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; 3375476492fSAlex Elder default: 3385476492fSAlex Elder break; 3395476492fSAlex Elder } 340c54d47bfSAlex Elder } 341c54d47bfSAlex Elder 3423d14c5d2SYehuda Sadeh /* 34363244fa1SIlya Dryomov * Assumes @t is zero-initialized. 34463244fa1SIlya Dryomov */ 34563244fa1SIlya Dryomov static void target_init(struct ceph_osd_request_target *t) 34663244fa1SIlya Dryomov { 34763244fa1SIlya Dryomov ceph_oid_init(&t->base_oid); 34863244fa1SIlya Dryomov ceph_oloc_init(&t->base_oloc); 34963244fa1SIlya Dryomov ceph_oid_init(&t->target_oid); 35063244fa1SIlya Dryomov ceph_oloc_init(&t->target_oloc); 35163244fa1SIlya Dryomov 35263244fa1SIlya Dryomov ceph_osds_init(&t->acting); 35363244fa1SIlya Dryomov ceph_osds_init(&t->up); 35463244fa1SIlya Dryomov t->size = -1; 35563244fa1SIlya Dryomov t->min_size = -1; 35663244fa1SIlya Dryomov 35763244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 35863244fa1SIlya Dryomov } 35963244fa1SIlya Dryomov 360922dab61SIlya Dryomov static void target_copy(struct ceph_osd_request_target *dest, 361922dab61SIlya Dryomov const struct ceph_osd_request_target *src) 362922dab61SIlya Dryomov { 363922dab61SIlya Dryomov ceph_oid_copy(&dest->base_oid, &src->base_oid); 364922dab61SIlya Dryomov ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); 365922dab61SIlya Dryomov ceph_oid_copy(&dest->target_oid, &src->target_oid); 366922dab61SIlya Dryomov ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); 367922dab61SIlya Dryomov 368922dab61SIlya Dryomov dest->pgid = src->pgid; /* struct */ 369922dab61SIlya Dryomov dest->pg_num = src->pg_num; 370922dab61SIlya Dryomov dest->pg_num_mask = src->pg_num_mask; 371922dab61SIlya Dryomov ceph_osds_copy(&dest->acting, &src->acting); 372922dab61SIlya Dryomov ceph_osds_copy(&dest->up, &src->up); 373922dab61SIlya Dryomov dest->size = src->size; 374922dab61SIlya Dryomov dest->min_size = src->min_size; 375922dab61SIlya Dryomov dest->sort_bitwise = src->sort_bitwise; 376922dab61SIlya Dryomov 377922dab61SIlya Dryomov dest->flags = src->flags; 378922dab61SIlya Dryomov dest->paused = src->paused; 379922dab61SIlya Dryomov 380922dab61SIlya Dryomov dest->osd = src->osd; 381922dab61SIlya Dryomov } 382922dab61SIlya Dryomov 38363244fa1SIlya Dryomov static void target_destroy(struct ceph_osd_request_target *t) 38463244fa1SIlya Dryomov { 38563244fa1SIlya Dryomov ceph_oid_destroy(&t->base_oid); 38663244fa1SIlya Dryomov ceph_oid_destroy(&t->target_oid); 38763244fa1SIlya Dryomov } 38863244fa1SIlya Dryomov 38963244fa1SIlya Dryomov /* 3903d14c5d2SYehuda Sadeh * requests 3913d14c5d2SYehuda Sadeh */ 3923540bfdbSIlya Dryomov static void request_release_checks(struct ceph_osd_request *req) 3933540bfdbSIlya Dryomov { 3943540bfdbSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 3953540bfdbSIlya Dryomov WARN_ON(!list_empty(&req->r_unsafe_item)); 3963540bfdbSIlya Dryomov WARN_ON(req->r_osd); 3973540bfdbSIlya Dryomov } 3983540bfdbSIlya Dryomov 3999e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 4003d14c5d2SYehuda Sadeh { 4019e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 4029e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 4035476492fSAlex Elder unsigned int which; 4043d14c5d2SYehuda Sadeh 4059e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 4069e94af20SIlya Dryomov req->r_request, req->r_reply); 4073540bfdbSIlya Dryomov request_release_checks(req); 4089e94af20SIlya Dryomov 4093d14c5d2SYehuda Sadeh if (req->r_request) 4103d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 4115aea3dcdSIlya Dryomov if (req->r_reply) 412ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 4130fff87ecSAlex Elder 4145476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 4155476492fSAlex Elder osd_req_op_data_release(req, which); 4160fff87ecSAlex Elder 417a66dd383SIlya Dryomov target_destroy(&req->r_t); 4183d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 419d30291b9SIlya Dryomov 4203d14c5d2SYehuda Sadeh if (req->r_mempool) 4213d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 4223f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 4235522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 4243f1af42aSIlya Dryomov else 4253f1af42aSIlya Dryomov kfree(req); 4263d14c5d2SYehuda Sadeh } 4279e94af20SIlya Dryomov 4289e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 4299e94af20SIlya Dryomov { 4309e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 4319e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 4329e94af20SIlya Dryomov kref_get(&req->r_kref); 4339e94af20SIlya Dryomov } 4349e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 4359e94af20SIlya Dryomov 4369e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 4379e94af20SIlya Dryomov { 4383ed97d63SIlya Dryomov if (req) { 4399e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 4409e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 4419e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 4429e94af20SIlya Dryomov } 4433ed97d63SIlya Dryomov } 4449e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 4453d14c5d2SYehuda Sadeh 4463540bfdbSIlya Dryomov static void request_init(struct ceph_osd_request *req) 4473540bfdbSIlya Dryomov { 4483540bfdbSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 4493540bfdbSIlya Dryomov memset(req, 0, sizeof(*req)); 4503540bfdbSIlya Dryomov 4513540bfdbSIlya Dryomov kref_init(&req->r_kref); 4523540bfdbSIlya Dryomov init_completion(&req->r_completion); 4533540bfdbSIlya Dryomov init_completion(&req->r_safe_completion); 4543540bfdbSIlya Dryomov RB_CLEAR_NODE(&req->r_node); 4553540bfdbSIlya Dryomov INIT_LIST_HEAD(&req->r_unsafe_item); 4563540bfdbSIlya Dryomov 4573540bfdbSIlya Dryomov target_init(&req->r_t); 4583540bfdbSIlya Dryomov } 4593540bfdbSIlya Dryomov 460922dab61SIlya Dryomov /* 461922dab61SIlya Dryomov * This is ugly, but it allows us to reuse linger registration and ping 462922dab61SIlya Dryomov * requests, keeping the structure of the code around send_linger{_ping}() 463922dab61SIlya Dryomov * reasonable. Setting up a min_nr=2 mempool for each linger request 464922dab61SIlya Dryomov * and dealing with copying ops (this blasts req only, watch op remains 465922dab61SIlya Dryomov * intact) isn't any better. 466922dab61SIlya Dryomov */ 467922dab61SIlya Dryomov static void request_reinit(struct ceph_osd_request *req) 468922dab61SIlya Dryomov { 469922dab61SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 470922dab61SIlya Dryomov bool mempool = req->r_mempool; 471922dab61SIlya Dryomov unsigned int num_ops = req->r_num_ops; 472922dab61SIlya Dryomov u64 snapid = req->r_snapid; 473922dab61SIlya Dryomov struct ceph_snap_context *snapc = req->r_snapc; 474922dab61SIlya Dryomov bool linger = req->r_linger; 475922dab61SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 476922dab61SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 477922dab61SIlya Dryomov 478922dab61SIlya Dryomov dout("%s req %p\n", __func__, req); 479922dab61SIlya Dryomov WARN_ON(atomic_read(&req->r_kref.refcount) != 1); 480922dab61SIlya Dryomov request_release_checks(req); 481922dab61SIlya Dryomov 482922dab61SIlya Dryomov WARN_ON(atomic_read(&request_msg->kref.refcount) != 1); 483922dab61SIlya Dryomov WARN_ON(atomic_read(&reply_msg->kref.refcount) != 1); 484922dab61SIlya Dryomov target_destroy(&req->r_t); 485922dab61SIlya Dryomov 486922dab61SIlya Dryomov request_init(req); 487922dab61SIlya Dryomov req->r_osdc = osdc; 488922dab61SIlya Dryomov req->r_mempool = mempool; 489922dab61SIlya Dryomov req->r_num_ops = num_ops; 490922dab61SIlya Dryomov req->r_snapid = snapid; 491922dab61SIlya Dryomov req->r_snapc = snapc; 492922dab61SIlya Dryomov req->r_linger = linger; 493922dab61SIlya Dryomov req->r_request = request_msg; 494922dab61SIlya Dryomov req->r_reply = reply_msg; 495922dab61SIlya Dryomov } 496922dab61SIlya Dryomov 4973d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 4983d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 4991b83bef2SSage Weil unsigned int num_ops, 5003d14c5d2SYehuda Sadeh bool use_mempool, 50154a54007SAlex Elder gfp_t gfp_flags) 5023d14c5d2SYehuda Sadeh { 5033d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5043d14c5d2SYehuda Sadeh 5053d14c5d2SYehuda Sadeh if (use_mempool) { 5063f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 5073d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 5083f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 5093f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 5103d14c5d2SYehuda Sadeh } else { 5113f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 5123f1af42aSIlya Dryomov req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), 5133f1af42aSIlya Dryomov gfp_flags); 5143d14c5d2SYehuda Sadeh } 5153f1af42aSIlya Dryomov if (unlikely(!req)) 5163d14c5d2SYehuda Sadeh return NULL; 5173d14c5d2SYehuda Sadeh 5183540bfdbSIlya Dryomov request_init(req); 5193d14c5d2SYehuda Sadeh req->r_osdc = osdc; 5203d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 52179528734SAlex Elder req->r_num_ops = num_ops; 52284127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 52384127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 5243d14c5d2SYehuda Sadeh 52513d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 52613d1ad16SIlya Dryomov return req; 5273f1af42aSIlya Dryomov } 52813d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 5293f1af42aSIlya Dryomov 53013d1ad16SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 53113d1ad16SIlya Dryomov { 53213d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 53313d1ad16SIlya Dryomov struct ceph_msg *msg; 53413d1ad16SIlya Dryomov int msg_size; 5353d14c5d2SYehuda Sadeh 536d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 537d30291b9SIlya Dryomov 53813d1ad16SIlya Dryomov /* create request message */ 539ae458f5aSIlya Dryomov msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ 540ae458f5aSIlya Dryomov msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ 541ae458f5aSIlya Dryomov msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 542ae458f5aSIlya Dryomov msg_size += 1 + 8 + 4 + 4; /* pgid */ 54313d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 54413d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 545ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 546ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 54713d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 548ae458f5aSIlya Dryomov msg_size += 4; /* retry_attempt */ 549ae458f5aSIlya Dryomov 55013d1ad16SIlya Dryomov if (req->r_mempool) 5513d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 5523d14c5d2SYehuda Sadeh else 55313d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); 55413d1ad16SIlya Dryomov if (!msg) 55513d1ad16SIlya Dryomov return -ENOMEM; 5563d14c5d2SYehuda Sadeh 5573d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 5583d14c5d2SYehuda Sadeh req->r_request = msg; 5593d14c5d2SYehuda Sadeh 56013d1ad16SIlya Dryomov /* create reply message */ 56113d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 562711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 563711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 56413d1ad16SIlya Dryomov 56513d1ad16SIlya Dryomov if (req->r_mempool) 56613d1ad16SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 56713d1ad16SIlya Dryomov else 56813d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); 56913d1ad16SIlya Dryomov if (!msg) 57013d1ad16SIlya Dryomov return -ENOMEM; 57113d1ad16SIlya Dryomov 57213d1ad16SIlya Dryomov req->r_reply = msg; 57313d1ad16SIlya Dryomov 57413d1ad16SIlya Dryomov return 0; 57513d1ad16SIlya Dryomov } 57613d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 5773d14c5d2SYehuda Sadeh 578a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 579a8dd0a37SAlex Elder { 580a8dd0a37SAlex Elder switch (opcode) { 58170b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 58270b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 58370b5bfa3SIlya Dryomov #undef GENERATE_CASE 584a8dd0a37SAlex Elder default: 585a8dd0a37SAlex Elder return false; 586a8dd0a37SAlex Elder } 587a8dd0a37SAlex Elder } 588a8dd0a37SAlex Elder 58933803f33SAlex Elder /* 59033803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 59133803f33SAlex Elder * other information associated with them. It also serves as a 59233803f33SAlex Elder * common init routine for all the other init functions, below. 59333803f33SAlex Elder */ 594c99d2d4aSAlex Elder static struct ceph_osd_req_op * 59549719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 596144cba14SYan, Zheng u16 opcode, u32 flags) 59733803f33SAlex Elder { 598c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 599c99d2d4aSAlex Elder 600c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 60133803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 60233803f33SAlex Elder 603c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 60433803f33SAlex Elder memset(op, 0, sizeof (*op)); 60533803f33SAlex Elder op->op = opcode; 606144cba14SYan, Zheng op->flags = flags; 607c99d2d4aSAlex Elder 608c99d2d4aSAlex Elder return op; 60933803f33SAlex Elder } 61033803f33SAlex Elder 61149719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 612144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 61349719778SAlex Elder { 614144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 61549719778SAlex Elder } 61649719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 61749719778SAlex Elder 618c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 619c99d2d4aSAlex Elder unsigned int which, u16 opcode, 62033803f33SAlex Elder u64 offset, u64 length, 62133803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 62233803f33SAlex Elder { 623144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 624144cba14SYan, Zheng opcode, 0); 62533803f33SAlex Elder size_t payload_len = 0; 62633803f33SAlex Elder 627ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 628e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 629e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 63033803f33SAlex Elder 63133803f33SAlex Elder op->extent.offset = offset; 63233803f33SAlex Elder op->extent.length = length; 63333803f33SAlex Elder op->extent.truncate_size = truncate_size; 63433803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 635e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 63633803f33SAlex Elder payload_len += length; 63733803f33SAlex Elder 638de2aa102SIlya Dryomov op->indata_len = payload_len; 63933803f33SAlex Elder } 64033803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 64133803f33SAlex Elder 642c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 643c99d2d4aSAlex Elder unsigned int which, u64 length) 644e5975c7cSAlex Elder { 645c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 646c99d2d4aSAlex Elder u64 previous; 647c99d2d4aSAlex Elder 648c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 649c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 650c99d2d4aSAlex Elder previous = op->extent.length; 651e5975c7cSAlex Elder 652e5975c7cSAlex Elder if (length == previous) 653e5975c7cSAlex Elder return; /* Nothing to do */ 654e5975c7cSAlex Elder BUG_ON(length > previous); 655e5975c7cSAlex Elder 656e5975c7cSAlex Elder op->extent.length = length; 657de2aa102SIlya Dryomov op->indata_len -= previous - length; 658e5975c7cSAlex Elder } 659e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 660e5975c7cSAlex Elder 6612c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 6622c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 6632c63f49aSYan, Zheng { 6642c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 6652c63f49aSYan, Zheng 6662c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 6672c63f49aSYan, Zheng 6682c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 6692c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 6702c63f49aSYan, Zheng /* dup previous one */ 6712c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 6722c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 6732c63f49aSYan, Zheng op->extent = prev_op->extent; 6742c63f49aSYan, Zheng /* adjust offset */ 6752c63f49aSYan, Zheng op->extent.offset += offset_inc; 6762c63f49aSYan, Zheng op->extent.length -= offset_inc; 6772c63f49aSYan, Zheng 6782c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 6792c63f49aSYan, Zheng op->indata_len -= offset_inc; 6802c63f49aSYan, Zheng } 6812c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 6822c63f49aSYan, Zheng 683c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 68404017e29SAlex Elder u16 opcode, const char *class, const char *method) 68533803f33SAlex Elder { 686144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 687144cba14SYan, Zheng opcode, 0); 6885f562df5SAlex Elder struct ceph_pagelist *pagelist; 68933803f33SAlex Elder size_t payload_len = 0; 69033803f33SAlex Elder size_t size; 69133803f33SAlex Elder 69233803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 69333803f33SAlex Elder 6945f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 6955f562df5SAlex Elder BUG_ON(!pagelist); 6965f562df5SAlex Elder ceph_pagelist_init(pagelist); 6975f562df5SAlex Elder 69833803f33SAlex Elder op->cls.class_name = class; 69933803f33SAlex Elder size = strlen(class); 70033803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 70133803f33SAlex Elder op->cls.class_len = size; 7025f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 70333803f33SAlex Elder payload_len += size; 70433803f33SAlex Elder 70533803f33SAlex Elder op->cls.method_name = method; 70633803f33SAlex Elder size = strlen(method); 70733803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 70833803f33SAlex Elder op->cls.method_len = size; 7095f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 71033803f33SAlex Elder payload_len += size; 71133803f33SAlex Elder 712a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 7135f562df5SAlex Elder 714de2aa102SIlya Dryomov op->indata_len = payload_len; 71533803f33SAlex Elder } 71633803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 7178c042b0dSAlex Elder 718d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 719d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 720d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 721d74b50beSYan, Zheng { 722144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 723144cba14SYan, Zheng opcode, 0); 724d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 725d74b50beSYan, Zheng size_t payload_len; 726d74b50beSYan, Zheng 727d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 728d74b50beSYan, Zheng 729d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 730d74b50beSYan, Zheng if (!pagelist) 731d74b50beSYan, Zheng return -ENOMEM; 732d74b50beSYan, Zheng 733d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 734d74b50beSYan, Zheng 735d74b50beSYan, Zheng payload_len = strlen(name); 736d74b50beSYan, Zheng op->xattr.name_len = payload_len; 737d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 738d74b50beSYan, Zheng 739d74b50beSYan, Zheng op->xattr.value_len = size; 740d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 741d74b50beSYan, Zheng payload_len += size; 742d74b50beSYan, Zheng 743d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 744d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 745d74b50beSYan, Zheng 746d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 747de2aa102SIlya Dryomov op->indata_len = payload_len; 748d74b50beSYan, Zheng return 0; 749d74b50beSYan, Zheng } 750d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 751d74b50beSYan, Zheng 752922dab61SIlya Dryomov /* 753922dab61SIlya Dryomov * @watch_opcode: CEPH_OSD_WATCH_OP_* 754922dab61SIlya Dryomov */ 755922dab61SIlya Dryomov static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, 756922dab61SIlya Dryomov u64 cookie, u8 watch_opcode) 75733803f33SAlex Elder { 758922dab61SIlya Dryomov struct ceph_osd_req_op *op; 75933803f33SAlex Elder 760922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); 76133803f33SAlex Elder op->watch.cookie = cookie; 762922dab61SIlya Dryomov op->watch.op = watch_opcode; 763922dab61SIlya Dryomov op->watch.gen = 0; 76433803f33SAlex Elder } 76533803f33SAlex Elder 766c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 767c647b8a8SIlya Dryomov unsigned int which, 768c647b8a8SIlya Dryomov u64 