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 153d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 163d14c5d2SYehuda Sadeh #include <linux/ceph/osd_client.h> 173d14c5d2SYehuda Sadeh #include <linux/ceph/messenger.h> 183d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 193d14c5d2SYehuda Sadeh #include <linux/ceph/auth.h> 203d14c5d2SYehuda Sadeh #include <linux/ceph/pagelist.h> 213d14c5d2SYehuda Sadeh 223d14c5d2SYehuda Sadeh #define OSD_OPREPLY_FRONT_LEN 512 233d14c5d2SYehuda Sadeh 245522ae0bSAlex Elder static struct kmem_cache *ceph_osd_request_cache; 255522ae0bSAlex Elder 263d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops; 273d14c5d2SYehuda Sadeh 283d14c5d2SYehuda Sadeh /* 293d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 303d14c5d2SYehuda Sadeh * 313d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 323d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 333d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 343d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 353d14c5d2SYehuda Sadeh * access to storage. 363d14c5d2SYehuda Sadeh * 373d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 383d14c5d2SYehuda Sadeh * are described by the osd map. 393d14c5d2SYehuda Sadeh * 403d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 413d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 423d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 433d14c5d2SYehuda Sadeh * channel with an OSD is reset. 443d14c5d2SYehuda Sadeh */ 453d14c5d2SYehuda Sadeh 465aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req); 475aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req); 48922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 49922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq); 50922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 51922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq); 525aea3dcdSIlya Dryomov 535aea3dcdSIlya Dryomov #if 1 545aea3dcdSIlya Dryomov static inline bool rwsem_is_wrlocked(struct rw_semaphore *sem) 555aea3dcdSIlya Dryomov { 565aea3dcdSIlya Dryomov bool wrlocked = true; 575aea3dcdSIlya Dryomov 585aea3dcdSIlya Dryomov if (unlikely(down_read_trylock(sem))) { 595aea3dcdSIlya Dryomov wrlocked = false; 605aea3dcdSIlya Dryomov up_read(sem); 615aea3dcdSIlya Dryomov } 625aea3dcdSIlya Dryomov 635aea3dcdSIlya Dryomov return wrlocked; 645aea3dcdSIlya Dryomov } 655aea3dcdSIlya Dryomov static inline void verify_osdc_locked(struct ceph_osd_client *osdc) 665aea3dcdSIlya Dryomov { 675aea3dcdSIlya Dryomov WARN_ON(!rwsem_is_locked(&osdc->lock)); 685aea3dcdSIlya Dryomov } 695aea3dcdSIlya Dryomov static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) 705aea3dcdSIlya Dryomov { 715aea3dcdSIlya Dryomov WARN_ON(!rwsem_is_wrlocked(&osdc->lock)); 725aea3dcdSIlya Dryomov } 735aea3dcdSIlya Dryomov static inline void verify_osd_locked(struct ceph_osd *osd) 745aea3dcdSIlya Dryomov { 755aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 765aea3dcdSIlya Dryomov 775aea3dcdSIlya Dryomov WARN_ON(!(mutex_is_locked(&osd->lock) && 785aea3dcdSIlya Dryomov rwsem_is_locked(&osdc->lock)) && 795aea3dcdSIlya Dryomov !rwsem_is_wrlocked(&osdc->lock)); 805aea3dcdSIlya Dryomov } 81922dab61SIlya Dryomov static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) 82922dab61SIlya Dryomov { 83922dab61SIlya Dryomov WARN_ON(!mutex_is_locked(&lreq->lock)); 84922dab61SIlya Dryomov } 855aea3dcdSIlya Dryomov #else 865aea3dcdSIlya Dryomov static inline void verify_osdc_locked(struct ceph_osd_client *osdc) { } 875aea3dcdSIlya Dryomov static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) { } 885aea3dcdSIlya Dryomov static inline void verify_osd_locked(struct ceph_osd *osd) { } 89922dab61SIlya Dryomov static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) { } 905aea3dcdSIlya Dryomov #endif 915aea3dcdSIlya Dryomov 923d14c5d2SYehuda Sadeh /* 933d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 943d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 953d14c5d2SYehuda Sadeh * object boundary. 963d14c5d2SYehuda Sadeh * 973d14c5d2SYehuda Sadeh * fill osd op in request message. 983d14c5d2SYehuda Sadeh */ 99dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 100a19dadfbSAlex Elder u64 *objnum, u64 *objoff, u64 *objlen) 1013d14c5d2SYehuda Sadeh { 10260e56f13SAlex Elder u64 orig_len = *plen; 103d63b77f4SSage Weil int r; 1043d14c5d2SYehuda Sadeh 10560e56f13SAlex Elder /* object extent? */ 10675d1c941SAlex Elder r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, 10775d1c941SAlex Elder objoff, objlen); 108d63b77f4SSage Weil if (r < 0) 109d63b77f4SSage Weil return r; 11075d1c941SAlex Elder if (*objlen < orig_len) { 11175d1c941SAlex Elder *plen = *objlen; 11260e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 11360e56f13SAlex Elder orig_len - *plen, off, *plen); 11460e56f13SAlex Elder } 11560e56f13SAlex Elder 11675d1c941SAlex Elder dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); 1173d14c5d2SYehuda Sadeh 1183ff5f385SAlex Elder return 0; 1193d14c5d2SYehuda Sadeh } 1203d14c5d2SYehuda Sadeh 121c54d47bfSAlex Elder static void ceph_osd_data_init(struct ceph_osd_data *osd_data) 122c54d47bfSAlex Elder { 123c54d47bfSAlex Elder memset(osd_data, 0, sizeof (*osd_data)); 124c54d47bfSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_NONE; 125c54d47bfSAlex Elder } 126c54d47bfSAlex Elder 127a4ce40a9SAlex Elder static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, 12843bfe5deSAlex Elder struct page **pages, u64 length, u32 alignment, 12943bfe5deSAlex Elder bool pages_from_pool, bool own_pages) 13043bfe5deSAlex Elder { 13143bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 13243bfe5deSAlex Elder osd_data->pages = pages; 13343bfe5deSAlex Elder osd_data->length = length; 13443bfe5deSAlex Elder osd_data->alignment = alignment; 13543bfe5deSAlex Elder osd_data->pages_from_pool = pages_from_pool; 13643bfe5deSAlex Elder osd_data->own_pages = own_pages; 13743bfe5deSAlex Elder } 13843bfe5deSAlex Elder 139a4ce40a9SAlex Elder static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, 14043bfe5deSAlex Elder struct ceph_pagelist *pagelist) 14143bfe5deSAlex Elder { 14243bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; 14343bfe5deSAlex Elder osd_data->pagelist = pagelist; 14443bfe5deSAlex Elder } 14543bfe5deSAlex Elder 14643bfe5deSAlex Elder #ifdef CONFIG_BLOCK 147a4ce40a9SAlex Elder static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 14843bfe5deSAlex Elder struct bio *bio, size_t bio_length) 14943bfe5deSAlex Elder { 15043bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_BIO; 15143bfe5deSAlex Elder osd_data->bio = bio; 15243bfe5deSAlex Elder osd_data->bio_length = bio_length; 15343bfe5deSAlex Elder } 15443bfe5deSAlex Elder #endif /* CONFIG_BLOCK */ 15543bfe5deSAlex Elder 156863c7eb5SAlex Elder #define osd_req_op_data(oreq, whch, typ, fld) \ 157863c7eb5SAlex Elder ({ \ 1588a703a38SIoana Ciornei struct ceph_osd_request *__oreq = (oreq); \ 1598a703a38SIoana Ciornei unsigned int __whch = (whch); \ 1608a703a38SIoana Ciornei BUG_ON(__whch >= __oreq->r_num_ops); \ 1618a703a38SIoana Ciornei &__oreq->r_ops[__whch].typ.fld; \ 162863c7eb5SAlex Elder }) 163863c7eb5SAlex Elder 16449719778SAlex Elder static struct ceph_osd_data * 16549719778SAlex Elder osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) 16649719778SAlex Elder { 16749719778SAlex Elder BUG_ON(which >= osd_req->r_num_ops); 16849719778SAlex Elder 16949719778SAlex Elder return &osd_req->r_ops[which].raw_data_in; 17049719778SAlex Elder } 17149719778SAlex Elder 172a4ce40a9SAlex Elder struct ceph_osd_data * 173a4ce40a9SAlex Elder osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, 174406e2c9fSAlex Elder unsigned int which) 175a4ce40a9SAlex Elder { 176863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, extent, osd_data); 177a4ce40a9SAlex Elder } 178a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data); 179a4ce40a9SAlex Elder 18049719778SAlex Elder void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 18149719778SAlex Elder unsigned int which, struct page **pages, 18249719778SAlex Elder u64 length, u32 alignment, 18349719778SAlex Elder bool pages_from_pool, bool own_pages) 18449719778SAlex Elder { 18549719778SAlex Elder struct ceph_osd_data *osd_data; 18649719778SAlex Elder 18749719778SAlex Elder osd_data = osd_req_op_raw_data_in(osd_req, which); 18849719778SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 18949719778SAlex Elder pages_from_pool, own_pages); 19049719778SAlex Elder } 19149719778SAlex Elder EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 19249719778SAlex Elder 193a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 194406e2c9fSAlex Elder unsigned int which, struct page **pages, 195406e2c9fSAlex Elder u64 length, u32 alignment, 196a4ce40a9SAlex Elder bool pages_from_pool, bool own_pages) 197a4ce40a9SAlex Elder { 198a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 199a4ce40a9SAlex Elder 200863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 201a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 202a4ce40a9SAlex Elder pages_from_pool, own_pages); 203a4ce40a9SAlex Elder } 204a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 205a4ce40a9SAlex Elder 206a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 207406e2c9fSAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 208a4ce40a9SAlex Elder { 209a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 210a4ce40a9SAlex Elder 211863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 212a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 213a4ce40a9SAlex Elder } 214a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 215a4ce40a9SAlex Elder 216a4ce40a9SAlex Elder #ifdef CONFIG_BLOCK 217a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 218406e2c9fSAlex Elder unsigned int which, struct bio *bio, size_t bio_length) 219a4ce40a9SAlex Elder { 220a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 221863c7eb5SAlex Elder 222863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 223a4ce40a9SAlex Elder ceph_osd_data_bio_init(osd_data, bio, bio_length); 224a4ce40a9SAlex Elder } 225a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 226a4ce40a9SAlex Elder #endif /* CONFIG_BLOCK */ 227a4ce40a9SAlex Elder 228a4ce40a9SAlex Elder static void osd_req_op_cls_request_info_pagelist( 229a4ce40a9SAlex Elder struct ceph_osd_request *osd_req, 230a4ce40a9SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 231a4ce40a9SAlex Elder { 232a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 233a4ce40a9SAlex Elder 234863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_info); 235a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 236a4ce40a9SAlex Elder } 237a4ce40a9SAlex Elder 23804017e29SAlex Elder void osd_req_op_cls_request_data_pagelist( 23904017e29SAlex Elder struct ceph_osd_request *osd_req, 24004017e29SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 24104017e29SAlex Elder { 24204017e29SAlex Elder struct ceph_osd_data *osd_data; 24304017e29SAlex Elder 244863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 24504017e29SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 246bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += pagelist->length; 247bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += pagelist->length; 24804017e29SAlex Elder } 24904017e29SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 25004017e29SAlex Elder 2516c57b554SAlex Elder void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 2526c57b554SAlex Elder unsigned int which, struct page **pages, u64 length, 2536c57b554SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 2546c57b554SAlex Elder { 2556c57b554SAlex Elder struct ceph_osd_data *osd_data; 2566c57b554SAlex Elder 2576c57b554SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 2586c57b554SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 2596c57b554SAlex Elder pages_from_pool, own_pages); 260bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += length; 261bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += length; 2626c57b554SAlex Elder } 2636c57b554SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 2646c57b554SAlex Elder 265a4ce40a9SAlex Elder void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 266a4ce40a9SAlex Elder unsigned int which, struct page **pages, u64 length, 267a4ce40a9SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 268a4ce40a9SAlex Elder { 269a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 270a4ce40a9SAlex Elder 271863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, response_data); 272a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 273a4ce40a9SAlex Elder pages_from_pool, own_pages); 274a4ce40a9SAlex Elder } 275a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 276a4ce40a9SAlex Elder 27723c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 27823c08a9cSAlex Elder { 27923c08a9cSAlex Elder switch (osd_data->type) { 28023c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 28123c08a9cSAlex Elder return 0; 28223c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 28323c08a9cSAlex Elder return osd_data->length; 28423c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 28523c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 28623c08a9cSAlex Elder #ifdef CONFIG_BLOCK 28723c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 28823c08a9cSAlex Elder return (u64)osd_data->bio_length; 28923c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 29023c08a9cSAlex Elder default: 29123c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 29223c08a9cSAlex Elder return 0; 29323c08a9cSAlex Elder } 29423c08a9cSAlex Elder } 29523c08a9cSAlex Elder 296c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 297c54d47bfSAlex Elder { 2985476492fSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 299c54d47bfSAlex Elder int num_pages; 300c54d47bfSAlex Elder 301c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 302c54d47bfSAlex Elder (u64)osd_data->length); 303c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 304c54d47bfSAlex Elder } 3055476492fSAlex Elder ceph_osd_data_init(osd_data); 3065476492fSAlex Elder } 3075476492fSAlex Elder 3085476492fSAlex Elder static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 3095476492fSAlex Elder unsigned int which) 3105476492fSAlex Elder { 3115476492fSAlex Elder struct ceph_osd_req_op *op; 3125476492fSAlex Elder 3135476492fSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 3145476492fSAlex Elder op = &osd_req->r_ops[which]; 3155476492fSAlex Elder 3165476492fSAlex Elder switch (op->op) { 3175476492fSAlex Elder case CEPH_OSD_OP_READ: 3185476492fSAlex Elder case CEPH_OSD_OP_WRITE: 319e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 3205476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 3215476492fSAlex Elder break; 3225476492fSAlex Elder case CEPH_OSD_OP_CALL: 3235476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 32404017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 3255476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 3265476492fSAlex Elder break; 327d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 328d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 329d74b50beSYan, Zheng ceph_osd_data_release(&op->xattr.osd_data); 330d74b50beSYan, Zheng break; 33166ba609fSYan, Zheng case CEPH_OSD_OP_STAT: 33266ba609fSYan, Zheng ceph_osd_data_release(&op->raw_data_in); 33366ba609fSYan, Zheng break; 334922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 335922dab61SIlya Dryomov ceph_osd_data_release(&op->notify_ack.request_data); 336922dab61SIlya Dryomov break; 33719079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 33819079203SIlya Dryomov ceph_osd_data_release(&op->notify.request_data); 33919079203SIlya Dryomov ceph_osd_data_release(&op->notify.response_data); 34019079203SIlya Dryomov break; 341a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 342a4ed38d7SDouglas Fuller ceph_osd_data_release(&op->list_watchers.response_data); 343a4ed38d7SDouglas Fuller break; 3445476492fSAlex Elder default: 3455476492fSAlex Elder break; 3465476492fSAlex Elder } 347c54d47bfSAlex Elder } 348c54d47bfSAlex Elder 3493d14c5d2SYehuda Sadeh /* 35063244fa1SIlya Dryomov * Assumes @t is zero-initialized. 35163244fa1SIlya Dryomov */ 35263244fa1SIlya Dryomov static void target_init(struct ceph_osd_request_target *t) 35363244fa1SIlya Dryomov { 35463244fa1SIlya Dryomov ceph_oid_init(&t->base_oid); 35563244fa1SIlya Dryomov ceph_oloc_init(&t->base_oloc); 35663244fa1SIlya Dryomov ceph_oid_init(&t->target_oid); 35763244fa1SIlya Dryomov ceph_oloc_init(&t->target_oloc); 35863244fa1SIlya Dryomov 35963244fa1SIlya Dryomov ceph_osds_init(&t->acting); 36063244fa1SIlya Dryomov ceph_osds_init(&t->up); 36163244fa1SIlya Dryomov t->size = -1; 36263244fa1SIlya Dryomov t->min_size = -1; 36363244fa1SIlya Dryomov 36463244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 36563244fa1SIlya Dryomov } 36663244fa1SIlya Dryomov 367922dab61SIlya Dryomov static void target_copy(struct ceph_osd_request_target *dest, 368922dab61SIlya Dryomov const struct ceph_osd_request_target *src) 369922dab61SIlya Dryomov { 370922dab61SIlya Dryomov ceph_oid_copy(&dest->base_oid, &src->base_oid); 371922dab61SIlya Dryomov ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); 372922dab61SIlya Dryomov ceph_oid_copy(&dest->target_oid, &src->target_oid); 373922dab61SIlya Dryomov ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); 374922dab61SIlya Dryomov 375922dab61SIlya Dryomov dest->pgid = src->pgid; /* struct */ 376922dab61SIlya Dryomov dest->pg_num = src->pg_num; 377922dab61SIlya Dryomov dest->pg_num_mask = src->pg_num_mask; 378922dab61SIlya Dryomov ceph_osds_copy(&dest->acting, &src->acting); 379922dab61SIlya Dryomov ceph_osds_copy(&dest->up, &src->up); 380922dab61SIlya Dryomov dest->size = src->size; 381922dab61SIlya Dryomov dest->min_size = src->min_size; 382922dab61SIlya Dryomov dest->sort_bitwise = src->sort_bitwise; 383922dab61SIlya Dryomov 384922dab61SIlya Dryomov dest->flags = src->flags; 385922dab61SIlya Dryomov dest->paused = src->paused; 386922dab61SIlya Dryomov 387922dab61SIlya Dryomov dest->osd = src->osd; 388922dab61SIlya Dryomov } 389922dab61SIlya Dryomov 39063244fa1SIlya Dryomov static void target_destroy(struct ceph_osd_request_target *t) 39163244fa1SIlya Dryomov { 39263244fa1SIlya Dryomov ceph_oid_destroy(&t->base_oid); 39330c156d9SYan, Zheng ceph_oloc_destroy(&t->base_oloc); 39463244fa1SIlya Dryomov ceph_oid_destroy(&t->target_oid); 39530c156d9SYan, Zheng ceph_oloc_destroy(&t->target_oloc); 39663244fa1SIlya Dryomov } 39763244fa1SIlya Dryomov 39863244fa1SIlya Dryomov /* 3993d14c5d2SYehuda Sadeh * requests 4003d14c5d2SYehuda Sadeh */ 4013540bfdbSIlya Dryomov static void request_release_checks(struct ceph_osd_request *req) 4023540bfdbSIlya Dryomov { 4033540bfdbSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 4044609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node)); 4053540bfdbSIlya Dryomov WARN_ON(!list_empty(&req->r_unsafe_item)); 4063540bfdbSIlya Dryomov WARN_ON(req->r_osd); 4073540bfdbSIlya Dryomov } 4083540bfdbSIlya Dryomov 4099e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 4103d14c5d2SYehuda Sadeh { 4119e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 4129e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 4135476492fSAlex Elder unsigned int which; 4143d14c5d2SYehuda Sadeh 4159e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 4169e94af20SIlya Dryomov req->r_request, req->r_reply); 4173540bfdbSIlya Dryomov request_release_checks(req); 4189e94af20SIlya Dryomov 4193d14c5d2SYehuda Sadeh if (req->r_request) 4203d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 4215aea3dcdSIlya Dryomov if (req->r_reply) 422ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 4230fff87ecSAlex Elder 4245476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 4255476492fSAlex Elder osd_req_op_data_release(req, which); 4260fff87ecSAlex Elder 427a66dd383SIlya Dryomov target_destroy(&req->r_t); 4283d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 429d30291b9SIlya Dryomov 4303d14c5d2SYehuda Sadeh if (req->r_mempool) 4313d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 4323f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 4335522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 4343f1af42aSIlya Dryomov else 4353f1af42aSIlya Dryomov kfree(req); 4363d14c5d2SYehuda Sadeh } 4379e94af20SIlya Dryomov 4389e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 4399e94af20SIlya Dryomov { 4409e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 4419e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 4429e94af20SIlya Dryomov kref_get(&req->r_kref); 4439e94af20SIlya Dryomov } 4449e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 4459e94af20SIlya Dryomov 4469e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 4479e94af20SIlya Dryomov { 4483ed97d63SIlya Dryomov if (req) { 4499e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 4509e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 4519e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 4529e94af20SIlya Dryomov } 4533ed97d63SIlya Dryomov } 4549e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 4553d14c5d2SYehuda Sadeh 4563540bfdbSIlya Dryomov static void request_init(struct ceph_osd_request *req) 4573540bfdbSIlya Dryomov { 4583540bfdbSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 4593540bfdbSIlya Dryomov memset(req, 0, sizeof(*req)); 4603540bfdbSIlya Dryomov 4613540bfdbSIlya Dryomov kref_init(&req->r_kref); 4623540bfdbSIlya Dryomov init_completion(&req->r_completion); 463c297eb42SIlya Dryomov init_completion(&req->r_done_completion); 4643540bfdbSIlya Dryomov RB_CLEAR_NODE(&req->r_node); 4654609245eSIlya Dryomov RB_CLEAR_NODE(&req->r_mc_node); 4663540bfdbSIlya Dryomov INIT_LIST_HEAD(&req->r_unsafe_item); 4673540bfdbSIlya Dryomov 4683540bfdbSIlya Dryomov target_init(&req->r_t); 4693540bfdbSIlya Dryomov } 4703540bfdbSIlya Dryomov 471922dab61SIlya Dryomov /* 472922dab61SIlya Dryomov * This is ugly, but it allows us to reuse linger registration and ping 473922dab61SIlya Dryomov * requests, keeping the structure of the code around send_linger{_ping}() 474922dab61SIlya Dryomov * reasonable. Setting up a min_nr=2 mempool for each linger request 475922dab61SIlya Dryomov * and dealing with copying ops (this blasts req only, watch op remains 476922dab61SIlya Dryomov * intact) isn't any better. 477922dab61SIlya Dryomov */ 478922dab61SIlya Dryomov static void request_reinit(struct ceph_osd_request *req) 479922dab61SIlya Dryomov { 480922dab61SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 481922dab61SIlya Dryomov bool mempool = req->r_mempool; 482922dab61SIlya Dryomov unsigned int num_ops = req->r_num_ops; 483922dab61SIlya Dryomov u64 snapid = req->r_snapid; 484922dab61SIlya Dryomov struct ceph_snap_context *snapc = req->r_snapc; 485922dab61SIlya Dryomov bool linger = req->r_linger; 486922dab61SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 487922dab61SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 488922dab61SIlya Dryomov 489922dab61SIlya Dryomov dout("%s req %p\n", __func__, req); 490922dab61SIlya Dryomov WARN_ON(atomic_read(&req->r_kref.refcount) != 1); 491922dab61SIlya Dryomov request_release_checks(req); 492922dab61SIlya Dryomov 493922dab61SIlya Dryomov WARN_ON(atomic_read(&request_msg->kref.refcount) != 1); 494922dab61SIlya Dryomov WARN_ON(atomic_read(&reply_msg->kref.refcount) != 1); 495922dab61SIlya Dryomov target_destroy(&req->r_t); 496922dab61SIlya Dryomov 497922dab61SIlya Dryomov request_init(req); 498922dab61SIlya Dryomov req->r_osdc = osdc; 499922dab61SIlya Dryomov req->r_mempool = mempool; 500922dab61SIlya Dryomov req->r_num_ops = num_ops; 501922dab61SIlya Dryomov req->r_snapid = snapid; 502922dab61SIlya Dryomov req->r_snapc = snapc; 503922dab61SIlya Dryomov req->r_linger = linger; 504922dab61SIlya Dryomov req->r_request = request_msg; 505922dab61SIlya Dryomov req->r_reply = reply_msg; 506922dab61SIlya Dryomov } 507922dab61SIlya Dryomov 5083d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 5093d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5101b83bef2SSage Weil unsigned int num_ops, 5113d14c5d2SYehuda Sadeh bool use_mempool, 51254a54007SAlex Elder gfp_t gfp_flags) 5133d14c5d2SYehuda Sadeh { 5143d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5153d14c5d2SYehuda Sadeh 5163d14c5d2SYehuda Sadeh if (use_mempool) { 5173f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 5183d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 5193f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 5203f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 5213d14c5d2SYehuda Sadeh } else { 5223f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 5233f1af42aSIlya Dryomov req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), 5243f1af42aSIlya Dryomov gfp_flags); 5253d14c5d2SYehuda Sadeh } 5263f1af42aSIlya Dryomov if (unlikely(!req)) 5273d14c5d2SYehuda Sadeh return NULL; 5283d14c5d2SYehuda Sadeh 5293540bfdbSIlya Dryomov request_init(req); 5303d14c5d2SYehuda Sadeh req->r_osdc = osdc; 5313d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 53279528734SAlex Elder req->r_num_ops = num_ops; 53384127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 53484127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 5353d14c5d2SYehuda Sadeh 53613d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 53713d1ad16SIlya Dryomov return req; 5383f1af42aSIlya Dryomov } 53913d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 5403f1af42aSIlya Dryomov 54130c156d9SYan, Zheng static int ceph_oloc_encoding_size(struct ceph_object_locator *oloc) 54230c156d9SYan, Zheng { 54330c156d9SYan, Zheng return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0); 54430c156d9SYan, Zheng } 54530c156d9SYan, Zheng 54613d1ad16SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 54713d1ad16SIlya Dryomov { 54813d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 54913d1ad16SIlya Dryomov struct ceph_msg *msg; 55013d1ad16SIlya Dryomov int msg_size; 5513d14c5d2SYehuda Sadeh 552d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 55330c156d9SYan, Zheng WARN_ON(ceph_oloc_empty(&req->r_base_oloc)); 554d30291b9SIlya Dryomov 55513d1ad16SIlya Dryomov /* create request message */ 556ae458f5aSIlya Dryomov msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ 557ae458f5aSIlya Dryomov msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ 55830c156d9SYan, Zheng msg_size += CEPH_ENCODING_START_BLK_LEN + 55930c156d9SYan, Zheng ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */ 560ae458f5aSIlya Dryomov msg_size += 1 + 8 + 4 + 4; /* pgid */ 56113d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 56213d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 563ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 564ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 56513d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 566ae458f5aSIlya Dryomov msg_size += 4; /* retry_attempt */ 567ae458f5aSIlya Dryomov 56813d1ad16SIlya Dryomov if (req->r_mempool) 5693d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 5703d14c5d2SYehuda Sadeh else 57113d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); 57213d1ad16SIlya Dryomov if (!msg) 57313d1ad16SIlya Dryomov return -ENOMEM; 5743d14c5d2SYehuda Sadeh 5753d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 5763d14c5d2SYehuda Sadeh req->r_request = msg; 5773d14c5d2SYehuda Sadeh 57813d1ad16SIlya Dryomov /* create reply message */ 57913d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 580711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 581711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 58213d1ad16SIlya Dryomov 58313d1ad16SIlya Dryomov if (req->r_mempool) 58413d1ad16SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 58513d1ad16SIlya Dryomov else 58613d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); 58713d1ad16SIlya Dryomov if (!msg) 58813d1ad16SIlya Dryomov return -ENOMEM; 58913d1ad16SIlya Dryomov 59013d1ad16SIlya Dryomov req->r_reply = msg; 59113d1ad16SIlya Dryomov 59213d1ad16SIlya Dryomov return 0; 59313d1ad16SIlya Dryomov } 59413d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 5953d14c5d2SYehuda Sadeh 596a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 597a8dd0a37SAlex Elder { 598a8dd0a37SAlex Elder switch (opcode) { 59970b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 60070b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 60170b5bfa3SIlya Dryomov #undef GENERATE_CASE 602a8dd0a37SAlex Elder default: 603a8dd0a37SAlex Elder return false; 604a8dd0a37SAlex Elder } 605a8dd0a37SAlex Elder } 606a8dd0a37SAlex Elder 60733803f33SAlex Elder /* 60833803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 60933803f33SAlex Elder * other information associated with them. It also serves as a 61033803f33SAlex Elder * common init routine for all the other init functions, below. 