1a4ce40a9SAlex Elder 23d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 33d14c5d2SYehuda Sadeh 43d14c5d2SYehuda Sadeh #include <linux/module.h> 53d14c5d2SYehuda Sadeh #include <linux/err.h> 63d14c5d2SYehuda Sadeh #include <linux/highmem.h> 73d14c5d2SYehuda Sadeh #include <linux/mm.h> 83d14c5d2SYehuda Sadeh #include <linux/pagemap.h> 93d14c5d2SYehuda Sadeh #include <linux/slab.h> 103d14c5d2SYehuda Sadeh #include <linux/uaccess.h> 113d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 123d14c5d2SYehuda Sadeh #include <linux/bio.h> 133d14c5d2SYehuda Sadeh #endif 143d14c5d2SYehuda Sadeh 158cb441c0SIlya Dryomov #include <linux/ceph/ceph_features.h> 163d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 173d14c5d2SYehuda Sadeh #include <linux/ceph/osd_client.h> 183d14c5d2SYehuda Sadeh #include <linux/ceph/messenger.h> 193d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 203d14c5d2SYehuda Sadeh #include <linux/ceph/auth.h> 213d14c5d2SYehuda Sadeh #include <linux/ceph/pagelist.h> 223d14c5d2SYehuda Sadeh 233d14c5d2SYehuda Sadeh #define OSD_OPREPLY_FRONT_LEN 512 243d14c5d2SYehuda Sadeh 255522ae0bSAlex Elder static struct kmem_cache *ceph_osd_request_cache; 265522ae0bSAlex Elder 273d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops; 283d14c5d2SYehuda Sadeh 293d14c5d2SYehuda Sadeh /* 303d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 313d14c5d2SYehuda Sadeh * 323d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 333d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 343d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 353d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 363d14c5d2SYehuda Sadeh * access to storage. 373d14c5d2SYehuda Sadeh * 383d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 393d14c5d2SYehuda Sadeh * are described by the osd map. 403d14c5d2SYehuda Sadeh * 413d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 423d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 433d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 443d14c5d2SYehuda Sadeh * channel with an OSD is reset. 453d14c5d2SYehuda Sadeh */ 463d14c5d2SYehuda Sadeh 475aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req); 485aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req); 49922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 50922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq); 51922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 52922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq); 535aea3dcdSIlya Dryomov 545aea3dcdSIlya Dryomov #if 1 555aea3dcdSIlya Dryomov static inline bool rwsem_is_wrlocked(struct rw_semaphore *sem) 565aea3dcdSIlya Dryomov { 575aea3dcdSIlya Dryomov bool wrlocked = true; 585aea3dcdSIlya Dryomov 595aea3dcdSIlya Dryomov if (unlikely(down_read_trylock(sem))) { 605aea3dcdSIlya Dryomov wrlocked = false; 615aea3dcdSIlya Dryomov up_read(sem); 625aea3dcdSIlya Dryomov } 635aea3dcdSIlya Dryomov 645aea3dcdSIlya Dryomov return wrlocked; 655aea3dcdSIlya Dryomov } 665aea3dcdSIlya Dryomov static inline void verify_osdc_locked(struct ceph_osd_client *osdc) 675aea3dcdSIlya Dryomov { 685aea3dcdSIlya Dryomov WARN_ON(!rwsem_is_locked(&osdc->lock)); 695aea3dcdSIlya Dryomov } 705aea3dcdSIlya Dryomov static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) 715aea3dcdSIlya Dryomov { 725aea3dcdSIlya Dryomov WARN_ON(!rwsem_is_wrlocked(&osdc->lock)); 735aea3dcdSIlya Dryomov } 745aea3dcdSIlya Dryomov static inline void verify_osd_locked(struct ceph_osd *osd) 755aea3dcdSIlya Dryomov { 765aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 775aea3dcdSIlya Dryomov 785aea3dcdSIlya Dryomov WARN_ON(!(mutex_is_locked(&osd->lock) && 795aea3dcdSIlya Dryomov rwsem_is_locked(&osdc->lock)) && 805aea3dcdSIlya Dryomov !rwsem_is_wrlocked(&osdc->lock)); 815aea3dcdSIlya Dryomov } 82922dab61SIlya Dryomov static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) 83922dab61SIlya Dryomov { 84922dab61SIlya Dryomov WARN_ON(!mutex_is_locked(&lreq->lock)); 85922dab61SIlya Dryomov } 865aea3dcdSIlya Dryomov #else 875aea3dcdSIlya Dryomov static inline void verify_osdc_locked(struct ceph_osd_client *osdc) { } 885aea3dcdSIlya Dryomov static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) { } 895aea3dcdSIlya Dryomov static inline void verify_osd_locked(struct ceph_osd *osd) { } 90922dab61SIlya Dryomov static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) { } 915aea3dcdSIlya Dryomov #endif 925aea3dcdSIlya Dryomov 933d14c5d2SYehuda Sadeh /* 943d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 953d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 963d14c5d2SYehuda Sadeh * object boundary. 973d14c5d2SYehuda Sadeh * 983d14c5d2SYehuda Sadeh * fill osd op in request message. 993d14c5d2SYehuda Sadeh */ 100dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 101a19dadfbSAlex Elder u64 *objnum, u64 *objoff, u64 *objlen) 1023d14c5d2SYehuda Sadeh { 10360e56f13SAlex Elder u64 orig_len = *plen; 104d63b77f4SSage Weil int r; 1053d14c5d2SYehuda Sadeh 10660e56f13SAlex Elder /* object extent? */ 10775d1c941SAlex Elder r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, 10875d1c941SAlex Elder objoff, objlen); 109d63b77f4SSage Weil if (r < 0) 110d63b77f4SSage Weil return r; 11175d1c941SAlex Elder if (*objlen < orig_len) { 11275d1c941SAlex Elder *plen = *objlen; 11360e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 11460e56f13SAlex Elder orig_len - *plen, off, *plen); 11560e56f13SAlex Elder } 11660e56f13SAlex Elder 11775d1c941SAlex Elder dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); 1183d14c5d2SYehuda Sadeh 1193ff5f385SAlex Elder return 0; 1203d14c5d2SYehuda Sadeh } 1213d14c5d2SYehuda Sadeh 122c54d47bfSAlex Elder static void ceph_osd_data_init(struct ceph_osd_data *osd_data) 123c54d47bfSAlex Elder { 124c54d47bfSAlex Elder memset(osd_data, 0, sizeof (*osd_data)); 125c54d47bfSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_NONE; 126c54d47bfSAlex Elder } 127c54d47bfSAlex Elder 128a4ce40a9SAlex Elder static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, 12943bfe5deSAlex Elder struct page **pages, u64 length, u32 alignment, 13043bfe5deSAlex Elder bool pages_from_pool, bool own_pages) 13143bfe5deSAlex Elder { 13243bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 13343bfe5deSAlex Elder osd_data->pages = pages; 13443bfe5deSAlex Elder osd_data->length = length; 13543bfe5deSAlex Elder osd_data->alignment = alignment; 13643bfe5deSAlex Elder osd_data->pages_from_pool = pages_from_pool; 13743bfe5deSAlex Elder osd_data->own_pages = own_pages; 13843bfe5deSAlex Elder } 13943bfe5deSAlex Elder 140a4ce40a9SAlex Elder static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, 14143bfe5deSAlex Elder struct ceph_pagelist *pagelist) 14243bfe5deSAlex Elder { 14343bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; 14443bfe5deSAlex Elder osd_data->pagelist = pagelist; 14543bfe5deSAlex Elder } 14643bfe5deSAlex Elder 14743bfe5deSAlex Elder #ifdef CONFIG_BLOCK 148a4ce40a9SAlex Elder static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 14943bfe5deSAlex Elder struct bio *bio, size_t bio_length) 15043bfe5deSAlex Elder { 15143bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_BIO; 15243bfe5deSAlex Elder osd_data->bio = bio; 15343bfe5deSAlex Elder osd_data->bio_length = bio_length; 15443bfe5deSAlex Elder } 15543bfe5deSAlex Elder #endif /* CONFIG_BLOCK */ 15643bfe5deSAlex Elder 157863c7eb5SAlex Elder #define osd_req_op_data(oreq, whch, typ, fld) \ 158863c7eb5SAlex Elder ({ \ 1598a703a38SIoana Ciornei struct ceph_osd_request *__oreq = (oreq); \ 1608a703a38SIoana Ciornei unsigned int __whch = (whch); \ 1618a703a38SIoana Ciornei BUG_ON(__whch >= __oreq->r_num_ops); \ 1628a703a38SIoana Ciornei &__oreq->r_ops[__whch].typ.fld; \ 163863c7eb5SAlex Elder }) 164863c7eb5SAlex Elder 16549719778SAlex Elder static struct ceph_osd_data * 16649719778SAlex Elder osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) 16749719778SAlex Elder { 16849719778SAlex Elder BUG_ON(which >= osd_req->r_num_ops); 16949719778SAlex Elder 17049719778SAlex Elder return &osd_req->r_ops[which].raw_data_in; 17149719778SAlex Elder } 17249719778SAlex Elder 173a4ce40a9SAlex Elder struct ceph_osd_data * 174a4ce40a9SAlex Elder osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, 175406e2c9fSAlex Elder unsigned int which) 176a4ce40a9SAlex Elder { 177863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, extent, osd_data); 178a4ce40a9SAlex Elder } 179a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data); 180a4ce40a9SAlex Elder 18149719778SAlex Elder void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 18249719778SAlex Elder unsigned int which, struct page **pages, 18349719778SAlex Elder u64 length, u32 alignment, 18449719778SAlex Elder bool pages_from_pool, bool own_pages) 18549719778SAlex Elder { 18649719778SAlex Elder struct ceph_osd_data *osd_data; 18749719778SAlex Elder 18849719778SAlex Elder osd_data = osd_req_op_raw_data_in(osd_req, which); 18949719778SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 19049719778SAlex Elder pages_from_pool, own_pages); 19149719778SAlex Elder } 19249719778SAlex Elder EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 19349719778SAlex Elder 194a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 195406e2c9fSAlex Elder unsigned int which, struct page **pages, 196406e2c9fSAlex Elder u64 length, u32 alignment, 197a4ce40a9SAlex Elder bool pages_from_pool, bool own_pages) 198a4ce40a9SAlex Elder { 199a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 200a4ce40a9SAlex Elder 201863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 202a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 203a4ce40a9SAlex Elder pages_from_pool, own_pages); 204a4ce40a9SAlex Elder } 205a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 206a4ce40a9SAlex Elder 207a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 208406e2c9fSAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 209a4ce40a9SAlex Elder { 210a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 211a4ce40a9SAlex Elder 212863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 213a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 214a4ce40a9SAlex Elder } 215a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 216a4ce40a9SAlex Elder 217a4ce40a9SAlex Elder #ifdef CONFIG_BLOCK 218a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 219406e2c9fSAlex Elder unsigned int which, struct bio *bio, size_t bio_length) 220a4ce40a9SAlex Elder { 221a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 222863c7eb5SAlex Elder 223863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 224a4ce40a9SAlex Elder ceph_osd_data_bio_init(osd_data, bio, bio_length); 225a4ce40a9SAlex Elder } 226a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 227a4ce40a9SAlex Elder #endif /* CONFIG_BLOCK */ 228a4ce40a9SAlex Elder 229a4ce40a9SAlex Elder static void osd_req_op_cls_request_info_pagelist( 230a4ce40a9SAlex Elder struct ceph_osd_request *osd_req, 231a4ce40a9SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 232a4ce40a9SAlex Elder { 233a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 234a4ce40a9SAlex Elder 235863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_info); 236a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 237a4ce40a9SAlex Elder } 238a4ce40a9SAlex Elder 23904017e29SAlex Elder void osd_req_op_cls_request_data_pagelist( 24004017e29SAlex Elder struct ceph_osd_request *osd_req, 24104017e29SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 24204017e29SAlex Elder { 24304017e29SAlex Elder struct ceph_osd_data *osd_data; 24404017e29SAlex Elder 245863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 24604017e29SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 247bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += pagelist->length; 248bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += pagelist->length; 24904017e29SAlex Elder } 25004017e29SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 25104017e29SAlex Elder 2526c57b554SAlex Elder void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 2536c57b554SAlex Elder unsigned int which, struct page **pages, u64 length, 2546c57b554SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 2556c57b554SAlex Elder { 2566c57b554SAlex Elder struct ceph_osd_data *osd_data; 2576c57b554SAlex Elder 2586c57b554SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 2596c57b554SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 2606c57b554SAlex Elder pages_from_pool, own_pages); 261bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += length; 262bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += length; 2636c57b554SAlex Elder } 2646c57b554SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 2656c57b554SAlex Elder 266a4ce40a9SAlex Elder void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 267a4ce40a9SAlex Elder unsigned int which, struct page **pages, u64 length, 268a4ce40a9SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 269a4ce40a9SAlex Elder { 270a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 271a4ce40a9SAlex Elder 272863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, response_data); 273a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 274a4ce40a9SAlex Elder pages_from_pool, own_pages); 275a4ce40a9SAlex Elder } 276a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 277a4ce40a9SAlex Elder 27823c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 27923c08a9cSAlex Elder { 28023c08a9cSAlex Elder switch (osd_data->type) { 28123c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 28223c08a9cSAlex Elder return 0; 28323c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 28423c08a9cSAlex Elder return osd_data->length; 28523c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 28623c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 28723c08a9cSAlex Elder #ifdef CONFIG_BLOCK 28823c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 28923c08a9cSAlex Elder return (u64)osd_data->bio_length; 29023c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 29123c08a9cSAlex Elder default: 29223c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 29323c08a9cSAlex Elder return 0; 29423c08a9cSAlex Elder } 29523c08a9cSAlex Elder } 29623c08a9cSAlex Elder 297c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 298c54d47bfSAlex Elder { 2995476492fSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 300c54d47bfSAlex Elder int num_pages; 301c54d47bfSAlex Elder 302c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 303c54d47bfSAlex Elder (u64)osd_data->length); 304c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 305c54d47bfSAlex Elder } 3065476492fSAlex Elder ceph_osd_data_init(osd_data); 3075476492fSAlex Elder } 3085476492fSAlex Elder 3095476492fSAlex Elder static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 3105476492fSAlex Elder unsigned int which) 3115476492fSAlex Elder { 3125476492fSAlex Elder struct ceph_osd_req_op *op; 3135476492fSAlex Elder 3145476492fSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 3155476492fSAlex Elder op = &osd_req->r_ops[which]; 3165476492fSAlex Elder 3175476492fSAlex Elder switch (op->op) { 3185476492fSAlex Elder case CEPH_OSD_OP_READ: 3195476492fSAlex Elder case CEPH_OSD_OP_WRITE: 320e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 3215476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 3225476492fSAlex Elder break; 3235476492fSAlex Elder case CEPH_OSD_OP_CALL: 3245476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 32504017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 3265476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 3275476492fSAlex Elder break; 328d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 329d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 330d74b50beSYan, Zheng ceph_osd_data_release(&op->xattr.osd_data); 331d74b50beSYan, Zheng break; 33266ba609fSYan, Zheng case CEPH_OSD_OP_STAT: 33366ba609fSYan, Zheng ceph_osd_data_release(&op->raw_data_in); 33466ba609fSYan, Zheng break; 335922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 336922dab61SIlya Dryomov ceph_osd_data_release(&op->notify_ack.request_data); 337922dab61SIlya Dryomov break; 33819079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 33919079203SIlya Dryomov ceph_osd_data_release(&op->notify.request_data); 34019079203SIlya Dryomov ceph_osd_data_release(&op->notify.response_data); 34119079203SIlya Dryomov break; 342a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 343a4ed38d7SDouglas Fuller ceph_osd_data_release(&op->list_watchers.response_data); 344a4ed38d7SDouglas Fuller break; 3455476492fSAlex Elder default: 3465476492fSAlex Elder break; 3475476492fSAlex Elder } 348c54d47bfSAlex Elder } 349c54d47bfSAlex Elder 3503d14c5d2SYehuda Sadeh /* 35163244fa1SIlya Dryomov * Assumes @t is zero-initialized. 35263244fa1SIlya Dryomov */ 35363244fa1SIlya Dryomov static void target_init(struct ceph_osd_request_target *t) 35463244fa1SIlya Dryomov { 35563244fa1SIlya Dryomov ceph_oid_init(&t->base_oid); 35663244fa1SIlya Dryomov ceph_oloc_init(&t->base_oloc); 35763244fa1SIlya Dryomov ceph_oid_init(&t->target_oid); 35863244fa1SIlya Dryomov ceph_oloc_init(&t->target_oloc); 35963244fa1SIlya Dryomov 36063244fa1SIlya Dryomov ceph_osds_init(&t->acting); 36163244fa1SIlya Dryomov ceph_osds_init(&t->up); 36263244fa1SIlya Dryomov t->size = -1; 36363244fa1SIlya Dryomov t->min_size = -1; 36463244fa1SIlya Dryomov 36563244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 36663244fa1SIlya Dryomov } 36763244fa1SIlya Dryomov 368922dab61SIlya Dryomov static void target_copy(struct ceph_osd_request_target *dest, 369922dab61SIlya Dryomov const struct ceph_osd_request_target *src) 370922dab61SIlya Dryomov { 371922dab61SIlya Dryomov ceph_oid_copy(&dest->base_oid, &src->base_oid); 372922dab61SIlya Dryomov ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); 373922dab61SIlya Dryomov ceph_oid_copy(&dest->target_oid, &src->target_oid); 374922dab61SIlya Dryomov ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); 375922dab61SIlya Dryomov 376922dab61SIlya Dryomov dest->pgid = src->pgid; /* struct */ 377dc98ff72SIlya Dryomov dest->spgid = src->spgid; /* struct */ 378922dab61SIlya Dryomov dest->pg_num = src->pg_num; 379922dab61SIlya Dryomov dest->pg_num_mask = src->pg_num_mask; 380922dab61SIlya Dryomov ceph_osds_copy(&dest->acting, &src->acting); 381922dab61SIlya Dryomov ceph_osds_copy(&dest->up, &src->up); 382922dab61SIlya Dryomov dest->size = src->size; 383922dab61SIlya Dryomov dest->min_size = src->min_size; 384922dab61SIlya Dryomov dest->sort_bitwise = src->sort_bitwise; 385922dab61SIlya Dryomov 386922dab61SIlya Dryomov dest->flags = src->flags; 387922dab61SIlya Dryomov dest->paused = src->paused; 388922dab61SIlya Dryomov 389dc93e0e2SIlya Dryomov dest->last_force_resend = src->last_force_resend; 390dc93e0e2SIlya Dryomov 391922dab61SIlya Dryomov dest->osd = src->osd; 392922dab61SIlya Dryomov } 393922dab61SIlya Dryomov 39463244fa1SIlya Dryomov static void target_destroy(struct ceph_osd_request_target *t) 39563244fa1SIlya Dryomov { 39663244fa1SIlya Dryomov ceph_oid_destroy(&t->base_oid); 39730c156d9SYan, Zheng ceph_oloc_destroy(&t->base_oloc); 39863244fa1SIlya Dryomov ceph_oid_destroy(&t->target_oid); 39930c156d9SYan, Zheng ceph_oloc_destroy(&t->target_oloc); 40063244fa1SIlya Dryomov } 40163244fa1SIlya Dryomov 40263244fa1SIlya Dryomov /* 4033d14c5d2SYehuda Sadeh * requests 4043d14c5d2SYehuda Sadeh */ 4053540bfdbSIlya Dryomov static void request_release_checks(struct ceph_osd_request *req) 4063540bfdbSIlya Dryomov { 4073540bfdbSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 4084609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node)); 4093540bfdbSIlya Dryomov WARN_ON(!list_empty(&req->r_unsafe_item)); 4103540bfdbSIlya Dryomov WARN_ON(req->r_osd); 4113540bfdbSIlya Dryomov } 4123540bfdbSIlya Dryomov 4139e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 4143d14c5d2SYehuda Sadeh { 4159e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 4169e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 4175476492fSAlex Elder unsigned int which; 4183d14c5d2SYehuda Sadeh 4199e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 4209e94af20SIlya Dryomov req->r_request, req->r_reply); 4213540bfdbSIlya Dryomov request_release_checks(req); 4229e94af20SIlya Dryomov 4233d14c5d2SYehuda Sadeh if (req->r_request) 4243d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 4255aea3dcdSIlya Dryomov if (req->r_reply) 426ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 4270fff87ecSAlex Elder 4285476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 4295476492fSAlex Elder osd_req_op_data_release(req, which); 4300fff87ecSAlex Elder 431a66dd383SIlya Dryomov target_destroy(&req->r_t); 4323d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 433d30291b9SIlya Dryomov 4343d14c5d2SYehuda Sadeh if (req->r_mempool) 4353d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 4363f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 4375522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 4383f1af42aSIlya Dryomov else 4393f1af42aSIlya Dryomov kfree(req); 4403d14c5d2SYehuda Sadeh } 4419e94af20SIlya Dryomov 4429e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 4439e94af20SIlya Dryomov { 4449e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 4452c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 4469e94af20SIlya Dryomov kref_get(&req->r_kref); 4479e94af20SIlya Dryomov } 4489e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 4499e94af20SIlya Dryomov 4509e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 4519e94af20SIlya Dryomov { 4523ed97d63SIlya Dryomov if (req) { 4539e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 4542c935bc5SPeter Zijlstra kref_read(&req->r_kref)); 4559e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 4569e94af20SIlya Dryomov } 4573ed97d63SIlya Dryomov } 4589e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 4593d14c5d2SYehuda Sadeh 4603540bfdbSIlya Dryomov static void request_init(struct ceph_osd_request *req) 4613540bfdbSIlya Dryomov { 4623540bfdbSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 4633540bfdbSIlya Dryomov memset(req, 0, sizeof(*req)); 4643540bfdbSIlya Dryomov 4653540bfdbSIlya Dryomov kref_init(&req->r_kref); 4663540bfdbSIlya Dryomov init_completion(&req->r_completion); 4673540bfdbSIlya Dryomov RB_CLEAR_NODE(&req->r_node); 4684609245eSIlya Dryomov RB_CLEAR_NODE(&req->r_mc_node); 4693540bfdbSIlya Dryomov INIT_LIST_HEAD(&req->r_unsafe_item); 4703540bfdbSIlya Dryomov 4713540bfdbSIlya Dryomov target_init(&req->r_t); 4723540bfdbSIlya Dryomov } 4733540bfdbSIlya Dryomov 474922dab61SIlya Dryomov /* 475922dab61SIlya Dryomov * This is ugly, but it allows us to reuse linger registration and ping 476922dab61SIlya Dryomov * requests, keeping the structure of the code around send_linger{_ping}() 477922dab61SIlya Dryomov * reasonable. Setting up a min_nr=2 mempool for each linger request 478922dab61SIlya Dryomov * and dealing with copying ops (this blasts req only, watch op remains 479922dab61SIlya Dryomov * intact) isn't any better. 480922dab61SIlya Dryomov */ 481922dab61SIlya Dryomov static void request_reinit(struct ceph_osd_request *req) 482922dab61SIlya Dryomov { 483922dab61SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 484922dab61SIlya Dryomov bool mempool = req->r_mempool; 485922dab61SIlya Dryomov unsigned int num_ops = req->r_num_ops; 486922dab61SIlya Dryomov u64 snapid = req->r_snapid; 487922dab61SIlya Dryomov struct ceph_snap_context *snapc = req->r_snapc; 488922dab61SIlya Dryomov bool linger = req->r_linger; 489922dab61SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 490922dab61SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 491922dab61SIlya Dryomov 492922dab61SIlya Dryomov dout("%s req %p\n", __func__, req); 4932c935bc5SPeter Zijlstra WARN_ON(kref_read(&req->r_kref) != 1); 494922dab61SIlya Dryomov request_release_checks(req); 495922dab61SIlya Dryomov 4962c935bc5SPeter Zijlstra WARN_ON(kref_read(&request_msg->kref) != 1); 4972c935bc5SPeter Zijlstra WARN_ON(kref_read(&reply_msg->kref) != 1); 498922dab61SIlya Dryomov target_destroy(&req->r_t); 499922dab61SIlya Dryomov 500922dab61SIlya Dryomov request_init(req); 501922dab61SIlya Dryomov req->r_osdc = osdc; 502922dab61SIlya Dryomov req->r_mempool = mempool; 503922dab61SIlya Dryomov req->r_num_ops = num_ops; 504922dab61SIlya Dryomov req->r_snapid = snapid; 505922dab61SIlya Dryomov req->r_snapc = snapc; 506922dab61SIlya Dryomov req->r_linger = linger; 507922dab61SIlya Dryomov req->r_request = request_msg; 508922dab61SIlya Dryomov req->r_reply = reply_msg; 509922dab61SIlya Dryomov } 510922dab61SIlya Dryomov 5113d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 5123d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5131b83bef2SSage Weil unsigned int num_ops, 5143d14c5d2SYehuda Sadeh bool use_mempool, 51554a54007SAlex Elder gfp_t gfp_flags) 5163d14c5d2SYehuda Sadeh { 5173d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5183d14c5d2SYehuda Sadeh 5193d14c5d2SYehuda Sadeh if (use_mempool) { 5203f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 5213d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 5223f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 5233f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 5243d14c5d2SYehuda Sadeh } else { 5253f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 5263f1af42aSIlya Dryomov req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), 5273f1af42aSIlya Dryomov gfp_flags); 5283d14c5d2SYehuda Sadeh } 5293f1af42aSIlya Dryomov if (unlikely(!req)) 5303d14c5d2SYehuda Sadeh return NULL; 5313d14c5d2SYehuda Sadeh 5323540bfdbSIlya Dryomov request_init(req); 5333d14c5d2SYehuda Sadeh req->r_osdc = osdc; 5343d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 53579528734SAlex Elder req->r_num_ops = num_ops; 53684127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 53784127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 5383d14c5d2SYehuda Sadeh 53913d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 54013d1ad16SIlya Dryomov return req; 5413f1af42aSIlya Dryomov } 54213d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 5433f1af42aSIlya Dryomov 5442e59ffd1SIlya Dryomov static int ceph_oloc_encoding_size(const struct ceph_object_locator *oloc) 54530c156d9SYan, Zheng { 54630c156d9SYan, Zheng return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0); 54730c156d9SYan, Zheng } 54830c156d9SYan, Zheng 54913d1ad16SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 55013d1ad16SIlya Dryomov { 55113d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 55213d1ad16SIlya Dryomov struct ceph_msg *msg; 55313d1ad16SIlya Dryomov int msg_size; 5543d14c5d2SYehuda Sadeh 555d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 55630c156d9SYan, Zheng WARN_ON(ceph_oloc_empty(&req->r_base_oloc)); 557d30291b9SIlya Dryomov 55813d1ad16SIlya Dryomov /* create request message */ 5598cb441c0SIlya Dryomov msg_size = CEPH_ENCODING_START_BLK_LEN + 5608cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1; /* spgid */ 5618cb441c0SIlya Dryomov msg_size += 4 + 4 + 4; /* hash, osdmap_epoch, flags */ 5628cb441c0SIlya Dryomov msg_size += CEPH_ENCODING_START_BLK_LEN + 5638cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid); /* reqid */ 5648cb441c0SIlya Dryomov msg_size += sizeof(struct ceph_blkin_trace_info); /* trace */ 5658cb441c0SIlya Dryomov msg_size += 4 + sizeof(struct ceph_timespec); /* client_inc, mtime */ 56630c156d9SYan, Zheng msg_size += CEPH_ENCODING_START_BLK_LEN + 56730c156d9SYan, Zheng ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */ 56813d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 56913d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 570ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 571ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 57213d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 5738cb441c0SIlya Dryomov msg_size += 4 + 8; /* retry_attempt, features */ 574ae458f5aSIlya Dryomov 57513d1ad16SIlya Dryomov if (req->r_mempool) 5763d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 5773d14c5d2SYehuda Sadeh else 57813d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); 57913d1ad16SIlya Dryomov if (!msg) 58013d1ad16SIlya Dryomov return -ENOMEM; 5813d14c5d2SYehuda Sadeh 5823d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 5833d14c5d2SYehuda Sadeh req->r_request = msg; 5843d14c5d2SYehuda Sadeh 58513d1ad16SIlya Dryomov /* create reply message */ 58613d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 587711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 588711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 58913d1ad16SIlya Dryomov 59013d1ad16SIlya Dryomov if (req->r_mempool) 59113d1ad16SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 59213d1ad16SIlya Dryomov else 59313d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); 59413d1ad16SIlya Dryomov if (!msg) 59513d1ad16SIlya Dryomov return -ENOMEM; 59613d1ad16SIlya Dryomov 59713d1ad16SIlya Dryomov req->r_reply = msg; 59813d1ad16SIlya Dryomov 59913d1ad16SIlya Dryomov return 0; 60013d1ad16SIlya Dryomov } 60113d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 6023d14c5d2SYehuda Sadeh 603a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 604a8dd0a37SAlex Elder { 605a8dd0a37SAlex Elder switch (opcode) { 60670b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 60770b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 60870b5bfa3SIlya Dryomov #undef GENERATE_CASE 609a8dd0a37SAlex Elder default: 610a8dd0a37SAlex Elder return false; 611a8dd0a37SAlex Elder } 612a8dd0a37SAlex Elder } 613a8dd0a37SAlex Elder 61433803f33SAlex Elder /* 61533803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 61633803f33SAlex Elder * other information associated with them. It also serves as a 61733803f33SAlex Elder * common init routine for all the other init functions, below. 