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; 3415476492fSAlex Elder default: 3425476492fSAlex Elder break; 3435476492fSAlex Elder } 344c54d47bfSAlex Elder } 345c54d47bfSAlex Elder 3463d14c5d2SYehuda Sadeh /* 34763244fa1SIlya Dryomov * Assumes @t is zero-initialized. 34863244fa1SIlya Dryomov */ 34963244fa1SIlya Dryomov static void target_init(struct ceph_osd_request_target *t) 35063244fa1SIlya Dryomov { 35163244fa1SIlya Dryomov ceph_oid_init(&t->base_oid); 35263244fa1SIlya Dryomov ceph_oloc_init(&t->base_oloc); 35363244fa1SIlya Dryomov ceph_oid_init(&t->target_oid); 35463244fa1SIlya Dryomov ceph_oloc_init(&t->target_oloc); 35563244fa1SIlya Dryomov 35663244fa1SIlya Dryomov ceph_osds_init(&t->acting); 35763244fa1SIlya Dryomov ceph_osds_init(&t->up); 35863244fa1SIlya Dryomov t->size = -1; 35963244fa1SIlya Dryomov t->min_size = -1; 36063244fa1SIlya Dryomov 36163244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 36263244fa1SIlya Dryomov } 36363244fa1SIlya Dryomov 364922dab61SIlya Dryomov static void target_copy(struct ceph_osd_request_target *dest, 365922dab61SIlya Dryomov const struct ceph_osd_request_target *src) 366922dab61SIlya Dryomov { 367922dab61SIlya Dryomov ceph_oid_copy(&dest->base_oid, &src->base_oid); 368922dab61SIlya Dryomov ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); 369922dab61SIlya Dryomov ceph_oid_copy(&dest->target_oid, &src->target_oid); 370922dab61SIlya Dryomov ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); 371922dab61SIlya Dryomov 372922dab61SIlya Dryomov dest->pgid = src->pgid; /* struct */ 373922dab61SIlya Dryomov dest->pg_num = src->pg_num; 374922dab61SIlya Dryomov dest->pg_num_mask = src->pg_num_mask; 375922dab61SIlya Dryomov ceph_osds_copy(&dest->acting, &src->acting); 376922dab61SIlya Dryomov ceph_osds_copy(&dest->up, &src->up); 377922dab61SIlya Dryomov dest->size = src->size; 378922dab61SIlya Dryomov dest->min_size = src->min_size; 379922dab61SIlya Dryomov dest->sort_bitwise = src->sort_bitwise; 380922dab61SIlya Dryomov 381922dab61SIlya Dryomov dest->flags = src->flags; 382922dab61SIlya Dryomov dest->paused = src->paused; 383922dab61SIlya Dryomov 384922dab61SIlya Dryomov dest->osd = src->osd; 385922dab61SIlya Dryomov } 386922dab61SIlya Dryomov 38763244fa1SIlya Dryomov static void target_destroy(struct ceph_osd_request_target *t) 38863244fa1SIlya Dryomov { 38963244fa1SIlya Dryomov ceph_oid_destroy(&t->base_oid); 39063244fa1SIlya Dryomov ceph_oid_destroy(&t->target_oid); 39163244fa1SIlya Dryomov } 39263244fa1SIlya Dryomov 39363244fa1SIlya Dryomov /* 3943d14c5d2SYehuda Sadeh * requests 3953d14c5d2SYehuda Sadeh */ 3963540bfdbSIlya Dryomov static void request_release_checks(struct ceph_osd_request *req) 3973540bfdbSIlya Dryomov { 3983540bfdbSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 3994609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node)); 4003540bfdbSIlya Dryomov WARN_ON(!list_empty(&req->r_unsafe_item)); 4013540bfdbSIlya Dryomov WARN_ON(req->r_osd); 4023540bfdbSIlya Dryomov } 4033540bfdbSIlya Dryomov 4049e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 4053d14c5d2SYehuda Sadeh { 4069e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 4079e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 4085476492fSAlex Elder unsigned int which; 4093d14c5d2SYehuda Sadeh 4109e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 4119e94af20SIlya Dryomov req->r_request, req->r_reply); 4123540bfdbSIlya Dryomov request_release_checks(req); 4139e94af20SIlya Dryomov 4143d14c5d2SYehuda Sadeh if (req->r_request) 4153d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 4165aea3dcdSIlya Dryomov if (req->r_reply) 417ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 4180fff87ecSAlex Elder 4195476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 4205476492fSAlex Elder osd_req_op_data_release(req, which); 4210fff87ecSAlex Elder 422a66dd383SIlya Dryomov target_destroy(&req->r_t); 4233d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 424d30291b9SIlya Dryomov 4253d14c5d2SYehuda Sadeh if (req->r_mempool) 4263d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 4273f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 4285522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 4293f1af42aSIlya Dryomov else 4303f1af42aSIlya Dryomov kfree(req); 4313d14c5d2SYehuda Sadeh } 4329e94af20SIlya Dryomov 4339e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 4349e94af20SIlya Dryomov { 4359e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 4369e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 4379e94af20SIlya Dryomov kref_get(&req->r_kref); 4389e94af20SIlya Dryomov } 4399e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 4409e94af20SIlya Dryomov 4419e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 4429e94af20SIlya Dryomov { 4433ed97d63SIlya Dryomov if (req) { 4449e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 4459e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 4469e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 4479e94af20SIlya Dryomov } 4483ed97d63SIlya Dryomov } 4499e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 4503d14c5d2SYehuda Sadeh 4513540bfdbSIlya Dryomov static void request_init(struct ceph_osd_request *req) 4523540bfdbSIlya Dryomov { 4533540bfdbSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 4543540bfdbSIlya Dryomov memset(req, 0, sizeof(*req)); 4553540bfdbSIlya Dryomov 4563540bfdbSIlya Dryomov kref_init(&req->r_kref); 4573540bfdbSIlya Dryomov init_completion(&req->r_completion); 4583540bfdbSIlya Dryomov init_completion(&req->r_safe_completion); 4593540bfdbSIlya Dryomov RB_CLEAR_NODE(&req->r_node); 4604609245eSIlya Dryomov RB_CLEAR_NODE(&req->r_mc_node); 4613540bfdbSIlya Dryomov INIT_LIST_HEAD(&req->r_unsafe_item); 4623540bfdbSIlya Dryomov 4633540bfdbSIlya Dryomov target_init(&req->r_t); 4643540bfdbSIlya Dryomov } 4653540bfdbSIlya Dryomov 466922dab61SIlya Dryomov /* 467922dab61SIlya Dryomov * This is ugly, but it allows us to reuse linger registration and ping 468922dab61SIlya Dryomov * requests, keeping the structure of the code around send_linger{_ping}() 469922dab61SIlya Dryomov * reasonable. Setting up a min_nr=2 mempool for each linger request 470922dab61SIlya Dryomov * and dealing with copying ops (this blasts req only, watch op remains 471922dab61SIlya Dryomov * intact) isn't any better. 472922dab61SIlya Dryomov */ 473922dab61SIlya Dryomov static void request_reinit(struct ceph_osd_request *req) 474922dab61SIlya Dryomov { 475922dab61SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 476922dab61SIlya Dryomov bool mempool = req->r_mempool; 477922dab61SIlya Dryomov unsigned int num_ops = req->r_num_ops; 478922dab61SIlya Dryomov u64 snapid = req->r_snapid; 479922dab61SIlya Dryomov struct ceph_snap_context *snapc = req->r_snapc; 480922dab61SIlya Dryomov bool linger = req->r_linger; 481922dab61SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 482922dab61SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 483922dab61SIlya Dryomov 484922dab61SIlya Dryomov dout("%s req %p\n", __func__, req); 485922dab61SIlya Dryomov WARN_ON(atomic_read(&req->r_kref.refcount) != 1); 486922dab61SIlya Dryomov request_release_checks(req); 487922dab61SIlya Dryomov 488922dab61SIlya Dryomov WARN_ON(atomic_read(&request_msg->kref.refcount) != 1); 489922dab61SIlya Dryomov WARN_ON(atomic_read(&reply_msg->kref.refcount) != 1); 490922dab61SIlya Dryomov target_destroy(&req->r_t); 491922dab61SIlya Dryomov 492922dab61SIlya Dryomov request_init(req); 493922dab61SIlya Dryomov req->r_osdc = osdc; 494922dab61SIlya Dryomov req->r_mempool = mempool; 495922dab61SIlya Dryomov req->r_num_ops = num_ops; 496922dab61SIlya Dryomov req->r_snapid = snapid; 497922dab61SIlya Dryomov req->r_snapc = snapc; 498922dab61SIlya Dryomov req->r_linger = linger; 499922dab61SIlya Dryomov req->r_request = request_msg; 500922dab61SIlya Dryomov req->r_reply = reply_msg; 501922dab61SIlya Dryomov } 502922dab61SIlya Dryomov 5033d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 5043d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5051b83bef2SSage Weil unsigned int num_ops, 5063d14c5d2SYehuda Sadeh bool use_mempool, 50754a54007SAlex Elder gfp_t gfp_flags) 5083d14c5d2SYehuda Sadeh { 5093d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5103d14c5d2SYehuda Sadeh 5113d14c5d2SYehuda Sadeh if (use_mempool) { 5123f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 5133d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 5143f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 5153f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 5163d14c5d2SYehuda Sadeh } else { 5173f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 5183f1af42aSIlya Dryomov req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), 5193f1af42aSIlya Dryomov gfp_flags); 5203d14c5d2SYehuda Sadeh } 5213f1af42aSIlya Dryomov if (unlikely(!req)) 5223d14c5d2SYehuda Sadeh return NULL; 5233d14c5d2SYehuda Sadeh 5243540bfdbSIlya Dryomov request_init(req); 5253d14c5d2SYehuda Sadeh req->r_osdc = osdc; 5263d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 52779528734SAlex Elder req->r_num_ops = num_ops; 52884127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 52984127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 5303d14c5d2SYehuda Sadeh 53113d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 53213d1ad16SIlya Dryomov return req; 5333f1af42aSIlya Dryomov } 53413d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 5353f1af42aSIlya Dryomov 53613d1ad16SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 53713d1ad16SIlya Dryomov { 53813d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 53913d1ad16SIlya Dryomov struct ceph_msg *msg; 54013d1ad16SIlya Dryomov int msg_size; 5413d14c5d2SYehuda Sadeh 542d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 543d30291b9SIlya Dryomov 54413d1ad16SIlya Dryomov /* create request message */ 545ae458f5aSIlya Dryomov msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ 546ae458f5aSIlya Dryomov msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ 547ae458f5aSIlya Dryomov msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 548ae458f5aSIlya Dryomov msg_size += 1 + 8 + 4 + 4; /* pgid */ 54913d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 55013d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 551ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 552ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 55313d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 554ae458f5aSIlya Dryomov msg_size += 4; /* retry_attempt */ 555ae458f5aSIlya Dryomov 55613d1ad16SIlya Dryomov if (req->r_mempool) 5573d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 5583d14c5d2SYehuda Sadeh else 55913d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); 56013d1ad16SIlya Dryomov if (!msg) 56113d1ad16SIlya Dryomov return -ENOMEM; 5623d14c5d2SYehuda Sadeh 5633d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 5643d14c5d2SYehuda Sadeh req->r_request = msg; 5653d14c5d2SYehuda Sadeh 56613d1ad16SIlya Dryomov /* create reply message */ 56713d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 568711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 569711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 57013d1ad16SIlya Dryomov 57113d1ad16SIlya Dryomov if (req->r_mempool) 57213d1ad16SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 57313d1ad16SIlya Dryomov else 57413d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); 57513d1ad16SIlya Dryomov if (!msg) 57613d1ad16SIlya Dryomov return -ENOMEM; 57713d1ad16SIlya Dryomov 57813d1ad16SIlya Dryomov req->r_reply = msg; 57913d1ad16SIlya Dryomov 58013d1ad16SIlya Dryomov return 0; 58113d1ad16SIlya Dryomov } 58213d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 5833d14c5d2SYehuda Sadeh 584a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 585a8dd0a37SAlex Elder { 586a8dd0a37SAlex Elder switch (opcode) { 58770b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 58870b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 58970b5bfa3SIlya Dryomov #undef GENERATE_CASE 590a8dd0a37SAlex Elder default: 591a8dd0a37SAlex Elder return false; 592a8dd0a37SAlex Elder } 593a8dd0a37SAlex Elder } 594a8dd0a37SAlex Elder 59533803f33SAlex Elder /* 59633803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 59733803f33SAlex Elder * other information associated with them. It also serves as a 59833803f33SAlex Elder * common init routine for all the other init functions, below. 59933803f33SAlex Elder */ 600c99d2d4aSAlex Elder static struct ceph_osd_req_op * 60149719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 602144cba14SYan, Zheng u16 opcode, u32 flags) 60333803f33SAlex Elder { 604c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 605c99d2d4aSAlex Elder 606c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 60733803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 60833803f33SAlex Elder 609c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 61033803f33SAlex Elder memset(op, 0, sizeof (*op)); 61133803f33SAlex Elder op->op = opcode; 612144cba14SYan, Zheng op->flags = flags; 613c99d2d4aSAlex Elder 614c99d2d4aSAlex Elder return op; 61533803f33SAlex Elder } 61633803f33SAlex Elder 61749719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 618144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 61949719778SAlex Elder { 620144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 62149719778SAlex Elder } 62249719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 62349719778SAlex Elder 624c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 625c99d2d4aSAlex Elder unsigned int which, u16 opcode, 62633803f33SAlex Elder u64 offset, u64 length, 62733803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 62833803f33SAlex Elder { 629144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 630144cba14SYan, Zheng opcode, 0); 63133803f33SAlex Elder size_t payload_len = 0; 63233803f33SAlex Elder 633ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 634e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 635e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 63633803f33SAlex Elder 63733803f33SAlex Elder op->extent.offset = offset; 63833803f33SAlex Elder op->extent.length = length; 63933803f33SAlex Elder op->extent.truncate_size = truncate_size; 64033803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 641e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 64233803f33SAlex Elder payload_len += length; 64333803f33SAlex Elder 644de2aa102SIlya Dryomov op->indata_len = payload_len; 64533803f33SAlex Elder } 64633803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 64733803f33SAlex Elder 648c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 649c99d2d4aSAlex Elder unsigned int which, u64 length) 650e5975c7cSAlex Elder { 651c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 652c99d2d4aSAlex Elder u64 previous; 653c99d2d4aSAlex Elder 654c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 655c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 656c99d2d4aSAlex Elder previous = op->extent.length; 657e5975c7cSAlex Elder 658e5975c7cSAlex Elder if (length == previous) 659e5975c7cSAlex Elder return; /* Nothing to do */ 660e5975c7cSAlex Elder BUG_ON(length > previous); 661e5975c7cSAlex Elder 662e5975c7cSAlex Elder op->extent.length = length; 663de2aa102SIlya Dryomov op->indata_len -= previous - length; 664e5975c7cSAlex Elder } 665e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 666e5975c7cSAlex Elder 6672c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 6682c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 6692c63f49aSYan, Zheng { 6702c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 6712c63f49aSYan, Zheng 6722c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 6732c63f49aSYan, Zheng 6742c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 6752c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 6762c63f49aSYan, Zheng /* dup previous one */ 6772c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 6782c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 6792c63f49aSYan, Zheng op->extent = prev_op->extent; 6802c63f49aSYan, Zheng /* adjust offset */ 6812c63f49aSYan, Zheng op->extent.offset += offset_inc; 6822c63f49aSYan, Zheng op->extent.length -= offset_inc; 6832c63f49aSYan, Zheng 6842c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 6852c63f49aSYan, Zheng op->indata_len -= offset_inc; 6862c63f49aSYan, Zheng } 6872c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 6882c63f49aSYan, Zheng 689c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 69004017e29SAlex Elder u16 opcode, const char *class, const char *method) 69133803f33SAlex Elder { 692144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 693144cba14SYan, Zheng opcode, 0); 6945f562df5SAlex Elder struct ceph_pagelist *pagelist; 69533803f33SAlex Elder size_t payload_len = 0; 69633803f33SAlex Elder size_t size; 69733803f33SAlex Elder 69833803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 69933803f33SAlex Elder 7005f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 7015f562df5SAlex Elder BUG_ON(!pagelist); 7025f562df5SAlex Elder ceph_pagelist_init(pagelist); 7035f562df5SAlex Elder 70433803f33SAlex Elder op->cls.class_name = class; 70533803f33SAlex Elder size = strlen(class); 70633803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 70733803f33SAlex Elder op->cls.class_len = size; 7085f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 70933803f33SAlex Elder payload_len += size; 71033803f33SAlex Elder 71133803f33SAlex Elder op->cls.method_name = method; 71233803f33SAlex Elder size = strlen(method); 71333803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 71433803f33SAlex Elder op->cls.method_len = size; 7155f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 71633803f33SAlex Elder payload_len += size; 71733803f33SAlex Elder 718a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 7195f562df5SAlex Elder 720de2aa102SIlya Dryomov op->indata_len = payload_len; 72133803f33SAlex Elder } 72233803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 7238c042b0dSAlex Elder 724d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 725d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 726d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 727d74b50beSYan, Zheng { 728144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 729144cba14SYan, Zheng opcode, 0); 730d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 731d74b50beSYan, Zheng size_t payload_len; 732d74b50beSYan, Zheng 733d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 734d74b50beSYan, Zheng 735d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 736d74b50beSYan, Zheng if (!pagelist) 737d74b50beSYan, Zheng return -ENOMEM; 738d74b50beSYan, Zheng 739d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 740d74b50beSYan, Zheng 741d74b50beSYan, Zheng payload_len = strlen(name); 742d74b50beSYan, Zheng op->xattr.name_len = payload_len; 743d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 744d74b50beSYan, Zheng 745d74b50beSYan, Zheng op->xattr.value_len = size; 746d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 747d74b50beSYan, Zheng payload_len += size; 748d74b50beSYan, Zheng 749d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 750d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 751d74b50beSYan, Zheng 752d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 753de2aa102SIlya Dryomov op->indata_len = payload_len; 754d74b50beSYan, Zheng return 0; 755d74b50beSYan, Zheng } 756d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 757d74b50beSYan, Zheng 758922dab61SIlya Dryomov /* 759922dab61SIlya Dryomov * @watch_opcode: CEPH_OSD_WATCH_OP_* 760922dab61SIlya Dryomov */ 761922dab61SIlya Dryomov static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, 762922dab61SIlya Dryomov u64 cookie, u8 watch_opcode) 76333803f33SAlex Elder { 764922dab61SIlya Dryomov struct ceph_osd_req_op *op; 76533803f33SAlex Elder 766922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); 76733803f33SAlex Elder op->watch.cookie = cookie; 768922dab61SIlya Dryomov op->watch.op = watch_opcode; 769922dab61SIlya Dryomov op->watch.gen = 0; 77033803f33SAlex Elder } 77133803f33SAlex Elder 772c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 773c647b8a8SIlya Dryomov unsigned int which, 774c647b8a8SIlya Dryomov u64 expected_object_size, 775c647b8a8SIlya Dryomov u64 expected_write_size) 776c647b8a8SIlya Dryomov { 777c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 778144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 779144cba14SYan, Zheng 0); 780c647b8a8SIlya Dryomov 781c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 782c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 783c647b8a8SIlya Dryomov 784c647b8a8SIlya Dryomov /* 785c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 786c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 787c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 788c647b8a8SIlya Dryomov */ 789c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 790c647b8a8SIlya Dryomov } 791c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 792c647b8a8SIlya Dryomov 79390af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 794ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 795ec9123c5SAlex Elder { 796ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 797ec9123c5SAlex Elder 798ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 799ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 800ec9123c5SAlex Elder if (length) 80190af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 802ec9123c5SAlex Elder length, osd_data->alignment); 803ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 804ec9123c5SAlex Elder BUG_ON(!length); 80590af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 806ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 807ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 80890af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 809ec9123c5SAlex Elder #endif 810ec9123c5SAlex Elder } else { 811ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 812ec9123c5SAlex Elder } 813ec9123c5SAlex Elder } 814ec9123c5SAlex Elder 815bb873b53SIlya Dryomov static u32 osd_req_encode_op(struct ceph_osd_op *dst, 816bb873b53SIlya Dryomov const struct ceph_osd_req_op *src) 8173d14c5d2SYehuda Sadeh { 818a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 819a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 820a8dd0a37SAlex Elder 821a8dd0a37SAlex Elder return 0; 822a8dd0a37SAlex Elder } 8233d14c5d2SYehuda Sadeh 824065a68f9SAlex Elder switch (src->op) { 825fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 826fbfab539SAlex Elder break; 8273d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 8283d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 829e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 830ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 831ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 832175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 833175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 8343d14c5d2SYehuda Sadeh dst->extent.truncate_size = 8353d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 8363d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 8373d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 8383d14c5d2SYehuda Sadeh break; 8393d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 8403d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 8413d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 842bb873b53SIlya Dryomov dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 8433d14c5d2SYehuda Sadeh break; 8443d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 8453d14c5d2SYehuda Sadeh break; 846a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 847a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 848922dab61SIlya Dryomov dst->watch.ver = cpu_to_le64(0); 849922dab61SIlya Dryomov dst->watch.op = src->watch.op; 850922dab61SIlya Dryomov dst->watch.gen = cpu_to_le32(src->watch.gen); 851922dab61SIlya Dryomov break; 852922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 853a40c4f10SYehuda Sadeh break; 85419079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 85519079203SIlya Dryomov dst->notify.cookie = cpu_to_le64(src->notify.cookie); 85619079203SIlya Dryomov break; 857c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 858c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 859c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 860c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 861c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 862c647b8a8SIlya Dryomov break; 863d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 864d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 865d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 866d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 867d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 868d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 869d74b50beSYan, Zheng break; 870864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 871864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 872864e9197SYan, Zheng break; 8733d14c5d2SYehuda Sadeh default: 8744c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 8758f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 8764c46459cSAlex Elder WARN_ON(1); 877a8dd0a37SAlex Elder 878a8dd0a37SAlex Elder return 0; 8793d14c5d2SYehuda Sadeh } 8807b25bf5fSIlya Dryomov 881a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 8827b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 883de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 884175face2SAlex Elder 885bb873b53SIlya Dryomov return src->indata_len; 8863d14c5d2SYehuda Sadeh } 8873d14c5d2SYehuda Sadeh 8883d14c5d2SYehuda Sadeh /* 8893d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 8903d14c5d2SYehuda Sadeh * extent as needed. 