expected_object_size, 769c647b8a8SIlya Dryomov u64 expected_write_size) 770c647b8a8SIlya Dryomov { 771c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 772144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 773144cba14SYan, Zheng 0); 774c647b8a8SIlya Dryomov 775c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 776c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 777c647b8a8SIlya Dryomov 778c647b8a8SIlya Dryomov /* 779c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 780c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 781c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 782c647b8a8SIlya Dryomov */ 783c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 784c647b8a8SIlya Dryomov } 785c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 786c647b8a8SIlya Dryomov 78790af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 788ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 789ec9123c5SAlex Elder { 790ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 791ec9123c5SAlex Elder 792ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 793ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 794ec9123c5SAlex Elder if (length) 79590af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 796ec9123c5SAlex Elder length, osd_data->alignment); 797ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 798ec9123c5SAlex Elder BUG_ON(!length); 79990af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 800ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 801ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 80290af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 803ec9123c5SAlex Elder #endif 804ec9123c5SAlex Elder } else { 805ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 806ec9123c5SAlex Elder } 807ec9123c5SAlex Elder } 808ec9123c5SAlex Elder 809bb873b53SIlya Dryomov static u32 osd_req_encode_op(struct ceph_osd_op *dst, 810bb873b53SIlya Dryomov const struct ceph_osd_req_op *src) 8113d14c5d2SYehuda Sadeh { 812a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 813a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 814a8dd0a37SAlex Elder 815a8dd0a37SAlex Elder return 0; 816a8dd0a37SAlex Elder } 8173d14c5d2SYehuda Sadeh 818065a68f9SAlex Elder switch (src->op) { 819fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 820fbfab539SAlex Elder break; 8213d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 8223d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 823e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 824ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 825ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 826175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 827175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 8283d14c5d2SYehuda Sadeh dst->extent.truncate_size = 8293d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 8303d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 8313d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 8323d14c5d2SYehuda Sadeh break; 8333d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 8343d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 8353d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 836bb873b53SIlya Dryomov dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 8373d14c5d2SYehuda Sadeh break; 8383d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 8393d14c5d2SYehuda Sadeh break; 840a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 841a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 842922dab61SIlya Dryomov dst->watch.ver = cpu_to_le64(0); 843922dab61SIlya Dryomov dst->watch.op = src->watch.op; 844922dab61SIlya Dryomov dst->watch.gen = cpu_to_le32(src->watch.gen); 845922dab61SIlya Dryomov break; 846922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 847a40c4f10SYehuda Sadeh break; 848c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 849c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 850c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 851c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 852c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 853c647b8a8SIlya Dryomov break; 854d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 855d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 856d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 857d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 858d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 859d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 860d74b50beSYan, Zheng break; 861864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 862864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 863864e9197SYan, Zheng break; 8643d14c5d2SYehuda Sadeh default: 8654c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 8668f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 8674c46459cSAlex Elder WARN_ON(1); 868a8dd0a37SAlex Elder 869a8dd0a37SAlex Elder return 0; 8703d14c5d2SYehuda Sadeh } 8717b25bf5fSIlya Dryomov 872a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 8737b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 874de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 875175face2SAlex Elder 876bb873b53SIlya Dryomov return src->indata_len; 8773d14c5d2SYehuda Sadeh } 8783d14c5d2SYehuda Sadeh 8793d14c5d2SYehuda Sadeh /* 8803d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 8813d14c5d2SYehuda Sadeh * extent as needed. 8823d14c5d2SYehuda Sadeh * 8833d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 8843d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 8853d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 8863d14c5d2SYehuda Sadeh * 8873d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 8883d14c5d2SYehuda Sadeh * data quickly. 8893d14c5d2SYehuda Sadeh */ 8903d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 8913d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 8923d14c5d2SYehuda Sadeh struct ceph_vino vino, 893715e4cd4SYan, Zheng u64 off, u64 *plen, 894715e4cd4SYan, Zheng unsigned int which, int num_ops, 8953d14c5d2SYehuda Sadeh int opcode, int flags, 8963d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 8973d14c5d2SYehuda Sadeh u32 truncate_seq, 8983d14c5d2SYehuda Sadeh u64 truncate_size, 899153e5167SAlex Elder bool use_mempool) 9003d14c5d2SYehuda Sadeh { 9013d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 90275d1c941SAlex Elder u64 objnum = 0; 90375d1c941SAlex Elder u64 objoff = 0; 90475d1c941SAlex Elder u64 objlen = 0; 9056816282dSSage Weil int r; 9063d14c5d2SYehuda Sadeh 907ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 908864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 909864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 9103d14c5d2SYehuda Sadeh 911acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 912ae7ca4a3SAlex Elder GFP_NOFS); 91313d1ad16SIlya Dryomov if (!req) { 91413d1ad16SIlya Dryomov r = -ENOMEM; 91513d1ad16SIlya Dryomov goto fail; 91613d1ad16SIlya Dryomov } 91779528734SAlex Elder 9183d14c5d2SYehuda Sadeh /* calculate max write size */ 919a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 92013d1ad16SIlya Dryomov if (r) 92113d1ad16SIlya Dryomov goto fail; 922a19dadfbSAlex Elder 923864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 924144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 925864e9197SYan, Zheng } else { 926864e9197SYan, Zheng u32 object_size = le32_to_cpu(layout->fl_object_size); 927864e9197SYan, Zheng u32 object_base = off - objoff; 928ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 929d18d1e28SAlex Elder if (truncate_size <= object_base) { 930d18d1e28SAlex Elder truncate_size = 0; 931d18d1e28SAlex Elder } else { 932d18d1e28SAlex Elder truncate_size -= object_base; 933d18d1e28SAlex Elder if (truncate_size > object_size) 934d18d1e28SAlex Elder truncate_size = object_size; 935d18d1e28SAlex Elder } 936ccca4e37SYan, Zheng } 937715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 938b0270324SAlex Elder truncate_size, truncate_seq); 939864e9197SYan, Zheng } 940d18d1e28SAlex Elder 941bb873b53SIlya Dryomov req->r_flags = flags; 9423c972c95SIlya Dryomov req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); 943d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 944dbe0fc41SAlex Elder 945bb873b53SIlya Dryomov req->r_snapid = vino.snap; 946bb873b53SIlya Dryomov if (flags & CEPH_OSD_FLAG_WRITE) 947bb873b53SIlya Dryomov req->r_data_offset = off; 948bb873b53SIlya Dryomov 94913d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 95013d1ad16SIlya Dryomov if (r) 95113d1ad16SIlya Dryomov goto fail; 95213d1ad16SIlya Dryomov 9533d14c5d2SYehuda Sadeh return req; 95413d1ad16SIlya Dryomov 95513d1ad16SIlya Dryomov fail: 95613d1ad16SIlya Dryomov ceph_osdc_put_request(req); 95713d1ad16SIlya Dryomov return ERR_PTR(r); 9583d14c5d2SYehuda Sadeh } 9593d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 9603d14c5d2SYehuda Sadeh 9613d14c5d2SYehuda Sadeh /* 9623d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 9633d14c5d2SYehuda Sadeh */ 964fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 9653d14c5d2SYehuda Sadeh 9660247a0cfSIlya Dryomov static bool osd_homeless(struct ceph_osd *osd) 9670247a0cfSIlya Dryomov { 9680247a0cfSIlya Dryomov return osd->o_osd == CEPH_HOMELESS_OSD; 9690247a0cfSIlya Dryomov } 9700247a0cfSIlya Dryomov 9715aea3dcdSIlya Dryomov static bool osd_registered(struct ceph_osd *osd) 9723d14c5d2SYehuda Sadeh { 9735aea3dcdSIlya Dryomov verify_osdc_locked(osd->o_osdc); 9743d14c5d2SYehuda Sadeh 9755aea3dcdSIlya Dryomov return !RB_EMPTY_NODE(&osd->o_node); 9763d14c5d2SYehuda Sadeh } 9773d14c5d2SYehuda Sadeh 9783d14c5d2SYehuda Sadeh /* 9790247a0cfSIlya Dryomov * Assumes @osd is zero-initialized. 9800247a0cfSIlya Dryomov */ 9810247a0cfSIlya Dryomov static void osd_init(struct ceph_osd *osd) 9820247a0cfSIlya Dryomov { 9830247a0cfSIlya Dryomov atomic_set(&osd->o_ref, 1); 9840247a0cfSIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 9855aea3dcdSIlya Dryomov osd->o_requests = RB_ROOT; 986922dab61SIlya Dryomov osd->o_linger_requests = RB_ROOT; 9870247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_osd_lru); 9880247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_keepalive_item); 9890247a0cfSIlya Dryomov osd->o_incarnation = 1; 9905aea3dcdSIlya Dryomov mutex_init(&osd->lock); 9910247a0cfSIlya Dryomov } 9920247a0cfSIlya Dryomov 9930247a0cfSIlya Dryomov static void osd_cleanup(struct ceph_osd *osd) 9940247a0cfSIlya Dryomov { 9950247a0cfSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); 9965aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 997922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 9980247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_osd_lru)); 9990247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_keepalive_item)); 10000247a0cfSIlya Dryomov 10010247a0cfSIlya Dryomov if (osd->o_auth.authorizer) { 10020247a0cfSIlya Dryomov WARN_ON(osd_homeless(osd)); 10030247a0cfSIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 10040247a0cfSIlya Dryomov } 10050247a0cfSIlya Dryomov } 10060247a0cfSIlya Dryomov 10070247a0cfSIlya Dryomov /* 10083d14c5d2SYehuda Sadeh * Track open sessions with osds. 10093d14c5d2SYehuda Sadeh */ 1010e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10113d14c5d2SYehuda Sadeh { 10123d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10133d14c5d2SYehuda Sadeh 10140247a0cfSIlya Dryomov WARN_ON(onum == CEPH_HOMELESS_OSD); 10150247a0cfSIlya Dryomov 10167a28f59bSIlya Dryomov osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); 10170247a0cfSIlya Dryomov osd_init(osd); 10183d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1019e10006f8SAlex Elder osd->o_osd = onum; 10203d14c5d2SYehuda Sadeh 1021b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10223d14c5d2SYehuda Sadeh 10233d14c5d2SYehuda Sadeh return osd; 10243d14c5d2SYehuda Sadeh } 10253d14c5d2SYehuda Sadeh 10263d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 10273d14c5d2SYehuda Sadeh { 10283d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 10293d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 10303d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 10313d14c5d2SYehuda Sadeh return osd; 10323d14c5d2SYehuda Sadeh } else { 10333d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10343d14c5d2SYehuda Sadeh return NULL; 10353d14c5d2SYehuda Sadeh } 10363d14c5d2SYehuda Sadeh } 10373d14c5d2SYehuda Sadeh 10383d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 10393d14c5d2SYehuda Sadeh { 10403d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 10413d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 1042b28ec2f3SIlya Dryomov if (atomic_dec_and_test(&osd->o_ref)) { 10430247a0cfSIlya Dryomov osd_cleanup(osd); 10443d14c5d2SYehuda Sadeh kfree(osd); 10453d14c5d2SYehuda Sadeh } 10463d14c5d2SYehuda Sadeh } 10473d14c5d2SYehuda Sadeh 1048fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1049fcd00b68SIlya Dryomov 10509dd2845cSIlya Dryomov static void __move_osd_to_lru(struct ceph_osd *osd) 10513d14c5d2SYehuda Sadeh { 10529dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 10539dd2845cSIlya Dryomov 10549dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 10553d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1056bbf37ec3SIlya Dryomov 10579dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 10583d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 10599dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 10609dd2845cSIlya Dryomov 1061a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 10623d14c5d2SYehuda Sadeh } 10633d14c5d2SYehuda Sadeh 10649dd2845cSIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd *osd) 1065bbf37ec3SIlya Dryomov { 10665aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1067922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) 10689dd2845cSIlya Dryomov __move_osd_to_lru(osd); 1069bbf37ec3SIlya Dryomov } 1070bbf37ec3SIlya Dryomov 10713d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 10723d14c5d2SYehuda Sadeh { 10739dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 10749dd2845cSIlya Dryomov 10759dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 10769dd2845cSIlya Dryomov 10779dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 10783d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 10793d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 10809dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 10813d14c5d2SYehuda Sadeh } 10823d14c5d2SYehuda Sadeh 10833d14c5d2SYehuda Sadeh /* 10845aea3dcdSIlya Dryomov * Close the connection and assign any leftover requests to the 10855aea3dcdSIlya Dryomov * homeless session. 10865aea3dcdSIlya Dryomov */ 10875aea3dcdSIlya Dryomov static void close_osd(struct ceph_osd *osd) 10885aea3dcdSIlya Dryomov { 10895aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 10905aea3dcdSIlya Dryomov struct rb_node *n; 10915aea3dcdSIlya Dryomov 10925aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 10935aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 10945aea3dcdSIlya Dryomov 10955aea3dcdSIlya Dryomov ceph_con_close(&osd->o_con); 10965aea3dcdSIlya Dryomov 10975aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 10985aea3dcdSIlya Dryomov struct ceph_osd_request *req = 10995aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 11005aea3dcdSIlya Dryomov 11015aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 11025aea3dcdSIlya Dryomov 11035aea3dcdSIlya Dryomov dout(" reassigning req %p tid %llu\n", req, req->r_tid); 11045aea3dcdSIlya Dryomov unlink_request(osd, req); 11055aea3dcdSIlya Dryomov link_request(&osdc->homeless_osd, req); 11065aea3dcdSIlya Dryomov } 1107922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 1108922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1109922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 1110922dab61SIlya Dryomov 1111922dab61SIlya Dryomov n = rb_next(n); /* unlink_linger() */ 1112922dab61SIlya Dryomov 1113922dab61SIlya Dryomov dout(" reassigning lreq %p linger_id %llu\n", lreq, 1114922dab61SIlya Dryomov lreq->linger_id); 1115922dab61SIlya Dryomov unlink_linger(osd, lreq); 1116922dab61SIlya Dryomov link_linger(&osdc->homeless_osd, lreq); 1117922dab61SIlya Dryomov } 11185aea3dcdSIlya Dryomov 11195aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 11205aea3dcdSIlya Dryomov erase_osd(&osdc->osds, osd); 11215aea3dcdSIlya Dryomov put_osd(osd); 11225aea3dcdSIlya Dryomov } 11235aea3dcdSIlya Dryomov 11245aea3dcdSIlya Dryomov /* 11253d14c5d2SYehuda Sadeh * reset osd connect 11263d14c5d2SYehuda Sadeh */ 11275aea3dcdSIlya Dryomov static int reopen_osd(struct ceph_osd *osd) 11283d14c5d2SYehuda Sadeh { 1129c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 11303d14c5d2SYehuda Sadeh 11315aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11325aea3dcdSIlya Dryomov 11335aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1134922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) { 11355aea3dcdSIlya Dryomov close_osd(osd); 1136c3acb181SAlex Elder return -ENODEV; 1137c3acb181SAlex Elder } 1138c3acb181SAlex Elder 11395aea3dcdSIlya Dryomov peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; 1140c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 11413d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 11425aea3dcdSIlya Dryomov struct rb_node *n; 1143c3acb181SAlex Elder 11443d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 11450b4af2e8SIlya Dryomov "letting msgr retry\n"); 11463d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 11475aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 11485aea3dcdSIlya Dryomov struct ceph_osd_request *req = 11495aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 11503d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 11515aea3dcdSIlya Dryomov } 1152c3acb181SAlex Elder 1153c3acb181SAlex Elder return -EAGAIN; 11543d14c5d2SYehuda Sadeh } 1155c3acb181SAlex Elder 1156c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1157c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1158c3acb181SAlex Elder osd->o_incarnation++; 1159c3acb181SAlex Elder 1160c3acb181SAlex Elder return 0; 11613d14c5d2SYehuda Sadeh } 11623d14c5d2SYehuda Sadeh 11635aea3dcdSIlya Dryomov static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, 11645aea3dcdSIlya Dryomov bool wrlocked) 11653d14c5d2SYehuda Sadeh { 11665aea3dcdSIlya Dryomov struct ceph_osd *osd; 11675aea3dcdSIlya Dryomov 11685aea3dcdSIlya Dryomov if (wrlocked) 11695aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 11705aea3dcdSIlya Dryomov else 11715aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 11725aea3dcdSIlya Dryomov 11735aea3dcdSIlya Dryomov if (o != CEPH_HOMELESS_OSD) 11745aea3dcdSIlya Dryomov osd = lookup_osd(&osdc->osds, o); 11755aea3dcdSIlya Dryomov else 11765aea3dcdSIlya Dryomov osd = &osdc->homeless_osd; 11775aea3dcdSIlya Dryomov if (!osd) { 11785aea3dcdSIlya Dryomov if (!wrlocked) 11795aea3dcdSIlya Dryomov return ERR_PTR(-EAGAIN); 11805aea3dcdSIlya Dryomov 11815aea3dcdSIlya Dryomov osd = create_osd(osdc, o); 11825aea3dcdSIlya Dryomov insert_osd(&osdc->osds, osd); 11835aea3dcdSIlya Dryomov ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, 11845aea3dcdSIlya Dryomov &osdc->osdmap->osd_addr[osd->o_osd]); 11855aea3dcdSIlya Dryomov } 11865aea3dcdSIlya Dryomov 11875aea3dcdSIlya Dryomov dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); 11885aea3dcdSIlya Dryomov return osd; 1189a40c4f10SYehuda Sadeh } 1190a40c4f10SYehuda Sadeh 11913d14c5d2SYehuda Sadeh /* 11925aea3dcdSIlya Dryomov * Create request <-> OSD session relation. 11935aea3dcdSIlya Dryomov * 11945aea3dcdSIlya Dryomov * @req has to be assigned a tid, @osd may be homeless. 