61133803f33SAlex Elder */ 612c99d2d4aSAlex Elder static struct ceph_osd_req_op * 61349719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 614144cba14SYan, Zheng u16 opcode, u32 flags) 61533803f33SAlex Elder { 616c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 617c99d2d4aSAlex Elder 618c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 61933803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 62033803f33SAlex Elder 621c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 62233803f33SAlex Elder memset(op, 0, sizeof (*op)); 62333803f33SAlex Elder op->op = opcode; 624144cba14SYan, Zheng op->flags = flags; 625c99d2d4aSAlex Elder 626c99d2d4aSAlex Elder return op; 62733803f33SAlex Elder } 62833803f33SAlex Elder 62949719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 630144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 63149719778SAlex Elder { 632144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 63349719778SAlex Elder } 63449719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 63549719778SAlex Elder 636c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 637c99d2d4aSAlex Elder unsigned int which, u16 opcode, 63833803f33SAlex Elder u64 offset, u64 length, 63933803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 64033803f33SAlex Elder { 641144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 642144cba14SYan, Zheng opcode, 0); 64333803f33SAlex Elder size_t payload_len = 0; 64433803f33SAlex Elder 645ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 646e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 647e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 64833803f33SAlex Elder 64933803f33SAlex Elder op->extent.offset = offset; 65033803f33SAlex Elder op->extent.length = length; 65133803f33SAlex Elder op->extent.truncate_size = truncate_size; 65233803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 653e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 65433803f33SAlex Elder payload_len += length; 65533803f33SAlex Elder 656de2aa102SIlya Dryomov op->indata_len = payload_len; 65733803f33SAlex Elder } 65833803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 65933803f33SAlex Elder 660c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 661c99d2d4aSAlex Elder unsigned int which, u64 length) 662e5975c7cSAlex Elder { 663c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 664c99d2d4aSAlex Elder u64 previous; 665c99d2d4aSAlex Elder 666c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 667c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 668c99d2d4aSAlex Elder previous = op->extent.length; 669e5975c7cSAlex Elder 670e5975c7cSAlex Elder if (length == previous) 671e5975c7cSAlex Elder return; /* Nothing to do */ 672e5975c7cSAlex Elder BUG_ON(length > previous); 673e5975c7cSAlex Elder 674e5975c7cSAlex Elder op->extent.length = length; 675d641df81SYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 676de2aa102SIlya Dryomov op->indata_len -= previous - length; 677e5975c7cSAlex Elder } 678e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 679e5975c7cSAlex Elder 6802c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 6812c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 6822c63f49aSYan, Zheng { 6832c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 6842c63f49aSYan, Zheng 6852c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 6862c63f49aSYan, Zheng 6872c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 6882c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 6892c63f49aSYan, Zheng /* dup previous one */ 6902c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 6912c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 6922c63f49aSYan, Zheng op->extent = prev_op->extent; 6932c63f49aSYan, Zheng /* adjust offset */ 6942c63f49aSYan, Zheng op->extent.offset += offset_inc; 6952c63f49aSYan, Zheng op->extent.length -= offset_inc; 6962c63f49aSYan, Zheng 6972c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 6982c63f49aSYan, Zheng op->indata_len -= offset_inc; 6992c63f49aSYan, Zheng } 7002c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 7012c63f49aSYan, Zheng 702c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 70304017e29SAlex Elder u16 opcode, const char *class, const char *method) 70433803f33SAlex Elder { 705144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 706144cba14SYan, Zheng opcode, 0); 7075f562df5SAlex Elder struct ceph_pagelist *pagelist; 70833803f33SAlex Elder size_t payload_len = 0; 70933803f33SAlex Elder size_t size; 71033803f33SAlex Elder 71133803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 71233803f33SAlex Elder 7135f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 7145f562df5SAlex Elder BUG_ON(!pagelist); 7155f562df5SAlex Elder ceph_pagelist_init(pagelist); 7165f562df5SAlex Elder 71733803f33SAlex Elder op->cls.class_name = class; 71833803f33SAlex Elder size = strlen(class); 71933803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 72033803f33SAlex Elder op->cls.class_len = size; 7215f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 72233803f33SAlex Elder payload_len += size; 72333803f33SAlex Elder 72433803f33SAlex Elder op->cls.method_name = method; 72533803f33SAlex Elder size = strlen(method); 72633803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 72733803f33SAlex Elder op->cls.method_len = size; 7285f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 72933803f33SAlex Elder payload_len += size; 73033803f33SAlex Elder 731a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 7325f562df5SAlex Elder 733de2aa102SIlya Dryomov op->indata_len = payload_len; 73433803f33SAlex Elder } 73533803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 7368c042b0dSAlex Elder 737d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 738d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 739d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 740d74b50beSYan, Zheng { 741144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 742144cba14SYan, Zheng opcode, 0); 743d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 744d74b50beSYan, Zheng size_t payload_len; 745d74b50beSYan, Zheng 746d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 747d74b50beSYan, Zheng 748d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 749d74b50beSYan, Zheng if (!pagelist) 750d74b50beSYan, Zheng return -ENOMEM; 751d74b50beSYan, Zheng 752d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 753d74b50beSYan, Zheng 754d74b50beSYan, Zheng payload_len = strlen(name); 755d74b50beSYan, Zheng op->xattr.name_len = payload_len; 756d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 757d74b50beSYan, Zheng 758d74b50beSYan, Zheng op->xattr.value_len = size; 759d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 760d74b50beSYan, Zheng payload_len += size; 761d74b50beSYan, Zheng 762d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 763d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 764d74b50beSYan, Zheng 765d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 766de2aa102SIlya Dryomov op->indata_len = payload_len; 767d74b50beSYan, Zheng return 0; 768d74b50beSYan, Zheng } 769d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 770d74b50beSYan, Zheng 771922dab61SIlya Dryomov /* 772922dab61SIlya Dryomov * @watch_opcode: CEPH_OSD_WATCH_OP_* 773922dab61SIlya Dryomov */ 774922dab61SIlya Dryomov static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, 775922dab61SIlya Dryomov u64 cookie, u8 watch_opcode) 77633803f33SAlex Elder { 777922dab61SIlya Dryomov struct ceph_osd_req_op *op; 77833803f33SAlex Elder 779922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); 78033803f33SAlex Elder op->watch.cookie = cookie; 781922dab61SIlya Dryomov op->watch.op = watch_opcode; 782922dab61SIlya Dryomov op->watch.gen = 0; 78333803f33SAlex Elder } 78433803f33SAlex Elder 785c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 786c647b8a8SIlya Dryomov unsigned int which, 787c647b8a8SIlya Dryomov u64 expected_object_size, 788c647b8a8SIlya Dryomov u64 expected_write_size) 789c647b8a8SIlya Dryomov { 790c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 791144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 792144cba14SYan, Zheng 0); 793c647b8a8SIlya Dryomov 794c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 795c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 796c647b8a8SIlya Dryomov 797c647b8a8SIlya Dryomov /* 798c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 799c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 800c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 801c647b8a8SIlya Dryomov */ 802c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 803c647b8a8SIlya Dryomov } 804c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 805c647b8a8SIlya Dryomov 80690af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 807ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 808ec9123c5SAlex Elder { 809ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 810ec9123c5SAlex Elder 811ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 812ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 813ec9123c5SAlex Elder if (length) 81490af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 815ec9123c5SAlex Elder length, osd_data->alignment); 816ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 817ec9123c5SAlex Elder BUG_ON(!length); 81890af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 819ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 820ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 82190af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 822ec9123c5SAlex Elder #endif 823ec9123c5SAlex Elder } else { 824ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 825ec9123c5SAlex Elder } 826ec9123c5SAlex Elder } 827ec9123c5SAlex Elder 828bb873b53SIlya Dryomov static u32 osd_req_encode_op(struct ceph_osd_op *dst, 829bb873b53SIlya Dryomov const struct ceph_osd_req_op *src) 8303d14c5d2SYehuda Sadeh { 831a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 832a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 833a8dd0a37SAlex Elder 834a8dd0a37SAlex Elder return 0; 835a8dd0a37SAlex Elder } 8363d14c5d2SYehuda Sadeh 837065a68f9SAlex Elder switch (src->op) { 838fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 839fbfab539SAlex Elder break; 8403d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 8413d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 842e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 843ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 844ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 845175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 846175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 8473d14c5d2SYehuda Sadeh dst->extent.truncate_size = 8483d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 8493d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 8503d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 8513d14c5d2SYehuda Sadeh break; 8523d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 8533d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 8543d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 855bb873b53SIlya Dryomov dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 8563d14c5d2SYehuda Sadeh break; 8573d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 8583d14c5d2SYehuda Sadeh break; 859a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 860a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 861922dab61SIlya Dryomov dst->watch.ver = cpu_to_le64(0); 862922dab61SIlya Dryomov dst->watch.op = src->watch.op; 863922dab61SIlya Dryomov dst->watch.gen = cpu_to_le32(src->watch.gen); 864922dab61SIlya Dryomov break; 865922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 866a40c4f10SYehuda Sadeh break; 86719079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 86819079203SIlya Dryomov dst->notify.cookie = cpu_to_le64(src->notify.cookie); 86919079203SIlya Dryomov break; 870a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 871a4ed38d7SDouglas Fuller break; 872c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 873c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 874c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 875c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 876c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 877c647b8a8SIlya Dryomov break; 878d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 879d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 880d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 881d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 882d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 883d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 884d74b50beSYan, Zheng break; 885864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 886864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 887864e9197SYan, Zheng break; 8883d14c5d2SYehuda Sadeh default: 8894c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 8908f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 8914c46459cSAlex Elder WARN_ON(1); 892a8dd0a37SAlex Elder 893a8dd0a37SAlex Elder return 0; 8943d14c5d2SYehuda Sadeh } 8957b25bf5fSIlya Dryomov 896a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 8977b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 898de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 899175face2SAlex Elder 900bb873b53SIlya Dryomov return src->indata_len; 9013d14c5d2SYehuda Sadeh } 9023d14c5d2SYehuda Sadeh 9033d14c5d2SYehuda Sadeh /* 9043d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 9053d14c5d2SYehuda Sadeh * extent as needed. 9063d14c5d2SYehuda Sadeh * 9073d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 9083d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 9093d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 9103d14c5d2SYehuda Sadeh * 9113d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 9123d14c5d2SYehuda Sadeh * data quickly. 9133d14c5d2SYehuda Sadeh */ 9143d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 9153d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 9163d14c5d2SYehuda Sadeh struct ceph_vino vino, 917715e4cd4SYan, Zheng u64 off, u64 *plen, 918715e4cd4SYan, Zheng unsigned int which, int num_ops, 9193d14c5d2SYehuda Sadeh int opcode, int flags, 9203d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 9213d14c5d2SYehuda Sadeh u32 truncate_seq, 9223d14c5d2SYehuda Sadeh u64 truncate_size, 923153e5167SAlex Elder bool use_mempool) 9243d14c5d2SYehuda Sadeh { 9253d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 92675d1c941SAlex Elder u64 objnum = 0; 92775d1c941SAlex Elder u64 objoff = 0; 92875d1c941SAlex Elder u64 objlen = 0; 9296816282dSSage Weil int r; 9303d14c5d2SYehuda Sadeh 931ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 932864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 933864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 9343d14c5d2SYehuda Sadeh 935acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 936ae7ca4a3SAlex Elder GFP_NOFS); 93713d1ad16SIlya Dryomov if (!req) { 93813d1ad16SIlya Dryomov r = -ENOMEM; 93913d1ad16SIlya Dryomov goto fail; 94013d1ad16SIlya Dryomov } 94179528734SAlex Elder 9423d14c5d2SYehuda Sadeh /* calculate max write size */ 943a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 94413d1ad16SIlya Dryomov if (r) 94513d1ad16SIlya Dryomov goto fail; 946a19dadfbSAlex Elder 947864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 948144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 949864e9197SYan, Zheng } else { 9507627151eSYan, Zheng u32 object_size = layout->object_size; 951864e9197SYan, Zheng u32 object_base = off - objoff; 952ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 953d18d1e28SAlex Elder if (truncate_size <= object_base) { 954d18d1e28SAlex Elder truncate_size = 0; 955d18d1e28SAlex Elder } else { 956d18d1e28SAlex Elder truncate_size -= object_base; 957d18d1e28SAlex Elder if (truncate_size > object_size) 958d18d1e28SAlex Elder truncate_size = object_size; 959d18d1e28SAlex Elder } 960ccca4e37SYan, Zheng } 961715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 962b0270324SAlex Elder truncate_size, truncate_seq); 963864e9197SYan, Zheng } 964d18d1e28SAlex Elder 965bb873b53SIlya Dryomov req->r_flags = flags; 9667627151eSYan, Zheng req->r_base_oloc.pool = layout->pool_id; 96730c156d9SYan, Zheng req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns); 968d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 969dbe0fc41SAlex Elder 970bb873b53SIlya Dryomov req->r_snapid = vino.snap; 971bb873b53SIlya Dryomov if (flags & CEPH_OSD_FLAG_WRITE) 972bb873b53SIlya Dryomov req->r_data_offset = off; 973bb873b53SIlya Dryomov 97413d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 97513d1ad16SIlya Dryomov if (r) 97613d1ad16SIlya Dryomov goto fail; 97713d1ad16SIlya Dryomov 9783d14c5d2SYehuda Sadeh return req; 97913d1ad16SIlya Dryomov 98013d1ad16SIlya Dryomov fail: 98113d1ad16SIlya Dryomov ceph_osdc_put_request(req); 98213d1ad16SIlya Dryomov return ERR_PTR(r); 9833d14c5d2SYehuda Sadeh } 9843d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 9853d14c5d2SYehuda Sadeh 9863d14c5d2SYehuda Sadeh /* 9873d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 9883d14c5d2SYehuda Sadeh */ 989fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 9904609245eSIlya Dryomov DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) 9913d14c5d2SYehuda Sadeh 9920247a0cfSIlya Dryomov static bool osd_homeless(struct ceph_osd *osd) 9930247a0cfSIlya Dryomov { 9940247a0cfSIlya Dryomov return osd->o_osd == CEPH_HOMELESS_OSD; 9950247a0cfSIlya Dryomov } 9960247a0cfSIlya Dryomov 9975aea3dcdSIlya Dryomov static bool osd_registered(struct ceph_osd *osd) 9983d14c5d2SYehuda Sadeh { 9995aea3dcdSIlya Dryomov verify_osdc_locked(osd->o_osdc); 10003d14c5d2SYehuda Sadeh 10015aea3dcdSIlya Dryomov return !RB_EMPTY_NODE(&osd->o_node); 10023d14c5d2SYehuda Sadeh } 10033d14c5d2SYehuda Sadeh 10043d14c5d2SYehuda Sadeh /* 10050247a0cfSIlya Dryomov * Assumes @osd is zero-initialized. 10060247a0cfSIlya Dryomov */ 10070247a0cfSIlya Dryomov static void osd_init(struct ceph_osd *osd) 10080247a0cfSIlya Dryomov { 10090247a0cfSIlya Dryomov atomic_set(&osd->o_ref, 1); 10100247a0cfSIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 10115aea3dcdSIlya Dryomov osd->o_requests = RB_ROOT; 1012922dab61SIlya Dryomov osd->o_linger_requests = RB_ROOT; 10130247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_osd_lru); 10140247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_keepalive_item); 10150247a0cfSIlya Dryomov osd->o_incarnation = 1; 10165aea3dcdSIlya Dryomov mutex_init(&osd->lock); 10170247a0cfSIlya Dryomov } 10180247a0cfSIlya Dryomov 10190247a0cfSIlya Dryomov static void osd_cleanup(struct ceph_osd *osd) 10200247a0cfSIlya Dryomov { 10210247a0cfSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); 10225aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 1023922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 10240247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_osd_lru)); 10250247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_keepalive_item)); 10260247a0cfSIlya Dryomov 10270247a0cfSIlya Dryomov if (osd->o_auth.authorizer) { 10280247a0cfSIlya Dryomov WARN_ON(osd_homeless(osd)); 10290247a0cfSIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 10300247a0cfSIlya Dryomov } 10310247a0cfSIlya Dryomov } 10320247a0cfSIlya Dryomov 10330247a0cfSIlya Dryomov /* 10343d14c5d2SYehuda Sadeh * Track open sessions with osds. 10353d14c5d2SYehuda Sadeh */ 1036e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10373d14c5d2SYehuda Sadeh { 10383d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10393d14c5d2SYehuda Sadeh 10400247a0cfSIlya Dryomov WARN_ON(onum == CEPH_HOMELESS_OSD); 10410247a0cfSIlya Dryomov 10427a28f59bSIlya Dryomov osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); 10430247a0cfSIlya Dryomov osd_init(osd); 10443d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1045e10006f8SAlex Elder osd->o_osd = onum; 10463d14c5d2SYehuda Sadeh 1047b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10483d14c5d2SYehuda Sadeh 10493d14c5d2SYehuda Sadeh return osd; 10503d14c5d2SYehuda Sadeh } 10513d14c5d2SYehuda Sadeh 10523d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 10533d14c5d2SYehuda Sadeh { 10543d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 10553d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 10563d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 10573d14c5d2SYehuda Sadeh return osd; 10583d14c5d2SYehuda Sadeh } else { 10593d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10603d14c5d2SYehuda Sadeh return NULL; 10613d14c5d2SYehuda Sadeh } 10623d14c5d2SYehuda Sadeh } 10633d14c5d2SYehuda Sadeh 10643d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 10653d14c5d2SYehuda Sadeh { 10663d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 10673d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 1068b28ec2f3SIlya Dryomov if (atomic_dec_and_test(&osd->o_ref)) { 10690247a0cfSIlya Dryomov osd_cleanup(osd); 10703d14c5d2SYehuda Sadeh kfree(osd); 10713d14c5d2SYehuda Sadeh } 10723d14c5d2SYehuda Sadeh } 10733d14c5d2SYehuda Sadeh 1074fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1075fcd00b68SIlya Dryomov 10769dd2845cSIlya Dryomov static void __move_osd_to_lru(struct ceph_osd *osd) 10773d14c5d2SYehuda Sadeh { 10789dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 10799dd2845cSIlya Dryomov 10809dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 10813d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1082bbf37ec3SIlya Dryomov 10839dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 10843d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 10859dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 10869dd2845cSIlya Dryomov 1087a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 10883d14c5d2SYehuda Sadeh } 10893d14c5d2SYehuda Sadeh 10909dd2845cSIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd *osd) 1091bbf37ec3SIlya Dryomov { 10925aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1093922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) 10949dd2845cSIlya Dryomov __move_osd_to_lru(osd); 1095bbf37ec3SIlya Dryomov } 1096bbf37ec3SIlya Dryomov 10973d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 10983d14c5d2SYehuda Sadeh { 10999dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 11009dd2845cSIlya Dryomov 11019dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11029dd2845cSIlya Dryomov 11039dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 11043d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 11053d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11069dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 11073d14c5d2SYehuda Sadeh } 11083d14c5d2SYehuda Sadeh 11093d14c5d2SYehuda Sadeh /* 11105aea3dcdSIlya Dryomov * Close the connection and assign any leftover requests to the 11115aea3dcdSIlya Dryomov * homeless session. 