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; 40523ddf9beSLuis Henriques case CEPH_OSD_OP_COPY_FROM: 40623ddf9beSLuis Henriques ceph_osd_data_release(&op->copy_from.osd_data); 40723ddf9beSLuis Henriques break; 4085476492fSAlex Elder default: 4095476492fSAlex Elder break; 4105476492fSAlex Elder } 411c54d47bfSAlex Elder } 412c54d47bfSAlex Elder 4133d14c5d2SYehuda Sadeh /* 41463244fa1SIlya Dryomov * Assumes @t is zero-initialized. 41563244fa1SIlya Dryomov */ 41663244fa1SIlya Dryomov static void target_init(struct ceph_osd_request_target *t) 41763244fa1SIlya Dryomov { 41863244fa1SIlya Dryomov ceph_oid_init(&t->base_oid); 41963244fa1SIlya Dryomov ceph_oloc_init(&t->base_oloc); 42063244fa1SIlya Dryomov ceph_oid_init(&t->target_oid); 42163244fa1SIlya Dryomov ceph_oloc_init(&t->target_oloc); 42263244fa1SIlya Dryomov 42363244fa1SIlya Dryomov ceph_osds_init(&t->acting); 42463244fa1SIlya Dryomov ceph_osds_init(&t->up); 42563244fa1SIlya Dryomov t->size = -1; 42663244fa1SIlya Dryomov t->min_size = -1; 42763244fa1SIlya Dryomov 42863244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 42963244fa1SIlya Dryomov } 43063244fa1SIlya Dryomov 431922dab61SIlya Dryomov static void target_copy(struct ceph_osd_request_target *dest, 432922dab61SIlya Dryomov const struct ceph_osd_request_target *src) 433922dab61SIlya Dryomov { 434922dab61SIlya Dryomov ceph_oid_copy(&dest->base_oid, &src->base_oid); 435922dab61SIlya Dryomov ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); 436922dab61SIlya Dryomov ceph_oid_copy(&dest->target_oid, &src->target_oid); 437922dab61SIlya Dryomov ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); 438922dab61SIlya Dryomov 439922dab61SIlya Dryomov dest->pgid = src->pgid; /* struct */ 440dc98ff72SIlya Dryomov dest->spgid = src->spgid; /* struct */ 441922dab61SIlya Dryomov dest->pg_num = src->pg_num; 442922dab61SIlya Dryomov dest->pg_num_mask = src->pg_num_mask; 443922dab61SIlya Dryomov ceph_osds_copy(&dest->acting, &src->acting); 444922dab61SIlya Dryomov ceph_osds_copy(&dest->up, &src->up); 445922dab61SIlya Dryomov dest->size = src->size; 446922dab61SIlya Dryomov dest->min_size = src->min_size; 447922dab61SIlya Dryomov dest->sort_bitwise = src->sort_bitwise; 448922dab61SIlya Dryomov 449922dab61SIlya Dryomov dest->flags = src->flags; 450922dab61SIlya Dryomov dest->paused = src->paused; 451922dab61SIlya Dryomov 45204c7d789SIlya Dryomov dest->epoch = src->epoch; 453dc93e0e2SIlya Dryomov dest->last_force_resend = src->last_force_resend; 454dc93e0e2SIlya Dryomov 455922dab61SIlya Dryomov dest->osd = src->osd; 456922dab61SIlya Dryomov } 457922dab61SIlya Dryomov 45863244fa1SIlya Dryomov static void target_destroy(struct ceph_osd_request_target *t) 45963244fa1SIlya Dryomov { 46063244fa1SIlya Dryomov ceph_oid_destroy(&t->base_oid); 46130c156d9SYan, Zheng ceph_oloc_destroy(&t->base_oloc); 46263244fa1SIlya Dryomov ceph_oid_destroy(&t->target_oid); 46330c156d9SYan, Zheng ceph_oloc_destroy(&t->target_oloc); 46463244fa1SIlya Dryomov } 46563244fa1SIlya Dryomov 46663244fa1SIlya Dryomov /* 4673d14c5d2SYehuda Sadeh * requests 4683d14c5d2SYehuda Sadeh */ 4693540bfdbSIlya Dryomov static void request_release_checks(struct ceph_osd_request *req) 4703540bfdbSIlya Dryomov { 4713540bfdbSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 4724609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node)); 47394e85771SIlya Dryomov WARN_ON(!list_empty(&req->r_private_item)); 4743540bfdbSIlya Dryomov WARN_ON(req->r_osd); 4753540bfdbSIlya Dryomov } 4763540bfdbSIlya Dryomov 4779e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 4783d14c5d2SYehuda Sadeh { 4799e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 4809e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 4815476492fSAlex Elder unsigned int which; 4823d14c5d2SYehuda Sadeh 4839e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 4849e94af20SIlya Dryomov req->r_request, req->r_reply); 4853540bfdbSIlya Dryomov request_release_checks(req); 4869e94af20SIlya Dryomov 4873d14c5d2SYehuda Sadeh if (req->r_request) 4883d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 4895aea3dcdSIlya Dryomov if (req->r_reply) 490ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 4910fff87ecSAlex Elder 4925476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 4935476492fSAlex Elder osd_req_op_data_release(req, which); 4940fff87ecSAlex Elder 495a66dd383SIlya Dryomov target_destroy(&req->r_t); 4963d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 497d30291b9SIlya Dryomov 4983d14c5d2SYehuda Sadeh if (req->r_mempool) 4993d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 5003f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 5015522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 5023f1af42aSIlya Dryomov else 5033f1af42aSIlya Dryomov kfree(req); 5043d14c5d2SYehuda Sadeh } 5059e94af20SIlya Dryomov 5069e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 5079e94af20SIlya Dryomov { 5089e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 5092c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 5109e94af20SIlya Dryomov kref_get(&req->r_kref); 5119e94af20SIlya Dryomov } 5129e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 5139e94af20SIlya Dryomov 5149e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 5159e94af20SIlya Dryomov { 5163ed97d63SIlya Dryomov if (req) { 5179e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 5182c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 5199e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 5209e94af20SIlya Dryomov } 5213ed97d63SIlya Dryomov } 5229e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 5233d14c5d2SYehuda Sadeh 5243540bfdbSIlya Dryomov static void request_init(struct ceph_osd_request *req) 5253540bfdbSIlya Dryomov { 5263540bfdbSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 5273540bfdbSIlya Dryomov memset(req, 0, sizeof(*req)); 5283540bfdbSIlya Dryomov 5293540bfdbSIlya Dryomov kref_init(&req->r_kref); 5303540bfdbSIlya Dryomov init_completion(&req->r_completion); 5313540bfdbSIlya Dryomov RB_CLEAR_NODE(&req->r_node); 5324609245eSIlya Dryomov RB_CLEAR_NODE(&req->r_mc_node); 53394e85771SIlya Dryomov INIT_LIST_HEAD(&req->r_private_item); 5343540bfdbSIlya Dryomov 5353540bfdbSIlya Dryomov target_init(&req->r_t); 5363540bfdbSIlya Dryomov } 5373540bfdbSIlya Dryomov 538922dab61SIlya Dryomov /* 539922dab61SIlya Dryomov * This is ugly, but it allows us to reuse linger registration and ping 540922dab61SIlya Dryomov * requests, keeping the structure of the code around send_linger{_ping}() 541922dab61SIlya Dryomov * reasonable. Setting up a min_nr=2 mempool for each linger request 542922dab61SIlya Dryomov * and dealing with copying ops (this blasts req only, watch op remains 543922dab61SIlya Dryomov * intact) isn't any better. 544922dab61SIlya Dryomov */ 545922dab61SIlya Dryomov static void request_reinit(struct ceph_osd_request *req) 546922dab61SIlya Dryomov { 547922dab61SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 548922dab61SIlya Dryomov bool mempool = req->r_mempool; 549922dab61SIlya Dryomov unsigned int num_ops = req->r_num_ops; 550922dab61SIlya Dryomov u64 snapid = req->r_snapid; 551922dab61SIlya Dryomov struct ceph_snap_context *snapc = req->r_snapc; 552922dab61SIlya Dryomov bool linger = req->r_linger; 553922dab61SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 554922dab61SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 555922dab61SIlya Dryomov 556922dab61SIlya Dryomov dout("%s req %p\n", __func__, req); 5572c935bc5SPeter Zijlstra WARN_ON(kref_read(&req->r_kref) != 1); 558922dab61SIlya Dryomov request_release_checks(req); 559922dab61SIlya Dryomov 5602c935bc5SPeter Zijlstra WARN_ON(kref_read(&request_msg->kref) != 1); 5612c935bc5SPeter Zijlstra WARN_ON(kref_read(&reply_msg->kref) != 1); 562922dab61SIlya Dryomov target_destroy(&req->r_t); 563922dab61SIlya Dryomov 564922dab61SIlya Dryomov request_init(req); 565922dab61SIlya Dryomov req->r_osdc = osdc; 566922dab61SIlya Dryomov req->r_mempool = mempool; 567922dab61SIlya Dryomov req->r_num_ops = num_ops; 568922dab61SIlya Dryomov req->r_snapid = snapid; 569922dab61SIlya Dryomov req->r_snapc = snapc; 570922dab61SIlya Dryomov req->r_linger = linger; 571922dab61SIlya Dryomov req->r_request = request_msg; 572922dab61SIlya Dryomov req->r_reply = reply_msg; 573922dab61SIlya Dryomov } 574922dab61SIlya Dryomov 5753d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 5763d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5771b83bef2SSage Weil unsigned int num_ops, 5783d14c5d2SYehuda Sadeh bool use_mempool, 57954a54007SAlex Elder gfp_t gfp_flags) 5803d14c5d2SYehuda Sadeh { 5813d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5823d14c5d2SYehuda Sadeh 5833d14c5d2SYehuda Sadeh if (use_mempool) { 5843f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 5853d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 5863f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 5873f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 5883d14c5d2SYehuda Sadeh } else { 5893f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 590acafe7e3SKees Cook req = kmalloc(struct_size(req, r_ops, num_ops), gfp_flags); 5913d14c5d2SYehuda Sadeh } 5923f1af42aSIlya Dryomov if (unlikely(!req)) 5933d14c5d2SYehuda Sadeh return NULL; 5943d14c5d2SYehuda Sadeh 5953540bfdbSIlya Dryomov request_init(req); 5963d14c5d2SYehuda Sadeh req->r_osdc = osdc; 5973d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 59879528734SAlex Elder req->r_num_ops = num_ops; 59984127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 60084127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 6013d14c5d2SYehuda Sadeh 60213d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 60313d1ad16SIlya Dryomov return req; 6043f1af42aSIlya Dryomov } 60513d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 6063f1af42aSIlya Dryomov 6072e59ffd1SIlya Dryomov static int ceph_oloc_encoding_size(const struct ceph_object_locator *oloc) 60830c156d9SYan, Zheng { 60930c156d9SYan, Zheng return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0); 61030c156d9SYan, Zheng } 61130c156d9SYan, Zheng 6120d9c1ab3SIlya Dryomov static int __ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp, 6130d9c1ab3SIlya Dryomov int num_request_data_items, 6140d9c1ab3SIlya Dryomov int num_reply_data_items) 61513d1ad16SIlya Dryomov { 61613d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 61713d1ad16SIlya Dryomov struct ceph_msg *msg; 61813d1ad16SIlya Dryomov int msg_size; 6193d14c5d2SYehuda Sadeh 6200d9c1ab3SIlya Dryomov WARN_ON(req->r_request || req->r_reply); 621d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 62230c156d9SYan, Zheng WARN_ON(ceph_oloc_empty(&req->r_base_oloc)); 623d30291b9SIlya Dryomov 62413d1ad16SIlya Dryomov /* create request message */ 6258cb441c0SIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 6268cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 6278cb441c0SIlya Dryomov msg_size += 4 + 4 + 4; /* hash, osdmap_epoch, flags */ 6288cb441c0SIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 6298cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid); /* reqid */ 6308cb441c0SIlya Dryomov msg_size += sizeof(struct ceph_blkin_trace_info); /* trace */ 6318cb441c0SIlya Dryomov msg_size += 4 + sizeof(struct ceph_timespec); /* client_inc, mtime */ 63230c156d9SYan, Zheng msg_size += CEPH_ENCODING_START_BLK_LEN + 63330c156d9SYan, Zheng ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */ 63413d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 63513d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 636ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 637ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 63813d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 6398cb441c0SIlya Dryomov msg_size += 4 + 8; /* retry_attempt, features */ 640ae458f5aSIlya Dryomov 64113d1ad16SIlya Dryomov if (req->r_mempool) 6420d9c1ab3SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op, msg_size, 6430d9c1ab3SIlya Dryomov num_request_data_items); 6443d14c5d2SYehuda Sadeh else 6450d9c1ab3SIlya Dryomov msg = ceph_msg_new2(CEPH_MSG_OSD_OP, msg_size, 6460d9c1ab3SIlya Dryomov num_request_data_items, gfp, true); 64713d1ad16SIlya Dryomov if (!msg) 64813d1ad16SIlya Dryomov return -ENOMEM; 6493d14c5d2SYehuda Sadeh 6503d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 6513d14c5d2SYehuda Sadeh req->r_request = msg; 6523d14c5d2SYehuda Sadeh 65313d1ad16SIlya Dryomov /* create reply message */ 65413d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 655711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 656711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 65713d1ad16SIlya Dryomov 65813d1ad16SIlya Dryomov if (req->r_mempool) 6590d9c1ab3SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, msg_size, 6600d9c1ab3SIlya Dryomov num_reply_data_items); 66113d1ad16SIlya Dryomov else 6620d9c1ab3SIlya Dryomov msg = ceph_msg_new2(CEPH_MSG_OSD_OPREPLY, msg_size, 6630d9c1ab3SIlya Dryomov num_reply_data_items, gfp, true); 66413d1ad16SIlya Dryomov if (!msg) 66513d1ad16SIlya Dryomov return -ENOMEM; 66613d1ad16SIlya Dryomov 66713d1ad16SIlya Dryomov req->r_reply = msg; 66813d1ad16SIlya Dryomov 66913d1ad16SIlya Dryomov return 0; 67013d1ad16SIlya Dryomov } 6713d14c5d2SYehuda Sadeh 672a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 673a8dd0a37SAlex Elder { 674a8dd0a37SAlex Elder switch (opcode) { 67570b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 67670b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 67770b5bfa3SIlya Dryomov #undef GENERATE_CASE 678a8dd0a37SAlex Elder default: 679a8dd0a37SAlex Elder return false; 680a8dd0a37SAlex Elder } 681a8dd0a37SAlex Elder } 682a8dd0a37SAlex Elder 6830d9c1ab3SIlya Dryomov static void get_num_data_items(struct ceph_osd_request *req, 6840d9c1ab3SIlya Dryomov int *num_request_data_items, 6850d9c1ab3SIlya Dryomov int *num_reply_data_items) 6860d9c1ab3SIlya Dryomov { 6870d9c1ab3SIlya Dryomov struct ceph_osd_req_op *op; 6880d9c1ab3SIlya Dryomov 6890d9c1ab3SIlya Dryomov *num_request_data_items = 0; 6900d9c1ab3SIlya Dryomov *num_reply_data_items = 0; 6910d9c1ab3SIlya Dryomov 6920d9c1ab3SIlya Dryomov for (op = req->r_ops; op != &req->r_ops[req->r_num_ops]; op++) { 6930d9c1ab3SIlya Dryomov switch (op->op) { 6940d9c1ab3SIlya Dryomov /* request */ 6950d9c1ab3SIlya Dryomov case CEPH_OSD_OP_WRITE: 6960d9c1ab3SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 6970d9c1ab3SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 6980d9c1ab3SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 6990d9c1ab3SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 70023ddf9beSLuis Henriques case CEPH_OSD_OP_COPY_FROM: 7010d9c1ab3SIlya Dryomov *num_request_data_items += 1; 7020d9c1ab3SIlya Dryomov break; 7030d9c1ab3SIlya Dryomov 7040d9c1ab3SIlya Dryomov /* reply */ 7050d9c1ab3SIlya Dryomov case CEPH_OSD_OP_STAT: 7060d9c1ab3SIlya Dryomov case CEPH_OSD_OP_READ: 7070d9c1ab3SIlya Dryomov case CEPH_OSD_OP_LIST_WATCHERS: 7080d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 7090d9c1ab3SIlya Dryomov break; 7100d9c1ab3SIlya Dryomov 7110d9c1ab3SIlya Dryomov /* both */ 7120d9c1ab3SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 7130d9c1ab3SIlya Dryomov *num_request_data_items += 1; 7140d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 7150d9c1ab3SIlya Dryomov break; 7160d9c1ab3SIlya Dryomov case CEPH_OSD_OP_CALL: 7170d9c1ab3SIlya Dryomov *num_request_data_items += 2; 7180d9c1ab3SIlya Dryomov *num_reply_data_items += 1; 7190d9c1ab3SIlya Dryomov break; 7200d9c1ab3SIlya Dryomov 7210d9c1ab3SIlya Dryomov default: 7220d9c1ab3SIlya Dryomov WARN_ON(!osd_req_opcode_valid(op->op)); 7230d9c1ab3SIlya Dryomov break; 7240d9c1ab3SIlya Dryomov } 7250d9c1ab3SIlya Dryomov } 7260d9c1ab3SIlya Dryomov } 7270d9c1ab3SIlya Dryomov 7280d9c1ab3SIlya Dryomov /* 7290d9c1ab3SIlya Dryomov * oid, oloc and OSD op opcode(s) must be filled in before this function 7300d9c1ab3SIlya Dryomov * is called. 7310d9c1ab3SIlya Dryomov */ 7320d9c1ab3SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 7330d9c1ab3SIlya Dryomov { 7340d9c1ab3SIlya Dryomov int num_request_data_items, num_reply_data_items; 7350d9c1ab3SIlya Dryomov 7360d9c1ab3SIlya Dryomov get_num_data_items(req, &num_request_data_items, &num_reply_data_items); 7370d9c1ab3SIlya Dryomov return __ceph_osdc_alloc_messages(req, gfp, num_request_data_items, 7380d9c1ab3SIlya Dryomov num_reply_data_items); 7390d9c1ab3SIlya Dryomov } 7400d9c1ab3SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 7410d9c1ab3SIlya Dryomov 74233803f33SAlex Elder /* 74333803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 74433803f33SAlex Elder * other information associated with them. It also serves as a 74533803f33SAlex Elder * common init routine for all the other init functions, below. 74633803f33SAlex Elder */ 747c99d2d4aSAlex Elder static struct ceph_osd_req_op * 74849719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 749144cba14SYan, Zheng u16 opcode, u32 flags) 75033803f33SAlex Elder { 751c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 752c99d2d4aSAlex Elder 753c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 75433803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 75533803f33SAlex Elder 756c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 75733803f33SAlex Elder memset(op, 0, sizeof (*op)); 75833803f33SAlex Elder op->op = opcode; 759144cba14SYan, Zheng op->flags = flags; 760c99d2d4aSAlex Elder 761c99d2d4aSAlex Elder return op; 76233803f33SAlex Elder } 76333803f33SAlex Elder 76449719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 765144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 76649719778SAlex Elder { 767144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 76849719778SAlex Elder } 76949719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 77049719778SAlex Elder 771c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 772c99d2d4aSAlex Elder unsigned int which, u16 opcode, 77333803f33SAlex Elder u64 offset, u64 length, 77433803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 77533803f33SAlex Elder { 776144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 777144cba14SYan, Zheng opcode, 0); 77833803f33SAlex Elder size_t payload_len = 0; 77933803f33SAlex Elder 780ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 781e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 782e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 78333803f33SAlex Elder 78433803f33SAlex Elder op->extent.offset = offset; 78533803f33SAlex Elder op->extent.length = length; 78633803f33SAlex Elder op->extent.truncate_size = truncate_size; 78733803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 788e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 78933803f33SAlex Elder payload_len += length; 79033803f33SAlex Elder 791de2aa102SIlya Dryomov op->indata_len = payload_len; 79233803f33SAlex Elder } 79333803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 79433803f33SAlex Elder 795c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 796c99d2d4aSAlex Elder unsigned int which, u64 length) 797e5975c7cSAlex Elder { 798c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 799c99d2d4aSAlex Elder u64 previous; 800c99d2d4aSAlex Elder 801c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 802c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 803c99d2d4aSAlex Elder previous = op->extent.length; 804e5975c7cSAlex Elder 805e5975c7cSAlex Elder if (length == previous) 806e5975c7cSAlex Elder return; /* Nothing to do */ 807e5975c7cSAlex Elder BUG_ON(length > previous); 808e5975c7cSAlex Elder 809e5975c7cSAlex Elder op->extent.length = length; 810d641df81SYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 811de2aa102SIlya Dryomov op->indata_len -= previous - length; 812e5975c7cSAlex Elder } 813e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 814e5975c7cSAlex Elder 8152c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 8162c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 8172c63f49aSYan, Zheng { 8182c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 8192c63f49aSYan, Zheng 8202c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 8212c63f49aSYan, Zheng 8222c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 8232c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 8242c63f49aSYan, Zheng /* dup previous one */ 8252c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 8262c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 8272c63f49aSYan, Zheng op->extent = prev_op->extent; 8282c63f49aSYan, Zheng /* adjust offset */ 8292c63f49aSYan, Zheng op->extent.offset += offset_inc; 8302c63f49aSYan, Zheng op->extent.length -= offset_inc; 8312c63f49aSYan, Zheng 8322c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 8332c63f49aSYan, Zheng op->indata_len -= offset_inc; 8342c63f49aSYan, Zheng } 8352c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 8362c63f49aSYan, Zheng 837fe943d50SChengguang Xu int osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 83824639ce5SIlya Dryomov const char *class, const char *method) 83933803f33SAlex Elder { 84024639ce5SIlya Dryomov struct ceph_osd_req_op *op; 8415f562df5SAlex Elder struct ceph_pagelist *pagelist; 84233803f33SAlex Elder size_t payload_len = 0; 84333803f33SAlex Elder size_t size; 84433803f33SAlex Elder 84524639ce5SIlya Dryomov op = _osd_req_op_init(osd_req, which, CEPH_OSD_OP_CALL, 0); 84633803f33SAlex Elder 84733165d47SIlya Dryomov pagelist = ceph_pagelist_alloc(GFP_NOFS); 848fe943d50SChengguang Xu if (!pagelist) 849fe943d50SChengguang Xu return -ENOMEM; 850fe943d50SChengguang Xu 85133803f33SAlex Elder op->cls.class_name = class; 85233803f33SAlex Elder size = strlen(class); 85333803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 85433803f33SAlex Elder op->cls.class_len = size; 8555f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 85633803f33SAlex Elder payload_len += size; 85733803f33SAlex Elder 85833803f33SAlex Elder op->cls.method_name = method; 85933803f33SAlex Elder size = strlen(method); 86033803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 86133803f33SAlex Elder op->cls.method_len = size; 8625f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 86333803f33SAlex Elder payload_len += size; 86433803f33SAlex Elder 865a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 8665f562df5SAlex Elder 867de2aa102SIlya Dryomov op->indata_len = payload_len; 868fe943d50SChengguang Xu return 0; 86933803f33SAlex Elder } 87033803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 8718c042b0dSAlex Elder 872d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 873d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 874d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 875d74b50beSYan, Zheng { 876144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 877144cba14SYan, Zheng opcode, 0); 878d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 879d74b50beSYan, Zheng size_t payload_len; 880d74b50beSYan, Zheng 881d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 882d74b50beSYan, Zheng 88333165d47SIlya Dryomov pagelist = ceph_pagelist_alloc(GFP_NOFS); 884d74b50beSYan, Zheng if (!pagelist) 885d74b50beSYan, Zheng return -ENOMEM; 886d74b50beSYan, Zheng 887d74b50beSYan, Zheng payload_len = strlen(name); 888d74b50beSYan, Zheng op->xattr.name_len = payload_len; 889d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 890d74b50beSYan, Zheng 891d74b50beSYan, Zheng op->xattr.value_len = size; 892d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 893d74b50beSYan, Zheng payload_len += size; 894d74b50beSYan, Zheng 895d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 896d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 897d74b50beSYan, Zheng 898d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 899de2aa102SIlya Dryomov op->indata_len = payload_len; 900d74b50beSYan, Zheng return 0; 901d74b50beSYan, Zheng } 902d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 903d74b50beSYan, Zheng 904922dab61SIlya Dryomov /* 905922dab61SIlya Dryomov * @watch_opcode: CEPH_OSD_WATCH_OP_* 906922dab61SIlya Dryomov */ 907922dab61SIlya Dryomov static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, 908922dab61SIlya Dryomov u64 cookie, u8 watch_opcode) 90933803f33SAlex Elder { 910922dab61SIlya Dryomov struct ceph_osd_req_op *op; 91133803f33SAlex Elder 912922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); 91333803f33SAlex Elder op->watch.cookie = cookie; 914922dab61SIlya Dryomov op->watch.op = watch_opcode; 915922dab61SIlya Dryomov op->watch.gen = 0; 91633803f33SAlex Elder } 91733803f33SAlex Elder 918c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 919c647b8a8SIlya Dryomov unsigned int which, 920c647b8a8SIlya Dryomov u64 expected_object_size, 921c647b8a8SIlya Dryomov u64 expected_write_size) 922c647b8a8SIlya Dryomov { 923c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 924144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 925144cba14SYan, Zheng 0); 926c647b8a8SIlya Dryomov 927c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 928c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 929c647b8a8SIlya Dryomov 930c647b8a8SIlya Dryomov /* 931c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 932c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 933c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 934c647b8a8SIlya Dryomov */ 935c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 936c647b8a8SIlya Dryomov } 937c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 938c647b8a8SIlya Dryomov 93990af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 940ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 941ec9123c5SAlex Elder { 942ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 943ec9123c5SAlex Elder 944ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 945ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 946ec9123c5SAlex Elder if (length) 94790af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 948ec9123c5SAlex Elder length, osd_data->alignment); 949ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 950ec9123c5SAlex Elder BUG_ON(!length); 95190af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 952ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 953ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 9545359a17dSIlya Dryomov ceph_msg_data_add_bio(msg, &osd_data->bio_pos, length); 955ec9123c5SAlex Elder #endif 956b9e281c2SIlya Dryomov } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BVECS) { 957b9e281c2SIlya Dryomov ceph_msg_data_add_bvecs(msg, &osd_data->bvec_pos); 958ec9123c5SAlex Elder } else { 959ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 960ec9123c5SAlex Elder } 961ec9123c5SAlex Elder } 962ec9123c5SAlex Elder 963bb873b53SIlya Dryomov static u32 osd_req_encode_op(struct ceph_osd_op *dst, 964bb873b53SIlya Dryomov const struct ceph_osd_req_op *src) 9653d14c5d2SYehuda Sadeh { 966065a68f9SAlex Elder switch (src->op) { 967fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 968fbfab539SAlex Elder break; 9693d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 9703d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 971e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 972ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 973ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 974175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 975175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 9763d14c5d2SYehuda Sadeh dst->extent.truncate_size = 9773d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 9783d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 9793d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 9803d14c5d2SYehuda Sadeh break; 9813d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 9823d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 9833d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 984bb873b53SIlya Dryomov dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 9853d14c5d2SYehuda Sadeh break; 986a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 987a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 988922dab61SIlya Dryomov dst->watch.ver = cpu_to_le64(0); 989922dab61SIlya Dryomov dst->watch.op = src->watch.op; 990922dab61SIlya Dryomov dst->watch.gen = cpu_to_le32(src->watch.gen); 991922dab61SIlya Dryomov break; 992922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 993a40c4f10SYehuda Sadeh break; 99419079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 99519079203SIlya Dryomov dst->notify.cookie = cpu_to_le64(src->notify.cookie); 99619079203SIlya Dryomov break; 997a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 998a4ed38d7SDouglas Fuller break; 999c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 1000c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 1001c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 1002c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 1003c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 1004c647b8a8SIlya Dryomov break; 1005d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 1006d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 1007d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 1008d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 1009d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 1010d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 1011d74b50beSYan, Zheng break; 1012864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 1013864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 1014864e9197SYan, Zheng break; 101523ddf9beSLuis Henriques case CEPH_OSD_OP_COPY_FROM: 101623ddf9beSLuis Henriques dst->copy_from.snapid = cpu_to_le64(src->copy_from.snapid); 101723ddf9beSLuis Henriques dst->copy_from.src_version = 101823ddf9beSLuis Henriques cpu_to_le64(src->copy_from.src_version); 101923ddf9beSLuis Henriques dst->copy_from.flags = src->copy_from.flags; 102023ddf9beSLuis Henriques dst->copy_from.src_fadvise_flags = 102123ddf9beSLuis Henriques cpu_to_le32(src->copy_from.src_fadvise_flags); 102223ddf9beSLuis Henriques break; 10233d14c5d2SYehuda Sadeh default: 10244c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 10258f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 10264c46459cSAlex Elder WARN_ON(1); 1027a8dd0a37SAlex Elder 1028a8dd0a37SAlex Elder return 0; 10293d14c5d2SYehuda Sadeh } 10307b25bf5fSIlya Dryomov 1031a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 10327b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 1033de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 1034175face2SAlex Elder 1035bb873b53SIlya Dryomov return src->indata_len; 10363d14c5d2SYehuda Sadeh } 10373d14c5d2SYehuda Sadeh 10383d14c5d2SYehuda Sadeh /* 10393d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 10403d14c5d2SYehuda Sadeh * extent as needed. 