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, 132263244fa1SIlya Dryomov bool any_change) 132363244fa1SIlya Dryomov { 132463244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 132563244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 132663244fa1SIlya Dryomov struct ceph_osds up, acting; 132763244fa1SIlya Dryomov bool force_resend = false; 132884ed45dfSIlya Dryomov bool unpaused = false; 132984ed45dfSIlya Dryomov bool legacy_change; 133063244fa1SIlya Dryomov bool need_check_tiering = false; 1331b7ec35b3SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); 133263244fa1SIlya Dryomov enum calc_target_result ct_res; 133363244fa1SIlya Dryomov int ret; 133463244fa1SIlya Dryomov 133563244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 133663244fa1SIlya Dryomov if (!pi) { 133763244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 133863244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 133963244fa1SIlya Dryomov goto out; 134063244fa1SIlya Dryomov } 134163244fa1SIlya Dryomov 134263244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 1343dc93e0e2SIlya Dryomov if (t->last_force_resend < pi->last_force_request_resend) { 1344dc93e0e2SIlya Dryomov t->last_force_resend = pi->last_force_request_resend; 134563244fa1SIlya Dryomov force_resend = true; 1346dc93e0e2SIlya Dryomov } else if (t->last_force_resend == 0) { 134763244fa1SIlya Dryomov force_resend = true; 134863244fa1SIlya Dryomov } 134963244fa1SIlya Dryomov } 135063244fa1SIlya Dryomov if (ceph_oid_empty(&t->target_oid) || force_resend) { 135163244fa1SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 135263244fa1SIlya Dryomov need_check_tiering = true; 135363244fa1SIlya Dryomov } 135463244fa1SIlya Dryomov if (ceph_oloc_empty(&t->target_oloc) || force_resend) { 135563244fa1SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 135663244fa1SIlya Dryomov need_check_tiering = true; 135763244fa1SIlya Dryomov } 135863244fa1SIlya Dryomov 135963244fa1SIlya Dryomov if (need_check_tiering && 136063244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 136163244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) 136263244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 136363244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) 136463244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 136563244fa1SIlya Dryomov } 136663244fa1SIlya Dryomov 136763244fa1SIlya Dryomov ret = ceph_object_locator_to_pg(osdc->osdmap, &t->target_oid, 136863244fa1SIlya Dryomov &t->target_oloc, &pgid); 136963244fa1SIlya Dryomov if (ret) { 137063244fa1SIlya Dryomov WARN_ON(ret != -ENOENT); 137163244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 137263244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 137363244fa1SIlya Dryomov goto out; 137463244fa1SIlya Dryomov } 137563244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 137663244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 137763244fa1SIlya Dryomov 137863244fa1SIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting); 137963244fa1SIlya Dryomov if (any_change && 138063244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 138163244fa1SIlya Dryomov &acting, 138263244fa1SIlya Dryomov &t->up, 138363244fa1SIlya Dryomov &up, 138463244fa1SIlya Dryomov t->size, 138563244fa1SIlya Dryomov pi->size, 138663244fa1SIlya Dryomov t->min_size, 138763244fa1SIlya Dryomov pi->min_size, 138863244fa1SIlya Dryomov t->pg_num, 138963244fa1SIlya Dryomov pi->pg_num, 139063244fa1SIlya Dryomov t->sort_bitwise, 139163244fa1SIlya Dryomov sort_bitwise, 139263244fa1SIlya Dryomov &last_pgid)) 139363244fa1SIlya Dryomov force_resend = true; 139463244fa1SIlya Dryomov 139563244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 139663244fa1SIlya Dryomov t->paused = false; 139784ed45dfSIlya Dryomov unpaused = true; 139863244fa1SIlya Dryomov } 139984ed45dfSIlya Dryomov legacy_change = ceph_pg_compare(&t->pgid, &pgid) || 140084ed45dfSIlya Dryomov ceph_osds_changed(&t->acting, &acting, any_change); 140163244fa1SIlya Dryomov 140284ed45dfSIlya Dryomov if (legacy_change || force_resend) { 140363244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 1404dc98ff72SIlya Dryomov ceph_pg_to_primary_shard(osdc->osdmap, &pgid, &t->spgid); 140563244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 140663244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 140763244fa1SIlya Dryomov t->size = pi->size; 140863244fa1SIlya Dryomov t->min_size = pi->min_size; 140963244fa1SIlya Dryomov t->pg_num = pi->pg_num; 141063244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 141163244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 141263244fa1SIlya Dryomov 141363244fa1SIlya Dryomov t->osd = acting.primary; 141463244fa1SIlya Dryomov } 141563244fa1SIlya Dryomov 141684ed45dfSIlya Dryomov if (unpaused || legacy_change || force_resend) 141784ed45dfSIlya Dryomov ct_res = CALC_TARGET_NEED_RESEND; 141884ed45dfSIlya Dryomov else 141984ed45dfSIlya Dryomov ct_res = CALC_TARGET_NO_ACTION; 142084ed45dfSIlya Dryomov 142163244fa1SIlya Dryomov out: 142263244fa1SIlya Dryomov dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); 142363244fa1SIlya Dryomov return ct_res; 142463244fa1SIlya Dryomov } 142563244fa1SIlya Dryomov 1426bb873b53SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req, 1427bb873b53SIlya Dryomov struct ceph_msg *msg) 14283d14c5d2SYehuda Sadeh { 1429bb873b53SIlya Dryomov u32 data_len = 0; 1430bb873b53SIlya Dryomov int i; 14313d14c5d2SYehuda Sadeh 1432bb873b53SIlya Dryomov if (!list_empty(&msg->data)) 1433bb873b53SIlya Dryomov return; 14343d14c5d2SYehuda Sadeh 1435bb873b53SIlya Dryomov WARN_ON(msg->data_length); 1436bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1437bb873b53SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[i]; 1438bb873b53SIlya Dryomov 1439bb873b53SIlya Dryomov switch (op->op) { 1440bb873b53SIlya Dryomov /* request */ 1441bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 1442bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 1443bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 1444bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->extent.osd_data); 1445bb873b53SIlya Dryomov break; 1446bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 1447bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 1448bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 1449bb873b53SIlya Dryomov op->xattr.value_len); 1450bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->xattr.osd_data); 1451bb873b53SIlya Dryomov break; 1452922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 1453922dab61SIlya Dryomov ceph_osdc_msg_data_add(msg, 1454922dab61SIlya Dryomov &op->notify_ack.request_data); 1455922dab61SIlya Dryomov break; 1456bb873b53SIlya Dryomov 1457bb873b53SIlya Dryomov /* reply */ 1458bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 1459bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1460bb873b53SIlya Dryomov &op->raw_data_in); 1461bb873b53SIlya Dryomov break; 1462bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 1463bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1464bb873b53SIlya Dryomov &op->extent.osd_data); 1465bb873b53SIlya Dryomov break; 1466a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 1467a4ed38d7SDouglas Fuller ceph_osdc_msg_data_add(req->r_reply, 1468a4ed38d7SDouglas Fuller &op->list_watchers.response_data); 1469a4ed38d7SDouglas Fuller break; 1470bb873b53SIlya Dryomov 1471bb873b53SIlya Dryomov /* both */ 1472bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 1473bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 1474bb873b53SIlya Dryomov op->cls.method_len + 1475bb873b53SIlya Dryomov op->cls.indata_len); 1476bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_info); 1477bb873b53SIlya Dryomov /* optional, can be NONE */ 1478bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_data); 1479bb873b53SIlya Dryomov /* optional, can be NONE */ 1480bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1481bb873b53SIlya Dryomov &op->cls.response_data); 1482bb873b53SIlya Dryomov break; 148319079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 148419079203SIlya Dryomov ceph_osdc_msg_data_add(msg, 148519079203SIlya Dryomov &op->notify.request_data); 148619079203SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 148719079203SIlya Dryomov &op->notify.response_data); 148819079203SIlya Dryomov break; 1489bb873b53SIlya Dryomov } 1490bb873b53SIlya Dryomov 1491bb873b53SIlya Dryomov data_len += op->indata_len; 1492bb873b53SIlya Dryomov } 1493bb873b53SIlya Dryomov 1494bb873b53SIlya Dryomov WARN_ON(data_len != msg->data_length); 1495bb873b53SIlya Dryomov } 1496bb873b53SIlya Dryomov 14972e59ffd1SIlya Dryomov static void encode_pgid(void **p, const struct ceph_pg *pgid) 14982e59ffd1SIlya Dryomov { 14992e59ffd1SIlya Dryomov ceph_encode_8(p, 1); 15002e59ffd1SIlya Dryomov ceph_encode_64(p, pgid->pool); 15012e59ffd1SIlya Dryomov ceph_encode_32(p, pgid->seed); 15022e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 15032e59ffd1SIlya Dryomov } 15042e59ffd1SIlya Dryomov 15058cb441c0SIlya Dryomov static void encode_spgid(void **p, const struct ceph_spg *spgid) 15068cb441c0SIlya Dryomov { 15078cb441c0SIlya Dryomov ceph_start_encoding(p, 1, 1, CEPH_PGID_ENCODING_LEN + 1); 15088cb441c0SIlya Dryomov encode_pgid(p, &spgid->pgid); 15098cb441c0SIlya Dryomov ceph_encode_8(p, spgid->shard); 15108cb441c0SIlya Dryomov } 15118cb441c0SIlya Dryomov 15122e59ffd1SIlya Dryomov static void encode_oloc(void **p, void *end, 15132e59ffd1SIlya Dryomov const struct ceph_object_locator *oloc) 15142e59ffd1SIlya Dryomov { 15152e59ffd1SIlya Dryomov ceph_start_encoding(p, 5, 4, ceph_oloc_encoding_size(oloc)); 15162e59ffd1SIlya Dryomov ceph_encode_64(p, oloc->pool); 15172e59ffd1SIlya Dryomov ceph_encode_32(p, -1); /* preferred */ 15182e59ffd1SIlya Dryomov ceph_encode_32(p, 0); /* key len */ 15192e59ffd1SIlya Dryomov if (oloc->pool_ns) 15202e59ffd1SIlya Dryomov ceph_encode_string(p, end, oloc->pool_ns->str, 15212e59ffd1SIlya Dryomov oloc->pool_ns->len); 15222e59ffd1SIlya Dryomov else 15232e59ffd1SIlya Dryomov ceph_encode_32(p, 0); 15242e59ffd1SIlya Dryomov } 15252e59ffd1SIlya Dryomov 15268cb441c0SIlya Dryomov static void encode_request_partial(struct ceph_osd_request *req, 15278cb441c0SIlya Dryomov struct ceph_msg *msg) 1528bb873b53SIlya Dryomov { 1529bb873b53SIlya Dryomov void *p = msg->front.iov_base; 1530bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 1531bb873b53SIlya Dryomov u32 data_len = 0; 1532bb873b53SIlya Dryomov int i; 1533bb873b53SIlya Dryomov 1534bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 1535bb873b53SIlya Dryomov /* snapshots aren't writeable */ 1536bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 1537bb873b53SIlya Dryomov } else { 1538bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 1539bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 1540bb873b53SIlya Dryomov } 1541bb873b53SIlya Dryomov 1542bb873b53SIlya Dryomov setup_request_data(req, msg); 1543bb873b53SIlya Dryomov 15448cb441c0SIlya Dryomov encode_spgid(&p, &req->r_t.spgid); /* actual spg */ 15458cb441c0SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); /* raw hash */ 1546bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 1547bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 15488cb441c0SIlya Dryomov 15498cb441c0SIlya Dryomov /* reqid */ 15508cb441c0SIlya Dryomov ceph_start_encoding(&p, 2, 2, sizeof(struct ceph_osd_reqid)); 15518cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_osd_reqid)); 15528cb441c0SIlya Dryomov p += sizeof(struct ceph_osd_reqid); 15538cb441c0SIlya Dryomov 15548cb441c0SIlya Dryomov /* trace */ 15558cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_blkin_trace_info)); 15568cb441c0SIlya Dryomov p += sizeof(struct ceph_blkin_trace_info); 15578cb441c0SIlya Dryomov 15588cb441c0SIlya Dryomov ceph_encode_32(&p, 0); /* client_inc, always 0 */ 1559bb873b53SIlya Dryomov ceph_encode_timespec(p, &req->r_mtime); 1560bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 1561aa26d662SJeff Layton 15622e59ffd1SIlya Dryomov encode_oloc(&p, end, &req->r_t.target_oloc); 15632e59ffd1SIlya Dryomov ceph_encode_string(&p, end, req->r_t.target_oid.name, 15642e59ffd1SIlya Dryomov req->r_t.target_oid.name_len); 1565bb873b53SIlya Dryomov 1566bb873b53SIlya Dryomov /* ops, can imply data */ 1567bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 1568bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1569bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 1570bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 1571bb873b53SIlya Dryomov } 1572bb873b53SIlya Dryomov 1573bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 1574bb873b53SIlya Dryomov if (req->r_snapc) { 1575bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 1576bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 1577bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 1578bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 1579bb873b53SIlya Dryomov } else { 1580bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 1581bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 1582bb873b53SIlya Dryomov } 1583bb873b53SIlya Dryomov 1584bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 15858cb441c0SIlya Dryomov BUG_ON(p != end - 8); /* space for features */ 1586bb873b53SIlya Dryomov 15878cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(8); /* MOSDOp v8 */ 15888cb441c0SIlya Dryomov /* front_len is finalized in encode_request_finish() */ 1589bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 1590bb873b53SIlya Dryomov /* 1591bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 1592bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 1593bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 1594bb873b53SIlya Dryomov */ 1595bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 1596bb873b53SIlya Dryomov 15978cb441c0SIlya Dryomov dout("%s req %p msg %p oid %s oid_len %d\n", __func__, req, msg, 15988cb441c0SIlya Dryomov req->r_t.target_oid.name, req->r_t.target_oid.name_len); 15998cb441c0SIlya Dryomov } 16008cb441c0SIlya Dryomov 16018cb441c0SIlya Dryomov static void encode_request_finish(struct ceph_msg *msg) 16028cb441c0SIlya Dryomov { 16038cb441c0SIlya Dryomov void *p = msg->front.iov_base; 16048cb441c0SIlya Dryomov void *const end = p + msg->front_alloc_len; 16058cb441c0SIlya Dryomov 16068cb441c0SIlya Dryomov if (CEPH_HAVE_FEATURE(msg->con->peer_features, RESEND_ON_SPLIT)) { 16078cb441c0SIlya Dryomov /* luminous OSD -- encode features and be done */ 16088cb441c0SIlya Dryomov p = end - 8; 16098cb441c0SIlya Dryomov ceph_encode_64(&p, msg->con->peer_features); 16108cb441c0SIlya Dryomov } else { 16118cb441c0SIlya Dryomov struct { 16128cb441c0SIlya Dryomov char spgid[CEPH_ENCODING_START_BLK_LEN + 16138cb441c0SIlya Dryomov CEPH_PGID_ENCODING_LEN + 1]; 16148cb441c0SIlya Dryomov __le32 hash; 16158cb441c0SIlya Dryomov __le32 epoch; 16168cb441c0SIlya Dryomov __le32 flags; 16178cb441c0SIlya Dryomov char reqid[CEPH_ENCODING_START_BLK_LEN + 16188cb441c0SIlya Dryomov sizeof(struct ceph_osd_reqid)]; 16198cb441c0SIlya Dryomov char trace[sizeof(struct ceph_blkin_trace_info)]; 16208cb441c0SIlya Dryomov __le32 client_inc; 16218cb441c0SIlya Dryomov struct ceph_timespec mtime; 16228cb441c0SIlya Dryomov } __packed head; 16238cb441c0SIlya Dryomov struct ceph_pg pgid; 16248cb441c0SIlya Dryomov void *oloc, *oid, *tail; 16258cb441c0SIlya Dryomov int oloc_len, oid_len, tail_len; 16268cb441c0SIlya Dryomov int len; 16278cb441c0SIlya Dryomov 16288cb441c0SIlya Dryomov /* 16298cb441c0SIlya Dryomov * Pre-luminous OSD -- reencode v8 into v4 using @head 16308cb441c0SIlya Dryomov * as a temporary buffer. Encode the raw PG; the rest 16318cb441c0SIlya Dryomov * is just a matter of moving oloc, oid and tail blobs 16328cb441c0SIlya Dryomov * around. 16338cb441c0SIlya Dryomov */ 16348cb441c0SIlya Dryomov memcpy(&head, p, sizeof(head)); 16358cb441c0SIlya Dryomov p += sizeof(head); 16368cb441c0SIlya Dryomov 16378cb441c0SIlya Dryomov oloc = p; 16388cb441c0SIlya Dryomov p += CEPH_ENCODING_START_BLK_LEN; 16398cb441c0SIlya Dryomov pgid.pool = ceph_decode_64(&p); 16408cb441c0SIlya Dryomov p += 4 + 4; /* preferred, key len */ 16418cb441c0SIlya Dryomov len = ceph_decode_32(&p); 16428cb441c0SIlya Dryomov p += len; /* nspace */ 16438cb441c0SIlya Dryomov oloc_len = p - oloc; 16448cb441c0SIlya Dryomov 16458cb441c0SIlya Dryomov oid = p; 16468cb441c0SIlya Dryomov len = ceph_decode_32(&p); 16478cb441c0SIlya Dryomov p += len; 16488cb441c0SIlya Dryomov oid_len = p - oid; 16498cb441c0SIlya Dryomov 16508cb441c0SIlya Dryomov tail = p; 16518cb441c0SIlya Dryomov tail_len = (end - p) - 8; 16528cb441c0SIlya Dryomov 16538cb441c0SIlya Dryomov p = msg->front.iov_base; 16548cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.client_inc, sizeof(head.client_inc)); 16558cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.epoch, sizeof(head.epoch)); 16568cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.flags, sizeof(head.flags)); 16578cb441c0SIlya Dryomov ceph_encode_copy(&p, &head.mtime, sizeof(head.mtime)); 16588cb441c0SIlya Dryomov 16598cb441c0SIlya Dryomov /* reassert_version */ 16608cb441c0SIlya Dryomov memset(p, 0, sizeof(struct ceph_eversion)); 16618cb441c0SIlya Dryomov p += sizeof(struct ceph_eversion); 16628cb441c0SIlya Dryomov 16638cb441c0SIlya Dryomov BUG_ON(p >= oloc); 16648cb441c0SIlya Dryomov memmove(p, oloc, oloc_len); 16658cb441c0SIlya Dryomov p += oloc_len; 16668cb441c0SIlya Dryomov 16678cb441c0SIlya Dryomov pgid.seed = le32_to_cpu(head.hash); 16688cb441c0SIlya Dryomov encode_pgid(&p, &pgid); /* raw pg */ 16698cb441c0SIlya Dryomov 16708cb441c0SIlya Dryomov BUG_ON(p >= oid); 16718cb441c0SIlya Dryomov memmove(p, oid, oid_len); 16728cb441c0SIlya Dryomov p += oid_len; 16738cb441c0SIlya Dryomov 16748cb441c0SIlya Dryomov /* tail -- ops, snapid, snapc, retry_attempt */ 16758cb441c0SIlya Dryomov BUG_ON(p >= tail); 16768cb441c0SIlya Dryomov memmove(p, tail, tail_len); 16778cb441c0SIlya Dryomov p += tail_len; 16788cb441c0SIlya Dryomov 16798cb441c0SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 16808cb441c0SIlya Dryomov } 16818cb441c0SIlya Dryomov 16828cb441c0SIlya Dryomov BUG_ON(p > end); 16838cb441c0SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 16848cb441c0SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 16858cb441c0SIlya Dryomov 16868cb441c0SIlya Dryomov dout("%s msg %p tid %llu %u+%u+%u v%d\n", __func__, msg, 16878cb441c0SIlya Dryomov le64_to_cpu(msg->hdr.tid), le32_to_cpu(msg->hdr.front_len), 16888cb441c0SIlya Dryomov le32_to_cpu(msg->hdr.middle_len), le32_to_cpu(msg->hdr.data_len), 16898cb441c0SIlya Dryomov le16_to_cpu(msg->hdr.version)); 1690bb873b53SIlya Dryomov } 1691bb873b53SIlya Dryomov 1692bb873b53SIlya Dryomov /* 1693bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 1694bb873b53SIlya Dryomov */ 1695bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 1696bb873b53SIlya Dryomov { 1697bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 1698bb873b53SIlya Dryomov 16995aea3dcdSIlya Dryomov verify_osd_locked(osd); 1700bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 1701bb873b53SIlya Dryomov 17025aea3dcdSIlya Dryomov /* 17035aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 17045aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 17055aea3dcdSIlya Dryomov */ 17065aea3dcdSIlya Dryomov if (req->r_sent) 17075aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 17085aea3dcdSIlya Dryomov 1709bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 1710bb873b53SIlya Dryomov if (req->r_attempts) 1711bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 1712bb873b53SIlya Dryomov else 1713bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 1714bb873b53SIlya Dryomov 17158cb441c0SIlya Dryomov encode_request_partial(req, req->r_request); 1716bb873b53SIlya Dryomov 1717dc98ff72SIlya Dryomov dout("%s req %p tid %llu to pgid %llu.%x spgid %llu.