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); 39030c156d9SYan, Zheng ceph_oloc_destroy(&t->base_oloc); 39163244fa1SIlya Dryomov ceph_oid_destroy(&t->target_oid); 39230c156d9SYan, Zheng ceph_oloc_destroy(&t->target_oloc); 39363244fa1SIlya Dryomov } 39463244fa1SIlya Dryomov 39563244fa1SIlya Dryomov /* 3963d14c5d2SYehuda Sadeh * requests 3973d14c5d2SYehuda Sadeh */ 3983540bfdbSIlya Dryomov static void request_release_checks(struct ceph_osd_request *req) 3993540bfdbSIlya Dryomov { 4003540bfdbSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 4014609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node)); 4023540bfdbSIlya Dryomov WARN_ON(!list_empty(&req->r_unsafe_item)); 4033540bfdbSIlya Dryomov WARN_ON(req->r_osd); 4043540bfdbSIlya Dryomov } 4053540bfdbSIlya Dryomov 4069e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 4073d14c5d2SYehuda Sadeh { 4089e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 4099e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 4105476492fSAlex Elder unsigned int which; 4113d14c5d2SYehuda Sadeh 4129e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 4139e94af20SIlya Dryomov req->r_request, req->r_reply); 4143540bfdbSIlya Dryomov request_release_checks(req); 4159e94af20SIlya Dryomov 4163d14c5d2SYehuda Sadeh if (req->r_request) 4173d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 4185aea3dcdSIlya Dryomov if (req->r_reply) 419ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 4200fff87ecSAlex Elder 4215476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 4225476492fSAlex Elder osd_req_op_data_release(req, which); 4230fff87ecSAlex Elder 424a66dd383SIlya Dryomov target_destroy(&req->r_t); 4253d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 426d30291b9SIlya Dryomov 4273d14c5d2SYehuda Sadeh if (req->r_mempool) 4283d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 4293f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 4305522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 4313f1af42aSIlya Dryomov else 4323f1af42aSIlya Dryomov kfree(req); 4333d14c5d2SYehuda Sadeh } 4349e94af20SIlya Dryomov 4359e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 4369e94af20SIlya Dryomov { 4379e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 4389e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 4399e94af20SIlya Dryomov kref_get(&req->r_kref); 4409e94af20SIlya Dryomov } 4419e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 4429e94af20SIlya Dryomov 4439e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 4449e94af20SIlya Dryomov { 4453ed97d63SIlya Dryomov if (req) { 4469e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 4479e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 4489e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 4499e94af20SIlya Dryomov } 4503ed97d63SIlya Dryomov } 4519e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 4523d14c5d2SYehuda Sadeh 4533540bfdbSIlya Dryomov static void request_init(struct ceph_osd_request *req) 4543540bfdbSIlya Dryomov { 4553540bfdbSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 4563540bfdbSIlya Dryomov memset(req, 0, sizeof(*req)); 4573540bfdbSIlya Dryomov 4583540bfdbSIlya Dryomov kref_init(&req->r_kref); 4593540bfdbSIlya Dryomov init_completion(&req->r_completion); 4603540bfdbSIlya Dryomov init_completion(&req->r_safe_completion); 4613540bfdbSIlya Dryomov RB_CLEAR_NODE(&req->r_node); 4624609245eSIlya Dryomov RB_CLEAR_NODE(&req->r_mc_node); 4633540bfdbSIlya Dryomov INIT_LIST_HEAD(&req->r_unsafe_item); 4643540bfdbSIlya Dryomov 4653540bfdbSIlya Dryomov target_init(&req->r_t); 4663540bfdbSIlya Dryomov } 4673540bfdbSIlya Dryomov 468922dab61SIlya Dryomov /* 469922dab61SIlya Dryomov * This is ugly, but it allows us to reuse linger registration and ping 470922dab61SIlya Dryomov * requests, keeping the structure of the code around send_linger{_ping}() 471922dab61SIlya Dryomov * reasonable. Setting up a min_nr=2 mempool for each linger request 472922dab61SIlya Dryomov * and dealing with copying ops (this blasts req only, watch op remains 473922dab61SIlya Dryomov * intact) isn't any better. 474922dab61SIlya Dryomov */ 475922dab61SIlya Dryomov static void request_reinit(struct ceph_osd_request *req) 476922dab61SIlya Dryomov { 477922dab61SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 478922dab61SIlya Dryomov bool mempool = req->r_mempool; 479922dab61SIlya Dryomov unsigned int num_ops = req->r_num_ops; 480922dab61SIlya Dryomov u64 snapid = req->r_snapid; 481922dab61SIlya Dryomov struct ceph_snap_context *snapc = req->r_snapc; 482922dab61SIlya Dryomov bool linger = req->r_linger; 483922dab61SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 484922dab61SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 485922dab61SIlya Dryomov 486922dab61SIlya Dryomov dout("%s req %p\n", __func__, req); 487922dab61SIlya Dryomov WARN_ON(atomic_read(&req->r_kref.refcount) != 1); 488922dab61SIlya Dryomov request_release_checks(req); 489922dab61SIlya Dryomov 490922dab61SIlya Dryomov WARN_ON(atomic_read(&request_msg->kref.refcount) != 1); 491922dab61SIlya Dryomov WARN_ON(atomic_read(&reply_msg->kref.refcount) != 1); 492922dab61SIlya Dryomov target_destroy(&req->r_t); 493922dab61SIlya Dryomov 494922dab61SIlya Dryomov request_init(req); 495922dab61SIlya Dryomov req->r_osdc = osdc; 496922dab61SIlya Dryomov req->r_mempool = mempool; 497922dab61SIlya Dryomov req->r_num_ops = num_ops; 498922dab61SIlya Dryomov req->r_snapid = snapid; 499922dab61SIlya Dryomov req->r_snapc = snapc; 500922dab61SIlya Dryomov req->r_linger = linger; 501922dab61SIlya Dryomov req->r_request = request_msg; 502922dab61SIlya Dryomov req->r_reply = reply_msg; 503922dab61SIlya Dryomov } 504922dab61SIlya Dryomov 5053d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 5063d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5071b83bef2SSage Weil unsigned int num_ops, 5083d14c5d2SYehuda Sadeh bool use_mempool, 50954a54007SAlex Elder gfp_t gfp_flags) 5103d14c5d2SYehuda Sadeh { 5113d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5123d14c5d2SYehuda Sadeh 5133d14c5d2SYehuda Sadeh if (use_mempool) { 5143f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 5153d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 5163f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 5173f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 5183d14c5d2SYehuda Sadeh } else { 5193f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 5203f1af42aSIlya Dryomov req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), 5213f1af42aSIlya Dryomov gfp_flags); 5223d14c5d2SYehuda Sadeh } 5233f1af42aSIlya Dryomov if (unlikely(!req)) 5243d14c5d2SYehuda Sadeh return NULL; 5253d14c5d2SYehuda Sadeh 5263540bfdbSIlya Dryomov request_init(req); 5273d14c5d2SYehuda Sadeh req->r_osdc = osdc; 5283d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 52979528734SAlex Elder req->r_num_ops = num_ops; 53084127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 53184127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 5323d14c5d2SYehuda Sadeh 53313d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 53413d1ad16SIlya Dryomov return req; 5353f1af42aSIlya Dryomov } 53613d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 5373f1af42aSIlya Dryomov 53830c156d9SYan, Zheng static int ceph_oloc_encoding_size(struct ceph_object_locator *oloc) 53930c156d9SYan, Zheng { 54030c156d9SYan, Zheng return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0); 54130c156d9SYan, Zheng } 54230c156d9SYan, Zheng 54313d1ad16SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 54413d1ad16SIlya Dryomov { 54513d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 54613d1ad16SIlya Dryomov struct ceph_msg *msg; 54713d1ad16SIlya Dryomov int msg_size; 5483d14c5d2SYehuda Sadeh 549d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 55030c156d9SYan, Zheng WARN_ON(ceph_oloc_empty(&req->r_base_oloc)); 551d30291b9SIlya Dryomov 55213d1ad16SIlya Dryomov /* create request message */ 553ae458f5aSIlya Dryomov msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ 554ae458f5aSIlya Dryomov msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ 55530c156d9SYan, Zheng msg_size += CEPH_ENCODING_START_BLK_LEN + 55630c156d9SYan, Zheng ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */ 557ae458f5aSIlya Dryomov msg_size += 1 + 8 + 4 + 4; /* pgid */ 55813d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 55913d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 560ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 561ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 56213d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 563ae458f5aSIlya Dryomov msg_size += 4; /* retry_attempt */ 564ae458f5aSIlya Dryomov 56513d1ad16SIlya Dryomov if (req->r_mempool) 5663d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 5673d14c5d2SYehuda Sadeh else 56813d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); 56913d1ad16SIlya Dryomov if (!msg) 57013d1ad16SIlya Dryomov return -ENOMEM; 5713d14c5d2SYehuda Sadeh 5723d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 5733d14c5d2SYehuda Sadeh req->r_request = msg; 5743d14c5d2SYehuda Sadeh 57513d1ad16SIlya Dryomov /* create reply message */ 57613d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 577711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 578711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 57913d1ad16SIlya Dryomov 58013d1ad16SIlya Dryomov if (req->r_mempool) 58113d1ad16SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 58213d1ad16SIlya Dryomov else 58313d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); 58413d1ad16SIlya Dryomov if (!msg) 58513d1ad16SIlya Dryomov return -ENOMEM; 58613d1ad16SIlya Dryomov 58713d1ad16SIlya Dryomov req->r_reply = msg; 58813d1ad16SIlya Dryomov 58913d1ad16SIlya Dryomov return 0; 59013d1ad16SIlya Dryomov } 59113d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 5923d14c5d2SYehuda Sadeh 593a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 594a8dd0a37SAlex Elder { 595a8dd0a37SAlex Elder switch (opcode) { 59670b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 59770b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 59870b5bfa3SIlya Dryomov #undef GENERATE_CASE 599a8dd0a37SAlex Elder default: 600a8dd0a37SAlex Elder return false; 601a8dd0a37SAlex Elder } 602a8dd0a37SAlex Elder } 603a8dd0a37SAlex Elder 60433803f33SAlex Elder /* 60533803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 60633803f33SAlex Elder * other information associated with them. It also serves as a 60733803f33SAlex Elder * common init routine for all the other init functions, below. 60833803f33SAlex Elder */ 609c99d2d4aSAlex Elder static struct ceph_osd_req_op * 61049719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 611144cba14SYan, Zheng u16 opcode, u32 flags) 61233803f33SAlex Elder { 613c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 614c99d2d4aSAlex Elder 615c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 61633803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 61733803f33SAlex Elder 618c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 61933803f33SAlex Elder memset(op, 0, sizeof (*op)); 62033803f33SAlex Elder op->op = opcode; 621144cba14SYan, Zheng op->flags = flags; 622c99d2d4aSAlex Elder 623c99d2d4aSAlex Elder return op; 62433803f33SAlex Elder } 62533803f33SAlex Elder 62649719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 627144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 62849719778SAlex Elder { 629144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 63049719778SAlex Elder } 63149719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 63249719778SAlex Elder 633c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 634c99d2d4aSAlex Elder unsigned int which, u16 opcode, 63533803f33SAlex Elder u64 offset, u64 length, 63633803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 63733803f33SAlex Elder { 638144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 639144cba14SYan, Zheng opcode, 0); 64033803f33SAlex Elder size_t payload_len = 0; 64133803f33SAlex Elder 642ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 643e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 644e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 64533803f33SAlex Elder 64633803f33SAlex Elder op->extent.offset = offset; 64733803f33SAlex Elder op->extent.length = length; 64833803f33SAlex Elder op->extent.truncate_size = truncate_size; 64933803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 650e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 65133803f33SAlex Elder payload_len += length; 65233803f33SAlex Elder 653de2aa102SIlya Dryomov op->indata_len = payload_len; 65433803f33SAlex Elder } 65533803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 65633803f33SAlex Elder 657c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 658c99d2d4aSAlex Elder unsigned int which, u64 length) 659e5975c7cSAlex Elder { 660c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 661c99d2d4aSAlex Elder u64 previous; 662c99d2d4aSAlex Elder 663c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 664c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 665c99d2d4aSAlex Elder previous = op->extent.length; 666e5975c7cSAlex Elder 667e5975c7cSAlex Elder if (length == previous) 668e5975c7cSAlex Elder return; /* Nothing to do */ 669e5975c7cSAlex Elder BUG_ON(length > previous); 670e5975c7cSAlex Elder 671e5975c7cSAlex Elder op->extent.length = length; 672de2aa102SIlya Dryomov op->indata_len -= previous - length; 673e5975c7cSAlex Elder } 674e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 675e5975c7cSAlex Elder 6762c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 6772c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 6782c63f49aSYan, Zheng { 6792c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 6802c63f49aSYan, Zheng 6812c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 6822c63f49aSYan, Zheng 6832c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 6842c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 6852c63f49aSYan, Zheng /* dup previous one */ 6862c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 6872c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 6882c63f49aSYan, Zheng op->extent = prev_op->extent; 6892c63f49aSYan, Zheng /* adjust offset */ 6902c63f49aSYan, Zheng op->extent.offset += offset_inc; 6912c63f49aSYan, Zheng op->extent.length -= offset_inc; 6922c63f49aSYan, Zheng 6932c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 6942c63f49aSYan, Zheng op->indata_len -= offset_inc; 6952c63f49aSYan, Zheng } 6962c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 6972c63f49aSYan, Zheng 698c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 69904017e29SAlex Elder u16 opcode, const char *class, const char *method) 70033803f33SAlex Elder { 701144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 702144cba14SYan, Zheng opcode, 0); 7035f562df5SAlex Elder struct ceph_pagelist *pagelist; 70433803f33SAlex Elder size_t payload_len = 0; 70533803f33SAlex Elder size_t size; 70633803f33SAlex Elder 70733803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 70833803f33SAlex Elder 7095f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 7105f562df5SAlex Elder BUG_ON(!pagelist); 7115f562df5SAlex Elder ceph_pagelist_init(pagelist); 7125f562df5SAlex Elder 71333803f33SAlex Elder op->cls.class_name = class; 71433803f33SAlex Elder size = strlen(class); 71533803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 71633803f33SAlex Elder op->cls.class_len = size; 7175f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 71833803f33SAlex Elder payload_len += size; 71933803f33SAlex Elder 72033803f33SAlex Elder op->cls.method_name = method; 72133803f33SAlex Elder size = strlen(method); 72233803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 72333803f33SAlex Elder op->cls.method_len = size; 7245f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 72533803f33SAlex Elder payload_len += size; 72633803f33SAlex Elder 727a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 7285f562df5SAlex Elder 729de2aa102SIlya Dryomov op->indata_len = payload_len; 73033803f33SAlex Elder } 73133803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 7328c042b0dSAlex Elder 733d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 734d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 735d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 736d74b50beSYan, Zheng { 737144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 738144cba14SYan, Zheng opcode, 0); 739d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 740d74b50beSYan, Zheng size_t payload_len; 741d74b50beSYan, Zheng 742d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 743d74b50beSYan, Zheng 744d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 745d74b50beSYan, Zheng if (!pagelist) 746d74b50beSYan, Zheng return -ENOMEM; 747d74b50beSYan, Zheng 748d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 749d74b50beSYan, Zheng 750d74b50beSYan, Zheng payload_len = strlen(name); 751d74b50beSYan, Zheng op->xattr.name_len = payload_len; 752d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 753d74b50beSYan, Zheng 754d74b50beSYan, Zheng op->xattr.value_len = size; 755d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 756d74b50beSYan, Zheng payload_len += size; 757d74b50beSYan, Zheng 758d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 759d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 760d74b50beSYan, Zheng 761d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 762de2aa102SIlya Dryomov op->indata_len = payload_len; 763d74b50beSYan, Zheng return 0; 764d74b50beSYan, Zheng } 765d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 766d74b50beSYan, Zheng 767922dab61SIlya Dryomov /* 768922dab61SIlya Dryomov * @watch_opcode: CEPH_OSD_WATCH_OP_* 769922dab61SIlya Dryomov */ 770922dab61SIlya Dryomov static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, 771922dab61SIlya Dryomov u64 cookie, u8 watch_opcode) 77233803f33SAlex Elder { 773922dab61SIlya Dryomov struct ceph_osd_req_op *op; 77433803f33SAlex Elder 775922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); 77633803f33SAlex Elder op->watch.cookie = cookie; 777922dab61SIlya Dryomov op->watch.op = watch_opcode; 778922dab61SIlya Dryomov op->watch.gen = 0; 77933803f33SAlex Elder } 78033803f33SAlex Elder 781c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 782c647b8a8SIlya Dryomov unsigned int which, 783c647b8a8SIlya Dryomov u64 expected_object_size, 784c647b8a8SIlya Dryomov u64 expected_write_size) 785c647b8a8SIlya Dryomov { 786c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 787144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 788144cba14SYan, Zheng 0); 789c647b8a8SIlya Dryomov 790c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 791c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 792c647b8a8SIlya Dryomov 793c647b8a8SIlya Dryomov /* 794c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 795c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 796c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 797c647b8a8SIlya Dryomov */ 798c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 799c647b8a8SIlya Dryomov } 800c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 801c647b8a8SIlya Dryomov 80290af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 803ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 804ec9123c5SAlex Elder { 805ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 806ec9123c5SAlex Elder 807ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 808ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 809ec9123c5SAlex Elder if (length) 81090af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 811ec9123c5SAlex Elder length, osd_data->alignment); 812ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 813ec9123c5SAlex Elder BUG_ON(!length); 81490af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 815ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 816ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 81790af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 818ec9123c5SAlex Elder #endif 819ec9123c5SAlex Elder } else { 820ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 821ec9123c5SAlex Elder } 822ec9123c5SAlex Elder } 823ec9123c5SAlex Elder 824bb873b53SIlya Dryomov static u32 osd_req_encode_op(struct ceph_osd_op *dst, 825bb873b53SIlya Dryomov const struct ceph_osd_req_op *src) 8263d14c5d2SYehuda Sadeh { 827a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 828a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 829a8dd0a37SAlex Elder 830a8dd0a37SAlex Elder return 0; 831a8dd0a37SAlex Elder } 8323d14c5d2SYehuda Sadeh 833065a68f9SAlex Elder switch (src->op) { 834fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 835fbfab539SAlex Elder break; 8363d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 8373d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 838e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 839ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 840ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 841175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 842175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 8433d14c5d2SYehuda Sadeh dst->extent.truncate_size = 8443d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 8453d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 8463d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 8473d14c5d2SYehuda Sadeh break; 8483d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 8493d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 8503d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 851bb873b53SIlya Dryomov dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 8523d14c5d2SYehuda Sadeh break; 8533d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 8543d14c5d2SYehuda Sadeh break; 855a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 856a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 857922dab61SIlya Dryomov dst->watch.ver = cpu_to_le64(0); 858922dab61SIlya Dryomov dst->watch.op = src->watch.op; 859922dab61SIlya Dryomov dst->watch.gen = cpu_to_le32(src->watch.gen); 860922dab61SIlya Dryomov break; 861922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 862a40c4f10SYehuda Sadeh break; 86319079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 86419079203SIlya Dryomov dst->notify.cookie = cpu_to_le64(src->notify.cookie); 86519079203SIlya Dryomov break; 866c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 867c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 868c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 869c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 870c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 871c647b8a8SIlya Dryomov break; 872d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 873d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 874d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 875d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 876d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 877d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 878d74b50beSYan, Zheng break; 879864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 880864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 881864e9197SYan, Zheng break; 8823d14c5d2SYehuda Sadeh default: 8834c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 8848f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 8854c46459cSAlex Elder WARN_ON(1); 886a8dd0a37SAlex Elder 887a8dd0a37SAlex Elder return 0; 8883d14c5d2SYehuda Sadeh } 8897b25bf5fSIlya Dryomov 890a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 8917b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 892de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 893175face2SAlex Elder 894bb873b53SIlya Dryomov return src->indata_len; 8953d14c5d2SYehuda Sadeh } 8963d14c5d2SYehuda Sadeh 8973d14c5d2SYehuda Sadeh /* 8983d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 8993d14c5d2SYehuda Sadeh * extent as needed. 