8913d14c5d2SYehuda Sadeh * 8923d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 8933d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 8943d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 8953d14c5d2SYehuda Sadeh * 8963d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 8973d14c5d2SYehuda Sadeh * data quickly. 8983d14c5d2SYehuda Sadeh */ 8993d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 9003d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 9013d14c5d2SYehuda Sadeh struct ceph_vino vino, 902715e4cd4SYan, Zheng u64 off, u64 *plen, 903715e4cd4SYan, Zheng unsigned int which, int num_ops, 9043d14c5d2SYehuda Sadeh int opcode, int flags, 9053d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 9063d14c5d2SYehuda Sadeh u32 truncate_seq, 9073d14c5d2SYehuda Sadeh u64 truncate_size, 908153e5167SAlex Elder bool use_mempool) 9093d14c5d2SYehuda Sadeh { 9103d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 91175d1c941SAlex Elder u64 objnum = 0; 91275d1c941SAlex Elder u64 objoff = 0; 91375d1c941SAlex Elder u64 objlen = 0; 9146816282dSSage Weil int r; 9153d14c5d2SYehuda Sadeh 916ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 917864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 918864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 9193d14c5d2SYehuda Sadeh 920acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 921ae7ca4a3SAlex Elder GFP_NOFS); 92213d1ad16SIlya Dryomov if (!req) { 92313d1ad16SIlya Dryomov r = -ENOMEM; 92413d1ad16SIlya Dryomov goto fail; 92513d1ad16SIlya Dryomov } 92679528734SAlex Elder 9273d14c5d2SYehuda Sadeh /* calculate max write size */ 928a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 92913d1ad16SIlya Dryomov if (r) 93013d1ad16SIlya Dryomov goto fail; 931a19dadfbSAlex Elder 932864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 933144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 934864e9197SYan, Zheng } else { 935864e9197SYan, Zheng u32 object_size = le32_to_cpu(layout->fl_object_size); 936864e9197SYan, Zheng u32 object_base = off - objoff; 937ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 938d18d1e28SAlex Elder if (truncate_size <= object_base) { 939d18d1e28SAlex Elder truncate_size = 0; 940d18d1e28SAlex Elder } else { 941d18d1e28SAlex Elder truncate_size -= object_base; 942d18d1e28SAlex Elder if (truncate_size > object_size) 943d18d1e28SAlex Elder truncate_size = object_size; 944d18d1e28SAlex Elder } 945ccca4e37SYan, Zheng } 946715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 947b0270324SAlex Elder truncate_size, truncate_seq); 948864e9197SYan, Zheng } 949d18d1e28SAlex Elder 950bb873b53SIlya Dryomov req->r_flags = flags; 9513c972c95SIlya Dryomov req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); 952d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 953dbe0fc41SAlex Elder 954bb873b53SIlya Dryomov req->r_snapid = vino.snap; 955bb873b53SIlya Dryomov if (flags & CEPH_OSD_FLAG_WRITE) 956bb873b53SIlya Dryomov req->r_data_offset = off; 957bb873b53SIlya Dryomov 95813d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 95913d1ad16SIlya Dryomov if (r) 96013d1ad16SIlya Dryomov goto fail; 96113d1ad16SIlya Dryomov 9623d14c5d2SYehuda Sadeh return req; 96313d1ad16SIlya Dryomov 96413d1ad16SIlya Dryomov fail: 96513d1ad16SIlya Dryomov ceph_osdc_put_request(req); 96613d1ad16SIlya Dryomov return ERR_PTR(r); 9673d14c5d2SYehuda Sadeh } 9683d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 9693d14c5d2SYehuda Sadeh 9703d14c5d2SYehuda Sadeh /* 9713d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 9723d14c5d2SYehuda Sadeh */ 973fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 9744609245eSIlya Dryomov DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) 9753d14c5d2SYehuda Sadeh 9760247a0cfSIlya Dryomov static bool osd_homeless(struct ceph_osd *osd) 9770247a0cfSIlya Dryomov { 9780247a0cfSIlya Dryomov return osd->o_osd == CEPH_HOMELESS_OSD; 9790247a0cfSIlya Dryomov } 9800247a0cfSIlya Dryomov 9815aea3dcdSIlya Dryomov static bool osd_registered(struct ceph_osd *osd) 9823d14c5d2SYehuda Sadeh { 9835aea3dcdSIlya Dryomov verify_osdc_locked(osd->o_osdc); 9843d14c5d2SYehuda Sadeh 9855aea3dcdSIlya Dryomov return !RB_EMPTY_NODE(&osd->o_node); 9863d14c5d2SYehuda Sadeh } 9873d14c5d2SYehuda Sadeh 9883d14c5d2SYehuda Sadeh /* 9890247a0cfSIlya Dryomov * Assumes @osd is zero-initialized. 9900247a0cfSIlya Dryomov */ 9910247a0cfSIlya Dryomov static void osd_init(struct ceph_osd *osd) 9920247a0cfSIlya Dryomov { 9930247a0cfSIlya Dryomov atomic_set(&osd->o_ref, 1); 9940247a0cfSIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 9955aea3dcdSIlya Dryomov osd->o_requests = RB_ROOT; 996922dab61SIlya Dryomov osd->o_linger_requests = RB_ROOT; 9970247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_osd_lru); 9980247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_keepalive_item); 9990247a0cfSIlya Dryomov osd->o_incarnation = 1; 10005aea3dcdSIlya Dryomov mutex_init(&osd->lock); 10010247a0cfSIlya Dryomov } 10020247a0cfSIlya Dryomov 10030247a0cfSIlya Dryomov static void osd_cleanup(struct ceph_osd *osd) 10040247a0cfSIlya Dryomov { 10050247a0cfSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); 10065aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 1007922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 10080247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_osd_lru)); 10090247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_keepalive_item)); 10100247a0cfSIlya Dryomov 10110247a0cfSIlya Dryomov if (osd->o_auth.authorizer) { 10120247a0cfSIlya Dryomov WARN_ON(osd_homeless(osd)); 10130247a0cfSIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 10140247a0cfSIlya Dryomov } 10150247a0cfSIlya Dryomov } 10160247a0cfSIlya Dryomov 10170247a0cfSIlya Dryomov /* 10183d14c5d2SYehuda Sadeh * Track open sessions with osds. 10193d14c5d2SYehuda Sadeh */ 1020e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10213d14c5d2SYehuda Sadeh { 10223d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10233d14c5d2SYehuda Sadeh 10240247a0cfSIlya Dryomov WARN_ON(onum == CEPH_HOMELESS_OSD); 10250247a0cfSIlya Dryomov 10267a28f59bSIlya Dryomov osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); 10270247a0cfSIlya Dryomov osd_init(osd); 10283d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1029e10006f8SAlex Elder osd->o_osd = onum; 10303d14c5d2SYehuda Sadeh 1031b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10323d14c5d2SYehuda Sadeh 10333d14c5d2SYehuda Sadeh return osd; 10343d14c5d2SYehuda Sadeh } 10353d14c5d2SYehuda Sadeh 10363d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 10373d14c5d2SYehuda Sadeh { 10383d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 10393d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 10403d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 10413d14c5d2SYehuda Sadeh return osd; 10423d14c5d2SYehuda Sadeh } else { 10433d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10443d14c5d2SYehuda Sadeh return NULL; 10453d14c5d2SYehuda Sadeh } 10463d14c5d2SYehuda Sadeh } 10473d14c5d2SYehuda Sadeh 10483d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 10493d14c5d2SYehuda Sadeh { 10503d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 10513d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 1052b28ec2f3SIlya Dryomov if (atomic_dec_and_test(&osd->o_ref)) { 10530247a0cfSIlya Dryomov osd_cleanup(osd); 10543d14c5d2SYehuda Sadeh kfree(osd); 10553d14c5d2SYehuda Sadeh } 10563d14c5d2SYehuda Sadeh } 10573d14c5d2SYehuda Sadeh 1058fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1059fcd00b68SIlya Dryomov 10609dd2845cSIlya Dryomov static void __move_osd_to_lru(struct ceph_osd *osd) 10613d14c5d2SYehuda Sadeh { 10629dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 10639dd2845cSIlya Dryomov 10649dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 10653d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1066bbf37ec3SIlya Dryomov 10679dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 10683d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 10699dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 10709dd2845cSIlya Dryomov 1071a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 10723d14c5d2SYehuda Sadeh } 10733d14c5d2SYehuda Sadeh 10749dd2845cSIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd *osd) 1075bbf37ec3SIlya Dryomov { 10765aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1077922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) 10789dd2845cSIlya Dryomov __move_osd_to_lru(osd); 1079bbf37ec3SIlya Dryomov } 1080bbf37ec3SIlya Dryomov 10813d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 10823d14c5d2SYehuda Sadeh { 10839dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 10849dd2845cSIlya Dryomov 10859dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 10869dd2845cSIlya Dryomov 10879dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 10883d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 10893d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 10909dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 10913d14c5d2SYehuda Sadeh } 10923d14c5d2SYehuda Sadeh 10933d14c5d2SYehuda Sadeh /* 10945aea3dcdSIlya Dryomov * Close the connection and assign any leftover requests to the 10955aea3dcdSIlya Dryomov * homeless session. 10965aea3dcdSIlya Dryomov */ 10975aea3dcdSIlya Dryomov static void close_osd(struct ceph_osd *osd) 10985aea3dcdSIlya Dryomov { 10995aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 11005aea3dcdSIlya Dryomov struct rb_node *n; 11015aea3dcdSIlya Dryomov 11025aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 11035aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11045aea3dcdSIlya Dryomov 11055aea3dcdSIlya Dryomov ceph_con_close(&osd->o_con); 11065aea3dcdSIlya Dryomov 11075aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 11085aea3dcdSIlya Dryomov struct ceph_osd_request *req = 11095aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 11105aea3dcdSIlya Dryomov 11115aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 11125aea3dcdSIlya Dryomov 11135aea3dcdSIlya Dryomov dout(" reassigning req %p tid %llu\n", req, req->r_tid); 11145aea3dcdSIlya Dryomov unlink_request(osd, req); 11155aea3dcdSIlya Dryomov link_request(&osdc->homeless_osd, req); 11165aea3dcdSIlya Dryomov } 1117922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 1118922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1119922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 1120922dab61SIlya Dryomov 1121922dab61SIlya Dryomov n = rb_next(n); /* unlink_linger() */ 1122922dab61SIlya Dryomov 1123922dab61SIlya Dryomov dout(" reassigning lreq %p linger_id %llu\n", lreq, 1124922dab61SIlya Dryomov lreq->linger_id); 1125922dab61SIlya Dryomov unlink_linger(osd, lreq); 1126922dab61SIlya Dryomov link_linger(&osdc->homeless_osd, lreq); 1127922dab61SIlya Dryomov } 11285aea3dcdSIlya Dryomov 11295aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 11305aea3dcdSIlya Dryomov erase_osd(&osdc->osds, osd); 11315aea3dcdSIlya Dryomov put_osd(osd); 11325aea3dcdSIlya Dryomov } 11335aea3dcdSIlya Dryomov 11345aea3dcdSIlya Dryomov /* 11353d14c5d2SYehuda Sadeh * reset osd connect 11363d14c5d2SYehuda Sadeh */ 11375aea3dcdSIlya Dryomov static int reopen_osd(struct ceph_osd *osd) 11383d14c5d2SYehuda Sadeh { 1139c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 11403d14c5d2SYehuda Sadeh 11415aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11425aea3dcdSIlya Dryomov 11435aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1144922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) { 11455aea3dcdSIlya Dryomov close_osd(osd); 1146c3acb181SAlex Elder return -ENODEV; 1147c3acb181SAlex Elder } 1148c3acb181SAlex Elder 11495aea3dcdSIlya Dryomov peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; 1150c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 11513d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 11525aea3dcdSIlya Dryomov struct rb_node *n; 1153c3acb181SAlex Elder 11543d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 11550b4af2e8SIlya Dryomov "letting msgr retry\n"); 11563d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 11575aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 11585aea3dcdSIlya Dryomov struct ceph_osd_request *req = 11595aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 11603d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 11615aea3dcdSIlya Dryomov } 1162c3acb181SAlex Elder 1163c3acb181SAlex Elder return -EAGAIN; 11643d14c5d2SYehuda Sadeh } 1165c3acb181SAlex Elder 1166c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1167c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1168c3acb181SAlex Elder osd->o_incarnation++; 1169c3acb181SAlex Elder 1170c3acb181SAlex Elder return 0; 11713d14c5d2SYehuda Sadeh } 11723d14c5d2SYehuda Sadeh 11735aea3dcdSIlya Dryomov static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, 11745aea3dcdSIlya Dryomov bool wrlocked) 11753d14c5d2SYehuda Sadeh { 11765aea3dcdSIlya Dryomov struct ceph_osd *osd; 11775aea3dcdSIlya Dryomov 11785aea3dcdSIlya Dryomov if (wrlocked) 11795aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 11805aea3dcdSIlya Dryomov else 11815aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 11825aea3dcdSIlya Dryomov 11835aea3dcdSIlya Dryomov if (o != CEPH_HOMELESS_OSD) 11845aea3dcdSIlya Dryomov osd = lookup_osd(&osdc->osds, o); 11855aea3dcdSIlya Dryomov else 11865aea3dcdSIlya Dryomov osd = &osdc->homeless_osd; 11875aea3dcdSIlya Dryomov if (!osd) { 11885aea3dcdSIlya Dryomov if (!wrlocked) 11895aea3dcdSIlya Dryomov return ERR_PTR(-EAGAIN); 11905aea3dcdSIlya Dryomov 11915aea3dcdSIlya Dryomov osd = create_osd(osdc, o); 11925aea3dcdSIlya Dryomov insert_osd(&osdc->osds, osd); 11935aea3dcdSIlya Dryomov ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, 11945aea3dcdSIlya Dryomov &osdc->osdmap->osd_addr[osd->o_osd]); 11955aea3dcdSIlya Dryomov } 11965aea3dcdSIlya Dryomov 11975aea3dcdSIlya Dryomov dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); 11985aea3dcdSIlya Dryomov return osd; 1199a40c4f10SYehuda Sadeh } 1200a40c4f10SYehuda Sadeh 12013d14c5d2SYehuda Sadeh /* 12025aea3dcdSIlya Dryomov * Create request <-> OSD session relation. 12035aea3dcdSIlya Dryomov * 12045aea3dcdSIlya Dryomov * @req has to be assigned a tid, @osd may be homeless. 12053d14c5d2SYehuda Sadeh */ 12065aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) 12073d14c5d2SYehuda Sadeh { 12085aea3dcdSIlya Dryomov verify_osd_locked(osd); 12095aea3dcdSIlya Dryomov WARN_ON(!req->r_tid || req->r_osd); 12105aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 121135f9f8a0SSage Weil req, req->r_tid); 12125aea3dcdSIlya Dryomov 12135aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 12145aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 12155aea3dcdSIlya Dryomov else 12165aea3dcdSIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 12175aea3dcdSIlya Dryomov 12185aea3dcdSIlya Dryomov get_osd(osd); 12195aea3dcdSIlya Dryomov insert_request(&osd->o_requests, req); 12205aea3dcdSIlya Dryomov req->r_osd = osd; 122135f9f8a0SSage Weil } 122235f9f8a0SSage Weil 12235aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) 12243d14c5d2SYehuda Sadeh { 12255aea3dcdSIlya Dryomov verify_osd_locked(osd); 12265aea3dcdSIlya Dryomov WARN_ON(req->r_osd != osd); 12275aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 12285aea3dcdSIlya Dryomov req, req->r_tid); 12295aea3dcdSIlya Dryomov 12305aea3dcdSIlya Dryomov req->r_osd = NULL; 12315aea3dcdSIlya Dryomov erase_request(&osd->o_requests, req); 12325aea3dcdSIlya Dryomov put_osd(osd); 12335aea3dcdSIlya Dryomov 12345aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 12355aea3dcdSIlya Dryomov maybe_move_osd_to_lru(osd); 12365aea3dcdSIlya Dryomov else 12375aea3dcdSIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 12383d14c5d2SYehuda Sadeh } 12393d14c5d2SYehuda Sadeh 124063244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 124163244fa1SIlya Dryomov { 124263244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 124363244fa1SIlya Dryomov } 124463244fa1SIlya Dryomov 124542c1b124SIlya Dryomov static bool have_pool_full(struct ceph_osd_client *osdc) 124642c1b124SIlya Dryomov { 124742c1b124SIlya Dryomov struct rb_node *n; 124842c1b124SIlya Dryomov 124942c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 125042c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 125142c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 125242c1b124SIlya Dryomov 125342c1b124SIlya Dryomov if (__pool_full(pi)) 125442c1b124SIlya Dryomov return true; 125542c1b124SIlya Dryomov } 125642c1b124SIlya Dryomov 125742c1b124SIlya Dryomov return false; 125842c1b124SIlya Dryomov } 125942c1b124SIlya Dryomov 12605aea3dcdSIlya Dryomov static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) 12615aea3dcdSIlya Dryomov { 12625aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 12635aea3dcdSIlya Dryomov 12645aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 12655aea3dcdSIlya Dryomov if (!pi) 12665aea3dcdSIlya Dryomov return false; 12675aea3dcdSIlya Dryomov 12685aea3dcdSIlya Dryomov return __pool_full(pi); 12695aea3dcdSIlya Dryomov } 12705aea3dcdSIlya Dryomov 12713d14c5d2SYehuda Sadeh /* 1272d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1273d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1274d29adb34SJosh Durgin */ 127563244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 127663244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 127763244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 127863244fa1SIlya Dryomov { 127963244fa1SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 128063244fa1SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 128163244fa1SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 128263244fa1SIlya Dryomov __pool_full(pi); 128363244fa1SIlya Dryomov 128463244fa1SIlya Dryomov WARN_ON(pi->id != t->base_oloc.pool); 128563244fa1SIlya Dryomov return (t->flags & CEPH_OSD_FLAG_READ && pauserd) || 128663244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_WRITE && pausewr); 128763244fa1SIlya Dryomov } 128863244fa1SIlya Dryomov 128963244fa1SIlya Dryomov enum calc_target_result { 129063244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 129163244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 129263244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 129363244fa1SIlya Dryomov }; 129463244fa1SIlya Dryomov 129563244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 129663244fa1SIlya Dryomov struct ceph_osd_request_target *t, 129763244fa1SIlya Dryomov u32 *last_force_resend, 129863244fa1SIlya Dryomov bool any_change) 129963244fa1SIlya Dryomov { 130063244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 130163244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 130263244fa1SIlya Dryomov struct ceph_osds up, acting; 130363244fa1SIlya Dryomov bool force_resend = false; 130463244fa1SIlya Dryomov bool need_check_tiering = false; 130563244fa1SIlya Dryomov bool need_resend = false; 130663244fa1SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc->osdmap, 130763244fa1SIlya Dryomov CEPH_OSDMAP_SORTBITWISE); 130863244fa1SIlya Dryomov enum calc_target_result ct_res; 130963244fa1SIlya Dryomov int ret; 131063244fa1SIlya Dryomov 131163244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 131263244fa1SIlya Dryomov if (!pi) { 131363244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 131463244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 131563244fa1SIlya Dryomov goto out; 131663244fa1SIlya Dryomov } 131763244fa1SIlya Dryomov 131863244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 131963244fa1SIlya Dryomov if (last_force_resend && 132063244fa1SIlya Dryomov *last_force_resend < pi->last_force_request_resend) { 132163244fa1SIlya Dryomov *last_force_resend = pi->last_force_request_resend; 132263244fa1SIlya Dryomov force_resend = true; 132363244fa1SIlya Dryomov } else if (!last_force_resend) { 132463244fa1SIlya Dryomov force_resend = true; 132563244fa1SIlya Dryomov } 132663244fa1SIlya Dryomov } 132763244fa1SIlya Dryomov if (ceph_oid_empty(&t->target_oid) || force_resend) { 132863244fa1SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 132963244fa1SIlya Dryomov need_check_tiering = true; 133063244fa1SIlya Dryomov } 133163244fa1SIlya Dryomov if (ceph_oloc_empty(&t->target_oloc) || force_resend) { 133263244fa1SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 133363244fa1SIlya Dryomov need_check_tiering = true; 133463244fa1SIlya Dryomov } 133563244fa1SIlya Dryomov 133663244fa1SIlya Dryomov if (need_check_tiering && 133763244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 133863244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) 133963244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 