd_registered(osd)) { 4426a02a946dSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 4427a02a946dSIlya Dryomov up_read(&osdc->lock); 4428a02a946dSIlya Dryomov return; 4429a02a946dSIlya Dryomov } 4430a02a946dSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 4431a02a946dSIlya Dryomov 4432a02a946dSIlya Dryomov mutex_lock(&osd->lock); 4433a02a946dSIlya Dryomov ret = decode_MOSDBackoff(msg, &m); 4434a02a946dSIlya Dryomov if (ret) { 4435a02a946dSIlya Dryomov pr_err("failed to decode MOSDBackoff: %d\n", ret); 4436a02a946dSIlya Dryomov ceph_msg_dump(msg); 4437a02a946dSIlya Dryomov goto out_unlock; 4438a02a946dSIlya Dryomov } 4439a02a946dSIlya Dryomov 4440a02a946dSIlya Dryomov switch (m.op) { 4441a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_BLOCK: 4442a02a946dSIlya Dryomov handle_backoff_block(osd, &m); 4443a02a946dSIlya Dryomov break; 4444a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_UNBLOCK: 4445a02a946dSIlya Dryomov handle_backoff_unblock(osd, &m); 4446a02a946dSIlya Dryomov break; 4447a02a946dSIlya Dryomov default: 4448a02a946dSIlya Dryomov pr_err("%s osd%d unknown op %d\n", __func__, osd->o_osd, m.op); 4449a02a946dSIlya Dryomov } 4450a02a946dSIlya Dryomov 4451a02a946dSIlya Dryomov free_hoid(m.begin); 4452a02a946dSIlya Dryomov free_hoid(m.end); 4453a02a946dSIlya Dryomov 4454a02a946dSIlya Dryomov out_unlock: 4455a02a946dSIlya Dryomov mutex_unlock(&osd->lock); 4456a02a946dSIlya Dryomov up_read(&osdc->lock); 4457a02a946dSIlya Dryomov } 4458a02a946dSIlya Dryomov 44593d14c5d2SYehuda Sadeh /* 4460a40c4f10SYehuda Sadeh * Process osd watch notifications 4461a40c4f10SYehuda Sadeh */ 44623c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 44633c663bbdSAlex Elder struct ceph_msg *msg) 4464a40c4f10SYehuda Sadeh { 4465922dab61SIlya Dryomov void *p = msg->front.iov_base; 4466922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 4467922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4468922dab61SIlya Dryomov struct linger_work *lwork; 4469922dab61SIlya Dryomov u8 proto_ver, opcode; 4470922dab61SIlya Dryomov u64 cookie, notify_id; 4471922dab61SIlya Dryomov u64 notifier_id = 0; 447219079203SIlya Dryomov s32 return_code = 0; 4473922dab61SIlya Dryomov void *payload = NULL; 4474922dab61SIlya Dryomov u32 payload_len = 0; 4475a40c4f10SYehuda Sadeh 4476a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 4477a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 4478a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 4479922dab61SIlya Dryomov p += 8; /* skip ver */ 4480a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 4481a40c4f10SYehuda Sadeh 4482922dab61SIlya Dryomov if (proto_ver >= 1) { 4483922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 4484922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 4485922dab61SIlya Dryomov payload = p; 4486922dab61SIlya Dryomov p += payload_len; 4487a40c4f10SYehuda Sadeh } 4488a40c4f10SYehuda Sadeh 4489922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 449019079203SIlya Dryomov ceph_decode_32_safe(&p, end, return_code, bad); 4491922dab61SIlya Dryomov 4492922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 4493922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 4494922dab61SIlya Dryomov 4495922dab61SIlya Dryomov down_read(&osdc->lock); 4496922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 4497922dab61SIlya Dryomov if (!lreq) { 4498922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 4499922dab61SIlya Dryomov cookie); 4500922dab61SIlya Dryomov goto out_unlock_osdc; 4501922dab61SIlya Dryomov } 4502922dab61SIlya Dryomov 4503922dab61SIlya Dryomov mutex_lock(&lreq->lock); 450419079203SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, 450519079203SIlya Dryomov opcode, cookie, lreq, lreq->is_watch); 4506922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 4507922dab61SIlya Dryomov if (!lreq->last_error) { 4508922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 4509922dab61SIlya Dryomov queue_watch_error(lreq); 4510922dab61SIlya Dryomov } 451119079203SIlya Dryomov } else if (!lreq->is_watch) { 451219079203SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ 451319079203SIlya Dryomov if (lreq->notify_id && lreq->notify_id != notify_id) { 451419079203SIlya Dryomov dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, 451519079203SIlya Dryomov lreq->notify_id, notify_id); 451619079203SIlya Dryomov } else if (!completion_done(&lreq->notify_finish_wait)) { 451719079203SIlya Dryomov struct ceph_msg_data *data = 45180d9c1ab3SIlya Dryomov msg->num_data_items ? &msg->data[0] : NULL; 451919079203SIlya Dryomov 452019079203SIlya Dryomov if (data) { 452119079203SIlya Dryomov if (lreq->preply_pages) { 452219079203SIlya Dryomov WARN_ON(data->type != 452319079203SIlya Dryomov CEPH_MSG_DATA_PAGES); 452419079203SIlya Dryomov *lreq->preply_pages = data->pages; 452519079203SIlya Dryomov *lreq->preply_len = data->length; 4526e8862740SIlya Dryomov data->own_pages = false; 452719079203SIlya Dryomov } 452819079203SIlya Dryomov } 452919079203SIlya Dryomov lreq->notify_finish_error = return_code; 453019079203SIlya Dryomov complete_all(&lreq->notify_finish_wait); 453119079203SIlya Dryomov } 4532922dab61SIlya Dryomov } else { 4533922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 4534922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 4535922dab61SIlya Dryomov if (!lwork) { 4536922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 4537922dab61SIlya Dryomov goto out_unlock_lreq; 4538922dab61SIlya Dryomov } 4539922dab61SIlya Dryomov 4540922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 4541922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 4542922dab61SIlya Dryomov lwork->notify.payload = payload; 4543922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 4544922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 4545922dab61SIlya Dryomov lwork_queue(lwork); 4546922dab61SIlya Dryomov } 4547922dab61SIlya Dryomov 4548922dab61SIlya Dryomov out_unlock_lreq: 4549922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 4550922dab61SIlya Dryomov out_unlock_osdc: 4551922dab61SIlya Dryomov up_read(&osdc->lock); 4552a40c4f10SYehuda Sadeh return; 4553a40c4f10SYehuda Sadeh 4554a40c4f10SYehuda Sadeh bad: 4555a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 4556a40c4f10SYehuda Sadeh } 4557a40c4f10SYehuda Sadeh 4558a40c4f10SYehuda Sadeh /* 45593d14c5d2SYehuda Sadeh * Register request, send initial attempt. 45603d14c5d2SYehuda Sadeh */ 45613d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 45623d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 45633d14c5d2SYehuda Sadeh bool nofail) 45643d14c5d2SYehuda Sadeh { 45655aea3dcdSIlya Dryomov down_read(&osdc->lock); 45665aea3dcdSIlya Dryomov submit_request(req, false); 45675aea3dcdSIlya Dryomov up_read(&osdc->lock); 45683d14c5d2SYehuda Sadeh 45695aea3dcdSIlya Dryomov return 0; 45703d14c5d2SYehuda Sadeh } 45713d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 45723d14c5d2SYehuda Sadeh 45733d14c5d2SYehuda Sadeh /* 4574c297eb42SIlya Dryomov * Unregister a registered request. The request is not completed: 4575c297eb42SIlya Dryomov * ->r_result isn't set and __complete_request() isn't called. 