9003d14c5d2SYehuda Sadeh * 9013d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 9023d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 9033d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 9043d14c5d2SYehuda Sadeh * 9053d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 9063d14c5d2SYehuda Sadeh * data quickly. 9073d14c5d2SYehuda Sadeh */ 9083d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 9093d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 9103d14c5d2SYehuda Sadeh struct ceph_vino vino, 911715e4cd4SYan, Zheng u64 off, u64 *plen, 912715e4cd4SYan, Zheng unsigned int which, int num_ops, 9133d14c5d2SYehuda Sadeh int opcode, int flags, 9143d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 9153d14c5d2SYehuda Sadeh u32 truncate_seq, 9163d14c5d2SYehuda Sadeh u64 truncate_size, 917153e5167SAlex Elder bool use_mempool) 9183d14c5d2SYehuda Sadeh { 9193d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 92075d1c941SAlex Elder u64 objnum = 0; 92175d1c941SAlex Elder u64 objoff = 0; 92275d1c941SAlex Elder u64 objlen = 0; 9236816282dSSage Weil int r; 9243d14c5d2SYehuda Sadeh 925ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 926864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 927864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 9283d14c5d2SYehuda Sadeh 929acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 930ae7ca4a3SAlex Elder GFP_NOFS); 93113d1ad16SIlya Dryomov if (!req) { 93213d1ad16SIlya Dryomov r = -ENOMEM; 93313d1ad16SIlya Dryomov goto fail; 93413d1ad16SIlya Dryomov } 93579528734SAlex Elder 9363d14c5d2SYehuda Sadeh /* calculate max write size */ 937a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 93813d1ad16SIlya Dryomov if (r) 93913d1ad16SIlya Dryomov goto fail; 940a19dadfbSAlex Elder 941864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 942144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 943864e9197SYan, Zheng } else { 9447627151eSYan, Zheng u32 object_size = layout->object_size; 945864e9197SYan, Zheng u32 object_base = off - objoff; 946ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 947d18d1e28SAlex Elder if (truncate_size <= object_base) { 948d18d1e28SAlex Elder truncate_size = 0; 949d18d1e28SAlex Elder } else { 950d18d1e28SAlex Elder truncate_size -= object_base; 951d18d1e28SAlex Elder if (truncate_size > object_size) 952d18d1e28SAlex Elder truncate_size = object_size; 953d18d1e28SAlex Elder } 954ccca4e37SYan, Zheng } 955715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 956b0270324SAlex Elder truncate_size, truncate_seq); 957864e9197SYan, Zheng } 958d18d1e28SAlex Elder 959bb873b53SIlya Dryomov req->r_flags = flags; 9607627151eSYan, Zheng req->r_base_oloc.pool = layout->pool_id; 96130c156d9SYan, Zheng req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns); 962d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 963dbe0fc41SAlex Elder 964bb873b53SIlya Dryomov req->r_snapid = vino.snap; 965bb873b53SIlya Dryomov if (flags & CEPH_OSD_FLAG_WRITE) 966bb873b53SIlya Dryomov req->r_data_offset = off; 967bb873b53SIlya Dryomov 96813d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 96913d1ad16SIlya Dryomov if (r) 97013d1ad16SIlya Dryomov goto fail; 97113d1ad16SIlya Dryomov 9723d14c5d2SYehuda Sadeh return req; 97313d1ad16SIlya Dryomov 97413d1ad16SIlya Dryomov fail: 97513d1ad16SIlya Dryomov ceph_osdc_put_request(req); 97613d1ad16SIlya Dryomov return ERR_PTR(r); 9773d14c5d2SYehuda Sadeh } 9783d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 9793d14c5d2SYehuda Sadeh 9803d14c5d2SYehuda Sadeh /* 9813d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 9823d14c5d2SYehuda Sadeh */ 983fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 9844609245eSIlya Dryomov DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node) 9853d14c5d2SYehuda Sadeh 9860247a0cfSIlya Dryomov static bool osd_homeless(struct ceph_osd *osd) 9870247a0cfSIlya Dryomov { 9880247a0cfSIlya Dryomov return osd->o_osd == CEPH_HOMELESS_OSD; 9890247a0cfSIlya Dryomov } 9900247a0cfSIlya Dryomov 9915aea3dcdSIlya Dryomov static bool osd_registered(struct ceph_osd *osd) 9923d14c5d2SYehuda Sadeh { 9935aea3dcdSIlya Dryomov verify_osdc_locked(osd->o_osdc); 9943d14c5d2SYehuda Sadeh 9955aea3dcdSIlya Dryomov return !RB_EMPTY_NODE(&osd->o_node); 9963d14c5d2SYehuda Sadeh } 9973d14c5d2SYehuda Sadeh 9983d14c5d2SYehuda Sadeh /* 9990247a0cfSIlya Dryomov * Assumes @osd is zero-initialized. 10000247a0cfSIlya Dryomov */ 10010247a0cfSIlya Dryomov static void osd_init(struct ceph_osd *osd) 10020247a0cfSIlya Dryomov { 10030247a0cfSIlya Dryomov atomic_set(&osd->o_ref, 1); 10040247a0cfSIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 10055aea3dcdSIlya Dryomov osd->o_requests = RB_ROOT; 1006922dab61SIlya Dryomov osd->o_linger_requests = RB_ROOT; 10070247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_osd_lru); 10080247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_keepalive_item); 10090247a0cfSIlya Dryomov osd->o_incarnation = 1; 10105aea3dcdSIlya Dryomov mutex_init(&osd->lock); 10110247a0cfSIlya Dryomov } 10120247a0cfSIlya Dryomov 10130247a0cfSIlya Dryomov static void osd_cleanup(struct ceph_osd *osd) 10140247a0cfSIlya Dryomov { 10150247a0cfSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); 10165aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 1017922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 10180247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_osd_lru)); 10190247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_keepalive_item)); 10200247a0cfSIlya Dryomov 10210247a0cfSIlya Dryomov if (osd->o_auth.authorizer) { 10220247a0cfSIlya Dryomov WARN_ON(osd_homeless(osd)); 10230247a0cfSIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 10240247a0cfSIlya Dryomov } 10250247a0cfSIlya Dryomov } 10260247a0cfSIlya Dryomov 10270247a0cfSIlya Dryomov /* 10283d14c5d2SYehuda Sadeh * Track open sessions with osds. 10293d14c5d2SYehuda Sadeh */ 1030e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10313d14c5d2SYehuda Sadeh { 10323d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10333d14c5d2SYehuda Sadeh 10340247a0cfSIlya Dryomov WARN_ON(onum == CEPH_HOMELESS_OSD); 10350247a0cfSIlya Dryomov 10367a28f59bSIlya Dryomov osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); 10370247a0cfSIlya Dryomov osd_init(osd); 10383d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1039e10006f8SAlex Elder osd->o_osd = onum; 10403d14c5d2SYehuda Sadeh 1041b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10423d14c5d2SYehuda Sadeh 10433d14c5d2SYehuda Sadeh return osd; 10443d14c5d2SYehuda Sadeh } 10453d14c5d2SYehuda Sadeh 10463d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 10473d14c5d2SYehuda Sadeh { 10483d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 10493d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 10503d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 10513d14c5d2SYehuda Sadeh return osd; 10523d14c5d2SYehuda Sadeh } else { 10533d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10543d14c5d2SYehuda Sadeh return NULL; 10553d14c5d2SYehuda Sadeh } 10563d14c5d2SYehuda Sadeh } 10573d14c5d2SYehuda Sadeh 10583d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 10593d14c5d2SYehuda Sadeh { 10603d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 10613d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 1062b28ec2f3SIlya Dryomov if (atomic_dec_and_test(&osd->o_ref)) { 10630247a0cfSIlya Dryomov osd_cleanup(osd); 10643d14c5d2SYehuda Sadeh kfree(osd); 10653d14c5d2SYehuda Sadeh } 10663d14c5d2SYehuda Sadeh } 10673d14c5d2SYehuda Sadeh 1068fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1069fcd00b68SIlya Dryomov 10709dd2845cSIlya Dryomov static void __move_osd_to_lru(struct ceph_osd *osd) 10713d14c5d2SYehuda Sadeh { 10729dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 10739dd2845cSIlya Dryomov 10749dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 10753d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1076bbf37ec3SIlya Dryomov 10779dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 10783d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 10799dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 10809dd2845cSIlya Dryomov 1081a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 10823d14c5d2SYehuda Sadeh } 10833d14c5d2SYehuda Sadeh 10849dd2845cSIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd *osd) 1085bbf37ec3SIlya Dryomov { 10865aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1087922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) 10889dd2845cSIlya Dryomov __move_osd_to_lru(osd); 1089bbf37ec3SIlya Dryomov } 1090bbf37ec3SIlya Dryomov 10913d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 10923d14c5d2SYehuda Sadeh { 10939dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 10949dd2845cSIlya Dryomov 10959dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 10969dd2845cSIlya Dryomov 10979dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 10983d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 10993d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11009dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 11013d14c5d2SYehuda Sadeh } 11023d14c5d2SYehuda Sadeh 11033d14c5d2SYehuda Sadeh /* 11045aea3dcdSIlya Dryomov * Close the connection and assign any leftover requests to the 11055aea3dcdSIlya Dryomov * homeless session. 11065aea3dcdSIlya Dryomov */ 11075aea3dcdSIlya Dryomov static void close_osd(struct ceph_osd *osd) 11085aea3dcdSIlya Dryomov { 11095aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 11105aea3dcdSIlya Dryomov struct rb_node *n; 11115aea3dcdSIlya Dryomov 11125aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 11135aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11145aea3dcdSIlya Dryomov 11155aea3dcdSIlya Dryomov ceph_con_close(&osd->o_con); 11165aea3dcdSIlya Dryomov 11175aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 11185aea3dcdSIlya Dryomov struct ceph_osd_request *req = 11195aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 11205aea3dcdSIlya Dryomov 11215aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 11225aea3dcdSIlya Dryomov 11235aea3dcdSIlya Dryomov dout(" reassigning req %p tid %llu\n", req, req->r_tid); 11245aea3dcdSIlya Dryomov unlink_request(osd, req); 11255aea3dcdSIlya Dryomov link_request(&osdc->homeless_osd, req); 11265aea3dcdSIlya Dryomov } 1127922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 1128922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1129922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 1130922dab61SIlya Dryomov 1131922dab61SIlya Dryomov n = rb_next(n); /* unlink_linger() */ 1132922dab61SIlya Dryomov 1133922dab61SIlya Dryomov dout(" reassigning lreq %p linger_id %llu\n", lreq, 1134922dab61SIlya Dryomov lreq->linger_id); 1135922dab61SIlya Dryomov unlink_linger(osd, lreq); 1136922dab61SIlya Dryomov link_linger(&osdc->homeless_osd, lreq); 1137922dab61SIlya Dryomov } 11385aea3dcdSIlya Dryomov 11395aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 11405aea3dcdSIlya Dryomov erase_osd(&osdc->osds, osd); 11415aea3dcdSIlya Dryomov put_osd(osd); 11425aea3dcdSIlya Dryomov } 11435aea3dcdSIlya Dryomov 11445aea3dcdSIlya Dryomov /* 11453d14c5d2SYehuda Sadeh * reset osd connect 11463d14c5d2SYehuda Sadeh */ 11475aea3dcdSIlya Dryomov static int reopen_osd(struct ceph_osd *osd) 11483d14c5d2SYehuda Sadeh { 1149c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 11503d14c5d2SYehuda Sadeh 11515aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11525aea3dcdSIlya Dryomov 11535aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1154922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) { 11555aea3dcdSIlya Dryomov close_osd(osd); 1156c3acb181SAlex Elder return -ENODEV; 1157c3acb181SAlex Elder } 1158c3acb181SAlex Elder 11595aea3dcdSIlya Dryomov peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; 1160c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 11613d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 11625aea3dcdSIlya Dryomov struct rb_node *n; 1163c3acb181SAlex Elder 11643d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 11650b4af2e8SIlya Dryomov "letting msgr retry\n"); 11663d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 11675aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 11685aea3dcdSIlya Dryomov struct ceph_osd_request *req = 11695aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 11703d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 11715aea3dcdSIlya Dryomov } 1172c3acb181SAlex Elder 1173c3acb181SAlex Elder return -EAGAIN; 11743d14c5d2SYehuda Sadeh } 1175c3acb181SAlex Elder 1176c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1177c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1178c3acb181SAlex Elder osd->o_incarnation++; 1179c3acb181SAlex Elder 1180c3acb181SAlex Elder return 0; 11813d14c5d2SYehuda Sadeh } 11823d14c5d2SYehuda Sadeh 11835aea3dcdSIlya Dryomov static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, 11845aea3dcdSIlya Dryomov bool wrlocked) 11853d14c5d2SYehuda Sadeh { 11865aea3dcdSIlya Dryomov struct ceph_osd *osd; 11875aea3dcdSIlya Dryomov 11885aea3dcdSIlya Dryomov if (wrlocked) 11895aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 11905aea3dcdSIlya Dryomov else 11915aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 11925aea3dcdSIlya Dryomov 11935aea3dcdSIlya Dryomov if (o != CEPH_HOMELESS_OSD) 11945aea3dcdSIlya Dryomov osd = lookup_osd(&osdc->osds, o); 11955aea3dcdSIlya Dryomov else 11965aea3dcdSIlya Dryomov osd = &osdc->homeless_osd; 11975aea3dcdSIlya Dryomov if (!osd) { 11985aea3dcdSIlya Dryomov if (!wrlocked) 11995aea3dcdSIlya Dryomov return ERR_PTR(-EAGAIN); 12005aea3dcdSIlya Dryomov 12015aea3dcdSIlya Dryomov osd = create_osd(osdc, o); 12025aea3dcdSIlya Dryomov insert_osd(&osdc->osds, osd); 12035aea3dcdSIlya Dryomov ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, 12045aea3dcdSIlya Dryomov &osdc->osdmap->osd_addr[osd->o_osd]); 12055aea3dcdSIlya Dryomov } 12065aea3dcdSIlya Dryomov 12075aea3dcdSIlya Dryomov dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); 12085aea3dcdSIlya Dryomov return osd; 1209a40c4f10SYehuda Sadeh } 1210a40c4f10SYehuda Sadeh 12113d14c5d2SYehuda Sadeh /* 12125aea3dcdSIlya Dryomov * Create request <-> OSD session relation. 12135aea3dcdSIlya Dryomov * 12145aea3dcdSIlya Dryomov * @req has to be assigned a tid, @osd may be homeless. 12153d14c5d2SYehuda Sadeh */ 12165aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) 12173d14c5d2SYehuda Sadeh { 12185aea3dcdSIlya Dryomov verify_osd_locked(osd); 12195aea3dcdSIlya Dryomov WARN_ON(!req->r_tid || req->r_osd); 12205aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 122135f9f8a0SSage Weil req, req->r_tid); 12225aea3dcdSIlya Dryomov 12235aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 12245aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 12255aea3dcdSIlya Dryomov else 12265aea3dcdSIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 12275aea3dcdSIlya Dryomov 12285aea3dcdSIlya Dryomov get_osd(osd); 12295aea3dcdSIlya Dryomov insert_request(&osd->o_requests, req); 12305aea3dcdSIlya Dryomov req->r_osd = osd; 123135f9f8a0SSage Weil } 123235f9f8a0SSage Weil 12335aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) 12343d14c5d2SYehuda Sadeh { 12355aea3dcdSIlya Dryomov verify_osd_locked(osd); 12365aea3dcdSIlya Dryomov WARN_ON(req->r_osd != osd); 12375aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 12385aea3dcdSIlya Dryomov req, req->r_tid); 12395aea3dcdSIlya Dryomov 12405aea3dcdSIlya Dryomov req->r_osd = NULL; 12415aea3dcdSIlya Dryomov erase_request(&osd->o_requests, req); 12425aea3dcdSIlya Dryomov put_osd(osd); 12435aea3dcdSIlya Dryomov 12445aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 12455aea3dcdSIlya Dryomov maybe_move_osd_to_lru(osd); 12465aea3dcdSIlya Dryomov else 12475aea3dcdSIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 12483d14c5d2SYehuda Sadeh } 12493d14c5d2SYehuda Sadeh 125063244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 125163244fa1SIlya Dryomov { 125263244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 125363244fa1SIlya Dryomov } 125463244fa1SIlya Dryomov 125542c1b124SIlya Dryomov static bool have_pool_full(struct ceph_osd_client *osdc) 125642c1b124SIlya Dryomov { 125742c1b124SIlya Dryomov struct rb_node *n; 125842c1b124SIlya Dryomov 125942c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 126042c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 126142c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 126242c1b124SIlya Dryomov 126342c1b124SIlya Dryomov if (__pool_full(pi)) 126442c1b124SIlya Dryomov return true; 126542c1b124SIlya Dryomov } 126642c1b124SIlya Dryomov 126742c1b124SIlya Dryomov return false; 126842c1b124SIlya Dryomov } 126942c1b124SIlya Dryomov 12705aea3dcdSIlya Dryomov static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) 12715aea3dcdSIlya Dryomov { 12725aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 12735aea3dcdSIlya Dryomov 12745aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 12755aea3dcdSIlya Dryomov if (!pi) 12765aea3dcdSIlya Dryomov return false; 12775aea3dcdSIlya Dryomov 12785aea3dcdSIlya Dryomov return __pool_full(pi); 12795aea3dcdSIlya Dryomov } 12805aea3dcdSIlya Dryomov 12813d14c5d2SYehuda Sadeh /* 1282d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1283d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1284d29adb34SJosh Durgin */ 128563244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 128663244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 128763244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 128863244fa1SIlya Dryomov { 1289b7ec35b3SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 1290b7ec35b3SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 1291b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 129263244fa1SIlya Dryomov __pool_full(pi); 129363244fa1SIlya Dryomov 129463244fa1SIlya Dryomov WARN_ON(pi->id != t->base_oloc.pool); 129563244fa1SIlya Dryomov return (t->flags & CEPH_OSD_FLAG_READ && pauserd) || 129663244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_WRITE && pausewr); 129763244fa1SIlya Dryomov } 129863244fa1SIlya Dryomov 129963244fa1SIlya Dryomov enum calc_target_result { 130063244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 130163244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 130263244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 130363244fa1SIlya Dryomov }; 130463244fa1SIlya Dryomov 130563244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 130663244fa1SIlya Dryomov struct ceph_osd_request_target *t, 130763244fa1SIlya Dryomov u32 *last_force_resend, 130863244fa1SIlya Dryomov bool any_change) 130963244fa1SIlya Dryomov { 131063244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 131163244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 131263244fa1SIlya Dryomov struct ceph_osds up, acting; 131363244fa1SIlya Dryomov bool force_resend = false; 131463244fa1SIlya Dryomov bool need_check_tiering = false; 131563244fa1SIlya Dryomov bool need_resend = false; 1316b7ec35b3SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE); 131763244fa1SIlya Dryomov enum calc_target_result ct_res; 131863244fa1SIlya Dryomov int ret; 131963244fa1SIlya Dryomov 132063244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 132163244fa1SIlya Dryomov if (!pi) { 132263244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 132363244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 132463244fa1SIlya Dryomov goto out; 132563244fa1SIlya Dryomov } 132663244fa1SIlya Dryomov 132763244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 132863244fa1SIlya Dryomov if (last_force_resend && 132963244fa1SIlya Dryomov *last_force_resend < pi->last_force_request_resend) { 133063244fa1SIlya Dryomov *last_force_resend = pi->last_force_request_resend; 133163244fa1SIlya Dryomov force_resend = true; 133263244fa1SIlya Dryomov } else if (!last_force_resend) { 133363244fa1SIlya Dryomov force_resend = true; 133463244fa1SIlya Dryomov } 133563244fa1SIlya Dryomov } 133663244fa1SIlya Dryomov if (ceph_oid_empty(&t->target_oid) || force_resend) { 133763244fa1SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 133863244fa1SIlya Dryomov need_check_tiering = true; 133963244fa1SIlya Dryomov } 134063244fa1SIlya Dryomov if (ceph_oloc_empty(&t->target_oloc) || force_resend) { 134163244fa1SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 134263244fa1SIlya Dryomov need_check_tiering = true; 134363244fa1SIlya Dryomov } 134463244fa1SIlya Dryomov 134563244fa1SIlya Dryomov if (need_check_tiering && 134663244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 134763244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) 134863244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 134963244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) 135063244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 135163244fa1SIlya Dryomov } 135263244fa1SIlya Dryomov 135363244fa1SIlya Dryomov ret = ceph_object_locator_to_pg(osdc->osdmap, &t->target_oid, 135463244fa1SIlya Dryomov &t->target_oloc, &pgid); 135563244fa1SIlya Dryomov if (ret) { 135663244fa1SIlya Dryomov WARN_ON(ret != -ENOENT); 135763244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 135863244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 135963244fa1SIlya Dryomov goto out; 136063244fa1SIlya Dryomov } 136163244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 136263244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 136363244fa1SIlya Dryomov 136463244fa1SIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting); 136563244fa1SIlya Dryomov if (any_change && 136663244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 136763244fa1SIlya Dryomov &acting, 136863244fa1SIlya Dryomov &t->up, 136963244fa1SIlya Dryomov &up, 137063244fa1SIlya Dryomov t->size, 137163244fa1SIlya Dryomov pi->size, 137263244fa1SIlya Dryomov t->min_size, 137363244fa1SIlya Dryomov pi->min_size, 137463244fa1SIlya Dryomov t->pg_num, 137563244fa1SIlya Dryomov pi->pg_num, 137663244fa1SIlya Dryomov t->sort_bitwise, 137763244fa1SIlya Dryomov sort_bitwise, 137863244fa1SIlya Dryomov &last_pgid)) 137963244fa1SIlya Dryomov force_resend = true; 138063244fa1SIlya Dryomov 138163244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 138263244fa1SIlya Dryomov t->paused = false; 138363244fa1SIlya Dryomov need_resend = true; 