61833803f33SAlex Elder */ 619c99d2d4aSAlex Elder static struct ceph_osd_req_op * 62049719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 621144cba14SYan, Zheng u16 opcode, u32 flags) 62233803f33SAlex Elder { 623c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 624c99d2d4aSAlex Elder 625c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 62633803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 62733803f33SAlex Elder 628c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 62933803f33SAlex Elder memset(op, 0, sizeof (*op)); 63033803f33SAlex Elder op->op = opcode; 631144cba14SYan, Zheng op->flags = flags; 632c99d2d4aSAlex Elder 633c99d2d4aSAlex Elder return op; 63433803f33SAlex Elder } 63533803f33SAlex Elder 63649719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 637144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 63849719778SAlex Elder { 639144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 64049719778SAlex Elder } 64149719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 64249719778SAlex Elder 643c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 644c99d2d4aSAlex Elder unsigned int which, u16 opcode, 64533803f33SAlex Elder u64 offset, u64 length, 64633803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 64733803f33SAlex Elder { 648144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 649144cba14SYan, Zheng opcode, 0); 65033803f33SAlex Elder size_t payload_len = 0; 65133803f33SAlex Elder 652ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 653e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 654e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 65533803f33SAlex Elder 65633803f33SAlex Elder op->extent.offset = offset; 65733803f33SAlex Elder op->extent.length = length; 65833803f33SAlex Elder op->extent.truncate_size = truncate_size; 65933803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 660e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 66133803f33SAlex Elder payload_len += length; 66233803f33SAlex Elder 663de2aa102SIlya Dryomov op->indata_len = payload_len; 66433803f33SAlex Elder } 66533803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 66633803f33SAlex Elder 667c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 668c99d2d4aSAlex Elder unsigned int which, u64 length) 669e5975c7cSAlex Elder { 670c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 671c99d2d4aSAlex Elder u64 previous; 672c99d2d4aSAlex Elder 673c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 674c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 675c99d2d4aSAlex Elder previous = op->extent.length; 676e5975c7cSAlex Elder 677e5975c7cSAlex Elder if (length == previous) 678e5975c7cSAlex Elder return; /* Nothing to do */ 679e5975c7cSAlex Elder BUG_ON(length > previous); 680e5975c7cSAlex Elder 681e5975c7cSAlex Elder op->extent.length = length; 682d641df81SYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 683de2aa102SIlya Dryomov op->indata_len -= previous - length; 684e5975c7cSAlex Elder } 685e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 686e5975c7cSAlex Elder 6872c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 6882c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 6892c63f49aSYan, Zheng { 6902c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 6912c63f49aSYan, Zheng 6922c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 6932c63f49aSYan, Zheng 6942c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 6952c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 6962c63f49aSYan, Zheng /* dup previous one */ 6972c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 6982c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 6992c63f49aSYan, Zheng op->extent = prev_op->extent; 7002c63f49aSYan, Zheng /* adjust offset */ 7012c63f49aSYan, Zheng op->extent.offset += offset_inc; 7022c63f49aSYan, Zheng op->extent.length -= offset_inc; 7032c63f49aSYan, Zheng 7042c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 7052c63f49aSYan, Zheng op->indata_len -= offset_inc; 7062c63f49aSYan, Zheng } 7072c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 7082c63f49aSYan, Zheng 709c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 71004017e29SAlex Elder u16 opcode, const char *class, const char *method) 71133803f33SAlex Elder { 712144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 713144cba14SYan, Zheng opcode, 0); 7145f562df5SAlex Elder struct ceph_pagelist *pagelist; 71533803f33SAlex Elder size_t payload_len = 0; 71633803f33SAlex Elder size_t size; 71733803f33SAlex Elder 71833803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 71933803f33SAlex Elder 7205f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 7215f562df5SAlex Elder BUG_ON(!pagelist); 7225f562df5SAlex Elder ceph_pagelist_init(pagelist); 7235f562df5SAlex Elder 72433803f33SAlex Elder op->cls.class_name = class; 72533803f33SAlex Elder size = strlen(class); 72633803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 72733803f33SAlex Elder op->cls.class_len = size; 7285f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 72933803f33SAlex Elder payload_len += size; 73033803f33SAlex Elder 73133803f33SAlex Elder op->cls.method_name = method; 73233803f33SAlex Elder size = strlen(method); 73333803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 73433803f33SAlex Elder op->cls.method_len = size; 7355f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 73633803f33SAlex Elder payload_len += size; 73733803f33SAlex Elder 738a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 7395f562df5SAlex Elder 740de2aa102SIlya Dryomov op->indata_len = payload_len; 74133803f33SAlex Elder } 74233803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 7438c042b0dSAlex Elder 744d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 745d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 746d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 747d74b50beSYan, Zheng { 748144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 749144cba14SYan, Zheng opcode, 0); 750d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 751d74b50beSYan, Zheng size_t payload_len; 752d74b50beSYan, Zheng 753d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 754d74b50beSYan, Zheng 755d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 756d74b50beSYan, Zheng if (!pagelist) 757d74b50beSYan, Zheng return -ENOMEM; 758d74b50beSYan, Zheng 759d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 760d74b50beSYan, Zheng 761d74b50beSYan, Zheng payload_len = strlen(name); 762d74b50beSYan, Zheng op->xattr.name_len = payload_len; 763d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 764d74b50beSYan, Zheng 765d74b50beSYan, Zheng op->xattr.value_len = size; 766d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 767d74b50beSYan, Zheng payload_len += size; 768d74b50beSYan, Zheng 769d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 770d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 771d74b50beSYan, Zheng 772d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 773de2aa102SIlya Dryomov op->indata_len = payload_len; 774d74b50beSYan, Zheng return 0; 775d74b50beSYan, Zheng } 776d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 777d74b50beSYan, Zheng 778922dab61SIlya Dryomov /* 779922dab61SIlya Dryomov * @watch_opcode: CEPH_OSD_WATCH_OP_* 780922dab61SIlya Dryomov */ 781922dab61SIlya Dryomov static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, 782922dab61SIlya Dryomov u64 cookie, u8 watch_opcode) 78333803f33SAlex Elder { 784922dab61SIlya Dryomov struct ceph_osd_req_op *op; 78533803f33SAlex Elder 786922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); 78733803f33SAlex Elder op->watch.cookie = cookie; 788922dab61SIlya Dryomov op->watch.op = watch_opcode; 789922dab61SIlya Dryomov op->watch.gen = 0; 79033803f33SAlex Elder } 79133803f33SAlex Elder 792c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 793c647b8a8SIlya Dryomov unsigned int which, 794c647b8a8SIlya Dryomov u64 expected_object_size, 795c647b8a8SIlya Dryomov u64 expected_write_size) 796c647b8a8SIlya Dryomov { 797c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 798144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 799144cba14SYan, Zheng 0); 800c647b8a8SIlya Dryomov 801c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 802c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 803c647b8a8SIlya Dryomov 804c647b8a8SIlya Dryomov /* 805c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 806c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 807c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 808c647b8a8SIlya Dryomov */ 809c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 810c647b8a8SIlya Dryomov } 811c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 812c647b8a8SIlya Dryomov 81390af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 814ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 815ec9123c5SAlex Elder { 816ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 817ec9123c5SAlex Elder 818ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 819ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 820ec9123c5SAlex Elder if (length) 82190af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 822ec9123c5SAlex Elder length, osd_data->alignment); 823ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 824ec9123c5SAlex Elder BUG_ON(!length); 82590af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 826ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 827ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 82890af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 829ec9123c5SAlex Elder #endif 830ec9123c5SAlex Elder } else { 831ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 832ec9123c5SAlex Elder } 833ec9123c5SAlex Elder } 834ec9123c5SAlex Elder 835bb873b53SIlya Dryomov static u32 osd_req_encode_op(struct ceph_osd_op *dst, 836bb873b53SIlya Dryomov const struct ceph_osd_req_op *src) 8373d14c5d2SYehuda Sadeh { 838a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 839a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 840a8dd0a37SAlex Elder 841a8dd0a37SAlex Elder return 0; 842a8dd0a37SAlex Elder } 8433d14c5d2SYehuda Sadeh 844065a68f9SAlex Elder switch (src->op) { 845fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 846fbfab539SAlex Elder break; 8473d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 8483d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 849e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 850ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 851ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 852175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 853175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 8543d14c5d2SYehuda Sadeh dst->extent.truncate_size = 8553d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 8563d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 8573d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 8583d14c5d2SYehuda Sadeh break; 8593d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 8603d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 8613d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 862bb873b53SIlya Dryomov dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 8633d14c5d2SYehuda Sadeh break; 8643d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 8653d14c5d2SYehuda Sadeh break; 866a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 867a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 868922dab61SIlya Dryomov dst->watch.ver = cpu_to_le64(0); 869922dab61SIlya Dryomov dst->watch.op = src->watch.op; 870922dab61SIlya Dryomov dst->watch.gen = cpu_to_le32(src->watch.gen); 871922dab61SIlya Dryomov break; 872922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 873a40c4f10SYehuda Sadeh break; 87419079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 87519079203SIlya Dryomov dst->notify.cookie = cpu_to_le64(src->notify.cookie); 87619079203SIlya Dryomov break; 877a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 878a4ed38d7SDouglas Fuller break; 879c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 880c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 881c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 882c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 883c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 884c647b8a8SIlya Dryomov break; 885d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 886d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 887d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 888d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 889d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 890d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 891d74b50beSYan, Zheng break; 892864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 893864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 894864e9197SYan, Zheng break; 8953d14c5d2SYehuda Sadeh default: 8964c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 8978f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 8984c46459cSAlex Elder WARN_ON(1); 899a8dd0a37SAlex Elder 900a8dd0a37SAlex Elder return 0; 9013d14c5d2SYehuda Sadeh } 9027b25bf5fSIlya Dryomov 903a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 9047b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 905de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 906175face2SAlex Elder 907bb873b53SIlya Dryomov return src->indata_len; 9083d14c5d2SYehuda Sadeh } 9093d14c5d2SYehuda Sadeh 9103d14c5d2SYehuda Sadeh /* 9113d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 9123d14c5d2SYehuda Sadeh * extent as needed. 9133d14c5d2SYehuda Sadeh * 9143d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 9153d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 9163d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 9173d14c5d2SYehuda Sadeh * 9183d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 9193d14c5d2SYehuda Sadeh * data quickly. 9203d14c5d2SYehuda Sadeh */ 9213d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 9223d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 9233d14c5d2SYehuda Sadeh struct ceph_vino vino, 924715e4cd4SYan, Zheng u64 off, u64 *plen, 925715e4cd4SYan, Zheng unsigned int which, int num_ops, 9263d14c5d2SYehuda Sadeh int opcode, int flags, 9273d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 9283d14c5d2SYehuda Sadeh u32 truncate_seq, 9293d14c5d2SYehuda Sadeh u64 truncate_size, 930153e5167SAlex Elder bool use_mempool) 9313d14c5d2SYehuda Sadeh { 9323d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 93375d1c941SAlex Elder u64 objnum = 0; 93475d1c941SAlex Elder u64 objoff = 0; 93575d1c941SAlex Elder u64 objlen = 0; 9366816282dSSage Weil int r; 9373d14c5d2SYehuda Sadeh 938ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 939864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 940864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 9413d14c5d2SYehuda Sadeh 942acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 943ae7ca4a3SAlex Elder GFP_NOFS); 94413d1ad16SIlya Dryomov if (!req) { 94513d1ad16SIlya Dryomov r = -ENOMEM; 94613d1ad16SIlya Dryomov goto fail; 94713d1ad16SIlya Dryomov } 94879528734SAlex Elder 9493d14c5d2SYehuda Sadeh /* calculate max write size */ 950a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 95113d1ad16SIlya Dryomov if (r) 95213d1ad16SIlya Dryomov goto fail; 953a19dadfbSAlex Elder 954864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 955144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 956864e9197SYan, Zheng } else { 9577627151eSYan, Zheng u32 object_size = layout->object_size; 958864e9197SYan, Zheng u32 object_base = off - objoff; 959ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 960d18d1e28SAlex Elder if (truncate_size <= object_base) { 961d18d1e28SAlex Elder truncate_size = 0; 962d18d1e28SAlex Elder } else { 963d18d1e28SAlex Elder truncate_size -= object_base; 964d18d1e28SAlex Elder if (truncate_size > object_size) 965d18d1e28SAlex Elder truncate_size = object_size; 966d18d1e28SAlex Elder } 967ccca4e37SYan, Zheng } 968715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 969b0270324SAlex Elder truncate_size, truncate_seq); 970864e9197SYan, Zheng } 971d18d1e28SAlex Elder 972a1f4020aSJeff Layton req->r_abort_on_full = true; 973bb873b53SIlya Dryomov req->r_flags = flags; 9747627151eSYan, Zheng req->r_base_oloc.pool = layout->pool_id; 97530c156d9SYan, Zheng req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns); 976d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 977dbe0fc41SAlex Elder 978bb873b53SIlya Dryomov req->r_snapid = vino.snap; 979bb873b53SIlya Dryomov if (flags & CEPH_OSD_FLAG_WRITE) 980bb873b53SIlya Dryomov req->r_data_offset = off; 981bb873b53SIlya Dryomov 98213d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 98313d1ad16SIlya Dryomov if (r) 98413d1ad16SIlya Dryomov goto fail; 98513d1ad16SIlya Dryomov 9863d14c5d2SYehuda Sadeh return req; 98713d1ad16SIlya Dryomov 98813d1ad16SIlya Dryomov fail: 98913d1ad16SIlya Dryomov ceph_osdc_put_request(req); 99013d1ad16SIlya Dryomov return ERR_PTR(r); 9913d14c5d2SYehuda Sadeh } 9923d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 9933d14c5d2SYehuda Sadeh 9943d14c5d2SYehuda Sadeh /* 9953d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 9963d14c5d2SYehuda Sadeh */ 997fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 9984609245eSIlya Dryomov DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) 9993d14c5d2SYehuda Sadeh 10000247a0cfSIlya Dryomov static bool osd_homeless(struct ceph_osd *osd) 10010247a0cfSIlya Dryomov { 10020247a0cfSIlya Dryomov return osd->o_osd == CEPH_HOMELESS_OSD; 10030247a0cfSIlya Dryomov } 10040247a0cfSIlya Dryomov 10055aea3dcdSIlya Dryomov static bool osd_registered(struct ceph_osd *osd) 10063d14c5d2SYehuda Sadeh { 10075aea3dcdSIlya Dryomov verify_osdc_locked(osd->o_osdc); 10083d14c5d2SYehuda Sadeh 10095aea3dcdSIlya Dryomov return !RB_EMPTY_NODE(&osd->o_node); 10103d14c5d2SYehuda Sadeh } 10113d14c5d2SYehuda Sadeh 10123d14c5d2SYehuda Sadeh /* 10130247a0cfSIlya Dryomov * Assumes @osd is zero-initialized. 10140247a0cfSIlya Dryomov */ 10150247a0cfSIlya Dryomov static void osd_init(struct ceph_osd *osd) 10160247a0cfSIlya Dryomov { 101702113a0fSElena Reshetova refcount_set(&osd->o_ref, 1); 10180247a0cfSIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 10195aea3dcdSIlya Dryomov osd->o_requests = RB_ROOT; 1020922dab61SIlya Dryomov osd->o_linger_requests = RB_ROOT; 10210247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_osd_lru); 10220247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_keepalive_item); 10230247a0cfSIlya Dryomov osd->o_incarnation = 1; 10245aea3dcdSIlya Dryomov mutex_init(&osd->lock); 10250247a0cfSIlya Dryomov } 10260247a0cfSIlya Dryomov 10270247a0cfSIlya Dryomov static void osd_cleanup(struct ceph_osd *osd) 10280247a0cfSIlya Dryomov { 10290247a0cfSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); 10305aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 1031922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 10320247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_osd_lru)); 10330247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_keepalive_item)); 10340247a0cfSIlya Dryomov 10350247a0cfSIlya Dryomov if (osd->o_auth.authorizer) { 10360247a0cfSIlya Dryomov WARN_ON(osd_homeless(osd)); 10370247a0cfSIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 10380247a0cfSIlya Dryomov } 10390247a0cfSIlya Dryomov } 10400247a0cfSIlya Dryomov 10410247a0cfSIlya Dryomov /* 10423d14c5d2SYehuda Sadeh * Track open sessions with osds. 10433d14c5d2SYehuda Sadeh */ 1044e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10453d14c5d2SYehuda Sadeh { 10463d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10473d14c5d2SYehuda Sadeh 10480247a0cfSIlya Dryomov WARN_ON(onum == CEPH_HOMELESS_OSD); 10490247a0cfSIlya Dryomov 10507a28f59bSIlya Dryomov osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); 10510247a0cfSIlya Dryomov osd_init(osd); 10523d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1053e10006f8SAlex Elder osd->o_osd = onum; 10543d14c5d2SYehuda Sadeh 1055b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10563d14c5d2SYehuda Sadeh 10573d14c5d2SYehuda Sadeh return osd; 10583d14c5d2SYehuda Sadeh } 10593d14c5d2SYehuda Sadeh 10603d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 10613d14c5d2SYehuda Sadeh { 106202113a0fSElena Reshetova if (refcount_inc_not_zero(&osd->o_ref)) { 106302113a0fSElena Reshetova dout("get_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref)-1, 106402113a0fSElena Reshetova refcount_read(&osd->o_ref)); 10653d14c5d2SYehuda Sadeh return osd; 10663d14c5d2SYehuda Sadeh } else { 10673d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10683d14c5d2SYehuda Sadeh return NULL; 10693d14c5d2SYehuda Sadeh } 10703d14c5d2SYehuda Sadeh } 10713d14c5d2SYehuda Sadeh 10723d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 10733d14c5d2SYehuda Sadeh { 107402113a0fSElena Reshetova dout("put_osd %p %d -> %d\n", osd, refcount_read(&osd->o_ref), 107502113a0fSElena Reshetova refcount_read(&osd->o_ref) - 1); 107602113a0fSElena Reshetova if (refcount_dec_and_test(&osd->o_ref)) { 10770247a0cfSIlya Dryomov osd_cleanup(osd); 10783d14c5d2SYehuda Sadeh kfree(osd); 10793d14c5d2SYehuda Sadeh } 10803d14c5d2SYehuda Sadeh } 10813d14c5d2SYehuda Sadeh 1082fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1083fcd00b68SIlya Dryomov 10849dd2845cSIlya Dryomov static void __move_osd_to_lru(struct ceph_osd *osd) 10853d14c5d2SYehuda Sadeh { 10869dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 10879dd2845cSIlya Dryomov 10889dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 10893d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1090bbf37ec3SIlya Dryomov 10919dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 10923d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 10939dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 10949dd2845cSIlya Dryomov 1095a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 10963d14c5d2SYehuda Sadeh } 10973d14c5d2SYehuda Sadeh 10989dd2845cSIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd *osd) 1099bbf37ec3SIlya Dryomov { 11005aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1101922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) 11029dd2845cSIlya Dryomov __move_osd_to_lru(osd); 1103bbf37ec3SIlya Dryomov } 1104bbf37ec3SIlya Dryomov 11053d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 11063d14c5d2SYehuda Sadeh { 11079dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 11089dd2845cSIlya Dryomov 11099dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11109dd2845cSIlya Dryomov 11119dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 11123d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 11133d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11149dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 11153d14c5d2SYehuda Sadeh } 11163d14c5d2SYehuda Sadeh 11173d14c5d2SYehuda Sadeh /* 11185aea3dcdSIlya Dryomov * Close the connection and assign any leftover requests to the 11195aea3dcdSIlya Dryomov * homeless session. 11205aea3dcdSIlya Dryomov */ 11215aea3dcdSIlya Dryomov static void close_osd(struct ceph_osd *osd) 11225aea3dcdSIlya Dryomov { 11235aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 11245aea3dcdSIlya Dryomov struct rb_node *n; 11255aea3dcdSIlya Dryomov 11265aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 11275aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11285aea3dcdSIlya Dryomov 11295aea3dcdSIlya Dryomov ceph_con_close(&osd->o_con); 11305aea3dcdSIlya Dryomov 11315aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 11325aea3dcdSIlya Dryomov struct ceph_osd_request *req = 11335aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 11345aea3dcdSIlya Dryomov 11355aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 11365aea3dcdSIlya Dryomov 11375aea3dcdSIlya Dryomov dout(" reassigning req %p tid %llu\n", req, req->r_tid); 11385aea3dcdSIlya Dryomov unlink_request(osd, req); 11395aea3dcdSIlya Dryomov link_request(&osdc->homeless_osd, req); 11405aea3dcdSIlya Dryomov } 1141922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 1142922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1143922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 1144922dab61SIlya Dryomov 1145922dab61SIlya Dryomov n = rb_next(n); /* unlink_linger() */ 1146922dab61SIlya Dryomov 1147922dab61SIlya Dryomov dout(" reassigning lreq %p linger_id %llu\n", lreq, 1148922dab61SIlya Dryomov lreq->linger_id); 1149922dab61SIlya Dryomov unlink_linger(osd, lreq); 1150922dab61SIlya Dryomov link_linger(&osdc->homeless_osd, lreq); 1151922dab61SIlya Dryomov } 11525aea3dcdSIlya Dryomov 11535aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 11545aea3dcdSIlya Dryomov erase_osd(&osdc->osds, osd); 11555aea3dcdSIlya Dryomov put_osd(osd); 11565aea3dcdSIlya Dryomov } 11575aea3dcdSIlya Dryomov 11585aea3dcdSIlya Dryomov /* 11593d14c5d2SYehuda Sadeh * reset osd connect 11603d14c5d2SYehuda Sadeh */ 11615aea3dcdSIlya Dryomov static int reopen_osd(struct ceph_osd *osd) 11623d14c5d2SYehuda Sadeh { 1163c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 11643d14c5d2SYehuda Sadeh 11655aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11665aea3dcdSIlya Dryomov 11675aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1168922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) { 11695aea3dcdSIlya Dryomov close_osd(osd); 1170c3acb181SAlex Elder return -ENODEV; 1171c3acb181SAlex Elder } 1172c3acb181SAlex Elder 11735aea3dcdSIlya Dryomov peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; 1174c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 11753d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 11765aea3dcdSIlya Dryomov struct rb_node *n; 1177c3acb181SAlex Elder 11783d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 11790b4af2e8SIlya Dryomov "letting msgr retry\n"); 11803d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 11815aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 11825aea3dcdSIlya Dryomov struct ceph_osd_request *req = 11835aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 11843d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 11855aea3dcdSIlya Dryomov } 1186c3acb181SAlex Elder 1187c3acb181SAlex Elder return -EAGAIN; 11883d14c5d2SYehuda Sadeh } 1189c3acb181SAlex Elder 1190c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1191c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1192c3acb181SAlex Elder osd->o_incarnation++; 1193c3acb181SAlex Elder 1194c3acb181SAlex Elder return 0; 11953d14c5d2SYehuda Sadeh } 11963d14c5d2SYehuda Sadeh 11975aea3dcdSIlya Dryomov static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, 11985aea3dcdSIlya Dryomov bool wrlocked) 11993d14c5d2SYehuda Sadeh { 12005aea3dcdSIlya Dryomov struct ceph_osd *osd; 12015aea3dcdSIlya Dryomov 12025aea3dcdSIlya Dryomov if (wrlocked) 12035aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 12045aea3dcdSIlya Dryomov else 12055aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 12065aea3dcdSIlya Dryomov 12075aea3dcdSIlya Dryomov if (o != CEPH_HOMELESS_OSD) 12085aea3dcdSIlya Dryomov osd = lookup_osd(&osdc->osds, o); 12095aea3dcdSIlya Dryomov else 12105aea3dcdSIlya Dryomov osd = &osdc->homeless_osd; 12115aea3dcdSIlya Dryomov if (!osd) { 12125aea3dcdSIlya Dryomov if (!wrlocked) 12135aea3dcdSIlya Dryomov return ERR_PTR(-EAGAIN); 12145aea3dcdSIlya Dryomov 12155aea3dcdSIlya Dryomov osd = create_osd(osdc, o); 12165aea3dcdSIlya Dryomov insert_osd(&osdc->osds, osd); 12175aea3dcdSIlya Dryomov ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, 12185aea3dcdSIlya Dryomov &osdc->osdmap->osd_addr[osd->o_osd]); 12195aea3dcdSIlya Dryomov } 12205aea3dcdSIlya Dryomov 12215aea3dcdSIlya Dryomov dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); 12225aea3dcdSIlya Dryomov return osd; 1223a40c4f10SYehuda Sadeh } 1224a40c4f10SYehuda Sadeh 12253d14c5d2SYehuda Sadeh /* 12265aea3dcdSIlya Dryomov * Create request <-> OSD session relation. 