11953d14c5d2SYehuda Sadeh */ 11965aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) 11973d14c5d2SYehuda Sadeh { 11985aea3dcdSIlya Dryomov verify_osd_locked(osd); 11995aea3dcdSIlya Dryomov WARN_ON(!req->r_tid || req->r_osd); 12005aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 120135f9f8a0SSage Weil req, req->r_tid); 12025aea3dcdSIlya Dryomov 12035aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 12045aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 12055aea3dcdSIlya Dryomov else 12065aea3dcdSIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 12075aea3dcdSIlya Dryomov 12085aea3dcdSIlya Dryomov get_osd(osd); 12095aea3dcdSIlya Dryomov insert_request(&osd->o_requests, req); 12105aea3dcdSIlya Dryomov req->r_osd = osd; 121135f9f8a0SSage Weil } 121235f9f8a0SSage Weil 12135aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) 12143d14c5d2SYehuda Sadeh { 12155aea3dcdSIlya Dryomov verify_osd_locked(osd); 12165aea3dcdSIlya Dryomov WARN_ON(req->r_osd != osd); 12175aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 12185aea3dcdSIlya Dryomov req, req->r_tid); 12195aea3dcdSIlya Dryomov 12205aea3dcdSIlya Dryomov req->r_osd = NULL; 12215aea3dcdSIlya Dryomov erase_request(&osd->o_requests, req); 12225aea3dcdSIlya Dryomov put_osd(osd); 12235aea3dcdSIlya Dryomov 12245aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 12255aea3dcdSIlya Dryomov maybe_move_osd_to_lru(osd); 12265aea3dcdSIlya Dryomov else 12275aea3dcdSIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 12283d14c5d2SYehuda Sadeh } 12293d14c5d2SYehuda Sadeh 123063244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 123163244fa1SIlya Dryomov { 123263244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 123363244fa1SIlya Dryomov } 123463244fa1SIlya Dryomov 123542c1b124SIlya Dryomov static bool have_pool_full(struct ceph_osd_client *osdc) 123642c1b124SIlya Dryomov { 123742c1b124SIlya Dryomov struct rb_node *n; 123842c1b124SIlya Dryomov 123942c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 124042c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 124142c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 124242c1b124SIlya Dryomov 124342c1b124SIlya Dryomov if (__pool_full(pi)) 124442c1b124SIlya Dryomov return true; 124542c1b124SIlya Dryomov } 124642c1b124SIlya Dryomov 124742c1b124SIlya Dryomov return false; 124842c1b124SIlya Dryomov } 124942c1b124SIlya Dryomov 12505aea3dcdSIlya Dryomov static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) 12515aea3dcdSIlya Dryomov { 12525aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 12535aea3dcdSIlya Dryomov 12545aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 12555aea3dcdSIlya Dryomov if (!pi) 12565aea3dcdSIlya Dryomov return false; 12575aea3dcdSIlya Dryomov 12585aea3dcdSIlya Dryomov return __pool_full(pi); 12595aea3dcdSIlya Dryomov } 12605aea3dcdSIlya Dryomov 12613d14c5d2SYehuda Sadeh /* 1262d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1263d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1264d29adb34SJosh Durgin */ 126563244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 126663244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 126763244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 126863244fa1SIlya Dryomov { 126963244fa1SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 127063244fa1SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 127163244fa1SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 127263244fa1SIlya Dryomov __pool_full(pi); 127363244fa1SIlya Dryomov 127463244fa1SIlya Dryomov WARN_ON(pi->id != t->base_oloc.pool); 127563244fa1SIlya Dryomov return (t->flags & CEPH_OSD_FLAG_READ && pauserd) || 127663244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_WRITE && pausewr); 127763244fa1SIlya Dryomov } 127863244fa1SIlya Dryomov 127963244fa1SIlya Dryomov enum calc_target_result { 128063244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 128163244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 128263244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 128363244fa1SIlya Dryomov }; 128463244fa1SIlya Dryomov 128563244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 128663244fa1SIlya Dryomov struct ceph_osd_request_target *t, 128763244fa1SIlya Dryomov u32 *last_force_resend, 128863244fa1SIlya Dryomov bool any_change) 128963244fa1SIlya Dryomov { 129063244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 129163244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 129263244fa1SIlya Dryomov struct ceph_osds up, acting; 129363244fa1SIlya Dryomov bool force_resend = false; 129463244fa1SIlya Dryomov bool need_check_tiering = false; 129563244fa1SIlya Dryomov bool need_resend = false; 129663244fa1SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc->osdmap, 129763244fa1SIlya Dryomov CEPH_OSDMAP_SORTBITWISE); 129863244fa1SIlya Dryomov enum calc_target_result ct_res; 129963244fa1SIlya Dryomov int ret; 130063244fa1SIlya Dryomov 130163244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 130263244fa1SIlya Dryomov if (!pi) { 130363244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 130463244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 130563244fa1SIlya Dryomov goto out; 130663244fa1SIlya Dryomov } 130763244fa1SIlya Dryomov 130863244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 130963244fa1SIlya Dryomov if (last_force_resend && 131063244fa1SIlya Dryomov *last_force_resend < pi->last_force_request_resend) { 131163244fa1SIlya Dryomov *last_force_resend = pi->last_force_request_resend; 131263244fa1SIlya Dryomov force_resend = true; 131363244fa1SIlya Dryomov } else if (!last_force_resend) { 131463244fa1SIlya Dryomov force_resend = true; 131563244fa1SIlya Dryomov } 131663244fa1SIlya Dryomov } 131763244fa1SIlya Dryomov if (ceph_oid_empty(&t->target_oid) || force_resend) { 131863244fa1SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 131963244fa1SIlya Dryomov need_check_tiering = true; 132063244fa1SIlya Dryomov } 132163244fa1SIlya Dryomov if (ceph_oloc_empty(&t->target_oloc) || force_resend) { 132263244fa1SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 132363244fa1SIlya Dryomov need_check_tiering = true; 132463244fa1SIlya Dryomov } 132563244fa1SIlya Dryomov 132663244fa1SIlya Dryomov if (need_check_tiering && 132763244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 132863244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) 132963244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 133063244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) 133163244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 133263244fa1SIlya Dryomov } 133363244fa1SIlya Dryomov 133463244fa1SIlya Dryomov ret = ceph_object_locator_to_pg(osdc->osdmap, &t->target_oid, 133563244fa1SIlya Dryomov &t->target_oloc, &pgid); 133663244fa1SIlya Dryomov if (ret) { 133763244fa1SIlya Dryomov WARN_ON(ret != -ENOENT); 133863244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 133963244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 134063244fa1SIlya Dryomov goto out; 134163244fa1SIlya Dryomov } 134263244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 134363244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 134463244fa1SIlya Dryomov 134563244fa1SIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting); 134663244fa1SIlya Dryomov if (any_change && 134763244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 134863244fa1SIlya Dryomov &acting, 134963244fa1SIlya Dryomov &t->up, 135063244fa1SIlya Dryomov &up, 135163244fa1SIlya Dryomov t->size, 135263244fa1SIlya Dryomov pi->size, 135363244fa1SIlya Dryomov t->min_size, 135463244fa1SIlya Dryomov pi->min_size, 135563244fa1SIlya Dryomov t->pg_num, 135663244fa1SIlya Dryomov pi->pg_num, 135763244fa1SIlya Dryomov t->sort_bitwise, 135863244fa1SIlya Dryomov sort_bitwise, 135963244fa1SIlya Dryomov &last_pgid)) 136063244fa1SIlya Dryomov force_resend = true; 136163244fa1SIlya Dryomov 136263244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 136363244fa1SIlya Dryomov t->paused = false; 136463244fa1SIlya Dryomov need_resend = true; 136563244fa1SIlya Dryomov } 136663244fa1SIlya Dryomov 136763244fa1SIlya Dryomov if (ceph_pg_compare(&t->pgid, &pgid) || 136863244fa1SIlya Dryomov ceph_osds_changed(&t->acting, &acting, any_change) || 136963244fa1SIlya Dryomov force_resend) { 137063244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 137163244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 137263244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 137363244fa1SIlya Dryomov t->size = pi->size; 137463244fa1SIlya Dryomov t->min_size = pi->min_size; 137563244fa1SIlya Dryomov t->pg_num = pi->pg_num; 137663244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 137763244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 137863244fa1SIlya Dryomov 137963244fa1SIlya Dryomov t->osd = acting.primary; 138063244fa1SIlya Dryomov need_resend = true; 138163244fa1SIlya Dryomov } 138263244fa1SIlya Dryomov 138363244fa1SIlya Dryomov ct_res = need_resend ? CALC_TARGET_NEED_RESEND : CALC_TARGET_NO_ACTION; 138463244fa1SIlya Dryomov out: 138563244fa1SIlya Dryomov dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); 138663244fa1SIlya Dryomov return ct_res; 138763244fa1SIlya Dryomov } 138863244fa1SIlya Dryomov 1389bb873b53SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req, 1390bb873b53SIlya Dryomov struct ceph_msg *msg) 13913d14c5d2SYehuda Sadeh { 1392bb873b53SIlya Dryomov u32 data_len = 0; 1393bb873b53SIlya Dryomov int i; 13943d14c5d2SYehuda Sadeh 1395bb873b53SIlya Dryomov if (!list_empty(&msg->data)) 1396bb873b53SIlya Dryomov return; 13973d14c5d2SYehuda Sadeh 1398bb873b53SIlya Dryomov WARN_ON(msg->data_length); 1399bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1400bb873b53SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[i]; 1401bb873b53SIlya Dryomov 1402bb873b53SIlya Dryomov switch (op->op) { 1403bb873b53SIlya Dryomov /* request */ 1404bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 1405bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 1406bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 1407bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->extent.osd_data); 1408bb873b53SIlya Dryomov break; 1409bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 1410bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 1411bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 1412bb873b53SIlya Dryomov op->xattr.value_len); 1413bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->xattr.osd_data); 1414bb873b53SIlya Dryomov break; 1415922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 1416922dab61SIlya Dryomov ceph_osdc_msg_data_add(msg, 1417922dab61SIlya Dryomov &op->notify_ack.request_data); 1418922dab61SIlya Dryomov break; 1419bb873b53SIlya Dryomov 1420bb873b53SIlya Dryomov /* reply */ 1421bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 1422bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1423bb873b53SIlya Dryomov &op->raw_data_in); 1424bb873b53SIlya Dryomov break; 1425bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 1426bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1427bb873b53SIlya Dryomov &op->extent.osd_data); 1428bb873b53SIlya Dryomov break; 1429bb873b53SIlya Dryomov 1430bb873b53SIlya Dryomov /* both */ 1431bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 1432bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 1433bb873b53SIlya Dryomov op->cls.method_len + 1434bb873b53SIlya Dryomov op->cls.indata_len); 1435bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_info); 1436bb873b53SIlya Dryomov /* optional, can be NONE */ 1437bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_data); 1438bb873b53SIlya Dryomov /* optional, can be NONE */ 1439bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1440bb873b53SIlya Dryomov &op->cls.response_data); 1441bb873b53SIlya Dryomov break; 1442bb873b53SIlya Dryomov } 1443bb873b53SIlya Dryomov 1444bb873b53SIlya Dryomov data_len += op->indata_len; 1445bb873b53SIlya Dryomov } 1446bb873b53SIlya Dryomov 1447bb873b53SIlya Dryomov WARN_ON(data_len != msg->data_length); 1448bb873b53SIlya Dryomov } 1449bb873b53SIlya Dryomov 1450bb873b53SIlya Dryomov static void encode_request(struct ceph_osd_request *req, struct ceph_msg *msg) 1451bb873b53SIlya Dryomov { 1452bb873b53SIlya Dryomov void *p = msg->front.iov_base; 1453bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 1454bb873b53SIlya Dryomov u32 data_len = 0; 1455bb873b53SIlya Dryomov int i; 1456bb873b53SIlya Dryomov 1457bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 1458bb873b53SIlya Dryomov /* snapshots aren't writeable */ 1459bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 1460bb873b53SIlya Dryomov } else { 1461bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 1462bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 1463bb873b53SIlya Dryomov } 1464bb873b53SIlya Dryomov 1465bb873b53SIlya Dryomov setup_request_data(req, msg); 1466bb873b53SIlya Dryomov 1467bb873b53SIlya Dryomov ceph_encode_32(&p, 1); /* client_inc, always 1 */ 1468bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 1469bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 1470bb873b53SIlya Dryomov ceph_encode_timespec(p, &req->r_mtime); 1471bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 1472bb873b53SIlya Dryomov /* aka reassert_version */ 1473bb873b53SIlya Dryomov memcpy(p, &req->r_replay_version, sizeof(req->r_replay_version)); 1474bb873b53SIlya Dryomov p += sizeof(req->r_replay_version); 1475bb873b53SIlya Dryomov 1476bb873b53SIlya Dryomov /* oloc */ 1477bb873b53SIlya Dryomov ceph_encode_8(&p, 4); 1478bb873b53SIlya Dryomov ceph_encode_8(&p, 4); 1479bb873b53SIlya Dryomov ceph_encode_32(&p, 8 + 4 + 4); 1480bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_t.target_oloc.pool); 1481bb873b53SIlya Dryomov ceph_encode_32(&p, -1); /* preferred */ 1482bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* key len */ 1483bb873b53SIlya Dryomov 1484bb873b53SIlya Dryomov /* pgid */ 1485bb873b53SIlya Dryomov ceph_encode_8(&p, 1); 1486a66dd383SIlya Dryomov ceph_encode_64(&p, req->r_t.pgid.pool); 1487a66dd383SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); 1488bb873b53SIlya Dryomov ceph_encode_32(&p, -1); /* preferred */ 14892169aea6SSage Weil 1490bb873b53SIlya Dryomov /* oid */ 1491bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_t.target_oid.name_len); 1492bb873b53SIlya Dryomov memcpy(p, req->r_t.target_oid.name, req->r_t.target_oid.name_len); 1493bb873b53SIlya Dryomov p += req->r_t.target_oid.name_len; 1494bb873b53SIlya Dryomov 1495bb873b53SIlya Dryomov /* ops, can imply data */ 1496bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 1497bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1498bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 1499bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 1500bb873b53SIlya Dryomov } 1501bb873b53SIlya Dryomov 1502bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 1503bb873b53SIlya Dryomov if (req->r_snapc) { 1504bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 1505bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 1506bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 1507bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 1508bb873b53SIlya Dryomov } else { 1509bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 1510bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 1511bb873b53SIlya Dryomov } 1512bb873b53SIlya Dryomov 1513bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 1514bb873b53SIlya Dryomov 1515bb873b53SIlya Dryomov BUG_ON(p > end); 1516bb873b53SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 1517bb873b53SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 1518bb873b53SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 1519bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 1520bb873b53SIlya Dryomov /* 1521bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 1522bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 1523bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 1524bb873b53SIlya Dryomov */ 1525bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 1526bb873b53SIlya Dryomov 1527bb873b53SIlya Dryomov dout("%s req %p oid %*pE oid_len %d front %zu data %u\n", __func__, 1528bb873b53SIlya Dryomov req, req->r_t.target_oid.name_len, req->r_t.target_oid.name, 1529bb873b53SIlya Dryomov req->r_t.target_oid.name_len, msg->front.iov_len, data_len); 1530bb873b53SIlya Dryomov } 1531bb873b53SIlya Dryomov 1532bb873b53SIlya Dryomov /* 1533bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 1534bb873b53SIlya Dryomov */ 1535bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 1536bb873b53SIlya Dryomov { 1537bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 1538bb873b53SIlya Dryomov 15395aea3dcdSIlya Dryomov verify_osd_locked(osd); 1540bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 1541bb873b53SIlya Dryomov 15425aea3dcdSIlya Dryomov /* 15435aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 15445aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 15455aea3dcdSIlya Dryomov */ 15465aea3dcdSIlya Dryomov if (req->r_sent) 15475aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 15485aea3dcdSIlya Dryomov 1549bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 1550bb873b53SIlya Dryomov if (req->r_attempts) 1551bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 1552bb873b53SIlya Dryomov else 1553bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 1554bb873b53SIlya Dryomov 1555bb873b53SIlya Dryomov encode_request(req, req->r_request); 1556bb873b53SIlya Dryomov 1557bb873b53SIlya Dryomov dout("%s req %p tid %llu to pg %llu.%x osd%d flags 0x%x attempt %d\n", 1558bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 1559bb873b53SIlya Dryomov req->r_t.osd, req->r_flags, req->r_attempts); 1560bb873b53SIlya Dryomov 1561bb873b53SIlya Dryomov req->r_t.paused = false; 15623d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1563bb873b53SIlya Dryomov req->r_attempts++; 15643d14c5d2SYehuda Sadeh 1565bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 1566bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 1567bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 15683d14c5d2SYehuda Sadeh } 15693d14c5d2SYehuda Sadeh 157042c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 157142c1b124SIlya Dryomov { 157242c1b124SIlya Dryomov bool continuous = false; 157342c1b124SIlya Dryomov 15745aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 157542c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 157642c1b124SIlya Dryomov 157742c1b124SIlya Dryomov if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 157842c1b124SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || 157942c1b124SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) { 158042c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 158142c1b124SIlya Dryomov continuous = true; 158242c1b124SIlya Dryomov } else { 158342c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 158442c1b124SIlya Dryomov } 158542c1b124SIlya Dryomov 158642c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 158742c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 158842c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 158942c1b124SIlya Dryomov } 159042c1b124SIlya Dryomov 15915aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 15920bbfdfe8SIlya Dryomov { 15935aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 15945aea3dcdSIlya Dryomov struct ceph_osd *osd; 15955aea3dcdSIlya Dryomov bool need_send = false; 15965aea3dcdSIlya Dryomov bool promoted = false; 15970bbfdfe8SIlya Dryomov 15985aea3dcdSIlya Dryomov WARN_ON(req->r_tid || req->r_got_reply); 15995aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 16005aea3dcdSIlya Dryomov 16015aea3dcdSIlya Dryomov again: 16025aea3dcdSIlya Dryomov calc_target(osdc, &req->r_t, &req->r_last_force_resend, false); 16035aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 16045aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 16055aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 16065aea3dcdSIlya Dryomov goto promote; 16075aea3dcdSIlya Dryomov } 16085aea3dcdSIlya Dryomov 16095aea3dcdSIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 16105aea3dcdSIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) { 16115aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 16125aea3dcdSIlya Dryomov req->r_t.paused = true; 16135aea3dcdSIlya Dryomov maybe_request_map(osdc); 16145aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 16155aea3dcdSIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD)) { 16165aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 16175aea3dcdSIlya Dryomov req->r_t.paused = true; 16185aea3dcdSIlya Dryomov maybe_request_map(osdc); 16195aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 16205aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 16215aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 16225aea3dcdSIlya Dryomov (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 16235aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 16245aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 16255aea3dcdSIlya Dryomov pr_warn_ratelimited("FULL or reached pool quota\n"); 16265aea3dcdSIlya Dryomov req->r_t.paused = true; 16275aea3dcdSIlya Dryomov maybe_request_map(osdc); 16285aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 16295aea3dcdSIlya Dryomov need_send = true; 16300bbfdfe8SIlya Dryomov } else { 16315aea3dcdSIlya Dryomov maybe_request_map(osdc); 16320bbfdfe8SIlya Dryomov } 16330bbfdfe8SIlya Dryomov 16345aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 16355aea3dcdSIlya Dryomov /* 16365aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 16375aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 16385aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 16395aea3dcdSIlya Dryomov */ 16405aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 16415aea3dcdSIlya Dryomov link_request(osd, req); 16425aea3dcdSIlya Dryomov if (need_send) 16435aea3dcdSIlya Dryomov send_request(req); 16445aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 16455aea3dcdSIlya Dryomov 16465aea3dcdSIlya Dryomov if (promoted) 16475aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 16485aea3dcdSIlya Dryomov return; 16495aea3dcdSIlya Dryomov 16505aea3dcdSIlya Dryomov promote: 16515aea3dcdSIlya Dryomov up_read(&osdc->lock); 16525aea3dcdSIlya Dryomov down_write(&osdc->lock); 16535aea3dcdSIlya Dryomov wrlocked = true; 16545aea3dcdSIlya Dryomov promoted = true; 16555aea3dcdSIlya Dryomov goto again; 16560bbfdfe8SIlya Dryomov } 16570bbfdfe8SIlya Dryomov 16585aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 16595aea3dcdSIlya Dryomov { 16605aea3dcdSIlya Dryomov unsigned int mask = CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK; 16615aea3dcdSIlya Dryomov 16625aea3dcdSIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_READ) { 16635aea3dcdSIlya Dryomov WARN_ON(req->r_flags & mask); 16645aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ACK; 16655aea3dcdSIlya Dryomov } else if (req->r_flags & CEPH_OSD_FLAG_WRITE) 16665aea3dcdSIlya Dryomov WARN_ON(!