138463244fa1SIlya Dryomov } 138563244fa1SIlya Dryomov 138663244fa1SIlya Dryomov if (ceph_pg_compare(&t->pgid, &pgid) || 138763244fa1SIlya Dryomov ceph_osds_changed(&t->acting, &acting, any_change) || 138863244fa1SIlya Dryomov force_resend) { 138963244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 139063244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 139163244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 139263244fa1SIlya Dryomov t->size = pi->size; 139363244fa1SIlya Dryomov t->min_size = pi->min_size; 139463244fa1SIlya Dryomov t->pg_num = pi->pg_num; 139563244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 139663244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 139763244fa1SIlya Dryomov 139863244fa1SIlya Dryomov t->osd = acting.primary; 139963244fa1SIlya Dryomov need_resend = true; 140063244fa1SIlya Dryomov } 140163244fa1SIlya Dryomov 140263244fa1SIlya Dryomov ct_res = need_resend ? CALC_TARGET_NEED_RESEND : CALC_TARGET_NO_ACTION; 140363244fa1SIlya Dryomov out: 140463244fa1SIlya Dryomov dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); 140563244fa1SIlya Dryomov return ct_res; 140663244fa1SIlya Dryomov } 140763244fa1SIlya Dryomov 1408bb873b53SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req, 1409bb873b53SIlya Dryomov struct ceph_msg *msg) 14103d14c5d2SYehuda Sadeh { 1411bb873b53SIlya Dryomov u32 data_len = 0; 1412bb873b53SIlya Dryomov int i; 14133d14c5d2SYehuda Sadeh 1414bb873b53SIlya Dryomov if (!list_empty(&msg->data)) 1415bb873b53SIlya Dryomov return; 14163d14c5d2SYehuda Sadeh 1417bb873b53SIlya Dryomov WARN_ON(msg->data_length); 1418bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1419bb873b53SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[i]; 1420bb873b53SIlya Dryomov 1421bb873b53SIlya Dryomov switch (op->op) { 1422bb873b53SIlya Dryomov /* request */ 1423bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 1424bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 1425bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 1426bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->extent.osd_data); 1427bb873b53SIlya Dryomov break; 1428bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 1429bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 1430bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 1431bb873b53SIlya Dryomov op->xattr.value_len); 1432bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->xattr.osd_data); 1433bb873b53SIlya Dryomov break; 1434922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 1435922dab61SIlya Dryomov ceph_osdc_msg_data_add(msg, 1436922dab61SIlya Dryomov &op->notify_ack.request_data); 1437922dab61SIlya Dryomov break; 1438bb873b53SIlya Dryomov 1439bb873b53SIlya Dryomov /* reply */ 1440bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 1441bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1442bb873b53SIlya Dryomov &op->raw_data_in); 1443bb873b53SIlya Dryomov break; 1444bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 1445bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1446bb873b53SIlya Dryomov &op->extent.osd_data); 1447bb873b53SIlya Dryomov break; 1448bb873b53SIlya Dryomov 1449bb873b53SIlya Dryomov /* both */ 1450bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 1451bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 1452bb873b53SIlya Dryomov op->cls.method_len + 1453bb873b53SIlya Dryomov op->cls.indata_len); 1454bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_info); 1455bb873b53SIlya Dryomov /* optional, can be NONE */ 1456bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_data); 1457bb873b53SIlya Dryomov /* optional, can be NONE */ 1458bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1459bb873b53SIlya Dryomov &op->cls.response_data); 1460bb873b53SIlya Dryomov break; 146119079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 146219079203SIlya Dryomov ceph_osdc_msg_data_add(msg, 146319079203SIlya Dryomov &op->notify.request_data); 146419079203SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 146519079203SIlya Dryomov &op->notify.response_data); 146619079203SIlya Dryomov break; 1467bb873b53SIlya Dryomov } 1468bb873b53SIlya Dryomov 1469bb873b53SIlya Dryomov data_len += op->indata_len; 1470bb873b53SIlya Dryomov } 1471bb873b53SIlya Dryomov 1472bb873b53SIlya Dryomov WARN_ON(data_len != msg->data_length); 1473bb873b53SIlya Dryomov } 1474bb873b53SIlya Dryomov 1475bb873b53SIlya Dryomov static void encode_request(struct ceph_osd_request *req, struct ceph_msg *msg) 1476bb873b53SIlya Dryomov { 1477bb873b53SIlya Dryomov void *p = msg->front.iov_base; 1478bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 1479bb873b53SIlya Dryomov u32 data_len = 0; 1480bb873b53SIlya Dryomov int i; 1481bb873b53SIlya Dryomov 1482bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 1483bb873b53SIlya Dryomov /* snapshots aren't writeable */ 1484bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 1485bb873b53SIlya Dryomov } else { 1486bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 1487bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 1488bb873b53SIlya Dryomov } 1489bb873b53SIlya Dryomov 1490bb873b53SIlya Dryomov setup_request_data(req, msg); 1491bb873b53SIlya Dryomov 1492bb873b53SIlya Dryomov ceph_encode_32(&p, 1); /* client_inc, always 1 */ 1493bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 1494bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 1495bb873b53SIlya Dryomov ceph_encode_timespec(p, &req->r_mtime); 1496bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 1497bb873b53SIlya Dryomov /* aka reassert_version */ 1498bb873b53SIlya Dryomov memcpy(p, &req->r_replay_version, sizeof(req->r_replay_version)); 1499bb873b53SIlya Dryomov p += sizeof(req->r_replay_version); 1500bb873b53SIlya Dryomov 1501bb873b53SIlya Dryomov /* oloc */ 150230c156d9SYan, Zheng ceph_start_encoding(&p, 5, 4, 150330c156d9SYan, Zheng ceph_oloc_encoding_size(&req->r_t.target_oloc)); 1504bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_t.target_oloc.pool); 1505bb873b53SIlya Dryomov ceph_encode_32(&p, -1); /* preferred */ 1506bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* key len */ 150730c156d9SYan, Zheng if (req->r_t.target_oloc.pool_ns) 150830c156d9SYan, Zheng ceph_encode_string(&p, end, req->r_t.target_oloc.pool_ns->str, 150930c156d9SYan, Zheng req->r_t.target_oloc.pool_ns->len); 151030c156d9SYan, Zheng else 151130c156d9SYan, Zheng ceph_encode_32(&p, 0); 1512bb873b53SIlya Dryomov 1513bb873b53SIlya Dryomov /* pgid */ 1514bb873b53SIlya Dryomov ceph_encode_8(&p, 1); 1515a66dd383SIlya Dryomov ceph_encode_64(&p, req->r_t.pgid.pool); 1516a66dd383SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); 1517bb873b53SIlya Dryomov ceph_encode_32(&p, -1); /* preferred */ 15182169aea6SSage Weil 1519bb873b53SIlya Dryomov /* oid */ 1520bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_t.target_oid.name_len); 1521bb873b53SIlya Dryomov memcpy(p, req->r_t.target_oid.name, req->r_t.target_oid.name_len); 1522bb873b53SIlya Dryomov p += req->r_t.target_oid.name_len; 1523bb873b53SIlya Dryomov 1524bb873b53SIlya Dryomov /* ops, can imply data */ 1525bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 1526bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1527bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 1528bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 1529bb873b53SIlya Dryomov } 1530bb873b53SIlya Dryomov 1531bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 1532bb873b53SIlya Dryomov if (req->r_snapc) { 1533bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 1534bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 1535bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 1536bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 1537bb873b53SIlya Dryomov } else { 1538bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 1539bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 1540bb873b53SIlya Dryomov } 1541bb873b53SIlya Dryomov 1542bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 1543bb873b53SIlya Dryomov 1544bb873b53SIlya Dryomov BUG_ON(p > end); 1545bb873b53SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 1546bb873b53SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 1547bb873b53SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 1548bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 1549bb873b53SIlya Dryomov /* 1550bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 1551bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 1552bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 1553bb873b53SIlya Dryomov */ 1554bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 1555bb873b53SIlya Dryomov 15564a3262b1SIlya Dryomov dout("%s req %p oid %s oid_len %d front %zu data %u\n", __func__, 15574a3262b1SIlya Dryomov req, req->r_t.target_oid.name, req->r_t.target_oid.name_len, 15584a3262b1SIlya Dryomov msg->front.iov_len, data_len); 1559bb873b53SIlya Dryomov } 1560bb873b53SIlya Dryomov 1561bb873b53SIlya Dryomov /* 1562bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 1563bb873b53SIlya Dryomov */ 1564bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 1565bb873b53SIlya Dryomov { 1566bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 1567bb873b53SIlya Dryomov 15685aea3dcdSIlya Dryomov verify_osd_locked(osd); 1569bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 1570bb873b53SIlya Dryomov 15715aea3dcdSIlya Dryomov /* 15725aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 15735aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 15745aea3dcdSIlya Dryomov */ 15755aea3dcdSIlya Dryomov if (req->r_sent) 15765aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 15775aea3dcdSIlya Dryomov 1578bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 1579bb873b53SIlya Dryomov if (req->r_attempts) 1580bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 1581bb873b53SIlya Dryomov else 1582bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 1583bb873b53SIlya Dryomov 1584bb873b53SIlya Dryomov encode_request(req, req->r_request); 1585bb873b53SIlya Dryomov 1586bb873b53SIlya Dryomov dout("%s req %p tid %llu to pg %llu.%x osd%d flags 0x%x attempt %d\n", 1587bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 1588bb873b53SIlya Dryomov req->r_t.osd, req->r_flags, req->r_attempts); 1589bb873b53SIlya Dryomov 1590bb873b53SIlya Dryomov req->r_t.paused = false; 15913d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1592bb873b53SIlya Dryomov req->r_attempts++; 15933d14c5d2SYehuda Sadeh 1594bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 1595bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 1596bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 15973d14c5d2SYehuda Sadeh } 15983d14c5d2SYehuda Sadeh 159942c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 160042c1b124SIlya Dryomov { 160142c1b124SIlya Dryomov bool continuous = false; 160242c1b124SIlya Dryomov 16035aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 160442c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 160542c1b124SIlya Dryomov 1606b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 1607b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) || 1608b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 160942c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 161042c1b124SIlya Dryomov continuous = true; 161142c1b124SIlya Dryomov } else { 161242c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 161342c1b124SIlya Dryomov } 161442c1b124SIlya Dryomov 161542c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 161642c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 161742c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 161842c1b124SIlya Dryomov } 161942c1b124SIlya Dryomov 16204609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req); 16214609245eSIlya Dryomov 16225aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 16230bbfdfe8SIlya Dryomov { 16245aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 16255aea3dcdSIlya Dryomov struct ceph_osd *osd; 16264609245eSIlya Dryomov enum calc_target_result ct_res; 16275aea3dcdSIlya Dryomov bool need_send = false; 16285aea3dcdSIlya Dryomov bool promoted = false; 16290bbfdfe8SIlya Dryomov 16305aea3dcdSIlya Dryomov WARN_ON(req->r_tid || req->r_got_reply); 16315aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 16325aea3dcdSIlya Dryomov 16335aea3dcdSIlya Dryomov again: 16344609245eSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, &req->r_last_force_resend, false); 16354609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked) 16364609245eSIlya Dryomov goto promote; 16374609245eSIlya Dryomov 16385aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 16395aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 16405aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 16415aea3dcdSIlya Dryomov goto promote; 16425aea3dcdSIlya Dryomov } 16435aea3dcdSIlya Dryomov 16445aea3dcdSIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 1645b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) { 16465aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 16475aea3dcdSIlya Dryomov req->r_t.paused = true; 16485aea3dcdSIlya Dryomov maybe_request_map(osdc); 16495aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 1650b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 16515aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 16525aea3dcdSIlya Dryomov req->r_t.paused = true; 16535aea3dcdSIlya Dryomov maybe_request_map(osdc); 16545aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 16555aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 16565aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 1657b7ec35b3SIlya Dryomov (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 16585aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 16595aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 16605aea3dcdSIlya Dryomov pr_warn_ratelimited("FULL or reached pool quota\n"); 16615aea3dcdSIlya Dryomov req->r_t.paused = true; 16625aea3dcdSIlya Dryomov maybe_request_map(osdc); 16635aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 16645aea3dcdSIlya Dryomov need_send = true; 16650bbfdfe8SIlya Dryomov } else { 16665aea3dcdSIlya Dryomov maybe_request_map(osdc); 16670bbfdfe8SIlya Dryomov } 16680bbfdfe8SIlya Dryomov 16695aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 16705aea3dcdSIlya Dryomov /* 16715aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 16725aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 16735aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 16745aea3dcdSIlya Dryomov */ 16755aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 16765aea3dcdSIlya Dryomov link_request(osd, req); 16775aea3dcdSIlya Dryomov if (need_send) 16785aea3dcdSIlya Dryomov send_request(req); 16795aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 16805aea3dcdSIlya Dryomov 16814609245eSIlya Dryomov if (ct_res == CALC_TARGET_POOL_DNE) 16824609245eSIlya Dryomov send_map_check(req); 16834609245eSIlya Dryomov 16845aea3dcdSIlya Dryomov if (promoted) 16855aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 16865aea3dcdSIlya Dryomov return; 16875aea3dcdSIlya Dryomov 16885aea3dcdSIlya Dryomov promote: 16895aea3dcdSIlya Dryomov up_read(&osdc->lock); 16905aea3dcdSIlya Dryomov down_write(&osdc->lock); 16915aea3dcdSIlya Dryomov wrlocked = true; 16925aea3dcdSIlya Dryomov promoted = true; 16935aea3dcdSIlya Dryomov goto again; 16940bbfdfe8SIlya Dryomov } 16950bbfdfe8SIlya Dryomov 16965aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 16975aea3dcdSIlya Dryomov { 16985aea3dcdSIlya Dryomov unsigned int mask = CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK; 16995aea3dcdSIlya Dryomov 17005aea3dcdSIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_READ) { 17015aea3dcdSIlya Dryomov WARN_ON(req->r_flags & mask); 17025aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ACK; 17035aea3dcdSIlya Dryomov } else if (req->r_flags & CEPH_OSD_FLAG_WRITE) 17045aea3dcdSIlya Dryomov WARN_ON(!(req->r_flags & mask)); 17055aea3dcdSIlya Dryomov else 17065aea3dcdSIlya Dryomov WARN_ON(1); 17075aea3dcdSIlya Dryomov 17085aea3dcdSIlya Dryomov WARN_ON(req->r_unsafe_callback && (req->r_flags & mask) != mask); 17095aea3dcdSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 17105aea3dcdSIlya Dryomov } 17115aea3dcdSIlya Dryomov 17125aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 17135aea3dcdSIlya Dryomov { 17145aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 17155aea3dcdSIlya Dryomov account_request(req); 17165aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 17175aea3dcdSIlya Dryomov } 17185aea3dcdSIlya Dryomov 17195aea3dcdSIlya Dryomov static void __finish_request(struct ceph_osd_request *req) 17205aea3dcdSIlya Dryomov { 17215aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 17225aea3dcdSIlya Dryomov struct ceph_osd *osd = req->r_osd; 17235aea3dcdSIlya Dryomov 17245aea3dcdSIlya Dryomov verify_osd_locked(osd); 17255aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 17265aea3dcdSIlya Dryomov 17274609245eSIlya Dryomov WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid)); 17285aea3dcdSIlya Dryomov unlink_request(osd, req); 17295aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 17305aea3dcdSIlya Dryomov 17315aea3dcdSIlya Dryomov /* 17325aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 17335aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 17345aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 17355aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 17365aea3dcdSIlya Dryomov */ 17375aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 17385aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 17395aea3dcdSIlya Dryomov } 17405aea3dcdSIlya Dryomov 17415aea3dcdSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 17425aea3dcdSIlya Dryomov { 17435aea3dcdSIlya Dryomov __finish_request(req); 17445aea3dcdSIlya Dryomov ceph_osdc_put_request(req); 17450bbfdfe8SIlya Dryomov } 17460bbfdfe8SIlya Dryomov 1747fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 1748fe5da05eSIlya Dryomov { 1749fe5da05eSIlya Dryomov if (req->r_callback) 1750fe5da05eSIlya Dryomov req->r_callback(req); 1751fe5da05eSIlya Dryomov else 1752fe5da05eSIlya Dryomov complete_all(&req->r_completion); 1753fe5da05eSIlya Dryomov } 1754fe5da05eSIlya Dryomov 17554609245eSIlya Dryomov /* 17564609245eSIlya Dryomov * Note that this is open-coded in handle_reply(), which has to deal 17574609245eSIlya Dryomov * with ack vs commit, dup acks, etc. 17584609245eSIlya Dryomov */ 17594609245eSIlya Dryomov static void complete_request(struct ceph_osd_request *req, int err) 17604609245eSIlya Dryomov { 17614609245eSIlya Dryomov dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err); 17624609245eSIlya Dryomov 17634609245eSIlya Dryomov req->r_result = err; 17644609245eSIlya Dryomov __finish_request(req); 17654609245eSIlya Dryomov __complete_request(req); 17664609245eSIlya Dryomov complete_all(&req->r_safe_completion); 17674609245eSIlya Dryomov ceph_osdc_put_request(req); 17684609245eSIlya Dryomov } 17694609245eSIlya Dryomov 17704609245eSIlya Dryomov static void cancel_map_check(struct ceph_osd_request *req) 17714609245eSIlya Dryomov { 17724609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 17734609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 17744609245eSIlya Dryomov 17754609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 17764609245eSIlya Dryomov 17774609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 17784609245eSIlya Dryomov if (!lookup_req) 17794609245eSIlya Dryomov return; 17804609245eSIlya Dryomov 17814609245eSIlya Dryomov WARN_ON(lookup_req != req); 17824609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 17834609245eSIlya Dryomov ceph_osdc_put_request(req); 17844609245eSIlya Dryomov } 17854609245eSIlya Dryomov 17865aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 17875aea3dcdSIlya Dryomov { 17885aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 17895aea3dcdSIlya Dryomov 17904609245eSIlya Dryomov cancel_map_check(req); 17915aea3dcdSIlya Dryomov finish_request(req); 17925aea3dcdSIlya Dryomov } 17935aea3dcdSIlya Dryomov 17944609245eSIlya Dryomov static void check_pool_dne(struct ceph_osd_request *req) 17954609245eSIlya Dryomov { 17964609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 17974609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 17984609245eSIlya Dryomov 17994609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 18004609245eSIlya Dryomov WARN_ON(!map->epoch); 18014609245eSIlya Dryomov 18024609245eSIlya Dryomov if (req->r_attempts) { 18034609245eSIlya Dryomov /* 18044609245eSIlya Dryomov * We sent a request earlier, which means that 18054609245eSIlya Dryomov * previously the pool existed, and now it does not 18064609245eSIlya Dryomov * (i.e., it was deleted). 