12275aea3dcdSIlya Dryomov * 12285aea3dcdSIlya Dryomov * @req has to be assigned a tid, @osd may be homeless. 12293d14c5d2SYehuda Sadeh */ 12305aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) 12313d14c5d2SYehuda Sadeh { 12325aea3dcdSIlya Dryomov verify_osd_locked(osd); 12335aea3dcdSIlya Dryomov WARN_ON(!req->r_tid || req->r_osd); 12345aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 123535f9f8a0SSage Weil req, req->r_tid); 12365aea3dcdSIlya Dryomov 12375aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 12385aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 12395aea3dcdSIlya Dryomov else 12405aea3dcdSIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 12415aea3dcdSIlya Dryomov 12425aea3dcdSIlya Dryomov get_osd(osd); 12435aea3dcdSIlya Dryomov insert_request(&osd->o_requests, req); 12445aea3dcdSIlya Dryomov req->r_osd = osd; 124535f9f8a0SSage Weil } 124635f9f8a0SSage Weil 12475aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) 12483d14c5d2SYehuda Sadeh { 12495aea3dcdSIlya Dryomov verify_osd_locked(osd); 12505aea3dcdSIlya Dryomov WARN_ON(req->r_osd != osd); 12515aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 12525aea3dcdSIlya Dryomov req, req->r_tid); 12535aea3dcdSIlya Dryomov 12545aea3dcdSIlya Dryomov req->r_osd = NULL; 12555aea3dcdSIlya Dryomov erase_request(&osd->o_requests, req); 12565aea3dcdSIlya Dryomov put_osd(osd); 12575aea3dcdSIlya Dryomov 12585aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 12595aea3dcdSIlya Dryomov maybe_move_osd_to_lru(osd); 12605aea3dcdSIlya Dryomov else 12615aea3dcdSIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 12623d14c5d2SYehuda Sadeh } 12633d14c5d2SYehuda Sadeh 126463244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 126563244fa1SIlya Dryomov { 126663244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 126763244fa1SIlya Dryomov } 126863244fa1SIlya Dryomov 126942c1b124SIlya Dryomov static bool have_pool_full(struct ceph_osd_client *osdc) 127042c1b124SIlya Dryomov { 127142c1b124SIlya Dryomov struct rb_node *n; 127242c1b124SIlya Dryomov 127342c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 127442c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 127542c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 127642c1b124SIlya Dryomov 127742c1b124SIlya Dryomov if (__pool_full(pi)) 127842c1b124SIlya Dryomov return true; 127942c1b124SIlya Dryomov } 128042c1b124SIlya Dryomov 128142c1b124SIlya Dryomov return false; 128242c1b124SIlya Dryomov } 128342c1b124SIlya Dryomov 12845aea3dcdSIlya Dryomov static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) 12855aea3dcdSIlya Dryomov { 12865aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 12875aea3dcdSIlya Dryomov 12885aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 12895aea3dcdSIlya Dryomov if (!pi) 12905aea3dcdSIlya Dryomov return false; 12915aea3dcdSIlya Dryomov 12925aea3dcdSIlya Dryomov return __pool_full(pi); 12935aea3dcdSIlya Dryomov } 12945aea3dcdSIlya Dryomov 12953d14c5d2SYehuda Sadeh /* 1296d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1297d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1298d29adb34SJosh Durgin */ 129963244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 130063244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 130163244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 130263244fa1SIlya Dryomov { 1303b7ec35b3SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 1304b7ec35b3SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 1305b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 130663244fa1SIlya Dryomov __pool_full(pi); 130763244fa1SIlya Dryomov 130863244fa1SIlya Dryomov WARN_ON(pi->id != t->base_oloc.pool); 130958eb7932SJeff Layton return ((t->flags & CEPH_OSD_FLAG_READ) && pauserd) || 131058eb7932SJeff Layton ((t->flags & CEPH_OSD_FLAG_WRITE) && pausewr) || 131158eb7932SJeff Layton (osdc->osdmap->epoch < osdc->epoch_barrier); 131263244fa1SIlya Dryomov } 131363244fa1SIlya Dryomov 131463244fa1SIlya Dryomov enum calc_target_result { 131563244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 131663244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 131763244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 131863244fa1SIlya Dryomov }; 131963244fa1SIlya Dryomov 132063244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 132163244fa1SIlya Dryomov struct ceph_osd_request_target *t, 13227de030d6SIlya Dryomov struct ceph_connection *con, 132363244fa1SIlya Dryomov bool any_change) 132463244fa1SIlya Dryomov { 132563244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 132663244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 132763244fa1SIlya Dryomov struct ceph_osds up, acting; 132863244fa1SIlya Dryomov bool force_resend = false; 132984ed45dfSIlya Dryomov bool unpaused = false; 133084ed45dfSIlya Dryomov bool legacy_change; 13317de030d6SIlya Dryomov bool split = false; 133263244fa1SIlya Dryomov bool need_check_tiering = false; 1333b7ec35b3SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); 133463244fa1SIlya Dryomov enum calc_target_result ct_res; 133563244fa1SIlya Dryomov int ret; 133663244fa1SIlya Dryomov 133763244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 133863244fa1SIlya Dryomov if (!pi) { 133963244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 134063244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 134163244fa1SIlya Dryomov goto out; 134263244fa1SIlya Dryomov } 134363244fa1SIlya Dryomov 134463244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 1345dc93e0e2SIlya Dryomov if (t->last_force_resend < pi->last_force_request_resend) { 1346dc93e0e2SIlya Dryomov t->last_force_resend = pi->last_force_request_resend; 134763244fa1SIlya Dryomov force_resend = true; 1348dc93e0e2SIlya Dryomov } else if (t->last_force_resend == 0) { 134963244fa1SIlya Dryomov force_resend = true; 135063244fa1SIlya Dryomov } 135163244fa1SIlya Dryomov } 135263244fa1SIlya Dryomov if (ceph_oid_empty(&t->target_oid) || force_resend) { 135363244fa1SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 135463244fa1SIlya Dryomov need_check_tiering = true; 135563244fa1SIlya Dryomov } 135663244fa1SIlya Dryomov if (ceph_oloc_empty(&t->target_oloc) || force_resend) { 135763244fa1SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 135863244fa1SIlya Dryomov need_check_tiering = true; 135963244fa1SIlya Dryomov } 136063244fa1SIlya Dryomov 136163244fa1SIlya Dryomov if (need_check_tiering && 136263244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 136363244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) 136463244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 136563244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) 136663244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 136763244fa1SIlya Dryomov } 136863244fa1SIlya Dryomov 136963244fa1SIlya Dryomov ret = ceph_object_locator_to_pg(osdc->osdmap, &t->target_oid, 137063244fa1SIlya Dryomov &t->target_oloc, &pgid); 137163244fa1SIlya Dryomov if (ret) { 137263244fa1SIlya Dryomov WARN_ON(ret != -ENOENT); 137363244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 137463244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 137563244fa1SIlya Dryomov goto out; 137663244fa1SIlya Dryomov } 137763244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 137863244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 137963244fa1SIlya Dryomov 138063244fa1SIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting); 138163244fa1SIlya Dryomov if (any_change && 138263244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 138363244fa1SIlya Dryomov &acting, 138463244fa1SIlya Dryomov &t->up, 138563244fa1SIlya Dryomov &up, 138663244fa1SIlya Dryomov t->size, 138763244fa1SIlya Dryomov pi->size, 138863244fa1SIlya Dryomov t->min_size, 138963244fa1SIlya Dryomov pi->min_size, 139063244fa1SIlya Dryomov t->pg_num, 139163244fa1SIlya Dryomov pi->pg_num, 139263244fa1SIlya Dryomov t->sort_bitwise, 139363244fa1SIlya Dryomov sort_bitwise, 139463244fa1SIlya Dryomov &last_pgid)) 139563244fa1SIlya Dryomov force_resend = true; 139663244fa1SIlya Dryomov 139763244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 139863244fa1SIlya Dryomov t->paused = false; 139984ed45dfSIlya Dryomov unpaused = true; 140063244fa1SIlya Dryomov } 140184ed45dfSIlya Dryomov legacy_change = ceph_pg_compare(&t->pgid, &pgid) || 140284ed45dfSIlya Dryomov ceph_osds_changed(&t->acting, &acting, any_change); 14037de030d6SIlya Dryomov if (t->pg_num) 14047de030d6SIlya Dryomov split = ceph_pg_is_split(&last_pgid, t->pg_num, pi->pg_num); 140563244fa1SIlya Dryomov 14067de030d6SIlya Dryomov if (legacy_change || force_resend || split) { 140763244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 1408dc98ff72SIlya Dryomov ceph_pg_to_primary_shard(osdc->osdmap, &pgid, &t->spgid); 140963244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 141063244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 141163244fa1SIlya Dryomov t->size = pi->size; 141263244fa1SIlya Dryomov t->min_size = pi->min_size; 141363244fa1SIlya Dryomov t->pg_num = pi->pg_num; 141463244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 141563244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 141663244fa1SIlya Dryomov 141763244fa1SIlya Dryomov t->osd = acting.primary; 141863244fa1SIlya Dryomov } 141963244fa1SIlya Dryomov 14207de030d6SIlya Dryomov if (unpaused || legacy_change || force_resend || 14217de030d6SIlya Dryomov (split && con && CEPH_HAVE_FEATURE(con->peer_features, 14227de030d6SIlya Dryomov RESEND_ON_SPLIT))) 142384ed45dfSIlya Dryomov ct_res = CALC_TARGET_NEED_RESEND; 142484ed45dfSIlya Dryomov else 142584ed45dfSIlya Dryomov ct_res = CALC_TARGET_NO_ACTION; 142684ed45dfSIlya Dryomov 142763244fa1SIlya Dryomov out: 142863244fa1SIlya Dryomov dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); 142963244fa1SIlya Dryomov return ct_res; 143063244fa1SIlya Dryomov } 143163244fa1SIlya Dryomov 1432bb873b53SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req, 1433bb873b53SIlya Dryomov struct ceph_msg *msg) 14343d14c5d2SYehuda Sadeh { 1435bb873b53SIlya Dryomov u32 data_len = 0; 1436bb873b53SIlya Dryomov int i; 14373d14c5d2SYehuda Sadeh 1438bb873b53SIlya Dryomov if (!list_empty(&msg->data)) 1439bb873b53SIlya Dryomov return; 14403d14c5d2SYehuda Sadeh 1441bb873b53SIlya Dryomov WARN_ON(msg->data_length); 1442bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1443bb873b53SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[i]; 1444bb873b53SIlya Dryomov 1445bb873b53SIlya Dryomov switch (op->op) { 1446bb873b53SIlya Dryomov /* request */ 1447bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 1448bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 1449bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 1450bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->extent.osd_data); 1451bb873b53SIlya Dryomov break; 1452bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 1453bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 1454bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 1455bb873b53SIlya Dryomov op->xattr.value_len); 1456bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->xattr.osd_data); 1457bb873b53SIlya Dryomov break; 1458922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 1459922dab61SIlya Dryomov ceph_osdc_msg_data_add(msg, 1460922dab61SIlya Dryomov &op->notify_ack.request_data); 1461922dab61SIlya Dryomov break; 1462bb873b53SIlya Dryomov 1463bb873b53SIlya Dryomov /* reply */ 1464bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 1465bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1466bb873b53SIlya Dryomov &op->raw_data_in); 1467bb873b53SIlya Dryomov break; 1468bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 1469bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1470bb873b53SIlya Dryomov &op->extent.osd_data); 1471bb873b53SIlya Dryomov break; 1472a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 1473a4ed38d7SDouglas Fuller ceph_osdc_msg_data_add(req->r_reply, 1474a4ed38d7SDouglas Fuller &op->list_watchers.response_data); 1475a4ed38d7SDouglas Fuller break; 1476bb873b53SIlya Dryomov 1477bb873b53SIlya Dryomov /* both */ 1478bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 1479bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 1480bb873b53SIlya Dryomov op->cls.method_len + 1481bb873b53SIlya Dryomov op->cls.indata_len); 1482bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_info); 1483bb873b53SIlya Dryomov /* optional, can be NONE */ 1484bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_data); 1485bb873b53SIlya Dryomov /* optional, can be NONE */ 1486bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1487bb873b53SIlya Dryomov &op->cls.response_data); 1488bb873b53SIlya Dryomov break; 148919079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 149019079203SIlya Dryomov ceph_osdc_msg_data_add(msg, 149119079203SIlya Dryomov &op->notify.request_data); 149219079203SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 149319079203SIlya Dryomov &op->notify.response_data); 149419079203SIlya Dryomov break; 1495bb873b53SIlya Dryomov } 1496bb873b53SIlya Dryomov 1497bb873b53SIlya Dryomov data_len += op->indata_len; 1498bb873b53SIlya Dryomov } 1499bb873b53SIlya Dryomov 1500bb873b53SIlya Dryomov WARN_ON(data_len != msg->data_length); 1501bb873b53SIlya Dryomov } 1502bb873b53SIlya Dryomov 15032e59ffd1SIlya Dryomov static void encode_pgid(void **p, const struct ceph_pg *pgid) 15042e59ffd1SIlya Dryomov { 15052e59ffd1SIlya Dryomov ceph_encode_8(p, 1); 15062e59ffd1SIlya Dryomov ceph_encode_64(p, pgid->pool); 15072e59ffd1SIlya Dryomov ceph_encode_32(p, pgid->seed); 15082e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 15092e59ffd1SIlya Dryomov } 15102e59ffd1SIlya Dryomov 15118cb441c0SIlya Dryomov static void encode_spgid(void **p, const struct ceph_spg *spgid) 15128cb441c0SIlya Dryomov { 15138cb441c0SIlya Dryomov ceph_start_encoding(p, 1, 1, CEPH_PGID_ENCODING_LEN + 1); 15148cb441c0SIlya Dryomov encode_pgid(p, &spgid->pgid); 15158cb441c0SIlya Dryomov ceph_encode_8(p, spgid->shard); 15168cb441c0SIlya Dryomov } 15178cb441c0SIlya Dryomov 15182e59ffd1SIlya Dryomov static void encode_oloc(void **p, void *end, 15192e59ffd1SIlya Dryomov const struct ceph_object_locator *oloc) 15202e59ffd1SIlya Dryomov { 15212e59ffd1SIlya Dryomov ceph_start_encoding(p, 5, 4, ceph_oloc_encoding_size(oloc)); 15222e59ffd1SIlya Dryomov ceph_encode_64(p, oloc->pool); 15232e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 15242e59ffd1SIlya Dryomov ceph_encode_32(p, 0); /* key len */ 15252e59ffd1SIlya Dryomov if (oloc->pool_ns) 15262e59ffd1SIlya Dryomov ceph_encode_string(p, end, oloc->pool_ns->str, 15272e59ffd1SIlya Dryomov oloc->pool_ns->len); 15282e59ffd1SIlya Dryomov else 15292e59ffd1SIlya Dryomov ceph_encode_32(p, 0); 15302e59ffd1SIlya Dryomov } 15312e59ffd1SIlya Dryomov 15328cb441c0SIlya Dryomov static void encode_request_partial(struct ceph_osd_request *req, 15338cb441c0SIlya Dryomov struct ceph_msg *msg) 1534bb873b53SIlya Dryomov { 1535bb873b53SIlya Dryomov void *p = msg->front.iov_base; 1536bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 1537bb873b53SIlya Dryomov u32 data_len = 0; 1538bb873b53SIlya Dryomov int i; 1539bb873b53SIlya Dryomov 1540bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 1541bb873b53SIlya Dryomov /* snapshots aren't writeable */ 1542bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 1543bb873b53SIlya Dryomov } else { 1544bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 1545bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 1546bb873b53SIlya Dryomov } 1547bb873b53SIlya Dryomov 1548bb873b53SIlya Dryomov setup_request_data(req, msg); 1549bb873b53SIlya Dryomov 15508cb441c0SIlya Dryomov encode_spgid(&p, &req->r_t.spgid); /* actual spg */ 15518cb441c0SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); /* raw hash */ 1552bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 1553bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 15548cb441c0SIlya Dryomov 15558cb441c0SIlya Dryomov /* reqid */ 15568cb441c0SIlya Dryomov ceph_start_encoding(&p, 2, 2, sizeof(struct ceph_osd_reqid)); 15578cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_osd_reqid)); 15588cb441c0SIlya Dryomov p += sizeof(struct ceph_osd_reqid); 15598cb441c0SIlya Dryomov 15608cb441c0SIlya Dryomov /* trace */ 15618cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_blkin_trace_info)); 15628cb441c0SIlya Dryomov p += sizeof(struct ceph_blkin_trace_info); 15638cb441c0SIlya Dryomov 15648cb441c0SIlya Dryomov ceph_encode_32(&p, 0); /* client_inc, always 0 */ 1565bb873b53SIlya Dryomov ceph_encode_timespec(p, &req->r_mtime); 1566bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 1567aa26d662SJeff Layton 15682e59ffd1SIlya Dryomov encode_oloc(&p, end, &req->r_t.target_oloc); 15692e59ffd1SIlya Dryomov ceph_encode_string(&p, end, req->r_t.target_oid.name, 15702e59ffd1SIlya Dryomov req->r_t.target_oid.name_len); 1571bb873b53SIlya Dryomov 1572bb873b53SIlya Dryomov /* ops, can imply data */ 1573bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 1574bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1575bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 1576bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 1577bb873b53SIlya Dryomov } 1578bb873b53SIlya Dryomov 1579bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 1580bb873b53SIlya Dryomov if (req->r_snapc) { 1581bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 1582bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 1583bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 1584bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 1585bb873b53SIlya Dryomov } else { 1586bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 1587bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 1588bb873b53SIlya Dryomov } 1589bb873b53SIlya Dryomov 1590bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 15918cb441c0SIlya Dryomov BUG_ON(p != end - 8); /* space for features */ 1592bb873b53SIlya Dryomov 15938cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(8); /* MOSDOp v8 */ 15948cb441c0SIlya Dryomov /* front_len is finalized in encode_request_finish() */ 1595bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 1596bb873b53SIlya Dryomov /* 1597bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 1598bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 1599bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 1600bb873b53SIlya Dryomov */ 1601bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 1602bb873b53SIlya Dryomov 16038cb441c0SIlya Dryomov dout("%s req %p msg %p oid %s oid_len %d\n", __func__, req, msg, 16048cb441c0SIlya Dryomov req->r_t.target_oid.name, req->r_t.target_oid.name_len); 16058cb441c0SIlya Dryomov } 16068cb441c0SIlya Dryomov 16078cb441c0SIlya Dryomov static void encode_request_finish(struct ceph_msg *msg) 16088cb441c0SIlya Dryomov { 16098cb441c0SIlya Dryomov void *p = msg->front.iov_base; 16108cb441c0SIlya Dryomov void *const end = p + msg->front_alloc_len; 16118cb441c0SIlya Dryomov 16128cb441c0SIlya Dryomov if (CEPH_HAVE_FEATURE(msg->con->peer_features, RESEND_ON_SPLIT)) { 16138cb441c0SIlya Dryomov /* luminous OSD -- encode features and be done */ 16148cb441c0SIlya Dryomov p = end - 8; 16158cb441c0SIlya Dryomov ceph_encode_64(&p, msg->con->peer_features); 16168cb441c0SIlya Dryomov } else { 16178cb441c0SIlya Dryomov struct { 16188cb441c0SIlya Dryomov char spgid[CEPH_ENCODING_START_BLK_LEN + 16198cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1]; 16208cb441c0SIlya Dryomov __le32 hash; 16218cb441c0SIlya Dryomov __le32 epoch; 16228cb441c0SIlya Dryomov __le32 flags; 16238cb441c0SIlya Dryomov char reqid[CEPH_ENCODING_START_BLK_LEN + 16248cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid)]; 16258cb441c0SIlya Dryomov char trace[sizeof(struct ceph_blkin_trace_info)]; 16268cb441c0SIlya Dryomov __le32 client_inc; 16278cb441c0SIlya Dryomov struct ceph_timespec mtime; 16288cb441c0SIlya Dryomov } __packed head; 16298cb441c0SIlya Dryomov struct ceph_pg pgid; 16308cb441c0SIlya Dryomov void *oloc, *oid, *tail; 16318cb441c0SIlya Dryomov int oloc_len, oid_len, tail_len; 16328cb441c0SIlya Dryomov int len; 16338cb441c0SIlya Dryomov 16348cb441c0SIlya Dryomov /* 16358cb441c0SIlya Dryomov * Pre-luminous OSD -- reencode v8 into v4 using @head 16368cb441c0SIlya Dryomov * as a temporary buffer. Encode the raw PG; the rest 16378cb441c0SIlya Dryomov * is just a matter of moving oloc, oid and tail blobs 16388cb441c0SIlya Dryomov * around. 16398cb441c0SIlya Dryomov */ 16408cb441c0SIlya Dryomov memcpy(&head, p, sizeof(head)); 16418cb441c0SIlya Dryomov p += sizeof(head); 16428cb441c0SIlya Dryomov 16438cb441c0SIlya Dryomov oloc = p; 16448cb441c0SIlya Dryomov p += CEPH_ENCODING_START_BLK_LEN; 16458cb441c0SIlya Dryomov pgid.pool = ceph_decode_64(&p); 16468cb441c0SIlya Dryomov p += 4 + 4; /* preferred, key len */ 16478cb441c0SIlya Dryomov len = ceph_decode_32(&p); 16488cb441c0SIlya Dryomov p += len; /* nspace */ 16498cb441c0SIlya Dryomov oloc_len = p - oloc; 16508cb441c0SIlya Dryomov 16518cb441c0SIlya Dryomov oid = p; 16528cb441c0SIlya Dryomov len = ceph_decode_32(&p); 16538cb441c0SIlya Dryomov p += len; 16548cb441c0SIlya Dryomov oid_len = p - oid; 16558cb441c0SIlya Dryomov 16568cb441c0SIlya Dryomov tail = p; 16578cb441c0SIlya Dryomov tail_len = (end - p) - 8; 16588cb441c0SIlya Dryomov 16598cb441c0SIlya Dryomov p = msg->front.iov_base; 16608cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.client_inc, sizeof(head.client_inc)); 16618cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.epoch, sizeof(head.epoch)); 16628cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.flags, sizeof(head.flags)); 16638cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.mtime, sizeof(head.mtime)); 16648cb441c0SIlya Dryomov 16658cb441c0SIlya Dryomov /* reassert_version */ 16668cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_eversion)); 16678cb441c0SIlya Dryomov p += sizeof(struct ceph_eversion); 16688cb441c0SIlya Dryomov 16698cb441c0SIlya Dryomov BUG_ON(p >= oloc); 16708cb441c0SIlya Dryomov memmove(p, oloc, oloc_len); 16718cb441c0SIlya Dryomov p += oloc_len; 16728cb441c0SIlya Dryomov 16738cb441c0SIlya Dryomov pgid.seed = le32_to_cpu(head.hash); 16748cb441c0SIlya Dryomov encode_pgid(&p, &pgid); /* raw pg */ 16758cb441c0SIlya Dryomov 16768cb441c0SIlya Dryomov BUG_ON(p >= oid); 16778cb441c0SIlya Dryomov memmove(p, oid, oid_len); 16788cb441c0SIlya Dryomov p += oid_len; 16798cb441c0SIlya Dryomov 16808cb441c0SIlya Dryomov /* tail -- ops, snapid, snapc, retry_attempt */ 16818cb441c0SIlya Dryomov BUG_ON(p >= tail); 16828cb441c0SIlya Dryomov memmove(p, tail, tail_len); 16838cb441c0SIlya Dryomov p += tail_len; 16848cb441c0SIlya Dryomov 16858cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 16868cb441c0SIlya Dryomov } 16878cb441c0SIlya Dryomov 16888cb441c0SIlya Dryomov BUG_ON(p > end); 16898cb441c0SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 16908cb441c0SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 16918cb441c0SIlya Dryomov 16928cb441c0SIlya Dryomov dout("%s msg %p tid %llu %u+%u+%u v%d\n", __func__, msg, 16938cb441c0SIlya Dryomov le64_to_cpu(msg->hdr.tid), le32_to_cpu(msg->hdr.front_len), 16948cb441c0SIlya Dryomov le32_to_cpu(msg->hdr.middle_len), le32_to_cpu(msg->hdr.data_len), 16958cb441c0SIlya Dryomov le16_to_cpu(msg->hdr.version)); 1696bb873b53SIlya Dryomov } 1697bb873b53SIlya Dryomov 1698bb873b53SIlya Dryomov /* 1699bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 1700bb873b53SIlya Dryomov */ 1701bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 1702bb873b53SIlya Dryomov { 1703bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 1704bb873b53SIlya Dryomov 17055aea3dcdSIlya Dryomov verify_osd_locked(osd); 1706bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 1707bb873b53SIlya Dryomov 17085aea3dcdSIlya Dryomov /* 17095aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 17105aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 17115aea3dcdSIlya Dryomov */ 17125aea3dcdSIlya Dryomov if (req->r_sent) 17135aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 17145aea3dcdSIlya Dryomov 1715bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 1716bb873b53SIlya Dryomov if (req->r_attempts) 1717bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 1718bb873b53SIlya Dryomov else 1719bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 1720bb873b53SIlya Dryomov 17218cb441c0SIlya Dryomov encode_request_partial(req, req->r_request); 1722bb873b53SIlya Dryomov 1723dc98ff72SIlya Dryomov dout("%s req %p tid %llu to pgid %llu.%x spgid %llu.