%xs%d osd%d flags 0x%x attempt %d\n", 1718bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 1719dc98ff72SIlya Dryomov req->r_t.spgid.pgid.pool, req->r_t.spgid.pgid.seed, 1720dc98ff72SIlya Dryomov req->r_t.spgid.shard, osd->o_osd, req->r_flags, req->r_attempts); 1721bb873b53SIlya Dryomov 1722bb873b53SIlya Dryomov req->r_t.paused = false; 17233d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1724bb873b53SIlya Dryomov req->r_attempts++; 17253d14c5d2SYehuda Sadeh 1726bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 1727bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 1728bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 17293d14c5d2SYehuda Sadeh } 17303d14c5d2SYehuda Sadeh 173142c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 173242c1b124SIlya Dryomov { 173342c1b124SIlya Dryomov bool continuous = false; 173442c1b124SIlya Dryomov 17355aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 173642c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 173742c1b124SIlya Dryomov 1738b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 1739b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || 1740b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 174142c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 174242c1b124SIlya Dryomov continuous = true; 174342c1b124SIlya Dryomov } else { 174442c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 174542c1b124SIlya Dryomov } 174642c1b124SIlya Dryomov 174742c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 174842c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 174942c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 175042c1b124SIlya Dryomov } 175142c1b124SIlya Dryomov 1752a1f4020aSJeff Layton static void complete_request(struct ceph_osd_request *req, int err); 17534609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req); 17544609245eSIlya Dryomov 17555aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 17560bbfdfe8SIlya Dryomov { 17575aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 17585aea3dcdSIlya Dryomov struct ceph_osd *osd; 17594609245eSIlya Dryomov enum calc_target_result ct_res; 17605aea3dcdSIlya Dryomov bool need_send = false; 17615aea3dcdSIlya Dryomov bool promoted = false; 1762a1f4020aSJeff Layton bool need_abort = false; 17630bbfdfe8SIlya Dryomov 1764b18b9550SIlya Dryomov WARN_ON(req->r_tid); 17655aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 17665aea3dcdSIlya Dryomov 17675aea3dcdSIlya Dryomov again: 1768dc93e0e2SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, false); 17694609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) 17704609245eSIlya Dryomov goto promote; 17714609245eSIlya Dryomov 17725aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 17735aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 17745aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 17755aea3dcdSIlya Dryomov goto promote; 17765aea3dcdSIlya Dryomov } 17775aea3dcdSIlya Dryomov 177858eb7932SJeff Layton if (osdc->osdmap->epoch < osdc->epoch_barrier) { 177958eb7932SJeff Layton dout("req %p epoch %u barrier %u\n", req, osdc->osdmap->epoch, 178058eb7932SJeff Layton osdc->epoch_barrier); 178158eb7932SJeff Layton req->r_t.paused = true; 178258eb7932SJeff Layton maybe_request_map(osdc); 178358eb7932SJeff Layton } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 1784b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 17855aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 17865aea3dcdSIlya Dryomov req->r_t.paused = true; 17875aea3dcdSIlya Dryomov maybe_request_map(osdc); 17885aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 1789b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 17905aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 17915aea3dcdSIlya Dryomov req->r_t.paused = true; 17925aea3dcdSIlya Dryomov maybe_request_map(osdc); 17935aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 17945aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 17955aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 1796b7ec35b3SIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 17975aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 17985aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 17995aea3dcdSIlya Dryomov pr_warn_ratelimited("FULL or reached pool quota\n"); 18005aea3dcdSIlya Dryomov req->r_t.paused = true; 18015aea3dcdSIlya Dryomov maybe_request_map(osdc); 1802a1f4020aSJeff Layton if (req->r_abort_on_full) 1803a1f4020aSJeff Layton need_abort = true; 18045aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 18055aea3dcdSIlya Dryomov need_send = true; 18060bbfdfe8SIlya Dryomov } else { 18075aea3dcdSIlya Dryomov maybe_request_map(osdc); 18080bbfdfe8SIlya Dryomov } 18090bbfdfe8SIlya Dryomov 18105aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 18115aea3dcdSIlya Dryomov /* 18125aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 18135aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 18145aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 18155aea3dcdSIlya Dryomov */ 18165aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 18175aea3dcdSIlya Dryomov link_request(osd, req); 18185aea3dcdSIlya Dryomov if (need_send) 18195aea3dcdSIlya Dryomov send_request(req); 1820a1f4020aSJeff Layton else if (need_abort) 1821a1f4020aSJeff Layton complete_request(req, -ENOSPC); 18225aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 18235aea3dcdSIlya Dryomov 18244609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) 18254609245eSIlya Dryomov send_map_check(req); 18264609245eSIlya Dryomov 18275aea3dcdSIlya Dryomov if (promoted) 18285aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 18295aea3dcdSIlya Dryomov return; 18305aea3dcdSIlya Dryomov 18315aea3dcdSIlya Dryomov promote: 18325aea3dcdSIlya Dryomov up_read(&osdc->lock); 18335aea3dcdSIlya Dryomov down_write(&osdc->lock); 18345aea3dcdSIlya Dryomov wrlocked = true; 18355aea3dcdSIlya Dryomov promoted = true; 18365aea3dcdSIlya Dryomov goto again; 18370bbfdfe8SIlya Dryomov } 18380bbfdfe8SIlya Dryomov 18395aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 18405aea3dcdSIlya Dryomov { 184154ea0046SIlya Dryomov WARN_ON(req->r_flags & (CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK)); 1842b18b9550SIlya Dryomov WARN_ON(!(req->r_flags & (CEPH_OSD_FLAG_READ | CEPH_OSD_FLAG_WRITE))); 18435aea3dcdSIlya Dryomov 1844b18b9550SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ONDISK; 18455aea3dcdSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 18467cc5e38fSIlya Dryomov 18477cc5e38fSIlya Dryomov req->r_start_stamp = jiffies; 18485aea3dcdSIlya Dryomov } 18495aea3dcdSIlya Dryomov 18505aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 18515aea3dcdSIlya Dryomov { 18525aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 18535aea3dcdSIlya Dryomov account_request(req); 18545aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 18555aea3dcdSIlya Dryomov } 18565aea3dcdSIlya Dryomov 185745ee2c1dSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 18585aea3dcdSIlya Dryomov { 18595aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 18605aea3dcdSIlya Dryomov struct ceph_osd *osd = req->r_osd; 18615aea3dcdSIlya Dryomov 18625aea3dcdSIlya Dryomov verify_osd_locked(osd); 18635aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 18645aea3dcdSIlya Dryomov 18654609245eSIlya Dryomov WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); 18665aea3dcdSIlya Dryomov unlink_request(osd, req); 18675aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 18685aea3dcdSIlya Dryomov 18695aea3dcdSIlya Dryomov /* 18705aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 18715aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 18725aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 18735aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 18745aea3dcdSIlya Dryomov */ 18755aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 18765aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 18775aea3dcdSIlya Dryomov } 18785aea3dcdSIlya Dryomov 1879fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 1880fe5da05eSIlya Dryomov { 1881b18b9550SIlya Dryomov if (req->r_callback) { 1882b18b9550SIlya Dryomov dout("%s req %p tid %llu cb %pf result %d\n", __func__, req, 1883b18b9550SIlya Dryomov req->r_tid, req->r_callback, req->r_result); 1884fe5da05eSIlya Dryomov req->r_callback(req); 1885b18b9550SIlya Dryomov } 1886fe5da05eSIlya Dryomov } 1887fe5da05eSIlya Dryomov 18884609245eSIlya Dryomov /* 1889b18b9550SIlya Dryomov * This is open-coded in handle_reply(). 18904609245eSIlya Dryomov */ 18914609245eSIlya Dryomov static void complete_request(struct ceph_osd_request *req, int err) 18924609245eSIlya Dryomov { 18934609245eSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 18944609245eSIlya Dryomov 18954609245eSIlya Dryomov req->r_result = err; 189645ee2c1dSIlya Dryomov finish_request(req); 18974609245eSIlya Dryomov __complete_request(req); 1898b18b9550SIlya Dryomov complete_all(&req->r_completion); 18994609245eSIlya Dryomov ceph_osdc_put_request(req); 19004609245eSIlya Dryomov } 19014609245eSIlya Dryomov 19024609245eSIlya Dryomov static void cancel_map_check(struct ceph_osd_request *req) 19034609245eSIlya Dryomov { 19044609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 19054609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 19064609245eSIlya Dryomov 19074609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 19084609245eSIlya Dryomov 19094609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 19104609245eSIlya Dryomov if (!lookup_req) 19114609245eSIlya Dryomov return; 19124609245eSIlya Dryomov 19134609245eSIlya Dryomov WARN_ON(lookup_req != req); 19144609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 19154609245eSIlya Dryomov ceph_osdc_put_request(req); 19164609245eSIlya Dryomov } 19174609245eSIlya Dryomov 19185aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 19195aea3dcdSIlya Dryomov { 19205aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 19215aea3dcdSIlya Dryomov 19224609245eSIlya Dryomov cancel_map_check(req); 192345ee2c1dSIlya Dryomov finish_request(req); 1924b18b9550SIlya Dryomov complete_all(&req->r_completion); 1925c297eb42SIlya Dryomov ceph_osdc_put_request(req); 19265aea3dcdSIlya Dryomov } 19275aea3dcdSIlya Dryomov 19287cc5e38fSIlya Dryomov static void abort_request(struct ceph_osd_request *req, int err) 19297cc5e38fSIlya Dryomov { 19307cc5e38fSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 19317cc5e38fSIlya Dryomov 19327cc5e38fSIlya Dryomov cancel_map_check(req); 19337cc5e38fSIlya Dryomov complete_request(req, err); 19347cc5e38fSIlya Dryomov } 19357cc5e38fSIlya Dryomov 193658eb7932SJeff Layton static void update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 193758eb7932SJeff Layton { 193858eb7932SJeff Layton if (likely(eb > osdc->epoch_barrier)) { 193958eb7932SJeff Layton dout("updating epoch_barrier from %u to %u\n", 194058eb7932SJeff Layton osdc->epoch_barrier, eb); 194158eb7932SJeff Layton osdc->epoch_barrier = eb; 194258eb7932SJeff Layton /* Request map if we're not to the barrier yet */ 194358eb7932SJeff Layton if (eb > osdc->osdmap->epoch) 194458eb7932SJeff Layton maybe_request_map(osdc); 194558eb7932SJeff Layton } 194658eb7932SJeff Layton } 194758eb7932SJeff Layton 194858eb7932SJeff Layton void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb) 194958eb7932SJeff Layton { 195058eb7932SJeff Layton down_read(&osdc->lock); 195158eb7932SJeff Layton if (unlikely(eb > osdc->epoch_barrier)) { 195258eb7932SJeff Layton up_read(&osdc->lock); 195358eb7932SJeff Layton down_write(&osdc->lock); 195458eb7932SJeff Layton update_epoch_barrier(osdc, eb); 195558eb7932SJeff Layton up_write(&osdc->lock); 195658eb7932SJeff Layton } else { 195758eb7932SJeff Layton up_read(&osdc->lock); 195858eb7932SJeff Layton } 195958eb7932SJeff Layton } 196058eb7932SJeff Layton EXPORT_SYMBOL(ceph_osdc_update_epoch_barrier); 196158eb7932SJeff Layton 1962fc36d0a4SJeff Layton /* 1963fc36d0a4SJeff Layton * Drop all pending requests that are stalled waiting on a full condition to 196458eb7932SJeff Layton * clear, and complete them with ENOSPC as the return code. Set the 196558eb7932SJeff Layton * osdc->epoch_barrier to the latest map epoch that we've seen if any were 196658eb7932SJeff Layton * cancelled. 1967fc36d0a4SJeff Layton */ 1968fc36d0a4SJeff Layton static void ceph_osdc_abort_on_full(struct ceph_osd_client *osdc) 1969fc36d0a4SJeff Layton { 1970fc36d0a4SJeff Layton struct rb_node *n; 197158eb7932SJeff Layton bool victims = false; 1972fc36d0a4SJeff Layton 1973fc36d0a4SJeff Layton dout("enter abort_on_full\n"); 1974fc36d0a4SJeff Layton 1975fc36d0a4SJeff Layton if (!ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) && !have_pool_full(osdc)) 1976fc36d0a4SJeff Layton goto out; 1977fc36d0a4SJeff Layton 197858eb7932SJeff Layton /* Scan list and see if there is anything to abort */ 197958eb7932SJeff Layton for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 198058eb7932SJeff Layton struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 198158eb7932SJeff Layton struct rb_node *m; 198258eb7932SJeff Layton 198358eb7932SJeff Layton m = rb_first(&osd->o_requests); 198458eb7932SJeff Layton while (m) { 198558eb7932SJeff Layton struct ceph_osd_request *req = rb_entry(m, 198658eb7932SJeff Layton struct ceph_osd_request, r_node); 198758eb7932SJeff Layton m = rb_next(m); 198858eb7932SJeff Layton 198958eb7932SJeff Layton if (req->r_abort_on_full) { 199058eb7932SJeff Layton victims = true; 199158eb7932SJeff Layton break; 199258eb7932SJeff Layton } 199358eb7932SJeff Layton } 199458eb7932SJeff Layton if (victims) 199558eb7932SJeff Layton break; 199658eb7932SJeff Layton } 199758eb7932SJeff Layton 199858eb7932SJeff Layton if (!victims) 199958eb7932SJeff Layton goto out; 200058eb7932SJeff Layton 200158eb7932SJeff Layton /* 200258eb7932SJeff Layton * Update the barrier to current epoch if it's behind that point, 200358eb7932SJeff Layton * since we know we have some calls to be aborted in the tree. 200458eb7932SJeff Layton */ 200558eb7932SJeff Layton update_epoch_barrier(osdc, osdc->osdmap->epoch); 200658eb7932SJeff Layton 2007fc36d0a4SJeff Layton for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 2008fc36d0a4SJeff Layton struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 2009fc36d0a4SJeff Layton struct rb_node *m; 2010fc36d0a4SJeff Layton 2011fc36d0a4SJeff Layton m = rb_first(&osd->o_requests); 2012fc36d0a4SJeff Layton while (m) { 2013fc36d0a4SJeff Layton struct ceph_osd_request *req = rb_entry(m, 2014fc36d0a4SJeff Layton struct ceph_osd_request, r_node); 2015fc36d0a4SJeff Layton m = rb_next(m); 2016fc36d0a4SJeff Layton 2017fc36d0a4SJeff Layton if (req->r_abort_on_full && 2018fc36d0a4SJeff Layton (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 2019fc36d0a4SJeff Layton pool_full(osdc, req->r_t.target_oloc.pool))) 2020fc36d0a4SJeff Layton abort_request(req, -ENOSPC); 2021fc36d0a4SJeff Layton } 2022fc36d0a4SJeff Layton } 2023fc36d0a4SJeff Layton out: 202458eb7932SJeff Layton dout("return abort_on_full barrier=%u\n", osdc->epoch_barrier); 2025fc36d0a4SJeff Layton } 2026fc36d0a4SJeff Layton 20274609245eSIlya Dryomov static void check_pool_dne(struct ceph_osd_request *req) 20284609245eSIlya Dryomov { 20294609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 20304609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 20314609245eSIlya Dryomov 20324609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 20334609245eSIlya Dryomov WARN_ON(!map->epoch); 20344609245eSIlya Dryomov 20354609245eSIlya Dryomov if (req->r_attempts) { 20364609245eSIlya Dryomov /* 20374609245eSIlya Dryomov * We sent a request earlier, which means that 20384609245eSIlya Dryomov * previously the pool existed, and now it does not 20394609245eSIlya Dryomov * (i.e., it was deleted). 20404609245eSIlya Dryomov */ 20414609245eSIlya Dryomov req->r_map_dne_bound = map->epoch; 20424609245eSIlya Dryomov dout("%s req %p tid %llu pool disappeared\n", __func__, req, 20434609245eSIlya Dryomov req->r_tid); 20444609245eSIlya Dryomov } else { 20454609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, 20464609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, map->epoch); 20474609245eSIlya Dryomov } 20484609245eSIlya Dryomov 20494609245eSIlya Dryomov if (req->r_map_dne_bound) { 20504609245eSIlya Dryomov if (map->epoch >= req->r_map_dne_bound) { 20514609245eSIlya Dryomov /* we had a new enough map */ 20524609245eSIlya Dryomov pr_info_ratelimited("tid %llu pool does not exist\n", 20534609245eSIlya Dryomov req->r_tid); 20544609245eSIlya Dryomov complete_request(req, -ENOENT); 20554609245eSIlya Dryomov } 20564609245eSIlya Dryomov } else { 20574609245eSIlya Dryomov send_map_check(req); 20584609245eSIlya Dryomov } 20594609245eSIlya Dryomov } 20604609245eSIlya Dryomov 20614609245eSIlya Dryomov static void map_check_cb(struct ceph_mon_generic_request *greq) 20624609245eSIlya Dryomov { 20634609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 20644609245eSIlya Dryomov struct ceph_osd_request *req; 20654609245eSIlya Dryomov u64 tid = greq->private_data; 20664609245eSIlya Dryomov 20674609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 20684609245eSIlya Dryomov 20694609245eSIlya Dryomov down_write(&osdc->lock); 20704609245eSIlya Dryomov req = lookup_request_mc(&osdc->map_checks, tid); 20714609245eSIlya Dryomov if (!req) { 20724609245eSIlya Dryomov dout("%s tid %llu dne\n", __func__, tid); 20734609245eSIlya Dryomov goto out_unlock; 20744609245eSIlya Dryomov } 20754609245eSIlya Dryomov 20764609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, 20774609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, greq->u.newest); 20784609245eSIlya Dryomov if (!req->r_map_dne_bound) 20794609245eSIlya Dryomov req->r_map_dne_bound = greq->u.newest; 20804609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 20814609245eSIlya Dryomov check_pool_dne(req); 20824609245eSIlya Dryomov 20834609245eSIlya Dryomov ceph_osdc_put_request(req); 20844609245eSIlya Dryomov out_unlock: 20854609245eSIlya Dryomov up_write(&osdc->lock); 20864609245eSIlya Dryomov } 20874609245eSIlya Dryomov 20884609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req) 20894609245eSIlya Dryomov { 20904609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 20914609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 20924609245eSIlya Dryomov int ret; 20934609245eSIlya Dryomov 20944609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 20954609245eSIlya Dryomov 20964609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 20974609245eSIlya Dryomov if (lookup_req) { 20984609245eSIlya Dryomov WARN_ON(lookup_req != req); 20994609245eSIlya Dryomov return; 21004609245eSIlya Dryomov } 21014609245eSIlya Dryomov 21024609245eSIlya Dryomov ceph_osdc_get_request(req); 21034609245eSIlya Dryomov insert_request_mc(&osdc->map_checks, req); 21044609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 21054609245eSIlya Dryomov map_check_cb, req->r_tid); 21064609245eSIlya Dryomov WARN_ON(ret); 21074609245eSIlya Dryomov } 21084609245eSIlya Dryomov 21090bbfdfe8SIlya Dryomov /* 2110922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 2111922dab61SIlya Dryomov */ 2112922dab61SIlya Dryomov static void linger_release(struct kref *kref) 2113922dab61SIlya Dryomov { 2114922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2115922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 2116922dab61SIlya Dryomov 2117922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 2118922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 2119922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 2120922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 21214609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); 2122922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 2123b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lreq->pending_lworks)); 2124922dab61SIlya Dryomov WARN_ON(lreq->osd); 2125922dab61SIlya Dryomov 2126922dab61SIlya Dryomov if (lreq->reg_req) 2127922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 2128922dab61SIlya Dryomov if (lreq->ping_req) 2129922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 2130922dab61SIlya Dryomov target_destroy(&lreq->t); 2131922dab61SIlya Dryomov kfree(lreq); 2132922dab61SIlya Dryomov } 2133922dab61SIlya Dryomov 2134922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 2135922dab61SIlya Dryomov { 2136922dab61SIlya Dryomov if (lreq) 