4576c9f9b93dSIlya Dryomov */ 4577c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 4578c9f9b93dSIlya Dryomov { 4579c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 4580c9f9b93dSIlya Dryomov 45815aea3dcdSIlya Dryomov down_write(&osdc->lock); 45825aea3dcdSIlya Dryomov if (req->r_osd) 45835aea3dcdSIlya Dryomov cancel_request(req); 45845aea3dcdSIlya Dryomov up_write(&osdc->lock); 4585c9f9b93dSIlya Dryomov } 4586c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 4587c9f9b93dSIlya Dryomov 4588c9f9b93dSIlya Dryomov /* 458942b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 459042b06965SIlya Dryomov */ 459142b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 459242b06965SIlya Dryomov unsigned long timeout) 459342b06965SIlya Dryomov { 459442b06965SIlya Dryomov long left; 459542b06965SIlya Dryomov 459642b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 45970e76abf2SYan, Zheng left = wait_for_completion_killable_timeout(&req->r_completion, 459842b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 459942b06965SIlya Dryomov if (left <= 0) { 460042b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 460142b06965SIlya Dryomov ceph_osdc_cancel_request(req); 460242b06965SIlya Dryomov } else { 460342b06965SIlya Dryomov left = req->r_result; /* completed */ 460442b06965SIlya Dryomov } 460542b06965SIlya Dryomov 460642b06965SIlya Dryomov return left; 460742b06965SIlya Dryomov } 460842b06965SIlya Dryomov 460942b06965SIlya Dryomov /* 46103d14c5d2SYehuda Sadeh * wait for a request to complete 46113d14c5d2SYehuda Sadeh */ 46123d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 46133d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 46143d14c5d2SYehuda Sadeh { 461542b06965SIlya Dryomov return wait_request_timeout(req, 0); 46163d14c5d2SYehuda Sadeh } 46173d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 46183d14c5d2SYehuda Sadeh 46193d14c5d2SYehuda Sadeh /* 46203d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 46213d14c5d2SYehuda Sadeh */ 46223d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 46233d14c5d2SYehuda Sadeh { 46245aea3dcdSIlya Dryomov struct rb_node *n, *p; 46255aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 46263d14c5d2SYehuda Sadeh 46275aea3dcdSIlya Dryomov again: 46285aea3dcdSIlya Dryomov down_read(&osdc->lock); 46295aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 46305aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 46315aea3dcdSIlya Dryomov 46325aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 46335aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 46345aea3dcdSIlya Dryomov struct ceph_osd_request *req = 46355aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 46365aea3dcdSIlya Dryomov 46373d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 46383d14c5d2SYehuda Sadeh break; 46393d14c5d2SYehuda Sadeh 46405aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 46413d14c5d2SYehuda Sadeh continue; 46423d14c5d2SYehuda Sadeh 46433d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 46445aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 46455aea3dcdSIlya Dryomov up_read(&osdc->lock); 46465aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 46475aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 4648b18b9550SIlya Dryomov wait_for_completion(&req->r_completion); 46493d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 46505aea3dcdSIlya Dryomov goto again; 46513d14c5d2SYehuda Sadeh } 46525aea3dcdSIlya Dryomov 46535aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 46545aea3dcdSIlya Dryomov } 46555aea3dcdSIlya Dryomov 46565aea3dcdSIlya Dryomov up_read(&osdc->lock); 46575aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 46583d14c5d2SYehuda Sadeh } 46593d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 46603d14c5d2SYehuda Sadeh 4661922dab61SIlya Dryomov static struct ceph_osd_request * 4662922dab61SIlya Dryomov alloc_linger_request(struct ceph_osd_linger_request *lreq) 4663922dab61SIlya Dryomov { 4664922dab61SIlya Dryomov struct ceph_osd_request *req; 4665922dab61SIlya Dryomov 4666922dab61SIlya Dryomov req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); 4667922dab61SIlya Dryomov if (!req) 4668922dab61SIlya Dryomov return NULL; 4669922dab61SIlya Dryomov 4670922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4671922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 4672922dab61SIlya Dryomov return req; 4673922dab61SIlya Dryomov } 4674922dab61SIlya Dryomov 467539e58c34SIlya Dryomov static struct ceph_osd_request * 467639e58c34SIlya Dryomov alloc_watch_request(struct ceph_osd_linger_request *lreq, u8 watch_opcode) 467739e58c34SIlya Dryomov { 467839e58c34SIlya Dryomov struct ceph_osd_request *req; 467939e58c34SIlya Dryomov 468039e58c34SIlya Dryomov req = alloc_linger_request(lreq); 468139e58c34SIlya Dryomov if (!req) 468239e58c34SIlya Dryomov return NULL; 468339e58c34SIlya Dryomov 468439e58c34SIlya Dryomov /* 468539e58c34SIlya Dryomov * Pass 0 for cookie because we don't know it yet, it will be 468639e58c34SIlya Dryomov * filled in by linger_submit(). 468739e58c34SIlya Dryomov */ 468839e58c34SIlya Dryomov osd_req_op_watch_init(req, 0, 0, watch_opcode); 468926f887e0SIlya Dryomov 469026f887e0SIlya Dryomov if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { 469126f887e0SIlya Dryomov ceph_osdc_put_request(req); 469226f887e0SIlya Dryomov return NULL; 469326f887e0SIlya Dryomov } 469426f887e0SIlya Dryomov 469539e58c34SIlya Dryomov return req; 469639e58c34SIlya Dryomov } 469739e58c34SIlya Dryomov 4698922dab61SIlya Dryomov /* 4699922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 4700922dab61SIlya Dryomov */ 4701922dab61SIlya Dryomov struct ceph_osd_linger_request * 4702922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 4703922dab61SIlya Dryomov struct ceph_object_id *oid, 4704922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4705922dab61SIlya Dryomov rados_watchcb2_t wcb, 4706922dab61SIlya Dryomov rados_watcherrcb_t errcb, 4707922dab61SIlya Dryomov void *data) 4708922dab61SIlya Dryomov { 4709922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4710922dab61SIlya Dryomov int ret; 4711922dab61SIlya Dryomov 4712922dab61SIlya Dryomov lreq = linger_alloc(osdc); 4713922dab61SIlya Dryomov if (!lreq) 4714922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 4715922dab61SIlya Dryomov 471619079203SIlya Dryomov lreq->is_watch = true; 4717922dab61SIlya Dryomov lreq->wcb = wcb; 4718922dab61SIlya Dryomov lreq->errcb = errcb; 4719922dab61SIlya Dryomov lreq->data = data; 4720b07d3c4bSIlya Dryomov lreq->watch_valid_thru = jiffies; 4721922dab61SIlya Dryomov 4722922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 4723922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 472454ea0046SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE; 4725fac02ddfSArnd Bergmann ktime_get_real_ts64(&lreq->mtime); 4726922dab61SIlya Dryomov 472739e58c34SIlya Dryomov lreq->reg_req = alloc_watch_request(lreq, CEPH_OSD_WATCH_OP_WATCH); 4728922dab61SIlya Dryomov if (!lreq->reg_req) { 4729922dab61SIlya Dryomov ret = -ENOMEM; 4730922dab61SIlya Dryomov goto err_put_lreq; 4731922dab61SIlya Dryomov } 4732922dab61SIlya Dryomov 473339e58c34SIlya Dryomov lreq->ping_req = alloc_watch_request(lreq, CEPH_OSD_WATCH_OP_PING); 4734922dab61SIlya Dryomov if (!lreq->ping_req) { 4735922dab61SIlya Dryomov ret = -ENOMEM; 4736922dab61SIlya Dryomov goto err_put_lreq; 4737922dab61SIlya Dryomov } 4738922dab61SIlya Dryomov 473981c65213SIlya Dryomov linger_submit(lreq); 4740922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 4741922dab61SIlya Dryomov if (ret) { 4742922dab61SIlya Dryomov linger_cancel(lreq); 4743922dab61SIlya Dryomov goto err_put_lreq; 4744922dab61SIlya Dryomov } 4745922dab61SIlya Dryomov 4746922dab61SIlya Dryomov return lreq; 4747922dab61SIlya Dryomov 4748922dab61SIlya Dryomov err_put_lreq: 4749922dab61SIlya Dryomov linger_put(lreq); 4750922dab61SIlya Dryomov return ERR_PTR(ret); 4751922dab61SIlya Dryomov } 4752922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 4753922dab61SIlya Dryomov 4754922dab61SIlya Dryomov /* 4755922dab61SIlya Dryomov * Releases a ref. 4756922dab61SIlya Dryomov * 4757922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 4758922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 4759922dab61SIlya Dryomov * with mount_timeout"). 