%xs%d osd%d flags 0x%x attempt %d\n", 1724bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 1725dc98ff72SIlya Dryomov req->r_t.spgid.pgid.pool, req->r_t.spgid.pgid.seed, 1726dc98ff72SIlya Dryomov req->r_t.spgid.shard, osd->o_osd, req->r_flags, req->r_attempts); 1727bb873b53SIlya Dryomov 1728bb873b53SIlya Dryomov req->r_t.paused = false; 17293d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1730bb873b53SIlya Dryomov req->r_attempts++; 17313d14c5d2SYehuda Sadeh 1732bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 1733bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 1734bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 17353d14c5d2SYehuda Sadeh } 17363d14c5d2SYehuda Sadeh 173742c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 173842c1b124SIlya Dryomov { 173942c1b124SIlya Dryomov bool continuous = false; 174042c1b124SIlya Dryomov 17415aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 174242c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 174342c1b124SIlya Dryomov 1744b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 1745b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || 1746b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 174742c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 174842c1b124SIlya Dryomov continuous = true; 174942c1b124SIlya Dryomov } else { 175042c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 175142c1b124SIlya Dryomov } 175242c1b124SIlya Dryomov 175342c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 175442c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 175542c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 175642c1b124SIlya Dryomov } 175742c1b124SIlya Dryomov 1758a1f4020aSJeff Layton static void complete_request(struct ceph_osd_request *req, int err); 17594609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req); 17604609245eSIlya Dryomov 17615aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 17620bbfdfe8SIlya Dryomov { 17635aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 17645aea3dcdSIlya Dryomov struct ceph_osd *osd; 17654609245eSIlya Dryomov enum calc_target_result ct_res; 17665aea3dcdSIlya Dryomov bool need_send = false; 17675aea3dcdSIlya Dryomov bool promoted = false; 1768a1f4020aSJeff Layton bool need_abort = false; 17690bbfdfe8SIlya Dryomov 1770b18b9550SIlya Dryomov WARN_ON(req->r_tid); 17715aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 17725aea3dcdSIlya Dryomov 17735aea3dcdSIlya Dryomov again: 17747de030d6SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, NULL, false); 17754609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) 17764609245eSIlya Dryomov goto promote; 17774609245eSIlya Dryomov 17785aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 17795aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 17805aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 17815aea3dcdSIlya Dryomov goto promote; 17825aea3dcdSIlya Dryomov } 17835aea3dcdSIlya Dryomov 178458eb7932SJeff Layton if (osdc->osdmap->epoch < osdc->epoch_barrier) { 178558eb7932SJeff Layton dout("req %p epoch %u barrier %u\n", req, osdc->osdmap->epoch, 178658eb7932SJeff Layton osdc->epoch_barrier); 178758eb7932SJeff Layton req->r_t.paused = true; 178858eb7932SJeff Layton maybe_request_map(osdc); 178958eb7932SJeff Layton } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 1790b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 17915aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 17925aea3dcdSIlya Dryomov req->r_t.paused = true; 17935aea3dcdSIlya Dryomov maybe_request_map(osdc); 17945aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 1795b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 17965aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 17975aea3dcdSIlya Dryomov req->r_t.paused = true; 17985aea3dcdSIlya Dryomov maybe_request_map(osdc); 17995aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 18005aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 18015aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 1802b7ec35b3SIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 18035aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 18045aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 18055aea3dcdSIlya Dryomov pr_warn_ratelimited("FULL or reached pool quota\n"); 18065aea3dcdSIlya Dryomov req->r_t.paused = true; 18075aea3dcdSIlya Dryomov maybe_request_map(osdc); 1808a1f4020aSJeff Layton if (req->r_abort_on_full) 1809a1f4020aSJeff Layton need_abort = true; 18105aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 18115aea3dcdSIlya Dryomov need_send = true; 18120bbfdfe8SIlya Dryomov } else { 18135aea3dcdSIlya Dryomov maybe_request_map(osdc); 18140bbfdfe8SIlya Dryomov } 18150bbfdfe8SIlya Dryomov 18165aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 18175aea3dcdSIlya Dryomov /* 18185aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 18195aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 18205aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 18215aea3dcdSIlya Dryomov */ 18225aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 18235aea3dcdSIlya Dryomov link_request(osd, req); 18245aea3dcdSIlya Dryomov if (need_send) 18255aea3dcdSIlya Dryomov send_request(req); 1826a1f4020aSJeff Layton else if (need_abort) 1827a1f4020aSJeff Layton complete_request(req, -ENOSPC); 18285aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 18295aea3dcdSIlya Dryomov 18304609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) 18314609245eSIlya Dryomov send_map_check(req); 18324609245eSIlya Dryomov 18335aea3dcdSIlya Dryomov if (promoted) 18345aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 18355aea3dcdSIlya Dryomov return; 18365aea3dcdSIlya Dryomov 18375aea3dcdSIlya Dryomov promote: 18385aea3dcdSIlya Dryomov up_read(&osdc->lock); 18395aea3dcdSIlya Dryomov down_write(&osdc->lock); 18405aea3dcdSIlya Dryomov wrlocked = true; 18415aea3dcdSIlya Dryomov promoted = true; 18425aea3dcdSIlya Dryomov goto again; 18430bbfdfe8SIlya Dryomov } 18440bbfdfe8SIlya Dryomov 18455aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 18465aea3dcdSIlya Dryomov { 184754ea0046SIlya Dryomov WARN_ON(req->r_flags & (CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK)); 1848b18b9550SIlya Dryomov WARN_ON(!(req->r_flags & (CEPH_OSD_FLAG_READ | CEPH_OSD_FLAG_WRITE))); 18495aea3dcdSIlya Dryomov 1850b18b9550SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ONDISK; 18515aea3dcdSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 18527cc5e38fSIlya Dryomov 18537cc5e38fSIlya Dryomov req->r_start_stamp = jiffies; 18545aea3dcdSIlya Dryomov } 18555aea3dcdSIlya Dryomov 18565aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 18575aea3dcdSIlya Dryomov { 18585aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 18595aea3dcdSIlya Dryomov account_request(req); 18605aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 18615aea3dcdSIlya Dryomov } 18625aea3dcdSIlya Dryomov 186345ee2c1dSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 18645aea3dcdSIlya Dryomov { 18655aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 18665aea3dcdSIlya Dryomov struct ceph_osd *osd = req->r_osd; 18675aea3dcdSIlya Dryomov 18685aea3dcdSIlya Dryomov verify_osd_locked(osd); 18695aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 18705aea3dcdSIlya Dryomov 18714609245eSIlya Dryomov WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); 18725aea3dcdSIlya Dryomov unlink_request(osd, req); 18735aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 18745aea3dcdSIlya Dryomov 18755aea3dcdSIlya Dryomov /* 18765aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 18775aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 18785aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 18795aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 18805aea3dcdSIlya Dryomov */ 18815aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 18825aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 18835aea3dcdSIlya Dryomov } 18845aea3dcdSIlya Dryomov 1885fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 1886fe5da05eSIlya Dryomov { 1887b18b9550SIlya Dryomov if (req->r_callback) { 1888b18b9550SIlya Dryomov dout("%s req %p tid %llu cb %pf result %d\n", __func__, req, 1889b18b9550SIlya Dryomov req->r_tid, req->r_callback, req->r_result); 1890fe5da05eSIlya Dryomov req->r_callback(req); 1891b18b9550SIlya Dryomov } 1892fe5da05eSIlya Dryomov } 1893fe5da05eSIlya Dryomov 18944609245eSIlya Dryomov /* 1895b18b9550SIlya Dryomov * This is open-coded in handle_reply(). 18964609245eSIlya Dryomov */ 18974609245eSIlya Dryomov static void complete_request(struct ceph_osd_request *req, int err) 18984609245eSIlya Dryomov { 18994609245eSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 19004609245eSIlya Dryomov 19014609245eSIlya Dryomov req->r_result = err; 190245ee2c1dSIlya Dryomov finish_request(req); 19034609245eSIlya Dryomov __complete_request(req); 1904b18b9550SIlya Dryomov complete_all(&req->r_completion); 19054609245eSIlya Dryomov ceph_osdc_put_request(req); 19064609245eSIlya Dryomov } 19074609245eSIlya Dryomov 19084609245eSIlya Dryomov static void cancel_map_check(struct ceph_osd_request *req) 19094609245eSIlya Dryomov { 19104609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 19114609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 19124609245eSIlya Dryomov 19134609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 19144609245eSIlya Dryomov 19154609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 19164609245eSIlya Dryomov if (!lookup_req) 19174609245eSIlya Dryomov return; 19184609245eSIlya Dryomov 19194609245eSIlya Dryomov WARN_ON(lookup_req != req); 19204609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 19214609245eSIlya Dryomov ceph_osdc_put_request(req); 19224609245eSIlya Dryomov } 19234609245eSIlya Dryomov 19245aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 19255aea3dcdSIlya Dryomov { 19265aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 19275aea3dcdSIlya Dryomov 19284609245eSIlya Dryomov cancel_map_check(req); 192945ee2c1dSIlya Dryomov finish_request(req); 1930b18b9550SIlya Dryomov complete_all(&req->r_completion); 1931c297eb42SIlya Dryomov ceph_osdc_put_request(req); 19325aea3dcdSIlya Dryomov } 19335aea3dcdSIlya Dryomov 19347cc5e38fSIlya Dryomov static void abort_request(struct ceph_osd_request *req, int err) 19357cc5e38fSIlya Dryomov { 19367cc5e38fSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 19377cc5e38fSIlya Dryomov 19387cc5e38fSIlya Dryomov cancel_map_check(req); 19397cc5e38fSIlya Dryomov complete_request(req, err); 19407cc5e38fSIlya Dryomov } 19417cc5e38fSIlya Dryomov 194258eb7932SJeff Layton static void update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 194358eb7932SJeff Layton { 194458eb7932SJeff Layton if (likely(eb > osdc->epoch_barrier)) { 194558eb7932SJeff Layton dout("updating epoch_barrier from %u to %u\n", 194658eb7932SJeff Layton osdc->epoch_barrier, eb); 194758eb7932SJeff Layton osdc->epoch_barrier = eb; 194858eb7932SJeff Layton /* Request map if we're not to the barrier yet */ 194958eb7932SJeff Layton if (eb > osdc->osdmap->epoch) 195058eb7932SJeff Layton maybe_request_map(osdc); 195158eb7932SJeff Layton } 195258eb7932SJeff Layton } 195358eb7932SJeff Layton 195458eb7932SJeff Layton void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 195558eb7932SJeff Layton { 195658eb7932SJeff Layton down_read(&osdc->lock); 195758eb7932SJeff Layton if (unlikely(eb > osdc->epoch_barrier)) { 195858eb7932SJeff Layton up_read(&osdc->lock); 195958eb7932SJeff Layton down_write(&osdc->lock); 196058eb7932SJeff Layton update_epoch_barrier(osdc, eb); 196158eb7932SJeff Layton up_write(&osdc->lock); 196258eb7932SJeff Layton } else { 196358eb7932SJeff Layton up_read(&osdc->lock); 196458eb7932SJeff Layton } 196558eb7932SJeff Layton } 196658eb7932SJeff Layton EXPORT_SYMBOL(ceph_osdc_update_epoch_barrier); 196758eb7932SJeff Layton 1968fc36d0a4SJeff Layton /* 1969fc36d0a4SJeff Layton * Drop all pending requests that are stalled waiting on a full condition to 197058eb7932SJeff Layton * clear, and complete them with ENOSPC as the return code. Set the 197158eb7932SJeff Layton * osdc->epoch_barrier to the latest map epoch that we've seen if any were 197258eb7932SJeff Layton * cancelled. 1973fc36d0a4SJeff Layton */ 1974fc36d0a4SJeff Layton static void ceph_osdc_abort_on_full(struct ceph_osd_client *osdc) 1975fc36d0a4SJeff Layton { 1976fc36d0a4SJeff Layton struct rb_node *n; 197758eb7932SJeff Layton bool victims = false; 1978fc36d0a4SJeff Layton 1979fc36d0a4SJeff Layton dout("enter abort_on_full\n"); 1980fc36d0a4SJeff Layton 1981fc36d0a4SJeff Layton if (!ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) && !have_pool_full(osdc)) 1982fc36d0a4SJeff Layton goto out; 1983fc36d0a4SJeff Layton 198458eb7932SJeff Layton /* Scan list and see if there is anything to abort */ 198558eb7932SJeff Layton for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 198658eb7932SJeff Layton struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 198758eb7932SJeff Layton struct rb_node *m; 198858eb7932SJeff Layton 198958eb7932SJeff Layton m = rb_first(&osd->o_requests); 199058eb7932SJeff Layton while (m) { 199158eb7932SJeff Layton struct ceph_osd_request *req = rb_entry(m, 199258eb7932SJeff Layton struct ceph_osd_request, r_node); 199358eb7932SJeff Layton m = rb_next(m); 199458eb7932SJeff Layton 199558eb7932SJeff Layton if (req->r_abort_on_full) { 199658eb7932SJeff Layton victims = true; 199758eb7932SJeff Layton break; 199858eb7932SJeff Layton } 199958eb7932SJeff Layton } 200058eb7932SJeff Layton if (victims) 200158eb7932SJeff Layton break; 200258eb7932SJeff Layton } 200358eb7932SJeff Layton 200458eb7932SJeff Layton if (!victims) 200558eb7932SJeff Layton goto out; 200658eb7932SJeff Layton 200758eb7932SJeff Layton /* 200858eb7932SJeff Layton * Update the barrier to current epoch if it's behind that point, 200958eb7932SJeff Layton * since we know we have some calls to be aborted in the tree. 201058eb7932SJeff Layton */ 201158eb7932SJeff Layton update_epoch_barrier(osdc, osdc->osdmap->epoch); 201258eb7932SJeff Layton 2013fc36d0a4SJeff Layton for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 2014fc36d0a4SJeff Layton struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 2015fc36d0a4SJeff Layton struct rb_node *m; 2016fc36d0a4SJeff Layton 2017fc36d0a4SJeff Layton m = rb_first(&osd->o_requests); 2018fc36d0a4SJeff Layton while (m) { 2019fc36d0a4SJeff Layton struct ceph_osd_request *req = rb_entry(m, 2020fc36d0a4SJeff Layton struct ceph_osd_request, r_node); 2021fc36d0a4SJeff Layton m = rb_next(m); 2022fc36d0a4SJeff Layton 2023fc36d0a4SJeff Layton if (req->r_abort_on_full && 2024fc36d0a4SJeff Layton (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2025fc36d0a4SJeff Layton pool_full(osdc, req->r_t.target_oloc.pool))) 2026fc36d0a4SJeff Layton abort_request(req, -ENOSPC); 2027fc36d0a4SJeff Layton } 2028fc36d0a4SJeff Layton } 2029fc36d0a4SJeff Layton out: 203058eb7932SJeff Layton dout("return abort_on_full barrier=%u\n", osdc->epoch_barrier); 2031fc36d0a4SJeff Layton } 2032fc36d0a4SJeff Layton 20334609245eSIlya Dryomov static void check_pool_dne(struct ceph_osd_request *req) 20344609245eSIlya Dryomov { 20354609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 20364609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 20374609245eSIlya Dryomov 20384609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 20394609245eSIlya Dryomov WARN_ON(!map->epoch); 20404609245eSIlya Dryomov 20414609245eSIlya Dryomov if (req->r_attempts) { 20424609245eSIlya Dryomov /* 20434609245eSIlya Dryomov * We sent a request earlier, which means that 20444609245eSIlya Dryomov * previously the pool existed, and now it does not 20454609245eSIlya Dryomov * (i.e., it was deleted). 20464609245eSIlya Dryomov */ 20474609245eSIlya Dryomov req->r_map_dne_bound = map->epoch; 20484609245eSIlya Dryomov dout("%s req %p tid %llu pool disappeared\n", __func__, req, 20494609245eSIlya Dryomov req->r_tid); 20504609245eSIlya Dryomov } else { 20514609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, 20524609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, map->epoch); 20534609245eSIlya Dryomov } 20544609245eSIlya Dryomov 20554609245eSIlya Dryomov if (req->r_map_dne_bound) { 20564609245eSIlya Dryomov if (map->epoch >= req->r_map_dne_bound) { 20574609245eSIlya Dryomov /* we had a new enough map */ 20584609245eSIlya Dryomov pr_info_ratelimited("tid %llu pool does not exist\n", 20594609245eSIlya Dryomov req->r_tid); 20604609245eSIlya Dryomov complete_request(req, -ENOENT); 20614609245eSIlya Dryomov } 20624609245eSIlya Dryomov } else { 20634609245eSIlya Dryomov send_map_check(req); 20644609245eSIlya Dryomov } 20654609245eSIlya Dryomov } 20664609245eSIlya Dryomov 20674609245eSIlya Dryomov static void map_check_cb(struct ceph_mon_generic_request *greq) 20684609245eSIlya Dryomov { 20694609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 20704609245eSIlya Dryomov struct ceph_osd_request *req; 20714609245eSIlya Dryomov u64 tid = greq->private_data; 20724609245eSIlya Dryomov 20734609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 20744609245eSIlya Dryomov 20754609245eSIlya Dryomov down_write(&osdc->lock); 20764609245eSIlya Dryomov req = lookup_request_mc(&osdc->map_checks, tid); 20774609245eSIlya Dryomov if (!req) { 20784609245eSIlya Dryomov dout("%s tid %llu dne\n", __func__, tid); 20794609245eSIlya Dryomov goto out_unlock; 20804609245eSIlya Dryomov } 20814609245eSIlya Dryomov 20824609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, 20834609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, greq->u.newest); 20844609245eSIlya Dryomov if (!req->r_map_dne_bound) 20854609245eSIlya Dryomov req->r_map_dne_bound = greq->u.newest; 20864609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 20874609245eSIlya Dryomov check_pool_dne(req); 20884609245eSIlya Dryomov 20894609245eSIlya Dryomov ceph_osdc_put_request(req); 20904609245eSIlya Dryomov out_unlock: 20914609245eSIlya Dryomov up_write(&osdc->lock); 20924609245eSIlya Dryomov } 20934609245eSIlya Dryomov 20944609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req) 20954609245eSIlya Dryomov { 20964609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 20974609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 20984609245eSIlya Dryomov int ret; 20994609245eSIlya Dryomov 21004609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 21014609245eSIlya Dryomov 21024609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 21034609245eSIlya Dryomov if (lookup_req) { 21044609245eSIlya Dryomov WARN_ON(lookup_req != req); 21054609245eSIlya Dryomov return; 21064609245eSIlya Dryomov } 21074609245eSIlya Dryomov 21084609245eSIlya Dryomov ceph_osdc_get_request(req); 21094609245eSIlya Dryomov insert_request_mc(&osdc->map_checks, req); 21104609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 21114609245eSIlya Dryomov map_check_cb, req->r_tid); 21124609245eSIlya Dryomov WARN_ON(ret); 21134609245eSIlya Dryomov } 21144609245eSIlya Dryomov 21150bbfdfe8SIlya Dryomov /* 2116922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 2117922dab61SIlya Dryomov */ 2118922dab61SIlya Dryomov static void linger_release(struct kref *kref) 2119922dab61SIlya Dryomov { 2120922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2121922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 2122922dab61SIlya Dryomov 2123922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 2124922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 2125922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 2126922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 21274609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); 2128922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 2129b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lreq->pending_lworks)); 2130922dab61SIlya Dryomov WARN_ON(lreq->osd); 2131922dab61SIlya Dryomov 2132922dab61SIlya Dryomov if (lreq->reg_req) 2133922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 2134922dab61SIlya Dryomov if (lreq->ping_req) 2135922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 2136922dab61SIlya Dryomov target_destroy(&lreq->t); 2137922dab61SIlya Dryomov kfree(lreq); 2138922dab61SIlya Dryomov } 2139922dab61SIlya Dryomov 2140922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 2141922dab61SIlya Dryomov { 2142922dab61SIlya Dryomov if (lreq) 2143922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 2144922dab61SIlya Dryomov } 2145922dab61SIlya Dryomov 2146922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2147922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 2148922dab61SIlya Dryomov { 2149922dab61SIlya Dryomov kref_get(&lreq->kref); 2150922dab61SIlya Dryomov return lreq; 2151922dab61SIlya Dryomov } 2152922dab61SIlya Dryomov 2153922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2154922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 2155922dab61SIlya Dryomov { 2156922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2157922dab61SIlya Dryomov 2158922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 2159922dab61SIlya Dryomov if (!lreq) 2160922dab61SIlya Dryomov return NULL; 2161922dab61SIlya Dryomov 2162922dab61SIlya Dryomov kref_init(&lreq->kref); 2163922dab61SIlya Dryomov mutex_init(&lreq->lock); 2164922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 2165922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 21664609245eSIlya Dryomov RB_CLEAR_NODE(&lreq->mc_node); 2167922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 2168b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lreq->pending_lworks); 2169922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 217019079203SIlya Dryomov init_completion(&lreq->notify_finish_wait); 2171922dab61SIlya Dryomov 2172922dab61SIlya Dryomov lreq->osdc = osdc; 2173922dab61SIlya Dryomov target_init(&lreq->t); 2174922dab61SIlya Dryomov 2175922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 2176922dab61SIlya Dryomov return lreq; 2177922dab61SIlya Dryomov } 2178922dab61SIlya Dryomov 2179922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 2180922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 21814609245eSIlya Dryomov DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) 2182922dab61SIlya Dryomov 2183922dab61SIlya Dryomov /* 2184922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 2185922dab61SIlya Dryomov * 2186922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 2187922dab61SIlya Dryomov */ 2188922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 2189922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2190922dab61SIlya Dryomov { 2191922dab61SIlya Dryomov verify_osd_locked(osd); 2192922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 2193922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2194922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2195922dab61SIlya Dryomov 2196922dab61SIlya Dryomov if (!osd_homeless(osd)) 2197922dab61SIlya Dryomov __remove_osd_from_lru(osd); 2198922dab61SIlya Dryomov else 2199922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 2200922dab61SIlya Dryomov 2201922dab61SIlya Dryomov get_osd(osd); 2202922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 2203922dab61SIlya Dryomov lreq->osd = osd; 2204922dab61SIlya Dryomov } 2205922dab61SIlya Dryomov 2206922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 2207922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2208922dab61SIlya Dryomov { 2209922dab61SIlya Dryomov verify_osd_locked(osd); 2210922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 2211922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2212922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2213922dab61SIlya Dryomov 2214922dab61SIlya Dryomov lreq->osd = NULL; 2215922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 2216922dab61SIlya Dryomov put_osd(osd); 2217922dab61SIlya Dryomov 2218922dab61SIlya Dryomov if (!osd_homeless(osd)) 2219922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 2220922dab61SIlya Dryomov else 2221922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 2222922dab61SIlya Dryomov } 2223922dab61SIlya Dryomov 2224922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 2225922dab61SIlya Dryomov { 2226922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 2227922dab61SIlya Dryomov 2228922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 2229922dab61SIlya Dryomov } 2230922dab61SIlya Dryomov 2231922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 2232922dab61SIlya Dryomov { 2233922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2234922dab61SIlya Dryomov bool registered; 2235922dab61SIlya Dryomov 2236922dab61SIlya Dryomov down_read(&osdc->lock); 2237922dab61SIlya Dryomov registered = __linger_registered(lreq); 2238922dab61SIlya Dryomov up_read(&osdc->lock); 2239922dab61SIlya Dryomov 2240922dab61SIlya Dryomov return registered; 2241922dab61SIlya Dryomov } 2242922dab61SIlya Dryomov 2243922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 2244922dab61SIlya Dryomov { 2245922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2246922dab61SIlya Dryomov 2247922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2248922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 2249922dab61SIlya Dryomov 2250922dab61SIlya Dryomov linger_get(lreq); 2251922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 2252922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 2253922dab61SIlya Dryomov } 2254922dab61SIlya Dryomov 2255922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 2256922dab61SIlya Dryomov { 2257922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2258922dab61SIlya Dryomov 2259922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2260922dab61SIlya Dryomov 2261922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 2262922dab61SIlya Dryomov linger_put(lreq); 2263922dab61SIlya Dryomov } 2264922dab61SIlya Dryomov 2265922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 2266922dab61SIlya Dryomov { 2267922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2268922dab61SIlya Dryomov 2269922dab61SIlya Dryomov WARN_ON(!req->r_linger); 2270922dab61SIlya Dryomov cancel_request(req); 2271922dab61SIlya Dryomov linger_put(lreq); 2272922dab61SIlya Dryomov } 2273922dab61SIlya Dryomov 2274922dab61SIlya Dryomov struct linger_work { 2275922dab61SIlya Dryomov struct work_struct work; 2276922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2277b07d3c4bSIlya Dryomov struct list_head pending_item; 2278b07d3c4bSIlya Dryomov unsigned long queued_stamp; 2279922dab61SIlya Dryomov 2280922dab61SIlya Dryomov union { 2281922dab61SIlya Dryomov struct { 2282922dab61SIlya Dryomov u64 notify_id; 2283922dab61SIlya Dryomov u64 notifier_id; 2284922dab61SIlya Dryomov void *payload; /* points into @msg front */ 2285922dab61SIlya Dryomov size_t payload_len; 2286922dab61SIlya Dryomov 2287922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 2288922dab61SIlya Dryomov } notify; 2289922dab61SIlya Dryomov struct { 2290922dab61SIlya Dryomov int err; 2291922dab61SIlya Dryomov } error; 2292922dab61SIlya Dryomov }; 2293922dab61SIlya Dryomov }; 2294922dab61SIlya Dryomov 2295922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 2296922dab61SIlya Dryomov work_func_t workfn) 2297922dab61SIlya Dryomov { 2298922dab61SIlya Dryomov struct linger_work *lwork; 2299922dab61SIlya Dryomov 2300922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 2301922dab61SIlya Dryomov if (!lwork) 2302922dab61SIlya Dryomov return NULL; 2303922dab61SIlya Dryomov 2304922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 2305b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lwork->pending_item); 2306922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 2307922dab61SIlya Dryomov 2308922dab61SIlya Dryomov return lwork; 2309922dab61SIlya Dryomov } 2310922dab61SIlya Dryomov 2311922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 2312922dab61SIlya Dryomov { 2313922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2314922dab61SIlya Dryomov 2315b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 2316b07d3c4bSIlya Dryomov list_del(&lwork->pending_item); 2317b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 2318b07d3c4bSIlya Dryomov 2319922dab61SIlya Dryomov linger_put(lreq); 2320922dab61SIlya Dryomov kfree(lwork); 2321922dab61SIlya Dryomov } 2322922dab61SIlya Dryomov 2323922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 2324922dab61SIlya Dryomov { 2325922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2326922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2327922dab61SIlya Dryomov 2328922dab61SIlya Dryomov verify_lreq_locked(lreq); 2329b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lwork->pending_item)); 2330b07d3c4bSIlya Dryomov 2331b07d3c4bSIlya Dryomov lwork->queued_stamp = jiffies; 2332b07d3c4bSIlya Dryomov list_add_tail(&lwork->pending_item, &lreq->pending_lworks); 2333922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 2334922dab61SIlya Dryomov } 2335922dab61SIlya Dryomov 2336922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 2337922dab61SIlya Dryomov { 2338922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2339922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2340922dab61SIlya Dryomov 2341922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2342922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2343922dab61SIlya Dryomov goto out; 