10413d14c5d2SYehuda Sadeh * 10423d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 10433d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 10443d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 10453d14c5d2SYehuda Sadeh */ 10463d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 10473d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 10483d14c5d2SYehuda Sadeh struct ceph_vino vino, 1049715e4cd4SYan, Zheng u64 off, u64 *plen, 1050715e4cd4SYan, Zheng unsigned int which, int num_ops, 10513d14c5d2SYehuda Sadeh int opcode, int flags, 10523d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 10533d14c5d2SYehuda Sadeh u32 truncate_seq, 10543d14c5d2SYehuda Sadeh u64 truncate_size, 1055153e5167SAlex Elder bool use_mempool) 10563d14c5d2SYehuda Sadeh { 10573d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 105875d1c941SAlex Elder u64 objnum = 0; 105975d1c941SAlex Elder u64 objoff = 0; 106075d1c941SAlex Elder u64 objlen = 0; 10616816282dSSage Weil int r; 10623d14c5d2SYehuda Sadeh 1063ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 1064864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 1065864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 10663d14c5d2SYehuda Sadeh 1067acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 1068ae7ca4a3SAlex Elder GFP_NOFS); 106913d1ad16SIlya Dryomov if (!req) { 107013d1ad16SIlya Dryomov r = -ENOMEM; 107113d1ad16SIlya Dryomov goto fail; 107213d1ad16SIlya Dryomov } 107379528734SAlex Elder 10743d14c5d2SYehuda Sadeh /* calculate max write size */ 1075a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 107613d1ad16SIlya Dryomov if (r) 107713d1ad16SIlya Dryomov goto fail; 1078a19dadfbSAlex Elder 1079864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 1080144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 1081864e9197SYan, Zheng } else { 10827627151eSYan, Zheng u32 object_size = layout->object_size; 1083864e9197SYan, Zheng u32 object_base = off - objoff; 1084ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 1085d18d1e28SAlex Elder if (truncate_size <= object_base) { 1086d18d1e28SAlex Elder truncate_size = 0; 1087d18d1e28SAlex Elder } else { 1088d18d1e28SAlex Elder truncate_size -= object_base; 1089d18d1e28SAlex Elder if (truncate_size > object_size) 1090d18d1e28SAlex Elder truncate_size = object_size; 1091d18d1e28SAlex Elder } 1092ccca4e37SYan, Zheng } 1093715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 1094b0270324SAlex Elder truncate_size, truncate_seq); 1095864e9197SYan, Zheng } 1096d18d1e28SAlex Elder 1097bb873b53SIlya Dryomov req->r_flags = flags; 10987627151eSYan, Zheng req->r_base_oloc.pool = layout->pool_id; 109930c156d9SYan, Zheng req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns); 1100d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 1101dbe0fc41SAlex Elder 1102bb873b53SIlya Dryomov req->r_snapid = vino.snap; 1103bb873b53SIlya Dryomov if (flags & CEPH_OSD_FLAG_WRITE) 1104bb873b53SIlya Dryomov req->r_data_offset = off; 1105bb873b53SIlya Dryomov 11060d9c1ab3SIlya Dryomov if (num_ops > 1) 11070d9c1ab3SIlya Dryomov /* 11080d9c1ab3SIlya Dryomov * This is a special case for ceph_writepages_start(), but it 11090d9c1ab3SIlya Dryomov * also covers ceph_uninline_data(). If more multi-op request 11100d9c1ab3SIlya Dryomov * use cases emerge, we will need a separate helper. 11110d9c1ab3SIlya Dryomov */ 11120d9c1ab3SIlya Dryomov r = __ceph_osdc_alloc_messages(req, GFP_NOFS, num_ops, 0); 11130d9c1ab3SIlya Dryomov else 111413d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 111513d1ad16SIlya Dryomov if (r) 111613d1ad16SIlya Dryomov goto fail; 111713d1ad16SIlya Dryomov 11183d14c5d2SYehuda Sadeh return req; 111913d1ad16SIlya Dryomov 112013d1ad16SIlya Dryomov fail: 112113d1ad16SIlya Dryomov ceph_osdc_put_request(req); 112213d1ad16SIlya Dryomov return ERR_PTR(r); 11233d14c5d2SYehuda Sadeh } 11243d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 11253d14c5d2SYehuda Sadeh 11263d14c5d2SYehuda Sadeh /* 11273d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 11283d14c5d2SYehuda Sadeh */ 1129fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 11304609245eSIlya Dryomov DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) 11313d14c5d2SYehuda Sadeh 113266850df5SIlya Dryomov /* 113366850df5SIlya Dryomov * Call @fn on each OSD request as long as @fn returns 0. 113466850df5SIlya Dryomov */ 113566850df5SIlya Dryomov static void for_each_request(struct ceph_osd_client *osdc, 113666850df5SIlya Dryomov int (*fn)(struct ceph_osd_request *req, void *arg), 113766850df5SIlya Dryomov void *arg) 113866850df5SIlya Dryomov { 113966850df5SIlya Dryomov struct rb_node *n, *p; 114066850df5SIlya Dryomov 114166850df5SIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 114266850df5SIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 114366850df5SIlya Dryomov 114466850df5SIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 114566850df5SIlya Dryomov struct ceph_osd_request *req = 114666850df5SIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 114766850df5SIlya Dryomov 114866850df5SIlya Dryomov p = rb_next(p); 114966850df5SIlya Dryomov if (fn(req, arg)) 115066850df5SIlya Dryomov return; 115166850df5SIlya Dryomov } 115266850df5SIlya Dryomov } 115366850df5SIlya Dryomov 115466850df5SIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 115566850df5SIlya Dryomov struct ceph_osd_request *req = 115666850df5SIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 115766850df5SIlya Dryomov 115866850df5SIlya Dryomov p = rb_next(p); 115966850df5SIlya Dryomov if (fn(req, arg)) 116066850df5SIlya Dryomov return; 116166850df5SIlya Dryomov } 116266850df5SIlya Dryomov } 116366850df5SIlya Dryomov 11640247a0cfSIlya Dryomov static bool osd_homeless(struct ceph_osd *osd) 11650247a0cfSIlya Dryomov { 11660247a0cfSIlya Dryomov return osd->o_osd == CEPH_HOMELESS_OSD; 11670247a0cfSIlya Dryomov } 11680247a0cfSIlya Dryomov 11695aea3dcdSIlya Dryomov static bool osd_registered(struct ceph_osd *osd) 11703d14c5d2SYehuda Sadeh { 11715aea3dcdSIlya Dryomov verify_osdc_locked(osd->o_osdc); 11723d14c5d2SYehuda Sadeh 11735aea3dcdSIlya Dryomov return !RB_EMPTY_NODE(&osd->o_node); 11743d14c5d2SYehuda Sadeh } 11753d14c5d2SYehuda Sadeh 11763d14c5d2SYehuda Sadeh /* 11770247a0cfSIlya Dryomov * Assumes @osd is zero-initialized. 11780247a0cfSIlya Dryomov */ 11790247a0cfSIlya Dryomov static void osd_init(struct ceph_osd *osd) 11800247a0cfSIlya Dryomov { 118102113a0fSElena Reshetova refcount_set(&osd->o_ref, 1); 11820247a0cfSIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 11835aea3dcdSIlya Dryomov osd->o_requests = RB_ROOT; 1184922dab61SIlya Dryomov osd->o_linger_requests = RB_ROOT; 1185a02a946dSIlya Dryomov osd->o_backoff_mappings = RB_ROOT; 1186a02a946dSIlya Dryomov osd->o_backoffs_by_id = RB_ROOT; 11870247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_osd_lru); 11880247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_keepalive_item); 11890247a0cfSIlya Dryomov osd->o_incarnation = 1; 11905aea3dcdSIlya Dryomov mutex_init(&osd->lock); 11910247a0cfSIlya Dryomov } 11920247a0cfSIlya Dryomov 11930247a0cfSIlya Dryomov static void osd_cleanup(struct ceph_osd *osd) 11940247a0cfSIlya Dryomov { 11950247a0cfSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); 11965aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 1197922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 1198a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoff_mappings)); 1199a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_backoffs_by_id)); 12000247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_osd_lru)); 12010247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_keepalive_item)); 12020247a0cfSIlya Dryomov 12030247a0cfSIlya Dryomov if (osd->o_auth.authorizer) { 12040247a0cfSIlya Dryomov WARN_ON(osd_homeless(osd)); 12050247a0cfSIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 12060247a0cfSIlya Dryomov } 12070247a0cfSIlya Dryomov } 12080247a0cfSIlya Dryomov 12090247a0cfSIlya Dryomov /* 12103d14c5d2SYehuda Sadeh * Track open sessions with osds. 12113d14c5d2SYehuda Sadeh */ 1212e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 12133d14c5d2SYehuda Sadeh { 12143d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12153d14c5d2SYehuda Sadeh 12160247a0cfSIlya Dryomov WARN_ON(onum == CEPH_HOMELESS_OSD); 12170247a0cfSIlya Dryomov 12187a28f59bSIlya Dryomov osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); 12190247a0cfSIlya Dryomov osd_init(osd); 12203d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1221e10006f8SAlex Elder osd->o_osd = onum; 12223d14c5d2SYehuda Sadeh 1223b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 12243d14c5d2SYehuda Sadeh 12253d14c5d2SYehuda Sadeh return osd; 12263d14c5d2SYehuda Sadeh } 12273d14c5d2SYehuda Sadeh 12283d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 12293d14c5d2SYehuda Sadeh { 123002113a0fSElena Reshetova if (refcount_inc_not_zero(&osd->o_ref)) { 123102113a0fSElena Reshetova dout("get_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref)-1, 123202113a0fSElena Reshetova refcount_read(&osd->o_ref)); 12333d14c5d2SYehuda Sadeh return osd; 12343d14c5d2SYehuda Sadeh } else { 12353d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 12363d14c5d2SYehuda Sadeh return NULL; 12373d14c5d2SYehuda Sadeh } 12383d14c5d2SYehuda Sadeh } 12393d14c5d2SYehuda Sadeh 12403d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 12413d14c5d2SYehuda Sadeh { 124202113a0fSElena Reshetova dout("put_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref), 124302113a0fSElena Reshetova refcount_read(&osd->o_ref) - 1); 124402113a0fSElena Reshetova if (refcount_dec_and_test(&osd->o_ref)) { 12450247a0cfSIlya Dryomov osd_cleanup(osd); 12463d14c5d2SYehuda Sadeh kfree(osd); 12473d14c5d2SYehuda Sadeh } 12483d14c5d2SYehuda Sadeh } 12493d14c5d2SYehuda Sadeh 1250fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1251fcd00b68SIlya Dryomov 12529dd2845cSIlya Dryomov static void __move_osd_to_lru(struct ceph_osd *osd) 12533d14c5d2SYehuda Sadeh { 12549dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 12559dd2845cSIlya Dryomov 12569dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 12573d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1258bbf37ec3SIlya Dryomov 12599dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 12603d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 12619dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 12629dd2845cSIlya Dryomov 1263a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 12643d14c5d2SYehuda Sadeh } 12653d14c5d2SYehuda Sadeh 12669dd2845cSIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd *osd) 1267bbf37ec3SIlya Dryomov { 12685aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1269922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) 12709dd2845cSIlya Dryomov __move_osd_to_lru(osd); 1271bbf37ec3SIlya Dryomov } 1272bbf37ec3SIlya Dryomov 12733d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 12743d14c5d2SYehuda Sadeh { 12759dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 12769dd2845cSIlya Dryomov 12779dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 12789dd2845cSIlya Dryomov 12799dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 12803d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 12813d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 12829dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 12833d14c5d2SYehuda Sadeh } 12843d14c5d2SYehuda Sadeh 12853d14c5d2SYehuda Sadeh /* 12865aea3dcdSIlya Dryomov * Close the connection and assign any leftover requests to the 12875aea3dcdSIlya Dryomov * homeless session. 12885aea3dcdSIlya Dryomov */ 12895aea3dcdSIlya Dryomov static void close_osd(struct ceph_osd *osd) 12905aea3dcdSIlya Dryomov { 12915aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 12925aea3dcdSIlya Dryomov struct rb_node *n; 12935aea3dcdSIlya Dryomov 12945aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 12955aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 12965aea3dcdSIlya Dryomov 12975aea3dcdSIlya Dryomov ceph_con_close(&osd->o_con); 12985aea3dcdSIlya Dryomov 12995aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 13005aea3dcdSIlya Dryomov struct ceph_osd_request *req = 13015aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 13025aea3dcdSIlya Dryomov 13035aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 13045aea3dcdSIlya Dryomov 13055aea3dcdSIlya Dryomov dout(" reassigning req %p tid %llu\n", req, req->r_tid); 13065aea3dcdSIlya Dryomov unlink_request(osd, req); 13075aea3dcdSIlya Dryomov link_request(&osdc->homeless_osd, req); 13085aea3dcdSIlya Dryomov } 1309922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 1310922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1311922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 1312922dab61SIlya Dryomov 1313922dab61SIlya Dryomov n = rb_next(n); /* unlink_linger() */ 1314922dab61SIlya Dryomov 1315922dab61SIlya Dryomov dout(" reassigning lreq %p linger_id %llu\n", lreq, 1316922dab61SIlya Dryomov lreq->linger_id); 1317922dab61SIlya Dryomov unlink_linger(osd, lreq); 1318922dab61SIlya Dryomov link_linger(&osdc->homeless_osd, lreq); 1319922dab61SIlya Dryomov } 1320a02a946dSIlya Dryomov clear_backoffs(osd); 13215aea3dcdSIlya Dryomov 13225aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 13235aea3dcdSIlya Dryomov erase_osd(&osdc->osds, osd); 13245aea3dcdSIlya Dryomov put_osd(osd); 13255aea3dcdSIlya Dryomov } 13265aea3dcdSIlya Dryomov 13275aea3dcdSIlya Dryomov /* 13283d14c5d2SYehuda Sadeh * reset osd connect 13293d14c5d2SYehuda Sadeh */ 13305aea3dcdSIlya Dryomov static int reopen_osd(struct ceph_osd *osd) 13313d14c5d2SYehuda Sadeh { 1332c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 13333d14c5d2SYehuda Sadeh 13345aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 13355aea3dcdSIlya Dryomov 13365aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1337922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) { 13385aea3dcdSIlya Dryomov close_osd(osd); 1339c3acb181SAlex Elder return -ENODEV; 1340c3acb181SAlex Elder } 1341c3acb181SAlex Elder 13425aea3dcdSIlya Dryomov peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; 1343c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 13443d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 13455aea3dcdSIlya Dryomov struct rb_node *n; 1346c3acb181SAlex Elder 13473d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 13480b4af2e8SIlya Dryomov "letting msgr retry\n"); 13493d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 13505aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 13515aea3dcdSIlya Dryomov struct ceph_osd_request *req = 13525aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 13533d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 13545aea3dcdSIlya Dryomov } 1355c3acb181SAlex Elder 1356c3acb181SAlex Elder return -EAGAIN; 13573d14c5d2SYehuda Sadeh } 1358c3acb181SAlex Elder 1359c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1360c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1361c3acb181SAlex Elder osd->o_incarnation++; 1362c3acb181SAlex Elder 1363c3acb181SAlex Elder return 0; 13643d14c5d2SYehuda Sadeh } 13653d14c5d2SYehuda Sadeh 13665aea3dcdSIlya Dryomov static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, 13675aea3dcdSIlya Dryomov bool wrlocked) 13683d14c5d2SYehuda Sadeh { 13695aea3dcdSIlya Dryomov struct ceph_osd *osd; 13705aea3dcdSIlya Dryomov 13715aea3dcdSIlya Dryomov if (wrlocked) 13725aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 13735aea3dcdSIlya Dryomov else 13745aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 13755aea3dcdSIlya Dryomov 13765aea3dcdSIlya Dryomov if (o != CEPH_HOMELESS_OSD) 13775aea3dcdSIlya Dryomov osd = lookup_osd(&osdc->osds, o); 13785aea3dcdSIlya Dryomov else 13795aea3dcdSIlya Dryomov osd = &osdc->homeless_osd; 13805aea3dcdSIlya Dryomov if (!osd) { 13815aea3dcdSIlya Dryomov if (!wrlocked) 13825aea3dcdSIlya Dryomov return ERR_PTR(-EAGAIN); 13835aea3dcdSIlya Dryomov 13845aea3dcdSIlya Dryomov osd = create_osd(osdc, o); 13855aea3dcdSIlya Dryomov insert_osd(&osdc->osds, osd); 13865aea3dcdSIlya Dryomov ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, 13875aea3dcdSIlya Dryomov &osdc->osdmap->osd_addr[osd->o_osd]); 13885aea3dcdSIlya Dryomov } 13895aea3dcdSIlya Dryomov 13905aea3dcdSIlya Dryomov dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); 13915aea3dcdSIlya Dryomov return osd; 1392a40c4f10SYehuda Sadeh } 1393a40c4f10SYehuda Sadeh 13943d14c5d2SYehuda Sadeh /* 13955aea3dcdSIlya Dryomov * Create request <-> OSD session relation. 13965aea3dcdSIlya Dryomov * 13975aea3dcdSIlya Dryomov * @req has to be assigned a tid, @osd may be homeless. 13983d14c5d2SYehuda Sadeh */ 13995aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) 14003d14c5d2SYehuda Sadeh { 14015aea3dcdSIlya Dryomov verify_osd_locked(osd); 14025aea3dcdSIlya Dryomov WARN_ON(!req->r_tid || req->r_osd); 14035aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 140435f9f8a0SSage Weil req, req->r_tid); 14055aea3dcdSIlya Dryomov 14065aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 14075aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 14085aea3dcdSIlya Dryomov else 14095aea3dcdSIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 14105aea3dcdSIlya Dryomov 14115aea3dcdSIlya Dryomov get_osd(osd); 14125aea3dcdSIlya Dryomov insert_request(&osd->o_requests, req); 14135aea3dcdSIlya Dryomov req->r_osd = osd; 141435f9f8a0SSage Weil } 141535f9f8a0SSage Weil 14165aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) 14173d14c5d2SYehuda Sadeh { 14185aea3dcdSIlya Dryomov verify_osd_locked(osd); 14195aea3dcdSIlya Dryomov WARN_ON(req->r_osd != osd); 14205aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 14215aea3dcdSIlya Dryomov req, req->r_tid); 14225aea3dcdSIlya Dryomov 14235aea3dcdSIlya Dryomov req->r_osd = NULL; 14245aea3dcdSIlya Dryomov erase_request(&osd->o_requests, req); 14255aea3dcdSIlya Dryomov put_osd(osd); 14265aea3dcdSIlya Dryomov 14275aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 14285aea3dcdSIlya Dryomov maybe_move_osd_to_lru(osd); 14295aea3dcdSIlya Dryomov else 14305aea3dcdSIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 14313d14c5d2SYehuda Sadeh } 14323d14c5d2SYehuda Sadeh 143363244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 143463244fa1SIlya Dryomov { 143563244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 143663244fa1SIlya Dryomov } 143763244fa1SIlya Dryomov 143842c1b124SIlya Dryomov static bool have_pool_full(struct ceph_osd_client *osdc) 143942c1b124SIlya Dryomov { 144042c1b124SIlya Dryomov struct rb_node *n; 144142c1b124SIlya Dryomov 144242c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 144342c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 144442c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 144542c1b124SIlya Dryomov 144642c1b124SIlya Dryomov if (__pool_full(pi)) 144742c1b124SIlya Dryomov return true; 144842c1b124SIlya Dryomov } 144942c1b124SIlya Dryomov 145042c1b124SIlya Dryomov return false; 145142c1b124SIlya Dryomov } 145242c1b124SIlya Dryomov 14535aea3dcdSIlya Dryomov static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) 14545aea3dcdSIlya Dryomov { 14555aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 14565aea3dcdSIlya Dryomov 14575aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 14585aea3dcdSIlya Dryomov if (!pi) 14595aea3dcdSIlya Dryomov return false; 14605aea3dcdSIlya Dryomov 14615aea3dcdSIlya Dryomov return __pool_full(pi); 14625aea3dcdSIlya Dryomov } 14635aea3dcdSIlya Dryomov 14643d14c5d2SYehuda Sadeh /* 1465d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1466d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1467d29adb34SJosh Durgin */ 146863244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 146963244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 147063244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 147163244fa1SIlya Dryomov { 1472b7ec35b3SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 1473b7ec35b3SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 1474b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 147563244fa1SIlya Dryomov __pool_full(pi); 147663244fa1SIlya Dryomov 14776d637a54SIlya Dryomov WARN_ON(pi->id != t->target_oloc.pool); 147858eb7932SJeff Layton return ((t->flags & CEPH_OSD_FLAG_READ) && pauserd) || 147958eb7932SJeff Layton ((t->flags & CEPH_OSD_FLAG_WRITE) && pausewr) || 148058eb7932SJeff Layton (osdc->osdmap->epoch < osdc->epoch_barrier); 148163244fa1SIlya Dryomov } 148263244fa1SIlya Dryomov 148363244fa1SIlya Dryomov enum calc_target_result { 148463244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 148563244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 148663244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 148763244fa1SIlya Dryomov }; 148863244fa1SIlya Dryomov 148963244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 149063244fa1SIlya Dryomov struct ceph_osd_request_target *t, 14917de030d6SIlya Dryomov struct ceph_connection *con, 149263244fa1SIlya Dryomov bool any_change) 149363244fa1SIlya Dryomov { 149463244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 149563244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 149663244fa1SIlya Dryomov struct ceph_osds up, acting; 149763244fa1SIlya Dryomov bool force_resend = false; 149884ed45dfSIlya Dryomov bool unpaused = false; 1499a5613724SIlya Dryomov bool legacy_change = false; 15007de030d6SIlya Dryomov bool split = false; 1501b7ec35b3SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); 1502ae78dd81SIlya Dryomov bool recovery_deletes = ceph_osdmap_flag(osdc, 1503ae78dd81SIlya Dryomov CEPH_OSDMAP_RECOVERY_DELETES); 150463244fa1SIlya Dryomov enum calc_target_result ct_res; 150563244fa1SIlya Dryomov 150604c7d789SIlya Dryomov t->epoch = osdc->osdmap->epoch; 150763244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 150863244fa1SIlya Dryomov if (!pi) { 150963244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 151063244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 151163244fa1SIlya Dryomov goto out; 151263244fa1SIlya Dryomov } 151363244fa1SIlya Dryomov 151463244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 1515dc93e0e2SIlya Dryomov if (t->last_force_resend < pi->last_force_request_resend) { 1516dc93e0e2SIlya Dryomov t->last_force_resend = pi->last_force_request_resend; 151763244fa1SIlya Dryomov force_resend = true; 1518dc93e0e2SIlya Dryomov } else if (t->last_force_resend == 0) { 151963244fa1SIlya Dryomov force_resend = true; 152063244fa1SIlya Dryomov } 152163244fa1SIlya Dryomov } 152263244fa1SIlya Dryomov 1523db098ec4SIlya Dryomov /* apply tiering */ 1524db098ec4SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 1525db098ec4SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 1526db098ec4SIlya Dryomov if ((t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 152763244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) 152863244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 152963244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) 153063244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 15316d637a54SIlya Dryomov 15326d637a54SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->target_oloc.pool); 15336d637a54SIlya Dryomov if (!pi) { 15346d637a54SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 15356d637a54SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 15366d637a54SIlya Dryomov goto out; 15376d637a54SIlya Dryomov } 153863244fa1SIlya Dryomov } 153963244fa1SIlya Dryomov 1540a86f009fSIlya Dryomov __ceph_object_locator_to_pg(pi, &t->target_oid, &t->target_oloc, &pgid); 154163244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 154263244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 154363244fa1SIlya Dryomov 1544df28152dSIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, pi, &pgid, &up, &acting); 154563244fa1SIlya Dryomov if (any_change && 154663244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 154763244fa1SIlya Dryomov &acting, 154863244fa1SIlya Dryomov &t->up, 154963244fa1SIlya Dryomov &up, 155063244fa1SIlya Dryomov t->size, 155163244fa1SIlya Dryomov pi->size, 155263244fa1SIlya Dryomov t->min_size, 155363244fa1SIlya Dryomov pi->min_size, 155463244fa1SIlya Dryomov t->pg_num, 155563244fa1SIlya Dryomov pi->pg_num, 155663244fa1SIlya Dryomov t->sort_bitwise, 155763244fa1SIlya Dryomov sort_bitwise, 1558ae78dd81SIlya Dryomov t->recovery_deletes, 1559ae78dd81SIlya Dryomov recovery_deletes, 156063244fa1SIlya Dryomov &last_pgid)) 156163244fa1SIlya Dryomov force_resend = true; 156263244fa1SIlya Dryomov 156363244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 156463244fa1SIlya Dryomov t->paused = false; 156584ed45dfSIlya Dryomov unpaused = true; 156663244fa1SIlya Dryomov } 156784ed45dfSIlya Dryomov legacy_change = ceph_pg_compare(&t->pgid, &pgid) || 156884ed45dfSIlya Dryomov ceph_osds_changed(&t->acting, &acting, any_change); 15697de030d6SIlya Dryomov if (t->pg_num) 15707de030d6SIlya Dryomov split = ceph_pg_is_split(&last_pgid, t->pg_num, pi->pg_num); 157163244fa1SIlya Dryomov 15727de030d6SIlya Dryomov if (legacy_change || force_resend || split) { 157363244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 1574df28152dSIlya Dryomov ceph_pg_to_primary_shard(osdc->osdmap, pi, &pgid, &t->spgid); 157563244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 157663244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 157763244fa1SIlya Dryomov t->size = pi->size; 157863244fa1SIlya Dryomov t->min_size = pi->min_size; 157963244fa1SIlya Dryomov t->pg_num = pi->pg_num; 158063244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 158163244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 1582ae78dd81SIlya Dryomov t->recovery_deletes = recovery_deletes; 158363244fa1SIlya Dryomov 158463244fa1SIlya Dryomov t->osd = acting.primary; 158563244fa1SIlya Dryomov } 158663244fa1SIlya Dryomov 1587a5613724SIlya Dryomov if (unpaused || legacy_change || force_resend || split) 158884ed45dfSIlya Dryomov ct_res = CALC_TARGET_NEED_RESEND; 158984ed45dfSIlya Dryomov else 159084ed45dfSIlya Dryomov ct_res = CALC_TARGET_NO_ACTION; 159184ed45dfSIlya Dryomov 159263244fa1SIlya Dryomov out: 1593a5613724SIlya Dryomov dout("%s t %p -> %d%d%d%d ct_res %d osd%d\n", __func__, t, unpaused, 1594a5613724SIlya Dryomov legacy_change, force_resend, split, ct_res, t->osd); 159563244fa1SIlya Dryomov return ct_res; 159663244fa1SIlya Dryomov } 159763244fa1SIlya Dryomov 1598a02a946dSIlya Dryomov static struct ceph_spg_mapping *alloc_spg_mapping(void) 1599a02a946dSIlya Dryomov { 1600a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1601a02a946dSIlya Dryomov 1602a02a946dSIlya Dryomov spg = kmalloc(sizeof(*spg), GFP_NOIO); 1603a02a946dSIlya Dryomov if (!spg) 1604a02a946dSIlya Dryomov return NULL; 1605a02a946dSIlya Dryomov 1606a02a946dSIlya Dryomov RB_CLEAR_NODE(&spg->node); 1607a02a946dSIlya Dryomov spg->backoffs = RB_ROOT; 1608a02a946dSIlya Dryomov return spg; 1609a02a946dSIlya Dryomov } 1610a02a946dSIlya Dryomov 1611a02a946dSIlya Dryomov static void free_spg_mapping(struct ceph_spg_mapping *spg) 1612a02a946dSIlya Dryomov { 1613a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&spg->node)); 1614a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&spg->backoffs)); 1615a02a946dSIlya Dryomov 1616a02a946dSIlya Dryomov kfree(spg); 1617a02a946dSIlya Dryomov } 1618a02a946dSIlya Dryomov 1619a02a946dSIlya Dryomov /* 1620a02a946dSIlya Dryomov * rbtree of ceph_spg_mapping for handling map<spg_t, ...>, similar to 1621a02a946dSIlya Dryomov * ceph_pg_mapping. Used to track OSD backoffs -- a backoff [range] is 1622a02a946dSIlya Dryomov * defined only within a specific spgid; it does not pass anything to 1623a02a946dSIlya Dryomov * children on split, or to another primary. 1624a02a946dSIlya Dryomov */ 1625a02a946dSIlya Dryomov DEFINE_RB_FUNCS2(spg_mapping, struct ceph_spg_mapping, spgid, ceph_spg_compare, 1626a02a946dSIlya Dryomov RB_BYPTR, const struct ceph_spg *, node) 1627a02a946dSIlya Dryomov 1628a02a946dSIlya Dryomov static u64 hoid_get_bitwise_key(const struct ceph_hobject_id *hoid) 1629a02a946dSIlya Dryomov { 1630a02a946dSIlya Dryomov return hoid->is_max ? 0x100000000ull : hoid->hash_reverse_bits; 1631a02a946dSIlya Dryomov } 1632a02a946dSIlya Dryomov 1633a02a946dSIlya Dryomov static void hoid_get_effective_key(const struct ceph_hobject_id *hoid, 1634a02a946dSIlya Dryomov void **pkey, size_t *pkey_len) 1635a02a946dSIlya Dryomov { 1636a02a946dSIlya Dryomov if (hoid->key_len) { 1637a02a946dSIlya Dryomov *pkey = hoid->key; 1638a02a946dSIlya Dryomov *pkey_len = hoid->key_len; 1639a02a946dSIlya Dryomov } else { 1640a02a946dSIlya Dryomov *pkey = hoid->oid; 1641a02a946dSIlya Dryomov *pkey_len = hoid->oid_len; 1642a02a946dSIlya Dryomov } 1643a02a946dSIlya Dryomov } 1644a02a946dSIlya Dryomov 1645a02a946dSIlya Dryomov static int compare_names(const void *name1, size_t name1_len, 1646a02a946dSIlya Dryomov const void *name2, size_t name2_len) 1647a02a946dSIlya Dryomov { 1648a02a946dSIlya Dryomov int ret; 1649a02a946dSIlya Dryomov 1650a02a946dSIlya Dryomov ret = memcmp(name1, name2, min(name1_len, name2_len)); 1651a02a946dSIlya Dryomov if (!ret) { 1652a02a946dSIlya Dryomov if (name1_len < name2_len) 1653a02a946dSIlya Dryomov ret = -1; 1654a02a946dSIlya Dryomov else if (name1_len > name2_len) 1655a02a946dSIlya Dryomov ret = 1; 1656a02a946dSIlya Dryomov } 1657a02a946dSIlya Dryomov return ret; 1658a02a946dSIlya Dryomov } 1659a02a946dSIlya Dryomov 1660a02a946dSIlya Dryomov static int hoid_compare(const struct ceph_hobject_id *lhs, 1661a02a946dSIlya Dryomov const struct ceph_hobject_id *rhs) 1662a02a946dSIlya Dryomov { 1663a02a946dSIlya Dryomov void *effective_key1, *effective_key2; 1664a02a946dSIlya Dryomov size_t effective_key1_len, effective_key2_len; 1665a02a946dSIlya Dryomov int ret; 1666a02a946dSIlya Dryomov 1667a02a946dSIlya Dryomov if (lhs->is_max < rhs->is_max) 1668a02a946dSIlya Dryomov return -1; 1669a02a946dSIlya Dryomov if (lhs->is_max > rhs->is_max) 1670a02a946dSIlya Dryomov return 1; 1671a02a946dSIlya Dryomov 1672a02a946dSIlya Dryomov if (lhs->pool < rhs->pool) 1673a02a946dSIlya Dryomov return -1; 1674a02a946dSIlya Dryomov if (lhs->pool > rhs->pool) 1675a02a946dSIlya Dryomov return 1; 1676a02a946dSIlya Dryomov 1677a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) < hoid_get_bitwise_key(rhs)) 1678a02a946dSIlya Dryomov return -1; 1679a02a946dSIlya Dryomov if (hoid_get_bitwise_key(lhs) > hoid_get_bitwise_key(rhs)) 1680a02a946dSIlya Dryomov return 1; 1681a02a946dSIlya Dryomov 1682a02a946dSIlya Dryomov ret = compare_names(lhs->nspace, lhs->nspace_len, 1683a02a946dSIlya Dryomov rhs->nspace, rhs->nspace_len); 1684a02a946dSIlya Dryomov if (ret) 1685a02a946dSIlya Dryomov return ret; 1686a02a946dSIlya Dryomov 1687a02a946dSIlya Dryomov hoid_get_effective_key(lhs, &effective_key1, &effective_key1_len); 1688a02a946dSIlya Dryomov hoid_get_effective_key(rhs, &effective_key2, &effective_key2_len); 1689a02a946dSIlya Dryomov ret = compare_names(effective_key1, effective_key1_len, 1690a02a946dSIlya Dryomov effective_key2, effective_key2_len); 1691a02a946dSIlya Dryomov if (ret) 1692a02a946dSIlya Dryomov return ret; 1693a02a946dSIlya Dryomov 1694a02a946dSIlya Dryomov ret = compare_names(lhs->oid, lhs->oid_len, rhs->oid, rhs->oid_len); 1695a02a946dSIlya Dryomov if (ret) 1696a02a946dSIlya Dryomov return ret; 1697a02a946dSIlya Dryomov 1698a02a946dSIlya Dryomov if (lhs->snapid < rhs->snapid) 1699a02a946dSIlya Dryomov return -1; 1700a02a946dSIlya Dryomov if (lhs->snapid > rhs->snapid) 1701a02a946dSIlya Dryomov return 1; 1702a02a946dSIlya Dryomov 1703a02a946dSIlya Dryomov return 0; 1704a02a946dSIlya Dryomov } 1705a02a946dSIlya Dryomov 1706a02a946dSIlya Dryomov /* 1707a02a946dSIlya Dryomov * For decoding ->begin and ->end of MOSDBackoff only -- no MIN/MAX 1708a02a946dSIlya Dryomov * compat stuff here. 1709a02a946dSIlya Dryomov * 1710a02a946dSIlya Dryomov * Assumes @hoid is zero-initialized. 