18074609245eSIlya Dryomov */ 18084609245eSIlya Dryomov req->r_map_dne_bound = map->epoch; 18094609245eSIlya Dryomov dout("%s req %p tid %llu pool disappeared\n", __func__, req, 18104609245eSIlya Dryomov req->r_tid); 18114609245eSIlya Dryomov } else { 18124609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__, 18134609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, map->epoch); 18144609245eSIlya Dryomov } 18154609245eSIlya Dryomov 18164609245eSIlya Dryomov if (req->r_map_dne_bound) { 18174609245eSIlya Dryomov if (map->epoch >= req->r_map_dne_bound) { 18184609245eSIlya Dryomov /* we had a new enough map */ 18194609245eSIlya Dryomov pr_info_ratelimited("tid %llu pool does not exist\n", 18204609245eSIlya Dryomov req->r_tid); 18214609245eSIlya Dryomov complete_request(req, -ENOENT); 18224609245eSIlya Dryomov } 18234609245eSIlya Dryomov } else { 18244609245eSIlya Dryomov send_map_check(req); 18254609245eSIlya Dryomov } 18264609245eSIlya Dryomov } 18274609245eSIlya Dryomov 18284609245eSIlya Dryomov static void map_check_cb(struct ceph_mon_generic_request *greq) 18294609245eSIlya Dryomov { 18304609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 18314609245eSIlya Dryomov struct ceph_osd_request *req; 18324609245eSIlya Dryomov u64 tid = greq->private_data; 18334609245eSIlya Dryomov 18344609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 18354609245eSIlya Dryomov 18364609245eSIlya Dryomov down_write(&osdc->lock); 18374609245eSIlya Dryomov req = lookup_request_mc(&osdc->map_checks, tid); 18384609245eSIlya Dryomov if (!req) { 18394609245eSIlya Dryomov dout("%s tid %llu dne\n", __func__, tid); 18404609245eSIlya Dryomov goto out_unlock; 18414609245eSIlya Dryomov } 18424609245eSIlya Dryomov 18434609245eSIlya Dryomov dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__, 18444609245eSIlya Dryomov req, req->r_tid, req->r_map_dne_bound, greq->u.newest); 18454609245eSIlya Dryomov if (!req->r_map_dne_bound) 18464609245eSIlya Dryomov req->r_map_dne_bound = greq->u.newest; 18474609245eSIlya Dryomov erase_request_mc(&osdc->map_checks, req); 18484609245eSIlya Dryomov check_pool_dne(req); 18494609245eSIlya Dryomov 18504609245eSIlya Dryomov ceph_osdc_put_request(req); 18514609245eSIlya Dryomov out_unlock: 18524609245eSIlya Dryomov up_write(&osdc->lock); 18534609245eSIlya Dryomov } 18544609245eSIlya Dryomov 18554609245eSIlya Dryomov static void send_map_check(struct ceph_osd_request *req) 18564609245eSIlya Dryomov { 18574609245eSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 18584609245eSIlya Dryomov struct ceph_osd_request *lookup_req; 18594609245eSIlya Dryomov int ret; 18604609245eSIlya Dryomov 18614609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 18624609245eSIlya Dryomov 18634609245eSIlya Dryomov lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid); 18644609245eSIlya Dryomov if (lookup_req) { 18654609245eSIlya Dryomov WARN_ON(lookup_req != req); 18664609245eSIlya Dryomov return; 18674609245eSIlya Dryomov } 18684609245eSIlya Dryomov 18694609245eSIlya Dryomov ceph_osdc_get_request(req); 18704609245eSIlya Dryomov insert_request_mc(&osdc->map_checks, req); 18714609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 18724609245eSIlya Dryomov map_check_cb, req->r_tid); 18734609245eSIlya Dryomov WARN_ON(ret); 18744609245eSIlya Dryomov } 18754609245eSIlya Dryomov 18760bbfdfe8SIlya Dryomov /* 1877922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 1878922dab61SIlya Dryomov */ 1879922dab61SIlya Dryomov static void linger_release(struct kref *kref) 1880922dab61SIlya Dryomov { 1881922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1882922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 1883922dab61SIlya Dryomov 1884922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 1885922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 1886922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 1887922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 18884609245eSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node)); 1889922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 1890b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lreq->pending_lworks)); 1891922dab61SIlya Dryomov WARN_ON(lreq->osd); 1892922dab61SIlya Dryomov 1893922dab61SIlya Dryomov if (lreq->reg_req) 1894922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 1895922dab61SIlya Dryomov if (lreq->ping_req) 1896922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 1897922dab61SIlya Dryomov target_destroy(&lreq->t); 1898922dab61SIlya Dryomov kfree(lreq); 1899922dab61SIlya Dryomov } 1900922dab61SIlya Dryomov 1901922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 1902922dab61SIlya Dryomov { 1903922dab61SIlya Dryomov if (lreq) 1904922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 1905922dab61SIlya Dryomov } 1906922dab61SIlya Dryomov 1907922dab61SIlya Dryomov static struct ceph_osd_linger_request * 1908922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 1909922dab61SIlya Dryomov { 1910922dab61SIlya Dryomov kref_get(&lreq->kref); 1911922dab61SIlya Dryomov return lreq; 1912922dab61SIlya Dryomov } 1913922dab61SIlya Dryomov 1914922dab61SIlya Dryomov static struct ceph_osd_linger_request * 1915922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 1916922dab61SIlya Dryomov { 1917922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 1918922dab61SIlya Dryomov 1919922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 1920922dab61SIlya Dryomov if (!lreq) 1921922dab61SIlya Dryomov return NULL; 1922922dab61SIlya Dryomov 1923922dab61SIlya Dryomov kref_init(&lreq->kref); 1924922dab61SIlya Dryomov mutex_init(&lreq->lock); 1925922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 1926922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 19274609245eSIlya Dryomov RB_CLEAR_NODE(&lreq->mc_node); 1928922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 1929b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lreq->pending_lworks); 1930922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 193119079203SIlya Dryomov init_completion(&lreq->notify_finish_wait); 1932922dab61SIlya Dryomov 1933922dab61SIlya Dryomov lreq->osdc = osdc; 1934922dab61SIlya Dryomov target_init(&lreq->t); 1935922dab61SIlya Dryomov 1936922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 1937922dab61SIlya Dryomov return lreq; 1938922dab61SIlya Dryomov } 1939922dab61SIlya Dryomov 1940922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 1941922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 19424609245eSIlya Dryomov DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node) 1943922dab61SIlya Dryomov 1944922dab61SIlya Dryomov /* 1945922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 1946922dab61SIlya Dryomov * 1947922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 1948922dab61SIlya Dryomov */ 1949922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 1950922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 1951922dab61SIlya Dryomov { 1952922dab61SIlya Dryomov verify_osd_locked(osd); 1953922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 1954922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 1955922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 1956922dab61SIlya Dryomov 1957922dab61SIlya Dryomov if (!osd_homeless(osd)) 1958922dab61SIlya Dryomov __remove_osd_from_lru(osd); 1959922dab61SIlya Dryomov else 1960922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 1961922dab61SIlya Dryomov 1962922dab61SIlya Dryomov get_osd(osd); 1963922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 1964922dab61SIlya Dryomov lreq->osd = osd; 1965922dab61SIlya Dryomov } 1966922dab61SIlya Dryomov 1967922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 1968922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 1969922dab61SIlya Dryomov { 1970922dab61SIlya Dryomov verify_osd_locked(osd); 1971922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 1972922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 1973922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 1974922dab61SIlya Dryomov 1975922dab61SIlya Dryomov lreq->osd = NULL; 1976922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 1977922dab61SIlya Dryomov put_osd(osd); 1978922dab61SIlya Dryomov 1979922dab61SIlya Dryomov if (!osd_homeless(osd)) 1980922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 1981922dab61SIlya Dryomov else 1982922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 1983922dab61SIlya Dryomov } 1984922dab61SIlya Dryomov 1985922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 1986922dab61SIlya Dryomov { 1987922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 1988922dab61SIlya Dryomov 1989922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 1990922dab61SIlya Dryomov } 1991922dab61SIlya Dryomov 1992922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 1993922dab61SIlya Dryomov { 1994922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 1995922dab61SIlya Dryomov bool registered; 1996922dab61SIlya Dryomov 1997922dab61SIlya Dryomov down_read(&osdc->lock); 1998922dab61SIlya Dryomov registered = __linger_registered(lreq); 1999922dab61SIlya Dryomov up_read(&osdc->lock); 2000922dab61SIlya Dryomov 2001922dab61SIlya Dryomov return registered; 2002922dab61SIlya Dryomov } 2003922dab61SIlya Dryomov 2004922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 2005922dab61SIlya Dryomov { 2006922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2007922dab61SIlya Dryomov 2008922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2009922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 2010922dab61SIlya Dryomov 2011922dab61SIlya Dryomov linger_get(lreq); 2012922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 2013922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 2014922dab61SIlya Dryomov } 2015922dab61SIlya Dryomov 2016922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 2017922dab61SIlya Dryomov { 2018922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2019922dab61SIlya Dryomov 2020922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 2021922dab61SIlya Dryomov 2022922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 2023922dab61SIlya Dryomov linger_put(lreq); 2024922dab61SIlya Dryomov } 2025922dab61SIlya Dryomov 2026922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 2027922dab61SIlya Dryomov { 2028922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2029922dab61SIlya Dryomov 2030922dab61SIlya Dryomov WARN_ON(!req->r_linger); 2031922dab61SIlya Dryomov cancel_request(req); 2032922dab61SIlya Dryomov linger_put(lreq); 2033922dab61SIlya Dryomov } 2034922dab61SIlya Dryomov 2035922dab61SIlya Dryomov struct linger_work { 2036922dab61SIlya Dryomov struct work_struct work; 2037922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 2038b07d3c4bSIlya Dryomov struct list_head pending_item; 2039b07d3c4bSIlya Dryomov unsigned long queued_stamp; 2040922dab61SIlya Dryomov 2041922dab61SIlya Dryomov union { 2042922dab61SIlya Dryomov struct { 2043922dab61SIlya Dryomov u64 notify_id; 2044922dab61SIlya Dryomov u64 notifier_id; 2045922dab61SIlya Dryomov void *payload; /* points into @msg front */ 2046922dab61SIlya Dryomov size_t payload_len; 2047922dab61SIlya Dryomov 2048922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 2049922dab61SIlya Dryomov } notify; 2050922dab61SIlya Dryomov struct { 2051922dab61SIlya Dryomov int err; 2052922dab61SIlya Dryomov } error; 2053922dab61SIlya Dryomov }; 2054922dab61SIlya Dryomov }; 2055922dab61SIlya Dryomov 2056922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 2057922dab61SIlya Dryomov work_func_t workfn) 2058922dab61SIlya Dryomov { 2059922dab61SIlya Dryomov struct linger_work *lwork; 2060922dab61SIlya Dryomov 2061922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 2062922dab61SIlya Dryomov if (!lwork) 2063922dab61SIlya Dryomov return NULL; 2064922dab61SIlya Dryomov 2065922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 2066b07d3c4bSIlya Dryomov INIT_LIST_HEAD(&lwork->pending_item); 2067922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 2068922dab61SIlya Dryomov 2069922dab61SIlya Dryomov return lwork; 2070922dab61SIlya Dryomov } 2071922dab61SIlya Dryomov 2072922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 2073922dab61SIlya Dryomov { 2074922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2075922dab61SIlya Dryomov 2076b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 2077b07d3c4bSIlya Dryomov list_del(&lwork->pending_item); 2078b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 2079b07d3c4bSIlya Dryomov 2080922dab61SIlya Dryomov linger_put(lreq); 2081922dab61SIlya Dryomov kfree(lwork); 2082922dab61SIlya Dryomov } 2083922dab61SIlya Dryomov 2084922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 2085922dab61SIlya Dryomov { 2086922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2087922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2088922dab61SIlya Dryomov 2089922dab61SIlya Dryomov verify_lreq_locked(lreq); 2090b07d3c4bSIlya Dryomov WARN_ON(!list_empty(&lwork->pending_item)); 2091b07d3c4bSIlya Dryomov 2092b07d3c4bSIlya Dryomov lwork->queued_stamp = jiffies; 2093b07d3c4bSIlya Dryomov list_add_tail(&lwork->pending_item, &lreq->pending_lworks); 2094922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 2095922dab61SIlya Dryomov } 2096922dab61SIlya Dryomov 2097922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 2098922dab61SIlya Dryomov { 2099922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2100922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2101922dab61SIlya Dryomov 2102922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2103922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2104922dab61SIlya Dryomov goto out; 2105922dab61SIlya Dryomov } 2106922dab61SIlya Dryomov 210719079203SIlya Dryomov WARN_ON(!lreq->is_watch); 2108922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 2109922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 2110922dab61SIlya Dryomov lwork->notify.payload_len); 2111922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 2112922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 2113922dab61SIlya Dryomov lwork->notify.payload_len); 2114922dab61SIlya Dryomov 2115922dab61SIlya Dryomov out: 2116922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 2117922dab61SIlya Dryomov lwork_free(lwork); 2118922dab61SIlya Dryomov } 2119922dab61SIlya Dryomov 2120922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 2121922dab61SIlya Dryomov { 2122922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 2123922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 2124922dab61SIlya Dryomov 2125922dab61SIlya Dryomov if (!linger_registered(lreq)) { 2126922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 2127922dab61SIlya Dryomov goto out; 2128922dab61SIlya Dryomov } 2129922dab61SIlya Dryomov 2130922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 2131922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 2132922dab61SIlya Dryomov 2133922dab61SIlya Dryomov out: 2134922dab61SIlya Dryomov lwork_free(lwork); 2135922dab61SIlya Dryomov } 2136922dab61SIlya Dryomov 2137922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 2138922dab61SIlya Dryomov { 2139922dab61SIlya Dryomov struct linger_work *lwork; 2140922dab61SIlya Dryomov 2141922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 2142922dab61SIlya Dryomov if (!lwork) { 2143922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 2144922dab61SIlya Dryomov return; 2145922dab61SIlya Dryomov } 2146922dab61SIlya Dryomov 2147922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 2148922dab61SIlya Dryomov lwork_queue(lwork); 2149922dab61SIlya Dryomov } 2150922dab61SIlya Dryomov 2151922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 2152922dab61SIlya Dryomov int result) 2153922dab61SIlya Dryomov { 2154922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 2155922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 2156922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 2157922dab61SIlya Dryomov } 2158922dab61SIlya Dryomov } 2159922dab61SIlya Dryomov 2160922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 2161922dab61SIlya Dryomov { 2162922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2163922dab61SIlya Dryomov 2164922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2165922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 2166922dab61SIlya Dryomov lreq->linger_id, req->r_result); 2167922dab61SIlya Dryomov WARN_ON(!__linger_registered(lreq)); 2168922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 2169922dab61SIlya Dryomov lreq->committed = true; 2170922dab61SIlya Dryomov 217119079203SIlya Dryomov if (!lreq->is_watch) { 217219079203SIlya Dryomov struct ceph_osd_data *osd_data = 217319079203SIlya Dryomov osd_req_op_data(req, 0, notify, response_data); 217419079203SIlya Dryomov void *p = page_address(osd_data->pages[0]); 217519079203SIlya Dryomov 217619079203SIlya Dryomov WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || 217719079203SIlya Dryomov osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); 217819079203SIlya Dryomov 217919079203SIlya Dryomov /* make note of the notify_id */ 218019079203SIlya Dryomov if (req->r_ops[0].outdata_len >= sizeof(u64)) { 218119079203SIlya Dryomov lreq->notify_id = ceph_decode_64(&p); 218219079203SIlya Dryomov dout("lreq %p notify_id %llu\n", lreq, 218319079203SIlya Dryomov lreq->notify_id); 218419079203SIlya Dryomov } else { 218519079203SIlya Dryomov dout("lreq %p no notify_id\n", lreq); 218619079203SIlya Dryomov } 218719079203SIlya Dryomov } 218819079203SIlya Dryomov 2189922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2190922dab61SIlya Dryomov linger_put(lreq); 2191922dab61SIlya Dryomov } 2192922dab61SIlya Dryomov 2193922dab61SIlya Dryomov static int normalize_watch_error(int err) 2194922dab61SIlya Dryomov { 2195922dab61SIlya Dryomov /* 2196922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 2197922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 2198922dab61SIlya Dryomov * the delete appear the same to the user. 2199922dab61SIlya Dryomov */ 2200922dab61SIlya Dryomov if (err == -ENOENT) 2201922dab61SIlya Dryomov err = -ENOTCONN; 2202922dab61SIlya Dryomov 2203922dab61SIlya Dryomov return err; 2204922dab61SIlya Dryomov } 2205922dab61SIlya Dryomov 2206922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 2207922dab61SIlya Dryomov { 2208922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2209922dab61SIlya Dryomov 2210922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2211922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 2212922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 2213922dab61SIlya Dryomov if (req->r_result < 0) { 2214922dab61SIlya Dryomov if (!lreq->last_error) { 2215922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2216922dab61SIlya Dryomov queue_watch_error(lreq); 2217922dab61SIlya Dryomov } 2218922dab61SIlya Dryomov } 2219922dab61SIlya Dryomov 2220922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2221922dab61SIlya Dryomov linger_put(lreq); 2222922dab61SIlya Dryomov } 2223922dab61SIlya Dryomov 2224922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 2225922dab61SIlya Dryomov { 2226922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->reg_req; 2227922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2228922dab61SIlya Dryomov 2229922dab61SIlya Dryomov verify_osdc_wrlocked(req->r_osdc); 2230922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2231922dab61SIlya Dryomov 2232922dab61SIlya Dryomov if (req->r_osd) 2233922dab61SIlya Dryomov cancel_linger_request(req); 2234922dab61SIlya Dryomov 2235922dab61SIlya Dryomov request_reinit(req); 2236922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 2237922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 2238922dab61SIlya Dryomov req->r_flags = lreq->t.flags; 2239922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 2240922dab61SIlya Dryomov 2241922dab61SIlya Dryomov mutex_lock(&lreq->lock); 224219079203SIlya Dryomov if (lreq->is_watch && lreq->committed) { 2243922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2244922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id); 2245922dab61SIlya Dryomov op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; 2246922dab61SIlya Dryomov op->watch.gen = ++lreq->register_gen; 2247922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 2248922dab61SIlya Dryomov op->watch.gen); 2249922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 2250922dab61SIlya Dryomov } else { 225119079203SIlya Dryomov if (!lreq->is_watch) 225219079203SIlya Dryomov lreq->notify_id = 0; 225319079203SIlya Dryomov else 2254922dab61SIlya Dryomov WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); 2255922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 2256922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 2257922dab61SIlya Dryomov } 2258922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2259922dab61SIlya Dryomov 2260922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2261922dab61SIlya Dryomov req->r_linger = true; 2262922dab61SIlya Dryomov 2263922dab61SIlya Dryomov submit_request(req, true); 2264922dab61SIlya Dryomov } 2265922dab61SIlya Dryomov 2266922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 2267922dab61SIlya Dryomov { 2268922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2269922dab61SIlya Dryomov 2270922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2271922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 2272922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 2273922dab61SIlya Dryomov lreq->last_error); 2274922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 2275b07d3c4bSIlya Dryomov if (!req->r_result) { 2276b07d3c4bSIlya Dryomov lreq->watch_valid_thru = lreq->ping_sent; 2277b07d3c4bSIlya Dryomov } else if (!lreq->last_error) { 2278922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2279922dab61SIlya Dryomov queue_watch_error(lreq); 2280922dab61SIlya Dryomov } 2281922dab61SIlya Dryomov } else { 2282922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 2283922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 2284922dab61SIlya Dryomov } 2285922dab61SIlya Dryomov 2286922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2287922dab61SIlya Dryomov linger_put(lreq); 2288922dab61SIlya Dryomov } 2289922dab61SIlya Dryomov 2290922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 2291922dab61SIlya Dryomov { 2292922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2293922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->ping_req; 2294922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2295922dab61SIlya Dryomov 2296b7ec35b3SIlya Dryomov if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) { 2297922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 2298922dab61SIlya Dryomov return; 2299922dab61SIlya Dryomov } 2300922dab61SIlya Dryomov 2301922dab61SIlya Dryomov lreq->ping_sent = jiffies; 2302922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 2303922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 2304922dab61SIlya Dryomov lreq->register_gen); 2305922dab61SIlya Dryomov 2306922dab61SIlya Dryomov if (req->r_osd) 2307922dab61SIlya Dryomov cancel_linger_request(req); 2308922dab61SIlya Dryomov 2309922dab61SIlya Dryomov request_reinit(req); 2310922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 2311922dab61SIlya Dryomov 2312922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2313922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id || 2314922dab61SIlya Dryomov op->watch.op != CEPH_OSD_WATCH_OP_PING); 2315922dab61SIlya Dryomov op->watch.gen = lreq->register_gen; 2316922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 2317922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2318922dab61SIlya Dryomov req->r_linger = true; 2319922dab61SIlya Dryomov 2320922dab61SIlya Dryomov ceph_osdc_get_request(req); 2321922dab61SIlya Dryomov account_request(req); 2322922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 2323922dab61SIlya Dryomov link_request(lreq->osd, req); 2324922dab61SIlya Dryomov send_request(req); 2325922dab61SIlya Dryomov } 2326922dab61SIlya Dryomov 2327922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 2328922dab61SIlya Dryomov { 2329922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2330922dab61SIlya Dryomov struct ceph_osd *osd; 2331922dab61SIlya Dryomov 2332922dab61SIlya Dryomov calc_target(osdc, &lreq->t, &lreq->last_force_resend, false); 2333922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 2334922dab61SIlya Dryomov link_linger(osd, lreq); 2335922dab61SIlya Dryomov 2336922dab61SIlya Dryomov send_linger(lreq); 2337922dab61SIlya Dryomov } 2338922dab61SIlya Dryomov 23394609245eSIlya Dryomov static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq) 23404609245eSIlya Dryomov { 23414609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 23424609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 23434609245eSIlya Dryomov 23444609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 23454609245eSIlya Dryomov 23464609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 23474609245eSIlya Dryomov lreq->linger_id); 23484609245eSIlya Dryomov if (!lookup_lreq) 23494609245eSIlya Dryomov return; 23504609245eSIlya Dryomov 23514609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 23524609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 23534609245eSIlya Dryomov linger_put(lreq); 23544609245eSIlya Dryomov } 23554609245eSIlya Dryomov 2356922dab61SIlya Dryomov /* 2357922dab61SIlya Dryomov * @lreq has to be both registered and linked. 