2344922dab61SIlya Dryomov } 2345922dab61SIlya Dryomov 234619079203SIlya Dryomov WARN_ON(!lreq->is_watch); 2347922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 2348922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 2349922dab61SIlya Dryomov lwork->notify.payload_len); 2350922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 2351922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 2352922dab61SIlya Dryomov lwork->notify.payload_len); 2353922dab61SIlya Dryomov 2354922dab61SIlya Dryomov out: 2355922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 2356922dab61SIlya Dryomov lwork_free(lwork); 2357922dab61SIlya Dryomov } 2358922dab61SIlya Dryomov 2359922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 2360922dab61SIlya Dryomov { 2361922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2362922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2363922dab61SIlya Dryomov 2364922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2365922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2366922dab61SIlya Dryomov goto out; 2367922dab61SIlya Dryomov } 2368922dab61SIlya Dryomov 2369922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 2370922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 2371922dab61SIlya Dryomov 2372922dab61SIlya Dryomov out: 2373922dab61SIlya Dryomov lwork_free(lwork); 2374922dab61SIlya Dryomov } 2375922dab61SIlya Dryomov 2376922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 2377922dab61SIlya Dryomov { 2378922dab61SIlya Dryomov struct linger_work *lwork; 2379922dab61SIlya Dryomov 2380922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 2381922dab61SIlya Dryomov if (!lwork) { 2382922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 2383922dab61SIlya Dryomov return; 2384922dab61SIlya Dryomov } 2385922dab61SIlya Dryomov 2386922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 2387922dab61SIlya Dryomov lwork_queue(lwork); 2388922dab61SIlya Dryomov } 2389922dab61SIlya Dryomov 2390922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 2391922dab61SIlya Dryomov int result) 2392922dab61SIlya Dryomov { 2393922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 2394922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 2395922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 2396922dab61SIlya Dryomov } 2397922dab61SIlya Dryomov } 2398922dab61SIlya Dryomov 2399922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 2400922dab61SIlya Dryomov { 2401922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2402922dab61SIlya Dryomov 2403922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2404922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 2405922dab61SIlya Dryomov lreq->linger_id, req->r_result); 2406922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 2407922dab61SIlya Dryomov lreq->committed = true; 2408922dab61SIlya Dryomov 240919079203SIlya Dryomov if (!lreq->is_watch) { 241019079203SIlya Dryomov struct ceph_osd_data *osd_data = 241119079203SIlya Dryomov osd_req_op_data(req, 0, notify, response_data); 241219079203SIlya Dryomov void *p = page_address(osd_data->pages[0]); 241319079203SIlya Dryomov 241419079203SIlya Dryomov WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || 241519079203SIlya Dryomov osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); 241619079203SIlya Dryomov 241719079203SIlya Dryomov /* make note of the notify_id */ 241819079203SIlya Dryomov if (req->r_ops[0].outdata_len >= sizeof(u64)) { 241919079203SIlya Dryomov lreq->notify_id = ceph_decode_64(&p); 242019079203SIlya Dryomov dout("lreq %p notify_id %llu\n", lreq, 242119079203SIlya Dryomov lreq->notify_id); 242219079203SIlya Dryomov } else { 242319079203SIlya Dryomov dout("lreq %p no notify_id\n", lreq); 242419079203SIlya Dryomov } 242519079203SIlya Dryomov } 242619079203SIlya Dryomov 2427922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2428922dab61SIlya Dryomov linger_put(lreq); 2429922dab61SIlya Dryomov } 2430922dab61SIlya Dryomov 2431922dab61SIlya Dryomov static int normalize_watch_error(int err) 2432922dab61SIlya Dryomov { 2433922dab61SIlya Dryomov /* 2434922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 2435922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 2436922dab61SIlya Dryomov * the delete appear the same to the user. 2437922dab61SIlya Dryomov */ 2438922dab61SIlya Dryomov if (err == -ENOENT) 2439922dab61SIlya Dryomov err = -ENOTCONN; 2440922dab61SIlya Dryomov 2441922dab61SIlya Dryomov return err; 2442922dab61SIlya Dryomov } 2443922dab61SIlya Dryomov 2444922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 2445922dab61SIlya Dryomov { 2446922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2447922dab61SIlya Dryomov 2448922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2449922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 2450922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 2451922dab61SIlya Dryomov if (req->r_result < 0) { 2452922dab61SIlya Dryomov if (!lreq->last_error) { 2453922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2454922dab61SIlya Dryomov queue_watch_error(lreq); 2455922dab61SIlya Dryomov } 2456922dab61SIlya Dryomov } 2457922dab61SIlya Dryomov 2458922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2459922dab61SIlya Dryomov linger_put(lreq); 2460922dab61SIlya Dryomov } 2461922dab61SIlya Dryomov 2462922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 2463922dab61SIlya Dryomov { 2464922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->reg_req; 2465922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2466922dab61SIlya Dryomov 2467922dab61SIlya Dryomov verify_osdc_wrlocked(req->r_osdc); 2468922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2469922dab61SIlya Dryomov 2470922dab61SIlya Dryomov if (req->r_osd) 2471922dab61SIlya Dryomov cancel_linger_request(req); 2472922dab61SIlya Dryomov 2473922dab61SIlya Dryomov request_reinit(req); 2474922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 2475922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 2476922dab61SIlya Dryomov req->r_flags = lreq->t.flags; 2477922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 2478922dab61SIlya Dryomov 2479922dab61SIlya Dryomov mutex_lock(&lreq->lock); 248019079203SIlya Dryomov if (lreq->is_watch && lreq->committed) { 2481922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2482922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id); 2483922dab61SIlya Dryomov op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; 2484922dab61SIlya Dryomov op->watch.gen = ++lreq->register_gen; 2485922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 2486922dab61SIlya Dryomov op->watch.gen); 2487922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 2488922dab61SIlya Dryomov } else { 248919079203SIlya Dryomov if (!lreq->is_watch) 249019079203SIlya Dryomov lreq->notify_id = 0; 249119079203SIlya Dryomov else 2492922dab61SIlya Dryomov WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); 2493922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 2494922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 2495922dab61SIlya Dryomov } 2496922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2497922dab61SIlya Dryomov 2498922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2499922dab61SIlya Dryomov req->r_linger = true; 2500922dab61SIlya Dryomov 2501922dab61SIlya Dryomov submit_request(req, true); 2502922dab61SIlya Dryomov } 2503922dab61SIlya Dryomov 2504922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 2505922dab61SIlya Dryomov { 2506922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2507922dab61SIlya Dryomov 2508922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2509922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 2510922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 2511922dab61SIlya Dryomov lreq->last_error); 2512922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 2513b07d3c4bSIlya Dryomov if (!req->r_result) { 2514b07d3c4bSIlya Dryomov lreq->watch_valid_thru = lreq->ping_sent; 2515b07d3c4bSIlya Dryomov } else if (!lreq->last_error) { 2516922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2517922dab61SIlya Dryomov queue_watch_error(lreq); 2518922dab61SIlya Dryomov } 2519922dab61SIlya Dryomov } else { 2520922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 2521922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 2522922dab61SIlya Dryomov } 2523922dab61SIlya Dryomov 2524922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2525922dab61SIlya Dryomov linger_put(lreq); 2526922dab61SIlya Dryomov } 2527922dab61SIlya Dryomov 2528922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 2529922dab61SIlya Dryomov { 2530922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2531922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->ping_req; 2532922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2533922dab61SIlya Dryomov 2534b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 2535922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 2536922dab61SIlya Dryomov return; 2537922dab61SIlya Dryomov } 2538922dab61SIlya Dryomov 2539922dab61SIlya Dryomov lreq->ping_sent = jiffies; 2540922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 2541922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 2542922dab61SIlya Dryomov lreq->register_gen); 2543922dab61SIlya Dryomov 2544922dab61SIlya Dryomov if (req->r_osd) 2545922dab61SIlya Dryomov cancel_linger_request(req); 2546922dab61SIlya Dryomov 2547922dab61SIlya Dryomov request_reinit(req); 2548922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 2549922dab61SIlya Dryomov 2550922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2551922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id || 2552922dab61SIlya Dryomov op->watch.op != CEPH_OSD_WATCH_OP_PING); 2553922dab61SIlya Dryomov op->watch.gen = lreq->register_gen; 2554922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 2555922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2556922dab61SIlya Dryomov req->r_linger = true; 2557922dab61SIlya Dryomov 2558922dab61SIlya Dryomov ceph_osdc_get_request(req); 2559922dab61SIlya Dryomov account_request(req); 2560922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 2561922dab61SIlya Dryomov link_request(lreq->osd, req); 2562922dab61SIlya Dryomov send_request(req); 2563922dab61SIlya Dryomov } 2564922dab61SIlya Dryomov 2565922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 2566922dab61SIlya Dryomov { 2567922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2568922dab61SIlya Dryomov struct ceph_osd *osd; 2569922dab61SIlya Dryomov 25707de030d6SIlya Dryomov calc_target(osdc, &lreq->t, NULL, false); 2571922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 2572922dab61SIlya Dryomov link_linger(osd, lreq); 2573922dab61SIlya Dryomov 2574922dab61SIlya Dryomov send_linger(lreq); 2575922dab61SIlya Dryomov } 2576922dab61SIlya Dryomov 25774609245eSIlya Dryomov static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) 25784609245eSIlya Dryomov { 25794609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 25804609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 25814609245eSIlya Dryomov 25824609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 25834609245eSIlya Dryomov 25844609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 25854609245eSIlya Dryomov lreq->linger_id); 25864609245eSIlya Dryomov if (!lookup_lreq) 25874609245eSIlya Dryomov return; 25884609245eSIlya Dryomov 25894609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 25904609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 25914609245eSIlya Dryomov linger_put(lreq); 25924609245eSIlya Dryomov } 25934609245eSIlya Dryomov 2594922dab61SIlya Dryomov /* 2595922dab61SIlya Dryomov * @lreq has to be both registered and linked. 2596922dab61SIlya Dryomov */ 2597922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 2598922dab61SIlya Dryomov { 259919079203SIlya Dryomov if (lreq->is_watch && lreq->ping_req->r_osd) 2600922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 2601922dab61SIlya Dryomov if (lreq->reg_req->r_osd) 2602922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 26034609245eSIlya Dryomov cancel_linger_map_check(lreq); 2604922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 2605922dab61SIlya Dryomov linger_unregister(lreq); 2606922dab61SIlya Dryomov } 2607922dab61SIlya Dryomov 2608922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 2609922dab61SIlya Dryomov { 2610922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2611922dab61SIlya Dryomov 2612922dab61SIlya Dryomov down_write(&osdc->lock); 2613922dab61SIlya Dryomov if (__linger_registered(lreq)) 2614922dab61SIlya Dryomov __linger_cancel(lreq); 2615922dab61SIlya Dryomov up_write(&osdc->lock); 2616922dab61SIlya Dryomov } 2617922dab61SIlya Dryomov 26184609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq); 26194609245eSIlya Dryomov 26204609245eSIlya Dryomov static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) 26214609245eSIlya Dryomov { 26224609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 26234609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 26244609245eSIlya Dryomov 26254609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 26264609245eSIlya Dryomov WARN_ON(!map->epoch); 26274609245eSIlya Dryomov 26284609245eSIlya Dryomov if (lreq->register_gen) { 26294609245eSIlya Dryomov lreq->map_dne_bound = map->epoch; 26304609245eSIlya Dryomov dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, 26314609245eSIlya Dryomov lreq, lreq->linger_id); 26324609245eSIlya Dryomov } else { 26334609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", 26344609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 26354609245eSIlya Dryomov map->epoch); 26364609245eSIlya Dryomov } 26374609245eSIlya Dryomov 26384609245eSIlya Dryomov if (lreq->map_dne_bound) { 26394609245eSIlya Dryomov if (map->epoch >= lreq->map_dne_bound) { 26404609245eSIlya Dryomov /* we had a new enough map */ 26414609245eSIlya Dryomov pr_info("linger_id %llu pool does not exist\n", 26424609245eSIlya Dryomov lreq->linger_id); 26434609245eSIlya Dryomov linger_reg_commit_complete(lreq, -ENOENT); 26444609245eSIlya Dryomov __linger_cancel(lreq); 26454609245eSIlya Dryomov } 26464609245eSIlya Dryomov } else { 26474609245eSIlya Dryomov send_linger_map_check(lreq); 26484609245eSIlya Dryomov } 26494609245eSIlya Dryomov } 26504609245eSIlya Dryomov 26514609245eSIlya Dryomov static void linger_map_check_cb(struct ceph_mon_generic_request *greq) 26524609245eSIlya Dryomov { 26534609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 26544609245eSIlya Dryomov struct ceph_osd_linger_request *lreq; 26554609245eSIlya Dryomov u64 linger_id = greq->private_data; 26564609245eSIlya Dryomov 26574609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 26584609245eSIlya Dryomov 26594609245eSIlya Dryomov down_write(&osdc->lock); 26604609245eSIlya Dryomov lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); 26614609245eSIlya Dryomov if (!lreq) { 26624609245eSIlya Dryomov dout("%s linger_id %llu dne\n", __func__, linger_id); 26634609245eSIlya Dryomov goto out_unlock; 26644609245eSIlya Dryomov } 26654609245eSIlya Dryomov 26664609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", 26674609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 26684609245eSIlya Dryomov greq->u.newest); 26694609245eSIlya Dryomov if (!lreq->map_dne_bound) 26704609245eSIlya Dryomov lreq->map_dne_bound = greq->u.newest; 26714609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 26724609245eSIlya Dryomov check_linger_pool_dne(lreq); 26734609245eSIlya Dryomov 26744609245eSIlya Dryomov linger_put(lreq); 26754609245eSIlya Dryomov out_unlock: 26764609245eSIlya Dryomov up_write(&osdc->lock); 26774609245eSIlya Dryomov } 26784609245eSIlya Dryomov 26794609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq) 26804609245eSIlya Dryomov { 26814609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 26824609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 26834609245eSIlya Dryomov int ret; 26844609245eSIlya Dryomov 26854609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 26864609245eSIlya Dryomov 26874609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 26884609245eSIlya Dryomov lreq->linger_id); 26894609245eSIlya Dryomov if (lookup_lreq) { 26904609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 26914609245eSIlya Dryomov return; 26924609245eSIlya Dryomov } 26934609245eSIlya Dryomov 26944609245eSIlya Dryomov linger_get(lreq); 26954609245eSIlya Dryomov insert_linger_mc(&osdc->linger_map_checks, lreq); 26964609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 26974609245eSIlya Dryomov linger_map_check_cb, lreq->linger_id); 26984609245eSIlya Dryomov WARN_ON(ret); 26994609245eSIlya Dryomov } 27004609245eSIlya Dryomov 2701922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 2702922dab61SIlya Dryomov { 2703922dab61SIlya Dryomov int ret; 2704922dab61SIlya Dryomov 2705922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2706922dab61SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); 2707922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 2708922dab61SIlya Dryomov } 2709922dab61SIlya Dryomov 271019079203SIlya Dryomov static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) 271119079203SIlya Dryomov { 271219079203SIlya Dryomov int ret; 271319079203SIlya Dryomov 271419079203SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 271519079203SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); 271619079203SIlya Dryomov return ret ?: lreq->notify_finish_error; 271719079203SIlya Dryomov } 271819079203SIlya Dryomov 2719922dab61SIlya Dryomov /* 2720fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 2721fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 2722fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 2723fbca9635SIlya Dryomov * reset is detected. 27243d14c5d2SYehuda Sadeh */ 27253d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 27263d14c5d2SYehuda Sadeh { 27273d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 27283d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 2729a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 27305aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 27317cc5e38fSIlya Dryomov unsigned long expiry_cutoff = jiffies - opts->osd_request_timeout; 27325aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 27335aea3dcdSIlya Dryomov struct rb_node *n, *p; 27343d14c5d2SYehuda Sadeh 27355aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 27365aea3dcdSIlya Dryomov down_write(&osdc->lock); 27373d14c5d2SYehuda Sadeh 27383d14c5d2SYehuda Sadeh /* 27393d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 27403d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 27413d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 27423d14c5d2SYehuda Sadeh */ 27435aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 27445aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 27455aea3dcdSIlya Dryomov bool found = false; 27463d14c5d2SYehuda Sadeh 27477cc5e38fSIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 27485aea3dcdSIlya Dryomov struct ceph_osd_request *req = 27495aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 27505aea3dcdSIlya Dryomov 27517cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 27527cc5e38fSIlya Dryomov 27535aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 27545aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 27555aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 27565aea3dcdSIlya Dryomov found = true; 27575aea3dcdSIlya Dryomov } 27587cc5e38fSIlya Dryomov if (opts->osd_request_timeout && 27597cc5e38fSIlya Dryomov time_before(req->r_start_stamp, expiry_cutoff)) { 27607cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 27617cc5e38fSIlya Dryomov req->r_tid, osd->o_osd); 27627cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 27637cc5e38fSIlya Dryomov } 27645aea3dcdSIlya Dryomov } 2765922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 2766922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2767922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 2768922dab61SIlya Dryomov 2769922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 2770922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 2771922dab61SIlya Dryomov found = true; 2772922dab61SIlya Dryomov 2773922dab61SIlya Dryomov mutex_lock(&lreq->lock); 277419079203SIlya Dryomov if (lreq->is_watch && lreq->committed && !lreq->last_error) 2775922dab61SIlya Dryomov send_linger_ping(lreq); 2776922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2777922dab61SIlya Dryomov } 27785aea3dcdSIlya Dryomov 27795aea3dcdSIlya Dryomov if (found) 27803d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 27813d14c5d2SYehuda Sadeh } 27825aea3dcdSIlya Dryomov 27837cc5e38fSIlya Dryomov if (opts->osd_request_timeout) { 27847cc5e38fSIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 27857cc5e38fSIlya Dryomov struct ceph_osd_request *req = 27867cc5e38fSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 27877cc5e38fSIlya Dryomov 27887cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 27897cc5e38fSIlya Dryomov 27907cc5e38fSIlya Dryomov if (time_before(req->r_start_stamp, expiry_cutoff)) { 27917cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 27927cc5e38fSIlya Dryomov req->r_tid, osdc->homeless_osd.o_osd); 27937cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 27947cc5e38fSIlya Dryomov } 27957cc5e38fSIlya Dryomov } 27967cc5e38fSIlya Dryomov } 27977cc5e38fSIlya Dryomov 27985aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 27995aea3dcdSIlya Dryomov maybe_request_map(osdc); 28005aea3dcdSIlya Dryomov 28013d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 28025aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 28035aea3dcdSIlya Dryomov struct ceph_osd, 28043d14c5d2SYehuda Sadeh o_keepalive_item); 28053d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 28063d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 28073d14c5d2SYehuda Sadeh } 28083d14c5d2SYehuda Sadeh 28095aea3dcdSIlya Dryomov up_write(&osdc->lock); 2810fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 2811fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 28123d14c5d2SYehuda Sadeh } 28133d14c5d2SYehuda Sadeh 28143d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 28153d14c5d2SYehuda Sadeh { 28163d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 28173d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 28183d14c5d2SYehuda Sadeh osds_timeout_work.work); 2819a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 282042a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 28213d14c5d2SYehuda Sadeh 282242a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 28235aea3dcdSIlya Dryomov down_write(&osdc->lock); 282442a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 282542a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 282642a2c09fSIlya Dryomov break; 282742a2c09fSIlya Dryomov 28285aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 2829922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 28305aea3dcdSIlya Dryomov close_osd(osd); 283142a2c09fSIlya Dryomov } 283242a2c09fSIlya Dryomov 28335aea3dcdSIlya Dryomov up_write(&osdc->lock); 28343d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 28353d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 28363d14c5d2SYehuda Sadeh } 28373d14c5d2SYehuda Sadeh 2838205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 2839205ee118SIlya Dryomov struct ceph_object_locator *oloc) 2840205ee118SIlya Dryomov { 2841205ee118SIlya Dryomov u8 struct_v, struct_cv; 2842205ee118SIlya Dryomov u32 len; 2843205ee118SIlya Dryomov void *struct_end; 2844205ee118SIlya Dryomov int ret = 0; 2845205ee118SIlya Dryomov 2846205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 2847205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 2848205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 2849205ee118SIlya Dryomov if (struct_v < 3) { 2850205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 2851205ee118SIlya Dryomov struct_v, struct_cv); 2852205ee118SIlya Dryomov goto e_inval; 2853205ee118SIlya Dryomov } 2854205ee118SIlya Dryomov if (struct_cv > 6) { 2855205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 2856205ee118SIlya Dryomov struct_v, struct_cv); 2857205ee118SIlya Dryomov goto e_inval; 2858205ee118SIlya Dryomov } 2859205ee118SIlya Dryomov len = ceph_decode_32(p); 2860205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 2861205ee118SIlya Dryomov struct_end = *p + len; 2862205ee118SIlya Dryomov 2863205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 2864205ee118SIlya Dryomov *p += 4; /* skip preferred */ 2865205ee118SIlya Dryomov 2866205ee118SIlya Dryomov len = ceph_decode_32(p); 2867205ee118SIlya Dryomov if (len > 0) { 2868205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 2869205ee118SIlya Dryomov goto e_inval; 2870205ee118SIlya Dryomov } 2871205ee118SIlya Dryomov 2872205ee118SIlya Dryomov if (struct_v >= 5) { 2873cd08e0a2SYan, Zheng bool changed = false; 2874cd08e0a2SYan, Zheng 2875205ee118SIlya Dryomov len = ceph_decode_32(p); 2876205ee118SIlya Dryomov if (len > 0) { 287730c156d9SYan, Zheng ceph_decode_need(p, end, len, e_inval); 2878cd08e0a2SYan, Zheng if (!oloc->pool_ns || 2879cd08e0a2SYan, Zheng ceph_compare_string(oloc->pool_ns, *p, len)) 2880cd08e0a2SYan, Zheng changed = true; 288130c156d9SYan, Zheng *p += len; 2882cd08e0a2SYan, Zheng } else { 2883cd08e0a2SYan, Zheng if (oloc->pool_ns) 2884cd08e0a2SYan, Zheng changed = true; 2885cd08e0a2SYan, Zheng } 2886cd08e0a2SYan, Zheng if (changed) { 2887cd08e0a2SYan, Zheng /* redirect changes namespace */ 2888cd08e0a2SYan, Zheng pr_warn("ceph_object_locator::nspace is changed\n"); 2889cd08e0a2SYan, Zheng goto e_inval; 2890205ee118SIlya Dryomov } 2891205ee118SIlya Dryomov } 2892205ee118SIlya Dryomov 2893205ee118SIlya Dryomov if (struct_v >= 6) { 2894205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 2895205ee118SIlya Dryomov if (hash != -1) { 2896205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 2897205ee118SIlya Dryomov goto e_inval; 2898205ee118SIlya Dryomov } 2899205ee118SIlya Dryomov } 2900205ee118SIlya Dryomov 2901205ee118SIlya Dryomov /* skip the rest */ 2902205ee118SIlya Dryomov *p = struct_end; 2903205ee118SIlya Dryomov out: 2904205ee118SIlya Dryomov return ret; 2905205ee118SIlya Dryomov 2906205ee118SIlya Dryomov e_inval: 2907205ee118SIlya Dryomov ret = -EINVAL; 2908205ee118SIlya Dryomov goto out; 2909205ee118SIlya Dryomov } 2910205ee118SIlya Dryomov 2911205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 2912205ee118SIlya Dryomov struct ceph_request_redirect *redir) 2913205ee118SIlya Dryomov { 2914205ee118SIlya Dryomov u8 struct_v, struct_cv; 2915205ee118SIlya Dryomov u32 len; 2916205ee118SIlya Dryomov void *struct_end; 2917205ee118SIlya Dryomov int ret; 2918205ee118SIlya Dryomov 2919205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 2920205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 2921205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 2922205ee118SIlya Dryomov if (struct_cv > 1) { 2923205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 2924205ee118SIlya Dryomov struct_v, struct_cv); 2925205ee118SIlya Dryomov goto e_inval; 2926205ee118SIlya Dryomov } 2927205ee118SIlya Dryomov len = ceph_decode_32(p); 2928205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 2929205ee118SIlya Dryomov struct_end = *p + len; 2930205ee118SIlya Dryomov 2931205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 2932205ee118SIlya Dryomov if (ret) 2933205ee118SIlya Dryomov goto out; 2934205ee118SIlya Dryomov 2935205ee118SIlya Dryomov len = ceph_decode_32(p); 2936205ee118SIlya Dryomov if (len > 0) { 2937205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 2938205ee118SIlya Dryomov goto e_inval; 2939205ee118SIlya Dryomov } 2940205ee118SIlya Dryomov 2941205ee118SIlya Dryomov len = ceph_decode_32(p); 2942205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 2943205ee118SIlya