1711a02a946dSIlya Dryomov */ 1712a02a946dSIlya Dryomov static int decode_hoid(void **p, void *end, struct ceph_hobject_id *hoid) 1713a02a946dSIlya Dryomov { 1714a02a946dSIlya Dryomov u8 struct_v; 1715a02a946dSIlya Dryomov u32 struct_len; 1716a02a946dSIlya Dryomov int ret; 1717a02a946dSIlya Dryomov 1718a02a946dSIlya Dryomov ret = ceph_start_decoding(p, end, 4, "hobject_t", &struct_v, 1719a02a946dSIlya Dryomov &struct_len); 1720a02a946dSIlya Dryomov if (ret) 1721a02a946dSIlya Dryomov return ret; 1722a02a946dSIlya Dryomov 1723a02a946dSIlya Dryomov if (struct_v < 4) { 1724a02a946dSIlya Dryomov pr_err("got struct_v %d < 4 of hobject_t\n", struct_v); 1725a02a946dSIlya Dryomov goto e_inval; 1726a02a946dSIlya Dryomov } 1727a02a946dSIlya Dryomov 1728a02a946dSIlya Dryomov hoid->key = ceph_extract_encoded_string(p, end, &hoid->key_len, 1729a02a946dSIlya Dryomov GFP_NOIO); 1730a02a946dSIlya Dryomov if (IS_ERR(hoid->key)) { 1731a02a946dSIlya Dryomov ret = PTR_ERR(hoid->key); 1732a02a946dSIlya Dryomov hoid->key = NULL; 1733a02a946dSIlya Dryomov return ret; 1734a02a946dSIlya Dryomov } 1735a02a946dSIlya Dryomov 1736a02a946dSIlya Dryomov hoid->oid = ceph_extract_encoded_string(p, end, &hoid->oid_len, 1737a02a946dSIlya Dryomov GFP_NOIO); 1738a02a946dSIlya Dryomov if (IS_ERR(hoid->oid)) { 1739a02a946dSIlya Dryomov ret = PTR_ERR(hoid->oid); 1740a02a946dSIlya Dryomov hoid->oid = NULL; 1741a02a946dSIlya Dryomov return ret; 1742a02a946dSIlya Dryomov } 1743a02a946dSIlya Dryomov 1744a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->snapid, e_inval); 1745a02a946dSIlya Dryomov ceph_decode_32_safe(p, end, hoid->hash, e_inval); 1746a02a946dSIlya Dryomov ceph_decode_8_safe(p, end, hoid->is_max, e_inval); 1747a02a946dSIlya Dryomov 1748a02a946dSIlya Dryomov hoid->nspace = ceph_extract_encoded_string(p, end, &hoid->nspace_len, 1749a02a946dSIlya Dryomov GFP_NOIO); 1750a02a946dSIlya Dryomov if (IS_ERR(hoid->nspace)) { 1751a02a946dSIlya Dryomov ret = PTR_ERR(hoid->nspace); 1752a02a946dSIlya Dryomov hoid->nspace = NULL; 1753a02a946dSIlya Dryomov return ret; 1754a02a946dSIlya Dryomov } 1755a02a946dSIlya Dryomov 1756a02a946dSIlya Dryomov ceph_decode_64_safe(p, end, hoid->pool, e_inval); 1757a02a946dSIlya Dryomov 1758a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1759a02a946dSIlya Dryomov return 0; 1760a02a946dSIlya Dryomov 1761a02a946dSIlya Dryomov e_inval: 1762a02a946dSIlya Dryomov return -EINVAL; 1763a02a946dSIlya Dryomov } 1764a02a946dSIlya Dryomov 1765a02a946dSIlya Dryomov static int hoid_encoding_size(const struct ceph_hobject_id *hoid) 1766a02a946dSIlya Dryomov { 1767a02a946dSIlya Dryomov return 8 + 4 + 1 + 8 + /* snapid, hash, is_max, pool */ 1768a02a946dSIlya Dryomov 4 + hoid->key_len + 4 + hoid->oid_len + 4 + hoid->nspace_len; 1769a02a946dSIlya Dryomov } 1770a02a946dSIlya Dryomov 1771a02a946dSIlya Dryomov static void encode_hoid(void **p, void *end, const struct ceph_hobject_id *hoid) 1772a02a946dSIlya Dryomov { 1773a02a946dSIlya Dryomov ceph_start_encoding(p, 4, 3, hoid_encoding_size(hoid)); 1774a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->key, hoid->key_len); 1775a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->oid, hoid->oid_len); 1776a02a946dSIlya Dryomov ceph_encode_64(p, hoid->snapid); 1777a02a946dSIlya Dryomov ceph_encode_32(p, hoid->hash); 1778a02a946dSIlya Dryomov ceph_encode_8(p, hoid->is_max); 1779a02a946dSIlya Dryomov ceph_encode_string(p, end, hoid->nspace, hoid->nspace_len); 1780a02a946dSIlya Dryomov ceph_encode_64(p, hoid->pool); 1781a02a946dSIlya Dryomov } 1782a02a946dSIlya Dryomov 1783a02a946dSIlya Dryomov static void free_hoid(struct ceph_hobject_id *hoid) 1784a02a946dSIlya Dryomov { 1785a02a946dSIlya Dryomov if (hoid) { 1786a02a946dSIlya Dryomov kfree(hoid->key); 1787a02a946dSIlya Dryomov kfree(hoid->oid); 1788a02a946dSIlya Dryomov kfree(hoid->nspace); 1789a02a946dSIlya Dryomov kfree(hoid); 1790a02a946dSIlya Dryomov } 1791a02a946dSIlya Dryomov } 1792a02a946dSIlya Dryomov 1793a02a946dSIlya Dryomov static struct ceph_osd_backoff *alloc_backoff(void) 1794a02a946dSIlya Dryomov { 1795a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1796a02a946dSIlya Dryomov 1797a02a946dSIlya Dryomov backoff = kzalloc(sizeof(*backoff), GFP_NOIO); 1798a02a946dSIlya Dryomov if (!backoff) 1799a02a946dSIlya Dryomov return NULL; 1800a02a946dSIlya Dryomov 1801a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->spg_node); 1802a02a946dSIlya Dryomov RB_CLEAR_NODE(&backoff->id_node); 1803a02a946dSIlya Dryomov return backoff; 1804a02a946dSIlya Dryomov } 1805a02a946dSIlya Dryomov 1806a02a946dSIlya Dryomov static void free_backoff(struct ceph_osd_backoff *backoff) 1807a02a946dSIlya Dryomov { 1808a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->spg_node)); 1809a02a946dSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&backoff->id_node)); 1810a02a946dSIlya Dryomov 1811a02a946dSIlya Dryomov free_hoid(backoff->begin); 1812a02a946dSIlya Dryomov free_hoid(backoff->end); 1813a02a946dSIlya Dryomov kfree(backoff); 1814a02a946dSIlya Dryomov } 1815a02a946dSIlya Dryomov 1816a02a946dSIlya Dryomov /* 1817a02a946dSIlya Dryomov * Within a specific spgid, backoffs are managed by ->begin hoid. 1818a02a946dSIlya Dryomov */ 1819a02a946dSIlya Dryomov DEFINE_RB_INSDEL_FUNCS2(backoff, struct ceph_osd_backoff, begin, hoid_compare, 1820a02a946dSIlya Dryomov RB_BYVAL, spg_node); 1821a02a946dSIlya Dryomov 1822a02a946dSIlya Dryomov static struct ceph_osd_backoff *lookup_containing_backoff(struct rb_root *root, 1823a02a946dSIlya Dryomov const struct ceph_hobject_id *hoid) 1824a02a946dSIlya Dryomov { 1825a02a946dSIlya Dryomov struct rb_node *n = root->rb_node; 1826a02a946dSIlya Dryomov 1827a02a946dSIlya Dryomov while (n) { 1828a02a946dSIlya Dryomov struct ceph_osd_backoff *cur = 1829a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_backoff, spg_node); 1830a02a946dSIlya Dryomov int cmp; 1831a02a946dSIlya Dryomov 1832a02a946dSIlya Dryomov cmp = hoid_compare(hoid, cur->begin); 1833a02a946dSIlya Dryomov if (cmp < 0) { 1834a02a946dSIlya Dryomov n = n->rb_left; 1835a02a946dSIlya Dryomov } else if (cmp > 0) { 1836a02a946dSIlya Dryomov if (hoid_compare(hoid, cur->end) < 0) 1837a02a946dSIlya Dryomov return cur; 1838a02a946dSIlya Dryomov 1839a02a946dSIlya Dryomov n = n->rb_right; 1840a02a946dSIlya Dryomov } else { 1841a02a946dSIlya Dryomov return cur; 1842a02a946dSIlya Dryomov } 1843a02a946dSIlya Dryomov } 1844a02a946dSIlya Dryomov 1845a02a946dSIlya Dryomov return NULL; 1846a02a946dSIlya Dryomov } 1847a02a946dSIlya Dryomov 1848a02a946dSIlya Dryomov /* 1849a02a946dSIlya Dryomov * Each backoff has a unique id within its OSD session. 1850a02a946dSIlya Dryomov */ 1851a02a946dSIlya Dryomov DEFINE_RB_FUNCS(backoff_by_id, struct ceph_osd_backoff, id, id_node) 1852a02a946dSIlya Dryomov 1853a02a946dSIlya Dryomov static void clear_backoffs(struct ceph_osd *osd) 1854a02a946dSIlya Dryomov { 1855a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&osd->o_backoff_mappings)) { 1856a02a946dSIlya Dryomov struct ceph_spg_mapping *spg = 1857a02a946dSIlya Dryomov rb_entry(rb_first(&osd->o_backoff_mappings), 1858a02a946dSIlya Dryomov struct ceph_spg_mapping, node); 1859a02a946dSIlya Dryomov 1860a02a946dSIlya Dryomov while (!RB_EMPTY_ROOT(&spg->backoffs)) { 1861a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff = 1862a02a946dSIlya Dryomov rb_entry(rb_first(&spg->backoffs), 1863a02a946dSIlya Dryomov struct ceph_osd_backoff, spg_node); 1864a02a946dSIlya Dryomov 1865a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 1866a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 1867a02a946dSIlya Dryomov free_backoff(backoff); 1868a02a946dSIlya Dryomov } 1869a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 1870a02a946dSIlya Dryomov free_spg_mapping(spg); 1871a02a946dSIlya Dryomov } 1872a02a946dSIlya Dryomov } 1873a02a946dSIlya Dryomov 1874a02a946dSIlya Dryomov /* 1875a02a946dSIlya Dryomov * Set up a temporary, non-owning view into @t. 1876a02a946dSIlya Dryomov */ 1877a02a946dSIlya Dryomov static void hoid_fill_from_target(struct ceph_hobject_id *hoid, 1878a02a946dSIlya Dryomov const struct ceph_osd_request_target *t) 1879a02a946dSIlya Dryomov { 1880a02a946dSIlya Dryomov hoid->key = NULL; 1881a02a946dSIlya Dryomov hoid->key_len = 0; 1882a02a946dSIlya Dryomov hoid->oid = t->target_oid.name; 1883a02a946dSIlya Dryomov hoid->oid_len = t->target_oid.name_len; 1884a02a946dSIlya Dryomov hoid->snapid = CEPH_NOSNAP; 1885a02a946dSIlya Dryomov hoid->hash = t->pgid.seed; 1886a02a946dSIlya Dryomov hoid->is_max = false; 1887a02a946dSIlya Dryomov if (t->target_oloc.pool_ns) { 1888a02a946dSIlya Dryomov hoid->nspace = t->target_oloc.pool_ns->str; 1889a02a946dSIlya Dryomov hoid->nspace_len = t->target_oloc.pool_ns->len; 1890a02a946dSIlya Dryomov } else { 1891a02a946dSIlya Dryomov hoid->nspace = NULL; 1892a02a946dSIlya Dryomov hoid->nspace_len = 0; 1893a02a946dSIlya Dryomov } 1894a02a946dSIlya Dryomov hoid->pool = t->target_oloc.pool; 1895a02a946dSIlya Dryomov ceph_hoid_build_hash_cache(hoid); 1896a02a946dSIlya Dryomov } 1897a02a946dSIlya Dryomov 1898a02a946dSIlya Dryomov static bool should_plug_request(struct ceph_osd_request *req) 1899a02a946dSIlya Dryomov { 1900a02a946dSIlya Dryomov struct ceph_osd *osd = req->r_osd; 1901a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 1902a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 1903a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 1904a02a946dSIlya Dryomov 1905a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &req->r_t.spgid); 1906a02a946dSIlya Dryomov if (!spg) 1907a02a946dSIlya Dryomov return false; 1908a02a946dSIlya Dryomov 1909a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, &req->r_t); 1910a02a946dSIlya Dryomov backoff = lookup_containing_backoff(&spg->backoffs, &hoid); 1911a02a946dSIlya Dryomov if (!backoff) 1912a02a946dSIlya Dryomov return false; 1913a02a946dSIlya Dryomov 1914a02a946dSIlya Dryomov dout("%s req %p tid %llu backoff osd%d spgid %llu.%xs%d id %llu\n", 1915a02a946dSIlya Dryomov __func__, req, req->r_tid, osd->o_osd, backoff->spgid.pgid.pool, 1916a02a946dSIlya Dryomov backoff->spgid.pgid.seed, backoff->spgid.shard, backoff->id); 1917a02a946dSIlya Dryomov return true; 1918a02a946dSIlya Dryomov } 1919a02a946dSIlya Dryomov 19200d9c1ab3SIlya Dryomov /* 19210d9c1ab3SIlya Dryomov * Keep get_num_data_items() in sync with this function. 19220d9c1ab3SIlya Dryomov */ 192398c4bfe9SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req) 19243d14c5d2SYehuda Sadeh { 192598c4bfe9SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 192698c4bfe9SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 192798c4bfe9SIlya Dryomov struct ceph_osd_req_op *op; 19283d14c5d2SYehuda Sadeh 192998c4bfe9SIlya Dryomov if (req->r_request->num_data_items || req->r_reply->num_data_items) 1930bb873b53SIlya Dryomov return; 19313d14c5d2SYehuda Sadeh 193298c4bfe9SIlya Dryomov WARN_ON(request_msg->data_length || reply_msg->data_length); 193398c4bfe9SIlya Dryomov for (op = req->r_ops; op != &req->r_ops[req->r_num_ops]; op++) { 1934bb873b53SIlya Dryomov switch (op->op) { 1935bb873b53SIlya Dryomov /* request */ 1936bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 1937bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 1938bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 193998c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 194098c4bfe9SIlya Dryomov &op->extent.osd_data); 1941bb873b53SIlya Dryomov break; 1942bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 1943bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 1944bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 1945bb873b53SIlya Dryomov op->xattr.value_len); 194698c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 194798c4bfe9SIlya Dryomov &op->xattr.osd_data); 1948bb873b53SIlya Dryomov break; 1949922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 195098c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 1951922dab61SIlya Dryomov &op->notify_ack.request_data); 1952922dab61SIlya Dryomov break; 195323ddf9beSLuis Henriques case CEPH_OSD_OP_COPY_FROM: 195423ddf9beSLuis Henriques ceph_osdc_msg_data_add(request_msg, 195523ddf9beSLuis Henriques &op->copy_from.osd_data); 195623ddf9beSLuis Henriques break; 1957bb873b53SIlya Dryomov 1958bb873b53SIlya Dryomov /* reply */ 1959bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 196098c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 1961bb873b53SIlya Dryomov &op->raw_data_in); 1962bb873b53SIlya Dryomov break; 1963bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 196498c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 1965bb873b53SIlya Dryomov &op->extent.osd_data); 1966bb873b53SIlya Dryomov break; 1967a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 196898c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 1969a4ed38d7SDouglas Fuller &op->list_watchers.response_data); 1970a4ed38d7SDouglas Fuller break; 1971bb873b53SIlya Dryomov 1972bb873b53SIlya Dryomov /* both */ 1973bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 1974bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 1975bb873b53SIlya Dryomov op->cls.method_len + 1976bb873b53SIlya Dryomov op->cls.indata_len); 197798c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 197898c4bfe9SIlya Dryomov &op->cls.request_info); 1979bb873b53SIlya Dryomov /* optional, can be NONE */ 198098c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 198198c4bfe9SIlya Dryomov &op->cls.request_data); 1982bb873b53SIlya Dryomov /* optional, can be NONE */ 198398c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 1984bb873b53SIlya Dryomov &op->cls.response_data); 1985bb873b53SIlya Dryomov break; 198619079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 198798c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(request_msg, 198819079203SIlya Dryomov &op->notify.request_data); 198998c4bfe9SIlya Dryomov ceph_osdc_msg_data_add(reply_msg, 199019079203SIlya Dryomov &op->notify.response_data); 199119079203SIlya Dryomov break; 1992bb873b53SIlya Dryomov } 1993bb873b53SIlya Dryomov } 1994bb873b53SIlya Dryomov } 1995bb873b53SIlya Dryomov 19962e59ffd1SIlya Dryomov static void encode_pgid(void **p, const struct ceph_pg *pgid) 19972e59ffd1SIlya Dryomov { 19982e59ffd1SIlya Dryomov ceph_encode_8(p, 1); 19992e59ffd1SIlya Dryomov ceph_encode_64(p, pgid->pool); 20002e59ffd1SIlya Dryomov ceph_encode_32(p, pgid->seed); 20012e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 20022e59ffd1SIlya Dryomov } 20032e59ffd1SIlya Dryomov 20048cb441c0SIlya Dryomov static void encode_spgid(void **p, const struct ceph_spg *spgid) 20058cb441c0SIlya Dryomov { 20068cb441c0SIlya Dryomov ceph_start_encoding(p, 1, 1, CEPH_PGID_ENCODING_LEN + 1); 20078cb441c0SIlya Dryomov encode_pgid(p, &spgid->pgid); 20088cb441c0SIlya Dryomov ceph_encode_8(p, spgid->shard); 20098cb441c0SIlya Dryomov } 20108cb441c0SIlya Dryomov 20112e59ffd1SIlya Dryomov static void encode_oloc(void **p, void *end, 20122e59ffd1SIlya Dryomov const struct ceph_object_locator *oloc) 20132e59ffd1SIlya Dryomov { 20142e59ffd1SIlya Dryomov ceph_start_encoding(p, 5, 4, ceph_oloc_encoding_size(oloc)); 20152e59ffd1SIlya Dryomov ceph_encode_64(p, oloc->pool); 20162e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 20172e59ffd1SIlya Dryomov ceph_encode_32(p, 0); /* key len */ 20182e59ffd1SIlya Dryomov if (oloc->pool_ns) 20192e59ffd1SIlya Dryomov ceph_encode_string(p, end, oloc->pool_ns->str, 20202e59ffd1SIlya Dryomov oloc->pool_ns->len); 20212e59ffd1SIlya Dryomov else 20222e59ffd1SIlya Dryomov ceph_encode_32(p, 0); 20232e59ffd1SIlya Dryomov } 20242e59ffd1SIlya Dryomov 20258cb441c0SIlya Dryomov static void encode_request_partial(struct ceph_osd_request *req, 20268cb441c0SIlya Dryomov struct ceph_msg *msg) 2027bb873b53SIlya Dryomov { 2028bb873b53SIlya Dryomov void *p = msg->front.iov_base; 2029bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 2030bb873b53SIlya Dryomov u32 data_len = 0; 2031bb873b53SIlya Dryomov int i; 2032bb873b53SIlya Dryomov 2033bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 2034bb873b53SIlya Dryomov /* snapshots aren't writeable */ 2035bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 2036bb873b53SIlya Dryomov } else { 2037bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 2038bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 2039bb873b53SIlya Dryomov } 2040bb873b53SIlya Dryomov 204198c4bfe9SIlya Dryomov setup_request_data(req); 2042bb873b53SIlya Dryomov 20438cb441c0SIlya Dryomov encode_spgid(&p, &req->r_t.spgid); /* actual spg */ 20448cb441c0SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); /* raw hash */ 2045bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 2046bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 20478cb441c0SIlya Dryomov 20488cb441c0SIlya Dryomov /* reqid */ 20498cb441c0SIlya Dryomov ceph_start_encoding(&p, 2, 2, sizeof(struct ceph_osd_reqid)); 20508cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_osd_reqid)); 20518cb441c0SIlya Dryomov p += sizeof(struct ceph_osd_reqid); 20528cb441c0SIlya Dryomov 20538cb441c0SIlya Dryomov /* trace */ 20548cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_blkin_trace_info)); 20558cb441c0SIlya Dryomov p += sizeof(struct ceph_blkin_trace_info); 20568cb441c0SIlya Dryomov 20578cb441c0SIlya Dryomov ceph_encode_32(&p, 0); /* client_inc, always 0 */ 2058fac02ddfSArnd Bergmann ceph_encode_timespec64(p, &req->r_mtime); 2059bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 2060aa26d662SJeff Layton 20612e59ffd1SIlya Dryomov encode_oloc(&p, end, &req->r_t.target_oloc); 20622e59ffd1SIlya Dryomov ceph_encode_string(&p, end, req->r_t.target_oid.name, 20632e59ffd1SIlya Dryomov req->r_t.target_oid.name_len); 2064bb873b53SIlya Dryomov 2065bb873b53SIlya Dryomov /* ops, can imply data */ 2066bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 2067bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 2068bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 2069bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 2070bb873b53SIlya Dryomov } 2071bb873b53SIlya Dryomov 2072bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 2073bb873b53SIlya Dryomov if (req->r_snapc) { 2074bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 2075bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 2076bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 2077bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 2078bb873b53SIlya Dryomov } else { 2079bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 2080bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 2081bb873b53SIlya Dryomov } 2082bb873b53SIlya Dryomov 2083bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 2084986e8989SIlya Dryomov BUG_ON(p > end - 8); /* space for features */ 2085bb873b53SIlya Dryomov 20868cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(8); /* MOSDOp v8 */ 20878cb441c0SIlya Dryomov /* front_len is finalized in encode_request_finish() */ 2088986e8989SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 2089986e8989SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 2090bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 2091bb873b53SIlya Dryomov /* 2092bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 2093bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 2094bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 2095bb873b53SIlya Dryomov */ 2096bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 2097bb873b53SIlya Dryomov 20988cb441c0SIlya Dryomov dout("%s req %p msg %p oid %s oid_len %d\n", __func__, req, msg, 20998cb441c0SIlya Dryomov req->r_t.target_oid.name, req->r_t.target_oid.name_len); 21008cb441c0SIlya Dryomov } 21018cb441c0SIlya Dryomov 21028cb441c0SIlya Dryomov static void encode_request_finish(struct ceph_msg *msg) 21038cb441c0SIlya Dryomov { 21048cb441c0SIlya Dryomov void *p = msg->front.iov_base; 2105986e8989SIlya Dryomov void *const partial_end = p + msg->front.iov_len; 21068cb441c0SIlya Dryomov void *const end = p + msg->front_alloc_len; 21078cb441c0SIlya Dryomov 21088cb441c0SIlya Dryomov if (CEPH_HAVE_FEATURE(msg->con->peer_features, RESEND_ON_SPLIT)) { 21098cb441c0SIlya Dryomov /* luminous OSD -- encode features and be done */ 2110986e8989SIlya Dryomov p = partial_end; 21118cb441c0SIlya Dryomov ceph_encode_64(&p, msg->con->peer_features); 21128cb441c0SIlya Dryomov } else { 21138cb441c0SIlya Dryomov struct { 21148cb441c0SIlya Dryomov char spgid[CEPH_ENCODING_START_BLK_LEN + 21158cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1]; 21168cb441c0SIlya Dryomov __le32 hash; 21178cb441c0SIlya Dryomov __le32 epoch; 21188cb441c0SIlya Dryomov __le32 flags; 21198cb441c0SIlya Dryomov char reqid[CEPH_ENCODING_START_BLK_LEN + 21208cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid)]; 21218cb441c0SIlya Dryomov char trace[sizeof(struct ceph_blkin_trace_info)]; 21228cb441c0SIlya Dryomov __le32 client_inc; 21238cb441c0SIlya Dryomov struct ceph_timespec mtime; 21248cb441c0SIlya Dryomov } __packed head; 21258cb441c0SIlya Dryomov struct ceph_pg pgid; 21268cb441c0SIlya Dryomov void *oloc, *oid, *tail; 21278cb441c0SIlya Dryomov int oloc_len, oid_len, tail_len; 21288cb441c0SIlya Dryomov int len; 21298cb441c0SIlya Dryomov 21308cb441c0SIlya Dryomov /* 21318cb441c0SIlya Dryomov * Pre-luminous OSD -- reencode v8 into v4 using @head 21328cb441c0SIlya Dryomov * as a temporary buffer. Encode the raw PG; the rest 21338cb441c0SIlya Dryomov * is just a matter of moving oloc, oid and tail blobs 21348cb441c0SIlya Dryomov * around. 21358cb441c0SIlya Dryomov */ 21368cb441c0SIlya Dryomov memcpy(&head, p, sizeof(head)); 21378cb441c0SIlya Dryomov p += sizeof(head); 21388cb441c0SIlya Dryomov 21398cb441c0SIlya Dryomov oloc = p; 21408cb441c0SIlya Dryomov p += CEPH_ENCODING_START_BLK_LEN; 21418cb441c0SIlya Dryomov pgid.pool = ceph_decode_64(&p); 21428cb441c0SIlya Dryomov p += 4 + 4; /* preferred, key len */ 21438cb441c0SIlya Dryomov len = ceph_decode_32(&p); 21448cb441c0SIlya Dryomov p += len; /* nspace */ 21458cb441c0SIlya Dryomov oloc_len = p - oloc; 21468cb441c0SIlya Dryomov 21478cb441c0SIlya Dryomov oid = p; 21488cb441c0SIlya Dryomov len = ceph_decode_32(&p); 21498cb441c0SIlya Dryomov p += len; 21508cb441c0SIlya Dryomov oid_len = p - oid; 21518cb441c0SIlya Dryomov 21528cb441c0SIlya Dryomov tail = p; 2153986e8989SIlya Dryomov tail_len = partial_end - p; 21548cb441c0SIlya Dryomov 21558cb441c0SIlya Dryomov p = msg->front.iov_base; 21568cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.client_inc, sizeof(head.client_inc)); 21578cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.epoch, sizeof(head.epoch)); 21588cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.flags, sizeof(head.flags)); 21598cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.mtime, sizeof(head.mtime)); 21608cb441c0SIlya Dryomov 21618cb441c0SIlya Dryomov /* reassert_version */ 21628cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_eversion)); 21638cb441c0SIlya Dryomov p += sizeof(struct ceph_eversion); 21648cb441c0SIlya Dryomov 21658cb441c0SIlya Dryomov BUG_ON(p >= oloc); 21668cb441c0SIlya Dryomov memmove(p, oloc, oloc_len); 21678cb441c0SIlya Dryomov p += oloc_len; 21688cb441c0SIlya Dryomov 21698cb441c0SIlya Dryomov pgid.seed = le32_to_cpu(head.hash); 21708cb441c0SIlya Dryomov encode_pgid(&p, &pgid); /* raw pg */ 21718cb441c0SIlya Dryomov 21728cb441c0SIlya Dryomov BUG_ON(p >= oid); 21738cb441c0SIlya Dryomov memmove(p, oid, oid_len); 21748cb441c0SIlya Dryomov p += oid_len; 21758cb441c0SIlya Dryomov 21768cb441c0SIlya Dryomov /* tail -- ops, snapid, snapc, retry_attempt */ 21778cb441c0SIlya Dryomov BUG_ON(p >= tail); 21788cb441c0SIlya Dryomov memmove(p, tail, tail_len); 21798cb441c0SIlya Dryomov p += tail_len; 21808cb441c0SIlya Dryomov 21818cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 21828cb441c0SIlya Dryomov } 21838cb441c0SIlya Dryomov 21848cb441c0SIlya Dryomov BUG_ON(p > end); 21858cb441c0SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 21868cb441c0SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 21878cb441c0SIlya Dryomov 21888cb441c0SIlya Dryomov dout("%s msg %p tid %llu %u+%u+%u v%d\n", __func__, msg, 21898cb441c0SIlya Dryomov le64_to_cpu(msg->hdr.tid), le32_to_cpu(msg->hdr.front_len), 21908cb441c0SIlya Dryomov le32_to_cpu(msg->hdr.middle_len), le32_to_cpu(msg->hdr.data_len), 21918cb441c0SIlya Dryomov le16_to_cpu(msg->hdr.version)); 2192bb873b53SIlya Dryomov } 2193bb873b53SIlya Dryomov 2194bb873b53SIlya Dryomov /* 2195bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 2196bb873b53SIlya Dryomov */ 2197bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 2198bb873b53SIlya Dryomov { 2199bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 2200bb873b53SIlya Dryomov 22015aea3dcdSIlya Dryomov verify_osd_locked(osd); 2202bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 2203bb873b53SIlya Dryomov 2204a02a946dSIlya Dryomov /* backoff? */ 2205a02a946dSIlya Dryomov if (should_plug_request(req)) 2206a02a946dSIlya Dryomov return; 2207a02a946dSIlya Dryomov 22085aea3dcdSIlya Dryomov /* 22095aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 22105aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 22115aea3dcdSIlya Dryomov */ 22125aea3dcdSIlya Dryomov if (req->r_sent) 22135aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 22145aea3dcdSIlya Dryomov 2215bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 2216bb873b53SIlya Dryomov if (req->r_attempts) 2217bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 2218bb873b53SIlya Dryomov else 2219bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 2220bb873b53SIlya Dryomov 22218cb441c0SIlya Dryomov encode_request_partial(req, req->r_request); 2222bb873b53SIlya Dryomov 222304c7d789SIlya 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", 2224bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 2225dc98ff72SIlya Dryomov req->r_t.spgid.pgid.pool, req->r_t.spgid.pgid.seed, 222604c7d789SIlya Dryomov req->r_t.spgid.shard, osd->o_osd, req->r_t.epoch, req->r_flags, 222704c7d789SIlya Dryomov req->r_attempts); 2228bb873b53SIlya Dryomov 2229bb873b53SIlya Dryomov req->r_t.paused = false; 22303d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 2231bb873b53SIlya Dryomov req->r_attempts++; 22323d14c5d2SYehuda Sadeh 2233bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 2234bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 2235bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 22363d14c5d2SYehuda Sadeh } 22373d14c5d2SYehuda Sadeh 223842c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 223942c1b124SIlya Dryomov { 224042c1b124SIlya Dryomov bool continuous = false; 224142c1b124SIlya Dryomov 22425aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 224342c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 224442c1b124SIlya Dryomov 2245b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2246b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || 2247b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 224842c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 224942c1b124SIlya Dryomov continuous = true; 225042c1b124SIlya Dryomov } else { 225142c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 225242c1b124SIlya Dryomov } 225342c1b124SIlya Dryomov 225442c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 225542c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 225642c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 225742c1b124SIlya Dryomov } 225842c1b124SIlya Dryomov 2259a1f4020aSJeff Layton static void complete_request(struct ceph_osd_request *req, int err); 22604609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req); 22614609245eSIlya Dryomov 22625aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 22630bbfdfe8SIlya Dryomov { 22645aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 22655aea3dcdSIlya Dryomov struct ceph_osd *osd; 22664609245eSIlya Dryomov enum calc_target_result ct_res; 226766850df5SIlya Dryomov int err = 0; 22685aea3dcdSIlya Dryomov bool need_send = false; 22695aea3dcdSIlya Dryomov bool promoted = false; 22700bbfdfe8SIlya Dryomov 2271b18b9550SIlya Dryomov WARN_ON(req->r_tid); 22725aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 22735aea3dcdSIlya Dryomov 22745aea3dcdSIlya Dryomov again: 22757de030d6SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, NULL, false); 22764609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) 22774609245eSIlya Dryomov goto promote; 22784609245eSIlya Dryomov 22795aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 22805aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 22815aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 22825aea3dcdSIlya Dryomov goto promote; 22835aea3dcdSIlya Dryomov } 22845aea3dcdSIlya Dryomov 228566850df5SIlya Dryomov if (osdc->abort_err) { 228666850df5SIlya Dryomov dout("req %p abort_err %d\n", req, osdc->abort_err); 228766850df5SIlya Dryomov err = osdc->abort_err; 228866850df5SIlya Dryomov } else if (osdc->osdmap->epoch < osdc->epoch_barrier) { 228958eb7932SJeff Layton dout("req %p epoch %u barrier %u\n", req, osdc->osdmap->epoch, 229058eb7932SJeff Layton osdc->epoch_barrier); 229158eb7932SJeff Layton req->r_t.paused = true; 229258eb7932SJeff Layton maybe_request_map(osdc); 229358eb7932SJeff Layton } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 2294b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 22955aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 22965aea3dcdSIlya Dryomov req->r_t.paused = true; 22975aea3dcdSIlya Dryomov maybe_request_map(osdc); 22985aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 2299b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 23005aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 23015aea3dcdSIlya Dryomov req->r_t.paused = true; 23025aea3dcdSIlya Dryomov maybe_request_map(osdc); 23035aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 23045aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 23055aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 2306b7ec35b3SIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 23075aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 23085aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 230902b2f549SDongsheng Yang if (ceph_test_opt(osdc->client, ABORT_ON_FULL)) { 231029e87820SIlya Dryomov err = -ENOSPC; 231129e87820SIlya Dryomov } else { 23125aea3dcdSIlya Dryomov pr_warn_ratelimited("FULL or reached pool quota\n"); 23135aea3dcdSIlya Dryomov req->r_t.paused = true; 23145aea3dcdSIlya Dryomov maybe_request_map(osdc); 231529e87820SIlya Dryomov } 23165aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 23175aea3dcdSIlya Dryomov need_send = true; 23180bbfdfe8SIlya Dryomov } else { 23195aea3dcdSIlya Dryomov maybe_request_map(osdc); 23200bbfdfe8SIlya Dryomov } 23210bbfdfe8SIlya Dryomov 23225aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 23235aea3dcdSIlya Dryomov /* 23245aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 23255aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 23265aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 23275aea3dcdSIlya Dryomov */ 23285aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 23295aea3dcdSIlya Dryomov link_request(osd, req); 23305aea3dcdSIlya Dryomov if (need_send) 23315aea3dcdSIlya Dryomov send_request(req); 233266850df5SIlya Dryomov else if (err) 233366850df5SIlya Dryomov complete_request(req, err); 23345aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 23355aea3dcdSIlya Dryomov 23366001567cSIlya Dryomov if (!err && ct_res == CALC_TARGET_POOL_DNE) 23374609245eSIlya Dryomov send_map_check(req); 23384609245eSIlya Dryomov 23395aea3dcdSIlya Dryomov if (promoted) 23405aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 23415aea3dcdSIlya Dryomov return; 23425aea3dcdSIlya Dryomov 23435aea3dcdSIlya Dryomov promote: 23445aea3dcdSIlya Dryomov up_read(&osdc->lock); 23455aea3dcdSIlya Dryomov down_write(&osdc->lock); 23465aea3dcdSIlya Dryomov wrlocked = true; 23475aea3dcdSIlya Dryomov promoted = true; 23485aea3dcdSIlya Dryomov goto again; 23490bbfdfe8SIlya Dryomov } 23500bbfdfe8SIlya Dryomov 23515aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 23525aea3dcdSIlya Dryomov { 235354ea0046SIlya Dryomov WARN_ON(req->r_flags & (CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK)); 2354b18b9550SIlya Dryomov WARN_ON(!