2358922dab61SIlya Dryomov */ 2359922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 2360922dab61SIlya Dryomov { 236119079203SIlya Dryomov if (lreq->is_watch && lreq->ping_req->r_osd) 2362922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 2363922dab61SIlya Dryomov if (lreq->reg_req->r_osd) 2364922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 23654609245eSIlya Dryomov cancel_linger_map_check(lreq); 2366922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 2367922dab61SIlya Dryomov linger_unregister(lreq); 2368922dab61SIlya Dryomov } 2369922dab61SIlya Dryomov 2370922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 2371922dab61SIlya Dryomov { 2372922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2373922dab61SIlya Dryomov 2374922dab61SIlya Dryomov down_write(&osdc->lock); 2375922dab61SIlya Dryomov if (__linger_registered(lreq)) 2376922dab61SIlya Dryomov __linger_cancel(lreq); 2377922dab61SIlya Dryomov up_write(&osdc->lock); 2378922dab61SIlya Dryomov } 2379922dab61SIlya Dryomov 23804609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq); 23814609245eSIlya Dryomov 23824609245eSIlya Dryomov static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq) 23834609245eSIlya Dryomov { 23844609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 23854609245eSIlya Dryomov struct ceph_osdmap *map = osdc->osdmap; 23864609245eSIlya Dryomov 23874609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 23884609245eSIlya Dryomov WARN_ON(!map->epoch); 23894609245eSIlya Dryomov 23904609245eSIlya Dryomov if (lreq->register_gen) { 23914609245eSIlya Dryomov lreq->map_dne_bound = map->epoch; 23924609245eSIlya Dryomov dout("%s lreq %p linger_id %llu pool disappeared\n", __func__, 23934609245eSIlya Dryomov lreq, lreq->linger_id); 23944609245eSIlya Dryomov } else { 23954609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n", 23964609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 23974609245eSIlya Dryomov map->epoch); 23984609245eSIlya Dryomov } 23994609245eSIlya Dryomov 24004609245eSIlya Dryomov if (lreq->map_dne_bound) { 24014609245eSIlya Dryomov if (map->epoch >= lreq->map_dne_bound) { 24024609245eSIlya Dryomov /* we had a new enough map */ 24034609245eSIlya Dryomov pr_info("linger_id %llu pool does not exist\n", 24044609245eSIlya Dryomov lreq->linger_id); 24054609245eSIlya Dryomov linger_reg_commit_complete(lreq, -ENOENT); 24064609245eSIlya Dryomov __linger_cancel(lreq); 24074609245eSIlya Dryomov } 24084609245eSIlya Dryomov } else { 24094609245eSIlya Dryomov send_linger_map_check(lreq); 24104609245eSIlya Dryomov } 24114609245eSIlya Dryomov } 24124609245eSIlya Dryomov 24134609245eSIlya Dryomov static void linger_map_check_cb(struct ceph_mon_generic_request *greq) 24144609245eSIlya Dryomov { 24154609245eSIlya Dryomov struct ceph_osd_client *osdc = &greq->monc->client->osdc; 24164609245eSIlya Dryomov struct ceph_osd_linger_request *lreq; 24174609245eSIlya Dryomov u64 linger_id = greq->private_data; 24184609245eSIlya Dryomov 24194609245eSIlya Dryomov WARN_ON(greq->result || !greq->u.newest); 24204609245eSIlya Dryomov 24214609245eSIlya Dryomov down_write(&osdc->lock); 24224609245eSIlya Dryomov lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id); 24234609245eSIlya Dryomov if (!lreq) { 24244609245eSIlya Dryomov dout("%s linger_id %llu dne\n", __func__, linger_id); 24254609245eSIlya Dryomov goto out_unlock; 24264609245eSIlya Dryomov } 24274609245eSIlya Dryomov 24284609245eSIlya Dryomov dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n", 24294609245eSIlya Dryomov __func__, lreq, lreq->linger_id, lreq->map_dne_bound, 24304609245eSIlya Dryomov greq->u.newest); 24314609245eSIlya Dryomov if (!lreq->map_dne_bound) 24324609245eSIlya Dryomov lreq->map_dne_bound = greq->u.newest; 24334609245eSIlya Dryomov erase_linger_mc(&osdc->linger_map_checks, lreq); 24344609245eSIlya Dryomov check_linger_pool_dne(lreq); 24354609245eSIlya Dryomov 24364609245eSIlya Dryomov linger_put(lreq); 24374609245eSIlya Dryomov out_unlock: 24384609245eSIlya Dryomov up_write(&osdc->lock); 24394609245eSIlya Dryomov } 24404609245eSIlya Dryomov 24414609245eSIlya Dryomov static void send_linger_map_check(struct ceph_osd_linger_request *lreq) 24424609245eSIlya Dryomov { 24434609245eSIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 24444609245eSIlya Dryomov struct ceph_osd_linger_request *lookup_lreq; 24454609245eSIlya Dryomov int ret; 24464609245eSIlya Dryomov 24474609245eSIlya Dryomov verify_osdc_wrlocked(osdc); 24484609245eSIlya Dryomov 24494609245eSIlya Dryomov lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks, 24504609245eSIlya Dryomov lreq->linger_id); 24514609245eSIlya Dryomov if (lookup_lreq) { 24524609245eSIlya Dryomov WARN_ON(lookup_lreq != lreq); 24534609245eSIlya Dryomov return; 24544609245eSIlya Dryomov } 24554609245eSIlya Dryomov 24564609245eSIlya Dryomov linger_get(lreq); 24574609245eSIlya Dryomov insert_linger_mc(&osdc->linger_map_checks, lreq); 24584609245eSIlya Dryomov ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap", 24594609245eSIlya Dryomov linger_map_check_cb, lreq->linger_id); 24604609245eSIlya Dryomov WARN_ON(ret); 24614609245eSIlya Dryomov } 24624609245eSIlya Dryomov 2463922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 2464922dab61SIlya Dryomov { 2465922dab61SIlya Dryomov int ret; 2466922dab61SIlya Dryomov 2467922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2468922dab61SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); 2469922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 2470922dab61SIlya Dryomov } 2471922dab61SIlya Dryomov 247219079203SIlya Dryomov static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) 247319079203SIlya Dryomov { 247419079203SIlya Dryomov int ret; 247519079203SIlya Dryomov 247619079203SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 247719079203SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); 247819079203SIlya Dryomov return ret ?: lreq->notify_finish_error; 247919079203SIlya Dryomov } 248019079203SIlya Dryomov 2481922dab61SIlya Dryomov /* 2482fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 2483fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 2484fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 2485fbca9635SIlya Dryomov * reset is detected. 24863d14c5d2SYehuda Sadeh */ 24873d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 24883d14c5d2SYehuda Sadeh { 24893d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 24903d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 2491a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 24925aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 24935aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 24945aea3dcdSIlya Dryomov struct rb_node *n, *p; 24953d14c5d2SYehuda Sadeh 24965aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 24975aea3dcdSIlya Dryomov down_write(&osdc->lock); 24983d14c5d2SYehuda Sadeh 24993d14c5d2SYehuda Sadeh /* 25003d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 25013d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 25023d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 25033d14c5d2SYehuda Sadeh */ 25045aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 25055aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 25065aea3dcdSIlya Dryomov bool found = false; 25073d14c5d2SYehuda Sadeh 25085aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 25095aea3dcdSIlya Dryomov struct ceph_osd_request *req = 25105aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 25115aea3dcdSIlya Dryomov 25125aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 25135aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 25145aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 25155aea3dcdSIlya Dryomov found = true; 25165aea3dcdSIlya Dryomov } 25175aea3dcdSIlya Dryomov } 2518922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 2519922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2520922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 2521922dab61SIlya Dryomov 2522922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 2523922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 2524922dab61SIlya Dryomov found = true; 2525922dab61SIlya Dryomov 2526922dab61SIlya Dryomov mutex_lock(&lreq->lock); 252719079203SIlya Dryomov if (lreq->is_watch && lreq->committed && !lreq->last_error) 2528922dab61SIlya Dryomov send_linger_ping(lreq); 2529922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2530922dab61SIlya Dryomov } 25315aea3dcdSIlya Dryomov 25325aea3dcdSIlya Dryomov if (found) 25333d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 25343d14c5d2SYehuda Sadeh } 25355aea3dcdSIlya Dryomov 25365aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 25375aea3dcdSIlya Dryomov maybe_request_map(osdc); 25385aea3dcdSIlya Dryomov 25393d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 25405aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 25415aea3dcdSIlya Dryomov struct ceph_osd, 25423d14c5d2SYehuda Sadeh o_keepalive_item); 25433d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 25443d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 25453d14c5d2SYehuda Sadeh } 25463d14c5d2SYehuda Sadeh 25475aea3dcdSIlya Dryomov up_write(&osdc->lock); 2548fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 2549fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 25503d14c5d2SYehuda Sadeh } 25513d14c5d2SYehuda Sadeh 25523d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 25533d14c5d2SYehuda Sadeh { 25543d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 25553d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 25563d14c5d2SYehuda Sadeh osds_timeout_work.work); 2557a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 255842a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 25593d14c5d2SYehuda Sadeh 256042a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 25615aea3dcdSIlya Dryomov down_write(&osdc->lock); 256242a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 256342a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 256442a2c09fSIlya Dryomov break; 256542a2c09fSIlya Dryomov 25665aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 2567922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 25685aea3dcdSIlya Dryomov close_osd(osd); 256942a2c09fSIlya Dryomov } 257042a2c09fSIlya Dryomov 25715aea3dcdSIlya Dryomov up_write(&osdc->lock); 25723d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 25733d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 25743d14c5d2SYehuda Sadeh } 25753d14c5d2SYehuda Sadeh 2576205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 2577205ee118SIlya Dryomov struct ceph_object_locator *oloc) 2578205ee118SIlya Dryomov { 2579205ee118SIlya Dryomov u8 struct_v, struct_cv; 2580205ee118SIlya Dryomov u32 len; 2581205ee118SIlya Dryomov void *struct_end; 2582205ee118SIlya Dryomov int ret = 0; 2583205ee118SIlya Dryomov 2584205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 2585205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 2586205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 2587205ee118SIlya Dryomov if (struct_v < 3) { 2588205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 2589205ee118SIlya Dryomov struct_v, struct_cv); 2590205ee118SIlya Dryomov goto e_inval; 2591205ee118SIlya Dryomov } 2592205ee118SIlya Dryomov if (struct_cv > 6) { 2593205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 2594205ee118SIlya Dryomov struct_v, struct_cv); 2595205ee118SIlya Dryomov goto e_inval; 2596205ee118SIlya Dryomov } 2597205ee118SIlya Dryomov len = ceph_decode_32(p); 2598205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 2599205ee118SIlya Dryomov struct_end = *p + len; 2600205ee118SIlya Dryomov 2601205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 2602205ee118SIlya Dryomov *p += 4; /* skip preferred */ 2603205ee118SIlya Dryomov 2604205ee118SIlya Dryomov len = ceph_decode_32(p); 2605205ee118SIlya Dryomov if (len > 0) { 2606205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 2607205ee118SIlya Dryomov goto e_inval; 2608205ee118SIlya Dryomov } 2609205ee118SIlya Dryomov 2610205ee118SIlya Dryomov if (struct_v >= 5) { 2611205ee118SIlya Dryomov len = ceph_decode_32(p); 2612205ee118SIlya Dryomov if (len > 0) { 261330c156d9SYan, Zheng ceph_decode_need(p, end, len, e_inval); 261430c156d9SYan, Zheng *p += len; 2615205ee118SIlya Dryomov } 2616205ee118SIlya Dryomov } 2617205ee118SIlya Dryomov 2618205ee118SIlya Dryomov if (struct_v >= 6) { 2619205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 2620205ee118SIlya Dryomov if (hash != -1) { 2621205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 2622205ee118SIlya Dryomov goto e_inval; 2623205ee118SIlya Dryomov } 2624205ee118SIlya Dryomov } 2625205ee118SIlya Dryomov 2626205ee118SIlya Dryomov /* skip the rest */ 2627205ee118SIlya Dryomov *p = struct_end; 2628205ee118SIlya Dryomov out: 2629205ee118SIlya Dryomov return ret; 2630205ee118SIlya Dryomov 2631205ee118SIlya Dryomov e_inval: 2632205ee118SIlya Dryomov ret = -EINVAL; 2633205ee118SIlya Dryomov goto out; 2634205ee118SIlya Dryomov } 2635205ee118SIlya Dryomov 2636205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 2637205ee118SIlya Dryomov struct ceph_request_redirect *redir) 2638205ee118SIlya Dryomov { 2639205ee118SIlya Dryomov u8 struct_v, struct_cv; 2640205ee118SIlya Dryomov u32 len; 2641205ee118SIlya Dryomov void *struct_end; 2642205ee118SIlya Dryomov int ret; 2643205ee118SIlya Dryomov 2644205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 2645205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 2646205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 2647205ee118SIlya Dryomov if (struct_cv > 1) { 2648205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 2649205ee118SIlya Dryomov struct_v, struct_cv); 2650205ee118SIlya Dryomov goto e_inval; 2651205ee118SIlya Dryomov } 2652205ee118SIlya Dryomov len = ceph_decode_32(p); 2653205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 2654205ee118SIlya Dryomov struct_end = *p + len; 2655205ee118SIlya Dryomov 2656205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 2657205ee118SIlya Dryomov if (ret) 2658205ee118SIlya Dryomov goto out; 2659205ee118SIlya Dryomov 2660205ee118SIlya Dryomov len = ceph_decode_32(p); 2661205ee118SIlya Dryomov if (len > 0) { 2662205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 2663205ee118SIlya Dryomov goto e_inval; 2664205ee118SIlya Dryomov } 2665205ee118SIlya Dryomov 2666205ee118SIlya Dryomov len = ceph_decode_32(p); 2667205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 2668205ee118SIlya Dryomov 2669205ee118SIlya Dryomov /* skip the rest */ 2670205ee118SIlya Dryomov *p = struct_end; 2671205ee118SIlya Dryomov out: 2672205ee118SIlya Dryomov return ret; 2673205ee118SIlya Dryomov 2674205ee118SIlya Dryomov e_inval: 2675205ee118SIlya Dryomov ret = -EINVAL; 2676205ee118SIlya Dryomov goto out; 2677205ee118SIlya Dryomov } 2678205ee118SIlya Dryomov 2679fe5da05eSIlya Dryomov struct MOSDOpReply { 2680fe5da05eSIlya Dryomov struct ceph_pg pgid; 2681fe5da05eSIlya Dryomov u64 flags; 2682fe5da05eSIlya Dryomov int result; 2683fe5da05eSIlya Dryomov u32 epoch; 2684fe5da05eSIlya Dryomov int num_ops; 2685fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 2686fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 2687fe5da05eSIlya Dryomov int retry_attempt; 2688fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 2689fe5da05eSIlya Dryomov u64 user_version; 2690fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 2691fe5da05eSIlya Dryomov }; 269225845472SSage Weil 2693fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 26943d14c5d2SYehuda Sadeh { 2695fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 2696fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 2697fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 2698fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 2699b0b31a8fSIlya Dryomov u8 decode_redir; 2700fe5da05eSIlya Dryomov u32 len; 2701fe5da05eSIlya Dryomov int ret; 2702fe5da05eSIlya Dryomov int i; 27033d14c5d2SYehuda Sadeh 2704fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 2705fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 2706fe5da05eSIlya Dryomov p += len; /* skip oid */ 27071b83bef2SSage Weil 2708fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 2709fe5da05eSIlya Dryomov if (ret) 2710fe5da05eSIlya Dryomov return ret; 27111b83bef2SSage Weil 2712fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 2713fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 2714fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 2715fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 2716fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 2717fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 27181b83bef2SSage Weil 2719fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 2720fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 2721fe5da05eSIlya Dryomov goto e_inval; 27221b83bef2SSage Weil 2723fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 2724fe5da05eSIlya Dryomov e_inval); 2725fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 27261b83bef2SSage Weil struct ceph_osd_op *op = p; 27271b83bef2SSage Weil 2728fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 27291b83bef2SSage Weil p += sizeof(*op); 27301b83bef2SSage Weil } 2731fe5da05eSIlya Dryomov 2732fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 2733fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 2734fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 2735fe5da05eSIlya Dryomov 2736fe5da05eSIlya Dryomov if (version >= 5) { 2737fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 2738fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 2739fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 2740fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 2741fe5da05eSIlya Dryomov } else { 2742fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 2743fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 27441b83bef2SSage Weil } 27451b83bef2SSage Weil 2746fe5da05eSIlya Dryomov if (version >= 6) { 2747fe5da05eSIlya Dryomov if (version >= 7) 2748fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 2749b0b31a8fSIlya Dryomov else 2750b0b31a8fSIlya Dryomov decode_redir = 1; 2751b0b31a8fSIlya Dryomov } else { 2752b0b31a8fSIlya Dryomov decode_redir = 0; 2753b0b31a8fSIlya Dryomov } 2754b0b31a8fSIlya Dryomov 2755b0b31a8fSIlya Dryomov if (decode_redir) { 2756fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 2757fe5da05eSIlya Dryomov if (ret) 2758fe5da05eSIlya Dryomov return ret; 2759205ee118SIlya Dryomov } else { 2760fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 2761205ee118SIlya Dryomov } 2762205ee118SIlya Dryomov 2763fe5da05eSIlya Dryomov return 0; 2764205ee118SIlya Dryomov 2765fe5da05eSIlya Dryomov e_inval: 2766fe5da05eSIlya Dryomov return -EINVAL; 2767fe5da05eSIlya Dryomov } 2768fe5da05eSIlya Dryomov 2769fe5da05eSIlya Dryomov /* 2770fe5da05eSIlya Dryomov * We are done with @req if 2771fe5da05eSIlya Dryomov * - @m is a safe reply, or 2772fe5da05eSIlya Dryomov * - @m is an unsafe reply and we didn't want a safe one 2773fe5da05eSIlya Dryomov */ 2774fe5da05eSIlya Dryomov static bool done_request(const struct ceph_osd_request *req, 2775fe5da05eSIlya Dryomov const struct MOSDOpReply *m) 2776fe5da05eSIlya Dryomov { 2777fe5da05eSIlya Dryomov return (m->result < 0 || 2778fe5da05eSIlya Dryomov (m->flags & CEPH_OSD_FLAG_ONDISK) || 2779fe5da05eSIlya Dryomov !(req->r_flags & CEPH_OSD_FLAG_ONDISK)); 2780fe5da05eSIlya Dryomov } 2781fe5da05eSIlya Dryomov 2782fe5da05eSIlya Dryomov /* 2783fe5da05eSIlya Dryomov * handle osd op reply. either call the callback if it is specified, 2784fe5da05eSIlya Dryomov * or do the completion to wake up the waiting thread. 2785fe5da05eSIlya Dryomov * 2786fe5da05eSIlya Dryomov * ->r_unsafe_callback is set? yes no 2787fe5da05eSIlya Dryomov * 2788fe5da05eSIlya Dryomov * first reply is OK (needed r_cb/r_completion, r_cb/r_completion, 2789fe5da05eSIlya Dryomov * any or needed/got safe) r_safe_completion r_safe_completion 2790fe5da05eSIlya Dryomov * 2791fe5da05eSIlya Dryomov * first reply is unsafe r_unsafe_cb(true) (nothing) 2792fe5da05eSIlya Dryomov * 2793fe5da05eSIlya Dryomov * when we get the safe reply r_unsafe_cb(false), r_cb/r_completion, 2794fe5da05eSIlya Dryomov * r_safe_completion r_safe_completion 2795fe5da05eSIlya Dryomov */ 27965aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 2797fe5da05eSIlya Dryomov { 27985aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 2799fe5da05eSIlya Dryomov struct ceph_osd_request *req; 2800fe5da05eSIlya Dryomov struct MOSDOpReply m; 2801fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 2802fe5da05eSIlya Dryomov u32 data_len = 0; 2803fe5da05eSIlya Dryomov bool already_acked; 2804fe5da05eSIlya Dryomov int ret; 2805fe5da05eSIlya Dryomov int i; 2806fe5da05eSIlya Dryomov 2807fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 2808fe5da05eSIlya Dryomov 28095aea3dcdSIlya Dryomov down_read(&osdc->lock); 28105aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 28115aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 28125aea3dcdSIlya Dryomov goto out_unlock_osdc; 2813fe5da05eSIlya Dryomov } 28145aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 28155aea3dcdSIlya Dryomov 28165aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 28175aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 28185aea3dcdSIlya Dryomov if (!req) { 28195aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 28205aea3dcdSIlya Dryomov goto out_unlock_session; 28215aea3dcdSIlya Dryomov } 2822fe5da05eSIlya Dryomov 2823fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 2824fe5da05eSIlya Dryomov if (ret) { 2825fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 2826fe5da05eSIlya Dryomov req->r_tid, ret); 2827fe5da05eSIlya Dryomov ceph_msg_dump(msg); 2828fe5da05eSIlya Dryomov goto fail_request; 2829fe5da05eSIlya Dryomov } 2830fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 2831fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 2832fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 2833fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 2834fe5da05eSIlya Dryomov 2835fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 2836fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 2837fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 2838fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 2839fe5da05eSIlya Dryomov req->r_attempts - 1); 28405aea3dcdSIlya Dryomov goto out_unlock_session; 2841fe5da05eSIlya Dryomov } 2842fe5da05eSIlya Dryomov } else { 2843fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 2844fe5da05eSIlya Dryomov } 2845fe5da05eSIlya Dryomov 2846fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 2847fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 2848fe5da05eSIlya Dryomov m.redirect.oloc.pool); 28495aea3dcdSIlya Dryomov unlink_request(osd, req); 28505aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 2851205ee118SIlya Dryomov 285230c156d9SYan, Zheng /* 285330c156d9SYan, Zheng * Not ceph_oloc_copy() - changing pool_ns is not 285430c156d9SYan, Zheng * supported. 