(req->r_flags & mask)); 16675aea3dcdSIlya Dryomov else 16685aea3dcdSIlya Dryomov WARN_ON(1); 16695aea3dcdSIlya Dryomov 16705aea3dcdSIlya Dryomov WARN_ON(req->r_unsafe_callback && (req->r_flags & mask) != mask); 16715aea3dcdSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 16725aea3dcdSIlya Dryomov } 16735aea3dcdSIlya Dryomov 16745aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 16755aea3dcdSIlya Dryomov { 16765aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 16775aea3dcdSIlya Dryomov account_request(req); 16785aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 16795aea3dcdSIlya Dryomov } 16805aea3dcdSIlya Dryomov 16815aea3dcdSIlya Dryomov static void __finish_request(struct ceph_osd_request *req) 16825aea3dcdSIlya Dryomov { 16835aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 16845aea3dcdSIlya Dryomov struct ceph_osd *osd = req->r_osd; 16855aea3dcdSIlya Dryomov 16865aea3dcdSIlya Dryomov verify_osd_locked(osd); 16875aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 16885aea3dcdSIlya Dryomov 16895aea3dcdSIlya Dryomov unlink_request(osd, req); 16905aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 16915aea3dcdSIlya Dryomov 16925aea3dcdSIlya Dryomov /* 16935aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 16945aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 16955aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 16965aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 16975aea3dcdSIlya Dryomov */ 16985aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 16995aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 17005aea3dcdSIlya Dryomov } 17015aea3dcdSIlya Dryomov 17025aea3dcdSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 17035aea3dcdSIlya Dryomov { 17045aea3dcdSIlya Dryomov __finish_request(req); 17055aea3dcdSIlya Dryomov ceph_osdc_put_request(req); 17060bbfdfe8SIlya Dryomov } 17070bbfdfe8SIlya Dryomov 1708fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 1709fe5da05eSIlya Dryomov { 1710fe5da05eSIlya Dryomov if (req->r_callback) 1711fe5da05eSIlya Dryomov req->r_callback(req); 1712fe5da05eSIlya Dryomov else 1713fe5da05eSIlya Dryomov complete_all(&req->r_completion); 1714fe5da05eSIlya Dryomov } 1715fe5da05eSIlya Dryomov 17165aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 17175aea3dcdSIlya Dryomov { 17185aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 17195aea3dcdSIlya Dryomov 17205aea3dcdSIlya Dryomov finish_request(req); 17215aea3dcdSIlya Dryomov } 17225aea3dcdSIlya Dryomov 17230bbfdfe8SIlya Dryomov /* 1724922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 1725922dab61SIlya Dryomov */ 1726922dab61SIlya Dryomov static void linger_release(struct kref *kref) 1727922dab61SIlya Dryomov { 1728922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1729922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 1730922dab61SIlya Dryomov 1731922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 1732922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 1733922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 1734922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 1735922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 1736922dab61SIlya Dryomov WARN_ON(lreq->osd); 1737922dab61SIlya Dryomov 1738922dab61SIlya Dryomov if (lreq->reg_req) 1739922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 1740922dab61SIlya Dryomov if (lreq->ping_req) 1741922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 1742922dab61SIlya Dryomov target_destroy(&lreq->t); 1743922dab61SIlya Dryomov kfree(lreq); 1744922dab61SIlya Dryomov } 1745922dab61SIlya Dryomov 1746922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 1747922dab61SIlya Dryomov { 1748922dab61SIlya Dryomov if (lreq) 1749922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 1750922dab61SIlya Dryomov } 1751922dab61SIlya Dryomov 1752922dab61SIlya Dryomov static struct ceph_osd_linger_request * 1753922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 1754922dab61SIlya Dryomov { 1755922dab61SIlya Dryomov kref_get(&lreq->kref); 1756922dab61SIlya Dryomov return lreq; 1757922dab61SIlya Dryomov } 1758922dab61SIlya Dryomov 1759922dab61SIlya Dryomov static struct ceph_osd_linger_request * 1760922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 1761922dab61SIlya Dryomov { 1762922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 1763922dab61SIlya Dryomov 1764922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 1765922dab61SIlya Dryomov if (!lreq) 1766922dab61SIlya Dryomov return NULL; 1767922dab61SIlya Dryomov 1768922dab61SIlya Dryomov kref_init(&lreq->kref); 1769922dab61SIlya Dryomov mutex_init(&lreq->lock); 1770922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 1771922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 1772922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 1773922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 1774922dab61SIlya Dryomov 1775922dab61SIlya Dryomov lreq->osdc = osdc; 1776922dab61SIlya Dryomov target_init(&lreq->t); 1777922dab61SIlya Dryomov 1778922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 1779922dab61SIlya Dryomov return lreq; 1780922dab61SIlya Dryomov } 1781922dab61SIlya Dryomov 1782922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 1783922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 1784922dab61SIlya Dryomov 1785922dab61SIlya Dryomov /* 1786922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 1787922dab61SIlya Dryomov * 1788922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 1789922dab61SIlya Dryomov */ 1790922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 1791922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 1792922dab61SIlya Dryomov { 1793922dab61SIlya Dryomov verify_osd_locked(osd); 1794922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 1795922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 1796922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 1797922dab61SIlya Dryomov 1798922dab61SIlya Dryomov if (!osd_homeless(osd)) 1799922dab61SIlya Dryomov __remove_osd_from_lru(osd); 1800922dab61SIlya Dryomov else 1801922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 1802922dab61SIlya Dryomov 1803922dab61SIlya Dryomov get_osd(osd); 1804922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 1805922dab61SIlya Dryomov lreq->osd = osd; 1806922dab61SIlya Dryomov } 1807922dab61SIlya Dryomov 1808922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 1809922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 1810922dab61SIlya Dryomov { 1811922dab61SIlya Dryomov verify_osd_locked(osd); 1812922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 1813922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 1814922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 1815922dab61SIlya Dryomov 1816922dab61SIlya Dryomov lreq->osd = NULL; 1817922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 1818922dab61SIlya Dryomov put_osd(osd); 1819922dab61SIlya Dryomov 1820922dab61SIlya Dryomov if (!osd_homeless(osd)) 1821922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 1822922dab61SIlya Dryomov else 1823922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 1824922dab61SIlya Dryomov } 1825922dab61SIlya Dryomov 1826922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 1827922dab61SIlya Dryomov { 1828922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 1829922dab61SIlya Dryomov 1830922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 1831922dab61SIlya Dryomov } 1832922dab61SIlya Dryomov 1833922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 1834922dab61SIlya Dryomov { 1835922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 1836922dab61SIlya Dryomov bool registered; 1837922dab61SIlya Dryomov 1838922dab61SIlya Dryomov down_read(&osdc->lock); 1839922dab61SIlya Dryomov registered = __linger_registered(lreq); 1840922dab61SIlya Dryomov up_read(&osdc->lock); 1841922dab61SIlya Dryomov 1842922dab61SIlya Dryomov return registered; 1843922dab61SIlya Dryomov } 1844922dab61SIlya Dryomov 1845922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 1846922dab61SIlya Dryomov { 1847922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 1848922dab61SIlya Dryomov 1849922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 1850922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 1851922dab61SIlya Dryomov 1852922dab61SIlya Dryomov linger_get(lreq); 1853922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 1854922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 1855922dab61SIlya Dryomov } 1856922dab61SIlya Dryomov 1857922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 1858922dab61SIlya Dryomov { 1859922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 1860922dab61SIlya Dryomov 1861922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 1862922dab61SIlya Dryomov 1863922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 1864922dab61SIlya Dryomov linger_put(lreq); 1865922dab61SIlya Dryomov } 1866922dab61SIlya Dryomov 1867922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 1868922dab61SIlya Dryomov { 1869922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 1870922dab61SIlya Dryomov 1871922dab61SIlya Dryomov WARN_ON(!req->r_linger); 1872922dab61SIlya Dryomov cancel_request(req); 1873922dab61SIlya Dryomov linger_put(lreq); 1874922dab61SIlya Dryomov } 1875922dab61SIlya Dryomov 1876922dab61SIlya Dryomov struct linger_work { 1877922dab61SIlya Dryomov struct work_struct work; 1878922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 1879922dab61SIlya Dryomov 1880922dab61SIlya Dryomov union { 1881922dab61SIlya Dryomov struct { 1882922dab61SIlya Dryomov u64 notify_id; 1883922dab61SIlya Dryomov u64 notifier_id; 1884922dab61SIlya Dryomov void *payload; /* points into @msg front */ 1885922dab61SIlya Dryomov size_t payload_len; 1886922dab61SIlya Dryomov 1887922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 1888922dab61SIlya Dryomov } notify; 1889922dab61SIlya Dryomov struct { 1890922dab61SIlya Dryomov int err; 1891922dab61SIlya Dryomov } error; 1892922dab61SIlya Dryomov }; 1893922dab61SIlya Dryomov }; 1894922dab61SIlya Dryomov 1895922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 1896922dab61SIlya Dryomov work_func_t workfn) 1897922dab61SIlya Dryomov { 1898922dab61SIlya Dryomov struct linger_work *lwork; 1899922dab61SIlya Dryomov 1900922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 1901922dab61SIlya Dryomov if (!lwork) 1902922dab61SIlya Dryomov return NULL; 1903922dab61SIlya Dryomov 1904922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 1905922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 1906922dab61SIlya Dryomov 1907922dab61SIlya Dryomov return lwork; 1908922dab61SIlya Dryomov } 1909922dab61SIlya Dryomov 1910922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 1911922dab61SIlya Dryomov { 1912922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 1913922dab61SIlya Dryomov 1914922dab61SIlya Dryomov linger_put(lreq); 1915922dab61SIlya Dryomov kfree(lwork); 1916922dab61SIlya Dryomov } 1917922dab61SIlya Dryomov 1918922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 1919922dab61SIlya Dryomov { 1920922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 1921922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 1922922dab61SIlya Dryomov 1923922dab61SIlya Dryomov verify_lreq_locked(lreq); 1924922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 1925922dab61SIlya Dryomov } 1926922dab61SIlya Dryomov 1927922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 1928922dab61SIlya Dryomov { 1929922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 1930922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 1931922dab61SIlya Dryomov 1932922dab61SIlya Dryomov if (!linger_registered(lreq)) { 1933922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 1934922dab61SIlya Dryomov goto out; 1935922dab61SIlya Dryomov } 1936922dab61SIlya Dryomov 1937922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 1938922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 1939922dab61SIlya Dryomov lwork->notify.payload_len); 1940922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 1941922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 1942922dab61SIlya Dryomov lwork->notify.payload_len); 1943922dab61SIlya Dryomov 1944922dab61SIlya Dryomov out: 1945922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 1946922dab61SIlya Dryomov lwork_free(lwork); 1947922dab61SIlya Dryomov } 1948922dab61SIlya Dryomov 1949922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 1950922dab61SIlya Dryomov { 1951922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 1952922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 1953922dab61SIlya Dryomov 1954922dab61SIlya Dryomov if (!linger_registered(lreq)) { 1955922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 1956922dab61SIlya Dryomov goto out; 1957922dab61SIlya Dryomov } 1958922dab61SIlya Dryomov 1959922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 1960922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 1961922dab61SIlya Dryomov 1962922dab61SIlya Dryomov out: 1963922dab61SIlya Dryomov lwork_free(lwork); 1964922dab61SIlya Dryomov } 1965922dab61SIlya Dryomov 1966922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 1967922dab61SIlya Dryomov { 1968922dab61SIlya Dryomov struct linger_work *lwork; 1969922dab61SIlya Dryomov 1970922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 1971922dab61SIlya Dryomov if (!lwork) { 1972922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 1973922dab61SIlya Dryomov return; 1974922dab61SIlya Dryomov } 1975922dab61SIlya Dryomov 1976922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 1977922dab61SIlya Dryomov lwork_queue(lwork); 1978922dab61SIlya Dryomov } 1979922dab61SIlya Dryomov 1980922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 1981922dab61SIlya Dryomov int result) 1982922dab61SIlya Dryomov { 1983922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 1984922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 1985922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 1986922dab61SIlya Dryomov } 1987922dab61SIlya Dryomov } 1988922dab61SIlya Dryomov 1989922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 1990922dab61SIlya Dryomov { 1991922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 1992922dab61SIlya Dryomov 1993922dab61SIlya Dryomov mutex_lock(&lreq->lock); 1994922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 1995922dab61SIlya Dryomov lreq->linger_id, req->r_result); 1996922dab61SIlya Dryomov WARN_ON(!__linger_registered(lreq)); 1997922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 1998922dab61SIlya Dryomov lreq->committed = true; 1999922dab61SIlya Dryomov 2000922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2001922dab61SIlya Dryomov linger_put(lreq); 2002922dab61SIlya Dryomov } 2003922dab61SIlya Dryomov 2004922dab61SIlya Dryomov static int normalize_watch_error(int err) 2005922dab61SIlya Dryomov { 2006922dab61SIlya Dryomov /* 2007922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 2008922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 2009922dab61SIlya Dryomov * the delete appear the same to the user. 2010922dab61SIlya Dryomov */ 2011922dab61SIlya Dryomov if (err == -ENOENT) 2012922dab61SIlya Dryomov err = -ENOTCONN; 2013922dab61SIlya Dryomov 2014922dab61SIlya Dryomov return err; 2015922dab61SIlya Dryomov } 2016922dab61SIlya Dryomov 2017922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 2018922dab61SIlya Dryomov { 2019922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2020922dab61SIlya Dryomov 2021922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2022922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 2023922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 2024922dab61SIlya Dryomov if (req->r_result < 0) { 2025922dab61SIlya Dryomov if (!lreq->last_error) { 2026922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2027922dab61SIlya Dryomov queue_watch_error(lreq); 2028922dab61SIlya Dryomov } 2029922dab61SIlya Dryomov } 2030922dab61SIlya Dryomov 2031922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2032922dab61SIlya Dryomov linger_put(lreq); 2033922dab61SIlya Dryomov } 2034922dab61SIlya Dryomov 2035922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 2036922dab61SIlya Dryomov { 2037922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->reg_req; 2038922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2039922dab61SIlya Dryomov 2040922dab61SIlya Dryomov verify_osdc_wrlocked(req->r_osdc); 2041922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2042922dab61SIlya Dryomov 2043922dab61SIlya Dryomov if (req->r_osd) 2044922dab61SIlya Dryomov cancel_linger_request(req); 2045922dab61SIlya Dryomov 2046922dab61SIlya Dryomov request_reinit(req); 2047922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 2048922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 2049922dab61SIlya Dryomov req->r_flags = lreq->t.flags; 2050922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 2051922dab61SIlya Dryomov 2052922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2053922dab61SIlya Dryomov if (lreq->committed) { 2054922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2055922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id); 2056922dab61SIlya Dryomov op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; 2057922dab61SIlya Dryomov op->watch.gen = ++lreq->register_gen; 2058922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 2059922dab61SIlya Dryomov op->watch.gen); 2060922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 2061922dab61SIlya Dryomov } else { 2062922dab61SIlya Dryomov WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); 2063922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 2064922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 2065922dab61SIlya Dryomov } 2066922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2067922dab61SIlya Dryomov 2068922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2069922dab61SIlya Dryomov