11125aea3dcdSIlya Dryomov */ 11135aea3dcdSIlya Dryomov static void close_osd(struct ceph_osd *osd) 11145aea3dcdSIlya Dryomov { 11155aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 11165aea3dcdSIlya Dryomov struct rb_node *n; 11175aea3dcdSIlya Dryomov 11185aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 11195aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11205aea3dcdSIlya Dryomov 11215aea3dcdSIlya Dryomov ceph_con_close(&osd->o_con); 11225aea3dcdSIlya Dryomov 11235aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 11245aea3dcdSIlya Dryomov struct ceph_osd_request *req = 11255aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 11265aea3dcdSIlya Dryomov 11275aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 11285aea3dcdSIlya Dryomov 11295aea3dcdSIlya Dryomov dout(" reassigning req %p tid %llu\n", req, req->r_tid); 11305aea3dcdSIlya Dryomov unlink_request(osd, req); 11315aea3dcdSIlya Dryomov link_request(&osdc->homeless_osd, req); 11325aea3dcdSIlya Dryomov } 1133922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 1134922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1135922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 1136922dab61SIlya Dryomov 1137922dab61SIlya Dryomov n = rb_next(n); /* unlink_linger() */ 1138922dab61SIlya Dryomov 1139922dab61SIlya Dryomov dout(" reassigning lreq %p linger_id %llu\n", lreq, 1140922dab61SIlya Dryomov lreq->linger_id); 1141922dab61SIlya Dryomov unlink_linger(osd, lreq); 1142922dab61SIlya Dryomov link_linger(&osdc->homeless_osd, lreq); 1143922dab61SIlya Dryomov } 11445aea3dcdSIlya Dryomov 11455aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 11465aea3dcdSIlya Dryomov erase_osd(&osdc->osds, osd); 11475aea3dcdSIlya Dryomov put_osd(osd); 11485aea3dcdSIlya Dryomov } 11495aea3dcdSIlya Dryomov 11505aea3dcdSIlya Dryomov /* 11513d14c5d2SYehuda Sadeh * reset osd connect 11523d14c5d2SYehuda Sadeh */ 11535aea3dcdSIlya Dryomov static int reopen_osd(struct ceph_osd *osd) 11543d14c5d2SYehuda Sadeh { 1155c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 11563d14c5d2SYehuda Sadeh 11575aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11585aea3dcdSIlya Dryomov 11595aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1160922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) { 11615aea3dcdSIlya Dryomov close_osd(osd); 1162c3acb181SAlex Elder return -ENODEV; 1163c3acb181SAlex Elder } 1164c3acb181SAlex Elder 11655aea3dcdSIlya Dryomov peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; 1166c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 11673d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 11685aea3dcdSIlya Dryomov struct rb_node *n; 1169c3acb181SAlex Elder 11703d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 11710b4af2e8SIlya Dryomov "letting msgr retry\n"); 11723d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 11735aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 11745aea3dcdSIlya Dryomov struct ceph_osd_request *req = 11755aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 11763d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 11775aea3dcdSIlya Dryomov } 1178c3acb181SAlex Elder 1179c3acb181SAlex Elder return -EAGAIN; 11803d14c5d2SYehuda Sadeh } 1181c3acb181SAlex Elder 1182c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1183c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1184c3acb181SAlex Elder osd->o_incarnation++; 1185c3acb181SAlex Elder 1186c3acb181SAlex Elder return 0; 11873d14c5d2SYehuda Sadeh } 11883d14c5d2SYehuda Sadeh 11895aea3dcdSIlya Dryomov static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, 11905aea3dcdSIlya Dryomov bool wrlocked) 11913d14c5d2SYehuda Sadeh { 11925aea3dcdSIlya Dryomov struct ceph_osd *osd; 11935aea3dcdSIlya Dryomov 11945aea3dcdSIlya Dryomov if (wrlocked) 11955aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 11965aea3dcdSIlya Dryomov else 11975aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 11985aea3dcdSIlya Dryomov 11995aea3dcdSIlya Dryomov if (o != CEPH_HOMELESS_OSD) 12005aea3dcdSIlya Dryomov osd = lookup_osd(&osdc->osds, o); 12015aea3dcdSIlya Dryomov else 12025aea3dcdSIlya Dryomov osd = &osdc->homeless_osd; 12035aea3dcdSIlya Dryomov if (!osd) { 12045aea3dcdSIlya Dryomov if (!wrlocked) 12055aea3dcdSIlya Dryomov return ERR_PTR(-EAGAIN); 12065aea3dcdSIlya Dryomov 12075aea3dcdSIlya Dryomov osd = create_osd(osdc, o); 12085aea3dcdSIlya Dryomov insert_osd(&osdc->osds, osd); 12095aea3dcdSIlya Dryomov ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, 12105aea3dcdSIlya Dryomov &osdc->osdmap->osd_addr[osd->o_osd]); 12115aea3dcdSIlya Dryomov } 12125aea3dcdSIlya Dryomov 12135aea3dcdSIlya Dryomov dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); 12145aea3dcdSIlya Dryomov return osd; 1215a40c4f10SYehuda Sadeh } 1216a40c4f10SYehuda Sadeh 12173d14c5d2SYehuda Sadeh /* 12185aea3dcdSIlya Dryomov * Create request <-> OSD session relation. 12195aea3dcdSIlya Dryomov * 12205aea3dcdSIlya Dryomov * @req has to be assigned a tid, @osd may be homeless. 12213d14c5d2SYehuda Sadeh */ 12225aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) 12233d14c5d2SYehuda Sadeh { 12245aea3dcdSIlya Dryomov verify_osd_locked(osd); 12255aea3dcdSIlya Dryomov WARN_ON(!req->r_tid || req->r_osd); 12265aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 122735f9f8a0SSage Weil req, req->r_tid); 12285aea3dcdSIlya Dryomov 12295aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 12305aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 12315aea3dcdSIlya Dryomov else 12325aea3dcdSIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 12335aea3dcdSIlya Dryomov 12345aea3dcdSIlya Dryomov get_osd(osd); 12355aea3dcdSIlya Dryomov insert_request(&osd->o_requests, req); 12365aea3dcdSIlya Dryomov req->r_osd = osd; 123735f9f8a0SSage Weil } 123835f9f8a0SSage Weil 12395aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) 12403d14c5d2SYehuda Sadeh { 12415aea3dcdSIlya Dryomov verify_osd_locked(osd); 12425aea3dcdSIlya Dryomov WARN_ON(req->r_osd != osd); 12435aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 12445aea3dcdSIlya Dryomov req, req->r_tid); 12455aea3dcdSIlya Dryomov 12465aea3dcdSIlya Dryomov req->r_osd = NULL; 12475aea3dcdSIlya Dryomov erase_request(&osd->o_requests, req); 12485aea3dcdSIlya Dryomov put_osd(osd); 12495aea3dcdSIlya Dryomov 12505aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 12515aea3dcdSIlya Dryomov maybe_move_osd_to_lru(osd); 12525aea3dcdSIlya Dryomov else 12535aea3dcdSIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 12543d14c5d2SYehuda Sadeh } 12553d14c5d2SYehuda Sadeh 125663244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 125763244fa1SIlya Dryomov { 125863244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 125963244fa1SIlya Dryomov } 126063244fa1SIlya Dryomov 126142c1b124SIlya Dryomov static bool have_pool_full(struct ceph_osd_client *osdc) 126242c1b124SIlya Dryomov { 126342c1b124SIlya Dryomov struct rb_node *n; 126442c1b124SIlya Dryomov 126542c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 126642c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 126742c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 126842c1b124SIlya Dryomov 126942c1b124SIlya Dryomov if (__pool_full(pi)) 127042c1b124SIlya Dryomov return true; 127142c1b124SIlya Dryomov } 127242c1b124SIlya Dryomov 127342c1b124SIlya Dryomov return false; 127442c1b124SIlya Dryomov } 127542c1b124SIlya Dryomov 12765aea3dcdSIlya Dryomov static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) 12775aea3dcdSIlya Dryomov { 12785aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 12795aea3dcdSIlya Dryomov 12805aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 12815aea3dcdSIlya Dryomov if (!pi) 12825aea3dcdSIlya Dryomov return false; 12835aea3dcdSIlya Dryomov 12845aea3dcdSIlya Dryomov return __pool_full(pi); 12855aea3dcdSIlya Dryomov } 12865aea3dcdSIlya Dryomov 12873d14c5d2SYehuda Sadeh /* 1288d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1289d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1290d29adb34SJosh Durgin */ 129163244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 129263244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 129363244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 129463244fa1SIlya Dryomov { 1295b7ec35b3SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 1296b7ec35b3SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 1297b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 129863244fa1SIlya Dryomov __pool_full(pi); 129963244fa1SIlya Dryomov 130063244fa1SIlya Dryomov WARN_ON(pi->id != t->base_oloc.pool); 130163244fa1SIlya Dryomov return (t->flags & CEPH_OSD_FLAG_READ && pauserd) || 130263244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_WRITE && pausewr); 130363244fa1SIlya Dryomov } 130463244fa1SIlya Dryomov 130563244fa1SIlya Dryomov enum calc_target_result { 130663244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 130763244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 130863244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 130963244fa1SIlya Dryomov }; 131063244fa1SIlya Dryomov 131163244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 131263244fa1SIlya Dryomov struct ceph_osd_request_target *t, 131363244fa1SIlya Dryomov u32 *last_force_resend, 131463244fa1SIlya Dryomov bool any_change) 131563244fa1SIlya Dryomov { 131663244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 131763244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 131863244fa1SIlya Dryomov struct ceph_osds up, acting; 131963244fa1SIlya Dryomov bool force_resend = false; 132063244fa1SIlya Dryomov bool need_check_tiering = false; 132163244fa1SIlya Dryomov bool need_resend = false; 1322b7ec35b3SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); 132363244fa1SIlya Dryomov enum calc_target_result ct_res; 132463244fa1SIlya Dryomov int ret; 132563244fa1SIlya Dryomov 132663244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 132763244fa1SIlya Dryomov if (!pi) { 132863244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 132963244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 133063244fa1SIlya Dryomov goto out; 133163244fa1SIlya Dryomov } 133263244fa1SIlya Dryomov 133363244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 133463244fa1SIlya Dryomov if (last_force_resend && 133563244fa1SIlya Dryomov *last_force_resend < pi->last_force_request_resend) { 133663244fa1SIlya Dryomov *last_force_resend = pi->last_force_request_resend; 133763244fa1SIlya Dryomov force_resend = true; 133863244fa1SIlya Dryomov } else if (!last_force_resend) { 133963244fa1SIlya Dryomov force_resend = true; 134063244fa1SIlya Dryomov } 134163244fa1SIlya Dryomov } 134263244fa1SIlya Dryomov if (ceph_oid_empty(&t->target_oid) || force_resend) { 134363244fa1SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 134463244fa1SIlya Dryomov need_check_tiering = true; 134563244fa1SIlya Dryomov } 134663244fa1SIlya Dryomov if (ceph_oloc_empty(&t->target_oloc) || force_resend) { 134763244fa1SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 134863244fa1SIlya Dryomov need_check_tiering = true; 134963244fa1SIlya Dryomov } 135063244fa1SIlya Dryomov 135163244fa1SIlya Dryomov if (need_check_tiering && 135263244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 135363244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) 135463244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 135563244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) 135663244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 135763244fa1SIlya Dryomov } 135863244fa1SIlya Dryomov 135963244fa1SIlya Dryomov ret = ceph_object_locator_to_pg(osdc->osdmap, &t->target_oid, 136063244fa1SIlya Dryomov &t->target_oloc, &pgid); 136163244fa1SIlya Dryomov if (ret) { 136263244fa1SIlya Dryomov WARN_ON(ret != -ENOENT); 136363244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 136463244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 136563244fa1SIlya Dryomov goto out; 136663244fa1SIlya Dryomov } 136763244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 136863244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 136963244fa1SIlya Dryomov 137063244fa1SIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting); 137163244fa1SIlya Dryomov if (any_change && 137263244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 137363244fa1SIlya Dryomov &acting, 137463244fa1SIlya Dryomov &t->up, 137563244fa1SIlya Dryomov &up, 137663244fa1SIlya Dryomov t->size, 137763244fa1SIlya Dryomov pi->size, 137863244fa1SIlya Dryomov t->min_size, 137963244fa1SIlya Dryomov pi->min_size, 138063244fa1SIlya Dryomov t->pg_num, 138163244fa1SIlya Dryomov pi->pg_num, 138263244fa1SIlya Dryomov t->sort_bitwise, 138363244fa1SIlya Dryomov sort_bitwise, 138463244fa1SIlya Dryomov &last_pgid)) 138563244fa1SIlya Dryomov force_resend = true; 138663244fa1SIlya Dryomov 138763244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 138863244fa1SIlya Dryomov t->paused = false; 138963244fa1SIlya Dryomov need_resend = true; 139063244fa1SIlya Dryomov } 139163244fa1SIlya Dryomov 139263244fa1SIlya Dryomov if (ceph_pg_compare(&t->pgid, &pgid) || 139363244fa1SIlya Dryomov ceph_osds_changed(&t->acting, &acting, any_change) || 139463244fa1SIlya Dryomov force_resend) { 139563244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 139663244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 139763244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 139863244fa1SIlya Dryomov t->size = pi->size; 139963244fa1SIlya Dryomov t->min_size = pi->min_size; 140063244fa1SIlya Dryomov t->pg_num = pi->pg_num; 140163244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 140263244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 140363244fa1SIlya Dryomov 140463244fa1SIlya Dryomov t->osd = acting.primary; 140563244fa1SIlya Dryomov need_resend = true; 140663244fa1SIlya Dryomov } 140763244fa1SIlya Dryomov 140863244fa1SIlya Dryomov ct_res = need_resend ? CALC_TARGET_NEED_RESEND : CALC_TARGET_NO_ACTION; 140963244fa1SIlya Dryomov out: 141063244fa1SIlya Dryomov dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); 141163244fa1SIlya Dryomov return ct_res; 141263244fa1SIlya Dryomov } 141363244fa1SIlya Dryomov 1414bb873b53SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req, 1415bb873b53SIlya Dryomov struct ceph_msg *msg) 14163d14c5d2SYehuda Sadeh { 1417bb873b53SIlya Dryomov u32 data_len = 0; 1418bb873b53SIlya Dryomov int i; 14193d14c5d2SYehuda Sadeh 1420bb873b53SIlya Dryomov if (!list_empty(&msg->data)) 1421bb873b53SIlya Dryomov return; 14223d14c5d2SYehuda Sadeh 1423bb873b53SIlya Dryomov WARN_ON(msg->data_length); 1424bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1425bb873b53SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[i]; 1426bb873b53SIlya Dryomov 1427bb873b53SIlya Dryomov switch (op->op) { 1428bb873b53SIlya Dryomov /* request */ 1429bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 1430bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 1431bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 1432bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->extent.osd_data); 1433bb873b53SIlya Dryomov break; 1434bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 1435bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 1436bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 1437bb873b53SIlya Dryomov op->xattr.value_len); 1438bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->xattr.osd_data); 1439bb873b53SIlya Dryomov break; 1440922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 1441922dab61SIlya Dryomov ceph_osdc_msg_data_add(msg, 1442922dab61SIlya Dryomov &op->notify_ack.request_data); 1443922dab61SIlya Dryomov break; 1444bb873b53SIlya Dryomov 1445bb873b53SIlya Dryomov /* reply */ 1446bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 1447bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1448bb873b53SIlya Dryomov &op->raw_data_in); 1449bb873b53SIlya Dryomov break; 1450bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 1451bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1452bb873b53SIlya Dryomov &op->extent.osd_data); 1453bb873b53SIlya Dryomov break; 1454a4ed38d7SDouglas Fuller case CEPH_OSD_OP_LIST_WATCHERS: 1455a4ed38d7SDouglas Fuller ceph_osdc_msg_data_add(req->r_reply, 1456a4ed38d7SDouglas Fuller &op->list_watchers.response_data); 1457a4ed38d7SDouglas Fuller break; 1458bb873b53SIlya Dryomov 1459bb873b53SIlya Dryomov /* both */ 1460bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 1461bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 1462bb873b53SIlya Dryomov op->cls.method_len + 1463bb873b53SIlya Dryomov op->cls.indata_len); 1464bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_info); 1465bb873b53SIlya Dryomov /* optional, can be NONE */ 1466bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_data); 1467bb873b53SIlya Dryomov /* optional, can be NONE */ 1468bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1469bb873b53SIlya Dryomov &op->cls.response_data); 1470bb873b53SIlya Dryomov break; 147119079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 147219079203SIlya Dryomov ceph_osdc_msg_data_add(msg, 147319079203SIlya Dryomov &op->notify.request_data); 147419079203SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 147519079203SIlya Dryomov &op->notify.response_data); 147619079203SIlya Dryomov break; 1477bb873b53SIlya Dryomov } 1478bb873b53SIlya Dryomov 1479bb873b53SIlya Dryomov data_len += op->indata_len; 1480bb873b53SIlya Dryomov } 1481bb873b53SIlya Dryomov 1482bb873b53SIlya Dryomov WARN_ON(data_len != msg->data_length); 1483bb873b53SIlya Dryomov } 1484bb873b53SIlya Dryomov 1485bb873b53SIlya Dryomov static void encode_request(struct ceph_osd_request *req, struct ceph_msg *msg) 1486bb873b53SIlya Dryomov { 1487bb873b53SIlya Dryomov void *p = msg->front.iov_base; 1488bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 1489bb873b53SIlya Dryomov u32 data_len = 0; 1490bb873b53SIlya Dryomov int i; 1491bb873b53SIlya Dryomov 1492bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 1493bb873b53SIlya Dryomov /* snapshots aren't writeable */ 1494bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 1495bb873b53SIlya Dryomov } else { 1496bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 1497bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 1498bb873b53SIlya Dryomov } 1499bb873b53SIlya Dryomov 1500bb873b53SIlya Dryomov setup_request_data(req, msg); 1501bb873b53SIlya Dryomov 1502bb873b53SIlya Dryomov ceph_encode_32(&p, 1); /* client_inc, always 1 */ 1503bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 1504bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 1505bb873b53SIlya Dryomov ceph_encode_timespec(p, &req->r_mtime); 1506bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 1507bb873b53SIlya Dryomov /* aka reassert_version */ 1508bb873b53SIlya Dryomov memcpy(p, &req->r_replay_version, sizeof(req->r_replay_version)); 1509bb873b53SIlya Dryomov p += sizeof(req->r_replay_version); 1510bb873b53SIlya Dryomov 1511bb873b53SIlya Dryomov /* oloc */ 151230c156d9SYan, Zheng ceph_start_encoding(&p, 5, 4, 151330c156d9SYan, Zheng ceph_oloc_encoding_size(&req->r_t.target_oloc)); 1514bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_t.target_oloc.pool); 1515bb873b53SIlya Dryomov ceph_encode_32(&p, -1); /* preferred */ 1516bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* key len */ 151730c156d9SYan, Zheng if (req->r_t.target_oloc.pool_ns) 151830c156d9SYan, Zheng ceph_encode_string(&p, end, req->r_t.target_oloc.pool_ns->str, 151930c156d9SYan, Zheng req->r_t.target_oloc.pool_ns->len); 152030c156d9SYan, Zheng else 152130c156d9SYan, Zheng ceph_encode_32(&p, 0); 1522bb873b53SIlya Dryomov 1523bb873b53SIlya Dryomov /* pgid */ 1524bb873b53SIlya Dryomov ceph_encode_8(&p, 1); 1525a66dd383SIlya Dryomov ceph_encode_64(&p, req->r_t.pgid.pool); 1526a66dd383SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); 1527bb873b53SIlya Dryomov ceph_encode_32(&p, -1); /* preferred */ 15282169aea6SSage Weil 1529bb873b53SIlya Dryomov /* oid */ 1530bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_t.target_oid.name_len); 1531bb873b53SIlya Dryomov memcpy(p, req->r_t.target_oid.name, req->r_t.target_oid.name_len); 1532bb873b53SIlya Dryomov p += req->r_t.target_oid.name_len; 1533bb873b53SIlya Dryomov 1534bb873b53SIlya Dryomov /* ops, can imply data */ 1535bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 1536bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1537bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 1538bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 1539bb873b53SIlya Dryomov } 1540bb873b53SIlya Dryomov 1541bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 1542bb873b53SIlya Dryomov if (req->r_snapc) { 1543bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 1544bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 1545bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 1546bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 1547bb873b53SIlya Dryomov } else { 1548bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 1549bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 1550bb873b53SIlya Dryomov } 1551bb873b53SIlya Dryomov 1552bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 1553bb873b53SIlya Dryomov 1554bb873b53SIlya Dryomov BUG_ON(p > end); 1555bb873b53SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 1556bb873b53SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 1557bb873b53SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 1558bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 1559bb873b53SIlya Dryomov /* 1560bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 1561bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 1562bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 1563bb873b53SIlya Dryomov */ 1564bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 1565bb873b53SIlya Dryomov 15664a3262b1SIlya Dryomov dout("%s req %p oid %s oid_len %d front %zu data %u\n", __func__, 15674a3262b1SIlya Dryomov req, req->r_t.target_oid.name, req->r_t.target_oid.name_len, 15684a3262b1SIlya Dryomov msg->front.iov_len, data_len); 1569bb873b53SIlya Dryomov } 1570bb873b53SIlya Dryomov 1571bb873b53SIlya Dryomov /* 1572bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 1573bb873b53SIlya Dryomov */ 1574bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 1575bb873b53SIlya Dryomov { 1576bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 1577bb873b53SIlya Dryomov 15785aea3dcdSIlya Dryomov verify_osd_locked(osd); 1579bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 1580bb873b53SIlya Dryomov 15815aea3dcdSIlya Dryomov /* 15825aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 15835aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 15845aea3dcdSIlya Dryomov */ 15855aea3dcdSIlya Dryomov if (req->r_sent) 15865aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 15875aea3dcdSIlya Dryomov 1588bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 1589bb873b53SIlya Dryomov if (req->r_attempts) 1590bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 1591bb873b53SIlya Dryomov else 1592bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 1593bb873b53SIlya Dryomov 1594bb873b53SIlya Dryomov encode_request(req, req->r_request); 1595bb873b53SIlya Dryomov 1596bb873b53SIlya Dryomov dout("%s req %p tid %llu to pg %llu.%x osd%d flags 0x%x attempt %d\n", 1597bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 1598bb873b53SIlya Dryomov req->r_t.osd, req->r_flags, req->r_attempts); 1599bb873b53SIlya Dryomov 1600bb873b53SIlya Dryomov req->r_t.paused = false; 16013d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1602bb873b53SIlya Dryomov req->r_attempts++; 16033d14c5d2SYehuda Sadeh 1604bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 1605bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 1606bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 16073d14c5d2SYehuda Sadeh } 16083d14c5d2SYehuda Sadeh 160942c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 161042c1b124SIlya Dryomov { 161142c1b124SIlya Dryomov bool continuous = false; 161242c1b124SIlya Dryomov 16135aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 161442c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 161542c1b124SIlya Dryomov 1616b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 1617b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || 1618b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 161942c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 162042c1b124SIlya Dryomov continuous = true; 162142c1b124SIlya Dryomov } else { 162242c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 162342c1b124SIlya Dryomov } 162442c1b124SIlya Dryomov 162542c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 162642c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 162742c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 162842c1b124SIlya Dryomov } 162942c1b124SIlya Dryomov 16304609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req); 16314609245eSIlya Dryomov 16325aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 16330bbfdfe8SIlya Dryomov { 16345aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 16355aea3dcdSIlya Dryomov struct ceph_osd *osd; 16364609245eSIlya Dryomov enum calc_target_result ct_res; 16375aea3dcdSIlya Dryomov bool need_send = false; 16385aea3dcdSIlya Dryomov bool promoted = false; 16390bbfdfe8SIlya Dryomov 16405aea3dcdSIlya Dryomov WARN_ON(req->r_tid || req->r_got_reply); 16415aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 16425aea3dcdSIlya Dryomov 16435aea3dcdSIlya Dryomov again: 16444609245eSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, &req->r_last_force_resend, false); 16454609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) 16464609245eSIlya Dryomov goto promote; 16474609245eSIlya Dryomov 16485aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 16495aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 16505aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 16515aea3dcdSIlya Dryomov goto promote; 16525aea3dcdSIlya Dryomov } 16535aea3dcdSIlya Dryomov 16545aea3dcdSIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 1655b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 16565aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 16575aea3dcdSIlya Dryomov req->r_t.paused = true; 16585aea3dcdSIlya Dryomov maybe_request_map(osdc); 16595aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 1660b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 16615aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 16625aea3dcdSIlya Dryomov req->r_t.paused = true; 16635aea3dcdSIlya Dryomov maybe_request_map(osdc); 16645aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 16655aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 16665aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 1667b7ec35b3SIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 16685aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 16695aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 16705aea3dcdSIlya Dryomov pr_warn_ratelimited("FULL or reached pool quota\n"); 16715aea3dcdSIlya Dryomov req->r_t.paused = true; 16725aea3dcdSIlya Dryomov maybe_request_map(osdc); 16735aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 16745aea3dcdSIlya Dryomov need_send = true; 16750bbfdfe8SIlya Dryomov } else { 16765aea3dcdSIlya Dryomov maybe_request_map(osdc); 16770bbfdfe8SIlya Dryomov } 16780bbfdfe8SIlya Dryomov 16795aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 16805aea3dcdSIlya Dryomov /* 16815aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 16825aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 16835aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 16845aea3dcdSIlya Dryomov */ 16855aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 16865aea3dcdSIlya Dryomov link_request(osd, req); 16875aea3dcdSIlya Dryomov if (need_send) 16885aea3dcdSIlya Dryomov send_request(req); 16895aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 16905aea3dcdSIlya Dryomov 16914609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) 16924609245eSIlya Dryomov send_map_check(req); 16934609245eSIlya Dryomov 16945aea3dcdSIlya Dryomov if (promoted) 16955aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 16965aea3dcdSIlya Dryomov return; 16975aea3dcdSIlya Dryomov 16985aea3dcdSIlya Dryomov promote: 16995aea3dcdSIlya Dryomov up_read(&osdc->lock); 17005aea3dcdSIlya Dryomov down_write(&osdc->lock); 17015aea3dcdSIlya Dryomov wrlocked = true; 17025aea3dcdSIlya Dryomov promoted = true; 17035aea3dcdSIlya Dryomov goto again; 17040bbfdfe8SIlya Dryomov } 17050bbfdfe8SIlya Dryomov 17065aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 17075aea3dcdSIlya Dryomov { 17085aea3dcdSIlya Dryomov unsigned int mask = CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK; 17095aea3dcdSIlya Dryomov 17105aea3dcdSIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_READ) { 17115aea3dcdSIlya Dryomov WARN_ON(req->r_flags & mask); 17125aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ACK; 17135aea3dcdSIlya Dryomov } else if (req->r_flags & CEPH_OSD_FLAG_WRITE) 17145aea3dcdSIlya Dryomov WARN_ON(!