285530c156d9SYan, Zheng */ 285630c156d9SYan, Zheng req->r_t.target_oloc.pool = m.redirect.oloc.pool; 28575aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; 28585aea3dcdSIlya Dryomov req->r_tid = 0; 28595aea3dcdSIlya Dryomov __submit_request(req, false); 28605aea3dcdSIlya Dryomov goto out_unlock_osdc; 2861205ee118SIlya Dryomov } 2862205ee118SIlya Dryomov 2863fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 2864fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 2865fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 2866fe5da05eSIlya Dryomov goto fail_request; 2867fe5da05eSIlya Dryomov } 2868fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 2869fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 2870fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 2871fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 2872fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 2873fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 2874fe5da05eSIlya Dryomov } 2875fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 2876fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 2877fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 2878fe5da05eSIlya Dryomov goto fail_request; 2879fe5da05eSIlya Dryomov } 2880fe5da05eSIlya Dryomov dout("%s req %p tid %llu acked %d result %d data_len %u\n", __func__, 2881fe5da05eSIlya Dryomov req, req->r_tid, req->r_got_reply, m.result, data_len); 28823d14c5d2SYehuda Sadeh 2883fe5da05eSIlya Dryomov already_acked = req->r_got_reply; 2884fe5da05eSIlya Dryomov if (!already_acked) { 2885fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 2886fe5da05eSIlya Dryomov req->r_replay_version = m.replay_version; /* struct */ 2887fe5da05eSIlya Dryomov req->r_got_reply = true; 2888fe5da05eSIlya Dryomov } else if (!(m.flags & CEPH_OSD_FLAG_ONDISK)) { 2889fe5da05eSIlya Dryomov dout("req %p tid %llu dup ack\n", req, req->r_tid); 28905aea3dcdSIlya Dryomov goto out_unlock_session; 28913d14c5d2SYehuda Sadeh } 28923d14c5d2SYehuda Sadeh 2893fe5da05eSIlya Dryomov if (done_request(req, &m)) { 28945aea3dcdSIlya Dryomov __finish_request(req); 2895fe5da05eSIlya Dryomov if (req->r_linger) { 2896fe5da05eSIlya Dryomov WARN_ON(req->r_unsafe_callback); 2897922dab61SIlya Dryomov dout("req %p tid %llu cb (locked)\n", req, req->r_tid); 2898922dab61SIlya Dryomov __complete_request(req); 2899fe5da05eSIlya Dryomov } 2900fe5da05eSIlya Dryomov } 29013d14c5d2SYehuda Sadeh 29025aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 29035aea3dcdSIlya Dryomov up_read(&osdc->lock); 29043d14c5d2SYehuda Sadeh 2905fe5da05eSIlya Dryomov if (done_request(req, &m)) { 2906fe5da05eSIlya Dryomov if (already_acked && req->r_unsafe_callback) { 2907fe5da05eSIlya Dryomov dout("req %p tid %llu safe-cb\n", req, req->r_tid); 290861c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 2909922dab61SIlya Dryomov } else if (!req->r_linger) { 2910fe5da05eSIlya Dryomov dout("req %p tid %llu cb\n", req, req->r_tid); 2911fe5da05eSIlya Dryomov __complete_request(req); 291261c5d6bfSYan, Zheng } 2913dc045a91SIlya Dryomov if (m.flags & CEPH_OSD_FLAG_ONDISK) 2914dc045a91SIlya Dryomov complete_all(&req->r_safe_completion); 2915dc045a91SIlya Dryomov ceph_osdc_put_request(req); 2916fe5da05eSIlya Dryomov } else { 2917fe5da05eSIlya Dryomov if (req->r_unsafe_callback) { 2918fe5da05eSIlya Dryomov dout("req %p tid %llu unsafe-cb\n", req, req->r_tid); 2919fe5da05eSIlya Dryomov req->r_unsafe_callback(req, true); 2920fe5da05eSIlya Dryomov } else { 2921fe5da05eSIlya Dryomov WARN_ON(1); 2922fe5da05eSIlya Dryomov } 2923fe5da05eSIlya Dryomov } 29243d14c5d2SYehuda Sadeh 29253d14c5d2SYehuda Sadeh return; 2926fe5da05eSIlya Dryomov 2927fe5da05eSIlya Dryomov fail_request: 29284609245eSIlya Dryomov complete_request(req, -EIO); 29295aea3dcdSIlya Dryomov out_unlock_session: 29305aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 29315aea3dcdSIlya Dryomov out_unlock_osdc: 29325aea3dcdSIlya Dryomov up_read(&osdc->lock); 29333d14c5d2SYehuda Sadeh } 29343d14c5d2SYehuda Sadeh 293542c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 293642c1b124SIlya Dryomov { 293742c1b124SIlya Dryomov struct rb_node *n; 293842c1b124SIlya Dryomov 293942c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 294042c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 294142c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 294242c1b124SIlya Dryomov 294342c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 294442c1b124SIlya Dryomov } 294542c1b124SIlya Dryomov } 294642c1b124SIlya Dryomov 29475aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 29483d14c5d2SYehuda Sadeh { 29495aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 29503d14c5d2SYehuda Sadeh 29515aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 29525aea3dcdSIlya Dryomov if (!pi) 29535aea3dcdSIlya Dryomov return false; 29543d14c5d2SYehuda Sadeh 29555aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 29563d14c5d2SYehuda Sadeh } 29573d14c5d2SYehuda Sadeh 2958922dab61SIlya Dryomov static enum calc_target_result 2959922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 2960922dab61SIlya Dryomov { 2961922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2962922dab61SIlya Dryomov enum calc_target_result ct_res; 2963922dab61SIlya Dryomov 2964922dab61SIlya Dryomov ct_res = calc_target(osdc, &lreq->t, &lreq->last_force_resend, true); 2965922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 2966922dab61SIlya Dryomov struct ceph_osd *osd; 2967922dab61SIlya Dryomov 2968922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 2969922dab61SIlya Dryomov if (osd != lreq->osd) { 2970922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 2971922dab61SIlya Dryomov link_linger(osd, lreq); 2972922dab61SIlya Dryomov } 2973922dab61SIlya Dryomov } 2974922dab61SIlya Dryomov 2975922dab61SIlya Dryomov return ct_res; 2976922dab61SIlya Dryomov } 2977922dab61SIlya Dryomov 29783d14c5d2SYehuda Sadeh /* 29795aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 29803d14c5d2SYehuda Sadeh */ 29815aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 29825aea3dcdSIlya Dryomov bool force_resend, 29835aea3dcdSIlya Dryomov bool cleared_full, 29845aea3dcdSIlya Dryomov bool check_pool_cleared_full, 29855aea3dcdSIlya Dryomov struct rb_root *need_resend, 29865aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 29873d14c5d2SYehuda Sadeh { 29885aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 29895aea3dcdSIlya Dryomov struct rb_node *n; 29905aea3dcdSIlya Dryomov bool force_resend_writes; 29913d14c5d2SYehuda Sadeh 2992922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 2993922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2994922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 2995922dab61SIlya Dryomov enum calc_target_result ct_res; 2996922dab61SIlya Dryomov 2997922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 2998922dab61SIlya Dryomov 2999922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 3000922dab61SIlya Dryomov lreq->linger_id); 3001922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 3002922dab61SIlya Dryomov switch (ct_res) { 3003922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 3004922dab61SIlya Dryomov force_resend_writes = cleared_full || 3005922dab61SIlya Dryomov (check_pool_cleared_full && 3006922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 3007922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 3008922dab61SIlya Dryomov break; 3009922dab61SIlya Dryomov 3010922dab61SIlya Dryomov /* fall through */ 3011922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 30124609245eSIlya Dryomov cancel_linger_map_check(lreq); 3013922dab61SIlya Dryomov /* 3014922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 3015922dab61SIlya Dryomov * may have already added it to the list, since 3016922dab61SIlya Dryomov * it's not unlinked here. 3017922dab61SIlya Dryomov */ 3018922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 3019922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 3020922dab61SIlya Dryomov break; 3021922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 30224609245eSIlya Dryomov check_linger_pool_dne(lreq); 3023922dab61SIlya Dryomov break; 3024922dab61SIlya Dryomov } 3025922dab61SIlya Dryomov } 3026922dab61SIlya Dryomov 30275aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 30285aea3dcdSIlya Dryomov struct ceph_osd_request *req = 30295aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 30305aea3dcdSIlya Dryomov enum calc_target_result ct_res; 3031ab60b16dSAlex Elder 30324609245eSIlya Dryomov n = rb_next(n); /* unlink_request(), check_pool_dne() */ 3033ab60b16dSAlex Elder 30345aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 30355aea3dcdSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, 30365aea3dcdSIlya Dryomov &req->r_last_force_resend, false); 30375aea3dcdSIlya Dryomov switch (ct_res) { 30385aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 30395aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 30405aea3dcdSIlya Dryomov (check_pool_cleared_full && 30415aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 30425aea3dcdSIlya Dryomov if (!force_resend && 30435aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 30445aea3dcdSIlya Dryomov !force_resend_writes)) 30455aea3dcdSIlya Dryomov break; 3046a40c4f10SYehuda Sadeh 30475aea3dcdSIlya Dryomov /* fall through */ 30485aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 30494609245eSIlya Dryomov cancel_map_check(req); 30505aea3dcdSIlya Dryomov unlink_request(osd, req); 30515aea3dcdSIlya Dryomov insert_request(need_resend, req); 30525aea3dcdSIlya Dryomov break; 30535aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 30544609245eSIlya Dryomov check_pool_dne(req); 30555aea3dcdSIlya Dryomov break; 3056a40c4f10SYehuda Sadeh } 30573d14c5d2SYehuda Sadeh } 30583d14c5d2SYehuda Sadeh } 30596f6c7006SSage Weil 306042c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 30615aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 30625aea3dcdSIlya Dryomov struct rb_root *need_resend, 30635aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 306442c1b124SIlya Dryomov { 306542c1b124SIlya Dryomov struct ceph_osdmap *newmap; 306642c1b124SIlya Dryomov struct rb_node *n; 306742c1b124SIlya Dryomov bool skipped_map = false; 306842c1b124SIlya Dryomov bool was_full; 306942c1b124SIlya Dryomov 3070b7ec35b3SIlya Dryomov was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 307142c1b124SIlya Dryomov set_pool_was_full(osdc); 307242c1b124SIlya Dryomov 307342c1b124SIlya Dryomov if (incremental) 307442c1b124SIlya Dryomov newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); 307542c1b124SIlya Dryomov else 307642c1b124SIlya Dryomov newmap = ceph_osdmap_decode(&p, end); 307742c1b124SIlya Dryomov if (IS_ERR(newmap)) 307842c1b124SIlya Dryomov return PTR_ERR(newmap); 307942c1b124SIlya Dryomov 308042c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 308142c1b124SIlya Dryomov /* 308242c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 308342c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 308442c1b124SIlya Dryomov * should be false. 308542c1b124SIlya Dryomov */ 308642c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 308742c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 308842c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 308942c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 309042c1b124SIlya Dryomov 309142c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 309242c1b124SIlya Dryomov if (old_pi) 309342c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 309442c1b124SIlya Dryomov else 309542c1b124SIlya Dryomov WARN_ON(pi->was_full); 309642c1b124SIlya Dryomov } 309742c1b124SIlya Dryomov 309842c1b124SIlya Dryomov if (osdc->osdmap->epoch && 309942c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 310042c1b124SIlya Dryomov WARN_ON(incremental); 310142c1b124SIlya Dryomov skipped_map = true; 310242c1b124SIlya Dryomov } 310342c1b124SIlya Dryomov 310442c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 310542c1b124SIlya Dryomov osdc->osdmap = newmap; 310642c1b124SIlya Dryomov } 310742c1b124SIlya Dryomov 3108b7ec35b3SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL); 31095aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 31105aea3dcdSIlya Dryomov need_resend, need_resend_linger); 31115aea3dcdSIlya Dryomov 31125aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 31135aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 31145aea3dcdSIlya Dryomov 31155aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 31165aea3dcdSIlya Dryomov 31175aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 31185aea3dcdSIlya Dryomov need_resend_linger); 31195aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 31205aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 31215aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 31225aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 31235aea3dcdSIlya Dryomov close_osd(osd); 31245aea3dcdSIlya Dryomov } 312542c1b124SIlya Dryomov 312642c1b124SIlya Dryomov return 0; 312742c1b124SIlya Dryomov } 31286f6c7006SSage Weil 31295aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 31305aea3dcdSIlya Dryomov struct rb_root *need_resend, 31315aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 31325aea3dcdSIlya Dryomov { 3133922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 31345aea3dcdSIlya Dryomov struct rb_node *n; 31355aea3dcdSIlya Dryomov 31365aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 31375aea3dcdSIlya Dryomov struct ceph_osd_request *req = 31385aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 31395aea3dcdSIlya Dryomov struct ceph_osd *osd; 31405aea3dcdSIlya Dryomov 31415aea3dcdSIlya Dryomov n = rb_next(n); 31425aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 31435aea3dcdSIlya Dryomov 31445aea3dcdSIlya Dryomov WARN_ON(req->r_osd); 31455aea3dcdSIlya Dryomov calc_target(osdc, &req->r_t, NULL, false); 31465aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 31475aea3dcdSIlya Dryomov link_request(osd, req); 31485aea3dcdSIlya Dryomov if (!req->r_linger) { 31495aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 31505aea3dcdSIlya Dryomov send_request(req); 3151922dab61SIlya Dryomov } else { 3152922dab61SIlya Dryomov cancel_linger_request(req); 31535aea3dcdSIlya Dryomov } 31545aea3dcdSIlya Dryomov } 3155922dab61SIlya Dryomov 3156922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 3157922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 3158922dab61SIlya Dryomov send_linger(lreq); 3159922dab61SIlya Dryomov 3160922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 3161922dab61SIlya Dryomov } 31625aea3dcdSIlya Dryomov } 31635aea3dcdSIlya Dryomov 31643d14c5d2SYehuda Sadeh /* 31653d14c5d2SYehuda Sadeh * Process updated osd map. 31663d14c5d2SYehuda Sadeh * 31673d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 31683d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 31693d14c5d2SYehuda Sadeh * off to different OSDs as needed. 31703d14c5d2SYehuda Sadeh */ 31713d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 31723d14c5d2SYehuda Sadeh { 317342c1b124SIlya Dryomov void *p = msg->front.iov_base; 317442c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 31753d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 31763d14c5d2SYehuda Sadeh u32 epoch; 31773d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 31785aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 31795aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 318042c1b124SIlya Dryomov bool handled_incremental = false; 318142c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 318242c1b124SIlya Dryomov bool pauserd, pausewr; 318342c1b124SIlya Dryomov int err; 31843d14c5d2SYehuda Sadeh 318542c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 31865aea3dcdSIlya Dryomov down_write(&osdc->lock); 31873d14c5d2SYehuda Sadeh 31883d14c5d2SYehuda Sadeh /* verify fsid */ 31893d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 31903d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 31913d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 319242c1b124SIlya Dryomov goto bad; 31933d14c5d2SYehuda Sadeh 3194b7ec35b3SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3195b7ec35b3SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3196b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 319742c1b124SIlya Dryomov have_pool_full(osdc); 31989a1ea2dbSJosh Durgin 31993d14c5d2SYehuda Sadeh /* incremental maps */ 32003d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 32013d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 32023d14c5d2SYehuda Sadeh while (nr_maps > 0) { 32033d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 32043d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 32053d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 32063d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 320742c1b124SIlya Dryomov if (osdc->osdmap->epoch && 320842c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 32093d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 32103d14c5d2SYehuda Sadeh epoch, maplen); 32115aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 32125aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 321342c1b124SIlya Dryomov if (err) 32143d14c5d2SYehuda Sadeh goto bad; 321542c1b124SIlya Dryomov handled_incremental = true; 32163d14c5d2SYehuda Sadeh } else { 32173d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 32183d14c5d2SYehuda Sadeh epoch, maplen); 32193d14c5d2SYehuda Sadeh } 322042c1b124SIlya Dryomov p += maplen; 32213d14c5d2SYehuda Sadeh nr_maps--; 32223d14c5d2SYehuda Sadeh } 322342c1b124SIlya Dryomov if (handled_incremental) 32243d14c5d2SYehuda Sadeh goto done; 32253d14c5d2SYehuda Sadeh 32263d14c5d2SYehuda Sadeh /* full maps */ 32273d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 32283d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 32293d14c5d2SYehuda Sadeh while (nr_maps) { 32303d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 32313d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 32323d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 32333d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 32343d14c5d2SYehuda Sadeh if (nr_maps > 1) { 32353d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 32363d14c5d2SYehuda Sadeh epoch, maplen); 3237e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 32383d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 32393d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 32403d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 32413d14c5d2SYehuda Sadeh } else { 32423d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 32435aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 32445aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 324542c1b124SIlya Dryomov if (err) 32463d14c5d2SYehuda Sadeh goto bad; 32473d14c5d2SYehuda Sadeh } 32483d14c5d2SYehuda Sadeh p += maplen; 32493d14c5d2SYehuda Sadeh nr_maps--; 32503d14c5d2SYehuda Sadeh } 32513d14c5d2SYehuda Sadeh 32523d14c5d2SYehuda Sadeh done: 3253cd634fb6SSage Weil /* 3254cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 3255cd634fb6SSage Weil * we find out when we are no longer full and stop returning 3256cd634fb6SSage Weil * ENOSPC. 3257cd634fb6SSage Weil */ 3258b7ec35b3SIlya Dryomov pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD); 3259b7ec35b3SIlya Dryomov pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) || 3260b7ec35b3SIlya Dryomov ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) || 326142c1b124SIlya Dryomov have_pool_full(osdc); 326242c1b124SIlya Dryomov if (was_pauserd || was_pausewr || pauserd || pausewr) 326342c1b124SIlya Dryomov maybe_request_map(osdc); 3264cd634fb6SSage Weil 32655aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 326642c1b124SIlya Dryomov 326742c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 326842c1b124SIlya Dryomov osdc->osdmap->epoch); 32695aea3dcdSIlya Dryomov up_write(&osdc->lock); 32703d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 32713d14c5d2SYehuda Sadeh return; 32723d14c5d2SYehuda Sadeh 32733d14c5d2SYehuda Sadeh bad: 32743d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 32753d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 32765aea3dcdSIlya Dryomov up_write(&osdc->lock); 32775aea3dcdSIlya Dryomov } 32785aea3dcdSIlya Dryomov 32795aea3dcdSIlya Dryomov /* 32805aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 32815aea3dcdSIlya Dryomov */ 32825aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 32835aea3dcdSIlya Dryomov { 32845aea3dcdSIlya Dryomov struct rb_node *n; 32855aea3dcdSIlya Dryomov 3286922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 32875aea3dcdSIlya Dryomov struct ceph_osd_request *req = 32885aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 32895aea3dcdSIlya Dryomov 3290922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 3291922dab61SIlya Dryomov 32925aea3dcdSIlya Dryomov if (!req->r_linger) { 32935aea3dcdSIlya Dryomov if (!req->r_t.paused) 32945aea3dcdSIlya Dryomov send_request(req); 3295922dab61SIlya Dryomov } else { 3296922dab61SIlya Dryomov cancel_linger_request(req); 32975aea3dcdSIlya Dryomov } 32985aea3dcdSIlya Dryomov } 3299922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 3300922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3301922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3302922dab61SIlya Dryomov 3303922dab61SIlya Dryomov send_linger(lreq); 3304922dab61SIlya Dryomov } 33055aea3dcdSIlya Dryomov } 33065aea3dcdSIlya Dryomov 33075aea3dcdSIlya Dryomov /* 33085aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 33095aea3dcdSIlya Dryomov */ 33105aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 33115aea3dcdSIlya Dryomov { 33125aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 33135aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 33145aea3dcdSIlya Dryomov 33155aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 33165aea3dcdSIlya Dryomov 33175aea3dcdSIlya Dryomov down_write(&osdc->lock); 33185aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 33195aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 33205aea3dcdSIlya Dryomov goto out_unlock; 33215aea3dcdSIlya Dryomov } 33225aea3dcdSIlya Dryomov 33235aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 33245aea3dcdSIlya Dryomov kick_osd_requests(osd); 33255aea3dcdSIlya Dryomov maybe_request_map(osdc); 33265aea3dcdSIlya Dryomov 33275aea3dcdSIlya Dryomov out_unlock: 33285aea3dcdSIlya Dryomov up_write(&osdc->lock); 33293d14c5d2SYehuda Sadeh } 33303d14c5d2SYehuda Sadeh 33313d14c5d2SYehuda Sadeh /* 3332a40c4f10SYehuda Sadeh * Process osd watch notifications 3333a40c4f10SYehuda Sadeh */ 33343c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 33353c663bbdSAlex Elder struct ceph_msg *msg) 3336a40c4f10SYehuda Sadeh { 3337922dab61SIlya Dryomov void *p = msg->front.iov_base; 3338922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 3339922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 3340922dab61SIlya Dryomov struct linger_work *lwork; 3341922dab61SIlya Dryomov u8 proto_ver, opcode; 3342922dab61SIlya Dryomov u64 cookie, notify_id; 3343922dab61SIlya Dryomov u64 notifier_id = 0; 334419079203SIlya Dryomov s32 return_code = 0; 3345922dab61SIlya Dryomov void *payload = NULL; 3346922dab61SIlya Dryomov u32 payload_len = 0; 3347a40c4f10SYehuda Sadeh 