(req->r_flags & (CEPH_OSD_FLAG_READ | CEPH_OSD_FLAG_WRITE))); 23555aea3dcdSIlya Dryomov 2356b18b9550SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ONDISK; 23575aea3dcdSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 23587cc5e38fSIlya Dryomov 23597cc5e38fSIlya Dryomov req->r_start_stamp = jiffies; 23605aea3dcdSIlya Dryomov } 23615aea3dcdSIlya Dryomov 23625aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 23635aea3dcdSIlya Dryomov { 23645aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 23655aea3dcdSIlya Dryomov account_request(req); 23665aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 23675aea3dcdSIlya Dryomov } 23685aea3dcdSIlya Dryomov 236945ee2c1dSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 23705aea3dcdSIlya Dryomov { 23715aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 23725aea3dcdSIlya Dryomov 23734609245eSIlya Dryomov WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); 237404c7d789SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 237504c7d789SIlya Dryomov 237604c7d789SIlya Dryomov if (req->r_osd) 237704c7d789SIlya Dryomov unlink_request(req->r_osd, req); 23785aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 23795aea3dcdSIlya Dryomov 23805aea3dcdSIlya Dryomov /* 23815aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 23825aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 23835aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 23845aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 23855aea3dcdSIlya Dryomov */ 23865aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 23875aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 23885aea3dcdSIlya Dryomov } 23895aea3dcdSIlya Dryomov 2390fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 2391fe5da05eSIlya Dryomov { 2392d75f773cSSakari Ailus dout("%s req %p tid %llu cb %ps result %d\n", __func__, req, 2393b18b9550SIlya Dryomov req->r_tid, req->r_callback, req->r_result); 239426df726bSIlya Dryomov 239526df726bSIlya Dryomov if (req->r_callback) 2396fe5da05eSIlya Dryomov req->r_callback(req); 239726df726bSIlya Dryomov complete_all(&req->r_completion); 239826df726bSIlya Dryomov ceph_osdc_put_request(req); 2399b18b9550SIlya Dryomov } 2400fe5da05eSIlya Dryomov 240188bc1922SIlya Dryomov static void complete_request_workfn(struct work_struct *work) 240288bc1922SIlya Dryomov { 240388bc1922SIlya Dryomov struct ceph_osd_request *req = 240488bc1922SIlya Dryomov container_of(work, struct ceph_osd_request, r_complete_work); 240588bc1922SIlya Dryomov 240688bc1922SIlya Dryomov __complete_request(req); 24070bbfdfe8SIlya Dryomov } 24080bbfdfe8SIlya Dryomov 24094609245eSIlya Dryomov /* 2410b18b9550SIlya Dryomov * This is open-coded in handle_reply(). 24114609245eSIlya Dryomov */ 24124609245eSIlya Dryomov static void complete_request(struct ceph_osd_request *req, int err) 24134609245eSIlya Dryomov { 24144609245eSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 24154609245eSIlya Dryomov 24164609245eSIlya Dryomov req->r_result = err; 241745ee2c1dSIlya Dryomov finish_request(req); 241888bc1922SIlya Dryomov 241988bc1922SIlya Dryomov INIT_WORK(&req->r_complete_work, complete_request_workfn); 242088bc1922SIlya Dryomov queue_work(req->r_osdc->completion_wq, &req->r_complete_work); 24214609245eSIlya Dryomov } 24224609245eSIlya Dryomov 24234609245eSIlya Dryomov static void cancel_map_check(struct ceph_osd_request *req) 24244609245eSIlya Dryomov { 24254609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 24264609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 24274609245eSIlya Dryomov 24284609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 24294609245eSIlya Dryomov 24304609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 24314609245eSIlya Dryomov if (!lookup_req) 24324609245eSIlya Dryomov return; 24334609245eSIlya Dryomov 24344609245eSIlya Dryomov WARN_ON(lookup_req != req); 24354609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 24364609245eSIlya Dryomov ceph_osdc_put_request(req); 24374609245eSIlya Dryomov } 24384609245eSIlya Dryomov 24395aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 24405aea3dcdSIlya Dryomov { 24415aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 24425aea3dcdSIlya Dryomov 24434609245eSIlya Dryomov cancel_map_check(req); 244445ee2c1dSIlya Dryomov finish_request(req); 2445b18b9550SIlya Dryomov complete_all(&req->r_completion); 2446c297eb42SIlya Dryomov ceph_osdc_put_request(req); 24475aea3dcdSIlya Dryomov } 24485aea3dcdSIlya Dryomov 24497cc5e38fSIlya Dryomov static void abort_request(struct ceph_osd_request *req, int err) 24507cc5e38fSIlya Dryomov { 24517cc5e38fSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 24527cc5e38fSIlya Dryomov 24537cc5e38fSIlya Dryomov cancel_map_check(req); 24547cc5e38fSIlya Dryomov complete_request(req, err); 24557cc5e38fSIlya Dryomov } 24567cc5e38fSIlya Dryomov 245766850df5SIlya Dryomov static int abort_fn(struct ceph_osd_request *req, void *arg) 245866850df5SIlya Dryomov { 245966850df5SIlya Dryomov int err = *(int *)arg; 246066850df5SIlya Dryomov 246166850df5SIlya Dryomov abort_request(req, err); 246266850df5SIlya Dryomov return 0; /* continue iteration */ 246366850df5SIlya Dryomov } 246466850df5SIlya Dryomov 246566850df5SIlya Dryomov /* 246666850df5SIlya Dryomov * Abort all in-flight requests with @err and arrange for all future 246766850df5SIlya Dryomov * requests to be failed immediately. 246866850df5SIlya Dryomov */ 246966850df5SIlya Dryomov void ceph_osdc_abort_requests(struct ceph_osd_client *osdc, int err) 247066850df5SIlya Dryomov { 247166850df5SIlya Dryomov dout("%s osdc %p err %d\n", __func__, osdc, err); 247266850df5SIlya Dryomov down_write(&osdc->lock); 247366850df5SIlya Dryomov for_each_request(osdc, abort_fn, &err); 247466850df5SIlya Dryomov osdc->abort_err = err; 247566850df5SIlya Dryomov up_write(&osdc->lock); 247666850df5SIlya Dryomov } 247766850df5SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_abort_requests); 247866850df5SIlya Dryomov 24792cef0ba8SYan, Zheng void ceph_osdc_clear_abort_err(struct ceph_osd_client *osdc) 24802cef0ba8SYan, Zheng { 24812cef0ba8SYan, Zheng down_write(&osdc->lock); 24822cef0ba8SYan, Zheng osdc->abort_err = 0; 24832cef0ba8SYan, Zheng up_write(&osdc->lock); 24842cef0ba8SYan, Zheng } 24852cef0ba8SYan, Zheng EXPORT_SYMBOL(ceph_osdc_clear_abort_err); 24862cef0ba8SYan, Zheng 248758eb7932SJeff Layton static void update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 248858eb7932SJeff Layton { 248958eb7932SJeff Layton if (likely(eb > osdc->epoch_barrier)) { 249058eb7932SJeff Layton dout("updating epoch_barrier from %u to %u\n", 249158eb7932SJeff Layton osdc->epoch_barrier, eb); 249258eb7932SJeff Layton osdc->epoch_barrier = eb; 249358eb7932SJeff Layton /* Request map if we're not to the barrier yet */ 249458eb7932SJeff Layton if (eb > osdc->osdmap->epoch) 249558eb7932SJeff Layton maybe_request_map(osdc); 249658eb7932SJeff Layton } 249758eb7932SJeff Layton } 249858eb7932SJeff Layton 249958eb7932SJeff Layton void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 250058eb7932SJeff Layton { 250158eb7932SJeff Layton down_read(&osdc->lock); 250258eb7932SJeff Layton if (unlikely(eb > osdc->epoch_barrier)) { 250358eb7932SJeff Layton up_read(&osdc->lock); 250458eb7932SJeff Layton down_write(&osdc->lock); 250558eb7932SJeff Layton update_epoch_barrier(osdc, eb); 250658eb7932SJeff Layton up_write(&osdc->lock); 250758eb7932SJeff Layton } else { 250858eb7932SJeff Layton up_read(&osdc->lock); 250958eb7932SJeff Layton } 251058eb7932SJeff Layton } 251158eb7932SJeff Layton EXPORT_SYMBOL(ceph_osdc_update_epoch_barrier); 251258eb7932SJeff Layton 2513fc36d0a4SJeff Layton /* 25144eea0fefSIlya Dryomov * We can end up releasing caps as a result of abort_request(). 25154eea0fefSIlya Dryomov * In that case, we probably want to ensure that the cap release message 25164eea0fefSIlya Dryomov * has an updated epoch barrier in it, so set the epoch barrier prior to 25174eea0fefSIlya Dryomov * aborting the first request. 25184eea0fefSIlya Dryomov */ 25194eea0fefSIlya Dryomov static int abort_on_full_fn(struct ceph_osd_request *req, void *arg) 25204eea0fefSIlya Dryomov { 25214eea0fefSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 25224eea0fefSIlya Dryomov bool *victims = arg; 25234eea0fefSIlya Dryomov 2524c843d13cSIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 25254eea0fefSIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2526690f951dSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 25274eea0fefSIlya Dryomov if (!*victims) { 25284eea0fefSIlya Dryomov update_epoch_barrier(osdc, osdc->osdmap->epoch); 25294eea0fefSIlya Dryomov *victims = true; 25304eea0fefSIlya Dryomov } 25314eea0fefSIlya Dryomov abort_request(req, -ENOSPC); 25324eea0fefSIlya Dryomov } 25334eea0fefSIlya Dryomov 25344eea0fefSIlya Dryomov return 0; /* continue iteration */ 25354eea0fefSIlya Dryomov } 25364eea0fefSIlya Dryomov 25374eea0fefSIlya Dryomov /* 2538fc36d0a4SJeff Layton * Drop all pending requests that are stalled waiting on a full condition to 253958eb7932SJeff Layton * clear, and complete them with ENOSPC as the return code. Set the 254058eb7932SJeff Layton * osdc->epoch_barrier to the latest map epoch that we've seen if any were 254158eb7932SJeff Layton * cancelled. 2542fc36d0a4SJeff Layton */ 2543fc36d0a4SJeff Layton static void ceph_osdc_abort_on_full(struct ceph_osd_client *osdc) 2544fc36d0a4SJeff Layton { 254558eb7932SJeff Layton bool victims = false; 2546fc36d0a4SJeff Layton 254702b2f549SDongsheng Yang if (ceph_test_opt(osdc->client, ABORT_ON_FULL) && 2548c843d13cSIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || have_pool_full(osdc))) 25494eea0fefSIlya Dryomov for_each_request(osdc, abort_on_full_fn, &victims); 2550fc36d0a4SJeff Layton } 2551fc36d0a4SJeff Layton 25524609245eSIlya Dryomov static void check_pool_dne(struct ceph_osd_request *req) 25534609245eSIlya Dryomov { 25544609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 25554609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 25564609245eSIlya Dryomov 25574609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 25584609245eSIlya Dryomov WARN_ON(!map->epoch); 25594609245eSIlya Dryomov 25604609245eSIlya Dryomov if (req->r_attempts) { 25614609245eSIlya Dryomov /* 25624609245eSIlya Dryomov * We sent a request earlier, which means that 25634609245eSIlya Dryomov * previously the pool existed, and now it does not 25644609245eSIlya Dryomov * (i.e., it was deleted). 25654609245eSIlya Dryomov */ 25664609245eSIlya Dryomov req->r_map_dne_bound = map->epoch; 25674609245eSIlya Dryomov dout("%s req %p tid %llu pool disappeared\n", __func__, req, 25684609245eSIlya Dryomov req->r_tid); 25694609245eSIlya Dryomov } else { 25704609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, 25714609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, map->epoch); 25724609245eSIlya Dryomov } 25734609245eSIlya Dryomov 25744609245eSIlya Dryomov if (req->r_map_dne_bound) { 25754609245eSIlya Dryomov if (map->epoch >= req->r_map_dne_bound) { 25764609245eSIlya Dryomov /* we had a new enough map */ 25774609245eSIlya Dryomov pr_info_ratelimited("tid %llu pool does not exist\n", 25784609245eSIlya Dryomov req->r_tid); 25794609245eSIlya Dryomov complete_request(req, -ENOENT); 25804609245eSIlya Dryomov } 25814609245eSIlya Dryomov } else { 25824609245eSIlya Dryomov send_map_check(req); 25834609245eSIlya Dryomov } 25844609245eSIlya Dryomov } 25854609245eSIlya Dryomov 25864609245eSIlya Dryomov static void map_check_cb(struct ceph_mon_generic_request *greq) 25874609245eSIlya Dryomov { 25884609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 25894609245eSIlya Dryomov struct ceph_osd_request *req; 25904609245eSIlya Dryomov u64 tid = greq->private_data; 25914609245eSIlya Dryomov 25924609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 25934609245eSIlya Dryomov 25944609245eSIlya Dryomov down_write(&osdc->lock); 25954609245eSIlya Dryomov req = lookup_request_mc(&osdc->map_checks, tid); 25964609245eSIlya Dryomov if (!req) { 25974609245eSIlya Dryomov dout("%s tid %llu dne\n", __func__, tid); 25984609245eSIlya Dryomov goto out_unlock; 25994609245eSIlya Dryomov } 26004609245eSIlya Dryomov 26014609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, 26024609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, greq->u.newest); 26034609245eSIlya Dryomov if (!req->r_map_dne_bound) 26044609245eSIlya Dryomov req->r_map_dne_bound = greq->u.newest; 26054609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 26064609245eSIlya Dryomov check_pool_dne(req); 26074609245eSIlya Dryomov 26084609245eSIlya Dryomov ceph_osdc_put_request(req); 26094609245eSIlya Dryomov out_unlock: 26104609245eSIlya Dryomov up_write(&osdc->lock); 26114609245eSIlya Dryomov } 26124609245eSIlya Dryomov 26134609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req) 26144609245eSIlya Dryomov { 26154609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 26164609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 26174609245eSIlya Dryomov int ret; 26184609245eSIlya Dryomov 26194609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 26204609245eSIlya Dryomov 26214609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 26224609245eSIlya Dryomov if (lookup_req) { 26234609245eSIlya Dryomov WARN_ON(lookup_req != req); 26244609245eSIlya Dryomov return; 26254609245eSIlya Dryomov } 26264609245eSIlya Dryomov 26274609245eSIlya Dryomov ceph_osdc_get_request(req); 26284609245eSIlya Dryomov insert_request_mc(&osdc->map_checks, req); 26294609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 26304609245eSIlya Dryomov map_check_cb, req->r_tid); 26314609245eSIlya Dryomov WARN_ON(ret); 26324609245eSIlya Dryomov } 26334609245eSIlya Dryomov 26340bbfdfe8SIlya Dryomov /* 2635922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 2636922dab61SIlya Dryomov */ 2637922dab61SIlya Dryomov static void linger_release(struct kref *kref) 2638922dab61SIlya Dryomov { 2639922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2640922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 2641922dab61SIlya Dryomov 2642922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 2643922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 2644922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 2645922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 26464609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); 2647922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 2648b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lreq->pending_lworks)); 2649922dab61SIlya Dryomov WARN_ON(lreq->osd); 2650922dab61SIlya Dryomov 2651922dab61SIlya Dryomov if (lreq->reg_req) 2652922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 2653922dab61SIlya Dryomov if (lreq->ping_req) 2654922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 2655922dab61SIlya Dryomov target_destroy(&lreq->t); 2656922dab61SIlya Dryomov kfree(lreq); 2657922dab61SIlya Dryomov } 2658922dab61SIlya Dryomov 2659922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 2660922dab61SIlya Dryomov { 2661922dab61SIlya Dryomov if (lreq) 2662922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 2663922dab61SIlya Dryomov } 2664922dab61SIlya Dryomov 2665922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2666922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 2667922dab61SIlya Dryomov { 2668922dab61SIlya Dryomov kref_get(&lreq->kref); 2669922dab61SIlya Dryomov return lreq; 2670922dab61SIlya Dryomov } 2671922dab61SIlya Dryomov 2672922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2673922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 2674922dab61SIlya Dryomov { 2675922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2676922dab61SIlya Dryomov 2677922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 2678922dab61SIlya Dryomov if (!lreq) 2679922dab61SIlya Dryomov return NULL; 2680922dab61SIlya Dryomov 2681922dab61SIlya Dryomov kref_init(&lreq->kref); 2682922dab61SIlya Dryomov mutex_init(&lreq->lock); 2683922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 2684922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 26854609245eSIlya Dryomov RB_CLEAR_NODE(&lreq->mc_node); 2686922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 2687b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lreq->pending_lworks); 2688922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 268919079203SIlya Dryomov init_completion(&lreq->notify_finish_wait); 2690922dab61SIlya Dryomov 2691922dab61SIlya Dryomov lreq->osdc = osdc; 2692922dab61SIlya Dryomov target_init(&lreq->t); 2693922dab61SIlya Dryomov 2694922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 2695922dab61SIlya Dryomov return lreq; 2696922dab61SIlya Dryomov } 2697922dab61SIlya Dryomov 2698922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 2699922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 27004609245eSIlya Dryomov DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) 2701922dab61SIlya Dryomov 2702922dab61SIlya Dryomov /* 2703922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 2704922dab61SIlya Dryomov * 2705922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 2706922dab61SIlya Dryomov */ 2707922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 2708922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2709922dab61SIlya Dryomov { 2710922dab61SIlya Dryomov verify_osd_locked(osd); 2711922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 2712922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2713922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2714922dab61SIlya Dryomov 2715922dab61SIlya Dryomov if (!osd_homeless(osd)) 2716922dab61SIlya Dryomov __remove_osd_from_lru(osd); 2717922dab61SIlya Dryomov else 2718922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 2719922dab61SIlya Dryomov 2720922dab61SIlya Dryomov get_osd(osd); 2721922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 2722922dab61SIlya Dryomov lreq->osd = osd; 2723922dab61SIlya Dryomov } 2724922dab61SIlya Dryomov 2725922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 2726922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2727922dab61SIlya Dryomov { 2728922dab61SIlya Dryomov verify_osd_locked(osd); 2729922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 2730922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2731922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2732922dab61SIlya Dryomov 2733922dab61SIlya Dryomov lreq->osd = NULL; 2734922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 2735922dab61SIlya Dryomov put_osd(osd); 2736922dab61SIlya Dryomov 2737922dab61SIlya Dryomov if (!osd_homeless(osd)) 2738922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 2739922dab61SIlya Dryomov else 2740922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 2741922dab61SIlya Dryomov } 2742922dab61SIlya Dryomov 2743922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 2744922dab61SIlya Dryomov { 2745922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 2746922dab61SIlya Dryomov 2747922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 2748922dab61SIlya Dryomov } 2749922dab61SIlya Dryomov 2750922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 2751922dab61SIlya Dryomov { 2752922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2753922dab61SIlya Dryomov bool registered; 2754922dab61SIlya Dryomov 2755922dab61SIlya Dryomov down_read(&osdc->lock); 2756922dab61SIlya Dryomov registered = __linger_registered(lreq); 2757922dab61SIlya Dryomov up_read(&osdc->lock); 2758922dab61SIlya Dryomov 2759922dab61SIlya Dryomov return registered; 2760922dab61SIlya Dryomov } 2761922dab61SIlya Dryomov 2762922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 2763922dab61SIlya Dryomov { 2764922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2765922dab61SIlya Dryomov 2766922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2767922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 2768922dab61SIlya Dryomov 2769922dab61SIlya Dryomov linger_get(lreq); 2770922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 2771922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 2772922dab61SIlya Dryomov } 2773922dab61SIlya Dryomov 2774922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 2775922dab61SIlya Dryomov { 2776922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2777922dab61SIlya Dryomov 2778922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2779922dab61SIlya Dryomov 2780922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 2781922dab61SIlya Dryomov linger_put(lreq); 2782922dab61SIlya Dryomov } 2783922dab61SIlya Dryomov 2784922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 2785922dab61SIlya Dryomov { 2786922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2787922dab61SIlya Dryomov 2788922dab61SIlya Dryomov WARN_ON(!req->r_linger); 2789922dab61SIlya Dryomov cancel_request(req); 2790922dab61SIlya Dryomov linger_put(lreq); 2791922dab61SIlya Dryomov } 2792922dab61SIlya Dryomov 2793922dab61SIlya Dryomov struct linger_work { 2794922dab61SIlya Dryomov struct work_struct work; 2795922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2796b07d3c4bSIlya Dryomov struct list_head pending_item; 2797b07d3c4bSIlya Dryomov unsigned long queued_stamp; 2798922dab61SIlya Dryomov 2799922dab61SIlya Dryomov union { 2800922dab61SIlya Dryomov struct { 2801922dab61SIlya Dryomov u64 notify_id; 2802922dab61SIlya Dryomov u64 notifier_id; 2803922dab61SIlya Dryomov void *payload; /* points into @msg front */ 2804922dab61SIlya Dryomov size_t payload_len; 2805922dab61SIlya Dryomov 2806922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 2807922dab61SIlya Dryomov } notify; 2808922dab61SIlya Dryomov struct { 2809922dab61SIlya Dryomov int err; 2810922dab61SIlya Dryomov } error; 2811922dab61SIlya Dryomov }; 2812922dab61SIlya Dryomov }; 2813922dab61SIlya Dryomov 2814922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 2815922dab61SIlya Dryomov work_func_t workfn) 2816922dab61SIlya Dryomov { 2817922dab61SIlya Dryomov struct linger_work *lwork; 2818922dab61SIlya Dryomov 2819922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 2820922dab61SIlya Dryomov if (!lwork) 2821922dab61SIlya Dryomov return NULL; 2822922dab61SIlya Dryomov 2823922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 2824b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lwork->pending_item); 2825922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 2826922dab61SIlya Dryomov 2827922dab61SIlya Dryomov return lwork; 2828922dab61SIlya Dryomov } 2829922dab61SIlya Dryomov 2830922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 2831922dab61SIlya Dryomov { 2832922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2833922dab61SIlya Dryomov 2834b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 2835b07d3c4bSIlya Dryomov list_del(&lwork->pending_item); 2836b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 2837b07d3c4bSIlya Dryomov 2838922dab61SIlya Dryomov linger_put(lreq); 2839922dab61SIlya Dryomov kfree(lwork); 2840922dab61SIlya Dryomov } 2841922dab61SIlya Dryomov 2842922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 2843922dab61SIlya Dryomov { 2844922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2845922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2846922dab61SIlya Dryomov 2847922dab61SIlya Dryomov verify_lreq_locked(lreq); 2848b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lwork->pending_item)); 2849b07d3c4bSIlya Dryomov 2850b07d3c4bSIlya Dryomov lwork->queued_stamp = jiffies; 2851b07d3c4bSIlya Dryomov list_add_tail(&lwork->pending_item, &lreq->pending_lworks); 2852922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 2853922dab61SIlya Dryomov } 2854922dab61SIlya Dryomov 2855922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 2856922dab61SIlya Dryomov { 2857922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2858922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2859922dab61SIlya Dryomov 2860922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2861922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2862922dab61SIlya Dryomov goto out; 2863922dab61SIlya Dryomov } 2864922dab61SIlya Dryomov 286519079203SIlya Dryomov WARN_ON(!lreq->is_watch); 2866922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 2867922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 2868922dab61SIlya Dryomov lwork->notify.payload_len); 2869922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 2870922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 2871922dab61SIlya Dryomov lwork->notify.payload_len); 2872922dab61SIlya Dryomov 2873922dab61SIlya Dryomov out: 2874922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 2875922dab61SIlya Dryomov lwork_free(lwork); 2876922dab61SIlya Dryomov } 2877922dab61SIlya Dryomov 2878922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 2879922dab61SIlya Dryomov { 2880922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2881922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2882922dab61SIlya Dryomov 2883922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2884922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2885922dab61SIlya Dryomov goto out; 2886922dab61SIlya Dryomov } 2887922dab61SIlya Dryomov 2888922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 2889922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 2890922dab61SIlya Dryomov 2891922dab61SIlya Dryomov out: 2892922dab61SIlya Dryomov lwork_free(lwork); 2893922dab61SIlya Dryomov } 2894922dab61SIlya Dryomov 2895922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 2896922dab61SIlya Dryomov { 2897922dab61SIlya Dryomov struct linger_work *lwork; 2898922dab61SIlya Dryomov 2899922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 2900922dab61SIlya Dryomov if (!lwork) { 2901922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 2902922dab61SIlya Dryomov return; 2903922dab61SIlya Dryomov } 2904922dab61SIlya Dryomov 2905922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 2906922dab61SIlya Dryomov lwork_queue(lwork); 2907922dab61SIlya Dryomov } 2908922dab61SIlya Dryomov 2909922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 2910922dab61SIlya Dryomov int result) 2911922dab61SIlya Dryomov { 2912922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 2913922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 2914922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 2915922dab61SIlya Dryomov } 2916922dab61SIlya Dryomov } 2917922dab61SIlya Dryomov 2918922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 2919922dab61SIlya Dryomov { 2920922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2921922dab61SIlya Dryomov 2922922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2923922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 2924922dab61SIlya Dryomov lreq->linger_id, req->r_result); 2925922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 2926922dab61SIlya Dryomov lreq->committed = true; 2927922dab61SIlya Dryomov 292819079203SIlya Dryomov if (!lreq->is_watch) { 292919079203SIlya Dryomov struct ceph_osd_data *osd_data = 293019079203SIlya Dryomov osd_req_op_data(req, 0, notify, response_data); 293119079203SIlya Dryomov void *p = page_address(osd_data->pages[0]); 293219079203SIlya Dryomov 293319079203SIlya Dryomov WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || 293419079203SIlya Dryomov osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); 293519079203SIlya Dryomov 293619079203SIlya Dryomov /* make note of the notify_id */ 293719079203SIlya Dryomov if (req->r_ops[0].outdata_len >= sizeof(u64)) { 293819079203SIlya Dryomov lreq->notify_id = ceph_decode_64(&p); 293919079203SIlya Dryomov dout("lreq %p notify_id %llu\n", lreq, 294019079203SIlya Dryomov lreq->notify_id); 294119079203SIlya Dryomov } else { 294219079203SIlya Dryomov dout("lreq %p no notify_id\n", lreq); 294319079203SIlya Dryomov } 294419079203SIlya Dryomov } 294519079203SIlya Dryomov 2946922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2947922dab61SIlya Dryomov linger_put(lreq); 2948922dab61SIlya Dryomov } 2949922dab61SIlya Dryomov 2950922dab61SIlya Dryomov static int normalize_watch_error(int err) 2951922dab61SIlya Dryomov { 2952922dab61SIlya Dryomov /* 2953922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 2954922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 2955922dab61SIlya Dryomov * the delete appear the same to the user. 2956922dab61SIlya Dryomov */ 2957922dab61SIlya Dryomov if (err == -ENOENT) 2958922dab61SIlya Dryomov err = -ENOTCONN; 2959922dab61SIlya Dryomov 2960922dab61SIlya Dryomov return err; 2961922dab61SIlya Dryomov } 2962922dab61SIlya Dryomov 2963922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 2964922dab61SIlya Dryomov { 2965922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2966922dab61SIlya Dryomov 2967922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2968922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 2969922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 2970922dab61SIlya Dryomov if (req->r_result < 0) { 2971922dab61SIlya Dryomov if (!lreq->last_error) { 2972922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2973922dab61SIlya Dryomov queue_watch_error(lreq); 2974922dab61SIlya Dryomov } 2975922dab61SIlya Dryomov } 2976922dab61SIlya Dryomov 2977922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2978922dab61SIlya Dryomov linger_put(lreq); 2979922dab61SIlya Dryomov } 2980922dab61SIlya Dryomov 2981922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 2982922dab61SIlya Dryomov { 2983922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->reg_req; 2984922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2985922dab61SIlya Dryomov 2986922dab61SIlya Dryomov verify_osdc_wrlocked(req->r_osdc); 2987922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2988922dab61SIlya Dryomov 2989922dab61SIlya Dryomov if (req->r_osd) 2990922dab61SIlya Dryomov cancel_linger_request(req); 2991922dab61SIlya Dryomov 2992922dab61SIlya Dryomov request_reinit(req); 2993922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 2994922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 2995922dab61SIlya Dryomov req->r_flags = lreq->t.flags; 2996922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 2997922dab61SIlya Dryomov 2998922dab61SIlya Dryomov mutex_lock(&lreq->lock); 299919079203SIlya Dryomov if (lreq->is_watch && lreq->committed) { 3000922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 3001922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id); 3002922dab61SIlya Dryomov op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; 3003922dab61SIlya