req->r_linger = true; 2070922dab61SIlya Dryomov 2071922dab61SIlya Dryomov submit_request(req, true); 2072922dab61SIlya Dryomov } 2073922dab61SIlya Dryomov 2074922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 2075922dab61SIlya Dryomov { 2076922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2077922dab61SIlya Dryomov 2078922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2079922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 2080922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 2081922dab61SIlya Dryomov lreq->last_error); 2082922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 2083922dab61SIlya Dryomov if (req->r_result && !lreq->last_error) { 2084922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2085922dab61SIlya Dryomov queue_watch_error(lreq); 2086922dab61SIlya Dryomov } 2087922dab61SIlya Dryomov } else { 2088922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 2089922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 2090922dab61SIlya Dryomov } 2091922dab61SIlya Dryomov 2092922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2093922dab61SIlya Dryomov linger_put(lreq); 2094922dab61SIlya Dryomov } 2095922dab61SIlya Dryomov 2096922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 2097922dab61SIlya Dryomov { 2098922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2099922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->ping_req; 2100922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2101922dab61SIlya Dryomov 2102922dab61SIlya Dryomov if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD)) { 2103922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 2104922dab61SIlya Dryomov return; 2105922dab61SIlya Dryomov } 2106922dab61SIlya Dryomov 2107922dab61SIlya Dryomov lreq->ping_sent = jiffies; 2108922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 2109922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 2110922dab61SIlya Dryomov lreq->register_gen); 2111922dab61SIlya Dryomov 2112922dab61SIlya Dryomov if (req->r_osd) 2113922dab61SIlya Dryomov cancel_linger_request(req); 2114922dab61SIlya Dryomov 2115922dab61SIlya Dryomov request_reinit(req); 2116922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 2117922dab61SIlya Dryomov 2118922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2119922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id || 2120922dab61SIlya Dryomov op->watch.op != CEPH_OSD_WATCH_OP_PING); 2121922dab61SIlya Dryomov op->watch.gen = lreq->register_gen; 2122922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 2123922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2124922dab61SIlya Dryomov req->r_linger = true; 2125922dab61SIlya Dryomov 2126922dab61SIlya Dryomov ceph_osdc_get_request(req); 2127922dab61SIlya Dryomov account_request(req); 2128922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 2129922dab61SIlya Dryomov link_request(lreq->osd, req); 2130922dab61SIlya Dryomov send_request(req); 2131922dab61SIlya Dryomov } 2132922dab61SIlya Dryomov 2133922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 2134922dab61SIlya Dryomov { 2135922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2136922dab61SIlya Dryomov struct ceph_osd *osd; 2137922dab61SIlya Dryomov 2138922dab61SIlya Dryomov calc_target(osdc, &lreq->t, &lreq->last_force_resend, false); 2139922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 2140922dab61SIlya Dryomov link_linger(osd, lreq); 2141922dab61SIlya Dryomov 2142922dab61SIlya Dryomov send_linger(lreq); 2143922dab61SIlya Dryomov } 2144922dab61SIlya Dryomov 2145922dab61SIlya Dryomov /* 2146922dab61SIlya Dryomov * @lreq has to be both registered and linked. 2147922dab61SIlya Dryomov */ 2148922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 2149922dab61SIlya Dryomov { 2150922dab61SIlya Dryomov if (lreq->ping_req->r_osd) 2151922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 2152922dab61SIlya Dryomov if (lreq->reg_req->r_osd) 2153922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 2154922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 2155922dab61SIlya Dryomov linger_unregister(lreq); 2156922dab61SIlya Dryomov } 2157922dab61SIlya Dryomov 2158922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 2159922dab61SIlya Dryomov { 2160922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2161922dab61SIlya Dryomov 2162922dab61SIlya Dryomov down_write(&osdc->lock); 2163922dab61SIlya Dryomov if (__linger_registered(lreq)) 2164922dab61SIlya Dryomov __linger_cancel(lreq); 2165922dab61SIlya Dryomov up_write(&osdc->lock); 2166922dab61SIlya Dryomov } 2167922dab61SIlya Dryomov 2168922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 2169922dab61SIlya Dryomov { 2170922dab61SIlya Dryomov int ret; 2171922dab61SIlya Dryomov 2172922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2173922dab61SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); 2174922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 2175922dab61SIlya Dryomov } 2176922dab61SIlya Dryomov 2177922dab61SIlya Dryomov /* 2178fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 2179fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 2180fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 2181fbca9635SIlya Dryomov * reset is detected. 21823d14c5d2SYehuda Sadeh */ 21833d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 21843d14c5d2SYehuda Sadeh { 21853d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 21863d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 2187a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 21885aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 21895aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 21905aea3dcdSIlya Dryomov struct rb_node *n, *p; 21913d14c5d2SYehuda Sadeh 21925aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 21935aea3dcdSIlya Dryomov down_write(&osdc->lock); 21943d14c5d2SYehuda Sadeh 21953d14c5d2SYehuda Sadeh /* 21963d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 21973d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 21983d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 21993d14c5d2SYehuda Sadeh */ 22005aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 22015aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 22025aea3dcdSIlya Dryomov bool found = false; 22033d14c5d2SYehuda Sadeh 22045aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 22055aea3dcdSIlya Dryomov struct ceph_osd_request *req = 22065aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 22075aea3dcdSIlya Dryomov 22085aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 22095aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 22105aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 22115aea3dcdSIlya Dryomov found = true; 22125aea3dcdSIlya Dryomov } 22135aea3dcdSIlya Dryomov } 2214922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 2215922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2216922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 2217922dab61SIlya Dryomov 2218922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 2219922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 2220922dab61SIlya Dryomov found = true; 2221922dab61SIlya Dryomov 2222922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2223922dab61SIlya Dryomov if (lreq->committed && !lreq->last_error) 2224922dab61SIlya Dryomov send_linger_ping(lreq); 2225922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2226922dab61SIlya Dryomov } 22275aea3dcdSIlya Dryomov 22285aea3dcdSIlya Dryomov if (found) 22293d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 22303d14c5d2SYehuda Sadeh } 22315aea3dcdSIlya Dryomov 22325aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 22335aea3dcdSIlya Dryomov maybe_request_map(osdc); 22345aea3dcdSIlya Dryomov 22353d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 22365aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 22375aea3dcdSIlya Dryomov struct ceph_osd, 22383d14c5d2SYehuda Sadeh o_keepalive_item); 22393d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 22403d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 22413d14c5d2SYehuda Sadeh } 22423d14c5d2SYehuda Sadeh 22435aea3dcdSIlya Dryomov up_write(&osdc->lock); 2244fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 2245fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 22463d14c5d2SYehuda Sadeh } 22473d14c5d2SYehuda Sadeh 22483d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 22493d14c5d2SYehuda Sadeh { 22503d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 22513d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 22523d14c5d2SYehuda Sadeh osds_timeout_work.work); 2253a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 225442a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 22553d14c5d2SYehuda Sadeh 225642a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 22575aea3dcdSIlya Dryomov down_write(&osdc->lock); 225842a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 225942a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 226042a2c09fSIlya Dryomov break; 226142a2c09fSIlya Dryomov 22625aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 2263922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 22645aea3dcdSIlya Dryomov close_osd(osd); 226542a2c09fSIlya Dryomov } 226642a2c09fSIlya Dryomov 22675aea3dcdSIlya Dryomov up_write(&osdc->lock); 22683d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 22693d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 22703d14c5d2SYehuda Sadeh } 22713d14c5d2SYehuda Sadeh 2272205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 2273205ee118SIlya Dryomov struct ceph_object_locator *oloc) 2274205ee118SIlya Dryomov { 2275205ee118SIlya Dryomov u8 struct_v, struct_cv; 2276205ee118SIlya Dryomov u32 len; 2277205ee118SIlya Dryomov void *struct_end; 2278205ee118SIlya Dryomov int ret = 0; 2279205ee118SIlya Dryomov 2280205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 2281205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 2282205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 2283205ee118SIlya Dryomov if (struct_v < 3) { 2284205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 2285205ee118SIlya Dryomov struct_v, struct_cv); 2286205ee118SIlya Dryomov goto e_inval; 2287205ee118SIlya Dryomov } 2288205ee118SIlya Dryomov if (struct_cv > 6) { 2289205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 2290205ee118SIlya Dryomov struct_v, struct_cv); 2291205ee118SIlya Dryomov goto e_inval; 2292205ee118SIlya Dryomov } 2293205ee118SIlya Dryomov len = ceph_decode_32(p); 2294205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 2295205ee118SIlya Dryomov struct_end = *p + len; 2296205ee118SIlya Dryomov 2297205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 2298205ee118SIlya Dryomov *p += 4; /* skip preferred */ 2299205ee118SIlya Dryomov 2300205ee118SIlya Dryomov len = ceph_decode_32(p); 2301205ee118SIlya Dryomov if (len > 0) { 2302205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 2303205ee118SIlya Dryomov goto e_inval; 2304205ee118SIlya Dryomov } 2305205ee118SIlya Dryomov 2306205ee118SIlya Dryomov if (struct_v >= 5) { 2307205ee118SIlya Dryomov len = ceph_decode_32(p); 2308205ee118SIlya Dryomov if (len > 0) { 2309205ee118SIlya Dryomov pr_warn("ceph_object_locator::nspace is set\n"); 2310205ee118SIlya Dryomov goto e_inval; 2311205ee118SIlya Dryomov } 2312205ee118SIlya Dryomov } 2313205ee118SIlya Dryomov 2314205ee118SIlya Dryomov if (struct_v >= 6) { 2315205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 2316205ee118SIlya Dryomov if (hash != -1) { 2317205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 2318205ee118SIlya Dryomov goto e_inval; 2319205ee118SIlya Dryomov } 2320205ee118SIlya Dryomov } 2321205ee118SIlya Dryomov 2322205ee118SIlya Dryomov /* skip the rest */ 2323205ee118SIlya Dryomov *p = struct_end; 2324205ee118SIlya Dryomov out: 2325205ee118SIlya Dryomov return ret; 2326205ee118SIlya Dryomov 2327205ee118SIlya Dryomov e_inval: 2328205ee118SIlya Dryomov ret = -EINVAL; 2329205ee118SIlya Dryomov goto out; 2330205ee118SIlya Dryomov } 2331205ee118SIlya Dryomov 2332205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 2333205ee118SIlya Dryomov struct ceph_request_redirect *redir) 2334205ee118SIlya Dryomov { 2335205ee118SIlya Dryomov u8 struct_v, struct_cv; 2336205ee118SIlya Dryomov u32 len; 2337205ee118SIlya Dryomov void *struct_end; 2338205ee118SIlya Dryomov int ret; 2339205ee118SIlya Dryomov 2340205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 2341205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 2342205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 2343205ee118SIlya Dryomov if (struct_cv > 1) { 2344205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 2345205ee118SIlya Dryomov struct_v, struct_cv); 2346205ee118SIlya Dryomov goto e_inval; 2347205ee118SIlya Dryomov } 2348205ee118SIlya Dryomov len = ceph_decode_32(p); 2349205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 2350205ee118SIlya Dryomov struct_end = *p + len; 2351205ee118SIlya Dryomov 2352205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 2353205ee118SIlya Dryomov if (ret) 2354205ee118SIlya Dryomov goto out; 2355205ee118SIlya Dryomov 2356205ee118SIlya Dryomov len = ceph_decode_32(p); 2357205ee118SIlya Dryomov if (len > 0) { 2358205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 2359205ee118SIlya Dryomov goto e_inval; 2360205ee118SIlya Dryomov } 2361205ee118SIlya Dryomov 2362205ee118SIlya Dryomov len = ceph_decode_32(p); 2363205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 2364205ee118SIlya Dryomov 2365205ee118SIlya Dryomov /* skip the rest */ 2366205ee118SIlya Dryomov *p = struct_end; 2367205ee118SIlya Dryomov out: 2368205ee118SIlya Dryomov return ret; 2369205ee118SIlya Dryomov 2370205ee118SIlya Dryomov e_inval: 2371205ee118SIlya Dryomov ret = -EINVAL; 2372205ee118SIlya Dryomov goto out; 2373205ee118SIlya Dryomov } 2374205ee118SIlya Dryomov 2375fe5da05eSIlya Dryomov struct MOSDOpReply { 2376fe5da05eSIlya Dryomov struct ceph_pg pgid; 2377fe5da05eSIlya Dryomov u64 flags; 2378fe5da05eSIlya Dryomov int result; 2379fe5da05eSIlya Dryomov u32 epoch; 2380fe5da05eSIlya Dryomov int num_ops; 2381fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 2382fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 2383fe5da05eSIlya Dryomov int retry_attempt; 2384fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 2385fe5da05eSIlya Dryomov u64 user_version; 2386fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 2387fe5da05eSIlya Dryomov }; 238825845472SSage Weil 2389fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 23903d14c5d2SYehuda Sadeh { 2391fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 2392fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 2393fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 2394fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 2395b0b31a8fSIlya Dryomov u8 decode_redir; 2396fe5da05eSIlya Dryomov u32 len; 2397fe5da05eSIlya Dryomov int ret; 2398fe5da05eSIlya Dryomov int i; 23993d14c5d2SYehuda Sadeh 2400fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 2401fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 2402fe5da05eSIlya Dryomov p += len; /* skip oid */ 24031b83bef2SSage Weil 2404fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 2405fe5da05eSIlya Dryomov if (ret) 2406fe5da05eSIlya Dryomov return ret; 24071b83bef2SSage Weil 2408fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 2409fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 2410fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 2411fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 2412fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 2413fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 24141b83bef2SSage Weil 2415fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 2416fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 2417fe5da05eSIlya Dryomov goto e_inval; 24181b83bef2SSage Weil 2419fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 2420fe5da05eSIlya Dryomov e_inval); 2421fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 24221b83bef2SSage Weil struct ceph_osd_op *op = p; 24231b83bef2SSage Weil 2424fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 24251b83bef2SSage Weil p += sizeof(*op); 24261b83bef2SSage Weil } 2427fe5da05eSIlya Dryomov 2428fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 2429fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 2430fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 2431fe5da05eSIlya Dryomov 2432fe5da05eSIlya Dryomov if (version >= 5) { 2433fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 2434fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 2435fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 2436fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 2437fe5da05eSIlya Dryomov } else { 2438fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 2439fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 24401b83bef2SSage Weil } 24411b83bef2SSage Weil 2442fe5da05eSIlya Dryomov if (version >= 6) { 2443fe5da05eSIlya Dryomov if (version >= 7) 2444fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 2445b0b31a8fSIlya Dryomov else 2446b0b31a8fSIlya Dryomov decode_redir = 1; 2447b0b31a8fSIlya Dryomov } else { 2448b0b31a8fSIlya Dryomov decode_redir = 0; 2449b0b31a8fSIlya Dryomov } 2450b0b31a8fSIlya Dryomov 2451b0b31a8fSIlya Dryomov if (decode_redir) { 2452fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 2453fe5da05eSIlya Dryomov if (ret) 2454fe5da05eSIlya Dryomov return ret; 2455205ee118SIlya Dryomov } else { 2456fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 2457205ee118SIlya Dryomov } 2458205ee118SIlya Dryomov 2459fe5da05eSIlya Dryomov return 0; 2460205ee118SIlya Dryomov 2461fe5da05eSIlya Dryomov e_inval: 2462fe5da05eSIlya Dryomov return -EINVAL; 2463fe5da05eSIlya Dryomov } 2464fe5da05eSIlya Dryomov 2465fe5da05eSIlya Dryomov /* 2466fe5da05eSIlya Dryomov * We are done with @req if 2467fe5da05eSIlya Dryomov * - @m is a safe reply, or 2468fe5da05eSIlya Dryomov * - @m is an unsafe reply and we didn't want a safe one 2469fe5da05eSIlya Dryomov */ 2470fe5da05eSIlya Dryomov static bool done_request(const struct ceph_osd_request *req, 2471fe5da05eSIlya Dryomov const struct MOSDOpReply *m) 2472fe5da05eSIlya Dryomov { 2473fe5da05eSIlya Dryomov return (m->result < 0 || 2474fe5da05eSIlya Dryomov (m->flags & CEPH_OSD_FLAG_ONDISK) || 2475fe5da05eSIlya Dryomov !(req->r_flags & CEPH_OSD_FLAG_ONDISK)); 2476fe5da05eSIlya Dryomov } 2477fe5da05eSIlya Dryomov 2478fe5da05eSIlya Dryomov /* 2479fe5da05eSIlya Dryomov * handle osd op reply. either call the callback if it is specified, 2480fe5da05eSIlya Dryomov * or do the completion to wake up the waiting thread. 