4760922dab61SIlya Dryomov */ 4761922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 4762922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 4763922dab61SIlya Dryomov { 4764922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 4765922dab61SIlya Dryomov struct ceph_osd_request *req; 4766922dab61SIlya Dryomov int ret; 4767922dab61SIlya Dryomov 4768922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4769922dab61SIlya Dryomov if (!req) 4770922dab61SIlya Dryomov return -ENOMEM; 4771922dab61SIlya Dryomov 4772922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4773922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 477454ea0046SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE; 4775fac02ddfSArnd Bergmann ktime_get_real_ts64(&req->r_mtime); 4776922dab61SIlya Dryomov osd_req_op_watch_init(req, 0, lreq->linger_id, 4777922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_UNWATCH); 4778922dab61SIlya Dryomov 4779922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4780922dab61SIlya Dryomov if (ret) 4781922dab61SIlya Dryomov goto out_put_req; 4782922dab61SIlya Dryomov 4783922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 4784922dab61SIlya Dryomov linger_cancel(lreq); 4785922dab61SIlya Dryomov linger_put(lreq); 4786922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 4787922dab61SIlya Dryomov 4788922dab61SIlya Dryomov out_put_req: 4789922dab61SIlya Dryomov ceph_osdc_put_request(req); 4790922dab61SIlya Dryomov return ret; 4791922dab61SIlya Dryomov } 4792922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 4793922dab61SIlya Dryomov 4794922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 4795922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 47966d54228fSIlya Dryomov u32 payload_len) 4797922dab61SIlya Dryomov { 4798922dab61SIlya Dryomov struct ceph_osd_req_op *op; 4799922dab61SIlya Dryomov struct ceph_pagelist *pl; 4800922dab61SIlya Dryomov int ret; 4801922dab61SIlya Dryomov 4802922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 4803922dab61SIlya Dryomov 480433165d47SIlya Dryomov pl = ceph_pagelist_alloc(GFP_NOIO); 4805922dab61SIlya Dryomov if (!pl) 4806922dab61SIlya Dryomov return -ENOMEM; 4807922dab61SIlya Dryomov 4808922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 4809922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 4810922dab61SIlya Dryomov if (payload) { 4811922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 4812922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 4813922dab61SIlya Dryomov } else { 4814922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 4815922dab61SIlya Dryomov } 4816922dab61SIlya Dryomov if (ret) { 4817922dab61SIlya Dryomov ceph_pagelist_release(pl); 4818922dab61SIlya Dryomov return -ENOMEM; 4819922dab61SIlya Dryomov } 4820922dab61SIlya Dryomov 4821922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 4822922dab61SIlya Dryomov op->indata_len = pl->length; 4823922dab61SIlya Dryomov return 0; 4824922dab61SIlya Dryomov } 4825922dab61SIlya Dryomov 4826922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 4827922dab61SIlya Dryomov struct ceph_object_id *oid, 4828922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4829922dab61SIlya Dryomov u64 notify_id, 4830922dab61SIlya Dryomov u64 cookie, 4831922dab61SIlya Dryomov void *payload, 48326d54228fSIlya Dryomov u32 payload_len) 4833922dab61SIlya Dryomov { 4834922dab61SIlya Dryomov struct ceph_osd_request *req; 4835922dab61SIlya Dryomov int ret; 4836922dab61SIlya Dryomov 4837922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4838922dab61SIlya Dryomov if (!req) 4839922dab61SIlya Dryomov return -ENOMEM; 4840922dab61SIlya Dryomov 4841922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 4842922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 4843922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 4844922dab61SIlya Dryomov 484526f887e0SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 484626f887e0SIlya Dryomov payload_len); 4847922dab61SIlya Dryomov if (ret) 4848922dab61SIlya Dryomov goto out_put_req; 4849922dab61SIlya Dryomov 485026f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4851922dab61SIlya Dryomov if (ret) 4852922dab61SIlya Dryomov goto out_put_req; 4853922dab61SIlya Dryomov 4854922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 4855922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 4856922dab61SIlya Dryomov 4857922dab61SIlya Dryomov out_put_req: 4858922dab61SIlya Dryomov ceph_osdc_put_request(req); 4859922dab61SIlya Dryomov return ret; 4860922dab61SIlya Dryomov } 4861922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 4862922dab61SIlya Dryomov 486319079203SIlya Dryomov static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, 486419079203SIlya Dryomov u64 cookie, u32 prot_ver, u32 timeout, 48656d54228fSIlya Dryomov void *payload, u32 payload_len) 486619079203SIlya Dryomov { 486719079203SIlya Dryomov struct ceph_osd_req_op *op; 486819079203SIlya Dryomov struct ceph_pagelist *pl; 486919079203SIlya Dryomov int ret; 487019079203SIlya Dryomov 487119079203SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); 487219079203SIlya Dryomov op->notify.cookie = cookie; 487319079203SIlya Dryomov 487433165d47SIlya Dryomov pl = ceph_pagelist_alloc(GFP_NOIO); 487519079203SIlya Dryomov if (!pl) 487619079203SIlya Dryomov return -ENOMEM; 487719079203SIlya Dryomov 487819079203SIlya Dryomov ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ 487919079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, timeout); 488019079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 488119079203SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 488219079203SIlya Dryomov if (ret) { 488319079203SIlya Dryomov ceph_pagelist_release(pl); 488419079203SIlya Dryomov return -ENOMEM; 488519079203SIlya Dryomov } 488619079203SIlya Dryomov 488719079203SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify.request_data, pl); 488819079203SIlya Dryomov op->indata_len = pl->length; 488919079203SIlya Dryomov return 0; 489019079203SIlya Dryomov } 489119079203SIlya Dryomov 489219079203SIlya Dryomov /* 489319079203SIlya Dryomov * @timeout: in seconds 489419079203SIlya Dryomov * 489519079203SIlya Dryomov * @preply_{pages,len} are initialized both on success and error. 