134063244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) 134163244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 134263244fa1SIlya Dryomov } 134363244fa1SIlya Dryomov 134463244fa1SIlya Dryomov ret = ceph_object_locator_to_pg(osdc->osdmap, &t->target_oid, 134563244fa1SIlya Dryomov &t->target_oloc, &pgid); 134663244fa1SIlya Dryomov if (ret) { 134763244fa1SIlya Dryomov WARN_ON(ret != -ENOENT); 134863244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 134963244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 135063244fa1SIlya Dryomov goto out; 135163244fa1SIlya Dryomov } 135263244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 135363244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 135463244fa1SIlya Dryomov 135563244fa1SIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting); 135663244fa1SIlya Dryomov if (any_change && 135763244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 135863244fa1SIlya Dryomov &acting, 135963244fa1SIlya Dryomov &t->up, 136063244fa1SIlya Dryomov &up, 136163244fa1SIlya Dryomov t->size, 136263244fa1SIlya Dryomov pi->size, 136363244fa1SIlya Dryomov t->min_size, 136463244fa1SIlya Dryomov pi->min_size, 136563244fa1SIlya Dryomov t->pg_num, 136663244fa1SIlya Dryomov pi->pg_num, 136763244fa1SIlya Dryomov t->sort_bitwise, 136863244fa1SIlya Dryomov sort_bitwise, 136963244fa1SIlya Dryomov &last_pgid)) 137063244fa1SIlya Dryomov force_resend = true; 137163244fa1SIlya Dryomov 137263244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 137363244fa1SIlya Dryomov t->paused = false; 137463244fa1SIlya Dryomov need_resend = true; 137563244fa1SIlya Dryomov } 137663244fa1SIlya Dryomov 137763244fa1SIlya Dryomov if (ceph_pg_compare(&t->pgid, &pgid) || 137863244fa1SIlya Dryomov ceph_osds_changed(&t->acting, &acting, any_change) || 137963244fa1SIlya Dryomov force_resend) { 138063244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 138163244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 138263244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 138363244fa1SIlya Dryomov t->size = pi->size; 138463244fa1SIlya Dryomov t->min_size = pi->min_size; 138563244fa1SIlya Dryomov t->pg_num = pi->pg_num; 138663244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 138763244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 138863244fa1SIlya Dryomov 138963244fa1SIlya Dryomov t->osd = acting.primary; 139063244fa1SIlya Dryomov need_resend = true; 139163244fa1SIlya Dryomov } 139263244fa1SIlya Dryomov 139363244fa1SIlya Dryomov ct_res = need_resend ? CALC_TARGET_NEED_RESEND : CALC_TARGET_NO_ACTION; 139463244fa1SIlya Dryomov out: 139563244fa1SIlya Dryomov dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); 139663244fa1SIlya Dryomov return ct_res; 139763244fa1SIlya Dryomov } 139863244fa1SIlya Dryomov 1399bb873b53SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req, 1400bb873b53SIlya Dryomov struct ceph_msg *msg) 14013d14c5d2SYehuda Sadeh { 1402bb873b53SIlya Dryomov u32 data_len = 0; 1403bb873b53SIlya Dryomov int i; 14043d14c5d2SYehuda Sadeh 1405bb873b53SIlya Dryomov if (!list_empty(&msg->data)) 1406bb873b53SIlya Dryomov return; 14073d14c5d2SYehuda Sadeh 1408bb873b53SIlya Dryomov WARN_ON(msg->data_length); 1409bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1410bb873b53SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[i]; 1411bb873b53SIlya Dryomov 1412bb873b53SIlya Dryomov switch (op->op) { 1413bb873b53SIlya Dryomov /* request */ 1414bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 1415bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 1416bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 1417bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->extent.osd_data); 1418bb873b53SIlya Dryomov break; 1419bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 1420bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 1421bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 1422bb873b53SIlya Dryomov op->xattr.value_len); 1423bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->xattr.osd_data); 1424bb873b53SIlya Dryomov break; 1425922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 1426922dab61SIlya Dryomov ceph_osdc_msg_data_add(msg, 1427922dab61SIlya Dryomov &op->notify_ack.request_data); 1428922dab61SIlya Dryomov break; 1429bb873b53SIlya Dryomov 1430bb873b53SIlya Dryomov /* reply */ 1431bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 1432bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1433bb873b53SIlya Dryomov &op->raw_data_in); 1434bb873b53SIlya Dryomov break; 1435bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 1436bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1437bb873b53SIlya Dryomov &op->extent.osd_data); 1438bb873b53SIlya Dryomov break; 1439bb873b53SIlya Dryomov 1440bb873b53SIlya Dryomov /* both */ 1441bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 1442bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 1443bb873b53SIlya Dryomov op->cls.method_len + 1444bb873b53SIlya Dryomov op->cls.indata_len); 1445bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_info); 1446bb873b53SIlya Dryomov /* optional, can be NONE */ 1447bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_data); 1448bb873b53SIlya Dryomov /* optional, can be NONE */ 1449bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1450bb873b53SIlya Dryomov &op->cls.response_data); 1451bb873b53SIlya Dryomov break; 145219079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 145319079203SIlya Dryomov ceph_osdc_msg_data_add(msg, 145419079203SIlya Dryomov &op->notify.request_data); 145519079203SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 145619079203SIlya Dryomov &op->notify.response_data); 145719079203SIlya Dryomov break; 1458bb873b53SIlya Dryomov } 1459bb873b53SIlya Dryomov 1460bb873b53SIlya Dryomov data_len += op->indata_len; 1461bb873b53SIlya Dryomov } 1462bb873b53SIlya Dryomov 1463bb873b53SIlya Dryomov WARN_ON(data_len != msg->data_length); 1464bb873b53SIlya Dryomov } 1465bb873b53SIlya Dryomov 1466bb873b53SIlya Dryomov static void encode_request(struct ceph_osd_request *req, struct ceph_msg *msg) 1467bb873b53SIlya Dryomov { 1468bb873b53SIlya Dryomov void *p = msg->front.iov_base; 1469bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 1470bb873b53SIlya Dryomov u32 data_len = 0; 1471bb873b53SIlya Dryomov int i; 1472bb873b53SIlya Dryomov 1473bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 1474bb873b53SIlya Dryomov /* snapshots aren't writeable */ 1475bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 1476bb873b53SIlya Dryomov } else { 1477bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 1478bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 1479bb873b53SIlya Dryomov } 1480bb873b53SIlya Dryomov 1481bb873b53SIlya Dryomov setup_request_data(req, msg); 1482bb873b53SIlya Dryomov 1483bb873b53SIlya Dryomov ceph_encode_32(&p, 1); /* client_inc, always 1 */ 1484bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 1485bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 1486bb873b53SIlya Dryomov ceph_encode_timespec(p, &req->r_mtime); 1487bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 1488bb873b53SIlya Dryomov /* aka reassert_version */ 1489bb873b53SIlya Dryomov memcpy(p, &req->r_replay_version, sizeof(req->r_replay_version)); 1490bb873b53SIlya Dryomov p += sizeof(req->r_replay_version); 1491bb873b53SIlya Dryomov 1492bb873b53SIlya Dryomov /* oloc */ 1493bb873b53SIlya Dryomov ceph_encode_8(&p, 4); 1494bb873b53SIlya Dryomov ceph_encode_8(&p, 4); 1495bb873b53SIlya Dryomov ceph_encode_32(&p, 8 + 4 + 4); 1496bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_t.target_oloc.pool); 1497bb873b53SIlya Dryomov ceph_encode_32(&p, -1); /* preferred */ 1498bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* key len */ 1499bb873b53SIlya Dryomov 1500bb873b53SIlya Dryomov /* pgid */ 1501bb873b53SIlya Dryomov ceph_encode_8(&p, 1); 1502a66dd383SIlya Dryomov ceph_encode_64(&p, req->r_t.pgid.pool); 1503a66dd383SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); 1504bb873b53SIlya Dryomov ceph_encode_32(&p, -1); /* preferred */ 15052169aea6SSage Weil 1506bb873b53SIlya Dryomov /* oid */ 1507bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_t.target_oid.name_len); 1508bb873b53SIlya Dryomov memcpy(p, req->r_t.target_oid.name, req->r_t.target_oid.name_len); 1509bb873b53SIlya Dryomov p += req->r_t.target_oid.name_len; 1510bb873b53SIlya Dryomov 1511bb873b53SIlya Dryomov /* ops, can imply data */ 1512bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 1513bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1514bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 1515bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 1516bb873b53SIlya Dryomov } 1517bb873b53SIlya Dryomov 1518bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 1519bb873b53SIlya Dryomov if (req->r_snapc) { 1520bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 1521bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 1522bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 1523bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 1524bb873b53SIlya Dryomov } else { 1525bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 1526bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 1527bb873b53SIlya Dryomov } 1528bb873b53SIlya Dryomov 1529bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 1530bb873b53SIlya Dryomov 1531bb873b53SIlya Dryomov BUG_ON(p > end); 1532bb873b53SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 1533bb873b53SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 1534bb873b53SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 1535bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 1536bb873b53SIlya Dryomov /* 1537bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 1538bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 1539bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 1540bb873b53SIlya Dryomov */ 1541bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 1542bb873b53SIlya Dryomov 1543bb873b53SIlya Dryomov dout("%s req %p oid %*pE oid_len %d front %zu data %u\n", __func__, 1544bb873b53SIlya Dryomov req, req->r_t.target_oid.name_len, req->r_t.target_oid.name, 1545bb873b53SIlya Dryomov req->r_t.target_oid.name_len, msg->front.iov_len, data_len); 1546bb873b53SIlya Dryomov } 1547bb873b53SIlya Dryomov 1548bb873b53SIlya Dryomov /* 1549bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 1550bb873b53SIlya Dryomov */ 1551bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 1552bb873b53SIlya Dryomov { 1553bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 1554bb873b53SIlya Dryomov 15555aea3dcdSIlya Dryomov verify_osd_locked(osd); 1556bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 1557bb873b53SIlya Dryomov 15585aea3dcdSIlya Dryomov /* 15595aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 15605aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 15615aea3dcdSIlya Dryomov */ 15625aea3dcdSIlya Dryomov if (req->r_sent) 15635aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 15645aea3dcdSIlya Dryomov 1565bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 1566bb873b53SIlya Dryomov if (req->r_attempts) 1567bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 1568bb873b53SIlya Dryomov else 1569bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 1570bb873b53SIlya Dryomov 1571bb873b53SIlya Dryomov encode_request(req, req->r_request); 1572bb873b53SIlya Dryomov 1573bb873b53SIlya Dryomov dout("%s req %p tid %llu to pg %llu.%x osd%d flags 0x%x attempt %d\n", 1574bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 1575bb873b53SIlya Dryomov req->r_t.osd, req->r_flags, req->r_attempts); 1576bb873b53SIlya Dryomov 1577bb873b53SIlya Dryomov req->r_t.paused = false; 15783d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1579bb873b53SIlya Dryomov req->r_attempts++; 15803d14c5d2SYehuda Sadeh 1581bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 1582bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 1583bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 15843d14c5d2SYehuda Sadeh } 15853d14c5d2SYehuda Sadeh 158642c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 158742c1b124SIlya Dryomov { 158842c1b124SIlya Dryomov bool continuous = false; 158942c1b124SIlya Dryomov 15905aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 159142c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 159242c1b124SIlya Dryomov 159342c1b124SIlya Dryomov if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 159442c1b124SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || 159542c1b124SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) { 159642c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 159742c1b124SIlya Dryomov continuous = true; 159842c1b124SIlya Dryomov } else { 159942c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 160042c1b124SIlya Dryomov } 160142c1b124SIlya Dryomov 160242c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 160342c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 160442c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 160542c1b124SIlya Dryomov } 160642c1b124SIlya Dryomov 16074609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req); 16084609245eSIlya Dryomov 16095aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 16100bbfdfe8SIlya Dryomov { 16115aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 16125aea3dcdSIlya Dryomov struct ceph_osd *osd; 16134609245eSIlya Dryomov enum calc_target_result ct_res; 16145aea3dcdSIlya Dryomov bool need_send = false; 16155aea3dcdSIlya Dryomov bool promoted = false; 16160bbfdfe8SIlya Dryomov 16175aea3dcdSIlya Dryomov WARN_ON(req->r_tid || req->r_got_reply); 16185aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 16195aea3dcdSIlya Dryomov 16205aea3dcdSIlya Dryomov again: 16214609245eSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, &req->r_last_force_resend, false); 16224609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) 16234609245eSIlya Dryomov goto promote; 16244609245eSIlya Dryomov 16255aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 16265aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 16275aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 16285aea3dcdSIlya Dryomov goto promote; 16295aea3dcdSIlya Dryomov } 16305aea3dcdSIlya Dryomov 16315aea3dcdSIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 16325aea3dcdSIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) { 16335aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 16345aea3dcdSIlya Dryomov req->r_t.paused = true; 16355aea3dcdSIlya Dryomov maybe_request_map(osdc); 16365aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 16375aea3dcdSIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD)) { 16385aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 16395aea3dcdSIlya Dryomov req->r_t.paused = true; 16405aea3dcdSIlya Dryomov maybe_request_map(osdc); 16415aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 16425aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 16435aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 16445aea3dcdSIlya Dryomov (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 16455aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 16465aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 16475aea3dcdSIlya Dryomov pr_warn_ratelimited("FULL or reached pool quota\n"); 16485aea3dcdSIlya Dryomov req->r_t.paused = true; 16495aea3dcdSIlya Dryomov maybe_request_map(osdc); 16505aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 16515aea3dcdSIlya Dryomov need_send = true; 16520bbfdfe8SIlya Dryomov } else { 16535aea3dcdSIlya Dryomov maybe_request_map(osdc); 16540bbfdfe8SIlya Dryomov } 16550bbfdfe8SIlya Dryomov 16565aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 16575aea3dcdSIlya Dryomov /* 16585aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 16595aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 16605aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 16615aea3dcdSIlya Dryomov */ 16625aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 16635aea3dcdSIlya Dryomov link_request(osd, req); 16645aea3dcdSIlya Dryomov if (need_send) 16655aea3dcdSIlya Dryomov send_request(req); 16665aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 16675aea3dcdSIlya Dryomov 16684609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) 16694609245eSIlya Dryomov send_map_check(req); 16704609245eSIlya Dryomov 16715aea3dcdSIlya Dryomov if (promoted) 16725aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 16735aea3dcdSIlya Dryomov return; 16745aea3dcdSIlya Dryomov 16755aea3dcdSIlya Dryomov promote: 16765aea3dcdSIlya Dryomov up_read(&osdc->lock); 16775aea3dcdSIlya Dryomov down_write(&osdc->lock); 16785aea3dcdSIlya Dryomov wrlocked = true; 16795aea3dcdSIlya Dryomov promoted = true; 16805aea3dcdSIlya Dryomov goto again; 16810bbfdfe8SIlya Dryomov } 16820bbfdfe8SIlya Dryomov 16835aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 16845aea3dcdSIlya Dryomov { 16855aea3dcdSIlya Dryomov unsigned int mask = CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK; 16865aea3dcdSIlya Dryomov 16875aea3dcdSIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_READ) { 16885aea3dcdSIlya Dryomov WARN_ON(req->r_flags & mask); 16895aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ACK; 16905aea3dcdSIlya Dryomov } else if (req->r_flags & CEPH_OSD_FLAG_WRITE) 16915aea3dcdSIlya Dryomov WARN_ON(!(req->r_flags & mask)); 16925aea3dcdSIlya Dryomov else 16935aea3dcdSIlya Dryomov WARN_ON(1); 16945aea3dcdSIlya Dryomov 16955aea3dcdSIlya Dryomov WARN_ON(req->r_unsafe_callback && (req->r_flags & mask) != mask); 16965aea3dcdSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 16975aea3dcdSIlya Dryomov } 16985aea3dcdSIlya Dryomov 16995aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 17005aea3dcdSIlya Dryomov { 17015aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 17025aea3dcdSIlya Dryomov account_request(req); 17035aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 17045aea3dcdSIlya Dryomov } 17055aea3dcdSIlya Dryomov 17065aea3dcdSIlya Dryomov static void __finish_request(struct ceph_osd_request *req) 17075aea3dcdSIlya Dryomov { 17085aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 17095aea3dcdSIlya Dryomov struct ceph_osd *osd = req->r_osd; 17105aea3dcdSIlya Dryomov 17115aea3dcdSIlya Dryomov verify_osd_locked(osd); 17125aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 17135aea3dcdSIlya Dryomov 17144609245eSIlya Dryomov WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); 17155aea3dcdSIlya Dryomov unlink_request(osd, req); 17165aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 17175aea3dcdSIlya Dryomov 17185aea3dcdSIlya Dryomov /* 17195aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 17205aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 17215aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 17225aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 17235aea3dcdSIlya Dryomov */ 17245aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 17255aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 17265aea3dcdSIlya Dryomov } 17275aea3dcdSIlya Dryomov 17285aea3dcdSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 17295aea3dcdSIlya Dryomov { 17305aea3dcdSIlya Dryomov __finish_request(req); 17315aea3dcdSIlya Dryomov ceph_osdc_put_request(req); 17320bbfdfe8SIlya Dryomov } 17330bbfdfe8SIlya Dryomov 1734fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 1735fe5da05eSIlya Dryomov { 1736fe5da05eSIlya Dryomov if (req->r_callback) 1737fe5da05eSIlya Dryomov req->r_callback(req); 1738fe5da05eSIlya Dryomov else 1739fe5da05eSIlya Dryomov complete_all(&req->r_completion); 1740fe5da05eSIlya Dryomov } 1741fe5da05eSIlya Dryomov 17424609245eSIlya Dryomov /* 17434609245eSIlya Dryomov * Note that this is open-coded in handle_reply(), which has to deal 17444609245eSIlya Dryomov * with ack vs commit, dup acks, etc. 17454609245eSIlya Dryomov */ 17464609245eSIlya Dryomov static void complete_request(struct ceph_osd_request *req, int err) 17474609245eSIlya Dryomov { 17484609245eSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 17494609245eSIlya Dryomov 17504609245eSIlya Dryomov req->r_result = err; 17514609245eSIlya Dryomov __finish_request(req); 17524609245eSIlya Dryomov __complete_request(req); 17534609245eSIlya Dryomov complete_all(&req->r_safe_completion); 17544609245eSIlya Dryomov ceph_osdc_put_request(req); 17554609245eSIlya Dryomov } 17564609245eSIlya Dryomov 17574609245eSIlya Dryomov static void cancel_map_check(struct ceph_osd_request *req) 17584609245eSIlya Dryomov { 17594609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 17604609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 17614609245eSIlya Dryomov 17624609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 17634609245eSIlya Dryomov 17644609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 17654609245eSIlya Dryomov if (!lookup_req) 17664609245eSIlya Dryomov return; 17674609245eSIlya Dryomov 17684609245eSIlya Dryomov WARN_ON(lookup_req != req); 17694609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 17704609245eSIlya Dryomov ceph_osdc_put_request(req); 17714609245eSIlya Dryomov } 17724609245eSIlya Dryomov 17735aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 17745aea3dcdSIlya Dryomov { 17755aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 17765aea3dcdSIlya Dryomov 17774609245eSIlya Dryomov cancel_map_check(req); 17785aea3dcdSIlya Dryomov finish_request(req); 17795aea3dcdSIlya Dryomov } 17805aea3dcdSIlya Dryomov 17814609245eSIlya Dryomov static void check_pool_dne(struct ceph_osd_request *req) 17824609245eSIlya Dryomov { 17834609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 17844609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 17854609245eSIlya Dryomov 17864609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 17874609245eSIlya Dryomov WARN_ON(!map->epoch); 17884609245eSIlya Dryomov 17894609245eSIlya Dryomov if (req->r_attempts) { 17904609245eSIlya Dryomov /* 17914609245eSIlya Dryomov * We sent a request earlier, which means that 17924609245eSIlya Dryomov * previously the pool existed, and now it does not 17934609245eSIlya Dryomov * (i.e., it was deleted). 