2481fe5da05eSIlya Dryomov * 2482fe5da05eSIlya Dryomov * ->r_unsafe_callback is set? yes no 2483fe5da05eSIlya Dryomov * 2484fe5da05eSIlya Dryomov * first reply is OK (needed r_cb/r_completion, r_cb/r_completion, 2485fe5da05eSIlya Dryomov * any or needed/got safe) r_safe_completion r_safe_completion 2486fe5da05eSIlya Dryomov * 2487fe5da05eSIlya Dryomov * first reply is unsafe r_unsafe_cb(true) (nothing) 2488fe5da05eSIlya Dryomov * 2489fe5da05eSIlya Dryomov * when we get the safe reply r_unsafe_cb(false), r_cb/r_completion, 2490fe5da05eSIlya Dryomov * r_safe_completion r_safe_completion 2491fe5da05eSIlya Dryomov */ 24925aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 2493fe5da05eSIlya Dryomov { 24945aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 2495fe5da05eSIlya Dryomov struct ceph_osd_request *req; 2496fe5da05eSIlya Dryomov struct MOSDOpReply m; 2497fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 2498fe5da05eSIlya Dryomov u32 data_len = 0; 2499fe5da05eSIlya Dryomov bool already_acked; 2500fe5da05eSIlya Dryomov int ret; 2501fe5da05eSIlya Dryomov int i; 2502fe5da05eSIlya Dryomov 2503fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 2504fe5da05eSIlya Dryomov 25055aea3dcdSIlya Dryomov down_read(&osdc->lock); 25065aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 25075aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 25085aea3dcdSIlya Dryomov goto out_unlock_osdc; 2509fe5da05eSIlya Dryomov } 25105aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 25115aea3dcdSIlya Dryomov 25125aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 25135aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 25145aea3dcdSIlya Dryomov if (!req) { 25155aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 25165aea3dcdSIlya Dryomov goto out_unlock_session; 25175aea3dcdSIlya Dryomov } 2518fe5da05eSIlya Dryomov 2519fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 2520fe5da05eSIlya Dryomov if (ret) { 2521fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 2522fe5da05eSIlya Dryomov req->r_tid, ret); 2523fe5da05eSIlya Dryomov ceph_msg_dump(msg); 2524fe5da05eSIlya Dryomov goto fail_request; 2525fe5da05eSIlya Dryomov } 2526fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 2527fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 2528fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 2529fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 2530fe5da05eSIlya Dryomov 2531fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 2532fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 2533fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 2534fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 2535fe5da05eSIlya Dryomov req->r_attempts - 1); 25365aea3dcdSIlya Dryomov goto out_unlock_session; 2537fe5da05eSIlya Dryomov } 2538fe5da05eSIlya Dryomov } else { 2539fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 2540fe5da05eSIlya Dryomov } 2541fe5da05eSIlya Dryomov 2542fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 2543fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 2544fe5da05eSIlya Dryomov m.redirect.oloc.pool); 25455aea3dcdSIlya Dryomov unlink_request(osd, req); 25465aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 2547205ee118SIlya Dryomov 2548fe5da05eSIlya Dryomov ceph_oloc_copy(&req->r_t.target_oloc, &m.redirect.oloc); 25495aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; 25505aea3dcdSIlya Dryomov req->r_tid = 0; 25515aea3dcdSIlya Dryomov __submit_request(req, false); 25525aea3dcdSIlya Dryomov goto out_unlock_osdc; 2553205ee118SIlya Dryomov } 2554205ee118SIlya Dryomov 2555fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 2556fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 2557fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 2558fe5da05eSIlya Dryomov goto fail_request; 2559fe5da05eSIlya Dryomov } 2560fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 2561fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 2562fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 2563fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 2564fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 2565fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 2566fe5da05eSIlya Dryomov } 2567fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 2568fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 2569fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 2570fe5da05eSIlya Dryomov goto fail_request; 2571fe5da05eSIlya Dryomov } 2572fe5da05eSIlya Dryomov dout("%s req %p tid %llu acked %d result %d data_len %u\n", __func__, 2573fe5da05eSIlya Dryomov req, req->r_tid, req->r_got_reply, m.result, data_len); 25743d14c5d2SYehuda Sadeh 2575fe5da05eSIlya Dryomov already_acked = req->r_got_reply; 2576fe5da05eSIlya Dryomov if (!already_acked) { 2577fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 2578fe5da05eSIlya Dryomov req->r_replay_version = m.replay_version; /* struct */ 2579fe5da05eSIlya Dryomov req->r_got_reply = true; 2580fe5da05eSIlya Dryomov } else if (!(m.flags & CEPH_OSD_FLAG_ONDISK)) { 2581fe5da05eSIlya Dryomov dout("req %p tid %llu dup ack\n", req, req->r_tid); 25825aea3dcdSIlya Dryomov goto out_unlock_session; 25833d14c5d2SYehuda Sadeh } 25843d14c5d2SYehuda Sadeh 2585fe5da05eSIlya Dryomov if (done_request(req, &m)) { 25865aea3dcdSIlya Dryomov __finish_request(req); 2587fe5da05eSIlya Dryomov if (req->r_linger) { 2588fe5da05eSIlya Dryomov WARN_ON(req->r_unsafe_callback); 2589922dab61SIlya Dryomov dout("req %p tid %llu cb (locked)\n", req, req->r_tid); 2590922dab61SIlya Dryomov __complete_request(req); 2591fe5da05eSIlya Dryomov } 2592fe5da05eSIlya Dryomov } 25933d14c5d2SYehuda Sadeh 25945aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 25955aea3dcdSIlya Dryomov up_read(&osdc->lock); 25963d14c5d2SYehuda Sadeh 2597fe5da05eSIlya Dryomov if (done_request(req, &m)) { 2598fe5da05eSIlya Dryomov if (already_acked && req->r_unsafe_callback) { 2599fe5da05eSIlya Dryomov dout("req %p tid %llu safe-cb\n", req, req->r_tid); 260061c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 2601922dab61SIlya Dryomov } else if (!req->r_linger) { 2602fe5da05eSIlya Dryomov dout("req %p tid %llu cb\n", req, req->r_tid); 2603fe5da05eSIlya Dryomov __complete_request(req); 260461c5d6bfSYan, Zheng } 2605fe5da05eSIlya Dryomov } else { 2606fe5da05eSIlya Dryomov if (req->r_unsafe_callback) { 2607fe5da05eSIlya Dryomov dout("req %p tid %llu unsafe-cb\n", req, req->r_tid); 2608fe5da05eSIlya Dryomov req->r_unsafe_callback(req, true); 2609fe5da05eSIlya Dryomov } else { 2610fe5da05eSIlya Dryomov WARN_ON(1); 2611fe5da05eSIlya Dryomov } 2612fe5da05eSIlya Dryomov } 2613fe5da05eSIlya Dryomov if (m.flags & CEPH_OSD_FLAG_ONDISK) 2614fe5da05eSIlya Dryomov complete_all(&req->r_safe_completion); 26153d14c5d2SYehuda Sadeh 26163d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 26173d14c5d2SYehuda Sadeh return; 2618fe5da05eSIlya Dryomov 2619fe5da05eSIlya Dryomov fail_request: 2620fe5da05eSIlya Dryomov req->r_result = -EIO; 26215aea3dcdSIlya Dryomov __finish_request(req); 2622fe5da05eSIlya Dryomov __complete_request(req); 2623fe5da05eSIlya Dryomov complete_all(&req->r_safe_completion); 26245aea3dcdSIlya Dryomov out_unlock_session: 26255aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 26265aea3dcdSIlya Dryomov out_unlock_osdc: 26275aea3dcdSIlya Dryomov up_read(&osdc->lock); 26283d14c5d2SYehuda Sadeh } 26293d14c5d2SYehuda Sadeh 263042c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 263142c1b124SIlya Dryomov { 263242c1b124SIlya Dryomov struct rb_node *n; 263342c1b124SIlya Dryomov 263442c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 263542c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 263642c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 263742c1b124SIlya Dryomov 263842c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 263942c1b124SIlya Dryomov } 264042c1b124SIlya Dryomov } 264142c1b124SIlya Dryomov 26425aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 26433d14c5d2SYehuda Sadeh { 26445aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 26453d14c5d2SYehuda Sadeh 26465aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 26475aea3dcdSIlya Dryomov if (!pi) 26485aea3dcdSIlya Dryomov return false; 26493d14c5d2SYehuda Sadeh 26505aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 26513d14c5d2SYehuda Sadeh } 26523d14c5d2SYehuda Sadeh 2653922dab61SIlya Dryomov static enum calc_target_result 2654922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 2655922dab61SIlya Dryomov { 2656922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2657922dab61SIlya Dryomov enum calc_target_result ct_res; 2658922dab61SIlya Dryomov 2659922dab61SIlya Dryomov ct_res = calc_target(osdc, &lreq->t, &lreq->last_force_resend, true); 2660922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 2661922dab61SIlya Dryomov struct ceph_osd *osd; 2662922dab61SIlya Dryomov 2663922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 2664922dab61SIlya Dryomov if (osd != lreq->osd) { 2665922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 2666922dab61SIlya Dryomov link_linger(osd, lreq); 2667922dab61SIlya Dryomov } 2668922dab61SIlya Dryomov } 2669922dab61SIlya Dryomov 2670922dab61SIlya Dryomov return ct_res; 2671922dab61SIlya Dryomov } 2672922dab61SIlya Dryomov 26733d14c5d2SYehuda Sadeh /* 26745aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 26753d14c5d2SYehuda Sadeh */ 26765aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 26775aea3dcdSIlya Dryomov bool force_resend, 26785aea3dcdSIlya Dryomov bool cleared_full, 26795aea3dcdSIlya Dryomov bool check_pool_cleared_full, 26805aea3dcdSIlya Dryomov struct rb_root *need_resend, 26815aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 26823d14c5d2SYehuda Sadeh { 26835aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 26845aea3dcdSIlya Dryomov struct rb_node *n; 26855aea3dcdSIlya Dryomov bool force_resend_writes; 26863d14c5d2SYehuda Sadeh 2687922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 2688922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2689922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 2690922dab61SIlya Dryomov enum calc_target_result ct_res; 2691922dab61SIlya Dryomov 2692922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 2693922dab61SIlya Dryomov 2694922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 2695922dab61SIlya Dryomov lreq->linger_id); 2696922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 2697922dab61SIlya Dryomov switch (ct_res) { 2698922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 2699922dab61SIlya Dryomov force_resend_writes = cleared_full || 2700922dab61SIlya Dryomov (check_pool_cleared_full && 2701922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 2702922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 2703922dab61SIlya Dryomov break; 2704922dab61SIlya Dryomov 2705922dab61SIlya Dryomov /* fall through */ 2706922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 2707922dab61SIlya Dryomov /* 2708922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 2709922dab61SIlya Dryomov * may have already added it to the list, since 2710922dab61SIlya Dryomov * it's not unlinked here. 2711922dab61SIlya Dryomov */ 2712922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 2713922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 2714922dab61SIlya Dryomov break; 2715922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 2716922dab61SIlya Dryomov break; 2717922dab61SIlya Dryomov } 2718922dab61SIlya Dryomov } 2719922dab61SIlya Dryomov 27205aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 27215aea3dcdSIlya Dryomov struct ceph_osd_request *req = 27225aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 27235aea3dcdSIlya Dryomov enum calc_target_result ct_res; 2724ab60b16dSAlex Elder 27255aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 2726ab60b16dSAlex Elder 27275aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 27285aea3dcdSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, 27295aea3dcdSIlya Dryomov &req->r_last_force_resend, false); 27305aea3dcdSIlya Dryomov switch (ct_res) { 27315aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 27325aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 27335aea3dcdSIlya Dryomov (check_pool_cleared_full && 27345aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 27355aea3dcdSIlya Dryomov if (!force_resend && 27365aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 27375aea3dcdSIlya Dryomov !force_resend_writes)) 27385aea3dcdSIlya Dryomov break; 2739a40c4f10SYehuda Sadeh 27405aea3dcdSIlya Dryomov /* fall through */ 27415aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 27425aea3dcdSIlya Dryomov unlink_request(osd, req); 27435aea3dcdSIlya Dryomov insert_request(need_resend, req); 27445aea3dcdSIlya Dryomov break; 27455aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 27465aea3dcdSIlya Dryomov break; 2747a40c4f10SYehuda Sadeh } 27483d14c5d2SYehuda Sadeh } 27493d14c5d2SYehuda Sadeh } 27506f6c7006SSage Weil 275142c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 27525aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 27535aea3dcdSIlya Dryomov struct rb_root *need_resend, 27545aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 275542c1b124SIlya Dryomov { 275642c1b124SIlya Dryomov struct ceph_osdmap *newmap; 275742c1b124SIlya Dryomov struct rb_node *n; 275842c1b124SIlya Dryomov bool skipped_map = false; 275942c1b124SIlya Dryomov bool was_full; 276042c1b124SIlya Dryomov 276142c1b124SIlya Dryomov was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 276242c1b124SIlya Dryomov set_pool_was_full(osdc); 276342c1b124SIlya Dryomov 276442c1b124SIlya Dryomov if (incremental) 276542c1b124SIlya Dryomov newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); 276642c1b124SIlya Dryomov else 276742c1b124SIlya Dryomov newmap = ceph_osdmap_decode(&p, end); 276842c1b124SIlya Dryomov if (IS_ERR(newmap)) 276942c1b124SIlya Dryomov return PTR_ERR(newmap); 277042c1b124SIlya Dryomov 277142c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 277242c1b124SIlya Dryomov /* 277342c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 277442c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 277542c1b124SIlya Dryomov * should be false. 277642c1b124SIlya Dryomov */ 277742c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 277842c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 277942c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 278042c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 278142c1b124SIlya Dryomov 278242c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 278342c1b124SIlya Dryomov if (old_pi) 278442c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 278542c1b124SIlya Dryomov else 278642c1b124SIlya Dryomov WARN_ON(pi->was_full); 278742c1b124SIlya Dryomov } 278842c1b124SIlya Dryomov 278942c1b124SIlya Dryomov if (osdc->osdmap->epoch && 279042c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 279142c1b124SIlya Dryomov WARN_ON(incremental); 279242c1b124SIlya Dryomov skipped_map = true; 279342c1b124SIlya Dryomov } 279442c1b124SIlya Dryomov 279542c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 279642c1b124SIlya Dryomov osdc->osdmap = newmap; 279742c1b124SIlya Dryomov } 279842c1b124SIlya Dryomov 279942c1b124SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 28005aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 28015aea3dcdSIlya Dryomov need_resend, need_resend_linger); 28025aea3dcdSIlya Dryomov 28035aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 28045aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 28055aea3dcdSIlya Dryomov 28065aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 28075aea3dcdSIlya Dryomov 28085aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 28095aea3dcdSIlya Dryomov need_resend_linger); 28105aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 28115aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 28125aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 28135aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 28145aea3dcdSIlya Dryomov close_osd(osd); 28155aea3dcdSIlya Dryomov } 281642c1b124SIlya Dryomov 281742c1b124SIlya Dryomov return 0; 281842c1b124SIlya Dryomov } 28196f6c7006SSage Weil 28205aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 28215aea3dcdSIlya Dryomov struct rb_root *need_resend, 28225aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 28235aea3dcdSIlya Dryomov { 2824922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 28255aea3dcdSIlya Dryomov struct rb_node *n; 28265aea3dcdSIlya Dryomov 28275aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 28285aea3dcdSIlya Dryomov struct ceph_osd_request *req = 28295aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 28305aea3dcdSIlya Dryomov struct ceph_osd *osd; 28315aea3dcdSIlya Dryomov 28325aea3dcdSIlya Dryomov n = rb_next(n); 28335aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 28345aea3dcdSIlya Dryomov 28355aea3dcdSIlya Dryomov WARN_ON(req->r_osd); 28365aea3dcdSIlya Dryomov calc_target(osdc, &req->r_t, NULL, false); 28375aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 28385aea3dcdSIlya Dryomov link_request(osd, req); 28395aea3dcdSIlya Dryomov if (!req->r_linger) { 28405aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 28415aea3dcdSIlya Dryomov send_request(req); 2842922dab61SIlya Dryomov } else { 2843922dab61SIlya Dryomov cancel_linger_request(req); 28445aea3dcdSIlya Dryomov } 28455aea3dcdSIlya Dryomov } 2846922dab61SIlya Dryomov 2847922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 2848922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 2849922dab61SIlya Dryomov send_linger(lreq); 2850922dab61SIlya Dryomov 2851922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 2852922dab61SIlya Dryomov } 28535aea3dcdSIlya Dryomov } 28545aea3dcdSIlya Dryomov 28553d14c5d2SYehuda Sadeh /* 28563d14c5d2SYehuda Sadeh * Process updated osd map. 28573d14c5d2SYehuda Sadeh * 28583d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 28593d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 28603d14c5d2SYehuda Sadeh * off to different OSDs as needed. 28613d14c5d2SYehuda Sadeh */ 28623d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 28633d14c5d2SYehuda Sadeh { 286442c1b124SIlya Dryomov void *p = msg->front.iov_base; 286542c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 28663d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 28673d14c5d2SYehuda Sadeh u32 epoch; 28683d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 28695aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 28705aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 287142c1b124SIlya Dryomov bool handled_incremental = false; 287242c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 287342c1b124SIlya Dryomov bool pauserd, pausewr; 287442c1b124SIlya Dryomov int err; 28753d14c5d2SYehuda Sadeh 287642c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 28775aea3dcdSIlya Dryomov down_write(&osdc->lock); 28783d14c5d2SYehuda Sadeh 28793d14c5d2SYehuda Sadeh /* verify fsid */ 28803d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 28813d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 28823d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 288342c1b124SIlya Dryomov goto bad; 28843d14c5d2SYehuda Sadeh 288542c1b124SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 288642c1b124SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 288742c1b124SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 288842c1b124SIlya Dryomov have_pool_full(osdc); 28899a1ea2dbSJosh Durgin 28903d14c5d2SYehuda Sadeh /* incremental maps */ 28913d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 28923d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 28933d14c5d2SYehuda Sadeh while (nr_maps > 0) { 28943d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 28953d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 28963d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 28973d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 289842c1b124SIlya Dryomov if (osdc->osdmap->epoch && 289942c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 29003d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 29013d14c5d2SYehuda Sadeh epoch, maplen); 29025aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 29035aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 290442c1b124SIlya Dryomov if (err) 29053d14c5d2SYehuda Sadeh goto bad; 290642c1b124SIlya Dryomov handled_incremental = true; 29073d14c5d2SYehuda Sadeh } else { 29083d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 29093d14c5d2SYehuda Sadeh epoch, maplen); 29103d14c5d2SYehuda Sadeh } 291142c1b124SIlya Dryomov p += maplen; 29123d14c5d2SYehuda Sadeh nr_maps--; 29133d14c5d2SYehuda Sadeh } 291442c1b124SIlya Dryomov if (handled_incremental) 29153d14c5d2SYehuda Sadeh goto done; 29163d14c5d2SYehuda Sadeh 29173d14c5d2SYehuda Sadeh /* full maps */ 29183d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 29193d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 29203d14c5d2SYehuda Sadeh while (nr_maps) { 29213d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 29223d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 29233d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 29243d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 29253d14c5d2SYehuda Sadeh if (nr_maps > 1) { 29263d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 29273d14c5d2SYehuda Sadeh epoch, maplen); 2928e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 29293d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 29303d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 29313d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 29323d14c5d2SYehuda Sadeh } else { 29333d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 29345aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 29355aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 293642c1b124SIlya Dryomov if (err) 29373d14c5d2SYehuda Sadeh goto bad; 29383d14c5d2SYehuda Sadeh } 29393d14c5d2SYehuda Sadeh p += maplen; 29403d14c5d2SYehuda Sadeh nr_maps--; 29413d14c5d2SYehuda Sadeh } 29423d14c5d2SYehuda Sadeh 29433d14c5d2SYehuda Sadeh done: 2944cd634fb6SSage Weil /* 2945cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 2946cd634fb6SSage Weil * we find out when we are no longer full and stop returning 2947cd634fb6SSage Weil * ENOSPC. 