489619079203SIlya Dryomov * The caller is responsible for: 489719079203SIlya Dryomov * 489819079203SIlya Dryomov * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) 489919079203SIlya Dryomov */ 490019079203SIlya Dryomov int ceph_osdc_notify(struct ceph_osd_client *osdc, 490119079203SIlya Dryomov struct ceph_object_id *oid, 490219079203SIlya Dryomov struct ceph_object_locator *oloc, 490319079203SIlya Dryomov void *payload, 49046d54228fSIlya Dryomov u32 payload_len, 490519079203SIlya Dryomov u32 timeout, 490619079203SIlya Dryomov struct page ***preply_pages, 490719079203SIlya Dryomov size_t *preply_len) 490819079203SIlya Dryomov { 490919079203SIlya Dryomov struct ceph_osd_linger_request *lreq; 491019079203SIlya Dryomov struct page **pages; 491119079203SIlya Dryomov int ret; 491219079203SIlya Dryomov 491319079203SIlya Dryomov WARN_ON(!timeout); 491419079203SIlya Dryomov if (preply_pages) { 491519079203SIlya Dryomov *preply_pages = NULL; 491619079203SIlya Dryomov *preply_len = 0; 491719079203SIlya Dryomov } 491819079203SIlya Dryomov 491919079203SIlya Dryomov lreq = linger_alloc(osdc); 492019079203SIlya Dryomov if (!lreq) 492119079203SIlya Dryomov return -ENOMEM; 492219079203SIlya Dryomov 492319079203SIlya Dryomov lreq->preply_pages = preply_pages; 492419079203SIlya Dryomov lreq->preply_len = preply_len; 492519079203SIlya Dryomov 492619079203SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 492719079203SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 492819079203SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_READ; 492919079203SIlya Dryomov 493019079203SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 493119079203SIlya Dryomov if (!lreq->reg_req) { 493219079203SIlya Dryomov ret = -ENOMEM; 493319079203SIlya Dryomov goto out_put_lreq; 493419079203SIlya Dryomov } 493519079203SIlya Dryomov 493681c65213SIlya Dryomov /* 493781c65213SIlya Dryomov * Pass 0 for cookie because we don't know it yet, it will be 493881c65213SIlya Dryomov * filled in by linger_submit(). 493981c65213SIlya Dryomov */ 494081c65213SIlya Dryomov ret = osd_req_op_notify_init(lreq->reg_req, 0, 0, 1, timeout, 494181c65213SIlya Dryomov payload, payload_len); 494281c65213SIlya Dryomov if (ret) 494381c65213SIlya Dryomov goto out_put_lreq; 494481c65213SIlya Dryomov 494519079203SIlya Dryomov /* for notify_id */ 494619079203SIlya Dryomov pages = ceph_alloc_page_vector(1, GFP_NOIO); 494719079203SIlya Dryomov if (IS_ERR(pages)) { 494819079203SIlya Dryomov ret = PTR_ERR(pages); 494919079203SIlya Dryomov goto out_put_lreq; 495019079203SIlya Dryomov } 495119079203SIlya Dryomov ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, 495219079203SIlya Dryomov response_data), 495319079203SIlya Dryomov pages, PAGE_SIZE, 0, false, true); 495419079203SIlya Dryomov 495526f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(lreq->reg_req, GFP_NOIO); 495626f887e0SIlya Dryomov if (ret) 495726f887e0SIlya Dryomov goto out_put_lreq; 495826f887e0SIlya Dryomov 495981c65213SIlya Dryomov linger_submit(lreq); 496019079203SIlya Dryomov ret = linger_reg_commit_wait(lreq); 496119079203SIlya Dryomov if (!ret) 496219079203SIlya Dryomov ret = linger_notify_finish_wait(lreq); 496319079203SIlya Dryomov else 496419079203SIlya Dryomov dout("lreq %p failed to initiate notify %d\n", lreq, ret); 496519079203SIlya Dryomov 496619079203SIlya Dryomov linger_cancel(lreq); 496719079203SIlya Dryomov out_put_lreq: 496819079203SIlya Dryomov linger_put(lreq); 496919079203SIlya Dryomov return ret; 497019079203SIlya Dryomov } 497119079203SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify); 497219079203SIlya Dryomov 49733d14c5d2SYehuda Sadeh /* 4974b07d3c4bSIlya Dryomov * Return the number of milliseconds since the watch was last 4975b07d3c4bSIlya Dryomov * confirmed, or an error. If there is an error, the watch is no 4976b07d3c4bSIlya Dryomov * longer valid, and should be destroyed with ceph_osdc_unwatch(). 4977b07d3c4bSIlya Dryomov */ 4978b07d3c4bSIlya Dryomov int ceph_osdc_watch_check(struct ceph_osd_client *osdc, 4979b07d3c4bSIlya Dryomov struct ceph_osd_linger_request *lreq) 4980b07d3c4bSIlya Dryomov { 4981b07d3c4bSIlya Dryomov unsigned long stamp, age; 4982b07d3c4bSIlya Dryomov int ret; 4983b07d3c4bSIlya Dryomov 4984b07d3c4bSIlya Dryomov down_read(&osdc->lock); 4985b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 4986b07d3c4bSIlya Dryomov stamp = lreq->watch_valid_thru; 4987b07d3c4bSIlya Dryomov if (!list_empty(&lreq->pending_lworks)) { 4988b07d3c4bSIlya Dryomov struct linger_work *lwork = 4989b07d3c4bSIlya Dryomov list_first_entry(&lreq->pending_lworks, 4990b07d3c4bSIlya Dryomov struct linger_work, 4991b07d3c4bSIlya Dryomov pending_item); 4992b07d3c4bSIlya Dryomov 4993b07d3c4bSIlya Dryomov if (time_before(lwork->queued_stamp, stamp)) 4994b07d3c4bSIlya Dryomov stamp = lwork->queued_stamp; 4995b07d3c4bSIlya Dryomov } 4996b07d3c4bSIlya Dryomov age = jiffies - stamp; 4997b07d3c4bSIlya Dryomov dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, 4998b07d3c4bSIlya Dryomov lreq, lreq->linger_id, age, lreq->last_error); 4999b07d3c4bSIlya Dryomov /* we are truncating to msecs, so return a safe upper bound */ 5000b07d3c4bSIlya Dryomov ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); 5001b07d3c4bSIlya Dryomov 5002b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 5003b07d3c4bSIlya Dryomov up_read(&osdc->lock); 5004b07d3c4bSIlya Dryomov return ret; 5005b07d3c4bSIlya Dryomov } 5006b07d3c4bSIlya Dryomov 5007a4ed38d7SDouglas Fuller static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) 5008a4ed38d7SDouglas Fuller { 5009a4ed38d7SDouglas Fuller u8 struct_v; 5010a4ed38d7SDouglas Fuller u32 struct_len; 5011a4ed38d7SDouglas Fuller int ret; 5012a4ed38d7SDouglas Fuller 5013a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 2, "watch_item_t", 5014a4ed38d7SDouglas Fuller &struct_v, &struct_len); 5015a4ed38d7SDouglas Fuller if (ret) 501651fc7ab4SJeff Layton goto bad; 5017a4ed38d7SDouglas Fuller 501851fc7ab4SJeff Layton ret = -EINVAL; 501951fc7ab4SJeff Layton ceph_decode_copy_safe(p, end, &item->name, sizeof(item->name), bad); 502051fc7ab4SJeff Layton ceph_decode_64_safe(p, end, item->cookie, bad); 502151fc7ab4SJeff Layton ceph_decode_skip_32(p, end, bad); /* skip timeout seconds */ 502251fc7ab4SJeff Layton 5023a4ed38d7SDouglas Fuller if (struct_v >= 2) { 502451fc7ab4SJeff Layton ret = ceph_decode_entity_addr(p, end, &item->addr); 502551fc7ab4SJeff Layton if (ret) 502651fc7ab4SJeff Layton goto bad; 502751fc7ab4SJeff Layton } else { 502851fc7ab4SJeff Layton ret = 0; 5029a4ed38d7SDouglas Fuller } 5030a4ed38d7SDouglas Fuller 5031a4ed38d7SDouglas Fuller dout("%s %s%llu cookie %llu addr %s\n", __func__, 5032a4ed38d7SDouglas Fuller ENTITY_NAME(item->name), item->cookie, 5033b726ec97SJeff Layton ceph_pr_addr(&item->addr)); 503451fc7ab4SJeff Layton bad: 503551fc7ab4SJeff Layton return ret; 5036a4ed38d7SDouglas Fuller } 5037a4ed38d7SDouglas Fuller 5038a4ed38d7SDouglas Fuller static int decode_watchers(void **p, void *end, 5039a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 5040a4ed38d7SDouglas Fuller u32 *num_watchers) 5041a4ed38d7SDouglas Fuller { 5042a4ed38d7SDouglas Fuller u8 struct_v; 5043a4ed38d7SDouglas Fuller u32 struct_len; 5044a4ed38d7SDouglas Fuller int i; 5045a4ed38d7SDouglas Fuller int ret; 5046a4ed38d7SDouglas Fuller 5047a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t", 5048a4ed38d7SDouglas Fuller &struct_v, &struct_len); 5049a4ed38d7SDouglas Fuller if (ret) 5050a4ed38d7SDouglas Fuller return ret; 5051a4ed38d7SDouglas Fuller 5052a4ed38d7SDouglas Fuller *num_watchers = ceph_decode_32(p); 5053a4ed38d7SDouglas Fuller *watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO); 5054a4ed38d7SDouglas Fuller if (!