(req->r_flags & mask)); 17155aea3dcdSIlya Dryomov else 17165aea3dcdSIlya Dryomov WARN_ON(1); 17175aea3dcdSIlya Dryomov 17185aea3dcdSIlya Dryomov WARN_ON(req->r_unsafe_callback && (req->r_flags & mask) != mask); 17195aea3dcdSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 17205aea3dcdSIlya Dryomov } 17215aea3dcdSIlya Dryomov 17225aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 17235aea3dcdSIlya Dryomov { 17245aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 17255aea3dcdSIlya Dryomov account_request(req); 17265aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 17275aea3dcdSIlya Dryomov } 17285aea3dcdSIlya Dryomov 172945ee2c1dSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 17305aea3dcdSIlya Dryomov { 17315aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 17325aea3dcdSIlya Dryomov struct ceph_osd *osd = req->r_osd; 17335aea3dcdSIlya Dryomov 17345aea3dcdSIlya Dryomov verify_osd_locked(osd); 17355aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 17365aea3dcdSIlya Dryomov 17374609245eSIlya Dryomov WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); 17385aea3dcdSIlya Dryomov unlink_request(osd, req); 17395aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 17405aea3dcdSIlya Dryomov 17415aea3dcdSIlya Dryomov /* 17425aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 17435aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 17445aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 17455aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 17465aea3dcdSIlya Dryomov */ 17475aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 17485aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 17495aea3dcdSIlya Dryomov } 17505aea3dcdSIlya Dryomov 1751fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 1752fe5da05eSIlya Dryomov { 1753fe5da05eSIlya Dryomov if (req->r_callback) 1754fe5da05eSIlya Dryomov req->r_callback(req); 1755fe5da05eSIlya Dryomov else 1756fe5da05eSIlya Dryomov complete_all(&req->r_completion); 1757fe5da05eSIlya Dryomov } 1758fe5da05eSIlya Dryomov 17594609245eSIlya Dryomov /* 17604609245eSIlya Dryomov * Note that this is open-coded in handle_reply(), which has to deal 17614609245eSIlya Dryomov * with ack vs commit, dup acks, etc. 17624609245eSIlya Dryomov */ 17634609245eSIlya Dryomov static void complete_request(struct ceph_osd_request *req, int err) 17644609245eSIlya Dryomov { 17654609245eSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 17664609245eSIlya Dryomov 17674609245eSIlya Dryomov req->r_result = err; 176845ee2c1dSIlya Dryomov finish_request(req); 17694609245eSIlya Dryomov __complete_request(req); 1770c297eb42SIlya Dryomov complete_all(&req->r_done_completion); 17714609245eSIlya Dryomov ceph_osdc_put_request(req); 17724609245eSIlya Dryomov } 17734609245eSIlya Dryomov 17744609245eSIlya Dryomov static void cancel_map_check(struct ceph_osd_request *req) 17754609245eSIlya Dryomov { 17764609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 17774609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 17784609245eSIlya Dryomov 17794609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 17804609245eSIlya Dryomov 17814609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 17824609245eSIlya Dryomov if (!lookup_req) 17834609245eSIlya Dryomov return; 17844609245eSIlya Dryomov 17854609245eSIlya Dryomov WARN_ON(lookup_req != req); 17864609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 17874609245eSIlya Dryomov ceph_osdc_put_request(req); 17884609245eSIlya Dryomov } 17894609245eSIlya Dryomov 17905aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 17915aea3dcdSIlya Dryomov { 17925aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 17935aea3dcdSIlya Dryomov 17944609245eSIlya Dryomov cancel_map_check(req); 179545ee2c1dSIlya Dryomov finish_request(req); 1796c297eb42SIlya Dryomov complete_all(&req->r_done_completion); 1797c297eb42SIlya Dryomov ceph_osdc_put_request(req); 17985aea3dcdSIlya Dryomov } 17995aea3dcdSIlya Dryomov 18004609245eSIlya Dryomov static void check_pool_dne(struct ceph_osd_request *req) 18014609245eSIlya Dryomov { 18024609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 18034609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 18044609245eSIlya Dryomov 18054609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 18064609245eSIlya Dryomov WARN_ON(!map->epoch); 18074609245eSIlya Dryomov 18084609245eSIlya Dryomov if (req->r_attempts) { 18094609245eSIlya Dryomov /* 18104609245eSIlya Dryomov * We sent a request earlier, which means that 18114609245eSIlya Dryomov * previously the pool existed, and now it does not 18124609245eSIlya Dryomov * (i.e., it was deleted). 18134609245eSIlya Dryomov */ 18144609245eSIlya Dryomov req->r_map_dne_bound = map->epoch; 18154609245eSIlya Dryomov dout("%s req %p tid %llu pool disappeared\n", __func__, req, 18164609245eSIlya Dryomov req->r_tid); 18174609245eSIlya Dryomov } else { 18184609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, 18194609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, map->epoch); 18204609245eSIlya Dryomov } 18214609245eSIlya Dryomov 18224609245eSIlya Dryomov if (req->r_map_dne_bound) { 18234609245eSIlya Dryomov if (map->epoch >= req->r_map_dne_bound) { 18244609245eSIlya Dryomov /* we had a new enough map */ 18254609245eSIlya Dryomov pr_info_ratelimited("tid %llu pool does not exist\n", 18264609245eSIlya Dryomov req->r_tid); 18274609245eSIlya Dryomov complete_request(req, -ENOENT); 18284609245eSIlya Dryomov } 18294609245eSIlya Dryomov } else { 18304609245eSIlya Dryomov send_map_check(req); 18314609245eSIlya Dryomov } 18324609245eSIlya Dryomov } 18334609245eSIlya Dryomov 18344609245eSIlya Dryomov static void map_check_cb(struct ceph_mon_generic_request *greq) 18354609245eSIlya Dryomov { 18364609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 18374609245eSIlya Dryomov struct ceph_osd_request *req; 18384609245eSIlya Dryomov u64 tid = greq->private_data; 18394609245eSIlya Dryomov 18404609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 18414609245eSIlya Dryomov 18424609245eSIlya Dryomov down_write(&osdc->lock); 18434609245eSIlya Dryomov req = lookup_request_mc(&osdc->map_checks, tid); 18444609245eSIlya Dryomov if (!req) { 18454609245eSIlya Dryomov dout("%s tid %llu dne\n", __func__, tid); 18464609245eSIlya Dryomov goto out_unlock; 18474609245eSIlya Dryomov } 18484609245eSIlya Dryomov 18494609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, 18504609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, greq->u.newest); 18514609245eSIlya Dryomov if (!req->r_map_dne_bound) 18524609245eSIlya Dryomov req->r_map_dne_bound = greq->u.newest; 18534609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 18544609245eSIlya Dryomov check_pool_dne(req); 18554609245eSIlya Dryomov 18564609245eSIlya Dryomov ceph_osdc_put_request(req); 18574609245eSIlya Dryomov out_unlock: 18584609245eSIlya Dryomov up_write(&osdc->lock); 18594609245eSIlya Dryomov } 18604609245eSIlya Dryomov 18614609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req) 18624609245eSIlya Dryomov { 18634609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 18644609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 18654609245eSIlya Dryomov int ret; 18664609245eSIlya Dryomov 18674609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 18684609245eSIlya Dryomov 18694609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 18704609245eSIlya Dryomov if (lookup_req) { 18714609245eSIlya Dryomov WARN_ON(lookup_req != req); 18724609245eSIlya Dryomov return; 18734609245eSIlya Dryomov } 18744609245eSIlya Dryomov 18754609245eSIlya Dryomov ceph_osdc_get_request(req); 18764609245eSIlya Dryomov insert_request_mc(&osdc->map_checks, req); 18774609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 18784609245eSIlya Dryomov map_check_cb, req->r_tid); 18794609245eSIlya Dryomov WARN_ON(ret); 18804609245eSIlya Dryomov } 18814609245eSIlya Dryomov 18820bbfdfe8SIlya Dryomov /* 1883922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 1884922dab61SIlya Dryomov */ 1885922dab61SIlya Dryomov static void linger_release(struct kref *kref) 1886922dab61SIlya Dryomov { 1887922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1888922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 1889922dab61SIlya Dryomov 1890922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 1891922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 1892922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 1893922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 18944609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); 1895922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 1896b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lreq->pending_lworks)); 1897922dab61SIlya Dryomov WARN_ON(lreq->osd); 1898922dab61SIlya Dryomov 1899922dab61SIlya Dryomov if (lreq->reg_req) 1900922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 1901922dab61SIlya Dryomov if (lreq->ping_req) 1902922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 1903922dab61SIlya Dryomov target_destroy(&lreq->t); 1904922dab61SIlya Dryomov kfree(lreq); 1905922dab61SIlya Dryomov } 1906922dab61SIlya Dryomov 1907922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 1908922dab61SIlya Dryomov { 1909922dab61SIlya Dryomov if (lreq) 1910922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 1911922dab61SIlya Dryomov } 1912922dab61SIlya Dryomov 1913922dab61SIlya Dryomov static struct ceph_osd_linger_request * 1914922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 1915922dab61SIlya Dryomov { 1916922dab61SIlya Dryomov kref_get(&lreq->kref); 1917922dab61SIlya Dryomov return lreq; 1918922dab61SIlya Dryomov } 1919922dab61SIlya Dryomov 1920922dab61SIlya Dryomov static struct ceph_osd_linger_request * 1921922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 1922922dab61SIlya Dryomov { 1923922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 1924922dab61SIlya Dryomov 1925922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 1926922dab61SIlya Dryomov if (!lreq) 1927922dab61SIlya Dryomov return NULL; 1928922dab61SIlya Dryomov 1929922dab61SIlya Dryomov kref_init(&lreq->kref); 1930922dab61SIlya Dryomov mutex_init(&lreq->lock); 1931922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 1932922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 19334609245eSIlya Dryomov RB_CLEAR_NODE(&lreq->mc_node); 1934922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 1935b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lreq->pending_lworks); 1936922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 193719079203SIlya Dryomov init_completion(&lreq->notify_finish_wait); 1938922dab61SIlya Dryomov 1939922dab61SIlya Dryomov lreq->osdc = osdc; 1940922dab61SIlya Dryomov target_init(&lreq->t); 1941922dab61SIlya Dryomov 1942922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 1943922dab61SIlya Dryomov return lreq; 1944922dab61SIlya Dryomov } 1945922dab61SIlya Dryomov 1946922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 1947922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 19484609245eSIlya Dryomov DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) 1949922dab61SIlya Dryomov 1950922dab61SIlya Dryomov /* 1951922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 1952922dab61SIlya Dryomov * 1953922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 1954922dab61SIlya Dryomov */ 1955922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 1956922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 1957922dab61SIlya Dryomov { 1958922dab61SIlya Dryomov verify_osd_locked(osd); 1959922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 1960922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 1961922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 1962922dab61SIlya Dryomov 1963922dab61SIlya Dryomov if (!osd_homeless(osd)) 1964922dab61SIlya Dryomov __remove_osd_from_lru(osd); 1965922dab61SIlya Dryomov else 1966922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 1967922dab61SIlya Dryomov 1968922dab61SIlya Dryomov get_osd(osd); 1969922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 1970922dab61SIlya Dryomov lreq->osd = osd; 1971922dab61SIlya Dryomov } 1972922dab61SIlya Dryomov 1973922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 1974922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 1975922dab61SIlya Dryomov { 1976922dab61SIlya Dryomov verify_osd_locked(osd); 1977922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 1978922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 1979922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 1980922dab61SIlya Dryomov 1981922dab61SIlya Dryomov lreq->osd = NULL; 1982922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 1983922dab61SIlya Dryomov put_osd(osd); 1984922dab61SIlya Dryomov 1985922dab61SIlya Dryomov if (!osd_homeless(osd)) 1986922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 1987922dab61SIlya Dryomov else 1988922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 1989922dab61SIlya Dryomov } 1990922dab61SIlya Dryomov 1991922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 1992922dab61SIlya Dryomov { 1993922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 1994922dab61SIlya Dryomov 1995922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 1996922dab61SIlya Dryomov } 1997922dab61SIlya Dryomov 1998922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 1999922dab61SIlya Dryomov { 2000922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2001922dab61SIlya Dryomov bool registered; 2002922dab61SIlya Dryomov 2003922dab61SIlya Dryomov down_read(&osdc->lock); 2004922dab61SIlya Dryomov registered = __linger_registered(lreq); 2005922dab61SIlya Dryomov up_read(&osdc->lock); 2006922dab61SIlya Dryomov 2007922dab61SIlya Dryomov return registered; 2008922dab61SIlya Dryomov } 2009922dab61SIlya Dryomov 2010922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 2011922dab61SIlya Dryomov { 2012922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2013922dab61SIlya Dryomov 2014922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2015922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 2016922dab61SIlya Dryomov 2017922dab61SIlya Dryomov linger_get(lreq); 2018922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 2019922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 2020922dab61SIlya Dryomov } 2021922dab61SIlya Dryomov 2022922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 2023922dab61SIlya Dryomov { 2024922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2025922dab61SIlya Dryomov 2026922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2027922dab61SIlya Dryomov 2028922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 2029922dab61SIlya Dryomov linger_put(lreq); 2030922dab61SIlya Dryomov } 2031922dab61SIlya Dryomov 2032922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 2033922dab61SIlya Dryomov { 2034922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2035922dab61SIlya Dryomov 2036922dab61SIlya Dryomov WARN_ON(!req->r_linger); 2037922dab61SIlya Dryomov cancel_request(req); 2038922dab61SIlya Dryomov linger_put(lreq); 2039922dab61SIlya Dryomov } 2040922dab61SIlya Dryomov 2041922dab61SIlya Dryomov struct linger_work { 2042922dab61SIlya Dryomov struct work_struct work; 2043922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2044b07d3c4bSIlya Dryomov struct list_head pending_item; 2045b07d3c4bSIlya Dryomov unsigned long queued_stamp; 2046922dab61SIlya Dryomov 2047922dab61SIlya Dryomov union { 2048922dab61SIlya Dryomov struct { 2049922dab61SIlya Dryomov u64 notify_id; 2050922dab61SIlya Dryomov u64 notifier_id; 2051922dab61SIlya Dryomov void *payload; /* points into @msg front */ 2052922dab61SIlya Dryomov size_t payload_len; 2053922dab61SIlya Dryomov 2054922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 2055922dab61SIlya Dryomov } notify; 2056922dab61SIlya Dryomov struct { 2057922dab61SIlya Dryomov int err; 2058922dab61SIlya Dryomov } error; 2059922dab61SIlya Dryomov }; 2060922dab61SIlya Dryomov }; 2061922dab61SIlya Dryomov 2062922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 2063922dab61SIlya Dryomov work_func_t workfn) 2064922dab61SIlya Dryomov { 2065922dab61SIlya Dryomov struct linger_work *lwork; 2066922dab61SIlya Dryomov 2067922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 2068922dab61SIlya Dryomov if (!lwork) 2069922dab61SIlya Dryomov return NULL; 2070922dab61SIlya Dryomov 2071922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 2072b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lwork->pending_item); 2073922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 2074922dab61SIlya Dryomov 2075922dab61SIlya Dryomov return lwork; 2076922dab61SIlya Dryomov } 2077922dab61SIlya Dryomov 2078922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 2079922dab61SIlya Dryomov { 2080922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2081922dab61SIlya Dryomov 2082b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 2083b07d3c4bSIlya Dryomov list_del(&lwork->pending_item); 2084b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 2085b07d3c4bSIlya Dryomov 2086922dab61SIlya Dryomov linger_put(lreq); 2087922dab61SIlya Dryomov kfree(lwork); 2088922dab61SIlya Dryomov } 2089922dab61SIlya Dryomov 2090922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 2091922dab61SIlya Dryomov { 2092922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2093922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2094922dab61SIlya Dryomov 2095922dab61SIlya Dryomov verify_lreq_locked(lreq); 2096b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lwork->pending_item)); 2097b07d3c4bSIlya Dryomov 2098b07d3c4bSIlya Dryomov lwork->queued_stamp = jiffies; 2099b07d3c4bSIlya Dryomov list_add_tail(&lwork->pending_item, &lreq->pending_lworks); 2100922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 2101922dab61SIlya Dryomov } 2102922dab61SIlya Dryomov 2103922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 2104922dab61SIlya Dryomov { 2105922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2106922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2107922dab61SIlya Dryomov 2108922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2109922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2110922dab61SIlya Dryomov goto out; 2111922dab61SIlya Dryomov } 2112922dab61SIlya Dryomov 211319079203SIlya Dryomov WARN_ON(!lreq->is_watch); 2114922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 2115922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 2116922dab61SIlya Dryomov lwork->notify.payload_len); 2117922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 2118922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 2119922dab61SIlya Dryomov lwork->notify.payload_len); 2120922dab61SIlya Dryomov 2121922dab61SIlya Dryomov out: 2122922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 2123922dab61SIlya Dryomov lwork_free(lwork); 2124922dab61SIlya Dryomov } 2125922dab61SIlya Dryomov 2126922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 2127922dab61SIlya Dryomov { 2128922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2129922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2130922dab61SIlya Dryomov 2131922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2132922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2133922dab61SIlya Dryomov goto out; 2134922dab61SIlya Dryomov } 2135922dab61SIlya Dryomov 2136922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 2137922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 2138922dab61SIlya Dryomov 2139922dab61SIlya Dryomov out: 2140922dab61SIlya Dryomov lwork_free(lwork); 2141922dab61SIlya Dryomov } 2142922dab61SIlya Dryomov 2143922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 2144922dab61SIlya Dryomov { 2145922dab61SIlya Dryomov struct linger_work *lwork; 2146922dab61SIlya Dryomov 2147922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 2148922dab61SIlya Dryomov if (!lwork) { 2149922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 2150922dab61SIlya Dryomov return; 2151922dab61SIlya Dryomov } 2152922dab61SIlya Dryomov 2153922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 2154922dab61SIlya Dryomov lwork_queue(lwork); 2155922dab61SIlya Dryomov } 2156922dab61SIlya Dryomov 2157922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 2158922dab61SIlya Dryomov int result) 2159922dab61SIlya Dryomov { 2160922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 2161922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 2162922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 2163922dab61SIlya Dryomov } 2164922dab61SIlya Dryomov } 2165922dab61SIlya Dryomov 2166922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 2167922dab61SIlya Dryomov { 2168922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2169922dab61SIlya Dryomov 2170922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2171922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 2172922dab61SIlya Dryomov lreq->linger_id, req->r_result); 2173922dab61SIlya Dryomov WARN_ON(!__linger_registered(lreq)); 2174922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 2175922dab61SIlya Dryomov lreq->committed = true; 2176922dab61SIlya Dryomov 217719079203SIlya Dryomov if (!lreq->is_watch) { 217819079203SIlya Dryomov struct ceph_osd_data *osd_data = 217919079203SIlya Dryomov osd_req_op_data(req, 0, notify, response_data); 218019079203SIlya Dryomov void *p = page_address(osd_data->pages[0]); 218119079203SIlya Dryomov 218219079203SIlya Dryomov WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || 218319079203SIlya Dryomov osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); 218419079203SIlya Dryomov 218519079203SIlya Dryomov /* make note of the notify_id */ 218619079203SIlya Dryomov if (req->r_ops[0].outdata_len >= sizeof(u64)) { 218719079203SIlya Dryomov lreq->notify_id = ceph_decode_64(&p); 218819079203SIlya Dryomov dout("lreq %p notify_id %llu\n", lreq, 218919079203SIlya Dryomov lreq->notify_id); 219019079203SIlya Dryomov } else { 219119079203SIlya Dryomov dout("lreq %p no notify_id\n", lreq); 219219079203SIlya Dryomov } 219319079203SIlya Dryomov } 219419079203SIlya Dryomov 2195922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2196922dab61SIlya Dryomov linger_put(lreq); 2197922dab61SIlya Dryomov } 2198922dab61SIlya Dryomov 2199922dab61SIlya Dryomov static int normalize_watch_error(int err) 2200922dab61SIlya Dryomov { 2201922dab61SIlya Dryomov /* 2202922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 2203922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 2204922dab61SIlya Dryomov * the delete appear the same to the user. 2205922dab61SIlya Dryomov */ 2206922dab61SIlya Dryomov if (err == -ENOENT) 2207922dab61SIlya Dryomov err = -ENOTCONN; 2208922dab61SIlya Dryomov 2209922dab61SIlya Dryomov return err; 2210922dab61SIlya Dryomov } 2211922dab61SIlya Dryomov 2212922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 2213922dab61SIlya Dryomov { 2214922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2215922dab61SIlya Dryomov 2216922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2217922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 2218922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 2219922dab61SIlya Dryomov if (req->r_result < 0) { 2220922dab61SIlya Dryomov if (!lreq->last_error) { 2221922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2222922dab61SIlya Dryomov queue_watch_error(lreq); 2223922dab61SIlya Dryomov } 2224922dab61SIlya Dryomov } 2225922dab61SIlya Dryomov 2226922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2227922dab61SIlya Dryomov linger_put(lreq); 2228922dab61SIlya Dryomov } 2229922dab61SIlya Dryomov 2230922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 2231922dab61SIlya Dryomov { 2232922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->reg_req; 2233922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2234922dab61SIlya Dryomov 2235922dab61SIlya Dryomov verify_osdc_wrlocked(req->r_osdc); 2236922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2237922dab61SIlya Dryomov 2238922dab61SIlya Dryomov if (req->r_osd) 2239922dab61SIlya Dryomov cancel_linger_request(req); 2240922dab61SIlya Dryomov 2241922dab61SIlya Dryomov request_reinit(req); 2242922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 2243922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 2244922dab61SIlya Dryomov req->r_flags = lreq->t.flags; 2245922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 2246922dab61SIlya Dryomov 2247922dab61SIlya Dryomov mutex_lock(&lreq->lock); 224819079203SIlya Dryomov if (lreq->is_watch && lreq->committed) { 2249922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2250922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id); 2251922dab61SIlya Dryomov op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; 2252922dab61SIlya Dryomov op->watch.gen = ++lreq->register_gen; 2253922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 2254922dab61SIlya Dryomov op->watch.gen); 2255922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 2256922dab61SIlya Dryomov } else { 225719079203SIlya Dryomov if (!lreq->is_watch) 225819079203SIlya Dryomov lreq->notify_id = 0; 225919079203SIlya Dryomov else 