17944609245eSIlya Dryomov */ 17954609245eSIlya Dryomov req->r_map_dne_bound = map->epoch; 17964609245eSIlya Dryomov dout("%s req %p tid %llu pool disappeared\n", __func__, req, 17974609245eSIlya Dryomov req->r_tid); 17984609245eSIlya Dryomov } else { 17994609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, 18004609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, map->epoch); 18014609245eSIlya Dryomov } 18024609245eSIlya Dryomov 18034609245eSIlya Dryomov if (req->r_map_dne_bound) { 18044609245eSIlya Dryomov if (map->epoch >= req->r_map_dne_bound) { 18054609245eSIlya Dryomov /* we had a new enough map */ 18064609245eSIlya Dryomov pr_info_ratelimited("tid %llu pool does not exist\n", 18074609245eSIlya Dryomov req->r_tid); 18084609245eSIlya Dryomov complete_request(req, -ENOENT); 18094609245eSIlya Dryomov } 18104609245eSIlya Dryomov } else { 18114609245eSIlya Dryomov send_map_check(req); 18124609245eSIlya Dryomov } 18134609245eSIlya Dryomov } 18144609245eSIlya Dryomov 18154609245eSIlya Dryomov static void map_check_cb(struct ceph_mon_generic_request *greq) 18164609245eSIlya Dryomov { 18174609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 18184609245eSIlya Dryomov struct ceph_osd_request *req; 18194609245eSIlya Dryomov u64 tid = greq->private_data; 18204609245eSIlya Dryomov 18214609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 18224609245eSIlya Dryomov 18234609245eSIlya Dryomov down_write(&osdc->lock); 18244609245eSIlya Dryomov req = lookup_request_mc(&osdc->map_checks, tid); 18254609245eSIlya Dryomov if (!req) { 18264609245eSIlya Dryomov dout("%s tid %llu dne\n", __func__, tid); 18274609245eSIlya Dryomov goto out_unlock; 18284609245eSIlya Dryomov } 18294609245eSIlya Dryomov 18304609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, 18314609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, greq->u.newest); 18324609245eSIlya Dryomov if (!req->r_map_dne_bound) 18334609245eSIlya Dryomov req->r_map_dne_bound = greq->u.newest; 18344609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 18354609245eSIlya Dryomov check_pool_dne(req); 18364609245eSIlya Dryomov 18374609245eSIlya Dryomov ceph_osdc_put_request(req); 18384609245eSIlya Dryomov out_unlock: 18394609245eSIlya Dryomov up_write(&osdc->lock); 18404609245eSIlya Dryomov } 18414609245eSIlya Dryomov 18424609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req) 18434609245eSIlya Dryomov { 18444609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 18454609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 18464609245eSIlya Dryomov int ret; 18474609245eSIlya Dryomov 18484609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 18494609245eSIlya Dryomov 18504609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 18514609245eSIlya Dryomov if (lookup_req) { 18524609245eSIlya Dryomov WARN_ON(lookup_req != req); 18534609245eSIlya Dryomov return; 18544609245eSIlya Dryomov } 18554609245eSIlya Dryomov 18564609245eSIlya Dryomov ceph_osdc_get_request(req); 18574609245eSIlya Dryomov insert_request_mc(&osdc->map_checks, req); 18584609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 18594609245eSIlya Dryomov map_check_cb, req->r_tid); 18604609245eSIlya Dryomov WARN_ON(ret); 18614609245eSIlya Dryomov } 18624609245eSIlya Dryomov 18630bbfdfe8SIlya Dryomov /* 1864922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 1865922dab61SIlya Dryomov */ 1866922dab61SIlya Dryomov static void linger_release(struct kref *kref) 1867922dab61SIlya Dryomov { 1868922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1869922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 1870922dab61SIlya Dryomov 1871922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 1872922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 1873922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 1874922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 18754609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); 1876922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 1877b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lreq->pending_lworks)); 1878922dab61SIlya Dryomov WARN_ON(lreq->osd); 1879922dab61SIlya Dryomov 1880922dab61SIlya Dryomov if (lreq->reg_req) 1881922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 1882922dab61SIlya Dryomov if (lreq->ping_req) 1883922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 1884922dab61SIlya Dryomov target_destroy(&lreq->t); 1885922dab61SIlya Dryomov kfree(lreq); 1886922dab61SIlya Dryomov } 1887922dab61SIlya Dryomov 1888922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 1889922dab61SIlya Dryomov { 1890922dab61SIlya Dryomov if (lreq) 1891922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 1892922dab61SIlya Dryomov } 1893922dab61SIlya Dryomov 1894922dab61SIlya Dryomov static struct ceph_osd_linger_request * 1895922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 1896922dab61SIlya Dryomov { 1897922dab61SIlya Dryomov kref_get(&lreq->kref); 1898922dab61SIlya Dryomov return lreq; 1899922dab61SIlya Dryomov } 1900922dab61SIlya Dryomov 1901922dab61SIlya Dryomov static struct ceph_osd_linger_request * 1902922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 1903922dab61SIlya Dryomov { 1904922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 1905922dab61SIlya Dryomov 1906922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 1907922dab61SIlya Dryomov if (!lreq) 1908922dab61SIlya Dryomov return NULL; 1909922dab61SIlya Dryomov 1910922dab61SIlya Dryomov kref_init(&lreq->kref); 1911922dab61SIlya Dryomov mutex_init(&lreq->lock); 1912922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 1913922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 19144609245eSIlya Dryomov RB_CLEAR_NODE(&lreq->mc_node); 1915922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 1916b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lreq->pending_lworks); 1917922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 191819079203SIlya Dryomov init_completion(&lreq->notify_finish_wait); 1919922dab61SIlya Dryomov 1920922dab61SIlya Dryomov lreq->osdc = osdc; 1921922dab61SIlya Dryomov target_init(&lreq->t); 1922922dab61SIlya Dryomov 1923922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 1924922dab61SIlya Dryomov return lreq; 1925922dab61SIlya Dryomov } 1926922dab61SIlya Dryomov 1927922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 1928922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 19294609245eSIlya Dryomov DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) 1930922dab61SIlya Dryomov 1931922dab61SIlya Dryomov /* 1932922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 1933922dab61SIlya Dryomov * 1934922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 1935922dab61SIlya Dryomov */ 1936922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 1937922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 1938922dab61SIlya Dryomov { 1939922dab61SIlya Dryomov verify_osd_locked(osd); 1940922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 1941922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 1942922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 1943922dab61SIlya Dryomov 1944922dab61SIlya Dryomov if (!osd_homeless(osd)) 1945922dab61SIlya Dryomov __remove_osd_from_lru(osd); 1946922dab61SIlya Dryomov else 1947922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 1948922dab61SIlya Dryomov 1949922dab61SIlya Dryomov get_osd(osd); 1950922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 1951922dab61SIlya Dryomov lreq->osd = osd; 1952922dab61SIlya Dryomov } 1953922dab61SIlya Dryomov 1954922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 1955922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 1956922dab61SIlya Dryomov { 1957922dab61SIlya Dryomov verify_osd_locked(osd); 1958922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 1959922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 1960922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 1961922dab61SIlya Dryomov 1962922dab61SIlya Dryomov lreq->osd = NULL; 1963922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 1964922dab61SIlya Dryomov put_osd(osd); 1965922dab61SIlya Dryomov 1966922dab61SIlya Dryomov if (!osd_homeless(osd)) 1967922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 1968922dab61SIlya Dryomov else 1969922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 1970922dab61SIlya Dryomov } 1971922dab61SIlya Dryomov 1972922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 1973922dab61SIlya Dryomov { 1974922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 1975922dab61SIlya Dryomov 1976922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 1977922dab61SIlya Dryomov } 1978922dab61SIlya Dryomov 1979922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 1980922dab61SIlya Dryomov { 1981922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 1982922dab61SIlya Dryomov bool registered; 1983922dab61SIlya Dryomov 1984922dab61SIlya Dryomov down_read(&osdc->lock); 1985922dab61SIlya Dryomov registered = __linger_registered(lreq); 1986922dab61SIlya Dryomov up_read(&osdc->lock); 1987922dab61SIlya Dryomov 1988922dab61SIlya Dryomov return registered; 1989922dab61SIlya Dryomov } 1990922dab61SIlya Dryomov 1991922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 1992922dab61SIlya Dryomov { 1993922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 1994922dab61SIlya Dryomov 1995922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 1996922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 1997922dab61SIlya Dryomov 1998922dab61SIlya Dryomov linger_get(lreq); 1999922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 2000922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 2001922dab61SIlya Dryomov } 2002922dab61SIlya Dryomov 2003922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 2004922dab61SIlya Dryomov { 2005922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2006922dab61SIlya Dryomov 2007922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2008922dab61SIlya Dryomov 2009922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 2010922dab61SIlya Dryomov linger_put(lreq); 2011922dab61SIlya Dryomov } 2012922dab61SIlya Dryomov 2013922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 2014922dab61SIlya Dryomov { 2015922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2016922dab61SIlya Dryomov 2017922dab61SIlya Dryomov WARN_ON(!req->r_linger); 2018922dab61SIlya Dryomov cancel_request(req); 2019922dab61SIlya Dryomov linger_put(lreq); 2020922dab61SIlya Dryomov } 2021922dab61SIlya Dryomov 2022922dab61SIlya Dryomov struct linger_work { 2023922dab61SIlya Dryomov struct work_struct work; 2024922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2025b07d3c4bSIlya Dryomov struct list_head pending_item; 2026b07d3c4bSIlya Dryomov unsigned long queued_stamp; 2027922dab61SIlya Dryomov 2028922dab61SIlya Dryomov union { 2029922dab61SIlya Dryomov struct { 2030922dab61SIlya Dryomov u64 notify_id; 2031922dab61SIlya Dryomov u64 notifier_id; 2032922dab61SIlya Dryomov void *payload; /* points into @msg front */ 2033922dab61SIlya Dryomov size_t payload_len; 2034922dab61SIlya Dryomov 2035922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 2036922dab61SIlya Dryomov } notify; 2037922dab61SIlya Dryomov struct { 2038922dab61SIlya Dryomov int err; 2039922dab61SIlya Dryomov } error; 2040922dab61SIlya Dryomov }; 2041922dab61SIlya Dryomov }; 2042922dab61SIlya Dryomov 2043922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 2044922dab61SIlya Dryomov work_func_t workfn) 2045922dab61SIlya Dryomov { 2046922dab61SIlya Dryomov struct linger_work *lwork; 2047922dab61SIlya Dryomov 2048922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 2049922dab61SIlya Dryomov if (!lwork) 2050922dab61SIlya Dryomov return NULL; 2051922dab61SIlya Dryomov 2052922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 2053b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lwork->pending_item); 2054922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 2055922dab61SIlya Dryomov 2056922dab61SIlya Dryomov return lwork; 2057922dab61SIlya Dryomov } 2058922dab61SIlya Dryomov 2059922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 2060922dab61SIlya Dryomov { 2061922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2062922dab61SIlya Dryomov 2063b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 2064b07d3c4bSIlya Dryomov list_del(&lwork->pending_item); 2065b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 2066b07d3c4bSIlya Dryomov 2067922dab61SIlya Dryomov linger_put(lreq); 2068922dab61SIlya Dryomov kfree(lwork); 2069922dab61SIlya Dryomov } 2070922dab61SIlya Dryomov 2071922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 2072922dab61SIlya Dryomov { 2073922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2074922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2075922dab61SIlya Dryomov 2076922dab61SIlya Dryomov verify_lreq_locked(lreq); 2077b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lwork->pending_item)); 2078b07d3c4bSIlya Dryomov 2079b07d3c4bSIlya Dryomov lwork->queued_stamp = jiffies; 2080b07d3c4bSIlya Dryomov list_add_tail(&lwork->pending_item, &lreq->pending_lworks); 2081922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 2082922dab61SIlya Dryomov } 2083922dab61SIlya Dryomov 2084922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 2085922dab61SIlya Dryomov { 2086922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2087922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2088922dab61SIlya Dryomov 2089922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2090922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2091922dab61SIlya Dryomov goto out; 2092922dab61SIlya Dryomov } 2093922dab61SIlya Dryomov 209419079203SIlya Dryomov WARN_ON(!lreq->is_watch); 2095922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 2096922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 2097922dab61SIlya Dryomov lwork->notify.payload_len); 2098922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 2099922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 2100922dab61SIlya Dryomov lwork->notify.payload_len); 2101922dab61SIlya Dryomov 2102922dab61SIlya Dryomov out: 2103922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 2104922dab61SIlya Dryomov lwork_free(lwork); 2105922dab61SIlya Dryomov } 2106922dab61SIlya Dryomov 2107922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 2108922dab61SIlya Dryomov { 2109922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2110922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2111922dab61SIlya Dryomov 2112922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2113922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2114922dab61SIlya Dryomov goto out; 2115922dab61SIlya Dryomov } 2116922dab61SIlya Dryomov 2117922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 2118922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 2119922dab61SIlya Dryomov 2120922dab61SIlya Dryomov out: 2121922dab61SIlya Dryomov lwork_free(lwork); 2122922dab61SIlya Dryomov } 2123922dab61SIlya Dryomov 2124922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 2125922dab61SIlya Dryomov { 2126922dab61SIlya Dryomov struct linger_work *lwork; 2127922dab61SIlya Dryomov 2128922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 2129922dab61SIlya Dryomov if (!lwork) { 2130922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 2131922dab61SIlya Dryomov return; 2132922dab61SIlya Dryomov } 2133922dab61SIlya Dryomov 2134922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 2135922dab61SIlya Dryomov lwork_queue(lwork); 2136922dab61SIlya Dryomov } 2137922dab61SIlya Dryomov 2138922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 2139922dab61SIlya Dryomov int result) 2140922dab61SIlya Dryomov { 2141922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 2142922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 2143922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 2144922dab61SIlya Dryomov } 2145922dab61SIlya Dryomov } 2146922dab61SIlya Dryomov 2147922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 2148922dab61SIlya Dryomov { 2149922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2150922dab61SIlya Dryomov 2151922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2152922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 2153922dab61SIlya Dryomov lreq->linger_id, req->r_result); 2154922dab61SIlya Dryomov WARN_ON(!__linger_registered(lreq)); 2155922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 2156922dab61SIlya Dryomov lreq->committed = true; 2157922dab61SIlya Dryomov 215819079203SIlya Dryomov if (!lreq->is_watch) { 215919079203SIlya Dryomov struct ceph_osd_data *osd_data = 216019079203SIlya Dryomov osd_req_op_data(req, 0, notify, response_data); 216119079203SIlya Dryomov void *p = page_address(osd_data->pages[0]); 216219079203SIlya Dryomov 216319079203SIlya Dryomov WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || 216419079203SIlya Dryomov osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); 216519079203SIlya Dryomov 216619079203SIlya Dryomov /* make note of the notify_id */ 216719079203SIlya Dryomov if (req->r_ops[0].outdata_len >= sizeof(u64)) { 216819079203SIlya Dryomov lreq->notify_id = ceph_decode_64(&p); 216919079203SIlya Dryomov dout("lreq %p notify_id %llu\n", lreq, 217019079203SIlya Dryomov lreq->notify_id); 217119079203SIlya Dryomov } else { 217219079203SIlya Dryomov dout("lreq %p no notify_id\n", lreq); 217319079203SIlya Dryomov } 217419079203SIlya Dryomov } 217519079203SIlya Dryomov 2176922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2177922dab61SIlya Dryomov linger_put(lreq); 2178922dab61SIlya Dryomov } 2179922dab61SIlya Dryomov 2180922dab61SIlya Dryomov static int normalize_watch_error(int err) 2181922dab61SIlya Dryomov { 2182922dab61SIlya Dryomov /* 2183922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 2184922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 2185922dab61SIlya Dryomov * the delete appear the same to the user. 2186922dab61SIlya Dryomov */ 2187922dab61SIlya Dryomov if (err == -ENOENT) 2188922dab61SIlya Dryomov err = -ENOTCONN; 2189922dab61SIlya Dryomov 2190922dab61SIlya Dryomov return err; 2191922dab61SIlya Dryomov } 2192922dab61SIlya Dryomov 2193922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 2194922dab61SIlya Dryomov { 2195922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2196922dab61SIlya Dryomov 2197922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2198922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 2199922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 2200922dab61SIlya Dryomov if (req->r_result < 0) { 2201922dab61SIlya Dryomov if (!lreq->last_error) { 2202922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2203922dab61SIlya Dryomov queue_watch_error(lreq); 2204922dab61SIlya Dryomov } 2205922dab61SIlya Dryomov } 2206922dab61SIlya Dryomov 2207922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2208922dab61SIlya Dryomov linger_put(lreq); 2209922dab61SIlya Dryomov } 2210922dab61SIlya Dryomov 2211922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 2212922dab61SIlya Dryomov { 2213922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->reg_req; 2214922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2215922dab61SIlya Dryomov 2216922dab61SIlya Dryomov verify_osdc_wrlocked(req->r_osdc); 2217922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2218922dab61SIlya Dryomov 2219922dab61SIlya Dryomov if (req->r_osd) 2220922dab61SIlya Dryomov cancel_linger_request(req); 2221922dab61SIlya Dryomov 2222922dab61SIlya Dryomov request_reinit(req); 2223922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 2224922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 2225922dab61SIlya Dryomov req->r_flags = lreq->t.flags; 2226922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 2227922dab61SIlya Dryomov 2228922dab61SIlya Dryomov mutex_lock(&lreq->lock); 222919079203SIlya Dryomov if (lreq->is_watch && lreq->committed) { 2230922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2231922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id); 2232922dab61SIlya Dryomov op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; 2233922dab61SIlya Dryomov op->watch.gen = ++lreq->register_gen; 2234922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 2235922dab61SIlya Dryomov op->watch.gen); 2236922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 2237922dab61SIlya Dryomov } else { 223819079203SIlya Dryomov if (!lreq->is_watch) 223919079203SIlya Dryomov lreq->notify_id = 0; 224019079203SIlya Dryomov else 2241922dab61SIlya Dryomov WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); 2242922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 2243922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 2244922dab61SIlya Dryomov } 2245922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2246922dab61SIlya Dryomov 2247922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2248922dab61SIlya Dryomov req->r_linger = true; 2249922dab61SIlya Dryomov 2250922dab61SIlya Dryomov submit_request(req, true); 2251922dab61SIlya Dryomov } 2252922dab61SIlya Dryomov 2253922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 2254922dab61SIlya Dryomov { 2255922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2256922dab61SIlya Dryomov 2257922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2258922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 2259922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 2260922dab61SIlya Dryomov lreq->last_error); 2261922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 2262b07d3c4bSIlya Dryomov if (!req->r_result) { 2263b07d3c4bSIlya Dryomov lreq->watch_valid_thru = lreq->ping_sent; 2264b07d3c4bSIlya Dryomov } else if (!lreq->last_error) { 2265922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2266922dab61SIlya Dryomov queue_watch_error(lreq); 2267922dab61SIlya Dryomov } 2268922dab61SIlya Dryomov } else { 2269922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 2270922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 2271922dab61SIlya Dryomov } 2272922dab61SIlya Dryomov 2273922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2274922dab61SIlya Dryomov linger_put(lreq); 2275922dab61SIlya Dryomov } 2276922dab61SIlya Dryomov 2277922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 2278922dab61SIlya Dryomov { 2279922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2280922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->ping_req; 2281922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2282922dab61SIlya Dryomov 2283922dab61SIlya Dryomov if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD)) { 2284922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 2285922dab61SIlya Dryomov return; 2286922dab61SIlya Dryomov } 2287922dab61SIlya Dryomov 2288922dab61SIlya Dryomov lreq->ping_sent = jiffies; 2289922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 2290922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 2291922dab61SIlya Dryomov lreq->register_gen); 2292922dab61SIlya Dryomov 2293922dab61SIlya Dryomov if (req->r_osd) 2294922dab61SIlya Dryomov cancel_linger_request(req); 2295922dab61SIlya Dryomov 2296922dab61SIlya Dryomov request_reinit(req); 2297922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 2298922dab61SIlya Dryomov 2299922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2300922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id || 2301922dab61SIlya Dryomov op->watch.op != CEPH_OSD_WATCH_OP_PING); 2302922dab61SIlya Dryomov op->watch.gen = lreq->register_gen; 2303922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 2304922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2305922dab61SIlya Dryomov req->r_linger = true; 2306922dab61SIlya Dryomov 2307922dab61SIlya Dryomov ceph_osdc_get_request(req); 2308922dab61SIlya Dryomov account_request(req); 2309922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 2310922dab61SIlya Dryomov link_request(lreq->osd, req); 2311922dab61SIlya Dryomov send_request(req); 2312922dab61SIlya Dryomov } 2313922dab61SIlya Dryomov 2314922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 2315922dab61SIlya Dryomov { 2316922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2317922dab61SIlya Dryomov struct ceph_osd *osd; 2318922dab61SIlya Dryomov 2319922dab61SIlya Dryomov calc_target(osdc, &lreq->t, &lreq->last_force_resend, false); 2320922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 2321922dab61SIlya Dryomov link_linger(osd, lreq); 2322922dab61SIlya Dryomov 2323922dab61SIlya Dryomov send_linger(lreq); 2324922dab61SIlya Dryomov } 2325922dab61SIlya Dryomov 23264609245eSIlya Dryomov static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) 23274609245eSIlya Dryomov { 23284609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 23294609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 23304609245eSIlya Dryomov 23314609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 23324609245eSIlya Dryomov 23334609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 23344609245eSIlya Dryomov lreq->linger_id); 23354609245eSIlya Dryomov if (!lookup_lreq) 23364609245eSIlya Dryomov return; 23374609245eSIlya Dryomov 23384609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 23394609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 23404609245eSIlya Dryomov linger_put(lreq); 23414609245eSIlya Dryomov } 23424609245eSIlya Dryomov 2343922dab61SIlya Dryomov /* 2344922dab61SIlya Dryomov * @lreq has to be both registered and linked. 