*watchers) 5055a4ed38d7SDouglas Fuller return -ENOMEM; 5056a4ed38d7SDouglas Fuller 5057a4ed38d7SDouglas Fuller for (i = 0; i < *num_watchers; i++) { 5058a4ed38d7SDouglas Fuller ret = decode_watcher(p, end, *watchers + i); 5059a4ed38d7SDouglas Fuller if (ret) { 5060a4ed38d7SDouglas Fuller kfree(*watchers); 5061a4ed38d7SDouglas Fuller return ret; 5062a4ed38d7SDouglas Fuller } 5063a4ed38d7SDouglas Fuller } 5064a4ed38d7SDouglas Fuller 5065a4ed38d7SDouglas Fuller return 0; 5066a4ed38d7SDouglas Fuller } 5067a4ed38d7SDouglas Fuller 5068a4ed38d7SDouglas Fuller /* 5069a4ed38d7SDouglas Fuller * On success, the caller is responsible for: 5070a4ed38d7SDouglas Fuller * 5071a4ed38d7SDouglas Fuller * kfree(watchers); 5072a4ed38d7SDouglas Fuller */ 5073a4ed38d7SDouglas Fuller int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, 5074a4ed38d7SDouglas Fuller struct ceph_object_id *oid, 5075a4ed38d7SDouglas Fuller struct ceph_object_locator *oloc, 5076a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 5077a4ed38d7SDouglas Fuller u32 *num_watchers) 5078a4ed38d7SDouglas Fuller { 5079a4ed38d7SDouglas Fuller struct ceph_osd_request *req; 5080a4ed38d7SDouglas Fuller struct page **pages; 5081a4ed38d7SDouglas Fuller int ret; 5082a4ed38d7SDouglas Fuller 5083a4ed38d7SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 5084a4ed38d7SDouglas Fuller if (!req) 5085a4ed38d7SDouglas Fuller return -ENOMEM; 5086a4ed38d7SDouglas Fuller 5087a4ed38d7SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 5088a4ed38d7SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 5089a4ed38d7SDouglas Fuller req->r_flags = CEPH_OSD_FLAG_READ; 5090a4ed38d7SDouglas Fuller 5091a4ed38d7SDouglas Fuller pages = ceph_alloc_page_vector(1, GFP_NOIO); 5092a4ed38d7SDouglas Fuller if (IS_ERR(pages)) { 5093a4ed38d7SDouglas Fuller ret = PTR_ERR(pages); 5094a4ed38d7SDouglas Fuller goto out_put_req; 5095a4ed38d7SDouglas Fuller } 5096a4ed38d7SDouglas Fuller 5097a4ed38d7SDouglas Fuller osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0); 5098a4ed38d7SDouglas Fuller ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers, 5099a4ed38d7SDouglas Fuller response_data), 5100a4ed38d7SDouglas Fuller pages, PAGE_SIZE, 0, false, true); 5101a4ed38d7SDouglas Fuller 510226f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 510326f887e0SIlya Dryomov if (ret) 510426f887e0SIlya Dryomov goto out_put_req; 510526f887e0SIlya Dryomov 5106a4ed38d7SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 5107a4ed38d7SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 5108a4ed38d7SDouglas Fuller if (ret >= 0) { 5109a4ed38d7SDouglas Fuller void *p = page_address(pages[0]); 5110a4ed38d7SDouglas Fuller void *const end = p + req->r_ops[0].outdata_len; 5111a4ed38d7SDouglas Fuller 5112a4ed38d7SDouglas Fuller ret = decode_watchers(&p, end, watchers, num_watchers); 5113a4ed38d7SDouglas Fuller } 5114a4ed38d7SDouglas Fuller 5115a4ed38d7SDouglas Fuller out_put_req: 5116a4ed38d7SDouglas Fuller ceph_osdc_put_request(req); 5117a4ed38d7SDouglas Fuller return ret; 5118a4ed38d7SDouglas Fuller } 5119a4ed38d7SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_list_watchers); 5120a4ed38d7SDouglas Fuller 5121b07d3c4bSIlya Dryomov /* 5122dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 5123dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 5124dd935f44SJosh Durgin */ 5125f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 5126dd935f44SJosh Durgin { 512799d16943SIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 5128dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 5129dd935f44SJosh Durgin } 5130dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 5131dd935f44SJosh Durgin 51327cca78c9SIlya Dryomov void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) 51337cca78c9SIlya Dryomov { 51347cca78c9SIlya Dryomov down_read(&osdc->lock); 51357cca78c9SIlya Dryomov maybe_request_map(osdc); 51367cca78c9SIlya Dryomov up_read(&osdc->lock); 51377cca78c9SIlya Dryomov } 51387cca78c9SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_maybe_request_map); 5139dd935f44SJosh Durgin 5140dd935f44SJosh Durgin /* 5141428a7158SDouglas Fuller * Execute an OSD class method on an object. 5142428a7158SDouglas Fuller * 5143428a7158SDouglas Fuller * @flags: CEPH_OSD_FLAG_* 51442544a020SIlya Dryomov * @resp_len: in/out param for reply length 5145428a7158SDouglas Fuller */ 5146428a7158SDouglas Fuller int ceph_osdc_call(struct ceph_osd_client *osdc, 5147428a7158SDouglas Fuller struct ceph_object_id *oid, 5148428a7158SDouglas Fuller struct ceph_object_locator *oloc, 5149428a7158SDouglas Fuller const char *class, const char *method, 5150428a7158SDouglas Fuller unsigned int flags, 5151428a7158SDouglas Fuller struct page *req_page, size_t req_len, 515268ada915SIlya Dryomov struct page **resp_pages, size_t *resp_len) 5153428a7158SDouglas Fuller { 5154428a7158SDouglas Fuller struct ceph_osd_request *req; 5155428a7158SDouglas Fuller int ret; 5156428a7158SDouglas Fuller 515768ada915SIlya Dryomov if (req_len > PAGE_SIZE) 51582544a020SIlya Dryomov return -E2BIG; 51592544a020SIlya Dryomov 5160428a7158SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 5161428a7158SDouglas Fuller if (!req) 5162428a7158SDouglas Fuller return -ENOMEM; 5163428a7158SDouglas Fuller 5164428a7158SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 5165428a7158SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 5166428a7158SDouglas Fuller req->r_flags = flags; 5167428a7158SDouglas Fuller 516824639ce5SIlya Dryomov ret = osd_req_op_cls_init(req, 0, class, method); 5169fe943d50SChengguang Xu if (ret) 5170fe943d50SChengguang Xu goto out_put_req; 5171fe943d50SChengguang Xu 5172428a7158SDouglas Fuller if (req_page) 5173428a7158SDouglas Fuller osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len, 5174428a7158SDouglas Fuller 0, false, false); 517568ada915SIlya Dryomov if (resp_pages) 517668ada915SIlya Dryomov osd_req_op_cls_response_data_pages(req, 0, resp_pages, 51772544a020SIlya Dryomov *resp_len, 0, false, false); 5178428a7158SDouglas Fuller 517926f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 518026f887e0SIlya Dryomov if (ret) 518126f887e0SIlya Dryomov goto out_put_req; 518226f887e0SIlya Dryomov 5183428a7158SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 5184428a7158SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 5185428a7158SDouglas Fuller if (ret >= 0) { 5186428a7158SDouglas Fuller ret = req->r_ops[0].rval; 518768ada915SIlya Dryomov if (resp_pages) 5188428a7158SDouglas Fuller *resp_len = req->r_ops[0].outdata_len; 5189428a7158SDouglas Fuller } 5190428a7158SDouglas Fuller 5191428a7158SDouglas Fuller out_put_req: 5192428a7158SDouglas Fuller ceph_osdc_put_request(req); 5193428a7158SDouglas Fuller return ret; 5194428a7158SDouglas Fuller } 5195428a7158SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_call); 5196428a7158SDouglas Fuller 5197428a7158SDouglas Fuller /* 5198120a75eaSYan, Zheng * reset all osd connections 5199120a75eaSYan, Zheng */ 5200120a75eaSYan, Zheng void ceph_osdc_reopen_osds(struct ceph_osd_client *osdc) 5201120a75eaSYan, Zheng { 5202120a75eaSYan, Zheng struct rb_node *n; 5203120a75eaSYan, Zheng 5204120a75eaSYan, Zheng down_write(&osdc->lock); 5205120a75eaSYan, Zheng for (n = rb_first(&osdc->osds); n; ) { 5206120a75eaSYan, Zheng struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 5207120a75eaSYan, Zheng 5208120a75eaSYan, Zheng n = rb_next(n); 5209120a75eaSYan, Zheng if (!reopen_osd(osd)) 5210120a75eaSYan, Zheng kick_osd_requests(osd); 5211120a75eaSYan, Zheng } 5212120a75eaSYan, Zheng up_write(&osdc->lock); 5213120a75eaSYan, Zheng } 5214120a75eaSYan, Zheng 5215120a75eaSYan, Zheng /* 52163d14c5d2SYehuda Sadeh * init, shutdown 52173d14c5d2SYehuda Sadeh */ 52183d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 52193d14c5d2SYehuda