Dryomov op->watch.gen = ++lreq->register_gen; 3004922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 3005922dab61SIlya Dryomov op->watch.gen); 3006922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 3007922dab61SIlya Dryomov } else { 300819079203SIlya Dryomov if (!lreq->is_watch) 300919079203SIlya Dryomov lreq->notify_id = 0; 301019079203SIlya Dryomov else 3011922dab61SIlya Dryomov WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); 3012922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 3013922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 3014922dab61SIlya Dryomov } 3015922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3016922dab61SIlya Dryomov 3017922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 3018922dab61SIlya Dryomov req->r_linger = true; 3019922dab61SIlya Dryomov 3020922dab61SIlya Dryomov submit_request(req, true); 3021922dab61SIlya Dryomov } 3022922dab61SIlya Dryomov 3023922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 3024922dab61SIlya Dryomov { 3025922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 3026922dab61SIlya Dryomov 3027922dab61SIlya Dryomov mutex_lock(&lreq->lock); 3028922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 3029922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 3030922dab61SIlya Dryomov lreq->last_error); 3031922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 3032b07d3c4bSIlya Dryomov if (!req->r_result) { 3033b07d3c4bSIlya Dryomov lreq->watch_valid_thru = lreq->ping_sent; 3034b07d3c4bSIlya Dryomov } else if (!lreq->last_error) { 3035922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 3036922dab61SIlya Dryomov queue_watch_error(lreq); 3037922dab61SIlya Dryomov } 3038922dab61SIlya Dryomov } else { 3039922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 3040922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 3041922dab61SIlya Dryomov } 3042922dab61SIlya Dryomov 3043922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3044922dab61SIlya Dryomov linger_put(lreq); 3045922dab61SIlya Dryomov } 3046922dab61SIlya Dryomov 3047922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 3048922dab61SIlya Dryomov { 3049922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3050922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->ping_req; 3051922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 3052922dab61SIlya Dryomov 3053b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 3054922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 3055922dab61SIlya Dryomov return; 3056922dab61SIlya Dryomov } 3057922dab61SIlya Dryomov 3058922dab61SIlya Dryomov lreq->ping_sent = jiffies; 3059922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 3060922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 3061922dab61SIlya Dryomov lreq->register_gen); 3062922dab61SIlya Dryomov 3063922dab61SIlya Dryomov if (req->r_osd) 3064922dab61SIlya Dryomov cancel_linger_request(req); 3065922dab61SIlya Dryomov 3066922dab61SIlya Dryomov request_reinit(req); 3067922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 3068922dab61SIlya Dryomov 3069922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 3070922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id || 3071922dab61SIlya Dryomov op->watch.op != CEPH_OSD_WATCH_OP_PING); 3072922dab61SIlya Dryomov op->watch.gen = lreq->register_gen; 3073922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 3074922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 3075922dab61SIlya Dryomov req->r_linger = true; 3076922dab61SIlya Dryomov 3077922dab61SIlya Dryomov ceph_osdc_get_request(req); 3078922dab61SIlya Dryomov account_request(req); 3079922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 3080922dab61SIlya Dryomov link_request(lreq->osd, req); 3081922dab61SIlya Dryomov send_request(req); 3082922dab61SIlya Dryomov } 3083922dab61SIlya Dryomov 3084922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 3085922dab61SIlya Dryomov { 3086922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3087922dab61SIlya Dryomov struct ceph_osd *osd; 3088922dab61SIlya Dryomov 308981c65213SIlya Dryomov down_write(&osdc->lock); 309081c65213SIlya Dryomov linger_register(lreq); 309181c65213SIlya Dryomov if (lreq->is_watch) { 309281c65213SIlya Dryomov lreq->reg_req->r_ops[0].watch.cookie = lreq->linger_id; 309381c65213SIlya Dryomov lreq->ping_req->r_ops[0].watch.cookie = lreq->linger_id; 309481c65213SIlya Dryomov } else { 309581c65213SIlya Dryomov lreq->reg_req->r_ops[0].notify.cookie = lreq->linger_id; 309681c65213SIlya Dryomov } 309781c65213SIlya Dryomov 30987de030d6SIlya Dryomov calc_target(osdc, &lreq->t, NULL, false); 3099922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3100922dab61SIlya Dryomov link_linger(osd, lreq); 3101922dab61SIlya Dryomov 3102922dab61SIlya Dryomov send_linger(lreq); 310381c65213SIlya Dryomov up_write(&osdc->lock); 3104922dab61SIlya Dryomov } 3105922dab61SIlya Dryomov 31064609245eSIlya Dryomov static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) 31074609245eSIlya Dryomov { 31084609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 31094609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 31104609245eSIlya Dryomov 31114609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 31124609245eSIlya Dryomov 31134609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 31144609245eSIlya Dryomov lreq->linger_id); 31154609245eSIlya Dryomov if (!lookup_lreq) 31164609245eSIlya Dryomov return; 31174609245eSIlya Dryomov 31184609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 31194609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 31204609245eSIlya Dryomov linger_put(lreq); 31214609245eSIlya Dryomov } 31224609245eSIlya Dryomov 3123922dab61SIlya Dryomov /* 3124922dab61SIlya Dryomov * @lreq has to be both registered and linked. 3125922dab61SIlya Dryomov */ 3126922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 3127922dab61SIlya Dryomov { 312819079203SIlya Dryomov if (lreq->is_watch && lreq->ping_req->r_osd) 3129922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 3130922dab61SIlya Dryomov if (lreq->reg_req->r_osd) 3131922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 31324609245eSIlya Dryomov cancel_linger_map_check(lreq); 3133922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3134922dab61SIlya Dryomov linger_unregister(lreq); 3135922dab61SIlya Dryomov } 3136922dab61SIlya Dryomov 3137922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 3138922dab61SIlya Dryomov { 3139922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3140922dab61SIlya Dryomov 3141922dab61SIlya Dryomov down_write(&osdc->lock); 3142922dab61SIlya Dryomov if (__linger_registered(lreq)) 3143922dab61SIlya Dryomov __linger_cancel(lreq); 3144922dab61SIlya Dryomov up_write(&osdc->lock); 3145922dab61SIlya Dryomov } 3146922dab61SIlya Dryomov 31474609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq); 31484609245eSIlya Dryomov 31494609245eSIlya Dryomov static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) 31504609245eSIlya Dryomov { 31514609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 31524609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 31534609245eSIlya Dryomov 31544609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 31554609245eSIlya Dryomov WARN_ON(!map->epoch); 31564609245eSIlya Dryomov 31574609245eSIlya Dryomov if (lreq->register_gen) { 31584609245eSIlya Dryomov lreq->map_dne_bound = map->epoch; 31594609245eSIlya Dryomov dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, 31604609245eSIlya Dryomov lreq, lreq->linger_id); 31614609245eSIlya Dryomov } else { 31624609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", 31634609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 31644609245eSIlya Dryomov map->epoch); 31654609245eSIlya Dryomov } 31664609245eSIlya Dryomov 31674609245eSIlya Dryomov if (lreq->map_dne_bound) { 31684609245eSIlya Dryomov if (map->epoch >= lreq->map_dne_bound) { 31694609245eSIlya Dryomov /* we had a new enough map */ 31704609245eSIlya Dryomov pr_info("linger_id %llu pool does not exist\n", 31714609245eSIlya Dryomov lreq->linger_id); 31724609245eSIlya Dryomov linger_reg_commit_complete(lreq, -ENOENT); 31734609245eSIlya Dryomov __linger_cancel(lreq); 31744609245eSIlya Dryomov } 31754609245eSIlya Dryomov } else { 31764609245eSIlya Dryomov send_linger_map_check(lreq); 31774609245eSIlya Dryomov } 31784609245eSIlya Dryomov } 31794609245eSIlya Dryomov 31804609245eSIlya Dryomov static void linger_map_check_cb(struct ceph_mon_generic_request *greq) 31814609245eSIlya Dryomov { 31824609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 31834609245eSIlya Dryomov struct ceph_osd_linger_request *lreq; 31844609245eSIlya Dryomov u64 linger_id = greq->private_data; 31854609245eSIlya Dryomov 31864609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 31874609245eSIlya Dryomov 31884609245eSIlya Dryomov down_write(&osdc->lock); 31894609245eSIlya Dryomov lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); 31904609245eSIlya Dryomov if (!lreq) { 31914609245eSIlya Dryomov dout("%s linger_id %llu dne\n", __func__, linger_id); 31924609245eSIlya Dryomov goto out_unlock; 31934609245eSIlya Dryomov } 31944609245eSIlya Dryomov 31954609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", 31964609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 31974609245eSIlya Dryomov greq->u.newest); 31984609245eSIlya Dryomov if (!lreq->map_dne_bound) 31994609245eSIlya Dryomov lreq->map_dne_bound = greq->u.newest; 32004609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 32014609245eSIlya Dryomov check_linger_pool_dne(lreq); 32024609245eSIlya Dryomov 32034609245eSIlya Dryomov linger_put(lreq); 32044609245eSIlya Dryomov out_unlock: 32054609245eSIlya Dryomov up_write(&osdc->lock); 32064609245eSIlya Dryomov } 32074609245eSIlya Dryomov 32084609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq) 32094609245eSIlya Dryomov { 32104609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 32114609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 32124609245eSIlya Dryomov int ret; 32134609245eSIlya Dryomov 32144609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 32154609245eSIlya Dryomov 32164609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 32174609245eSIlya Dryomov lreq->linger_id); 32184609245eSIlya Dryomov if (lookup_lreq) { 32194609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 32204609245eSIlya Dryomov return; 32214609245eSIlya Dryomov } 32224609245eSIlya Dryomov 32234609245eSIlya Dryomov linger_get(lreq); 32244609245eSIlya Dryomov insert_linger_mc(&osdc->linger_map_checks, lreq); 32254609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 32264609245eSIlya Dryomov linger_map_check_cb, lreq->linger_id); 32274609245eSIlya Dryomov WARN_ON(ret); 32284609245eSIlya Dryomov } 32294609245eSIlya Dryomov 3230922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 3231922dab61SIlya Dryomov { 3232922dab61SIlya Dryomov int ret; 3233922dab61SIlya Dryomov 3234922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 3235922dab61SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); 3236922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 3237922dab61SIlya Dryomov } 3238922dab61SIlya Dryomov 323919079203SIlya Dryomov static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) 324019079203SIlya Dryomov { 324119079203SIlya Dryomov int ret; 324219079203SIlya Dryomov 324319079203SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 324419079203SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); 324519079203SIlya Dryomov return ret ?: lreq->notify_finish_error; 324619079203SIlya Dryomov } 324719079203SIlya Dryomov 3248922dab61SIlya Dryomov /* 3249fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 3250fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 3251fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 3252fbca9635SIlya Dryomov * reset is detected. 32533d14c5d2SYehuda Sadeh */ 32543d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 32553d14c5d2SYehuda Sadeh { 32563d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 32573d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 3258a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 32595aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 32607cc5e38fSIlya Dryomov unsigned long expiry_cutoff = jiffies - opts->osd_request_timeout; 32615aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 32625aea3dcdSIlya Dryomov struct rb_node *n, *p; 32633d14c5d2SYehuda Sadeh 32645aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 32655aea3dcdSIlya Dryomov down_write(&osdc->lock); 32663d14c5d2SYehuda Sadeh 32673d14c5d2SYehuda Sadeh /* 32683d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 32693d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 32703d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 32713d14c5d2SYehuda Sadeh */ 32725aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 32735aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 32745aea3dcdSIlya Dryomov bool found = false; 32753d14c5d2SYehuda Sadeh 32767cc5e38fSIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 32775aea3dcdSIlya Dryomov struct ceph_osd_request *req = 32785aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 32795aea3dcdSIlya Dryomov 32807cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 32817cc5e38fSIlya Dryomov 32825aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 32835aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 32845aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 32855aea3dcdSIlya Dryomov found = true; 32865aea3dcdSIlya Dryomov } 32877cc5e38fSIlya Dryomov if (opts->osd_request_timeout && 32887cc5e38fSIlya Dryomov time_before(req->r_start_stamp, expiry_cutoff)) { 32897cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 32907cc5e38fSIlya Dryomov req->r_tid, osd->o_osd); 32917cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 32927cc5e38fSIlya Dryomov } 32935aea3dcdSIlya Dryomov } 3294922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 3295922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3296922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 3297922dab61SIlya Dryomov 3298922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 3299922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 3300922dab61SIlya Dryomov found = true; 3301922dab61SIlya Dryomov 3302922dab61SIlya Dryomov mutex_lock(&lreq->lock); 330319079203SIlya Dryomov if (lreq->is_watch && lreq->committed && !lreq->last_error) 3304922dab61SIlya Dryomov send_linger_ping(lreq); 3305922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3306922dab61SIlya Dryomov } 33075aea3dcdSIlya Dryomov 33085aea3dcdSIlya Dryomov if (found) 33093d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 33103d14c5d2SYehuda Sadeh } 33115aea3dcdSIlya Dryomov 33127cc5e38fSIlya Dryomov if (opts->osd_request_timeout) { 33137cc5e38fSIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 33147cc5e38fSIlya Dryomov struct ceph_osd_request *req = 33157cc5e38fSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 33167cc5e38fSIlya Dryomov 33177cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 33187cc5e38fSIlya Dryomov 33197cc5e38fSIlya Dryomov if (time_before(req->r_start_stamp, expiry_cutoff)) { 33207cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 33217cc5e38fSIlya Dryomov req->r_tid, osdc->homeless_osd.o_osd); 33227cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 33237cc5e38fSIlya Dryomov } 33247cc5e38fSIlya Dryomov } 33257cc5e38fSIlya Dryomov } 33267cc5e38fSIlya Dryomov 33275aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 33285aea3dcdSIlya Dryomov maybe_request_map(osdc); 33295aea3dcdSIlya Dryomov 33303d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 33315aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 33325aea3dcdSIlya Dryomov struct ceph_osd, 33333d14c5d2SYehuda Sadeh o_keepalive_item); 33343d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 33353d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 33363d14c5d2SYehuda Sadeh } 33373d14c5d2SYehuda Sadeh 33385aea3dcdSIlya Dryomov up_write(&osdc->lock); 3339fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 3340fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 33413d14c5d2SYehuda Sadeh } 33423d14c5d2SYehuda Sadeh 33433d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 33443d14c5d2SYehuda Sadeh { 33453d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 33463d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 33473d14c5d2SYehuda Sadeh osds_timeout_work.work); 3348a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 334942a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 33503d14c5d2SYehuda Sadeh 335142a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 33525aea3dcdSIlya Dryomov down_write(&osdc->lock); 335342a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 335442a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 335542a2c09fSIlya Dryomov break; 335642a2c09fSIlya Dryomov 33575aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 3358922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 33595aea3dcdSIlya Dryomov close_osd(osd); 336042a2c09fSIlya Dryomov } 336142a2c09fSIlya Dryomov 33625aea3dcdSIlya Dryomov up_write(&osdc->lock); 33633d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 33643d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 33653d14c5d2SYehuda Sadeh } 33663d14c5d2SYehuda Sadeh 3367205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 3368205ee118SIlya Dryomov struct ceph_object_locator *oloc) 3369205ee118SIlya Dryomov { 3370205ee118SIlya Dryomov u8 struct_v, struct_cv; 3371205ee118SIlya Dryomov u32 len; 3372205ee118SIlya Dryomov void *struct_end; 3373205ee118SIlya Dryomov int ret = 0; 3374205ee118SIlya Dryomov 3375205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3376205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3377205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3378205ee118SIlya Dryomov if (struct_v < 3) { 3379205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 3380205ee118SIlya Dryomov struct_v, struct_cv); 3381205ee118SIlya Dryomov goto e_inval; 3382205ee118SIlya Dryomov } 3383205ee118SIlya Dryomov if (struct_cv > 6) { 3384205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 3385205ee118SIlya Dryomov struct_v, struct_cv); 3386205ee118SIlya Dryomov goto e_inval; 3387205ee118SIlya Dryomov } 3388205ee118SIlya Dryomov len = ceph_decode_32(p); 3389205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3390205ee118SIlya Dryomov struct_end = *p + len; 3391205ee118SIlya Dryomov 3392205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 3393205ee118SIlya Dryomov *p += 4; /* skip preferred */ 3394205ee118SIlya Dryomov 3395205ee118SIlya Dryomov len = ceph_decode_32(p); 3396205ee118SIlya Dryomov if (len > 0) { 3397205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 3398205ee118SIlya Dryomov goto e_inval; 3399205ee118SIlya Dryomov } 3400205ee118SIlya Dryomov 3401205ee118SIlya Dryomov if (struct_v >= 5) { 3402cd08e0a2SYan, Zheng bool changed = false; 3403cd08e0a2SYan, Zheng 3404205ee118SIlya Dryomov len = ceph_decode_32(p); 3405205ee118SIlya Dryomov if (len > 0) { 340630c156d9SYan, Zheng ceph_decode_need(p, end, len, e_inval); 3407cd08e0a2SYan, Zheng if (!oloc->pool_ns || 3408cd08e0a2SYan, Zheng ceph_compare_string(oloc->pool_ns, *p, len)) 3409cd08e0a2SYan, Zheng changed = true; 341030c156d9SYan, Zheng *p += len; 3411cd08e0a2SYan, Zheng } else { 3412cd08e0a2SYan, Zheng if (oloc->pool_ns) 3413cd08e0a2SYan, Zheng changed = true; 3414cd08e0a2SYan, Zheng } 3415cd08e0a2SYan, Zheng if (changed) { 3416cd08e0a2SYan, Zheng /* redirect changes namespace */ 3417cd08e0a2SYan, Zheng pr_warn("ceph_object_locator::nspace is changed\n"); 3418cd08e0a2SYan, Zheng goto e_inval; 3419205ee118SIlya Dryomov } 3420205ee118SIlya Dryomov } 3421205ee118SIlya Dryomov 3422205ee118SIlya Dryomov if (struct_v >= 6) { 3423205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 3424205ee118SIlya Dryomov if (hash != -1) { 3425205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 3426205ee118SIlya Dryomov goto e_inval; 3427205ee118SIlya Dryomov } 3428205ee118SIlya Dryomov } 3429205ee118SIlya Dryomov 3430205ee118SIlya Dryomov /* skip the rest */ 3431205ee118SIlya Dryomov *p = struct_end; 3432205ee118SIlya Dryomov out: 3433205ee118SIlya Dryomov return ret; 3434205ee118SIlya Dryomov 3435205ee118SIlya Dryomov e_inval: 3436205ee118SIlya Dryomov ret = -EINVAL; 3437205ee118SIlya Dryomov goto out; 3438205ee118SIlya Dryomov } 3439205ee118SIlya Dryomov 3440205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 3441205ee118SIlya Dryomov struct ceph_request_redirect *redir) 3442205ee118SIlya Dryomov { 3443205ee118SIlya Dryomov u8 struct_v, struct_cv; 3444205ee118SIlya Dryomov u32 len; 3445205ee118SIlya Dryomov void *struct_end; 3446205ee118SIlya Dryomov int ret; 3447205ee118SIlya Dryomov 3448205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 3449205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 3450205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 3451205ee118SIlya Dryomov if (struct_cv > 1) { 3452205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 3453205ee118SIlya Dryomov struct_v, struct_cv); 3454205ee118SIlya Dryomov goto e_inval; 3455205ee118SIlya Dryomov } 3456205ee118SIlya Dryomov len = ceph_decode_32(p); 3457205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 3458205ee118SIlya Dryomov struct_end = *p + len; 3459205ee118SIlya Dryomov 3460205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 3461205ee118SIlya Dryomov if (ret) 3462205ee118SIlya Dryomov goto out; 3463205ee118SIlya Dryomov 3464205ee118SIlya Dryomov len = ceph_decode_32(p); 3465205ee118SIlya Dryomov if (len > 0) { 3466205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 3467205ee118SIlya Dryomov goto e_inval; 3468205ee118SIlya Dryomov } 3469205ee118SIlya Dryomov 3470205ee118SIlya Dryomov len = ceph_decode_32(p); 3471205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 3472205ee118SIlya Dryomov 3473205ee118SIlya Dryomov /* skip the rest */ 3474205ee118SIlya Dryomov *p = struct_end; 3475205ee118SIlya Dryomov out: 3476205ee118SIlya Dryomov return ret; 3477205ee118SIlya Dryomov 3478205ee118SIlya Dryomov e_inval: 3479205ee118SIlya Dryomov ret = -EINVAL; 3480205ee118SIlya Dryomov goto out; 3481205ee118SIlya Dryomov } 3482205ee118SIlya Dryomov 3483fe5da05eSIlya Dryomov struct MOSDOpReply { 3484fe5da05eSIlya Dryomov struct ceph_pg pgid; 3485fe5da05eSIlya Dryomov u64 flags; 3486fe5da05eSIlya Dryomov int result; 3487fe5da05eSIlya Dryomov u32 epoch; 3488fe5da05eSIlya Dryomov int num_ops; 3489fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 3490fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 3491fe5da05eSIlya Dryomov int retry_attempt; 3492fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 3493fe5da05eSIlya Dryomov u64 user_version; 3494fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 3495fe5da05eSIlya Dryomov }; 349625845472SSage Weil 3497fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 34983d14c5d2SYehuda Sadeh { 3499fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 3500fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 3501fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 3502fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 3503b0b31a8fSIlya Dryomov u8 decode_redir; 3504fe5da05eSIlya Dryomov u32 len; 3505fe5da05eSIlya Dryomov int ret; 3506fe5da05eSIlya Dryomov int i; 35073d14c5d2SYehuda Sadeh 3508fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 3509fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 3510fe5da05eSIlya Dryomov p += len; /* skip oid */ 35111b83bef2SSage Weil 3512fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 3513fe5da05eSIlya Dryomov if (ret) 3514fe5da05eSIlya Dryomov return ret; 35151b83bef2SSage Weil 3516fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 3517fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 3518fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 3519fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 3520fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 3521fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 35221b83bef2SSage Weil 3523fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 3524fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 3525fe5da05eSIlya Dryomov goto e_inval; 35261b83bef2SSage Weil 3527fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 3528fe5da05eSIlya Dryomov e_inval); 3529fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 35301b83bef2SSage Weil struct ceph_osd_op *op = p; 35311b83bef2SSage Weil 3532fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 35331b83bef2SSage Weil p += sizeof(*op); 35341b83bef2SSage Weil } 3535fe5da05eSIlya Dryomov 3536fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 3537fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 3538fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 3539fe5da05eSIlya Dryomov 3540fe5da05eSIlya Dryomov if (version >= 5) { 3541fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 3542fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 3543fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 3544fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 3545fe5da05eSIlya Dryomov } else { 3546fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 3547fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 35481b83bef2SSage Weil } 35491b83bef2SSage Weil 3550fe5da05eSIlya Dryomov if (version >= 6) { 3551fe5da05eSIlya Dryomov if (version >= 7) 3552fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 3553b0b31a8fSIlya Dryomov else 3554b0b31a8fSIlya Dryomov decode_redir = 1; 3555b0b31a8fSIlya Dryomov } else { 3556b0b31a8fSIlya Dryomov decode_redir = 0; 3557b0b31a8fSIlya Dryomov } 3558b0b31a8fSIlya Dryomov 3559b0b31a8fSIlya Dryomov if (decode_redir) { 3560fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 3561fe5da05eSIlya Dryomov if (ret) 3562fe5da05eSIlya Dryomov return ret; 3563205ee118SIlya Dryomov } else { 3564fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 3565205ee118SIlya Dryomov } 3566205ee118SIlya Dryomov 3567fe5da05eSIlya Dryomov return 0; 3568205ee118SIlya Dryomov 3569fe5da05eSIlya Dryomov e_inval: 3570fe5da05eSIlya Dryomov return -EINVAL; 3571fe5da05eSIlya Dryomov } 3572fe5da05eSIlya Dryomov 3573fe5da05eSIlya Dryomov /* 3574b18b9550SIlya Dryomov * Handle MOSDOpReply. Set ->r_result and call the callback if it is 3575b18b9550SIlya Dryomov * specified. 3576fe5da05eSIlya Dryomov */ 35775aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 3578fe5da05eSIlya Dryomov { 35795aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 3580fe5da05eSIlya Dryomov struct ceph_osd_request *req; 3581fe5da05eSIlya Dryomov struct MOSDOpReply m; 3582fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 3583fe5da05eSIlya Dryomov u32 data_len = 0; 3584fe5da05eSIlya Dryomov int ret; 3585fe5da05eSIlya Dryomov int i; 3586fe5da05eSIlya Dryomov 3587fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 3588fe5da05eSIlya Dryomov 35895aea3dcdSIlya Dryomov down_read(&osdc->lock); 35905aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 35915aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 35925aea3dcdSIlya Dryomov goto out_unlock_osdc; 3593fe5da05eSIlya Dryomov } 35945aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 35955aea3dcdSIlya Dryomov 35965aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 35975aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 35985aea3dcdSIlya Dryomov if (!req) { 35995aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 36005aea3dcdSIlya Dryomov goto out_unlock_session; 36015aea3dcdSIlya Dryomov } 3602fe5da05eSIlya Dryomov 3603cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns; 3604fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 3605cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = NULL; 3606fe5da05eSIlya Dryomov if (ret) { 3607fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 3608fe5da05eSIlya Dryomov req->r_tid, ret); 3609fe5da05eSIlya Dryomov ceph_msg_dump(msg); 3610fe5da05eSIlya Dryomov goto fail_request; 3611fe5da05eSIlya Dryomov } 3612fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 3613fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 3614fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 3615fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 3616fe5da05eSIlya Dryomov 3617fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 3618fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 3619fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 3620fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 3621fe5da05eSIlya Dryomov req->r_attempts - 1); 36225aea3dcdSIlya Dryomov goto out_unlock_session; 3623fe5da05eSIlya Dryomov } 3624fe5da05eSIlya Dryomov } else { 3625fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 3626fe5da05eSIlya Dryomov } 3627fe5da05eSIlya Dryomov 3628fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 3629fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 3630fe5da05eSIlya Dryomov m.redirect.oloc.pool); 36315aea3dcdSIlya Dryomov unlink_request(osd, req); 36325aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 3633205ee118SIlya Dryomov 363430c156d9SYan, Zheng /* 363530c156d9SYan, Zheng * Not ceph_oloc_copy() - changing pool_ns is not 363630c156d9SYan, Zheng * supported. 363730c156d9SYan, Zheng */ 363830c156d9SYan, Zheng req->r_t.target_oloc.pool = m.redirect.oloc.pool; 36395aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; 36405aea3dcdSIlya Dryomov req->r_tid = 0; 36415aea3dcdSIlya Dryomov __submit_request(req, false); 36425aea3dcdSIlya Dryomov goto out_unlock_osdc; 3643205ee118SIlya Dryomov } 3644205ee118SIlya Dryomov 3645fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 3646fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 3647fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 3648fe5da05eSIlya Dryomov goto fail_request; 3649fe5da05eSIlya Dryomov } 3650fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 3651fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 3652fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 3653fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 3654fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 3655fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 3656fe5da05eSIlya Dryomov } 3657fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 3658fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 3659fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 3660fe5da05eSIlya Dryomov goto fail_request; 3661fe5da05eSIlya Dryomov } 3662b18b9550SIlya Dryomov dout("%s req %p tid %llu result %d data_len %u\n", __func__, 3663b18b9550SIlya Dryomov req, req->r_tid, m.result, data_len); 36643d14c5d2SYehuda Sadeh 3665b18b9550SIlya Dryomov /* 3666b18b9550SIlya Dryomov * Since we only ever request ONDISK, we should only ever get 3667b18b9550SIlya Dryomov * one (type of) reply back. 3668b18b9550SIlya Dryomov */ 3669b18b9550SIlya Dryomov WARN_ON(!