2345922dab61SIlya Dryomov */ 2346922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 2347922dab61SIlya Dryomov { 234819079203SIlya Dryomov if (lreq->is_watch && lreq->ping_req->r_osd) 2349922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 2350922dab61SIlya Dryomov if (lreq->reg_req->r_osd) 2351922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 23524609245eSIlya Dryomov cancel_linger_map_check(lreq); 2353922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 2354922dab61SIlya Dryomov linger_unregister(lreq); 2355922dab61SIlya Dryomov } 2356922dab61SIlya Dryomov 2357922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 2358922dab61SIlya Dryomov { 2359922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2360922dab61SIlya Dryomov 2361922dab61SIlya Dryomov down_write(&osdc->lock); 2362922dab61SIlya Dryomov if (__linger_registered(lreq)) 2363922dab61SIlya Dryomov __linger_cancel(lreq); 2364922dab61SIlya Dryomov up_write(&osdc->lock); 2365922dab61SIlya Dryomov } 2366922dab61SIlya Dryomov 23674609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq); 23684609245eSIlya Dryomov 23694609245eSIlya Dryomov static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) 23704609245eSIlya Dryomov { 23714609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 23724609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 23734609245eSIlya Dryomov 23744609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 23754609245eSIlya Dryomov WARN_ON(!map->epoch); 23764609245eSIlya Dryomov 23774609245eSIlya Dryomov if (lreq->register_gen) { 23784609245eSIlya Dryomov lreq->map_dne_bound = map->epoch; 23794609245eSIlya Dryomov dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, 23804609245eSIlya Dryomov lreq, lreq->linger_id); 23814609245eSIlya Dryomov } else { 23824609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", 23834609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 23844609245eSIlya Dryomov map->epoch); 23854609245eSIlya Dryomov } 23864609245eSIlya Dryomov 23874609245eSIlya Dryomov if (lreq->map_dne_bound) { 23884609245eSIlya Dryomov if (map->epoch >= lreq->map_dne_bound) { 23894609245eSIlya Dryomov /* we had a new enough map */ 23904609245eSIlya Dryomov pr_info("linger_id %llu pool does not exist\n", 23914609245eSIlya Dryomov lreq->linger_id); 23924609245eSIlya Dryomov linger_reg_commit_complete(lreq, -ENOENT); 23934609245eSIlya Dryomov __linger_cancel(lreq); 23944609245eSIlya Dryomov } 23954609245eSIlya Dryomov } else { 23964609245eSIlya Dryomov send_linger_map_check(lreq); 23974609245eSIlya Dryomov } 23984609245eSIlya Dryomov } 23994609245eSIlya Dryomov 24004609245eSIlya Dryomov static void linger_map_check_cb(struct ceph_mon_generic_request *greq) 24014609245eSIlya Dryomov { 24024609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 24034609245eSIlya Dryomov struct ceph_osd_linger_request *lreq; 24044609245eSIlya Dryomov u64 linger_id = greq->private_data; 24054609245eSIlya Dryomov 24064609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 24074609245eSIlya Dryomov 24084609245eSIlya Dryomov down_write(&osdc->lock); 24094609245eSIlya Dryomov lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); 24104609245eSIlya Dryomov if (!lreq) { 24114609245eSIlya Dryomov dout("%s linger_id %llu dne\n", __func__, linger_id); 24124609245eSIlya Dryomov goto out_unlock; 24134609245eSIlya Dryomov } 24144609245eSIlya Dryomov 24154609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", 24164609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 24174609245eSIlya Dryomov greq->u.newest); 24184609245eSIlya Dryomov if (!lreq->map_dne_bound) 24194609245eSIlya Dryomov lreq->map_dne_bound = greq->u.newest; 24204609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 24214609245eSIlya Dryomov check_linger_pool_dne(lreq); 24224609245eSIlya Dryomov 24234609245eSIlya Dryomov linger_put(lreq); 24244609245eSIlya Dryomov out_unlock: 24254609245eSIlya Dryomov up_write(&osdc->lock); 24264609245eSIlya Dryomov } 24274609245eSIlya Dryomov 24284609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq) 24294609245eSIlya Dryomov { 24304609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 24314609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 24324609245eSIlya Dryomov int ret; 24334609245eSIlya Dryomov 24344609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 24354609245eSIlya Dryomov 24364609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 24374609245eSIlya Dryomov lreq->linger_id); 24384609245eSIlya Dryomov if (lookup_lreq) { 24394609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 24404609245eSIlya Dryomov return; 24414609245eSIlya Dryomov } 24424609245eSIlya Dryomov 24434609245eSIlya Dryomov linger_get(lreq); 24444609245eSIlya Dryomov insert_linger_mc(&osdc->linger_map_checks, lreq); 24454609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 24464609245eSIlya Dryomov linger_map_check_cb, lreq->linger_id); 24474609245eSIlya Dryomov WARN_ON(ret); 24484609245eSIlya Dryomov } 24494609245eSIlya Dryomov 2450922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 2451922dab61SIlya Dryomov { 2452922dab61SIlya Dryomov int ret; 2453922dab61SIlya Dryomov 2454922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2455922dab61SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); 2456922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 2457922dab61SIlya Dryomov } 2458922dab61SIlya Dryomov 245919079203SIlya Dryomov static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) 246019079203SIlya Dryomov { 246119079203SIlya Dryomov int ret; 246219079203SIlya Dryomov 246319079203SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 246419079203SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); 246519079203SIlya Dryomov return ret ?: lreq->notify_finish_error; 246619079203SIlya Dryomov } 246719079203SIlya Dryomov 2468922dab61SIlya Dryomov /* 2469fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 2470fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 2471fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 2472fbca9635SIlya Dryomov * reset is detected. 24733d14c5d2SYehuda Sadeh */ 24743d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 24753d14c5d2SYehuda Sadeh { 24763d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 24773d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 2478a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 24795aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 24805aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 24815aea3dcdSIlya Dryomov struct rb_node *n, *p; 24823d14c5d2SYehuda Sadeh 24835aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 24845aea3dcdSIlya Dryomov down_write(&osdc->lock); 24853d14c5d2SYehuda Sadeh 24863d14c5d2SYehuda Sadeh /* 24873d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 24883d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 24893d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 24903d14c5d2SYehuda Sadeh */ 24915aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 24925aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 24935aea3dcdSIlya Dryomov bool found = false; 24943d14c5d2SYehuda Sadeh 24955aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 24965aea3dcdSIlya Dryomov struct ceph_osd_request *req = 24975aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 24985aea3dcdSIlya Dryomov 24995aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 25005aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 25015aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 25025aea3dcdSIlya Dryomov found = true; 25035aea3dcdSIlya Dryomov } 25045aea3dcdSIlya Dryomov } 2505922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 2506922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2507922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 2508922dab61SIlya Dryomov 2509922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 2510922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 2511922dab61SIlya Dryomov found = true; 2512922dab61SIlya Dryomov 2513922dab61SIlya Dryomov mutex_lock(&lreq->lock); 251419079203SIlya Dryomov if (lreq->is_watch && lreq->committed && !lreq->last_error) 2515922dab61SIlya Dryomov send_linger_ping(lreq); 2516922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2517922dab61SIlya Dryomov } 25185aea3dcdSIlya Dryomov 25195aea3dcdSIlya Dryomov if (found) 25203d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 25213d14c5d2SYehuda Sadeh } 25225aea3dcdSIlya Dryomov 25235aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 25245aea3dcdSIlya Dryomov maybe_request_map(osdc); 25255aea3dcdSIlya Dryomov 25263d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 25275aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 25285aea3dcdSIlya Dryomov struct ceph_osd, 25293d14c5d2SYehuda Sadeh o_keepalive_item); 25303d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 25313d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 25323d14c5d2SYehuda Sadeh } 25333d14c5d2SYehuda Sadeh 25345aea3dcdSIlya Dryomov up_write(&osdc->lock); 2535fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 2536fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 25373d14c5d2SYehuda Sadeh } 25383d14c5d2SYehuda Sadeh 25393d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 25403d14c5d2SYehuda Sadeh { 25413d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 25423d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 25433d14c5d2SYehuda Sadeh osds_timeout_work.work); 2544a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 254542a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 25463d14c5d2SYehuda Sadeh 254742a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 25485aea3dcdSIlya Dryomov down_write(&osdc->lock); 254942a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 255042a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 255142a2c09fSIlya Dryomov break; 255242a2c09fSIlya Dryomov 25535aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 2554922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 25555aea3dcdSIlya Dryomov close_osd(osd); 255642a2c09fSIlya Dryomov } 255742a2c09fSIlya Dryomov 25585aea3dcdSIlya Dryomov up_write(&osdc->lock); 25593d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 25603d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 25613d14c5d2SYehuda Sadeh } 25623d14c5d2SYehuda Sadeh 2563205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 2564205ee118SIlya Dryomov struct ceph_object_locator *oloc) 2565205ee118SIlya Dryomov { 2566205ee118SIlya Dryomov u8 struct_v, struct_cv; 2567205ee118SIlya Dryomov u32 len; 2568205ee118SIlya Dryomov void *struct_end; 2569205ee118SIlya Dryomov int ret = 0; 2570205ee118SIlya Dryomov 2571205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 2572205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 2573205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 2574205ee118SIlya Dryomov if (struct_v < 3) { 2575205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 2576205ee118SIlya Dryomov struct_v, struct_cv); 2577205ee118SIlya Dryomov goto e_inval; 2578205ee118SIlya Dryomov } 2579205ee118SIlya Dryomov if (struct_cv > 6) { 2580205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 2581205ee118SIlya Dryomov struct_v, struct_cv); 2582205ee118SIlya Dryomov goto e_inval; 2583205ee118SIlya Dryomov } 2584205ee118SIlya Dryomov len = ceph_decode_32(p); 2585205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 2586205ee118SIlya Dryomov struct_end = *p + len; 2587205ee118SIlya Dryomov 2588205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 2589205ee118SIlya Dryomov *p += 4; /* skip preferred */ 2590205ee118SIlya Dryomov 2591205ee118SIlya Dryomov len = ceph_decode_32(p); 2592205ee118SIlya Dryomov if (len > 0) { 2593205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 2594205ee118SIlya Dryomov goto e_inval; 2595205ee118SIlya Dryomov } 2596205ee118SIlya Dryomov 2597205ee118SIlya Dryomov if (struct_v >= 5) { 2598205ee118SIlya Dryomov len = ceph_decode_32(p); 2599205ee118SIlya Dryomov if (len > 0) { 2600205ee118SIlya Dryomov pr_warn("ceph_object_locator::nspace is set\n"); 2601205ee118SIlya Dryomov goto e_inval; 2602205ee118SIlya Dryomov } 2603205ee118SIlya Dryomov } 2604205ee118SIlya Dryomov 2605205ee118SIlya Dryomov if (struct_v >= 6) { 2606205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 2607205ee118SIlya Dryomov if (hash != -1) { 2608205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 2609205ee118SIlya Dryomov goto e_inval; 2610205ee118SIlya Dryomov } 2611205ee118SIlya Dryomov } 2612205ee118SIlya Dryomov 2613205ee118SIlya Dryomov /* skip the rest */ 2614205ee118SIlya Dryomov *p = struct_end; 2615205ee118SIlya Dryomov out: 2616205ee118SIlya Dryomov return ret; 2617205ee118SIlya Dryomov 2618205ee118SIlya Dryomov e_inval: 2619205ee118SIlya Dryomov ret = -EINVAL; 2620205ee118SIlya Dryomov goto out; 2621205ee118SIlya Dryomov } 2622205ee118SIlya Dryomov 2623205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 2624205ee118SIlya Dryomov struct ceph_request_redirect *redir) 2625205ee118SIlya Dryomov { 2626205ee118SIlya Dryomov u8 struct_v, struct_cv; 2627205ee118SIlya Dryomov u32 len; 2628205ee118SIlya Dryomov void *struct_end; 2629205ee118SIlya Dryomov int ret; 2630205ee118SIlya Dryomov 2631205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 2632205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 2633205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 2634205ee118SIlya Dryomov if (struct_cv > 1) { 2635205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 2636205ee118SIlya Dryomov struct_v, struct_cv); 2637205ee118SIlya Dryomov goto e_inval; 2638205ee118SIlya Dryomov } 2639205ee118SIlya Dryomov len = ceph_decode_32(p); 2640205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 2641205ee118SIlya Dryomov struct_end = *p + len; 2642205ee118SIlya Dryomov 2643205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 2644205ee118SIlya Dryomov if (ret) 2645205ee118SIlya Dryomov goto out; 2646205ee118SIlya Dryomov 2647205ee118SIlya Dryomov len = ceph_decode_32(p); 2648205ee118SIlya Dryomov if (len > 0) { 2649205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 2650205ee118SIlya Dryomov goto e_inval; 2651205ee118SIlya Dryomov } 2652205ee118SIlya Dryomov 2653205ee118SIlya Dryomov len = ceph_decode_32(p); 2654205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 2655205ee118SIlya Dryomov 2656205ee118SIlya Dryomov /* skip the rest */ 2657205ee118SIlya Dryomov *p = struct_end; 2658205ee118SIlya Dryomov out: 2659205ee118SIlya Dryomov return ret; 2660205ee118SIlya Dryomov 2661205ee118SIlya Dryomov e_inval: 2662205ee118SIlya Dryomov ret = -EINVAL; 2663205ee118SIlya Dryomov goto out; 2664205ee118SIlya Dryomov } 2665205ee118SIlya Dryomov 2666fe5da05eSIlya Dryomov struct MOSDOpReply { 2667fe5da05eSIlya Dryomov struct ceph_pg pgid; 2668fe5da05eSIlya Dryomov u64 flags; 2669fe5da05eSIlya Dryomov int result; 2670fe5da05eSIlya Dryomov u32 epoch; 2671fe5da05eSIlya Dryomov int num_ops; 2672fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 2673fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 2674fe5da05eSIlya Dryomov int retry_attempt; 2675fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 2676fe5da05eSIlya Dryomov u64 user_version; 2677fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 2678fe5da05eSIlya Dryomov }; 267925845472SSage Weil 2680fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 26813d14c5d2SYehuda Sadeh { 2682fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 2683fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 2684fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 2685fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 2686b0b31a8fSIlya Dryomov u8 decode_redir; 2687fe5da05eSIlya Dryomov u32 len; 2688fe5da05eSIlya Dryomov int ret; 2689fe5da05eSIlya Dryomov int i; 26903d14c5d2SYehuda Sadeh 2691fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 2692fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 2693fe5da05eSIlya Dryomov p += len; /* skip oid */ 26941b83bef2SSage Weil 2695fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 2696fe5da05eSIlya Dryomov if (ret) 2697fe5da05eSIlya Dryomov return ret; 26981b83bef2SSage Weil 2699fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 2700fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 2701fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 2702fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 2703fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 2704fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 27051b83bef2SSage Weil 2706fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 2707fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 2708fe5da05eSIlya Dryomov goto e_inval; 27091b83bef2SSage Weil 2710fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 2711fe5da05eSIlya Dryomov e_inval); 2712fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 27131b83bef2SSage Weil struct ceph_osd_op *op = p; 27141b83bef2SSage Weil 2715fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 27161b83bef2SSage Weil p += sizeof(*op); 27171b83bef2SSage Weil } 2718fe5da05eSIlya Dryomov 2719fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 2720fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 2721fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 2722fe5da05eSIlya Dryomov 2723fe5da05eSIlya Dryomov if (version >= 5) { 2724fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 2725fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 2726fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 2727fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 2728fe5da05eSIlya Dryomov } else { 2729fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 2730fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 27311b83bef2SSage Weil } 27321b83bef2SSage Weil 2733fe5da05eSIlya Dryomov if (version >= 6) { 2734fe5da05eSIlya Dryomov if (version >= 7) 2735fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 2736b0b31a8fSIlya Dryomov else 2737b0b31a8fSIlya Dryomov decode_redir = 1; 2738b0b31a8fSIlya Dryomov } else { 2739b0b31a8fSIlya Dryomov decode_redir = 0; 2740b0b31a8fSIlya Dryomov } 2741b0b31a8fSIlya Dryomov 2742b0b31a8fSIlya Dryomov if (decode_redir) { 2743fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 2744fe5da05eSIlya Dryomov if (ret) 2745fe5da05eSIlya Dryomov return ret; 2746205ee118SIlya Dryomov } else { 2747fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 2748205ee118SIlya Dryomov } 2749205ee118SIlya Dryomov 2750fe5da05eSIlya Dryomov return 0; 2751205ee118SIlya Dryomov 2752fe5da05eSIlya Dryomov e_inval: 2753fe5da05eSIlya Dryomov return -EINVAL; 2754fe5da05eSIlya Dryomov } 2755fe5da05eSIlya Dryomov 2756fe5da05eSIlya Dryomov /* 2757fe5da05eSIlya Dryomov * We are done with @req if 2758fe5da05eSIlya Dryomov * - @m is a safe reply, or 2759fe5da05eSIlya Dryomov * - @m is an unsafe reply and we didn't want a safe one 2760fe5da05eSIlya Dryomov */ 2761fe5da05eSIlya Dryomov static bool done_request(const struct ceph_osd_request *req, 2762fe5da05eSIlya Dryomov const struct MOSDOpReply *m) 2763fe5da05eSIlya Dryomov { 2764fe5da05eSIlya Dryomov return (m->result < 0 || 2765fe5da05eSIlya Dryomov (m->flags & CEPH_OSD_FLAG_ONDISK) || 2766fe5da05eSIlya Dryomov !(req->r_flags & CEPH_OSD_FLAG_ONDISK)); 2767fe5da05eSIlya Dryomov } 2768fe5da05eSIlya Dryomov 2769fe5da05eSIlya Dryomov /* 2770fe5da05eSIlya Dryomov * handle osd op reply. either call the callback if it is specified, 2771fe5da05eSIlya Dryomov * or do the completion to wake up the waiting thread. 2772fe5da05eSIlya Dryomov * 2773fe5da05eSIlya Dryomov * ->r_unsafe_callback is set? yes no 2774fe5da05eSIlya Dryomov * 2775fe5da05eSIlya Dryomov * first reply is OK (needed r_cb/r_completion, r_cb/r_completion, 2776fe5da05eSIlya Dryomov * any or needed/got safe) r_safe_completion r_safe_completion 2777fe5da05eSIlya Dryomov * 2778fe5da05eSIlya Dryomov * first reply is unsafe r_unsafe_cb(true) (nothing) 2779fe5da05eSIlya Dryomov * 2780fe5da05eSIlya Dryomov * when we get the safe reply r_unsafe_cb(false), r_cb/r_completion, 2781fe5da05eSIlya Dryomov * r_safe_completion r_safe_completion 2782fe5da05eSIlya Dryomov */ 27835aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 2784fe5da05eSIlya Dryomov { 27855aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 2786fe5da05eSIlya Dryomov struct ceph_osd_request *req; 2787fe5da05eSIlya Dryomov struct MOSDOpReply m; 2788fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 2789fe5da05eSIlya Dryomov u32 data_len = 0; 2790fe5da05eSIlya Dryomov bool already_acked; 2791fe5da05eSIlya Dryomov int ret; 2792fe5da05eSIlya Dryomov int i; 2793fe5da05eSIlya Dryomov 2794fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 2795fe5da05eSIlya Dryomov 27965aea3dcdSIlya Dryomov down_read(&osdc->lock); 27975aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 27985aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 27995aea3dcdSIlya Dryomov goto out_unlock_osdc; 2800fe5da05eSIlya Dryomov } 28015aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 28025aea3dcdSIlya Dryomov 28035aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 28045aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 28055aea3dcdSIlya Dryomov if (!req) { 28065aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 28075aea3dcdSIlya Dryomov goto out_unlock_session; 28085aea3dcdSIlya Dryomov } 2809fe5da05eSIlya Dryomov 2810fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 2811fe5da05eSIlya Dryomov if (ret) { 2812fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 2813fe5da05eSIlya Dryomov req->r_tid, ret); 2814fe5da05eSIlya Dryomov ceph_msg_dump(msg); 2815fe5da05eSIlya Dryomov goto fail_request; 2816fe5da05eSIlya Dryomov } 2817fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 2818fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 2819fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 2820fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 2821fe5da05eSIlya Dryomov 2822fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 2823fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 2824fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 2825fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 2826fe5da05eSIlya Dryomov req->r_attempts - 1); 28275aea3dcdSIlya Dryomov goto out_unlock_session; 2828fe5da05eSIlya Dryomov } 2829fe5da05eSIlya Dryomov } else { 2830fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 2831fe5da05eSIlya Dryomov } 2832fe5da05eSIlya Dryomov 2833fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 2834fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 2835fe5da05eSIlya Dryomov m.redirect.oloc.pool); 28365aea3dcdSIlya Dryomov unlink_request(osd, req); 28375aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 2838205ee118SIlya Dryomov 2839fe5da05eSIlya Dryomov ceph_oloc_copy(&req->r_t.target_oloc, &m.redirect.oloc); 28405aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; 28415aea3dcdSIlya Dryomov req->r_tid = 0; 28425aea3dcdSIlya Dryomov __submit_request(req, false); 28435aea3dcdSIlya Dryomov goto out_unlock_osdc; 2844205ee118SIlya Dryomov } 2845205ee118SIlya Dryomov 2846fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 2847fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 2848fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 2849fe5da05eSIlya Dryomov goto fail_request; 2850fe5da05eSIlya Dryomov } 2851fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 2852fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 2853fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 2854fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 2855fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 2856fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 2857fe5da05eSIlya Dryomov } 2858fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 2859fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 2860fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 2861fe5da05eSIlya Dryomov goto fail_request; 2862fe5da05eSIlya Dryomov } 2863fe5da05eSIlya Dryomov dout("%s req %p tid %llu acked %d result %d data_len %u\n", __func__, 2864fe5da05eSIlya Dryomov req, req->r_tid, req->r_got_reply, m.result, data_len); 28653d14c5d2SYehuda Sadeh 2866fe5da05eSIlya Dryomov already_acked = req->r_got_reply; 2867fe5da05eSIlya Dryomov if (!already_acked) { 2868fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 2869fe5da05eSIlya Dryomov req->r_replay_version = m.replay_version; /* struct */ 2870fe5da05eSIlya Dryomov req->r_got_reply = true; 2871fe5da05eSIlya Dryomov } else if (!