Sadeh { 52203d14c5d2SYehuda Sadeh int err; 52213d14c5d2SYehuda Sadeh 52223d14c5d2SYehuda Sadeh dout("init\n"); 52233d14c5d2SYehuda Sadeh osdc->client = client; 52245aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 52253d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 52263d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 52279dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 52285aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 52295aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 52305aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 5231264048afSIlya Dryomov osdc->last_linger_id = CEPH_LINGER_ID_START; 5232922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 52334609245eSIlya Dryomov osdc->map_checks = RB_ROOT; 52344609245eSIlya Dryomov osdc->linger_map_checks = RB_ROOT; 52353d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 52363d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 52373d14c5d2SYehuda Sadeh 52383d14c5d2SYehuda Sadeh err = -ENOMEM; 5239e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 5240e5253a7bSIlya Dryomov if (!osdc->osdmap) 5241e5253a7bSIlya Dryomov goto out; 5242e5253a7bSIlya Dryomov 52439e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 52449e767adbSIlya Dryomov ceph_osd_request_cache); 52453d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 5246e5253a7bSIlya Dryomov goto out_map; 52473d14c5d2SYehuda Sadeh 5248d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 52490d9c1ab3SIlya Dryomov PAGE_SIZE, CEPH_OSD_SLAB_OPS, 10, "osd_op"); 52503d14c5d2SYehuda Sadeh if (err < 0) 52513d14c5d2SYehuda Sadeh goto out_mempool; 5252d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 52530d9c1ab3SIlya Dryomov PAGE_SIZE, CEPH_OSD_SLAB_OPS, 10, 52540d9c1ab3SIlya Dryomov "osd_op_reply"); 52553d14c5d2SYehuda Sadeh if (err < 0) 52563d14c5d2SYehuda Sadeh goto out_msgpool; 5257a40c4f10SYehuda Sadeh 5258dbcae088SDan Carpenter err = -ENOMEM; 5259a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 5260dbcae088SDan Carpenter if (!osdc->notify_wq) 5261c172ec5cSIlya Dryomov goto out_msgpool_reply; 5262c172ec5cSIlya Dryomov 526388bc1922SIlya Dryomov osdc->completion_wq = create_singlethread_workqueue("ceph-completion"); 526488bc1922SIlya Dryomov if (!osdc->completion_wq) 526588bc1922SIlya Dryomov goto out_notify_wq; 526688bc1922SIlya Dryomov 5267fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 5268fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 5269b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 5270b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 5271b37ee1b9SIlya Dryomov 52723d14c5d2SYehuda Sadeh return 0; 52733d14c5d2SYehuda Sadeh 527488bc1922SIlya Dryomov out_notify_wq: 527588bc1922SIlya Dryomov destroy_workqueue(osdc->notify_wq); 5276c172ec5cSIlya Dryomov out_msgpool_reply: 5277c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 52783d14c5d2SYehuda Sadeh out_msgpool: 52793d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 52803d14c5d2SYehuda Sadeh out_mempool: 52813d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 5282e5253a7bSIlya Dryomov out_map: 5283e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 52843d14c5d2SYehuda Sadeh out: 52853d14c5d2SYehuda Sadeh return err; 52863d14c5d2SYehuda Sadeh } 52873d14c5d2SYehuda Sadeh 52883d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 52893d14c5d2SYehuda Sadeh { 529088bc1922SIlya Dryomov destroy_workqueue(osdc->completion_wq); 5291a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 52923d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 52933d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 529442a2c09fSIlya Dryomov 52955aea3dcdSIlya Dryomov down_write(&osdc->lock); 529642a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 529742a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 529842a2c09fSIlya Dryomov struct ceph_osd, o_node); 52995aea3dcdSIlya Dryomov close_osd(osd); 530042a2c09fSIlya Dryomov } 53015aea3dcdSIlya Dryomov up_write(&osdc->lock); 530202113a0fSElena Reshetova WARN_ON(refcount_read(&osdc->homeless_osd.o_ref) != 1); 53035aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 53045aea3dcdSIlya Dryomov 53055aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 5306922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 53074609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); 53084609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); 53095aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 53105aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 531142a2c09fSIlya Dryomov 53123d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 53133d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 53143d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 53153d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 53163d14c5d2SYehuda Sadeh } 53173d14c5d2SYehuda Sadeh 531823ddf9beSLuis Henriques static int osd_req_op_copy_from_init(struct ceph_osd_request *req, 531923ddf9beSLuis Henriques u64 src_snapid, u64 src_version, 532023ddf9beSLuis Henriques struct ceph_object_id *src_oid, 532123ddf9beSLuis Henriques struct ceph_object_locator *src_oloc, 532223ddf9beSLuis Henriques u32 src_fadvise_flags, 532323ddf9beSLuis Henriques u32 dst_fadvise_flags, 532478beb0ffSLuis Henriques u32 truncate_seq, u64 truncate_size, 532523ddf9beSLuis Henriques u8 copy_from_flags) 532623ddf9beSLuis Henriques { 532723ddf9beSLuis Henriques struct ceph_osd_req_op *op; 532823ddf9beSLuis Henriques struct page **pages; 532923ddf9beSLuis Henriques void *p, *end; 533023ddf9beSLuis Henriques 533123ddf9beSLuis Henriques pages = ceph_alloc_page_vector(1, GFP_KERNEL); 533223ddf9beSLuis Henriques if (IS_ERR(pages)) 533323ddf9beSLuis Henriques return PTR_ERR(pages); 533423ddf9beSLuis Henriques 533578beb0ffSLuis Henriques op = _osd_req_op_init(req, 0, CEPH_OSD_OP_COPY_FROM2, 533678beb0ffSLuis Henriques dst_fadvise_flags); 533723ddf9beSLuis Henriques op->copy_from.snapid = src_snapid; 533823ddf9beSLuis Henriques op->copy_from.src_version = src_version; 533923ddf9beSLuis Henriques op->copy_from.flags = copy_from_flags; 534023ddf9beSLuis Henriques op->copy_from.src_fadvise_flags = src_fadvise_flags; 534123ddf9beSLuis Henriques 534223ddf9beSLuis Henriques p = page_address(pages[0]); 534323ddf9beSLuis Henriques end = p + PAGE_SIZE; 534423ddf9beSLuis Henriques ceph_encode_string(&p, end, src_oid->name, src_oid->name_len); 534523ddf9beSLuis Henriques encode_oloc(&p, end, src_oloc); 534678beb0ffSLuis Henriques ceph_encode_32(&p, truncate_seq); 534778beb0ffSLuis Henriques ceph_encode_64(&p, truncate_size); 534823ddf9beSLuis Henriques op->indata_len = PAGE_SIZE - (end - p); 534923ddf9beSLuis Henriques 535023ddf9beSLuis Henriques ceph_osd_data_pages_init(&op->copy_from.osd_data, pages, 535123ddf9beSLuis Henriques op->indata_len, 0, false, true); 535223ddf9beSLuis Henriques return 0; 535323ddf9beSLuis Henriques } 535423ddf9beSLuis Henriques 535523ddf9beSLuis Henriques int ceph_osdc_copy_from(struct ceph_osd_client *osdc, 535623ddf9beSLuis Henriques u64 src_snapid, u64 src_version, 535723ddf9beSLuis Henriques struct ceph_object_id *src_oid, 535823ddf9beSLuis Henriques struct ceph_object_locator *src_oloc, 535923ddf9beSLuis Henriques u32 src_fadvise_flags, 536023ddf9beSLuis Henriques struct ceph_object_id *dst_oid, 536123ddf9beSLuis Henriques struct ceph_object_locator *dst_oloc, 536223ddf9beSLuis Henriques u32 dst_fadvise_flags, 536378beb0ffSLuis Henriques