3348a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 3349a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 3350a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 3351922dab61SIlya Dryomov p += 8; /* skip ver */ 3352a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 3353a40c4f10SYehuda Sadeh 3354922dab61SIlya Dryomov if (proto_ver >= 1) { 3355922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 3356922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 3357922dab61SIlya Dryomov payload = p; 3358922dab61SIlya Dryomov p += payload_len; 3359a40c4f10SYehuda Sadeh } 3360a40c4f10SYehuda Sadeh 3361922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 336219079203SIlya Dryomov ceph_decode_32_safe(&p, end, return_code, bad); 3363922dab61SIlya Dryomov 3364922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 3365922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 3366922dab61SIlya Dryomov 3367922dab61SIlya Dryomov down_read(&osdc->lock); 3368922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 3369922dab61SIlya Dryomov if (!lreq) { 3370922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 3371922dab61SIlya Dryomov cookie); 3372922dab61SIlya Dryomov goto out_unlock_osdc; 3373922dab61SIlya Dryomov } 3374922dab61SIlya Dryomov 3375922dab61SIlya Dryomov mutex_lock(&lreq->lock); 337619079203SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, 337719079203SIlya Dryomov opcode, cookie, lreq, lreq->is_watch); 3378922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 3379922dab61SIlya Dryomov if (!lreq->last_error) { 3380922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 3381922dab61SIlya Dryomov queue_watch_error(lreq); 3382922dab61SIlya Dryomov } 338319079203SIlya Dryomov } else if (!lreq->is_watch) { 338419079203SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ 338519079203SIlya Dryomov if (lreq->notify_id && lreq->notify_id != notify_id) { 338619079203SIlya Dryomov dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, 338719079203SIlya Dryomov lreq->notify_id, notify_id); 338819079203SIlya Dryomov } else if (!completion_done(&lreq->notify_finish_wait)) { 338919079203SIlya Dryomov struct ceph_msg_data *data = 339019079203SIlya Dryomov list_first_entry_or_null(&msg->data, 339119079203SIlya Dryomov struct ceph_msg_data, 339219079203SIlya Dryomov links); 339319079203SIlya Dryomov 339419079203SIlya Dryomov if (data) { 339519079203SIlya Dryomov if (lreq->preply_pages) { 339619079203SIlya Dryomov WARN_ON(data->type != 339719079203SIlya Dryomov CEPH_MSG_DATA_PAGES); 339819079203SIlya Dryomov *lreq->preply_pages = data->pages; 339919079203SIlya Dryomov *lreq->preply_len = data->length; 340019079203SIlya Dryomov } else { 340119079203SIlya Dryomov ceph_release_page_vector(data->pages, 340219079203SIlya Dryomov calc_pages_for(0, data->length)); 340319079203SIlya Dryomov } 340419079203SIlya Dryomov } 340519079203SIlya Dryomov lreq->notify_finish_error = return_code; 340619079203SIlya Dryomov complete_all(&lreq->notify_finish_wait); 340719079203SIlya Dryomov } 3408922dab61SIlya Dryomov } else { 3409922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 3410922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 3411922dab61SIlya Dryomov if (!lwork) { 3412922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 3413922dab61SIlya Dryomov goto out_unlock_lreq; 3414922dab61SIlya Dryomov } 3415922dab61SIlya Dryomov 3416922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 3417922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 3418922dab61SIlya Dryomov lwork->notify.payload = payload; 3419922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 3420922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 3421922dab61SIlya Dryomov lwork_queue(lwork); 3422922dab61SIlya Dryomov } 3423922dab61SIlya Dryomov 3424922dab61SIlya Dryomov out_unlock_lreq: 3425922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3426922dab61SIlya Dryomov out_unlock_osdc: 3427922dab61SIlya Dryomov up_read(&osdc->lock); 3428a40c4f10SYehuda Sadeh return; 3429a40c4f10SYehuda Sadeh 3430a40c4f10SYehuda Sadeh bad: 3431a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 3432a40c4f10SYehuda Sadeh } 3433a40c4f10SYehuda Sadeh 3434a40c4f10SYehuda Sadeh /* 34353d14c5d2SYehuda Sadeh * Register request, send initial attempt. 34363d14c5d2SYehuda Sadeh */ 34373d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 34383d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 34393d14c5d2SYehuda Sadeh bool nofail) 34403d14c5d2SYehuda Sadeh { 34415aea3dcdSIlya Dryomov down_read(&osdc->lock); 34425aea3dcdSIlya Dryomov submit_request(req, false); 34435aea3dcdSIlya Dryomov up_read(&osdc->lock); 34443d14c5d2SYehuda Sadeh 34455aea3dcdSIlya Dryomov return 0; 34463d14c5d2SYehuda Sadeh } 34473d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 34483d14c5d2SYehuda Sadeh 34493d14c5d2SYehuda Sadeh /* 3450c9f9b93dSIlya Dryomov * Unregister a registered request. The request is not completed (i.e. 3451c9f9b93dSIlya Dryomov * no callbacks or wakeups) - higher layers are supposed to know what 3452c9f9b93dSIlya Dryomov * they are canceling. 3453c9f9b93dSIlya Dryomov */ 3454c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 3455c9f9b93dSIlya Dryomov { 3456c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 3457c9f9b93dSIlya Dryomov 34585aea3dcdSIlya Dryomov down_write(&osdc->lock); 34595aea3dcdSIlya Dryomov if (req->r_osd) 34605aea3dcdSIlya Dryomov cancel_request(req); 34615aea3dcdSIlya Dryomov up_write(&osdc->lock); 3462c9f9b93dSIlya Dryomov } 3463c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 3464c9f9b93dSIlya Dryomov 3465c9f9b93dSIlya Dryomov /* 346642b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 346742b06965SIlya Dryomov */ 346842b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 346942b06965SIlya Dryomov unsigned long timeout) 347042b06965SIlya Dryomov { 347142b06965SIlya Dryomov long left; 347242b06965SIlya Dryomov 347342b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 34740e76abf2SYan, Zheng left = wait_for_completion_killable_timeout(&req->r_completion, 347542b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 347642b06965SIlya Dryomov if (left <= 0) { 347742b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 347842b06965SIlya Dryomov ceph_osdc_cancel_request(req); 347942b06965SIlya Dryomov 348042b06965SIlya Dryomov /* kludge - need to to wake ceph_osdc_sync() */ 348142b06965SIlya Dryomov complete_all(&req->r_safe_completion); 348242b06965SIlya Dryomov } else { 348342b06965SIlya Dryomov left = req->r_result; /* completed */ 348442b06965SIlya Dryomov } 348542b06965SIlya Dryomov 348642b06965SIlya Dryomov return left; 348742b06965SIlya Dryomov } 348842b06965SIlya Dryomov 348942b06965SIlya Dryomov /* 34903d14c5d2SYehuda Sadeh * wait for a request to complete 34913d14c5d2SYehuda Sadeh */ 34923d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 34933d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 34943d14c5d2SYehuda Sadeh { 349542b06965SIlya Dryomov return wait_request_timeout(req, 0); 34963d14c5d2SYehuda Sadeh } 34973d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 34983d14c5d2SYehuda Sadeh 34993d14c5d2SYehuda Sadeh /* 35003d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 35013d14c5d2SYehuda Sadeh */ 35023d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 35033d14c5d2SYehuda Sadeh { 35045aea3dcdSIlya Dryomov struct rb_node *n, *p; 35055aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 35063d14c5d2SYehuda Sadeh 35075aea3dcdSIlya Dryomov again: 35085aea3dcdSIlya Dryomov down_read(&osdc->lock); 35095aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 35105aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 35115aea3dcdSIlya Dryomov 35125aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 35135aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 35145aea3dcdSIlya Dryomov struct ceph_osd_request *req = 35155aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 35165aea3dcdSIlya Dryomov 35173d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 35183d14c5d2SYehuda Sadeh break; 35193d14c5d2SYehuda Sadeh 35205aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 35213d14c5d2SYehuda Sadeh continue; 35223d14c5d2SYehuda Sadeh 35233d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 35245aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 35255aea3dcdSIlya Dryomov up_read(&osdc->lock); 35265aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 35275aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 35283d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 35293d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 35305aea3dcdSIlya Dryomov goto again; 35313d14c5d2SYehuda Sadeh } 35325aea3dcdSIlya Dryomov 35335aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 35345aea3dcdSIlya Dryomov } 35355aea3dcdSIlya Dryomov 35365aea3dcdSIlya Dryomov up_read(&osdc->lock); 35375aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 35383d14c5d2SYehuda Sadeh } 35393d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 35403d14c5d2SYehuda Sadeh 3541922dab61SIlya Dryomov static struct ceph_osd_request * 3542922dab61SIlya Dryomov alloc_linger_request(struct ceph_osd_linger_request *lreq) 3543922dab61SIlya Dryomov { 3544922dab61SIlya Dryomov struct ceph_osd_request *req; 3545922dab61SIlya Dryomov 3546922dab61SIlya Dryomov req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); 3547922dab61SIlya Dryomov if (!req) 3548922dab61SIlya Dryomov return NULL; 3549922dab61SIlya Dryomov 3550922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 3551922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 3552922dab61SIlya Dryomov 3553922dab61SIlya Dryomov if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { 3554922dab61SIlya Dryomov ceph_osdc_put_request(req); 3555922dab61SIlya Dryomov return NULL; 3556922dab61SIlya Dryomov } 3557922dab61SIlya Dryomov 3558922dab61SIlya Dryomov return req; 3559922dab61SIlya Dryomov } 3560922dab61SIlya Dryomov 3561922dab61SIlya Dryomov /* 3562922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 3563922dab61SIlya Dryomov */ 3564922dab61SIlya Dryomov struct ceph_osd_linger_request * 3565922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 3566922dab61SIlya Dryomov struct ceph_object_id *oid, 3567922dab61SIlya Dryomov struct ceph_object_locator *oloc, 3568922dab61SIlya Dryomov rados_watchcb2_t wcb, 3569922dab61SIlya Dryomov rados_watcherrcb_t errcb, 3570922dab61SIlya Dryomov void *data) 3571922dab61SIlya Dryomov { 3572922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 3573922dab61SIlya Dryomov int ret; 3574922dab61SIlya Dryomov 3575922dab61SIlya Dryomov lreq = linger_alloc(osdc); 3576922dab61SIlya Dryomov if (!lreq) 3577922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 3578922dab61SIlya Dryomov 357919079203SIlya Dryomov lreq->is_watch = true; 3580922dab61SIlya Dryomov lreq->wcb = wcb; 3581922dab61SIlya Dryomov lreq->errcb = errcb; 3582922dab61SIlya Dryomov lreq->data = data; 3583b07d3c4bSIlya Dryomov lreq->watch_valid_thru = jiffies; 3584922dab61SIlya Dryomov 3585922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 3586922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 3587922dab61SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK; 3588922dab61SIlya Dryomov lreq->mtime = CURRENT_TIME; 3589922dab61SIlya Dryomov 3590922dab61SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 3591922dab61SIlya Dryomov if (!lreq->reg_req) { 3592922dab61SIlya Dryomov ret = -ENOMEM; 3593922dab61SIlya Dryomov goto err_put_lreq; 3594922dab61SIlya Dryomov } 3595922dab61SIlya Dryomov 3596922dab61SIlya Dryomov lreq->ping_req = alloc_linger_request(lreq); 3597922dab61SIlya Dryomov if (!lreq->ping_req) { 3598922dab61SIlya Dryomov ret = -ENOMEM; 3599922dab61SIlya Dryomov goto err_put_lreq; 3600922dab61SIlya Dryomov } 3601922dab61SIlya Dryomov 3602922dab61SIlya Dryomov down_write(&osdc->lock); 3603922dab61SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 3604922dab61SIlya Dryomov osd_req_op_watch_init(lreq->reg_req, 0, lreq->linger_id, 3605922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_WATCH); 3606922dab61SIlya Dryomov osd_req_op_watch_init(lreq->ping_req, 0, lreq->linger_id, 3607922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_PING); 3608922dab61SIlya Dryomov linger_submit(lreq); 3609922dab61SIlya Dryomov up_write(&osdc->lock); 3610922dab61SIlya Dryomov 3611922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 3612922dab61SIlya Dryomov if (ret) { 3613922dab61SIlya Dryomov linger_cancel(lreq); 3614922dab61SIlya Dryomov goto err_put_lreq; 3615922dab61SIlya Dryomov } 3616922dab61SIlya Dryomov 3617922dab61SIlya Dryomov return lreq; 3618922dab61SIlya Dryomov 3619922dab61SIlya Dryomov err_put_lreq: 3620922dab61SIlya Dryomov linger_put(lreq); 3621922dab61SIlya Dryomov return ERR_PTR(ret); 3622922dab61SIlya Dryomov } 3623922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 3624922dab61SIlya Dryomov 3625922dab61SIlya Dryomov /* 3626922dab61SIlya Dryomov * Releases a ref. 3627922dab61SIlya Dryomov * 3628922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 3629922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 3630922dab61SIlya Dryomov * with mount_timeout"). 3631922dab61SIlya Dryomov */ 3632922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 3633922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 3634922dab61SIlya Dryomov { 3635922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 3636922dab61SIlya Dryomov struct ceph_osd_request *req; 3637922dab61SIlya Dryomov int ret; 3638922dab61SIlya Dryomov 3639922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 3640922dab61SIlya Dryomov if (!req) 3641922dab61SIlya Dryomov return -ENOMEM; 3642922dab61SIlya Dryomov 3643922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 3644922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 3645922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK; 3646922dab61SIlya Dryomov req->r_mtime = CURRENT_TIME; 3647922dab61SIlya Dryomov osd_req_op_watch_init(req, 0, lreq->linger_id, 3648922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_UNWATCH); 3649922dab61SIlya Dryomov 3650922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 3651922dab61SIlya Dryomov if (ret) 3652922dab61SIlya Dryomov goto out_put_req; 3653922dab61SIlya Dryomov 3654922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 3655922dab61SIlya Dryomov linger_cancel(lreq); 3656922dab61SIlya Dryomov linger_put(lreq); 3657922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 3658922dab61SIlya Dryomov 3659922dab61SIlya Dryomov out_put_req: 3660922dab61SIlya Dryomov ceph_osdc_put_request(req); 3661922dab61SIlya Dryomov return ret; 3662922dab61SIlya Dryomov } 3663922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 3664922dab61SIlya Dryomov 3665922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 3666922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 3667922dab61SIlya Dryomov size_t payload_len) 3668922dab61SIlya Dryomov { 3669922dab61SIlya Dryomov struct ceph_osd_req_op *op; 3670922dab61SIlya Dryomov struct ceph_pagelist *pl; 3671922dab61SIlya Dryomov int ret; 3672922dab61SIlya Dryomov 3673922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 3674922dab61SIlya Dryomov 3675922dab61SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 3676922dab61SIlya Dryomov if (!pl) 3677922dab61SIlya Dryomov return -ENOMEM; 3678922dab61SIlya Dryomov 3679922dab61SIlya Dryomov ceph_pagelist_init(pl); 3680922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 3681922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 3682922dab61SIlya Dryomov if (payload) { 3683922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 3684922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 3685922dab61SIlya Dryomov } else { 3686922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 3687922dab61SIlya Dryomov } 3688922dab61SIlya Dryomov if (ret) { 3689922dab61SIlya Dryomov ceph_pagelist_release(pl); 3690922dab61SIlya Dryomov return -ENOMEM; 3691922dab61SIlya Dryomov } 3692922dab61SIlya Dryomov 3693922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 3694922dab61SIlya Dryomov op->indata_len = pl->length; 3695922dab61SIlya Dryomov return 0; 3696922dab61SIlya Dryomov } 3697922dab61SIlya Dryomov 3698922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 3699922dab61SIlya Dryomov struct ceph_object_id *oid, 3700922dab61SIlya Dryomov struct ceph_object_locator *oloc, 3701922dab61SIlya Dryomov u64 notify_id, 3702922dab61SIlya Dryomov u64 cookie, 3703922dab61SIlya Dryomov void *payload, 3704922dab61SIlya Dryomov size_t payload_len) 3705922dab61SIlya Dryomov { 3706922dab61SIlya Dryomov struct ceph_osd_request *req; 3707922dab61SIlya Dryomov int ret; 3708922dab61SIlya Dryomov 3709922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 3710922dab61SIlya Dryomov if (!req) 3711922dab61SIlya Dryomov return -ENOMEM; 3712922dab61SIlya Dryomov 3713922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 3714922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 3715922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 3716922dab61SIlya Dryomov 3717922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 3718922dab61SIlya Dryomov if (ret) 3719922dab61SIlya Dryomov goto out_put_req; 3720922dab61SIlya Dryomov 3721922dab61SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 3722922dab61SIlya Dryomov payload_len); 3723922dab61SIlya Dryomov if (ret) 3724922dab61SIlya Dryomov goto out_put_req; 3725922dab61SIlya Dryomov 3726922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 3727922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 3728922dab61SIlya Dryomov 3729922dab61SIlya Dryomov out_put_req: 3730922dab61SIlya Dryomov ceph_osdc_put_request(req); 3731922dab61SIlya Dryomov return ret; 3732922dab61SIlya Dryomov } 3733922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 3734922dab61SIlya Dryomov 373519079203SIlya Dryomov static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, 373619079203SIlya Dryomov u64 cookie, u32 prot_ver, u32 timeout, 373719079203SIlya Dryomov void *payload, size_t payload_len) 373819079203SIlya Dryomov { 373919079203SIlya Dryomov struct ceph_osd_req_op *op; 374019079203SIlya Dryomov struct ceph_pagelist *pl; 374119079203SIlya Dryomov int ret; 374219079203SIlya Dryomov 374319079203SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); 374419079203SIlya Dryomov op->notify.cookie = cookie; 374519079203SIlya Dryomov 374619079203SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 374719079203SIlya Dryomov if (!pl) 374819079203SIlya Dryomov return -ENOMEM; 374919079203SIlya Dryomov 375019079203SIlya Dryomov ceph_pagelist_init(pl); 375119079203SIlya Dryomov ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ 375219079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, timeout); 375319079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 375419079203SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 375519079203SIlya Dryomov if (ret) { 375619079203SIlya Dryomov ceph_pagelist_release(pl); 375719079203SIlya Dryomov return -ENOMEM; 375819079203SIlya Dryomov } 375919079203SIlya Dryomov 376019079203SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify.request_data, pl); 376119079203SIlya Dryomov op->indata_len = pl->length; 376219079203SIlya Dryomov return 0; 376319079203SIlya Dryomov } 376419079203SIlya Dryomov 376519079203SIlya Dryomov /* 376619079203SIlya Dryomov * @timeout: in seconds 376719079203SIlya Dryomov * 376819079203SIlya Dryomov * @preply_{pages,len} are initialized both on success and error. 376919079203SIlya Dryomov * The caller is responsible for: 377019079203SIlya Dryomov * 377119079203SIlya Dryomov * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) 377219079203SIlya Dryomov */ 377319079203SIlya Dryomov int ceph_osdc_notify(struct ceph_osd_client *osdc, 377419079203SIlya Dryomov struct ceph_object_id *oid, 377519079203SIlya Dryomov struct ceph_object_locator *oloc, 377619079203SIlya Dryomov void *payload, 377719079203SIlya Dryomov size_t payload_len, 377819079203SIlya Dryomov u32 timeout, 377919079203SIlya Dryomov struct page ***preply_pages, 378019079203SIlya Dryomov size_t *preply_len) 378119079203SIlya Dryomov { 378219079203SIlya Dryomov struct ceph_osd_linger_request *lreq; 378319079203SIlya Dryomov struct page **pages; 378419079203SIlya Dryomov int ret; 378519079203SIlya Dryomov 378619079203SIlya Dryomov WARN_ON(!timeout); 378719079203SIlya Dryomov if (preply_pages) { 378819079203SIlya Dryomov *preply_pages = NULL; 378919079203SIlya Dryomov *preply_len = 0; 379019079203SIlya Dryomov } 379119079203SIlya Dryomov 379219079203SIlya Dryomov lreq = linger_alloc(osdc); 379319079203SIlya Dryomov if (!lreq) 379419079203SIlya Dryomov return -ENOMEM; 379519079203SIlya Dryomov 379619079203SIlya Dryomov lreq->preply_pages = preply_pages; 379719079203SIlya Dryomov lreq->preply_len = preply_len; 379819079203SIlya Dryomov 379919079203SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 380019079203SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 380119079203SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_READ; 380219079203SIlya Dryomov 380319079203SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 380419079203SIlya Dryomov if (!lreq->reg_req) { 380519079203SIlya Dryomov ret = -ENOMEM; 380619079203SIlya Dryomov goto out_put_lreq; 380719079203SIlya Dryomov } 380819079203SIlya Dryomov 380919079203SIlya Dryomov /* for notify_id */ 381019079203SIlya Dryomov pages = ceph_alloc_page_vector(1, GFP_NOIO); 381119079203SIlya Dryomov if (IS_ERR(pages)) { 381219079203SIlya Dryomov ret = PTR_ERR(pages); 381319079203SIlya Dryomov goto out_put_lreq; 381419079203SIlya Dryomov } 381519079203SIlya Dryomov 381619079203SIlya Dryomov down_write(&osdc->lock); 381719079203SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 381819079203SIlya Dryomov ret = osd_req_op_notify_init(lreq->reg_req, 0, lreq->linger_id, 1, 381919079203SIlya Dryomov timeout, payload, payload_len); 382019079203SIlya Dryomov if (ret) { 382119079203SIlya Dryomov linger_unregister(lreq); 382219079203SIlya Dryomov up_write(&osdc->lock); 382319079203SIlya Dryomov ceph_release_page_vector(pages, 1); 382419079203SIlya Dryomov goto out_put_lreq; 382519079203SIlya Dryomov } 382619079203SIlya Dryomov ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, 382719079203SIlya Dryomov response_data), 382819079203SIlya Dryomov pages, PAGE_SIZE, 0, false, true); 382919079203SIlya Dryomov linger_submit(lreq); 383019079203SIlya Dryomov up_write(&osdc->lock); 383119079203SIlya Dryomov 383219079203SIlya Dryomov ret = linger_reg_commit_wait(lreq); 383319079203SIlya Dryomov if (!ret) 383419079203SIlya Dryomov ret = linger_notify_finish_wait(lreq); 383519079203SIlya Dryomov else 383619079203SIlya Dryomov dout("lreq %p failed to initiate notify %d\n", lreq, ret); 383719079203SIlya Dryomov 383819079203SIlya Dryomov linger_cancel(lreq); 383919079203SIlya Dryomov out_put_lreq: 384019079203SIlya Dryomov linger_put(lreq); 384119079203SIlya Dryomov return ret; 384219079203SIlya Dryomov } 384319079203SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify); 384419079203SIlya Dryomov 38453d14c5d2SYehuda Sadeh /* 3846b07d3c4bSIlya Dryomov * Return the number of milliseconds since the watch was last 3847b07d3c4bSIlya Dryomov * confirmed, or an error. If there is an error, the watch is no 3848b07d3c4bSIlya Dryomov * longer valid, and should be destroyed with ceph_osdc_unwatch(). 