2260922dab61SIlya Dryomov WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); 2261922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 2262922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 2263922dab61SIlya Dryomov } 2264922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2265922dab61SIlya Dryomov 2266922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2267922dab61SIlya Dryomov req->r_linger = true; 2268922dab61SIlya Dryomov 2269922dab61SIlya Dryomov submit_request(req, true); 2270922dab61SIlya Dryomov } 2271922dab61SIlya Dryomov 2272922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 2273922dab61SIlya Dryomov { 2274922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2275922dab61SIlya Dryomov 2276922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2277922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 2278922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 2279922dab61SIlya Dryomov lreq->last_error); 2280922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 2281b07d3c4bSIlya Dryomov if (!req->r_result) { 2282b07d3c4bSIlya Dryomov lreq->watch_valid_thru = lreq->ping_sent; 2283b07d3c4bSIlya Dryomov } else if (!lreq->last_error) { 2284922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2285922dab61SIlya Dryomov queue_watch_error(lreq); 2286922dab61SIlya Dryomov } 2287922dab61SIlya Dryomov } else { 2288922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 2289922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 2290922dab61SIlya Dryomov } 2291922dab61SIlya Dryomov 2292922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2293922dab61SIlya Dryomov linger_put(lreq); 2294922dab61SIlya Dryomov } 2295922dab61SIlya Dryomov 2296922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 2297922dab61SIlya Dryomov { 2298922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2299922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->ping_req; 2300922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2301922dab61SIlya Dryomov 2302b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 2303922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 2304922dab61SIlya Dryomov return; 2305922dab61SIlya Dryomov } 2306922dab61SIlya Dryomov 2307922dab61SIlya Dryomov lreq->ping_sent = jiffies; 2308922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 2309922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 2310922dab61SIlya Dryomov lreq->register_gen); 2311922dab61SIlya Dryomov 2312922dab61SIlya Dryomov if (req->r_osd) 2313922dab61SIlya Dryomov cancel_linger_request(req); 2314922dab61SIlya Dryomov 2315922dab61SIlya Dryomov request_reinit(req); 2316922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 2317922dab61SIlya Dryomov 2318922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2319922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id || 2320922dab61SIlya Dryomov op->watch.op != CEPH_OSD_WATCH_OP_PING); 2321922dab61SIlya Dryomov op->watch.gen = lreq->register_gen; 2322922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 2323922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2324922dab61SIlya Dryomov req->r_linger = true; 2325922dab61SIlya Dryomov 2326922dab61SIlya Dryomov ceph_osdc_get_request(req); 2327922dab61SIlya Dryomov account_request(req); 2328922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 2329922dab61SIlya Dryomov link_request(lreq->osd, req); 2330922dab61SIlya Dryomov send_request(req); 2331922dab61SIlya Dryomov } 2332922dab61SIlya Dryomov 2333922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 2334922dab61SIlya Dryomov { 2335922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2336922dab61SIlya Dryomov struct ceph_osd *osd; 2337922dab61SIlya Dryomov 2338922dab61SIlya Dryomov calc_target(osdc, &lreq->t, &lreq->last_force_resend, false); 2339922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 2340922dab61SIlya Dryomov link_linger(osd, lreq); 2341922dab61SIlya Dryomov 2342922dab61SIlya Dryomov send_linger(lreq); 2343922dab61SIlya Dryomov } 2344922dab61SIlya Dryomov 23454609245eSIlya Dryomov static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) 23464609245eSIlya Dryomov { 23474609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 23484609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 23494609245eSIlya Dryomov 23504609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 23514609245eSIlya Dryomov 23524609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 23534609245eSIlya Dryomov lreq->linger_id); 23544609245eSIlya Dryomov if (!lookup_lreq) 23554609245eSIlya Dryomov return; 23564609245eSIlya Dryomov 23574609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 23584609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 23594609245eSIlya Dryomov linger_put(lreq); 23604609245eSIlya Dryomov } 23614609245eSIlya Dryomov 2362922dab61SIlya Dryomov /* 2363922dab61SIlya Dryomov * @lreq has to be both registered and linked. 2364922dab61SIlya Dryomov */ 2365922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 2366922dab61SIlya Dryomov { 236719079203SIlya Dryomov if (lreq->is_watch && lreq->ping_req->r_osd) 2368922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 2369922dab61SIlya Dryomov if (lreq->reg_req->r_osd) 2370922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 23714609245eSIlya Dryomov cancel_linger_map_check(lreq); 2372922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 2373922dab61SIlya Dryomov linger_unregister(lreq); 2374922dab61SIlya Dryomov } 2375922dab61SIlya Dryomov 2376922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 2377922dab61SIlya Dryomov { 2378922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2379922dab61SIlya Dryomov 2380922dab61SIlya Dryomov down_write(&osdc->lock); 2381922dab61SIlya Dryomov if (__linger_registered(lreq)) 2382922dab61SIlya Dryomov __linger_cancel(lreq); 2383922dab61SIlya Dryomov up_write(&osdc->lock); 2384922dab61SIlya Dryomov } 2385922dab61SIlya Dryomov 23864609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq); 23874609245eSIlya Dryomov 23884609245eSIlya Dryomov static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) 23894609245eSIlya Dryomov { 23904609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 23914609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 23924609245eSIlya Dryomov 23934609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 23944609245eSIlya Dryomov WARN_ON(!map->epoch); 23954609245eSIlya Dryomov 23964609245eSIlya Dryomov if (lreq->register_gen) { 23974609245eSIlya Dryomov lreq->map_dne_bound = map->epoch; 23984609245eSIlya Dryomov dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, 23994609245eSIlya Dryomov lreq, lreq->linger_id); 24004609245eSIlya Dryomov } else { 24014609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", 24024609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 24034609245eSIlya Dryomov map->epoch); 24044609245eSIlya Dryomov } 24054609245eSIlya Dryomov 24064609245eSIlya Dryomov if (lreq->map_dne_bound) { 24074609245eSIlya Dryomov if (map->epoch >= lreq->map_dne_bound) { 24084609245eSIlya Dryomov /* we had a new enough map */ 24094609245eSIlya Dryomov pr_info("linger_id %llu pool does not exist\n", 24104609245eSIlya Dryomov lreq->linger_id); 24114609245eSIlya Dryomov linger_reg_commit_complete(lreq, -ENOENT); 24124609245eSIlya Dryomov __linger_cancel(lreq); 24134609245eSIlya Dryomov } 24144609245eSIlya Dryomov } else { 24154609245eSIlya Dryomov send_linger_map_check(lreq); 24164609245eSIlya Dryomov } 24174609245eSIlya Dryomov } 24184609245eSIlya Dryomov 24194609245eSIlya Dryomov static void linger_map_check_cb(struct ceph_mon_generic_request *greq) 24204609245eSIlya Dryomov { 24214609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 24224609245eSIlya Dryomov struct ceph_osd_linger_request *lreq; 24234609245eSIlya Dryomov u64 linger_id = greq->private_data; 24244609245eSIlya Dryomov 24254609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 24264609245eSIlya Dryomov 24274609245eSIlya Dryomov down_write(&osdc->lock); 24284609245eSIlya Dryomov lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); 24294609245eSIlya Dryomov if (!lreq) { 24304609245eSIlya Dryomov dout("%s linger_id %llu dne\n", __func__, linger_id); 24314609245eSIlya Dryomov goto out_unlock; 24324609245eSIlya Dryomov } 24334609245eSIlya Dryomov 24344609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", 24354609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 24364609245eSIlya Dryomov greq->u.newest); 24374609245eSIlya Dryomov if (!lreq->map_dne_bound) 24384609245eSIlya Dryomov lreq->map_dne_bound = greq->u.newest; 24394609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 24404609245eSIlya Dryomov check_linger_pool_dne(lreq); 24414609245eSIlya Dryomov 24424609245eSIlya Dryomov linger_put(lreq); 24434609245eSIlya Dryomov out_unlock: 24444609245eSIlya Dryomov up_write(&osdc->lock); 24454609245eSIlya Dryomov } 24464609245eSIlya Dryomov 24474609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq) 24484609245eSIlya Dryomov { 24494609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 24504609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 24514609245eSIlya Dryomov int ret; 24524609245eSIlya Dryomov 24534609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 24544609245eSIlya Dryomov 24554609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 24564609245eSIlya Dryomov lreq->linger_id); 24574609245eSIlya Dryomov if (lookup_lreq) { 24584609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 24594609245eSIlya Dryomov return; 24604609245eSIlya Dryomov } 24614609245eSIlya Dryomov 24624609245eSIlya Dryomov linger_get(lreq); 24634609245eSIlya Dryomov insert_linger_mc(&osdc->linger_map_checks, lreq); 24644609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 24654609245eSIlya Dryomov linger_map_check_cb, lreq->linger_id); 24664609245eSIlya Dryomov WARN_ON(ret); 24674609245eSIlya Dryomov } 24684609245eSIlya Dryomov 2469922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 2470922dab61SIlya Dryomov { 2471922dab61SIlya Dryomov int ret; 2472922dab61SIlya Dryomov 2473922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2474922dab61SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); 2475922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 2476922dab61SIlya Dryomov } 2477922dab61SIlya Dryomov 247819079203SIlya Dryomov static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) 247919079203SIlya Dryomov { 248019079203SIlya Dryomov int ret; 248119079203SIlya Dryomov 248219079203SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 248319079203SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); 248419079203SIlya Dryomov return ret ?: lreq->notify_finish_error; 248519079203SIlya Dryomov } 248619079203SIlya Dryomov 2487922dab61SIlya Dryomov /* 2488fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 2489fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 2490fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 2491fbca9635SIlya Dryomov * reset is detected. 24923d14c5d2SYehuda Sadeh */ 24933d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 24943d14c5d2SYehuda Sadeh { 24953d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 24963d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 2497a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 24985aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 24995aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 25005aea3dcdSIlya Dryomov struct rb_node *n, *p; 25013d14c5d2SYehuda Sadeh 25025aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 25035aea3dcdSIlya Dryomov down_write(&osdc->lock); 25043d14c5d2SYehuda Sadeh 25053d14c5d2SYehuda Sadeh /* 25063d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 25073d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 25083d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 25093d14c5d2SYehuda Sadeh */ 25105aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 25115aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 25125aea3dcdSIlya Dryomov bool found = false; 25133d14c5d2SYehuda Sadeh 25145aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 25155aea3dcdSIlya Dryomov struct ceph_osd_request *req = 25165aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 25175aea3dcdSIlya Dryomov 25185aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 25195aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 25205aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 25215aea3dcdSIlya Dryomov found = true; 25225aea3dcdSIlya Dryomov } 25235aea3dcdSIlya Dryomov } 2524922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 2525922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2526922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 2527922dab61SIlya Dryomov 2528922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 2529922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 2530922dab61SIlya Dryomov found = true; 2531922dab61SIlya Dryomov 2532922dab61SIlya Dryomov mutex_lock(&lreq->lock); 253319079203SIlya Dryomov if (lreq->is_watch && lreq->committed && !lreq->last_error) 2534922dab61SIlya Dryomov send_linger_ping(lreq); 2535922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2536922dab61SIlya Dryomov } 25375aea3dcdSIlya Dryomov 25385aea3dcdSIlya Dryomov if (found) 25393d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 25403d14c5d2SYehuda Sadeh } 25415aea3dcdSIlya Dryomov 25425aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 25435aea3dcdSIlya Dryomov maybe_request_map(osdc); 25445aea3dcdSIlya Dryomov 25453d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 25465aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 25475aea3dcdSIlya Dryomov struct ceph_osd, 25483d14c5d2SYehuda Sadeh o_keepalive_item); 25493d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 25503d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 25513d14c5d2SYehuda Sadeh } 25523d14c5d2SYehuda Sadeh 25535aea3dcdSIlya Dryomov up_write(&osdc->lock); 2554fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 2555fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 25563d14c5d2SYehuda Sadeh } 25573d14c5d2SYehuda Sadeh 25583d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 25593d14c5d2SYehuda Sadeh { 25603d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 25613d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 25623d14c5d2SYehuda Sadeh osds_timeout_work.work); 2563a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 256442a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 25653d14c5d2SYehuda Sadeh 256642a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 25675aea3dcdSIlya Dryomov down_write(&osdc->lock); 256842a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 256942a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 257042a2c09fSIlya Dryomov break; 257142a2c09fSIlya Dryomov 25725aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 2573922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 25745aea3dcdSIlya Dryomov close_osd(osd); 257542a2c09fSIlya Dryomov } 257642a2c09fSIlya Dryomov 25775aea3dcdSIlya Dryomov up_write(&osdc->lock); 25783d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 25793d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 25803d14c5d2SYehuda Sadeh } 25813d14c5d2SYehuda Sadeh 2582205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 2583205ee118SIlya Dryomov struct ceph_object_locator *oloc) 2584205ee118SIlya Dryomov { 2585205ee118SIlya Dryomov u8 struct_v, struct_cv; 2586205ee118SIlya Dryomov u32 len; 2587205ee118SIlya Dryomov void *struct_end; 2588205ee118SIlya Dryomov int ret = 0; 2589205ee118SIlya Dryomov 2590205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 2591205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 2592205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 2593205ee118SIlya Dryomov if (struct_v < 3) { 2594205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 2595205ee118SIlya Dryomov struct_v, struct_cv); 2596205ee118SIlya Dryomov goto e_inval; 2597205ee118SIlya Dryomov } 2598205ee118SIlya Dryomov if (struct_cv > 6) { 2599205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 2600205ee118SIlya Dryomov struct_v, struct_cv); 2601205ee118SIlya Dryomov goto e_inval; 2602205ee118SIlya Dryomov } 2603205ee118SIlya Dryomov len = ceph_decode_32(p); 2604205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 2605205ee118SIlya Dryomov struct_end = *p + len; 2606205ee118SIlya Dryomov 2607205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 2608205ee118SIlya Dryomov *p += 4; /* skip preferred */ 2609205ee118SIlya Dryomov 2610205ee118SIlya Dryomov len = ceph_decode_32(p); 2611205ee118SIlya Dryomov if (len > 0) { 2612205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 2613205ee118SIlya Dryomov goto e_inval; 2614205ee118SIlya Dryomov } 2615205ee118SIlya Dryomov 2616205ee118SIlya Dryomov if (struct_v >= 5) { 2617cd08e0a2SYan, Zheng bool changed = false; 2618cd08e0a2SYan, Zheng 2619205ee118SIlya Dryomov len = ceph_decode_32(p); 2620205ee118SIlya Dryomov if (len > 0) { 262130c156d9SYan, Zheng ceph_decode_need(p, end, len, e_inval); 2622cd08e0a2SYan, Zheng if (!oloc->pool_ns || 2623cd08e0a2SYan, Zheng ceph_compare_string(oloc->pool_ns, *p, len)) 2624cd08e0a2SYan, Zheng changed = true; 262530c156d9SYan, Zheng *p += len; 2626cd08e0a2SYan, Zheng } else { 2627cd08e0a2SYan, Zheng if (oloc->pool_ns) 2628cd08e0a2SYan, Zheng changed = true; 2629cd08e0a2SYan, Zheng } 2630cd08e0a2SYan, Zheng if (changed) { 2631cd08e0a2SYan, Zheng /* redirect changes namespace */ 2632cd08e0a2SYan, Zheng pr_warn("ceph_object_locator::nspace is changed\n"); 2633cd08e0a2SYan, Zheng goto e_inval; 2634205ee118SIlya Dryomov } 2635205ee118SIlya Dryomov } 2636205ee118SIlya Dryomov 2637205ee118SIlya Dryomov if (struct_v >= 6) { 2638205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 2639205ee118SIlya Dryomov if (hash != -1) { 2640205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 2641205ee118SIlya Dryomov goto e_inval; 2642205ee118SIlya Dryomov } 2643205ee118SIlya Dryomov } 2644205ee118SIlya Dryomov 2645205ee118SIlya Dryomov /* skip the rest */ 2646205ee118SIlya Dryomov *p = struct_end; 2647205ee118SIlya Dryomov out: 2648205ee118SIlya Dryomov return ret; 2649205ee118SIlya Dryomov 2650205ee118SIlya Dryomov e_inval: 2651205ee118SIlya Dryomov ret = -EINVAL; 2652205ee118SIlya Dryomov goto out; 2653205ee118SIlya Dryomov } 2654205ee118SIlya Dryomov 2655205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 2656205ee118SIlya Dryomov struct ceph_request_redirect *redir) 2657205ee118SIlya Dryomov { 2658205ee118SIlya Dryomov u8 struct_v, struct_cv; 2659205ee118SIlya Dryomov u32 len; 2660205ee118SIlya Dryomov void *struct_end; 2661205ee118SIlya Dryomov int ret; 2662205ee118SIlya Dryomov 2663205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 2664205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 2665205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 2666205ee118SIlya Dryomov if (struct_cv > 1) { 2667205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 2668205ee118SIlya Dryomov struct_v, struct_cv); 2669205ee118SIlya Dryomov goto e_inval; 2670205ee118SIlya Dryomov } 2671205ee118SIlya Dryomov len = ceph_decode_32(p); 2672205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 2673205ee118SIlya Dryomov struct_end = *p + len; 2674205ee118SIlya Dryomov 2675205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 2676205ee118SIlya Dryomov if (ret) 2677205ee118SIlya Dryomov goto out; 2678205ee118SIlya Dryomov 2679205ee118SIlya Dryomov len = ceph_decode_32(p); 2680205ee118SIlya Dryomov if (len > 0) { 2681205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 2682205ee118SIlya Dryomov goto e_inval; 2683205ee118SIlya Dryomov } 2684205ee118SIlya Dryomov 2685205ee118SIlya Dryomov len = ceph_decode_32(p); 2686205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 2687205ee118SIlya Dryomov 2688205ee118SIlya Dryomov /* skip the rest */ 2689205ee118SIlya Dryomov *p = struct_end; 2690205ee118SIlya Dryomov out: 2691205ee118SIlya Dryomov return ret; 2692205ee118SIlya Dryomov 2693205ee118SIlya Dryomov e_inval: 2694205ee118SIlya Dryomov ret = -EINVAL; 2695205ee118SIlya Dryomov goto out; 2696205ee118SIlya Dryomov } 2697205ee118SIlya Dryomov 2698fe5da05eSIlya Dryomov struct MOSDOpReply { 2699fe5da05eSIlya Dryomov struct ceph_pg pgid; 2700fe5da05eSIlya Dryomov u64 flags; 2701fe5da05eSIlya Dryomov int result; 2702fe5da05eSIlya Dryomov u32 epoch; 2703fe5da05eSIlya Dryomov int num_ops; 2704fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 2705fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 2706fe5da05eSIlya Dryomov int retry_attempt; 2707fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 2708fe5da05eSIlya Dryomov u64 user_version; 2709fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 2710fe5da05eSIlya Dryomov }; 271125845472SSage Weil 2712fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 27133d14c5d2SYehuda Sadeh { 2714fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 2715fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 2716fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 2717fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 2718b0b31a8fSIlya Dryomov u8 decode_redir; 2719fe5da05eSIlya Dryomov u32 len; 2720fe5da05eSIlya Dryomov int ret; 2721fe5da05eSIlya Dryomov int i; 27223d14c5d2SYehuda Sadeh 2723fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 2724fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 2725fe5da05eSIlya Dryomov p += len; /* skip oid */ 27261b83bef2SSage Weil 2727fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 2728fe5da05eSIlya Dryomov if (ret) 2729fe5da05eSIlya Dryomov return ret; 27301b83bef2SSage Weil 2731fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 2732fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 2733fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 2734fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 2735fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 2736fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 27371b83bef2SSage Weil 2738fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 2739fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 2740fe5da05eSIlya Dryomov goto e_inval; 27411b83bef2SSage Weil 2742fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 2743fe5da05eSIlya Dryomov e_inval); 2744fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 27451b83bef2SSage Weil struct ceph_osd_op *op = p; 27461b83bef2SSage Weil 2747fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 27481b83bef2SSage Weil p += sizeof(*op); 27491b83bef2SSage Weil } 2750fe5da05eSIlya Dryomov 2751fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 2752fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 2753fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 2754fe5da05eSIlya Dryomov 2755fe5da05eSIlya Dryomov if (version >= 5) { 2756fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 2757fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 2758fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 2759fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 2760fe5da05eSIlya Dryomov } else { 2761fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 2762fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 27631b83bef2SSage Weil } 27641b83bef2SSage Weil 2765fe5da05eSIlya Dryomov if (version >= 6) { 2766fe5da05eSIlya Dryomov if (version >= 7) 2767fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 2768b0b31a8fSIlya Dryomov else 2769b0b31a8fSIlya Dryomov decode_redir = 1; 2770b0b31a8fSIlya Dryomov } else { 2771b0b31a8fSIlya Dryomov decode_redir = 0; 2772b0b31a8fSIlya Dryomov } 2773b0b31a8fSIlya Dryomov 2774b0b31a8fSIlya Dryomov if (decode_redir) { 2775fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 2776fe5da05eSIlya Dryomov if (ret) 2777fe5da05eSIlya Dryomov return ret; 2778205ee118SIlya Dryomov } else { 2779fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 2780205ee118SIlya Dryomov } 2781205ee118SIlya Dryomov 2782fe5da05eSIlya Dryomov return 0; 2783205ee118SIlya Dryomov 2784fe5da05eSIlya Dryomov e_inval: 2785fe5da05eSIlya Dryomov return -EINVAL; 2786fe5da05eSIlya Dryomov } 2787fe5da05eSIlya Dryomov 2788fe5da05eSIlya Dryomov /* 2789fe5da05eSIlya Dryomov * We are done with @req if 2790fe5da05eSIlya Dryomov * - @m is a safe reply, or 2791fe5da05eSIlya Dryomov * - @m is an unsafe reply and we didn't want a safe one 2792fe5da05eSIlya Dryomov */ 2793fe5da05eSIlya Dryomov static bool done_request(const struct ceph_osd_request *req, 2794fe5da05eSIlya Dryomov const struct MOSDOpReply *m) 2795fe5da05eSIlya Dryomov { 2796fe5da05eSIlya Dryomov return (m->result < 0 || 2797fe5da05eSIlya Dryomov (m->flags & CEPH_OSD_FLAG_ONDISK) || 2798fe5da05eSIlya Dryomov !(req->r_flags & CEPH_OSD_FLAG_ONDISK)); 2799fe5da05eSIlya Dryomov } 2800fe5da05eSIlya Dryomov 2801fe5da05eSIlya Dryomov /* 2802fe5da05eSIlya Dryomov * handle osd op reply. either call the callback if it is specified, 2803fe5da05eSIlya Dryomov * or do the completion to wake up the waiting thread. 