u32 truncate_seq, u64 truncate_size, 536423ddf9beSLuis Henriques u8 copy_from_flags) 536523ddf9beSLuis Henriques { 536623ddf9beSLuis Henriques struct ceph_osd_request *req; 536723ddf9beSLuis Henriques int ret; 536823ddf9beSLuis Henriques 536923ddf9beSLuis Henriques req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_KERNEL); 537023ddf9beSLuis Henriques if (!req) 537123ddf9beSLuis Henriques return -ENOMEM; 537223ddf9beSLuis Henriques 537323ddf9beSLuis Henriques req->r_flags = CEPH_OSD_FLAG_WRITE; 537423ddf9beSLuis Henriques 537523ddf9beSLuis Henriques ceph_oloc_copy(&req->r_t.base_oloc, dst_oloc); 537623ddf9beSLuis Henriques ceph_oid_copy(&req->r_t.base_oid, dst_oid); 537723ddf9beSLuis Henriques 537823ddf9beSLuis Henriques ret = osd_req_op_copy_from_init(req, src_snapid, src_version, src_oid, 537923ddf9beSLuis Henriques src_oloc, src_fadvise_flags, 538078beb0ffSLuis Henriques dst_fadvise_flags, truncate_seq, 538178beb0ffSLuis Henriques truncate_size, copy_from_flags); 538223ddf9beSLuis Henriques if (ret) 538323ddf9beSLuis Henriques goto out; 538423ddf9beSLuis Henriques 538523ddf9beSLuis Henriques ret = ceph_osdc_alloc_messages(req, GFP_KERNEL); 538623ddf9beSLuis Henriques if (ret) 538723ddf9beSLuis Henriques goto out; 538823ddf9beSLuis Henriques 538923ddf9beSLuis Henriques ceph_osdc_start_request(osdc, req, false); 539023ddf9beSLuis Henriques ret = ceph_osdc_wait_request(osdc, req); 539123ddf9beSLuis Henriques 539223ddf9beSLuis Henriques out: 539323ddf9beSLuis Henriques ceph_osdc_put_request(req); 539423ddf9beSLuis Henriques return ret; 539523ddf9beSLuis Henriques } 539623ddf9beSLuis Henriques EXPORT_SYMBOL(ceph_osdc_copy_from); 539723ddf9beSLuis Henriques 539857a35dfbSChengguang Xu int __init ceph_osdc_setup(void) 53995522ae0bSAlex Elder { 54003f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 54013f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 54023f1af42aSIlya Dryomov 54035522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 54043f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 54053f1af42aSIlya Dryomov 0, 0, NULL); 54065522ae0bSAlex Elder 54075522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 54085522ae0bSAlex Elder } 54095522ae0bSAlex Elder 54105522ae0bSAlex Elder void ceph_osdc_cleanup(void) 54115522ae0bSAlex Elder { 54125522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 54135522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 54145522ae0bSAlex Elder ceph_osd_request_cache = NULL; 54155522ae0bSAlex Elder } 54165522ae0bSAlex Elder 54173d14c5d2SYehuda Sadeh /* 54183d14c5d2SYehuda Sadeh * handle incoming message 54193d14c5d2SYehuda Sadeh */ 54203d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 54213d14c5d2SYehuda Sadeh { 54223d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 54235aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 54243d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 54253d14c5d2SYehuda Sadeh 54263d14c5d2SYehuda Sadeh switch (type) { 54273d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 54283d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 54293d14c5d2SYehuda Sadeh break; 54303d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 54315aea3dcdSIlya Dryomov handle_reply(osd, msg); 54323d14c5d2SYehuda Sadeh break; 5433a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5434a02a946dSIlya Dryomov handle_backoff(osd, msg); 5435a02a946dSIlya Dryomov break; 5436a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 5437a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 5438a40c4f10SYehuda Sadeh break; 54393d14c5d2SYehuda Sadeh 54403d14c5d2SYehuda Sadeh default: 54413d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 54423d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 54433d14c5d2SYehuda Sadeh } 54445aea3dcdSIlya Dryomov 54453d14c5d2SYehuda Sadeh ceph_msg_put(msg); 54463d14c5d2SYehuda Sadeh } 54473d14c5d2SYehuda Sadeh 54483d14c5d2SYehuda Sadeh /* 5449d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 5450d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 5451d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 54523d14c5d2SYehuda Sadeh */ 54533d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 54543d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 54553d14c5d2SYehuda Sadeh int *skip) 54563d14c5d2SYehuda Sadeh { 54573d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 54583d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 54595aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 54603d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 54613f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 54623d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 54635aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 54643d14c5d2SYehuda Sadeh 54655aea3dcdSIlya Dryomov down_read(&osdc->lock); 54665aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 54675aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 54685aea3dcdSIlya Dryomov *skip = 1; 54695aea3dcdSIlya Dryomov goto out_unlock_osdc; 54705aea3dcdSIlya Dryomov } 54715aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 54725aea3dcdSIlya Dryomov 54735aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 54745aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 54753d14c5d2SYehuda Sadeh if (!req) { 5476cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 5477cd8140c6SIlya Dryomov osd->o_osd, tid); 5478d15f9d69SIlya Dryomov *skip = 1; 54795aea3dcdSIlya Dryomov goto out_unlock_session; 54803d14c5d2SYehuda Sadeh } 54813d14c5d2SYehuda Sadeh 54828921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 54833d14c5d2SYehuda Sadeh 5484f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 5485d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 5486d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 5487d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 54883f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 54893f0a4ac5SIlya Dryomov false); 54903d14c5d2SYehuda Sadeh if (!m) 54915aea3dcdSIlya Dryomov goto out_unlock_session; 54923d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 54933d14c5d2SYehuda Sadeh req->r_reply = m; 54943d14c5d2SYehuda Sadeh } 54953d14c5d2SYehuda Sadeh 5496d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 5497d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 5498d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 5499d15f9d69SIlya Dryomov req->r_reply->data_length); 55003d14c5d2SYehuda Sadeh m = NULL; 5501d15f9d69SIlya Dryomov *skip = 1; 55025aea3dcdSIlya Dryomov goto out_unlock_session; 55033d14c5d2SYehuda Sadeh } 5504d15f9d69SIlya Dryomov 5505d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 55063d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 55073d14c5d2SYehuda Sadeh 55085aea3dcdSIlya Dryomov out_unlock_session: 55095aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 55105aea3dcdSIlya Dryomov out_unlock_osdc: 55115aea3dcdSIlya Dryomov up_read(&osdc->lock); 55123d14c5d2SYehuda Sadeh return m; 55133d14c5d2SYehuda Sadeh } 55143d14c5d2SYehuda Sadeh 551519079203SIlya Dryomov static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) 551619079203SIlya Dryomov { 551719079203SIlya Dryomov struct ceph_msg *m; 551819079203SIlya Dryomov int type = le16_to_cpu(hdr->type); 551919079203SIlya Dryomov u32 front_len = le32_to_cpu(hdr->front_len); 552019079203SIlya Dryomov u32 data_len = le32_to_cpu(hdr->data_len); 552119079203SIlya Dryomov 55220d9c1ab3SIlya Dryomov m = ceph_msg_new2(type, front_len, 1, GFP_NOIO, false); 552319079203SIlya Dryomov if (!m) 552419079203SIlya Dryomov return NULL; 552519079203SIlya Dryomov 552619079203SIlya Dryomov if (data_len) { 552719079203SIlya Dryomov struct page **pages; 552819079203SIlya Dryomov 552919079203SIlya Dryomov pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), 553019079203SIlya Dryomov GFP_NOIO); 5531c22e853aSWei Yongjun if (IS_ERR(pages)) { 553219079203SIlya Dryomov ceph_msg_put(m); 553319079203SIlya Dryomov return NULL; 553419079203SIlya Dryomov } 553519079203SIlya Dryomov 5536e8862740SIlya Dryomov ceph_msg_data_add_pages(m, pages, data_len, 0, true); 553719079203SIlya Dryomov } 553819079203SIlya Dryomov 553919079203SIlya Dryomov return m; 554019079203SIlya Dryomov } 554119079203SIlya Dryomov 55423d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 55433d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 55443d14c5d2SYehuda Sadeh int *skip) 55453d14c5d2SYehuda Sadeh { 55463d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 55473d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 55483d14c5d2SYehuda Sadeh 55491c20f2d2SAlex Elder *skip = 0; 55503d14c5d2SYehuda Sadeh switch (type) { 55513d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 5552a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5553a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 555419079203SIlya Dryomov return alloc_msg_with_page_vector(hdr); 55553d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 55563d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 55573d14c5d2SYehuda Sadeh default: 55585aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 55595aea3dcdSIlya Dryomov osd->o_osd, type); 55603d14c5d2SYehuda Sadeh *skip = 1; 55613d14c5d2SYehuda Sadeh return NULL; 55623d14c5d2SYehuda Sadeh } 55633d14c5d2SYehuda Sadeh } 55643d14c5d2SYehuda Sadeh 55653d14c5d2SYehuda Sadeh /* 55663d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 55673d14c5d2SYehuda Sadeh */ 55683d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 55693d14c5d2SYehuda Sadeh { 55703d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 55713d14c5d2SYehuda Sadeh if (get_osd(osd)) 55723d14c5d2SYehuda Sadeh return con; 55733d14c5d2SYehuda Sadeh return NULL; 55743d14c5d2SYehuda Sadeh } 55753d14c5d2SYehuda Sadeh 55763d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 55773d14c5d2SYehuda Sadeh { 55783d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 55793d14c5d2SYehuda Sadeh put_osd(osd); 55803d14c5d2SYehuda Sadeh } 55813d14c5d2SYehuda Sadeh 55823d14c5d2SYehuda Sadeh /* 55833d14c5d2SYehuda Sadeh * authentication 55843d14c5d2SYehuda Sadeh */ 5585a3530df3SAlex Elder /* 5586a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 5587a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 5588a3530df3SAlex Elder */ 5589a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 55908f43fb53SAlex Elder int *proto, int force_new) 55913d14c5d2SYehuda Sadeh { 55923d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 55933d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 55943d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 559574f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 55963d14c5d2SYehuda Sadeh 559774f1869fSAlex Elder if (force_new && auth->authorizer) { 55986c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 559974f1869fSAlex Elder auth->authorizer = NULL; 56003d14c5d2SYehuda Sadeh } 560127859f97SSage Weil if (!auth->authorizer) { 560227859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 5603a3530df3SAlex Elder auth); 56043d14c5d2SYehuda Sadeh if (ret) 5605a3530df3SAlex Elder return ERR_PTR(ret); 560627859f97SSage Weil } else { 560727859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 56080bed9b5cSSage Weil auth); 56090bed9b5cSSage Weil if (ret) 56100bed9b5cSSage Weil return ERR_PTR(ret); 56113d14c5d2SYehuda Sadeh } 56123d14c5d2SYehuda Sadeh *proto = ac->protocol; 561374f1869fSAlex Elder 5614a3530df3SAlex Elder return auth; 56153d14c5d2SYehuda Sadeh } 56163d14c5d2SYehuda Sadeh 56176daca13dSIlya Dryomov static int add_authorizer_challenge(struct ceph_connection *con, 56186daca13dSIlya Dryomov void *challenge_buf, int challenge_buf_len) 56196daca13dSIlya Dryomov { 56206daca13dSIlya Dryomov struct ceph_osd *o = con->private; 56216daca13dSIlya Dryomov struct ceph_osd_client *osdc = o->o_osdc; 56226daca13dSIlya Dryomov struct ceph_auth_client *ac = osdc->client->monc.auth; 56236daca13dSIlya Dryomov 56246daca13dSIlya Dryomov return ceph_auth_add_authorizer_challenge(ac, o->o_auth.authorizer, 56256daca13dSIlya Dryomov challenge_buf, challenge_buf_len); 56266daca13dSIlya Dryomov } 56273d14c5d2SYehuda Sadeh 56280dde5848SIlya Dryomov static int verify_authorizer_reply(struct ceph_connection *con) 56293d14c5d2SYehuda Sadeh { 56303d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 56313d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 56323d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 56333d14c5d2SYehuda Sadeh 56340dde5848SIlya Dryomov return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer); 56353d14c5d2SYehuda Sadeh } 56363d14c5d2SYehuda Sadeh 56373d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 56383d14c5d2SYehuda Sadeh { 56393d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 56403d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 56413d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 56423d14c5d2SYehuda Sadeh 564327859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 56443d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 56453d14c5d2SYehuda Sadeh } 56463d14c5d2SYehuda Sadeh 56478cb441c0SIlya Dryomov static void osd_reencode_message(struct ceph_msg *msg) 56488cb441c0SIlya Dryomov { 5649914902afSIlya Dryomov int type = le16_to_cpu(msg->hdr.type); 5650914902afSIlya Dryomov 5651914902afSIlya Dryomov if (type == CEPH_MSG_OSD_OP) 56528cb441c0SIlya Dryomov encode_request_finish(msg); 56538cb441c0SIlya Dryomov } 56548cb441c0SIlya Dryomov 565579dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 565633d07337SYan, Zheng { 565779dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 565833d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 565979dbd1baSIlya Dryomov 566033d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 566133d07337SYan, Zheng } 566233d07337SYan, Zheng 566379dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 566433d07337SYan, Zheng { 566579dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 566633d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 566779dbd1baSIlya Dryomov 566833d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 566933d07337SYan, Zheng } 567033d07337SYan, Zheng 56713d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 56723d14c5d2SYehuda Sadeh .get = get_osd_con, 56733d14c5d2SYehuda Sadeh .put = put_osd_con, 56743d14c5d2SYehuda Sadeh .dispatch = dispatch, 56753d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 56766daca13dSIlya Dryomov .add_authorizer_challenge = add_authorizer_challenge, 56773d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 56783d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 56793d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 56808cb441c0SIlya Dryomov .reencode_message = osd_reencode_message, 568179dbd1baSIlya Dryomov .sign_message = osd_sign_message, 568279dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 56835aea3dcdSIlya Dryomov .fault = osd_fault, 56843d14c5d2SYehuda Sadeh }; 5685