(m.flags & CEPH_OSD_FLAG_ONDISK)); 3670fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 367145ee2c1dSIlya Dryomov finish_request(req); 36725aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 36735aea3dcdSIlya Dryomov up_read(&osdc->lock); 36743d14c5d2SYehuda Sadeh 3675fe5da05eSIlya Dryomov __complete_request(req); 36763d14c5d2SYehuda Sadeh return; 3677fe5da05eSIlya Dryomov 3678fe5da05eSIlya Dryomov fail_request: 36794609245eSIlya Dryomov complete_request(req, -EIO); 36805aea3dcdSIlya Dryomov out_unlock_session: 36815aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 36825aea3dcdSIlya Dryomov out_unlock_osdc: 36835aea3dcdSIlya Dryomov up_read(&osdc->lock); 36843d14c5d2SYehuda Sadeh } 36853d14c5d2SYehuda Sadeh 368642c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 368742c1b124SIlya Dryomov { 368842c1b124SIlya Dryomov struct rb_node *n; 368942c1b124SIlya Dryomov 369042c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 369142c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 369242c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 369342c1b124SIlya Dryomov 369442c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 369542c1b124SIlya Dryomov } 369642c1b124SIlya Dryomov } 369742c1b124SIlya Dryomov 36985aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 36993d14c5d2SYehuda Sadeh { 37005aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 37013d14c5d2SYehuda Sadeh 37025aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 37035aea3dcdSIlya Dryomov if (!pi) 37045aea3dcdSIlya Dryomov return false; 37053d14c5d2SYehuda Sadeh 37065aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 37073d14c5d2SYehuda Sadeh } 37083d14c5d2SYehuda Sadeh 3709922dab61SIlya Dryomov static enum calc_target_result 3710922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 3711922dab61SIlya Dryomov { 3712922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3713922dab61SIlya Dryomov enum calc_target_result ct_res; 3714922dab61SIlya Dryomov 37157de030d6SIlya Dryomov ct_res = calc_target(osdc, &lreq->t, NULL, true); 3716922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 3717922dab61SIlya Dryomov struct ceph_osd *osd; 3718922dab61SIlya Dryomov 3719922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3720922dab61SIlya Dryomov if (osd != lreq->osd) { 3721922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3722922dab61SIlya Dryomov link_linger(osd, lreq); 3723922dab61SIlya Dryomov } 3724922dab61SIlya Dryomov } 3725922dab61SIlya Dryomov 3726922dab61SIlya Dryomov return ct_res; 3727922dab61SIlya Dryomov } 3728922dab61SIlya Dryomov 37293d14c5d2SYehuda Sadeh /* 37305aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 37313d14c5d2SYehuda Sadeh */ 37325aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 37335aea3dcdSIlya Dryomov bool force_resend, 37345aea3dcdSIlya Dryomov bool cleared_full, 37355aea3dcdSIlya Dryomov bool check_pool_cleared_full, 37365aea3dcdSIlya Dryomov struct rb_root *need_resend, 37375aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 37383d14c5d2SYehuda Sadeh { 37395aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 37405aea3dcdSIlya Dryomov struct rb_node *n; 37415aea3dcdSIlya Dryomov bool force_resend_writes; 37423d14c5d2SYehuda Sadeh 3743922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 3744922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3745922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3746922dab61SIlya Dryomov enum calc_target_result ct_res; 3747922dab61SIlya Dryomov 3748922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 3749922dab61SIlya Dryomov 3750922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 3751922dab61SIlya Dryomov lreq->linger_id); 3752922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 3753922dab61SIlya Dryomov switch (ct_res) { 3754922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 3755922dab61SIlya Dryomov force_resend_writes = cleared_full || 3756922dab61SIlya Dryomov (check_pool_cleared_full && 3757922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 3758922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 3759922dab61SIlya Dryomov break; 3760922dab61SIlya Dryomov 3761922dab61SIlya Dryomov /* fall through */ 3762922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 37634609245eSIlya Dryomov cancel_linger_map_check(lreq); 3764922dab61SIlya Dryomov /* 3765922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 3766922dab61SIlya Dryomov * may have already added it to the list, since 3767922dab61SIlya Dryomov * it's not unlinked here. 3768922dab61SIlya Dryomov */ 3769922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 3770922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 3771922dab61SIlya Dryomov break; 3772922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 3773a10bcb19SIlya Dryomov list_del_init(&lreq->scan_item); 37744609245eSIlya Dryomov check_linger_pool_dne(lreq); 3775922dab61SIlya Dryomov break; 3776922dab61SIlya Dryomov } 3777922dab61SIlya Dryomov } 3778922dab61SIlya Dryomov 37795aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 37805aea3dcdSIlya Dryomov struct ceph_osd_request *req = 37815aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 37825aea3dcdSIlya Dryomov enum calc_target_result ct_res; 3783ab60b16dSAlex Elder 37844609245eSIlya Dryomov n = rb_next(n); /* unlink_request(), check_pool_dne() */ 3785ab60b16dSAlex Elder 37865aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 37877de030d6SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, &req->r_osd->o_con, 37887de030d6SIlya Dryomov false); 37895aea3dcdSIlya Dryomov switch (ct_res) { 37905aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 37915aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 37925aea3dcdSIlya Dryomov (check_pool_cleared_full && 37935aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 37945aea3dcdSIlya Dryomov if (!force_resend && 37955aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 37965aea3dcdSIlya Dryomov !force_resend_writes)) 37975aea3dcdSIlya Dryomov break; 3798a40c4f10SYehuda Sadeh 37995aea3dcdSIlya Dryomov /* fall through */ 38005aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 38014609245eSIlya Dryomov cancel_map_check(req); 38025aea3dcdSIlya Dryomov unlink_request(osd, req); 38035aea3dcdSIlya Dryomov insert_request(need_resend, req); 38045aea3dcdSIlya Dryomov break; 38055aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 38064609245eSIlya Dryomov check_pool_dne(req); 38075aea3dcdSIlya Dryomov break; 3808a40c4f10SYehuda Sadeh } 38093d14c5d2SYehuda Sadeh } 38103d14c5d2SYehuda Sadeh } 38116f6c7006SSage Weil 381242c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 38135aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 38145aea3dcdSIlya Dryomov struct rb_root *need_resend, 38155aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 381642c1b124SIlya Dryomov { 381742c1b124SIlya Dryomov struct ceph_osdmap *newmap; 381842c1b124SIlya Dryomov struct rb_node *n; 381942c1b124SIlya Dryomov bool skipped_map = false; 382042c1b124SIlya Dryomov bool was_full; 382142c1b124SIlya Dryomov 3822b7ec35b3SIlya Dryomov was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 382342c1b124SIlya Dryomov set_pool_was_full(osdc); 382442c1b124SIlya Dryomov 382542c1b124SIlya Dryomov if (incremental) 382642c1b124SIlya Dryomov newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); 382742c1b124SIlya Dryomov else 382842c1b124SIlya Dryomov newmap = ceph_osdmap_decode(&p, end); 382942c1b124SIlya Dryomov if (IS_ERR(newmap)) 383042c1b124SIlya Dryomov return PTR_ERR(newmap); 383142c1b124SIlya Dryomov 383242c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 383342c1b124SIlya Dryomov /* 383442c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 383542c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 383642c1b124SIlya Dryomov * should be false. 383742c1b124SIlya Dryomov */ 383842c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 383942c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 384042c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 384142c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 384242c1b124SIlya Dryomov 384342c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 384442c1b124SIlya Dryomov if (old_pi) 384542c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 384642c1b124SIlya Dryomov else 384742c1b124SIlya Dryomov WARN_ON(pi->was_full); 384842c1b124SIlya Dryomov } 384942c1b124SIlya Dryomov 385042c1b124SIlya Dryomov if (osdc->osdmap->epoch && 385142c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 385242c1b124SIlya Dryomov WARN_ON(incremental); 385342c1b124SIlya Dryomov skipped_map = true; 385442c1b124SIlya Dryomov } 385542c1b124SIlya Dryomov 385642c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 385742c1b124SIlya Dryomov osdc->osdmap = newmap; 385842c1b124SIlya Dryomov } 385942c1b124SIlya Dryomov 3860b7ec35b3SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 38615aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 38625aea3dcdSIlya Dryomov need_resend, need_resend_linger); 38635aea3dcdSIlya Dryomov 38645aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 38655aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 38665aea3dcdSIlya Dryomov 38675aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 38685aea3dcdSIlya Dryomov 38695aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 38705aea3dcdSIlya Dryomov need_resend_linger); 38715aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 38725aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 38735aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 38745aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 38755aea3dcdSIlya Dryomov close_osd(osd); 38765aea3dcdSIlya Dryomov } 387742c1b124SIlya Dryomov 387842c1b124SIlya Dryomov return 0; 387942c1b124SIlya Dryomov } 38806f6c7006SSage Weil 38815aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 38825aea3dcdSIlya Dryomov struct rb_root *need_resend, 38835aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 38845aea3dcdSIlya Dryomov { 3885922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 388604c7d789SIlya Dryomov enum calc_target_result ct_res; 38875aea3dcdSIlya Dryomov struct rb_node *n; 38885aea3dcdSIlya Dryomov 388904c7d789SIlya Dryomov /* make sure need_resend targets reflect latest map */ 389004c7d789SIlya Dryomov for (n = rb_first(need_resend); n; ) { 389104c7d789SIlya Dryomov struct ceph_osd_request *req = 389204c7d789SIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 389304c7d789SIlya Dryomov 389404c7d789SIlya Dryomov n = rb_next(n); 389504c7d789SIlya Dryomov 389604c7d789SIlya Dryomov if (req->r_t.epoch < osdc->osdmap->epoch) { 389704c7d789SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, NULL, false); 389804c7d789SIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) { 389904c7d789SIlya Dryomov erase_request(need_resend, req); 390004c7d789SIlya Dryomov check_pool_dne(req); 390104c7d789SIlya Dryomov } 390204c7d789SIlya Dryomov } 390304c7d789SIlya Dryomov } 390404c7d789SIlya Dryomov 39055aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 39065aea3dcdSIlya Dryomov struct ceph_osd_request *req = 39075aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 39085aea3dcdSIlya Dryomov struct ceph_osd *osd; 39095aea3dcdSIlya Dryomov 39105aea3dcdSIlya Dryomov n = rb_next(n); 39115aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 39125aea3dcdSIlya Dryomov 39135aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 39145aea3dcdSIlya Dryomov link_request(osd, req); 39155aea3dcdSIlya Dryomov if (!req->r_linger) { 39165aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 39175aea3dcdSIlya Dryomov send_request(req); 3918922dab61SIlya Dryomov } else { 3919922dab61SIlya Dryomov cancel_linger_request(req); 39205aea3dcdSIlya Dryomov } 39215aea3dcdSIlya Dryomov } 3922922dab61SIlya Dryomov 3923922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 3924922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 3925922dab61SIlya Dryomov send_linger(lreq); 3926922dab61SIlya Dryomov 3927922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 3928922dab61SIlya Dryomov } 39295aea3dcdSIlya Dryomov } 39305aea3dcdSIlya Dryomov 39313d14c5d2SYehuda Sadeh /* 39323d14c5d2SYehuda Sadeh * Process updated osd map. 39333d14c5d2SYehuda Sadeh * 39343d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 39353d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 39363d14c5d2SYehuda Sadeh * off to different OSDs as needed. 39373d14c5d2SYehuda Sadeh */ 39383d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 39393d14c5d2SYehuda Sadeh { 394042c1b124SIlya Dryomov void *p = msg->front.iov_base; 394142c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 39423d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 39433d14c5d2SYehuda Sadeh u32 epoch; 39443d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 39455aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 39465aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 394742c1b124SIlya Dryomov bool handled_incremental = false; 394842c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 394942c1b124SIlya Dryomov bool pauserd, pausewr; 395042c1b124SIlya Dryomov int err; 39513d14c5d2SYehuda Sadeh 395242c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 39535aea3dcdSIlya Dryomov down_write(&osdc->lock); 39543d14c5d2SYehuda Sadeh 39553d14c5d2SYehuda Sadeh /* verify fsid */ 39563d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 39573d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 39583d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 395942c1b124SIlya Dryomov goto bad; 39603d14c5d2SYehuda Sadeh 3961b7ec35b3SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3962b7ec35b3SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3963b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 396442c1b124SIlya Dryomov have_pool_full(osdc); 39659a1ea2dbSJosh Durgin 39663d14c5d2SYehuda Sadeh /* incremental maps */ 39673d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 39683d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 39693d14c5d2SYehuda Sadeh while (nr_maps > 0) { 39703d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 39713d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 39723d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 39733d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 397442c1b124SIlya Dryomov if (osdc->osdmap->epoch && 397542c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 39763d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 39773d14c5d2SYehuda Sadeh epoch, maplen); 39785aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 39795aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 398042c1b124SIlya Dryomov if (err) 39813d14c5d2SYehuda Sadeh goto bad; 398242c1b124SIlya Dryomov handled_incremental = true; 39833d14c5d2SYehuda Sadeh } else { 39843d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 39853d14c5d2SYehuda Sadeh epoch, maplen); 39863d14c5d2SYehuda Sadeh } 398742c1b124SIlya Dryomov p += maplen; 39883d14c5d2SYehuda Sadeh nr_maps--; 39893d14c5d2SYehuda Sadeh } 399042c1b124SIlya Dryomov if (handled_incremental) 39913d14c5d2SYehuda Sadeh goto done; 39923d14c5d2SYehuda Sadeh 39933d14c5d2SYehuda Sadeh /* full maps */ 39943d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 39953d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 39963d14c5d2SYehuda Sadeh while (nr_maps) { 39973d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 39983d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 39993d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 40003d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 40013d14c5d2SYehuda Sadeh if (nr_maps > 1) { 40023d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 40033d14c5d2SYehuda Sadeh epoch, maplen); 4004e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 40053d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 40063d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 40073d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 40083d14c5d2SYehuda Sadeh } else { 40093d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 40105aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 40115aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 401242c1b124SIlya Dryomov if (err) 40133d14c5d2SYehuda Sadeh goto bad; 40143d14c5d2SYehuda Sadeh } 40153d14c5d2SYehuda Sadeh p += maplen; 40163d14c5d2SYehuda Sadeh nr_maps--; 40173d14c5d2SYehuda Sadeh } 40183d14c5d2SYehuda Sadeh 40193d14c5d2SYehuda Sadeh done: 4020cd634fb6SSage Weil /* 4021cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 4022cd634fb6SSage Weil * we find out when we are no longer full and stop returning 4023cd634fb6SSage Weil * ENOSPC. 4024cd634fb6SSage Weil */ 4025b7ec35b3SIlya Dryomov pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 4026b7ec35b3SIlya Dryomov pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 4027b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 402842c1b124SIlya Dryomov have_pool_full(osdc); 402958eb7932SJeff Layton if (was_pauserd || was_pausewr || pauserd || pausewr || 403058eb7932SJeff Layton osdc->osdmap->epoch < osdc->epoch_barrier) 403142c1b124SIlya Dryomov maybe_request_map(osdc); 4032cd634fb6SSage Weil 40335aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 403442c1b124SIlya Dryomov 4035fc36d0a4SJeff Layton ceph_osdc_abort_on_full(osdc); 403642c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 403742c1b124SIlya Dryomov osdc->osdmap->epoch); 40385aea3dcdSIlya Dryomov up_write(&osdc->lock); 40393d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 40403d14c5d2SYehuda Sadeh return; 40413d14c5d2SYehuda Sadeh 40423d14c5d2SYehuda Sadeh bad: 40433d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 40443d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 40455aea3dcdSIlya Dryomov up_write(&osdc->lock); 40465aea3dcdSIlya Dryomov } 40475aea3dcdSIlya Dryomov 40485aea3dcdSIlya Dryomov /* 40495aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 40505aea3dcdSIlya Dryomov */ 40515aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 40525aea3dcdSIlya Dryomov { 40535aea3dcdSIlya Dryomov struct rb_node *n; 40545aea3dcdSIlya Dryomov 4055a02a946dSIlya Dryomov clear_backoffs(osd); 4056a02a946dSIlya Dryomov 4057922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 40585aea3dcdSIlya Dryomov struct ceph_osd_request *req = 40595aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 40605aea3dcdSIlya Dryomov 4061922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 4062922dab61SIlya Dryomov 40635aea3dcdSIlya Dryomov if (!req->r_linger) { 40645aea3dcdSIlya Dryomov if (!req->r_t.paused) 40655aea3dcdSIlya Dryomov send_request(req); 4066922dab61SIlya Dryomov } else { 4067922dab61SIlya Dryomov cancel_linger_request(req); 40685aea3dcdSIlya Dryomov } 40695aea3dcdSIlya Dryomov } 4070922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 4071922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 4072922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 4073922dab61SIlya Dryomov 4074922dab61SIlya Dryomov send_linger(lreq); 4075922dab61SIlya Dryomov } 40765aea3dcdSIlya Dryomov } 40775aea3dcdSIlya Dryomov 40785aea3dcdSIlya Dryomov /* 40795aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 40805aea3dcdSIlya Dryomov */ 40815aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 40825aea3dcdSIlya Dryomov { 40835aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 40845aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 40855aea3dcdSIlya Dryomov 40865aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 40875aea3dcdSIlya Dryomov 40885aea3dcdSIlya Dryomov down_write(&osdc->lock); 40895aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 40905aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 40915aea3dcdSIlya Dryomov goto out_unlock; 40925aea3dcdSIlya Dryomov } 40935aea3dcdSIlya Dryomov 40945aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 40955aea3dcdSIlya Dryomov kick_osd_requests(osd); 40965aea3dcdSIlya Dryomov maybe_request_map(osdc); 40975aea3dcdSIlya Dryomov 40985aea3dcdSIlya Dryomov out_unlock: 40995aea3dcdSIlya Dryomov up_write(&osdc->lock); 41003d14c5d2SYehuda Sadeh } 41013d14c5d2SYehuda Sadeh 4102a02a946dSIlya Dryomov struct MOSDBackoff { 4103a02a946dSIlya Dryomov struct ceph_spg spgid; 4104a02a946dSIlya Dryomov u32 map_epoch; 4105a02a946dSIlya Dryomov u8 op; 4106a02a946dSIlya Dryomov u64 id; 4107a02a946dSIlya Dryomov struct ceph_hobject_id *begin; 4108a02a946dSIlya Dryomov struct ceph_hobject_id *end; 4109a02a946dSIlya Dryomov }; 4110a02a946dSIlya Dryomov 4111a02a946dSIlya Dryomov static int decode_MOSDBackoff(const struct ceph_msg *msg, struct MOSDBackoff *m) 4112a02a946dSIlya Dryomov { 4113a02a946dSIlya Dryomov void *p = msg->front.iov_base; 4114a02a946dSIlya Dryomov void *const end = p + msg->front.iov_len; 4115a02a946dSIlya Dryomov u8 struct_v; 4116a02a946dSIlya Dryomov u32 struct_len; 4117a02a946dSIlya Dryomov int ret; 4118a02a946dSIlya Dryomov 4119a02a946dSIlya Dryomov ret = ceph_start_decoding(&p, end, 1, "spg_t", &struct_v, &struct_len); 4120a02a946dSIlya Dryomov if (ret) 4121a02a946dSIlya Dryomov return ret; 4122a02a946dSIlya Dryomov 4123a02a946dSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->spgid.pgid); 4124a02a946dSIlya Dryomov if (ret) 4125a02a946dSIlya Dryomov return ret; 4126a02a946dSIlya Dryomov 4127a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->spgid.shard, e_inval); 4128a02a946dSIlya Dryomov ceph_decode_32_safe(&p, end, m->map_epoch, e_inval); 4129a02a946dSIlya Dryomov ceph_decode_8_safe(&p, end, m->op, e_inval); 4130a02a946dSIlya Dryomov ceph_decode_64_safe(&p, end, m->id, e_inval); 4131a02a946dSIlya Dryomov 4132a02a946dSIlya Dryomov m->begin = kzalloc(sizeof(*m->begin), GFP_NOIO); 4133a02a946dSIlya Dryomov if (!m->begin) 4134a02a946dSIlya Dryomov return -ENOMEM; 4135a02a946dSIlya Dryomov 4136a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->begin); 4137a02a946dSIlya Dryomov if (ret) { 4138a02a946dSIlya Dryomov free_hoid(m->begin); 4139a02a946dSIlya Dryomov return ret; 4140a02a946dSIlya Dryomov } 4141a02a946dSIlya Dryomov 4142a02a946dSIlya Dryomov m->end = kzalloc(sizeof(*m->end), GFP_NOIO); 4143a02a946dSIlya Dryomov if (!m->end) { 4144a02a946dSIlya Dryomov free_hoid(m->begin); 4145a02a946dSIlya Dryomov return -ENOMEM; 4146a02a946dSIlya Dryomov } 4147a02a946dSIlya Dryomov 4148a02a946dSIlya Dryomov ret = decode_hoid(&p, end, m->end); 4149a02a946dSIlya Dryomov if (ret) { 4150a02a946dSIlya Dryomov free_hoid(m->begin); 4151a02a946dSIlya Dryomov free_hoid(m->end); 4152a02a946dSIlya Dryomov return ret; 4153a02a946dSIlya Dryomov } 4154a02a946dSIlya Dryomov 4155a02a946dSIlya Dryomov return 0; 4156a02a946dSIlya Dryomov 4157a02a946dSIlya Dryomov e_inval: 4158a02a946dSIlya Dryomov return -EINVAL; 4159a02a946dSIlya Dryomov } 4160a02a946dSIlya Dryomov 4161a02a946dSIlya Dryomov static struct ceph_msg *create_backoff_message( 4162a02a946dSIlya Dryomov const struct ceph_osd_backoff *backoff, 4163a02a946dSIlya Dryomov u32 map_epoch) 4164a02a946dSIlya Dryomov { 4165a02a946dSIlya Dryomov struct ceph_msg *msg; 4166a02a946dSIlya Dryomov void *p, *end; 4167a02a946dSIlya Dryomov int msg_size; 4168a02a946dSIlya Dryomov 4169a02a946dSIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 4170a02a946dSIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 4171a02a946dSIlya Dryomov msg_size += 4 + 1 + 8; /* map_epoch, op, id */ 4172a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4173a02a946dSIlya Dryomov hoid_encoding_size(backoff->begin); 4174a02a946dSIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 4175a02a946dSIlya Dryomov hoid_encoding_size(backoff->end); 4176a02a946dSIlya Dryomov 4177a02a946dSIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_BACKOFF, msg_size, GFP_NOIO, true); 4178a02a946dSIlya Dryomov if (!msg) 4179a02a946dSIlya Dryomov return NULL; 4180a02a946dSIlya Dryomov 4181a02a946dSIlya Dryomov p = msg->front.iov_base; 4182a02a946dSIlya Dryomov end = p + msg->front_alloc_len; 4183a02a946dSIlya Dryomov 4184a02a946dSIlya Dryomov encode_spgid(&p, &backoff->spgid); 4185a02a946dSIlya Dryomov ceph_encode_32(&p, map_epoch); 4186a02a946dSIlya Dryomov ceph_encode_8(&p, CEPH_OSD_BACKOFF_OP_ACK_BLOCK); 4187a02a946dSIlya Dryomov ceph_encode_64(&p, backoff->id); 4188a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->begin); 4189a02a946dSIlya Dryomov encode_hoid(&p, end, backoff->end); 4190a02a946dSIlya Dryomov BUG_ON(p != end); 4191a02a946dSIlya Dryomov 4192a02a946dSIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 4193a02a946dSIlya Dryomov msg->hdr.version = cpu_to_le16(1); /* MOSDBackoff v1 */ 4194a02a946dSIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 4195a02a946dSIlya Dryomov 4196a02a946dSIlya Dryomov return msg; 4197a02a946dSIlya Dryomov } 4198a02a946dSIlya Dryomov 4199a02a946dSIlya Dryomov static void handle_backoff_block(struct ceph_osd *osd, struct MOSDBackoff *m) 4200a02a946dSIlya Dryomov { 4201a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4202a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4203a02a946dSIlya Dryomov struct ceph_msg *msg; 4204a02a946dSIlya Dryomov 4205a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4206a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4207a02a946dSIlya Dryomov 4208a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &m->spgid); 4209a02a946dSIlya Dryomov if (!spg) { 4210a02a946dSIlya Dryomov spg = alloc_spg_mapping(); 4211a02a946dSIlya Dryomov if (!spg) { 4212a02a946dSIlya Dryomov pr_err("%s failed to allocate spg\n", __func__); 4213a02a946dSIlya Dryomov return; 4214a02a946dSIlya Dryomov } 4215a02a946dSIlya Dryomov spg->spgid = m->spgid; /* struct */ 4216a02a946dSIlya Dryomov insert_spg_mapping(&osd->o_backoff_mappings, spg); 4217a02a946dSIlya Dryomov } 4218a02a946dSIlya Dryomov 4219a02a946dSIlya Dryomov backoff = alloc_backoff(); 4220a02a946dSIlya Dryomov if (!backoff) { 4221a02a946dSIlya Dryomov pr_err("%s failed to allocate backoff\n", __func__); 4222a02a946dSIlya Dryomov return; 4223a02a946dSIlya Dryomov } 4224a02a946dSIlya Dryomov backoff->spgid = m->spgid; /* struct */ 4225a02a946dSIlya Dryomov backoff->id = m->id; 4226a02a946dSIlya Dryomov backoff->begin = m->begin; 4227a02a946dSIlya Dryomov m->begin = NULL; /* backoff now owns this */ 4228a02a946dSIlya Dryomov backoff->end = m->end; 4229a02a946dSIlya Dryomov m->end = NULL; /* ditto */ 4230a02a946dSIlya Dryomov 4231a02a946dSIlya Dryomov insert_backoff(&spg->backoffs, backoff); 4232a02a946dSIlya Dryomov insert_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4233a02a946dSIlya Dryomov 4234a02a946dSIlya Dryomov /* 4235a02a946dSIlya Dryomov * Ack with original backoff's epoch so that the OSD can 4236a02a946dSIlya Dryomov * discard this if there was a PG split. 4237a02a946dSIlya Dryomov */ 4238a02a946dSIlya Dryomov msg = create_backoff_message(backoff, m->map_epoch); 4239a02a946dSIlya Dryomov if (!msg) { 4240a02a946dSIlya Dryomov pr_err("%s failed to allocate msg\n", __func__); 4241a02a946dSIlya Dryomov return; 4242a02a946dSIlya Dryomov } 4243a02a946dSIlya Dryomov ceph_con_send(&osd->o_con, msg); 4244a02a946dSIlya Dryomov } 4245a02a946dSIlya Dryomov 4246a02a946dSIlya Dryomov static bool target_contained_by(const struct ceph_osd_request_target *t, 4247a02a946dSIlya Dryomov const struct ceph_hobject_id *begin, 4248a02a946dSIlya Dryomov const struct ceph_hobject_id *end) 4249a02a946dSIlya Dryomov { 4250a02a946dSIlya Dryomov struct ceph_hobject_id hoid; 4251a02a946dSIlya Dryomov int cmp; 4252a02a946dSIlya Dryomov 4253a02a946dSIlya Dryomov hoid_fill_from_target(&hoid, t); 4254a02a946dSIlya Dryomov cmp = hoid_compare(&hoid, begin); 4255a02a946dSIlya Dryomov return !cmp || (cmp > 0 && hoid_compare(&hoid, end) < 0); 4256a02a946dSIlya Dryomov } 4257a02a946dSIlya Dryomov 4258a02a946dSIlya Dryomov static void handle_backoff_unblock(struct ceph_osd *osd, 4259a02a946dSIlya Dryomov const struct MOSDBackoff *m) 4260a02a946dSIlya Dryomov { 4261a02a946dSIlya Dryomov struct ceph_spg_mapping *spg; 4262a02a946dSIlya Dryomov struct ceph_osd_backoff *backoff; 4263a02a946dSIlya Dryomov struct rb_node *n; 4264a02a946dSIlya Dryomov 4265a02a946dSIlya Dryomov dout("%s osd%d spgid %llu.%xs%d id %llu\n", __func__, osd->o_osd, 4266a02a946dSIlya Dryomov m->spgid.pgid.pool, m->spgid.pgid.seed, m->spgid.shard, m->id); 4267a02a946dSIlya Dryomov 4268a02a946dSIlya Dryomov backoff = lookup_backoff_by_id(&osd->o_backoffs_by_id, m->id); 4269a02a946dSIlya Dryomov if (!backoff) { 4270a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu backoff dne\n", 4271a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4272a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4273a02a946dSIlya Dryomov return; 4274a02a946dSIlya Dryomov } 4275a02a946dSIlya Dryomov 4276a02a946dSIlya Dryomov if (hoid_compare(backoff->begin, m->begin) && 4277a02a946dSIlya Dryomov hoid_compare(backoff->end, m->end)) { 4278a02a946dSIlya Dryomov pr_err("%s osd%d spgid %llu.%xs%d id %llu bad range?\n", 4279a02a946dSIlya Dryomov __func__, osd->o_osd, m->spgid.pgid.pool, 4280a02a946dSIlya Dryomov m->spgid.pgid.seed, m->spgid.shard, m->id); 4281a02a946dSIlya Dryomov /* unblock it anyway... */ 4282a02a946dSIlya Dryomov } 4283a02a946dSIlya Dryomov 4284a02a946dSIlya Dryomov spg = lookup_spg_mapping(&osd->o_backoff_mappings, &backoff->spgid); 4285a02a946dSIlya Dryomov BUG_ON(!spg); 4286a02a946dSIlya Dryomov 4287a02a946dSIlya Dryomov erase_backoff(&spg->backoffs, backoff); 4288a02a946dSIlya Dryomov erase_backoff_by_id(&osd->o_backoffs_by_id, backoff); 4289a02a946dSIlya Dryomov free_backoff(backoff); 4290a02a946dSIlya Dryomov 4291a02a946dSIlya Dryomov if (RB_EMPTY_ROOT(&spg->backoffs)) { 4292a02a946dSIlya Dryomov erase_spg_mapping(&osd->o_backoff_mappings, spg); 4293a02a946dSIlya Dryomov free_spg_mapping(spg); 4294a02a946dSIlya Dryomov } 4295a02a946dSIlya Dryomov 4296a02a946dSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 4297a02a946dSIlya Dryomov struct ceph_osd_request *req = 4298a02a946dSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 4299a02a946dSIlya Dryomov 4300a02a946dSIlya Dryomov if (!ceph_spg_compare(&req->r_t.spgid, &m->spgid)) { 4301a02a946dSIlya Dryomov /* 4302a02a946dSIlya Dryomov * Match against @m, not @backoff -- the PG may 4303a02a946dSIlya Dryomov * have split on the OSD. 4304a02a946dSIlya Dryomov */ 4305a02a946dSIlya Dryomov if (target_contained_by(&req->r_t, m->begin, m->end)) { 4306a02a946dSIlya Dryomov /* 4307a02a946dSIlya Dryomov * If no other installed backoff applies, 4308a02a946dSIlya Dryomov * resend. 