2804fe5da05eSIlya Dryomov * 2805fe5da05eSIlya Dryomov * ->r_unsafe_callback is set? yes no 2806fe5da05eSIlya Dryomov * 2807fe5da05eSIlya Dryomov * first reply is OK (needed r_cb/r_completion, r_cb/r_completion, 2808c297eb42SIlya Dryomov * any or needed/got safe) r_done_completion r_done_completion 2809fe5da05eSIlya Dryomov * 2810fe5da05eSIlya Dryomov * first reply is unsafe r_unsafe_cb(true) (nothing) 2811fe5da05eSIlya Dryomov * 2812fe5da05eSIlya Dryomov * when we get the safe reply r_unsafe_cb(false), r_cb/r_completion, 2813c297eb42SIlya Dryomov * r_done_completion r_done_completion 2814fe5da05eSIlya Dryomov */ 28155aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 2816fe5da05eSIlya Dryomov { 28175aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 2818fe5da05eSIlya Dryomov struct ceph_osd_request *req; 2819fe5da05eSIlya Dryomov struct MOSDOpReply m; 2820fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 2821fe5da05eSIlya Dryomov u32 data_len = 0; 2822fe5da05eSIlya Dryomov bool already_acked; 2823fe5da05eSIlya Dryomov int ret; 2824fe5da05eSIlya Dryomov int i; 2825fe5da05eSIlya Dryomov 2826fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 2827fe5da05eSIlya Dryomov 28285aea3dcdSIlya Dryomov down_read(&osdc->lock); 28295aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 28305aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 28315aea3dcdSIlya Dryomov goto out_unlock_osdc; 2832fe5da05eSIlya Dryomov } 28335aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 28345aea3dcdSIlya Dryomov 28355aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 28365aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 28375aea3dcdSIlya Dryomov if (!req) { 28385aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 28395aea3dcdSIlya Dryomov goto out_unlock_session; 28405aea3dcdSIlya Dryomov } 2841fe5da05eSIlya Dryomov 2842cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns; 2843fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 2844cd08e0a2SYan, Zheng m.redirect.oloc.pool_ns = NULL; 2845fe5da05eSIlya Dryomov if (ret) { 2846fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 2847fe5da05eSIlya Dryomov req->r_tid, ret); 2848fe5da05eSIlya Dryomov ceph_msg_dump(msg); 2849fe5da05eSIlya Dryomov goto fail_request; 2850fe5da05eSIlya Dryomov } 2851fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 2852fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 2853fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 2854fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 2855fe5da05eSIlya Dryomov 2856fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 2857fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 2858fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 2859fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 2860fe5da05eSIlya Dryomov req->r_attempts - 1); 28615aea3dcdSIlya Dryomov goto out_unlock_session; 2862fe5da05eSIlya Dryomov } 2863fe5da05eSIlya Dryomov } else { 2864fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 2865fe5da05eSIlya Dryomov } 2866fe5da05eSIlya Dryomov 2867fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 2868fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 2869fe5da05eSIlya Dryomov m.redirect.oloc.pool); 28705aea3dcdSIlya Dryomov unlink_request(osd, req); 28715aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 2872205ee118SIlya Dryomov 287330c156d9SYan, Zheng /* 287430c156d9SYan, Zheng * Not ceph_oloc_copy() - changing pool_ns is not 287530c156d9SYan, Zheng * supported. 287630c156d9SYan, Zheng */ 287730c156d9SYan, Zheng req->r_t.target_oloc.pool = m.redirect.oloc.pool; 28785aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; 28795aea3dcdSIlya Dryomov req->r_tid = 0; 28805aea3dcdSIlya Dryomov __submit_request(req, false); 28815aea3dcdSIlya Dryomov goto out_unlock_osdc; 2882205ee118SIlya Dryomov } 2883205ee118SIlya Dryomov 2884fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 2885fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 2886fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 2887fe5da05eSIlya Dryomov goto fail_request; 2888fe5da05eSIlya Dryomov } 2889fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 2890fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 2891fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 2892fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 2893fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 2894fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 2895fe5da05eSIlya Dryomov } 2896fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 2897fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 2898fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 2899fe5da05eSIlya Dryomov goto fail_request; 2900fe5da05eSIlya Dryomov } 2901fe5da05eSIlya Dryomov dout("%s req %p tid %llu acked %d result %d data_len %u\n", __func__, 2902fe5da05eSIlya Dryomov req, req->r_tid, req->r_got_reply, m.result, data_len); 29033d14c5d2SYehuda Sadeh 2904fe5da05eSIlya Dryomov already_acked = req->r_got_reply; 2905fe5da05eSIlya Dryomov if (!already_acked) { 2906fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 2907fe5da05eSIlya Dryomov req->r_replay_version = m.replay_version; /* struct */ 2908fe5da05eSIlya Dryomov req->r_got_reply = true; 2909fe5da05eSIlya Dryomov } else if (!(m.flags & CEPH_OSD_FLAG_ONDISK)) { 2910fe5da05eSIlya Dryomov dout("req %p tid %llu dup ack\n", req, req->r_tid); 29115aea3dcdSIlya Dryomov goto out_unlock_session; 29123d14c5d2SYehuda Sadeh } 29133d14c5d2SYehuda Sadeh 2914fe5da05eSIlya Dryomov if (done_request(req, &m)) { 291545ee2c1dSIlya Dryomov finish_request(req); 2916fe5da05eSIlya Dryomov if (req->r_linger) { 2917fe5da05eSIlya Dryomov WARN_ON(req->r_unsafe_callback); 2918922dab61SIlya Dryomov dout("req %p tid %llu cb (locked)\n", req, req->r_tid); 2919922dab61SIlya Dryomov __complete_request(req); 2920fe5da05eSIlya Dryomov } 2921fe5da05eSIlya Dryomov } 29223d14c5d2SYehuda Sadeh 29235aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 29245aea3dcdSIlya Dryomov up_read(&osdc->lock); 29253d14c5d2SYehuda Sadeh 2926fe5da05eSIlya Dryomov if (done_request(req, &m)) { 2927fe5da05eSIlya Dryomov if (already_acked && req->r_unsafe_callback) { 2928fe5da05eSIlya Dryomov dout("req %p tid %llu safe-cb\n", req, req->r_tid); 292961c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 2930922dab61SIlya Dryomov } else if (!req->r_linger) { 2931fe5da05eSIlya Dryomov dout("req %p tid %llu cb\n", req, req->r_tid); 2932fe5da05eSIlya Dryomov __complete_request(req); 293361c5d6bfSYan, Zheng } 2934c297eb42SIlya Dryomov complete_all(&req->r_done_completion); 2935dc045a91SIlya Dryomov ceph_osdc_put_request(req); 2936fe5da05eSIlya Dryomov } else { 2937fe5da05eSIlya Dryomov if (req->r_unsafe_callback) { 2938fe5da05eSIlya Dryomov dout("req %p tid %llu unsafe-cb\n", req, req->r_tid); 2939fe5da05eSIlya Dryomov req->r_unsafe_callback(req, true); 2940fe5da05eSIlya Dryomov } else { 2941fe5da05eSIlya Dryomov WARN_ON(1); 2942fe5da05eSIlya Dryomov } 2943fe5da05eSIlya Dryomov } 29443d14c5d2SYehuda Sadeh 29453d14c5d2SYehuda Sadeh return; 2946fe5da05eSIlya Dryomov 2947fe5da05eSIlya Dryomov fail_request: 29484609245eSIlya Dryomov complete_request(req, -EIO); 29495aea3dcdSIlya Dryomov out_unlock_session: 29505aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 29515aea3dcdSIlya Dryomov out_unlock_osdc: 29525aea3dcdSIlya Dryomov up_read(&osdc->lock); 29533d14c5d2SYehuda Sadeh } 29543d14c5d2SYehuda Sadeh 295542c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 295642c1b124SIlya Dryomov { 295742c1b124SIlya Dryomov struct rb_node *n; 295842c1b124SIlya Dryomov 295942c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 296042c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 296142c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 296242c1b124SIlya Dryomov 296342c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 296442c1b124SIlya Dryomov } 296542c1b124SIlya Dryomov } 296642c1b124SIlya Dryomov 29675aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 29683d14c5d2SYehuda Sadeh { 29695aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 29703d14c5d2SYehuda Sadeh 29715aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 29725aea3dcdSIlya Dryomov if (!pi) 29735aea3dcdSIlya Dryomov return false; 29743d14c5d2SYehuda Sadeh 29755aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 29763d14c5d2SYehuda Sadeh } 29773d14c5d2SYehuda Sadeh 2978922dab61SIlya Dryomov static enum calc_target_result 2979922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 2980922dab61SIlya Dryomov { 2981922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2982922dab61SIlya Dryomov enum calc_target_result ct_res; 2983922dab61SIlya Dryomov 2984922dab61SIlya Dryomov ct_res = calc_target(osdc, &lreq->t, &lreq->last_force_resend, true); 2985922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 2986922dab61SIlya Dryomov struct ceph_osd *osd; 2987922dab61SIlya Dryomov 2988922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 2989922dab61SIlya Dryomov if (osd != lreq->osd) { 2990922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 2991922dab61SIlya Dryomov link_linger(osd, lreq); 2992922dab61SIlya Dryomov } 2993922dab61SIlya Dryomov } 2994922dab61SIlya Dryomov 2995922dab61SIlya Dryomov return ct_res; 2996922dab61SIlya Dryomov } 2997922dab61SIlya Dryomov 29983d14c5d2SYehuda Sadeh /* 29995aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 30003d14c5d2SYehuda Sadeh */ 30015aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 30025aea3dcdSIlya Dryomov bool force_resend, 30035aea3dcdSIlya Dryomov bool cleared_full, 30045aea3dcdSIlya Dryomov bool check_pool_cleared_full, 30055aea3dcdSIlya Dryomov struct rb_root *need_resend, 30065aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 30073d14c5d2SYehuda Sadeh { 30085aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 30095aea3dcdSIlya Dryomov struct rb_node *n; 30105aea3dcdSIlya Dryomov bool force_resend_writes; 30113d14c5d2SYehuda Sadeh 3012922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 3013922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3014922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3015922dab61SIlya Dryomov enum calc_target_result ct_res; 3016922dab61SIlya Dryomov 3017922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 3018922dab61SIlya Dryomov 3019922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 3020922dab61SIlya Dryomov lreq->linger_id); 3021922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 3022922dab61SIlya Dryomov switch (ct_res) { 3023922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 3024922dab61SIlya Dryomov force_resend_writes = cleared_full || 3025922dab61SIlya Dryomov (check_pool_cleared_full && 3026922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 3027922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 3028922dab61SIlya Dryomov break; 3029922dab61SIlya Dryomov 3030922dab61SIlya Dryomov /* fall through */ 3031922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 30324609245eSIlya Dryomov cancel_linger_map_check(lreq); 3033922dab61SIlya Dryomov /* 3034922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 3035922dab61SIlya Dryomov * may have already added it to the list, since 3036922dab61SIlya Dryomov * it's not unlinked here. 3037922dab61SIlya Dryomov */ 3038922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 3039922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 3040922dab61SIlya Dryomov break; 3041922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 30424609245eSIlya Dryomov check_linger_pool_dne(lreq); 3043922dab61SIlya Dryomov break; 3044922dab61SIlya Dryomov } 3045922dab61SIlya Dryomov } 3046922dab61SIlya Dryomov 30475aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 30485aea3dcdSIlya Dryomov struct ceph_osd_request *req = 30495aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 30505aea3dcdSIlya Dryomov enum calc_target_result ct_res; 3051ab60b16dSAlex Elder 30524609245eSIlya Dryomov n = rb_next(n); /* unlink_request(), check_pool_dne() */ 3053ab60b16dSAlex Elder 30545aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 30555aea3dcdSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, 30565aea3dcdSIlya Dryomov &req->r_last_force_resend, false); 30575aea3dcdSIlya Dryomov switch (ct_res) { 30585aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 30595aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 30605aea3dcdSIlya Dryomov (check_pool_cleared_full && 30615aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 30625aea3dcdSIlya Dryomov if (!force_resend && 30635aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 30645aea3dcdSIlya Dryomov !force_resend_writes)) 30655aea3dcdSIlya Dryomov break; 3066a40c4f10SYehuda Sadeh 30675aea3dcdSIlya Dryomov /* fall through */ 30685aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 30694609245eSIlya Dryomov cancel_map_check(req); 30705aea3dcdSIlya Dryomov unlink_request(osd, req); 30715aea3dcdSIlya Dryomov insert_request(need_resend, req); 30725aea3dcdSIlya Dryomov break; 30735aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 30744609245eSIlya Dryomov check_pool_dne(req); 30755aea3dcdSIlya Dryomov break; 3076a40c4f10SYehuda Sadeh } 30773d14c5d2SYehuda Sadeh } 30783d14c5d2SYehuda Sadeh } 30796f6c7006SSage Weil 308042c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 30815aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 30825aea3dcdSIlya Dryomov struct rb_root *need_resend, 30835aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 308442c1b124SIlya Dryomov { 308542c1b124SIlya Dryomov struct ceph_osdmap *newmap; 308642c1b124SIlya Dryomov struct rb_node *n; 308742c1b124SIlya Dryomov bool skipped_map = false; 308842c1b124SIlya Dryomov bool was_full; 308942c1b124SIlya Dryomov 3090b7ec35b3SIlya Dryomov was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 309142c1b124SIlya Dryomov set_pool_was_full(osdc); 309242c1b124SIlya Dryomov 309342c1b124SIlya Dryomov if (incremental) 309442c1b124SIlya Dryomov newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); 309542c1b124SIlya Dryomov else 309642c1b124SIlya Dryomov newmap = ceph_osdmap_decode(&p, end); 309742c1b124SIlya Dryomov if (IS_ERR(newmap)) 309842c1b124SIlya Dryomov return PTR_ERR(newmap); 309942c1b124SIlya Dryomov 310042c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 310142c1b124SIlya Dryomov /* 310242c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 310342c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 310442c1b124SIlya Dryomov * should be false. 310542c1b124SIlya Dryomov */ 310642c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 310742c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 310842c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 310942c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 311042c1b124SIlya Dryomov 311142c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 311242c1b124SIlya Dryomov if (old_pi) 311342c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 311442c1b124SIlya Dryomov else 311542c1b124SIlya Dryomov WARN_ON(pi->was_full); 311642c1b124SIlya Dryomov } 311742c1b124SIlya Dryomov 311842c1b124SIlya Dryomov if (osdc->osdmap->epoch && 311942c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 312042c1b124SIlya Dryomov WARN_ON(incremental); 312142c1b124SIlya Dryomov skipped_map = true; 312242c1b124SIlya Dryomov } 312342c1b124SIlya Dryomov 312442c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 312542c1b124SIlya Dryomov osdc->osdmap = newmap; 312642c1b124SIlya Dryomov } 312742c1b124SIlya Dryomov 3128b7ec35b3SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 31295aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 31305aea3dcdSIlya Dryomov need_resend, need_resend_linger); 31315aea3dcdSIlya Dryomov 31325aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 31335aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 31345aea3dcdSIlya Dryomov 31355aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 31365aea3dcdSIlya Dryomov 31375aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 31385aea3dcdSIlya Dryomov need_resend_linger); 31395aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 31405aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 31415aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 31425aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 31435aea3dcdSIlya Dryomov close_osd(osd); 31445aea3dcdSIlya Dryomov } 314542c1b124SIlya Dryomov 314642c1b124SIlya Dryomov return 0; 314742c1b124SIlya Dryomov } 31486f6c7006SSage Weil 31495aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 31505aea3dcdSIlya Dryomov struct rb_root *need_resend, 31515aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 31525aea3dcdSIlya Dryomov { 3153922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 31545aea3dcdSIlya Dryomov struct rb_node *n; 31555aea3dcdSIlya Dryomov 31565aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 31575aea3dcdSIlya Dryomov struct ceph_osd_request *req = 31585aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 31595aea3dcdSIlya Dryomov struct ceph_osd *osd; 31605aea3dcdSIlya Dryomov 31615aea3dcdSIlya Dryomov n = rb_next(n); 31625aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 31635aea3dcdSIlya Dryomov 31645aea3dcdSIlya Dryomov WARN_ON(req->r_osd); 31655aea3dcdSIlya Dryomov calc_target(osdc, &req->r_t, NULL, false); 31665aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 31675aea3dcdSIlya Dryomov link_request(osd, req); 31685aea3dcdSIlya Dryomov if (!req->r_linger) { 31695aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 31705aea3dcdSIlya Dryomov send_request(req); 3171922dab61SIlya Dryomov } else { 3172922dab61SIlya Dryomov cancel_linger_request(req); 31735aea3dcdSIlya Dryomov } 31745aea3dcdSIlya Dryomov } 3175922dab61SIlya Dryomov 3176922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 3177922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 3178922dab61SIlya Dryomov send_linger(lreq); 3179922dab61SIlya Dryomov 3180922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 3181922dab61SIlya Dryomov } 31825aea3dcdSIlya Dryomov } 31835aea3dcdSIlya Dryomov 31843d14c5d2SYehuda Sadeh /* 31853d14c5d2SYehuda Sadeh * Process updated osd map. 31863d14c5d2SYehuda Sadeh * 31873d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 31883d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 31893d14c5d2SYehuda Sadeh * off to different OSDs as needed. 31903d14c5d2SYehuda Sadeh */ 31913d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 31923d14c5d2SYehuda Sadeh { 319342c1b124SIlya Dryomov void *p = msg->front.iov_base; 319442c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 31953d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 31963d14c5d2SYehuda Sadeh u32 epoch; 31973d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 31985aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 31995aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 320042c1b124SIlya Dryomov bool handled_incremental = false; 320142c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 320242c1b124SIlya Dryomov bool pauserd, pausewr; 320342c1b124SIlya Dryomov int err; 32043d14c5d2SYehuda Sadeh 320542c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 32065aea3dcdSIlya Dryomov down_write(&osdc->lock); 32073d14c5d2SYehuda Sadeh 32083d14c5d2SYehuda Sadeh /* verify fsid */ 32093d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 32103d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 32113d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 321242c1b124SIlya Dryomov goto bad; 32133d14c5d2SYehuda Sadeh 3214b7ec35b3SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3215b7ec35b3SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3216b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 321742c1b124SIlya Dryomov have_pool_full(osdc); 32189a1ea2dbSJosh Durgin 32193d14c5d2SYehuda Sadeh /* incremental maps */ 32203d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 32213d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 32223d14c5d2SYehuda Sadeh while (nr_maps > 0) { 32233d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 32243d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 32253d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 32263d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 322742c1b124SIlya Dryomov if (osdc->osdmap->epoch && 322842c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 32293d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 32303d14c5d2SYehuda Sadeh epoch, maplen); 32315aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 32325aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 323342c1b124SIlya Dryomov if (err) 32343d14c5d2SYehuda Sadeh goto bad; 323542c1b124SIlya Dryomov handled_incremental = true; 32363d14c5d2SYehuda Sadeh } else { 32373d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 32383d14c5d2SYehuda Sadeh epoch, maplen); 32393d14c5d2SYehuda Sadeh } 324042c1b124SIlya Dryomov p += maplen; 32413d14c5d2SYehuda Sadeh nr_maps--; 32423d14c5d2SYehuda Sadeh } 324342c1b124SIlya Dryomov if (handled_incremental) 32443d14c5d2SYehuda Sadeh goto done; 32453d14c5d2SYehuda Sadeh 32463d14c5d2SYehuda Sadeh /* full maps */ 32473d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 32483d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 32493d14c5d2SYehuda Sadeh while (nr_maps) { 32503d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 32513d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 32523d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 32533d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 32543d14c5d2SYehuda Sadeh if (nr_maps > 1) { 32553d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 32563d14c5d2SYehuda Sadeh epoch, maplen); 3257e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 32583d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 32593d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 32603d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 32613d14c5d2SYehuda Sadeh } else { 32623d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 32635aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 32645aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 326542c1b124SIlya Dryomov if (err) 32663d14c5d2SYehuda Sadeh goto bad; 32673d14c5d2SYehuda Sadeh } 32683d14c5d2SYehuda Sadeh p += maplen; 32693d14c5d2SYehuda Sadeh nr_maps--; 32703d14c5d2SYehuda Sadeh } 32713d14c5d2SYehuda Sadeh 32723d14c5d2SYehuda Sadeh done: 3273cd634fb6SSage Weil /* 3274cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 3275cd634fb6SSage Weil * we find out when we are no longer full and stop returning 3276cd634fb6SSage Weil * ENOSPC. 3277cd634fb6SSage Weil */ 3278b7ec35b3SIlya Dryomov pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3279b7ec35b3SIlya Dryomov pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3280b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 328142c1b124SIlya Dryomov have_pool_full(osdc); 328242c1b124SIlya Dryomov if (was_pauserd || was_pausewr || pauserd || pausewr) 328342c1b124SIlya Dryomov maybe_request_map(osdc); 3284cd634fb6SSage Weil 32855aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 328642c1b124SIlya Dryomov 328742c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 328842c1b124SIlya Dryomov osdc->osdmap->epoch); 32895aea3dcdSIlya Dryomov up_write(&osdc->lock); 32903d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 32913d14c5d2SYehuda Sadeh return; 32923d14c5d2SYehuda Sadeh 32933d14c5d2SYehuda Sadeh bad: 32943d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 32953d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 32965aea3dcdSIlya Dryomov up_write(&osdc->lock); 32975aea3dcdSIlya Dryomov } 32985aea3dcdSIlya Dryomov 32995aea3dcdSIlya Dryomov /* 33005aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 33015aea3dcdSIlya Dryomov */ 33025aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 33035aea3dcdSIlya Dryomov { 33045aea3dcdSIlya Dryomov struct rb_node *n; 33055aea3dcdSIlya Dryomov 3306922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 33075aea3dcdSIlya Dryomov struct ceph_osd_request *req = 33085aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 33095aea3dcdSIlya Dryomov 3310922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 3311922dab61SIlya Dryomov 33125aea3dcdSIlya Dryomov if (!req->r_linger) { 33135aea3dcdSIlya Dryomov if (!req->r_t.paused) 33145aea3dcdSIlya Dryomov send_request(req); 3315922dab61SIlya Dryomov } else { 3316922dab61SIlya Dryomov cancel_linger_request(req); 33175aea3dcdSIlya Dryomov } 33185aea3dcdSIlya Dryomov } 3319922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 3320922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3321922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3322922dab61SIlya Dryomov 3323922dab61SIlya Dryomov send_linger(lreq); 3324922dab61SIlya Dryomov } 33255aea3dcdSIlya Dryomov } 33265aea3dcdSIlya Dryomov 33275aea3dcdSIlya Dryomov /* 33285aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 33295aea3dcdSIlya Dryomov */ 33305aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 33315aea3dcdSIlya Dryomov { 33325aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 33335aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 33345aea3dcdSIlya Dryomov 33355aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 33365aea3dcdSIlya Dryomov 33375aea3dcdSIlya Dryomov down_write(&osdc->lock); 33385aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 33395aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 33405aea3dcdSIlya Dryomov goto out_unlock; 33415aea3dcdSIlya Dryomov } 33425aea3dcdSIlya Dryomov 33435aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 33445aea3dcdSIlya Dryomov kick_osd_requests(osd); 33455aea3dcdSIlya Dryomov maybe_request_map(osdc); 33465aea3dcdSIlya Dryomov 33475aea3dcdSIlya Dryomov out_unlock: 33485aea3dcdSIlya Dryomov up_write(&osdc->lock); 33493d14c5d2SYehuda Sadeh } 33503d14c5d2SYehuda Sadeh 33513d14c5d2SYehuda Sadeh /* 3352a40c4f10SYehuda Sadeh * Process osd watch notifications 3353a40c4f10SYehuda Sadeh */ 33543c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 33553c663bbdSAlex Elder struct ceph_msg *msg) 3356a40c4f10SYehuda Sadeh { 3357922dab61SIlya Dryomov void *p = msg->front.iov_base; 3358922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 3359922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 3360922dab61SIlya Dryomov struct linger_work *lwork; 3361922dab61SIlya Dryomov u8 proto_ver, opcode; 3362922dab61SIlya Dryomov u64 cookie, notify_id; 3363922dab61SIlya Dryomov u64 notifier_id = 0; 336419079203SIlya Dryomov s32 return_code = 0; 3365922dab61SIlya Dryomov void *payload = NULL; 3366922dab61SIlya Dryomov u32 payload_len = 0; 3367a40c4f10SYehuda Sadeh 3368a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 3369a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 3370a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 3371922dab61SIlya Dryomov p += 8; /* skip ver */ 3372a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 3373a40c4f10SYehuda Sadeh 3374922dab61SIlya Dryomov if (proto_ver >= 1) { 3375922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 3376922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 3377922dab61SIlya Dryomov payload = p; 3378922dab61SIlya Dryomov p += payload_len; 3379a40c4f10SYehuda Sadeh } 3380a40c4f10SYehuda Sadeh 3381922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 338219079203SIlya Dryomov ceph_decode_32_safe(&p, end, return_code, bad); 3383922dab61SIlya Dryomov 3384922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 3385922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 3386922dab61SIlya Dryomov 3387922dab61SIlya Dryomov down_read(&osdc->lock); 3388922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 3389922dab61SIlya Dryomov if (!lreq) { 3390922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 3391922dab61SIlya Dryomov cookie); 3392922dab61SIlya Dryomov goto out_unlock_osdc; 3393922dab61SIlya Dryomov } 3394922dab61SIlya Dryomov 3395922dab61SIlya Dryomov mutex_lock(&lreq->lock); 339619079203SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, 339719079203SIlya Dryomov opcode, cookie, lreq, lreq->is_watch); 3398922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 3399922dab61SIlya Dryomov if (!lreq->last_error) { 3400922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 3401922dab61SIlya Dryomov queue_watch_error(lreq); 3402922dab61SIlya Dryomov } 340319079203SIlya Dryomov } else if (!lreq->is_watch) { 340419079203SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ 340519079203SIlya Dryomov if (lreq->notify_id && lreq->notify_id != notify_id) { 340619079203SIlya Dryomov dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, 340719079203SIlya Dryomov lreq->notify_id, notify_id); 340819079203SIlya Dryomov } else if (!completion_done(&lreq->notify_finish_wait)) { 340919079203SIlya Dryomov struct ceph_msg_data *data = 341019079203SIlya Dryomov list_first_entry_or_null(&msg->data, 341119079203SIlya Dryomov struct ceph_msg_data, 341219079203SIlya Dryomov links); 341319079203SIlya Dryomov 341419079203SIlya Dryomov if (data) { 341519079203SIlya Dryomov if (lreq->preply_pages) { 341619079203SIlya Dryomov WARN_ON(data->type != 341719079203SIlya Dryomov CEPH_MSG_DATA_PAGES); 341819079203SIlya Dryomov *lreq->preply_pages = data->pages; 341919079203SIlya Dryomov *lreq->preply_len = data->length; 342019079203SIlya Dryomov } else { 342119079203SIlya Dryomov ceph_release_page_vector(data->pages, 342219079203SIlya Dryomov calc_pages_for(0, data->length)); 342319079203SIlya Dryomov } 342419079203SIlya Dryomov } 342519079203SIlya Dryomov lreq->notify_finish_error = return_code; 342619079203SIlya Dryomov complete_all(&lreq->notify_finish_wait); 342719079203SIlya Dryomov } 3428922dab61SIlya Dryomov } else { 3429922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 3430922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 3431922dab61SIlya Dryomov if (!lwork) { 3432922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 3433922dab61SIlya Dryomov goto out_unlock_lreq; 3434922dab61SIlya Dryomov } 3435922dab61SIlya Dryomov 3436922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 3437922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 3438922dab61SIlya Dryomov lwork->notify.payload = payload; 3439922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 3440922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 3441922dab61SIlya Dryomov lwork_queue(lwork); 3442922dab61SIlya Dryomov } 3443922dab61SIlya Dryomov 3444922dab61SIlya Dryomov out_unlock_lreq: 3445922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3446922dab61SIlya Dryomov out_unlock_osdc: 3447922dab61SIlya Dryomov up_read(&osdc->lock); 3448a40c4f10SYehuda Sadeh return; 3449a40c4f10SYehuda Sadeh 3450a40c4f10SYehuda Sadeh bad: 3451a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 3452a40c4f10SYehuda Sadeh } 3453a40c4f10SYehuda Sadeh 3454a40c4f10SYehuda Sadeh /* 34553d14c5d2SYehuda Sadeh * Register request, send initial attempt. 