2948cd634fb6SSage Weil */ 294942c1b124SIlya Dryomov pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 295042c1b124SIlya Dryomov pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 295142c1b124SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 295242c1b124SIlya Dryomov have_pool_full(osdc); 295342c1b124SIlya Dryomov if (was_pauserd || was_pausewr || pauserd || pausewr) 295442c1b124SIlya Dryomov maybe_request_map(osdc); 2955cd634fb6SSage Weil 29565aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 295742c1b124SIlya Dryomov 295842c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 295942c1b124SIlya Dryomov osdc->osdmap->epoch); 29605aea3dcdSIlya Dryomov up_write(&osdc->lock); 29613d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 29623d14c5d2SYehuda Sadeh return; 29633d14c5d2SYehuda Sadeh 29643d14c5d2SYehuda Sadeh bad: 29653d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 29663d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 29675aea3dcdSIlya Dryomov up_write(&osdc->lock); 29685aea3dcdSIlya Dryomov } 29695aea3dcdSIlya Dryomov 29705aea3dcdSIlya Dryomov /* 29715aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 29725aea3dcdSIlya Dryomov */ 29735aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 29745aea3dcdSIlya Dryomov { 29755aea3dcdSIlya Dryomov struct rb_node *n; 29765aea3dcdSIlya Dryomov 2977922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 29785aea3dcdSIlya Dryomov struct ceph_osd_request *req = 29795aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 29805aea3dcdSIlya Dryomov 2981922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 2982922dab61SIlya Dryomov 29835aea3dcdSIlya Dryomov if (!req->r_linger) { 29845aea3dcdSIlya Dryomov if (!req->r_t.paused) 29855aea3dcdSIlya Dryomov send_request(req); 2986922dab61SIlya Dryomov } else { 2987922dab61SIlya Dryomov cancel_linger_request(req); 29885aea3dcdSIlya Dryomov } 29895aea3dcdSIlya Dryomov } 2990922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 2991922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2992922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 2993922dab61SIlya Dryomov 2994922dab61SIlya Dryomov send_linger(lreq); 2995922dab61SIlya Dryomov } 29965aea3dcdSIlya Dryomov } 29975aea3dcdSIlya Dryomov 29985aea3dcdSIlya Dryomov /* 29995aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 30005aea3dcdSIlya Dryomov */ 30015aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 30025aea3dcdSIlya Dryomov { 30035aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 30045aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 30055aea3dcdSIlya Dryomov 30065aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 30075aea3dcdSIlya Dryomov 30085aea3dcdSIlya Dryomov down_write(&osdc->lock); 30095aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 30105aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 30115aea3dcdSIlya Dryomov goto out_unlock; 30125aea3dcdSIlya Dryomov } 30135aea3dcdSIlya Dryomov 30145aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 30155aea3dcdSIlya Dryomov kick_osd_requests(osd); 30165aea3dcdSIlya Dryomov maybe_request_map(osdc); 30175aea3dcdSIlya Dryomov 30185aea3dcdSIlya Dryomov out_unlock: 30195aea3dcdSIlya Dryomov up_write(&osdc->lock); 30203d14c5d2SYehuda Sadeh } 30213d14c5d2SYehuda Sadeh 30223d14c5d2SYehuda Sadeh /* 3023a40c4f10SYehuda Sadeh * Process osd watch notifications 3024a40c4f10SYehuda Sadeh */ 30253c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 30263c663bbdSAlex Elder struct ceph_msg *msg) 3027a40c4f10SYehuda Sadeh { 3028922dab61SIlya Dryomov void *p = msg->front.iov_base; 3029922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 3030922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 3031922dab61SIlya Dryomov struct linger_work *lwork; 3032922dab61SIlya Dryomov u8 proto_ver, opcode; 3033922dab61SIlya Dryomov u64 cookie, notify_id; 3034922dab61SIlya Dryomov u64 notifier_id = 0; 3035922dab61SIlya Dryomov void *payload = NULL; 3036922dab61SIlya Dryomov u32 payload_len = 0; 3037a40c4f10SYehuda Sadeh 3038a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 3039a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 3040a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 3041922dab61SIlya Dryomov p += 8; /* skip ver */ 3042a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 3043a40c4f10SYehuda Sadeh 3044922dab61SIlya Dryomov if (proto_ver >= 1) { 3045922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 3046922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 3047922dab61SIlya Dryomov payload = p; 3048922dab61SIlya Dryomov p += payload_len; 3049a40c4f10SYehuda Sadeh } 3050a40c4f10SYehuda Sadeh 3051922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 3052922dab61SIlya Dryomov p += 4; /* skip return_code */ 3053922dab61SIlya Dryomov 3054922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 3055922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 3056922dab61SIlya Dryomov 3057922dab61SIlya Dryomov down_read(&osdc->lock); 3058922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 3059922dab61SIlya Dryomov if (!lreq) { 3060922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 3061922dab61SIlya Dryomov cookie); 3062922dab61SIlya Dryomov goto out_unlock_osdc; 3063922dab61SIlya Dryomov } 3064922dab61SIlya Dryomov 3065922dab61SIlya Dryomov mutex_lock(&lreq->lock); 3066922dab61SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p\n", __func__, opcode, cookie, 3067922dab61SIlya Dryomov lreq); 3068922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 3069922dab61SIlya Dryomov if (!lreq->last_error) { 3070922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 3071922dab61SIlya Dryomov queue_watch_error(lreq); 3072922dab61SIlya Dryomov } 3073922dab61SIlya Dryomov } else { 3074922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 3075922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 3076922dab61SIlya Dryomov if (!lwork) { 3077922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 3078922dab61SIlya Dryomov goto out_unlock_lreq; 3079922dab61SIlya Dryomov } 3080922dab61SIlya Dryomov 3081922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 3082922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 3083922dab61SIlya Dryomov lwork->notify.payload = payload; 3084922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 3085922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 3086922dab61SIlya Dryomov lwork_queue(lwork); 3087922dab61SIlya Dryomov } 3088922dab61SIlya Dryomov 3089922dab61SIlya Dryomov out_unlock_lreq: 3090922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3091922dab61SIlya Dryomov out_unlock_osdc: 3092922dab61SIlya Dryomov up_read(&osdc->lock); 3093a40c4f10SYehuda Sadeh return; 3094a40c4f10SYehuda Sadeh 3095a40c4f10SYehuda Sadeh bad: 3096a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 3097a40c4f10SYehuda Sadeh } 3098a40c4f10SYehuda Sadeh 3099a40c4f10SYehuda Sadeh /* 31003d14c5d2SYehuda Sadeh * Register request, send initial attempt. 31013d14c5d2SYehuda Sadeh */ 31023d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 31033d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 31043d14c5d2SYehuda Sadeh bool nofail) 31053d14c5d2SYehuda Sadeh { 31065aea3dcdSIlya Dryomov down_read(&osdc->lock); 31075aea3dcdSIlya Dryomov submit_request(req, false); 31085aea3dcdSIlya Dryomov up_read(&osdc->lock); 31093d14c5d2SYehuda Sadeh 31105aea3dcdSIlya Dryomov return 0; 31113d14c5d2SYehuda Sadeh } 31123d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 31133d14c5d2SYehuda Sadeh 31143d14c5d2SYehuda Sadeh /* 3115c9f9b93dSIlya Dryomov * Unregister a registered request. The request is not completed (i.e. 3116c9f9b93dSIlya Dryomov * no callbacks or wakeups) - higher layers are supposed to know what 3117c9f9b93dSIlya Dryomov * they are canceling. 3118c9f9b93dSIlya Dryomov */ 3119c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 3120c9f9b93dSIlya Dryomov { 3121c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 3122c9f9b93dSIlya Dryomov 31235aea3dcdSIlya Dryomov down_write(&osdc->lock); 31245aea3dcdSIlya Dryomov if (req->r_osd) 31255aea3dcdSIlya Dryomov cancel_request(req); 31265aea3dcdSIlya Dryomov up_write(&osdc->lock); 3127c9f9b93dSIlya Dryomov } 3128c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 3129c9f9b93dSIlya Dryomov 3130c9f9b93dSIlya Dryomov /* 313142b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 313242b06965SIlya Dryomov */ 313342b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 313442b06965SIlya Dryomov unsigned long timeout) 313542b06965SIlya Dryomov { 313642b06965SIlya Dryomov long left; 313742b06965SIlya Dryomov 313842b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 313942b06965SIlya Dryomov left = wait_for_completion_interruptible_timeout(&req->r_completion, 314042b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 314142b06965SIlya Dryomov if (left <= 0) { 314242b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 314342b06965SIlya Dryomov ceph_osdc_cancel_request(req); 314442b06965SIlya Dryomov 314542b06965SIlya Dryomov /* kludge - need to to wake ceph_osdc_sync() */ 314642b06965SIlya Dryomov complete_all(&req->r_safe_completion); 314742b06965SIlya Dryomov } else { 314842b06965SIlya Dryomov left = req->r_result; /* completed */ 314942b06965SIlya Dryomov } 315042b06965SIlya Dryomov 315142b06965SIlya Dryomov return left; 315242b06965SIlya Dryomov } 315342b06965SIlya Dryomov 315442b06965SIlya Dryomov /* 31553d14c5d2SYehuda Sadeh * wait for a request to complete 31563d14c5d2SYehuda Sadeh */ 31573d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 31583d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 31593d14c5d2SYehuda Sadeh { 316042b06965SIlya Dryomov return wait_request_timeout(req, 0); 31613d14c5d2SYehuda Sadeh } 31623d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 31633d14c5d2SYehuda Sadeh 31643d14c5d2SYehuda Sadeh /* 31653d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 31663d14c5d2SYehuda Sadeh */ 31673d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 31683d14c5d2SYehuda Sadeh { 31695aea3dcdSIlya Dryomov struct rb_node *n, *p; 31705aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 31713d14c5d2SYehuda Sadeh 31725aea3dcdSIlya Dryomov again: 31735aea3dcdSIlya Dryomov down_read(&osdc->lock); 31745aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 31755aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 31765aea3dcdSIlya Dryomov 31775aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 31785aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 31795aea3dcdSIlya Dryomov struct ceph_osd_request *req = 31805aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 31815aea3dcdSIlya Dryomov 31823d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 31833d14c5d2SYehuda Sadeh break; 31843d14c5d2SYehuda Sadeh 31855aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 31863d14c5d2SYehuda Sadeh continue; 31873d14c5d2SYehuda Sadeh 31883d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 31895aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 31905aea3dcdSIlya Dryomov up_read(&osdc->lock); 31915aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 31925aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 31933d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 31943d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 31955aea3dcdSIlya Dryomov goto again; 31963d14c5d2SYehuda Sadeh } 31975aea3dcdSIlya Dryomov 31985aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 31995aea3dcdSIlya Dryomov } 32005aea3dcdSIlya Dryomov 32015aea3dcdSIlya Dryomov up_read(&osdc->lock); 32025aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 32033d14c5d2SYehuda Sadeh } 32043d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 32053d14c5d2SYehuda Sadeh 3206922dab61SIlya Dryomov static struct ceph_osd_request * 3207922dab61SIlya Dryomov alloc_linger_request(struct ceph_osd_linger_request *lreq) 3208922dab61SIlya Dryomov { 3209922dab61SIlya Dryomov struct ceph_osd_request *req; 3210922dab61SIlya Dryomov 3211922dab61SIlya Dryomov req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); 3212922dab61SIlya Dryomov if (!req) 3213922dab61SIlya Dryomov return NULL; 3214922dab61SIlya Dryomov 3215922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 3216922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 3217922dab61SIlya Dryomov 3218922dab61SIlya Dryomov if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { 3219922dab61SIlya Dryomov ceph_osdc_put_request(req); 3220922dab61SIlya Dryomov return NULL; 3221922dab61SIlya Dryomov } 3222922dab61SIlya Dryomov 3223922dab61SIlya Dryomov return req; 3224922dab61SIlya Dryomov } 3225922dab61SIlya Dryomov 3226922dab61SIlya Dryomov /* 3227922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 3228922dab61SIlya Dryomov */ 3229922dab61SIlya Dryomov struct ceph_osd_linger_request * 3230922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 3231922dab61SIlya Dryomov struct ceph_object_id *oid, 3232922dab61SIlya Dryomov struct ceph_object_locator *oloc, 3233922dab61SIlya Dryomov rados_watchcb2_t wcb, 3234922dab61SIlya Dryomov rados_watcherrcb_t errcb, 3235922dab61SIlya Dryomov void *data) 3236922dab61SIlya Dryomov { 3237922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 3238922dab61SIlya Dryomov int ret; 3239922dab61SIlya Dryomov 3240922dab61SIlya Dryomov lreq = linger_alloc(osdc); 3241922dab61SIlya Dryomov if (!lreq) 3242922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 3243922dab61SIlya Dryomov 3244922dab61SIlya Dryomov lreq->wcb = wcb; 3245922dab61SIlya Dryomov lreq->errcb = errcb; 3246922dab61SIlya Dryomov lreq->data = data; 3247922dab61SIlya Dryomov 3248922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 3249922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 3250922dab61SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK; 3251922dab61SIlya Dryomov lreq->mtime = CURRENT_TIME; 3252922dab61SIlya Dryomov 3253922dab61SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 3254922dab61SIlya Dryomov if (!lreq->reg_req) { 3255922dab61SIlya Dryomov ret = -ENOMEM; 3256922dab61SIlya Dryomov goto err_put_lreq; 3257922dab61SIlya Dryomov } 3258922dab61SIlya Dryomov 3259922dab61SIlya Dryomov lreq->ping_req = alloc_linger_request(lreq); 3260922dab61SIlya Dryomov if (!lreq->ping_req) { 3261922dab61SIlya Dryomov ret = -ENOMEM; 3262922dab61SIlya Dryomov goto err_put_lreq; 3263922dab61SIlya Dryomov } 3264922dab61SIlya Dryomov 3265922dab61SIlya Dryomov down_write(&osdc->lock); 3266922dab61SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 3267922dab61SIlya Dryomov osd_req_op_watch_init(lreq->reg_req, 0, lreq->linger_id, 3268922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_WATCH); 3269922dab61SIlya Dryomov osd_req_op_watch_init(lreq->ping_req, 0, lreq->linger_id, 3270922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_PING); 3271922dab61SIlya Dryomov linger_submit(lreq); 3272922dab61SIlya Dryomov up_write(&osdc->lock); 3273922dab61SIlya Dryomov 3274922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 3275922dab61SIlya Dryomov if (ret) { 3276922dab61SIlya Dryomov linger_cancel(lreq); 3277922dab61SIlya Dryomov goto err_put_lreq; 3278922dab61SIlya Dryomov } 3279922dab61SIlya Dryomov 3280922dab61SIlya Dryomov return lreq; 3281922dab61SIlya Dryomov 3282922dab61SIlya Dryomov err_put_lreq: 3283922dab61SIlya Dryomov linger_put(lreq); 3284922dab61SIlya Dryomov return ERR_PTR(ret); 3285922dab61SIlya Dryomov } 3286922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 3287922dab61SIlya Dryomov 3288922dab61SIlya Dryomov /* 3289922dab61SIlya Dryomov * Releases a ref. 3290922dab61SIlya Dryomov * 3291922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 3292922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 3293922dab61SIlya Dryomov * with mount_timeout"). 3294922dab61SIlya Dryomov */ 3295922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 3296922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 3297922dab61SIlya Dryomov { 3298922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 3299922dab61SIlya Dryomov struct ceph_osd_request *req; 3300922dab61SIlya Dryomov int ret; 3301922dab61SIlya Dryomov 3302922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 3303922dab61SIlya Dryomov if (!req) 3304922dab61SIlya Dryomov return -ENOMEM; 3305922dab61SIlya Dryomov 3306922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 3307922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 3308922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK; 3309922dab61SIlya Dryomov req->r_mtime = CURRENT_TIME; 3310922dab61SIlya Dryomov osd_req_op_watch_init(req, 0, lreq->linger_id, 3311922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_UNWATCH); 3312922dab61SIlya Dryomov 3313922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 3314922dab61SIlya Dryomov if (ret) 3315922dab61SIlya Dryomov goto out_put_req; 3316922dab61SIlya Dryomov 3317922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 3318922dab61SIlya Dryomov linger_cancel(lreq); 3319922dab61SIlya Dryomov linger_put(lreq); 3320922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 3321922dab61SIlya Dryomov 3322922dab61SIlya Dryomov out_put_req: 3323922dab61SIlya Dryomov ceph_osdc_put_request(req); 3324922dab61SIlya Dryomov return ret; 3325922dab61SIlya Dryomov } 3326922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 3327922dab61SIlya Dryomov 3328922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 3329922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 3330922dab61SIlya Dryomov size_t payload_len) 3331922dab61SIlya Dryomov { 3332922dab61SIlya Dryomov struct ceph_osd_req_op *op; 3333922dab61SIlya Dryomov struct ceph_pagelist *pl; 3334922dab61SIlya Dryomov int ret; 3335922dab61SIlya Dryomov 3336922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 3337922dab61SIlya Dryomov 3338922dab61SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 3339922dab61SIlya Dryomov if (!pl) 3340922dab61SIlya Dryomov return -ENOMEM; 3341922dab61SIlya Dryomov 3342922dab61SIlya Dryomov ceph_pagelist_init(pl); 3343922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 3344922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 3345922dab61SIlya Dryomov if (payload) { 3346922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 3347922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 3348922dab61SIlya Dryomov } else { 3349922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 3350922dab61SIlya Dryomov } 3351922dab61SIlya Dryomov if (ret) { 3352922dab61SIlya Dryomov ceph_pagelist_release(pl); 3353922dab61SIlya Dryomov return -ENOMEM; 3354922dab61SIlya Dryomov } 3355922dab61SIlya Dryomov 3356922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 3357922dab61SIlya Dryomov op->indata_len = pl->length; 3358922dab61SIlya Dryomov return 0; 3359922dab61SIlya Dryomov } 3360922dab61SIlya Dryomov 3361922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 3362922dab61SIlya Dryomov struct ceph_object_id *oid, 3363922dab61SIlya Dryomov struct ceph_object_locator *oloc, 3364922dab61SIlya Dryomov u64 notify_id, 3365922dab61SIlya Dryomov u64 cookie, 3366922dab61SIlya Dryomov void *payload, 3367922dab61SIlya Dryomov size_t payload_len) 3368922dab61SIlya Dryomov { 3369922dab61SIlya Dryomov struct ceph_osd_request *req; 3370922dab61SIlya Dryomov int ret; 3371922dab61SIlya Dryomov 3372922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 3373922dab61SIlya Dryomov if (!req) 3374922dab61SIlya Dryomov return -ENOMEM; 3375922dab61SIlya Dryomov 3376922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 3377922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 