2137922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 2138922dab61SIlya Dryomov } 2139922dab61SIlya Dryomov 2140922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2141922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 2142922dab61SIlya Dryomov { 2143922dab61SIlya Dryomov kref_get(&lreq->kref); 2144922dab61SIlya Dryomov return lreq; 2145922dab61SIlya Dryomov } 2146922dab61SIlya Dryomov 2147922dab61SIlya Dryomov static struct ceph_osd_linger_request * 2148922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 2149922dab61SIlya Dryomov { 2150922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2151922dab61SIlya Dryomov 2152922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 2153922dab61SIlya Dryomov if (!lreq) 2154922dab61SIlya Dryomov return NULL; 2155922dab61SIlya Dryomov 2156922dab61SIlya Dryomov kref_init(&lreq->kref); 2157922dab61SIlya Dryomov mutex_init(&lreq->lock); 2158922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 2159922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 21604609245eSIlya Dryomov RB_CLEAR_NODE(&lreq->mc_node); 2161922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 2162b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lreq->pending_lworks); 2163922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 216419079203SIlya Dryomov init_completion(&lreq->notify_finish_wait); 2165922dab61SIlya Dryomov 2166922dab61SIlya Dryomov lreq->osdc = osdc; 2167922dab61SIlya Dryomov target_init(&lreq->t); 2168922dab61SIlya Dryomov 2169922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 2170922dab61SIlya Dryomov return lreq; 2171922dab61SIlya Dryomov } 2172922dab61SIlya Dryomov 2173922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 2174922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 21754609245eSIlya Dryomov DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) 2176922dab61SIlya Dryomov 2177922dab61SIlya Dryomov /* 2178922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 2179922dab61SIlya Dryomov * 2180922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 2181922dab61SIlya Dryomov */ 2182922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 2183922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2184922dab61SIlya Dryomov { 2185922dab61SIlya Dryomov verify_osd_locked(osd); 2186922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 2187922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2188922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2189922dab61SIlya Dryomov 2190922dab61SIlya Dryomov if (!osd_homeless(osd)) 2191922dab61SIlya Dryomov __remove_osd_from_lru(osd); 2192922dab61SIlya Dryomov else 2193922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 2194922dab61SIlya Dryomov 2195922dab61SIlya Dryomov get_osd(osd); 2196922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 2197922dab61SIlya Dryomov lreq->osd = osd; 2198922dab61SIlya Dryomov } 2199922dab61SIlya Dryomov 2200922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 2201922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 2202922dab61SIlya Dryomov { 2203922dab61SIlya Dryomov verify_osd_locked(osd); 2204922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 2205922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 2206922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 2207922dab61SIlya Dryomov 2208922dab61SIlya Dryomov lreq->osd = NULL; 2209922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 2210922dab61SIlya Dryomov put_osd(osd); 2211922dab61SIlya Dryomov 2212922dab61SIlya Dryomov if (!osd_homeless(osd)) 2213922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 2214922dab61SIlya Dryomov else 2215922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 2216922dab61SIlya Dryomov } 2217922dab61SIlya Dryomov 2218922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 2219922dab61SIlya Dryomov { 2220922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 2221922dab61SIlya Dryomov 2222922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 2223922dab61SIlya Dryomov } 2224922dab61SIlya Dryomov 2225922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 2226922dab61SIlya Dryomov { 2227922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2228922dab61SIlya Dryomov bool registered; 2229922dab61SIlya Dryomov 2230922dab61SIlya Dryomov down_read(&osdc->lock); 2231922dab61SIlya Dryomov registered = __linger_registered(lreq); 2232922dab61SIlya Dryomov up_read(&osdc->lock); 2233922dab61SIlya Dryomov 2234922dab61SIlya Dryomov return registered; 2235922dab61SIlya Dryomov } 2236922dab61SIlya Dryomov 2237922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 2238922dab61SIlya Dryomov { 2239922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2240922dab61SIlya Dryomov 2241922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2242922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 2243922dab61SIlya Dryomov 2244922dab61SIlya Dryomov linger_get(lreq); 2245922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 2246922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 2247922dab61SIlya Dryomov } 2248922dab61SIlya Dryomov 2249922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 2250922dab61SIlya Dryomov { 2251922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2252922dab61SIlya Dryomov 2253922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2254922dab61SIlya Dryomov 2255922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 2256922dab61SIlya Dryomov linger_put(lreq); 2257922dab61SIlya Dryomov } 2258922dab61SIlya Dryomov 2259922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 2260922dab61SIlya Dryomov { 2261922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2262922dab61SIlya Dryomov 2263922dab61SIlya Dryomov WARN_ON(!req->r_linger); 2264922dab61SIlya Dryomov cancel_request(req); 2265922dab61SIlya Dryomov linger_put(lreq); 2266922dab61SIlya Dryomov } 2267922dab61SIlya Dryomov 2268922dab61SIlya Dryomov struct linger_work { 2269922dab61SIlya Dryomov struct work_struct work; 2270922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2271b07d3c4bSIlya Dryomov struct list_head pending_item; 2272b07d3c4bSIlya Dryomov unsigned long queued_stamp; 2273922dab61SIlya Dryomov 2274922dab61SIlya Dryomov union { 2275922dab61SIlya Dryomov struct { 2276922dab61SIlya Dryomov u64 notify_id; 2277922dab61SIlya Dryomov u64 notifier_id; 2278922dab61SIlya Dryomov void *payload; /* points into @msg front */ 2279922dab61SIlya Dryomov size_t payload_len; 2280922dab61SIlya Dryomov 2281922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 2282922dab61SIlya Dryomov } notify; 2283922dab61SIlya Dryomov struct { 2284922dab61SIlya Dryomov int err; 2285922dab61SIlya Dryomov } error; 2286922dab61SIlya Dryomov }; 2287922dab61SIlya Dryomov }; 2288922dab61SIlya Dryomov 2289922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 2290922dab61SIlya Dryomov work_func_t workfn) 2291922dab61SIlya Dryomov { 2292922dab61SIlya Dryomov struct linger_work *lwork; 2293922dab61SIlya Dryomov 2294922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 2295922dab61SIlya Dryomov if (!lwork) 2296922dab61SIlya Dryomov return NULL; 2297922dab61SIlya Dryomov 2298922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 2299b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lwork->pending_item); 2300922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 2301922dab61SIlya Dryomov 2302922dab61SIlya Dryomov return lwork; 2303922dab61SIlya Dryomov } 2304922dab61SIlya Dryomov 2305922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 2306922dab61SIlya Dryomov { 2307922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2308922dab61SIlya Dryomov 2309b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 2310b07d3c4bSIlya Dryomov list_del(&lwork->pending_item); 2311b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 2312b07d3c4bSIlya Dryomov 2313922dab61SIlya Dryomov linger_put(lreq); 2314922dab61SIlya Dryomov kfree(lwork); 2315922dab61SIlya Dryomov } 2316922dab61SIlya Dryomov 2317922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 2318922dab61SIlya Dryomov { 2319922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2320922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2321922dab61SIlya Dryomov 2322922dab61SIlya Dryomov verify_lreq_locked(lreq); 2323b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lwork->pending_item)); 2324b07d3c4bSIlya Dryomov 2325b07d3c4bSIlya Dryomov lwork->queued_stamp = jiffies; 2326b07d3c4bSIlya Dryomov list_add_tail(&lwork->pending_item, &lreq->pending_lworks); 2327922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 2328922dab61SIlya Dryomov } 2329922dab61SIlya Dryomov 2330922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 2331922dab61SIlya Dryomov { 2332922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2333922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2334922dab61SIlya Dryomov 2335922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2336922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2337922dab61SIlya Dryomov goto out; 2338922dab61SIlya Dryomov } 2339922dab61SIlya Dryomov 234019079203SIlya Dryomov WARN_ON(!lreq->is_watch); 2341922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 2342922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 2343922dab61SIlya Dryomov lwork->notify.payload_len); 2344922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 2345922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 2346922dab61SIlya Dryomov lwork->notify.payload_len); 2347922dab61SIlya Dryomov 2348922dab61SIlya Dryomov out: 2349922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 2350922dab61SIlya Dryomov lwork_free(lwork); 2351922dab61SIlya Dryomov } 2352922dab61SIlya Dryomov 2353922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 2354922dab61SIlya Dryomov { 2355922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2356922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2357922dab61SIlya Dryomov 2358922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2359922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2360922dab61SIlya Dryomov goto out; 2361922dab61SIlya Dryomov } 2362922dab61SIlya Dryomov 2363922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 2364922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 2365922dab61SIlya Dryomov 2366922dab61SIlya Dryomov out: 2367922dab61SIlya Dryomov lwork_free(lwork); 2368922dab61SIlya Dryomov } 2369922dab61SIlya Dryomov 2370922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 2371922dab61SIlya Dryomov { 2372922dab61SIlya Dryomov struct linger_work *lwork; 2373922dab61SIlya Dryomov 2374922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 2375922dab61SIlya Dryomov if (!lwork) { 2376922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 2377922dab61SIlya Dryomov return; 2378922dab61SIlya Dryomov } 2379922dab61SIlya Dryomov 2380922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 2381922dab61SIlya Dryomov lwork_queue(lwork); 2382922dab61SIlya Dryomov } 2383922dab61SIlya Dryomov 2384922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 2385922dab61SIlya Dryomov int result) 2386922dab61SIlya Dryomov { 2387922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 2388922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 2389922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 2390922dab61SIlya Dryomov } 2391922dab61SIlya Dryomov } 2392922dab61SIlya Dryomov 2393922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 2394922dab61SIlya Dryomov { 2395922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2396922dab61SIlya Dryomov 2397922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2398922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 2399922dab61SIlya Dryomov lreq->linger_id, req->r_result); 2400922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 2401922dab61SIlya Dryomov lreq->committed = true; 2402922dab61SIlya Dryomov 240319079203SIlya Dryomov if (!lreq->is_watch) { 240419079203SIlya Dryomov struct ceph_osd_data *osd_data = 240519079203SIlya Dryomov osd_req_op_data(req, 0, notify, response_data); 240619079203SIlya Dryomov void *p = page_address(osd_data->pages[0]); 240719079203SIlya Dryomov 240819079203SIlya Dryomov WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || 240919079203SIlya Dryomov osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); 241019079203SIlya Dryomov 241119079203SIlya Dryomov /* make note of the notify_id */ 241219079203SIlya Dryomov if (req->r_ops[0].outdata_len >= sizeof(u64)) { 241319079203SIlya Dryomov lreq->notify_id = ceph_decode_64(&p); 241419079203SIlya Dryomov dout("lreq %p notify_id %llu\n", lreq, 241519079203SIlya Dryomov lreq->notify_id); 241619079203SIlya Dryomov } else { 241719079203SIlya Dryomov dout("lreq %p no notify_id\n", lreq); 241819079203SIlya Dryomov } 241919079203SIlya Dryomov } 242019079203SIlya Dryomov 2421922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2422922dab61SIlya Dryomov linger_put(lreq); 2423922dab61SIlya Dryomov } 2424922dab61SIlya Dryomov 2425922dab61SIlya Dryomov static int normalize_watch_error(int err) 2426922dab61SIlya Dryomov { 2427922dab61SIlya Dryomov /* 2428922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 2429922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 2430922dab61SIlya Dryomov * the delete appear the same to the user. 2431922dab61SIlya Dryomov */ 2432922dab61SIlya Dryomov if (err == -ENOENT) 2433922dab61SIlya Dryomov err = -ENOTCONN; 2434922dab61SIlya Dryomov 2435922dab61SIlya Dryomov return err; 2436922dab61SIlya Dryomov } 2437922dab61SIlya Dryomov 2438922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 2439922dab61SIlya Dryomov { 2440922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2441922dab61SIlya Dryomov 2442922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2443922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 2444922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 2445922dab61SIlya Dryomov if (req->r_result < 0) { 2446922dab61SIlya Dryomov if (!lreq->last_error) { 2447922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2448922dab61SIlya Dryomov queue_watch_error(lreq); 2449922dab61SIlya Dryomov } 2450922dab61SIlya Dryomov } 2451922dab61SIlya Dryomov 2452922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2453922dab61SIlya Dryomov linger_put(lreq); 2454922dab61SIlya Dryomov } 2455922dab61SIlya Dryomov 2456922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 2457922dab61SIlya Dryomov { 2458922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->reg_req; 2459922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2460922dab61SIlya Dryomov 2461922dab61SIlya Dryomov verify_osdc_wrlocked(req->r_osdc); 2462922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2463922dab61SIlya Dryomov 2464922dab61SIlya Dryomov if (req->r_osd) 2465922dab61SIlya Dryomov cancel_linger_request(req); 2466922dab61SIlya Dryomov 2467922dab61SIlya Dryomov request_reinit(req); 2468922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 2469922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 2470922dab61SIlya Dryomov req->r_flags = lreq->t.flags; 2471922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 2472922dab61SIlya Dryomov 2473922dab61SIlya Dryomov mutex_lock(&lreq->lock); 247419079203SIlya Dryomov if (lreq->is_watch && lreq->committed) { 2475922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2476922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id); 2477922dab61SIlya Dryomov op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; 2478922dab61SIlya Dryomov op->watch.gen = ++lreq->register_gen; 2479922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 2480922dab61SIlya Dryomov op->watch.gen); 2481922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 2482922dab61SIlya Dryomov } else { 248319079203SIlya Dryomov if (!lreq->is_watch) 248419079203SIlya Dryomov lreq->notify_id = 0; 248519079203SIlya Dryomov else 2486922dab61SIlya Dryomov WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); 2487922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 2488922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 2489922dab61SIlya Dryomov } 2490922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2491922dab61SIlya Dryomov 2492922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2493922dab61SIlya Dryomov req->r_linger = true; 2494922dab61SIlya Dryomov 2495922dab61SIlya Dryomov submit_request(req, true); 2496922dab61SIlya Dryomov } 2497922dab61SIlya Dryomov 2498922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 2499922dab61SIlya Dryomov { 2500922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2501922dab61SIlya Dryomov 2502922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2503922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 2504922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 2505922dab61SIlya Dryomov lreq->last_error); 2506922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 2507b07d3c4bSIlya Dryomov if (!req->r_result) { 2508b07d3c4bSIlya Dryomov lreq->watch_valid_thru = lreq->ping_sent; 2509b07d3c4bSIlya Dryomov } else if (!lreq->last_error) { 2510922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2511922dab61SIlya Dryomov queue_watch_error(lreq); 2512922dab61SIlya Dryomov } 2513922dab61SIlya Dryomov } else { 2514922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 2515922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 2516922dab61SIlya Dryomov } 2517922dab61SIlya Dryomov 2518922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2519922dab61SIlya Dryomov linger_put(lreq); 2520922dab61SIlya Dryomov } 2521922dab61SIlya Dryomov 2522922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 2523922dab61SIlya Dryomov { 2524922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2525922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->ping_req; 2526922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2527922dab61SIlya Dryomov 2528b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 2529922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 2530922dab61SIlya Dryomov return; 2531922dab61SIlya Dryomov } 2532922dab61SIlya Dryomov 2533922dab61SIlya Dryomov lreq->ping_sent = jiffies; 2534922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 2535922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 2536922dab61SIlya Dryomov lreq->register_gen); 2537922dab61SIlya Dryomov 2538922dab61SIlya Dryomov if (req->r_osd) 2539922dab61SIlya Dryomov cancel_linger_request(req); 2540922dab61SIlya Dryomov 2541922dab61SIlya Dryomov request_reinit(req); 2542922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 2543922dab61SIlya Dryomov 2544922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2545922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id || 2546922dab61SIlya Dryomov op->watch.op != CEPH_OSD_WATCH_OP_PING); 2547922dab61SIlya Dryomov op->watch.gen = lreq->register_gen; 2548922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 2549922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2550922dab61SIlya Dryomov req->r_linger = true; 2551922dab61SIlya Dryomov 2552922dab61SIlya Dryomov ceph_osdc_get_request(req); 2553922dab61SIlya Dryomov account_request(req); 2554922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 2555922dab61SIlya Dryomov link_request(lreq->osd, req); 2556922dab61SIlya Dryomov send_request(req); 2557922dab61SIlya Dryomov } 2558922dab61SIlya Dryomov 2559922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 2560922dab61SIlya Dryomov { 2561922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2562922dab61SIlya Dryomov struct ceph_osd *osd; 2563922dab61SIlya Dryomov 2564dc93e0e2SIlya Dryomov calc_target(osdc, &lreq->t, false); 2565922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 2566922dab61SIlya Dryomov link_linger(osd, lreq); 2567922dab61SIlya Dryomov 2568922dab61SIlya Dryomov send_linger(lreq); 2569922dab61SIlya Dryomov } 2570922dab61SIlya Dryomov 25714609245eSIlya Dryomov static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) 25724609245eSIlya Dryomov { 25734609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 25744609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 25754609245eSIlya Dryomov 25764609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 25774609245eSIlya Dryomov 25784609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 25794609245eSIlya Dryomov lreq->linger_id); 25804609245eSIlya Dryomov if (!lookup_lreq) 25814609245eSIlya Dryomov return; 25824609245eSIlya Dryomov 25834609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 25844609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 25854609245eSIlya Dryomov linger_put(lreq); 25864609245eSIlya Dryomov } 25874609245eSIlya Dryomov 2588922dab61SIlya Dryomov /* 2589922dab61SIlya Dryomov * @lreq has to be both registered and linked. 