Dryomov 2944205ee118SIlya Dryomov /* skip the rest */ 2945205ee118SIlya Dryomov *p = struct_end; 2946205ee118SIlya Dryomov out: 2947205ee118SIlya Dryomov return ret; 2948205ee118SIlya Dryomov 2949205ee118SIlya Dryomov e_inval: 2950205ee118SIlya Dryomov ret = -EINVAL; 2951205ee118SIlya Dryomov goto out; 2952205ee118SIlya Dryomov } 2953205ee118SIlya Dryomov 2954fe5da05eSIlya Dryomov struct MOSDOpReply { 2955fe5da05eSIlya Dryomov struct ceph_pg pgid; 2956fe5da05eSIlya Dryomov u64 flags; 2957fe5da05eSIlya Dryomov int result; 2958fe5da05eSIlya Dryomov u32 epoch; 2959fe5da05eSIlya Dryomov int num_ops; 2960fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 2961fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 2962fe5da05eSIlya Dryomov int retry_attempt; 2963fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 2964fe5da05eSIlya Dryomov u64 user_version; 2965fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 2966fe5da05eSIlya Dryomov }; 296725845472SSage Weil 2968fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 29693d14c5d2SYehuda Sadeh { 2970fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 2971fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 2972fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 2973fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 2974b0b31a8fSIlya Dryomov u8 decode_redir; 2975fe5da05eSIlya Dryomov u32 len; 2976fe5da05eSIlya Dryomov int ret; 2977fe5da05eSIlya Dryomov int i; 29783d14c5d2SYehuda Sadeh 2979fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 2980fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 2981fe5da05eSIlya Dryomov p += len; /* skip oid */ 29821b83bef2SSage Weil 2983fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 2984fe5da05eSIlya Dryomov if (ret) 2985fe5da05eSIlya Dryomov return ret; 29861b83bef2SSage Weil 2987fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 2988fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 2989fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 2990fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 2991fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 2992fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 29931b83bef2SSage Weil 2994fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 2995fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 2996fe5da05eSIlya Dryomov goto e_inval; 29971b83bef2SSage Weil 2998fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 2999fe5da05eSIlya Dryomov e_inval); 3000fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 30011b83bef2SSage Weil struct ceph_osd_op *op = p; 30021b83bef2SSage Weil 3003fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 30041b83bef2SSage Weil p += sizeof(*op); 30051b83bef2SSage Weil } 3006fe5da05eSIlya Dryomov 3007fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 3008fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 3009fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 3010fe5da05eSIlya Dryomov 3011fe5da05eSIlya Dryomov if (version >= 5) { 3012fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 3013fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 3014fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 3015fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 3016fe5da05eSIlya Dryomov } else { 3017fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 3018fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 30191b83bef2SSage Weil } 30201b83bef2SSage Weil 3021fe5da05eSIlya Dryomov if (version >= 6) { 3022fe5da05eSIlya Dryomov if (version >= 7) 3023fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 3024b0b31a8fSIlya Dryomov else 3025b0b31a8fSIlya Dryomov decode_redir = 1; 3026b0b31a8fSIlya Dryomov } else { 3027b0b31a8fSIlya Dryomov decode_redir = 0; 3028b0b31a8fSIlya Dryomov } 3029b0b31a8fSIlya Dryomov 3030b0b31a8fSIlya Dryomov if (decode_redir) { 3031fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 3032fe5da05eSIlya Dryomov if (ret) 3033fe5da05eSIlya Dryomov return ret; 3034205ee118SIlya Dryomov } else { 3035fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 3036205ee118SIlya Dryomov } 3037205ee118SIlya Dryomov 3038fe5da05eSIlya Dryomov return 0; 3039205ee118SIlya Dryomov 3040fe5da05eSIlya Dryomov e_inval: 3041fe5da05eSIlya Dryomov return -EINVAL; 3042fe5da05eSIlya Dryomov } 3043fe5da05eSIlya Dryomov 3044fe5da05eSIlya Dryomov /* 3045b18b9550SIlya Dryomov * Handle MOSDOpReply. Set ->r_result and call the callback if it is 3046b18b9550SIlya Dryomov * specified. 3047fe5da05eSIlya Dryomov */ 30485aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 3049fe5da05eSIlya Dryomov { 30505aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 3051fe5da05eSIlya Dryomov struct ceph_osd_request *req; 3052fe5da05eSIlya Dryomov struct MOSDOpReply m; 3053fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 3054fe5da05eSIlya Dryomov u32 data_len = 0; 3055fe5da05eSIlya Dryomov int ret; 3056fe5da05eSIlya Dryomov int i; 3057fe5da05eSIlya Dryomov 3058fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 3059fe5da05eSIlya Dryomov 30605aea3dcdSIlya Dryomov down_read(&osdc->lock); 30615aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 30625aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 30635aea3dcdSIlya Dryomov goto out_unlock_osdc; 3064fe5da05eSIlya Dryomov } 30655aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 30665aea3dcdSIlya Dryomov 30675aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 30685aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 30695aea3dcdSIlya Dryomov if (!req) { 30705aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 30715aea3dcdSIlya Dryomov goto out_unlock_session; 30725aea3dcdSIlya Dryomov } 3073fe5da05eSIlya Dryomov 3074cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns; 3075fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 3076cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = NULL; 3077fe5da05eSIlya Dryomov if (ret) { 3078fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 3079fe5da05eSIlya Dryomov req->r_tid, ret); 3080fe5da05eSIlya Dryomov ceph_msg_dump(msg); 3081fe5da05eSIlya Dryomov goto fail_request; 3082fe5da05eSIlya Dryomov } 3083fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 3084fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 3085fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 3086fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 3087fe5da05eSIlya Dryomov 3088fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 3089fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 3090fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 3091fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 3092fe5da05eSIlya Dryomov req->r_attempts - 1); 30935aea3dcdSIlya Dryomov goto out_unlock_session; 3094fe5da05eSIlya Dryomov } 3095fe5da05eSIlya Dryomov } else { 3096fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 3097fe5da05eSIlya Dryomov } 3098fe5da05eSIlya Dryomov 3099fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 3100fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 3101fe5da05eSIlya Dryomov m.redirect.oloc.pool); 31025aea3dcdSIlya Dryomov unlink_request(osd, req); 31035aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 3104205ee118SIlya Dryomov 310530c156d9SYan, Zheng /* 310630c156d9SYan, Zheng * Not ceph_oloc_copy() - changing pool_ns is not 310730c156d9SYan, Zheng * supported. 310830c156d9SYan, Zheng */ 310930c156d9SYan, Zheng req->r_t.target_oloc.pool = m.redirect.oloc.pool; 31105aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; 31115aea3dcdSIlya Dryomov req->r_tid = 0; 31125aea3dcdSIlya Dryomov __submit_request(req, false); 31135aea3dcdSIlya Dryomov goto out_unlock_osdc; 3114205ee118SIlya Dryomov } 3115205ee118SIlya Dryomov 3116fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 3117fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 3118fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 3119fe5da05eSIlya Dryomov goto fail_request; 3120fe5da05eSIlya Dryomov } 3121fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 3122fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 3123fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 3124fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 3125fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 3126fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 3127fe5da05eSIlya Dryomov } 3128fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 3129fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 3130fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 3131fe5da05eSIlya Dryomov goto fail_request; 3132fe5da05eSIlya Dryomov } 3133b18b9550SIlya Dryomov dout("%s req %p tid %llu result %d data_len %u\n", __func__, 3134b18b9550SIlya Dryomov req, req->r_tid, m.result, data_len); 31353d14c5d2SYehuda Sadeh 3136b18b9550SIlya Dryomov /* 3137b18b9550SIlya Dryomov * Since we only ever request ONDISK, we should only ever get 3138b18b9550SIlya Dryomov * one (type of) reply back. 3139b18b9550SIlya Dryomov */ 3140b18b9550SIlya Dryomov WARN_ON(!(m.flags & CEPH_OSD_FLAG_ONDISK)); 3141fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 314245ee2c1dSIlya Dryomov finish_request(req); 31435aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 31445aea3dcdSIlya Dryomov up_read(&osdc->lock); 31453d14c5d2SYehuda Sadeh 3146fe5da05eSIlya Dryomov __complete_request(req); 3147b18b9550SIlya Dryomov complete_all(&req->r_completion); 3148dc045a91SIlya Dryomov ceph_osdc_put_request(req); 31493d14c5d2SYehuda Sadeh return; 3150fe5da05eSIlya Dryomov 3151fe5da05eSIlya Dryomov fail_request: 31524609245eSIlya Dryomov complete_request(req, -EIO); 31535aea3dcdSIlya Dryomov out_unlock_session: 31545aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 31555aea3dcdSIlya Dryomov out_unlock_osdc: 31565aea3dcdSIlya Dryomov up_read(&osdc->lock); 31573d14c5d2SYehuda Sadeh } 31583d14c5d2SYehuda Sadeh 315942c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 316042c1b124SIlya Dryomov { 316142c1b124SIlya Dryomov struct rb_node *n; 316242c1b124SIlya Dryomov 316342c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 316442c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 316542c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 316642c1b124SIlya Dryomov 316742c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 316842c1b124SIlya Dryomov } 316942c1b124SIlya Dryomov } 317042c1b124SIlya Dryomov 31715aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 31723d14c5d2SYehuda Sadeh { 31735aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 31743d14c5d2SYehuda Sadeh 31755aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 31765aea3dcdSIlya Dryomov if (!pi) 31775aea3dcdSIlya Dryomov return false; 31783d14c5d2SYehuda Sadeh 31795aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 31803d14c5d2SYehuda Sadeh } 31813d14c5d2SYehuda Sadeh 3182922dab61SIlya Dryomov static enum calc_target_result 3183922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 3184922dab61SIlya Dryomov { 3185922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3186922dab61SIlya Dryomov enum calc_target_result ct_res; 3187922dab61SIlya Dryomov 31887de030d6SIlya Dryomov ct_res = calc_target(osdc, &lreq->t, NULL, true); 3189922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 3190922dab61SIlya Dryomov struct ceph_osd *osd; 3191922dab61SIlya Dryomov 3192922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3193922dab61SIlya Dryomov if (osd != lreq->osd) { 3194922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3195922dab61SIlya Dryomov link_linger(osd, lreq); 3196922dab61SIlya Dryomov } 3197922dab61SIlya Dryomov } 3198922dab61SIlya Dryomov 3199922dab61SIlya Dryomov return ct_res; 3200922dab61SIlya Dryomov } 3201922dab61SIlya Dryomov 32023d14c5d2SYehuda Sadeh /* 32035aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 32043d14c5d2SYehuda Sadeh */ 32055aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 32065aea3dcdSIlya Dryomov bool force_resend, 32075aea3dcdSIlya Dryomov bool cleared_full, 32085aea3dcdSIlya Dryomov bool check_pool_cleared_full, 32095aea3dcdSIlya Dryomov struct rb_root *need_resend, 32105aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 32113d14c5d2SYehuda Sadeh { 32125aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 32135aea3dcdSIlya Dryomov struct rb_node *n; 32145aea3dcdSIlya Dryomov bool force_resend_writes; 32153d14c5d2SYehuda Sadeh 3216922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 3217922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3218922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3219922dab61SIlya Dryomov enum calc_target_result ct_res; 3220922dab61SIlya Dryomov 3221922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 3222922dab61SIlya Dryomov 3223922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 3224922dab61SIlya Dryomov lreq->linger_id); 3225922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 3226922dab61SIlya Dryomov switch (ct_res) { 3227922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 3228922dab61SIlya Dryomov force_resend_writes = cleared_full || 3229922dab61SIlya Dryomov (check_pool_cleared_full && 3230922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 3231922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 3232922dab61SIlya Dryomov break; 3233922dab61SIlya Dryomov 3234922dab61SIlya Dryomov /* fall through */ 3235922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 32364609245eSIlya Dryomov cancel_linger_map_check(lreq); 3237922dab61SIlya Dryomov /* 3238922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 3239922dab61SIlya Dryomov * may have already added it to the list, since 3240922dab61SIlya Dryomov * it's not unlinked here. 3241922dab61SIlya Dryomov */ 3242922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 3243922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 3244922dab61SIlya Dryomov break; 3245922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 32464609245eSIlya Dryomov check_linger_pool_dne(lreq); 3247922dab61SIlya Dryomov break; 3248922dab61SIlya Dryomov } 3249922dab61SIlya Dryomov } 3250922dab61SIlya Dryomov 32515aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 32525aea3dcdSIlya Dryomov struct ceph_osd_request *req = 32535aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 32545aea3dcdSIlya Dryomov enum calc_target_result ct_res; 3255ab60b16dSAlex Elder 32564609245eSIlya Dryomov n = rb_next(n); /* unlink_request(), check_pool_dne() */ 3257ab60b16dSAlex Elder 32585aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 32597de030d6SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, &req->r_osd->o_con, 32607de030d6SIlya Dryomov false); 32615aea3dcdSIlya Dryomov switch (ct_res) { 32625aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 32635aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 32645aea3dcdSIlya Dryomov (check_pool_cleared_full && 32655aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 32665aea3dcdSIlya Dryomov if (!force_resend && 32675aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 32685aea3dcdSIlya Dryomov !force_resend_writes)) 32695aea3dcdSIlya Dryomov break; 3270a40c4f10SYehuda Sadeh 32715aea3dcdSIlya Dryomov /* fall through */ 32725aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 32734609245eSIlya Dryomov cancel_map_check(req); 32745aea3dcdSIlya Dryomov unlink_request(osd, req); 32755aea3dcdSIlya Dryomov insert_request(need_resend, req); 32765aea3dcdSIlya Dryomov break; 32775aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 32784609245eSIlya Dryomov check_pool_dne(req); 32795aea3dcdSIlya Dryomov break; 3280a40c4f10SYehuda Sadeh } 32813d14c5d2SYehuda Sadeh } 32823d14c5d2SYehuda Sadeh } 32836f6c7006SSage Weil 328442c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 32855aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 32865aea3dcdSIlya Dryomov struct rb_root *need_resend, 32875aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 328842c1b124SIlya Dryomov { 328942c1b124SIlya Dryomov struct ceph_osdmap *newmap; 329042c1b124SIlya Dryomov struct rb_node *n; 329142c1b124SIlya Dryomov bool skipped_map = false; 329242c1b124SIlya Dryomov bool was_full; 329342c1b124SIlya Dryomov 3294b7ec35b3SIlya Dryomov was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 329542c1b124SIlya Dryomov set_pool_was_full(osdc); 329642c1b124SIlya Dryomov 329742c1b124SIlya Dryomov if (incremental) 329842c1b124SIlya Dryomov newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); 329942c1b124SIlya Dryomov else 330042c1b124SIlya Dryomov newmap = ceph_osdmap_decode(&p, end); 330142c1b124SIlya Dryomov if (IS_ERR(newmap)) 330242c1b124SIlya Dryomov return PTR_ERR(newmap); 330342c1b124SIlya Dryomov 330442c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 330542c1b124SIlya Dryomov /* 330642c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 330742c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 330842c1b124SIlya Dryomov * should be false. 330942c1b124SIlya Dryomov */ 331042c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 331142c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 331242c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 331342c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 331442c1b124SIlya Dryomov 331542c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 331642c1b124SIlya Dryomov if (old_pi) 331742c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 331842c1b124SIlya Dryomov else 331942c1b124SIlya Dryomov WARN_ON(pi->was_full); 332042c1b124SIlya Dryomov } 332142c1b124SIlya Dryomov 332242c1b124SIlya Dryomov if (osdc->osdmap->epoch && 332342c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 332442c1b124SIlya Dryomov WARN_ON(incremental); 332542c1b124SIlya Dryomov skipped_map = true; 332642c1b124SIlya Dryomov } 332742c1b124SIlya Dryomov 332842c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 332942c1b124SIlya Dryomov osdc->osdmap = newmap; 333042c1b124SIlya Dryomov } 333142c1b124SIlya Dryomov 3332b7ec35b3SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 33335aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 33345aea3dcdSIlya Dryomov need_resend, need_resend_linger); 33355aea3dcdSIlya Dryomov 33365aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 33375aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 33385aea3dcdSIlya Dryomov 33395aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 33405aea3dcdSIlya Dryomov 33415aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 33425aea3dcdSIlya Dryomov need_resend_linger); 33435aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 33445aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 33455aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 33465aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 33475aea3dcdSIlya Dryomov close_osd(osd); 33485aea3dcdSIlya Dryomov } 334942c1b124SIlya Dryomov 335042c1b124SIlya Dryomov return 0; 335142c1b124SIlya Dryomov } 33526f6c7006SSage Weil 33535aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 33545aea3dcdSIlya Dryomov struct rb_root *need_resend, 33555aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 33565aea3dcdSIlya Dryomov { 3357922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 33585aea3dcdSIlya Dryomov struct rb_node *n; 33595aea3dcdSIlya Dryomov 33605aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 33615aea3dcdSIlya Dryomov struct ceph_osd_request *req = 33625aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 33635aea3dcdSIlya Dryomov struct ceph_osd *osd; 33645aea3dcdSIlya Dryomov 33655aea3dcdSIlya Dryomov n = rb_next(n); 33665aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 33675aea3dcdSIlya Dryomov 33685aea3dcdSIlya Dryomov WARN_ON(req->r_osd); 33697de030d6SIlya Dryomov calc_target(osdc, &req->r_t, NULL, false); 33705aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 33715aea3dcdSIlya Dryomov link_request(osd, req); 33725aea3dcdSIlya Dryomov if (!req->r_linger) { 33735aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 33745aea3dcdSIlya Dryomov send_request(req); 3375922dab61SIlya Dryomov } else { 3376922dab61SIlya Dryomov cancel_linger_request(req); 33775aea3dcdSIlya Dryomov } 33785aea3dcdSIlya Dryomov } 3379922dab61SIlya Dryomov 3380922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 3381922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 3382922dab61SIlya Dryomov send_linger(lreq); 3383922dab61SIlya Dryomov 3384922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 3385922dab61SIlya Dryomov } 33865aea3dcdSIlya Dryomov } 33875aea3dcdSIlya Dryomov 33883d14c5d2SYehuda Sadeh /* 33893d14c5d2SYehuda Sadeh * Process updated osd map. 33903d14c5d2SYehuda Sadeh * 33913d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 33923d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 33933d14c5d2SYehuda Sadeh * off to different OSDs as needed. 33943d14c5d2SYehuda Sadeh */ 33953d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 33963d14c5d2SYehuda Sadeh { 339742c1b124SIlya Dryomov void *p = msg->front.iov_base; 339842c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 33993d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 34003d14c5d2SYehuda Sadeh u32 epoch; 34013d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 34025aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 34035aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 340442c1b124SIlya Dryomov bool handled_incremental = false; 340542c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 340642c1b124SIlya Dryomov bool pauserd, pausewr; 340742c1b124SIlya Dryomov int err; 34083d14c5d2SYehuda Sadeh 340942c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 34105aea3dcdSIlya Dryomov down_write(&osdc->lock); 34113d14c5d2SYehuda Sadeh 34123d14c5d2SYehuda Sadeh /* verify fsid */ 34133d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 34143d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 34153d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 341642c1b124SIlya Dryomov goto bad; 34173d14c5d2SYehuda Sadeh 3418b7ec35b3SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3419b7ec35b3SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3420b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 342142c1b124SIlya Dryomov have_pool_full(osdc); 34229a1ea2dbSJosh Durgin 34233d14c5d2SYehuda Sadeh /* incremental maps */ 34243d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 34253d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 34263d14c5d2SYehuda Sadeh while (nr_maps > 0) { 34273d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 34283d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 34293d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 34303d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 343142c1b124SIlya Dryomov if (osdc->osdmap->epoch && 343242c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 34333d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 34343d14c5d2SYehuda Sadeh epoch, maplen); 34355aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 34365aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 343742c1b124SIlya Dryomov if (err) 34383d14c5d2SYehuda Sadeh goto bad; 343942c1b124SIlya Dryomov handled_incremental = true; 34403d14c5d2SYehuda Sadeh } else { 34413d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 34423d14c5d2SYehuda Sadeh epoch, maplen); 34433d14c5d2SYehuda Sadeh } 344442c1b124SIlya Dryomov p += maplen; 34453d14c5d2SYehuda Sadeh nr_maps--; 34463d14c5d2SYehuda Sadeh } 344742c1b124SIlya Dryomov if (handled_incremental) 34483d14c5d2SYehuda Sadeh goto done; 34493d14c5d2SYehuda Sadeh 34503d14c5d2SYehuda Sadeh /* full maps */ 34513d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 34523d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 34533d14c5d2SYehuda Sadeh while (nr_maps) { 34543d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 34553d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 34563d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 34573d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 34583d14c5d2SYehuda Sadeh if (nr_maps > 1) { 34593d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 34603d14c5d2SYehuda Sadeh epoch, maplen); 3461e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 34623d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 34633d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 34643d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 34653d14c5d2SYehuda Sadeh } else { 34663d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 34675aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 34685aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 346942c1b124SIlya Dryomov if (err) 34703d14c5d2SYehuda Sadeh goto bad; 34713d14c5d2SYehuda Sadeh } 34723d14c5d2SYehuda Sadeh p += maplen; 34733d14c5d2SYehuda Sadeh nr_maps--; 34743d14c5d2SYehuda Sadeh } 34753d14c5d2SYehuda Sadeh 34763d14c5d2SYehuda Sadeh done: 3477cd634fb6SSage Weil /* 3478cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 3479cd634fb6SSage Weil * we find out when we are no longer full and stop returning 3480cd634fb6SSage Weil * ENOSPC. 