3849b07d3c4bSIlya Dryomov */ 3850b07d3c4bSIlya Dryomov int ceph_osdc_watch_check(struct ceph_osd_client *osdc, 3851b07d3c4bSIlya Dryomov struct ceph_osd_linger_request *lreq) 3852b07d3c4bSIlya Dryomov { 3853b07d3c4bSIlya Dryomov unsigned long stamp, age; 3854b07d3c4bSIlya Dryomov int ret; 3855b07d3c4bSIlya Dryomov 3856b07d3c4bSIlya Dryomov down_read(&osdc->lock); 3857b07d3c4bSIlya Dryomov mutex_lock(&lreq->lock); 3858b07d3c4bSIlya Dryomov stamp = lreq->watch_valid_thru; 3859b07d3c4bSIlya Dryomov if (!list_empty(&lreq->pending_lworks)) { 3860b07d3c4bSIlya Dryomov struct linger_work *lwork = 3861b07d3c4bSIlya Dryomov list_first_entry(&lreq->pending_lworks, 3862b07d3c4bSIlya Dryomov struct linger_work, 3863b07d3c4bSIlya Dryomov pending_item); 3864b07d3c4bSIlya Dryomov 3865b07d3c4bSIlya Dryomov if (time_before(lwork->queued_stamp, stamp)) 3866b07d3c4bSIlya Dryomov stamp = lwork->queued_stamp; 3867b07d3c4bSIlya Dryomov } 3868b07d3c4bSIlya Dryomov age = jiffies - stamp; 3869b07d3c4bSIlya Dryomov dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__, 3870b07d3c4bSIlya Dryomov lreq, lreq->linger_id, age, lreq->last_error); 3871b07d3c4bSIlya Dryomov /* we are truncating to msecs, so return a safe upper bound */ 3872b07d3c4bSIlya Dryomov ret = lreq->last_error ?: 1 + jiffies_to_msecs(age); 3873b07d3c4bSIlya Dryomov 3874b07d3c4bSIlya Dryomov mutex_unlock(&lreq->lock); 3875b07d3c4bSIlya Dryomov up_read(&osdc->lock); 3876b07d3c4bSIlya Dryomov return ret; 3877b07d3c4bSIlya Dryomov } 3878b07d3c4bSIlya Dryomov 3879b07d3c4bSIlya Dryomov /* 3880dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 3881dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 3882dd935f44SJosh Durgin */ 3883f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 3884dd935f44SJosh Durgin { 3885dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 3886dd935f44SJosh Durgin } 3887dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 3888dd935f44SJosh Durgin 38897cca78c9SIlya Dryomov void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc) 38907cca78c9SIlya Dryomov { 38917cca78c9SIlya Dryomov down_read(&osdc->lock); 38927cca78c9SIlya Dryomov maybe_request_map(osdc); 38937cca78c9SIlya Dryomov up_read(&osdc->lock); 38947cca78c9SIlya Dryomov } 38957cca78c9SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_maybe_request_map); 3896dd935f44SJosh Durgin 3897dd935f44SJosh Durgin /* 38983d14c5d2SYehuda Sadeh * init, shutdown 38993d14c5d2SYehuda Sadeh */ 39003d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 39013d14c5d2SYehuda Sadeh { 39023d14c5d2SYehuda Sadeh int err; 39033d14c5d2SYehuda Sadeh 39043d14c5d2SYehuda Sadeh dout("init\n"); 39053d14c5d2SYehuda Sadeh osdc->client = client; 39065aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 39073d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 39083d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 39099dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 39105aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 39115aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 39125aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 3913922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 39144609245eSIlya Dryomov osdc->map_checks = RB_ROOT; 39154609245eSIlya Dryomov osdc->linger_map_checks = RB_ROOT; 39163d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 39173d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 39183d14c5d2SYehuda Sadeh 39193d14c5d2SYehuda Sadeh err = -ENOMEM; 3920e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 3921e5253a7bSIlya Dryomov if (!osdc->osdmap) 3922e5253a7bSIlya Dryomov goto out; 3923e5253a7bSIlya Dryomov 39249e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 39259e767adbSIlya Dryomov ceph_osd_request_cache); 39263d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 3927e5253a7bSIlya Dryomov goto out_map; 39283d14c5d2SYehuda Sadeh 3929d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 3930711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 39313d14c5d2SYehuda Sadeh if (err < 0) 39323d14c5d2SYehuda Sadeh goto out_mempool; 3933d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 3934711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 39353d14c5d2SYehuda Sadeh if (err < 0) 39363d14c5d2SYehuda Sadeh goto out_msgpool; 3937a40c4f10SYehuda Sadeh 3938dbcae088SDan Carpenter err = -ENOMEM; 3939a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 3940dbcae088SDan Carpenter if (!osdc->notify_wq) 3941c172ec5cSIlya Dryomov goto out_msgpool_reply; 3942c172ec5cSIlya Dryomov 3943fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 3944fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 3945b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 3946b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 3947b37ee1b9SIlya Dryomov 39483d14c5d2SYehuda Sadeh return 0; 39493d14c5d2SYehuda Sadeh 3950c172ec5cSIlya Dryomov out_msgpool_reply: 3951c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 39523d14c5d2SYehuda Sadeh out_msgpool: 39533d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 39543d14c5d2SYehuda Sadeh out_mempool: 39553d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 3956e5253a7bSIlya Dryomov out_map: 3957e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 39583d14c5d2SYehuda Sadeh out: 39593d14c5d2SYehuda Sadeh return err; 39603d14c5d2SYehuda Sadeh } 39613d14c5d2SYehuda Sadeh 39623d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 39633d14c5d2SYehuda Sadeh { 3964a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 3965a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 39663d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 39673d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 396842a2c09fSIlya Dryomov 39695aea3dcdSIlya Dryomov down_write(&osdc->lock); 397042a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 397142a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 397242a2c09fSIlya Dryomov struct ceph_osd, o_node); 39735aea3dcdSIlya Dryomov close_osd(osd); 397442a2c09fSIlya Dryomov } 39755aea3dcdSIlya Dryomov up_write(&osdc->lock); 39765aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->homeless_osd.o_ref) != 1); 39775aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 39785aea3dcdSIlya Dryomov 39795aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 3980922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 39814609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks)); 39824609245eSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks)); 39835aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 39845aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 398542a2c09fSIlya Dryomov 39863d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 39873d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 39883d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 39893d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 39903d14c5d2SYehuda Sadeh } 39913d14c5d2SYehuda Sadeh 39923d14c5d2SYehuda Sadeh /* 39933d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 39943d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 39953d14c5d2SYehuda Sadeh */ 39963d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 39973d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 39983d14c5d2SYehuda Sadeh u64 off, u64 *plen, 39993d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 4000b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 40013d14c5d2SYehuda Sadeh { 40023d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 40033d14c5d2SYehuda Sadeh int rc = 0; 40043d14c5d2SYehuda Sadeh 40053d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 40063d14c5d2SYehuda Sadeh vino.snap, off, *plen); 4007715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 40083d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 4009acead002SAlex Elder NULL, truncate_seq, truncate_size, 4010153e5167SAlex Elder false); 40116816282dSSage Weil if (IS_ERR(req)) 40126816282dSSage Weil return PTR_ERR(req); 40133d14c5d2SYehuda Sadeh 40143d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 4015406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 4016a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 40173d14c5d2SYehuda Sadeh 4018e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 401943bfe5deSAlex Elder off, *plen, *plen, page_align); 40203d14c5d2SYehuda Sadeh 40213d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 40223d14c5d2SYehuda Sadeh if (!rc) 40233d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 40243d14c5d2SYehuda Sadeh 40253d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 40263d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 40273d14c5d2SYehuda Sadeh return rc; 40283d14c5d2SYehuda Sadeh } 40293d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 40303d14c5d2SYehuda Sadeh 40313d14c5d2SYehuda Sadeh /* 40323d14c5d2SYehuda Sadeh * do a synchronous write on N pages 40333d14c5d2SYehuda Sadeh */ 40343d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 40353d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 40363d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 40373d14c5d2SYehuda Sadeh u64 off, u64 len, 40383d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 40393d14c5d2SYehuda Sadeh struct timespec *mtime, 404024808826SAlex Elder struct page **pages, int num_pages) 40413d14c5d2SYehuda Sadeh { 40423d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 40433d14c5d2SYehuda Sadeh int rc = 0; 4044b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 40453d14c5d2SYehuda Sadeh 4046715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 40473d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 404824808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 4049acead002SAlex Elder snapc, truncate_seq, truncate_size, 4050153e5167SAlex Elder true); 40516816282dSSage Weil if (IS_ERR(req)) 40526816282dSSage Weil return PTR_ERR(req); 40533d14c5d2SYehuda Sadeh 40543d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 4055406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 405643bfe5deSAlex Elder false, false); 405743bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 40583d14c5d2SYehuda Sadeh 4059bb873b53SIlya Dryomov req->r_mtime = *mtime; 406087f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 40613d14c5d2SYehuda Sadeh if (!rc) 40623d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 40633d14c5d2SYehuda Sadeh 40643d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 40653d14c5d2SYehuda Sadeh if (rc == 0) 40663d14c5d2SYehuda Sadeh rc = len; 40673d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 40683d14c5d2SYehuda Sadeh return rc; 40693d14c5d2SYehuda Sadeh } 40703d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 40713d14c5d2SYehuda Sadeh 40725522ae0bSAlex Elder int ceph_osdc_setup(void) 40735522ae0bSAlex Elder { 40743f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 40753f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 40763f1af42aSIlya Dryomov 40775522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 40783f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 40793f1af42aSIlya Dryomov 0, 0, NULL); 40805522ae0bSAlex Elder 40815522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 40825522ae0bSAlex Elder } 40835522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 40845522ae0bSAlex Elder 40855522ae0bSAlex Elder void ceph_osdc_cleanup(void) 40865522ae0bSAlex Elder { 40875522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 40885522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 40895522ae0bSAlex Elder ceph_osd_request_cache = NULL; 40905522ae0bSAlex Elder } 40915522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 40925522ae0bSAlex Elder 40933d14c5d2SYehuda Sadeh /* 40943d14c5d2SYehuda Sadeh * handle incoming message 40953d14c5d2SYehuda Sadeh */ 40963d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 40973d14c5d2SYehuda Sadeh { 40983d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 40995aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 41003d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 41013d14c5d2SYehuda Sadeh 41023d14c5d2SYehuda Sadeh switch (type) { 41033d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 41043d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 41053d14c5d2SYehuda Sadeh break; 41063d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 41075aea3dcdSIlya Dryomov handle_reply(osd, msg); 41083d14c5d2SYehuda Sadeh break; 4109a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 4110a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 4111a40c4f10SYehuda Sadeh break; 41123d14c5d2SYehuda Sadeh 41133d14c5d2SYehuda Sadeh default: 41143d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 41153d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 41163d14c5d2SYehuda Sadeh } 41175aea3dcdSIlya Dryomov 41183d14c5d2SYehuda Sadeh ceph_msg_put(msg); 41193d14c5d2SYehuda Sadeh } 41203d14c5d2SYehuda Sadeh 41213d14c5d2SYehuda Sadeh /* 4122d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 4123d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 4124d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 41253d14c5d2SYehuda Sadeh */ 41263d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 41273d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 41283d14c5d2SYehuda Sadeh int *skip) 41293d14c5d2SYehuda Sadeh { 41303d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 41313d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 41325aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 41333d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 41343f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 41353d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 41365aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 41373d14c5d2SYehuda Sadeh 41385aea3dcdSIlya Dryomov down_read(&osdc->lock); 41395aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 41405aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 41415aea3dcdSIlya Dryomov *skip = 1; 41425aea3dcdSIlya Dryomov goto out_unlock_osdc; 41435aea3dcdSIlya Dryomov } 41445aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 41455aea3dcdSIlya Dryomov 41465aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 41475aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 41483d14c5d2SYehuda Sadeh if (!req) { 4149cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 4150cd8140c6SIlya Dryomov osd->o_osd, tid); 4151d15f9d69SIlya Dryomov *skip = 1; 41525aea3dcdSIlya Dryomov goto out_unlock_session; 41533d14c5d2SYehuda Sadeh } 41543d14c5d2SYehuda Sadeh 41558921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 41563d14c5d2SYehuda Sadeh 4157f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 4158d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 4159d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 4160d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 41613f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 41623f0a4ac5SIlya Dryomov false); 41633d14c5d2SYehuda Sadeh if (!m) 41645aea3dcdSIlya Dryomov goto out_unlock_session; 41653d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 41663d14c5d2SYehuda Sadeh req->r_reply = m; 41673d14c5d2SYehuda Sadeh } 41683d14c5d2SYehuda Sadeh 4169d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 4170d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 4171d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 4172d15f9d69SIlya Dryomov req->r_reply->data_length); 41733d14c5d2SYehuda Sadeh m = NULL; 4174d15f9d69SIlya Dryomov *skip = 1; 41755aea3dcdSIlya Dryomov goto out_unlock_session; 41763d14c5d2SYehuda Sadeh } 4177d15f9d69SIlya Dryomov 4178d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 41793d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 41803d14c5d2SYehuda Sadeh 41815aea3dcdSIlya Dryomov out_unlock_session: 41825aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 41835aea3dcdSIlya Dryomov out_unlock_osdc: 41845aea3dcdSIlya Dryomov up_read(&osdc->lock); 41853d14c5d2SYehuda Sadeh return m; 41863d14c5d2SYehuda Sadeh } 41873d14c5d2SYehuda Sadeh 418819079203SIlya Dryomov /* 418919079203SIlya Dryomov * TODO: switch to a msg-owned pagelist 419019079203SIlya Dryomov */ 419119079203SIlya Dryomov static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) 419219079203SIlya Dryomov { 419319079203SIlya Dryomov struct ceph_msg *m; 419419079203SIlya Dryomov int type = le16_to_cpu(hdr->type); 419519079203SIlya Dryomov u32 front_len = le32_to_cpu(hdr->front_len); 419619079203SIlya Dryomov u32 data_len = le32_to_cpu(hdr->data_len); 419719079203SIlya Dryomov 419819079203SIlya Dryomov m = ceph_msg_new(type, front_len, GFP_NOIO, false); 419919079203SIlya Dryomov if (!m) 420019079203SIlya Dryomov return NULL; 420119079203SIlya Dryomov 420219079203SIlya Dryomov if (data_len) { 420319079203SIlya Dryomov struct page **pages; 420419079203SIlya Dryomov struct ceph_osd_data osd_data; 420519079203SIlya Dryomov 420619079203SIlya Dryomov pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), 420719079203SIlya Dryomov GFP_NOIO); 420819079203SIlya Dryomov if (!pages) { 420919079203SIlya Dryomov ceph_msg_put(m); 421019079203SIlya Dryomov return NULL; 421119079203SIlya Dryomov } 421219079203SIlya Dryomov 421319079203SIlya Dryomov ceph_osd_data_pages_init(&osd_data, pages, data_len, 0, false, 421419079203SIlya Dryomov false); 421519079203SIlya Dryomov ceph_osdc_msg_data_add(m, &osd_data); 421619079203SIlya Dryomov } 421719079203SIlya Dryomov 421819079203SIlya Dryomov return m; 421919079203SIlya Dryomov } 422019079203SIlya Dryomov 42213d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 42223d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 42233d14c5d2SYehuda Sadeh int *skip) 42243d14c5d2SYehuda Sadeh { 42253d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 42263d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 42273d14c5d2SYehuda Sadeh 42281c20f2d2SAlex Elder *skip = 0; 42293d14c5d2SYehuda Sadeh switch (type) { 42303d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 4231a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 423219079203SIlya Dryomov return alloc_msg_with_page_vector(hdr); 42333d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 42343d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 42353d14c5d2SYehuda Sadeh default: 42365aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 42375aea3dcdSIlya Dryomov osd->o_osd, type); 42383d14c5d2SYehuda Sadeh *skip = 1; 42393d14c5d2SYehuda Sadeh return NULL; 42403d14c5d2SYehuda Sadeh } 42413d14c5d2SYehuda Sadeh } 42423d14c5d2SYehuda Sadeh 42433d14c5d2SYehuda Sadeh /* 42443d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 42453d14c5d2SYehuda Sadeh */ 42463d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 42473d14c5d2SYehuda Sadeh { 42483d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 42493d14c5d2SYehuda Sadeh if (get_osd(osd)) 42503d14c5d2SYehuda Sadeh return con; 42513d14c5d2SYehuda Sadeh return NULL; 42523d14c5d2SYehuda Sadeh } 42533d14c5d2SYehuda Sadeh 42543d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 42553d14c5d2SYehuda Sadeh { 42563d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 42573d14c5d2SYehuda Sadeh put_osd(osd); 42583d14c5d2SYehuda Sadeh } 42593d14c5d2SYehuda Sadeh 42603d14c5d2SYehuda Sadeh /* 42613d14c5d2SYehuda Sadeh * authentication 42623d14c5d2SYehuda Sadeh */ 4263a3530df3SAlex Elder /* 4264a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 4265a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 4266a3530df3SAlex Elder */ 4267a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 42688f43fb53SAlex Elder int *proto, int force_new) 42693d14c5d2SYehuda Sadeh { 42703d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 42713d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 42723d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 427374f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 42743d14c5d2SYehuda Sadeh 427574f1869fSAlex Elder if (force_new && auth->authorizer) { 42766c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 427774f1869fSAlex Elder auth->authorizer = NULL; 42783d14c5d2SYehuda Sadeh } 427927859f97SSage Weil if (!auth->authorizer) { 428027859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 4281a3530df3SAlex Elder auth); 42823d14c5d2SYehuda Sadeh if (ret) 4283a3530df3SAlex Elder return ERR_PTR(ret); 428427859f97SSage Weil } else { 428527859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 42860bed9b5cSSage Weil auth); 42870bed9b5cSSage Weil if (ret) 42880bed9b5cSSage Weil return ERR_PTR(ret); 42893d14c5d2SYehuda Sadeh } 42903d14c5d2SYehuda Sadeh *proto = ac->protocol; 429174f1869fSAlex Elder 4292a3530df3SAlex Elder return auth; 42933d14c5d2SYehuda Sadeh } 42943d14c5d2SYehuda Sadeh 42953d14c5d2SYehuda Sadeh 42963d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 42973d14c5d2SYehuda Sadeh { 42983d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 42993d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 43003d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 43013d14c5d2SYehuda Sadeh 430227859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 43033d14c5d2SYehuda Sadeh } 43043d14c5d2SYehuda Sadeh 43053d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 43063d14c5d2SYehuda Sadeh { 43073d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 43083d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 43093d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 43103d14c5d2SYehuda Sadeh 431127859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 43123d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 43133d14c5d2SYehuda Sadeh } 43143d14c5d2SYehuda Sadeh 431579dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 431633d07337SYan, Zheng { 431779dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 431833d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 431979dbd1baSIlya Dryomov 432033d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 432133d07337SYan, Zheng } 432233d07337SYan, Zheng 432379dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 432433d07337SYan, Zheng { 432579dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 432633d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 432779dbd1baSIlya Dryomov 432833d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 432933d07337SYan, Zheng } 433033d07337SYan, Zheng 43313d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 43323d14c5d2SYehuda Sadeh .get = get_osd_con, 43333d14c5d2SYehuda Sadeh .put = put_osd_con, 43343d14c5d2SYehuda Sadeh .dispatch = dispatch, 43353d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 43363d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 43373d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 43383d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 433979dbd1baSIlya Dryomov .sign_message = osd_sign_message, 434079dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 43415aea3dcdSIlya Dryomov .fault = osd_fault, 43423d14c5d2SYehuda Sadeh }; 4343