(m.flags & CEPH_OSD_FLAG_ONDISK)) { 2872fe5da05eSIlya Dryomov dout("req %p tid %llu dup ack\n", req, req->r_tid); 28735aea3dcdSIlya Dryomov goto out_unlock_session; 28743d14c5d2SYehuda Sadeh } 28753d14c5d2SYehuda Sadeh 2876fe5da05eSIlya Dryomov if (done_request(req, &m)) { 28775aea3dcdSIlya Dryomov __finish_request(req); 2878fe5da05eSIlya Dryomov if (req->r_linger) { 2879fe5da05eSIlya Dryomov WARN_ON(req->r_unsafe_callback); 2880922dab61SIlya Dryomov dout("req %p tid %llu cb (locked)\n", req, req->r_tid); 2881922dab61SIlya Dryomov __complete_request(req); 2882fe5da05eSIlya Dryomov } 2883fe5da05eSIlya Dryomov } 28843d14c5d2SYehuda Sadeh 28855aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 28865aea3dcdSIlya Dryomov up_read(&osdc->lock); 28873d14c5d2SYehuda Sadeh 2888fe5da05eSIlya Dryomov if (done_request(req, &m)) { 2889fe5da05eSIlya Dryomov if (already_acked && req->r_unsafe_callback) { 2890fe5da05eSIlya Dryomov dout("req %p tid %llu safe-cb\n", req, req->r_tid); 289161c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 2892922dab61SIlya Dryomov } else if (!req->r_linger) { 2893fe5da05eSIlya Dryomov dout("req %p tid %llu cb\n", req, req->r_tid); 2894fe5da05eSIlya Dryomov __complete_request(req); 289561c5d6bfSYan, Zheng } 2896fe5da05eSIlya Dryomov } else { 2897fe5da05eSIlya Dryomov if (req->r_unsafe_callback) { 2898fe5da05eSIlya Dryomov dout("req %p tid %llu unsafe-cb\n", req, req->r_tid); 2899fe5da05eSIlya Dryomov req->r_unsafe_callback(req, true); 2900fe5da05eSIlya Dryomov } else { 2901fe5da05eSIlya Dryomov WARN_ON(1); 2902fe5da05eSIlya Dryomov } 2903fe5da05eSIlya Dryomov } 2904fe5da05eSIlya Dryomov if (m.flags & CEPH_OSD_FLAG_ONDISK) 2905fe5da05eSIlya Dryomov complete_all(&req->r_safe_completion); 29063d14c5d2SYehuda Sadeh 29073d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 29083d14c5d2SYehuda Sadeh return; 2909fe5da05eSIlya Dryomov 2910fe5da05eSIlya Dryomov fail_request: 29114609245eSIlya Dryomov complete_request(req, -EIO); 29125aea3dcdSIlya Dryomov out_unlock_session: 29135aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 29145aea3dcdSIlya Dryomov out_unlock_osdc: 29155aea3dcdSIlya Dryomov up_read(&osdc->lock); 29163d14c5d2SYehuda Sadeh } 29173d14c5d2SYehuda Sadeh 291842c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 291942c1b124SIlya Dryomov { 292042c1b124SIlya Dryomov struct rb_node *n; 292142c1b124SIlya Dryomov 292242c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 292342c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 292442c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 292542c1b124SIlya Dryomov 292642c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 292742c1b124SIlya Dryomov } 292842c1b124SIlya Dryomov } 292942c1b124SIlya Dryomov 29305aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 29313d14c5d2SYehuda Sadeh { 29325aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 29333d14c5d2SYehuda Sadeh 29345aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 29355aea3dcdSIlya Dryomov if (!pi) 29365aea3dcdSIlya Dryomov return false; 29373d14c5d2SYehuda Sadeh 29385aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 29393d14c5d2SYehuda Sadeh } 29403d14c5d2SYehuda Sadeh 2941922dab61SIlya Dryomov static enum calc_target_result 2942922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 2943922dab61SIlya Dryomov { 2944922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2945922dab61SIlya Dryomov enum calc_target_result ct_res; 2946922dab61SIlya Dryomov 2947922dab61SIlya Dryomov ct_res = calc_target(osdc, &lreq->t, &lreq->last_force_resend, true); 2948922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 2949922dab61SIlya Dryomov struct ceph_osd *osd; 2950922dab61SIlya Dryomov 2951922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 2952922dab61SIlya Dryomov if (osd != lreq->osd) { 2953922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 2954922dab61SIlya Dryomov link_linger(osd, lreq); 2955922dab61SIlya Dryomov } 2956922dab61SIlya Dryomov } 2957922dab61SIlya Dryomov 2958922dab61SIlya Dryomov return ct_res; 2959922dab61SIlya Dryomov } 2960922dab61SIlya Dryomov 29613d14c5d2SYehuda Sadeh /* 29625aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 29633d14c5d2SYehuda Sadeh */ 29645aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 29655aea3dcdSIlya Dryomov bool force_resend, 29665aea3dcdSIlya Dryomov bool cleared_full, 29675aea3dcdSIlya Dryomov bool check_pool_cleared_full, 29685aea3dcdSIlya Dryomov struct rb_root *need_resend, 29695aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 29703d14c5d2SYehuda Sadeh { 29715aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 29725aea3dcdSIlya Dryomov struct rb_node *n; 29735aea3dcdSIlya Dryomov bool force_resend_writes; 29743d14c5d2SYehuda Sadeh 2975922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 2976922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2977922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 2978922dab61SIlya Dryomov enum calc_target_result ct_res; 2979922dab61SIlya Dryomov 2980922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 2981922dab61SIlya Dryomov 2982922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 2983922dab61SIlya Dryomov lreq->linger_id); 2984922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 2985922dab61SIlya Dryomov switch (ct_res) { 2986922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 2987922dab61SIlya Dryomov force_resend_writes = cleared_full || 2988922dab61SIlya Dryomov (check_pool_cleared_full && 2989922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 2990922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 2991922dab61SIlya Dryomov break; 2992922dab61SIlya Dryomov 2993922dab61SIlya Dryomov /* fall through */ 2994922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 29954609245eSIlya Dryomov cancel_linger_map_check(lreq); 2996922dab61SIlya Dryomov /* 2997922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 2998922dab61SIlya Dryomov * may have already added it to the list, since 2999922dab61SIlya Dryomov * it's not unlinked here. 3000922dab61SIlya Dryomov */ 3001922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 3002922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 3003922dab61SIlya Dryomov break; 3004922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 30054609245eSIlya Dryomov check_linger_pool_dne(lreq); 3006922dab61SIlya Dryomov break; 3007922dab61SIlya Dryomov } 3008922dab61SIlya Dryomov } 3009922dab61SIlya Dryomov 30105aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 30115aea3dcdSIlya Dryomov struct ceph_osd_request *req = 30125aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 30135aea3dcdSIlya Dryomov enum calc_target_result ct_res; 3014ab60b16dSAlex Elder 30154609245eSIlya Dryomov n = rb_next(n); /* unlink_request(), check_pool_dne() */ 3016ab60b16dSAlex Elder 30175aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 30185aea3dcdSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, 30195aea3dcdSIlya Dryomov &req->r_last_force_resend, false); 30205aea3dcdSIlya Dryomov switch (ct_res) { 30215aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 30225aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 30235aea3dcdSIlya Dryomov (check_pool_cleared_full && 30245aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 30255aea3dcdSIlya Dryomov if (!force_resend && 30265aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 30275aea3dcdSIlya Dryomov !force_resend_writes)) 30285aea3dcdSIlya Dryomov break; 3029a40c4f10SYehuda Sadeh 30305aea3dcdSIlya Dryomov /* fall through */ 30315aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 30324609245eSIlya Dryomov cancel_map_check(req); 30335aea3dcdSIlya Dryomov unlink_request(osd, req); 30345aea3dcdSIlya Dryomov insert_request(need_resend, req); 30355aea3dcdSIlya Dryomov break; 30365aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 30374609245eSIlya Dryomov check_pool_dne(req); 30385aea3dcdSIlya Dryomov break; 3039a40c4f10SYehuda Sadeh } 30403d14c5d2SYehuda Sadeh } 30413d14c5d2SYehuda Sadeh } 30426f6c7006SSage Weil 304342c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 30445aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 30455aea3dcdSIlya Dryomov struct rb_root *need_resend, 30465aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 304742c1b124SIlya Dryomov { 304842c1b124SIlya Dryomov struct ceph_osdmap *newmap; 304942c1b124SIlya Dryomov struct rb_node *n; 305042c1b124SIlya Dryomov bool skipped_map = false; 305142c1b124SIlya Dryomov bool was_full; 305242c1b124SIlya Dryomov 305342c1b124SIlya Dryomov was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 305442c1b124SIlya Dryomov set_pool_was_full(osdc); 305542c1b124SIlya Dryomov 305642c1b124SIlya Dryomov if (incremental) 305742c1b124SIlya Dryomov newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); 305842c1b124SIlya Dryomov else 305942c1b124SIlya Dryomov newmap = ceph_osdmap_decode(&p, end); 306042c1b124SIlya Dryomov if (IS_ERR(newmap)) 306142c1b124SIlya Dryomov return PTR_ERR(newmap); 306242c1b124SIlya Dryomov 306342c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 306442c1b124SIlya Dryomov /* 306542c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 306642c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 306742c1b124SIlya Dryomov * should be false. 306842c1b124SIlya Dryomov */ 306942c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 307042c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 307142c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 307242c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 307342c1b124SIlya Dryomov 307442c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 307542c1b124SIlya Dryomov if (old_pi) 307642c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 307742c1b124SIlya Dryomov else 307842c1b124SIlya Dryomov WARN_ON(pi->was_full); 307942c1b124SIlya Dryomov } 308042c1b124SIlya Dryomov 308142c1b124SIlya Dryomov if (osdc->osdmap->epoch && 308242c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 308342c1b124SIlya Dryomov WARN_ON(incremental); 308442c1b124SIlya Dryomov skipped_map = true; 308542c1b124SIlya Dryomov } 308642c1b124SIlya Dryomov 308742c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 308842c1b124SIlya Dryomov osdc->osdmap = newmap; 308942c1b124SIlya Dryomov } 309042c1b124SIlya Dryomov 309142c1b124SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 30925aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 30935aea3dcdSIlya Dryomov need_resend, need_resend_linger); 30945aea3dcdSIlya Dryomov 30955aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 30965aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 30975aea3dcdSIlya Dryomov 30985aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 30995aea3dcdSIlya Dryomov 31005aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 31015aea3dcdSIlya Dryomov need_resend_linger); 31025aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 31035aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 31045aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 31055aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 31065aea3dcdSIlya Dryomov close_osd(osd); 31075aea3dcdSIlya Dryomov } 310842c1b124SIlya Dryomov 310942c1b124SIlya Dryomov return 0; 311042c1b124SIlya Dryomov } 31116f6c7006SSage Weil 31125aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 31135aea3dcdSIlya Dryomov struct rb_root *need_resend, 31145aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 31155aea3dcdSIlya Dryomov { 3116922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 31175aea3dcdSIlya Dryomov struct rb_node *n; 31185aea3dcdSIlya Dryomov 31195aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 31205aea3dcdSIlya Dryomov struct ceph_osd_request *req = 31215aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 31225aea3dcdSIlya Dryomov struct ceph_osd *osd; 31235aea3dcdSIlya Dryomov 31245aea3dcdSIlya Dryomov n = rb_next(n); 31255aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 31265aea3dcdSIlya Dryomov 31275aea3dcdSIlya Dryomov WARN_ON(req->r_osd); 31285aea3dcdSIlya Dryomov calc_target(osdc, &req->r_t, NULL, false); 31295aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 31305aea3dcdSIlya Dryomov link_request(osd, req); 31315aea3dcdSIlya Dryomov if (!req->r_linger) { 31325aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 31335aea3dcdSIlya Dryomov send_request(req); 3134922dab61SIlya Dryomov } else { 3135922dab61SIlya Dryomov cancel_linger_request(req); 31365aea3dcdSIlya Dryomov } 31375aea3dcdSIlya Dryomov } 3138922dab61SIlya Dryomov 3139922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 3140922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 3141922dab61SIlya Dryomov send_linger(lreq); 3142922dab61SIlya Dryomov 3143922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 3144922dab61SIlya Dryomov } 31455aea3dcdSIlya Dryomov } 31465aea3dcdSIlya Dryomov 31473d14c5d2SYehuda Sadeh /* 31483d14c5d2SYehuda Sadeh * Process updated osd map. 31493d14c5d2SYehuda Sadeh * 31503d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 31513d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 31523d14c5d2SYehuda Sadeh * off to different OSDs as needed. 31533d14c5d2SYehuda Sadeh */ 31543d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 31553d14c5d2SYehuda Sadeh { 315642c1b124SIlya Dryomov void *p = msg->front.iov_base; 315742c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 31583d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 31593d14c5d2SYehuda Sadeh u32 epoch; 31603d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 31615aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 31625aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 316342c1b124SIlya Dryomov bool handled_incremental = false; 316442c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 316542c1b124SIlya Dryomov bool pauserd, pausewr; 316642c1b124SIlya Dryomov int err; 31673d14c5d2SYehuda Sadeh 316842c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 31695aea3dcdSIlya Dryomov down_write(&osdc->lock); 31703d14c5d2SYehuda Sadeh 31713d14c5d2SYehuda Sadeh /* verify fsid */ 31723d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 31733d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 31743d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 317542c1b124SIlya Dryomov goto bad; 31763d14c5d2SYehuda Sadeh 317742c1b124SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 317842c1b124SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 317942c1b124SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 318042c1b124SIlya Dryomov have_pool_full(osdc); 31819a1ea2dbSJosh Durgin 31823d14c5d2SYehuda Sadeh /* incremental maps */ 31833d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 31843d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 31853d14c5d2SYehuda Sadeh while (nr_maps > 0) { 31863d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 31873d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 31883d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 31893d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 319042c1b124SIlya Dryomov if (osdc->osdmap->epoch && 319142c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 31923d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 31933d14c5d2SYehuda Sadeh epoch, maplen); 31945aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 31955aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 319642c1b124SIlya Dryomov if (err) 31973d14c5d2SYehuda Sadeh goto bad; 319842c1b124SIlya Dryomov handled_incremental = true; 31993d14c5d2SYehuda Sadeh } else { 32003d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 32013d14c5d2SYehuda Sadeh epoch, maplen); 32023d14c5d2SYehuda Sadeh } 320342c1b124SIlya Dryomov p += maplen; 32043d14c5d2SYehuda Sadeh nr_maps--; 32053d14c5d2SYehuda Sadeh } 320642c1b124SIlya Dryomov if (handled_incremental) 32073d14c5d2SYehuda Sadeh goto done; 32083d14c5d2SYehuda Sadeh 32093d14c5d2SYehuda Sadeh /* full maps */ 32103d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 32113d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 32123d14c5d2SYehuda Sadeh while (nr_maps) { 32133d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 32143d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 32153d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 32163d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 32173d14c5d2SYehuda Sadeh if (nr_maps > 1) { 32183d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 32193d14c5d2SYehuda Sadeh epoch, maplen); 3220e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 32213d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 32223d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 32233d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 32243d14c5d2SYehuda Sadeh } else { 32253d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 32265aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 32275aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 322842c1b124SIlya Dryomov if (err) 32293d14c5d2SYehuda Sadeh goto bad; 32303d14c5d2SYehuda Sadeh } 32313d14c5d2SYehuda Sadeh p += maplen; 32323d14c5d2SYehuda Sadeh nr_maps--; 32333d14c5d2SYehuda Sadeh } 32343d14c5d2SYehuda Sadeh 32353d14c5d2SYehuda Sadeh done: 3236cd634fb6SSage Weil /* 3237cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 3238cd634fb6SSage Weil * we find out when we are no longer full and stop returning 3239cd634fb6SSage Weil * ENOSPC. 3240cd634fb6SSage Weil */ 324142c1b124SIlya Dryomov pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 324242c1b124SIlya Dryomov pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 324342c1b124SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 324442c1b124SIlya Dryomov have_pool_full(osdc); 324542c1b124SIlya Dryomov if (was_pauserd || was_pausewr || pauserd || pausewr) 324642c1b124SIlya Dryomov maybe_request_map(osdc); 3247cd634fb6SSage Weil 32485aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 324942c1b124SIlya Dryomov 325042c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 325142c1b124SIlya Dryomov osdc->osdmap->epoch); 32525aea3dcdSIlya Dryomov up_write(&osdc->lock); 32533d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 32543d14c5d2SYehuda Sadeh return; 32553d14c5d2SYehuda Sadeh 32563d14c5d2SYehuda Sadeh bad: 32573d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 32583d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 32595aea3dcdSIlya Dryomov up_write(&osdc->lock); 32605aea3dcdSIlya Dryomov } 32615aea3dcdSIlya Dryomov 32625aea3dcdSIlya Dryomov /* 32635aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 32645aea3dcdSIlya Dryomov */ 32655aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 32665aea3dcdSIlya Dryomov { 32675aea3dcdSIlya Dryomov struct rb_node *n; 32685aea3dcdSIlya Dryomov 3269922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 32705aea3dcdSIlya Dryomov struct ceph_osd_request *req = 32715aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 32725aea3dcdSIlya Dryomov 3273922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 3274922dab61SIlya Dryomov 32755aea3dcdSIlya Dryomov if (!req->r_linger) { 32765aea3dcdSIlya Dryomov if (!req->r_t.paused) 32775aea3dcdSIlya Dryomov send_request(req); 3278922dab61SIlya Dryomov } else { 3279922dab61SIlya Dryomov cancel_linger_request(req); 32805aea3dcdSIlya Dryomov } 32815aea3dcdSIlya Dryomov } 3282922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 3283922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3284922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3285922dab61SIlya Dryomov 3286922dab61SIlya Dryomov send_linger(lreq); 3287922dab61SIlya Dryomov } 32885aea3dcdSIlya Dryomov } 32895aea3dcdSIlya Dryomov 32905aea3dcdSIlya Dryomov /* 32915aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 32925aea3dcdSIlya Dryomov */ 32935aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 32945aea3dcdSIlya Dryomov { 32955aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 32965aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 32975aea3dcdSIlya Dryomov 32985aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 32995aea3dcdSIlya Dryomov 33005aea3dcdSIlya Dryomov down_write(&osdc->lock); 33015aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 33025aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 33035aea3dcdSIlya Dryomov goto out_unlock; 33045aea3dcdSIlya Dryomov } 33055aea3dcdSIlya Dryomov 33065aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 33075aea3dcdSIlya Dryomov kick_osd_requests(osd); 33085aea3dcdSIlya Dryomov maybe_request_map(osdc); 33095aea3dcdSIlya Dryomov 33105aea3dcdSIlya Dryomov out_unlock: 33115aea3dcdSIlya Dryomov up_write(&osdc->lock); 33123d14c5d2SYehuda Sadeh } 33133d14c5d2SYehuda Sadeh 33143d14c5d2SYehuda Sadeh /* 3315a40c4f10SYehuda Sadeh * Process osd watch notifications 3316a40c4f10SYehuda Sadeh */ 33173c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 33183c663bbdSAlex Elder struct