3481cd634fb6SSage Weil */ 3482b7ec35b3SIlya Dryomov pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3483b7ec35b3SIlya Dryomov pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3484b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 348542c1b124SIlya Dryomov have_pool_full(osdc); 348658eb7932SJeff Layton if (was_pauserd || was_pausewr || pauserd || pausewr || 348758eb7932SJeff Layton osdc->osdmap->epoch < osdc->epoch_barrier) 348842c1b124SIlya Dryomov maybe_request_map(osdc); 3489cd634fb6SSage Weil 34905aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 349142c1b124SIlya Dryomov 3492fc36d0a4SJeff Layton ceph_osdc_abort_on_full(osdc); 349342c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 349442c1b124SIlya Dryomov osdc->osdmap->epoch); 34955aea3dcdSIlya Dryomov up_write(&osdc->lock); 34963d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 34973d14c5d2SYehuda Sadeh return; 34983d14c5d2SYehuda Sadeh 34993d14c5d2SYehuda Sadeh bad: 35003d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 35013d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 35025aea3dcdSIlya Dryomov up_write(&osdc->lock); 35035aea3dcdSIlya Dryomov } 35045aea3dcdSIlya Dryomov 35055aea3dcdSIlya Dryomov /* 35065aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 35075aea3dcdSIlya Dryomov */ 35085aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 35095aea3dcdSIlya Dryomov { 35105aea3dcdSIlya Dryomov struct rb_node *n; 35115aea3dcdSIlya Dryomov 3512922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 35135aea3dcdSIlya Dryomov struct ceph_osd_request *req = 35145aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 35155aea3dcdSIlya Dryomov 3516922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 3517922dab61SIlya Dryomov 35185aea3dcdSIlya Dryomov if (!req->r_linger) { 35195aea3dcdSIlya Dryomov if (!req->r_t.paused) 35205aea3dcdSIlya Dryomov send_request(req); 3521922dab61SIlya Dryomov } else { 3522922dab61SIlya Dryomov cancel_linger_request(req); 35235aea3dcdSIlya Dryomov } 35245aea3dcdSIlya Dryomov } 3525922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 3526922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3527922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3528922dab61SIlya Dryomov 3529922dab61SIlya Dryomov send_linger(lreq); 3530922dab61SIlya Dryomov } 35315aea3dcdSIlya Dryomov } 35325aea3dcdSIlya Dryomov 35335aea3dcdSIlya Dryomov /* 35345aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 35355aea3dcdSIlya Dryomov */ 35365aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 35375aea3dcdSIlya Dryomov { 35385aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 35395aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 35405aea3dcdSIlya Dryomov 35415aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 35425aea3dcdSIlya Dryomov 35435aea3dcdSIlya Dryomov down_write(&osdc->lock); 35445aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 35455aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 35465aea3dcdSIlya Dryomov goto out_unlock; 35475aea3dcdSIlya Dryomov } 35485aea3dcdSIlya Dryomov 35495aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 35505aea3dcdSIlya Dryomov kick_osd_requests(osd); 35515aea3dcdSIlya Dryomov maybe_request_map(osdc); 35525aea3dcdSIlya Dryomov 35535aea3dcdSIlya Dryomov out_unlock: 35545aea3dcdSIlya Dryomov up_write(&osdc->lock); 35553d14c5d2SYehuda Sadeh } 35563d14c5d2SYehuda Sadeh 35573d14c5d2SYehuda Sadeh /* 3558a40c4f10SYehuda Sadeh * Process osd watch notifications 3559a40c4f10SYehuda Sadeh */ 35603c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 35613c663bbdSAlex Elder struct ceph_msg *msg) 3562a40c4f10SYehuda Sadeh { 3563922dab61SIlya Dryomov void *p = msg->front.iov_base; 3564922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 3565922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 3566922dab61SIlya Dryomov struct linger_work *lwork; 3567922dab61SIlya Dryomov u8 proto_ver, opcode; 3568922dab61SIlya Dryomov u64 cookie, notify_id; 3569922dab61SIlya Dryomov u64 notifier_id = 0; 357019079203SIlya Dryomov s32 return_code = 0; 3571922dab61SIlya Dryomov void *payload = NULL; 3572922dab61SIlya Dryomov u32 payload_len = 0; 3573a40c4f10SYehuda Sadeh 3574a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 3575a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 3576a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 3577922dab61SIlya Dryomov p += 8; /* skip ver */ 3578a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 3579a40c4f10SYehuda Sadeh 3580922dab61SIlya Dryomov if (proto_ver >= 1) { 3581922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 3582922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 3583922dab61SIlya Dryomov payload = p; 3584922dab61SIlya Dryomov p += payload_len; 3585a40c4f10SYehuda Sadeh } 3586a40c4f10SYehuda Sadeh 3587922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 358819079203SIlya Dryomov ceph_decode_32_safe(&p, end, return_code, bad); 3589922dab61SIlya Dryomov 3590922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 3591922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 3592922dab61SIlya Dryomov 3593922dab61SIlya Dryomov down_read(&osdc->lock); 3594922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 3595922dab61SIlya Dryomov if (!lreq) { 3596922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 3597922dab61SIlya Dryomov cookie); 3598922dab61SIlya Dryomov goto out_unlock_osdc; 3599922dab61SIlya Dryomov } 3600922dab61SIlya Dryomov 3601922dab61SIlya Dryomov mutex_lock(&lreq->lock); 360219079203SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, 360319079203SIlya Dryomov opcode, cookie, lreq, lreq->is_watch); 3604922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 3605922dab61SIlya Dryomov if (!lreq->last_error) { 3606922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 3607922dab61SIlya Dryomov queue_watch_error(lreq); 3608922dab61SIlya Dryomov } 360919079203SIlya Dryomov } else if (!lreq->is_watch) { 361019079203SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ 361119079203SIlya Dryomov if (lreq->notify_id && lreq->notify_id != notify_id) { 361219079203SIlya Dryomov dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, 361319079203SIlya Dryomov lreq->notify_id, notify_id); 361419079203SIlya Dryomov } else if (!completion_done(&lreq->notify_finish_wait)) { 361519079203SIlya Dryomov struct ceph_msg_data *data = 361619079203SIlya Dryomov list_first_entry_or_null(&msg->data, 361719079203SIlya Dryomov struct ceph_msg_data, 361819079203SIlya Dryomov links); 361919079203SIlya Dryomov 362019079203SIlya Dryomov if (data) { 362119079203SIlya Dryomov if (lreq->preply_pages) { 362219079203SIlya Dryomov WARN_ON(data->type != 362319079203SIlya Dryomov CEPH_MSG_DATA_PAGES); 362419079203SIlya Dryomov *lreq->preply_pages = data->pages; 362519079203SIlya Dryomov *lreq->preply_len = data->length; 362619079203SIlya Dryomov } else { 362719079203SIlya Dryomov ceph_release_page_vector(data->pages, 362819079203SIlya Dryomov calc_pages_for(0, data->length)); 362919079203SIlya Dryomov } 363019079203SIlya Dryomov } 363119079203SIlya Dryomov lreq->notify_finish_error = return_code; 363219079203SIlya Dryomov complete_all(&lreq->notify_finish_wait); 363319079203SIlya Dryomov } 3634922dab61SIlya Dryomov } else { 3635922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 3636922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 3637922dab61SIlya Dryomov if (!lwork) { 3638922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 3639922dab61SIlya Dryomov goto out_unlock_lreq; 3640922dab61SIlya Dryomov } 3641922dab61SIlya Dryomov 3642922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 3643922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 3644922dab61SIlya Dryomov lwork->notify.payload = payload; 3645922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 3646922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 3647922dab61SIlya Dryomov lwork_queue(lwork); 3648922dab61SIlya Dryomov } 3649922dab61SIlya Dryomov 3650922dab61SIlya Dryomov out_unlock_lreq: 3651922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3652922dab61SIlya Dryomov out_unlock_osdc: 3653922dab61SIlya Dryomov up_read(&osdc->lock); 3654a40c4f10SYehuda Sadeh return; 3655a40c4f10SYehuda Sadeh 3656a40c4f10SYehuda Sadeh bad: 3657a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 3658a40c4f10SYehuda Sadeh } 3659a40c4f10SYehuda Sadeh 3660a40c4f10SYehuda Sadeh /* 36613d14c5d2SYehuda Sadeh * Register request, send initial attempt. 36623d14c5d2SYehuda Sadeh */ 36633d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 36643d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 36653d14c5d2SYehuda Sadeh bool nofail) 36663d14c5d2SYehuda Sadeh { 36675aea3dcdSIlya Dryomov down_read(&osdc->lock); 36685aea3dcdSIlya Dryomov submit_request(req, false); 36695aea3dcdSIlya Dryomov up_read(&osdc->lock); 36703d14c5d2SYehuda Sadeh 36715aea3dcdSIlya Dryomov return 0; 36723d14c5d2SYehuda Sadeh } 36733d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 36743d14c5d2SYehuda Sadeh 36753d14c5d2SYehuda Sadeh /* 3676c297eb42SIlya Dryomov * Unregister a registered request. The request is not completed: 3677c297eb42SIlya Dryomov * ->r_result isn't set and __complete_request() isn't called. 3678c9f9b93dSIlya Dryomov */ 3679c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 3680c9f9b93dSIlya Dryomov { 3681c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 3682c9f9b93dSIlya Dryomov 36835aea3dcdSIlya Dryomov down_write(&osdc->lock); 36845aea3dcdSIlya Dryomov if (req->r_osd) 36855aea3dcdSIlya Dryomov cancel_request(req); 36865aea3dcdSIlya Dryomov up_write(&osdc->lock); 3687c9f9b93dSIlya Dryomov } 3688c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 3689c9f9b93dSIlya Dryomov 3690c9f9b93dSIlya Dryomov /* 369142b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 369242b06965SIlya Dryomov */ 369342b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 369442b06965SIlya Dryomov unsigned long timeout) 369542b06965SIlya Dryomov { 369642b06965SIlya Dryomov long left; 369742b06965SIlya Dryomov 369842b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 36990e76abf2SYan, Zheng left = wait_for_completion_killable_timeout(&req->r_completion, 370042b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 370142b06965SIlya Dryomov if (left <= 0) { 370242b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 370342b06965SIlya Dryomov ceph_osdc_cancel_request(req); 370442b06965SIlya Dryomov } else { 370542b06965SIlya Dryomov left = req->r_result; /* completed */ 370642b06965SIlya Dryomov } 370742b06965SIlya Dryomov 370842b06965SIlya Dryomov return left; 370942b06965SIlya Dryomov } 371042b06965SIlya Dryomov 371142b06965SIlya Dryomov /* 37123d14c5d2SYehuda Sadeh * wait for a request to complete 37133d14c5d2SYehuda Sadeh */ 37143d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 37153d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 37163d14c5d2SYehuda Sadeh { 371742b06965SIlya Dryomov return wait_request_timeout(req, 0); 37183d14c5d2SYehuda Sadeh } 37193d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 37203d14c5d2SYehuda Sadeh 37213d14c5d2SYehuda Sadeh /* 37223d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 37233d14c5d2SYehuda Sadeh */ 37243d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 37253d14c5d2SYehuda Sadeh { 37265aea3dcdSIlya Dryomov struct rb_node *n, *p; 37275aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 37283d14c5d2SYehuda Sadeh 37295aea3dcdSIlya Dryomov again: 37305aea3dcdSIlya Dryomov down_read(&osdc->lock); 37315aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 37325aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 37335aea3dcdSIlya Dryomov 37345aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 37355aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 37365aea3dcdSIlya Dryomov struct ceph_osd_request *req = 37375aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 37385aea3dcdSIlya Dryomov 37393d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 37403d14c5d2SYehuda Sadeh break; 37413d14c5d2SYehuda Sadeh 37425aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 37433d14c5d2SYehuda Sadeh continue; 37443d14c5d2SYehuda Sadeh 37453d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 37465aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 37475aea3dcdSIlya Dryomov up_read(&osdc->lock); 37485aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 37495aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 3750b18b9550SIlya Dryomov wait_for_completion(&req->r_completion); 37513d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 37525aea3dcdSIlya Dryomov goto again; 37533d14c5d2SYehuda Sadeh } 37545aea3dcdSIlya Dryomov 37555aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 37565aea3dcdSIlya Dryomov } 37575aea3dcdSIlya Dryomov 37585aea3dcdSIlya Dryomov up_read(&osdc->lock); 37595aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 37603d14c5d2SYehuda Sadeh } 37613d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 37623d14c5d2SYehuda Sadeh 3763922dab61SIlya Dryomov static struct ceph_osd_request * 3764922dab61SIlya Dryomov alloc_linger_request(struct ceph_osd_linger_request *lreq) 3765922dab61SIlya Dryomov { 3766922dab61SIlya Dryomov struct ceph_osd_request *req; 3767922dab61SIlya Dryomov 3768922dab61SIlya Dryomov req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); 3769922dab61SIlya Dryomov if (!req) 3770922dab61SIlya Dryomov return NULL; 3771922dab61SIlya Dryomov 3772922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 3773922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 3774922dab61SIlya Dryomov 3775922dab61SIlya Dryomov if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { 3776922dab61SIlya Dryomov ceph_osdc_put_request(req); 3777922dab61SIlya Dryomov return NULL; 3778922dab61SIlya Dryomov } 3779922dab61SIlya Dryomov 3780922dab61SIlya Dryomov return req; 3781922dab61SIlya Dryomov } 3782922dab61SIlya Dryomov 3783922dab61SIlya Dryomov /* 3784922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 3785922dab61SIlya Dryomov */ 3786922dab61SIlya Dryomov struct ceph_osd_linger_request * 3787922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 3788922dab61SIlya Dryomov struct ceph_object_id *oid, 3789922dab61SIlya Dryomov struct ceph_object_locator *oloc, 3790922dab61SIlya Dryomov rados_watchcb2_t wcb, 3791922dab61SIlya Dryomov rados_watcherrcb_t errcb, 3792922dab61SIlya Dryomov void *data) 3793922dab61SIlya Dryomov { 3794922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 3795922dab61SIlya Dryomov int ret; 3796922dab61SIlya Dryomov 3797922dab61SIlya Dryomov lreq = linger_alloc(osdc); 3798922dab61SIlya Dryomov if (!lreq) 3799922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 3800922dab61SIlya Dryomov 380119079203SIlya Dryomov lreq->is_watch = true; 3802922dab61SIlya Dryomov lreq->wcb = wcb; 3803922dab61SIlya Dryomov lreq->errcb = errcb; 3804922dab61SIlya Dryomov lreq->data = data; 3805b07d3c4bSIlya Dryomov lreq->watch_valid_thru = jiffies; 3806922dab61SIlya Dryomov 3807922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 3808922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 380954ea0046SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE; 38101134e091SDeepa Dinamani ktime_get_real_ts(&lreq->mtime); 3811922dab61SIlya Dryomov 3812922dab61SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 3813922dab61SIlya Dryomov if (!lreq->reg_req) { 3814922dab61SIlya Dryomov ret = -ENOMEM; 3815922dab61SIlya Dryomov goto err_put_lreq; 3816922dab61SIlya Dryomov } 3817922dab61SIlya Dryomov 3818922dab61SIlya Dryomov lreq->ping_req = alloc_linger_request(lreq); 3819922dab61SIlya Dryomov if (!lreq->ping_req) { 3820922dab61SIlya Dryomov ret = -ENOMEM; 3821922dab61SIlya Dryomov goto err_put_lreq; 3822922dab61SIlya Dryomov } 3823922dab61SIlya Dryomov 3824922dab61SIlya Dryomov down_write(&osdc->lock); 3825922dab61SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 3826922dab61SIlya Dryomov osd_req_op_watch_init(lreq->reg_req, 0, lreq->linger_id, 3827922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_WATCH); 3828922dab61SIlya Dryomov osd_req_op_watch_init(lreq->ping_req, 0, lreq->linger_id, 3829922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_PING); 3830922dab61SIlya Dryomov linger_submit(lreq); 3831922dab61SIlya Dryomov up_write(&osdc->lock); 3832922dab61SIlya Dryomov 3833922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 3834922dab61SIlya Dryomov if (ret) { 3835922dab61SIlya Dryomov linger_cancel(lreq); 3836922dab61SIlya Dryomov goto err_put_lreq; 3837922dab61SIlya Dryomov } 3838922dab61SIlya Dryomov 3839922dab61SIlya Dryomov return lreq; 3840922dab61SIlya Dryomov 3841922dab61SIlya Dryomov err_put_lreq: 3842922dab61SIlya Dryomov linger_put(lreq); 3843922dab61SIlya Dryomov return ERR_PTR(ret); 3844922dab61SIlya Dryomov } 3845922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 3846922dab61SIlya Dryomov 3847922dab61SIlya Dryomov /* 3848922dab61SIlya Dryomov * Releases a ref. 3849922dab61SIlya Dryomov * 3850922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 3851922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 3852922dab61SIlya Dryomov * with mount_timeout"). 3853922dab61SIlya Dryomov */ 3854922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 3855922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 3856922dab61SIlya Dryomov { 3857922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 3858922dab61SIlya Dryomov struct ceph_osd_request *req; 3859922dab61SIlya Dryomov int ret; 3860922dab61SIlya Dryomov 3861922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 3862922dab61SIlya Dryomov if (!req) 3863922dab61SIlya Dryomov return -ENOMEM; 3864922dab61SIlya Dryomov 3865922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 3866922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 386754ea0046SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE; 38681134e091SDeepa Dinamani ktime_get_real_ts(&req->r_mtime); 3869922dab61SIlya Dryomov osd_req_op_watch_init(req, 0, lreq->linger_id, 3870922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_UNWATCH); 3871922dab61SIlya Dryomov 3872922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 3873922dab61SIlya Dryomov if (ret) 3874922dab61SIlya Dryomov goto out_put_req; 3875922dab61SIlya Dryomov 3876922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 3877922dab61SIlya Dryomov linger_cancel(lreq); 3878922dab61SIlya Dryomov linger_put(lreq); 3879922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 3880922dab61SIlya Dryomov 3881922dab61SIlya Dryomov out_put_req: 3882922dab61SIlya Dryomov ceph_osdc_put_request(req); 3883922dab61SIlya Dryomov return ret; 3884922dab61SIlya Dryomov } 3885922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 3886922dab61SIlya Dryomov 3887922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 3888922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 3889922dab61SIlya Dryomov size_t payload_len) 3890922dab61SIlya Dryomov { 3891922dab61SIlya Dryomov struct ceph_osd_req_op *op; 3892922dab61SIlya Dryomov struct ceph_pagelist *pl; 3893922dab61SIlya Dryomov int ret; 3894922dab61SIlya Dryomov 3895922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 3896922dab61SIlya Dryomov 3897922dab61SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 3898922dab61SIlya Dryomov if (!pl) 3899922dab61SIlya Dryomov return -ENOMEM; 3900922dab61SIlya Dryomov 3901922dab61SIlya Dryomov ceph_pagelist_init(pl); 3902922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 3903922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 3904922dab61SIlya Dryomov if (payload) { 3905922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 3906922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 3907922dab61SIlya Dryomov } else { 3908922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 3909922dab61SIlya Dryomov } 3910922dab61SIlya Dryomov if (ret) { 3911922dab61SIlya Dryomov ceph_pagelist_release(pl); 3912922dab61SIlya Dryomov return -ENOMEM; 3913922dab61SIlya Dryomov } 3914922dab61SIlya Dryomov 3915922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 3916922dab61SIlya Dryomov op->indata_len = pl->length; 3917922dab61SIlya Dryomov return 0; 3918922dab61SIlya Dryomov } 3919922dab61SIlya Dryomov 3920922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 3921922dab61SIlya Dryomov struct ceph_object_id *oid, 3922922dab61SIlya Dryomov struct ceph_object_locator *oloc, 3923922dab61SIlya Dryomov u64 notify_id, 3924922dab61SIlya Dryomov u64 cookie, 3925922dab61SIlya Dryomov void *payload, 3926922dab61SIlya Dryomov size_t payload_len) 3927922dab61SIlya Dryomov { 3928922dab61SIlya Dryomov struct ceph_osd_request *req; 3929922dab61SIlya Dryomov int ret; 3930922dab61SIlya Dryomov 3931922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 3932922dab61SIlya Dryomov if (!req) 3933922dab61SIlya Dryomov return -ENOMEM; 3934922dab61SIlya Dryomov 3935922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 3936922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 3937922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 3938922dab61SIlya Dryomov 3939922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 3940922dab61SIlya Dryomov if (ret) 3941922dab61SIlya Dryomov goto out_put_req; 3942922dab61SIlya Dryomov 3943922dab61SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 3944922dab61SIlya Dryomov payload_len); 3945922dab61SIlya Dryomov if (ret) 3946922dab61SIlya Dryomov goto out_put_req; 3947922dab61SIlya Dryomov 3948922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 3949922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 3950922dab61SIlya Dryomov 3951922dab61SIlya Dryomov out_put_req: 3952922dab61SIlya Dryomov ceph_osdc_put_request(req); 3953922dab61SIlya Dryomov return ret; 3954922dab61SIlya Dryomov } 3955922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 3956922dab61SIlya Dryomov 395719079203SIlya Dryomov static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, 395819079203SIlya Dryomov u64 cookie, u32 prot_ver, u32 timeout, 395919079203SIlya Dryomov void *payload, size_t payload_len) 396019079203SIlya Dryomov { 396119079203SIlya Dryomov struct ceph_osd_req_op *op; 396219079203SIlya Dryomov struct ceph_pagelist *pl; 396319079203SIlya Dryomov int ret; 396419079203SIlya Dryomov 396519079203SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); 396619079203SIlya Dryomov op->notify.cookie = cookie; 396719079203SIlya Dryomov 396819079203SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 396919079203SIlya Dryomov if (!pl) 397019079203SIlya Dryomov return -ENOMEM; 397119079203SIlya Dryomov 397219079203SIlya Dryomov ceph_pagelist_init(pl); 397319079203SIlya Dryomov ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ 397419079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, timeout); 397519079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 397619079203SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 397719079203SIlya Dryomov if (ret) { 397819079203SIlya Dryomov ceph_pagelist_release(pl); 397919079203SIlya Dryomov return -ENOMEM; 398019079203SIlya Dryomov } 398119079203SIlya Dryomov 398219079203SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify.request_data, pl); 398319079203SIlya Dryomov op->indata_len = pl->length; 398419079203SIlya Dryomov return 0; 398519079203SIlya Dryomov } 398619079203SIlya Dryomov 398719079203SIlya Dryomov /* 398819079203SIlya Dryomov * @timeout: in seconds 398919079203SIlya Dryomov * 399019079203SIlya Dryomov * @preply_{pages,len} are initialized both on success and error. 399119079203SIlya Dryomov * The caller is responsible for: 399219079203SIlya Dryomov * 399319079203SIlya Dryomov * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) 399419079203SIlya Dryomov */ 399519079203SIlya Dryomov int ceph_osdc_notify(struct ceph_osd_client *osdc, 399619079203SIlya Dryomov struct ceph_object_id *oid, 399719079203SIlya Dryomov struct ceph_object_locator *oloc, 399819079203SIlya Dryomov void *payload, 399919079203SIlya Dryomov size_t payload_len, 400019079203SIlya Dryomov u32 timeout, 400119079203SIlya Dryomov struct page ***preply_pages, 400219079203SIlya Dryomov size_t *preply_len) 400319079203SIlya Dryomov { 400419079203SIlya Dryomov struct ceph_osd_linger_request *lreq; 400519079203SIlya Dryomov struct page **pages; 400619079203SIlya Dryomov int ret; 400719079203SIlya Dryomov 400819079203SIlya Dryomov WARN_ON(!timeout); 400919079203SIlya Dryomov if (preply_pages) { 401019079203SIlya Dryomov *preply_pages = NULL; 401119079203SIlya Dryomov *preply_len = 0; 401219079203SIlya Dryomov } 401319079203SIlya Dryomov 401419079203SIlya Dryomov lreq = linger_alloc(osdc); 401519079203SIlya Dryomov if (!lreq) 401619079203SIlya Dryomov return -ENOMEM; 401719079203SIlya Dryomov 401819079203SIlya Dryomov lreq->preply_pages = preply_pages; 401919079203SIlya Dryomov lreq->preply_len = preply_len; 402019079203SIlya Dryomov 402119079203SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 402219079203SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 402319079203SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_READ; 402419079203SIlya Dryomov 402519079203SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 402619079203SIlya Dryomov if (!lreq->reg_req) { 402719079203SIlya Dryomov ret = -ENOMEM; 402819079203SIlya Dryomov goto out_put_lreq; 402919079203SIlya Dryomov } 403019079203SIlya Dryomov 403119079203SIlya Dryomov /* for notify_id */ 403219079203SIlya Dryomov pages = ceph_alloc_page_vector(1, GFP_NOIO); 403319079203SIlya Dryomov if (IS_ERR(pages)) { 403419079203SIlya Dryomov ret = PTR_ERR(pages); 403519079203SIlya Dryomov goto out_put_lreq; 403619079203SIlya Dryomov } 403719079203SIlya Dryomov 403819079203SIlya Dryomov down_write(&osdc->lock); 403919079203SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 404019079203SIlya Dryomov ret = osd_req_op_notify_init(lreq->reg_req, 0, lreq->linger_id, 1, 404119079203SIlya Dryomov timeout, payload, payload_len); 404219079203SIlya Dryomov if (ret) { 404319079203SIlya Dryomov linger_unregister(lreq); 404419079203SIlya Dryomov up_write(&osdc->lock); 404519079203SIlya Dryomov ceph_release_page_vector(pages, 1); 404619079203SIlya Dryomov goto out_put_lreq; 404719079203SIlya Dryomov } 404819079203SIlya Dryomov ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, 404919079203SIlya Dryomov response_data), 405019079203SIlya Dryomov pages, PAGE_SIZE, 0, false, true); 405119079203SIlya Dryomov linger_submit(lreq); 405219079203SIlya Dryomov up_write(&osdc->lock); 405319079203SIlya Dryomov 405419079203SIlya Dryomov ret = linger_reg_commit_wait(lreq); 405519079203SIlya Dryomov if (!ret) 405619079203SIlya Dryomov ret = linger_notify_finish_wait(lreq); 405719079203SIlya Dryomov else 405819079203SIlya Dryomov dout("lreq %p failed to initiate notify %d\n", lreq, ret); 405919079203SIlya Dryomov 406019079203SIlya Dryomov linger_cancel(lreq); 406119079203SIlya Dryomov out_put_lreq: 406219079203SIlya Dryomov linger_put(lreq); 406319079203SIlya Dryomov return ret; 406419079203SIlya Dryomov } 406519079203SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify); 406619079203SIlya Dryomov 40673d14c5d2SYehuda Sadeh /* 4068b07d3c4bSIlya Dryomov * Return the number of milliseconds since the watch was last 4069b07d3c4bSIlya Dryomov * confirmed, or an error. If there is an error, the watch is no 4070b07d3c4bSIlya Dryomov * longer valid, and should be destroyed with ceph_osdc_unwatch(). 4071b07d3c4bSIlya Dryomov */ 4072b07d3c4bSIlya Dryomov int ceph_osdc_watch_check(struct ceph_osd_client *osdc, 4073b07d3c4bSIlya Dryomov struct ceph_osd_linger_request *lreq) 4074b07d3c4bSIlya Dryomov { 4075b07d3c4bSIlya Dryomov unsigned long stamp, age; 4076b07d3c4bSIlya Dryomov int ret; 4077b07d3c4bSIlya Dryomov 4078b07d3c4bSIlya Dryomov down_read(&osdc->lock); 4079b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 4080b07d3c4bSIlya Dryomov stamp = lreq->watch_valid_thru; 4081b07d3c4bSIlya Dryomov if (!list_empty(&lreq->pending_lworks)) { 4082b07d3c4bSIlya Dryomov struct linger_work *lwork = 4083b07d3c4bSIlya Dryomov list_first_entry(&lreq->pending_lworks, 4084b07d3c4bSIlya Dryomov struct linger_work, 4085b07d3c4bSIlya Dryomov pending_item); 4086b07d3c4bSIlya Dryomov 4087b07d3c4bSIlya Dryomov if (time_before(lwork->queued_stamp, stamp)) 4088b07d3c4bSIlya Dryomov stamp = lwork->queued_stamp; 4089b07d3c4bSIlya Dryomov } 4090b07d3c4bSIlya Dryomov age = jiffies - stamp; 4091b07d3c4bSIlya Dryomov dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, 4092b07d3c4bSIlya Dryomov lreq, lreq->linger_id, age, lreq->last_error); 4093b07d3c4bSIlya Dryomov /* we are truncating to msecs, so return a safe upper bound */ 4094b07d3c4bSIlya Dryomov ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); 4095b07d3c4bSIlya Dryomov 4096b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 4097b07d3c4bSIlya Dryomov up_read(&osdc->lock); 4098b07d3c4bSIlya Dryomov return ret; 4099b07d3c4bSIlya Dryomov } 4100b07d3c4bSIlya Dryomov 4101a4ed38d7SDouglas Fuller static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) 4102a4ed38d7SDouglas Fuller { 4103a4ed38d7SDouglas Fuller u8 struct_v; 4104a4ed38d7SDouglas Fuller u32 struct_len; 4105a4ed38d7SDouglas Fuller int ret; 4106a4ed38d7SDouglas Fuller 4107a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 2, "watch_item_t", 4108a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4109a4ed38d7SDouglas Fuller if (ret) 4110a4ed38d7SDouglas Fuller return ret; 4111a4ed38d7SDouglas Fuller 4112a4ed38d7SDouglas Fuller ceph_decode_copy(p, &item->name, sizeof(item->name)); 4113a4ed38d7SDouglas Fuller item->cookie = ceph_decode_64(p); 4114a4ed38d7SDouglas Fuller *p += 4; /* skip timeout_seconds */ 4115a4ed38d7SDouglas Fuller if (struct_v >= 2) { 4116a4ed38d7SDouglas Fuller ceph_decode_copy(p, &item->addr, sizeof(item->addr)); 4117a4ed38d7SDouglas Fuller ceph_decode_addr(&item->addr); 4118a4ed38d7SDouglas Fuller } 4119a4ed38d7SDouglas Fuller 4120a4ed38d7SDouglas Fuller dout("%s %s%llu cookie %llu addr %s\n", __func__, 4121a4ed38d7SDouglas Fuller ENTITY_NAME(item->name), item->cookie, 4122a4ed38d7SDouglas Fuller ceph_pr_addr(&item->addr.in_addr)); 4123a4ed38d7SDouglas Fuller return 0; 4124a4ed38d7SDouglas Fuller } 4125a4ed38d7SDouglas Fuller 4126a4ed38d7SDouglas Fuller static int decode_watchers(void **p, void *end, 4127a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4128a4ed38d7SDouglas Fuller u32 *num_watchers) 4129a4ed38d7SDouglas Fuller { 4130a4ed38d7SDouglas Fuller u8 struct_v; 4131a4ed38d7SDouglas Fuller u32 struct_len; 4132a4ed38d7SDouglas Fuller int i; 4133a4ed38d7SDouglas Fuller int ret; 4134a4ed38d7SDouglas Fuller 4135a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t", 4136a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4137a4ed38d7SDouglas Fuller if (ret) 4138a4ed38d7SDouglas Fuller return ret; 4139a4ed38d7SDouglas Fuller 4140a4ed38d7SDouglas Fuller *num_watchers = ceph_decode_32(p); 4141a4ed38d7SDouglas Fuller *watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO); 4142a4ed38d7SDouglas Fuller if (!