4309a02a946dSIlya Dryomov */ 4310a02a946dSIlya Dryomov send_request(req); 4311a02a946dSIlya Dryomov } 4312a02a946dSIlya Dryomov } 4313a02a946dSIlya Dryomov } 4314a02a946dSIlya Dryomov } 4315a02a946dSIlya Dryomov 4316a02a946dSIlya Dryomov static void handle_backoff(struct ceph_osd *osd, struct ceph_msg *msg) 4317a02a946dSIlya Dryomov { 4318a02a946dSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 4319a02a946dSIlya Dryomov struct MOSDBackoff m; 4320a02a946dSIlya Dryomov int ret; 4321a02a946dSIlya Dryomov 4322a02a946dSIlya Dryomov down_read(&osdc->lock); 4323a02a946dSIlya Dryomov if (!osd_registered(osd)) { 4324a02a946dSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 4325a02a946dSIlya Dryomov up_read(&osdc->lock); 4326a02a946dSIlya Dryomov return; 4327a02a946dSIlya Dryomov } 4328a02a946dSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 4329a02a946dSIlya Dryomov 4330a02a946dSIlya Dryomov mutex_lock(&osd->lock); 4331a02a946dSIlya Dryomov ret = decode_MOSDBackoff(msg, &m); 4332a02a946dSIlya Dryomov if (ret) { 4333a02a946dSIlya Dryomov pr_err("failed to decode MOSDBackoff: %d\n", ret); 4334a02a946dSIlya Dryomov ceph_msg_dump(msg); 4335a02a946dSIlya Dryomov goto out_unlock; 4336a02a946dSIlya Dryomov } 4337a02a946dSIlya Dryomov 4338a02a946dSIlya Dryomov switch (m.op) { 4339a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_BLOCK: 4340a02a946dSIlya Dryomov handle_backoff_block(osd, &m); 4341a02a946dSIlya Dryomov break; 4342a02a946dSIlya Dryomov case CEPH_OSD_BACKOFF_OP_UNBLOCK: 4343a02a946dSIlya Dryomov handle_backoff_unblock(osd, &m); 4344a02a946dSIlya Dryomov break; 4345a02a946dSIlya Dryomov default: 4346a02a946dSIlya Dryomov pr_err("%s osd%d unknown op %d\n", __func__, osd->o_osd, m.op); 4347a02a946dSIlya Dryomov } 4348a02a946dSIlya Dryomov 4349a02a946dSIlya Dryomov free_hoid(m.begin); 4350a02a946dSIlya Dryomov free_hoid(m.end); 4351a02a946dSIlya Dryomov 4352a02a946dSIlya Dryomov out_unlock: 4353a02a946dSIlya Dryomov mutex_unlock(&osd->lock); 4354a02a946dSIlya Dryomov up_read(&osdc->lock); 4355a02a946dSIlya Dryomov } 4356a02a946dSIlya Dryomov 43573d14c5d2SYehuda Sadeh /* 4358a40c4f10SYehuda Sadeh * Process osd watch notifications 4359a40c4f10SYehuda Sadeh */ 43603c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 43613c663bbdSAlex Elder struct ceph_msg *msg) 4362a40c4f10SYehuda Sadeh { 4363922dab61SIlya Dryomov void *p = msg->front.iov_base; 4364922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 4365922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4366922dab61SIlya Dryomov struct linger_work *lwork; 4367922dab61SIlya Dryomov u8 proto_ver, opcode; 4368922dab61SIlya Dryomov u64 cookie, notify_id; 4369922dab61SIlya Dryomov u64 notifier_id = 0; 437019079203SIlya Dryomov s32 return_code = 0; 4371922dab61SIlya Dryomov void *payload = NULL; 4372922dab61SIlya Dryomov u32 payload_len = 0; 4373a40c4f10SYehuda Sadeh 4374a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 4375a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 4376a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 4377922dab61SIlya Dryomov p += 8; /* skip ver */ 4378a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 4379a40c4f10SYehuda Sadeh 4380922dab61SIlya Dryomov if (proto_ver >= 1) { 4381922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 4382922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 4383922dab61SIlya Dryomov payload = p; 4384922dab61SIlya Dryomov p += payload_len; 4385a40c4f10SYehuda Sadeh } 4386a40c4f10SYehuda Sadeh 4387922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 438819079203SIlya Dryomov ceph_decode_32_safe(&p, end, return_code, bad); 4389922dab61SIlya Dryomov 4390922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 4391922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 4392922dab61SIlya Dryomov 4393922dab61SIlya Dryomov down_read(&osdc->lock); 4394922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 4395922dab61SIlya Dryomov if (!lreq) { 4396922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 4397922dab61SIlya Dryomov cookie); 4398922dab61SIlya Dryomov goto out_unlock_osdc; 4399922dab61SIlya Dryomov } 4400922dab61SIlya Dryomov 4401922dab61SIlya Dryomov mutex_lock(&lreq->lock); 440219079203SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, 440319079203SIlya Dryomov opcode, cookie, lreq, lreq->is_watch); 4404922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 4405922dab61SIlya Dryomov if (!lreq->last_error) { 4406922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 4407922dab61SIlya Dryomov queue_watch_error(lreq); 4408922dab61SIlya Dryomov } 440919079203SIlya Dryomov } else if (!lreq->is_watch) { 441019079203SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ 441119079203SIlya Dryomov if (lreq->notify_id && lreq->notify_id != notify_id) { 441219079203SIlya Dryomov dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, 441319079203SIlya Dryomov lreq->notify_id, notify_id); 441419079203SIlya Dryomov } else if (!completion_done(&lreq->notify_finish_wait)) { 441519079203SIlya Dryomov struct ceph_msg_data *data = 44160d9c1ab3SIlya Dryomov msg->num_data_items ? &msg->data[0] : NULL; 441719079203SIlya Dryomov 441819079203SIlya Dryomov if (data) { 441919079203SIlya Dryomov if (lreq->preply_pages) { 442019079203SIlya Dryomov WARN_ON(data->type != 442119079203SIlya Dryomov CEPH_MSG_DATA_PAGES); 442219079203SIlya Dryomov *lreq->preply_pages = data->pages; 442319079203SIlya Dryomov *lreq->preply_len = data->length; 442419079203SIlya Dryomov } else { 442519079203SIlya Dryomov ceph_release_page_vector(data->pages, 442619079203SIlya Dryomov calc_pages_for(0, data->length)); 442719079203SIlya Dryomov } 442819079203SIlya Dryomov } 442919079203SIlya Dryomov lreq->notify_finish_error = return_code; 443019079203SIlya Dryomov complete_all(&lreq->notify_finish_wait); 443119079203SIlya Dryomov } 4432922dab61SIlya Dryomov } else { 4433922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 4434922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 4435922dab61SIlya Dryomov if (!lwork) { 4436922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 4437922dab61SIlya Dryomov goto out_unlock_lreq; 4438922dab61SIlya Dryomov } 4439922dab61SIlya Dryomov 4440922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 4441922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 4442922dab61SIlya Dryomov lwork->notify.payload = payload; 4443922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 4444922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 4445922dab61SIlya Dryomov lwork_queue(lwork); 4446922dab61SIlya Dryomov } 4447922dab61SIlya Dryomov 4448922dab61SIlya Dryomov out_unlock_lreq: 4449922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 4450922dab61SIlya Dryomov out_unlock_osdc: 4451922dab61SIlya Dryomov up_read(&osdc->lock); 4452a40c4f10SYehuda Sadeh return; 4453a40c4f10SYehuda Sadeh 4454a40c4f10SYehuda Sadeh bad: 4455a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 4456a40c4f10SYehuda Sadeh } 4457a40c4f10SYehuda Sadeh 4458a40c4f10SYehuda Sadeh /* 44593d14c5d2SYehuda Sadeh * Register request, send initial attempt. 44603d14c5d2SYehuda Sadeh */ 44613d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 44623d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 44633d14c5d2SYehuda Sadeh bool nofail) 44643d14c5d2SYehuda Sadeh { 44655aea3dcdSIlya Dryomov down_read(&osdc->lock); 44665aea3dcdSIlya Dryomov submit_request(req, false); 44675aea3dcdSIlya Dryomov up_read(&osdc->lock); 44683d14c5d2SYehuda Sadeh 44695aea3dcdSIlya Dryomov return 0; 44703d14c5d2SYehuda Sadeh } 44713d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 44723d14c5d2SYehuda Sadeh 44733d14c5d2SYehuda Sadeh /* 4474c297eb42SIlya Dryomov * Unregister a registered request. The request is not completed: 4475c297eb42SIlya Dryomov * ->r_result isn't set and __complete_request() isn't called. 4476c9f9b93dSIlya Dryomov */ 4477c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 4478c9f9b93dSIlya Dryomov { 4479c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 4480c9f9b93dSIlya Dryomov 44815aea3dcdSIlya Dryomov down_write(&osdc->lock); 44825aea3dcdSIlya Dryomov if (req->r_osd) 44835aea3dcdSIlya Dryomov cancel_request(req); 44845aea3dcdSIlya Dryomov up_write(&osdc->lock); 4485c9f9b93dSIlya Dryomov } 4486c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 4487c9f9b93dSIlya Dryomov 4488c9f9b93dSIlya Dryomov /* 448942b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 449042b06965SIlya Dryomov */ 449142b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 449242b06965SIlya Dryomov unsigned long timeout) 449342b06965SIlya Dryomov { 449442b06965SIlya Dryomov long left; 449542b06965SIlya Dryomov 449642b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 44970e76abf2SYan, Zheng left = wait_for_completion_killable_timeout(&req->r_completion, 449842b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 449942b06965SIlya Dryomov if (left <= 0) { 450042b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 450142b06965SIlya Dryomov ceph_osdc_cancel_request(req); 450242b06965SIlya Dryomov } else { 450342b06965SIlya Dryomov left = req->r_result; /* completed */ 450442b06965SIlya Dryomov } 450542b06965SIlya Dryomov 450642b06965SIlya Dryomov return left; 450742b06965SIlya Dryomov } 450842b06965SIlya Dryomov 450942b06965SIlya Dryomov /* 45103d14c5d2SYehuda Sadeh * wait for a request to complete 45113d14c5d2SYehuda Sadeh */ 45123d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 45133d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 45143d14c5d2SYehuda Sadeh { 451542b06965SIlya Dryomov return wait_request_timeout(req, 0); 45163d14c5d2SYehuda Sadeh } 45173d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 45183d14c5d2SYehuda Sadeh 45193d14c5d2SYehuda Sadeh /* 45203d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 45213d14c5d2SYehuda Sadeh */ 45223d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 45233d14c5d2SYehuda Sadeh { 45245aea3dcdSIlya Dryomov struct rb_node *n, *p; 45255aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 45263d14c5d2SYehuda Sadeh 45275aea3dcdSIlya Dryomov again: 45285aea3dcdSIlya Dryomov down_read(&osdc->lock); 45295aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 45305aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 45315aea3dcdSIlya Dryomov 45325aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 45335aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 45345aea3dcdSIlya Dryomov struct ceph_osd_request *req = 45355aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 45365aea3dcdSIlya Dryomov 45373d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 45383d14c5d2SYehuda Sadeh break; 45393d14c5d2SYehuda Sadeh 45405aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 45413d14c5d2SYehuda Sadeh continue; 45423d14c5d2SYehuda Sadeh 45433d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 45445aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 45455aea3dcdSIlya Dryomov up_read(&osdc->lock); 45465aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 45475aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 4548b18b9550SIlya Dryomov wait_for_completion(&req->r_completion); 45493d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 45505aea3dcdSIlya Dryomov goto again; 45513d14c5d2SYehuda Sadeh } 45525aea3dcdSIlya Dryomov 45535aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 45545aea3dcdSIlya Dryomov } 45555aea3dcdSIlya Dryomov 45565aea3dcdSIlya Dryomov up_read(&osdc->lock); 45575aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 45583d14c5d2SYehuda Sadeh } 45593d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 45603d14c5d2SYehuda Sadeh 4561922dab61SIlya Dryomov static struct ceph_osd_request * 4562922dab61SIlya Dryomov alloc_linger_request(struct ceph_osd_linger_request *lreq) 4563922dab61SIlya Dryomov { 4564922dab61SIlya Dryomov struct ceph_osd_request *req; 4565922dab61SIlya Dryomov 4566922dab61SIlya Dryomov req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); 4567922dab61SIlya Dryomov if (!req) 4568922dab61SIlya Dryomov return NULL; 4569922dab61SIlya Dryomov 4570922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4571922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 4572922dab61SIlya Dryomov return req; 4573922dab61SIlya Dryomov } 4574922dab61SIlya Dryomov 457539e58c34SIlya Dryomov static struct ceph_osd_request * 457639e58c34SIlya Dryomov alloc_watch_request(struct ceph_osd_linger_request *lreq, u8 watch_opcode) 457739e58c34SIlya Dryomov { 457839e58c34SIlya Dryomov struct ceph_osd_request *req; 457939e58c34SIlya Dryomov 458039e58c34SIlya Dryomov req = alloc_linger_request(lreq); 458139e58c34SIlya Dryomov if (!req) 458239e58c34SIlya Dryomov return NULL; 458339e58c34SIlya Dryomov 458439e58c34SIlya Dryomov /* 458539e58c34SIlya Dryomov * Pass 0 for cookie because we don't know it yet, it will be 458639e58c34SIlya Dryomov * filled in by linger_submit(). 458739e58c34SIlya Dryomov */ 458839e58c34SIlya Dryomov osd_req_op_watch_init(req, 0, 0, watch_opcode); 458926f887e0SIlya Dryomov 459026f887e0SIlya Dryomov if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { 459126f887e0SIlya Dryomov ceph_osdc_put_request(req); 459226f887e0SIlya Dryomov return NULL; 459326f887e0SIlya Dryomov } 459426f887e0SIlya Dryomov 459539e58c34SIlya Dryomov return req; 459639e58c34SIlya Dryomov } 459739e58c34SIlya Dryomov 4598922dab61SIlya Dryomov /* 4599922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 4600922dab61SIlya Dryomov */ 4601922dab61SIlya Dryomov struct ceph_osd_linger_request * 4602922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 4603922dab61SIlya Dryomov struct ceph_object_id *oid, 4604922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4605922dab61SIlya Dryomov rados_watchcb2_t wcb, 4606922dab61SIlya Dryomov rados_watcherrcb_t errcb, 4607922dab61SIlya Dryomov void *data) 4608922dab61SIlya Dryomov { 4609922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 4610922dab61SIlya Dryomov int ret; 4611922dab61SIlya Dryomov 4612922dab61SIlya Dryomov lreq = linger_alloc(osdc); 4613922dab61SIlya Dryomov if (!lreq) 4614922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 4615922dab61SIlya Dryomov 461619079203SIlya Dryomov lreq->is_watch = true; 4617922dab61SIlya Dryomov lreq->wcb = wcb; 4618922dab61SIlya Dryomov lreq->errcb = errcb; 4619922dab61SIlya Dryomov lreq->data = data; 4620b07d3c4bSIlya Dryomov lreq->watch_valid_thru = jiffies; 4621922dab61SIlya Dryomov 4622922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 4623922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 462454ea0046SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE; 4625fac02ddfSArnd Bergmann ktime_get_real_ts64(&lreq->mtime); 4626922dab61SIlya Dryomov 462739e58c34SIlya Dryomov lreq->reg_req = alloc_watch_request(lreq, CEPH_OSD_WATCH_OP_WATCH); 4628922dab61SIlya Dryomov if (!lreq->reg_req) { 4629922dab61SIlya Dryomov ret = -ENOMEM; 4630922dab61SIlya Dryomov goto err_put_lreq; 4631922dab61SIlya Dryomov } 4632922dab61SIlya Dryomov 463339e58c34SIlya Dryomov lreq->ping_req = alloc_watch_request(lreq, CEPH_OSD_WATCH_OP_PING); 4634922dab61SIlya Dryomov if (!lreq->ping_req) { 4635922dab61SIlya Dryomov ret = -ENOMEM; 4636922dab61SIlya Dryomov goto err_put_lreq; 4637922dab61SIlya Dryomov } 4638922dab61SIlya Dryomov 463981c65213SIlya Dryomov linger_submit(lreq); 4640922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 4641922dab61SIlya Dryomov if (ret) { 4642922dab61SIlya Dryomov linger_cancel(lreq); 4643922dab61SIlya Dryomov goto err_put_lreq; 4644922dab61SIlya Dryomov } 4645922dab61SIlya Dryomov 4646922dab61SIlya Dryomov return lreq; 4647922dab61SIlya Dryomov 4648922dab61SIlya Dryomov err_put_lreq: 4649922dab61SIlya Dryomov linger_put(lreq); 4650922dab61SIlya Dryomov return ERR_PTR(ret); 4651922dab61SIlya Dryomov } 4652922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 4653922dab61SIlya Dryomov 4654922dab61SIlya Dryomov /* 4655922dab61SIlya Dryomov * Releases a ref. 4656922dab61SIlya Dryomov * 4657922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 4658922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 4659922dab61SIlya Dryomov * with mount_timeout"). 4660922dab61SIlya Dryomov */ 4661922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 4662922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 4663922dab61SIlya Dryomov { 4664922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 4665922dab61SIlya Dryomov struct ceph_osd_request *req; 4666922dab61SIlya Dryomov int ret; 4667922dab61SIlya Dryomov 4668922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4669922dab61SIlya Dryomov if (!req) 4670922dab61SIlya Dryomov return -ENOMEM; 4671922dab61SIlya Dryomov 4672922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 4673922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 467454ea0046SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE; 4675fac02ddfSArnd Bergmann ktime_get_real_ts64(&req->r_mtime); 4676922dab61SIlya Dryomov osd_req_op_watch_init(req, 0, lreq->linger_id, 4677922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_UNWATCH); 4678922dab61SIlya Dryomov 4679922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4680922dab61SIlya Dryomov if (ret) 4681922dab61SIlya Dryomov goto out_put_req; 4682922dab61SIlya Dryomov 4683922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 4684922dab61SIlya Dryomov linger_cancel(lreq); 4685922dab61SIlya Dryomov linger_put(lreq); 4686922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 4687922dab61SIlya Dryomov 4688922dab61SIlya Dryomov out_put_req: 4689922dab61SIlya Dryomov ceph_osdc_put_request(req); 4690922dab61SIlya Dryomov return ret; 4691922dab61SIlya Dryomov } 4692922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 4693922dab61SIlya Dryomov 4694922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 4695922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 46966d54228fSIlya Dryomov u32 payload_len) 4697922dab61SIlya Dryomov { 4698922dab61SIlya Dryomov struct ceph_osd_req_op *op; 4699922dab61SIlya Dryomov struct ceph_pagelist *pl; 4700922dab61SIlya Dryomov int ret; 4701922dab61SIlya Dryomov 4702922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 4703922dab61SIlya Dryomov 470433165d47SIlya Dryomov pl = ceph_pagelist_alloc(GFP_NOIO); 4705922dab61SIlya Dryomov if (!pl) 4706922dab61SIlya Dryomov return -ENOMEM; 4707922dab61SIlya Dryomov 4708922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 4709922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 4710922dab61SIlya Dryomov if (payload) { 4711922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 4712922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 4713922dab61SIlya Dryomov } else { 4714922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 4715922dab61SIlya Dryomov } 4716922dab61SIlya Dryomov if (ret) { 4717922dab61SIlya Dryomov ceph_pagelist_release(pl); 4718922dab61SIlya Dryomov return -ENOMEM; 4719922dab61SIlya Dryomov } 4720922dab61SIlya Dryomov 4721922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 4722922dab61SIlya Dryomov op->indata_len = pl->length; 4723922dab61SIlya Dryomov return 0; 4724922dab61SIlya Dryomov } 4725922dab61SIlya Dryomov 4726922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 4727922dab61SIlya Dryomov struct ceph_object_id *oid, 4728922dab61SIlya Dryomov struct ceph_object_locator *oloc, 4729922dab61SIlya Dryomov u64 notify_id, 4730922dab61SIlya Dryomov u64 cookie, 4731922dab61SIlya Dryomov void *payload, 47326d54228fSIlya Dryomov u32 payload_len) 4733922dab61SIlya Dryomov { 4734922dab61SIlya Dryomov struct ceph_osd_request *req; 4735922dab61SIlya Dryomov int ret; 4736922dab61SIlya Dryomov 4737922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4738922dab61SIlya Dryomov if (!req) 4739922dab61SIlya Dryomov return -ENOMEM; 4740922dab61SIlya Dryomov 4741922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 4742922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 4743922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 4744922dab61SIlya Dryomov 474526f887e0SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 474626f887e0SIlya Dryomov payload_len); 4747922dab61SIlya Dryomov if (ret) 4748922dab61SIlya Dryomov goto out_put_req; 4749922dab61SIlya Dryomov 475026f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4751922dab61SIlya Dryomov if (ret) 4752922dab61SIlya Dryomov goto out_put_req; 4753922dab61SIlya Dryomov 4754922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 4755922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 4756922dab61SIlya Dryomov 4757922dab61SIlya Dryomov out_put_req: 4758922dab61SIlya Dryomov ceph_osdc_put_request(req); 4759922dab61SIlya Dryomov return ret; 4760922dab61SIlya Dryomov } 4761922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 4762922dab61SIlya Dryomov 476319079203SIlya Dryomov static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, 476419079203SIlya Dryomov u64 cookie, u32 prot_ver, u32 timeout, 47656d54228fSIlya Dryomov void *payload, u32 payload_len) 476619079203SIlya Dryomov { 476719079203SIlya Dryomov struct ceph_osd_req_op *op; 476819079203SIlya Dryomov struct ceph_pagelist *pl; 476919079203SIlya Dryomov int ret; 477019079203SIlya Dryomov 477119079203SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); 477219079203SIlya Dryomov op->notify.cookie = cookie; 477319079203SIlya Dryomov 477433165d47SIlya Dryomov pl = ceph_pagelist_alloc(GFP_NOIO); 477519079203SIlya Dryomov if (!pl) 477619079203SIlya Dryomov return -ENOMEM; 477719079203SIlya Dryomov 477819079203SIlya Dryomov ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ 477919079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, timeout); 478019079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 478119079203SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 478219079203SIlya Dryomov if (ret) { 478319079203SIlya Dryomov ceph_pagelist_release(pl); 478419079203SIlya Dryomov return -ENOMEM; 478519079203SIlya Dryomov } 478619079203SIlya Dryomov 478719079203SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify.request_data, pl); 478819079203SIlya Dryomov op->indata_len = pl->length; 478919079203SIlya Dryomov return 0; 479019079203SIlya Dryomov } 479119079203SIlya Dryomov 479219079203SIlya Dryomov /* 479319079203SIlya Dryomov * @timeout: in seconds 479419079203SIlya Dryomov * 479519079203SIlya Dryomov * @preply_{pages,len} are initialized both on success and error. 479619079203SIlya Dryomov * The caller is responsible for: 479719079203SIlya Dryomov * 479819079203SIlya Dryomov * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) 479919079203SIlya Dryomov */ 480019079203SIlya Dryomov int ceph_osdc_notify(struct ceph_osd_client *osdc, 480119079203SIlya Dryomov struct ceph_object_id *oid, 480219079203SIlya Dryomov struct ceph_object_locator *oloc, 480319079203SIlya Dryomov void *payload, 48046d54228fSIlya Dryomov u32 payload_len, 480519079203SIlya Dryomov u32 timeout, 480619079203SIlya Dryomov struct page ***preply_pages, 480719079203SIlya Dryomov size_t *preply_len) 480819079203SIlya Dryomov { 480919079203SIlya Dryomov struct ceph_osd_linger_request *lreq; 481019079203SIlya Dryomov struct page **pages; 481119079203SIlya Dryomov int ret; 481219079203SIlya Dryomov 481319079203SIlya Dryomov WARN_ON(!timeout); 481419079203SIlya Dryomov if (preply_pages) { 481519079203SIlya Dryomov *preply_pages = NULL; 481619079203SIlya Dryomov *preply_len = 0; 481719079203SIlya Dryomov } 481819079203SIlya Dryomov 481919079203SIlya Dryomov lreq = linger_alloc(osdc); 482019079203SIlya Dryomov if (!lreq) 482119079203SIlya Dryomov return -ENOMEM; 482219079203SIlya Dryomov 482319079203SIlya Dryomov lreq->preply_pages = preply_pages; 482419079203SIlya Dryomov lreq->preply_len = preply_len; 482519079203SIlya Dryomov 482619079203SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 482719079203SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 482819079203SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_READ; 482919079203SIlya Dryomov 483019079203SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 483119079203SIlya Dryomov if (!lreq->reg_req) { 483219079203SIlya Dryomov ret = -ENOMEM; 483319079203SIlya Dryomov goto out_put_lreq; 483419079203SIlya Dryomov } 483519079203SIlya Dryomov 483681c65213SIlya Dryomov /* 483781c65213SIlya Dryomov * Pass 0 for cookie because we don't know it yet, it will be 483881c65213SIlya Dryomov * filled in by linger_submit(). 483981c65213SIlya Dryomov */ 484081c65213SIlya Dryomov ret = osd_req_op_notify_init(lreq->reg_req, 0, 0, 1, timeout, 484181c65213SIlya Dryomov payload, payload_len); 484281c65213SIlya Dryomov if (ret) 484381c65213SIlya Dryomov goto out_put_lreq; 484481c65213SIlya Dryomov 484519079203SIlya Dryomov /* for notify_id */ 484619079203SIlya Dryomov pages = ceph_alloc_page_vector(1, GFP_NOIO); 484719079203SIlya Dryomov if (IS_ERR(pages)) { 484819079203SIlya Dryomov ret = PTR_ERR(pages); 484919079203SIlya Dryomov goto out_put_lreq; 485019079203SIlya Dryomov } 485119079203SIlya Dryomov ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, 485219079203SIlya Dryomov response_data), 485319079203SIlya Dryomov pages, PAGE_SIZE, 0, false, true); 485419079203SIlya Dryomov 485526f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(lreq->reg_req, GFP_NOIO); 485626f887e0SIlya Dryomov if (ret) 485726f887e0SIlya Dryomov goto out_put_lreq; 485826f887e0SIlya Dryomov 485981c65213SIlya Dryomov linger_submit(lreq); 486019079203SIlya Dryomov ret = linger_reg_commit_wait(lreq); 486119079203SIlya Dryomov if (!ret) 486219079203SIlya Dryomov ret = linger_notify_finish_wait(lreq); 486319079203SIlya Dryomov else 486419079203SIlya Dryomov dout("lreq %p failed to initiate notify %d\n", lreq, ret); 486519079203SIlya Dryomov 486619079203SIlya Dryomov linger_cancel(lreq); 486719079203SIlya Dryomov out_put_lreq: 486819079203SIlya Dryomov linger_put(lreq); 486919079203SIlya Dryomov return ret; 487019079203SIlya Dryomov } 487119079203SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify); 487219079203SIlya Dryomov 48733d14c5d2SYehuda Sadeh /* 4874b07d3c4bSIlya Dryomov * Return the number of milliseconds since the watch was last 4875b07d3c4bSIlya Dryomov * confirmed, or an error. If there is an error, the watch is no 4876b07d3c4bSIlya Dryomov * longer valid, and should be destroyed with ceph_osdc_unwatch(). 4877b07d3c4bSIlya Dryomov */ 4878b07d3c4bSIlya Dryomov int ceph_osdc_watch_check(struct ceph_osd_client *osdc, 4879b07d3c4bSIlya Dryomov struct ceph_osd_linger_request *lreq) 4880b07d3c4bSIlya Dryomov { 4881b07d3c4bSIlya Dryomov unsigned long stamp, age; 4882b07d3c4bSIlya Dryomov int ret; 4883b07d3c4bSIlya Dryomov 4884b07d3c4bSIlya Dryomov down_read(&osdc->lock); 4885b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 4886b07d3c4bSIlya Dryomov stamp = lreq->watch_valid_thru; 4887b07d3c4bSIlya Dryomov if (!list_empty(&lreq->pending_lworks)) { 4888b07d3c4bSIlya Dryomov struct linger_work *lwork = 4889b07d3c4bSIlya Dryomov list_first_entry(&lreq->pending_lworks, 4890b07d3c4bSIlya Dryomov struct linger_work, 4891b07d3c4bSIlya Dryomov pending_item); 4892b07d3c4bSIlya Dryomov 4893b07d3c4bSIlya Dryomov if (time_before(lwork->queued_stamp, stamp)) 4894b07d3c4bSIlya Dryomov stamp = lwork->queued_stamp; 4895b07d3c4bSIlya Dryomov } 4896b07d3c4bSIlya Dryomov age = jiffies - stamp; 4897b07d3c4bSIlya Dryomov dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, 4898b07d3c4bSIlya Dryomov lreq, lreq->linger_id, age, lreq->last_error); 4899b07d3c4bSIlya Dryomov /* we are truncating to msecs, so return a safe upper bound */ 4900b07d3c4bSIlya Dryomov ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); 4901b07d3c4bSIlya Dryomov 4902b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 4903b07d3c4bSIlya Dryomov up_read(&osdc->lock); 4904b07d3c4bSIlya Dryomov return ret; 4905b07d3c4bSIlya Dryomov } 4906b07d3c4bSIlya Dryomov 4907a4ed38d7SDouglas Fuller static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) 4908a4ed38d7SDouglas Fuller { 4909a4ed38d7SDouglas Fuller u8 struct_v; 4910a4ed38d7SDouglas Fuller u32 struct_len; 4911a4ed38d7SDouglas Fuller int ret; 4912a4ed38d7SDouglas Fuller 4913a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 2, "watch_item_t", 4914a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4915a4ed38d7SDouglas Fuller if (ret) 491651fc7ab4SJeff Layton goto bad; 4917a4ed38d7SDouglas Fuller 491851fc7ab4SJeff Layton ret = -EINVAL; 491951fc7ab4SJeff Layton ceph_decode_copy_safe(p, end, &item->name, sizeof(item->name), bad); 492051fc7ab4SJeff Layton ceph_decode_64_safe(p, end, item->cookie, bad); 492151fc7ab4SJeff Layton ceph_decode_skip_32(p, end, bad); /* skip timeout seconds */ 492251fc7ab4SJeff Layton 4923a4ed38d7SDouglas Fuller if (struct_v >= 2) { 492451fc7ab4SJeff Layton ret = ceph_decode_entity_addr(p, end, &item->addr); 492551fc7ab4SJeff Layton if (ret) 492651fc7ab4SJeff Layton goto bad; 492751fc7ab4SJeff Layton } else { 492851fc7ab4SJeff Layton ret = 0; 4929a4ed38d7SDouglas Fuller } 4930a4ed38d7SDouglas Fuller 4931a4ed38d7SDouglas Fuller dout("%s %s%llu cookie %llu addr %s\n", __func__, 4932a4ed38d7SDouglas Fuller ENTITY_NAME(item->name), item->cookie, 4933b726ec97SJeff Layton ceph_pr_addr(&item->addr)); 493451fc7ab4SJeff Layton bad: 493551fc7ab4SJeff Layton return ret; 4936a4ed38d7SDouglas Fuller } 4937a4ed38d7SDouglas Fuller 4938a4ed38d7SDouglas Fuller static int decode_watchers(void **p, void *end, 4939a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4940a4ed38d7SDouglas Fuller u32 *num_watchers) 4941a4ed38d7SDouglas Fuller { 4942a4ed38d7SDouglas Fuller u8 struct_v; 4943a4ed38d7SDouglas Fuller u32 struct_len; 4944a4ed38d7SDouglas Fuller int i; 4945a4ed38d7SDouglas Fuller int ret; 4946a4ed38d7SDouglas Fuller 4947a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t", 4948a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4949a4ed38d7SDouglas Fuller if (ret) 4950a4ed38d7SDouglas Fuller return ret; 4951a4ed38d7SDouglas Fuller 4952a4ed38d7SDouglas Fuller *num_watchers = ceph_decode_32(p); 4953a4ed38d7SDouglas Fuller *watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO); 4954a4ed38d7SDouglas Fuller if (!*watchers) 4955a4ed38d7SDouglas Fuller return -ENOMEM; 4956a4ed38d7SDouglas Fuller 4957a4ed38d7SDouglas Fuller for (i = 0; i < *num_watchers; i++) { 4958a4ed38d7SDouglas Fuller ret = decode_watcher(p, end, *watchers + i); 4959a4ed38d7SDouglas Fuller if (ret) { 4960a4ed38d7SDouglas Fuller kfree(*watchers); 4961a4ed38d7SDouglas Fuller return ret; 4962a4ed38d7SDouglas Fuller } 4963a4ed38d7SDouglas Fuller } 4964a4ed38d7SDouglas Fuller 4965a4ed38d7SDouglas Fuller return 0; 4966a4ed38d7SDouglas Fuller } 4967a4ed38d7SDouglas Fuller 4968a4ed38d7SDouglas Fuller /* 4969a4ed38d7SDouglas Fuller * On success, the caller is responsible for: 4970a4ed38d7SDouglas Fuller * 4971a4ed38d7SDouglas Fuller * kfree(watchers); 4972a4ed38d7SDouglas Fuller */ 4973a4ed38d7SDouglas Fuller int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, 4974a4ed38d7SDouglas Fuller struct ceph_object_id *oid, 4975a4ed38d7SDouglas Fuller struct ceph_object_locator *oloc, 4976a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4977a4ed38d7SDouglas Fuller u32 *num_watchers) 4978a4ed38d7SDouglas Fuller { 4979a4ed38d7SDouglas Fuller struct ceph_osd_request *req; 4980a4ed38d7SDouglas Fuller struct page **pages; 4981a4ed38d7SDouglas Fuller int ret; 4982a4ed38d7SDouglas Fuller 4983a4ed38d7SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4984a4ed38d7SDouglas Fuller if (!req) 4985a4ed38d7SDouglas Fuller return -ENOMEM; 4986a4ed38d7SDouglas Fuller 4987a4ed38d7SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 4988a4ed38d7SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 4989a4ed38d7SDouglas Fuller req->r_flags = CEPH_OSD_FLAG_READ; 4990a4ed38d7SDouglas Fuller 4991a4ed38d7SDouglas Fuller pages = ceph_alloc_page_vector(1, GFP_NOIO); 4992a4ed38d7SDouglas Fuller if (IS_ERR(pages)) { 4993a4ed38d7SDouglas Fuller ret = PTR_ERR(pages); 4994a4ed38d7SDouglas Fuller goto out_put_req; 4995a4ed38d7SDouglas Fuller } 4996a4ed38d7SDouglas Fuller 4997a4ed38d7SDouglas Fuller osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0); 4998a4ed38d7SDouglas Fuller ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers, 4999a4ed38d7SDouglas Fuller response_data), 5000a4ed38d7SDouglas Fuller pages, PAGE_SIZE, 0, false, true); 5001a4ed38d7SDouglas Fuller 500226f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 500326f887e0SIlya Dryomov if (ret) 500426f887e0SIlya Dryomov goto out_put_req; 500526f887e0SIlya Dryomov 5006a4ed38d7SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 5007a4ed38d7SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 5008a4ed38d7SDouglas Fuller if (ret >= 0) { 5009a4ed38d7SDouglas Fuller void *p = page_address(pages[0]); 5010a4ed38d7SDouglas Fuller void *const end = p + req->r_ops[0].outdata_len; 5011a4ed38d7SDouglas Fuller 5012a4ed38d7SDouglas Fuller ret = decode_watchers(&p, end, watchers, num_watchers); 5013a4ed38d7SDouglas Fuller } 5014a4ed38d7SDouglas Fuller 5015a4ed38d7SDouglas Fuller out_put_req: 5016a4ed38d7SDouglas Fuller ceph_osdc_put_request(req); 5017a4ed38d7SDouglas Fuller return ret; 5018a4ed38d7SDouglas Fuller } 5019a4ed38d7SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_list_watchers); 5020a4ed38d7SDouglas Fuller 5021b07d3c4bSIlya Dryomov /* 5022dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 5023dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 5024dd935f44SJosh Durgin */ 5025f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 5026dd935f44SJosh Durgin { 502799d16943SIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 5028dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 5029dd935f44SJosh Durgin } 5030dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 5031dd935f44SJosh Durgin 50327cca78c9SIlya Dryomov void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) 50337cca78c9SIlya Dryomov { 50347cca78c9SIlya Dryomov down_read(&osdc->lock); 50357cca78c9SIlya Dryomov maybe_request_map(osdc); 50367cca78c9SIlya Dryomov up_read(&osdc->lock); 50377cca78c9SIlya Dryomov } 50387cca78c9SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_maybe_request_map); 5039dd935f44SJosh Durgin 5040dd935f44SJosh Durgin /* 5041428a7158SDouglas Fuller * Execute an OSD class method on an object. 