2590922dab61SIlya Dryomov */ 2591922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 2592922dab61SIlya Dryomov { 259319079203SIlya Dryomov if (lreq->is_watch && lreq->ping_req->r_osd) 2594922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 2595922dab61SIlya Dryomov if (lreq->reg_req->r_osd) 2596922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 25974609245eSIlya Dryomov cancel_linger_map_check(lreq); 2598922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 2599922dab61SIlya Dryomov linger_unregister(lreq); 2600922dab61SIlya Dryomov } 2601922dab61SIlya Dryomov 2602922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 2603922dab61SIlya Dryomov { 2604922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2605922dab61SIlya Dryomov 2606922dab61SIlya Dryomov down_write(&osdc->lock); 2607922dab61SIlya Dryomov if (__linger_registered(lreq)) 2608922dab61SIlya Dryomov __linger_cancel(lreq); 2609922dab61SIlya Dryomov up_write(&osdc->lock); 2610922dab61SIlya Dryomov } 2611922dab61SIlya Dryomov 26124609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq); 26134609245eSIlya Dryomov 26144609245eSIlya Dryomov static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) 26154609245eSIlya Dryomov { 26164609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 26174609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 26184609245eSIlya Dryomov 26194609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 26204609245eSIlya Dryomov WARN_ON(!map->epoch); 26214609245eSIlya Dryomov 26224609245eSIlya Dryomov if (lreq->register_gen) { 26234609245eSIlya Dryomov lreq->map_dne_bound = map->epoch; 26244609245eSIlya Dryomov dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, 26254609245eSIlya Dryomov lreq, lreq->linger_id); 26264609245eSIlya Dryomov } else { 26274609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", 26284609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 26294609245eSIlya Dryomov map->epoch); 26304609245eSIlya Dryomov } 26314609245eSIlya Dryomov 26324609245eSIlya Dryomov if (lreq->map_dne_bound) { 26334609245eSIlya Dryomov if (map->epoch >= lreq->map_dne_bound) { 26344609245eSIlya Dryomov /* we had a new enough map */ 26354609245eSIlya Dryomov pr_info("linger_id %llu pool does not exist\n", 26364609245eSIlya Dryomov lreq->linger_id); 26374609245eSIlya Dryomov linger_reg_commit_complete(lreq, -ENOENT); 26384609245eSIlya Dryomov __linger_cancel(lreq); 26394609245eSIlya Dryomov } 26404609245eSIlya Dryomov } else { 26414609245eSIlya Dryomov send_linger_map_check(lreq); 26424609245eSIlya Dryomov } 26434609245eSIlya Dryomov } 26444609245eSIlya Dryomov 26454609245eSIlya Dryomov static void linger_map_check_cb(struct ceph_mon_generic_request *greq) 26464609245eSIlya Dryomov { 26474609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 26484609245eSIlya Dryomov struct ceph_osd_linger_request *lreq; 26494609245eSIlya Dryomov u64 linger_id = greq->private_data; 26504609245eSIlya Dryomov 26514609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 26524609245eSIlya Dryomov 26534609245eSIlya Dryomov down_write(&osdc->lock); 26544609245eSIlya Dryomov lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); 26554609245eSIlya Dryomov if (!lreq) { 26564609245eSIlya Dryomov dout("%s linger_id %llu dne\n", __func__, linger_id); 26574609245eSIlya Dryomov goto out_unlock; 26584609245eSIlya Dryomov } 26594609245eSIlya Dryomov 26604609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", 26614609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 26624609245eSIlya Dryomov greq->u.newest); 26634609245eSIlya Dryomov if (!lreq->map_dne_bound) 26644609245eSIlya Dryomov lreq->map_dne_bound = greq->u.newest; 26654609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 26664609245eSIlya Dryomov check_linger_pool_dne(lreq); 26674609245eSIlya Dryomov 26684609245eSIlya Dryomov linger_put(lreq); 26694609245eSIlya Dryomov out_unlock: 26704609245eSIlya Dryomov up_write(&osdc->lock); 26714609245eSIlya Dryomov } 26724609245eSIlya Dryomov 26734609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq) 26744609245eSIlya Dryomov { 26754609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 26764609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 26774609245eSIlya Dryomov int ret; 26784609245eSIlya Dryomov 26794609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 26804609245eSIlya Dryomov 26814609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 26824609245eSIlya Dryomov lreq->linger_id); 26834609245eSIlya Dryomov if (lookup_lreq) { 26844609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 26854609245eSIlya Dryomov return; 26864609245eSIlya Dryomov } 26874609245eSIlya Dryomov 26884609245eSIlya Dryomov linger_get(lreq); 26894609245eSIlya Dryomov insert_linger_mc(&osdc->linger_map_checks, lreq); 26904609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 26914609245eSIlya Dryomov linger_map_check_cb, lreq->linger_id); 26924609245eSIlya Dryomov WARN_ON(ret); 26934609245eSIlya Dryomov } 26944609245eSIlya Dryomov 2695922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 2696922dab61SIlya Dryomov { 2697922dab61SIlya Dryomov int ret; 2698922dab61SIlya Dryomov 2699922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2700922dab61SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); 2701922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 2702922dab61SIlya Dryomov } 2703922dab61SIlya Dryomov 270419079203SIlya Dryomov static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) 270519079203SIlya Dryomov { 270619079203SIlya Dryomov int ret; 270719079203SIlya Dryomov 270819079203SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 270919079203SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); 271019079203SIlya Dryomov return ret ?: lreq->notify_finish_error; 271119079203SIlya Dryomov } 271219079203SIlya Dryomov 2713922dab61SIlya Dryomov /* 2714fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 2715fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 2716fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 2717fbca9635SIlya Dryomov * reset is detected. 27183d14c5d2SYehuda Sadeh */ 27193d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 27203d14c5d2SYehuda Sadeh { 27213d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 27223d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 2723a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 27245aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 27257cc5e38fSIlya Dryomov unsigned long expiry_cutoff = jiffies - opts->osd_request_timeout; 27265aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 27275aea3dcdSIlya Dryomov struct rb_node *n, *p; 27283d14c5d2SYehuda Sadeh 27295aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 27305aea3dcdSIlya Dryomov down_write(&osdc->lock); 27313d14c5d2SYehuda Sadeh 27323d14c5d2SYehuda Sadeh /* 27333d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 27343d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 27353d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 27363d14c5d2SYehuda Sadeh */ 27375aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 27385aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 27395aea3dcdSIlya Dryomov bool found = false; 27403d14c5d2SYehuda Sadeh 27417cc5e38fSIlya Dryomov for (p = rb_first(&osd->o_requests); p; ) { 27425aea3dcdSIlya Dryomov struct ceph_osd_request *req = 27435aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 27445aea3dcdSIlya Dryomov 27457cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 27467cc5e38fSIlya Dryomov 27475aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 27485aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 27495aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 27505aea3dcdSIlya Dryomov found = true; 27515aea3dcdSIlya Dryomov } 27527cc5e38fSIlya Dryomov if (opts->osd_request_timeout && 27537cc5e38fSIlya Dryomov time_before(req->r_start_stamp, expiry_cutoff)) { 27547cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 27557cc5e38fSIlya Dryomov req->r_tid, osd->o_osd); 27567cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 27577cc5e38fSIlya Dryomov } 27585aea3dcdSIlya Dryomov } 2759922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 2760922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2761922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 2762922dab61SIlya Dryomov 2763922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 2764922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 2765922dab61SIlya Dryomov found = true; 2766922dab61SIlya Dryomov 2767922dab61SIlya Dryomov mutex_lock(&lreq->lock); 276819079203SIlya Dryomov if (lreq->is_watch && lreq->committed && !lreq->last_error) 2769922dab61SIlya Dryomov send_linger_ping(lreq); 2770922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2771922dab61SIlya Dryomov } 27725aea3dcdSIlya Dryomov 27735aea3dcdSIlya Dryomov if (found) 27743d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 27753d14c5d2SYehuda Sadeh } 27765aea3dcdSIlya Dryomov 27777cc5e38fSIlya Dryomov if (opts->osd_request_timeout) { 27787cc5e38fSIlya Dryomov for (p = rb_first(&osdc->homeless_osd.o_requests); p; ) { 27797cc5e38fSIlya Dryomov struct ceph_osd_request *req = 27807cc5e38fSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 27817cc5e38fSIlya Dryomov 27827cc5e38fSIlya Dryomov p = rb_next(p); /* abort_request() */ 27837cc5e38fSIlya Dryomov 27847cc5e38fSIlya Dryomov if (time_before(req->r_start_stamp, expiry_cutoff)) { 27857cc5e38fSIlya Dryomov pr_err_ratelimited("tid %llu on osd%d timeout\n", 27867cc5e38fSIlya Dryomov req->r_tid, osdc->homeless_osd.o_osd); 27877cc5e38fSIlya Dryomov abort_request(req, -ETIMEDOUT); 27887cc5e38fSIlya Dryomov } 27897cc5e38fSIlya Dryomov } 27907cc5e38fSIlya Dryomov } 27917cc5e38fSIlya Dryomov 27925aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 27935aea3dcdSIlya Dryomov maybe_request_map(osdc); 27945aea3dcdSIlya Dryomov 27953d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 27965aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 27975aea3dcdSIlya Dryomov struct ceph_osd, 27983d14c5d2SYehuda Sadeh o_keepalive_item); 27993d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 28003d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 28013d14c5d2SYehuda Sadeh } 28023d14c5d2SYehuda Sadeh 28035aea3dcdSIlya Dryomov up_write(&osdc->lock); 2804fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 2805fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 28063d14c5d2SYehuda Sadeh } 28073d14c5d2SYehuda Sadeh 28083d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 28093d14c5d2SYehuda Sadeh { 28103d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 28113d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 28123d14c5d2SYehuda Sadeh osds_timeout_work.work); 2813a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 281442a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 28153d14c5d2SYehuda Sadeh 281642a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 28175aea3dcdSIlya Dryomov down_write(&osdc->lock); 281842a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 281942a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 282042a2c09fSIlya Dryomov break; 282142a2c09fSIlya Dryomov 28225aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 2823922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 28245aea3dcdSIlya Dryomov close_osd(osd); 282542a2c09fSIlya Dryomov } 282642a2c09fSIlya Dryomov 28275aea3dcdSIlya Dryomov up_write(&osdc->lock); 28283d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 28293d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 28303d14c5d2SYehuda Sadeh } 28313d14c5d2SYehuda Sadeh 2832205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 2833205ee118SIlya Dryomov struct ceph_object_locator *oloc) 2834205ee118SIlya Dryomov { 2835205ee118SIlya Dryomov u8 struct_v, struct_cv; 2836205ee118SIlya Dryomov u32 len; 2837205ee118SIlya Dryomov void *struct_end; 2838205ee118SIlya Dryomov int ret = 0; 2839205ee118SIlya Dryomov 2840205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 2841205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 2842205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 2843205ee118SIlya Dryomov if (struct_v < 3) { 2844205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 2845205ee118SIlya Dryomov struct_v, struct_cv); 2846205ee118SIlya Dryomov goto e_inval; 2847205ee118SIlya Dryomov } 2848205ee118SIlya Dryomov if (struct_cv > 6) { 2849205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 2850205ee118SIlya Dryomov struct_v, struct_cv); 2851205ee118SIlya Dryomov goto e_inval; 2852205ee118SIlya Dryomov } 2853205ee118SIlya Dryomov len = ceph_decode_32(p); 2854205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 2855205ee118SIlya Dryomov struct_end = *p + len; 2856205ee118SIlya Dryomov 2857205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 2858205ee118SIlya Dryomov *p += 4; /* skip preferred */ 2859205ee118SIlya Dryomov 2860205ee118SIlya Dryomov len = ceph_decode_32(p); 2861205ee118SIlya Dryomov if (len > 0) { 2862205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 2863205ee118SIlya Dryomov goto e_inval; 2864205ee118SIlya Dryomov } 2865205ee118SIlya Dryomov 2866205ee118SIlya Dryomov if (struct_v >= 5) { 2867cd08e0a2SYan, Zheng bool changed = false; 2868cd08e0a2SYan, Zheng 2869205ee118SIlya Dryomov len = ceph_decode_32(p); 2870205ee118SIlya Dryomov if (len > 0) { 287130c156d9SYan, Zheng ceph_decode_need(p, end, len, e_inval); 2872cd08e0a2SYan, Zheng if (!oloc->pool_ns || 2873cd08e0a2SYan, Zheng ceph_compare_string(oloc->pool_ns, *p, len)) 2874cd08e0a2SYan, Zheng changed = true; 287530c156d9SYan, Zheng *p += len; 2876cd08e0a2SYan, Zheng } else { 2877cd08e0a2SYan, Zheng if (oloc->pool_ns) 2878cd08e0a2SYan, Zheng changed = true; 2879cd08e0a2SYan, Zheng } 2880cd08e0a2SYan, Zheng if (changed) { 2881cd08e0a2SYan, Zheng /* redirect changes namespace */ 2882cd08e0a2SYan, Zheng pr_warn("ceph_object_locator::nspace is changed\n"); 2883cd08e0a2SYan, Zheng goto e_inval; 2884205ee118SIlya Dryomov } 2885205ee118SIlya Dryomov } 2886205ee118SIlya Dryomov 2887205ee118SIlya Dryomov if (struct_v >= 6) { 2888205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 2889205ee118SIlya Dryomov if (hash != -1) { 2890205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 2891205ee118SIlya Dryomov goto e_inval; 2892205ee118SIlya Dryomov } 2893205ee118SIlya Dryomov } 2894205ee118SIlya Dryomov 2895205ee118SIlya Dryomov /* skip the rest */ 2896205ee118SIlya Dryomov *p = struct_end; 2897205ee118SIlya Dryomov out: 2898205ee118SIlya Dryomov return ret; 2899205ee118SIlya Dryomov 2900205ee118SIlya Dryomov e_inval: 2901205ee118SIlya Dryomov ret = -EINVAL; 2902205ee118SIlya Dryomov goto out; 2903205ee118SIlya Dryomov } 2904205ee118SIlya Dryomov 2905205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 2906205ee118SIlya Dryomov struct ceph_request_redirect *redir) 2907205ee118SIlya Dryomov { 2908205ee118SIlya Dryomov u8 struct_v, struct_cv; 2909205ee118SIlya Dryomov u32 len; 2910205ee118SIlya Dryomov void *struct_end; 2911205ee118SIlya Dryomov int ret; 2912205ee118SIlya Dryomov 2913205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 2914205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 2915205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 2916205ee118SIlya Dryomov if (struct_cv > 1) { 2917205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 2918205ee118SIlya Dryomov struct_v, struct_cv); 2919205ee118SIlya Dryomov goto e_inval; 2920205ee118SIlya Dryomov } 2921205ee118SIlya Dryomov len = ceph_decode_32(p); 2922205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 2923205ee118SIlya Dryomov struct_end = *p + len; 2924205ee118SIlya Dryomov 2925205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 2926205ee118SIlya Dryomov if (ret) 2927205ee118SIlya Dryomov goto out; 2928205ee118SIlya Dryomov 2929205ee118SIlya Dryomov len = ceph_decode_32(p); 2930205ee118SIlya Dryomov if (len > 0) { 2931205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 2932205ee118SIlya Dryomov goto e_inval; 2933205ee118SIlya Dryomov } 2934205ee118SIlya Dryomov 2935205ee118SIlya Dryomov len = ceph_decode_32(p); 2936205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 2937205ee118SIlya Dryomov 2938205ee118SIlya Dryomov /* skip the rest */ 2939205ee118SIlya Dryomov *p = struct_end; 2940205ee118SIlya Dryomov out: 2941205ee118SIlya Dryomov return ret; 2942205ee118SIlya Dryomov 2943205ee118SIlya Dryomov e_inval: 2944205ee118SIlya Dryomov ret = -EINVAL; 2945205ee118SIlya Dryomov goto out; 2946205ee118SIlya Dryomov } 2947205ee118SIlya Dryomov 2948fe5da05eSIlya Dryomov struct MOSDOpReply { 2949fe5da05eSIlya Dryomov struct ceph_pg pgid; 2950fe5da05eSIlya Dryomov u64 flags; 2951fe5da05eSIlya Dryomov int result; 2952fe5da05eSIlya Dryomov u32 epoch; 2953fe5da05eSIlya Dryomov int num_ops; 2954fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 2955fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 2956fe5da05eSIlya Dryomov int retry_attempt; 2957fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 2958fe5da05eSIlya Dryomov u64 user_version; 2959fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 2960fe5da05eSIlya Dryomov }; 296125845472SSage Weil 2962fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 29633d14c5d2SYehuda Sadeh { 2964fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 2965fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 2966fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 2967fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 2968b0b31a8fSIlya Dryomov u8 decode_redir; 2969fe5da05eSIlya Dryomov u32 len; 2970fe5da05eSIlya Dryomov int ret; 2971fe5da05eSIlya Dryomov int i; 29723d14c5d2SYehuda Sadeh 2973fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 2974fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 2975fe5da05eSIlya Dryomov p += len; /* skip oid */ 29761b83bef2SSage Weil 2977fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 2978fe5da05eSIlya Dryomov if (ret) 2979fe5da05eSIlya Dryomov return ret; 29801b83bef2SSage Weil 2981fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 2982fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 2983fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 2984fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 2985fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 2986fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 29871b83bef2SSage Weil 2988fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 2989fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 2990fe5da05eSIlya Dryomov goto e_inval; 29911b83bef2SSage Weil 2992fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 2993fe5da05eSIlya Dryomov e_inval); 2994fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 29951b83bef2SSage Weil struct ceph_osd_op *op = p; 29961b83bef2SSage Weil 2997fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 29981b83bef2SSage Weil p += sizeof(*op); 29991b83bef2SSage Weil } 3000fe5da05eSIlya Dryomov 3001fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 3002fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 3003fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 3004fe5da05eSIlya Dryomov 3005fe5da05eSIlya Dryomov if (version >= 5) { 3006fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 3007fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 3008fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 3009fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 3010fe5da05eSIlya Dryomov } else { 3011fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 3012fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 30131b83bef2SSage Weil } 30141b83bef2SSage Weil 3015fe5da05eSIlya Dryomov if (version >= 6) { 3016fe5da05eSIlya Dryomov if (version >= 7) 3017fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 3018b0b31a8fSIlya Dryomov else 3019b0b31a8fSIlya Dryomov decode_redir = 1; 3020b0b31a8fSIlya Dryomov } else { 3021b0b31a8fSIlya Dryomov decode_redir = 0; 3022b0b31a8fSIlya Dryomov } 3023b0b31a8fSIlya Dryomov 3024b0b31a8fSIlya Dryomov if (decode_redir) { 3025fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 3026fe5da05eSIlya Dryomov if (ret) 3027fe5da05eSIlya Dryomov return ret; 3028205ee118SIlya Dryomov } else { 3029fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 3030205ee118SIlya Dryomov } 3031205ee118SIlya Dryomov 3032fe5da05eSIlya Dryomov return 0; 3033205ee118SIlya Dryomov 3034fe5da05eSIlya Dryomov e_inval: 3035fe5da05eSIlya Dryomov return -EINVAL; 3036fe5da05eSIlya Dryomov } 3037fe5da05eSIlya Dryomov 3038fe5da05eSIlya Dryomov /* 3039b18b9550SIlya Dryomov * Handle MOSDOpReply. Set ->r_result and call the callback if it is 3040b18b9550SIlya Dryomov * specified. 