34563d14c5d2SYehuda Sadeh */ 34573d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 34583d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 34593d14c5d2SYehuda Sadeh bool nofail) 34603d14c5d2SYehuda Sadeh { 34615aea3dcdSIlya Dryomov down_read(&osdc->lock); 34625aea3dcdSIlya Dryomov submit_request(req, false); 34635aea3dcdSIlya Dryomov up_read(&osdc->lock); 34643d14c5d2SYehuda Sadeh 34655aea3dcdSIlya Dryomov return 0; 34663d14c5d2SYehuda Sadeh } 34673d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 34683d14c5d2SYehuda Sadeh 34693d14c5d2SYehuda Sadeh /* 3470c297eb42SIlya Dryomov * Unregister a registered request. The request is not completed: 3471c297eb42SIlya Dryomov * ->r_result isn't set and __complete_request() isn't called. 3472c9f9b93dSIlya Dryomov */ 3473c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 3474c9f9b93dSIlya Dryomov { 3475c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 3476c9f9b93dSIlya Dryomov 34775aea3dcdSIlya Dryomov down_write(&osdc->lock); 34785aea3dcdSIlya Dryomov if (req->r_osd) 34795aea3dcdSIlya Dryomov cancel_request(req); 34805aea3dcdSIlya Dryomov up_write(&osdc->lock); 3481c9f9b93dSIlya Dryomov } 3482c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 3483c9f9b93dSIlya Dryomov 3484c9f9b93dSIlya Dryomov /* 348542b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 348642b06965SIlya Dryomov */ 348742b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 348842b06965SIlya Dryomov unsigned long timeout) 348942b06965SIlya Dryomov { 349042b06965SIlya Dryomov long left; 349142b06965SIlya Dryomov 349242b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 34930e76abf2SYan, Zheng left = wait_for_completion_killable_timeout(&req->r_completion, 349442b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 349542b06965SIlya Dryomov if (left <= 0) { 349642b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 349742b06965SIlya Dryomov ceph_osdc_cancel_request(req); 349842b06965SIlya Dryomov } else { 349942b06965SIlya Dryomov left = req->r_result; /* completed */ 350042b06965SIlya Dryomov } 350142b06965SIlya Dryomov 350242b06965SIlya Dryomov return left; 350342b06965SIlya Dryomov } 350442b06965SIlya Dryomov 350542b06965SIlya Dryomov /* 35063d14c5d2SYehuda Sadeh * wait for a request to complete 35073d14c5d2SYehuda Sadeh */ 35083d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 35093d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 35103d14c5d2SYehuda Sadeh { 351142b06965SIlya Dryomov return wait_request_timeout(req, 0); 35123d14c5d2SYehuda Sadeh } 35133d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 35143d14c5d2SYehuda Sadeh 35153d14c5d2SYehuda Sadeh /* 35163d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 35173d14c5d2SYehuda Sadeh */ 35183d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 35193d14c5d2SYehuda Sadeh { 35205aea3dcdSIlya Dryomov struct rb_node *n, *p; 35215aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 35223d14c5d2SYehuda Sadeh 35235aea3dcdSIlya Dryomov again: 35245aea3dcdSIlya Dryomov down_read(&osdc->lock); 35255aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 35265aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 35275aea3dcdSIlya Dryomov 35285aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 35295aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 35305aea3dcdSIlya Dryomov struct ceph_osd_request *req = 35315aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 35325aea3dcdSIlya Dryomov 35333d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 35343d14c5d2SYehuda Sadeh break; 35353d14c5d2SYehuda Sadeh 35365aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 35373d14c5d2SYehuda Sadeh continue; 35383d14c5d2SYehuda Sadeh 35393d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 35405aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 35415aea3dcdSIlya Dryomov up_read(&osdc->lock); 35425aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 35435aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 3544c297eb42SIlya Dryomov wait_for_completion(&req->r_done_completion); 35453d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 35465aea3dcdSIlya Dryomov goto again; 35473d14c5d2SYehuda Sadeh } 35485aea3dcdSIlya Dryomov 35495aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 35505aea3dcdSIlya Dryomov } 35515aea3dcdSIlya Dryomov 35525aea3dcdSIlya Dryomov up_read(&osdc->lock); 35535aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 35543d14c5d2SYehuda Sadeh } 35553d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 35563d14c5d2SYehuda Sadeh 3557922dab61SIlya Dryomov static struct ceph_osd_request * 3558922dab61SIlya Dryomov alloc_linger_request(struct ceph_osd_linger_request *lreq) 3559922dab61SIlya Dryomov { 3560922dab61SIlya Dryomov struct ceph_osd_request *req; 3561922dab61SIlya Dryomov 3562922dab61SIlya Dryomov req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); 3563922dab61SIlya Dryomov if (!req) 3564922dab61SIlya Dryomov return NULL; 3565922dab61SIlya Dryomov 3566922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 3567922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 3568922dab61SIlya Dryomov 3569922dab61SIlya Dryomov if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { 3570922dab61SIlya Dryomov ceph_osdc_put_request(req); 3571922dab61SIlya Dryomov return NULL; 3572922dab61SIlya Dryomov } 3573922dab61SIlya Dryomov 3574922dab61SIlya Dryomov return req; 3575922dab61SIlya Dryomov } 3576922dab61SIlya Dryomov 3577922dab61SIlya Dryomov /* 3578922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 3579922dab61SIlya Dryomov */ 3580922dab61SIlya Dryomov struct ceph_osd_linger_request * 3581922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 3582922dab61SIlya Dryomov struct ceph_object_id *oid, 3583922dab61SIlya Dryomov struct ceph_object_locator *oloc, 3584922dab61SIlya Dryomov rados_watchcb2_t wcb, 3585922dab61SIlya Dryomov rados_watcherrcb_t errcb, 3586922dab61SIlya Dryomov void *data) 3587922dab61SIlya Dryomov { 3588922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 3589922dab61SIlya Dryomov int ret; 3590922dab61SIlya Dryomov 3591922dab61SIlya Dryomov lreq = linger_alloc(osdc); 3592922dab61SIlya Dryomov if (!lreq) 3593922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 3594922dab61SIlya Dryomov 359519079203SIlya Dryomov lreq->is_watch = true; 3596922dab61SIlya Dryomov lreq->wcb = wcb; 3597922dab61SIlya Dryomov lreq->errcb = errcb; 3598922dab61SIlya Dryomov lreq->data = data; 3599b07d3c4bSIlya Dryomov lreq->watch_valid_thru = jiffies; 3600922dab61SIlya Dryomov 3601922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 3602922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 3603922dab61SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK; 3604922dab61SIlya Dryomov lreq->mtime = CURRENT_TIME; 3605922dab61SIlya Dryomov 3606922dab61SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 3607922dab61SIlya Dryomov if (!lreq->reg_req) { 3608922dab61SIlya Dryomov ret = -ENOMEM; 3609922dab61SIlya Dryomov goto err_put_lreq; 3610922dab61SIlya Dryomov } 3611922dab61SIlya Dryomov 3612922dab61SIlya Dryomov lreq->ping_req = alloc_linger_request(lreq); 3613922dab61SIlya Dryomov if (!lreq->ping_req) { 3614922dab61SIlya Dryomov ret = -ENOMEM; 3615922dab61SIlya Dryomov goto err_put_lreq; 3616922dab61SIlya Dryomov } 3617922dab61SIlya Dryomov 3618922dab61SIlya Dryomov down_write(&osdc->lock); 3619922dab61SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 3620922dab61SIlya Dryomov osd_req_op_watch_init(lreq->reg_req, 0, lreq->linger_id, 3621922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_WATCH); 3622922dab61SIlya Dryomov osd_req_op_watch_init(lreq->ping_req, 0, lreq->linger_id, 3623922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_PING); 3624922dab61SIlya Dryomov linger_submit(lreq); 3625922dab61SIlya Dryomov up_write(&osdc->lock); 3626922dab61SIlya Dryomov 3627922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 3628922dab61SIlya Dryomov if (ret) { 3629922dab61SIlya Dryomov linger_cancel(lreq); 3630922dab61SIlya Dryomov goto err_put_lreq; 3631922dab61SIlya Dryomov } 3632922dab61SIlya Dryomov 3633922dab61SIlya Dryomov return lreq; 3634922dab61SIlya Dryomov 3635922dab61SIlya Dryomov err_put_lreq: 3636922dab61SIlya Dryomov linger_put(lreq); 3637922dab61SIlya Dryomov return ERR_PTR(ret); 3638922dab61SIlya Dryomov } 3639922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 3640922dab61SIlya Dryomov 3641922dab61SIlya Dryomov /* 3642922dab61SIlya Dryomov * Releases a ref. 3643922dab61SIlya Dryomov * 3644922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 3645922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 3646922dab61SIlya Dryomov * with mount_timeout"). 3647922dab61SIlya Dryomov */ 3648922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 3649922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 3650922dab61SIlya Dryomov { 3651922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 3652922dab61SIlya Dryomov struct ceph_osd_request *req; 3653922dab61SIlya Dryomov int ret; 3654922dab61SIlya Dryomov 3655922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 3656922dab61SIlya Dryomov if (!req) 3657922dab61SIlya Dryomov return -ENOMEM; 3658922dab61SIlya Dryomov 3659922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 3660922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 3661922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK; 3662922dab61SIlya Dryomov req->r_mtime = CURRENT_TIME; 3663922dab61SIlya Dryomov osd_req_op_watch_init(req, 0, lreq->linger_id, 3664922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_UNWATCH); 3665922dab61SIlya Dryomov 3666922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 3667922dab61SIlya Dryomov if (ret) 3668922dab61SIlya Dryomov goto out_put_req; 3669922dab61SIlya Dryomov 3670922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 3671922dab61SIlya Dryomov linger_cancel(lreq); 3672922dab61SIlya Dryomov linger_put(lreq); 3673922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 3674922dab61SIlya Dryomov 3675922dab61SIlya Dryomov out_put_req: 3676922dab61SIlya Dryomov ceph_osdc_put_request(req); 3677922dab61SIlya Dryomov return ret; 3678922dab61SIlya Dryomov } 3679922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 3680922dab61SIlya Dryomov 3681922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 3682922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 3683922dab61SIlya Dryomov size_t payload_len) 3684922dab61SIlya Dryomov { 3685922dab61SIlya Dryomov struct ceph_osd_req_op *op; 3686922dab61SIlya Dryomov struct ceph_pagelist *pl; 3687922dab61SIlya Dryomov int ret; 3688922dab61SIlya Dryomov 3689922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 3690922dab61SIlya Dryomov 3691922dab61SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 3692922dab61SIlya Dryomov if (!pl) 3693922dab61SIlya Dryomov return -ENOMEM; 3694922dab61SIlya Dryomov 3695922dab61SIlya Dryomov ceph_pagelist_init(pl); 3696922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 3697922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 3698922dab61SIlya Dryomov if (payload) { 3699922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 3700922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 3701922dab61SIlya Dryomov } else { 3702922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 3703922dab61SIlya Dryomov } 3704922dab61SIlya Dryomov if (ret) { 3705922dab61SIlya Dryomov ceph_pagelist_release(pl); 3706922dab61SIlya Dryomov return -ENOMEM; 3707922dab61SIlya Dryomov } 3708922dab61SIlya Dryomov 3709922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 3710922dab61SIlya Dryomov op->indata_len = pl->length; 3711922dab61SIlya Dryomov return 0; 3712922dab61SIlya Dryomov } 3713922dab61SIlya Dryomov 3714922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 3715922dab61SIlya Dryomov struct ceph_object_id *oid, 3716922dab61SIlya Dryomov struct ceph_object_locator *oloc, 3717922dab61SIlya Dryomov u64 notify_id, 3718922dab61SIlya Dryomov u64 cookie, 3719922dab61SIlya Dryomov void *payload, 3720922dab61SIlya Dryomov size_t payload_len) 3721922dab61SIlya Dryomov { 3722922dab61SIlya Dryomov struct ceph_osd_request *req; 3723922dab61SIlya Dryomov int ret; 3724922dab61SIlya Dryomov 3725922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 3726922dab61SIlya Dryomov if (!req) 3727922dab61SIlya Dryomov return -ENOMEM; 3728922dab61SIlya Dryomov 3729922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 3730922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 3731922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 3732922dab61SIlya Dryomov 3733922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 3734922dab61SIlya Dryomov if (ret) 3735922dab61SIlya Dryomov goto out_put_req; 3736922dab61SIlya Dryomov 3737922dab61SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 3738922dab61SIlya Dryomov payload_len); 3739922dab61SIlya Dryomov if (ret) 3740922dab61SIlya Dryomov goto out_put_req; 3741922dab61SIlya Dryomov 3742922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 3743922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 3744922dab61SIlya Dryomov 3745922dab61SIlya Dryomov out_put_req: 3746922dab61SIlya Dryomov ceph_osdc_put_request(req); 3747922dab61SIlya Dryomov return ret; 3748922dab61SIlya Dryomov } 3749922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 3750922dab61SIlya Dryomov 375119079203SIlya Dryomov static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, 375219079203SIlya Dryomov u64 cookie, u32 prot_ver, u32 timeout, 375319079203SIlya Dryomov void *payload, size_t payload_len) 375419079203SIlya Dryomov { 375519079203SIlya Dryomov struct ceph_osd_req_op *op; 375619079203SIlya Dryomov struct ceph_pagelist *pl; 375719079203SIlya Dryomov int ret; 375819079203SIlya Dryomov 375919079203SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); 376019079203SIlya Dryomov op->notify.cookie = cookie; 376119079203SIlya Dryomov 376219079203SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 376319079203SIlya Dryomov if (!pl) 376419079203SIlya Dryomov return -ENOMEM; 376519079203SIlya Dryomov 376619079203SIlya Dryomov ceph_pagelist_init(pl); 376719079203SIlya Dryomov ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ 376819079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, timeout); 376919079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 377019079203SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 377119079203SIlya Dryomov if (ret) { 377219079203SIlya Dryomov ceph_pagelist_release(pl); 377319079203SIlya Dryomov return -ENOMEM; 377419079203SIlya Dryomov } 377519079203SIlya Dryomov 377619079203SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify.request_data, pl); 377719079203SIlya Dryomov op->indata_len = pl->length; 377819079203SIlya Dryomov return 0; 377919079203SIlya Dryomov } 378019079203SIlya Dryomov 378119079203SIlya Dryomov /* 378219079203SIlya Dryomov * @timeout: in seconds 378319079203SIlya Dryomov * 378419079203SIlya Dryomov * @preply_{pages,len} are initialized both on success and error. 378519079203SIlya Dryomov * The caller is responsible for: 378619079203SIlya Dryomov * 378719079203SIlya Dryomov * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) 378819079203SIlya Dryomov */ 378919079203SIlya Dryomov int ceph_osdc_notify(struct ceph_osd_client *osdc, 379019079203SIlya Dryomov struct ceph_object_id *oid, 379119079203SIlya Dryomov struct ceph_object_locator *oloc, 379219079203SIlya Dryomov void *payload, 379319079203SIlya Dryomov size_t payload_len, 379419079203SIlya Dryomov u32 timeout, 379519079203SIlya Dryomov struct page ***preply_pages, 379619079203SIlya Dryomov size_t *preply_len) 379719079203SIlya Dryomov { 379819079203SIlya Dryomov struct ceph_osd_linger_request *lreq; 379919079203SIlya Dryomov struct page **pages; 380019079203SIlya Dryomov int ret; 380119079203SIlya Dryomov 380219079203SIlya Dryomov WARN_ON(!timeout); 380319079203SIlya Dryomov if (preply_pages) { 380419079203SIlya Dryomov *preply_pages = NULL; 380519079203SIlya Dryomov *preply_len = 0; 380619079203SIlya Dryomov } 380719079203SIlya Dryomov 380819079203SIlya Dryomov lreq = linger_alloc(osdc); 380919079203SIlya Dryomov if (!lreq) 381019079203SIlya Dryomov return -ENOMEM; 381119079203SIlya Dryomov 381219079203SIlya Dryomov lreq->preply_pages = preply_pages; 381319079203SIlya Dryomov lreq->preply_len = preply_len; 381419079203SIlya Dryomov 381519079203SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 381619079203SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 381719079203SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_READ; 381819079203SIlya Dryomov 381919079203SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 382019079203SIlya Dryomov if (!lreq->reg_req) { 382119079203SIlya Dryomov ret = -ENOMEM; 382219079203SIlya Dryomov goto out_put_lreq; 382319079203SIlya Dryomov } 382419079203SIlya Dryomov 382519079203SIlya Dryomov /* for notify_id */ 382619079203SIlya Dryomov pages = ceph_alloc_page_vector(1, GFP_NOIO); 382719079203SIlya Dryomov if (IS_ERR(pages)) { 382819079203SIlya Dryomov ret = PTR_ERR(pages); 382919079203SIlya Dryomov goto out_put_lreq; 383019079203SIlya Dryomov } 383119079203SIlya Dryomov 383219079203SIlya Dryomov down_write(&osdc->lock); 383319079203SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 383419079203SIlya Dryomov ret = osd_req_op_notify_init(lreq->reg_req, 0, lreq->linger_id, 1, 383519079203SIlya Dryomov timeout, payload, payload_len); 383619079203SIlya Dryomov if (ret) { 383719079203SIlya Dryomov linger_unregister(lreq); 383819079203SIlya Dryomov up_write(&osdc->lock); 383919079203SIlya Dryomov ceph_release_page_vector(pages, 1); 384019079203SIlya Dryomov goto out_put_lreq; 384119079203SIlya Dryomov } 384219079203SIlya Dryomov ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, 384319079203SIlya Dryomov response_data), 384419079203SIlya Dryomov pages, PAGE_SIZE, 0, false, true); 384519079203SIlya Dryomov linger_submit(lreq); 384619079203SIlya Dryomov up_write(&osdc->lock); 384719079203SIlya Dryomov 384819079203SIlya Dryomov ret = linger_reg_commit_wait(lreq); 384919079203SIlya Dryomov if (!ret) 385019079203SIlya Dryomov ret = linger_notify_finish_wait(lreq); 385119079203SIlya Dryomov else 385219079203SIlya Dryomov dout("lreq %p failed to initiate notify %d\n", lreq, ret); 385319079203SIlya Dryomov 385419079203SIlya Dryomov linger_cancel(lreq); 385519079203SIlya Dryomov out_put_lreq: 385619079203SIlya Dryomov linger_put(lreq); 385719079203SIlya Dryomov return ret; 385819079203SIlya Dryomov } 385919079203SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify); 386019079203SIlya Dryomov 38613d14c5d2SYehuda Sadeh /* 3862b07d3c4bSIlya Dryomov * Return the number of milliseconds since the watch was last 3863b07d3c4bSIlya Dryomov * confirmed, or an error. If there is an error, the watch is no 3864b07d3c4bSIlya Dryomov * longer valid, and should be destroyed with ceph_osdc_unwatch(). 3865b07d3c4bSIlya Dryomov */ 3866b07d3c4bSIlya Dryomov int ceph_osdc_watch_check(struct ceph_osd_client *osdc, 3867b07d3c4bSIlya Dryomov struct ceph_osd_linger_request *lreq) 3868b07d3c4bSIlya Dryomov { 3869b07d3c4bSIlya Dryomov unsigned long stamp, age; 3870b07d3c4bSIlya Dryomov int ret; 3871b07d3c4bSIlya Dryomov 3872b07d3c4bSIlya Dryomov down_read(&osdc->lock); 3873b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 3874b07d3c4bSIlya Dryomov stamp = lreq->watch_valid_thru; 3875b07d3c4bSIlya Dryomov if (!list_empty(&lreq->pending_lworks)) { 3876b07d3c4bSIlya Dryomov struct linger_work *lwork = 3877b07d3c4bSIlya Dryomov list_first_entry(&lreq->pending_lworks, 3878b07d3c4bSIlya Dryomov struct linger_work, 3879b07d3c4bSIlya Dryomov pending_item); 3880b07d3c4bSIlya Dryomov 3881b07d3c4bSIlya Dryomov if (time_before(lwork->queued_stamp, stamp)) 3882b07d3c4bSIlya Dryomov stamp = lwork->queued_stamp; 3883b07d3c4bSIlya Dryomov } 3884b07d3c4bSIlya Dryomov age = jiffies - stamp; 3885b07d3c4bSIlya Dryomov dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, 3886b07d3c4bSIlya Dryomov lreq, lreq->linger_id, age, lreq->last_error); 3887b07d3c4bSIlya Dryomov /* we are truncating to msecs, so return a safe upper bound */ 3888b07d3c4bSIlya Dryomov ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); 3889b07d3c4bSIlya Dryomov 3890b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 3891b07d3c4bSIlya Dryomov up_read(&osdc->lock); 3892b07d3c4bSIlya Dryomov return ret; 3893b07d3c4bSIlya Dryomov } 3894b07d3c4bSIlya Dryomov 3895a4ed38d7SDouglas Fuller static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) 3896a4ed38d7SDouglas Fuller { 3897a4ed38d7SDouglas Fuller u8 struct_v; 3898a4ed38d7SDouglas Fuller u32 struct_len; 3899a4ed38d7SDouglas Fuller int ret; 3900a4ed38d7SDouglas Fuller 3901a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 2, "watch_item_t", 3902a4ed38d7SDouglas Fuller &struct_v, &struct_len); 3903a4ed38d7SDouglas Fuller if (ret) 3904a4ed38d7SDouglas Fuller return ret; 3905a4ed38d7SDouglas Fuller 3906a4ed38d7SDouglas Fuller ceph_decode_copy(p, &item->name, sizeof(item->name)); 3907a4ed38d7SDouglas Fuller item->cookie = ceph_decode_64(p); 3908a4ed38d7SDouglas Fuller *p += 4; /* skip timeout_seconds */ 3909a4ed38d7SDouglas Fuller if (struct_v >= 2) { 3910a4ed38d7SDouglas Fuller ceph_decode_copy(p, &item->addr, sizeof(item->addr)); 3911a4ed38d7SDouglas Fuller ceph_decode_addr(&item->addr); 3912a4ed38d7SDouglas Fuller } 3913a4ed38d7SDouglas Fuller 3914a4ed38d7SDouglas Fuller dout("%s %s%llu cookie %llu addr %s\n", __func__, 3915a4ed38d7SDouglas Fuller ENTITY_NAME(item->name), item->cookie, 3916a4ed38d7SDouglas Fuller ceph_pr_addr(&item->addr.in_addr)); 3917a4ed38d7SDouglas Fuller return 0; 3918a4ed38d7SDouglas Fuller } 3919a4ed38d7SDouglas Fuller 3920a4ed38d7SDouglas Fuller static int decode_watchers(void **p, void *end, 3921a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 3922a4ed38d7SDouglas Fuller u32 *num_watchers) 3923a4ed38d7SDouglas Fuller { 3924a4ed38d7SDouglas Fuller u8 struct_v; 3925a4ed38d7SDouglas Fuller u32 struct_len; 3926a4ed38d7SDouglas Fuller int i; 3927a4ed38d7SDouglas Fuller int ret; 3928a4ed38d7SDouglas Fuller 3929a4ed38d7SDouglas Fuller ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t", 3930a4ed38d7SDouglas Fuller &struct_v, &struct_len); 3931a4ed38d7SDouglas Fuller if (ret) 3932a4ed38d7SDouglas Fuller return ret; 3933a4ed38d7SDouglas Fuller 3934a4ed38d7SDouglas Fuller *num_watchers = ceph_decode_32(p); 3935a4ed38d7SDouglas Fuller *watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO); 3936a4ed38d7SDouglas Fuller if (!