5042428a7158SDouglas Fuller * 5043428a7158SDouglas Fuller * @flags: CEPH_OSD_FLAG_* 50442544a020SIlya Dryomov * @resp_len: in/out param for reply length 5045428a7158SDouglas Fuller */ 5046428a7158SDouglas Fuller int ceph_osdc_call(struct ceph_osd_client *osdc, 5047428a7158SDouglas Fuller struct ceph_object_id *oid, 5048428a7158SDouglas Fuller struct ceph_object_locator *oloc, 5049428a7158SDouglas Fuller const char *class, const char *method, 5050428a7158SDouglas Fuller unsigned int flags, 5051428a7158SDouglas Fuller struct page *req_page, size_t req_len, 505268ada915SIlya Dryomov struct page **resp_pages, size_t *resp_len) 5053428a7158SDouglas Fuller { 5054428a7158SDouglas Fuller struct ceph_osd_request *req; 5055428a7158SDouglas Fuller int ret; 5056428a7158SDouglas Fuller 505768ada915SIlya Dryomov if (req_len > PAGE_SIZE) 50582544a020SIlya Dryomov return -E2BIG; 50592544a020SIlya Dryomov 5060428a7158SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 5061428a7158SDouglas Fuller if (!req) 5062428a7158SDouglas Fuller return -ENOMEM; 5063428a7158SDouglas Fuller 5064428a7158SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 5065428a7158SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 5066428a7158SDouglas Fuller req->r_flags = flags; 5067428a7158SDouglas Fuller 506824639ce5SIlya Dryomov ret = osd_req_op_cls_init(req, 0, class, method); 5069fe943d50SChengguang Xu if (ret) 5070fe943d50SChengguang Xu goto out_put_req; 5071fe943d50SChengguang Xu 5072428a7158SDouglas Fuller if (req_page) 5073428a7158SDouglas Fuller osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len, 5074428a7158SDouglas Fuller 0, false, false); 507568ada915SIlya Dryomov if (resp_pages) 507668ada915SIlya Dryomov osd_req_op_cls_response_data_pages(req, 0, resp_pages, 50772544a020SIlya Dryomov *resp_len, 0, false, false); 5078428a7158SDouglas Fuller 507926f887e0SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 508026f887e0SIlya Dryomov if (ret) 508126f887e0SIlya Dryomov goto out_put_req; 508226f887e0SIlya Dryomov 5083428a7158SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 5084428a7158SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 5085428a7158SDouglas Fuller if (ret >= 0) { 5086428a7158SDouglas Fuller ret = req->r_ops[0].rval; 508768ada915SIlya Dryomov if (resp_pages) 5088428a7158SDouglas Fuller *resp_len = req->r_ops[0].outdata_len; 5089428a7158SDouglas Fuller } 5090428a7158SDouglas Fuller 5091428a7158SDouglas Fuller out_put_req: 5092428a7158SDouglas Fuller ceph_osdc_put_request(req); 5093428a7158SDouglas Fuller return ret; 5094428a7158SDouglas Fuller } 5095428a7158SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_call); 5096428a7158SDouglas Fuller 5097428a7158SDouglas Fuller /* 5098120a75eaSYan, Zheng * reset all osd connections 5099120a75eaSYan, Zheng */ 5100120a75eaSYan, Zheng void ceph_osdc_reopen_osds(struct ceph_osd_client *osdc) 5101120a75eaSYan, Zheng { 5102120a75eaSYan, Zheng struct rb_node *n; 5103120a75eaSYan, Zheng 5104120a75eaSYan, Zheng down_write(&osdc->lock); 5105120a75eaSYan, Zheng for (n = rb_first(&osdc->osds); n; ) { 5106120a75eaSYan, Zheng struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 5107120a75eaSYan, Zheng 5108120a75eaSYan, Zheng n = rb_next(n); 5109120a75eaSYan, Zheng if (!reopen_osd(osd)) 5110120a75eaSYan, Zheng kick_osd_requests(osd); 5111120a75eaSYan, Zheng } 5112120a75eaSYan, Zheng up_write(&osdc->lock); 5113120a75eaSYan, Zheng } 5114120a75eaSYan, Zheng 5115120a75eaSYan, Zheng /* 51163d14c5d2SYehuda Sadeh * init, shutdown 51173d14c5d2SYehuda Sadeh */ 51183d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 51193d14c5d2SYehuda Sadeh { 51203d14c5d2SYehuda Sadeh int err; 51213d14c5d2SYehuda Sadeh 51223d14c5d2SYehuda Sadeh dout("init\n"); 51233d14c5d2SYehuda Sadeh osdc->client = client; 51245aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 51253d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 51263d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 51279dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 51285aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 51295aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 51305aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 5131264048afSIlya Dryomov osdc->last_linger_id = CEPH_LINGER_ID_START; 5132922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 51334609245eSIlya Dryomov osdc->map_checks = RB_ROOT; 51344609245eSIlya Dryomov osdc->linger_map_checks = RB_ROOT; 51353d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 51363d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 51373d14c5d2SYehuda Sadeh 51383d14c5d2SYehuda Sadeh err = -ENOMEM; 5139e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 5140e5253a7bSIlya Dryomov if (!osdc->osdmap) 5141e5253a7bSIlya Dryomov goto out; 5142e5253a7bSIlya Dryomov 51439e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 51449e767adbSIlya Dryomov ceph_osd_request_cache); 51453d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 5146e5253a7bSIlya Dryomov goto out_map; 51473d14c5d2SYehuda Sadeh 5148d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 51490d9c1ab3SIlya Dryomov PAGE_SIZE, CEPH_OSD_SLAB_OPS, 10, "osd_op"); 51503d14c5d2SYehuda Sadeh if (err < 0) 51513d14c5d2SYehuda Sadeh goto out_mempool; 5152d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 51530d9c1ab3SIlya Dryomov PAGE_SIZE, CEPH_OSD_SLAB_OPS, 10, 51540d9c1ab3SIlya Dryomov "osd_op_reply"); 51553d14c5d2SYehuda Sadeh if (err < 0) 51563d14c5d2SYehuda Sadeh goto out_msgpool; 5157a40c4f10SYehuda Sadeh 5158dbcae088SDan Carpenter err = -ENOMEM; 5159a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 5160dbcae088SDan Carpenter if (!osdc->notify_wq) 5161c172ec5cSIlya Dryomov goto out_msgpool_reply; 5162c172ec5cSIlya Dryomov 516388bc1922SIlya Dryomov osdc->completion_wq = create_singlethread_workqueue("ceph-completion"); 516488bc1922SIlya Dryomov if (!osdc->completion_wq) 516588bc1922SIlya Dryomov goto out_notify_wq; 516688bc1922SIlya Dryomov 5167fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 5168fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 5169b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 5170b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 5171b37ee1b9SIlya Dryomov 51723d14c5d2SYehuda Sadeh return 0; 51733d14c5d2SYehuda Sadeh 517488bc1922SIlya Dryomov out_notify_wq: 517588bc1922SIlya Dryomov destroy_workqueue(osdc->notify_wq); 5176c172ec5cSIlya Dryomov out_msgpool_reply: 5177c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 51783d14c5d2SYehuda Sadeh out_msgpool: 51793d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 51803d14c5d2SYehuda Sadeh out_mempool: 51813d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 5182e5253a7bSIlya Dryomov out_map: 5183e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 51843d14c5d2SYehuda Sadeh out: 51853d14c5d2SYehuda Sadeh return err; 51863d14c5d2SYehuda Sadeh } 51873d14c5d2SYehuda Sadeh 51883d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 51893d14c5d2SYehuda Sadeh { 519088bc1922SIlya Dryomov destroy_workqueue(osdc->completion_wq); 5191a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 51923d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 51933d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 519442a2c09fSIlya Dryomov 51955aea3dcdSIlya Dryomov down_write(&osdc->lock); 519642a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 519742a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 519842a2c09fSIlya Dryomov struct ceph_osd, o_node); 51995aea3dcdSIlya Dryomov close_osd(osd); 520042a2c09fSIlya Dryomov } 52015aea3dcdSIlya Dryomov up_write(&osdc->lock); 520202113a0fSElena Reshetova WARN_ON(refcount_read(&osdc->homeless_osd.o_ref) != 1); 52035aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 52045aea3dcdSIlya Dryomov 52055aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 5206922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 52074609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); 52084609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); 52095aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 52105aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 521142a2c09fSIlya Dryomov 52123d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 52133d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 52143d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 52153d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 52163d14c5d2SYehuda Sadeh } 52173d14c5d2SYehuda Sadeh 52183d14c5d2SYehuda Sadeh /* 52193d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 52203d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 52213d14c5d2SYehuda Sadeh */ 52223d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 52233d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 52243d14c5d2SYehuda Sadeh u64 off, u64 *plen, 52253d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 5226b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 52273d14c5d2SYehuda Sadeh { 52283d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 52293d14c5d2SYehuda Sadeh int rc = 0; 52303d14c5d2SYehuda Sadeh 52313d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 52323d14c5d2SYehuda Sadeh vino.snap, off, *plen); 5233715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 52343d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 5235acead002SAlex Elder NULL, truncate_seq, truncate_size, 5236153e5167SAlex Elder false); 52376816282dSSage Weil if (IS_ERR(req)) 52386816282dSSage Weil return PTR_ERR(req); 52393d14c5d2SYehuda Sadeh 52403d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 5241406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 5242a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 52433d14c5d2SYehuda Sadeh 5244e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 524543bfe5deSAlex Elder off, *plen, *plen, page_align); 52463d14c5d2SYehuda Sadeh 52473d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 52483d14c5d2SYehuda Sadeh if (!rc) 52493d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 52503d14c5d2SYehuda Sadeh 52513d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 52523d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 52533d14c5d2SYehuda Sadeh return rc; 52543d14c5d2SYehuda Sadeh } 52553d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 52563d14c5d2SYehuda Sadeh 52573d14c5d2SYehuda Sadeh /* 52583d14c5d2SYehuda Sadeh * do a synchronous write on N pages 52593d14c5d2SYehuda Sadeh */ 52603d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 52613d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 52623d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 52633d14c5d2SYehuda Sadeh u64 off, u64 len, 52643d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 5265fac02ddfSArnd Bergmann struct timespec64 *mtime, 526624808826SAlex Elder struct page **pages, int num_pages) 52673d14c5d2SYehuda Sadeh { 52683d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 52693d14c5d2SYehuda Sadeh int rc = 0; 5270b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 52713d14c5d2SYehuda Sadeh 5272715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 527354ea0046SIlya Dryomov CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE, 5274acead002SAlex Elder snapc, truncate_seq, truncate_size, 5275153e5167SAlex Elder true); 52766816282dSSage Weil if (IS_ERR(req)) 52776816282dSSage Weil return PTR_ERR(req); 52783d14c5d2SYehuda Sadeh 52793d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 5280406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 528143bfe5deSAlex Elder false, false); 528243bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 52833d14c5d2SYehuda Sadeh 5284bb873b53SIlya Dryomov req->r_mtime = *mtime; 528587f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 52863d14c5d2SYehuda Sadeh if (!rc) 52873d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 52883d14c5d2SYehuda Sadeh 52893d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 52903d14c5d2SYehuda Sadeh if (rc == 0) 52913d14c5d2SYehuda Sadeh rc = len; 52923d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 52933d14c5d2SYehuda Sadeh return rc; 52943d14c5d2SYehuda Sadeh } 52953d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 52963d14c5d2SYehuda Sadeh 529723ddf9beSLuis Henriques static int osd_req_op_copy_from_init(struct ceph_osd_request *req, 529823ddf9beSLuis Henriques u64 src_snapid, u64 src_version, 529923ddf9beSLuis Henriques struct ceph_object_id *src_oid, 530023ddf9beSLuis Henriques struct ceph_object_locator *src_oloc, 530123ddf9beSLuis Henriques u32 src_fadvise_flags, 530223ddf9beSLuis Henriques u32 dst_fadvise_flags, 530323ddf9beSLuis Henriques u8 copy_from_flags) 530423ddf9beSLuis Henriques { 530523ddf9beSLuis Henriques struct ceph_osd_req_op *op; 530623ddf9beSLuis Henriques struct page **pages; 530723ddf9beSLuis Henriques void *p, *end; 530823ddf9beSLuis Henriques 530923ddf9beSLuis Henriques pages = ceph_alloc_page_vector(1, GFP_KERNEL); 531023ddf9beSLuis Henriques if (IS_ERR(pages)) 531123ddf9beSLuis Henriques return PTR_ERR(pages); 531223ddf9beSLuis Henriques 531323ddf9beSLuis Henriques op = _osd_req_op_init(req, 0, CEPH_OSD_OP_COPY_FROM, dst_fadvise_flags); 531423ddf9beSLuis Henriques op->copy_from.snapid = src_snapid; 531523ddf9beSLuis Henriques op->copy_from.src_version = src_version; 531623ddf9beSLuis Henriques op->copy_from.flags = copy_from_flags; 531723ddf9beSLuis Henriques op->copy_from.src_fadvise_flags = src_fadvise_flags; 531823ddf9beSLuis Henriques 531923ddf9beSLuis Henriques p = page_address(pages[0]); 532023ddf9beSLuis Henriques end = p + PAGE_SIZE; 532123ddf9beSLuis Henriques ceph_encode_string(&p, end, src_oid->name, src_oid->name_len); 532223ddf9beSLuis Henriques encode_oloc(&p, end, src_oloc); 532323ddf9beSLuis Henriques op->indata_len = PAGE_SIZE - (end - p); 532423ddf9beSLuis Henriques 532523ddf9beSLuis Henriques ceph_osd_data_pages_init(&op->copy_from.osd_data, pages, 532623ddf9beSLuis Henriques op->indata_len, 0, false, true); 532723ddf9beSLuis Henriques return 0; 532823ddf9beSLuis Henriques } 532923ddf9beSLuis Henriques 533023ddf9beSLuis Henriques int ceph_osdc_copy_from(struct ceph_osd_client *osdc, 533123ddf9beSLuis Henriques u64 src_snapid, u64 src_version, 533223ddf9beSLuis Henriques struct ceph_object_id *src_oid, 533323ddf9beSLuis Henriques struct ceph_object_locator *src_oloc, 533423ddf9beSLuis Henriques u32 src_fadvise_flags, 533523ddf9beSLuis Henriques struct ceph_object_id *dst_oid, 533623ddf9beSLuis Henriques struct ceph_object_locator *dst_oloc, 533723ddf9beSLuis Henriques u32 dst_fadvise_flags, 533823ddf9beSLuis Henriques u8 copy_from_flags) 533923ddf9beSLuis Henriques { 534023ddf9beSLuis Henriques struct ceph_osd_request *req; 534123ddf9beSLuis Henriques int ret; 534223ddf9beSLuis Henriques 534323ddf9beSLuis Henriques req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_KERNEL); 534423ddf9beSLuis Henriques if (!req) 534523ddf9beSLuis Henriques return -ENOMEM; 534623ddf9beSLuis Henriques 534723ddf9beSLuis Henriques req->r_flags = CEPH_OSD_FLAG_WRITE; 534823ddf9beSLuis Henriques 534923ddf9beSLuis Henriques ceph_oloc_copy(&req->r_t.base_oloc, dst_oloc); 535023ddf9beSLuis Henriques ceph_oid_copy(&req->r_t.base_oid, dst_oid); 535123ddf9beSLuis Henriques 535223ddf9beSLuis Henriques ret = osd_req_op_copy_from_init(req, src_snapid, src_version, src_oid, 535323ddf9beSLuis Henriques src_oloc, src_fadvise_flags, 535423ddf9beSLuis Henriques dst_fadvise_flags, copy_from_flags); 535523ddf9beSLuis Henriques if (ret) 535623ddf9beSLuis Henriques goto out; 535723ddf9beSLuis Henriques 535823ddf9beSLuis Henriques ret = ceph_osdc_alloc_messages(req, GFP_KERNEL); 535923ddf9beSLuis Henriques if (ret) 536023ddf9beSLuis Henriques goto out; 536123ddf9beSLuis Henriques 536223ddf9beSLuis Henriques ceph_osdc_start_request(osdc, req, false); 536323ddf9beSLuis Henriques ret = ceph_osdc_wait_request(osdc, req); 536423ddf9beSLuis Henriques 536523ddf9beSLuis Henriques out: 536623ddf9beSLuis Henriques ceph_osdc_put_request(req); 536723ddf9beSLuis Henriques return ret; 536823ddf9beSLuis Henriques } 536923ddf9beSLuis Henriques EXPORT_SYMBOL(ceph_osdc_copy_from); 537023ddf9beSLuis Henriques 537157a35dfbSChengguang Xu int __init ceph_osdc_setup(void) 53725522ae0bSAlex Elder { 53733f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 53743f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 53753f1af42aSIlya Dryomov 53765522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 53773f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 53783f1af42aSIlya Dryomov 0, 0, NULL); 53795522ae0bSAlex Elder 53805522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 53815522ae0bSAlex Elder } 53825522ae0bSAlex Elder 53835522ae0bSAlex Elder void ceph_osdc_cleanup(void) 53845522ae0bSAlex Elder { 53855522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 53865522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 53875522ae0bSAlex Elder ceph_osd_request_cache = NULL; 53885522ae0bSAlex Elder } 53895522ae0bSAlex Elder 53903d14c5d2SYehuda Sadeh /* 53913d14c5d2SYehuda Sadeh * handle incoming message 53923d14c5d2SYehuda Sadeh */ 53933d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 53943d14c5d2SYehuda Sadeh { 53953d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 53965aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 53973d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 53983d14c5d2SYehuda Sadeh 53993d14c5d2SYehuda Sadeh switch (type) { 54003d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 54013d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 54023d14c5d2SYehuda Sadeh break; 54033d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 54045aea3dcdSIlya Dryomov handle_reply(osd, msg); 54053d14c5d2SYehuda Sadeh break; 5406a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5407a02a946dSIlya Dryomov handle_backoff(osd, msg); 5408a02a946dSIlya Dryomov break; 5409a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 5410a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 5411a40c4f10SYehuda Sadeh break; 54123d14c5d2SYehuda Sadeh 54133d14c5d2SYehuda Sadeh default: 54143d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 54153d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 54163d14c5d2SYehuda Sadeh } 54175aea3dcdSIlya Dryomov 54183d14c5d2SYehuda Sadeh ceph_msg_put(msg); 54193d14c5d2SYehuda Sadeh } 54203d14c5d2SYehuda Sadeh 54213d14c5d2SYehuda Sadeh /* 5422d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 5423d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 5424d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 54253d14c5d2SYehuda Sadeh */ 54263d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 54273d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 54283d14c5d2SYehuda Sadeh int *skip) 54293d14c5d2SYehuda Sadeh { 54303d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 54313d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 54325aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 54333d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 54343f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 54353d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 54365aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 54373d14c5d2SYehuda Sadeh 54385aea3dcdSIlya Dryomov down_read(&osdc->lock); 54395aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 54405aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 54415aea3dcdSIlya Dryomov *skip = 1; 54425aea3dcdSIlya Dryomov goto out_unlock_osdc; 54435aea3dcdSIlya Dryomov } 54445aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 54455aea3dcdSIlya Dryomov 54465aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 54475aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 54483d14c5d2SYehuda Sadeh if (!req) { 5449cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 5450cd8140c6SIlya Dryomov osd->o_osd, tid); 5451d15f9d69SIlya Dryomov *skip = 1; 54525aea3dcdSIlya Dryomov goto out_unlock_session; 54533d14c5d2SYehuda Sadeh } 54543d14c5d2SYehuda Sadeh 54558921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 54563d14c5d2SYehuda Sadeh 5457f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 5458d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 5459d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 5460d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 54613f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 54623f0a4ac5SIlya Dryomov false); 54633d14c5d2SYehuda Sadeh if (!m) 54645aea3dcdSIlya Dryomov goto out_unlock_session; 54653d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 54663d14c5d2SYehuda Sadeh req->r_reply = m; 54673d14c5d2SYehuda Sadeh } 54683d14c5d2SYehuda Sadeh 5469d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 5470d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 5471d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 5472d15f9d69SIlya Dryomov req->r_reply->data_length); 54733d14c5d2SYehuda Sadeh m = NULL; 5474d15f9d69SIlya Dryomov *skip = 1; 54755aea3dcdSIlya Dryomov goto out_unlock_session; 54763d14c5d2SYehuda Sadeh } 5477d15f9d69SIlya Dryomov 5478d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 54793d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 54803d14c5d2SYehuda Sadeh 54815aea3dcdSIlya Dryomov out_unlock_session: 54825aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 54835aea3dcdSIlya Dryomov out_unlock_osdc: 54845aea3dcdSIlya Dryomov up_read(&osdc->lock); 54853d14c5d2SYehuda Sadeh return m; 54863d14c5d2SYehuda Sadeh } 54873d14c5d2SYehuda Sadeh 548819079203SIlya Dryomov /* 548919079203SIlya Dryomov * TODO: switch to a msg-owned pagelist 549019079203SIlya Dryomov */ 549119079203SIlya Dryomov static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) 549219079203SIlya Dryomov { 549319079203SIlya Dryomov struct ceph_msg *m; 549419079203SIlya Dryomov int type = le16_to_cpu(hdr->type); 549519079203SIlya Dryomov u32 front_len = le32_to_cpu(hdr->front_len); 549619079203SIlya Dryomov u32 data_len = le32_to_cpu(hdr->data_len); 549719079203SIlya Dryomov 54980d9c1ab3SIlya Dryomov m = ceph_msg_new2(type, front_len, 1, GFP_NOIO, false); 549919079203SIlya Dryomov if (!m) 550019079203SIlya Dryomov return NULL; 550119079203SIlya Dryomov 550219079203SIlya Dryomov if (data_len) { 550319079203SIlya Dryomov struct page **pages; 550419079203SIlya Dryomov struct ceph_osd_data osd_data; 550519079203SIlya Dryomov 550619079203SIlya Dryomov pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), 550719079203SIlya Dryomov GFP_NOIO); 5508c22e853aSWei Yongjun if (IS_ERR(pages)) { 550919079203SIlya Dryomov ceph_msg_put(m); 551019079203SIlya Dryomov return NULL; 551119079203SIlya Dryomov } 551219079203SIlya Dryomov 551319079203SIlya Dryomov ceph_osd_data_pages_init(&osd_data, pages, data_len, 0, false, 551419079203SIlya Dryomov false); 551519079203SIlya Dryomov ceph_osdc_msg_data_add(m, &osd_data); 551619079203SIlya Dryomov } 551719079203SIlya Dryomov 551819079203SIlya Dryomov return m; 551919079203SIlya Dryomov } 552019079203SIlya Dryomov 55213d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 55223d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 55233d14c5d2SYehuda Sadeh int *skip) 55243d14c5d2SYehuda Sadeh { 55253d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 55263d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 55273d14c5d2SYehuda Sadeh 55281c20f2d2SAlex Elder *skip = 0; 55293d14c5d2SYehuda Sadeh switch (type) { 55303d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 5531a02a946dSIlya Dryomov case CEPH_MSG_OSD_BACKOFF: 5532a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 553319079203SIlya Dryomov return alloc_msg_with_page_vector(hdr); 55343d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 55353d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 55363d14c5d2SYehuda Sadeh default: 55375aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 55385aea3dcdSIlya Dryomov osd->o_osd, type); 55393d14c5d2SYehuda Sadeh *skip = 1; 55403d14c5d2SYehuda Sadeh return NULL; 55413d14c5d2SYehuda Sadeh } 55423d14c5d2SYehuda Sadeh } 55433d14c5d2SYehuda Sadeh 55443d14c5d2SYehuda Sadeh /* 55453d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 55463d14c5d2SYehuda Sadeh */ 55473d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 55483d14c5d2SYehuda Sadeh { 55493d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 55503d14c5d2SYehuda Sadeh if (get_osd(osd)) 55513d14c5d2SYehuda Sadeh return con; 55523d14c5d2SYehuda Sadeh return NULL; 55533d14c5d2SYehuda Sadeh } 55543d14c5d2SYehuda Sadeh 55553d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 55563d14c5d2SYehuda Sadeh { 55573d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 55583d14c5d2SYehuda Sadeh put_osd(osd); 55593d14c5d2SYehuda Sadeh } 55603d14c5d2SYehuda Sadeh 55613d14c5d2SYehuda Sadeh /* 55623d14c5d2SYehuda Sadeh * authentication 55633d14c5d2SYehuda Sadeh */ 5564a3530df3SAlex Elder /* 5565a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 5566a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 5567a3530df3SAlex Elder */ 5568a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 55698f43fb53SAlex Elder int *proto, int force_new) 55703d14c5d2SYehuda Sadeh { 55713d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 55723d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 55733d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 557474f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 55753d14c5d2SYehuda Sadeh 557674f1869fSAlex Elder if (force_new && auth->authorizer) { 55776c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 557874f1869fSAlex Elder auth->authorizer = NULL; 55793d14c5d2SYehuda Sadeh } 558027859f97SSage Weil if (!auth->authorizer) { 558127859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 5582a3530df3SAlex Elder auth); 55833d14c5d2SYehuda Sadeh if (ret) 5584a3530df3SAlex Elder return ERR_PTR(ret); 558527859f97SSage Weil } else { 558627859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 55870bed9b5cSSage Weil auth); 55880bed9b5cSSage Weil if (ret) 55890bed9b5cSSage Weil return ERR_PTR(ret); 55903d14c5d2SYehuda Sadeh } 55913d14c5d2SYehuda Sadeh *proto = ac->protocol; 559274f1869fSAlex Elder 5593a3530df3SAlex Elder return auth; 55943d14c5d2SYehuda Sadeh } 55953d14c5d2SYehuda Sadeh 55966daca13dSIlya Dryomov static int add_authorizer_challenge(struct ceph_connection *con, 55976daca13dSIlya Dryomov void *challenge_buf, int challenge_buf_len) 55986daca13dSIlya Dryomov { 55996daca13dSIlya Dryomov struct ceph_osd *o = con->private; 56006daca13dSIlya Dryomov struct ceph_osd_client *osdc = o->o_osdc; 56016daca13dSIlya Dryomov struct ceph_auth_client *ac = osdc->client->monc.auth; 56026daca13dSIlya Dryomov 56036daca13dSIlya Dryomov return ceph_auth_add_authorizer_challenge(ac, o->o_auth.authorizer, 56046daca13dSIlya Dryomov challenge_buf, challenge_buf_len); 56056daca13dSIlya Dryomov } 56063d14c5d2SYehuda Sadeh 56070dde5848SIlya Dryomov static int verify_authorizer_reply(struct ceph_connection *con) 56083d14c5d2SYehuda Sadeh { 56093d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 56103d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 56113d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 56123d14c5d2SYehuda Sadeh 56130dde5848SIlya Dryomov return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer); 56143d14c5d2SYehuda Sadeh } 56153d14c5d2SYehuda Sadeh 56163d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 56173d14c5d2SYehuda Sadeh { 56183d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 56193d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 56203d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 56213d14c5d2SYehuda Sadeh 562227859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 56233d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 56243d14c5d2SYehuda Sadeh } 56253d14c5d2SYehuda Sadeh 56268cb441c0SIlya Dryomov static void osd_reencode_message(struct ceph_msg *msg) 56278cb441c0SIlya Dryomov { 5628914902afSIlya Dryomov int type = le16_to_cpu(msg->hdr.type); 5629914902afSIlya Dryomov 5630914902afSIlya Dryomov if (type == CEPH_MSG_OSD_OP) 56318cb441c0SIlya Dryomov encode_request_finish(msg); 56328cb441c0SIlya Dryomov } 56338cb441c0SIlya Dryomov 563479dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 563533d07337SYan, Zheng { 563679dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 563733d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 563879dbd1baSIlya Dryomov 563933d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 564033d07337SYan, Zheng } 564133d07337SYan, Zheng 564279dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 564333d07337SYan, Zheng { 564479dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 564533d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 564679dbd1baSIlya Dryomov 564733d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 564833d07337SYan, Zheng } 564933d07337SYan, Zheng 56503d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 56513d14c5d2SYehuda Sadeh .get = get_osd_con, 56523d14c5d2SYehuda Sadeh .put = put_osd_con, 56533d14c5d2SYehuda Sadeh .dispatch = dispatch, 56543d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 56556daca13dSIlya Dryomov .add_authorizer_challenge = add_authorizer_challenge, 56563d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 56573d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 56583d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 56598cb441c0SIlya Dryomov .reencode_message = osd_reencode_message, 566079dbd1baSIlya Dryomov .sign_message = osd_sign_message, 566179dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 56625aea3dcdSIlya Dryomov .fault = osd_fault, 56633d14c5d2SYehuda Sadeh }; 5664