ceph_msg *msg) 3319a40c4f10SYehuda Sadeh { 3320922dab61SIlya Dryomov void *p = msg->front.iov_base; 3321922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 3322922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 3323922dab61SIlya Dryomov struct linger_work *lwork; 3324922dab61SIlya Dryomov u8 proto_ver, opcode; 3325922dab61SIlya Dryomov u64 cookie, notify_id; 3326922dab61SIlya Dryomov u64 notifier_id = 0; 332719079203SIlya Dryomov s32 return_code = 0; 3328922dab61SIlya Dryomov void *payload = NULL; 3329922dab61SIlya Dryomov u32 payload_len = 0; 3330a40c4f10SYehuda Sadeh 3331a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 3332a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 3333a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 3334922dab61SIlya Dryomov p += 8; /* skip ver */ 3335a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 3336a40c4f10SYehuda Sadeh 3337922dab61SIlya Dryomov if (proto_ver >= 1) { 3338922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 3339922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 3340922dab61SIlya Dryomov payload = p; 3341922dab61SIlya Dryomov p += payload_len; 3342a40c4f10SYehuda Sadeh } 3343a40c4f10SYehuda Sadeh 3344922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 334519079203SIlya Dryomov ceph_decode_32_safe(&p, end, return_code, bad); 3346922dab61SIlya Dryomov 3347922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 3348922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 3349922dab61SIlya Dryomov 3350922dab61SIlya Dryomov down_read(&osdc->lock); 3351922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 3352922dab61SIlya Dryomov if (!lreq) { 3353922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 3354922dab61SIlya Dryomov cookie); 3355922dab61SIlya Dryomov goto out_unlock_osdc; 3356922dab61SIlya Dryomov } 3357922dab61SIlya Dryomov 3358922dab61SIlya Dryomov mutex_lock(&lreq->lock); 335919079203SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, 336019079203SIlya Dryomov opcode, cookie, lreq, lreq->is_watch); 3361922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 3362922dab61SIlya Dryomov if (!lreq->last_error) { 3363922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 3364922dab61SIlya Dryomov queue_watch_error(lreq); 3365922dab61SIlya Dryomov } 336619079203SIlya Dryomov } else if (!lreq->is_watch) { 336719079203SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ 336819079203SIlya Dryomov if (lreq->notify_id && lreq->notify_id != notify_id) { 336919079203SIlya Dryomov dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, 337019079203SIlya Dryomov lreq->notify_id, notify_id); 337119079203SIlya Dryomov } else if (!completion_done(&lreq->notify_finish_wait)) { 337219079203SIlya Dryomov struct ceph_msg_data *data = 337319079203SIlya Dryomov list_first_entry_or_null(&msg->data, 337419079203SIlya Dryomov struct ceph_msg_data, 337519079203SIlya Dryomov links); 337619079203SIlya Dryomov 337719079203SIlya Dryomov if (data) { 337819079203SIlya Dryomov if (lreq->preply_pages) { 337919079203SIlya Dryomov WARN_ON(data->type != 338019079203SIlya Dryomov CEPH_MSG_DATA_PAGES); 338119079203SIlya Dryomov *lreq->preply_pages = data->pages; 338219079203SIlya Dryomov *lreq->preply_len = data->length; 338319079203SIlya Dryomov } else { 338419079203SIlya Dryomov ceph_release_page_vector(data->pages, 338519079203SIlya Dryomov calc_pages_for(0, data->length)); 338619079203SIlya Dryomov } 338719079203SIlya Dryomov } 338819079203SIlya Dryomov lreq->notify_finish_error = return_code; 338919079203SIlya Dryomov complete_all(&lreq->notify_finish_wait); 339019079203SIlya Dryomov } 3391922dab61SIlya Dryomov } else { 3392922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 3393922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 3394922dab61SIlya Dryomov if (!lwork) { 3395922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 3396922dab61SIlya Dryomov goto out_unlock_lreq; 3397922dab61SIlya Dryomov } 3398922dab61SIlya Dryomov 3399922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 3400922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 3401922dab61SIlya Dryomov lwork->notify.payload = payload; 3402922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 3403922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 3404922dab61SIlya Dryomov lwork_queue(lwork); 3405922dab61SIlya Dryomov } 3406922dab61SIlya Dryomov 3407922dab61SIlya Dryomov out_unlock_lreq: 3408922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3409922dab61SIlya Dryomov out_unlock_osdc: 3410922dab61SIlya Dryomov up_read(&osdc->lock); 3411a40c4f10SYehuda Sadeh return; 3412a40c4f10SYehuda Sadeh 3413a40c4f10SYehuda Sadeh bad: 3414a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 3415a40c4f10SYehuda Sadeh } 3416a40c4f10SYehuda Sadeh 3417a40c4f10SYehuda Sadeh /* 34183d14c5d2SYehuda Sadeh * Register request, send initial attempt. 34193d14c5d2SYehuda Sadeh */ 34203d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 34213d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 34223d14c5d2SYehuda Sadeh bool nofail) 34233d14c5d2SYehuda Sadeh { 34245aea3dcdSIlya Dryomov down_read(&osdc->lock); 34255aea3dcdSIlya Dryomov submit_request(req, false); 34265aea3dcdSIlya Dryomov up_read(&osdc->lock); 34273d14c5d2SYehuda Sadeh 34285aea3dcdSIlya Dryomov return 0; 34293d14c5d2SYehuda Sadeh } 34303d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 34313d14c5d2SYehuda Sadeh 34323d14c5d2SYehuda Sadeh /* 3433c9f9b93dSIlya Dryomov * Unregister a registered request. The request is not completed (i.e. 3434c9f9b93dSIlya Dryomov * no callbacks or wakeups) - higher layers are supposed to know what 3435c9f9b93dSIlya Dryomov * they are canceling. 3436c9f9b93dSIlya Dryomov */ 3437c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 3438c9f9b93dSIlya Dryomov { 3439c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 3440c9f9b93dSIlya Dryomov 34415aea3dcdSIlya Dryomov down_write(&osdc->lock); 34425aea3dcdSIlya Dryomov if (req->r_osd) 34435aea3dcdSIlya Dryomov cancel_request(req); 34445aea3dcdSIlya Dryomov up_write(&osdc->lock); 3445c9f9b93dSIlya Dryomov } 3446c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 3447c9f9b93dSIlya Dryomov 3448c9f9b93dSIlya Dryomov /* 344942b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 345042b06965SIlya Dryomov */ 345142b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 345242b06965SIlya Dryomov unsigned long timeout) 345342b06965SIlya Dryomov { 345442b06965SIlya Dryomov long left; 345542b06965SIlya Dryomov 345642b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 345742b06965SIlya Dryomov left = wait_for_completion_interruptible_timeout(&req->r_completion, 345842b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 345942b06965SIlya Dryomov if (left <= 0) { 346042b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 346142b06965SIlya Dryomov ceph_osdc_cancel_request(req); 346242b06965SIlya Dryomov 346342b06965SIlya Dryomov /* kludge - need to to wake ceph_osdc_sync() */ 346442b06965SIlya Dryomov complete_all(&req->r_safe_completion); 346542b06965SIlya Dryomov } else { 346642b06965SIlya Dryomov left = req->r_result; /* completed */ 346742b06965SIlya Dryomov } 346842b06965SIlya Dryomov 346942b06965SIlya Dryomov return left; 347042b06965SIlya Dryomov } 347142b06965SIlya Dryomov 347242b06965SIlya Dryomov /* 34733d14c5d2SYehuda Sadeh * wait for a request to complete 34743d14c5d2SYehuda Sadeh */ 34753d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 34763d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 34773d14c5d2SYehuda Sadeh { 347842b06965SIlya Dryomov return wait_request_timeout(req, 0); 34793d14c5d2SYehuda Sadeh } 34803d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 34813d14c5d2SYehuda Sadeh 34823d14c5d2SYehuda Sadeh /* 34833d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 34843d14c5d2SYehuda Sadeh */ 34853d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 34863d14c5d2SYehuda Sadeh { 34875aea3dcdSIlya Dryomov struct rb_node *n, *p; 34885aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 34893d14c5d2SYehuda Sadeh 34905aea3dcdSIlya Dryomov again: 34915aea3dcdSIlya Dryomov down_read(&osdc->lock); 34925aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 34935aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 34945aea3dcdSIlya Dryomov 34955aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 34965aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 34975aea3dcdSIlya Dryomov struct ceph_osd_request *req = 34985aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 34995aea3dcdSIlya Dryomov 35003d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 35013d14c5d2SYehuda Sadeh break; 35023d14c5d2SYehuda Sadeh 35035aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 35043d14c5d2SYehuda Sadeh continue; 35053d14c5d2SYehuda Sadeh 35063d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 35075aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 35085aea3dcdSIlya Dryomov up_read(&osdc->lock); 35095aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 35105aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 35113d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 35123d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 35135aea3dcdSIlya Dryomov goto again; 35143d14c5d2SYehuda Sadeh } 35155aea3dcdSIlya Dryomov 35165aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 35175aea3dcdSIlya Dryomov } 35185aea3dcdSIlya Dryomov 35195aea3dcdSIlya Dryomov up_read(&osdc->lock); 35205aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 35213d14c5d2SYehuda Sadeh } 35223d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 35233d14c5d2SYehuda Sadeh 3524922dab61SIlya Dryomov static struct ceph_osd_request * 3525922dab61SIlya Dryomov alloc_linger_request(struct ceph_osd_linger_request *lreq) 3526922dab61SIlya Dryomov { 3527922dab61SIlya Dryomov struct ceph_osd_request *req; 3528922dab61SIlya Dryomov 3529922dab61SIlya Dryomov req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); 3530922dab61SIlya Dryomov if (!req) 3531922dab61SIlya Dryomov return NULL; 3532922dab61SIlya Dryomov 3533922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 3534922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 3535922dab61SIlya Dryomov 3536922dab61SIlya Dryomov if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { 3537922dab61SIlya Dryomov ceph_osdc_put_request(req); 3538922dab61SIlya Dryomov return NULL; 3539922dab61SIlya Dryomov } 3540922dab61SIlya Dryomov 3541922dab61SIlya Dryomov return req; 3542922dab61SIlya Dryomov } 3543922dab61SIlya Dryomov 3544922dab61SIlya Dryomov /* 3545922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 3546922dab61SIlya Dryomov */ 3547922dab61SIlya Dryomov struct ceph_osd_linger_request * 3548922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 3549922dab61SIlya Dryomov struct ceph_object_id *oid, 3550922dab61SIlya Dryomov struct ceph_object_locator *oloc, 3551922dab61SIlya Dryomov rados_watchcb2_t wcb, 3552922dab61SIlya Dryomov rados_watcherrcb_t errcb, 3553922dab61SIlya Dryomov void *data) 3554922dab61SIlya Dryomov { 3555922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 3556922dab61SIlya Dryomov int ret; 3557922dab61SIlya Dryomov 3558922dab61SIlya Dryomov lreq = linger_alloc(osdc); 3559922dab61SIlya Dryomov if (!lreq) 3560922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 3561922dab61SIlya Dryomov 356219079203SIlya Dryomov lreq->is_watch = true; 3563922dab61SIlya Dryomov lreq->wcb = wcb; 3564922dab61SIlya Dryomov lreq->errcb = errcb; 3565922dab61SIlya Dryomov lreq->data = data; 3566b07d3c4bSIlya Dryomov lreq->watch_valid_thru = jiffies; 3567922dab61SIlya Dryomov 3568922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 3569922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 3570922dab61SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK; 3571922dab61SIlya Dryomov lreq->mtime = CURRENT_TIME; 3572922dab61SIlya Dryomov 3573922dab61SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 3574922dab61SIlya Dryomov if (!lreq->reg_req) { 3575922dab61SIlya Dryomov ret = -ENOMEM; 3576922dab61SIlya Dryomov goto err_put_lreq; 3577922dab61SIlya Dryomov } 3578922dab61SIlya Dryomov 3579922dab61SIlya Dryomov lreq->ping_req = alloc_linger_request(lreq); 3580922dab61SIlya Dryomov if (!lreq->ping_req) { 3581922dab61SIlya Dryomov ret = -ENOMEM; 3582922dab61SIlya Dryomov goto err_put_lreq; 3583922dab61SIlya Dryomov } 3584922dab61SIlya Dryomov 3585922dab61SIlya Dryomov down_write(&osdc->lock); 3586922dab61SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 3587922dab61SIlya Dryomov osd_req_op_watch_init(lreq->reg_req, 0, lreq->linger_id, 3588922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_WATCH); 3589922dab61SIlya Dryomov osd_req_op_watch_init(lreq->ping_req, 0, lreq->linger_id, 3590922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_PING); 3591922dab61SIlya Dryomov linger_submit(lreq); 3592922dab61SIlya Dryomov up_write(&osdc->lock); 3593922dab61SIlya Dryomov 3594922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 3595922dab61SIlya Dryomov if (ret) { 3596922dab61SIlya Dryomov linger_cancel(lreq); 3597922dab61SIlya Dryomov goto err_put_lreq; 3598922dab61SIlya Dryomov } 3599922dab61SIlya Dryomov 3600922dab61SIlya Dryomov return lreq; 3601922dab61SIlya Dryomov 3602922dab61SIlya Dryomov err_put_lreq: 3603922dab61SIlya Dryomov linger_put(lreq); 3604922dab61SIlya Dryomov return ERR_PTR(ret); 3605922dab61SIlya Dryomov } 3606922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 3607922dab61SIlya Dryomov 3608922dab61SIlya Dryomov /* 3609922dab61SIlya Dryomov * Releases a ref. 3610922dab61SIlya Dryomov * 3611922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 3612922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 3613922dab61SIlya Dryomov * with mount_timeout"). 3614922dab61SIlya Dryomov */ 3615922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 3616922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 3617922dab61SIlya Dryomov { 3618922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 3619922dab61SIlya Dryomov struct ceph_osd_request *req; 3620922dab61SIlya Dryomov int ret; 3621922dab61SIlya Dryomov 3622922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 3623922dab61SIlya Dryomov if (!req) 3624922dab61SIlya Dryomov return -ENOMEM; 3625922dab61SIlya Dryomov 3626922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 3627922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 3628922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK; 3629922dab61SIlya Dryomov req->r_mtime = CURRENT_TIME; 3630922dab61SIlya Dryomov osd_req_op_watch_init(req, 0, lreq->linger_id, 3631922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_UNWATCH); 3632922dab61SIlya Dryomov 3633922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 3634922dab61SIlya Dryomov if (ret) 3635922dab61SIlya Dryomov goto out_put_req; 3636922dab61SIlya Dryomov 3637922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 3638922dab61SIlya Dryomov linger_cancel(lreq); 3639922dab61SIlya Dryomov linger_put(lreq); 3640922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 3641922dab61SIlya Dryomov 3642922dab61SIlya Dryomov out_put_req: 3643922dab61SIlya Dryomov ceph_osdc_put_request(req); 3644922dab61SIlya Dryomov return ret; 3645922dab61SIlya Dryomov } 3646922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 3647922dab61SIlya Dryomov 3648922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 3649922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 3650922dab61SIlya Dryomov size_t payload_len) 3651922dab61SIlya Dryomov { 3652922dab61SIlya Dryomov struct ceph_osd_req_op *op; 3653922dab61SIlya Dryomov struct ceph_pagelist *pl; 3654922dab61SIlya Dryomov int ret; 3655922dab61SIlya Dryomov 3656922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 3657922dab61SIlya Dryomov 3658922dab61SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 3659922dab61SIlya Dryomov if (!pl) 3660922dab61SIlya Dryomov return -ENOMEM; 3661922dab61SIlya Dryomov 3662922dab61SIlya Dryomov ceph_pagelist_init(pl); 3663922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 3664922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 3665922dab61SIlya Dryomov if (payload) { 3666922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 3667922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 3668922dab61SIlya Dryomov } else { 3669922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 3670922dab61SIlya Dryomov } 3671922dab61SIlya Dryomov if (ret) { 3672922dab61SIlya Dryomov ceph_pagelist_release(pl); 3673922dab61SIlya Dryomov return -ENOMEM; 3674922dab61SIlya Dryomov } 3675922dab61SIlya Dryomov 3676922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 3677922dab61SIlya Dryomov op->indata_len = pl->length; 3678922dab61SIlya Dryomov return 0; 3679922dab61SIlya Dryomov } 3680922dab61SIlya Dryomov 3681922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 3682922dab61SIlya Dryomov struct ceph_object_id *oid, 3683922dab61SIlya Dryomov struct ceph_object_locator *oloc, 3684922dab61SIlya Dryomov u64 notify_id, 3685922dab61SIlya Dryomov u64 cookie, 3686922dab61SIlya Dryomov void *payload, 3687922dab61SIlya Dryomov size_t payload_len) 3688922dab61SIlya Dryomov { 3689922dab61SIlya Dryomov struct ceph_osd_request *req; 3690922dab61SIlya Dryomov int ret; 3691922dab61SIlya Dryomov 3692922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 3693922dab61SIlya Dryomov if (!req) 3694922dab61SIlya Dryomov return -ENOMEM; 3695922dab61SIlya Dryomov 3696922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 3697922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 3698922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 3699922dab61SIlya Dryomov 3700922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 3701922dab61SIlya Dryomov if (ret) 3702922dab61SIlya Dryomov goto out_put_req; 3703922dab61SIlya Dryomov 3704922dab61SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 3705922dab61SIlya Dryomov payload_len); 3706922dab61SIlya Dryomov if (ret) 3707922dab61SIlya Dryomov goto out_put_req; 3708922dab61SIlya Dryomov 3709922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 3710922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 3711922dab61SIlya Dryomov 3712922dab61SIlya Dryomov out_put_req: 3713922dab61SIlya Dryomov ceph_osdc_put_request(req); 3714922dab61SIlya Dryomov return ret; 3715922dab61SIlya Dryomov } 3716922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 3717922dab61SIlya Dryomov 371819079203SIlya Dryomov static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, 371919079203SIlya Dryomov u64 cookie, u32 prot_ver, u32 timeout, 372019079203SIlya Dryomov void *payload, size_t payload_len) 372119079203SIlya Dryomov { 372219079203SIlya Dryomov struct ceph_osd_req_op *op; 372319079203SIlya Dryomov struct ceph_pagelist *pl; 372419079203SIlya Dryomov int ret; 372519079203SIlya Dryomov 372619079203SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); 372719079203SIlya Dryomov op->notify.cookie = cookie; 372819079203SIlya Dryomov 372919079203SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 373019079203SIlya Dryomov if (!pl) 373119079203SIlya Dryomov return -ENOMEM; 373219079203SIlya Dryomov 373319079203SIlya Dryomov ceph_pagelist_init(pl); 373419079203SIlya Dryomov ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ 373519079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, timeout); 373619079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 373719079203SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 373819079203SIlya Dryomov if (ret) { 373919079203SIlya Dryomov ceph_pagelist_release(pl); 374019079203SIlya Dryomov return -ENOMEM; 374119079203SIlya Dryomov } 374219079203SIlya Dryomov 374319079203SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify.request_data, pl); 374419079203SIlya Dryomov op->indata_len = pl->length; 374519079203SIlya Dryomov return 0; 374619079203SIlya Dryomov } 374719079203SIlya Dryomov 374819079203SIlya Dryomov /* 374919079203SIlya Dryomov * @timeout: in seconds 375019079203SIlya Dryomov * 375119079203SIlya Dryomov * @preply_{pages,len} are initialized both on success and error. 375219079203SIlya Dryomov * The caller is responsible for: 375319079203SIlya Dryomov * 375419079203SIlya Dryomov * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) 375519079203SIlya Dryomov */ 375619079203SIlya Dryomov int ceph_osdc_notify(struct ceph_osd_client *osdc, 375719079203SIlya Dryomov struct ceph_object_id *oid, 375819079203SIlya Dryomov struct ceph_object_locator *oloc, 375919079203SIlya Dryomov void *payload, 376019079203SIlya Dryomov size_t payload_len, 376119079203SIlya Dryomov u32 timeout, 376219079203SIlya Dryomov struct page ***preply_pages, 376319079203SIlya Dryomov size_t *preply_len) 376419079203SIlya Dryomov { 376519079203SIlya Dryomov struct ceph_osd_linger_request *lreq; 376619079203SIlya Dryomov struct page **pages; 376719079203SIlya Dryomov int ret; 376819079203SIlya Dryomov 376919079203SIlya Dryomov WARN_ON(!timeout); 377019079203SIlya Dryomov if (preply_pages) { 377119079203SIlya Dryomov *preply_pages = NULL; 377219079203SIlya Dryomov *preply_len = 0; 377319079203SIlya Dryomov } 377419079203SIlya Dryomov 377519079203SIlya Dryomov lreq = linger_alloc(osdc); 377619079203SIlya Dryomov if (!lreq) 377719079203SIlya Dryomov return -ENOMEM; 377819079203SIlya Dryomov 377919079203SIlya Dryomov lreq->preply_pages = preply_pages; 378019079203SIlya Dryomov lreq->preply_len = preply_len; 378119079203SIlya Dryomov 378219079203SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 378319079203SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 378419079203SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_READ; 378519079203SIlya Dryomov 378619079203SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 378719079203SIlya Dryomov if (!lreq->reg_req) { 378819079203SIlya Dryomov ret = -ENOMEM; 378919079203SIlya Dryomov goto out_put_lreq; 379019079203SIlya Dryomov } 379119079203SIlya Dryomov 379219079203SIlya Dryomov /* for notify_id */ 379319079203SIlya Dryomov pages = ceph_alloc_page_vector(1, GFP_NOIO); 379419079203SIlya Dryomov if (IS_ERR(pages)) { 379519079203SIlya Dryomov ret = PTR_ERR(pages); 379619079203SIlya Dryomov goto out_put_lreq; 379719079203SIlya Dryomov } 379819079203SIlya Dryomov 379919079203SIlya Dryomov down_write(&osdc->lock); 380019079203SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 380119079203SIlya Dryomov ret = osd_req_op_notify_init(lreq->reg_req, 0, lreq->linger_id, 1, 380219079203SIlya Dryomov timeout, payload, payload_len); 380319079203SIlya Dryomov if (ret) { 380419079203SIlya Dryomov linger_unregister(lreq); 380519079203SIlya Dryomov up_write(&osdc->lock); 380619079203SIlya Dryomov ceph_release_page_vector(pages, 1); 380719079203SIlya Dryomov goto out_put_lreq; 380819079203SIlya Dryomov } 380919079203SIlya Dryomov ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, 381019079203SIlya Dryomov response_data), 381119079203SIlya Dryomov pages, PAGE_SIZE, 0, false, true); 381219079203SIlya Dryomov linger_submit(lreq); 381319079203SIlya Dryomov up_write(&osdc->lock); 381419079203SIlya Dryomov 381519079203SIlya Dryomov ret = linger_reg_commit_wait(lreq); 381619079203SIlya Dryomov if (!ret) 381719079203SIlya Dryomov ret = linger_notify_finish_wait(lreq); 381819079203SIlya Dryomov else 381919079203SIlya Dryomov dout("lreq %p failed to initiate notify %d\n", lreq, ret); 382019079203SIlya Dryomov 382119079203SIlya Dryomov linger_cancel(lreq); 382219079203SIlya Dryomov out_put_lreq: 382319079203SIlya Dryomov linger_put(lreq); 382419079203SIlya Dryomov return ret; 382519079203SIlya Dryomov } 382619079203SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify); 382719079203SIlya Dryomov 38283d14c5d2SYehuda Sadeh /* 3829b07d3c4bSIlya Dryomov * Return the number of milliseconds since the watch was last 3830b07d3c4bSIlya Dryomov * confirmed, or an error. If there is an error, the watch is no 3831b07d3c4bSIlya Dryomov * longer valid, and should be destroyed with ceph_osdc_unwatch(). 