*watchers) 3937a4ed38d7SDouglas Fuller return -ENOMEM; 3938a4ed38d7SDouglas Fuller 3939a4ed38d7SDouglas Fuller for (i = 0; i < *num_watchers; i++) { 3940a4ed38d7SDouglas Fuller ret = decode_watcher(p, end, *watchers + i); 3941a4ed38d7SDouglas Fuller if (ret) { 3942a4ed38d7SDouglas Fuller kfree(*watchers); 3943a4ed38d7SDouglas Fuller return ret; 3944a4ed38d7SDouglas Fuller } 3945a4ed38d7SDouglas Fuller } 3946a4ed38d7SDouglas Fuller 3947a4ed38d7SDouglas Fuller return 0; 3948a4ed38d7SDouglas Fuller } 3949a4ed38d7SDouglas Fuller 3950a4ed38d7SDouglas Fuller /* 3951a4ed38d7SDouglas Fuller * On success, the caller is responsible for: 3952a4ed38d7SDouglas Fuller * 3953a4ed38d7SDouglas Fuller * kfree(watchers); 3954a4ed38d7SDouglas Fuller */ 3955a4ed38d7SDouglas Fuller int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, 3956a4ed38d7SDouglas Fuller struct ceph_object_id *oid, 3957a4ed38d7SDouglas Fuller struct ceph_object_locator *oloc, 3958a4ed38d7SDouglas Fuller struct ceph_watch_item **watchers, 3959a4ed38d7SDouglas Fuller u32 *num_watchers) 3960a4ed38d7SDouglas Fuller { 3961a4ed38d7SDouglas Fuller struct ceph_osd_request *req; 3962a4ed38d7SDouglas Fuller struct page **pages; 3963a4ed38d7SDouglas Fuller int ret; 3964a4ed38d7SDouglas Fuller 3965a4ed38d7SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 3966a4ed38d7SDouglas Fuller if (!req) 3967a4ed38d7SDouglas Fuller return -ENOMEM; 3968a4ed38d7SDouglas Fuller 3969a4ed38d7SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 3970a4ed38d7SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 3971a4ed38d7SDouglas Fuller req->r_flags = CEPH_OSD_FLAG_READ; 3972a4ed38d7SDouglas Fuller 3973a4ed38d7SDouglas Fuller ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 3974a4ed38d7SDouglas Fuller if (ret) 3975a4ed38d7SDouglas Fuller goto out_put_req; 3976a4ed38d7SDouglas Fuller 3977a4ed38d7SDouglas Fuller pages = ceph_alloc_page_vector(1, GFP_NOIO); 3978a4ed38d7SDouglas Fuller if (IS_ERR(pages)) { 3979a4ed38d7SDouglas Fuller ret = PTR_ERR(pages); 3980a4ed38d7SDouglas Fuller goto out_put_req; 3981a4ed38d7SDouglas Fuller } 3982a4ed38d7SDouglas Fuller 3983a4ed38d7SDouglas Fuller osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0); 3984a4ed38d7SDouglas Fuller ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers, 3985a4ed38d7SDouglas Fuller response_data), 3986a4ed38d7SDouglas Fuller pages, PAGE_SIZE, 0, false, true); 3987a4ed38d7SDouglas Fuller 3988a4ed38d7SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 3989a4ed38d7SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 3990a4ed38d7SDouglas Fuller if (ret >= 0) { 3991a4ed38d7SDouglas Fuller void *p = page_address(pages[0]); 3992a4ed38d7SDouglas Fuller void *const end = p + req->r_ops[0].outdata_len; 3993a4ed38d7SDouglas Fuller 3994a4ed38d7SDouglas Fuller ret = decode_watchers(&p, end, watchers, num_watchers); 3995a4ed38d7SDouglas Fuller } 3996a4ed38d7SDouglas Fuller 3997a4ed38d7SDouglas Fuller out_put_req: 3998a4ed38d7SDouglas Fuller ceph_osdc_put_request(req); 3999a4ed38d7SDouglas Fuller return ret; 4000a4ed38d7SDouglas Fuller } 4001a4ed38d7SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_list_watchers); 4002a4ed38d7SDouglas Fuller 4003b07d3c4bSIlya Dryomov /* 4004dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 4005dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 4006dd935f44SJosh Durgin */ 4007f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 4008dd935f44SJosh Durgin { 400999d16943SIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 4010dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 4011dd935f44SJosh Durgin } 4012dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 4013dd935f44SJosh Durgin 40147cca78c9SIlya Dryomov void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) 40157cca78c9SIlya Dryomov { 40167cca78c9SIlya Dryomov down_read(&osdc->lock); 40177cca78c9SIlya Dryomov maybe_request_map(osdc); 40187cca78c9SIlya Dryomov up_read(&osdc->lock); 40197cca78c9SIlya Dryomov } 40207cca78c9SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_maybe_request_map); 4021dd935f44SJosh Durgin 4022dd935f44SJosh Durgin /* 4023428a7158SDouglas Fuller * Execute an OSD class method on an object. 4024428a7158SDouglas Fuller * 4025428a7158SDouglas Fuller * @flags: CEPH_OSD_FLAG_* 40262544a020SIlya Dryomov * @resp_len: in/out param for reply length 4027428a7158SDouglas Fuller */ 4028428a7158SDouglas Fuller int ceph_osdc_call(struct ceph_osd_client *osdc, 4029428a7158SDouglas Fuller struct ceph_object_id *oid, 4030428a7158SDouglas Fuller struct ceph_object_locator *oloc, 4031428a7158SDouglas Fuller const char *class, const char *method, 4032428a7158SDouglas Fuller unsigned int flags, 4033428a7158SDouglas Fuller struct page *req_page, size_t req_len, 4034428a7158SDouglas Fuller struct page *resp_page, size_t *resp_len) 4035428a7158SDouglas Fuller { 4036428a7158SDouglas Fuller struct ceph_osd_request *req; 4037428a7158SDouglas Fuller int ret; 4038428a7158SDouglas Fuller 40392544a020SIlya Dryomov if (req_len > PAGE_SIZE || (resp_page && *resp_len > PAGE_SIZE)) 40402544a020SIlya Dryomov return -E2BIG; 40412544a020SIlya Dryomov 4042428a7158SDouglas Fuller req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 4043428a7158SDouglas Fuller if (!req) 4044428a7158SDouglas Fuller return -ENOMEM; 4045428a7158SDouglas Fuller 4046428a7158SDouglas Fuller ceph_oid_copy(&req->r_base_oid, oid); 4047428a7158SDouglas Fuller ceph_oloc_copy(&req->r_base_oloc, oloc); 4048428a7158SDouglas Fuller req->r_flags = flags; 4049428a7158SDouglas Fuller 4050428a7158SDouglas Fuller ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 4051428a7158SDouglas Fuller if (ret) 4052428a7158SDouglas Fuller goto out_put_req; 4053428a7158SDouglas Fuller 4054428a7158SDouglas Fuller osd_req_op_cls_init(req, 0, CEPH_OSD_OP_CALL, class, method); 4055428a7158SDouglas Fuller if (req_page) 4056428a7158SDouglas Fuller osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len, 4057428a7158SDouglas Fuller 0, false, false); 4058428a7158SDouglas Fuller if (resp_page) 4059428a7158SDouglas Fuller osd_req_op_cls_response_data_pages(req, 0, &resp_page, 40602544a020SIlya Dryomov *resp_len, 0, false, false); 4061428a7158SDouglas Fuller 4062428a7158SDouglas Fuller ceph_osdc_start_request(osdc, req, false); 4063428a7158SDouglas Fuller ret = ceph_osdc_wait_request(osdc, req); 4064428a7158SDouglas Fuller if (ret >= 0) { 4065428a7158SDouglas Fuller ret = req->r_ops[0].rval; 4066428a7158SDouglas Fuller if (resp_page) 4067428a7158SDouglas Fuller *resp_len = req->r_ops[0].outdata_len; 4068428a7158SDouglas Fuller } 4069428a7158SDouglas Fuller 4070428a7158SDouglas Fuller out_put_req: 4071428a7158SDouglas Fuller ceph_osdc_put_request(req); 4072428a7158SDouglas Fuller return ret; 4073428a7158SDouglas Fuller } 4074428a7158SDouglas Fuller EXPORT_SYMBOL(ceph_osdc_call); 4075428a7158SDouglas Fuller 4076428a7158SDouglas Fuller /* 40773d14c5d2SYehuda Sadeh * init, shutdown 40783d14c5d2SYehuda Sadeh */ 40793d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 40803d14c5d2SYehuda Sadeh { 40813d14c5d2SYehuda Sadeh int err; 40823d14c5d2SYehuda Sadeh 40833d14c5d2SYehuda Sadeh dout("init\n"); 40843d14c5d2SYehuda Sadeh osdc->client = client; 40855aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 40863d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 40873d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 40889dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 40895aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 40905aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 40915aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 4092264048afSIlya Dryomov osdc->last_linger_id = CEPH_LINGER_ID_START; 4093922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 40944609245eSIlya Dryomov osdc->map_checks = RB_ROOT; 40954609245eSIlya Dryomov osdc->linger_map_checks = RB_ROOT; 40963d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 40973d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 40983d14c5d2SYehuda Sadeh 40993d14c5d2SYehuda Sadeh err = -ENOMEM; 4100e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 4101e5253a7bSIlya Dryomov if (!osdc->osdmap) 4102e5253a7bSIlya Dryomov goto out; 4103e5253a7bSIlya Dryomov 41049e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 41059e767adbSIlya Dryomov ceph_osd_request_cache); 41063d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 4107e5253a7bSIlya Dryomov goto out_map; 41083d14c5d2SYehuda Sadeh 4109d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 4110711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 41113d14c5d2SYehuda Sadeh if (err < 0) 41123d14c5d2SYehuda Sadeh goto out_mempool; 4113d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 4114711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 41153d14c5d2SYehuda Sadeh if (err < 0) 41163d14c5d2SYehuda Sadeh goto out_msgpool; 4117a40c4f10SYehuda Sadeh 4118dbcae088SDan Carpenter err = -ENOMEM; 4119a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 4120dbcae088SDan Carpenter if (!osdc->notify_wq) 4121c172ec5cSIlya Dryomov goto out_msgpool_reply; 4122c172ec5cSIlya Dryomov 4123fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 4124fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 4125b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 4126b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 4127b37ee1b9SIlya Dryomov 41283d14c5d2SYehuda Sadeh return 0; 41293d14c5d2SYehuda Sadeh 4130c172ec5cSIlya Dryomov out_msgpool_reply: 4131c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 41323d14c5d2SYehuda Sadeh out_msgpool: 41333d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 41343d14c5d2SYehuda Sadeh out_mempool: 41353d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 4136e5253a7bSIlya Dryomov out_map: 4137e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 41383d14c5d2SYehuda Sadeh out: 41393d14c5d2SYehuda Sadeh return err; 41403d14c5d2SYehuda Sadeh } 41413d14c5d2SYehuda Sadeh 41423d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 41433d14c5d2SYehuda Sadeh { 4144a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 4145a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 41463d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 41473d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 414842a2c09fSIlya Dryomov 41495aea3dcdSIlya Dryomov down_write(&osdc->lock); 415042a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 415142a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 415242a2c09fSIlya Dryomov struct ceph_osd, o_node); 41535aea3dcdSIlya Dryomov close_osd(osd); 415442a2c09fSIlya Dryomov } 41555aea3dcdSIlya Dryomov up_write(&osdc->lock); 41565aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->homeless_osd.o_ref) != 1); 41575aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 41585aea3dcdSIlya Dryomov 41595aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 4160922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 41614609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); 41624609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); 41635aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 41645aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 416542a2c09fSIlya Dryomov 41663d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 41673d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 41683d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 41693d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 41703d14c5d2SYehuda Sadeh } 41713d14c5d2SYehuda Sadeh 41723d14c5d2SYehuda Sadeh /* 41733d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 41743d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 41753d14c5d2SYehuda Sadeh */ 41763d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 41773d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 41783d14c5d2SYehuda Sadeh u64 off, u64 *plen, 41793d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 4180b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 41813d14c5d2SYehuda Sadeh { 41823d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 41833d14c5d2SYehuda Sadeh int rc = 0; 41843d14c5d2SYehuda Sadeh 41853d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 41863d14c5d2SYehuda Sadeh vino.snap, off, *plen); 4187715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 41883d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 4189acead002SAlex Elder NULL, truncate_seq, truncate_size, 4190153e5167SAlex Elder false); 41916816282dSSage Weil if (IS_ERR(req)) 41926816282dSSage Weil return PTR_ERR(req); 41933d14c5d2SYehuda Sadeh 41943d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 4195406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 4196a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 41973d14c5d2SYehuda Sadeh 4198e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 419943bfe5deSAlex Elder off, *plen, *plen, page_align); 42003d14c5d2SYehuda Sadeh 42013d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 42023d14c5d2SYehuda Sadeh if (!rc) 42033d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 42043d14c5d2SYehuda Sadeh 42053d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 42063d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 42073d14c5d2SYehuda Sadeh return rc; 42083d14c5d2SYehuda Sadeh } 42093d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 42103d14c5d2SYehuda Sadeh 42113d14c5d2SYehuda Sadeh /* 42123d14c5d2SYehuda Sadeh * do a synchronous write on N pages 42133d14c5d2SYehuda Sadeh */ 42143d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 42153d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 42163d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 42173d14c5d2SYehuda Sadeh u64 off, u64 len, 42183d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 42193d14c5d2SYehuda Sadeh struct timespec *mtime, 422024808826SAlex Elder struct page **pages, int num_pages) 42213d14c5d2SYehuda Sadeh { 42223d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 42233d14c5d2SYehuda Sadeh int rc = 0; 4224b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 42253d14c5d2SYehuda Sadeh 4226715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 42273d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 422824808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 4229acead002SAlex Elder snapc, truncate_seq, truncate_size, 4230153e5167SAlex Elder true); 42316816282dSSage Weil if (IS_ERR(req)) 42326816282dSSage Weil return PTR_ERR(req); 42333d14c5d2SYehuda Sadeh 42343d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 4235406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 423643bfe5deSAlex Elder false, false); 423743bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 42383d14c5d2SYehuda Sadeh 4239bb873b53SIlya Dryomov req->r_mtime = *mtime; 424087f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 42413d14c5d2SYehuda Sadeh if (!rc) 42423d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 42433d14c5d2SYehuda Sadeh 42443d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 42453d14c5d2SYehuda Sadeh if (rc == 0) 42463d14c5d2SYehuda Sadeh rc = len; 42473d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 42483d14c5d2SYehuda Sadeh return rc; 42493d14c5d2SYehuda Sadeh } 42503d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 42513d14c5d2SYehuda Sadeh 42525522ae0bSAlex Elder int ceph_osdc_setup(void) 42535522ae0bSAlex Elder { 42543f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 42553f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 42563f1af42aSIlya Dryomov 42575522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 42583f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 42593f1af42aSIlya Dryomov 0, 0, NULL); 42605522ae0bSAlex Elder 42615522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 42625522ae0bSAlex Elder } 42635522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 42645522ae0bSAlex Elder 42655522ae0bSAlex Elder void ceph_osdc_cleanup(void) 42665522ae0bSAlex Elder { 42675522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 42685522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 42695522ae0bSAlex Elder ceph_osd_request_cache = NULL; 42705522ae0bSAlex Elder } 42715522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 42725522ae0bSAlex Elder 42733d14c5d2SYehuda Sadeh /* 42743d14c5d2SYehuda Sadeh * handle incoming message 42753d14c5d2SYehuda Sadeh */ 42763d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 42773d14c5d2SYehuda Sadeh { 42783d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 42795aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 42803d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 42813d14c5d2SYehuda Sadeh 42823d14c5d2SYehuda Sadeh switch (type) { 42833d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 42843d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 42853d14c5d2SYehuda Sadeh break; 42863d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 42875aea3dcdSIlya Dryomov handle_reply(osd, msg); 42883d14c5d2SYehuda Sadeh break; 4289a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 4290a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 4291a40c4f10SYehuda Sadeh break; 42923d14c5d2SYehuda Sadeh 42933d14c5d2SYehuda Sadeh default: 42943d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 42953d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 42963d14c5d2SYehuda Sadeh } 42975aea3dcdSIlya Dryomov 42983d14c5d2SYehuda Sadeh ceph_msg_put(msg); 42993d14c5d2SYehuda Sadeh } 43003d14c5d2SYehuda Sadeh 43013d14c5d2SYehuda Sadeh /* 4302d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 4303d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 4304d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 43053d14c5d2SYehuda Sadeh */ 43063d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 43073d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 43083d14c5d2SYehuda Sadeh int *skip) 43093d14c5d2SYehuda Sadeh { 43103d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 43113d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 43125aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 43133d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 43143f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 43153d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 43165aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 43173d14c5d2SYehuda Sadeh 43185aea3dcdSIlya Dryomov down_read(&osdc->lock); 43195aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 43205aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 43215aea3dcdSIlya Dryomov *skip = 1; 43225aea3dcdSIlya Dryomov goto out_unlock_osdc; 43235aea3dcdSIlya Dryomov } 43245aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 43255aea3dcdSIlya Dryomov 43265aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 43275aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 43283d14c5d2SYehuda Sadeh if (!req) { 4329cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 4330cd8140c6SIlya Dryomov osd->o_osd, tid); 4331d15f9d69SIlya Dryomov *skip = 1; 43325aea3dcdSIlya Dryomov goto out_unlock_session; 43333d14c5d2SYehuda Sadeh } 43343d14c5d2SYehuda Sadeh 43358921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 43363d14c5d2SYehuda Sadeh 4337f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 4338d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 4339d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 4340d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 43413f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 43423f0a4ac5SIlya Dryomov false); 43433d14c5d2SYehuda Sadeh if (!m) 43445aea3dcdSIlya Dryomov goto out_unlock_session; 43453d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 43463d14c5d2SYehuda Sadeh req->r_reply = m; 43473d14c5d2SYehuda Sadeh } 43483d14c5d2SYehuda Sadeh 4349d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 4350d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 4351d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 4352d15f9d69SIlya Dryomov req->r_reply->data_length); 43533d14c5d2SYehuda Sadeh m = NULL; 4354d15f9d69SIlya Dryomov *skip = 1; 43555aea3dcdSIlya Dryomov goto out_unlock_session; 43563d14c5d2SYehuda Sadeh } 4357d15f9d69SIlya Dryomov 4358d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 43593d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 43603d14c5d2SYehuda Sadeh 43615aea3dcdSIlya Dryomov out_unlock_session: 43625aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 43635aea3dcdSIlya Dryomov out_unlock_osdc: 43645aea3dcdSIlya Dryomov up_read(&osdc->lock); 43653d14c5d2SYehuda Sadeh return m; 43663d14c5d2SYehuda Sadeh } 43673d14c5d2SYehuda Sadeh 436819079203SIlya Dryomov /* 436919079203SIlya Dryomov * TODO: switch to a msg-owned pagelist 437019079203SIlya Dryomov */ 437119079203SIlya Dryomov static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) 437219079203SIlya Dryomov { 437319079203SIlya Dryomov struct ceph_msg *m; 437419079203SIlya Dryomov int type = le16_to_cpu(hdr->type); 437519079203SIlya Dryomov u32 front_len = le32_to_cpu(hdr->front_len); 437619079203SIlya Dryomov u32 data_len = le32_to_cpu(hdr->data_len); 437719079203SIlya Dryomov 437819079203SIlya Dryomov m = ceph_msg_new(type, front_len, GFP_NOIO, false); 437919079203SIlya Dryomov if (!m) 438019079203SIlya Dryomov return NULL; 438119079203SIlya Dryomov 438219079203SIlya Dryomov if (data_len) { 438319079203SIlya Dryomov struct page **pages; 438419079203SIlya Dryomov struct ceph_osd_data osd_data; 438519079203SIlya Dryomov 438619079203SIlya Dryomov pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), 438719079203SIlya Dryomov GFP_NOIO); 4388c22e853aSWei Yongjun if (IS_ERR(pages)) { 438919079203SIlya Dryomov ceph_msg_put(m); 439019079203SIlya Dryomov return NULL; 439119079203SIlya Dryomov } 439219079203SIlya Dryomov 439319079203SIlya Dryomov ceph_osd_data_pages_init(&osd_data, pages, data_len, 0, false, 439419079203SIlya Dryomov false); 439519079203SIlya Dryomov ceph_osdc_msg_data_add(m, &osd_data); 439619079203SIlya Dryomov } 439719079203SIlya Dryomov 439819079203SIlya Dryomov return m; 439919079203SIlya Dryomov } 440019079203SIlya Dryomov 44013d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 44023d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 44033d14c5d2SYehuda Sadeh int *skip) 44043d14c5d2SYehuda Sadeh { 44053d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 44063d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 44073d14c5d2SYehuda Sadeh 44081c20f2d2SAlex Elder *skip = 0; 44093d14c5d2SYehuda Sadeh switch (type) { 44103d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 4411a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 441219079203SIlya Dryomov return alloc_msg_with_page_vector(hdr); 44133d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 44143d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 44153d14c5d2SYehuda Sadeh default: 44165aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 44175aea3dcdSIlya Dryomov osd->o_osd, type); 44183d14c5d2SYehuda Sadeh *skip = 1; 44193d14c5d2SYehuda Sadeh return NULL; 44203d14c5d2SYehuda Sadeh } 44213d14c5d2SYehuda Sadeh } 44223d14c5d2SYehuda Sadeh 44233d14c5d2SYehuda Sadeh /* 44243d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 44253d14c5d2SYehuda Sadeh */ 44263d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 44273d14c5d2SYehuda Sadeh { 44283d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 44293d14c5d2SYehuda Sadeh if (get_osd(osd)) 44303d14c5d2SYehuda Sadeh return con; 44313d14c5d2SYehuda Sadeh return NULL; 44323d14c5d2SYehuda Sadeh } 44333d14c5d2SYehuda Sadeh 44343d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 44353d14c5d2SYehuda Sadeh { 44363d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 44373d14c5d2SYehuda Sadeh put_osd(osd); 44383d14c5d2SYehuda Sadeh } 44393d14c5d2SYehuda Sadeh 44403d14c5d2SYehuda Sadeh /* 44413d14c5d2SYehuda Sadeh * authentication 44423d14c5d2SYehuda Sadeh */ 4443a3530df3SAlex Elder /* 4444a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 4445a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 4446a3530df3SAlex Elder */ 4447a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 44488f43fb53SAlex Elder int *proto, int force_new) 44493d14c5d2SYehuda Sadeh { 44503d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 44513d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 44523d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 445374f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 44543d14c5d2SYehuda Sadeh 445574f1869fSAlex Elder if (force_new && auth->authorizer) { 44566c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 445774f1869fSAlex Elder auth->authorizer = NULL; 44583d14c5d2SYehuda Sadeh } 445927859f97SSage Weil if (!auth->authorizer) { 446027859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 4461a3530df3SAlex Elder auth); 44623d14c5d2SYehuda Sadeh if (ret) 4463a3530df3SAlex Elder return ERR_PTR(ret); 446427859f97SSage Weil } else { 446527859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 44660bed9b5cSSage Weil auth); 44670bed9b5cSSage Weil if (ret) 44680bed9b5cSSage Weil return ERR_PTR(ret); 44693d14c5d2SYehuda Sadeh } 44703d14c5d2SYehuda Sadeh *proto = ac->protocol; 447174f1869fSAlex Elder 4472a3530df3SAlex Elder return auth; 44733d14c5d2SYehuda Sadeh } 44743d14c5d2SYehuda Sadeh 44753d14c5d2SYehuda Sadeh 44760dde5848SIlya Dryomov static int verify_authorizer_reply(struct ceph_connection *con) 44773d14c5d2SYehuda Sadeh { 44783d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 44793d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 44803d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 44813d14c5d2SYehuda Sadeh 44820dde5848SIlya Dryomov return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer); 44833d14c5d2SYehuda Sadeh } 44843d14c5d2SYehuda Sadeh 44853d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 44863d14c5d2SYehuda Sadeh { 44873d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 44883d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 44893d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 44903d14c5d2SYehuda Sadeh 449127859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 44923d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 44933d14c5d2SYehuda Sadeh } 44943d14c5d2SYehuda Sadeh 449579dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 449633d07337SYan, Zheng { 449779dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 449833d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 449979dbd1baSIlya Dryomov 450033d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 450133d07337SYan, Zheng } 450233d07337SYan, Zheng 450379dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 450433d07337SYan, Zheng { 450579dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 450633d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 450779dbd1baSIlya Dryomov 450833d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 450933d07337SYan, Zheng } 451033d07337SYan, Zheng 45113d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 45123d14c5d2SYehuda Sadeh .get = get_osd_con, 45133d14c5d2SYehuda Sadeh .put = put_osd_con, 45143d14c5d2SYehuda Sadeh .dispatch = dispatch, 45153d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 45163d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 45173d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 45183d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 451979dbd1baSIlya Dryomov .sign_message = osd_sign_message, 452079dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 45215aea3dcdSIlya Dryomov .fault = osd_fault, 45223d14c5d2SYehuda Sadeh }; 4523