*watchers) 4143a4ed38d7SDouglas Fuller return -ENOMEM; 4144a4ed38d7SDouglas Fuller 4145a4ed38d7SDouglas Fuller for (i = 0; i < *num_watchers; i++) { 4146a4ed38d7SDouglas Fuller ret = decode_watcher(p, end, *watchers + i); 4147a4ed38d7SDouglas Fuller if (ret) { 4148a4ed38d7SDouglas Fuller kfree(*watchers); 4149a4ed38d7SDouglas Fuller return ret; 4150a4ed38d7SDouglas Fuller } 4151a4ed38d7SDouglas Fuller } 4152a4ed38d7SDouglas Fuller 4153a4ed38d7SDouglas Fuller return 0; 4154a4ed38d7SDouglas Fuller } 4155a4ed38d7SDouglas Fuller 4156a4ed38d7SDouglas Fuller /* 4157a4ed38d7SDouglas Fuller * On success, the caller is responsible for: 4158a4ed38d7SDouglas Fuller * 4159a4ed38d7SDouglas Fuller * kfree(watchers); 4160a4ed38d7SDouglas Fuller */ 4161a4ed38d7SDouglas Fuller int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, 4162a4ed38d7SDouglas Fuller struct ceph_object_id *oid, 4163a4ed38d7SDouglas Fuller struct ceph_object_locator *oloc, 4164a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4165a4ed38d7SDouglas Fuller u32 *num_watchers) 4166a4ed38d7SDouglas Fuller { 4167a4ed38d7SDouglas Fuller struct ceph_osd_request *req; 4168a4ed38d7SDouglas Fuller struct page **pages; 4169a4ed38d7SDouglas Fuller int ret; 4170a4ed38d7SDouglas Fuller 4171a4ed38d7SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4172a4ed38d7SDouglas Fuller if (!req) 4173a4ed38d7SDouglas Fuller return -ENOMEM; 4174a4ed38d7SDouglas Fuller 4175a4ed38d7SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 4176a4ed38d7SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 4177a4ed38d7SDouglas Fuller req->r_flags = CEPH_OSD_FLAG_READ; 4178a4ed38d7SDouglas Fuller 4179a4ed38d7SDouglas Fuller ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4180a4ed38d7SDouglas Fuller if (ret) 4181a4ed38d7SDouglas Fuller goto out_put_req; 4182a4ed38d7SDouglas Fuller 4183a4ed38d7SDouglas Fuller pages = ceph_alloc_page_vector(1, GFP_NOIO); 4184a4ed38d7SDouglas Fuller if (IS_ERR(pages)) { 4185a4ed38d7SDouglas Fuller ret = PTR_ERR(pages); 4186a4ed38d7SDouglas Fuller goto out_put_req; 4187a4ed38d7SDouglas Fuller } 4188a4ed38d7SDouglas Fuller 4189a4ed38d7SDouglas Fuller osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0); 4190a4ed38d7SDouglas Fuller ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers, 4191a4ed38d7SDouglas Fuller response_data), 4192a4ed38d7SDouglas Fuller pages, PAGE_SIZE, 0, false, true); 4193a4ed38d7SDouglas Fuller 4194a4ed38d7SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 4195a4ed38d7SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 4196a4ed38d7SDouglas Fuller if (ret >= 0) { 4197a4ed38d7SDouglas Fuller void *p = page_address(pages[0]); 4198a4ed38d7SDouglas Fuller void *const end = p + req->r_ops[0].outdata_len; 4199a4ed38d7SDouglas Fuller 4200a4ed38d7SDouglas Fuller ret = decode_watchers(&p, end, watchers, num_watchers); 4201a4ed38d7SDouglas Fuller } 4202a4ed38d7SDouglas Fuller 4203a4ed38d7SDouglas Fuller out_put_req: 4204a4ed38d7SDouglas Fuller ceph_osdc_put_request(req); 4205a4ed38d7SDouglas Fuller return ret; 4206a4ed38d7SDouglas Fuller } 4207a4ed38d7SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_list_watchers); 4208a4ed38d7SDouglas Fuller 4209b07d3c4bSIlya Dryomov /* 4210dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 4211dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 4212dd935f44SJosh Durgin */ 4213f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 4214dd935f44SJosh Durgin { 421599d16943SIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 4216dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 4217dd935f44SJosh Durgin } 4218dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 4219dd935f44SJosh Durgin 42207cca78c9SIlya Dryomov void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) 42217cca78c9SIlya Dryomov { 42227cca78c9SIlya Dryomov down_read(&osdc->lock); 42237cca78c9SIlya Dryomov maybe_request_map(osdc); 42247cca78c9SIlya Dryomov up_read(&osdc->lock); 42257cca78c9SIlya Dryomov } 42267cca78c9SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_maybe_request_map); 4227dd935f44SJosh Durgin 4228dd935f44SJosh Durgin /* 4229428a7158SDouglas Fuller * Execute an OSD class method on an object. 4230428a7158SDouglas Fuller * 4231428a7158SDouglas Fuller * @flags: CEPH_OSD_FLAG_* 42322544a020SIlya Dryomov * @resp_len: in/out param for reply length 4233428a7158SDouglas Fuller */ 4234428a7158SDouglas Fuller int ceph_osdc_call(struct ceph_osd_client *osdc, 4235428a7158SDouglas Fuller struct ceph_object_id *oid, 4236428a7158SDouglas Fuller struct ceph_object_locator *oloc, 4237428a7158SDouglas Fuller const char *class, const char *method, 4238428a7158SDouglas Fuller unsigned int flags, 4239428a7158SDouglas Fuller struct page *req_page, size_t req_len, 4240428a7158SDouglas Fuller struct page *resp_page, size_t *resp_len) 4241428a7158SDouglas Fuller { 4242428a7158SDouglas Fuller struct ceph_osd_request *req; 4243428a7158SDouglas Fuller int ret; 4244428a7158SDouglas Fuller 42452544a020SIlya Dryomov if (req_len > PAGE_SIZE || (resp_page && *resp_len > PAGE_SIZE)) 42462544a020SIlya Dryomov return -E2BIG; 42472544a020SIlya Dryomov 4248428a7158SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4249428a7158SDouglas Fuller if (!req) 4250428a7158SDouglas Fuller return -ENOMEM; 4251428a7158SDouglas Fuller 4252428a7158SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 4253428a7158SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 4254428a7158SDouglas Fuller req->r_flags = flags; 4255428a7158SDouglas Fuller 4256428a7158SDouglas Fuller ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4257428a7158SDouglas Fuller if (ret) 4258428a7158SDouglas Fuller goto out_put_req; 4259428a7158SDouglas Fuller 4260428a7158SDouglas Fuller osd_req_op_cls_init(req, 0, CEPH_OSD_OP_CALL, class, method); 4261428a7158SDouglas Fuller if (req_page) 4262428a7158SDouglas Fuller osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len, 4263428a7158SDouglas Fuller 0, false, false); 4264428a7158SDouglas Fuller if (resp_page) 4265428a7158SDouglas Fuller osd_req_op_cls_response_data_pages(req, 0, &resp_page, 42662544a020SIlya Dryomov *resp_len, 0, false, false); 4267428a7158SDouglas Fuller 4268428a7158SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 4269428a7158SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 4270428a7158SDouglas Fuller if (ret >= 0) { 4271428a7158SDouglas Fuller ret = req->r_ops[0].rval; 4272428a7158SDouglas Fuller if (resp_page) 4273428a7158SDouglas Fuller *resp_len = req->r_ops[0].outdata_len; 4274428a7158SDouglas Fuller } 4275428a7158SDouglas Fuller 4276428a7158SDouglas Fuller out_put_req: 4277428a7158SDouglas Fuller ceph_osdc_put_request(req); 4278428a7158SDouglas Fuller return ret; 4279428a7158SDouglas Fuller } 4280428a7158SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_call); 4281428a7158SDouglas Fuller 4282428a7158SDouglas Fuller /* 42833d14c5d2SYehuda Sadeh * init, shutdown 42843d14c5d2SYehuda Sadeh */ 42853d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 42863d14c5d2SYehuda Sadeh { 42873d14c5d2SYehuda Sadeh int err; 42883d14c5d2SYehuda Sadeh 42893d14c5d2SYehuda Sadeh dout("init\n"); 42903d14c5d2SYehuda Sadeh osdc->client = client; 42915aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 42923d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 42933d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 42949dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 42955aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 42965aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 42975aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 4298264048afSIlya Dryomov osdc->last_linger_id = CEPH_LINGER_ID_START; 4299922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 43004609245eSIlya Dryomov osdc->map_checks = RB_ROOT; 43014609245eSIlya Dryomov osdc->linger_map_checks = RB_ROOT; 43023d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 43033d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 43043d14c5d2SYehuda Sadeh 43053d14c5d2SYehuda Sadeh err = -ENOMEM; 4306e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 4307e5253a7bSIlya Dryomov if (!osdc->osdmap) 4308e5253a7bSIlya Dryomov goto out; 4309e5253a7bSIlya Dryomov 43109e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 43119e767adbSIlya Dryomov ceph_osd_request_cache); 43123d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 4313e5253a7bSIlya Dryomov goto out_map; 43143d14c5d2SYehuda Sadeh 4315d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 4316711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 43173d14c5d2SYehuda Sadeh if (err < 0) 43183d14c5d2SYehuda Sadeh goto out_mempool; 4319d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 4320711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 43213d14c5d2SYehuda Sadeh if (err < 0) 43223d14c5d2SYehuda Sadeh goto out_msgpool; 4323a40c4f10SYehuda Sadeh 4324dbcae088SDan Carpenter err = -ENOMEM; 4325a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 4326dbcae088SDan Carpenter if (!osdc->notify_wq) 4327c172ec5cSIlya Dryomov goto out_msgpool_reply; 4328c172ec5cSIlya Dryomov 4329fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 4330fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 4331b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 4332b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 4333b37ee1b9SIlya Dryomov 43343d14c5d2SYehuda Sadeh return 0; 43353d14c5d2SYehuda Sadeh 4336c172ec5cSIlya Dryomov out_msgpool_reply: 4337c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 43383d14c5d2SYehuda Sadeh out_msgpool: 43393d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 43403d14c5d2SYehuda Sadeh out_mempool: 43413d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 4342e5253a7bSIlya Dryomov out_map: 4343e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 43443d14c5d2SYehuda Sadeh out: 43453d14c5d2SYehuda Sadeh return err; 43463d14c5d2SYehuda Sadeh } 43473d14c5d2SYehuda Sadeh 43483d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 43493d14c5d2SYehuda Sadeh { 4350a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 4351a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 43523d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 43533d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 435442a2c09fSIlya Dryomov 43555aea3dcdSIlya Dryomov down_write(&osdc->lock); 435642a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 435742a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 435842a2c09fSIlya Dryomov struct ceph_osd, o_node); 43595aea3dcdSIlya Dryomov close_osd(osd); 436042a2c09fSIlya Dryomov } 43615aea3dcdSIlya Dryomov up_write(&osdc->lock); 436202113a0fSElena Reshetova WARN_ON(refcount_read(&osdc->homeless_osd.o_ref) != 1); 43635aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 43645aea3dcdSIlya Dryomov 43655aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 4366922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 43674609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); 43684609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); 43695aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 43705aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 437142a2c09fSIlya Dryomov 43723d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 43733d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 43743d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 43753d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 43763d14c5d2SYehuda Sadeh } 43773d14c5d2SYehuda Sadeh 43783d14c5d2SYehuda Sadeh /* 43793d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 43803d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 43813d14c5d2SYehuda Sadeh */ 43823d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 43833d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 43843d14c5d2SYehuda Sadeh u64 off, u64 *plen, 43853d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 4386b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 43873d14c5d2SYehuda Sadeh { 43883d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 43893d14c5d2SYehuda Sadeh int rc = 0; 43903d14c5d2SYehuda Sadeh 43913d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 43923d14c5d2SYehuda Sadeh vino.snap, off, *plen); 4393715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 43943d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 4395acead002SAlex Elder NULL, truncate_seq, truncate_size, 4396153e5167SAlex Elder false); 43976816282dSSage Weil if (IS_ERR(req)) 43986816282dSSage Weil return PTR_ERR(req); 43993d14c5d2SYehuda Sadeh 44003d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 4401406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 4402a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 44033d14c5d2SYehuda Sadeh 4404e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 440543bfe5deSAlex Elder off, *plen, *plen, page_align); 44063d14c5d2SYehuda Sadeh 44073d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 44083d14c5d2SYehuda Sadeh if (!rc) 44093d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 44103d14c5d2SYehuda Sadeh 44113d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 44123d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 44133d14c5d2SYehuda Sadeh return rc; 44143d14c5d2SYehuda Sadeh } 44153d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 44163d14c5d2SYehuda Sadeh 44173d14c5d2SYehuda Sadeh /* 44183d14c5d2SYehuda Sadeh * do a synchronous write on N pages 44193d14c5d2SYehuda Sadeh */ 44203d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 44213d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 44223d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 44233d14c5d2SYehuda Sadeh u64 off, u64 len, 44243d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 44253d14c5d2SYehuda Sadeh struct timespec *mtime, 442624808826SAlex Elder struct page **pages, int num_pages) 44273d14c5d2SYehuda Sadeh { 44283d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 44293d14c5d2SYehuda Sadeh int rc = 0; 4430b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 44313d14c5d2SYehuda Sadeh 4432715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 443354ea0046SIlya Dryomov CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE, 4434acead002SAlex Elder snapc, truncate_seq, truncate_size, 4435153e5167SAlex Elder true); 44366816282dSSage Weil if (IS_ERR(req)) 44376816282dSSage Weil return PTR_ERR(req); 44383d14c5d2SYehuda Sadeh 44393d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 4440406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 444143bfe5deSAlex Elder false, false); 444243bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 44433d14c5d2SYehuda Sadeh 4444bb873b53SIlya Dryomov req->r_mtime = *mtime; 444587f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 44463d14c5d2SYehuda Sadeh if (!rc) 44473d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 44483d14c5d2SYehuda Sadeh 44493d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 44503d14c5d2SYehuda Sadeh if (rc == 0) 44513d14c5d2SYehuda Sadeh rc = len; 44523d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 44533d14c5d2SYehuda Sadeh return rc; 44543d14c5d2SYehuda Sadeh } 44553d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 44563d14c5d2SYehuda Sadeh 44575522ae0bSAlex Elder int ceph_osdc_setup(void) 44585522ae0bSAlex Elder { 44593f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 44603f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 44613f1af42aSIlya Dryomov 44625522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 44633f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 44643f1af42aSIlya Dryomov 0, 0, NULL); 44655522ae0bSAlex Elder 44665522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 44675522ae0bSAlex Elder } 44685522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 44695522ae0bSAlex Elder 44705522ae0bSAlex Elder void ceph_osdc_cleanup(void) 44715522ae0bSAlex Elder { 44725522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 44735522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 44745522ae0bSAlex Elder ceph_osd_request_cache = NULL; 44755522ae0bSAlex Elder } 44765522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 44775522ae0bSAlex Elder 44783d14c5d2SYehuda Sadeh /* 44793d14c5d2SYehuda Sadeh * handle incoming message 44803d14c5d2SYehuda Sadeh */ 44813d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 44823d14c5d2SYehuda Sadeh { 44833d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 44845aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 44853d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 44863d14c5d2SYehuda Sadeh 44873d14c5d2SYehuda Sadeh switch (type) { 44883d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 44893d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 44903d14c5d2SYehuda Sadeh break; 44913d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 44925aea3dcdSIlya Dryomov handle_reply(osd, msg); 44933d14c5d2SYehuda Sadeh break; 4494a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 4495a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 4496a40c4f10SYehuda Sadeh break; 44973d14c5d2SYehuda Sadeh 44983d14c5d2SYehuda Sadeh default: 44993d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 45003d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 45013d14c5d2SYehuda Sadeh } 45025aea3dcdSIlya Dryomov 45033d14c5d2SYehuda Sadeh ceph_msg_put(msg); 45043d14c5d2SYehuda Sadeh } 45053d14c5d2SYehuda Sadeh 45063d14c5d2SYehuda Sadeh /* 4507d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 4508d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 4509d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 45103d14c5d2SYehuda Sadeh */ 45113d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 45123d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 45133d14c5d2SYehuda Sadeh int *skip) 45143d14c5d2SYehuda Sadeh { 45153d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 45163d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 45175aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 45183d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 45193f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 45203d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 45215aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 45223d14c5d2SYehuda Sadeh 45235aea3dcdSIlya Dryomov down_read(&osdc->lock); 45245aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 45255aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 45265aea3dcdSIlya Dryomov *skip = 1; 45275aea3dcdSIlya Dryomov goto out_unlock_osdc; 45285aea3dcdSIlya Dryomov } 45295aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 45305aea3dcdSIlya Dryomov 45315aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 45325aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 45333d14c5d2SYehuda Sadeh if (!req) { 4534cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 4535cd8140c6SIlya Dryomov osd->o_osd, tid); 4536d15f9d69SIlya Dryomov *skip = 1; 45375aea3dcdSIlya Dryomov goto out_unlock_session; 45383d14c5d2SYehuda Sadeh } 45393d14c5d2SYehuda Sadeh 45408921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 45413d14c5d2SYehuda Sadeh 4542f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 4543d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 4544d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 4545d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 45463f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 45473f0a4ac5SIlya Dryomov false); 45483d14c5d2SYehuda Sadeh if (!m) 45495aea3dcdSIlya Dryomov goto out_unlock_session; 45503d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 45513d14c5d2SYehuda Sadeh req->r_reply = m; 45523d14c5d2SYehuda Sadeh } 45533d14c5d2SYehuda Sadeh 4554d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 4555d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 4556d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 4557d15f9d69SIlya Dryomov req->r_reply->data_length); 45583d14c5d2SYehuda Sadeh m = NULL; 4559d15f9d69SIlya Dryomov *skip = 1; 45605aea3dcdSIlya Dryomov goto out_unlock_session; 45613d14c5d2SYehuda Sadeh } 4562d15f9d69SIlya Dryomov 4563d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 45643d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 45653d14c5d2SYehuda Sadeh 45665aea3dcdSIlya Dryomov out_unlock_session: 45675aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 45685aea3dcdSIlya Dryomov out_unlock_osdc: 45695aea3dcdSIlya Dryomov up_read(&osdc->lock); 45703d14c5d2SYehuda Sadeh return m; 45713d14c5d2SYehuda Sadeh } 45723d14c5d2SYehuda Sadeh 457319079203SIlya Dryomov /* 457419079203SIlya Dryomov * TODO: switch to a msg-owned pagelist 457519079203SIlya Dryomov */ 457619079203SIlya Dryomov static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) 457719079203SIlya Dryomov { 457819079203SIlya Dryomov struct ceph_msg *m; 457919079203SIlya Dryomov int type = le16_to_cpu(hdr->type); 458019079203SIlya Dryomov u32 front_len = le32_to_cpu(hdr->front_len); 458119079203SIlya Dryomov u32 data_len = le32_to_cpu(hdr->data_len); 458219079203SIlya Dryomov 458319079203SIlya Dryomov m = ceph_msg_new(type, front_len, GFP_NOIO, false); 458419079203SIlya Dryomov if (!m) 458519079203SIlya Dryomov return NULL; 458619079203SIlya Dryomov 458719079203SIlya Dryomov if (data_len) { 458819079203SIlya Dryomov struct page **pages; 458919079203SIlya Dryomov struct ceph_osd_data osd_data; 459019079203SIlya Dryomov 459119079203SIlya Dryomov pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), 459219079203SIlya Dryomov GFP_NOIO); 4593c22e853aSWei Yongjun if (IS_ERR(pages)) { 459419079203SIlya Dryomov ceph_msg_put(m); 459519079203SIlya Dryomov return NULL; 459619079203SIlya Dryomov } 459719079203SIlya Dryomov 459819079203SIlya Dryomov ceph_osd_data_pages_init(&osd_data, pages, data_len, 0, false, 459919079203SIlya Dryomov false); 460019079203SIlya Dryomov ceph_osdc_msg_data_add(m, &osd_data); 460119079203SIlya Dryomov } 460219079203SIlya Dryomov 460319079203SIlya Dryomov return m; 460419079203SIlya Dryomov } 460519079203SIlya Dryomov 46063d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 46073d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 46083d14c5d2SYehuda Sadeh int *skip) 46093d14c5d2SYehuda Sadeh { 46103d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 46113d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 46123d14c5d2SYehuda Sadeh 46131c20f2d2SAlex Elder *skip = 0; 46143d14c5d2SYehuda Sadeh switch (type) { 46153d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 4616a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 461719079203SIlya Dryomov return alloc_msg_with_page_vector(hdr); 46183d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 46193d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 46203d14c5d2SYehuda Sadeh default: 46215aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 46225aea3dcdSIlya Dryomov osd->o_osd, type); 46233d14c5d2SYehuda Sadeh *skip = 1; 46243d14c5d2SYehuda Sadeh return NULL; 46253d14c5d2SYehuda Sadeh } 46263d14c5d2SYehuda Sadeh } 46273d14c5d2SYehuda Sadeh 46283d14c5d2SYehuda Sadeh /* 46293d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 46303d14c5d2SYehuda Sadeh */ 46313d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 46323d14c5d2SYehuda Sadeh { 46333d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 46343d14c5d2SYehuda Sadeh if (get_osd(osd)) 46353d14c5d2SYehuda Sadeh return con; 46363d14c5d2SYehuda Sadeh return NULL; 46373d14c5d2SYehuda Sadeh } 46383d14c5d2SYehuda Sadeh 46393d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 46403d14c5d2SYehuda Sadeh { 46413d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 46423d14c5d2SYehuda Sadeh put_osd(osd); 46433d14c5d2SYehuda Sadeh } 46443d14c5d2SYehuda Sadeh 46453d14c5d2SYehuda Sadeh /* 46463d14c5d2SYehuda Sadeh * authentication 46473d14c5d2SYehuda Sadeh */ 4648a3530df3SAlex Elder /* 4649a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 4650a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 4651a3530df3SAlex Elder */ 4652a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 46538f43fb53SAlex Elder int *proto, int force_new) 46543d14c5d2SYehuda Sadeh { 46553d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 46563d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 46573d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 465874f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 46593d14c5d2SYehuda Sadeh 466074f1869fSAlex Elder if (force_new && auth->authorizer) { 46616c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 466274f1869fSAlex Elder auth->authorizer = NULL; 46633d14c5d2SYehuda Sadeh } 466427859f97SSage Weil if (!auth->authorizer) { 466527859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 4666a3530df3SAlex Elder auth); 46673d14c5d2SYehuda Sadeh if (ret) 4668a3530df3SAlex Elder return ERR_PTR(ret); 466927859f97SSage Weil } else { 467027859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 46710bed9b5cSSage Weil auth); 46720bed9b5cSSage Weil if (ret) 46730bed9b5cSSage Weil return ERR_PTR(ret); 46743d14c5d2SYehuda Sadeh } 46753d14c5d2SYehuda Sadeh *proto = ac->protocol; 467674f1869fSAlex Elder 4677a3530df3SAlex Elder return auth; 46783d14c5d2SYehuda Sadeh } 46793d14c5d2SYehuda Sadeh 46803d14c5d2SYehuda Sadeh 46810dde5848SIlya Dryomov static int verify_authorizer_reply(struct ceph_connection *con) 46823d14c5d2SYehuda Sadeh { 46833d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 46843d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 46853d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 46863d14c5d2SYehuda Sadeh 46870dde5848SIlya Dryomov return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer); 46883d14c5d2SYehuda Sadeh } 46893d14c5d2SYehuda Sadeh 46903d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 46913d14c5d2SYehuda Sadeh { 46923d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 46933d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 46943d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 46953d14c5d2SYehuda Sadeh 469627859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 46973d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 46983d14c5d2SYehuda Sadeh } 46993d14c5d2SYehuda Sadeh 47008cb441c0SIlya Dryomov static void osd_reencode_message(struct ceph_msg *msg) 47018cb441c0SIlya Dryomov { 47028cb441c0SIlya Dryomov encode_request_finish(msg); 47038cb441c0SIlya Dryomov } 47048cb441c0SIlya Dryomov 470579dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 470633d07337SYan, Zheng { 470779dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 470833d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 470979dbd1baSIlya Dryomov 471033d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 471133d07337SYan, Zheng } 471233d07337SYan, Zheng 471379dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 471433d07337SYan, Zheng { 471579dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 471633d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 471779dbd1baSIlya Dryomov 471833d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 471933d07337SYan, Zheng } 472033d07337SYan, Zheng 47213d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 47223d14c5d2SYehuda Sadeh .get = get_osd_con, 47233d14c5d2SYehuda Sadeh .put = put_osd_con, 47243d14c5d2SYehuda Sadeh .dispatch = dispatch, 47253d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 47263d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 47273d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 47283d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 47298cb441c0SIlya Dryomov .reencode_message = osd_reencode_message, 473079dbd1baSIlya Dryomov .sign_message = osd_sign_message, 473179dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 47325aea3dcdSIlya Dryomov .fault = osd_fault, 47333d14c5d2SYehuda Sadeh }; 4734