3041fe5da05eSIlya Dryomov */ 30425aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 3043fe5da05eSIlya Dryomov { 30445aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 3045fe5da05eSIlya Dryomov struct ceph_osd_request *req; 3046fe5da05eSIlya Dryomov struct MOSDOpReply m; 3047fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 3048fe5da05eSIlya Dryomov u32 data_len = 0; 3049fe5da05eSIlya Dryomov int ret; 3050fe5da05eSIlya Dryomov int i; 3051fe5da05eSIlya Dryomov 3052fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 3053fe5da05eSIlya Dryomov 30545aea3dcdSIlya Dryomov down_read(&osdc->lock); 30555aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 30565aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 30575aea3dcdSIlya Dryomov goto out_unlock_osdc; 3058fe5da05eSIlya Dryomov } 30595aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 30605aea3dcdSIlya Dryomov 30615aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 30625aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 30635aea3dcdSIlya Dryomov if (!req) { 30645aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 30655aea3dcdSIlya Dryomov goto out_unlock_session; 30665aea3dcdSIlya Dryomov } 3067fe5da05eSIlya Dryomov 3068cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns; 3069fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 3070cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = NULL; 3071fe5da05eSIlya Dryomov if (ret) { 3072fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 3073fe5da05eSIlya Dryomov req->r_tid, ret); 3074fe5da05eSIlya Dryomov ceph_msg_dump(msg); 3075fe5da05eSIlya Dryomov goto fail_request; 3076fe5da05eSIlya Dryomov } 3077fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 3078fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 3079fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 3080fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 3081fe5da05eSIlya Dryomov 3082fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 3083fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 3084fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 3085fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 3086fe5da05eSIlya Dryomov req->r_attempts - 1); 30875aea3dcdSIlya Dryomov goto out_unlock_session; 3088fe5da05eSIlya Dryomov } 3089fe5da05eSIlya Dryomov } else { 3090fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 3091fe5da05eSIlya Dryomov } 3092fe5da05eSIlya Dryomov 3093fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 3094fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 3095fe5da05eSIlya Dryomov m.redirect.oloc.pool); 30965aea3dcdSIlya Dryomov unlink_request(osd, req); 30975aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 3098205ee118SIlya Dryomov 309930c156d9SYan, Zheng /* 310030c156d9SYan, Zheng * Not ceph_oloc_copy() - changing pool_ns is not 310130c156d9SYan, Zheng * supported. 310230c156d9SYan, Zheng */ 310330c156d9SYan, Zheng req->r_t.target_oloc.pool = m.redirect.oloc.pool; 31045aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; 31055aea3dcdSIlya Dryomov req->r_tid = 0; 31065aea3dcdSIlya Dryomov __submit_request(req, false); 31075aea3dcdSIlya Dryomov goto out_unlock_osdc; 3108205ee118SIlya Dryomov } 3109205ee118SIlya Dryomov 3110fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 3111fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 3112fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 3113fe5da05eSIlya Dryomov goto fail_request; 3114fe5da05eSIlya Dryomov } 3115fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 3116fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 3117fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 3118fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 3119fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 3120fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 3121fe5da05eSIlya Dryomov } 3122fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 3123fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 3124fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 3125fe5da05eSIlya Dryomov goto fail_request; 3126fe5da05eSIlya Dryomov } 3127b18b9550SIlya Dryomov dout("%s req %p tid %llu result %d data_len %u\n", __func__, 3128b18b9550SIlya Dryomov req, req->r_tid, m.result, data_len); 31293d14c5d2SYehuda Sadeh 3130b18b9550SIlya Dryomov /* 3131b18b9550SIlya Dryomov * Since we only ever request ONDISK, we should only ever get 3132b18b9550SIlya Dryomov * one (type of) reply back. 3133b18b9550SIlya Dryomov */ 3134b18b9550SIlya Dryomov WARN_ON(!(m.flags & CEPH_OSD_FLAG_ONDISK)); 3135fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 313645ee2c1dSIlya Dryomov finish_request(req); 31375aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 31385aea3dcdSIlya Dryomov up_read(&osdc->lock); 31393d14c5d2SYehuda Sadeh 3140fe5da05eSIlya Dryomov __complete_request(req); 3141b18b9550SIlya Dryomov complete_all(&req->r_completion); 3142dc045a91SIlya Dryomov ceph_osdc_put_request(req); 31433d14c5d2SYehuda Sadeh return; 3144fe5da05eSIlya Dryomov 3145fe5da05eSIlya Dryomov fail_request: 31464609245eSIlya Dryomov complete_request(req, -EIO); 31475aea3dcdSIlya Dryomov out_unlock_session: 31485aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 31495aea3dcdSIlya Dryomov out_unlock_osdc: 31505aea3dcdSIlya Dryomov up_read(&osdc->lock); 31513d14c5d2SYehuda Sadeh } 31523d14c5d2SYehuda Sadeh 315342c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 315442c1b124SIlya Dryomov { 315542c1b124SIlya Dryomov struct rb_node *n; 315642c1b124SIlya Dryomov 315742c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 315842c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 315942c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 316042c1b124SIlya Dryomov 316142c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 316242c1b124SIlya Dryomov } 316342c1b124SIlya Dryomov } 316442c1b124SIlya Dryomov 31655aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 31663d14c5d2SYehuda Sadeh { 31675aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 31683d14c5d2SYehuda Sadeh 31695aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 31705aea3dcdSIlya Dryomov if (!pi) 31715aea3dcdSIlya Dryomov return false; 31723d14c5d2SYehuda Sadeh 31735aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 31743d14c5d2SYehuda Sadeh } 31753d14c5d2SYehuda Sadeh 3176922dab61SIlya Dryomov static enum calc_target_result 3177922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 3178922dab61SIlya Dryomov { 3179922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 3180922dab61SIlya Dryomov enum calc_target_result ct_res; 3181922dab61SIlya Dryomov 3182dc93e0e2SIlya Dryomov ct_res = calc_target(osdc, &lreq->t, true); 3183922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 3184922dab61SIlya Dryomov struct ceph_osd *osd; 3185922dab61SIlya Dryomov 3186922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 3187922dab61SIlya Dryomov if (osd != lreq->osd) { 3188922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 3189922dab61SIlya Dryomov link_linger(osd, lreq); 3190922dab61SIlya Dryomov } 3191922dab61SIlya Dryomov } 3192922dab61SIlya Dryomov 3193922dab61SIlya Dryomov return ct_res; 3194922dab61SIlya Dryomov } 3195922dab61SIlya Dryomov 31963d14c5d2SYehuda Sadeh /* 31975aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 31983d14c5d2SYehuda Sadeh */ 31995aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 32005aea3dcdSIlya Dryomov bool force_resend, 32015aea3dcdSIlya Dryomov bool cleared_full, 32025aea3dcdSIlya Dryomov bool check_pool_cleared_full, 32035aea3dcdSIlya Dryomov struct rb_root *need_resend, 32045aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 32053d14c5d2SYehuda Sadeh { 32065aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 32075aea3dcdSIlya Dryomov struct rb_node *n; 32085aea3dcdSIlya Dryomov bool force_resend_writes; 32093d14c5d2SYehuda Sadeh 3210922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 3211922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3212922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3213922dab61SIlya Dryomov enum calc_target_result ct_res; 3214922dab61SIlya Dryomov 3215922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 3216922dab61SIlya Dryomov 3217922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 3218922dab61SIlya Dryomov lreq->linger_id); 3219922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 3220922dab61SIlya Dryomov switch (ct_res) { 3221922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 3222922dab61SIlya Dryomov force_resend_writes = cleared_full || 3223922dab61SIlya Dryomov (check_pool_cleared_full && 3224922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 3225922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 3226922dab61SIlya Dryomov break; 3227922dab61SIlya Dryomov 3228922dab61SIlya Dryomov /* fall through */ 3229922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 32304609245eSIlya Dryomov cancel_linger_map_check(lreq); 3231922dab61SIlya Dryomov /* 3232922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 3233922dab61SIlya Dryomov * may have already added it to the list, since 3234922dab61SIlya Dryomov * it's not unlinked here. 3235922dab61SIlya Dryomov */ 3236922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 3237922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 3238922dab61SIlya Dryomov break; 3239922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 32404609245eSIlya Dryomov check_linger_pool_dne(lreq); 3241922dab61SIlya Dryomov break; 3242922dab61SIlya Dryomov } 3243922dab61SIlya Dryomov } 3244922dab61SIlya Dryomov 32455aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 32465aea3dcdSIlya Dryomov struct ceph_osd_request *req = 32475aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 32485aea3dcdSIlya Dryomov enum calc_target_result ct_res; 3249ab60b16dSAlex Elder 32504609245eSIlya Dryomov n = rb_next(n); /* unlink_request(), check_pool_dne() */ 3251ab60b16dSAlex Elder 32525aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 3253dc93e0e2SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, false); 32545aea3dcdSIlya Dryomov switch (ct_res) { 32555aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 32565aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 32575aea3dcdSIlya Dryomov (check_pool_cleared_full && 32585aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 32595aea3dcdSIlya Dryomov if (!force_resend && 32605aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 32615aea3dcdSIlya Dryomov !force_resend_writes)) 32625aea3dcdSIlya Dryomov break; 3263a40c4f10SYehuda Sadeh 32645aea3dcdSIlya Dryomov /* fall through */ 32655aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 32664609245eSIlya Dryomov cancel_map_check(req); 32675aea3dcdSIlya Dryomov unlink_request(osd, req); 32685aea3dcdSIlya Dryomov insert_request(need_resend, req); 32695aea3dcdSIlya Dryomov break; 32705aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 32714609245eSIlya Dryomov check_pool_dne(req); 32725aea3dcdSIlya Dryomov break; 3273a40c4f10SYehuda Sadeh } 32743d14c5d2SYehuda Sadeh } 32753d14c5d2SYehuda Sadeh } 32766f6c7006SSage Weil 327742c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 32785aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 32795aea3dcdSIlya Dryomov struct rb_root *need_resend, 32805aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 328142c1b124SIlya Dryomov { 328242c1b124SIlya Dryomov struct ceph_osdmap *newmap; 328342c1b124SIlya Dryomov struct rb_node *n; 328442c1b124SIlya Dryomov bool skipped_map = false; 328542c1b124SIlya Dryomov bool was_full; 328642c1b124SIlya Dryomov 3287b7ec35b3SIlya Dryomov was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 328842c1b124SIlya Dryomov set_pool_was_full(osdc); 328942c1b124SIlya Dryomov 329042c1b124SIlya Dryomov if (incremental) 329142c1b124SIlya Dryomov newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); 329242c1b124SIlya Dryomov else 329342c1b124SIlya Dryomov newmap = ceph_osdmap_decode(&p, end); 329442c1b124SIlya Dryomov if (IS_ERR(newmap)) 329542c1b124SIlya Dryomov return PTR_ERR(newmap); 329642c1b124SIlya Dryomov 329742c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 329842c1b124SIlya Dryomov /* 329942c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 330042c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 330142c1b124SIlya Dryomov * should be false. 330242c1b124SIlya Dryomov */ 330342c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 330442c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 330542c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 330642c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 330742c1b124SIlya Dryomov 330842c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 330942c1b124SIlya Dryomov if (old_pi) 331042c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 331142c1b124SIlya Dryomov else 331242c1b124SIlya Dryomov WARN_ON(pi->was_full); 331342c1b124SIlya Dryomov } 331442c1b124SIlya Dryomov 331542c1b124SIlya Dryomov if (osdc->osdmap->epoch && 331642c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 331742c1b124SIlya Dryomov WARN_ON(incremental); 331842c1b124SIlya Dryomov skipped_map = true; 331942c1b124SIlya Dryomov } 332042c1b124SIlya Dryomov 332142c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 332242c1b124SIlya Dryomov osdc->osdmap = newmap; 332342c1b124SIlya Dryomov } 332442c1b124SIlya Dryomov 3325b7ec35b3SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 33265aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 33275aea3dcdSIlya Dryomov need_resend, need_resend_linger); 33285aea3dcdSIlya Dryomov 33295aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 33305aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 33315aea3dcdSIlya Dryomov 33325aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 33335aea3dcdSIlya Dryomov 33345aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 33355aea3dcdSIlya Dryomov need_resend_linger); 33365aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 33375aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 33385aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 33395aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 33405aea3dcdSIlya Dryomov close_osd(osd); 33415aea3dcdSIlya Dryomov } 334242c1b124SIlya Dryomov 334342c1b124SIlya Dryomov return 0; 334442c1b124SIlya Dryomov } 33456f6c7006SSage Weil 33465aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 33475aea3dcdSIlya Dryomov struct rb_root *need_resend, 33485aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 33495aea3dcdSIlya Dryomov { 3350922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 33515aea3dcdSIlya Dryomov struct rb_node *n; 33525aea3dcdSIlya Dryomov 33535aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 33545aea3dcdSIlya Dryomov struct ceph_osd_request *req = 33555aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 33565aea3dcdSIlya Dryomov struct ceph_osd *osd; 33575aea3dcdSIlya Dryomov 33585aea3dcdSIlya Dryomov n = rb_next(n); 33595aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 33605aea3dcdSIlya Dryomov 33615aea3dcdSIlya Dryomov WARN_ON(req->r_osd); 3362dc93e0e2SIlya Dryomov calc_target(osdc, &req->r_t, false); 33635aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 33645aea3dcdSIlya Dryomov link_request(osd, req); 33655aea3dcdSIlya Dryomov if (!req->r_linger) { 33665aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 33675aea3dcdSIlya Dryomov send_request(req); 3368922dab61SIlya Dryomov } else { 3369922dab61SIlya Dryomov cancel_linger_request(req); 33705aea3dcdSIlya Dryomov } 33715aea3dcdSIlya Dryomov } 3372922dab61SIlya Dryomov 3373922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 3374922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 3375922dab61SIlya Dryomov send_linger(lreq); 3376922dab61SIlya Dryomov 3377922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 3378922dab61SIlya Dryomov } 33795aea3dcdSIlya Dryomov } 33805aea3dcdSIlya Dryomov 33813d14c5d2SYehuda Sadeh /* 33823d14c5d2SYehuda Sadeh * Process updated osd map. 33833d14c5d2SYehuda Sadeh * 33843d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 33853d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 33863d14c5d2SYehuda Sadeh * off to different OSDs as needed. 33873d14c5d2SYehuda Sadeh */ 33883d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 33893d14c5d2SYehuda Sadeh { 339042c1b124SIlya Dryomov void *p = msg->front.iov_base; 339142c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 33923d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 33933d14c5d2SYehuda Sadeh u32 epoch; 33943d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 33955aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 33965aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 339742c1b124SIlya Dryomov bool handled_incremental = false; 339842c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 339942c1b124SIlya Dryomov bool pauserd, pausewr; 340042c1b124SIlya Dryomov int err; 34013d14c5d2SYehuda Sadeh 340242c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 34035aea3dcdSIlya Dryomov down_write(&osdc->lock); 34043d14c5d2SYehuda Sadeh 34053d14c5d2SYehuda Sadeh /* verify fsid */ 34063d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 34073d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 34083d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 340942c1b124SIlya Dryomov goto bad; 34103d14c5d2SYehuda Sadeh 3411b7ec35b3SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3412b7ec35b3SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3413b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 341442c1b124SIlya Dryomov have_pool_full(osdc); 34159a1ea2dbSJosh Durgin 34163d14c5d2SYehuda Sadeh /* incremental maps */ 34173d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 34183d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 34193d14c5d2SYehuda Sadeh while (nr_maps > 0) { 34203d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 34213d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 34223d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 34233d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 342442c1b124SIlya Dryomov if (osdc->osdmap->epoch && 342542c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 34263d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 34273d14c5d2SYehuda Sadeh epoch, maplen); 34285aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 34295aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 343042c1b124SIlya Dryomov if (err) 34313d14c5d2SYehuda Sadeh goto bad; 343242c1b124SIlya Dryomov handled_incremental = true; 34333d14c5d2SYehuda Sadeh } else { 34343d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 34353d14c5d2SYehuda Sadeh epoch, maplen); 34363d14c5d2SYehuda Sadeh } 343742c1b124SIlya Dryomov p += maplen; 34383d14c5d2SYehuda Sadeh nr_maps--; 34393d14c5d2SYehuda Sadeh } 344042c1b124SIlya Dryomov if (handled_incremental) 34413d14c5d2SYehuda Sadeh goto done; 34423d14c5d2SYehuda Sadeh 34433d14c5d2SYehuda Sadeh /* full maps */ 34443d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 34453d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 34463d14c5d2SYehuda Sadeh while (nr_maps) { 34473d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 34483d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 34493d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 34503d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 34513d14c5d2SYehuda Sadeh if (nr_maps > 1) { 34523d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 34533d14c5d2SYehuda Sadeh epoch, maplen); 3454e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 34553d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 34563d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 34573d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 34583d14c5d2SYehuda Sadeh } else { 34593d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 34605aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 34615aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 346242c1b124SIlya Dryomov if (err) 34633d14c5d2SYehuda Sadeh goto bad; 34643d14c5d2SYehuda Sadeh } 34653d14c5d2SYehuda Sadeh p += maplen; 34663d14c5d2SYehuda Sadeh nr_maps--; 34673d14c5d2SYehuda Sadeh } 34683d14c5d2SYehuda Sadeh 34693d14c5d2SYehuda Sadeh done: 3470cd634fb6SSage Weil /* 3471cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 3472cd634fb6SSage Weil * we find out when we are no longer full and stop returning 3473cd634fb6SSage Weil * ENOSPC. 