3832b07d3c4bSIlya Dryomov */ 3833b07d3c4bSIlya Dryomov int ceph_osdc_watch_check(struct ceph_osd_client *osdc, 3834b07d3c4bSIlya Dryomov struct ceph_osd_linger_request *lreq) 3835b07d3c4bSIlya Dryomov { 3836b07d3c4bSIlya Dryomov unsigned long stamp, age; 3837b07d3c4bSIlya Dryomov int ret; 3838b07d3c4bSIlya Dryomov 3839b07d3c4bSIlya Dryomov down_read(&osdc->lock); 3840b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 3841b07d3c4bSIlya Dryomov stamp = lreq->watch_valid_thru; 3842b07d3c4bSIlya Dryomov if (!list_empty(&lreq->pending_lworks)) { 3843b07d3c4bSIlya Dryomov struct linger_work *lwork = 3844b07d3c4bSIlya Dryomov list_first_entry(&lreq->pending_lworks, 3845b07d3c4bSIlya Dryomov struct linger_work, 3846b07d3c4bSIlya Dryomov pending_item); 3847b07d3c4bSIlya Dryomov 3848b07d3c4bSIlya Dryomov if (time_before(lwork->queued_stamp, stamp)) 3849b07d3c4bSIlya Dryomov stamp = lwork->queued_stamp; 3850b07d3c4bSIlya Dryomov } 3851b07d3c4bSIlya Dryomov age = jiffies - stamp; 3852b07d3c4bSIlya Dryomov dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, 3853b07d3c4bSIlya Dryomov lreq, lreq->linger_id, age, lreq->last_error); 3854b07d3c4bSIlya Dryomov /* we are truncating to msecs, so return a safe upper bound */ 3855b07d3c4bSIlya Dryomov ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); 3856b07d3c4bSIlya Dryomov 3857b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 3858b07d3c4bSIlya Dryomov up_read(&osdc->lock); 3859b07d3c4bSIlya Dryomov return ret; 3860b07d3c4bSIlya Dryomov } 3861b07d3c4bSIlya Dryomov 3862b07d3c4bSIlya Dryomov /* 3863dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 3864dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 3865dd935f44SJosh Durgin */ 3866f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 3867dd935f44SJosh Durgin { 3868dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 3869dd935f44SJosh Durgin } 3870dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 3871dd935f44SJosh Durgin 3872dd935f44SJosh Durgin 3873dd935f44SJosh Durgin /* 38743d14c5d2SYehuda Sadeh * init, shutdown 38753d14c5d2SYehuda Sadeh */ 38763d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 38773d14c5d2SYehuda Sadeh { 38783d14c5d2SYehuda Sadeh int err; 38793d14c5d2SYehuda Sadeh 38803d14c5d2SYehuda Sadeh dout("init\n"); 38813d14c5d2SYehuda Sadeh osdc->client = client; 38825aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 38833d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 38843d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 38859dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 38865aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 38875aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 38885aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 3889922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 38904609245eSIlya Dryomov osdc->map_checks = RB_ROOT; 38914609245eSIlya Dryomov osdc->linger_map_checks = RB_ROOT; 38923d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 38933d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 38943d14c5d2SYehuda Sadeh 38953d14c5d2SYehuda Sadeh err = -ENOMEM; 3896e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 3897e5253a7bSIlya Dryomov if (!osdc->osdmap) 3898e5253a7bSIlya Dryomov goto out; 3899e5253a7bSIlya Dryomov 39009e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 39019e767adbSIlya Dryomov ceph_osd_request_cache); 39023d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 3903e5253a7bSIlya Dryomov goto out_map; 39043d14c5d2SYehuda Sadeh 3905d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 3906711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 39073d14c5d2SYehuda Sadeh if (err < 0) 39083d14c5d2SYehuda Sadeh goto out_mempool; 3909d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 3910711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 39113d14c5d2SYehuda Sadeh if (err < 0) 39123d14c5d2SYehuda Sadeh goto out_msgpool; 3913a40c4f10SYehuda Sadeh 3914dbcae088SDan Carpenter err = -ENOMEM; 3915a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 3916dbcae088SDan Carpenter if (!osdc->notify_wq) 3917c172ec5cSIlya Dryomov goto out_msgpool_reply; 3918c172ec5cSIlya Dryomov 3919fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 3920fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 3921b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 3922b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 3923b37ee1b9SIlya Dryomov 39243d14c5d2SYehuda Sadeh return 0; 39253d14c5d2SYehuda Sadeh 3926c172ec5cSIlya Dryomov out_msgpool_reply: 3927c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 39283d14c5d2SYehuda Sadeh out_msgpool: 39293d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 39303d14c5d2SYehuda Sadeh out_mempool: 39313d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 3932e5253a7bSIlya Dryomov out_map: 3933e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 39343d14c5d2SYehuda Sadeh out: 39353d14c5d2SYehuda Sadeh return err; 39363d14c5d2SYehuda Sadeh } 39373d14c5d2SYehuda Sadeh 39383d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 39393d14c5d2SYehuda Sadeh { 3940a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 3941a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 39423d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 39433d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 394442a2c09fSIlya Dryomov 39455aea3dcdSIlya Dryomov down_write(&osdc->lock); 394642a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 394742a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 394842a2c09fSIlya Dryomov struct ceph_osd, o_node); 39495aea3dcdSIlya Dryomov close_osd(osd); 395042a2c09fSIlya Dryomov } 39515aea3dcdSIlya Dryomov up_write(&osdc->lock); 39525aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->homeless_osd.o_ref) != 1); 39535aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 39545aea3dcdSIlya Dryomov 39555aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 3956922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 39574609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); 39584609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); 39595aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 39605aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 396142a2c09fSIlya Dryomov 39623d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 39633d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 39643d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 39653d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 39663d14c5d2SYehuda Sadeh } 39673d14c5d2SYehuda Sadeh 39683d14c5d2SYehuda Sadeh /* 39693d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 39703d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 39713d14c5d2SYehuda Sadeh */ 39723d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 39733d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 39743d14c5d2SYehuda Sadeh u64 off, u64 *plen, 39753d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 3976b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 39773d14c5d2SYehuda Sadeh { 39783d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 39793d14c5d2SYehuda Sadeh int rc = 0; 39803d14c5d2SYehuda Sadeh 39813d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 39823d14c5d2SYehuda Sadeh vino.snap, off, *plen); 3983715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 39843d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 3985acead002SAlex Elder NULL, truncate_seq, truncate_size, 3986153e5167SAlex Elder false); 39876816282dSSage Weil if (IS_ERR(req)) 39886816282dSSage Weil return PTR_ERR(req); 39893d14c5d2SYehuda Sadeh 39903d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 3991406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 3992a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 39933d14c5d2SYehuda Sadeh 3994e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 399543bfe5deSAlex Elder off, *plen, *plen, page_align); 39963d14c5d2SYehuda Sadeh 39973d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 39983d14c5d2SYehuda Sadeh if (!rc) 39993d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 40003d14c5d2SYehuda Sadeh 40013d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 40023d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 40033d14c5d2SYehuda Sadeh return rc; 40043d14c5d2SYehuda Sadeh } 40053d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 40063d14c5d2SYehuda Sadeh 40073d14c5d2SYehuda Sadeh /* 40083d14c5d2SYehuda Sadeh * do a synchronous write on N pages 40093d14c5d2SYehuda Sadeh */ 40103d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 40113d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 40123d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 40133d14c5d2SYehuda Sadeh u64 off, u64 len, 40143d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 40153d14c5d2SYehuda Sadeh struct timespec *mtime, 401624808826SAlex Elder struct page **pages, int num_pages) 40173d14c5d2SYehuda Sadeh { 40183d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 40193d14c5d2SYehuda Sadeh int rc = 0; 4020b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 40213d14c5d2SYehuda Sadeh 4022715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 40233d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 402424808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 4025acead002SAlex Elder snapc, truncate_seq, truncate_size, 4026153e5167SAlex Elder true); 40276816282dSSage Weil if (IS_ERR(req)) 40286816282dSSage Weil return PTR_ERR(req); 40293d14c5d2SYehuda Sadeh 40303d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 4031406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 403243bfe5deSAlex Elder false, false); 403343bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 40343d14c5d2SYehuda Sadeh 4035bb873b53SIlya Dryomov req->r_mtime = *mtime; 403687f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 40373d14c5d2SYehuda Sadeh if (!rc) 40383d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 40393d14c5d2SYehuda Sadeh 40403d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 40413d14c5d2SYehuda Sadeh if (rc == 0) 40423d14c5d2SYehuda Sadeh rc = len; 40433d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 40443d14c5d2SYehuda Sadeh return rc; 40453d14c5d2SYehuda Sadeh } 40463d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 40473d14c5d2SYehuda Sadeh 40485522ae0bSAlex Elder int ceph_osdc_setup(void) 40495522ae0bSAlex Elder { 40503f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 40513f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 40523f1af42aSIlya Dryomov 40535522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 40543f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 40553f1af42aSIlya Dryomov 0, 0, NULL); 40565522ae0bSAlex Elder 40575522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 40585522ae0bSAlex Elder } 40595522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 40605522ae0bSAlex Elder 40615522ae0bSAlex Elder void ceph_osdc_cleanup(void) 40625522ae0bSAlex Elder { 40635522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 40645522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 40655522ae0bSAlex Elder ceph_osd_request_cache = NULL; 40665522ae0bSAlex Elder } 40675522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 40685522ae0bSAlex Elder 40693d14c5d2SYehuda Sadeh /* 40703d14c5d2SYehuda Sadeh * handle incoming message 40713d14c5d2SYehuda Sadeh */ 40723d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 40733d14c5d2SYehuda Sadeh { 40743d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 40755aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 40763d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 40773d14c5d2SYehuda Sadeh 40783d14c5d2SYehuda Sadeh switch (type) { 40793d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 40803d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 40813d14c5d2SYehuda Sadeh break; 40823d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 40835aea3dcdSIlya Dryomov handle_reply(osd, msg); 40843d14c5d2SYehuda Sadeh break; 4085a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 4086a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 4087a40c4f10SYehuda Sadeh break; 40883d14c5d2SYehuda Sadeh 40893d14c5d2SYehuda Sadeh default: 40903d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 40913d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 40923d14c5d2SYehuda Sadeh } 40935aea3dcdSIlya Dryomov 40943d14c5d2SYehuda Sadeh ceph_msg_put(msg); 40953d14c5d2SYehuda Sadeh } 40963d14c5d2SYehuda Sadeh 40973d14c5d2SYehuda Sadeh /* 4098d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 4099d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 4100d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 41013d14c5d2SYehuda Sadeh */ 41023d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 41033d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 41043d14c5d2SYehuda Sadeh int *skip) 41053d14c5d2SYehuda Sadeh { 41063d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 41073d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 41085aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 41093d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 41103f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 41113d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 41125aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 41133d14c5d2SYehuda Sadeh 41145aea3dcdSIlya Dryomov down_read(&osdc->lock); 41155aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 41165aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 41175aea3dcdSIlya Dryomov *skip = 1; 41185aea3dcdSIlya Dryomov goto out_unlock_osdc; 41195aea3dcdSIlya Dryomov } 41205aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 41215aea3dcdSIlya Dryomov 41225aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 41235aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 41243d14c5d2SYehuda Sadeh if (!req) { 4125cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 4126cd8140c6SIlya Dryomov osd->o_osd, tid); 4127d15f9d69SIlya Dryomov *skip = 1; 41285aea3dcdSIlya Dryomov goto out_unlock_session; 41293d14c5d2SYehuda Sadeh } 41303d14c5d2SYehuda Sadeh 41318921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 41323d14c5d2SYehuda Sadeh 4133f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 4134d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 4135d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 4136d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 41373f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 41383f0a4ac5SIlya Dryomov false); 41393d14c5d2SYehuda Sadeh if (!m) 41405aea3dcdSIlya Dryomov goto out_unlock_session; 41413d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 41423d14c5d2SYehuda Sadeh req->r_reply = m; 41433d14c5d2SYehuda Sadeh } 41443d14c5d2SYehuda Sadeh 4145d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 4146d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 4147d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 4148d15f9d69SIlya Dryomov req->r_reply->data_length); 41493d14c5d2SYehuda Sadeh m = NULL; 4150d15f9d69SIlya Dryomov *skip = 1; 41515aea3dcdSIlya Dryomov goto out_unlock_session; 41523d14c5d2SYehuda Sadeh } 4153d15f9d69SIlya Dryomov 4154d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 41553d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 41563d14c5d2SYehuda Sadeh 41575aea3dcdSIlya Dryomov out_unlock_session: 41585aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 41595aea3dcdSIlya Dryomov out_unlock_osdc: 41605aea3dcdSIlya Dryomov up_read(&osdc->lock); 41613d14c5d2SYehuda Sadeh return m; 41623d14c5d2SYehuda Sadeh } 41633d14c5d2SYehuda Sadeh 416419079203SIlya Dryomov /* 416519079203SIlya Dryomov * TODO: switch to a msg-owned pagelist 416619079203SIlya Dryomov */ 416719079203SIlya Dryomov static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) 416819079203SIlya Dryomov { 416919079203SIlya Dryomov struct ceph_msg *m; 417019079203SIlya Dryomov int type = le16_to_cpu(hdr->type); 417119079203SIlya Dryomov u32 front_len = le32_to_cpu(hdr->front_len); 417219079203SIlya Dryomov u32 data_len = le32_to_cpu(hdr->data_len); 417319079203SIlya Dryomov 417419079203SIlya Dryomov m = ceph_msg_new(type, front_len, GFP_NOIO, false); 417519079203SIlya Dryomov if (!m) 417619079203SIlya Dryomov return NULL; 417719079203SIlya Dryomov 417819079203SIlya Dryomov if (data_len) { 417919079203SIlya Dryomov struct page **pages; 418019079203SIlya Dryomov struct ceph_osd_data osd_data; 418119079203SIlya Dryomov 418219079203SIlya Dryomov pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), 418319079203SIlya Dryomov GFP_NOIO); 418419079203SIlya Dryomov if (!pages) { 418519079203SIlya Dryomov ceph_msg_put(m); 418619079203SIlya Dryomov return NULL; 418719079203SIlya Dryomov } 418819079203SIlya Dryomov 418919079203SIlya Dryomov ceph_osd_data_pages_init(&osd_data, pages, data_len, 0, false, 419019079203SIlya Dryomov false); 419119079203SIlya Dryomov ceph_osdc_msg_data_add(m, &osd_data); 419219079203SIlya Dryomov } 419319079203SIlya Dryomov 419419079203SIlya Dryomov return m; 419519079203SIlya Dryomov } 419619079203SIlya Dryomov 41973d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 41983d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 41993d14c5d2SYehuda Sadeh int *skip) 42003d14c5d2SYehuda Sadeh { 42013d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 42023d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 42033d14c5d2SYehuda Sadeh 42041c20f2d2SAlex Elder *skip = 0; 42053d14c5d2SYehuda Sadeh switch (type) { 42063d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 4207a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 420819079203SIlya Dryomov return alloc_msg_with_page_vector(hdr); 42093d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 42103d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 42113d14c5d2SYehuda Sadeh default: 42125aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 42135aea3dcdSIlya Dryomov osd->o_osd, type); 42143d14c5d2SYehuda Sadeh *skip = 1; 42153d14c5d2SYehuda Sadeh return NULL; 42163d14c5d2SYehuda Sadeh } 42173d14c5d2SYehuda Sadeh } 42183d14c5d2SYehuda Sadeh 42193d14c5d2SYehuda Sadeh /* 42203d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 42213d14c5d2SYehuda Sadeh */ 42223d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 42233d14c5d2SYehuda Sadeh { 42243d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 42253d14c5d2SYehuda Sadeh if (get_osd(osd)) 42263d14c5d2SYehuda Sadeh return con; 42273d14c5d2SYehuda Sadeh return NULL; 42283d14c5d2SYehuda Sadeh } 42293d14c5d2SYehuda Sadeh 42303d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 42313d14c5d2SYehuda Sadeh { 42323d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 42333d14c5d2SYehuda Sadeh put_osd(osd); 42343d14c5d2SYehuda Sadeh } 42353d14c5d2SYehuda Sadeh 42363d14c5d2SYehuda Sadeh /* 42373d14c5d2SYehuda Sadeh * authentication 42383d14c5d2SYehuda Sadeh */ 4239a3530df3SAlex Elder /* 4240a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 4241a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 4242a3530df3SAlex Elder */ 4243a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 42448f43fb53SAlex Elder int *proto, int force_new) 42453d14c5d2SYehuda Sadeh { 42463d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 42473d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 42483d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 424974f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 42503d14c5d2SYehuda Sadeh 425174f1869fSAlex Elder if (force_new && auth->authorizer) { 42526c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 425374f1869fSAlex Elder auth->authorizer = NULL; 42543d14c5d2SYehuda Sadeh } 425527859f97SSage Weil if (!auth->authorizer) { 425627859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 4257a3530df3SAlex Elder auth); 42583d14c5d2SYehuda Sadeh if (ret) 4259a3530df3SAlex Elder return ERR_PTR(ret); 426027859f97SSage Weil } else { 426127859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 42620bed9b5cSSage Weil auth); 42630bed9b5cSSage Weil if (ret) 42640bed9b5cSSage Weil return ERR_PTR(ret); 42653d14c5d2SYehuda Sadeh } 42663d14c5d2SYehuda Sadeh *proto = ac->protocol; 426774f1869fSAlex Elder 4268a3530df3SAlex Elder return auth; 42693d14c5d2SYehuda Sadeh } 42703d14c5d2SYehuda Sadeh 42713d14c5d2SYehuda Sadeh 42723d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 42733d14c5d2SYehuda Sadeh { 42743d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 42753d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 42763d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 42773d14c5d2SYehuda Sadeh 427827859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 42793d14c5d2SYehuda Sadeh } 42803d14c5d2SYehuda Sadeh 42813d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 42823d14c5d2SYehuda Sadeh { 42833d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 42843d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 42853d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 42863d14c5d2SYehuda Sadeh 428727859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 42883d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 42893d14c5d2SYehuda Sadeh } 42903d14c5d2SYehuda Sadeh 429179dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 429233d07337SYan, Zheng { 429379dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 429433d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 429579dbd1baSIlya Dryomov 429633d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 429733d07337SYan, Zheng } 429833d07337SYan, Zheng 429979dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 430033d07337SYan, Zheng { 430179dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 430233d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 430379dbd1baSIlya Dryomov 430433d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 430533d07337SYan, Zheng } 430633d07337SYan, Zheng 43073d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 43083d14c5d2SYehuda Sadeh .get = get_osd_con, 43093d14c5d2SYehuda Sadeh .put = put_osd_con, 43103d14c5d2SYehuda Sadeh .dispatch = dispatch, 43113d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 43123d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 43133d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 43143d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 431579dbd1baSIlya Dryomov .sign_message = osd_sign_message, 431679dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 43175aea3dcdSIlya Dryomov .fault = osd_fault, 43183d14c5d2SYehuda Sadeh }; 4319