3378922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 3379922dab61SIlya Dryomov 3380922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 3381922dab61SIlya Dryomov if (ret) 3382922dab61SIlya Dryomov goto out_put_req; 3383922dab61SIlya Dryomov 3384922dab61SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 3385922dab61SIlya Dryomov payload_len); 3386922dab61SIlya Dryomov if (ret) 3387922dab61SIlya Dryomov goto out_put_req; 3388922dab61SIlya Dryomov 3389922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 3390922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 3391922dab61SIlya Dryomov 3392922dab61SIlya Dryomov out_put_req: 3393922dab61SIlya Dryomov ceph_osdc_put_request(req); 3394922dab61SIlya Dryomov return ret; 3395922dab61SIlya Dryomov } 3396922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 3397922dab61SIlya Dryomov 33983d14c5d2SYehuda Sadeh /* 3399dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 3400dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 3401dd935f44SJosh Durgin */ 3402f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 3403dd935f44SJosh Durgin { 3404dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 3405dd935f44SJosh Durgin } 3406dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 3407dd935f44SJosh Durgin 3408dd935f44SJosh Durgin 3409dd935f44SJosh Durgin /* 34103d14c5d2SYehuda Sadeh * init, shutdown 34113d14c5d2SYehuda Sadeh */ 34123d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 34133d14c5d2SYehuda Sadeh { 34143d14c5d2SYehuda Sadeh int err; 34153d14c5d2SYehuda Sadeh 34163d14c5d2SYehuda Sadeh dout("init\n"); 34173d14c5d2SYehuda Sadeh osdc->client = client; 34185aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 34193d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 34203d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 34219dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 34225aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 34235aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 34245aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 3425922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 34263d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 34273d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 34283d14c5d2SYehuda Sadeh 34293d14c5d2SYehuda Sadeh err = -ENOMEM; 3430e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 3431e5253a7bSIlya Dryomov if (!osdc->osdmap) 3432e5253a7bSIlya Dryomov goto out; 3433e5253a7bSIlya Dryomov 34349e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 34359e767adbSIlya Dryomov ceph_osd_request_cache); 34363d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 3437e5253a7bSIlya Dryomov goto out_map; 34383d14c5d2SYehuda Sadeh 3439d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 3440711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 34413d14c5d2SYehuda Sadeh if (err < 0) 34423d14c5d2SYehuda Sadeh goto out_mempool; 3443d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 3444711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 34453d14c5d2SYehuda Sadeh if (err < 0) 34463d14c5d2SYehuda Sadeh goto out_msgpool; 3447a40c4f10SYehuda Sadeh 3448dbcae088SDan Carpenter err = -ENOMEM; 3449a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 3450dbcae088SDan Carpenter if (!osdc->notify_wq) 3451c172ec5cSIlya Dryomov goto out_msgpool_reply; 3452c172ec5cSIlya Dryomov 3453fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 3454fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 3455b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 3456b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 3457b37ee1b9SIlya Dryomov 34583d14c5d2SYehuda Sadeh return 0; 34593d14c5d2SYehuda Sadeh 3460c172ec5cSIlya Dryomov out_msgpool_reply: 3461c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 34623d14c5d2SYehuda Sadeh out_msgpool: 34633d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 34643d14c5d2SYehuda Sadeh out_mempool: 34653d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 3466e5253a7bSIlya Dryomov out_map: 3467e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 34683d14c5d2SYehuda Sadeh out: 34693d14c5d2SYehuda Sadeh return err; 34703d14c5d2SYehuda Sadeh } 34713d14c5d2SYehuda Sadeh 34723d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 34733d14c5d2SYehuda Sadeh { 3474a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 3475a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 34763d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 34773d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 347842a2c09fSIlya Dryomov 34795aea3dcdSIlya Dryomov down_write(&osdc->lock); 348042a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 348142a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 348242a2c09fSIlya Dryomov struct ceph_osd, o_node); 34835aea3dcdSIlya Dryomov close_osd(osd); 348442a2c09fSIlya Dryomov } 34855aea3dcdSIlya Dryomov up_write(&osdc->lock); 34865aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->homeless_osd.o_ref) != 1); 34875aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 34885aea3dcdSIlya Dryomov 34895aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 3490922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 34915aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 34925aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 349342a2c09fSIlya Dryomov 34943d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 34953d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 34963d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 34973d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 34983d14c5d2SYehuda Sadeh } 34993d14c5d2SYehuda Sadeh 35003d14c5d2SYehuda Sadeh /* 35013d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 35023d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 35033d14c5d2SYehuda Sadeh */ 35043d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 35053d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 35063d14c5d2SYehuda Sadeh u64 off, u64 *plen, 35073d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 3508b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 35093d14c5d2SYehuda Sadeh { 35103d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 35113d14c5d2SYehuda Sadeh int rc = 0; 35123d14c5d2SYehuda Sadeh 35133d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 35143d14c5d2SYehuda Sadeh vino.snap, off, *plen); 3515715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 35163d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 3517acead002SAlex Elder NULL, truncate_seq, truncate_size, 3518153e5167SAlex Elder false); 35196816282dSSage Weil if (IS_ERR(req)) 35206816282dSSage Weil return PTR_ERR(req); 35213d14c5d2SYehuda Sadeh 35223d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 3523406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 3524a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 35253d14c5d2SYehuda Sadeh 3526e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 352743bfe5deSAlex Elder off, *plen, *plen, page_align); 35283d14c5d2SYehuda Sadeh 35293d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 35303d14c5d2SYehuda Sadeh if (!rc) 35313d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 35323d14c5d2SYehuda Sadeh 35333d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 35343d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 35353d14c5d2SYehuda Sadeh return rc; 35363d14c5d2SYehuda Sadeh } 35373d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 35383d14c5d2SYehuda Sadeh 35393d14c5d2SYehuda Sadeh /* 35403d14c5d2SYehuda Sadeh * do a synchronous write on N pages 35413d14c5d2SYehuda Sadeh */ 35423d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 35433d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 35443d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 35453d14c5d2SYehuda Sadeh u64 off, u64 len, 35463d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 35473d14c5d2SYehuda Sadeh struct timespec *mtime, 354824808826SAlex Elder struct page **pages, int num_pages) 35493d14c5d2SYehuda Sadeh { 35503d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 35513d14c5d2SYehuda Sadeh int rc = 0; 3552b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 35533d14c5d2SYehuda Sadeh 3554715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 35553d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 355624808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 3557acead002SAlex Elder snapc, truncate_seq, truncate_size, 3558153e5167SAlex Elder true); 35596816282dSSage Weil if (IS_ERR(req)) 35606816282dSSage Weil return PTR_ERR(req); 35613d14c5d2SYehuda Sadeh 35623d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 3563406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 356443bfe5deSAlex Elder false, false); 356543bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 35663d14c5d2SYehuda Sadeh 3567bb873b53SIlya Dryomov req->r_mtime = *mtime; 356887f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 35693d14c5d2SYehuda Sadeh if (!rc) 35703d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 35713d14c5d2SYehuda Sadeh 35723d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 35733d14c5d2SYehuda Sadeh if (rc == 0) 35743d14c5d2SYehuda Sadeh rc = len; 35753d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 35763d14c5d2SYehuda Sadeh return rc; 35773d14c5d2SYehuda Sadeh } 35783d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 35793d14c5d2SYehuda Sadeh 35805522ae0bSAlex Elder int ceph_osdc_setup(void) 35815522ae0bSAlex Elder { 35823f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 35833f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 35843f1af42aSIlya Dryomov 35855522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 35863f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 35873f1af42aSIlya Dryomov 0, 0, NULL); 35885522ae0bSAlex Elder 35895522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 35905522ae0bSAlex Elder } 35915522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 35925522ae0bSAlex Elder 35935522ae0bSAlex Elder void ceph_osdc_cleanup(void) 35945522ae0bSAlex Elder { 35955522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 35965522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 35975522ae0bSAlex Elder ceph_osd_request_cache = NULL; 35985522ae0bSAlex Elder } 35995522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 36005522ae0bSAlex Elder 36013d14c5d2SYehuda Sadeh /* 36023d14c5d2SYehuda Sadeh * handle incoming message 36033d14c5d2SYehuda Sadeh */ 36043d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 36053d14c5d2SYehuda Sadeh { 36063d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 36075aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 36083d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 36093d14c5d2SYehuda Sadeh 36103d14c5d2SYehuda Sadeh switch (type) { 36113d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 36123d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 36133d14c5d2SYehuda Sadeh break; 36143d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 36155aea3dcdSIlya Dryomov handle_reply(osd, msg); 36163d14c5d2SYehuda Sadeh break; 3617a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 3618a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 3619a40c4f10SYehuda Sadeh break; 36203d14c5d2SYehuda Sadeh 36213d14c5d2SYehuda Sadeh default: 36223d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 36233d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 36243d14c5d2SYehuda Sadeh } 36255aea3dcdSIlya Dryomov 36263d14c5d2SYehuda Sadeh ceph_msg_put(msg); 36273d14c5d2SYehuda Sadeh } 36283d14c5d2SYehuda Sadeh 36293d14c5d2SYehuda Sadeh /* 3630d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 3631d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 3632d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 36333d14c5d2SYehuda Sadeh */ 36343d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 36353d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 36363d14c5d2SYehuda Sadeh int *skip) 36373d14c5d2SYehuda Sadeh { 36383d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 36393d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 36405aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 36413d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 36423f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 36433d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 36445aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 36453d14c5d2SYehuda Sadeh 36465aea3dcdSIlya Dryomov down_read(&osdc->lock); 36475aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 36485aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 36495aea3dcdSIlya Dryomov *skip = 1; 36505aea3dcdSIlya Dryomov goto out_unlock_osdc; 36515aea3dcdSIlya Dryomov } 36525aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 36535aea3dcdSIlya Dryomov 36545aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 36555aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 36563d14c5d2SYehuda Sadeh if (!req) { 3657cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 3658cd8140c6SIlya Dryomov osd->o_osd, tid); 3659d15f9d69SIlya Dryomov *skip = 1; 36605aea3dcdSIlya Dryomov goto out_unlock_session; 36613d14c5d2SYehuda Sadeh } 36623d14c5d2SYehuda Sadeh 36638921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 36643d14c5d2SYehuda Sadeh 3665f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 3666d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 3667d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 3668d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 36693f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 36703f0a4ac5SIlya Dryomov false); 36713d14c5d2SYehuda Sadeh if (!m) 36725aea3dcdSIlya Dryomov goto out_unlock_session; 36733d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 36743d14c5d2SYehuda Sadeh req->r_reply = m; 36753d14c5d2SYehuda Sadeh } 36763d14c5d2SYehuda Sadeh 3677d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 3678d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 3679d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 3680d15f9d69SIlya Dryomov req->r_reply->data_length); 36813d14c5d2SYehuda Sadeh m = NULL; 3682d15f9d69SIlya Dryomov *skip = 1; 36835aea3dcdSIlya Dryomov goto out_unlock_session; 36843d14c5d2SYehuda Sadeh } 3685d15f9d69SIlya Dryomov 3686d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 36873d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 36883d14c5d2SYehuda Sadeh 36895aea3dcdSIlya Dryomov out_unlock_session: 36905aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 36915aea3dcdSIlya Dryomov out_unlock_osdc: 36925aea3dcdSIlya Dryomov up_read(&osdc->lock); 36933d14c5d2SYehuda Sadeh return m; 36943d14c5d2SYehuda Sadeh } 36953d14c5d2SYehuda Sadeh 36963d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 36973d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 36983d14c5d2SYehuda Sadeh int *skip) 36993d14c5d2SYehuda Sadeh { 37003d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 37013d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 37023d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 37033d14c5d2SYehuda Sadeh 37041c20f2d2SAlex Elder *skip = 0; 37053d14c5d2SYehuda Sadeh switch (type) { 37063d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 3707a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 3708b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 37093d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 37103d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 37113d14c5d2SYehuda Sadeh default: 37125aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 37135aea3dcdSIlya Dryomov osd->o_osd, type); 37143d14c5d2SYehuda Sadeh *skip = 1; 37153d14c5d2SYehuda Sadeh return NULL; 37163d14c5d2SYehuda Sadeh } 37173d14c5d2SYehuda Sadeh } 37183d14c5d2SYehuda Sadeh 37193d14c5d2SYehuda Sadeh /* 37203d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 37213d14c5d2SYehuda Sadeh */ 37223d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 37233d14c5d2SYehuda Sadeh { 37243d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 37253d14c5d2SYehuda Sadeh if (get_osd(osd)) 37263d14c5d2SYehuda Sadeh return con; 37273d14c5d2SYehuda Sadeh return NULL; 37283d14c5d2SYehuda Sadeh } 37293d14c5d2SYehuda Sadeh 37303d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 37313d14c5d2SYehuda Sadeh { 37323d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 37333d14c5d2SYehuda Sadeh put_osd(osd); 37343d14c5d2SYehuda Sadeh } 37353d14c5d2SYehuda Sadeh 37363d14c5d2SYehuda Sadeh /* 37373d14c5d2SYehuda Sadeh * authentication 37383d14c5d2SYehuda Sadeh */ 3739a3530df3SAlex Elder /* 3740a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 3741a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 3742a3530df3SAlex Elder */ 3743a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 37448f43fb53SAlex Elder int *proto, int force_new) 37453d14c5d2SYehuda Sadeh { 37463d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 37473d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 37483d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 374974f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 37503d14c5d2SYehuda Sadeh 375174f1869fSAlex Elder if (force_new && auth->authorizer) { 37526c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 375374f1869fSAlex Elder auth->authorizer = NULL; 37543d14c5d2SYehuda Sadeh } 375527859f97SSage Weil if (!auth->authorizer) { 375627859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 3757a3530df3SAlex Elder auth); 37583d14c5d2SYehuda Sadeh if (ret) 3759a3530df3SAlex Elder return ERR_PTR(ret); 376027859f97SSage Weil } else { 376127859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 37620bed9b5cSSage Weil auth); 37630bed9b5cSSage Weil if (ret) 37640bed9b5cSSage Weil return ERR_PTR(ret); 37653d14c5d2SYehuda Sadeh } 37663d14c5d2SYehuda Sadeh *proto = ac->protocol; 376774f1869fSAlex Elder 3768a3530df3SAlex Elder return auth; 37693d14c5d2SYehuda Sadeh } 37703d14c5d2SYehuda Sadeh 37713d14c5d2SYehuda Sadeh 37723d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 37733d14c5d2SYehuda Sadeh { 37743d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 37753d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 37763d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 37773d14c5d2SYehuda Sadeh 377827859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 37793d14c5d2SYehuda Sadeh } 37803d14c5d2SYehuda Sadeh 37813d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 37823d14c5d2SYehuda Sadeh { 37833d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 37843d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 37853d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 37863d14c5d2SYehuda Sadeh 378727859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 37883d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 37893d14c5d2SYehuda Sadeh } 37903d14c5d2SYehuda Sadeh 379179dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 379233d07337SYan, Zheng { 379379dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 379433d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 379579dbd1baSIlya Dryomov 379633d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 379733d07337SYan, Zheng } 379833d07337SYan, Zheng 379979dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 380033d07337SYan, Zheng { 380179dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 380233d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 380379dbd1baSIlya Dryomov 380433d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 380533d07337SYan, Zheng } 380633d07337SYan, Zheng 38073d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 38083d14c5d2SYehuda Sadeh .get = get_osd_con, 38093d14c5d2SYehuda Sadeh .put = put_osd_con, 38103d14c5d2SYehuda Sadeh .dispatch = dispatch, 38113d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 38123d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 38133d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 38143d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 381579dbd1baSIlya Dryomov .sign_message = osd_sign_message, 381679dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 38175aea3dcdSIlya Dryomov .fault = osd_fault, 38183d14c5d2SYehuda Sadeh }; 3819