3474cd634fb6SSage Weil */ 3475b7ec35b3SIlya Dryomov pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3476b7ec35b3SIlya Dryomov pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3477b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 347842c1b124SIlya Dryomov have_pool_full(osdc); 347958eb7932SJeff Layton if (was_pauserd || was_pausewr || pauserd || pausewr || 348058eb7932SJeff Layton osdc->osdmap->epoch < osdc->epoch_barrier) 348142c1b124SIlya Dryomov maybe_request_map(osdc); 3482cd634fb6SSage Weil 34835aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 348442c1b124SIlya Dryomov 3485fc36d0a4SJeff Layton ceph_osdc_abort_on_full(osdc); 348642c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 348742c1b124SIlya Dryomov osdc->osdmap->epoch); 34885aea3dcdSIlya Dryomov up_write(&osdc->lock); 34893d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 34903d14c5d2SYehuda Sadeh return; 34913d14c5d2SYehuda Sadeh 34923d14c5d2SYehuda Sadeh bad: 34933d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 34943d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 34955aea3dcdSIlya Dryomov up_write(&osdc->lock); 34965aea3dcdSIlya Dryomov } 34975aea3dcdSIlya Dryomov 34985aea3dcdSIlya Dryomov /* 34995aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 35005aea3dcdSIlya Dryomov */ 35015aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 35025aea3dcdSIlya Dryomov { 35035aea3dcdSIlya Dryomov struct rb_node *n; 35045aea3dcdSIlya Dryomov 3505922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 35065aea3dcdSIlya Dryomov struct ceph_osd_request *req = 35075aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 35085aea3dcdSIlya Dryomov 3509922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 3510922dab61SIlya Dryomov 35115aea3dcdSIlya Dryomov if (!req->r_linger) { 35125aea3dcdSIlya Dryomov if (!req->r_t.paused) 35135aea3dcdSIlya Dryomov send_request(req); 3514922dab61SIlya Dryomov } else { 3515922dab61SIlya Dryomov cancel_linger_request(req); 35165aea3dcdSIlya Dryomov } 35175aea3dcdSIlya Dryomov } 3518922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 3519922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3520922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3521922dab61SIlya Dryomov 3522922dab61SIlya Dryomov send_linger(lreq); 3523922dab61SIlya Dryomov } 35245aea3dcdSIlya Dryomov } 35255aea3dcdSIlya Dryomov 35265aea3dcdSIlya Dryomov /* 35275aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 35285aea3dcdSIlya Dryomov */ 35295aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 35305aea3dcdSIlya Dryomov { 35315aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 35325aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 35335aea3dcdSIlya Dryomov 35345aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 35355aea3dcdSIlya Dryomov 35365aea3dcdSIlya Dryomov down_write(&osdc->lock); 35375aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 35385aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 35395aea3dcdSIlya Dryomov goto out_unlock; 35405aea3dcdSIlya Dryomov } 35415aea3dcdSIlya Dryomov 35425aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 35435aea3dcdSIlya Dryomov kick_osd_requests(osd); 35445aea3dcdSIlya Dryomov maybe_request_map(osdc); 35455aea3dcdSIlya Dryomov 35465aea3dcdSIlya Dryomov out_unlock: 35475aea3dcdSIlya Dryomov up_write(&osdc->lock); 35483d14c5d2SYehuda Sadeh } 35493d14c5d2SYehuda Sadeh 35503d14c5d2SYehuda Sadeh /* 3551a40c4f10SYehuda Sadeh * Process osd watch notifications 3552a40c4f10SYehuda Sadeh */ 35533c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 35543c663bbdSAlex Elder struct ceph_msg *msg) 3555a40c4f10SYehuda Sadeh { 3556922dab61SIlya Dryomov void *p = msg->front.iov_base; 3557922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 3558922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 3559922dab61SIlya Dryomov struct linger_work *lwork; 3560922dab61SIlya Dryomov u8 proto_ver, opcode; 3561922dab61SIlya Dryomov u64 cookie, notify_id; 3562922dab61SIlya Dryomov u64 notifier_id = 0; 356319079203SIlya Dryomov s32 return_code = 0; 3564922dab61SIlya Dryomov void *payload = NULL; 3565922dab61SIlya Dryomov u32 payload_len = 0; 3566a40c4f10SYehuda Sadeh 3567a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 3568a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 3569a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 3570922dab61SIlya Dryomov p += 8; /* skip ver */ 3571a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 3572a40c4f10SYehuda Sadeh 3573922dab61SIlya Dryomov if (proto_ver >= 1) { 3574922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 3575922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 3576922dab61SIlya Dryomov payload = p; 3577922dab61SIlya Dryomov p += payload_len; 3578a40c4f10SYehuda Sadeh } 3579a40c4f10SYehuda Sadeh 3580922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 358119079203SIlya Dryomov ceph_decode_32_safe(&p, end, return_code, bad); 3582922dab61SIlya Dryomov 3583922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 3584922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 3585922dab61SIlya Dryomov 3586922dab61SIlya Dryomov down_read(&osdc->lock); 3587922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 3588922dab61SIlya Dryomov if (!lreq) { 3589922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 3590922dab61SIlya Dryomov cookie); 3591922dab61SIlya Dryomov goto out_unlock_osdc; 3592922dab61SIlya Dryomov } 3593922dab61SIlya Dryomov 3594922dab61SIlya Dryomov mutex_lock(&lreq->lock); 359519079203SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, 359619079203SIlya Dryomov opcode, cookie, lreq, lreq->is_watch); 3597922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 3598922dab61SIlya Dryomov if (!lreq->last_error) { 3599922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 3600922dab61SIlya Dryomov queue_watch_error(lreq); 3601922dab61SIlya Dryomov } 360219079203SIlya Dryomov } else if (!lreq->is_watch) { 360319079203SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ 360419079203SIlya Dryomov if (lreq->notify_id && lreq->notify_id != notify_id) { 360519079203SIlya Dryomov dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, 360619079203SIlya Dryomov lreq->notify_id, notify_id); 360719079203SIlya Dryomov } else if (!completion_done(&lreq->notify_finish_wait)) { 360819079203SIlya Dryomov struct ceph_msg_data *data = 360919079203SIlya Dryomov list_first_entry_or_null(&msg->data, 361019079203SIlya Dryomov struct ceph_msg_data, 361119079203SIlya Dryomov links); 361219079203SIlya Dryomov 361319079203SIlya Dryomov if (data) { 361419079203SIlya Dryomov if (lreq->preply_pages) { 361519079203SIlya Dryomov WARN_ON(data->type != 361619079203SIlya Dryomov CEPH_MSG_DATA_PAGES); 361719079203SIlya Dryomov *lreq->preply_pages = data->pages; 361819079203SIlya Dryomov *lreq->preply_len = data->length; 361919079203SIlya Dryomov } else { 362019079203SIlya Dryomov ceph_release_page_vector(data->pages, 362119079203SIlya Dryomov calc_pages_for(0, data->length)); 362219079203SIlya Dryomov } 362319079203SIlya Dryomov } 362419079203SIlya Dryomov lreq->notify_finish_error = return_code; 362519079203SIlya Dryomov complete_all(&lreq->notify_finish_wait); 362619079203SIlya Dryomov } 3627922dab61SIlya Dryomov } else { 3628922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 3629922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 3630922dab61SIlya Dryomov if (!lwork) { 3631922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 3632922dab61SIlya Dryomov goto out_unlock_lreq; 3633922dab61SIlya Dryomov } 3634922dab61SIlya Dryomov 3635922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 3636922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 3637922dab61SIlya Dryomov lwork->notify.payload = payload; 3638922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 3639922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 3640922dab61SIlya Dryomov lwork_queue(lwork); 3641922dab61SIlya Dryomov } 3642922dab61SIlya Dryomov 3643922dab61SIlya Dryomov out_unlock_lreq: 3644922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3645922dab61SIlya Dryomov out_unlock_osdc: 3646922dab61SIlya Dryomov up_read(&osdc->lock); 3647a40c4f10SYehuda Sadeh return; 3648a40c4f10SYehuda Sadeh 3649a40c4f10SYehuda Sadeh bad: 3650a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 3651a40c4f10SYehuda Sadeh } 3652a40c4f10SYehuda Sadeh 3653a40c4f10SYehuda Sadeh /* 36543d14c5d2SYehuda Sadeh * Register request, send initial attempt. 36553d14c5d2SYehuda Sadeh */ 36563d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 36573d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 36583d14c5d2SYehuda Sadeh bool nofail) 36593d14c5d2SYehuda Sadeh { 36605aea3dcdSIlya Dryomov down_read(&osdc->lock); 36615aea3dcdSIlya Dryomov submit_request(req, false); 36625aea3dcdSIlya Dryomov up_read(&osdc->lock); 36633d14c5d2SYehuda Sadeh 36645aea3dcdSIlya Dryomov return 0; 36653d14c5d2SYehuda Sadeh } 36663d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 36673d14c5d2SYehuda Sadeh 36683d14c5d2SYehuda Sadeh /* 3669c297eb42SIlya Dryomov * Unregister a registered request. The request is not completed: 3670c297eb42SIlya Dryomov * ->r_result isn't set and __complete_request() isn't called. 3671c9f9b93dSIlya Dryomov */ 3672c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 3673c9f9b93dSIlya Dryomov { 3674c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 3675c9f9b93dSIlya Dryomov 36765aea3dcdSIlya Dryomov down_write(&osdc->lock); 36775aea3dcdSIlya Dryomov if (req->r_osd) 36785aea3dcdSIlya Dryomov cancel_request(req); 36795aea3dcdSIlya Dryomov up_write(&osdc->lock); 3680c9f9b93dSIlya Dryomov } 3681c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 3682c9f9b93dSIlya Dryomov 3683c9f9b93dSIlya Dryomov /* 368442b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 368542b06965SIlya Dryomov */ 368642b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 368742b06965SIlya Dryomov unsigned long timeout) 368842b06965SIlya Dryomov { 368942b06965SIlya Dryomov long left; 369042b06965SIlya Dryomov 369142b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 36920e76abf2SYan, Zheng left = wait_for_completion_killable_timeout(&req->r_completion, 369342b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 369442b06965SIlya Dryomov if (left <= 0) { 369542b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 369642b06965SIlya Dryomov ceph_osdc_cancel_request(req); 369742b06965SIlya Dryomov } else { 369842b06965SIlya Dryomov left = req->r_result; /* completed */ 369942b06965SIlya Dryomov } 370042b06965SIlya Dryomov 370142b06965SIlya Dryomov return left; 370242b06965SIlya Dryomov } 370342b06965SIlya Dryomov 370442b06965SIlya Dryomov /* 37053d14c5d2SYehuda Sadeh * wait for a request to complete 37063d14c5d2SYehuda Sadeh */ 37073d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 37083d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 37093d14c5d2SYehuda Sadeh { 371042b06965SIlya Dryomov return wait_request_timeout(req, 0); 37113d14c5d2SYehuda Sadeh } 37123d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 37133d14c5d2SYehuda Sadeh 37143d14c5d2SYehuda Sadeh /* 37153d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 37163d14c5d2SYehuda Sadeh */ 37173d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 37183d14c5d2SYehuda Sadeh { 37195aea3dcdSIlya Dryomov struct rb_node *n, *p; 37205aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 37213d14c5d2SYehuda Sadeh 37225aea3dcdSIlya Dryomov again: 37235aea3dcdSIlya Dryomov down_read(&osdc->lock); 37245aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 37255aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 37265aea3dcdSIlya Dryomov 37275aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 37285aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 37295aea3dcdSIlya Dryomov struct ceph_osd_request *req = 37305aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 37315aea3dcdSIlya Dryomov 37323d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 37333d14c5d2SYehuda Sadeh break; 37343d14c5d2SYehuda Sadeh 37355aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 37363d14c5d2SYehuda Sadeh continue; 37373d14c5d2SYehuda Sadeh 37383d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 37395aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 37405aea3dcdSIlya Dryomov up_read(&osdc->lock); 37415aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 37425aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 3743b18b9550SIlya Dryomov wait_for_completion(&req->r_completion); 37443d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 37455aea3dcdSIlya Dryomov goto again; 37463d14c5d2SYehuda Sadeh } 37475aea3dcdSIlya Dryomov 37485aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 37495aea3dcdSIlya Dryomov } 37505aea3dcdSIlya Dryomov 37515aea3dcdSIlya Dryomov up_read(&osdc->lock); 37525aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 37533d14c5d2SYehuda Sadeh } 37543d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 37553d14c5d2SYehuda Sadeh 3756922dab61SIlya Dryomov static struct ceph_osd_request * 3757922dab61SIlya Dryomov alloc_linger_request(struct ceph_osd_linger_request *lreq) 3758922dab61SIlya Dryomov { 3759922dab61SIlya Dryomov struct ceph_osd_request *req; 3760922dab61SIlya Dryomov 3761922dab61SIlya Dryomov req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); 3762922dab61SIlya Dryomov if (!req) 3763922dab61SIlya Dryomov return NULL; 3764922dab61SIlya Dryomov 3765922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 3766922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 3767922dab61SIlya Dryomov 3768922dab61SIlya Dryomov if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { 3769922dab61SIlya Dryomov ceph_osdc_put_request(req); 3770922dab61SIlya Dryomov return NULL; 3771922dab61SIlya Dryomov } 3772922dab61SIlya Dryomov 3773922dab61SIlya Dryomov return req; 3774922dab61SIlya Dryomov } 3775922dab61SIlya Dryomov 3776922dab61SIlya Dryomov /* 3777922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 3778922dab61SIlya Dryomov */ 3779922dab61SIlya Dryomov struct ceph_osd_linger_request * 3780922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 3781922dab61SIlya Dryomov struct ceph_object_id *oid, 3782922dab61SIlya Dryomov struct ceph_object_locator *oloc, 3783922dab61SIlya Dryomov rados_watchcb2_t wcb, 3784922dab61SIlya Dryomov rados_watcherrcb_t errcb, 3785922dab61SIlya Dryomov void *data) 3786922dab61SIlya Dryomov { 3787922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 3788922dab61SIlya Dryomov int ret; 3789922dab61SIlya Dryomov 3790922dab61SIlya Dryomov lreq = linger_alloc(osdc); 3791922dab61SIlya Dryomov if (!lreq) 3792922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 3793922dab61SIlya Dryomov 379419079203SIlya Dryomov lreq->is_watch = true; 3795922dab61SIlya Dryomov lreq->wcb = wcb; 3796922dab61SIlya Dryomov lreq->errcb = errcb; 3797922dab61SIlya Dryomov lreq->data = data; 3798b07d3c4bSIlya Dryomov lreq->watch_valid_thru = jiffies; 3799922dab61SIlya Dryomov 3800922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 3801922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 380254ea0046SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE; 38031134e091SDeepa Dinamani ktime_get_real_ts(&lreq->mtime); 3804922dab61SIlya Dryomov 3805922dab61SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 3806922dab61SIlya Dryomov if (!lreq->reg_req) { 3807922dab61SIlya Dryomov ret = -ENOMEM; 3808922dab61SIlya Dryomov goto err_put_lreq; 3809922dab61SIlya Dryomov } 3810922dab61SIlya Dryomov 3811922dab61SIlya Dryomov lreq->ping_req = alloc_linger_request(lreq); 3812922dab61SIlya Dryomov if (!lreq->ping_req) { 3813922dab61SIlya Dryomov ret = -ENOMEM; 3814922dab61SIlya Dryomov goto err_put_lreq; 3815922dab61SIlya Dryomov } 3816922dab61SIlya Dryomov 3817922dab61SIlya Dryomov down_write(&osdc->lock); 3818922dab61SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 3819922dab61SIlya Dryomov osd_req_op_watch_init(lreq->reg_req, 0, lreq->linger_id, 3820922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_WATCH); 3821922dab61SIlya Dryomov osd_req_op_watch_init(lreq->ping_req, 0, lreq->linger_id, 3822922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_PING); 3823922dab61SIlya Dryomov linger_submit(lreq); 3824922dab61SIlya Dryomov up_write(&osdc->lock); 3825922dab61SIlya Dryomov 3826922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 3827922dab61SIlya Dryomov if (ret) { 3828922dab61SIlya Dryomov linger_cancel(lreq); 3829922dab61SIlya Dryomov goto err_put_lreq; 3830922dab61SIlya Dryomov } 3831922dab61SIlya Dryomov 3832922dab61SIlya Dryomov return lreq; 3833922dab61SIlya Dryomov 3834922dab61SIlya Dryomov err_put_lreq: 3835922dab61SIlya Dryomov linger_put(lreq); 3836922dab61SIlya Dryomov return ERR_PTR(ret); 3837922dab61SIlya Dryomov } 3838922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 3839922dab61SIlya Dryomov 3840922dab61SIlya Dryomov /* 3841922dab61SIlya Dryomov * Releases a ref. 3842922dab61SIlya Dryomov * 3843922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 3844922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 3845922dab61SIlya Dryomov * with mount_timeout"). 3846922dab61SIlya Dryomov */ 3847922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 3848922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 3849922dab61SIlya Dryomov { 3850922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 3851922dab61SIlya Dryomov struct ceph_osd_request *req; 3852922dab61SIlya Dryomov int ret; 3853922dab61SIlya Dryomov 3854922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 3855922dab61SIlya Dryomov if (!req) 3856922dab61SIlya Dryomov return -ENOMEM; 3857922dab61SIlya Dryomov 3858922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 3859922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 386054ea0046SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE; 38611134e091SDeepa Dinamani ktime_get_real_ts(&req->r_mtime); 3862922dab61SIlya Dryomov osd_req_op_watch_init(req, 0, lreq->linger_id, 3863922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_UNWATCH); 3864922dab61SIlya Dryomov 3865922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 3866922dab61SIlya Dryomov if (ret) 3867922dab61SIlya Dryomov goto out_put_req; 3868922dab61SIlya Dryomov 3869922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 3870922dab61SIlya Dryomov linger_cancel(lreq); 3871922dab61SIlya Dryomov linger_put(lreq); 3872922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 3873922dab61SIlya Dryomov 3874922dab61SIlya Dryomov out_put_req: 3875922dab61SIlya Dryomov ceph_osdc_put_request(req); 3876922dab61SIlya Dryomov return ret; 3877922dab61SIlya Dryomov } 3878922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 3879922dab61SIlya Dryomov 3880922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 3881922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 3882922dab61SIlya Dryomov size_t payload_len) 3883922dab61SIlya Dryomov { 3884922dab61SIlya Dryomov struct ceph_osd_req_op *op; 3885922dab61SIlya Dryomov struct ceph_pagelist *pl; 3886922dab61SIlya Dryomov int ret; 3887922dab61SIlya Dryomov 3888922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 3889922dab61SIlya Dryomov 3890922dab61SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 3891922dab61SIlya Dryomov if (!pl) 3892922dab61SIlya Dryomov return -ENOMEM; 3893922dab61SIlya Dryomov 3894922dab61SIlya Dryomov ceph_pagelist_init(pl); 3895922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 3896922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 3897922dab61SIlya Dryomov if (payload) { 3898922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 3899922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 3900922dab61SIlya Dryomov } else { 3901922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 3902922dab61SIlya Dryomov } 3903922dab61SIlya Dryomov if (ret) { 3904922dab61SIlya Dryomov ceph_pagelist_release(pl); 3905922dab61SIlya Dryomov return -ENOMEM; 3906922dab61SIlya Dryomov } 3907922dab61SIlya Dryomov 3908922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 3909922dab61SIlya Dryomov op->indata_len = pl->length; 3910922dab61SIlya Dryomov return 0; 3911922dab61SIlya Dryomov } 3912922dab61SIlya Dryomov 3913922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 3914922dab61SIlya Dryomov struct ceph_object_id *oid, 3915922dab61SIlya Dryomov struct ceph_object_locator *oloc, 3916922dab61SIlya Dryomov u64 notify_id, 3917922dab61SIlya Dryomov u64 cookie, 3918922dab61SIlya Dryomov void *payload, 3919922dab61SIlya Dryomov size_t payload_len) 3920922dab61SIlya Dryomov { 3921922dab61SIlya Dryomov struct ceph_osd_request *req; 3922922dab61SIlya Dryomov int ret; 3923922dab61SIlya Dryomov 3924922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 3925922dab61SIlya Dryomov if (!req) 3926922dab61SIlya Dryomov return -ENOMEM; 3927922dab61SIlya Dryomov 3928922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 3929922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 3930922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 3931922dab61SIlya Dryomov 3932922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 3933922dab61SIlya Dryomov if (ret) 3934922dab61SIlya Dryomov goto out_put_req; 3935922dab61SIlya Dryomov 3936922dab61SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 3937922dab61SIlya Dryomov payload_len); 3938922dab61SIlya Dryomov if (ret) 3939922dab61SIlya Dryomov goto out_put_req; 3940922dab61SIlya Dryomov 3941922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 3942922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 3943922dab61SIlya Dryomov 3944922dab61SIlya Dryomov out_put_req: 3945922dab61SIlya Dryomov ceph_osdc_put_request(req); 3946922dab61SIlya Dryomov return ret; 3947922dab61SIlya Dryomov } 3948922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 3949922dab61SIlya Dryomov 395019079203SIlya Dryomov static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, 395119079203SIlya Dryomov u64 cookie, u32 prot_ver, u32 timeout, 395219079203SIlya Dryomov void *payload, size_t payload_len) 395319079203SIlya Dryomov { 395419079203SIlya Dryomov struct ceph_osd_req_op *op; 395519079203SIlya Dryomov struct ceph_pagelist *pl; 395619079203SIlya Dryomov int ret; 395719079203SIlya Dryomov 395819079203SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); 395919079203SIlya Dryomov op->notify.cookie = cookie; 396019079203SIlya Dryomov 396119079203SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 396219079203SIlya Dryomov if (!pl) 396319079203SIlya Dryomov return -ENOMEM; 396419079203SIlya Dryomov 396519079203SIlya Dryomov ceph_pagelist_init(pl); 396619079203SIlya Dryomov ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ 396719079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, timeout); 396819079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 396919079203SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 397019079203SIlya Dryomov if (ret) { 397119079203SIlya Dryomov ceph_pagelist_release(pl); 397219079203SIlya Dryomov return -ENOMEM; 397319079203SIlya Dryomov } 397419079203SIlya Dryomov 397519079203SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify.request_data, pl); 397619079203SIlya Dryomov op->indata_len = pl->length; 397719079203SIlya Dryomov return 0; 397819079203SIlya Dryomov } 397919079203SIlya Dryomov 398019079203SIlya Dryomov /* 398119079203SIlya Dryomov * @timeout: in seconds 398219079203SIlya Dryomov * 398319079203SIlya Dryomov * @preply_{pages,len} are initialized both on success and error. 398419079203SIlya Dryomov * The caller is responsible for: 398519079203SIlya Dryomov * 398619079203SIlya Dryomov * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) 398719079203SIlya Dryomov */ 398819079203SIlya Dryomov int ceph_osdc_notify(struct ceph_osd_client *osdc, 398919079203SIlya Dryomov struct ceph_object_id *oid, 399019079203SIlya Dryomov struct ceph_object_locator *oloc, 399119079203SIlya Dryomov void *payload, 399219079203SIlya Dryomov size_t payload_len, 399319079203SIlya Dryomov u32 timeout, 399419079203SIlya Dryomov struct page ***preply_pages, 399519079203SIlya Dryomov size_t *preply_len) 399619079203SIlya Dryomov { 399719079203SIlya Dryomov struct ceph_osd_linger_request *lreq; 399819079203SIlya Dryomov struct page **pages; 399919079203SIlya Dryomov int ret; 400019079203SIlya Dryomov 400119079203SIlya Dryomov WARN_ON(!timeout); 400219079203SIlya Dryomov if (preply_pages) { 400319079203SIlya Dryomov *preply_pages = NULL; 400419079203SIlya Dryomov *preply_len = 0; 400519079203SIlya Dryomov } 400619079203SIlya Dryomov 400719079203SIlya Dryomov lreq = linger_alloc(osdc); 400819079203SIlya Dryomov if (!lreq) 400919079203SIlya Dryomov return -ENOMEM; 401019079203SIlya Dryomov 401119079203SIlya Dryomov lreq->preply_pages = preply_pages; 401219079203SIlya Dryomov lreq->preply_len = preply_len; 401319079203SIlya Dryomov 401419079203SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 401519079203SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 401619079203SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_READ; 401719079203SIlya Dryomov 401819079203SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 401919079203SIlya Dryomov if (!lreq->reg_req) { 402019079203SIlya Dryomov ret = -ENOMEM; 402119079203SIlya Dryomov goto out_put_lreq; 402219079203SIlya Dryomov } 402319079203SIlya Dryomov 402419079203SIlya Dryomov /* for notify_id */ 402519079203SIlya Dryomov pages = ceph_alloc_page_vector(1, GFP_NOIO); 402619079203SIlya Dryomov if (IS_ERR(pages)) { 402719079203SIlya Dryomov ret = PTR_ERR(pages); 402819079203SIlya Dryomov goto out_put_lreq; 402919079203SIlya Dryomov } 403019079203SIlya Dryomov 403119079203SIlya Dryomov down_write(&osdc->lock); 403219079203SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 403319079203SIlya Dryomov ret = osd_req_op_notify_init(lreq->reg_req, 0, lreq->linger_id, 1, 403419079203SIlya Dryomov timeout, payload, payload_len); 403519079203SIlya Dryomov if (ret) { 403619079203SIlya Dryomov linger_unregister(lreq); 403719079203SIlya Dryomov up_write(&osdc->lock); 403819079203SIlya Dryomov ceph_release_page_vector(pages, 1); 403919079203SIlya Dryomov goto out_put_lreq; 404019079203SIlya Dryomov } 404119079203SIlya Dryomov ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, 404219079203SIlya Dryomov response_data), 404319079203SIlya Dryomov pages, PAGE_SIZE, 0, false, true); 404419079203SIlya Dryomov linger_submit(lreq); 404519079203SIlya Dryomov up_write(&osdc->lock); 404619079203SIlya Dryomov 404719079203SIlya Dryomov ret = linger_reg_commit_wait(lreq); 404819079203SIlya Dryomov if (!ret) 404919079203SIlya Dryomov ret = linger_notify_finish_wait(lreq); 405019079203SIlya Dryomov else 405119079203SIlya Dryomov dout("lreq %p failed to initiate notify %d\n", lreq, ret); 405219079203SIlya Dryomov 405319079203SIlya Dryomov linger_cancel(lreq); 405419079203SIlya Dryomov out_put_lreq: 405519079203SIlya Dryomov linger_put(lreq); 405619079203SIlya Dryomov return ret; 405719079203SIlya Dryomov } 405819079203SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify); 405919079203SIlya Dryomov 40603d14c5d2SYehuda Sadeh /* 4061b07d3c4bSIlya Dryomov * Return the number of milliseconds since the watch was last 4062b07d3c4bSIlya Dryomov * confirmed, or an error. If there is an error, the watch is no 4063b07d3c4bSIlya Dryomov * longer valid, and should be destroyed with ceph_osdc_unwatch(). 4064b07d3c4bSIlya Dryomov */ 4065b07d3c4bSIlya Dryomov int ceph_osdc_watch_check(struct ceph_osd_client *osdc, 4066b07d3c4bSIlya Dryomov struct ceph_osd_linger_request *lreq) 4067b07d3c4bSIlya Dryomov { 4068b07d3c4bSIlya Dryomov unsigned long stamp, age; 4069b07d3c4bSIlya Dryomov int ret; 4070b07d3c4bSIlya Dryomov 4071b07d3c4bSIlya Dryomov down_read(&osdc->lock); 4072b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 4073b07d3c4bSIlya Dryomov stamp = lreq->watch_valid_thru; 4074b07d3c4bSIlya Dryomov if (!list_empty(&lreq->pending_lworks)) { 4075b07d3c4bSIlya Dryomov struct linger_work *lwork = 4076b07d3c4bSIlya Dryomov list_first_entry(&lreq->pending_lworks, 4077b07d3c4bSIlya Dryomov struct linger_work, 4078b07d3c4bSIlya Dryomov pending_item); 4079b07d3c4bSIlya Dryomov 4080b07d3c4bSIlya Dryomov if (time_before(lwork->queued_stamp, stamp)) 4081b07d3c4bSIlya Dryomov stamp = lwork->queued_stamp; 4082b07d3c4bSIlya Dryomov } 4083b07d3c4bSIlya Dryomov age = jiffies - stamp; 4084b07d3c4bSIlya Dryomov dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, 4085b07d3c4bSIlya Dryomov lreq, lreq->linger_id, age, lreq->last_error); 4086b07d3c4bSIlya Dryomov /* we are truncating to msecs, so return a safe upper bound */ 4087b07d3c4bSIlya Dryomov ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); 4088b07d3c4bSIlya Dryomov 4089b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 4090b07d3c4bSIlya Dryomov up_read(&osdc->lock); 4091b07d3c4bSIlya Dryomov return ret; 4092b07d3c4bSIlya Dryomov } 4093b07d3c4bSIlya Dryomov 4094a4ed38d7SDouglas Fuller static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) 4095a4ed38d7SDouglas Fuller { 4096a4ed38d7SDouglas Fuller u8 struct_v; 4097a4ed38d7SDouglas Fuller u32 struct_len; 4098a4ed38d7SDouglas Fuller int ret; 4099a4ed38d7SDouglas Fuller 4100a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 2, "watch_item_t", 4101a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4102a4ed38d7SDouglas Fuller if (ret) 4103a4ed38d7SDouglas Fuller return ret; 4104a4ed38d7SDouglas Fuller 4105a4ed38d7SDouglas Fuller ceph_decode_copy(p, &item->name, sizeof(item->name)); 4106a4ed38d7SDouglas Fuller item->cookie = ceph_decode_64(p); 4107a4ed38d7SDouglas Fuller *p += 4; /* skip timeout_seconds */ 4108a4ed38d7SDouglas Fuller if (struct_v >= 2) { 4109a4ed38d7SDouglas Fuller ceph_decode_copy(p, &item->addr, sizeof(item->addr)); 4110a4ed38d7SDouglas Fuller ceph_decode_addr(&item->addr); 4111a4ed38d7SDouglas Fuller } 4112a4ed38d7SDouglas Fuller 4113a4ed38d7SDouglas Fuller dout("%s %s%llu cookie %llu addr %s\n", __func__, 4114a4ed38d7SDouglas Fuller ENTITY_NAME(item->name), item->cookie, 4115a4ed38d7SDouglas Fuller ceph_pr_addr(&item->addr.in_addr)); 4116a4ed38d7SDouglas Fuller return 0; 4117a4ed38d7SDouglas Fuller } 4118a4ed38d7SDouglas Fuller 4119a4ed38d7SDouglas Fuller static int decode_watchers(void **p, void *end, 4120a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4121a4ed38d7SDouglas Fuller u32 *num_watchers) 4122a4ed38d7SDouglas Fuller { 4123a4ed38d7SDouglas Fuller u8 struct_v; 4124a4ed38d7SDouglas Fuller u32 struct_len; 4125a4ed38d7SDouglas Fuller int i; 4126a4ed38d7SDouglas Fuller int ret; 4127a4ed38d7SDouglas Fuller 4128a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t", 4129a4ed38d7SDouglas Fuller &struct_v, &struct_len); 4130a4ed38d7SDouglas Fuller if (ret) 4131a4ed38d7SDouglas Fuller return ret; 4132a4ed38d7SDouglas Fuller 4133a4ed38d7SDouglas Fuller *num_watchers = ceph_decode_32(p); 4134a4ed38d7SDouglas Fuller *watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO); 4135a4ed38d7SDouglas Fuller if (!*watchers) 4136a4ed38d7SDouglas Fuller return -ENOMEM; 4137a4ed38d7SDouglas Fuller 4138a4ed38d7SDouglas Fuller for (i = 0; i < *num_watchers; i++) { 4139a4ed38d7SDouglas Fuller ret = decode_watcher(p, end, *watchers + i); 4140a4ed38d7SDouglas Fuller if (ret) { 4141a4ed38d7SDouglas Fuller kfree(*watchers); 4142a4ed38d7SDouglas Fuller return ret; 4143a4ed38d7SDouglas Fuller } 4144a4ed38d7SDouglas Fuller } 4145a4ed38d7SDouglas Fuller 4146a4ed38d7SDouglas Fuller return 0; 4147a4ed38d7SDouglas Fuller } 4148a4ed38d7SDouglas Fuller 4149a4ed38d7SDouglas Fuller /* 4150a4ed38d7SDouglas Fuller * On success, the caller is responsible for: 4151a4ed38d7SDouglas Fuller * 4152a4ed38d7SDouglas Fuller * kfree(watchers); 4153a4ed38d7SDouglas Fuller */ 4154a4ed38d7SDouglas Fuller int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, 4155a4ed38d7SDouglas Fuller struct ceph_object_id *oid, 4156a4ed38d7SDouglas Fuller struct ceph_object_locator *oloc, 4157a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 4158a4ed38d7SDouglas Fuller u32 *num_watchers) 4159a4ed38d7SDouglas Fuller { 4160a4ed38d7SDouglas Fuller struct ceph_osd_request *req; 4161a4ed38d7SDouglas Fuller struct page **pages; 4162a4ed38d7SDouglas Fuller int ret; 4163a4ed38d7SDouglas Fuller 4164a4ed38d7SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4165a4ed38d7SDouglas Fuller if (!req) 4166a4ed38d7SDouglas Fuller return -ENOMEM; 4167a4ed38d7SDouglas Fuller 4168a4ed38d7SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 4169a4ed38d7SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 4170a4ed38d7SDouglas Fuller req->r_flags = CEPH_OSD_FLAG_READ; 4171a4ed38d7SDouglas Fuller 4172a4ed38d7SDouglas Fuller ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4173a4ed38d7SDouglas Fuller if (ret) 4174a4ed38d7SDouglas Fuller goto out_put_req; 4175a4ed38d7SDouglas Fuller 4176a4ed38d7SDouglas Fuller pages = ceph_alloc_page_vector(1, GFP_NOIO); 4177a4ed38d7SDouglas Fuller if (IS_ERR(pages)) { 4178a4ed38d7SDouglas Fuller ret = PTR_ERR(pages); 4179a4ed38d7SDouglas Fuller goto out_put_req; 4180a4ed38d7SDouglas Fuller } 4181a4ed38d7SDouglas Fuller 4182a4ed38d7SDouglas Fuller osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0); 4183a4ed38d7SDouglas Fuller ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers, 4184a4ed38d7SDouglas Fuller response_data), 4185a4ed38d7SDouglas Fuller pages, PAGE_SIZE, 0, false, true); 4186a4ed38d7SDouglas Fuller 4187a4ed38d7SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 4188a4ed38d7SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 4189a4ed38d7SDouglas Fuller if (ret >= 0) { 4190a4ed38d7SDouglas Fuller void *p = page_address(pages[0]); 4191a4ed38d7SDouglas Fuller void *const end = p + req->r_ops[0].outdata_len; 4192a4ed38d7SDouglas Fuller 4193a4ed38d7SDouglas Fuller ret = decode_watchers(&p, end, watchers, num_watchers); 4194a4ed38d7SDouglas Fuller } 4195a4ed38d7SDouglas Fuller 4196a4ed38d7SDouglas Fuller out_put_req: 4197a4ed38d7SDouglas Fuller ceph_osdc_put_request(req); 4198a4ed38d7SDouglas Fuller return ret; 4199a4ed38d7SDouglas Fuller } 4200a4ed38d7SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_list_watchers); 4201a4ed38d7SDouglas Fuller 4202b07d3c4bSIlya Dryomov /* 4203dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 4204dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 4205dd935f44SJosh Durgin */ 4206f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 4207dd935f44SJosh Durgin { 420899d16943SIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 4209dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 4210dd935f44SJosh Durgin } 4211dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 4212dd935f44SJosh Durgin 42137cca78c9SIlya Dryomov void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) 42147cca78c9SIlya Dryomov { 42157cca78c9SIlya Dryomov down_read(&osdc->lock); 42167cca78c9SIlya Dryomov maybe_request_map(osdc); 42177cca78c9SIlya Dryomov up_read(&osdc->lock); 42187cca78c9SIlya Dryomov } 42197cca78c9SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_maybe_request_map); 4220dd935f44SJosh Durgin 4221dd935f44SJosh Durgin /* 4222428a7158SDouglas Fuller * Execute an OSD class method on an object. 4223428a7158SDouglas Fuller * 4224428a7158SDouglas Fuller * @flags: CEPH_OSD_FLAG_* 42252544a020SIlya Dryomov * @resp_len: in/out param for reply length 4226428a7158SDouglas Fuller */ 4227428a7158SDouglas Fuller int ceph_osdc_call(struct ceph_osd_client *osdc, 4228428a7158SDouglas Fuller struct ceph_object_id *oid, 4229428a7158SDouglas Fuller struct ceph_object_locator *oloc, 4230428a7158SDouglas Fuller const char *class, const char *method, 4231428a7158SDouglas Fuller unsigned int flags, 4232428a7158SDouglas Fuller struct page *req_page, size_t req_len, 4233428a7158SDouglas Fuller struct page *resp_page, size_t *resp_len) 4234428a7158SDouglas Fuller { 4235428a7158SDouglas Fuller struct ceph_osd_request *req; 4236428a7158SDouglas Fuller int ret; 4237428a7158SDouglas Fuller 42382544a020SIlya Dryomov if (req_len > PAGE_SIZE || (resp_page && *resp_len > PAGE_SIZE)) 42392544a020SIlya Dryomov return -E2BIG; 42402544a020SIlya Dryomov 4241428a7158SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4242428a7158SDouglas Fuller if (!req) 4243428a7158SDouglas Fuller return -ENOMEM; 4244428a7158SDouglas Fuller 4245428a7158SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 4246428a7158SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 4247428a7158SDouglas Fuller req->r_flags = flags; 4248428a7158SDouglas Fuller 4249428a7158SDouglas Fuller ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4250428a7158SDouglas Fuller if (ret) 4251428a7158SDouglas Fuller goto out_put_req; 4252428a7158SDouglas Fuller 4253428a7158SDouglas Fuller osd_req_op_cls_init(req, 0, CEPH_OSD_OP_CALL, class, method); 4254428a7158SDouglas Fuller if (req_page) 4255428a7158SDouglas Fuller osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len, 4256428a7158SDouglas Fuller 0, false, false); 4257428a7158SDouglas Fuller if (resp_page) 4258428a7158SDouglas Fuller osd_req_op_cls_response_data_pages(req, 0, &resp_page, 42592544a020SIlya Dryomov *resp_len, 0, false, false); 4260428a7158SDouglas Fuller 4261428a7158SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 4262428a7158SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 4263428a7158SDouglas Fuller if (ret >= 0) { 4264428a7158SDouglas Fuller ret = req->r_ops[0].rval; 4265428a7158SDouglas Fuller if (resp_page) 4266428a7158SDouglas Fuller *resp_len = req->r_ops[0].outdata_len; 4267428a7158SDouglas Fuller } 4268428a7158SDouglas Fuller 4269428a7158SDouglas Fuller out_put_req: 4270428a7158SDouglas Fuller ceph_osdc_put_request(req); 4271428a7158SDouglas Fuller return ret; 4272428a7158SDouglas Fuller } 4273428a7158SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_call); 4274428a7158SDouglas Fuller 4275428a7158SDouglas Fuller /* 42763d14c5d2SYehuda Sadeh * init, shutdown 42773d14c5d2SYehuda Sadeh */ 42783d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 42793d14c5d2SYehuda Sadeh { 42803d14c5d2SYehuda Sadeh int err; 42813d14c5d2SYehuda Sadeh 42823d14c5d2SYehuda Sadeh dout("init\n"); 42833d14c5d2SYehuda Sadeh osdc->client = client; 42845aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 42853d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 42863d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 42879dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 42885aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 42895aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 42905aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 4291264048afSIlya Dryomov osdc->last_linger_id = CEPH_LINGER_ID_START; 4292922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 42934609245eSIlya Dryomov osdc->map_checks = RB_ROOT; 42944609245eSIlya Dryomov osdc->linger_map_checks = RB_ROOT; 42953d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 42963d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 42973d14c5d2SYehuda Sadeh 42983d14c5d2SYehuda Sadeh err = -ENOMEM; 4299e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 4300e5253a7bSIlya Dryomov if (!osdc->osdmap) 4301e5253a7bSIlya Dryomov goto out; 4302e5253a7bSIlya Dryomov 43039e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 43049e767adbSIlya Dryomov ceph_osd_request_cache); 43053d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 4306e5253a7bSIlya Dryomov goto out_map; 43073d14c5d2SYehuda Sadeh 4308d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 4309711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 43103d14c5d2SYehuda Sadeh if (err < 0) 43113d14c5d2SYehuda Sadeh goto out_mempool; 4312d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 4313711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 43143d14c5d2SYehuda Sadeh if (err < 0) 43153d14c5d2SYehuda Sadeh goto out_msgpool; 4316a40c4f10SYehuda Sadeh 4317dbcae088SDan Carpenter err = -ENOMEM; 4318a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 4319dbcae088SDan Carpenter if (!osdc->notify_wq) 4320c172ec5cSIlya Dryomov goto out_msgpool_reply; 4321c172ec5cSIlya Dryomov 4322fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 4323fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 4324b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 4325b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 4326b37ee1b9SIlya Dryomov 43273d14c5d2SYehuda Sadeh return 0; 43283d14c5d2SYehuda Sadeh 4329c172ec5cSIlya Dryomov out_msgpool_reply: 4330c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 43313d14c5d2SYehuda Sadeh out_msgpool: 43323d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 43333d14c5d2SYehuda Sadeh out_mempool: 43343d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 4335e5253a7bSIlya Dryomov out_map: 4336e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 43373d14c5d2SYehuda Sadeh out: 43383d14c5d2SYehuda Sadeh return err; 43393d14c5d2SYehuda Sadeh } 43403d14c5d2SYehuda Sadeh 43413d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 43423d14c5d2SYehuda Sadeh { 4343a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 4344a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 43453d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 43463d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 434742a2c09fSIlya Dryomov 43485aea3dcdSIlya Dryomov down_write(&osdc->lock); 434942a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 435042a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 435142a2c09fSIlya Dryomov struct ceph_osd, o_node); 43525aea3dcdSIlya Dryomov close_osd(osd); 435342a2c09fSIlya Dryomov } 43545aea3dcdSIlya Dryomov up_write(&osdc->lock); 435502113a0fSElena Reshetova WARN_ON(refcount_read(&osdc->homeless_osd.o_ref) != 1); 43565aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 43575aea3dcdSIlya Dryomov 43585aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 4359922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 43604609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); 43614609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); 43625aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 43635aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 436442a2c09fSIlya Dryomov 43653d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 43663d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 43673d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 43683d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 43693d14c5d2SYehuda Sadeh } 43703d14c5d2SYehuda Sadeh 43713d14c5d2SYehuda Sadeh /* 43723d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 43733d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 43743d14c5d2SYehuda Sadeh */ 43753d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 43763d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 43773d14c5d2SYehuda Sadeh u64 off, u64 *plen, 43783d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 4379b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 43803d14c5d2SYehuda Sadeh { 43813d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 43823d14c5d2SYehuda Sadeh int rc = 0; 43833d14c5d2SYehuda Sadeh 43843d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 43853d14c5d2SYehuda Sadeh vino.snap, off, *plen); 4386715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 43873d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 4388acead002SAlex Elder NULL, truncate_seq, truncate_size, 4389153e5167SAlex Elder false); 43906816282dSSage Weil if (IS_ERR(req)) 43916816282dSSage Weil return PTR_ERR(req); 43923d14c5d2SYehuda Sadeh 43933d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 4394406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 4395a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 43963d14c5d2SYehuda Sadeh 4397e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 439843bfe5deSAlex Elder off, *plen, *plen, page_align); 43993d14c5d2SYehuda Sadeh 44003d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 44013d14c5d2SYehuda Sadeh if (!rc) 44023d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 44033d14c5d2SYehuda Sadeh 44043d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 44053d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 44063d14c5d2SYehuda Sadeh return rc; 44073d14c5d2SYehuda Sadeh } 44083d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 44093d14c5d2SYehuda Sadeh 44103d14c5d2SYehuda Sadeh /* 44113d14c5d2SYehuda Sadeh * do a synchronous write on N pages 44123d14c5d2SYehuda Sadeh */ 44133d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 44143d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 44153d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 44163d14c5d2SYehuda Sadeh u64 off, u64 len, 44173d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 44183d14c5d2SYehuda Sadeh struct timespec *mtime, 441924808826SAlex Elder struct page **pages, int num_pages) 44203d14c5d2SYehuda Sadeh { 44213d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 44223d14c5d2SYehuda Sadeh int rc = 0; 4423b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 44243d14c5d2SYehuda Sadeh 4425715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 442654ea0046SIlya Dryomov CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE, 4427acead002SAlex Elder snapc, truncate_seq, truncate_size, 4428153e5167SAlex Elder true); 44296816282dSSage Weil if (IS_ERR(req)) 44306816282dSSage Weil return PTR_ERR(req); 44313d14c5d2SYehuda Sadeh 44323d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 4433406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 443443bfe5deSAlex Elder false, false); 443543bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 44363d14c5d2SYehuda Sadeh 4437bb873b53SIlya Dryomov req->r_mtime = *mtime; 443887f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 44393d14c5d2SYehuda Sadeh if (!rc) 44403d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 44413d14c5d2SYehuda Sadeh 44423d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 44433d14c5d2SYehuda Sadeh if (rc == 0) 44443d14c5d2SYehuda Sadeh rc = len; 44453d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 44463d14c5d2SYehuda Sadeh return rc; 44473d14c5d2SYehuda Sadeh } 44483d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 44493d14c5d2SYehuda Sadeh 44505522ae0bSAlex Elder int ceph_osdc_setup(void) 44515522ae0bSAlex Elder { 44523f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 44533f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 44543f1af42aSIlya Dryomov 44555522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 44563f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 44573f1af42aSIlya Dryomov 0, 0, NULL); 44585522ae0bSAlex Elder 44595522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 44605522ae0bSAlex Elder } 44615522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 44625522ae0bSAlex Elder 44635522ae0bSAlex Elder void ceph_osdc_cleanup(void) 44645522ae0bSAlex Elder { 44655522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 44665522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 44675522ae0bSAlex Elder ceph_osd_request_cache = NULL; 44685522ae0bSAlex Elder } 44695522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 44705522ae0bSAlex Elder 44713d14c5d2SYehuda Sadeh /* 44723d14c5d2SYehuda Sadeh * handle incoming message 44733d14c5d2SYehuda Sadeh */ 44743d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 44753d14c5d2SYehuda Sadeh { 44763d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 44775aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 44783d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 44793d14c5d2SYehuda Sadeh 44803d14c5d2SYehuda Sadeh switch (type) { 44813d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 44823d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 44833d14c5d2SYehuda Sadeh break; 44843d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 44855aea3dcdSIlya Dryomov handle_reply(osd, msg); 44863d14c5d2SYehuda Sadeh break; 4487a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 4488a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 4489a40c4f10SYehuda Sadeh break; 44903d14c5d2SYehuda Sadeh 44913d14c5d2SYehuda Sadeh default: 44923d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 44933d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 44943d14c5d2SYehuda Sadeh } 44955aea3dcdSIlya Dryomov 44963d14c5d2SYehuda Sadeh ceph_msg_put(msg); 44973d14c5d2SYehuda Sadeh } 44983d14c5d2SYehuda Sadeh 44993d14c5d2SYehuda Sadeh /* 4500d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 4501d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 4502d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 45033d14c5d2SYehuda Sadeh */ 45043d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 45053d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 45063d14c5d2SYehuda Sadeh int *skip) 45073d14c5d2SYehuda Sadeh { 45083d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 45093d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 45105aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 45113d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 45123f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 45133d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 45145aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 45153d14c5d2SYehuda Sadeh 45165aea3dcdSIlya Dryomov down_read(&osdc->lock); 45175aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 45185aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 45195aea3dcdSIlya Dryomov *skip = 1; 45205aea3dcdSIlya Dryomov goto out_unlock_osdc; 45215aea3dcdSIlya Dryomov } 45225aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 45235aea3dcdSIlya Dryomov 45245aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 45255aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 45263d14c5d2SYehuda Sadeh if (!req) { 4527cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 4528cd8140c6SIlya Dryomov osd->o_osd, tid); 4529d15f9d69SIlya Dryomov *skip = 1; 45305aea3dcdSIlya Dryomov goto out_unlock_session; 45313d14c5d2SYehuda Sadeh } 45323d14c5d2SYehuda Sadeh 45338921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 45343d14c5d2SYehuda Sadeh 4535f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 4536d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 4537d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 4538d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 45393f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 45403f0a4ac5SIlya Dryomov false); 45413d14c5d2SYehuda Sadeh if (!m) 45425aea3dcdSIlya Dryomov goto out_unlock_session; 45433d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 45443d14c5d2SYehuda Sadeh req->r_reply = m; 45453d14c5d2SYehuda Sadeh } 45463d14c5d2SYehuda Sadeh 4547d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 4548d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 4549d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 4550d15f9d69SIlya Dryomov req->r_reply->data_length); 45513d14c5d2SYehuda Sadeh m = NULL; 4552d15f9d69SIlya Dryomov *skip = 1; 45535aea3dcdSIlya Dryomov goto out_unlock_session; 45543d14c5d2SYehuda Sadeh } 4555d15f9d69SIlya Dryomov 4556d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 45573d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 45583d14c5d2SYehuda Sadeh 45595aea3dcdSIlya Dryomov out_unlock_session: 45605aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 45615aea3dcdSIlya Dryomov out_unlock_osdc: 45625aea3dcdSIlya Dryomov up_read(&osdc->lock); 45633d14c5d2SYehuda Sadeh return m; 45643d14c5d2SYehuda Sadeh } 45653d14c5d2SYehuda Sadeh 456619079203SIlya Dryomov /* 456719079203SIlya Dryomov * TODO: switch to a msg-owned pagelist 456819079203SIlya Dryomov */ 456919079203SIlya Dryomov static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) 457019079203SIlya Dryomov { 457119079203SIlya Dryomov struct ceph_msg *m; 457219079203SIlya Dryomov int type = le16_to_cpu(hdr->type); 457319079203SIlya Dryomov u32 front_len = le32_to_cpu(hdr->front_len); 457419079203SIlya Dryomov u32 data_len = le32_to_cpu(hdr->data_len); 457519079203SIlya Dryomov 457619079203SIlya Dryomov m = ceph_msg_new(type, front_len, GFP_NOIO, false); 457719079203SIlya Dryomov if (!m) 457819079203SIlya Dryomov return NULL; 457919079203SIlya Dryomov 458019079203SIlya Dryomov if (data_len) { 458119079203SIlya Dryomov struct page **pages; 458219079203SIlya Dryomov struct ceph_osd_data osd_data; 458319079203SIlya Dryomov 458419079203SIlya Dryomov pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), 458519079203SIlya Dryomov GFP_NOIO); 4586c22e853aSWei Yongjun if (IS_ERR(pages)) { 458719079203SIlya Dryomov ceph_msg_put(m); 458819079203SIlya Dryomov return NULL; 458919079203SIlya Dryomov } 459019079203SIlya Dryomov 459119079203SIlya Dryomov ceph_osd_data_pages_init(&osd_data, pages, data_len, 0, false, 459219079203SIlya Dryomov false); 459319079203SIlya Dryomov ceph_osdc_msg_data_add(m, &osd_data); 459419079203SIlya Dryomov } 459519079203SIlya Dryomov 459619079203SIlya Dryomov return m; 459719079203SIlya Dryomov } 459819079203SIlya Dryomov 45993d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 46003d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 46013d14c5d2SYehuda Sadeh int *skip) 46023d14c5d2SYehuda Sadeh { 46033d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 46043d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 46053d14c5d2SYehuda Sadeh 46061c20f2d2SAlex Elder *skip = 0; 46073d14c5d2SYehuda Sadeh switch (type) { 46083d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 4609a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 461019079203SIlya Dryomov return alloc_msg_with_page_vector(hdr); 46113d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 46123d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 46133d14c5d2SYehuda Sadeh default: 46145aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 46155aea3dcdSIlya Dryomov osd->o_osd, type); 46163d14c5d2SYehuda Sadeh *skip = 1; 46173d14c5d2SYehuda Sadeh return NULL; 46183d14c5d2SYehuda Sadeh } 46193d14c5d2SYehuda Sadeh } 46203d14c5d2SYehuda Sadeh 46213d14c5d2SYehuda Sadeh /* 46223d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 46233d14c5d2SYehuda Sadeh */ 46243d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 46253d14c5d2SYehuda Sadeh { 46263d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 46273d14c5d2SYehuda Sadeh if (get_osd(osd)) 46283d14c5d2SYehuda Sadeh return con; 46293d14c5d2SYehuda Sadeh return NULL; 46303d14c5d2SYehuda Sadeh } 46313d14c5d2SYehuda Sadeh 46323d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 46333d14c5d2SYehuda Sadeh { 46343d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 46353d14c5d2SYehuda Sadeh put_osd(osd); 46363d14c5d2SYehuda Sadeh } 46373d14c5d2SYehuda Sadeh 46383d14c5d2SYehuda Sadeh /* 46393d14c5d2SYehuda Sadeh * authentication 46403d14c5d2SYehuda Sadeh */ 4641a3530df3SAlex Elder /* 4642a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 4643a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 4644a3530df3SAlex Elder */ 4645a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 46468f43fb53SAlex Elder int *proto, int force_new) 46473d14c5d2SYehuda Sadeh { 46483d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 46493d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 46503d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 465174f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 46523d14c5d2SYehuda Sadeh 465374f1869fSAlex Elder if (force_new && auth->authorizer) { 46546c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 465574f1869fSAlex Elder auth->authorizer = NULL; 46563d14c5d2SYehuda Sadeh } 465727859f97SSage Weil if (!auth->authorizer) { 465827859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 4659a3530df3SAlex Elder auth); 46603d14c5d2SYehuda Sadeh if (ret) 4661a3530df3SAlex Elder return ERR_PTR(ret); 466227859f97SSage Weil } else { 466327859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 46640bed9b5cSSage Weil auth); 46650bed9b5cSSage Weil if (ret) 46660bed9b5cSSage Weil return ERR_PTR(ret); 46673d14c5d2SYehuda Sadeh } 46683d14c5d2SYehuda Sadeh *proto = ac->protocol; 466974f1869fSAlex Elder 4670a3530df3SAlex Elder return auth; 46713d14c5d2SYehuda Sadeh } 46723d14c5d2SYehuda Sadeh 46733d14c5d2SYehuda Sadeh 46740dde5848SIlya Dryomov static int verify_authorizer_reply(struct ceph_connection *con) 46753d14c5d2SYehuda Sadeh { 46763d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 46773d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 46783d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 46793d14c5d2SYehuda Sadeh 46800dde5848SIlya Dryomov return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer); 46813d14c5d2SYehuda Sadeh } 46823d14c5d2SYehuda Sadeh 46833d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 46843d14c5d2SYehuda Sadeh { 46853d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 46863d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 46873d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 46883d14c5d2SYehuda Sadeh 468927859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 46903d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 46913d14c5d2SYehuda Sadeh } 46923d14c5d2SYehuda Sadeh 46938cb441c0SIlya Dryomov static void osd_reencode_message(struct ceph_msg *msg) 46948cb441c0SIlya Dryomov { 46958cb441c0SIlya Dryomov encode_request_finish(msg); 46968cb441c0SIlya Dryomov } 46978cb441c0SIlya Dryomov 469879dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 469933d07337SYan, Zheng { 470079dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 470133d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 470279dbd1baSIlya Dryomov 470333d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 470433d07337SYan, Zheng } 470533d07337SYan, Zheng 470679dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 470733d07337SYan, Zheng { 470879dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 470933d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 471079dbd1baSIlya Dryomov 471133d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 471233d07337SYan, Zheng } 471333d07337SYan, Zheng 47143d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 47153d14c5d2SYehuda Sadeh .get = get_osd_con, 47163d14c5d2SYehuda Sadeh .put = put_osd_con, 47173d14c5d2SYehuda Sadeh .dispatch = dispatch, 47183d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 47193d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 47203d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 47213d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 47228cb441c0SIlya Dryomov .reencode_message = osd_reencode_message, 472379dbd1baSIlya Dryomov .sign_message = osd_sign_message, 472479dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 47255aea3dcdSIlya Dryomov .fault = osd_fault, 47263d14c5d2SYehuda Sadeh }; 4727